1 /*
2 * Copyright 2017 Red Hat 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 #include "vmm.h"
23
24 #include <core/client.h>
25 #include <subdev/fb.h>
26 #include <subdev/ltc.h>
27 #include <subdev/timer.h>
28 #include <engine/gr.h>
29
30 #include <nvif/ifc00d.h>
31 #include <nvif/unpack.h>
32
33 static void
gp100_vmm_pfn_unmap(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)34 gp100_vmm_pfn_unmap(struct nvkm_vmm *vmm,
35 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
36 {
37 struct device *dev = vmm->mmu->subdev.device->dev;
38 dma_addr_t addr;
39
40 nvkm_kmap(pt->memory);
41 while (ptes--) {
42 u32 datalo = nvkm_ro32(pt->memory, pt->base + ptei * 8 + 0);
43 u32 datahi = nvkm_ro32(pt->memory, pt->base + ptei * 8 + 4);
44 u64 data = (u64)datahi << 32 | datalo;
45 if ((data & (3ULL << 1)) != 0) {
46 addr = (data >> 8) << 12;
47 dma_unmap_page(dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
48 }
49 ptei++;
50 }
51 nvkm_done(pt->memory);
52 }
53
54 static bool
gp100_vmm_pfn_clear(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)55 gp100_vmm_pfn_clear(struct nvkm_vmm *vmm,
56 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
57 {
58 bool dma = false;
59 nvkm_kmap(pt->memory);
60 while (ptes--) {
61 u32 datalo = nvkm_ro32(pt->memory, pt->base + ptei * 8 + 0);
62 u32 datahi = nvkm_ro32(pt->memory, pt->base + ptei * 8 + 4);
63 u64 data = (u64)datahi << 32 | datalo;
64 if ((data & BIT_ULL(0)) && (data & (3ULL << 1)) != 0) {
65 VMM_WO064(pt, vmm, ptei * 8, data & ~BIT_ULL(0));
66 dma = true;
67 }
68 ptei++;
69 }
70 nvkm_done(pt->memory);
71 return dma;
72 }
73
74 static void
gp100_vmm_pgt_pfn(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)75 gp100_vmm_pgt_pfn(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
76 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
77 {
78 struct device *dev = vmm->mmu->subdev.device->dev;
79 dma_addr_t addr;
80
81 nvkm_kmap(pt->memory);
82 for (; ptes; ptes--, map->pfn++) {
83 u64 data = 0;
84
85 if (!(*map->pfn & NVKM_VMM_PFN_V))
86 continue;
87
88 if (!(*map->pfn & NVKM_VMM_PFN_W))
89 data |= BIT_ULL(6); /* RO. */
90
91 if (!(*map->pfn & NVKM_VMM_PFN_A))
92 data |= BIT_ULL(7); /* Atomic disable. */
93
94 if (!(*map->pfn & NVKM_VMM_PFN_VRAM)) {
95 addr = *map->pfn >> NVKM_VMM_PFN_ADDR_SHIFT;
96 addr = dma_map_page(dev, pfn_to_page(addr), 0,
97 PAGE_SIZE, DMA_BIDIRECTIONAL);
98 if (!WARN_ON(dma_mapping_error(dev, addr))) {
99 data |= addr >> 4;
100 data |= 2ULL << 1; /* SYSTEM_COHERENT_MEMORY. */
101 data |= BIT_ULL(3); /* VOL. */
102 data |= BIT_ULL(0); /* VALID. */
103 }
104 } else {
105 data |= (*map->pfn & NVKM_VMM_PFN_ADDR) >> 4;
106 data |= BIT_ULL(0); /* VALID. */
107 }
108
109 VMM_WO064(pt, vmm, ptei++ * 8, data);
110 }
111 nvkm_done(pt->memory);
112 }
113
114 static inline void
gp100_vmm_pgt_pte(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map,u64 addr)115 gp100_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
116 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
117 {
118 u64 data = (addr >> 4) | map->type;
119
120 map->type += ptes * map->ctag;
121
122 while (ptes--) {
123 VMM_WO064(pt, vmm, ptei++ * 8, data);
124 data += map->next;
125 }
126 }
127
128 static void
