From: Finn Thain <fthain@telegraphics.com.au>
To: "James E.J. Bottomley" <JBottomley@odin.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Michael Schmitz <schmitzmic@gmail.com>,
linux-m68k@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org,
Russell King <linux@arm.linux.org.uk>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 24/78] ncr5380: Implement NCR5380_dma_xfer_len and remove LIMIT_TRANSFERSIZE macro
Date: Sun, 03 Jan 2016 16:05:25 +1100 [thread overview]
Message-ID: <20160103050507.391774791@telegraphics.com.au> (raw)
In-Reply-To: 20160103050501.042035135@telegraphics.com.au
[-- Attachment #1: ncr5380-implement-NCR5380_dma_xfer_len --]
[-- Type: text/plain, Size: 9758 bytes --]
Follow the example of the atari_NCR5380.c core driver and adopt the
NCR5380_dma_xfer_len() hook. Implement NCR5380_dma_xfer_len() for dtc.c
and g_NCR5380.c to take care of the limitations of these cards. Keep the
default for drivers using PSEUDO_DMA.
Eliminate the unused macro LIMIT_TRANSFERSIZE.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
---
drivers/scsi/NCR5380.c | 32 +++++---------------------------
drivers/scsi/arm/cumana_1.c | 3 +++
drivers/scsi/arm/oak.c | 2 ++
drivers/scsi/atari_NCR5380.c | 8 +++++---
drivers/scsi/dtc.c | 14 ++++++++++++++
drivers/scsi/dtc.h | 3 +++
drivers/scsi/g_NCR5380.c | 15 +++++++++++++++
drivers/scsi/g_NCR5380.h | 3 +++
drivers/scsi/mac_scsi.c | 1 +
drivers/scsi/pas16.h | 2 ++
drivers/scsi/t128.h | 2 ++
11 files changed, 55 insertions(+), 30 deletions(-)
Index: linux/drivers/scsi/NCR5380.c
===================================================================
--- linux.orig/drivers/scsi/NCR5380.c 2016-01-03 16:03:30.000000000 +1100
+++ linux/drivers/scsi/NCR5380.c 2016-01-03 16:03:31.000000000 +1100
@@ -201,11 +201,6 @@
* DONT_USE_INTR - if defined, never use interrupts, even if we probe or
* override-configure an IRQ.
*
- * LIMIT_TRANSFERSIZE - if defined, limit the pseudo-dma transfers to 512
- * bytes at a time. Since interrupts are disabled by default during
- * these transfers, we might need this to give reasonable interrupt
- * service time if the transfer size gets too large.
- *
* LINKED - if defined, linked commands are supported.
*
* PSEUDO_DMA - if defined, PSEUDO DMA is used during the data transfer phases.
@@ -2000,29 +1995,12 @@ static void NCR5380_information_transfer
*/
#if defined(PSEUDO_DMA) || defined(REAL_DMA_POLL)
- /* KLL
- * PSEUDO_DMA is defined here. If this is the g_NCR5380
- * driver then it will always be defined, so the
- * FLAG_NO_PSEUDO_DMA is used to inhibit PDMA in the base
- * NCR5380 case. I think this is a fairly clean solution.
- * We supplement these 2 if's with the flag.
