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.
24 * This file defines the private interface between the
25 * AMD kernel graphics drivers and the AMD KFD.
28 #ifndef KGD_KFD_INTERFACE_H_INCLUDED
29 #define KGD_KFD_INTERFACE_H_INCLUDED
31 #include <linux/types.h>
32 #include <linux/bitmap.h>
33 #include <linux/dma-fence.h>
37 #define KFD_INTERFACE_VERSION 2
38 #define KGD_MAX_QUEUES 128
45 enum kfd_preempt_type {
46 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN = 0,
47 KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
51 uint32_t num_shader_engines;
52 uint32_t num_shader_arrays_per_engine;
53 uint32_t num_cu_per_sh;
54 uint32_t cu_active_number;
57 uint32_t max_waves_per_simd;
58 uint32_t wave_front_size;
59 uint32_t max_scratch_slots_per_cu;
61 uint32_t cu_bitmap[4][4];
64 /* For getting GPU local memory information from KGD */
65 struct kfd_local_mem_info {
66 uint64_t local_mem_size_private;
67 uint64_t local_mem_size_public;
72 enum kgd_memory_pool {
73 KGD_POOL_SYSTEM_CACHEABLE = 1,
74 KGD_POOL_SYSTEM_WRITECOMBINE = 2,
75 KGD_POOL_FRAMEBUFFER = 3,
78 enum kgd_engine_type {
90 struct kgd2kfd_shared_resources {
91 /* Bit n == 1 means VMID n is available for KFD. */
92 unsigned int compute_vmid_bitmap;
94 /* number of pipes per mec */
95 uint32_t num_pipe_per_mec;
97 /* number of queues per pipe */
98 uint32_t num_queue_per_pipe;
100 /* Bit n == 1 means Queue n is available for KFD */
101 DECLARE_BITMAP(queue_bitmap, KGD_MAX_QUEUES);
103 /* Base address of doorbell aperture. */
104 phys_addr_t doorbell_physical_address;
106 /* Size in bytes of doorbell aperture. */
107 size_t doorbell_aperture_size;
109 /* Number of bytes at start of aperture reserved for KGD. */
110 size_t doorbell_start_offset;
112 /* GPUVM address space size in bytes */
115 /* Minor device number of the render node */
116 int drm_render_minor;
120 uint32_t *tile_config_ptr;
121 uint32_t *macro_tile_config_ptr;
122 uint32_t num_tile_configs;
123 uint32_t num_macro_tile_configs;
125 uint32_t gb_addr_config;
132 * Allocation flag domains
133 * NOTE: This must match the corresponding definitions in kfd_ioctl.h.
135 #define ALLOC_MEM_FLAGS_VRAM (1 << 0)
136 #define ALLOC_MEM_FLAGS_GTT (1 << 1)
137 #define ALLOC_MEM_FLAGS_USERPTR (1 << 2) /* TODO */
138 #define ALLOC_MEM_FLAGS_DOORBELL (1 << 3) /* TODO */
141 * Allocation flags attributes/access options.
142 * NOTE: This must match the corresponding definitions in kfd_ioctl.h.
144 #define ALLOC_MEM_FLAGS_WRITABLE (1 << 31)
145 #define ALLOC_MEM_FLAGS_EXECUTABLE (1 << 30)
146 #define ALLOC_MEM_FLAGS_PUBLIC (1 << 29)
147 #define ALLOC_MEM_FLAGS_NO_SUBSTITUTE (1 << 28) /* TODO */
148 #define ALLOC_MEM_FLAGS_AQL_QUEUE_MEM (1 << 27)
149 #define ALLOC_MEM_FLAGS_COHERENT (1 << 26) /* For GFXv9 or later */
152 * struct kfd2kgd_calls
154 * @init_gtt_mem_allocation: Allocate a buffer on the gart aperture.
155 * The buffer can be used for mqds, hpds, kernel queue, fence and runlists
157 * @free_gtt_mem: Frees a buffer that was allocated on the gart aperture
159 * @get_local_mem_info: Retrieves information about GPU local memory
161 * @get_gpu_clock_counter: Retrieves GPU clock counter
163 * @get_max_engine_clock_in_mhz: Retrieves maximum GPU clock in MHz
165 * @alloc_pasid: Allocate a PASID
166 * @free_pasid: Free a PASID
168 * @program_sh_mem_settings: A function that should initiate the memory
169 * properties such as main aperture memory type (cache / non cached) and
170 * secondary aperture base address, size and memory type.
171 * This function is used only for no cp scheduling mode.
173 * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp
174 * scheduling mode. Only used for no cp scheduling mode.
176 * @init_pipeline: Initialized the compute pipelines.
178 * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp
181 * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot.
182 * used only for no HWS mode.
184 * @hqd_dump: Dumps CPC HQD registers to an array of address-value pairs.
