[PATCH 1/2] xe: Allow a GGTT mapped batch to be submitted to user exec queue
Umesh Nerlige Ramappa
umesh.nerlige.ramappa at intel.com
Tue Dec 17 00:58:17 UTC 2024
For a OA use case, one of the HW registers needs to be modified by
submitting an MI_LOAD_REGISTER_IMM command to the users exec queue, so
that the register is modified in the user's hardware context. In order
to do this a batch that is mapped in GGTT, needs to be submitted to the
user exec queue. Since all user submissions use q->vm and hence PPGTT,
add some plumbing to enable submission of batches mapped in GGTT.
v2: ggtt is zero-initialized, so no need to set it false (Matt Brost)
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
Reviewed-by: Matthew Brost <matthew.brost at intel.com>
---
drivers/gpu/drm/xe/xe_ring_ops.c | 5 ++++-
drivers/gpu/drm/xe/xe_sched_job_types.h | 2 ++
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/xe/xe_ring_ops.c b/drivers/gpu/drm/xe/xe_ring_ops.c
index 0be4f489d3e1..9f327f27c072 100644
--- a/drivers/gpu/drm/xe/xe_ring_ops.c
+++ b/drivers/gpu/drm/xe/xe_ring_ops.c
@@ -221,7 +221,10 @@ static int emit_pipe_imm_ggtt(u32 addr, u32 value, bool stall_only, u32 *dw,
static u32 get_ppgtt_flag(struct xe_sched_job *job)
{
- return job->q->vm ? BIT(8) : 0;
+ if (job->q->vm && !job->ggtt)
+ return BIT(8);
+
+ return 0;
}
static int emit_copy_timestamp(struct xe_lrc *lrc, u32 *dw, int i)
diff --git a/drivers/gpu/drm/xe/xe_sched_job_types.h b/drivers/gpu/drm/xe/xe_sched_job_types.h
index f13f333f00be..d942b20a9f29 100644
--- a/drivers/gpu/drm/xe/xe_sched_job_types.h
+++ b/drivers/gpu/drm/xe/xe_sched_job_types.h
@@ -56,6 +56,8 @@ struct xe_sched_job {
u32 migrate_flush_flags;
/** @ring_ops_flush_tlb: The ring ops need to flush TLB before payload. */
bool ring_ops_flush_tlb;
+ /** @ggtt: mapped in ggtt. */
+ bool ggtt;
/** @ptrs: per instance pointers. */
struct xe_job_ptrs ptrs[];
};
--
2.34.1
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