1 //===--- amdgpu/dynamic_hsa/hsa.cpp ------------------------------- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Implement subset of hsa api by calling into hsa library via dlopen 10 // Does the dlopen/dlsym calls as part of the call to hsa_init 11 // 12 //===----------------------------------------------------------------------===// 13 #include "hsa.h" 14 #include "Debug.h" 15 #include "dlwrap.h" 16 #include "hsa_ext_amd.h" 17 18 #include <dlfcn.h> 19 20 DLWRAP_INTERNAL(hsa_init, 0); 21 22 DLWRAP(hsa_status_string, 2); 23 DLWRAP(hsa_shut_down, 0); 24 DLWRAP(hsa_agent_get_info, 3); 25 DLWRAP(hsa_iterate_agents, 2); 26 DLWRAP(hsa_signal_create, 4); 27 DLWRAP(hsa_signal_destroy, 1); 28 DLWRAP(hsa_signal_store_relaxed, 2); 29 DLWRAP(hsa_signal_store_screlease, 2); 30 DLWRAP(hsa_signal_wait_scacquire, 5); 31 DLWRAP(hsa_queue_create, 8); 32 DLWRAP(hsa_queue_destroy, 1); 33 DLWRAP(hsa_queue_load_read_index_scacquire, 1); 34 DLWRAP(hsa_queue_add_write_index_relaxed, 2); 35 DLWRAP(hsa_memory_copy, 3); 36 DLWRAP(hsa_executable_create, 4); 37 DLWRAP(hsa_executable_destroy, 1); 38 DLWRAP(hsa_executable_freeze, 2); 39 DLWRAP(hsa_executable_symbol_get_info, 3); 40 DLWRAP(hsa_executable_iterate_symbols, 3); 41 DLWRAP(hsa_code_object_deserialize, 4); 42 DLWRAP(hsa_executable_load_code_object, 4); 43 DLWRAP(hsa_amd_agent_memory_pool_get_info, 4); 44 DLWRAP(hsa_amd_agent_iterate_memory_pools, 3); 45 DLWRAP(hsa_amd_memory_pool_allocate, 4); 46 DLWRAP(hsa_amd_memory_pool_free, 1); 47 DLWRAP(hsa_amd_memory_async_copy, 8); 48 DLWRAP(hsa_amd_memory_pool_get_info, 3); 49 DLWRAP(hsa_amd_agents_allow_access, 4); 50 DLWRAP(hsa_amd_memory_fill, 3); 51 DLWRAP(hsa_amd_register_system_event_handler, 2); 52 53 DLWRAP_FINALIZE(); 54 55 #ifndef DYNAMIC_HSA_PATH 56 #define DYNAMIC_HSA_PATH "libhsa-runtime64.so" 57 #endif 58 59 #ifndef TARGET_NAME 60 #error "Missing TARGET_NAME macro" 61 #endif 62 #define DEBUG_PREFIX "Target " GETNAME(TARGET_NAME) " RTL" 63 64 static bool checkForHSA() { 65 // return true if dlopen succeeded and all functions found 66 67 const char *HsaLib = DYNAMIC_HSA_PATH; 68 void *DynlibHandle = dlopen(HsaLib, RTLD_NOW); 69 if (!DynlibHandle) { 70 DP("Unable to load library '%s': %s!\n", HsaLib, dlerror()); 71 return false; 72 } 73 74 for (size_t I = 0; I < dlwrap::size(); I++) { 75 const char *Sym = dlwrap::symbol(I); 76 77 void *P = dlsym(DynlibHandle, Sym); 78 if (P == nullptr) { 79 DP("Unable to find '%s' in '%s'!\n", Sym, HsaLib); 80 return false; 81 } 82 DP("Implementing %s with dlsym(%s) -> %p\n", Sym, Sym, P); 83 84 *dlwrap::pointer(I) = P; 85 } 86 87 return true; 88 } 89 90 hsa_status_t hsa_init() { 91 if (!checkForHSA()) { 92 return HSA_STATUS_ERROR; 93 } 94 return dlwrap_hsa_init(); 95 } 96