1 /* sis_mm.c -- Private header for Direct Rendering Manager -*- linux-c -*-
2 * Created: Mon Jan 4 10:05:05 1999 by sclin@sis.com.tw
3 *
4 * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
5 * All rights reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the next
15 * paragraph) shall be included in all copies or substantial portions of the
16 * 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 NONINFRINGEMENT. IN NO EVENT SHALL
21 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
25 *
26 * Authors:
27 * Sung-Ching Lin <sclin@sis.com.tw>
28 *
29 */
30
31 #if defined(__linux__) && defined(CONFIG_FB_SIS)
32 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
33 #include <video/sisfb.h>
34 #else
35 #include <linux/sisfb.h>
36 #endif
37 #endif
38 #include "drmP.h"
39 #include "sis_drm.h"
40 #include "sis_drv.h"
41 #include "sis_ds.h"
42
43 #define MAX_CONTEXT 100
44 #define VIDEO_TYPE 0
45 #define AGP_TYPE 1
46
47 typedef struct {
48 int used;
49 int context;
50 set_t *sets[2]; /* 0 for video, 1 for AGP */
51 } sis_context_t;
52
53 static sis_context_t global_ppriv[MAX_CONTEXT];
54
add_alloc_set(int context,int type,unsigned int val)55 static int add_alloc_set(int context, int type, unsigned int val)
56 {
57 int i, retval = 0;
58
59 for (i = 0; i < MAX_CONTEXT; i++) {
60 if (global_ppriv[i].used && global_ppriv[i].context == context) {
61 retval = setAdd(global_ppriv[i].sets[type], val);
62 break;
63 }
64 }
65 return retval;
66 }
67
del_alloc_set(int context,int type,unsigned int val)68 static int del_alloc_set(int context, int type, unsigned int val)
69 {
70 int i, retval = 0;
71
72 for (i = 0; i < MAX_CONTEXT; i++) {
73 if (global_ppriv[i].used && global_ppriv[i].context == context) {
74 retval = setDel(global_ppriv[i].sets[type], val);
75 break;
76 }
77 }
78 return retval;
79 }
80
81 /* fb management via fb device */
82 #if defined(__linux__) && defined(CONFIG_FB_SIS)
83
sis_fb_init(struct drm_device * dev,void * data,struct drm_file * file_priv)84 static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
85 {
86 return 0;
87 }
88
sis_fb_alloc(struct drm_device * dev,void * data,struct drm_file * file_priv)89 static int sis_fb_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
90 {
91 drm_sis_mem_t *fb = data;
92 struct sis_memreq req;
93 int retval = 0;
94
95 req.size = fb->size;
96 sis_malloc(&req);
97 if (req.offset) {
98 /* TODO */
99 fb->offset = req.offset;
100 fb->free = req.offset;
101 if (!add_alloc_set(fb->context, VIDEO_TYPE, fb->free)) {
102 DRM_DEBUG("adding to allocation set fails\n");
103 sis_free(req.offset);
104 retval = -EINVAL;
105 }
106 } else {
107 fb->offset = 0;
108 fb->size = 0;
109 fb->free = 0;
110 }
111
112 DRM_DEBUG("alloc fb, size = %d, offset = %ld\n", fb->size, req.offset);
113
114 return retval;
115 }
116
sis_fb_free(struct drm_device * dev,void * data,struct drm_file * file_priv)117 static int sis_fb_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
118 {
119 drm_sis_mem_t fb;
120 int retval = 0;
121
122 if (!fb->free)
123 return -EINVAL;
124
125 if (!del_alloc_set(fb->context, VIDEO_TYPE, fb->free))
126 retval = -EINVAL;
127 sis_free(fb->free);
128
129 DRM_DEBUG("free fb, offset = 0x%lx\n", fb->free);
130
131 return retval;
132 }
133
134 #else
135
136 /* Called by the X Server to initialize the FB heap. Allocations will fail
137 * unless this is called. Offset is the beginning of the heap from the
138 * framebuffer offset (MaxXFBMem in XFree86).
