161 lines
3.8 KiB
C
161 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef LINUX_POWERPC_PERF_HV_24X7_H_
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#define LINUX_POWERPC_PERF_HV_24X7_H_
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#include <linux/types.h>
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enum hv_perf_domains {
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#define DOMAIN(n, v, x, c) HV_PERF_DOMAIN_##n = v,
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#include "hv-24x7-domains.h"
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#undef DOMAIN
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HV_PERF_DOMAIN_MAX,
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};
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#define H24x7_REQUEST_SIZE(iface_version) (iface_version == 1 ? 16 : 32)
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struct hv_24x7_request {
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/* PHYSICAL domains require enabling via phyp/hmc. */
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__u8 performance_domain;
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__u8 reserved[0x1];
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/* bytes to read starting at @data_offset. must be a multiple of 8 */
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__be16 data_size;
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/*
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* byte offset within the perf domain to read from. must be 8 byte
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* aligned
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*/
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__be32 data_offset;
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/*
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* only valid for VIRTUAL_PROCESSOR domains, ignored for others.
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* -1 means "current partition only"
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* Enabling via phyp/hmc required for non-"-1" values. 0 forbidden
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* unless requestor is 0.
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*/
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__be16 starting_lpar_ix;
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/*
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* Ignored when @starting_lpar_ix == -1
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* Ignored when @performance_domain is not VIRTUAL_PROCESSOR_*
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* -1 means "infinite" or all
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*/
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__be16 max_num_lpars;
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/* chip, core, or virtual processor based on @performance_domain */
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__be16 starting_ix;
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__be16 max_ix;
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/* The following fields were added in v2 of the 24x7 interface. */
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__u8 starting_thread_group_ix;
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/* -1 means all thread groups starting at @starting_thread_group_ix */
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__u8 max_num_thread_groups;
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__u8 reserved2[0xE];
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} __packed;
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struct hv_24x7_request_buffer {
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/* 0 - ? */
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/* 1 - ? */
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__u8 interface_version;
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__u8 num_requests;
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__u8 reserved[0xE];
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struct hv_24x7_request requests[];
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} __packed;
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struct hv_24x7_result_element_v1 {
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__be16 lpar_ix;
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/*
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* represents the core, chip, or virtual processor based on the
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* request's @performance_domain
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*/
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__be16 domain_ix;
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/* -1 if @performance_domain does not refer to a virtual processor */
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__be32 lpar_cfg_instance_id;
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/* size = @result_element_data_size of containing result. */
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__u64 element_data[];
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} __packed;
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/*
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* We need a separate struct for v2 because the offset of @element_data changed
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* between versions.
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*/
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struct hv_24x7_result_element_v2 {
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__be16 lpar_ix;
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/*
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* represents the core, chip, or virtual processor based on the
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* request's @performance_domain
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*/
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__be16 domain_ix;
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/* -1 if @performance_domain does not refer to a virtual processor */
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__be32 lpar_cfg_instance_id;
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__u8 thread_group_ix;
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__u8 reserved[7];
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/* size = @result_element_data_size of containing result. */
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__u64 element_data[];
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} __packed;
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struct hv_24x7_result {
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/*
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* The index of the 24x7 Request Structure in the 24x7 Request Buffer
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* used to request this result.
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*/
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__u8 result_ix;
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/*
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* 0 = not all result elements fit into the buffer, additional requests
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* required
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* 1 = all result elements were returned
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*/
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__u8 results_complete;
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__be16 num_elements_returned;
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/*
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* This is a copy of @data_size from the corresponding hv_24x7_request
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*
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* Warning: to obtain the size of each element in @elements you have
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* to add the size of the other members of the result_element struct.
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*/
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__be16 result_element_data_size;
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__u8 reserved[0x2];
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/*
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* Either
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* struct hv_24x7_result_element_v1[@num_elements_returned]
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* or
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* struct hv_24x7_result_element_v2[@num_elements_returned]
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*
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* depending on the interface_version field of the
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* struct hv_24x7_data_result_buffer containing this result.
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*/
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char elements[];
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} __packed;
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struct hv_24x7_data_result_buffer {
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/* See versioning for request buffer */
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__u8 interface_version;
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__u8 num_results;
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__u8 reserved[0x1];
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__u8 failing_request_ix;
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__be32 detailed_rc;
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__be64 cec_cfg_instance_id;
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__be64 catalog_version_num;
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__u8 reserved2[0x8];
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/* WARNING: only valid for the first result due to variable sizes of
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* results */
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struct hv_24x7_result results[]; /* [@num_results] */
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} __packed;
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#endif
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