#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>
struct gendisk *disk;
struct Scsi_Host *host;
- struct ide_atapi_pc *pc; /* Current packet command */
- unsigned long flags; /* Status/Action flags */
unsigned long transform; /* SCSI cmd translation layer */
unsigned long log; /* log flags */
} idescsi_scsi_t;
mutex_lock(&idescsi_ref_mutex);
scsi = ide_scsi_g(disk);
- if (scsi)
- scsi_host_get(scsi->host);
+ if (scsi) {
+ if (ide_device_get(scsi->drive))
+ scsi = NULL;
+ else
+ scsi_host_get(scsi->host);
+ }
mutex_unlock(&idescsi_ref_mutex);
return scsi;
}
static void ide_scsi_put(struct ide_scsi_obj *scsi)
{
+ ide_drive_t *drive = scsi->drive;
+
mutex_lock(&idescsi_ref_mutex);
scsi_host_put(scsi->host);
+ ide_device_put(drive);
mutex_unlock(&idescsi_ref_mutex);
}
return scsihost_to_idescsi(ide_drive->driver_data);
}
-/*
- * Per ATAPI device status bits.
- */
-#define IDESCSI_DRQ_INTERRUPT 0 /* DRQ interrupt device */
-
-/*
- * ide-scsi requests.
- */
-#define IDESCSI_PC_RQ 90
-
-/*
- * 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;
- xfer_func_t *xf = write ? hwif->output_data : hwif->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);
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__,
/* stuff a sense request in front of our current request */
pc = kzalloc(sizeof(struct ide_atapi_pc), GFP_ATOMIC);
- rq = kmalloc(sizeof(struct request), GFP_ATOMIC);
+ rq = blk_get_request(drive->queue, READ, GFP_ATOMIC);
buf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_ATOMIC);
if (!pc || !rq || !buf) {
kfree(buf);
- kfree(rq);
+ if (rq)
+ blk_put_request(rq);
kfree(pc);
return -ENOMEM;
}
- blk_rq_init(NULL, rq);
rq->special = (char *) pc;
pc->rq = rq;
pc->buf = buf;
rq->cmd_type = REQ_TYPE_SENSE;
rq->cmd_flags |= REQ_PREEMPT;
pc->timeout = jiffies + WAIT_READY;
- pc->callback = ide_scsi_callback;
/* NOTE! Save the failed packet command in "rq->buffer" */
rq->buffer = (void *) failed_cmd->special;
pc->scsi_cmd = ((struct ide_atapi_pc *) failed_cmd->special)->scsi_cmd;
ide_scsi_hex_dump(pc->c, 6);
}
rq->rq_disk = scsi->disk;
+ rq->ref_count++;
+ memcpy(rq->cmd, pc->c, 12);
ide_do_drive_cmd(drive, rq);
return 0;
}
{
ide_hwif_t *hwif = drive->hwif;
- if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
+ if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
/* force an abort */
- hwif->exec_command(hwif, WIN_IDLEIMMEDIATE);
+ hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);
rq->errors++;
SCSI_SENSE_BUFFERSIZE);
kfree(pc->buf);
kfree(pc);
- kfree(rq);
+ blk_put_request(rq);
pc = opc;
rq = pc->rq;
pc->scsi_cmd->result = (CHECK_CONDITION << 1) |
pc->done(pc->scsi_cmd);
spin_unlock_irqrestore(host->host_lock, flags);
kfree(pc);
- kfree(rq);
- scsi->pc = NULL;
+ blk_put_request(rq);
+ 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);
+ return ide_transfer_pc(drive, ide_scsi_get_timeout(drive->pc),
+ ide_scsi_expiry);
}
static inline int idescsi_set_direction(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, idescsi_transfer_pc,
+ ide_scsi_get_timeout(pc), ide_scsi_expiry);
}
/*
if (blk_sense_request(rq) || blk_special_request(rq)) {
struct ide_atapi_pc *pc = (struct ide_atapi_pc *)rq->special;
- idescsi_scsi_t *scsi = drive_to_idescsi(drive);
-
- if (test_bit(IDESCSI_DRQ_INTERRUPT, &scsi->flags))
- pc->flags |= PC_FLAG_DRQ_INTERRUPT;
if (drive->using_dma && !idescsi_map_sg(drive, pc))
pc->flags |= PC_FLAG_DMA_OK;
}
#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
/*
*/
static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
{
- if (drive->id && (drive->id->config & 0x0060) == 0x20)
- set_bit (IDESCSI_DRQ_INTERRUPT, &scsi->flags);
+ if ((drive->id[ATA_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 */
- idescsi_add_settings(drive);
+
+ drive->pc_callback = ide_scsi_callback;
+ drive->pc_update_buffers = NULL;
+ drive->pc_io_buffers = ide_io_buffers;
+
+ ide_proc_register_driver(drive, scsi->driver);
}
static void ide_scsi_remove(ide_drive_t *drive)
.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
};
ide_drive_t *drive = scsi->drive;
struct request *rq = NULL;
struct ide_atapi_pc *pc = NULL;
+ int write = cmd->sc_data_direction == DMA_TO_DEVICE;
if (!drive) {
scmd_printk (KERN_ERR, cmd, "drive not present\n");
}
scsi = drive_to_idescsi(drive);
pc = kmalloc(sizeof(struct ide_atapi_pc), GFP_ATOMIC);
- rq = kmalloc(sizeof(struct request), GFP_ATOMIC);
+ rq = blk_get_request(drive->queue, write, GFP_ATOMIC);
if (rq == NULL || pc == NULL) {
printk (KERN_ERR "ide-scsi: %s: out of memory\n", drive->name);
goto abort;
pc->req_xfer = pc->buf_size = scsi_bufflen(cmd);
pc->scsi_cmd = cmd;
pc->done = done;
- pc->timeout = jiffies + cmd->timeout_per_command;
- pc->callback = ide_scsi_callback;
+ 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);
}
}
- blk_rq_init(NULL, rq);
rq->special = (char *) pc;
rq->cmd_type = REQ_TYPE_SPECIAL;
spin_unlock_irq(host->host_lock);
+ rq->ref_count++;
+ memcpy(rq->cmd, pc->c, 12);
blk_execute_rq_nowait(drive->queue, scsi->disk, rq, 0, NULL);
spin_lock_irq(host->host_lock);
return 0;
abort:
kfree (pc);
- kfree (rq);
+ if (rq)
+ blk_put_request(rq);
cmd->result = DID_ERROR << 16;
done(cmd);
return 0;
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))
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);
- kfree(scsi->pc->rq);
- kfree(scsi->pc);
- scsi->pc = NULL;
+ if (blk_sense_request(pc->rq))
+ kfree(pc->buf);
+ /* we need to call blk_put_request twice. */
+ blk_put_request(pc->rq);
+ blk_put_request(pc->rq);
+ kfree(pc);
+ drive->pc = NULL;
ret = SUCCESS;
}
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))
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);
if (__blk_end_request(req, -EIO, 0))
BUG();
if (blk_sense_request(req))
- kfree(scsi->pc->buf);
- kfree(scsi->pc);
- scsi->pc = NULL;
- kfree(req);
+ kfree(pc->buf);
+ kfree(pc);
+ drive->pc = NULL;
+ blk_put_request(req);
/* now nuke the drive queue */
while ((req = elv_next_request(drive->queue))) {
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");
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;
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;
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;
Code Review / linux-2.6.git / blobdiff