1 /* $NetBSD: kgd_kfd_interface.h,v 1.4 2021/12/19 10:59:02 riastradh Exp $ */ 2 3 /* 4 * Copyright 2014 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 /* 26 * This file defines the private interface between the 27 * AMD kernel graphics drivers and the AMD KFD. 28 */ 29 30 #ifndef KGD_KFD_INTERFACE_H_INCLUDED 31 #define KGD_KFD_INTERFACE_H_INCLUDED 32 33 #include <linux/types.h> 34 #include <linux/bitmap.h> 35 #include <linux/dma-fence.h> 36 37 struct pci_dev; 38 39 #define KGD_MAX_QUEUES 128 40 41 struct kfd_dev; 42 struct kgd_dev; 43 44 struct kgd_mem; 45 46 enum kfd_preempt_type { 47 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN = 0, 48 KFD_PREEMPT_TYPE_WAVEFRONT_RESET, 49 }; 50 51 struct kfd_vm_fault_info { 52 uint64_t page_addr; 53 uint32_t vmid; 54 uint32_t mc_id; 55 uint32_t status; 56 bool prot_valid; 57 bool prot_read; 58 bool prot_write; 59 bool prot_exec; 60 }; 61 62 struct kfd_cu_info { 63 uint32_t num_shader_engines; 64 uint32_t num_shader_arrays_per_engine; 65 uint32_t num_cu_per_sh; 66 uint32_t cu_active_number; 67 uint32_t cu_ao_mask; 68 uint32_t simd_per_cu; 69 uint32_t max_waves_per_simd; 70 uint32_t wave_front_size; 71 uint32_t max_scratch_slots_per_cu; 72 uint32_t lds_size; 73 uint32_t cu_bitmap[4][4]; 74 }; 75 76 /* For getting GPU local memory information from KGD */ 77 struct kfd_local_mem_info { 78 uint64_t local_mem_size_private; 79 uint64_t local_mem_size_public; 80 uint32_t vram_width; 81 uint32_t mem_clk_max; 82 }; 83 84 enum kgd_memory_pool { 85 KGD_POOL_SYSTEM_CACHEABLE = 1, 86 KGD_POOL_SYSTEM_WRITECOMBINE = 2, 87 KGD_POOL_FRAMEBUFFER = 3, 88 }; 89 90 /** 91 * enum kfd_sched_policy 92 * 93 * @KFD_SCHED_POLICY_HWS: H/W scheduling policy known as command processor (cp) 94 * scheduling. In this scheduling mode we're using the firmware code to 95 * schedule the user mode queues and kernel queues such as HIQ and DIQ. 96 * the HIQ queue is used as a special queue that dispatches the configuration 97 * to the cp and the user mode queues list that are currently running. 98 * the DIQ queue is a debugging queue that dispatches debugging commands to the 99 * firmware. 100 * in this scheduling mode user mode queues over subscription feature is 101 * enabled. 102 * 103 * @KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION: The same as above but the over 104 * subscription feature disabled. 105 * 106 * @KFD_SCHED_POLICY_NO_HWS: no H/W scheduling policy is a mode which directly 107 * set the command processor registers and sets the queues "manually". This 108 * mode is used *ONLY* for debugging proposes. 109 * 110 */ 111 enum kfd_sched_policy { 112 KFD_SCHED_POLICY_HWS = 0, 113 KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION, 114 KFD_SCHED_POLICY_NO_HWS 115 }; 116 117 struct kgd2kfd_shared_resources { 118 /* Bit n == 1 means VMID n is available for KFD. */ 119 unsigned int compute_vmid_bitmap; 120 121 /* number of pipes per mec */ 122 uint32_t num_pipe_per_mec; 123 124 /* number of queues per pipe */ 125 uint32_t num_queue_per_pipe; 126 127 /* Bit n == 1 means Queue n is available for KFD */ 128 DECLARE_BITMAP(queue_bitmap, KGD_MAX_QUEUES); 129 130 /* SDMA doorbell assignments (SOC15 and later chips only). Only 131 * specific doorbells are routed to each SDMA engine. Others 132 * are routed to IH and VCN. They are not usable by the CP. 133 */ 134 uint32_t *sdma_doorbell_idx; 135 136 /* From SOC15 onward, the doorbell index range not usable for CP 137 * queues. 