arch/powerpc/perf/hv-gpci.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef LINUX_POWERPC_PERF_HV_GPCI_H_
   3 #define LINUX_POWERPC_PERF_HV_GPCI_H_
   4
   5 #include <linux/types.h>
   6
   7 /* From the document "H_GetPerformanceCounterInfo Interface" v1.07 */
   8
   9 /* H_GET_PERF_COUNTER_INFO argument */
  10 struct hv_get_perf_counter_info_params {
  11         __be32 counter_request; /* I */
  12         __be32 starting_index;  /* IO */
  13         __be16 secondary_index; /* IO */
  14         __be16 returned_values; /* O */
  15         __be32 detail_rc; /* O, only needed when called via *_norets() */
  16
  17         /*
  18          * O, size each of counter_value element in bytes, only set for version
  19          * >= 0x3
  20          */
  21         __be16 cv_element_size;
  22
  23         /* I, 0 (zero) for versions < 0x3 */
  24         __u8 counter_info_version_in;
  25
  26         /* O, 0 (zero) if version < 0x3. Must be set to 0 when making hcall */
  27         __u8 counter_info_version_out;
  28         __u8 reserved[0xC];
  29         __u8 counter_value[];
  30 } __packed;
  31
  32 /*
  33  * counter info version => fw version/reference (spec version)
  34  *
  35  * 8 => power8 (1.07)
  36  * [7 is skipped by spec 1.07]
  37  * 6 => TLBIE (1.07)
  38  * 5 => v7r7m0.phyp (1.05)
  39  * [4 skipped]
  40  * 3 => v7r6m0.phyp (?)
  41  * [1,2 skipped]
  42  * 0 => v7r{2,3,4}m0.phyp (?)
  43  */
  44 #define COUNTER_INFO_VERSION_CURRENT 0x8
  45
  46 /* capability mask masks. */
  47 enum {
  48         HV_GPCI_CM_GA = (1 << 7),
  49         HV_GPCI_CM_EXPANDED = (1 << 6),
  50         HV_GPCI_CM_LAB = (1 << 5)
  51 };
  52
  53 #define REQUEST_FILE "../hv-gpci-requests.h"
  54 #define NAME_LOWER hv_gpci
  55 #define NAME_UPPER HV_GPCI
  56 #include "req-gen/perf.h"
  57 #undef REQUEST_FILE
  58 #undef NAME_LOWER
  59 #undef NAME_UPPER
  60
  61 #endif