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/Osd/OsdHardware.c

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    1 /*-
    2  * Copyright (c) 2000, 2001 Michael Smith
    3  * Copyright (c) 2000 BSDi
    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 
   28 /*
   29  * 6.7 : Hardware Abstraction
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD$");
   34 
   35 #include <contrib/dev/acpica/include/acpi.h>
   36 
   37 #include <machine/iodev.h>
   38 #include <machine/pci_cfgreg.h>
   39 
   40 extern int      acpi_susp_bounce;
   41 
   42 ACPI_STATUS
   43 AcpiOsEnterSleep(UINT8 SleepState, UINT32 RegaValue, UINT32 RegbValue)
   44 {
   45 
   46         /* If testing device suspend only, back out of everything here. */
   47         if (acpi_susp_bounce)
   48                 return (AE_CTRL_TERMINATE);
   49 
   50         return (AE_OK);
   51 }
   52 
   53 /*
   54  * ACPICA's rather gung-ho approach to hardware resource ownership is a little
   55  * troublesome insofar as there is no easy way for us to know in advance
   56  * exactly which I/O resources it's going to want to use.
   57  *
   58  * In order to deal with this, we ignore resource ownership entirely, and simply
   59  * use the native I/O space accessor functionality.  This is Evil, but it works.
   60  */
   61 
   62 ACPI_STATUS
   63 AcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width)
   64 {
   65 
   66     switch (Width) {
   67     case 8:
   68         *Value = iodev_read_1(InPort);
   69         break;
   70     case 16:
   71         *Value = iodev_read_2(InPort);
   72         break;
   73     case 32:
   74         *Value = iodev_read_4(InPort);
   75         break;
   76     }
   77 
   78     return (AE_OK);
   79 }
   80 
   81 ACPI_STATUS
   82 AcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32 Value, UINT32 Width)
   83 {
   84 
   85     switch (Width) {
   86     case 8:
   87         iodev_write_1(OutPort, Value);
   88         break;
   89     case 16:
   90         iodev_write_2(OutPort, Value);
   91         break;
   92     case 32:
   93         iodev_write_4(OutPort, Value);
   94         break;
   95     }
   96 
   97     return (AE_OK);
   98 }
   99 
  100 ACPI_STATUS
  101 AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, UINT64 *Value,
  102     UINT32 Width)
  103 {
  104 
  105 #ifdef __aarch64__
  106     /* ARM64TODO: Add pci support */
  107     return (AE_SUPPORT);
  108 #else
  109     if (Width == 64)
  110         return (AE_SUPPORT);
  111 
  112     if (!pci_cfgregopen())
  113         return (AE_NOT_EXIST);
  114 
  115     *(UINT64 *)Value = pci_cfgregread(PciId->Bus, PciId->Device,
  116         PciId->Function, Register, Width / 8);
  117 
  118     return (AE_OK);
  119 #endif
  120 }
  121 
  122 
  123 ACPI_STATUS
  124 AcpiOsWritePciConfiguration (ACPI_PCI_ID *PciId, UINT32 Register,
  125     UINT64 Value, UINT32 Width)
  126 {
  127 
  128 #ifdef __aarch64__
  129     /* ARM64TODO: Add pci support */
  130     return (AE_SUPPORT);
  131 #else
  132     if (Width == 64)
  133         return (AE_SUPPORT);
  134 
  135     if (!pci_cfgregopen())
  136         return (AE_NOT_EXIST);
  137 
  138     pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register,
  139         Value, Width / 8);
  140 
  141     return (AE_OK);
  142 #endif
  143 }

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