- */
-#ifdef NCR5380_dma_xfer_len
- if (!cmd->device->borken && !(hostdata->flags & FLAG_NO_PSEUDO_DMA) && (transfersize = NCR5380_dma_xfer_len(instance, cmd)) != 0) {
-#else
- transfersize = cmd->transfersize;
+ transfersize = 0;
+ if (!cmd->device->borken &&
+ !(hostdata->flags & FLAG_NO_PSEUDO_DMA))
+ transfersize = NCR5380_dma_xfer_len(instance, cmd, phase);
-#ifdef LIMIT_TRANSFERSIZE /* If we have problems with interrupt service */
- if (transfersize > 512)
- transfersize = 512;
-#endif /* LIMIT_TRANSFERSIZE */
-
- if (!cmd->device->borken && transfersize && !(hostdata->flags & FLAG_NO_PSEUDO_DMA) && cmd->SCp.this_residual && !(cmd->SCp.this_residual % transfersize)) {
- /* Limit transfers to 32K, for xx400 & xx406
- * pseudoDMA that transfers in 128 bytes blocks. */
- if (transfersize > 32 * 1024)
- transfersize = 32 * 1024;
-#endif
+ if (transfersize) {
len = transfersize;
if (NCR5380_transfer_dma(instance, &phase, &len, (unsigned char **) &cmd->SCp.ptr)) {
/*
Index: linux/drivers/scsi/atari_NCR5380.c
===================================================================
--- linux.orig/drivers/scsi/atari_NCR5380.c 2016-01-03 16:03:30.000000000 +1100
+++ linux/drivers/scsi/atari_NCR5380.c 2016-01-03 16:03:31.000000000 +1100
@@ -2170,11 +2170,13 @@ static void NCR5380_information_transfer
*/
#if defined(REAL_DMA)
- if (
#if !defined(CONFIG_SUN3)
- !cmd->device->borken &&
+ transfersize = 0;
+ if (!cmd->device->borken)
#endif
- (transfersize = NCR5380_dma_xfer_len(instance, cmd, phase)) >= DMA_MIN_SIZE) {
+ transfersize = NCR5380_dma_xfer_len(instance, cmd, phase);
+
+ if (transfersize >= DMA_MIN_SIZE) {
len = transfersize;
cmd->SCp.phase = phase;
if (NCR5380_transfer_dma(instance, &phase,
Index: linux/drivers/scsi/dtc.c
===================================================================
--- linux.orig/drivers/scsi/dtc.c 2016-01-03 16:03:23.000000000 +1100
+++ linux/drivers/scsi/dtc.c 2016-01-03 16:03:31.000000000 +1100
@@ -419,6 +419,20 @@ static inline int NCR5380_pwrite(struct
return (0);
}
+static int dtc_dma_xfer_len(struct scsi_cmnd *cmd)
+{
+ int transfersize = cmd->transfersize;
+
+ /* Limit transfers to 32K, for xx400 & xx406
+ * pseudoDMA that transfers in 128 bytes blocks.
+ */
+ if (transfersize > 32 * 1024 && cmd->SCp.this_residual &&
+ !(cmd->SCp.this_residual % transfersize))
+ transfersize = 32 * 1024;
+
+ return transfersize;
+}
+
MODULE_LICENSE("GPL");
#include "NCR5380.c"
Index: linux/drivers/scsi/g_NCR5380.c
===================================================================
--- linux.orig/drivers/scsi/g_NCR5380.c 2016-01-03 16:03:23.000000000 +1100
+++ linux/drivers/scsi/g_NCR5380.c 2016-01-03 16:03:31.000000000 +1100
@@ -699,6 +699,21 @@ static inline int NCR5380_pwrite(struct
; // TIMEOUT
return 0;
}
+
+static int generic_NCR5380_dma_xfer_len(struct scsi_cmnd *cmd)
+{
+ int transfersize = cmd->transfersize;
+
+ /* Limit transfers to 32K, for xx400 & xx406
+ * pseudoDMA that transfers in 128 bytes blocks.
