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24#include "amdgpu.h"
25#define MAX_KIQ_REG_WAIT 5000
26#define MAX_KIQ_REG_BAILOUT_INTERVAL 5
27#define MAX_KIQ_REG_TRY 20
28
29uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
30{
31 uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
32
33 addr -= AMDGPU_VA_RESERVED_SIZE;
34
35 if (addr >= AMDGPU_VA_HOLE_START)
36 addr |= AMDGPU_VA_HOLE_END;
37
38 return addr;
39}
40
41bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev)
42{
43
44
45
46 return RREG32_NO_KIQ(0xc040) == 0xffffffff;
47}
48
49int amdgpu_allocate_static_csa(struct amdgpu_device *adev)
50{
51 int r;
52 void *ptr;
53
54 r = amdgpu_bo_create_kernel(adev, AMDGPU_CSA_SIZE, PAGE_SIZE,
55 AMDGPU_GEM_DOMAIN_VRAM, &adev->virt.csa_obj,
56 &adev->virt.csa_vmid0_addr, &ptr);
57 if (r)
58 return r;
59
60 memset(ptr, 0, AMDGPU_CSA_SIZE);
61 return 0;
62}
63
64void amdgpu_free_static_csa(struct amdgpu_device *adev) {
65 amdgpu_bo_free_kernel(&adev->virt.csa_obj,
66 &adev->virt.csa_vmid0_addr,
67 NULL);
68}
69
70
71
72
73
74
75
76int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
77 struct amdgpu_bo_va **bo_va)
78{
79 uint64_t csa_addr = amdgpu_csa_vaddr(adev) & AMDGPU_VA_HOLE_MASK;
80 struct ww_acquire_ctx ticket;
81 struct list_head list;
82 struct amdgpu_bo_list_entry pd;
83 struct ttm_validate_buffer csa_tv;
84 int r;
85
86 INIT_LIST_HEAD(&list);
87 INIT_LIST_HEAD(&csa_tv.head);
88 csa_tv.bo = &adev->virt.csa_obj->tbo;
89 csa_tv.shared = true;
90
91 list_add(&csa_tv.head, &list);
92 amdgpu_vm_get_pd_bo(vm, &list, &pd);
93
94 r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
95 if (r) {
96 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
97 return r;
98 }
99
100 *bo_va = amdgpu_vm_bo_add(adev, vm, adev->virt.csa_obj);
101 if (!*bo_va) {
102 ttm_eu_backoff_reservation(&ticket, &list);
103 DRM_ERROR("failed to create bo_va for static CSA\n");
104 return -ENOMEM;
105 }
106
107 r = amdgpu_vm_alloc_pts(adev, (*bo_va)->base.vm, csa_addr,
108 AMDGPU_CSA_SIZE);
109 if (r) {
110 DRM_ERROR("failed to allocate pts for static CSA, err=%d\n", r);
111 amdgpu_vm_bo_rmv(adev, *bo_va);
112 ttm_eu_backoff_reservation(&ticket, &list);
113 return r;
114 }
115
116 r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, AMDGPU_CSA_SIZE,
117 AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE |
118 AMDGPU_PTE_EXECUTABLE);
119
120 if (r) {
121 DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r);
122 amdgpu_vm_bo_rmv(adev, *bo_va);
123 ttm_eu_backoff_reservation(&ticket, &list);
124 return r;
125 }
126
127 ttm_eu_backoff_reservation(&ticket, &list);
128 return 0;
129}
130
131void amdgpu_virt_init_setting(struct amdgpu_device *adev)
132{
133
134 adev->mode_info.num_crtc = 1;
135 adev->enable_virtual_display = true;
136 adev->cg_flags = 0;
137 adev->pg_flags = 0;
138}
139
140uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
141{
142 signed long r, cnt = 0;
143 unsigned long flags;
144 uint32_t seq;
145 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
146 struct amdgpu_ring *ring = &kiq->ring;
147
148 BUG_ON(!ring->funcs->emit_rreg);
149
150 spin_lock_irqsave(&kiq->ring_lock, flags);
151 amdgpu_ring_alloc(ring, 32);
