2 * Copyright 2006 Tungsten Graphics Inc., Bismarck, ND., USA.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sub license,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
33 #define VIA_MM_ALIGN_SHIFT 4
34 #define VIA_MM_ALIGN_MASK ((1 << VIA_MM_ALIGN_SHIFT) - 1)
36 int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
38 drm_via_agp_t *agp = data;
39 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
42 mutex_lock(&dev->struct_mutex);
43 ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_AGP, 0,
44 agp->size >> VIA_MM_ALIGN_SHIFT);
47 DRM_ERROR("AGP memory manager initialisation error\n");
48 mutex_unlock(&dev->struct_mutex);
52 dev_priv->agp_initialized = 1;
53 dev_priv->agp_offset = agp->offset;
54 mutex_unlock(&dev->struct_mutex);
56 DRM_DEBUG("offset = %u, size = %u\n", agp->offset, agp->size);
60 int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
62 drm_via_fb_t *fb = data;
63 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
66 mutex_lock(&dev->struct_mutex);
67 ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_VIDEO, 0,
68 fb->size >> VIA_MM_ALIGN_SHIFT);
71 DRM_ERROR("VRAM memory manager initialisation error\n");
72 mutex_unlock(&dev->struct_mutex);
76 dev_priv->vram_initialized = 1;
77 dev_priv->vram_offset = fb->offset;
79 mutex_unlock(&dev->struct_mutex);
80 DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size);
86 int via_final_context(struct drm_device *dev, int context)
88 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
90 via_release_futex(dev_priv, context);
92 /* Linux specific until context tracking code gets ported to BSD */
93 /* Last context, perform cleanup */
94 if (dev->ctx_count == 1 && dev->dev_private) {
95 DRM_DEBUG("Last Context\n");
96 drm_irq_uninstall(dev);
97 via_cleanup_futex(dev_priv);
98 via_do_cleanup_map(dev);
103 void via_lastclose(struct drm_device *dev)
105 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
110 mutex_lock(&dev->struct_mutex);
111 drm_sman_cleanup(&dev_priv->sman);
112 dev_priv->vram_initialized = 0;
113 dev_priv->agp_initialized = 0;
114 mutex_unlock(&dev->struct_mutex);
117 int via_mem_alloc(struct drm_device *dev, void *data,
118 struct drm_file *file)
120 drm_via_mem_t *mem = data;
121 int retval = 0, user_key;
122 struct drm_memblock_item *item;
123 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
124 struct via_file_private *file_priv = file->driver_priv;
125 unsigned long tmpSize;
127 if (mem->type > VIA_MEM_AGP) {
128 DRM_ERROR("Unknown memory type allocation\n");
131 mutex_lock(&dev->struct_mutex);
132 if (0 == ((mem->type == VIA_MEM_VIDEO) ? dev_priv->vram_initialized :
133 dev_priv->agp_initialized)) {
135 ("Attempt to allocate from uninitialized memory manager.\n");
136 mutex_unlock(&dev->struct_mutex);
140 tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT;
141 item = drm_sman_alloc(&dev_priv->sman, mem->type, tmpSize, 0, 0);
148 if (idr_pre_get(&dev_priv->object_idr, GFP_KERNEL) == 0) {
153 retval = idr_get_new_above(&dev_priv->object_idr, item, 1, &user_key);
154 if (retval == -EAGAIN)
159 list_add(&item->owner_list, &file_priv->obj_list);
160 mutex_unlock(&dev->struct_mutex);
162 mem->offset = ((mem->type == VIA_MEM_VIDEO) ?
163 dev_priv->vram_offset : dev_priv->agp_offset) +
165 offset(item->mm, item->mm_info) << VIA_MM_ALIGN_SHIFT);
166 mem->index = user_key;
173 mutex_unlock(&dev->struct_mutex);
178 DRM_DEBUG("Video memory allocation failed\n");
183 int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
185 drm_via_private_t *dev_priv = dev->dev_private;
186 drm_via_mem_t *mem = data;
187 struct drm_memblock_item *obj;
190 mutex_lock(&dev->struct_mutex);
191 obj = idr_find(&dev_priv->object_idr, mem->index);
193 mutex_unlock(&dev->struct_mutex);
197 idr_remove(&dev_priv->object_idr, mem->index);
199 mutex_unlock(&dev->struct_mutex);
201 DRM_DEBUG("free = 0x%lx\n", mem->index);
207 void via_reclaim_buffers_locked(struct drm_device *dev,
208 struct drm_file *file)
210 struct via_file_private *file_priv = file->driver_priv;
211 struct drm_memblock_item *entry, *next;
213 mutex_lock(&dev->struct_mutex);
214 if (list_empty(&file_priv->obj_list)) {
215 mutex_unlock(&dev->struct_mutex);
219 if (dev->driver->dma_quiescent)
220 dev->driver->dma_quiescent(dev);
222 list_for_each_entry_safe(entry, next, &file_priv->obj_list,
224 drm_sman_free(entry);
226 mutex_unlock(&dev->struct_mutex);