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
27 #include <nvif/ifc00d.h>
28 #include <nvif/unpack.h>
29
30 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)31 gp100_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
32 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
33 {
34 u64 data = (addr >> 4) | map->type;
35
36 map->type += ptes * map->ctag;
37
38 while (ptes--) {
39 VMM_WO064(pt, vmm, ptei++ * 8, data);
40 data += map->next;
41 }
42 }
43
44 static void
gp100_vmm_pgt_sgl(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)45 gp100_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
46 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
47 {
48 VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, gp100_vmm_pgt_pte);
49 }
50
51 static void
gp100_vmm_pgt_dma(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)52 gp100_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
53 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
54 {
55 if (map->page->shift == PAGE_SHIFT) {
56 VMM_SPAM(vmm, "DMAA %08x %08x PTE(s)", ptei, ptes);
57 nvkm_kmap(pt->memory);
58 while (ptes--) {
59 const u64 data = (*map->dma++ >> 4) | map->type;
60 VMM_WO064(pt, vmm, ptei++ * 8, data);
61 map->type += map->ctag;
62 }
63 nvkm_done(pt->memory);
64 return;
65 }
66
67 VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, gp100_vmm_pgt_pte);
68 }
69
70 static void
gp100_vmm_pgt_mem(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)71 gp100_vmm_pgt_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
72 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
73 {
74 VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, gp100_vmm_pgt_pte);
75 }
76
77 static void
gp100_vmm_pgt_sparse(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)78 gp100_vmm_pgt_sparse(struct nvkm_vmm *vmm,
79 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
80 {
81 /* VALID_FALSE + VOL tells the MMU to treat the PTE as sparse. */
82 VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(3) /* VOL. */, ptes);
83 }
84
85 static const struct nvkm_vmm_desc_func
86 gp100_vmm_desc_spt = {
87 .unmap = gf100_vmm_pgt_unmap,
88 .sparse = gp100_vmm_pgt_sparse,
89 .mem = gp100_vmm_pgt_mem,
90 .dma = gp100_vmm_pgt_dma,
91 .sgl = gp100_vmm_pgt_sgl,
92 };
93
94 static void
gp100_vmm_lpt_invalid(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)95 gp100_vmm_lpt_invalid(struct nvkm_vmm *vmm,
96 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
97 {
98 /* VALID_FALSE + PRIV tells the MMU to ignore corresponding SPTEs. */
99 VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(5) /* PRIV. */, ptes);
100 }
101
102 static const struct nvkm_vmm_desc_func
103 gp100_vmm_desc_lpt = {
104 .invalid = gp100_vmm_lpt_invalid,
105 .unmap = gf100_vmm_pgt_unmap,
106 .sparse = gp100_vmm_pgt_sparse,
107 .mem = gp100_vmm_pgt_mem,
108 };
109
110 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)111 gp100_vmm_pd0_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
112 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
113 {
114 u64 data = (addr >> 4) | map->type;
115
116 map->type += ptes * map->ctag;
117
118 while (ptes--) {
119 VMM_WO128(pt, vmm, ptei++ * 0x10, data, 0ULL);
120 data += map->next;
121 }
122 }
123
124 static void
gp100_vmm_pd0_mem(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes,struct nvkm_vmm_map * map)125 gp100_vmm_pd0_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
