| 1 | /* $NetBSD: nouveau_subdev_mxm_nv50.c,v 1.3 2016/04/22 20:19:30 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2011 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_mxm_nv50.c,v 1.3 2016/04/22 20:19:30 riastradh Exp $" ); |
| 29 | |
| 30 | #include <subdev/mxm.h> |
| 31 | #include <subdev/bios.h> |
| 32 | #include <subdev/bios/conn.h> |
| 33 | #include <subdev/bios/dcb.h> |
| 34 | #include <subdev/bios/mxm.h> |
| 35 | |
| 36 | #include "mxms.h" |
| 37 | |
| 38 | struct nv50_mxm_priv { |
| 39 | struct nouveau_mxm base; |
| 40 | }; |
| 41 | |
| 42 | struct context { |
| 43 | u32 *outp; |
| 44 | struct mxms_odev desc; |
| 45 | }; |
| 46 | |
| 47 | static bool |
| 48 | mxm_match_tmds_partner(struct nouveau_mxm *mxm, u8 *data, void *info) |
| 49 | { |
| 50 | struct context *ctx = info; |
| 51 | struct mxms_odev desc; |
| 52 | |
| 53 | mxms_output_device(mxm, data, &desc); |
| 54 | if (desc.outp_type == 2 && |
| 55 | desc.dig_conn == ctx->desc.dig_conn) |
| 56 | return false; |
| 57 | return true; |
| 58 | } |
| 59 | |
| 60 | static bool |
| 61 | mxm_match_dcb(struct nouveau_mxm *mxm, u8 *data, void *info) |
| 62 | { |
| 63 | struct nouveau_bios *bios = nouveau_bios(mxm); |
| 64 | struct context *ctx = info; |
| 65 | u64 desc = *(u64 *)data; |
| 66 | |
| 67 | mxms_output_device(mxm, data, &ctx->desc); |
| 68 | |
| 69 | /* match dcb encoder type to mxm-ods device type */ |
| 70 | if ((ctx->outp[0] & 0x0000000f) != ctx->desc.outp_type) |
| 71 | return true; |
| 72 | |
| 73 | /* digital output, have some extra stuff to match here, there's a |
| 74 | * table in the vbios that provides a mapping from the mxm digital |
| 75 | * connection enum values to SOR/link |
| 76 | */ |
| 77 | if ((desc & 0x00000000000000f0) >= 0x20) { |
| 78 | /* check against sor index */ |
| 79 | u8 link = mxm_sor_map(bios, ctx->desc.dig_conn); |
| 80 | if ((ctx->outp[0] & 0x0f000000) != (link & 0x0f) << 24) |
| 81 | return true; |
| 82 | |
| 83 | /* check dcb entry has a compatible link field */ |
| 84 | link = (link & 0x30) >> 4; |
| 85 | if ((link & ((ctx->outp[1] & 0x00000030) >> 4)) != link) |
| 86 | return true; |
| 87 | } |
| 88 | |
| 89 | /* mark this descriptor accounted for by setting invalid device type, |
| 90 | * except of course some manufactures don't follow specs properly and |
| 91 | * we need to avoid killing off the TMDS function on DP connectors |
| 92 | * if MXM-SIS is missing an entry for it. |
| 93 | */ |
| 94 | data[0] &= ~0xf0; |
| 95 | if (ctx->desc.outp_type == 6 && ctx->desc.conn_type == 6 && |
| 96 | mxms_foreach(mxm, 0x01, mxm_match_tmds_partner, ctx)) { |
| 97 | data[0] |= 0x20; /* modify descriptor to match TMDS now */ |
| 98 | } else { |
| 99 | data[0] |= 0xf0; |
| 100 | } |
| 101 | |
| 102 | return false; |
| 103 | } |
| 104 | |
| 105 | static int |
| 106 | mxm_dcb_sanitise_entry(struct nouveau_bios *bios, void *data, int idx, u16 pdcb) |
| 107 | { |
| 108 | struct nouveau_mxm *mxm = data; |
| 109 | struct context ctx = { .outp = (u32 *)(bios->data + pdcb) }; |
| 110 | u8 type, i2cidx, link, ver, len; |
| 111 | u8 *conn; |
| 112 | |
| 113 | /* look for an output device structure that matches this dcb entry. |
| 114 | * if one isn't found, disable it. |
| 115 | */ |
| 116 | if (mxms_foreach(mxm, 0x01, mxm_match_dcb, &ctx)) { |
| 117 | nv_debug(mxm, "disable %d: 0x%08x 0x%08x\n" , |
| 118 | idx, ctx.outp[0], ctx.outp[1]); |
| 119 | ctx.outp[0] |= 0x0000000f; |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | /* modify the output's ddc/aux port, there's a pointer to a table |
| 124 | * with the mapping from mxm ddc/aux port to dcb i2c_index in the |
| 125 | * vbios mxm table |
| 126 | */ |
| 127 | i2cidx = mxm_ddc_map(bios, ctx.desc.ddc_port); |
| 128 | if ((ctx.outp[0] & 0x0000000f) != DCB_OUTPUT_DP) |
| 129 | i2cidx = (i2cidx & 0x0f) << 4; |
| 130 | else |
| 131 | i2cidx = (i2cidx & 0xf0); |
| 132 | |
| 133 | if (i2cidx != 0xf0) { |
| 134 | ctx.outp[0] &= ~0x000000f0; |
| 135 | ctx.outp[0] |= i2cidx; |
| 136 | } |
| 137 | |
| 138 | /* override dcb sorconf.link, based on what mxm data says */ |
| 139 | switch (ctx.desc.outp_type) { |
| 140 | case 0x00: /* Analog CRT */ |
| 141 | case 0x01: /* Analog TV/HDTV */ |
| 142 | break; |
| 143 | default: |
| 144 | link = mxm_sor_map(bios, ctx.desc.dig_conn) & 0x30; |
| 145 | ctx.outp[1] &= ~0x00000030; |
| 146 | ctx.outp[1] |= link; |
| 147 | break; |
| 148 | } |
| 149 | |
| 150 | /* we may need to fixup various other vbios tables based on what |
| 151 | * the descriptor says the connector type should be. |
| 152 | * |
| 153 | * in a lot of cases, the vbios tables will claim DVI-I is possible, |
| 154 | * and the mxm data says the connector is really HDMI. another |
| 155 | * common example is DP->eDP. |
| 156 | */ |
| 157 | conn = bios->data; |
| 158 | conn += dcb_conn(bios, (ctx.outp[0] & 0x0000f000) >> 12, &ver, &len); |
| 159 | type = conn[0]; |
| 160 | switch (ctx.desc.conn_type) { |
| 161 | case 0x01: /* LVDS */ |
| 162 | ctx.outp[1] |= 0x00000004; /* use_power_scripts */ |
| 163 | /* XXX: modify default link width in LVDS table */ |
| 164 | break; |
| 165 | case 0x02: /* HDMI */ |
| 166 | type = DCB_CONNECTOR_HDMI_1; |
| 167 | break; |
| 168 | case 0x03: /* DVI-D */ |
| 169 | type = DCB_CONNECTOR_DVI_D; |
| 170 | break; |
| 171 | case 0x0e: /* eDP, falls through to DPint */ |
| 172 | ctx.outp[1] |= 0x00010000; |
| 173 | /*FALLTHROUGH*/ |
| 174 | case 0x07: /* DP internal, wtf is this?? HP8670w */ |
| 175 | ctx.outp[1] |= 0x00000004; /* use_power_scripts? */ |
| 176 | type = DCB_CONNECTOR_eDP; |
| 177 | break; |
| 178 | default: |
| 179 | break; |
| 180 | } |
| 181 | |
| 182 | if (mxms_version(mxm) >= 0x0300) |
| 183 | conn[0] = type; |
| 184 | |
| 185 | return 0; |
| 186 | } |
| 187 | |
| 188 | static bool |
| 189 | mxm_show_unmatched(struct nouveau_mxm *mxm, u8 *data, void *info) |
| 190 | { |
| 191 | u64 desc = *(u64 *)data; |
| 192 | if ((desc & 0xf0) != 0xf0) |
| 193 | nv_info(mxm, "unmatched output device 0x%016" PRIx64"\n" , desc); |
| 194 | return true; |
| 195 | } |
| 196 | |
| 197 | static void |
| 198 | mxm_dcb_sanitise(struct nouveau_mxm *mxm) |
| 199 | { |
| 200 | struct nouveau_bios *bios = nouveau_bios(mxm); |
| 201 | u8 ver, hdr, cnt, len; |
| 202 | u16 dcb = dcb_table(bios, &ver, &hdr, &cnt, &len); |
| 203 | if (dcb == 0x0000 || ver != 0x40) { |
| 204 | nv_debug(mxm, "unsupported DCB version\n" ); |
| 205 | return; |
| 206 | } |
| 207 | |
| 208 | dcb_outp_foreach(bios, mxm, mxm_dcb_sanitise_entry); |
| 209 | mxms_foreach(mxm, 0x01, mxm_show_unmatched, NULL); |
| 210 | } |
| 211 | |
| 212 | static int |
| 213 | nv50_mxm_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| 214 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 215 | struct nouveau_object **pobject) |
| 216 | { |
| 217 | struct nv50_mxm_priv *priv; |
| 218 | int ret; |
| 219 | |
| 220 | ret = nouveau_mxm_create(parent, engine, oclass, &priv); |
| 221 | *pobject = nv_object(priv); |
| 222 | if (ret) |
| 223 | return ret; |
| 224 | |
| 225 | if (priv->base.action & MXM_SANITISE_DCB) |
| 226 | mxm_dcb_sanitise(&priv->base); |
| 227 | return 0; |
| 228 | } |
| 229 | |
| 230 | struct nouveau_oclass |
| 231 | nv50_mxm_oclass = { |
| 232 | .handle = NV_SUBDEV(MXM, 0x50), |
| 233 | .ofuncs = &(struct nouveau_ofuncs) { |
| 234 | .ctor = nv50_mxm_ctor, |
| 235 | .dtor = _nouveau_mxm_dtor, |
| 236 | .init = _nouveau_mxm_init, |
| 237 | .fini = _nouveau_mxm_fini, |
| 238 | }, |
| 239 | }; |
| 240 | |