2 * Copyright 2014 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
23 #include "amdgpu_amdkfd.h"
24 #include "amd_shared.h"
27 #include <linux/module.h>
29 const struct kfd2kgd_calls *kfd2kgd;
30 const struct kgd2kfd_calls *kgd2kfd;
31 bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
33 int amdgpu_amdkfd_init(void)
37 #if defined(CONFIG_HSA_AMD_MODULE)
38 int (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
40 kgd2kfd_init_p = symbol_request(kgd2kfd_init);
42 if (kgd2kfd_init_p == NULL)
45 ret = kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd);
47 symbol_put(kgd2kfd_init);
51 #elif defined(CONFIG_HSA_AMD)
52 ret = kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd);
63 bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev)
65 switch (rdev->asic_type) {
66 #ifdef CONFIG_DRM_AMDGPU_CIK
68 kfd2kgd = amdgpu_amdkfd_gfx_7_get_functions();
72 kfd2kgd = amdgpu_amdkfd_gfx_8_0_get_functions();
81 void amdgpu_amdkfd_fini(void)
85 symbol_put(kgd2kfd_init);
89 void amdgpu_amdkfd_device_probe(struct amdgpu_device *rdev)
92 rdev->kfd = kgd2kfd->probe((struct kgd_dev *)rdev,
96 void amdgpu_amdkfd_device_init(struct amdgpu_device *rdev)
99 struct kgd2kfd_shared_resources gpu_resources = {
100 .compute_vmid_bitmap = 0xFF00,
102 .first_compute_pipe = 1,
103 .compute_pipe_count = 4 - 1,
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);
111 kgd2kfd->device_init(rdev->kfd, &gpu_resources);
115 void amdgpu_amdkfd_device_fini(struct amdgpu_device *rdev)
118 kgd2kfd->device_exit(rdev->kfd);
123 void amdgpu_amdkfd_interrupt(struct amdgpu_device *rdev,
124 const void *ih_ring_entry)
127 kgd2kfd->interrupt(rdev->kfd, ih_ring_entry);
130 void amdgpu_amdkfd_suspend(struct amdgpu_device *rdev)
133 kgd2kfd->suspend(rdev->kfd);
136 int amdgpu_amdkfd_resume(struct amdgpu_device *rdev)
141 r = kgd2kfd->resume(rdev->kfd);
146 int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
147 void **mem_obj, uint64_t *gpu_addr,
150 struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
151 struct kgd_mem **mem = (struct kgd_mem **) mem_obj;
155 BUG_ON(gpu_addr == NULL);
156 BUG_ON(cpu_ptr == NULL);
158 *mem = kmalloc(sizeof(struct kgd_mem), GFP_KERNEL);
162 r = amdgpu_bo_create(rdev, size, PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_GTT,
163 AMDGPU_GEM_CREATE_CPU_GTT_USWC, NULL, NULL, &(*mem)->bo);
166 "failed to allocate BO for amdkfd (%d)\n", r);
171 r = amdgpu_bo_reserve((*mem)->bo, true);
173 dev_err(rdev->dev, "(%d) failed to reserve bo for amdkfd\n", r);
174 goto allocate_mem_reserve_bo_failed;
177 r = amdgpu_bo_pin((*mem)->bo, AMDGPU_GEM_DOMAIN_GTT,
180 dev_err(rdev->dev, "(%d) failed to pin bo for amdkfd\n", r);
181 goto allocate_mem_pin_bo_failed;
183 *gpu_addr = (*mem)->gpu_addr;
185 r = amdgpu_bo_kmap((*mem)->bo, &(*mem)->cpu_ptr);
188 "(%d) failed to map bo to kernel for amdkfd\n", r);
189 goto allocate_mem_kmap_bo_failed;
191 *cpu_ptr = (*mem)->cpu_ptr;
193 amdgpu_bo_unreserve((*mem)->bo);
197 allocate_mem_kmap_bo_failed:
198 amdgpu_bo_unpin((*mem)->bo);
199 allocate_mem_pin_bo_failed:
200 amdgpu_bo_unreserve((*mem)->bo);
201 allocate_mem_reserve_bo_failed:
202 amdgpu_bo_unref(&(*mem)->bo);
207 void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj)
209 struct kgd_mem *mem = (struct kgd_mem *) mem_obj;
213 amdgpu_bo_reserve(mem->bo, true);
214 amdgpu_bo_kunmap(mem->bo);
215 amdgpu_bo_unpin(mem->bo);
216 amdgpu_bo_unreserve(mem->bo);
217 amdgpu_bo_unref(&(mem->bo));
221 uint64_t get_vmem_size(struct kgd_dev *kgd)
223 struct amdgpu_device *rdev =
224 (struct amdgpu_device *)kgd;
228 return rdev->mc.real_vram_size;
231 uint64_t get_gpu_clock_counter(struct kgd_dev *kgd)
233 struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
235 if (rdev->gfx.funcs->get_gpu_clock_counter)
236 return rdev->gfx.funcs->get_gpu_clock_counter(rdev);
240 uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd)
242 struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
244 /* The sclk is in quantas of 10kHz */
245 return rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk / 100;