drm/amdgpu: use register distance member instead of hardcode in gfxhub v1

This patch updates to use register distance member instead of hardcode
in gfxhub v1.
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/gfxhub_v1_0.c

@@ -38,15 +38,15 @@ u64 gfxhub_v1_0_get_mc_fb_offset(struct amdgpu_device *adev)
 void gfxhub_v1_0_setup_vm_pt_regs(struct amdgpu_device *adev, uint32_t vmid,
 				uint64_t page_table_base)
 {
-	/* two registers distance between mmVM_CONTEXT0_* to mmVM_CONTEXT1_* */
-	int offset = mmVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32
-			- mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
+	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
 
 	WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
-				offset * vmid, lower_32_bits(page_table_base));
+			    hub->ctx_addr_distance * vmid,
+			    lower_32_bits(page_table_base));
 
 	WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32,
-				offset * vmid, upper_32_bits(page_table_base));
+			    hub->ctx_addr_distance * vmid,
+			    upper_32_bits(page_table_base));
 }
 
 static void gfxhub_v1_0_init_gart_aperture_regs(struct amdgpu_device *adev)
@@ -207,6 +207,7 @@ static void gfxhub_v1_0_disable_identity_aperture(struct amdgpu_device *adev)
 
 static void gfxhub_v1_0_setup_vmid_config(struct amdgpu_device *adev)
 {
+	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
 	unsigned num_level, block_size;
 	uint32_t tmp;
 	int i;
@@ -245,25 +246,31 @@ static void gfxhub_v1_0_setup_vmid_config(struct amdgpu_device *adev)
 		tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 				    RETRY_PERMISSION_OR_INVALID_PAGE_FAULT,
 				    !amdgpu_noretry);
-		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_CNTL, i, tmp);
-		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32, i*2, 0);
-		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32, i*2, 0);
-		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32,  i*2,
+		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_CNTL,
+				    i * hub->ctx_distance, tmp);
+		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32,
+				    i * hub->ctx_addr_distance, 0);
+		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32,
+				    i * hub->ctx_addr_distance, 0);
+		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32,
+				    i * hub->ctx_addr_distance,
 				    lower_32_bits(adev->vm_manager.max_pfn - 1));
-		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32, i*2,
+		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32,
+				    i * hub->ctx_addr_distance,
 				    upper_32_bits(adev->vm_manager.max_pfn - 1));
 	}
 }
 
 static void gfxhub_v1_0_program_invalidation(struct amdgpu_device *adev)
 {
+	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
 	unsigned i;
 
 	for (i = 0 ; i < 18; ++i) {
 		WREG32_SOC15_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
-				    2 * i, 0xffffffff);
+				    i * hub->eng_addr_distance, 0xffffffff);
 		WREG32_SOC15_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_ADDR_RANGE_HI32,
-				    2 * i, 0x1f);
+				    i * hub->eng_addr_distance, 0x1f);
 	}
 }
 
@@ -299,12 +306,14 @@ int gfxhub_v1_0_gart_enable(struct amdgpu_device *adev)
 
 void gfxhub_v1_0_gart_disable(struct amdgpu_device *adev)
 {
+	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
 	u32 tmp;
 	u32 i;
 
 	/* Disable all tables */
 	for (i = 0; i < 16; i++)
-		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT0_CNTL, i, 0);
+		WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT0_CNTL,
+				    i * hub->ctx_distance, 0);
 
 	/* Setup TLB control */
 	tmp = RREG32_SOC15(GC, 0, mmMC_VM_MX_L1_TLB_CNTL);