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;
255 * Structure describing IB
257 * \sa amdgpu_cs_request, amdgpu_cs_submit()
260 struct amdgpu_cs_ib_info {
264 /** Virtual MC address of the command buffer */
265 uint64_t ib_mc_address;
268 * Size of Command Buffer to be submitted.
269 * - The size is in units of dwords (4 bytes).
270 * - Must be less or equal to the size of allocated IB
277 * Structure describing submission request
279 * \note We could have several IBs as packet. e.g. CE, CE, DE case for gfx
281 * \sa amdgpu_cs_submit()
283 struct amdgpu_cs_request {
284 /** Specify flags with additional information */
287 /** Specify HW IP block type to which to send the IB. */
290 /** IP instance index if there are several IPs of the same type. */
291 unsigned ip_instance;
294 * Specify ring index of the IP. We could have several rings
295 * in the same IP. E.g. 0 for SDMA0 and 1 for SDMA1.
300 * List handle with resources used by this request.
302 amdgpu_bo_list_handle resources;
304 /** Number of IBs to submit in the field ibs. */
305 uint32_t number_of_ibs;
308 * IBs to submit. Those IBs will be submit together as single entity
310 struct amdgpu_cs_ib_info *ibs;
314 * Structure describing request to check submission state using fence
316 * \sa amdgpu_cs_query_fence_status()
319 struct amdgpu_cs_query_fence {
321 /** In which context IB was sent to execution */
322 amdgpu_context_handle context;
324 /** Timeout in nanoseconds. */
327 /** To which HW IP type the fence belongs */
330 /** IP instance index if there are several IPs of the same type. */
331 unsigned ip_instance;
333 /** Ring index of the HW IP */
339 /** Specify fence for which we need to check
340 * submission status.*/
345 * Structure which provide information about GPU VM MC Address space
346 * alignments requirements
348 * \sa amdgpu_query_buffer_size_alignment
350 struct amdgpu_buffer_size_alignments {
351 /** Size alignment requirement for allocation in
356 * Size alignment requirement for allocation in remote memory
358 uint64_t size_remote;
363 * Structure which provide information about heap
365 * \sa amdgpu_query_heap_info()
368 struct amdgpu_heap_info {
369 /** Theoretical max. available memory in the given heap */
373 * Number of bytes allocated in the heap. This includes all processes
374 * and private allocations in the kernel. It changes when new buffers
375 * are allocated, freed, and moved. It cannot be larger than
381 * Theoretical possible max. size of buffer which
382 * could be allocated in the given heap
384 uint64_t max_allocation;
390 * Describe GPU h/w info needed for UMD correct initialization
392 * \sa amdgpu_query_gpu_info()
394 struct amdgpu_gpu_info {
397 /**< Chip revision */
399 /** Chip external revision */
400 uint32_t chip_external_rev;
405 /** max engine clock*/
406 uint64_t max_engine_clk;
407 /** max memory clock */
408 uint64_t max_memory_clk;
409 /** number of shader engines */
410 uint32_t num_shader_engines;
411 /** number of shader arrays per engine */
412 uint32_t num_shader_arrays_per_engine;
413 /** Number of available good shader pipes */
414 uint32_t avail_quad_shader_pipes;
415 /** Max. number of shader pipes.(including good and bad pipes */
416 uint32_t max_quad_shader_pipes;
417 /** Number of parameter cache entries per shader quad pipe */
418 uint32_t cache_entries_per_quad_pipe;
419 /** Number of available graphics context */
420 uint32_t num_hw_gfx_contexts;
421 /** Number of render backend pipes */
423 /** Enabled render backend pipe mask */
424 uint32_t enabled_rb_pipes_mask;
425 /** Frequency of GPU Counter */
426 uint32_t gpu_counter_freq;
427 /** CC_RB_BACKEND_DISABLE.BACKEND_DISABLE per SE */
428 uint32_t backend_disable[4];
429 /** Value of MC_ARB_RAMCFG register*/
430 uint32_t mc_arb_ramcfg;
431 /** Value of GB_ADDR_CONFIG */
432 uint32_t gb_addr_cfg;
