| 1 | /* $NetBSD: nouveau_subdev_bios_volt.c,v 1.1.1.1 2014/08/06 12:36:29 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2012 Nouveau Community |
| 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: Martin Peres |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_bios_volt.c,v 1.1.1.1 2014/08/06 12:36:29 riastradh Exp $" ); |
| 29 | |
| 30 | #include <subdev/bios.h> |
| 31 | #include <subdev/bios/bit.h> |
| 32 | #include <subdev/bios/volt.h> |
| 33 | |
| 34 | u16 |
| 35 | nvbios_volt_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| 36 | { |
| 37 | struct bit_entry bit_P; |
| 38 | u16 volt = 0x0000; |
| 39 | |
| 40 | if (!bit_entry(bios, 'P', &bit_P)) { |
| 41 | if (bit_P.version == 2) |
| 42 | volt = nv_ro16(bios, bit_P.offset + 0x0c); |
| 43 | else |
| 44 | if (bit_P.version == 1) |
| 45 | volt = nv_ro16(bios, bit_P.offset + 0x10); |
| 46 | |
| 47 | if (volt) { |
| 48 | *ver = nv_ro08(bios, volt + 0); |
| 49 | switch (*ver) { |
| 50 | case 0x12: |
| 51 | *hdr = 5; |
| 52 | *cnt = nv_ro08(bios, volt + 2); |
| 53 | *len = nv_ro08(bios, volt + 1); |
| 54 | return volt; |
| 55 | case 0x20: |
| 56 | *hdr = nv_ro08(bios, volt + 1); |
| 57 | *cnt = nv_ro08(bios, volt + 2); |
| 58 | *len = nv_ro08(bios, volt + 3); |
| 59 | return volt; |
| 60 | case 0x30: |
| 61 | case 0x40: |
| 62 | case 0x50: |
| 63 | *hdr = nv_ro08(bios, volt + 1); |
| 64 | *cnt = nv_ro08(bios, volt + 3); |
| 65 | *len = nv_ro08(bios, volt + 2); |
| 66 | return volt; |
| 67 | } |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | return 0x0000; |
| 72 | } |
| 73 | |
| 74 | u16 |
| 75 | nvbios_volt_parse(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
| 76 | struct nvbios_volt *info) |
| 77 | { |
| 78 | u16 volt = nvbios_volt_table(bios, ver, hdr, cnt, len); |
| 79 | memset(info, 0x00, sizeof(*info)); |
| 80 | switch (!!volt * *ver) { |
| 81 | case 0x12: |
| 82 | info->vidmask = nv_ro08(bios, volt + 0x04); |
| 83 | break; |
| 84 | case 0x20: |
| 85 | info->vidmask = nv_ro08(bios, volt + 0x05); |
| 86 | break; |
| 87 | case 0x30: |
| 88 | info->vidmask = nv_ro08(bios, volt + 0x04); |
| 89 | break; |
| 90 | case 0x40: |
| 91 | info->base = nv_ro32(bios, volt + 0x04); |
| 92 | info->step = nv_ro16(bios, volt + 0x08); |
| 93 | info->vidmask = nv_ro08(bios, volt + 0x0b); |
| 94 | /*XXX*/ |
| 95 | info->min = 0; |
| 96 | info->max = info->base; |
| 97 | break; |
| 98 | case 0x50: |
| 99 | info->vidmask = nv_ro08(bios, volt + 0x06); |
| 100 | info->min = nv_ro32(bios, volt + 0x0a); |
| 101 | info->max = nv_ro32(bios, volt + 0x0e); |
| 102 | info->base = nv_ro32(bios, volt + 0x12) & 0x00ffffff; |
| 103 | info->step = nv_ro16(bios, volt + 0x16); |
| 104 | break; |
| 105 | } |
| 106 | return volt; |
| 107 | } |
| 108 | |
| 109 | u16 |
| 110 | nvbios_volt_entry(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len) |
| 111 | { |
| 112 | u8 hdr, cnt; |
| 113 | u16 volt = nvbios_volt_table(bios, ver, &hdr, &cnt, len); |
| 114 | if (volt && idx < cnt) { |
| 115 | volt = volt + hdr + (idx * *len); |
| 116 | return volt; |
| 117 | } |
| 118 | return 0x0000; |
| 119 | } |
| 120 | |
| 121 | u16 |
| 122 | nvbios_volt_entry_parse(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len, |
| 123 | struct nvbios_volt_entry *info) |
| 124 | { |
| 125 | u16 volt = nvbios_volt_entry(bios, idx, ver, len); |
| 126 | memset(info, 0x00, sizeof(*info)); |
| 127 | switch (!!volt * *ver) { |
| 128 | case 0x12: |
| 129 | case 0x20: |
| 130 | info->voltage = nv_ro08(bios, volt + 0x00) * 10000; |
| 131 | info->vid = nv_ro08(bios, volt + 0x01); |
| 132 | break; |
| 133 | case 0x30: |
| 134 | info->voltage = nv_ro08(bios, volt + 0x00) * 10000; |
| 135 | info->vid = nv_ro08(bios, volt + 0x01) >> 2; |
| 136 | break; |
| 137 | case 0x40: |
| 138 | case 0x50: |
| 139 | break; |
| 140 | } |
| 141 | return volt; |
| 142 | } |
| 143 | |