| 1 | /* |
| 2 | * linux/arch/arm/kernel/isa.c |
| 3 | * |
| 4 | * Copyright (C) 1999 Phil Blundell |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * ISA shared memory and I/O port support, and is required to support |
| 12 | * iopl, inb, outb and friends in userspace via glibc emulation. |
| 13 | */ |
| 14 | #include <linux/stddef.h> |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/fs.h> |
| 17 | #include <linux/sysctl.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/io.h> |
| 20 | |
| 21 | static unsigned int isa_membase, isa_portbase, isa_portshift; |
| 22 | |
| 23 | static ctl_table ctl_isa_vars[4] = { |
| 24 | { |
| 25 | .procname = "membase", |
| 26 | .data = &isa_membase, |
| 27 | .maxlen = sizeof(isa_membase), |
| 28 | .mode = 0444, |
| 29 | .proc_handler = proc_dointvec, |
| 30 | }, { |
| 31 | .procname = "portbase", |
| 32 | .data = &isa_portbase, |
| 33 | .maxlen = sizeof(isa_portbase), |
| 34 | .mode = 0444, |
| 35 | .proc_handler = proc_dointvec, |
| 36 | }, { |
| 37 | .procname = "portshift", |
| 38 | .data = &isa_portshift, |
| 39 | .maxlen = sizeof(isa_portshift), |
| 40 | .mode = 0444, |
| 41 | .proc_handler = proc_dointvec, |
| 42 | }, {} |
| 43 | }; |
| 44 | |
| 45 | static struct ctl_table_header *isa_sysctl_header; |
| 46 | |
| 47 | static ctl_table ctl_isa[2] = { |
| 48 | { |
| 49 | .procname = "isa", |
| 50 | .mode = 0555, |
| 51 | .child = ctl_isa_vars, |
| 52 | }, {} |
| 53 | }; |
| 54 | |
| 55 | static ctl_table ctl_bus[2] = { |
| 56 | { |
| 57 | .procname = "bus", |
| 58 | .mode = 0555, |
| 59 | .child = ctl_isa, |
| 60 | }, {} |
| 61 | }; |
| 62 | |
| 63 | void __init |
| 64 | register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift) |
| 65 | { |
| 66 | isa_membase = membase; |
| 67 | isa_portbase = portbase; |
| 68 | isa_portshift = portshift; |
| 69 | isa_sysctl_header = register_sysctl_table(ctl_bus); |
| 70 | } |