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;
237 * Structure to describe GDS partitioning information.
238 * \note OA and GWS resources are asscoiated with GDS partition
240 * \sa amdgpu_gpu_resource_query_gds_info
243 struct amdgpu_gds_resource_info {
244 uint32_t gds_gfx_partition_size;
245 uint32_t compute_partition_size;
246 uint32_t gds_total_size;
247 uint32_t gws_per_gfx_partition;
248 uint32_t gws_per_compute_partition;
249 uint32_t oa_per_gfx_partition;
250 uint32_t oa_per_compute_partition;
254 * Structure describing CS dependency
256 * \sa amdgpu_cs_request, amdgpu_cs_submit()
259 struct amdgpu_cs_dep_info {
260 /** Context to which the fence belongs */
261 amdgpu_context_handle context;
263 /** To which HW IP type the fence belongs */
266 /** IP instance index if there are several IPs of the same type. */
267 uint32_t ip_instance;
269 /** Ring index of the HW IP */
272 /** Specify fence for which we need to check submission status.*/
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).
298 * Structure describing submission request
300 * \note We could have several IBs as packet. e.g. CE, CE, DE case for gfx
302 * \sa amdgpu_cs_submit()
304 struct amdgpu_cs_request {
305 /** Specify flags with additional information */
308 /** Specify HW IP block type to which to send the IB. */
311 /** IP instance index if there are several IPs of the same type. */
312 unsigned ip_instance;
315 * Specify ring index of the IP. We could have several rings
316 * in the same IP. E.g. 0 for SDMA0 and 1 for SDMA1.
321 * List handle with resources used by this request.
323 amdgpu_bo_list_handle resources;
326 * Number of dependencies this Command submission needs to
327 * wait for before starting execution.
329 uint32_t number_of_dependencies;
332 * Array of dependencies which need to be met before
333 * execution can start.
335 struct amdgpu_cs_dep_info *dependencies;
337 /** Number of IBs to submit in the field ibs. */
338 uint32_t number_of_ibs;
341 * IBs to submit. Those IBs will be submit together as single entity
343 struct amdgpu_cs_ib_info *ibs;
347 * Structure describing request to check submission state using fence
349 * \sa amdgpu_cs_query_fence_status()
352 struct amdgpu_cs_query_fence {
354 /** In which context IB was sent to execution */
355 amdgpu_context_handle context;
357 /** Timeout in nanoseconds. */
360 /** To which HW IP type the fence belongs */
363 /** IP instance index if there are several IPs of the same type. */
364 unsigned ip_instance;
366 /** Ring index of the HW IP */
372 /** Specify fence for which we need to check submission status.*/
377 * Structure which provide information about GPU VM MC Address space
378 * alignments requirements
380 * \sa amdgpu_query_buffer_size_alignment
382 struct amdgpu_buffer_size_alignments {
383 /** Size alignment requirement for allocation in
388 * Size alignment requirement for allocation in remote memory
390 uint64_t size_remote;
394 * Structure which provide information about heap
396 * \sa amdgpu_query_heap_info()
399 struct amdgpu_heap_info {
400 /** Theoretical max. available memory in the given heap */
404 * Number of bytes allocated in the heap. This includes all processes
405 * and private allocations in the kernel. It changes when new buffers
406 * are allocated, freed, and moved. It cannot be larger than
412 * Theoretical possible max. size of buffer which
413 * could be allocated in the given heap
415 uint64_t max_allocation;
419 * Describe GPU h/w info needed for UMD correct initialization
421 * \sa amdgpu_query_gpu_info()
423 struct amdgpu_gpu_info {
428 /** Chip external revision */
429 uint32_t chip_external_rev;
434 /** max engine clock*/
435 uint64_t max_engine_clk;
436 /** max memory clock */
437 uint64_t max_memory_clk;
438 /** number of shader engines */
439 uint32_t num_shader_engines;
440 /** number of shader arrays per engine */
441 uint32_t num_shader_arrays_per_engine;
442 /** Number of available good shader pipes */
443 uint32_t avail_quad_shader_pipes;
444 /** Max. number of shader pipes.(including good and bad pipes */
