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linux/drivers/scsi/pcmcia/sym53c500_cs.c
Hannes Reinecke b84b1d522f scsi: Do not set cmd_per_lun to 1 in the host template 
'0' is now used as the default cmd_per_lun value,
so there's no need to explicitly set it to '1' in the
host template.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-05-31 18:06:28 -07:00

898 lines
23 KiB
C
Raw Blame History

/*
* sym53c500_cs.c Bob Tracy (rct@frus.com)
*
* A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
* New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic
* 53c500 controller: intended for use with 2.6 and later kernels.
* The pcmcia-cs add-on version of this driver is not supported
* beyond 2.4. It consisted of three files with history/copyright
* information as follows:
*
* SYM53C500.h
* Bob Tracy (rct@frus.com)
* Original by Tom Corner (tcorner@via.at).
* Adapted from NCR53c406a.h which is Copyrighted (C) 1994
* Normunds Saumanis (normunds@rx.tech.swh.lv)
*
* SYM53C500.c
* Bob Tracy (rct@frus.com)
* Original driver by Tom Corner (tcorner@via.at) was adapted
* from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996
* Normunds Saumanis (normunds@fi.ibm.com)
*
* sym53c500.c
* Bob Tracy (rct@frus.com)
* Original by Tom Corner (tcorner@via.at) was adapted from a
* driver for the Qlogic SCSI card written by
* David Hinds (dhinds@allegro.stanford.edu).
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#define SYM53C500_DEBUG 0
#define VERBOSE_SYM53C500_DEBUG 0
/*
* Set this to 0 if you encounter kernel lockups while transferring
* data in PIO mode. Note this can be changed via "sysfs".
*/
#define USE_FAST_PIO 1
/* =============== End of user configurable parameters ============== */
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <linux/spinlock.h>
#include <linux/bitops.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/irq.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#include <pcmcia/ciscode.h>
/* ================================================================== */
#define SYNC_MODE 0 /* Synchronous transfer mode */
/* Default configuration */
#define C1_IMG 0x07 /* ID=7 */
#define C2_IMG 0x48 /* FE SCSI2 */
#define C3_IMG 0x20 /* CDB */
#define C4_IMG 0x04 /* ANE */
#define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
#define C7_IMG 0x80 /* added for SYM53C500 t. corner */
/* Hardware Registers: offsets from io_port (base) */
/* Control Register Set 0 */
#define TC_LSB 0x00 /* transfer counter lsb */
#define TC_MSB 0x01 /* transfer counter msb */
#define SCSI_FIFO 0x02 /* scsi fifo register */
#define CMD_REG 0x03 /* command register */
#define STAT_REG 0x04 /* status register */
#define DEST_ID 0x04 /* selection/reselection bus id */
#define INT_REG 0x05 /* interrupt status register */
#define SRTIMOUT 0x05 /* select/reselect timeout reg */
#define SEQ_REG 0x06 /* sequence step register */
#define SYNCPRD 0x06 /* synchronous transfer period */
#define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
#define SYNCOFF 0x07 /* synchronous offset register */
#define CONFIG1 0x08 /* configuration register */
#define CLKCONV 0x09 /* clock conversion register */
/* #define TESTREG 0x0A */ /* test mode register */
#define CONFIG2 0x0B /* configuration 2 register */
#define CONFIG3 0x0C /* configuration 3 register */
#define CONFIG4 0x0D /* configuration 4 register */
#define TC_HIGH 0x0E /* transfer counter high */
/* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
/* Control Register Set 1 */
/* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
/* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
/* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
#define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
/* #define PIO_FIFO1 0x05 */ /* */
/* #define PIO_FIFO2 0x06 */ /* */
/* #define PIO_FIFO3 0x07 */ /* */
#define PIO_STATUS 0x08 /* PIO status (r/w) */
/* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
/* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
#define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