185 * Array is allocated with kmalloc, needs to be freed with kfree by caller.
187 * @hqd_sdma_dump: Dumps SDMA HQD registers to an array of address-value pairs.
188 * Array is allocated with kmalloc, needs to be freed with kfree by caller.
190 * @hqd_is_occupies: Checks if a hqd slot is occupied.
192 * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot.
194 * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied.
196 * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that
199 * @get_fw_version: Returns FW versions from the header
201 * @set_scratch_backing_va: Sets VA for scratch backing memory of a VMID.
202 * Only used for no cp scheduling mode
204 * @get_tile_config: Returns GPU-specific tiling mode information
206 * @get_cu_info: Retrieves activated cu info
208 * @get_vram_usage: Returns current VRAM usage
210 * @create_process_vm: Create a VM address space for a given process and GPU
212 * @destroy_process_vm: Destroy a VM
214 * @get_process_page_dir: Get physical address of a VM page directory
216 * @set_vm_context_page_table_base: Program page table base for a VMID
218 * @alloc_memory_of_gpu: Allocate GPUVM memory
220 * @free_memory_of_gpu: Free GPUVM memory
222 * @map_memory_to_gpu: Map GPUVM memory into a specific VM address
223 * space. Allocates and updates page tables and page directories as
224 * needed. This function may return before all page table updates have
225 * completed. This allows multiple map operations (on multiple GPUs)
226 * to happen concurrently. Use sync_memory to synchronize with all
229 * @unmap_memor_to_gpu: Unmap GPUVM memory from a specific VM address space
231 * @sync_memory: Wait for pending page table updates to complete
233 * @map_gtt_bo_to_kernel: Map a GTT BO for kernel access
234 * Pins the BO, maps it to kernel address space. Such BOs are never evicted.
235 * The kernel virtual address remains valid until the BO is freed.
237 * @restore_process_bos: Restore all BOs that belong to the
238 * process. This is intended for restoring memory mappings after a TTM
241 * @invalidate_tlbs: Invalidate TLBs for a specific PASID
243 * @invalidate_tlbs_vmid: Invalidate TLBs for a specific VMID
245 * @submit_ib: Submits an IB to the engine specified by inserting the
246 * IB to the corresponding ring (ring type). The IB is executed with the
247 * specified VMID in a user mode context.
249 * This structure contains function pointers to services that the kgd driver
250 * provides to amdkfd driver.
253 struct kfd2kgd_calls {
254 int (*init_gtt_mem_allocation)(struct kgd_dev *kgd, size_t size,
255 void **mem_obj, uint64_t *gpu_addr,
258 void (*free_gtt_mem)(struct kgd_dev *kgd, void *mem_obj);
260 void (*get_local_mem_info)(struct kgd_dev *kgd,
261 struct kfd_local_mem_info *mem_info);
262 uint64_t (*get_gpu_clock_counter)(struct kgd_dev *kgd);
264 uint32_t (*get_max_engine_clock_in_mhz)(struct kgd_dev *kgd);
266 int (*alloc_pasid)(unsigned int bits);
267 void (*free_pasid)(unsigned int pasid);
269 /* Register access functions */
270 void (*program_sh_mem_settings)(struct kgd_dev *kgd, uint32_t vmid,
271 uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
272 uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases);
274 int (*set_pasid_vmid_mapping)(struct kgd_dev *kgd, unsigned int pasid,
277 int (*init_pipeline)(struct kgd_dev *kgd, uint32_t pipe_id,
278 uint32_t hpd_size, uint64_t hpd_gpu_addr);
280 int (*init_interrupts)(struct kgd_dev *kgd, uint32_t pipe_id);
282 int (*hqd_load)(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
283 uint32_t queue_id, uint32_t __user *wptr,
284 uint32_t wptr_shift, uint32_t wptr_mask,
285 struct mm_struct *mm);
287 int (*hqd_sdma_load)(struct kgd_dev *kgd, void *mqd,
288 uint32_t __user *wptr, struct mm_struct *mm);
290 int (*hqd_dump)(struct kgd_dev *kgd,
291 uint32_t pipe_id, uint32_t queue_id,
292 uint32_t (**dump)[2], uint32_t *n_regs);
294 int (*hqd_sdma_dump)(struct kgd_dev *kgd,
295 uint32_t engine_id, uint32_t queue_id,
296 uint32_t (**dump)[2], uint32_t *n_regs);