445 uint32_t max_quad_shader_pipes;
446 /** Number of parameter cache entries per shader quad pipe */
447 uint32_t cache_entries_per_quad_pipe;
448 /** Number of available graphics context */
449 uint32_t num_hw_gfx_contexts;
450 /** Number of render backend pipes */
452 /** Enabled render backend pipe mask */
453 uint32_t enabled_rb_pipes_mask;
454 /** Frequency of GPU Counter */
455 uint32_t gpu_counter_freq;
456 /** CC_RB_BACKEND_DISABLE.BACKEND_DISABLE per SE */
457 uint32_t backend_disable[4];
458 /** Value of MC_ARB_RAMCFG register*/
459 uint32_t mc_arb_ramcfg;
460 /** Value of GB_ADDR_CONFIG */
461 uint32_t gb_addr_cfg;
462 /** Values of the GB_TILE_MODE0..31 registers */
463 uint32_t gb_tile_mode[32];
464 /** Values of GB_MACROTILE_MODE0..15 registers */
465 uint32_t gb_macro_tile_mode[16];
466 /** Value of PA_SC_RASTER_CONFIG register per SE */
467 uint32_t pa_sc_raster_cfg[4];
468 /** Value of PA_SC_RASTER_CONFIG_1 register per SE */
469 uint32_t pa_sc_raster_cfg1[4];
471 uint32_t cu_active_number;
473 uint32_t cu_bitmap[4][4];
474 /* video memory type info*/
476 /* video memory bit width*/
477 uint32_t vram_bit_width;
478 /** constant engine ram size*/
479 uint32_t ce_ram_size;
483 /*--------------------------------------------------------------------------*/
484 /*------------------------- Functions --------------------------------------*/
485 /*--------------------------------------------------------------------------*/
488 * Initialization / Cleanup
494 * \param fd - \c [in] File descriptor for AMD GPU device
495 * received previously as the result of
496 * e.g. drmOpen() call.
497 * For legacy fd type, the DRI2/DRI3
498 * authentication should be done before
499 * calling this function.
500 * \param major_version - \c [out] Major version of library. It is assumed
501 * that adding new functionality will cause
502 * increase in major version
503 * \param minor_version - \c [out] Minor version of library
504 * \param device_handle - \c [out] Pointer to opaque context which should
505 * be passed as the first parameter on each
509 * \return 0 on success\n
510 * >0 - AMD specific error code\n
511 * <0 - Negative POSIX Error code
514 * \sa amdgpu_device_deinitialize()
516 int amdgpu_device_initialize(int fd,
517 uint32_t *major_version,
518 uint32_t *minor_version,
519 amdgpu_device_handle *device_handle);
523 * When access to such library does not needed any more the special
524 * function must be call giving opportunity to clean up any
525 * resources if needed.
527 * \param device_handle - \c [in] Context associated with file
528 * descriptor for AMD GPU device
529 * received previously as the
530 * result e.g. of drmOpen() call.
532 * \return 0 on success\n
533 * >0 - AMD specific error code\n
534 * <0 - Negative POSIX Error code
536 * \sa amdgpu_device_initialize()
539 int amdgpu_device_deinitialize(amdgpu_device_handle device_handle);
547 * Allocate memory to be used by UMD for GPU related operations
549 * \param dev - \c [in] Device handle.
550 * See #amdgpu_device_initialize()
551 * \param alloc_buffer - \c [in] Pointer to the structure describing an
553 * \param info - \c [out] Pointer to structure which return
554 * information about allocated memory
556 * \return 0 on success\n
557 * >0 - AMD specific error code\n
558 * <0 - Negative POSIX Error code
560 * \sa amdgpu_bo_free()
562 int amdgpu_bo_alloc(amdgpu_device_handle dev,
563 struct amdgpu_bo_alloc_request *alloc_buffer,
564 struct amdgpu_bo_alloc_result *info);
567 * Associate opaque data with buffer to be queried by another UMD
569 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
570 * \param buf_handle - \c [in] Buffer handle
571 * \param info - \c [in] Metadata to associated with buffer
573 * \return 0 on success\n
574 * >0 - AMD specific error code\n
575 * <0 - Negative POSIX Error code
577 int amdgpu_bo_set_metadata(amdgpu_bo_handle buf_handle,
578 struct amdgpu_bo_metadata *info);
581 * Query buffer information including metadata previusly associated with
584 * \param dev - \c [in] Device handle.
