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