| 1 | /* $NetBSD: nouveau_subdev_bios_dp.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2012 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 | |
| 28 | #include <sys/cdefs.h> |
| 29 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_bios_dp.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $" ); |
| 30 | |
| 31 | #include "subdev/bios.h" |
| 32 | #include "subdev/bios/bit.h" |
| 33 | #include "subdev/bios/dp.h" |
| 34 | |
| 35 | static u16 |
| 36 | nvbios_dp_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| 37 | { |
| 38 | struct bit_entry d; |
| 39 | |
| 40 | if (!bit_entry(bios, 'd', &d)) { |
| 41 | if (d.version == 1 && d.length >= 2) { |
| 42 | u16 data = nv_ro16(bios, d.offset); |
| 43 | if (data) { |
| 44 | *ver = nv_ro08(bios, data + 0x00); |
| 45 | switch (*ver) { |
| 46 | case 0x21: |
| 47 | case 0x30: |
| 48 | case 0x40: |
| 49 | *hdr = nv_ro08(bios, data + 0x01); |
| 50 | *len = nv_ro08(bios, data + 0x02); |
| 51 | *cnt = nv_ro08(bios, data + 0x03); |
| 52 | return data; |
| 53 | default: |
| 54 | break; |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | return 0x0000; |
| 61 | } |
| 62 | |
| 63 | static u16 |
| 64 | nvbios_dpout_entry(struct nouveau_bios *bios, u8 idx, |
| 65 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| 66 | { |
| 67 | u16 data = nvbios_dp_table(bios, ver, hdr, cnt, len); |
| 68 | if (data && idx < *cnt) { |
| 69 | u16 outp = nv_ro16(bios, data + *hdr + idx * *len); |
| 70 | switch (*ver * !!outp) { |
| 71 | case 0x21: |
| 72 | case 0x30: |
| 73 | *hdr = nv_ro08(bios, data + 0x04); |
| 74 | *len = nv_ro08(bios, data + 0x05); |
| 75 | *cnt = nv_ro08(bios, outp + 0x04); |
| 76 | break; |
| 77 | case 0x40: |
| 78 | *hdr = nv_ro08(bios, data + 0x04); |
| 79 | *cnt = 0; |
| 80 | *len = 0; |
| 81 | break; |
| 82 | default: |
| 83 | break; |
| 84 | } |
| 85 | return outp; |
| 86 | } |
| 87 | *ver = 0x00; |
| 88 | return 0x0000; |
| 89 | } |
| 90 | |
| 91 | u16 |
| 92 | nvbios_dpout_parse(struct nouveau_bios *bios, u8 idx, |
| 93 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
| 94 | struct nvbios_dpout *info) |
| 95 | { |
| 96 | u16 data = nvbios_dpout_entry(bios, idx, ver, hdr, cnt, len); |
| 97 | memset(info, 0x00, sizeof(*info)); |
| 98 | if (data && *ver) { |
| 99 | info->type = nv_ro16(bios, data + 0x00); |
| 100 | info->mask = nv_ro16(bios, data + 0x02); |
| 101 | switch (*ver) { |
| 102 | case 0x21: |
| 103 | case 0x30: |
| 104 | info->flags = nv_ro08(bios, data + 0x05); |
| 105 | info->script[0] = nv_ro16(bios, data + 0x06); |
| 106 | info->script[1] = nv_ro16(bios, data + 0x08); |
| 107 | info->lnkcmp = nv_ro16(bios, data + 0x0a); |
| 108 | if (*len >= 0x0f) { |
| 109 | info->script[2] = nv_ro16(bios, data + 0x0c); |
| 110 | info->script[3] = nv_ro16(bios, data + 0x0e); |
| 111 | } |
| 112 | if (*len >= 0x11) |
| 113 | info->script[4] = nv_ro16(bios, data + 0x10); |
| 114 | break; |
| 115 | case 0x40: |
| 116 | info->flags = nv_ro08(bios, data + 0x04); |
| 117 | info->script[0] = nv_ro16(bios, data + 0x05); |
