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237957cc AS |
1 | /* Plugin for AMD GCN execution. |
2 | ||
83ffe9cd | 3 | Copyright (C) 2013-2023 Free Software Foundation, Inc. |
237957cc AS |
4 | |
5 | Contributed by Mentor Embedded | |
6 | ||
7 | This file is part of the GNU Offloading and Multi Processing Library | |
8 | (libgomp). | |
9 | ||
10 | Libgomp is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 3, or (at your option) | |
13 | any later version. | |
14 | ||
15 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
16 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
17 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
18 | more details. | |
19 | ||
20 | Under Section 7 of GPL version 3, you are granted additional | |
21 | permissions described in the GCC Runtime Library Exception, version | |
22 | 3.1, as published by the Free Software Foundation. | |
23 | ||
24 | You should have received a copy of the GNU General Public License and | |
25 | a copy of the GCC Runtime Library Exception along with this program; | |
26 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
27 | <http://www.gnu.org/licenses/>. */ | |
28 | ||
29 | /* {{{ Includes and defines */ | |
30 | ||
31 | #include "config.h" | |
0bac793e | 32 | #include "symcat.h" |
237957cc AS |
33 | #include <stdio.h> |
34 | #include <stdlib.h> | |
35 | #include <string.h> | |
36 | #include <pthread.h> | |
37 | #include <inttypes.h> | |
38 | #include <stdbool.h> | |
39 | #include <limits.h> | |
40 | #include <hsa.h> | |
85f0a4d9 | 41 | #include <hsa_ext_amd.h> |
237957cc AS |
42 | #include <dlfcn.h> |
43 | #include <signal.h> | |
44 | #include "libgomp-plugin.h" | |
8c05d8cd | 45 | #include "config/gcn/libgomp-gcn.h" /* For struct output. */ |
237957cc AS |
46 | #include "gomp-constants.h" |
47 | #include <elf.h> | |
48 | #include "oacc-plugin.h" | |
49 | #include "oacc-int.h" | |
50 | #include <assert.h> | |
51 | ||
237957cc | 52 | /* These probably won't be in elf.h for a while. */ |
97981e13 | 53 | #ifndef R_AMDGPU_NONE |
237957cc AS |
54 | #define R_AMDGPU_NONE 0 |
55 | #define R_AMDGPU_ABS32_LO 1 /* (S + A) & 0xFFFFFFFF */ | |
56 | #define R_AMDGPU_ABS32_HI 2 /* (S + A) >> 32 */ | |
57 | #define R_AMDGPU_ABS64 3 /* S + A */ | |
58 | #define R_AMDGPU_REL32 4 /* S + A - P */ | |
59 | #define R_AMDGPU_REL64 5 /* S + A - P */ | |
60 | #define R_AMDGPU_ABS32 6 /* S + A */ | |
61 | #define R_AMDGPU_GOTPCREL 7 /* G + GOT + A - P */ | |
62 | #define R_AMDGPU_GOTPCREL32_LO 8 /* (G + GOT + A - P) & 0xFFFFFFFF */ | |
63 | #define R_AMDGPU_GOTPCREL32_HI 9 /* (G + GOT + A - P) >> 32 */ | |
64 | #define R_AMDGPU_REL32_LO 10 /* (S + A - P) & 0xFFFFFFFF */ | |
65 | #define R_AMDGPU_REL32_HI 11 /* (S + A - P) >> 32 */ | |
237957cc | 66 | #define R_AMDGPU_RELATIVE64 13 /* B + A */ |
97981e13 | 67 | #endif |
237957cc AS |
68 | |
69 | /* GCN specific definitions for asynchronous queues. */ | |
70 | ||
71 | #define ASYNC_QUEUE_SIZE 64 | |
72 | #define DRAIN_QUEUE_SYNCHRONOUS_P false | |
73 | #define DEBUG_QUEUES 0 | |
74 | #define DEBUG_THREAD_SLEEP 0 | |
75 | #define DEBUG_THREAD_SIGNAL 0 | |
76 | ||
77 | /* Defaults. */ | |
78 | #define DEFAULT_GCN_HEAP_SIZE (100*1024*1024) /* 100MB. */ | |
79 | ||
80 | /* Secure getenv() which returns NULL if running as SUID/SGID. */ | |
81 | #ifndef HAVE_SECURE_GETENV | |
82 | #ifdef HAVE___SECURE_GETENV | |
83 | #define secure_getenv __secure_getenv | |
84 | #elif defined (HAVE_UNISTD_H) && defined(HAVE_GETUID) && defined(HAVE_GETEUID) \ | |
85 | && defined(HAVE_GETGID) && defined(HAVE_GETEGID) | |
86 | ||
87 | #include <unistd.h> | |
88 | ||
89 | /* Implementation of secure_getenv() for targets where it is not provided but | |
90 | we have at least means to test real and effective IDs. */ | |
91 | ||
92 | static char * | |
93 | secure_getenv (const char *name) | |
94 | { | |
95 | if ((getuid () == geteuid ()) && (getgid () == getegid ())) | |
96 | return getenv (name); | |
97 | else | |
98 | return NULL; | |
99 | } | |
100 | ||
101 | #else | |
102 | #define secure_getenv getenv | |
103 | #endif | |
104 | #endif | |
105 | ||
106 | /* }}} */ | |
107 | /* {{{ Types */ | |
108 | ||
93d90219 | 109 | /* GCN-specific implementation of the GOMP_PLUGIN_acc_thread data. */ |
237957cc AS |
110 | |
111 | struct gcn_thread | |
112 | { | |
113 | /* The thread number from the async clause, or GOMP_ASYNC_SYNC. */ | |
114 | int async; | |
115 | }; | |
116 | ||
117 | /* As an HSA runtime is dlopened, following structure defines function | |
118 | pointers utilized by the HSA plug-in. */ | |
119 | ||
120 | struct hsa_runtime_fn_info | |
121 | { | |
122 | /* HSA runtime. */ | |
123 | hsa_status_t (*hsa_status_string_fn) (hsa_status_t status, | |
124 | const char **status_string); | |
125 | hsa_status_t (*hsa_system_get_info_fn) (hsa_system_info_t attribute, | |
126 | void *value); | |
127 | hsa_status_t (*hsa_agent_get_info_fn) (hsa_agent_t agent, | |
128 | hsa_agent_info_t attribute, | |
129 | void *value); | |
130 | hsa_status_t (*hsa_isa_get_info_fn)(hsa_isa_t isa, | |
131 | hsa_isa_info_t attribute, | |
132 | uint32_t index, | |
133 | void *value); | |
134 | hsa_status_t (*hsa_init_fn) (void); | |
135 | hsa_status_t (*hsa_iterate_agents_fn) | |
136 | (hsa_status_t (*callback)(hsa_agent_t agent, void *data), void *data); | |
137 | hsa_status_t (*hsa_region_get_info_fn) (hsa_region_t region, | |
138 | hsa_region_info_t attribute, | |
139 | void *value); | |
140 | hsa_status_t (*hsa_queue_create_fn) | |
141 | (hsa_agent_t agent, uint32_t size, hsa_queue_type_t type, | |
142 | void (*callback)(hsa_status_t status, hsa_queue_t *source, void *data), | |
143 | void *data, uint32_t private_segment_size, | |
144 | uint32_t group_segment_size, hsa_queue_t **queue); | |
145 | hsa_status_t (*hsa_agent_iterate_regions_fn) | |
146 | (hsa_agent_t agent, | |
147 | hsa_status_t (*callback)(hsa_region_t region, void *data), void *data); | |
148 | hsa_status_t (*hsa_executable_destroy_fn) (hsa_executable_t executable); | |
149 | hsa_status_t (*hsa_executable_create_fn) | |
150 | (hsa_profile_t profile, hsa_executable_state_t executable_state, | |
151 | const char *options, hsa_executable_t *executable); | |
152 | hsa_status_t (*hsa_executable_global_variable_define_fn) | |
153 | (hsa_executable_t executable, const char *variable_name, void *address); | |
154 | hsa_status_t (*hsa_executable_load_code_object_fn) | |
155 | (hsa_executable_t executable, hsa_agent_t agent, | |
156 | hsa_code_object_t code_object, const char *options); | |
157 | hsa_status_t (*hsa_executable_freeze_fn)(hsa_executable_t executable, | |
158 | const char *options); | |
159 | hsa_status_t (*hsa_signal_create_fn) (hsa_signal_value_t initial_value, | |
160 | uint32_t num_consumers, | |
161 | const hsa_agent_t *consumers, | |
162 | hsa_signal_t *signal); | |
163 | hsa_status_t (*hsa_memory_allocate_fn) (hsa_region_t region, size_t size, | |
164 | void **ptr); | |
165 | hsa_status_t (*hsa_memory_assign_agent_fn) (void *ptr, hsa_agent_t agent, | |
166 | hsa_access_permission_t access); | |
167 | hsa_status_t (*hsa_memory_copy_fn)(void *dst, const void *src, size_t size); | |
168 | hsa_status_t (*hsa_memory_free_fn) (void *ptr); | |
169 | hsa_status_t (*hsa_signal_destroy_fn) (hsa_signal_t signal); | |
170 | hsa_status_t (*hsa_executable_get_symbol_fn) | |
171 | (hsa_executable_t executable, const char *module_name, | |
172 | const char *symbol_name, hsa_agent_t agent, int32_t call_convention, | |
173 | hsa_executable_symbol_t *symbol); | |
174 | hsa_status_t (*hsa_executable_symbol_get_info_fn) | |
175 | (hsa_executable_symbol_t executable_symbol, | |
176 | hsa_executable_symbol_info_t attribute, void *value); | |
177 | hsa_status_t (*hsa_executable_iterate_symbols_fn) | |
178 | (hsa_executable_t executable, | |
179 | hsa_status_t (*callback)(hsa_executable_t executable, | |
180 | hsa_executable_symbol_t symbol, void *data), | |
181 | void *data); | |
182 | uint64_t (*hsa_queue_add_write_index_release_fn) (const hsa_queue_t *queue, | |
183 | uint64_t value); | |
184 | uint64_t (*hsa_queue_load_read_index_acquire_fn) (const hsa_queue_t *queue); | |
185 | void (*hsa_signal_store_relaxed_fn) (hsa_signal_t signal, | |
186 | hsa_signal_value_t value); | |
187 | void (*hsa_signal_store_release_fn) (hsa_signal_t signal, | |
188 | hsa_signal_value_t value); | |
189 | hsa_signal_value_t (*hsa_signal_wait_acquire_fn) | |
190 | (hsa_signal_t signal, hsa_signal_condition_t condition, | |
191 | hsa_signal_value_t compare_value, uint64_t timeout_hint, | |
192 | hsa_wait_state_t wait_state_hint); | |
193 | hsa_signal_value_t (*hsa_signal_load_acquire_fn) (hsa_signal_t signal); | |
194 | hsa_status_t (*hsa_queue_destroy_fn) (hsa_queue_t *queue); | |
195 | ||
196 | hsa_status_t (*hsa_code_object_deserialize_fn) | |
197 | (void *serialized_code_object, size_t serialized_code_object_size, | |
198 | const char *options, hsa_code_object_t *code_object); | |
199 | }; | |
200 | ||
201 | /* Structure describing the run-time and grid properties of an HSA kernel | |
202 | lauch. This needs to match the format passed to GOMP_OFFLOAD_run. */ | |
203 | ||
204 | struct GOMP_kernel_launch_attributes | |
205 | { | |
206 | /* Number of dimensions the workload has. Maximum number is 3. */ | |
207 | uint32_t ndim; | |
208 | /* Size of the grid in the three respective dimensions. */ | |
209 | uint32_t gdims[3]; | |
210 | /* Size of work-groups in the respective dimensions. */ | |
211 | uint32_t wdims[3]; | |
212 | }; | |
213 | ||
214 | /* Collection of information needed for a dispatch of a kernel from a | |
215 | kernel. */ | |
216 | ||
217 | struct kernel_dispatch | |
218 | { | |
219 | struct agent_info *agent; | |
220 | /* Pointer to a command queue associated with a kernel dispatch agent. */ | |
221 | void *queue; | |
222 | /* Pointer to a memory space used for kernel arguments passing. */ | |
223 | void *kernarg_address; | |
224 | /* Kernel object. */ | |
225 | uint64_t object; | |
226 | /* Synchronization signal used for dispatch synchronization. */ | |
227 | uint64_t signal; | |
228 | /* Private segment size. */ | |
229 | uint32_t private_segment_size; | |
230 | /* Group segment size. */ | |
231 | uint32_t group_segment_size; | |
232 | }; | |
233 | ||
234 | /* Structure of the kernargs segment, supporting console output. | |
235 | ||
236 | This needs to match the definitions in Newlib, and the expectations | |
237 | in libgomp target code. */ | |
238 | ||
239 | struct kernargs { | |
f6fff8a6 | 240 | struct kernargs_abi abi; |
237957cc AS |
241 | |
242 | /* Output data. */ | |
8c05d8cd | 243 | struct output output_data; |
237957cc AS |
244 | }; |
245 | ||
246 | /* A queue entry for a future asynchronous launch. */ | |
247 | ||
248 | struct kernel_launch | |
249 | { | |
250 | struct kernel_info *kernel; | |
251 | void *vars; | |
252 | struct GOMP_kernel_launch_attributes kla; | |
253 | }; | |
254 | ||
255 | /* A queue entry for a future callback. */ | |
256 | ||
257 | struct callback | |
258 | { | |
259 | void (*fn)(void *); | |
260 | void *data; | |
261 | }; | |
262 | ||
263 | /* A data struct for the copy_data callback. */ | |
264 | ||
265 | struct copy_data | |
266 | { | |
267 | void *dst; | |
268 | const void *src; | |
269 | size_t len; | |
237957cc AS |
270 | struct goacc_asyncqueue *aq; |
271 | }; | |
272 | ||
273 | /* A queue entry for a placeholder. These correspond to a wait event. */ | |
274 | ||
275 | struct placeholder | |
276 | { | |
277 | int executed; | |
278 | pthread_cond_t cond; | |
279 | pthread_mutex_t mutex; | |
280 | }; | |
281 | ||
282 | /* A queue entry for a wait directive. */ | |
283 | ||
284 | struct asyncwait_info | |
285 | { | |
286 | struct placeholder *placeholderp; | |
287 | }; | |
288 | ||
289 | /* Encode the type of an entry in an async queue. */ | |
290 | ||
291 | enum entry_type | |
292 | { | |
293 | KERNEL_LAUNCH, | |
294 | CALLBACK, | |
295 | ASYNC_WAIT, | |
296 | ASYNC_PLACEHOLDER | |
297 | }; | |
298 | ||
299 | /* An entry in an async queue. */ | |
300 | ||
301 | struct queue_entry | |
302 | { | |
303 | enum entry_type type; | |
304 | union { | |
305 | struct kernel_launch launch; | |
306 | struct callback callback; | |
307 | struct asyncwait_info asyncwait; | |
308 | struct placeholder placeholder; | |
309 | } u; | |
310 | }; | |
311 | ||
312 | /* An async queue header. | |
313 | ||
314 | OpenMP may create one of these. | |
315 | OpenACC may create many. */ | |
316 | ||
317 | struct goacc_asyncqueue | |
318 | { | |
319 | struct agent_info *agent; | |
320 | hsa_queue_t *hsa_queue; | |
321 | ||
322 | pthread_t thread_drain_queue; | |
323 | pthread_mutex_t mutex; | |
324 | pthread_cond_t queue_cond_in; | |
325 | pthread_cond_t queue_cond_out; | |
326 | struct queue_entry queue[ASYNC_QUEUE_SIZE]; | |
327 | int queue_first; | |
328 | int queue_n; | |
329 | int drain_queue_stop; | |
330 | ||
331 | int id; | |
332 | struct goacc_asyncqueue *prev; | |
333 | struct goacc_asyncqueue *next; | |
334 | }; | |
335 | ||
336 | /* Mkoffload uses this structure to describe a kernel. | |
337 | ||
338 | OpenMP kernel dimensions are passed at runtime. | |
339 | OpenACC kernel dimensions are passed at compile time, here. */ | |
340 | ||
341 | struct hsa_kernel_description | |
342 | { | |
343 | const char *name; | |
344 | int oacc_dims[3]; /* Only present for GCN kernels. */ | |
5a28e272 KCY |
345 | int sgpr_count; |
346 | int vpgr_count; | |
237957cc AS |
347 | }; |
348 | ||
349 | /* Mkoffload uses this structure to describe an offload variable. */ | |
350 | ||
351 | struct global_var_info | |
352 | { | |
353 | const char *name; | |
354 | void *address; | |
355 | }; | |
356 | ||
357 | /* Mkoffload uses this structure to describe all the kernels in a | |
358 | loadable module. These are passed the libgomp via static constructors. */ | |
359 | ||
360 | struct gcn_image_desc | |
361 | { | |
362 | struct gcn_image { | |
363 | size_t size; | |
364 | void *image; | |
365 | } *gcn_image; | |
366 | const unsigned kernel_count; | |
367 | struct hsa_kernel_description *kernel_infos; | |
368 | const unsigned global_variable_count; | |
237957cc AS |
369 | }; |
370 | ||
7d593fd6 FH |
371 | /* This enum mirrors the corresponding LLVM enum's values for all ISAs that we |
372 | support. | |
373 | See https://llvm.org/docs/AMDGPUUsage.html#amdgpu-ef-amdgpu-mach-table */ | |
374 | ||
375 | typedef enum { | |
7d593fd6 FH |
376 | EF_AMDGPU_MACH_AMDGCN_GFX803 = 0x02a, |
377 | EF_AMDGPU_MACH_AMDGCN_GFX900 = 0x02c, | |
378 | EF_AMDGPU_MACH_AMDGCN_GFX906 = 0x02f, | |
cde52d3a AS |
379 | EF_AMDGPU_MACH_AMDGCN_GFX908 = 0x030, |
380 | EF_AMDGPU_MACH_AMDGCN_GFX90a = 0x03f | |
7d593fd6 FH |
381 | } EF_AMDGPU_MACH; |
382 | ||
383 | const static int EF_AMDGPU_MACH_MASK = 0x000000ff; | |
384 | typedef EF_AMDGPU_MACH gcn_isa; | |
385 | ||
237957cc AS |
386 | /* Description of an HSA GPU agent (device) and the program associated with |
387 | it. */ | |
388 | ||
389 | struct agent_info | |
390 | { | |
391 | /* The HSA ID of the agent. Assigned when hsa_context is initialized. */ | |
392 | hsa_agent_t id; | |
393 | /* The user-visible device number. */ | |
394 | int device_id; | |
395 | /* Whether the agent has been initialized. The fields below are usable only | |
396 | if it has been. */ | |
397 | bool initialized; | |
7d593fd6 FH |
398 | |
399 | /* The instruction set architecture of the device. */ | |
400 | gcn_isa device_isa; | |
2e5ea579 FH |
401 | /* Name of the agent. */ |
402 | char name[64]; | |
403 | /* Name of the vendor of the agent. */ | |
404 | char vendor_name[64]; | |
237957cc AS |
405 | /* Command queues of the agent. */ |
406 | hsa_queue_t *sync_queue; | |
407 | struct goacc_asyncqueue *async_queues, *omp_async_queue; | |
408 | pthread_mutex_t async_queues_mutex; | |
409 | ||
410 | /* The HSA memory region from which to allocate kernel arguments. */ | |
411 | hsa_region_t kernarg_region; | |
412 | ||
413 | /* The HSA memory region from which to allocate device data. */ | |
414 | hsa_region_t data_region; | |
415 | ||
f6fff8a6 AS |
416 | /* Allocated ephemeral memories (team arena and stack space). */ |
417 | struct ephemeral_memories_list *ephemeral_memories_list; | |
418 | pthread_mutex_t ephemeral_memories_write_lock; | |
237957cc AS |
419 | |
420 | /* Read-write lock that protects kernels which are running or about to be run | |
421 | from interference with loading and unloading of images. Needs to be | |
422 | locked for reading while a kernel is being run, and for writing if the | |
423 | list of modules is manipulated (and thus the HSA program invalidated). */ | |
424 | pthread_rwlock_t module_rwlock; | |
425 | ||
426 | /* The module associated with this kernel. */ | |
427 | struct module_info *module; | |
428 | ||
429 | /* Mutex enforcing that only one thread will finalize the HSA program. A | |
430 | thread should have locked agent->module_rwlock for reading before | |
431 | acquiring it. */ | |
432 | pthread_mutex_t prog_mutex; | |
433 | /* Flag whether the HSA program that consists of all the modules has been | |
434 | finalized. */ | |
435 | bool prog_finalized; | |
436 | /* HSA executable - the finalized program that is used to locate kernels. */ | |
437 | hsa_executable_t executable; | |
438 | }; | |
439 | ||
440 | /* Information required to identify, finalize and run any given kernel. */ | |
441 | ||
442 | enum offload_kind {KIND_UNKNOWN, KIND_OPENMP, KIND_OPENACC}; | |
443 | ||
444 | struct kernel_info | |
445 | { | |
446 | /* Name of the kernel, required to locate it within the GCN object-code | |
447 | module. */ | |
448 | const char *name; | |
449 | /* The specific agent the kernel has been or will be finalized for and run | |
450 | on. */ | |
451 | struct agent_info *agent; | |
452 | /* The specific module where the kernel takes place. */ | |
453 | struct module_info *module; | |
5a28e272 KCY |
454 | /* Information provided by mkoffload associated with the kernel. */ |
455 | struct hsa_kernel_description *description; | |
237957cc AS |
456 | /* Mutex enforcing that at most once thread ever initializes a kernel for |
457 | use. A thread should have locked agent->module_rwlock for reading before | |
458 | acquiring it. */ | |
459 | pthread_mutex_t init_mutex; | |
460 | /* Flag indicating whether the kernel has been initialized and all fields | |
461 | below it contain valid data. */ | |
462 | bool initialized; | |
463 | /* Flag indicating that the kernel has a problem that blocks an execution. */ | |
464 | bool initialization_failed; | |
465 | /* The object to be put into the dispatch queue. */ | |
466 | uint64_t object; | |
467 | /* Required size of kernel arguments. */ | |
468 | uint32_t kernarg_segment_size; | |
469 | /* Required size of group segment. */ | |
470 | uint32_t group_segment_size; | |
471 | /* Required size of private segment. */ | |
472 | uint32_t private_segment_size; | |
473 | /* Set up for OpenMP or OpenACC? */ | |
474 | enum offload_kind kind; | |
475 | }; | |
476 | ||
477 | /* Information about a particular GCN module, its image and kernels. */ | |
478 | ||
479 | struct module_info | |
480 | { | |
481 | /* The description with which the program has registered the image. */ | |
482 | struct gcn_image_desc *image_desc; | |
483 | /* GCN heap allocation. */ | |
484 | struct heap *heap; | |
485 | /* Physical boundaries of the loaded module. */ | |
486 | Elf64_Addr phys_address_start; | |
487 | Elf64_Addr phys_address_end; | |
488 | ||
489 | bool constructors_run_p; | |
490 | struct kernel_info *init_array_func, *fini_array_func; | |
491 | ||
492 | /* Number of kernels in this module. */ | |
493 | int kernel_count; | |
494 | /* An array of kernel_info structures describing each kernel in this | |
495 | module. */ | |
496 | struct kernel_info kernels[]; | |
497 | }; | |
498 | ||
499 | /* A linked list of memory arenas allocated on the device. | |
f6fff8a6 AS |
500 | These are used by OpenMP, as a means to optimize per-team malloc, |
