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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-01-04 03:08:49 +0300
committerJeff Garzik <jeff@garzik.org>2008-01-11 00:52:53 +0300
commit36906d9beab941452cad406cc03f05cc78671256 (patch)
tree7cda44d878ad68e3cf965c5ac47316a409117be6
parent277d72a37431d200727189693b14488368b7c258 (diff)
downloadlinux-36906d9beab941452cad406cc03f05cc78671256.tar.xz
pata_pdc202xx_old: Further fixups
Turns out distros always enabled burst mode and it is pretty essential so do the same. Also sort out the post DMA mode restore properly. My 20263 card now seems happy but needs some four drive tests done yet (when I've persuaded the kernel not to hang in the edd boot code if I plug them in ..) Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/ata/pata_pdc202xx_old.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/ata/pata_pdc202xx_old.c b/drivers/ata/pata_pdc202xx_old.c
index bc7c2d5d8d5e..8f2815601791 100644
--- a/drivers/ata/pata_pdc202xx_old.c
+++ b/drivers/ata/pata_pdc202xx_old.c
@@ -215,8 +215,8 @@ static void pdc2026x_bmdma_stop(struct ata_queued_cmd *qc)
/* Flip back to 33Mhz for PIO */
if (adev->dma_mode >= XFER_UDMA_2)
iowrite8(ioread8(clock) & ~sel66, clock);
-
ata_bmdma_stop(qc);
+ pdc202xx_set_piomode(ap, adev);
}
/**
@@ -233,6 +233,17 @@ static void pdc2026x_dev_config(struct ata_device *adev)
adev->max_sectors = 256;
}
+static int pdc2026x_port_start(struct ata_port *ap)
+{
+ void __iomem *bmdma = ap->ioaddr.bmdma_addr;
+ if (bmdma) {
+ /* Enable burst mode */
+ u8 burst = ioread8(bmdma + 0x1f);
+ iowrite8(burst | 0x01, bmdma + 0x1f);
+ }
+ return ata_sff_port_start(ap);
+}
+
static struct scsi_host_template pdc202xx_sht = {
.module = THIS_MODULE,
.name = DRV_NAME,
@@ -313,7 +324,7 @@ static struct ata_port_operations pdc2026x_port_ops = {
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
- .port_start = ata_sff_port_start,
+ .port_start = pdc2026x_port_start,
};
static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)