2 * Copyright 2012 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
18 * USE OR OTHER DEALINGS IN THE SOFTWARE.
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
26 * Authors: Dave Airlie <airlied@redhat.com>
29 #include <drm/ttm/ttm_page_alloc.h>
31 #include "cirrus_drv.h"
33 static inline struct cirrus_device *
34 cirrus_bdev(struct ttm_bo_device *bd)
36 return container_of(bd, struct cirrus_device, ttm.bdev);
39 static void cirrus_bo_ttm_destroy(struct ttm_buffer_object *tbo)
43 bo = container_of(tbo, struct cirrus_bo, bo);
45 drm_gem_object_release(&bo->gem);
49 static bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo)
51 if (bo->destroy == &cirrus_bo_ttm_destroy)
57 cirrus_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
58 struct ttm_mem_type_manager *man)
62 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
63 man->available_caching = TTM_PL_MASK_CACHING;
64 man->default_caching = TTM_PL_FLAG_CACHED;
67 man->func = &ttm_bo_manager_func;
68 man->flags = TTM_MEMTYPE_FLAG_FIXED |
69 TTM_MEMTYPE_FLAG_MAPPABLE;
70 man->available_caching = TTM_PL_FLAG_UNCACHED |
72 man->default_caching = TTM_PL_FLAG_WC;
75 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
82 cirrus_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
84 struct cirrus_bo *cirrusbo = cirrus_bo(bo);
86 if (!cirrus_ttm_bo_is_cirrus_bo(bo))
89 cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_SYSTEM);
90 *pl = cirrusbo->placement;
93 static int cirrus_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
95 struct cirrus_bo *cirrusbo = cirrus_bo(bo);
97 return drm_vma_node_verify_access(&cirrusbo->gem.vma_node,
101 static int cirrus_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
102 struct ttm_mem_reg *mem)
104 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
105 struct cirrus_device *cirrus = cirrus_bdev(bdev);
107 mem->bus.addr = NULL;
109 mem->bus.size = mem->num_pages << PAGE_SHIFT;
111 mem->bus.is_iomem = false;
112 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
114 switch (mem->mem_type) {
119 mem->bus.offset = mem->start << PAGE_SHIFT;
120 mem->bus.base = pci_resource_start(cirrus->dev->pdev, 0);
121 mem->bus.is_iomem = true;
130 static void cirrus_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
134 static void cirrus_ttm_backend_destroy(struct ttm_tt *tt)
140 static struct ttm_backend_func cirrus_tt_backend_func = {
141 .destroy = &cirrus_ttm_backend_destroy,
145 static struct ttm_tt *cirrus_ttm_tt_create(struct ttm_buffer_object *bo,
150 tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
153 tt->func = &cirrus_tt_backend_func;
154 if (ttm_tt_init(tt, bo, page_flags)) {
161 struct ttm_bo_driver cirrus_bo_driver = {
162 .ttm_tt_create = cirrus_ttm_tt_create,
163 .init_mem_type = cirrus_bo_init_mem_type,
164 .eviction_valuable = ttm_bo_eviction_valuable,
165 .evict_flags = cirrus_bo_evict_flags,
167 .verify_access = cirrus_bo_verify_access,
168 .io_mem_reserve = &cirrus_ttm_io_mem_reserve,
169 .io_mem_free = &cirrus_ttm_io_mem_free,
172 int cirrus_mm_init(struct cirrus_device *cirrus)
175 struct drm_device *dev = cirrus->dev;
176 struct ttm_bo_device *bdev = &cirrus->ttm.bdev;
178 ret = ttm_bo_device_init(&cirrus->ttm.bdev,
180 dev->anon_inode->i_mapping,
181 DRM_FILE_PAGE_OFFSET,
184 DRM_ERROR("Error initialising bo driver; %d\n", ret);
188 ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
189 cirrus->mc.vram_size >> PAGE_SHIFT);
191 DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
195 arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
196 pci_resource_len(dev->pdev, 0));
198 cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
199 pci_resource_len(dev->pdev, 0));
201 cirrus->mm_inited = true;
205 void cirrus_mm_fini(struct cirrus_device *cirrus)
207 struct drm_device *dev = cirrus->dev;
209 if (!cirrus->mm_inited)
212 ttm_bo_device_release(&cirrus->ttm.bdev);
214 arch_phys_wc_del(cirrus->fb_mtrr);
216 arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
217 pci_resource_len(dev->pdev, 0));
220 void cirrus_ttm_placement(struct cirrus_bo *bo, int domain)
224 bo->placement.placement = bo->placements;
225 bo->placement.busy_placement = bo->placements;
226 if (domain & TTM_PL_FLAG_VRAM)
227 bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
228 if (domain & TTM_PL_FLAG_SYSTEM)
229 bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
231 bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
232 bo->placement.num_placement = c;
233 bo->placement.num_busy_placement = c;
234 for (i = 0; i < c; ++i) {
235 bo->placements[i].fpfn = 0;
236 bo->placements[i].lpfn = 0;
240 int cirrus_bo_create(struct drm_device *dev, int size, int align,
241 uint32_t flags, struct cirrus_bo **pcirrusbo)
243 struct cirrus_device *cirrus = dev->dev_private;
244 struct cirrus_bo *cirrusbo;
248 cirrusbo = kzalloc(sizeof(struct cirrus_bo), GFP_KERNEL);
252 ret = drm_gem_object_init(dev, &cirrusbo->gem, size);
258 cirrusbo->bo.bdev = &cirrus->ttm.bdev;
260 cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
262 acc_size = ttm_bo_dma_acc_size(&cirrus->ttm.bdev, size,
263 sizeof(struct cirrus_bo));
265 ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size,
266 ttm_bo_type_device, &cirrusbo->placement,
267 align >> PAGE_SHIFT, false, acc_size,
268 NULL, NULL, cirrus_bo_ttm_destroy);
272 *pcirrusbo = cirrusbo;
276 static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo)
278 return bo->bo.offset;
281 int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr)
283 struct ttm_operation_ctx ctx = { false, false };
289 *gpu_addr = cirrus_bo_gpu_offset(bo);
292 cirrus_ttm_placement(bo, pl_flag);
293 for (i = 0; i < bo->placement.num_placement; i++)
294 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
295 ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
301 *gpu_addr = cirrus_bo_gpu_offset(bo);
305 int cirrus_bo_push_sysram(struct cirrus_bo *bo)
307 struct ttm_operation_ctx ctx = { false, false };
309 if (!bo->pin_count) {
310 DRM_ERROR("unpin bad %p\n", bo);
317 if (bo->kmap.virtual)
318 ttm_bo_kunmap(&bo->kmap);
320 cirrus_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
321 for (i = 0; i < bo->placement.num_placement ; i++)
322 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
324 ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
326 DRM_ERROR("pushing to VRAM failed\n");
332 int cirrus_mmap(struct file *filp, struct vm_area_struct *vma)
334 struct drm_file *file_priv;
335 struct cirrus_device *cirrus;
337 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
340 file_priv = filp->private_data;
341 cirrus = file_priv->minor->dev->dev_private;
342 return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev);