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 "mgag200_drv.h"
33 static inline struct mga_device *
34 mgag200_bdev(struct ttm_bo_device *bd)
36 return container_of(bd, struct mga_device, ttm.bdev);
40 mgag200_ttm_mem_global_init(struct drm_global_reference *ref)
42 return ttm_mem_global_init(ref->object);
46 mgag200_ttm_mem_global_release(struct drm_global_reference *ref)
48 ttm_mem_global_release(ref->object);
51 static int mgag200_ttm_global_init(struct mga_device *ast)
53 struct drm_global_reference *global_ref;
56 global_ref = &ast->ttm.mem_global_ref;
57 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
58 global_ref->size = sizeof(struct ttm_mem_global);
59 global_ref->init = &mgag200_ttm_mem_global_init;
60 global_ref->release = &mgag200_ttm_mem_global_release;
61 r = drm_global_item_ref(global_ref);
63 DRM_ERROR("Failed setting up TTM memory accounting "
68 ast->ttm.bo_global_ref.mem_glob =
69 ast->ttm.mem_global_ref.object;
70 global_ref = &ast->ttm.bo_global_ref.ref;
71 global_ref->global_type = DRM_GLOBAL_TTM_BO;
72 global_ref->size = sizeof(struct ttm_bo_global);
73 global_ref->init = &ttm_bo_global_init;
74 global_ref->release = &ttm_bo_global_release;
75 r = drm_global_item_ref(global_ref);
77 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
78 drm_global_item_unref(&ast->ttm.mem_global_ref);
85 mgag200_ttm_global_release(struct mga_device *ast)
87 if (ast->ttm.mem_global_ref.release == NULL)
90 drm_global_item_unref(&ast->ttm.bo_global_ref.ref);
91 drm_global_item_unref(&ast->ttm.mem_global_ref);
92 ast->ttm.mem_global_ref.release = NULL;
96 static void mgag200_bo_ttm_destroy(struct ttm_buffer_object *tbo)
98 struct mgag200_bo *bo;
100 bo = container_of(tbo, struct mgag200_bo, bo);
102 drm_gem_object_release(&bo->gem);
106 static bool mgag200_ttm_bo_is_mgag200_bo(struct ttm_buffer_object *bo)
108 if (bo->destroy == &mgag200_bo_ttm_destroy)
114 mgag200_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
115 struct ttm_mem_type_manager *man)
119 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
120 man->available_caching = TTM_PL_MASK_CACHING;
121 man->default_caching = TTM_PL_FLAG_CACHED;
124 man->func = &ttm_bo_manager_func;
125 man->flags = TTM_MEMTYPE_FLAG_FIXED |
126 TTM_MEMTYPE_FLAG_MAPPABLE;
127 man->available_caching = TTM_PL_FLAG_UNCACHED |
129 man->default_caching = TTM_PL_FLAG_WC;
132 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
139 mgag200_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
141 struct mgag200_bo *mgabo = mgag200_bo(bo);
143 if (!mgag200_ttm_bo_is_mgag200_bo(bo))
146 mgag200_ttm_placement(mgabo, TTM_PL_FLAG_SYSTEM);
147 *pl = mgabo->placement;
150 static int mgag200_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
152 struct mgag200_bo *mgabo = mgag200_bo(bo);
154 return drm_vma_node_verify_access(&mgabo->gem.vma_node,
158 static int mgag200_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
159 struct ttm_mem_reg *mem)
161 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
162 struct mga_device *mdev = mgag200_bdev(bdev);
164 mem->bus.addr = NULL;
166 mem->bus.size = mem->num_pages << PAGE_SHIFT;
168 mem->bus.is_iomem = false;
169 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
171 switch (mem->mem_type) {
176 mem->bus.offset = mem->start << PAGE_SHIFT;
177 mem->bus.base = pci_resource_start(mdev->dev->pdev, 0);
178 mem->bus.is_iomem = true;
187 static void mgag200_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
191 static void mgag200_ttm_backend_destroy(struct ttm_tt *tt)
197 static struct ttm_backend_func mgag200_tt_backend_func = {
198 .destroy = &mgag200_ttm_backend_destroy,
202 static struct ttm_tt *mgag200_ttm_tt_create(struct ttm_bo_device *bdev,
203 unsigned long size, uint32_t page_flags,
204 struct page *dummy_read_page)
208 tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
211 tt->func = &mgag200_tt_backend_func;
212 if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
219 static int mgag200_ttm_tt_populate(struct ttm_tt *ttm)
221 return ttm_pool_populate(ttm);
224 static void mgag200_ttm_tt_unpopulate(struct ttm_tt *ttm)
226 ttm_pool_unpopulate(ttm);
229 struct ttm_bo_driver mgag200_bo_driver = {
230 .ttm_tt_create = mgag200_ttm_tt_create,
231 .ttm_tt_populate = mgag200_ttm_tt_populate,
