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>
38 #define KGD_MAX_QUEUES 128
43 enum kfd_preempt_type {
44 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN = 0,
45 KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
46 KFD_PREEMPT_TYPE_WAVEFRONT_SAVE
49 struct kfd_vm_fault_info {
61 uint32_t num_shader_engines;
62 uint32_t num_shader_arrays_per_engine;
63 uint32_t num_cu_per_sh;
64 uint32_t cu_active_number;
67 uint32_t max_waves_per_simd;
68 uint32_t wave_front_size;
69 uint32_t max_scratch_slots_per_cu;
71 uint32_t cu_bitmap[4][4];
74 /* For getting GPU local memory information from KGD */
75 struct kfd_local_mem_info {
76 uint64_t local_mem_size_private;
77 uint64_t local_mem_size_public;
82 enum kgd_memory_pool {
83 KGD_POOL_SYSTEM_CACHEABLE = 1,
84 KGD_POOL_SYSTEM_WRITECOMBINE = 2,
85 KGD_POOL_FRAMEBUFFER = 3,
89 * enum kfd_sched_policy
91 * @KFD_SCHED_POLICY_HWS: H/W scheduling policy known as command processor (cp)
92 * scheduling. In this scheduling mode we're using the firmware code to
93 * schedule the user mode queues and kernel queues such as HIQ and DIQ.
94 * the HIQ queue is used as a special queue that dispatches the configuration
95 * to the cp and the user mode queues list that are currently running.
96 * the DIQ queue is a debugging queue that dispatches debugging commands to the
98 * in this scheduling mode user mode queues over subscription feature is
101 * @KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION: The same as above but the over
102 * subscription feature disabled.
104 * @KFD_SCHED_POLICY_NO_HWS: no H/W scheduling policy is a mode which directly
105 * set the command processor registers and sets the queues "manually". This
106 * mode is used *ONLY* for debugging proposes.
109 enum kfd_sched_policy {
110 KFD_SCHED_POLICY_HWS = 0,
111 KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION,
112 KFD_SCHED_POLICY_NO_HWS
115 struct kgd2kfd_shared_resources {
116 /* Bit n == 1 means VMID n is available for KFD. */
117 unsigned int compute_vmid_bitmap;
119 /* number of pipes per mec */
120 uint32_t num_pipe_per_mec;
122 /* number of queues per pipe */
123 uint32_t num_queue_per_pipe;
125 /* Bit n == 1 means Queue n is available for KFD */
126 DECLARE_BITMAP(cp_queue_bitmap, KGD_MAX_QUEUES);
128 /* SDMA doorbell assignments (SOC15 and later chips only). Only
129 * specific doorbells are routed to each SDMA engine. Others
130 * are routed to IH and VCN. They are not usable by the CP.
132 uint32_t *sdma_doorbell_idx;
134 /* From SOC15 onward, the doorbell index range not usable for CP
137 uint32_t non_cp_doorbells_start;
138 uint32_t non_cp_doorbells_end;
140 /* Base address of doorbell aperture. */
141 phys_addr_t doorbell_physical_address;
143 /* Size in bytes of doorbell aperture. */
144 size_t doorbell_aperture_size;
146 /* Number of bytes at start of aperture reserved for KGD. */
147 size_t doorbell_start_offset;
149 /* GPUVM address space size in bytes */
152 /* Minor device number of the render node */
153 int drm_render_minor;
159 uint32_t *tile_config_ptr;
160 uint32_t *macro_tile_config_ptr;
161 uint32_t num_tile_configs;
162 uint32_t num_macro_tile_configs;
164 uint32_t gb_addr_config;
169 #define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT 4096
172 * struct kfd2kgd_calls
174 * @program_sh_mem_settings: A function that should initiate the memory
175 * properties such as main aperture memory type (cache / non cached) and
176 * secondary aperture base address, size and memory type.
177 * This function is used only for no cp scheduling mode.
179 * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp
180 * scheduling mode. Only used for no cp scheduling mode.
182 * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp
185 * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot.
186 * used only for no HWS mode.
188 * @hqd_dump: Dumps CPC HQD registers to an array of address-value pairs.
189 * Array is allocated with kmalloc, needs to be freed with kfree by caller.
191 * @hqd_sdma_dump: Dumps SDMA HQD registers to an array of address-value pairs.
192 * Array is allocated with kmalloc, needs to be freed with kfree by caller.
194 * @hqd_is_occupies: Checks if a hqd slot is occupied.
196 * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot.
198 * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied.
200 * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that
203 * @set_scratch_backing_va: Sets VA for scratch backing memory of a VMID.
204 * Only used for no cp scheduling mode
206 * @set_vm_context_page_table_base: Program page table base for a VMID
208 * @invalidate_tlbs: Invalidate TLBs for a specific PASID
210 * @invalidate_tlbs_vmid: Invalidate TLBs for a specific VMID
212 * @read_vmid_from_vmfault_reg: On Hawaii the VMID is not set in the
213 * IH ring entry. This function allows the KFD ISR to get the VMID
214 * from the fault status register as early as possible.
