ide-pmac: fix PIO setup and enable autotune
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index a1d24cd..313194a 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -535,7 +535,7 @@
static void
pmac_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
- u32 *timings;
+ u32 *timings, t;
unsigned accessTicks, recTicks;
unsigned accessTime, recTime;
pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
@@ -546,6 +546,7 @@
/* which drive is it ? */
timings = &pmif->timings[drive->select.b.unit & 0x01];
+ t = *timings;
cycle_time = ide_pio_cycle_time(drive, pio);
@@ -553,14 +554,14 @@
case controller_sh_ata6: {
/* 133Mhz cell */
u32 tr = kauai_lookup_timing(shasta_pio_timings, cycle_time);
- *timings = ((*timings) & ~TR_133_PIOREG_PIO_MASK) | tr;
+ t = (t & ~TR_133_PIOREG_PIO_MASK) | tr;
break;
}
case controller_un_ata6:
case controller_k2_ata6: {
/* 100Mhz cell */
u32 tr = kauai_lookup_timing(kauai_pio_timings, cycle_time);
- *timings = ((*timings) & ~TR_100_PIOREG_PIO_MASK) | tr;
+ t = (t & ~TR_100_PIOREG_PIO_MASK) | tr;
break;
}
case controller_kl_ata4:
@@ -574,9 +575,9 @@
accessTicks = min(accessTicks, 0x1fU);
recTicks = SYSCLK_TICKS_66(recTime);
recTicks = min(recTicks, 0x1fU);
- *timings = ((*timings) & ~TR_66_PIO_MASK) |
- (accessTicks << TR_66_PIO_ACCESS_SHIFT) |
- (recTicks << TR_66_PIO_RECOVERY_SHIFT);
+ t = (t & ~TR_66_PIO_MASK) |
+ (accessTicks << TR_66_PIO_ACCESS_SHIFT) |
+ (recTicks << TR_66_PIO_RECOVERY_SHIFT);
break;
default: {
/* 33Mhz cell */
@@ -596,11 +597,11 @@
recTicks--; /* guess, but it's only for PIO0, so... */
ebit = 1;
}
- *timings = ((*timings) & ~TR_33_PIO_MASK) |
+ t = (t & ~TR_33_PIO_MASK) |
(accessTicks << TR_33_PIO_ACCESS_SHIFT) |
(recTicks << TR_33_PIO_RECOVERY_SHIFT);
if (ebit)
- *timings |= TR_33_PIO_E;
+ t |= TR_33_PIO_E;
break;
}
}
@@ -613,6 +614,7 @@
if (ide_config_drive_speed(drive, XFER_PIO_0 + pio))
return;
+ *timings = t;
pmac_ide_do_update_timings(drive);
}
@@ -1143,6 +1145,8 @@
hwif->cbl = pmif->cable_80 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
hwif->drives[0].unmask = 1;
hwif->drives[1].unmask = 1;
+ hwif->drives[0].autotune = IDE_TUNE_AUTO;
+ hwif->drives[1].autotune = IDE_TUNE_AUTO;
hwif->host_flags = IDE_HFLAG_SET_PIO_MODE_KEEP_DMA;
hwif->pio_mask = ATA_PIO4;
hwif->set_pio_mode = pmac_ide_set_pio_mode;