#define CONFIG5 0x09 /* configuration 5 register */
/* #define SIGNATURE 0x0E */ /* signature register (r) */
/* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
#define CONFIG7 0x0d
/* select register set 0 */
#define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
/* select register set 1 */
#define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
#if SYM53C500_DEBUG
#define DEB(x) x
#else
#define DEB(x)
#endif
#if VERBOSE_SYM53C500_DEBUG
#define VDEB(x) x
#else
#define VDEB(x)
#endif
#define LOAD_DMA_COUNT(x, count) \
outb(count & 0xff, (x) + TC_LSB); \
outb((count >> 8) & 0xff, (x) + TC_MSB); \
outb((count >> 16) & 0xff, (x) + TC_HIGH);
/* Chip commands */
#define DMA_OP 0x80
#define SCSI_NOP 0x00
#define FLUSH_FIFO 0x01
#define CHIP_RESET 0x02
#define SCSI_RESET 0x03
#define RESELECT 0x40
#define SELECT_NO_ATN 0x41
#define SELECT_ATN 0x42
#define SELECT_ATN_STOP 0x43
#define ENABLE_SEL 0x44
#define DISABLE_SEL 0x45
#define SELECT_ATN3 0x46
#define RESELECT3 0x47
#define TRANSFER_INFO 0x10
#define INIT_CMD_COMPLETE 0x11
#define MSG_ACCEPT 0x12
#define TRANSFER_PAD 0x18
#define SET_ATN 0x1a
#define RESET_ATN 0x1b
#define SEND_MSG 0x20
#define SEND_STATUS 0x21
#define SEND_DATA 0x22
#define DISCONN_SEQ 0x23
#define TERMINATE_SEQ 0x24
#define TARG_CMD_COMPLETE 0x25
#define DISCONN 0x27
#define RECV_MSG 0x28
#define RECV_CMD 0x29
#define RECV_DATA 0x2a
#define RECV_CMD_SEQ 0x2b
#define TARGET_ABORT_DMA 0x04
/* ================================================================== */
struct scsi_info_t {
struct pcmcia_device *p_dev;
struct Scsi_Host *host;
unsigned short manf_id;
};
/*
* Repository for per-instance host data.
*/
struct sym53c500_data {
struct scsi_cmnd *current_SC;
int fast_pio;
};
enum Phase {
idle,
data_out,
data_in,
command_ph,
status_ph,
message_out,
message_in
};
/* ================================================================== */
static void
chip_init(int io_port)
{
REG1(io_port);
outb(0x01, io_port + PIO_STATUS);
outb(0x00, io_port + PIO_FLAG);
outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
outb(C3_IMG, io_port + CONFIG3);
outb(C2_IMG, io_port + CONFIG2);
outb(C1_IMG, io_port + CONFIG1);
outb(0x05, io_port + CLKCONV); /* clock conversion factor */
outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
}
static void
SYM53C500_int_host_reset(int io_port)
{
outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
outb(CHIP_RESET, io_port + CMD_REG);
outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
outb(SCSI_RESET, io_port + CMD_REG);
chip_init(io_port);
}
static __inline__ int
SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
{
int i;
int len; /* current scsi fifo size */
REG1(base);
while (reqlen) {
i = inb(base + PIO_STATUS);
/* VDEB(printk("pio_status=%x\n", i)); */
if (i & 0x80)
return 0;
switch (i & 0x1e) {
default:
case 0x10: /* fifo empty */
len = 0;
break;
case 0x0:
len = 1;
break;
case 0x8: /* fifo 1/3 full */
len = 42;
break;
case 0xc: /* fifo 2/3 full */
len = 84;
break;
case 0xe: /* fifo full */
len = 128;
break;
}
if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
return 0;
}
if (len) {
if (len > reqlen)
len = reqlen;
if (fast_pio && len > 3) {
insl(base + PIO_FIFO, request, len >> 2);
request += len & 0xfc;
reqlen -= len & 0xfc;
} else {
while (len--) {
*request++ = inb(base + PIO_FIFO);
reqlen--;
}
}
}
}
return 0;
}
static __inline__ int
SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
{
int i = 0;
int len; /* current scsi fifo size */
REG1(base);
while (reqlen && !(i & 0x40)) {
i = inb(base + PIO_STATUS);
/* VDEB(printk("pio_status=%x\n", i)); */
if (i & 0x80) /* error */
return 0;
switch (i & 0x1e) {
case 0x10:
len = 128;
break;
case 0x0:
len = 84;
break;
case 0x8:
len = 42;
break;
case 0xc:
len = 1;
break;
default:
case 0xe:
len = 0;
break;
}
if (len) {
if (len > reqlen)
len = reqlen;
if (fast_pio && len > 3) {
outsl(base + PIO_FIFO, request, len >> 2);
request += len & 0xfc;
reqlen -= len & 0xfc;
} else {
while (len--) {
outb(*request++, base + PIO_FIFO);
reqlen--;
}
}
}
}
