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fix: Correct Xe sysfs paths for ccs mode setting

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Fix the sysfs paths for Xe KMD

Related-To: NEO-10378

Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@intel.com>
This commit is contained in:
Aravind Gopalakrishnan
2025-04-08 22:05:33 +00:00
committed by Compute-Runtime-Automation
parent 4b75d9b218
commit c7fe7dde90
13 changed files with 1146 additions and 124 deletions
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47
shared/source/execution_environment/execution_environment_drm.cpp
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@@ -9,7 +9,10 @@
#include "shared/source/execution_environment/execution_environment.h"
#include "shared/source/execution_environment/root_device_environment.h"
#include "shared/source/os_interface/linux/drm_memory_operations_handler.h"
#include "shared/source/os_interface/linux/drm_neo.h"
#include "shared/source/os_interface/linux/file_descriptor.h"
#include "shared/source/os_interface/linux/ioctl_helper.h"
#include "shared/source/os_interface/os_interface.h"
#include "shared/source/utilities/directory.h"
#include <fcntl.h>
@@ -40,45 +43,11 @@ void ExecutionEnvironment::configureCcsMode() {
const std::string drmPath = "/sys/class/drm";
const std::string expectedFilePrefix = drmPath + "/card";
auto files = Directory::getFiles(drmPath.c_str());
for (const auto &file : files) {
if (file.find(expectedFilePrefix.c_str()) == std::string::npos) {
continue;
}
std::string gtPath = file + "/gt";
auto gtFiles = Directory::getFiles(gtPath.c_str());
auto expectedGtFilePrefix = gtPath + "/gt";
for (const auto &gtFile : gtFiles) {
if (gtFile.find(expectedGtFilePrefix.c_str()) == std::string::npos) {
continue;
}
std::string ccsFile = gtFile + "/ccs_mode";
auto fd = FileDescriptor(ccsFile.c_str(), O_RDWR);
if (fd < 0) {
if ((errno == -EACCES) || (errno == -EPERM)) {
fprintf(stderr, "No read and write permissions for %s, System administrator needs to grant permissions to allow modification of this file from user space\n", ccsFile.c_str());
fprintf(stdout, "No read and write permissions for %s, System administrator needs to grant permissions to allow modification of this file from user space\n", ccsFile.c_str());
}
continue;
}
uint32_t ccsValue = 0;
ssize_t ret = SysCalls::read(fd, &ccsValue, sizeof(uint32_t));
PRINT_DEBUG_STRING(debugManager.flags.PrintDebugMessages.get() && (ret < 0), stderr, "read() on %s failed errno = %d | ret = %d \n",
ccsFile.c_str(), errno, ret);
if ((ret < 0) || (ccsValue == ccsMode)) {
continue;
}
do {
ret = SysCalls::write(fd, &ccsMode, sizeof(uint32_t));
} while (ret == -1 && errno == -EBUSY);
if (ret > 0) {
deviceCcsModeVec.emplace_back(ccsFile, ccsValue);
}
}
for (auto rootDeviceIndex = 0u; rootDeviceIndex < rootDeviceEnvironments.size(); rootDeviceIndex++) {
auto drm = rootDeviceEnvironments[rootDeviceIndex]->osInterface->getDriverModel()->as<NEO::Drm>();
auto ioctlHelper = drm->getIoctlHelper();
auto files = Directory::getFiles(drmPath.c_str());
ioctlHelper->configureCcsMode(files, expectedFilePrefix, ccsMode, deviceCcsModeVec);
}
}