433 /** Values of the GB_TILE_MODE0..31 registers */
434 uint32_t gb_tile_mode[32];
435 /** Values of GB_MACROTILE_MODE0..15 registers */
436 uint32_t gb_macro_tile_mode[16];
437 /** Value of PA_SC_RASTER_CONFIG register per SE */
438 uint32_t pa_sc_raster_cfg[4];
439 /** Value of PA_SC_RASTER_CONFIG_1 register per SE */
440 uint32_t pa_sc_raster_cfg1[4];
442 uint32_t cu_active_number;
444 uint32_t cu_bitmap[4][4];
445 /* video memory type info*/
447 /* video memory bit width*/
448 uint32_t vram_bit_width;
449 /** constant engine ram size*/
450 uint32_t ce_ram_size;
454 /*--------------------------------------------------------------------------*/
455 /*------------------------- Functions --------------------------------------*/
456 /*--------------------------------------------------------------------------*/
459 * Initialization / Cleanup
466 * \param fd - \c [in] File descriptor for AMD GPU device
467 * received previously as the result of
468 * e.g. drmOpen() call.
469 * For legacy fd type, the DRI2/DRI3 authentication
470 * should be done before calling this function.
471 * \param major_version - \c [out] Major version of library. It is assumed
472 * that adding new functionality will cause
473 * increase in major version
474 * \param minor_version - \c [out] Minor version of library
475 * \param device_handle - \c [out] Pointer to opaque context which should
476 * be passed as the first parameter on each
480 * \return 0 on success\n
481 * >0 - AMD specific error code\n
482 * <0 - Negative POSIX Error code
485 * \sa amdgpu_device_deinitialize()
487 int amdgpu_device_initialize(int fd,
488 uint32_t *major_version,
489 uint32_t *minor_version,
490 amdgpu_device_handle *device_handle);
496 * When access to such library does not needed any more the special
497 * function must be call giving opportunity to clean up any
498 * resources if needed.
500 * \param device_handle - \c [in] Context associated with file
501 * descriptor for AMD GPU device
502 * received previously as the
503 * result e.g. of drmOpen() call.
505 * \return 0 on success\n
506 * >0 - AMD specific error code\n
507 * <0 - Negative POSIX Error code
509 * \sa amdgpu_device_initialize()
512 int amdgpu_device_deinitialize(amdgpu_device_handle device_handle);
521 * Allocate memory to be used by UMD for GPU related operations
523 * \param dev - \c [in] Device handle.
524 * See #amdgpu_device_initialize()
525 * \param alloc_buffer - \c [in] Pointer to the structure describing an
527 * \param info - \c [out] Pointer to structure which return
528 * information about allocated memory
530 * \return 0 on success\n
531 * >0 - AMD specific error code\n
532 * <0 - Negative POSIX Error code
534 * \sa amdgpu_bo_free()
536 int amdgpu_bo_alloc(amdgpu_device_handle dev,
537 struct amdgpu_bo_alloc_request *alloc_buffer,
538 struct amdgpu_bo_alloc_result *info);
541 * Associate opaque data with buffer to be queried by another UMD
543 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
544 * \param buf_handle - \c [in] Buffer handle
545 * \param info - \c [in] Metadata to associated with buffer
547 * \return 0 on success\n
548 * >0 - AMD specific error code\n
549 * <0 - Negative POSIX Error code
551 int amdgpu_bo_set_metadata(amdgpu_bo_handle buf_handle,
552 struct amdgpu_bo_metadata *info);
555 * Query buffer information including metadata previusly associated with
558 * \param dev - \c [in] Device handle.
559 * See #amdgpu_device_initialize()
560 * \param buf_handle - \c [in] Buffer handle
561 * \param info - \c [out] Structure describing buffer
563 * \return 0 on success\n
564 * >0 - AMD specific error code\n
565 * <0 - Negative POSIX Error code
567 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_alloc()
569 int amdgpu_bo_query_info(amdgpu_bo_handle buf_handle,
570 struct amdgpu_bo_info *info);
573 * Allow others to get access to buffer
575 * \param dev - \c [in] Device handle.
