drm/amdkfd: remove unnecessary warning message on gpu reset
[sfrench/cifs-2.6.git] / drivers / gpu / drm / amd / amdkfd / kfd_device.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 <linux/bsearch.h>
24 #include <linux/pci.h>
25 #include <linux/slab.h>
26 #include "kfd_priv.h"
27 #include "kfd_device_queue_manager.h"
28 #include "kfd_pm4_headers_vi.h"
29 #include "cwsr_trap_handler.h"
30 #include "kfd_iommu.h"
31 #include "amdgpu_amdkfd.h"
32
33 #define MQD_SIZE_ALIGNED 768
34
35 /*
36  * kfd_locked is used to lock the kfd driver during suspend or reset
37  * once locked, kfd driver will stop any further GPU execution.
38  * create process (open) will return -EAGAIN.
39  */
40 static atomic_t kfd_locked = ATOMIC_INIT(0);
41
42 #ifdef KFD_SUPPORT_IOMMU_V2
43 static const struct kfd_device_info kaveri_device_info = {
44         .asic_family = CHIP_KAVERI,
45         .max_pasid_bits = 16,
46         /* max num of queues for KV.TODO should be a dynamic value */
47         .max_no_of_hqd  = 24,
48         .doorbell_size  = 4,
49         .ih_ring_entry_size = 4 * sizeof(uint32_t),
50         .event_interrupt_class = &event_interrupt_class_cik,
51         .num_of_watch_points = 4,
52         .mqd_size_aligned = MQD_SIZE_ALIGNED,
53         .supports_cwsr = false,
54         .needs_iommu_device = true,
55         .needs_pci_atomics = false,
56         .num_sdma_engines = 2,
57         .num_xgmi_sdma_engines = 0,
58         .num_sdma_queues_per_engine = 2,
59 };
60
61 static const struct kfd_device_info carrizo_device_info = {
62         .asic_family = CHIP_CARRIZO,
63         .max_pasid_bits = 16,
64         /* max num of queues for CZ.TODO should be a dynamic value */
65         .max_no_of_hqd  = 24,
66         .doorbell_size  = 4,
67         .ih_ring_entry_size = 4 * sizeof(uint32_t),
68         .event_interrupt_class = &event_interrupt_class_cik,
69         .num_of_watch_points = 4,
70         .mqd_size_aligned = MQD_SIZE_ALIGNED,
71         .supports_cwsr = true,
72         .needs_iommu_device = true,
73         .needs_pci_atomics = false,
74         .num_sdma_engines = 2,
75         .num_xgmi_sdma_engines = 0,
76         .num_sdma_queues_per_engine = 2,
77 };
78
79 static const struct kfd_device_info raven_device_info = {
80         .asic_family = CHIP_RAVEN,
81         .max_pasid_bits = 16,
82         .max_no_of_hqd  = 24,
83         .doorbell_size  = 8,
84         .ih_ring_entry_size = 8 * sizeof(uint32_t),
85         .event_interrupt_class = &event_interrupt_class_v9,
86         .num_of_watch_points = 4,
87         .mqd_size_aligned = MQD_SIZE_ALIGNED,
88         .supports_cwsr = true,
89         .needs_iommu_device = true,
90         .needs_pci_atomics = true,
91         .num_sdma_engines = 1,
92         .num_xgmi_sdma_engines = 0,
93         .num_sdma_queues_per_engine = 2,
94 };
95 #endif
96
97 static const struct kfd_device_info hawaii_device_info = {
98         .asic_family = CHIP_HAWAII,
99         .max_pasid_bits = 16,
100         /* max num of queues for KV.TODO should be a dynamic value */
101         .max_no_of_hqd  = 24,
102         .doorbell_size  = 4,
103         .ih_ring_entry_size = 4 * sizeof(uint32_t),
104         .event_interrupt_class = &event_interrupt_class_cik,
105         .num_of_watch_points = 4,
106         .mqd_size_aligned = MQD_SIZE_ALIGNED,
107         .supports_cwsr = false,
108         .needs_iommu_device = false,
109         .needs_pci_atomics = false,
110         .num_sdma_engines = 2,
111         .num_xgmi_sdma_engines = 0,
112         .num_sdma_queues_per_engine = 2,
113 };
114
115 static const struct kfd_device_info tonga_device_info = {
116         .asic_family = CHIP_TONGA,
117         .max_pasid_bits = 16,
118         .max_no_of_hqd  = 24,
119         .doorbell_size  = 4,
120         .ih_ring_entry_size = 4 * sizeof(uint32_t),
121         .event_interrupt_class = &event_interrupt_class_cik,
122         .num_of_watch_points = 4,
123         .mqd_size_aligned = MQD_SIZE_ALIGNED,
124         .supports_cwsr = false,
125         .needs_iommu_device = false,
126         .needs_pci_atomics = true,
127         .num_sdma_engines = 2,
128         .num_xgmi_sdma_engines = 0,
129         .num_sdma_queues_per_engine = 2,
130 };
131
132 static const struct kfd_device_info fiji_device_info = {
133         .asic_family = CHIP_FIJI,
134         .max_pasid_bits = 16,
135         .max_no_of_hqd  = 24,
136         .doorbell_size  = 4,
137         .ih_ring_entry_size = 4 * sizeof(uint32_t),
138         .event_interrupt_class = &event_interrupt_class_cik,
139         .num_of_watch_points = 4,
140         .mqd_size_aligned = MQD_SIZE_ALIGNED,
141         .supports_cwsr = true,
142         .needs_iommu_device = false,
143         .needs_pci_atomics = true,
144         .num_sdma_engines = 2,
145         .num_xgmi_sdma_engines = 0,
146         .num_sdma_queues_per_engine = 2,
147 };
148
149 static const struct kfd_device_info fiji_vf_device_info = {
150         .asic_family = CHIP_FIJI,
151         .max_pasid_bits = 16,
152         .max_no_of_hqd  = 24,
153         .doorbell_size  = 4,
154         .ih_ring_entry_size = 4 * sizeof(uint32_t),
155         .event_interrupt_class = &event_interrupt_class_cik,
156         .num_of_watch_points = 4,
157         .mqd_size_aligned = MQD_SIZE_ALIGNED,
158         .supports_cwsr = true,
159         .needs_iommu_device = false,
