drm/amdgpu: specify sdma instance 5~7 with second mmhub type

On Arcturus, sdma instance 5~7 is connected to the second mmhub. The vmhub type
in amdgpu_ring_funcs is constant, so we create an individual amdgpu_ring_funcs
with different vmhub type(AMDGPU_MMHUB_1) for these sdma instances.
Signed-off-by: Le Ma <le.ma@amd.com>
Acked-by: Snow Zhang < Snow.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

@@ -2216,6 +2216,42 @@ static const struct amdgpu_ring_funcs sdma_v4_0_ring_funcs = {
 	.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
 };
 
+/*
+ * On Arcturus, SDMA instance 5~7 has a different vmhub type(AMDGPU_MMHUB_1).
+ * So create a individual constant ring_funcs for those instances.
+ */
+static const struct amdgpu_ring_funcs sdma_v4_0_ring_funcs_2nd_mmhub = {
+	.type = AMDGPU_RING_TYPE_SDMA,
+	.align_mask = 0xf,
+	.nop = SDMA_PKT_NOP_HEADER_OP(SDMA_OP_NOP),
+	.support_64bit_ptrs = true,
+	.vmhub = AMDGPU_MMHUB_1,
+	.get_rptr = sdma_v4_0_ring_get_rptr,
+	.get_wptr = sdma_v4_0_ring_get_wptr,
+	.set_wptr = sdma_v4_0_ring_set_wptr,
+	.emit_frame_size =
+		6 + /* sdma_v4_0_ring_emit_hdp_flush */
+		3 + /* hdp invalidate */
+		6 + /* sdma_v4_0_ring_emit_pipeline_sync */
+		/* sdma_v4_0_ring_emit_vm_flush */
+		SOC15_FLUSH_GPU_TLB_NUM_WREG * 3 +
+		SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT * 6 +
+		10 + 10 + 10, /* sdma_v4_0_ring_emit_fence x3 for user fence, vm fence */
+	.emit_ib_size = 7 + 6, /* sdma_v4_0_ring_emit_ib */
+	.emit_ib = sdma_v4_0_ring_emit_ib,
+	.emit_fence = sdma_v4_0_ring_emit_fence,
+	.emit_pipeline_sync = sdma_v4_0_ring_emit_pipeline_sync,
+	.emit_vm_flush = sdma_v4_0_ring_emit_vm_flush,
+	.emit_hdp_flush = sdma_v4_0_ring_emit_hdp_flush,
+	.test_ring = sdma_v4_0_ring_test_ring,
+	.test_ib = sdma_v4_0_ring_test_ib,
+	.insert_nop = sdma_v4_0_ring_insert_nop,
+	.pad_ib = sdma_v4_0_ring_pad_ib,
+	.emit_wreg = sdma_v4_0_ring_emit_wreg,
+	.emit_reg_wait = sdma_v4_0_ring_emit_reg_wait,
+	.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
+};
+
 static const struct amdgpu_ring_funcs sdma_v4_0_page_ring_funcs = {
 	.type = AMDGPU_RING_TYPE_SDMA,
 	.align_mask = 0xf,
@@ -2253,7 +2289,12 @@ static void sdma_v4_0_set_ring_funcs(struct amdgpu_device *adev)
 	int i;
 
 	for (i = 0; i < adev->sdma.num_instances; i++) {
-		adev->sdma.instance[i].ring.funcs = &sdma_v4_0_ring_funcs;
+		if (adev->asic_type == CHIP_ARCTURUS && i >=5)
+			adev->sdma.instance[i].ring.funcs =
+					&sdma_v4_0_ring_funcs_2nd_mmhub;
+		else
+			adev->sdma.instance[i].ring.funcs =
+					&sdma_v4_0_ring_funcs;
 		adev->sdma.instance[i].ring.me = i;
 		if (adev->sdma.has_page_queue) {
 			adev->sdma.instance[i].page.funcs = &sdma_v4_0_page_ring_funcs;