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 int amdgpu_amdkfd_init(void)
  34 {
  35         int ret;
  36
  37 #if defined(CONFIG_HSA_AMD_MODULE)
  38         int (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
  39
  40         kgd2kfd_init_p = symbol_request(kgd2kfd_init);
  41
  42         if (kgd2kfd_init_p == NULL)
  43                 return -ENOENT;
  44
  45         ret = kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd);
  46         if (ret) {
  47                 symbol_put(kgd2kfd_init);
  48                 kgd2kfd = NULL;
  49         }
  50
  51 #elif defined(CONFIG_HSA_AMD)
  52         ret = kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd);
  53         if (ret)
  54                 kgd2kfd = NULL;
  55
  56 #else
  57         ret = -ENOENT;
  58 #endif
  59
  60         return ret;
  61 }
  62
  63 bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev)
  64 {
  65         switch (rdev->asic_type) {
  66 #ifdef CONFIG_DRM_AMDGPU_CIK
  67         case CHIP_KAVERI:
  68                 kfd2kgd = amdgpu_amdkfd_gfx_7_get_functions();
  69                 break;
  70 #endif
  71         case CHIP_CARRIZO:
  72                 kfd2kgd = amdgpu_amdkfd_gfx_8_0_get_functions();
  73                 break;
  74         default:
  75                 return false;
  76         }
  77
  78         return true;
  79 }
  80
  81 void amdgpu_amdkfd_fini(void)
  82 {
  83         if (kgd2kfd) {
  84                 kgd2kfd->exit();
  85                 symbol_put(kgd2kfd_init);
  86         }
  87 }
  88
  89 void amdgpu_amdkfd_device_probe(struct amdgpu_device *rdev)
  90 {
  91         if (kgd2kfd)
  92                 rdev->kfd = kgd2kfd->probe((struct kgd_dev *)rdev,
  93                                         rdev->pdev, kfd2kgd);
  94 }
  95
  96 void amdgpu_amdkfd_device_init(struct amdgpu_device *rdev)
  97 {
  98         if (rdev->kfd) {
  99                 struct kgd2kfd_shared_resources gpu_resources = {
 100                         .compute_vmid_bitmap = 0xFF00,
 101
 102                         .first_compute_pipe = 1,
 103                         .compute_pipe_count = 4 - 1,
 104                 };
 105
 106                 amdgpu_doorbell_get_kfd_info(rdev,
 107                                 &gpu_resources.doorbell_physical_address,
 108                                 &gpu_resources.doorbell_aperture_size,
 109                                 &gpu_resources.doorbell_start_offset);
 110
 111                 kgd2kfd->device_init(rdev->kfd, &gpu_resources);
 112         }
 113 }
 114
 115 void amdgpu_amdkfd_device_fini(struct amdgpu_device *rdev)
 116 {
 117         if (rdev->kfd) {
 118                 kgd2kfd->device_exit(rdev->kfd);
 119                 rdev->kfd = NULL;
 120         }
 121 }
 122
 123 void amdgpu_amdkfd_interrupt(struct amdgpu_device *rdev,
 124                 const void *ih_ring_entry)
 125 {
 126         if (rdev->kfd)
 127                 kgd2kfd->interrupt(rdev->kfd, ih_ring_entry);
 128 }
 129
 130 void amdgpu_amdkfd_suspend(struct amdgpu_device *rdev)
 131 {
 132         if (rdev->kfd)
 133                 kgd2kfd->suspend(rdev->kfd);
 134 }
 135
 136 int amdgpu_amdkfd_resume(struct amdgpu_device *rdev)
 137 {
 138         int r = 0;
 139
 140         if (rdev->kfd)
 141                 r = kgd2kfd->resume(rdev->kfd);
 142
 143         return r;
 144 }
 145
 146 u32 pool_to_domain(enum kgd_memory_pool p)
 147 {
 148         switch (p) {
 149         case KGD_POOL_FRAMEBUFFER: return AMDGPU_GEM_DOMAIN_VRAM;
 150         default: return AMDGPU_GEM_DOMAIN_GTT;
