2 * Copyright 2014 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
27 * Declare public libdrm_amdgpu API
29 * This file define API exposed by libdrm_amdgpu library.
30 * User wanted to use libdrm_amdgpu functionality must include
40 struct drm_amdgpu_info_hw_ip;
42 /*--------------------------------------------------------------------------*/
43 /* --------------------------- Defines ------------------------------------ */
44 /*--------------------------------------------------------------------------*/
47 * Define max. number of Command Buffers (IB) which could be sent to the single
48 * hardware IP to accommodate CE/DE requirements
50 * \sa amdgpu_cs_ib_info
52 #define AMDGPU_CS_MAX_IBS_PER_SUBMIT 4
55 * Special timeout value meaning that the timeout is infinite.
57 #define AMDGPU_TIMEOUT_INFINITE 0xffffffffffffffffull
60 * Used in amdgpu_cs_query_fence_status(), meaning that the given timeout
63 #define AMDGPU_QUERY_FENCE_TIMEOUT_IS_ABSOLUTE (1 << 0)
65 /*--------------------------------------------------------------------------*/
66 /* ----------------------------- Enums ------------------------------------ */
67 /*--------------------------------------------------------------------------*/
70 * Enum describing possible handle types
72 * \sa amdgpu_bo_import, amdgpu_bo_export
75 enum amdgpu_bo_handle_type {
76 /** GEM flink name (needs DRM authentication, used by DRI2) */
77 amdgpu_bo_handle_type_gem_flink_name = 0,
79 /** KMS handle which is used by all driver ioctls */
80 amdgpu_bo_handle_type_kms = 1,
82 /** DMA-buf fd handle */
83 amdgpu_bo_handle_type_dma_buf_fd = 2
86 /** Define known types of GPU VM VA ranges */
87 enum amdgpu_gpu_va_range
89 /** Allocate from "normal"/general range */
90 amdgpu_gpu_va_range_general = 0
93 /*--------------------------------------------------------------------------*/
94 /* -------------------------- Datatypes ----------------------------------- */
95 /*--------------------------------------------------------------------------*/
98 * Define opaque pointer to context associated with fd.
99 * This context will be returned as the result of
100 * "initialize" function and should be pass as the first
101 * parameter to any API call
103 typedef struct amdgpu_device *amdgpu_device_handle;
106 * Define GPU Context type as pointer to opaque structure
107 * Example of GPU Context is the "rendering" context associated
108 * with OpenGL context (glCreateContext)
110 typedef struct amdgpu_context *amdgpu_context_handle;
113 * Define handle for amdgpu resources: buffer, GDS, etc.
115 typedef struct amdgpu_bo *amdgpu_bo_handle;
118 * Define handle for list of BOs
120 typedef struct amdgpu_bo_list *amdgpu_bo_list_handle;
123 * Define handle to be used to work with VA allocated ranges
125 typedef struct amdgpu_va *amdgpu_va_handle;
127 /*--------------------------------------------------------------------------*/
128 /* -------------------------- Structures ---------------------------------- */
129 /*--------------------------------------------------------------------------*/
132 * Structure describing memory allocation request
134 * \sa amdgpu_bo_alloc()
137 struct amdgpu_bo_alloc_request {
138 /** Allocation request. It must be aligned correctly. */
142 * It may be required to have some specific alignment requirements
143 * for physical back-up storage (e.g. for displayable surface).
144 * If 0 there is no special alignment requirement
146 uint64_t phys_alignment;
149 * UMD should specify where to allocate memory and how it
150 * will be accessed by the CPU.
152 uint32_t preferred_heap;
154 /** Additional flags passed on allocation */
159 * Structure describing memory allocation request
161 * \sa amdgpu_bo_alloc()
163 struct amdgpu_bo_alloc_result {
164 /** Assigned virtual MC Base Address */
165 uint64_t virtual_mc_base_address;
167 /** Handle of allocated memory to be used by the given process only. */
168 amdgpu_bo_handle buf_handle;
172 * Special UMD specific information associated with buffer.
