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
4 * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
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:
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
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.
27 * Sung-Ching Lin <sclin@sis.com.tw>
36 #if defined(__linux__) && defined(CONFIG_FB_SIS)
37 #include <video/sisfb.h>
40 #define MAX_CONTEXT 100
47 set_t *sets[2]; /* 0 for video, 1 for AGP */
50 static sis_context_t global_ppriv[MAX_CONTEXT];
53 static int add_alloc_set(int context, int type, unsigned int val)
57 for (i = 0; i < MAX_CONTEXT; i++) {
58 if (global_ppriv[i].used && global_ppriv[i].context == context)
60 retval = setAdd(global_ppriv[i].sets[type], val);
67 static int del_alloc_set(int context, int type, unsigned int val)
71 for (i = 0; i < MAX_CONTEXT; i++) {
72 if (global_ppriv[i].used && global_ppriv[i].context == context)
74 retval = setDel(global_ppriv[i].sets[type], val);
81 /* fb management via fb device */
82 #if defined(__linux__) && defined(CONFIG_FB_SIS)
84 int sis_fb_init( DRM_IOCTL_ARGS )
89 int sis_fb_alloc( DRM_IOCTL_ARGS )
92 struct sis_memreq req;
93 drm_sis_mem_t __user *argp = (void __user *)data;
96 DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
102 fb.offset = req.offset;
103 fb.free = req.offset;
104 if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
105 DRM_DEBUG("adding to allocation set fails\n");
106 sis_free(req.offset);
107 retval = DRM_ERR(EINVAL);
115 DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
117 DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, req.offset);
122 int sis_fb_free( DRM_IOCTL_ARGS )
127 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *)data, sizeof(fb));
130 return DRM_ERR(EINVAL);
132 if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
133 retval = DRM_ERR(EINVAL);
134 sis_free((u32)fb.free);
136 DRM_DEBUG("free fb, offset = %lu\n", fb.free);
143 /* Called by the X Server to initialize the FB heap. Allocations will fail
144 * unless this is called. Offset is the beginning of the heap from the
145 * framebuffer offset (MaxXFBMem in XFree86).
147 * Memory layout according to Thomas Winischofer:
148 * |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
150 * X driver/sisfb HW- Command-
151 * framebuffer memory DRI heap Cursor queue
153 int sis_fb_init( DRM_IOCTL_ARGS )
156 drm_sis_private_t *dev_priv = dev->dev_private;
159 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *)data, sizeof(fb));
161 if (dev_priv == NULL) {
162 dev->dev_private = DRM(calloc)(1, sizeof(drm_sis_private_t),
164 dev_priv = dev->dev_private;
165 if (dev_priv == NULL)
169 if (dev_priv->FBHeap != NULL)
170 return DRM_ERR(EINVAL);
172 dev_priv->FBHeap = mmInit(fb.offset, fb.size);
174 DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
179 int sis_fb_alloc( DRM_IOCTL_ARGS )
182 drm_sis_private_t *dev_priv = dev->dev_private;
183 drm_sis_mem_t __user *argp = (void __user *)data;
188 if (dev_priv == NULL || dev_priv->FBHeap == NULL)
189 return DRM_ERR(EINVAL);
191 DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
193 block = mmAllocMem(dev_priv->FBHeap, fb.size, 0, 0);
196 fb.offset = block->ofs;
197 fb.free = (unsigned long)block;
198 if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
199 DRM_DEBUG("adding to allocation set fails\n");
200 mmFreeMem((PMemBlock)fb.free);
201 retval = DRM_ERR(EINVAL);
209 DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
211 DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, fb.offset);
216 int sis_fb_free( DRM_IOCTL_ARGS )
219 drm_sis_private_t *dev_priv = dev->dev_private;
222 if (dev_priv == NULL || dev_priv->FBHeap == NULL)
