Am 07.08.19 um 04:31 schrieb Zeng, Oak:
Add definition of all supported mtypes. The RW mtype
is recently introduced for arcturus. Also add definition
for the cachable/snoopable bit, which will be used later
in this series.
Change-Id: I96fc9bb4b6b1e62bdc10b600d8aaa6a802128d6d
Signed-off-by: Oak Zeng <Oak.Zeng@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 9 +++++++--
include/uapi/drm/amdgpu_drm.h | 4 ++++
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index 2eda3a8..7a77477 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -80,8 +80,13 @@ struct amdgpu_bo_list_entry;
#define AMDGPU_PTE_MTYPE_VG10(a) ((uint64_t)(a) << 57)
#define AMDGPU_PTE_MTYPE_VG10_MASK AMDGPU_PTE_MTYPE_VG10(3ULL)
-#define AMDGPU_MTYPE_NC 0
-#define AMDGPU_MTYPE_CC 2
+enum amdgpu_mtype {
+ AMDGPU_MTYPE_NC = 0,
+ AMDGPU_MTYPE_WC = 1,
+ AMDGPU_MTYPE_CC = 2,
+ AMDGPU_MTYPE_UC = 3,
+ AMDGPU_MTYPE_RW = 4,
+};
#define AMDGPU_PTE_DEFAULT_ATC (AMDGPU_PTE_SYSTEM \
| AMDGPU_PTE_SNOOPED \
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index ca97b68..2889663 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -503,6 +503,10 @@ struct drm_amdgpu_gem_op {
#define AMDGPU_VM_MTYPE_CC (3 << 5)
/* Use UC MTYPE instead of default MTYPE */
#define AMDGPU_VM_MTYPE_UC (4 << 5)
+/* Use RW MTYPE instead of default MTYPE */
+#define AMDGPU_VM_MTYPE_RW (5 << 5)
+/* Cacheable/snoopable */
+#define AMDGPU_VM_PAGE_SNOOPED (1 << 9)
That's a rather big NAK. Cache snooping is not something userspace is
allowed to be aware of.
Christian.
struct drm_amdgpu_gem_va {
/** GEM object handle */
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