drm/amdgpu: fix missed gpu info firmware when cache firmware during S3

gpu_info firmware is released after data is used. But when system enters into
suspend, upper class driver will cache all firmware names. At that time,
gpu_info will be failing to load. It seems an upper class issue, that we should
not release gpu_info firmware until device finished.

[  903.236589] cache_firmware: amdgpu/vega10_sdma1.bin
[  903.236590] fw_set_page_data: fw-amdgpu/vega10_sdma1.bin buf=ffff88041eee10c0 data=ffffc90002561000 size=17408
[  903.236591] cache_firmware: amdgpu/vega10_sdma1.bin ret=0
[  903.464160] __allocate_fw_buf: fw-amdgpu/vega10_gpu_info.bin buf=ffff88041eee2c00
[  903.471815] (NULL device *): loading /lib/firmware/updates/4.11.0-custom/amdgpu/vega10_gpu_info.bin failed with error -2
[  903.482870] (NULL device *): loading /lib/firmware/updates/amdgpu/vega10_gpu_info.bin failed with error -2
[  903.492716] (NULL device *): loading /lib/firmware/4.11.0-custom/amdgpu/vega10_gpu_info.bin failed with error -2
[  903.503156] (NULL device *): direct-loading amdgpu/vega10_gpu_info.bin

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

2 files changed, 13 insertions, 8 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index c26761f0e05e..fc7e8a36df04 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1271,6 +1271,9 @@ struct amdgpu_firmware {
         const struct amdgpu_psp_funcs *funcs;
         struct amdgpu_bo *rbuf;
         struct mutex mutex;
+
+        /* gpu info firmware data pointer */
+        const struct firmware *gpu_info_fw;
 };
 
 /*
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index f5c4e2e5c4ad..875cde414be7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1403,12 +1403,13 @@ static void amdgpu_device_enable_virtual_display(struct amdgpu_device *adev)
 
 static int amdgpu_device_parse_gpu_info_fw(struct amdgpu_device *adev)
 {
-        const struct firmware *fw;
         const char *chip_name;
         char fw_name[30];
         int err;
         const struct gpu_info_firmware_header_v1_0 *hdr;
 
+        adev->firmware.gpu_info_fw = NULL;
+
         switch (adev->asic_type) {
         case CHIP_TOPAZ:
         case CHIP_TONGA:
@@ -1443,14 +1444,14 @@ static int amdgpu_device_parse_gpu_info_fw(struct amdgpu_device *adev)
         }
 
         snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_gpu_info.bin", chip_name);
-        err = request_firmware(&fw, fw_name, adev->dev);
+        err = request_firmware(&adev->firmware.gpu_info_fw, fw_name, adev->dev);
         if (err) {
                 dev_err(adev->dev,
                         "Failed to load gpu_info firmware \"%s\"\n",
                         fw_name);
                 goto out;
         }
-        err = amdgpu_ucode_validate(fw);
+        err = amdgpu_ucode_validate(adev->firmware.gpu_info_fw);
         if (err) {
                 dev_err(adev->dev,
                         "Failed to validate gpu_info firmware \"%s\"\n",
@@ -1458,14 +1459,14 @@ static int amdgpu_device_parse_gpu_info_fw(struct amdgpu_device *adev)
                 goto out;
         }
 
-        hdr = (const struct gpu_info_firmware_header_v1_0 *)fw->data;
+        hdr = (const struct gpu_info_firmware_header_v1_0 *)adev->firmware.gpu_info_fw->data;
         amdgpu_ucode_print_gpu_info_hdr(&hdr->header);
 
         switch (hdr->version_major) {
         case 1:
         {
                 const struct gpu_info_firmware_v1_0 *gpu_info_fw =
-                        (const struct gpu_info_firmware_v1_0 *)(fw->data +
+                        (const struct gpu_info_firmware_v1_0 *)(adev->firmware.gpu_info_fw->data +
                                                                 le32_to_cpu(hdr->header.ucode_array_offset_bytes));
 
                 adev->gfx.config.max_shader_engines = le32_to_cpu(gpu_info_fw->gc_num_se);
@@ -1495,9 +1496,6 @@ static int amdgpu_device_parse_gpu_info_fw(struct amdgpu_device *adev)
                 goto out;
         }
 out:
-        release_firmware(fw);
-        fw = NULL;
-
         return err;
 }
 
@@ -2288,6 +2286,10 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
         amdgpu_fence_driver_fini(adev);
         amdgpu_fbdev_fini(adev);
         r = amdgpu_fini(adev);
+        if (adev->firmware.gpu_info_fw) {
+                release_firmware(adev->firmware.gpu_info_fw);
+                adev->firmware.gpu_info_fw = NULL;
+        }
         adev->accel_working = false;
         cancel_delayed_work_sync(&adev->late_init_work);
         /* free i2c buses */