160         .needs_pci_atomics = false,
161         .num_sdma_engines = 2,
162         .num_xgmi_sdma_engines = 0,
163         .num_sdma_queues_per_engine = 2,
164 };
165
166
167 static const struct kfd_device_info polaris10_device_info = {
168         .asic_family = CHIP_POLARIS10,
169         .max_pasid_bits = 16,
170         .max_no_of_hqd  = 24,
171         .doorbell_size  = 4,
172         .ih_ring_entry_size = 4 * sizeof(uint32_t),
173         .event_interrupt_class = &event_interrupt_class_cik,
174         .num_of_watch_points = 4,
175         .mqd_size_aligned = MQD_SIZE_ALIGNED,
176         .supports_cwsr = true,
177         .needs_iommu_device = false,
178         .needs_pci_atomics = true,
179         .num_sdma_engines = 2,
180         .num_xgmi_sdma_engines = 0,
181         .num_sdma_queues_per_engine = 2,
182 };
183
184 static const struct kfd_device_info polaris10_vf_device_info = {
185         .asic_family = CHIP_POLARIS10,
186         .max_pasid_bits = 16,
187         .max_no_of_hqd  = 24,
188         .doorbell_size  = 4,
189         .ih_ring_entry_size = 4 * sizeof(uint32_t),
190         .event_interrupt_class = &event_interrupt_class_cik,
191         .num_of_watch_points = 4,
192         .mqd_size_aligned = MQD_SIZE_ALIGNED,
193         .supports_cwsr = true,
194         .needs_iommu_device = false,
195         .needs_pci_atomics = false,
196         .num_sdma_engines = 2,
197         .num_xgmi_sdma_engines = 0,
198         .num_sdma_queues_per_engine = 2,
199 };
200
201 static const struct kfd_device_info polaris11_device_info = {
202         .asic_family = CHIP_POLARIS11,
203         .max_pasid_bits = 16,
204         .max_no_of_hqd  = 24,
205         .doorbell_size  = 4,
206         .ih_ring_entry_size = 4 * sizeof(uint32_t),
207         .event_interrupt_class = &event_interrupt_class_cik,
208         .num_of_watch_points = 4,
209         .mqd_size_aligned = MQD_SIZE_ALIGNED,
210         .supports_cwsr = true,
211         .needs_iommu_device = false,
212         .needs_pci_atomics = true,
213         .num_sdma_engines = 2,
214         .num_xgmi_sdma_engines = 0,
215         .num_sdma_queues_per_engine = 2,
216 };
217
218 static const struct kfd_device_info polaris12_device_info = {
219         .asic_family = CHIP_POLARIS12,
220         .max_pasid_bits = 16,
221         .max_no_of_hqd  = 24,
222         .doorbell_size  = 4,
223         .ih_ring_entry_size = 4 * sizeof(uint32_t),
224         .event_interrupt_class = &event_interrupt_class_cik,
225         .num_of_watch_points = 4,
226         .mqd_size_aligned = MQD_SIZE_ALIGNED,
227         .supports_cwsr = true,
228         .needs_iommu_device = false,
229         .needs_pci_atomics = true,
230         .num_sdma_engines = 2,
231         .num_xgmi_sdma_engines = 0,
232         .num_sdma_queues_per_engine = 2,
233 };
234
235 static const struct kfd_device_info vegam_device_info = {
236         .asic_family = CHIP_VEGAM,
237         .max_pasid_bits = 16,
238         .max_no_of_hqd  = 24,
239         .doorbell_size  = 4,
240         .ih_ring_entry_size = 4 * sizeof(uint32_t),
241         .event_interrupt_class = &event_interrupt_class_cik,
242         .num_of_watch_points = 4,
243         .mqd_size_aligned = MQD_SIZE_ALIGNED,
244         .supports_cwsr = true,
245         .needs_iommu_device = false,
246         .needs_pci_atomics = true,
247         .num_sdma_engines = 2,
248         .num_xgmi_sdma_engines = 0,
249         .num_sdma_queues_per_engine = 2,
250 };
251
252 static const struct kfd_device_info vega10_device_info = {
253         .asic_family = CHIP_VEGA10,
254         .max_pasid_bits = 16,
255         .max_no_of_hqd  = 24,
256         .doorbell_size  = 8,
257         .ih_ring_entry_size = 8 * sizeof(uint32_t),
258         .event_interrupt_class = &event_interrupt_class_v9,
259         .num_of_watch_points = 4,
260         .mqd_size_aligned = MQD_SIZE_ALIGNED,
261         .supports_cwsr = true,
262         .needs_iommu_device = false,
263         .needs_pci_atomics = false,
264         .num_sdma_engines = 2,
265         .num_xgmi_sdma_engines = 0,
266         .num_sdma_queues_per_engine = 2,
267 };
268
269 static const struct kfd_device_info vega10_vf_device_info = {
270         .asic_family = CHIP_VEGA10,
271         .max_pasid_bits = 16,
272         .max_no_of_hqd  = 24,
273         .doorbell_size  = 8,
274         .ih_ring_entry_size = 8 * sizeof(uint32_t),
275         .event_interrupt_class = &event_interrupt_class_v9,
276         .num_of_watch_points = 4,
277         .mqd_size_aligned = MQD_SIZE_ALIGNED,
278         .supports_cwsr = true,
279         .needs_iommu_device = false,
280         .needs_pci_atomics = false,
281         .num_sdma_engines = 2,
282         .num_xgmi_sdma_engines = 0,
283         .num_sdma_queues_per_engine = 2,
284 };
285
286 static const struct kfd_device_info vega12_device_info = {
287         .asic_family = CHIP_VEGA12,
288         .max_pasid_bits = 16,
289         .max_no_of_hqd  = 24,
290         .doorbell_size  = 8,
291         .ih_ring_entry_size = 8 * sizeof(uint32_t),
292         .event_interrupt_class = &event_interrupt_class_v9,
293         .num_of_watch_points = 4,
294         .mqd_size_aligned = MQD_SIZE_ALIGNED,
295         .supports_cwsr = true,
296         .needs_iommu_device = false,
297         .needs_pci_atomics = false,
298         .num_sdma_engines = 2,