174 * It may be need to pass some buffer charactersitic as part
175 * of buffer sharing. Such information are defined UMD and
176 * opaque for libdrm_amdgpu as well for kernel driver.
178 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_query_info,
179 * amdgpu_bo_import(), amdgpu_bo_export
182 struct amdgpu_bo_metadata {
183 /** Special flag associated with surface */
187 * ASIC-specific tiling information (also used by DCE).
188 * The encoding is defined by the AMDGPU_TILING_* definitions.
190 uint64_t tiling_info;
192 /** Size of metadata associated with the buffer, in bytes. */
193 uint32_t size_metadata;
195 /** UMD specific metadata. Opaque for kernel */
196 uint32_t umd_metadata[64];
200 * Structure describing allocated buffer. Client may need
201 * to query such information as part of 'sharing' buffers mechanism
203 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_query_info(),
204 * amdgpu_bo_import(), amdgpu_bo_export()
206 struct amdgpu_bo_info {
207 /** Allocated memory size */
211 * It may be required to have some specific alignment requirements
212 * for physical back-up storage.
214 uint64_t phys_alignment;
217 * Assigned virtual MC Base Address.
218 * \note This information will be returned only if this buffer was
219 * allocated in the same process otherwise 0 will be returned.
221 uint64_t virtual_mc_base_address;
223 /** Heap where to allocate memory. */
224 uint32_t preferred_heap;
226 /** Additional allocation flags. */
227 uint64_t alloc_flags;
229 /** Metadata associated with buffer if any. */
230 struct amdgpu_bo_metadata metadata;
234 * Structure with information about "imported" buffer
236 * \sa amdgpu_bo_import()
239 struct amdgpu_bo_import_result {
240 /** Handle of memory/buffer to use */
241 amdgpu_bo_handle buf_handle;
246 /** Assigned virtual MC Base Address */
247 uint64_t virtual_mc_base_address;
252 * Structure to describe GDS partitioning information.
253 * \note OA and GWS resources are asscoiated with GDS partition
255 * \sa amdgpu_gpu_resource_query_gds_info
258 struct amdgpu_gds_resource_info {
259 uint32_t gds_gfx_partition_size;
260 uint32_t compute_partition_size;
261 uint32_t gds_total_size;
262 uint32_t gws_per_gfx_partition;
263 uint32_t gws_per_compute_partition;
264 uint32_t oa_per_gfx_partition;
265 uint32_t oa_per_compute_partition;
269 * Structure describing CS fence
271 * \sa amdgpu_cs_query_fence_status(), amdgpu_cs_request, amdgpu_cs_submit()
274 struct amdgpu_cs_fence {
276 /** In which context IB was sent to execution */
277 amdgpu_context_handle context;
279 /** To which HW IP type the fence belongs */
282 /** IP instance index if there are several IPs of the same type. */
283 uint32_t ip_instance;
285 /** Ring index of the HW IP */
288 /** Specify fence for which we need to check submission status.*/
293 * Structure describing IB
295 * \sa amdgpu_cs_request, amdgpu_cs_submit()
298 struct amdgpu_cs_ib_info {
302 /** Virtual MC address of the command buffer */
303 uint64_t ib_mc_address;
306 * Size of Command Buffer to be submitted.
307 * - The size is in units of dwords (4 bytes).
314 * Structure describing submission request
316 * \note We could have several IBs as packet. e.g. CE, CE, DE case for gfx
318 * \sa amdgpu_cs_submit()
320 struct amdgpu_cs_request {
321 /** Specify flags with additional information */
324 /** Specify HW IP block type to which to send the IB. */
327 /** IP instance index if there are several IPs of the same type. */
328 unsigned ip_instance;
331 * Specify ring index of the IP. We could have several rings
332 * in the same IP. E.g. 0 for SDMA0 and 1 for SDMA1.
337 * List handle with resources used by this request.
339 amdgpu_bo_list_handle resources;
342 * Number of dependencies this Command submission needs to
343 * wait for before starting execution.
