175 lines
4.7 KiB
C
175 lines
4.7 KiB
C
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/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include <subdev/bios.h>
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#include <subdev/bios/bit.h>
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#include <subdev/bios/disp.h>
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u16
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nvbios_disp_table(struct nvkm_bios *bios,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *sub)
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{
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struct bit_entry U;
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if (!bit_entry(bios, 'U', &U)) {
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if (U.version == 1) {
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u16 data = nvbios_rd16(bios, U.offset);
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if (data) {
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*ver = nvbios_rd08(bios, data + 0x00);
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switch (*ver) {
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case 0x20:
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case 0x21:
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case 0x22:
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*hdr = nvbios_rd08(bios, data + 0x01);
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*len = nvbios_rd08(bios, data + 0x02);
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*cnt = nvbios_rd08(bios, data + 0x03);
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*sub = nvbios_rd08(bios, data + 0x04);
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return data;
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default:
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break;
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}
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}
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}
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}
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return 0x0000;
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}
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u16
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nvbios_disp_entry(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len, u8 *sub)
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{
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u8 hdr, cnt;
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u16 data = nvbios_disp_table(bios, ver, &hdr, &cnt, len, sub);
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if (data && idx < cnt)
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return data + hdr + (idx * *len);
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*ver = 0x00;
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return 0x0000;
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}
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u16
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nvbios_disp_parse(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len, u8 *sub,
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struct nvbios_disp *info)
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{
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u16 data = nvbios_disp_entry(bios, idx, ver, len, sub);
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if (data && *len >= 2) {
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info->data = nvbios_rd16(bios, data + 0);
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return data;
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}
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return 0x0000;
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}
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u16
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nvbios_outp_entry(struct nvkm_bios *bios, u8 idx,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
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{
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struct nvbios_disp info;
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u16 data = nvbios_disp_parse(bios, idx, ver, len, hdr, &info);
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if (data) {
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*cnt = nvbios_rd08(bios, info.data + 0x05);
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*len = 0x06;
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data = info.data;
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}
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return data;
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}
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u16
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nvbios_outp_parse(struct nvkm_bios *bios, u8 idx,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_outp *info)
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{
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u16 data = nvbios_outp_entry(bios, idx, ver, hdr, cnt, len);
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if (data && *hdr >= 0x0a) {
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info->type = nvbios_rd16(bios, data + 0x00);
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info->mask = nvbios_rd32(bios, data + 0x02);
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if (*ver <= 0x20) /* match any link */
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info->mask |= 0x00c0;
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info->script[0] = nvbios_rd16(bios, data + 0x06);
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info->script[1] = nvbios_rd16(bios, data + 0x08);
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info->script[2] = 0x0000;
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if (*hdr >= 0x0c)
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info->script[2] = nvbios_rd16(bios, data + 0x0a);
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return data;
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}
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return 0x0000;
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}
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u16
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nvbios_outp_match(struct nvkm_bios *bios, u16 type, u16 mask,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_outp *info)
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{
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u16 data, idx = 0;
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while ((data = nvbios_outp_parse(bios, idx++, ver, hdr, cnt, len, info)) || *ver) {
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if (data && info->type == type) {
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if ((info->mask & mask) == mask)
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break;
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}
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}
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return data;
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}
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u16
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nvbios_ocfg_entry(struct nvkm_bios *bios, u16 outp, u8 idx,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
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{
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if (idx < *cnt)
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return outp + *hdr + (idx * *len);
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return 0x0000;
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}
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u16
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nvbios_ocfg_parse(struct nvkm_bios *bios, u16 outp, u8 idx,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_ocfg *info)
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{
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u16 data = nvbios_ocfg_entry(bios, outp, idx, ver, hdr, cnt, len);
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if (data) {
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info->proto = nvbios_rd08(bios, data + 0x00);
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info->flags = nvbios_rd16(bios, data + 0x01);
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info->clkcmp[0] = nvbios_rd16(bios, data + 0x02);
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info->clkcmp[1] = nvbios_rd16(bios, data + 0x04);
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}
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return data;
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}
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u16
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nvbios_ocfg_match(struct nvkm_bios *bios, u16 outp, u8 proto, u8 flags,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_ocfg *info)
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{
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u16 data, idx = 0;
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while ((data = nvbios_ocfg_parse(bios, outp, idx++, ver, hdr, cnt, len, info))) {
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if ((info->proto == proto || info->proto == 0xff) &&
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(info->flags == flags))
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break;
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}
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return data;
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}
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u16
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nvbios_oclk_match(struct nvkm_bios *bios, u16 cmp, u32 khz)
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{
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while (cmp) {
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if (khz / 10 >= nvbios_rd16(bios, cmp + 0x00))
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return nvbios_rd16(bios, cmp + 0x02);
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cmp += 0x04;
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}
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return 0x0000;
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}
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