298 bool (*hqd_is_occupied)(struct kgd_dev *kgd, uint64_t queue_address,
299 uint32_t pipe_id, uint32_t queue_id);
301 int (*hqd_destroy)(struct kgd_dev *kgd, void *mqd, uint32_t reset_type,
302 unsigned int timeout, uint32_t pipe_id,
305 bool (*hqd_sdma_is_occupied)(struct kgd_dev *kgd, void *mqd);
307 int (*hqd_sdma_destroy)(struct kgd_dev *kgd, void *mqd,
308 unsigned int timeout);
310 int (*address_watch_disable)(struct kgd_dev *kgd);
311 int (*address_watch_execute)(struct kgd_dev *kgd,
312 unsigned int watch_point_id,
316 int (*wave_control_execute)(struct kgd_dev *kgd,
317 uint32_t gfx_index_val,
319 uint32_t (*address_watch_get_offset)(struct kgd_dev *kgd,
320 unsigned int watch_point_id,
321 unsigned int reg_offset);
322 bool (*get_atc_vmid_pasid_mapping_valid)(
325 uint16_t (*get_atc_vmid_pasid_mapping_pasid)(
329 uint16_t (*get_fw_version)(struct kgd_dev *kgd,
330 enum kgd_engine_type type);
331 void (*set_scratch_backing_va)(struct kgd_dev *kgd,
332 uint64_t va, uint32_t vmid);
333 int (*get_tile_config)(struct kgd_dev *kgd, struct tile_config *config);
335 void (*get_cu_info)(struct kgd_dev *kgd,
336 struct kfd_cu_info *cu_info);
337 uint64_t (*get_vram_usage)(struct kgd_dev *kgd);
339 int (*create_process_vm)(struct kgd_dev *kgd, void **vm,
340 void **process_info, struct dma_fence **ef);
341 int (*acquire_process_vm)(struct kgd_dev *kgd, struct file *filp,
342 void **vm, void **process_info, struct dma_fence **ef);
343 void (*destroy_process_vm)(struct kgd_dev *kgd, void *vm);
344 uint32_t (*get_process_page_dir)(void *vm);
345 void (*set_vm_context_page_table_base)(struct kgd_dev *kgd,
346 uint32_t vmid, uint32_t page_table_base);
347 int (*alloc_memory_of_gpu)(struct kgd_dev *kgd, uint64_t va,
348 uint64_t size, void *vm,
349 struct kgd_mem **mem, uint64_t *offset,
351 int (*free_memory_of_gpu)(struct kgd_dev *kgd, struct kgd_mem *mem);
352 int (*map_memory_to_gpu)(struct kgd_dev *kgd, struct kgd_mem *mem,
354 int (*unmap_memory_to_gpu)(struct kgd_dev *kgd, struct kgd_mem *mem,
356 int (*sync_memory)(struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
357 int (*map_gtt_bo_to_kernel)(struct kgd_dev *kgd, struct kgd_mem *mem,
358 void **kptr, uint64_t *size);
359 int (*restore_process_bos)(void *process_info, struct dma_fence **ef);
361 int (*invalidate_tlbs)(struct kgd_dev *kgd, uint16_t pasid);
362 int (*invalidate_tlbs_vmid)(struct kgd_dev *kgd, uint16_t vmid);
364 int (*submit_ib)(struct kgd_dev *kgd, enum kgd_engine_type engine,
365 uint32_t vmid, uint64_t gpu_addr,
366 uint32_t *ib_cmd, uint32_t ib_len);
370 * struct kgd2kfd_calls
372 * @exit: Notifies amdkfd that kgd module is unloaded
374 * @probe: Notifies amdkfd about a probe done on a device in the kgd driver.
376 * @device_init: Initialize the newly probed device (if it is a device that
379 * @device_exit: Notifies amdkfd about a removal of a kgd device
381 * @suspend: Notifies amdkfd about a suspend action done to a kgd device
383 * @resume: Notifies amdkfd about a resume action done to a kgd device
385 * @schedule_evict_and_restore_process: Schedules work queue that will prepare
386 * for safe eviction of KFD BOs that belong to the specified process.
388 * This structure contains function callback pointers so the kgd driver
389 * will notify to the amdkfd about certain status changes.
392 struct kgd2kfd_calls {
394 struct kfd_dev* (*probe)(struct kgd_dev *kgd, struct pci_dev *pdev,
395 const struct kfd2kgd_calls *f2g);
396 bool (*device_init)(struct kfd_dev *kfd,
397 const struct kgd2kfd_shared_resources *gpu_resources);
398 void (*device_exit)(struct kfd_dev *kfd);
399 void (*interrupt)(struct kfd_dev *kfd, const void *ih_ring_entry);
400 void (*suspend)(struct kfd_dev *kfd);
401 int (*resume)(struct kfd_dev *kfd);
402 int (*schedule_evict_and_restore_process)(struct mm_struct *mm,
403 struct dma_fence *fence);
406 int kgd2kfd_init(unsigned interface_version,
407 const struct kgd2kfd_calls **g2f);
409 #endif /* KGD_KFD_INTERFACE_H_INCLUDED */