1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /*
3 * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA,
4 * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA,
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sub license,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
20 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
23 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include <linux/limits.h>
27 #include <linux/swiotlb.h>
28
29 #include <drm/ttm/ttm_range_manager.h>
30
31 #include "nouveau_drv.h"
32 #include "nouveau_gem.h"
33 #include "nouveau_mem.h"
34 #include "nouveau_ttm.h"
35
36 #include <core/tegra.h>
37
38 static void
nouveau_manager_del(struct ttm_resource_manager * man,struct ttm_resource * reg)39 nouveau_manager_del(struct ttm_resource_manager *man,
40 struct ttm_resource *reg)
41 {
42 nouveau_mem_del(man, reg);
43 }
44
45 static bool
nouveau_manager_intersects(struct ttm_resource_manager * man,struct ttm_resource * res,const struct ttm_place * place,size_t size)46 nouveau_manager_intersects(struct ttm_resource_manager *man,
47 struct ttm_resource *res,
48 const struct ttm_place *place,
49 size_t size)
50 {
51 return nouveau_mem_intersects(res, place, size);
52 }
53
54 static bool
nouveau_manager_compatible(struct ttm_resource_manager * man,struct ttm_resource * res,const struct ttm_place * place,size_t size)55 nouveau_manager_compatible(struct ttm_resource_manager *man,
56 struct ttm_resource *res,
57 const struct ttm_place *place,
58 size_t size)
59 {
60 return nouveau_mem_compatible(res, place, size);
61 }
62
63 static int
nouveau_vram_manager_new(struct ttm_resource_manager * man,struct ttm_buffer_object * bo,const struct ttm_place * place,struct ttm_resource ** res)64 nouveau_vram_manager_new(struct ttm_resource_manager *man,
65 struct ttm_buffer_object *bo,
66 const struct ttm_place *place,
67 struct ttm_resource **res)
68 {
69 struct nouveau_bo *nvbo = nouveau_bo(bo);
70 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
71 int ret;
72
73 if (drm->client.device.info.ram_size == 0)
74 return -ENOMEM;
75
76 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
77 if (ret)
78 return ret;
79
80 ttm_resource_init(bo, place, *res);
81
82 ret = nouveau_mem_vram(*res, nvbo->contig, nvbo->page);
83 if (ret) {
84 nouveau_mem_del(man, *res);
85 return ret;
86 }
87
88 return 0;
89 }
90
91 const struct ttm_resource_manager_func nouveau_vram_manager = {
92 .alloc = nouveau_vram_manager_new,
93 .free = nouveau_manager_del,
94 .intersects = nouveau_manager_intersects,
95 .compatible = nouveau_manager_compatible,
96 };
97
98 static int
nouveau_gart_manager_new(struct ttm_resource_manager * man,struct ttm_buffer_object * bo,const struct ttm_place * place,struct ttm_resource ** res)99 nouveau_gart_manager_new(struct ttm_resource_manager *man,
100 struct ttm_buffer_object *bo,
101 const struct ttm_place *place,
102 struct ttm_resource **res)
103 {
104 struct nouveau_bo *nvbo = nouveau_bo(bo);
105 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
106 int ret;
107
108 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
109 if (ret)
110 return ret;
111
112 ttm_resource_init(bo, place, *res);
113 (*res)->start = 0;
114 return 0;
115 }
116
117 const struct ttm_resource_manager_func nouveau_gart_manager = {
118 .alloc = nouveau_gart_manager_new,
119 .free = nouveau_manager_del,
120 .intersects = nouveau_manager_intersects,
121 .compatible = nouveau_manager_compatible,
122 };
123
124 static int
nv04_gart_manager_new(struct ttm_resource_manager * man,struct ttm_buffer_object * bo,const struct ttm_place * place,struct ttm_resource ** res)125 nv04_gart_manager_new(struct ttm_resource_manager *man,
126 struct ttm_buffer_object *bo,
127 const struct ttm_place *place,
128 struct ttm_resource **res)
129 {
130 struct nouveau_bo *nvbo = nouveau_bo(bo);
131 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
132 struct nouveau_mem *mem;
133 int ret;
134
135 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
136 if (ret)
137 return ret;
138
139 mem = nouveau_mem(*res);
140 ttm_resource_init(bo, place, *res);
141 ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
142 (long)(*res)->num_pages << PAGE_SHIFT, &mem->vma[0]);
143 if (ret) {
144 nouveau_mem_del(man, *res);
145 return ret;
146 }
147
148 (*res)->start = mem->vma[0].addr >> PAGE_SHIFT;
149 return 0;
150 }
151
152 const struct ttm_resource_manager_func nv04_gart_manager = {
153 .alloc = nv04_gart_manager_new,
154 .free = nouveau_manager_del,
155 .intersects = nouveau_manager_intersects,
156 .compatible = nouveau_manager_compatible,
157 };
158
159 static int
nouveau_ttm_init_host(struct nouveau_drm * drm,u8 kind)160 nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
161 {
162 struct nvif_mmu *mmu = &drm->client.mmu;
163 int typei;
164
165 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
166 kind | NVIF_MEM_COHERENT);
167 if (typei < 0)
168 return -ENOSYS;
169
170 drm->ttm.type_host[!!kind] = typei;
171
172 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
173 if (typei < 0)
174 return -ENOSYS;
175
176 drm->ttm.type_ncoh[!!kind] = typei;
177 return 0;
178 }
179
180 static int
nouveau_ttm_init_vram(struct nouveau_drm * drm)181 nouveau_ttm_init_vram(struct nouveau_drm *drm)
182 {
183 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
184 struct ttm_resource_manager *man = kzalloc(sizeof(*man), GFP_KERNEL);
185
186 if (!man)
187 return -ENOMEM;
