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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 22:17:17 +0100
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 22:17:17 +0100
commitc2b57cdc1d2976444d451a2a2e43e11b61ed0638 (patch)
treef322e4d494d9688afd319fbe88afd6a526bb0154 /drivers/ide/ide-lib.c
parentd32444771b154c3ec37ebf6439004653560c2411 (diff)
downloadop-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/ide/ide-lib.c')
-rw-r--r--drivers/ide/ide-lib.c69
1 files changed, 37 insertions, 32 deletions
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);
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