+ */
+ if (transfersize > 32 * 1024 && cmd->SCp.this_residual &&
+ !(cmd->SCp.this_residual % transfersize))
+ transfersize = 32 * 1024;
+
+ return transfersize;
+}
+
#endif /* PSEUDO_DMA */
/*
Index: linux/drivers/scsi/g_NCR5380.h
===================================================================
--- linux.orig/drivers/scsi/g_NCR5380.h 2016-01-03 16:03:06.000000000 +1100
+++ linux/drivers/scsi/g_NCR5380.h 2016-01-03 16:03:31.000000000 +1100
@@ -73,6 +73,9 @@
#endif
+#define NCR5380_dma_xfer_len(instance, cmd, phase) \
+ generic_NCR5380_dma_xfer_len(cmd)
+
#define NCR5380_intr generic_NCR5380_intr
#define NCR5380_queue_command generic_NCR5380_queue_command
#define NCR5380_abort generic_NCR5380_abort
Index: linux/drivers/scsi/dtc.h
===================================================================
--- linux.orig/drivers/scsi/dtc.h 2016-01-03 16:02:56.000000000 +1100
+++ linux/drivers/scsi/dtc.h 2016-01-03 16:03:31.000000000 +1100
@@ -27,6 +27,9 @@
#define NCR5380_read(reg) (readb(DTC_address(reg)))
#define NCR5380_write(reg, value) (writeb(value, DTC_address(reg)))
+#define NCR5380_dma_xfer_len(instance, cmd, phase) \
+ dtc_dma_xfer_len(cmd)
+
#define NCR5380_intr dtc_intr
#define NCR5380_queue_command dtc_queue_command
#define NCR5380_abort dtc_abort
Index: linux/drivers/scsi/arm/cumana_1.c
===================================================================
--- linux.orig/drivers/scsi/arm/cumana_1.c 2016-01-03 16:03:23.000000000 +1100
+++ linux/drivers/scsi/arm/cumana_1.c 2016-01-03 16:03:31.000000000 +1100
@@ -22,6 +22,9 @@
#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
#define NCR5380_read(reg) cumanascsi_read(instance, reg)
#define NCR5380_write(reg, value) cumanascsi_write(instance, reg, value)
+
+#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
+
#define NCR5380_intr cumanascsi_intr
#define NCR5380_queue_command cumanascsi_queue_command
#define NCR5380_info cumanascsi_info
Index: linux/drivers/scsi/arm/oak.c
===================================================================
--- linux.orig/drivers/scsi/arm/oak.c 2016-01-03 16:03:23.000000000 +1100
+++ linux/drivers/scsi/arm/oak.c 2016-01-03 16:03:31.000000000 +1100
@@ -26,6 +26,8 @@
#define NCR5380_write(reg, value) \
writeb(value, priv(instance)->base + ((reg) << 2))
+#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
+
#define NCR5380_queue_command oakscsi_queue_command
#define NCR5380_info oakscsi_info
#define NCR5380_show_info oakscsi_show_info
Index: linux/drivers/scsi/mac_scsi.c
===================================================================
--- linux.orig/drivers/scsi/mac_scsi.c 2016-01-03 16:03:23.000000000 +1100
+++ linux/drivers/scsi/mac_scsi.c 2016-01-03 16:03:31.000000000 +1100
@@ -38,6 +38,7 @@
#define NCR5380_pread macscsi_pread
#define NCR5380_pwrite macscsi_pwrite
+#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
#define NCR5380_intr macscsi_intr
#define NCR5380_queue_command macscsi_queue_command
Index: linux/drivers/scsi/pas16.h
