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: releng/10.4/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
49 ACPI_STATUS
50 AcpiOsReadPort(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
68 ACPI_STATUS
69 AcpiOsWritePort(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
87 ACPI_STATUS
88 AcpiOsReadPciConfiguration(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
105 ACPI_STATUS
106 AcpiOsWritePciConfiguration (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 }
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