drm/amdgpu: load mc firware in driver for Polaris.

load mc ucode in driver if VBIOS not loaded
a full version of MC ucode,
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: jimqu <Jim.Qu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c

@@ -253,14 +253,14 @@ static int gmc_v8_0_init_microcode(struct amdgpu_device *adev)
 }
 
 /**
- * gmc_v8_0_mc_load_microcode - load MC ucode into the hw
+ * gmc_v8_0_tonga_mc_load_microcode - load tonga MC ucode into the hw
  *
  * @adev: amdgpu_device pointer
  *
  * Load the GDDR MC ucode into the hw (CIK).
  * Returns 0 on success, error on failure.
  */
-static int gmc_v8_0_mc_load_microcode(struct amdgpu_device *adev)
+static int gmc_v8_0_tonga_mc_load_microcode(struct amdgpu_device *adev)
 {
 	const struct mc_firmware_header_v1_0 *hdr;
 	const __le32 *fw_data = NULL;
@@ -268,9 +268,6 @@ static int gmc_v8_0_mc_load_microcode(struct amdgpu_device *adev)
 	u32 running;
 	int i, ucode_size, regs_size;
 
-	if (!adev->mc.fw)
-		return -EINVAL;
-
 	/* Skip MC ucode loading on SR-IOV capable boards.
 	 * vbios does this for us in asic_init in that case.
 	 * Skip MC ucode loading on VF, because hypervisor will do that
@@ -279,6 +276,9 @@ static int gmc_v8_0_mc_load_microcode(struct amdgpu_device *adev)
 	if (amdgpu_sriov_bios(adev))
 		return 0;
 
+	if (!adev->mc.fw)
+		return -EINVAL;
+
 	hdr = (const struct mc_firmware_header_v1_0 *)adev->mc.fw->data;
 	amdgpu_ucode_print_mc_hdr(&hdr->header);
 
@@ -329,6 +329,76 @@ static int gmc_v8_0_mc_load_microcode(struct amdgpu_device *adev)
 	return 0;
 }
 
+static int gmc_v8_0_polaris_mc_load_microcode(struct amdgpu_device *adev)
+{
+	const struct mc_firmware_header_v1_0 *hdr;
+	const __le32 *fw_data = NULL;
+	const __le32 *io_mc_regs = NULL;
+	u32 data, vbios_version;
+	int i, ucode_size, regs_size;
+
+	/* Skip MC ucode loading on SR-IOV capable boards.
+	 * vbios does this for us in asic_init in that case.
+	 * Skip MC ucode loading on VF, because hypervisor will do that
+	 * for this adaptor.
+	 */
+	if (amdgpu_sriov_bios(adev))
+		return 0;
+
+	WREG32(mmMC_SEQ_IO_DEBUG_INDEX, 0x9F);
+	data = RREG32(mmMC_SEQ_IO_DEBUG_DATA);
+	vbios_version = data & 0xf;
+
+	if (vbios_version == 0)
+		return 0;
+
+	if (!adev->mc.fw)
+		return -EINVAL;
+
+	hdr = (const struct mc_firmware_header_v1_0 *)adev->mc.fw->data;
+	amdgpu_ucode_print_mc_hdr(&hdr->header);
+
+	adev->mc.fw_version = le32_to_cpu(hdr->header.ucode_version);
+	regs_size = le32_to_cpu(hdr->io_debug_size_bytes) / (4 * 2);
+	io_mc_regs = (const __le32 *)
+		(adev->mc.fw->data + le32_to_cpu(hdr->io_debug_array_offset_bytes));
+	ucode_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
+	fw_data = (const __le32 *)
+		(adev->mc.fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
+
+	data = RREG32(mmMC_SEQ_MISC0);
+	data &= ~(0x40);
+	WREG32(mmMC_SEQ_MISC0, data);
+
+	/* load mc io regs */
+	for (i = 0; i < regs_size; i++) {
+		WREG32(mmMC_SEQ_IO_DEBUG_INDEX, le32_to_cpup(io_mc_regs++));
+		WREG32(mmMC_SEQ_IO_DEBUG_DATA, le32_to_cpup(io_mc_regs++));
+	}
+
+	WREG32(mmMC_SEQ_SUP_CNTL, 0x00000008);
+	WREG32(mmMC_SEQ_SUP_CNTL, 0x00000010);
+
+	/* load the MC ucode */
+	for (i = 0; i < ucode_size; i++)
+		WREG32(mmMC_SEQ_SUP_PGM, le32_to_cpup(fw_data++));
+
+	/* put the engine back into the active state */
+	WREG32(mmMC_SEQ_SUP_CNTL, 0x00000008);
+	WREG32(mmMC_SEQ_SUP_CNTL, 0x00000004);
+	WREG32(mmMC_SEQ_SUP_CNTL, 0x00000001);
+
+	/* wait for training to complete */
+	for (i = 0; i < adev->usec_timeout; i++) {
+		data = RREG32(mmMC_SEQ_MISC0);
+		if (data & 0x80)
+			break;
+		udelay(1);
+	}
+
+	return 0;
+}
+
 static void gmc_v8_0_vram_gtt_location(struct amdgpu_device *adev,
 				       struct amdgpu_mc *mc)
 {
@@ -1095,7 +1165,15 @@ static int gmc_v8_0_hw_init(void *handle)
 	gmc_v8_0_mc_program(adev);
 
 	if (adev->asic_type == CHIP_TONGA) {
-		r = gmc_v8_0_mc_load_microcode(adev);
+		r = gmc_v8_0_tonga_mc_load_microcode(adev);
+		if (r) {
+			DRM_ERROR("Failed to load MC firmware!\n");
+			return r;
+		}
+	} else if (adev->asic_type == CHIP_POLARIS11 ||
+			adev->asic_type == CHIP_POLARIS10 ||
+			adev->asic_type == CHIP_POLARIS12) {
+		r = gmc_v8_0_polaris_mc_load_microcode(adev);
 		if (r) {
 			DRM_ERROR("Failed to load MC firmware!\n");
 			return r;