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	drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)file_priv);
190	mutex_unlock(&dev->struct_mutex);
191	return;
192}