#define IDESCSI_VERSION "0.92"
#include <linux/module.h>
-#include <linux/config.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/ide.h>
#include <linux/scatterlist.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
#include <asm/io.h>
#include <asm/bitops.h>
unsigned long log; /* log flags */
} idescsi_scsi_t;
-static DECLARE_MUTEX(idescsi_ref_sem);
+static DEFINE_MUTEX(idescsi_ref_mutex);
+static int idescsi_nocd; /* Set by module param to skip cd */
#define ide_scsi_g(disk) \
container_of((disk)->private_data, struct ide_scsi_obj, driver)
{
struct ide_scsi_obj *scsi = NULL;
- down(&idescsi_ref_sem);
+ mutex_lock(&idescsi_ref_mutex);
scsi = ide_scsi_g(disk);
if (scsi)
scsi_host_get(scsi->host);
- up(&idescsi_ref_sem);
+ mutex_unlock(&idescsi_ref_mutex);
return scsi;
}
static void ide_scsi_put(struct ide_scsi_obj *scsi)
{
- down(&idescsi_ref_sem);
+ mutex_lock(&idescsi_ref_mutex);
scsi_host_put(scsi->host);
- up(&idescsi_ref_sem);
+ mutex_unlock(&idescsi_ref_mutex);
}
static inline idescsi_scsi_t *scsihost_to_idescsi(struct Scsi_Host *host)
return;
}
count = min(pc->sg->length - pc->b_count, bcount);
- buf = page_address(pc->sg->page) + pc->sg->offset;
- drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count);
+ if (PageHighMem(pc->sg->page)) {
+ unsigned long flags;
+
+ local_irq_save(flags);
+ buf = kmap_atomic(pc->sg->page, KM_IRQ0) +
+ pc->sg->offset;
+ drive->hwif->atapi_input_bytes(drive,
+ buf + pc->b_count, count);
+ kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
+ local_irq_restore(flags);
+ } else {
+ buf = page_address(pc->sg->page) + pc->sg->offset;
+ drive->hwif->atapi_input_bytes(drive,
+ buf + pc->b_count, count);
+ }
bcount -= count; pc->b_count += count;
if (pc->b_count == pc->sg->length) {
pc->sg++;
return;
}
count = min(pc->sg->length - pc->b_count, bcount);
- buf = page_address(pc->sg->page) + pc->sg->offset;
- drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count);
+ if (PageHighMem(pc->sg->page)) {
+ unsigned long flags;
+
+ local_irq_save(flags);
+ buf = kmap_atomic(pc->sg->page, KM_IRQ0) +
+ pc->sg->offset;
+ drive->hwif->atapi_output_bytes(drive,
+ buf + pc->b_count, count);
+ kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
+ local_irq_restore(flags);
+ } else {
+ buf = page_address(pc->sg->page) + pc->sg->offset;
+ drive->hwif->atapi_output_bytes(drive,
+ buf + pc->b_count, count);
+ }
bcount -= count; pc->b_count += count;
if (pc->b_count == pc->sg->length) {
pc->sg++;
rq = kmalloc (sizeof (struct request), GFP_ATOMIC);
buf = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_ATOMIC);
if (pc == NULL || rq == NULL || buf == NULL) {
- if (pc) kfree(pc);
- if (rq) kfree(rq);
- if (buf) kfree(buf);
+ kfree(buf);
+ kfree(rq);
+ kfree(pc);
return -ENOMEM;
}
memset (pc, 0, sizeof (idescsi_pc_t));
pc->buffer = buf;
pc->c[0] = REQUEST_SENSE;
pc->c[4] = pc->request_transfer = pc->buffer_size = SCSI_SENSE_BUFFERSIZE;
- rq->flags = REQ_SENSE;
+ rq->cmd_type = REQ_TYPE_SENSE;
pc->timeout = jiffies + WAIT_READY;
/* NOTE! Save the failed packet command in "rq->buffer" */
rq->buffer = (void *) failed_command->special;
int log = test_bit(IDESCSI_LOG_CMD, &scsi->log);
struct Scsi_Host *host;
u8 *scsi_buf;
+ int errors = rq->errors;
unsigned long flags;
- if (!(rq->flags & (REQ_SPECIAL|REQ_SENSE))) {
+ if (!blk_special_request(rq) && !blk_sense_request(rq)) {
ide_end_request(drive, uptodate, nrsecs);
return 0;
}
ide_end_drive_cmd (drive, 0, 0);
- if (rq->flags & REQ_SENSE) {
+ if (blk_sense_request(rq)) {
idescsi_pc_t *opc = (idescsi_pc_t *) rq->buffer;
if (log) {
printk ("ide-scsi: %s: wrap up check %lu, rst = ", drive->name, opc->scsi_cmd->serial_number);
printk (KERN_WARNING "ide-scsi: %s: timed out for %lu\n",
drive->name, pc->scsi_cmd->serial_number);
pc->scsi_cmd->result = DID_TIME_OUT << 16;
- } else if (rq->errors >= ERROR_MAX) {
+ } else if (errors >= ERROR_MAX) {
