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