585 * See #amdgpu_device_initialize()
586 * \param buf_handle - \c [in] Buffer handle
587 * \param info - \c [out] Structure describing buffer
589 * \return 0 on success\n
590 * >0 - AMD specific error code\n
591 * <0 - Negative POSIX Error code
593 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_alloc()
595 int amdgpu_bo_query_info(amdgpu_bo_handle buf_handle,
596 struct amdgpu_bo_info *info);
599 * Allow others to get access to buffer
601 * \param dev - \c [in] Device handle.
602 * See #amdgpu_device_initialize()
603 * \param buf_handle - \c [in] Buffer handle
604 * \param type - \c [in] Type of handle requested
605 * \param shared_handle - \c [out] Special "shared" handle
607 * \return 0 on success\n
608 * >0 - AMD specific error code\n
609 * <0 - Negative POSIX Error code
611 * \sa amdgpu_bo_import()
614 int amdgpu_bo_export(amdgpu_bo_handle buf_handle,
615 enum amdgpu_bo_handle_type type,
616 uint32_t *shared_handle);
619 * Request access to "shared" buffer
621 * \param dev - \c [in] Device handle.
622 * See #amdgpu_device_initialize()
623 * \param type - \c [in] Type of handle requested
624 * \param shared_handle - \c [in] Shared handle received as result "import"
626 * \param output - \c [out] Pointer to structure with information
627 * about imported buffer
629 * \return 0 on success\n
630 * >0 - AMD specific error code\n
631 * <0 - Negative POSIX Error code
633 * \note Buffer must be "imported" only using new "fd" (different from
634 * one used by "exporter").
636 * \sa amdgpu_bo_export()
639 int amdgpu_bo_import(amdgpu_device_handle dev,
640 enum amdgpu_bo_handle_type type,
641 uint32_t shared_handle,
642 struct amdgpu_bo_import_result *output);
645 * Request GPU access to user allocated memory e.g. via "malloc"
647 * \param dev - [in] Device handle. See #amdgpu_device_initialize()
648 * \param cpu - [in] CPU address of user allocated memory which we
649 * want to map to GPU address space (make GPU accessible)
650 * (This address must be correctly aligned).
651 * \param size - [in] Size of allocation (must be correctly aligned)
652 * \param amdgpu_bo_alloc_result - [out] Handle of allocation to be passed as
653 * resource on submission and be used in other operations.
656 * \return 0 on success
657 * >0 - AMD specific error code
658 * <0 - Negative POSIX Error code
661 * This call doesn't guarantee that such memory will be persistently
662 * "locked" / make non-pageable. The purpose of this call is to provide
663 * opportunity for GPU get access to this resource during submission.
665 * The maximum amount of memory which could be mapped in this call depends
666 * if overcommit is disabled or not. If overcommit is disabled than the max.
667 * amount of memory to be pinned will be limited by left "free" size in total
668 * amount of memory which could be locked simultaneously ("GART" size).
670 * Supported (theoretical) max. size of mapping is restricted only by
673 * It is responsibility of caller to correctly specify access rights
676 int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev,
677 void *cpu, uint64_t size,
678 struct amdgpu_bo_alloc_result *info);
681 * Free previosuly allocated memory
683 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
684 * \param buf_handle - \c [in] Buffer handle to free
686 * \return 0 on success\n
687 * >0 - AMD specific error code\n
688 * <0 - Negative POSIX Error code
690 * \note In the case of memory shared between different applications all
691 * resources will be “physically” freed only all such applications
693 * \note If is UMD responsibility to ‘free’ buffer only when there is no
696 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_alloc()
699 int amdgpu_bo_free(amdgpu_bo_handle buf_handle);
702 * Request CPU access to GPU accessable memory
704 * \param buf_handle - \c [in] Buffer handle
705 * \param cpu - \c [out] CPU address to be used for access
707 * \return 0 on success\n
708 * >0 - AMD specific error code\n
709 * <0 - Negative POSIX Error code
711 * \sa amdgpu_bo_cpu_unmap()
714 int amdgpu_bo_cpu_map(amdgpu_bo_handle buf_handle, void **cpu);
717 * Release CPU access to GPU memory
719 * \param buf_handle - \c [in] Buffer handle
721 * \return 0 on success\n
722 * >0 - AMD specific error code\n
723 * <0 - Negative POSIX Error code
725 * \sa amdgpu_bo_cpu_map()
728 int amdgpu_bo_cpu_unmap(amdgpu_bo_handle buf_handle);
731 * Wait until a buffer is not used by the device.
