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
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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
57 #define AMDGPU_TIMEOUT_INFINITE 0xffffffffffffffffull
60 /*--------------------------------------------------------------------------*/
61 /* ----------------------------- Enums ------------------------------------ */
62 /*--------------------------------------------------------------------------*/
65 * Enum describing possible handle types
67 * \sa amdgpu_bo_import, amdgpu_bo_export
70 enum amdgpu_bo_handle_type {
71 /** GEM flink name (needs DRM authentication, used by DRI2) */
72 amdgpu_bo_handle_type_gem_flink_name = 0,
74 /** KMS handle which is used by all driver ioctls */
75 amdgpu_bo_handle_type_kms = 1,
77 /** DMA-buf fd handle */
78 amdgpu_bo_handle_type_dma_buf_fd = 2
82 /*--------------------------------------------------------------------------*/
83 /* -------------------------- Datatypes ----------------------------------- */
84 /*--------------------------------------------------------------------------*/
87 * Define opaque pointer to context associated with fd.
88 * This context will be returned as the result of
89 * "initialize" function and should be pass as the first
90 * parameter to any API call
92 typedef struct amdgpu_device *amdgpu_device_handle;
95 * Define GPU Context type as pointer to opaque structure
96 * Example of GPU Context is the "rendering" context associated
97 * with OpenGL context (glCreateContext)
99 typedef struct amdgpu_context *amdgpu_context_handle;
102 * Define handle for amdgpu resources: buffer, GDS, etc.
104 typedef struct amdgpu_bo *amdgpu_bo_handle;
107 * Define handle for list of BOs
109 typedef struct amdgpu_bo_list *amdgpu_bo_list_handle;
112 /*--------------------------------------------------------------------------*/
113 /* -------------------------- Structures ---------------------------------- */
114 /*--------------------------------------------------------------------------*/
117 * Structure describing memory allocation request
119 * \sa amdgpu_bo_alloc()
122 struct amdgpu_bo_alloc_request {
123 /** Allocation request. It must be aligned correctly. */
127 * It may be required to have some specific alignment requirements
128 * for physical back-up storage (e.g. for displayable surface).
129 * If 0 there is no special alignment requirement
131 uint64_t phys_alignment;
134 * UMD should specify where to allocate memory and how it
135 * will be accessed by the CPU.
137 uint32_t preferred_heap;
139 /** Additional flags passed on allocation */
144 * Structure describing memory allocation request
146 * \sa amdgpu_bo_alloc()
148 struct amdgpu_bo_alloc_result {
149 /** Assigned virtual MC Base Address */
150 uint64_t virtual_mc_base_address;
152 /** Handle of allocated memory to be used by the given process only. */
153 amdgpu_bo_handle buf_handle;
157 * Special UMD specific information associated with buffer.
159 * It may be need to pass some buffer charactersitic as part
160 * of buffer sharing. Such information are defined UMD and
161 * opaque for libdrm_amdgpu as well for kernel driver.
163 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_query_info,
164 * amdgpu_bo_import(), amdgpu_bo_export
167 struct amdgpu_bo_metadata {
168 /** Special flag associated with surface */
172 * ASIC-specific tiling information (also used by DCE).
173 * The encoding is defined by the AMDGPU_TILING_* definitions.
175 uint64_t tiling_info;
177 /** Size of metadata associated with the buffer, in bytes. */
178 uint32_t size_metadata;
180 /** UMD specific metadata. Opaque for kernel */
181 uint32_t umd_metadata[64];
185 * Structure describing allocated buffer. Client may need
186 * to query such information as part of 'sharing' buffers mechanism
188 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_query_info(),
189 * amdgpu_bo_import(), amdgpu_bo_export()
191 struct amdgpu_bo_info {
192 /** Allocated memory size */
196 * It may be required to have some specific alignment requirements
197 * for physical back-up storage.
199 uint64_t phys_alignment;
202 * Assigned virtual MC Base Address.
203 * \note This information will be returned only if this buffer was
204 * allocated in the same process otherwise 0 will be returned.
