* Add { 0, 0 } entry to {kauai,shasta}_pio_timings[] so kauai_lookup_timing()
always returns a valid PIO timing (fixes PIO timing not being set for devices
with minimum PIO cycle <= 120ns).
* Add setting transfer mode on the device to pmac_ide_set_pio_mode().
* Fix pmac_ide_set_pio() to always program chipset for given PIO timing instead
of only when the device we want to program PIO timing for is the currently
selected one.
* Now that pmac_ide_set_pio() is fixed there is no need to set transfer mode
on the device and program chipset for PIO in pmac_ide_tune_chipset()
(returning 0 == success is not entirely correct but is OK for now since
the upper layers are only checking ->speedproc return value for DMA modes).
v2:
* s/speed/XFER_PIO_0 + pio/ in pmac_ide_set_pio_mode() so it actually compiles.
* Removal of kauai_lookup_timing() return value checking went to separate patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx>
---
replacement patch for the one in IDE quilt tree
drivers/ide/ppc/pmac.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
Index: b/drivers/ide/ppc/pmac.c
===================================================================
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -6,6 +6,7 @@
* for doing DMA.
*
* Copyright (C) 1998-2003 Paul Mackerras & Ben. Herrenschmidt
+ * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -311,7 +312,8 @@ static struct kauai_timing kauai_pio_tim
{ 240 , 0x0800038b },
{ 239 , 0x0800030c },
{ 180 , 0x05000249 },
- { 120 , 0x04000148 }
+ { 120 , 0x04000148 },
+ { 0 , 0 },
};
static struct kauai_timing kauai_mdma_timings[] =
@@ -351,7 +353,8 @@ static struct kauai_timing shasta_pio_ti
{ 240 , 0x040003cd },
{ 239 , 0x040003cd },
{ 180 , 0x0400028b },
- { 120 , 0x0400010a }
+ { 120 , 0x0400010a },
+ { 0 , 0 },
};
static struct kauai_timing shasta_mdma_timings[] =
@@ -695,8 +698,10 @@ pmac_ide_set_pio_mode(ide_drive_t *drive
drive->name, pio, *timings);
#endif
- if (drive->select.all == HWIF(drive)->INB(IDE_SELECT_REG))
- pmac_ide_do_update_timings(drive);
+ if (pmac_ide_do_setfeature(drive, XFER_PIO + pio))
+ return;
+
+ pmac_ide_do_update_timings(drive);
}
#ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
@@ -965,7 +970,7 @@ static int pmac_ide_tune_chipset(ide_dri
case XFER_PIO_1:
case XFER_PIO_0:
pmac_ide_set_pio_mode(drive, speed & 0x07);
- break;
+ return 0;
default:
ret = 1;
}
-
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