* [PATCH 0/1] Remove of old NCR53C9x/esp family of drivers
@ 2008-01-03 15:17 Boaz Harrosh
2008-01-03 15:40 ` [PATCH 1/1] " Boaz Harrosh
0 siblings, 1 reply; 18+ messages in thread
From: Boaz Harrosh @ 2008-01-03 15:17 UTC (permalink / raw)
To: James Bottomley, Christoph Hellwig, Maciej W. Rozycki,
David S. Miller, Linux/m68k
James
Could you at least put the following patch in scsi-pending
so it can attract some acknowledgment, and retract futile
attempts from people at coding these drivers.
(And also git is better than me in maintaining it synced)
Christoph Hellwig!
I need your Recommended-by: on this. I had my regular
convert-to-accessors, and because of your recommendation
I'm pushing this removal. And I keep doing it again and again
because a removal patch is a conflict-to-any by definition.
David S. Miller & Maciej W. Rozycki
Please add a comment in favor of this move. And a few words for
the few users left for this hardware.
Boaz
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-03 15:17 [PATCH 0/1] Remove of old NCR53C9x/esp family of drivers Boaz Harrosh
@ 2008-01-03 15:40 ` Boaz Harrosh
2008-01-03 18:16 ` James Bottomley
0 siblings, 1 reply; 18+ messages in thread
From: Boaz Harrosh @ 2008-01-03 15:40 UTC (permalink / raw)
To: James Bottomley, Christoph Hellwig, Maciej W. Rozycki,
David S. Miller, Linux/m68k
As recommended by Christoph Hellwig. There is no use
of Fixing these drivers, since there is a much simpler
and modern esp infrastructure with David Miller's esp_scsi
- Remove all driver files dependent on NCR53C9x.c
deleted: drivers/scsi/NCR53C9x.c
deleted: drivers/scsi/NCR53C9x.h
deleted: drivers/scsi/blz1230.c
deleted: drivers/scsi/blz2060.c
deleted: drivers/scsi/cyberstorm.c
deleted: drivers/scsi/cyberstormII.c
deleted: drivers/scsi/dec_esp.c
deleted: drivers/scsi/fastlane.c
deleted: drivers/scsi/mac_esp.c
deleted: drivers/scsi/mca_53c9x.c
deleted: drivers/scsi/oktagon_esp.c
deleted: drivers/scsi/oktagon_io.S
deleted: drivers/scsi/sun3x_esp.c
- Remove above list from drivers/scsi/Kconfig && drivers/scsi/Makefile
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
---
drivers/scsi/Kconfig | 85 -
drivers/scsi/Makefile | 11 -
drivers/scsi/NCR53C9x.c | 3654 -------------------------------------------
drivers/scsi/NCR53C9x.h | 668 --------
drivers/scsi/blz1230.c | 353 -----
drivers/scsi/blz2060.c | 306 ----
drivers/scsi/cyberstorm.c | 377 -----
drivers/scsi/cyberstormII.c | 314 ----
drivers/scsi/dec_esp.c | 687 --------
drivers/scsi/fastlane.c | 421 -----
drivers/scsi/mac_esp.c | 751 ---------
drivers/scsi/mca_53c9x.c | 520 ------
drivers/scsi/oktagon_esp.c | 606 -------
drivers/scsi/oktagon_io.S | 194 ---
drivers/scsi/sun3x_esp.c | 392 -----
15 files changed, 0 insertions(+), 9339 deletions(-)
delete mode 100644 drivers/scsi/NCR53C9x.c
delete mode 100644 drivers/scsi/NCR53C9x.h
delete mode 100644 drivers/scsi/blz1230.c
delete mode 100644 drivers/scsi/blz2060.c
delete mode 100644 drivers/scsi/cyberstorm.c
delete mode 100644 drivers/scsi/cyberstormII.c
delete mode 100644 drivers/scsi/dec_esp.c
delete mode 100644 drivers/scsi/fastlane.c
delete mode 100644 drivers/scsi/mac_esp.c
delete mode 100644 drivers/scsi/mca_53c9x.c
delete mode 100644 drivers/scsi/oktagon_esp.c
delete mode 100644 drivers/scsi/oktagon_io.S
delete mode 100644 drivers/scsi/sun3x_esp.c
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 0b243e0..1ee71d9 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -350,13 +350,6 @@ config SGIWD93_SCSI
If you have a Western Digital WD93 SCSI controller on
an SGI MIPS system, say Y. Otherwise, say N.
-config SCSI_DECNCR
- tristate "DEC NCR53C94 Scsi Driver"
- depends on MACH_DECSTATION && SCSI && TC
- help
- Say Y here to support the NCR53C94 SCSI controller chips on IOASIC
- based TURBOchannel DECstations and TURBOchannel PMAZ-A cards.
-
config SCSI_DECSII
tristate "DEC SII Scsi Driver"
depends on MACH_DECSTATION && SCSI && 32BIT
@@ -1263,17 +1256,6 @@ config SCSI_NCR53C8XX_NO_DISCONNECT
not allow targets to disconnect is not reasonable if there is more
than 1 device on a SCSI bus. The normal answer therefore is N.
-config SCSI_MCA_53C9X
- tristate "NCR MCA 53C9x SCSI support"
- depends on MCA_LEGACY && SCSI && BROKEN_ON_SMP
- help
- Some MicroChannel machines, notably the NCR 35xx line, use a SCSI
- controller based on the NCR 53C94. This driver will allow use of
- the controller on the 3550, and very possibly others.
-
- To compile this driver as a module, choose M here: the
- module will be called mca_53c9x.
-
config SCSI_PAS16
tristate "PAS16 SCSI support"
depends on ISA && SCSI
@@ -1600,45 +1582,6 @@ config GVP11_SCSI
To compile this driver as a module, choose M here: the
module will be called gvp11.
-config CYBERSTORM_SCSI
- tristate "CyberStorm SCSI support"
- depends on ZORRO && SCSI
- help
- If you have an Amiga with an original (MkI) Phase5 Cyberstorm
- accelerator board and the optional Cyberstorm SCSI controller,
- answer Y. Otherwise, say N.
-
-config CYBERSTORMII_SCSI
- tristate "CyberStorm Mk II SCSI support"
- depends on ZORRO && SCSI
- help
- If you have an Amiga with a Phase5 Cyberstorm MkII accelerator board
- and the optional Cyberstorm SCSI controller, say Y. Otherwise,
- answer N.
-
-config BLZ2060_SCSI
- tristate "Blizzard 2060 SCSI support"
- depends on ZORRO && SCSI
- help
- If you have an Amiga with a Phase5 Blizzard 2060 accelerator board
- and want to use the onboard SCSI controller, say Y. Otherwise,
- answer N.
-
-config BLZ1230_SCSI
- tristate "Blizzard 1230IV/1260 SCSI support"
- depends on ZORRO && SCSI
- help
- If you have an Amiga 1200 with a Phase5 Blizzard 1230IV or Blizzard
- 1260 accelerator, and the optional SCSI module, say Y. Otherwise,
- say N.
-
-config FASTLANE_SCSI
- tristate "Fastlane SCSI support"
- depends on ZORRO && SCSI
- help
- If you have the Phase5 Fastlane Z3 SCSI controller, or plan to use
- one in the near future, say Y to this question. Otherwise, say N.
-
config SCSI_A4000T
tristate "A4000T NCR53c710 SCSI support (EXPERIMENTAL)"
depends on AMIGA && SCSI && EXPERIMENTAL
@@ -1666,15 +1609,6 @@ config SCSI_ZORRO7XX
accelerator card for the Amiga 1200,
- the SCSI controller on the GVP Turbo 040/060 accelerator.
-config OKTAGON_SCSI
- tristate "BSC Oktagon SCSI support (EXPERIMENTAL)"
- depends on ZORRO && SCSI && EXPERIMENTAL
- help
- If you have the BSC Oktagon SCSI disk controller for the Amiga, say
- Y to this question. If you're in doubt about whether you have one,
- see the picture at
- <http://amiga.resource.cx/exp/search.pl?product=oktagon>.
-
config ATARI_SCSI
tristate "Atari native SCSI support"
depends on ATARI && SCSI
@@ -1727,18 +1661,6 @@ config MAC_SCSI
SCSI-HOWTO, available from
<http://www.tldp.org/docs.html#howto>.
-config SCSI_MAC_ESP
- tristate "Macintosh NCR53c9[46] SCSI"
- depends on MAC && SCSI
- help
- This is the NCR 53c9x SCSI controller found on most of the 68040
- based Macintoshes. If you have one of these say Y and read the
- SCSI-HOWTO, available from
- <http://www.tldp.org/docs.html#howto>.
-
- To compile this driver as a module, choose M here: the
- module will be called mac_esp.
-
config MVME147_SCSI
bool "WD33C93 SCSI driver for MVME147"
depends on MVME147 && SCSI=y
@@ -1776,13 +1698,6 @@ config SUN3_SCSI
General Linux information on the Sun 3 series (now discontinued)
is at <http://www.angelfire.com/ca2/tech68k/sun3.html>.
-config SUN3X_ESP
- bool "Sun3x ESP SCSI"
- depends on SUN3X && SCSI=y
- help
- The ESP was an on-board SCSI controller used on Sun 3/80
- machines. Say Y here to compile in support for it.
-
config SCSI_SUNESP
tristate "Sparc ESP Scsi Driver"
depends on SBUS && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 93e1428..6fe6202 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -44,15 +44,8 @@ obj-$(CONFIG_A2091_SCSI) += a2091.o wd33c93.o
obj-$(CONFIG_GVP11_SCSI) += gvp11.o wd33c93.o
obj-$(CONFIG_MVME147_SCSI) += mvme147.o wd33c93.o
obj-$(CONFIG_SGIWD93_SCSI) += sgiwd93.o wd33c93.o
-obj-$(CONFIG_CYBERSTORM_SCSI) += NCR53C9x.o cyberstorm.o
-obj-$(CONFIG_CYBERSTORMII_SCSI) += NCR53C9x.o cyberstormII.o
-obj-$(CONFIG_BLZ2060_SCSI) += NCR53C9x.o blz2060.o
-obj-$(CONFIG_BLZ1230_SCSI) += NCR53C9x.o blz1230.o
-obj-$(CONFIG_FASTLANE_SCSI) += NCR53C9x.o fastlane.o
-obj-$(CONFIG_OKTAGON_SCSI) += NCR53C9x.o oktagon_esp_mod.o
obj-$(CONFIG_ATARI_SCSI) += atari_scsi.o
obj-$(CONFIG_MAC_SCSI) += mac_scsi.o
-obj-$(CONFIG_SCSI_MAC_ESP) += mac_esp.o NCR53C9x.o
obj-$(CONFIG_SUN3_SCSI) += sun3_scsi.o sun3_scsi_vme.o
obj-$(CONFIG_MVME16x_SCSI) += 53c700.o mvme16x_scsi.o
obj-$(CONFIG_BVME6000_SCSI) += 53c700.o bvme6000_scsi.o
@@ -95,7 +88,6 @@ obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/
obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o
obj-$(CONFIG_SCSI_EATA_PIO) += eata_pio.o
obj-$(CONFIG_SCSI_7000FASST) += wd7000.o
-obj-$(CONFIG_SCSI_MCA_53C9X) += NCR53C9x.o mca_53c9x.o
obj-$(CONFIG_SCSI_IBMMCA) += ibmmca.o
obj-$(CONFIG_SCSI_EATA) += eata.o
obj-$(CONFIG_SCSI_DC395x) += dc395x.o
@@ -112,13 +104,11 @@ obj-$(CONFIG_SCSI_QLOGICPTI) += qlogicpti.o
obj-$(CONFIG_BLK_DEV_IDESCSI) += ide-scsi.o
obj-$(CONFIG_SCSI_MESH) += mesh.o
obj-$(CONFIG_SCSI_MAC53C94) += mac53c94.o
-obj-$(CONFIG_SCSI_DECNCR) += NCR53C9x.o dec_esp.o
obj-$(CONFIG_BLK_DEV_3W_XXXX_RAID) += 3w-xxxx.o
obj-$(CONFIG_SCSI_3W_9XXX) += 3w-9xxx.o
obj-$(CONFIG_SCSI_PPA) += ppa.o
obj-$(CONFIG_SCSI_IMM) += imm.o
obj-$(CONFIG_JAZZ_ESP) += esp_scsi.o jazz_esp.o
-obj-$(CONFIG_SUN3X_ESP) += NCR53C9x.o sun3x_esp.o
obj-$(CONFIG_SCSI_LASI700) += 53c700.o lasi700.o
obj-$(CONFIG_SCSI_SNI_53C710) += 53c700.o sni_53c710.o
obj-$(CONFIG_SCSI_NSP32) += nsp32.o
@@ -162,7 +152,6 @@ ncr53c8xx-flags-$(CONFIG_SCSI_ZALON) \
CFLAGS_ncr53c8xx.o := $(ncr53c8xx-flags-y) $(ncr53c8xx-flags-m)
zalon7xx-objs := zalon.o ncr53c8xx.o
NCR_Q720_mod-objs := NCR_Q720.o ncr53c8xx.o
-oktagon_esp_mod-objs := oktagon_esp.o oktagon_io.o
# Files generated that shall be removed upon make clean
clean-files := 53c700_d.h 53c700_u.h
diff --git a/drivers/scsi/NCR53C9x.c b/drivers/scsi/NCR53C9x.c
deleted file mode 100644
index 5b0efc9..0000000
--- a/drivers/scsi/NCR53C9x.c
+++ /dev/null
@@ -1,3654 +0,0 @@
-/* NCR53C9x.c: Generic SCSI driver code for NCR53C9x chips.
- *
- * Originally esp.c : EnhancedScsiProcessor Sun SCSI driver code.
- *
- * Copyright (C) 1995, 1998 David S. Miller (davem@caip.rutgers.edu)
- *
- * Most DMA dependencies put in driver specific files by
- * Jesper Skov (jskov@cygnus.co.uk)
- *
- * Set up to use esp_read/esp_write (preprocessor macros in NCR53c9x.h) by
- * Tymm Twillman (tymm@coe.missouri.edu)
- */
-
-/* TODO:
- *
- * 1) Maybe disable parity checking in config register one for SCSI1
- * targets. (Gilmore says parity error on the SBus can lock up
- * old sun4c's)
- * 2) Add support for DMA2 pipelining.
- * 3) Add tagged queueing.
- * 4) Maybe change use of "esp" to something more "NCR"'ish.
- */
-
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/system.h>
-#include <asm/ptrace.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-/* Command phase enumeration. */
-enum {
- not_issued = 0x00, /* Still in the issue_SC queue. */
-
- /* Various forms of selecting a target. */
-#define in_slct_mask 0x10
- in_slct_norm = 0x10, /* ESP is arbitrating, normal selection */
- in_slct_stop = 0x11, /* ESP will select, then stop with IRQ */
- in_slct_msg = 0x12, /* select, then send a message */
- in_slct_tag = 0x13, /* select and send tagged queue msg */
- in_slct_sneg = 0x14, /* select and acquire sync capabilities */
-
- /* Any post selection activity. */
-#define in_phases_mask 0x20
- in_datain = 0x20, /* Data is transferring from the bus */
- in_dataout = 0x21, /* Data is transferring to the bus */
- in_data_done = 0x22, /* Last DMA data operation done (maybe) */
- in_msgin = 0x23, /* Eating message from target */
- in_msgincont = 0x24, /* Eating more msg bytes from target */
- in_msgindone = 0x25, /* Decide what to do with what we got */
- in_msgout = 0x26, /* Sending message to target */
- in_msgoutdone = 0x27, /* Done sending msg out */
- in_cmdbegin = 0x28, /* Sending cmd after abnormal selection */
- in_cmdend = 0x29, /* Done sending slow cmd */
- in_status = 0x2a, /* Was in status phase, finishing cmd */
- in_freeing = 0x2b, /* freeing the bus for cmd cmplt or disc */
- in_the_dark = 0x2c, /* Don't know what bus phase we are in */
-
- /* Special states, ie. not normal bus transitions... */
-#define in_spec_mask 0x80
- in_abortone = 0x80, /* Aborting one command currently */
- in_abortall = 0x81, /* Blowing away all commands we have */
- in_resetdev = 0x82, /* SCSI target reset in progress */
- in_resetbus = 0x83, /* SCSI bus reset in progress */
- in_tgterror = 0x84, /* Target did something stupid */
-};
-
-enum {
- /* Zero has special meaning, see skipahead[12]. */
-/*0*/ do_never,
-
-/*1*/ do_phase_determine,
-/*2*/ do_reset_bus,
-/*3*/ do_reset_complete,
-/*4*/ do_work_bus,
-/*5*/ do_intr_end
-};
-
-/* The master ring of all esp hosts we are managing in this driver. */
-static struct NCR_ESP *espchain;
-int nesps = 0, esps_in_use = 0, esps_running = 0;
-EXPORT_SYMBOL(nesps);
-EXPORT_SYMBOL(esps_running);
-
-irqreturn_t esp_intr(int irq, void *dev_id);
-
-/* Debugging routines */
-static struct esp_cmdstrings {
- unchar cmdchar;
- char *text;
-} esp_cmd_strings[] = {
- /* Miscellaneous */
- { ESP_CMD_NULL, "ESP_NOP", },
- { ESP_CMD_FLUSH, "FIFO_FLUSH", },
- { ESP_CMD_RC, "RSTESP", },
- { ESP_CMD_RS, "RSTSCSI", },
- /* Disconnected State Group */
- { ESP_CMD_RSEL, "RESLCTSEQ", },
- { ESP_CMD_SEL, "SLCTNATN", },
- { ESP_CMD_SELA, "SLCTATN", },
- { ESP_CMD_SELAS, "SLCTATNSTOP", },
- { ESP_CMD_ESEL, "ENSLCTRESEL", },
- { ESP_CMD_DSEL, "DISSELRESEL", },
- { ESP_CMD_SA3, "SLCTATN3", },
- { ESP_CMD_RSEL3, "RESLCTSEQ", },
- /* Target State Group */
- { ESP_CMD_SMSG, "SNDMSG", },
- { ESP_CMD_SSTAT, "SNDSTATUS", },
- { ESP_CMD_SDATA, "SNDDATA", },
- { ESP_CMD_DSEQ, "DISCSEQ", },
- { ESP_CMD_TSEQ, "TERMSEQ", },
- { ESP_CMD_TCCSEQ, "TRGTCMDCOMPSEQ", },
- { ESP_CMD_DCNCT, "DISC", },
- { ESP_CMD_RMSG, "RCVMSG", },
- { ESP_CMD_RCMD, "RCVCMD", },
- { ESP_CMD_RDATA, "RCVDATA", },
- { ESP_CMD_RCSEQ, "RCVCMDSEQ", },
- /* Initiator State Group */
- { ESP_CMD_TI, "TRANSINFO", },
- { ESP_CMD_ICCSEQ, "INICMDSEQCOMP", },
- { ESP_CMD_MOK, "MSGACCEPTED", },
- { ESP_CMD_TPAD, "TPAD", },
- { ESP_CMD_SATN, "SATN", },
- { ESP_CMD_RATN, "RATN", },
-};
-#define NUM_ESP_COMMANDS ((sizeof(esp_cmd_strings)) / (sizeof(struct esp_cmdstrings)))
-
-/* Print textual representation of an ESP command */
-static inline void esp_print_cmd(unchar espcmd)
-{
- unchar dma_bit = espcmd & ESP_CMD_DMA;
- int i;
-
- espcmd &= ~dma_bit;
- for(i=0; i<NUM_ESP_COMMANDS; i++)
- if(esp_cmd_strings[i].cmdchar == espcmd)
- break;
- if(i==NUM_ESP_COMMANDS)
- printk("ESP_Unknown");
- else
- printk("%s%s", esp_cmd_strings[i].text,
- ((dma_bit) ? "+DMA" : ""));
-}
-
-/* Print the status register's value */
-static inline void esp_print_statreg(unchar statreg)
-{
- unchar phase;
-
- printk("STATUS<");
- phase = statreg & ESP_STAT_PMASK;
- printk("%s,", (phase == ESP_DOP ? "DATA-OUT" :
- (phase == ESP_DIP ? "DATA-IN" :
- (phase == ESP_CMDP ? "COMMAND" :
- (phase == ESP_STATP ? "STATUS" :
- (phase == ESP_MOP ? "MSG-OUT" :
- (phase == ESP_MIP ? "MSG_IN" :
- "unknown")))))));
- if(statreg & ESP_STAT_TDONE)
- printk("TRANS_DONE,");
- if(statreg & ESP_STAT_TCNT)
- printk("TCOUNT_ZERO,");
- if(statreg & ESP_STAT_PERR)
- printk("P_ERROR,");
- if(statreg & ESP_STAT_SPAM)
- printk("SPAM,");
- if(statreg & ESP_STAT_INTR)
- printk("IRQ,");
- printk(">");
-}
-
-/* Print the interrupt register's value */
-static inline void esp_print_ireg(unchar intreg)
-{
- printk("INTREG< ");
- if(intreg & ESP_INTR_S)
- printk("SLCT_NATN ");
- if(intreg & ESP_INTR_SATN)
- printk("SLCT_ATN ");
- if(intreg & ESP_INTR_RSEL)
- printk("RSLCT ");
- if(intreg & ESP_INTR_FDONE)
- printk("FDONE ");
- if(intreg & ESP_INTR_BSERV)
- printk("BSERV ");
- if(intreg & ESP_INTR_DC)
- printk("DISCNCT ");
- if(intreg & ESP_INTR_IC)
- printk("ILL_CMD ");
- if(intreg & ESP_INTR_SR)
- printk("SCSI_BUS_RESET ");
- printk(">");
-}
-
-/* Print the sequence step registers contents */
-static inline void esp_print_seqreg(unchar stepreg)
-{
- stepreg &= ESP_STEP_VBITS;
- printk("STEP<%s>",
- (stepreg == ESP_STEP_ASEL ? "SLCT_ARB_CMPLT" :
- (stepreg == ESP_STEP_SID ? "1BYTE_MSG_SENT" :
- (stepreg == ESP_STEP_NCMD ? "NOT_IN_CMD_PHASE" :
- (stepreg == ESP_STEP_PPC ? "CMD_BYTES_LOST" :
- (stepreg == ESP_STEP_FINI4 ? "CMD_SENT_OK" :
- "UNKNOWN"))))));
-}
-
-static char *phase_string(int phase)
-{
- switch(phase) {
- case not_issued:
- return "UNISSUED";
- case in_slct_norm:
- return "SLCTNORM";
- case in_slct_stop:
- return "SLCTSTOP";
- case in_slct_msg:
- return "SLCTMSG";
- case in_slct_tag:
- return "SLCTTAG";
- case in_slct_sneg:
- return "SLCTSNEG";
- case in_datain:
- return "DATAIN";
- case in_dataout:
- return "DATAOUT";
- case in_data_done:
- return "DATADONE";
- case in_msgin:
- return "MSGIN";
- case in_msgincont:
- return "MSGINCONT";
- case in_msgindone:
- return "MSGINDONE";
- case in_msgout:
- return "MSGOUT";
- case in_msgoutdone:
- return "MSGOUTDONE";
- case in_cmdbegin:
- return "CMDBEGIN";
- case in_cmdend:
- return "CMDEND";
- case in_status:
- return "STATUS";
- case in_freeing:
- return "FREEING";
- case in_the_dark:
- return "CLUELESS";
- case in_abortone:
- return "ABORTONE";
- case in_abortall:
- return "ABORTALL";
- case in_resetdev:
- return "RESETDEV";
- case in_resetbus:
- return "RESETBUS";
- case in_tgterror:
- return "TGTERROR";
- default:
- return "UNKNOWN";
- };
-}
-
-#ifdef DEBUG_STATE_MACHINE
-static inline void esp_advance_phase(Scsi_Cmnd *s, int newphase)
-{
- ESPLOG(("<%s>", phase_string(newphase)));
- s->SCp.sent_command = s->SCp.phase;
- s->SCp.phase = newphase;
-}
-#else
-#define esp_advance_phase(__s, __newphase) \
- (__s)->SCp.sent_command = (__s)->SCp.phase; \
- (__s)->SCp.phase = (__newphase);
-#endif
-
-#ifdef DEBUG_ESP_CMDS
-static inline void esp_cmd(struct NCR_ESP *esp, struct ESP_regs *eregs,
- unchar cmd)
-{
- esp->espcmdlog[esp->espcmdent] = cmd;
- esp->espcmdent = (esp->espcmdent + 1) & 31;
- esp_write(eregs->esp_cmnd, cmd);
-}
-#else
-#define esp_cmd(__esp, __eregs, __cmd) esp_write((__eregs)->esp_cmnd, (__cmd))
-#endif
-
-/* How we use the various Linux SCSI data structures for operation.
- *
- * struct scsi_cmnd:
- *
- * We keep track of the syncronous capabilities of a target
- * in the device member, using sync_min_period and
- * sync_max_offset. These are the values we directly write
- * into the ESP registers while running a command. If offset
- * is zero the ESP will use asynchronous transfers.
- * If the borken flag is set we assume we shouldn't even bother
- * trying to negotiate for synchronous transfer as this target
- * is really stupid. If we notice the target is dropping the
- * bus, and we have been allowing it to disconnect, we clear
- * the disconnect flag.
- */
-
-/* Manipulation of the ESP command queues. Thanks to the aha152x driver
- * and its author, Juergen E. Fischer, for the methods used here.
- * Note that these are per-ESP queues, not global queues like
- * the aha152x driver uses.
- */
-static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
-{
- Scsi_Cmnd *end;
-
- new_SC->host_scribble = (unsigned char *) NULL;
- if(!*SC)
- *SC = new_SC;
- else {
- for(end=*SC;end->host_scribble;end=(Scsi_Cmnd *)end->host_scribble)
- ;
- end->host_scribble = (unsigned char *) new_SC;
- }
-}
-
-static inline void prepend_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
-{
- new_SC->host_scribble = (unsigned char *) *SC;
- *SC = new_SC;
-}
-
-static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd **SC)
-{
- Scsi_Cmnd *ptr;
-
- ptr = *SC;
- if(ptr)
- *SC = (Scsi_Cmnd *) (*SC)->host_scribble;
- return ptr;
-}
-
-static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, int target, int lun)
-{
- Scsi_Cmnd *ptr, *prev;
-
- for(ptr = *SC, prev = NULL;
- ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
- prev = ptr, ptr = (Scsi_Cmnd *) ptr->host_scribble)
- ;
- if(ptr) {
- if(prev)
- prev->host_scribble=ptr->host_scribble;
- else
- *SC=(Scsi_Cmnd *)ptr->host_scribble;
- }
- return ptr;
-}
-
-/* Resetting various pieces of the ESP scsi driver chipset */
-
-/* Reset the ESP chip, _not_ the SCSI bus. */
-static void esp_reset_esp(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- int family_code, version, i;
- volatile int trash;
-
- /* Now reset the ESP chip */
- esp_cmd(esp, eregs, ESP_CMD_RC);
- esp_cmd(esp, eregs, ESP_CMD_NULL | ESP_CMD_DMA);
- if(esp->erev == fast)
- esp_write(eregs->esp_cfg2, ESP_CONFIG2_FENAB);
- esp_cmd(esp, eregs, ESP_CMD_NULL | ESP_CMD_DMA);
-
- /* This is the only point at which it is reliable to read
- * the ID-code for a fast ESP chip variant.
- */
- esp->max_period = ((35 * esp->ccycle) / 1000);
- if(esp->erev == fast) {
- char *erev2string[] = {
- "Emulex FAS236",
- "Emulex FPESP100A",
- "fast",
- "QLogic FAS366",
- "Emulex FAS216",
- "Symbios Logic 53CF9x-2",
- "unknown!"
- };
-
- version = esp_read(eregs->esp_uid);
- family_code = (version & 0xf8) >> 3;
- if(family_code == 0x02) {
- if ((version & 7) == 2)
- esp->erev = fas216;
- else
- esp->erev = fas236;
- } else if(family_code == 0x0a)
- esp->erev = fas366; /* Version is usually '5'. */
- else if(family_code == 0x00) {
- if ((version & 7) == 2)
- esp->erev = fas100a; /* NCR53C9X */
- else
- esp->erev = espunknown;
- } else if(family_code == 0x14) {
- if ((version & 7) == 2)
- esp->erev = fsc;
- else
- esp->erev = espunknown;
- } else if(family_code == 0x00) {
- if ((version & 7) == 2)
- esp->erev = fas100a; /* NCR53C9X */
- else
- esp->erev = espunknown;
- } else
- esp->erev = espunknown;
- ESPLOG(("esp%d: FAST chip is %s (family=%d, version=%d)\n",
- esp->esp_id, erev2string[esp->erev - fas236],
- family_code, (version & 7)));
-
- esp->min_period = ((4 * esp->ccycle) / 1000);
- } else {
- esp->min_period = ((5 * esp->ccycle) / 1000);
- }
-
- /* Reload the configuration registers */
- esp_write(eregs->esp_cfact, esp->cfact);
- esp->prev_stp = 0;
- esp_write(eregs->esp_stp, 0);
- esp->prev_soff = 0;
- esp_write(eregs->esp_soff, 0);
- esp_write(eregs->esp_timeo, esp->neg_defp);
- esp->max_period = (esp->max_period + 3)>>2;
- esp->min_period = (esp->min_period + 3)>>2;
-
- esp_write(eregs->esp_cfg1, esp->config1);
- switch(esp->erev) {
- case esp100:
- /* nothing to do */
- break;
- case esp100a:
- esp_write(eregs->esp_cfg2, esp->config2);
- break;
- case esp236:
- /* Slow 236 */
- esp_write(eregs->esp_cfg2, esp->config2);
- esp->prev_cfg3 = esp->config3[0];
- esp_write(eregs->esp_cfg3, esp->prev_cfg3);
- break;
- case fas366:
- panic("esp: FAS366 support not present, please notify "
- "jongk@cs.utwente.nl");
- break;
- case fas216:
- case fas236:
- case fsc:
- /* Fast ESP variants */
- esp_write(eregs->esp_cfg2, esp->config2);
- for(i=0; i<8; i++)
- esp->config3[i] |= ESP_CONFIG3_FCLK;
- esp->prev_cfg3 = esp->config3[0];
- esp_write(eregs->esp_cfg3, esp->prev_cfg3);
- if(esp->diff)
- esp->radelay = 0;
- else
- esp->radelay = 16;
- /* Different timeout constant for these chips */
- esp->neg_defp =
- FSC_NEG_DEFP(esp->cfreq,
- (esp->cfact == ESP_CCF_F0 ?
- ESP_CCF_F7 + 1 : esp->cfact));
- esp_write(eregs->esp_timeo, esp->neg_defp);
- /* Enable Active Negotiation if possible */
- if((esp->erev == fsc) && !esp->diff)
- esp_write(eregs->esp_cfg4, ESP_CONFIG4_EAN);
- break;
- case fas100a:
- /* Fast 100a */
- esp_write(eregs->esp_cfg2, esp->config2);
- for(i=0; i<8; i++)
- esp->config3[i] |= ESP_CONFIG3_FCLOCK;
- esp->prev_cfg3 = esp->config3[0];
- esp_write(eregs->esp_cfg3, esp->prev_cfg3);
- esp->radelay = 32;
- break;
- default:
- panic("esp: what could it be... I wonder...");
- break;
- };
-
- /* Eat any bitrot in the chip */
- trash = esp_read(eregs->esp_intrpt);
- udelay(100);
-}
-
-/* This places the ESP into a known state at boot time. */
-void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- volatile unchar trash;
-
- /* Reset the DMA */
- if(esp->dma_reset)
- esp->dma_reset(esp);
-
- /* Reset the ESP */
- esp_reset_esp(esp, eregs);
-
- /* Reset the SCSI bus, but tell ESP not to generate an irq */
- esp_write(eregs->esp_cfg1, (esp_read(eregs->esp_cfg1) | ESP_CONFIG1_SRRDISAB));
- esp_cmd(esp, eregs, ESP_CMD_RS);
- udelay(400);
- esp_write(eregs->esp_cfg1, esp->config1);
-
- /* Eat any bitrot in the chip and we are done... */
- trash = esp_read(eregs->esp_intrpt);
-}
-EXPORT_SYMBOL(esp_bootup_reset);
-
-/* Allocate structure and insert basic data such as SCSI chip frequency
- * data and a pointer to the device
- */
-struct NCR_ESP* esp_allocate(struct scsi_host_template *tpnt, void *esp_dev,
- int hotplug)
-{
- struct NCR_ESP *esp, *elink;
- struct Scsi_Host *esp_host;
-
- if (hotplug)
- esp_host = scsi_host_alloc(tpnt, sizeof(struct NCR_ESP));
- else
- esp_host = scsi_register(tpnt, sizeof(struct NCR_ESP));
- if(!esp_host)
- panic("Cannot register ESP SCSI host");
- esp = (struct NCR_ESP *) esp_host->hostdata;
- if(!esp)
- panic("No esp in hostdata");
- esp->ehost = esp_host;
- esp->edev = esp_dev;
- esp->esp_id = nesps++;
-
- /* Set bitshift value (only used on Amiga with multiple ESPs) */
- esp->shift = 2;
-
- /* Put into the chain of esp chips detected */
- if(espchain) {
- elink = espchain;
- while(elink->next) elink = elink->next;
- elink->next = esp;
- } else {
- espchain = esp;
- }
- esp->next = NULL;
-
- return esp;
-}
-
-void esp_deallocate(struct NCR_ESP *esp)
-{
- struct NCR_ESP *elink;
-
- if(espchain == esp) {
- espchain = NULL;
- } else {
- for(elink = espchain; elink && (elink->next != esp); elink = elink->next);
- if(elink)
- elink->next = esp->next;
- }
- nesps--;
-}
-
-/* Complete initialization of ESP structure and device
- * Caller must have initialized appropriate parts of the ESP structure
- * between the call to esp_allocate and this function.
- */
-void esp_initialize(struct NCR_ESP *esp)
-{
- struct ESP_regs *eregs = esp->eregs;
- unsigned int fmhz;
- unchar ccf;
- int i;
-
- /* Check out the clock properties of the chip. */
-
- /* This is getting messy but it has to be done
- * correctly or else you get weird behavior all
- * over the place. We are trying to basically
- * figure out three pieces of information.
- *
- * a) Clock Conversion Factor
- *
- * This is a representation of the input
- * crystal clock frequency going into the
- * ESP on this machine. Any operation whose
- * timing is longer than 400ns depends on this
- * value being correct. For example, you'll
- * get blips for arbitration/selection during
- * high load or with multiple targets if this
- * is not set correctly.
- *
- * b) Selection Time-Out
- *
- * The ESP isn't very bright and will arbitrate
- * for the bus and try to select a target
- * forever if you let it. This value tells
- * the ESP when it has taken too long to
- * negotiate and that it should interrupt
- * the CPU so we can see what happened.
- * The value is computed as follows (from
- * NCR/Symbios chip docs).
- *
- * (Time Out Period) * (Input Clock)
- * STO = ----------------------------------
- * (8192) * (Clock Conversion Factor)
- *
- * You usually want the time out period to be
- * around 250ms, I think we'll set it a little
- * bit higher to account for fully loaded SCSI
- * bus's and slow devices that don't respond so
- * quickly to selection attempts. (yeah, I know
- * this is out of spec. but there is a lot of
- * buggy pieces of firmware out there so bite me)
- *
- * c) Imperical constants for synchronous offset
- * and transfer period register values
- *
- * This entails the smallest and largest sync
- * period we could ever handle on this ESP.
- */
-
- fmhz = esp->cfreq;
-
- if(fmhz <= (5000000))
- ccf = 0;
- else
- ccf = (((5000000 - 1) + (fmhz))/(5000000));
- if(!ccf || ccf > 8) {
- /* If we can't find anything reasonable,
- * just assume 20MHZ. This is the clock
- * frequency of the older sun4c's where I've
- * been unable to find the clock-frequency
- * PROM property. All other machines provide
- * useful values it seems.
- */
- ccf = ESP_CCF_F4;
- fmhz = (20000000);
- }
- if(ccf==(ESP_CCF_F7+1))
- esp->cfact = ESP_CCF_F0;
- else if(ccf == ESP_CCF_NEVER)
- esp->cfact = ESP_CCF_F2;
- else
- esp->cfact = ccf;
- esp->cfreq = fmhz;
- esp->ccycle = ESP_MHZ_TO_CYCLE(fmhz);
- esp->ctick = ESP_TICK(ccf, esp->ccycle);
- esp->neg_defp = ESP_NEG_DEFP(fmhz, ccf);
- esp->sync_defp = SYNC_DEFP_SLOW;
-
- printk("SCSI ID %d Clk %dMHz CCF=%d TOut %d ",
- esp->scsi_id, (esp->cfreq / 1000000),
- ccf, (int) esp->neg_defp);
-
- /* Fill in ehost data */
- esp->ehost->base = (unsigned long)eregs;
- esp->ehost->this_id = esp->scsi_id;
- esp->ehost->irq = esp->irq;
-
- /* SCSI id mask */
- esp->scsi_id_mask = (1 << esp->scsi_id);
-
- /* Probe the revision of this esp */
- esp->config1 = (ESP_CONFIG1_PENABLE | (esp->scsi_id & 7));
- esp->config2 = (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY);
- esp_write(eregs->esp_cfg2, esp->config2);
- if((esp_read(eregs->esp_cfg2) & ~(ESP_CONFIG2_MAGIC)) !=
- (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY)) {
- printk("NCR53C90(esp100)\n");
- esp->erev = esp100;
- } else {
- esp->config2 = 0;
- esp_write(eregs->esp_cfg2, 0);
- esp_write(eregs->esp_cfg3, 5);
- if(esp_read(eregs->esp_cfg3) != 5) {
- printk("NCR53C90A(esp100a)\n");
- esp->erev = esp100a;
- } else {
- int target;
-
- for(target=0; target<8; target++)
- esp->config3[target] = 0;
- esp->prev_cfg3 = 0;
- esp_write(eregs->esp_cfg3, 0);
- if(ccf > ESP_CCF_F5) {
- printk("NCR53C9XF(espfast)\n");
- esp->erev = fast;
- esp->sync_defp = SYNC_DEFP_FAST;
- } else {
- printk("NCR53C9x(esp236)\n");
- esp->erev = esp236;
- }
- }
- }
-
- /* Initialize the command queues */
- esp->current_SC = NULL;
- esp->disconnected_SC = NULL;
- esp->issue_SC = NULL;
-
- /* Clear the state machines. */
- esp->targets_present = 0;
- esp->resetting_bus = 0;
- esp->snip = 0;
-
- init_waitqueue_head(&esp->reset_queue);
-
- esp->fas_premature_intr_workaround = 0;
- for(i = 0; i < 32; i++)
- esp->espcmdlog[i] = 0;
- esp->espcmdent = 0;
- for(i = 0; i < 16; i++) {
- esp->cur_msgout[i] = 0;
- esp->cur_msgin[i] = 0;
- }
- esp->prevmsgout = esp->prevmsgin = 0;
- esp->msgout_len = esp->msgin_len = 0;
-
- /* Clear the one behind caches to hold unmatchable values. */
- esp->prev_soff = esp->prev_stp = esp->prev_cfg3 = 0xff;
-
- /* Reset the thing before we try anything... */
- esp_bootup_reset(esp, eregs);
-
- esps_in_use++;
-}
-
-/* The info function will return whatever useful
- * information the developer sees fit. If not provided, then
- * the name field will be used instead.
- */
-const char *esp_info(struct Scsi_Host *host)
-{
- struct NCR_ESP *esp;
-
- esp = (struct NCR_ESP *) host->hostdata;
- switch(esp->erev) {
- case esp100:
- return "ESP100 (NCR53C90)";
- case esp100a:
- return "ESP100A (NCR53C90A)";
- case esp236:
- return "ESP236 (NCR53C9x)";
- case fas216:
- return "Emulex FAS216";
- case fas236:
- return "Emulex FAS236";
- case fas366:
- return "QLogic FAS366";
- case fas100a:
- return "FPESP100A";
- case fsc:
- return "Symbios Logic 53CF9x-2";
- default:
- panic("Bogon ESP revision");
- };
-}
-EXPORT_SYMBOL(esp_info);
-
-/* From Wolfgang Stanglmeier's NCR scsi driver. */
-struct info_str
-{
- char *buffer;
- int length;
- int offset;
- int pos;
-};
-
-static void copy_mem_info(struct info_str *info, char *data, int len)
-{
- if (info->pos + len > info->length)
- len = info->length - info->pos;
-
- if (info->pos + len < info->offset) {
- info->pos += len;
- return;
- }
- if (info->pos < info->offset) {
- data += (info->offset - info->pos);
- len -= (info->offset - info->pos);
- }
-
- if (len > 0) {
- memcpy(info->buffer + info->pos, data, len);
- info->pos += len;
- }
-}
-
-static int copy_info(struct info_str *info, char *fmt, ...)
-{
- va_list args;
- char buf[81];
- int len;
-
- va_start(args, fmt);
- len = vsprintf(buf, fmt, args);
- va_end(args);
-
- copy_mem_info(info, buf, len);
- return len;
-}
-
-static int esp_host_info(struct NCR_ESP *esp, char *ptr, off_t offset, int len)
-{
- struct scsi_device *sdev;
- struct info_str info;
- int i;
-
- info.buffer = ptr;
- info.length = len;
- info.offset = offset;
- info.pos = 0;
-
- copy_info(&info, "ESP Host Adapter:\n");
- copy_info(&info, "\tESP Model\t\t");
- switch(esp->erev) {
- case esp100:
- copy_info(&info, "ESP100 (NCR53C90)\n");
- break;
- case esp100a:
- copy_info(&info, "ESP100A (NCR53C90A)\n");
- break;
- case esp236:
- copy_info(&info, "ESP236 (NCR53C9x)\n");
- break;
- case fas216:
- copy_info(&info, "Emulex FAS216\n");
- break;
- case fas236:
- copy_info(&info, "Emulex FAS236\n");
- break;
- case fas100a:
- copy_info(&info, "FPESP100A\n");
- break;
- case fast:
- copy_info(&info, "Generic FAST\n");
- break;
- case fas366:
- copy_info(&info, "QLogic FAS366\n");
- break;
- case fsc:
- copy_info(&info, "Symbios Logic 53C9x-2\n");
- break;
- case espunknown:
- default:
- copy_info(&info, "Unknown!\n");
- break;
- };
- copy_info(&info, "\tLive Targets\t\t[ ");
- for(i = 0; i < 15; i++) {
- if(esp->targets_present & (1 << i))
- copy_info(&info, "%d ", i);
- }
- copy_info(&info, "]\n\n");
-
- /* Now describe the state of each existing target. */
- copy_info(&info, "Target #\tconfig3\t\tSync Capabilities\tDisconnect\n");
-
- shost_for_each_device(sdev, esp->ehost) {
- struct esp_device *esp_dev = sdev->hostdata;
- uint id = sdev->id;
-
- if (!(esp->targets_present & (1 << id)))
- continue;
-
- copy_info(&info, "%d\t\t", id);
- copy_info(&info, "%08lx\t", esp->config3[id]);
- copy_info(&info, "[%02lx,%02lx]\t\t\t",
- esp_dev->sync_max_offset,
- esp_dev->sync_min_period);
- copy_info(&info, "%s\n", esp_dev->disconnect ? "yes" : "no");
- }
-
- return info.pos > info.offset? info.pos - info.offset : 0;
-}
-
-/* ESP proc filesystem code. */
-int esp_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, int length,
- int inout)
-{
- struct NCR_ESP *esp = (struct NCR_ESP *)shost->hostdata;
-
- if(inout)
- return -EINVAL; /* not yet */
- if(start)
- *start = buffer;
- return esp_host_info(esp, buffer, offset, length);
-}
-EXPORT_SYMBOL(esp_proc_info);
-
-static void esp_get_dmabufs(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- if(sp->use_sg == 0) {
- sp->SCp.this_residual = sp->request_bufflen;
- sp->SCp.buffer = (struct scatterlist *) sp->request_buffer;
- sp->SCp.buffers_residual = 0;
- if (esp->dma_mmu_get_scsi_one)
- esp->dma_mmu_get_scsi_one(esp, sp);
- else
- sp->SCp.ptr =
- (char *) virt_to_phys(sp->request_buffer);
- } else {
- sp->SCp.buffer = (struct scatterlist *) sp->request_buffer;
- sp->SCp.buffers_residual = sp->use_sg - 1;
- sp->SCp.this_residual = sp->SCp.buffer->length;
- if (esp->dma_mmu_get_scsi_sgl)
- esp->dma_mmu_get_scsi_sgl(esp, sp);
- else
- sp->SCp.ptr =
- (char *) virt_to_phys(sg_virt(sp->SCp.buffer));
- }
-}
-
-static void esp_release_dmabufs(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- if(sp->use_sg == 0) {
- if (esp->dma_mmu_release_scsi_one)
- esp->dma_mmu_release_scsi_one(esp, sp);
- } else {
- if (esp->dma_mmu_release_scsi_sgl)
- esp->dma_mmu_release_scsi_sgl(esp, sp);
- }
-}
-
-static void esp_restore_pointers(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- struct esp_pointers *ep = &esp->data_pointers[scmd_id(sp)];
-
- sp->SCp.ptr = ep->saved_ptr;
- sp->SCp.buffer = ep->saved_buffer;
- sp->SCp.this_residual = ep->saved_this_residual;
- sp->SCp.buffers_residual = ep->saved_buffers_residual;
-}
-
-static void esp_save_pointers(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- struct esp_pointers *ep = &esp->data_pointers[scmd_id(sp)];
-
- ep->saved_ptr = sp->SCp.ptr;
- ep->saved_buffer = sp->SCp.buffer;
- ep->saved_this_residual = sp->SCp.this_residual;
- ep->saved_buffers_residual = sp->SCp.buffers_residual;
-}
-
-/* Some rules:
- *
- * 1) Never ever panic while something is live on the bus.
- * If there is to be any chance of syncing the disks this
- * rule is to be obeyed.
- *
- * 2) Any target that causes a foul condition will no longer
- * have synchronous transfers done to it, no questions
- * asked.
- *
- * 3) Keep register accesses to a minimum. Think about some
- * day when we have Xbus machines this is running on and
- * the ESP chip is on the other end of the machine on a
- * different board from the cpu where this is running.
- */
-
-/* Fire off a command. We assume the bus is free and that the only
- * case where we could see an interrupt is where we have disconnected
- * commands active and they are trying to reselect us.
