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130e0371 OG |
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 "amdgpu_family.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 | default: | |
55 | return false; | |
56 | } | |
57 | ||
58 | #if defined(CONFIG_HSA_AMD_MODULE) | |
59 | kgd2kfd_init_p = symbol_request(kgd2kfd_init); | |
60 | ||
61 | if (kgd2kfd_init_p == NULL) { | |
62 | kfd2kgd = NULL; | |
63 | return false; | |
64 | } | |
65 | ||
66 | if (!kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd)) { | |
67 | symbol_put(kgd2kfd_init); | |
68 | kfd2kgd = NULL; | |
69 | kgd2kfd = NULL; | |
70 | ||
71 | return false; | |
72 | } | |
73 | ||
74 | return true; | |
75 | #elif defined(CONFIG_HSA_AMD) | |
76 | if (!kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd)) { | |
77 | kfd2kgd = NULL; | |
78 | kgd2kfd = NULL; | |
79 | return false; | |
80 | } | |
81 | ||
82 | return true; | |
83 | #else | |
84 | kfd2kgd = NULL; | |
85 | return false; | |
86 | #endif | |
87 | } | |
88 | ||
89 | void amdgpu_amdkfd_fini(void) | |
90 | { | |
91 | if (kgd2kfd) { | |
92 | kgd2kfd->exit(); | |
93 | symbol_put(kgd2kfd_init); | |
94 | } | |
95 | } | |
96 | ||
97 | void amdgpu_amdkfd_device_probe(struct amdgpu_device *rdev) | |
98 | { | |
99 | if (kgd2kfd) | |
100 | rdev->kfd = kgd2kfd->probe((struct kgd_dev *)rdev, | |
101 | rdev->pdev, kfd2kgd); | |
102 | } | |
103 | ||
104 | void amdgpu_amdkfd_device_init(struct amdgpu_device *rdev) | |
105 | { | |
106 | if (rdev->kfd) { | |
107 | struct kgd2kfd_shared_resources gpu_resources = { | |
108 | .compute_vmid_bitmap = 0xFF00, | |
109 | ||
110 | .first_compute_pipe = 1, | |
111 | .compute_pipe_count = 4 - 1, | |
112 | }; | |
113 | ||
114 | amdgpu_doorbell_get_kfd_info(rdev, | |
115 | &gpu_resources.doorbell_physical_address, | |
116 | &gpu_resources.doorbell_aperture_size, | |
117 | &gpu_resources.doorbell_start_offset); | |
118 | ||
119 | kgd2kfd->device_init(rdev->kfd, &gpu_resources); | |
120 | } | |
121 | } | |
122 | ||
123 | void amdgpu_amdkfd_device_fini(struct amdgpu_device *rdev) | |
124 | { | |
125 | if (rdev->kfd) { | |
126 | kgd2kfd->device_exit(rdev->kfd); | |
127 | rdev->kfd = NULL; | |
128 | } | |
129 | } | |
130 | ||
131 | void amdgpu_amdkfd_interrupt(struct amdgpu_device *rdev, | |
132 | const void *ih_ring_entry) | |
133 | { | |
134 | if (rdev->kfd) | |
135 | kgd2kfd->interrupt(rdev->kfd, ih_ring_entry); | |
136 | } | |
137 | ||
138 | void amdgpu_amdkfd_suspend(struct amdgpu_device *rdev) | |
139 | { | |
140 | if (rdev->kfd) | |
141 | kgd2kfd->suspend(rdev->kfd); | |
142 | } | |
143 | ||
144 | int amdgpu_amdkfd_resume(struct amdgpu_device *rdev) | |
145 | { | |
146 | int r = 0; | |
147 | ||
148 | if (rdev->kfd) | |
149 | r = kgd2kfd->resume(rdev->kfd); | |
150 | ||
151 | return r; | |
152 | } | |
153 | ||
154 | u32 pool_to_domain(enum kgd_memory_pool p) | |
155 | { | |
156 | switch (p) { | |
157 | case KGD_POOL_FRAMEBUFFER: return AMDGPU_GEM_DOMAIN_VRAM; | |
158 | default: return AMDGPU_GEM_DOMAIN_GTT; | |
159 | } | |
160 | } | |
161 | ||
162 | int alloc_gtt_mem(struct kgd_dev *kgd, size_t size, | |
163 | void **mem_obj, uint64_t *gpu_addr, | |
164 | void **cpu_ptr) | |