return 0;
}
static irqreturn_t
SYM53C500_intr(int irq, void *dev_id)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
DEB(unsigned char fifo_size;)
DEB(unsigned char seq_reg;)
unsigned char status, int_reg;
unsigned char pio_status;
int port_base = dev->io_port;
struct sym53c500_data *data =
(struct sym53c500_data *)dev->hostdata;
struct scsi_cmnd *curSC = data->current_SC;
int fast_pio = data->fast_pio;
spin_lock_irqsave(dev->host_lock, flags);
VDEB(printk("SYM53C500_intr called\n"));
REG1(port_base);
pio_status = inb(port_base + PIO_STATUS);
REG0(port_base);
status = inb(port_base + STAT_REG);
DEB(seq_reg = inb(port_base + SEQ_REG));
int_reg = inb(port_base + INT_REG);
DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
#if SYM53C500_DEBUG
printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
status, seq_reg, int_reg, fifo_size);
printk(", pio=%02x\n", pio_status);
#endif /* SYM53C500_DEBUG */
if (int_reg & 0x80) { /* SCSI reset intr */
DEB(printk("SYM53C500: reset intr received\n"));
curSC->result = DID_RESET << 16;
goto idle_out;
}
if (pio_status & 0x80) {
printk("SYM53C500: Warning: PIO error!\n");
curSC->result = DID_ERROR << 16;
goto idle_out;
}
if (status & 0x20) { /* Parity error */
printk("SYM53C500: Warning: parity error!\n");
curSC->result = DID_PARITY << 16;
goto idle_out;
}
if (status & 0x40) { /* Gross error */
printk("SYM53C500: Warning: gross error!\n");
curSC->result = DID_ERROR << 16;
goto idle_out;
}
if (int_reg & 0x20) { /* Disconnect */
DEB(printk("SYM53C500: disconnect intr received\n"));
if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
curSC->result = DID_NO_CONNECT << 16;
} else { /* Command complete, return status and message */
curSC->result = (curSC->SCp.Status & 0xff)
| ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
}
goto idle_out;
}
switch (status & 0x07) { /* scsi phase */
case 0x00: /* DATA-OUT */
if (int_reg & 0x10) { /* Target requesting info transfer */
struct scatterlist *sg;
int i;
curSC->SCp.phase = data_out;
VDEB(printk("SYM53C500: Data-Out phase\n"));
outb(FLUSH_FIFO, port_base + CMD_REG);
LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
SYM53C500_pio_write(fast_pio, port_base,
sg_virt(sg), sg->length);
}
REG0(port_base);
}
break;
case 0x01: /* DATA-IN */
if (int_reg & 0x10) { /* Target requesting info transfer */
struct scatterlist *sg;
int i;
curSC->SCp.phase = data_in;
VDEB(printk("SYM53C500: Data-In phase\n"));
outb(FLUSH_FIFO, port_base + CMD_REG);
LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
SYM53C500_pio_read(fast_pio, port_base,
sg_virt(sg), sg->length);
}
REG0(port_base);
}
break;
case 0x02: /* COMMAND */
curSC->SCp.phase = command_ph;
printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
break;
case 0x03: /* STATUS */
curSC->SCp.phase = status_ph;
VDEB(printk("SYM53C500: Status phase\n"));
outb(FLUSH_FIFO, port_base + CMD_REG);
outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
break;
case 0x04: /* Reserved */
case 0x05: /* Reserved */
printk("SYM53C500: WARNING: Reserved phase!!!\n");
break;
case 0x06: /* MESSAGE-OUT */
DEB(printk("SYM53C500: Message-Out phase\n"));
curSC->SCp.phase = message_out;
outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
outb(MSG_ACCEPT, port_base + CMD_REG);
break;
case 0x07: /* MESSAGE-IN */
VDEB(printk("SYM53C500: Message-In phase\n"));
curSC->SCp.phase = message_in;
curSC->SCp.Status = inb(port_base + SCSI_FIFO);
curSC->SCp.Message = inb(port_base + SCSI_FIFO);
VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
outb(SET_ATN, port_base + CMD_REG); /* Reject message */
DEB(printk("Discarding SAVE_POINTERS message\n"));
}
outb(MSG_ACCEPT, port_base + CMD_REG);
break;
}
out:
spin_unlock_irqrestore(dev->host_lock, flags);
return IRQ_HANDLED;
idle_out:
curSC->SCp.phase = idle;
curSC->scsi_done(curSC);
goto out;
}
static void
SYM53C500_release(struct pcmcia_device *link)
{
struct scsi_info_t *info = link->priv;
struct Scsi_Host *shost = info->host;
dev_dbg(&link->dev, "SYM53C500_release\n");
/*
* Do this before releasing/freeing resources.
