1 /* $NetBSD: nouveau_ttm.c,v 1.10 2022/05/21 17:50:21 riastradh Exp $ */
2
3 // SPDX-License-Identifier: GPL-2.0 OR MIT
4 /*
5 * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA,
6 * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA,
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sub license,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
25 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 */
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: nouveau_ttm.c,v 1.10 2022/05/21 17:50:21 riastradh Exp $");
29
30 #include <sys/param.h>
31 #include <uvm/uvm_extern.h> /* pmap_pv_track/untrack */
32
33 #include "nouveau_drv.h"
34 #include "nouveau_gem.h"
35 #include "nouveau_mem.h"
36 #include "nouveau_ttm.h"
37
38 #include <drm/drm_legacy.h>
39
40 #include <core/tegra.h>
41
42 static int
nouveau_manager_init(struct ttm_mem_type_manager * man,unsigned long psize)43 nouveau_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
44 {
45 return 0;
46 }
47
48 static int
nouveau_manager_fini(struct ttm_mem_type_manager * man)49 nouveau_manager_fini(struct ttm_mem_type_manager *man)
50 {
51 return 0;
52 }
53
54 static void
nouveau_manager_del(struct ttm_mem_type_manager * man,struct ttm_mem_reg * reg)55 nouveau_manager_del(struct ttm_mem_type_manager *man, struct ttm_mem_reg *reg)
56 {
57 nouveau_mem_del(reg);
58 }
59
60 static void
nouveau_manager_debug(struct ttm_mem_type_manager * man,struct drm_printer * printer)61 nouveau_manager_debug(struct ttm_mem_type_manager *man,
62 struct drm_printer *printer)
63 {
64 }
65
66 static int
nouveau_vram_manager_new(struct ttm_mem_type_manager * man,struct ttm_buffer_object * bo,const struct ttm_place * place,struct ttm_mem_reg * reg)67 nouveau_vram_manager_new(struct ttm_mem_type_manager *man,
68 struct ttm_buffer_object *bo,
69 const struct ttm_place *place,
70 struct ttm_mem_reg *reg)
71 {
72 struct nouveau_bo *nvbo = nouveau_bo(bo);
73 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
74 int ret;
75
76 if (drm->client.device.info.ram_size == 0)
77 return -ENOMEM;
78
79 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
80 if (ret)
81 return ret;
82
83 ret = nouveau_mem_vram(reg, nvbo->contig, nvbo->page);
84 if (ret) {
85 nouveau_mem_del(reg);
86 if (ret == -ENOSPC) {
87 reg->mm_node = NULL;
88 return 0;
89 }
90 return ret;
91 }
92
93 return 0;
94 }
95
96 const struct ttm_mem_type_manager_func nouveau_vram_manager = {
97 .init = nouveau_manager_init,
98 .takedown = nouveau_manager_fini,
99 .get_node = nouveau_vram_manager_new,
100 .put_node = nouveau_manager_del,
101 .debug = nouveau_manager_debug,
102 };
103
104 static int
nouveau_gart_manager_new(struct ttm_mem_type_manager * man,struct ttm_buffer_object * bo,const struct ttm_place * place,struct ttm_mem_reg * reg)105 nouveau_gart_manager_new(struct ttm_mem_type_manager *man,
106 struct ttm_buffer_object *bo,
107 const struct ttm_place *place,
108 struct ttm_mem_reg *reg)
109 {
110 struct nouveau_bo *nvbo = nouveau_bo(bo);
111 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
112 int ret;
113
114 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
115 if (ret)
116 return ret;
117
118 reg->start = 0;
119 return 0;
120 }
121
122 const struct ttm_mem_type_manager_func nouveau_gart_manager = {
123 .init = nouveau_manager_init,
124 .takedown = nouveau_manager_fini,
125 .get_node = nouveau_gart_manager_new,
126 .put_node = nouveau_manager_del,
127 .debug = nouveau_manager_debug
128 };
129
130 static int
nv04_gart_manager_new(struct ttm_mem_type_manager * man,struct ttm_buffer_object * bo,const struct ttm_place * place,struct ttm_mem_reg * reg)131 nv04_gart_manager_new(struct ttm_mem_type_manager *man,
132 struct ttm_buffer_object *bo,
133 const struct ttm_place *place,
134 struct ttm_mem_reg *reg)
135 {
136 struct nouveau_bo *nvbo = nouveau_bo(bo);
137 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
138 struct nouveau_mem *mem;
139 int ret;
140
141 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
142 mem = nouveau_mem(reg);
143 if (ret)
144 return ret;
145
146 ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
147 reg->num_pages << PAGE_SHIFT, &mem->vma[0]);
148 if (ret) {
149 nouveau_mem_del(reg);
150 if (ret == -ENOSPC) {
151 reg->mm_node = NULL;
152 return 0;
153 }
154 return ret;
155 }
156
157 reg->start = mem->vma[0].addr >> PAGE_SHIFT;
158 return 0;
159 }
160
161 const struct ttm_mem_type_manager_func nv04_gart_manager = {
162 .init = nouveau_manager_init,
163 .takedown = nouveau_manager_fini,
164 .get_node = nv04_gart_manager_new,
165 .put_node = nouveau_manager_del,
166 .debug = nouveau_manager_debug
167 };
168
169 #ifdef __NetBSD__
170
171 int
