* [RFC PATCH 1/4] fdomain: Resurrect driver (core)
2019-04-22 17:33 [RFC PATCH 0/4] fdomain: Resurrect driver (modular version) Ondrej Zary
@ 2019-04-22 17:33 ` Ondrej Zary
2019-04-24 6:02 ` Christoph Hellwig
2019-04-22 17:33 ` [RFC PATCH 2/4] fdomain: Resurrect driver (PCI support) Ondrej Zary
` (2 subsequent siblings)
3 siblings, 1 reply; 9+ messages in thread
From: Ondrej Zary @ 2019-04-22 17:33 UTC (permalink / raw)
To: Rik Faith, David A . Hinds; +Cc: linux-scsi, linux-kernel
Future Domain TMC-16xx/TMC-3260 SCSI driver.
This is the core driver, common for PCI, ISA and PCMCIA cards.
Signed-off-by: Ondrej Zary <linux@zary.sk>
---
drivers/scsi/Kconfig | 4 +
drivers/scsi/Makefile | 1 +
drivers/scsi/fdomain.c | 666 +++++++++++++++++++++++++++++++++++++++++++++++++
drivers/scsi/fdomain.h | 25 ++
4 files changed, 696 insertions(+)
create mode 100644 drivers/scsi/fdomain.c
create mode 100644 drivers/scsi/fdomain.h
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index d528018e6fa8..3d6b1f47cbb5 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -663,6 +663,10 @@ config SCSI_DMX3191D
To compile this driver as a module, choose M here: the
module will be called dmx3191d.
+config SCSI_FDOMAIN
+ tristate
+ depends on SCSI
+
config SCSI_GDTH
tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support"
depends on PCI && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 8826111fdf4a..b8fbc6d2de54 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -76,6 +76,7 @@ obj-$(CONFIG_SCSI_AIC94XX) += aic94xx/
obj-$(CONFIG_SCSI_PM8001) += pm8001/
obj-$(CONFIG_SCSI_ISCI) += isci/
obj-$(CONFIG_SCSI_IPS) += ips.o
+obj-$(CONFIG_SCSI_FDOMAIN) += fdomain.o
obj-$(CONFIG_SCSI_GENERIC_NCR5380) += g_NCR5380.o
obj-$(CONFIG_SCSI_QLOGIC_FAS) += qlogicfas408.o qlogicfas.o
obj-$(CONFIG_PCMCIA_QLOGIC) += qlogicfas408.o
diff --git a/drivers/scsi/fdomain.c b/drivers/scsi/fdomain.c
new file mode 100644
index 000000000000..19ae4e0bd00e
--- /dev/null
+++ b/drivers/scsi/fdomain.c
@@ -0,0 +1,666 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for Future Domain TMC-16x0 and TMC-3260 SCSI host adapters
+ * Copyright 2019 Ondrej Zary
+ *
+ * Original driver by
+ * Rickard E. Faith, faith@cs.unc.edu
+ *
+ * Future Domain BIOS versions supported for autodetect:
+ * 2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61
+ * Chips supported:
+ * TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70
+ * Boards supported:
+ * Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX
+ * Future Domain TMC-3260 (PCI)
+ * Quantum ISA-200S, ISA-250MG
+ * Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead]
+ * IBM ?
+ *
+ * NOTE:
+ *
+ * The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it.
+ * Use the aic7xxx driver for this board.
+ *
+ * The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right
+ * driver for that card. Unfortunately, the boxes will probably just say
+ * "2920", so you'll have to look on the card for a Future Domain logo, or a
+ * letter after the 2920.
+ *
+ * If you have a TMC-8xx or TMC-9xx board, then this is not the driver for
+ * your board.
+ *
+ * DESCRIPTION:
+ *
+ * This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680
+ * TMC-1650/1670, and TMC-3260 SCSI host adapters. The 1650 and 1670 have a
+ * 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin
+ * high-density external connector. The 1670 and 1680 have floppy disk
+ * controllers built in. The TMC-3260 is a PCI bus card.
+ *
+ * Future Domain's older boards are based on the TMC-1800 chip, and this
+ * driver was originally written for a TMC-1680 board with the TMC-1800 chip.
+ * More recently, boards are being produced with the TMC-18C50 and TMC-18C30
+ * chips.
+ *
+ * Please note that the drive ordering that Future Domain implemented in BIOS
+ * versions 3.4 and 3.5 is the opposite of the order (currently) used by the
+ * rest of the SCSI industry.
+ *
+ *
+ * REFERENCES USED:
+ *
+ * "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation,
+ * 1990.
+ *
+ * "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain
+ * Corporation, January 1992.
+ *
+ * "LXT SCSI Products: Specifications and OEM Technical Manual (Revision
+ * B/September 1991)", Maxtor Corporation, 1991.
+ *
+ * "7213S product Manual (Revision P3)", Maxtor Corporation, 1992.
+ *
+ * "Draft Proposed American National Standard: Small Computer System
+ * Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109,
+ * revision 10h, October 17, 1991)
+ *
+ * Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric
+ * Youngdale (ericy@cais.com), 1992.
+ *
+ * Private communication, Tuong Le (Future Domain Engineering department),
+ * 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and
+ * TMC-18C30 detection.)
+ *
+ * Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page
+ * 60 (2.39: Disk Partition Table Layout).
+ *
+ * "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page
+ * 6-1.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/workqueue.h>
+#include <scsi/scsicam.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include "fdomain.h"
+
+/* FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
+ * 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by
+ * the SCSI device, an interrupt will be raised. Therefore, this could be as
+ * low as 0, or as high as 16. Note, however, that values which are too high
+ * or too low seem to prevent any interrupts from occurring, and thereby lock
+ * up the machine.
