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 .ctl_name = BUS_ISA_MEM_BASE, 26 .procname = "membase", 27 .data = &isa_membase, 28 .maxlen = sizeof(isa_membase), 29 .mode = 0444, 30 .proc_handler = &proc_dointvec, 31 }, { 32 .ctl_name = BUS_ISA_PORT_BASE, 33 .procname = "portbase", 34 .data = &isa_portbase, 35 .maxlen = sizeof(isa_portbase), 36 .mode = 0444, 37 .proc_handler = &proc_dointvec, 38 }, { 39 .ctl_name = BUS_ISA_PORT_SHIFT, 40 .procname = "portshift", 41 .data = &isa_portshift, 42 .maxlen = sizeof(isa_portshift), 43 .mode = 0444, 44 .proc_handler = &proc_dointvec, 45 }, {0} 46 }; 47 48 static struct ctl_table_header *isa_sysctl_header; 49 50 static ctl_table ctl_isa[2] = { 51 { 52 .ctl_name = CTL_BUS_ISA, 53 .procname = "isa", 54 .mode = 0555, 55 .child = ctl_isa_vars, 56 }, {0} 57 }; 58 59 static ctl_table ctl_bus[2] = { 60 { 61 .ctl_name = CTL_BUS, 62 .procname = "bus", 63 .mode = 0555, 64 .child = ctl_isa, 65 }, {0} 66 }; 67 68 void __init 69 register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift) 70 { 71 isa_membase = membase; 72 isa_portbase = portbase; 73 isa_portshift = portshift; 74 isa_sysctl_header = register_sysctl_table(ctl_bus); 75 } 76