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->gfx.funcs->get_gpu_clock_counter) 244 return rdev->gfx.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 } 255