gp100_vmm_pgt_sgl(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)129 gp100_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
130 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
131 {
132 VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, gp100_vmm_pgt_pte);
133 }
134
135 static void
gp100_vmm_pgt_dma(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)136 gp100_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
137 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
138 {
139 if (map->page->shift == PAGE_SHIFT) {
140 VMM_SPAM(vmm, "DMAA %08x %08x PTE(s)", ptei, ptes);
141 nvkm_kmap(pt->memory);
142 while (ptes--) {
143 const u64 data = (*map->dma++ >> 4) | map->type;
144 VMM_WO064(pt, vmm, ptei++ * 8, data);
145 map->type += map->ctag;
146 }
147 nvkm_done(pt->memory);
148 return;
149 }
150
151 VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, gp100_vmm_pgt_pte);
152 }
153
154 static void
gp100_vmm_pgt_mem(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)155 gp100_vmm_pgt_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
156 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
157 {
158 VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, gp100_vmm_pgt_pte);
159 }
160
161 static void
gp100_vmm_pgt_sparse(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)162 gp100_vmm_pgt_sparse(struct nvkm_vmm *vmm,
163 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
164 {
165 /* VALID_FALSE + VOL tells the MMU to treat the PTE as sparse. */
166 VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(3) /* VOL. */, ptes);
167 }
168
169 static const struct nvkm_vmm_desc_func
170 gp100_vmm_desc_spt = {
171 .unmap = gf100_vmm_pgt_unmap,
172 .sparse = gp100_vmm_pgt_sparse,
173 .mem = gp100_vmm_pgt_mem,
174 .dma = gp100_vmm_pgt_dma,
175 .sgl = gp100_vmm_pgt_sgl,
176 .pfn = gp100_vmm_pgt_pfn,
177 .pfn_clear = gp100_vmm_pfn_clear,
178 .pfn_unmap = gp100_vmm_pfn_unmap,
179 };
180
181 static void
gp100_vmm_lpt_invalid(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)182 gp100_vmm_lpt_invalid(struct nvkm_vmm *vmm,
183 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
184 {
185 /* VALID_FALSE + PRIV tells the MMU to ignore corresponding SPTEs. */
186 VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(5) /* PRIV. */, ptes);
187 }
188
189 static const struct nvkm_vmm_desc_func
190 gp100_vmm_desc_lpt = {
191 .invalid = gp100_vmm_lpt_invalid,
192 .unmap = gf100_vmm_pgt_unmap,
193 .sparse = gp100_vmm_pgt_sparse,
194 .mem = gp100_vmm_pgt_mem,
195 };
196
197 static inline void
gp100_vmm_pd0_pte(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map,u64 addr)198 gp100_vmm_pd0_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
199 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
200 {
201 u64 data = (addr >> 4) | map->type;
202
203 map->type += ptes * map->ctag;
204
205 while (ptes--) {
206 VMM_WO128(pt, vmm, ptei++ * 0x10, data, 0ULL);
207 data += map->next;
208 }
209 }
210
211 static void
gp100_vmm_pd0_mem(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)212 gp100_vmm_pd0_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
213 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
214 {
215 VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, gp100_vmm_pd0_pte);
216 }
217
218 static inline bool