138 */ 139 uint32_t non_cp_doorbells_start; 140 uint32_t non_cp_doorbells_end; 141 142 /* Base address of doorbell aperture. */ 143 phys_addr_t doorbell_physical_address; 144 145 /* Size in bytes of doorbell aperture. */ 146 size_t doorbell_aperture_size; 147 148 /* Number of bytes at start of aperture reserved for KGD. */ 149 size_t doorbell_start_offset; 150 151 /* GPUVM address space size in bytes */ 152 uint64_t gpuvm_size; 153 154 /* Minor device number of the render node */ 155 int drm_render_minor; 156 }; 157 158 struct tile_config { 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; 163 164 uint32_t gb_addr_config; 165 uint32_t num_banks; 166 uint32_t num_ranks; 167 }; 168 169 #define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT 4096 170 171 /* 172 * Allocation flag domains 173 * NOTE: This must match the corresponding definitions in kfd_ioctl.h. 174 */ 175 #define ALLOC_MEM_FLAGS_VRAM (1 << 0) 176 #define ALLOC_MEM_FLAGS_GTT (1 << 1) 177 #define ALLOC_MEM_FLAGS_USERPTR (1 << 2) 178 #define ALLOC_MEM_FLAGS_DOORBELL (1 << 3) 179 #define ALLOC_MEM_FLAGS_MMIO_REMAP (1 << 4) 180 181 /* 182 * Allocation flags attributes/access options. 183 * NOTE: This must match the corresponding definitions in kfd_ioctl.h. 184 */ 185 #define ALLOC_MEM_FLAGS_WRITABLE (1 << 31) 186 #define ALLOC_MEM_FLAGS_EXECUTABLE (1 << 30) 187 #define ALLOC_MEM_FLAGS_PUBLIC (1 << 29) 188 #define ALLOC_MEM_FLAGS_NO_SUBSTITUTE (1 << 28) /* TODO */ 189 #define ALLOC_MEM_FLAGS_AQL_QUEUE_MEM (1 << 27) 190 #define ALLOC_MEM_FLAGS_COHERENT (1 << 26) /* For GFXv9 or later */ 191 192 /** 193 * struct kfd2kgd_calls 194 * 195 * @program_sh_mem_settings: A function that should initiate the memory 196 * properties such as main aperture memory type (cache / non cached) and 197 * secondary aperture base address, size and memory type. 198 * This function is used only for no cp scheduling mode. 199 * 200 * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp 201 * scheduling mode. Only used for no cp scheduling mode. 202 * 203 * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp 204 * sceduling mode. 205 * 206 * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot. 207 * used only for no HWS mode. 208 * 209 * @hqd_dump: Dumps CPC HQD registers to an array of address-value pairs. 210 * Array is allocated with kmalloc, needs to be freed with kfree by caller. 211 * 212 * @hqd_sdma_dump: Dumps SDMA HQD registers to an array of address-value pairs. 213 * Array is allocated with kmalloc, needs to be freed with kfree by caller. 214 * 215 * @hqd_is_occupies: Checks if a hqd slot is occupied. 216 * 217 * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot. 218 * 219 * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied. 220 * 221 * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that 222 * SDMA hqd slot. 223 * 224 * @set_scratch_backing_va: Sets VA for scratch backing memory of a VMID. 225 * Only used for no cp scheduling mode 226 * 227 * @get_tile_config: Returns GPU-specific tiling mode information 228 * 229 * @set_vm_context_page_table_base: Program page table base for a VMID 230 * 231 * @invalidate_tlbs: Invalidate TLBs for a specific PASID 232 * 233 * @invalidate_tlbs_vmid: Invalidate TLBs for a specific VMID 234 * 235 * @read_vmid_from_vmfault_reg: On Hawaii the VMID is not set in the 236 * IH ring entry. This function allows the KFD ISR to get the VMID 237 * from the fault status register as early as possible. 