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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | /* * 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 <subdev/bios.h> #include <subdev/bios/bit.h> #include <subdev/bios/mxm.h> u16 mxm_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr) { struct nvkm_subdev *subdev = &bios->subdev; struct bit_entry x; if (bit_entry(bios, 'x', &x)) { nvkm_debug(subdev, "BIT 'x' table not present\n"); return 0x0000; } *ver = x.version; *hdr = x.length; if (*ver != 1 || *hdr < 3) { nvkm_warn(subdev, "BIT 'x' table %d/%d unknown\n", *ver, *hdr); return 0x0000; } return x.offset; } /* These map MXM v2.x digital connection values to the appropriate SOR/link, * hopefully they're correct for all boards within the same chipset... * * MXM v3.x VBIOS are nicer and provide pointers to these tables. */ static u8 g84_sor_map[16] = { 0x00, 0x12, 0x22, 0x11, 0x32, 0x31, 0x11, 0x31, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static u8 g92_sor_map[16] = { 0x00, 0x12, 0x22, 0x11, 0x32, 0x31, 0x11, 0x31, 0x11, 0x31, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static u8 g94_sor_map[16] = { 0x00, 0x14, 0x24, 0x11, 0x34, 0x31, 0x11, 0x31, 0x11, 0x31, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00 }; static u8 g98_sor_map[16] = { 0x00, 0x14, 0x12, 0x11, 0x00, 0x31, 0x11, 0x31, 0x11, 0x31, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; u8 mxm_sor_map(struct nvkm_bios *bios, u8 conn) { struct nvkm_subdev *subdev = &bios->subdev; u8 ver, hdr; u16 mxm = mxm_table(bios, &ver, &hdr); if (mxm && hdr >= 6) { u16 map = nvbios_rd16(bios, mxm + 4); if (map) { ver = nvbios_rd08(bios, map); if (ver == 0x10 || ver == 0x11) { if (conn < nvbios_rd08(bios, map + 3)) { map += nvbios_rd08(bios, map + 1); map += conn; return nvbios_rd08(bios, map); } return 0x00; } nvkm_warn(subdev, "unknown sor map v%02x\n", ver); } } if (bios->version.chip == 0x84 || bios->version.chip == 0x86) return g84_sor_map[conn]; if (bios->version.chip == 0x92) return g92_sor_map[conn]; if (bios->version.chip == 0x94 || bios->version.chip == 0x96) return g94_sor_map[conn]; if (bios->version.chip == 0x98) return g98_sor_map[conn]; nvkm_warn(subdev, "missing sor map\n"); return 0x00; } u8 mxm_ddc_map(struct nvkm_bios *bios, u8 port) { struct nvkm_subdev *subdev = &bios->subdev; u8 ver, hdr; u16 mxm = mxm_table(bios, &ver, &hdr); if (mxm && hdr >= 8) { u16 map = nvbios_rd16(bios, mxm + 6); if (map) { ver = nvbios_rd08(bios, map); if (ver == 0x10) { if (port < nvbios_rd08(bios, map + 3)) { map += nvbios_rd08(bios, map + 1); map += port; return nvbios_rd08(bios, map); } return 0x00; } nvkm_warn(subdev, "unknown ddc map v%02x\n", ver); } } /* v2.x: directly write port as dcb i2cidx */ return (port << 4) | port; } |