206 uint64_t virtual_mc_base_address;
208 /** Heap where to allocate memory. */
209 uint32_t preferred_heap;
211 /** Additional allocation flags. */
212 uint64_t alloc_flags;
214 /** Metadata associated with buffer if any. */
215 struct amdgpu_bo_metadata metadata;
219 * Structure with information about "imported" buffer
221 * \sa amdgpu_bo_import()
224 struct amdgpu_bo_import_result {
225 /** Handle of memory/buffer to use */
226 amdgpu_bo_handle buf_handle;
231 /** Assigned virtual MC Base Address */
232 uint64_t virtual_mc_base_address;
238 * Structure to describe GDS partitioning information.
239 * \note OA and GWS resources are asscoiated with GDS partition
241 * \sa amdgpu_gpu_resource_query_gds_info
244 struct amdgpu_gds_resource_info {
245 uint32_t gds_gfx_partition_size;
246 uint32_t compute_partition_size;
247 uint32_t gds_total_size;
248 uint32_t gws_per_gfx_partition;
249 uint32_t gws_per_compute_partition;
250 uint32_t oa_per_gfx_partition;
251 uint32_t oa_per_compute_partition;
257 * Structure describing result of request to allocate GDS
259 * \sa amdgpu_gpu_resource_gds_alloc
262 struct amdgpu_gds_alloc_info {
263 /** Handle assigned to gds allocation */
264 amdgpu_bo_handle resource_handle;
266 /** How much was really allocated */
267 uint32_t gds_memory_size;
269 /** Number of GWS resources allocated */
272 /** Number of OA resources allocated */
277 * Structure describing IB
279 * \sa amdgpu_cs_request, amdgpu_cs_submit()
282 struct amdgpu_cs_ib_info {
286 /** Virtual MC address of the command buffer */
287 uint64_t ib_mc_address;
290 * Size of Command Buffer to be submitted.
291 * - The size is in units of dwords (4 bytes).
292 * - Must be less or equal to the size of allocated IB
299 * Structure describing submission request
301 * \note We could have several IBs as packet. e.g. CE, CE, DE case for gfx
303 * \sa amdgpu_cs_submit()
305 struct amdgpu_cs_request {
306 /** Specify flags with additional information */
309 /** Specify HW IP block type to which to send the IB. */
312 /** IP instance index if there are several IPs of the same type. */
313 unsigned ip_instance;
316 * Specify ring index of the IP. We could have several rings
317 * in the same IP. E.g. 0 for SDMA0 and 1 for SDMA1.
322 * List handle with resources used by this request.
324 amdgpu_bo_list_handle resources;
326 /** Number of IBs to submit in the field ibs. */
327 uint32_t number_of_ibs;
330 * IBs to submit. Those IBs will be submit together as single entity
332 struct amdgpu_cs_ib_info *ibs;
336 * Structure describing request to check submission state using fence
338 * \sa amdgpu_cs_query_fence_status()
341 struct amdgpu_cs_query_fence {
343 /** In which context IB was sent to execution */
344 amdgpu_context_handle context;
346 /** Timeout in nanoseconds. */
349 /** To which HW IP type the fence belongs */
352 /** IP instance index if there are several IPs of the same type. */
353 unsigned ip_instance;
355 /** Ring index of the HW IP */
361 /** Specify fence for which we need to check
362 * submission status.*/
367 * Structure which provide information about GPU VM MC Address space
368 * alignments requirements
370 * \sa amdgpu_query_buffer_size_alignment
372 struct amdgpu_buffer_size_alignments {
373 /** Size alignment requirement for allocation in
378 * Size alignment requirement for allocation in remote memory
380 uint64_t size_remote;
385 * Structure which provide information about heap
387 * \sa amdgpu_query_heap_info()
390 struct amdgpu_heap_info {
391 /** Theoretical max. available memory in the given heap */
395 * Number of bytes allocated in the heap. This includes all processes
396 * and private allocations in the kernel. It changes when new buffers
397 * are allocated, freed, and moved. It cannot be larger than
403 * Theoretical possible max. size of buffer which
404 * could be allocated in the given heap
406 uint64_t max_allocation;
412 * Describe GPU h/w info needed for UMD correct initialization
414 * \sa amdgpu_query_gpu_info()
416 struct amdgpu_gpu_info {
419 /**< Chip revision */
421 /** Chip external revision */
422 uint32_t chip_external_rev;
427 /** max engine clock*/
428 uint64_t max_engine_clk;
429 /** max memory clock */
430 uint64_t max_memory_clk;
431 /** number of shader engines */
432 uint32_t num_shader_engines;
