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drm/nouveau/core: support versioned firmware loading 

We have a need for this now with updated SEC2 LS FW images that have an
incompatible interface from the previous version.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2019-05-22 16:15:54 +10:00
parent 8854eed1a4
commit 475cf02b83
2 changed files with 31 additions and 6 deletions
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7
drivers/gpu/drm/nouveau/include/nvkm/core/firmware.h
View File

@ -3,7 +3,10 @@
#define __NVKM_FIRMWARE_H__
#include <core/subdev.h>
int nvkm_firmware_get_version(const struct nvkm_subdev *, const char *fwname,
int min_version, int max_version,
const struct firmware **);
int nvkm_firmware_get(const struct nvkm_subdev *, const char *fwname,
const struct firmware **fw);
void nvkm_firmware_put(const struct firmware *fw);
const struct firmware **);
void nvkm_firmware_put(const struct firmware *);
#endif

30
drivers/gpu/drm/nouveau/nvkm/core/firmware.c
View File

@ -32,8 +32,9 @@
* Firmware files released by NVIDIA will always follow this format.
*/
int
nvkm_firmware_get(const struct nvkm_subdev *subdev, const char *fwname,
const struct firmware **fw)
nvkm_firmware_get_version(const struct nvkm_subdev *subdev, const char *fwname,
int min_version, int max_version,
const struct firmware **fw)
{
struct nvkm_device *device = subdev->device;
char f[64];
@ -49,8 +50,29 @@ nvkm_firmware_get(const struct nvkm_subdev *subdev, const char *fwname,
cname[i] = tolower(cname[i]);
}
snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname);
return request_firmware(fw, f, device->dev);
for (i = max_version; i >= min_version; i--) {
if (i != 0)
snprintf(f, sizeof(f), "nvidia/%s/%s-%d.bin", cname, fwname, i);
else
snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname);
if (!firmware_request_nowarn(fw, f, device->dev)) {
nvkm_debug(subdev, "firmware \"%s\" loaded\n", f);
return i;
}
nvkm_debug(subdev, "firmware \"%s\" unavailable\n", f);
}
nvkm_error(subdev, "failed to load firmware \"%s\"", fwname);
return -ENOENT;
}
int
nvkm_firmware_get(const struct nvkm_subdev *subdev, const char *fwname,
const struct firmware **fw)
{
return nvkm_firmware_get_version(subdev, fwname, 0, 0, fw);
}
/**