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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/bios/image.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/image.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/image.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/image.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/image.c new file mode 100644 index 000000000..1dbff7aea --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/image.c @@ -0,0 +1,83 @@ +/* + * Copyright 2014 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs <bskeggs@redhat.com> + */ +#include <subdev/bios.h> +#include <subdev/bios/image.h> +#include <subdev/bios/pcir.h> +#include <subdev/bios/npde.h> + +static bool +nvbios_imagen(struct nvkm_bios *bios, struct nvbios_image *image) +{ + struct nvkm_subdev *subdev = &bios->subdev; + struct nvbios_pcirT pcir; + struct nvbios_npdeT npde; + u8 ver; + u16 hdr; + u32 data; + + switch ((data = nvbios_rd16(bios, image->base + 0x00))) { + case 0xaa55: + case 0xbb77: + case 0x4e56: /* NV */ + break; + default: + nvkm_debug(subdev, "%08x: ROM signature (%04x) unknown\n", + image->base, data); + return false; + } + + if (!(data = nvbios_pcirTp(bios, image->base, &ver, &hdr, &pcir))) + return false; + image->size = pcir.image_size; + image->type = pcir.image_type; + image->last = pcir.last; + + if (image->type != 0x70) { + if (!(data = nvbios_npdeTp(bios, image->base, &npde))) + return true; + image->size = npde.image_size; + image->last = npde.last; + } else { + image->last = true; + } + + return true; +} + +bool +nvbios_image(struct nvkm_bios *bios, int idx, struct nvbios_image *image) +{ + u32 imaged_addr = bios->imaged_addr; + memset(image, 0x00, sizeof(*image)); + bios->imaged_addr = 0; + do { + image->base += image->size; + if (image->last || !nvbios_imagen(bios, image)) { + bios->imaged_addr = imaged_addr; + return false; + } + } while(idx--); + bios->imaged_addr = imaged_addr; + return true; +} |