216 * @get_cu_occupancy: Function pointer that returns to caller the number
217 * of wave fronts that are in flight for all of the queues of a process
218 * as identified by its pasid. It is important to note that the value
219 * returned by this function is a snapshot of current moment and cannot
220 * guarantee any minimum for the number of waves in-flight. This function
221 * is defined for devices that belong to GFX9 and later GFX families. Care
222 * must be taken in calling this function as it is not defined for devices
223 * that belong to GFX8 and below GFX families.
225 * This structure contains function pointers to services that the kgd driver
226 * provides to amdkfd driver.
229 struct kfd2kgd_calls {
230 /* Register access functions */
231 void (*program_sh_mem_settings)(struct amdgpu_device *adev, uint32_t vmid,
232 uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
233 uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases,
236 int (*set_pasid_vmid_mapping)(struct amdgpu_device *adev, u32 pasid,
237 unsigned int vmid, uint32_t inst);
239 int (*init_interrupts)(struct amdgpu_device *adev, uint32_t pipe_id,
242 int (*hqd_load)(struct amdgpu_device *adev, void *mqd, uint32_t pipe_id,
243 uint32_t queue_id, uint32_t __user *wptr,
244 uint32_t wptr_shift, uint32_t wptr_mask,
245 struct mm_struct *mm, uint32_t inst);
247 int (*hiq_mqd_load)(struct amdgpu_device *adev, void *mqd,
248 uint32_t pipe_id, uint32_t queue_id,
249 uint32_t doorbell_off, uint32_t inst);
251 int (*hqd_sdma_load)(struct amdgpu_device *adev, void *mqd,
252 uint32_t __user *wptr, struct mm_struct *mm);
254 int (*hqd_dump)(struct amdgpu_device *adev,
255 uint32_t pipe_id, uint32_t queue_id,
256 uint32_t (**dump)[2], uint32_t *n_regs, uint32_t inst);
258 int (*hqd_sdma_dump)(struct amdgpu_device *adev,
259 uint32_t engine_id, uint32_t queue_id,
260 uint32_t (**dump)[2], uint32_t *n_regs);
262 bool (*hqd_is_occupied)(struct amdgpu_device *adev,
263 uint64_t queue_address, uint32_t pipe_id,
264 uint32_t queue_id, uint32_t inst);
266 int (*hqd_destroy)(struct amdgpu_device *adev, void *mqd,
267 enum kfd_preempt_type reset_type,
268 unsigned int timeout, uint32_t pipe_id,
269 uint32_t queue_id, uint32_t inst);
271 bool (*hqd_sdma_is_occupied)(struct amdgpu_device *adev, void *mqd);
273 int (*hqd_sdma_destroy)(struct amdgpu_device *adev, void *mqd,
274 unsigned int timeout);
276 int (*wave_control_execute)(struct amdgpu_device *adev,
277 uint32_t gfx_index_val,
278 uint32_t sq_cmd, uint32_t inst);
279 bool (*get_atc_vmid_pasid_mapping_info)(struct amdgpu_device *adev,
283 /* No longer needed from GFXv9 onward. The scratch base address is
284 * passed to the shader by the CP. It's the user mode driver's
287 void (*set_scratch_backing_va)(struct amdgpu_device *adev,
288 uint64_t va, uint32_t vmid);
290 void (*set_vm_context_page_table_base)(struct amdgpu_device *adev,
291 uint32_t vmid, uint64_t page_table_base);
292 uint32_t (*read_vmid_from_vmfault_reg)(struct amdgpu_device *adev);
294 uint32_t (*enable_debug_trap)(struct amdgpu_device *adev,
295 bool restore_dbg_registers,
297 uint32_t (*disable_debug_trap)(struct amdgpu_device *adev,
298 bool keep_trap_enabled,
300 int (*validate_trap_override_request)(struct amdgpu_device *adev,
301 uint32_t trap_override,
302 uint32_t *trap_mask_supported);
303 uint32_t (*set_wave_launch_trap_override)(struct amdgpu_device *adev,
305 uint32_t trap_override,
306 uint32_t trap_mask_bits,
307 uint32_t trap_mask_request,
308 uint32_t *trap_mask_prev,
309 uint32_t kfd_dbg_trap_cntl_prev);
310 uint32_t (*set_wave_launch_mode)(struct amdgpu_device *adev,
311 uint8_t wave_launch_mode,
313 uint32_t (*set_address_watch)(struct amdgpu_device *adev,
314 uint64_t watch_address,
315 uint32_t watch_address_mask,
318 uint32_t debug_vmid);
319 uint32_t (*clear_address_watch)(struct amdgpu_device *adev,
321 void (*get_iq_wait_times)(struct amdgpu_device *adev,
322 uint32_t *wait_times);
323 void (*build_grace_period_packet_info)(struct amdgpu_device *adev,
325 uint32_t grace_period,
326 uint32_t *reg_offset,
328 void (*get_cu_occupancy)(struct amdgpu_device *adev, int pasid,
329 int *wave_cnt, int *max_waves_per_cu, uint32_t inst);
330 void (*program_trap_handler_settings)(struct amdgpu_device *adev,
331 uint32_t vmid, uint64_t tba_addr, uint64_t tma_addr,
335 #endif /* KGD_KFD_INTERFACE_H_INCLUDED */