drivers/gpu/drm/amd/include/kgd_kfd_interface.h

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   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:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  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.
  21  */
  22
  23 /*
  24  * This file defines the private interface between the
  25  * AMD kernel graphics drivers and the AMD KFD.
  26  */
  27
  28 #ifndef KGD_KFD_INTERFACE_H_INCLUDED
  29 #define KGD_KFD_INTERFACE_H_INCLUDED
  30
  31 #include <linux/types.h>
  32 #include <linux/bitmap.h>
  33
  34 struct pci_dev;
  35
  36 #define KFD_INTERFACE_VERSION 2
  37 #define KGD_MAX_QUEUES 128
  38
  39 struct kfd_dev;
  40 struct kgd_dev;
  41
  42 struct kgd_mem;
  43
  44 enum kfd_preempt_type {
  45         KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN = 0,
  46         KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
  47 };
  48
  49 enum kgd_memory_pool {
  50         KGD_POOL_SYSTEM_CACHEABLE = 1,
  51         KGD_POOL_SYSTEM_WRITECOMBINE = 2,
  52         KGD_POOL_FRAMEBUFFER = 3,
  53 };
  54
  55 enum kgd_engine_type {
  56         KGD_ENGINE_PFP = 1,
  57         KGD_ENGINE_ME,
  58         KGD_ENGINE_CE,
  59         KGD_ENGINE_MEC1,
  60         KGD_ENGINE_MEC2,
  61         KGD_ENGINE_RLC,
  62         KGD_ENGINE_SDMA1,
  63         KGD_ENGINE_SDMA2,
  64         KGD_ENGINE_MAX
  65 };
  66
  67 struct kgd2kfd_shared_resources {
  68         /* Bit n == 1 means VMID n is available for KFD. */
  69         unsigned int compute_vmid_bitmap;
  70
  71         /* number of pipes per mec */
  72         uint32_t num_pipe_per_mec;
  73
  74         /* number of queues per pipe */
  75         uint32_t num_queue_per_pipe;
  76
  77         /* Bit n == 1 means Queue n is available for KFD */
  78         DECLARE_BITMAP(queue_bitmap, KGD_MAX_QUEUES);
  79
  80         /* Base address of doorbell aperture. */
  81         phys_addr_t doorbell_physical_address;
  82
  83         /* Size in bytes of doorbell aperture. */
  84         size_t doorbell_aperture_size;
  85
  86         /* Number of bytes at start of aperture reserved for KGD. */
  87         size_t doorbell_start_offset;
  88 };
  89
  90 struct tile_config {
  91         uint32_t *tile_config_ptr;
  92         uint32_t *macro_tile_config_ptr;
  93         uint32_t num_tile_configs;
  94         uint32_t num_macro_tile_configs;
  95
  96         uint32_t gb_addr_config;
  97         uint32_t num_banks;
  98         uint32_t num_ranks;
  99 };
 100
 101 /**
 102  * struct kfd2kgd_calls
 103  *
 104  * @init_gtt_mem_allocation: Allocate a buffer on the gart aperture.
 105  * The buffer can be used for mqds, hpds, kernel queue, fence and runlists
 106  *
 107  * @free_gtt_mem: Frees a buffer that was allocated on the gart aperture
 108  *
 109  * @get_vmem_size: Retrieves (physical) size of VRAM
 110  *
 111  * @get_gpu_clock_counter: Retrieves GPU clock counter
 112  *
 113  * @get_max_engine_clock_in_mhz: Retrieves maximum GPU clock in MHz
 114  *
 115  * @alloc_pasid: Allocate a PASID
 116  * @free_pasid: Free a PASID
 117  *
 118  * @program_sh_mem_settings: A function that should initiate the memory
 119  * properties such as main aperture memory type (cache / non cached) and
 120  * secondary aperture base address, size and memory type.
 121  * This function is used only for no cp scheduling mode.
 122  *
 123  * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp
 124  * scheduling mode. Only used for no cp scheduling mode.
 125  *
 126  * @init_pipeline: Initialized the compute pipelines.
 127  *
 128  * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp
 129  * sceduling mode.
 130  *
 131  * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot.
 132  * used only for no HWS mode.
 133  *
 134  * @hqd_is_occupies: Checks if a hqd slot is occupied.
 135  *
 136  * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot.
 137  *
 138  * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied.
 139  *
 140  * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that
 141  * SDMA hqd slot.
 142  *
 143  * @get_fw_version: Returns FW versions from the header
 144  *
 145  * @set_scratch_backing_va: Sets VA for scratch backing memory of a VMID.
 146  * Only used for no cp scheduling mode
 147  *
 148  * @get_tile_config: Returns GPU-specific tiling mode information
 149  *
 150  * This structure contains function pointers to services that the kgd driver
 151  * provides to amdkfd driver.