433 /** number of shader arrays per engine */
434 uint32_t num_shader_arrays_per_engine;
435 /** Number of available good shader pipes */
436 uint32_t avail_quad_shader_pipes;
437 /** Max. number of shader pipes.(including good and bad pipes */
438 uint32_t max_quad_shader_pipes;
439 /** Number of parameter cache entries per shader quad pipe */
440 uint32_t cache_entries_per_quad_pipe;
441 /** Number of available graphics context */
442 uint32_t num_hw_gfx_contexts;
443 /** Number of render backend pipes */
445 /** Enabled render backend pipe mask */
446 uint32_t enabled_rb_pipes_mask;
447 /** Frequency of GPU Counter */
448 uint32_t gpu_counter_freq;
449 /** CC_RB_BACKEND_DISABLE.BACKEND_DISABLE per SE */
450 uint32_t backend_disable[4];
451 /** Value of MC_ARB_RAMCFG register*/
452 uint32_t mc_arb_ramcfg;
453 /** Value of GB_ADDR_CONFIG */
454 uint32_t gb_addr_cfg;
455 /** Values of the GB_TILE_MODE0..31 registers */
456 uint32_t gb_tile_mode[32];
457 /** Values of GB_MACROTILE_MODE0..15 registers */
458 uint32_t gb_macro_tile_mode[16];
459 /** Value of PA_SC_RASTER_CONFIG register per SE */
460 uint32_t pa_sc_raster_cfg[4];
461 /** Value of PA_SC_RASTER_CONFIG_1 register per SE */
462 uint32_t pa_sc_raster_cfg1[4];
464 uint32_t cu_active_number;
466 uint32_t cu_bitmap[4][4];
467 /* video memory type info*/
469 /* video memory bit width*/
470 uint32_t vram_bit_width;
471 /** constant engine ram size*/
472 uint32_t ce_ram_size;
476 /*--------------------------------------------------------------------------*/
477 /*------------------------- Functions --------------------------------------*/
478 /*--------------------------------------------------------------------------*/
481 * Initialization / Cleanup
488 * \param fd - \c [in] File descriptor for AMD GPU device
489 * received previously as the result of
490 * e.g. drmOpen() call.
491 * For legacy fd type, the DRI2/DRI3 authentication
492 * should be done before calling this function.
493 * \param major_version - \c [out] Major version of library. It is assumed
494 * that adding new functionality will cause
495 * increase in major version
496 * \param minor_version - \c [out] Minor version of library
497 * \param device_handle - \c [out] Pointer to opaque context which should
498 * be passed as the first parameter on each
502 * \return 0 on success\n
503 * >0 - AMD specific error code\n
504 * <0 - Negative POSIX Error code
507 * \sa amdgpu_device_deinitialize()
509 int amdgpu_device_initialize(int fd,
510 uint32_t *major_version,
511 uint32_t *minor_version,
512 amdgpu_device_handle *device_handle);
518 * When access to such library does not needed any more the special
519 * function must be call giving opportunity to clean up any
520 * resources if needed.
522 * \param device_handle - \c [in] Context associated with file
523 * descriptor for AMD GPU device
524 * received previously as the
525 * result e.g. of drmOpen() call.
527 * \return 0 on success\n
528 * >0 - AMD specific error code\n
529 * <0 - Negative POSIX Error code
531 * \sa amdgpu_device_initialize()
534 int amdgpu_device_deinitialize(amdgpu_device_handle device_handle);
543 * Allocate memory to be used by UMD for GPU related operations
545 * \param dev - \c [in] Device handle.
546 * See #amdgpu_device_initialize()
547 * \param alloc_buffer - \c [in] Pointer to the structure describing an
549 * \param info - \c [out] Pointer to structure which return
550 * information about allocated memory
552 * \return 0 on success\n
553 * >0 - AMD specific error code\n
554 * <0 - Negative POSIX Error code
556 * \sa amdgpu_bo_free()
558 int amdgpu_bo_alloc(amdgpu_device_handle dev,
559 struct amdgpu_bo_alloc_request *alloc_buffer,
560 struct amdgpu_bo_alloc_result *info);
563 * Associate opaque data with buffer to be queried by another UMD
565 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
566 * \param buf_handle - \c [in] Buffer handle
567 * \param info - \c [in] Metadata to associated with buffer
569 * \return 0 on success\n
570 * >0 - AMD specific error code\n
571 * <0 - Negative POSIX Error code
573 int amdgpu_bo_set_metadata(amdgpu_bo_handle buf_handle,
574 struct amdgpu_bo_metadata *info);
577 * Query buffer information including metadata previusly associated with
580 * \param dev - \c [in] Device handle.
