drm/amdgpu: add register distance members into vmhub structure

This patch is to abstract register distances between two continuous
context domains and invalidation engines. In different ip headers, these
distances may be differences.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Tested-by: AnZhong Huang <anzhong.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h

@@ -83,6 +83,15 @@ struct amdgpu_vmhub {
 	uint32_t	vm_context0_cntl;
 	uint32_t	vm_l2_pro_fault_status;
 	uint32_t	vm_l2_pro_fault_cntl;
+
+	/*
+	 * store the register distances between two continuous context domain
+	 * and invalidation engine.
+	 */
+	uint32_t	ctx_distance;
+	uint32_t	ctx_addr_distance; /* include LO32/HI32 */
+	uint32_t	eng_distance;
+	uint32_t	eng_addr_distance; /* include LO32/HI32 */
 };
 
 /*

drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c

@@ -386,4 +386,11 @@ void gfxhub_v1_0_init(struct amdgpu_device *adev)
 		SOC15_REG_OFFSET(GC, 0, mmVM_L2_PROTECTION_FAULT_STATUS);
 	hub->vm_l2_pro_fault_cntl =
 		SOC15_REG_OFFSET(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL);
+
+	hub->ctx_distance = mmVM_CONTEXT1_CNTL - mmVM_CONTEXT0_CNTL;
+	hub->ctx_addr_distance = mmVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
+		mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
+	hub->eng_distance = mmVM_INVALIDATE_ENG1_REQ - mmVM_INVALIDATE_ENG0_REQ;
+	hub->eng_addr_distance = mmVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
+		mmVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;
 }

drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c

@@ -373,4 +373,12 @@ void gfxhub_v2_0_init(struct amdgpu_device *adev)
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_STATUS);
 	hub->vm_l2_pro_fault_cntl =
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);
+
+	hub->ctx_distance = mmGCVM_CONTEXT1_CNTL - mmGCVM_CONTEXT0_CNTL;
+	hub->ctx_addr_distance = mmGCVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
+		mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
+	hub->eng_distance = mmGCVM_INVALIDATE_ENG1_REQ -
+		mmGCVM_INVALIDATE_ENG0_REQ;
+	hub->eng_addr_distance = mmGCVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
+		mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;
 }

drivers/gpu/drm/amd/amdgpu/gfxhub_v2_1.c

@@ -372,6 +372,14 @@ void gfxhub_v2_1_init(struct amdgpu_device *adev)
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_STATUS);
 	hub->vm_l2_pro_fault_cntl =
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);
+
+	hub->ctx_distance = mmGCVM_CONTEXT1_CNTL - mmGCVM_CONTEXT0_CNTL;
+	hub->ctx_addr_distance = mmGCVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
+		mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
+	hub->eng_distance = mmGCVM_INVALIDATE_ENG1_REQ -
+		mmGCVM_INVALIDATE_ENG0_REQ;
+	hub->eng_addr_distance = mmGCVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
+		mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;
 }
 
 int gfxhub_v2_1_get_xgmi_info(struct amdgpu_device *adev)

drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c

@@ -429,6 +429,12 @@ void mmhub_v1_0_init(struct amdgpu_device *adev)
 	hub->vm_l2_pro_fault_cntl =
 		SOC15_REG_OFFSET(MMHUB, 0, mmVM_L2_PROTECTION_FAULT_CNTL);
 
+	hub->ctx_distance = mmVM_CONTEXT1_CNTL - mmVM_CONTEXT0_CNTL;
+	hub->ctx_addr_distance = mmVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
+		mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
+	hub->eng_distance = mmVM_INVALIDATE_ENG1_REQ - mmVM_INVALIDATE_ENG0_REQ;
+	hub->eng_addr_distance = mmVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
+		mmVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;
 }
 
 static void mmhub_v1_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,

drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c

@@ -365,6 +365,13 @@ void mmhub_v2_0_init(struct amdgpu_device *adev)
 	hub->vm_l2_pro_fault_cntl =
 		SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_CNTL);
 
+	hub->ctx_distance = mmMMVM_CONTEXT1_CNTL - mmMMVM_CONTEXT0_CNTL;
+	hub->ctx_addr_distance = mmMMVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
+		mmMMVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
+	hub->eng_distance = mmMMVM_INVALIDATE_ENG1_REQ -
+		mmMMVM_INVALIDATE_ENG0_REQ;
+	hub->eng_addr_distance = mmMMVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
+		mmMMVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;
 }
 
 static void mmhub_v2_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,

drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c

@@ -534,6 +534,15 @@ void mmhub_v9_4_init(struct amdgpu_device *adev)
 			SOC15_REG_OFFSET(MMHUB, 0,
 				    mmVML2PF0_VM_L2_PROTECTION_FAULT_CNTL) +
 				    i * MMHUB_INSTANCE_REGISTER_OFFSET;
+
+		hub[i]->ctx_distance = mmVML2VC0_VM_CONTEXT1_CNTL -
+			mmVML2VC0_VM_CONTEXT0_CNTL;
+		hub[i]->ctx_addr_distance = mmVML2VC0_VM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
+			mmVML2VC0_VM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
+		hub[i]->eng_distance = mmVML2VC0_VM_INVALIDATE_ENG1_REQ -
+			mmVML2VC0_VM_INVALIDATE_ENG0_REQ;
+		hub[i]->eng_addr_distance = mmVML2VC0_VM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
+			mmVML2VC0_VM_INVALIDATE_ENG0_ADDR_RANGE_LO32;
 	}
 }