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 <subdev/fb.h>
25 #include <subdev/ltc.h>
26 #include <subdev/timer.h>
27
28 #include <nvif/if900d.h>
29 #include <nvif/unpack.h>
30
31 static inline void
gf100_vmm_pgt_pte(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map,u64 addr)32 gf100_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
33 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
34 {
35 u64 base = (addr >> 8) | map->type;
36 u64 data = base;
37
38 if (map->ctag && !(map->next & (1ULL << 44))) {
39 while (ptes--) {
40 data = base | ((map->ctag >> 1) << 44);
41 if (!(map->ctag++ & 1))
42 data |= BIT_ULL(60);
43
44 VMM_WO064(pt, vmm, ptei++ * 8, data);
45 base += map->next;
46 }
47 } else {
48 map->type += ptes * map->ctag;
49
50 while (ptes--) {
51 VMM_WO064(pt, vmm, ptei++ * 8, data);
52 data += map->next;
53 }
54 }
55 }
56
57 void
gf100_vmm_pgt_sgl(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)58 gf100_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
59 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
60 {
61 VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, gf100_vmm_pgt_pte);
62 }
63
64 void
gf100_vmm_pgt_dma(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)65 gf100_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
66 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
67 {
68 if (map->page->shift == PAGE_SHIFT) {
69 VMM_SPAM(vmm, "DMAA %08x %08x PTE(s)", ptei, ptes);
70 nvkm_kmap(pt->memory);
71 while (ptes--) {
72 const u64 data = (*map->dma++ >> 8) | map->type;
73 VMM_WO064(pt, vmm, ptei++ * 8, data);
74 map->type += map->ctag;
75 }
76 nvkm_done(pt->memory);
77 return;
78 }
79
80 VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, gf100_vmm_pgt_pte);
81 }
82
83 void
gf100_vmm_pgt_mem(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)84 gf100_vmm_pgt_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
85 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
86 {
87 VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, gf100_vmm_pgt_pte);
88 }
89
90 void
gf100_vmm_pgt_unmap(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)91 gf100_vmm_pgt_unmap(struct nvkm_vmm *vmm,
92 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
93 {
94 VMM_FO064(pt, vmm, ptei * 8, 0ULL, ptes);
95 }
96
97 const struct nvkm_vmm_desc_func
98 gf100_vmm_pgt = {
99 .unmap = gf100_vmm_pgt_unmap,
100 .mem = gf100_vmm_pgt_mem,
101 .dma = gf100_vmm_pgt_dma,
102 .sgl = gf100_vmm_pgt_sgl,
103 };
104
105 void
gf100_vmm_pgd_pde(struct nvkm_vmm * vmm,struct nvkm_vmm_pt * pgd,u32 pdei)106 gf100_vmm_pgd_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei)
107 {
108 struct nvkm_vmm_pt *pgt = pgd->pde[pdei];
109 struct nvkm_mmu_pt *pd = pgd->pt[0];
110 struct nvkm_mmu_pt *pt;
111 u64 data = 0;
112
113 if ((pt = pgt->pt[0])) {
114 switch (nvkm_memory_target(pt->memory)) {
115 case NVKM_MEM_TARGET_VRAM: data |= 1ULL << 0; break;
116 case NVKM_MEM_TARGET_HOST: data |= 2ULL << 0;
