233 lines
6.2 KiB
C
233 lines
6.2 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/dp.h>
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u16
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nvbios_dp_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
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{
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struct bit_entry d;
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if (!bit_entry(bios, 'd', &d)) {
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if (d.version == 1 && d.length >= 2) {
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u16 data = nvbios_rd16(bios, d.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 0x30:
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case 0x40:
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case 0x41:
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case 0x42:
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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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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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static u16
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nvbios_dpout_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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u16 data = nvbios_dp_table(bios, ver, hdr, cnt, len);
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if (data && idx < *cnt) {
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u16 outp = nvbios_rd16(bios, data + *hdr + idx * *len);
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switch (*ver * !!outp) {
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case 0x20:
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case 0x21:
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case 0x30:
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*hdr = nvbios_rd08(bios, data + 0x04);
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*len = nvbios_rd08(bios, data + 0x05);
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*cnt = nvbios_rd08(bios, outp + 0x04);
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break;
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case 0x40:
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case 0x41:
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case 0x42:
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*hdr = nvbios_rd08(bios, data + 0x04);
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*cnt = 0;
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*len = 0;
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break;
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default:
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break;
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}
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return outp;
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}
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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_dpout_parse(struct nvkm_bios *bios, u8 idx,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
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struct nvbios_dpout *info)
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{
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u16 data = nvbios_dpout_entry(bios, idx, ver, hdr, cnt, len);
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memset(info, 0x00, sizeof(*info));
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if (data && *ver) {
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info->type = nvbios_rd16(bios, data + 0x00);
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info->mask = nvbios_rd16(bios, data + 0x02);
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switch (*ver) {
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case 0x20:
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info->mask |= 0x00c0; /* match any link */
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fallthrough;
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case 0x21:
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case 0x30:
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info->flags = nvbios_rd08(bios, data + 0x05);
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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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if (*len >= 0x0c)
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info->lnkcmp = nvbios_rd16(bios, data + 0x0a);
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if (*len >= 0x0f) {
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info->script[2] = nvbios_rd16(bios, data + 0x0c);
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info->script[3] = nvbios_rd16(bios, data + 0x0e);
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}
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if (*len >= 0x11)
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info->script[4] = nvbios_rd16(bios, data + 0x10);
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break;
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case 0x40:
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case 0x41:
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case 0x42:
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info->flags = nvbios_rd08(bios, data + 0x04);
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info->script[0] = nvbios_rd16(bios, data + 0x05);
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info->script[1] = nvbios_rd16(bios, data + 0x07);
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info->lnkcmp = nvbios_rd16(bios, data + 0x09);
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info->script[2] = nvbios_rd16(bios, data + 0x0b);
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info->script[3] = nvbios_rd16(bios, data + 0x0d);
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info->script[4] = nvbios_rd16(bios, data + 0x0f);
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break;
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default:
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data = 0x0000;
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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_dpout_match(struct nvkm_bios *bios, u16 type, u16 mask,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
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struct nvbios_dpout *info)
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{
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u16 data, idx = 0;
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while ((data = nvbios_dpout_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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static u16
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nvbios_dpcfg_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 (*ver >= 0x40) {
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outp = nvbios_dp_table(bios, ver, hdr, cnt, len);
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*hdr = *hdr + (*len * * cnt);
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*len = nvbios_rd08(bios, outp + 0x06);
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*cnt = nvbios_rd08(bios, outp + 0x07) *
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nvbios_rd08(bios, outp + 0x05);
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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_dpcfg_parse(struct nvkm_bios *bios, u16 outp, u8 idx,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
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struct nvbios_dpcfg *info)
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{
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u16 data = nvbios_dpcfg_entry(bios, outp, idx, ver, hdr, cnt, len);
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memset(info, 0x00, sizeof(*info));
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if (data) {
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switch (*ver) {
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case 0x20:
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case 0x21:
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info->dc = nvbios_rd08(bios, data + 0x02);
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info->pe = nvbios_rd08(bios, data + 0x03);
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info->tx_pu = nvbios_rd08(bios, data + 0x04);
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break;
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case 0x30:
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case 0x40:
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case 0x41:
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info->pc = nvbios_rd08(bios, data + 0x00);
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info->dc = nvbios_rd08(bios, data + 0x01);
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info->pe = nvbios_rd08(bios, data + 0x02);
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info->tx_pu = nvbios_rd08(bios, data + 0x03);
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break;
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case 0x42:
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info->dc = nvbios_rd08(bios, data + 0x00);
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info->pe = nvbios_rd08(bios, data + 0x01);
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info->tx_pu = nvbios_rd08(bios, data + 0x02);
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break;
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default:
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data = 0x0000;
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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_dpcfg_match(struct nvkm_bios *bios, u16 outp, u8 pc, u8 vs, u8 pe,
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u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
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struct nvbios_dpcfg *info)
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{
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u8 idx = 0xff;
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u16 data;
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if (*ver >= 0x30) {
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static const u8 vsoff[] = { 0, 4, 7, 9 };
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idx = (pc * 10) + vsoff[vs] + pe;
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if (*ver >= 0x40 && *ver <= 0x41 && *hdr >= 0x12)
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idx += nvbios_rd08(bios, outp + 0x11) * 40;
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else
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if (*ver >= 0x42)
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idx += nvbios_rd08(bios, outp + 0x11) * 10;
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} else {
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while ((data = nvbios_dpcfg_entry(bios, outp, ++idx,
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ver, hdr, cnt, len))) {
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if (nvbios_rd08(bios, data + 0x00) == vs &&
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nvbios_rd08(bios, data + 0x01) == pe)
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break;
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}
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}
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return nvbios_dpcfg_parse(bios, outp, idx, ver, hdr, cnt, len, info);
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}
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