299         .num_xgmi_sdma_engines = 0,
300         .num_sdma_queues_per_engine = 2,
301 };
302
303 static const struct kfd_device_info vega20_device_info = {
304         .asic_family = CHIP_VEGA20,
305         .max_pasid_bits = 16,
306         .max_no_of_hqd  = 24,
307         .doorbell_size  = 8,
308         .ih_ring_entry_size = 8 * sizeof(uint32_t),
309         .event_interrupt_class = &event_interrupt_class_v9,
310         .num_of_watch_points = 4,
311         .mqd_size_aligned = MQD_SIZE_ALIGNED,
312         .supports_cwsr = true,
313         .needs_iommu_device = false,
314         .needs_pci_atomics = false,
315         .num_sdma_engines = 2,
316         .num_xgmi_sdma_engines = 0,
317         .num_sdma_queues_per_engine = 8,
318 };
319
320 static const struct kfd_device_info navi10_device_info = {
321         .asic_family = CHIP_NAVI10,
322         .max_pasid_bits = 16,
323         .max_no_of_hqd  = 24,
324         .doorbell_size  = 8,
325         .ih_ring_entry_size = 8 * sizeof(uint32_t),
326         .event_interrupt_class = &event_interrupt_class_v9,
327         .num_of_watch_points = 4,
328         .mqd_size_aligned = MQD_SIZE_ALIGNED,
329         .needs_iommu_device = false,
330         .supports_cwsr = true,
331         .needs_pci_atomics = false,
332         .num_sdma_engines = 2,
333         .num_xgmi_sdma_engines = 0,
334         .num_sdma_queues_per_engine = 8,
335 };
336
337 struct kfd_deviceid {
338         unsigned short did;
339         const struct kfd_device_info *device_info;
340 };
341
342 static const struct kfd_deviceid supported_devices[] = {
343 #ifdef KFD_SUPPORT_IOMMU_V2
344         { 0x1304, &kaveri_device_info },        /* Kaveri */
345         { 0x1305, &kaveri_device_info },        /* Kaveri */
346         { 0x1306, &kaveri_device_info },        /* Kaveri */
347         { 0x1307, &kaveri_device_info },        /* Kaveri */
348         { 0x1309, &kaveri_device_info },        /* Kaveri */
349         { 0x130A, &kaveri_device_info },        /* Kaveri */
350         { 0x130B, &kaveri_device_info },        /* Kaveri */
351         { 0x130C, &kaveri_device_info },        /* Kaveri */
352         { 0x130D, &kaveri_device_info },        /* Kaveri */
353         { 0x130E, &kaveri_device_info },        /* Kaveri */
354         { 0x130F, &kaveri_device_info },        /* Kaveri */
355         { 0x1310, &kaveri_device_info },        /* Kaveri */
356         { 0x1311, &kaveri_device_info },        /* Kaveri */
357         { 0x1312, &kaveri_device_info },        /* Kaveri */
358         { 0x1313, &kaveri_device_info },        /* Kaveri */
359         { 0x1315, &kaveri_device_info },        /* Kaveri */
360         { 0x1316, &kaveri_device_info },        /* Kaveri */
361         { 0x1317, &kaveri_device_info },        /* Kaveri */
362         { 0x1318, &kaveri_device_info },        /* Kaveri */
363         { 0x131B, &kaveri_device_info },        /* Kaveri */
364         { 0x131C, &kaveri_device_info },        /* Kaveri */
365         { 0x131D, &kaveri_device_info },        /* Kaveri */
366         { 0x9870, &carrizo_device_info },       /* Carrizo */
367         { 0x9874, &carrizo_device_info },       /* Carrizo */
368         { 0x9875, &carrizo_device_info },       /* Carrizo */
369         { 0x9876, &carrizo_device_info },       /* Carrizo */
370         { 0x9877, &carrizo_device_info },       /* Carrizo */
371         { 0x15DD, &raven_device_info },         /* Raven */
372         { 0x15D8, &raven_device_info },         /* Raven */
373 #endif
374         { 0x67A0, &hawaii_device_info },        /* Hawaii */
375         { 0x67A1, &hawaii_device_info },        /* Hawaii */
376         { 0x67A2, &hawaii_device_info },        /* Hawaii */
377         { 0x67A8, &hawaii_device_info },        /* Hawaii */
378         { 0x67A9, &hawaii_device_info },        /* Hawaii */
379         { 0x67AA, &hawaii_device_info },        /* Hawaii */
380         { 0x67B0, &hawaii_device_info },        /* Hawaii */
381         { 0x67B1, &hawaii_device_info },        /* Hawaii */
382         { 0x67B8, &hawaii_device_info },        /* Hawaii */
383         { 0x67B9, &hawaii_device_info },        /* Hawaii */
384         { 0x67BA, &hawaii_device_info },        /* Hawaii */
385         { 0x67BE, &hawaii_device_info },        /* Hawaii */
386         { 0x6920, &tonga_device_info },         /* Tonga */
387         { 0x6921, &tonga_device_info },         /* Tonga */
388         { 0x6928, &tonga_device_info },         /* Tonga */
389         { 0x6929, &tonga_device_info },         /* Tonga */
390         { 0x692B, &tonga_device_info },         /* Tonga */
391         { 0x6938, &tonga_device_info },         /* Tonga */
392         { 0x6939, &tonga_device_info },         /* Tonga */
393         { 0x7300, &fiji_device_info },          /* Fiji */
394         { 0x730F, &fiji_vf_device_info },       /* Fiji vf*/
395         { 0x67C0, &polaris10_device_info },     /* Polaris10 */
396         { 0x67C1, &polaris10_device_info },     /* Polaris10 */
397         { 0x67C2, &polaris10_device_info },     /* Polaris10 */
398         { 0x67C4, &polaris10_device_info },     /* Polaris10 */
399         { 0x67C7, &polaris10_device_info },     /* Polaris10 */
400         { 0x67C8, &polaris10_device_info },     /* Polaris10 */
401         { 0x67C9, &polaris10_device_info },     /* Polaris10 */
