sys/dev/acpica/acpi_cpu_cstate.h

   1 /*-
   2  * Copyright (c) 2003-2005 Nate Lawson (SDG)
   3  * Copyright (c) 2001 Michael Smith
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/dev/acpica/acpi_cpu.c,v 1.72 2008/04/12 12:06:00 rpaulo Exp $
  28  */
  29
  30 #ifndef __ACPI_CPU_CSTATE_H__
  31 #define __ACPI_CPU_CSTATE_H__
  32
  33 #ifndef _SYS_BUS_H_
  34 #include <sys/bus.h>
  35 #endif
  36
  37 struct acpi_cst_cx {
  38     uint32_t            type;           /* C1-3+. */
  39     uint32_t            trans_lat;      /* Transition latency (usec). */
  40     int                 preamble;       /* ACPI_CST_CX_PREAMBLE_ */
  41     uint32_t            flags;          /* ACPI_CST_CX_FLAG_ */
  42     uint32_t            md_arg0;        /* machine depend arg */
  43     void                (*enter)(const struct acpi_cst_cx *);
  44     bus_space_tag_t     btag;
  45     bus_space_handle_t  bhand;
  46
  47     struct resource     *res;
  48     ACPI_GENERIC_ADDRESS gas;
  49     int                 rid;
  50     int                 res_type;
  51     uint32_t            power;          /* Power consumed (mW). */
  52 };
  53
  54 #define ACPI_CST_CX_PREAMBLE_NONE       0
  55 #define ACPI_CST_CX_PREAMBLE_WBINVD     1       /* flush cache */
  56 #define ACPI_CST_CX_PREAMBLE_BM_ARB     2       /* disable BM_ARB */
  57
  58 #define ACPI_CST_CX_FLAG_BM_STS         0x1     /* check BM_STS */
  59
  60 extern int      acpi_cst_quirks;        /* ACPI_CST_QUIRK_ */
  61
  62 #define ACPI_CST_QUIRK_NO_C3            0x1     /* C3(+) not usable. */
  63 #define ACPI_CST_QUIRK_NO_BM            0x2     /* No bus mastering. */
  64
  65 int     acpi_cst_md_cx_setup(struct acpi_cst_cx *);
  66
  67 extern int      acpi_cst_force_bmarb;
  68 extern int      acpi_cst_force_bmsts;
  69
  70 #endif  /* !__ACPI_CPU_CSTATE_H__ */