| /* |
| * Copyright 2012 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/disp.h> |
| |
| u16 |
| nvbios_disp_table(struct nvkm_bios *bios, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *sub) |
| { |
| struct bit_entry U; |
| |
| if (!bit_entry(bios, 'U', &U)) { |
| if (U.version == 1) { |
| u16 data = nvbios_rd16(bios, U.offset); |
| if (data) { |
| *ver = nvbios_rd08(bios, data + 0x00); |
| switch (*ver) { |
| case 0x20: |
| case 0x21: |
| case 0x22: |
| *hdr = nvbios_rd08(bios, data + 0x01); |
| *len = nvbios_rd08(bios, data + 0x02); |
| *cnt = nvbios_rd08(bios, data + 0x03); |
| *sub = nvbios_rd08(bios, data + 0x04); |
| return data; |
| default: |
| break; |
| } |
| } |
| } |
| } |
| |
| return 0x0000; |
| } |
| |
| u16 |
| nvbios_disp_entry(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len, u8 *sub) |
| { |
| u8 hdr, cnt; |
| u16 data = nvbios_disp_table(bios, ver, &hdr, &cnt, len, sub); |
| if (data && idx < cnt) |
| return data + hdr + (idx * *len); |
| *ver = 0x00; |
| return 0x0000; |
| } |
| |
| u16 |
| nvbios_disp_parse(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len, u8 *sub, |
| struct nvbios_disp *info) |
| { |
| u16 data = nvbios_disp_entry(bios, idx, ver, len, sub); |
| if (data && *len >= 2) { |
| info->data = nvbios_rd16(bios, data + 0); |
| return data; |
| } |
| return 0x0000; |
| } |
| |
| u16 |
| nvbios_outp_entry(struct nvkm_bios *bios, u8 idx, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| { |
| struct nvbios_disp info; |
| u16 data = nvbios_disp_parse(bios, idx, ver, len, hdr, &info); |
| if (data) { |
| *cnt = nvbios_rd08(bios, info.data + 0x05); |
| *len = 0x06; |
| data = info.data; |
| } |
| return data; |
| } |
| |
| u16 |
| nvbios_outp_parse(struct nvkm_bios *bios, u8 idx, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_outp *info) |
| { |
| u16 data = nvbios_outp_entry(bios, idx, ver, hdr, cnt, len); |
| if (data && *hdr >= 0x0a) { |
| info->type = nvbios_rd16(bios, data + 0x00); |
| info->mask = nvbios_rd32(bios, data + 0x02); |
| if (*ver <= 0x20) /* match any link */ |
| info->mask |= 0x00c0; |
| info->script[0] = nvbios_rd16(bios, data + 0x06); |
| info->script[1] = nvbios_rd16(bios, data + 0x08); |
| info->script[2] = 0x0000; |
| if (*hdr >= 0x0c) |
| info->script[2] = nvbios_rd16(bios, data + 0x0a); |
| return data; |
| } |
| return 0x0000; |
| } |
| |
| u16 |
| nvbios_outp_match(struct nvkm_bios *bios, u16 type, u16 mask, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_outp *info) |
| { |
| u16 data, idx = 0; |
| while ((data = nvbios_outp_parse(bios, idx++, ver, hdr, cnt, len, info)) || *ver) { |
| if (data && info->type == type) { |
| if ((info->mask & mask) == mask) |
| break; |
| } |
| } |
| return data; |
| } |
| |
| u16 |
| nvbios_ocfg_entry(struct nvkm_bios *bios, u16 outp, u8 idx, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| { |
| if (idx < *cnt) |
| return outp + *hdr + (idx * *len); |
| return 0x0000; |
| } |
| |
| u16 |
| nvbios_ocfg_parse(struct nvkm_bios *bios, u16 outp, u8 idx, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_ocfg *info) |
| { |
| u16 data = nvbios_ocfg_entry(bios, outp, idx, ver, hdr, cnt, len); |
| if (data) { |
| info->proto = nvbios_rd08(bios, data + 0x00); |
| info->flags = nvbios_rd16(bios, data + 0x01); |
| info->clkcmp[0] = nvbios_rd16(bios, data + 0x02); |
| info->clkcmp[1] = nvbios_rd16(bios, data + 0x04); |
| } |
| return data; |
| } |
| |
| u16 |
| nvbios_ocfg_match(struct nvkm_bios *bios, u16 outp, u8 proto, u8 flags, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_ocfg *info) |
| { |
| u16 data, idx = 0; |
| while ((data = nvbios_ocfg_parse(bios, outp, idx++, ver, hdr, cnt, len, info))) { |
| if ((info->proto == proto || info->proto == 0xff) && |
| (info->flags == flags)) |
| break; |
| } |
| return data; |
| } |
| |
| u16 |
| nvbios_oclk_match(struct nvkm_bios *bios, u16 cmp, u32 khz) |
| { |
| while (cmp) { |
| if (khz / 10 >= nvbios_rd16(bios, cmp + 0x00)) |
| return nvbios_rd16(bios, cmp + 0x02); |
| cmp += 0x04; |
| } |
| return 0x0000; |
| } |
