122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
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/*
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* Copyright 2012 Nouveau Community
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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: Martin Peres
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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/vmap.h>
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u32
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nvbios_vmap_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
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{
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struct bit_entry bit_P;
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u32 vmap = 0;
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if (!bit_entry(bios, 'P', &bit_P)) {
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if (bit_P.version == 2) {
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vmap = nvbios_rd32(bios, bit_P.offset + 0x20);
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if (vmap) {
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*ver = nvbios_rd08(bios, vmap + 0);
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switch (*ver) {
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case 0x10:
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case 0x20:
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*hdr = nvbios_rd08(bios, vmap + 1);
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*cnt = nvbios_rd08(bios, vmap + 3);
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*len = nvbios_rd08(bios, vmap + 2);
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return vmap;
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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 0;
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}
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u32
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nvbios_vmap_parse(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
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struct nvbios_vmap *info)
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{
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u32 vmap = nvbios_vmap_table(bios, ver, hdr, cnt, len);
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memset(info, 0x00, sizeof(*info));
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switch (!!vmap * *ver) {
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case 0x10:
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info->max0 = 0xff;
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info->max1 = 0xff;
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info->max2 = 0xff;
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break;
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case 0x20:
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info->max0 = nvbios_rd08(bios, vmap + 0x7);
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info->max1 = nvbios_rd08(bios, vmap + 0x8);
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if (*len >= 0xc)
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info->max2 = nvbios_rd08(bios, vmap + 0xc);
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else
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info->max2 = 0xff;
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break;
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}
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return vmap;
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}
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u32
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nvbios_vmap_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len)
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{
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u8 hdr, cnt;
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u32 vmap = nvbios_vmap_table(bios, ver, &hdr, &cnt, len);
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if (vmap && idx < cnt) {
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vmap = vmap + hdr + (idx * *len);
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return vmap;
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}
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return 0;
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}
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u32
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nvbios_vmap_entry_parse(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len,
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struct nvbios_vmap_entry *info)
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{
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u32 vmap = nvbios_vmap_entry(bios, idx, ver, len);
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memset(info, 0x00, sizeof(*info));
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switch (!!vmap * *ver) {
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case 0x10:
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info->link = 0xff;
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info->min = nvbios_rd32(bios, vmap + 0x00);
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info->max = nvbios_rd32(bios, vmap + 0x04);
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info->arg[0] = nvbios_rd32(bios, vmap + 0x08);
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info->arg[1] = nvbios_rd32(bios, vmap + 0x0c);
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info->arg[2] = nvbios_rd32(bios, vmap + 0x10);
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break;
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case 0x20:
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info->mode = nvbios_rd08(bios, vmap + 0x00);
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info->link = nvbios_rd08(bios, vmap + 0x01);
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info->min = nvbios_rd32(bios, vmap + 0x02);
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info->max = nvbios_rd32(bios, vmap + 0x06);
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info->arg[0] = nvbios_rd32(bios, vmap + 0x0a);
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info->arg[1] = nvbios_rd32(bios, vmap + 0x0e);
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info->arg[2] = nvbios_rd32(bios, vmap + 0x12);
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info->arg[3] = nvbios_rd32(bios, vmap + 0x16);
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info->arg[4] = nvbios_rd32(bios, vmap + 0x1a);
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info->arg[5] = nvbios_rd32(bios, vmap + 0x1e);
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break;
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}
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return vmap;
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}
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