drm/amdgpu: update SDMA 5.2 microcode init

Removed loading duplicate instances of SDMA FW for Sienna_Cichlid,
As sienna_cichlid only use a single image for all instances.
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c

@@ -45,9 +45,6 @@
 #include "sdma_v5_2.h"
 
 MODULE_FIRMWARE("amdgpu/sienna_cichlid_sdma.bin");
-MODULE_FIRMWARE("amdgpu/sienna_cichlid_sdma1.bin");
-MODULE_FIRMWARE("amdgpu/sienna_cichlid_sdma2.bin");
-MODULE_FIRMWARE("amdgpu/sienna_cichlid_sdma3.bin");
 
 #define SDMA1_REG_OFFSET 0x600
 #define SDMA3_REG_OFFSET 0x400
@@ -94,6 +91,41 @@ static void sdma_v5_2_init_golden_registers(struct amdgpu_device *adev)
 	}
 }
 
+static int sdma_v5_2_init_inst_ctx(struct amdgpu_sdma_instance *sdma_inst)
+{
+	int err = 0;
+	const struct sdma_firmware_header_v1_0 *hdr;
+
+	err = amdgpu_ucode_validate(sdma_inst->fw);
+	if (err)
+		return err;
+
+	hdr = (const struct sdma_firmware_header_v1_0 *)sdma_inst->fw->data;
+	sdma_inst->fw_version = le32_to_cpu(hdr->header.ucode_version);
+	sdma_inst->feature_version = le32_to_cpu(hdr->ucode_feature_version);
+
+	if (sdma_inst->feature_version >= 20)
+		sdma_inst->burst_nop = true;
+
+	return 0;
+}
+
+static void sdma_v5_2_destroy_inst_ctx(struct amdgpu_device *adev)
+{
+	int i;
+
+	for (i = 0; i < adev->sdma.num_instances; i++) {
+		if (adev->sdma.instance[i].fw != NULL)
+			release_firmware(adev->sdma.instance[i].fw);
+
+		if (adev->asic_type == CHIP_SIENNA_CICHLID)
+			break;
+	}
+
+	memset((void*)adev->sdma.instance, 0,
+	       sizeof(struct amdgpu_sdma_instance) * AMDGPU_MAX_SDMA_INSTANCES);
+}
+
 /**
  * sdma_v5_2_init_microcode - load ucode images from disk
  *
@@ -113,7 +145,6 @@ static int sdma_v5_2_init_microcode(struct amdgpu_device *adev)
 	int err = 0, i;
 	struct amdgpu_firmware_info *info = NULL;
 	const struct common_firmware_header *header = NULL;
-	const struct sdma_firmware_header_v1_0 *hdr;
 
 	DRM_DEBUG("\n");
 
@@ -125,26 +156,38 @@ static int sdma_v5_2_init_microcode(struct amdgpu_device *adev)
 		BUG();
 	}
 
-	for (i = 0; i < adev->sdma.num_instances; i++) {
-		if (i == 0)
 	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_sdma.bin", chip_name);
-		else
+
+	err = request_firmware(&adev->sdma.instance[0].fw, fw_name, adev->dev);
+	if (err)
+		goto out;
+
+	err = sdma_v5_2_init_inst_ctx(&adev->sdma.instance[0]);
+	if (err)
+		goto out;
+
+	for (i = 1; i < adev->sdma.num_instances; i++) {
+		if (adev->asic_type == CHIP_SIENNA_CICHLID) {
+			memcpy((void*)&adev->sdma.instance[i],
+			       (void*)&adev->sdma.instance[0],
+			       sizeof(struct amdgpu_sdma_instance));
+		} else {
 			snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_sdma%d.bin", chip_name, i);
 			err = request_firmware(&adev->sdma.instance[i].fw, fw_name, adev->dev);
 			if (err)
 				goto out;
-		err = amdgpu_ucode_validate(adev->sdma.instance[i].fw);
+
+			err = sdma_v5_2_init_inst_ctx(&adev->sdma.instance[0]);
 			if (err)
 				goto out;
-		hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma.instance[i].fw->data;
-		adev->sdma.instance[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
-		adev->sdma.instance[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
-		if (adev->sdma.instance[i].feature_version >= 20)
-			adev->sdma.instance[i].burst_nop = true;
+		}
+	}
+
 	DRM_DEBUG("psp_load == '%s'\n",
 		  adev->firmware.load_type == AMDGPU_FW_LOAD_PSP ? "true" : "false");
 
 	if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
+		for (i = 0; i < adev->sdma.num_instances; i++) {
 			info = &adev->firmware.ucode[AMDGPU_UCODE_ID_SDMA0 + i];
 			info->ucode_id = AMDGPU_UCODE_ID_SDMA0 + i;
 			info->fw = adev->sdma.instance[i].fw;
@@ -153,13 +196,11 @@ static int sdma_v5_2_init_microcode(struct amdgpu_device *adev)
 				ALIGN(le32_to_cpu(header->ucode_size_bytes), PAGE_SIZE);
 		}
 	}
+
 out:
 	if (err) {
 		DRM_ERROR("sdma_v5_2: Failed to load firmware \"%s\"\n", fw_name);
-		for (i = 0; i < adev->sdma.num_instances; i++) {
-			release_firmware(adev->sdma.instance[i].fw);
-			adev->sdma.instance[i].fw = NULL;
-		}
+		sdma_v5_2_destroy_inst_ctx(adev);
 	}
 	return err;
 }
@@ -1204,10 +1245,8 @@ static int sdma_v5_2_sw_init(void *handle)
 static int sdma_v5_2_sw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
-	int i;
 
-	for (i = 0; i < adev->sdma.num_instances; i++)
-		amdgpu_ring_fini(&adev->sdma.instance[i].ring);
+	sdma_v5_2_destroy_inst_ctx(adev);
 
 	return 0;
 }