Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/mxm/mxms.c
/*
* Copyright 2012 Red Hat Inc.
*
* 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: Ben Skeggs
*/
#include "mxms.h"
#define ROM16(x) get_unaligned_le16(&(x))
#define ROM32(x) get_unaligned_le32(&(x))
static u8 *
mxms_data(struct nvkm_mxm *mxm)
{
return mxm->mxms;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 17 | 100.00% | 2 | 100.00% |
| Total | 17 | 100.00% | 2 | 100.00% |
u16
mxms_version(struct nvkm_mxm *mxm)
{
u8 *mxms = mxms_data(mxm);
u16 version = (mxms[4] << 8) | mxms[5];
switch (version ) {
case 0x0200:
case 0x0201:
case 0x0300:
return version;
default:
break;
}
nvkm_debug(&mxm->subdev, "unknown version %d.%d\n", mxms[4], mxms[5]);
return 0x0000;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 79 | 100.00% | 3 | 100.00% |
| Total | 79 | 100.00% | 3 | 100.00% |
u16
mxms_headerlen(struct nvkm_mxm *mxm)
{
return 8;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 13 | 100.00% | 2 | 100.00% |
| Total | 13 | 100.00% | 2 | 100.00% |
u16
mxms_structlen(struct nvkm_mxm *mxm)
{
return *(u16 *)&mxms_data(mxm)[6];
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 25 | 100.00% | 2 | 100.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
bool
mxms_checksum(struct nvkm_mxm *mxm)
{
u16 size = mxms_headerlen(mxm) + mxms_structlen(mxm);
u8 *mxms = mxms_data(mxm), sum = 0;
while (size--)
sum += *mxms++;
if (sum) {
nvkm_debug(&mxm->subdev, "checksum invalid\n");
return false;
}
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 69 | 100.00% | 3 | 100.00% |
| Total | 69 | 100.00% | 3 | 100.00% |
bool
mxms_valid(struct nvkm_mxm *mxm)
{
u8 *mxms = mxms_data(mxm);
if (*(u32 *)mxms != 0x5f4d584d) {
nvkm_debug(&mxm->subdev, "signature invalid\n");
return false;
}
if (!mxms_version(mxm) || !mxms_checksum(mxm))
return false;
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 65 | 100.00% | 3 | 100.00% |
| Total | 65 | 100.00% | 3 | 100.00% |
bool
mxms_foreach(struct nvkm_mxm *mxm, u8 types,
bool (*exec)(struct nvkm_mxm *, u8 *, void *), void *info)
{
struct nvkm_subdev *subdev = &mxm->subdev;
u8 *mxms = mxms_data(mxm);
u8 *desc = mxms + mxms_headerlen(mxm);
u8 *fini = desc + mxms_structlen(mxm) - 1;
while (desc < fini) {
u8 type = desc[0] & 0x0f;
u8 headerlen = 0;
u8 recordlen = 0;
u8 entries = 0;
switch (type) {
case 0: /* Output Device Structure */
if (mxms_version(mxm) >= 0x0300)
headerlen = 8;
else
headerlen = 6;
break;
case 1: /* System Cooling Capability Structure */
case 2: /* Thermal Structure */
case 3: /* Input Power Structure */
headerlen = 4;
break;
case 4: /* GPIO Device Structure */
headerlen = 4;
recordlen = 2;
entries = (ROM32(desc[0]) & 0x01f00000) >> 20;
break;
case 5: /* Vendor Specific Structure */
headerlen = 8;
break;
case 6: /* Backlight Control Structure */
if (mxms_version(mxm) >= 0x0300) {
headerlen = 4;
recordlen = 8;
entries = (desc[1] & 0xf0) >> 4;
} else {
headerlen = 8;
}
break;
case 7: /* Fan Control Structure */
headerlen = 8;
recordlen = 4;
entries = desc[1] & 0x07;
break;
default:
nvkm_debug(subdev, "unknown descriptor type %d\n", type);
return false;
}
if (mxm->subdev.debug >= NV_DBG_DEBUG && (exec == NULL)) {
static const char * mxms_desc[] = {
"ODS", "SCCS", "TS", "IPS",
"GSD", "VSS", "BCS", "FCS",
};
u8 *dump = desc;
char data[32], *ptr;
int i, j;
for (j = headerlen - 1, ptr = data; j >= 0; j--)
ptr += sprintf(ptr, "%02x", dump[j]);
dump += headerlen;
nvkm_debug(subdev, "%4s: %s\n", mxms_desc[type], data);
for (i = 0; i < entries; i++, dump += recordlen) {
for (j = recordlen - 1, ptr = data; j >= 0; j--)
ptr += sprintf(ptr, "%02x", dump[j]);
nvkm_debug(subdev, " %s\n", data);
}
}
if (types & (1 << type)) {
if (!exec(mxm, desc, info))
return false;
}
desc += headerlen + (entries * recordlen);
}
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 488 | 100.00% | 4 | 100.00% |
| Total | 488 | 100.00% | 4 | 100.00% |
void
mxms_output_device(struct nvkm_mxm *mxm, u8 *pdata, struct mxms_odev *desc)
{
u64 data = ROM32(pdata[0]);
if (mxms_version(mxm) >= 0x0300)
data |= (u64)ROM16(pdata[4]) << 32;
desc->outp_type = (data & 0x00000000000000f0ULL) >> 4;
desc->ddc_port = (data & 0x0000000000000f00ULL) >> 8;
desc->conn_type = (data & 0x000000000001f000ULL) >> 12;
desc->dig_conn = (data & 0x0000000000780000ULL) >> 19;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 102 | 100.00% | 2 | 100.00% |
| Total | 102 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 874 | 99.77% | 4 | 80.00% |
| Ilia Mirkin | 2 | 0.23% | 1 | 20.00% |
| Total | 876 | 100.00% | 5 | 100.00% |
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