pc->scsi_cmd->result = DID_ERROR << 16;
if (log)
printk ("ide-scsi: %s: I/O error for %lu\n", drive->name, pc->scsi_cmd->serial_number);
- } else if (rq->errors) {
+ } else if (errors) {
if (log)
printk ("ide-scsi: %s: check condition for %lu\n", drive->name, pc->scsi_cmd->serial_number);
if (!idescsi_check_condition(drive, rq))
/* No more interrupts */
if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
printk (KERN_INFO "Packet command completed, %d bytes transferred\n", pc->actually_transferred);
- local_irq_enable();
+ local_irq_enable_in_hardirq();
if (status.b.check)
rq->errors++;
idescsi_end_request (drive, 1, 0);
"issuing a packet command\n");
return ide_do_reset (drive);
}
- if (HWGROUP(drive)->handler != NULL)
- BUG();
+ BUG_ON(HWGROUP(drive)->handler != NULL);
/* Set the interrupt routine */
ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry);
/* Send the actual packet */
set_bit(PC_DMA_OK, &pc->flags);
if (test_bit(IDESCSI_DRQ_INTERRUPT, &scsi->flags)) {
- if (HWGROUP(drive)->handler != NULL)
- BUG();
+ BUG_ON(HWGROUP(drive)->handler != NULL);
ide_set_handler(drive, &idescsi_transfer_pc,
get_timeout(pc), idescsi_expiry);
/* Issue the packet command */
static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *rq, sector_t block)
{
#if IDESCSI_DEBUG_LOG
- printk (KERN_INFO "rq_status: %d, dev: %s, cmd: %x, errors: %d\n",rq->rq_status, rq->rq_disk->disk_name,rq->cmd[0],rq->errors);
+ printk (KERN_INFO "dev: %s, cmd: %x, errors: %d\n", rq->rq_disk->disk_name,rq->cmd[0],rq->errors);
printk (KERN_INFO "sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",rq->sector,rq->nr_sectors,rq->current_nr_sectors);
#endif /* IDESCSI_DEBUG_LOG */
- if (rq->flags & (REQ_SPECIAL|REQ_SENSE)) {
+ if (blk_sense_request(rq) || blk_special_request(rq)) {
return idescsi_issue_pc (drive, (idescsi_pc_t *) rq->special);
}
blk_dump_rq_flags(rq, "ide-scsi: unsup command");
*/
static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
{
- DRIVER(drive)->busy++;
if (drive->id && (drive->id->config & 0x0060) == 0x20)
set_bit (IDESCSI_DRQ_INTERRUPT, &scsi->flags);
set_bit(IDESCSI_TRANSFORM, &scsi->transform);
set_bit(IDESCSI_LOG_CMD, &scsi->log);
#endif /* IDESCSI_DEBUG_LOG */
idescsi_add_settings(drive);
- DRIVER(drive)->busy--;
}
-static int idescsi_cleanup (ide_drive_t *drive)
+static void ide_scsi_remove(ide_drive_t *drive)
{
struct Scsi_Host *scsihost = drive->driver_data;
struct ide_scsi_obj *scsi = scsihost_to_idescsi(scsihost);
struct gendisk *g = scsi->disk;
- if (ide_unregister_subdriver(drive))
- return 1;
+ ide_unregister_subdriver(drive, scsi->driver);
ide_unregister_region(g);
scsi_remove_host(scsihost);
ide_scsi_put(scsi);
-
- return 0;
}
-static int idescsi_attach(ide_drive_t *drive);
+static int ide_scsi_probe(ide_drive_t *);
#ifdef CONFIG_PROC_FS
static ide_proc_entry_t idescsi_proc[] = {
# define idescsi_proc NULL
#endif
-/*
- * IDE subdriver functions, registered with ide.c
- */
static ide_driver_t idescsi_driver = {
- .owner = THIS_MODULE,
- .name = "ide-scsi",
+ .gen_driver = {
+ .owner = THIS_MODULE,
+ .name = "ide-scsi",
+ .bus = &ide_bus_type,
+ },
+ .probe = ide_scsi_probe,
+ .remove = ide_scsi_remove,
.version = IDESCSI_VERSION,
.media = ide_scsi,
- .busy = 0,
.supports_dsc_overlap = 0,
.proc = idescsi_proc,
- .attach = idescsi_attach,
- .cleanup = idescsi_cleanup,
.do_request = idescsi_do_request,
.end_request = idescsi_end_request,
.error = idescsi_atapi_error,
.abort = idescsi_atapi_abort,
- .drives = LIST_HEAD_INIT(idescsi_driver.drives),
};
static int idescsi_ide_open(struct inode *inode, struct file *filp)
.ioctl = idescsi_ide_ioctl,
};
-static int idescsi_attach(ide_drive_t *drive);
-
static int idescsi_slave_configure(struct scsi_device * sdp)
{
/* Configure detected device */
struct gendisk *disk = cmd->request->rq_disk;
if (disk) {
- struct Scsi_Device_Template **p = disk->private_data;
