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/timer.h>
26 #include <engine/gr.h>
27
28 #include <nvif/if500d.h>
29 #include <nvif/unpack.h>
30
31 static inline void
nv50_vmm_pgt_pte(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map,u64 addr)32 nv50_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 next = addr + map->type, data;
36 u32 pten;
37 int log2blk;
38
39 map->type += ptes * map->ctag;
40
41 while (ptes) {
42 for (log2blk = 7; log2blk >= 0; log2blk--) {
43 pten = 1 << log2blk;
44 if (ptes >= pten && IS_ALIGNED(ptei, pten))
45 break;
46 }
47
48 data = next | (log2blk << 7);
49 next += pten * map->next;
50 ptes -= pten;
51
52 while (pten--)
53 VMM_WO064(pt, vmm, ptei++ * 8, data);
54 }
55 }
56
57 static void
nv50_vmm_pgt_sgl(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)58 nv50_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, nv50_vmm_pgt_pte);
62 }
63
64 static void
nv50_vmm_pgt_dma(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)65 nv50_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++ + 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, nv50_vmm_pgt_pte);
81 }
82
83 static void
nv50_vmm_pgt_mem(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)84 nv50_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, nv50_vmm_pgt_pte);
88 }
89
90 static void
nv50_vmm_pgt_unmap(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)91 nv50_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 static const struct nvkm_vmm_desc_func
98 nv50_vmm_pgt = {
99 .unmap = nv50_vmm_pgt_unmap,
100 .mem = nv50_vmm_pgt_mem,
101 .dma = nv50_vmm_pgt_dma,
102 .sgl = nv50_vmm_pgt_sgl,
103 };
104
105 static bool
nv50_vmm_pde(struct nvkm_vmm * vmm,struct nvkm_vmm_pt * pgt,u64 * pdata)106 nv50_vmm_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgt, u64 *pdata)
107 {
108 struct nvkm_mmu_pt *pt;
109 u64 data = 0xdeadcafe00000000ULL;
110 if (pgt && (pt = pgt->pt[0])) {
111 switch (pgt->page) {
112 case 16: data = 0x00000001; break;
113 case 12: data = 0x00000003;
114 switch (nvkm_memory_size(pt->memory)) {
115 case 0x100000: data |= 0x00000000; break;
116 case 0x040000: data |= 0x00000020; break;
117 case 0x020000: data |= 0x00000040; break;
118 case 0x010000: data |= 0x00000060; break;
119 default:
120 WARN_ON(1);
121 return false;
122 }
123 break;
124 default:
125 WARN_ON(1);
126 return false;
127 }
128
129 switch (nvkm_memory_target(pt->memory)) {
130 case NVKM_MEM_TARGET_VRAM: data |= 0x00000000; break;
131 case NVKM_MEM_TARGET_HOST: data |= 0x00000008; break;
132 case NVKM_MEM_TARGET_NCOH: data |= 0x0000000c; break;
133 default:
134 WARN_ON(1);
135 return false;
136 }
137
138 data |= pt->addr;
139 }
140 *pdata = data;
141 return true;
142 }
143
144 static void
nv50_vmm_pgd_pde(struct nvkm_vmm * vmm,struct nvkm_vmm_pt * pgd,u32 pdei)145 nv50_vmm_pgd_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei)
146 {
147 struct nvkm_vmm_join *join;
148 u32 pdeo = vmm->mmu->func->vmm.pd_offset + (pdei * 8);
149 u64 data;
150
151 if (!nv50_vmm_pde(vmm, pgd->pde[pdei], &data))
152 return;
153
