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authorSonic Zhang <sonic.zhang@analog.com>2008-05-12 12:12:16 +0800
committerJeff Garzik <jgarzik@redhat.com>2008-05-19 17:27:29 -0400
commitb6e7b447975b0364c3430284c7b16e2e89ccf9e9 (patch)
treecc81387d1e284c3a5f0b4df09363cbcce209ed76 /drivers
parent860da5e578c25d1ab4528c0d1ad13f9969e3490f (diff)
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>
Diffstat (limited to 'drivers')
-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 9ab89732cf9..55516103626 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));
}