sys/dev/acpica5/acpi_cpu_pstate.h

   1 /*
   2  * Copyright (c) 2009 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   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
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #ifndef __ACPI_CPU_PSTATE_H__
  36 #define __ACPI_CPU_PSTATE_H__
  37
  38 #ifndef _SYS_BUS_H_
  39 #include <sys/bus.h>
  40 #endif
  41
  42 struct acpi_pstate {
  43         uint32_t                st_freq;
  44         uint32_t                st_power;
  45         uint32_t                st_xsit_lat;
  46         uint32_t                st_bm_lat;
  47         uint32_t                st_cval;
  48         uint32_t                st_sval;
  49 };
  50
  51 struct acpi_pst_res {
  52         ACPI_GENERIC_ADDRESS    pr_gas;
  53         struct resource         *pr_res;
  54         int                     pr_rid;
  55         bus_space_tag_t         pr_bt;
  56         bus_space_handle_t      pr_bh;
  57 };
  58
  59 struct acpi_pst_md {
  60         int                     (*pmd_check_csr)
  61                                 (const struct acpi_pst_res *,
  62                                  const struct acpi_pst_res *);
  63         int                     (*pmd_check_pstates)
  64                                 (const struct acpi_pstate *, int);
  65
  66         int                     (*pmd_init)
  67                                 (const struct acpi_pst_res *,
  68                                  const struct acpi_pst_res *);
  69
  70         int                     (*pmd_set_pstate)
  71                                 (const struct acpi_pst_res *,
  72                                  const struct acpi_pst_res *,
  73                                  const struct acpi_pstate *);
  74
  75         const struct acpi_pstate *(*pmd_get_pstate)
  76                                 (const struct acpi_pst_res *,
  77                                  const struct acpi_pstate *, int);
  78 };
  79
  80 const struct acpi_pst_md        *acpi_pst_md_probe(void);
  81
  82 #endif  /* !__ACPI_CPU_PSTATE_H__ */