OsdHardware.c revision 213787 
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: head/sys/dev/acpica/Osd/OsdHardware.c 213787 2010-10-13 17:06:25Z jkim $");
34
35#include <contrib/dev/acpica/include/acpi.h>
36
37#include <machine/iodev.h>
38#include <machine/pci_cfgreg.h>
39
40/*
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.
44 *
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.
47 */
48
49ACPI_STATUS
50AcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width)
51{
52
53    switch (Width) {
54    case 8:
55	*Value = iodev_read_1(InPort);
56	break;
57    case 16:
58	*Value = iodev_read_2(InPort);
59	break;
60    case 32:
61	*Value = iodev_read_4(InPort);
62	break;
63    }
64
65    return (AE_OK);
66}
67
68ACPI_STATUS
69AcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32	Value, UINT32 Width)
70{
71
72    switch (Width) {
73    case 8:
74	iodev_write_1(OutPort, Value);
75	break;
76    case 16:
77	iodev_write_2(OutPort, Value);
78	break;
79    case 32:
80	iodev_write_4(OutPort, Value);
81	break;
82    }
83
84    return (AE_OK);
85}
86
87ACPI_STATUS
88AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, UINT64 *Value,
89    UINT32 Width)
90{
91
92    if (Width == 64)
93	return (AE_SUPPORT);
94
95    if (!pci_cfgregopen())
96	return (AE_NOT_EXIST);
97
98    *(UINT64 *)Value = pci_cfgregread(PciId->Bus, PciId->Device,
99	PciId->Function, Register, Width / 8);
100
101    return (AE_OK);
102}
103
104
105ACPI_STATUS
106AcpiOsWritePciConfiguration (ACPI_PCI_ID *PciId, UINT32 Register,
107    UINT64 Value, UINT32 Width)
108{
109
110    if (Width == 64)
111	return (AE_SUPPORT);
112
113    if (!pci_cfgregopen())
114    	return (AE_NOT_EXIST);
115
116    pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register,
117	Value, Width / 8);
118
119    return (AE_OK);
120}
121