drm/amdgpu: add TOC firmware support for apu (v3)

APU needs load toc firmware for gfx10 series on psp front door loading.

v2: rebase against latest code
v3: clarify error message

Signed-off-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 18be544d8c1e..62ae7b4ff275 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -2415,6 +2415,42 @@ out:
 	return err;
 }
 
+int psp_init_toc_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 *toc_hdr;
+	int err = 0;
+
+	if (!chip_name) {
+		dev_err(adev->dev, "invalid chip name for toc microcode\n");
+		return -EINVAL;
+	}
+
+	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_toc.bin", chip_name);
+	err = request_firmware(&adev->psp.toc_fw, fw_name, adev->dev);
+	if (err)
+		goto out;
+
+	err = amdgpu_ucode_validate(adev->psp.toc_fw);
+	if (err)
+		goto out;
+
+	toc_hdr = (const struct psp_firmware_header_v1_0 *)adev->psp.toc_fw->data;
+	adev->psp.toc_fw_version = le32_to_cpu(toc_hdr->header.ucode_version);
+	adev->psp.toc_feature_version = le32_to_cpu(toc_hdr->ucode_feature_version);
+	adev->psp.toc_bin_size = le32_to_cpu(toc_hdr->header.ucode_size_bytes);
+	adev->psp.toc_start_addr = (uint8_t *)toc_hdr +
+				le32_to_cpu(toc_hdr->header.ucode_array_offset_bytes);
+	return 0;
+out:
+	dev_err(adev->dev, "fail to request/validate toc microcode\n");
+	release_firmware(adev->psp.toc_fw);
+	adev->psp.toc_fw = NULL;
+	return err;
+}
+
 int psp_init_sos_microcode(struct psp_context *psp,
 			   const char *chip_name)
 {