/* $NetBSD: acpi_cpu.h,v 1.12 2010/08/10 02:42:05 jruoho Exp $ */ /*- * Copyright (c) 2010 Jukka Ruohonen * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 _SYS_DEV_ACPI_ACPI_CPU_H #define _SYS_DEV_ACPI_ACPI_CPU_H /* * The following _PDC values are based on: * * Intel Corporation: Intel Processor-Specific ACPI * Interface Specification, September 2006, Revision 005. * * http://download.intel.com/technology/IAPC/acpi/downloads/30222305.pdf * * For other relevant reading, see for instance: * * Advanced Micro Devices: Using ACPI to Report APML P-State * Limit Changes to Operating Systems and VMM's. August 7, 2009. * * http://developer.amd.com/Assets/ACPI-APML-PState-rev12.pdf */ #define ACPICPU_PDC_REVID 0x1 #define ACPICPU_PDC_SMP 0xA #define ACPICPU_PDC_MSR 0x1 #define ACPICPU_PDC_P_FFH __BIT(0) /* SpeedStep MSRs */ #define ACPICPU_PDC_C_C1_HALT __BIT(1) /* C1 "I/O then halt" */ #define ACPICPU_PDC_T_FFH __BIT(2) /* OnDemand throttling MSRs */ #define ACPICPU_PDC_C_C1PT __BIT(3) /* SMP C1, Px, and Tx (same) */ #define ACPICPU_PDC_C_C2C3 __BIT(4) /* SMP C2 and C3 (same) */ #define ACPICPU_PDC_P_SW __BIT(5) /* SMP Px (different) */ #define ACPICPU_PDC_C_SW __BIT(6) /* SMP Cx (different) */ #define ACPICPU_PDC_T_SW __BIT(7) /* SMP Tx (different) */ #define ACPICPU_PDC_C_C1_FFH __BIT(8) /* SMP C1 native beyond halt */ #define ACPICPU_PDC_C_C2C3_FFH __BIT(9) /* SMP C2 and C2 native */ #define ACPICPU_PDC_P_HW __BIT(11) /* Px hardware coordination */ #define ACPICPU_PDC_GAS_HW __BIT(0) /* HW-coordinated state */ #define ACPICPU_PDC_GAS_BM __BIT(1) /* Bus master check required */ /* * Notify values. */ #define ACPICPU_P_NOTIFY 0x80 /* _PPC */ #define ACPICPU_C_NOTIFY 0x81 /* _CST */ #define ACPICPU_T_NOTIFY 0x82 /* _TPC */ /* * C-states. */ #define ACPICPU_C_C2_LATENCY_MAX 100 /* us */ #define ACPICPU_C_C3_LATENCY_MAX 1000 /* us */ #define ACPICPU_C_STATE_HALT 0x01 #define ACPICPU_C_STATE_FFH 0x02 #define ACPICPU_C_STATE_SYSIO 0x03 /* * P-states. */ #define ACPICPU_P_STATE_RETRY 100 #define ACPICPU_P_STATE_UNKNOWN 0x0 /* * Flags. */ #define ACPICPU_FLAG_C __BIT(0) /* C-states supported */ #define ACPICPU_FLAG_P __BIT(1) /* P-states supported */ #define ACPICPU_FLAG_T __BIT(2) /* T-states supported */ #define ACPICPU_FLAG_C_CST __BIT(3) /* C-states with _CST */ #define ACPICPU_FLAG_C_FADT __BIT(4) /* C-states with FADT */ #define ACPICPU_FLAG_C_BM __BIT(5) /* Bus master control */ #define ACPICPU_FLAG_C_BM_STS __BIT(6) /* Bus master check required */ #define ACPICPU_FLAG_C_ARB __BIT(7) /* Bus master arbitration */ #define ACPICPU_FLAG_C_NOC3 __BIT(8) /* C3 disabled (quirk) */ #define ACPICPU_FLAG_C_FFH __BIT(9) /* MONITOR/MWAIT supported */ #define ACPICPU_FLAG_C_C1E __BIT(10) /* AMD C1E detected */ #define ACPICPU_FLAG_P_PPC __BIT(11) /* Dynamic freq. with _PPC */ #define ACPICPU_FLAG_P_FFH __BIT(12) /* EST etc. supported */ /* * This is AML_RESOURCE_GENERIC_REGISTER, * included here separately for convenience. */ struct acpicpu_reg { uint8_t reg_desc; uint16_t reg_reslen; uint8_t reg_spaceid; uint8_t reg_bitwidth; uint8_t reg_bitoffset; uint8_t reg_accesssize; uint64_t reg_addr; } __packed; struct acpicpu_cstate { struct evcnt cs_evcnt; char cs_name[EVCNT_STRING_MAX]; uint64_t cs_addr; uint32_t cs_power; /* mW */ uint32_t cs_latency; /* us */ int cs_method; int cs_flags; }; struct acpicpu_pstate { struct evcnt ps_evcnt; char ps_name[EVCNT_STRING_MAX]; uint32_t ps_freq; /* MHz */ uint32_t ps_power; /* mW */ uint32_t ps_latency; /* us */ uint32_t ps_latency_bm; /* us */ uint32_t ps_control; uint32_t ps_status; }; struct acpicpu_object { uint32_t ao_procid; uint32_t ao_pblklen; uint32_t ao_pblkaddr; }; struct acpicpu_softc { device_t sc_dev; struct acpi_devnode *sc_node; struct acpicpu_object sc_object; struct acpicpu_cstate sc_cstate[ACPI_C_STATE_COUNT]; uint32_t sc_cstate_sleep; struct acpicpu_pstate *sc_pstate; struct acpicpu_reg sc_pstate_control; struct acpicpu_reg sc_pstate_status; uint32_t sc_pstate_current; uint32_t sc_pstate_count; uint32_t sc_pstate_max; kmutex_t sc_mtx; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; uint32_t sc_cap; uint32_t sc_flags; cpuid_t sc_cpuid; bool sc_cold; bool sc_mapped; }; void acpicpu_cstate_attach(device_t); int acpicpu_cstate_detach(device_t); int acpicpu_cstate_start(device_t); bool acpicpu_cstate_suspend(device_t); bool acpicpu_cstate_resume(device_t); void acpicpu_cstate_callback(void *); void acpicpu_cstate_idle(void); void acpicpu_pstate_attach(device_t); int acpicpu_pstate_detach(device_t); int acpicpu_pstate_start(device_t); bool acpicpu_pstate_suspend(device_t); bool acpicpu_pstate_resume(device_t); void acpicpu_pstate_callback(void *); int acpicpu_pstate_get(struct acpicpu_softc *, uint32_t *); int acpicpu_pstate_set(struct acpicpu_softc *, uint32_t); uint32_t acpicpu_md_cap(void); uint32_t acpicpu_md_quirks(void); uint32_t acpicpu_md_cpus_running(void); int acpicpu_md_idle_start(void); int acpicpu_md_idle_stop(void); void acpicpu_md_idle_enter(int, int); int acpicpu_md_pstate_start(void); int acpicpu_md_pstate_stop(void); int acpicpu_md_pstate_get(struct acpicpu_softc *, uint32_t *); int acpicpu_md_pstate_set(struct acpicpu_pstate *); #endif /* !_SYS_DEV_ACPI_ACPI_CPU_H */