154 list_for_each_entry(join, &vmm->join, head) {
155 nvkm_kmap(join->inst);
156 nvkm_wo64(join->inst, pdeo, data);
157 nvkm_done(join->inst);
158 }
159 }
160
161 static const struct nvkm_vmm_desc_func
162 nv50_vmm_pgd = {
163 .pde = nv50_vmm_pgd_pde,
164 };
165
166 const struct nvkm_vmm_desc
167 nv50_vmm_desc_12[] = {
168 { PGT, 17, 8, 0x1000, &nv50_vmm_pgt },
169 { PGD, 11, 0, 0x0000, &nv50_vmm_pgd },
170 {}
171 };
172
173 const struct nvkm_vmm_desc
174 nv50_vmm_desc_16[] = {
175 { PGT, 13, 8, 0x1000, &nv50_vmm_pgt },
176 { PGD, 11, 0, 0x0000, &nv50_vmm_pgd },
177 {}
178 };
179
180 void
nv50_vmm_flush(struct nvkm_vmm * vmm,int level)181 nv50_vmm_flush(struct nvkm_vmm *vmm, int level)
182 {
183 struct nvkm_subdev *subdev = &vmm->mmu->subdev;
184 struct nvkm_device *device = subdev->device;
185 int i, id;
186
187 mutex_lock(&vmm->mmu->mutex);
188 for (i = 0; i < NVKM_SUBDEV_NR; i++) {
189 if (!atomic_read(&vmm->engref[i]))
190 continue;
191
192 /* unfortunate hw bug workaround... */
193 if (i == NVKM_ENGINE_GR && device->gr) {
194 int ret = nvkm_gr_tlb_flush(device->gr);
195 if (ret != -ENODEV)
196 continue;
197 }
198
199 switch (i) {
200 case NVKM_ENGINE_GR : id = 0x00; break;
201 case NVKM_ENGINE_VP :
202 case NVKM_ENGINE_MSPDEC: id = 0x01; break;
203 case NVKM_SUBDEV_BAR : id = 0x06; break;
204 case NVKM_ENGINE_MSPPP :
205 case NVKM_ENGINE_MPEG : id = 0x08; break;
206 case NVKM_ENGINE_BSP :
207 case NVKM_ENGINE_MSVLD : id = 0x09; break;
208 case NVKM_ENGINE_CIPHER:
209 case NVKM_ENGINE_SEC : id = 0x0a; break;
210 case NVKM_ENGINE_CE : id = 0x0d; break;
211 default:
212 continue;
213 }
214
215 nvkm_wr32(device, 0x100c80, (id << 16) | 1);
216 if (nvkm_msec(device, 2000,
217 if (!(nvkm_rd32(device, 0x100c80) & 0x00000001))
218 break;
219 ) < 0)
220 nvkm_error(subdev, "%s mmu invalidate timeout\n", nvkm_subdev_type[i]);
221 }
222 mutex_unlock(&vmm->mmu->mutex);
223 }
224
225 int
nv50_vmm_valid(struct nvkm_vmm * vmm,void * argv,u32 argc,struct nvkm_vmm_map * map)226 nv50_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc,
227 struct nvkm_vmm_map *map)
228 {
229 const struct nvkm_vmm_page *page = map->page;
230 union {
231 struct nv50_vmm_map_vn vn;
232 struct nv50_vmm_map_v0 v0;
233 } *args = argv;
234 struct nvkm_device *device = vmm->mmu->subdev.device;
235 struct nvkm_ram *ram = device->fb->ram;
236 struct nvkm_memory *memory = map->memory;
237 u8 aper, kind, kind_inv, comp, priv, ro;
238 int kindn, ret = -ENOSYS;
239 const u8 *kindm;
240
241 map->type = map->ctag = 0;
242 map->next = 1 << page->shift;
243
244 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
245 ro = !!args->v0.ro;
246 priv = !!args->v0.priv;
247 kind = args->v0.kind & 0x7f;
248 comp = args->v0.comp & 0x03;
249 } else
250 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
251 ro = 0;
252 priv = 0;
253 kind = 0x00;
254 comp = 0;
255 } else {
256 VMM_DEBUG(vmm, "args");
257 return ret;
258 }
259
260 switch (nvkm_memory_target(memory)) {
261 case NVKM_MEM_TARGET_VRAM:
262 if (ram->stolen) {
263 map->type |= ram->stolen;
264 aper = 3;
265 } else {
266 aper = 0;
267 }
268 break;
