via_mm.c

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    1 /*-
    2  * Copyright 2006 Tungsten Graphics Inc., Bismarck, ND., USA.
    3  * All rights reserved.
    4  *
    5  * Permission is hereby granted, free of charge, to any person obtaining a
    6  * copy of this software and associated documentation files (the "Software"),
    7  * to deal in the Software without restriction, including without limitation
    8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
    9  * and/or sell copies of the Software, and to permit persons to whom the
   10  * Software is furnished to do so, subject to the following conditions:
   11  *
   12  * The above copyright notice and this permission notice (including the
   13  * next paragraph) shall be included in all copies or substantial portions
   14  * of the Software.
   15  *
   16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
   19  * THE AUTHORS OR COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
   20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   22  * DEALINGS IN THE SOFTWARE.
   23  */
   24 
   25 /*
   26  * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: releng/9.0/sys/dev/drm/via_mm.c 207066 2010-04-22 18:21:25Z rnoland $");
   31 
   32 #include "dev/drm/drmP.h"
   33 #include "dev/drm/via_drm.h"
   34 #include "dev/drm/via_drv.h"
   35 #include "dev/drm/drm_sman.h"
   36 
   37 #define VIA_MM_ALIGN_SHIFT 4
   38 #define VIA_MM_ALIGN_MASK ( (1 << VIA_MM_ALIGN_SHIFT) - 1)
   39 
   40 int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
   41 {
   42         drm_via_agp_t *agp = data;
   43         drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
   44         int ret;
   45 
   46         ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_AGP, 0,
   47                                  agp->size >> VIA_MM_ALIGN_SHIFT);
   48         if (ret) {
   49                 DRM_ERROR("AGP memory manager initialisation error\n");
   50                 return ret;
   51         }
   52 
   53         dev_priv->agp_initialized = 1;
   54         dev_priv->agp_offset = agp->offset;
   55 
   56         DRM_DEBUG("offset = %u, size = %u\n", agp->offset, agp->size);
   57         return 0;
   58 }
   59 
   60 int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
   61 {
   62         drm_via_fb_t *fb = data;
   63         drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
   64         int ret;
   65 
   66         ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_VIDEO, 0,
   67                                  fb->size >> VIA_MM_ALIGN_SHIFT);
   68         if (ret) {
   69                 DRM_ERROR("VRAM memory manager initialisation error\n");
   70                 return ret;
   71         }
   72 
   73         dev_priv->vram_initialized = 1;
   74         dev_priv->vram_offset = fb->offset;
   75 
   76         DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size);
   77 
   78         return 0;
   79 
   80 }
   81 
   82 int via_final_context(struct drm_device *dev, int context)
   83 {
   84         drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
   85 
   86         via_release_futex(dev_priv, context);
   87 
   88 #ifdef __linux__
   89         /* Linux specific until context tracking code gets ported to BSD */
   90         /* Last context, perform cleanup */
   91         if (dev->ctx_count == 1 && dev->dev_private) {
   92                 DRM_DEBUG("Last Context\n");
   93                 drm_irq_uninstall(dev);
   94                 via_cleanup_futex(dev_priv);
   95                 via_do_cleanup_map(dev);
   96         }
   97 #endif
   98         return 1;
   99 }
  100 
  101 void via_lastclose(struct drm_device *dev)
  102 {
  103         drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
  104 
  105         if (!dev_priv)
  106                 return;
  107 
  108         drm_sman_cleanup(&dev_priv->sman);
  109         dev_priv->vram_initialized = 0;
  110         dev_priv->agp_initialized = 0;
  111 }
  112 
  113 int via_mem_alloc(struct drm_device *dev, void *data,
  114                   struct drm_file *file_priv)
  115 {
  116         drm_via_mem_t *mem = data;
  117         int retval = 0;
  118         struct drm_memblock_item *item;
  119         drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
  120         unsigned long tmpSize;
  121 
  122         if (mem->type > VIA_MEM_AGP) {
  123                 DRM_ERROR("Unknown memory type allocation\n");
  124                 return -EINVAL;
  125         }
  126         if (0 == ((mem->type == VIA_MEM_VIDEO) ? dev_priv->vram_initialized :
  127                       dev_priv->agp_initialized)) {
  128                 DRM_ERROR
  129                     ("Attempt to allocate from uninitialized memory manager.\n");
  130                 return -EINVAL;
  131         }
  132 
  133         tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT;
  134         item = drm_sman_alloc(&dev_priv->sman, mem->type, tmpSize, 0,
  135                               (unsigned long)file_priv);
  136         if (item) {
  137                 mem->offset = ((mem->type == VIA_MEM_VIDEO) ?
  138                               dev_priv->vram_offset : dev_priv->agp_offset) +
  139                     (item->mm->
  140                      offset(item->mm, item->mm_info) << VIA_MM_ALIGN_SHIFT);
  141                 mem->index = item->user_hash.key;
  142         } else {
  143                 mem->offset = 0;
  144                 mem->size = 0;
  145                 mem->index = 0;
  146                 DRM_DEBUG("Video memory allocation failed\n");
  147                 retval = -ENOMEM;
  148         }
  149 
  150         return retval;
  151 }
  152 
  153 int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
  154 {
  155         drm_via_private_t *dev_priv = dev->dev_private;
  156         drm_via_mem_t *mem = data;
  157         int ret;
  158 
  159         ret = drm_sman_free_key(&dev_priv->sman, mem->index);
  160         DRM_DEBUG("free = 0x%lx\n", mem->index);
  161 
  162         return ret;
  163 }
  164 
  165 
  166 void via_reclaim_buffers_locked(struct drm_device * dev,
  167                                 struct drm_file *file_priv)
  168 {
  169         drm_via_private_t *dev_priv = dev->dev_private;
  170 
  171         if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)file_priv))
  172                 return;
  173 
  174         if (dev->driver->dma_quiescent)
  175                 dev->driver->dma_quiescent(dev);
  176 
  177         drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)file_priv);
  178 
  179         return;
  180 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/drm/via_mm.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/drm/via_mm.c