- */
-static inline void esp_check_cmd(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- switch(sp->cmd_len) {
- case 6:
- case 10:
- case 12:
- esp->esp_slowcmd = 0;
- break;
-
- default:
- esp->esp_slowcmd = 1;
- esp->esp_scmdleft = sp->cmd_len;
- esp->esp_scmdp = &sp->cmnd[0];
- break;
- };
-}
-
-static inline void build_sync_nego_msg(struct NCR_ESP *esp, int period, int offset)
-{
- esp->cur_msgout[0] = EXTENDED_MESSAGE;
- esp->cur_msgout[1] = 3;
- esp->cur_msgout[2] = EXTENDED_SDTR;
- esp->cur_msgout[3] = period;
- esp->cur_msgout[4] = offset;
- esp->msgout_len = 5;
-}
-
-static void esp_exec_cmd(struct NCR_ESP *esp)
-{
- struct ESP_regs *eregs = esp->eregs;
- struct esp_device *esp_dev;
- Scsi_Cmnd *SCptr;
- struct scsi_device *SDptr;
- volatile unchar *cmdp = esp->esp_command;
- unsigned char the_esp_command;
- int lun, target;
- int i;
-
- /* Hold off if we have disconnected commands and
- * an IRQ is showing...
- */
- if(esp->disconnected_SC && esp->dma_irq_p(esp))
- return;
-
- /* Grab first member of the issue queue. */
- SCptr = esp->current_SC = remove_first_SC(&esp->issue_SC);
-
- /* Safe to panic here because current_SC is null. */
- if(!SCptr)
- panic("esp: esp_exec_cmd and issue queue is NULL");
-
- SDptr = SCptr->device;
- esp_dev = SDptr->hostdata;
- lun = SCptr->device->lun;
- target = SCptr->device->id;
-
- esp->snip = 0;
- esp->msgout_len = 0;
-
- /* Send it out whole, or piece by piece? The ESP
- * only knows how to automatically send out 6, 10,
- * and 12 byte commands. I used to think that the
- * Linux SCSI code would never throw anything other
- * than that to us, but then again there is the
- * SCSI generic driver which can send us anything.
- */
- esp_check_cmd(esp, SCptr);
-
- /* If arbitration/selection is successful, the ESP will leave
- * ATN asserted, causing the target to go into message out
- * phase. The ESP will feed the target the identify and then
- * the target can only legally go to one of command,
- * datain/out, status, or message in phase, or stay in message
- * out phase (should we be trying to send a sync negotiation
- * message after the identify). It is not allowed to drop
- * BSY, but some buggy targets do and we check for this
- * condition in the selection complete code. Most of the time
- * we'll make the command bytes available to the ESP and it
- * will not interrupt us until it finishes command phase, we
- * cannot do this for command sizes the ESP does not
- * understand and in this case we'll get interrupted right
- * when the target goes into command phase.
- *
- * It is absolutely _illegal_ in the presence of SCSI-2 devices
- * to use the ESP select w/o ATN command. When SCSI-2 devices are
- * present on the bus we _must_ always go straight to message out
- * phase with an identify message for the target. Being that
- * selection attempts in SCSI-1 w/o ATN was an option, doing SCSI-2
- * selections should not confuse SCSI-1 we hope.
- */
-
- if(esp_dev->sync) {
- /* this targets sync is known */
-#ifdef CONFIG_SCSI_MAC_ESP
-do_sync_known:
-#endif
- if(esp_dev->disconnect)
- *cmdp++ = IDENTIFY(1, lun);
- else
- *cmdp++ = IDENTIFY(0, lun);
-
- if(esp->esp_slowcmd) {
- the_esp_command = (ESP_CMD_SELAS | ESP_CMD_DMA);
- esp_advance_phase(SCptr, in_slct_stop);
- } else {
- the_esp_command = (ESP_CMD_SELA | ESP_CMD_DMA);
- esp_advance_phase(SCptr, in_slct_norm);
- }
- } else if(!(esp->targets_present & (1<<target)) || !(esp_dev->disconnect)) {
- /* After the bootup SCSI code sends both the
- * TEST_UNIT_READY and INQUIRY commands we want
- * to at least attempt allowing the device to
- * disconnect.
- */
- ESPMISC(("esp: Selecting device for first time. target=%d "
- "lun=%d\n", target, SCptr->device->lun));
- if(!SDptr->borken && !esp_dev->disconnect)
- esp_dev->disconnect = 1;
-
- *cmdp++ = IDENTIFY(0, lun);
- esp->prevmsgout = NOP;
- esp_advance_phase(SCptr, in_slct_norm);
- the_esp_command = (ESP_CMD_SELA | ESP_CMD_DMA);
-
- /* Take no chances... */
- esp_dev->sync_max_offset = 0;
- esp_dev->sync_min_period = 0;
- } else {
- int toshiba_cdrom_hwbug_wkaround = 0;
-
-#ifdef CONFIG_SCSI_MAC_ESP
- /* Never allow synchronous transfers (disconnect OK) on
- * Macintosh. Well, maybe later when we figured out how to
- * do DMA on the machines that support it ...
- */
- esp_dev->disconnect = 1;
- esp_dev->sync_max_offset = 0;
- esp_dev->sync_min_period = 0;
- esp_dev->sync = 1;
- esp->snip = 0;
- goto do_sync_known;
-#endif
- /* We've talked to this guy before,
- * but never negotiated. Let's try
- * sync negotiation.
- */
- if(!SDptr->borken) {
- if((SDptr->type == TYPE_ROM) &&
- (!strncmp(SDptr->vendor, "TOSHIBA", 7))) {
- /* Nice try sucker... */
- ESPMISC(("esp%d: Disabling sync for buggy "
- "Toshiba CDROM.\n", esp->esp_id));
- toshiba_cdrom_hwbug_wkaround = 1;
- build_sync_nego_msg(esp, 0, 0);
- } else {
- build_sync_nego_msg(esp, esp->sync_defp, 15);
- }
- } else {
- build_sync_nego_msg(esp, 0, 0);
- }
- esp_dev->sync = 1;
- esp->snip = 1;
-
- /* A fix for broken SCSI1 targets, when they disconnect
- * they lock up the bus and confuse ESP. So disallow
- * disconnects for SCSI1 targets for now until we
- * find a better fix.
- *
- * Addendum: This is funny, I figured out what was going
- * on. The blotzed SCSI1 target would disconnect,
- * one of the other SCSI2 targets or both would be
- * disconnected as well. The SCSI1 target would
- * stay disconnected long enough that we start
- * up a command on one of the SCSI2 targets. As
- * the ESP is arbitrating for the bus the SCSI1
- * target begins to arbitrate as well to reselect
- * the ESP. The SCSI1 target refuses to drop it's
- * ID bit on the data bus even though the ESP is
- * at ID 7 and is the obvious winner for any
- * arbitration. The ESP is a poor sport and refuses
- * to lose arbitration, it will continue indefinitely
- * trying to arbitrate for the bus and can only be
- * stopped via a chip reset or SCSI bus reset.
- * Therefore _no_ disconnects for SCSI1 targets
- * thank you very much. ;-)
- */
- if(((SDptr->scsi_level < 3) && (SDptr->type != TYPE_TAPE)) ||
- toshiba_cdrom_hwbug_wkaround || SDptr->borken) {
- ESPMISC((KERN_INFO "esp%d: Disabling DISCONNECT for target %d "
- "lun %d\n", esp->esp_id, SCptr->device->id, SCptr->device->lun));
- esp_dev->disconnect = 0;
- *cmdp++ = IDENTIFY(0, lun);
- } else {
- *cmdp++ = IDENTIFY(1, lun);
- }
-
- /* ESP fifo is only so big...
- * Make this look like a slow command.
- */
- esp->esp_slowcmd = 1;
- esp->esp_scmdleft = SCptr->cmd_len;
- esp->esp_scmdp = &SCptr->cmnd[0];
-
- the_esp_command = (ESP_CMD_SELAS | ESP_CMD_DMA);
- esp_advance_phase(SCptr, in_slct_msg);
- }
-
- if(!esp->esp_slowcmd)
- for(i = 0; i < SCptr->cmd_len; i++)
- *cmdp++ = SCptr->cmnd[i];
-
- esp_write(eregs->esp_busid, (target & 7));
- if (esp->prev_soff != esp_dev->sync_max_offset ||
- esp->prev_stp != esp_dev->sync_min_period ||
- (esp->erev > esp100a &&
- esp->prev_cfg3 != esp->config3[target])) {
- esp->prev_soff = esp_dev->sync_max_offset;
- esp_write(eregs->esp_soff, esp->prev_soff);
- esp->prev_stp = esp_dev->sync_min_period;
- esp_write(eregs->esp_stp, esp->prev_stp);
- if(esp->erev > esp100a) {
- esp->prev_cfg3 = esp->config3[target];
- esp_write(eregs->esp_cfg3, esp->prev_cfg3);
- }
- }
- i = (cmdp - esp->esp_command);
-
- /* Set up the DMA and ESP counters */
- if(esp->do_pio_cmds){
- int j = 0;
-
- /*
- * XXX MSch:
- *
- * It seems this is required, at least to clean up
- * after failed commands when using PIO mode ...
- */
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
- for(;j<i;j++)
- esp_write(eregs->esp_fdata, esp->esp_command[j]);
- the_esp_command &= ~ESP_CMD_DMA;
-
- /* Tell ESP to "go". */
- esp_cmd(esp, eregs, the_esp_command);
- } else {
- /* Set up the ESP counters */
- esp_write(eregs->esp_tclow, i);
- esp_write(eregs->esp_tcmed, 0);
- esp->dma_init_write(esp, esp->esp_command_dvma, i);
-
- /* Tell ESP to "go". */
- esp_cmd(esp, eregs, the_esp_command);
- }
-}
-
-/* Queue a SCSI command delivered from the mid-level Linux SCSI code. */
-int esp_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
-{
- struct NCR_ESP *esp;
-
- /* Set up func ptr and initial driver cmd-phase. */
- SCpnt->scsi_done = done;
- SCpnt->SCp.phase = not_issued;
-
- esp = (struct NCR_ESP *) SCpnt->device->host->hostdata;
-
- if(esp->dma_led_on)
- esp->dma_led_on(esp);
-
- /* We use the scratch area. */
- ESPQUEUE(("esp_queue: target=%d lun=%d ", SCpnt->device->id, SCpnt->lun));
- ESPDISC(("N<%02x,%02x>", SCpnt->device->id, SCpnt->lun));
-
- esp_get_dmabufs(esp, SCpnt);
- esp_save_pointers(esp, SCpnt); /* FIXME for tag queueing */
-
- SCpnt->SCp.Status = CHECK_CONDITION;
- SCpnt->SCp.Message = 0xff;
- SCpnt->SCp.sent_command = 0;
-
- /* Place into our queue. */
- if(SCpnt->cmnd[0] == REQUEST_SENSE) {
- ESPQUEUE(("RQSENSE\n"));
- prepend_SC(&esp->issue_SC, SCpnt);
- } else {
- ESPQUEUE(("\n"));
- append_SC(&esp->issue_SC, SCpnt);
- }
-
- /* Run it now if we can. */
- if(!esp->current_SC && !esp->resetting_bus)
- esp_exec_cmd(esp);
-
- return 0;
-}
-
-/* Dump driver state. */
-static void esp_dump_cmd(Scsi_Cmnd *SCptr)
-{
- ESPLOG(("[tgt<%02x> lun<%02x> "
- "pphase<%s> cphase<%s>]",
- SCptr->device->id, SCptr->device->lun,
- phase_string(SCptr->SCp.sent_command),
- phase_string(SCptr->SCp.phase)));
-}
-
-static void esp_dump_state(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
-#ifdef DEBUG_ESP_CMDS
- int i;
-#endif
-
- ESPLOG(("esp%d: dumping state\n", esp->esp_id));
-
- /* Print DMA status */
- esp->dma_dump_state(esp);
-
- ESPLOG(("esp%d: SW [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
- esp->esp_id, esp->sreg, esp->seqreg, esp->ireg));
- ESPLOG(("esp%d: HW reread [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
- esp->esp_id, esp_read(eregs->esp_status), esp_read(eregs->esp_sstep),
- esp_read(eregs->esp_intrpt)));
-#ifdef DEBUG_ESP_CMDS
- printk("esp%d: last ESP cmds [", esp->esp_id);
- i = (esp->espcmdent - 1) & 31;
- printk("<");
- esp_print_cmd(esp->espcmdlog[i]);
- printk(">");
- i = (i - 1) & 31;
- printk("<");
- esp_print_cmd(esp->espcmdlog[i]);
- printk(">");
- i = (i - 1) & 31;
- printk("<");
- esp_print_cmd(esp->espcmdlog[i]);
- printk(">");
- i = (i - 1) & 31;
- printk("<");
- esp_print_cmd(esp->espcmdlog[i]);
- printk(">");
- printk("]\n");
-#endif /* (DEBUG_ESP_CMDS) */
-
- if(SCptr) {
- ESPLOG(("esp%d: current command ", esp->esp_id));
- esp_dump_cmd(SCptr);
- }
- ESPLOG(("\n"));
- SCptr = esp->disconnected_SC;
- ESPLOG(("esp%d: disconnected ", esp->esp_id));
- while(SCptr) {
- esp_dump_cmd(SCptr);
- SCptr = (Scsi_Cmnd *) SCptr->host_scribble;
- }
- ESPLOG(("\n"));
-}
-
-/* Abort a command. The host_lock is acquired by caller. */
-int esp_abort(Scsi_Cmnd *SCptr)
-{
- struct NCR_ESP *esp = (struct NCR_ESP *) SCptr->device->host->hostdata;
- struct ESP_regs *eregs = esp->eregs;
- int don;
-
- ESPLOG(("esp%d: Aborting command\n", esp->esp_id));
- esp_dump_state(esp, eregs);
-
- /* Wheee, if this is the current command on the bus, the
- * best we can do is assert ATN and wait for msgout phase.
- * This should even fix a hung SCSI bus when we lose state
- * in the driver and timeout because the eventual phase change
- * will cause the ESP to (eventually) give an interrupt.
- */
- if(esp->current_SC == SCptr) {
- esp->cur_msgout[0] = ABORT;
- esp->msgout_len = 1;
- esp->msgout_ctr = 0;
- esp_cmd(esp, eregs, ESP_CMD_SATN);
- return SUCCESS;
- }
-
- /* If it is still in the issue queue then we can safely
- * call the completion routine and report abort success.
- */
- don = esp->dma_ports_p(esp);
- if(don) {
- esp->dma_ints_off(esp);
- synchronize_irq(esp->irq);
- }
- if(esp->issue_SC) {
- Scsi_Cmnd **prev, *this;
- for(prev = (&esp->issue_SC), this = esp->issue_SC;
- this;
- prev = (Scsi_Cmnd **) &(this->host_scribble),
- this = (Scsi_Cmnd *) this->host_scribble) {
- if(this == SCptr) {
- *prev = (Scsi_Cmnd *) this->host_scribble;
- this->host_scribble = NULL;
- esp_release_dmabufs(esp, this);
- this->result = DID_ABORT << 16;
- this->scsi_done(this);
- if(don)
- esp->dma_ints_on(esp);
- return SUCCESS;
- }
- }
- }
-
- /* Yuck, the command to abort is disconnected, it is not
- * worth trying to abort it now if something else is live
- * on the bus at this time. So, we let the SCSI code wait
- * a little bit and try again later.
- */
- if(esp->current_SC) {
- if(don)
- esp->dma_ints_on(esp);
- return FAILED;
- }
-
- /* It's disconnected, we have to reconnect to re-establish
- * the nexus and tell the device to abort. However, we really
- * cannot 'reconnect' per se. Don't try to be fancy, just
- * indicate failure, which causes our caller to reset the whole
- * bus.
- */
-
- if(don)
- esp->dma_ints_on(esp);
- return FAILED;
-}
-
-/* We've sent ESP_CMD_RS to the ESP, the interrupt had just
- * arrived indicating the end of the SCSI bus reset. Our job
- * is to clean out the command queues and begin re-execution
- * of SCSI commands once more.
- */
-static int esp_finish_reset(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- Scsi_Cmnd *sp = esp->current_SC;
-
- /* Clean up currently executing command, if any. */
- if (sp != NULL) {
- esp_release_dmabufs(esp, sp);
- sp->result = (DID_RESET << 16);
- sp->scsi_done(sp);
- esp->current_SC = NULL;
- }
-
- /* Clean up disconnected queue, they have been invalidated
- * by the bus reset.
- */
- if (esp->disconnected_SC) {
- while((sp = remove_first_SC(&esp->disconnected_SC)) != NULL) {
- esp_release_dmabufs(esp, sp);
- sp->result = (DID_RESET << 16);
- sp->scsi_done(sp);
- }
- }
-
- /* SCSI bus reset is complete. */
- esp->resetting_bus = 0;
- wake_up(&esp->reset_queue);
-
- /* Ok, now it is safe to get commands going once more. */
- if(esp->issue_SC)
- esp_exec_cmd(esp);
-
- return do_intr_end;
-}
-
-static int esp_do_resetbus(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- ESPLOG(("esp%d: Resetting scsi bus\n", esp->esp_id));
- esp->resetting_bus = 1;
- esp_cmd(esp, eregs, ESP_CMD_RS);
-
- return do_intr_end;
-}
-
-/* Reset ESP chip, reset hanging bus, then kill active and
- * disconnected commands for targets without soft reset.
- *
- * The host_lock is acquired by caller.
- */
-int esp_reset(Scsi_Cmnd *SCptr)
-{
- struct NCR_ESP *esp = (struct NCR_ESP *) SCptr->device->host->hostdata;
-
- spin_lock_irq(esp->ehost->host_lock);
- (void) esp_do_resetbus(esp, esp->eregs);
- spin_unlock_irq(esp->ehost->host_lock);
-
- wait_event(esp->reset_queue, (esp->resetting_bus == 0));
-
- return SUCCESS;
-}
-
-/* Internal ESP done function. */
-static void esp_done(struct NCR_ESP *esp, int error)
-{
- Scsi_Cmnd *done_SC;
-
- if(esp->current_SC) {
- done_SC = esp->current_SC;
- esp->current_SC = NULL;
- esp_release_dmabufs(esp, done_SC);
- done_SC->result = error;
- done_SC->scsi_done(done_SC);
-
- /* Bus is free, issue any commands in the queue. */
- if(esp->issue_SC && !esp->current_SC)
- esp_exec_cmd(esp);
- } else {
- /* Panic is safe as current_SC is null so we may still
- * be able to accept more commands to sync disk buffers.
- */
- ESPLOG(("panicing\n"));
- panic("esp: done() called with NULL esp->current_SC");
- }
-}
-
-/* Wheee, ESP interrupt engine. */
-
-/* Forward declarations. */
-static int esp_do_phase_determine(struct NCR_ESP *esp,
- struct ESP_regs *eregs);
-static int esp_do_data_finale(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_select_complete(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_status(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgin(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgindone(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgout(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_cmdbegin(struct NCR_ESP *esp, struct ESP_regs *eregs);
-
-#define sreg_datainp(__sreg) (((__sreg) & ESP_STAT_PMASK) == ESP_DIP)
-#define sreg_dataoutp(__sreg) (((__sreg) & ESP_STAT_PMASK) == ESP_DOP)
-
-/* We try to avoid some interrupts by jumping ahead and see if the ESP
- * has gotten far enough yet. Hence the following.
- */
-static inline int skipahead1(struct NCR_ESP *esp, struct ESP_regs *eregs,
- Scsi_Cmnd *scp, int prev_phase, int new_phase)
-{
- if(scp->SCp.sent_command != prev_phase)
- return 0;
-
- if(esp->dma_irq_p(esp)) {
- /* Yes, we are able to save an interrupt. */
- esp->sreg = (esp_read(eregs->esp_status) & ~(ESP_STAT_INTR));
- esp->ireg = esp_read(eregs->esp_intrpt);
- if(!(esp->ireg & ESP_INTR_SR))
- return 0;
- else
- return do_reset_complete;
- }
- /* Ho hum, target is taking forever... */
- scp->SCp.sent_command = new_phase; /* so we don't recurse... */
- return do_intr_end;
-}
-
-static inline int skipahead2(struct NCR_ESP *esp,
- struct ESP_regs *eregs,
- Scsi_Cmnd *scp, int prev_phase1, int prev_phase2,
- int new_phase)
-{
- if(scp->SCp.sent_command != prev_phase1 &&
- scp->SCp.sent_command != prev_phase2)
- return 0;
- if(esp->dma_irq_p(esp)) {
- /* Yes, we are able to save an interrupt. */
- esp->sreg = (esp_read(eregs->esp_status) & ~(ESP_STAT_INTR));
- esp->ireg = esp_read(eregs->esp_intrpt);
- if(!(esp->ireg & ESP_INTR_SR))
- return 0;
- else
- return do_reset_complete;
- }
- /* Ho hum, target is taking forever... */
- scp->SCp.sent_command = new_phase; /* so we don't recurse... */
- return do_intr_end;
-}
-
-/* Misc. esp helper macros. */
-#define esp_setcount(__eregs, __cnt) \
- esp_write((__eregs)->esp_tclow, ((__cnt) & 0xff)); \
- esp_write((__eregs)->esp_tcmed, (((__cnt) >> 8) & 0xff))
-
-#define esp_getcount(__eregs) \
- ((esp_read((__eregs)->esp_tclow)&0xff) | \
- ((esp_read((__eregs)->esp_tcmed)&0xff) << 8))
-
-#define fcount(__esp, __eregs) \
- (esp_read((__eregs)->esp_fflags) & ESP_FF_FBYTES)
-
-#define fnzero(__esp, __eregs) \
- (esp_read((__eregs)->esp_fflags) & ESP_FF_ONOTZERO)
-
-/* XXX speculative nops unnecessary when continuing amidst a data phase
- * XXX even on esp100!!! another case of flooding the bus with I/O reg
- * XXX writes...
- */
-#define esp_maybe_nop(__esp, __eregs) \
- if((__esp)->erev == esp100) \
- esp_cmd((__esp), (__eregs), ESP_CMD_NULL)
-
-#define sreg_to_dataphase(__sreg) \
- ((((__sreg) & ESP_STAT_PMASK) == ESP_DOP) ? in_dataout : in_datain)
-
-/* The ESP100 when in synchronous data phase, can mistake a long final
- * REQ pulse from the target as an extra byte, it places whatever is on
- * the data lines into the fifo. For now, we will assume when this
- * happens that the target is a bit quirky and we don't want to
- * be talking synchronously to it anyways. Regardless, we need to
- * tell the ESP to eat the extraneous byte so that we can proceed
- * to the next phase.
- */
-static inline int esp100_sync_hwbug(struct NCR_ESP *esp, struct ESP_regs *eregs,
- Scsi_Cmnd *sp, int fifocnt)
-{
- /* Do not touch this piece of code. */
- if((!(esp->erev == esp100)) ||
- (!(sreg_datainp((esp->sreg = esp_read(eregs->esp_status))) && !fifocnt) &&
- !(sreg_dataoutp(esp->sreg) && !fnzero(esp, eregs)))) {
- if(sp->SCp.phase == in_dataout)
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
- return 0;
- } else {
- /* Async mode for this guy. */
- build_sync_nego_msg(esp, 0, 0);
-
- /* Ack the bogus byte, but set ATN first. */
- esp_cmd(esp, eregs, ESP_CMD_SATN);
- esp_cmd(esp, eregs, ESP_CMD_MOK);
- return 1;
- }
-}
-
-/* This closes the window during a selection with a reselect pending, because
- * we use DMA for the selection process the FIFO should hold the correct
- * contents if we get reselected during this process. So we just need to
- * ack the possible illegal cmd interrupt pending on the esp100.
- */
-static inline int esp100_reconnect_hwbug(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- volatile unchar junk;
-
- if(esp->erev != esp100)
- return 0;
- junk = esp_read(eregs->esp_intrpt);
-
- if(junk & ESP_INTR_SR)
- return 1;
- return 0;
-}
-
-/* This verifies the BUSID bits during a reselection so that we know which
- * target is talking to us.
- */
-static inline int reconnect_target(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- int it, me = esp->scsi_id_mask, targ = 0;
-
- if(2 != fcount(esp, eregs))
- return -1;
- it = esp_read(eregs->esp_fdata);
- if(!(it & me))
- return -1;
- it &= ~me;
- if(it & (it - 1))
- return -1;
- while(!(it & 1))
- targ++, it >>= 1;
- return targ;
-}
-
-/* This verifies the identify from the target so that we know which lun is
- * being reconnected.
- */
-static inline int reconnect_lun(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- int lun;
-
- if((esp->sreg & ESP_STAT_PMASK) != ESP_MIP)
- return -1;
- lun = esp_read(eregs->esp_fdata);
-
- /* Yes, you read this correctly. We report lun of zero
- * if we see parity error. ESP reports parity error for
- * the lun byte, and this is the only way to hope to recover
- * because the target is connected.
- */
- if(esp->sreg & ESP_STAT_PERR)
- return 0;
-
- /* Check for illegal bits being set in the lun. */
- if((lun & 0x40) || !(lun & 0x80))
- return -1;
-
- return lun & 7;
-}
-
-/* This puts the driver in a state where it can revitalize a command that
- * is being continued due to reselection.
- */
-static inline void esp_connect(struct NCR_ESP *esp, struct ESP_regs *eregs,
- Scsi_Cmnd *sp)
-{
- struct scsi_device *dp = sp->device;
- struct esp_device *esp_dev = dp->hostdata;
-
- if(esp->prev_soff != esp_dev->sync_max_offset ||
- esp->prev_stp != esp_dev->sync_min_period ||
- (esp->erev > esp100a &&
- esp->prev_cfg3 != esp->config3[scmd_id(sp)])) {
- esp->prev_soff = esp_dev->sync_max_offset;
- esp_write(eregs->esp_soff, esp->prev_soff);
- esp->prev_stp = esp_dev->sync_min_period;
- esp_write(eregs->esp_stp, esp->prev_stp);
- if(esp->erev > esp100a) {
- esp->prev_cfg3 = esp->config3[scmd_id(sp)];
- esp_write(eregs->esp_cfg3, esp->prev_cfg3);
- }
- }
- esp->current_SC = sp;
-}
-
-/* This will place the current working command back into the issue queue
- * if we are to receive a reselection amidst a selection attempt.
- */
-static inline void esp_reconnect(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- if(!esp->disconnected_SC)
- ESPLOG(("esp%d: Weird, being reselected but disconnected "
- "command queue is empty.\n", esp->esp_id));
- esp->snip = 0;
- esp->current_SC = NULL;
- sp->SCp.phase = not_issued;
- append_SC(&esp->issue_SC, sp);
-}
-
-/* Begin message in phase. */
-static int esp_do_msgin(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
- esp_maybe_nop(esp, eregs);
- esp_cmd(esp, eregs, ESP_CMD_TI);
- esp->msgin_len = 1;
- esp->msgin_ctr = 0;
- esp_advance_phase(esp->current_SC, in_msgindone);
- return do_work_bus;
-}
-
-static inline void advance_sg(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- ++sp->SCp.buffer;
- --sp->SCp.buffers_residual;
- sp->SCp.this_residual = sp->SCp.buffer->length;
- if (esp->dma_advance_sg)
- esp->dma_advance_sg (sp);
- else
- sp->SCp.ptr = (char *) virt_to_phys(sg_virt(sp->SCp.buffer));
-
-}
-
-/* Please note that the way I've coded these routines is that I _always_
- * check for a disconnect during any and all information transfer
- * phases. The SCSI standard states that the target _can_ cause a BUS
- * FREE condition by dropping all MSG/CD/IO/BSY signals. Also note
- * that during information transfer phases the target controls every
- * change in phase, the only thing the initiator can do is "ask" for
- * a message out phase by driving ATN true. The target can, and sometimes
- * will, completely ignore this request so we cannot assume anything when
- * we try to force a message out phase to abort/reset a target. Most of
- * the time the target will eventually be nice and go to message out, so
- * we may have to hold on to our state about what we want to tell the target
- * for some period of time.
- */
-
-/* I think I have things working here correctly. Even partial transfers
- * within a buffer or sub-buffer should not upset us at all no matter
- * how bad the target and/or ESP fucks things up.
- */
-static int esp_do_data(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
- int thisphase, hmuch;
-
- ESPDATA(("esp_do_data: "));
- esp_maybe_nop(esp, eregs);
- thisphase = sreg_to_dataphase(esp->sreg);
- esp_advance_phase(SCptr, thisphase);
- ESPDATA(("newphase<%s> ", (thisphase == in_datain) ? "DATAIN" : "DATAOUT"));
- hmuch = esp->dma_can_transfer(esp, SCptr);
-
- /*
- * XXX MSch: cater for PIO transfer here; PIO used if hmuch == 0
- */
- if (hmuch) { /* DMA */
- /*
- * DMA
- */
- ESPDATA(("hmuch<%d> ", hmuch));
- esp->current_transfer_size = hmuch;
- esp_setcount(eregs, (esp->fas_premature_intr_workaround ?
- (hmuch + 0x40) : hmuch));
- esp->dma_setup(esp, (__u32)((unsigned long)SCptr->SCp.ptr),
- hmuch, (thisphase == in_datain));
- ESPDATA(("DMA|TI --> do_intr_end\n"));
- esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
- return do_intr_end;
- /*
- * end DMA
- */
- } else {
- /*
- * PIO
- */
- int oldphase, i = 0; /* or where we left off last time ?? esp->current_data ?? */
- int fifocnt = 0;
- unsigned char *p = phys_to_virt((unsigned long)SCptr->SCp.ptr);
-
- oldphase = esp_read(eregs->esp_status) & ESP_STAT_PMASK;
-
- /*
- * polled transfer; ugly, can we make this happen in a DRQ
- * interrupt handler ??
- * requires keeping track of state information in host or
- * command struct!
- * Problem: I've never seen a DRQ happen on Mac, not even
- * with ESP_CMD_DMA ...
- */
-
- /* figure out how much needs to be transferred */
- hmuch = SCptr->SCp.this_residual;
- ESPDATA(("hmuch<%d> pio ", hmuch));
- esp->current_transfer_size = hmuch;
-
- /* tell the ESP ... */
- esp_setcount(eregs, hmuch);
-
- /* loop */
- while (hmuch) {
- int j, fifo_stuck = 0, newphase;
- unsigned long timeout;
-#if 0
- unsigned long flags;
-#endif
-#if 0
- if ( i % 10 )
- ESPDATA(("\r"));
- else
- ESPDATA(( /*"\n"*/ "\r"));
-#endif
-#if 0
- local_irq_save(flags);
-#endif
- if(thisphase == in_datain) {
- /* 'go' ... */
- esp_cmd(esp, eregs, ESP_CMD_TI);
-
- /* wait for data */
- timeout = 1000000;
- while (!((esp->sreg=esp_read(eregs->esp_status)) & ESP_STAT_INTR) && --timeout)
- udelay(2);
- if (timeout == 0)
- printk("DRQ datain timeout! \n");
-
- newphase = esp->sreg & ESP_STAT_PMASK;
-
- /* see how much we got ... */
- fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-
- if (!fifocnt)
- fifo_stuck++;
- else
- fifo_stuck = 0;
-
- ESPDATA(("\rgot %d st %x ph %x", fifocnt, esp->sreg, newphase));
-
- /* read fifo */
- for(j=0;j<fifocnt;j++)
- p[i++] = esp_read(eregs->esp_fdata);
-
- ESPDATA(("(%d) ", i));
-
- /* how many to go ?? */
- hmuch -= fifocnt;
-
- /* break if status phase !! */
- if(newphase == ESP_STATP) {
- /* clear int. */
- esp->ireg = esp_read(eregs->esp_intrpt);
- break;
- }
- } else {
-#define MAX_FIFO 8
- /* how much will fit ? */
- int this_count = MAX_FIFO - fifocnt;
- if (this_count > hmuch)
- this_count = hmuch;
-
- /* fill fifo */
- for(j=0;j<this_count;j++)
- esp_write(eregs->esp_fdata, p[i++]);
-
- /* how many left if this goes out ?? */
- hmuch -= this_count;
-
- /* 'go' ... */
- esp_cmd(esp, eregs, ESP_CMD_TI);
-
- /* wait for 'got it' */
- timeout = 1000000;
- while (!((esp->sreg=esp_read(eregs->esp_status)) & ESP_STAT_INTR) && --timeout)
- udelay(2);
- if (timeout == 0)
- printk("DRQ dataout timeout! \n");
-
- newphase = esp->sreg & ESP_STAT_PMASK;
-
- /* need to check how much was sent ?? */
- fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-
- ESPDATA(("\rsent %d st %x ph %x", this_count - fifocnt, esp->sreg, newphase));
-
- ESPDATA(("(%d) ", i));
-
- /* break if status phase !! */
- if(newphase == ESP_STATP) {
- /* clear int. */
- esp->ireg = esp_read(eregs->esp_intrpt);
- break;
- }
-
- }
-
- /* clear int. */
- esp->ireg = esp_read(eregs->esp_intrpt);
-
- ESPDATA(("ir %x ... ", esp->ireg));
-
- if (hmuch == 0)
- ESPDATA(("done! \n"));
-
-#if 0
- local_irq_restore(flags);
-#endif
-
- /* check new bus phase */
- if (newphase != oldphase && i < esp->current_transfer_size) {
- /* something happened; disconnect ?? */
- ESPDATA(("phase change, dropped out with %d done ... ", i));
- break;
- }
-
- /* check int. status */
- if (esp->ireg & ESP_INTR_DC) {
- /* disconnect */
- ESPDATA(("disconnect; %d transferred ... ", i));
- break;
- } else if (esp->ireg & ESP_INTR_FDONE) {
- /* function done */
- ESPDATA(("function done; %d transferred ... ", i));
- break;
- }
-
- /* XXX fixme: bail out on stall */
- if (fifo_stuck > 10) {
- /* we're stuck */
- ESPDATA(("fifo stall; %d transferred ... ", i));
- break;
- }
- }
-
- ESPDATA(("\n"));
- /* check successful completion ?? */
-
- if (thisphase == in_dataout)
- hmuch += fifocnt; /* stuck?? adjust data pointer ...*/
-
- /* tell do_data_finale how much was transferred */
- esp->current_transfer_size -= hmuch;
-
- /* still not completely sure on this one ... */
- return /*do_intr_end*/ do_work_bus /*do_phase_determine*/ ;
-
- /*
- * end PIO
- */
- }
- return do_intr_end;
-}
-
-/* See how successful the data transfer was. */
-static int esp_do_data_finale(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
- struct esp_device *esp_dev = SCptr->device->hostdata;
- int bogus_data = 0, bytes_sent = 0, fifocnt, ecount = 0;
-
- if(esp->dma_led_off)
- esp->dma_led_off(esp);
-
- ESPDATA(("esp_do_data_finale: "));
-
- if(SCptr->SCp.phase == in_datain) {
- if(esp->sreg & ESP_STAT_PERR) {
- /* Yuck, parity error. The ESP asserts ATN
- * so that we can go to message out phase
- * immediately and inform the target that
- * something bad happened.
- */
- ESPLOG(("esp%d: data bad parity detected.\n",
- esp->esp_id));
- esp->cur_msgout[0] = INITIATOR_ERROR;
- esp->msgout_len = 1;
- }
- if(esp->dma_drain)
- esp->dma_drain(esp);
- }
- if(esp->dma_invalidate)
- esp->dma_invalidate(esp);
-
- /* This could happen for the above parity error case. */
- if(!(esp->ireg == ESP_INTR_BSERV)) {
- /* Please go to msgout phase, please please please... */
- ESPLOG(("esp%d: !BSERV after data, probably to msgout\n",
- esp->esp_id));
- return esp_do_phase_determine(esp, eregs);
- }
-
- /* Check for partial transfers and other horrible events. */
- fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
- ecount = esp_getcount(eregs);
- if(esp->fas_premature_intr_workaround)
- ecount -= 0x40;
- bytes_sent = esp->current_transfer_size;
-
- ESPDATA(("trans_sz=%d, ", bytes_sent));
- if(!(esp->sreg & ESP_STAT_TCNT))
- bytes_sent -= ecount;
- if(SCptr->SCp.phase == in_dataout)
- bytes_sent -= fifocnt;
-
- ESPDATA(("bytes_sent=%d (ecount=%d, fifocnt=%d), ", bytes_sent,
- ecount, fifocnt));
-
- /* If we were in synchronous mode, check for peculiarities. */
- if(esp_dev->sync_max_offset)
- bogus_data = esp100_sync_hwbug(esp, eregs, SCptr, fifocnt);
- else
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
- /* Until we are sure of what has happened, we are certainly
- * in the dark.
- */
- esp_advance_phase(SCptr, in_the_dark);
-
- /* Check for premature interrupt condition. Can happen on FAS2x6
- * chips. QLogic recommends a workaround by overprogramming the
- * transfer counters, but this makes doing scatter-gather impossible.
- * Until there is a way to disable scatter-gather for a single target,
- * and not only for the entire host adapter as it is now, the workaround
- * is way to expensive performance wise.
- * Instead, it turns out that when this happens the target has disconnected
- * already but it doesn't show in the interrupt register. Compensate for
- * that here to try and avoid a SCSI bus reset.
- */
- if(!esp->fas_premature_intr_workaround && (fifocnt == 1) &&
- sreg_dataoutp(esp->sreg)) {
- ESPLOG(("esp%d: Premature interrupt, enabling workaround\n",
- esp->esp_id));
-#if 0
- /* Disable scatter-gather operations, they are not possible
- * when using this workaround.
- */
- esp->ehost->sg_tablesize = 0;
- esp->ehost->use_clustering = ENABLE_CLUSTERING;
- esp->fas_premature_intr_workaround = 1;
- bytes_sent = 0;
- if(SCptr->use_sg) {
- ESPLOG(("esp%d: Aborting scatter-gather operation\n",
- esp->esp_id));
- esp->cur_msgout[0] = ABORT;
- esp->msgout_len = 1;
- esp->msgout_ctr = 0;
- esp_cmd(esp, eregs, ESP_CMD_SATN);
- esp_setcount(eregs, 0xffff);
- esp_cmd(esp, eregs, ESP_CMD_NULL);
- esp_cmd(esp, eregs, ESP_CMD_TPAD | ESP_CMD_DMA);
- return do_intr_end;
- }
-#else
- /* Just set the disconnected bit. That's what appears to
- * happen anyway. The state machine will pick it up when
- * we return.
- */
- esp->ireg |= ESP_INTR_DC;
-#endif
- }
-
- if(bytes_sent < 0) {
- /* I've seen this happen due to lost state in this
- * driver. No idea why it happened, but allowing
- * this value to be negative caused things to
- * lock up. This allows greater chance of recovery.
- * In fact every time I've seen this, it has been
- * a driver bug without question.
- */
- ESPLOG(("esp%d: yieee, bytes_sent < 0!\n", esp->esp_id));
- ESPLOG(("esp%d: csz=%d fifocount=%d ecount=%d\n",
- esp->esp_id,
- esp->current_transfer_size, fifocnt, ecount));
- ESPLOG(("esp%d: use_sg=%d ptr=%p this_residual=%d\n",
- esp->esp_id,
- SCptr->use_sg, SCptr->SCp.ptr, SCptr->SCp.this_residual));
- ESPLOG(("esp%d: Forcing async for target %d\n", esp->esp_id,
- SCptr->device->id));
- SCptr->device->borken = 1;
- esp_dev->sync = 0;
- bytes_sent = 0;
- }
-
- /* Update the state of our transfer. */
- SCptr->SCp.ptr += bytes_sent;
- SCptr->SCp.this_residual -= bytes_sent;
- if(SCptr->SCp.this_residual < 0) {
- /* shit */
- ESPLOG(("esp%d: Data transfer overrun.\n", esp->esp_id));
- SCptr->SCp.this_residual = 0;
- }
-
- /* Maybe continue. */
- if(!bogus_data) {
- ESPDATA(("!bogus_data, "));
- /* NO MATTER WHAT, we advance the scatterlist,
- * if the target should decide to disconnect
- * in between scatter chunks (which is common)
- * we could die horribly! I used to have the sg
- * advance occur only if we are going back into
- * (or are staying in) a data phase, you can
- * imagine the hell I went through trying to
- * figure this out.
- */
- if(!SCptr->SCp.this_residual && SCptr->SCp.buffers_residual)
- advance_sg(esp, SCptr);
-#ifdef DEBUG_ESP_DATA
- if(sreg_datainp(esp->sreg) || sreg_dataoutp(esp->sreg)) {
- ESPDATA(("to more data\n"));
- } else {
- ESPDATA(("to new phase\n"));
- }
-#endif
- return esp_do_phase_determine(esp, eregs);
- }
- /* Bogus data, just wait for next interrupt. */
- ESPLOG(("esp%d: bogus_data during end of data phase\n",
- esp->esp_id));
- return do_intr_end;
-}
-
-/* We received a non-good status return at the end of
- * running a SCSI command. This is used to decide if
- * we should clear our synchronous transfer state for
- * such a device when that happens.
- *
- * The idea is that when spinning up a disk or rewinding
- * a tape, we don't want to go into a loop re-negotiating
- * synchronous capabilities over and over.
- */
-static int esp_should_clear_sync(Scsi_Cmnd *sp)
-{
- unchar cmd = sp->cmnd[0];
-
- /* These cases are for spinning up a disk and
- * waiting for that spinup to complete.
- */
- if(cmd == START_STOP)
- return 0;
-
- if(cmd == TEST_UNIT_READY)
- return 0;
-
- /* One more special case for SCSI tape drives,
- * this is what is used to probe the device for
- * completion of a rewind or tape load operation.
- */
- if(sp->device->type == TYPE_TAPE && cmd == MODE_SENSE)
- return 0;
-
- return 1;
-}
-
-/* Either a command is completing or a target is dropping off the bus
- * to continue the command in the background so we can do other work.
- */
-static int esp_do_freebus(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
- int rval;
-
- rval = skipahead2(esp, eregs, SCptr, in_status, in_msgindone, in_freeing);
- if(rval)
- return rval;
-
- if(esp->ireg != ESP_INTR_DC) {
- ESPLOG(("esp%d: Target will not disconnect\n", esp->esp_id));
- return do_reset_bus; /* target will not drop BSY... */
- }
- esp->msgout_len = 0;
- esp->prevmsgout = NOP;
- if(esp->prevmsgin == COMMAND_COMPLETE) {
- struct esp_device *esp_dev = SCptr->device->hostdata;
- /* Normal end of nexus. */
- if(esp->disconnected_SC)
- esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
- if(SCptr->SCp.Status != GOOD &&
- SCptr->SCp.Status != CONDITION_GOOD &&
- ((1<<scmd_id(SCptr)) & esp->targets_present) &&
- esp_dev->sync && esp_dev->sync_max_offset) {
- /* SCSI standard says that the synchronous capabilities
- * should be renegotiated at this point. Most likely
- * we are about to request sense from this target
- * in which case we want to avoid using sync
- * transfers until we are sure of the current target
- * state.
- */
- ESPMISC(("esp: Status <%d> for target %d lun %d\n",
- SCptr->SCp.Status, SCptr->device->id, SCptr->device->lun));
-
- /* But don't do this when spinning up a disk at
- * boot time while we poll for completion as it
- * fills up the console with messages. Also, tapes
- * can report not ready many times right after
- * loading up a tape.
- */
- if(esp_should_clear_sync(SCptr) != 0)
- esp_dev->sync = 0;
- }
- ESPDISC(("F<%02x,%02x>", SCptr->device->id, SCptr->device->lun));
- esp_done(esp, ((SCptr->SCp.Status & 0xff) |
- ((SCptr->SCp.Message & 0xff)<<8) |
- (DID_OK << 16)));
- } else if(esp->prevmsgin == DISCONNECT) {
- /* Normal disconnect. */
- esp_cmd(esp, eregs, ESP_CMD_ESEL);
- ESPDISC(("D<%02x,%02x>", SCptr->device->id, SCptr->device->lun));
- append_SC(&esp->disconnected_SC, SCptr);
- esp->current_SC = NULL;
- if(esp->issue_SC)
- esp_exec_cmd(esp);
- } else {
- /* Driver bug, we do not expect a disconnect here
- * and should not have advanced the state engine
- * to in_freeing.
- */
- ESPLOG(("esp%d: last msg not disc and not cmd cmplt.\n",
- esp->esp_id));
- return do_reset_bus;
- }
- return do_intr_end;
-}
-
-/* When a reselect occurs, and we cannot find the command to
- * reconnect to in our queues, we do this.
- */
-static int esp_bad_reconnect(struct NCR_ESP *esp)
-{
- Scsi_Cmnd *sp;
-
- ESPLOG(("esp%d: Eieeee, reconnecting unknown command!\n",
- esp->esp_id));
- ESPLOG(("QUEUE DUMP\n"));
- sp = esp->issue_SC;
- ESPLOG(("esp%d: issue_SC[", esp->esp_id));
- while(sp) {
- ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
- sp = (Scsi_Cmnd *) sp->host_scribble;
- }
- ESPLOG(("]\n"));
- sp = esp->current_SC;
- ESPLOG(("esp%d: current_SC[", esp->esp_id));
- while(sp) {
- ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
- sp = (Scsi_Cmnd *) sp->host_scribble;
- }
- ESPLOG(("]\n"));
- sp = esp->disconnected_SC;
- ESPLOG(("esp%d: disconnected_SC[", esp->esp_id));
- while(sp) {
- ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
- sp = (Scsi_Cmnd *) sp->host_scribble;
- }
- ESPLOG(("]\n"));
- return do_reset_bus;
-}
-
-/* Do the needy when a target tries to reconnect to us. */
-static int esp_do_reconnect(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- int lun, target;
- Scsi_Cmnd *SCptr;
-
- /* Check for all bogus conditions first. */
- target = reconnect_target(esp, eregs);
- if(target < 0) {
- ESPDISC(("bad bus bits\n"));
- return do_reset_bus;
- }
- lun = reconnect_lun(esp, eregs);
- if(lun < 0) {
- ESPDISC(("target=%2x, bad identify msg\n", target));
- return do_reset_bus;
- }
-
- /* Things look ok... */
- ESPDISC(("R<%02x,%02x>", target, lun));
-
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
- if(esp100_reconnect_hwbug(esp, eregs))
- return do_reset_bus;
- esp_cmd(esp, eregs, ESP_CMD_NULL);
-
- SCptr = remove_SC(&esp->disconnected_SC, (unchar) target, (unchar) lun);
- if(!SCptr)
- return esp_bad_reconnect(esp);
-
- esp_connect(esp, eregs, SCptr);
- esp_cmd(esp, eregs, ESP_CMD_MOK);
-
- /* Reconnect implies a restore pointers operation. */
- esp_restore_pointers(esp, SCptr);
-
- esp->snip = 0;
- esp_advance_phase(SCptr, in_the_dark);
- return do_intr_end;
-}
-
-/* End of NEXUS (hopefully), pick up status + message byte then leave if
- * all goes well.
