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
28#include <drm/ttm/ttm_range_manager.h>
29#include <drm/drm_cache.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,
40		    struct ttm_resource *reg)
41{
42	nouveau_mem_del(man, reg);
43}
44
45static bool
46nouveau_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
54static bool
55nouveau_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
63static int
64nouveau_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
91const 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
98static int
99nouveau_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
117const 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
124static int
125nv04_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
152const 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
159static int
160nouveau_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
180static int
181nouveau_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
202static void
203nouveau_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
217static int
218nouveau_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
244static void
245nouveau_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
261int
262nouveau_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	int typei, ret;
269
270	ret = nouveau_ttm_init_host(drm, 0);
271	if (ret)
272		return ret;
273
274	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
275	    drm->client.device.info.chipset != 0x50) {
276		ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
277		if (ret)
278			return ret;
279	}
280
281	if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
282	    drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
283		typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
284					   NVIF_MEM_KIND |
285					   NVIF_MEM_COMP |
286					   NVIF_MEM_DISP);
287		if (typei < 0)
288			return -ENOSYS;
289
290		drm->ttm.type_vram = typei;
291	} else {
292		drm->ttm.type_vram = -1;
293	}
294
295	if (pci && pci->agp.bridge) {
296		drm->agp.bridge = pci->agp.bridge;
297		drm->agp.base = pci->agp.base;
298		drm->agp.size = pci->agp.size;
299		drm->agp.cma = pci->agp.cma;
300	}
301
302	ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev,
303				  dev->anon_inode->i_mapping,
304				  dev->vma_offset_manager,
305				  drm_need_swiotlb(drm->client.mmu.dmabits),
306				  drm->client.mmu.dmabits <= 32);
307	if (ret) {
308		NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
309		return ret;
310	}
311
312	/* VRAM init */
313	drm->gem.vram_available = drm->client.device.info.ram_user;
314
315	arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
316				   device->func->resource_size(device, 1));
317
318	ret = nouveau_ttm_init_vram(drm);
319	if (ret) {
320		NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
321		return ret;
322	}
323
324	drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
325					 device->func->resource_size(device, 1));
326
327	/* GART init */
328	if (!drm->agp.bridge) {
329		drm->gem.gart_available = drm->client.vmm.vmm.limit;
330	} else {
331		drm->gem.gart_available = drm->agp.size;
332	}
333
334	ret = nouveau_ttm_init_gtt(drm);
335	if (ret) {
336		NV_ERROR(drm, "GART mm init failed, %d\n", ret);
337		return ret;
338	}
339
340	mutex_init(&drm->ttm.io_reserve_mutex);
341	INIT_LIST_HEAD(&drm->ttm.io_reserve_lru);
342
343	NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
344	NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
345	return 0;
346}
347
348void
349nouveau_ttm_fini(struct nouveau_drm *drm)
350{
351	struct nvkm_device *device = nvxx_device(&drm->client.device);
352
353	nouveau_ttm_fini_vram(drm);
354	nouveau_ttm_fini_gtt(drm);
355
356	ttm_device_fini(&drm->ttm.bdev);
357
358	arch_phys_wc_del(drm->ttm.mtrr);
359	drm->ttm.mtrr = 0;
360	arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
361				device->func->resource_size(device, 1));
362
363}
364