576 * See #amdgpu_device_initialize()
577 * \param buf_handle - \c [in] Buffer handle
578 * \param type - \c [in] Type of handle requested
579 * \param shared_handle - \c [out] Special "shared" handle
581 * \return 0 on success\n
582 * >0 - AMD specific error code\n
583 * <0 - Negative POSIX Error code
585 * \sa amdgpu_bo_import()
588 int amdgpu_bo_export(amdgpu_bo_handle buf_handle,
589 enum amdgpu_bo_handle_type type,
590 uint32_t *shared_handle);
593 * Request access to "shared" buffer
595 * \param dev - \c [in] Device handle.
596 * See #amdgpu_device_initialize()
597 * \param type - \c [in] Type of handle requested
598 * \param shared_handle - \c [in] Shared handle received as result "import"
600 * \param output - \c [out] Pointer to structure with information
601 * about imported buffer
603 * \return 0 on success\n
604 * >0 - AMD specific error code\n
605 * <0 - Negative POSIX Error code
607 * \note Buffer must be "imported" only using new "fd" (different from
608 * one used by "exporter").
610 * \sa amdgpu_bo_export()
613 int amdgpu_bo_import(amdgpu_device_handle dev,
614 enum amdgpu_bo_handle_type type,
615 uint32_t shared_handle,
616 struct amdgpu_bo_import_result *output);
619 * Free previosuly allocated memory
621 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
622 * \param buf_handle - \c [in] Buffer handle to free
624 * \return 0 on success\n
625 * >0 - AMD specific error code\n
626 * <0 - Negative POSIX Error code
628 * \note In the case of memory shared between different applications all
629 * resources will be “physically” freed only all such applications
631 * \note If is UMD responsibility to ‘free’ buffer only when there is no
634 * \sa amdgpu_bo_set_metadata(), amdgpu_bo_alloc()
637 int amdgpu_bo_free(amdgpu_bo_handle buf_handle);
640 * Request CPU access to GPU accessable memory
642 * \param buf_handle - \c [in] Buffer handle
643 * \param cpu - \c [out] CPU address to be used for access
645 * \return 0 on success\n
646 * >0 - AMD specific error code\n
647 * <0 - Negative POSIX Error code
649 * \sa amdgpu_bo_cpu_unmap()
652 int amdgpu_bo_cpu_map(amdgpu_bo_handle buf_handle, void **cpu);
655 * Release CPU access to GPU memory
657 * \param buf_handle - \c [in] Buffer handle
659 * \return 0 on success\n
660 * >0 - AMD specific error code\n
661 * <0 - Negative POSIX Error code
663 * \sa amdgpu_bo_cpu_map()
666 int amdgpu_bo_cpu_unmap(amdgpu_bo_handle buf_handle);
670 * Wait until a buffer is not used by the device.
672 * \param dev - \c [in] Device handle. See #amdgpu_lib_initialize()
673 * \param buf_handle - \c [in] Buffer handle.
674 * \param timeout_ns - Timeout in nanoseconds.
675 * \param buffer_busy - 0 if buffer is idle, all GPU access was completed
676 * and no GPU access is scheduled.
677 * 1 GPU access is in fly or scheduled
679 * \return 0 - on success
680 * <0 - AMD specific error code
682 int amdgpu_bo_wait_for_idle(amdgpu_bo_handle buf_handle,
687 * Creates a BO list handle for command submission.
689 * \param dev - \c [in] Device handle.
