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authorAlbert Lee <albertcc@tw.ibm.com>2007-03-26 23:03:19 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-03-26 23:03:19 +0200
commit362ebd83adb4ff2761b6f49a3570f501c3c7e467 (patch)
treee2c9b4b4b73c4e70f2023fa7c81236a064b9748b /drivers/ide/pci
parentb43c5f3dbe0c93dc205a7c69f892b94b7037d862 (diff)
pdc202xx_new: Enable ATAPI DMA
[ bart: the ressurection of 2 years old patch which slipped thru the cracks (thanks to Sergei Shtylyov for finding it) ] These is the patch to turn on pdc202xx_new for ATAPI DMA. When testing, it works fine without the (request_bufflen % 256) workaround as needed in libata. ide-scsi filters out (pc->request_transfer % 1024) and use PIO, so the pdc202xx ATAPI DMA problem is avoid. Both ide-cd and ide-scsi won't hit the ATAPI DMA problem on pdc202xx_new. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci')
-rw-r--r--drivers/ide/pci/pdc202xx_new.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 6ceb25bc5a7..ace98929cc3 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -255,7 +255,7 @@ static int config_chipset_for_dma(ide_drive_t *drive)
printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
}
- if (drive->media != ide_disk)
+ if (drive->media != ide_disk && drive->media != ide_cdrom)
return 0;
if (id->capability & 4) {
@@ -545,6 +545,7 @@ static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
+ hwif->atapi_dma = 1;
hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;