1 /**************************************************************************
2 *
3 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA.
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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.
25 *
26 *
27 **************************************************************************/
28
29 /*
30 * Authors:
31 * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
32 */
33
34 #include "drmP.h"
35 #include "sis_drm.h"
36 #include "sis_drv.h"
37
38 #include <video/sisfb.h>
39
40 #define VIDEO_TYPE 0
41 #define AGP_TYPE 1
42
43
44 #if defined(CONFIG_FB_SIS)
45 /* fb management via fb device */
46
47 #define SIS_MM_ALIGN_SHIFT 0
48 #define SIS_MM_ALIGN_MASK 0
49
50 static void *sis_sman_mm_allocate(void *private, unsigned long size,
51 unsigned alignment)
52 {
53 struct sis_memreq req;
54
55 req.size = size;
56 sis_malloc(&req);
57 if (req.size == 0)
58 return NULL;
59 else
60 return (void *)~req.offset;
61 }
62
63 static void sis_sman_mm_free(void *private, void *ref)
64 {
65 sis_free(~((unsigned long)ref));
66 }
67
68 static void sis_sman_mm_destroy(void *private)
69 {
70 ;
71 }
72
73 static unsigned long sis_sman_mm_offset(void *private, void *ref)
74 {
75 return ~((unsigned long)ref);
76 }
77
78 #else /* CONFIG_FB_SIS */
79
80 #define SIS_MM_ALIGN_SHIFT 4
81 #define SIS_MM_ALIGN_MASK ( (1 << SIS_MM_ALIGN_SHIFT) - 1)
82
83 #endif /* CONFIG_FB_SIS */
84
85 static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
86 {
87 drm_sis_private_t *dev_priv = dev->dev_private;
88 drm_sis_fb_t *fb = data;
89 int ret;
90
91 mutex_lock(&dev->struct_mutex);
92 #if defined(CONFIG_FB_SIS)
93 {
94 struct drm_sman_mm sman_mm;
95 sman_mm.private = (void *)0xFFFFFFFF;
96 sman_mm.allocate = sis_sman_mm_allocate;
97 sman_mm.free = sis_sman_mm_free;
98 sman_mm.destroy = sis_sman_mm_destroy;
99 sman_mm.offset = sis_sman_mm_offset;
100 ret =
101 drm_sman_set_manager(&dev_priv->sman, VIDEO_TYPE, &sman_mm);
102 }
103 #else
104 ret = drm_sman_set_range(&dev_priv->sman, VIDEO_TYPE, 0,
105 fb->size >> SIS_MM_ALIGN_SHIFT);
106 #endif
107
108 if (ret) {
109 DRM_ERROR("VRAM memory manager initialisation error\n");
110 mutex_unlock(&dev->struct_mutex);
111 return ret;
112 }
113
114 dev_priv->vram_initialized = 1;
115 dev_priv->vram_offset = fb->offset;
116
117 mutex_unlock(&dev->struct_mutex);
118 DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size);
119
120 return 0;
121 }
122
123 static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file_priv,
124 void *data, int pool)
125 {
126 drm_sis_private_t *dev_priv = dev->dev_private;
127 drm_sis_mem_t *mem = data;
128 int retval = 0;
129 struct drm_memblock_item *item;
130
131 mutex_lock(&dev->struct_mutex);
132
133 if (0 == ((pool == 0) ? dev_priv->vram_initialized :
134 dev_priv->agp_initialized)) {
135 DRM_ERROR
136 ("Attempt to allocate from uninitialized memory manager.\n");
137 mutex_unlock(&dev->struct_mutex);
138 return -EINVAL;
139 }
140
141 mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
142 item = drm_sman_alloc(&dev_priv->sman, pool, mem->size, 0,
143 (unsigned long)file_priv);
144
145 mutex_unlock(&dev->struct_mutex);
146 if (item) {
147 mem->offset = ((pool == 0) ?
