by Osamu Tomita

[permalink] [raw]

Subject: [PATCH 2.5.66-ac1] Rest of PC-9800 support (9/9) SCSI

This is the patch to support NEC PC-9800 subarchitecture
against 2.5.66-ac1. (9/9)

SCSI host adapter support.
- BIOS parameter change for PC98.
- Add pc980155 driver for old PC98.
- wd33c93.c update error handler for eh_*.
- wd33c93.h register to int for PIO mode.

Regards,
Osamu Tomita

diff -Nru linux-2.5.64/drivers/scsi/Kconfig linux98-2.5.64/drivers/scsi/Kconfig
--- linux-2.5.64/drivers/scsi/Kconfig 2003-03-05 13:18:53.000000000 +0900
+++ linux98-2.5.64/drivers/scsi/Kconfig 2003-03-05 15:34:46.000000000 +0900
@@ -1715,6 +1715,11 @@
If you have the NEC PC-9801-55 SCSI interface card or compatibles
for NEC PC-9801/PC-9821, say Y.

+config WD33C93_PIO
+ bool
+ depends on SCSI_PC980155
+ default y
+
# bool 'Cyberstorm Mk III SCSI support (EXPERIMENTAL)' CONFIG_CYBERSTORMIII_SCSI
# bool 'GVP Turbo 040/060 SCSI support (EXPERIMENTAL)' CONFIG_GVP_TURBO_SCSI
endmenu
diff -Nru linux-2.5.64/drivers/scsi/Makefile linux98-2.5.64/drivers/scsi/Makefile
--- linux-2.5.64/drivers/scsi/Makefile 2003-03-05 13:18:54.000000000 +0900
+++ linux98-2.5.64/drivers/scsi/Makefile 2003-03-05 13:40:14.000000000 +0900
@@ -29,6 +29,7 @@
obj-$(CONFIG_A3000_SCSI) += a3000.o wd33c93.o
obj-$(CONFIG_A2091_SCSI) += a2091.o wd33c93.o
obj-$(CONFIG_GVP11_SCSI) += gvp11.o wd33c93.o
+obj-$(CONFIG_SCSI_PC980155) += pc980155.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
diff -Nru linux-2.5.64/drivers/scsi/pc980155.c linux98-2.5.64/drivers/scsi/pc980155.c
--- linux-2.5.64/drivers/scsi/pc980155.c 1970-01-01 09:00:00.000000000 +0900
+++ linux98-2.5.64/drivers/scsi/pc980155.c 2003-03-13 14:31:08.000000000 +0900
@@ -0,0 +1,299 @@
+/*
+ *
+ * drivers/scsi/pc980155.c
+ *
+ * PC-9801-55 SCSI host adapter driver
+ *
+ * Copyright (C) 1997-2003 Kyoto University Microcomputer Club
+ * (Linux/98 project)
+ * Tomoharu Ugawa <[email protected]>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/blk.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+
+#include <asm/dma.h>
+
+#include "scsi.h"
+#include "hosts.h"
+#include "wd33c93.h"
+#include "pc980155.h"
+
+extern int pc98_bios_param(struct scsi_device *, struct block_device *,
+ sector_t, int *);
+static int scsi_pc980155_detect(Scsi_Host_Template *);
+static int scsi_pc980155_release(struct Scsi_Host *);
+
+#ifndef CMD_PER_LUN
+#define CMD_PER_LUN 2
+#endif
+
+#ifndef CAN_QUEUE
+#define CAN_QUEUE 16
+#endif
+
+#undef PC_9801_55_DEBUG
+#undef PC_9801_55_DEBUG_VERBOSE
+
+#define NR_BASE_IOS 4
+static int nr_base_ios = NR_BASE_IOS;
+static unsigned int base_ios[NR_BASE_IOS] = {0xcc0, 0xcd0, 0xce0, 0xcf0};
+static wd33c93_regs init_regs;
+static int io;
+
+static struct Scsi_Host *pc980155_host = NULL;
+
+static void pc980155_intr_handle(int irq, void *dev_id, struct pt_regs *regp);
+
+static inline void pc980155_dma_enable(unsigned int base_io)
+{
+ outb(0x01, REG_CWRITE);
+}
+
+static inline void pc980155_dma_disable(unsigned int base_io)
+{
+ outb(0x02, REG_CWRITE);
+}
+
+
+static void pc980155_intr_handle(int irq, void *dev_id, struct pt_regs *regp)
+{
+ wd33c93_intr(pc980155_host);
+}
+
+static int dma_setup(Scsi_Cmnd *sc, int dir_in)
+{
+ /*
+ * sc->SCp.this_residual : transfer count
+ * sc->SCp.ptr : distination address (virtual address)
+ * dir_in : data direction (DATA_OUT_DIR:0 or DATA_IN_DIR:1)
+ *
+ * if success return 0
+ */
+
+ /*
+ * DMA WRITE MODE
+ * bit 7,6 01b single mode (this mode only)
+ * bit 5 inc/dec (default:0 = inc)
+ * bit 4 auto initialize (normaly:0 = off)
+ * bit 3,2 01b memory -> io
+ * 10b io -> memory
+ * 00b verify
+ * bit 1,0 channel
+ */
+ disable_dma(sc->device->host->dma_channel);
+ set_dma_mode(sc->device->host->dma_channel,
+ 0x40 | (dir_in ? 0x04 : 0x08));
