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 20 static unsigned int isa_membase, isa_portbase, isa_portshift; 21 22 static ctl_table ctl_isa_vars[4] = { 23 { 24 .ctl_name = BUS_ISA_MEM_BASE, 25 .procname = "membase", 26 .data = &isa_membase, 27 .maxlen = sizeof(isa_membase), 28 .mode = 0444, 29 .proc_handler = &proc_dointvec, 30 }, { 31 .ctl_name = BUS_ISA_PORT_BASE, 32 .procname = "portbase", 33 .data = &isa_portbase, 34 .maxlen = sizeof(isa_portbase), 35 .mode = 0444, 36 .proc_handler = &proc_dointvec, 37 }, { 38 .ctl_name = BUS_ISA_PORT_SHIFT, 39 .procname = "portshift", 40 .data = &isa_portshift, 41 .maxlen = sizeof(isa_portshift), 42 .mode = 0444, 43 .proc_handler = &proc_dointvec, 44 }, {0} 45 }; 46 47 static struct ctl_table_header *isa_sysctl_header; 48 49 static ctl_table ctl_isa[2] = { 50 { 51 .ctl_name = CTL_BUS_ISA, 52 .procname = "isa", 53 .mode = 0555, 54 .child = ctl_isa_vars, 55 }, {0} 56 }; 57 58 static ctl_table ctl_bus[2] = { 59 { 60 .ctl_name = CTL_BUS, 61 .procname = "bus", 62 .mode = 0555, 63 .child = ctl_isa, 64 }, {0} 65 }; 66 67 void __init 68 register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift) 69 { 70 isa_membase = membase; 71 isa_portbase = portbase; 72 isa_portshift = portshift; 73 isa_sysctl_header = register_sysctl_table(ctl_bus); 74 } 75