221 lines
6.2 KiB
C
221 lines
6.2 KiB
C
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/*
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* Copyright 2011 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "mxms.h"
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#include <subdev/bios.h>
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#include <subdev/bios/conn.h>
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#include <subdev/bios/dcb.h>
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#include <subdev/bios/mxm.h>
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struct context {
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u32 *outp;
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struct mxms_odev desc;
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};
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static bool
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mxm_match_tmds_partner(struct nvkm_mxm *mxm, u8 *data, void *info)
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{
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struct context *ctx = info;
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struct mxms_odev desc;
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mxms_output_device(mxm, data, &desc);
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if (desc.outp_type == 2 &&
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desc.dig_conn == ctx->desc.dig_conn)
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return false;
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return true;
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}
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static bool
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mxm_match_dcb(struct nvkm_mxm *mxm, u8 *data, void *info)
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{
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struct nvkm_bios *bios = mxm->subdev.device->bios;
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struct context *ctx = info;
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u64 desc = *(u64 *)data;
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mxms_output_device(mxm, data, &ctx->desc);
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/* match dcb encoder type to mxm-ods device type */
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if ((ctx->outp[0] & 0x0000000f) != ctx->desc.outp_type)
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return true;
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/* digital output, have some extra stuff to match here, there's a
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* table in the vbios that provides a mapping from the mxm digital
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* connection enum values to SOR/link
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*/
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if ((desc & 0x00000000000000f0) >= 0x20) {
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/* check against sor index */
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u8 link = mxm_sor_map(bios, ctx->desc.dig_conn);
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if ((ctx->outp[0] & 0x0f000000) != (link & 0x0f) << 24)
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return true;
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/* check dcb entry has a compatible link field */
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link = (link & 0x30) >> 4;
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if ((link & ((ctx->outp[1] & 0x00000030) >> 4)) != link)
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return true;
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}
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/* mark this descriptor accounted for by setting invalid device type,
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* except of course some manufactures don't follow specs properly and
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* we need to avoid killing off the TMDS function on DP connectors
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* if MXM-SIS is missing an entry for it.
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*/
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data[0] &= ~0xf0;
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if (ctx->desc.outp_type == 6 && ctx->desc.conn_type == 6 &&
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mxms_foreach(mxm, 0x01, mxm_match_tmds_partner, ctx)) {
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data[0] |= 0x20; /* modify descriptor to match TMDS now */
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} else {
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data[0] |= 0xf0;
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}
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return false;
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}
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static int
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mxm_dcb_sanitise_entry(struct nvkm_bios *bios, void *data, int idx, u16 pdcb)
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{
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struct nvkm_mxm *mxm = data;
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struct context ctx = { .outp = (u32 *)(bios->data + pdcb) };
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u8 type, i2cidx, link, ver, len;
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u8 *conn;
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/* look for an output device structure that matches this dcb entry.
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* if one isn't found, disable it.
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*/
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if (mxms_foreach(mxm, 0x01, mxm_match_dcb, &ctx)) {
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nvkm_debug(&mxm->subdev, "disable %d: %08x %08x\n",
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idx, ctx.outp[0], ctx.outp[1]);
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ctx.outp[0] |= 0x0000000f;
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return 0;
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}
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/* modify the output's ddc/aux port, there's a pointer to a table
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* with the mapping from mxm ddc/aux port to dcb i2c_index in the
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* vbios mxm table
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*/
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i2cidx = mxm_ddc_map(bios, ctx.desc.ddc_port);
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if ((ctx.outp[0] & 0x0000000f) != DCB_OUTPUT_DP)
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i2cidx = (i2cidx & 0x0f) << 4;
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else
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i2cidx = (i2cidx & 0xf0);
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if (i2cidx != 0xf0) {
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ctx.outp[0] &= ~0x000000f0;
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ctx.outp[0] |= i2cidx;
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}
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/* override dcb sorconf.link, based on what mxm data says */
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switch (ctx.desc.outp_type) {
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case 0x00: /* Analog CRT */
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case 0x01: /* Analog TV/HDTV */
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break;
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default:
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link = mxm_sor_map(bios, ctx.desc.dig_conn) & 0x30;
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ctx.outp[1] &= ~0x00000030;
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ctx.outp[1] |= link;
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break;
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}
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/* we may need to fixup various other vbios tables based on what
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* the descriptor says the connector type should be.
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*
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* in a lot of cases, the vbios tables will claim DVI-I is possible,
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* and the mxm data says the connector is really HDMI. another
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* common example is DP->eDP.
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*/
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conn = bios->data;
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conn += nvbios_connEe(bios, (ctx.outp[0] & 0x0000f000) >> 12, &ver, &len);
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type = conn[0];
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switch (ctx.desc.conn_type) {
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case 0x01: /* LVDS */
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ctx.outp[1] |= 0x00000004; /* use_power_scripts */
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/* XXX: modify default link width in LVDS table */
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break;
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case 0x02: /* HDMI */
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type = DCB_CONNECTOR_HDMI_1;
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break;
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case 0x03: /* DVI-D */
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type = DCB_CONNECTOR_DVI_D;
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break;
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case 0x0e: /* eDP, falls through to DPint */
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ctx.outp[1] |= 0x00010000;
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fallthrough;
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case 0x07: /* DP internal, wtf is this?? HP8670w */
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ctx.outp[1] |= 0x00000004; /* use_power_scripts? */
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type = DCB_CONNECTOR_eDP;
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break;
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default:
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break;
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}
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if (mxms_version(mxm) >= 0x0300)
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conn[0] = type;
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return 0;
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}
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static bool
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mxm_show_unmatched(struct nvkm_mxm *mxm, u8 *data, void *info)
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{
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struct nvkm_subdev *subdev = &mxm->subdev;
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u64 desc = *(u64 *)data;
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if ((desc & 0xf0) != 0xf0)
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nvkm_info(subdev, "unmatched output device %016llx\n", desc);
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return true;
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}
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static void
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mxm_dcb_sanitise(struct nvkm_mxm *mxm)
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{
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struct nvkm_subdev *subdev = &mxm->subdev;
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struct nvkm_bios *bios = subdev->device->bios;
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u8 ver, hdr, cnt, len;
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u16 dcb = dcb_table(bios, &ver, &hdr, &cnt, &len);
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if (dcb == 0x0000 || (ver != 0x40 && ver != 0x41)) {
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nvkm_warn(subdev, "unsupported DCB version\n");
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return;
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}
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dcb_outp_foreach(bios, mxm, mxm_dcb_sanitise_entry);
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mxms_foreach(mxm, 0x01, mxm_show_unmatched, NULL);
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}
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int
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nv50_mxm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
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struct nvkm_subdev **pmxm)
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{
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struct nvkm_mxm *mxm;
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int ret;
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ret = nvkm_mxm_new_(device, type, inst, &mxm);
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if (mxm)
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*pmxm = &mxm->subdev;
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if (ret)
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return ret;
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if (mxm->action & MXM_SANITISE_DCB)
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mxm_dcb_sanitise(mxm);
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return 0;
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}
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