Release 4.15 drivers/gpu/drm/nouveau/nvkm/subdev/bios/extdev.c
/*
* 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/dcb.h>
#include <subdev/bios/extdev.h>
static u16
extdev_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *len, u8 *cnt)
{
u8 dcb_ver, dcb_hdr, dcb_cnt, dcb_len;
u16 dcb, extdev = 0;
dcb = dcb_table(bios, &dcb_ver, &dcb_hdr, &dcb_cnt, &dcb_len);
if (!dcb || (dcb_ver != 0x30 && dcb_ver != 0x40 && dcb_ver != 0x41))
return 0x0000;
extdev = nvbios_rd16(bios, dcb + 18);
if (!extdev)
return 0x0000;
*ver = nvbios_rd08(bios, extdev + 0);
*hdr = nvbios_rd08(bios, extdev + 1);
*cnt = nvbios_rd08(bios, extdev + 2);
*len = nvbios_rd08(bios, extdev + 3);
return extdev + *hdr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 147 | 93.63% | 1 | 25.00% |
| Ben Skeggs | 6 | 3.82% | 2 | 50.00% |
| Karol Herbst | 4 | 2.55% | 1 | 25.00% |
| Total | 157 | 100.00% | 4 | 100.00% |
static u16
nvbios_extdev_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len)
{
u8 hdr, cnt;
u16 extdev = extdev_table(bios, ver, &hdr, len, &cnt);
if (extdev && idx < cnt)
return extdev + idx * *len;
return 0x0000;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 62 | 96.88% | 1 | 33.33% |
| Marcin Ślusarz | 1 | 1.56% | 1 | 33.33% |
| Ben Skeggs | 1 | 1.56% | 1 | 33.33% |
| Total | 64 | 100.00% | 3 | 100.00% |
static void
extdev_parse_entry(struct nvkm_bios *bios, u16 offset,
struct nvbios_extdev_func *entry)
{
entry->type = nvbios_rd08(bios, offset + 0);
entry->addr = nvbios_rd08(bios, offset + 1);
entry->bus = (nvbios_rd08(bios, offset + 2) >> 4) & 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 60 | 93.75% | 1 | 33.33% |
| Ben Skeggs | 4 | 6.25% | 2 | 66.67% |
| Total | 64 | 100.00% | 3 | 100.00% |
int
nvbios_extdev_parse(struct nvkm_bios *bios, int idx,
struct nvbios_extdev_func *func)
{
u8 ver, len;
u16 entry;
if (!(entry = nvbios_extdev_entry(bios, idx, &ver, &len)))
return -EINVAL;
extdev_parse_entry(bios, entry, func);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 61 | 98.39% | 1 | 50.00% |
| Ben Skeggs | 1 | 1.61% | 1 | 50.00% |
| Total | 62 | 100.00% | 2 | 100.00% |
int
nvbios_extdev_find(struct nvkm_bios *bios, enum nvbios_extdev_type type,
struct nvbios_extdev_func *func)
{
u8 ver, len, i;
u16 entry;
i = 0;
while ((entry = nvbios_extdev_entry(bios, i++, &ver, &len))) {
extdev_parse_entry(bios, entry, func);
if (func->type == type)
return 0;
}
return -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 78 | 98.73% | 1 | 50.00% |
| Ben Skeggs | 1 | 1.27% | 1 | 50.00% |
| Total | 79 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 418 | 95.87% | 1 | 20.00% |
| Ben Skeggs | 13 | 2.98% | 2 | 40.00% |
| Karol Herbst | 4 | 0.92% | 1 | 20.00% |
| Marcin Ślusarz | 1 | 0.23% | 1 | 20.00% |
| Total | 436 | 100.00% | 5 | 100.00% |
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