| 118 | info->script[1] = nv_ro16(bios, data + 0x07); |
| 119 | info->lnkcmp = nv_ro16(bios, data + 0x09); |
| 120 | info->script[2] = nv_ro16(bios, data + 0x0b); |
| 121 | info->script[3] = nv_ro16(bios, data + 0x0d); |
| 122 | info->script[4] = nv_ro16(bios, data + 0x0f); |
| 123 | break; |
| 124 | default: |
| 125 | data = 0x0000; |
| 126 | break; |
| 127 | } |
| 128 | } |
| 129 | return data; |
| 130 | } |
| 131 | |
| 132 | u16 |
| 133 | nvbios_dpout_match(struct nouveau_bios *bios, u16 type, u16 mask, |
| 134 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
| 135 | struct nvbios_dpout *info) |
| 136 | { |
| 137 | u16 data, idx = 0; |
| 138 | while ((data = nvbios_dpout_parse(bios, idx++, ver, hdr, cnt, len, info)) || *ver) { |
| 139 | if (data && info->type == type) { |
| 140 | if ((info->mask & mask) == mask) |
| 141 | break; |
| 142 | } |
| 143 | } |
| 144 | return data; |
| 145 | } |
| 146 | |
| 147 | static u16 |
| 148 | nvbios_dpcfg_entry(struct nouveau_bios *bios, u16 outp, u8 idx, |
| 149 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| 150 | { |
| 151 | if (*ver >= 0x40) { |
| 152 | outp = nvbios_dp_table(bios, ver, hdr, cnt, len); |
| 153 | *hdr = *hdr + (*len * * cnt); |
| 154 | *len = nv_ro08(bios, outp + 0x06); |
| 155 | *cnt = nv_ro08(bios, outp + 0x07); |
| 156 | } |
| 157 | |
| 158 | if (idx < *cnt) |
| 159 | return outp + *hdr + (idx * *len); |
| 160 | |
| 161 | return 0x0000; |
| 162 | } |
| 163 | |
| 164 | u16 |
| 165 | nvbios_dpcfg_parse(struct nouveau_bios *bios, u16 outp, u8 idx, |
| 166 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
| 167 | struct nvbios_dpcfg *info) |
| 168 | { |
| 169 | u16 data = nvbios_dpcfg_entry(bios, outp, idx, ver, hdr, cnt, len); |
| 170 | if (data) { |
| 171 | switch (*ver) { |
| 172 | case 0x21: |
| 173 | info->drv = nv_ro08(bios, data + 0x02); |
| 174 | info->pre = nv_ro08(bios, data + 0x03); |
| 175 | info->unk = nv_ro08(bios, data + 0x04); |
| 176 | break; |
| 177 | case 0x30: |
| 178 | case 0x40: |
| 179 | info->drv = nv_ro08(bios, data + 0x01); |
| 180 | info->pre = nv_ro08(bios, data + 0x02); |
| 181 | info->unk = nv_ro08(bios, data + 0x03); |
| 182 | break; |
| 183 | default: |
| 184 | data = 0x0000; |
| 185 | break; |
| 186 | } |
| 187 | } |
| 188 | return data; |
| 189 | } |
| 190 | |
| 191 | u16 |
| 192 | nvbios_dpcfg_match(struct nouveau_bios *bios, u16 outp, u8 un, u8 vs, u8 pe, |
| 193 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
| 194 | struct nvbios_dpcfg *info) |
| 195 | { |
| 196 | u8 idx = 0xff; |
| 197 | u16 data; |
| 198 | |
| 199 | if (*ver >= 0x30) { |
| 200 | const u8 vsoff[] = { 0, 4, 7, 9 }; |
| 201 | idx = (un * 10) + vsoff[vs] + pe; |
| 202 | } else { |
| 203 | while ((data = nvbios_dpcfg_entry(bios, outp, idx, |
| 204 | ver, hdr, cnt, len))) { |
| 205 | if (nv_ro08(bios, data + 0x00) == vs && |
| 206 | nv_ro08(bios, data + 0x01) == pe) |
| 207 | break; |
| 208 | idx++; |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | return nvbios_dpcfg_parse(bios, outp, pe, ver, hdr, cnt, len, info); |
| 213 | } |
| 214 | |