1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
31 * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
38 #if defined(__linux__)
39 #include <video/sisfb.h>
45 #define SIS_MM_ALIGN_SHIFT 4
46 #define SIS_MM_ALIGN_MASK ( (1 << SIS_MM_ALIGN_SHIFT) - 1)
48 #if defined(__linux__) && defined(CONFIG_FB_SIS)
49 /* fb management via fb device */
51 #define SIS_MM_ALIGN_SHIFT 0
52 #define SIS_MM_ALIGN_MASK 0
54 static void *sis_sman_mm_allocate(void *private, unsigned long size,
57 struct sis_memreq req;
64 return (void *)~req.offset;
67 static void sis_sman_mm_free(void *private, void *ref)
69 sis_free(~((unsigned long)ref));
72 static void sis_sman_mm_destroy(void *private)
77 static unsigned long sis_sman_mm_offset(void *private, void *ref)
79 return ~((unsigned long)ref);
84 static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
86 drm_sis_private_t *dev_priv = dev->dev_private;
87 drm_sis_fb_t *fb = data;
90 mutex_lock(&dev->struct_mutex);
91 #if defined(__linux__) && defined(CONFIG_FB_SIS)
93 struct drm_sman_mm sman_mm;
94 sman_mm.private = (void *)0xFFFFFFFF;
95 sman_mm.allocate = sis_sman_mm_allocate;
96 sman_mm.free = sis_sman_mm_free;
97 sman_mm.destroy = sis_sman_mm_destroy;
98 sman_mm.offset = sis_sman_mm_offset;
100 drm_sman_set_manager(&dev_priv->sman, VIDEO_TYPE, &sman_mm);
103 ret = drm_sman_set_range(&dev_priv->sman, VIDEO_TYPE, 0,
104 fb->size >> SIS_MM_ALIGN_SHIFT);
108 DRM_ERROR("VRAM memory manager initialisation error\n");
109 mutex_unlock(&dev->struct_mutex);
113 dev_priv->vram_initialized = 1;
114 dev_priv->vram_offset = fb->offset;
116 mutex_unlock(&dev->struct_mutex);
117 DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size);
122 static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file_priv,
123 void *data, int pool)
125 drm_sis_private_t *dev_priv = dev->dev_private;
126 drm_sis_mem_t *mem = data;
128 struct drm_memblock_item *item;
130 mutex_lock(&dev->struct_mutex);
132 if (0 == ((pool == 0) ? 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 mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
141 item = drm_sman_alloc(&dev_priv->sman, pool, mem->size, 0,
142 (unsigned long)file_priv);
144 mutex_unlock(&dev->struct_mutex);
146 mem->offset = ((pool == 0) ?
147 dev_priv->vram_offset : dev_priv->agp_offset) +
149 offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
150 mem->free = item->user_hash.key;
151 mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
159 DRM_DEBUG("alloc %d, size = %d, offset = %d\n", pool, mem->size,
165 static int sis_drm_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
167 drm_sis_private_t *dev_priv = dev->dev_private;
168 drm_sis_mem_t *mem = data;
171 mutex_lock(&dev->struct_mutex);
172 ret = drm_sman_free_key(&dev_priv->sman, mem->free);
173 mutex_unlock(&dev->struct_mutex);
174 DRM_DEBUG("free = 0x%lx\n", mem->free);
179 static int sis_fb_alloc(struct drm_device *dev, void *data,
180 struct drm_file *file_priv)
182 return sis_drm_alloc(dev, file_priv, data, VIDEO_TYPE);
185 static int sis_ioctl_agp_init(struct drm_device *dev, void *data,
186 struct drm_file *file_priv)
188 drm_sis_private_t *dev_priv = dev->dev_private;
189 drm_sis_agp_t *agp = data;
191 dev_priv = dev->dev_private;
193 mutex_lock(&dev->struct_mutex);
194 ret = drm_sman_set_range(&dev_priv->sman, AGP_TYPE, 0,
195 agp->size >> SIS_MM_ALIGN_SHIFT);
198 DRM_ERROR("AGP memory manager initialisation error\n");
199 mutex_unlock(&dev->struct_mutex);
203 dev_priv->agp_initialized = 1;
204 dev_priv->agp_offset = agp->offset;
205 mutex_unlock(&dev->struct_mutex);
207 DRM_DEBUG("offset = %u, size = %u\n", agp->offset, agp->size);
211 static int sis_ioctl_agp_alloc(struct drm_device *dev, void *data,
212 struct drm_file *file_priv)
215 return sis_drm_alloc(dev, file_priv, data, AGP_TYPE);
218 static drm_local_map_t *sis_reg_init(struct drm_device *dev)
220 struct drm_map_list *entry;
221 drm_local_map_t *map;
223 list_for_each_entry(entry, &dev->maplist, head) {
227 if (map->type == _DRM_REGISTERS) {
234 int sis_idle(struct drm_device *dev)
236 drm_sis_private_t *dev_priv = dev->dev_private;
241 if (dev_priv->idle_fault)
244 if (dev_priv->mmio == NULL) {
245 dev_priv->mmio = sis_reg_init(dev);
246 if (dev_priv->mmio == NULL) {
247 DRM_ERROR("Could not find register map.\n");
253 * Implement a device switch here if needed
256 if (dev_priv->chipset != SIS_CHIP_315)
260 * Timeout after 3 seconds. We cannot use DRM_WAIT_ON here
261 * because its polling frequency is too low.
264 end = jiffies + (DRM_HZ * 3);
266 for (i=0; i<4; ++i) {
268 idle_reg = SIS_READ(0x85cc);
269 } while ( !time_after_eq(jiffies, end) &&
270 ((idle_reg & 0x80000000) != 0x80000000));
273 if (time_after_eq(jiffies, end)) {
274 DRM_ERROR("Graphics engine idle timeout. "
275 "Disabling idle check\n");
276 dev_priv->idle_fault = 1;
280 * The caller never sees an error code. It gets trapped
288 void sis_lastclose(struct drm_device *dev)
290 drm_sis_private_t *dev_priv = dev->dev_private;
295 mutex_lock(&dev->struct_mutex);
296 drm_sman_cleanup(&dev_priv->sman);
297 dev_priv->vram_initialized = 0;
298 dev_priv->agp_initialized = 0;
299 dev_priv->mmio = NULL;
300 mutex_unlock(&dev->struct_mutex);
303 void sis_reclaim_buffers_locked(struct drm_device * dev,
304 struct drm_file *file_priv)
306 drm_sis_private_t *dev_priv = dev->dev_private;
308 mutex_lock(&dev->struct_mutex);
309 if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)file_priv)) {
310 mutex_unlock(&dev->struct_mutex);
314 if (dev->driver->dma_quiescent) {
315 dev->driver->dma_quiescent(dev);
318 drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)file_priv);
319 mutex_unlock(&dev->struct_mutex);
323 struct drm_ioctl_desc sis_ioctls[] = {
324 DRM_IOCTL_DEF(DRM_SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
325 DRM_IOCTL_DEF(DRM_SIS_FB_FREE, sis_drm_free, DRM_AUTH),
326 DRM_IOCTL_DEF(DRM_SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
327 DRM_IOCTL_DEF(DRM_SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
328 DRM_IOCTL_DEF(DRM_SIS_AGP_FREE, sis_drm_free, DRM_AUTH),
329 DRM_IOCTL_DEF(DRM_SIS_FB_INIT, sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
332 int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);