#include <linux/genhd.h>
#include <linux/slab.h>
#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/leds.h>
#define _IDE_DISK
struct kref kref;
};
-static DECLARE_MUTEX(idedisk_ref_sem);
+static DEFINE_MUTEX(idedisk_ref_mutex);
#define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref)
{
struct ide_disk_obj *idkp = NULL;
- down(&idedisk_ref_sem);
+ mutex_lock(&idedisk_ref_mutex);
idkp = ide_disk_g(disk);
if (idkp)
kref_get(&idkp->kref);
- up(&idedisk_ref_sem);
+ mutex_unlock(&idedisk_ref_mutex);
return idkp;
}
static void ide_disk_put(struct ide_disk_obj *idkp)
{
- down(&idedisk_ref_sem);
+ mutex_lock(&idedisk_ref_mutex);
kref_put(&idkp->kref, ide_disk_release);
- up(&idedisk_ref_sem);
+ mutex_unlock(&idedisk_ref_mutex);
}
/*
{
unsigned long lba_sects, chs_sects, head, tail;
+ /* No non-LBA info .. so valid! */
+ if (id->cyls == 0)
+ return 1;
+
/*
* The ATA spec tells large drives to return
* C/H/S = 16383/16/63 independent of their size.
if (lba48) {
task_ioreg_t tasklets[10];
- pr_debug("%s: LBA=0x%012llx\n", drive->name, block);
+ pr_debug("%s: LBA=0x%012llx\n", drive->name,
+ (unsigned long long)block);
tasklets[0] = 0;
tasklets[1] = 0;
return ide_stopped;
}
+ ledtrig_ide_activity();
+
pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n",
drive->name, rq_data_dir(rq) == READ ? "read" : "writ",
- block, rq->nr_sectors, (unsigned long)rq->buffer);
+ (unsigned long long)block, rq->nr_sectors,
+ (unsigned long)rq->buffer);
if (hwif->rw_disk)
hwif->rw_disk(drive, rq);
&& id->lba_capacity_2;
}
-static inline void idedisk_check_hpa(ide_drive_t *drive)
+static void idedisk_check_hpa(ide_drive_t *drive)
{
unsigned long long capacity, set_max;
int lba48 = idedisk_supports_lba48(drive->id);
#endif /* CONFIG_PROC_FS */
-static void idedisk_end_flush(request_queue_t *q, struct request *flush_rq)
+static void idedisk_prepare_flush(request_queue_t *q, struct request *rq)
{
ide_drive_t *drive = q->queuedata;
- struct request *rq = flush_rq->end_io_data;
- int good_sectors = rq->hard_nr_sectors;
- int bad_sectors;
- sector_t sector;
-
- if (flush_rq->errors & ABRT_ERR) {
- printk(KERN_ERR "%s: barrier support doesn't work\n", drive->name);
- blk_queue_ordered(drive->queue, QUEUE_ORDERED_NONE);
- blk_queue_issue_flush_fn(drive->queue, NULL);
- good_sectors = 0;
- } else if (flush_rq->errors) {
- good_sectors = 0;
- if (blk_barrier_preflush(rq)) {
- sector = ide_get_error_location(drive,flush_rq->buffer);
- if ((sector >= rq->hard_sector) &&
- (sector < rq->hard_sector + rq->hard_nr_sectors))
- good_sectors = sector - rq->hard_sector;
- }
- }
-
- if (flush_rq->errors)
- printk(KERN_ERR "%s: failed barrier write: "
- "sector=%Lx(good=%d/bad=%d)\n",
- drive->name, (unsigned long long)rq->sector,
- good_sectors,
- (int) (rq->hard_nr_sectors-good_sectors));
-
- bad_sectors = rq->hard_nr_sectors - good_sectors;
-
- if (good_sectors)
- __ide_end_request(drive, rq, 1, good_sectors);
- if (bad_sectors)
- __ide_end_request(drive, rq, 0, bad_sectors);
-}
-
-static int idedisk_prepare_flush(request_queue_t *q, struct request *rq)
-{
- ide_drive_t *drive = q->queuedata;
-
- if (!drive->wcache)
- return 0;
memset(rq->cmd, 0, sizeof(rq->cmd));
rq->cmd[0] = WIN_FLUSH_CACHE;
- rq->flags |= REQ_DRIVE_TASK | REQ_SOFTBARRIER;
+ rq->flags |= REQ_DRIVE_TASK;
rq->buffer = rq->cmd;
- return 1;
}
static int idedisk_issue_flush(request_queue_t *q, struct gendisk *disk,
idedisk_prepare_flush(q, rq);
- ret = blk_execute_rq(q, disk, rq);
+ ret = blk_execute_rq(q, disk, rq, 0);
/*
* if we failed and caller wants error offset, get it
return 0;
}
+static void update_ordered(ide_drive_t *drive)
+{
+ struct hd_driveid *id = drive->id;
+ unsigned ordered = QUEUE_ORDERED_NONE;
+ prepare_flush_fn *prep_fn = NULL;
+ issue_flush_fn *issue_fn = NULL;
+
+ if (drive->wcache) {
+ unsigned long long capacity;
+ int barrier;
+ /*
+ * We must avoid issuing commands a drive does not
+ * understand or we may crash it. We check flush cache
+ * is supported. We also check we have the LBA48 flush
+ * cache if the drive capacity is too large. By this
+ * time we have trimmed the drive capacity if LBA48 is
+ * not available so we don't need to recheck that.
