lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ide: add ide_tf_read() helper

Browse Source 
* 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>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2008-01-25 22:17:17 +01:00
parent d32444771b
commit c2b57cdc1d
4 changed files with 106 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
drivers/ide/ide-lib.c
View File

@ -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);