===================================================================
--- linux.orig/drivers/scsi/pas16.h 2016-01-03 16:02:56.000000000 +1100
+++ linux/drivers/scsi/pas16.h 2016-01-03 16:03:31.000000000 +1100
@@ -110,6 +110,8 @@
#define NCR5380_read(reg) ( inb(PAS16_io_port(reg)) )
#define NCR5380_write(reg, value) ( outb((value),PAS16_io_port(reg)) )
+#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
+
#define NCR5380_intr pas16_intr
#define NCR5380_queue_command pas16_queue_command
#define NCR5380_abort pas16_abort
Index: linux/drivers/scsi/t128.h
===================================================================
--- linux.orig/drivers/scsi/t128.h 2016-01-03 16:02:56.000000000 +1100
+++ linux/drivers/scsi/t128.h 2016-01-03 16:03:31.000000000 +1100
@@ -84,6 +84,8 @@
#define NCR5380_read(reg) readb(T128_address(reg))
#define NCR5380_write(reg, value) writeb((value),(T128_address(reg)))
+#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
+
#define NCR5380_intr t128_intr
#define NCR5380_queue_command t128_queue_command
#define NCR5380_abort t128_abort
next prev parent reply other threads:[~2016-01-03 5:05 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-03 5:05 [PATCH v4 00/78] More fixes, cleanup and modernization for NCR5380 drivers Finn Thain
2016-01-03 5:05 ` [PATCH v4 01/78] atari_scsi: Fix SCSI host ID setting Finn Thain
2016-01-03 5:05 ` [PATCH v4 02/78] ncr5380: Remove redundant static variable initializers Finn Thain
2016-01-03 5:05 ` [PATCH v4 03/78] ncr5380: Eliminate PDEBUG*, TDEBUG* and DTCDEBUG* macros Finn Thain
2016-01-03 5:05 ` [PATCH v4 04/78] ncr5380: Remove more pointless macros Finn Thain
2016-01-03 5:05 ` [PATCH v4 05/78] ncr5380: Remove NCR5380_local_declare and NCR5380_setup macros Finn Thain
2016-01-03 5:05 ` [PATCH v4 06/78] ncr5380: Remove NCR5380_instance_name macro Finn Thain
2016-01-03 5:05 ` [PATCH v4 07/78] ncr5380: Split NCR5380_init() into two functions Finn Thain
2016-01-03 5:05 ` [PATCH v4 08/78] ncr5380: Move NCR53C400-specific code Finn Thain
2016-01-03 5:05 ` [PATCH v4 09/78] atari_NCR5380: Reset bus on driver initialization if required Finn Thain
2016-01-03 5:05 ` [PATCH v4 10/78] atari_NCR5380: Remove RESET_BOOT, CONFIG_ATARI_SCSI_TOSHIBA_DELAY and CONFIG_ATARI_SCSI_RESET_BOOT Finn Thain
2016-01-03 5:05 ` [PATCH v4 11/78] ncr5380: Simplify bus reset handlers Finn Thain
2016-01-03 5:05 ` [PATCH v4 12/78] ncr5380: Remove unused hostdata->aborted flag Finn Thain
2016-01-03 5:05 ` [PATCH v4 13/78] ncr5380: Remove redundant register writes Finn Thain
2016-01-03 5:05 ` [PATCH v4 14/78] ncr5380: Use return instead of goto in NCR5380_select() Finn Thain
2016-01-03 5:05 ` [PATCH v4 15/78] ncr5380: Always escalate bad target time-out " Finn Thain
2016-01-03 5:05 ` [PATCH v4 16/78] ncr5380: Proceed with next command after NCR5380_select() calls scsi_done Finn Thain
2016-01-03 5:05 ` [PATCH v4 17/78] ncr5380: Keep BSY asserted when entering SELECTION phase Finn Thain
2016-01-03 5:05 ` [PATCH v4 18/78] ncr5380: Eliminate USLEEP_WAITLONG delay Finn Thain
