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acpi_cpu.h revision 1.1 
      1 /* $NetBSD */
      2 
      3 /*-
      4  * Copyright (c) 2010 Jukka Ruohonen <jruohonen (at) iki.fi>
      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  *
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #ifndef _SYS_DEV_ACPI_ACPI_CPU_H
     31 #define _SYS_DEV_ACPI_ACPI_CPU_H
     32 
     33 /*
     34  * The following _PDC values are based on:
     35  *
     36  *   Intel Processor-Specific ACPI Interface
     37  *   Specification, September 2006, Revision 005.
     38  */
     39 #define ACPICPU_PDC_REVID         0x1
     40 #define ACPICPU_PDC_SMP           0xA
     41 #define ACPICPU_PDC_MSR           0x1
     42 
     43 #define ACPICPU_PDC_P_FFH         __BIT(0)	/* SpeedStep MSRs            */
     44 #define ACPICPU_PDC_C_C1_HALT     __BIT(1)	/* C1 "I/O then halt"        */
     45 #define ACPICPU_PDC_T_FFH         __BIT(2)	/* OnDemand throttling MSRs  */
     46 #define ACPICPU_PDC_C_C1PT        __BIT(3)	/* SMP C1, Px, and Tx (same) */
     47 #define ACPICPU_PDC_C_C2C3        __BIT(4)	/* SMP C2 and C3 (same)      */
     48 #define ACPICPU_PDC_P_SW          __BIT(5)	/* SMP Px (different)        */
     49 #define ACPICPU_PDC_C_SW          __BIT(6)	/* SMP Cx (different)        */
     50 #define ACPICPU_PDC_T_SW          __BIT(7)	/* SMP Tx (different)        */
     51 #define ACPICPU_PDC_C_C1_FFH      __BIT(8)	/* SMP C1 native beyond halt */
     52 #define ACPICPU_PDC_C_C2C3_FFH    __BIT(9)	/* SMP C2 and C2 native      */
     53 #define ACPICPU_PDC_P_HW          __BIT(11)	/* Px hardware coordination  */
     54 
     55 /*
     56  * Notify values.
     57  */
     58 #define ACPICPU_P_NOTIFY	 0x80		/* _PPC */
     59 #define ACPICPU_C_NOTIFY	 0x81		/* _CST */
     60 #define ACPICPU_T_NOTIFY	 0x82		/* _TPC */
     61 
     62 /*
     63  * C-states.
     64  */
     65 #define ACPICPU_C_C2_LATENCY_MAX 100		/* us */
     66 #define ACPICPU_C_C3_LATENCY_MAX 1000		/* us */
     67 
     68 #define ACPICPU_C_CSD_SW_ALL	 0xFC
     69 #define ACPICPU_C_CSD_SW_ANY	 0xFD
     70 #define ACPICPU_C_CSD_HW_ALL	 0xFE
     71 
     72 #define ACPICPU_C_STATE_HALT	 0x01
     73 #define ACPICPU_C_STATE_FFH	 0x02
     74 #define ACPICPU_C_STATE_SYSIO	 0x03
     75 
     76 /*
     77  * Global flags in the softc.
     78  */
     79 #define ACPICPU_FLAG_C		 __BIT(0)
     80 #define ACPICPU_FLAG_P		 __BIT(1)
     81 #define ACPICPU_FLAG_T		 __BIT(2)
     82 #define ACPICPU_FLAG_C_CST	 __BIT(3)
     83 #define ACPICPU_FLAG_C_FADT	 __BIT(4)
     84 #define ACPICPU_FLAG_C_BM	 __BIT(5)
     85 #define ACPICPU_FLAG_C_ARB	 __BIT(6)
     86 #define ACPICPU_FLAG_C_NOC3	 __BIT(7)
     87 #define ACPICPU_FLAG_C_MWAIT	 __BIT(8)
     88 #define ACPICPU_FLAG_C_C1E	 __BIT(9)
     89 
     90 struct acpicpu_cstate {
     91 	uint64_t		 cs_stat;
     92 	uint64_t		 cs_addr;
     93 	uint32_t		 cs_power;	/* mW */
     94 	uint32_t		 cs_latency;	/* us */
     95 	int			 cs_method;
     96 };
     97 
     98 struct acpicpu_csd {
     99 	uint32_t		 csd_domain;
    100 	uint32_t		 csd_coord;
    101 	uint32_t		 csd_ncpu;
    102 	uint32_t		 csd_index;
    103 };
    104 
    105 struct acpicpu_object {
    106 	uint32_t		 ao_procid;
    107 	uint32_t		 ao_pblklen;
    108 	uint32_t		 ao_pblkaddr;
    109 };
    110 
    111 struct acpicpu_softc {
    112 	device_t		 sc_dev;
    113 	struct acpi_devnode	*sc_node;
    114 	struct acpicpu_cstate	 sc_cstate[ACPI_C_STATE_COUNT];
    115 	struct acpicpu_object	 sc_object;
    116 	bus_space_tag_t		 sc_iot;
    117 	bus_space_handle_t	 sc_ioh;
    118 	uint32_t		 sc_sleep;
    119 	uint32_t		 sc_cpuid;
    120 	uint32_t		 sc_cap;
    121 	uint32_t		 sc_flags;
    122 };
    123 
    124 void		acpicpu_cstate_attach(device_t);
    125 int		acpicpu_cstate_detach(device_t);
    126 int		acpicpu_cstate_start(device_t);
    127 bool		acpicpu_cstate_suspend(device_t);
    128 bool		acpicpu_cstate_resume(device_t);
    129 void		acpicpu_cstate_callback(void *);
    130 void		acpicpu_cstate_idle(void);
    131 
    132 uint32_t	acpicpu_md_cap(void);
    133 uint32_t	acpicpu_md_quirks(void);
    134 uint32_t	acpicpu_md_cpus_running(void);
    135 int		acpicpu_md_idle_init(void);
    136 int		acpicpu_md_idle_start(void);
    137 int		acpicpu_md_idle_stop(void);
    138 void		acpicpu_md_idle_enter(int, int);
    139 
    140 #endif	/* !_SYS_DEV_ACPI_ACPI_CPU_H */
    141