Commit 61ab485f authored by Andrzej Kacprowski's avatar Andrzej Kacprowski Committed by Stanislaw Gruszka
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accel/ivpu: Add support for VPU_JOB_FLAGS_NULL_SUBMISSION_MASK 



Add test_mode = 3 that add VPU_JOB_FLAGS_NULL_SUBMISSION_MASK
flag to the job send to the VPU device. Then the VPU will process
the job but won't execute commands (except the command to signal
the fence).

This can be used to estimate job processing overhead in the host
software and VPU firmware.

Unlike the null hardware mode, the null submission mode will
still work even if UMD uses VPU fences to track job completion.

Signed-off-by: default avatarAndrzej Kacprowski <andrzej.kacprowski@linux.intel.com>
Reviewed-by: default avatarStanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: default avatarJeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: default avatarStanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231028133415.1169975-6-stanislaw.gruszka@linux.intel.com
parent bacc130d

drivers/accel/ivpu/ivpu_drv.c

+1 −1
Original line number Diff line number Diff line
@@ -39,7 +39,7 @@ MODULE_PARM_DESC(dbg_mask, "Driver debug mask. See IVPU_DBG_* macros."); 


int ivpu_test_mode;

module_param_named_unsafe(test_mode, ivpu_test_mode, int, 0644);

MODULE_PARM_DESC(test_mode, "Test mode: 0 - normal operation, 1 - fw unit test, 2 - null hw");

MODULE_PARM_DESC(test_mode, "Test mode: 0 - disabled , 1 - fw unit test, 2 - null hw, 3 - null submission");



u8 ivpu_pll_min_ratio;

module_param_named(pll_min_ratio, ivpu_pll_min_ratio, byte, 0644);

drivers/accel/ivpu/ivpu_drv.h

+4 −3
Original line number Diff line number Diff line
@@ -150,6 +150,7 @@ extern bool ivpu_disable_mmu_cont_pages; 
#define IVPU_TEST_MODE_DISABLED        0

#define IVPU_TEST_MODE_FW_TEST         1

#define IVPU_TEST_MODE_NULL_HW         2

#define IVPU_TEST_MODE_NULL_SUBMISSION 3

extern int ivpu_test_mode;



struct ivpu_file_priv *ivpu_file_priv_get(struct ivpu_file_priv *file_priv);

drivers/accel/ivpu/ivpu_job.c

+2 −0
Original line number Diff line number Diff line
@@ -196,6 +196,8 @@ static int ivpu_cmdq_push_job(struct ivpu_cmdq *cmdq, struct ivpu_job *job) 
	entry->batch_buf_addr = job->cmd_buf_vpu_addr;

	entry->job_id = job->job_id;

	entry->flags = 0;

	if (unlikely(ivpu_test_mode == IVPU_TEST_MODE_NULL_SUBMISSION))

		entry->flags = VPU_JOB_FLAGS_NULL_SUBMISSION_MASK;

	wmb(); /* Ensure that tail is updated after filling entry */

	header->tail = next_entry;

	wmb(); /* Flush WC buffer for jobq header */