232 .ttm_tt_unpopulate = mgag200_ttm_tt_unpopulate,
233 .init_mem_type = mgag200_bo_init_mem_type,
234 .eviction_valuable = ttm_bo_eviction_valuable,
235 .evict_flags = mgag200_bo_evict_flags,
237 .verify_access = mgag200_bo_verify_access,
238 .io_mem_reserve = &mgag200_ttm_io_mem_reserve,
239 .io_mem_free = &mgag200_ttm_io_mem_free,
240 .io_mem_pfn = ttm_bo_default_io_mem_pfn,
243 int mgag200_mm_init(struct mga_device *mdev)
246 struct drm_device *dev = mdev->dev;
247 struct ttm_bo_device *bdev = &mdev->ttm.bdev;
249 ret = mgag200_ttm_global_init(mdev);
253 ret = ttm_bo_device_init(&mdev->ttm.bdev,
254 mdev->ttm.bo_global_ref.ref.object,
256 dev->anon_inode->i_mapping,
257 DRM_FILE_PAGE_OFFSET,
260 DRM_ERROR("Error initialising bo driver; %d\n", ret);
264 ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, mdev->mc.vram_size >> PAGE_SHIFT);
266 DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
270 arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
271 pci_resource_len(dev->pdev, 0));
273 mdev->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
274 pci_resource_len(dev->pdev, 0));
279 void mgag200_mm_fini(struct mga_device *mdev)
281 struct drm_device *dev = mdev->dev;
283 ttm_bo_device_release(&mdev->ttm.bdev);
285 mgag200_ttm_global_release(mdev);
287 arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
288 pci_resource_len(dev->pdev, 0));
289 arch_phys_wc_del(mdev->fb_mtrr);
293 void mgag200_ttm_placement(struct mgag200_bo *bo, int domain)
298 bo->placement.placement = bo->placements;
299 bo->placement.busy_placement = bo->placements;
300 if (domain & TTM_PL_FLAG_VRAM)
301 bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
302 if (domain & TTM_PL_FLAG_SYSTEM)
303 bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
305 bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
306 bo->placement.num_placement = c;
307 bo->placement.num_busy_placement = c;
308 for (i = 0; i < c; ++i) {
309 bo->placements[i].fpfn = 0;
310 bo->placements[i].lpfn = 0;
314 int mgag200_bo_create(struct drm_device *dev, int size, int align,
315 uint32_t flags, struct mgag200_bo **pmgabo)
317 struct mga_device *mdev = dev->dev_private;
318 struct mgag200_bo *mgabo;
322 mgabo = kzalloc(sizeof(struct mgag200_bo), GFP_KERNEL);
326 ret = drm_gem_object_init(dev, &mgabo->gem, size);
332 mgabo->bo.bdev = &mdev->ttm.bdev;
334 mgag200_ttm_placement(mgabo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
336 acc_size = ttm_bo_dma_acc_size(&mdev->ttm.bdev, size,
337 sizeof(struct mgag200_bo));
339 ret = ttm_bo_init(&mdev->ttm.bdev, &mgabo->bo, size,
340 ttm_bo_type_device, &mgabo->placement,
341 align >> PAGE_SHIFT, false, NULL, acc_size,
342 NULL, NULL, mgag200_bo_ttm_destroy);
350 static inline u64 mgag200_bo_gpu_offset(struct mgag200_bo *bo)
352 return bo->bo.offset;
355 int mgag200_bo_pin(struct mgag200_bo *bo, u32 pl_flag, u64 *gpu_addr)
362 *gpu_addr = mgag200_bo_gpu_offset(bo);
366 mgag200_ttm_placement(bo, pl_flag);
367 for (i = 0; i < bo->placement.num_placement; i++)
368 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
369 ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
375 *gpu_addr = mgag200_bo_gpu_offset(bo);
379 int mgag200_bo_unpin(struct mgag200_bo *bo)
382 if (!bo->pin_count) {
383 DRM_ERROR("unpin bad %p\n", bo);
390 for (i = 0; i < bo->placement.num_placement ; i++)
391 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
392 return ttm_bo_validate(&bo->bo, &bo->placement, false, false);
395 int mgag200_bo_push_sysram(struct mgag200_bo *bo)
398 if (!bo->pin_count) {
399 DRM_ERROR("unpin bad %p\n", bo);
406 if (bo->kmap.virtual)
407 ttm_bo_kunmap(&bo->kmap);
409 mgag200_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
410 for (i = 0; i < bo->placement.num_placement ; i++)
411 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
413 ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
415 DRM_ERROR("pushing to VRAM failed\n");
421 int mgag200_mmap(struct file *filp, struct vm_area_struct *vma)
423 struct drm_file *file_priv;
424 struct mga_device *mdev;
426 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
429 file_priv = filp->private_data;
430 mdev = file_priv->minor->dev->dev_private;
431 return ttm_bo_mmap(filp, vma, &mdev->ttm.bdev);