139 *
140 * Memory layout according to Thomas Winischofer:
141 * |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
142 *
143 * X driver/sisfb HW- Command-
144 * framebuffer memory DRI heap Cursor queue
145 */
sis_fb_init(struct drm_device * dev,void * data,struct drm_file * file_priv)146 static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
147 {
148 drm_sis_private_t *dev_priv = dev->dev_private;
149 drm_sis_fb_t *fb = data;
150
151 if (dev_priv == NULL) {
152 dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
153 DRM_MEM_DRIVER);
154 dev_priv = dev->dev_private;
155 if (dev_priv == NULL)
156 return ENOMEM;
157 }
158
159 if (dev_priv->FBHeap != NULL)
160 return -EINVAL;
161
162 dev_priv->FBHeap = mmInit(fb->offset, fb->size);
163
164 DRM_DEBUG("offset = %u, size = %u", fb->offset, fb->size);
165
166 return 0;
167 }
168
sis_fb_alloc(struct drm_device * dev,void * data,struct drm_file * file_priv)169 static int sis_fb_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
170 {
171 drm_sis_private_t *dev_priv = dev->dev_private;
172 drm_sis_mem_t *fb = data;
173 PMemBlock block;
174 int retval = 0;
175
176 if (dev_priv == NULL || dev_priv->FBHeap == NULL)
177 return -EINVAL;
178
179 block = mmAllocMem(dev_priv->FBHeap, fb->size, 0, 0);
180 if (block) {
181 /* TODO */
182 fb->offset = block->ofs;
183 fb->free = (unsigned long)block;
184 if (!add_alloc_set(fb->context, VIDEO_TYPE, fb->free)) {
185 DRM_DEBUG("adding to allocation set fails\n");
186 mmFreeMem((PMemBlock) fb->free);
187 retval = -EINVAL;
188 }
189 } else {
190 fb->offset = 0;
191 fb->size = 0;
192 fb->free = 0;
193 }
194
195 DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb->size, fb->offset);
196
197 return retval;
198 }
199
sis_fb_free(struct drm_device * dev,void * data,struct drm_file * file_priv)200 static int sis_fb_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
201 {
202 drm_sis_private_t *dev_priv = dev->dev_private;
203 drm_sis_mem_t *fb = data;
204
205 if (dev_priv == NULL || dev_priv->FBHeap == NULL)
206 return -EINVAL;
207
208 if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock) fb->free))
209 return -EINVAL;
210
211 if (!del_alloc_set(fb->context, VIDEO_TYPE, fb->free))
212 return -EINVAL;
213 mmFreeMem((PMemBlock) fb->free);
214
215 DRM_DEBUG("free fb, free = 0x%lx\n", fb->free);
216
217 return 0;
218 }
219
220 #endif
221
222 /* agp memory management */
223
sis_ioctl_agp_init(struct drm_device * dev,void * data,struct drm_file * file_priv)224 static int sis_ioctl_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
225 {
226 drm_sis_private_t *dev_priv = dev->dev_private;
227 drm_sis_agp_t *agp = data;
228
229 if (dev_priv == NULL) {
230 dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
231 DRM_MEM_DRIVER);
232 dev_priv = dev->dev_private;
233 if (dev_priv == NULL)
234 return ENOMEM;
235 }
236
237 if (dev_priv->AGPHeap != NULL)
238 return -EINVAL;
239
240 dev_priv->AGPHeap = mmInit(agp->offset, agp->size);
241
242 DRM_DEBUG("offset = %u, size = %u", agp->offset, agp->size);
243
244 return 0;
245 }
246
sis_ioctl_agp_alloc(struct drm_device * dev,void * data,struct drm_file * file_priv)247 static int sis_ioctl_agp_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
248 {
249 drm_sis_private_t *dev_priv = dev->dev_private;
250 drm_sis_mem_t *agp = data;
251 PMemBlock block;
252 int retval = 0;
253
254 if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
255 return -EINVAL;
256
257 block = mmAllocMem(dev_priv->AGPHeap, agp->size, 0, 0);
258 if (block) {
259 /* TODO */
