1 //===--- amdgpu/impl/interop_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 #include "interop_hsa.h"
9 #include "internal.h"
10 
11 hsa_status_t interop_hsa_get_symbol_info(
12     const std::map<std::string, atl_symbol_info_t> &SymbolInfoTable,
13     int DeviceId, const char *symbol, void **var_addr, unsigned int *var_size) {
14   /*
15      // Typical usage:
16      void *var_addr;
17      size_t var_size;
18      interop_hsa_get_symbol_addr(gpu_place, "symbol_name", &var_addr,
19      &var_size);
20      impl_memcpy(signal, host_add, var_addr, var_size);
21   */
22 
23   if (!symbol || !var_addr || !var_size)
24     return HSA_STATUS_ERROR;
25 
26   // get the symbol info
27   std::string symbolStr = std::string(symbol);
28   auto It = SymbolInfoTable.find(symbolStr);
29   if (It != SymbolInfoTable.end()) {
30     atl_symbol_info_t info = It->second;
31     *var_addr = reinterpret_cast<void *>(info.addr);
32     *var_size = info.size;
33     return HSA_STATUS_SUCCESS;
34   } else {
35     *var_addr = NULL;
36     *var_size = 0;
37     return HSA_STATUS_ERROR;
38   }
39 }
40 
41 hsa_status_t interop_hsa_get_kernel_info(
42     const std::map<std::string, atl_kernel_info_t> &KernelInfoTable,
43     int DeviceId, const char *kernel_name,
44     hsa_executable_symbol_info_t kernel_info, uint32_t *value) {
45   /*
46      // Typical usage:
47      uint32_t value;
48      interop_hsa_get_kernel_addr(gpu_place, "kernel_name",
49                                   HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_KERNARG_SEGMENT_SIZE,
50                                   &val);
51   */
52 
53   if (!kernel_name || !value)
54     return HSA_STATUS_ERROR;
55 
56   hsa_status_t status = HSA_STATUS_SUCCESS;
57   // get the kernel info
58   std::string kernelStr = std::string(kernel_name);
59   auto It = KernelInfoTable.find(kernelStr);
60   if (It != KernelInfoTable.end()) {
61     atl_kernel_info_t info = It->second;
62     switch (kernel_info) {
63     case HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_GROUP_SEGMENT_SIZE:
64       *value = info.group_segment_size;
65       break;
66     case HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_PRIVATE_SEGMENT_SIZE:
67       *value = info.private_segment_size;
68       break;
69     case HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_KERNARG_SEGMENT_SIZE:
70       // return the size for non-implicit args
71       *value = info.kernel_segment_size - sizeof(impl_implicit_args_t);
72       break;
73     default:
74       *value = 0;
75       status = HSA_STATUS_ERROR;
76       break;
77     }
78   } else {
79     *value = 0;
80     status = HSA_STATUS_ERROR;
81   }
82 
83   return status;
84 }
85