gp100_vmm_pde(struct nvkm_mmu_pt * pt,u64 * data)219 gp100_vmm_pde(struct nvkm_mmu_pt *pt, u64 *data)
220 {
221 switch (nvkm_memory_target(pt->memory)) {
222 case NVKM_MEM_TARGET_VRAM: *data |= 1ULL << 1; break;
223 case NVKM_MEM_TARGET_HOST: *data |= 2ULL << 1;
224 *data |= BIT_ULL(3); /* VOL. */
225 break;
226 case NVKM_MEM_TARGET_NCOH: *data |= 3ULL << 1; break;
227 default:
228 WARN_ON(1);
229 return false;
230 }
231 *data |= pt->addr >> 4;
232 return true;
233 }
234
235 static void
gp100_vmm_pd0_pde(struct nvkm_vmm * vmm,struct nvkm_vmm_pt * pgd,u32 pdei)236 gp100_vmm_pd0_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei)
237 {
238 struct nvkm_vmm_pt *pgt = pgd->pde[pdei];
239 struct nvkm_mmu_pt *pd = pgd->pt[0];
240 u64 data[2] = {};
241
242 if (pgt->pt[0] && !gp100_vmm_pde(pgt->pt[0], &data[0]))
243 return;
244 if (pgt->pt[1] && !gp100_vmm_pde(pgt->pt[1], &data[1]))
245 return;
246
247 nvkm_kmap(pd->memory);
248 VMM_WO128(pd, vmm, pdei * 0x10, data[0], data[1]);
249 nvkm_done(pd->memory);
250 }
251
252 static void
gp100_vmm_pd0_sparse(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 pdei,u32 pdes)253 gp100_vmm_pd0_sparse(struct nvkm_vmm *vmm,
254 struct nvkm_mmu_pt *pt, u32 pdei, u32 pdes)
255 {
256 /* VALID_FALSE + VOL_BIG tells the MMU to treat the PDE as sparse. */
257 VMM_FO128(pt, vmm, pdei * 0x10, BIT_ULL(3) /* VOL_BIG. */, 0ULL, pdes);
258 }
259
260 static void
gp100_vmm_pd0_unmap(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 pdei,u32 pdes)261 gp100_vmm_pd0_unmap(struct nvkm_vmm *vmm,
262 struct nvkm_mmu_pt *pt, u32 pdei, u32 pdes)
263 {
264 VMM_FO128(pt, vmm, pdei * 0x10, 0ULL, 0ULL, pdes);
265 }
266
267 static void
gp100_vmm_pd0_pfn_unmap(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)268 gp100_vmm_pd0_pfn_unmap(struct nvkm_vmm *vmm,
269 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
270 {
271 struct device *dev = vmm->mmu->subdev.device->dev;
272 dma_addr_t addr;
273
274 nvkm_kmap(pt->memory);
275 while (ptes--) {
276 u32 datalo = nvkm_ro32(pt->memory, pt->base + ptei * 16 + 0);
277 u32 datahi = nvkm_ro32(pt->memory, pt->base + ptei * 16 + 4);
278 u64 data = (u64)datahi << 32 | datalo;
279
280 if ((data & (3ULL << 1)) != 0) {
281 addr = (data >> 8) << 12;
282 dma_unmap_page(dev, addr, 1UL << 21, DMA_BIDIRECTIONAL);
283 }
284 ptei++;
285 }
286 nvkm_done(pt->memory);
287 }
288
289 static bool
gp100_vmm_pd0_pfn_clear(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)290 gp100_vmm_pd0_pfn_clear(struct nvkm_vmm *vmm,
291 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
292 {
293 bool dma = false;
294
295 nvkm_kmap(pt->memory);
296 while (ptes--) {
297 u32 datalo = nvkm_ro32(pt->memory, pt->base + ptei * 16 + 0);
298 u32 datahi = nvkm_ro32(pt->memory, pt->base + ptei * 16 + 4);
299 u64 data = (u64)datahi << 32 | datalo;
300
301 if ((data & BIT_ULL(0)) && (data & (3ULL << 1)) != 0) {
302 VMM_WO064(pt, vmm, ptei * 16, data & ~BIT_ULL(0));
303 dma = true;
304 }
305 ptei++;
306 }
307 nvkm_done(pt->memory);
308 return dma;
309 }
310
311 static void
gp100_vmm_pd0_pfn(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)312 gp100_vmm_pd0_pfn(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
313 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
314 {
