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accel/qaic: Fix the for loop used to walk SG table 

[ Upstream commit c5e8e93897b7bb0a336bf3332f82f8d9f2b33f14 ]

Only for_each_sgtable_dma_sg() should be used to walk through a SG table
to grab correct bus address and length pair after calling DMA MAP API on
a SG table as DMA MAP APIs updates the SG table and for_each_sgtable_sg()
walks through the original SG table.

Fixes: ff13be8303 ("accel/qaic: Add datapath")
Fixes: 129776ac2e ("accel/qaic: Add control path")
Signed-off-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241004193252.3888544-1-quic_jhugo@quicinc.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Pranjal Ramajor Asha Kanojiya 2024-10-04 13:32:52 -06:00 committed by Greg Kroah-Hartman
parent 5032bf57ab
commit 1931dc14b5
2 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/accel/qaic/qaic_control.c
View File

@ -496,7 +496,7 @@ static int encode_addr_size_pairs(struct dma_xfer *xfer, struct wrapper_list *wr
nents = sgt->nents;
nents_dma = nents;
*size = QAIC_MANAGE_EXT_MSG_LENGTH - msg_hdr_len - sizeof(**out_trans);
for_each_sgtable_sg(sgt, sg, i) {
for_each_sgtable_dma_sg(sgt, sg, i) {
*size -= sizeof(*asp);
/* Save 1K for possible follow-up transactions. */
if (*size < SZ_1K) {

6
drivers/accel/qaic/qaic_data.c
View File

@ -177,7 +177,7 @@ static int clone_range_of_sgt_for_slice(struct qaic_device *qdev, struct sg_tabl
nents = 0;
size = size ? size : PAGE_SIZE;
for (sg = sgt_in->sgl; sg; sg = sg_next(sg)) {
for_each_sgtable_dma_sg(sgt_in, sg, j) {
len = sg_dma_len(sg);
if (!len)
@ -214,7 +214,7 @@ static int clone_range_of_sgt_for_slice(struct qaic_device *qdev, struct sg_tabl
/* copy relevant sg node and fix page and length */
sgn = sgf;
for_each_sgtable_sg(sgt, sg, j) {
for_each_sgtable_dma_sg(sgt, sg, j) {
memcpy(sg, sgn, sizeof(*sg));
if (sgn == sgf) {
sg_dma_address(sg) += offf;
@ -294,7 +294,7 @@ static int encode_reqs(struct qaic_device *qdev, struct bo_slice *slice,
* fence.
*/
dev_addr = req->dev_addr;
for_each_sgtable_sg(slice->sgt, sg, i) {
for_each_sgtable_dma_sg(slice->sgt, sg, i) {
slice->reqs[i].cmd = cmd;
slice->reqs[i].src_addr = cpu_to_le64(slice->dir == DMA_TO_DEVICE ?
sg_dma_address(sg) : dev_addr);