diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c new file mode 100644 index 000000000..67cb3aeb2 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c @@ -0,0 +1,69 @@ +/* + * 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/pcir.h> + +u32 +nvbios_pcirTe(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr) +{ + u32 data = nvbios_rd16(bios, base + 0x18); + if (data) { + data += base; + switch (nvbios_rd32(bios, data + 0x00)) { + case 0x52494350: /* PCIR */ + case 0x53494752: /* RGIS */ + case 0x5344504e: /* NPDS */ + *hdr = nvbios_rd16(bios, data + 0x0a); + *ver = nvbios_rd08(bios, data + 0x0c); + break; + default: + nvkm_debug(&bios->subdev, + "%08x: PCIR signature (%08x) unknown\n", + data, nvbios_rd32(bios, data + 0x00)); + data = 0; + break; + } + } + return data; +} + +u32 +nvbios_pcirTp(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr, + struct nvbios_pcirT *info) +{ + u32 data = nvbios_pcirTe(bios, base, ver, hdr); + memset(info, 0x00, sizeof(*info)); + if (data) { + info->vendor_id = nvbios_rd16(bios, data + 0x04); + info->device_id = nvbios_rd16(bios, data + 0x06); + info->class_code[0] = nvbios_rd08(bios, data + 0x0d); + info->class_code[1] = nvbios_rd08(bios, data + 0x0e); + info->class_code[2] = nvbios_rd08(bios, data + 0x0f); + info->image_size = nvbios_rd16(bios, data + 0x10) * 512; + info->image_rev = nvbios_rd16(bios, data + 0x12); + info->image_type = nvbios_rd08(bios, data + 0x14); + info->last = nvbios_rd08(bios, data + 0x15) & 0x80; + } + return data; +} |