tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2006 Tungsten Graphics Inc., Bismarck, ND., USA.
3 * All rights reserved.
4 *
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:
11 *
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
14 * of the Software.
15 *
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.
23 */
24/*
25 * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
26 */
27
28#include "drmP.h"
29#include "via_drm.h"
30#include "via_drv.h"
31#include "drm_sman.h"
32
33#define VIA_MM_ALIGN_SHIFT 4
34#define VIA_MM_ALIGN_MASK ( (1 << VIA_MM_ALIGN_SHIFT) - 1)
35
36int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
37{
38 drm_via_agp_t *agp = data;
39 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
40 int ret;
41
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);
45
46 if (ret) {
47 DRM_ERROR("AGP memory manager initialisation error\n");
48 mutex_unlock(&dev->struct_mutex);
49 return ret;
50 }
51
52 dev_priv->agp_initialized = 1;
53 dev_priv->agp_offset = agp->offset;
54 mutex_unlock(&dev->struct_mutex);
55
56 DRM_DEBUG("offset = %u, size = %u\n", agp->offset, agp->size);
57 return 0;
58}
59
60int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
61{
62 drm_via_fb_t *fb = data;
63 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
64 int ret;
65
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);
69
70 if (ret) {
71 DRM_ERROR("VRAM memory manager initialisation error\n");
72 mutex_unlock(&dev->struct_mutex);
73 return ret;
74 }
75
76 dev_priv->vram_initialized = 1;
77 dev_priv->vram_offset = fb->offset;
78
79 mutex_unlock(&dev->struct_mutex);
80 DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size);
81
82 return 0;
83
84}
85
86int via_final_context(struct drm_device *dev, int context)
87{
88 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
89
90 via_release_futex(dev_priv, context);
91
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);
99 }
100 return 1;
101}
102
103void via_lastclose(struct drm_device *dev)
104{
105 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
106
107 if (!dev_priv)
108 return;
109
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);
115}
116
117int via_mem_alloc(struct drm_device *dev, void *data,
118 struct drm_file *file_priv)
119{
120 drm_via_mem_t *mem = data;
121 int retval = 0;
122 struct drm_memblock_item *item;
123 drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
124 unsigned long tmpSize;
125
126 if (mem->type > VIA_MEM_AGP) {
127 DRM_ERROR("Unknown memory type allocation\n");
128 return -EINVAL;
129 }
130 mutex_lock(&dev->struct_mutex);
131 if (0 == ((mem->type == VIA_MEM_VIDEO) ? dev_priv->vram_initialized :
132 dev_priv->agp_initialized)) {
133 DRM_ERROR
134 ("Attempt to allocate from uninitialized memory manager.\n");
135 mutex_unlock(&dev->struct_mutex);
136 return -EINVAL;
137 }
138
139 tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT;
140 item = drm_sman_alloc(&dev_priv->sman, mem->type, tmpSize, 0,
141 (unsigned long)file_priv);
142 mutex_unlock(&dev->struct_mutex);
143 if (item) {
144 mem->offset = ((mem->type == VIA_MEM_VIDEO) ?
145 dev_priv->vram_offset : dev_priv->agp_offset) +
146 (item->mm->
147 offset(item->mm, item->mm_info) << VIA_MM_ALIGN_SHIFT);
148 mem->index = item->user_hash.key;
149 } else {
150 mem->offset = 0;
151 mem->size = 0;
152 mem->index = 0;
153 DRM_DEBUG("Video memory allocation failed\n");
154 retval = -ENOMEM;
155 }
156
157 return retval;
158}
159
160int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
161{
162 drm_via_private_t *dev_priv = dev->dev_private;
163 drm_via_mem_t *mem = data;
164 int ret;
165
166 mutex_lock(&dev->struct_mutex);
167 ret = drm_sman_free_key(&dev_priv->sman, mem->index);
168 mutex_unlock(&dev->struct_mutex);
169 DRM_DEBUG("free = 0x%lx\n", mem->index);
170
171 return ret;
172}
173
174
175void via_reclaim_buffers_locked(struct drm_device * dev,
176 struct drm_file *file_priv)
177{
178 drm_via_private_t *dev_priv = dev->dev_private;
179
180 mutex_lock(&dev->struct_mutex);
181 if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)file_priv)) {
182 mutex_unlock(&dev->struct_mutex);
183 return;
184 }
185
186 if (dev->driver->dma_quiescent) {
187 dev->driver->dma_quiescent(dev);
188 }
189
190 drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)file_priv);
191 mutex_unlock(&dev->struct_mutex);
192 return;
193}