2016-01-03 5:05 ` [PATCH v4 19/78] ncr5380: Cleanup bogus {request, release}_region() calls Finn Thain
2016-01-03 5:05 ` [PATCH v4 20/78] ncr5380: Introduce unbound workqueue Finn Thain
2016-01-03 5:05 ` [PATCH v4 21/78] ncr5380: Sleep when polling, if possible Finn Thain
2016-01-03 5:05 ` [PATCH v4 22/78] ncr5380: Eliminate selecting state Finn Thain
2016-01-03 5:05 ` [PATCH v4 23/78] ncr5380: Always retry arbitration and selection Finn Thain
2016-01-03 5:05 ` Finn Thain [this message]
2016-01-03 5:05 ` [PATCH v4 25/78] ncr5380: Rework disconnect versus poll logic Finn Thain
2016-01-03 5:05 ` [PATCH v4 26/78] ncr5380: Fix NCR5380_transfer_pio() result Finn Thain
2016-01-03 5:05 ` [PATCH v4 27/78] ncr5380: Add missing lock in eh_abort_handler Finn Thain
2016-01-03 5:05 ` [PATCH v4 28/78] ncr5380: Drop DEF_SCSI_QCMD macro Finn Thain
2016-01-03 5:05 ` [PATCH v4 29/78] ncr5380: Remove references to linked commands Finn Thain
2016-01-03 5:05 ` [PATCH v4 30/78] ncr5380: Add missing break after case MESSAGE_REJECT Finn Thain
2016-01-03 5:05 ` [PATCH v4 31/78] ncr5380: Fix !REQ timeout in do_abort() Finn Thain
2016-01-03 5:05 ` [PATCH v4 32/78] ncr5380: Fix bus phase " Finn Thain
2016-01-03 5:05 ` [PATCH v4 33/78] atari_NCR5380: Set do_abort() timeouts Finn Thain
2016-01-03 5:05 ` [PATCH v4 34/78] atari_NCR5380: Use arbitration timeout Finn Thain
2016-01-24 10:38 ` Geert Uytterhoeven
2016-01-25 2:45 ` Finn Thain
2016-01-25 8:05 ` Geert Uytterhoeven
2016-01-25 18:28 ` Andreas Schwab
2016-01-25 19:56 ` Michael Schmitz
2016-01-26 0:18 ` Finn Thain
2016-01-26 11:13 ` Geert Uytterhoeven
2016-01-03 5:05 ` [PATCH v4 35/78] ncr5380: Dont wait for BUS FREE after disconnect Finn Thain
2016-01-03 5:05 ` [PATCH v4 36/78] ncr5380: Use work_struct instead of delayed_work Finn Thain
2016-01-03 5:05 ` [PATCH v4 37/78] ncr5380: Standardize work queueing algorithm Finn Thain
2016-01-03 5:05 ` [PATCH v4 38/78] ncr5380: Remove UNSAFE macro Finn Thain
2016-01-03 5:05 ` [PATCH v4 39/78] ncr5380: Standardize interrupt handling Finn Thain
2016-01-03 5:05 ` [PATCH v4 40/78] ncr5380: Introduce NCR5380_poll_politely2 Finn Thain
2016-01-03 5:05 ` [PATCH v4 41/78] ncr5380: Replace redundant flags with FLAG_NO_DMA_FIXUP Finn Thain
2016-01-03 5:05 ` [PATCH v4 42/78] ncr5380: Replace READ_OVERRUNS macro with FLAG_NO_DMA_FIXUPS Finn Thain
2016-01-03 5:05 ` [PATCH v4 43/78] ncr5380: Standardize reselection handling Finn Thain
2016-01-03 5:05 ` [PATCH v4 44/78] ncr5380: Fix off-by-one bug in extended_msg[] bounds check Finn Thain
2016-01-03 5:05 ` [PATCH v4 45/78] ncr5380: Cleanup #include directives Finn Thain
2016-01-03 5:05 ` [PATCH v4 46/78] ncr5380: Fix NDEBUG_NO_DATAOUT flag Finn Thain
2016-01-03 5:05 ` [PATCH v4 47/78] ncr5380: Fix and cleanup scsi_host_template initializers Finn Thain
2016-01-03 5:05 ` [PATCH v4 48/78] atari_NCR5380: Fix queue_size limit Finn Thain
2016-01-03 5:05 ` [PATCH v4 49/78] ncr5380: Remove redundant ICR_ARBITRATION_LOST test and eliminate FLAG_DTC3181E Finn Thain
