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_INITIALIZE(); 21 22 DLWRAP_INTERNAL(hsa_init, 0); 23 24 DLWRAP(hsa_status_string, 2); 25 DLWRAP(hsa_shut_down, 0); 26 DLWRAP(hsa_agent_get_info, 3); 27 DLWRAP(hsa_iterate_agents, 2); 28 DLWRAP(hsa_signal_create, 4); 29 DLWRAP(hsa_signal_destroy, 1); 30 DLWRAP(hsa_signal_store_relaxed, 2); 31 DLWRAP(hsa_signal_store_screlease, 2); 32 DLWRAP(hsa_signal_wait_scacquire, 5); 33 DLWRAP(hsa_queue_create, 8); 34 DLWRAP(hsa_queue_destroy, 1); 35 DLWRAP(hsa_queue_load_read_index_scacquire, 1); 36 DLWRAP(hsa_queue_add_write_index_relaxed, 2); 37 DLWRAP(hsa_memory_copy, 3); 38 DLWRAP(hsa_executable_create, 4); 39 DLWRAP(hsa_executable_destroy, 1); 40 DLWRAP(hsa_executable_freeze, 2); 41 DLWRAP(hsa_executable_symbol_get_info, 3); 42 DLWRAP(hsa_executable_iterate_symbols, 3); 43 DLWRAP(hsa_code_object_deserialize, 4); 44 DLWRAP(hsa_executable_load_code_object, 4); 45 DLWRAP(hsa_amd_agent_memory_pool_get_info, 4); 46 DLWRAP(hsa_amd_agent_iterate_memory_pools, 3); 47 DLWRAP(hsa_amd_memory_pool_allocate, 4); 48 DLWRAP(hsa_amd_memory_pool_free, 1); 49 DLWRAP(hsa_amd_memory_async_copy, 8); 50 DLWRAP(hsa_amd_memory_pool_get_info, 3); 51 DLWRAP(hsa_amd_agents_allow_access, 4); 52 DLWRAP(hsa_amd_memory_lock, 5); 53 DLWRAP(hsa_amd_memory_unlock, 1); 54 DLWRAP(hsa_amd_memory_fill, 3); 55 DLWRAP(hsa_amd_register_system_event_handler, 2); 56 57 DLWRAP_FINALIZE(); 58 59 #ifndef DYNAMIC_HSA_PATH 60 #define DYNAMIC_HSA_PATH "libhsa-runtime64.so" 61 #endif 62 63 #ifndef TARGET_NAME 64 #error "Missing TARGET_NAME macro" 65 #endif 66 #define DEBUG_PREFIX "Target " GETNAME(TARGET_NAME) " RTL" 67 68 static bool checkForHSA() { 69 // return true if dlopen succeeded and all functions found 70 71 const char *HsaLib = DYNAMIC_HSA_PATH; 72 void *DynlibHandle = dlopen(HsaLib, RTLD_NOW); 73 if (!DynlibHandle) { 74 DP("Unable to load library '%s': %s!\n", HsaLib, dlerror()); 75 return false; 76 } 77 78 for (size_t I = 0; I < dlwrap::size(); I++) { 79 const char *Sym = dlwrap::symbol(I); 80 81 void *P = dlsym(DynlibHandle, Sym); 82 if (P == nullptr) { 83 DP("Unable to find '%s' in '%s'!\n", Sym, HsaLib); 84 return false; 85 } 86 DP("Implementing %s with dlsym(%s) -> %p\n", Sym, Sym, P); 87 88 *dlwrap::pointer(I) = P; 89 } 90 91 return true; 92 } 93 94 hsa_status_t hsa_init() { 95 if (!checkForHSA()) { 96 return HSA_STATUS_ERROR; 97 } 98 return dlwrap_hsa_init(); 99 } 100