159 lines
5.4 KiB
C
159 lines
5.4 KiB
C
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/* $NetBSD: powernow.h,v 1.13 2011/02/24 10:56:02 jruoho Exp $ */
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/*-
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* Copyright (c) 2004 Martin V<EFBFBD>giard.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2004-2005 Bruno Ducrot
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* Copyright (c) 2004 FUKUDA Nobuhiko <nfukuda@spa.is.uec.ac.jp>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _X86_POWERNOW_H
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#define _X86_POWERNOW_H
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#ifdef POWERNOW_DEBUG
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#define DPRINTF(x) do { printf x; } while (0)
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#else
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#define DPRINTF(x)
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#endif
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#define BIOS_START 0xe0000
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#define BIOS_LEN 0x20000
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#define BIOS_STEP 16
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/*
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* MSRs and bits used by Powernow technology
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*/
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#define MSR_AMDK7_FIDVID_CTL 0xc0010041
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#define MSR_AMDK7_FIDVID_STATUS 0xc0010042
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#define AMD_PN_FID_VID 0x06
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#define AMD_ERRATA_A0_CPUSIG 0x660
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#define PN7_FLAG_ERRATA_A0 0x01
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#define PN7_FLAG_DESKTOP_VRM 0x02
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/* Bitfields used by K7 */
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#define PN7_PSB_VERSION 0x12
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#define PN7_CTR_FID(x) ((x) & 0x1f)
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#define PN7_CTR_VID(x) (((x) & 0x1f) << 8)
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#define PN7_CTR_FIDC 0x00010000
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#define PN7_CTR_VIDC 0x00020000
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#define PN7_CTR_FIDCHRATIO 0x00100000
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#define PN7_CTR_SGTC(x) (((uint64_t)(x) & 0x000fffff) << 32)
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#define PN7_STA_CFID(x) ((x) & 0x1f)
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#define PN7_STA_SFID(x) (((x) >> 8) & 0x1f)
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#define PN7_STA_MFID(x) (((x) >> 16) & 0x1f)
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#define PN7_STA_CVID(x) (((x) >> 32) & 0x1f)
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#define PN7_STA_SVID(x) (((x) >> 40) & 0x1f)
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#define PN7_STA_MVID(x) (((x) >> 48) & 0x1f)
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/* Bitfields used by K8 */
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#define PN8_CTR_FID(x) ((x) & 0x3f)
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#define PN8_CTR_VID(x) (((x) & 0x1f) << 8)
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#define PN8_CTR_PENDING(x) (((x) & 1) << 32)
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#define PN8_STA_CFID(x) ((x) & 0x3f)
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#define PN8_STA_SFID(x) (((x) >> 8) & 0x3f)
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#define PN8_STA_MFID(x) (((x) >> 16) & 0x3f)
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#define PN8_STA_PENDING(x) (((x) >> 31) & 0x01)
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#define PN8_STA_CVID(x) (((x) >> 32) & 0x1f)
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#define PN8_STA_SVID(x) (((x) >> 40) & 0x1f)
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#define PN8_STA_MVID(x) (((x) >> 48) & 0x1f)
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#define COUNT_OFF_IRT(irt) DELAY(10 * (1 << (irt)))
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#define COUNT_OFF_VST(vst) DELAY(20 * (vst))
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#define FID_TO_VCO_FID(fid) \
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(((fid) < 8) ? (8 + ((fid) << 1)) : (fid))
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/* Reserved1 to powernow k8 configuration */
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#define PN8_PSB_TO_RVO(x) ((x) & 0x03)
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#define PN8_PSB_TO_IRT(x) (((x) >> 2) & 0x03)
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#define PN8_PSB_TO_MVS(x) (((x) >> 4) & 0x03)
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#define PN8_PSB_TO_BATT(x) (((x) >> 6) & 0x03)
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#define POWERNOW_MAX_STATES 16
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struct powernow_state {
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int freq;
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uint8_t fid;
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uint8_t vid;
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};
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struct powernow_cpu_state {
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struct powernow_state state_table[POWERNOW_MAX_STATES];
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unsigned int fsb;
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unsigned int n_states;
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unsigned int sgtc;
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unsigned int vst;
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unsigned int mvs;
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unsigned int pll;
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unsigned int rvo;
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unsigned int irt;
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int low;
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};
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struct powernow_psb_s {
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char signature[10]; /* AMDK7PNOW! */
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uint8_t version;
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uint8_t flags;
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uint16_t ttime; /* Min settling time */
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uint8_t reserved;
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uint8_t n_pst;
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};
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struct powernow_pst_s {
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uint32_t signature;
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uint8_t pll;
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uint8_t fid;
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uint8_t vid;
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uint8_t n_states;
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};
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#endif /* !_X86_POWERNOW_H */
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