2016-01-03 5:05 ` [PATCH v4 50/78] ncr5380: Change instance->host_lock to hostdata->lock Finn Thain
2016-01-03 5:05 ` [PATCH v4 51/78] ncr5380: Remove command list debug code Finn Thain
2016-01-03 5:05 ` [PATCH v4 52/78] ncr5380: Remove H_NO macro and introduce dsprintk Finn Thain
2016-01-03 5:05 ` [PATCH v4 53/78] ncr5380: Use shost_priv helper Finn Thain
2016-01-03 5:05 ` [PATCH v4 54/78] ncr5380: Use dsprintk() for queue debugging Finn Thain
2016-01-03 5:05 ` [PATCH v4 55/78] ncr5380: Remove LIST and REMOVE macros Finn Thain
2016-01-03 5:05 ` [PATCH v4 56/78] ncr5380: Remove redundant volatile qualifiers Finn Thain
2016-01-03 5:05 ` [PATCH v4 57/78] ncr5380: Use standard list data structure Finn Thain
2016-01-03 5:05 ` [PATCH v4 58/78] ncr5380: Refactor command completion Finn Thain
2016-01-03 5:06 ` [PATCH v4 59/78] ncr5380: Fix autosense bugs Finn Thain
2016-01-03 5:06 ` [PATCH v4 60/78] ncr5380: Implement new eh_abort_handler Finn Thain
2016-01-03 5:06 ` [PATCH v4 61/78] ncr5380: Fix EH during arbitration and selection Finn Thain
2016-01-03 5:06 ` [PATCH v4 62/78] ncr5380: Implement new eh_bus_reset_handler Finn Thain
2016-01-03 5:06 ` [PATCH v4 63/78] atari_NCR5380: Remove HOSTNO macro from printk() and seq_printf() calls Finn Thain
2016-01-03 5:06 ` [PATCH v4 64/78] atari_NCR5380: Eliminate HOSTNO macro Finn Thain
2016-01-03 5:06 ` [PATCH v4 65/78] atari_scsi, sun3_scsi: Remove global Scsi_Host pointer Finn Thain
2016-01-03 5:06 ` [PATCH v4 66/78] ncr5380: Fix soft lockups Finn Thain
2016-01-03 5:06 ` [PATCH v4 67/78] ncr5380: Cleanup comments Finn Thain
2016-01-03 5:06 ` [PATCH v4 68/78] ncr5380: Fix trailing whitespace using regexp Finn Thain
2016-01-03 5:06 ` [PATCH v4 69/78] ncr5380: Fix whitespace in comments " Finn Thain
2016-01-03 7:54 ` Joe Perches
2016-01-03 8:17 ` Finn Thain
2016-01-03 14:10 ` One Thousand Gnomes
2016-01-03 18:20 ` Joe Perches
2016-01-03 21:29 ` One Thousand Gnomes
2016-01-03 21:46 ` Joe Perches
[not found] ` <20160103220505.7734a879@lxorguk.ukuu.org.uk>
2016-01-03 22:13 ` Joe Perches
2016-01-03 5:06 ` [PATCH v4 70/78] ncr5380: Merge changes from atari_NCR5380.c Finn Thain
2016-01-03 5:06 ` [PATCH v4 71/78] atari_NCR5380: Merge changes from NCR5380.c Finn Thain
2016-01-03 5:06 ` [PATCH v4 72/78] ncr5380: Cleanup whitespace and parentheses Finn Thain
2016-01-03 5:06 ` [PATCH v4 73/78] ncr5380: Fix pseudo DMA transfers on 53C400 Finn Thain
2016-01-03 5:06 ` [PATCH v4 74/78] ncr5380: Use runtime register mapping Finn Thain
2016-01-03 5:06 ` [PATCH v4 75/78] ncr5380: Enable PDMA for NCR53C400A Finn Thain
2016-01-03 5:06 ` [PATCH v4 76/78] ncr5380: Enable PDMA for DTC chips Finn Thain
2016-01-03 5:06 ` [PATCH v4 77/78] ncr5380: Fix wait for 53C80 registers registers after PDMA Finn Thain
2016-01-03 5:06 ` [PATCH v4 78/78] ncr5380: Add support for HP C2502 Finn Thain
2016-01-07 2:53 ` [PATCH v4 00/78] More fixes, cleanup and modernization for NCR5380 drivers Martin K. Petersen
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