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 int
nouveau_vram_manager_new(struct ttm_resource_manager * man,struct ttm_buffer_object * bo,const struct ttm_place * place,struct ttm_resource ** res)46 nouveau_vram_manager_new(struct ttm_resource_manager *man,
47 struct ttm_buffer_object *bo,
48 const struct ttm_place *place,
49 struct ttm_resource **res)
50 {
51 struct nouveau_bo *nvbo = nouveau_bo(bo);
52 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
53 int ret;
54
55 if (drm->client.device.info.ram_size == 0)
56 return -ENOMEM;
57
58 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
59 if (ret)
60 return ret;
61
62 ttm_resource_init(bo, place, *res);
63
64 ret = nouveau_mem_vram(*res, nvbo->contig, nvbo->page);
65 if (ret) {
66 nouveau_mem_del(man, *res);
67 return ret;
68 }
69
70 return 0;
71 }
72
73 const struct ttm_resource_manager_func nouveau_vram_manager = {
74 .alloc = nouveau_vram_manager_new,
75 .free = nouveau_manager_del,
76 };
77
78 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)79 nouveau_gart_manager_new(struct ttm_resource_manager *man,
80 struct ttm_buffer_object *bo,
81 const struct ttm_place *place,
82 struct ttm_resource **res)
83 {
84 struct nouveau_bo *nvbo = nouveau_bo(bo);
85 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
86 int ret;
87
88 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
89 if (ret)
90 return ret;
91
92 ttm_resource_init(bo, place, *res);
93 (*res)->start = 0;
94 return 0;
95 }
96
97 const struct ttm_resource_manager_func nouveau_gart_manager = {
98 .alloc = nouveau_gart_manager_new,
99 .free = nouveau_manager_del,
100 };
101
102 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)103 nv04_gart_manager_new(struct ttm_resource_manager *man,
104 struct ttm_buffer_object *bo,
105 const struct ttm_place *place,
106 struct ttm_resource **res)
107 {
108 struct nouveau_bo *nvbo = nouveau_bo(bo);
109 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
110 struct nouveau_mem *mem;
111 int ret;
112
113 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
114 if (ret)
115 return ret;
116
117 mem = nouveau_mem(*res);
118 ttm_resource_init(bo, place, *res);
119 ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
120 (long)(*res)->num_pages << PAGE_SHIFT, &mem->vma[0]);
121 if (ret) {
122 nouveau_mem_del(man, *res);
123 return ret;
124 }
125
126 (*res)->start = mem->vma[0].addr >> PAGE_SHIFT;
127 return 0;
128 }
129
130 const struct ttm_resource_manager_func nv04_gart_manager = {
131 .alloc = nv04_gart_manager_new,
132 .free = nouveau_manager_del,
133 };
134
135 static int
nouveau_ttm_init_host(struct nouveau_drm * drm,u8 kind)136 nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
137 {
138 struct nvif_mmu *mmu = &drm->client.mmu;
139 int typei;
140
141 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
142 kind | NVIF_MEM_COHERENT);
143 if (typei < 0)
144 return -ENOSYS;
145
146 drm->ttm.type_host[!!kind] = typei;
147
148 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
149 if (typei < 0)
150 return -ENOSYS;
151
152 drm->ttm.type_ncoh[!!kind] = typei;
153 return 0;
154 }
155
156 static int
nouveau_ttm_init_vram(struct nouveau_drm * drm)157 nouveau_ttm_init_vram(struct nouveau_drm *drm)
158 {
159 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
160 struct ttm_resource_manager *man = kzalloc(sizeof(*man), GFP_KERNEL);
161
162 if (!man)
163 return -ENOMEM;
164
165 man->func = &nouveau_vram_manager;
166
167 ttm_resource_manager_init(man, &drm->ttm.bdev,
168 drm->gem.vram_available >> PAGE_SHIFT);
169 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, man);
170 ttm_resource_manager_set_used(man, true);
171 return 0;
172 } else {
173 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_VRAM, false,
174 drm->gem.vram_available >> PAGE_SHIFT);
175 }
176 }
177
178 static void
nouveau_ttm_fini_vram(struct nouveau_drm * drm)179 nouveau_ttm_fini_vram(struct nouveau_drm *drm)
180 {
181 struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM);
182
183 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
184 ttm_resource_manager_set_used(man, false);
185 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
186 ttm_resource_manager_cleanup(man);
187 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, NULL);
188 kfree(man);
189 } else
190 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_VRAM);
191 }
192
193 static int
