drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c

   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 #include "amdgpu_amdkfd.h"
  24 #include "amdgpu_family.h"
  25 #include <drm/drmP.h>
  26 #include "amdgpu.h"
  27 #include <linux/module.h>
  28
  29 const struct kfd2kgd_calls *kfd2kgd;
  30 const struct kgd2kfd_calls *kgd2kfd;
  31 bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
  32
  33 bool amdgpu_amdkfd_init(void)
  34 {
  35 #if defined(CONFIG_HSA_AMD_MODULE)
  36         bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
  37
  38         kgd2kfd_init_p = symbol_request(kgd2kfd_init);
  39
  40         if (kgd2kfd_init_p == NULL)
  41                 return false;
  42 #endif
  43         return true;
  44 }
  45
  46 bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev)
  47 {
  48 #if defined(CONFIG_HSA_AMD_MODULE)
  49         bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
  50 #endif
  51
  52         switch (rdev->asic_type) {
  53         case CHIP_KAVERI:
  54         default:
  55                 return false;
  56         }
  57
  58 #if defined(CONFIG_HSA_AMD_MODULE)
  59         kgd2kfd_init_p = symbol_request(kgd2kfd_init);
  60
  61         if (kgd2kfd_init_p == NULL) {
  62                 kfd2kgd = NULL;
  63                 return false;
  64         }
  65
  66         if (!kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd)) {
  67                 symbol_put(kgd2kfd_init);
  68                 kfd2kgd = NULL;
  69                 kgd2kfd = NULL;
  70
  71                 return false;
  72         }
  73
  74         return true;
  75 #elif defined(CONFIG_HSA_AMD)
  76         if (!kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd)) {
  77                 kfd2kgd = NULL;
  78                 kgd2kfd = NULL;
  79                 return false;
  80         }
  81
  82         return true;
  83 #else
  84         kfd2kgd = NULL;
  85         return false;
  86 #endif
  87 }
  88
  89 void amdgpu_amdkfd_fini(void)
  90 {
  91         if (kgd2kfd) {
  92                 kgd2kfd->exit();
  93                 symbol_put(kgd2kfd_init);
  94         }
  95 }
  96
  97 void amdgpu_amdkfd_device_probe(struct amdgpu_device *rdev)
  98 {
  99         if (kgd2kfd)
 100                 rdev->kfd = kgd2kfd->probe((struct kgd_dev *)rdev,
 101                                         rdev->pdev, kfd2kgd);
 102 }
 103
 104 void amdgpu_amdkfd_device_init(struct amdgpu_device *rdev)
 105 {
 106         if (rdev->kfd) {
 107                 struct kgd2kfd_shared_resources gpu_resources = {
 108                         .compute_vmid_bitmap = 0xFF00,
 109
 110                         .first_compute_pipe = 1,
 111                         .compute_pipe_count = 4 - 1,
 112                 };
 113
 114                 amdgpu_doorbell_get_kfd_info(rdev,
 115                                 &gpu_resources.doorbell_physical_address,
 116                                 &gpu_resources.doorbell_aperture_size,
 117                                 &gpu_resources.doorbell_start_offset);
 118
 119                 kgd2kfd->device_init(rdev->kfd, &gpu_resources);
 120         }
 121 }
 122
 123 void amdgpu_amdkfd_device_fini(struct amdgpu_device *rdev)
 124 {
 125         if (rdev->kfd) {
 126                 kgd2kfd->device_exit(rdev->kfd);
 127                 rdev->kfd = NULL;
 128         }
 129 }
 130
 131 void amdgpu_amdkfd_interrupt(struct amdgpu_device *rdev,
 132                 const void *ih_ring_entry)
 133 {
 134         if (rdev->kfd)
 135                 kgd2kfd->interrupt(rdev->kfd, ih_ring_entry);
 136 }
 137
 138 void amdgpu_amdkfd_suspend(struct amdgpu_device *rdev)
 139 {
 140         if (rdev->kfd)
 141                 kgd2kfd->suspend(rdev->kfd);
 142 }
 143
 144 int amdgpu_amdkfd_resume(struct amdgpu_device *rdev)
 145 {
 146         int r = 0;
