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habanalabs/gaudi: support CS with no completion 

As part of the staged submission feature, we need Gaudi to support
command submissions that will never get a completion.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Ofir Bitton 2020-12-03 16:59:28 +02:00 committed by Oded Gabbay
parent 8e39e75a13
commit ac6fdbfe2e
3 changed files with 10 additions and 3 deletions
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1
drivers/misc/habanalabs/common/command_submission.c
View File

@ -225,6 +225,7 @@ static int cs_parser(struct hl_fpriv *hpriv, struct hl_cs_job *job)
parser.queue_type = job->queue_type;
parser.is_kernel_allocated_cb = job->is_kernel_allocated_cb;
job->patched_cb = NULL;
parser.completion = true;
rc = hdev->asic_funcs->cs_parser(hdev, &parser);

2
drivers/misc/habanalabs/common/habanalabs.h
View File

@ -1223,6 +1223,7 @@ struct hl_cs_job {
* MSG_PROT packets. Relevant only for GAUDI as GOYA doesn't
* have streams so the engine can't be busy by another
* stream.
* @completion: true if we need completion for this CS.
*/
struct hl_cs_parser {
struct hl_cb *user_cb;
@ -1237,6 +1238,7 @@ struct hl_cs_parser {
u8 job_id;
u8 is_kernel_allocated_cb;
u8 contains_dma_pkt;
u8 completion;
};
/*

10
drivers/misc/habanalabs/gaudi/gaudi.c
View File

@ -5060,7 +5060,8 @@ static int gaudi_validate_cb(struct hl_device *hdev,
* 1. A packet that will act as a completion packet
* 2. A packet that will generate MSI-X interrupt
*/
parser->patched_cb_size += sizeof(struct packet_msg_prot) * 2;
if (parser->completion)
parser->patched_cb_size += sizeof(struct packet_msg_prot) * 2;
return rc;
}
@ -5287,8 +5288,11 @@ static int gaudi_parse_cb_mmu(struct hl_device *hdev,
* 1. A packet that will act as a completion packet
* 2. A packet that will generate MSI interrupt
*/
parser->patched_cb_size = parser->user_cb_size +
sizeof(struct packet_msg_prot) * 2;
if (parser->completion)
parser->patched_cb_size = parser->user_cb_size +
sizeof(struct packet_msg_prot) * 2;
else
parser->patched_cb_size = parser->user_cb_size;
rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, hdev->kernel_ctx,
parser->patched_cb_size, false, false,