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 a1d24cd1293ece30595e5be7602b832758102fd5..313194a0f36e0b505809519cc64d2baab531dd6b 100644 (file)
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -535,7 +535,7 @@ pmac_outbsync(ide_drive_t *drive, u8 value, unsigned long port)
 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 @@ pmac_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
                
        /* 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 @@ pmac_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
        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 @@ pmac_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
                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 @@ pmac_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
                        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 @@ pmac_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
        if (ide_config_drive_speed(drive, XFER_PIO_0 + pio))
                return;
 
+       *timings = t;
        pmac_ide_do_update_timings(drive);
 }
 
@@ -1143,6 +1145,8 @@ pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
        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;