drm/amdgpu: correct the vmhub reference for each XCD in gfxhub init

Correct this though the value is same across different vmhub.
Signed-off-by: Le Ma <le.ma@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfxhub_v1_2.c

@@ -42,10 +42,11 @@ static void gfxhub_v1_2_setup_vm_pt_regs(struct amdgpu_device *adev,
 					 uint32_t vmid,
 					 uint64_t page_table_base)
 {
-	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
+	struct amdgpu_vmhub *hub;
 	int i;
 
 	for (i = 0; i < adev->gfx.num_xcd; i++) {
+		hub = &adev->vmhub[AMDGPU_GFXHUB(i)];
 		WREG32_SOC15_OFFSET(GC, i,
 				    regVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
 				    hub->ctx_addr_distance * vmid,
@@ -291,7 +292,7 @@ static void gfxhub_v1_2_disable_identity_aperture(struct amdgpu_device *adev)
 
 static void gfxhub_v1_2_setup_vmid_config(struct amdgpu_device *adev)
 {
-	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
+	struct amdgpu_vmhub *hub;
 	unsigned num_level, block_size;
 	uint32_t tmp;
 	int i, j;
@@ -304,6 +305,7 @@ static void gfxhub_v1_2_setup_vmid_config(struct amdgpu_device *adev)
 		block_size -= 9;
 
 	for (j = 0; j < adev->gfx.num_xcd; j++) {
+		hub = &adev->vmhub[AMDGPU_GFXHUB(j)];
 		for (i = 0; i <= 14; i++) {
 			tmp = RREG32_SOC15_OFFSET(GC, j, regVM_CONTEXT1_CNTL, i);
 			tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, ENABLE_CONTEXT, 1);
@@ -359,10 +361,11 @@ static void gfxhub_v1_2_setup_vmid_config(struct amdgpu_device *adev)
 
 static void gfxhub_v1_2_program_invalidation(struct amdgpu_device *adev)
 {
-	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
+	struct amdgpu_vmhub *hub;
 	unsigned i, j;
 
 	for (j = 0; j < adev->gfx.num_xcd; j++) {
+		hub = &adev->vmhub[AMDGPU_GFXHUB(j)];
 		for (i = 0 ; i < 18; ++i) {
 			WREG32_SOC15_OFFSET(GC, j, regVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
 					    i * hub->eng_addr_distance, 0xffffffff);
@@ -408,11 +411,12 @@ static int gfxhub_v1_2_gart_enable(struct amdgpu_device *adev)
 
 static void gfxhub_v1_2_gart_disable(struct amdgpu_device *adev)
 {
-	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
+	struct amdgpu_vmhub *hub;
 	u32 tmp;
 	u32 i, j;
 
 	for (j = 0; j < adev->gfx.num_xcd; j++) {
+		hub = &adev->vmhub[AMDGPU_GFXHUB(j)];
 		/* Disable all tables */
 		for (i = 0; i < 16; i++)
 			WREG32_SOC15_OFFSET(GC, j, regVM_CONTEXT0_CNTL,