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- /*
- Copyright (c) 2017-2018, Feral Interactive
- All rights reserved.
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
- * Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
- * Neither the name of Feral Interactive nor the names of its contributors
- may be used to endorse or promote products derived from this software
- without specific prior written permission.
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGE.
- */
- #define _GNU_SOURCE
- #include "gamemode.h"
- #include "helpers.h"
- #include "logging.h"
- #include "daemon_config.h"
- #include "gpu-query.h"
- // TODO
- // Gather GPU type and information automatically
- // Apply Nvidia GPU settings (CoolBits will be needed)
- // Apply AMD GPU settings (Will need user changing pwm1_enable)
- // Intel?
- // Provide documentation on optimisations
- /**
- * Attempts to identify the current in use GPU information
- */
- int game_mode_initialise_gpu(GameModeConfig *config, GameModeGPUInfo **info)
- {
- int status = 0;
- /* Verify input, this is programmer error */
- if (!info || *info)
- FATAL_ERROR("Invalid GameModeGPUInfo passed to %s", __func__);
- /* Early out if we have this feature turned off */
- char apply[CONFIG_VALUE_MAX];
- config_get_apply_gpu_optimisations(config, apply);
- if (strlen(apply) == 0) {
- return 0;
- } else if (strncmp(apply, "accept-responsibility", CONFIG_VALUE_MAX) != 0) {
- LOG_ERROR(
- "apply_gpu_optimisations set to value other than \"accept-responsibility\" (%s), will "
- "not apply GPU optimisations!\n",
- apply);
- return -1;
- }
- /* Create the context */
- GameModeGPUInfo *new_info = malloc(sizeof(GameModeGPUInfo));
- memset(new_info, 0, sizeof(GameModeGPUInfo));
- /* Get the config parameters */
- config_get_gpu_vendor(config, &new_info->vendor);
- config_get_gpu_device(config, &new_info->device);
- /* TODO: Detect the GPU vendor and device automatically when these aren't set */
- /* verify device ID */
- if (new_info->device == -1) {
- LOG_ERROR(
- "ERROR: Invalid gpu_device value set in configuration, will not apply "
- "optimisations!\n");
- free(new_info);
- return -1;
- }
- /* verify GPU vendor */
- if (!(new_info->vendor == Vendor_NVIDIA || new_info->vendor == Vendor_AMD ||
- new_info->vendor == Vendor_Intel)) {
- LOG_ERROR(
- "ERROR: Invalid gpu_vendor value (0x%04x) set in configuration, will not apply "
- "optimisations!\n",
- (unsigned int)new_info->vendor);
- LOG_ERROR("Possible values are: 0x%04x (NVIDIA) 0x%04x (AMD) 0x%04x (Intel)\n",
- Vendor_NVIDIA,
- Vendor_AMD,
- Vendor_Intel);
- free(new_info);
- return -1;
- }
- /* Load the config based on GPU and also verify the values are sane */
- switch (new_info->vendor) {
- case Vendor_NVIDIA:
- config_get_nv_core_clock_mhz_offset(config, &new_info->core);
- config_get_nv_mem_clock_mhz_offset(config, &new_info->mem);
- /* Reject values over some guessed values
- * If a user wants to go into very unsafe levels they can recompile
- */
- const int nv_core_hard_limit = 200;
- const int nv_mem_hard_limit = 2000;
- if (new_info->core > nv_core_hard_limit || new_info->mem > nv_mem_hard_limit) {
- LOG_ERROR(
- "ERROR NVIDIA Overclock value above safety levels of +%d (core) +%d (mem), will "
- "not overclock!\n",
- nv_core_hard_limit,
- nv_mem_hard_limit);
- LOG_ERROR("nv_core_clock_mhz_offset:%ld nv_mem_clock_mhz_offset:%ld\n",
- new_info->core,
- new_info->mem);
- free(new_info);
- return -1;
- }
- break;
- case Vendor_AMD:
- config_get_amd_core_clock_percentage(config, &new_info->core);
- config_get_amd_mem_clock_percentage(config, &new_info->mem);
- /* Reject values over 25%
- * If a user wants to go into very unsafe levels they can recompile
- */
- const int amd_hard_limit = 25;
- if (new_info->core > amd_hard_limit || new_info->mem > amd_hard_limit) {
- LOG_ERROR("ERROR AMD Overclock value above safety level of %d%%, will not overclock!\n",
- amd_hard_limit);
- LOG_ERROR("amd_core_clock_percentage:%ld amd_mem_clock_percentage:%ld\n",
- new_info->core,
- new_info->mem);
- free(new_info);
- return -1;
- }
- break;
- default:
- break;
- }
- /* Give back the new gpu info */
- *info = new_info;
- return status;
- }
- /* Simply used to free the GPU info object */
- void game_mode_free_gpu(GameModeGPUInfo **info)
- {
- /* Simply free the object */
- free(*info);
- *info = NULL;
- }
- //#include <linux/limits.h>
- //#include <stdio.h>
- //#include <sys/wait.h>
- //#include <unistd.h>
- /**
- * Applies GPU optimisations when gamemode is active and removes them after
- */
- int game_mode_apply_gpu(const GameModeGPUInfo *info, bool apply)
- {
- // Null info means don't apply anything
- if (!info)
- return 0;
- /*
- pid_t p;
- int status = 0;
- int ret = 0;
- int r = -1;
- const char *const exec_args[] = {
- "/usr/bin/pkexec", LIBEXECDIR "/gpuclockctl", "set", value, NULL,
- };
- LOG_MSG("Requesting new GPU settings %s\n", value);
- if ((p = fork()) < 0) {
- LOG_ERROR("Failed to fork(): %s\n", strerror(errno));
- return false;
- } else if (p == 0) {
- if ((r = execv(exec_args[0], (char *const *)exec_args)) != 0) {
- LOG_ERROR("Failed to execute cpugovctl helper: %s %s\n", exec_args[1],
- strerror(errno)); exit(EXIT_FAILURE);
- }
- _exit(EXIT_SUCCESS);
- } else {
- if (waitpid(p, &status, 0) < 0) {
- LOG_ERROR("Failed to waitpid(%d): %s\n", (int)p, strerror(errno));
- return false;
- }
- if (!WIFEXITED(status)) {
- LOG_ERROR("Child process '%s' exited abnormally\n", exec_args[0]);
- }
- }
- if ((ret = WEXITSTATUS(status)) != 0) {
- LOG_ERROR("Failed to update cpu governor policy\n");
- */
- return 0;
- }
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