402         { 0x67CA, &polaris10_device_info },     /* Polaris10 */
403         { 0x67CC, &polaris10_device_info },     /* Polaris10 */
404         { 0x67CF, &polaris10_device_info },     /* Polaris10 */
405         { 0x67D0, &polaris10_vf_device_info },  /* Polaris10 vf*/
406         { 0x67DF, &polaris10_device_info },     /* Polaris10 */
407         { 0x6FDF, &polaris10_device_info },     /* Polaris10 */
408         { 0x67E0, &polaris11_device_info },     /* Polaris11 */
409         { 0x67E1, &polaris11_device_info },     /* Polaris11 */
410         { 0x67E3, &polaris11_device_info },     /* Polaris11 */
411         { 0x67E7, &polaris11_device_info },     /* Polaris11 */
412         { 0x67E8, &polaris11_device_info },     /* Polaris11 */
413         { 0x67E9, &polaris11_device_info },     /* Polaris11 */
414         { 0x67EB, &polaris11_device_info },     /* Polaris11 */
415         { 0x67EF, &polaris11_device_info },     /* Polaris11 */
416         { 0x67FF, &polaris11_device_info },     /* Polaris11 */
417         { 0x6980, &polaris12_device_info },     /* Polaris12 */
418         { 0x6981, &polaris12_device_info },     /* Polaris12 */
419         { 0x6985, &polaris12_device_info },     /* Polaris12 */
420         { 0x6986, &polaris12_device_info },     /* Polaris12 */
421         { 0x6987, &polaris12_device_info },     /* Polaris12 */
422         { 0x6995, &polaris12_device_info },     /* Polaris12 */
423         { 0x6997, &polaris12_device_info },     /* Polaris12 */
424         { 0x699F, &polaris12_device_info },     /* Polaris12 */
425         { 0x694C, &vegam_device_info },         /* VegaM */
426         { 0x694E, &vegam_device_info },         /* VegaM */
427         { 0x694F, &vegam_device_info },         /* VegaM */
428         { 0x6860, &vega10_device_info },        /* Vega10 */
429         { 0x6861, &vega10_device_info },        /* Vega10 */
430         { 0x6862, &vega10_device_info },        /* Vega10 */
431         { 0x6863, &vega10_device_info },        /* Vega10 */
432         { 0x6864, &vega10_device_info },        /* Vega10 */
433         { 0x6867, &vega10_device_info },        /* Vega10 */
434         { 0x6868, &vega10_device_info },        /* Vega10 */
435         { 0x6869, &vega10_device_info },        /* Vega10 */
436         { 0x686A, &vega10_device_info },        /* Vega10 */
437         { 0x686B, &vega10_device_info },        /* Vega10 */
438         { 0x686C, &vega10_vf_device_info },     /* Vega10  vf*/
439         { 0x686D, &vega10_device_info },        /* Vega10 */
440         { 0x686E, &vega10_device_info },        /* Vega10 */
441         { 0x686F, &vega10_device_info },        /* Vega10 */
442         { 0x687F, &vega10_device_info },        /* Vega10 */
443         { 0x69A0, &vega12_device_info },        /* Vega12 */
444         { 0x69A1, &vega12_device_info },        /* Vega12 */
445         { 0x69A2, &vega12_device_info },        /* Vega12 */
446         { 0x69A3, &vega12_device_info },        /* Vega12 */
447         { 0x69AF, &vega12_device_info },        /* Vega12 */
448         { 0x66a0, &vega20_device_info },        /* Vega20 */
449         { 0x66a1, &vega20_device_info },        /* Vega20 */
450         { 0x66a2, &vega20_device_info },        /* Vega20 */
451         { 0x66a3, &vega20_device_info },        /* Vega20 */
452         { 0x66a4, &vega20_device_info },        /* Vega20 */
453         { 0x66a7, &vega20_device_info },        /* Vega20 */
454         { 0x66af, &vega20_device_info },        /* Vega20 */
455         /* Navi10 */
456         { 0x7310, &navi10_device_info },        /* Navi10 */
457         { 0x7312, &navi10_device_info },        /* Navi10 */
458         { 0x7318, &navi10_device_info },        /* Navi10 */
459         { 0x731a, &navi10_device_info },        /* Navi10 */
460         { 0x731f, &navi10_device_info },        /* Navi10 */
461 };
462
463 static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
464                                 unsigned int chunk_size);
465 static void kfd_gtt_sa_fini(struct kfd_dev *kfd);
466
467 static int kfd_resume(struct kfd_dev *kfd);
468
469 static const struct kfd_device_info *lookup_device_info(unsigned short did)
470 {
471         size_t i;
472
473         for (i = 0; i < ARRAY_SIZE(supported_devices); i++) {
474                 if (supported_devices[i].did == did) {
475                         WARN_ON(!supported_devices[i].device_info);
476                         return supported_devices[i].device_info;
477                 }
478         }
479
480         dev_warn(kfd_device, "DID %04x is missing in supported_devices\n",
481                  did);
482
483         return NULL;
484 }
485
486 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd,
487         struct pci_dev *pdev, const struct kfd2kgd_calls *f2g)
488 {
489         struct kfd_dev *kfd;
490         int ret;
491         const struct kfd_device_info *device_info =
492                                         lookup_device_info(pdev->device);
493
494         if (!device_info) {
495                 dev_err(kfd_device, "kgd2kfd_probe failed\n");
496                 return NULL;
497         }
498
499         kfd = kzalloc(sizeof(*kfd), GFP_KERNEL);
500         if (!kfd)
501                 return NULL;
502
503         /* Allow BIF to recode atomics to PCIe 3.0 AtomicOps.
504          * 32 and 64-bit requests are possible and must be
505          * supported.