 152  *
 153  */
 154 struct kfd2kgd_calls {
 155         int (*init_gtt_mem_allocation)(struct kgd_dev *kgd, size_t size,
 156                                         void **mem_obj, uint64_t *gpu_addr,
 157                                         void **cpu_ptr);
 158
 159         void (*free_gtt_mem)(struct kgd_dev *kgd, void *mem_obj);
 160
 161         uint64_t (*get_vmem_size)(struct kgd_dev *kgd);
 162         uint64_t (*get_gpu_clock_counter)(struct kgd_dev *kgd);
 163
 164         uint32_t (*get_max_engine_clock_in_mhz)(struct kgd_dev *kgd);
 165
 166         int (*alloc_pasid)(unsigned int bits);
 167         void (*free_pasid)(unsigned int pasid);
 168
 169         /* Register access functions */
 170         void (*program_sh_mem_settings)(struct kgd_dev *kgd, uint32_t vmid,
 171                         uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
 172                         uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases);
 173
 174         int (*set_pasid_vmid_mapping)(struct kgd_dev *kgd, unsigned int pasid,
 175                                         unsigned int vmid);
 176
 177         int (*init_pipeline)(struct kgd_dev *kgd, uint32_t pipe_id,
 178                                 uint32_t hpd_size, uint64_t hpd_gpu_addr);
 179
 180         int (*init_interrupts)(struct kgd_dev *kgd, uint32_t pipe_id);
 181
 182         int (*hqd_load)(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
 183                         uint32_t queue_id, uint32_t __user *wptr,
 184                         uint32_t wptr_shift, uint32_t wptr_mask,
 185                         struct mm_struct *mm);
 186
 187         int (*hqd_sdma_load)(struct kgd_dev *kgd, void *mqd);
 188
 189         bool (*hqd_is_occupied)(struct kgd_dev *kgd, uint64_t queue_address,
 190                                 uint32_t pipe_id, uint32_t queue_id);
 191
 192         int (*hqd_destroy)(struct kgd_dev *kgd, void *mqd, uint32_t reset_type,
 193                                 unsigned int timeout, uint32_t pipe_id,
 194                                 uint32_t queue_id);
 195
 196         bool (*hqd_sdma_is_occupied)(struct kgd_dev *kgd, void *mqd);
 197
 198         int (*hqd_sdma_destroy)(struct kgd_dev *kgd, void *mqd,
 199                                 unsigned int timeout);
 200
 201         int (*address_watch_disable)(struct kgd_dev *kgd);
 202         int (*address_watch_execute)(struct kgd_dev *kgd,
 203                                         unsigned int watch_point_id,
 204                                         uint32_t cntl_val,
 205                                         uint32_t addr_hi,
 206                                         uint32_t addr_lo);
 207         int (*wave_control_execute)(struct kgd_dev *kgd,
 208                                         uint32_t gfx_index_val,
 209                                         uint32_t sq_cmd);
 210         uint32_t (*address_watch_get_offset)(struct kgd_dev *kgd,
 211                                         unsigned int watch_point_id,
 212                                         unsigned int reg_offset);
 213         bool (*get_atc_vmid_pasid_mapping_valid)(
 214                                         struct kgd_dev *kgd,
 215                                         uint8_t vmid);
 216         uint16_t (*get_atc_vmid_pasid_mapping_pasid)(
 217                                         struct kgd_dev *kgd,
 218                                         uint8_t vmid);
 219         void (*write_vmid_invalidate_request)(struct kgd_dev *kgd,
 220                                         uint8_t vmid);
 221
 222         uint16_t (*get_fw_version)(struct kgd_dev *kgd,
 223                                 enum kgd_engine_type type);
 224         void (*set_scratch_backing_va)(struct kgd_dev *kgd,
 225                                 uint64_t va, uint32_t vmid);
 226         int (*get_tile_config)(struct kgd_dev *kgd, struct tile_config *config);
 227 };
 228
 229 /**
 230  * struct kgd2kfd_calls
 231  *
 232  * @exit: Notifies amdkfd that kgd module is unloaded
 233  *
 234  * @probe: Notifies amdkfd about a probe done on a device in the kgd driver.
 235  *
 236  * @device_init: Initialize the newly probed device (if it is a device that
 237  * amdkfd supports)
 238  *
 239  * @device_exit: Notifies amdkfd about a removal of a kgd device
 240  *
 241  * @suspend: Notifies amdkfd about a suspend action done to a kgd device
 242  *
 243  * @resume: Notifies amdkfd about a resume action done to a kgd device
 244  *
 245  * This structure contains function callback pointers so the kgd driver
 246  * will notify to the amdkfd about certain status changes.
 247  *
 248  */
 249 struct kgd2kfd_calls {
 250         void (*exit)(void);
 251         struct kfd_dev* (*probe)(struct kgd_dev *kgd, struct pci_dev *pdev,
 252                 const struct kfd2kgd_calls *f2g);
 253         bool (*device_init)(struct kfd_dev *kfd,
 254                         const struct kgd2kfd_shared_resources *gpu_resources);
 255         void (*device_exit)(struct kfd_dev *kfd);
 256         void (*interrupt)(struct kfd_dev *kfd, const void *ih_ring_entry);
 257         void (*suspend)(struct kfd_dev *kfd);
 258         int (*resume)(struct kfd_dev *kfd);
 259 };
 260
 261 int kgd2kfd_init(unsigned interface_version,
 262                 const struct kgd2kfd_calls **g2f);
 263
 264 #endif  /* KGD_KFD_INTERFACE_H_INCLUDED */