/*
* Copyright 2011 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"
#include <subdev/bios.h>
#include <subdev/bios/conn.h>
#include <subdev/bios/dcb.h>
#include <subdev/bios/mxm.h>
struct context {
u32 *outp;
struct mxms_odev desc;
};
static bool
mxm_match_tmds_partner(struct nvkm_mxm *mxm, u8 *data, void *info)
{
struct context *ctx = info;
struct mxms_odev desc;
mxms_output_device(mxm, data, &desc);
if (desc.outp_type == 2 &&
desc.dig_conn == ctx->desc.dig_conn)
return false;
return true;
}
static bool
mxm_match_dcb(struct nvkm_mxm *mxm, u8 *data, void *info)
{
struct nvkm_bios *bios = mxm->subdev.device->bios;
struct context *ctx = info;
u64 desc = *(u64 *)data;
mxms_output_device(mxm, data, &ctx->desc);
/* match dcb encoder type to mxm-ods device type */
if ((ctx->outp[0] & 0x0000000f) != ctx->desc.outp_type)
return true;
/* digital output, have some extra stuff to match here, there's a
* table in the vbios that provides a mapping from the mxm digital
* connection enum values to SOR/link
*/
if ((desc & 0x00000000000000f0) >= 0x20) {
/* check against sor index */
u8 link = mxm_sor_map(bios, ctx->desc.dig_conn);
if ((ctx->outp[0] & 0x0f000000) != (link & 0x0f) << 24)
return true;
/* check dcb entry has a compatible link field */
link = (link & 0x30) >> 4;
if ((link & ((ctx->outp[1] & 0x00000030) >> 4)) != link)
return true;
}
/* mark this descriptor accounted for by setting invalid device type,
* except of course some manufactures don't follow specs properly and
* we need to avoid killing off the TMDS function on DP connectors
* if MXM-SIS is missing an entry for it.
*/
data[0] &= ~0xf0;
if (ctx->desc.outp_type == 6 && ctx->desc.conn_type == 6 &&
mxms_foreach(mxm, 0x01, mxm_match_tmds_partner, ctx)) {
data[0] |= 0x20; /* modify descriptor to match TMDS now */
} else {
data[0] |= 0xf0;
}
return false;
}
static int
mxm_dcb_sanitise_entry(struct nvkm_bios *bios, void *data, int idx, u16 pdcb)
{
struct nvkm_mxm *mxm = data;
struct context ctx = { .outp = (u32 *)(bios->data + pdcb) };
u8 type, i2cidx, link, ver, len;
u8 *conn;
/* look for an output device structure that matches this dcb entry.
* if one isn't found, disable it.
*/
if (mxms_foreach(mxm, 0x01, mxm_match_dcb, &ctx)) {
nvkm_debug(&mxm->subdev, "disable %d: %08x %08x\n",
idx, ctx.outp[0], ctx.outp[1]);
ctx.outp[0] |= 0x0000000f;
return 0;
}
/* modify the output's ddc/aux port, there's a pointer to a table
* with the mapping from mxm ddc/aux port to dcb i2c_index in the
* vbios mxm table
*/
i2cidx = mxm_ddc_map(bios, ctx.desc.ddc_port);
if ((ctx.outp[0] & 0x0000000f) != DCB_OUTPUT_DP)
i2cidx = (i2cidx & 0x0f) << 4;
else
i2cidx = (i2cidx & 0xf0);
if (i2cidx != 0xf0) {
ctx.outp[0] &= ~0x000000f0;
ctx.outp[0] |= i2cidx;
}
/* override dcb sorconf.link, based on what mxm data says */
switch (ctx.desc.outp_type) {
case 0x00: /* Analog CRT */
case 0x01: /* Analog TV/HDTV */
break;
default:
link = mxm_sor_map(bios, ctx.desc.dig_conn) & 0x30;
ctx.outp[1] &= ~0x00000030;
ctx.outp[1] |= link;
break;
}
/* we may need to fixup various other vbios tables based on what
* the descriptor says the connector type should be.
*
* in a lot of cases, the vbios tables will claim DVI-I is possible,
* and the mxm data says the connector is really HDMI. another
* common example is DP->eDP.
*/
conn = bios->data;
conn += nvbios_connEe(bios, (ctx.outp[0] & 0x0000f000) >> 12, &ver, &len);
type = conn[0];
switch (ctx.desc.conn_type) {
case 0x01: /* LVDS */
ctx.outp[1] |= 0x00000004; /* use_power_scripts */
/* XXX: modify default link width in LVDS table */
break;
case 0x02: /* HDMI */
type = DCB_CONNECTOR_HDMI_1;
break;
case 0x03: /* DVI-D */
type = DCB_CONNECTOR_DVI_D;
break;
case 0x0e: /* eDP, falls through to DPint */
ctx.outp[1] |= 0x00010000;
fallthrough;
case 0x07: /* DP internal, wtf is this?? HP8670w */
ctx.outp[1] |= 0x00000004; /* use_power_scripts? */
type = DCB_CONNECTOR_eDP;
break;
default:
break;
}
if (mxms_version(mxm) >= 0x0300)
conn[0] = type;
return 0;
}
static bool
mxm_show_unmatched(struct nvkm_mxm *mxm, u8 *data, void *info)
{
struct nvkm_subdev *subdev = &mxm->subdev;
u64 desc = *(u64 *)data;
if ((desc & 0xf0) != 0xf0)
nvkm_info(subdev, "unmatched output device %016llx\n", desc);
return true;
}
static void
mxm_dcb_sanitise(struct nvkm_mxm *mxm)
{
struct nvkm_subdev *subdev = &mxm->subdev;
struct nvkm_bios *bios = subdev->device->bios;
u8 ver, hdr, cnt, len;
u16 dcb = dcb_table(bios, &ver, &hdr, &cnt, &len);
if (dcb == 0x0000 || (ver != 0x40 && ver != 0x41)) {
nvkm_warn(subdev, "unsupported DCB version\n");
return;
}
dcb_outp_foreach(bios, mxm, mxm_dcb_sanitise_entry);
mxms_foreach(mxm, 0x01, mxm_show_unmatched, NULL);
}
int
nv50_mxm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_subdev **pmxm)
{
struct nvkm_mxm *mxm;
int ret;
ret = nvkm_mxm_new_(device, type, inst, &mxm);
if (mxm)
*pmxm = &mxm->subdev;
if (ret)
return ret;
if (mxm->action & MXM_SANITISE_DCB)
mxm_dcb_sanitise(mxm);
return 0;
}
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