arch/s390/oprofile/hwsampler.h

   1 /*
   2  * CPUMF HW sampler functions and internal structures
   3  *
   4  *    Copyright IBM Corp. 2010
   5  *    Author(s): Heinz Graalfs <graalfs@de.ibm.com>
   6  */
   7
   8 #ifndef HWSAMPLER_H_
   9 #define HWSAMPLER_H_
  10
  11 #include <linux/workqueue.h>
  12
  13 struct hws_qsi_info_block          /* QUERY SAMPLING information block  */
  14 { /* Bit(s) */
  15         unsigned int b0_13:14;      /* 0-13: zeros                       */
  16         unsigned int as:1;          /* 14: sampling authorisation control*/
  17         unsigned int b15_21:7;      /* 15-21: zeros                      */
  18         unsigned int es:1;          /* 22: sampling enable control       */
  19         unsigned int b23_29:7;      /* 23-29: zeros                      */
  20         unsigned int cs:1;          /* 30: sampling activation control   */
  21         unsigned int:1;             /* 31: reserved                      */
  22         unsigned int bsdes:16;      /* 4-5: size of sampling entry       */
  23         unsigned int:16;            /* 6-7: reserved                     */
  24         unsigned long min_sampl_rate; /* 8-15: minimum sampling interval */
  25         unsigned long max_sampl_rate; /* 16-23: maximum sampling interval*/
  26         unsigned long tear;         /* 24-31: TEAR contents              */
  27         unsigned long dear;         /* 32-39: DEAR contents              */
  28         unsigned int rsvrd0;        /* 40-43: reserved                   */
  29         unsigned int cpu_speed;     /* 44-47: CPU speed                  */
  30         unsigned long long rsvrd1;  /* 48-55: reserved                   */
  31         unsigned long long rsvrd2;  /* 56-63: reserved                   */
  32 };
  33
  34 struct hws_ssctl_request_block     /* SET SAMPLING CONTROLS req block   */
  35 { /* bytes 0 - 7  Bit(s) */
  36         unsigned int s:1;           /* 0: maximum buffer indicator       */
  37         unsigned int h:1;           /* 1: part. level reserved for VM use*/
  38         unsigned long b2_53:52;     /* 2-53: zeros                       */
  39         unsigned int es:1;          /* 54: sampling enable control       */
  40         unsigned int b55_61:7;      /* 55-61: - zeros                    */
  41         unsigned int cs:1;          /* 62: sampling activation control   */
  42         unsigned int b63:1;         /* 63: zero                          */
  43         unsigned long interval;     /* 8-15: sampling interval           */
  44         unsigned long tear;         /* 16-23: TEAR contents              */
  45         unsigned long dear;         /* 24-31: DEAR contents              */
  46         /* 32-63:                                                        */
  47         unsigned long rsvrd1;       /* reserved                          */
  48         unsigned long rsvrd2;       /* reserved                          */
  49         unsigned long rsvrd3;       /* reserved                          */
  50         unsigned long rsvrd4;       /* reserved                          */
  51 };
  52
  53 struct hws_cpu_buffer {
  54         unsigned long first_sdbt;       /* @ of 1st SDB-Table for this CP*/
  55         unsigned long worker_entry;
  56         unsigned long sample_overflow;  /* taken from SDB ...            */
  57         struct hws_qsi_info_block qsi;
  58         struct hws_ssctl_request_block ssctl;
  59         struct work_struct worker;
  60         atomic_t ext_params;
  61         unsigned long req_alert;
  62         unsigned long loss_of_sample_data;
  63         unsigned long invalid_entry_address;
  64         unsigned long incorrect_sdbt_entry;
  65         unsigned long sample_auth_change_alert;
  66         unsigned int finish:1;
  67         unsigned int oom:1;
  68         unsigned int stop_mode:1;
  69 };
  70
  71 struct hws_data_entry {
  72         unsigned int def:16;        /* 0-15  Data Entry Format           */
  73         unsigned int R:4;           /* 16-19 reserved                    */
  74         unsigned int U:4;           /* 20-23 Number of unique instruct.  */
  75         unsigned int z:2;           /* zeros                             */
  76         unsigned int T:1;           /* 26 PSW DAT mode                   */
  77         unsigned int W:1;           /* 27 PSW wait state                 */
  78         unsigned int P:1;           /* 28 PSW Problem state              */
  79         unsigned int AS:2;          /* 29-30 PSW address-space control   */
  80         unsigned int I:1;           /* 31 entry valid or invalid         */
  81         unsigned int:16;
  82         unsigned int prim_asn:16;   /* primary ASN                       */
  83         unsigned long long ia;      /* Instruction Address               */
  84         unsigned long long lpp;     /* Logical-Partition Program Param.  */
  85         unsigned long long vpp;     /* Virtual-Machine Program Param.    */
  86 };
  87
  88 struct hws_trailer_entry {
  89         unsigned int f:1;           /* 0 - Block Full Indicator          */
  90         unsigned int a:1;           /* 1 - Alert request control         */
  91         unsigned long:62;           /* 2 - 63: Reserved                  */
  92         unsigned long overflow;     /* 64 - sample Overflow count        */
  93         unsigned long timestamp;    /* 16 - time-stamp                   */
  94         unsigned long timestamp1;   /*                                   */
  95         unsigned long reserved1;    /* 32 -Reserved                      */
  96         unsigned long reserved2;    /*                                   */
  97         unsigned long progusage1;   /* 48 - reserved for programming use */
  98         unsigned long progusage2;   /*                                   */
  99 };
 100
 101 int hwsampler_setup(void);
 102 int hwsampler_shutdown(void);
 103 int hwsampler_allocate(unsigned long sdbt, unsigned long sdb);
 104 int hwsampler_deallocate(void);
 105 unsigned long hwsampler_query_min_interval(void);
 106 unsigned long hwsampler_query_max_interval(void);
 107 int hwsampler_start_all(unsigned long interval);
 108 int hwsampler_stop_all(void);
 109 int hwsampler_deactivate(unsigned int cpu);
 110 int hwsampler_activate(unsigned int cpu);
 111 unsigned long hwsampler_get_sample_overflow_count(unsigned int cpu);
 112
 113 #endif /*HWSAMPLER_H_*/