2 * Copyright 2014 Advanced Micro Devices, Inc.
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11 * The above copyright notice and this permission notice shall be included in
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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 KGD_MAX_QUEUES 128
44 enum kfd_preempt_type {
45 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN = 0,
46 KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
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(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;
157 uint32_t *tile_config_ptr;
158 uint32_t *macro_tile_config_ptr;
159 uint32_t num_tile_configs;
160 uint32_t num_macro_tile_configs;
162 uint32_t gb_addr_config;
167 #define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT 4096
170 * Allocation flag domains
171 * NOTE: This must match the corresponding definitions in kfd_ioctl.h.
173 #define ALLOC_MEM_FLAGS_VRAM (1 << 0)
174 #define ALLOC_MEM_FLAGS_GTT (1 << 1)
175 #define ALLOC_MEM_FLAGS_USERPTR (1 << 2)
176 #define ALLOC_MEM_FLAGS_DOORBELL (1 << 3)
179 * Allocation flags attributes/access options.
180 * NOTE: This must match the corresponding definitions in kfd_ioctl.h.
182 #define ALLOC_MEM_FLAGS_WRITABLE (1 << 31)
183 #define ALLOC_MEM_FLAGS_EXECUTABLE (1 << 30)
184 #define ALLOC_MEM_FLAGS_PUBLIC (1 << 29)
185 #define ALLOC_MEM_FLAGS_NO_SUBSTITUTE (1 << 28) /* TODO */
186 #define ALLOC_MEM_FLAGS_AQL_QUEUE_MEM (1 << 27)
187 #define ALLOC_MEM_FLAGS_COHERENT (1 << 26) /* For GFXv9 or later */
190 * struct kfd2kgd_calls
192 * @program_sh_mem_settings: A function that should initiate the memory
193 * properties such as main aperture memory type (cache / non cached) and
194 * secondary aperture base address, size and memory type.
195 * This function is used only for no cp scheduling mode.
197 * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp
198 * scheduling mode. Only used for no cp scheduling mode.
200 * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp
203 * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot.
204 * used only for no HWS mode.
206 * @hqd_dump: Dumps CPC HQD registers to an array of address-value pairs.
207 * Array is allocated with kmalloc, needs to be freed with kfree by caller.
209 * @hqd_sdma_dump: Dumps SDMA HQD registers to an array of address-value pairs.
210 * Array is allocated with kmalloc, needs to be freed with kfree by caller.
212 * @hqd_is_occupies: Checks if a hqd slot is occupied.
214 * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot.
216 * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied.
218 * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that
221 * @set_scratch_backing_va: Sets VA for scratch backing memory of a VMID.
222 * Only used for no cp scheduling mode
224 * @get_tile_config: Returns GPU-specific tiling mode information
226 * @set_vm_context_page_table_base: Program page table base for a VMID
228 * @invalidate_tlbs: Invalidate TLBs for a specific PASID
230 * @invalidate_tlbs_vmid: Invalidate TLBs for a specific VMID
232 * @read_vmid_from_vmfault_reg: On Hawaii the VMID is not set in the
233 * IH ring entry. This function allows the KFD ISR to get the VMID
234 * from the fault status register as early as possible.
236 * @get_hive_id: Returns hive id of current device, 0 if xgmi is not enabled
238 * This structure contains function pointers to services that the kgd driver
239 * provides to amdkfd driver.
242 struct kfd2kgd_calls {
243 /* Register access functions */
244 void (*program_sh_mem_settings)(struct kgd_dev *kgd, uint32_t vmid,
245 uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
246 uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases);
248 int (*set_pasid_vmid_mapping)(struct kgd_dev *kgd, unsigned int pasid,
251 int (*init_interrupts)(struct kgd_dev *kgd, uint32_t pipe_id);
253 int (*hqd_load)(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
254 uint32_t queue_id, uint32_t __user *wptr,
255 uint32_t wptr_shift, uint32_t wptr_mask,
256 struct mm_struct *mm);
258 int (*hqd_sdma_load)(struct kgd_dev *kgd, void *mqd,
259 uint32_t __user *wptr, struct mm_struct *mm);
261 int (*hqd_dump)(struct kgd_dev *kgd,
262 uint32_t pipe_id, uint32_t queue_id,
263 uint32_t (**dump)[2], uint32_t *n_regs);
265 int (*hqd_sdma_dump)(struct kgd_dev *kgd,
266 uint32_t engine_id, uint32_t queue_id,
267 uint32_t (**dump)[2], uint32_t *n_regs);
269 bool (*hqd_is_occupied)(struct kgd_dev *kgd, uint64_t queue_address,
270 uint32_t pipe_id, uint32_t queue_id);
272 int (*hqd_destroy)(struct kgd_dev *kgd, void *mqd, uint32_t reset_type,
273 unsigned int timeout, uint32_t pipe_id,
276 bool (*hqd_sdma_is_occupied)(struct kgd_dev *kgd, void *mqd);
278 int (*hqd_sdma_destroy)(struct kgd_dev *kgd, void *mqd,
279 unsigned int timeout);
281 int (*address_watch_disable)(struct kgd_dev *kgd);
282 int (*address_watch_execute)(struct kgd_dev *kgd,
283 unsigned int watch_point_id,
287 int (*wave_control_execute)(struct kgd_dev *kgd,
288 uint32_t gfx_index_val,
290 uint32_t (*address_watch_get_offset)(struct kgd_dev *kgd,
291 unsigned int watch_point_id,
292 unsigned int reg_offset);
293 bool (*get_atc_vmid_pasid_mapping_valid)(
296 uint16_t (*get_atc_vmid_pasid_mapping_pasid)(
300 void (*set_scratch_backing_va)(struct kgd_dev *kgd,
301 uint64_t va, uint32_t vmid);
302 int (*get_tile_config)(struct kgd_dev *kgd, struct tile_config *config);
304 void (*set_vm_context_page_table_base)(struct kgd_dev *kgd,
305 uint32_t vmid, uint64_t page_table_base);
306 int (*invalidate_tlbs)(struct kgd_dev *kgd, uint16_t pasid);
307 int (*invalidate_tlbs_vmid)(struct kgd_dev *kgd, uint16_t vmid);
308 uint32_t (*read_vmid_from_vmfault_reg)(struct kgd_dev *kgd);
309 uint64_t (*get_hive_id)(struct kgd_dev *kgd);
313 #endif /* KGD_KFD_INTERFACE_H_INCLUDED */