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 * $FreeBSD: head/sys/dev/drm/sis_mm.c 145132 2005-04-16 03:44:47Z anholt $
30 */
31
32#if defined(__linux__) && defined(CONFIG_FB_SIS)
33#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
34#include <video/sisfb.h>
35#else
36#include <linux/sisfb.h>
37#endif
38#endif
39#include "dev/drm/drmP.h"
40#include "dev/drm/sis_drm.h"
41#include "dev/drm/sis_drv.h"
42#include "dev/drm/sis_ds.h"
43
44#define MAX_CONTEXT 100
45#define VIDEO_TYPE 0
46#define AGP_TYPE 1
47
48typedef struct {
49 int used;
50 int context;
51 set_t *sets[2]; /* 0 for video, 1 for AGP */
52} sis_context_t;
53
54static sis_context_t global_ppriv[MAX_CONTEXT];
55
56static int add_alloc_set(int context, int type, unsigned int val)
57{
58 int i, retval = 0;
59
60 for (i = 0; i < MAX_CONTEXT; i++) {
61 if (global_ppriv[i].used && global_ppriv[i].context == context) {
62 retval = setAdd(global_ppriv[i].sets[type], val);
63 break;
64 }
65 }
66 return retval;
67}
68
69static int del_alloc_set(int context, int type, unsigned int val)
70{
71 int i, retval = 0;
72
73 for (i = 0; i < MAX_CONTEXT; i++) {
74 if (global_ppriv[i].used && global_ppriv[i].context == context) {
75 retval = setDel(global_ppriv[i].sets[type], val);
76 break;
77 }
78 }
79 return retval;
80}
81
82/* fb management via fb device */
83#if defined(__linux__) && defined(CONFIG_FB_SIS)
84
85static int sis_fb_init(DRM_IOCTL_ARGS)
86{
87 return 0;
88}
89
90static int sis_fb_alloc(DRM_IOCTL_ARGS)
91{
92 drm_sis_mem_t fb;
93 struct sis_memreq req;
94 drm_sis_mem_t __user *argp = (void __user *)data;
95 int retval = 0;
96
97 DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
98
99 req.size = fb.size;
100 sis_malloc(&req);
101 if (req.offset) {
102 /* TODO */
103 fb.offset = req.offset;
104 fb.free = req.offset;
105 if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
106 DRM_DEBUG("adding to allocation set fails\n");
107 sis_free(req.offset);
108 retval = DRM_ERR(EINVAL);
109 }
110 } else {
111 fb.offset = 0;
112 fb.size = 0;
113 fb.free = 0;
114 }
115
116 DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
117
118 DRM_DEBUG("alloc fb, size = %d, offset = %ld\n", fb.size, req.offset);
119
120 return retval;
121}
122
123static int sis_fb_free(DRM_IOCTL_ARGS)
124{
125 drm_sis_mem_t fb;
126 int retval = 0;
127
128 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *) data, sizeof(fb));
129
130 if (!fb.free)
131 return DRM_ERR(EINVAL);
132
133 if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
134 retval = DRM_ERR(EINVAL);
135 sis_free(fb.free);
136
137 DRM_DEBUG("free fb, offset = 0x%lx\n", fb.free);
138
139 return retval;
140}
141
142#else
143
144/* Called by the X Server to initialize the FB heap. Allocations will fail
145 * unless this is called. Offset is the beginning of the heap from the
146 * framebuffer offset (MaxXFBMem in XFree86).
