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
   6 struct hv_24x7_request {
   7         /* PHYSICAL domains require enabling via phyp/hmc. */
   8 #define HV_24X7_PERF_DOMAIN_PHYSICAL_CHIP 0x01
   9 #define HV_24X7_PERF_DOMAIN_PHYSICAL_CORE 0x02
  10 #define HV_24X7_PERF_DOMAIN_VIRTUAL_PROCESSOR_HOME_CORE   0x03
  11 #define HV_24X7_PERF_DOMAIN_VIRTUAL_PROCESSOR_HOME_CHIP   0x04
  12 #define HV_24X7_PERF_DOMAIN_VIRTUAL_PROCESSOR_HOME_NODE   0x05
  13 #define HV_24X7_PERF_DOMAIN_VIRTUAL_PROCESSOR_REMOTE_NODE 0x06
  14         __u8 performance_domain;
  15         __u8 reserved[0x1];
  16
  17         /* bytes to read starting at @data_offset. must be a multiple of 8 */
  18         __be16 data_size;
  19
  20         /*
  21          * byte offset within the perf domain to read from. must be 8 byte
  22          * aligned
  23          */
  24         __be32 data_offset;
  25
  26         /*
  27          * only valid for VIRTUAL_PROCESSOR domains, ignored for others.
  28          * -1 means "current partition only"
  29          *  Enabling via phyp/hmc required for non-"-1" values. 0 forbidden
  30          *  unless requestor is 0.
  31          */
  32         __be16 starting_lpar_ix;
  33
  34         /*
  35          * Ignored when @starting_lpar_ix == -1
  36          * Ignored when @performance_domain is not VIRTUAL_PROCESSOR_*
  37          * -1 means "infinite" or all
  38          */
  39         __be16 max_num_lpars;
  40
  41         /* chip, core, or virtual processor based on @performance_domain */
  42         __be16 starting_ix;
  43         __be16 max_ix;
  44 } __packed;
  45
  46 struct hv_24x7_request_buffer {
  47         /* 0 - ? */
  48         /* 1 - ? */
  49 #define HV_24X7_IF_VERSION_CURRENT 0x01
  50         __u8 interface_version;
  51         __u8 num_requests;
  52         __u8 reserved[0xE];
  53         struct hv_24x7_request requests[];
  54 } __packed;
  55
  56 struct hv_24x7_result_element {
  57         __be16 lpar_ix;
  58
  59         /*
  60          * represents the core, chip, or virtual processor based on the
  61          * request's @performance_domain
  62          */
  63         __be16 domain_ix;
  64
  65         /* -1 if @performance_domain does not refer to a virtual processor */
  66         __be32 lpar_cfg_instance_id;
  67
  68         /* size = @result_element_data_size of cointaining result. */
  69         __u8 element_data[];
  70 } __packed;
  71
  72 struct hv_24x7_result {
  73         __u8 result_ix;
  74
  75         /*
  76          * 0 = not all result elements fit into the buffer, additional requests
  77          *     required
  78          * 1 = all result elements were returned
  79          */
  80         __u8 results_complete;
  81         __be16 num_elements_returned;
  82
  83         /* This is a copy of @data_size from the coresponding hv_24x7_request */
  84         __be16 result_element_data_size;
  85         __u8 reserved[0x2];
  86
  87         /* WARNING: only valid for first result element due to variable sizes
  88          *          of result elements */
  89         /* struct hv_24x7_result_element[@num_elements_returned] */
  90         struct hv_24x7_result_element elements[];
  91 } __packed;
  92
  93 struct hv_24x7_data_result_buffer {
  94         /* See versioning for request buffer */
  95         __u8 interface_version;
  96
  97         __u8 num_results;
  98         __u8 reserved[0x1];
  99         __u8 failing_request_ix;
 100         __be32 detailed_rc;
 101         __be64 cec_cfg_instance_id;
 102         __be64 catalog_version_num;
 103         __u8 reserved2[0x8];
 104         /* WARNING: only valid for the first result due to variable sizes of
 105          *          results */
 106         struct hv_24x7_result results[]; /* [@num_results] */
 107 } __packed;
 108
 109 #endif