| 1 | /* $NetBSD: powernow.h,v 1.13 2011/02/24 10:56:02 jruoho Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2004 Martin Végiard. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | /*- |
| 31 | * Copyright (c) 2004-2005 Bruno Ducrot |
| 32 | * Copyright (c) 2004 FUKUDA Nobuhiko <nfukuda@spa.is.uec.ac.jp> |
| 33 | * |
| 34 | * Redistribution and use in source and binary forms, with or without |
| 35 | * modification, are permitted provided that the following conditions |
| 36 | * are met: |
| 37 | * 1. Redistributions of source code must retain the above copyright |
| 38 | * notice, this list of conditions and the following disclaimer. |
| 39 | * 2. Redistributions in binary form must reproduce the above copyright |
| 40 | * notice, this list of conditions and the following disclaimer in the |
| 41 | * documentation and/or other materials provided with the distribution. |
| 42 | * |
| 43 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 44 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 45 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 46 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 47 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 48 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 49 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 50 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 51 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 52 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 53 | */ |
| 54 | |
| 55 | #ifndef _X86_POWERNOW_H |
| 56 | #define _X86_POWERNOW_H |
| 57 | |
| 58 | #ifdef POWERNOW_DEBUG |
| 59 | #define DPRINTF(x) do { printf x; } while (0) |
| 60 | #else |
| 61 | #define DPRINTF(x) |
| 62 | #endif |
| 63 | |
| 64 | #define BIOS_START 0xe0000 |
| 65 | #define BIOS_LEN 0x20000 |
| 66 | #define BIOS_STEP 16 |
| 67 | |
| 68 | /* |
| 69 | * MSRs and bits used by Powernow technology |
| 70 | */ |
| 71 | #define MSR_AMDK7_FIDVID_CTL 0xc0010041 |
| 72 | #define MSR_AMDK7_FIDVID_STATUS 0xc0010042 |
| 73 | #define AMD_PN_FID_VID 0x06 |
| 74 | #define AMD_ERRATA_A0_CPUSIG 0x660 |
| 75 | |
| 76 | #define PN7_FLAG_ERRATA_A0 0x01 |
| 77 | #define PN7_FLAG_DESKTOP_VRM 0x02 |
| 78 | |
| 79 | /* Bitfields used by K7 */ |
| 80 | #define PN7_PSB_VERSION 0x12 |
| 81 | #define PN7_CTR_FID(x) ((x) & 0x1f) |
| 82 | #define PN7_CTR_VID(x) (((x) & 0x1f) << 8) |
| 83 | #define PN7_CTR_FIDC 0x00010000 |
| 84 | #define PN7_CTR_VIDC 0x00020000 |
| 85 | #define PN7_CTR_FIDCHRATIO 0x00100000 |
| 86 | #define PN7_CTR_SGTC(x) (((uint64_t)(x) & 0x000fffff) << 32) |
| 87 | |
| 88 | #define PN7_STA_CFID(x) ((x) & 0x1f) |
| 89 | #define PN7_STA_SFID(x) (((x) >> 8) & 0x1f) |
| 90 | #define PN7_STA_MFID(x) (((x) >> 16) & 0x1f) |
| 91 | #define PN7_STA_CVID(x) (((x) >> 32) & 0x1f) |
| 92 | #define PN7_STA_SVID(x) (((x) >> 40) & 0x1f) |
| 93 | #define PN7_STA_MVID(x) (((x) >> 48) & 0x1f) |
| 94 | |
| 95 | /* Bitfields used by K8 */ |
| 96 | #define PN8_CTR_FID(x) ((x) & 0x3f) |
| 97 | #define PN8_CTR_VID(x) (((x) & 0x1f) << 8) |
| 98 | #define PN8_CTR_PENDING(x) (((x) & 1) << 32) |
| 99 | |
| 100 | #define PN8_STA_CFID(x) ((x) & 0x3f) |
| 101 | #define PN8_STA_SFID(x) (((x) >> 8) & 0x3f) |
| 102 | #define PN8_STA_MFID(x) (((x) >> 16) & 0x3f) |
| 103 | #define PN8_STA_PENDING(x) (((x) >> 31) & 0x01) |
| 104 | #define PN8_STA_CVID(x) (((x) >> 32) & 0x1f) |
| 105 | #define PN8_STA_SVID(x) (((x) >> 40) & 0x1f) |
| 106 | #define PN8_STA_MVID(x) (((x) >> 48) & 0x1f) |
| 107 | |
| 108 | #define COUNT_OFF_IRT(irt) DELAY(10 * (1 << (irt))) |
| 109 | #define COUNT_OFF_VST(vst) DELAY(20 * (vst)) |
| 110 | |
| 111 | #define FID_TO_VCO_FID(fid) \ |
| 112 | (((fid) < 8) ? (8 + ((fid) << 1)) : (fid)) |
| 113 | |
| 114 | /* Reserved1 to powernow k8 configuration */ |
| 115 | #define PN8_PSB_TO_RVO(x) ((x) & 0x03) |
| 116 | #define PN8_PSB_TO_IRT(x) (((x) >> 2) & 0x03) |
| 117 | #define PN8_PSB_TO_MVS(x) (((x) >> 4) & 0x03) |
| 118 | #define PN8_PSB_TO_BATT(x) (((x) >> 6) & 0x03) |
| 119 | |
| 120 | #define POWERNOW_MAX_STATES 16 |
| 121 | |
| 122 | struct powernow_state { |
| 123 | int freq; |
| 124 | uint8_t fid; |
| 125 | uint8_t vid; |
| 126 | }; |
| 127 | |
| 128 | struct powernow_cpu_state { |
| 129 | struct powernow_state state_table[POWERNOW_MAX_STATES]; |
| 130 | unsigned int fsb; |
| 131 | unsigned int n_states; |
| 132 | unsigned int sgtc; |
| 133 | unsigned int vst; |
| 134 | unsigned int mvs; |
| 135 | unsigned int pll; |
| 136 | unsigned int rvo; |
| 137 | unsigned int irt; |
| 138 | int low; |
| 139 | }; |
| 140 | |
| 141 | struct powernow_psb_s { |
| 142 | char signature[10]; /* AMDK7PNOW! */ |
| 143 | uint8_t version; |
| 144 | uint8_t flags; |
| 145 | uint16_t ttime; /* Min settling time */ |
| 146 | uint8_t reserved; |
| 147 | uint8_t n_pst; |
| 148 | }; |
| 149 | |
| 150 | struct powernow_pst_s { |
| 151 | uint32_t signature; |
| 152 | uint8_t pll; |
| 153 | uint8_t fid; |
| 154 | uint8_t vid; |
| 155 | uint8_t n_states; |
| 156 | }; |
| 157 | |
| 158 | #endif /* !_X86_POWERNOW_H */ |
| 159 | |