+ */
+#define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */
+#define PARITY_MASK 0x08 /* Parity enabled, 0x00 = disabled */
+
+static unsigned short irqs[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
+
+enum chip_type {
+ unknown = 0x00,
+ tmc1800 = 0x01,
+ tmc18c50 = 0x02,
+ tmc18c30 = 0x03,
+};
+
+enum {
+ in_arbitration = 0x02,
+ in_selection = 0x04,
+ in_other = 0x08,
+ disconnect = 0x10,
+ aborted = 0x20,
+ sent_ident = 0x40,
+};
+
+enum in_port_type {
+ Read_SCSI_Data = 0,
+ SCSI_Status = 1,
+ TMC_Status = 2,
+ FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
+ Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
+ LSB_ID_Code = 5,
+ MSB_ID_Code = 6,
+ Read_Loopback = 7,
+ SCSI_Data_NoACK = 8,
+ Interrupt_Status = 9,
+ Configuration1 = 10,
+ Configuration2 = 11, /* tmc18c50/tmc18c30 only */
+ Read_FIFO = 12,
+ FIFO_Data_Count = 14
+};
+
+enum out_port_type {
+ Write_SCSI_Data = 0,
+ SCSI_Cntl = 1,
+ Interrupt_Cntl = 2,
+ SCSI_Mode_Cntl = 3,
+ TMC_Cntl = 4,
+ Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
+ Write_Loopback = 7,
+ IO_Control = 11, /* tmc18c30 only */
+ Write_FIFO = 12
+};
+
+struct fdomain {
+ int base;
+ struct scsi_cmnd *cur_cmd;
+ enum chip_type chip;
+ struct work_struct work;
+};
+
+static inline void fdomain_make_bus_idle(struct fdomain *fd)
+{
+ outb(0, fd->base + SCSI_Cntl);
+ outb(0, fd->base + SCSI_Mode_Cntl);
+ if (fd->chip == tmc18c50 || fd->chip == tmc18c30)
+ /* Clear forced intr. */
+ outb(0x21 | PARITY_MASK, fd->base + TMC_Cntl);
+ else
+ outb(0x01 | PARITY_MASK, fd->base + TMC_Cntl);
+}
+
+static enum chip_type fdomain_identify(int port)
+{
+ u16 id = inb(port + LSB_ID_Code) | inb(port + MSB_ID_Code) << 8;
+
+ switch (id) {
+ case 0x6127:
+ return tmc1800;
+ case 0x60e9: /* 18c50 or 18c30 */
+ break;
+ default:
+ return unknown;
+ }
+
+ /* Try to toggle 32-bit mode. This only works on an 18c30 chip.
+ * (User reports say this works, so we should switch to it.)
+ */
+ outb(0x80, port + IO_Control);
+ if ((inb(port + Configuration2) & 0x80) == 0x80) {
+ outb(0x00, port + IO_Control);
+ if ((inb(port + Configuration2) & 0x80) == 0x00)
+ return tmc18c30;
+ }
+ /* If that failed, we are an 18c50. */
+ return tmc18c50;
+}
+
+static int fdomain_test_loopback(int base)
+{
+ int i;
+
+ for (i = 0; i < 255; i++) {
+ outb(i, base + Write_Loopback);
+ if (inb(base + Read_Loopback) != i)
+ return 1;
+ }
+
+ return 0;
+}
+
+void fdomain_reset(int base)
+{
+ outb(1, base + SCSI_Cntl);
+ mdelay(20);
+ outb(0, base + SCSI_Cntl);
+ mdelay(1150);
+ outb(0, base + SCSI_Mode_Cntl);
+ outb(PARITY_MASK, base + TMC_Cntl);
+}
+
+static int fdomain_select(struct Scsi_Host *sh, int target)
+{
+ int status;
+ unsigned long timeout;
+ struct fdomain *fd = shost_priv(sh);
+
+ outb(0x82, fd->base + SCSI_Cntl); /* Bus Enable + Select */
+ outb(BIT(sh->this_id) | BIT(target), fd->base + SCSI_Data_NoACK);
+
+ /* Stop arbitration and enable parity */
+ outb(PARITY_MASK, fd->base + TMC_Cntl);
+
+ timeout = 350; /* 350 msec */
+
+ do {
+ status = inb(fd->base + SCSI_Status); /* Read adapter status */
+ if (status & 1) { /* Busy asserted */
+ /* Enable SCSI Bus */
+ /* (on error, should make bus idle with 0) */
+ outb(0x80, fd->base + SCSI_Cntl);
+ return 0;
+ }
+ mdelay(1);
+ } while (--timeout);
+ fdomain_make_bus_idle(fd);
+ return 1;
+}
+
+static void fdomain_finish_cmd(struct fdomain *fd, int result)
+{
+ outb(0x00, fd->base + Interrupt_Cntl);
+ fdomain_make_bus_idle(fd);
+ fd->cur_cmd->result = result;
+ fd->cur_cmd->scsi_done(fd->cur_cmd);
+ fd->cur_cmd = NULL;
+}
+
+static void fdomain_read_data(struct scsi_cmnd *cmd)
+{
+ struct fdomain *fd = shost_priv(cmd->device->host);
+ unsigned int len;
+
+ while ((len = inw(fd->base + FIFO_Data_Count)) > 0) {
+ if (len > cmd->SCp.this_residual)
+ len = cmd->SCp.this_residual;
+ if (len == 1)
+ *cmd->SCp.ptr = inb(fd->base + Read_FIFO);
+ if (len > 1) {
+ insw(fd->base + Read_FIFO, cmd->SCp.ptr, len >> 1);
+ len = round_down(len, 2);
+ }
+ cmd->SCp.ptr += len;
+ cmd->SCp.this_residual -= len;
+ if (!cmd->SCp.this_residual && cmd->SCp.buffers_residual) {
+ --cmd->SCp.buffers_residual;
+ ++cmd->SCp.buffer;
+ cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
+ cmd->SCp.this_residual = cmd->SCp.buffer->length;
+ }
+ }
+}
+
+static void fdomain_write_data(struct scsi_cmnd *cmd)
+{
+ struct fdomain *fd = shost_priv(cmd->device->host);
+ /* 8k FIFO for pre-tmc18c30 chips, 2k FIFO for tmc18c30 */
+ int FIFO_Size = fd->chip == tmc18c30 ? 0x800 : 0x2000;
+ unsigned int len;
+
+ while ((len = FIFO_Size - inw(fd->base + FIFO_Data_Count)) > 512) {
+ if (len > cmd->SCp.this_residual)
+ len = cmd->SCp.this_residual;
+ if (len == 1)
+ outb(*cmd->SCp.ptr, fd->base + Write_FIFO);
+ if (len > 1) {
+ outsw(fd->base + Write_FIFO, cmd->SCp.ptr, len >> 1);
+ len = round_down(len, 2);
+ }
+ cmd->SCp.ptr += len;
+ cmd->SCp.this_residual -= len;
+ if (!cmd->SCp.this_residual && cmd->SCp.buffers_residual) {
+ --cmd->SCp.buffers_residual;
+ ++cmd->SCp.buffer;
+ cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
+ cmd->SCp.this_residual = cmd->SCp.buffer->length;
+ } else if (!cmd->SCp.this_residual &&
+ !cmd->SCp.buffers_residual)
+ break;
+ }
+}
+
+static void fdomain_work(struct work_struct *work)
+{
+ struct fdomain *fd = container_of(work, struct fdomain, work);
+ struct Scsi_Host *sh = container_of((void *)fd, struct Scsi_Host,
+ hostdata);
+ struct scsi_cmnd *cmd = fd->cur_cmd;
