OsdHardware.c revision 92666 
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 *	$FreeBSD: head/sys/dev/acpica/Osd/OsdHardware.c 92666 2002-03-19 11:02:06Z peter $
28 */
29
30/*
31 * 6.7 : Hardware Abstraction
32 */
33
34#include "acpi.h"
35
36#include <machine/bus_pio.h>
37#include <machine/bus.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 * XXX use an intermediate #define for the tag/handle
49 */
50
51#ifdef __i386__
52#define ACPI_BUS_SPACE_IO	I386_BUS_SPACE_IO
53#define ACPI_BUS_HANDLE		0
54#endif
55#ifdef __ia64__
56#define ACPI_BUS_SPACE_IO	IA64_BUS_SPACE_IO
57#define ACPI_BUS_HANDLE		0
58#endif
59
60ACPI_STATUS
61AcpiOsReadPort (
62    ACPI_IO_ADDRESS	InPort,
63    void		*Value,
64    UINT32		Width)
65{
66    switch (Width) {
67    case 8:
68        *(u_int8_t *)Value = bus_space_read_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
69        break;
70    case 16:
71        *(u_int16_t *)Value = bus_space_read_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
72        break;
73    case 32:
74        *(u_int32_t *)Value = bus_space_read_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
75        break;
76    default:
77        /* debug trap goes here */
78	break;
79    }
80
81    return(AE_OK);
82}
83
84ACPI_STATUS
85AcpiOsWritePort (
86    ACPI_IO_ADDRESS	OutPort,
87    ACPI_INTEGER	Value,
88    UINT32		Width)
89{
90    switch (Width) {
91    case 8:
92        bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
93        break;
94    case 16:
95        bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
96        break;
97    case 32:
98        bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
99        break;
100    default:
101        /* debug trap goes here */
102	break;
103    }
104
105    return(AE_OK);
106}
107
108ACPI_STATUS
109AcpiOsReadPciConfiguration (
110    ACPI_PCI_ID		*PciId,
111    UINT32		Register,
112    void		*Value,
113    UINT32		Width)
114{
115    u_int32_t	byte_width = Width / 8;
116    u_int32_t	val;
117
118    if (!pci_cfgregopen())
119        return(AE_NOT_EXIST);
120
121    val = pci_cfgregread(PciId->Bus, PciId->Device, PciId->Function, Register, byte_width);
122    switch (Width) {
123    case 8:
124	*(u_int8_t *)Value = val & 0xff;
125	break;
126    case 16:
127	*(u_int16_t *)Value = val & 0xffff;
128	break;
129    case 32:
130	*(u_int32_t *)Value = val;
131	break;
132    default:
133	/* debug trap goes here */
134	break;
135    }
136
137
138    return(AE_OK);
139}
140
141
142ACPI_STATUS
143AcpiOsWritePciConfiguration (
144    ACPI_PCI_ID		*PciId,
145    UINT32		Register,
146    ACPI_INTEGER	Value,
147    UINT32		Width)
148{
149    u_int32_t	byte_width = Width / 8;
150
151    if (!pci_cfgregopen())
152    	return(AE_NOT_EXIST);
153
154    pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register, Value, byte_width);
155
156    return(AE_OK);
157}
158