On 19 June 2015 at 00:47, Alexandre Courbot <gnurou@xxxxxxxxx> wrote:
> NVIDIA will officially start providing signed firmwares through
> linux-firmware. Change the GR firmware lookup function to look them up
> in addition to the extracted firmwares.
I wonder if perhaps we should just replace the mechanism entirely, and
remove the support for nouveau/fuc* as we add "official" support for
NVIDIA's ucode. The existing code is actually partially broken
anyway, and mostly works by luck and was intended as a development aid
/ workaround anyway. There are no chipsets (aside from GM2xx...)
which we don't currently support using our own ucode, so the impact of
removing it will be very minimal.
Thoughts?
Ben.
>
> Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
> ---
> drm/nouveau/nvkm/engine/gr/gf100.c | 66 +++++++++++++++++++++++++++++---------
> 1 file changed, 51 insertions(+), 15 deletions(-)
>
> diff --git a/drm/nouveau/nvkm/engine/gr/gf100.c b/drm/nouveau/nvkm/engine/gr/gf100.c
> index ca11ddb..39d482f 100644
> --- a/drm/nouveau/nvkm/engine/gr/gf100.c
> +++ b/drm/nouveau/nvkm/engine/gr/gf100.c
> @@ -1544,26 +1544,62 @@ gf100_gr_dtor_fw(struct gf100_gr_fuc *fuc)
> fuc->data = NULL;
> }
>
> +/**
> + * gf100_gr_ctor_fw - helper for loading external GR firmwares
> + *
> + * A firmware can either be officially provided by NVIDIA (in which case it will
> + * use a "NVIDIA name", or be extracted from the binary blob (and use a
> + * "Nouveau name". The fwname and nvfwname are to be given the Nouveau and
> + * NVIDIA names of a given firmware, respectively. This function will then
> + * try to load the NVIDIA firmware, then the extracted one, in that order.
> + *
> + */
> int
> gf100_gr_ctor_fw(struct gf100_gr_priv *priv, const char *fwname,
> - struct gf100_gr_fuc *fuc)
> + const char *nvfwname, struct gf100_gr_fuc *fuc)
> {
> struct nvkm_device *device = nv_device(priv);
> const struct firmware *fw;
> - char f[32];
> - int ret;
> + char f[64];
> + int ret = -EINVAL;
> + int i;
>
> - snprintf(f, sizeof(f), "nouveau/nv%02x_%s", device->chipset, fwname);
> - ret = request_firmware(&fw, f, nv_device_base(device));
> - if (ret) {
> - snprintf(f, sizeof(f), "nouveau/%s", fwname);
> - ret = request_firmware(&fw, f, nv_device_base(device));
> - if (ret) {
> - nv_error(priv, "failed to load %s\n", fwname);
> - return ret;
> + /*
> + * NVIDIA firmware name provided - try to load it
> + * We try this first since most chips that require external firmware
> + * are supported by NVIDIA
> + */
> + if (nvfwname) {
> + snprintf(f, sizeof(f), "nvidia/%s/%s.bin", device->cname,
> + nvfwname);
> + i = strlen(f);
> + while (i) {
> + --i;
> + f[i] = tolower(f[i]);
> }
> + ret = request_firmware_direct(&fw, f, nv_device_base(device));
> + if (!ret)
> + goto found;
> + }
> +
> + /* Nouveau firmware name provided - try to load it */
> + if (fwname) {
> + snprintf(f, sizeof(f), "nouveau/nv%02x_%s", device->chipset,
> + fwname);
> + ret = request_firmware_direct(&fw, f, nv_device_base(device));
> + if (!ret)
> + goto found;
> +
> + snprintf(f, sizeof(f), "nouveau/%s", fwname);
> + ret = request_firmware_direct(&fw, f, nv_device_base(device));
> + if (!ret)
> + goto found;
> }
>
> + nv_error(priv, "failed to load %s / %s\n", fwname, nvfwname);
> + return ret;
> +
> +found:
> fuc->size = fw->size;
> fuc->data = kmemdup(fw->data, fuc->size, GFP_KERNEL);
> release_firmware(fw);
> @@ -1615,10 +1651,10 @@ gf100_gr_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
>
> if (use_ext_fw) {
> nv_info(priv, "using external firmware\n");
> - if (gf100_gr_ctor_fw(priv, "fuc409c", &priv->fuc409c) ||
> - gf100_gr_ctor_fw(priv, "fuc409d", &priv->fuc409d) ||
> - gf100_gr_ctor_fw(priv, "fuc41ac", &priv->fuc41ac) ||
> - gf100_gr_ctor_fw(priv, "fuc41ad", &priv->fuc41ad))
> + if (gf100_gr_ctor_fw(priv, "fuc409c", "fecs_inst", &priv->fuc409c) ||
> + gf100_gr_ctor_fw(priv, "fuc409d", "fecs_data", &priv->fuc409d) ||
> + gf100_gr_ctor_fw(priv, "fuc41ac", "gpccs_inst", &priv->fuc41ac) ||
> + gf100_gr_ctor_fw(priv, "fuc41ad", "gpccs_data", &priv->fuc41ad))
> return -ENODEV;
> priv->firmware = true;
> }
> --
> 2.4.3
>
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