165 | { | |
166 | struct amdgpu_device *rdev = (struct amdgpu_device *)kgd; | |
167 | struct kgd_mem **mem = (struct kgd_mem **) mem_obj; | |
168 | int r; | |
169 | ||
170 | BUG_ON(kgd == NULL); | |
171 | BUG_ON(gpu_addr == NULL); | |
172 | BUG_ON(cpu_ptr == NULL); | |
173 | ||
174 | *mem = kmalloc(sizeof(struct kgd_mem), GFP_KERNEL); | |
175 | if ((*mem) == NULL) | |
176 | return -ENOMEM; | |
177 | ||
178 | r = amdgpu_bo_create(rdev, size, PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_GTT, | |
179 | AMDGPU_GEM_CREATE_CPU_GTT_USWC, NULL, &(*mem)->bo); | |
180 | if (r) { | |
181 | dev_err(rdev->dev, | |
182 | "failed to allocate BO for amdkfd (%d)\n", r); | |
183 | return r; | |
184 | } | |
185 | ||
186 | /* map the buffer */ | |
187 | r = amdgpu_bo_reserve((*mem)->bo, true); | |
188 | if (r) { | |
189 | dev_err(rdev->dev, "(%d) failed to reserve bo for amdkfd\n", r); | |
190 | goto allocate_mem_reserve_bo_failed; | |
191 | } | |
192 | ||
193 | r = amdgpu_bo_pin((*mem)->bo, AMDGPU_GEM_DOMAIN_GTT, | |
194 | &(*mem)->gpu_addr); | |
195 | if (r) { | |
196 | dev_err(rdev->dev, "(%d) failed to pin bo for amdkfd\n", r); | |
197 | goto allocate_mem_pin_bo_failed; | |
198 | } | |
199 | *gpu_addr = (*mem)->gpu_addr; | |
200 | ||
201 | r = amdgpu_bo_kmap((*mem)->bo, &(*mem)->cpu_ptr); | |
202 | if (r) { | |
203 | dev_err(rdev->dev, | |
204 | "(%d) failed to map bo to kernel for amdkfd\n", r); | |
205 | goto allocate_mem_kmap_bo_failed; | |
206 | } | |
207 | *cpu_ptr = (*mem)->cpu_ptr; | |
208 | ||
209 | amdgpu_bo_unreserve((*mem)->bo); | |
210 | ||
211 | return 0; | |
212 | ||
213 | allocate_mem_kmap_bo_failed: | |
214 | amdgpu_bo_unpin((*mem)->bo); | |
215 | allocate_mem_pin_bo_failed: | |
216 | amdgpu_bo_unreserve((*mem)->bo); | |
217 | allocate_mem_reserve_bo_failed: | |
218 | amdgpu_bo_unref(&(*mem)->bo); | |
219 | ||
220 | return r; | |
221 | } | |
222 | ||
223 | void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj) | |
224 | { | |
225 | struct kgd_mem *mem = (struct kgd_mem *) mem_obj; | |
226 | ||
227 | BUG_ON(mem == NULL); | |
228 | ||
229 | amdgpu_bo_reserve(mem->bo, true); | |
230 | amdgpu_bo_kunmap(mem->bo); | |
231 | amdgpu_bo_unpin(mem->bo); | |
232 | amdgpu_bo_unreserve(mem->bo); | |
233 | amdgpu_bo_unref(&(mem->bo)); | |
234 | kfree(mem); | |
235 | } | |
236 | ||
237 | uint64_t get_vmem_size(struct kgd_dev *kgd) | |
238 | { | |
239 | struct amdgpu_device *rdev = | |
240 | (struct amdgpu_device *)kgd; | |
241 | ||
242 | BUG_ON(kgd == NULL); | |
243 | ||
244 | return rdev->mc.real_vram_size; | |
245 | } | |
246 | ||
247 | uint64_t get_gpu_clock_counter(struct kgd_dev *kgd) | |
248 | { | |
249 | struct amdgpu_device *rdev = (struct amdgpu_device *)kgd; | |
250 | ||
251 | if (rdev->asic_funcs->get_gpu_clock_counter) | |
252 | return rdev->asic_funcs->get_gpu_clock_counter(rdev); | |
253 | return 0; | |
254 | } | |
255 | ||
256 | uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd) | |
257 | { | |
258 | struct amdgpu_device *rdev = (struct amdgpu_device *)kgd; | |
259 | ||
260 | /* The sclk is in quantas of 10kHz */ | |
261 | return rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk / 100; | |
262 | } |