147 *
148 * Memory layout according to Thomas Winischofer:
149 * |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
150 *
151 * X driver/sisfb HW- Command-
152 * framebuffer memory DRI heap Cursor queue
153 */
154static int sis_fb_init(DRM_IOCTL_ARGS)
155{
156 DRM_DEVICE;
157 drm_sis_private_t *dev_priv = dev->dev_private;
158 drm_sis_fb_t fb;
159
160 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *) data, sizeof(fb));
161
162 if (dev_priv == NULL) {
163 dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
164 DRM_MEM_DRIVER);
165 dev_priv = dev->dev_private;
166 if (dev_priv == NULL)
167 return ENOMEM;
168 }
169
170 if (dev_priv->FBHeap != NULL)
171 return DRM_ERR(EINVAL);
172
173 dev_priv->FBHeap = mmInit(fb.offset, fb.size);
174
175 DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
176
177 return 0;
178}
179
180static int sis_fb_alloc(DRM_IOCTL_ARGS)
181{
182 DRM_DEVICE;
183 drm_sis_private_t *dev_priv = dev->dev_private;
184 drm_sis_mem_t __user *argp = (void __user *)data;
185 drm_sis_mem_t fb;
186 PMemBlock block;
187 int retval = 0;
188
189 if (dev_priv == NULL || dev_priv->FBHeap == NULL)
190 return DRM_ERR(EINVAL);
191
192 DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
193
194 block = mmAllocMem(dev_priv->FBHeap, fb.size, 0, 0);
195 if (block) {
196 /* TODO */
197 fb.offset = block->ofs;
198 fb.free = (unsigned long)block;
199 if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
200 DRM_DEBUG("adding to allocation set fails\n");
201 mmFreeMem((PMemBlock) fb.free);
202 retval = DRM_ERR(EINVAL);
203 }
204 } else {
205 fb.offset = 0;
206 fb.size = 0;
207 fb.free = 0;
208 }
209
210 DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
211
212 DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, fb.offset);
213
214 return retval;
215}
216
217static int sis_fb_free(DRM_IOCTL_ARGS)
218{
219 DRM_DEVICE;
220 drm_sis_private_t *dev_priv = dev->dev_private;
221 drm_sis_mem_t fb;
222
223 if (dev_priv == NULL || dev_priv->FBHeap == NULL)
224 return DRM_ERR(EINVAL);
225
226 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *) data, sizeof(fb));
227
228 if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock) fb.free))
229 return DRM_ERR(EINVAL);
230
231 if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
232 return DRM_ERR(EINVAL);
233 mmFreeMem((PMemBlock) fb.free);
234
235 DRM_DEBUG("free fb, free = 0x%lx\n", fb.free);
236
237 return 0;
238}
239
240#endif
241
242/* agp memory management */
243
244static int sis_ioctl_agp_init(DRM_IOCTL_ARGS)
245{
246 DRM_DEVICE;
247 drm_sis_private_t *dev_priv = dev->dev_private;
248 drm_sis_agp_t agp;
249
250 if (dev_priv == NULL) {
251 dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
252 DRM_MEM_DRIVER);
253 dev_priv = dev->dev_private;
254 if (dev_priv == NULL)
255 return ENOMEM;
256 }
257
258 if (dev_priv->AGPHeap != NULL)
259 return DRM_ERR(EINVAL);
260
261 DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t __user *) data,
262 sizeof(agp));
263
264 dev_priv->AGPHeap = mmInit(agp.offset, agp.size);
265
266 DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
267
268 return 0;
269}
270
271static int sis_ioctl_agp_alloc(DRM_IOCTL_ARGS)
272{
273 DRM_DEVICE;
274 drm_sis_private_t *dev_priv = dev->dev_private;
275 drm_sis_mem_t __user *argp = (drm_sis_mem_t __user *)data;
276 drm_sis_mem_t agp;
277 PMemBlock block;
278 int retval = 0;
279
280 if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
281 return DRM_ERR(EINVAL);
282
