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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
38static void
39nouveau_manager_del(struct ttm_resource_manager *man, struct ttm_resource *reg)
40{
41 nouveau_mem_del(reg);
42}
43
44static int
45nouveau_vram_manager_new(struct ttm_resource_manager *man,
46 struct ttm_buffer_object *bo,
47 const struct ttm_place *place,
48 struct ttm_resource **res)
49{
50 struct nouveau_bo *nvbo = nouveau_bo(bo);
51 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
52 int ret;
53
54 if (drm->client.device.info.ram_size == 0)
55 return -ENOMEM;
56
57 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
58 if (ret)
59 return ret;
60
61 ttm_resource_init(bo, place, *res);
62
63 ret = nouveau_mem_vram(*res, nvbo->contig, nvbo->page);
64 if (ret) {
65 nouveau_mem_del(*res);
66 return ret;
67 }
68
69 return 0;
70}
71
72const struct ttm_resource_manager_func nouveau_vram_manager = {
73 .alloc = nouveau_vram_manager_new,
74 .free = nouveau_manager_del,
75};
76
77static int
78nouveau_gart_manager_new(struct ttm_resource_manager *man,
79 struct ttm_buffer_object *bo,
80 const struct ttm_place *place,
81 struct ttm_resource **res)
82{
83 struct nouveau_bo *nvbo = nouveau_bo(bo);
84 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
85 int ret;
86
87 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
88 if (ret)
89 return ret;
90
91 ttm_resource_init(bo, place, *res);
92 (*res)->start = 0;
93 return 0;
94}
95
96const struct ttm_resource_manager_func nouveau_gart_manager = {
97 .alloc = nouveau_gart_manager_new,
98 .free = nouveau_manager_del,
99};
100
101static int
102nv04_gart_manager_new(struct ttm_resource_manager *man,
103 struct ttm_buffer_object *bo,
104 const struct ttm_place *place,
105 struct ttm_resource **res)
106{
107 struct nouveau_bo *nvbo = nouveau_bo(bo);
108 struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
109 struct nouveau_mem *mem;
110 int ret;
111
112 ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
113 if (ret)
114 return ret;
115
116 mem = nouveau_mem(*res);
117 ttm_resource_init(bo, place, *res);
118 ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
119 (long)(*res)->num_pages << PAGE_SHIFT, &mem->vma[0]);
120 if (ret) {
121 nouveau_mem_del(*res);
122 return ret;
123 }
124
125 (*res)->start = mem->vma[0].addr >> PAGE_SHIFT;
126 return 0;
127}
128
129const struct ttm_resource_manager_func nv04_gart_manager = {
130 .alloc = nv04_gart_manager_new,
131 .free = nouveau_manager_del,
132};
133
134static int
135nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
136{
137 struct nvif_mmu *mmu = &drm->client.mmu;
138 int typei;
139
140 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
141 kind | NVIF_MEM_COHERENT);
142 if (typei < 0)
143 return -ENOSYS;
144
145 drm->ttm.type_host[!!kind] = typei;
146
147 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
148 if (typei < 0)
149 return -ENOSYS;
150
151 drm->ttm.type_ncoh[!!kind] = typei;
152 return 0;
153}
154
155static int
156nouveau_ttm_init_vram(struct nouveau_drm *drm)
157{
158 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
159 struct ttm_resource_manager *man = kzalloc(sizeof(*man), GFP_KERNEL);
160
161 if (!man)
162 return -ENOMEM;
163
164 man->func = &nouveau_vram_manager;
165
166 ttm_resource_manager_init(man,
167 drm->gem.vram_available >> PAGE_SHIFT);
168 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, man);
169 ttm_resource_manager_set_used(man, true);
170 return 0;
171 } else {
172 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_VRAM, false,
173 drm->gem.vram_available >> PAGE_SHIFT);
174 }
175}
176
177static void
178nouveau_ttm_fini_vram(struct nouveau_drm *drm)
179{
180 struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM);
181
182 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
183 ttm_resource_manager_set_used(man, false);
184 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
185 ttm_resource_manager_cleanup(man);
186 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, NULL);
187 kfree(man);
188 } else
189 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_VRAM);
190}
191
192static int
193nouveau_ttm_init_gtt(struct nouveau_drm *drm)
