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author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-01-25 22:17:17 +0100 |
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committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-01-25 22:17:17 +0100 |
commit | c2b57cdc1d2976444d451a2a2e43e11b61ed0638 (patch) | |
tree | f322e4d494d9688afd319fbe88afd6a526bb0154 /drivers | |
parent | d32444771b154c3ec37ebf6439004653560c2411 (diff) | |
download | op-kernel-dev-c2b57cdc1d2976444d451a2a2e43e11b61ed0638.zip op-kernel-dev-c2b57cdc1d2976444d451a2a2e43e11b61ed0638.tar.gz |
ide: add ide_tf_read() helper
* Factor out code reading taskfile registers from ide_end_drive_cmd()
to the new ide_tf_read() helper.
* Add IDE_TFLAG_IN_* taskfile flags to indicate the need to load
particular IDE taskfile register in ide_tf_read().
* Update ide_end_drive_cmd() to set respective IDE_TFLAG_IN_* taksfile flags.
* Add ide_get_lba_addr() for getting LBA sector address from taskfile struct.
* Factor out code getting sector address from ide_dump_ata_status()
to the new ide_dump_sector() function.
* Convert ide_dump_sector() to use ide_tf_read() and ide_get_lba_addr().
* Remove no longer needed ide_read_24().
The only change in functionality caused by this patch is that
ide_dump_ata_status() no longer prints "high"/"low" parts of LBA48
sector address (of course LBA48 sector address is still printed).
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/ide/ide-io.c | 68 | ||||
-rw-r--r-- | drivers/ide/ide-iops.c | 8 | ||||
-rw-r--r-- | drivers/ide/ide-lib.c | 69 |
3 files changed, 84 insertions, 61 deletions
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 48c38b6..e053e00 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -297,6 +297,48 @@ static void ide_complete_pm_request (ide_drive_t *drive, struct request *rq) spin_unlock_irqrestore(&ide_lock, flags); } +void ide_tf_read(ide_drive_t *drive, ide_task_t *task) +{ + ide_hwif_t *hwif = drive->hwif; + struct ide_taskfile *tf = &task->tf; + + if (task->tf_flags & IDE_TFLAG_IN_DATA) { + u16 data = hwif->INW(IDE_DATA_REG); + + tf->data = data & 0xff; + tf->hob_data = (data >> 8) & 0xff; + } + + /* be sure we're looking at the low order bits */ + hwif->OUTB(drive->ctl & ~0x80, IDE_CONTROL_REG); + + if (task->tf_flags & IDE_TFLAG_IN_NSECT) + tf->nsect = hwif->INB(IDE_NSECTOR_REG); + if (task->tf_flags & IDE_TFLAG_IN_LBAL) + tf->lbal = hwif->INB(IDE_SECTOR_REG); + if (task->tf_flags & IDE_TFLAG_IN_LBAM) + tf->lbam = hwif->INB(IDE_LCYL_REG); + if (task->tf_flags & IDE_TFLAG_IN_LBAH) + tf->lbah = hwif->INB(IDE_HCYL_REG); + if (task->tf_flags & IDE_TFLAG_IN_DEVICE) + tf->device = hwif->INB(IDE_SELECT_REG); + + if (task->tf_flags & IDE_TFLAG_LBA48) { + hwif->OUTB(drive->ctl | 0x80, IDE_CONTROL_REG); + + if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE) + tf->hob_feature = hwif->INB(IDE_FEATURE_REG); + if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT) + tf->hob_nsect = hwif->INB(IDE_NSECTOR_REG); + if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL) + tf->hob_lbal = hwif->INB(IDE_SECTOR_REG); + if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM) + tf->hob_lbam = hwif->INB(IDE_LCYL_REG); + if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH) + tf->hob_lbah = hwif->INB(IDE_HCYL_REG); + } +} + /** * ide_end_drive_cmd - end an explicit drive command * @drive: command @@ -339,30 +381,14 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err) if (args) { struct ide_taskfile *tf = &args->tf; - if (args->tf_flags & IDE_TFLAG_IN_DATA) { - u16 data = hwif->INW(IDE_DATA_REG); - - tf->data = data & 0xff; - tf->hob_data = (data >> 8) & 0xff; - } tf->error = err; - /* be sure we're looking at the low order bits */ - hwif->OUTB(drive->ctl & ~0x80, IDE_CONTROL_REG); - tf->nsect = hwif->INB(IDE_NSECTOR_REG); - tf->lbal = hwif->INB(IDE_SECTOR_REG); - tf->lbam = hwif->INB(IDE_LCYL_REG); - tf->lbah = hwif->INB(IDE_HCYL_REG); - tf->device = hwif->INB(IDE_SELECT_REG); tf->status = stat; - if (args->tf_flags & IDE_TFLAG_LBA48) { - hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG); - tf->hob_feature = hwif->INB(IDE_FEATURE_REG); - tf->hob_nsect = hwif->INB(IDE_NSECTOR_REG); - tf->hob_lbal = hwif->INB(IDE_SECTOR_REG); - tf->hob_lbam = hwif->INB(IDE_LCYL_REG); - tf->hob_lbah = hwif->INB(IDE_HCYL_REG); - } + args->tf_flags |= (IDE_TFLAG_IN_TF|IDE_TFLAG_IN_DEVICE); + if (args->tf_flags & IDE_TFLAG_LBA48) + args->tf_flags |= IDE_TFLAG_IN_HOB; + + ide_tf_read(drive, args); } } else if (blk_pm_request(rq)) { struct request_pm_state *pm = rq->data; diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index 38d6b15..c97c071 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -158,14 +158,6 @@ void default_hwif_mmiops (ide_hwif_t *hwif) EXPORT_SYMBOL(default_hwif_mmiops); -u32 ide_read_24 (ide_drive_t *drive) -{ - u8 sect = HWIF(drive)->INB(IDE_SECTOR_REG); - u8 lcyl = HWIF(drive)->INB(IDE_LCYL_REG); - u8 hcyl = HWIF(drive)->INB(IDE_HCYL_REG); - return (hcyl<<16)|(lcyl<<8)|sect; -} - void SELECT_DRIVE (ide_drive_t *drive) { if (HWIF(drive)->selectproc) diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c index 0010858..15736d4 100644 --- a/drivers/ide/ide-lib.c +++ b/drivers/ide/ide-lib.c @@ -479,6 +479,42 @@ static void ide_dump_opcode(ide_drive_t *drive) printk("0x%02x\n", opcode); } +static u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48) +{ + u32 high, low; + + if (lba48) + high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | + tf->hob_lbal; + else + high = tf->device & 0xf; + low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; + + return ((u64)high << 24) | low; +} + +static void ide_dump_sector(ide_drive_t *drive) +{ + ide_task_t task; + struct ide_taskfile *tf = &task.tf; + int lba48 = (drive->addressing == 1) ? 1 : 0; + + memset(&task, 0, sizeof(task)); + if (lba48) + task.tf_flags = IDE_TFLAG_IN_LBA | IDE_TFLAG_IN_HOB_LBA | + IDE_TFLAG_LBA48; + else + task.tf_flags = IDE_TFLAG_IN_LBA | IDE_TFLAG_IN_DEVICE; + + ide_tf_read(drive, &task); + + if (lba48 || (tf->device & ATA_LBA)) + printk(", LBAsect=%llu", ide_get_lba_addr(tf, lba48)); + else + printk(", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam, + tf->device & 0xf, tf->lbal); +} + static u8 ide_dump_ata_status(ide_drive_t *drive, const char *msg, u8 stat) { ide_hwif_t *hwif = HWIF(drive); @@ -512,38 +548,7 @@ static u8 ide_dump_ata_status(ide_drive_t *drive, const char *msg, u8 stat) printk("}"); if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || (err & (ECC_ERR|ID_ERR|MARK_ERR))) { - if (drive->addressing == 1) { - __u64 sectors = 0; - u32 low = 0, high = 0; - hwif->OUTB(drive->ctl&~0x80, IDE_CONTROL_REG); - low = ide_read_24(drive); - hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG); - high = ide_read_24(drive); - sectors = ((__u64)high << 24) | low; - printk(", LBAsect=%llu, high=%d, low=%d", - (unsigned long long) sectors, - high, low); - } else { - u8 sector, lcyl, hcyl, cur; - - sector = hwif->INB(IDE_SECTOR_REG); - lcyl = hwif->INB(IDE_LCYL_REG); - hcyl = hwif->INB(IDE_HCYL_REG); - cur = hwif->INB(IDE_SELECT_REG); - - if (cur & 0x40) { /* using LBA? */ - printk(", LBAsect=%ld", (unsigned long) - ((cur & 0xf) << 24) | - (hcyl << 16) | - (lcyl << 8) | - sector); - } else { - printk(", CHS=%d/%d/%d", - (hcyl << 8) + lcyl, - cur & 0xf, - sector); - } - } + ide_dump_sector(drive); if (HWGROUP(drive) && HWGROUP(drive)->rq) printk(", sector=%llu", (unsigned long long)HWGROUP(drive)->rq->sector); |