315 struct device *dev = vmm->mmu->subdev.device->dev;
316 dma_addr_t addr;
317
318 nvkm_kmap(pt->memory);
319 for (; ptes; ptes--, map->pfn++) {
320 u64 data = 0;
321
322 if (!(*map->pfn & NVKM_VMM_PFN_V))
323 continue;
324
325 if (!(*map->pfn & NVKM_VMM_PFN_W))
326 data |= BIT_ULL(6); /* RO. */
327
328 if (!(*map->pfn & NVKM_VMM_PFN_A))
329 data |= BIT_ULL(7); /* Atomic disable. */
330
331 if (!(*map->pfn & NVKM_VMM_PFN_VRAM)) {
332 addr = *map->pfn >> NVKM_VMM_PFN_ADDR_SHIFT;
333 addr = dma_map_page(dev, pfn_to_page(addr), 0,
334 1UL << 21, DMA_BIDIRECTIONAL);
335 if (!WARN_ON(dma_mapping_error(dev, addr))) {
336 data |= addr >> 4;
337 data |= 2ULL << 1; /* SYSTEM_COHERENT_MEMORY. */
338 data |= BIT_ULL(3); /* VOL. */
339 data |= BIT_ULL(0); /* VALID. */
340 }
341 } else {
342 data |= (*map->pfn & NVKM_VMM_PFN_ADDR) >> 4;
343 data |= BIT_ULL(0); /* VALID. */
344 }
345
346 VMM_WO064(pt, vmm, ptei++ * 16, data);
347 }
348 nvkm_done(pt->memory);
349 }
350
351 static const struct nvkm_vmm_desc_func
352 gp100_vmm_desc_pd0 = {
353 .unmap = gp100_vmm_pd0_unmap,
354 .sparse = gp100_vmm_pd0_sparse,
355 .pde = gp100_vmm_pd0_pde,
356 .mem = gp100_vmm_pd0_mem,
357 .pfn = gp100_vmm_pd0_pfn,
358 .pfn_clear = gp100_vmm_pd0_pfn_clear,
359 .pfn_unmap = gp100_vmm_pd0_pfn_unmap,
360 };
361
362 static void
gp100_vmm_pd1_pde(struct nvkm_vmm * vmm,struct nvkm_vmm_pt * pgd,u32 pdei)363 gp100_vmm_pd1_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei)
364 {
365 struct nvkm_vmm_pt *pgt = pgd->pde[pdei];
366 struct nvkm_mmu_pt *pd = pgd->pt[0];
367 u64 data = 0;
368
369 if (!gp100_vmm_pde(pgt->pt[0], &data))
370 return;
371
372 nvkm_kmap(pd->memory);
373 VMM_WO064(pd, vmm, pdei * 8, data);
374 nvkm_done(pd->memory);
375 }
376
377 static const struct nvkm_vmm_desc_func
378 gp100_vmm_desc_pd1 = {
379 .unmap = gf100_vmm_pgt_unmap,
380 .sparse = gp100_vmm_pgt_sparse,
381 .pde = gp100_vmm_pd1_pde,
382 };
383
384 const struct nvkm_vmm_desc
385 gp100_vmm_desc_16[] = {
386 { LPT, 5, 8, 0x0100, &gp100_vmm_desc_lpt },
387 { PGD, 8, 16, 0x1000, &gp100_vmm_desc_pd0 },
388 { PGD, 9, 8, 0x1000, &gp100_vmm_desc_pd1 },
389 { PGD, 9, 8, 0x1000, &gp100_vmm_desc_pd1 },
390 { PGD, 2, 8, 0x1000, &gp100_vmm_desc_pd1 },
391 {}
392 };
393
394 const struct nvkm_vmm_desc
395 gp100_vmm_desc_12[] = {
396 { SPT, 9, 8, 0x1000, &gp100_vmm_desc_spt },
397 { PGD, 8, 16, 0x1000, &gp100_vmm_desc_pd0 },
398 { PGD, 9, 8, 0x1000, &gp100_vmm_desc_pd1 },
399 { PGD, 9, 8, 0x1000, &gp100_vmm_desc_pd1 },
400 { PGD, 2, 8, 0x1000, &gp100_vmm_desc_pd1 },
401 {}
402 };
403
404 int
gp100_vmm_valid(struct nvkm_vmm * vmm,void * argv,u32 argc,struct nvkm_vmm_map * map)405 gp100_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc,
406 struct nvkm_vmm_map *map)
407 {
408 const enum nvkm_memory_target target = nvkm_memory_target(map->memory);
409 const struct nvkm_vmm_page *page = map->page;
410 union {
411 struct gp100_vmm_map_vn vn;
412 struct gp100_vmm_map_v0 v0;
413 } *args = argv;
414 struct nvkm_device *device = vmm->mmu->subdev.device;
415 struct nvkm_memory *memory = map->memory;
416 u8 kind, kind_inv, priv, ro, vol;
417 int kindn, aper, ret = -ENOSYS;
418 const u8 *kindm;
419
420 map->next = (1ULL << page->shift) >> 4;
421 map->type = 0;
422
423 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