194{
195 struct ttm_resource_manager *man;
196 unsigned long size_pages = drm->gem.gart_available >> PAGE_SHIFT;
197 const struct ttm_resource_manager_func *func = NULL;
198
199 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
200 func = &nouveau_gart_manager;
201 else if (!drm->agp.bridge)
202 func = &nv04_gart_manager;
203 else
204 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_TT, true,
205 size_pages);
206
207 man = kzalloc(sizeof(*man), GFP_KERNEL);
208 if (!man)
209 return -ENOMEM;
210
211 man->func = func;
212 man->use_tt = true;
213 ttm_resource_manager_init(man, size_pages);
214 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, man);
215 ttm_resource_manager_set_used(man, true);
216 return 0;
217}
218
219static void
220nouveau_ttm_fini_gtt(struct nouveau_drm *drm)
221{
222 struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_TT);
223
224 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
225 drm->agp.bridge)
226 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_TT);
227 else {
228 ttm_resource_manager_set_used(man, false);
229 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
230 ttm_resource_manager_cleanup(man);
231 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, NULL);
232 kfree(man);
233 }
234}
235
236int
237nouveau_ttm_init(struct nouveau_drm *drm)
238{
239 struct nvkm_device *device = nvxx_device(&drm->client.device);
240 struct nvkm_pci *pci = device->pci;
241 struct nvif_mmu *mmu = &drm->client.mmu;
242 struct drm_device *dev = drm->dev;
243 bool need_swiotlb = false;
244 int typei, ret;
245
246 ret = nouveau_ttm_init_host(drm, 0);
247 if (ret)
248 return ret;
249
250 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
251 drm->client.device.info.chipset != 0x50) {
252 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
253 if (ret)
254 return ret;
255 }
256
257 if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
258 drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
259 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
260 NVIF_MEM_KIND |
261 NVIF_MEM_COMP |
262 NVIF_MEM_DISP);
263 if (typei < 0)
264 return -ENOSYS;
265
266 drm->ttm.type_vram = typei;
267 } else {
268 drm->ttm.type_vram = -1;
269 }
270
271 if (pci && pci->agp.bridge) {
272 drm->agp.bridge = pci->agp.bridge;
273 drm->agp.base = pci->agp.base;
274 drm->agp.size = pci->agp.size;
275 drm->agp.cma = pci->agp.cma;
276 }
277
278#if IS_ENABLED(CONFIG_SWIOTLB) && IS_ENABLED(CONFIG_X86)
279 need_swiotlb = is_swiotlb_active(dev->dev);
280#endif
281
282 ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev,
283 dev->anon_inode->i_mapping,
284 dev->vma_offset_manager, need_swiotlb,
285 drm->client.mmu.dmabits <= 32);
286 if (ret) {
287 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
288 return ret;
289 }
290
291
292 drm->gem.vram_available = drm->client.device.info.ram_user;
293
294 arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
295 device->func->resource_size(device, 1));
296
297 ret = nouveau_ttm_init_vram(drm);
298 if (ret) {
299 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
300 return ret;
301 }
302
303 drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
304 device->func->resource_size(device, 1));
305
306
307 if (!drm->agp.bridge) {
308 drm->gem.gart_available = drm->client.vmm.vmm.limit;
309 } else {
310 drm->gem.gart_available = drm->agp.size;
311 }
312
313 ret = nouveau_ttm_init_gtt(drm);
314 if (ret) {
315 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
316 return ret;
317 }
318
319 mutex_init(&drm->ttm.io_reserve_mutex);
320 INIT_LIST_HEAD(&drm->ttm.io_reserve_lru);
321
322 NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
323 NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
324 return 0;
325}
326
327void
328nouveau_ttm_fini(struct nouveau_drm *drm)
329{
330 struct nvkm_device *device = nvxx_device(&drm->client.device);
331
332 nouveau_ttm_fini_vram(drm);
333 nouveau_ttm_fini_gtt(drm);
334
335 ttm_device_fini(&drm->ttm.bdev);
336
337 arch_phys_wc_del(drm->ttm.mtrr);
338 drm->ttm.mtrr = 0;
339 arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
340 device->func->resource_size(device, 1));
341
342}
343