+ unsigned long flags;
+ int status;
+ int done = 0;
+
+ /* Abort calls fdomain_finish_cmd, so we do nothing here. */
+ if (cmd->SCp.phase & aborted)
+ ;
+
+ spin_lock_irqsave(sh->host_lock, flags);
+
+ if (cmd->SCp.phase & in_arbitration) {
+ status = inb(fd->base + TMC_Status);
+ if (!(status & 0x02)) {
+ fdomain_finish_cmd(fd, DID_BUS_BUSY << 16);
+ goto out;
+ }
+ cmd->SCp.phase = in_selection;
+
+ outb(0x40 | FIFO_COUNT, fd->base + Interrupt_Cntl);
+ outb(0x82, fd->base + SCSI_Cntl); /* Bus Enable + Select */
+ outb(BIT(cmd->device->host->this_id) |
+ BIT(scmd_id(cmd)), fd->base + SCSI_Data_NoACK);
+ /* Stop arbitration and enable parity */
+ outb(0x10 | PARITY_MASK, fd->base + TMC_Cntl);
+ goto out;
+ } else if (cmd->SCp.phase & in_selection) {
+ status = inb(fd->base + SCSI_Status);
+ if (!(status & 0x01)) {
+ /* Try again, for slow devices */
+ if (fdomain_select(cmd->device->host, scmd_id(cmd))) {
+ fdomain_finish_cmd(fd, DID_NO_CONNECT << 16);
+ goto out;
+ }
+ /* Stop arbitration and enable parity */
+ outb(0x10 | PARITY_MASK, fd->base + TMC_Cntl);
+ }
+ cmd->SCp.phase = in_other;
+ outb(0x90 | FIFO_COUNT, fd->base + Interrupt_Cntl);
+ outb(0x80, fd->base + SCSI_Cntl);
+ goto out;
+ }
+
+ /* cur_cmd->SCp.phase == in_other: this is the body of the routine */
+ status = inb(fd->base + SCSI_Status);
+
+ if (status & 0x10) { /* REQ */
+ switch (status & 0x0e) {
+ case 0x08: /* COMMAND OUT */
+ outb(cmd->cmnd[cmd->SCp.sent_command++],
+ fd->base + Write_SCSI_Data);
+ break;
+ case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
+ if (fd->chip != tmc1800 && !cmd->SCp.have_data_in) {
+ cmd->SCp.have_data_in = -1;
+ outb(0xd0 | PARITY_MASK, fd->base + TMC_Cntl);
+ }
+ break;
+ case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
+ if (fd->chip != tmc1800 && !cmd->SCp.have_data_in) {
+ cmd->SCp.have_data_in = 1;
+ outb(0x90 | PARITY_MASK, fd->base + TMC_Cntl);
+ }
+ break;
+ case 0x0c: /* STATUS IN */
+ cmd->SCp.Status = inb(fd->base + Read_SCSI_Data);
+ break;
+ case 0x0a: /* MESSAGE OUT */
+ outb(MESSAGE_REJECT, fd->base + Write_SCSI_Data);
+ break;
+ case 0x0e: /* MESSAGE IN */
+ cmd->SCp.Message = inb(fd->base + Read_SCSI_Data);
+ if (!cmd->SCp.Message)
+ ++done;
+ break;
+ }
+ }
+
+ if (fd->chip == tmc1800 && !cmd->SCp.have_data_in
+ && (cmd->SCp.sent_command >= cmd->cmd_len)) {
+ if (cmd->sc_data_direction == DMA_TO_DEVICE) {
+ cmd->SCp.have_data_in = -1;
+ outb(0xd0 | PARITY_MASK, fd->base + TMC_Cntl);
+ } else {
+ cmd->SCp.have_data_in = 1;
+ outb(0x90 | PARITY_MASK, fd->base + TMC_Cntl);
+ }
+ }
+
+ if (cmd->SCp.have_data_in == -1) /* DATA OUT */
+ fdomain_write_data(cmd);
+
+ if (cmd->SCp.have_data_in == 1) /* DATA IN */
+ fdomain_read_data(cmd);
+
+ if (done) {
+ fdomain_finish_cmd(fd, (cmd->SCp.Status & 0xff) |
+ ((cmd->SCp.Message & 0xff) << 8) |
+ (DID_OK << 16));
+ } else {
+ if (cmd->SCp.phase & disconnect) {
+ outb(0xd0 | FIFO_COUNT, fd->base + Interrupt_Cntl);
+ outb(0x00, fd->base + SCSI_Cntl);
+ } else
+ outb(0x90 | FIFO_COUNT, fd->base + Interrupt_Cntl);
+ }
+out:
+ spin_unlock_irqrestore(sh->host_lock, flags);
+}
+
+static irqreturn_t fdomain_irq(int irq, void *dev_id)
+{
+ struct fdomain *fd = dev_id;
+
+ /* Is it our IRQ? */
+ if ((inb(fd->base + TMC_Status) & 0x01) == 0)
+ return IRQ_NONE;
+
+ outb(0x00, fd->base + Interrupt_Cntl);
+
+ /* We usually have one spurious interrupt after each command. */
+ if (!fd->cur_cmd) /* Spurious interrupt */
+ return IRQ_NONE;
+
+ schedule_work(&fd->work);
+
+ return IRQ_HANDLED;
+}
+
+static int fdomain_queue(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
+{
+ struct fdomain *fd = shost_priv(cmd->device->host);
+ unsigned long flags;
+
+ /* Initialize static data */
+ if (scsi_sg_count(cmd)) {
+ cmd->SCp.buffer = scsi_sglist(cmd);
+ cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
+ cmd->SCp.this_residual = cmd->SCp.buffer->length;
+ cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
+ } else {
+ cmd->SCp.ptr = NULL;
+ cmd->SCp.this_residual = 0;
+ cmd->SCp.buffer = NULL;
+ cmd->SCp.buffers_residual = 0;
+ }
+ cmd->SCp.Status = 0;
+ cmd->SCp.Message = 0;
+ cmd->SCp.have_data_in = 0;
+ cmd->SCp.sent_command = 0;
+ cmd->SCp.phase = in_arbitration;
+
+ spin_lock_irqsave(sh->host_lock, flags);
+
+ fd->cur_cmd = cmd;
+
+ fdomain_make_bus_idle(fd);
+
+ /* Start arbitration */
+ outb(0x00, fd->base + Interrupt_Cntl);
+ outb(0x00, fd->base + SCSI_Cntl); /* Disable data drivers */
+ outb(BIT(cmd->device->host->this_id),
+ fd->base + SCSI_Data_NoACK); /* Set our id bit */
+ outb(0x20, fd->base + Interrupt_Cntl);
+ outb(0x14 | PARITY_MASK, fd->base + TMC_Cntl); /* Start arbitration */
+
+ spin_unlock_irqrestore(sh->host_lock, flags);
+
+ return 0;
+}
+
+static int fdomain_abort(struct scsi_cmnd *cmd)
+{
+ struct Scsi_Host *sh = cmd->device->host;
+ struct fdomain *fd = shost_priv(sh);
+ unsigned long flags;
+
+ if (!fd->cur_cmd)
+ return FAILED;
+
+ spin_lock_irqsave(sh->host_lock, flags);
+
+ fdomain_make_bus_idle(fd);
+ fd->cur_cmd->SCp.phase |= aborted;
+ fd->cur_cmd->result = DID_ABORT << 16;
+
+ /* Aborts are not done well. . . */
+ fdomain_finish_cmd(fd, DID_ABORT << 16);
+ spin_unlock_irqrestore(sh->host_lock, flags);
+ return SUCCESS;
+}
+
+int fdomain_host_reset(struct scsi_cmnd *cmd)
+{
+ struct Scsi_Host *sh = cmd->device->host;
+ struct fdomain *fd = shost_priv(sh);
+ unsigned long flags;
+
+ spin_lock_irqsave(sh->host_lock, flags);
