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
  33 struct pci_dev;
  34
  35 #define KFD_INTERFACE_VERSION 1
  36
  37 struct kfd_dev;
  38 struct kgd_dev;
  39
  40 struct kgd_mem;
  41
  42 enum kgd_memory_pool {
  43         KGD_POOL_SYSTEM_CACHEABLE = 1,
  44         KGD_POOL_SYSTEM_WRITECOMBINE = 2,
  45         KGD_POOL_FRAMEBUFFER = 3,
  46 };
  47
  48 enum kgd_engine_type {
  49         KGD_ENGINE_PFP = 1,
  50         KGD_ENGINE_ME,
  51         KGD_ENGINE_CE,
  52         KGD_ENGINE_MEC1,
  53         KGD_ENGINE_MEC2,
  54         KGD_ENGINE_RLC,
  55         KGD_ENGINE_SDMA,
  56         KGD_ENGINE_MAX
  57 };
  58
  59 struct kgd2kfd_shared_resources {
  60         /* Bit n == 1 means VMID n is available for KFD. */
  61         unsigned int compute_vmid_bitmap;
  62
  63         /* Compute pipes are counted starting from MEC0/pipe0 as 0. */
  64         unsigned int first_compute_pipe;
  65
  66         /* Number of MEC pipes available for KFD. */
  67         unsigned int compute_pipe_count;
  68
  69         /* Base address of doorbell aperture. */
  70         phys_addr_t doorbell_physical_address;
  71
  72         /* Size in bytes of doorbell aperture. */
  73         size_t doorbell_aperture_size;
  74
  75         /* Number of bytes at start of aperture reserved for KGD. */
  76         size_t doorbell_start_offset;
  77 };
  78
  79 /**
  80  * struct kgd2kfd_calls
  81  *
  82  * @exit: Notifies amdkfd that kgd module is unloaded
  83  *
  84  * @probe: Notifies amdkfd about a probe done on a device in the kgd driver.
  85  *
  86  * @device_init: Initialize the newly probed device (if it is a device that
  87  * amdkfd supports)
  88  *
  89  * @device_exit: Notifies amdkfd about a removal of a kgd device
  90  *
  91  * @suspend: Notifies amdkfd about a suspend action done to a kgd device
  92  *
  93  * @resume: Notifies amdkfd about a resume action done to a kgd device
  94  *
  95  * This structure contains function callback pointers so the kgd driver
  96  * will notify to the amdkfd about certain status changes.
  97  *
  98  */
  99 struct kgd2kfd_calls {
 100         void (*exit)(void);
 101         struct kfd_dev* (*probe)(struct kgd_dev *kgd, struct pci_dev *pdev);
 102         bool (*device_init)(struct kfd_dev *kfd,
 103                         const struct kgd2kfd_shared_resources *gpu_resources);
 104         void (*device_exit)(struct kfd_dev *kfd);
 105         void (*interrupt)(struct kfd_dev *kfd, const void *ih_ring_entry);
 106         void (*suspend)(struct kfd_dev *kfd);
 107         int (*resume)(struct kfd_dev *kfd);
 108 };
 109
 110 /**
 111  * struct kfd2kgd_calls
 112  *
 113  * @init_gtt_mem_allocation: Allocate a buffer on the gart aperture.
 114  * The buffer can be used for mqds, hpds, kernel queue, fence and runlists
 115  *
 116  * @free_gtt_mem: Frees a buffer that was allocated on the gart aperture
 117  *
 118  * @get_vmem_size: Retrieves (physical) size of VRAM
 119  *
 120  * @get_gpu_clock_counter: Retrieves GPU clock counter
 121  *
 122  * @get_max_engine_clock_in_mhz: Retrieves maximum GPU clock in MHz
 123  *
 124  * @program_sh_mem_settings: A function that should initiate the memory
 125  * properties such as main aperture memory type (cache / non cached) and
 126  * secondary aperture base address, size and memory type.
 127  * This function is used only for no cp scheduling mode.
 128  *
 129  * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp
 130  * scheduling mode. Only used for no cp scheduling mode.
 131  *
 132  * @init_pipeline: Initialized the compute pipelines.
 133  *
 134  * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp
 135  * sceduling mode.
 136  *
 137  * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot.
 138  * used only for no HWS mode.
 139  *
 140  * @hqd_is_occupies: Checks if a hqd slot is occupied.
 141  *
 142  * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot.
 143  *
 144  * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied.
 145  *
 146  * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that
 147  * SDMA hqd slot.
 148  *
 149  * @get_fw_version: Returns FW versions from the header
 150  *
 151  * This structure contains function pointers to services that the kgd driver
 152  * provides to amdkfd driver.
 153  *
 154  */
 155 struct kfd2kgd_calls {
 156         int (*init_gtt_mem_allocation)(struct kgd_dev *kgd, size_t size,
 157                                         void **mem_obj, uint64_t *gpu_addr,
 158                                         void **cpu_ptr);
 159
 160         void (*free_gtt_mem)(struct kgd_dev *kgd, void *mem_obj);
 161
 162         uint64_t (*get_vmem_size)(struct kgd_dev *kgd);
 163         uint64_t (*get_gpu_clock_counter)(struct kgd_dev *kgd);
 164
 165         uint32_t (*get_max_engine_clock_in_mhz)(struct kgd_dev *kgd);
 166
 167         /* Register access functions */
 168         void (*program_sh_mem_settings)(struct kgd_dev *kgd, uint32_t vmid,
 169                         uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
 170                         uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases);
 171
 172         int (*set_pasid_vmid_mapping)(struct kgd_dev *kgd, unsigned int pasid,
 173                                         unsigned int vmid);
 174
 175         int (*init_pipeline)(struct kgd_dev *kgd, uint32_t pipe_id,
 176                                 uint32_t hpd_size, uint64_t hpd_gpu_addr);
 177
 178         int (*hqd_load)(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
 179                         uint32_t queue_id, uint32_t __user *wptr);
 180
 181         int (*hqd_sdma_load)(struct kgd_dev *kgd, void *mqd);
 182
 183         bool (*hqd_is_occupied)(struct kgd_dev *kgd, uint64_t queue_address,
 184                                 uint32_t pipe_id, uint32_t queue_id);
 185
 186         int (*hqd_destroy)(struct kgd_dev *kgd, uint32_t reset_type,
 187                                 unsigned int timeout, uint32_t pipe_id,
 188                                 uint32_t queue_id);
 189
 190         bool (*hqd_sdma_is_occupied)(struct kgd_dev *kgd, void *mqd);
 191
 192         int (*hqd_sdma_destroy)(struct kgd_dev *kgd, void *mqd,
 193                                 unsigned int timeout);
 194
 195         uint16_t (*get_fw_version)(struct kgd_dev *kgd,
 196                                 enum kgd_engine_type type);
 197 };
 198
 199 bool kgd2kfd_init(unsigned interface_version,
 200                 const struct kfd2kgd_calls *f2g,
 201                 const struct kgd2kfd_calls **g2f);
 202
 203 #endif  /* KGD_KFD_INTERFACE_H_INCLUDED */