+ clear_dma_ff(sc->device->host->dma_channel);
+ set_dma_addr(sc->device->host->dma_channel, virt_to_phys(sc->SCp.ptr));
+ set_dma_count(sc->device->host->dma_channel, sc->SCp.this_residual);
+#ifdef PC_9801_55_DEBUG
+ printk("D%d(%x)D", sc->device->host->dma_channel,
+ sc->SCp.this_residual);
+#endif
+ enable_dma(sc->device->host->dma_channel);
+ pc980155_dma_enable(sc->device->host->io_port);
+ return 0;
+}
+
+static void dma_stop(struct Scsi_Host *instance, Scsi_Cmnd *sc, int status)
+{
+ /*
+ * instance: Hostadapter's instance
+ * sc: scsi command
+ * status: True if success
+ */
+ pc980155_dma_disable(sc->device->host->io_port);
+ disable_dma(sc->device->host->dma_channel);
+}
+
+/* return non-zero on detection */
+static inline int pc980155_test_port(wd33c93_regs regs)
+{
+ /* Quick and dirty test for presence of the card. */
+ if (inb(regs.SASR) == 0xff)
+ return 0;
+
+ return 1;
+}
+
+static inline int pc980155_getconfig(unsigned int base_io, wd33c93_regs regs,
+ unsigned char* irq, unsigned char* dma,
+ unsigned char* scsi_id)
+{
+ static unsigned char irqs[] = {3, 5, 6, 9, 12, 13};
+ unsigned char result;
+
+ printk(KERN_DEBUG "PC-9801-55: base_io=%x SASR=%x SCMD=%x\n",
+ base_io, regs.SASR, regs.SCMD);
+ result = read_pc980155_resetint(regs);
+ printk(KERN_DEBUG "PC-9801-55: getting config (%x)\n", result);
+ *scsi_id = result & 0x07;
+ *irq = (result >> 3) & 0x07;
+ if (*irq > 5) {
+ printk(KERN_ERR "PC-9801-55 (base %#x): impossible IRQ (%d)"
+ " - other device here?\n", base_io, *irq);
+ return 0;
+ }
+
+ *irq = irqs[*irq];
+ result = inb(REG_STATRD);
+ *dma = result & 0x03;
+ if (*dma == 1) {
+ printk(KERN_ERR
+ "PC-9801-55 (base %#x): impossible DMA channl (%d)"
+ " - other device here?\n", base_io, *dma);
+ return 0;
+ }
+#ifdef PC_9801_55_DEBUG
+ printk("PC-9801-55: end of getconfig\n");
+#endif
+ return 1;
+}
+
+/* return non-zero on detection */
+static int scsi_pc980155_detect(Scsi_Host_Template* tpnt)
+{
+ unsigned int base_io;
+ unsigned char irq, dma, scsi_id;
+ int i;
+#ifdef PC_9801_55_DEBUG
+ unsigned char debug;
+#endif
+
+ if (io) {
+ base_ios[0] = io;
+ nr_base_ios = 1;
+ }
+
+ for (i = 0; i < nr_base_ios; i++) {
+ base_io = base_ios[i];
+ init_regs.SASR = REG_ADDRST;
+ init_regs.SCMD = REG_CONTRL;
+#ifdef PC_9801_55_DEBUG
+ printk("PC-9801-55: SASR(%x = %x)\n", SASR, REG_ADDRST);
+#endif
+ if (!request_region(base_io, 6, "PC-9801-55"))
+ continue;
+
+ if (pc980155_test_port(init_regs) &&
+ pc980155_getconfig(base_io, init_regs,
+ &irq, &dma, &scsi_id))
+ goto found;
+
+ release_region(base_io, 6);
+ }
+
+ printk("PC-9801-55: not found\n");
+ return 0;
+
+ found:
+#ifdef PC_9801_55_DEBUG
+ printk("PC-9801-55: config: base io = %x, irq = %d, dma channel = %d, scsi id = %d\n", base_io, irq, dma, scsi_id);
+#endif
+ if (request_irq(irq, pc980155_intr_handle, 0, "PC-9801-55", NULL)) {
+ printk(KERN_ERR "PC-9801-55: unable to allocate IRQ %d\n", irq);
+ goto err1;
+ }
+
+ if (request_dma(dma, "PC-9801-55")) {
+ printk(KERN_ERR "PC-9801-55: unable to allocate DMA channel %d\n", dma);
+ goto err2;
+ }
+
+ pc980155_host = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
+ if (pc980155_host) {
+ pc980155_host->this_id = scsi_id;
+ pc980155_host->io_port = base_io;
+ pc980155_host->n_io_port = 6;
+ pc980155_host->irq = irq;
+ pc980155_host->dma_channel = dma;
+ printk("PC-9801-55: scsi host found at %x irq = %d, use dma channel %d.\n", base_io, irq, dma);
+ pc980155_int_enable(init_regs);
+ wd33c93_init(pc980155_host, init_regs, dma_setup, dma_stop,
+ WD33C93_FS_12_15);
+ return 1;
+ }
+
+ printk(KERN_ERR "PC-9801-55: failed to register device\n");
+
+err2:
+ free_irq(irq, NULL);
+err1:
+ release_region(base_io, 6);
+ return 0;
+}
+
+static int scsi_pc980155_release(struct Scsi_Host *shost)
+{
+ struct WD33C93_hostdata *hostdata
