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/*
* Copyright © 2022 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
#ifndef IGT_DRM_FDINFO_H
#define IGT_DRM_FDINFO_H
#include <sys/types.h>
#include <dirent.h>
#include <stdint.h>
#include <stdbool.h>
#define DRM_CLIENT_FDINFO_MAX_REGIONS 16
#define DRM_CLIENT_FDINFO_MAX_ENGINES 16
struct drm_client_meminfo {
uint64_t total;
uint64_t shared;
uint64_t resident;
uint64_t purgeable;
uint64_t active;
};
enum drm_fdinfo_utilization {
DRM_FDINFO_UTILIZATION_ENGINE_TIME = 1U << 0,
DRM_FDINFO_UTILIZATION_CYCLES = 1U << 1,
DRM_FDINFO_UTILIZATION_TOTAL_CYCLES = 1U << 2,
};
struct drm_client_fdinfo {
char driver[128];
char pdev[128];
unsigned long id;
unsigned int num_engines;
unsigned int last_engine_index;
unsigned int capacity[DRM_CLIENT_FDINFO_MAX_ENGINES];
char names[DRM_CLIENT_FDINFO_MAX_ENGINES][256];
/* mask of enum drm_fdinfo_utilization parsed from fdinfo */
unsigned int utilization_mask;
/* drm-engine-<engine> values */
uint64_t engine_time[DRM_CLIENT_FDINFO_MAX_ENGINES];
/* drm-cycles-<engine> values */
uint64_t cycles[DRM_CLIENT_FDINFO_MAX_ENGINES];
/* drm-total-cycles-<engine> values */
uint64_t total_cycles[DRM_CLIENT_FDINFO_MAX_ENGINES];
unsigned int num_regions;
unsigned int last_region_index;
char region_names[DRM_CLIENT_FDINFO_MAX_REGIONS][256];
struct drm_client_meminfo region_mem[DRM_CLIENT_FDINFO_MAX_REGIONS];
};
/**
* igt_parse_drm_fdinfo: Parse the drm fdinfo file for this process
*
* Parse /proc/self/fdinfo/<drm_fd> collecting all key-values
*
* @drm_fd: DRM file descriptor
* @info: Structure to populate with read data. Must be zeroed.
* @name_map: Optional array of strings representing engine names
* @map_entries: Number of strings in the names array
* @region_map: Optional array of strings representing memory regions
* @region_entries: Number of strings in the region map
*
* Returns the number of valid drm fdinfo keys found or zero if not all
* mandatory keys were present or no engines found.
*/
unsigned int
igt_parse_drm_fdinfo(int drm_fd, struct drm_client_fdinfo *info,
const char **name_map, unsigned int map_entries,
const char **region_map, unsigned int region_entries);
/**
* __igt_parse_drm_fdinfo: Parse the drm fdinfo file for a process
*
* Parse /proc/<pid>/fdinfo/<fd> collecting all key-values.
*
* @dir: File descriptor pointing to /proc/<pid>/fdinfo directory
* @fd: String representation of the file descriptor number (<fd>) to parse.
* @info: Structure to populate with read data. Must be zeroed.
* @name_map: Optional array of strings representing engine names
* @map_entries: Number of strings in the names array
* @region_map: Optional array of strings representing memory regions
* @region_entries: Number of strings in the region map
*
* Returns the number of valid drm fdinfo keys found or zero if not all
* mandatory keys were present or no engines found.
*/
unsigned int
__igt_parse_drm_fdinfo(int dir, const char *fd,
struct drm_client_fdinfo *info,
const char **name_map, unsigned int map_entries,
const char **region_map, unsigned int region_entries);
#endif /* IGT_DRM_FDINFO_H */
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