powernow.h revision 1.1
1/* $NetBSD: powernow.h,v 1.1 2006/08/06 15:37:21 xtraeme Exp $ */ 2 3/*- 4 * Copyright (c) 2004 Martin V�giard. 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/* 96 * ACPI ctr_val status register to powernow k7 configuration 97 */ 98#define PN7_ACPI_CTRL_TO_VID(x) (((x) >> 5) & 0x1f) 99#define PN7_ACPI_CTRL_TO_SGTC(x) (((x) >> 10) & 0xffff) 100 101/* Bitfields used by K8 */ 102#define PN8_CTR_FID(x) ((x) & 0x3f) 103#define PN8_CTR_VID(x) (((x) & 0x1f) << 8) 104#define PN8_CTR_PENDING(x) (((x) & 1) << 32) 105 106#define PN8_STA_CFID(x) ((x) & 0x3f) 107#define PN8_STA_SFID(x) (((x) >> 8) & 0x3f) 108#define PN8_STA_MFID(x) (((x) >> 16) & 0x3f) 109#define PN8_STA_PENDING(x) (((x) >> 31) & 0x01) 110#define PN8_STA_CVID(x) (((x) >> 32) & 0x1f) 111#define PN8_STA_SVID(x) (((x) >> 40) & 0x1f) 112#define PN8_STA_MVID(x) (((x) >> 48) & 0x1f) 113 114#define COUNT_OFF_IRT(irt) DELAY(10 * (1 << (irt))) 115#define COUNT_OFF_VST(vst) DELAY(20 * (vst)) 116 117#define FID_TO_VCO_FID(fid) \ 118 (((fid) < 8) ? (8 + ((fid) << 1)) : (fid)) 119 120/* Reserved1 to powernow k8 configuration */ 121#define PN8_PSB_TO_RVO(x) ((x) & 0x03) 122#define PN8_PSB_TO_IRT(x) (((x) >> 2) & 0x03) 123#define PN8_PSB_TO_MVS(x) (((x) >> 4) & 0x03) 124#define PN8_PSB_TO_BATT(x) (((x) >> 6) & 0x03) 125 126/* ACPI ctr_val status register to powernow k8 configuration */ 127#define ACPI_PN8_CTRL_TO_FID(x) ((x) & 0x3f) 128#define ACPI_PN8_CTRL_TO_VID(x) (((x) >> 6) & 0x1f) 129#define ACPI_PN8_CTRL_TO_VST(x) (((x) >> 11) & 0x1f) 130#define ACPI_PN8_CTRL_TO_MVS(x) (((x) >> 18) & 0x03) 131#define ACPI_PN8_CTRL_TO_PLL(x) (((x) >> 20) & 0x7f) 132#define ACPI_PN8_CTRL_TO_RVO(x) (((x) >> 28) & 0x03) 133#define ACPI_PN8_CTRL_TO_IRT(x) (((x) >> 30) & 0x03) 134 135 136#define WRITE_FIDVID(fid, vid, ctrl) \ 137 wrmsr(MSR_AMDK7_FIDVID_CTL, \ 138 (((ctrl) << 32) | (1ULL << 16) | ((vid) << 8) | (fid))) 139 140#define POWERNOW_MAX_STATES 16 141 142struct powernow_state { 143 unsigned int freq; 144 uint8_t fid; 145 uint8_t vid; 146}; 147 148struct powernow_cpu_state { 149 struct powernow_state state_table[POWERNOW_MAX_STATES]; 150 unsigned int flags; 151 unsigned int fsb; 152 unsigned int irt; 153 unsigned int mvs; 154 unsigned int n_states; 155 unsigned int pll; 156 unsigned int rvo; 157 unsigned int sgtc; 158 unsigned int vst; 159 int low; 160}; 161 162struct powernow_psb_s { 163 char signature[10]; /* AMDK7PNOW! */ 164 uint8_t version; 165 uint8_t flags; 166 uint16_t ttime; /* Min settling time */ 167 uint8_t reserved; 168 uint8_t n_pst; 169}; 170 171struct powernow_pst_s { 172 uint32_t signature; 173 uint8_t fsb; 174 uint8_t pll; 175 uint8_t fid; 176 uint8_t vid; 177 uint8_t n_states; 178}; 179 180uint32_t powernow_probe(struct cpu_info *, uint32_t); 181int powernow_extflags(struct cpu_info *, uint32_t); 182 183#endif 184