+ = (struct WD33C93_hostdata *)shost->hostdata;
+
+ pc980155_int_disable(hostdata->regs);
+ release_region(shost->io_port, shost->n_io_port);
+ free_irq(shost->irq, NULL);
+ free_dma(shost->dma_channel);
+ wd33c93_release();
+ return 1;
+}
+
+static int pc980155_bus_reset(Scsi_Cmnd *cmd)
+{
+ struct WD33C93_hostdata *hostdata
+ = (struct WD33C93_hostdata *)cmd->device->host->hostdata;
+
+ pc980155_int_disable(hostdata->regs);
+ pc980155_assert_bus_reset(hostdata->regs);
+ udelay(50);
+ pc980155_negate_bus_reset(hostdata->regs);
+ (void) inb(hostdata->regs.SASR);
+ (void) read_pc980155(hostdata->regs, WD_SCSI_STATUS);
+ pc980155_int_enable(hostdata->regs);
+ wd33c93_host_reset(cmd);
+ return SUCCESS;
+}
+
+
+#ifndef MODULE
+static int __init pc980155_setup(char *str)
+{
+ int ints[4];
+
+ str = get_options(str, ARRAY_SIZE(ints), ints);
+ if (ints[0] > 0)
+ io = ints[1];
+ return 1;
+}
+__setup("pc980155_io=", pc980155_setup);
+#endif
+
+MODULE_PARM(io, "i");
+MODULE_AUTHOR("Tomoharu Ugawa <[email protected]>");
+MODULE_DESCRIPTION("PC-9801-55 SCSI host adapter driver");
+MODULE_LICENSE("GPL");
+
+static Scsi_Host_Template driver_template = {
+ .proc_info = wd33c93_proc_info,
+ .name = "SCSI PC-9801-55",
+ .detect = scsi_pc980155_detect,
+ .release = scsi_pc980155_release,
+ .queuecommand = wd33c93_queuecommand,
+ .eh_abort_handler = wd33c93_abort,
+ .eh_bus_reset_handler = pc980155_bus_reset,
+ .eh_host_reset_handler = wd33c93_host_reset,
+ .bios_param = pc98_bios_param,
+ .can_queue = CAN_QUEUE,
+ .this_id = 7,
+ .sg_tablesize = SG_ALL,
+ .cmd_per_lun = CMD_PER_LUN, /* dont use link command */
+ .unchecked_isa_dma = 1, /* use dma **XXXX***/
+ .use_clustering = ENABLE_CLUSTERING,
+ .proc_name = "PC_9801_55",
+};
+
+#include "scsi_module.c"
diff -Nru linux-2.5.64/drivers/scsi/pc980155.h linux98-2.5.64/drivers/scsi/pc980155.h
--- linux-2.5.64/drivers/scsi/pc980155.h 1970-01-01 09:00:00.000000000 +0900
+++ linux98-2.5.64/drivers/scsi/pc980155.h 2003-03-13 13:48:15.000000000 +0900
@@ -0,0 +1,52 @@
+/*
+ *
+ * drivers/scsi/pc980155.h
+ *
+ * PC-9801-55 SCSI host adapter driver
+ *
+ * Copyright (C) 1997-2003 Kyoto University Microcomputer Club
+ * (Linux/98 project)
+ * Tomoharu Ugawa <[email protected]>
+ *
+ */
+
+#ifndef __PC980155_H
+#define __PC980155_H
+
+#include "wd33c93.h"
+
+#define REG_ADDRST (base_io)
+#define REG_CONTRL (base_io + 2)
+#define REG_CWRITE (base_io + 4)
+#define REG_STATRD (base_io + 4)
+
+#define WD_MEMORYBANK 0x30
+#define WD_RESETINT 0x33
+
+static inline uchar read_pc980155(const wd33c93_regs regs, uchar reg_num)
+{
+ outb(reg_num, regs.SASR);
+ return (uchar)inb(regs.SCMD);
+}
+
+static inline void write_memorybank(const wd33c93_regs regs, uchar value)
+{
+ outb(WD_MEMORYBANK, regs.SASR);
+ outb(value, regs.SCMD);
+}
+
+#define read_pc980155_resetint(regs) \
+ read_pc980155((regs), WD_RESETINT)
+#define pc980155_int_enable(regs) \
+ write_memorybank((regs), read_pc980155((regs), WD_MEMORYBANK) | 0x04)
+
+#define pc980155_int_disable(regs) \
+ write_memorybank((regs), read_pc980155((regs), WD_MEMORYBANK) & ~0x04)
+
+#define pc980155_assert_bus_reset(regs) \
+ write_memorybank((regs), read_pc980155((regs), WD_MEMORYBANK) | 0x02)
+
+#define pc980155_negate_bus_reset(regs) \
+ write_memorybank((regs), read_pc980155((regs), WD_MEMORYBANK) & ~0x02)
+
+#endif /* __PC980155_H */
diff -Nru linux/drivers/scsi/scsi_pc98.c linux98/drivers/scsi/scsi_pc98.c
--- linux/drivers/scsi/scsi_pc98.c 2003-03-05 13:18:57.000000000 +0900
+++ linux98/drivers/scsi/scsi_pc98.c 2003-03-05 13:49:21.000000000 +0900
@@ -48,7 +48,7 @@
int pc98_bios_param(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int *ip)
{
- static struct Scsi_Host *first_real = first_real_host();
+ struct Scsi_Host *first_real = first_real_host();

