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>
35 #if defined(__linux__) && defined(CONFIG_FB_SIS)
36 #include <video/sisfb.h>
39 #define MAX_CONTEXT 100
46 set_t *sets[2]; /* 0 for video, 1 for AGP */
49 static sis_context_t global_ppriv[MAX_CONTEXT];
51 static int add_alloc_set(int context, int type, unsigned int val)
55 for (i = 0; i < MAX_CONTEXT; i++) {
56 if (global_ppriv[i].used && global_ppriv[i].context == context) {
57 retval = setAdd(global_ppriv[i].sets[type], val);
64 static int del_alloc_set(int context, int type, unsigned int val)
68 for (i = 0; i < MAX_CONTEXT; i++) {
69 if (global_ppriv[i].used && global_ppriv[i].context == context) {
70 retval = setDel(global_ppriv[i].sets[type], val);
77 /* fb management via fb device */
78 #if defined(__linux__) && defined(CONFIG_FB_SIS)
80 static int sis_fb_init(DRM_IOCTL_ARGS)
85 static int sis_fb_alloc(DRM_IOCTL_ARGS)
88 struct sis_memreq req;
89 drm_sis_mem_t __user *argp = (void __user *)data;
92 DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
98 fb.offset = req.offset;
100 if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
101 DRM_DEBUG("adding to allocation set fails\n");
102 sis_free(req.offset);
103 retval = DRM_ERR(EINVAL);
111 DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
113 DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, req.offset);
118 static int sis_fb_free(DRM_IOCTL_ARGS)
123 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *) data, sizeof(fb));
126 return DRM_ERR(EINVAL);
128 if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
129 retval = DRM_ERR(EINVAL);
130 sis_free((u32) fb.free);
132 DRM_DEBUG("free fb, offset = %lu\n", fb.free);
139 /* Called by the X Server to initialize the FB heap. Allocations will fail
140 * unless this is called. Offset is the beginning of the heap from the
141 * framebuffer offset (MaxXFBMem in XFree86).
143 * Memory layout according to Thomas Winischofer:
144 * |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
146 * X driver/sisfb HW- Command-
147 * framebuffer memory DRI heap Cursor queue
149 static int sis_fb_init(DRM_IOCTL_ARGS)
152 drm_sis_private_t *dev_priv = dev->dev_private;
155 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *) data, sizeof(fb));
157 if (dev_priv == NULL) {
158 dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
160 dev_priv = dev->dev_private;
161 if (dev_priv == NULL)
165 if (dev_priv->FBHeap != NULL)
166 return DRM_ERR(EINVAL);
168 dev_priv->FBHeap = mmInit(fb.offset, fb.size);
170 DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
175 static int sis_fb_alloc(DRM_IOCTL_ARGS)
178 drm_sis_private_t *dev_priv = dev->dev_private;
179 drm_sis_mem_t __user *argp = (void __user *)data;
184 if (dev_priv == NULL || dev_priv->FBHeap == NULL)
185 return DRM_ERR(EINVAL);
187 DRM_COPY_FROM_USER_IOCTL(fb, argp, sizeof(fb));
189 block = mmAllocMem(dev_priv->FBHeap, fb.size, 0, 0);
192 fb.offset = block->ofs;
193 fb.free = (unsigned long)block;
194 if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
195 DRM_DEBUG("adding to allocation set fails\n");
196 mmFreeMem((PMemBlock) fb.free);
197 retval = DRM_ERR(EINVAL);
205 DRM_COPY_TO_USER_IOCTL(argp, fb, sizeof(fb));
207 DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, fb.offset);
212 static int sis_fb_free(DRM_IOCTL_ARGS)
215 drm_sis_private_t *dev_priv = dev->dev_private;
218 if (dev_priv == NULL || dev_priv->FBHeap == NULL)
219 return DRM_ERR(EINVAL);
221 DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t __user *) data, sizeof(fb));
223 if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock) fb.free))
224 return DRM_ERR(EINVAL);
226 if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