+ fdomain_reset(fd->base);
+ spin_lock_irqsave(sh->host_lock, flags);
+ return SUCCESS;
+}
+
+static int fdomain_biosparam(struct scsi_device *sdev,
+ struct block_device *bdev, sector_t capacity,
+ int geom[])
+{
+ unsigned char *p = scsi_bios_ptable(bdev);
+
+ if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */
+ && p[4]) { /* Partition type */
+ geom[0] = p[5] + 1; /* heads */
+ geom[1] = p[6] & 0x3f; /* sectors */
+ } else {
+ if (capacity >= 0x7e0000) {
+ geom[0] = 255; /* heads */
+ geom[1] = 63; /* sectors */
+ } else if (capacity >= 0x200000) {
+ geom[0] = 128; /* heads */
+ geom[1] = 63; /* sectors */
+ } else {
+ geom[0] = 64; /* heads */
+ geom[1] = 32; /* sectors */
+ }
+ }
+ geom[2] = sector_div(capacity, geom[0] * geom[1]);
+ kfree(p);
+
+ return 0;
+}
+
+struct scsi_host_template fdomain_template = {
+ .module = THIS_MODULE,
+ .name = "Future Domain TMC-16x0",
+ .proc_name = "fdomain",
+ .queuecommand = fdomain_queue,
+ .eh_abort_handler = fdomain_abort,
+ .eh_host_reset_handler = fdomain_host_reset,
+ .bios_param = fdomain_biosparam,
+ .can_queue = 1,
+ .this_id = 7,
+ .sg_tablesize = 64,
+ .dma_boundary = PAGE_SIZE - 1,
+};
+
+struct Scsi_Host *fdomain_create(int base, int irq, int this_id,
+ unsigned long bios_base, struct signature *sig,
+ struct device *dev)
+{
+ struct Scsi_Host *sh;
+ struct fdomain *fd;
+ enum chip_type chip;
+ static const char * const chip_names[] = {
+ "Unknown", "TMC-1800", "TMC-18C50", "TMC-18C30"
+ };
+
+ chip = fdomain_identify(base);
+ if (!chip)
+ return NULL;
+
+ fdomain_reset(base);
+
+ if (fdomain_test_loopback(base))
+ return NULL;
+
+ if (!irq) {
+ if (dev_is_pci(dev)) {
+ dev_err(dev, "PCI card has no IRQ assigned");
+ return NULL;
+ }
+ irq = irqs[(inb(base + Configuration1) & 0x0e) >> 1];
+ }
+
+ sh = scsi_host_alloc(&fdomain_template, sizeof(struct fdomain));
+ if (!sh)
+ return NULL;
+
+ if (this_id)
+ sh->this_id = this_id & 0x07;
+ else if (sig && (sig->bios_major > 0) &&
+ (sig->bios_major < 3 || sig->bios_minor < 2))
+ sh->this_id = 6;
+
+ sh->irq = irq;
+ sh->io_port = base;
+ sh->n_io_port = FDOMAIN_REGION_SIZE;
+
+ fd = shost_priv(sh);
+ fd->base = base;
+ fd->chip = chip;
+ INIT_WORK(&fd->work, fdomain_work);
+
+ if (request_irq(irq, fdomain_irq, dev_is_pci(dev) ? IRQF_SHARED : 0,
+ "fdomain", fd))
+ goto fail_put;
+
+ if (!sig || (sig->bios_major < 0 && sig->bios_minor < 0))
+ shost_printk(KERN_INFO, sh, "No BIOS; using SCSI ID %d\n",
+ sh->this_id);
+ else {
+ char v1 = (sig->bios_major >= 0) ? '0' + sig->bios_major : '?';
+ char v2 = (sig->bios_minor >= 0) ? '0' + sig->bios_minor : '?';
+
+ shost_printk(KERN_INFO, sh, "BIOS version %c.%c at 0x%lx using SCSI ID %d\n",
+ v1, v2, bios_base, sh->this_id);
+ }
+ shost_printk(KERN_INFO, sh, "%s chip at 0x%x irq %d\n",
+ dev_is_pci(dev) ? "TMC-36C70 (PCI bus)" : chip_names[chip],
+ base, irq);
+
+ if (scsi_add_host(sh, dev))
+ goto fail_free_irq;
+
+ scsi_scan_host(sh);
+
+ return sh;
+
+fail_free_irq:
+ free_irq(irq, fd);
+fail_put:
+ scsi_host_put(sh);
+ return NULL;
+}
+EXPORT_SYMBOL(fdomain_create);
+
+int fdomain_destroy(struct Scsi_Host *sh)
+{
+ struct fdomain *fd = shost_priv(sh);
+
+ cancel_work_sync(&fd->work);
+ scsi_remove_host(sh);
+ if (sh->irq)
+ free_irq(sh->irq, fd);
+ scsi_host_put(sh);
+ return 0;
+}
+EXPORT_SYMBOL(fdomain_destroy);
+
+#ifdef CONFIG_PM_SLEEP
+static int fdomain_resume(struct device *dev)
+{
+ struct fdomain *fd = shost_priv(dev_get_drvdata(dev));
+
+ fdomain_reset(fd->base);
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(fdomain_pm_ops, NULL, fdomain_resume);
+#endif /* CONFIG_PM_SLEEP */
+
+MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith");
+MODULE_DESCRIPTION("Future Domain TMC-16x0/TMC-3260 SCSI driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/fdomain.h b/drivers/scsi/fdomain.h
new file mode 100644
index 000000000000..ab1a65d7db1f
--- /dev/null
+++ b/drivers/scsi/fdomain.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#define FDOMAIN_REGION_SIZE 0x10
+#define FDOMAIN_BIOS_SIZE 0x2000
+
+#ifdef CONFIG_PM_SLEEP
+static const struct dev_pm_ops fdomain_pm_ops;
+#define FDOMAIN_PM_OPS (&fdomain_pm_ops)
+#else
+#define FDOMAIN_PM_OPS NULL
+#endif /* CONFIG_PM_SLEEP */
+
+struct signature {
+ const char *signature;
+ int offset;
+ int length;
+ int bios_major;
+ int bios_minor;
+ int flag; /* 1 = PCI_bus, 2 = ISA_200S, 3 = ISA_250MG, 4 = ISA_200S */
+};
+
+struct Scsi_Host *fdomain_create(int base, int irq, int this_id,
+ unsigned long bios_base, struct signature *sig,
+ struct device *dev);
+int fdomain_destroy(struct Scsi_Host *sh);
--
Ondrej Zary
^ permalink raw reply related [flat|nested] 9+ messages in thread* Re: [RFC PATCH 1/4] fdomain: Resurrect driver (core)
2019-04-22 17:33 ` [RFC PATCH 1/4] fdomain: Resurrect driver (core) Ondrej Zary
@ 2019-04-24 6:02 ` Christoph Hellwig
2019-04-28 19:52 ` Ondrej Zary
0 siblings, 1 reply; 9+ messages in thread
From: Christoph Hellwig @ 2019-04-24 6:02 UTC (permalink / raw)
To: Ondrej Zary; +Cc: Rik Faith, David A . Hinds, linux-scsi, linux-kernel
> +/* FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
> + * 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by
> + * the SCSI device, an interrupt will be raised. Therefore, this could be as
> + * low as 0, or as high as 16. Note, however, that values which are too high
> + * or too low seem to prevent any interrupts from occurring, and thereby lock
> + * up the machine.