- */
-static int esp_do_status(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
- int intr, rval;
-
- rval = skipahead1(esp, eregs, SCptr, in_the_dark, in_status);
- if(rval)
- return rval;
-
- intr = esp->ireg;
- ESPSTAT(("esp_do_status: "));
- if(intr != ESP_INTR_DC) {
- int message_out = 0; /* for parity problems */
-
- /* Ack the message. */
- ESPSTAT(("ack msg, "));
- esp_cmd(esp, eregs, ESP_CMD_MOK);
-
- if(esp->dma_poll)
- esp->dma_poll(esp, (unsigned char *) esp->esp_command);
-
- ESPSTAT(("got something, "));
- /* ESP chimes in with one of
- *
- * 1) function done interrupt:
- * both status and message in bytes
- * are available
- *
- * 2) bus service interrupt:
- * only status byte was acquired
- *
- * 3) Anything else:
- * can't happen, but we test for it
- * anyways
- *
- * ALSO: If bad parity was detected on either
- * the status _or_ the message byte then
- * the ESP has asserted ATN on the bus
- * and we must therefore wait for the
- * next phase change.
- */
- if(intr & ESP_INTR_FDONE) {
- /* We got it all, hallejulia. */
- ESPSTAT(("got both, "));
- SCptr->SCp.Status = esp->esp_command[0];
- SCptr->SCp.Message = esp->esp_command[1];
- esp->prevmsgin = SCptr->SCp.Message;
- esp->cur_msgin[0] = SCptr->SCp.Message;
- if(esp->sreg & ESP_STAT_PERR) {
- /* There was bad parity for the
- * message byte, the status byte
- * was ok.
- */
- message_out = MSG_PARITY_ERROR;
- }
- } else if(intr == ESP_INTR_BSERV) {
- /* Only got status byte. */
- ESPLOG(("esp%d: got status only, ", esp->esp_id));
- if(!(esp->sreg & ESP_STAT_PERR)) {
- SCptr->SCp.Status = esp->esp_command[0];
- SCptr->SCp.Message = 0xff;
- } else {
- /* The status byte had bad parity.
- * we leave the scsi_pointer Status
- * field alone as we set it to a default
- * of CHECK_CONDITION in esp_queue.
- */
- message_out = INITIATOR_ERROR;
- }
- } else {
- /* This shouldn't happen ever. */
- ESPSTAT(("got bolixed\n"));
- esp_advance_phase(SCptr, in_the_dark);
- return esp_do_phase_determine(esp, eregs);
- }
-
- if(!message_out) {
- ESPSTAT(("status=%2x msg=%2x, ", SCptr->SCp.Status,
- SCptr->SCp.Message));
- if(SCptr->SCp.Message == COMMAND_COMPLETE) {
- ESPSTAT(("and was COMMAND_COMPLETE\n"));
- esp_advance_phase(SCptr, in_freeing);
- return esp_do_freebus(esp, eregs);
- } else {
- ESPLOG(("esp%d: and _not_ COMMAND_COMPLETE\n",
- esp->esp_id));
- esp->msgin_len = esp->msgin_ctr = 1;
- esp_advance_phase(SCptr, in_msgindone);
- return esp_do_msgindone(esp, eregs);
- }
- } else {
- /* With luck we'll be able to let the target
- * know that bad parity happened, it will know
- * which byte caused the problems and send it
- * again. For the case where the status byte
- * receives bad parity, I do not believe most
- * targets recover very well. We'll see.
- */
- ESPLOG(("esp%d: bad parity somewhere mout=%2x\n",
- esp->esp_id, message_out));
- esp->cur_msgout[0] = message_out;
- esp->msgout_len = esp->msgout_ctr = 1;
- esp_advance_phase(SCptr, in_the_dark);
- return esp_do_phase_determine(esp, eregs);
- }
- } else {
- /* If we disconnect now, all hell breaks loose. */
- ESPLOG(("esp%d: whoops, disconnect\n", esp->esp_id));
- esp_advance_phase(SCptr, in_the_dark);
- return esp_do_phase_determine(esp, eregs);
- }
-}
-
-static int esp_enter_status(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- unchar thecmd = ESP_CMD_ICCSEQ;
-
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
- if(esp->do_pio_cmds) {
- esp_advance_phase(esp->current_SC, in_status);
- esp_cmd(esp, eregs, thecmd);
- while(!(esp_read(esp->eregs->esp_status) & ESP_STAT_INTR));
- esp->esp_command[0] = esp_read(eregs->esp_fdata);
- while(!(esp_read(esp->eregs->esp_status) & ESP_STAT_INTR));
- esp->esp_command[1] = esp_read(eregs->esp_fdata);
- } else {
- esp->esp_command[0] = esp->esp_command[1] = 0xff;
- esp_write(eregs->esp_tclow, 2);
- esp_write(eregs->esp_tcmed, 0);
- esp->dma_init_read(esp, esp->esp_command_dvma, 2);
- thecmd |= ESP_CMD_DMA;
- esp_cmd(esp, eregs, thecmd);
- esp_advance_phase(esp->current_SC, in_status);
- }
-
- return esp_do_status(esp, eregs);
-}
-
-static int esp_disconnect_amidst_phases(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- Scsi_Cmnd *sp = esp->current_SC;
- struct esp_device *esp_dev = sp->device->hostdata;
-
- /* This means real problems if we see this
- * here. Unless we were actually trying
- * to force the device to abort/reset.
- */
- ESPLOG(("esp%d: Disconnect amidst phases, ", esp->esp_id));
- ESPLOG(("pphase<%s> cphase<%s>, ",
- phase_string(sp->SCp.phase),
- phase_string(sp->SCp.sent_command)));
-
- if(esp->disconnected_SC)
- esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
- switch(esp->cur_msgout[0]) {
- default:
- /* We didn't expect this to happen at all. */
- ESPLOG(("device is bolixed\n"));
- esp_advance_phase(sp, in_tgterror);
- esp_done(esp, (DID_ERROR << 16));
- break;
-
- case BUS_DEVICE_RESET:
- ESPLOG(("device reset successful\n"));
- esp_dev->sync_max_offset = 0;
- esp_dev->sync_min_period = 0;
- esp_dev->sync = 0;
- esp_advance_phase(sp, in_resetdev);
- esp_done(esp, (DID_RESET << 16));
- break;
-
- case ABORT:
- ESPLOG(("device abort successful\n"));
- esp_advance_phase(sp, in_abortone);
- esp_done(esp, (DID_ABORT << 16));
- break;
-
- };
- return do_intr_end;
-}
-
-static int esp_enter_msgout(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- esp_advance_phase(esp->current_SC, in_msgout);
- return esp_do_msgout(esp, eregs);
-}
-
-static int esp_enter_msgin(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- esp_advance_phase(esp->current_SC, in_msgin);
- return esp_do_msgin(esp, eregs);
-}
-
-static int esp_enter_cmd(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- esp_advance_phase(esp->current_SC, in_cmdbegin);
- return esp_do_cmdbegin(esp, eregs);
-}
-
-static int esp_enter_badphase(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- ESPLOG(("esp%d: Bizarre bus phase %2x.\n", esp->esp_id,
- esp->sreg & ESP_STAT_PMASK));
- return do_reset_bus;
-}
-
-typedef int (*espfunc_t)(struct NCR_ESP *,
- struct ESP_regs *);
-
-static espfunc_t phase_vector[] = {
- esp_do_data, /* ESP_DOP */
- esp_do_data, /* ESP_DIP */
- esp_enter_cmd, /* ESP_CMDP */
- esp_enter_status, /* ESP_STATP */
- esp_enter_badphase, /* ESP_STAT_PMSG */
- esp_enter_badphase, /* ESP_STAT_PMSG | ESP_STAT_PIO */
- esp_enter_msgout, /* ESP_MOP */
- esp_enter_msgin, /* ESP_MIP */
-};
-
-/* The target has control of the bus and we have to see where it has
- * taken us.
- */
-static int esp_do_phase_determine(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- if ((esp->ireg & ESP_INTR_DC) != 0)
- return esp_disconnect_amidst_phases(esp, eregs);
- return phase_vector[esp->sreg & ESP_STAT_PMASK](esp, eregs);
-}
-
-/* First interrupt after exec'ing a cmd comes here. */
-static int esp_select_complete(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
- struct esp_device *esp_dev = SCptr->device->hostdata;
- int cmd_bytes_sent, fcnt;
-
- fcnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
- cmd_bytes_sent = esp->dma_bytes_sent(esp, fcnt);
- if(esp->dma_invalidate)
- esp->dma_invalidate(esp);
-
- /* Let's check to see if a reselect happened
- * while we we're trying to select. This must
- * be checked first.
- */
- if(esp->ireg == (ESP_INTR_RSEL | ESP_INTR_FDONE)) {
- esp_reconnect(esp, SCptr);
- return esp_do_reconnect(esp, eregs);
- }
-
- /* Looks like things worked, we should see a bus service &
- * a function complete interrupt at this point. Note we
- * are doing a direct comparison because we don't want to
- * be fooled into thinking selection was successful if
- * ESP_INTR_DC is set, see below.
- */
- if(esp->ireg == (ESP_INTR_FDONE | ESP_INTR_BSERV)) {
- /* target speaks... */
- esp->targets_present |= (1<<scmd_id(SCptr));
-
- /* What if the target ignores the sdtr? */
- if(esp->snip)
- esp_dev->sync = 1;
-
- /* See how far, if at all, we got in getting
- * the information out to the target.
- */
- switch(esp->seqreg) {
- default:
-
- case ESP_STEP_ASEL:
- /* Arbitration won, target selected, but
- * we are in some phase which is not command
- * phase nor is it message out phase.
- *
- * XXX We've confused the target, obviously.
- * XXX So clear it's state, but we also end
- * XXX up clearing everyone elses. That isn't
- * XXX so nice. I'd like to just reset this
- * XXX target, but if I cannot even get it's
- * XXX attention and finish selection to talk
- * XXX to it, there is not much more I can do.
- * XXX If we have a loaded bus we're going to
- * XXX spend the next second or so renegotiating
- * XXX for synchronous transfers.
- */
- ESPLOG(("esp%d: STEP_ASEL for tgt %d\n",
- esp->esp_id, SCptr->device->id));
-
- case ESP_STEP_SID:
- /* Arbitration won, target selected, went
- * to message out phase, sent one message
- * byte, then we stopped. ATN is asserted
- * on the SCSI bus and the target is still
- * there hanging on. This is a legal
- * sequence step if we gave the ESP a select
- * and stop command.
- *
- * XXX See above, I could set the borken flag
- * XXX in the device struct and retry the
- * XXX command. But would that help for
- * XXX tagged capable targets?
- */
-
- case ESP_STEP_NCMD:
- /* Arbitration won, target selected, maybe
- * sent the one message byte in message out
- * phase, but we did not go to command phase
- * in the end. Actually, we could have sent
- * only some of the message bytes if we tried
- * to send out the entire identify and tag
- * message using ESP_CMD_SA3.
- */
- cmd_bytes_sent = 0;
- break;
-
- case ESP_STEP_PPC:
- /* No, not the powerPC pinhead. Arbitration
- * won, all message bytes sent if we went to
- * message out phase, went to command phase
- * but only part of the command was sent.
- *
- * XXX I've seen this, but usually in conjunction
- * XXX with a gross error which appears to have
- * XXX occurred between the time I told the
- * XXX ESP to arbitrate and when I got the
- * XXX interrupt. Could I have misloaded the
- * XXX command bytes into the fifo? Actually,
- * XXX I most likely missed a phase, and therefore
- * XXX went into never never land and didn't even
- * XXX know it. That was the old driver though.
- * XXX What is even more peculiar is that the ESP
- * XXX showed the proper function complete and
- * XXX bus service bits in the interrupt register.
- */
-
- case ESP_STEP_FINI4:
- case ESP_STEP_FINI5:
- case ESP_STEP_FINI6:
- case ESP_STEP_FINI7:
- /* Account for the identify message */
- if(SCptr->SCp.phase == in_slct_norm)
- cmd_bytes_sent -= 1;
- };
- esp_cmd(esp, eregs, ESP_CMD_NULL);
-
- /* Be careful, we could really get fucked during synchronous
- * data transfers if we try to flush the fifo now.
- */
- if(!fcnt && /* Fifo is empty and... */
- /* either we are not doing synchronous transfers or... */
- (!esp_dev->sync_max_offset ||
- /* We are not going into data in phase. */
- ((esp->sreg & ESP_STAT_PMASK) != ESP_DIP)))
- esp_cmd(esp, eregs, ESP_CMD_FLUSH); /* flush is safe */
-
- /* See how far we got if this is not a slow command. */
- if(!esp->esp_slowcmd) {
- if(cmd_bytes_sent < 0)
- cmd_bytes_sent = 0;
- if(cmd_bytes_sent != SCptr->cmd_len) {
- /* Crapola, mark it as a slowcmd
- * so that we have some chance of
- * keeping the command alive with
- * good luck.
- *
- * XXX Actually, if we didn't send it all
- * XXX this means either we didn't set things
- * XXX up properly (driver bug) or the target
- * XXX or the ESP detected parity on one of
- * XXX the command bytes. This makes much
- * XXX more sense, and therefore this code
- * XXX should be changed to send out a
- * XXX parity error message or if the status
- * XXX register shows no parity error then
- * XXX just expect the target to bring the
- * XXX bus into message in phase so that it
- * XXX can send us the parity error message.
- * XXX SCSI sucks...
- */
- esp->esp_slowcmd = 1;
- esp->esp_scmdp = &(SCptr->cmnd[cmd_bytes_sent]);
- esp->esp_scmdleft = (SCptr->cmd_len - cmd_bytes_sent);
- }
- }
-
- /* Now figure out where we went. */
- esp_advance_phase(SCptr, in_the_dark);
- return esp_do_phase_determine(esp, eregs);
- }
-
- /* Did the target even make it? */
- if(esp->ireg == ESP_INTR_DC) {
- /* wheee... nobody there or they didn't like
- * what we told it to do, clean up.
- */
-
- /* If anyone is off the bus, but working on
- * a command in the background for us, tell
- * the ESP to listen for them.
- */
- if(esp->disconnected_SC)
- esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
- if(((1<<SCptr->device->id) & esp->targets_present) &&
- esp->seqreg && esp->cur_msgout[0] == EXTENDED_MESSAGE &&
- (SCptr->SCp.phase == in_slct_msg ||
- SCptr->SCp.phase == in_slct_stop)) {
- /* shit */
- esp->snip = 0;
- ESPLOG(("esp%d: Failed synchronous negotiation for target %d "
- "lun %d\n", esp->esp_id, SCptr->device->id, SCptr->device->lun));
- esp_dev->sync_max_offset = 0;
- esp_dev->sync_min_period = 0;
- esp_dev->sync = 1; /* so we don't negotiate again */
-
- /* Run the command again, this time though we
- * won't try to negotiate for synchronous transfers.
- *
- * XXX I'd like to do something like send an
- * XXX INITIATOR_ERROR or ABORT message to the
- * XXX target to tell it, "Sorry I confused you,
- * XXX please come back and I will be nicer next
- * XXX time". But that requires having the target
- * XXX on the bus, and it has dropped BSY on us.
- */
- esp->current_SC = NULL;
- esp_advance_phase(SCptr, not_issued);
- prepend_SC(&esp->issue_SC, SCptr);
- esp_exec_cmd(esp);
- return do_intr_end;
- }
-
- /* Ok, this is normal, this is what we see during boot
- * or whenever when we are scanning the bus for targets.
- * But first make sure that is really what is happening.
- */
- if(((1<<SCptr->device->id) & esp->targets_present)) {
- ESPLOG(("esp%d: Warning, live target %d not responding to "
- "selection.\n", esp->esp_id, SCptr->device->id));
-
- /* This _CAN_ happen. The SCSI standard states that
- * the target is to _not_ respond to selection if
- * _it_ detects bad parity on the bus for any reason.
- * Therefore, we assume that if we've talked successfully
- * to this target before, bad parity is the problem.
- */
- esp_done(esp, (DID_PARITY << 16));
- } else {
- /* Else, there really isn't anyone there. */
- ESPMISC(("esp: selection failure, maybe nobody there?\n"));
- ESPMISC(("esp: target %d lun %d\n",
- SCptr->device->id, SCptr->device->lun));
- esp_done(esp, (DID_BAD_TARGET << 16));
- }
- return do_intr_end;
- }
-
-
- ESPLOG(("esp%d: Selection failure.\n", esp->esp_id));
- printk("esp%d: Currently -- ", esp->esp_id);
- esp_print_ireg(esp->ireg);
- printk(" ");
- esp_print_statreg(esp->sreg);
- printk(" ");
- esp_print_seqreg(esp->seqreg);
- printk("\n");
- printk("esp%d: New -- ", esp->esp_id);
- esp->sreg = esp_read(eregs->esp_status);
- esp->seqreg = esp_read(eregs->esp_sstep);
- esp->ireg = esp_read(eregs->esp_intrpt);
- esp_print_ireg(esp->ireg);
- printk(" ");
- esp_print_statreg(esp->sreg);
- printk(" ");
- esp_print_seqreg(esp->seqreg);
- printk("\n");
- ESPLOG(("esp%d: resetting bus\n", esp->esp_id));
- return do_reset_bus; /* ugh... */
-}
-
-/* Continue reading bytes for msgin phase. */
-static int esp_do_msgincont(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- if(esp->ireg & ESP_INTR_BSERV) {
- /* in the right phase too? */
- if((esp->sreg & ESP_STAT_PMASK) == ESP_MIP) {
- /* phew... */
- esp_cmd(esp, eregs, ESP_CMD_TI);
- esp_advance_phase(esp->current_SC, in_msgindone);
- return do_intr_end;
- }
-
- /* We changed phase but ESP shows bus service,
- * in this case it is most likely that we, the
- * hacker who has been up for 20hrs straight
- * staring at the screen, drowned in coffee
- * smelling like retched cigarette ashes
- * have miscoded something..... so, try to
- * recover as best we can.
- */
- ESPLOG(("esp%d: message in mis-carriage.\n", esp->esp_id));
- }
- esp_advance_phase(esp->current_SC, in_the_dark);
- return do_phase_determine;
-}
-
-static int check_singlebyte_msg(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- esp->prevmsgin = esp->cur_msgin[0];
- if(esp->cur_msgin[0] & 0x80) {
- /* wheee... */
- ESPLOG(("esp%d: target sends identify amidst phases\n",
- esp->esp_id));
- esp_advance_phase(esp->current_SC, in_the_dark);
- return 0;
- } else if(((esp->cur_msgin[0] & 0xf0) == 0x20) ||
- (esp->cur_msgin[0] == EXTENDED_MESSAGE)) {
- esp->msgin_len = 2;
- esp_advance_phase(esp->current_SC, in_msgincont);
- return 0;
- }
- esp_advance_phase(esp->current_SC, in_the_dark);
- switch(esp->cur_msgin[0]) {
- default:
- /* We don't want to hear about it. */
- ESPLOG(("esp%d: msg %02x which we don't know about\n", esp->esp_id,
- esp->cur_msgin[0]));
- return MESSAGE_REJECT;
-
- case NOP:
- ESPLOG(("esp%d: target %d sends a nop\n", esp->esp_id,
- esp->current_SC->device->id));
- return 0;
-
- case RESTORE_POINTERS:
- /* In this case we might also have to backup the
- * "slow command" pointer. It is rare to get such
- * a save/restore pointer sequence so early in the
- * bus transition sequences, but cover it.
- */
- if(esp->esp_slowcmd) {
- esp->esp_scmdleft = esp->current_SC->cmd_len;
- esp->esp_scmdp = &esp->current_SC->cmnd[0];
- }
- esp_restore_pointers(esp, esp->current_SC);
- return 0;
-
- case SAVE_POINTERS:
- esp_save_pointers(esp, esp->current_SC);
- return 0;
-
- case COMMAND_COMPLETE:
- case DISCONNECT:
- /* Freeing the bus, let it go. */
- esp->current_SC->SCp.phase = in_freeing;
- return 0;
-
- case MESSAGE_REJECT:
- ESPMISC(("msg reject, "));
- if(esp->prevmsgout == EXTENDED_MESSAGE) {
- struct esp_device *esp_dev = esp->current_SC->device->hostdata;
-
- /* Doesn't look like this target can
- * do synchronous or WIDE transfers.
- */
- ESPSDTR(("got reject, was trying nego, clearing sync/WIDE\n"));
- esp_dev->sync = 1;
- esp_dev->wide = 1;
- esp_dev->sync_min_period = 0;
- esp_dev->sync_max_offset = 0;
- return 0;
- } else {
- ESPMISC(("not sync nego, sending ABORT\n"));
- return ABORT;
- }
- };
-}
-
-/* Target negotiates for synchronous transfers before we do, this
- * is legal although very strange. What is even funnier is that
- * the SCSI2 standard specifically recommends against targets doing
- * this because so many initiators cannot cope with this occurring.
- */
-static int target_with_ants_in_pants(struct NCR_ESP *esp,
- Scsi_Cmnd *SCptr,
- struct esp_device *esp_dev)
-{
- if(esp_dev->sync || SCptr->device->borken) {
- /* sorry, no can do */
- ESPSDTR(("forcing to async, "));
- build_sync_nego_msg(esp, 0, 0);
- esp_dev->sync = 1;
- esp->snip = 1;
- ESPLOG(("esp%d: hoping for msgout\n", esp->esp_id));
- esp_advance_phase(SCptr, in_the_dark);
- return EXTENDED_MESSAGE;
- }
-
- /* Ok, we'll check them out... */
- return 0;
-}
-
-static void sync_report(struct NCR_ESP *esp)
-{
- int msg3, msg4;
- char *type;
-
- msg3 = esp->cur_msgin[3];
- msg4 = esp->cur_msgin[4];
- if(msg4) {
- int hz = 1000000000 / (msg3 * 4);
- int integer = hz / 1000000;
- int fraction = (hz - (integer * 1000000)) / 10000;
- if((msg3 * 4) < 200) {
- type = "FAST";
- } else {
- type = "synchronous";
- }
-
- /* Do not transform this back into one big printk
- * again, it triggers a bug in our sparc64-gcc272
- * sibling call optimization. -DaveM
- */
- ESPLOG((KERN_INFO "esp%d: target %d ",
- esp->esp_id, esp->current_SC->device->id));
- ESPLOG(("[period %dns offset %d %d.%02dMHz ",
- (int) msg3 * 4, (int) msg4,
- integer, fraction));
- ESPLOG(("%s SCSI%s]\n", type,
- (((msg3 * 4) < 200) ? "-II" : "")));
- } else {
- ESPLOG((KERN_INFO "esp%d: target %d asynchronous\n",
- esp->esp_id, esp->current_SC->device->id));
- }
-}
-
-static int check_multibyte_msg(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
- struct esp_device *esp_dev = SCptr->device->hostdata;
- unchar regval = 0;
- int message_out = 0;
-
- ESPSDTR(("chk multibyte msg: "));
- if(esp->cur_msgin[2] == EXTENDED_SDTR) {
- int period = esp->cur_msgin[3];
- int offset = esp->cur_msgin[4];
-
- ESPSDTR(("is sync nego response, "));
- if(!esp->snip) {
- int rval;
-
- /* Target negotiates first! */
- ESPSDTR(("target jumps the gun, "));
- message_out = EXTENDED_MESSAGE; /* we must respond */
- rval = target_with_ants_in_pants(esp, SCptr, esp_dev);
- if(rval)
- return rval;
- }
-
- ESPSDTR(("examining sdtr, "));
-
- /* Offset cannot be larger than ESP fifo size. */
- if(offset > 15) {
- ESPSDTR(("offset too big %2x, ", offset));
- offset = 15;
- ESPSDTR(("sending back new offset\n"));
- build_sync_nego_msg(esp, period, offset);
- return EXTENDED_MESSAGE;
- }
-
- if(offset && period > esp->max_period) {
- /* Yeee, async for this slow device. */
- ESPSDTR(("period too long %2x, ", period));
- build_sync_nego_msg(esp, 0, 0);
- ESPSDTR(("hoping for msgout\n"));
- esp_advance_phase(esp->current_SC, in_the_dark);
- return EXTENDED_MESSAGE;
- } else if (offset && period < esp->min_period) {
- ESPSDTR(("period too short %2x, ", period));
- period = esp->min_period;
- if(esp->erev > esp236)
- regval = 4;
- else
- regval = 5;
- } else if(offset) {
- int tmp;
-
- ESPSDTR(("period is ok, "));
- tmp = esp->ccycle / 1000;
- regval = (((period << 2) + tmp - 1) / tmp);
- if(regval && (esp->erev > esp236)) {
- if(period >= 50)
- regval--;
- }
- }
-
- if(offset) {
- unchar bit;
-
- esp_dev->sync_min_period = (regval & 0x1f);
- esp_dev->sync_max_offset = (offset | esp->radelay);
- if(esp->erev > esp236) {
- if(esp->erev == fas100a)
- bit = ESP_CONFIG3_FAST;
- else
- bit = ESP_CONFIG3_FSCSI;
- if(period < 50)
- esp->config3[SCptr->device->id] |= bit;
- else
- esp->config3[SCptr->device->id] &= ~bit;
- esp->prev_cfg3 = esp->config3[SCptr->device->id];
- esp_write(eregs->esp_cfg3, esp->prev_cfg3);
- }
- esp->prev_soff = esp_dev->sync_min_period;
- esp_write(eregs->esp_soff, esp->prev_soff);
- esp->prev_stp = esp_dev->sync_max_offset;
- esp_write(eregs->esp_stp, esp->prev_stp);
-
- ESPSDTR(("soff=%2x stp=%2x cfg3=%2x\n",
- esp_dev->sync_max_offset,
- esp_dev->sync_min_period,
- esp->config3[scmd_id(SCptr)]));
-
- esp->snip = 0;
- } else if(esp_dev->sync_max_offset) {
- unchar bit;
-
- /* back to async mode */
- ESPSDTR(("unaccaptable sync nego, forcing async\n"));
- esp_dev->sync_max_offset = 0;
- esp_dev->sync_min_period = 0;
- esp->prev_soff = 0;
- esp_write(eregs->esp_soff, 0);
- esp->prev_stp = 0;
- esp_write(eregs->esp_stp, 0);
- if(esp->erev > esp236) {
- if(esp->erev == fas100a)
- bit = ESP_CONFIG3_FAST;
- else
- bit = ESP_CONFIG3_FSCSI;
- esp->config3[SCptr->device->id] &= ~bit;
- esp->prev_cfg3 = esp->config3[SCptr->device->id];
- esp_write(eregs->esp_cfg3, esp->prev_cfg3);
- }
- }
-
- sync_report(esp);
-
- ESPSDTR(("chk multibyte msg: sync is known, "));
- esp_dev->sync = 1;
-
- if(message_out) {
- ESPLOG(("esp%d: sending sdtr back, hoping for msgout\n",
- esp->esp_id));
- build_sync_nego_msg(esp, period, offset);
- esp_advance_phase(SCptr, in_the_dark);
- return EXTENDED_MESSAGE;
- }
-
- ESPSDTR(("returning zero\n"));
- esp_advance_phase(SCptr, in_the_dark); /* ...or else! */
- return 0;
- } else if(esp->cur_msgin[2] == EXTENDED_WDTR) {
- ESPLOG(("esp%d: AIEEE wide msg received\n", esp->esp_id));
- message_out = MESSAGE_REJECT;
- } else if(esp->cur_msgin[2] == EXTENDED_MODIFY_DATA_POINTER) {
- ESPLOG(("esp%d: rejecting modify data ptr msg\n", esp->esp_id));
- message_out = MESSAGE_REJECT;
- }
- esp_advance_phase(SCptr, in_the_dark);
- return message_out;
-}
-
-static int esp_do_msgindone(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
- int message_out = 0, it = 0, rval;
-
- rval = skipahead1(esp, eregs, SCptr, in_msgin, in_msgindone);
- if(rval)
- return rval;
- if(SCptr->SCp.sent_command != in_status) {
- if(!(esp->ireg & ESP_INTR_DC)) {
- if(esp->msgin_len && (esp->sreg & ESP_STAT_PERR)) {
- message_out = MSG_PARITY_ERROR;
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
- } else if((it = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES))!=1) {
- /* We certainly dropped the ball somewhere. */
- message_out = INITIATOR_ERROR;
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
- } else if(!esp->msgin_len) {
- it = esp_read(eregs->esp_fdata);
- esp_advance_phase(SCptr, in_msgincont);
- } else {
- /* it is ok and we want it */
- it = esp->cur_msgin[esp->msgin_ctr] =
- esp_read(eregs->esp_fdata);
- esp->msgin_ctr++;
- }
- } else {
- esp_advance_phase(SCptr, in_the_dark);
- return do_work_bus;
- }
- } else {
- it = esp->cur_msgin[0];
- }
- if(!message_out && esp->msgin_len) {
- if(esp->msgin_ctr < esp->msgin_len) {
- esp_advance_phase(SCptr, in_msgincont);
- } else if(esp->msgin_len == 1) {
- message_out = check_singlebyte_msg(esp, eregs);
- } else if(esp->msgin_len == 2) {
- if(esp->cur_msgin[0] == EXTENDED_MESSAGE) {
- if((it+2) >= 15) {
- message_out = MESSAGE_REJECT;
- } else {
- esp->msgin_len = (it + 2);
- esp_advance_phase(SCptr, in_msgincont);
- }
- } else {
- message_out = MESSAGE_REJECT; /* foo on you */
- }
- } else {
- message_out = check_multibyte_msg(esp, eregs);
- }
- }
- if(message_out < 0) {
- return -message_out;
- } else if(message_out) {
- if(((message_out != 1) &&
- ((message_out < 0x20) || (message_out & 0x80))))
- esp->msgout_len = 1;
- esp->cur_msgout[0] = message_out;
- esp_cmd(esp, eregs, ESP_CMD_SATN);
- esp_advance_phase(SCptr, in_the_dark);
- esp->msgin_len = 0;
- }
- esp->sreg = esp_read(eregs->esp_status);
- esp->sreg &= ~(ESP_STAT_INTR);
- if((esp->sreg & (ESP_STAT_PMSG|ESP_STAT_PCD)) == (ESP_STAT_PMSG|ESP_STAT_PCD))
- esp_cmd(esp, eregs, ESP_CMD_MOK);
- if((SCptr->SCp.sent_command == in_msgindone) &&
- (SCptr->SCp.phase == in_freeing))
- return esp_do_freebus(esp, eregs);
- return do_intr_end;
-}
-
-static int esp_do_cmdbegin(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- unsigned char tmp;
- Scsi_Cmnd *SCptr = esp->current_SC;
-
- esp_advance_phase(SCptr, in_cmdend);
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
- tmp = *esp->esp_scmdp++;
- esp->esp_scmdleft--;
- esp_write(eregs->esp_fdata, tmp);
- esp_cmd(esp, eregs, ESP_CMD_TI);
- return do_intr_end;
-}
-
-static int esp_do_cmddone(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- esp_cmd(esp, eregs, ESP_CMD_NULL);
- if(esp->ireg & ESP_INTR_BSERV) {
- esp_advance_phase(esp->current_SC, in_the_dark);
- return esp_do_phase_determine(esp, eregs);
- }
- ESPLOG(("esp%d: in do_cmddone() but didn't get BSERV interrupt.\n",
- esp->esp_id));
- return do_reset_bus;
-}
-
-static int esp_do_msgout(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
- switch(esp->msgout_len) {
- case 1:
- esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
- esp_cmd(esp, eregs, ESP_CMD_TI);
- break;
-
- case 2:
- if(esp->do_pio_cmds){
- esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
- esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
- esp_cmd(esp, eregs, ESP_CMD_TI);
- } else {
- esp->esp_command[0] = esp->cur_msgout[0];
- esp->esp_command[1] = esp->cur_msgout[1];
- esp->dma_setup(esp, esp->esp_command_dvma, 2, 0);
- esp_setcount(eregs, 2);
- esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
- }
- break;
-
- case 4:
- esp->snip = 1;
- if(esp->do_pio_cmds){
- esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
- esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
- esp_write(eregs->esp_fdata, esp->cur_msgout[2]);
- esp_write(eregs->esp_fdata, esp->cur_msgout[3]);
- esp_cmd(esp, eregs, ESP_CMD_TI);
- } else {
- esp->esp_command[0] = esp->cur_msgout[0];
- esp->esp_command[1] = esp->cur_msgout[1];
- esp->esp_command[2] = esp->cur_msgout[2];
- esp->esp_command[3] = esp->cur_msgout[3];
- esp->dma_setup(esp, esp->esp_command_dvma, 4, 0);
- esp_setcount(eregs, 4);
- esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
- }
- break;
-
- case 5:
- esp->snip = 1;
- if(esp->do_pio_cmds){
- esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
- esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
- esp_write(eregs->esp_fdata, esp->cur_msgout[2]);
- esp_write(eregs->esp_fdata, esp->cur_msgout[3]);
- esp_write(eregs->esp_fdata, esp->cur_msgout[4]);
- esp_cmd(esp, eregs, ESP_CMD_TI);
- } else {
- esp->esp_command[0] = esp->cur_msgout[0];
- esp->esp_command[1] = esp->cur_msgout[1];
- esp->esp_command[2] = esp->cur_msgout[2];
- esp->esp_command[3] = esp->cur_msgout[3];
- esp->esp_command[4] = esp->cur_msgout[4];
- esp->dma_setup(esp, esp->esp_command_dvma, 5, 0);
- esp_setcount(eregs, 5);
- esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
- }
- break;
-
- default:
- /* whoops */
- ESPMISC(("bogus msgout sending NOP\n"));
- esp->cur_msgout[0] = NOP;
- esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
- esp->msgout_len = 1;
- esp_cmd(esp, eregs, ESP_CMD_TI);
- break;
- }
- esp_advance_phase(esp->current_SC, in_msgoutdone);
- return do_intr_end;
-}
-
-static int esp_do_msgoutdone(struct NCR_ESP *esp,
- struct ESP_regs *eregs)
-{
- if((esp->msgout_len > 1) && esp->dma_barrier)
- esp->dma_barrier(esp);
-
- if(!(esp->ireg & ESP_INTR_DC)) {
- esp_cmd(esp, eregs, ESP_CMD_NULL);
- switch(esp->sreg & ESP_STAT_PMASK) {
- case ESP_MOP:
- /* whoops, parity error */
- ESPLOG(("esp%d: still in msgout, parity error assumed\n",
- esp->esp_id));
- if(esp->msgout_len > 1)
- esp_cmd(esp, eregs, ESP_CMD_SATN);
- esp_advance_phase(esp->current_SC, in_msgout);
- return do_work_bus;
-
- case ESP_DIP:
- break;
-
- default:
- if(!fcount(esp, eregs) &&
- !(((struct esp_device *)esp->current_SC->device->hostdata)->sync_max_offset))
- esp_cmd(esp, eregs, ESP_CMD_FLUSH);
- break;
-
- };
- }
-
- /* If we sent out a synchronous negotiation message, update
- * our state.
- */
- if(esp->cur_msgout[2] == EXTENDED_MESSAGE &&
- esp->cur_msgout[4] == EXTENDED_SDTR) {
- esp->snip = 1; /* anal retentiveness... */
- }
-
- esp->prevmsgout = esp->cur_msgout[0];
- esp->msgout_len = 0;
- esp_advance_phase(esp->current_SC, in_the_dark);
- return esp_do_phase_determine(esp, eregs);
-}
-
-static int esp_bus_unexpected(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- ESPLOG(("esp%d: command in weird state %2x\n",
- esp->esp_id, esp->current_SC->SCp.phase));
- return do_reset_bus;
-}
-
-static espfunc_t bus_vector[] = {
- esp_do_data_finale,
- esp_do_data_finale,
- esp_bus_unexpected,
- esp_do_msgin,
- esp_do_msgincont,
- esp_do_msgindone,
- esp_do_msgout,
- esp_do_msgoutdone,
- esp_do_cmdbegin,
- esp_do_cmddone,
- esp_do_status,
- esp_do_freebus,
- esp_do_phase_determine,
- esp_bus_unexpected,
- esp_bus_unexpected,
- esp_bus_unexpected,
-};
-
-/* This is the second tier in our dual-level SCSI state machine. */
-static int esp_work_bus(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
- Scsi_Cmnd *SCptr = esp->current_SC;
- unsigned int phase;
-
- ESPBUS(("esp_work_bus: "));
- if(!SCptr) {
- ESPBUS(("reconnect\n"));
- return esp_do_reconnect(esp, eregs);
- }
- phase = SCptr->SCp.phase;
- if ((phase & 0xf0) == in_phases_mask)
- return bus_vector[(phase & 0x0f)](esp, eregs);
- else if((phase & 0xf0) == in_slct_mask)
- return esp_select_complete(esp, eregs);
- else
- return esp_bus_unexpected(esp, eregs);
-}
-
-static espfunc_t isvc_vector[] = {
- NULL,
- esp_do_phase_determine,
- esp_do_resetbus,
- esp_finish_reset,
- esp_work_bus
-};
-
-/* Main interrupt handler for an esp adapter. */
-void esp_handle(struct NCR_ESP *esp)
-{
- struct ESP_regs *eregs;
- Scsi_Cmnd *SCptr;
- int what_next = do_intr_end;
- eregs = esp->eregs;
- SCptr = esp->current_SC;
-
- if(esp->dma_irq_entry)
- esp->dma_irq_entry(esp);
-
- /* Check for errors. */
- esp->sreg = esp_read(eregs->esp_status);
- esp->sreg &= (~ESP_STAT_INTR);
- esp->seqreg = (esp_read(eregs->esp_sstep) & ESP_STEP_VBITS);
- esp->ireg = esp_read(eregs->esp_intrpt); /* Unlatch intr and stat regs */
- ESPIRQ(("handle_irq: [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
- esp->sreg, esp->seqreg, esp->ireg));
- if(esp->sreg & (ESP_STAT_SPAM)) {
- /* Gross error, could be due to one of:
- *
- * - top of fifo overwritten, could be because
- * we tried to do a synchronous transfer with
- * an offset greater than ESP fifo size
- *
- * - top of command register overwritten
- *
- * - DMA setup to go in one direction, SCSI
- * bus points in the other, whoops
- *
- * - weird phase change during asynchronous
- * data phase while we are initiator
- */
- ESPLOG(("esp%d: Gross error sreg=%2x\n", esp->esp_id, esp->sreg));
-
- /* If a command is live on the bus we cannot safely
- * reset the bus, so we'll just let the pieces fall
- * where they may. Here we are hoping that the
- * target will be able to cleanly go away soon
- * so we can safely reset things.
- */
- if(!SCptr) {
- ESPLOG(("esp%d: No current cmd during gross error, "
- "resetting bus\n", esp->esp_id));
- what_next = do_reset_bus;
- goto state_machine;
- }
- }
-
- /* No current cmd is only valid at this point when there are
- * commands off the bus or we are trying a reset.
- */
- if(!SCptr && !esp->disconnected_SC && !(esp->ireg & ESP_INTR_SR)) {
- /* Panic is safe, since current_SC is null. */
- ESPLOG(("esp%d: no command in esp_handle()\n", esp->esp_id));
- panic("esp_handle: current_SC == penguin within interrupt!");
- }
-
- if(esp->ireg & (ESP_INTR_IC)) {
- /* Illegal command fed to ESP. Outside of obvious
- * software bugs that could cause this, there is
- * a condition with ESP100 where we can confuse the
- * ESP into an erroneous illegal command interrupt
- * because it does not scrape the FIFO properly
- * for reselection. See esp100_reconnect_hwbug()
- * to see how we try very hard to avoid this.
- */
- ESPLOG(("esp%d: invalid command\n", esp->esp_id));
-
- esp_dump_state(esp, eregs);
-
- if(SCptr) {
- /* Devices with very buggy firmware can drop BSY
- * during a scatter list interrupt when using sync
- * mode transfers. We continue the transfer as
- * expected, the target drops the bus, the ESP
- * gets confused, and we get a illegal command
- * interrupt because the bus is in the disconnected
- * state now and ESP_CMD_TI is only allowed when
- * a nexus is alive on the bus.
- */
- ESPLOG(("esp%d: Forcing async and disabling disconnect for "
- "target %d\n", esp->esp_id, SCptr->device->id));
- SCptr->device->borken = 1; /* foo on you */
- }
-
- what_next = do_reset_bus;
- } else if(!(esp->ireg & ~(ESP_INTR_FDONE | ESP_INTR_BSERV | ESP_INTR_DC))) {
- int phase;
-
- if(SCptr) {
- phase = SCptr->SCp.phase;
- if(phase & in_phases_mask) {
- what_next = esp_work_bus(esp, eregs);
- } else if(phase & in_slct_mask) {
- what_next = esp_select_complete(esp, eregs);
- } else {
- ESPLOG(("esp%d: interrupt for no good reason...\n",
- esp->esp_id));
- what_next = do_intr_end;
- }
- } else {
- ESPLOG(("esp%d: BSERV or FDONE or DC while SCptr==NULL\n",
- esp->esp_id));
- what_next = do_reset_bus;
- }
- } else if(esp->ireg & ESP_INTR_SR) {
- ESPLOG(("esp%d: SCSI bus reset interrupt\n", esp->esp_id));
- what_next = do_reset_complete;
- } else if(esp->ireg & (ESP_INTR_S | ESP_INTR_SATN)) {
- ESPLOG(("esp%d: AIEEE we have been selected by another initiator!\n",
- esp->esp_id));
- what_next = do_reset_bus;
- } else if(esp->ireg & ESP_INTR_RSEL) {
- if(!SCptr) {
- /* This is ok. */
- what_next = esp_do_reconnect(esp, eregs);
- } else if(SCptr->SCp.phase & in_slct_mask) {
- /* Only selection code knows how to clean
- * up properly.
- */
- ESPDISC(("Reselected during selection attempt\n"));
- what_next = esp_select_complete(esp, eregs);
- } else {
- ESPLOG(("esp%d: Reselected while bus is busy\n",
- esp->esp_id));
- what_next = do_reset_bus;
- }
- }
-
- /* This is tier-one in our dual level SCSI state machine. */
-state_machine:
- while(what_next != do_intr_end) {
- if (what_next >= do_phase_determine &&
- what_next < do_intr_end)
- what_next = isvc_vector[what_next](esp, eregs);
- else {
- /* state is completely lost ;-( */
- ESPLOG(("esp%d: interrupt engine loses state, resetting bus\n",
- esp->esp_id));
- what_next = do_reset_bus;
- }
- }
- if(esp->dma_irq_exit)
- esp->dma_irq_exit(esp);
-}
-EXPORT_SYMBOL(esp_handle);
-
-#ifndef CONFIG_SMP
-irqreturn_t esp_intr(int irq, void *dev_id)
-{
- struct NCR_ESP *esp;
- unsigned long flags;
- int again;
- struct Scsi_Host *dev = dev_id;
-
- /* Handle all ESP interrupts showing at this IRQ level. */
- spin_lock_irqsave(dev->host_lock, flags);
-repeat:
- again = 0;
- for_each_esp(esp) {
-#ifndef __mips__
- if(((esp)->irq & 0xff) == irq) {
-#endif
- if(esp->dma_irq_p(esp)) {
- again = 1;
-
- esp->dma_ints_off(esp);
-
- ESPIRQ(("I%d(", esp->esp_id));
- esp_handle(esp);
- ESPIRQ((")"));
-
- esp->dma_ints_on(esp);
- }
-#ifndef __mips__
- }
-#endif
- }
- if(again)
- goto repeat;
- spin_unlock_irqrestore(dev->host_lock, flags);
- return IRQ_HANDLED;
-}
-#else
-/* For SMP we only service one ESP on the list list at our IRQ level! */
-irqreturn_t esp_intr(int irq, void *dev_id)
-{
- struct NCR_ESP *esp;
- unsigned long flags;
- struct Scsi_Host *dev = dev_id;
-
- /* Handle all ESP interrupts showing at this IRQ level. */
- spin_lock_irqsave(dev->host_lock, flags);
- for_each_esp(esp) {
- if(((esp)->irq & 0xf) == irq) {
- if(esp->dma_irq_p(esp)) {
- esp->dma_ints_off(esp);
-
- ESPIRQ(("I[%d:%d](",
- smp_processor_id(), esp->esp_id));
- esp_handle(esp);
- ESPIRQ((")"));
-
- esp->dma_ints_on(esp);
- goto out;
- }
- }
- }
-out:
- spin_unlock_irqrestore(dev->host_lock, flags);
- return IRQ_HANDLED;
-}
-#endif
-
-int esp_slave_alloc(struct scsi_device *SDptr)
-{
- struct esp_device *esp_dev =
- kzalloc(sizeof(struct esp_device), GFP_ATOMIC);
-
- if (!esp_dev)
- return -ENOMEM;
- SDptr->hostdata = esp_dev;
- return 0;
-}
-
-void esp_slave_destroy(struct scsi_device *SDptr)
-{
- struct NCR_ESP *esp = (struct NCR_ESP *) SDptr->host->hostdata;
-
- esp->targets_present &= ~(1 << sdev_id(SDptr));
- kfree(SDptr->hostdata);
- SDptr->hostdata = NULL;
-}
-
-#ifdef MODULE
-int init_module(void) { return 0; }
-void cleanup_module(void) {}
-void esp_release(void)
-{
- esps_in_use--;
- esps_running = esps_in_use;
-}
-EXPORT_SYMBOL(esp_release);
-#endif
-
-EXPORT_SYMBOL(esp_abort);
-EXPORT_SYMBOL(esp_allocate);
-EXPORT_SYMBOL(esp_deallocate);
-EXPORT_SYMBOL(esp_initialize);
-EXPORT_SYMBOL(esp_intr);
-EXPORT_SYMBOL(esp_queue);
-EXPORT_SYMBOL(esp_reset);
-EXPORT_SYMBOL(esp_slave_alloc);
-EXPORT_SYMBOL(esp_slave_destroy);
-EXPORT_SYMBOL(esps_in_use);
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/NCR53C9x.h b/drivers/scsi/NCR53C9x.h
deleted file mode 100644
index d85cb73..0000000
--- a/drivers/scsi/NCR53C9x.h
+++ /dev/null
@@ -1,668 +0,0 @@
-/* NCR53C9x.c: Defines and structures for the NCR53C9x generic driver.