581 * See #amdgpu_device_initialize()
582 * \param buf_handle - \c [in] Buffer handle
583 * \param info - \c [out] Structure describing buffer
585 * \return 0 on success\n
586 * >0 - AMD specific error code\n
587 * <0 - Negative POSIX Error code
589 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_alloc()
591 int amdgpu_bo_query_info(amdgpu_bo_handle buf_handle,
592 struct amdgpu_bo_info *info);
595 * Allow others to get access to buffer
597 * \param dev - \c [in] Device handle.
598 * See #amdgpu_device_initialize()
599 * \param buf_handle - \c [in] Buffer handle
600 * \param type - \c [in] Type of handle requested
601 * \param shared_handle - \c [out] Special "shared" handle
603 * \return 0 on success\n
604 * >0 - AMD specific error code\n
605 * <0 - Negative POSIX Error code
607 * \sa amdgpu_bo_import()
610 int amdgpu_bo_export(amdgpu_bo_handle buf_handle,
611 enum amdgpu_bo_handle_type type,
612 uint32_t *shared_handle);
615 * Request access to "shared" buffer
617 * \param dev - \c [in] Device handle.
618 * See #amdgpu_device_initialize()
619 * \param type - \c [in] Type of handle requested
620 * \param shared_handle - \c [in] Shared handle received as result "import"
622 * \param output - \c [out] Pointer to structure with information
623 * about imported buffer
625 * \return 0 on success\n
626 * >0 - AMD specific error code\n
627 * <0 - Negative POSIX Error code
629 * \note Buffer must be "imported" only using new "fd" (different from
630 * one used by "exporter").
632 * \sa amdgpu_bo_export()
635 int amdgpu_bo_import(amdgpu_device_handle dev,
636 enum amdgpu_bo_handle_type type,
637 uint32_t shared_handle,
638 struct amdgpu_bo_import_result *output);
641 * Free previosuly allocated memory
643 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
644 * \param buf_handle - \c [in] Buffer handle to free
646 * \return 0 on success\n
647 * >0 - AMD specific error code\n
648 * <0 - Negative POSIX Error code
650 * \note In the case of memory shared between different applications all
651 * resources will be “physically” freed only all such applications
653 * \note If is UMD responsibility to ‘free’ buffer only when there is no
656 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_alloc()
659 int amdgpu_bo_free(amdgpu_bo_handle buf_handle);
662 * Request CPU access to GPU accessable memory
664 * \param buf_handle - \c [in] Buffer handle
665 * \param cpu - \c [out] CPU address to be used for access
667 * \return 0 on success\n
668 * >0 - AMD specific error code\n
669 * <0 - Negative POSIX Error code
671 * \sa amdgpu_bo_cpu_unmap()
674 int amdgpu_bo_cpu_map(amdgpu_bo_handle buf_handle, void **cpu);
677 * Release CPU access to GPU memory
679 * \param buf_handle - \c [in] Buffer handle
681 * \return 0 on success\n
682 * >0 - AMD specific error code\n
683 * <0 - Negative POSIX Error code
685 * \sa amdgpu_bo_cpu_map()
688 int amdgpu_bo_cpu_unmap(amdgpu_bo_handle buf_handle);
692 * Wait until a buffer is not used by the device.
694 * \param dev - \c [in] Device handle. See #amdgpu_lib_initialize()
695 * \param buf_handle - \c [in] Buffer handle.
696 * \param timeout_ns - Timeout in nanoseconds.
697 * \param buffer_busy - 0 if buffer is idle, all GPU access was completed
698 * and no GPU access is scheduled.
699 * 1 GPU access is in fly or scheduled
701 * \return 0 - on success
702 * <0 - AMD specific error code
704 int amdgpu_bo_wait_for_idle(amdgpu_bo_handle buf_handle,
709 * Creates a BO list handle for command submission.
711 * \param dev - \c [in] Device handle.
