2 * Copyright 2014 Advanced Micro Devices, Inc.
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5 * copy of this software and associated documentation files (the "Software"),
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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
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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>
36 #define KFD_INTERFACE_VERSION 2
37 #define KGD_MAX_QUEUES 128
44 enum kfd_preempt_type {
45 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN = 0,
46 KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
50 uint32_t num_shader_engines;
51 uint32_t num_shader_arrays_per_engine;
52 uint32_t num_cu_per_sh;
53 uint32_t cu_active_number;
56 uint32_t max_waves_per_simd;
57 uint32_t wave_front_size;
58 uint32_t max_scratch_slots_per_cu;
60 uint32_t cu_bitmap[4][4];
63 /* For getting GPU local memory information from KGD */
64 struct kfd_local_mem_info {
65 uint64_t local_mem_size_private;
66 uint64_t local_mem_size_public;
71 enum kgd_memory_pool {
72 KGD_POOL_SYSTEM_CACHEABLE = 1,
73 KGD_POOL_SYSTEM_WRITECOMBINE = 2,
74 KGD_POOL_FRAMEBUFFER = 3,
77 enum kgd_engine_type {
89 struct kgd2kfd_shared_resources {
90 /* Bit n == 1 means VMID n is available for KFD. */
91 unsigned int compute_vmid_bitmap;
93 /* number of pipes per mec */
94 uint32_t num_pipe_per_mec;
96 /* number of queues per pipe */
97 uint32_t num_queue_per_pipe;
99 /* Bit n == 1 means Queue n is available for KFD */
100 DECLARE_BITMAP(queue_bitmap, KGD_MAX_QUEUES);
102 /* Base address of doorbell aperture. */
103 phys_addr_t doorbell_physical_address;
105 /* Size in bytes of doorbell aperture. */
106 size_t doorbell_aperture_size;
108 /* Number of bytes at start of aperture reserved for KGD. */
109 size_t doorbell_start_offset;
113 uint32_t *tile_config_ptr;
114 uint32_t *macro_tile_config_ptr;
115 uint32_t num_tile_configs;
116 uint32_t num_macro_tile_configs;
118 uint32_t gb_addr_config;
124 * struct kfd2kgd_calls
126 * @init_gtt_mem_allocation: Allocate a buffer on the gart aperture.
127 * The buffer can be used for mqds, hpds, kernel queue, fence and runlists
129 * @free_gtt_mem: Frees a buffer that was allocated on the gart aperture
131 * @get_local_mem_info: Retrieves information about GPU local memory
133 * @get_gpu_clock_counter: Retrieves GPU clock counter
135 * @get_max_engine_clock_in_mhz: Retrieves maximum GPU clock in MHz
137 * @alloc_pasid: Allocate a PASID
138 * @free_pasid: Free a PASID
140 * @program_sh_mem_settings: A function that should initiate the memory
141 * properties such as main aperture memory type (cache / non cached) and
142 * secondary aperture base address, size and memory type.
143 * This function is used only for no cp scheduling mode.
145 * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp
146 * scheduling mode. Only used for no cp scheduling mode.
148 * @init_pipeline: Initialized the compute pipelines.
150 * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp
153 * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot.
154 * used only for no HWS mode.
156 * @hqd_dump: Dumps CPC HQD registers to an array of address-value pairs.
157 * Array is allocated with kmalloc, needs to be freed with kfree by caller.
159 * @hqd_sdma_dump: Dumps SDMA HQD registers to an array of address-value pairs.
160 * Array is allocated with kmalloc, needs to be freed with kfree by caller.
162 * @hqd_is_occupies: Checks if a hqd slot is occupied.
164 * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot.
166 * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied.
168 * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that
171 * @get_fw_version: Returns FW versions from the header
173 * @set_scratch_backing_va: Sets VA for scratch backing memory of a VMID.
174 * Only used for no cp scheduling mode
176 * @get_tile_config: Returns GPU-specific tiling mode information
178 * @get_cu_info: Retrieves activated cu info
180 * @get_vram_usage: Returns current VRAM usage
182 * This structure contains function pointers to services that the kgd driver
183 * provides to amdkfd driver.