152 amdgpu_ring_emit_rreg(ring, reg);
153 amdgpu_fence_emit_polling(ring, &seq);
154 amdgpu_ring_commit(ring);
155 spin_unlock_irqrestore(&kiq->ring_lock, flags);
156
157 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
158
159
160
161
162
163
164
165
166
167 if (r < 1 && (adev->in_gpu_reset || in_interrupt()))
168 goto failed_kiq_read;
169
170 if (in_interrupt())
171 might_sleep();
172
173 while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
174 msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
175 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
176 }
177
178 if (cnt > MAX_KIQ_REG_TRY)
179 goto failed_kiq_read;
180
181 return adev->wb.wb[adev->virt.reg_val_offs];
182
183failed_kiq_read:
184 pr_err("failed to read reg:%x\n", reg);
185 return ~0;
186}
187
188void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
189{
190 signed long r, cnt = 0;
191 unsigned long flags;
192 uint32_t seq;
193 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
194 struct amdgpu_ring *ring = &kiq->ring;
195
196 BUG_ON(!ring->funcs->emit_wreg);
197
198 spin_lock_irqsave(&kiq->ring_lock, flags);
199 amdgpu_ring_alloc(ring, 32);
200 amdgpu_ring_emit_wreg(ring, reg, v);
201 amdgpu_fence_emit_polling(ring, &seq);
202 amdgpu_ring_commit(ring);
203 spin_unlock_irqrestore(&kiq->ring_lock, flags);
204
205 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
206
207
208
209
210
211
212
213
214
215 if (r < 1 && (adev->in_gpu_reset || in_interrupt()))
216 goto failed_kiq_write;
217
218 if (in_interrupt())
219 might_sleep();
220
221 while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
222
223 msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
224 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
225 }
226
227 if (cnt > MAX_KIQ_REG_TRY)
228 goto failed_kiq_write;
229
230 return;
231
232failed_kiq_write:
233 pr_err("failed to write reg:%x\n", reg);
234}
235
236
237
238
239
240
241
242
243int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init)
244{
245 struct amdgpu_virt *virt = &adev->virt;
246 int r;
247
248 if (virt->ops && virt->ops->req_full_gpu) {
249 r = virt->ops->req_full_gpu(adev, init);
250 if (r)
251 return r;
252
253 adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
254 }
255
256 return 0;
257}
258
259
260
261
262
263
264
265
266int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init)
267{
268 struct amdgpu_virt *virt = &adev->virt;
269 int r;
270
271 if (virt->ops && virt->ops->rel_full_gpu) {
272 r = virt->ops->rel_full_gpu(adev, init);
273 if (r)
274 return r;
275
276 adev->virt.caps |= AMDGPU_SRIOV_CAPS_RUNTIME;
277 }
278 return 0;
279}
280
281
282
283
284
285
286
287int amdgpu_virt_reset_gpu(struct amdgpu_device *adev)
288{
289 struct amdgpu_virt *virt = &adev->virt;
290 int r;
291
292 if (virt->ops && virt->ops->reset_gpu) {
293 r = virt->ops->reset_gpu(adev);
294 if (r)
295 return r;
296
297 adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
298 }
299
300 return 0;
301}
302
303
304
305
306
307
308
309int amdgpu_virt_wait_reset(struct amdgpu_device *adev)
310{
311 struct amdgpu_virt *virt = &adev->virt;
312
313 if (!virt->ops || !virt->ops->wait_reset)
314 return -EINVAL;
315
316 return virt->ops->wait_reset(adev);
317}
318