506          */
507         ret = pci_enable_atomic_ops_to_root(pdev,
508                         PCI_EXP_DEVCAP2_ATOMIC_COMP32 |
509                         PCI_EXP_DEVCAP2_ATOMIC_COMP64);
510         if (device_info->needs_pci_atomics && ret < 0) {
511                 dev_info(kfd_device,
512                          "skipped device %x:%x, PCI rejects atomics\n",
513                          pdev->vendor, pdev->device);
514                 kfree(kfd);
515                 return NULL;
516         } else if (!ret)
517                 kfd->pci_atomic_requested = true;
518
519         kfd->kgd = kgd;
520         kfd->device_info = device_info;
521         kfd->pdev = pdev;
522         kfd->init_complete = false;
523         kfd->kfd2kgd = f2g;
524         atomic_set(&kfd->compute_profile, 0);
525
526         mutex_init(&kfd->doorbell_mutex);
527         memset(&kfd->doorbell_available_index, 0,
528                 sizeof(kfd->doorbell_available_index));
529
530         atomic_set(&kfd->sram_ecc_flag, 0);
531
532         return kfd;
533 }
534
535 static void kfd_cwsr_init(struct kfd_dev *kfd)
536 {
537         if (cwsr_enable && kfd->device_info->supports_cwsr) {
538                 if (kfd->device_info->asic_family < CHIP_VEGA10) {
539                         BUILD_BUG_ON(sizeof(cwsr_trap_gfx8_hex) > PAGE_SIZE);
540                         kfd->cwsr_isa = cwsr_trap_gfx8_hex;
541                         kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx8_hex);
542                 } else if (kfd->device_info->asic_family < CHIP_NAVI10) {
543                         BUILD_BUG_ON(sizeof(cwsr_trap_gfx9_hex) > PAGE_SIZE);
544                         kfd->cwsr_isa = cwsr_trap_gfx9_hex;
545                         kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx9_hex);
546                 } else {
547                         BUILD_BUG_ON(sizeof(cwsr_trap_gfx10_hex) > PAGE_SIZE);
548                         kfd->cwsr_isa = cwsr_trap_gfx10_hex;
549                         kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx10_hex);
550                 }
551
552                 kfd->cwsr_enabled = true;
553         }
554 }
555
556 bool kgd2kfd_device_init(struct kfd_dev *kfd,
557                          const struct kgd2kfd_shared_resources *gpu_resources)
558 {
559         unsigned int size;
560
561         kfd->mec_fw_version = amdgpu_amdkfd_get_fw_version(kfd->kgd,
562                         KGD_ENGINE_MEC1);
563         kfd->sdma_fw_version = amdgpu_amdkfd_get_fw_version(kfd->kgd,
564                         KGD_ENGINE_SDMA1);
565         kfd->shared_resources = *gpu_resources;
566
567         kfd->vm_info.first_vmid_kfd = ffs(gpu_resources->compute_vmid_bitmap)-1;
568         kfd->vm_info.last_vmid_kfd = fls(gpu_resources->compute_vmid_bitmap)-1;
569         kfd->vm_info.vmid_num_kfd = kfd->vm_info.last_vmid_kfd
570                         - kfd->vm_info.first_vmid_kfd + 1;
571
572         /* Verify module parameters regarding mapped process number*/
573         if ((hws_max_conc_proc < 0)
574                         || (hws_max_conc_proc > kfd->vm_info.vmid_num_kfd)) {
575                 dev_err(kfd_device,
576                         "hws_max_conc_proc %d must be between 0 and %d, use %d instead\n",
577                         hws_max_conc_proc, kfd->vm_info.vmid_num_kfd,
578                         kfd->vm_info.vmid_num_kfd);
579                 kfd->max_proc_per_quantum = kfd->vm_info.vmid_num_kfd;
580         } else
581                 kfd->max_proc_per_quantum = hws_max_conc_proc;
582
583         /* Allocate global GWS that is shared by all KFD processes */
584         if (hws_gws_support && amdgpu_amdkfd_alloc_gws(kfd->kgd,
585                         amdgpu_amdkfd_get_num_gws(kfd->kgd), &kfd->gws)) {
586                 dev_err(kfd_device, "Could not allocate %d gws\n",
587                         amdgpu_amdkfd_get_num_gws(kfd->kgd));
588                 goto out;
589         }
590         /* calculate max size of mqds needed for queues */
591         size = max_num_of_queues_per_device *
592                         kfd->device_info->mqd_size_aligned;
593
594         /*
595          * calculate max size of runlist packet.
