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path: root/drivers/scsi/ide-scsi.c
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Diffstat (limited to 'drivers/scsi/ide-scsi.c')
-rw-r--r--drivers/scsi/ide-scsi.c220
1 files changed, 79 insertions, 141 deletions
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 461331d3dc45..740bad435995 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -40,7 +40,6 @@
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <linux/errno.h>
-#include <linux/hdreg.h>
#include <linux/slab.h>
#include <linux/ide.h>
#include <linux/scatterlist.h>
@@ -83,7 +82,6 @@ typedef struct ide_scsi_obj {
struct gendisk *disk;
struct Scsi_Host *host;
- struct ide_atapi_pc *pc; /* Current packet command */
unsigned long transform; /* SCSI cmd translation layer */
unsigned long log; /* log flags */
} idescsi_scsi_t;
@@ -131,50 +129,6 @@ static inline idescsi_scsi_t *drive_to_idescsi(ide_drive_t *ide_drive)
return scsihost_to_idescsi(ide_drive->driver_data);
}
-/*
- * PIO data transfer routine using the scatter gather table.
- */
-static void ide_scsi_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
- unsigned int bcount, int write)
-{
- ide_hwif_t *hwif = drive->hwif;
- const struct ide_tp_ops *tp_ops = hwif->tp_ops;
- xfer_func_t *xf = write ? tp_ops->output_data : tp_ops->input_data;
- char *buf;
- int count;
-
- while (bcount) {
- count = min(pc->sg->length - pc->b_count, bcount);
- if (PageHighMem(sg_page(pc->sg))) {
- unsigned long flags;
-
- local_irq_save(flags);
- buf = kmap_atomic(sg_page(pc->sg), KM_IRQ0) +
- pc->sg->offset;
- xf(drive, NULL, buf + pc->b_count, count);
- kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
- local_irq_restore(flags);
- } else {
- buf = sg_virt(pc->sg);
- xf(drive, NULL, buf + pc->b_count, count);
- }
- bcount -= count; pc->b_count += count;
- if (pc->b_count == pc->sg->length) {
- if (!--pc->sg_cnt)
- break;
- pc->sg = sg_next(pc->sg);
- pc->b_count = 0;
- }
- }
-
- if (bcount) {
- printk(KERN_ERR "%s: scatter gather table too small, %s\n",
- drive->name, write ? "padding with zeros"
- : "discarding data");
- ide_pad_transfer(drive, write, bcount);
- }
-}
-
static void ide_scsi_hex_dump(u8 *data, int len)
{
print_hex_dump(KERN_CONT, "", DUMP_PREFIX_NONE, 16, 1, data, len, 0);
@@ -182,10 +136,10 @@ static void ide_scsi_hex_dump(u8 *data, int len)
static int idescsi_end_request(ide_drive_t *, int, int);
-static void ide_scsi_callback(ide_drive_t *drive)
+static void ide_scsi_callback(ide_drive_t *drive, int dsc)
{
idescsi_scsi_t *scsi = drive_to_idescsi(drive);
- struct ide_atapi_pc *pc = scsi->pc;
+ struct ide_atapi_pc *pc = drive->pc;
if (pc->flags & PC_FLAG_TIMEDOUT)
debug_log("%s: got timed out packet %lu at %lu\n", __func__,
@@ -244,9 +198,9 @@ idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
{
ide_hwif_t *hwif = drive->hwif;
- if (hwif->tp_ops->read_status(hwif) & (BUSY_STAT | DRQ_STAT))
+ if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
/* force an abort */
- hwif->tp_ops->exec_command(hwif, WIN_IDLEIMMEDIATE);
+ hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);
rq->errors++;
@@ -312,49 +266,10 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs)
spin_unlock_irqrestore(host->host_lock, flags);
kfree(pc);
blk_put_request(rq);
- scsi->pc = NULL;
+ drive->pc = NULL;
return 0;
}
-static inline unsigned long get_timeout(struct ide_atapi_pc *pc)
-{
- return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
-}
-
-static int idescsi_expiry(ide_drive_t *drive)
-{
- idescsi_scsi_t *scsi = drive_to_idescsi(drive);
- struct ide_atapi_pc *pc = scsi->pc;
-
- debug_log("%s called for %lu at %lu\n", __func__,
- pc->scsi_cmd->serial_number, jiffies);
-
- pc->flags |= PC_FLAG_TIMEDOUT;
-
- return 0; /* we do not want the ide subsystem to retry */
-}
-
-/*
- * Our interrupt handler.
