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habanalabs: remove call to cs_parser() 

There is no need to parse the command submission when doing memset
of the device memory using the DMA engine because only the driver calls
the memset function and therefore, the CS is trusted and doesn't require
validation and patching.

Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Dalit Ben Zoor 2019-04-30 15:22:14 +03:00 committed by Oded Gabbay
parent 03d5f641dc
commit 3706b47006
1 changed files with 3 additions and 24 deletions
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27
drivers/misc/habanalabs/goya/goya.c
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@ -4398,7 +4398,6 @@ static int goya_memset_device_memory(struct hl_device *hdev, u64 addr, u32 size,
u64 val, bool is_dram)
{
struct packet_lin_dma *lin_dma_pkt;
struct hl_cs_parser parser;
struct hl_cs_job *job;
u32 cb_size, ctl;
struct hl_cb *cb;
@ -4438,36 +4437,16 @@ static int goya_memset_device_memory(struct hl_device *hdev, u64 addr, u32 size,
job->user_cb->cs_cnt++;
job->user_cb_size = cb_size;
job->hw_queue_id = GOYA_QUEUE_ID_DMA_0;
job->patched_cb = job->user_cb;
job->job_cb_size = job->user_cb_size +
sizeof(struct packet_msg_prot) * 2;
hl_debugfs_add_job(hdev, job);
parser.ctx_id = HL_KERNEL_ASID_ID;
parser.cs_sequence = 0;
parser.job_id = job->id;
parser.hw_queue_id = job->hw_queue_id;
parser.job_userptr_list = &job->userptr_list;
parser.user_cb = job->user_cb;
parser.user_cb_size = job->user_cb_size;
parser.ext_queue = job->ext_queue;
parser.use_virt_addr = hdev->mmu_enable;
rc = hdev->asic_funcs->cs_parser(hdev, &parser);
if (rc) {
dev_err(hdev->dev, "Failed to parse kernel CB\n");
goto free_job;
}
job->patched_cb = parser.patched_cb;
job->job_cb_size = parser.patched_cb_size;
job->patched_cb->cs_cnt++;
rc = goya_send_job_on_qman0(hdev, job);
job->patched_cb->cs_cnt--;
hl_cb_put(job->patched_cb);
free_job:
hl_userptr_delete_list(hdev, &job->userptr_list);
hl_debugfs_remove_job(hdev, job);
kfree(job);
cb->cs_cnt--;