diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/npde.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/npde.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/npde.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/npde.c new file mode 100644 index 000000000000..fd7dd718b2bf --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/npde.c @@ -0,0 +1,58 @@ +/* + * 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/npde.h> +#include <subdev/bios/pcir.h> + +u32 +nvbios_npdeTe(struct nvkm_bios *bios, u32 base) +{ + struct nvbios_pcirT pcir; + u8 ver; u16 hdr; + u32 data = nvbios_pcirTp(bios, base, &ver, &hdr, &pcir); + if (data = (data + hdr + 0x0f) & ~0x0f, data) { + switch (nv_ro32(bios, data + 0x00)) { + case 0x4544504e: /* NPDE */ + break; + default: + nv_debug(bios, "%08x: NPDE signature (%08x) unknown\n", + data, nv_ro32(bios, data + 0x00)); + data = 0; + break; + } + } + return data; +} + +u32 +nvbios_npdeTp(struct nvkm_bios *bios, u32 base, struct nvbios_npdeT *info) +{ + u32 data = nvbios_npdeTe(bios, base); + memset(info, 0x00, sizeof(*info)); + if (data) { + info->image_size = nv_ro16(bios, data + 0x08) * 512; + info->last = nv_ro08(bios, data + 0x0a) & 0x80; + } + return data; +} |