arch/arm/kernel/isa.c

   1 /*
   2  *  linux/arch/arm/kernel/isa.c
   3  *
   4  *  Copyright (C) 1999 Phil Blundell
   5  *
   6  *  ISA shared memory and I/O port support
   7  */
   8
   9 /*
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version
  13  * 2 of the License, or (at your option) any later version.
  14  */
  15
  16 /*
  17  * Nothing about this is actually ARM specific.  One day we could move
  18  * it into kernel/resource.c or some place like that.
  19  */
  20
  21 #include <linux/stddef.h>
  22 #include <linux/types.h>
  23 #include <linux/fs.h>
  24 #include <linux/sysctl.h>
  25 #include <linux/init.h>
  26
  27 static unsigned int isa_membase, isa_portbase, isa_portshift;
  28
  29 static ctl_table ctl_isa_vars[4] = {
  30         {BUS_ISA_MEM_BASE, "membase", &isa_membase,
  31          sizeof(isa_membase), 0444, NULL, &proc_dointvec},
  32         {BUS_ISA_PORT_BASE, "portbase", &isa_portbase,
  33          sizeof(isa_portbase), 0444, NULL, &proc_dointvec},
  34         {BUS_ISA_PORT_SHIFT, "portshift", &isa_portshift,
  35          sizeof(isa_portshift), 0444, NULL, &proc_dointvec},
  36         {0}
  37 };
  38
  39 static struct ctl_table_header *isa_sysctl_header;
  40
  41 static ctl_table ctl_isa[2] = {{CTL_BUS_ISA, "isa", NULL, 0, 0555, ctl_isa_vars},
  42                                {0}};
  43 static ctl_table ctl_bus[2] = {{CTL_BUS, "bus", NULL, 0, 0555, ctl_isa},
  44                                {0}};
  45
  46 void __init
  47 register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift)
  48 {
  49         isa_membase = membase;
  50         isa_portbase = portbase;
  51         isa_portshift = portshift;
  52         isa_sysctl_header = register_sysctl_table(ctl_bus, 0);
  53 }