nouveau_ttm_init_gtt(struct nouveau_drm * drm)194 nouveau_ttm_init_gtt(struct nouveau_drm *drm)
195 {
196 struct ttm_resource_manager *man;
197 unsigned long size_pages = drm->gem.gart_available >> PAGE_SHIFT;
198 const struct ttm_resource_manager_func *func = NULL;
199
200 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
201 func = &nouveau_gart_manager;
202 else if (!drm->agp.bridge)
203 func = &nv04_gart_manager;
204 else
205 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_TT, true,
206 size_pages);
207
208 man = kzalloc(sizeof(*man), GFP_KERNEL);
209 if (!man)
210 return -ENOMEM;
211
212 man->func = func;
213 man->use_tt = true;
214 ttm_resource_manager_init(man, &drm->ttm.bdev, size_pages);
215 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, man);
216 ttm_resource_manager_set_used(man, true);
217 return 0;
218 }
219
220 static void
nouveau_ttm_fini_gtt(struct nouveau_drm * drm)221 nouveau_ttm_fini_gtt(struct nouveau_drm *drm)
222 {
223 struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_TT);
224
225 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
226 drm->agp.bridge)
227 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_TT);
228 else {
229 ttm_resource_manager_set_used(man, false);
230 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
231 ttm_resource_manager_cleanup(man);
232 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, NULL);
233 kfree(man);
234 }
235 }
236
237 int
nouveau_ttm_init(struct nouveau_drm * drm)238 nouveau_ttm_init(struct nouveau_drm *drm)
239 {
240 struct nvkm_device *device = nvxx_device(&drm->client.device);
241 struct nvkm_pci *pci = device->pci;
242 struct nvif_mmu *mmu = &drm->client.mmu;
243 struct drm_device *dev = drm->dev;
244 bool need_swiotlb = false;
245 int typei, ret;
246
247 ret = nouveau_ttm_init_host(drm, 0);
248 if (ret)
249 return ret;
250
251 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
252 drm->client.device.info.chipset != 0x50) {
253 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
254 if (ret)
255 return ret;
256 }
257
258 if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
259 drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
260 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
261 NVIF_MEM_KIND |
262 NVIF_MEM_COMP |
263 NVIF_MEM_DISP);
264 if (typei < 0)
265 return -ENOSYS;
266
267 drm->ttm.type_vram = typei;
268 } else {
269 drm->ttm.type_vram = -1;
270 }
271
272 if (pci && pci->agp.bridge) {
273 drm->agp.bridge = pci->agp.bridge;
274 drm->agp.base = pci->agp.base;
275 drm->agp.size = pci->agp.size;
276 drm->agp.cma = pci->agp.cma;
277 }
278
279 #if IS_ENABLED(CONFIG_SWIOTLB) && IS_ENABLED(CONFIG_X86)
280 need_swiotlb = is_swiotlb_active(dev->dev);
281 #endif
282
283 ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev,
284 dev->anon_inode->i_mapping,
285 dev->vma_offset_manager, need_swiotlb,
286 drm->client.mmu.dmabits <= 32);
287 if (ret) {
288 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
289 return ret;
290 }
291
292 /* VRAM init */
293 drm->gem.vram_available = drm->client.device.info.ram_user;
294
295 arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
296 device->func->resource_size(device, 1));
297
298 ret = nouveau_ttm_init_vram(drm);
299 if (ret) {
300 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
301 return ret;
302 }
303
304 drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
305 device->func->resource_size(device, 1));
306
307 /* GART init */
308 if (!drm->agp.bridge) {
309 drm->gem.gart_available = drm->client.vmm.vmm.limit;
310 } else {
311 drm->gem.gart_available = drm->agp.size;
312 }
313
314 ret = nouveau_ttm_init_gtt(drm);
315 if (ret) {
316 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
317 return ret;
318 }
319
320 mutex_init(&drm->ttm.io_reserve_mutex);
321 INIT_LIST_HEAD(&drm->ttm.io_reserve_lru);
322
323 NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
324 NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
325 return 0;
326 }
327
328 void
nouveau_ttm_fini(struct nouveau_drm * drm)329 nouveau_ttm_fini(struct nouveau_drm *drm)
330 {
331 struct nvkm_device *device = nvxx_device(&drm->client.device);
332
333 nouveau_ttm_fini_vram(drm);
334 nouveau_ttm_fini_gtt(drm);
335
336 ttm_device_fini(&drm->ttm.bdev);
337
338 arch_phys_wc_del(drm->ttm.mtrr);
339 drm->ttm.mtrr = 0;
340 arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
341 device->func->resource_size(device, 1));
342
343 }
344