188
189 man->func = &nouveau_vram_manager;
190
191 ttm_resource_manager_init(man, &drm->ttm.bdev,
192 drm->gem.vram_available >> PAGE_SHIFT);
193 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, man);
194 ttm_resource_manager_set_used(man, true);
195 return 0;
196 } else {
197 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_VRAM, false,
198 drm->gem.vram_available >> PAGE_SHIFT);
199 }
200 }
201
202 static void
nouveau_ttm_fini_vram(struct nouveau_drm * drm)203 nouveau_ttm_fini_vram(struct nouveau_drm *drm)
204 {
205 struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM);
206
207 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
208 ttm_resource_manager_set_used(man, false);
209 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
210 ttm_resource_manager_cleanup(man);
211 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, NULL);
212 kfree(man);
213 } else
214 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_VRAM);
215 }
216
217 static int
nouveau_ttm_init_gtt(struct nouveau_drm * drm)218 nouveau_ttm_init_gtt(struct nouveau_drm *drm)
219 {
220 struct ttm_resource_manager *man;
221 unsigned long size_pages = drm->gem.gart_available >> PAGE_SHIFT;
222 const struct ttm_resource_manager_func *func = NULL;
223
224 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
225 func = &nouveau_gart_manager;
226 else if (!drm->agp.bridge)
227 func = &nv04_gart_manager;
228 else
229 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_TT, true,
230 size_pages);
231
232 man = kzalloc(sizeof(*man), GFP_KERNEL);
233 if (!man)
234 return -ENOMEM;
235
236 man->func = func;
237 man->use_tt = true;
238 ttm_resource_manager_init(man, &drm->ttm.bdev, size_pages);
239 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, man);
240 ttm_resource_manager_set_used(man, true);
241 return 0;
242 }
243
244 static void
nouveau_ttm_fini_gtt(struct nouveau_drm * drm)245 nouveau_ttm_fini_gtt(struct nouveau_drm *drm)
246 {
247 struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_TT);
248
249 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
250 drm->agp.bridge)
251 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_TT);
252 else {
253 ttm_resource_manager_set_used(man, false);
254 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
255 ttm_resource_manager_cleanup(man);
256 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, NULL);
257 kfree(man);
258 }
259 }
260
261 int
nouveau_ttm_init(struct nouveau_drm * drm)262 nouveau_ttm_init(struct nouveau_drm *drm)
263 {
264 struct nvkm_device *device = nvxx_device(&drm->client.device);
265 struct nvkm_pci *pci = device->pci;
266 struct nvif_mmu *mmu = &drm->client.mmu;
267 struct drm_device *dev = drm->dev;
268 bool need_swiotlb = false;
269 int typei, ret;
270
271 ret = nouveau_ttm_init_host(drm, 0);
272 if (ret)
273 return ret;
274
275 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
276 drm->client.device.info.chipset != 0x50) {
277 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
278 if (ret)
279 return ret;
280 }
281
282 if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
283 drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
284 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
285 NVIF_MEM_KIND |
286 NVIF_MEM_COMP |
287 NVIF_MEM_DISP);
288 if (typei < 0)
289 return -ENOSYS;
290
291 drm->ttm.type_vram = typei;
292 } else {
293 drm->ttm.type_vram = -1;
294 }
295
296 if (pci && pci->agp.bridge) {
297 drm->agp.bridge = pci->agp.bridge;
298 drm->agp.base = pci->agp.base;
299 drm->agp.size = pci->agp.size;
300 drm->agp.cma = pci->agp.cma;
301 }
302
303 #if IS_ENABLED(CONFIG_SWIOTLB) && IS_ENABLED(CONFIG_X86)
304 need_swiotlb = is_swiotlb_active(dev->dev);
305 #endif
306
307 ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev,
308 dev->anon_inode->i_mapping,
309 dev->vma_offset_manager, need_swiotlb,
310 drm->client.mmu.dmabits <= 32);
311 if (ret) {
312 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
313 return ret;
314 }
315
316 /* VRAM init */
317 drm->gem.vram_available = drm->client.device.info.ram_user;
318
319 arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
320 device->func->resource_size(device, 1));
321
322 ret = nouveau_ttm_init_vram(drm);
323 if (ret) {
324 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
325 return ret;
326 }
327
328 drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
329 device->func->resource_size(device, 1));
330
331 /* GART init */
332 if (!drm->agp.bridge) {
333 drm->gem.gart_available = drm->client.vmm.vmm.limit;
334 } else {
335 drm->gem.gart_available = drm->agp.size;
336 }
337
338 ret = nouveau_ttm_init_gtt(drm);
339 if (ret) {
340 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
341 return ret;
342 }
343
344 mutex_init(&drm->ttm.io_reserve_mutex);
345 INIT_LIST_HEAD(&drm->ttm.io_reserve_lru);
346
347 NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
348 NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
349 return 0;
350 }
351
352 void
nouveau_ttm_fini(struct nouveau_drm * drm)353 nouveau_ttm_fini(struct nouveau_drm *drm)
354 {
355 struct nvkm_device *device = nvxx_device(&drm->client.device);
356
357 nouveau_ttm_fini_vram(drm);
358 nouveau_ttm_fini_gtt(drm);
359
360 ttm_device_fini(&drm->ttm.bdev);
361
362 arch_phys_wc_del(drm->ttm.mtrr);
363 drm->ttm.mtrr = 0;
364 arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
365 device->func->resource_size(device, 1));
366
367 }
368