345 uint32_t number_of_dependencies;
348 * Array of dependencies which need to be met before
349 * execution can start.
351 struct amdgpu_cs_fence *dependencies;
353 /** Number of IBs to submit in the field ibs. */
354 uint32_t number_of_ibs;
357 * IBs to submit. Those IBs will be submit together as single entity
359 struct amdgpu_cs_ib_info *ibs;
363 * Structure which provide information about GPU VM MC Address space
364 * alignments requirements
366 * \sa amdgpu_query_buffer_size_alignment
368 struct amdgpu_buffer_size_alignments {
369 /** Size alignment requirement for allocation in
374 * Size alignment requirement for allocation in remote memory
376 uint64_t size_remote;
380 * Structure which provide information about heap
382 * \sa amdgpu_query_heap_info()
385 struct amdgpu_heap_info {
386 /** Theoretical max. available memory in the given heap */
390 * Number of bytes allocated in the heap. This includes all processes
391 * and private allocations in the kernel. It changes when new buffers
392 * are allocated, freed, and moved. It cannot be larger than
398 * Theoretical possible max. size of buffer which
399 * could be allocated in the given heap
401 uint64_t max_allocation;
405 * Describe GPU h/w info needed for UMD correct initialization
407 * \sa amdgpu_query_gpu_info()
409 struct amdgpu_gpu_info {
414 /** Chip external revision */
415 uint32_t chip_external_rev;
420 /** max engine clock*/
421 uint64_t max_engine_clk;
422 /** max memory clock */
423 uint64_t max_memory_clk;
424 /** number of shader engines */
425 uint32_t num_shader_engines;
426 /** number of shader arrays per engine */
427 uint32_t num_shader_arrays_per_engine;
428 /** Number of available good shader pipes */
429 uint32_t avail_quad_shader_pipes;
430 /** Max. number of shader pipes.(including good and bad pipes */
431 uint32_t max_quad_shader_pipes;
432 /** Number of parameter cache entries per shader quad pipe */
433 uint32_t cache_entries_per_quad_pipe;
434 /** Number of available graphics context */
435 uint32_t num_hw_gfx_contexts;
436 /** Number of render backend pipes */
438 /** Enabled render backend pipe mask */
439 uint32_t enabled_rb_pipes_mask;
440 /** Frequency of GPU Counter */
441 uint32_t gpu_counter_freq;
442 /** CC_RB_BACKEND_DISABLE.BACKEND_DISABLE per SE */
443 uint32_t backend_disable[4];
444 /** Value of MC_ARB_RAMCFG register*/
445 uint32_t mc_arb_ramcfg;
446 /** Value of GB_ADDR_CONFIG */
447 uint32_t gb_addr_cfg;
448 /** Values of the GB_TILE_MODE0..31 registers */
449 uint32_t gb_tile_mode[32];
450 /** Values of GB_MACROTILE_MODE0..15 registers */
451 uint32_t gb_macro_tile_mode[16];
452 /** Value of PA_SC_RASTER_CONFIG register per SE */
453 uint32_t pa_sc_raster_cfg[4];
454 /** Value of PA_SC_RASTER_CONFIG_1 register per SE */
455 uint32_t pa_sc_raster_cfg1[4];
457 uint32_t cu_active_number;
459 uint32_t cu_bitmap[4][4];
460 /* video memory type info*/
462 /* video memory bit width*/
463 uint32_t vram_bit_width;
464 /** constant engine ram size*/
465 uint32_t ce_ram_size;
469 /*--------------------------------------------------------------------------*/
470 /*------------------------- Functions --------------------------------------*/
471 /*--------------------------------------------------------------------------*/
474 * Initialization / Cleanup
480 * \param fd - \c [in] File descriptor for AMD GPU device
481 * received previously as the result of
482 * e.g. drmOpen() call.
483 * For legacy fd type, the DRI2/DRI3
484 * authentication should be done before
485 * calling this function.
