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drm/nouveau/gr: fallback to legacy paths during firmware lookup 

Look for firmware files using the legacy ("nouveau/nvxx_fucxxxx") path
if they cannot be found in the new, "official" path. User setups were
broken by the switch, which is bad.

There are only 4 firmware files we may want to look up that way, so
hardcode them into the lookup function. All new firmware files should
use the standard "nvidia/<chip>/gr/" path.

Fixes: 8539b37ace ("drm/nouveau/gr: use NVIDIA-provided external firmwares")
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alexandre Courbot 2016-11-04 18:36:17 +09:00 committed by Ben Skeggs
parent f479c0ba4a
commit e137040e0d
1 changed files with 46 additions and 4 deletions
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50
drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
View File

@ -1755,6 +1755,50 @@ gf100_gr_ = {
.object_get = gf100_gr_object_get,
};
int
gf100_gr_ctor_fw_legacy(struct gf100_gr *gr, const char *fwname,
struct gf100_gr_fuc *fuc, int ret)
{
struct nvkm_subdev *subdev = &gr->base.engine.subdev;
struct nvkm_device *device = subdev->device;
const struct firmware *fw;
char f[32];
/* see if this firmware has a legacy path */
if (!strcmp(fwname, "fecs_inst"))
fwname = "fuc409c";
else if (!strcmp(fwname, "fecs_data"))
fwname = "fuc409d";
else if (!strcmp(fwname, "gpccs_inst"))
fwname = "fuc41ac";
else if (!strcmp(fwname, "gpccs_data"))
fwname = "fuc41ad";
else {
/* nope, let's just return the error we got */
nvkm_error(subdev, "failed to load %s\n", fwname);
return ret;
}
/* yes, try to load from the legacy path */
nvkm_debug(subdev, "%s: falling back to legacy path\n", fwname);
snprintf(f, sizeof(f), "nouveau/nv%02x_%s", device->chipset, fwname);
ret = request_firmware(&fw, f, device->dev);
if (ret) {
snprintf(f, sizeof(f), "nouveau/%s", fwname);
ret = request_firmware(&fw, f, device->dev);
if (ret) {
nvkm_error(subdev, "failed to load %s\n", fwname);
return ret;
}
}
fuc->size = fw->size;
fuc->data = kmemdup(fw->data, fuc->size, GFP_KERNEL);
release_firmware(fw);
return (fuc->data != NULL) ? 0 : -ENOMEM;
}
int
gf100_gr_ctor_fw(struct gf100_gr *gr, const char *fwname,
struct gf100_gr_fuc *fuc)
@ -1765,10 +1809,8 @@ gf100_gr_ctor_fw(struct gf100_gr *gr, const char *fwname,
int ret;
ret = nvkm_firmware_get(device, fwname, &fw);
if (ret) {
nvkm_error(subdev, "failed to load %s\n", fwname);
return ret;
}
if (ret)
return gf100_gr_ctor_fw_legacy(gr, fwname, fuc, ret);
fuc->size = fw->size;
fuc->data = kmemdup(fw->data, fuc->size, GFP_KERNEL);