148 dev_priv->vram_offset : dev_priv->agp_offset) +
149 (item->mm->
150 offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
151 mem->free = item->user_hash.key;
152 mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
153 } else {
154 mem->offset = 0;
155 mem->size = 0;
156 mem->free = 0;
157 retval = -ENOMEM;
158 }
159
160 DRM_DEBUG("alloc %d, size = %d, offset = %d\n", pool, mem->size,
161 mem->offset);
162
163 return retval;
164 }
165
166 static int sis_drm_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
167 {
168 drm_sis_private_t *dev_priv = dev->dev_private;
169 drm_sis_mem_t *mem = data;
170 int ret;
171
172 mutex_lock(&dev->struct_mutex);
173 ret = drm_sman_free_key(&dev_priv->sman, mem->free);
174 mutex_unlock(&dev->struct_mutex);
175 DRM_DEBUG("free = 0x%lx\n", mem->free);
176
177 return ret;
178 }
179
180 static int sis_fb_alloc(struct drm_device *dev, void *data,
181 struct drm_file *file_priv)
182 {
183 return sis_drm_alloc(dev, file_priv, data, VIDEO_TYPE);
184 }
185
186 static int sis_ioctl_agp_init(struct drm_device *dev, void *data,
187 struct drm_file *file_priv)
188 {
189 drm_sis_private_t *dev_priv = dev->dev_private;
190 drm_sis_agp_t *agp = data;
191 int ret;
192 dev_priv = dev->dev_private;
193
194 mutex_lock(&dev->struct_mutex);
195 ret = drm_sman_set_range(&dev_priv->sman, AGP_TYPE, 0,
196 agp->size >> SIS_MM_ALIGN_SHIFT);
197
198 if (ret) {
199 DRM_ERROR("AGP memory manager initialisation error\n");
200 mutex_unlock(&dev->struct_mutex);
201 return ret;
202 }
203
204 dev_priv->agp_initialized = 1;
205 dev_priv->agp_offset = agp->offset;
206 mutex_unlock(&dev->struct_mutex);
207
208 DRM_DEBUG("offset = %u, size = %u\n", agp->offset, agp->size);
209 return 0;
210 }
211
212 static int sis_ioctl_agp_alloc(struct drm_device *dev, void *data,
213 struct drm_file *file_priv)
214 {
215
216 return sis_drm_alloc(dev, file_priv, data, AGP_TYPE);
217 }
218
219 static drm_local_map_t *sis_reg_init(struct drm_device *dev)
220 {
221 struct drm_map_list *entry;
222 drm_local_map_t *map;
223
224 list_for_each_entry(entry, &dev->maplist, head) {
225 map = entry->map;
226 if (!map)
227 continue;
228 if (map->type == _DRM_REGISTERS) {
229 return map;
230 }
231 }
232 return NULL;
233 }
234
235 int sis_idle(struct drm_device *dev)
236 {
237 drm_sis_private_t *dev_priv = dev->dev_private;
238 uint32_t idle_reg;
239 unsigned long end;
240 int i;
241
242 if (dev_priv->idle_fault)
243 return 0;
244
245 if (dev_priv->mmio == NULL) {
246 dev_priv->mmio = sis_reg_init(dev);
247 if (dev_priv->mmio == NULL) {
248 DRM_ERROR("Could not find register map.\n");
249 return 0;
250 }
251 }
252
253 /*
254 * Implement a device switch here if needed
255 */
256
257 if (dev_priv->chipset != SIS_CHIP_315)
258 return 0;
259
260 /*
261 * Timeout after 3 seconds. We cannot use DRM_WAIT_ON here
262 * because its polling frequency is too low.
263 */
264
265 end = jiffies + (DRM_HZ * 3);
266
267 for (i=0; i<4; ++i) {
268 do {
269 idle_reg = SIS_READ(0x85cc);
270 } while ( !time_after_eq(jiffies, end) &&
271 ((idle_reg & 0x80000000) != 0x80000000));
272 }
273
274 if (time_after_eq(jiffies, end)) {
275 DRM_ERROR("Graphics engine idle timeout. "
276 "Disabling idle check\n");
277 dev_priv->idle_fault = 1;
278 }
279
280 /*
281 * The caller never sees an error code. It gets trapped
282 * in libdrm.
283 */
284
285 return 0;
286 }
287
288
289 void sis_lastclose(struct drm_device *dev)
290 {
291 drm_sis_private_t *dev_priv = dev->dev_private;
292
293 if (!dev_priv)
294 return;
295
296 mutex_lock(&dev->struct_mutex);
297 drm_sman_cleanup(&dev_priv->sman);
298 dev_priv->vram_initialized = 0;
299 dev_priv->agp_initialized = 0;
300 dev_priv->mmio = NULL;
301 mutex_unlock(&dev->struct_mutex);
302 }
303
304 void sis_reclaim_buffers_locked(struct drm_device * dev,
305 struct drm_file *file_priv)
306 {
307 drm_sis_private_t *dev_priv = dev->dev_private;
308
309 mutex_lock(&dev->struct_mutex);
310 if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)file_priv)) {
311 mutex_unlock(&dev->struct_mutex);
312 return;
313 }
314
315 if (dev->driver->dma_quiescent) {
316 dev->driver->dma_quiescent(dev);
317 }
318
319 drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)file_priv);
320 mutex_unlock(&dev->struct_mutex);
321 return;
322 }
323
324 struct drm_ioctl_desc sis_ioctls[] = {
325 DRM_IOCTL_DEF(DRM_SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
326 DRM_IOCTL_DEF(DRM_SIS_FB_FREE, sis_drm_free, DRM_AUTH),
327 DRM_IOCTL_DEF(DRM_SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
328 DRM_IOCTL_DEF(DRM_SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
329 DRM_IOCTL_DEF(DRM_SIS_AGP_FREE, sis_drm_free, DRM_AUTH),
330 DRM_IOCTL_DEF(DRM_SIS_FB_INIT, sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
331 };
332
333 int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);
334
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