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 "amd_shared.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 #ifdef CONFIG_DRM_AMDGPU_CIK
  54         case CHIP_KAVERI:
  55                 kfd2kgd = amdgpu_amdkfd_gfx_7_get_functions();
  56                 break;
  57 #endif
  58         case CHIP_CARRIZO:
  59                 kfd2kgd = amdgpu_amdkfd_gfx_8_0_get_functions();
  60                 break;
  61         default:
  62                 return false;
  63         }
  64
  65 #if defined(CONFIG_HSA_AMD_MODULE)
  66         kgd2kfd_init_p = symbol_request(kgd2kfd_init);
  67
  68         if (kgd2kfd_init_p == NULL) {
  69                 kfd2kgd = NULL;
  70                 return false;
  71         }
  72
  73         if (!kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd)) {
  74                 symbol_put(kgd2kfd_init);
  75                 kfd2kgd = NULL;
  76                 kgd2kfd = NULL;
  77
  78                 return false;
  79         }
  80
  81         return true;
  82 #elif defined(CONFIG_HSA_AMD)
  83         if (!kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd)) {
  84                 kfd2kgd = NULL;
  85                 kgd2kfd = NULL;
  86                 return false;
  87         }
  88
  89         return true;
  90 #else
  91         kfd2kgd = NULL;
  92         return false;
  93 #endif
  94 }
  95
  96 void amdgpu_amdkfd_fini(void)
  97 {
  98         if (kgd2kfd) {
  99                 kgd2kfd->exit();
 100                 symbol_put(kgd2kfd_init);
 101         }
 102 }
 103
 104 void amdgpu_amdkfd_device_probe(struct amdgpu_device *rdev)
 105 {
 106         if (kgd2kfd)
 107                 rdev->kfd = kgd2kfd->probe((struct kgd_dev *)rdev,
 108                                         rdev->pdev, kfd2kgd);
 109 }
 110
 111 void amdgpu_amdkfd_device_init(struct amdgpu_device *rdev)
 112 {
 113         if (rdev->kfd) {
 114                 struct kgd2kfd_shared_resources gpu_resources = {
 115                         .compute_vmid_bitmap = 0xFF00,
 116
 117                         .first_compute_pipe = 1,
 118                         .compute_pipe_count = 4 - 1,
 119                 };
 120
 121                 amdgpu_doorbell_get_kfd_info(rdev,
 122                                 &gpu_resources.doorbell_physical_address,
 123                                 &gpu_resources.doorbell_aperture_size,
 124                                 &gpu_resources.doorbell_start_offset);
 125
 126                 kgd2kfd->device_init(rdev->kfd, &gpu_resources);
 127         }
 128 }
 129
 130 void amdgpu_amdkfd_device_fini(struct amdgpu_device *rdev)
 131 {
 132         if (rdev->kfd) {
 133                 kgd2kfd->device_exit(rdev->kfd);
 134                 rdev->kfd = NULL;
 135         }
 136 }
 137
 138 void amdgpu_amdkfd_interrupt(struct amdgpu_device *rdev,
 139                 const void *ih_ring_entry)
 140 {
 141         if (rdev->kfd)
 142                 kgd2kfd->interrupt(rdev->kfd, ih_ring_entry);
 143 }
 144
 145 void amdgpu_amdkfd_suspend(struct amdgpu_device *rdev)
 146 {
 147         if (rdev->kfd)
 148                 kgd2kfd->suspend(rdev->kfd);
 149 }
 150
 151 int amdgpu_amdkfd_resume(struct amdgpu_device *rdev)
 152 {
 153         int r = 0;
 154
 155         if (rdev->kfd)
 156                 r = kgd2kfd->resume(rdev->kfd);
 157
 158         return r;
 159 }
 160
 161 u32 pool_to_domain(enum kgd_memory_pool p)
 162 {
 163         switch (p) {
 164         case KGD_POOL_FRAMEBUFFER: return AMDGPU_GEM_DOMAIN_VRAM;
 165         default: return AMDGPU_GEM_DOMAIN_GTT;