126 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
127 {
128 VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, gp100_vmm_pd0_pte);
129 }
130
131 static inline bool
gp100_vmm_pde(struct nvkm_mmu_pt * pt,u64 * data)132 gp100_vmm_pde(struct nvkm_mmu_pt *pt, u64 *data)
133 {
134 switch (nvkm_memory_target(pt->memory)) {
135 case NVKM_MEM_TARGET_VRAM: *data |= 1ULL << 1; break;
136 case NVKM_MEM_TARGET_HOST: *data |= 2ULL << 1;
137 *data |= BIT_ULL(3); /* VOL. */
138 break;
139 case NVKM_MEM_TARGET_NCOH: *data |= 3ULL << 1; break;
140 default:
141 WARN_ON(1);
142 return false;
143 }
144 *data |= pt->addr >> 4;
145 return true;
146 }
147
148 static void
gp100_vmm_pd0_pde(struct nvkm_vmm * vmm,struct nvkm_vmm_pt * pgd,u32 pdei)149 gp100_vmm_pd0_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei)
150 {
151 struct nvkm_vmm_pt *pgt = pgd->pde[pdei];
152 struct nvkm_mmu_pt *pd = pgd->pt[0];
153 u64 data[2] = {};
154
155 if (pgt->pt[0] && !gp100_vmm_pde(pgt->pt[0], &data[0]))
156 return;
157 if (pgt->pt[1] && !gp100_vmm_pde(pgt->pt[1], &data[1]))
158 return;
159
160 nvkm_kmap(pd->memory);
161 VMM_WO128(pd, vmm, pdei * 0x10, data[0], data[1]);
162 nvkm_done(pd->memory);
163 }
164
165 static void
gp100_vmm_pd0_sparse(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 pdei,u32 pdes)166 gp100_vmm_pd0_sparse(struct nvkm_vmm *vmm,
167 struct nvkm_mmu_pt *pt, u32 pdei, u32 pdes)
168 {
169 /* VALID_FALSE + VOL_BIG tells the MMU to treat the PDE as sparse. */
170 VMM_FO128(pt, vmm, pdei * 0x10, BIT_ULL(3) /* VOL_BIG. */, 0ULL, pdes);
171 }
172
173 static void
gp100_vmm_pd0_unmap(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 pdei,u32 pdes)174 gp100_vmm_pd0_unmap(struct nvkm_vmm *vmm,
175 struct nvkm_mmu_pt *pt, u32 pdei, u32 pdes)
176 {
177 VMM_FO128(pt, vmm, pdei * 0x10, 0ULL, 0ULL, pdes);
178 }
179
180 static const struct nvkm_vmm_desc_func
181 gp100_vmm_desc_pd0 = {
182 .unmap = gp100_vmm_pd0_unmap,
183 .sparse = gp100_vmm_pd0_sparse,
184 .pde = gp100_vmm_pd0_pde,
185 .mem = gp100_vmm_pd0_mem,
186 };
187
188 static void
gp100_vmm_pd1_pde(struct nvkm_vmm * vmm,struct nvkm_vmm_pt * pgd,u32 pdei)189 gp100_vmm_pd1_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei)
190 {
191 struct nvkm_vmm_pt *pgt = pgd->pde[pdei];
192 struct nvkm_mmu_pt *pd = pgd->pt[0];
193 u64 data = 0;
194
195 if (!gp100_vmm_pde(pgt->pt[0], &data))
196 return;
197
198 nvkm_kmap(pd->memory);
199 VMM_WO064(pd, vmm, pdei * 8, data);
200 nvkm_done(pd->memory);
201 }
202
203 static const struct nvkm_vmm_desc_func
204 gp100_vmm_desc_pd1 = {
205 .unmap = gf100_vmm_pgt_unmap,
206 .sparse = gp100_vmm_pgt_sparse,
207 .pde = gp100_vmm_pd1_pde,
208 };
209
210 const struct nvkm_vmm_desc
211 gp100_vmm_desc_16[] = {
212 { LPT, 5, 8, 0x0100, &gp100_vmm_desc_lpt },
213 { PGD, 8, 16, 0x1000, &gp100_vmm_desc_pd0 },
214 { PGD, 9, 8, 0x1000, &gp100_vmm_desc_pd1 },
215 { PGD, 9, 8, 0x1000, &gp100_vmm_desc_pd1 },
216 { PGD, 2, 8, 0x1000, &gp100_vmm_desc_pd1 },
217 {}
218 };
219
220 const struct nvkm_vmm_desc
221 gp100_vmm_desc_12[] = {
222 { SPT, 9, 8, 0x1000, &gp100_vmm_desc_spt },
223 { PGD, 8, 16, 0x1000, &gp100_vmm_desc_pd0 },
224 { PGD, 9, 8, 0x1000, &gp100_vmm_desc_pd1 },
225 { PGD, 9, 8, 0x1000, &gp100_vmm_desc_pd1 },
226 { PGD, 2, 8, 0x1000, &gp100_vmm_desc_pd1 },
227 {}
228 };
229
230 int
gp100_vmm_valid(struct nvkm_vmm * vmm,void * argv,u32 argc,struct nvkm_vmm_map * map)231 gp100_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc,