733 * \param dev - \c [in] Device handle. See #amdgpu_lib_initialize()
734 * \param buf_handle - \c [in] Buffer handle.
735 * \param timeout_ns - Timeout in nanoseconds.
736 * \param buffer_busy - 0 if buffer is idle, all GPU access was completed
737 * and no GPU access is scheduled.
738 * 1 GPU access is in fly or scheduled
740 * \return 0 - on success
741 * >0 - AMD specific error code
742 * <0 - Negative POSIX Error code
744 int amdgpu_bo_wait_for_idle(amdgpu_bo_handle buf_handle,
749 * Creates a BO list handle for command submission.
751 * \param dev - \c [in] Device handle.
752 * See #amdgpu_device_initialize()
753 * \param number_of_resources - \c [in] Number of BOs in the list
754 * \param resources - \c [in] List of BO handles
755 * \param resource_prios - \c [in] Optional priority for each handle
756 * \param result - \c [out] Created BO list handle
758 * \return 0 on success\n
759 * >0 - AMD specific error code\n
760 * <0 - Negative POSIX Error code
762 * \sa amdgpu_bo_list_destroy()
764 int amdgpu_bo_list_create(amdgpu_device_handle dev,
765 uint32_t number_of_resources,
766 amdgpu_bo_handle *resources,
767 uint8_t *resource_prios,
768 amdgpu_bo_list_handle *result);
771 * Destroys a BO list handle.
773 * \param handle - \c [in] BO list handle.
775 * \return 0 on success\n
776 * >0 - AMD specific error code\n
777 * <0 - Negative POSIX Error code
779 * \sa amdgpu_bo_list_create()
781 int amdgpu_bo_list_destroy(amdgpu_bo_list_handle handle);
784 * Update resources for existing BO list
786 * \param handle - \c [in] BO list handle
787 * \param number_of_resources - \c [in] Number of BOs in the list
788 * \param resources - \c [in] List of BO handles
789 * \param resource_prios - \c [in] Optional priority for each handle
791 * \return 0 on success\n
792 * >0 - AMD specific error code\n
793 * <0 - Negative POSIX Error code
795 * \sa amdgpu_bo_list_update()
797 int amdgpu_bo_list_update(amdgpu_bo_list_handle handle,
798 uint32_t number_of_resources,
799 amdgpu_bo_handle *resources,
800 uint8_t *resource_prios);
803 * GPU Execution context
808 * Create GPU execution Context
810 * For the purpose of GPU Scheduler and GPU Robustness extensions it is
811 * necessary to have information/identify rendering/compute contexts.
812 * It also may be needed to associate some specific requirements with such
813 * contexts. Kernel driver will guarantee that submission from the same
814 * context will always be executed in order (first come, first serve).
817 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
818 * \param context - \c [out] GPU Context handle
820 * \return 0 on success\n
821 * >0 - AMD specific error code\n
822 * <0 - Negative POSIX Error code
824 * \sa amdgpu_cs_ctx_free()
827 int amdgpu_cs_ctx_create(amdgpu_device_handle dev,
828 amdgpu_context_handle *context);
832 * Destroy GPU execution context when not needed any more
834 * \param context - \c [in] GPU Context handle
836 * \return 0 on success\n
837 * >0 - AMD specific error code\n
838 * <0 - Negative POSIX Error code
840 * \sa amdgpu_cs_ctx_create()
843 int amdgpu_cs_ctx_free(amdgpu_context_handle context);
846 * Query reset state for the specific GPU Context
848 * \param context - \c [in] GPU Context handle
849 * \param state - \c [out] One of AMDGPU_CTX_*_RESET
850 * \param hangs - \c [out] Number of hangs caused by the context.
