192 lines
4.6 KiB
C
192 lines
4.6 KiB
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;
|
|
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
u16
|
|
mxms_headerlen(struct nvkm_mxm *mxm)
|
|
{
|
|
return 8;
|
|
}
|
|
|
|
u16
|
|
mxms_structlen(struct nvkm_mxm *mxm)
|
|
{
|
|
return *(u16 *)&mxms_data(mxm)[6];
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|