 166         }
 167 }
 168
 169 int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 170                         void **mem_obj, uint64_t *gpu_addr,
 171                         void **cpu_ptr)
 172 {
 173         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 174         struct kgd_mem **mem = (struct kgd_mem **) mem_obj;
 175         int r;
 176
 177         BUG_ON(kgd == NULL);
 178         BUG_ON(gpu_addr == NULL);
 179         BUG_ON(cpu_ptr == NULL);
 180
 181         *mem = kmalloc(sizeof(struct kgd_mem), GFP_KERNEL);
 182         if ((*mem) == NULL)
 183                 return -ENOMEM;
 184
 185         r = amdgpu_bo_create(rdev, size, PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_GTT,
 186                              AMDGPU_GEM_CREATE_CPU_GTT_USWC, NULL, NULL, &(*mem)->bo);
 187         if (r) {
 188                 dev_err(rdev->dev,
 189                         "failed to allocate BO for amdkfd (%d)\n", r);
 190                 return r;
 191         }
 192
 193         /* map the buffer */
 194         r = amdgpu_bo_reserve((*mem)->bo, true);
 195         if (r) {
 196                 dev_err(rdev->dev, "(%d) failed to reserve bo for amdkfd\n", r);
 197                 goto allocate_mem_reserve_bo_failed;
 198         }
 199
 200         r = amdgpu_bo_pin((*mem)->bo, AMDGPU_GEM_DOMAIN_GTT,
 201                                 &(*mem)->gpu_addr);
 202         if (r) {
 203                 dev_err(rdev->dev, "(%d) failed to pin bo for amdkfd\n", r);
 204                 goto allocate_mem_pin_bo_failed;
 205         }
 206         *gpu_addr = (*mem)->gpu_addr;
 207
 208         r = amdgpu_bo_kmap((*mem)->bo, &(*mem)->cpu_ptr);
 209         if (r) {
 210                 dev_err(rdev->dev,
 211                         "(%d) failed to map bo to kernel for amdkfd\n", r);
 212                 goto allocate_mem_kmap_bo_failed;
 213         }
 214         *cpu_ptr = (*mem)->cpu_ptr;
 215
 216         amdgpu_bo_unreserve((*mem)->bo);
 217
 218         return 0;
 219
 220 allocate_mem_kmap_bo_failed:
 221         amdgpu_bo_unpin((*mem)->bo);
 222 allocate_mem_pin_bo_failed:
 223         amdgpu_bo_unreserve((*mem)->bo);
 224 allocate_mem_reserve_bo_failed:
 225         amdgpu_bo_unref(&(*mem)->bo);
 226
 227         return r;
 228 }
 229
 230 void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj)
 231 {
 232         struct kgd_mem *mem = (struct kgd_mem *) mem_obj;
 233
 234         BUG_ON(mem == NULL);
 235
 236         amdgpu_bo_reserve(mem->bo, true);
 237         amdgpu_bo_kunmap(mem->bo);
 238         amdgpu_bo_unpin(mem->bo);
 239         amdgpu_bo_unreserve(mem->bo);
 240         amdgpu_bo_unref(&(mem->bo));
 241         kfree(mem);
 242 }
 243
 244 uint64_t get_vmem_size(struct kgd_dev *kgd)
 245 {
 246         struct amdgpu_device *rdev =
 247                 (struct amdgpu_device *)kgd;
 248
 249         BUG_ON(kgd == NULL);
 250
 251         return rdev->mc.real_vram_size;
 252 }
 253
 254 uint64_t get_gpu_clock_counter(struct kgd_dev *kgd)
 255 {
 256         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 257
 258         if (rdev->asic_funcs->get_gpu_clock_counter)
 259                 return rdev->asic_funcs->get_gpu_clock_counter(rdev);
 260         return 0;
 261 }
 262
 263 uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd)
 264 {
 265         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 266
 267         /* The sclk is in quantas of 10kHz */
 268         return rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk / 100;
 269 }