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include
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asm-x86_64
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hpet.h

hpet.h 2.0 KB
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  1. #ifndef _ASM_X8664_HPET_H
    2. 

  2. #define _ASM_X8664_HPET_H 1
    3. 

  3. 

  4. /*
    5. 

  5.  * Documentation on HPET can be found at:
    6. 

  6.  *      http://www.intel.com/ial/home/sp/pcmmspec.htm
    7. 

  7.  *      ftp://download.intel.com/ial/home/sp/mmts098.pdf
    8. 

  8.  */
    9. 

  9. 

  10. #define HPET_MMAP_SIZE	1024
    11. 

  11. 

  12. #define HPET_ID		0x000
    13. 

  13. #define HPET_PERIOD	0x004
    14. 

  14. #define HPET_CFG	0x010
    15. 

  15. #define HPET_STATUS	0x020
    16. 

  16. #define HPET_COUNTER	0x0f0
    17. 

  17. #define HPET_Tn_OFFSET	0x20
    18. 

  18. #define HPET_Tn_CFG(n)	 (0x100 + (n) * HPET_Tn_OFFSET)
    19. 

  19. #define HPET_Tn_ROUTE(n) (0x104 + (n) * HPET_Tn_OFFSET)
    20. 

  20. #define HPET_Tn_CMP(n)	 (0x108 + (n) * HPET_Tn_OFFSET)
    21. 

  21. #define HPET_T0_CFG	HPET_Tn_CFG(0)
    22. 

  22. #define HPET_T0_CMP	HPET_Tn_CMP(0)
    23. 

  23. #define HPET_T1_CFG	HPET_Tn_CFG(1)
    24. 

  24. #define HPET_T1_CMP	HPET_Tn_CMP(1)
    25. 

  25. 

  26. #define HPET_ID_VENDOR	0xffff0000
    27. 

  27. #define HPET_ID_LEGSUP	0x00008000
    28. 

  28. #define HPET_ID_64BIT	0x00002000
    29. 

  29. #define HPET_ID_NUMBER	0x00001f00
    30. 

  30. #define HPET_ID_REV	0x000000ff
    31. 

  31. #define	HPET_ID_NUMBER_SHIFT	8
    32. 

  32. 

  33. #define HPET_ID_VENDOR_SHIFT	16
    34. 

  34. #define HPET_ID_VENDOR_8086	0x8086
    35. 

  35. 

  36. #define HPET_CFG_ENABLE	0x001
    37. 

  37. #define HPET_CFG_LEGACY	0x002
    38. 

  38. #define	HPET_LEGACY_8254	2
    39. 

  39. #define	HPET_LEGACY_RTC		8
    40. 

  40. 

  41. #define HPET_TN_LEVEL		0x0002
    42. 

  42. #define HPET_TN_ENABLE		0x0004
    43. 

  43. #define HPET_TN_PERIODIC	0x0008
    44. 

  44. #define HPET_TN_PERIODIC_CAP	0x0010
    45. 

  45. #define HPET_TN_64BIT_CAP	0x0020
    46. 

  46. #define HPET_TN_SETVAL		0x0040
    47. 

  47. #define HPET_TN_32BIT		0x0100
    48. 

  48. #define HPET_TN_ROUTE		0x3e00
    49. 

  49. #define HPET_TN_FSB		0x4000
    50. 

  50. #define HPET_TN_FSB_CAP		0x8000
    51. 

  51. 

  52. #define HPET_TN_ROUTE_SHIFT	9
    53. 

  53. 

  54. #define HPET_TICK_RATE (HZ * 100000UL)
    55. 

  55. 

  56. extern int is_hpet_enabled(void);
    57. 

  57. extern int hpet_rtc_timer_init(void);
    58. 

  58. extern int apic_is_clustered_box(void);
    59. 

  59. 

  60. extern int hpet_use_timer;
    61. 

  61. 

  62. #ifdef CONFIG_HPET_EMULATE_RTC
    63. 

  63. extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask);
    64. 

  64. extern int hpet_set_rtc_irq_bit(unsigned long bit_mask);
    65. 

  65. extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec);
    66. 

  66. extern int hpet_set_periodic_freq(unsigned long freq);
    67. 

  67. extern int hpet_rtc_dropped_irq(void);
    68. 

  68. extern int hpet_rtc_timer_init(void);
    69. 

  69. #endif /* CONFIG_HPET_EMULATE_RTC */
    70. 

  70. 

  71. #endif
    72.