sys/dev/drm/sis_mm.c

   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  * $DragonFly: src/sys/dev/drm/sis_mm.c,v 1.1 2008/04/05 18:12:29 hasso Exp $
  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 "drmP.h"
  40 #include "sis_drm.h"
  41 #include "sis_drv.h"
  42 #include "sis_ds.h"
  43
  44 #define MAX_CONTEXT 100
  45 #define VIDEO_TYPE 0
  46 #define AGP_TYPE 1
  47
  48 typedef struct {
  49         int used;
  50         int context;
  51         set_t *sets[2];         /* 0 for video, 1 for AGP */
  52 } sis_context_t;
  53
  54 static sis_context_t global_ppriv[MAX_CONTEXT];
  55
  56 static 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
  69 static 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
  85 static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
  86 {
  87         return 0;
  88 }
  89
  90 static int sis_fb_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
  91 {
  92         drm_sis_mem_t *fb = data;
  93         struct sis_memreq req;
  94         int retval = 0;
  95
  96         req.size = fb->size;
  97         sis_malloc(&req);
  98         if (req.offset) {
  99                 /* TODO */
 100                 fb->offset = req.offset;
 101                 fb->free = req.offset;
 102                 if (!add_alloc_set(fb->context, VIDEO_TYPE, fb->free)) {
 103                         DRM_DEBUG("adding to allocation set fails\n");
 104                         sis_free(req.offset);
 105                         retval = -EINVAL;
 106                 }
 107         } else {
 108                 fb->offset = 0;
 109                 fb->size = 0;
 110                 fb->free = 0;
 111         }
 112
 113         DRM_DEBUG("alloc fb, size = %d, offset = %ld\n", fb->size, req.offset);
 114
 115         return retval;
 116 }
 117
 118 static int sis_fb_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
 119 {
 120         drm_sis_mem_t fb;
 121         int retval = 0;
 122
 123         if (!fb->free)
 124                 return -EINVAL;
 125
 126         if (!del_alloc_set(fb->context, VIDEO_TYPE, fb->free))
 127                 retval = -EINVAL;
 128         sis_free(fb->free);
 129
 130         DRM_DEBUG("free fb, offset = 0x%lx\n", fb->free);
 131
 132         return retval;
 133 }
 134
 135 #else
 136
 137 /* Called by the X Server to initialize the FB heap.  Allocations will fail
 138  * unless this is called.  Offset is the beginning of the heap from the
 139  * framebuffer offset (MaxXFBMem in XFree86).
 140  *
 141  * Memory layout according to Thomas Winischofer:
 142  * |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
 143  *
 144  *    X driver/sisfb                                  HW-   Command-
 145  *  framebuffer memory           DRI heap           Cursor   queue
 146  */
 147 static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
 148 {
 149         drm_sis_private_t *dev_priv = dev->dev_private;
 150         drm_sis_fb_t *fb = data;
 151
 152         if (dev_priv == NULL) {
 153                 dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
 154                                               DRM_MEM_DRIVER);
 155                 dev_priv = dev->dev_private;
 156                 if (dev_priv == NULL)
 157                         return ENOMEM;
 158         }
 159
 160         if (dev_priv->FBHeap != NULL)
 161                 return -EINVAL;
 162
 163         dev_priv->FBHeap = mmInit(fb->offset, fb->size);
 164
 165         DRM_DEBUG("offset = %u, size = %u", fb->offset, fb->size);
 166
 167         return 0;
 168 }
 169
 170 static int sis_fb_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
 171 {
 172         drm_sis_private_t *dev_priv = dev->dev_private;
 173         drm_sis_mem_t *fb = data;
 174         PMemBlock block;
 175         int retval = 0;
 176
 177         if (dev_priv == NULL || dev_priv->FBHeap == NULL)
 178                 return -EINVAL;
 179
 180         block = mmAllocMem(dev_priv->FBHeap, fb->size, 0, 0);
 181         if (block) {
 182                 /* TODO */
 183                 fb->offset = block->ofs;
 184                 fb->free = (unsigned long)block;
 185                 if (!add_alloc_set(fb->context, VIDEO_TYPE, fb->free)) {
 186                         DRM_DEBUG("adding to allocation set fails\n");
 187                         mmFreeMem((PMemBlock) fb->free);
 188                         retval = -EINVAL;
 189                 }
 190         } else {
 191                 fb->offset = 0;
 192                 fb->size = 0;
 193                 fb->free = 0;
 194         }
 195
 196         DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb->size, fb->offset);
 197
 198         return retval;
 199 }
 200
 201 static int sis_fb_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
 202 {
 203         drm_sis_private_t *dev_priv = dev->dev_private;
 204         drm_sis_mem_t *fb = data;
 205
 206         if (dev_priv == NULL || dev_priv->FBHeap == NULL)
 207                 return -EINVAL;
 208
 209         if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock) fb->free))
 210                 return -EINVAL;
 211
 212         if (!del_alloc_set(fb->context, VIDEO_TYPE, fb->free))
 213                 return -EINVAL;
 214         mmFreeMem((PMemBlock) fb->free);
 215
 216         DRM_DEBUG("free fb, free = 0x%lx\n", fb->free);
 217
 218         return 0;
 219 }
 220
 221 #endif
 222
 223 /* agp memory management */
 224
 225 static int sis_ioctl_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
 226 {
 227         drm_sis_private_t *dev_priv = dev->dev_private;
 228         drm_sis_agp_t *agp = data;
 229
 230         if (dev_priv == NULL) {
 231                 dev->dev_private = drm_calloc(1, sizeof(drm_sis_private_t),
 232                                               DRM_MEM_DRIVER);
