acpi.h 2.5 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576
  1. /******************************************************************************
  2. * acpi.h
  3. * acpi file for domain 0 kernel
  4. *
  5. * Copyright (c) 2011 Konrad Rzeszutek Wilk <[email protected]>
  6. * Copyright (c) 2011 Yu Ke <[email protected]>
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License version 2
  10. * as published by the Free Software Foundation; or, when distributed
  11. * separately from the Linux kernel or incorporated into other
  12. * software packages, subject to the following license:
  13. *
  14. * Permission is hereby granted, free of charge, to any person obtaining a copy
  15. * of this source file (the "Software"), to deal in the Software without
  16. * restriction, including without limitation the rights to use, copy, modify,
  17. * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  18. * and to permit persons to whom the Software is furnished to do so, subject to
  19. * the following conditions:
  20. *
  21. * The above copyright notice and this permission notice shall be included in
  22. * all copies or substantial portions of the Software.
  23. *
  24. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  25. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  26. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  27. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  28. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  29. * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  30. * IN THE SOFTWARE.
  31. */
  32. #ifndef _XEN_ACPI_H
  33. #define _XEN_ACPI_H
  34. #include <linux/types.h>
  35. #ifdef CONFIG_XEN_DOM0
  36. #include <asm/xen/hypervisor.h>
  37. #include <xen/xen.h>
  38. #include <linux/acpi.h>
  39. int xen_acpi_notify_hypervisor_sleep(u8 sleep_state,
  40. u32 pm1a_cnt, u32 pm1b_cnd);
  41. int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state,
  42. u32 val_a, u32 val_b);
  43. static inline int xen_acpi_suspend_lowlevel(void)
  44. {
  45. /*
  46. * Xen will save and restore CPU context, so
  47. * we can skip that and just go straight to
  48. * the suspend.
  49. */
  50. acpi_enter_sleep_state(ACPI_STATE_S3);
  51. return 0;
  52. }
  53. static inline void xen_acpi_sleep_register(void)
  54. {
  55. if (xen_initial_domain()) {
  56. acpi_os_set_prepare_sleep(
  57. &xen_acpi_notify_hypervisor_sleep);
  58. acpi_os_set_prepare_extended_sleep(
  59. &xen_acpi_notify_hypervisor_extended_sleep);
  60. acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel;
  61. }
  62. }
  63. #else
  64. static inline void xen_acpi_sleep_register(void)
  65. {
  66. }
  67. #endif
  68. #endif /* _XEN_ACPI_H */