+ */
+ capacity = idedisk_capacity(drive);
+ barrier = ide_id_has_flush_cache(id) &&
+ (drive->addressing == 0 || capacity <= (1ULL << 28) ||
+ ide_id_has_flush_cache_ext(id));
+
+ printk(KERN_INFO "%s: cache flushes %ssupported\n",
+ drive->name, barrier ? "" : "not ");
+
+ if (barrier) {
+ ordered = QUEUE_ORDERED_DRAIN_FLUSH;
+ prep_fn = idedisk_prepare_flush;
+ issue_fn = idedisk_issue_flush;
+ }
+ } else
+ ordered = QUEUE_ORDERED_DRAIN;
+
+ blk_queue_ordered(drive->queue, ordered, prep_fn);
+ blk_queue_issue_flush_fn(drive->queue, issue_fn);
+}
+
static int write_cache(ide_drive_t *drive, int arg)
{
ide_task_t args;
- int err;
-
- if (!ide_id_has_flush_cache(drive->id))
- return 1;
+ int err = 1;
- memset(&args, 0, sizeof(ide_task_t));
- args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ?
+ if (ide_id_has_flush_cache(drive->id)) {
+ memset(&args, 0, sizeof(ide_task_t));
+ args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ?
SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE;
- args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES;
- args.command_type = IDE_DRIVE_TASK_NO_DATA;
- args.handler = &task_no_data_intr;
+ args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES;
+ args.command_type = IDE_DRIVE_TASK_NO_DATA;
+ args.handler = &task_no_data_intr;
+ err = ide_raw_taskfile(drive, &args, NULL);
+ if (err == 0)
+ drive->wcache = arg;
+ }
- err = ide_raw_taskfile(drive, &args, NULL);
- if (err)
- return err;
+ update_ordered(drive);
- drive->wcache = arg;
- return 0;
+ return err;
}
static int do_idedisk_flushcache (ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;
unsigned long long capacity;
- int barrier;
idedisk_add_settings(drive);
if (drive->id_read == 0)
return;
- /*
- * CompactFlash cards and their brethern look just like hard drives
- * to us, but they are removable and don't have a doorlock mechanism.
- */
- if (drive->removable && !(drive->is_flash)) {
+ if (drive->removable) {
/*
* Removable disks (eg. SYQUEST); ignore 'WD' drives
*/
ide_dma_verbose(drive);
printk("\n");
- drive->no_io_32bit = id->dword_io ? 1 : 0;
-
/* write cache enabled? */
if ((id->csfo & 1) || (id->cfs_enable_1 & (1 << 5)))
drive->wcache = 1;
write_cache(drive, 1);
-
- /*
- * We must avoid issuing commands a drive does not understand
- * or we may crash it. We check flush cache is supported. We also
- * check we have the LBA48 flush cache if the drive capacity is
- * too large. By this time we have trimmed the drive capacity if
- * LBA48 is not available so we don't need to recheck that.
