arch/powerpc/perf/hv-gpci.h

   1 #ifndef LINUX_POWERPC_PERF_HV_GPCI_H_
   2 #define LINUX_POWERPC_PERF_HV_GPCI_H_
   3
   4 #include <linux/types.h>
   5
   6 /* From the document "H_GetPerformanceCounterInfo Interface" v1.07 */
   7
   8 /* H_GET_PERF_COUNTER_INFO argument */
   9 struct hv_get_perf_counter_info_params {
  10         __be32 counter_request; /* I */
  11         __be32 starting_index;  /* IO */
  12         __be16 secondary_index; /* IO */
  13         __be16 returned_values; /* O */
  14         __be32 detail_rc; /* O, only needed when called via *_norets() */
  15
  16         /*
  17          * O, size each of counter_value element in bytes, only set for version
  18          * >= 0x3
  19          */
  20         __be16 cv_element_size;
  21
  22         /* I, 0 (zero) for versions < 0x3 */
  23         __u8 counter_info_version_in;
  24
  25         /* O, 0 (zero) if version < 0x3. Must be set to 0 when making hcall */
  26         __u8 counter_info_version_out;
  27         __u8 reserved[0xC];
  28         __u8 counter_value[];
  29 } __packed;
  30
  31 /*
  32  * counter info version => fw version/reference (spec version)
  33  *
  34  * 8 => power8 (1.07)
  35  * [7 is skipped by spec 1.07]
  36  * 6 => TLBIE (1.07)
  37  * 5 => v7r7m0.phyp (1.05)
  38  * [4 skipped]
  39  * 3 => v7r6m0.phyp (?)
  40  * [1,2 skipped]
  41  * 0 => v7r{2,3,4}m0.phyp (?)
  42  */
  43 #define COUNTER_INFO_VERSION_CURRENT 0x8
  44
  45 /*
  46  * These determine the counter_value[] layout and the meaning of starting_index
  47  * and secondary_index.
  48  *
  49  * Unless otherwise noted, @secondary_index is unused and ignored.
  50  */
  51 enum counter_info_requests {
  52
  53         /* GENERAL */
  54
  55         /* @starting_index: must be -1 (to refer to the current partition)
  56          */
  57         CIR_SYSTEM_PERFORMANCE_CAPABILITIES = 0X40,
  58 };
  59
  60 struct cv_system_performance_capabilities {
  61         /* If != 0, allowed to collect data from other partitions */
  62         __u8 perf_collect_privileged;
  63
  64         /* These following are only valid if counter_info_version >= 0x3 */
  65 #define CV_CM_GA       (1 << 7)
  66 #define CV_CM_EXPANDED (1 << 6)
  67 #define CV_CM_LAB      (1 << 5)
  68         /* remaining bits are reserved */
  69         __u8 capability_mask;
  70         __u8 reserved[0xE];
  71 } __packed;
  72
  73 #endif