690 * See #amdgpu_device_initialize()
691 * \param number_of_resources - \c [in] Number of BOs in the list
692 * \param resources - \c [in] List of BO handles
693 * \param resource_prios - \c [in] Optional priority for each handle
694 * \param result - \c [out] Created BO list handle
696 * \return 0 on success\n
697 * >0 - AMD specific error code\n
698 * <0 - Negative POSIX Error code
700 * \sa amdgpu_bo_list_destroy()
702 int amdgpu_bo_list_create(amdgpu_device_handle dev,
703 uint32_t number_of_resources,
704 amdgpu_bo_handle *resources,
705 uint8_t *resource_prios,
706 amdgpu_bo_list_handle *result);
709 * Destroys a BO list handle.
711 * \param handle - \c [in] BO list handle.
713 * \return 0 on success\n
714 * >0 - AMD specific error code\n
715 * <0 - Negative POSIX Error code
717 * \sa amdgpu_bo_list_create()
719 int amdgpu_bo_list_destroy(amdgpu_bo_list_handle handle);
722 * Update resources for existing BO list
724 * \param handle - \c [in] BO list handle
725 * \param number_of_resources - \c [in] Number of BOs in the list
726 * \param resources - \c [in] List of BO handles
727 * \param resource_prios - \c [in] Optional priority for each handle
729 * \return 0 on success\n
730 * >0 - AMD specific error code\n
731 * <0 - Negative POSIX Error code
733 * \sa amdgpu_bo_list_update()
735 int amdgpu_bo_list_update(amdgpu_bo_list_handle handle,
736 uint32_t number_of_resources,
737 amdgpu_bo_handle *resources,
738 uint8_t *resource_prios);
741 * Special GPU Resources
748 * Query information about GDS
750 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
751 * \param gds_info - \c [out] Pointer to structure to get GDS information
753 * \return 0 on success\n
754 * >0 - AMD specific error code\n
755 * <0 - Negative POSIX Error code
758 int amdgpu_query_gds_info(amdgpu_device_handle dev,
759 struct amdgpu_gds_resource_info *gds_info);
763 * GPU Execution context
768 * Create GPU execution Context
770 * For the purpose of GPU Scheduler and GPU Robustness extensions it is
771 * necessary to have information/identify rendering/compute contexts.
772 * It also may be needed to associate some specific requirements with such
773 * contexts. Kernel driver will guarantee that submission from the same
774 * context will always be executed in order (first come, first serve).
777 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
778 * \param context - \c [out] GPU Context handle
780 * \return 0 on success\n
781 * >0 - AMD specific error code\n
782 * <0 - Negative POSIX Error code
784 * \sa amdgpu_cs_ctx_free()
787 int amdgpu_cs_ctx_create(amdgpu_device_handle dev,
788 amdgpu_context_handle *context);
792 * Destroy GPU execution context when not needed any more
794 * \param context - \c [in] GPU Context handle
796 * \return 0 on success\n
797 * >0 - AMD specific error code\n
798 * <0 - Negative POSIX Error code
800 * \sa amdgpu_cs_ctx_create()
803 int amdgpu_cs_ctx_free(amdgpu_context_handle context);
806 * Query reset state for the specific GPU Context
808 * \param context - \c [in] GPU Context handle
809 * \param state - \c [out] One of AMDGPU_CTX_*_RESET
810 * \param hangs - \c [out] Number of hangs caused by the context.
812 * \return 0 on success\n
813 * >0 - AMD specific error code\n
814 * <0 - Negative POSIX Error code
816 * \sa amdgpu_cs_ctx_create()
819 int amdgpu_cs_query_reset_state(amdgpu_context_handle context,
820 uint32_t *state, uint32_t *hangs);
824 * Command Buffers Management
829 * Send request to submit command buffers to hardware.
831 * Kernel driver could use GPU Scheduler to make decision when physically
832 * sent this request to the hardware. Accordingly this request could be put
833 * in queue and sent for execution later. The only guarantee is that request
834 * from the same GPU context to the same ip:ip_instance:ring will be executed in
838 * \param dev - \c [in] Device handle.
839 * See #amdgpu_device_initialize()
840 * \param context - \c [in] GPU Context
841 * \param flags - \c [in] Global submission flags
842 * \param ibs_request - \c [in] Pointer to submission requests.
