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: src/sys/dev/acpica/Osd/OsdHardware.c,v 1.13 2004/04/14 03:39:08 njl Exp $
28 */
29
30 /*
31 * Hardware Abstraction
32 */
33
34 #include "acpi.h"
35
36 #include <sys/bus.h>
37 #include <bus/pci/pci_cfgreg.h>
38 #include <bus/pci/pcireg.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 __x86_64__
52 #define ACPI_BUS_SPACE_IO X86_64_BUS_SPACE_IO
53 #define ACPI_BUS_HANDLE 0
54 #endif
55
56 ACPI_STATUS
AcpiOsReadPort(ACPI_IO_ADDRESS InPort,UINT32 * Value,UINT32 Width)57 AcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width)
58 {
59 switch (Width) {
60 case 8:
61 *Value = bus_space_read_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
62 break;
63 case 16:
64 *Value = bus_space_read_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
65 break;
66 case 32:
67 *Value = bus_space_read_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, InPort);
68 break;
69 }
70
71 return (AE_OK);
72 }
73
74 ACPI_STATUS
AcpiOsWritePort(ACPI_IO_ADDRESS OutPort,UINT32 Value,UINT32 Width)75 AcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32 Value, UINT32 Width)
76 {
77 switch (Width) {
78 case 8:
79 bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
80 break;
81 case 16:
82 bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
83 break;
84 case 32:
85 bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value);
86 break;
87 }
88
89 return (AE_OK);
90 }
91
92 ACPI_STATUS
AcpiOsReadPciConfiguration(ACPI_PCI_ID * PciId,UINT32 Register,UINT64 * Value,UINT32 Width)93 AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, UINT64 *Value,
94 UINT32 Width)
95 {
96 int bytes = Width / 8;
97
98 if (Width == 64)
99 return (AE_SUPPORT);
100
101 if (!pci_cfgregopen())
102 return (AE_NOT_EXIST);
103
104 *Value = pci_cfgregread(PciId->Bus, PciId->Device,
105 PciId->Function, Register, bytes);
106 *Value &= (1 << (bytes * 8)) - 1;
107
108 return (AE_OK);
109 }
110
111
112 ACPI_STATUS
AcpiOsWritePciConfiguration(ACPI_PCI_ID * PciId,UINT32 Register,UINT64 Value,UINT32 Width)113 AcpiOsWritePciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register,
114 UINT64 Value, UINT32 Width)
115 {
116 if (Width == 64)
117 return (AE_SUPPORT);
118
119 if (!pci_cfgregopen())
120 return (AE_NOT_EXIST);
121
122 pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register,
123 (uint32_t)Value, Width / 8); /* XXX casting */
124
125 return (AE_OK);
126 }
127
128 ACPI_STATUS
AcpiOsEnterSleep(UINT8 SleepState,UINT32 RegaValue,UINT32 RegbValue)129 AcpiOsEnterSleep (
130 UINT8 SleepState,
131 UINT32 RegaValue,
132 UINT32 RegbValue)
133 {
134 return (AE_OK);
135 }
136