486 * \param major_version - \c [out] Major version of library. It is assumed
487 * that adding new functionality will cause
488 * increase in major version
489 * \param minor_version - \c [out] Minor version of library
490 * \param device_handle - \c [out] Pointer to opaque context which should
491 * be passed as the first parameter on each
495 * \return 0 on success\n
496 * <0 - Negative POSIX Error code
499 * \sa amdgpu_device_deinitialize()
501 int amdgpu_device_initialize(int fd,
502 uint32_t *major_version,
503 uint32_t *minor_version,
504 amdgpu_device_handle *device_handle);
508 * When access to such library does not needed any more the special
509 * function must be call giving opportunity to clean up any
510 * resources if needed.
512 * \param device_handle - \c [in] Context associated with file
513 * descriptor for AMD GPU device
514 * received previously as the
515 * result e.g. of drmOpen() call.
517 * \return 0 on success\n
518 * <0 - Negative POSIX Error code
520 * \sa amdgpu_device_initialize()
523 int amdgpu_device_deinitialize(amdgpu_device_handle device_handle);
531 * Allocate memory to be used by UMD for GPU related operations
533 * \param dev - \c [in] Device handle.
534 * See #amdgpu_device_initialize()
535 * \param alloc_buffer - \c [in] Pointer to the structure describing an
537 * \param info - \c [out] Pointer to structure which return
538 * information about allocated memory
540 * \return 0 on success\n
541 * <0 - Negative POSIX Error code
543 * \sa amdgpu_bo_free()
545 int amdgpu_bo_alloc(amdgpu_device_handle dev,
546 struct amdgpu_bo_alloc_request *alloc_buffer,
547 struct amdgpu_bo_alloc_result *info);
550 * Associate opaque data with buffer to be queried by another UMD
552 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
553 * \param buf_handle - \c [in] Buffer handle
554 * \param info - \c [in] Metadata to associated with buffer
556 * \return 0 on success\n
557 * <0 - Negative POSIX Error code
559 int amdgpu_bo_set_metadata(amdgpu_bo_handle buf_handle,
560 struct amdgpu_bo_metadata *info);
563 * Query buffer information including metadata previusly associated with
566 * \param dev - \c [in] Device handle.
567 * See #amdgpu_device_initialize()
568 * \param buf_handle - \c [in] Buffer handle
569 * \param info - \c [out] Structure describing buffer
571 * \return 0 on success\n
572 * <0 - Negative POSIX Error code
574 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_alloc()
576 int amdgpu_bo_query_info(amdgpu_bo_handle buf_handle,
577 struct amdgpu_bo_info *info);
580 * Allow others to get access to buffer
582 * \param dev - \c [in] Device handle.
583 * See #amdgpu_device_initialize()
584 * \param buf_handle - \c [in] Buffer handle
585 * \param type - \c [in] Type of handle requested
586 * \param shared_handle - \c [out] Special "shared" handle
588 * \return 0 on success\n
589 * <0 - Negative POSIX Error code
591 * \sa amdgpu_bo_import()
594 int amdgpu_bo_export(amdgpu_bo_handle buf_handle,
595 enum amdgpu_bo_handle_type type,
596 uint32_t *shared_handle);
599 * Request access to "shared" buffer
601 * \param dev - \c [in] Device handle.
602 * See #amdgpu_device_initialize()
603 * \param type - \c [in] Type of handle requested
604 * \param shared_handle - \c [in] Shared handle received as result "import"
606 * \param output - \c [out] Pointer to structure with information
607 * about imported buffer
609 * \return 0 on success\n
610 * <0 - Negative POSIX Error code
612 * \note Buffer must be "imported" only using new "fd" (different from
613 * one used by "exporter").
615 * \sa amdgpu_bo_export()
618 int amdgpu_bo_import(amdgpu_device_handle dev,
619 enum amdgpu_bo_handle_type type,
620 uint32_t shared_handle,
621 struct amdgpu_bo_import_result *output);
624 * Request GPU access to user allocated memory e.g. via "malloc"
626 * \param dev - [in] Device handle. See #amdgpu_device_initialize()
627 * \param cpu - [in] CPU address of user allocated memory which we
628 * want to map to GPU address space (make GPU accessible)
629 * (This address must be correctly aligned).