> + */
Normally we use
/*
* ...
*/
style comments. I'm not sure it is worth bothering to change it in this
driver, though.
> + cmd->SCp.ptr += len;
> + cmd->SCp.this_residual -= len;
> + if (!cmd->SCp.this_residual && cmd->SCp.buffers_residual) {
> + --cmd->SCp.buffers_residual;
> + ++cmd->SCp.buffer;
> + cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
This isn't safe on highmem systems. At very least we need a depends on
!HIGHMEM for the drivers selecting this core driver. If you feel like
doing the work it should use scsi_kmap_atomic_sg and
scsi_kunmap_atomic_sg.
> +static void fdomain_work(struct work_struct *work)
> +{
> + struct fdomain *fd = container_of(work, struct fdomain, work);
> + struct Scsi_Host *sh = container_of((void *)fd, struct Scsi_Host,
> + hostdata);
This looks odd. We should never need a void cast for container_of.
> + /* Abort calls fdomain_finish_cmd, so we do nothing here. */
> + if (cmd->SCp.phase & aborted)
> + ;
This is a no-op..
> + if (fd->chip == tmc1800 && !cmd->SCp.have_data_in
> + && (cmd->SCp.sent_command >= cmd->cmd_len)) {
&& goes on the first line, no need for the inner braces on the second
line.
> +int fdomain_host_reset(struct scsi_cmnd *cmd)
Should be static.
> +struct scsi_host_template fdomain_template = {
Should be marked const.
> + if (fdomain_test_loopback(base))
> + return NULL;
> +
> + if (!irq) {
> + if (dev_is_pci(dev)) {
> + dev_err(dev, "PCI card has no IRQ assigned");
> + return NULL;
> + }
> + irq = irqs[(inb(base + Configuration1) & 0x0e) >> 1];
The irqs lookup should probably go into the callers that need it.
> + else if (sig && (sig->bios_major > 0) &&
No need for the inner braces.
> +EXPORT_SYMBOL(fdomain_create);
EXPORT_SYMBOL_GPL for internals like this and fdomain_destroy.
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [RFC PATCH 1/4] fdomain: Resurrect driver (core)
2019-04-24 6:02 ` Christoph Hellwig
@ 2019-04-28 19:52 ` Ondrej Zary
2019-04-29 11:51 ` Christoph Hellwig
0 siblings, 1 reply; 9+ messages in thread
From: Ondrej Zary @ 2019-04-28 19:52 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: Rik Faith, David A . Hinds, linux-scsi, linux-kernel
On Wednesday 24 April 2019 08:02:12 Christoph Hellwig wrote:
> > +static void fdomain_work(struct work_struct *work)
> > +{
> > + struct fdomain *fd = container_of(work, struct fdomain, work);
> > + struct Scsi_Host *sh = container_of((void *)fd, struct Scsi_Host,
> > + hostdata);
>
> This looks odd. We should never need a void cast for container_of.
This cast is present in all drivers involving container_of, struct Scsi_Host and hostdata. hostdata in struct Scsi_Host is defined as "unsigned long hostdata[0]"...
--
Ondrej Zary
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [RFC PATCH 1/4] fdomain: Resurrect driver (core)
2019-04-28 19:52 ` Ondrej Zary
@ 2019-04-29 11:51 ` Christoph Hellwig
0 siblings, 0 replies; 9+ messages in thread
From: Christoph Hellwig @ 2019-04-29 11:51 UTC (permalink / raw)
To: Ondrej Zary
Cc: Christoph Hellwig, Rik Faith, David A . Hinds, linux-scsi,
linux-kernel
On Sun, Apr 28, 2019 at 09:52:31PM +0200, Ondrej Zary wrote:
> On Wednesday 24 April 2019 08:02:12 Christoph Hellwig wrote:
> > > +static void fdomain_work(struct work_struct *work)
> > > +{
> > > + struct fdomain *fd = container_of(work, struct fdomain, work);
> > > + struct Scsi_Host *sh = container_of((void *)fd, struct Scsi_Host,
> > > + hostdata);
> >
> > This looks odd. We should never need a void cast for container_of.
>
> This cast is present in all drivers involving container_of, struct Scsi_Host and hostdata. hostdata in struct Scsi_Host is defined as "unsigned long hostdata[0]"...
Oh, right - it is the hostdata mess. Sorry for the noise!
^ permalink raw reply [flat|nested] 9+ messages in thread
* [RFC PATCH 2/4] fdomain: Resurrect driver (PCI support)
2019-04-22 17:33 [RFC PATCH 0/4] fdomain: Resurrect driver (modular version) Ondrej Zary
2019-04-22 17:33 ` [RFC PATCH 1/4] fdomain: Resurrect driver (core) Ondrej Zary
@ 2019-04-22 17:33 ` Ondrej Zary
2019-04-24 6:02 ` Christoph Hellwig
2019-04-22 17:33 ` [RFC PATCH 3/4] fdomain: Resurrect driver (ISA support) Ondrej Zary
2019-04-22 17:33 ` [RFC PATCH 4/4] fdomain: Resurrect driver (PCMCIA support) Ondrej Zary
3 siblings, 1 reply; 9+ messages in thread
From: Ondrej Zary @ 2019-04-22 17:33 UTC (permalink / raw)
To: Rik Faith, David A . Hinds; +Cc: linux-scsi, linux-kernel
Future Domain TMC-3260/AHA-2920A PCI card support.
Tested on Adaptec AHA-2920A PCI card.
