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
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
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
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
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
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
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)->size, &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
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
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
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
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
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
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
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