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