424 vol = !!args->v0.vol;
425 ro = !!args->v0.ro;
426 priv = !!args->v0.priv;
427 kind = args->v0.kind;
428 } else
429 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
430 vol = target == NVKM_MEM_TARGET_HOST;
431 ro = 0;
432 priv = 0;
433 kind = 0x00;
434 } else {
435 VMM_DEBUG(vmm, "args");
436 return ret;
437 }
438
439 aper = vmm->func->aper(target);
440 if (WARN_ON(aper < 0))
441 return aper;
442
443 kindm = vmm->mmu->func->kind(vmm->mmu, &kindn, &kind_inv);
444 if (kind >= kindn || kindm[kind] == kind_inv) {
445 VMM_DEBUG(vmm, "kind %02x", kind);
446 return -EINVAL;
447 }
448
449 if (kindm[kind] != kind) {
450 u64 tags = nvkm_memory_size(memory) >> 16;
451 if (aper != 0 || !(page->type & NVKM_VMM_PAGE_COMP)) {
452 VMM_DEBUG(vmm, "comp %d %02x", aper, page->type);
453 return -EINVAL;
454 }
455
456 if (!map->no_comp) {
457 ret = nvkm_memory_tags_get(memory, device, tags,
458 nvkm_ltc_tags_clear,
459 &map->tags);
460 if (ret) {
461 VMM_DEBUG(vmm, "comp %d", ret);
462 return ret;
463 }
464 }
465
466 if (!map->no_comp && map->tags->mn) {
467 tags = map->tags->mn->offset + (map->offset >> 16);
468 map->ctag |= ((1ULL << page->shift) >> 16) << 36;
469 map->type |= tags << 36;
470 map->next |= map->ctag;
471 } else {
472 kind = kindm[kind];
473 }
474 }
475
476 map->type |= BIT(0);
477 map->type |= (u64)aper << 1;
478 map->type |= (u64) vol << 3;
479 map->type |= (u64)priv << 5;
480 map->type |= (u64) ro << 6;
481 map->type |= (u64)kind << 56;
482 return 0;
483 }
484
485 static int
gp100_vmm_fault_cancel(struct nvkm_vmm * vmm,void * argv,u32 argc)486 gp100_vmm_fault_cancel(struct nvkm_vmm *vmm, void *argv, u32 argc)
487 {
488 struct nvkm_device *device = vmm->mmu->subdev.device;
489 union {
490 struct gp100_vmm_fault_cancel_v0 v0;
491 } *args = argv;
492 int ret = -ENOSYS;
493 u32 aper;
494
495 if ((ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false)))
496 return ret;
497
498 /* Translate MaxwellFaultBufferA instance pointer to the same
499 * format as the NV_GR_FECS_CURRENT_CTX register.
500 */
501 aper = (args->v0.inst >> 8) & 3;
502 args->v0.inst >>= 12;
503 args->v0.inst |= aper << 28;
504 args->v0.inst |= 0x80000000;
505
506 if (!WARN_ON(nvkm_gr_ctxsw_pause(device))) {
507 if (nvkm_gr_ctxsw_inst(device) == args->v0.inst) {
508 gf100_vmm_invalidate(vmm, 0x0000001b
509 /* CANCEL_TARGETED. */ |
510 (args->v0.hub << 20) |
511 (args->v0.gpc << 15) |
512 (args->v0.client << 9));
513 }
514 WARN_ON(nvkm_gr_ctxsw_resume(device));
515 }
516
517 return 0;
518 }
519
520 static int
gp100_vmm_fault_replay(struct nvkm_vmm * vmm,void * argv,u32 argc)521 gp100_vmm_fault_replay(struct nvkm_vmm *vmm, void *argv, u32 argc)
522 {
523 union {
524 struct gp100_vmm_fault_replay_vn vn;
525 } *args = argv;
526 int ret = -ENOSYS;
527
528 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
529 gf100_vmm_invalidate(vmm, 0x0000000b); /* REPLAY_GLOBAL. */
530 }
531
532 return ret;
533 }
534
535 int
gp100_vmm_mthd(struct nvkm_vmm * vmm,struct nvkm_client * client,u32 mthd,void * argv,u32 argc)536 gp100_vmm_mthd(struct nvkm_vmm *vmm,
537 struct nvkm_client *client, u32 mthd, void *argv, u32 argc)
538 {
539 switch (mthd) {
540 case GP100_VMM_VN_FAULT_REPLAY:
541 return gp100_vmm_fault_replay(vmm, argv, argc);