 151         }
 152 }
 153
 154 int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 155                         void **mem_obj, uint64_t *gpu_addr,
 156                         void **cpu_ptr)
 157 {
 158         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 159         struct kgd_mem **mem = (struct kgd_mem **) mem_obj;
 160         int r;
 161
 162         BUG_ON(kgd == NULL);
 163         BUG_ON(gpu_addr == NULL);
 164         BUG_ON(cpu_ptr == NULL);
 165
 166         *mem = kmalloc(sizeof(struct kgd_mem), GFP_KERNEL);
 167         if ((*mem) == NULL)
 168                 return -ENOMEM;
 169
 170         r = amdgpu_bo_create(rdev, size, PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_GTT,
 171                              AMDGPU_GEM_CREATE_CPU_GTT_USWC, NULL, NULL, &(*mem)->bo);
 172         if (r) {
 173                 dev_err(rdev->dev,
 174                         "failed to allocate BO for amdkfd (%d)\n", r);
 175                 return r;
 176         }
 177
 178         /* map the buffer */
 179         r = amdgpu_bo_reserve((*mem)->bo, true);
 180         if (r) {
 181                 dev_err(rdev->dev, "(%d) failed to reserve bo for amdkfd\n", r);
 182                 goto allocate_mem_reserve_bo_failed;
 183         }
 184
 185         r = amdgpu_bo_pin((*mem)->bo, AMDGPU_GEM_DOMAIN_GTT,
 186                                 &(*mem)->gpu_addr);
 187         if (r) {
 188                 dev_err(rdev->dev, "(%d) failed to pin bo for amdkfd\n", r);
 189                 goto allocate_mem_pin_bo_failed;
 190         }
 191         *gpu_addr = (*mem)->gpu_addr;
 192
 193         r = amdgpu_bo_kmap((*mem)->bo, &(*mem)->cpu_ptr);
 194         if (r) {
 195                 dev_err(rdev->dev,
 196                         "(%d) failed to map bo to kernel for amdkfd\n", r);
 197                 goto allocate_mem_kmap_bo_failed;
 198         }
 199         *cpu_ptr = (*mem)->cpu_ptr;
 200
 201         amdgpu_bo_unreserve((*mem)->bo);
 202
 203         return 0;
 204
 205 allocate_mem_kmap_bo_failed:
 206         amdgpu_bo_unpin((*mem)->bo);
 207 allocate_mem_pin_bo_failed:
 208         amdgpu_bo_unreserve((*mem)->bo);
 209 allocate_mem_reserve_bo_failed:
 210         amdgpu_bo_unref(&(*mem)->bo);
 211
 212         return r;
 213 }
 214
 215 void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj)
 216 {
 217         struct kgd_mem *mem = (struct kgd_mem *) mem_obj;
 218
 219         BUG_ON(mem == NULL);
 220
 221         amdgpu_bo_reserve(mem->bo, true);
 222         amdgpu_bo_kunmap(mem->bo);
 223         amdgpu_bo_unpin(mem->bo);
 224         amdgpu_bo_unreserve(mem->bo);
 225         amdgpu_bo_unref(&(mem->bo));
 226         kfree(mem);
 227 }
 228
 229 uint64_t get_vmem_size(struct kgd_dev *kgd)
 230 {
 231         struct amdgpu_device *rdev =
 232                 (struct amdgpu_device *)kgd;
 233
 234         BUG_ON(kgd == NULL);
 235
 236         return rdev->mc.real_vram_size;
 237 }
 238
 239 uint64_t get_gpu_clock_counter(struct kgd_dev *kgd)
 240 {
 241         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 242
 243         if (rdev->asic_funcs->get_gpu_clock_counter)
 244                 return rdev->asic_funcs->get_gpu_clock_counter(rdev);
 245         return 0;
 246 }
 247
 248 uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd)
 249 {
 250         struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
 251
 252         /* The sclk is in quantas of 10kHz */
 253         return rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk / 100;
 254 }