630 * \param size - [in] Size of allocation (must be correctly aligned)
631 * \param amdgpu_bo_alloc_result - [out] Handle of allocation to be passed as
632 * resource on submission and be used in other operations.
635 * \return 0 on success\n
636 * <0 - Negative POSIX Error code
639 * This call doesn't guarantee that such memory will be persistently
640 * "locked" / make non-pageable. The purpose of this call is to provide
641 * opportunity for GPU get access to this resource during submission.
643 * The maximum amount of memory which could be mapped in this call depends
644 * if overcommit is disabled or not. If overcommit is disabled than the max.
645 * amount of memory to be pinned will be limited by left "free" size in total
646 * amount of memory which could be locked simultaneously ("GART" size).
648 * Supported (theoretical) max. size of mapping is restricted only by
651 * It is responsibility of caller to correctly specify access rights
654 int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev,
655 void *cpu, uint64_t size,
656 struct amdgpu_bo_alloc_result *info);
659 * Free previosuly allocated memory
661 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
662 * \param buf_handle - \c [in] Buffer handle to free
664 * \return 0 on success\n
665 * <0 - Negative POSIX Error code
667 * \note In the case of memory shared between different applications all
668 * resources will be “physically” freed only all such applications
670 * \note If is UMD responsibility to ‘free’ buffer only when there is no
673 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_alloc()
676 int amdgpu_bo_free(amdgpu_bo_handle buf_handle);
679 * Request CPU access to GPU accessable memory
681 * \param buf_handle - \c [in] Buffer handle
682 * \param cpu - \c [out] CPU address to be used for access
684 * \return 0 on success\n
685 * <0 - Negative POSIX Error code
687 * \sa amdgpu_bo_cpu_unmap()
690 int amdgpu_bo_cpu_map(amdgpu_bo_handle buf_handle, void **cpu);
693 * Release CPU access to GPU memory
695 * \param buf_handle - \c [in] Buffer handle
697 * \return 0 on success\n
698 * <0 - Negative POSIX Error code
700 * \sa amdgpu_bo_cpu_map()
703 int amdgpu_bo_cpu_unmap(amdgpu_bo_handle buf_handle);
706 * Wait until a buffer is not used by the device.
708 * \param dev - \c [in] Device handle. See #amdgpu_lib_initialize()
709 * \param buf_handle - \c [in] Buffer handle.
710 * \param timeout_ns - Timeout in nanoseconds.
711 * \param buffer_busy - 0 if buffer is idle, all GPU access was completed
712 * and no GPU access is scheduled.
713 * 1 GPU access is in fly or scheduled
715 * \return 0 - on success
716 * <0 - Negative POSIX Error code
718 int amdgpu_bo_wait_for_idle(amdgpu_bo_handle buf_handle,
723 * Creates a BO list handle for command submission.
725 * \param dev - \c [in] Device handle.
726 * See #amdgpu_device_initialize()
727 * \param number_of_resources - \c [in] Number of BOs in the list
728 * \param resources - \c [in] List of BO handles
729 * \param resource_prios - \c [in] Optional priority for each handle
730 * \param result - \c [out] Created BO list handle
732 * \return 0 on success\n
733 * <0 - Negative POSIX Error code
735 * \sa amdgpu_bo_list_destroy()
737 int amdgpu_bo_list_create(amdgpu_device_handle dev,
738 uint32_t number_of_resources,
739 amdgpu_bo_handle *resources,
740 uint8_t *resource_prios,
741 amdgpu_bo_list_handle *result);
744 * Destroys a BO list handle.
746 * \param handle - \c [in] BO list handle.