283 DRM_COPY_FROM_USER_IOCTL(agp, argp, sizeof(agp));
284
285 block = mmAllocMem(dev_priv->AGPHeap, agp.size, 0, 0);
286 if (block) {
287 /* TODO */
288 agp.offset = block->ofs;
289 agp.free = (unsigned long)block;
290 if (!add_alloc_set(agp.context, AGP_TYPE, agp.free)) {
291 DRM_DEBUG("adding to allocation set fails\n");
292 mmFreeMem((PMemBlock) agp.free);
293 retval = -1;
294 }
295 } else {
296 agp.offset = 0;
297 agp.size = 0;
298 agp.free = 0;
299 }
300
301 DRM_COPY_TO_USER_IOCTL(argp, agp, sizeof(agp));
302
303 DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset);
304
305 return retval;
306}
307
308static int sis_ioctl_agp_free(DRM_IOCTL_ARGS)
309{
310 DRM_DEVICE;
311 drm_sis_private_t *dev_priv = dev->dev_private;
312 drm_sis_mem_t agp;
313
314 if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
315 return DRM_ERR(EINVAL);
316
317 DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_mem_t __user *) data,
318 sizeof(agp));
319
320 if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock) agp.free))
321 return DRM_ERR(EINVAL);
322
323 mmFreeMem((PMemBlock) agp.free);
324 if (!del_alloc_set(agp.context, AGP_TYPE, agp.free))
325 return DRM_ERR(EINVAL);
326
327 DRM_DEBUG("free agp, free = 0x%lx\n", agp.free);
328
329 return 0;
330}
331
332int sis_init_context(struct drm_device *dev, int context)
333{
334 int i;
335
336 for (i = 0; i < MAX_CONTEXT; i++) {
337 if (global_ppriv[i].used &&
338 (global_ppriv[i].context == context))
339 break;
340 }
341
342 if (i >= MAX_CONTEXT) {
343 for (i = 0; i < MAX_CONTEXT; i++) {
344 if (!global_ppriv[i].used) {
345 global_ppriv[i].context = context;
346 global_ppriv[i].used = 1;
347 global_ppriv[i].sets[0] = setInit();
348 global_ppriv[i].sets[1] = setInit();
349 DRM_DEBUG("init allocation set, socket=%d, "
350 "context = %d\n", i, context);
351 break;
352 }
353 }
354 if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
355 (global_ppriv[i].sets[1] == NULL)) {
356 return 0;
357 }
358 }
359
360 return 1;
361}
362
363int sis_final_context(struct drm_device *dev, int context)
364{
365 int i;
366
367 for (i = 0; i < MAX_CONTEXT; i++) {
368 if (global_ppriv[i].used &&
369 (global_ppriv[i].context == context))
370 break;
371 }
372
373 if (i < MAX_CONTEXT) {
374 set_t *set;
375 ITEM_TYPE item;
376 int retval;
377
378 DRM_DEBUG("find socket %d, context = %d\n", i, context);
379
380 /* Video Memory */
381 set = global_ppriv[i].sets[0];
382 retval = setFirst(set, &item);
383 while (retval) {
384 DRM_DEBUG("free video memory 0x%lx\n", item);
385#if defined(__linux__) && defined(CONFIG_FB_SIS)
386 sis_free(item);
387#else
388 mmFreeMem((PMemBlock) item);
389#endif
390 retval = setNext(set, &item);
391 }
392 setDestroy(set);
393
394 /* AGP Memory */
395 set = global_ppriv[i].sets[1];
396 retval = setFirst(set, &item);
397 while (retval) {
398 DRM_DEBUG("free agp memory 0x%lx\n", item);
399 mmFreeMem((PMemBlock) item);
400 retval = setNext(set, &item);
401 }
402 setDestroy(set);
403
404 global_ppriv[i].used = 0;
405 }
406
407 return 1;
408}
409
410drm_ioctl_desc_t sis_ioctls[] = {
411 [DRM_IOCTL_NR(DRM_SIS_FB_ALLOC)] = {sis_fb_alloc, 1, 0},
412 [DRM_IOCTL_NR(DRM_SIS_FB_FREE)] = {sis_fb_free, 1, 0},
413 [DRM_IOCTL_NR(DRM_SIS_AGP_INIT)] = {sis_ioctl_agp_init, 1, 1},
414 [DRM_IOCTL_NR(DRM_SIS_AGP_ALLOC)] = {sis_ioctl_agp_alloc, 1, 0},
415 [DRM_IOCTL_NR(DRM_SIS_AGP_FREE)] = {sis_ioctl_agp_free, 1, 0},
416 [DRM_IOCTL_NR(DRM_SIS_FB_INIT)] = {sis_fb_init, 1, 1}
417};
418
419int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);