501 | and for host-accessible stack space. */ | |
237957cc | 502 | |
f6fff8a6 | 503 | struct ephemeral_memories_list |
237957cc | 504 | { |
f6fff8a6 | 505 | struct ephemeral_memories_list *next; |
237957cc | 506 | |
f6fff8a6 AS |
507 | /* The size is determined by the number of teams and threads. */ |
508 | size_t size; | |
509 | /* The device address allocated memory. */ | |
510 | void *address; | |
511 | /* A flag to prevent two asynchronous kernels trying to use the same memory. | |
237957cc AS |
512 | The mutex is locked until the kernel exits. */ |
513 | pthread_mutex_t in_use; | |
514 | }; | |
515 | ||
516 | /* Information about the whole HSA environment and all of its agents. */ | |
517 | ||
518 | struct hsa_context_info | |
519 | { | |
520 | /* Whether the structure has been initialized. */ | |
521 | bool initialized; | |
522 | /* Number of usable GPU HSA agents in the system. */ | |
523 | int agent_count; | |
524 | /* Array of agent_info structures describing the individual HSA agents. */ | |
525 | struct agent_info *agents; | |
2e5ea579 FH |
526 | /* Driver version string. */ |
527 | char driver_version_s[30]; | |
237957cc AS |
528 | }; |
529 | ||
237957cc AS |
530 | /* }}} */ |
531 | /* {{{ Global variables */ | |
532 | ||
533 | /* Information about the whole HSA environment and all of its agents. */ | |
534 | ||
535 | static struct hsa_context_info hsa_context; | |
536 | ||
537 | /* HSA runtime functions that are initialized in init_hsa_context. */ | |
538 | ||
539 | static struct hsa_runtime_fn_info hsa_fns; | |
540 | ||
541 | /* Heap space, allocated target-side, provided for use of newlib malloc. | |
542 | Each module should have it's own heap allocated. | |
543 | Beware that heap usage increases with OpenMP teams. See also arenas. */ | |
544 | ||
545 | static size_t gcn_kernel_heap_size = DEFAULT_GCN_HEAP_SIZE; | |
546 | ||
f6fff8a6 AS |
547 | /* Ephemeral memory sizes for each kernel launch. */ |
548 | ||
549 | static int team_arena_size = DEFAULT_TEAM_ARENA_SIZE; | |
550 | static int stack_size = DEFAULT_GCN_STACK_SIZE; | |
551 | ||
237957cc AS |
552 | /* Flag to decide whether print to stderr information about what is going on. |
553 | Set in init_debug depending on environment variables. */ | |
554 | ||
555 | static bool debug; | |
556 | ||
557 | /* Flag to decide if the runtime should suppress a possible fallback to host | |
558 | execution. */ | |
559 | ||
560 | static bool suppress_host_fallback; | |
561 | ||
562 | /* Flag to locate HSA runtime shared library that is dlopened | |
563 | by this plug-in. */ | |
564 | ||
565 | static const char *hsa_runtime_lib; | |
566 | ||
567 | /* Flag to decide if the runtime should support also CPU devices (can be | |
568 | a simulator). */ | |
569 | ||
570 | static bool support_cpu_devices; | |
571 | ||
572 | /* Runtime dimension overrides. Zero indicates default. */ | |
573 | ||
574 | static int override_x_dim = 0; | |
575 | static int override_z_dim = 0; | |
576 | ||
577 | /* }}} */ | |
578 | /* {{{ Debug & Diagnostic */ | |
579 | ||
580 | /* Print a message to stderr if GCN_DEBUG value is set to true. */ | |
581 | ||
582 | #define DEBUG_PRINT(...) \ | |
583 | do \ | |
584 | { \ | |
585 | if (debug) \ | |
586 | { \ | |
587 | fprintf (stderr, __VA_ARGS__); \ | |
588 | } \ | |
589 | } \ | |
590 | while (false); | |
591 | ||
592 | /* Flush stderr if GCN_DEBUG value is set to true. */ | |
593 | ||
594 | #define DEBUG_FLUSH() \ | |
595 | do { \ | |
596 | if (debug) \ | |
597 | fflush (stderr); \ | |
598 | } while (false) | |
599 | ||
600 | /* Print a logging message with PREFIX to stderr if GCN_DEBUG value | |
601 | is set to true. */ | |
602 | ||
603 | #define DEBUG_LOG(prefix, ...) \ | |
604 | do \ | |
605 | { \ | |
606 | DEBUG_PRINT (prefix); \ | |
607 | DEBUG_PRINT (__VA_ARGS__); \ | |
608 | DEBUG_FLUSH (); \ | |
609 | } while (false) | |
610 | ||
611 | /* Print a debugging message to stderr. */ | |
612 | ||
613 | #define GCN_DEBUG(...) DEBUG_LOG ("GCN debug: ", __VA_ARGS__) | |
614 | ||
615 | /* Print a warning message to stderr. */ | |
616 | ||
617 | #define GCN_WARNING(...) DEBUG_LOG ("GCN warning: ", __VA_ARGS__) | |
618 | ||
619 | /* Print HSA warning STR with an HSA STATUS code. */ | |
620 | ||
621 | static void | |
622 | hsa_warn (const char *str, hsa_status_t status) | |
623 | { | |
624 | if (!debug) | |
625 | return; | |
626 | ||
627 | const char *hsa_error_msg = "[unknown]"; | |
628 | hsa_fns.hsa_status_string_fn (status, &hsa_error_msg); | |
629 | ||
630 | fprintf (stderr, "GCN warning: %s\nRuntime message: %s\n", str, | |
631 | hsa_error_msg); | |
632 | } | |
633 | ||
634 | /* Report a fatal error STR together with the HSA error corresponding to STATUS | |
635 | and terminate execution of the current process. */ | |
636 | ||
637 | static void | |
638 | hsa_fatal (const char *str, hsa_status_t status) | |
639 | { | |
640 | const char *hsa_error_msg = "[unknown]"; | |
641 | hsa_fns.hsa_status_string_fn (status, &hsa_error_msg); | |
642 | GOMP_PLUGIN_fatal ("GCN fatal error: %s\nRuntime message: %s\n", str, | |
643 | hsa_error_msg); | |
644 | } | |
645 | ||
646 | /* Like hsa_fatal, except only report error message, and return FALSE | |
647 | for propagating error processing to outside of plugin. */ | |
648 | ||
649 | static bool | |
650 | hsa_error (const char *str, hsa_status_t status) | |
651 | { | |
652 | const char *hsa_error_msg = "[unknown]"; | |
653 | hsa_fns.hsa_status_string_fn (status, &hsa_error_msg); | |
654 | GOMP_PLUGIN_error ("GCN fatal error: %s\nRuntime message: %s\n", str, | |
655 | hsa_error_msg); | |
656 | return false; | |
657 | } | |
658 | ||
659 | /* Dump information about the available hardware. */ | |
660 | ||
661 | static void | |
662 | dump_hsa_system_info (void) | |
663 | { | |
664 | hsa_status_t status; | |
665 | ||
666 | hsa_endianness_t endianness; | |
667 | status = hsa_fns.hsa_system_get_info_fn (HSA_SYSTEM_INFO_ENDIANNESS, | |
668 | &endianness); | |
669 | if (status == HSA_STATUS_SUCCESS) | |
670 | switch (endianness) | |
671 | { | |
672 | case HSA_ENDIANNESS_LITTLE: | |
673 | GCN_DEBUG ("HSA_SYSTEM_INFO_ENDIANNESS: LITTLE\n"); | |
674 | break; | |
675 | case HSA_ENDIANNESS_BIG: | |
676 | GCN_DEBUG ("HSA_SYSTEM_INFO_ENDIANNESS: BIG\n"); | |
677 | break; | |
678 | default: | |
679 | GCN_WARNING ("HSA_SYSTEM_INFO_ENDIANNESS: UNKNOWN\n"); | |
680 | } | |
681 | else | |
682 | GCN_WARNING ("HSA_SYSTEM_INFO_ENDIANNESS: FAILED\n"); | |
683 | ||
684 | uint8_t extensions[128]; | |
685 | status = hsa_fns.hsa_system_get_info_fn (HSA_SYSTEM_INFO_EXTENSIONS, | |
686 | &extensions); | |
687 | if (status == HSA_STATUS_SUCCESS) | |
688 | { | |
689 | if (extensions[0] & (1 << HSA_EXTENSION_IMAGES)) | |
690 | GCN_DEBUG ("HSA_SYSTEM_INFO_EXTENSIONS: IMAGES\n"); | |
691 | } | |
692 | else | |
693 | GCN_WARNING ("HSA_SYSTEM_INFO_EXTENSIONS: FAILED\n"); | |
694 | } | |
695 | ||
696 | /* Dump information about the available hardware. */ | |
697 | ||
698 | static void | |
699 | dump_machine_model (hsa_machine_model_t machine_model, const char *s) | |
700 | { | |
701 | switch (machine_model) | |
702 | { | |
703 | case HSA_MACHINE_MODEL_SMALL: | |
704 | GCN_DEBUG ("%s: SMALL\n", s); | |
705 | break; | |
706 | case HSA_MACHINE_MODEL_LARGE: | |
707 | GCN_DEBUG ("%s: LARGE\n", s); | |
708 | break; | |
709 | default: | |
710 | GCN_WARNING ("%s: UNKNOWN\n", s); | |
711 | break; | |
712 | } | |
713 | } | |
714 | ||
715 | /* Dump information about the available hardware. */ | |
716 | ||
717 | static void | |
718 | dump_profile (hsa_profile_t profile, const char *s) | |
719 | { | |
720 | switch (profile) | |
721 | { | |
722 | case HSA_PROFILE_FULL: | |
723 | GCN_DEBUG ("%s: FULL\n", s); | |
724 | break; | |
725 | case HSA_PROFILE_BASE: | |
726 | GCN_DEBUG ("%s: BASE\n", s); | |
727 | break; | |
728 | default: | |
729 | GCN_WARNING ("%s: UNKNOWN\n", s); | |
730 | break; | |
731 | } | |
732 | } | |
733 | ||
734 | /* Dump information about a device memory region. */ | |
735 | ||
736 | static hsa_status_t | |
737 | dump_hsa_region (hsa_region_t region, void *data __attribute__((unused))) | |
738 | { | |
739 | hsa_status_t status; | |
740 | ||
741 | hsa_region_segment_t segment; | |
742 | status = hsa_fns.hsa_region_get_info_fn (region, HSA_REGION_INFO_SEGMENT, | |
743 | &segment); | |
744 | if (status == HSA_STATUS_SUCCESS) | |
745 | { | |
746 | if (segment == HSA_REGION_SEGMENT_GLOBAL) | |
747 | GCN_DEBUG ("HSA_REGION_INFO_SEGMENT: GLOBAL\n"); | |
748 | else if (segment == HSA_REGION_SEGMENT_READONLY) | |
749 | GCN_DEBUG ("HSA_REGION_INFO_SEGMENT: READONLY\n"); | |
750 | else if (segment == HSA_REGION_SEGMENT_PRIVATE) | |
751 | GCN_DEBUG ("HSA_REGION_INFO_SEGMENT: PRIVATE\n"); | |
752 | else if (segment == HSA_REGION_SEGMENT_GROUP) | |
753 | GCN_DEBUG ("HSA_REGION_INFO_SEGMENT: GROUP\n"); | |
754 | else | |
755 | GCN_WARNING ("HSA_REGION_INFO_SEGMENT: UNKNOWN\n"); | |
756 | } | |
757 | else | |
758 | GCN_WARNING ("HSA_REGION_INFO_SEGMENT: FAILED\n"); | |
759 | ||
760 | if (segment == HSA_REGION_SEGMENT_GLOBAL) | |
761 | { | |
762 | uint32_t flags; | |
763 | status | |
764 | = hsa_fns.hsa_region_get_info_fn (region, HSA_REGION_INFO_GLOBAL_FLAGS, | |
765 | &flags); | |
766 | if (status == HSA_STATUS_SUCCESS) | |
767 | { | |
768 | if (flags & HSA_REGION_GLOBAL_FLAG_KERNARG) | |
769 | GCN_DEBUG ("HSA_REGION_INFO_GLOBAL_FLAGS: KERNARG\n"); | |
770 | if (flags & HSA_REGION_GLOBAL_FLAG_FINE_GRAINED) | |
771 | GCN_DEBUG ("HSA_REGION_INFO_GLOBAL_FLAGS: FINE_GRAINED\n"); | |
772 | if (flags & HSA_REGION_GLOBAL_FLAG_COARSE_GRAINED) | |
773 | GCN_DEBUG ("HSA_REGION_INFO_GLOBAL_FLAGS: COARSE_GRAINED\n"); | |
774 | } | |
775 | else | |
776 | GCN_WARNING ("HSA_REGION_INFO_GLOBAL_FLAGS: FAILED\n"); | |
777 | } | |
778 | ||
779 | size_t size; | |
780 | status = hsa_fns.hsa_region_get_info_fn (region, HSA_REGION_INFO_SIZE, &size); | |
781 | if (status == HSA_STATUS_SUCCESS) | |
782 | GCN_DEBUG ("HSA_REGION_INFO_SIZE: %zu\n", size); | |
783 | else | |
784 | GCN_WARNING ("HSA_REGION_INFO_SIZE: FAILED\n"); | |
785 | ||
786 | status | |
787 | = hsa_fns.hsa_region_get_info_fn (region, HSA_REGION_INFO_ALLOC_MAX_SIZE, | |
788 | &size); | |
789 | if (status == HSA_STATUS_SUCCESS) | |
790 | GCN_DEBUG ("HSA_REGION_INFO_ALLOC_MAX_SIZE: %zu\n", size); | |
791 | else | |
792 | GCN_WARNING ("HSA_REGION_INFO_ALLOC_MAX_SIZE: FAILED\n"); | |
793 | ||
794 | bool alloc_allowed; | |
795 | status | |
796 | = hsa_fns.hsa_region_get_info_fn (region, | |
797 | HSA_REGION_INFO_RUNTIME_ALLOC_ALLOWED, | |
798 | &alloc_allowed); | |
799 | if (status == HSA_STATUS_SUCCESS) | |
800 | GCN_DEBUG ("HSA_REGION_INFO_RUNTIME_ALLOC_ALLOWED: %u\n", alloc_allowed); | |
801 | else | |
802 | GCN_WARNING ("HSA_REGION_INFO_RUNTIME_ALLOC_ALLOWED: FAILED\n"); | |
803 | ||
804 | if (status != HSA_STATUS_SUCCESS || !alloc_allowed) | |
805 | return HSA_STATUS_SUCCESS; | |
806 | ||
807 | status | |
808 | = hsa_fns.hsa_region_get_info_fn (region, | |
809 | HSA_REGION_INFO_RUNTIME_ALLOC_GRANULE, | |
810 | &size); | |
811 | if (status == HSA_STATUS_SUCCESS) | |
812 | GCN_DEBUG ("HSA_REGION_INFO_RUNTIME_ALLOC_GRANULE: %zu\n", size); | |
813 | else | |
814 | GCN_WARNING ("HSA_REGION_INFO_RUNTIME_ALLOC_GRANULE: FAILED\n"); | |
815 | ||
816 | size_t align; | |
817 | status | |
818 | = hsa_fns.hsa_region_get_info_fn (region, | |
819 | HSA_REGION_INFO_RUNTIME_ALLOC_ALIGNMENT, | |
820 | &align); | |
821 | if (status == HSA_STATUS_SUCCESS) | |
822 | GCN_DEBUG ("HSA_REGION_INFO_RUNTIME_ALLOC_ALIGNMENT: %zu\n", align); | |
823 | else | |
824 | GCN_WARNING ("HSA_REGION_INFO_RUNTIME_ALLOC_ALIGNMENT: FAILED\n"); | |
825 | ||
826 | return HSA_STATUS_SUCCESS; | |
827 | } | |
828 | ||
829 | /* Dump information about all the device memory regions. */ | |
830 | ||
831 | static void | |
832 | dump_hsa_regions (hsa_agent_t agent) | |
833 | { | |
834 | hsa_status_t status; | |
835 | status = hsa_fns.hsa_agent_iterate_regions_fn (agent, | |
836 | dump_hsa_region, | |
837 | NULL); | |
838 | if (status != HSA_STATUS_SUCCESS) | |
839 | hsa_error ("Dumping hsa regions failed", status); | |
840 | } | |
841 | ||
842 | /* Dump information about the available devices. */ | |
843 | ||
844 | static hsa_status_t | |
845 | dump_hsa_agent_info (hsa_agent_t agent, void *data __attribute__((unused))) | |
846 | { | |
847 | hsa_status_t status; | |
848 | ||
849 | char buf[64]; | |
850 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_NAME, | |
851 | &buf); | |
852 | if (status == HSA_STATUS_SUCCESS) | |
853 | GCN_DEBUG ("HSA_AGENT_INFO_NAME: %s\n", buf); | |
854 | else | |
855 | GCN_WARNING ("HSA_AGENT_INFO_NAME: FAILED\n"); | |
856 | ||
857 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_VENDOR_NAME, | |
858 | &buf); | |
859 | if (status == HSA_STATUS_SUCCESS) | |
860 | GCN_DEBUG ("HSA_AGENT_INFO_VENDOR_NAME: %s\n", buf); | |
861 | else | |
862 | GCN_WARNING ("HSA_AGENT_INFO_VENDOR_NAME: FAILED\n"); | |
863 | ||
864 | hsa_machine_model_t machine_model; | |
865 | status | |
866 | = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_MACHINE_MODEL, | |
867 | &machine_model); | |
868 | if (status == HSA_STATUS_SUCCESS) | |
869 | dump_machine_model (machine_model, "HSA_AGENT_INFO_MACHINE_MODEL"); | |
870 | else | |
871 | GCN_WARNING ("HSA_AGENT_INFO_MACHINE_MODEL: FAILED\n"); | |
872 | ||
873 | hsa_profile_t profile; | |
874 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_PROFILE, | |
875 | &profile); | |
876 | if (status == HSA_STATUS_SUCCESS) | |
877 | dump_profile (profile, "HSA_AGENT_INFO_PROFILE"); | |
878 | else | |
879 | GCN_WARNING ("HSA_AGENT_INFO_PROFILE: FAILED\n"); | |
880 | ||
881 | hsa_device_type_t device_type; | |
882 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_DEVICE, | |
883 | &device_type); | |
884 | if (status == HSA_STATUS_SUCCESS) | |
885 | { | |
886 | switch (device_type) | |
887 | { | |
888 | case HSA_DEVICE_TYPE_CPU: | |
889 | GCN_DEBUG ("HSA_AGENT_INFO_DEVICE: CPU\n"); | |
890 | break; | |
891 | case HSA_DEVICE_TYPE_GPU: | |
892 | GCN_DEBUG ("HSA_AGENT_INFO_DEVICE: GPU\n"); | |
893 | break; | |
894 | case HSA_DEVICE_TYPE_DSP: | |
895 | GCN_DEBUG ("HSA_AGENT_INFO_DEVICE: DSP\n"); | |
896 | break; | |
897 | default: | |
898 | GCN_WARNING ("HSA_AGENT_INFO_DEVICE: UNKNOWN\n"); | |
899 | break; | |
900 | } | |
901 | } | |
902 | else | |
903 | GCN_WARNING ("HSA_AGENT_INFO_DEVICE: FAILED\n"); | |
904 | ||
905 | uint32_t cu_count; | |
906 | status = hsa_fns.hsa_agent_get_info_fn | |
907 | (agent, HSA_AMD_AGENT_INFO_COMPUTE_UNIT_COUNT, &cu_count); | |
908 | if (status == HSA_STATUS_SUCCESS) | |
909 | GCN_DEBUG ("HSA_AMD_AGENT_INFO_COMPUTE_UNIT_COUNT: %u\n", cu_count); | |
910 | else | |
911 | GCN_WARNING ("HSA_AMD_AGENT_INFO_COMPUTE_UNIT_COUNT: FAILED\n"); | |
912 | ||
913 | uint32_t size; | |
914 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_WAVEFRONT_SIZE, | |
915 | &size); | |
916 | if (status == HSA_STATUS_SUCCESS) | |
917 | GCN_DEBUG ("HSA_AGENT_INFO_WAVEFRONT_SIZE: %u\n", size); | |
918 | else | |
919 | GCN_WARNING ("HSA_AGENT_INFO_WAVEFRONT_SIZE: FAILED\n"); | |
920 | ||
921 | uint32_t max_dim; | |
922 | status = hsa_fns.hsa_agent_get_info_fn (agent, | |
923 | HSA_AGENT_INFO_WORKGROUP_MAX_DIM, | |
924 | &max_dim); | |
925 | if (status == HSA_STATUS_SUCCESS) | |
926 | GCN_DEBUG ("HSA_AGENT_INFO_WORKGROUP_MAX_DIM: %u\n", max_dim); | |
927 | else | |
928 | GCN_WARNING ("HSA_AGENT_INFO_WORKGROUP_MAX_DIM: FAILED\n"); | |
929 | ||
930 | uint32_t max_size; | |
931 | status = hsa_fns.hsa_agent_get_info_fn (agent, | |
932 | HSA_AGENT_INFO_WORKGROUP_MAX_SIZE, | |
933 | &max_size); | |
934 | if (status == HSA_STATUS_SUCCESS) | |
935 | GCN_DEBUG ("HSA_AGENT_INFO_WORKGROUP_MAX_SIZE: %u\n", max_size); | |
936 | else | |
937 | GCN_WARNING ("HSA_AGENT_INFO_WORKGROUP_MAX_SIZE: FAILED\n"); | |
938 | ||
939 | uint32_t grid_max_dim; | |
940 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_GRID_MAX_DIM, | |
941 | &grid_max_dim); | |
942 | if (status == HSA_STATUS_SUCCESS) | |
943 | GCN_DEBUG ("HSA_AGENT_INFO_GRID_MAX_DIM: %u\n", grid_max_dim); | |
944 | else | |
945 | GCN_WARNING ("HSA_AGENT_INFO_GRID_MAX_DIM: FAILED\n"); | |
946 | ||
947 | uint32_t grid_max_size; | |
948 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_GRID_MAX_SIZE, | |
949 | &grid_max_size); | |
950 | if (status == HSA_STATUS_SUCCESS) | |
951 | GCN_DEBUG ("HSA_AGENT_INFO_GRID_MAX_SIZE: %u\n", grid_max_size); | |
952 | else | |
953 | GCN_WARNING ("HSA_AGENT_INFO_GRID_MAX_SIZE: FAILED\n"); | |
954 | ||
955 | dump_hsa_regions (agent); | |
956 | ||
957 | return HSA_STATUS_SUCCESS; | |
958 | } | |
959 | ||
960 | /* Forward reference. */ | |
961 | ||
962 | static char *get_executable_symbol_name (hsa_executable_symbol_t symbol); | |
963 | ||
964 | /* Helper function for dump_executable_symbols. */ | |
965 | ||
966 | static hsa_status_t | |
967 | dump_executable_symbol (hsa_executable_t executable, | |
968 | hsa_executable_symbol_t symbol, | |
969 | void *data __attribute__((unused))) | |
970 | { | |
971 | char *name = get_executable_symbol_name (symbol); | |
972 | ||
973 | if (name) | |
974 | { | |
975 | GCN_DEBUG ("executable symbol: %s\n", name); | |
976 | free (name); | |
977 | } | |
978 | ||
979 | return HSA_STATUS_SUCCESS; | |
980 | } | |
981 | ||
982 | /* Dump all global symbol in an executable. */ | |
983 | ||
984 | static void | |
985 | dump_executable_symbols (hsa_executable_t executable) | |
986 | { | |
987 | hsa_status_t status; | |
988 | status | |
989 | = hsa_fns.hsa_executable_iterate_symbols_fn (executable, | |
990 | dump_executable_symbol, | |
991 | NULL); | |
992 | if (status != HSA_STATUS_SUCCESS) | |
993 | hsa_fatal ("Could not dump HSA executable symbols", status); | |
994 | } | |
995 | ||
996 | /* Dump kernel DISPATCH data structure and indent it by INDENT spaces. */ | |
997 | ||
998 | static void | |
999 | print_kernel_dispatch (struct kernel_dispatch *dispatch, unsigned indent) | |
1000 | { | |
1001 | struct kernargs *kernargs = (struct kernargs *)dispatch->kernarg_address; | |
1002 | ||
1003 | fprintf (stderr, "%*sthis: %p\n", indent, "", dispatch); | |
1004 | fprintf (stderr, "%*squeue: %p\n", indent, "", dispatch->queue); | |
1005 | fprintf (stderr, "%*skernarg_address: %p\n", indent, "", kernargs); | |
1006 | fprintf (stderr, "%*sheap address: %p\n", indent, "", | |
f6fff8a6 AS |
1007 | (void*)kernargs->abi.heap_ptr); |
1008 | fprintf (stderr, "%*sarena address: %p (%d bytes per workgroup)\n", indent, | |
1009 | "", (void*)kernargs->abi.arena_ptr, | |
1010 | kernargs->abi.arena_size_per_team); | |
1011 | fprintf (stderr, "%*sstack address: %p (%d bytes per wavefront)\n", indent, | |
1012 | "", (void*)kernargs->abi.stack_ptr, | |
1013 | kernargs->abi.stack_size_per_thread); | |
237957cc AS |
1014 | fprintf (stderr, "%*sobject: %lu\n", indent, "", dispatch->object); |
1015 | fprintf (stderr, "%*sprivate_segment_size: %u\n", indent, "", | |
1016 | dispatch->private_segment_size); | |
1017 | fprintf (stderr, "%*sgroup_segment_size: %u\n", indent, "", | |
1018 | dispatch->group_segment_size); | |
1019 | fprintf (stderr, "\n"); | |
1020 | } | |
1021 | ||
1022 | /* }}} */ | |
1023 | /* {{{ Utility functions */ | |
1024 | ||
1025 | /* Cast the thread local storage to gcn_thread. */ | |
1026 | ||
1027 | static inline struct gcn_thread * | |
1028 | gcn_thread (void) | |
1029 | { | |
1030 | return (struct gcn_thread *) GOMP_PLUGIN_acc_thread (); | |
1031 | } | |
1032 | ||
1033 | /* Initialize debug and suppress_host_fallback according to the environment. */ | |
1034 | ||
1035 | static void | |
1036 | init_environment_variables (void) | |
1037 | { | |
1038 | if (secure_getenv ("GCN_DEBUG")) | |
1039 | debug = true; | |
1040 | else | |
1041 | debug = false; | |
1042 | ||
1043 | if (secure_getenv ("GCN_SUPPRESS_HOST_FALLBACK")) | |
1044 | suppress_host_fallback = true; | |
1045 | else | |
1046 | suppress_host_fallback = false; | |
1047 | ||