 147
 148         if (rdev->kfd)
 149                 r = kgd2kfd->resume(rdev->kfd);
 150
 151         return r;
 152 }
 153
 154 u32 pool_to_domain(enum kgd_memory_pool p)
 155 {
 156         switch (p) {
 157         case KGD_POOL_FRAMEBUFFER: return AMDGPU_GEM_DOMAIN_VRAM;
 158         default: return AMDGPU_GEM_DOMAIN_GTT;
 159         }
 160 }
 161
 162 int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 163                         void **mem_obj, uint64_t *gpu_addr,
 164                         void **cpu_ptr)
 165 {
 166         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 167         struct kgd_mem **mem = (struct kgd_mem **) mem_obj;
 168         int r;
 169
 170         BUG_ON(kgd == NULL);
 171         BUG_ON(gpu_addr == NULL);
 172         BUG_ON(cpu_ptr == NULL);
 173
 174         *mem = kmalloc(sizeof(struct kgd_mem), GFP_KERNEL);
 175         if ((*mem) == NULL)
 176                 return -ENOMEM;
 177
 178         r = amdgpu_bo_create(rdev, size, PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_GTT,
 179                         AMDGPU_GEM_CREATE_CPU_GTT_USWC, NULL, &(*mem)->bo);
 180         if (r) {
 181                 dev_err(rdev->dev,
 182                         "failed to allocate BO for amdkfd (%d)\n", r);
 183                 return r;
 184         }
 185
 186         /* map the buffer */
 187         r = amdgpu_bo_reserve((*mem)->bo, true);
 188         if (r) {
 189                 dev_err(rdev->dev, "(%d) failed to reserve bo for amdkfd\n", r);
 190                 goto allocate_mem_reserve_bo_failed;
 191         }
 192
 193         r = amdgpu_bo_pin((*mem)->bo, AMDGPU_GEM_DOMAIN_GTT,
 194                                 &(*mem)->gpu_addr);
 195         if (r) {
 196                 dev_err(rdev->dev, "(%d) failed to pin bo for amdkfd\n", r);
 197                 goto allocate_mem_pin_bo_failed;
 198         }
 199         *gpu_addr = (*mem)->gpu_addr;
 200
 201         r = amdgpu_bo_kmap((*mem)->bo, &(*mem)->cpu_ptr);
 202         if (r) {
 203                 dev_err(rdev->dev,
 204                         "(%d) failed to map bo to kernel for amdkfd\n", r);
 205                 goto allocate_mem_kmap_bo_failed;
 206         }
 207         *cpu_ptr = (*mem)->cpu_ptr;
 208
 209         amdgpu_bo_unreserve((*mem)->bo);
 210
 211         return 0;
 212
 213 allocate_mem_kmap_bo_failed:
 214         amdgpu_bo_unpin((*mem)->bo);
 215 allocate_mem_pin_bo_failed:
 216         amdgpu_bo_unreserve((*mem)->bo);
 217 allocate_mem_reserve_bo_failed:
 218         amdgpu_bo_unref(&(*mem)->bo);
 219
 220         return r;
 221 }
 222
 223 void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj)
 224 {
 225         struct kgd_mem *mem = (struct kgd_mem *) mem_obj;
 226
 227         BUG_ON(mem == NULL);
 228
 229         amdgpu_bo_reserve(mem->bo, true);
 230         amdgpu_bo_kunmap(mem->bo);
 231         amdgpu_bo_unpin(mem->bo);
 232         amdgpu_bo_unreserve(mem->bo);
 233         amdgpu_bo_unref(&(mem->bo));
 234         kfree(mem);
 235 }
 236
 237 uint64_t get_vmem_size(struct kgd_dev *kgd)
 238 {
 239         struct amdgpu_device *rdev =
 240                 (struct amdgpu_device *)kgd;
 241
 242         BUG_ON(kgd == NULL);
 243
 244         return rdev->mc.real_vram_size;
 245 }
 246
 247 uint64_t get_gpu_clock_counter(struct kgd_dev *kgd)
 248 {
 249         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 250
 251         if (rdev->asic_funcs->get_gpu_clock_counter)
 252                 return rdev->asic_funcs->get_gpu_clock_counter(rdev);
 253         return 0;
 254 }
 255
 256 uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd)
 257 {
 258         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 259
 260         /* The sclk is in quantas of 10kHz */
 261         return rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk / 100;
 262 }