542 case GP100_VMM_VN_FAULT_CANCEL:
543 return gp100_vmm_fault_cancel(vmm, argv, argc);
544 default:
545 break;
546 }
547 return -EINVAL;
548 }
549
550 void
gp100_vmm_invalidate_pdb(struct nvkm_vmm * vmm,u64 addr)551 gp100_vmm_invalidate_pdb(struct nvkm_vmm *vmm, u64 addr)
552 {
553 struct nvkm_device *device = vmm->mmu->subdev.device;
554 nvkm_wr32(device, 0x100cb8, lower_32_bits(addr));
555 nvkm_wr32(device, 0x100cec, upper_32_bits(addr));
556 }
557
558 void
gp100_vmm_flush(struct nvkm_vmm * vmm,int depth)559 gp100_vmm_flush(struct nvkm_vmm *vmm, int depth)
560 {
561 u32 type = (5 /* CACHE_LEVEL_UP_TO_PDE3 */ - depth) << 24;
562 if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))
563 type |= 0x00000004; /* HUB_ONLY */
564 type |= 0x00000001; /* PAGE_ALL */
565 gf100_vmm_invalidate(vmm, type);
566 }
567
568 int
gp100_vmm_join(struct nvkm_vmm * vmm,struct nvkm_memory * inst)569 gp100_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
570 {
571 u64 base = BIT_ULL(10) /* VER2 */ | BIT_ULL(11) /* 64KiB */;
572 if (vmm->replay) {
573 base |= BIT_ULL(4); /* FAULT_REPLAY_TEX */
574 base |= BIT_ULL(5); /* FAULT_REPLAY_GCC */
575 }
576 return gf100_vmm_join_(vmm, inst, base);
577 }
578
579 static const struct nvkm_vmm_func
580 gp100_vmm = {
581 .join = gp100_vmm_join,
582 .part = gf100_vmm_part,
583 .aper = gf100_vmm_aper,
584 .valid = gp100_vmm_valid,
585 .flush = gp100_vmm_flush,
586 .mthd = gp100_vmm_mthd,
587 .invalidate_pdb = gp100_vmm_invalidate_pdb,
588 .page = {
589 { 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
590 { 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
591 { 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
592 { 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
593 { 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
594 { 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
595 {}
596 }
597 };
598
599 int
gp100_vmm_new_(const struct nvkm_vmm_func * func,struct nvkm_mmu * mmu,bool managed,u64 addr,u64 size,void * argv,u32 argc,struct lock_class_key * key,const char * name,struct nvkm_vmm ** pvmm)600 gp100_vmm_new_(const struct nvkm_vmm_func *func,
601 struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
602 void *argv, u32 argc, struct lock_class_key *key,
603 const char *name, struct nvkm_vmm **pvmm)
604 {
605 union {
606 struct gp100_vmm_vn vn;
607 struct gp100_vmm_v0 v0;
608 } *args = argv;
609 int ret = -ENOSYS;
610 bool replay;
611
612 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
613 replay = args->v0.fault_replay != 0;
614 } else
615 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
616 replay = false;
617 } else
618 return ret;
619
620 ret = nvkm_vmm_new_(func, mmu, 0, managed, addr, size, key, name, pvmm);
621 if (ret)
622 return ret;
623
624 (*pvmm)->replay = replay;
625 return 0;
626 }
627
628 int
gp100_vmm_new(struct nvkm_mmu * mmu,bool managed,u64 addr,u64 size,void * argv,u32 argc,struct lock_class_key * key,const char * name,struct nvkm_vmm ** pvmm)629 gp100_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
630 void *argv, u32 argc, struct lock_class_key *key,
631 const char *name, struct nvkm_vmm **pvmm)
632 {
633 return gp100_vmm_new_(&gp100_vmm, mmu, managed, addr, size,
634 argv, argc, key, name, pvmm);
635 }
636