+ struct struct scsi_device_Template **p = disk->private_data;
if (strcmp((*p)->scsi_driverfs_driver.name, "sg") == 0)
return test_bit(IDESCSI_SG_TRANSFORM, &scsi->transform);
}
idescsi_pc_t *pc = NULL;
if (!drive) {
- printk (KERN_ERR "ide-scsi: drive id %d not present\n", cmd->device->id);
+ scmd_printk (KERN_ERR, cmd, "drive not present\n");
goto abort;
}
scsi = drive_to_idescsi(drive);
ide_init_drive_cmd (rq);
rq->special = (char *) pc;
- rq->flags = REQ_SPECIAL;
+ rq->cmd_type = REQ_TYPE_SPECIAL;
spin_unlock_irq(host->host_lock);
rq->rq_disk = scsi->disk;
(void) ide_do_drive_cmd (drive, rq, ide_end);
spin_lock_irq(host->host_lock);
return 0;
abort:
- if (pc) kfree (pc);
- if (rq) kfree (rq);
+ kfree (pc);
+ kfree (rq);
cmd->result = DID_ERROR << 16;
done(cmd);
return 0;
*/
printk (KERN_ERR "ide-scsi: cmd aborted!\n");
- if (scsi->pc->rq->flags & REQ_SENSE)
+ if (blk_sense_request(scsi->pc->rq))
kfree(scsi->pc->buffer);
kfree(scsi->pc->rq);
kfree(scsi->pc);
return FAILED;
}
- spin_lock_irq(&ide_lock);
+ 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) {
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);
return FAILED;
}
/* kill current request */
blkdev_dequeue_request(req);
- end_that_request_last(req);
- if (req->flags & REQ_SENSE)
+ end_that_request_last(req, 0);
+ if (blk_sense_request(req))
kfree(scsi->pc->buffer);
kfree(scsi->pc);
scsi->pc = NULL;
/* now nuke the drive queue */
while ((req = elv_next_request(drive->queue))) {
blkdev_dequeue_request(req);
- end_that_request_last(req);
+ end_that_request_last(req, 0);
}
HWGROUP(drive)->rq = NULL;
HWGROUP(drive)->handler = NULL;
HWGROUP(drive)->busy = 1; /* will set this to zero when ide reset finished */
- spin_unlock_irq(&ide_lock);
+ spin_unlock(&ide_lock);
ide_do_reset(drive);
/* ide_do_reset starts a polling handler which restarts itself every 50ms until the reset finishes */
do {
- set_current_state(TASK_UNINTERRUPTIBLE);
spin_unlock_irq(cmd->device->host->host_lock);
- schedule_timeout(HZ/20);
+ msleep(50);
spin_lock_irq(cmd->device->host->host_lock);
} while ( HWGROUP(drive)->handler );
ret = FAILED;
}
+ spin_unlock_irq(cmd->device->host->host_lock);
return ret;
}
.proc_name = "ide-scsi",
};
-static int idescsi_attach(ide_drive_t *drive)
+static int ide_scsi_probe(ide_drive_t *drive)
{
idescsi_scsi_t *idescsi;
struct Scsi_Host *host;
warned = 1;
}
+ if (idescsi_nocd && drive->media == ide_cdrom)
+ 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 1;
+ return -ENODEV;
g = alloc_disk(1 << PARTN_BITS);
if (!g)
idescsi->host = host;
idescsi->disk = g;
g->private_data = &idescsi->driver;
- err = ide_register_subdriver(drive, &idescsi_driver);
+ ide_register_subdriver(drive, &idescsi_driver);
+ err = 0;
+ idescsi_setup(drive, idescsi);
+ g->fops = &idescsi_ops;
+ ide_register_region(g);
+ err = scsi_add_host(host, &drive->gendev);
if (!err) {
- idescsi_setup (drive, idescsi);
- g->fops = &idescsi_ops;
- ide_register_region(g);
- err = scsi_add_host(host, &drive->gendev);
- if (!err) {
- scsi_scan_host(host);
- return 0;
- }
- /* fall through on error */
- ide_unregister_region(g);
- ide_unregister_subdriver(drive);
+ scsi_scan_host(host);
+ return 0;
}
+ /* fall through on error */
+ ide_unregister_region(g);
+ ide_unregister_subdriver(drive, &idescsi_driver);
put_disk(g);
out_host_put:
static int __init init_idescsi_module(void)
{
- return ide_register_driver(&idescsi_driver);
+ return driver_register(&idescsi_driver.gen_driver);
}
static void __exit exit_idescsi_module(void)
{
- ide_unregister_driver(&idescsi_driver);
+ driver_unregister(&idescsi_driver.gen_driver);
}
+module_param(idescsi_nocd, int, 0600);
+MODULE_PARM_DESC(idescsi_nocd, "Disable handling of CD-ROMs so they may be driven by ide-cd");
module_init(init_idescsi_module);
module_exit(exit_idescsi_module);
MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff