OsdHardware.c revision 213783 
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 213783 2010-10-13 16:30:41Z jkim $");
34
35#include <contrib/dev/acpica/include/acpi.h>
36
37#include <sys/bus.h>
38#include <sys/kernel.h>
39#include <machine/iodev.h>
40#include <machine/pci_cfgreg.h>
41#include <dev/acpica/acpivar.h>
42#include <dev/pci/pcireg.h>
43
44/*
45 * ACPICA's rather gung-ho approach to hardware resource ownership is a little
46 * troublesome insofar as there is no easy way for us to know in advance
47 * exactly which I/O resources it's going to want to use.
48 *
49 * In order to deal with this, we ignore resource ownership entirely, and simply
50 * use the native I/O space accessor functionality.  This is Evil, but it works.
51 */
52
53ACPI_STATUS
54AcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width)
55{
56
57    switch (Width) {
58    case 8:
59	*Value = iodev_read_1(InPort);
60	break;
61    case 16:
62	*Value = iodev_read_2(InPort);
63	break;
64    case 32:
65	*Value = iodev_read_4(InPort);
66	break;
67    }
68
69    return (AE_OK);
70}
71
72ACPI_STATUS
73AcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32	Value, UINT32 Width)
74{
75
76    switch (Width) {
77    case 8:
78	iodev_write_1(OutPort, Value);
79	break;
80    case 16:
81	iodev_write_2(OutPort, Value);
82	break;
83    case 32:
84	iodev_write_4(OutPort, Value);
85	break;
86    }
87
88    return (AE_OK);
89}
90
91ACPI_STATUS
92AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, UINT64 *Value,
93    UINT32 Width)
94{
95
96    if (Width == 64)
97	return (AE_SUPPORT);
98
99    if (!pci_cfgregopen())
100	return (AE_NOT_EXIST);
101
102    *(UINT64 *)Value = pci_cfgregread(PciId->Bus, PciId->Device,
103	PciId->Function, Register, Width / 8);
104
105    return (AE_OK);
106}
107
108
109ACPI_STATUS
110AcpiOsWritePciConfiguration (ACPI_PCI_ID *PciId, UINT32 Register,
111    UINT64 Value, UINT32 Width)
112{
113
114    if (Width == 64)
115	return (AE_SUPPORT);
116
117    if (!pci_cfgregopen())
118    	return (AE_NOT_EXIST);
119
120    pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register,
121	Value, Width / 8);
122
123    return (AE_OK);
124}
125