diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/P0260.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/P0260.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/P0260.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/P0260.c new file mode 100644 index 000000000000..b72edcf849b6 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/P0260.c @@ -0,0 +1,107 @@ +/* + * Copyright 2013 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 + */ +#include <subdev/bios.h> +#include <subdev/bios/bit.h> +#include <subdev/bios/P0260.h> + +u32 +nvbios_P0260Te(struct nvkm_bios *bios, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *xnr, u8 *xsz) +{ + struct bit_entry bit_P; + u32 data = 0x00000000; + + if (!bit_entry(bios, 'P', &bit_P)) { + if (bit_P.version == 2 && bit_P.length > 0x63) + data = nv_ro32(bios, bit_P.offset + 0x60); + if (data) { + *ver = nv_ro08(bios, data + 0); + switch (*ver) { + case 0x10: + *hdr = nv_ro08(bios, data + 1); + *cnt = nv_ro08(bios, data + 2); + *len = 4; + *xnr = nv_ro08(bios, data + 3); + *xsz = 4; + return data; + default: + break; + } + } + } + + return 0x00000000; +} + +u32 +nvbios_P0260Ee(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len) +{ + u8 hdr, cnt, xnr, xsz; + u32 data = nvbios_P0260Te(bios, ver, &hdr, &cnt, len, &xnr, &xsz); + if (data && idx < cnt) + return data + hdr + (idx * *len); + return 0x00000000; +} + +u32 +nvbios_P0260Ep(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len, + struct nvbios_P0260E *info) +{ + u32 data = nvbios_P0260Ee(bios, idx, ver, len); + memset(info, 0x00, sizeof(*info)); + switch (!!data * *ver) { + case 0x10: + info->data = nv_ro32(bios, data); + return data; + default: + break; + } + return 0x00000000; +} + +u32 +nvbios_P0260Xe(struct nvkm_bios *bios, int idx, u8 *ver, u8 *xsz) +{ + u8 hdr, cnt, len, xnr; + u32 data = nvbios_P0260Te(bios, ver, &hdr, &cnt, &len, &xnr, xsz); + if (data && idx < xnr) + return data + hdr + (cnt * len) + (idx * *xsz); + return 0x00000000; +} + +u32 +nvbios_P0260Xp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr, + struct nvbios_P0260X *info) +{ + u32 data = nvbios_P0260Xe(bios, idx, ver, hdr); + memset(info, 0x00, sizeof(*info)); + switch (!!data * *ver) { + case 0x10: + info->data = nv_ro32(bios, data); + return data; + default: + break; + } + return 0x00000000; +} |