117 data |= BIT_ULL(35); /* VOL */
118 break;
119 case NVKM_MEM_TARGET_NCOH: data |= 3ULL << 0; break;
120 default:
121 WARN_ON(1);
122 return;
123 }
124 data |= pt->addr >> 8;
125 }
126
127 if ((pt = pgt->pt[1])) {
128 switch (nvkm_memory_target(pt->memory)) {
129 case NVKM_MEM_TARGET_VRAM: data |= 1ULL << 32; break;
130 case NVKM_MEM_TARGET_HOST: data |= 2ULL << 32;
131 data |= BIT_ULL(34); /* VOL */
132 break;
133 case NVKM_MEM_TARGET_NCOH: data |= 3ULL << 32; break;
134 default:
135 WARN_ON(1);
136 return;
137 }
138 data |= pt->addr << 24;
139 }
140
141 nvkm_kmap(pd->memory);
142 VMM_WO064(pd, vmm, pdei * 8, data);
143 nvkm_done(pd->memory);
144 }
145
146 const struct nvkm_vmm_desc_func
147 gf100_vmm_pgd = {
148 .unmap = gf100_vmm_pgt_unmap,
149 .pde = gf100_vmm_pgd_pde,
150 };
151
152 static const struct nvkm_vmm_desc
153 gf100_vmm_desc_17_12[] = {
154 { SPT, 15, 8, 0x1000, &gf100_vmm_pgt },
155 { PGD, 13, 8, 0x1000, &gf100_vmm_pgd },
156 {}
157 };
158
159 static const struct nvkm_vmm_desc
160 gf100_vmm_desc_17_17[] = {
161 { LPT, 10, 8, 0x1000, &gf100_vmm_pgt },
162 { PGD, 13, 8, 0x1000, &gf100_vmm_pgd },
163 {}
164 };
165
166 static const struct nvkm_vmm_desc
167 gf100_vmm_desc_16_12[] = {
168 { SPT, 14, 8, 0x1000, &gf100_vmm_pgt },
169 { PGD, 14, 8, 0x1000, &gf100_vmm_pgd },
170 {}
171 };
172
173 static const struct nvkm_vmm_desc
174 gf100_vmm_desc_16_16[] = {
175 { LPT, 10, 8, 0x1000, &gf100_vmm_pgt },
176 { PGD, 14, 8, 0x1000, &gf100_vmm_pgd },
177 {}
178 };
179
180 void
gf100_vmm_invalidate_pdb(struct nvkm_vmm * vmm,u64 addr)181 gf100_vmm_invalidate_pdb(struct nvkm_vmm *vmm, u64 addr)
182 {
183 struct nvkm_device *device = vmm->mmu->subdev.device;
184 nvkm_wr32(device, 0x100cb8, addr);
185 }
186
187 void
gf100_vmm_invalidate(struct nvkm_vmm * vmm,u32 type)188 gf100_vmm_invalidate(struct nvkm_vmm *vmm, u32 type)
189 {
190 struct nvkm_device *device = vmm->mmu->subdev.device;
191 struct nvkm_mmu_pt *pd = vmm->pd->pt[0];
192 u64 addr = 0;
193
194 mutex_lock(&vmm->mmu->mutex);
195 /* Looks like maybe a "free flush slots" counter, the
196 * faster you write to 0x100cbc to more it decreases.
197 */
198 nvkm_msec(device, 2000,
199 if (nvkm_rd32(device, 0x100c80) & 0x00ff0000)
200 break;
201 );
202
203 if (!(type & 0x00000002) /* ALL_PDB. */) {
204 switch (nvkm_memory_target(pd->memory)) {
205 case NVKM_MEM_TARGET_VRAM: addr |= 0x00000000; break;
206 case NVKM_MEM_TARGET_HOST: addr |= 0x00000002; break;
207 case NVKM_MEM_TARGET_NCOH: addr |= 0x00000003; break;
208 default:
209 WARN_ON(1);
210 break;
211 }
212 addr |= (vmm->pd->pt[0]->addr >> 12) << 4;
213
214 vmm->func->invalidate_pdb(vmm, addr);
215 }
216
217 nvkm_wr32(device, 0x100cbc, 0x80000000 | type);
218
219 /* Wait for flush to be queued? */
220 nvkm_msec(device, 2000,
221 if (nvkm_rd32(device, 0x100c80) & 0x00008000)
222 break;
223 );
224 mutex_unlock(&vmm->mmu->mutex);
225 }
226
227 void
gf100_vmm_flush(struct nvkm_vmm * vmm,int depth)228 gf100_vmm_flush(struct nvkm_vmm *vmm, int depth)