if (sdev->host == first_real && sdev->id < 7 &&
__PC9800SCA_TEST_BIT(PC9800SCA_DISK_EQUIPS, sdev->id))
diff -Nru linux-2.5.65/drivers/scsi/sd.c linux98-2.5.65/drivers/scsi/sd.c
--- linux-2.5.65/drivers/scsi/sd.c 2003-03-18 06:44:22.000000000 +0900
+++ linux98-2.5.65/drivers/scsi/sd.c 2003-03-20 11:50:17.000000000 +0900
@@ -488,6 +488,15 @@
else
scsicam_bios_param(bdev, sdkp->capacity, diskinfo);

+#ifdef CONFIG_X86_PC9800
+ {
+ extern int pc98_bios_param(struct scsi_device *,
+ struct block_device *,
+ sector_t, int *);
+ pc98_bios_param(sdp, bdev, sdkp->capacity, diskinfo);
+ }
+#endif
+
if (put_user(diskinfo[0], &loc->heads))
return -EFAULT;
if (put_user(diskinfo[1], &loc->sectors))
diff -Nru linux/drivers/scsi/wd33c93.c linux98/drivers/scsi/wd33c93.c
--- linux/drivers/scsi/wd33c93.c 2003-03-23 11:12:16.000000000 +0900
+++ linux98/drivers/scsi/wd33c93.c 2003-03-23 11:30:53.000000000 +0900
@@ -162,8 +162,8 @@
{
uchar data;