1048 | hsa_runtime_lib = secure_getenv ("HSA_RUNTIME_LIB"); | |
1049 | if (hsa_runtime_lib == NULL) | |
7c1e856b | 1050 | hsa_runtime_lib = "libhsa-runtime64.so.1"; |
237957cc AS |
1051 | |
1052 | support_cpu_devices = secure_getenv ("GCN_SUPPORT_CPU_DEVICES"); | |
1053 | ||
1054 | const char *x = secure_getenv ("GCN_NUM_TEAMS"); | |
1055 | if (!x) | |
1056 | x = secure_getenv ("GCN_NUM_GANGS"); | |
1057 | if (x) | |
1058 | override_x_dim = atoi (x); | |
1059 | ||
1060 | const char *z = secure_getenv ("GCN_NUM_THREADS"); | |
1061 | if (!z) | |
1062 | z = secure_getenv ("GCN_NUM_WORKERS"); | |
1063 | if (z) | |
1064 | override_z_dim = atoi (z); | |
1065 | ||
1066 | const char *heap = secure_getenv ("GCN_HEAP_SIZE"); | |
1067 | if (heap) | |
1068 | { | |
1069 | size_t tmp = atol (heap); | |
1070 | if (tmp) | |
1071 | gcn_kernel_heap_size = tmp; | |
1072 | } | |
f6fff8a6 AS |
1073 | |
1074 | const char *arena = secure_getenv ("GCN_TEAM_ARENA_SIZE"); | |
1075 | if (arena) | |
1076 | { | |
1077 | int tmp = atoi (arena); | |
1078 | if (tmp) | |
1079 | team_arena_size = tmp;; | |
1080 | } | |
1081 | ||
1082 | const char *stack = secure_getenv ("GCN_STACK_SIZE"); | |
1083 | if (stack) | |
1084 | { | |
1085 | int tmp = atoi (stack); | |
1086 | if (tmp) | |
1087 | stack_size = tmp;; | |
1088 | } | |
237957cc AS |
1089 | } |
1090 | ||
1091 | /* Return malloc'd string with name of SYMBOL. */ | |
1092 | ||
1093 | static char * | |
1094 | get_executable_symbol_name (hsa_executable_symbol_t symbol) | |
1095 | { | |
1096 | hsa_status_t status; | |
1097 | char *res; | |
1098 | uint32_t len; | |
1099 | const hsa_executable_symbol_info_t info_name_length | |
1100 | = HSA_EXECUTABLE_SYMBOL_INFO_NAME_LENGTH; | |
1101 | ||
1102 | status = hsa_fns.hsa_executable_symbol_get_info_fn (symbol, info_name_length, | |
1103 | &len); | |
1104 | if (status != HSA_STATUS_SUCCESS) | |
1105 | { | |
1106 | hsa_error ("Could not get length of symbol name", status); | |
1107 | return NULL; | |
1108 | } | |
1109 | ||
1110 | res = GOMP_PLUGIN_malloc (len + 1); | |
1111 | ||
1112 | const hsa_executable_symbol_info_t info_name | |
1113 | = HSA_EXECUTABLE_SYMBOL_INFO_NAME; | |
1114 | ||
1115 | status = hsa_fns.hsa_executable_symbol_get_info_fn (symbol, info_name, res); | |
1116 | ||
1117 | if (status != HSA_STATUS_SUCCESS) | |
1118 | { | |
1119 | hsa_error ("Could not get symbol name", status); | |
1120 | free (res); | |
1121 | return NULL; | |
1122 | } | |
1123 | ||
1124 | res[len] = '\0'; | |
1125 | ||
1126 | return res; | |
1127 | } | |
1128 | ||
237957cc AS |
1129 | /* Get the number of GPU Compute Units. */ |
1130 | ||
1131 | static int | |
1132 | get_cu_count (struct agent_info *agent) | |
1133 | { | |
1134 | uint32_t cu_count; | |
1135 | hsa_status_t status = hsa_fns.hsa_agent_get_info_fn | |
1136 | (agent->id, HSA_AMD_AGENT_INFO_COMPUTE_UNIT_COUNT, &cu_count); | |
1137 | if (status == HSA_STATUS_SUCCESS) | |
1138 | return cu_count; | |
1139 | else | |
1140 | return 64; /* The usual number for older devices. */ | |
1141 | } | |
1142 | ||
1143 | /* Calculate the maximum grid size for OMP threads / OACC workers. | |
1144 | This depends on the kernel's resource usage levels. */ | |
1145 | ||
1146 | static int | |
1147 | limit_worker_threads (int threads) | |
1148 | { | |
1149 | /* FIXME Do something more inteligent here. | |
1150 | GCN can always run 4 threads within a Compute Unit, but | |
1151 | more than that depends on register usage. */ | |
1152 | if (threads > 16) | |
1153 | threads = 16; | |
1154 | return threads; | |
1155 | } | |
1156 | ||
81476bc4 MV |
1157 | /* This sets the maximum number of teams to twice the number of GPU Compute |
1158 | Units to avoid memory waste and corresponding memory access faults. */ | |
1159 | ||
1160 | static int | |
1161 | limit_teams (int teams, struct agent_info *agent) | |
1162 | { | |
1163 | int max_teams = 2 * get_cu_count (agent); | |
1164 | if (teams > max_teams) | |
1165 | teams = max_teams; | |
1166 | return teams; | |
1167 | } | |
1168 | ||
237957cc AS |
1169 | /* Parse the target attributes INPUT provided by the compiler and return true |
1170 | if we should run anything all. If INPUT is NULL, fill DEF with default | |
1171 | values, then store INPUT or DEF into *RESULT. | |
1172 | ||
1173 | This is used for OpenMP only. */ | |
1174 | ||
1175 | static bool | |
1176 | parse_target_attributes (void **input, | |
1177 | struct GOMP_kernel_launch_attributes *def, | |
1178 | struct GOMP_kernel_launch_attributes **result, | |
1179 | struct agent_info *agent) | |
1180 | { | |
1181 | if (!input) | |
1182 | GOMP_PLUGIN_fatal ("No target arguments provided"); | |
1183 | ||
1184 | bool grid_attrs_found = false; | |
1185 | bool gcn_dims_found = false; | |
1186 | int gcn_teams = 0; | |
1187 | int gcn_threads = 0; | |
1188 | while (*input) | |
1189 | { | |
1190 | intptr_t id = (intptr_t) *input++, val; | |
1191 | ||
1192 | if (id & GOMP_TARGET_ARG_SUBSEQUENT_PARAM) | |
1193 | val = (intptr_t) *input++; | |
1194 | else | |
1195 | val = id >> GOMP_TARGET_ARG_VALUE_SHIFT; | |
1196 | ||
1197 | val = (val > INT_MAX) ? INT_MAX : val; | |
1198 | ||
1199 | if ((id & GOMP_TARGET_ARG_DEVICE_MASK) == GOMP_DEVICE_GCN | |
1200 | && ((id & GOMP_TARGET_ARG_ID_MASK) | |
1201 | == GOMP_TARGET_ARG_HSA_KERNEL_ATTRIBUTES)) | |
1202 | { | |
1203 | grid_attrs_found = true; | |
1204 | break; | |
1205 | } | |
14e5e746 AS |
1206 | else if ((id & GOMP_TARGET_ARG_DEVICE_MASK) |
1207 | == GOMP_TARGET_ARG_DEVICE_ALL) | |
237957cc AS |
1208 | { |
1209 | gcn_dims_found = true; | |
1210 | switch (id & GOMP_TARGET_ARG_ID_MASK) | |
1211 | { | |
1212 | case GOMP_TARGET_ARG_NUM_TEAMS: | |
81476bc4 | 1213 | gcn_teams = limit_teams (val, agent); |
237957cc AS |
1214 | break; |
1215 | case GOMP_TARGET_ARG_THREAD_LIMIT: | |
1216 | gcn_threads = limit_worker_threads (val); | |
1217 | break; | |
1218 | default: | |
1219 | ; | |
1220 | } | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | if (gcn_dims_found) | |
1225 | { | |
a78b1ab1 KCY |
1226 | bool gfx900_workaround_p = false; |
1227 | ||
7d593fd6 FH |
1228 | if (agent->device_isa == EF_AMDGPU_MACH_AMDGCN_GFX900 |
1229 | && gcn_threads == 0 && override_z_dim == 0) | |
237957cc | 1230 | { |
a78b1ab1 | 1231 | gfx900_workaround_p = true; |
237957cc | 1232 | GCN_WARNING ("VEGA BUG WORKAROUND: reducing default number of " |
a78b1ab1 | 1233 | "threads to at most 4 per team.\n"); |
237957cc AS |
1234 | GCN_WARNING (" - If this is not a Vega 10 device, please use " |
1235 | "GCN_NUM_THREADS=16\n"); | |
1236 | } | |
1237 | ||
a78b1ab1 KCY |
1238 | /* Ideally, when a dimension isn't explicitly specified, we should |
1239 | tune it to run 40 (or 32?) threads per CU with no threads getting queued. | |
1240 | In practice, we tune for peak performance on BabelStream, which | |
1241 | for OpenACC is currently 32 threads per CU. */ | |
237957cc | 1242 | def->ndim = 3; |
a78b1ab1 KCY |
1243 | if (gcn_teams <= 0 && gcn_threads <= 0) |
1244 | { | |
1245 | /* Set up a reasonable number of teams and threads. */ | |
1246 | gcn_threads = gfx900_workaround_p ? 4 : 16; // 8; | |
1247 | def->gdims[0] = get_cu_count (agent); // * (40 / gcn_threads); | |
1248 | def->gdims[2] = gcn_threads; | |
1249 | } | |
1250 | else if (gcn_teams <= 0 && gcn_threads > 0) | |
1251 | { | |
1252 | /* Auto-scale the number of teams with the number of threads. */ | |
1253 | def->gdims[0] = get_cu_count (agent); // * (40 / gcn_threads); | |
1254 | def->gdims[2] = gcn_threads; | |
1255 | } | |
1256 | else if (gcn_teams > 0 && gcn_threads <= 0) | |
1257 | { | |
1258 | int max_threads = gfx900_workaround_p ? 4 : 16; | |
1259 | ||
1260 | /* Auto-scale the number of threads with the number of teams. */ | |
1261 | def->gdims[0] = gcn_teams; | |
1262 | def->gdims[2] = 16; // get_cu_count (agent) * 40 / gcn_teams; | |
1263 | if (def->gdims[2] == 0) | |
1264 | def->gdims[2] = 1; | |
1265 | else if (def->gdims[2] > max_threads) | |
1266 | def->gdims[2] = max_threads; | |
1267 | } | |
1268 | else | |
1269 | { | |
1270 | def->gdims[0] = gcn_teams; | |
1271 | def->gdims[2] = gcn_threads; | |
1272 | } | |
1273 | def->gdims[1] = 64; /* Each thread is 64 work items wide. */ | |
1274 | def->wdims[0] = 1; /* Single team per work-group. */ | |
237957cc AS |
1275 | def->wdims[1] = 64; |
1276 | def->wdims[2] = 16; | |
1277 | *result = def; | |
1278 | return true; | |
1279 | } | |
1280 | else if (!grid_attrs_found) | |
1281 | { | |
1282 | def->ndim = 1; | |
1283 | def->gdims[0] = 1; | |
1284 | def->gdims[1] = 1; | |
1285 | def->gdims[2] = 1; | |
1286 | def->wdims[0] = 1; | |
1287 | def->wdims[1] = 1; | |
1288 | def->wdims[2] = 1; | |
1289 | *result = def; | |
1290 | GCN_WARNING ("GOMP_OFFLOAD_run called with no launch attributes\n"); | |
1291 | return true; | |
1292 | } | |
1293 | ||
1294 | struct GOMP_kernel_launch_attributes *kla; | |
1295 | kla = (struct GOMP_kernel_launch_attributes *) *input; | |
1296 | *result = kla; | |
1297 | if (kla->ndim == 0 || kla->ndim > 3) | |
1298 | GOMP_PLUGIN_fatal ("Invalid number of dimensions (%u)", kla->ndim); | |
1299 | ||
1300 | GCN_DEBUG ("GOMP_OFFLOAD_run called with %u dimensions:\n", kla->ndim); | |
1301 | unsigned i; | |
1302 | for (i = 0; i < kla->ndim; i++) | |
1303 | { | |
1304 | GCN_DEBUG (" Dimension %u: grid size %u and group size %u\n", i, | |
1305 | kla->gdims[i], kla->wdims[i]); | |
1306 | if (kla->gdims[i] == 0) | |
1307 | return false; | |
1308 | } | |
1309 | return true; | |
1310 | } | |
1311 | ||
1312 | /* Return the group size given the requested GROUP size, GRID size and number | |
1313 | of grid dimensions NDIM. */ | |
1314 | ||
1315 | static uint32_t | |
1316 | get_group_size (uint32_t ndim, uint32_t grid, uint32_t group) | |
1317 | { | |
1318 | if (group == 0) | |
1319 | { | |
1320 | /* TODO: Provide a default via environment or device characteristics. */ | |
1321 | if (ndim == 1) | |
1322 | group = 64; | |
1323 | else if (ndim == 2) | |
1324 | group = 8; | |
1325 | else | |
1326 | group = 4; | |
1327 | } | |
1328 | ||
1329 | if (group > grid) | |
1330 | group = grid; | |
1331 | return group; | |
1332 | } | |
1333 | ||
1334 | /* Atomically store pair of uint16_t values (HEADER and REST) to a PACKET. */ | |
1335 | ||
1336 | static void | |
1337 | packet_store_release (uint32_t* packet, uint16_t header, uint16_t rest) | |
1338 | { | |
1339 | __atomic_store_n (packet, header | (rest << 16), __ATOMIC_RELEASE); | |
1340 | } | |
1341 | ||
1342 | /* A never-called callback for the HSA command queues. These signal events | |
1343 | that we don't use, so we trigger an error. | |
1344 | ||
1345 | This "queue" is not to be confused with the async queues, below. */ | |
1346 | ||
1347 | static void | |
1348 | hsa_queue_callback (hsa_status_t status, | |
1349 | hsa_queue_t *queue __attribute__ ((unused)), | |
1350 | void *data __attribute__ ((unused))) | |
1351 | { | |
1352 | hsa_fatal ("Asynchronous queue error", status); | |
1353 | } | |
1354 | ||
1355 | /* }}} */ | |
1356 | /* {{{ HSA initialization */ | |
1357 | ||
1358 | /* Populate hsa_fns with the function addresses from libhsa-runtime64.so. */ | |
1359 | ||
1360 | static bool | |
1361 | init_hsa_runtime_functions (void) | |
1362 | { | |
1363 | #define DLSYM_FN(function) \ | |
1364 | hsa_fns.function##_fn = dlsym (handle, #function); \ | |
1365 | if (hsa_fns.function##_fn == NULL) \ | |
1366 | return false; | |
1367 | void *handle = dlopen (hsa_runtime_lib, RTLD_LAZY); | |
1368 | if (handle == NULL) | |
1369 | return false; | |
1370 | ||
1371 | DLSYM_FN (hsa_status_string) | |
1372 | DLSYM_FN (hsa_system_get_info) | |
1373 | DLSYM_FN (hsa_agent_get_info) | |
1374 | DLSYM_FN (hsa_init) | |
1375 | DLSYM_FN (hsa_iterate_agents) | |
1376 | DLSYM_FN (hsa_region_get_info) | |
1377 | DLSYM_FN (hsa_queue_create) | |
1378 | DLSYM_FN (hsa_agent_iterate_regions) | |
1379 | DLSYM_FN (hsa_executable_destroy) | |
1380 | DLSYM_FN (hsa_executable_create) | |
1381 | DLSYM_FN (hsa_executable_global_variable_define) | |
1382 | DLSYM_FN (hsa_executable_load_code_object) | |
1383 | DLSYM_FN (hsa_executable_freeze) | |
1384 | DLSYM_FN (hsa_signal_create) | |
1385 | DLSYM_FN (hsa_memory_allocate) | |
1386 | DLSYM_FN (hsa_memory_assign_agent) | |
1387 | DLSYM_FN (hsa_memory_copy) | |
1388 | DLSYM_FN (hsa_memory_free) | |
1389 | DLSYM_FN (hsa_signal_destroy) | |
1390 | DLSYM_FN (hsa_executable_get_symbol) | |
1391 | DLSYM_FN (hsa_executable_symbol_get_info) | |
1392 | DLSYM_FN (hsa_executable_iterate_symbols) | |
1393 | DLSYM_FN (hsa_queue_add_write_index_release) | |
1394 | DLSYM_FN (hsa_queue_load_read_index_acquire) | |
1395 | DLSYM_FN (hsa_signal_wait_acquire) | |
1396 | DLSYM_FN (hsa_signal_store_relaxed) | |
1397 | DLSYM_FN (hsa_signal_store_release) | |
1398 | DLSYM_FN (hsa_signal_load_acquire) | |
1399 | DLSYM_FN (hsa_queue_destroy) | |
1400 | DLSYM_FN (hsa_code_object_deserialize) | |
1401 | return true; | |
1402 | #undef DLSYM_FN | |
1403 | } | |
1404 | ||
1405 | /* Return true if the agent is a GPU and can accept of concurrent submissions | |
1406 | from different threads. */ | |
1407 | ||
1408 | static bool | |
1409 | suitable_hsa_agent_p (hsa_agent_t agent) | |
1410 | { | |
1411 | hsa_device_type_t device_type; | |
1412 | hsa_status_t status | |
1413 | = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_DEVICE, | |
1414 | &device_type); | |
1415 | if (status != HSA_STATUS_SUCCESS) | |
1416 | return false; | |
1417 | ||
1418 | switch (device_type) | |
1419 | { | |
1420 | case HSA_DEVICE_TYPE_GPU: | |
1421 | break; | |
1422 | case HSA_DEVICE_TYPE_CPU: | |
1423 | if (!support_cpu_devices) | |
1424 | return false; | |
1425 | break; | |
1426 | default: | |
1427 | return false; | |
1428 | } | |
1429 | ||
1430 | uint32_t features = 0; | |
1431 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_FEATURE, | |
1432 | &features); | |
1433 | if (status != HSA_STATUS_SUCCESS | |
1434 | || !(features & HSA_AGENT_FEATURE_KERNEL_DISPATCH)) | |
1435 | return false; | |
1436 | hsa_queue_type_t queue_type; | |
1437 | status = hsa_fns.hsa_agent_get_info_fn (agent, HSA_AGENT_INFO_QUEUE_TYPE, | |
1438 | &queue_type); | |
1439 | if (status != HSA_STATUS_SUCCESS | |
1440 | || (queue_type != HSA_QUEUE_TYPE_MULTI)) | |
1441 | return false; | |
1442 | ||
1443 | return true; | |
1444 | } | |
1445 | ||
1446 | /* Callback of hsa_iterate_agents; if AGENT is a GPU device, increment | |
1447 | agent_count in hsa_context. */ | |
1448 | ||
1449 | static hsa_status_t | |
1450 | count_gpu_agents (hsa_agent_t agent, void *data __attribute__ ((unused))) | |
1451 | { | |
1452 | if (suitable_hsa_agent_p (agent)) | |
1453 | hsa_context.agent_count++; | |
1454 | return HSA_STATUS_SUCCESS; | |
1455 | } | |
1456 | ||
1457 | /* Callback of hsa_iterate_agents; if AGENT is a GPU device, assign the agent | |
1458 | id to the describing structure in the hsa context. The index of the | |
1459 | structure is pointed to by DATA, increment it afterwards. */ | |
1460 | ||
1461 | static hsa_status_t | |
1462 | assign_agent_ids (hsa_agent_t agent, void *data) | |
1463 | { | |
1464 | if (suitable_hsa_agent_p (agent)) | |
1465 | { | |
1466 | int *agent_index = (int *) data; | |
1467 | hsa_context.agents[*agent_index].id = agent; | |
1468 | ++*agent_index; | |
1469 | } | |
1470 | return HSA_STATUS_SUCCESS; | |
1471 | } | |
1472 | ||
1473 | /* Initialize hsa_context if it has not already been done. | |
1474 | Return TRUE on success. */ | |
1475 | ||
1476 | static bool | |
1477 | init_hsa_context (void) | |
1478 | { | |
1479 | hsa_status_t status; | |
1480 | int agent_index = 0; | |
1481 | ||
1482 | if (hsa_context.initialized) | |
1483 | return true; | |
1484 | init_environment_variables (); | |
1485 | if (!init_hsa_runtime_functions ()) | |
1486 | { | |
1487 | GCN_WARNING ("Run-time could not be dynamically opened\n"); | |
1488 | if (suppress_host_fallback) | |
1489 | GOMP_PLUGIN_fatal ("GCN host fallback has been suppressed"); | |
1490 | return false; | |
1491 | } | |
1492 | status = hsa_fns.hsa_init_fn (); | |
1493 | if (status != HSA_STATUS_SUCCESS) | |
1494 | return hsa_error ("Run-time could not be initialized", status); | |
1495 | GCN_DEBUG ("HSA run-time initialized for GCN\n"); | |
1496 | ||
1497 | if (debug) | |
1498 | dump_hsa_system_info (); | |
1499 | ||
1500 | status = hsa_fns.hsa_iterate_agents_fn (count_gpu_agents, NULL); | |
1501 | if (status != HSA_STATUS_SUCCESS) | |
1502 | return hsa_error ("GCN GPU devices could not be enumerated", status); | |
1503 | GCN_DEBUG ("There are %i GCN GPU devices.\n", hsa_context.agent_count); | |
1504 | ||
1505 | hsa_context.agents | |
1506 | = GOMP_PLUGIN_malloc_cleared (hsa_context.agent_count | |
1507 | * sizeof (struct agent_info)); | |
1508 | status = hsa_fns.hsa_iterate_agents_fn (assign_agent_ids, &agent_index); | |
966de09b AS |
1509 | if (status != HSA_STATUS_SUCCESS) |
1510 | return hsa_error ("Scanning compute agents failed", status); | |
237957cc AS |
1511 | if (agent_index != hsa_context.agent_count) |
1512 | { | |
1513 | GOMP_PLUGIN_error ("Failed to assign IDs to all GCN agents"); | |
1514 | return false; | |
1515 | } | |
1516 | ||
1517 | if (debug) | |
1518 | { | |
1519 | status = hsa_fns.hsa_iterate_agents_fn (dump_hsa_agent_info, NULL); | |
1520 | if (status != HSA_STATUS_SUCCESS) | |
1521 | GOMP_PLUGIN_error ("Failed to list all HSA runtime agents"); | |
1522 | } | |
1523 | ||
2e5ea579 FH |
1524 | uint16_t minor, major; |
1525 | status = hsa_fns.hsa_system_get_info_fn (HSA_SYSTEM_INFO_VERSION_MINOR, | |
1526 | &minor); | |
1527 | if (status != HSA_STATUS_SUCCESS) | |
1528 | GOMP_PLUGIN_error ("Failed to obtain HSA runtime minor version"); | |
1529 | status = hsa_fns.hsa_system_get_info_fn (HSA_SYSTEM_INFO_VERSION_MAJOR, | |
1530 | &major); | |
1531 | if (status != HSA_STATUS_SUCCESS) | |
1532 | GOMP_PLUGIN_error ("Failed to obtain HSA runtime major version"); | |
1533 | ||
1534 | size_t len = sizeof hsa_context.driver_version_s; | |
1535 | int printed = snprintf (hsa_context.driver_version_s, len, | |
1536 | "HSA Runtime %hu.%hu", (unsigned short int)major, | |
1537 | (unsigned short int)minor); | |
1538 | if (printed >= len) | |
1539 | GCN_WARNING ("HSA runtime version string was truncated." | |
1540 | "Version %hu.%hu is too long.", (unsigned short int)major, | |
1541 | (unsigned short int)minor); | |
1542 | ||
237957cc AS |
1543 | hsa_context.initialized = true; |
1544 | return true; | |
1545 | } | |
1546 | ||
1547 | /* Verify that hsa_context has already been initialized and return the | |
1548 | agent_info structure describing device number N. Return NULL on error. */ | |
1549 | ||
1550 | static struct agent_info * | |
1551 | get_agent_info (int n) | |
1552 | { | |
1553 | if (!hsa_context.initialized) | |
1554 | { | |
1555 | GOMP_PLUGIN_error ("Attempt to use uninitialized GCN context."); | |
1556 | return NULL; | |
1557 | } | |
1558 | if (n >= hsa_context.agent_count) | |
1559 | { | |
1560 | GOMP_PLUGIN_error ("Request to operate on non-existent GCN device %i", n); | |
1561 | return NULL; | |
1562 | } | |
1563 | if (!hsa_context.agents[n].initialized) | |
1564 | { | |
1565 | GOMP_PLUGIN_error ("Attempt to use an uninitialized GCN agent."); | |
1566 | return NULL; | |
1567 | } | |
1568 | return &hsa_context.agents[n]; | |
1569 | } | |
1570 | ||
1571 | /* Callback of hsa_agent_iterate_regions, via get_*_memory_region functions. | |
1572 | ||
1573 | Selects (breaks at) a suitable region of type KIND. */ | |
1574 | ||
1575 | static hsa_status_t | |
1576 | get_memory_region (hsa_region_t region, hsa_region_t *retval, | |
1577 | hsa_region_global_flag_t kind) | |
1578 | { | |
1579 | hsa_status_t status; | |
1580 | hsa_region_segment_t segment; | |
1581 | ||
1582 | status = hsa_fns.hsa_region_get_info_fn (region, HSA_REGION_INFO_SEGMENT, | |
1583 | &segment); | |
1584 | if (status != HSA_STATUS_SUCCESS) | |
1585 | return status; | |
1586 | if (segment != HSA_REGION_SEGMENT_GLOBAL) | |