748 * \return 0 on success\n
749 * <0 - Negative POSIX Error code
751 * \sa amdgpu_bo_list_create()
753 int amdgpu_bo_list_destroy(amdgpu_bo_list_handle handle);
756 * Update resources for existing BO list
758 * \param handle - \c [in] BO list handle
759 * \param number_of_resources - \c [in] Number of BOs in the list
760 * \param resources - \c [in] List of BO handles
761 * \param resource_prios - \c [in] Optional priority for each handle
763 * \return 0 on success\n
764 * <0 - Negative POSIX Error code
766 * \sa amdgpu_bo_list_update()
768 int amdgpu_bo_list_update(amdgpu_bo_list_handle handle,
769 uint32_t number_of_resources,
770 amdgpu_bo_handle *resources,
771 uint8_t *resource_prios);
774 * GPU Execution context
779 * Create GPU execution Context
781 * For the purpose of GPU Scheduler and GPU Robustness extensions it is
782 * necessary to have information/identify rendering/compute contexts.
783 * It also may be needed to associate some specific requirements with such
784 * contexts. Kernel driver will guarantee that submission from the same
785 * context will always be executed in order (first come, first serve).
788 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
789 * \param context - \c [out] GPU Context handle
791 * \return 0 on success\n
792 * <0 - Negative POSIX Error code
794 * \sa amdgpu_cs_ctx_free()
797 int amdgpu_cs_ctx_create(amdgpu_device_handle dev,
798 amdgpu_context_handle *context);
802 * Destroy GPU execution context when not needed any more
804 * \param context - \c [in] GPU Context handle
806 * \return 0 on success\n
807 * <0 - Negative POSIX Error code
809 * \sa amdgpu_cs_ctx_create()
812 int amdgpu_cs_ctx_free(amdgpu_context_handle context);
815 * Query reset state for the specific GPU Context
817 * \param context - \c [in] GPU Context handle
818 * \param state - \c [out] One of AMDGPU_CTX_*_RESET
819 * \param hangs - \c [out] Number of hangs caused by the context.
821 * \return 0 on success\n
822 * <0 - Negative POSIX Error code
824 * \sa amdgpu_cs_ctx_create()
827 int amdgpu_cs_query_reset_state(amdgpu_context_handle context,
828 uint32_t *state, uint32_t *hangs);
831 * Command Buffers Management
836 * Send request to submit command buffers to hardware.
838 * Kernel driver could use GPU Scheduler to make decision when physically
839 * sent this request to the hardware. Accordingly this request could be put
840 * in queue and sent for execution later. The only guarantee is that request
841 * from the same GPU context to the same ip:ip_instance:ring will be executed in
845 * \param dev - \c [in] Device handle.
846 * See #amdgpu_device_initialize()
847 * \param context - \c [in] GPU Context
848 * \param flags - \c [in] Global submission flags
849 * \param ibs_request - \c [in] Pointer to submission requests.
850 * We could submit to the several
851 * engines/rings simulteniously as
853 * \param number_of_requests - \c [in] Number of submission requests
854 * \param fences - \c [out] Pointer to array of data to get
855 * fences to identify submission
856 * requests. Timestamps are valid
857 * in this GPU context and could be used
858 * to identify/detect completion of
861 * \return 0 on success\n
862 * <0 - Negative POSIX Error code
864 * \note It is required to pass correct resource list with buffer handles
865 * which will be accessible by command buffers from submission
866 * This will allow kernel driver to correctly implement "paging".
867 * Failure to do so will have unpredictable results.
869 * \sa amdgpu_command_buffer_alloc(), amdgpu_command_buffer_free(),
870 * amdgpu_cs_query_fence_status()
873 int amdgpu_cs_submit(amdgpu_context_handle context,
875 struct amdgpu_cs_request *ibs_request,
876 uint32_t number_of_requests,
880 * Query status of Command Buffer Submission
882 * \param fence - \c [in] Structure describing fence to query
883 * \param timeout_ns - \c [in] Timeout value to wait
884 * \param flags - \c [in] Flags for the query
885 * \param expired - \c [out] If fence expired or not.\n
886 * 0 – if fence is not expired\n
889 * \return 0 on success\n
890 * <0 - Negative POSIX Error code
892 * \note If UMD wants only to check operation status and returned immediately
893 * then timeout value as 0 must be passed. In this case success will be
894 * returned in the case if submission was completed or timeout error
897 * \sa amdgpu_cs_submit()
899 int amdgpu_cs_query_fence_status(struct amdgpu_cs_fence *fence,
910 * Query allocation size alignments
912 * UMD should query information about GPU VM MC size alignments requirements
913 * to be able correctly choose required allocation size and implement
914 * internal optimization if needed.