*/
scsi_remove_host(shost);
/*
* Interrupts getting hosed on card removal. Try
* the following code, mostly from qlogicfas.c.
*/
if (shost->irq)
free_irq(shost->irq, shost);
if (shost->io_port && shost->n_io_port)
release_region(shost->io_port, shost->n_io_port);
pcmcia_disable_device(link);
scsi_host_put(shost);
} /* SYM53C500_release */
static const char*
SYM53C500_info(struct Scsi_Host *SChost)
{
static char info_msg[256];
struct sym53c500_data *data =
(struct sym53c500_data *)SChost->hostdata;
DEB(printk("SYM53C500_info called\n"));
(void)snprintf(info_msg, sizeof(info_msg),
"SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
return (info_msg);
}
static int
SYM53C500_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
{
int i;
int port_base = SCpnt->device->host->io_port;
struct sym53c500_data *data =
(struct sym53c500_data *)SCpnt->device->host->hostdata;
VDEB(printk("SYM53C500_queue called\n"));
DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
(u8)SCpnt->device->lun, scsi_bufflen(SCpnt)));
VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
VDEB(printk("\n"));
data->current_SC = SCpnt;
data->current_SC->scsi_done = done;
data->current_SC->SCp.phase = command_ph;
data->current_SC->SCp.Status = 0;
data->current_SC->SCp.Message = 0;
/* We are locked here already by the mid layer */
REG0(port_base);
outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
for (i = 0; i < SCpnt->cmd_len; i++) {
outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
}
outb(SELECT_NO_ATN, port_base + CMD_REG);
return 0;
}
static DEF_SCSI_QCMD(SYM53C500_queue)
static int
SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
{
int port_base = SCpnt->device->host->io_port;
DEB(printk("SYM53C500_host_reset called\n"));
spin_lock_irq(SCpnt->device->host->host_lock);
SYM53C500_int_host_reset(port_base);
spin_unlock_irq(SCpnt->device->host->host_lock);
return SUCCESS;
}
static int
SYM53C500_biosparm(struct scsi_device *disk,
struct block_device *dev,
sector_t capacity, int *info_array)
{
int size;
DEB(printk("SYM53C500_biosparm called\n"));
size = capacity;
info_array[0] = 64; /* heads */
info_array[1] = 32; /* sectors */
info_array[2] = size >> 11; /* cylinders */
if (info_array[2] > 1024) { /* big disk */
info_array[0] = 255;
info_array[1] = 63;
info_array[2] = size / (255 * 63);
}
return 0;
}
static ssize_t
SYM53C500_show_pio(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *SHp = class_to_shost(dev);
struct sym53c500_data *data =
(struct sym53c500_data *)SHp->hostdata;
return snprintf(buf, 4, "%d\n", data->fast_pio);
}
static ssize_t
SYM53C500_store_pio(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int pio;
struct Scsi_Host *SHp = class_to_shost(dev);
struct sym53c500_data *data =
(struct sym53c500_data *)SHp->hostdata;
pio = simple_strtoul(buf, NULL, 0);
if (pio == 0 || pio == 1) {
data->fast_pio = pio;
return count;
}
else
return -EINVAL;
}
/*
* SCSI HBA device attributes we want to
* make available via sysfs.
*/
static struct device_attribute SYM53C500_pio_attr = {
.attr = {
.name = "fast_pio",
.mode = (S_IRUGO | S_IWUSR),
},
.show = SYM53C500_show_pio,
.store = SYM53C500_store_pio,
};
static struct device_attribute *SYM53C500_shost_attrs[] = {
&SYM53C500_pio_attr,
NULL,
};
/*
* scsi_host_template initializer
*/
static struct scsi_host_template sym53c500_driver_template = {
.module = THIS_MODULE,
.name = "SYM53C500",
.info = SYM53C500_info,
.queuecommand = SYM53C500_queue,
.eh_host_reset_handler = SYM53C500_host_reset,
.bios_param = SYM53C500_biosparm,
.proc_name = "SYM53C500",
.can_queue = 1,
.this_id = 7,
.sg_tablesize = 32,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = SYM53C500_shost_attrs
};
static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data)
{
p_dev->io_lines = 10;
p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
if (p_dev->resource[0]->start == 0)
return -ENODEV;
return pcmcia_request_io(p_dev);
}
static int
SYM53C500_config(struct pcmcia_device *link)
{
struct scsi_info_t *info = link->priv;
int ret;
int irq_level, port_base;
struct Scsi_Host *host;
struct scsi_host_template *tpnt = &sym53c500_driver_template;
struct sym53c500_data *data;
dev_dbg(&link->dev, "SYM53C500_config\n");
info->manf_id = link->manf_id;
ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL);
if (ret)
goto failed;
if (!link->irq)
goto failed;
ret = pcmcia_enable_device(link);
if (ret)
goto failed;
/*
* That's the trouble with copying liberally from another driver.