223 return DRM_ERR(EINVAL);
225 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *)data, sizeof(fb));
227 if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock)fb.free))
228 return DRM_ERR(EINVAL);
230 if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
231 return DRM_ERR(EINVAL);
232 mmFreeMem((PMemBlock)fb.free);
234 DRM_DEBUG("free fb, free = 0x%lx\n", fb.free);
241 /* agp memory management */
243 int sis_ioctl_agp_init( DRM_IOCTL_ARGS )
246 drm_sis_private_t *dev_priv = dev->dev_private;
249 if (dev_priv == NULL) {
250 dev->dev_private = DRM(calloc)(1, sizeof(drm_sis_private_t),
252 dev_priv = dev->dev_private;
253 if (dev_priv == NULL)
257 if (dev_priv->AGPHeap != NULL)
258 return DRM_ERR(EINVAL);
260 DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t __user *)data, sizeof(agp));
262 dev_priv->AGPHeap = mmInit(agp.offset, agp.size);
264 DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
269 int sis_ioctl_agp_alloc( DRM_IOCTL_ARGS )
272 drm_sis_private_t *dev_priv = dev->dev_private;
273 drm_sis_mem_t __user *argp = (void __user *)data;
278 if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
279 return DRM_ERR(EINVAL);
281 DRM_COPY_FROM_USER_IOCTL(agp, argp, sizeof(agp));
283 block = mmAllocMem(dev_priv->AGPHeap, agp.size, 0, 0);
286 agp.offset = block->ofs;
287 agp.free = (unsigned long)block;
288 if (!add_alloc_set(agp.context, AGP_TYPE, agp.free)) {
289 DRM_DEBUG("adding to allocation set fails\n");
290 mmFreeMem((PMemBlock)agp.free);
299 DRM_COPY_TO_USER_IOCTL(argp, agp, sizeof(agp));
301 DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset);
306 int sis_ioctl_agp_free( DRM_IOCTL_ARGS )
309 drm_sis_private_t *dev_priv = dev->dev_private;
312 if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
313 return DRM_ERR(EINVAL);
315 DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_mem_t __user *)data, sizeof(agp));
317 if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock)agp.free))
318 return DRM_ERR(EINVAL);
320 mmFreeMem((PMemBlock)agp.free);
321 if (!del_alloc_set(agp.context, AGP_TYPE, agp.free))
322 return DRM_ERR(EINVAL);
324 DRM_DEBUG("free agp, free = 0x%lx\n", agp.free);
329 int sis_init_context(struct drm_device *dev, int context)
333 for (i = 0; i < MAX_CONTEXT ; i++) {
334 if (global_ppriv[i].used &&
335 (global_ppriv[i].context == context))
339 if (i >= MAX_CONTEXT) {
340 for (i = 0; i < MAX_CONTEXT ; i++) {
341 if (!global_ppriv[i].used) {
342 global_ppriv[i].context = context;
343 global_ppriv[i].used = 1;
344 global_ppriv[i].sets[0] = setInit();
345 global_ppriv[i].sets[1] = setInit();
346 DRM_DEBUG("init allocation set, socket=%d, "
347 "context = %d\n", i, context);
351 if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
352 (global_ppriv[i].sets[1] == NULL))
361 int sis_final_context(struct drm_device *dev, int context)
365 for (i=0; i<MAX_CONTEXT; i++) {
366 if (global_ppriv[i].used &&
367 (global_ppriv[i].context == context))
371 if (i < MAX_CONTEXT) {
376 DRM_DEBUG("find socket %d, context = %d\n", i, context);
379 set = global_ppriv[i].sets[0];
380 retval = setFirst(set, &item);
382 DRM_DEBUG("free video memory 0x%x\n", item);
383 #if defined(__linux__) && defined(CONFIG_FB_SIS)
386 mmFreeMem((PMemBlock)item);
388 retval = setNext(set, &item);
393 set = global_ppriv[i].sets[1];
394 retval = setFirst(set, &item);
396 DRM_DEBUG("free agp memory 0x%x\n", item);
397 mmFreeMem((PMemBlock)item);
398 retval = setNext(set, &item);
402 global_ppriv[i].used = 0;
408 void DRM(driver_register_fns)(drm_device_t *dev)
410 dev->driver_features = DRIVER_USE_AGP | DRIVER_USE_MTRR;
411 dev->fn_tbl.context_ctor = sis_init_context;
412 dev->fn_tbl.context_dtor = sis_final_context;