 233                 dev_priv = dev->dev_private;
 234                 if (dev_priv == NULL)
 235                         return ENOMEM;
 236         }
 237
 238         if (dev_priv->AGPHeap != NULL)
 239                 return -EINVAL;
 240
 241         dev_priv->AGPHeap = mmInit(agp->offset, agp->size);
 242
 243         DRM_DEBUG("offset = %u, size = %u", agp->offset, agp->size);
 244
 245         return 0;
 246 }
 247
 248 static int sis_ioctl_agp_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
 249 {
 250         drm_sis_private_t *dev_priv = dev->dev_private;
 251         drm_sis_mem_t *agp = data;
 252         PMemBlock block;
 253         int retval = 0;
 254
 255         if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
 256                 return -EINVAL;
 257
 258         block = mmAllocMem(dev_priv->AGPHeap, agp->size, 0, 0);
 259         if (block) {
 260                 /* TODO */
 261                 agp->offset = block->ofs;
 262                 agp->free = (unsigned long)block;
 263                 if (!add_alloc_set(agp->context, AGP_TYPE, agp->free)) {
 264                         DRM_DEBUG("adding to allocation set fails\n");
 265                         mmFreeMem((PMemBlock) agp->free);
 266                         retval = -1;
 267                 }
 268         } else {
 269                 agp->offset = 0;
 270                 agp->size = 0;
 271                 agp->free = 0;
 272         }
 273
 274         DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp->size,
 275             agp->offset);
 276
 277         return retval;
 278 }
 279
 280 static int sis_ioctl_agp_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
 281 {
 282         drm_sis_private_t *dev_priv = dev->dev_private;
 283         drm_sis_mem_t *agp = data;
 284
 285         if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
 286                 return -EINVAL;
 287
 288         if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock) agp->free))
 289                 return -EINVAL;
 290
 291         mmFreeMem((PMemBlock) agp->free);
 292         if (!del_alloc_set(agp->context, AGP_TYPE, agp->free))
 293                 return -EINVAL;
 294
 295         DRM_DEBUG("free agp, free = 0x%lx\n", agp->free);
 296
 297         return 0;
 298 }
 299
 300 int sis_init_context(struct drm_device *dev, int context)
 301 {
 302         int i;
 303
 304         for (i = 0; i < MAX_CONTEXT; i++) {
 305                 if (global_ppriv[i].used &&
 306                     (global_ppriv[i].context == context))
 307                         break;
 308         }
 309
 310         if (i >= MAX_CONTEXT) {
 311                 for (i = 0; i < MAX_CONTEXT; i++) {
 312                         if (!global_ppriv[i].used) {
 313                                 global_ppriv[i].context = context;
 314                                 global_ppriv[i].used = 1;
 315                                 global_ppriv[i].sets[0] = setInit();
 316                                 global_ppriv[i].sets[1] = setInit();
 317                                 DRM_DEBUG("init allocation set, socket=%d, "
 318                                           "context = %d\n", i, context);
 319                                 break;
 320                         }
 321                 }
 322                 if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
 323                     (global_ppriv[i].sets[1] == NULL)) {
 324                         return 0;
 325                 }
 326         }
 327
 328         return 1;
 329 }
 330
 331 int sis_final_context(struct drm_device *dev, int context)
 332 {
 333         int i;
 334
 335         for (i = 0; i < MAX_CONTEXT; i++) {
 336                 if (global_ppriv[i].used &&
 337                     (global_ppriv[i].context == context))
 338                         break;
 339         }
 340
 341         if (i < MAX_CONTEXT) {
 342                 set_t *set;
 343                 ITEM_TYPE item;
 344                 int retval;
 345
 346                 DRM_DEBUG("find socket %d, context = %d\n", i, context);
 347
 348                 /* Video Memory */
 349                 set = global_ppriv[i].sets[0];
 350                 retval = setFirst(set, &item);
 351                 while (retval) {
 352                         DRM_DEBUG("free video memory 0x%lx\n", item);
 353 #if defined(__linux__) && defined(CONFIG_FB_SIS)
 354                         sis_free(item);
 355 #else
 356                         mmFreeMem((PMemBlock) item);
 357 #endif
 358                         retval = setNext(set, &item);
 359                 }
 360                 setDestroy(set);
 361
 362                 /* AGP Memory */
 363                 set = global_ppriv[i].sets[1];
 364                 retval = setFirst(set, &item);
 365                 while (retval) {
 366                         DRM_DEBUG("free agp memory 0x%lx\n", item);
 367                         mmFreeMem((PMemBlock) item);
 368                         retval = setNext(set, &item);
 369                 }
 370                 setDestroy(set);
 371
 372                 global_ppriv[i].used = 0;
 373         }
 374
 375         return 1;
 376 }
 377
 378 drm_ioctl_desc_t sis_ioctls[] = {
 379         DRM_IOCTL_DEF(DRM_SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
 380         DRM_IOCTL_DEF(DRM_SIS_FB_FREE, sis_fb_free, DRM_AUTH),
 381         DRM_IOCTL_DEF(DRM_SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 382         DRM_IOCTL_DEF(DRM_SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
 383         DRM_IOCTL_DEF(DRM_SIS_AGP_FREE, sis_ioctl_agp_free, DRM_AUTH),
 384         DRM_IOCTL_DEF(DRM_SIS_FB_INIT, sis_fb_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY)
 385 };
 386
 387 int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);