openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

habanalabs: block WREG_BULK packet on PDMA 

WREG_BULK is a special packet that has a variable length. Therefore, we
can't parse it when validating CBs that go to the PCI DMA queue. In case
the user needs to use it, it can put multiple WREG32 packets instead.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
This commit is contained in:
Oded Gabbay 2020-07-03 19:28:54 +03:00
parent 897c44f0ba
commit 2edc66e22b
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/misc/habanalabs/gaudi/gaudi.c
View File

@ -3865,6 +3865,12 @@ static int gaudi_validate_cb(struct hl_device *hdev,
rc = -EPERM;
break;
case PACKET_WREG_BULK:
dev_err(hdev->dev,
"User not allowed to use WREG_BULK\n");
rc = -EPERM;
break;
case PACKET_LOAD_AND_EXE:
rc = gaudi_validate_load_and_exe_pkt(hdev, parser,
(struct packet_load_and_exe *) user_pkt);
@ -3880,7 +3886,6 @@ static int gaudi_validate_cb(struct hl_device *hdev,
break;
case PACKET_WREG_32:
case PACKET_WREG_BULK:
case PACKET_MSG_LONG:
case PACKET_MSG_SHORT:
case PACKET_REPEAT: