LXR linux/arch/powerpc/perf/hv-24x7.h

   1#ifndef LINUX_POWERPC_PERF_HV_24X7_H_
   2#define LINUX_POWERPC_PERF_HV_24X7_H_
   3
   4#include <linux/types.h>
   5
   6enum hv_perf_domains {
   7#define DOMAIN(n, v, x, c) HV_PERF_DOMAIN_##n = v,
   8#include "hv-24x7-domains.h"
   9#undef DOMAIN
  10        HV_PERF_DOMAIN_MAX,
  11};
  12
  13struct hv_24x7_request {
  14        /* PHYSICAL domains require enabling via phyp/hmc. */
  15        __u8 performance_domain;
  16        __u8 reserved[0x1];
  17
  18        /* bytes to read starting at @data_offset. must be a multiple of 8 */
  19        __be16 data_size;
  20
  21        /*
  22         * byte offset within the perf domain to read from. must be 8 byte
  23         * aligned
  24         */
  25        __be32 data_offset;
  26
  27        /*
  28         * only valid for VIRTUAL_PROCESSOR domains, ignored for others.
  29         * -1 means "current partition only"
  30         *  Enabling via phyp/hmc required for non-"-1" values. 0 forbidden
  31         *  unless requestor is 0.
  32         */
  33        __be16 starting_lpar_ix;
  34
  35        /*
  36         * Ignored when @starting_lpar_ix == -1
  37         * Ignored when @performance_domain is not VIRTUAL_PROCESSOR_*
  38         * -1 means "infinite" or all
  39         */
  40        __be16 max_num_lpars;
  41
  42        /* chip, core, or virtual processor based on @performance_domain */
  43        __be16 starting_ix;
  44        __be16 max_ix;
  45} __packed;
  46
  47struct hv_24x7_request_buffer {
  48        /* 0 - ? */
  49        /* 1 - ? */
  50#define HV_24X7_IF_VERSION_CURRENT 0x01
  51        __u8 interface_version;
  52        __u8 num_requests;
  53        __u8 reserved[0xE];
  54        struct hv_24x7_request requests[1];
  55} __packed;
  56
  57struct hv_24x7_result_element {
  58        __be16 lpar_ix;
  59
  60        /*
  61         * represents the core, chip, or virtual processor based on the
  62         * request's @performance_domain
  63         */
  64        __be16 domain_ix;
  65
  66        /* -1 if @performance_domain does not refer to a virtual processor */
  67        __be32 lpar_cfg_instance_id;
  68
  69        /* size = @result_element_data_size of containing result. */
  70        __u64 element_data[1];
  71} __packed;
  72
  73struct hv_24x7_result {
  74        __u8 result_ix;
  75
  76        /*
  77         * 0 = not all result elements fit into the buffer, additional requests
  78         *     required
  79         * 1 = all result elements were returned
  80         */
  81        __u8 results_complete;
  82        __be16 num_elements_returned;
  83
  84        /* This is a copy of @data_size from the corresponding hv_24x7_request */
  85        __be16 result_element_data_size;
  86        __u8 reserved[0x2];
  87
  88        /* WARNING: only valid for first result element due to variable sizes
  89         *          of result elements */
  90        /* struct hv_24x7_result_element[@num_elements_returned] */
  91        struct hv_24x7_result_element elements[1];
  92} __packed;
  93
  94struct hv_24x7_data_result_buffer {
  95        /* See versioning for request buffer */
  96        __u8 interface_version;
  97
  98        __u8 num_results;
  99        __u8 reserved[0x1];
 100        __u8 failing_request_ix;
 101        __be32 detailed_rc;
 102        __be64 cec_cfg_instance_id;
 103        __be64 catalog_version_num;
 104        __u8 reserved2[0x8];
 105        /* WARNING: only valid for the first result due to variable sizes of
 106         *          results */
 107        struct hv_24x7_result results[1]; /* [@num_results] */
 108} __packed;
 109
 110#endif
 111