843 * We could submit to the several
844 * engines/rings simulteniously as
846 * \param number_of_requests - \c [in] Number of submission requests
847 * \param fences - \c [out] Pointer to array of data to get
848 * fences to identify submission
849 * requests. Timestamps are valid
850 * in this GPU context and could be used
851 * to identify/detect completion of
854 * \return 0 on success\n
855 * >0 - AMD specific error code\n
856 * <0 - Negative POSIX Error code
858 * \note It is required to pass correct resource list with buffer handles
859 * which will be accessible by command buffers from submission
860 * This will allow kernel driver to correctly implement "paging".
861 * Failure to do so will have unpredictable results.
863 * \sa amdgpu_command_buffer_alloc(), amdgpu_command_buffer_free(),
864 * amdgpu_cs_query_fence_status()
867 int amdgpu_cs_submit(amdgpu_context_handle context,
869 struct amdgpu_cs_request *ibs_request,
870 uint32_t number_of_requests,
874 * Query status of Command Buffer Submission
876 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
877 * \param fence - \c [in] Structure describing fence to query
878 * \param expired - \c [out] If fence expired or not.\n
879 * 0 – if fence is not expired\n
882 * \return 0 on success\n
883 * >0 - AMD specific error code\n
884 * <0 - Negative POSIX Error code
886 * \note If UMD wants only to check operation status and returned immediately
887 * then timeout value as 0 must be passed. In this case success will be
888 * returned in the case if submission was completed or timeout error
891 * \sa amdgpu_cs_submit()
893 int amdgpu_cs_query_fence_status(struct amdgpu_cs_query_fence *fence,
904 * Query allocation size alignments
906 * UMD should query information about GPU VM MC size alignments requirements
907 * to be able correctly choose required allocation size and implement
908 * internal optimization if needed.
910 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
911 * \param info - \c [out] Pointer to structure to get size alignment
914 * \return 0 on success\n
915 * >0 - AMD specific error code\n
916 * <0 - Negative POSIX Error code
919 int amdgpu_query_buffer_size_alignment(amdgpu_device_handle dev,
920 struct amdgpu_buffer_size_alignments
926 * Query firmware versions
928 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
929 * \param fw_type - \c [in] AMDGPU_INFO_FW_*
930 * \param ip_instance - \c [in] Index of the IP block of the same type.
931 * \param index - \c [in] Index of the engine. (for SDMA and MEC)
932 * \param version - \c [out] Pointer to to the "version" return value
933 * \param feature - \c [out] Pointer to to the "feature" return value
935 * \return 0 on success\n
936 * >0 - AMD specific error code\n
937 * <0 - Negative POSIX Error code
940 int amdgpu_query_firmware_version(amdgpu_device_handle dev, unsigned fw_type,
941 unsigned ip_instance, unsigned index,
942 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 - AMD specific error code\n
955 * <0 - Negative POSIX Error code
957 int amdgpu_query_hw_ip_count(amdgpu_device_handle dev, unsigned type,
963 * Query engine information
965 * This query allows UMD to query information different engines and their
968 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
969 * \param type - \c [in] Hardware IP block type = AMDGPU_HW_IP_*
970 * \param ip_instance - \c [in] Index of the IP block of the same type.
971 * \param info - \c [out] Pointer to structure to get information
973 * \return 0 on success\n
974 * >0 - AMD specific error code\n
975 * <0 - Negative POSIX Error code
977 int amdgpu_query_hw_ip_info(amdgpu_device_handle dev, unsigned type,
978 unsigned ip_instance,
979 struct drm_amdgpu_info_hw_ip *info);
985 * Query heap information
987 * This query allows UMD to query potentially available memory resources and
988 * adjust their logic if necessary.