- */
-static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
-{
- idescsi_scsi_t *scsi = drive_to_idescsi(drive);
- struct ide_atapi_pc *pc = scsi->pc;
-
- return ide_pc_intr(drive, pc, idescsi_pc_intr, get_timeout(pc),
- idescsi_expiry, NULL, NULL, NULL,
- ide_scsi_io_buffers);
-}
-
-static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive)
-{
- idescsi_scsi_t *scsi = drive_to_idescsi(drive);
-
- return ide_transfer_pc(drive, scsi->pc, idescsi_pc_intr,
- get_timeout(scsi->pc), idescsi_expiry);
-}
-
static inline int idescsi_set_direction(struct ide_atapi_pc *pc)
{
switch (pc->c[0]) {
@@ -397,13 +312,10 @@ static int idescsi_map_sg(ide_drive_t *drive, struct ide_atapi_pc *pc)
static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive,
struct ide_atapi_pc *pc)
{
- idescsi_scsi_t *scsi = drive_to_idescsi(drive);
-
/* Set the current packet command */
- scsi->pc = pc;
+ drive->pc = pc;
- return ide_issue_pc(drive, pc, idescsi_transfer_pc,
- get_timeout(pc), idescsi_expiry);
+ return ide_issue_pc(drive, ide_scsi_get_timeout(pc), ide_scsi_expiry);
}
/*
@@ -419,7 +331,8 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r
if (blk_sense_request(rq) || blk_special_request(rq)) {
struct ide_atapi_pc *pc = (struct ide_atapi_pc *)rq->special;
- if (drive->using_dma && !idescsi_map_sg(drive, pc))
+ if ((drive->dev_flags & IDE_DFLAG_USING_DMA) &&
+ idescsi_map_sg(drive, pc) == 0)
pc->flags |= PC_FLAG_DMA_OK;
return idescsi_issue_pc(drive, pc);
@@ -430,21 +343,41 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r
}
#ifdef CONFIG_IDE_PROC_FS
-static void idescsi_add_settings(ide_drive_t *drive)
-{
- idescsi_scsi_t *scsi = drive_to_idescsi(drive);
-
-/*
- * drive setting name read/write data type min max mul_factor div_factor data pointer set function
- */
- ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL);
- ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
- ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
- ide_add_setting(drive, "transform", SETTING_RW, TYPE_INT, 0, 3, 1, 1, &scsi->transform, NULL);
- ide_add_setting(drive, "log", SETTING_RW, TYPE_INT, 0, 1, 1, 1, &scsi->log, NULL);
-}
-#else
-static inline void idescsi_add_settings(ide_drive_t *drive) { ; }
+#define ide_scsi_devset_get(name, field) \
+static int get_##name(ide_drive_t *drive) \
+{ \
+ idescsi_scsi_t *scsi = drive_to_idescsi(drive); \
+ return scsi->field; \
+}
+
+#define ide_scsi_devset_set(name, field) \
+static int set_##name(ide_drive_t *drive, int arg) \
+{ \
+ idescsi_scsi_t *scsi = drive_to_idescsi(drive); \
+ scsi->field = arg; \
+ return 0; \
+}
+
+#define ide_scsi_devset_rw_field(_name, _field) \
+ide_scsi_devset_get(_name, _field); \
+ide_scsi_devset_set(_name, _field); \
+IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name);
+
+ide_devset_rw_field(bios_cyl, bios_cyl);
+ide_devset_rw_field(bios_head, bios_head);
+ide_devset_rw_field(bios_sect, bios_sect);
+
+ide_scsi_devset_rw_field(transform, transform);
