2 * Copyright 2013 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 "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
22 * Authors: Dave Airlie
26 #include <linux/delay.h>
29 #include <drm/drm_file.h>
30 #include <drm/drm_debugfs.h>
31 #include <drm/qxl_drm.h>
32 #include <drm/ttm/ttm_bo_api.h>
33 #include <drm/ttm/ttm_bo_driver.h>
34 #include <drm/ttm/ttm_module.h>
35 #include <drm/ttm/ttm_page_alloc.h>
36 #include <drm/ttm/ttm_placement.h>
39 #include "qxl_object.h"
41 static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
43 struct qxl_mman *mman;
44 struct qxl_device *qdev;
46 mman = container_of(bdev, struct qxl_mman, bdev);
47 qdev = container_of(mman, struct qxl_device, mman);
51 static struct vm_operations_struct qxl_ttm_vm_ops;
52 static const struct vm_operations_struct *ttm_vm_ops;
54 static vm_fault_t qxl_ttm_fault(struct vm_fault *vmf)
56 struct ttm_buffer_object *bo;
59 bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data;
61 return VM_FAULT_NOPAGE;
62 ret = ttm_vm_ops->fault(vmf);
66 int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
69 struct drm_file *file_priv = filp->private_data;
70 struct qxl_device *qdev = file_priv->minor->dev->dev_private;
74 "filp->private_data->minor->dev->dev_private == NULL\n");
77 DRM_DEBUG_DRIVER("filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
78 filp->private_data, vma->vm_pgoff);
80 r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
83 if (unlikely(ttm_vm_ops == NULL)) {
84 ttm_vm_ops = vma->vm_ops;
85 qxl_ttm_vm_ops = *ttm_vm_ops;
86 qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
88 vma->vm_ops = &qxl_ttm_vm_ops;
92 static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
97 static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
98 struct ttm_mem_type_manager *man)
100 struct qxl_device *qdev = qxl_get_qdev(bdev);
101 unsigned int gpu_offset_shift =
102 64 - (qdev->rom->slot_gen_bits + qdev->rom->slot_id_bits + 8);
103 struct qxl_memslot *slot;
108 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
109 man->available_caching = TTM_PL_MASK_CACHING;
110 man->default_caching = TTM_PL_FLAG_CACHED;
114 /* "On-card" video ram */
115 slot = (type == TTM_PL_VRAM) ?
116 &qdev->main_slot : &qdev->surfaces_slot;
117 slot->gpu_offset = (uint64_t)type << gpu_offset_shift;
118 man->func = &ttm_bo_manager_func;
119 man->gpu_offset = slot->gpu_offset;
120 man->flags = TTM_MEMTYPE_FLAG_FIXED |
121 TTM_MEMTYPE_FLAG_MAPPABLE;
122 man->available_caching = TTM_PL_MASK_CACHING;
123 man->default_caching = TTM_PL_FLAG_CACHED;
126 DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
132 static void qxl_evict_flags(struct ttm_buffer_object *bo,
133 struct ttm_placement *placement)
136 static const struct ttm_place placements = {
139 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
142 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
143 placement->placement = &placements;
144 placement->busy_placement = &placements;
145 placement->num_placement = 1;
146 placement->num_busy_placement = 1;
150 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
151 *placement = qbo->placement;
154 static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
156 struct qxl_bo *qbo = to_qxl_bo(bo);
158 return drm_vma_node_verify_access(&qbo->gem_base.vma_node,
162 static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
163 struct ttm_mem_reg *mem)
165 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
166 struct qxl_device *qdev = qxl_get_qdev(bdev);
168 mem->bus.addr = NULL;
170 mem->bus.size = mem->num_pages << PAGE_SHIFT;
172 mem->bus.is_iomem = false;
173 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
175 switch (mem->mem_type) {
180 mem->bus.is_iomem = true;
181 mem->bus.base = qdev->vram_base;
182 mem->bus.offset = mem->start << PAGE_SHIFT;
185 mem->bus.is_iomem = true;
186 mem->bus.base = qdev->surfaceram_base;
187 mem->bus.offset = mem->start << PAGE_SHIFT;
195 static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
196 struct ttm_mem_reg *mem)
201 * TTM backend functions.