- *
- * Originaly esp.h: Defines and structures for the Sparc ESP
- * (Enhanced SCSI Processor) driver under Linux.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- *
- * Generalization by Jesper Skov (jskov@cygnus.co.uk)
- *
- * More generalization (for i386 stuff) by Tymm Twillman (tymm@computer.org)
- */
-
-#ifndef NCR53C9X_H
-#define NCR53C9X_H
-
-#include <linux/interrupt.h>
-
-/* djweis for mac driver */
-#if defined(CONFIG_MAC)
-#define PAD_SIZE 15
-#else
-#define PAD_SIZE 3
-#endif
-
-/* Handle multiple hostadapters on Amiga
- * generally PAD_SIZE = 3
- * but there is one exception: Oktagon (PAD_SIZE = 1) */
-#if defined(CONFIG_OKTAGON_SCSI) || defined(CONFIG_OKTAGON_SCSI_MODULE)
-#undef PAD_SIZE
-#if defined(CONFIG_BLZ1230_SCSI) || defined(CONFIG_BLZ1230_SCSI_MODULE) || \
- defined(CONFIG_BLZ2060_SCSI) || defined(CONFIG_BLZ2060_SCSI_MODULE) || \
- defined(CONFIG_CYBERSTORM_SCSI) || defined(CONFIG_CYBERSTORM_SCSI_MODULE) || \
- defined(CONFIG_CYBERSTORMII_SCSI) || defined(CONFIG_CYBERSTORMII_SCSI_MODULE) || \
- defined(CONFIG_FASTLANE_SCSI) || defined(CONFIG_FASTLANE_SCSI_MODULE)
-#define MULTIPLE_PAD_SIZES
-#else
-#define PAD_SIZE 1
-#endif
-#endif
-
-/* Macros for debugging messages */
-
-#define DEBUG_ESP
-/* #define DEBUG_ESP_DATA */
-/* #define DEBUG_ESP_QUEUE */
-/* #define DEBUG_ESP_DISCONNECT */
-/* #define DEBUG_ESP_STATUS */
-/* #define DEBUG_ESP_PHASES */
-/* #define DEBUG_ESP_WORKBUS */
-/* #define DEBUG_STATE_MACHINE */
-/* #define DEBUG_ESP_CMDS */
-/* #define DEBUG_ESP_IRQS */
-/* #define DEBUG_SDTR */
-/* #define DEBUG_ESP_SG */
-
-/* Use the following to sprinkle debugging messages in a way which
- * suits you if combinations of the above become too verbose when
- * trying to track down a specific problem.
- */
-/* #define DEBUG_ESP_MISC */
-
-#if defined(DEBUG_ESP)
-#define ESPLOG(foo) printk foo
-#else
-#define ESPLOG(foo)
-#endif /* (DEBUG_ESP) */
-
-#if defined(DEBUG_ESP_DATA)
-#define ESPDATA(foo) printk foo
-#else
-#define ESPDATA(foo)
-#endif
-
-#if defined(DEBUG_ESP_QUEUE)
-#define ESPQUEUE(foo) printk foo
-#else
-#define ESPQUEUE(foo)
-#endif
-
-#if defined(DEBUG_ESP_DISCONNECT)
-#define ESPDISC(foo) printk foo
-#else
-#define ESPDISC(foo)
-#endif
-
-#if defined(DEBUG_ESP_STATUS)
-#define ESPSTAT(foo) printk foo
-#else
-#define ESPSTAT(foo)
-#endif
-
-#if defined(DEBUG_ESP_PHASES)
-#define ESPPHASE(foo) printk foo
-#else
-#define ESPPHASE(foo)
-#endif
-
-#if defined(DEBUG_ESP_WORKBUS)
-#define ESPBUS(foo) printk foo
-#else
-#define ESPBUS(foo)
-#endif
-
-#if defined(DEBUG_ESP_IRQS)
-#define ESPIRQ(foo) printk foo
-#else
-#define ESPIRQ(foo)
-#endif
-
-#if defined(DEBUG_SDTR)
-#define ESPSDTR(foo) printk foo
-#else
-#define ESPSDTR(foo)
-#endif
-
-#if defined(DEBUG_ESP_MISC)
-#define ESPMISC(foo) printk foo
-#else
-#define ESPMISC(foo)
-#endif
-
-/*
- * padding for register structure
- */
-#ifdef CONFIG_JAZZ_ESP
-#define EREGS_PAD(n)
-#else
-#ifndef MULTIPLE_PAD_SIZES
-#define EREGS_PAD(n) unchar n[PAD_SIZE];
-#endif
-#endif
-
-/* The ESP SCSI controllers have their register sets in three
- * "classes":
- *
- * 1) Registers which are both read and write.
- * 2) Registers which are read only.
- * 3) Registers which are write only.
- *
- * Yet, they all live within the same IO space.
- */
-
-#if !defined(__i386__) && !defined(__x86_64__)
-
-#ifndef MULTIPLE_PAD_SIZES
-
-#ifdef CONFIG_CPU_HAS_WB
-#include <asm/wbflush.h>
-#define esp_write(__reg, __val) do{(__reg) = (__val); wbflush();} while(0)
-#else
-#define esp_write(__reg, __val) ((__reg) = (__val))
-#endif
-#define esp_read(__reg) (__reg)
-
-struct ESP_regs {
- /* Access Description Offset */
- volatile unchar esp_tclow; /* rw Low bits of the transfer count 0x00 */
- EREGS_PAD(tlpad1);
- volatile unchar esp_tcmed; /* rw Mid bits of the transfer count 0x04 */
- EREGS_PAD(fdpad);
- volatile unchar esp_fdata; /* rw FIFO data bits 0x08 */
- EREGS_PAD(cbpad);
- volatile unchar esp_cmnd; /* rw SCSI command bits 0x0c */
- EREGS_PAD(stpad);
- volatile unchar esp_status; /* ro ESP status register 0x10 */
-#define esp_busid esp_status /* wo Bus ID for select/reselect 0x10 */
- EREGS_PAD(irqpd);
- volatile unchar esp_intrpt; /* ro Kind of interrupt 0x14 */
-#define esp_timeo esp_intrpt /* wo Timeout value for select/resel 0x14 */
- EREGS_PAD(sspad);
- volatile unchar esp_sstep; /* ro Sequence step register 0x18 */
-#define esp_stp esp_sstep /* wo Transfer period per sync 0x18 */
- EREGS_PAD(ffpad);
- volatile unchar esp_fflags; /* ro Bits of current FIFO info 0x1c */
-#define esp_soff esp_fflags /* wo Sync offset 0x1c */
- EREGS_PAD(cf1pd);
- volatile unchar esp_cfg1; /* rw First configuration register 0x20 */
- EREGS_PAD(cfpad);
- volatile unchar esp_cfact; /* wo Clock conversion factor 0x24 */
- EREGS_PAD(ctpad);
- volatile unchar esp_ctest; /* wo Chip test register 0x28 */
- EREGS_PAD(cf2pd);
- volatile unchar esp_cfg2; /* rw Second configuration register 0x2c */
- EREGS_PAD(cf3pd);
-
- /* The following is only found on the 53C9X series SCSI chips */
- volatile unchar esp_cfg3; /* rw Third configuration register 0x30 */
- EREGS_PAD(cf4pd);
- volatile unchar esp_cfg4; /* rw Fourth configuration register 0x34 */
- EREGS_PAD(thpd);
- /* The following is found on all chips except the NCR53C90 (ESP100) */
- volatile unchar esp_tchi; /* rw High bits of transfer count 0x38 */
-#define esp_uid esp_tchi /* ro Unique ID code 0x38 */
- EREGS_PAD(fgpad);
- volatile unchar esp_fgrnd; /* rw Data base for fifo 0x3c */
-};
-
-#else /* MULTIPLE_PAD_SIZES */
-
-#define esp_write(__reg, __val) (*(__reg) = (__val))
-#define esp_read(__reg) (*(__reg))
-
-struct ESP_regs {
- unsigned char io_addr[64]; /* dummy */
- /* Access Description Offset */
-#define esp_tclow io_addr /* rw Low bits of the transfer count 0x00 */
-#define esp_tcmed io_addr + (1<<(esp->shift)) /* rw Mid bits of the transfer count 0x04 */
-#define esp_fdata io_addr + (2<<(esp->shift)) /* rw FIFO data bits 0x08 */
-#define esp_cmnd io_addr + (3<<(esp->shift)) /* rw SCSI command bits 0x0c */
-#define esp_status io_addr + (4<<(esp->shift)) /* ro ESP status register 0x10 */
-#define esp_busid esp_status /* wo Bus ID for select/reselect 0x10 */
-#define esp_intrpt io_addr + (5<<(esp->shift)) /* ro Kind of interrupt 0x14 */
-#define esp_timeo esp_intrpt /* wo Timeout value for select/resel 0x14 */
-#define esp_sstep io_addr + (6<<(esp->shift)) /* ro Sequence step register 0x18 */
-#define esp_stp esp_sstep /* wo Transfer period per sync 0x18 */
-#define esp_fflags io_addr + (7<<(esp->shift)) /* ro Bits of current FIFO info 0x1c */
-#define esp_soff esp_fflags /* wo Sync offset 0x1c */
-#define esp_cfg1 io_addr + (8<<(esp->shift)) /* rw First configuration register 0x20 */
-#define esp_cfact io_addr + (9<<(esp->shift)) /* wo Clock conversion factor 0x24 */
-#define esp_ctest io_addr + (10<<(esp->shift)) /* wo Chip test register 0x28 */
-#define esp_cfg2 io_addr + (11<<(esp->shift)) /* rw Second configuration register 0x2c */
-
- /* The following is only found on the 53C9X series SCSI chips */
-#define esp_cfg3 io_addr + (12<<(esp->shift)) /* rw Third configuration register 0x30 */
-#define esp_cfg4 io_addr + (13<<(esp->shift)) /* rw Fourth configuration register 0x34 */
-
- /* The following is found on all chips except the NCR53C90 (ESP100) */
-#define esp_tchi io_addr + (14<<(esp->shift)) /* rw High bits of transfer count 0x38 */
-#define esp_uid esp_tchi /* ro Unique ID code 0x38 */
-#define esp_fgrnd io_addr + (15<<(esp->shift)) /* rw Data base for fifo 0x3c */
-};
-
-#endif
-
-#else /* !defined(__i386__) && !defined(__x86_64__) */
-
-#define esp_write(__reg, __val) outb((__val), (__reg))
-#define esp_read(__reg) inb((__reg))
-
-struct ESP_regs {
- unsigned int io_addr;
- /* Access Description Offset */
-#define esp_tclow io_addr /* rw Low bits of the transfer count 0x00 */
-#define esp_tcmed io_addr + 1 /* rw Mid bits of the transfer count 0x04 */
-#define esp_fdata io_addr + 2 /* rw FIFO data bits 0x08 */
-#define esp_cmnd io_addr + 3 /* rw SCSI command bits 0x0c */
-#define esp_status io_addr + 4 /* ro ESP status register 0x10 */
-#define esp_busid esp_status /* wo Bus ID for select/reselect 0x10 */
-#define esp_intrpt io_addr + 5 /* ro Kind of interrupt 0x14 */
-#define esp_timeo esp_intrpt /* wo Timeout value for select/resel 0x14 */
-#define esp_sstep io_addr + 6 /* ro Sequence step register 0x18 */
-#define esp_stp esp_sstep /* wo Transfer period per sync 0x18 */
-#define esp_fflags io_addr + 7 /* ro Bits of current FIFO info 0x1c */
-#define esp_soff esp_fflags /* wo Sync offset 0x1c */
-#define esp_cfg1 io_addr + 8 /* rw First configuration register 0x20 */
-#define esp_cfact io_addr + 9 /* wo Clock conversion factor 0x24 */
-#define esp_ctest io_addr + 10 /* wo Chip test register 0x28 */
-#define esp_cfg2 io_addr + 11 /* rw Second configuration register 0x2c */
-
- /* The following is only found on the 53C9X series SCSI chips */
-#define esp_cfg3 io_addr + 12 /* rw Third configuration register 0x30 */
-#define esp_cfg4 io_addr + 13 /* rw Fourth configuration register 0x34 */
-
- /* The following is found on all chips except the NCR53C90 (ESP100) */
-#define esp_tchi io_addr + 14 /* rw High bits of transfer count 0x38 */
-#define esp_uid esp_tchi /* ro Unique ID code 0x38 */
-#define esp_fgrnd io_addr + 15 /* rw Data base for fifo 0x3c */
-};
-
-#endif /* !defined(__i386__) && !defined(__x86_64__) */
-
-/* Various revisions of the ESP board. */
-enum esp_rev {
- esp100 = 0x00, /* NCR53C90 - very broken */
- esp100a = 0x01, /* NCR53C90A */
- esp236 = 0x02,
- fas236 = 0x03,
- fas100a = 0x04,
- fast = 0x05,
- fas366 = 0x06,
- fas216 = 0x07,
- fsc = 0x08, /* SYM53C94-2 */
- espunknown = 0x09
-};
-
-/* We allocate one of these for each scsi device and attach it to
- * SDptr->hostdata for use in the driver
- */
-struct esp_device {
- unsigned char sync_min_period;
- unsigned char sync_max_offset;
- unsigned sync:1;
- unsigned wide:1;
- unsigned disconnect:1;
-};
-
-/* We get one of these for each ESP probed. */
-struct NCR_ESP {
- struct NCR_ESP *next; /* Next ESP on probed or NULL */
- struct ESP_regs *eregs; /* All esp registers */
- int dma; /* Who I do transfers with. */
- void *dregs; /* And his registers. */
- struct Scsi_Host *ehost; /* Backpointer to SCSI Host */
-
- void *edev; /* Pointer to controller base/SBus */
- int esp_id; /* Unique per-ESP ID number */
-
- /* ESP Configuration Registers */
- unsigned char config1; /* Copy of the 1st config register */
- unsigned char config2; /* Copy of the 2nd config register */
- unsigned char config3[16]; /* Copy of the 3rd config register */
-
- /* The current command we are sending to the ESP chip. This esp_command
- * ptr needs to be mapped in DVMA area so we can send commands and read
- * from the ESP fifo without burning precious CPU cycles. Programmed I/O
- * sucks when we have the DVMA to do it for us. The ESP is stupid and will
- * only send out 6, 10, and 12 byte SCSI commands, others we need to send
- * one byte at a time. esp_slowcmd being set says that we are doing one
- * of the command types ESP doesn't understand, esp_scmdp keeps track of
- * which byte we are sending, esp_scmdleft says how many bytes to go.
- */
- volatile unchar *esp_command; /* Location of command (CPU view) */
- __u32 esp_command_dvma; /* Location of command (DVMA view) */
- unsigned char esp_clen; /* Length of this command */
- unsigned char esp_slowcmd;
- unsigned char *esp_scmdp;
- unsigned char esp_scmdleft;
-
- /* The following are used to determine the cause of an IRQ. Upon every
- * IRQ entry we synchronize these with the hardware registers.
- */
- unchar ireg; /* Copy of ESP interrupt register */
- unchar sreg; /* Same for ESP status register */
- unchar seqreg; /* The ESP sequence register */
-
- /* The following is set when a premature interrupt condition is detected
- * in some FAS revisions.
- */
- unchar fas_premature_intr_workaround;
-
- /* To save register writes to the ESP, which can be expensive, we
- * keep track of the previous value that various registers had for
- * the last target we connected to. If they are the same for the
- * current target, we skip the register writes as they are not needed.
- */
- unchar prev_soff, prev_stp, prev_cfg3;
-
- /* For each target we keep track of save/restore data
- * pointer information. This needs to be updated majorly
- * when we add support for tagged queueing. -DaveM
- */
- struct esp_pointers {
- char *saved_ptr;
- struct scatterlist *saved_buffer;
- int saved_this_residual;
- int saved_buffers_residual;
- } data_pointers[16] /*XXX [MAX_TAGS_PER_TARGET]*/;
-
- /* Clock periods, frequencies, synchronization, etc. */
- unsigned int cfreq; /* Clock frequency in HZ */
- unsigned int cfact; /* Clock conversion factor */
- unsigned int ccycle; /* One ESP clock cycle */
- unsigned int ctick; /* One ESP clock time */
- unsigned int radelay; /* FAST chip req/ack delay */
- unsigned int neg_defp; /* Default negotiation period */
- unsigned int sync_defp; /* Default sync transfer period */
- unsigned int max_period; /* longest our period can be */
- unsigned int min_period; /* shortest period we can withstand */
- /* For slow to medium speed input clock rates we shoot for 5mb/s,
- * but for high input clock rates we try to do 10mb/s although I
- * don't think a transfer can even run that fast with an ESP even
- * with DMA2 scatter gather pipelining.
- */
-#define SYNC_DEFP_SLOW 0x32 /* 5mb/s */
-#define SYNC_DEFP_FAST 0x19 /* 10mb/s */
-
- unsigned int snip; /* Sync. negotiation in progress */
- unsigned int wnip; /* WIDE negotiation in progress */
- unsigned int targets_present; /* targets spoken to before */
-
- int current_transfer_size; /* Set at beginning of data dma */
-
- unchar espcmdlog[32]; /* Log of current esp cmds sent. */
- unchar espcmdent; /* Current entry in esp cmd log. */
-
- /* Misc. info about this ESP */
- enum esp_rev erev; /* ESP revision */
- int irq; /* IRQ for this ESP */
- int scsi_id; /* Who am I as initiator? */
- int scsi_id_mask; /* Bitmask of 'me'. */
- int diff; /* Differential SCSI bus? */
- int slot; /* Slot the adapter occupies */
-
- /* Our command queues, only one cmd lives in the current_SC queue. */
- Scsi_Cmnd *issue_SC; /* Commands to be issued */
- Scsi_Cmnd *current_SC; /* Who is currently working the bus */
- Scsi_Cmnd *disconnected_SC; /* Commands disconnected from the bus */
-
- /* Message goo */
- unchar cur_msgout[16];
- unchar cur_msgin[16];
- unchar prevmsgout, prevmsgin;
- unchar msgout_len, msgin_len;
- unchar msgout_ctr, msgin_ctr;
-
- /* States that we cannot keep in the per cmd structure because they
- * cannot be assosciated with any specific command.
- */
- unchar resetting_bus;
- wait_queue_head_t reset_queue;
-
- unchar do_pio_cmds; /* Do command transfer with pio */
-
- /* How much bits do we have to shift the registers */
- unsigned char shift;
-
- /* Functions handling DMA
- */
- /* Required functions */
- int (*dma_bytes_sent)(struct NCR_ESP *, int);
- int (*dma_can_transfer)(struct NCR_ESP *, Scsi_Cmnd *);
- void (*dma_dump_state)(struct NCR_ESP *);
- void (*dma_init_read)(struct NCR_ESP *, __u32, int);
- void (*dma_init_write)(struct NCR_ESP *, __u32, int);
- void (*dma_ints_off)(struct NCR_ESP *);
- void (*dma_ints_on)(struct NCR_ESP *);
- int (*dma_irq_p)(struct NCR_ESP *);
- int (*dma_ports_p)(struct NCR_ESP *);
- void (*dma_setup)(struct NCR_ESP *, __u32, int, int);
-
- /* Optional functions (i.e. may be initialized to 0) */
- void (*dma_barrier)(struct NCR_ESP *);
- void (*dma_drain)(struct NCR_ESP *);
- void (*dma_invalidate)(struct NCR_ESP *);
- void (*dma_irq_entry)(struct NCR_ESP *);
- void (*dma_irq_exit)(struct NCR_ESP *);
- void (*dma_led_off)(struct NCR_ESP *);
- void (*dma_led_on)(struct NCR_ESP *);
- void (*dma_poll)(struct NCR_ESP *, unsigned char *);
- void (*dma_reset)(struct NCR_ESP *);
-
- /* Optional virtual DMA functions */
- void (*dma_mmu_get_scsi_one)(struct NCR_ESP *, Scsi_Cmnd *);
- void (*dma_mmu_get_scsi_sgl)(struct NCR_ESP *, Scsi_Cmnd *);
- void (*dma_mmu_release_scsi_one)(struct NCR_ESP *, Scsi_Cmnd *);
- void (*dma_mmu_release_scsi_sgl)(struct NCR_ESP *, Scsi_Cmnd *);
- void (*dma_advance_sg)(Scsi_Cmnd *);
-};
-
-/* Bitfield meanings for the above registers. */
-
-/* ESP config reg 1, read-write, found on all ESP chips */
-#define ESP_CONFIG1_ID 0x07 /* My BUS ID bits */
-#define ESP_CONFIG1_CHTEST 0x08 /* Enable ESP chip tests */
-#define ESP_CONFIG1_PENABLE 0x10 /* Enable parity checks */
-#define ESP_CONFIG1_PARTEST 0x20 /* Parity test mode enabled? */
-#define ESP_CONFIG1_SRRDISAB 0x40 /* Disable SCSI reset reports */
-#define ESP_CONFIG1_SLCABLE 0x80 /* Enable slow cable mode */
-
-/* ESP config reg 2, read-write, found only on esp100a+esp200+esp236+fsc chips */
-#define ESP_CONFIG2_DMAPARITY 0x01 /* enable DMA Parity (200,236,fsc) */
-#define ESP_CONFIG2_REGPARITY 0x02 /* enable reg Parity (200,236,fsc) */
-#define ESP_CONFIG2_BADPARITY 0x04 /* Bad parity target abort */
-#define ESP_CONFIG2_SCSI2ENAB 0x08 /* Enable SCSI-2 features (tmode only) */
-#define ESP_CONFIG2_HI 0x10 /* High Impedance DREQ ??? */
-#define ESP_CONFIG2_HMEFENAB 0x10 /* HME features enable */
-#define ESP_CONFIG2_BCM 0x20 /* Enable byte-ctrl (236,fsc) */
-#define ESP_CONFIG2_FENAB 0x40 /* Enable features (fas100,esp216,fsc) */
-#define ESP_CONFIG2_SPL 0x40 /* Enable status-phase latch (esp236) */
-#define ESP_CONFIG2_RFB 0x80 /* Reserve FIFO byte (fsc) */
-#define ESP_CONFIG2_MAGIC 0xe0 /* Invalid bits... */
-
-/* ESP config register 3 read-write, found only esp236+fas236+fas100a+fsc chips */
-#define ESP_CONFIG3_FCLOCK 0x01 /* FAST SCSI clock rate (esp100a/fas366) */
-#define ESP_CONFIG3_TEM 0x01 /* Enable thresh-8 mode (esp/fas236/fsc) */
-#define ESP_CONFIG3_FAST 0x02 /* Enable FAST SCSI (esp100a) */
-#define ESP_CONFIG3_ADMA 0x02 /* Enable alternate-dma (esp/fas236/fsc) */
-#define ESP_CONFIG3_TENB 0x04 /* group2 SCSI2 support (esp100a) */
-#define ESP_CONFIG3_SRB 0x04 /* Save residual byte (esp/fas236/fsc) */
-#define ESP_CONFIG3_TMS 0x08 /* Three-byte msg's ok (esp100a) */
-#define ESP_CONFIG3_FCLK 0x08 /* Fast SCSI clock rate (esp/fas236/fsc) */
-#define ESP_CONFIG3_IDMSG 0x10 /* ID message checking (esp100a) */
-#define ESP_CONFIG3_FSCSI 0x10 /* Enable FAST SCSI (esp/fas236/fsc) */
-#define ESP_CONFIG3_GTM 0x20 /* group2 SCSI2 support (esp/fas236/fsc) */
-#define ESP_CONFIG3_TBMS 0x40 /* Three-byte msg's ok (esp/fas236/fsc) */
-#define ESP_CONFIG3_IMS 0x80 /* ID msg chk'ng (esp/fas236/fsc) */
-
-/* ESP config register 4 read-write, found only on fsc chips */
-#define ESP_CONFIG4_BBTE 0x01 /* Back-to-Back transfer enable */
-#define ESP_CONFIG4_TEST 0x02 /* Transfer counter test mode */
-#define ESP_CONFIG4_EAN 0x04 /* Enable Active Negotiation */
-
-/* ESP command register read-write */
-/* Group 1 commands: These may be sent at any point in time to the ESP
- * chip. None of them can generate interrupts 'cept
- * the "SCSI bus reset" command if you have not disabled
- * SCSI reset interrupts in the config1 ESP register.
- */
-#define ESP_CMD_NULL 0x00 /* Null command, ie. a nop */
-#define ESP_CMD_FLUSH 0x01 /* FIFO Flush */
-#define ESP_CMD_RC 0x02 /* Chip reset */
-#define ESP_CMD_RS 0x03 /* SCSI bus reset */
-
-/* Group 2 commands: ESP must be an initiator and connected to a target
- * for these commands to work.
- */
-#define ESP_CMD_TI 0x10 /* Transfer Information */
-#define ESP_CMD_ICCSEQ 0x11 /* Initiator cmd complete sequence */
-#define ESP_CMD_MOK 0x12 /* Message okie-dokie */
-#define ESP_CMD_TPAD 0x18 /* Transfer Pad */
-#define ESP_CMD_SATN 0x1a /* Set ATN */
-#define ESP_CMD_RATN 0x1b /* De-assert ATN */
-
-/* Group 3 commands: ESP must be in the MSGOUT or MSGIN state and be connected
- * to a target as the initiator for these commands to work.
- */
-#define ESP_CMD_SMSG 0x20 /* Send message */
-#define ESP_CMD_SSTAT 0x21 /* Send status */
-#define ESP_CMD_SDATA 0x22 /* Send data */
-#define ESP_CMD_DSEQ 0x23 /* Discontinue Sequence */
-#define ESP_CMD_TSEQ 0x24 /* Terminate Sequence */
-#define ESP_CMD_TCCSEQ 0x25 /* Target cmd cmplt sequence */
-#define ESP_CMD_DCNCT 0x27 /* Disconnect */
-#define ESP_CMD_RMSG 0x28 /* Receive Message */
-#define ESP_CMD_RCMD 0x29 /* Receive Command */
-#define ESP_CMD_RDATA 0x2a /* Receive Data */
-#define ESP_CMD_RCSEQ 0x2b /* Receive cmd sequence */
-
-/* Group 4 commands: The ESP must be in the disconnected state and must
- * not be connected to any targets as initiator for
- * these commands to work.
- */
-#define ESP_CMD_RSEL 0x40 /* Reselect */
-#define ESP_CMD_SEL 0x41 /* Select w/o ATN */
-#define ESP_CMD_SELA 0x42 /* Select w/ATN */
-#define ESP_CMD_SELAS 0x43 /* Select w/ATN & STOP */
-#define ESP_CMD_ESEL 0x44 /* Enable selection */
-#define ESP_CMD_DSEL 0x45 /* Disable selections */
-#define ESP_CMD_SA3 0x46 /* Select w/ATN3 */
-#define ESP_CMD_RSEL3 0x47 /* Reselect3 */
-
-/* This bit enables the ESP's DMA */
-#define ESP_CMD_DMA 0x80 /* Do DMA? */
-
-/* ESP status register read-only */
-#define ESP_STAT_PIO 0x01 /* IO phase bit */
-#define ESP_STAT_PCD 0x02 /* CD phase bit */
-#define ESP_STAT_PMSG 0x04 /* MSG phase bit */
-#define ESP_STAT_PMASK 0x07 /* Mask of phase bits */
-#define ESP_STAT_TDONE 0x08 /* Transfer Completed */
-#define ESP_STAT_TCNT 0x10 /* Transfer Counter Is Zero */
-#define ESP_STAT_PERR 0x20 /* Parity error */
-#define ESP_STAT_SPAM 0x40 /* Real bad error */
-/* This indicates the 'interrupt pending' condition, it is a reserved
- * bit on old revs of the ESP (ESP100, ESP100A, FAS100A).
- */
-#define ESP_STAT_INTR 0x80 /* Interrupt */
-
-/* The status register can be masked with ESP_STAT_PMASK and compared
- * with the following values to determine the current phase the ESP
- * (at least thinks it) is in. For our purposes we also add our own
- * software 'done' bit for our phase management engine.
- */
-#define ESP_DOP (0) /* Data Out */
-#define ESP_DIP (ESP_STAT_PIO) /* Data In */
-#define ESP_CMDP (ESP_STAT_PCD) /* Command */
-#define ESP_STATP (ESP_STAT_PCD|ESP_STAT_PIO) /* Status */
-#define ESP_MOP (ESP_STAT_PMSG|ESP_STAT_PCD) /* Message Out */
-#define ESP_MIP (ESP_STAT_PMSG|ESP_STAT_PCD|ESP_STAT_PIO) /* Message In */
-
-/* ESP interrupt register read-only */
-#define ESP_INTR_S 0x01 /* Select w/o ATN */
-#define ESP_INTR_SATN 0x02 /* Select w/ATN */
-#define ESP_INTR_RSEL 0x04 /* Reselected */
-#define ESP_INTR_FDONE 0x08 /* Function done */
-#define ESP_INTR_BSERV 0x10 /* Bus service */
-#define ESP_INTR_DC 0x20 /* Disconnect */
-#define ESP_INTR_IC 0x40 /* Illegal command given */
-#define ESP_INTR_SR 0x80 /* SCSI bus reset detected */
-
-/* Interrupt status macros */
-#define ESP_SRESET_IRQ(esp) ((esp)->intreg & (ESP_INTR_SR))
-#define ESP_ILLCMD_IRQ(esp) ((esp)->intreg & (ESP_INTR_IC))
-#define ESP_SELECT_WITH_ATN_IRQ(esp) ((esp)->intreg & (ESP_INTR_SATN))
-#define ESP_SELECT_WITHOUT_ATN_IRQ(esp) ((esp)->intreg & (ESP_INTR_S))
-#define ESP_SELECTION_IRQ(esp) ((ESP_SELECT_WITH_ATN_IRQ(esp)) || \
- (ESP_SELECT_WITHOUT_ATN_IRQ(esp)))
-#define ESP_RESELECTION_IRQ(esp) ((esp)->intreg & (ESP_INTR_RSEL))
-
-/* ESP sequence step register read-only */
-#define ESP_STEP_VBITS 0x07 /* Valid bits */
-#define ESP_STEP_ASEL 0x00 /* Selection&Arbitrate cmplt */
-#define ESP_STEP_SID 0x01 /* One msg byte sent */
-#define ESP_STEP_NCMD 0x02 /* Was not in command phase */
-#define ESP_STEP_PPC 0x03 /* Early phase chg caused cmnd
- * bytes to be lost
- */
-#define ESP_STEP_FINI4 0x04 /* Command was sent ok */
-
-/* Ho hum, some ESP's set the step register to this as well... */
-#define ESP_STEP_FINI5 0x05
-#define ESP_STEP_FINI6 0x06
-#define ESP_STEP_FINI7 0x07
-#define ESP_STEP_SOM 0x08 /* Synchronous Offset Max */
-
-/* ESP chip-test register read-write */
-#define ESP_TEST_TARG 0x01 /* Target test mode */
-#define ESP_TEST_INI 0x02 /* Initiator test mode */
-#define ESP_TEST_TS 0x04 /* Tristate test mode */
-
-/* ESP unique ID register read-only, found on fas236+fas100a+fsc only */
-#define ESP_UID_F100A 0x00 /* FAS100A */
-#define ESP_UID_F236 0x02 /* FAS236 */
-#define ESP_UID_FSC 0xa2 /* NCR53CF9x-2 */
-#define ESP_UID_REV 0x07 /* ESP revision */
-#define ESP_UID_FAM 0xf8 /* ESP family */
-
-/* ESP fifo flags register read-only */
-/* Note that the following implies a 16 byte FIFO on the ESP. */
-#define ESP_FF_FBYTES 0x1f /* Num bytes in FIFO */
-#define ESP_FF_ONOTZERO 0x20 /* offset ctr not zero (esp100,fsc) */
-#define ESP_FF_SSTEP 0xe0 /* Sequence step */
-
-/* ESP clock conversion factor register write-only */
-#define ESP_CCF_F0 0x00 /* 35.01MHz - 40MHz */
-#define ESP_CCF_NEVER 0x01 /* Set it to this and die */
-#define ESP_CCF_F2 0x02 /* 10MHz */
-#define ESP_CCF_F3 0x03 /* 10.01MHz - 15MHz */
-#define ESP_CCF_F4 0x04 /* 15.01MHz - 20MHz */
-#define ESP_CCF_F5 0x05 /* 20.01MHz - 25MHz */
-#define ESP_CCF_F6 0x06 /* 25.01MHz - 30MHz */
-#define ESP_CCF_F7 0x07 /* 30.01MHz - 35MHz */
-
-#define ESP_BUS_TIMEOUT 275 /* In milli-seconds */
-#define ESP_TIMEO_CONST 8192
-#define FSC_TIMEO_CONST 7668
-#define ESP_NEG_DEFP(mhz, cfact) \
- ((ESP_BUS_TIMEOUT * ((mhz) / 1000)) / (8192 * (cfact)))
-#define FSC_NEG_DEFP(mhz, cfact) \
- ((ESP_BUS_TIMEOUT * ((mhz) / 1000)) / (7668 * (cfact)))
-#define ESP_MHZ_TO_CYCLE(mhertz) ((1000000000) / ((mhertz) / 1000))
-#define ESP_TICK(ccf, cycle) ((7682 * (ccf) * (cycle) / 1000))
-
-
-/* UGLY, UGLY, UGLY! */
-extern int nesps, esps_in_use, esps_running;
-
-/* For our interrupt engine. */
-#define for_each_esp(esp) \
- for((esp) = espchain; (esp); (esp) = (esp)->next)
-
-
-/* External functions */
-extern void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs);
-extern struct NCR_ESP *esp_allocate(struct scsi_host_template *, void *, int);
-extern void esp_deallocate(struct NCR_ESP *);
-extern void esp_release(void);
-extern void esp_initialize(struct NCR_ESP *);
-extern irqreturn_t esp_intr(int, void *);
-extern const char *esp_info(struct Scsi_Host *);
-extern int esp_queue(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
-extern int esp_abort(Scsi_Cmnd *);
-extern int esp_reset(Scsi_Cmnd *);
-extern int esp_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, int length,
- int inout);
-extern int esp_slave_alloc(struct scsi_device *);
-extern void esp_slave_destroy(struct scsi_device *);
-#endif /* !(NCR53C9X_H) */
diff --git a/drivers/scsi/blz1230.c b/drivers/scsi/blz1230.c
deleted file mode 100644
index 23f7c24..0000000
--- a/drivers/scsi/blz1230.c
+++ /dev/null
@@ -1,353 +0,0 @@
-/* blz1230.c: Driver for Blizzard 1230 SCSI IV Controller.
- *
- * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
- *
- * This driver is based on the CyberStorm driver, hence the occasional
- * reference to CyberStorm.
- */
-
-/* TODO:
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- * to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- * routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-#define MKIV 1
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define BLZ1230_ESP_ADDR 0x8000
-#define BLZ1230_DMA_ADDR 0x10000
-#define BLZ1230II_ESP_ADDR 0x10000
-#define BLZ1230II_DMA_ADDR 0x10021
-
-
-/* The Blizzard 1230 DMA interface
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * Only two things can be programmed in the Blizzard DMA:
- * 1) The data direction is controlled by the status of bit 31 (1 = write)
- * 2) The source/dest address (word aligned, shifted one right) in bits 30-0
- *
- * Program DMA by first latching the highest byte of the address/direction
- * (i.e. bits 31-24 of the long word constructed as described in steps 1+2
- * above). Then write each byte of the address/direction (starting with the
- * top byte, working down) to the DMA address register.
- *
- * Figure out interrupt status by reading the ESP status byte.
- */
-struct blz1230_dma_registers {
- volatile unsigned char dma_addr; /* DMA address [0x0000] */
- unsigned char dmapad2[0x7fff];
- volatile unsigned char dma_latch; /* DMA latch [0x8000] */
-};
-
-struct blz1230II_dma_registers {
- volatile unsigned char dma_addr; /* DMA address [0x0000] */
- unsigned char dmapad2[0xf];
- volatile unsigned char dma_latch; /* DMA latch [0x0010] */
-};
-
-#define BLZ1230_DMA_WRITE 0x80000000
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int dma_irq_p(struct NCR_ESP *esp);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static volatile unsigned char cmd_buffer[16];
- /* This is where all commands are put
- * before they are transferred to the ESP chip
- * via PIO.
- */
-
-/***************************************************************** Detection */
-int __init blz1230_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- struct zorro_dev *z = NULL;
- unsigned long address;
- struct ESP_regs *eregs;
- unsigned long board;
-
-#if MKIV
-#define REAL_BLZ1230_ID ZORRO_PROD_PHASE5_BLIZZARD_1230_IV_1260
-#define REAL_BLZ1230_ESP_ADDR BLZ1230_ESP_ADDR
-#define REAL_BLZ1230_DMA_ADDR BLZ1230_DMA_ADDR
-#else
-#define REAL_BLZ1230_ID ZORRO_PROD_PHASE5_BLIZZARD_1230_II_FASTLANE_Z3_CYBERSCSI_CYBERSTORM060
-#define REAL_BLZ1230_ESP_ADDR BLZ1230II_ESP_ADDR
-#define REAL_BLZ1230_DMA_ADDR BLZ1230II_DMA_ADDR
-#endif
-
- if ((z = zorro_find_device(REAL_BLZ1230_ID, z))) {
- board = z->resource.start;
- if (request_mem_region(board+REAL_BLZ1230_ESP_ADDR,
- sizeof(struct ESP_regs), "NCR53C9x")) {
- /* Do some magic to figure out if the blizzard is
- * equipped with a SCSI controller
- */
- address = ZTWO_VADDR(board);
- eregs = (struct ESP_regs *)(address + REAL_BLZ1230_ESP_ADDR);
- esp = esp_allocate(tpnt, (void *)board + REAL_BLZ1230_ESP_ADDR,
- 0);
-
- esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
- udelay(5);
- if(esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7))
- goto err_out;
-
- /* Do command transfer with programmed I/O */
- esp->do_pio_cmds = 1;
-
- /* Required functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
- esp->dma_barrier = 0;
- esp->dma_drain = 0;
- esp->dma_invalidate = 0;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = 0;
- esp->dma_led_on = 0;
- esp->dma_led_off = 0;
- esp->dma_poll = 0;
- esp->dma_reset = 0;
-
- /* SCSI chip speed */
- esp->cfreq = 40000000;
-
- /* The DMA registers on the Blizzard are mapped
- * relative to the device (i.e. in the same Zorro
- * I/O block).
- */
- esp->dregs = (void *)(address + REAL_BLZ1230_DMA_ADDR);
-
- /* ESP register base */
- esp->eregs = eregs;
-
- /* Set the command buffer */
- esp->esp_command = cmd_buffer;
- esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
- esp->irq = IRQ_AMIGA_PORTS;
- esp->slot = board+REAL_BLZ1230_ESP_ADDR;
- if (request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
- "Blizzard 1230 SCSI IV", esp->ehost))
- goto err_out;
-
- /* Figure out our scsi ID on the bus */
- esp->scsi_id = 7;
-
- /* We don't have a differential SCSI-bus. */
- esp->diff = 0;
-
- esp_initialize(esp);
-
- printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
- esps_running = esps_in_use;
- return esps_in_use;
- }
- }
- return 0;
-
- err_out:
- scsi_unregister(esp->ehost);
- esp_deallocate(esp);
- release_mem_region(board+REAL_BLZ1230_ESP_ADDR,
- sizeof(struct ESP_regs));
- return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- /* Since the Blizzard DMA is fully dedicated to the ESP chip,
- * the number of bytes sent (to the ESP chip) equals the number
- * of bytes in the FIFO - there is no buffering in the DMA controller.
- * XXXX Do I read this right? It is from host to ESP, right?
- */
- return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- /* I don't think there's any limit on the Blizzard DMA. So we use what
- * the ESP chip can handle (24 bit).
- */
- unsigned long sz = sp->SCp.this_residual;
- if(sz > 0x1000000)
- sz = 0x1000000;
- return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
- ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
- amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
-#if MKIV
- struct blz1230_dma_registers *dregs =
- (struct blz1230_dma_registers *) (esp->dregs);
-#else
- struct blz1230II_dma_registers *dregs =
- (struct blz1230II_dma_registers *) (esp->dregs);
-#endif
-
- cache_clear(addr, length);
-
- addr >>= 1;
- addr &= ~(BLZ1230_DMA_WRITE);
-
- /* First set latch */
- dregs->dma_latch = (addr >> 24) & 0xff;
-
- /* Then pump the address to the DMA address register */
-#if MKIV
- dregs->dma_addr = (addr >> 24) & 0xff;
-#endif
- dregs->dma_addr = (addr >> 16) & 0xff;
- dregs->dma_addr = (addr >> 8) & 0xff;
- dregs->dma_addr = (addr ) & 0xff;
-}
-
-void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
-#if MKIV
- struct blz1230_dma_registers *dregs =
- (struct blz1230_dma_registers *) (esp->dregs);
-#else
- struct blz1230II_dma_registers *dregs =
- (struct blz1230II_dma_registers *) (esp->dregs);
-#endif
-
- cache_push(addr, length);
-
- addr >>= 1;
- addr |= BLZ1230_DMA_WRITE;
-
- /* First set latch */
- dregs->dma_latch = (addr >> 24) & 0xff;
-
- /* Then pump the address to the DMA address register */
-#if MKIV
- dregs->dma_addr = (addr >> 24) & 0xff;
-#endif
- dregs->dma_addr = (addr >> 16) & 0xff;
- dregs->dma_addr = (addr >> 8) & 0xff;
- dregs->dma_addr = (addr ) & 0xff;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR);
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
- /* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
- * so when (write) is true, it actually means READ!
- */
- if(write){
- dma_init_read(esp, addr, count);
- } else {
- dma_init_write(esp, addr, count);
- }
-}
-
-#define HOSTS_C
-
-int blz1230_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
- unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
- esp_deallocate((struct NCR_ESP *)instance->hostdata);
- esp_release();
- release_mem_region(address, sizeof(struct ESP_regs));
- free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
- return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
- .proc_name = "esp-blz1230",
- .proc_info = esp_proc_info,
- .name = "Blizzard1230 SCSI IV",
- .detect = blz1230_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = blz1230_esp_release,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/blz2060.c b/drivers/scsi/blz2060.c
deleted file mode 100644
index b6203ec..0000000
--- a/drivers/scsi/blz2060.c
+++ /dev/null
@@ -1,306 +0,0 @@
-/* blz2060.c: Driver for Blizzard 2060 SCSI Controller.
- *
- * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
- *
- * This driver is based on the CyberStorm driver, hence the occasional
- * reference to CyberStorm.
- */
-
-/* TODO:
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- * to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- * routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define BLZ2060_ESP_ADDR 0x1ff00
-#define BLZ2060_DMA_ADDR 0x1ffe0
-
-
-/* The Blizzard 2060 DMA interface
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * Only two things can be programmed in the Blizzard DMA:
- * 1) The data direction is controlled by the status of bit 31 (1 = write)
- * 2) The source/dest address (word aligned, shifted one right) in bits 30-0
- *
- * Figure out interrupt status by reading the ESP status byte.
- */
-struct blz2060_dma_registers {
- volatile unsigned char dma_led_ctrl; /* DMA led control [0x000] */
- unsigned char dmapad1[0x0f];
- volatile unsigned char dma_addr0; /* DMA address (MSB) [0x010] */
- unsigned char dmapad2[0x03];
- volatile unsigned char dma_addr1; /* DMA address [0x014] */
- unsigned char dmapad3[0x03];
- volatile unsigned char dma_addr2; /* DMA address [0x018] */
- unsigned char dmapad4[0x03];
- volatile unsigned char dma_addr3; /* DMA address (LSB) [0x01c] */
-};
-
-#define BLZ2060_DMA_WRITE 0x80000000
-
-/* DMA control bits */
-#define BLZ2060_DMA_LED 0x02 /* HD led control 1 = off */
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int dma_irq_p(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static volatile unsigned char cmd_buffer[16];
- /* This is where all commands are put
- * before they are transferred to the ESP chip
- * via PIO.
- */
-
-/***************************************************************** Detection */
-int __init blz2060_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- struct zorro_dev *z = NULL;
- unsigned long address;
-
- if ((z = zorro_find_device(ZORRO_PROD_PHASE5_BLIZZARD_2060, z))) {
- unsigned long board = z->resource.start;
- if (request_mem_region(board+BLZ2060_ESP_ADDR,
- sizeof(struct ESP_regs), "NCR53C9x")) {
- esp = esp_allocate(tpnt, (void *)board + BLZ2060_ESP_ADDR, 0);
-
- /* Do command transfer with programmed I/O */
- esp->do_pio_cmds = 1;
-
- /* Required functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
- esp->dma_barrier = 0;
- esp->dma_drain = 0;
- esp->dma_invalidate = 0;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = 0;
- esp->dma_led_on = &dma_led_on;
- esp->dma_led_off = &dma_led_off;
- esp->dma_poll = 0;
- esp->dma_reset = 0;
-
- /* SCSI chip speed */
- esp->cfreq = 40000000;
-
- /* The DMA registers on the Blizzard are mapped
- * relative to the device (i.e. in the same Zorro
- * I/O block).
- */
- address = (unsigned long)ZTWO_VADDR(board);
- esp->dregs = (void *)(address + BLZ2060_DMA_ADDR);
-
- /* ESP register base */
- esp->eregs = (struct ESP_regs *)(address + BLZ2060_ESP_ADDR);
-
- /* Set the command buffer */
- esp->esp_command = cmd_buffer;
- esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
- esp->irq = IRQ_AMIGA_PORTS;
- request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
- "Blizzard 2060 SCSI", esp->ehost);
-
- /* Figure out our scsi ID on the bus */
- esp->scsi_id = 7;
-
- /* We don't have a differential SCSI-bus. */
- esp->diff = 0;
-
- esp_initialize(esp);
-
- printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
- esps_running = esps_in_use;
- return esps_in_use;
- }
- }
- return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- /* Since the Blizzard DMA is fully dedicated to the ESP chip,
- * the number of bytes sent (to the ESP chip) equals the number
- * of bytes in the FIFO - there is no buffering in the DMA controller.
- * XXXX Do I read this right? It is from host to ESP, right?
- */
- return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- /* I don't think there's any limit on the Blizzard DMA. So we use what
- * the ESP chip can handle (24 bit).
- */
- unsigned long sz = sp->SCp.this_residual;
- if(sz > 0x1000000)
- sz = 0x1000000;
- return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
- ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
- amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct blz2060_dma_registers *dregs =
- (struct blz2060_dma_registers *) (esp->dregs);
-
- cache_clear(addr, length);
-
- addr >>= 1;
- addr &= ~(BLZ2060_DMA_WRITE);
- dregs->dma_addr3 = (addr ) & 0xff;
- dregs->dma_addr2 = (addr >> 8) & 0xff;
- dregs->dma_addr1 = (addr >> 16) & 0xff;
- dregs->dma_addr0 = (addr >> 24) & 0xff;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct blz2060_dma_registers *dregs =
- (struct blz2060_dma_registers *) (esp->dregs);
-
- cache_push(addr, length);
-
- addr >>= 1;
- addr |= BLZ2060_DMA_WRITE;
- dregs->dma_addr3 = (addr ) & 0xff;
- dregs->dma_addr2 = (addr >> 8) & 0xff;
- dregs->dma_addr1 = (addr >> 16) & 0xff;
- dregs->dma_addr0 = (addr >> 24) & 0xff;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR);
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
- ((struct blz2060_dma_registers *) (esp->dregs))->dma_led_ctrl =
- BLZ2060_DMA_LED;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
- ((struct blz2060_dma_registers *) (esp->dregs))->dma_led_ctrl = 0;
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
- /* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
- * so when (write) is true, it actually means READ!
