sys/arch/x86/include/powernow.h

   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 */