Merge tag 'linux-kselftest-kunit-5.15-rc1' of git://git.kernel.org/pub/scm/linux...
[linux-2.6-microblaze.git] / arch / arm / kernel / isa.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  linux/arch/arm/kernel/isa.c
4  *
5  *  Copyright (C) 1999 Phil Blundell
6  *
7  *  ISA shared memory and I/O port support, and is required to support
8  *  iopl, inb, outb and friends in userspace via glibc emulation.
9  */
10 #include <linux/stddef.h>
11 #include <linux/types.h>
12 #include <linux/fs.h>
13 #include <linux/sysctl.h>
14 #include <linux/init.h>
15 #include <linux/io.h>
16
17 static unsigned int isa_membase, isa_portbase, isa_portshift;
18
19 static struct ctl_table ctl_isa_vars[4] = {
20         {
21                 .procname       = "membase",
22                 .data           = &isa_membase, 
23                 .maxlen         = sizeof(isa_membase),
24                 .mode           = 0444,
25                 .proc_handler   = proc_dointvec,
26         }, {
27                 .procname       = "portbase",
28                 .data           = &isa_portbase, 
29                 .maxlen         = sizeof(isa_portbase),
30                 .mode           = 0444,
31                 .proc_handler   = proc_dointvec,
32         }, {
33                 .procname       = "portshift",
34                 .data           = &isa_portshift, 
35                 .maxlen         = sizeof(isa_portshift),
36                 .mode           = 0444,
37                 .proc_handler   = proc_dointvec,
38         }, {}
39 };
40
41 static struct ctl_table_header *isa_sysctl_header;
42
43 static struct ctl_table ctl_isa[2] = {
44         {
45                 .procname       = "isa",
46                 .mode           = 0555,
47                 .child          = ctl_isa_vars,
48         }, {}
49 };
50
51 static struct ctl_table ctl_bus[2] = {
52         {
53                 .procname       = "bus",
54                 .mode           = 0555,
55                 .child          = ctl_isa,
56         }, {}
57 };
58
59 void __init
60 register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift)
61 {
62         isa_membase = membase;
63         isa_portbase = portbase;
64         isa_portshift = portshift;
65         isa_sysctl_header = register_sysctl_table(ctl_bus);
66 }