Signed-off-by: Ondrej Zary <linux@zary.sk>
---
drivers/scsi/Kconfig | 17 ++++++++++++
drivers/scsi/Makefile | 1 +
drivers/scsi/fdomain_pci.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 86 insertions(+)
create mode 100644 drivers/scsi/fdomain_pci.c
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 3d6b1f47cbb5..f9d058a07e2a 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -667,6 +667,23 @@ config SCSI_FDOMAIN
tristate
depends on SCSI
+config SCSI_FDOMAIN_PCI
+ tristate "Future Domain TMC-3260/AHA-2920A PCI SCSI support"
+ depends on PCI && SCSI
+ select SCSI_FDOMAIN
+ help
+ This is support for Future Domain's PCI SCSI host adapters (TMC-3260)
+ and other adapters with PCI bus based on the Future Domain chipsets
+ (Adaptec AHA-2920A).
+
+ NOTE: Newer Adaptec AHA-2920C boards use the Adaptec AIC-7850 chip
+ and should use the aic7xxx driver ("Adaptec AIC7xxx chipset SCSI
+ controller support"). This Future Domain driver works with the older
+ Adaptec AHA-2920A boards with a Future Domain chip on them.
+
+ To compile this driver as a module, choose M here: the
+ module will be called fdomain_pci.
+
config SCSI_GDTH
tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support"
depends on PCI && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index b8fbc6d2de54..f6cc4fbe6957 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -77,6 +77,7 @@ obj-$(CONFIG_SCSI_PM8001) += pm8001/
obj-$(CONFIG_SCSI_ISCI) += isci/
obj-$(CONFIG_SCSI_IPS) += ips.o
obj-$(CONFIG_SCSI_FDOMAIN) += fdomain.o
+obj-$(CONFIG_SCSI_FDOMAIN_PCI) += fdomain_pci.o
obj-$(CONFIG_SCSI_GENERIC_NCR5380) += g_NCR5380.o
obj-$(CONFIG_SCSI_QLOGIC_FAS) += qlogicfas408.o qlogicfas.o
obj-$(CONFIG_PCMCIA_QLOGIC) += qlogicfas408.o
diff --git a/drivers/scsi/fdomain_pci.c b/drivers/scsi/fdomain_pci.c
new file mode 100644
index 000000000000..381a7157c078
--- /dev/null
+++ b/drivers/scsi/fdomain_pci.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include "fdomain.h"
+
+static int fdomain_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *d)
+{
+ int err;
+ struct Scsi_Host *sh;
+
+ err = pci_enable_device(pdev);
+ if (err)
+ goto fail;
+
+ err = pci_request_regions(pdev, "fdomain_pci");
+ if (err)
+ goto disable_device;
+
+ err = -ENODEV;
+ if (pci_resource_len(pdev, 0) == 0)
+ goto release_region;
+
+ sh = fdomain_create(pci_resource_start(pdev, 0), pdev->irq, 7, 0, NULL,
+ &pdev->dev);
+ if (!sh)
+ goto release_region;
+
+ pci_set_drvdata(pdev, sh);
+ return 0;
+
+release_region:
+ pci_release_regions(pdev);
+disable_device:
+ pci_disable_device(pdev);
+fail:
+ return err;
+}
+
+static void fdomain_pci_remove(struct pci_dev *pdev)
+{
+ struct Scsi_Host *sh = pci_get_drvdata(pdev);
+
+ fdomain_destroy(sh);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+}
+
+static struct pci_device_id fdomain_pci_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70) },
+ {}
+};
+MODULE_DEVICE_TABLE(pci, fdomain_pci_table);
+
+static struct pci_driver fdomain_pci_driver = {
+ .name = "fdomain_pci",
+ .id_table = fdomain_pci_table,
+ .probe = fdomain_pci_probe,
+ .remove = fdomain_pci_remove,
+ .driver.pm = FDOMAIN_PM_OPS,
+};
+
+module_pci_driver(fdomain_pci_driver);
+
+MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith");
+MODULE_DESCRIPTION("Future Domain TMC-3260 PCI SCSI driver");
+MODULE_LICENSE("GPL");
--
Ondrej Zary
^ permalink raw reply related [flat|nested] 9+ messages in thread* [RFC PATCH 3/4] fdomain: Resurrect driver (ISA support)
2019-04-22 17:33 [RFC PATCH 0/4] fdomain: Resurrect driver (modular version) Ondrej Zary
2019-04-22 17:33 ` [RFC PATCH 1/4] fdomain: Resurrect driver (core) Ondrej Zary
2019-04-22 17:33 ` [RFC PATCH 2/4] fdomain: Resurrect driver (PCI support) Ondrej Zary
@ 2019-04-22 17:33 ` Ondrej Zary
2019-04-22 17:33 ` [RFC PATCH 4/4] fdomain: Resurrect driver (PCMCIA support) Ondrej Zary
3 siblings, 0 replies; 9+ messages in thread
From: Ondrej Zary @ 2019-04-22 17:33 UTC (permalink / raw)
To: Rik Faith, David A . Hinds; +Cc: linux-scsi, linux-kernel
Future Domain 16xx ISA SCSI support card support.
Currently untested.
Signed-off-by: Ondrej Zary <linux@zary.sk>
---
drivers/scsi/Kconfig | 14 +++
drivers/scsi/Makefile | 1 +
drivers/scsi/fdomain_isa.c | 227 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 242 insertions(+)
create mode 100644 drivers/scsi/fdomain_isa.c
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index f9d058a07e2a..2ea77dafbc00 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -684,6 +684,20 @@ config SCSI_FDOMAIN_PCI
To compile this driver as a module, choose M here: the
module will be called fdomain_pci.
+config SCSI_FDOMAIN_ISA
+ tristate "Future Domain 16xx ISA SCSI support"
+ depends on ISA && SCSI
+ select CHECK_SIGNATURE
+ select SCSI_FDOMAIN
+ help
+ This is support for Future Domain's 16-bit SCSI host adapters
+ (TMC-1660/1680, TMC-1650/1670, TMC-1610M/MER/MEX) and other adapters
+ with ISA bus based on the Future Domain chipsets (Quantum ISA-200S,
+ ISA-250MG; and at least one IBM board).
+
+ To compile this driver as a module, choose M here: the
+ module will be called fdomain_isa.
