sys-manager-core.c 2.0 KB

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  1. /*
  2. * PS3 System Manager core.
  3. *
  4. * Copyright (C) 2007 Sony Computer Entertainment Inc.
  5. * Copyright 2007 Sony Corp.
  6. *
  7. * This program is free software; you can redistribute it and/or modify
  8. * it under the terms of the GNU General Public License as published by
  9. * the Free Software Foundation; version 2 of the License.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with this program; if not, write to the Free Software
  18. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19. */
  20. #include <linux/kernel.h>
  21. #include <linux/export.h>
  22. #include <asm/lv1call.h>
  23. #include <asm/ps3.h>
  24. /**
  25. * Staticly linked routines that allow late binding of a loaded sys-manager
  26. * module.
  27. */
  28. static struct ps3_sys_manager_ops ps3_sys_manager_ops;
  29. /**
  30. * ps3_register_sys_manager_ops - Bind ps3_sys_manager_ops to a module.
  31. * @ops: struct ps3_sys_manager_ops.
  32. *
  33. * To be called from ps3_sys_manager_probe() and ps3_sys_manager_remove() to
  34. * register call back ops for power control. Copies data to the static
  35. * variable ps3_sys_manager_ops.
  36. */
  37. void ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops *ops)
  38. {
  39. BUG_ON(!ops);
  40. BUG_ON(!ops->dev);
  41. ps3_sys_manager_ops = ops ? *ops : ps3_sys_manager_ops;
  42. }
  43. EXPORT_SYMBOL_GPL(ps3_sys_manager_register_ops);
  44. void __noreturn ps3_sys_manager_power_off(void)
  45. {
  46. if (ps3_sys_manager_ops.power_off)
  47. ps3_sys_manager_ops.power_off(ps3_sys_manager_ops.dev);
  48. ps3_sys_manager_halt();
  49. }
  50. void __noreturn ps3_sys_manager_restart(void)
  51. {
  52. if (ps3_sys_manager_ops.restart)
  53. ps3_sys_manager_ops.restart(ps3_sys_manager_ops.dev);
  54. ps3_sys_manager_halt();
  55. }
  56. void __noreturn ps3_sys_manager_halt(void)
  57. {
  58. pr_emerg("System Halted, OK to turn off power\n");
  59. local_irq_disable();
  60. while (1)
  61. lv1_pause(1);
  62. }