Am 29.03.23 um 17:25 schrieb Alex Deucher:
From: Christian König <christian.koenig@xxxxxxx>
Add support for submitting the shadow update packet
when submitting an IB. Needed for MCBP on GFX11.
v2: update API for CSA (Alex)
v3: fix ordering; SET_Q_PREEMPTION_MODE most come before COND_EXEC
Add missing check for AMDGPU_CHUNK_ID_CP_GFX_SHADOW in
amdgpu_cs_pass1()
Only initialize shadow on first use
(Alex)
v4: Pass parameters rather than job to new ring callback (Alex)
v5: squash in change to call SET_Q_PREEMPTION_MODE/COND_EXEC
before RELEASE_MEM to complete the UMDs use of the shadow (Alex)
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 26 +++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 29 +++++++++++++++++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.h | 6 +++++
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 3 +++
4 files changed, 63 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 47763ac0d14a..41bd3a1a1989 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -281,6 +281,7 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p,
case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT:
case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL:
+ case AMDGPU_CHUNK_ID_CP_GFX_SHADOW:
break;
default:
@@ -583,6 +584,26 @@ static int amdgpu_cs_p2_syncobj_timeline_signal(struct amdgpu_cs_parser *p,
return 0;
}
+static int amdgpu_cs_p2_shadow(struct amdgpu_cs_parser *p,
+ struct amdgpu_cs_chunk *chunk)
+{
+ struct drm_amdgpu_cs_chunk_cp_gfx_shadow *shadow = chunk->kdata;
+ int i;
+
+ if (shadow->flags & ~AMDGPU_CS_CHUNK_CP_GFX_SHADOW_FLAGS_INIT_SHADOW)
+ return -EINVAL;
+
+ for (i = 0; i < p->gang_size; ++i) {
+ p->jobs[i]->shadow_va = shadow->shadow_va;
+ p->jobs[i]->csa_va = shadow->csa_va;
+ p->jobs[i]->gds_va = shadow->gds_va;
+ p->jobs[i]->init_shadow =
+ shadow->flags & AMDGPU_CS_CHUNK_CP_GFX_SHADOW_FLAGS_INIT_SHADOW;
+ }
+
+ return 0;
+}
+
static int amdgpu_cs_pass2(struct amdgpu_cs_parser *p)
{
unsigned int ce_preempt = 0, de_preempt = 0;
@@ -625,6 +646,11 @@ static int amdgpu_cs_pass2(struct amdgpu_cs_parser *p)
if (r)
return r;
break;
+ case AMDGPU_CHUNK_ID_CP_GFX_SHADOW:
+ r = amdgpu_cs_p2_shadow(p, chunk);
+ if (r)
+ return r;
+ break;
}
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index bcccc348dbe2..9bee630eb0c9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -136,7 +136,9 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
uint64_t fence_ctx;
uint32_t status = 0, alloc_size;
unsigned fence_flags = 0;
- bool secure;
+ bool secure, init_shadow;
+ u64 shadow_va, csa_va, gds_va;
+ int vmid = AMDGPU_JOB_GET_VMID(job);
unsigned i;
int r = 0;
@@ -150,9 +152,17 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
vm = job->vm;
fence_ctx = job->base.s_fence ?
job->base.s_fence->scheduled.context : 0;
+ shadow_va = job->shadow_va;
+ csa_va = job->csa_va;
+ gds_va = job->gds_va;
+ init_shadow = job->init_shadow;
} else {
vm = NULL;
fence_ctx = 0;
+ shadow_va = 0;
+ csa_va = 0;
+ gds_va = 0;
+ init_shadow = false;
}
if (!ring->sched.ready && !ring->is_mes_queue) {
@@ -212,6 +222,11 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
}
amdgpu_ring_ib_begin(ring);
+
+ if (job && ring->funcs->emit_gfx_shadow)
+ amdgpu_ring_emit_gfx_shadow(ring, shadow_va, csa_va, gds_va,
+ init_shadow, vmid);
+
if (job && ring->funcs->init_cond_exec)
patch_offset = amdgpu_ring_init_cond_exec(ring);
@@ -263,6 +278,18 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
fence_flags | AMDGPU_FENCE_FLAG_64BIT);
}
+ if (ring->funcs->emit_gfx_shadow) {
+ amdgpu_ring_emit_gfx_shadow(ring, 0, 0, 0, false, 0);
+
+ if (ring->funcs->init_cond_exec) {
+ unsigned ce_offset = ~0;
+
+ ce_offset = amdgpu_ring_init_cond_exec(ring);
+ if (ce_offset != ~0 && ring->funcs->patch_cond_exec)
+ amdgpu_ring_patch_cond_exec(ring, ce_offset);
+ }
+ }
+
r = amdgpu_fence_emit(ring, f, job, fence_flags);
if (r) {
dev_err(adev->dev, "failed to emit fence (%d)\n", r);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
index 52f2e313ea17..3f9804f956c9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
@@ -67,6 +67,12 @@ struct amdgpu_job {
uint64_t uf_addr;
uint64_t uf_sequence;
+ /* virtual addresses for shadow/GDS/CSA */
+ uint64_t shadow_va;
+ uint64_t csa_va;
+ uint64_t gds_va;
+ bool init_shadow;
Doesn't the job has a flags field for stuff like that? Or was that the IB?
Apart from that looks good to me.
+
/* job_run_counter >= 1 means a resubmit job */
uint32_t job_run_counter;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 3989e755a5b4..7942cb62e52c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -212,6 +212,8 @@ struct amdgpu_ring_funcs {
void (*end_use)(struct amdgpu_ring *ring);
void (*emit_switch_buffer) (struct amdgpu_ring *ring);
void (*emit_cntxcntl) (struct amdgpu_ring *ring, uint32_t flags);
+ void (*emit_gfx_shadow)(struct amdgpu_ring *ring, u64 shadow_va, u64 csa_va,
+ u64 gds_va, bool init_shadow, int vmid);
void (*emit_rreg)(struct amdgpu_ring *ring, uint32_t reg,
uint32_t reg_val_offs);
void (*emit_wreg)(struct amdgpu_ring *ring, uint32_t reg, uint32_t val);
@@ -307,6 +309,7 @@ struct amdgpu_ring {
#define amdgpu_ring_emit_hdp_flush(r) (r)->funcs->emit_hdp_flush((r))
#define amdgpu_ring_emit_switch_buffer(r) (r)->funcs->emit_switch_buffer((r))
#define amdgpu_ring_emit_cntxcntl(r, d) (r)->funcs->emit_cntxcntl((r), (d))
+#define amdgpu_ring_emit_gfx_shadow(r, s, c, g, i, v) (r)->funcs->emit_gfx_shadow((r), (s), (c), (g), (i), (v))
#define amdgpu_ring_emit_rreg(r, d, o) (r)->funcs->emit_rreg((r), (d), (o))
#define amdgpu_ring_emit_wreg(r, d, v) (r)->funcs->emit_wreg((r), (d), (v))
#define amdgpu_ring_emit_reg_wait(r, d, v, m) (r)->funcs->emit_reg_wait((r), (d), (v), (m))
