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[05/35] drm/amdkfd: Add SVM API support capability bits

Message ID 20210107030127.20393-6-Felix.Kuehling@amd.com (mailing list archive)
State New, archived
Headers show
Series Add HMM-based SVM memory manager to KFD | expand

Commit Message

Felix Kuehling Jan. 7, 2021, 3 a.m. UTC 
From: Philip Yang <Philip.Yang@amd.com>

SVMAPISupported property added to HSA_CAPABILITY, the value match
HSA_CAPABILITY defined in Thunk spec:

SVMAPISupported: it will not be supported on older kernels that don't
have HMM or on GFXv8 or older GPUs without support for 48-bit virtual
addresses.

CoherentHostAccess property added to HSA_MEMORYPROPERTY, the value match
HSA_MEMORYPROPERTY defined in Thunk spec:

CoherentHostAccess: whether or not device memory can be coherently
accessed by the host CPU.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c |  1 +
 drivers/gpu/drm/amd/amdkfd/kfd_topology.h | 10 ++++++----
 2 files changed, 7 insertions(+), 4 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index a3fc23873819..885b8a071717 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -1380,6 +1380,7 @@  int kfd_topology_add_device(struct kfd_dev *gpu)
 		dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 <<
 			HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
 			HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
+		dev->node_props.capability |= HSA_CAP_SVMAPI_SUPPORTED;
 		break;
 	default:
 		WARN(1, "Unexpected ASIC family %u",
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
index 326d9b26b7aa..7c5ea9b4b9d9 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
@@ -52,8 +52,9 @@ 
 #define HSA_CAP_RASEVENTNOTIFY			0x00200000
 #define HSA_CAP_ASIC_REVISION_MASK		0x03c00000
 #define HSA_CAP_ASIC_REVISION_SHIFT		22
+#define HSA_CAP_SVMAPI_SUPPORTED		0x04000000
 
-#define HSA_CAP_RESERVED			0xfc078000
+#define HSA_CAP_RESERVED			0xf8078000
 
 struct kfd_node_properties {
 	uint64_t hive_id;
@@ -98,9 +99,10 @@  struct kfd_node_properties {
 #define HSA_MEM_HEAP_TYPE_GPU_LDS	4
 #define HSA_MEM_HEAP_TYPE_GPU_SCRATCH	5
 
-#define HSA_MEM_FLAGS_HOT_PLUGGABLE	0x00000001
-#define HSA_MEM_FLAGS_NON_VOLATILE	0x00000002
-#define HSA_MEM_FLAGS_RESERVED		0xfffffffc
+#define HSA_MEM_FLAGS_HOT_PLUGGABLE		0x00000001
+#define HSA_MEM_FLAGS_NON_VOLATILE		0x00000002
+#define HSA_MEM_FLAGS_COHERENTHOSTACCESS	0x00000004
+#define HSA_MEM_FLAGS_RESERVED			0xfffffff8
 
 struct kfd_mem_properties {
 	struct list_head	list;