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 Hellstr�m <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(DRM_IOCTL_ARGS)
37{
38	DRM_DEVICE;
39	drm_via_agp_t agp;
40	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
41	int ret;
42
43	DRM_COPY_FROM_USER_IOCTL(agp, (drm_via_agp_t __user *) data,
44				 sizeof(agp));
45	mutex_lock(&dev->struct_mutex);
46	ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_AGP, 0,
47				 agp.size >> VIA_MM_ALIGN_SHIFT);
48
49	if (ret) {
50		DRM_ERROR("AGP memory manager initialisation error\n");
51		mutex_unlock(&dev->struct_mutex);
52		return ret;
53	}
54
55	dev_priv->agp_initialized = 1;
56	dev_priv->agp_offset = agp.offset;
57	mutex_unlock(&dev->struct_mutex);
58
59	DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
60	return 0;
61}
62
63int via_fb_init(DRM_IOCTL_ARGS)
64{
65	DRM_DEVICE;
66	drm_via_fb_t fb;
67	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
68	int ret;
69
70	DRM_COPY_FROM_USER_IOCTL(fb, (drm_via_fb_t __user *) data, sizeof(fb));
71
72	mutex_lock(&dev->struct_mutex);
73	ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_VIDEO, 0,
74				 fb.size >> VIA_MM_ALIGN_SHIFT);
75
76	if (ret) {
77		DRM_ERROR("VRAM memory manager initialisation error\n");
78		mutex_unlock(&dev->struct_mutex);
79		return ret;
80	}
81
82	dev_priv->vram_initialized = 1;
83	dev_priv->vram_offset = fb.offset;
84
85	mutex_unlock(&dev->struct_mutex);
86	DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
87
88	return 0;
89
90}
91
92int via_final_context(struct drm_device *dev, int context)
93{
94	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
95
96	via_release_futex(dev_priv, context);
97
98	/* Linux specific until context tracking code gets ported to BSD */
99	/* Last context, perform cleanup */
100	if (dev->ctx_count == 1 && dev->dev_private) {
101		DRM_DEBUG("Last Context\n");
102		if (dev->irq)
103			drm_irq_uninstall(dev);
104		via_cleanup_futex(dev_priv);
105		via_do_cleanup_map(dev);
106	}
107	return 1;
108}
109
110void via_lastclose(struct drm_device *dev)
111{
112	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
113
114	if (!dev_priv)
115		return;
116
117	mutex_lock(&dev->struct_mutex);
118	drm_sman_cleanup(&dev_priv->sman);
119	dev_priv->vram_initialized = 0;
120	dev_priv->agp_initialized = 0;
121	mutex_unlock(&dev->struct_mutex);
122}
123
124int via_mem_alloc(DRM_IOCTL_ARGS)
125{
126	DRM_DEVICE;
127
128	drm_via_mem_t mem;
129	int retval = 0;
130	drm_memblock_item_t *item;
131	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
132	unsigned long tmpSize;
133
134	DRM_COPY_FROM_USER_IOCTL(mem, (drm_via_mem_t __user *) data,
135				 sizeof(mem));
136
137	if (mem.type > VIA_MEM_AGP) {
138		DRM_ERROR("Unknown memory type allocation\n");
139		return DRM_ERR(EINVAL);
140	}
141	mutex_lock(&dev->struct_mutex);
142	if (0 == ((mem.type == VIA_MEM_VIDEO) ? dev_priv->vram_initialized :
143		      dev_priv->agp_initialized)) {
144		DRM_ERROR
145		    ("Attempt to allocate from uninitialized memory manager.\n");
146		mutex_unlock(&dev->struct_mutex);
147		return DRM_ERR(EINVAL);
148	}
149
150	tmpSize = (mem.size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT;
151	item = drm_sman_alloc(&dev_priv->sman, mem.type, tmpSize, 0,
152			      (unsigned long)priv);
153	mutex_unlock(&dev->struct_mutex);
154	if (item) {
155		mem.offset = ((mem.type == VIA_MEM_VIDEO) ?
156			      dev_priv->vram_offset : dev_priv->agp_offset) +
157		    (item->mm->
158		     offset(item->mm, item->mm_info) << VIA_MM_ALIGN_SHIFT);
159		mem.index = item->user_hash.key;
160	} else {
161		mem.offset = 0;
162		mem.size = 0;
163		mem.index = 0;
164		DRM_DEBUG("Video memory allocation failed\n");
165		retval = DRM_ERR(ENOMEM);
166	}
167	DRM_COPY_TO_USER_IOCTL((drm_via_mem_t __user *) data, mem, sizeof(mem));
168
169	return retval;
170}
171
172int via_mem_free(DRM_IOCTL_ARGS)
173{
174	DRM_DEVICE;
175	drm_via_private_t *dev_priv = dev->dev_private;
176	drm_via_mem_t mem;
177	int ret;
178
179	DRM_COPY_FROM_USER_IOCTL(mem, (drm_via_mem_t __user *) data,
180				 sizeof(mem));
181
182	mutex_lock(&dev->struct_mutex);
183	ret = drm_sman_free_key(&dev_priv->sman, mem.index);
184	mutex_unlock(&dev->struct_mutex);
185	DRM_DEBUG("free = 0x%lx\n", mem.index);
186
187	return ret;
188}
189
190
191void via_reclaim_buffers_locked(drm_device_t * dev, struct file *filp)
192{
193	drm_via_private_t *dev_priv = dev->dev_private;
194	drm_file_t *priv = filp->private_data;
195
196	mutex_lock(&dev->struct_mutex);
197	if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)priv)) {
198		mutex_unlock(&dev->struct_mutex);
199		return;
200	}
201
202	if (dev->driver->dma_quiescent) {
203		dev->driver->dma_quiescent(dev);
204	}
205
206	drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)priv);
207	mutex_unlock(&dev->struct_mutex);
208	return;
209}
210