The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/acpica/acpi_cpu_pstate.h

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    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__ */

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