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authorSonic Zhang <sonic.zhang@analog.com>2008-05-12 04:12:16 (GMT)
committerJeff Garzik <jgarzik@redhat.com>2008-05-19 21:27:29 (GMT)
commitb6e7b447975b0364c3430284c7b16e2e89ccf9e9 (patch)
treecc81387d1e284c3a5f0b4df09363cbcce209ed76
parent860da5e578c25d1ab4528c0d1ad13f9969e3490f (diff)
downloadlinux-b6e7b447975b0364c3430284c7b16e2e89ccf9e9.tar.xz
pata-bf54x: Set ATAPI HSM to control IDE device terminate sequence.
Set ATAPI host state machine to control IDE device terminate sequence. Some IDE harddisk may assert terminate sequence in the middle of a formal DMA transaction and resume later. Bit DETECT_TERM in ATAPI_CTRL register determines whether the ATAPI host state machine or the kernel driver should take care of this case. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
-rw-r--r--drivers/ata/pata_bf54x.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c
index 9ab8973..5551610 100644
--- a/drivers/ata/pata_bf54x.c
+++ b/drivers/ata/pata_bf54x.c
@@ -911,7 +911,10 @@ static void bfin_bmdma_start(struct ata_queued_cmd *qc)
/* Reset all transfer count */
ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | TFRCNT_RST);
- /* Set transfer length to buffer len */
+ /* Set ATAPI state machine contorl in terminate sequence */
+ ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | END_ON_TERM);
+
+ /* Set transfer length to buffer len */
for_each_sg(qc->sg, sg, qc->n_elem, si) {
ATAPI_SET_XFER_LEN(base, (sg_dma_len(sg) >> 1));
}