+ide_scsi_devset_rw_field(log, log);
+
+static const struct ide_proc_devset idescsi_settings[] = {
+ IDE_PROC_DEVSET(bios_cyl, 0, 1023),
+ IDE_PROC_DEVSET(bios_head, 0, 255),
+ IDE_PROC_DEVSET(bios_sect, 0, 63),
+ IDE_PROC_DEVSET(log, 0, 1),
+ IDE_PROC_DEVSET(transform, 0, 3),
+ { 0 },
+};
#endif
/*
@@ -452,16 +385,16 @@ static inline void idescsi_add_settings(ide_drive_t *drive) { ; }
*/
static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
{
- if (drive->id && (drive->id->config & 0x0060) == 0x20)
- set_bit(IDE_AFLAG_DRQ_INTERRUPT, &drive->atapi_flags);
clear_bit(IDESCSI_SG_TRANSFORM, &scsi->transform);
#if IDESCSI_DEBUG_LOG
set_bit(IDESCSI_LOG_CMD, &scsi->log);
#endif /* IDESCSI_DEBUG_LOG */
- drive->pc_callback = ide_scsi_callback;
+ drive->pc_callback = ide_scsi_callback;
+ drive->pc_update_buffers = NULL;
+ drive->pc_io_buffers = ide_io_buffers;
- idescsi_add_settings(drive);
+ ide_proc_register_driver(drive, scsi->driver);
}
static void ide_scsi_remove(ide_drive_t *drive)
@@ -481,7 +414,7 @@ static void ide_scsi_remove(ide_drive_t *drive)
ide_scsi_put(scsi);
- drive->scsi = 0;
+ drive->dev_flags &= ~IDE_DFLAG_SCSI;
}
static int ide_scsi_probe(ide_drive_t *);
@@ -502,13 +435,12 @@ static ide_driver_t idescsi_driver = {
.probe = ide_scsi_probe,
.remove = ide_scsi_remove,
.version = IDESCSI_VERSION,
- .media = ide_scsi,
- .supports_dsc_overlap = 0,
.do_request = idescsi_do_request,
.end_request = idescsi_end_request,
.error = idescsi_atapi_error,
#ifdef CONFIG_IDE_PROC_FS
.proc = idescsi_proc,
+ .settings = idescsi_settings,
#endif
};
@@ -612,7 +544,7 @@ static int idescsi_queue (struct scsi_cmnd *cmd,
pc->req_xfer = pc->buf_size = scsi_bufflen(cmd);
pc->scsi_cmd = cmd;
pc->done = done;
- pc->timeout = jiffies + cmd->timeout_per_command;
+ pc->timeout = jiffies + cmd->request->timeout;
if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) {
printk ("ide-scsi: %s: que %lu, cmd = ", drive->name, cmd->serial_number);
@@ -647,6 +579,8 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
int busy;
int ret = FAILED;
+ struct ide_atapi_pc *pc;
+
/* In idescsi_eh_abort we try to gently pry our command from the ide subsystem */
if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
@@ -667,26 +601,27 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
spin_lock_irq(&ide_lock);
/* If there is no pc running we're done (our interrupt took care of it) */
- if (!scsi->pc) {
+ pc = drive->pc;
+ if (pc == NULL) {
ret = SUCCESS;
goto ide_unlock;
}
/* It's somewhere in flight. Does ide subsystem agree? */
- if (scsi->pc->scsi_cmd->serial_number == cmd->serial_number && !busy &&
- elv_queue_empty(drive->queue) && HWGROUP(drive)->rq != scsi->pc->rq) {
+ if (pc->scsi_cmd->serial_number == cmd->serial_number && !busy &&
+ elv_queue_empty(drive->queue) && HWGROUP(drive)->rq != pc->rq) {
/*
* FIXME - not sure this condition can ever occur
*/
printk (KERN_ERR "ide-scsi: cmd aborted!\n");
- if (blk_sense_request(scsi->pc->rq))
