Hello.
Bartlomiej Zolnierkiewicz wrote:
Add ide_pio_need_iordy() helper and convert host drivers to use it.
This fixes it8172, it8213, pdc202xx_old, piix, slc90e66 and siimage
host drivers to handle IORDY correctly.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
[...]
Index: b/drivers/ide/ide-xfer-mode.c
===================================================================
--- a/drivers/ide/ide-xfer-mode.c
+++ b/drivers/ide/ide-xfer-mode.c
@@ -107,6 +107,12 @@ u8 ide_get_best_pio_mode(ide_drive_t *dr
}
EXPORT_SYMBOL_GPL(ide_get_best_pio_mode);
+int ide_pio_need_iordy(ide_drive_t *drive, const u8 pio)
+{
+ return ata_id_pio_need_iordy(drive->id, pio);
+}
+EXPORT_SYMBOL_GPL(ide_pio_need_iordy);
Hm, why there was a need for such a wrapper? Why not just call it
directly?
Index: b/drivers/ide/it8213.c
===================================================================
--- a/drivers/ide/it8213.c
+++ b/drivers/ide/it8213.c
@@ -50,7 +50,7 @@ static void it8213_set_pio_mode(ide_driv
control |= 1; /* Programmable timing on */
if (drive->media != ide_disk)
control |= 4; /* ATAPI */
- if (pio > 2)
+ if (ide_pio_need_iordy(drive, pio))
control |= 2; /* IORDY */
if (is_slave) {
master_data |= 0x4000;
Index: b/drivers/ide/pdc202xx_old.c
===================================================================
--- a/drivers/ide/pdc202xx_old.c
+++ b/drivers/ide/pdc202xx_old.c
@@ -73,7 +73,7 @@ static void pdc202xx_set_mode(ide_drive_
* Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
*/
AP &= ~0x3f;
- if (ata_id_iordy_disable(drive->id))
Hm, now that was surely wrong...
+ if (ide_pio_need_iordy(drive, speed - XFER_PIO_0))
AP |= 0x20; /* set IORDY_EN bit */
if (drive->media == ide_disk)
AP |= 0x10; /* set Prefetch_EN bit */
[...]
MBR, Sergei
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