260 agp->offset = block->ofs;
261 agp->free = (unsigned long)block;
262 if (!add_alloc_set(agp->context, AGP_TYPE, agp->free)) {
263 DRM_DEBUG("adding to allocation set fails\n");
264 mmFreeMem((PMemBlock) agp->free);
265 retval = -1;
266 }
267 } else {
268 agp->offset = 0;
269 agp->size = 0;
270 agp->free = 0;
271 }
272
273 DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp->size,
274 agp->offset);
275
276 return retval;
277 }
278
sis_ioctl_agp_free(struct drm_device * dev,void * data,struct drm_file * file_priv)279 static int sis_ioctl_agp_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
280 {
281 drm_sis_private_t *dev_priv = dev->dev_private;
282 drm_sis_mem_t *agp = data;
283
284 if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
285 return -EINVAL;
286
287 if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock) agp->free))
288 return -EINVAL;
289
290 mmFreeMem((PMemBlock) agp->free);
291 if (!del_alloc_set(agp->context, AGP_TYPE, agp->free))
292 return -EINVAL;
293
294 DRM_DEBUG("free agp, free = 0x%lx\n", agp->free);
295
296 return 0;
297 }
298
sis_init_context(struct drm_device * dev,int context)299 int sis_init_context(struct drm_device *dev, int context)
300 {
301 int i;
302
303 for (i = 0; i < MAX_CONTEXT; i++) {
304 if (global_ppriv[i].used &&
305 (global_ppriv[i].context == context))
306 break;
307 }
308
309 if (i >= MAX_CONTEXT) {
310 for (i = 0; i < MAX_CONTEXT; i++) {
311 if (!global_ppriv[i].used) {
312 global_ppriv[i].context = context;
313 global_ppriv[i].used = 1;
314 global_ppriv[i].sets[0] = setInit();
315 global_ppriv[i].sets[1] = setInit();
316 DRM_DEBUG("init allocation set, socket=%d, "
317 "context = %d\n", i, context);
318 break;
319 }
320 }
321 if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
322 (global_ppriv[i].sets[1] == NULL)) {
323 return 0;
324 }
325 }
326
327 return 1;
328 }
329
sis_final_context(struct drm_device * dev,int context)330 int sis_final_context(struct drm_device *dev, int context)
331 {
332 int i;
333
334 for (i = 0; i < MAX_CONTEXT; i++) {
335 if (global_ppriv[i].used &&
336 (global_ppriv[i].context == context))
337 break;
338 }
339
340 if (i < MAX_CONTEXT) {
341 set_t *set;
342 ITEM_TYPE item;
343 int retval;
344
345 DRM_DEBUG("find socket %d, context = %d\n", i, context);
346
347 /* Video Memory */
348 set = global_ppriv[i].sets[0];
349 retval = setFirst(set, &item);
350 while (retval) {
351 DRM_DEBUG("free video memory 0x%lx\n", item);
352 #if defined(__linux__) && defined(CONFIG_FB_SIS)
353 sis_free(item);
354 #else
355 mmFreeMem((PMemBlock) item);
356 #endif
357 retval = setNext(set, &item);
358 }
359 setDestroy(set);
360
361 /* AGP Memory */
362 set = global_ppriv[i].sets[1];
363 retval = setFirst(set, &item);
364 while (retval) {
365 DRM_DEBUG("free agp memory 0x%lx\n", item);
366 mmFreeMem((PMemBlock) item);
367 retval = setNext(set, &item);
368 }
369 setDestroy(set);
370
371 global_ppriv[i].used = 0;
372 }
373
374 return 1;
375 }
376
377 drm_ioctl_desc_t sis_ioctls[] = {
378 DRM_IOCTL_DEF(DRM_SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
379 DRM_IOCTL_DEF(DRM_SIS_FB_FREE, sis_fb_free, DRM_AUTH),
380 DRM_IOCTL_DEF(DRM_SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
381 DRM_IOCTL_DEF(DRM_SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
382 DRM_IOCTL_DEF(DRM_SIS_AGP_FREE, sis_ioctl_agp_free, DRM_AUTH),
383 DRM_IOCTL_DEF(DRM_SIS_FB_INIT, sis_fb_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY)
384 };
385
386 int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);
387