596          * There can be only 2 packets at once
597          */
598         size += (KFD_MAX_NUM_OF_PROCESSES * sizeof(struct pm4_mes_map_process) +
599                 max_num_of_queues_per_device * sizeof(struct pm4_mes_map_queues)
600                 + sizeof(struct pm4_mes_runlist)) * 2;
601
602         /* Add size of HIQ & DIQ */
603         size += KFD_KERNEL_QUEUE_SIZE * 2;
604
605         /* add another 512KB for all other allocations on gart (HPD, fences) */
606         size += 512 * 1024;
607
608         if (amdgpu_amdkfd_alloc_gtt_mem(
609                         kfd->kgd, size, &kfd->gtt_mem,
610                         &kfd->gtt_start_gpu_addr, &kfd->gtt_start_cpu_ptr,
611                         false)) {
612                 dev_err(kfd_device, "Could not allocate %d bytes\n", size);
613                 goto alloc_gtt_mem_failure;
614         }
615
616         dev_info(kfd_device, "Allocated %d bytes on gart\n", size);
617
618         /* Initialize GTT sa with 512 byte chunk size */
619         if (kfd_gtt_sa_init(kfd, size, 512) != 0) {
620                 dev_err(kfd_device, "Error initializing gtt sub-allocator\n");
621                 goto kfd_gtt_sa_init_error;
622         }
623
624         if (kfd_doorbell_init(kfd)) {
625                 dev_err(kfd_device,
626                         "Error initializing doorbell aperture\n");
627                 goto kfd_doorbell_error;
628         }
629
630         if (kfd->kfd2kgd->get_hive_id)
631                 kfd->hive_id = kfd->kfd2kgd->get_hive_id(kfd->kgd);
632
633         if (kfd_interrupt_init(kfd)) {
634                 dev_err(kfd_device, "Error initializing interrupts\n");
635                 goto kfd_interrupt_error;
636         }
637
638         kfd->dqm = device_queue_manager_init(kfd);
639         if (!kfd->dqm) {
640                 dev_err(kfd_device, "Error initializing queue manager\n");
641                 goto device_queue_manager_error;
642         }
643
644         if (kfd_iommu_device_init(kfd)) {
645                 dev_err(kfd_device, "Error initializing iommuv2\n");
646                 goto device_iommu_error;
647         }
648
649         kfd_cwsr_init(kfd);
650
651         if (kfd_resume(kfd))
652                 goto kfd_resume_error;
653
654         kfd->dbgmgr = NULL;
655
656         if (kfd_topology_add_device(kfd)) {
657                 dev_err(kfd_device, "Error adding device to topology\n");
658                 goto kfd_topology_add_device_error;
659         }
660
661         kfd->init_complete = true;
662         dev_info(kfd_device, "added device %x:%x\n", kfd->pdev->vendor,
663                  kfd->pdev->device);
664
665         pr_debug("Starting kfd with the following scheduling policy %d\n",
666                 kfd->dqm->sched_policy);
667
668         goto out;
669
670 kfd_topology_add_device_error:
671 kfd_resume_error:
672 device_iommu_error:
673         device_queue_manager_uninit(kfd->dqm);
674 device_queue_manager_error:
675         kfd_interrupt_exit(kfd);
676 kfd_interrupt_error:
677         kfd_doorbell_fini(kfd);
678 kfd_doorbell_error:
679         kfd_gtt_sa_fini(kfd);
680 kfd_gtt_sa_init_error:
681         amdgpu_amdkfd_free_gtt_mem(kfd->kgd, kfd->gtt_mem);
682 alloc_gtt_mem_failure:
683         if (hws_gws_support)
684                 amdgpu_amdkfd_free_gws(kfd->kgd, kfd->gws);
685         dev_err(kfd_device,
686                 "device %x:%x NOT added due to errors\n",
687                 kfd->pdev->vendor, kfd->pdev->device);
688 out:
689         return kfd->init_complete;
690 }
691
692 void kgd2kfd_device_exit(struct kfd_dev *kfd)
693 {
694         if (kfd->init_complete) {
695                 kgd2kfd_suspend(kfd);
696                 device_queue_manager_uninit(kfd->dqm);
697                 kfd_interrupt_exit(kfd);
698                 kfd_topology_remove_device(kfd);
699                 kfd_doorbell_fini(kfd);
700                 kfd_gtt_sa_fini(kfd);
701                 amdgpu_amdkfd_free_gtt_mem(kfd->kgd, kfd->gtt_mem);
702                 if (hws_gws_support)
703                         amdgpu_amdkfd_free_gws(kfd->kgd, kfd->gws);
704         }
705
706         kfree(kfd);
707 }
708
709 int kgd2kfd_pre_reset(struct kfd_dev *kfd)
710 {
711         if (!kfd->init_complete)
712                 return 0;
713         kgd2kfd_suspend(kfd);
714
715         /* hold dqm->lock to prevent further execution*/
716         dqm_lock(kfd->dqm);
717
718         kfd_signal_reset_event(kfd);
719         return 0;
720 }
721
722 /*
723  * Fix me. KFD won't be able to resume existing process for now.
724  * We will keep all existing process in a evicted state and
725  * wait the process to be terminated.
726  */
727
728 int kgd2kfd_post_reset(struct kfd_dev *kfd)
729 {
730         int ret, count;
731
732         if (!kfd->init_complete)
733                 return 0;
734
735         dqm_unlock(kfd->dqm);
736
737         ret = kfd_resume(kfd);
738         if (ret)
739                 return ret;
740         count = atomic_dec_return(&kfd_locked);
741
742         atomic_set(&kfd->sram_ecc_flag, 0);
743
744         return 0;
745 }
746
747 bool kfd_is_locked(void)
748 {
749         return  (atomic_read(&kfd_locked) > 0);
750 }
751
752 void kgd2kfd_suspend(struct kfd_dev *kfd)
753 {
754         if (!kfd->init_complete)
755                 return;
756
757         /* For first KFD device suspend all the KFD processes */
758         if (atomic_inc_return(&kfd_locked) == 1)
759                 kfd_suspend_all_processes();
760
761         kfd->dqm->ops.stop(kfd->dqm);
762
763         kfd_iommu_suspend(kfd);
764 }
765
766 int kgd2kfd_resume(struct kfd_dev *kfd)
767 {
768         int ret, count;
769
770         if (!kfd->init_complete)
771                 return 0;
772
773         ret = kfd_resume(kfd);
774         if (ret)
775                 return ret;
776
777         count = atomic_dec_return(&kfd_locked);
778         WARN_ONCE(count < 0, "KFD suspend / resume ref. error");
779         if (count == 0)
780                 ret = kfd_resume_all_processes();
781
782         return ret;
783 }
784
785 static int kfd_resume(struct kfd_dev *kfd)
786 {
787         int err = 0;
788
789         err = kfd_iommu_resume(kfd);
790         if (err) {
791                 dev_err(kfd_device,
792                         "Failed to resume IOMMU for device %x:%x\n",
793                         kfd->pdev->vendor, kfd->pdev->device);
794                 return err;
795         }
796
797         err = kfd->dqm->ops.start(kfd->dqm);
798         if (err) {
799                 dev_err(kfd_device,
800                         "Error starting queue manager for device %x:%x\n",
801                         kfd->pdev->vendor, kfd->pdev->device);
802                 goto dqm_start_error;
803         }
804
805         return err;
806
807 dqm_start_error:
808         kfd_iommu_suspend(kfd);
809         return err;
810 }
811
812 /* This is called directly from KGD at ISR. */
813 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
814 {
815         uint32_t patched_ihre[KFD_MAX_RING_ENTRY_SIZE];
816         bool is_patched = false;
817         unsigned long flags;
818
819         if (!kfd->init_complete)
820                 return;
821
822         if (kfd->device_info->ih_ring_entry_size > sizeof(patched_ihre)) {
823                 dev_err_once(kfd_device, "Ring entry too small\n");
824                 return;
825         }
826
827         spin_lock_irqsave(&kfd->interrupt_lock, flags);
828
829         if (kfd->interrupts_active
830             && interrupt_is_wanted(kfd, ih_ring_entry,
831                                    patched_ihre, &is_patched)
832             && enqueue_ih_ring_entry(kfd,
833                                      is_patched ? patched_ihre : ih_ring_entry))
834                 queue_work(kfd->ih_wq, &kfd->interrupt_work);
835
836         spin_unlock_irqrestore(&kfd->interrupt_lock, flags);
837 }
838
839 int kgd2kfd_quiesce_mm(struct mm_struct *mm)
840 {
841         struct kfd_process *p;
842         int r;
843
844         /* Because we are called from arbitrary context (workqueue) as opposed
845          * to process context, kfd_process could attempt to exit while we are
846          * running so the lookup function increments the process ref count.