916 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
917 * \param info - \c [out] Pointer to structure to get size alignment
920 * \return 0 on success\n
921 * <0 - Negative POSIX Error code
924 int amdgpu_query_buffer_size_alignment(amdgpu_device_handle dev,
925 struct amdgpu_buffer_size_alignments
929 * Query firmware versions
931 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
932 * \param fw_type - \c [in] AMDGPU_INFO_FW_*
933 * \param ip_instance - \c [in] Index of the IP block of the same type.
934 * \param index - \c [in] Index of the engine. (for SDMA and MEC)
935 * \param version - \c [out] Pointer to to the "version" return value
936 * \param feature - \c [out] Pointer to to the "feature" return value
938 * \return 0 on success\n
939 * <0 - Negative POSIX Error code
942 int amdgpu_query_firmware_version(amdgpu_device_handle dev, unsigned fw_type,
943 unsigned ip_instance, unsigned index,
944 uint32_t *version, uint32_t *feature);
947 * Query the number of HW IP instances of a certain type.
949 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
950 * \param type - \c [in] Hardware IP block type = AMDGPU_HW_IP_*
951 * \param count - \c [out] Pointer to structure to get information
953 * \return 0 on success\n
954 * <0 - Negative POSIX Error code
956 int amdgpu_query_hw_ip_count(amdgpu_device_handle dev, unsigned type,
960 * Query engine information
962 * This query allows UMD to query information different engines and their
965 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
966 * \param type - \c [in] Hardware IP block type = AMDGPU_HW_IP_*
967 * \param ip_instance - \c [in] Index of the IP block of the same type.
968 * \param info - \c [out] Pointer to structure to get information
970 * \return 0 on success\n
971 * <0 - Negative POSIX Error code
973 int amdgpu_query_hw_ip_info(amdgpu_device_handle dev, unsigned type,
974 unsigned ip_instance,
975 struct drm_amdgpu_info_hw_ip *info);
978 * Query heap information
980 * This query allows UMD to query potentially available memory resources and
981 * adjust their logic if necessary.
983 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
984 * \param heap - \c [in] Heap type
985 * \param info - \c [in] Pointer to structure to get needed information
987 * \return 0 on success\n
988 * <0 - Negative POSIX Error code
991 int amdgpu_query_heap_info(amdgpu_device_handle dev, uint32_t heap,
992 uint32_t flags, struct amdgpu_heap_info *info);
995 * Get the CRTC ID from the mode object ID
997 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
998 * \param id - \c [in] Mode object ID
999 * \param result - \c [in] Pointer to the CRTC ID
1001 * \return 0 on success\n
1002 * <0 - Negative POSIX Error code
1005 int amdgpu_query_crtc_from_id(amdgpu_device_handle dev, unsigned id,
1009 * Query GPU H/w Info
1011 * Query hardware specific information
1013 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1014 * \param heap - \c [in] Heap type
1015 * \param info - \c [in] Pointer to structure to get needed information
1017 * \return 0 on success\n
1018 * <0 - Negative POSIX Error code
1021 int amdgpu_query_gpu_info(amdgpu_device_handle dev,
1022 struct amdgpu_gpu_info *info);
1025 * Query hardware or driver information.
1027 * The return size is query-specific and depends on the "info_id" parameter.
1028 * No more than "size" bytes is returned.
1030 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1031 * \param info_id - \c [in] AMDGPU_INFO_*
1032 * \param size - \c [in] Size of the returned value.
1033 * \param value - \c [out] Pointer to the return value.
