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| author | Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> | 2024-05-17 13:43:05 -0700 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2024-05-21 06:33:40 -0700 |
| commit | 9b090d57746d965684f53a1aefcb363bab653ad3 (patch) | |
| tree | ad8781abee094f71595775e1e71d47b1638dd869 /drivers/gpu/drm/xe/xe_lrc.c | |
| parent | bd49e50d81b543e678965118a86958d87c045c73 (diff) | |
| download | lwn-9b090d57746d965684f53a1aefcb363bab653ad3.tar.gz lwn-9b090d57746d965684f53a1aefcb363bab653ad3.zip | |
drm/xe/lrc: Add helper to capture context timestamp
Add a helper to capture CTX_TIMESTAMP from the context image so it can
be used to calculate the runtime.
v2: Add kernel-doc to clarify expectation from caller
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240517204310.88854-4-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_lrc.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_lrc.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_lrc.c b/drivers/gpu/drm/xe/xe_lrc.c index 9b0a4078add3..f679cb9aaea7 100644 --- a/drivers/gpu/drm/xe/xe_lrc.c +++ b/drivers/gpu/drm/xe/xe_lrc.c @@ -844,6 +844,7 @@ int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe, lrc->tile = gt_to_tile(hwe->gt); lrc->ring.size = ring_size; lrc->ring.tail = 0; + lrc->ctx_timestamp = 0; xe_hw_fence_ctx_init(&lrc->fence_ctx, hwe->gt, hwe->fence_irq, hwe->name); @@ -898,6 +899,8 @@ int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe, RING_CTL_SIZE(lrc->ring.size) | RING_VALID); } + xe_lrc_write_ctx_reg(lrc, CTX_TIMESTAMP, 0); + if (xe->info.has_asid && vm) xe_lrc_write_ctx_reg(lrc, PVC_CTX_ASID, vm->usm.asid); @@ -1576,3 +1579,12 @@ void xe_lrc_snapshot_free(struct xe_lrc_snapshot *snapshot) xe_bo_put(snapshot->lrc_bo); kfree(snapshot); } + +u32 xe_lrc_update_timestamp(struct xe_lrc *lrc, u32 *old_ts) +{ + *old_ts = lrc->ctx_timestamp; + + lrc->ctx_timestamp = xe_lrc_read_ctx_reg(lrc, CTX_TIMESTAMP); + + return lrc->ctx_timestamp; +} |