847          */
848         p = kfd_lookup_process_by_mm(mm);
849         if (!p)
850                 return -ESRCH;
851
852         r = kfd_process_evict_queues(p);
853
854         kfd_unref_process(p);
855         return r;
856 }
857
858 int kgd2kfd_resume_mm(struct mm_struct *mm)
859 {
860         struct kfd_process *p;
861         int r;
862
863         /* Because we are called from arbitrary context (workqueue) as opposed
864          * to process context, kfd_process could attempt to exit while we are
865          * running so the lookup function increments the process ref count.
866          */
867         p = kfd_lookup_process_by_mm(mm);
868         if (!p)
869                 return -ESRCH;
870
871         r = kfd_process_restore_queues(p);
872
873         kfd_unref_process(p);
874         return r;
875 }
876
877 /** kgd2kfd_schedule_evict_and_restore_process - Schedules work queue that will
878  *   prepare for safe eviction of KFD BOs that belong to the specified
879  *   process.
880  *
881  * @mm: mm_struct that identifies the specified KFD process
882  * @fence: eviction fence attached to KFD process BOs
883  *
884  */
885 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
886                                                struct dma_fence *fence)
887 {
888         struct kfd_process *p;
889         unsigned long active_time;
890         unsigned long delay_jiffies = msecs_to_jiffies(PROCESS_ACTIVE_TIME_MS);
891
892         if (!fence)
893                 return -EINVAL;
894
895         if (dma_fence_is_signaled(fence))
896                 return 0;
897
898         p = kfd_lookup_process_by_mm(mm);
899         if (!p)
900                 return -ENODEV;
901
902         if (fence->seqno == p->last_eviction_seqno)
903                 goto out;
904
905         p->last_eviction_seqno = fence->seqno;
906
907         /* Avoid KFD process starvation. Wait for at least
908          * PROCESS_ACTIVE_TIME_MS before evicting the process again
909          */
910         active_time = get_jiffies_64() - p->last_restore_timestamp;
911         if (delay_jiffies > active_time)
912                 delay_jiffies -= active_time;
913         else
914                 delay_jiffies = 0;
915
916         /* During process initialization eviction_work.dwork is initialized
917          * to kfd_evict_bo_worker
918          */
919         schedule_delayed_work(&p->eviction_work, delay_jiffies);
920 out:
921         kfd_unref_process(p);
922         return 0;
923 }
924
925 static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
926                                 unsigned int chunk_size)
927 {
928         unsigned int num_of_longs;
929
930         if (WARN_ON(buf_size < chunk_size))
931                 return -EINVAL;
932         if (WARN_ON(buf_size == 0))
933                 return -EINVAL;
934         if (WARN_ON(chunk_size == 0))
935                 return -EINVAL;
936
937         kfd->gtt_sa_chunk_size = chunk_size;
938         kfd->gtt_sa_num_of_chunks = buf_size / chunk_size;
939
940         num_of_longs = (kfd->gtt_sa_num_of_chunks + BITS_PER_LONG - 1) /
941                 BITS_PER_LONG;
942
943         kfd->gtt_sa_bitmap = kcalloc(num_of_longs, sizeof(long), GFP_KERNEL);
944
945         if (!kfd->gtt_sa_bitmap)
946                 return -ENOMEM;
947
948         pr_debug("gtt_sa_num_of_chunks = %d, gtt_sa_bitmap = %p\n",
949                         kfd->gtt_sa_num_of_chunks, kfd->gtt_sa_bitmap);
950
951         mutex_init(&kfd->gtt_sa_lock);
952
953         return 0;
954
955 }
956
957 static void kfd_gtt_sa_fini(struct kfd_dev *kfd)
958 {
959         mutex_destroy(&kfd->gtt_sa_lock);
960         kfree(kfd->gtt_sa_bitmap);
961 }
962
963 static inline uint64_t kfd_gtt_sa_calc_gpu_addr(uint64_t start_addr,
964                                                 unsigned int bit_num,
965                                                 unsigned int chunk_size)
966 {
967         return start_addr + bit_num * chunk_size;
968 }
969
970 static inline uint32_t *kfd_gtt_sa_calc_cpu_addr(void *start_addr,
971                                                 unsigned int bit_num,
972                                                 unsigned int chunk_size)
973 {
974         return (uint32_t *) ((uint64_t) start_addr + bit_num * chunk_size);
975 }
976
977 int kfd_gtt_sa_allocate(struct kfd_dev *kfd, unsigned int size,
978                         struct kfd_mem_obj **mem_obj)
979 {
980         unsigned int found, start_search, cur_size;
981
982         if (size == 0)
983                 return -EINVAL;
984
985         if (size > kfd->gtt_sa_num_of_chunks * kfd->gtt_sa_chunk_size)
986                 return -ENOMEM;
987
988         *mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
989         if (!(*mem_obj))
990                 return -ENOMEM;
991
992         pr_debug("Allocated mem_obj = %p for size = %d\n", *mem_obj, size);
993
994         start_search = 0;
995
996         mutex_lock(&kfd->gtt_sa_lock);
997
998 kfd_gtt_restart_search:
999         /* Find the first chunk that is free */
1000         found = find_next_zero_bit(kfd->gtt_sa_bitmap,
1001                                         kfd->gtt_sa_num_of_chunks,
1002                                         start_search);
1003
1004         pr_debug("Found = %d\n", found);
1005
1006         /* If there wasn't any free chunk, bail out */
