/arch/powerpc/include/asm/pmi.h

http://github.com/mirrors/linux · C Header · 53 lines · 31 code · 10 blank · 12 comment · 0 complexity · 273868b35738914852da4205f68affe3 MD5 · raw file 

    

  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
    2. 

  2. #ifndef _POWERPC_PMI_H
    3. 

  3. #define _POWERPC_PMI_H
    4. 

  4. 

  5. /*
    6. 

  6.  * Definitions for talking with PMI device on PowerPC
    7. 

  7.  *
    8. 

  8.  * PMI (Platform Management Interrupt) is a way to communicate
    9. 

  9.  * with the BMC (Baseboard Management Controller) via interrupts.
    10. 

  10.  * Unlike IPMI it is bidirectional and has a low latency.
    11. 

  11.  *
    12. 

  12.  * (C) Copyright IBM Deutschland Entwicklung GmbH 2005
    13. 

  13.  *
    14. 

  14.  * Author: Christian Krafft <krafft@de.ibm.com>
    15. 

  15.  */
    16. 

  16. 

  17. #ifdef __KERNEL__
    18. 

  18. 

  19. #define PMI_TYPE_FREQ_CHANGE	0x01
    20. 

  20. #define PMI_TYPE_POWER_BUTTON	0x02
    21. 

  21. #define PMI_READ_TYPE		0
    22. 

  22. #define PMI_READ_DATA0		1
    23. 

  23. #define PMI_READ_DATA1		2
    24. 

  24. #define PMI_READ_DATA2		3
    25. 

  25. #define PMI_WRITE_TYPE		4
    26. 

  26. #define PMI_WRITE_DATA0		5
    27. 

  27. #define PMI_WRITE_DATA1		6
    28. 

  28. #define PMI_WRITE_DATA2		7
    29. 

  29. 

  30. #define PMI_ACK			0x80
    31. 

  31. 

  32. #define PMI_TIMEOUT		100
    33. 

  33. 

  34. typedef struct {
    35. 

  35. 	u8	type;
    36. 

  36. 	u8	data0;
    37. 

  37. 	u8	data1;
    38. 

  38. 	u8	data2;
    39. 

  39. } pmi_message_t;
    40. 

  40. 

  41. struct pmi_handler {
    42. 

  42. 	struct list_head node;
    43. 

  43. 	u8 type;
    44. 

  44. 	void (*handle_pmi_message) (pmi_message_t);
    45. 

  45. };
    46. 

  46. 

  47. int pmi_register_handler(struct pmi_handler *);
    48. 

  48. void pmi_unregister_handler(struct pmi_handler *);
    49. 

  49. 

  50. int pmi_send_message(pmi_message_t);
    51. 

  51. 

  52. #endif /* __KERNEL__ */
    53. 

  53. #endif /* _POWERPC_PMI_H */
    54.