- kfree(scsi->pc->buf);
+ if (blk_sense_request(pc->rq))
+ kfree(pc->buf);
/* we need to call blk_put_request twice. */
- blk_put_request(scsi->pc->rq);
- blk_put_request(scsi->pc->rq);
- kfree(scsi->pc);
- scsi->pc = NULL;
+ blk_put_request(pc->rq);
+ blk_put_request(pc->rq);
+ kfree(pc);
+ drive->pc = NULL;
ret = SUCCESS;
}
@@ -708,6 +643,8 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
int ready = 0;
int ret = SUCCESS;
+ struct ide_atapi_pc *pc;
+
/* In idescsi_eh_reset we forcefully remove the command from the ide subsystem and reset the device. */
if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
@@ -722,7 +659,9 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
spin_lock_irq(cmd->device->host->host_lock);
spin_lock(&ide_lock);
- if (!scsi->pc || (req = scsi->pc->rq) != HWGROUP(drive)->rq || !HWGROUP(drive)->handler) {
+ pc = drive->pc;
+
+ if (pc == NULL || (req = pc->rq) != HWGROUP(drive)->rq || !HWGROUP(drive)->handler) {
printk (KERN_WARNING "ide-scsi: No active request in idescsi_eh_reset\n");
spin_unlock(&ide_lock);
spin_unlock_irq(cmd->device->host->host_lock);
@@ -733,9 +672,9 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
if (__blk_end_request(req, -EIO, 0))
BUG();
if (blk_sense_request(req))
- kfree(scsi->pc->buf);
- kfree(scsi->pc);
- scsi->pc = NULL;
+ kfree(pc->buf);
+ kfree(pc);
+ drive->pc = NULL;
blk_put_request(req);
/* now nuke the drive queue */
@@ -811,6 +750,7 @@ static int ide_scsi_probe(ide_drive_t *drive)
struct gendisk *g;
static int warned;
int err = -ENOMEM;
+ u16 last_lun;
if (!warned && drive->media == ide_cdrom) {
printk(KERN_WARNING "ide-scsi is deprecated for cd burning! Use ide-cd and give dev=/dev/hdX as device\n");
@@ -821,12 +761,11 @@ static int ide_scsi_probe(ide_drive_t *drive)
return -ENODEV;
if (!strstr("ide-scsi", drive->driver_req) ||
- !drive->present ||
drive->media == ide_disk ||
!(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t))))
return -ENODEV;
- drive->scsi = 1;
+ drive->dev_flags |= IDE_DFLAG_SCSI;
g = alloc_disk(1 << PARTN_BITS);
if (!g)
@@ -836,12 +775,12 @@ static int ide_scsi_probe(ide_drive_t *drive)
host->max_id = 1;
- if (drive->id->last_lun)
- debug_log("%s: id->last_lun=%u\n", drive->name,
- drive->id->last_lun);
+ last_lun = drive->id[ATA_ID_LAST_LUN];
+ if (last_lun)
+ debug_log("%s: last_lun=%u\n", drive->name, last_lun);
- if ((drive->id->last_lun & 0x7) != 7)
- host->max_lun = (drive->id->last_lun & 0x7) + 1;
+ if ((last_lun & 7) != 7)
+ host->max_lun = (last_lun & 7) + 1;
else
host->max_lun = 1;
@@ -852,7 +791,6 @@ static int ide_scsi_probe(ide_drive_t *drive)
idescsi->host = host;
idescsi->disk = g;
g->private_data = &idescsi->driver;
- ide_proc_register_driver(drive, &idescsi_driver);
err = 0;
idescsi_setup(drive, idescsi);
g->fops = &idescsi_ops;
@@ -868,7 +806,7 @@ static int ide_scsi_probe(ide_drive_t *drive)
put_disk(g);
out_host_put:
- drive->scsi = 0;
+ drive->dev_flags &= ~IDE_DFLAG_SCSI;
scsi_host_put(host);
return err;
}