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  */
  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 "dev/drm/drmP.h"
  39 #include "dev/drm/sis_drm.h"
  40 #include "dev/drm/sis_drv.h"
  41 #include "dev/drm/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
  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
  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
  84 static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
  85 {
  86         return 0;
  87 }
  88
  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
 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  */
 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
 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
 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
 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
 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
 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
 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
 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);