712 * See #amdgpu_device_initialize()
713 * \param number_of_resources - \c [in] Number of BOs in the list
714 * \param resources - \c [in] List of BO handles
715 * \param resource_prios - \c [in] Optional priority for each handle
716 * \param result - \c [out] Created BO list handle
718 * \return 0 on success\n
719 * >0 - AMD specific error code\n
720 * <0 - Negative POSIX Error code
722 * \sa amdgpu_bo_list_destroy()
724 int amdgpu_bo_list_create(amdgpu_device_handle dev,
725 uint32_t number_of_resources,
726 amdgpu_bo_handle *resources,
727 uint8_t *resource_prios,
728 amdgpu_bo_list_handle *result);
731 * Destroys a BO list handle.
733 * \param handle - \c [in] BO list handle.
735 * \return 0 on success\n
736 * >0 - AMD specific error code\n
737 * <0 - Negative POSIX Error code
739 * \sa amdgpu_bo_list_create()
741 int amdgpu_bo_list_destroy(amdgpu_bo_list_handle handle);
744 * Update resources for existing BO list
746 * \param handle - \c [in] BO list handle
747 * \param number_of_resources - \c [in] Number of BOs in the list
748 * \param resources - \c [in] List of BO handles
749 * \param resource_prios - \c [in] Optional priority for each handle
751 * \return 0 on success\n
752 * >0 - AMD specific error code\n
753 * <0 - Negative POSIX Error code
755 * \sa amdgpu_bo_list_update()
757 int amdgpu_bo_list_update(amdgpu_bo_list_handle handle,
758 uint32_t number_of_resources,
759 amdgpu_bo_handle *resources,
760 uint8_t *resource_prios);
763 * Special GPU Resources
770 * Query information about GDS
772 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
773 * \param gds_info - \c [out] Pointer to structure to get GDS information
775 * \return 0 on success\n
776 * >0 - AMD specific error code\n
777 * <0 - Negative POSIX Error code
780 int amdgpu_query_gds_info(amdgpu_device_handle dev,
781 struct amdgpu_gds_resource_info *gds_info);
785 * Allocate GDS partitions
787 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
788 * \param gds_size - \c [in] Size of gds allocation. Must be aligned
790 * \param alloc_info - \c [out] Pointer to structure to receive information
793 * \return 0 on success\n
794 * >0 - AMD specific error code\n
795 * <0 - Negative POSIX Error code
799 int amdgpu_gpu_resource_gds_alloc(amdgpu_device_handle dev,
801 struct amdgpu_gds_alloc_info *alloc_info);
807 * Release GDS resource. When GDS and associated resources not needed any
808 * more UMD should free them
810 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
811 * \param handle - \c [in] Handle assigned to GDS allocation
813 * \return 0 on success\n
814 * >0 - AMD specific error code\n
815 * <0 - Negative POSIX Error code
818 int amdgpu_gpu_resource_gds_free(amdgpu_bo_handle handle);
823 * GPU Execution context
828 * Create GPU execution Context
830 * For the purpose of GPU Scheduler and GPU Robustness extensions it is
831 * necessary to have information/identify rendering/compute contexts.
832 * It also may be needed to associate some specific requirements with such
833 * contexts. Kernel driver will guarantee that submission from the same
834 * context will always be executed in order (first come, first serve).
837 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
838 * \param context - \c [out] GPU Context handle
840 * \return 0 on success\n
841 * >0 - AMD specific error code\n
842 * <0 - Negative POSIX Error code
844 * \sa amdgpu_cs_ctx_free()
847 int amdgpu_cs_ctx_create(amdgpu_device_handle dev,
848 amdgpu_context_handle *context);
852 * Destroy GPU execution context when not needed any more
854 * \param context - \c [in] GPU Context handle
856 * \return 0 on success\n
857 * >0 - AMD specific error code\n
858 * <0 - Negative POSIX Error code
860 * \sa amdgpu_cs_ctx_create()
863 int amdgpu_cs_ctx_free(amdgpu_context_handle context);
866 * Query reset state for the specific GPU Context
868 * \param context - \c [in] GPU Context handle
869 * \param state - \c [out] One of AMDGPU_CTX_*_RESET
870 * \param hangs - \c [out] Number of hangs caused by the context.
872 * \return 0 on success\n
873 * >0 - AMD specific error code\n
874 * <0 - Negative POSIX Error code
876 * \sa amdgpu_cs_ctx_create()
879 int amdgpu_cs_query_reset_state(amdgpu_context_handle context,
880 uint32_t *state, uint32_t *hangs);
884 * Command Buffers Management
889 * Send request to submit command buffers to hardware.
