SWDEV-469750: Load libpciaccess-dev functions with dlopen. Removed libsystemd-dev from CMakeLists.txt

Change-Id: I314c188fabc2dd4de3b633d722599bc11a046622

src/utils/libpci_helper.cpp

@@ -0,0 +1,134 @@
+/* Copyright (c) 2022 Advanced Micro Devices, Inc.
+
+ 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 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. */
+
+#include "libpci_helper.h"
+
+#include <cstdio>
+#include <dlfcn.h>
+#include "exception.h"
+
+
+namespace rocprofiler {
+PcieAccessApi* api;
+void* libpciaccess_handle;
+
+// A function just to load all the symbols you need
+PcieAccessApi* LoadPcieAccessLibAPI() {
+  char* libpciaccess_tool = getenv("LIBPCI_TOOL_LIB");
+  if (libpciaccess_tool == nullptr) {
+    libpciaccess_tool = "libpciaccess.so";
+  }
+  libpciaccess_handle = dlopen(libpciaccess_tool, RTLD_NOW);
+  if (libpciaccess_handle == nullptr) {
+    fprintf(stderr, "ROCProfiler: can't load libpciaccess library \"%s\"\n", libpciaccess_tool);
+    fprintf(stderr, "%s\n", dlerror());
+    abort();
+  }
+  dlerror(); /* Clear any existing error */
+
+  api = new PcieAccessApi();
+  api->pci_device_find_by_slot =
+      reinterpret_cast<pci_device_find_by_slot_handler_t>(dlsym(
+          libpciaccess_handle, "pci_device_find_by_slot"));
+  if (api->pci_device_find_by_slot == nullptr) {
+    fprintf(stderr,
+        "ROCProfiler: libpciaccess library corrupted, pci_device_find_by_slot() method is "
+        "expected\n");
+    fprintf(stderr, "%s\n", dlerror());
+    abort();
+  }
+  api->pci_device_probe =
+      reinterpret_cast<pci_device_probe_handler_t>(dlsym(
+          libpciaccess_handle, "pci_device_probe"));
+  if (api->pci_device_probe == nullptr) {
+    fprintf(stderr,
+        "ROCProfiler: libpciaccess library corrupted, pci_device_probe() method is "
+        "expected\n");
+    fprintf(stderr, "%s\n", dlerror());
+    abort();
+  }
+  api->pci_device_map_range =
+      reinterpret_cast<pci_device_map_range_handler_t>(dlsym(
+          libpciaccess_handle, "pci_device_map_range"));
+  if (api->pci_device_map_range == nullptr) {
+    fprintf(stderr,
+        "ROCProfiler: libpciaccess library corrupted, pci_device_map_range() method is "
+        "expected\n");
+    fprintf(stderr, "%s\n", dlerror());
+    abort();
+  }
+  api->pci_device_unmap_range =
+      reinterpret_cast<pci_device_unmap_range_handler_t>(dlsym(
+          libpciaccess_handle, "pci_device_unmap_range"));
+
+  if (api->pci_device_unmap_range == nullptr) {
+    fprintf(stderr,
+        "ROCProfiler: libpciaccess library corrupted, pci_device_unmap_range() method is "
+        "expected\n");
+    fprintf(stderr, "%s\n", dlerror());
+    abort();
+  }
+  api->pci_system_init =
+      reinterpret_cast<pci_system_init_handler_t>(dlsym(
+          libpciaccess_handle, "pci_system_init"));
+  if (api->pci_system_init == nullptr) {
+    fprintf(stderr,
+        "ROCProfiler: libpciaccess library corrupted, pci_system_init() method is "
+        "expected\n");
+    fprintf(stderr, "%s\n", dlerror());
+    abort();
+  }
+  api->pci_system_cleanup =
+      reinterpret_cast<pci_system_cleanup_handler_t>(dlsym(
+          libpciaccess_handle, "pci_system_cleanup"));
+  if (api->pci_system_cleanup == nullptr) {
+    fprintf(stderr,
+        "ROCProfiler: libpciaccess library corrupted, pci_system_cleanup() method is "
+        "expected\n");
+    fprintf(stderr, "%s\n", dlerror());
+    abort();
+  }
+  return api;
+}
+
+const PcieAccessApi* GetPciAccessLibApi() {
+  if (api == nullptr) {
+    api = LoadPcieAccessLibAPI();
+  }
+  return api;
+}
+
+void UnLoadPcieAccessLibAPI() {
+  if (api == nullptr) {
+    return;
+  }
+  api->pci_device_find_by_slot = nullptr;
+  api->pci_device_probe = nullptr;
+  api->pci_device_map_range = nullptr;
+  api->pci_device_unmap_range = nullptr;
+  api->pci_system_init = nullptr;
+  api->pci_system_cleanup = nullptr;
+  delete api;
+  api = nullptr;
+  if (dlclose(libpciaccess_handle) != 0) {
+    warning("Warning: Failed to close libpciaccess handle: %s\n", dlerror());
+  }
+}
+}  // namespace rocprofiler

src/utils/libpci_helper.h

@@ -0,0 +1,51 @@
+/* Copyright (c) 2022 Advanced Micro Devices, Inc.
+
+ 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 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. */
+#pragma once
+
+#include <pciaccess.h>
+
+namespace rocprofiler {
+    typedef struct pci_device * (*pci_device_find_by_slot_handler_t)(uint32_t, 
+        uint32_t, uint32_t, uint32_t);
+    typedef int (*pci_device_probe_handler_t)(struct pci_device *);
+    typedef int (*pci_device_map_range_handler_t)(struct pci_device *, pciaddr_t,
+        pciaddr_t, unsigned, void **);
+    typedef int (*pci_device_unmap_range_handler_t) (struct pci_device *, void *,
+        pciaddr_t);
+    typedef int (*pci_system_init_handler_t)();
+    typedef void (*pci_system_cleanup_handler_t)();
+
+    struct PcieAccessApi{
+        pci_device_find_by_slot_handler_t pci_device_find_by_slot;
+        pci_device_probe_handler_t pci_device_probe;
+        pci_device_map_range_handler_t pci_device_map_range;
+        pci_device_unmap_range_handler_t pci_device_unmap_range;
+        pci_system_init_handler_t pci_system_init;
+        pci_system_cleanup_handler_t pci_system_cleanup;
+    };
+
+    
+    // A function just to load all the libpciaccess symbols
+    PcieAccessApi* LoadPcieAccessLibAPI();
+    // A simple getter function for easy access to the API table
+    const PcieAccessApi* GetPciAccessLibApi();
+    // Sets all API table functions to null and calls dlclose
+    void UnLoadPcieAccessLibAPI();
+}  // namespace rocprofiler