319
320
321
322
323
324
325int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev)
326{
327 int r;
328
329 if (!amdgpu_sriov_vf(adev) || adev->virt.mm_table.gpu_addr)
330 return 0;
331
332 r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE,
333 AMDGPU_GEM_DOMAIN_VRAM,
334 &adev->virt.mm_table.bo,
335 &adev->virt.mm_table.gpu_addr,
336 (void *)&adev->virt.mm_table.cpu_addr);
337 if (r) {
338 DRM_ERROR("failed to alloc mm table and error = %d.\n", r);
339 return r;
340 }
341
342 memset((void *)adev->virt.mm_table.cpu_addr, 0, PAGE_SIZE);
343 DRM_INFO("MM table gpu addr = 0x%llx, cpu addr = %p.\n",
344 adev->virt.mm_table.gpu_addr,
345 adev->virt.mm_table.cpu_addr);
346 return 0;
347}
348
349
350
351
352
353
354void amdgpu_virt_free_mm_table(struct amdgpu_device *adev)
355{
356 if (!amdgpu_sriov_vf(adev) || !adev->virt.mm_table.gpu_addr)
357 return;
358
359 amdgpu_bo_free_kernel(&adev->virt.mm_table.bo,
360 &adev->virt.mm_table.gpu_addr,
361 (void *)&adev->virt.mm_table.cpu_addr);
362 adev->virt.mm_table.gpu_addr = 0;
363}
364
365
366int amdgpu_virt_fw_reserve_get_checksum(void *obj,
367 unsigned long obj_size,
368 unsigned int key,
369 unsigned int chksum)
370{
371 unsigned int ret = key;
372 unsigned long i = 0;
373 unsigned char *pos;
374
375 pos = (char *)obj;
376
377 for (i = 0; i < obj_size; ++i)
378 ret += *(pos + i);
379
380 pos = (char *)&chksum;
381 for (i = 0; i < sizeof(chksum); ++i)
382 ret -= *(pos + i);
383 return ret;
384}
385
386void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev)
387{
388 uint32_t pf2vf_size = 0;
389 uint32_t checksum = 0;
390 uint32_t checkval;
391 char *str;
392
393 adev->virt.fw_reserve.p_pf2vf = NULL;
394 adev->virt.fw_reserve.p_vf2pf = NULL;
395
396 if (adev->fw_vram_usage.va != NULL) {
397 adev->virt.fw_reserve.p_pf2vf =
398 (struct amdgim_pf2vf_info_header *)(
399 adev->fw_vram_usage.va + AMDGIM_DATAEXCHANGE_OFFSET);
400 AMDGPU_FW_VRAM_PF2VF_READ(adev, header.size, &pf2vf_size);
401 AMDGPU_FW_VRAM_PF2VF_READ(adev, checksum, &checksum);
402 AMDGPU_FW_VRAM_PF2VF_READ(adev, feature_flags, &adev->virt.gim_feature);
403
404
405 if (pf2vf_size > 0 && pf2vf_size < 4096) {
406 checkval = amdgpu_virt_fw_reserve_get_checksum(
407 adev->virt.fw_reserve.p_pf2vf, pf2vf_size,
408 adev->virt.fw_reserve.checksum_key, checksum);
409 if (checkval == checksum) {
410 adev->virt.fw_reserve.p_vf2pf =
411 ((void *)adev->virt.fw_reserve.p_pf2vf +
412 pf2vf_size);
413 memset((void *)adev->virt.fw_reserve.p_vf2pf, 0,
414 sizeof(amdgim_vf2pf_info));
415 AMDGPU_FW_VRAM_VF2PF_WRITE(adev, header.version,
416 AMDGPU_FW_VRAM_VF2PF_VER);
417 AMDGPU_FW_VRAM_VF2PF_WRITE(adev, header.size,
418 sizeof(amdgim_vf2pf_info));
419 AMDGPU_FW_VRAM_VF2PF_READ(adev, driver_version,
420 &str);
421#ifdef MODULE
422 if (THIS_MODULE->version != NULL)
423 strcpy(str, THIS_MODULE->version);
424 else
425#endif
426 strcpy(str, "N/A");
427 AMDGPU_FW_VRAM_VF2PF_WRITE(adev, driver_cert,
428 0);
429 AMDGPU_FW_VRAM_VF2PF_WRITE(adev, checksum,
430 amdgpu_virt_fw_reserve_get_checksum(
431 adev->virt.fw_reserve.p_vf2pf,
432 pf2vf_size,
433 adev->virt.fw_reserve.checksum_key, 0));
434 }
435 }
436 }
437}
438
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440