205 struct qxl_device *qdev;
209 static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
210 struct ttm_mem_reg *bo_mem)
212 struct qxl_ttm_tt *gtt = (void *)ttm;
214 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
215 if (!ttm->num_pages) {
216 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
217 ttm->num_pages, bo_mem, ttm);
219 /* Not implemented */
223 static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
225 /* Not implemented */
229 static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
231 struct qxl_ttm_tt *gtt = (void *)ttm;
233 ttm_tt_fini(>t->ttm);
237 static struct ttm_backend_func qxl_backend_func = {
238 .bind = &qxl_ttm_backend_bind,
239 .unbind = &qxl_ttm_backend_unbind,
240 .destroy = &qxl_ttm_backend_destroy,
243 static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
246 struct qxl_device *qdev;
247 struct qxl_ttm_tt *gtt;
249 qdev = qxl_get_qdev(bo->bdev);
250 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
253 gtt->ttm.func = &qxl_backend_func;
255 if (ttm_tt_init(>t->ttm, bo, page_flags)) {
262 static void qxl_move_null(struct ttm_buffer_object *bo,
263 struct ttm_mem_reg *new_mem)
265 struct ttm_mem_reg *old_mem = &bo->mem;
267 BUG_ON(old_mem->mm_node != NULL);
269 new_mem->mm_node = NULL;
272 static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
273 struct ttm_operation_ctx *ctx,
274 struct ttm_mem_reg *new_mem)
276 struct ttm_mem_reg *old_mem = &bo->mem;
279 ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
283 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
284 qxl_move_null(bo, new_mem);
287 return ttm_bo_move_memcpy(bo, ctx, new_mem);
290 static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
292 struct ttm_mem_reg *new_mem)
295 struct qxl_device *qdev;
297 if (!qxl_ttm_bo_is_qxl_bo(bo))
300 qdev = qbo->gem_base.dev->dev_private;
302 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id)
303 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
306 static struct ttm_bo_driver qxl_bo_driver = {
307 .ttm_tt_create = &qxl_ttm_tt_create,
308 .invalidate_caches = &qxl_invalidate_caches,
309 .init_mem_type = &qxl_init_mem_type,
310 .eviction_valuable = ttm_bo_eviction_valuable,
311 .evict_flags = &qxl_evict_flags,
312 .move = &qxl_bo_move,
313 .verify_access = &qxl_verify_access,
314 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
315 .io_mem_free = &qxl_ttm_io_mem_free,
316 .move_notify = &qxl_bo_move_notify,
319 int qxl_ttm_init(struct qxl_device *qdev)
322 int num_io_pages; /* != rom->num_io_pages, we include surface0 */
324 /* No others user of address space so set it to 0 */
325 r = ttm_bo_device_init(&qdev->mman.bdev,
327 qdev->ddev.anon_inode->i_mapping,
330 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
333 /* NOTE: this includes the framebuffer (aka surface 0) */
334 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
335 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
338 DRM_ERROR("Failed initializing VRAM heap.\n");
341 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV,
342 qdev->surfaceram_size / PAGE_SIZE);
344 DRM_ERROR("Failed initializing Surfaces heap.\n");
347 DRM_INFO("qxl: %uM of VRAM memory size\n",
348 (unsigned int)qdev->vram_size / (1024 * 1024));
349 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
350 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
351 DRM_INFO("qxl: %uM of Surface memory size\n",
352 (unsigned int)qdev->surfaceram_size / (1024 * 1024));
356 void qxl_ttm_fini(struct qxl_device *qdev)
358 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
359 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV);
360 ttm_bo_device_release(&qdev->mman.bdev);
361 DRM_INFO("qxl: ttm finalized\n");
364 #define QXL_DEBUGFS_MEM_TYPES 2
366 #if defined(CONFIG_DEBUG_FS)
367 static int qxl_mm_dump_table(struct seq_file *m, void *data)
369 struct drm_info_node *node = (struct drm_info_node *)m->private;
370 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
371 struct drm_device *dev = node->minor->dev;
372 struct qxl_device *rdev = dev->dev_private;
373 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
374 struct drm_printer p = drm_seq_file_printer(m);
376 spin_lock(&glob->lru_lock);
377 drm_mm_print(mm, &p);
378 spin_unlock(&glob->lru_lock);
383 int qxl_ttm_debugfs_init(struct qxl_device *qdev)
385 #if defined(CONFIG_DEBUG_FS)
386 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
387 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
390 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
392 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
394 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
395 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
396 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
397 qxl_mem_types_list[i].driver_features = 0;
399 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
401 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV].priv;
404 return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);