diff options
Diffstat (limited to 'drivers/scsi/ide-scsi.c')
-rw-r--r-- | drivers/scsi/ide-scsi.c | 97 |
1 files changed, 57 insertions, 40 deletions
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 2e2486b035d..3d62c9bcbff 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -46,6 +46,7 @@ #include <linux/slab.h> #include <linux/ide.h> #include <linux/scatterlist.h> +#include <linux/delay.h> #include <asm/io.h> #include <asm/bitops.h> @@ -179,8 +180,18 @@ static void idescsi_input_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsigne 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++; @@ -201,8 +212,18 @@ static void idescsi_output_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsign 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++; @@ -713,7 +734,6 @@ static void idescsi_add_settings(ide_drive_t *drive) */ 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); @@ -722,17 +742,16 @@ static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi) 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 int ide_scsi_remove(struct device *dev) { + ide_drive_t *drive = to_ide_device(dev); 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); @@ -746,7 +765,7 @@ static int idescsi_cleanup (ide_drive_t *drive) return 0; } -static int idescsi_attach(ide_drive_t *drive); +static int ide_scsi_probe(struct device *); #ifdef CONFIG_PROC_FS static ide_proc_entry_t idescsi_proc[] = { @@ -757,24 +776,22 @@ 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 = { + .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) @@ -821,8 +838,6 @@ static struct block_device_operations idescsi_ops = { .ioctl = idescsi_ide_ioctl, }; -static int idescsi_attach(ide_drive_t *drive); - static int idescsi_slave_configure(struct scsi_device * sdp) { /* Configure detected device */ @@ -1012,11 +1027,13 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd) 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; } @@ -1038,16 +1055,15 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd) 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 ); @@ -1058,6 +1074,7 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd) ret = FAILED; } + spin_unlock_irq(cmd->device->host->host_lock); return ret; } @@ -1095,8 +1112,9 @@ static struct scsi_host_template idescsi_template = { .proc_name = "ide-scsi", }; -static int idescsi_attach(ide_drive_t *drive) +static int ide_scsi_probe(struct device *dev) { + ide_drive_t *drive = to_ide_device(dev); idescsi_scsi_t *idescsi; struct Scsi_Host *host; struct gendisk *g; @@ -1112,7 +1130,7 @@ static int idescsi_attach(ide_drive_t *drive) !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) @@ -1138,20 +1156,19 @@ static int idescsi_attach(ide_drive_t *drive) 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: @@ -1161,12 +1178,12 @@ 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_init(init_idescsi_module); |