232 struct nvkm_vmm_map *map)
233 {
234 const enum nvkm_memory_target target = nvkm_memory_target(map->memory);
235 const struct nvkm_vmm_page *page = map->page;
236 union {
237 struct gp100_vmm_map_vn vn;
238 struct gp100_vmm_map_v0 v0;
239 } *args = argv;
240 struct nvkm_device *device = vmm->mmu->subdev.device;
241 struct nvkm_memory *memory = map->memory;
242 u8 kind, priv, ro, vol;
243 int kindn, aper, ret = -ENOSYS;
244 const u8 *kindm;
245
246 map->next = (1ULL << page->shift) >> 4;
247 map->type = 0;
248
249 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
250 vol = !!args->v0.vol;
251 ro = !!args->v0.ro;
252 priv = !!args->v0.priv;
253 kind = args->v0.kind;
254 } else
255 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
256 vol = target == NVKM_MEM_TARGET_HOST;
257 ro = 0;
258 priv = 0;
259 kind = 0x00;
260 } else {
261 VMM_DEBUG(vmm, "args");
262 return ret;
263 }
264
265 aper = vmm->func->aper(target);
266 if (WARN_ON(aper < 0))
267 return aper;
268
269 kindm = vmm->mmu->func->kind(vmm->mmu, &kindn);
270 if (kind >= kindn || kindm[kind] == 0xff) {
271 VMM_DEBUG(vmm, "kind %02x", kind);
272 return -EINVAL;
273 }
274
275 if (kindm[kind] != kind) {
276 u64 tags = nvkm_memory_size(memory) >> 16;
277 if (aper != 0 || !(page->type & NVKM_VMM_PAGE_COMP)) {
278 VMM_DEBUG(vmm, "comp %d %02x", aper, page->type);
279 return -EINVAL;
280 }
281
282 ret = nvkm_memory_tags_get(memory, device, tags,
283 nvkm_ltc_tags_clear,
284 &map->tags);
285 if (ret) {
286 VMM_DEBUG(vmm, "comp %d", ret);
287 return ret;
288 }
289
290 if (map->tags->mn) {
291 tags = map->tags->mn->offset + (map->offset >> 16);
292 map->ctag |= ((1ULL << page->shift) >> 16) << 36;
293 map->type |= tags << 36;
294 map->next |= map->ctag;
295 } else {
296 kind = kindm[kind];
297 }
298 }
299
300 map->type |= BIT(0);
301 map->type |= (u64)aper << 1;
302 map->type |= (u64) vol << 3;
303 map->type |= (u64)priv << 5;
304 map->type |= (u64) ro << 6;
305 map->type |= (u64)kind << 56;
306 return 0;
307 }
308
309 void
gp100_vmm_flush(struct nvkm_vmm * vmm,int depth)310 gp100_vmm_flush(struct nvkm_vmm *vmm, int depth)
311 {
312 gf100_vmm_flush_(vmm, 5 /* CACHE_LEVEL_UP_TO_PDE3 */ - depth);
313 }
314
315 int
gp100_vmm_join(struct nvkm_vmm * vmm,struct nvkm_memory * inst)316 gp100_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
317 {
318 const u64 base = BIT_ULL(10) /* VER2 */ | BIT_ULL(11); /* 64KiB */
319 return gf100_vmm_join_(vmm, inst, base);
320 }
321
322 static const struct nvkm_vmm_func
323 gp100_vmm = {
324 .join = gp100_vmm_join,
325 .part = gf100_vmm_part,
326 .aper = gf100_vmm_aper,
327 .valid = gp100_vmm_valid,
328 .flush = gp100_vmm_flush,
329 .page = {
330 { 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
331 { 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
332 { 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
333 { 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
334 { 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
335 { 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
336 {}
337 }
338 };
339
340 int
gp100_vmm_new(struct nvkm_mmu * mmu,u64 addr,u64 size,void * argv,u32 argc,struct lock_class_key * key,const char * name,struct nvkm_vmm ** pvmm)341 gp100_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
342 struct lock_class_key *key, const char *name,
343 struct nvkm_vmm **pvmm)
344 {
345 return nv04_vmm_new_(&gp100_vmm, mmu, 0, addr, size,
346 argv, argc, key, name, pvmm);
347 }
348