- */
- if(write){
- dma_init_read(esp, addr, count);
- } else {
- dma_init_write(esp, addr, count);
- }
-}
-
-#define HOSTS_C
-
-int blz2060_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
- unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-
- esp_deallocate((struct NCR_ESP *)instance->hostdata);
- esp_release();
- release_mem_region(address, sizeof(struct ESP_regs));
- free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
- return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
- .proc_name = "esp-blz2060",
- .proc_info = esp_proc_info,
- .name = "Blizzard2060 SCSI",
- .detect = blz2060_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = blz2060_esp_release,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/cyberstorm.c b/drivers/scsi/cyberstorm.c
deleted file mode 100644
index c6b98a4..0000000
--- a/drivers/scsi/cyberstorm.c
+++ /dev/null
@@ -1,377 +0,0 @@
-/* cyberstorm.c: Driver for CyberStorm SCSI Controller.
- *
- * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
- *
- * The CyberStorm SCSI driver is based on David S. Miller's ESP driver
- * for the Sparc computers.
- *
- * This work was made possible by Phase5 who willingly (and most generously)
- * supported me with hardware and all the information I needed.
- */
-
-/* TODO:
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- * to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- * routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define CYBER_ESP_ADDR 0xf400
-#define CYBER_DMA_ADDR 0xf800
-
-
-/* The CyberStorm DMA interface */
-struct cyber_dma_registers {
- volatile unsigned char dma_addr0; /* DMA address (MSB) [0x000] */
- unsigned char dmapad1[1];
- volatile unsigned char dma_addr1; /* DMA address [0x002] */
- unsigned char dmapad2[1];
- volatile unsigned char dma_addr2; /* DMA address [0x004] */
- unsigned char dmapad3[1];
- volatile unsigned char dma_addr3; /* DMA address (LSB) [0x006] */
- unsigned char dmapad4[0x3fb];
- volatile unsigned char cond_reg; /* DMA cond (ro) [0x402] */
-#define ctrl_reg cond_reg /* DMA control (wo) [0x402] */
-};
-
-/* DMA control bits */
-#define CYBER_DMA_LED 0x80 /* HD led control 1 = on */
-#define CYBER_DMA_WRITE 0x40 /* DMA direction. 1 = write */
-#define CYBER_DMA_Z3 0x20 /* 16 (Z2) or 32 (CHIP/Z3) bit DMA transfer */
-
-/* DMA status bits */
-#define CYBER_DMA_HNDL_INTR 0x80 /* DMA IRQ pending? */
-
-/* The bits below appears to be Phase5 Debug bits only; they were not
- * described by Phase5 so using them may seem a bit stupid...
- */
-#define CYBER_HOST_ID 0x02 /* If set, host ID should be 7, otherwise
- * it should be 6.
- */
-#define CYBER_SLOW_CABLE 0x08 /* If *not* set, assume SLOW_CABLE */
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int dma_irq_p(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static unsigned char ctrl_data = 0; /* Keep backup of the stuff written
- * to ctrl_reg. Always write a copy
- * to this register when writing to
- * the hardware register!
- */
-
-static volatile unsigned char cmd_buffer[16];
- /* This is where all commands are put
- * before they are transferred to the ESP chip
- * via PIO.
- */
-
-/***************************************************************** Detection */
-int __init cyber_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- struct zorro_dev *z = NULL;
- unsigned long address;
-
- while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
- unsigned long board = z->resource.start;
- if ((z->id == ZORRO_PROD_PHASE5_BLIZZARD_1220_CYBERSTORM ||
- z->id == ZORRO_PROD_PHASE5_BLIZZARD_1230_II_FASTLANE_Z3_CYBERSCSI_CYBERSTORM060) &&
- request_mem_region(board+CYBER_ESP_ADDR,
- sizeof(struct ESP_regs), "NCR53C9x")) {
- /* Figure out if this is a CyberStorm or really a
- * Fastlane/Blizzard Mk II by looking at the board size.
- * CyberStorm maps 64kB
- * (ZORRO_PROD_PHASE5_BLIZZARD_1220_CYBERSTORM does anyway)
- */
- if(z->resource.end-board != 0xffff) {
- release_mem_region(board+CYBER_ESP_ADDR,
- sizeof(struct ESP_regs));
- return 0;
- }
- esp = esp_allocate(tpnt, (void *)board + CYBER_ESP_ADDR, 0);
-
- /* Do command transfer with programmed I/O */
- esp->do_pio_cmds = 1;
-
- /* Required functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
- esp->dma_barrier = 0;
- esp->dma_drain = 0;
- esp->dma_invalidate = 0;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = 0;
- esp->dma_led_on = &dma_led_on;
- esp->dma_led_off = &dma_led_off;
- esp->dma_poll = 0;
- esp->dma_reset = 0;
-
- /* SCSI chip speed */
- esp->cfreq = 40000000;
-
- /* The DMA registers on the CyberStorm are mapped
- * relative to the device (i.e. in the same Zorro
- * I/O block).
- */
- address = (unsigned long)ZTWO_VADDR(board);
- esp->dregs = (void *)(address + CYBER_DMA_ADDR);
-
- /* ESP register base */
- esp->eregs = (struct ESP_regs *)(address + CYBER_ESP_ADDR);
-
- /* Set the command buffer */
- esp->esp_command = cmd_buffer;
- esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
- esp->irq = IRQ_AMIGA_PORTS;
- request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
- "CyberStorm SCSI", esp->ehost);
- /* Figure out our scsi ID on the bus */
- /* The DMA cond flag contains a hardcoded jumper bit
- * which can be used to select host number 6 or 7.
- * However, even though it may change, we use a hardcoded
- * value of 7.
- */
- esp->scsi_id = 7;
-
- /* We don't have a differential SCSI-bus. */
- esp->diff = 0;
-
- esp_initialize(esp);
-
- printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
- esps_running = esps_in_use;
- return esps_in_use;
- }
- }
- return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- /* Since the CyberStorm DMA is fully dedicated to the ESP chip,
- * the number of bytes sent (to the ESP chip) equals the number
- * of bytes in the FIFO - there is no buffering in the DMA controller.
- * XXXX Do I read this right? It is from host to ESP, right?
- */
- return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- /* I don't think there's any limit on the CyberDMA. So we use what
- * the ESP chip can handle (24 bit).
- */
- unsigned long sz = sp->SCp.this_residual;
- if(sz > 0x1000000)
- sz = 0x1000000;
- return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
- ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
- esp->esp_id, ((struct cyber_dma_registers *)
- (esp->dregs))->cond_reg));
- ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
- amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct cyber_dma_registers *dregs =
- (struct cyber_dma_registers *) esp->dregs;
-
- cache_clear(addr, length);
-
- addr &= ~(1);
- dregs->dma_addr0 = (addr >> 24) & 0xff;
- dregs->dma_addr1 = (addr >> 16) & 0xff;
- dregs->dma_addr2 = (addr >> 8) & 0xff;
- dregs->dma_addr3 = (addr ) & 0xff;
- ctrl_data &= ~(CYBER_DMA_WRITE);
-
- /* Check if physical address is outside Z2 space and of
- * block length/block aligned in memory. If this is the
- * case, enable 32 bit transfer. In all other cases, fall back
- * to 16 bit transfer.
- * Obviously 32 bit transfer should be enabled if the DMA address
- * and length are 32 bit aligned. However, this leads to some
- * strange behavior. Even 64 bit aligned addr/length fails.
- * Until I've found a reason for this, 32 bit transfer is only
- * used for full-block transfers (1kB).
- * -jskov
- */
-#if 0
- if((addr & 0x3fc) || length & 0x3ff || ((addr > 0x200000) &&
- (addr < 0xff0000)))
- ctrl_data &= ~(CYBER_DMA_Z3); /* Z2, do 16 bit DMA */
- else
- ctrl_data |= CYBER_DMA_Z3; /* CHIP/Z3, do 32 bit DMA */
-#else
- ctrl_data &= ~(CYBER_DMA_Z3); /* Z2, do 16 bit DMA */
-#endif
- dregs->ctrl_reg = ctrl_data;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct cyber_dma_registers *dregs =
- (struct cyber_dma_registers *) esp->dregs;
-
- cache_push(addr, length);
-
- addr |= 1;
- dregs->dma_addr0 = (addr >> 24) & 0xff;
- dregs->dma_addr1 = (addr >> 16) & 0xff;
- dregs->dma_addr2 = (addr >> 8) & 0xff;
- dregs->dma_addr3 = (addr ) & 0xff;
- ctrl_data |= CYBER_DMA_WRITE;
-
- /* See comment above */
-#if 0
- if((addr & 0x3fc) || length & 0x3ff || ((addr > 0x200000) &&
- (addr < 0xff0000)))
- ctrl_data &= ~(CYBER_DMA_Z3); /* Z2, do 16 bit DMA */
- else
- ctrl_data |= CYBER_DMA_Z3; /* CHIP/Z3, do 32 bit DMA */
-#else
- ctrl_data &= ~(CYBER_DMA_Z3); /* Z2, do 16 bit DMA */
-#endif
- dregs->ctrl_reg = ctrl_data;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- /* It's important to check the DMA IRQ bit in the correct way! */
- return ((esp_read(esp->eregs->esp_status) & ESP_STAT_INTR) &&
- ((((struct cyber_dma_registers *)(esp->dregs))->cond_reg) &
- CYBER_DMA_HNDL_INTR));
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
- ctrl_data &= ~CYBER_DMA_LED;
- ((struct cyber_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
- ctrl_data |= CYBER_DMA_LED;
- ((struct cyber_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
- /* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
- * so when (write) is true, it actually means READ!
- */
- if(write){
- dma_init_read(esp, addr, count);
- } else {
- dma_init_write(esp, addr, count);
- }
-}
-
-#define HOSTS_C
-
-int cyber_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
- unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-
- esp_deallocate((struct NCR_ESP *)instance->hostdata);
- esp_release();
- release_mem_region(address, sizeof(struct ESP_regs));
- free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
- return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
- .proc_name = "esp-cyberstorm",
- .proc_info = esp_proc_info,
- .name = "CyberStorm SCSI",
- .detect = cyber_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = cyber_esp_release,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/cyberstormII.c b/drivers/scsi/cyberstormII.c
deleted file mode 100644
index e336e85..0000000
--- a/drivers/scsi/cyberstormII.c
+++ /dev/null
@@ -1,314 +0,0 @@
-/* cyberstormII.c: Driver for CyberStorm SCSI Mk II
- *
- * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
- *
- * This driver is based on cyberstorm.c
- */
-
-/* TODO:
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- * to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- * routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define CYBERII_ESP_ADDR 0x1ff03
-#define CYBERII_DMA_ADDR 0x1ff43
-
-
-/* The CyberStorm II DMA interface */
-struct cyberII_dma_registers {
- volatile unsigned char cond_reg; /* DMA cond (ro) [0x000] */
-#define ctrl_reg cond_reg /* DMA control (wo) [0x000] */
- unsigned char dmapad4[0x3f];
- volatile unsigned char dma_addr0; /* DMA address (MSB) [0x040] */
- unsigned char dmapad1[3];
- volatile unsigned char dma_addr1; /* DMA address [0x044] */
- unsigned char dmapad2[3];
- volatile unsigned char dma_addr2; /* DMA address [0x048] */
- unsigned char dmapad3[3];
- volatile unsigned char dma_addr3; /* DMA address (LSB) [0x04c] */
-};
-
-/* DMA control bits */
-#define CYBERII_DMA_LED 0x02 /* HD led control 1 = on */
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int dma_irq_p(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static volatile unsigned char cmd_buffer[16];
- /* This is where all commands are put
- * before they are transferred to the ESP chip
- * via PIO.
- */
-
-/***************************************************************** Detection */
-int __init cyberII_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- struct zorro_dev *z = NULL;
- unsigned long address;
- struct ESP_regs *eregs;
-
- if ((z = zorro_find_device(ZORRO_PROD_PHASE5_CYBERSTORM_MK_II, z))) {
- unsigned long board = z->resource.start;
- if (request_mem_region(board+CYBERII_ESP_ADDR,
- sizeof(struct ESP_regs), "NCR53C9x")) {
- /* Do some magic to figure out if the CyberStorm Mk II
- * is equipped with a SCSI controller
- */
- address = (unsigned long)ZTWO_VADDR(board);
- eregs = (struct ESP_regs *)(address + CYBERII_ESP_ADDR);
-
- esp = esp_allocate(tpnt, (void *)board + CYBERII_ESP_ADDR, 0);
-
- esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
- udelay(5);
- if(esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7)) {
- esp_deallocate(esp);
- scsi_unregister(esp->ehost);
- release_mem_region(board+CYBERII_ESP_ADDR,
- sizeof(struct ESP_regs));
- return 0; /* Bail out if address did not hold data */
- }
-
- /* Do command transfer with programmed I/O */
- esp->do_pio_cmds = 1;
-
- /* Required functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
- esp->dma_barrier = 0;
- esp->dma_drain = 0;
- esp->dma_invalidate = 0;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = 0;
- esp->dma_led_on = &dma_led_on;
- esp->dma_led_off = &dma_led_off;
- esp->dma_poll = 0;
- esp->dma_reset = 0;
-
- /* SCSI chip speed */
- esp->cfreq = 40000000;
-
- /* The DMA registers on the CyberStorm are mapped
- * relative to the device (i.e. in the same Zorro
- * I/O block).
- */
- esp->dregs = (void *)(address + CYBERII_DMA_ADDR);
-
- /* ESP register base */
- esp->eregs = eregs;
-
- /* Set the command buffer */
- esp->esp_command = cmd_buffer;
- esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
- esp->irq = IRQ_AMIGA_PORTS;
- request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
- "CyberStorm SCSI Mk II", esp->ehost);
-
- /* Figure out our scsi ID on the bus */
- esp->scsi_id = 7;
-
- /* We don't have a differential SCSI-bus. */
- esp->diff = 0;
-
- esp_initialize(esp);
-
- printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
- esps_running = esps_in_use;
- return esps_in_use;
- }
- }
- return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- /* Since the CyberStorm DMA is fully dedicated to the ESP chip,
- * the number of bytes sent (to the ESP chip) equals the number
- * of bytes in the FIFO - there is no buffering in the DMA controller.
- * XXXX Do I read this right? It is from host to ESP, right?
- */
- return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- /* I don't think there's any limit on the CyberDMA. So we use what
- * the ESP chip can handle (24 bit).
- */
- unsigned long sz = sp->SCp.this_residual;
- if(sz > 0x1000000)
- sz = 0x1000000;
- return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
- ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
- esp->esp_id, ((struct cyberII_dma_registers *)
- (esp->dregs))->cond_reg));
- ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
- amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct cyberII_dma_registers *dregs =
- (struct cyberII_dma_registers *) esp->dregs;
-
- cache_clear(addr, length);
-
- addr &= ~(1);
- dregs->dma_addr0 = (addr >> 24) & 0xff;
- dregs->dma_addr1 = (addr >> 16) & 0xff;
- dregs->dma_addr2 = (addr >> 8) & 0xff;
- dregs->dma_addr3 = (addr ) & 0xff;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct cyberII_dma_registers *dregs =
- (struct cyberII_dma_registers *) esp->dregs;
-
- cache_push(addr, length);
-
- addr |= 1;
- dregs->dma_addr0 = (addr >> 24) & 0xff;
- dregs->dma_addr1 = (addr >> 16) & 0xff;
- dregs->dma_addr2 = (addr >> 8) & 0xff;
- dregs->dma_addr3 = (addr ) & 0xff;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- /* It's important to check the DMA IRQ bit in the correct way! */
- return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR);
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
- ((struct cyberII_dma_registers *)(esp->dregs))->ctrl_reg &= ~CYBERII_DMA_LED;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
- ((struct cyberII_dma_registers *)(esp->dregs))->ctrl_reg |= CYBERII_DMA_LED;
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
- /* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
- * so when (write) is true, it actually means READ!
- */
- if(write){
- dma_init_read(esp, addr, count);
- } else {
- dma_init_write(esp, addr, count);
- }
-}
-
-#define HOSTS_C
-
-int cyberII_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
- unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-
- esp_deallocate((struct NCR_ESP *)instance->hostdata);
- esp_release();
- release_mem_region(address, sizeof(struct ESP_regs));
- free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
- return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
- .proc_name = "esp-cyberstormII",
- .proc_info = esp_proc_info,
- .name = "CyberStorm Mk II SCSI",
- .detect = cyberII_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = cyberII_esp_release,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/dec_esp.c b/drivers/scsi/dec_esp.c
deleted file mode 100644
index d42ad66..0000000
--- a/drivers/scsi/dec_esp.c
+++ /dev/null
@@ -1,687 +0,0 @@
-/*
- * dec_esp.c: Driver for SCSI chips on IOASIC based TURBOchannel DECstations
- * and TURBOchannel PMAZ-A cards
- *
- * TURBOchannel changes by Harald Koerfgen
- * PMAZ-A support by David Airlie
- *
- * based on jazz_esp.c:
- * Copyright (C) 1997 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
- *
- * jazz_esp is based on David S. Miller's ESP driver and cyber_esp
- *
- * 20000819 - Small PMAZ-AA fixes by Florian Lohoff <flo@rfc822.org>
- * Be warned the PMAZ-AA works currently as a single card.
- * Dont try to put multiple cards in one machine - They are
- * both detected but it may crash under high load garbling your
- * data.
- * 20001005 - Initialization fixes for 2.4.0-test9
- * Florian Lohoff <flo@rfc822.org>
- *
- * Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki
- */
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/stat.h>
-#include <linux/tc.h>
-
-#include <asm/dma.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-
-#include <asm/dec/interrupts.h>
-#include <asm/dec/ioasic.h>
-#include <asm/dec/ioasic_addrs.h>
-#include <asm/dec/ioasic_ints.h>
-#include <asm/dec/machtype.h>
-#include <asm/dec/system.h>
-
-#define DEC_SCSI_SREG 0
-#define DEC_SCSI_DMAREG 0x40000
-#define DEC_SCSI_SRAM 0x80000
-#define DEC_SCSI_DIAG 0xC0000
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static void dma_drain(struct NCR_ESP *esp);
-static int dma_can_transfer(struct NCR_ESP *esp, struct scsi_cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length);
-static void dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int dma_irq_p(struct NCR_ESP *esp);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write);
-static void dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-static void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-static void dma_advance_sg(struct scsi_cmnd * sp);
-
-static void pmaz_dma_drain(struct NCR_ESP *esp);
-static void pmaz_dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length);
-static void pmaz_dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length);
-static void pmaz_dma_ints_off(struct NCR_ESP *esp);
-static void pmaz_dma_ints_on(struct NCR_ESP *esp);
-static void pmaz_dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write);
-static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-
-#define TC_ESP_RAM_SIZE 0x20000
-#define ESP_TGT_DMA_SIZE ((TC_ESP_RAM_SIZE/7) & ~(sizeof(int)-1))
-#define ESP_NCMD 7
-
-#define TC_ESP_DMAR_MASK 0x1ffff
-#define TC_ESP_DMAR_WRITE 0x80000000
-#define TC_ESP_DMA_ADDR(x) ((unsigned)(x) & TC_ESP_DMAR_MASK)
-
-u32 esp_virt_buffer;
-int scsi_current_length;
-
-volatile unsigned char cmd_buffer[16];
-volatile unsigned char pmaz_cmd_buffer[16];
- /* This is where all commands are put
- * before they are trasfered to the ESP chip
- * via PIO.
- */
-
-static irqreturn_t scsi_dma_merr_int(int, void *);
-static irqreturn_t scsi_dma_err_int(int, void *);
-static irqreturn_t scsi_dma_int(int, void *);
-
-static struct scsi_host_template dec_esp_template = {
- .module = THIS_MODULE,
- .name = "NCR53C94",
- .info = esp_info,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .proc_info = esp_proc_info,
- .proc_name = "dec_esp",
- .can_queue = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = DISABLE_CLUSTERING,
-};
-
-static struct NCR_ESP *dec_esp_platform;
-
-/***************************************************************** Detection */
-static int dec_esp_platform_probe(void)
-{
- struct NCR_ESP *esp;
- int err = 0;
-
- if (IOASIC) {
- esp = esp_allocate(&dec_esp_template, NULL, 1);
-
- /* Do command transfer with programmed I/O */
- esp->do_pio_cmds = 1;
-
- /* Required functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
- esp->dma_barrier = 0;
- esp->dma_drain = &dma_drain;
- esp->dma_invalidate = 0;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = 0;
- esp->dma_poll = 0;
- esp->dma_reset = 0;
- esp->dma_led_off = 0;
- esp->dma_led_on = 0;
-
- /* virtual DMA functions */
- esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one;
- esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl;
- esp->dma_mmu_release_scsi_one = 0;
- esp->dma_mmu_release_scsi_sgl = 0;
- esp->dma_advance_sg = &dma_advance_sg;
-
-
- /* SCSI chip speed */
- esp->cfreq = 25000000;
-
- esp->dregs = 0;
-
- /* ESP register base */
- esp->eregs = (void *)CKSEG1ADDR(dec_kn_slot_base +
- IOASIC_SCSI);
-
- /* Set the command buffer */
- esp->esp_command = (volatile unsigned char *) cmd_buffer;
-
- /* get virtual dma address for command buffer */
- esp->esp_command_dvma = virt_to_phys(cmd_buffer);
-
- esp->irq = dec_interrupt[DEC_IRQ_ASC];
-
- esp->scsi_id = 7;
-
- /* Check for differential SCSI-bus */
- esp->diff = 0;
-
- err = request_irq(esp->irq, esp_intr, IRQF_DISABLED,
- "ncr53c94", esp->ehost);
- if (err)
- goto err_alloc;
- err = request_irq(dec_interrupt[DEC_IRQ_ASC_MERR],
- scsi_dma_merr_int, IRQF_DISABLED,
- "ncr53c94 error", esp->ehost);
- if (err)
- goto err_irq;
- err = request_irq(dec_interrupt[DEC_IRQ_ASC_ERR],
- scsi_dma_err_int, IRQF_DISABLED,
- "ncr53c94 overrun", esp->ehost);
- if (err)
- goto err_irq_merr;
- err = request_irq(dec_interrupt[DEC_IRQ_ASC_DMA], scsi_dma_int,
- IRQF_DISABLED, "ncr53c94 dma", esp->ehost);
- if (err)
- goto err_irq_err;
-
- esp_initialize(esp);
-
- err = scsi_add_host(esp->ehost, NULL);
- if (err) {
- printk(KERN_ERR "ESP: Unable to register adapter\n");
- goto err_irq_dma;
- }
-
- scsi_scan_host(esp->ehost);
-
- dec_esp_platform = esp;
- }
-
- return 0;
-
-err_irq_dma:
- free_irq(dec_interrupt[DEC_IRQ_ASC_DMA], esp->ehost);
-err_irq_err:
- free_irq(dec_interrupt[DEC_IRQ_ASC_ERR], esp->ehost);
-err_irq_merr:
- free_irq(dec_interrupt[DEC_IRQ_ASC_MERR], esp->ehost);
-err_irq:
- free_irq(esp->irq, esp->ehost);
-err_alloc:
- esp_deallocate(esp);
- scsi_host_put(esp->ehost);
- return err;
-}
-
-static int __init dec_esp_probe(struct device *dev)
-{
- struct NCR_ESP *esp;
- resource_size_t start, len;
- int err;
-
- esp = esp_allocate(&dec_esp_template, NULL, 1);
-
- dev_set_drvdata(dev, esp);
-
- start = to_tc_dev(dev)->resource.start;
- len = to_tc_dev(dev)->resource.end - start + 1;
-
- if (!request_mem_region(start, len, dev->bus_id)) {
- printk(KERN_ERR "%s: Unable to reserve MMIO resource\n",
- dev->bus_id);
- err = -EBUSY;
- goto err_alloc;
- }
-
- /* Store base addr into esp struct. */
- esp->slot = start;
-
- esp->dregs = 0;
- esp->eregs = (void *)CKSEG1ADDR(start + DEC_SCSI_SREG);
- esp->do_pio_cmds = 1;
-
- /* Set the command buffer. */
- esp->esp_command = (volatile unsigned char *)pmaz_cmd_buffer;
-
- /* Get virtual dma address for command buffer. */
- esp->esp_command_dvma = virt_to_phys(pmaz_cmd_buffer);
-
- esp->cfreq = tc_get_speed(to_tc_dev(dev)->bus);
-
- esp->irq = to_tc_dev(dev)->interrupt;
-
- /* Required functions. */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &pmaz_dma_init_read;
- esp->dma_init_write = &pmaz_dma_init_write;
- esp->dma_ints_off = &pmaz_dma_ints_off;
- esp->dma_ints_on = &pmaz_dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &pmaz_dma_setup;
-
- /* Optional functions. */
- esp->dma_barrier = 0;
- esp->dma_drain = &pmaz_dma_drain;
- esp->dma_invalidate = 0;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = 0;
- esp->dma_poll = 0;
- esp->dma_reset = 0;
- esp->dma_led_off = 0;
- esp->dma_led_on = 0;
-
- esp->dma_mmu_get_scsi_one = pmaz_dma_mmu_get_scsi_one;
- esp->dma_mmu_get_scsi_sgl = 0;
- esp->dma_mmu_release_scsi_one = 0;
- esp->dma_mmu_release_scsi_sgl = 0;
- esp->dma_advance_sg = 0;
-
- err = request_irq(esp->irq, esp_intr, IRQF_DISABLED, "PMAZ_AA",
- esp->ehost);
- if (err) {
- printk(KERN_ERR "%s: Unable to get IRQ %d\n",
- dev->bus_id, esp->irq);
- goto err_resource;
- }
-
- esp->scsi_id = 7;
- esp->diff = 0;
- esp_initialize(esp);
-
- err = scsi_add_host(esp->ehost, dev);
- if (err) {
- printk(KERN_ERR "%s: Unable to register adapter\n",
- dev->bus_id);
- goto err_irq;
- }
-
- scsi_scan_host(esp->ehost);
-
- return 0;
-
-err_irq:
- free_irq(esp->irq, esp->ehost);
-
-err_resource:
- release_mem_region(start, len);
-
-err_alloc:
- esp_deallocate(esp);
- scsi_host_put(esp->ehost);
- return err;
-}
-
-static void __exit dec_esp_platform_remove(void)
-{
- struct NCR_ESP *esp = dec_esp_platform;
-
- free_irq(esp->irq, esp->ehost);
- esp_deallocate(esp);
- scsi_host_put(esp->ehost);
- dec_esp_platform = NULL;
-}
-
-static void __exit dec_esp_remove(struct device *dev)
-{
- struct NCR_ESP *esp = dev_get_drvdata(dev);
-
- free_irq(esp->irq, esp->ehost);
- esp_deallocate(esp);
- scsi_host_put(esp->ehost);
-}
-
-
-/************************************************************* DMA Functions */
-static irqreturn_t scsi_dma_merr_int(int irq, void *dev_id)
-{
- printk("Got unexpected SCSI DMA Interrupt! < ");
- printk("SCSI_DMA_MEMRDERR ");
- printk(">\n");
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t scsi_dma_err_int(int irq, void *dev_id)
-{
- /* empty */
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t scsi_dma_int(int irq, void *dev_id)
-{
- u32 scsi_next_ptr;
-
- scsi_next_ptr = ioasic_read(IO_REG_SCSI_DMA_P);
-
- /* next page */
- scsi_next_ptr = (((scsi_next_ptr >> 3) + PAGE_SIZE) & PAGE_MASK) << 3;
- ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
- fast_iob();
-
- return IRQ_HANDLED;
-}
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- return fifo_count;
-}
-
-static void dma_drain(struct NCR_ESP *esp)
-{
- u32 nw, data0, data1, scsi_data_ptr;
- u16 *p;
-
- nw = ioasic_read(IO_REG_SCSI_SCR);
-
- /*
- * Is there something in the dma buffers left?
- */
- if (nw) {
- scsi_data_ptr = ioasic_read(IO_REG_SCSI_DMA_P) >> 3;
- p = phys_to_virt(scsi_data_ptr);
- switch (nw) {
- case 1:
- data0 = ioasic_read(IO_REG_SCSI_SDR0);
- p[0] = data0 & 0xffff;
- break;
- case 2:
- data0 = ioasic_read(IO_REG_SCSI_SDR0);
- p[0] = data0 & 0xffff;
- p[1] = (data0 >> 16) & 0xffff;
- break;
- case 3:
- data0 = ioasic_read(IO_REG_SCSI_SDR0);
- data1 = ioasic_read(IO_REG_SCSI_SDR1);
- p[0] = data0 & 0xffff;
- p[1] = (data0 >> 16) & 0xffff;
- p[2] = data1 & 0xffff;
- break;
- default:
- printk("Strange: %d words in dma buffer left\n", nw);
- break;
- }
- }
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
- return sp->SCp.this_residual;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-}
-
-static void dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length)
-{
- u32 scsi_next_ptr, ioasic_ssr;
- unsigned long flags;
-
- if (vaddress & 3)
- panic("dec_esp.c: unable to handle partial word transfers, yet...");
-
- dma_cache_wback_inv((unsigned long) phys_to_virt(vaddress), length);
-
- spin_lock_irqsave(&ioasic_ssr_lock, flags);
-
- fast_mb();
- ioasic_ssr = ioasic_read(IO_REG_SSR);
-
- ioasic_ssr &= ~IO_SSR_SCSI_DMA_EN;
- ioasic_write(IO_REG_SSR, ioasic_ssr);
-
- fast_wmb();
- ioasic_write(IO_REG_SCSI_SCR, 0);
- ioasic_write(IO_REG_SCSI_DMA_P, vaddress << 3);
-
- /* prepare for next page */
- scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
- ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
-
- ioasic_ssr |= (IO_SSR_SCSI_DMA_DIR | IO_SSR_SCSI_DMA_EN);
- fast_wmb();
- ioasic_write(IO_REG_SSR, ioasic_ssr);
-
- fast_iob();
- spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
-}
-
-static void dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length)
-{
- u32 scsi_next_ptr, ioasic_ssr;
- unsigned long flags;
-
- if (vaddress & 3)
- panic("dec_esp.c: unable to handle partial word transfers, yet...");
-
- dma_cache_wback_inv((unsigned long) phys_to_virt(vaddress), length);
-
- spin_lock_irqsave(&ioasic_ssr_lock, flags);
-
- fast_mb();
- ioasic_ssr = ioasic_read(IO_REG_SSR);
-
- ioasic_ssr &= ~(IO_SSR_SCSI_DMA_DIR | IO_SSR_SCSI_DMA_EN);
- ioasic_write(IO_REG_SSR, ioasic_ssr);
-
- fast_wmb();
- ioasic_write(IO_REG_SCSI_SCR, 0);
- ioasic_write(IO_REG_SCSI_DMA_P, vaddress << 3);
-
- /* prepare for next page */
- scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
- ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
-
- ioasic_ssr |= IO_SSR_SCSI_DMA_EN;
- fast_wmb();
- ioasic_write(IO_REG_SSR, ioasic_ssr);
-
- fast_iob();
- spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- disable_irq(dec_interrupt[DEC_IRQ_ASC_DMA]);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- enable_irq(dec_interrupt[DEC_IRQ_ASC_DMA]);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- return (esp->eregs->esp_status & ESP_STAT_INTR);
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- /*
- * FIXME: what's this good for?
- */
- return 1;
-}
-
-static void dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write)
-{
- /*
- * DMA_ST_WRITE means "move data from device to memory"
- * so when (write) is true, it actually means READ!
- */
- if (write)
- dma_init_read(esp, addr, count);
- else
- dma_init_write(esp, addr, count);
-}
-
-static void dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
- sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
-}
-
-static void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
- int sz = sp->SCp.buffers_residual;
- struct scatterlist *sg = sp->SCp.buffer;
-
- while (sz >= 0) {
- sg[sz].dma_address = page_to_phys(sg[sz].page) + sg[sz].offset;
- sz--;
- }
- sp->SCp.ptr = (char *)(sp->SCp.buffer->dma_address);
-}
-
-static void dma_advance_sg(struct scsi_cmnd * sp)
-{
- sp->SCp.ptr = (char *)(sp->SCp.buffer->dma_address);
-}
-
-static void pmaz_dma_drain(struct NCR_ESP *esp)
-{
- memcpy(phys_to_virt(esp_virt_buffer),
- (void *)CKSEG1ADDR(esp->slot + DEC_SCSI_SRAM +
- ESP_TGT_DMA_SIZE),
- scsi_current_length);
-}
-
-static void pmaz_dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length)
-{
- volatile u32 *dmareg =
- (volatile u32 *)CKSEG1ADDR(esp->slot + DEC_SCSI_DMAREG);
-
- if (length > ESP_TGT_DMA_SIZE)
- length = ESP_TGT_DMA_SIZE;
-
- *dmareg = TC_ESP_DMA_ADDR(ESP_TGT_DMA_SIZE);
-
- iob();
-
- esp_virt_buffer = vaddress;
- scsi_current_length = length;
-}
-
-static void pmaz_dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length)
-{
- volatile u32 *dmareg =
- (volatile u32 *)CKSEG1ADDR(esp->slot + DEC_SCSI_DMAREG);
-
- memcpy((void *)CKSEG1ADDR(esp->slot + DEC_SCSI_SRAM +
- ESP_TGT_DMA_SIZE),
- phys_to_virt(vaddress), length);
-
- wmb();
- *dmareg = TC_ESP_DMAR_WRITE | TC_ESP_DMA_ADDR(ESP_TGT_DMA_SIZE);
-
- iob();
-}
-
-static void pmaz_dma_ints_off(struct NCR_ESP *esp)
-{
-}
-
-static void pmaz_dma_ints_on(struct NCR_ESP *esp)
-{
-}
-
-static void pmaz_dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write)
-{
- /*
- * DMA_ST_WRITE means "move data from device to memory"
- * so when (write) is true, it actually means READ!
- */
- if (write)
- pmaz_dma_init_read(esp, addr, count);
- else
- pmaz_dma_init_write(esp, addr, count);
-}
-
-static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
- sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
-}
-
-
-#ifdef CONFIG_TC
-static int __init dec_esp_tc_probe(struct device *dev);
-static int __exit dec_esp_tc_remove(struct device *dev);
-
-static const struct tc_device_id dec_esp_tc_table[] = {
- { "DEC ", "PMAZ-AA " },
- { }
-};
-MODULE_DEVICE_TABLE(tc, dec_esp_tc_table);
-
-static struct tc_driver dec_esp_tc_driver = {
- .id_table = dec_esp_tc_table,
- .driver = {
- .name = "dec_esp",
- .bus = &tc_bus_type,
- .probe = dec_esp_tc_probe,
- .remove = __exit_p(dec_esp_tc_remove),
- },
-};
-
-static int __init dec_esp_tc_probe(struct device *dev)
-{
- int status = dec_esp_probe(dev);
- if (!status)
- get_device(dev);
- return status;
-}
-
-static int __exit dec_esp_tc_remove(struct device *dev)
-{
- put_device(dev);
- dec_esp_remove(dev);
- return 0;
-}
-#endif
-
-static int __init dec_esp_init(void)
-{
- int status;
-
- status = tc_register_driver(&dec_esp_tc_driver);
- if (!status)
- dec_esp_platform_probe();
-
- if (nesps) {
- pr_info("ESP: Total of %d ESP hosts found, "
- "%d actually in use.\n", nesps, esps_in_use);
- esps_running = esps_in_use;
- }
-
- return status;
-}
-
-static void __exit dec_esp_exit(void)
-{
- dec_esp_platform_remove();
- tc_unregister_driver(&dec_esp_tc_driver);
-}
-
-
-module_init(dec_esp_init);
-module_exit(dec_esp_exit);
diff --git a/drivers/scsi/fastlane.c b/drivers/scsi/fastlane.c
deleted file mode 100644
index 4266a21..0000000
--- a/drivers/scsi/fastlane.c
+++ /dev/null
@@ -1,421 +0,0 @@
-/* fastlane.c: Driver for Phase5's Fastlane SCSI Controller.
- *
- * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
- *
- * This driver is based on the CyberStorm driver, hence the occasional
- * reference to CyberStorm.
- *
- * Betatesting & crucial adjustments by
- * Patrik Rak (prak3264@ss1000.ms.mff.cuni.cz)
- *
- */
-
-/* TODO:
- *
- * o According to the doc from laire, it is required to reset the DMA when
- * the transfer is done. ATM we reset DMA just before every new
- * dma_init_(read|write).
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- * to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- * routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* Such day has just come... */
-#if 0
-/* Let this defined unless you really need to enable DMA IRQ one day */
-#define NODMAIRQ
-#endif
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define FASTLANE_ESP_ADDR 0x1000001
-#define FASTLANE_DMA_ADDR 0x1000041
-
-
-/* The Fastlane DMA interface */
-struct fastlane_dma_registers {
- volatile unsigned char cond_reg; /* DMA status (ro) [0x0000] */
-#define ctrl_reg cond_reg /* DMA control (wo) [0x0000] */
- unsigned char dmapad1[0x3f];
- volatile unsigned char clear_strobe; /* DMA clear (wo) [0x0040] */
-};
-
-
-/* DMA status bits */
-#define FASTLANE_DMA_MINT 0x80
-#define FASTLANE_DMA_IACT 0x40
-#define FASTLANE_DMA_CREQ 0x20
-
-/* DMA control bits */
-#define FASTLANE_DMA_FCODE 0xa0
-#define FASTLANE_DMA_MASK 0xf3
-#define FASTLANE_DMA_LED 0x10 /* HD led control 1 = on */
-#define FASTLANE_DMA_WRITE 0x08 /* 1 = write */
-#define FASTLANE_DMA_ENABLE 0x04 /* Enable DMA */
-#define FASTLANE_DMA_EDI 0x02 /* Enable DMA IRQ ? */
-#define FASTLANE_DMA_ESI 0x01 /* Enable SCSI IRQ */
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int dma_irq_p(struct NCR_ESP *esp);
-static void dma_irq_exit(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static unsigned char ctrl_data = 0; /* Keep backup of the stuff written
- * to ctrl_reg. Always write a copy
- * to this register when writing to
- * the hardware register!
- */
-
-static volatile unsigned char cmd_buffer[16];
- /* This is where all commands are put
- * before they are transferred to the ESP chip
- * via PIO.
- */
-
-static inline void dma_clear(struct NCR_ESP *esp)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
- unsigned long *t;
-
- ctrl_data = (ctrl_data & FASTLANE_DMA_MASK);
- dregs->ctrl_reg = ctrl_data;
-
- t = (unsigned long *)(esp->edev);
-
- dregs->clear_strobe = 0;
- *t = 0 ;
-}
-
-/***************************************************************** Detection */
-int __init fastlane_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- struct zorro_dev *z = NULL;
- unsigned long address;
-
- if ((z = zorro_find_device(ZORRO_PROD_PHASE5_BLIZZARD_1230_II_FASTLANE_Z3_CYBERSCSI_CYBERSTORM060, z))) {
- unsigned long board = z->resource.start;
- if (request_mem_region(board+FASTLANE_ESP_ADDR,
- sizeof(struct ESP_regs), "NCR53C9x")) {
- /* Check if this is really a fastlane controller. The problem
- * is that also the cyberstorm and blizzard controllers use
- * this ID value. Fortunately only Fastlane maps in Z3 space
- */
- if (board < 0x1000000) {
- goto err_release;
- }
- esp = esp_allocate(tpnt, (void *)board + FASTLANE_ESP_ADDR, 0);
-
- /* Do command transfer with programmed I/O */
- esp->do_pio_cmds = 1;
-
- /* Required functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
- esp->dma_barrier = 0;
- esp->dma_drain = 0;
- esp->dma_invalidate = 0;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = &dma_irq_exit;
- esp->dma_led_on = &dma_led_on;
- esp->dma_led_off = &dma_led_off;
- esp->dma_poll = 0;
- esp->dma_reset = 0;
-
- /* Initialize the portBits (enable IRQs) */
- ctrl_data = (FASTLANE_DMA_FCODE |
-#ifndef NODMAIRQ
- FASTLANE_DMA_EDI |
-#endif
- FASTLANE_DMA_ESI);
-
-
- /* SCSI chip clock */
- esp->cfreq = 40000000;
-
-
- /* Map the physical address space into virtual kernel space */
- address = (unsigned long)
- z_ioremap(board, z->resource.end-board+1);
-
- if(!address){
- printk("Could not remap Fastlane controller memory!");
- goto err_unregister;
- }
-
-
- /* The DMA registers on the Fastlane are mapped
- * relative to the device (i.e. in the same Zorro
- * I/O block).
- */
- esp->dregs = (void *)(address + FASTLANE_DMA_ADDR);
-
- /* ESP register base */
- esp->eregs = (struct ESP_regs *)(address + FASTLANE_ESP_ADDR);
-
- /* Board base */
- esp->edev = (void *) address;
-
- /* Set the command buffer */
- esp->esp_command = cmd_buffer;
- esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
- esp->irq = IRQ_AMIGA_PORTS;
- esp->slot = board+FASTLANE_ESP_ADDR;
- if (request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
- "Fastlane SCSI", esp->ehost)) {
- printk(KERN_WARNING "Fastlane: Could not get IRQ%d, aborting.\n", IRQ_AMIGA_PORTS);
- goto err_unmap;
- }
-
- /* Controller ID */
- esp->scsi_id = 7;
-
- /* We don't have a differential SCSI-bus. */
- esp->diff = 0;
-
- dma_clear(esp);
- esp_initialize(esp);
-
- printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
- esps_running = esps_in_use;
- return esps_in_use;
- }
- }
- return 0;
-
- err_unmap:
- z_iounmap((void *)address);
- err_unregister:
- scsi_unregister (esp->ehost);
- err_release:
- release_mem_region(z->resource.start+FASTLANE_ESP_ADDR,
- sizeof(struct ESP_regs));
- return 0;
-}
-
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- /* Since the Fastlane DMA is fully dedicated to the ESP chip,
- * the number of bytes sent (to the ESP chip) equals the number
- * of bytes in the FIFO - there is no buffering in the DMA controller.
- * XXXX Do I read this right? It is from host to ESP, right?
- */
- return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- unsigned long sz = sp->SCp.this_residual;
- if(sz > 0xfffc)
- sz = 0xfffc;
- return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
- ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
- esp->esp_id, ((struct fastlane_dma_registers *)
- (esp->dregs))->cond_reg));
- ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
- amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
- unsigned long *t;
-
- cache_clear(addr, length);
-
- dma_clear(esp);
-
- t = (unsigned long *)((addr & 0x00ffffff) + esp->edev);
-
- dregs->clear_strobe = 0;
- *t = addr;
-
- ctrl_data = (ctrl_data & FASTLANE_DMA_MASK) | FASTLANE_DMA_ENABLE;
- dregs->ctrl_reg = ctrl_data;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
- unsigned long *t;
-
- cache_push(addr, length);
-
- dma_clear(esp);
-
- t = (unsigned long *)((addr & 0x00ffffff) + (esp->edev));
-
- dregs->clear_strobe = 0;
- *t = addr;
-
- ctrl_data = ((ctrl_data & FASTLANE_DMA_MASK) |
- FASTLANE_DMA_ENABLE |
- FASTLANE_DMA_WRITE);
- dregs->ctrl_reg = ctrl_data;
-}
-
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- enable_irq(esp->irq);
-}
-
-static void dma_irq_exit(struct NCR_ESP *esp)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
-
- dregs->ctrl_reg = ctrl_data & ~(FASTLANE_DMA_EDI|FASTLANE_DMA_ESI);
-#ifdef __mc68000__
- nop();
-#endif
- dregs->ctrl_reg = ctrl_data;
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
- unsigned char dma_status;
-
- dma_status = dregs->cond_reg;
-
- if(dma_status & FASTLANE_DMA_IACT)
- return 0; /* not our IRQ */
-
- /* Return non-zero if ESP requested IRQ */
- return (
-#ifndef NODMAIRQ
- (dma_status & FASTLANE_DMA_CREQ) &&
-#endif
- (!(dma_status & FASTLANE_DMA_MINT)) &&
- (esp_read(((struct ESP_regs *) (esp->eregs))->esp_status) & ESP_STAT_INTR));
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
- ctrl_data &= ~FASTLANE_DMA_LED;
- ((struct fastlane_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
- ctrl_data |= FASTLANE_DMA_LED;
- ((struct fastlane_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
- /* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
- * so when (write) is true, it actually means READ!
- */
- if(write){
- dma_init_read(esp, addr, count);
- } else {
- dma_init_write(esp, addr, count);
- }
-}
-
-#define HOSTS_C
-
-int fastlane_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
- unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
- esp_deallocate((struct NCR_ESP *)instance->hostdata);
- esp_release();
- release_mem_region(address, sizeof(struct ESP_regs));
- free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
- return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
- .proc_name = "esp-fastlane",
- .proc_info = esp_proc_info,
- .name = "Fastlane SCSI",
- .detect = fastlane_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = fastlane_esp_release,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = ENABLE_CLUSTERING
-};
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/mac_esp.c b/drivers/scsi/mac_esp.c
deleted file mode 100644
index bcb4902..0000000
--- a/drivers/scsi/mac_esp.c
+++ /dev/null
@@ -1,751 +0,0 @@
-/*
- * 68k mac 53c9[46] scsi driver
- *
- * copyright (c) 1998, David Weis weisd3458@uni.edu
- *
- * debugging on Quadra 800 and 660AV Michael Schmitz, Dave Kilzer 7/98
- *
- * based loosely on cyber_esp.c
- */
-
-/* these are unused for now */
-#define myreadl(addr) (*(volatile unsigned int *) (addr))
-#define mywritel(b, addr) ((*(volatile unsigned int *) (addr)) = (b))
-
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/io.h>
-
-#include <asm/setup.h>
-#include <asm/irq.h>
-#include <asm/macints.h>
-#include <asm/machw.h>
-#include <asm/mac_via.h>
-
-#include <asm/pgtable.h>
-
-#include <asm/macintosh.h>
-
-/* #define DEBUG_MAC_ESP */
-
-extern void esp_handle(struct NCR_ESP *esp);
-extern void mac_esp_intr(int irq, void *dev_id);
-
-static int dma_bytes_sent(struct NCR_ESP * esp, int fifo_count);
-static int dma_can_transfer(struct NCR_ESP * esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP * esp);
-static void dma_init_read(struct NCR_ESP * esp, char * vaddress, int length);
-static void dma_init_write(struct NCR_ESP * esp, char * vaddress, int length);
-static void dma_ints_off(struct NCR_ESP * esp);
-static void dma_ints_on(struct NCR_ESP * esp);
-static int dma_irq_p(struct NCR_ESP * esp);
-static int dma_irq_p_quick(struct NCR_ESP * esp);
-static void dma_led_off(struct NCR_ESP * esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP * esp, __u32 addr, int count, int write);
-static void dma_setup_quick(struct NCR_ESP * esp, __u32 addr, int count, int write);
-
-static int esp_dafb_dma_irq_p(struct NCR_ESP * espdev);
-static int esp_iosb_dma_irq_p(struct NCR_ESP * espdev);
-
-static volatile unsigned char cmd_buffer[16];
- /* This is where all commands are put
- * before they are transferred to the ESP chip
- * via PIO.