1587 | return HSA_STATUS_SUCCESS; | |
1588 | ||
1589 | uint32_t flags; | |
1590 | status = hsa_fns.hsa_region_get_info_fn (region, HSA_REGION_INFO_GLOBAL_FLAGS, | |
1591 | &flags); | |
1592 | if (status != HSA_STATUS_SUCCESS) | |
1593 | return status; | |
1594 | if (flags & kind) | |
1595 | { | |
1596 | *retval = region; | |
1597 | return HSA_STATUS_INFO_BREAK; | |
1598 | } | |
1599 | return HSA_STATUS_SUCCESS; | |
1600 | } | |
1601 | ||
1602 | /* Callback of hsa_agent_iterate_regions. | |
1603 | ||
1604 | Selects a kernargs memory region. */ | |
1605 | ||
1606 | static hsa_status_t | |
1607 | get_kernarg_memory_region (hsa_region_t region, void *data) | |
1608 | { | |
1609 | return get_memory_region (region, (hsa_region_t *)data, | |
1610 | HSA_REGION_GLOBAL_FLAG_KERNARG); | |
1611 | } | |
1612 | ||
1613 | /* Callback of hsa_agent_iterate_regions. | |
1614 | ||
1615 | Selects a coarse-grained memory region suitable for the heap and | |
1616 | offload data. */ | |
1617 | ||
1618 | static hsa_status_t | |
1619 | get_data_memory_region (hsa_region_t region, void *data) | |
1620 | { | |
1621 | return get_memory_region (region, (hsa_region_t *)data, | |
1622 | HSA_REGION_GLOBAL_FLAG_COARSE_GRAINED); | |
1623 | } | |
1624 | ||
7d593fd6 FH |
1625 | static int |
1626 | elf_gcn_isa_field (Elf64_Ehdr *image) | |
1627 | { | |
1628 | return image->e_flags & EF_AMDGPU_MACH_MASK; | |
1629 | } | |
1630 | ||
7d593fd6 FH |
1631 | const static char *gcn_gfx803_s = "gfx803"; |
1632 | const static char *gcn_gfx900_s = "gfx900"; | |
1633 | const static char *gcn_gfx906_s = "gfx906"; | |
3535402e | 1634 | const static char *gcn_gfx908_s = "gfx908"; |
cde52d3a | 1635 | const static char *gcn_gfx90a_s = "gfx90a"; |
7d593fd6 FH |
1636 | const static int gcn_isa_name_len = 6; |
1637 | ||
1638 | /* Returns the name that the HSA runtime uses for the ISA or NULL if we do not | |
1639 | support the ISA. */ | |
1640 | ||
1641 | static const char* | |
1642 | isa_hsa_name (int isa) { | |
1643 | switch(isa) | |
1644 | { | |
7d593fd6 FH |
1645 | case EF_AMDGPU_MACH_AMDGCN_GFX803: |
1646 | return gcn_gfx803_s; | |
1647 | case EF_AMDGPU_MACH_AMDGCN_GFX900: | |
1648 | return gcn_gfx900_s; | |
1649 | case EF_AMDGPU_MACH_AMDGCN_GFX906: | |
1650 | return gcn_gfx906_s; | |
3535402e AS |
1651 | case EF_AMDGPU_MACH_AMDGCN_GFX908: |
1652 | return gcn_gfx908_s; | |
cde52d3a AS |
1653 | case EF_AMDGPU_MACH_AMDGCN_GFX90a: |
1654 | return gcn_gfx90a_s; | |
7d593fd6 FH |
1655 | } |
1656 | return NULL; | |
1657 | } | |
1658 | ||
1659 | /* Returns the user-facing name that GCC uses to identify the architecture (e.g. | |
1660 | with -march) or NULL if we do not support the ISA. | |
1661 | Keep in sync with /gcc/config/gcn/gcn.{c,opt}. */ | |
1662 | ||
1663 | static const char* | |
1664 | isa_gcc_name (int isa) { | |
1665 | switch(isa) | |
1666 | { | |
7d593fd6 FH |
1667 | case EF_AMDGPU_MACH_AMDGCN_GFX803: |
1668 | return "fiji"; | |
1669 | default: | |
1670 | return isa_hsa_name (isa); | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | /* Returns the code which is used in the GCN object code to identify the ISA with | |
1675 | the given name (as used by the HSA runtime). */ | |
1676 | ||
1677 | static gcn_isa | |
1678 | isa_code(const char *isa) { | |
7d593fd6 FH |
1679 | if (!strncmp (isa, gcn_gfx803_s, gcn_isa_name_len)) |
1680 | return EF_AMDGPU_MACH_AMDGCN_GFX803; | |
1681 | ||
1682 | if (!strncmp (isa, gcn_gfx900_s, gcn_isa_name_len)) | |
1683 | return EF_AMDGPU_MACH_AMDGCN_GFX900; | |
1684 | ||
1685 | if (!strncmp (isa, gcn_gfx906_s, gcn_isa_name_len)) | |
1686 | return EF_AMDGPU_MACH_AMDGCN_GFX906; | |
1687 | ||
3535402e AS |
1688 | if (!strncmp (isa, gcn_gfx908_s, gcn_isa_name_len)) |
1689 | return EF_AMDGPU_MACH_AMDGCN_GFX908; | |
1690 | ||
cde52d3a AS |
1691 | if (!strncmp (isa, gcn_gfx90a_s, gcn_isa_name_len)) |
1692 | return EF_AMDGPU_MACH_AMDGCN_GFX90a; | |
1693 | ||
7d593fd6 FH |
1694 | return -1; |
1695 | } | |
1696 | ||
237957cc AS |
1697 | /* }}} */ |
1698 | /* {{{ Run */ | |
1699 | ||
f6fff8a6 | 1700 | /* Create or reuse a team arena and stack space. |
237957cc AS |
1701 | |
1702 | Team arenas are used by OpenMP to avoid calling malloc multiple times | |
1703 | while setting up each team. This is purely a performance optimization. | |
1704 | ||
f6fff8a6 AS |
1705 | The stack space is used by all kernels. We must allocate it in such a |
1706 | way that the reverse offload implmentation can access the data. | |
237957cc | 1707 | |
f6fff8a6 AS |
1708 | Allocating this memory costs performance, so this function will reuse an |
1709 | existing allocation if a large enough one is idle. | |
1710 | The memory lock is released, but not deallocated, when the kernel exits. */ | |
1711 | ||
1712 | static void | |
1713 | configure_ephemeral_memories (struct kernel_info *kernel, | |
1714 | struct kernargs_abi *kernargs, int num_teams, | |
1715 | int num_threads) | |
237957cc | 1716 | { |
f6fff8a6 AS |
1717 | struct agent_info *agent = kernel->agent; |
1718 | struct ephemeral_memories_list **next_ptr = &agent->ephemeral_memories_list; | |
1719 | struct ephemeral_memories_list *item; | |
1720 | ||
1721 | int actual_arena_size = (kernel->kind == KIND_OPENMP | |
1722 | ? team_arena_size : 0); | |
1723 | int actual_arena_total_size = actual_arena_size * num_teams; | |
1724 | size_t size = (actual_arena_total_size | |
1725 | + num_teams * num_threads * stack_size); | |
237957cc AS |
1726 | |
1727 | for (item = *next_ptr; item; next_ptr = &item->next, item = item->next) | |
1728 | { | |
f6fff8a6 | 1729 | if (item->size < size) |
237957cc AS |
1730 | continue; |
1731 | ||
f6fff8a6 AS |
1732 | if (pthread_mutex_trylock (&item->in_use) == 0) |
1733 | break; | |
237957cc AS |
1734 | } |
1735 | ||
f6fff8a6 | 1736 | if (!item) |
237957cc | 1737 | { |
f6fff8a6 AS |
1738 | GCN_DEBUG ("Creating a new %sstack for %d teams with %d threads" |
1739 | " (%zd bytes)\n", (actual_arena_size ? "arena and " : ""), | |
1740 | num_teams, num_threads, size); | |
237957cc | 1741 | |
f6fff8a6 AS |
1742 | if (pthread_mutex_lock (&agent->ephemeral_memories_write_lock)) |
1743 | { | |
1744 | GOMP_PLUGIN_error ("Could not lock a GCN agent program mutex"); | |
1745 | return; | |
1746 | } | |
1747 | item = malloc (sizeof (*item)); | |
1748 | item->size = size; | |
1749 | item->next = NULL; | |
1750 | *next_ptr = item; | |
237957cc | 1751 | |
f6fff8a6 AS |
1752 | if (pthread_mutex_init (&item->in_use, NULL)) |
1753 | { | |
1754 | GOMP_PLUGIN_error ("Failed to initialize a GCN memory write mutex"); | |
1755 | return; | |
1756 | } | |
1757 | if (pthread_mutex_lock (&item->in_use)) | |
1758 | { | |
1759 | GOMP_PLUGIN_error ("Could not lock a GCN agent program mutex"); | |
1760 | return; | |
1761 | } | |
1762 | if (pthread_mutex_unlock (&agent->ephemeral_memories_write_lock)) | |
1763 | { | |
1764 | GOMP_PLUGIN_error ("Could not unlock a GCN agent program mutex"); | |
1765 | return; | |
1766 | } | |
1767 | ||
1768 | hsa_status_t status; | |
1769 | status = hsa_fns.hsa_memory_allocate_fn (agent->data_region, size, | |
1770 | &item->address); | |
1771 | if (status != HSA_STATUS_SUCCESS) | |
1772 | hsa_fatal ("Could not allocate memory for GCN kernel arena", status); | |
1773 | status = hsa_fns.hsa_memory_assign_agent_fn (item->address, agent->id, | |
1774 | HSA_ACCESS_PERMISSION_RW); | |
1775 | if (status != HSA_STATUS_SUCCESS) | |
1776 | hsa_fatal ("Could not assign arena & stack memory to device", status); | |
1777 | } | |
237957cc | 1778 | |
f6fff8a6 AS |
1779 | kernargs->arena_ptr = (actual_arena_total_size |
1780 | ? (uint64_t)item->address | |
1781 | : 0); | |
1782 | kernargs->stack_ptr = (uint64_t)item->address + actual_arena_total_size; | |
1783 | kernargs->arena_size_per_team = actual_arena_size; | |
1784 | kernargs->stack_size_per_thread = stack_size; | |
237957cc AS |
1785 | } |
1786 | ||
f6fff8a6 | 1787 | /* Mark an ephemeral memory space available for reuse. */ |
237957cc AS |
1788 | |
1789 | static void | |
f6fff8a6 | 1790 | release_ephemeral_memories (struct agent_info* agent, void *address) |
237957cc | 1791 | { |
f6fff8a6 | 1792 | struct ephemeral_memories_list *item; |
237957cc | 1793 | |
f6fff8a6 | 1794 | for (item = agent->ephemeral_memories_list; item; item = item->next) |
237957cc | 1795 | { |
f6fff8a6 | 1796 | if (item->address == address) |
237957cc AS |
1797 | { |
1798 | if (pthread_mutex_unlock (&item->in_use)) | |
1799 | GOMP_PLUGIN_error ("Could not unlock a GCN agent program mutex"); | |
1800 | return; | |
1801 | } | |
1802 | } | |
1803 | GOMP_PLUGIN_error ("Could not find a GCN arena to release."); | |
1804 | } | |
1805 | ||
1806 | /* Clean up all the allocated team arenas. */ | |
1807 | ||
1808 | static bool | |
f6fff8a6 | 1809 | destroy_ephemeral_memories (struct agent_info *agent) |
237957cc | 1810 | { |
f6fff8a6 | 1811 | struct ephemeral_memories_list *item, *next; |
237957cc | 1812 | |
f6fff8a6 | 1813 | for (item = agent->ephemeral_memories_list; item; item = next) |
237957cc AS |
1814 | { |
1815 | next = item->next; | |
f6fff8a6 | 1816 | hsa_fns.hsa_memory_free_fn (item->address); |
237957cc AS |
1817 | if (pthread_mutex_destroy (&item->in_use)) |
1818 | { | |
f6fff8a6 | 1819 | GOMP_PLUGIN_error ("Failed to destroy a GCN memory mutex"); |
237957cc AS |
1820 | return false; |
1821 | } | |
1822 | free (item); | |
1823 | } | |
f6fff8a6 | 1824 | agent->ephemeral_memories_list = NULL; |
237957cc AS |
1825 | |
1826 | return true; | |
1827 | } | |
1828 | ||
1829 | /* Allocate memory on a specified device. */ | |
1830 | ||
1831 | static void * | |
1832 | alloc_by_agent (struct agent_info *agent, size_t size) | |
1833 | { | |
1834 | GCN_DEBUG ("Allocating %zu bytes on device %d\n", size, agent->device_id); | |
1835 | ||
1836 | /* Zero-size allocations are invalid, so in order to return a valid pointer | |
1837 | we need to pass a valid size. One source of zero-size allocations is | |
1838 | kernargs for kernels that have no inputs or outputs (the kernel may | |
1839 | only use console output, for example). */ | |
1840 | if (size == 0) | |
1841 | size = 4; | |
1842 | ||
1843 | void *ptr; | |
1844 | hsa_status_t status = hsa_fns.hsa_memory_allocate_fn (agent->data_region, | |
1845 | size, &ptr); | |
1846 | if (status != HSA_STATUS_SUCCESS) | |
1847 | { | |
1848 | hsa_error ("Could not allocate device memory", status); | |
1849 | return NULL; | |
1850 | } | |
1851 | ||
1852 | status = hsa_fns.hsa_memory_assign_agent_fn (ptr, agent->id, | |
1853 | HSA_ACCESS_PERMISSION_RW); | |
1854 | if (status != HSA_STATUS_SUCCESS) | |
1855 | { | |
1856 | hsa_error ("Could not assign data memory to device", status); | |
1857 | return NULL; | |
1858 | } | |
1859 | ||
1860 | struct goacc_thread *thr = GOMP_PLUGIN_goacc_thread (); | |
1861 | bool profiling_dispatch_p | |
1862 | = __builtin_expect (thr != NULL && thr->prof_info != NULL, false); | |
1863 | if (profiling_dispatch_p) | |
1864 | { | |
1865 | acc_prof_info *prof_info = thr->prof_info; | |
1866 | acc_event_info data_event_info; | |
1867 | acc_api_info *api_info = thr->api_info; | |
1868 | ||
1869 | prof_info->event_type = acc_ev_alloc; | |
1870 | ||
1871 | data_event_info.data_event.event_type = prof_info->event_type; | |
1872 | data_event_info.data_event.valid_bytes | |
1873 | = _ACC_DATA_EVENT_INFO_VALID_BYTES; | |
1874 | data_event_info.data_event.parent_construct | |
1875 | = acc_construct_parallel; | |
1876 | data_event_info.data_event.implicit = 1; | |
1877 | data_event_info.data_event.tool_info = NULL; | |
1878 | data_event_info.data_event.var_name = NULL; | |
1879 | data_event_info.data_event.bytes = size; | |
1880 | data_event_info.data_event.host_ptr = NULL; | |
1881 | data_event_info.data_event.device_ptr = (void *) ptr; | |
1882 | ||
1883 | api_info->device_api = acc_device_api_other; | |
1884 | ||
1885 | GOMP_PLUGIN_goacc_profiling_dispatch (prof_info, &data_event_info, | |
1886 | api_info); | |
1887 | } | |
1888 | ||
1889 | return ptr; | |
1890 | } | |
1891 | ||
1892 | /* Create kernel dispatch data structure for given KERNEL, along with | |
1893 | the necessary device signals and memory allocations. */ | |
1894 | ||
1895 | static struct kernel_dispatch * | |
f6fff8a6 AS |
1896 | create_kernel_dispatch (struct kernel_info *kernel, int num_teams, |
1897 | int num_threads) | |
237957cc AS |
1898 | { |
1899 | struct agent_info *agent = kernel->agent; | |
1900 | struct kernel_dispatch *shadow | |
1901 | = GOMP_PLUGIN_malloc_cleared (sizeof (struct kernel_dispatch)); | |
1902 | ||
1903 | shadow->agent = kernel->agent; | |
1904 | shadow->object = kernel->object; | |
1905 | ||
1906 | hsa_signal_t sync_signal; | |
1907 | hsa_status_t status = hsa_fns.hsa_signal_create_fn (1, 0, NULL, &sync_signal); | |
1908 | if (status != HSA_STATUS_SUCCESS) | |
1909 | hsa_fatal ("Error creating the GCN sync signal", status); | |
1910 | ||
1911 | shadow->signal = sync_signal.handle; | |
1912 | shadow->private_segment_size = kernel->private_segment_size; | |
1913 | shadow->group_segment_size = kernel->group_segment_size; | |
1914 | ||
1915 | /* We expect kernels to request a single pointer, explicitly, and the | |
1916 | rest of struct kernargs, implicitly. If they request anything else | |
1917 | then something is wrong. */ | |
1918 | if (kernel->kernarg_segment_size > 8) | |
1919 | { | |
1920 | GOMP_PLUGIN_fatal ("Unexpectedly large kernargs segment requested"); | |
1921 | return NULL; | |
1922 | } | |
1923 | ||
1924 | status = hsa_fns.hsa_memory_allocate_fn (agent->kernarg_region, | |
1925 | sizeof (struct kernargs), | |
1926 | &shadow->kernarg_address); | |
1927 | if (status != HSA_STATUS_SUCCESS) | |
1928 | hsa_fatal ("Could not allocate memory for GCN kernel arguments", status); | |
1929 | struct kernargs *kernargs = shadow->kernarg_address; | |
1930 | ||
1931 | /* Zero-initialize the output_data (minimum needed). */ | |
f6fff8a6 | 1932 | kernargs->abi.out_ptr = (int64_t)&kernargs->output_data; |
237957cc AS |
1933 | kernargs->output_data.next_output = 0; |
1934 | for (unsigned i = 0; | |
1935 | i < (sizeof (kernargs->output_data.queue) | |
1936 | / sizeof (kernargs->output_data.queue[0])); | |
1937 | i++) | |
1938 | kernargs->output_data.queue[i].written = 0; | |
1939 | kernargs->output_data.consumed = 0; | |
1940 | ||
1941 | /* Pass in the heap location. */ | |
f6fff8a6 | 1942 | kernargs->abi.heap_ptr = (int64_t)kernel->module->heap; |
237957cc | 1943 | |
f6fff8a6 AS |
1944 | /* Create the ephemeral memory spaces. */ |
1945 | configure_ephemeral_memories (kernel, &kernargs->abi, num_teams, num_threads); | |
237957cc AS |
1946 | |
1947 | /* Ensure we can recognize unset return values. */ | |
1948 | kernargs->output_data.return_value = 0xcafe0000; | |
1949 | ||
1950 | return shadow; | |
1951 | } | |
1952 | ||
8c05d8cd | 1953 | static void |
6edcb5dc TB |
1954 | process_reverse_offload (uint64_t fn, uint64_t mapnum, uint64_t hostaddrs, |
1955 | uint64_t sizes, uint64_t kinds, uint64_t dev_num64) | |
8c05d8cd TB |
1956 | { |
1957 | int dev_num = dev_num64; | |
6edcb5dc TB |
1958 | GOMP_PLUGIN_target_rev (fn, mapnum, hostaddrs, sizes, kinds, dev_num, |
1959 | NULL, NULL, NULL); | |
8c05d8cd TB |
1960 | } |
1961 | ||
237957cc AS |
1962 | /* Output any data written to console output from the kernel. It is expected |
1963 | that this function is polled during kernel execution. | |
1964 | ||
1965 | We print all entries from the last item printed to the next entry without | |
1966 | a "written" flag. If the "final" flag is set then it'll continue right to | |
1967 | the end. | |
1968 | ||
1969 | The print buffer is circular, but the from and to locations don't wrap when | |
1970 | the buffer does, so the output limit is UINT_MAX. The target blocks on | |
1971 | output when the buffer is full. */ | |
1972 | ||
1973 | static void | |
1974 | console_output (struct kernel_info *kernel, struct kernargs *kernargs, | |
1975 | bool final) | |
1976 | { | |
1977 | unsigned int limit = (sizeof (kernargs->output_data.queue) | |
1978 | / sizeof (kernargs->output_data.queue[0])); | |
1979 | ||
1980 | unsigned int from = __atomic_load_n (&kernargs->output_data.consumed, | |
1981 | __ATOMIC_ACQUIRE); | |
1982 | unsigned int to = kernargs->output_data.next_output; | |
1983 | ||
1984 | if (from > to) | |
1985 | { | |
1986 | /* Overflow. */ | |
1987 | if (final) | |
1988 | printf ("GCN print buffer overflowed.\n"); | |
1989 | return; | |
1990 | } | |
1991 | ||
1992 | unsigned int i; | |
1993 | for (i = from; i < to; i++) | |
1994 | { | |
1995 | struct printf_data *data = &kernargs->output_data.queue[i%limit]; | |
1996 | ||
1997 | if (!data->written && !final) | |
1998 | break; | |
1999 | ||
2000 | switch (data->type) | |
2001 | { | |
2002 | case 0: printf ("%.128s%ld\n", data->msg, data->ivalue); break; | |
2003 | case 1: printf ("%.128s%f\n", data->msg, data->dvalue); break; | |
2004 | case 2: printf ("%.128s%.128s\n", data->msg, data->text); break; | |
2005 | case 3: printf ("%.128s%.128s", data->msg, data->text); break; | |
8c05d8cd | 2006 | case 4: |
6edcb5dc TB |
2007 | process_reverse_offload (data->value_u64[0], data->value_u64[1], |
2008 | data->value_u64[2], data->value_u64[3], | |
2009 | data->value_u64[4], data->value_u64[5]); | |
8c05d8cd | 2010 | break; |
237957cc AS |
2011 | default: printf ("GCN print buffer error!\n"); break; |
2012 | } | |
2013 | data->written = 0; | |
2014 | __atomic_store_n (&kernargs->output_data.consumed, i+1, | |
2015 | __ATOMIC_RELEASE); | |
2016 | } | |
2017 | fflush (stdout); | |
2018 | } | |
2019 | ||
2020 | /* Release data structure created for a kernel dispatch in SHADOW argument, | |
2021 | and clean up the signal and memory allocations. */ | |
2022 | ||
2023 | static void | |
2024 | release_kernel_dispatch (struct kernel_dispatch *shadow) | |
2025 | { | |
2026 | GCN_DEBUG ("Released kernel dispatch: %p\n", shadow); | |
2027 | ||
2028 | struct kernargs *kernargs = shadow->kernarg_address; | |
f6fff8a6 AS |
2029 | void *addr = (void *)kernargs->abi.arena_ptr; |
2030 | if (!addr) | |
2031 | addr = (void *)kernargs->abi.stack_ptr; | |
2032 | release_ephemeral_memories (shadow->agent, addr); | |
237957cc AS |
2033 | |
2034 | hsa_fns.hsa_memory_free_fn (shadow->kernarg_address); | |
2035 | ||
2036 | hsa_signal_t s; | |
2037 | s.handle = shadow->signal; | |
2038 | hsa_fns.hsa_signal_destroy_fn (s); | |
2039 | ||
2040 | free (shadow); | |
2041 | } | |
2042 | ||
2043 | /* Extract the properties from a kernel binary. */ | |
2044 | ||
2045 | static void | |
2046 | init_kernel_properties (struct kernel_info *kernel) | |
2047 | { | |
2048 | hsa_status_t status; | |
2049 | struct agent_info *agent = kernel->agent; | |
2050 | hsa_executable_symbol_t kernel_symbol; | |
f062c3f1 AS |
2051 | char *buf = alloca (strlen (kernel->name) + 4); |
2052 | sprintf (buf, "%s.kd", kernel->name); | |
237957cc | 2053 | status = hsa_fns.hsa_executable_get_symbol_fn (agent->executable, NULL, |
f062c3f1 | 2054 | buf, agent->id, |
237957cc AS |
2055 | 0, &kernel_symbol); |
2056 | if (status != HSA_STATUS_SUCCESS) | |
2057 | { | |
2058 | hsa_warn ("Could not find symbol for kernel in the code object", status); | |
f062c3f1 | 2059 | fprintf (stderr, "not found name: '%s'\n", buf); |
237957cc AS |
2060 | dump_executable_symbols (agent->executable); |
2061 | goto failure; | |
2062 | } | |
2063 | GCN_DEBUG ("Located kernel %s\n", kernel->name); | |
2064 | status = hsa_fns.hsa_executable_symbol_get_info_fn | |
2065 | (kernel_symbol, HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_OBJECT, &kernel->object); | |
2066 | if (status != HSA_STATUS_SUCCESS) | |
2067 | hsa_fatal ("Could not extract a kernel object from its symbol", status); | |
2068 | status = hsa_fns.hsa_executable_symbol_get_info_fn | |
2069 | (kernel_symbol, HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_KERNARG_SEGMENT_SIZE, | |
2070 | &kernel->kernarg_segment_size); | |
2071 | if (status != HSA_STATUS_SUCCESS) | |
