OsdHardware.c revision 80071 
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 80071 2001-07-21 04:10:01Z msmith $
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#define ACPI_BUS_SPACE_IO	I386_BUS_SPACE_IO
52#define ACPI_BUS_HANDLE		0
53
54ACPI_STATUS
55AcpiOsReadPort (
56    ACPI_IO_ADDRESS	InPort,
57    void		*Value,
58    UINT32		Width)
59{
60    switch (Width) {
61    case 8:
62        *(u_int8_t *)Value = bus_space_read_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
63        break;
64    case 16:
65        *(u_int16_t *)Value = bus_space_read_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
66        break;
67    case 32:
68        *(u_int32_t *)Value = bus_space_read_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
69        break;
70    default:
71        /* debug trap goes here */
72    }
73
74    return(AE_OK);
75}
76
77ACPI_STATUS
78AcpiOsWritePort (
79    ACPI_IO_ADDRESS	OutPort,
80    NATIVE_UINT		Value,
81    UINT32		Width)
82{
83    switch (Width) {
84    case 8:
85        bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
86        break;
87    case 16:
88        bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
89        break;
90    case 32:
91        bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
92        break;
93    default:
94        /* debug trap goes here */
95    }
96
97    return(AE_OK);
98}
99
100ACPI_STATUS
101AcpiOsReadPciConfiguration (
102    ACPI_PCI_ID		*PciId,
103    UINT32		Register,
104    void		*Value,
105    UINT32		Width)
106{
107    u_int32_t	byte_width = Width / 8;
108    u_int32_t	val;
109
110    if (!pci_cfgregopen())
111        return(AE_NOT_EXIST);
112
113    val = pci_cfgregread(PciId->Bus, PciId->Device, PciId->Function, Register, byte_width);
114    switch (Width) {
115    case 8:
116	*(u_int8_t *)Value = val & 0xff;
117	break;
118    case 16:
119	*(u_int16_t *)Value = val & 0xffff;
120	break;
121    case 32:
122	*(u_int32_t *)Value = val;
123	break;
124    default:
125	/* debug trap goes here */
126    }
127
128
129    return(AE_OK);
130}
131
132
133ACPI_STATUS
134AcpiOsWritePciConfiguration (
135    ACPI_PCI_ID		*PciId,
136    UINT32		Register,
137    NATIVE_UINT		Value,
138    UINT32		Width)
139{
140    u_int32_t	byte_width = Width / 8;
141
142    if (!pci_cfgregopen())
143    	return(AE_NOT_EXIST);
144
145    pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register, Value, byte_width);
146
147    return(AE_OK);
148}
149