269 case NVKM_MEM_TARGET_HOST:
270 aper = 2;
271 break;
272 case NVKM_MEM_TARGET_NCOH:
273 aper = 3;
274 break;
275 default:
276 WARN_ON(1);
277 return -EINVAL;
278 }
279
280 kindm = vmm->mmu->func->kind(vmm->mmu, &kindn, &kind_inv);
281 if (kind >= kindn || kindm[kind] == kind_inv) {
282 VMM_DEBUG(vmm, "kind %02x", kind);
283 return -EINVAL;
284 }
285
286 if (map->mem && map->mem->type != kindm[kind]) {
287 VMM_DEBUG(vmm, "kind %02x bankswz: %d %d", kind,
288 kindm[kind], map->mem->type);
289 return -EINVAL;
290 }
291
292 if (comp) {
293 u32 tags = (nvkm_memory_size(memory) >> 16) * comp;
294 if (aper != 0 || !(page->type & NVKM_VMM_PAGE_COMP)) {
295 VMM_DEBUG(vmm, "comp %d %02x", aper, page->type);
296 return -EINVAL;
297 }
298
299 if (!map->no_comp) {
300 ret = nvkm_memory_tags_get(memory, device, tags, NULL,
301 &map->tags);
302 if (ret) {
303 VMM_DEBUG(vmm, "comp %d", ret);
304 return ret;
305 }
306
307 if (map->tags->mn) {
308 u32 tags = map->tags->mn->offset +
309 (map->offset >> 16);
310 map->ctag |= (u64)comp << 49;
311 map->type |= (u64)comp << 47;
312 map->type |= (u64)tags << 49;
313 map->next |= map->ctag;
314 }
315 }
316 }
317
318 map->type |= BIT(0); /* Valid. */
319 map->type |= (u64)ro << 3;
320 map->type |= (u64)aper << 4;
321 map->type |= (u64)priv << 6;
322 map->type |= (u64)kind << 40;
323 return 0;
324 }
325
326 void
nv50_vmm_part(struct nvkm_vmm * vmm,struct nvkm_memory * inst)327 nv50_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
328 {
329 struct nvkm_vmm_join *join;
330
331 list_for_each_entry(join, &vmm->join, head) {
332 if (join->inst == inst) {
333 list_del(&join->head);
334 kfree(join);
335 break;
336 }
337 }
338 }
339
340 int
nv50_vmm_join(struct nvkm_vmm * vmm,struct nvkm_memory * inst)341 nv50_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
342 {
343 const u32 pd_offset = vmm->mmu->func->vmm.pd_offset;
344 struct nvkm_vmm_join *join;
345 int ret = 0;
346 u64 data;
347 u32 pdei;
348
349 if (!(join = kmalloc(sizeof(*join), GFP_KERNEL)))
350 return -ENOMEM;
351 join->inst = inst;
352 list_add_tail(&join->head, &vmm->join);
353
354 nvkm_kmap(join->inst);
355 for (pdei = vmm->start >> 29; pdei <= (vmm->limit - 1) >> 29; pdei++) {
356 if (!nv50_vmm_pde(vmm, vmm->pd->pde[pdei], &data)) {
357 ret = -EINVAL;
358 break;
359 }
360 nvkm_wo64(join->inst, pd_offset + (pdei * 8), data);
361 }
362 nvkm_done(join->inst);
363 return ret;
364 }
365
366 static const struct nvkm_vmm_func
367 nv50_vmm = {
368 .join = nv50_vmm_join,
369 .part = nv50_vmm_part,
370 .valid = nv50_vmm_valid,
371 .flush = nv50_vmm_flush,
372 .page_block = 1 << 29,
373 .page = {
374 { 16, &nv50_vmm_desc_16[0], NVKM_VMM_PAGE_xVxC },
375 { 12, &nv50_vmm_desc_12[0], NVKM_VMM_PAGE_xVHx },
376 {}
377 }
378 };
379
380 int
nv50_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)381 nv50_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
382 void *argv, u32 argc, struct lock_class_key *key, const char *name,
383 struct nvkm_vmm **pvmm)
384 {
385 return nv04_vmm_new_(&nv50_vmm, mmu, 0, managed, addr, size,
386 argv, argc, key, name, pvmm);
387 }
388