2 * Copyright (c) 2000, 2001 Michael Smith
3 * Copyright (c) 2000 BSDi
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
27 * $FreeBSD: src/sys/dev/acpica/Osd/OsdHardware.c,v 1.13 2004/04/14 03:39:08 njl Exp $
31 * Hardware Abstraction
37 #include <bus/pci/pci_cfgreg.h>
38 #include <bus/pci/pcireg.h>
41 * ACPICA's rather gung-ho approach to hardware resource ownership is a little
42 * troublesome insofar as there is no easy way for us to know in advance
43 * exactly which I/O resources it's going to want to use.
45 * In order to deal with this, we ignore resource ownership entirely, and simply
46 * use the native I/O space accessor functionality. This is Evil, but it works.
48 * XXX use an intermediate #define for the tag/handle
52 #define ACPI_BUS_SPACE_IO I386_BUS_SPACE_IO
53 #define ACPI_BUS_HANDLE 0
56 #define ACPI_BUS_SPACE_IO X86_64_BUS_SPACE_IO
57 #define ACPI_BUS_HANDLE 0
61 AcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width)
65 *Value = bus_space_read_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
68 *Value = bus_space_read_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
71 *Value = bus_space_read_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
79 AcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32 Value, UINT32 Width)
83 bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
86 bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
89 bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
97 AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, UINT64 *Value,
100 int bytes = Width / 8;
105 if (!pci_cfgregopen())
106 return (AE_NOT_EXIST);
108 *Value = pci_cfgregread(PciId->Bus, PciId->Device,
109 PciId->Function, Register, bytes);
110 *Value &= (1 << (bytes * 8)) - 1;
117 AcpiOsWritePciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register,
118 UINT64 Value, UINT32 Width)
123 if (!pci_cfgregopen())
124 return (AE_NOT_EXIST);
126 pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register,
127 (uint32_t)Value, Width / 8); /* XXX casting */