+
config SCSI_GDTH
tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support"
depends on PCI && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index f6cc4fbe6957..2e2cffff777d 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -78,6 +78,7 @@ obj-$(CONFIG_SCSI_ISCI) += isci/
obj-$(CONFIG_SCSI_IPS) += ips.o
obj-$(CONFIG_SCSI_FDOMAIN) += fdomain.o
obj-$(CONFIG_SCSI_FDOMAIN_PCI) += fdomain_pci.o
+obj-$(CONFIG_SCSI_FDOMAIN_ISA) += fdomain_isa.o
obj-$(CONFIG_SCSI_GENERIC_NCR5380) += g_NCR5380.o
obj-$(CONFIG_SCSI_QLOGIC_FAS) += qlogicfas408.o qlogicfas.o
obj-$(CONFIG_PCMCIA_QLOGIC) += qlogicfas408.o
diff --git a/drivers/scsi/fdomain_isa.c b/drivers/scsi/fdomain_isa.c
new file mode 100644
index 000000000000..9f8bf02f175f
--- /dev/null
+++ b/drivers/scsi/fdomain_isa.c
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/isa.h>
+#include <scsi/scsi_host.h>
+#include "fdomain.h"
+
+#define MAXBOARDS_PARAM 4
+static int io[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };
+module_param_hw_array(io, int, ioport, NULL, 0);
+MODULE_PARM_DESC(io, "base I/O address of controller (0x140, 0x150, 0x160, 0x170)");
+
+static int irq[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };
+module_param_hw_array(irq, int, irq, NULL, 0);
+MODULE_PARM_DESC(irq, "IRQ of controller (0=auto [default])");
+
+static int scsi_id[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };
+module_param_hw_array(scsi_id, int, other, NULL, 0);
+MODULE_PARM_DESC(scsi_id, "SCSI ID of controller (default = 6)");
+
+static unsigned long addresses[] = {
+ 0xc8000,
+ 0xca000,
+ 0xce000,
+ 0xde000,
+};
+#define ADDRESS_COUNT ARRAY_SIZE(addresses)
+
+static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
+#define PORT_COUNT ARRAY_SIZE(ports)
+
+/* This driver works *ONLY* for Future Domain cards using the TMC-1800,
+ * TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670,
+ * and 1680. These are all 16-bit cards.
+ *
+ * The following BIOS signature signatures are for boards which do *NOT*
+ * work with this driver (these TMC-8xx and TMC-9xx boards may work with the
+ * Seagate driver):
+ *
+ * FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88
+ * FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89
+ * FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89
+ * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90
+ * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90
+ * FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90
+ * FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92
+ *
+ * (The cards which do *NOT* work are all 8-bit cards -- although some of
+ * them have a 16-bit form-factor, the upper 8-bits are used only for IRQs
+ * and are *NOT* used for data. You can tell the difference by following
+ * the tracings on the circuit board -- if only the IRQ lines are involved,
+ * you have a "8-bit" card, and should *NOT* use this driver.)
+ */
+
+static struct signature signatures[] = {
+/* 1 2 3 4 5 6 */
+/* 123456789012345678901234567890123456789012345678901234567890 */
+{ "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 },
+{ "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 },
+{ "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 },
+{ "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 },
+{ "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 },
+{ "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 },
+{ "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 },
+{ "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 },
+{ "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 },
+{ "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 },
+{ "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 },
+{ "IBM F1 P264/32", 5, 14, 3, -1, 1 },
+/* This next signature may not be a 3.5 bios */
+{ "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 },
+{ "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 },
+{ "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 },
+{ "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 },
+{ "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 },
+{ "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 },
+/* Note that the last line will match a "generic" 18XX bios. Because
+ * Future Domain has changed the host SCSI ID and/or the location of the
+ * geometry information in the on-board RAM area for each of the first
+ * three BIOS's, it is still important to enter a fully qualified
+ * signature in the table for any new BIOS's (after the host SCSI ID and
+ * geometry location are verified).
+ */
+};
+#define SIGNATURE_COUNT ARRAY_SIZE(signatures)
+
+static int fdomain_isa_match(struct device *dev, unsigned int ndev)
+{
+ struct Scsi_Host *sh;
+ int i, base = 0, irq = 0, bios_base = 0;
+ struct signature *sig = NULL;
+ void __iomem *p;
+ static int saved_bios_base;
+ static struct signature *saved_sig;
+
+ if (ndev < ADDRESS_COUNT) { /* scan supported ISA BIOS addresses */
+ p = ioremap(addresses[ndev], FDOMAIN_BIOS_SIZE);
+ if (!p)
+ return 0;
+ for (i = 0; i < SIGNATURE_COUNT; i++)
+ if (check_signature(p + signatures[i].offset,
+ signatures[i].signature,
+ signatures[i].length))
+ break;
+ if (i == SIGNATURE_COUNT) /* no signature found */
+ goto fail_unmap;
+ if (signatures[i].flag == 1) /* ignore PCI devices */
+ goto fail_unmap;
+ sig = &signatures[i];
+ bios_base = addresses[ndev];
+ /* read I/O base from BIOS area */
+ if (sig->bios_major == 2) {
+ switch (sig->flag) {
+ case 2: /* ISA_200S */
+ case 3: /* ISA_250MG */
+ base = readb(p + 0x1fa2) +
+ (readb(p + 0x1fa3) << 8);
+ break;
+ case 4: /* ISA_200S (another one) */
+ base = readb(p + 0x1fa3) +
+ (readb(p + 0x1fa4) << 8);
+ break;
+ default:
+ base = readb(p + 0x1fcc) +
+ (readb(p + 0x1fcd) << 8);
+ break;
+ }
+ }
+ iounmap(p);
+ if (!base) { /* no I/O base in BIOS area */
+ /* save BIOS info for later use in port probing */
+ saved_bios_base = bios_base;
+ saved_sig = sig;
+ return 0;
+ }
+ } else /* scan supported I/O ports */
+ base = ports[ndev - ADDRESS_COUNT];
+
+ /* use saved BIOS details if present */
+ if (!bios_base && saved_bios_base) {
+ bios_base = saved_bios_base;
+ sig = saved_sig;
+ }
+
+ if (!request_region(base, FDOMAIN_REGION_SIZE, "fdomain_isa"))
+ return 0;
+
+ sh = fdomain_create(base, irq, 0, bios_base, sig, dev);
+ if (!sh) {
+ release_region(base, FDOMAIN_REGION_SIZE);
+ return 0;
+ }
+
+ dev_set_drvdata(dev, sh);
+ return 1;
+fail_unmap:
+ iounmap(p);
+ return 0;
+}
+
+static int fdomain_isa_param_match(struct device *dev, unsigned int ndev)
+{
+ struct Scsi_Host *sh;
+
+ if (!io[ndev])
+ return 0;
+
+ if (!request_region(io[ndev], FDOMAIN_REGION_SIZE, "fdomain_isa")) {
+ dev_err(dev, "base 0x%x already in use", io[ndev]);
+ return 0;
+ }
+
+ sh = fdomain_create(io[ndev], irq[ndev], scsi_id[ndev], 0, NULL, dev);
+ if (!sh) {
+ dev_err(dev, "controller not found at base 0x%x", io[ndev]);
+ release_region(io[ndev], FDOMAIN_REGION_SIZE);
+ return 0;
+ }
+
+ dev_set_drvdata(dev, sh);
+ return 1;
+}
+
+static int fdomain_isa_remove(struct device *dev, unsigned int ndev)
+{
+ struct Scsi_Host *sh = dev_get_drvdata(dev);
+ int base = sh->io_port;
+
+ fdomain_destroy(sh);
+ release_region(base, FDOMAIN_REGION_SIZE);
+ dev_set_drvdata(dev, NULL);
+ return 0;
+}
+
+static struct isa_driver fdomain_isa_driver = {
+ .match = fdomain_isa_match,
+ .remove = fdomain_isa_remove,
+ .driver = {
+ .name = "fdomain_isa",
+ .pm = FDOMAIN_PM_OPS,
+ },
+};
+
+static int __init fdomain_isa_init(void)
+{
+ int isa_probe_count = ADDRESS_COUNT + PORT_COUNT;
+
+ if (io[0]) { /* use module parameters if present */
+ fdomain_isa_driver.match = fdomain_isa_param_match;
+ isa_probe_count = MAXBOARDS_PARAM;
+ }
+
+ return isa_register_driver(&fdomain_isa_driver, isa_probe_count);
+}
+
+static void __exit fdomain_isa_exit(void)
+{
+ isa_unregister_driver(&fdomain_isa_driver);
+}
+
+module_init(fdomain_isa_init);
+module_exit(fdomain_isa_exit);
+
+MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith");
+MODULE_DESCRIPTION("Future Domain TMC-16x0 ISA SCSI driver");
+MODULE_LICENSE("GPL");
--
Ondrej Zary
^ permalink raw reply related [flat|nested] 9+ messages in thread* [RFC PATCH 4/4] fdomain: Resurrect driver (PCMCIA support)
2019-04-22 17:33 [RFC PATCH 0/4] fdomain: Resurrect driver (modular version) Ondrej Zary
` (2 preceding siblings ...)
