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chp.h

chp.h 1.8 KB
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  1. /*
    2. 

  2.  *    Copyright IBM Corp. 2007, 2010
    3. 

  3.  *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
    4. 

  4.  */
    5. 

  5. 

  6. #ifndef S390_CHP_H
    7. 

  7. #define S390_CHP_H S390_CHP_H
    8. 

  8. 

  9. #include <linux/types.h>
    10. 

  10. #include <linux/device.h>
    11. 

  11. #include <linux/mutex.h>
    12. 

  12. #include <asm/chpid.h>
    13. 

  13. #include "chsc.h"
    14. 

  14. #include "css.h"
    15. 

  15. 

  16. #define CHP_STATUS_STANDBY		0
    17. 

  17. #define CHP_STATUS_CONFIGURED		1
    18. 

  18. #define CHP_STATUS_RESERVED		2
    19. 

  19. #define CHP_STATUS_NOT_RECOGNIZED	3
    20. 

  20. 

  21. #define CHP_ONLINE 0
    22. 

  22. #define CHP_OFFLINE 1
    23. 

  23. #define CHP_VARY_ON 2
    24. 

  24. #define CHP_VARY_OFF 3
    25. 

  25. 

  26. struct chp_link {
    27. 

  27. 	struct chp_id chpid;
    28. 

  28. 	u32 fla_mask;
    29. 

  29. 	u16 fla;
    30. 

  30. };
    31. 

  31. 

  32. static inline int chp_test_bit(u8 *bitmap, int num)
    33. 

  33. {
    34. 

  34. 	int byte = num >> 3;
    35. 

  35. 	int mask = 128 >> (num & 7);
    36. 

  36. 

  37. 	return (bitmap[byte] & mask) ? 1 : 0;
    38. 

  38. }
    39. 

  39. 

  40. 

  41. struct channel_path {
    42. 

  42. 	struct device dev;
    43. 

  43. 	struct chp_id chpid;
    44. 

  44. 	struct mutex lock; /* Serialize access to below members. */
    45. 

  45. 	int state;
    46. 

  46. 	struct channel_path_desc desc;
    47. 

  47. 	struct channel_path_desc_fmt1 desc_fmt1;
    48. 

  48. 	/* Channel-measurement related stuff: */
    49. 

  49. 	int cmg;
    50. 

  50. 	int shared;
    51. 

  51. 	struct cmg_chars cmg_chars;
    52. 

  52. };
    53. 

  53. 

  54. /* Return channel_path struct for given chpid. */
    55. 

  55. static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
    56. 

  56. {
    57. 

  57. 	return channel_subsystems[chpid.cssid]->chps[chpid.id];
    58. 

  58. }
    59. 

  59. 

  60. int chp_get_status(struct chp_id chpid);
    61. 

  61. u8 chp_get_sch_opm(struct subchannel *sch);
    62. 

  62. int chp_is_registered(struct chp_id chpid);
    63. 

  63. struct channel_path_desc *chp_get_chp_desc(struct chp_id chpid);
    64. 

  64. void chp_remove_cmg_attr(struct channel_path *chp);
    65. 

  65. int chp_add_cmg_attr(struct channel_path *chp);
    66. 

  66. int chp_update_desc(struct channel_path *chp);
    67. 

  67. int chp_new(struct chp_id chpid);
    68. 

  68. void chp_cfg_schedule(struct chp_id chpid, int configure);
    69. 

  69. void chp_cfg_cancel_deconfigure(struct chp_id chpid);
    70. 

  70. int chp_info_get_status(struct chp_id chpid);
    71. 

  71. int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
    72. 

  72. #endif /* S390_CHP_H */
    73.