[PATCH 4/8] drm/amdgpu: add helper function to init asd ucode

[Hawking Zhang]

asd is unified ucode across asic. it is not necessary
to keep its software structure to be ip specific one

Signed-off-by: Hawking Zhang <Hawking.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 36 +++++++++++++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h |  2 ++
 2 files changed, 38 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 7797065..3656068 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -1840,6 +1840,42 @@ int psp_ring_cmd_submit(struct psp_context *psp,
 	return 0;
 }
 
+int psp_init_asd_microcode(struct psp_context *psp,
+			   const char *chip_name)
+{
+	struct amdgpu_device *adev = psp->adev;
+	char fw_name[30];
+	const struct psp_firmware_header_v1_0 *asd_hdr;
+	int err = 0;
+
+	if (!chip_name) {
+		dev_err(adev->dev, "invalid chip name for asd microcode\n");
+		return -EINVAL;
+	}
+
+	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_asd.bin", chip_name);
+	err = request_firmware(&adev->psp.asd_fw, fw_name, adev->dev);
+	if (err)
+		goto out;
+
+	err = amdgpu_ucode_validate(adev->psp.asd_fw);
+	if (err)
+		goto out;
+
+	asd_hdr = (const struct psp_firmware_header_v1_0 *)adev->psp.asd_fw->data;
+	adev->psp.asd_fw_version = le32_to_cpu(asd_hdr->header.ucode_version);
+	adev->psp.asd_feature_version = le32_to_cpu(asd_hdr->ucode_feature_version);
+	adev->psp.asd_ucode_size = le32_to_cpu(asd_hdr->header.ucode_size_bytes);
+	adev->psp.asd_start_addr = (uint8_t *)asd_hdr +
+				le32_to_cpu(asd_hdr->header.ucode_array_offset_bytes);
+	return 0;
+out:
+	dev_err(adev->dev, "fail to initialize asd microcode\n");
+	release_firmware(adev->psp.asd_fw);
+	adev->psp.asd_fw = NULL;
+	return err;
+}
+
 static int psp_set_clockgating_state(void *handle,
 				     enum amd_clockgating_state state)
 {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
index f8b1f03..a763148 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
@@ -385,4 +385,6 @@ int psp_ring_cmd_submit(struct psp_context *psp,
 			uint64_t cmd_buf_mc_addr,
 			uint64_t fence_mc_addr,
 			int index);
+int psp_init_asd_microcode(struct psp_context *psp,
+			   const char *chip_name);
 #endif
-- 
2.7.4