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authorLang Yu <Lang.Yu@amd.com>2022-03-08 11:26:41 +0800
committerAlex Deucher <alexander.deucher@amd.com>2022-03-25 12:40:24 -0400
commit0d8e4eb337644cab528ff3844675d58496ec22db (patch)
treef0295a017eb027d072a47db06c4305bc68bfb96d /drivers/gpu/drm/amd
parentb818a5d374542ccec73dcfe578a081574029820e (diff)
downloadlinux-0d8e4eb337644cab528ff3844675d58496ec22db.tar.bz2
drm/amdgpu: add workarounds for VCN TMZ issue on CHIP_RAVEN
It is a hardware issue that VCN can't handle a GTT backing stored TMZ buffer on CHIP_RAVEN series ASIC. Move such a TMZ buffer to VRAM domain before command submission as a workaround. v2: - Use patch_cs_in_place callback. v3: - Bail out early if unsecure IBs. Suggested-by: Christian König <christian.koenig@amd.com> Signed-off-by: Lang Yu <Lang.Yu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
index dff54190b96c..f0fbcda76f5e 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
@@ -24,6 +24,7 @@
#include <linux/firmware.h>
#include "amdgpu.h"
+#include "amdgpu_cs.h"
#include "amdgpu_vcn.h"
#include "amdgpu_pm.h"
#include "soc15.h"
@@ -1900,6 +1901,75 @@ static const struct amd_ip_funcs vcn_v1_0_ip_funcs = {
.set_powergating_state = vcn_v1_0_set_powergating_state,
};
+/*
+ * It is a hardware issue that VCN can't handle a GTT TMZ buffer on
+ * CHIP_RAVEN series ASIC. Move such a GTT TMZ buffer to VRAM domain
+ * before command submission as a workaround.
+ */
+static int vcn_v1_0_validate_bo(struct amdgpu_cs_parser *parser,
+ struct amdgpu_job *job,
+ uint64_t addr)
+{
+ struct ttm_operation_ctx ctx = { false, false };
+ struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
+ struct amdgpu_vm *vm = &fpriv->vm;
+ struct amdgpu_bo_va_mapping *mapping;
+ struct amdgpu_bo *bo;
+ int r;
+
+ addr &= AMDGPU_GMC_HOLE_MASK;
+ if (addr & 0x7) {
+ DRM_ERROR("VCN messages must be 8 byte aligned!\n");
+ return -EINVAL;
+ }
+
+ mapping = amdgpu_vm_bo_lookup_mapping(vm, addr/AMDGPU_GPU_PAGE_SIZE);
+ if (!mapping || !mapping->bo_va || !mapping->bo_va->base.bo)
+ return -EINVAL;
+
+ bo = mapping->bo_va->base.bo;
+ if (!(bo->flags & AMDGPU_GEM_CREATE_ENCRYPTED))
+ return 0;
+
+ amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_VRAM);
+ r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
+ if (r) {
+ DRM_ERROR("Failed to validate the VCN message BO (%d)!\n", r);
+ return r;
+ }
+
+ return r;
+}
+
+static int vcn_v1_0_ring_patch_cs_in_place(struct amdgpu_cs_parser *p,
+ struct amdgpu_job *job,
+ struct amdgpu_ib *ib)
+{
+ uint32_t msg_lo = 0, msg_hi = 0;
+ int i, r;
+
+ if (!(ib->flags & AMDGPU_IB_FLAGS_SECURE))
+ return 0;
+
+ for (i = 0; i < ib->length_dw; i += 2) {
+ uint32_t reg = amdgpu_ib_get_value(ib, i);
+ uint32_t val = amdgpu_ib_get_value(ib, i + 1);
+
+ if (reg == PACKET0(p->adev->vcn.internal.data0, 0)) {
+ msg_lo = val;
+ } else if (reg == PACKET0(p->adev->vcn.internal.data1, 0)) {
+ msg_hi = val;
+ } else if (reg == PACKET0(p->adev->vcn.internal.cmd, 0)) {
+ r = vcn_v1_0_validate_bo(p, job,
+ ((u64)msg_hi) << 32 | msg_lo);
+ if (r)
+ return r;
+ }
+ }
+
+ return 0;
+}
+
static const struct amdgpu_ring_funcs vcn_v1_0_dec_ring_vm_funcs = {
.type = AMDGPU_RING_TYPE_VCN_DEC,
.align_mask = 0xf,
@@ -1910,6 +1980,7 @@ static const struct amdgpu_ring_funcs vcn_v1_0_dec_ring_vm_funcs = {
.get_rptr = vcn_v1_0_dec_ring_get_rptr,
.get_wptr = vcn_v1_0_dec_ring_get_wptr,
.set_wptr = vcn_v1_0_dec_ring_set_wptr,
+ .patch_cs_in_place = vcn_v1_0_ring_patch_cs_in_place,
.emit_frame_size =
6 + 6 + /* hdp invalidate / flush */
SOC15_FLUSH_GPU_TLB_NUM_WREG * 6 +