891 * Kernel driver could use GPU Scheduler to make decision when physically
892 * sent this request to the hardware. Accordingly this request could be put
893 * in queue and sent for execution later. The only guarantee is that request
894 * from the same GPU context to the same ip:ip_instance:ring will be executed in
898 * \param dev - \c [in] Device handle.
899 * See #amdgpu_device_initialize()
900 * \param context - \c [in] GPU Context
901 * \param flags - \c [in] Global submission flags
902 * \param ibs_request - \c [in] Pointer to submission requests.
903 * We could submit to the several
904 * engines/rings simulteniously as
906 * \param number_of_requests - \c [in] Number of submission requests
907 * \param fences - \c [out] Pointer to array of data to get
908 * fences to identify submission
909 * requests. Timestamps are valid
910 * in this GPU context and could be used
911 * to identify/detect completion of
914 * \return 0 on success\n
915 * >0 - AMD specific error code\n
916 * <0 - Negative POSIX Error code
918 * \note It is required to pass correct resource list with buffer handles
919 * which will be accessible by command buffers from submission
920 * This will allow kernel driver to correctly implement "paging".
921 * Failure to do so will have unpredictable results.
923 * \sa amdgpu_command_buffer_alloc(), amdgpu_command_buffer_free(),
924 * amdgpu_cs_query_fence_status()
927 int amdgpu_cs_submit(amdgpu_context_handle context,
929 struct amdgpu_cs_request *ibs_request,
930 uint32_t number_of_requests,
934 * Query status of Command Buffer Submission
936 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
937 * \param fence - \c [in] Structure describing fence to query
938 * \param expired - \c [out] If fence expired or not.\n
939 * 0 – if fence is not expired\n
942 * \return 0 on success\n
943 * >0 - AMD specific error code\n
944 * <0 - Negative POSIX Error code
946 * \note If UMD wants only to check operation status and returned immediately
947 * then timeout value as 0 must be passed. In this case success will be
948 * returned in the case if submission was completed or timeout error
951 * \sa amdgpu_cs_submit()
953 int amdgpu_cs_query_fence_status(struct amdgpu_cs_query_fence *fence,
964 * Query allocation size alignments
966 * UMD should query information about GPU VM MC size alignments requirements
967 * to be able correctly choose required allocation size and implement
968 * internal optimization if needed.
970 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
971 * \param info - \c [out] Pointer to structure to get size alignment
974 * \return 0 on success\n
975 * >0 - AMD specific error code\n
976 * <0 - Negative POSIX Error code
979 int amdgpu_query_buffer_size_alignment(amdgpu_device_handle dev,
980 struct amdgpu_buffer_size_alignments
986 * Query firmware versions
988 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
989 * \param fw_type - \c [in] AMDGPU_INFO_FW_*
990 * \param ip_instance - \c [in] Index of the IP block of the same type.
991 * \param index - \c [in] Index of the engine. (for SDMA and MEC)
992 * \param version - \c [out] Pointer to to the "version" return value
993 * \param feature - \c [out] Pointer to to the "feature" return value
995 * \return 0 on success\n
996 * >0 - AMD specific error code\n
997 * <0 - Negative POSIX Error code
1000 int amdgpu_query_firmware_version(amdgpu_device_handle dev, unsigned fw_type,
1001 unsigned ip_instance, unsigned index,
1002 uint32_t *version, uint32_t *feature);
1007 * Query the number of HW IP instances of a certain type.
1009 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1010 * \param type - \c [in] Hardware IP block type = AMDGPU_HW_IP_*
1011 * \param count - \c [out] Pointer to structure to get information
1013 * \return 0 on success\n
1014 * >0 - AMD specific error code\n
1015 * <0 - Negative POSIX Error code
1017 int amdgpu_query_hw_ip_count(amdgpu_device_handle dev, unsigned type,
1023 * Query engine information
1025 * This query allows UMD to query information different engines and their
1028 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1029 * \param type - \c [in] Hardware IP block type = AMDGPU_HW_IP_*
1030 * \param ip_instance - \c [in] Index of the IP block of the same type.
1031 * \param info - \c [out] Pointer to structure to get information
1033 * \return 0 on success\n
1034 * >0 - AMD specific error code\n
1035 * <0 - Negative POSIX Error code
1037 int amdgpu_query_hw_ip_info(amdgpu_device_handle dev, unsigned type,
1038 unsigned ip_instance,
1039 struct drm_amdgpu_info_hw_ip *info);
1045 * Query heap information
1047 * This query allows UMD to query potentially available memory resources and
1048 * adjust their logic if necessary.
