diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/M0209.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/M0209.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/M0209.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/M0209.c new file mode 100644 index 000000000000..3026920c3358 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/M0209.c @@ -0,0 +1,135 @@ +/* + * 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/M0209.h> + +u32 +nvbios_M0209Te(struct nvkm_bios *bios, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz) +{ + struct bit_entry bit_M; + u32 data = 0x00000000; + + if (!bit_entry(bios, 'M', &bit_M)) { + if (bit_M.version == 2 && bit_M.length > 0x0c) + data = nv_ro32(bios, bit_M.offset + 0x09); + if (data) { + *ver = nv_ro08(bios, data + 0x00); + switch (*ver) { + case 0x10: + *hdr = nv_ro08(bios, data + 0x01); + *len = nv_ro08(bios, data + 0x02); + *ssz = nv_ro08(bios, data + 0x03); + *snr = 1; + *cnt = nv_ro08(bios, data + 0x04); + return data; + default: + break; + } + } + } + + return 0x00000000; +} + +u32 +nvbios_M0209Ee(struct nvkm_bios *bios, int idx, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len) +{ + u8 snr, ssz; + u32 data = nvbios_M0209Te(bios, ver, hdr, cnt, len, &snr, &ssz); + if (data && idx < *cnt) { + data = data + *hdr + idx * (*len + (snr * ssz)); + *hdr = *len; + *cnt = snr; + *len = ssz; + return data; + } + return 0x00000000; +} + +u32 +nvbios_M0209Ep(struct nvkm_bios *bios, int idx, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_M0209E *info) +{ + u32 data = nvbios_M0209Ee(bios, idx, ver, hdr, cnt, len); + memset(info, 0x00, sizeof(*info)); + switch (!!data * *ver) { + case 0x10: + info->v00_40 = (nv_ro08(bios, data + 0x00) & 0x40) >> 6; + info->bits = nv_ro08(bios, data + 0x00) & 0x3f; + info->modulo = nv_ro08(bios, data + 0x01); + info->v02_40 = (nv_ro08(bios, data + 0x02) & 0x40) >> 6; + info->v02_07 = nv_ro08(bios, data + 0x02) & 0x07; + info->v03 = nv_ro08(bios, data + 0x03); + return data; + default: + break; + } + return 0x00000000; +} + +u32 +nvbios_M0209Se(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr) +{ + + u8 cnt, len; + u32 data = nvbios_M0209Ee(bios, ent, ver, hdr, &cnt, &len); + if (data && idx < cnt) { + data = data + *hdr + idx * len; + *hdr = len; + return data; + } + return 0x00000000; +} + +u32 +nvbios_M0209Sp(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr, + struct nvbios_M0209S *info) +{ + struct nvbios_M0209E M0209E; + u8 cnt, len; + u32 data = nvbios_M0209Ep(bios, ent, ver, hdr, &cnt, &len, &M0209E); + if (data) { + u32 i, data = nvbios_M0209Se(bios, ent, idx, ver, hdr); + memset(info, 0x00, sizeof(*info)); + switch (!!data * *ver) { + case 0x10: + for (i = 0; i < ARRAY_SIZE(info->data); i++) { + u32 bits = (i % M0209E.modulo) * M0209E.bits; + u32 mask = (1ULL << M0209E.bits) - 1; + u16 off = bits / 8; + u8 mod = bits % 8; + info->data[i] = nv_ro32(bios, data + off); + info->data[i] = info->data[i] >> mod; + info->data[i] = info->data[i] & mask; + } + return data; + default: + break; + } + } + return 0x00000000; +} |