5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nithin Dabilpuram <ndabilpuram@xxxxxxxxxxx>
[ Upstream commit bc35e28af7890085dcbe5cc32373647dfb4d9af9 ]
Replace slot id with global CPT lf id on reg read/write as
CPTPF/VF driver would send slot number instead of global
lf id in the reg offset. And also update the mailbox response
with the global lf's register offset.
Fixes: ae454086e3c2 ("octeontx2-af: add mailbox interface for CPT")
Signed-off-by: Nithin Dabilpuram <ndabilpuram@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
.../ethernet/marvell/octeontx2/af/rvu_cpt.c | 23 +++++++++++++------
1 file changed, 16 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index 4895faa667b50..767c975ef7f38 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -260,7 +260,8 @@ int rvu_mbox_handler_cpt_rd_wr_register(struct rvu *rvu,
struct cpt_rd_wr_reg_msg *req,
struct cpt_rd_wr_reg_msg *rsp)
{
- int blkaddr;
+ u64 offset = req->reg_offset;
+ int blkaddr, lf;
blkaddr = validate_and_get_cpt_blkaddr(req->blkaddr);
if (blkaddr < 0)
@@ -271,17 +272,25 @@ int rvu_mbox_handler_cpt_rd_wr_register(struct rvu *rvu,
!is_cpt_vf(rvu, req->hdr.pcifunc))
return CPT_AF_ERR_ACCESS_DENIED;
- rsp->reg_offset = req->reg_offset;
- rsp->ret_val = req->ret_val;
- rsp->is_write = req->is_write;
-
if (!is_valid_offset(rvu, req))
return CPT_AF_ERR_ACCESS_DENIED;
+ /* Translate local LF used by VFs to global CPT LF */
+ lf = rvu_get_lf(rvu, &rvu->hw->block[blkaddr], req->hdr.pcifunc,
+ (offset & 0xFFF) >> 3);
+
+ /* Translate local LF's offset to global CPT LF's offset */
+ offset &= 0xFF000;
+ offset += lf << 3;
+
+ rsp->reg_offset = offset;
+ rsp->ret_val = req->ret_val;
+ rsp->is_write = req->is_write;
+
if (req->is_write)
- rvu_write64(rvu, blkaddr, req->reg_offset, req->val);
+ rvu_write64(rvu, blkaddr, offset, req->val);
else
- rsp->val = rvu_read64(rvu, blkaddr, req->reg_offset);
+ rsp->val = rvu_read64(rvu, blkaddr, offset);
return 0;
}
--
2.43.0