- */
-
-static int esp_initialized = 0;
-
-static int setup_num_esps = -1;
-static int setup_disconnect = -1;
-static int setup_nosync = -1;
-static int setup_can_queue = -1;
-static int setup_cmd_per_lun = -1;
-static int setup_sg_tablesize = -1;
-#ifdef SUPPORT_TAGS
-static int setup_use_tagged_queuing = -1;
-#endif
-static int setup_hostid = -1;
-
-/*
- * Experimental ESP inthandler; check macints.c to make sure dev_id is
- * set up properly!
- */
-
-void mac_esp_intr(int irq, void *dev_id)
-{
- struct NCR_ESP *esp = (struct NCR_ESP *) dev_id;
- int irq_p = 0;
-
- /* Handle the one ESP interrupt showing at this IRQ level. */
- if(((esp)->irq & 0xff) == irq) {
- /*
- * Debug ..
- */
- irq_p = esp->dma_irq_p(esp);
- printk("mac_esp: irq_p %x current %p disconnected %p\n",
- irq_p, esp->current_SC, esp->disconnected_SC);
-
- /*
- * Mac: if we're here, it's an ESP interrupt for sure!
- */
- if((esp->current_SC || esp->disconnected_SC)) {
- esp->dma_ints_off(esp);
-
- ESPIRQ(("I%d(", esp->esp_id));
- esp_handle(esp);
- ESPIRQ((")"));
-
- esp->dma_ints_on(esp);
- }
- }
-}
-
-/*
- * Debug hooks; use for playing with the interrupt flag testing and interrupt
- * acknowledge on the various machines
- */
-
-void scsi_esp_polled(int irq, void *dev_id)
-{
- if (esp_initialized == 0)
- return;
-
- mac_esp_intr(irq, dev_id);
-}
-
-void fake_intr(int irq, void *dev_id)
-{
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: got irq\n");
-#endif
-
- mac_esp_intr(irq, dev_id);
-}
-
-irqreturn_t fake_drq(int irq, void *dev_id)
-{
- printk("mac_esp: got drq\n");
- return IRQ_HANDLED;
-}
-
-#define DRIVER_SETUP
-
-/*
- * Function : mac_esp_setup(char *str)
- *
- * Purpose : booter command line initialization of the overrides array,
- *
- * Inputs : str - parameters, separated by commas.
- *
- * Currently unused in the new driver; need to add settable parameters to the
- * detect function.
- *
- */
-
-static int __init mac_esp_setup(char *str) {
-#ifdef DRIVER_SETUP
- /* Format of mac53c9x parameter is:
- * mac53c9x=<num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
- * Negative values mean don't change.
- */
-
- char *this_opt;
- long opt;
-
- this_opt = strsep (&str, ",");
- if(this_opt) {
- opt = simple_strtol( this_opt, NULL, 0 );
-
- if (opt >= 0 && opt <= 2)
- setup_num_esps = opt;
- else if (opt > 2)
- printk( "mac_esp_setup: invalid number of hosts %ld !\n", opt );
-
- this_opt = strsep (&str, ",");
- }
- if(this_opt) {
- opt = simple_strtol( this_opt, NULL, 0 );
-
- if (opt > 0)
- setup_disconnect = opt;
-
- this_opt = strsep (&str, ",");
- }
- if(this_opt) {
- opt = simple_strtol( this_opt, NULL, 0 );
-
- if (opt >= 0)
- setup_nosync = opt;
-
- this_opt = strsep (&str, ",");
- }
- if(this_opt) {
- opt = simple_strtol( this_opt, NULL, 0 );
-
- if (opt > 0)
- setup_can_queue = opt;
-
- this_opt = strsep (&str, ",");
- }
- if(this_opt) {
- opt = simple_strtol( this_opt, NULL, 0 );
-
- if (opt > 0)
- setup_cmd_per_lun = opt;
-
- this_opt = strsep (&str, ",");
- }
- if(this_opt) {
- opt = simple_strtol( this_opt, NULL, 0 );
-
- if (opt >= 0) {
- setup_sg_tablesize = opt;
- /* Must be <= SG_ALL (255) */
- if (setup_sg_tablesize > SG_ALL)
- setup_sg_tablesize = SG_ALL;
- }
-
- this_opt = strsep (&str, ",");
- }
- if(this_opt) {
- opt = simple_strtol( this_opt, NULL, 0 );
-
- /* Must be between 0 and 7 */
- if (opt >= 0 && opt <= 7)
- setup_hostid = opt;
- else if (opt > 7)
- printk( "mac_esp_setup: invalid host ID %ld !\n", opt);
-
- this_opt = strsep (&str, ",");
- }
-#ifdef SUPPORT_TAGS
- if(this_opt) {
- opt = simple_strtol( this_opt, NULL, 0 );
- if (opt >= 0)
- setup_use_tagged_queuing = !!opt;
- }
-#endif
-#endif
- return 1;
-}
-
-__setup("mac53c9x=", mac_esp_setup);
-
-
-/*
- * ESP address 'detection'
- */
-
-unsigned long get_base(int chip_num)
-{
- /*
- * using the chip_num and mac model, figure out where the
- * chips are mapped
- */
-
- unsigned long io_base = 0x50f00000;
- unsigned int second_offset = 0x402;
- unsigned long scsi_loc = 0;
-
- switch (macintosh_config->scsi_type) {
-
- /* 950, 900, 700 */
- case MAC_SCSI_QUADRA2:
- scsi_loc = io_base + 0xf000 + ((chip_num == 0) ? 0 : second_offset);
- break;
-
- /* av's */
- case MAC_SCSI_QUADRA3:
- scsi_loc = io_base + 0x18000 + ((chip_num == 0) ? 0 : second_offset);
- break;
-
- /* most quadra/centris models are like this */
- case MAC_SCSI_QUADRA:
- scsi_loc = io_base + 0x10000;
- break;
-
- default:
- printk("mac_esp: get_base: hit default!\n");
- scsi_loc = io_base + 0x10000;
- break;
-
- } /* switch */
-
- printk("mac_esp: io base at 0x%lx\n", scsi_loc);
-
- return scsi_loc;
-}
-
-/*
- * Model dependent ESP setup
- */
-
-int mac_esp_detect(struct scsi_host_template * tpnt)
-{
- int quick = 0;
- int chipnum, chipspresent = 0;
-#if 0
- unsigned long timeout;
-#endif
-
- if (esp_initialized > 0)
- return -ENODEV;
-
- /* what do we have in this machine... */
- if (MACHW_PRESENT(MAC_SCSI_96)) {
- chipspresent ++;
- }
-
- if (MACHW_PRESENT(MAC_SCSI_96_2)) {
- chipspresent ++;
- }
-
- /* number of ESPs present ? */
- if (setup_num_esps >= 0) {
- if (chipspresent >= setup_num_esps)
- chipspresent = setup_num_esps;
- else
- printk("mac_esp_detect: num_hosts detected %d setup %d \n",
- chipspresent, setup_num_esps);
- }
-
- /* TODO: add disconnect / nosync flags */
-
- /* setup variables */
- tpnt->can_queue =
- (setup_can_queue > 0) ? setup_can_queue : 7;
- tpnt->cmd_per_lun =
- (setup_cmd_per_lun > 0) ? setup_cmd_per_lun : 1;
- tpnt->sg_tablesize =
- (setup_sg_tablesize >= 0) ? setup_sg_tablesize : SG_ALL;
-
- if (setup_hostid >= 0)
- tpnt->this_id = setup_hostid;
- else {
- /* use 7 as default */
- tpnt->this_id = 7;
- }
-
-#ifdef SUPPORT_TAGS
- if (setup_use_tagged_queuing < 0)
- setup_use_tagged_queuing = DEFAULT_USE_TAGGED_QUEUING;
-#endif
-
- for (chipnum = 0; chipnum < chipspresent; chipnum ++) {
- struct NCR_ESP * esp;
-
- esp = esp_allocate(tpnt, NULL, 0);
- esp->eregs = (struct ESP_regs *) get_base(chipnum);
-
- esp->dma_irq_p = &esp_dafb_dma_irq_p;
- if (chipnum == 0) {
-
- if (macintosh_config->scsi_type == MAC_SCSI_QUADRA) {
- /* most machines except those below :-) */
- quick = 1;
- esp->dma_irq_p = &esp_iosb_dma_irq_p;
- } else if (macintosh_config->scsi_type == MAC_SCSI_QUADRA3) {
- /* mostly av's */
- quick = 0;
- } else {
- /* q950, 900, 700 */
- quick = 1;
- out_be32(0xf9800024, 0x1d1);
- esp->dregs = (void *) 0xf9800024;
- }
-
- } else { /* chipnum */
-
- quick = 1;
- out_be32(0xf9800028, 0x1d1);
- esp->dregs = (void *) 0xf9800028;
-
- } /* chipnum == 0 */
-
- /* use pio for command bytes; pio for message/data: TBI */
- esp->do_pio_cmds = 1;
-
- /* Set the command buffer */
- esp->esp_command = (volatile unsigned char*) cmd_buffer;
- esp->esp_command_dvma = (__u32) cmd_buffer;
-
- /* various functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = NULL;
- esp->dma_init_write = NULL;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
-
- esp->dma_ports_p = &dma_ports_p;
-
-
- /* Optional functions */
- esp->dma_barrier = NULL;
- esp->dma_drain = NULL;
- esp->dma_invalidate = NULL;
- esp->dma_irq_entry = NULL;
- esp->dma_irq_exit = NULL;
- esp->dma_led_on = NULL;
- esp->dma_led_off = NULL;
- esp->dma_poll = NULL;
- esp->dma_reset = NULL;
-
- /* SCSI chip speed */
- /* below esp->cfreq = 40000000; */
-
-
- if (quick) {
- /* 'quick' means there's handshake glue logic like in the 5380 case */
- esp->dma_setup = &dma_setup_quick;
- } else {
- esp->dma_setup = &dma_setup;
- }
-
- if (chipnum == 0) {
-
- esp->irq = IRQ_MAC_SCSI;
-
- request_irq(IRQ_MAC_SCSI, esp_intr, 0, "Mac ESP SCSI", esp->ehost);
-#if 0 /* conflicts with IOP ADB */
- request_irq(IRQ_MAC_SCSIDRQ, fake_drq, 0, "Mac ESP DRQ", esp->ehost);
-#endif
-
- if (macintosh_config->scsi_type == MAC_SCSI_QUADRA) {
- esp->cfreq = 16500000;
- } else {
- esp->cfreq = 25000000;
- }
-
-
- } else { /* chipnum == 1 */
-
- esp->irq = IRQ_MAC_SCSIDRQ;
-#if 0 /* conflicts with IOP ADB */
- request_irq(IRQ_MAC_SCSIDRQ, esp_intr, 0, "Mac ESP SCSI 2", esp->ehost);
-#endif
-
- esp->cfreq = 25000000;
-
- }
-
- if (quick) {
- printk("esp: using quick version\n");
- }
-
- printk("esp: addr at 0x%p\n", esp->eregs);
-
- esp->scsi_id = 7;
- esp->diff = 0;
-
- esp_initialize(esp);
-
- } /* for chipnum */
-
- if (chipspresent)
- printk("\nmac_esp: %d esp controllers found\n", chipspresent);
-
- esp_initialized = chipspresent;
-
- return chipspresent;
-}
-
-static int mac_esp_release(struct Scsi_Host *shost)
-{
- if (shost->irq)
- free_irq(shost->irq, NULL);
- if (shost->io_port && shost->n_io_port)
- release_region(shost->io_port, shost->n_io_port);
- scsi_unregister(shost);
- return 0;
-}
-
-/*
- * I've been wondering what this is supposed to do, for some time. Talking
- * to Allen Briggs: These machines have an extra register someplace where the
- * DRQ pin of the ESP can be monitored. That isn't useful for determining
- * anything else (such as reselect interrupt or other magic) though.
- * Maybe make the semantics should be changed like
- * if (esp->current_SC)
- * ... check DRQ flag ...
- * else
- * ... disconnected, check pending VIA interrupt ...
- *
- * There's a problem with using the dabf flag or mac_irq_pending() here: both
- * seem to return 1 even though no interrupt is currently pending, resulting
- * in esp_exec_cmd() holding off the next command, and possibly infinite loops
- * in esp_intr().
- * Short term fix: just use esp_status & ESP_STAT_INTR here, as long as we
- * use simple PIO. The DRQ status will be important when implementing pseudo
- * DMA mode (set up ESP transfer count, return, do a batch of bytes in PIO or
- * 'hardware handshake' mode upon DRQ).
- * If you plan on changing this (i.e. to save the esp_status register access in
- * favor of a VIA register access or a shadow register for the IFR), make sure
- * to try a debug version of this first to monitor what registers would be a good
- * indicator of the ESP interrupt.
- */
-
-static int esp_dafb_dma_irq_p(struct NCR_ESP * esp)
-{
- unsigned int ret;
- int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: esp_dafb_dma_irq_p dafb %d irq %d\n",
- readl(esp->dregs), mac_irq_pending(IRQ_MAC_SCSI));
-#endif
-
- sreg &= ESP_STAT_INTR;
-
- /*
- * maybe working; this is essentially what's used for iosb_dma_irq_p
- */
- if (sreg)
- return 1;
- else
- return 0;
-
- /*
- * didn't work ...
- */
-#if 0
- if (esp->current_SC)
- ret = readl(esp->dregs) & 0x200;
- else if (esp->disconnected_SC)
- ret = 1; /* sreg ?? */
- else
- ret = mac_irq_pending(IRQ_MAC_SCSI);
-
- return(ret);
-#endif
-
-}
-
-/*
- * See above: testing mac_irq_pending always returned 8 (SCSI IRQ) regardless
- * of the actual ESP status.
- */
-
-static int esp_iosb_dma_irq_p(struct NCR_ESP * esp)
-{
- int ret = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ);
- int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n",
- mac_irq_pending(IRQ_MAC_SCSIDRQ), mac_irq_pending(IRQ_MAC_SCSI),
- sreg, esp->current_SC, esp->disconnected_SC);
-#endif
-
- sreg &= ESP_STAT_INTR;
-
- if (sreg)
- return (sreg);
- else
- return 0;
-}
-
-/*
- * This seems to be OK for PIO at least ... usually 0 after PIO.
- */
-
-static int dma_bytes_sent(struct NCR_ESP * esp, int fifo_count)
-{
-
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma bytes sent = %x\n", fifo_count);
-#endif
-
- return fifo_count;
-}
-
-/*
- * dma_can_transfer is used to switch between DMA and PIO, if DMA (pseudo)
- * is ever implemented. Returning 0 here will use PIO.
- */
-
-static int dma_can_transfer(struct NCR_ESP * esp, Scsi_Cmnd * sp)
-{
- unsigned long sz = sp->SCp.this_residual;
-#if 0 /* no DMA yet; make conditional */
- if (sz > 0x10000000) {
- sz = 0x10000000;
- }
- printk("mac_esp: dma can transfer = 0lx%x\n", sz);
-#else
-
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: pio to transfer = %ld\n", sz);
-#endif
-
- sz = 0;
-#endif
- return sz;
-}
-
-/*
- * Not yet ...
- */
-
-static void dma_dump_state(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma_dump_state: called\n");
-#endif
-#if 0
- ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
- esp->esp_id, ((struct mac_dma_registers *)
- (esp->dregs))->cond_reg));
-#endif
-}
-
-/*
- * DMA setup: should be used to set up the ESP transfer count for pseudo
- * DMA transfers; need a DRQ transfer function to do the actual transfer
- */
-
-static void dma_init_read(struct NCR_ESP * esp, char * vaddress, int length)
-{
- printk("mac_esp: dma_init_read\n");
-}
-
-
-static void dma_init_write(struct NCR_ESP * esp, char * vaddress, int length)
-{
- printk("mac_esp: dma_init_write\n");
-}
-
-
-static void dma_ints_off(struct NCR_ESP * esp)
-{
- disable_irq(esp->irq);
-}
-
-
-static void dma_ints_on(struct NCR_ESP * esp)
-{
- enable_irq(esp->irq);
-}
-
-/*
- * generic dma_irq_p(), unused
- */
-
-static int dma_irq_p(struct NCR_ESP * esp)
-{
- int i = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma_irq_p status %d\n", i);
-#endif
-
- return (i & ESP_STAT_INTR);
-}
-
-static int dma_irq_p_quick(struct NCR_ESP * esp)
-{
- /*
- * Copied from iosb_dma_irq_p()
- */
- int ret = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ);
- int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n",
- mac_irq_pending(IRQ_MAC_SCSIDRQ), mac_irq_pending(IRQ_MAC_SCSI),
- sreg, esp->current_SC, esp->disconnected_SC);
-#endif
-
- sreg &= ESP_STAT_INTR;
-
- if (sreg)
- return (sreg);
- else
- return 0;
-
-}
-
-static void dma_led_off(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma_led_off: called\n");
-#endif
-}
-
-
-static void dma_led_on(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma_led_on: called\n");
-#endif
-}
-
-
-static int dma_ports_p(struct NCR_ESP * esp)
-{
- return 0;
-}
-
-
-static void dma_setup(struct NCR_ESP * esp, __u32 addr, int count, int write)
-{
-
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma_setup\n");
-#endif
-
- if (write) {
- dma_init_read(esp, (char *) addr, count);
- } else {
- dma_init_write(esp, (char *) addr, count);
- }
-}
-
-
-static void dma_setup_quick(struct NCR_ESP * esp, __u32 addr, int count, int write)
-{
-#ifdef DEBUG_MAC_ESP
- printk("mac_esp: dma_setup_quick\n");
-#endif
-}
-
-static struct scsi_host_template driver_template = {
- .proc_name = "mac_esp",
- .name = "Mac 53C9x SCSI",
- .detect = mac_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = mac_esp_release,
- .info = esp_info,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = DISABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/mca_53c9x.c b/drivers/scsi/mca_53c9x.c
deleted file mode 100644
index d693d0f..0000000
--- a/drivers/scsi/mca_53c9x.c
+++ /dev/null
@@ -1,520 +0,0 @@
-/* mca_53c9x.c: Driver for the SCSI adapter found on NCR 35xx
- * (and maybe some other) Microchannel machines
- *
- * Code taken mostly from Cyberstorm SCSI drivers
- * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
- *
- * Hacked to work with the NCR MCA stuff by Tymm Twillman (tymm@computer.org)
- *
- * The CyberStorm SCSI driver (and this driver) is based on David S. Miller's
- * ESP driver * for the Sparc computers.
- *
- * Special thanks to Ken Stewart at Symbios (LSI) for helping with info on
- * the 86C01. I was on the brink of going ga-ga...
- *
- * Also thanks to Jesper Skov for helping me with info on how the Amiga
- * does things...
- */
-
-/*
- * This is currently only set up to use one 53c9x card at a time; it could be
- * changed fairly easily to detect/use more than one, but I'm not too sure how
- * many cards that use the 53c9x on MCA systems there are (if, in fact, there
- * are cards that use them, other than the one built into some NCR systems)...
- * If anyone requests this, I'll throw it in, otherwise it's not worth the
- * effort.
- */
-
-/*
- * Info on the 86C01 MCA interface chip at the bottom, if you care enough to
- * look.
- */
-
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/mca.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/mca-legacy.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/dma.h>
-#include <asm/irq.h>
-#include <asm/mca_dma.h>
-#include <asm/pgtable.h>
-
-/*
- * From ibmmca.c (IBM scsi controller card driver) -- used for turning PS2 disk
- * activity LED on and off
- */
-
-#define PS2_SYS_CTR 0x92
-
-/* Ports the ncr's 53c94 can be put at; indexed by pos register value */
-
-#define MCA_53C9X_IO_PORTS { \
- 0x0000, 0x0240, 0x0340, 0x0400, \
- 0x0420, 0x3240, 0x8240, 0xA240, \
- }
-
-/*
- * Supposedly there were some cards put together with the 'c9x and 86c01. If
- * they have different ID's from the ones on the 3500 series machines,
- * you can add them here and hopefully things will work out.
- */
-
-#define MCA_53C9X_IDS { \
- 0x7F4C, \
- 0x0000, \
- }
-
-static int dma_bytes_sent(struct NCR_ESP *, int);
-static int dma_can_transfer(struct NCR_ESP *, Scsi_Cmnd *);
-static void dma_dump_state(struct NCR_ESP *);
-static void dma_init_read(struct NCR_ESP *, __u32, int);
-static void dma_init_write(struct NCR_ESP *, __u32, int);
-static void dma_ints_off(struct NCR_ESP *);
-static void dma_ints_on(struct NCR_ESP *);
-static int dma_irq_p(struct NCR_ESP *);
-static int dma_ports_p(struct NCR_ESP *);
-static void dma_setup(struct NCR_ESP *, __u32, int, int);
-static void dma_led_on(struct NCR_ESP *);
-static void dma_led_off(struct NCR_ESP *);
-
-/* This is where all commands are put before they are trasfered to the
- * 53c9x via PIO.
- */
-
-static volatile unsigned char cmd_buffer[16];
-
-/*
- * We keep the structure that is used to access the registers on the 53c9x
- * here.
- */
-
-static struct ESP_regs eregs;
-
-/***************************************************************** Detection */
-static int mca_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- static int io_port_by_pos[] = MCA_53C9X_IO_PORTS;
- int mca_53c9x_ids[] = MCA_53C9X_IDS;
- int *id_to_check = mca_53c9x_ids;
- int slot;
- int pos[3];
- unsigned int tmp_io_addr;
- unsigned char tmp_byte;
-
-
- if (!MCA_bus)
- return 0;
-
- while (*id_to_check) {
- if ((slot = mca_find_adapter(*id_to_check, 0)) !=
- MCA_NOTFOUND)
- {
- esp = esp_allocate(tpnt, NULL, 0);
-
- pos[0] = mca_read_stored_pos(slot, 2);
- pos[1] = mca_read_stored_pos(slot, 3);
- pos[2] = mca_read_stored_pos(slot, 4);
-
- esp->eregs = &eregs;
-
- /*
- * IO port base is given in the first (non-ID) pos
- * register, like so:
- *
- * Bits 3 2 1 IO base
- * ----------------------------
- * 0 0 0 <disabled>
- * 0 0 1 0x0240
- * 0 1 0 0x0340
- * 0 1 1 0x0400
- * 1 0 0 0x0420
- * 1 0 1 0x3240
- * 1 1 0 0x8240
- * 1 1 1 0xA240
- */
-
- tmp_io_addr =
- io_port_by_pos[(pos[0] & 0x0E) >> 1];
-
- esp->eregs->io_addr = tmp_io_addr + 0x10;
-
- if (esp->eregs->io_addr == 0x0000) {
- printk("Adapter is disabled.\n");
- break;
- }
-
- /*
- * IRQ is specified in bits 4 and 5:
- *
- * Bits 4 5 IRQ
- * -----------------------
- * 0 0 3
- * 0 1 5
- * 1 0 7
- * 1 1 9
- */
-
- esp->irq = ((pos[0] & 0x30) >> 3) + 3;
-
- /*
- * DMA channel is in the low 3 bits of the second
- * POS register
- */
-
- esp->dma = pos[1] & 7;
- esp->slot = slot;
-
- if (request_irq(esp->irq, esp_intr, 0,
- "NCR 53c9x SCSI", esp->ehost))
- {
- printk("Unable to request IRQ %d.\n", esp->irq);
- esp_deallocate(esp);
- scsi_unregister(esp->ehost);
- return 0;
- }
-
- if (request_dma(esp->dma, "NCR 53c9x SCSI")) {
- printk("Unable to request DMA channel %d.\n",
- esp->dma);
- free_irq(esp->irq, esp_intr);
- esp_deallocate(esp);
- scsi_unregister(esp->ehost);
- return 0;
- }
-
- request_region(tmp_io_addr, 32, "NCR 53c9x SCSI");
-
- /*
- * 86C01 handles DMA, IO mode, from address
- * (base + 0x0a)
- */
-
- mca_disable_dma(esp->dma);
- mca_set_dma_io(esp->dma, tmp_io_addr + 0x0a);
- mca_enable_dma(esp->dma);
-
- /* Tell the 86C01 to give us interrupts */
-
- tmp_byte = inb(tmp_io_addr + 0x02) | 0x40;
- outb(tmp_byte, tmp_io_addr + 0x02);
-
- /*
- * Scsi ID -- general purpose register, hi
- * 2 bits; add 4 to this number to get the
- * ID
- */
-
- esp->scsi_id = ((pos[2] & 0xC0) >> 6) + 4;
-
- /* Do command transfer with programmed I/O */
-
- esp->do_pio_cmds = 1;
-
- /* Required functions */
-
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
-
- esp->dma_barrier = NULL;
- esp->dma_drain = NULL;
- esp->dma_invalidate = NULL;
- esp->dma_irq_entry = NULL;
- esp->dma_irq_exit = NULL;
- esp->dma_led_on = dma_led_on;
- esp->dma_led_off = dma_led_off;
- esp->dma_poll = NULL;
- esp->dma_reset = NULL;
-
- /* Set the command buffer */
-
- esp->esp_command = (volatile unsigned char*)
- cmd_buffer;
- esp->esp_command_dvma = isa_virt_to_bus(cmd_buffer);
-
- /* SCSI chip speed */
-
- esp->cfreq = 25000000;
-
- /* Differential SCSI? I think not. */
-
- esp->diff = 0;
-
- esp_initialize(esp);
-
- printk(" Adapter found in slot %2d: io port 0x%x "
- "irq %d dma channel %d\n", slot + 1, tmp_io_addr,
- esp->irq, esp->dma);
-
- mca_set_adapter_name(slot, "NCR 53C9X SCSI Adapter");
- mca_mark_as_used(slot);
-
- break;
- }
-
- id_to_check++;
- }
-
- return esps_in_use;
-}
-
-
-/******************************************************************* Release */
-
-static int mca_esp_release(struct Scsi_Host *host)
-{
- struct NCR_ESP *esp = (struct NCR_ESP *)host->hostdata;
- unsigned char tmp_byte;
-
- esp_deallocate(esp);
- /*
- * Tell the 86C01 to stop sending interrupts
- */
-
- tmp_byte = inb(esp->eregs->io_addr - 0x0E);
- tmp_byte &= ~0x40;
- outb(tmp_byte, esp->eregs->io_addr - 0x0E);
-
- free_irq(esp->irq, esp_intr);
- free_dma(esp->dma);
-
- mca_mark_as_unused(esp->slot);
-
- return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- /* Ask the 53c9x. It knows. */
-
- return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- /*
- * The MCA dma channels can only do up to 128K bytes at a time.
- * (16 bit mode)
- */
-
- unsigned long sz = sp->SCp.this_residual;
- if(sz > 0x20000)
- sz = 0x20000;
- return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
- /*
- * Doesn't quite match up to the other drivers, but we do what we
- * can.
- */
-
- ESPLOG(("esp%d: dma channel <%d>\n", esp->esp_id, esp->dma));
- ESPLOG(("bytes left to dma: %d\n", mca_get_dma_residue(esp->dma)));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
- unsigned long flags;
-
-
- save_flags(flags);
- cli();
-
- mca_disable_dma(esp->dma);
- mca_set_dma_mode(esp->dma, MCA_DMA_MODE_XFER | MCA_DMA_MODE_16 |
- MCA_DMA_MODE_IO);
- mca_set_dma_addr(esp->dma, addr);
- mca_set_dma_count(esp->dma, length / 2); /* !!! */
- mca_enable_dma(esp->dma);
-
- restore_flags(flags);
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
- unsigned long flags;
-
-
- save_flags(flags);
- cli();
-
- mca_disable_dma(esp->dma);
- mca_set_dma_mode(esp->dma, MCA_DMA_MODE_XFER | MCA_DMA_MODE_WRITE |
- MCA_DMA_MODE_16 | MCA_DMA_MODE_IO);
- mca_set_dma_addr(esp->dma, addr);
- mca_set_dma_count(esp->dma, length / 2); /* !!! */
- mca_enable_dma(esp->dma);
-
- restore_flags(flags);
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- /*
- * Tell the 'C01 to shut up. All interrupts are routed through it.
- */
-
- outb(inb(esp->eregs->io_addr - 0x0E) & ~0x40,
- esp->eregs->io_addr - 0x0E);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- /*
- * Ok. You can speak again.
- */
-
- outb(inb(esp->eregs->io_addr - 0x0E) | 0x40,
- esp->eregs->io_addr - 0x0E);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- /*
- * DaveM says that this should return a "yes" if there is an interrupt
- * or a DMA error occurred. I copied the Amiga driver's semantics,
- * though, because it seems to work and we can't really tell if
- * a DMA error happened. This gives the "yes" if the scsi chip
- * is sending an interrupt and no DMA activity is taking place
- */
-
- return (!(inb(esp->eregs->io_addr - 0x04) & 1) &&
- !(inb(esp->eregs->io_addr - 0x04) & 2) );
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- /*
- * Check to see if interrupts are enabled on the 'C01 (in case abort
- * is entered multiple times, so we only do the abort once)
- */
-
- return (inb(esp->eregs->io_addr - 0x0E) & 0x40) ? 1:0;
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
- if(write){
- dma_init_write(esp, addr, count);
- } else {
- dma_init_read(esp, addr, count);
- }
-}
-
-/*
- * These will not play nicely with other disk controllers that try to use the
- * disk active LED... but what can you do? Don't answer that.
- *
- * Stolen shamelessly from ibmmca.c -- IBM Microchannel SCSI adapter driver
- *
- */
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
- outb(inb(PS2_SYS_CTR) | 0xc0, PS2_SYS_CTR);
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
- outb(inb(PS2_SYS_CTR) & 0x3f, PS2_SYS_CTR);
-}
-
-static struct scsi_host_template driver_template = {
- .proc_name = "mca_53c9x",
- .name = "NCR 53c9x SCSI",
- .detect = mca_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = mca_esp_release,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .unchecked_isa_dma = 1,
- .use_clustering = DISABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-/*
- * OK, here's the goods I promised. The NCR 86C01 is an MCA interface chip
- * that handles enabling/diabling IRQ, dma interfacing, IO port selection
- * and other fun stuff. It takes up 16 addresses, and the chip it is
- * connnected to gets the following 16. Registers are as follows:
- *
- * Offsets 0-1 : Card ID
- *
- * Offset 2 : Mode enable register --
- * Bit 7 : Data Word width (1 = 16, 0 = 8)
- * Bit 6 : IRQ enable (1 = enabled)
- * Bits 5,4 : IRQ select
- * 0 0 : IRQ 3
- * 0 1 : IRQ 5
- * 1 0 : IRQ 7
- * 1 1 : IRQ 9
- * Bits 3-1 : Base Address
- * 0 0 0 : <disabled>
- * 0 0 1 : 0x0240
- * 0 1 0 : 0x0340
- * 0 1 1 : 0x0400
- * 1 0 0 : 0x0420
- * 1 0 1 : 0x3240
- * 1 1 0 : 0x8240
- * 1 1 1 : 0xA240
- * Bit 0 : Card enable (1 = enabled)
- *
- * Offset 3 : DMA control register --
- * Bit 7 : DMA enable (1 = enabled)
- * Bits 6,5 : Preemt Count Select (transfers to complete after
- * 'C01 has been preempted on MCA bus)
- * 0 0 : 0
- * 0 1 : 1
- * 1 0 : 3
- * 1 1 : 7
- * (all these wacky numbers; I'm sure there's a reason somewhere)
- * Bit 4 : Fairness enable (1 = fair bus priority)
- * Bits 3-0 : Arbitration level (0-15 consecutive)
- *
- * Offset 4 : General purpose register
- * Bits 7-3 : User definable (here, 7,6 are SCSI ID)
- * Bits 2-0 : reserved
- *
- * Offset 10 : DMA decode register (used for IO based DMA; also can do
- * PIO through this port)
- *
- * Offset 12 : Status
- * Bits 7-2 : reserved
- * Bit 1 : DMA pending (1 = pending)
- * Bit 0 : IRQ pending (0 = pending)
- *
- * Exciting, huh?
- *
- */
diff --git a/drivers/scsi/oktagon_esp.c b/drivers/scsi/oktagon_esp.c
deleted file mode 100644
index 8e5eadb..0000000
--- a/drivers/scsi/oktagon_esp.c
+++ /dev/null
@@ -1,606 +0,0 @@
-/*
- * Oktagon_esp.c -- Driver for bsc Oktagon
- *
- * Written by Carsten Pluntke 1998
- *
- * Based on cyber_esp.c
- */
-
-
-#if defined(CONFIG_AMIGA) || defined(CONFIG_APUS)
-#define USE_BOTTOM_HALF
-#endif
-
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/reboot.h>
-#include <asm/system.h>
-#include <asm/ptrace.h>
-#include <asm/pgtable.h>
-
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#ifdef USE_BOTTOM_HALF
-#include <linux/workqueue.h>
-#include <linux/interrupt.h>
-#endif
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define OKTAGON_ESP_ADDR 0x03000
-#define OKTAGON_DMA_ADDR 0x01000
-
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int dma_irq_p(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static void dma_irq_exit(struct NCR_ESP *esp);
-static void dma_invalidate(struct NCR_ESP *esp);
-
-static void dma_mmu_get_scsi_one(struct NCR_ESP *,Scsi_Cmnd *);
-static void dma_mmu_get_scsi_sgl(struct NCR_ESP *,Scsi_Cmnd *);
-static void dma_mmu_release_scsi_one(struct NCR_ESP *,Scsi_Cmnd *);
-static void dma_mmu_release_scsi_sgl(struct NCR_ESP *,Scsi_Cmnd *);
-static void dma_advance_sg(Scsi_Cmnd *);
-static int oktagon_notify_reboot(struct notifier_block *this, unsigned long code, void *x);
-
-#ifdef USE_BOTTOM_HALF
-static void dma_commit(struct work_struct *unused);
-
-long oktag_to_io(long *paddr, long *addr, long len);
-long oktag_from_io(long *addr, long *paddr, long len);
-
-static DECLARE_WORK(tq_fake_dma, dma_commit);
-
-#define DMA_MAXTRANSFER 0x8000
-
-#else
-
-/*
- * No bottom half. Use transfer directly from IRQ. Find a narrow path
- * between too much IRQ overhead and clogging the IRQ for too long.
- */
-
-#define DMA_MAXTRANSFER 0x1000
-
-#endif
-
-static struct notifier_block oktagon_notifier = {
- oktagon_notify_reboot,
- NULL,
- 0
-};
-
-static long *paddress;
-static long *address;
-static long len;
-static long dma_on;
-static int direction;
-static struct NCR_ESP *current_esp;
-
-
-static volatile unsigned char cmd_buffer[16];
- /* This is where all commands are put
- * before they are trasfered to the ESP chip
- * via PIO.
- */
-
-/***************************************************************** Detection */
-int oktagon_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- struct zorro_dev *z = NULL;
- unsigned long address;
- struct ESP_regs *eregs;
-
- while ((z = zorro_find_device(ZORRO_PROD_BSC_OKTAGON_2008, z))) {
- unsigned long board = z->resource.start;
- if (request_mem_region(board+OKTAGON_ESP_ADDR,
- sizeof(struct ESP_regs), "NCR53C9x")) {
- /*
- * It is a SCSI controller.
- * Hardwire Host adapter to SCSI ID 7
- */
-
- address = (unsigned long)ZTWO_VADDR(board);
- eregs = (struct ESP_regs *)(address + OKTAGON_ESP_ADDR);
-
- /* This line was 5 lines lower */
- esp = esp_allocate(tpnt, (void *)board + OKTAGON_ESP_ADDR, 0);
-
- /* we have to shift the registers only one bit for oktagon */
- esp->shift = 1;
-
- esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
- udelay(5);
- if (esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7))
- return 0; /* Bail out if address did not hold data */
-
- /* Do command transfer with programmed I/O */
- esp->do_pio_cmds = 1;
-
- /* Required functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
- esp->dma_barrier = 0;
- esp->dma_drain = 0;
- esp->dma_invalidate = &dma_invalidate;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = &dma_irq_exit;
- esp->dma_led_on = &dma_led_on;
- esp->dma_led_off = &dma_led_off;
- esp->dma_poll = 0;
- esp->dma_reset = 0;
-
- esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one;
- esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl;
- esp->dma_mmu_release_scsi_one = &dma_mmu_release_scsi_one;
- esp->dma_mmu_release_scsi_sgl = &dma_mmu_release_scsi_sgl;
- esp->dma_advance_sg = &dma_advance_sg;
-
- /* SCSI chip speed */
- /* Looking at the quartz of the SCSI board... */
- esp->cfreq = 25000000;
-
- /* The DMA registers on the CyberStorm are mapped
- * relative to the device (i.e. in the same Zorro
- * I/O block).
- */
- esp->dregs = (void *)(address + OKTAGON_DMA_ADDR);
-
- paddress = (long *) esp->dregs;
-
- /* ESP register base */
- esp->eregs = eregs;
-
- /* Set the command buffer */
- esp->esp_command = (volatile unsigned char*) cmd_buffer;
-
- /* Yes, the virtual address. See below. */
- esp->esp_command_dvma = (__u32) cmd_buffer;
-
- esp->irq = IRQ_AMIGA_PORTS;
- request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
- "BSC Oktagon SCSI", esp->ehost);
-
- /* Figure out our scsi ID on the bus */
- esp->scsi_id = 7;
-
- /* We don't have a differential SCSI-bus. */
- esp->diff = 0;
-
- esp_initialize(esp);
-
- printk("ESP_Oktagon Driver 1.1"
-#ifdef USE_BOTTOM_HALF
- " [BOTTOM_HALF]"
-#else
- " [IRQ]"
-#endif
- " registered.\n");
- printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps,esps_in_use);
- esps_running = esps_in_use;
- current_esp = esp;
- register_reboot_notifier(&oktagon_notifier);
- return esps_in_use;
- }
- }
- return 0;
-}
-
-
-/*
- * On certain configurations the SCSI equipment gets confused on reboot,
- * so we have to reset it then.
- */
-
-static int
-oktagon_notify_reboot(struct notifier_block *this, unsigned long code, void *x)
-{
- struct NCR_ESP *esp;
-
- if((code == SYS_DOWN || code == SYS_HALT) && (esp = current_esp))
- {
- esp_bootup_reset(esp,esp->eregs);
- udelay(500); /* Settle time. Maybe unnecessary. */
- }
- return NOTIFY_DONE;
-}
-
-
-
-#ifdef USE_BOTTOM_HALF
-
-
-/*
- * The bsc Oktagon controller has no real DMA, so we have to do the 'DMA
- * transfer' in the interrupt (Yikes!) or use a bottom half to not to clutter
- * IRQ's for longer-than-good.
- *
- * FIXME
- * BIG PROBLEM: 'len' is usually the buffer length, not the expected length
- * of the data. So DMA may finish prematurely, further reads lead to
- * 'machine check' on APUS systems (don't know about m68k systems, AmigaOS
- * deliberately ignores the bus faults) and a normal copy-loop can't
- * be exited prematurely just at the right moment by the dma_invalidate IRQ.
- * So do it the hard way, write an own copier in assembler and
- * catch the exception.
- * -- Carsten
- */
-
-
-static void dma_commit(struct work_struct *unused)
-{
- long wait,len2,pos;
- struct NCR_ESP *esp;
-
- ESPDATA(("Transfer: %ld bytes, Address 0x%08lX, Direction: %d\n",
- len,(long) address,direction));
- dma_ints_off(current_esp);
-
- pos = 0;
- wait = 1;
- if(direction) /* write? (memory to device) */
- {
- while(len > 0)
- {
- len2 = oktag_to_io(paddress, address+pos, len);
- if(!len2)
- {
- if(wait > 1000)
- {
- printk("Expedited DMA exit (writing) %ld\n",len);
- break;
- }
- mdelay(wait);
- wait *= 2;
- }
- pos += len2;
- len -= len2*sizeof(long);
- }
- } else {
- while(len > 0)
- {
- len2 = oktag_from_io(address+pos, paddress, len);
- if(!len2)
- {
- if(wait > 1000)
- {
- printk("Expedited DMA exit (reading) %ld\n",len);
- break;
- }
- mdelay(wait);
- wait *= 2;
- }
- pos += len2;
- len -= len2*sizeof(long);
- }
- }
-
- /* to make esp->shift work */
- esp=current_esp;
-
-#if 0
- len2 = (esp_read(current_esp->eregs->esp_tclow) & 0xff) |
- ((esp_read(current_esp->eregs->esp_tcmed) & 0xff) << 8);
-
- /*
- * Uh uh. If you see this, len and transfer count registers were out of
- * sync. That means really serious trouble.
- */
-
- if(len2)
- printk("Eeeek!! Transfer count still %ld!\n",len2);
-#endif
-
- /*
- * Normally we just need to exit and wait for the interrupt to come.
- * But at least one device (my Microtek ScanMaker 630) regularly mis-
- * calculates the bytes it should send which is really ugly because
- * it locks up the SCSI bus if not accounted for.
- */
-
- if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR))
- {
- long len = 100;
- long trash[10];
-
- /*
- * Interrupt bit was not set. Either the device is just plain lazy
- * so we give it a 10 ms chance or...
- */
- while(len-- && (!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR)))
- udelay(100);
-
-
- if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR))
- {
- /*
- * So we think that the transfer count is out of sync. Since we
- * have all we want we are happy and can ditch the trash.
- */
-
- len = DMA_MAXTRANSFER;
-
- while(len-- && (!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR)))
- oktag_from_io(trash,paddress,2);
-
- if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR))
- {
- /*
- * Things really have gone wrong. If we leave the system in that
- * state, the SCSI bus is locked forever. I hope that this will
- * turn the system in a more or less running state.
- */
- printk("Device is bolixed, trying bus reset...\n");
- esp_bootup_reset(current_esp,current_esp->eregs);
- }
- }
- }
-
- ESPDATA(("Transfer_finale: do_data_finale should come\n"));
-
- len = 0;
- dma_on = 0;
- dma_ints_on(current_esp);
-}
-
-#endif
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- /* Since the CyberStorm DMA is fully dedicated to the ESP chip,
- * the number of bytes sent (to the ESP chip) equals the number
- * of bytes in the FIFO - there is no buffering in the DMA controller.
- * XXXX Do I read this right? It is from host to ESP, right?
- */
- return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- unsigned long sz = sp->SCp.this_residual;
- if(sz > DMA_MAXTRANSFER)
- sz = DMA_MAXTRANSFER;
- return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-}
-
-/*
- * What the f$@& is this?
- *
- * Some SCSI devices (like my Microtek ScanMaker 630 scanner) want to transfer
- * more data than requested. How much? Dunno. So ditch the bogus data into
- * the sink, hoping the device will advance to the next phase sooner or later.
- *
- * -- Carsten
- */
-
-static long oktag_eva_buffer[16]; /* The data sink */
-
-static void oktag_check_dma(void)
-{
- struct NCR_ESP *esp;
-
- esp=current_esp;
- if(!len)
- {
- address = oktag_eva_buffer;
- len = 2;
- /* esp_do_data sets them to zero like len */
- esp_write(current_esp->eregs->esp_tclow,2);
- esp_write(current_esp->eregs->esp_tcmed,0);
- }
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length)
-{
- /* Zorro is noncached, everything else done using processor. */
- /* cache_clear(addr, length); */
-
- if(dma_on)
- panic("dma_init_read while dma process is initialized/running!\n");
- direction = 0;
- address = (long *) vaddress;
- current_esp = esp;
- len = length;
- oktag_check_dma();
- dma_on = 1;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length)
-{
- /* cache_push(addr, length); */
-
- if(dma_on)
- panic("dma_init_write while dma process is initialized/running!\n");
- direction = 1;
- address = (long *) vaddress;
- current_esp = esp;
- len = length;
- oktag_check_dma();
- dma_on = 1;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- /* It's important to check the DMA IRQ bit in the correct way! */
- return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR);
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
- /* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
- * so when (write) is true, it actually means READ!
- */
- if(write){
- dma_init_read(esp, addr, count);
- } else {
- dma_init_write(esp, addr, count);
- }
-}
-
-/*
- * IRQ entry when DMA transfer is ready to be started
- */
-
-static void dma_irq_exit(struct NCR_ESP *esp)
-{
-#ifdef USE_BOTTOM_HALF
- if(dma_on)
- {
- schedule_work(&tq_fake_dma);
- }
-#else
- while(len && !dma_irq_p(esp))
- {
- if(direction)
- *paddress = *address++;
- else
- *address++ = *paddress;
- len -= (sizeof(long));
- }
- len = 0;
- dma_on = 0;
-#endif
-}
-
-/*
- * IRQ entry when DMA has just finished
- */
-
-static void dma_invalidate(struct NCR_ESP *esp)
-{
-}
-
-/*
- * Since the processor does the data transfer we have to use the custom
- * mmu interface to pass the virtual address, not the physical.
- */
-
-void dma_mmu_get_scsi_one(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- sp->SCp.ptr =
- sp->request_buffer;
-}
-
-void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- sp->SCp.ptr = sg_virt(sp->SCp.buffer);
-}
-
-void dma_mmu_release_scsi_one(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-}
-
-void dma_mmu_release_scsi_sgl(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-}
-
-void dma_advance_sg(Scsi_Cmnd *sp)
-{
- sp->SCp.ptr = sg_virt(sp->SCp.buffer);
-}
-
-
-#define HOSTS_C
-
-int oktagon_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
- unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
- esp_release();
- release_mem_region(address, sizeof(struct ESP_regs));
- free_irq(IRQ_AMIGA_PORTS, esp_intr);
- unregister_reboot_notifier(&oktagon_notifier);
-#endif
- return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
- .proc_name = "esp-oktagon",
- .proc_info = &esp_proc_info,
- .name = "BSC Oktagon SCSI",
- .detect = oktagon_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = oktagon_esp_release,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/oktagon_io.S b/drivers/scsi/oktagon_io.S
deleted file mode 100644
index 8a7340b..0000000
--- a/drivers/scsi/oktagon_io.S
+++ /dev/null
@@ -1,194 +0,0 @@
-/* -*- mode: asm -*-
- * Due to problems while transferring data I've put these routines as assembly
- * code.