238 * 239 * @get_hive_id: Returns hive id of current device, 0 if xgmi is not enabled 240 * 241 * This structure contains function pointers to services that the kgd driver 242 * provides to amdkfd driver. 243 * 244 */ 245 struct kfd2kgd_calls { 246 /* Register access functions */ 247 void (*program_sh_mem_settings)(struct kgd_dev *kgd, uint32_t vmid, 248 uint32_t sh_mem_config, uint32_t sh_mem_ape1_base, 249 uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases); 250 251 int (*set_pasid_vmid_mapping)(struct kgd_dev *kgd, unsigned int pasid, 252 unsigned int vmid); 253 254 int (*init_interrupts)(struct kgd_dev *kgd, uint32_t pipe_id); 255 256 #ifndef __NetBSD__ 257 int (*hqd_load)(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id, 258 uint32_t queue_id, uint32_t __user *wptr, 259 uint32_t wptr_shift, uint32_t wptr_mask, 260 struct mm_struct *mm); 261 #endif 262 263 int (*hiq_mqd_load)(struct kgd_dev *kgd, void *mqd, 264 uint32_t pipe_id, uint32_t queue_id, 265 uint32_t doorbell_off); 266 267 #ifndef __NetBSD__ 268 int (*hqd_sdma_load)(struct kgd_dev *kgd, void *mqd, 269 uint32_t __user *wptr, struct mm_struct *mm); 270 #endif 271 272 int (*hqd_dump)(struct kgd_dev *kgd, 273 uint32_t pipe_id, uint32_t queue_id, 274 uint32_t (**dump)[2], uint32_t *n_regs); 275 276 int (*hqd_sdma_dump)(struct kgd_dev *kgd, 277 uint32_t engine_id, uint32_t queue_id, 278 uint32_t (**dump)[2], uint32_t *n_regs); 279 280 bool (*hqd_is_occupied)(struct kgd_dev *kgd, uint64_t queue_address, 281 uint32_t pipe_id, uint32_t queue_id); 282 283 int (*hqd_destroy)(struct kgd_dev *kgd, void *mqd, uint32_t reset_type, 284 unsigned int timeout, uint32_t pipe_id, 285 uint32_t queue_id); 286 287 bool (*hqd_sdma_is_occupied)(struct kgd_dev *kgd, void *mqd); 288 289 int (*hqd_sdma_destroy)(struct kgd_dev *kgd, void *mqd, 290 unsigned int timeout); 291 292 int (*address_watch_disable)(struct kgd_dev *kgd); 293 int (*address_watch_execute)(struct kgd_dev *kgd, 294 unsigned int watch_point_id, 295 uint32_t cntl_val, 296 uint32_t addr_hi, 297 uint32_t addr_lo); 298 int (*wave_control_execute)(struct kgd_dev *kgd, 299 uint32_t gfx_index_val, 300 uint32_t sq_cmd); 301 uint32_t (*address_watch_get_offset)(struct kgd_dev *kgd, 302 unsigned int watch_point_id, 303 unsigned int reg_offset); 304 bool (*get_atc_vmid_pasid_mapping_info)( 305 struct kgd_dev *kgd, 306 uint8_t vmid, 307 uint16_t *p_pasid); 308 309 /* No longer needed from GFXv9 onward. The scratch base address is 310 * passed to the shader by the CP. It's the user mode driver's 311 * responsibility. 312 */ 313 void (*set_scratch_backing_va)(struct kgd_dev *kgd, 314 uint64_t va, uint32_t vmid); 315 316 int (*get_tile_config)(struct kgd_dev *kgd, struct tile_config *config); 317 318 void (*set_vm_context_page_table_base)(struct kgd_dev *kgd, 319 uint32_t vmid, uint64_t page_table_base); 320 uint32_t (*read_vmid_from_vmfault_reg)(struct kgd_dev *kgd); 321 uint64_t (*get_hive_id)(struct kgd_dev *kgd); 322 323 }; 324 325 #endif /* KGD_KFD_INTERFACE_H_INCLUDED */ 326
Indexes created Sun Sep 21 19:09:51 GMT 2025