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