- * Since I'm no PPC assembler guru, the code is just the assembler version of
-
-int oktag_to_io(long *paddr,long *addr,long len)
-{
- long *addr2 = addr;
- for(len=(len+sizeof(long)-1)/sizeof(long);len--;)
- *paddr = *addr2++;
- return addr2 - addr;
-}
-
-int oktag_from_io(long *addr,long *paddr,long len)
-{
- long *addr2 = addr;
- for(len=(len+sizeof(long)-1)/sizeof(long);len--;)
- *addr2++ = *paddr;
- return addr2 - addr;
-}
-
- * assembled using gcc -O2 -S, with two exception catch points where data
- * is moved to/from the IO register.
- */
-
-
-#ifdef CONFIG_APUS
-
- .file "oktagon_io.c"
-
-gcc2_compiled.:
-/*
- .section ".text"
-*/
- .align 2
- .globl oktag_to_io
- .type oktag_to_io,@function
-oktag_to_io:
- addi 5,5,3
- srwi 5,5,2
- cmpwi 1,5,0
- mr 9,3
- mr 3,4
- addi 5,5,-1
- bc 12,6,.L3
-.L5:
- cmpwi 1,5,0
- lwz 0,0(3)
- addi 3,3,4
- addi 5,5,-1
-exp1: stw 0,0(9)
- bc 4,6,.L5
-.L3:
-ret1: subf 3,4,3
- srawi 3,3,2
- blr
-.Lfe1:
- .size oktag_to_io,.Lfe1-oktag_to_io
- .align 2
- .globl oktag_from_io
- .type oktag_from_io,@function
-oktag_from_io:
- addi 5,5,3
- srwi 5,5,2
- cmpwi 1,5,0
- mr 9,3
- addi 5,5,-1
- bc 12,6,.L9
-.L11:
- cmpwi 1,5,0
-exp2: lwz 0,0(4)
- addi 5,5,-1
- stw 0,0(3)
- addi 3,3,4
- bc 4,6,.L11
-.L9:
-ret2: subf 3,9,3
- srawi 3,3,2
- blr
-.Lfe2:
- .size oktag_from_io,.Lfe2-oktag_from_io
- .ident "GCC: (GNU) egcs-2.90.29 980515 (egcs-1.0.3 release)"
-
-/*
- * Exception table.
- * Second longword shows where to jump when an exception at the addr the first
- * longword is pointing to is caught.
- */
-
-.section __ex_table,"a"
- .align 2
-oktagon_except:
- .long exp1,ret1
- .long exp2,ret2
-
-#else
-
-/*
-The code which follows is for 680x0 based assembler and is meant for
-Linux/m68k. It was created by cross compiling the code using the
-instructions given above. I then added the four labels used in the
-exception handler table at the bottom of this file.
-- Kevin <kcozens@interlog.com>
-*/
-
-#ifdef CONFIG_AMIGA
-
- .file "oktagon_io.c"
- .version "01.01"
-gcc2_compiled.:
-.text
- .align 2
-.globl oktag_to_io
- .type oktag_to_io,@function
-oktag_to_io:
- link.w %a6,#0
- move.l %d2,-(%sp)
- move.l 8(%a6),%a1
- move.l 12(%a6),%d1
- move.l %d1,%a0
- move.l 16(%a6),%d0
- addq.l #3,%d0
- lsr.l #2,%d0
- subq.l #1,%d0
- moveq.l #-1,%d2
- cmp.l %d0,%d2
- jbeq .L3
-.L5:
-exp1:
- move.l (%a0)+,(%a1)
- dbra %d0,.L5
- clr.w %d0
- subq.l #1,%d0
- jbcc .L5
-.L3:
-ret1:
- move.l %a0,%d0
- sub.l %d1,%d0
- asr.l #2,%d0
- move.l -4(%a6),%d2
- unlk %a6
- rts
-
-.Lfe1:
- .size oktag_to_io,.Lfe1-oktag_to_io
- .align 2
-.globl oktag_from_io
- .type oktag_from_io,@function
-oktag_from_io:
- link.w %a6,#0
- move.l %d2,-(%sp)
- move.l 8(%a6),%d1
- move.l 12(%a6),%a1
- move.l %d1,%a0
- move.l 16(%a6),%d0
- addq.l #3,%d0
- lsr.l #2,%d0
- subq.l #1,%d0
- moveq.l #-1,%d2
- cmp.l %d0,%d2
- jbeq .L9
-.L11:
-exp2:
- move.l (%a1),(%a0)+
- dbra %d0,.L11
- clr.w %d0
- subq.l #1,%d0
- jbcc .L11
-.L9:
-ret2:
- move.l %a0,%d0
- sub.l %d1,%d0
- asr.l #2,%d0
- move.l -4(%a6),%d2
- unlk %a6
- rts
-.Lfe2:
- .size oktag_from_io,.Lfe2-oktag_from_io
- .ident "GCC: (GNU) 2.7.2.1"
-
-/*
- * Exception table.
- * Second longword shows where to jump when an exception at the addr the first
- * longword is pointing to is caught.
- */
-
-.section __ex_table,"a"
- .align 2
-oktagon_except:
- .long exp1,ret1
- .long exp2,ret2
-
-#endif
-#endif
diff --git a/drivers/scsi/sun3x_esp.c b/drivers/scsi/sun3x_esp.c
deleted file mode 100644
index 1bc4190..0000000
--- a/drivers/scsi/sun3x_esp.c
+++ /dev/null
@@ -1,392 +0,0 @@
-/* sun3x_esp.c: EnhancedScsiProcessor Sun3x SCSI driver code.
- *
- * (C) 1999 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
- *
- * Based on David S. Miller's esp driver
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/sun3x.h>
-#include <asm/dvma.h>
-#include <asm/irq.h>
-
-static void dma_barrier(struct NCR_ESP *esp);
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_drain(struct NCR_ESP *esp);
-static void dma_invalidate(struct NCR_ESP *esp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int dma_irq_p(struct NCR_ESP *esp);
-static void dma_poll(struct NCR_ESP *esp, unsigned char *vaddr);
-static int dma_ports_p(struct NCR_ESP *esp);
-static void dma_reset(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-static void dma_mmu_get_scsi_one (struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_mmu_get_scsi_sgl (struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_mmu_release_scsi_one (struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_mmu_release_scsi_sgl (struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_advance_sg (Scsi_Cmnd *sp);
-
-/* Detecting ESP chips on the machine. This is the simple and easy
- * version.
- */
-int sun3x_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- struct ConfigDev *esp_dev;
-
- esp_dev = 0;
- esp = esp_allocate(tpnt, esp_dev, 0);
-
- /* Do command transfer with DMA */
- esp->do_pio_cmds = 0;
-
- /* Required functions */
- esp->dma_bytes_sent = &dma_bytes_sent;
- esp->dma_can_transfer = &dma_can_transfer;
- esp->dma_dump_state = &dma_dump_state;
- esp->dma_init_read = &dma_init_read;
- esp->dma_init_write = &dma_init_write;
- esp->dma_ints_off = &dma_ints_off;
- esp->dma_ints_on = &dma_ints_on;
- esp->dma_irq_p = &dma_irq_p;
- esp->dma_ports_p = &dma_ports_p;
- esp->dma_setup = &dma_setup;
-
- /* Optional functions */
- esp->dma_barrier = &dma_barrier;
- esp->dma_invalidate = &dma_invalidate;
- esp->dma_drain = &dma_drain;
- esp->dma_irq_entry = 0;
- esp->dma_irq_exit = 0;
- esp->dma_led_on = 0;
- esp->dma_led_off = 0;
- esp->dma_poll = &dma_poll;
- esp->dma_reset = &dma_reset;
-
- /* virtual DMA functions */
- esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one;
- esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl;
- esp->dma_mmu_release_scsi_one = &dma_mmu_release_scsi_one;
- esp->dma_mmu_release_scsi_sgl = &dma_mmu_release_scsi_sgl;
- esp->dma_advance_sg = &dma_advance_sg;
-
- /* SCSI chip speed */
- esp->cfreq = 20000000;
- esp->eregs = (struct ESP_regs *)(SUN3X_ESP_BASE);
- esp->dregs = (void *)SUN3X_ESP_DMA;
-
- esp->esp_command = (volatile unsigned char *)dvma_malloc(DVMA_PAGE_SIZE);
- esp->esp_command_dvma = dvma_vtob((unsigned long)esp->esp_command);
-
- esp->irq = 2;
- if (request_irq(esp->irq, esp_intr, IRQF_DISABLED,
- "SUN3X SCSI", esp->ehost)) {
- esp_deallocate(esp);
- return 0;
- }
-
- esp->scsi_id = 7;
- esp->diff = 0;
-
- esp_initialize(esp);
-
- /* for reasons beyond my knowledge (and which should likely be fixed)
- sync mode doesn't work on a 3/80 at 5mhz. but it does at 4. */
- esp->sync_defp = 0x3f;
-
- printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps,
- esps_in_use);
- esps_running = esps_in_use;
- return esps_in_use;
-}
-
-static void dma_do_drain(struct NCR_ESP *esp)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
-
- int count = 500000;
-
- while((dregs->cond_reg & DMA_PEND_READ) && (--count > 0))
- udelay(1);
-
- if(!count) {
- printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
- }
-
- dregs->cond_reg |= DMA_FIFO_STDRAIN;
-
- count = 500000;
-
- while((dregs->cond_reg & DMA_FIFO_ISDRAIN) && (--count > 0))
- udelay(1);
-
- if(!count) {
- printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
- }
-
-}
-
-static void dma_barrier(struct NCR_ESP *esp)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
- int count = 500000;
-
- while((dregs->cond_reg & DMA_PEND_READ) && (--count > 0))
- udelay(1);
-
- if(!count) {
- printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
- }
-
- dregs->cond_reg &= ~(DMA_ENABLE);
-}
-
-/* This uses various DMA csr fields and the fifo flags count value to
- * determine how many bytes were successfully sent/received by the ESP.
- */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
-
- int rval = dregs->st_addr - esp->esp_command_dvma;
-
- return rval - fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- return sp->SCp.this_residual;
-}
-
-static void dma_drain(struct NCR_ESP *esp)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
- int count = 500000;
-
- if(dregs->cond_reg & DMA_FIFO_ISDRAIN) {
- dregs->cond_reg |= DMA_FIFO_STDRAIN;
- while((dregs->cond_reg & DMA_FIFO_ISDRAIN) && (--count > 0))
- udelay(1);
- if(!count) {
- printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
- }
-
- }
-}
-
-static void dma_invalidate(struct NCR_ESP *esp)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
-
- __u32 tmp;
- int count = 500000;
-
- while(((tmp = dregs->cond_reg) & DMA_PEND_READ) && (--count > 0))
- udelay(1);
-
- if(!count) {
- printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
- }
-
- dregs->cond_reg = tmp | DMA_FIFO_INV;
- dregs->cond_reg &= ~DMA_FIFO_INV;
-
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
-
- ESPLOG(("esp%d: dma -- cond_reg<%08lx> addr<%08lx>\n",
- esp->esp_id, dregs->cond_reg, dregs->st_addr));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
-
- dregs->st_addr = vaddress;
- dregs->cond_reg |= (DMA_ST_WRITE | DMA_ENABLE);
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
-
- /* Set up the DMA counters */
-
- dregs->st_addr = vaddress;
- dregs->cond_reg = ((dregs->cond_reg & ~(DMA_ST_WRITE)) | DMA_ENABLE);
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
- DMA_INTSOFF((struct sparc_dma_registers *) esp->dregs);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
- DMA_INTSON((struct sparc_dma_registers *) esp->dregs);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- return DMA_IRQ_P((struct sparc_dma_registers *) esp->dregs);
-}
-
-static void dma_poll(struct NCR_ESP *esp, unsigned char *vaddr)
-{
- int count = 50;
- dma_do_drain(esp);
-
- /* Wait till the first bits settle. */
- while((*(volatile unsigned char *)vaddr == 0xff) && (--count > 0))
- udelay(1);
-
- if(!count) {
-// printk("%s:%d timeout expire (data %02x)\n", __FILE__, __LINE__,
-// esp_read(esp->eregs->esp_fdata));
- //mach_halt();
- vaddr[0] = esp_read(esp->eregs->esp_fdata);
- vaddr[1] = esp_read(esp->eregs->esp_fdata);
- }
-
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
- return (((struct sparc_dma_registers *) esp->dregs)->cond_reg
- & DMA_INT_ENAB);
-}
-
-/* Resetting various pieces of the ESP scsi driver chipset/buses. */
-static void dma_reset(struct NCR_ESP *esp)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *)esp->dregs;
-
- /* Punt the DVMA into a known state. */
- dregs->cond_reg |= DMA_RST_SCSI;
- dregs->cond_reg &= ~(DMA_RST_SCSI);
- DMA_INTSON(dregs);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
- struct sparc_dma_registers *dregs =
- (struct sparc_dma_registers *) esp->dregs;
- unsigned long nreg = dregs->cond_reg;
-
-// printk("dma_setup %c addr %08x cnt %08x\n",
-// write ? 'W' : 'R', addr, count);
-
- dma_do_drain(esp);
-
- if(write)
- nreg |= DMA_ST_WRITE;
- else {
- nreg &= ~(DMA_ST_WRITE);
- }
-
- nreg |= DMA_ENABLE;
- dregs->cond_reg = nreg;
- dregs->st_addr = addr;
-}
-
-static void dma_mmu_get_scsi_one (struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- sp->SCp.have_data_in = dvma_map((unsigned long)sp->SCp.buffer,
- sp->SCp.this_residual);
- sp->SCp.ptr = (char *)((unsigned long)sp->SCp.have_data_in);
-}
-
-static void dma_mmu_get_scsi_sgl (struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- int sz = sp->SCp.buffers_residual;
- struct scatterlist *sg = sp->SCp.buffer;
-
- while (sz >= 0) {
- sg[sz].dma_address = dvma_map((unsigned long)sg_virt(&sg[sz]),
- sg[sz].length);
- sz--;
- }
- sp->SCp.ptr=(char *)((unsigned long)sp->SCp.buffer->dma_address);
-}
-
-static void dma_mmu_release_scsi_one (struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- dvma_unmap((char *)sp->SCp.have_data_in);
-}
-
-static void dma_mmu_release_scsi_sgl (struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
- int sz = sp->use_sg - 1;
- struct scatterlist *sg = (struct scatterlist *)sp->request_buffer;
-
- while(sz >= 0) {
- dvma_unmap((char *)sg[sz].dma_address);
- sz--;
- }
-}
-
-static void dma_advance_sg (Scsi_Cmnd *sp)
-{
- sp->SCp.ptr = (char *)((unsigned long)sp->SCp.buffer->dma_address);
-}
-
-static int sun3x_esp_release(struct Scsi_Host *instance)
-{
- /* this code does not support being compiled as a module */
- return 1;
-
-}
-
-static struct scsi_host_template driver_template = {
- .proc_name = "sun3x_esp",
- .proc_info = &esp_proc_info,
- .name = "Sun ESP 100/100a/200",
- .detect = sun3x_esp_detect,
- .release = sun3x_esp_release,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .info = esp_info,
- .queuecommand = esp_queue,
- .eh_abort_handler = esp_abort,
- .eh_bus_reset_handler = esp_reset,
- .can_queue = 7,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
- .use_clustering = DISABLE_CLUSTERING,
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");
--
1.5.3.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-03 15:40 ` [PATCH 1/1] " Boaz Harrosh
@ 2008-01-03 18:16 ` James Bottomley
2008-01-03 19:05 ` Geert Uytterhoeven
0 siblings, 1 reply; 18+ messages in thread
From: James Bottomley @ 2008-01-03 18:16 UTC (permalink / raw)
To: Boaz Harrosh
Cc: Christoph Hellwig, Maciej W. Rozycki, David S. Miller, Linux/m68k,
linux-scsi
On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> As recommended by Christoph Hellwig. There is no use
> of Fixing these drivers, since there is a much simpler
> and modern esp infrastructure with David Miller's esp_scsi
>
> - Remove all driver files dependent on NCR53C9x.c
> deleted: drivers/scsi/NCR53C9x.c
> deleted: drivers/scsi/NCR53C9x.h
> deleted: drivers/scsi/blz1230.c
> deleted: drivers/scsi/blz2060.c
> deleted: drivers/scsi/cyberstorm.c
> deleted: drivers/scsi/cyberstormII.c
> deleted: drivers/scsi/dec_esp.c
> deleted: drivers/scsi/fastlane.c
> deleted: drivers/scsi/mac_esp.c
> deleted: drivers/scsi/mca_53c9x.c
> deleted: drivers/scsi/oktagon_esp.c
> deleted: drivers/scsi/oktagon_io.S
> deleted: drivers/scsi/sun3x_esp.c
>
> - Remove above list from drivers/scsi/Kconfig &&
> drivers/scsi/Makefile
OK, I'll split this into four pieces for scsi-pending, since there are
three separate interest groups with signoffs to collect (MCA, m68k and
alpha) plus the core removal.
James
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-03 18:16 ` James Bottomley
@ 2008-01-03 19:05 ` Geert Uytterhoeven
2008-01-03 19:19 ` James Bottomley
` (2 more replies)
0 siblings, 3 replies; 18+ messages in thread
From: Geert Uytterhoeven @ 2008-01-03 19:05 UTC (permalink / raw)
To: Linux/m68k
Cc: James Bottomley, Boaz Harrosh, Christoph Hellwig,
Maciej W. Rozycki, David S. Miller, linux-scsi
On Thu, 3 Jan 2008, James Bottomley wrote:
> On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > As recommended by Christoph Hellwig. There is no use
> > of Fixing these drivers, since there is a much simpler
> > and modern esp infrastructure with David Miller's esp_scsi
> >
> > - Remove all driver files dependent on NCR53C9x.c
> > deleted: drivers/scsi/NCR53C9x.c
> > deleted: drivers/scsi/NCR53C9x.h
> > deleted: drivers/scsi/blz1230.c
> > deleted: drivers/scsi/blz2060.c
> > deleted: drivers/scsi/cyberstorm.c
> > deleted: drivers/scsi/cyberstormII.c
> > deleted: drivers/scsi/dec_esp.c
> > deleted: drivers/scsi/fastlane.c
> > deleted: drivers/scsi/mac_esp.c
> > deleted: drivers/scsi/mca_53c9x.c
> > deleted: drivers/scsi/oktagon_esp.c
> > deleted: drivers/scsi/oktagon_io.S
> > deleted: drivers/scsi/sun3x_esp.c
> >
> > - Remove above list from drivers/scsi/Kconfig &&
> > drivers/scsi/Makefile
>
> OK, I'll split this into four pieces for scsi-pending, since there are
> three separate interest groups with signoffs to collect (MCA, m68k and
> alpha) plus the core removal.
Anybody who can look into converting the m68k NCR53C9x drivers and has
hardware to test (some of) them? I don't think we can afford losing one
third of our SCSI drivers...
You can use the following as guidance:
commit 5ff263667798946abc15314eae3f341345877d7a
Author: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Date: Tue May 22 17:03:44 2007 -0700
[SCSI] jazz_esp: Converted to use esp_core.
Use new esp_scsi for JAZZ SCSI host adapter driver
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-03 19:05 ` Geert Uytterhoeven
@ 2008-01-03 19:19 ` James Bottomley
2008-01-03 19:46 ` Michael Schmitz
2008-01-03 23:02 ` David Miller
2008-01-07 6:07 ` Kars de Jong
2 siblings, 1 reply; 18+ messages in thread
From: James Bottomley @ 2008-01-03 19:19 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Linux/m68k, Boaz Harrosh, Christoph Hellwig, Maciej W. Rozycki,
David S. Miller, linux-scsi
On Thu, 2008-01-03 at 20:05 +0100, Geert Uytterhoeven wrote:
> On Thu, 3 Jan 2008, James Bottomley wrote:
> > On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > > As recommended by Christoph Hellwig. There is no use
> > > of Fixing these drivers, since there is a much simpler
> > > and modern esp infrastructure with David Miller's esp_scsi
> > >
> > > - Remove all driver files dependent on NCR53C9x.c
> > > deleted: drivers/scsi/NCR53C9x.c
> > > deleted: drivers/scsi/NCR53C9x.h
> > > deleted: drivers/scsi/blz1230.c
> > > deleted: drivers/scsi/blz2060.c
> > > deleted: drivers/scsi/cyberstorm.c
> > > deleted: drivers/scsi/cyberstormII.c
> > > deleted: drivers/scsi/dec_esp.c
> > > deleted: drivers/scsi/fastlane.c
> > > deleted: drivers/scsi/mac_esp.c
> > > deleted: drivers/scsi/mca_53c9x.c
> > > deleted: drivers/scsi/oktagon_esp.c
> > > deleted: drivers/scsi/oktagon_io.S
> > > deleted: drivers/scsi/sun3x_esp.c
> > >
> > > - Remove above list from drivers/scsi/Kconfig &&
> > > drivers/scsi/Makefile
> >
> > OK, I'll split this into four pieces for scsi-pending, since there are
> > three separate interest groups with signoffs to collect (MCA, m68k and
> > alpha) plus the core removal.
>
> Anybody who can look into converting the m68k NCR53C9x drivers and has
> hardware to test (some of) them? I don't think we can afford losing one
> third of our SCSI drivers...
>
> You can use the following as guidance:
>
> commit 5ff263667798946abc15314eae3f341345877d7a
> Author: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> Date: Tue May 22 17:03:44 2007 -0700
>
> [SCSI] jazz_esp: Converted to use esp_core.
>
> Use new esp_scsi for JAZZ SCSI host adapter driver
I can also offer help to anyone who tries this. It's also a good
opportunity to let die drivers that have no committed users.
Just to be clear on why we're doing this: the NCR53C9x driver on which
these are all based is in a pretty horrendous state of repair. The
esp_scsi one is much nicer, actually nicely tested and has a host of
features the old driver didn't. However, the principle driving force is
the conversion of the SCSI subsystem to the sg_list accessors. esp_scsi
is already coverted. NCR53C9x looks like a nasty job. Thus, the moment
the conversion patch goes in, all your drivers will break. However,
since breakage excites a whole bunch of kernel compile checkers (and
lands me with a flood of email), I'm prepared to remove them to prevent
this from happening ... unless we can get them converted over to
esp_scsi.
I'll put the removal in the scsi-pending tree, so it won't be picked up
by -mm, but we need to get this situation resolved by 2.6.25 at the
latest.
James
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-03 19:19 ` James Bottomley
@ 2008-01-03 19:46 ` Michael Schmitz
0 siblings, 0 replies; 18+ messages in thread
From: Michael Schmitz @ 2008-01-03 19:46 UTC (permalink / raw)
To: James Bottomley
Cc: Geert Uytterhoeven, Linux/m68k, Boaz Harrosh, Christoph Hellwig,
Maciej W. Rozycki, David S. Miller, linux-scsi
Hi all,
> > Anybody who can look into converting the m68k NCR53C9x drivers and has
> > hardware to test (some of) them? I don't think we can afford losing one
> > third of our SCSI drivers...
I can look into converting some (having worked on the m68k Mac ESP driver
in the past - I do recall the Mac driver needs special hacks so it won't
be the easiest one to convert). I have no hardware to test these on,
however.
> > You can use the following as guidance:
> >
> > commit 5ff263667798946abc15314eae3f341345877d7a
> > Author: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> > Date: Tue May 22 17:03:44 2007 -0700
> >
> > [SCSI] jazz_esp: Converted to use esp_core.
> >
> > Use new esp_scsi for JAZZ SCSI host adapter driver
Hasn't this come up before on linux-m68k? Someone asked me for information
when converting the Mac driver, I think. That could be a good start.
> I can also offer help to anyone who tries this. It's also a good
> opportunity to let die drivers that have no committed users.
I'll contact you about this, then.
> Just to be clear on why we're doing this: the NCR53C9x driver on which
> these are all based is in a pretty horrendous state of repair. The
> esp_scsi one is much nicer, actually nicely tested and has a host of
> features the old driver didn't. However, the principle driving force is
> the conversion of the SCSI subsystem to the sg_list accessors. esp_scsi
> is already coverted. NCR53C9x looks like a nasty job. Thus, the moment
> the conversion patch goes in, all your drivers will break. However,
Hmm, does that also affect another of the m68k drivers, the 5380 one? More
headache for me...
Michael
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-03 19:05 ` Geert Uytterhoeven
2008-01-03 19:19 ` James Bottomley
@ 2008-01-03 23:02 ` David Miller
2008-01-04 9:59 ` Geert Uytterhoeven
2008-01-07 6:07 ` Kars de Jong
2 siblings, 1 reply; 18+ messages in thread
From: David Miller @ 2008-01-03 23:02 UTC (permalink / raw)
To: geert; +Cc: linux-m68k, James.Bottomley, bharrosh, hch, macro, linux-scsi
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Thu, 3 Jan 2008 20:05:27 +0100 (CET)
> On Thu, 3 Jan 2008, James Bottomley wrote:
> > On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > > As recommended by Christoph Hellwig. There is no use
> > > of Fixing these drivers, since there is a much simpler
> > > and modern esp infrastructure with David Miller's esp_scsi
> > >
> > > - Remove all driver files dependent on NCR53C9x.c
> > > deleted: drivers/scsi/NCR53C9x.c
> > > deleted: drivers/scsi/NCR53C9x.h
> > > deleted: drivers/scsi/blz1230.c
> > > deleted: drivers/scsi/blz2060.c
> > > deleted: drivers/scsi/cyberstorm.c
> > > deleted: drivers/scsi/cyberstormII.c
> > > deleted: drivers/scsi/dec_esp.c
> > > deleted: drivers/scsi/fastlane.c
> > > deleted: drivers/scsi/mac_esp.c
> > > deleted: drivers/scsi/mca_53c9x.c
> > > deleted: drivers/scsi/oktagon_esp.c
> > > deleted: drivers/scsi/oktagon_io.S
> > > deleted: drivers/scsi/sun3x_esp.c
> > >
> > > - Remove above list from drivers/scsi/Kconfig &&
> > > drivers/scsi/Makefile
> >
> > OK, I'll split this into four pieces for scsi-pending, since there are
> > three separate interest groups with signoffs to collect (MCA, m68k and
> > alpha) plus the core removal.
>
> Anybody who can look into converting the m68k NCR53C9x drivers and has
> hardware to test (some of) them? I don't think we can afford losing one
> third of our SCSI drivers...
We can't wait forever, and effort spent maintaining the old
rotting drivers is effort that should instead be spent on
the converted new drivers.
Instead of seeing conversions being written, we've been hearing this
swan song from the m68k crowd forever, it's getting quite old.
I totally object to keeping these things around any longer. And this
I support these changes going in.
Acked-by: David S. Miller <davem@davemloft.net>
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-03 23:02 ` David Miller
@ 2008-01-04 9:59 ` Geert Uytterhoeven
2008-01-04 11:05 ` Finn Thain
0 siblings, 1 reply; 18+ messages in thread
From: Geert Uytterhoeven @ 2008-01-04 9:59 UTC (permalink / raw)
To: David Miller
Cc: linux-m68k, James.Bottomley, bharrosh, hch, macro, linux-scsi
On Thu, 3 Jan 2008, David Miller wrote:
> From: Geert Uytterhoeven <geert@linux-m68k.org>
> > On Thu, 3 Jan 2008, James Bottomley wrote:
> > > On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > > > As recommended by Christoph Hellwig. There is no use
> > > > of Fixing these drivers, since there is a much simpler
> > > > and modern esp infrastructure with David Miller's esp_scsi
> > > >
> > > > - Remove all driver files dependent on NCR53C9x.c
> > > > deleted: drivers/scsi/NCR53C9x.c
> > > > deleted: drivers/scsi/NCR53C9x.h
> > > > deleted: drivers/scsi/blz1230.c
> > > > deleted: drivers/scsi/blz2060.c
> > > > deleted: drivers/scsi/cyberstorm.c
> > > > deleted: drivers/scsi/cyberstormII.c
> > > > deleted: drivers/scsi/dec_esp.c
> > > > deleted: drivers/scsi/fastlane.c
> > > > deleted: drivers/scsi/mac_esp.c
> > > > deleted: drivers/scsi/mca_53c9x.c
> > > > deleted: drivers/scsi/oktagon_esp.c
> > > > deleted: drivers/scsi/oktagon_io.S
> > > > deleted: drivers/scsi/sun3x_esp.c
> > > >
> > > > - Remove above list from drivers/scsi/Kconfig &&
> > > > drivers/scsi/Makefile
> > >
> > > OK, I'll split this into four pieces for scsi-pending, since there are
> > > three separate interest groups with signoffs to collect (MCA, m68k and
> > > alpha) plus the core removal.
> >
> > Anybody who can look into converting the m68k NCR53C9x drivers and has
> > hardware to test (some of) them? I don't think we can afford losing one
> > third of our SCSI drivers...
>
> We can't wait forever, and effort spent maintaining the old
> rotting drivers is effort that should instead be spent on
> the converted new drivers.
>
> Instead of seeing conversions being written, we've been hearing this
> swan song from the m68k crowd forever, it's getting quite old.
quite old == the new esp_scsi arrived in April 2007. On the m68k timescale,
this is just a split-second ago. Following this logic, it's a surprise
OSS hasn't been removed completely ;-)
> I totally object to keeping these things around any longer. And this
> I support these changes going in.
BTW, I hope you do remember why NCR53C9x.[ch] incarnated in the first place...
OK, we'll see what we can do...
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-04 9:59 ` Geert Uytterhoeven
@ 2008-01-04 11:05 ` Finn Thain
2008-01-04 11:49 ` David Miller
0 siblings, 1 reply; 18+ messages in thread
From: Finn Thain @ 2008-01-04 11:05 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: David Miller, linux-m68k, James.Bottomley, bharrosh, hch, macro,
linux-scsi
On Fri, 4 Jan 2008, Geert Uytterhoeven wrote:
>
> > I totally object to keeping these things around any longer. And this
> > I support these changes going in.
>
> BTW, I hope you do remember why NCR53C9x.[ch] incarnated in the first
> place...
>
> OK, we'll see what we can do...
I have a partially written replacement for mac_esp. Unlike the other
NCR53C9x drivers it needs PIO or pseudo DMA depending on the machine -- so
it is not as straight-forward as jazz_esp. The new esp_scsi core assumes
DMA and doesn't support asynch transfers. But I'll try to get it finished
before 2.6.25 is released.
Finn
> Gr{oetje,eeting}s,
>
> Geert
>
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-04 11:05 ` Finn Thain
@ 2008-01-04 11:49 ` David Miller
2008-01-05 5:07 ` Finn Thain
0 siblings, 1 reply; 18+ messages in thread
From: David Miller @ 2008-01-04 11:49 UTC (permalink / raw)
To: fthain; +Cc: geert, linux-m68k, James.Bottomley, bharrosh, hch, macro,
linux-scsi
From: Finn Thain <fthain@telegraphics.com.au>
Date: Fri, 4 Jan 2008 22:05:20 +1100 (EST)
> I have a partially written replacement for mac_esp. Unlike the other
> NCR53C9x drivers it needs PIO or pseudo DMA depending on the machine -- so
> it is not as straight-forward as jazz_esp. The new esp_scsi core assumes
> DMA and doesn't support asynch transfers. But I'll try to get it finished
> before 2.6.25 is released.
It does actually support such things.
You can hide it completely your ->irq_pending() handler. Process any
pending pseudo DMA and return 0 until there is a pseudo DMA error or
the pseudo DMA is complete and the ESP is signalling an IRQ.
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-04 11:49 ` David Miller
@ 2008-01-05 5:07 ` Finn Thain
2008-02-21 7:59 ` mac_esp and PIO, was " Finn Thain
0 siblings, 1 reply; 18+ messages in thread
From: Finn Thain @ 2008-01-05 5:07 UTC (permalink / raw)
To: David Miller
Cc: geert, linux-m68k, James.Bottomley, bharrosh, hch, macro,
linux-scsi
On Fri, 4 Jan 2008, David Miller wrote:
> From: Finn Thain <fthain@telegraphics.com.au>
> Date: Fri, 4 Jan 2008 22:05:20 +1100 (EST)
>
> > I have a partially written replacement for mac_esp. Unlike the other
> > NCR53C9x drivers it needs PIO or pseudo DMA depending on the machine -- so
> > it is not as straight-forward as jazz_esp. The new esp_scsi core assumes
> > DMA and doesn't support asynch transfers. But I'll try to get it finished
> > before 2.6.25 is released.
>
> It does actually support such things.
Does it? When I looked at this around 2.6.22, I found that esp_scsi would
always negotiate sync transfers if the target supported that. PIO cannot
do sync transfers, so I had to modify esp_scsi in order that the chip's
Synchronous Offset register was set to zero (asynch).
> You can hide it completely your ->irq_pending() handler. Process any
> pending pseudo DMA and return 0 until there is a pseudo DMA error or the
> pseudo DMA is complete and the ESP is signalling an IRQ.
I didn't attempt any processing in irq_pending. I'll look into it.
Finn
> -
> To unsubscribe from this list: send the line "unsubscribe linux-m68k" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-03 19:05 ` Geert Uytterhoeven
2008-01-03 19:19 ` James Bottomley
2008-01-03 23:02 ` David Miller
@ 2008-01-07 6:07 ` Kars de Jong
2008-01-31 18:08 ` James Bottomley
2 siblings, 1 reply; 18+ messages in thread
From: Kars de Jong @ 2008-01-07 6:07 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Linux/m68k, James Bottomley, Boaz Harrosh, Christoph Hellwig,
Maciej W. Rozycki, David S. Miller, linux-scsi
On do, 2008-01-03 at 20:05 +0100, Geert Uytterhoeven wrote:
> On Thu, 3 Jan 2008, James Bottomley wrote:
> > On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > > As recommended by Christoph Hellwig. There is no use
> > > of Fixing these drivers, since there is a much simpler
> > > and modern esp infrastructure with David Miller's esp_scsi
> > >
> > > - Remove all driver files dependent on NCR53C9x.c
> > > deleted: drivers/scsi/NCR53C9x.c
> > > deleted: drivers/scsi/NCR53C9x.h
> > > deleted: drivers/scsi/blz1230.c
> > > deleted: drivers/scsi/blz2060.c
> > > deleted: drivers/scsi/cyberstorm.c
> > > deleted: drivers/scsi/cyberstormII.c
> > > deleted: drivers/scsi/dec_esp.c
> > > deleted: drivers/scsi/fastlane.c
> > > deleted: drivers/scsi/mac_esp.c
> > > deleted: drivers/scsi/mca_53c9x.c
> > > deleted: drivers/scsi/oktagon_esp.c
> > > deleted: drivers/scsi/oktagon_io.S
> > > deleted: drivers/scsi/sun3x_esp.c
> > >
> > > - Remove above list from drivers/scsi/Kconfig &&
> > > drivers/scsi/Makefile
> >
> > OK, I'll split this into four pieces for scsi-pending, since there are
> > three separate interest groups with signoffs to collect (MCA, m68k and
> > alpha) plus the core removal.
>
> Anybody who can look into converting the m68k NCR53C9x drivers and has
> hardware to test (some of) them? I don't think we can afford losing one
> third of our SCSI drivers...
I'll have a look at this. I can only test it on Blizzard 1260 hardware
though.
Kind regards,
Kars.
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-07 6:07 ` Kars de Jong
@ 2008-01-31 18:08 ` James Bottomley
2008-01-31 18:55 ` Geert Uytterhoeven
0 siblings, 1 reply; 18+ messages in thread
From: James Bottomley @ 2008-01-31 18:08 UTC (permalink / raw)
To: Kars de Jong
Cc: Geert Uytterhoeven, Linux/m68k, Boaz Harrosh, Christoph Hellwig,
Maciej W. Rozycki, David S. Miller, linux-scsi
On Mon, 2008-01-07 at 07:07 +0100, Kars de Jong wrote:
> On do, 2008-01-03 at 20:05 +0100, Geert Uytterhoeven wrote:
> > On Thu, 3 Jan 2008, James Bottomley wrote:
> > > On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > > > As recommended by Christoph Hellwig. There is no use
> > > > of Fixing these drivers, since there is a much simpler
> > > > and modern esp infrastructure with David Miller's esp_scsi
> > > >
> > > > - Remove all driver files dependent on NCR53C9x.c
> > > > deleted: drivers/scsi/NCR53C9x.c
> > > > deleted: drivers/scsi/NCR53C9x.h
> > > > deleted: drivers/scsi/blz1230.c
> > > > deleted: drivers/scsi/blz2060.c
> > > > deleted: drivers/scsi/cyberstorm.c
> > > > deleted: drivers/scsi/cyberstormII.c
> > > > deleted: drivers/scsi/dec_esp.c
> > > > deleted: drivers/scsi/fastlane.c
> > > > deleted: drivers/scsi/mac_esp.c
> > > > deleted: drivers/scsi/mca_53c9x.c
> > > > deleted: drivers/scsi/oktagon_esp.c
> > > > deleted: drivers/scsi/oktagon_io.S
> > > > deleted: drivers/scsi/sun3x_esp.c
> > > >
> > > > - Remove above list from drivers/scsi/Kconfig &&
> > > > drivers/scsi/Makefile
> > >
> > > OK, I'll split this into four pieces for scsi-pending, since there are
> > > three separate interest groups with signoffs to collect (MCA, m68k and
> > > alpha) plus the core removal.
> >
> > Anybody who can look into converting the m68k NCR53C9x drivers and has
> > hardware to test (some of) them? I don't think we can afford losing one
> > third of our SCSI drivers...
>
> I'll have a look at this. I can only test it on Blizzard 1260 hardware
> though.
OK, time's up.
These drivers are now unbuildable in mainline because of the promised
sg_table updates. They either get removed, fixed or marked as BROKEN.
Which is it to be?
James
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-31 18:08 ` James Bottomley
@ 2008-01-31 18:55 ` Geert Uytterhoeven
2008-01-31 19:06 ` Boaz Harrosh
2008-01-31 19:31 ` James Bottomley
0 siblings, 2 replies; 18+ messages in thread
From: Geert Uytterhoeven @ 2008-01-31 18:55 UTC (permalink / raw)
To: James Bottomley
Cc: Kars de Jong, Linux/m68k, Boaz Harrosh, Christoph Hellwig,
Maciej W. Rozycki, David S. Miller, linux-scsi
On Thu, 31 Jan 2008, James Bottomley wrote:
> On Mon, 2008-01-07 at 07:07 +0100, Kars de Jong wrote:
> > On do, 2008-01-03 at 20:05 +0100, Geert Uytterhoeven wrote:
> > > On Thu, 3 Jan 2008, James Bottomley wrote:
> > > > On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > > > > As recommended by Christoph Hellwig. There is no use
> > > > > of Fixing these drivers, since there is a much simpler
> > > > > and modern esp infrastructure with David Miller's esp_scsi
> > > > >
> > > > > - Remove all driver files dependent on NCR53C9x.c
> > > > > deleted: drivers/scsi/NCR53C9x.c
> > > > > deleted: drivers/scsi/NCR53C9x.h
> > > > > deleted: drivers/scsi/blz1230.c
> > > > > deleted: drivers/scsi/blz2060.c
> > > > > deleted: drivers/scsi/cyberstorm.c
> > > > > deleted: drivers/scsi/cyberstormII.c
> > > > > deleted: drivers/scsi/dec_esp.c
> > > > > deleted: drivers/scsi/fastlane.c
> > > > > deleted: drivers/scsi/mac_esp.c
> > > > > deleted: drivers/scsi/mca_53c9x.c
> > > > > deleted: drivers/scsi/oktagon_esp.c
> > > > > deleted: drivers/scsi/oktagon_io.S
> > > > > deleted: drivers/scsi/sun3x_esp.c
> > > > >
> > > > > - Remove above list from drivers/scsi/Kconfig &&
> > > > > drivers/scsi/Makefile
> > > >
> > > > OK, I'll split this into four pieces for scsi-pending, since there are
> > > > three separate interest groups with signoffs to collect (MCA, m68k and
> > > > alpha) plus the core removal.
> > >
> > > Anybody who can look into converting the m68k NCR53C9x drivers and has
> > > hardware to test (some of) them? I don't think we can afford losing one
> > > third of our SCSI drivers...
> >
> > I'll have a look at this. I can only test it on Blizzard 1260 hardware
> > though.
>
> OK, time's up.
>
> These drivers are now unbuildable in mainline because of the promised
> sg_table updates. They either get removed, fixed or marked as BROKEN.
> Which is it to be?
Is git smart enough to follow history between files that get removed and
readded?
If yes, I think you can remove them.
If no, please mark them as BROKEN.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-31 18:55 ` Geert Uytterhoeven
@ 2008-01-31 19:06 ` Boaz Harrosh
2008-01-31 19:31 ` James Bottomley
1 sibling, 0 replies; 18+ messages in thread
From: Boaz Harrosh @ 2008-01-31 19:06 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: James Bottomley, Kars de Jong, Linux/m68k, Christoph Hellwig,
Maciej W. Rozycki, David S. Miller, linux-scsi
On Thu, Jan 31 2008 at 20:55 +0200, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Thu, 31 Jan 2008, James Bottomley wrote:
>> On Mon, 2008-01-07 at 07:07 +0100, Kars de Jong wrote:
>>> On do, 2008-01-03 at 20:05 +0100, Geert Uytterhoeven wrote:
>>>> On Thu, 3 Jan 2008, James Bottomley wrote:
>>>>> On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
>>>>>> As recommended by Christoph Hellwig. There is no use
>>>>>> of Fixing these drivers, since there is a much simpler
>>>>>> and modern esp infrastructure with David Miller's esp_scsi
>>>>>>
>>>>>> - Remove all driver files dependent on NCR53C9x.c
>>>>>> deleted: drivers/scsi/NCR53C9x.c
>>>>>> deleted: drivers/scsi/NCR53C9x.h
>>>>>> deleted: drivers/scsi/blz1230.c
>>>>>> deleted: drivers/scsi/blz2060.c
>>>>>> deleted: drivers/scsi/cyberstorm.c
>>>>>> deleted: drivers/scsi/cyberstormII.c
>>>>>> deleted: drivers/scsi/dec_esp.c
>>>>>> deleted: drivers/scsi/fastlane.c
>>>>>> deleted: drivers/scsi/mac_esp.c
>>>>>> deleted: drivers/scsi/mca_53c9x.c
>>>>>> deleted: drivers/scsi/oktagon_esp.c
>>>>>> deleted: drivers/scsi/oktagon_io.S
>>>>>> deleted: drivers/scsi/sun3x_esp.c
>>>>>>
>>>>>> - Remove above list from drivers/scsi/Kconfig &&
>>>>>> drivers/scsi/Makefile
>>>>> OK, I'll split this into four pieces for scsi-pending, since there are
>>>>> three separate interest groups with signoffs to collect (MCA, m68k and
>>>>> alpha) plus the core removal.
>>>> Anybody who can look into converting the m68k NCR53C9x drivers and has
>>>> hardware to test (some of) them? I don't think we can afford losing one
>>>> third of our SCSI drivers...
>>> I'll have a look at this. I can only test it on Blizzard 1260 hardware
>>> though.
>> OK, time's up.
>>
>> These drivers are now unbuildable in mainline because of the promised
>> sg_table updates. They either get removed, fixed or marked as BROKEN.
>> Which is it to be?
>
> Is git smart enough to follow history between files that get removed and
> readded?
> If yes, I think you can remove them.
> If no, please mark them as BROKEN.
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
> -
I did submit a fix to all these drivers, but It was said by people that these
drivers should not be fixed because they have a better alternative with the other
esp family. And any devices not supported by the other family should be not more
then a day of work to support. So doing the better job of supporting them in the
new form is less effort then resurrecting junk code from the graveyard.
I say dump it. Christoph ??!
Boaz
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-31 18:55 ` Geert Uytterhoeven
2008-01-31 19:06 ` Boaz Harrosh
@ 2008-01-31 19:31 ` James Bottomley
2008-02-08 6:04 ` Christoph Hellwig
1 sibling, 1 reply; 18+ messages in thread
From: James Bottomley @ 2008-01-31 19:31 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Kars de Jong, Linux/m68k, Boaz Harrosh, Christoph Hellwig,
Maciej W. Rozycki, David S. Miller, linux-scsi
On Thu, 2008-01-31 at 19:55 +0100, Geert Uytterhoeven wrote:
> On Thu, 31 Jan 2008, James Bottomley wrote:
> > On Mon, 2008-01-07 at 07:07 +0100, Kars de Jong wrote:
> > > On do, 2008-01-03 at 20:05 +0100, Geert Uytterhoeven wrote:
> > > > On Thu, 3 Jan 2008, James Bottomley wrote:
> > > > > On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > > > > > As recommended by Christoph Hellwig. There is no use
> > > > > > of Fixing these drivers, since there is a much simpler
> > > > > > and modern esp infrastructure with David Miller's esp_scsi
> > > > > >
> > > > > > - Remove all driver files dependent on NCR53C9x.c
> > > > > > deleted: drivers/scsi/NCR53C9x.c
> > > > > > deleted: drivers/scsi/NCR53C9x.h
> > > > > > deleted: drivers/scsi/blz1230.c
> > > > > > deleted: drivers/scsi/blz2060.c
> > > > > > deleted: drivers/scsi/cyberstorm.c
> > > > > > deleted: drivers/scsi/cyberstormII.c
> > > > > > deleted: drivers/scsi/dec_esp.c
> > > > > > deleted: drivers/scsi/fastlane.c
> > > > > > deleted: drivers/scsi/mac_esp.c
> > > > > > deleted: drivers/scsi/mca_53c9x.c
> > > > > > deleted: drivers/scsi/oktagon_esp.c
> > > > > > deleted: drivers/scsi/oktagon_io.S
> > > > > > deleted: drivers/scsi/sun3x_esp.c
> > > > > >
> > > > > > - Remove above list from drivers/scsi/Kconfig &&
> > > > > > drivers/scsi/Makefile
> > > > >
> > > > > OK, I'll split this into four pieces for scsi-pending, since there are
> > > > > three separate interest groups with signoffs to collect (MCA, m68k and
> > > > > alpha) plus the core removal.
> > > >
> > > > Anybody who can look into converting the m68k NCR53C9x drivers and has
> > > > hardware to test (some of) them? I don't think we can afford losing one
> > > > third of our SCSI drivers...
> > >
> > > I'll have a look at this. I can only test it on Blizzard 1260 hardware
> > > though.
> >
> > OK, time's up.
> >
> > These drivers are now unbuildable in mainline because of the promised
> > sg_table updates. They either get removed, fixed or marked as BROKEN.
> > Which is it to be?
>
> Is git smart enough to follow history between files that get removed and
> readded?
Yes. git revert on the removal changeset will re-add all the files and
try to put the entries back into Kconfig and Makefile.
> If yes, I think you can remove them.
> If no, please mark them as BROKEN.
OK ... I'll wave the magic wand.