852 * \return 0 on success\n
853 * >0 - AMD specific error code\n
854 * <0 - Negative POSIX Error code
856 * \sa amdgpu_cs_ctx_create()
859 int amdgpu_cs_query_reset_state(amdgpu_context_handle context,
860 uint32_t *state, uint32_t *hangs);
863 * Command Buffers Management
868 * Send request to submit command buffers to hardware.
870 * Kernel driver could use GPU Scheduler to make decision when physically
871 * sent this request to the hardware. Accordingly this request could be put
872 * in queue and sent for execution later. The only guarantee is that request
873 * from the same GPU context to the same ip:ip_instance:ring will be executed in
877 * \param dev - \c [in] Device handle.
878 * See #amdgpu_device_initialize()
879 * \param context - \c [in] GPU Context
880 * \param flags - \c [in] Global submission flags
881 * \param ibs_request - \c [in] Pointer to submission requests.
882 * We could submit to the several
883 * engines/rings simulteniously as
885 * \param number_of_requests - \c [in] Number of submission requests
886 * \param fences - \c [out] Pointer to array of data to get
887 * fences to identify submission
888 * requests. Timestamps are valid
889 * in this GPU context and could be used
890 * to identify/detect completion of
893 * \return 0 on success\n
894 * >0 - AMD specific error code\n
895 * <0 - Negative POSIX Error code
897 * \note It is required to pass correct resource list with buffer handles
898 * which will be accessible by command buffers from submission
899 * This will allow kernel driver to correctly implement "paging".
900 * Failure to do so will have unpredictable results.
902 * \sa amdgpu_command_buffer_alloc(), amdgpu_command_buffer_free(),
903 * amdgpu_cs_query_fence_status()
906 int amdgpu_cs_submit(amdgpu_context_handle context,
908 struct amdgpu_cs_request *ibs_request,
909 uint32_t number_of_requests,
913 * Query status of Command Buffer Submission
915 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
916 * \param fence - \c [in] Structure describing fence to query
917 * \param expired - \c [out] If fence expired or not.\n
918 * 0 – if fence is not expired\n
921 * \return 0 on success\n
922 * >0 - AMD specific error code\n
923 * <0 - Negative POSIX Error code
925 * \note If UMD wants only to check operation status and returned immediately
926 * then timeout value as 0 must be passed. In this case success will be
927 * returned in the case if submission was completed or timeout error
930 * \sa amdgpu_cs_submit()
932 int amdgpu_cs_query_fence_status(struct amdgpu_cs_query_fence *fence,
941 * Query allocation size alignments
943 * UMD should query information about GPU VM MC size alignments requirements
944 * to be able correctly choose required allocation size and implement
945 * internal optimization if needed.
947 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
948 * \param info - \c [out] Pointer to structure to get size alignment
951 * \return 0 on success\n
952 * >0 - AMD specific error code\n
953 * <0 - Negative POSIX Error code
956 int amdgpu_query_buffer_size_alignment(amdgpu_device_handle dev,
957 struct amdgpu_buffer_size_alignments
961 * Query firmware versions
963 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
964 * \param fw_type - \c [in] AMDGPU_INFO_FW_*
965 * \param ip_instance - \c [in] Index of the IP block of the same type.
966 * \param index - \c [in] Index of the engine. (for SDMA and MEC)
967 * \param version - \c [out] Pointer to to the "version" return value
968 * \param feature - \c [out] Pointer to to the "feature" return value
970 * \return 0 on success\n
971 * >0 - AMD specific error code\n
972 * <0 - Negative POSIX Error code
975 int amdgpu_query_firmware_version(amdgpu_device_handle dev, unsigned fw_type,
976 unsigned ip_instance, unsigned index,
977 uint32_t *version, uint32_t *feature);
980 * Query the number of HW IP instances of a certain type.