229 {
230 u32 type = 0x00000001; /* PAGE_ALL */
231 if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))
232 type |= 0x00000004; /* HUB_ONLY */
233 gf100_vmm_invalidate(vmm, type);
234 }
235
236 int
gf100_vmm_valid(struct nvkm_vmm * vmm,void * argv,u32 argc,struct nvkm_vmm_map * map)237 gf100_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc,
238 struct nvkm_vmm_map *map)
239 {
240 const enum nvkm_memory_target target = nvkm_memory_target(map->memory);
241 const struct nvkm_vmm_page *page = map->page;
242 const bool gm20x = page->desc->func->sparse != NULL;
243 union {
244 struct gf100_vmm_map_vn vn;
245 struct gf100_vmm_map_v0 v0;
246 } *args = argv;
247 struct nvkm_device *device = vmm->mmu->subdev.device;
248 struct nvkm_memory *memory = map->memory;
249 u8 kind, kind_inv, priv, ro, vol;
250 int kindn, aper, ret = -ENOSYS;
251 const u8 *kindm;
252
253 map->next = (1 << page->shift) >> 8;
254 map->type = map->ctag = 0;
255
256 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
257 vol = !!args->v0.vol;
258 ro = !!args->v0.ro;
259 priv = !!args->v0.priv;
260 kind = args->v0.kind;
261 } else
262 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
263 vol = target == NVKM_MEM_TARGET_HOST;
264 ro = 0;
265 priv = 0;
266 kind = 0x00;
267 } else {
268 VMM_DEBUG(vmm, "args");
269 return ret;
270 }
271
272 aper = vmm->func->aper(target);
273 if (WARN_ON(aper < 0))
274 return aper;
275
276 kindm = vmm->mmu->func->kind(vmm->mmu, &kindn, &kind_inv);
277 if (kind >= kindn || kindm[kind] == kind_inv) {
278 VMM_DEBUG(vmm, "kind %02x", kind);
279 return -EINVAL;
280 }
281
282 if (kindm[kind] != kind) {
283 u32 comp = (page->shift == 16 && !gm20x) ? 16 : 17;
284 u32 tags = ALIGN(nvkm_memory_size(memory), 1 << 17) >> comp;
285 if (aper != 0 || !(page->type & NVKM_VMM_PAGE_COMP)) {
286 VMM_DEBUG(vmm, "comp %d %02x", aper, page->type);
287 return -EINVAL;
288 }
289
290 ret = nvkm_memory_tags_get(memory, device, tags,
291 nvkm_ltc_tags_clear,
292 &map->tags);
293 if (ret) {
294 VMM_DEBUG(vmm, "comp %d", ret);
295 return ret;
296 }
297
298 if (map->tags->mn) {
299 u64 tags = map->tags->mn->offset + (map->offset >> 17);
300 if (page->shift == 17 || !gm20x) {
301 map->type |= tags << 44;
302 map->ctag |= 1ULL << 44;
303 map->next |= 1ULL << 44;
304 } else {
305 map->ctag |= tags << 1 | 1;
306 }
307 } else {
308 kind = kindm[kind];
309 }
310 }
311
312 map->type |= BIT(0);
313 map->type |= (u64)priv << 1;
314 map->type |= (u64) ro << 2;
315 map->type |= (u64) vol << 32;
316 map->type |= (u64)aper << 33;
317 map->type |= (u64)kind << 36;
318 return 0;
319 }
320
321 int
gf100_vmm_aper(enum nvkm_memory_target target)322 gf100_vmm_aper(enum nvkm_memory_target target)
323 {
324 switch (target) {
325 case NVKM_MEM_TARGET_VRAM: return 0;
326 case NVKM_MEM_TARGET_HOST: return 2;
327 case NVKM_MEM_TARGET_NCOH: return 3;
328 default:
329 return -EINVAL;
330 }
331 }
332
333 void