2019-04-22 17:33 ` [RFC PATCH 3/4] fdomain: Resurrect driver (ISA support) Ondrej Zary
@ 2019-04-22 17:33 ` Ondrej Zary
3 siblings, 0 replies; 9+ messages in thread
From: Ondrej Zary @ 2019-04-22 17:33 UTC (permalink / raw)
To: Rik Faith, David A . Hinds; +Cc: linux-scsi, linux-kernel
Future Domain PCMCIA SCSI support card support.
Currently untested.
Signed-off-by: Ondrej Zary <linux@zary.sk>
---
drivers/scsi/pcmcia/Kconfig | 10 +++++
drivers/scsi/pcmcia/Makefile | 1 +
drivers/scsi/pcmcia/fdomain_cs.c | 89 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 100 insertions(+)
create mode 100644 drivers/scsi/pcmcia/fdomain_cs.c
diff --git a/drivers/scsi/pcmcia/Kconfig b/drivers/scsi/pcmcia/Kconfig
index 2d435f105b16..169d93f90a30 100644
--- a/drivers/scsi/pcmcia/Kconfig
+++ b/drivers/scsi/pcmcia/Kconfig
@@ -19,6 +19,16 @@ config PCMCIA_AHA152X
To compile this driver as a module, choose M here: the
module will be called aha152x_cs.
+config PCMCIA_FDOMAIN
+ tristate "Future Domain PCMCIA support"
+ select SCSI_FDOMAIN
+ help
+ Say Y here if you intend to attach this type of PCMCIA SCSI host
+ adapter to your computer.
+
+ To compile this driver as a module, choose M here: the
+ module will be called fdomain_cs.
+
config PCMCIA_NINJA_SCSI
tristate "NinjaSCSI-3 / NinjaSCSI-32Bi (16bit) PCMCIA support"
depends on !64BIT
diff --git a/drivers/scsi/pcmcia/Makefile b/drivers/scsi/pcmcia/Makefile
index a5a24dd44e7e..02f5b44a2685 100644
--- a/drivers/scsi/pcmcia/Makefile
+++ b/drivers/scsi/pcmcia/Makefile
@@ -4,6 +4,7 @@ ccflags-y := -I $(srctree)/drivers/scsi
# 16-bit client drivers
obj-$(CONFIG_PCMCIA_QLOGIC) += qlogic_cs.o
+obj-$(CONFIG_PCMCIA_FDOMAIN) += fdomain_cs.o
obj-$(CONFIG_PCMCIA_AHA152X) += aha152x_cs.o
obj-$(CONFIG_PCMCIA_NINJA_SCSI) += nsp_cs.o
obj-$(CONFIG_PCMCIA_SYM53C500) += sym53c500_cs.o
diff --git a/drivers/scsi/pcmcia/fdomain_cs.c b/drivers/scsi/pcmcia/fdomain_cs.c
new file mode 100644
index 000000000000..eee1379ad67b
--- /dev/null
+++ b/drivers/scsi/pcmcia/fdomain_cs.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
+/*
+ * Driver for Future Domain-compatible PCMCIA SCSI cards
+ * Copyright 2019 Ondrej Zary
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <scsi/scsi_host.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include "fdomain.h"
+
+MODULE_AUTHOR("Ondrej Zary, David Hinds");
+MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
+MODULE_LICENSE("Dual MPL/GPL");
+
+static int fdomain_config_check(struct pcmcia_device *p_dev, void *priv_data)
+{
+ p_dev->io_lines = 10;
+ p_dev->resource[0]->end = 0x10;
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
+ return pcmcia_request_io(p_dev);
+}
+
+static int fdomain_probe(struct pcmcia_device *link)
+{
+ int ret;
+ struct Scsi_Host *sh;
+
+ link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
+ link->config_regs = PRESENT_OPTION;
+
+ ret = pcmcia_loop_config(link, fdomain_config_check, NULL);
+ if (ret)
+ return ret;
+
+ ret = pcmcia_enable_device(link);
+ if (ret)
+ goto fail;
+
+ sh = fdomain_create(link->resource[0]->start, link->irq, 7, 0, NULL,
+ &link->dev);
+ if (!sh) {
+ dev_err(&link->dev, "Controller initialization failed");
+ ret = -ENODEV;
+ goto fail;
+ }
+
+ link->priv = sh;
+
+ return 0;
+
+fail:
+ pcmcia_disable_device(link);
+ return ret;
+}
+
+static void fdomain_remove(struct pcmcia_device *link)
+{
+ fdomain_destroy(link->priv);
+ pcmcia_disable_device(link);
+}
+
+static const struct pcmcia_device_id fdomain_ids[] = {
+ PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88,
+ 0x859cad20),
+ PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
+ PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation",
+ "SCSI PCMCIA Credit Card Controller",
+ 0x182bdafe, 0xc80d106f),
+ PCMCIA_DEVICE_NULL,
+};
+MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);
+
+static struct pcmcia_driver fdomain_cs_driver = {
+ .owner = THIS_MODULE,
+ .name = "fdomain_cs",
+ .probe = fdomain_probe,
+ .remove = fdomain_remove,
+ .id_table = fdomain_ids,
+};
+
+module_pcmcia_driver(fdomain_cs_driver);
--
Ondrej Zary
^ permalink raw reply related [flat|nested] 9+ messages in thread