2072 | hsa_fatal ("Could not get info about kernel argument size", status); | |
2073 | status = hsa_fns.hsa_executable_symbol_get_info_fn | |
2074 | (kernel_symbol, HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_GROUP_SEGMENT_SIZE, | |
2075 | &kernel->group_segment_size); | |
2076 | if (status != HSA_STATUS_SUCCESS) | |
2077 | hsa_fatal ("Could not get info about kernel group segment size", status); | |
2078 | status = hsa_fns.hsa_executable_symbol_get_info_fn | |
2079 | (kernel_symbol, HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_PRIVATE_SEGMENT_SIZE, | |
2080 | &kernel->private_segment_size); | |
2081 | if (status != HSA_STATUS_SUCCESS) | |
2082 | hsa_fatal ("Could not get info about kernel private segment size", | |
2083 | status); | |
2084 | ||
2085 | /* The kernel type is not known until something tries to launch it. */ | |
2086 | kernel->kind = KIND_UNKNOWN; | |
2087 | ||
2088 | GCN_DEBUG ("Kernel structure for %s fully initialized with " | |
2089 | "following segment sizes: \n", kernel->name); | |
2090 | GCN_DEBUG (" group_segment_size: %u\n", | |
2091 | (unsigned) kernel->group_segment_size); | |
2092 | GCN_DEBUG (" private_segment_size: %u\n", | |
2093 | (unsigned) kernel->private_segment_size); | |
2094 | GCN_DEBUG (" kernarg_segment_size: %u\n", | |
2095 | (unsigned) kernel->kernarg_segment_size); | |
2096 | return; | |
2097 | ||
2098 | failure: | |
2099 | kernel->initialization_failed = true; | |
2100 | } | |
2101 | ||
2102 | /* Do all the work that is necessary before running KERNEL for the first time. | |
2103 | The function assumes the program has been created, finalized and frozen by | |
2104 | create_and_finalize_hsa_program. */ | |
2105 | ||
2106 | static void | |
2107 | init_kernel (struct kernel_info *kernel) | |
2108 | { | |
2109 | if (pthread_mutex_lock (&kernel->init_mutex)) | |
2110 | GOMP_PLUGIN_fatal ("Could not lock a GCN kernel initialization mutex"); | |
2111 | if (kernel->initialized) | |
2112 | { | |
2113 | if (pthread_mutex_unlock (&kernel->init_mutex)) | |
2114 | GOMP_PLUGIN_fatal ("Could not unlock a GCN kernel initialization " | |
2115 | "mutex"); | |
2116 | ||
2117 | return; | |
2118 | } | |
2119 | ||
2120 | init_kernel_properties (kernel); | |
2121 | ||
2122 | if (!kernel->initialization_failed) | |
2123 | { | |
2124 | GCN_DEBUG ("\n"); | |
2125 | ||
2126 | kernel->initialized = true; | |
2127 | } | |
2128 | if (pthread_mutex_unlock (&kernel->init_mutex)) | |
2129 | GOMP_PLUGIN_fatal ("Could not unlock a GCN kernel initialization " | |
2130 | "mutex"); | |
2131 | } | |
2132 | ||
2133 | /* Run KERNEL on its agent, pass VARS to it as arguments and take | |
2134 | launch attributes from KLA. | |
2135 | ||
2136 | MODULE_LOCKED indicates that the caller already holds the lock and | |
2137 | run_kernel need not lock it again. | |
2138 | If AQ is NULL then agent->sync_queue will be used. */ | |
2139 | ||
2140 | static void | |
2141 | run_kernel (struct kernel_info *kernel, void *vars, | |
2142 | struct GOMP_kernel_launch_attributes *kla, | |
2143 | struct goacc_asyncqueue *aq, bool module_locked) | |
2144 | { | |
5a28e272 KCY |
2145 | GCN_DEBUG ("SGPRs: %d, VGPRs: %d\n", kernel->description->sgpr_count, |
2146 | kernel->description->vpgr_count); | |
2147 | ||
2148 | /* Reduce the number of threads/workers if there are insufficient | |
2149 | VGPRs available to run the kernels together. */ | |
2150 | if (kla->ndim == 3 && kernel->description->vpgr_count > 0) | |
2151 | { | |
2152 | int granulated_vgprs = (kernel->description->vpgr_count + 3) & ~3; | |
2153 | int max_threads = (256 / granulated_vgprs) * 4; | |
2154 | if (kla->gdims[2] > max_threads) | |
2155 | { | |
2156 | GCN_WARNING ("Too many VGPRs required to support %d threads/workers" | |
2157 | " per team/gang - reducing to %d threads/workers.\n", | |
2158 | kla->gdims[2], max_threads); | |
2159 | kla->gdims[2] = max_threads; | |
2160 | } | |
2161 | } | |
2162 | ||
237957cc AS |
2163 | GCN_DEBUG ("GCN launch on queue: %d:%d\n", kernel->agent->device_id, |
2164 | (aq ? aq->id : 0)); | |
2165 | GCN_DEBUG ("GCN launch attribs: gdims:["); | |
2166 | int i; | |
2167 | for (i = 0; i < kla->ndim; ++i) | |
2168 | { | |
2169 | if (i) | |
2170 | DEBUG_PRINT (", "); | |
2171 | DEBUG_PRINT ("%u", kla->gdims[i]); | |
2172 | } | |
2173 | DEBUG_PRINT ("], normalized gdims:["); | |
2174 | for (i = 0; i < kla->ndim; ++i) | |
2175 | { | |
2176 | if (i) | |
2177 | DEBUG_PRINT (", "); | |
2178 | DEBUG_PRINT ("%u", kla->gdims[i] / kla->wdims[i]); | |
2179 | } | |
2180 | DEBUG_PRINT ("], wdims:["); | |
2181 | for (i = 0; i < kla->ndim; ++i) | |
2182 | { | |
2183 | if (i) | |
2184 | DEBUG_PRINT (", "); | |
2185 | DEBUG_PRINT ("%u", kla->wdims[i]); | |
2186 | } | |
2187 | DEBUG_PRINT ("]\n"); | |
2188 | DEBUG_FLUSH (); | |
2189 | ||
2190 | struct agent_info *agent = kernel->agent; | |
2191 | if (!module_locked && pthread_rwlock_rdlock (&agent->module_rwlock)) | |
2192 | GOMP_PLUGIN_fatal ("Unable to read-lock a GCN agent rwlock"); | |
2193 | ||
2194 | if (!agent->initialized) | |
2195 | GOMP_PLUGIN_fatal ("Agent must be initialized"); | |
2196 | ||
2197 | if (!kernel->initialized) | |
2198 | GOMP_PLUGIN_fatal ("Called kernel must be initialized"); | |
2199 | ||
2200 | hsa_queue_t *command_q = (aq ? aq->hsa_queue : kernel->agent->sync_queue); | |
2201 | ||
2202 | uint64_t index | |
2203 | = hsa_fns.hsa_queue_add_write_index_release_fn (command_q, 1); | |
2204 | GCN_DEBUG ("Got AQL index %llu\n", (long long int) index); | |
2205 | ||
2206 | /* Wait until the queue is not full before writing the packet. */ | |
2207 | while (index - hsa_fns.hsa_queue_load_read_index_acquire_fn (command_q) | |
2208 | >= command_q->size) | |
2209 | ; | |
2210 | ||
2211 | /* Do not allow the dimensions to be overridden when running | |
2212 | constructors or destructors. */ | |
2213 | int override_x = kernel->kind == KIND_UNKNOWN ? 0 : override_x_dim; | |
2214 | int override_z = kernel->kind == KIND_UNKNOWN ? 0 : override_z_dim; | |
2215 | ||
2216 | hsa_kernel_dispatch_packet_t *packet; | |
2217 | packet = ((hsa_kernel_dispatch_packet_t *) command_q->base_address) | |
2218 | + index % command_q->size; | |
2219 | ||
2220 | memset (((uint8_t *) packet) + 4, 0, sizeof (*packet) - 4); | |
2221 | packet->grid_size_x = override_x ? : kla->gdims[0]; | |
2222 | packet->workgroup_size_x = get_group_size (kla->ndim, | |
2223 | packet->grid_size_x, | |
2224 | kla->wdims[0]); | |
2225 | ||
2226 | if (kla->ndim >= 2) | |
2227 | { | |
2228 | packet->grid_size_y = kla->gdims[1]; | |
2229 | packet->workgroup_size_y = get_group_size (kla->ndim, kla->gdims[1], | |
2230 | kla->wdims[1]); | |
2231 | } | |
2232 | else | |
2233 | { | |
2234 | packet->grid_size_y = 1; | |
2235 | packet->workgroup_size_y = 1; | |
2236 | } | |
2237 | ||
2238 | if (kla->ndim == 3) | |
2239 | { | |
2240 | packet->grid_size_z = limit_worker_threads (override_z | |
2241 | ? : kla->gdims[2]); | |
2242 | packet->workgroup_size_z = get_group_size (kla->ndim, | |
2243 | packet->grid_size_z, | |
2244 | kla->wdims[2]); | |
2245 | } | |
2246 | else | |
2247 | { | |
2248 | packet->grid_size_z = 1; | |
2249 | packet->workgroup_size_z = 1; | |
2250 | } | |
2251 | ||
2252 | GCN_DEBUG ("GCN launch actuals: grid:[%u, %u, %u]," | |
2253 | " normalized grid:[%u, %u, %u], workgroup:[%u, %u, %u]\n", | |
2254 | packet->grid_size_x, packet->grid_size_y, packet->grid_size_z, | |
2255 | packet->grid_size_x / packet->workgroup_size_x, | |
2256 | packet->grid_size_y / packet->workgroup_size_y, | |
2257 | packet->grid_size_z / packet->workgroup_size_z, | |
2258 | packet->workgroup_size_x, packet->workgroup_size_y, | |
2259 | packet->workgroup_size_z); | |
2260 | ||
2261 | struct kernel_dispatch *shadow | |
f6fff8a6 AS |
2262 | = create_kernel_dispatch (kernel, packet->grid_size_x, |
2263 | packet->grid_size_z); | |
237957cc AS |
2264 | shadow->queue = command_q; |
2265 | ||
2266 | if (debug) | |
2267 | { | |
2268 | fprintf (stderr, "\nKernel has following dependencies:\n"); | |
2269 | print_kernel_dispatch (shadow, 2); | |
2270 | } | |
2271 | ||
2272 | packet->private_segment_size = kernel->private_segment_size; | |
2273 | packet->group_segment_size = kernel->group_segment_size; | |
2274 | packet->kernel_object = kernel->object; | |
2275 | packet->kernarg_address = shadow->kernarg_address; | |
2276 | hsa_signal_t s; | |
2277 | s.handle = shadow->signal; | |
2278 | packet->completion_signal = s; | |
2279 | hsa_fns.hsa_signal_store_relaxed_fn (s, 1); | |
2280 | memcpy (shadow->kernarg_address, &vars, sizeof (vars)); | |
2281 | ||
2282 | GCN_DEBUG ("Copying kernel runtime pointer to kernarg_address\n"); | |
2283 | ||
2284 | uint16_t header; | |
2285 | header = HSA_PACKET_TYPE_KERNEL_DISPATCH << HSA_PACKET_HEADER_TYPE; | |
2286 | header |= HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_ACQUIRE_FENCE_SCOPE; | |
2287 | header |= HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_RELEASE_FENCE_SCOPE; | |
2288 | ||
2289 | GCN_DEBUG ("Going to dispatch kernel %s on device %d\n", kernel->name, | |
2290 | agent->device_id); | |
2291 | ||
2292 | packet_store_release ((uint32_t *) packet, header, | |
2293 | (uint16_t) kla->ndim | |
2294 | << HSA_KERNEL_DISPATCH_PACKET_SETUP_DIMENSIONS); | |
2295 | ||
2296 | hsa_fns.hsa_signal_store_release_fn (command_q->doorbell_signal, | |
2297 | index); | |
2298 | ||
2299 | GCN_DEBUG ("Kernel dispatched, waiting for completion\n"); | |
2300 | ||
2301 | /* Root signal waits with 1ms timeout. */ | |
2302 | while (hsa_fns.hsa_signal_wait_acquire_fn (s, HSA_SIGNAL_CONDITION_LT, 1, | |
2303 | 1000 * 1000, | |
2304 | HSA_WAIT_STATE_BLOCKED) != 0) | |
2305 | { | |
2306 | console_output (kernel, shadow->kernarg_address, false); | |
2307 | } | |
2308 | console_output (kernel, shadow->kernarg_address, true); | |
2309 | ||
2310 | struct kernargs *kernargs = shadow->kernarg_address; | |
2311 | unsigned int return_value = (unsigned int)kernargs->output_data.return_value; | |
2312 | ||
2313 | release_kernel_dispatch (shadow); | |
2314 | ||
2315 | if (!module_locked && pthread_rwlock_unlock (&agent->module_rwlock)) | |
2316 | GOMP_PLUGIN_fatal ("Unable to unlock a GCN agent rwlock"); | |
2317 | ||
2318 | unsigned int upper = (return_value & ~0xffff) >> 16; | |
2319 | if (upper == 0xcafe) | |
2320 | ; // exit not called, normal termination. | |
2321 | else if (upper == 0xffff) | |
2322 | ; // exit called. | |
2323 | else | |
2324 | { | |
2325 | GOMP_PLUGIN_error ("Possible kernel exit value corruption, 2 most" | |
2326 | " significant bytes aren't 0xffff or 0xcafe: 0x%x\n", | |
2327 | return_value); | |
2328 | abort (); | |
2329 | } | |
2330 | ||
2331 | if (upper == 0xffff) | |
2332 | { | |
2333 | unsigned int signal = (return_value >> 8) & 0xff; | |
2334 | ||
2335 | if (signal == SIGABRT) | |
2336 | { | |
2337 | GCN_WARNING ("GCN Kernel aborted\n"); | |
2338 | abort (); | |
2339 | } | |
2340 | else if (signal != 0) | |
2341 | { | |
2342 | GCN_WARNING ("GCN Kernel received unknown signal\n"); | |
2343 | abort (); | |
2344 | } | |
2345 | ||
2346 | GCN_DEBUG ("GCN Kernel exited with value: %d\n", return_value & 0xff); | |
2347 | exit (return_value & 0xff); | |
2348 | } | |
2349 | } | |
2350 | ||
2351 | /* }}} */ | |
2352 | /* {{{ Load/Unload */ | |
2353 | ||
2354 | /* Initialize KERNEL from D and other parameters. Return true on success. */ | |
2355 | ||
2356 | static bool | |
2357 | init_basic_kernel_info (struct kernel_info *kernel, | |
2358 | struct hsa_kernel_description *d, | |
2359 | struct agent_info *agent, | |
2360 | struct module_info *module) | |
2361 | { | |
2362 | kernel->agent = agent; | |
2363 | kernel->module = module; | |
2364 | kernel->name = d->name; | |
5a28e272 | 2365 | kernel->description = d; |
237957cc AS |
2366 | if (pthread_mutex_init (&kernel->init_mutex, NULL)) |
2367 | { | |
2368 | GOMP_PLUGIN_error ("Failed to initialize a GCN kernel mutex"); | |
2369 | return false; | |
2370 | } | |
2371 | return true; | |
2372 | } | |
2373 | ||
7d593fd6 FH |
2374 | /* Check that the GCN ISA of the given image matches the ISA of the agent. */ |
2375 | ||
2376 | static bool | |
2377 | isa_matches_agent (struct agent_info *agent, Elf64_Ehdr *image) | |
2378 | { | |
2379 | int isa_field = elf_gcn_isa_field (image); | |
2380 | const char* isa_s = isa_hsa_name (isa_field); | |
2381 | if (!isa_s) | |
2382 | { | |
2383 | hsa_error ("Unsupported ISA in GCN code object.", HSA_STATUS_ERROR); | |
2384 | return false; | |
2385 | } | |
2386 | ||
2387 | if (isa_field != agent->device_isa) | |
2388 | { | |
2389 | char msg[120]; | |
2390 | const char *agent_isa_s = isa_hsa_name (agent->device_isa); | |
2391 | const char *agent_isa_gcc_s = isa_gcc_name (agent->device_isa); | |
2392 | assert (agent_isa_s); | |
2393 | assert (agent_isa_gcc_s); | |
2394 | ||
2395 | snprintf (msg, sizeof msg, | |
2396 | "GCN code object ISA '%s' does not match GPU ISA '%s'.\n" | |
4a206161 | 2397 | "Try to recompile with '-foffload-options=-march=%s'.\n", |
7d593fd6 FH |
2398 | isa_s, agent_isa_s, agent_isa_gcc_s); |
2399 | ||
2400 | hsa_error (msg, HSA_STATUS_ERROR); | |
2401 | return false; | |
2402 | } | |
2403 | ||
2404 | return true; | |
2405 | } | |
2406 | ||
237957cc AS |
2407 | /* Create and finalize the program consisting of all loaded modules. */ |
2408 | ||
2409 | static bool | |
2410 | create_and_finalize_hsa_program (struct agent_info *agent) | |
2411 | { | |
2412 | hsa_status_t status; | |
237957cc AS |
2413 | bool res = true; |
2414 | if (pthread_mutex_lock (&agent->prog_mutex)) | |
2415 | { | |
2416 | GOMP_PLUGIN_error ("Could not lock a GCN agent program mutex"); | |
2417 | return false; | |
2418 | } | |
2419 | if (agent->prog_finalized) | |
2420 | goto final; | |
2421 | ||
2422 | status | |
2423 | = hsa_fns.hsa_executable_create_fn (HSA_PROFILE_FULL, | |
2424 | HSA_EXECUTABLE_STATE_UNFROZEN, | |
2425 | "", &agent->executable); | |
2426 | if (status != HSA_STATUS_SUCCESS) | |
2427 | { | |
2428 | hsa_error ("Could not create GCN executable", status); | |
2429 | goto fail; | |
2430 | } | |
2431 | ||
2432 | /* Load any GCN modules. */ | |
2433 | struct module_info *module = agent->module; | |
2434 | if (module) | |
2435 | { | |
2436 | Elf64_Ehdr *image = (Elf64_Ehdr *)module->image_desc->gcn_image->image; | |
2437 | ||
7d593fd6 FH |
2438 | if (!isa_matches_agent (agent, image)) |
2439 | goto fail; | |
2440 | ||
237957cc AS |
2441 | hsa_code_object_t co = { 0 }; |
2442 | status = hsa_fns.hsa_code_object_deserialize_fn | |
2443 | (module->image_desc->gcn_image->image, | |
2444 | module->image_desc->gcn_image->size, | |
2445 | NULL, &co); | |
2446 | if (status != HSA_STATUS_SUCCESS) | |
2447 | { | |
2448 | hsa_error ("Could not deserialize GCN code object", status); | |
2449 | goto fail; | |
2450 | } | |
2451 | ||
2452 | status = hsa_fns.hsa_executable_load_code_object_fn | |
2453 | (agent->executable, agent->id, co, ""); | |
2454 | if (status != HSA_STATUS_SUCCESS) | |
2455 | { | |
2456 | hsa_error ("Could not load GCN code object", status); | |
2457 | goto fail; | |
2458 | } | |
2459 | ||
2460 | if (!module->heap) | |
2461 | { | |
2462 | status = hsa_fns.hsa_memory_allocate_fn (agent->data_region, | |
2463 | gcn_kernel_heap_size, | |
2464 | (void**)&module->heap); | |
2465 | if (status != HSA_STATUS_SUCCESS) | |
2466 | { | |
2467 | hsa_error ("Could not allocate memory for GCN heap", status); | |
2468 | goto fail; | |
2469 | } | |
2470 | ||
2471 | status = hsa_fns.hsa_memory_assign_agent_fn | |
2472 | (module->heap, agent->id, HSA_ACCESS_PERMISSION_RW); | |
2473 | if (status != HSA_STATUS_SUCCESS) | |
2474 | { | |
2475 | hsa_error ("Could not assign GCN heap memory to device", status); | |
2476 | goto fail; | |
2477 | } | |
2478 | ||
2479 | hsa_fns.hsa_memory_copy_fn (&module->heap->size, | |
2480 | &gcn_kernel_heap_size, | |
2481 | sizeof (gcn_kernel_heap_size)); | |
2482 | } | |
2483 | ||
2484 | } | |
2485 | ||
2486 | if (debug) | |
2487 | dump_executable_symbols (agent->executable); | |
2488 | ||
2489 | status = hsa_fns.hsa_executable_freeze_fn (agent->executable, ""); | |
2490 | if (status != HSA_STATUS_SUCCESS) | |
2491 | { | |
2492 | hsa_error ("Could not freeze the GCN executable", status); | |
2493 | goto fail; | |
2494 | } | |
2495 | ||
237957cc AS |
2496 | final: |
2497 | agent->prog_finalized = true; | |
2498 | ||
2499 | if (pthread_mutex_unlock (&agent->prog_mutex)) | |
2500 | { | |
2501 | GOMP_PLUGIN_error ("Could not unlock a GCN agent program mutex"); | |
2502 | res = false; | |
2503 | } | |
2504 | ||
2505 | return res; | |
2506 | ||
2507 | fail: | |
2508 | res = false; | |
2509 | goto final; | |
2510 | } | |
2511 | ||
2512 | /* Free the HSA program in agent and everything associated with it and set | |
2513 | agent->prog_finalized and the initialized flags of all kernels to false. | |
2514 | Return TRUE on success. */ | |
2515 | ||
2516 | static bool | |
2517 | destroy_hsa_program (struct agent_info *agent) | |
2518 | { | |
2519 | if (!agent->prog_finalized) | |
2520 | return true; | |
2521 | ||
2522 | hsa_status_t status; | |
2523 | ||
2524 | GCN_DEBUG ("Destroying the current GCN program.\n"); | |
2525 | ||
2526 | status = hsa_fns.hsa_executable_destroy_fn (agent->executable); | |
2527 | if (status != HSA_STATUS_SUCCESS) | |
2528 | return hsa_error ("Could not destroy GCN executable", status); | |
2529 | ||
2530 | if (agent->module) | |
2531 | { | |
2532 | int i; | |
2533 | for (i = 0; i < agent->module->kernel_count; i++) | |
2534 | agent->module->kernels[i].initialized = false; | |
2535 | ||
2536 | if (agent->module->heap) | |
2537 | { | |
2538 | hsa_fns.hsa_memory_free_fn (agent->module->heap); | |
2539 | agent->module->heap = NULL; | |
2540 | } | |
2541 | } | |
2542 | agent->prog_finalized = false; | |
2543 | return true; | |
2544 | } | |
2545 | ||
2546 | /* Deinitialize all information associated with MODULE and kernels within | |
2547 | it. Return TRUE on success. */ | |
2548 | ||
2549 | static bool | |
2550 | destroy_module (struct module_info *module, bool locked) | |
2551 | { | |
2552 | /* Run destructors before destroying module. */ | |
2553 | struct GOMP_kernel_launch_attributes kla = | |
2554 | { 3, | |
2555 | /* Grid size. */ | |
2556 | { 1, 64, 1 }, | |
2557 | /* Work-group size. */ | |
2558 | { 1, 64, 1 } | |
2559 | }; | |
2560 | ||
2561 | if (module->fini_array_func) | |
2562 | { | |
2563 | init_kernel (module->fini_array_func); | |
2564 | run_kernel (module->fini_array_func, NULL, &kla, NULL, locked); | |
2565 | } | |
2566 | module->constructors_run_p = false; | |
2567 | ||
2568 | int i; | |
2569 | for (i = 0; i < module->kernel_count; i++) | |
2570 | if (pthread_mutex_destroy (&module->kernels[i].init_mutex)) | |
2571 | { | |
2572 | GOMP_PLUGIN_error ("Failed to destroy a GCN kernel initialization " | |
2573 | "mutex"); | |
2574 | return false; | |
2575 | } | |
2576 | ||
2577 | return true; | |
2578 | } | |
2579 | ||
2580 | /* }}} */ | |
2581 | /* {{{ Async */ | |
2582 | ||
2583 | /* Callback of dispatch queues to report errors. */ | |
2584 | ||
2585 | static void | |
2586 | execute_queue_entry (struct goacc_asyncqueue *aq, int index) | |
2587 | { | |
2588 | struct queue_entry *entry = &aq->queue[index]; | |
2589 | ||
2590 | switch (entry->type) | |
2591 | { | |
2592 | case KERNEL_LAUNCH: | |
2593 | if (DEBUG_QUEUES) | |
2594 | GCN_DEBUG ("Async thread %d:%d: Executing launch entry (%d)\n", | |
2595 | aq->agent->device_id, aq->id, index); | |
2596 | run_kernel (entry->u.launch.kernel, | |
2597 | entry->u.launch.vars, | |
2598 | &entry->u.launch.kla, aq, false); | |
2599 | if (DEBUG_QUEUES) | |
2600 | GCN_DEBUG ("Async thread %d:%d: Executing launch entry (%d) done\n", | |
2601 | aq->agent->device_id, aq->id, index); | |
2602 | break; | |
2603 | ||
2604 | case CALLBACK: | |
2605 | if (DEBUG_QUEUES) | |
2606 | GCN_DEBUG ("Async thread %d:%d: Executing callback entry (%d)\n", | |
2607 | aq->agent->device_id, aq->id, index); | |