James
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-31 19:31 ` James Bottomley
@ 2008-02-08 6:04 ` Christoph Hellwig
0 siblings, 0 replies; 18+ messages in thread
From: Christoph Hellwig @ 2008-02-08 6:04 UTC (permalink / raw)
To: James Bottomley
Cc: Geert Uytterhoeven, Kars de Jong, Linux/m68k, Boaz Harrosh,
Christoph Hellwig, Maciej W. Rozycki, David S. Miller, linux-scsi
On Thu, Jan 31, 2008 at 01:31:56PM -0600, James Bottomley wrote:
> > Is git smart enough to follow history between files that get removed and
> > readded?
>
> Yes. git revert on the removal changeset will re-add all the files and
> try to put the entries back into Kconfig and Makefile.
Note that it doesn't really matter. Looking at the existing conversion
there's been no line left the same except for the standard #include
statements.
^ permalink raw reply [flat|nested] 18+ messages in thread
* mac_esp and PIO, was Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers
2008-01-05 5:07 ` Finn Thain
@ 2008-02-21 7:59 ` Finn Thain
0 siblings, 0 replies; 18+ messages in thread
From: Finn Thain @ 2008-02-21 7:59 UTC (permalink / raw)
To: David Miller; +Cc: linux-m68k, linux-scsi
Hi All,
At the end of this message is the replacement mac_esp driver I've been
working on. It isn't finished but it works fine.
The only remaining concerns I have are some of the changes to esp_scsi:
firstly I'm hoping that there's a better way to negotiate async transfers,
and secondly I'm unsure about exporting esp_dma_length_limit (perhaps it
would be better just to add an integer to struct esp for that value? The
other front-ends could leave it zeroed for the original behaviour.)
David, some more discussion of the asynch problem follows...
On Sat, 5 Jan 2008, I wrote:
>
> On Fri, 4 Jan 2008, David Miller wrote:
>
> > From: Finn Thain <fthain@telegraphics.com.au>
> > Date: Fri, 4 Jan 2008 22:05:20 +1100 (EST)
> >
> > > I have a partially written replacement for mac_esp. Unlike the other
> > > NCR53C9x drivers it needs PIO or pseudo DMA depending on the machine
> > > -- so it is not as straight-forward as jazz_esp. The new esp_scsi
> > > core assumes DMA and doesn't support asynch transfers. But I'll try
> > > to get it finished before 2.6.25 is released.
> >
> > It does actually support such things.
>
> Does it? When I looked at this around 2.6.22, I found that esp_scsi
> would always negotiate sync transfers if the target supported that. PIO
> cannot do sync transfers, so I had to modify esp_scsi in order that the
> chip's Synchronous Offset register was set to zero (asynch).
I think it would be better to bypass Domain Validation for PIO. The hack I
used (ESP_FLAG_DISABLE_SYNC) is a bit messy because it seems to confuse
domain validation. For example, here's the log from probing the bus:
mac_esp: using PIO for controller 0
esp: esp0, regs[50f18000:0] irq[19]
esp: esp0 is a ESP236, 25 MHz (ccf=5), SCSI ID 7
scsi0 : esp
scsi 0:0:3:0: CD-ROM MATSHITA CD-ROM CR-8004 1.0p PQ: 0
ANSI: 2
target0:0:3: Beginning Domain Validation
target0:0:3: asynchronous
mac_esp: FIFO is empty (sreg 81).
esp: esp0: DMA length is zero!
esp: esp0: cur adr[0050e048] len[00000000]
target0:0:3: Domain Validation detected failure, dropping back
target0:0:3: asynchronous
target0:0:3: Domain Validation skipping write tests
target0:0:3: Ending Domain Validation
scsi 0:0:6:0: Direct-Access QUANTUM LPS540S 590S PQ: 0
ANSI: 2 CCS
target0:0:6: Beginning Domain Validation
target0:0:6: asynchronous
mac_esp: FIFO is empty (sreg 81).
esp: esp0: DMA length is zero!
esp: esp0: cur adr[0050e104] len[00000000]
target0:0:6: Domain Validation detected failure, dropping back
target0:0:6: asynchronous
mac_esp: FIFO is empty (sreg 81).
esp: esp0: DMA length is zero!
esp: esp0: cur adr[0050e104] len[00000000]
target0:0:6: Domain Validation detected failure, dropping back
target0:0:6: asynchronous
mac_esp: FIFO is empty (sreg 81).
esp: esp0: DMA length is zero!
esp: esp0: cur adr[0050e104] len[00000000]
target0:0:6: Domain Validation detected failure, dropping back
target0:0:6: asynchronous
mac_esp: FIFO is empty (sreg 81).
esp: esp0: DMA length is zero!
esp: esp0: cur adr[0050e104] len[00000000]
target0:0:6: Domain Validation detected failure, dropping back
target0:0:6: asynchronous
mac_esp: FIFO is empty (sreg 81).
esp: esp0: DMA length is zero!
esp: esp0: cur adr[0050e104] len[00000000]
target0:0:6: Domain Validation Failure, dropping back to Asynchronous
target0:0:6: Domain Validation skipping write tests
target0:0:6: Ending Domain Validation
sd 0:0:6:0: [sda] 1057616 512-byte hardware sectors (541 MB)
sd 0:0:6:0: [sda] Write Protect is off
sd 0:0:6:0: [sda] Mode Sense: 93 00 00 08
sd 0:0:6:0: [sda] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 0:0:6:0: [sda] 1057616 512-byte hardware sectors (541 MB)
sd 0:0:6:0: [sda] Write Protect is off
sd 0:0:6:0: [sda] Mode Sense: 93 00 00 08
sd 0:0:6:0: [sda] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sda: [mac] sda1 sda2 sda3 sda4 sda5 sda6
sda: p6 exceeds device capacity
sd 0:0:6:0: [sda] Attached SCSI disk
...which may be inefficient but it is a lot quicker than waiting for
command timeouts, which is what happens without my hack:
[snipped first part of validation and half a dozen command timeouts]
target0:0:6: Domain Validation detected failure, dropping back
target0:0:6: FAST-5 SCSI 1.5 MB/s ST (672 ns, offset 8)
mac_esp: IRQ timeout (sreg 01).
esp: esp0: Aborting command [0045ccb0:12]
esp: esp0: Current command [0045ccb0:12]
esp: esp0: Active command [0045ccb0:12]
esp: esp0: Dumping command log
esp: esp0: ent[3] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[4] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[5] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[6] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[7] EVENT val[06] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[8] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[9] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[10] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[11] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[12] EVENT val[06] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[13] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[14] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[15] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[16] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[17] EVENT val[06] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[18] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[19] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[20] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[21] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[22] EVENT val[06] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[23] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[24] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[25] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[26] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[27] EVENT val[01] sreg[82] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[28] CMD val[01] sreg[82] seqreg[01] sreg2[00] ireg[10] ss[00] event[01]
esp: esp0: ent[29] CMD val[10] sreg[82] seqreg[01] sreg2[00] ireg[10] ss[00] event[01]
esp: esp0: ent[30] EVENT val[02] sreg[82] seqreg[01] sreg2[00] ireg[10] ss[00] event[01]
esp: esp0: ent[31] EVENT val[0d] sreg[81] seqreg[01] sreg2[00] ireg[10] ss[00] event[02]
esp: esp0: ent[0] EVENT val[03] sreg[81] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[1] CMD val[10] sreg[81] seqreg[01] sreg2[00] ireg[10] ss[00] event[03]
esp: esp0: ent[2] EVENT val[05] sreg[01] seqreg[01] sreg2[00] ireg[10] ss[00] event[03]
target0:0:6: FAST-5 SCSI 1.5 MB/s ST (672 ns, offset 8)
target0:0:6: Domain Validation detected failure, dropping back
target0:0:6: FAST-5 SCSI 1.0 MB/s ST (1008 ns, offset 8)
mac_esp: IRQ timeout (sreg 01).
esp: esp0: Aborting command [0045ccb0:12]
esp: esp0: Current command [0045ccb0:12]
esp: esp0: Active command [0045ccb0:12]
esp: esp0: Dumping command log
esp: esp0: ent[1] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[2] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[3] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[4] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[5] EVENT val[06] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[6] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[7] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[8] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[9] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[10] EVENT val[06] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[11] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[12] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[13] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[14] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[15] EVENT val[06] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[16] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[17] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[18] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[19] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[20] EVENT val[06] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[21] CMD val[01] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[22] CMD val[10] sreg[87] seqreg[01] sreg2[00] ireg[10] ss[00] event[06]
esp: esp0: ent[23] CMD val[12] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[24] EVENT val[0d] sreg[87] seqreg[01] sreg2[00] ireg[08] ss[00] event[06]
esp: esp0: ent[25] EVENT val[01] sreg[82] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[26] CMD val[01] sreg[82] seqreg[01] sreg2[00] ireg[10] ss[00] event[01]
esp: esp0: ent[27] CMD val[10] sreg[82] seqreg[01] sreg2[00] ireg[10] ss[00] event[01]
esp: esp0: ent[28] EVENT val[02] sreg[82] seqreg[01] sreg2[00] ireg[10] ss[00] event[01]
esp: esp0: ent[29] EVENT val[0d] sreg[81] seqreg[01] sreg2[00] ireg[10] ss[00] event[02]
esp: esp0: ent[30] EVENT val[03] sreg[81] seqreg[01] sreg2[00] ireg[10] ss[00] event[0d]
esp: esp0: ent[31] CMD val[10] sreg[81] seqreg[01] sreg2[00] ireg[10] ss[00] event[03]
esp: esp0: ent[0] EVENT val[05] sreg[01] seqreg[01] sreg2[00] ireg[10] ss[00] event[03]
target0:0:6: FAST-5 SCSI 1.0 MB/s ST (1008 ns, offset 8)
target0:0:6: Domain Validation Failure, dropping back to Asynchronous
target0:0:6: Domain Validation skipping write tests
target0:0:6: Ending Domain Validation
target0:0:6: asynchronous
>
> > You can hide it completely your ->irq_pending() handler. Process any
> > pending pseudo DMA and return 0 until there is a pseudo DMA error or
> > the pseudo DMA is complete and the ESP is signalling an IRQ.
>
> I didn't attempt any processing in irq_pending. I'll look into it.
Well, I've looked into it. It turns out that I can't report an error from
irq_pending() because it is never called. What happens is that the domain
validation algorithm will issue a synchronous command (like a 36 byte read
from the CDROM drive) but, given only PIO, the chip raises no interrupt:
mac_esp: using PIO for controller 0
esp: esp0, regs[50f18000:0] irq[19]
esp: esp0 is a ESP236, 25 MHz (ccf=5), SCSI ID 7
scsi0 : esp
>write 0, cmd 0xC2, fifo 0, esp_count 7
>write 0, cmd 0xC2, fifo 7, esp_count 7
>write 0, cmd 0xC2, fifo 7, esp_count 7
>write 0, cmd 0xC2, fifo 7, esp_count 7
>write 1, cmd 0x90, fifo 0, esp_count 36
scsi 0:0:3:0: CD-ROM MATSHITA CD-ROM CR-8004 1.0p PQ: 0 ANSI: 2
target0:0:3: Beginning Domain Validation
>write 0, cmd 0xC2, fifo 0, esp_count 7
>write 1, cmd 0x90, fifo 0, esp_count 36
>write 0, cmd 0xC2, fifo 0, esp_count 7
>write 1, cmd 0x90, fifo 0, esp_count 36
>write 0, cmd 0xC2, fifo 0, esp_count 7
>write 1, cmd 0x90, fifo 0, esp_count 36
>write 0, cmd 0xC2, fifo 0, esp_count 7
>write 1, cmd 0x90, fifo 0, esp_count 36
>write 0, cmd 0xC3, fifo 0, esp_count 1
>write 0, cmd 0x90, fifo 0, esp_count 5
target0:0:3: FAST-5 SCSI 2.1 MB/s ST (472 ns, offset 8)
>write 0, cmd 0x90, fifo 0, esp_count 6
>write 1, cmd 0x90, fifo 0, esp_count 36
mac_esp: IRQ timeout (sreg 01).
esp: esp0: Aborting command [004e0cb0:12]
esp: esp0: Current command [004e0cb0:12]
esp: esp0: Active command [004e0cb0:12]
esp: esp0: Dumping command log
...
Hence the ESP_FLAG_DISABLE_SYNC hack... but I have to wonder, is there no
better way to short circuit domain validation?
Cheers,
Finn
---
drivers/scsi/Makefile | 1
drivers/scsi/esp_scsi.c | 27 +
drivers/scsi/esp_scsi.h | 9
drivers/scsi/jazz_esp.c | 25 -
drivers/scsi/mac_esp.c | 650 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/scsi/sun_esp.c | 25 -
drivers/scsi/sun3x_esp.c | 25 -
6 files changed, 700 insertions(+), 37 deletions(-)
Index: linux-2.6.22/drivers/scsi/esp_scsi.c
===================================================================
--- linux-2.6.22.orig/drivers/scsi/esp_scsi.c 2008-02-21 14:49:48.000000000 +1100
+++ linux-2.6.22/drivers/scsi/esp_scsi.c 2008-02-21 14:49:48.000000000 +1100
@@ -477,7 +477,7 @@ static void esp_write_tgt_sync(struct es
}
}
-static u32 esp_dma_length_limit(struct esp *esp, u32 dma_addr, u32 dma_len)
+u32 esp_dma_length_limit(struct esp *esp, u32 dma_addr, u32 dma_len)
{
if (esp->rev == FASHME) {
/* Arbitrary segment boundaries, 24-bit counts. */
@@ -506,6 +506,7 @@ static u32 esp_dma_length_limit(struct e
}
return dma_len;
}
+EXPORT_SYMBOL(esp_dma_length_limit);
static int esp_need_to_nego_wide(struct esp_target_data *tp)
{
@@ -982,7 +983,7 @@ static int esp_check_spur_intr(struct es
*/
if (!esp->ops->dma_error(esp)) {
printk(KERN_ERR PFX "esp%d: Spurious irq, "
- "sreg=%x.\n",
+ "sreg=%02x.\n",
esp->host->unique_id, esp->sreg);
return -1;
}
@@ -1451,6 +1452,9 @@ static void esp_msgin_sdtr(struct esp *e
if (offset > 15)
goto do_reject;
+ if (esp->flags & ESP_FLAG_DISABLE_SYNC)
+ offset = 0;
+
if (offset) {
int rounded_up, one_clock;
@@ -1701,7 +1705,7 @@ again:
else
ent->flags &= ~ESP_CMD_FLAG_WRITE;
- dma_len = esp_dma_length_limit(esp, dma_addr, dma_len);
+ dma_len = esp->ops->dma_length_limit(esp, dma_addr, dma_len);
esp->data_dma_len = dma_len;
if (!dma_len) {
@@ -1765,7 +1769,6 @@ again:
esp_advance_dma(esp, ent, cmd, bytes_sent);
esp_event(esp, ESP_EVENT_CHECK_PHASE);
goto again;
- break;
}
case ESP_EVENT_STATUS: {
@@ -2239,7 +2242,7 @@ static void esp_bootup_reset(struct esp
static void __devinit esp_set_clock_params(struct esp *esp)
{
- int fmhz;
+ int fhz;
u8 ccf;
/* This is getting messy but it has to be done correctly or else
@@ -2274,9 +2277,9 @@ static void __devinit esp_set_clock_para
* This entails the smallest and largest sync period we could ever
* handle on this ESP.
*/
- fmhz = esp->cfreq;
+ fhz = esp->cfreq;
- ccf = ((fmhz / 1000000) + 4) / 5;
+ ccf = ((fhz / 1000000) + 4) / 5;
if (ccf == 1)
ccf = 2;
@@ -2285,16 +2288,16 @@ static void __devinit esp_set_clock_para
* been unable to find the clock-frequency PROM property. All
* other machines provide useful values it seems.
*/
- if (fmhz <= 5000000 || ccf < 1 || ccf > 8) {
- fmhz = 20000000;
+ if (fhz <= 5000000 || ccf < 1 || ccf > 8) {
+ fhz = 20000000;
ccf = 4;
}
esp->cfact = (ccf == 8 ? 0 : ccf);
- esp->cfreq = fmhz;
- esp->ccycle = ESP_MHZ_TO_CYCLE(fmhz);
+ esp->cfreq = fhz;
+ esp->ccycle = ESP_HZ_TO_CYCLE(fhz);
esp->ctick = ESP_TICK(ccf, esp->ccycle);
- esp->neg_defp = ESP_NEG_DEFP(fmhz, ccf);
+ esp->neg_defp = ESP_NEG_DEFP(fhz, ccf);
esp->sync_defp = SYNC_DEFP_SLOW;
}
Index: linux-2.6.22/drivers/scsi/esp_scsi.h
===================================================================
--- linux-2.6.22.orig/drivers/scsi/esp_scsi.h 2008-02-21 14:49:27.000000000 +1100
+++ linux-2.6.22/drivers/scsi/esp_scsi.h 2008-02-21 14:49:48.000000000 +1100
@@ -224,7 +224,7 @@
#define ESP_TIMEO_CONST 8192
#define ESP_NEG_DEFP(mhz, cfact) \
((ESP_BUS_TIMEOUT * ((mhz) / 1000)) / (8192 * (cfact)))
-#define ESP_MHZ_TO_CYCLE(mhertz) ((1000000000) / ((mhertz) / 1000))
+#define ESP_HZ_TO_CYCLE(hertz) ((1000000000) / ((hertz) / 1000))
#define ESP_TICK(ccf, cycle) ((7682 * (ccf) * (cycle) / 1000))
/* For slow to medium speed input clock rates we shoot for 5mb/s, but for high
@@ -368,6 +368,12 @@ struct esp_driver_ops {
*/
int (*irq_pending)(struct esp *esp);
+ /* Return the maximum allowable size of a DMA transfer for a
+ * given buffer.
+ */
+ u32 (*dma_length_limit)(struct esp *esp, u32 dma_addr,
+ u32 dma_len);
+
/* Reset the DMA engine entirely. On return, ESP interrupts
* should be enabled. Often the interrupt enabling is
* controlled in the DMA engine.
@@ -471,6 +477,7 @@ struct esp {
#define ESP_FLAG_DOING_SLOWCMD 0x00000004
#define ESP_FLAG_WIDE_CAPABLE 0x00000008
#define ESP_FLAG_QUICKIRQ_CHECK 0x00000010
+#define ESP_FLAG_DISABLE_SYNC 0x00000020
u8 select_state;
#define ESP_SELECT_NONE 0x00 /* Not selecting */
Index: linux-2.6.22/drivers/scsi/Makefile
===================================================================
--- linux-2.6.22.orig/drivers/scsi/Makefile 2008-02-21 14:49:48.000000000 +1100
+++ linux-2.6.22/drivers/scsi/Makefile 2008-02-21 14:49:48.000000000 +1100
@@ -52,6 +52,7 @@ obj-$(CONFIG_FASTLANE_SCSI) += NCR53C9x.
obj-$(CONFIG_OKTAGON_SCSI) += NCR53C9x.o oktagon_esp_mod.o
obj-$(CONFIG_ATARI_SCSI) += atari_scsi.o
obj-$(CONFIG_MAC_SCSI) += mac_scsi.o
+obj-$(CONFIG_SCSI_MAC_ESP) += esp_scsi.o mac_esp.o
obj-$(CONFIG_SUN3_SCSI) += sun3_scsi.o sun3_scsi_vme.o
obj-$(CONFIG_MVME16x_SCSI) += 53c700.o mvme16x_scsi.o
obj-$(CONFIG_BVME6000_SCSI) += 53c700.o bvme6000_scsi.o
Index: linux-2.6.22/drivers/scsi/mac_esp.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.22/drivers/scsi/mac_esp.c 2008-02-21 17:08:13.000000000 +1100
@@ -0,0 +1,653 @@
+/* mac_esp.c: ESP front-end for Macintosh Quadra systems.
+ *
+ * Adapted from jazz_esp.c and the old mac_esp.c.
+ *
+ * The pseudo DMA algorithm is based on the one used in NetBSD.
+ * See sys/arch/mac68k/obio/esp.c for some background information.
+ *
+ * Copyright (C) 2007-2008 Finn Thain
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/scatterlist.h>
+#include <linux/delay.h>
+
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <asm/nubus.h>
+#include <asm/macints.h>
+#include <asm/macintosh.h>
+
+#include <scsi/scsi_host.h>
+
+#include "esp_scsi.h"
+
+#define DRV_MODULE_NAME "mac_esp"
+#define PFX DRV_MODULE_NAME ": "
+#define DRV_VERSION "1.000"
+#define DRV_MODULE_RELDATE "Sept 15, 2007"
+
+#define MAC_ESP_IO_BASE 0x50F00000
+#define MAC_ESP_REGS_QUADRA (MAC_ESP_IO_BASE + 0x10000)
+#define MAC_ESP_REGS_QUADRA2 (MAC_ESP_IO_BASE + 0xF000)
+#define MAC_ESP_REGS_QUADRA3 (MAC_ESP_IO_BASE + 0x18000)
+#define MAC_ESP_REGS_SPACING 0x402
+#define MAC_ESP_PDMA_REG 0xF9800024
+#define MAC_ESP_PDMA_REG_SPACING 0x4
+#define MAC_ESP_PDMA_IO_OFFSET 0x100
+
+#define esp_read8(REG) mac_esp_read8(esp, REG)
+#define esp_write8(VAL,REG) mac_esp_write8(esp, VAL, REG)
+
+struct mac_esp_priv {
+ struct esp *esp;
+ void __iomem *pdma_regs;
+ void __iomem *pdma_io;
+ int error;
+};
+static struct platform_device *internal_esp, *external_esp;
+
+#define MAC_ESP_GET_PRIV(esp) ((struct mac_esp_priv *) \
+ platform_get_drvdata((struct platform_device *) \
+ (esp->dev)))
+
+static inline void mac_esp_write8(struct esp *esp, u8 val, unsigned long reg)
+{
+ nubus_writeb(val, esp->regs + reg * 16);
+}
+
+static inline u8 mac_esp_read8(struct esp *esp, unsigned long reg)
+{
+ return nubus_readb(esp->regs + reg * 16);
+}
+
+/* For pseudo DMA and PIO we need the virtual address
+ * so this address mapping is the identity mapping.
+ */
+
+static dma_addr_t mac_esp_map_single(struct esp *esp, void *buf,
+ size_t sz, int dir)
+{
+ return (dma_addr_t)buf;
+}
+
+static int mac_esp_map_sg(struct esp *esp, struct scatterlist *sg,
+ int num_sg, int dir)
+{
+ int i;
+
+ for (i = 0; i < num_sg; i++)
+ sg[i].dma_address = (u32)page_address(sg[i].page) + sg[i].offset;
+ return num_sg;
+}
+
+static void mac_esp_unmap_single(struct esp *esp, dma_addr_t addr,
+ size_t sz, int dir)
+{
+ /* Nothing to do. */
+}
+
+static void mac_esp_unmap_sg(struct esp *esp, struct scatterlist *sg,
+ int num_sg, int dir)
+{
+ /* Nothing to do. */
+}
+
+static void mac_esp_reset_dma(struct esp *esp)
+{
+ /* Nothing to do. */
+}
+
+static void mac_esp_dma_drain(struct esp *esp)
+{
+ /* Nothing to do. */
+}
+
+static void mac_esp_dma_invalidate(struct esp *esp)
+{
+ /* Nothing to do. */
+}
+
+static int mac_esp_dma_error(struct esp *esp)
+{
+ return MAC_ESP_GET_PRIV(esp)->error;
+}
+
+static inline int mac_esp_wait_for_empty_fifo(struct esp *esp)
+{
+ struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
+ int i = 500000;
+
+ do {
+ if (!(esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES))
+ return 0;
+
+ if (esp_read8(ESP_STATUS) & ESP_STAT_INTR)
+ return 1;
+
+ udelay(2);
+ } while (--i);
+
+ printk(KERN_ERR PFX "FIFO is not empty (sreg %02x).\n",
+ esp_read8(ESP_STATUS));
+ mep->error = 1;
+ return 1;
+}
+
+static inline int mac_esp_wait_for_dreq(struct esp *esp)
+{
+ struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
+ int i = 500000;
+
+ do {
+ if (mep->pdma_regs == NULL) {
+ if (mac_irq_pending(IRQ_MAC_SCSIDRQ))
+ return 0;
+ } else {
+ if (nubus_readl(mep->pdma_regs) & 0x200)
+ return 0;
+ }
+
+ if (esp_read8(ESP_STATUS) & ESP_STAT_INTR)
+ return 1;
+
+ udelay(2);
+ } while (--i);
+
+ printk(KERN_ERR PFX "PDMA timeout (sreg %02x).\n",
+ esp_read8(ESP_STATUS));
+ mep->error = 1;
+ return 1;
+}
+
+#define MAC_ESP_PDMA_LOOP(operands) \
+ asm volatile ( \
+ " tstw %2 \n" \
+ " jbeq 20f \n" \
+ "1: movew " operands " \n" \
+ "2: movew " operands " \n" \
+ "3: movew " operands " \n" \
+ "4: movew " operands " \n" \
+ "5: movew " operands " \n" \
+ "6: movew " operands " \n" \
+ "7: movew " operands " \n" \
+ "8: movew " operands " \n" \
+ "9: movew " operands " \n" \
+ "10: movew " operands " \n" \
+ "11: movew " operands " \n" \
+ "12: movew " operands " \n" \
+ "13: movew " operands " \n" \
+ "14: movew " operands " \n" \
+ "15: movew " operands " \n" \
+ "16: movew " operands " \n" \
+ " subqw #1,%2 \n" \
+ " jbne 1b \n" \
+ "20: tstw %3 \n" \
+ " jbeq 30f \n" \
+ "21: movew " operands " \n" \
+ " subqw #1,%3 \n" \
+ " jbne 21b \n" \
+ "30: tstw %4 \n" \
+ " jbeq 40f \n" \
+ "31: moveb " operands " \n" \
+ "32: nop \n" \
+ "40: \n" \
+ " \n" \
+ " .section __ex_table,\"a\" \n" \
+ " .align 4 \n" \
+ " .long 1b,40b \n" \
+ " .long 2b,40b \n" \
+ " .long 3b,40b \n" \
+ " .long 4b,40b \n" \
+ " .long 5b,40b \n" \
+ " .long 6b,40b \n" \
+ " .long 7b,40b \n" \
+ " .long 8b,40b \n" \
+ " .long 9b,40b \n" \
+ " .long 10b,40b \n" \
+ " .long 11b,40b \n" \
+ " .long 12b,40b \n" \
+ " .long 13b,40b \n" \
+ " .long 14b,40b \n" \
+ " .long 15b,40b \n" \
+ " .long 16b,40b \n" \
+ " .long 21b,40b \n" \
+ " .long 31b,40b \n" \
+ " .long 32b,40b \n" \
+ " .previous \n" \
+ : "+a" (addr) \
+ : "a" (mep->pdma_io), "r" (count32), "r" (count2), "g" (esp_count))
+
+static void mac_esp_send_pdma_cmd(struct esp *esp, u32 addr, u32 esp_count,
+ u32 dma_count, int write, u8 cmd)
+{
+ struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ mep->error = 0;
+
+ if (!write)
+ scsi_esp_cmd(esp, ESP_CMD_FLUSH);
+
+ esp_write8((esp_count >> 0) & 0xFF, ESP_TCLOW);
+ esp_write8((esp_count >> 8) & 0xFF, ESP_TCMED);
+
+ scsi_esp_cmd(esp, cmd);
+
+ do {
+ unsigned int count32 = esp_count >> 5;
+ unsigned int count2 = (esp_count & 0x1F) >> 1;
+ unsigned int start_addr = addr;
+
+ if (mac_esp_wait_for_dreq(esp))
+ break;
+
+ if (write) {
+ MAC_ESP_PDMA_LOOP("%1@,%0@+");
+
+ esp_count -= addr - start_addr;
+ } else {
+ unsigned int n;
+
+ MAC_ESP_PDMA_LOOP("%0@+,%1@");
+
+ if (mac_esp_wait_for_empty_fifo(esp))
+ break;
+
+ n = (esp_read8(ESP_TCMED) << 8) + esp_read8(ESP_TCLOW);
+ addr = start_addr + esp_count - n;
+ esp_count = n;
+ }
+ } while (esp_count);
+
+ local_irq_restore(flags);
+}
+
+/*
+ * Programmed IO routines follow.
+ */
+
+static inline int mac_esp_wait_for_fifo(struct esp *esp)
+{
+ int i = 500000;
+
+ do {
+ if (esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES)
+ return 0;
+
+ udelay(2);
+ } while (--i);
+
+ printk(KERN_ERR PFX "FIFO is empty (sreg %02x).\n",
+ esp_read8(ESP_STATUS));
+ return 1;
+}
+
+static inline int mac_esp_wait_for_intr(struct esp *esp)
+{
+ int i = 500000;
+
+ do {
+ esp->sreg = esp_read8(ESP_STATUS);
+ if (esp->sreg & ESP_STAT_INTR)
+ return 0;
+
+ udelay(2);
+ } while (--i);
+
+ printk(KERN_ERR PFX "IRQ timeout (sreg %02x).\n", esp->sreg);
+ return 1;
+}
+
+#define MAC_ESP_PIO_LOOP(operands, reg1) \
+ asm volatile ( \
+ "1: moveb " operands " \n" \
+ " subqw #1,%1 \n" \
+ " jbne 1b \n" \
+ : "+a" (addr), "+r" (reg1) \
+ : "a" (fifo))
+
+#define MAC_ESP_PIO_FILL(operands, reg1) \
+ asm volatile ( \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " moveb " operands " \n" \
+ " subqw #8,%1 \n" \
+ " subqw #8,%1 \n" \
+ : "+a" (addr), "+r" (reg1) \
+ : "a" (fifo))
+
+#define MAC_ESP_FIFO_SIZE 16
+
+static void mac_esp_send_pio_cmd(struct esp *esp, u32 addr, u32 esp_count,
+ u32 dma_count, int write, u8 cmd)
+{
+ unsigned long flags;
+ struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
+ u8 *fifo = esp->regs + ESP_FDATA * 16;
+//printk(">write %d, cmd 0x%02X, fifo %d, esp_count %d\n", write, cmd,esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES, esp_count);
+
+ local_irq_save(flags);
+
+ cmd &= ~ESP_CMD_DMA;
+ mep->error = 0;
+
+ if (write) {
+ scsi_esp_cmd(esp, cmd);
+
+ if (!mac_esp_wait_for_intr(esp)) {
+ if (mac_esp_wait_for_fifo(esp))
+ esp_count = 0;
+ } else
+ esp_count = 0;
+ } else {
+ scsi_esp_cmd(esp, ESP_CMD_FLUSH);
+
+ if (esp_count >= MAC_ESP_FIFO_SIZE)
+ MAC_ESP_PIO_FILL("%0@+,%2@", esp_count);
+ else
+ MAC_ESP_PIO_LOOP("%0@+,%2@", esp_count);
+
+ scsi_esp_cmd(esp, cmd);
+ }
+
+ while (esp_count) {
+ unsigned int n;
+
+ if (mac_esp_wait_for_intr(esp)) {
+ mep->error = 1;
+ break;
+ }
+
+ if (esp->sreg & ESP_STAT_SPAM) {
+ printk(KERN_ERR PFX "gross error.\n");
+ mep->error = 1;
+ break;
+ }
+
+ n = esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES;
+
+ if (write) {
+ if (n > esp_count)
+ n = esp_count;
+ esp_count -= n;
+
+ MAC_ESP_PIO_LOOP("%2@,%0@+", n);
+
+ if ((esp->sreg & ESP_STAT_PMASK) == ESP_STATP)
+ break;
+
+ if (esp_count) {
+ esp->ireg = esp_read8(ESP_INTRPT);
+ if (esp->ireg & ESP_INTR_DC)
+ break;
+
+ scsi_esp_cmd(esp, ESP_CMD_TI);
+ }
+ } else {
+ esp->ireg = esp_read8(ESP_INTRPT);
+ if (esp->ireg & ESP_INTR_DC)
+ break;
+
+ n = MAC_ESP_FIFO_SIZE - n;
+ if (esp_count < n)
+ n = esp_count;
+
+ if (n == MAC_ESP_FIFO_SIZE) {
+ MAC_ESP_PIO_FILL("%0@+,%2@", esp_count);
+ } else {
+ esp_count -= n;
+ MAC_ESP_PIO_LOOP("%0@+,%2@", n);
+ }
+
+ scsi_esp_cmd(esp, ESP_CMD_TI);
+ }
+ }
+
+ local_irq_restore(flags);
+}
+
+static int mac_esp_irq_pending(struct esp *esp)
+{
+ if (esp_read8(ESP_STATUS) & ESP_STAT_INTR)
+ return 1;
+ return 0;
+}
+
+static u32 mac_esp_dma_length_limit(struct esp *esp, u32 dma_addr, u32 dma_len)
+{
+ return dma_len > 0xFFFF ? 0xFFFF : dma_len;
+}
+
+static struct esp_driver_ops mac_esp_ops = {
+ .esp_write8 = mac_esp_write8,
+ .esp_read8 = mac_esp_read8,
+ .map_single = mac_esp_map_single,
+ .map_sg = mac_esp_map_sg,
+ .unmap_single = mac_esp_unmap_single,
+ .unmap_sg = mac_esp_unmap_sg,
+ .irq_pending = mac_esp_irq_pending,
+ .dma_length_limit = mac_esp_dma_length_limit,
+ .reset_dma = mac_esp_reset_dma,
+ .dma_drain = mac_esp_dma_drain,
+ .dma_invalidate = mac_esp_dma_invalidate,
+ .send_dma_cmd = mac_esp_send_pdma_cmd,
+ .dma_error = mac_esp_dma_error,
+};
+
+static int __devinit esp_mac_probe(struct platform_device *dev)
+{
+ struct scsi_host_template *tpnt = &scsi_esp_template;
+ struct Scsi_Host *host;
+ struct esp *esp;
+ int err;
+ int chips_present;
+ struct mac_esp_priv *mep;
+
+ switch (macintosh_config->scsi_type) {
+ case MAC_SCSI_QUADRA:
+ case MAC_SCSI_QUADRA3:
+ chips_present = 1;
+ break;
+ case MAC_SCSI_QUADRA2:
+ if ((macintosh_config->ident == MAC_MODEL_Q900) ||
+ (macintosh_config->ident == MAC_MODEL_Q950))
+ chips_present = 2;
+ else
+ chips_present = 1;
+ break;
+ default:
+ chips_present = 0;
+ }
+
+ if (dev->id + 1 > chips_present)
+ return -ENODEV;
+
+ host = scsi_host_alloc(tpnt, sizeof(struct esp));
+
+ err = -ENOMEM;
+ if (!host)
+ goto fail;
+
+ host->max_id = 8;
+ host->use_clustering = DISABLE_CLUSTERING;
+ esp = host_to_esp(host);
+
+ esp->host = host;
+ esp->dev = dev;
+
+ esp->command_block = kzalloc(16, GFP_KERNEL);
+ if (!esp->command_block)
+ goto fail_unlink;
+ esp->command_block_dma = (dma_addr_t)esp->command_block;
+
+ esp->scsi_id = 7;
+ host->this_id = esp->scsi_id;
+ esp->scsi_id_mask = 1 << esp->scsi_id;
+
+ mep = kzalloc(sizeof(struct mac_esp_priv), GFP_KERNEL);
+ if (!mep)
+ goto fail_free_command_block;
+ mep->esp = esp;
+ platform_set_drvdata(dev, mep);
+
+ switch (macintosh_config->scsi_type) {
+ case MAC_SCSI_QUADRA:
+ esp->cfreq = 16500000;
+ esp->regs = (void __iomem *)MAC_ESP_REGS_QUADRA;
+ mep->pdma_io = esp->regs + MAC_ESP_PDMA_IO_OFFSET;
+ mep->pdma_regs = NULL;
+ break;
+ case MAC_SCSI_QUADRA2:
+ esp->cfreq = 25000000;
+ esp->regs = (void __iomem *)(MAC_ESP_REGS_QUADRA2 +
+ dev->id * MAC_ESP_REGS_SPACING);
+ mep->pdma_io = esp->regs + MAC_ESP_PDMA_IO_OFFSET;
+ mep->pdma_regs = (void __iomem *)(MAC_ESP_PDMA_REG +
+ dev->id * MAC_ESP_PDMA_REG_SPACING);
+ nubus_writel(0x1d1, mep->pdma_regs);
+ break;
+ case MAC_SCSI_QUADRA3:
+ /* These quadras have a real DMA controller (the PSC) but we
+ * don't know how to drive it so we must use PIO instead.
+ */
+ esp->cfreq = 25000000;
+ esp->regs = (void __iomem *)MAC_ESP_REGS_QUADRA3;
+ mep->pdma_io = NULL;
+ mep->pdma_regs = NULL;
+ break;
+ }
+
+ esp->ops = &mac_esp_ops;
+ if (mep->pdma_io == NULL) {
+ printk(KERN_INFO PFX "using PIO for controller %d\n", dev->id);
+ esp_write8(0, ESP_TCLOW);
+ esp_write8(0, ESP_TCMED);
+ esp->flags = ESP_FLAG_DISABLE_SYNC;
+ mac_esp_ops.send_dma_cmd = mac_esp_send_pio_cmd;
+ } else {
+ printk(KERN_INFO PFX "using PDMA for controller %d\n", dev->id);
+ }
+
+ host->irq = IRQ_MAC_SCSI;
+ err = request_irq(host->irq, scsi_esp_intr,
+ IRQF_SHARED, "Mac ESP", esp);
+ if (err < 0)
+ goto fail_free_priv;
+
+ err = scsi_esp_register(esp, &dev->dev);
+ if (err)
+ goto fail_free_irq;
+
+ return 0;
+
+fail_free_irq:
+ free_irq(host->irq, esp);
+fail_free_priv:
+ kfree(mep);
+fail_free_command_block:
+ kfree(esp->command_block);
+fail_unlink:
+ scsi_host_put(host);
+fail:
+ return err;
+}
+
+static int __devexit esp_mac_remove(struct platform_device *dev)
+{
+ struct mac_esp_priv *mep = platform_get_drvdata(dev);
+ struct esp *esp = mep->esp;
+ unsigned int irq = esp->host->irq;
+
+ scsi_esp_unregister(esp);
+
+ free_irq(irq, esp);
+
+ kfree(esp->command_block);
+
+ scsi_host_put(esp->host);
+
+ kfree(mep);
+
+ return 0;
+}
+
+static struct platform_driver esp_mac_driver = {
+ .probe = esp_mac_probe,
+ .remove = __devexit_p(esp_mac_remove),
+ .driver = {
+ .name = DRV_MODULE_NAME,
+ },
+};
+
+static int __init mac_esp_init(void)
+{
+ int err;
+
+ if ((err = platform_driver_register(&esp_mac_driver)))
+ return err;
+
+ internal_esp = platform_device_alloc(DRV_MODULE_NAME, 0);
+ if (internal_esp && platform_device_add(internal_esp)) {
+ platform_device_put(internal_esp);
+ internal_esp = NULL;
+ }
+
+ external_esp = platform_device_alloc(DRV_MODULE_NAME, 1);
+ if (external_esp && platform_device_add(external_esp)) {
+ platform_device_put(external_esp);
+ external_esp = NULL;
+ }
+
+ if (internal_esp || external_esp) {
+ return 0;
+ } else {
+ platform_driver_unregister(&esp_mac_driver);
+ return -ENOMEM;
+ }
+}
+
+static void __exit mac_esp_exit(void)
+{
+ platform_driver_unregister(&esp_mac_driver);
+
+ if (internal_esp) {
+ platform_device_unregister(internal_esp);
+ internal_esp = NULL;
+ }
+ if (external_esp) {
+ platform_device_unregister(external_esp);
+ external_esp = NULL;
+ }
+}
+
+MODULE_DESCRIPTION("Mac ESP SCSI driver");
+MODULE_AUTHOR("Finn Thain <fthain@telegraphics.com.au>");
+MODULE_LICENSE("GPLv2");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(mac_esp_init);
+module_exit(mac_esp_exit);
Index: linux-2.6.22/drivers/scsi/sun_esp.c
===================================================================
--- linux-2.6.22.orig/drivers/scsi/sun_esp.c 2008-02-21 14:49:27.000000000 +1100
+++ linux-2.6.22/drivers/scsi/sun_esp.c 2008-02-21 14:49:48.000000000 +1100
@@ -461,18 +461,19 @@ static int sbus_esp_dma_error(struct esp
}
static const struct esp_driver_ops sbus_esp_ops = {
- .esp_write8 = sbus_esp_write8,
- .esp_read8 = sbus_esp_read8,
- .map_single = sbus_esp_map_single,
- .map_sg = sbus_esp_map_sg,
- .unmap_single = sbus_esp_unmap_single,
- .unmap_sg = sbus_esp_unmap_sg,
- .irq_pending = sbus_esp_irq_pending,
- .reset_dma = sbus_esp_reset_dma,
- .dma_drain = sbus_esp_dma_drain,
- .dma_invalidate = sbus_esp_dma_invalidate,
- .send_dma_cmd = sbus_esp_send_dma_cmd,
- .dma_error = sbus_esp_dma_error,
+ .esp_write8 = sbus_esp_write8,
+ .esp_read8 = sbus_esp_read8,
+ .map_single = sbus_esp_map_single,
+ .map_sg = sbus_esp_map_sg,
+ .unmap_single = sbus_esp_unmap_single,
+ .unmap_sg = sbus_esp_unmap_sg,
+ .irq_pending = sbus_esp_irq_pending,
+ .dma_length_limit = esp_dma_length_limit,
+ .reset_dma = sbus_esp_reset_dma,
+ .dma_drain = sbus_esp_dma_drain,
+ .dma_invalidate = sbus_esp_dma_invalidate,
+ .send_dma_cmd = sbus_esp_send_dma_cmd,
+ .dma_error = sbus_esp_dma_error,
};
static int __devinit esp_sbus_probe_one(struct device *dev,
Index: linux-2.6.22/drivers/scsi/jazz_esp.c
===================================================================
--- linux-2.6.22.orig/drivers/scsi/jazz_esp.c 2008-02-21 14:49:27.000000000 +1100
+++ linux-2.6.22/drivers/scsi/jazz_esp.c 2008-02-21 14:49:48.000000000 +1100
@@ -114,18 +114,19 @@ static int jazz_esp_dma_error(struct esp
}
static const struct esp_driver_ops jazz_esp_ops = {
- .esp_write8 = jazz_esp_write8,
- .esp_read8 = jazz_esp_read8,
- .map_single = jazz_esp_map_single,
- .map_sg = jazz_esp_map_sg,
- .unmap_single = jazz_esp_unmap_single,
- .unmap_sg = jazz_esp_unmap_sg,
- .irq_pending = jazz_esp_irq_pending,
- .reset_dma = jazz_esp_reset_dma,
- .dma_drain = jazz_esp_dma_drain,
- .dma_invalidate = jazz_esp_dma_invalidate,
- .send_dma_cmd = jazz_esp_send_dma_cmd,
- .dma_error = jazz_esp_dma_error,
+ .esp_write8 = jazz_esp_write8,
+ .esp_read8 = jazz_esp_read8,
+ .map_single = jazz_esp_map_single,
+ .map_sg = jazz_esp_map_sg,
+ .unmap_single = jazz_esp_unmap_single,
+ .unmap_sg = jazz_esp_unmap_sg,
+ .irq_pending = jazz_esp_irq_pending,
+ .dma_length_limit = esp_dma_length_limit,
+ .reset_dma = jazz_esp_reset_dma,
+ .dma_drain = jazz_esp_dma_drain,
+ .dma_invalidate = jazz_esp_dma_invalidate,
+ .send_dma_cmd = jazz_esp_send_dma_cmd,
+ .dma_error = jazz_esp_dma_error,
};
static int __devinit esp_jazz_probe(struct platform_device *dev)
Index: linux/drivers/scsi/sun3x_esp.c
===================================================================
--- linux.orig/drivers/scsi/sun3x_esp.c 2008-02-21 14:33:43.000000000 +1100
+++ linux/drivers/scsi/sun3x_esp.c 2008-02-21 14:36:38.000000000 +1100
@@ -179,18 +179,19 @@ static int sun3x_esp_dma_error(struct es
}
static const struct esp_driver_ops sun3x_esp_ops = {
- .esp_write8 = sun3x_esp_write8,
- .esp_read8 = sun3x_esp_read8,
- .map_single = sun3x_esp_map_single,
- .map_sg = sun3x_esp_map_sg,
- .unmap_single = sun3x_esp_unmap_single,
- .unmap_sg = sun3x_esp_unmap_sg,
- .irq_pending = sun3x_esp_irq_pending,
- .reset_dma = sun3x_esp_reset_dma,
- .dma_drain = sun3x_esp_dma_drain,
- .dma_invalidate = sun3x_esp_dma_invalidate,
- .send_dma_cmd = sun3x_esp_send_dma_cmd,
- .dma_error = sun3x_esp_dma_error,
+ .esp_write8 = sun3x_esp_write8,
+ .esp_read8 = sun3x_esp_read8,
+ .map_single = sun3x_esp_map_single,
+ .map_sg = sun3x_esp_map_sg,
+ .unmap_single = sun3x_esp_unmap_single,
+ .unmap_sg = sun3x_esp_unmap_sg,
+ .irq_pending = sun3x_esp_irq_pending,
+ .dma_length_limit = esp_dma_length_limit,
+ .reset_dma = sun3x_esp_reset_dma,
+ .dma_drain = sun3x_esp_dma_drain,
+ .dma_invalidate = sun3x_esp_dma_invalidate,
+ .send_dma_cmd = sun3x_esp_send_dma_cmd,
+ .dma_error = sun3x_esp_dma_error,
};
static int __devinit esp_sun3x_probe(struct platform_device *dev)
^ permalink raw reply [flat|nested] 18+ messages in thread
end of thread, other threads:[~2008-02-21 8:21 UTC | newest]
Thread overview: 18+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-01-03 15:17 [PATCH 0/1] Remove of old NCR53C9x/esp family of drivers Boaz Harrosh
2008-01-03 15:40 ` [PATCH 1/1] " Boaz Harrosh
2008-01-03 18:16 ` James Bottomley
2008-01-03 19:05 ` Geert Uytterhoeven
2008-01-03 19:19 ` James Bottomley
2008-01-03 19:46 ` Michael Schmitz
2008-01-03 23:02 ` David Miller
2008-01-04 9:59 ` Geert Uytterhoeven
2008-01-04 11:05 ` Finn Thain
2008-01-04 11:49 ` David Miller
2008-01-05 5:07 ` Finn Thain
2008-02-21 7:59 ` mac_esp and PIO, was " Finn Thain
2008-01-07 6:07 ` Kars de Jong
2008-01-31 18:08 ` James Bottomley
2008-01-31 18:55 ` Geert Uytterhoeven
2008-01-31 19:06 ` Boaz Harrosh
2008-01-31 19:31 ` James Bottomley
2008-02-08 6:04 ` Christoph Hellwig
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