227 return DRM_ERR(EINVAL);
228 mmFreeMem((PMemBlock) fb.free);
230 DRM_DEBUG("free fb, free = 0x%lx\n", fb.free);
237 /* agp memory management */
239 static int sis_ioctl_agp_init(DRM_IOCTL_ARGS)
242 drm_sis_private_t *dev_priv = dev->dev_private;
245 if (dev_priv == NULL) {
246 dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
248 dev_priv = dev->dev_private;
249 if (dev_priv == NULL)
253 if (dev_priv->AGPHeap != NULL)
254 return DRM_ERR(EINVAL);
256 DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t __user *) data,
259 dev_priv->AGPHeap = mmInit(agp.offset, agp.size);
261 DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
266 static int sis_ioctl_agp_alloc(DRM_IOCTL_ARGS)
269 drm_sis_private_t *dev_priv = dev->dev_private;
270 drm_sis_mem_t __user *argp = (void __user *)data;
275 if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
276 return DRM_ERR(EINVAL);
278 DRM_COPY_FROM_USER_IOCTL(agp, argp, sizeof(agp));
280 block = mmAllocMem(dev_priv->AGPHeap, agp.size, 0, 0);
283 agp.offset = block->ofs;
284 agp.free = (unsigned long)block;
285 if (!add_alloc_set(agp.context, AGP_TYPE, agp.free)) {
286 DRM_DEBUG("adding to allocation set fails\n");
287 mmFreeMem((PMemBlock) agp.free);
296 DRM_COPY_TO_USER_IOCTL(argp, agp, sizeof(agp));
298 DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset);
303 static int sis_ioctl_agp_free(DRM_IOCTL_ARGS)
306 drm_sis_private_t *dev_priv = dev->dev_private;
309 if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
310 return DRM_ERR(EINVAL);
312 DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_mem_t __user *) data,
315 if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock) agp.free))
316 return DRM_ERR(EINVAL);
318 mmFreeMem((PMemBlock) agp.free);
319 if (!del_alloc_set(agp.context, AGP_TYPE, agp.free))
320 return DRM_ERR(EINVAL);
322 DRM_DEBUG("free agp, free = 0x%lx\n", agp.free);
327 int sis_init_context(struct drm_device *dev, int context)
331 for (i = 0; i < MAX_CONTEXT; i++) {
332 if (global_ppriv[i].used &&
333 (global_ppriv[i].context == context))
337 if (i >= MAX_CONTEXT) {
338 for (i = 0; i < MAX_CONTEXT; i++) {
339 if (!global_ppriv[i].used) {
340 global_ppriv[i].context = context;
341 global_ppriv[i].used = 1;
342 global_ppriv[i].sets[0] = setInit();
343 global_ppriv[i].sets[1] = setInit();
344 DRM_DEBUG("init allocation set, socket=%d, "
345 "context = %d\n", i, context);
349 if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
350 (global_ppriv[i].sets[1] == NULL)) {
358 int sis_final_context(struct drm_device *dev, int context)
362 for (i = 0; i < MAX_CONTEXT; i++) {
363 if (global_ppriv[i].used &&
364 (global_ppriv[i].context == context))
368 if (i < MAX_CONTEXT) {
373 DRM_DEBUG("find socket %d, context = %d\n", i, context);
376 set = global_ppriv[i].sets[0];
377 retval = setFirst(set, &item);
379 DRM_DEBUG("free video memory 0x%x\n", item);
380 #if defined(__linux__) && defined(CONFIG_FB_SIS)
383 mmFreeMem((PMemBlock) item);
385 retval = setNext(set, &item);
390 set = global_ppriv[i].sets[1];
391 retval = setFirst(set, &item);
393 DRM_DEBUG("free agp memory 0x%x\n", item);
394 mmFreeMem((PMemBlock) item);
395 retval = setNext(set, &item);
399 global_ppriv[i].used = 0;
405 drm_ioctl_desc_t sis_ioctls[] = {
406 [DRM_IOCTL_NR(DRM_SIS_FB_ALLOC)] = {sis_fb_alloc, 1, 0},
407 [DRM_IOCTL_NR(DRM_SIS_FB_FREE)] = {sis_fb_free, 1, 0},
408 [DRM_IOCTL_NR(DRM_SIS_AGP_INIT)] = {sis_ioctl_agp_init, 1, 1},
409 [DRM_IOCTL_NR(DRM_SIS_AGP_ALLOC)] = {sis_ioctl_agp_alloc, 1, 0},
410 [DRM_IOCTL_NR(DRM_SIS_AGP_FREE)] = {sis_ioctl_agp_free, 1, 0},
411 [DRM_IOCTL_NR(DRM_SIS_FB_INIT)] = {sis_fb_init, 1, 1}
414 int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);