2608 | entry->u.callback.fn (entry->u.callback.data); | |
2609 | if (DEBUG_QUEUES) | |
2610 | GCN_DEBUG ("Async thread %d:%d: Executing callback entry (%d) done\n", | |
2611 | aq->agent->device_id, aq->id, index); | |
2612 | break; | |
2613 | ||
2614 | case ASYNC_WAIT: | |
2615 | { | |
2616 | /* FIXME: is it safe to access a placeholder that may already have | |
2617 | been executed? */ | |
2618 | struct placeholder *placeholderp = entry->u.asyncwait.placeholderp; | |
2619 | ||
2620 | if (DEBUG_QUEUES) | |
2621 | GCN_DEBUG ("Async thread %d:%d: Executing async wait entry (%d)\n", | |
2622 | aq->agent->device_id, aq->id, index); | |
2623 | ||
2624 | pthread_mutex_lock (&placeholderp->mutex); | |
2625 | ||
2626 | while (!placeholderp->executed) | |
2627 | pthread_cond_wait (&placeholderp->cond, &placeholderp->mutex); | |
2628 | ||
2629 | pthread_mutex_unlock (&placeholderp->mutex); | |
2630 | ||
2631 | if (pthread_cond_destroy (&placeholderp->cond)) | |
2632 | GOMP_PLUGIN_error ("Failed to destroy serialization cond"); | |
2633 | ||
2634 | if (pthread_mutex_destroy (&placeholderp->mutex)) | |
2635 | GOMP_PLUGIN_error ("Failed to destroy serialization mutex"); | |
2636 | ||
2637 | if (DEBUG_QUEUES) | |
2638 | GCN_DEBUG ("Async thread %d:%d: Executing async wait " | |
2639 | "entry (%d) done\n", aq->agent->device_id, aq->id, index); | |
2640 | } | |
2641 | break; | |
2642 | ||
2643 | case ASYNC_PLACEHOLDER: | |
2644 | pthread_mutex_lock (&entry->u.placeholder.mutex); | |
2645 | entry->u.placeholder.executed = 1; | |
2646 | pthread_cond_signal (&entry->u.placeholder.cond); | |
2647 | pthread_mutex_unlock (&entry->u.placeholder.mutex); | |
2648 | break; | |
2649 | ||
2650 | default: | |
2651 | GOMP_PLUGIN_fatal ("Unknown queue element"); | |
2652 | } | |
2653 | } | |
2654 | ||
2655 | /* This function is run as a thread to service an async queue in the | |
2656 | background. It runs continuously until the stop flag is set. */ | |
2657 | ||
2658 | static void * | |
2659 | drain_queue (void *thread_arg) | |
2660 | { | |
2661 | struct goacc_asyncqueue *aq = thread_arg; | |
2662 | ||
2663 | if (DRAIN_QUEUE_SYNCHRONOUS_P) | |
2664 | { | |
2665 | aq->drain_queue_stop = 2; | |
2666 | return NULL; | |
2667 | } | |
2668 | ||
2669 | pthread_mutex_lock (&aq->mutex); | |
2670 | ||
2671 | while (true) | |
2672 | { | |
2673 | if (aq->drain_queue_stop) | |
2674 | break; | |
2675 | ||
2676 | if (aq->queue_n > 0) | |
2677 | { | |
2678 | pthread_mutex_unlock (&aq->mutex); | |
2679 | execute_queue_entry (aq, aq->queue_first); | |
2680 | ||
2681 | pthread_mutex_lock (&aq->mutex); | |
2682 | aq->queue_first = ((aq->queue_first + 1) | |
2683 | % ASYNC_QUEUE_SIZE); | |
2684 | aq->queue_n--; | |
2685 | ||
2686 | if (DEBUG_THREAD_SIGNAL) | |
2687 | GCN_DEBUG ("Async thread %d:%d: broadcasting queue out update\n", | |
2688 | aq->agent->device_id, aq->id); | |
2689 | pthread_cond_broadcast (&aq->queue_cond_out); | |
2690 | pthread_mutex_unlock (&aq->mutex); | |
2691 | ||
2692 | if (DEBUG_QUEUES) | |
2693 | GCN_DEBUG ("Async thread %d:%d: continue\n", aq->agent->device_id, | |
2694 | aq->id); | |
2695 | pthread_mutex_lock (&aq->mutex); | |
2696 | } | |
2697 | else | |
2698 | { | |
2699 | if (DEBUG_THREAD_SLEEP) | |
2700 | GCN_DEBUG ("Async thread %d:%d: going to sleep\n", | |
2701 | aq->agent->device_id, aq->id); | |
2702 | pthread_cond_wait (&aq->queue_cond_in, &aq->mutex); | |
2703 | if (DEBUG_THREAD_SLEEP) | |
2704 | GCN_DEBUG ("Async thread %d:%d: woke up, rechecking\n", | |
2705 | aq->agent->device_id, aq->id); | |
2706 | } | |
2707 | } | |
2708 | ||
2709 | aq->drain_queue_stop = 2; | |
2710 | if (DEBUG_THREAD_SIGNAL) | |
2711 | GCN_DEBUG ("Async thread %d:%d: broadcasting last queue out update\n", | |
2712 | aq->agent->device_id, aq->id); | |
2713 | pthread_cond_broadcast (&aq->queue_cond_out); | |
2714 | pthread_mutex_unlock (&aq->mutex); | |
2715 | ||
2716 | GCN_DEBUG ("Async thread %d:%d: returning\n", aq->agent->device_id, aq->id); | |
2717 | return NULL; | |
2718 | } | |
2719 | ||
2720 | /* This function is used only when DRAIN_QUEUE_SYNCHRONOUS_P is set, which | |
2721 | is not usually the case. This is just a debug tool. */ | |
2722 | ||
2723 | static void | |
2724 | drain_queue_synchronous (struct goacc_asyncqueue *aq) | |
2725 | { | |
2726 | pthread_mutex_lock (&aq->mutex); | |
2727 | ||
2728 | while (aq->queue_n > 0) | |
2729 | { | |
2730 | execute_queue_entry (aq, aq->queue_first); | |
2731 | ||
2732 | aq->queue_first = ((aq->queue_first + 1) | |
2733 | % ASYNC_QUEUE_SIZE); | |
2734 | aq->queue_n--; | |
2735 | } | |
2736 | ||
2737 | pthread_mutex_unlock (&aq->mutex); | |
2738 | } | |
2739 | ||
d88b27da JB |
2740 | /* Block the current thread until an async queue is writable. The aq->mutex |
2741 | lock should be held on entry, and remains locked on exit. */ | |
237957cc AS |
2742 | |
2743 | static void | |
2744 | wait_for_queue_nonfull (struct goacc_asyncqueue *aq) | |
2745 | { | |
2746 | if (aq->queue_n == ASYNC_QUEUE_SIZE) | |
2747 | { | |
237957cc AS |
2748 | /* Queue is full. Wait for it to not be full. */ |
2749 | while (aq->queue_n == ASYNC_QUEUE_SIZE) | |
2750 | pthread_cond_wait (&aq->queue_cond_out, &aq->mutex); | |
237957cc AS |
2751 | } |
2752 | } | |
2753 | ||
2754 | /* Request an asynchronous kernel launch on the specified queue. This | |
2755 | may block if the queue is full, but returns without waiting for the | |
2756 | kernel to run. */ | |
2757 | ||
2758 | static void | |
2759 | queue_push_launch (struct goacc_asyncqueue *aq, struct kernel_info *kernel, | |
2760 | void *vars, struct GOMP_kernel_launch_attributes *kla) | |
2761 | { | |
2762 | assert (aq->agent == kernel->agent); | |
2763 | ||
237957cc AS |
2764 | pthread_mutex_lock (&aq->mutex); |
2765 | ||
d88b27da JB |
2766 | wait_for_queue_nonfull (aq); |
2767 | ||
237957cc AS |
2768 | int queue_last = ((aq->queue_first + aq->queue_n) |
2769 | % ASYNC_QUEUE_SIZE); | |
2770 | if (DEBUG_QUEUES) | |
2771 | GCN_DEBUG ("queue_push_launch %d:%d: at %i\n", aq->agent->device_id, | |
2772 | aq->id, queue_last); | |
2773 | ||
2774 | aq->queue[queue_last].type = KERNEL_LAUNCH; | |
2775 | aq->queue[queue_last].u.launch.kernel = kernel; | |
2776 | aq->queue[queue_last].u.launch.vars = vars; | |
2777 | aq->queue[queue_last].u.launch.kla = *kla; | |
2778 | ||
2779 | aq->queue_n++; | |
2780 | ||
2781 | if (DEBUG_THREAD_SIGNAL) | |
2782 | GCN_DEBUG ("signalling async thread %d:%d: cond_in\n", | |
2783 | aq->agent->device_id, aq->id); | |
2784 | pthread_cond_signal (&aq->queue_cond_in); | |
2785 | ||
2786 | pthread_mutex_unlock (&aq->mutex); | |
2787 | } | |
2788 | ||
2789 | /* Request an asynchronous callback on the specified queue. The callback | |
2790 | function will be called, with the given opaque data, from the appropriate | |
2791 | async thread, when all previous items on that queue are complete. */ | |
2792 | ||
2793 | static void | |
2794 | queue_push_callback (struct goacc_asyncqueue *aq, void (*fn)(void *), | |
2795 | void *data) | |
2796 | { | |
237957cc AS |
2797 | pthread_mutex_lock (&aq->mutex); |
2798 | ||
d88b27da JB |
2799 | wait_for_queue_nonfull (aq); |
2800 | ||
237957cc AS |
2801 | int queue_last = ((aq->queue_first + aq->queue_n) |
2802 | % ASYNC_QUEUE_SIZE); | |
2803 | if (DEBUG_QUEUES) | |
2804 | GCN_DEBUG ("queue_push_callback %d:%d: at %i\n", aq->agent->device_id, | |
2805 | aq->id, queue_last); | |
2806 | ||
2807 | aq->queue[queue_last].type = CALLBACK; | |
2808 | aq->queue[queue_last].u.callback.fn = fn; | |
2809 | aq->queue[queue_last].u.callback.data = data; | |
2810 | ||
2811 | aq->queue_n++; | |
2812 | ||
2813 | if (DEBUG_THREAD_SIGNAL) | |
2814 | GCN_DEBUG ("signalling async thread %d:%d: cond_in\n", | |
2815 | aq->agent->device_id, aq->id); | |
2816 | pthread_cond_signal (&aq->queue_cond_in); | |
2817 | ||
2818 | pthread_mutex_unlock (&aq->mutex); | |
2819 | } | |
2820 | ||
2821 | /* Request that a given async thread wait for another thread (unspecified) to | |
2822 | reach the given placeholder. The wait will occur when all previous entries | |
2823 | on the queue are complete. A placeholder is effectively a kind of signal | |
2824 | which simply sets a flag when encountered in a queue. */ | |
2825 | ||
2826 | static void | |
2827 | queue_push_asyncwait (struct goacc_asyncqueue *aq, | |
2828 | struct placeholder *placeholderp) | |
2829 | { | |
237957cc AS |
2830 | pthread_mutex_lock (&aq->mutex); |
2831 | ||
d88b27da JB |
2832 | wait_for_queue_nonfull (aq); |
2833 | ||
237957cc AS |
2834 | int queue_last = ((aq->queue_first + aq->queue_n) % ASYNC_QUEUE_SIZE); |
2835 | if (DEBUG_QUEUES) | |
2836 | GCN_DEBUG ("queue_push_asyncwait %d:%d: at %i\n", aq->agent->device_id, | |
2837 | aq->id, queue_last); | |
2838 | ||
2839 | aq->queue[queue_last].type = ASYNC_WAIT; | |
2840 | aq->queue[queue_last].u.asyncwait.placeholderp = placeholderp; | |
2841 | ||
2842 | aq->queue_n++; | |
2843 | ||
2844 | if (DEBUG_THREAD_SIGNAL) | |
2845 | GCN_DEBUG ("signalling async thread %d:%d: cond_in\n", | |
2846 | aq->agent->device_id, aq->id); | |
2847 | pthread_cond_signal (&aq->queue_cond_in); | |
2848 | ||
2849 | pthread_mutex_unlock (&aq->mutex); | |
2850 | } | |
2851 | ||
2852 | /* Add a placeholder into an async queue. When the async thread reaches the | |
2853 | placeholder it will set the "executed" flag to true and continue. | |
2854 | Another thread may be waiting on this thread reaching the placeholder. */ | |
2855 | ||
2856 | static struct placeholder * | |
2857 | queue_push_placeholder (struct goacc_asyncqueue *aq) | |
2858 | { | |
2859 | struct placeholder *placeholderp; | |
2860 | ||
237957cc AS |
2861 | pthread_mutex_lock (&aq->mutex); |
2862 | ||
d88b27da JB |
2863 | wait_for_queue_nonfull (aq); |
2864 | ||
237957cc AS |
2865 | int queue_last = ((aq->queue_first + aq->queue_n) % ASYNC_QUEUE_SIZE); |
2866 | if (DEBUG_QUEUES) | |
2867 | GCN_DEBUG ("queue_push_placeholder %d:%d: at %i\n", aq->agent->device_id, | |
2868 | aq->id, queue_last); | |
2869 | ||
2870 | aq->queue[queue_last].type = ASYNC_PLACEHOLDER; | |
2871 | placeholderp = &aq->queue[queue_last].u.placeholder; | |
2872 | ||
2873 | if (pthread_mutex_init (&placeholderp->mutex, NULL)) | |
2874 | { | |
2875 | pthread_mutex_unlock (&aq->mutex); | |
2876 | GOMP_PLUGIN_error ("Failed to initialize serialization mutex"); | |
2877 | } | |
2878 | ||
2879 | if (pthread_cond_init (&placeholderp->cond, NULL)) | |
2880 | { | |
2881 | pthread_mutex_unlock (&aq->mutex); | |
2882 | GOMP_PLUGIN_error ("Failed to initialize serialization cond"); | |
2883 | } | |
2884 | ||
2885 | placeholderp->executed = 0; | |
2886 | ||
2887 | aq->queue_n++; | |
2888 | ||
2889 | if (DEBUG_THREAD_SIGNAL) | |
2890 | GCN_DEBUG ("signalling async thread %d:%d: cond_in\n", | |
2891 | aq->agent->device_id, aq->id); | |
2892 | pthread_cond_signal (&aq->queue_cond_in); | |
2893 | ||
2894 | pthread_mutex_unlock (&aq->mutex); | |
2895 | ||
2896 | return placeholderp; | |
2897 | } | |
2898 | ||
2899 | /* Signal an asynchronous thread to terminate, and wait for it to do so. */ | |
2900 | ||
2901 | static void | |
2902 | finalize_async_thread (struct goacc_asyncqueue *aq) | |
2903 | { | |
2904 | pthread_mutex_lock (&aq->mutex); | |
2905 | if (aq->drain_queue_stop == 2) | |
2906 | { | |
2907 | pthread_mutex_unlock (&aq->mutex); | |
2908 | return; | |
2909 | } | |
2910 | ||
2911 | aq->drain_queue_stop = 1; | |
2912 | ||
2913 | if (DEBUG_THREAD_SIGNAL) | |
2914 | GCN_DEBUG ("Signalling async thread %d:%d: cond_in\n", | |
2915 | aq->agent->device_id, aq->id); | |
2916 | pthread_cond_signal (&aq->queue_cond_in); | |
2917 | ||
2918 | while (aq->drain_queue_stop != 2) | |
2919 | { | |
2920 | if (DEBUG_THREAD_SLEEP) | |
2921 | GCN_DEBUG ("Waiting for async thread %d:%d to finish, putting thread" | |
2922 | " to sleep\n", aq->agent->device_id, aq->id); | |
2923 | pthread_cond_wait (&aq->queue_cond_out, &aq->mutex); | |
2924 | if (DEBUG_THREAD_SLEEP) | |
2925 | GCN_DEBUG ("Waiting, woke up thread %d:%d. Rechecking\n", | |
2926 | aq->agent->device_id, aq->id); | |
2927 | } | |
2928 | ||
2929 | GCN_DEBUG ("Done waiting for async thread %d:%d\n", aq->agent->device_id, | |
2930 | aq->id); | |
2931 | pthread_mutex_unlock (&aq->mutex); | |
2932 | ||
2933 | int err = pthread_join (aq->thread_drain_queue, NULL); | |
2934 | if (err != 0) | |
2935 | GOMP_PLUGIN_fatal ("Join async thread %d:%d: failed: %s", | |
2936 | aq->agent->device_id, aq->id, strerror (err)); | |
2937 | GCN_DEBUG ("Joined with async thread %d:%d\n", aq->agent->device_id, aq->id); | |
2938 | } | |
2939 | ||
2940 | /* Set up an async queue for OpenMP. There will be only one. The | |
2941 | implementation simply uses an OpenACC async queue. | |
2942 | FIXME: is this thread-safe if two threads call this function? */ | |
2943 | ||
2944 | static void | |
2945 | maybe_init_omp_async (struct agent_info *agent) | |
2946 | { | |
2947 | if (!agent->omp_async_queue) | |
2948 | agent->omp_async_queue | |
2949 | = GOMP_OFFLOAD_openacc_async_construct (agent->device_id); | |
2950 | } | |
2951 | ||
8d2f4ddf JB |
2952 | /* A wrapper that works around an issue in the HSA runtime with host-to-device |
2953 | copies from read-only pages. */ | |
2954 | ||
2955 | static void | |
2956 | hsa_memory_copy_wrapper (void *dst, const void *src, size_t len) | |
2957 | { | |
2958 | hsa_status_t status = hsa_fns.hsa_memory_copy_fn (dst, src, len); | |
2959 | ||
2960 | if (status == HSA_STATUS_SUCCESS) | |
2961 | return; | |
2962 | ||
2963 | /* It appears that the copy fails if the source data is in a read-only page. | |
2964 | We can't detect that easily, so try copying the data to a temporary buffer | |
2965 | and doing the copy again if we got an error above. */ | |
2966 | ||
2967 | GCN_WARNING ("Read-only data transfer bug workaround triggered for " | |
2968 | "[%p:+%d]\n", (void *) src, (int) len); | |
2969 | ||
2970 | void *src_copy = malloc (len); | |
2971 | memcpy (src_copy, src, len); | |
2972 | status = hsa_fns.hsa_memory_copy_fn (dst, (const void *) src_copy, len); | |
2973 | free (src_copy); | |
2974 | if (status != HSA_STATUS_SUCCESS) | |
2975 | GOMP_PLUGIN_error ("memory copy failed"); | |
2976 | } | |
2977 | ||
237957cc AS |
2978 | /* Copy data to or from a device. This is intended for use as an async |
2979 | callback event. */ | |
2980 | ||
2981 | static void | |
2982 | copy_data (void *data_) | |
2983 | { | |
2984 | struct copy_data *data = (struct copy_data *)data_; | |
2985 | GCN_DEBUG ("Async thread %d:%d: Copying %zu bytes from (%p) to (%p)\n", | |
2986 | data->aq->agent->device_id, data->aq->id, data->len, data->src, | |
2987 | data->dst); | |
8d2f4ddf | 2988 | hsa_memory_copy_wrapper (data->dst, data->src, data->len); |
237957cc AS |
2989 | free (data); |
2990 | } | |
2991 | ||
2992 | /* Free device data. This is intended for use as an async callback event. */ | |
2993 | ||
2994 | static void | |
2995 | gomp_offload_free (void *ptr) | |
2996 | { | |
2997 | GCN_DEBUG ("Async thread ?:?: Freeing %p\n", ptr); | |
2998 | GOMP_OFFLOAD_free (0, ptr); | |
2999 | } | |
3000 | ||
3001 | /* Request an asynchronous data copy, to or from a device, on a given queue. | |
9c41f5b9 | 3002 | The event will be registered as a callback. */ |
237957cc AS |
3003 | |
3004 | static void | |
3005 | queue_push_copy (struct goacc_asyncqueue *aq, void *dst, const void *src, | |
9c41f5b9 | 3006 | size_t len) |
237957cc AS |
3007 | { |
3008 | if (DEBUG_QUEUES) | |
3009 | GCN_DEBUG ("queue_push_copy %d:%d: %zu bytes from (%p) to (%p)\n", | |
3010 | aq->agent->device_id, aq->id, len, src, dst); | |
3011 | struct copy_data *data | |
3012 | = (struct copy_data *)GOMP_PLUGIN_malloc (sizeof (struct copy_data)); | |
3013 | data->dst = dst; | |
3014 | data->src = src; | |
3015 | data->len = len; | |
237957cc AS |
3016 | data->aq = aq; |
3017 | queue_push_callback (aq, copy_data, data); | |
3018 | } | |
3019 | ||
3020 | /* Return true if the given queue is currently empty. */ | |
3021 | ||
3022 | static int | |
3023 | queue_empty (struct goacc_asyncqueue *aq) | |
3024 | { | |
3025 | pthread_mutex_lock (&aq->mutex); | |
3026 | int res = aq->queue_n == 0 ? 1 : 0; | |
3027 | pthread_mutex_unlock (&aq->mutex); | |
3028 | ||
3029 | return res; | |
3030 | } | |
3031 | ||
3032 | /* Wait for a given queue to become empty. This implements an OpenACC wait | |
3033 | directive. */ | |
3034 | ||
3035 | static void | |
3036 | wait_queue (struct goacc_asyncqueue *aq) | |
3037 | { | |
3038 | if (DRAIN_QUEUE_SYNCHRONOUS_P) | |
3039 | { | |
3040 | drain_queue_synchronous (aq); | |
3041 | return; | |
3042 | } | |
3043 | ||
3044 | pthread_mutex_lock (&aq->mutex); | |
3045 | ||
3046 | while (aq->queue_n > 0) | |
3047 | { | |
3048 | if (DEBUG_THREAD_SLEEP) | |
3049 | GCN_DEBUG ("waiting for thread %d:%d, putting thread to sleep\n", | |
3050 | aq->agent->device_id, aq->id); | |
3051 | pthread_cond_wait (&aq->queue_cond_out, &aq->mutex); | |
3052 | if (DEBUG_THREAD_SLEEP) | |
3053 | GCN_DEBUG ("thread %d:%d woke up. Rechecking\n", aq->agent->device_id, | |
3054 | aq->id); | |
3055 | } | |
3056 | ||
3057 | pthread_mutex_unlock (&aq->mutex); | |
3058 | GCN_DEBUG ("waiting for thread %d:%d, done\n", aq->agent->device_id, aq->id); | |
3059 | } | |
3060 | ||
3061 | /* }}} */ | |
3062 | /* {{{ OpenACC support */ | |
3063 | ||
3064 | /* Execute an OpenACC kernel, synchronously or asynchronously. */ | |
3065 | ||
3066 | static void | |
3067 | gcn_exec (struct kernel_info *kernel, size_t mapnum, void **hostaddrs, | |
3068 | void **devaddrs, unsigned *dims, void *targ_mem_desc, bool async, | |
3069 | struct goacc_asyncqueue *aq) | |
3070 | { | |
3071 | if (!GOMP_OFFLOAD_can_run (kernel)) | |
3072 | GOMP_PLUGIN_fatal ("OpenACC host fallback unimplemented."); | |
3073 | ||
3074 | /* If we get here then this must be an OpenACC kernel. */ | |
3075 | kernel->kind = KIND_OPENACC; | |
3076 | ||
3077 | /* devaddrs must be double-indirect on the target. */ | |
3078 | void **ind_da = alloc_by_agent (kernel->agent, sizeof (void*) * mapnum); | |
3079 | for (size_t i = 0; i < mapnum; i++) | |
3080 | hsa_fns.hsa_memory_copy_fn (&ind_da[i], | |
3081 | devaddrs[i] ? &devaddrs[i] : &hostaddrs[i], | |
3082 | sizeof (void *)); | |
3083 | ||
3084 | struct hsa_kernel_description *hsa_kernel_desc = NULL; | |
3085 | for (unsigned i = 0; i < kernel->module->image_desc->kernel_count; i++) | |
3086 | { | |
3087 | struct hsa_kernel_description *d | |
3088 | = &kernel->module->image_desc->kernel_infos[i]; | |
3089 | if (d->name == kernel->name) | |
3090 | { | |
3091 | hsa_kernel_desc = d; | |
3092 | break; | |
3093 | } | |
3094 | } | |
3095 | ||
3096 | /* We may have statically-determined dimensions in | |
3097 | hsa_kernel_desc->oacc_dims[] or dimensions passed to this offload kernel | |
3098 | invocation at runtime in dims[]. We allow static dimensions to take | |
3099 | priority over dynamic dimensions when present (non-zero). */ | |
3100 | if (hsa_kernel_desc->oacc_dims[0] > 0) | |
3101 | dims[0] = hsa_kernel_desc->oacc_dims[0]; | |
3102 | if (hsa_kernel_desc->oacc_dims[1] > 0) | |
3103 | dims[1] = hsa_kernel_desc->oacc_dims[1]; | |
3104 | if (hsa_kernel_desc->oacc_dims[2] > 0) | |
3105 | dims[2] = hsa_kernel_desc->oacc_dims[2]; | |
3106 | ||
a78b1ab1 KCY |
3107 | /* Ideally, when a dimension isn't explicitly specified, we should |
3108 | tune it to run 40 (or 32?) threads per CU with no threads getting queued. | |
3109 | In practice, we tune for peak performance on BabelStream, which | |
3110 | for OpenACC is currently 32 threads per CU. */ | |
3111 | if (dims[0] == 0 && dims[1] == 0) | |
3112 | { | |
3113 | /* If any of the OpenACC dimensions remain 0 then we get to pick a | |
3114 | number. There isn't really a correct answer for this without a clue | |
3115 | about the problem size, so let's do a reasonable number of workers | |
3116 | and gangs. */ | |
237957cc | 3117 | |
a78b1ab1 KCY |
3118 | dims[0] = get_cu_count (kernel->agent) * 4; /* Gangs. */ |