gf100_vmm_part(struct nvkm_vmm * vmm,struct nvkm_memory * inst)334 gf100_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
335 {
336 nvkm_fo64(inst, 0x0200, 0x00000000, 2);
337 }
338
339 int
gf100_vmm_join_(struct nvkm_vmm * vmm,struct nvkm_memory * inst,u64 base)340 gf100_vmm_join_(struct nvkm_vmm *vmm, struct nvkm_memory *inst, u64 base)
341 {
342 struct nvkm_mmu_pt *pd = vmm->pd->pt[0];
343
344 switch (nvkm_memory_target(pd->memory)) {
345 case NVKM_MEM_TARGET_VRAM: base |= 0ULL << 0; break;
346 case NVKM_MEM_TARGET_HOST: base |= 2ULL << 0;
347 base |= BIT_ULL(2) /* VOL. */;
348 break;
349 case NVKM_MEM_TARGET_NCOH: base |= 3ULL << 0; break;
350 default:
351 WARN_ON(1);
352 return -EINVAL;
353 }
354 base |= pd->addr;
355
356 nvkm_kmap(inst);
357 nvkm_wo64(inst, 0x0200, base);
358 nvkm_wo64(inst, 0x0208, vmm->limit - 1);
359 nvkm_done(inst);
360 return 0;
361 }
362
363 int
gf100_vmm_join(struct nvkm_vmm * vmm,struct nvkm_memory * inst)364 gf100_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
365 {
366 return gf100_vmm_join_(vmm, inst, 0);
367 }
368
369 static const struct nvkm_vmm_func
370 gf100_vmm_17 = {
371 .join = gf100_vmm_join,
372 .part = gf100_vmm_part,
373 .aper = gf100_vmm_aper,
374 .valid = gf100_vmm_valid,
375 .flush = gf100_vmm_flush,
376 .invalidate_pdb = gf100_vmm_invalidate_pdb,
377 .page = {
378 { 17, &gf100_vmm_desc_17_17[0], NVKM_VMM_PAGE_xVxC },
379 { 12, &gf100_vmm_desc_17_12[0], NVKM_VMM_PAGE_xVHx },
380 {}
381 }
382 };
383
384 static const struct nvkm_vmm_func
385 gf100_vmm_16 = {
386 .join = gf100_vmm_join,
387 .part = gf100_vmm_part,
388 .aper = gf100_vmm_aper,
389 .valid = gf100_vmm_valid,
390 .flush = gf100_vmm_flush,
391 .invalidate_pdb = gf100_vmm_invalidate_pdb,
392 .page = {
393 { 16, &gf100_vmm_desc_16_16[0], NVKM_VMM_PAGE_xVxC },
394 { 12, &gf100_vmm_desc_16_12[0], NVKM_VMM_PAGE_xVHx },
395 {}
396 }
397 };
398
399 int
gf100_vmm_new_(const struct nvkm_vmm_func * func_16,const struct nvkm_vmm_func * func_17,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)400 gf100_vmm_new_(const struct nvkm_vmm_func *func_16,
401 const struct nvkm_vmm_func *func_17,
402 struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
403 void *argv, u32 argc, struct lock_class_key *key,
404 const char *name, struct nvkm_vmm **pvmm)
405 {
406 switch (mmu->subdev.device->fb->page) {
407 case 16: return nv04_vmm_new_(func_16, mmu, 0, managed, addr, size,
408 argv, argc, key, name, pvmm);
409 case 17: return nv04_vmm_new_(func_17, mmu, 0, managed, addr, size,
410 argv, argc, key, name, pvmm);
411 default:
412 WARN_ON(1);
413 return -EINVAL;
414 }
415 }
416
417 int
gf100_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)418 gf100_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
419 void *argv, u32 argc, struct lock_class_key *key,
420 const char *name, struct nvkm_vmm **pvmm)
421 {
422 return gf100_vmm_new_(&gf100_vmm_16, &gf100_vmm_17, mmu, managed, addr,
423 size, argv, argc, key, name, pvmm);
424 }
425