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ide: use ide_tf_load() in execute_drive_cmd() 

* Add IDE_TFLAG_OUT_DEVICE taskfile flag to indicate the need of writing
  the Device register and handle it in ide_tf_load().

  Update ide_tf_load() and {do_rw,flagged}_taskfile() users accordingly.

* Use struct ide_taskfile and ide_tf_load() in execute_drive_cmd().

* Make the debugging code dump all taskfile registers for both
  REQ_ATA_TYPE_{CMD,TASK} requests and move it to ide_tf_load()
  so it also covers REQ_ATA_TYPE_TASKFILE requests.

There should be no functionality changes caused by this patch
(unless DEBUG is defined).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
hifive-unleashed-5.1
Bartlomiej Zolnierkiewicz 2008-01-25 22:17:10 +01:00
parent 54688aa372
commit 807e35d695
4 changed files with 36 additions and 37 deletions
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2
drivers/ide/ide-disk.c
View File

@ -159,7 +159,7 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
memset(&task, 0, sizeof(task));
task.tf_flags = IDE_TFLAG_NO_SELECT_MASK; /* FIXME? */
task.tf_flags |= IDE_TFLAG_OUT_TF;
task.tf_flags |= (IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE);
if (drive->select.b.lba) {
if (lba48) {

60
drivers/ide/ide-io.c
View File

@ -232,7 +232,7 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
return ide_stopped;
out_do_tf:
args->tf_flags = IDE_TFLAG_OUT_TF;
args->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
if (drive->addressing == 1)
args->tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
args->command_type = IDE_DRIVE_TASK_NO_DATA;
@ -710,7 +710,7 @@ static ide_startstop_t ide_disk_special(ide_drive_t *drive)
return ide_stopped;
}
args.tf_flags = IDE_TFLAG_OUT_TF;
args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
if (drive->addressing == 1)
args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
@ -849,6 +849,8 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
{
ide_hwif_t *hwif = HWIF(drive);
u8 *args = rq->buffer;
ide_task_t ltask;
struct ide_taskfile *tf = &ltask.tf;
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *task = rq->special;
@ -869,6 +871,8 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
break;
}
task->tf_flags |= IDE_TFLAG_OUT_DEVICE;
if (task->tf_flags & IDE_TFLAG_FLAGGED)
return flagged_taskfile(drive, task);
@ -882,46 +886,32 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
if (args == NULL)
goto done;
if (IDE_CONTROL_REG)
hwif->OUTB(drive->ctl, IDE_CONTROL_REG); /* clear nIEN */
SELECT_MASK(drive, 0);
memset(&ltask, 0, sizeof(ltask));
if (rq->cmd_type == REQ_TYPE_ATA_TASK) {
#ifdef DEBUG
printk("%s: DRIVE_TASK_CMD ", drive->name);
printk("cmd=0x%02x ", args[0]);
printk("fr=0x%02x ", args[1]);
printk("ns=0x%02x ", args[2]);
printk("sc=0x%02x ", args[3]);
printk("lcyl=0x%02x ", args[4]);
printk("hcyl=0x%02x ", args[5]);
printk("sel=0x%02x\n", args[6]);
printk("%s: DRIVE_TASK_CMD\n", drive->name);
#endif
hwif->OUTB(args[1], IDE_FEATURE_REG);
hwif->OUTB(args[2], IDE_NSECTOR_REG);
hwif->OUTB(args[3], IDE_SECTOR_REG);
hwif->OUTB(args[4], IDE_LCYL_REG);
hwif->OUTB(args[5], IDE_HCYL_REG);
hwif->OUTB((args[6] & 0xEF)|drive->select.all, IDE_SELECT_REG);
memcpy(&ltask.tf_array[7], &args[1], 6);
ltask.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
} else { /* rq->cmd_type == REQ_TYPE_ATA_CMD */
#ifdef DEBUG
printk("%s: DRIVE_CMD ", drive->name);
printk("cmd=0x%02x ", args[0]);
printk("sc=0x%02x ", args[1]);
printk("fr=0x%02x ", args[2]);
printk("xx=0x%02x\n", args[3]);
printk("%s: DRIVE_CMD\n", drive->name);
#endif
hwif->OUTB(args[2], IDE_FEATURE_REG);
if (args[0] == WIN_SMART) {
hwif->OUTB(args[3],IDE_NSECTOR_REG);
hwif->OUTB(args[1],IDE_SECTOR_REG);
hwif->OUTB(0x4f, IDE_LCYL_REG);
hwif->OUTB(0xc2, IDE_HCYL_REG);
} else
hwif->OUTB(args[1], IDE_NSECTOR_REG);
tf->feature = args[2];
if (args[0] == WIN_SMART) {
tf->nsect = args[3];
tf->lbal = args[1];
tf->lbam = 0x4f;
tf->lbah = 0xc2;
ltask.tf_flags = IDE_TFLAG_OUT_TF;
} else {
tf->nsect = args[1];
ltask.tf_flags = IDE_TFLAG_OUT_FEATURE |
IDE_TFLAG_OUT_NSECT;
}
}
tf->command = args[0];
ide_tf_load(drive, &ltask);
ide_execute_command(drive, args[0], &drive_cmd_intr, WAIT_CMD, NULL);
return ide_started;

10
drivers/ide/ide-taskfile.c
View File

@ -72,6 +72,13 @@ void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
if (task->tf_flags & IDE_TFLAG_FLAGGED)
HIHI = 0xFF;
#ifdef DEBUG
printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
"lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
drive->name, tf->feature, tf->nsect, tf->lbal,
tf->lbam, tf->lbah, tf->device, tf->command);
#endif
if (IDE_CONTROL_REG)
hwif->OUTB(drive->ctl, IDE_CONTROL_REG); /* clear nIEN */
@ -103,7 +110,8 @@ void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
hwif->OUTB(tf->lbah, IDE_HCYL_REG);
hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG);
if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG);
}
EXPORT_SYMBOL_GPL(ide_tf_load);

1
include/linux/ide.h
View File

@ -1066,6 +1066,7 @@ enum {
IDE_TFLAG_OUT_LBAL |
IDE_TFLAG_OUT_LBAM |
IDE_TFLAG_OUT_LBAH,
IDE_TFLAG_OUT_DEVICE = (1 << 14),
};
struct ide_taskfile {