3119 | dims[1] = 8; /* Workers. */ | |
3120 | } | |
3121 | else if (dims[0] == 0 && dims[1] > 0) | |
3122 | { | |
3123 | /* Auto-scale the number of gangs with the requested number of workers. */ | |
3124 | dims[0] = get_cu_count (kernel->agent) * (32 / dims[1]); | |
3125 | } | |
3126 | else if (dims[0] > 0 && dims[1] == 0) | |
3127 | { | |
3128 | /* Auto-scale the number of workers with the requested number of gangs. */ | |
3129 | dims[1] = get_cu_count (kernel->agent) * 32 / dims[0]; | |
3130 | if (dims[1] == 0) | |
3131 | dims[1] = 1; | |
3132 | if (dims[1] > 16) | |
3133 | dims[1] = 16; | |
3134 | } | |
237957cc AS |
3135 | |
3136 | /* The incoming dimensions are expressed in terms of gangs, workers, and | |
3137 | vectors. The HSA dimensions are expressed in terms of "work-items", | |
3138 | which means multiples of vector lanes. | |
3139 | ||
3140 | The "grid size" specifies the size of the problem space, and the | |
3141 | "work-group size" specifies how much of that we want a single compute | |
3142 | unit to chew on at once. | |
3143 | ||
3144 | The three dimensions do not really correspond to hardware, but the | |
3145 | important thing is that the HSA runtime will launch as many | |
3146 | work-groups as it takes to process the entire grid, and each | |
3147 | work-group will contain as many wave-fronts as it takes to process | |
3148 | the work-items in that group. | |
3149 | ||
3150 | Essentially, as long as we set the Y dimension to 64 (the number of | |
3151 | vector lanes in hardware), and the Z group size to the maximum (16), | |
3152 | then we will get the gangs (X) and workers (Z) launched as we expect. | |
3153 | ||
3154 | The reason for the apparent reversal of vector and worker dimension | |
3155 | order is to do with the way the run-time distributes work-items across | |
3156 | v1 and v2. */ | |
3157 | struct GOMP_kernel_launch_attributes kla = | |
3158 | {3, | |
3159 | /* Grid size. */ | |
3160 | {dims[0], 64, dims[1]}, | |
3161 | /* Work-group size. */ | |
3162 | {1, 64, 16} | |
3163 | }; | |
3164 | ||
3165 | struct goacc_thread *thr = GOMP_PLUGIN_goacc_thread (); | |
3166 | acc_prof_info *prof_info = thr->prof_info; | |
3167 | acc_event_info enqueue_launch_event_info; | |
3168 | acc_api_info *api_info = thr->api_info; | |
3169 | bool profiling_dispatch_p = __builtin_expect (prof_info != NULL, false); | |
3170 | if (profiling_dispatch_p) | |
3171 | { | |
3172 | prof_info->event_type = acc_ev_enqueue_launch_start; | |
3173 | ||
3174 | enqueue_launch_event_info.launch_event.event_type | |
3175 | = prof_info->event_type; | |
3176 | enqueue_launch_event_info.launch_event.valid_bytes | |
3177 | = _ACC_LAUNCH_EVENT_INFO_VALID_BYTES; | |
3178 | enqueue_launch_event_info.launch_event.parent_construct | |
3179 | = acc_construct_parallel; | |
3180 | enqueue_launch_event_info.launch_event.implicit = 1; | |
3181 | enqueue_launch_event_info.launch_event.tool_info = NULL; | |
3182 | enqueue_launch_event_info.launch_event.kernel_name | |
3183 | = (char *) kernel->name; | |
3184 | enqueue_launch_event_info.launch_event.num_gangs = kla.gdims[0]; | |
3185 | enqueue_launch_event_info.launch_event.num_workers = kla.gdims[2]; | |
3186 | enqueue_launch_event_info.launch_event.vector_length = kla.gdims[1]; | |
3187 | ||
3188 | api_info->device_api = acc_device_api_other; | |
3189 | ||
3190 | GOMP_PLUGIN_goacc_profiling_dispatch (prof_info, | |
3191 | &enqueue_launch_event_info, api_info); | |
3192 | } | |
3193 | ||
3194 | if (!async) | |
3195 | { | |
3196 | run_kernel (kernel, ind_da, &kla, NULL, false); | |
3197 | gomp_offload_free (ind_da); | |
3198 | } | |
3199 | else | |
3200 | { | |
3201 | queue_push_launch (aq, kernel, ind_da, &kla); | |
3202 | if (DEBUG_QUEUES) | |
3203 | GCN_DEBUG ("queue_push_callback %d:%d gomp_offload_free, %p\n", | |
3204 | aq->agent->device_id, aq->id, ind_da); | |
3205 | queue_push_callback (aq, gomp_offload_free, ind_da); | |
3206 | } | |
3207 | ||
3208 | if (profiling_dispatch_p) | |
3209 | { | |
3210 | prof_info->event_type = acc_ev_enqueue_launch_end; | |
3211 | enqueue_launch_event_info.launch_event.event_type = prof_info->event_type; | |
3212 | GOMP_PLUGIN_goacc_profiling_dispatch (prof_info, | |
3213 | &enqueue_launch_event_info, | |
3214 | api_info); | |
3215 | } | |
3216 | } | |
3217 | ||
3218 | /* }}} */ | |
3219 | /* {{{ Generic Plugin API */ | |
3220 | ||
3221 | /* Return the name of the accelerator, which is "gcn". */ | |
3222 | ||
3223 | const char * | |
3224 | GOMP_OFFLOAD_get_name (void) | |
3225 | { | |
3226 | return "gcn"; | |
3227 | } | |
3228 | ||
3229 | /* Return the specific capabilities the HSA accelerator have. */ | |
3230 | ||
3231 | unsigned int | |
3232 | GOMP_OFFLOAD_get_caps (void) | |
3233 | { | |
3234 | /* FIXME: Enable shared memory for APU, but not discrete GPU. */ | |
3235 | return /*GOMP_OFFLOAD_CAP_SHARED_MEM |*/ GOMP_OFFLOAD_CAP_OPENMP_400 | |
3236 | | GOMP_OFFLOAD_CAP_OPENACC_200; | |
3237 | } | |
3238 | ||
3239 | /* Identify as GCN accelerator. */ | |
3240 | ||
3241 | int | |
3242 | GOMP_OFFLOAD_get_type (void) | |
3243 | { | |
3244 | return OFFLOAD_TARGET_TYPE_GCN; | |
3245 | } | |
3246 | ||
3247 | /* Return the libgomp version number we're compatible with. There is | |
3248 | no requirement for cross-version compatibility. */ | |
3249 | ||
3250 | unsigned | |
3251 | GOMP_OFFLOAD_version (void) | |
3252 | { | |
3253 | return GOMP_VERSION; | |
3254 | } | |
3255 | ||
3256 | /* Return the number of GCN devices on the system. */ | |
3257 | ||
3258 | int | |
683f1184 | 3259 | GOMP_OFFLOAD_get_num_devices (unsigned int omp_requires_mask) |
237957cc AS |
3260 | { |
3261 | if (!init_hsa_context ()) | |
3262 | return 0; | |
683f1184 TB |
3263 | /* Return -1 if no omp_requires_mask cannot be fulfilled but |
3264 | devices were present. */ | |
3265 | if (hsa_context.agent_count > 0 && omp_requires_mask != 0) | |
3266 | return -1; | |
237957cc AS |
3267 | return hsa_context.agent_count; |
3268 | } | |
3269 | ||
3270 | /* Initialize device (agent) number N so that it can be used for computation. | |
3271 | Return TRUE on success. */ | |
3272 | ||
3273 | bool | |
3274 | GOMP_OFFLOAD_init_device (int n) | |
3275 | { | |
3276 | if (!init_hsa_context ()) | |
3277 | return false; | |
3278 | if (n >= hsa_context.agent_count) | |
3279 | { | |
3280 | GOMP_PLUGIN_error ("Request to initialize non-existent GCN device %i", n); | |
3281 | return false; | |
3282 | } | |
3283 | struct agent_info *agent = &hsa_context.agents[n]; | |
3284 | ||
3285 | if (agent->initialized) | |
3286 | return true; | |
3287 | ||
3288 | agent->device_id = n; | |
3289 | ||
3290 | if (pthread_rwlock_init (&agent->module_rwlock, NULL)) | |
3291 | { | |
3292 | GOMP_PLUGIN_error ("Failed to initialize a GCN agent rwlock"); | |
3293 | return false; | |
3294 | } | |
3295 | if (pthread_mutex_init (&agent->prog_mutex, NULL)) | |
3296 | { | |
3297 | GOMP_PLUGIN_error ("Failed to initialize a GCN agent program mutex"); | |
3298 | return false; | |
3299 | } | |
3300 | if (pthread_mutex_init (&agent->async_queues_mutex, NULL)) | |
3301 | { | |
3302 | GOMP_PLUGIN_error ("Failed to initialize a GCN agent queue mutex"); | |
3303 | return false; | |
3304 | } | |
f6fff8a6 | 3305 | if (pthread_mutex_init (&agent->ephemeral_memories_write_lock, NULL)) |
237957cc AS |
3306 | { |
3307 | GOMP_PLUGIN_error ("Failed to initialize a GCN team arena write mutex"); | |
3308 | return false; | |
3309 | } | |
3310 | agent->async_queues = NULL; | |
3311 | agent->omp_async_queue = NULL; | |
f6fff8a6 | 3312 | agent->ephemeral_memories_list = NULL; |
237957cc AS |
3313 | |
3314 | uint32_t queue_size; | |
3315 | hsa_status_t status; | |
3316 | status = hsa_fns.hsa_agent_get_info_fn (agent->id, | |
3317 | HSA_AGENT_INFO_QUEUE_MAX_SIZE, | |
3318 | &queue_size); | |
3319 | if (status != HSA_STATUS_SUCCESS) | |
3320 | return hsa_error ("Error requesting maximum queue size of the GCN agent", | |
3321 | status); | |
3322 | ||
237957cc | 3323 | status = hsa_fns.hsa_agent_get_info_fn (agent->id, HSA_AGENT_INFO_NAME, |
2e5ea579 | 3324 | &agent->name); |
237957cc AS |
3325 | if (status != HSA_STATUS_SUCCESS) |
3326 | return hsa_error ("Error querying the name of the agent", status); | |
7d593fd6 | 3327 | |
2e5ea579 | 3328 | agent->device_isa = isa_code (agent->name); |
7d593fd6 | 3329 | if (agent->device_isa < 0) |
2e5ea579 FH |
3330 | return hsa_error ("Unknown GCN agent architecture", HSA_STATUS_ERROR); |
3331 | ||
3332 | status = hsa_fns.hsa_agent_get_info_fn (agent->id, HSA_AGENT_INFO_VENDOR_NAME, | |
3333 | &agent->vendor_name); | |
3334 | if (status != HSA_STATUS_SUCCESS) | |
3335 | return hsa_error ("Error querying the vendor name of the agent", status); | |
237957cc AS |
3336 | |
3337 | status = hsa_fns.hsa_queue_create_fn (agent->id, queue_size, | |
3338 | HSA_QUEUE_TYPE_MULTI, | |
3339 | hsa_queue_callback, NULL, UINT32_MAX, | |
3340 | UINT32_MAX, &agent->sync_queue); | |
3341 | if (status != HSA_STATUS_SUCCESS) | |
3342 | return hsa_error ("Error creating command queue", status); | |
3343 | ||
3344 | agent->kernarg_region.handle = (uint64_t) -1; | |
3345 | status = hsa_fns.hsa_agent_iterate_regions_fn (agent->id, | |
3346 | get_kernarg_memory_region, | |
3347 | &agent->kernarg_region); | |
966de09b AS |
3348 | if (status != HSA_STATUS_SUCCESS |
3349 | && status != HSA_STATUS_INFO_BREAK) | |
3350 | hsa_error ("Scanning memory regions failed", status); | |
237957cc AS |
3351 | if (agent->kernarg_region.handle == (uint64_t) -1) |
3352 | { | |
3353 | GOMP_PLUGIN_error ("Could not find suitable memory region for kernel " | |
3354 | "arguments"); | |
3355 | return false; | |
3356 | } | |
3357 | GCN_DEBUG ("Selected kernel arguments memory region:\n"); | |
3358 | dump_hsa_region (agent->kernarg_region, NULL); | |
3359 | ||
3360 | agent->data_region.handle = (uint64_t) -1; | |
3361 | status = hsa_fns.hsa_agent_iterate_regions_fn (agent->id, | |
3362 | get_data_memory_region, | |
3363 | &agent->data_region); | |
966de09b AS |
3364 | if (status != HSA_STATUS_SUCCESS |
3365 | && status != HSA_STATUS_INFO_BREAK) | |
3366 | hsa_error ("Scanning memory regions failed", status); | |
237957cc AS |
3367 | if (agent->data_region.handle == (uint64_t) -1) |
3368 | { | |
3369 | GOMP_PLUGIN_error ("Could not find suitable memory region for device " | |
3370 | "data"); | |
3371 | return false; | |
3372 | } | |
3373 | GCN_DEBUG ("Selected device data memory region:\n"); | |
3374 | dump_hsa_region (agent->data_region, NULL); | |
3375 | ||
3376 | GCN_DEBUG ("GCN agent %d initialized\n", n); | |
3377 | ||
3378 | agent->initialized = true; | |
3379 | return true; | |
3380 | } | |
3381 | ||
3382 | /* Load GCN object-code module described by struct gcn_image_desc in | |
3383 | TARGET_DATA and return references to kernel descriptors in TARGET_TABLE. | |
0fcc0cf9 TB |
3384 | If there are any constructors then run them. If not NULL, REV_FN_TABLE will |
3385 | contain the on-device addresses of the functions for reverse offload. To be | |
3386 | freed by the caller. */ | |
237957cc AS |
3387 | |
3388 | int | |
3389 | GOMP_OFFLOAD_load_image (int ord, unsigned version, const void *target_data, | |
0fcc0cf9 | 3390 | struct addr_pair **target_table, |
dfd75bf7 | 3391 | uint64_t **rev_fn_table) |
237957cc AS |
3392 | { |
3393 | if (GOMP_VERSION_DEV (version) != GOMP_VERSION_GCN) | |
3394 | { | |
3395 | GOMP_PLUGIN_error ("Offload data incompatible with GCN plugin" | |
3396 | " (expected %u, received %u)", | |
3397 | GOMP_VERSION_GCN, GOMP_VERSION_DEV (version)); | |
3398 | return -1; | |
3399 | } | |
3400 | ||
3401 | struct gcn_image_desc *image_desc = (struct gcn_image_desc *) target_data; | |
3402 | struct agent_info *agent; | |
3403 | struct addr_pair *pair; | |
3404 | struct module_info *module; | |
3405 | struct kernel_info *kernel; | |
3406 | int kernel_count = image_desc->kernel_count; | |
3407 | unsigned var_count = image_desc->global_variable_count; | |
9f2fca56 | 3408 | /* Currently, "others" is a struct of ICVS. */ |
0bac793e | 3409 | int other_count = 1; |
237957cc AS |
3410 | |
3411 | agent = get_agent_info (ord); | |
3412 | if (!agent) | |
3413 | return -1; | |
3414 | ||
3415 | if (pthread_rwlock_wrlock (&agent->module_rwlock)) | |
3416 | { | |
3417 | GOMP_PLUGIN_error ("Unable to write-lock a GCN agent rwlock"); | |
3418 | return -1; | |
3419 | } | |
3420 | if (agent->prog_finalized | |
3421 | && !destroy_hsa_program (agent)) | |
3422 | return -1; | |
3423 | ||
3424 | GCN_DEBUG ("Encountered %d kernels in an image\n", kernel_count); | |
3425 | GCN_DEBUG ("Encountered %u global variables in an image\n", var_count); | |
0bac793e CLT |
3426 | GCN_DEBUG ("Expect %d other variables in an image\n", other_count); |
3427 | pair = GOMP_PLUGIN_malloc ((kernel_count + var_count + other_count - 2) | |
237957cc AS |
3428 | * sizeof (struct addr_pair)); |
3429 | *target_table = pair; | |
3430 | module = (struct module_info *) | |
3431 | GOMP_PLUGIN_malloc_cleared (sizeof (struct module_info) | |
3432 | + kernel_count * sizeof (struct kernel_info)); | |
3433 | module->image_desc = image_desc; | |
3434 | module->kernel_count = kernel_count; | |
3435 | module->heap = NULL; | |
3436 | module->constructors_run_p = false; | |
3437 | ||
3438 | kernel = &module->kernels[0]; | |
3439 | ||
3440 | /* Allocate memory for kernel dependencies. */ | |
3441 | for (unsigned i = 0; i < kernel_count; i++) | |
3442 | { | |
3443 | struct hsa_kernel_description *d = &image_desc->kernel_infos[i]; | |
3444 | if (!init_basic_kernel_info (kernel, d, agent, module)) | |
3445 | return -1; | |
3446 | if (strcmp (d->name, "_init_array") == 0) | |
3447 | module->init_array_func = kernel; | |
3448 | else if (strcmp (d->name, "_fini_array") == 0) | |
3449 | module->fini_array_func = kernel; | |
3450 | else | |
3451 | { | |
3452 | pair->start = (uintptr_t) kernel; | |
3453 | pair->end = (uintptr_t) (kernel + 1); | |
3454 | pair++; | |
3455 | } | |
3456 | kernel++; | |
3457 | } | |
3458 | ||
3459 | agent->module = module; | |
3460 | if (pthread_rwlock_unlock (&agent->module_rwlock)) | |
3461 | { | |
3462 | GOMP_PLUGIN_error ("Unable to unlock a GCN agent rwlock"); | |
3463 | return -1; | |
3464 | } | |
3465 | ||
3466 | if (!create_and_finalize_hsa_program (agent)) | |
3467 | return -1; | |
3468 | ||
4a87a8e4 | 3469 | if (var_count > 0) |
237957cc | 3470 | { |
237957cc AS |
3471 | hsa_status_t status; |
3472 | hsa_executable_symbol_t var_symbol; | |
3473 | status = hsa_fns.hsa_executable_get_symbol_fn (agent->executable, NULL, | |
4a87a8e4 AS |
3474 | ".offload_var_table", |
3475 | agent->id, | |
237957cc AS |
3476 | 0, &var_symbol); |
3477 | ||
3478 | if (status != HSA_STATUS_SUCCESS) | |
3479 | hsa_fatal ("Could not find symbol for variable in the code object", | |
3480 | status); | |
3481 | ||
4a87a8e4 | 3482 | uint64_t var_table_addr; |
237957cc | 3483 | status = hsa_fns.hsa_executable_symbol_get_info_fn |
4a87a8e4 AS |
3484 | (var_symbol, HSA_EXECUTABLE_SYMBOL_INFO_VARIABLE_ADDRESS, |
3485 | &var_table_addr); | |
237957cc AS |
3486 | if (status != HSA_STATUS_SUCCESS) |
3487 | hsa_fatal ("Could not extract a variable from its symbol", status); | |
237957cc | 3488 | |
4a87a8e4 AS |
3489 | struct { |
3490 | uint64_t addr; | |
3491 | uint64_t size; | |
3492 | } var_table[var_count]; | |
3493 | GOMP_OFFLOAD_dev2host (agent->device_id, var_table, | |
3494 | (void*)var_table_addr, sizeof (var_table)); | |
3495 | ||
3496 | for (unsigned i = 0; i < var_count; i++) | |
3497 | { | |
3498 | pair->start = var_table[i].addr; | |
3499 | pair->end = var_table[i].addr + var_table[i].size; | |
3500 | GCN_DEBUG ("Found variable at %p with size %lu\n", | |
3501 | (void *)var_table[i].addr, var_table[i].size); | |
3502 | pair++; | |
3503 | } | |
237957cc AS |
3504 | } |
3505 | ||
9f2fca56 | 3506 | GCN_DEBUG ("Looking for variable %s\n", XSTRING (GOMP_ADDITIONAL_ICVS)); |
0bac793e CLT |
3507 | |
3508 | hsa_status_t status; | |
3509 | hsa_executable_symbol_t var_symbol; | |
3510 | status = hsa_fns.hsa_executable_get_symbol_fn (agent->executable, NULL, | |
9f2fca56 | 3511 | XSTRING (GOMP_ADDITIONAL_ICVS), |
0bac793e CLT |
3512 | agent->id, 0, &var_symbol); |
3513 | if (status == HSA_STATUS_SUCCESS) | |
3514 | { | |
9f2fca56 MV |
3515 | uint64_t varptr; |
3516 | uint32_t varsize; | |
0bac793e CLT |
3517 | |
3518 | status = hsa_fns.hsa_executable_symbol_get_info_fn | |
3519 | (var_symbol, HSA_EXECUTABLE_SYMBOL_INFO_VARIABLE_ADDRESS, | |
9f2fca56 | 3520 | &varptr); |
0bac793e CLT |
3521 | if (status != HSA_STATUS_SUCCESS) |
3522 | hsa_fatal ("Could not extract a variable from its symbol", status); | |
3523 | status = hsa_fns.hsa_executable_symbol_get_info_fn | |
3524 | (var_symbol, HSA_EXECUTABLE_SYMBOL_INFO_VARIABLE_SIZE, | |
9f2fca56 | 3525 | &varsize); |
0bac793e | 3526 | if (status != HSA_STATUS_SUCCESS) |
9f2fca56 MV |
3527 | hsa_fatal ("Could not extract a variable size from its symbol", |
3528 | status); | |
0bac793e | 3529 | |
9f2fca56 MV |
3530 | pair->start = varptr; |
3531 | pair->end = varptr + varsize; | |
0bac793e CLT |
3532 | } |
3533 | else | |
9f2fca56 MV |
3534 | { |
3535 | /* The variable was not in this image. */ | |
3536 | GCN_DEBUG ("Variable not found in image: %s\n", | |
3537 | XSTRING (GOMP_ADDITIONAL_ICVS)); | |
3538 | pair->start = pair->end = 0; | |
3539 | } | |
0bac793e | 3540 | |
237957cc AS |
3541 | /* Ensure that constructors are run first. */ |
3542 | struct GOMP_kernel_launch_attributes kla = | |
3543 | { 3, | |
3544 | /* Grid size. */ | |
3545 | { 1, 64, 1 }, | |
3546 | /* Work-group size. */ | |
3547 | { 1, 64, 1 } | |
3548 | }; | |
3549 | ||
3550 | if (module->init_array_func) | |
3551 | { | |
3552 | init_kernel (module->init_array_func); | |
3553 | run_kernel (module->init_array_func, NULL, &kla, NULL, false); | |
3554 | } | |
3555 | module->constructors_run_p = true; | |
3556 | ||
3557 | /* Don't report kernels that libgomp need not know about. */ | |
3558 | if (module->init_array_func) | |
3559 | kernel_count--; | |
3560 | if (module->fini_array_func) | |
3561 | kernel_count--; | |
3562 | ||
dfd75bf7 TB |
3563 | if (rev_fn_table != NULL && kernel_count == 0) |
3564 | *rev_fn_table = NULL; | |
3565 | else if (rev_fn_table != NULL) | |
3566 | { | |
3567 | hsa_status_t status; | |
3568 | hsa_executable_symbol_t var_symbol; | |
3569 | status = hsa_fns.hsa_executable_get_symbol_fn (agent->executable, NULL, | |
3570 | ".offload_func_table", | |
3571 | agent->id, 0, &var_symbol); | |
3572 | if (status != HSA_STATUS_SUCCESS) | |
3573 | hsa_fatal ("Could not find symbol for variable in the code object", | |
3574 | status); | |
3575 | uint64_t fn_table_addr; | |
3576 | status = hsa_fns.hsa_executable_symbol_get_info_fn | |
3577 | (var_symbol, HSA_EXECUTABLE_SYMBOL_INFO_VARIABLE_ADDRESS, | |
3578 | &fn_table_addr); | |
3579 | if (status != HSA_STATUS_SUCCESS) | |
3580 | hsa_fatal ("Could not extract a variable from its symbol", status); | |
3581 | *rev_fn_table = GOMP_PLUGIN_malloc (kernel_count * sizeof (uint64_t)); | |
3582 | GOMP_OFFLOAD_dev2host (agent->device_id, *rev_fn_table, | |
3583 | (void*) fn_table_addr, | |
3584 | kernel_count * sizeof (uint64_t)); | |
3585 | } | |
3586 | ||
0bac793e | 3587 | return kernel_count + var_count + other_count; |
237957cc AS |
3588 | } |
3589 | ||
3590 | /* Unload GCN object-code module described by struct gcn_image_desc in | |
3591 | TARGET_DATA from agent number N. Return TRUE on success. */ | |
3592 | ||
3593 | bool | |
3594 | GOMP_OFFLOAD_unload_image (int n, unsigned version, const void *target_data) | |
3595 | { | |
3596 | if (GOMP_VERSION_DEV (version) != GOMP_VERSION_GCN) | |
3597 | { | |
3598 | GOMP_PLUGIN_error ("Offload data incompatible with GCN plugin" | |
3599 | " (expected %u, received %u)", | |
3600 | GOMP_VERSION_GCN, GOMP_VERSION_DEV (version)); | |
3601 | return false; | |
3602 | } | |
3603 | ||
3604 | struct agent_info *agent; | |