990 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
991 * \param heap - \c [in] Heap type
992 * \param info - \c [in] Pointer to structure to get needed information
994 * \return 0 on success\n
995 * >0 - AMD specific error code\n
996 * <0 - Negative POSIX Error code
999 int amdgpu_query_heap_info(amdgpu_device_handle dev,
1002 struct amdgpu_heap_info *info);
1007 * Get the CRTC ID from the mode object ID
1009 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1010 * \param id - \c [in] Mode object ID
1011 * \param result - \c [in] Pointer to the CRTC ID
1013 * \return 0 on success\n
1014 * >0 - AMD specific error code\n
1015 * <0 - Negative POSIX Error code
1018 int amdgpu_query_crtc_from_id(amdgpu_device_handle dev, unsigned id,
1024 * Query GPU H/w Info
1026 * Query hardware specific information
1028 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1029 * \param heap - \c [in] Heap type
1030 * \param info - \c [in] Pointer to structure to get needed information
1032 * \return 0 on success\n
1033 * >0 - AMD specific error code\n
1034 * <0 - Negative POSIX Error code
1037 int amdgpu_query_gpu_info(amdgpu_device_handle dev,
1038 struct amdgpu_gpu_info *info);
1043 * Query hardware or driver information.
1045 * The return size is query-specific and depends on the "info_id" parameter.
1046 * No more than "size" bytes is returned.
1048 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
1049 * \param info_id - \c [in] AMDGPU_INFO_*
1050 * \param size - \c [in] Size of the returned value.
1051 * \param value - \c [out] Pointer to the return value.
1053 * \return 0 on success\n
1054 * >0 - AMD specific error code\n
1055 * <0 - Negative POSIX error code
1058 int amdgpu_query_info(amdgpu_device_handle dev, unsigned info_id,
1059 unsigned size, void *value);
1064 * Read a set of consecutive memory-mapped registers.
1065 * Not all registers are allowed to be read by userspace.
1067 * \param dev - \c [in] Device handle. See #amdgpu_device_initialize(
1068 * \param dword_offset - \c [in] Register offset in dwords
1069 * \param count - \c [in] The number of registers to read starting
1071 * \param instance - \c [in] GRBM_GFX_INDEX selector. It may have other
1072 * uses. Set it to 0xffffffff if unsure.
1073 * \param flags - \c [in] Flags with additional information.
1074 * \param values - \c [out] The pointer to return values.
1076 * \return 0 on success\n
1077 * >0 - AMD specific error code\n
1078 * <0 - Negative POSIX error code
1081 int amdgpu_read_mm_registers(amdgpu_device_handle dev, unsigned dword_offset,
1082 unsigned count, uint32_t instance, uint32_t flags,
1088 * Request GPU access to user allocated memory e.g. via "malloc"
1090 * \param dev - [in] Device handle. See #amdgpu_device_initialize()
1091 * \param cpu - [in] CPU address of user allocated memory which we
1092 * want to map to GPU address space (make GPU accessible)
1093 * (This address must be correctly aligned).
1094 * \param size - [in] Size of allocation (must be correctly aligned)
1095 * \param amdgpu_bo_alloc_result - [out] Handle of allocation to be passed as resource
1096 * on submission and be used in other operations.(e.g. for VA submission)
1097 * ( Temporally defined amdgpu_bo_alloc_result as parameter for return mc address. )
1100 * \return 0 on success
1101 * >0 - AMD specific error code
1102 * <0 - Negative POSIX Error code
1106 * This call doesn't guarantee that such memory will be persistently
1107 * "locked" / make non-pageable. The purpose of this call is to provide
1108 * opportunity for GPU get access to this resource during submission.
1110 * The maximum amount of memory which could be mapped in this call depends
1111 * if overcommit is disabled or not. If overcommit is disabled than the max.
1112 * amount of memory to be pinned will be limited by left "free" size in total
1113 * amount of memory which could be locked simultaneously ("GART" size).
1115 * Supported (theoretical) max. size of mapping is restricted only by
1118 * It is responsibility of caller to correctly specify access rights
1121 int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev,
1124 struct amdgpu_bo_alloc_result *info);
1127 #endif /* #ifdef _AMDGPU_H_ */