186 struct kfd2kgd_calls {
187 int (*init_gtt_mem_allocation)(struct kgd_dev *kgd, size_t size,
188 void **mem_obj, uint64_t *gpu_addr,
191 void (*free_gtt_mem)(struct kgd_dev *kgd, void *mem_obj);
193 void (*get_local_mem_info)(struct kgd_dev *kgd,
194 struct kfd_local_mem_info *mem_info);
195 uint64_t (*get_gpu_clock_counter)(struct kgd_dev *kgd);
197 uint32_t (*get_max_engine_clock_in_mhz)(struct kgd_dev *kgd);
199 int (*alloc_pasid)(unsigned int bits);
200 void (*free_pasid)(unsigned int pasid);
202 /* Register access functions */
203 void (*program_sh_mem_settings)(struct kgd_dev *kgd, uint32_t vmid,
204 uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
205 uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases);
207 int (*set_pasid_vmid_mapping)(struct kgd_dev *kgd, unsigned int pasid,
210 int (*init_pipeline)(struct kgd_dev *kgd, uint32_t pipe_id,
211 uint32_t hpd_size, uint64_t hpd_gpu_addr);
213 int (*init_interrupts)(struct kgd_dev *kgd, uint32_t pipe_id);
215 int (*hqd_load)(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
216 uint32_t queue_id, uint32_t __user *wptr,
217 uint32_t wptr_shift, uint32_t wptr_mask,
218 struct mm_struct *mm);
220 int (*hqd_sdma_load)(struct kgd_dev *kgd, void *mqd,
221 uint32_t __user *wptr, struct mm_struct *mm);
223 int (*hqd_dump)(struct kgd_dev *kgd,
224 uint32_t pipe_id, uint32_t queue_id,
225 uint32_t (**dump)[2], uint32_t *n_regs);
227 int (*hqd_sdma_dump)(struct kgd_dev *kgd,
228 uint32_t engine_id, uint32_t queue_id,
229 uint32_t (**dump)[2], uint32_t *n_regs);
231 bool (*hqd_is_occupied)(struct kgd_dev *kgd, uint64_t queue_address,
232 uint32_t pipe_id, uint32_t queue_id);
234 int (*hqd_destroy)(struct kgd_dev *kgd, void *mqd, uint32_t reset_type,
235 unsigned int timeout, uint32_t pipe_id,
238 bool (*hqd_sdma_is_occupied)(struct kgd_dev *kgd, void *mqd);
240 int (*hqd_sdma_destroy)(struct kgd_dev *kgd, void *mqd,
241 unsigned int timeout);
243 int (*address_watch_disable)(struct kgd_dev *kgd);
244 int (*address_watch_execute)(struct kgd_dev *kgd,
245 unsigned int watch_point_id,
249 int (*wave_control_execute)(struct kgd_dev *kgd,
250 uint32_t gfx_index_val,
252 uint32_t (*address_watch_get_offset)(struct kgd_dev *kgd,
253 unsigned int watch_point_id,
254 unsigned int reg_offset);
255 bool (*get_atc_vmid_pasid_mapping_valid)(
258 uint16_t (*get_atc_vmid_pasid_mapping_pasid)(
261 void (*write_vmid_invalidate_request)(struct kgd_dev *kgd,
264 uint16_t (*get_fw_version)(struct kgd_dev *kgd,
265 enum kgd_engine_type type);
266 void (*set_scratch_backing_va)(struct kgd_dev *kgd,
267 uint64_t va, uint32_t vmid);
268 int (*get_tile_config)(struct kgd_dev *kgd, struct tile_config *config);
270 void (*get_cu_info)(struct kgd_dev *kgd,
271 struct kfd_cu_info *cu_info);
272 uint64_t (*get_vram_usage)(struct kgd_dev *kgd);
276 * struct kgd2kfd_calls
278 * @exit: Notifies amdkfd that kgd module is unloaded
280 * @probe: Notifies amdkfd about a probe done on a device in the kgd driver.
282 * @device_init: Initialize the newly probed device (if it is a device that
285 * @device_exit: Notifies amdkfd about a removal of a kgd device
287 * @suspend: Notifies amdkfd about a suspend action done to a kgd device
289 * @resume: Notifies amdkfd about a resume action done to a kgd device
291 * This structure contains function callback pointers so the kgd driver
292 * will notify to the amdkfd about certain status changes.
295 struct kgd2kfd_calls {
297 struct kfd_dev* (*probe)(struct kgd_dev *kgd, struct pci_dev *pdev,
298 const struct kfd2kgd_calls *f2g);
299 bool (*device_init)(struct kfd_dev *kfd,
300 const struct kgd2kfd_shared_resources *gpu_resources);
301 void (*device_exit)(struct kfd_dev *kfd);
302 void (*interrupt)(struct kfd_dev *kfd, const void *ih_ring_entry);
303 void (*suspend)(struct kfd_dev *kfd);
304 int (*resume)(struct kfd_dev *kfd);
307 int kgd2kfd_init(unsigned interface_version,
308 const struct kgd2kfd_calls **g2f);
310 #endif /* KGD_KFD_INTERFACE_H_INCLUDED */