* Some things probably aren't relevant, and I suspect this entire
* section dealing with manufacturer IDs can be scrapped. --rct
*/
if ((info->manf_id == MANFID_MACNICA) ||
(info->manf_id == MANFID_PIONEER) ||
(info->manf_id == 0x0098)) {
/* set ATAcmd */
outb(0xb4, link->resource[0]->start + 0xd);
outb(0x24, link->resource[0]->start + 0x9);
outb(0x04, link->resource[0]->start + 0xd);
}
/*
* irq_level == 0 implies tpnt->can_queue == 0, which
* is not supported in 2.6. Thus, only irq_level > 0
* will be allowed.
*
* Possible port_base values are as follows:
*
* 0x130, 0x230, 0x280, 0x290,
* 0x320, 0x330, 0x340, 0x350
*/
port_base = link->resource[0]->start;
irq_level = link->irq;
DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
port_base, irq_level, USE_FAST_PIO);)
chip_init(port_base);
host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
if (!host) {
printk("SYM53C500: Unable to register host, giving up.\n");
goto err_release;
}
data = (struct sym53c500_data *)host->hostdata;
if (irq_level > 0) {
if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) {
printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
goto err_free_scsi;
}
DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
} else if (irq_level == 0) {
DEB(printk("SYM53C500: No interrupts detected\n"));
goto err_free_scsi;
} else {
DEB(printk("SYM53C500: Shouldn't get here!\n"));
goto err_free_scsi;
}
host->unique_id = port_base;
host->irq = irq_level;
host->io_port = port_base;
host->n_io_port = 0x10;
host->dma_channel = -1;
/*
* Note fast_pio is set to USE_FAST_PIO by
* default, but can be changed via "sysfs".
*/
data->fast_pio = USE_FAST_PIO;
info->host = host;
if (scsi_add_host(host, NULL))
goto err_free_irq;
scsi_scan_host(host);
return 0;
err_free_irq:
free_irq(irq_level, host);
err_free_scsi:
scsi_host_put(host);
err_release:
release_region(port_base, 0x10);
printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
return -ENODEV;
failed:
SYM53C500_release(link);
return -ENODEV;
} /* SYM53C500_config */
static int sym53c500_resume(struct pcmcia_device *link)
{
struct scsi_info_t *info = link->priv;
/* See earlier comment about manufacturer IDs. */
if ((info->manf_id == MANFID_MACNICA) ||
(info->manf_id == MANFID_PIONEER) ||
(info->manf_id == 0x0098)) {
outb(0x80, link->resource[0]->start + 0xd);
outb(0x24, link->resource[0]->start + 0x9);
outb(0x04, link->resource[0]->start + 0xd);
}
/*
* If things don't work after a "resume",
* this is a good place to start looking.
*/
SYM53C500_int_host_reset(link->resource[0]->start);
return 0;
}
static void
SYM53C500_detach(struct pcmcia_device *link)
{
dev_dbg(&link->dev, "SYM53C500_detach\n");
SYM53C500_release(link);
kfree(link->priv);
link->priv = NULL;
} /* SYM53C500_detach */
static int
SYM53C500_probe(struct pcmcia_device *link)
{
struct scsi_info_t *info;
dev_dbg(&link->dev, "SYM53C500_attach()\n");
/* Create new SCSI device */
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
info->p_dev = link;
link->priv = info;
link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
return SYM53C500_config(link);
} /* SYM53C500_attach */
MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
MODULE_LICENSE("GPL");
static const struct pcmcia_device_id sym53c500_ids[] = {
PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
PCMCIA_DEVICE_NULL,
};
MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
static struct pcmcia_driver sym53c500_cs_driver = {
.owner = THIS_MODULE,
.name = "sym53c500_cs",
.probe = SYM53C500_probe,
.remove = SYM53C500_detach,
.id_table = sym53c500_ids,
.resume = sym53c500_resume,
};
static int __init
init_sym53c500_cs(void)
{
return pcmcia_register_driver(&sym53c500_cs_driver);
}
static void __exit
exit_sym53c500_cs(void)
{
pcmcia_unregister_driver(&sym53c500_cs_driver);
}
module_init(init_sym53c500_cs);
module_exit(exit_sym53c500_cs);
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