1035 * \return 0 on success\n
1036 * <0 - Negative POSIX error code
1039 int amdgpu_query_info(amdgpu_device_handle dev, unsigned info_id,
1040 unsigned size, void *value);
1043 * Query information about GDS
1045 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1046 * \param gds_info - \c [out] Pointer to structure to get GDS information
1048 * \return 0 on success\n
1049 * <0 - Negative POSIX Error code
1052 int amdgpu_query_gds_info(amdgpu_device_handle dev,
1053 struct amdgpu_gds_resource_info *gds_info);
1056 * Read a set of consecutive memory-mapped registers.
1057 * Not all registers are allowed to be read by userspace.
1059 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize(
1060 * \param dword_offset - \c [in] Register offset in dwords
1061 * \param count - \c [in] The number of registers to read starting
1063 * \param instance - \c [in] GRBM_GFX_INDEX selector. It may have other
1064 * uses. Set it to 0xffffffff if unsure.
1065 * \param flags - \c [in] Flags with additional information.
1066 * \param values - \c [out] The pointer to return values.
1068 * \return 0 on success\n
1069 * <0 - Negative POSIX error code
1072 int amdgpu_read_mm_registers(amdgpu_device_handle dev, unsigned dword_offset,
1073 unsigned count, uint32_t instance, uint32_t flags,
1077 * Allocate virtual address range
1079 * \param dev - [in] Device handle. See #amdgpu_device_initialize()
1080 * \param va_range_type - \c [in] Type of MC va range from which to allocate
1081 * \param size - \c [in] Size of range. Size must be correctly* aligned.
1082 * It is client responsibility to correctly aligned size based on the future
1083 * usage of allocated range.
1084 * \param va_base_alignment - \c [in] Overwrite base address alignment
1085 * requirement for GPU VM MC virtual
1086 * address assignment. Must be multiple of size alignments received as
1087 * 'amdgpu_buffer_size_alignments'.
1088 * If 0 use the default one.
1089 * \param va_base_required - \c [in] Specified required va base address.
1090 * If 0 then library choose available one.
1091 * If !0 value will be passed and those value already "in use" then
1092 * corresponding error status will be returned.
1093 * \param va_base_allocated - \c [out] On return: Allocated VA base to be used
1095 * \param va_range_handle - \c [out] On return: Handle assigned to allocation
1097 * \return 0 on success\n
1098 * >0 - AMD specific error code\n
1099 * <0 - Negative POSIX Error code
1102 * It is client responsibility to correctly handle VA assignments and usage.
1103 * Neither kernel driver nor libdrm_amdpgu are able to prevent and
1104 * detect wrong va assignemnt.
1106 * It is client responsibility to correctly handle multi-GPU cases and to pass
1107 * the corresponding arrays of all devices handles where corresponding VA will
1111 int amdgpu_va_range_alloc(amdgpu_device_handle dev,
1112 enum amdgpu_gpu_va_range va_range_type,
1114 uint64_t va_base_alignment,
1115 uint64_t va_base_required,
1116 uint64_t *va_base_allocated,
1117 amdgpu_va_handle *va_range_handle);
1120 * Free previously allocated virtual address range
1123 * \param va_range_handle - \c [in] Handle assigned to VA allocation
1125 * \return 0 on success\n
1126 * >0 - AMD specific error code\n
1127 * <0 - Negative POSIX Error code
1130 int amdgpu_va_range_free(amdgpu_va_handle va_range_handle);
1133 * Query virtual address range
1135 * UMD can query GPU VM range supported by each device
1136 * to initialize its own VAM accordingly.
1138 * \param dev - [in] Device handle. See #amdgpu_device_initialize()
1139 * \param type - \c [in] Type of virtual address range
1140 * \param offset - \c [out] Start offset of virtual address range
1141 * \param size - \c [out] Size of virtual address range
1143 * \return 0 on success\n
1144 * <0 - Negative POSIX Error code
1148 int amdgpu_va_range_query(amdgpu_device_handle dev,
1149 enum amdgpu_gpu_va_range type,
1153 #endif /* #ifdef _AMDGPU_H_ */