Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1. /**********************************************************
  2.  * Copyright 2009 VMware, Inc.  All rights reserved.
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person
  5.  * obtaining a copy of this software and associated documentation
  6.  * files (the "Software"), to deal in the Software without
  7.  * restriction, including without limitation the rights to use, copy,
  8.  * modify, merge, publish, distribute, sublicense, and/or sell copies
  9.  * of the Software, and to permit persons to whom the Software is
  10.  * furnished to do so, subject to the following conditions:
  11.  *
  12.  * The above copyright notice and this permission notice shall be
  13.  * included in all copies or substantial portions of the Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18.  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19.  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20.  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21.  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22.  * SOFTWARE.
  23.  *
  24.  **********************************************************/
  25.  
  26.  
  27. #include "vmw_screen.h"
  28. #include "vmw_fence.h"
  29. #include "vmw_context.h"
  30.  
  31. #include "util/u_memory.h"
  32. #include "pipe/p_compiler.h"
  33. #include "util/u_hash_table.h"
  34. #include <sys/types.h>
  35. #include <sys/stat.h>
  36. #include <unistd.h>
  37.  
  38. static struct util_hash_table *dev_hash = NULL;
  39.  
  40. static int vmw_dev_compare(void *key1, void *key2)
  41. {
  42.    return (major(*(dev_t *)key1) == major(*(dev_t *)key2) &&
  43.            minor(*(dev_t *)key1) == minor(*(dev_t *)key2)) ? 0 : 1;
  44. }
  45.  
  46. static unsigned vmw_dev_hash(void *key)
  47. {
  48.    return (major(*(dev_t *) key) << 16) | minor(*(dev_t *) key);
  49. }
  50.  
  51. /* Called from vmw_drm_create_screen(), creates and initializes the
  52.  * vmw_winsys_screen structure, which is the main entity in this
  53.  * module.
  54.  * First, check whether a vmw_winsys_screen object already exists for
  55.  * this device, and in that case return that one, making sure that we
  56.  * have our own file descriptor open to DRM.
  57.  */
  58.  
  59. struct vmw_winsys_screen *
  60. vmw_winsys_create( int fd, boolean use_old_scanout_flag )
  61. {
  62.    struct vmw_winsys_screen *vws;
  63.    struct stat stat_buf;
  64.  
  65.    if (dev_hash == NULL) {
  66.       dev_hash = util_hash_table_create(vmw_dev_hash, vmw_dev_compare);
  67.       if (dev_hash == NULL)
  68.          return NULL;
  69.    }
  70.  
  71.    if (fstat(fd, &stat_buf))
  72.       return NULL;
  73.  
  74.    vws = util_hash_table_get(dev_hash, &stat_buf.st_rdev);
  75.    if (vws) {
  76.       vws->open_count++;
  77.       return vws;
  78.    }
  79.  
  80.    vws = CALLOC_STRUCT(vmw_winsys_screen);
  81.    if (!vws)
  82.       goto out_no_vws;
  83.  
  84.    vws->device = stat_buf.st_rdev;
  85.    vws->open_count = 1;
  86.    vws->ioctl.drm_fd = dup(fd);
  87.    vws->use_old_scanout_flag = use_old_scanout_flag;
  88.    vws->base.have_gb_dma = TRUE;
  89.  
  90.    if (!vmw_ioctl_init(vws))
  91.       goto out_no_ioctl;
  92.  
  93.    vws->fence_ops = vmw_fence_ops_create(vws);
  94.    if (!vws->fence_ops)
  95.       goto out_no_fence_ops;
  96.  
  97.    if(!vmw_pools_init(vws))
  98.       goto out_no_pools;
  99.  
  100.    if (!vmw_winsys_screen_init_svga(vws))
  101.       goto out_no_svga;
  102.  
  103.    if (util_hash_table_set(dev_hash, &vws->device, vws) != PIPE_OK)
  104.       goto out_no_hash_insert;
  105.  
  106.    return vws;
  107. out_no_hash_insert:
  108. out_no_svga:
  109.    vmw_pools_cleanup(vws);
  110. out_no_pools:
  111.    vws->fence_ops->destroy(vws->fence_ops);
  112. out_no_fence_ops:
  113.    vmw_ioctl_cleanup(vws);
  114. out_no_ioctl:
  115.    close(vws->ioctl.drm_fd);
  116.    FREE(vws);
  117. out_no_vws:
  118.    return NULL;
  119. }
  120.  
  121. void
  122. vmw_winsys_destroy(struct vmw_winsys_screen *vws)
  123. {
  124.    if (--vws->open_count == 0) {
  125.       util_hash_table_remove(dev_hash, &vws->device);
  126.       vmw_pools_cleanup(vws);
  127.       vws->fence_ops->destroy(vws->fence_ops);
  128.       vmw_ioctl_cleanup(vws);
  129.       close(vws->ioctl.drm_fd);
  130.       FREE(vws);
  131.    }
  132. }
  133.