1 /**********************************************************
2 * Copyright 2009-2015 VMware, Inc. All rights reserved.
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:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
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
24 **********************************************************/
27 #include "vmw_screen.h"
28 #include "vmw_fence.h"
29 #include "vmw_context.h"
31 #include "util/u_memory.h"
32 #include "pipe/p_compiler.h"
33 #include "util/u_hash_table.h"
35 #include <sys/mkdev.h>
37 #ifdef MAJOR_IN_SYSMACROS
38 #include <sys/sysmacros.h>
43 static struct util_hash_table *dev_hash = NULL;
45 static int vmw_dev_compare(void *key1, void *key2)
47 return (major(*(dev_t *)key1) == major(*(dev_t *)key2) &&
48 minor(*(dev_t *)key1) == minor(*(dev_t *)key2)) ? 0 : 1;
51 static unsigned vmw_dev_hash(void *key)
53 return (major(*(dev_t *) key) << 16) | minor(*(dev_t *) key);
56 /* Called from vmw_drm_create_screen(), creates and initializes the
57 * vmw_winsys_screen structure, which is the main entity in this
59 * First, check whether a vmw_winsys_screen object already exists for
60 * this device, and in that case return that one, making sure that we
61 * have our own file descriptor open to DRM.
64 struct vmw_winsys_screen *
65 vmw_winsys_create( int fd )
67 struct vmw_winsys_screen *vws;
70 if (dev_hash == NULL) {
71 dev_hash = util_hash_table_create(vmw_dev_hash, vmw_dev_compare);
76 if (fstat(fd, &stat_buf))
79 vws = util_hash_table_get(dev_hash, &stat_buf.st_rdev);
85 vws = CALLOC_STRUCT(vmw_winsys_screen);
89 vws->device = stat_buf.st_rdev;
91 vws->ioctl.drm_fd = dup(fd);
92 vws->base.have_gb_dma = TRUE;
93 vws->base.need_to_rebind_resources = FALSE;
95 if (!vmw_ioctl_init(vws))
98 vws->fence_ops = vmw_fence_ops_create(vws);
100 goto out_no_fence_ops;
102 if(!vmw_pools_init(vws))
105 if (!vmw_winsys_screen_init_svga(vws))
108 if (util_hash_table_set(dev_hash, &vws->device, vws) != PIPE_OK)
109 goto out_no_hash_insert;
114 vmw_pools_cleanup(vws);
116 vws->fence_ops->destroy(vws->fence_ops);
118 vmw_ioctl_cleanup(vws);
120 close(vws->ioctl.drm_fd);
127 vmw_winsys_destroy(struct vmw_winsys_screen *vws)
129 if (--vws->open_count == 0) {
130 util_hash_table_remove(dev_hash, &vws->device);
131 vmw_pools_cleanup(vws);
132 vws->fence_ops->destroy(vws->fence_ops);
133 vmw_ioctl_cleanup(vws);
134 close(vws->ioctl.drm_fd);