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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-07-09 23:17:58 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-07-09 23:17:58 +0200
commit49521f97ccd3c2bf6e71a91cea8fe65d170fa4fb (patch)
treef61c34da6092f2f1a97a78da567afc59ad40850b /drivers/ide/ppc
parent75b1d97535327d0428c6bffd9d5407e65546fd5d (diff)
ide: add short cables support
This patch allows users to override both host and device side cable detection with "ideX=ata66" kernel parameter. Thanks to this it should be now possible to use UDMA > 2 modes on systems (laptops mainly) which use short 40-pin cable instead of 80-pin one. Next patches add automatic detection of some systems using short cables. Changes: * Rename hwif->udma_four to hwif->cbl and make it u8. * Convert all existing users accordingly (use ATA_CBL_* defines while at it). * Add ATA_CBL_PATA40_SHORT support to ide-iops.c:eighty_ninty_three(). * Use ATA_CBL_PATA40_SHORT for "ideX=ata66" kernel parameter. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Diffstat (limited to 'drivers/ide/ppc')
-rw-r--r--drivers/ide/ppc/pmac.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 5e307740945..e46f4720654 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -942,8 +942,8 @@ pmac_ide_tune_chipset (ide_drive_t *drive, byte speed)
return 1;
case XFER_UDMA_4:
case XFER_UDMA_3:
- if (HWIF(drive)->udma_four == 0)
- return 1;
+ if (drive->hwif->cbl != ATA_CBL_PATA80)
+ return 1;
case XFER_UDMA_2:
case XFER_UDMA_1:
case XFER_UDMA_0:
@@ -1244,7 +1244,7 @@ pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
hwif->chipset = ide_pmac;
hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET] || pmif->mediabay;
hwif->hold = pmif->mediabay;
- hwif->udma_four = pmif->cable_80;
+ hwif->cbl = pmif->cable_80 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
hwif->drives[0].unmask = 1;
hwif->drives[1].unmask = 1;
hwif->tuneproc = pmac_ide_tuneproc;