drm/amdgpu:implement CONTEXT_CONTROL (v5)
v1:
for gfx8, use CONTEXT_CONTROL package to dynamically
skip preamble CEIB and other load_xxx command in sequence.
v2:
support GFX7 as well.
remove cntxcntl in compute ring funcs because CPC doesn't
support this packet.
v3: fix reduntant judgement in cntxcntl.
v4: some cleanups, don't change cs_submit()
v5: keep old MESA supported & bump up KMS version.
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Ack-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 04263f0..2aa741c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -125,6 +125,7 @@
unsigned patch_offset = ~0;
struct amdgpu_vm *vm;
uint64_t fence_ctx;
+ uint32_t status = 0;
unsigned i;
int r = 0;
@@ -176,11 +177,20 @@
skip_preamble = ring->current_ctx == fence_ctx;
need_ctx_switch = ring->current_ctx != fence_ctx;
+ if (job && ring->funcs->emit_cntxcntl) {
+ if (need_ctx_switch)
+ status |= AMDGPU_HAVE_CTX_SWITCH;
+ status |= job->preamble_status;
+ amdgpu_ring_emit_cntxcntl(ring, status);
+ }
+
for (i = 0; i < num_ibs; ++i) {
ib = &ibs[i];
/* drop preamble IBs if we don't have a context switch */
- if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) && skip_preamble)
+ if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) &&
+ skip_preamble &&
+ !(status & AMDGPU_PREAMBLE_IB_PRESENT_FIRST))
continue;
amdgpu_ring_emit_ib(ring, ib, job ? job->vm_id : 0,