isa.c 1.8 KB

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