cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/bios/image.c

/*
 * 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; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs202100.00%10100.00%
Total202100.00%10100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs95100.00%4100.00%
Total95100.00%4100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs310100.00%11100.00%
Total310100.00%11100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.