- outb(reg_num, *regs.SASR);
- data = inb(*regs.SCMD);
+ outb(reg_num, regs.SASR);
+ data = inb(regs.SCMD);
return data;
}

@@ -172,33 +172,33 @@
{
unsigned long value;

- outb(WD_TRANSFER_COUNT_MSB, *regs.SASR);
- value = inb(*regs.SCMD) << 16;
- value |= inb(*regs.SCMD) << 8;
- value |= inb(*regs.SCMD);
+ outb(WD_TRANSFER_COUNT_MSB, regs.SASR);
+ value = inb(regs.SCMD) << 16;
+ value |= inb(regs.SCMD) << 8;
+ value |= inb(regs.SCMD);
return value;
}

static inline uchar
read_aux_stat(const wd33c93_regs regs)
{
- return inb(*regs.SASR);
+ return inb(regs.SASR);
}

static inline void
write_wd33c93(const wd33c93_regs regs, uchar reg_num, uchar value)
{
- outb(reg_num, *regs.SASR);
- outb(value, *regs.SCMD);
+ outb(reg_num, regs.SASR);
+ outb(value, regs.SCMD);
}

static inline void
write_wd33c93_count(const wd33c93_regs regs, unsigned long value)
{
- outb(WD_TRANSFER_COUNT_MSB, *regs.SASR);
- outb((value >> 16) & 0xff, *regs.SCMD);
- outb((value >> 8) & 0xff, *regs.SCMD);
- outb( value & 0xff, *regs.SCMD);
+ outb(WD_TRANSFER_COUNT_MSB, regs.SASR);
+ outb((value >> 16) & 0xff, regs.SCMD);
+ outb((value >> 8) & 0xff, regs.SCMD);
+ outb( value & 0xff, regs.SCMD);
}