3605 | agent = get_agent_info (n); | |
3606 | if (!agent) | |
3607 | return false; | |
3608 | ||
3609 | if (pthread_rwlock_wrlock (&agent->module_rwlock)) | |
3610 | { | |
3611 | GOMP_PLUGIN_error ("Unable to write-lock a GCN agent rwlock"); | |
3612 | return false; | |
3613 | } | |
3614 | ||
3615 | if (!agent->module || agent->module->image_desc != target_data) | |
3616 | { | |
3617 | GOMP_PLUGIN_error ("Attempt to unload an image that has never been " | |
3618 | "loaded before"); | |
3619 | return false; | |
3620 | } | |
3621 | ||
3622 | if (!destroy_module (agent->module, true)) | |
3623 | return false; | |
3624 | free (agent->module); | |
3625 | agent->module = NULL; | |
3626 | if (!destroy_hsa_program (agent)) | |
3627 | return false; | |
3628 | if (pthread_rwlock_unlock (&agent->module_rwlock)) | |
3629 | { | |
3630 | GOMP_PLUGIN_error ("Unable to unlock a GCN agent rwlock"); | |
3631 | return false; | |
3632 | } | |
3633 | return true; | |
3634 | } | |
3635 | ||
3636 | /* Deinitialize all information and status associated with agent number N. We | |
3637 | do not attempt any synchronization, assuming the user and libgomp will not | |
3638 | attempt deinitialization of a device that is in any way being used at the | |
3639 | same time. Return TRUE on success. */ | |
3640 | ||
3641 | bool | |
3642 | GOMP_OFFLOAD_fini_device (int n) | |
3643 | { | |
3644 | struct agent_info *agent = get_agent_info (n); | |
3645 | if (!agent) | |
3646 | return false; | |
3647 | ||
3648 | if (!agent->initialized) | |
3649 | return true; | |
3650 | ||
3651 | if (agent->omp_async_queue) | |
3652 | { | |
3653 | GOMP_OFFLOAD_openacc_async_destruct (agent->omp_async_queue); | |
3654 | agent->omp_async_queue = NULL; | |
3655 | } | |
3656 | ||
3657 | if (agent->module) | |
3658 | { | |
3659 | if (!destroy_module (agent->module, false)) | |
3660 | return false; | |
3661 | free (agent->module); | |
3662 | agent->module = NULL; | |
3663 | } | |
3664 | ||
f6fff8a6 | 3665 | if (!destroy_ephemeral_memories (agent)) |
237957cc AS |
3666 | return false; |
3667 | ||
3668 | if (!destroy_hsa_program (agent)) | |
3669 | return false; | |
3670 | ||
3671 | hsa_status_t status = hsa_fns.hsa_queue_destroy_fn (agent->sync_queue); | |
3672 | if (status != HSA_STATUS_SUCCESS) | |
3673 | return hsa_error ("Error destroying command queue", status); | |
3674 | ||
3675 | if (pthread_mutex_destroy (&agent->prog_mutex)) | |
3676 | { | |
3677 | GOMP_PLUGIN_error ("Failed to destroy a GCN agent program mutex"); | |
3678 | return false; | |
3679 | } | |
3680 | if (pthread_rwlock_destroy (&agent->module_rwlock)) | |
3681 | { | |
3682 | GOMP_PLUGIN_error ("Failed to destroy a GCN agent rwlock"); | |
3683 | return false; | |
3684 | } | |
3685 | ||
3686 | if (pthread_mutex_destroy (&agent->async_queues_mutex)) | |
3687 | { | |
3688 | GOMP_PLUGIN_error ("Failed to destroy a GCN agent queue mutex"); | |
3689 | return false; | |
3690 | } | |
f6fff8a6 | 3691 | if (pthread_mutex_destroy (&agent->ephemeral_memories_write_lock)) |
237957cc | 3692 | { |
f6fff8a6 | 3693 | GOMP_PLUGIN_error ("Failed to destroy a GCN memory mutex"); |
237957cc AS |
3694 | return false; |
3695 | } | |
3696 | agent->initialized = false; | |
3697 | return true; | |
3698 | } | |
3699 | ||
3700 | /* Return true if the HSA runtime can run function FN_PTR. */ | |
3701 | ||
3702 | bool | |
3703 | GOMP_OFFLOAD_can_run (void *fn_ptr) | |
3704 | { | |
3705 | struct kernel_info *kernel = (struct kernel_info *) fn_ptr; | |
3706 | ||
3707 | init_kernel (kernel); | |
3708 | if (kernel->initialization_failed) | |
3709 | goto failure; | |
3710 | ||
3711 | return true; | |
3712 | ||
3713 | failure: | |
3714 | if (suppress_host_fallback) | |
3715 | GOMP_PLUGIN_fatal ("GCN host fallback has been suppressed"); | |
3716 | GCN_WARNING ("GCN target cannot be launched, doing a host fallback\n"); | |
3717 | return false; | |
3718 | } | |
3719 | ||
3720 | /* Allocate memory on device N. */ | |
3721 | ||
3722 | void * | |
3723 | GOMP_OFFLOAD_alloc (int n, size_t size) | |
3724 | { | |
3725 | struct agent_info *agent = get_agent_info (n); | |
3726 | return alloc_by_agent (agent, size); | |
3727 | } | |
3728 | ||
3729 | /* Free memory from device N. */ | |
3730 | ||
3731 | bool | |
3732 | GOMP_OFFLOAD_free (int device, void *ptr) | |
3733 | { | |
3734 | GCN_DEBUG ("Freeing memory on device %d\n", device); | |
3735 | ||
3736 | hsa_status_t status = hsa_fns.hsa_memory_free_fn (ptr); | |
3737 | if (status != HSA_STATUS_SUCCESS) | |
3738 | { | |
3739 | hsa_error ("Could not free device memory", status); | |
3740 | return false; | |
3741 | } | |
3742 | ||
3743 | struct goacc_thread *thr = GOMP_PLUGIN_goacc_thread (); | |
3744 | bool profiling_dispatch_p | |
3745 | = __builtin_expect (thr != NULL && thr->prof_info != NULL, false); | |
3746 | if (profiling_dispatch_p) | |
3747 | { | |
3748 | acc_prof_info *prof_info = thr->prof_info; | |
3749 | acc_event_info data_event_info; | |
3750 | acc_api_info *api_info = thr->api_info; | |
3751 | ||
3752 | prof_info->event_type = acc_ev_free; | |
3753 | ||
3754 | data_event_info.data_event.event_type = prof_info->event_type; | |
3755 | data_event_info.data_event.valid_bytes | |
3756 | = _ACC_DATA_EVENT_INFO_VALID_BYTES; | |
3757 | data_event_info.data_event.parent_construct | |
3758 | = acc_construct_parallel; | |
3759 | data_event_info.data_event.implicit = 1; | |
3760 | data_event_info.data_event.tool_info = NULL; | |
3761 | data_event_info.data_event.var_name = NULL; | |
3762 | data_event_info.data_event.bytes = 0; | |
3763 | data_event_info.data_event.host_ptr = NULL; | |
3764 | data_event_info.data_event.device_ptr = (void *) ptr; | |
3765 | ||
3766 | api_info->device_api = acc_device_api_other; | |
3767 | ||
3768 | GOMP_PLUGIN_goacc_profiling_dispatch (prof_info, &data_event_info, | |
3769 | api_info); | |
3770 | } | |
3771 | ||
3772 | return true; | |
3773 | } | |
3774 | ||
3775 | /* Copy data from DEVICE to host. */ | |
3776 | ||
3777 | bool | |
3778 | GOMP_OFFLOAD_dev2host (int device, void *dst, const void *src, size_t n) | |
3779 | { | |
3780 | GCN_DEBUG ("Copying %zu bytes from device %d (%p) to host (%p)\n", n, device, | |
3781 | src, dst); | |
8d2f4ddf JB |
3782 | hsa_status_t status = hsa_fns.hsa_memory_copy_fn (dst, src, n); |
3783 | if (status != HSA_STATUS_SUCCESS) | |
3784 | GOMP_PLUGIN_error ("memory copy failed"); | |
237957cc AS |
3785 | return true; |
3786 | } | |
3787 | ||
3788 | /* Copy data from host to DEVICE. */ | |
3789 | ||
3790 | bool | |
3791 | GOMP_OFFLOAD_host2dev (int device, void *dst, const void *src, size_t n) | |
3792 | { | |
3793 | GCN_DEBUG ("Copying %zu bytes from host (%p) to device %d (%p)\n", n, src, | |
3794 | device, dst); | |
8d2f4ddf | 3795 | hsa_memory_copy_wrapper (dst, src, n); |
237957cc AS |
3796 | return true; |
3797 | } | |
3798 | ||
3799 | /* Copy data within DEVICE. Do the copy asynchronously, if appropriate. */ | |
3800 | ||
3801 | bool | |
3802 | GOMP_OFFLOAD_dev2dev (int device, void *dst, const void *src, size_t n) | |
3803 | { | |
3804 | struct gcn_thread *thread_data = gcn_thread (); | |
3805 | ||
3806 | if (thread_data && !async_synchronous_p (thread_data->async)) | |
3807 | { | |
3808 | struct agent_info *agent = get_agent_info (device); | |
3809 | maybe_init_omp_async (agent); | |
9c41f5b9 | 3810 | queue_push_copy (agent->omp_async_queue, dst, src, n); |
237957cc AS |
3811 | return true; |
3812 | } | |
3813 | ||
3814 | GCN_DEBUG ("Copying %zu bytes from device %d (%p) to device %d (%p)\n", n, | |
3815 | device, src, device, dst); | |
8d2f4ddf JB |
3816 | hsa_status_t status = hsa_fns.hsa_memory_copy_fn (dst, src, n); |
3817 | if (status != HSA_STATUS_SUCCESS) | |
3818 | GOMP_PLUGIN_error ("memory copy failed"); | |
237957cc AS |
3819 | return true; |
3820 | } | |
3821 | ||
3822 | /* }}} */ | |
3823 | /* {{{ OpenMP Plugin API */ | |
3824 | ||
3825 | /* Run a synchronous OpenMP kernel on DEVICE and pass it an array of pointers | |
3826 | in VARS as a parameter. The kernel is identified by FN_PTR which must point | |
3827 | to a kernel_info structure, and must have previously been loaded to the | |
3828 | specified device. */ | |
3829 | ||
3830 | void | |
3831 | GOMP_OFFLOAD_run (int device, void *fn_ptr, void *vars, void **args) | |
3832 | { | |
3833 | struct agent_info *agent = get_agent_info (device); | |
3834 | struct kernel_info *kernel = (struct kernel_info *) fn_ptr; | |
3835 | struct GOMP_kernel_launch_attributes def; | |
3836 | struct GOMP_kernel_launch_attributes *kla; | |
3837 | assert (agent == kernel->agent); | |
3838 | ||
3839 | /* If we get here then the kernel must be OpenMP. */ | |
3840 | kernel->kind = KIND_OPENMP; | |
3841 | ||
3842 | if (!parse_target_attributes (args, &def, &kla, agent)) | |
3843 | { | |
3844 | GCN_WARNING ("Will not run GCN kernel because the grid size is zero\n"); | |
3845 | return; | |
3846 | } | |
3847 | run_kernel (kernel, vars, kla, NULL, false); | |
3848 | } | |
3849 | ||
3850 | /* Run an asynchronous OpenMP kernel on DEVICE. This is similar to | |
3851 | GOMP_OFFLOAD_run except that the launch is queued and there is a call to | |
3852 | GOMP_PLUGIN_target_task_completion when it has finished. */ | |
3853 | ||
3854 | void | |
3855 | GOMP_OFFLOAD_async_run (int device, void *tgt_fn, void *tgt_vars, | |
3856 | void **args, void *async_data) | |
3857 | { | |
3858 | GCN_DEBUG ("GOMP_OFFLOAD_async_run invoked\n"); | |
3859 | struct agent_info *agent = get_agent_info (device); | |
3860 | struct kernel_info *kernel = (struct kernel_info *) tgt_fn; | |
3861 | struct GOMP_kernel_launch_attributes def; | |
3862 | struct GOMP_kernel_launch_attributes *kla; | |
3863 | assert (agent == kernel->agent); | |
3864 | ||
3865 | /* If we get here then the kernel must be OpenMP. */ | |
3866 | kernel->kind = KIND_OPENMP; | |
3867 | ||
3868 | if (!parse_target_attributes (args, &def, &kla, agent)) | |
3869 | { | |
3870 | GCN_WARNING ("Will not run GCN kernel because the grid size is zero\n"); | |
3871 | return; | |
3872 | } | |
3873 | ||
3874 | maybe_init_omp_async (agent); | |
3875 | queue_push_launch (agent->omp_async_queue, kernel, tgt_vars, kla); | |
3876 | queue_push_callback (agent->omp_async_queue, | |
3877 | GOMP_PLUGIN_target_task_completion, async_data); | |
3878 | } | |
3879 | ||
3880 | /* }}} */ | |
3881 | /* {{{ OpenACC Plugin API */ | |
3882 | ||
3883 | /* Run a synchronous OpenACC kernel. The device number is inferred from the | |
3884 | already-loaded KERNEL. */ | |
3885 | ||
3886 | void | |
3887 | GOMP_OFFLOAD_openacc_exec (void (*fn_ptr) (void *), size_t mapnum, | |
3888 | void **hostaddrs, void **devaddrs, unsigned *dims, | |
3889 | void *targ_mem_desc) | |
3890 | { | |
3891 | struct kernel_info *kernel = (struct kernel_info *) fn_ptr; | |
3892 | ||
3893 | gcn_exec (kernel, mapnum, hostaddrs, devaddrs, dims, targ_mem_desc, false, | |
3894 | NULL); | |
3895 | } | |
3896 | ||
3897 | /* Run an asynchronous OpenACC kernel on the specified queue. */ | |
3898 | ||
3899 | void | |
3900 | GOMP_OFFLOAD_openacc_async_exec (void (*fn_ptr) (void *), size_t mapnum, | |
3901 | void **hostaddrs, void **devaddrs, | |
3902 | unsigned *dims, void *targ_mem_desc, | |
3903 | struct goacc_asyncqueue *aq) | |
3904 | { | |
3905 | struct kernel_info *kernel = (struct kernel_info *) fn_ptr; | |
3906 | ||
3907 | gcn_exec (kernel, mapnum, hostaddrs, devaddrs, dims, targ_mem_desc, true, | |
3908 | aq); | |
3909 | } | |
3910 | ||
3911 | /* Create a new asynchronous thread and queue for running future kernels. */ | |
3912 | ||
3913 | struct goacc_asyncqueue * | |
3914 | GOMP_OFFLOAD_openacc_async_construct (int device) | |
3915 | { | |
3916 | struct agent_info *agent = get_agent_info (device); | |
3917 | ||
3918 | pthread_mutex_lock (&agent->async_queues_mutex); | |
3919 | ||
3920 | struct goacc_asyncqueue *aq = GOMP_PLUGIN_malloc (sizeof (*aq)); | |
3921 | aq->agent = get_agent_info (device); | |
3922 | aq->prev = NULL; | |
3923 | aq->next = agent->async_queues; | |
3924 | if (aq->next) | |
3925 | { | |
3926 | aq->next->prev = aq; | |
3927 | aq->id = aq->next->id + 1; | |
3928 | } | |
3929 | else | |
3930 | aq->id = 1; | |
3931 | agent->async_queues = aq; | |
3932 | ||
3933 | aq->queue_first = 0; | |
3934 | aq->queue_n = 0; | |
3935 | aq->drain_queue_stop = 0; | |
3936 | ||
3937 | if (pthread_mutex_init (&aq->mutex, NULL)) | |
3938 | { | |
3939 | GOMP_PLUGIN_error ("Failed to initialize a GCN agent queue mutex"); | |
3940 | return false; | |
3941 | } | |
3942 | if (pthread_cond_init (&aq->queue_cond_in, NULL)) | |
3943 | { | |
3944 | GOMP_PLUGIN_error ("Failed to initialize a GCN agent queue cond"); | |
3945 | return false; | |
3946 | } | |
3947 | if (pthread_cond_init (&aq->queue_cond_out, NULL)) | |
3948 | { | |
3949 | GOMP_PLUGIN_error ("Failed to initialize a GCN agent queue cond"); | |
3950 | return false; | |
3951 | } | |
3952 | ||
3953 | hsa_status_t status = hsa_fns.hsa_queue_create_fn (agent->id, | |
3954 | ASYNC_QUEUE_SIZE, | |
3955 | HSA_QUEUE_TYPE_MULTI, | |
3956 | hsa_queue_callback, NULL, | |
3957 | UINT32_MAX, UINT32_MAX, | |
3958 | &aq->hsa_queue); | |
3959 | if (status != HSA_STATUS_SUCCESS) | |
3960 | hsa_fatal ("Error creating command queue", status); | |
3961 | ||
3962 | int err = pthread_create (&aq->thread_drain_queue, NULL, &drain_queue, aq); | |
3963 | if (err != 0) | |
3964 | GOMP_PLUGIN_fatal ("GCN asynchronous thread creation failed: %s", | |
3965 | strerror (err)); | |
3966 | GCN_DEBUG ("Async thread %d:%d: created\n", aq->agent->device_id, | |
3967 | aq->id); | |
3968 | ||
3969 | pthread_mutex_unlock (&agent->async_queues_mutex); | |
3970 | ||
3971 | return aq; | |
3972 | } | |
3973 | ||
93d90219 | 3974 | /* Destroy an existing asynchronous thread and queue. Waits for any |
237957cc AS |
3975 | currently-running task to complete, but cancels any queued tasks. */ |
3976 | ||
3977 | bool | |
3978 | GOMP_OFFLOAD_openacc_async_destruct (struct goacc_asyncqueue *aq) | |
3979 | { | |
3980 | struct agent_info *agent = aq->agent; | |
3981 | ||
3982 | finalize_async_thread (aq); | |
3983 | ||
3984 | pthread_mutex_lock (&agent->async_queues_mutex); | |
3985 | ||
3986 | int err; | |
3987 | if ((err = pthread_mutex_destroy (&aq->mutex))) | |
3988 | { | |
3989 | GOMP_PLUGIN_error ("Failed to destroy a GCN async queue mutex: %d", err); | |
3990 | goto fail; | |
3991 | } | |
3992 | if (pthread_cond_destroy (&aq->queue_cond_in)) | |
3993 | { | |
3994 | GOMP_PLUGIN_error ("Failed to destroy a GCN async queue cond"); | |
3995 | goto fail; | |
3996 | } | |
3997 | if (pthread_cond_destroy (&aq->queue_cond_out)) | |
3998 | { | |
3999 | GOMP_PLUGIN_error ("Failed to destroy a GCN async queue cond"); | |
4000 | goto fail; | |
4001 | } | |
4002 | hsa_status_t status = hsa_fns.hsa_queue_destroy_fn (aq->hsa_queue); | |
4003 | if (status != HSA_STATUS_SUCCESS) | |
4004 | { | |
4005 | hsa_error ("Error destroying command queue", status); | |
4006 | goto fail; | |
4007 | } | |
4008 | ||
4009 | if (aq->prev) | |
4010 | aq->prev->next = aq->next; | |
4011 | if (aq->next) | |
4012 | aq->next->prev = aq->prev; | |
4013 | if (agent->async_queues == aq) | |
4014 | agent->async_queues = aq->next; | |
4015 | ||
4016 | GCN_DEBUG ("Async thread %d:%d: destroyed\n", agent->device_id, aq->id); | |
4017 | ||
4018 | free (aq); | |
4019 | pthread_mutex_unlock (&agent->async_queues_mutex); | |
4020 | return true; | |
4021 | ||
4022 | fail: | |
4023 | pthread_mutex_unlock (&agent->async_queues_mutex); | |
4024 | return false; | |
4025 | } | |
4026 | ||
4027 | /* Return true if the specified async queue is currently empty. */ | |
4028 | ||
4029 | int | |
4030 | GOMP_OFFLOAD_openacc_async_test (struct goacc_asyncqueue *aq) | |
4031 | { | |
4032 | return queue_empty (aq); | |
4033 | } | |
4034 | ||
4035 | /* Block until the specified queue has executed all its tasks and the | |
4036 | queue is empty. */ | |
4037 | ||
4038 | bool | |
4039 | GOMP_OFFLOAD_openacc_async_synchronize (struct goacc_asyncqueue *aq) | |
4040 | { | |
4041 | wait_queue (aq); | |
4042 | return true; | |
4043 | } | |
4044 | ||
4045 | /* Add a serialization point across two async queues. Any new tasks added to | |
4046 | AQ2, after this call, will not run until all tasks on AQ1, at the time | |
4047 | of this call, have completed. */ | |
4048 | ||
4049 | bool | |
4050 | GOMP_OFFLOAD_openacc_async_serialize (struct goacc_asyncqueue *aq1, | |
4051 | struct goacc_asyncqueue *aq2) | |
4052 | { | |
4053 | /* For serialize, stream aq2 waits for aq1 to complete work that has been | |
4054 | scheduled to run on it up to this point. */ | |
4055 | if (aq1 != aq2) | |
4056 | { | |
4057 | struct placeholder *placeholderp = queue_push_placeholder (aq1); | |
4058 | queue_push_asyncwait (aq2, placeholderp); | |
4059 | } | |
4060 | return true; | |
4061 | } | |
4062 | ||
4063 | /* Add an opaque callback to the given async queue. */ | |
4064 | ||
4065 | void | |
4066 | GOMP_OFFLOAD_openacc_async_queue_callback (struct goacc_asyncqueue *aq, | |
4067 | void (*fn) (void *), void *data) | |
4068 | { | |
4069 | queue_push_callback (aq, fn, data); | |
4070 | } | |
4071 | ||
4072 | /* Queue up an asynchronous data copy from host to DEVICE. */ | |
4073 | ||
4074 | bool | |
4075 | GOMP_OFFLOAD_openacc_async_host2dev (int device, void *dst, const void *src, | |
4076 | size_t n, struct goacc_asyncqueue *aq) | |
4077 | { | |
4078 | struct agent_info *agent = get_agent_info (device); | |
4079 | assert (agent == aq->agent); | |
9c41f5b9 | 4080 | queue_push_copy (aq, dst, src, n); |
237957cc AS |
4081 | return true; |
4082 | } | |
4083 | ||
4084 | /* Queue up an asynchronous data copy from DEVICE to host. */ | |
4085 | ||
4086 | bool | |
4087 | GOMP_OFFLOAD_openacc_async_dev2host (int device, void *dst, const void *src, | |
4088 | size_t n, struct goacc_asyncqueue *aq) | |
4089 | { | |
4090 | struct agent_info *agent = get_agent_info (device); | |
4091 | assert (agent == aq->agent); | |
9c41f5b9 | 4092 | queue_push_copy (aq, dst, src, n); |
237957cc AS |
4093 | return true; |
4094 | } | |
4095 | ||
6fc0385c TS |
4096 | union goacc_property_value |
4097 | GOMP_OFFLOAD_openacc_get_property (int device, enum goacc_property prop) | |
4098 | { | |
2e5ea579 FH |
4099 | struct agent_info *agent = get_agent_info (device); |
4100 | ||
4101 | union goacc_property_value propval = { .val = 0 }; | |
4102 | ||
4103 | switch (prop) | |
4104 | { | |
4105 | case GOACC_PROPERTY_FREE_MEMORY: | |
4106 | /* Not supported. */ | |
4107 | break; | |
4108 | case GOACC_PROPERTY_MEMORY: | |
4109 | { | |
4110 | size_t size; | |
4111 | hsa_region_t region = agent->data_region; | |
4112 | hsa_status_t status = | |
4113 | hsa_fns.hsa_region_get_info_fn (region, HSA_REGION_INFO_SIZE, &size); | |
4114 | if (status == HSA_STATUS_SUCCESS) | |
4115 | propval.val = size; | |
4116 | break; | |
4117 | } | |
4118 | case GOACC_PROPERTY_NAME: | |
4119 | propval.ptr = agent->name; | |
4120 | break; | |
4121 | case GOACC_PROPERTY_VENDOR: | |
4122 | propval.ptr = agent->vendor_name; | |
4123 | break; | |
4124 | case GOACC_PROPERTY_DRIVER: | |
4125 | propval.ptr = hsa_context.driver_version_s; | |
4126 | break; | |
4127 | } | |
6fc0385c | 4128 | |
2e5ea579 | 4129 | return propval; |
6fc0385c TS |
4130 | } |
4131 | ||
237957cc AS |
4132 | /* Set up plugin-specific thread-local-data (host-side). */ |
4133 | ||
4134 | void * | |
4135 | GOMP_OFFLOAD_openacc_create_thread_data (int ord __attribute__((unused))) | |
4136 | { | |
4137 | struct gcn_thread *thread_data | |
4138 | = GOMP_PLUGIN_malloc (sizeof (struct gcn_thread)); | |
4139 | ||
4140 | thread_data->async = GOMP_ASYNC_SYNC; | |
4141 | ||
4142 | return (void *) thread_data; | |
4143 | } | |
4144 | ||
4145 | /* Clean up plugin-specific thread-local-data. */ | |
4146 | ||
4147 | void | |
4148 | GOMP_OFFLOAD_openacc_destroy_thread_data (void *data) | |
4149 | { | |
4150 | free (data); | |
4151 | } | |
4152 | ||
4153 | /* }}} */ |