1#ifndef LINUX_POWERPC_PERF_HV_24X7_H_
  2#define LINUX_POWERPC_PERF_HV_24X7_H_
  3
  4#include <linux/types.h>
  5
  6struct 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
 46struct 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
 56struct 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
 72struct 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
 93struct 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