/* $NetBSD: powernow.h,v 1.9 2007/03/24 15:35:15 xtraeme 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) /* * ACPI ctr_val status register to powernow k7 configuration */ #define PN7_ACPI_CTRL_TO_VID(x) (((x) >> 5) & 0x1f) #define PN7_ACPI_CTRL_TO_SGTC(x) (((x) >> 10) & 0xffff) /* 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) /* ACPI ctr_val status register to powernow k8 configuration */ #define ACPI_PN8_CTRL_TO_FID(x) ((x) & 0x3f) #define ACPI_PN8_CTRL_TO_VID(x) (((x) >> 6) & 0x1f) #define ACPI_PN8_CTRL_TO_VST(x) (((x) >> 11) & 0x1f) #define ACPI_PN8_CTRL_TO_MVS(x) (((x) >> 18) & 0x03) #define ACPI_PN8_CTRL_TO_PLL(x) (((x) >> 20) & 0x7f) #define ACPI_PN8_CTRL_TO_RVO(x) (((x) >> 28) & 0x03) #define ACPI_PN8_CTRL_TO_IRT(x) (((x) >> 30) & 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; }; int powernow_probe(struct cpu_info *); /* i386/i386/powernow_k7.c */ void k7_powernow_init(void); void k7_powernow_destroy(void); /* x86/x86/powernow_k8.c */ void k8_powernow_init(void); void k8_powernow_destroy(void); #endif