- */
- barrier = 0;
- if (ide_id_has_flush_cache(id))
- barrier = 1;
- if (drive->addressing == 1) {
- /* Can't issue the correct flush ? */
- if (capacity > (1ULL << 28) && !ide_id_has_flush_cache_ext(id))
- barrier = 0;
- }
-
- printk(KERN_INFO "%s: cache flushes %ssupported\n",
- drive->name, barrier ? "" : "not ");
- if (barrier) {
- blk_queue_ordered(drive->queue, QUEUE_ORDERED_FLUSH);
- drive->queue->prepare_flush_fn = idedisk_prepare_flush;
- drive->queue->end_flush_fn = idedisk_end_flush;
- blk_queue_issue_flush_fn(drive->queue, idedisk_issue_flush);
- }
}
static void ide_cacheflush_p(ide_drive_t *drive)
printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
}
-static int ide_disk_remove(struct device *dev)
+static void ide_disk_remove(ide_drive_t *drive)
{
- ide_drive_t *drive = to_ide_device(dev);
struct ide_disk_obj *idkp = drive->driver_data;
struct gendisk *g = idkp->disk;
- ide_cacheflush_p(drive);
-
ide_unregister_subdriver(drive, idkp->driver);
del_gendisk(g);
- ide_disk_put(idkp);
+ ide_cacheflush_p(drive);
- return 0;
+ ide_disk_put(idkp);
}
static void ide_disk_release(struct kref *kref)
kfree(idkp);
}
-static int ide_disk_probe(struct device *dev);
+static int ide_disk_probe(ide_drive_t *drive);
-static void ide_device_shutdown(struct device *dev)
+static void ide_device_shutdown(ide_drive_t *drive)
{
- ide_drive_t *drive = container_of(dev, ide_drive_t, gendev);
-
#ifdef CONFIG_ALPHA
/* On Alpha, halt(8) doesn't actually turn the machine off,
it puts you into the sort of firmware monitor. Typically,
}
printk("Shutdown: %s\n", drive->name);
- dev->bus->suspend(dev, PMSG_SUSPEND);
+ drive->gendev.bus->suspend(&drive->gendev, PMSG_SUSPEND);
}
static ide_driver_t idedisk_driver = {
- .owner = THIS_MODULE,
.gen_driver = {
+ .owner = THIS_MODULE,
.name = "ide-disk",
.bus = &ide_bus_type,
- .probe = ide_disk_probe,
- .remove = ide_disk_remove,
- .shutdown = ide_device_shutdown,
},
+ .probe = ide_disk_probe,
+ .remove = ide_disk_remove,
+ .shutdown = ide_device_shutdown,
.version = IDEDISK_VERSION,
.media = ide_disk,
.supports_dsc_overlap = 0,
return 0;
}
+static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+{
+ struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk);
+ ide_drive_t *drive = idkp->drive;
+
+ geo->heads = drive->bios_head;
+ geo->sectors = drive->bios_sect;
+ geo->cylinders = (u16)drive->bios_cyl; /* truncate */
+ return 0;
+}
+
static int idedisk_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
.open = idedisk_open,
.release = idedisk_release,
.ioctl = idedisk_ioctl,
+ .getgeo = idedisk_getgeo,
.media_changed = idedisk_media_changed,
.revalidate_disk= idedisk_revalidate_disk
};
MODULE_DESCRIPTION("ATA DISK Driver");
-static int ide_disk_probe(struct device *dev)
+static int ide_disk_probe(ide_drive_t *drive)
{
- ide_drive_t *drive = to_ide_device(dev);
struct ide_disk_obj *idkp;
struct gendisk *g;
if (drive->media != ide_disk)
goto failed;
- idkp = kmalloc(sizeof(*idkp), GFP_KERNEL);
+ idkp = kzalloc(sizeof(*idkp), GFP_KERNEL);
if (!idkp)
goto failed;
- g = alloc_disk(1 << PARTN_BITS);
+ g = alloc_disk_node(1 << PARTN_BITS,
+ hwif_to_node(drive->hwif));
if (!g)
goto out_free_idkp;
ide_register_subdriver(drive, &idedisk_driver);
- memset(idkp, 0, sizeof(*idkp));
-
kref_init(&idkp->kref);
idkp->drive = drive;
driver_unregister(&idedisk_driver.gen_driver);
}
-static int idedisk_init (void)
+static int __init idedisk_init(void)
{
return driver_register(&idedisk_driver.gen_driver);
}
+MODULE_ALIAS("ide:*m-disk*");
module_init(idedisk_init);
module_exit(idedisk_exit);
MODULE_LICENSE("GPL");
git://git.onelab.eu / linux-2.6.git / blobdiff