982 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
983 * \param type - \c [in] Hardware IP block type = AMDGPU_HW_IP_*
984 * \param count - \c [out] Pointer to structure to get information
986 * \return 0 on success\n
987 * >0 - AMD specific error code\n
988 * <0 - Negative POSIX Error code
990 int amdgpu_query_hw_ip_count(amdgpu_device_handle dev, unsigned type,
994 * Query engine information
996 * This query allows UMD to query information different engines and their
999 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1000 * \param type - \c [in] Hardware IP block type = AMDGPU_HW_IP_*
1001 * \param ip_instance - \c [in] Index of the IP block of the same type.
1002 * \param info - \c [out] Pointer to structure to get information
1004 * \return 0 on success\n
1005 * >0 - AMD specific error code\n
1006 * <0 - Negative POSIX Error code
1008 int amdgpu_query_hw_ip_info(amdgpu_device_handle dev, unsigned type,
1009 unsigned ip_instance,
1010 struct drm_amdgpu_info_hw_ip *info);
1013 * Query heap information
1015 * This query allows UMD to query potentially available memory resources and
1016 * adjust their logic if necessary.
1018 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1019 * \param heap - \c [in] Heap type
1020 * \param info - \c [in] Pointer to structure to get needed information
1022 * \return 0 on success\n
1023 * >0 - AMD specific error code\n
1024 * <0 - Negative POSIX Error code
1027 int amdgpu_query_heap_info(amdgpu_device_handle dev, uint32_t heap,
1028 uint32_t flags, struct amdgpu_heap_info *info);
1031 * Get the CRTC ID from the mode object ID
1033 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1034 * \param id - \c [in] Mode object ID
1035 * \param result - \c [in] Pointer to the CRTC ID
1037 * \return 0 on success\n
1038 * >0 - AMD specific error code\n
1039 * <0 - Negative POSIX Error code
1042 int amdgpu_query_crtc_from_id(amdgpu_device_handle dev, unsigned id,
1046 * Query GPU H/w Info
1048 * Query hardware specific information
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_gpu_info(amdgpu_device_handle dev,
1060 struct amdgpu_gpu_info *info);
1063 * Query hardware or driver information.
1065 * The return size is query-specific and depends on the "info_id" parameter.
1066 * No more than "size" bytes is returned.
1068 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1069 * \param info_id - \c [in] AMDGPU_INFO_*
1070 * \param size - \c [in] Size of the returned value.
1071 * \param value - \c [out] Pointer to the return value.
1073 * \return 0 on success\n
1074 * >0 - AMD specific error code\n
1075 * <0 - Negative POSIX error code
1078 int amdgpu_query_info(amdgpu_device_handle dev, unsigned info_id,
1079 unsigned size, void *value);
1082 * Query information about GDS
1084 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1085 * \param gds_info - \c [out] Pointer to structure to get GDS information
1087 * \return 0 on success\n
1088 * >0 - AMD specific error code\n
1089 * <0 - Negative POSIX Error code
1092 int amdgpu_query_gds_info(amdgpu_device_handle dev,
1093 struct amdgpu_gds_resource_info *gds_info);
1096 * Read a set of consecutive memory-mapped registers.
1097 * Not all registers are allowed to be read by userspace.
1099 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize(
1100 * \param dword_offset - \c [in] Register offset in dwords
1101 * \param count - \c [in] The number of registers to read starting
1103 * \param instance - \c [in] GRBM_GFX_INDEX selector. It may have other
1104 * uses. Set it to 0xffffffff if unsure.
1105 * \param flags - \c [in] Flags with additional information.
1106 * \param values - \c [out] The pointer to return values.
1108 * \return 0 on success\n
1109 * >0 - AMD specific error code\n
1110 * <0 - Negative POSIX error code
1113 int amdgpu_read_mm_registers(amdgpu_device_handle dev, unsigned dword_offset,
1114 unsigned count, uint32_t instance, uint32_t flags,
1117 #endif /* #ifdef _AMDGPU_H_ */