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-rw-r--r--sys/dev/ata/ata-chipset.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/dev/ata/ata-chipset.c b/sys/dev/ata/ata-chipset.c
index 00e97f9..bf27fcc 100644
--- a/sys/dev/ata/ata-chipset.c
+++ b/sys/dev/ata/ata-chipset.c
@@ -508,8 +508,10 @@ ata_cyrix_setmode(struct ata_device *atadev, int mode)
u_int32_t udmatiming[] = { 0x00921250, 0x00911140, 0x00911030 };
int error;
- mode = ata_limit_mode(atadev, mode, ATA_UDMA2);
atadev->channel->dma->alignment = 16;
+ atadev->channel->dma->max_iosize = 63 * 1024;
+
+ mode = ata_limit_mode(atadev, mode, ATA_UDMA2);
error = ata_controlcmd(atadev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode);
@@ -955,7 +957,7 @@ ata_national_setmode(struct ata_device *atadev, int mode)
u_int32_t udmatiming[] = { 0x80921250, 0x80911140, 0x80911030 };
int error;
- atadev->channel->dma->alignment = 4;
+ atadev->channel->dma->alignment = 16;
atadev->channel->dma->max_iosize = 63 * 1024;
mode = ata_limit_mode(atadev, mode, ATA_UDMA2);
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