1007         if (found == kfd->gtt_sa_num_of_chunks)
1008                 goto kfd_gtt_no_free_chunk;
1009
1010         /* Update fields of mem_obj */
1011         (*mem_obj)->range_start = found;
1012         (*mem_obj)->range_end = found;
1013         (*mem_obj)->gpu_addr = kfd_gtt_sa_calc_gpu_addr(
1014                                         kfd->gtt_start_gpu_addr,
1015                                         found,
1016                                         kfd->gtt_sa_chunk_size);
1017         (*mem_obj)->cpu_ptr = kfd_gtt_sa_calc_cpu_addr(
1018                                         kfd->gtt_start_cpu_ptr,
1019                                         found,
1020                                         kfd->gtt_sa_chunk_size);
1021
1022         pr_debug("gpu_addr = %p, cpu_addr = %p\n",
1023                         (uint64_t *) (*mem_obj)->gpu_addr, (*mem_obj)->cpu_ptr);
1024
1025         /* If we need only one chunk, mark it as allocated and get out */
1026         if (size <= kfd->gtt_sa_chunk_size) {
1027                 pr_debug("Single bit\n");
1028                 set_bit(found, kfd->gtt_sa_bitmap);
1029                 goto kfd_gtt_out;
1030         }
1031
1032         /* Otherwise, try to see if we have enough contiguous chunks */
1033         cur_size = size - kfd->gtt_sa_chunk_size;
1034         do {
1035                 (*mem_obj)->range_end =
1036                         find_next_zero_bit(kfd->gtt_sa_bitmap,
1037                                         kfd->gtt_sa_num_of_chunks, ++found);
1038                 /*
1039                  * If next free chunk is not contiguous than we need to
1040                  * restart our search from the last free chunk we found (which
1041                  * wasn't contiguous to the previous ones
1042                  */
1043                 if ((*mem_obj)->range_end != found) {
1044                         start_search = found;
1045                         goto kfd_gtt_restart_search;
1046                 }
1047
1048                 /*
1049                  * If we reached end of buffer, bail out with error
1050                  */
1051                 if (found == kfd->gtt_sa_num_of_chunks)
1052                         goto kfd_gtt_no_free_chunk;
1053
1054                 /* Check if we don't need another chunk */
1055                 if (cur_size <= kfd->gtt_sa_chunk_size)
1056                         cur_size = 0;
1057                 else
1058                         cur_size -= kfd->gtt_sa_chunk_size;
1059
1060         } while (cur_size > 0);
1061
1062         pr_debug("range_start = %d, range_end = %d\n",
1063                 (*mem_obj)->range_start, (*mem_obj)->range_end);
1064
1065         /* Mark the chunks as allocated */
1066         for (found = (*mem_obj)->range_start;
1067                 found <= (*mem_obj)->range_end;
1068                 found++)
1069                 set_bit(found, kfd->gtt_sa_bitmap);
1070
1071 kfd_gtt_out:
1072         mutex_unlock(&kfd->gtt_sa_lock);
1073         return 0;
1074
1075 kfd_gtt_no_free_chunk:
1076         pr_debug("Allocation failed with mem_obj = %p\n", mem_obj);
1077         mutex_unlock(&kfd->gtt_sa_lock);
1078         kfree(mem_obj);
1079         return -ENOMEM;
1080 }
1081
1082 int kfd_gtt_sa_free(struct kfd_dev *kfd, struct kfd_mem_obj *mem_obj)
1083 {
1084         unsigned int bit;
1085
1086         /* Act like kfree when trying to free a NULL object */
1087         if (!mem_obj)
1088                 return 0;
1089
1090         pr_debug("Free mem_obj = %p, range_start = %d, range_end = %d\n",
1091                         mem_obj, mem_obj->range_start, mem_obj->range_end);
1092
1093         mutex_lock(&kfd->gtt_sa_lock);
1094
1095         /* Mark the chunks as free */
1096         for (bit = mem_obj->range_start;
1097                 bit <= mem_obj->range_end;
1098                 bit++)
1099                 clear_bit(bit, kfd->gtt_sa_bitmap);
1100
1101         mutex_unlock(&kfd->gtt_sa_lock);
1102
1103         kfree(mem_obj);
1104         return 0;
1105 }
1106
1107 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd)
1108 {
1109         if (kfd)
1110                 atomic_inc(&kfd->sram_ecc_flag);
1111 }
1112
1113 void kfd_inc_compute_active(struct kfd_dev *kfd)
1114 {
1115         if (atomic_inc_return(&kfd->compute_profile) == 1)
1116                 amdgpu_amdkfd_set_compute_idle(kfd->kgd, false);
1117 }
1118
1119 void kfd_dec_compute_active(struct kfd_dev *kfd)
1120 {
1121         int count = atomic_dec_return(&kfd->compute_profile);
1122
1123         if (count == 0)
1124                 amdgpu_amdkfd_set_compute_idle(kfd->kgd, true);
1125         WARN_ONCE(count < 0, "Compute profile ref. count error");
1126 }
1127
1128 #if defined(CONFIG_DEBUG_FS)
1129
1130 /* This function will send a package to HIQ to hang the HWS
1131  * which will trigger a GPU reset and bring the HWS back to normal state
1132  */
1133 int kfd_debugfs_hang_hws(struct kfd_dev *dev)
1134 {
1135         int r = 0;
1136
1137         if (dev->dqm->sched_policy != KFD_SCHED_POLICY_HWS) {
1138                 pr_err("HWS is not enabled");
1139                 return -EINVAL;
1140         }
1141
1142         r = pm_debugfs_hang_hws(&dev->dqm->packets);
1143         if (!r)
1144                 r = dqm_debugfs_execute_queues(dev->dqm);
1145
1146         return r;
1147 }
1148
1149 #endif