nouveau_ttm_mmap_object(struct drm_device * dev,off_t offset,size_t size,vm_prot_t prot,struct uvm_object ** uobjp,voff_t * uoffsetp,struct file * file)172 nouveau_ttm_mmap_object(struct drm_device *dev, off_t offset, size_t size,
173 vm_prot_t prot, struct uvm_object **uobjp, voff_t *uoffsetp,
174 struct file *file)
175 {
176 struct nouveau_drm *const drm = nouveau_drm(dev);
177
178 KASSERT(0 == (offset & (PAGE_SIZE - 1)));
179
180 return ttm_bo_mmap_object(&drm->ttm.bdev, offset, size, prot,
181 uobjp, uoffsetp, file);
182 }
183
184 #else
185
186 int
nouveau_ttm_mmap(struct file * filp,struct vm_area_struct * vma)187 nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
188 {
189 struct drm_file *file_priv = filp->private_data;
190 struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev);
191
192 return ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
193 }
194
195 #endif
196
197 static int
nouveau_ttm_init_host(struct nouveau_drm * drm,u8 kind)198 nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
199 {
200 struct nvif_mmu *mmu = &drm->client.mmu;
201 int typei;
202
203 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
204 kind | NVIF_MEM_COHERENT);
205 if (typei < 0)
206 return -ENOSYS;
207
208 drm->ttm.type_host[!!kind] = typei;
209
210 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
211 if (typei < 0)
212 return -ENOSYS;
213
214 drm->ttm.type_ncoh[!!kind] = typei;
215 return 0;
216 }
217
218 int
nouveau_ttm_init(struct nouveau_drm * drm)219 nouveau_ttm_init(struct nouveau_drm *drm)
220 {
221 struct nvkm_device *device = nvxx_device(&drm->client.device);
222 struct nvkm_pci *pci = device->pci;
223 struct nvif_mmu *mmu = &drm->client.mmu;
224 struct drm_device *dev = drm->dev;
225 int typei, ret;
226
227 ret = nouveau_ttm_init_host(drm, 0);
228 if (ret)
229 return ret;
230
231 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
232 drm->client.device.info.chipset != 0x50) {
233 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
234 if (ret)
235 return ret;
236 }
237
238 if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
239 drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
240 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
241 NVIF_MEM_KIND |
242 NVIF_MEM_COMP |
243 NVIF_MEM_DISP);
244 if (typei < 0)
245 return -ENOSYS;
246
247 drm->ttm.type_vram = typei;
248 } else {
249 drm->ttm.type_vram = -1;
250 }
251
252 if (pci && pci->agp.bridge) {
253 drm->agp.bridge = pci->agp.bridge;
254 drm->agp.base = pci->agp.base;
255 drm->agp.size = pci->agp.size;
256 drm->agp.cma = pci->agp.cma;
257 }
258
259 ret = ttm_bo_device_init(&drm->ttm.bdev,
260 &nouveau_bo_driver,
261 #ifdef __NetBSD__
262 dev->bst,
263 dev->dmat,
264 #else
265 dev->anon_inode->i_mapping,
266 #endif
267 dev->vma_offset_manager,
268 drm->client.mmu.dmabits <= 32 ? true : false);
269 if (ret) {
270 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
271 return ret;
272 }
273
274 /* VRAM init */
275 drm->gem.vram_available = drm->client.device.info.ram_user;
276
277 arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
278 device->func->resource_size(device, 1));
279
280 ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_VRAM,
281 drm->gem.vram_available >> PAGE_SHIFT);
282 if (ret) {
283 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
284 return ret;
285 }
286
287 drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
288 device->func->resource_size(device, 1));
289
290 #ifdef __NetBSD__
291 pmap_pv_track(device->func->resource_addr(device, 1),
292 device->func->resource_size(device, 1));
293 #endif
294
295 /* GART init */
296 if (!drm->agp.bridge) {
297 drm->gem.gart_available = drm->client.vmm.vmm.limit;
298 } else {
299 drm->gem.gart_available = drm->agp.size;
300 }
301
302 ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_TT,
303 drm->gem.gart_available >> PAGE_SHIFT);
304 if (ret) {
305 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
306 return ret;
307 }
308
309 NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
310 NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
311 return 0;
312 }
313
314 void
nouveau_ttm_fini(struct nouveau_drm * drm)315 nouveau_ttm_fini(struct nouveau_drm *drm)
316 {
317 struct nvkm_device *device = nvxx_device(&drm->client.device);
318
319 ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_VRAM);
320 ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_TT);
321
322 ttm_bo_device_release(&drm->ttm.bdev);
323
324 arch_phys_wc_del(drm->ttm.mtrr);
325 drm->ttm.mtrr = 0;
326
327 #ifdef __NetBSD__
328 pmap_pv_untrack(device->func->resource_addr(device, 1),
329 device->func->resource_size(device, 1));
330 #endif
331 arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
332 device->func->resource_size(device, 1));
333
334 }
335