#define write_wd33c93_cmd(regs, cmd) \
@@ -209,9 +209,9 @@
{
int i;

- outb(WD_CDB_1, *regs.SASR);
+ outb(WD_CDB_1, regs.SASR);
for (i=0; i<len; i++)
- outb(cmnd[i], *regs.SCMD);
+ outb(cmnd[i], regs.SCMD);
}

#else /* CONFIG_WD33C93_PIO */
@@ -1522,7 +1522,7 @@
}

int
-wd33c93_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags)
+wd33c93_host_reset(Scsi_Cmnd * SCpnt)
{
struct Scsi_Host *instance;
struct WD33C93_hostdata *hostdata;
@@ -1553,7 +1553,7 @@
reset_wd33c93(instance);
SCpnt->result = DID_RESET << 16;
enable_irq(instance->irq);
- return 0;
+ return SUCCESS;
}

int
@@ -1591,7 +1591,7 @@
instance->host_no, cmd->pid);
enable_irq(cmd->device->host->irq);
cmd->scsi_done(cmd);
- return SCSI_ABORT_SUCCESS;
+ return SUCCESS;
}
prev = tmp;
tmp = (Scsi_Cmnd *) tmp->host_scribble;
@@ -1666,7 +1666,7 @@

enable_irq(cmd->device->host->irq);
cmd->scsi_done(cmd);
- return SCSI_ABORT_SUCCESS;
+ return SUCCESS;
}

/*
@@ -1681,9 +1681,9 @@
printk
("scsi%d: Abort - command %ld found on disconnected_Q - ",
instance->host_no, cmd->pid);
- printk("returning ABORT_SNOOZE. ");
+ printk("Abort SNOOZE. ");
enable_irq(cmd->device->host->irq);
- return SCSI_ABORT_SNOOZE;
+ return FAILED;
}
tmp = (Scsi_Cmnd *) tmp->host_scribble;
}
@@ -1704,7 +1704,7 @@
enable_irq(cmd->device->host->irq);
printk("scsi%d: warning : SCSI command probably completed successfully"
" before abortion. ", instance->host_no);
- return SCSI_ABORT_NOT_RUNNING;
+ return FAILED;
}

#define MAX_WD33C93_HOSTS 4
@@ -1755,7 +1755,7 @@

return 1;
}
-__setup("wd33c9=", wd33c93_setup);
+__setup("wd33c93=", wd33c93_setup);

/* check_setup_args() returns index if key found, 0 if not
*/
@@ -2080,7 +2080,7 @@
{
}

-EXPORT_SYMBOL(wd33c93_reset);
+EXPORT_SYMBOL(wd33c93_host_reset);
EXPORT_SYMBOL(wd33c93_init);
EXPORT_SYMBOL(wd33c93_release);
EXPORT_SYMBOL(wd33c93_abort);
diff -Nru linux/drivers/scsi/wd33c93.h linux98/drivers/scsi/wd33c93.h
--- linux/drivers/scsi/wd33c93.h 2003-03-05 12:29:03.000000000 +0900
+++ linux98/drivers/scsi/wd33c93.h 2003-03-13 14:38:15.000000000 +0900
@@ -186,8 +186,13 @@

/* This is what the 3393 chip looks like to us */
typedef struct {
+#ifdef CONFIG_WD33C93_PIO
+ unsigned int SASR;
+ unsigned int SCMD;
+#else
volatile unsigned char *SASR;
volatile unsigned char *SCMD;
+#endif
} wd33c93_regs;

@@ -334,7 +339,7 @@
int wd33c93_queuecommand (Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *));
void wd33c93_intr (struct Scsi_Host *instance);
int wd33c93_proc_info(char *, char **, off_t, int, int, int);
-int wd33c93_reset (Scsi_Cmnd *, unsigned int);
+int wd33c93_host_reset (Scsi_Cmnd *);
void wd33c93_release(void);

#endif /* WD33C93_H */