1050 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1051 * \param heap - \c [in] Heap type
1052 * \param info - \c [in] Pointer to structure to get needed information
1054 * \return 0 on success\n
1055 * >0 - AMD specific error code\n
1056 * <0 - Negative POSIX Error code
1059 int amdgpu_query_heap_info(amdgpu_device_handle dev,
1062 struct amdgpu_heap_info *info);
1067 * Get the CRTC ID from the mode object ID
1069 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1070 * \param id - \c [in] Mode object ID
1071 * \param result - \c [in] Pointer to the CRTC ID
1073 * \return 0 on success\n
1074 * >0 - AMD specific error code\n
1075 * <0 - Negative POSIX Error code
1078 int amdgpu_query_crtc_from_id(amdgpu_device_handle dev, unsigned id,
1084 * Query GPU H/w Info
1086 * Query hardware specific information
1088 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1089 * \param heap - \c [in] Heap type
1090 * \param info - \c [in] Pointer to structure to get needed information
1092 * \return 0 on success\n
1093 * >0 - AMD specific error code\n
1094 * <0 - Negative POSIX Error code
1097 int amdgpu_query_gpu_info(amdgpu_device_handle dev,
1098 struct amdgpu_gpu_info *info);
1103 * Query hardware or driver information.
1105 * The return size is query-specific and depends on the "info_id" parameter.
1106 * No more than "size" bytes is returned.
1108 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1109 * \param info_id - \c [in] AMDGPU_INFO_*
1110 * \param size - \c [in] Size of the returned value.
1111 * \param value - \c [out] Pointer to the return value.
1113 * \return 0 on success\n
1114 * >0 - AMD specific error code\n
1115 * <0 - Negative POSIX error code
1118 int amdgpu_query_info(amdgpu_device_handle dev, unsigned info_id,
1119 unsigned size, void *value);
1124 * Read a set of consecutive memory-mapped registers.
1125 * Not all registers are allowed to be read by userspace.
1127 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize(
1128 * \param dword_offset - \c [in] Register offset in dwords
1129 * \param count - \c [in] The number of registers to read starting
1131 * \param instance - \c [in] GRBM_GFX_INDEX selector. It may have other
1132 * uses. Set it to 0xffffffff if unsure.
1133 * \param flags - \c [in] Flags with additional information.
1134 * \param values - \c [out] The pointer to return values.
1136 * \return 0 on success\n
1137 * >0 - AMD specific error code\n
1138 * <0 - Negative POSIX error code
1141 int amdgpu_read_mm_registers(amdgpu_device_handle dev, unsigned dword_offset,
1142 unsigned count, uint32_t instance, uint32_t flags,
1148 * Request GPU access to user allocated memory e.g. via "malloc"
1150 * \param dev - [in] Device handle. See #amdgpu_device_initialize()
1151 * \param cpu - [in] CPU address of user allocated memory which we
1152 * want to map to GPU address space (make GPU accessible)
1153 * (This address must be correctly aligned).
1154 * \param size - [in] Size of allocation (must be correctly aligned)
1155 * \param amdgpu_bo_alloc_result - [out] Handle of allocation to be passed as resource
1156 * on submission and be used in other operations.(e.g. for VA submission)
1157 * ( Temporally defined amdgpu_bo_alloc_result as parameter for return mc address. )
1160 * \return 0 on success
1161 * >0 - AMD specific error code
1162 * <0 - Negative POSIX Error code
1166 * This call doesn't guarantee that such memory will be persistently
1167 * "locked" / make non-pageable. The purpose of this call is to provide
1168 * opportunity for GPU get access to this resource during submission.
1170 * The maximum amount of memory which could be mapped in this call depends
1171 * if overcommit is disabled or not. If overcommit is disabled than the max.
1172 * amount of memory to be pinned will be limited by left "free" size in total
1173 * amount of memory which could be locked simultaneously ("GART" size).
1175 * Supported (theoretical) max. size of mapping is restricted only by
1178 * It is responsibility of caller to correctly specify access rights
1181 int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev,
1184 struct amdgpu_bo_alloc_result *info);
1187 #endif /* #ifdef _AMDGPU_H_ */