1 /*
2 * Copyright (c) 2011 Intel Corporation. All Rights Reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * 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
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
19 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
20 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
21 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
22 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Binglin Chen <binglin.chen@intel.com>
26 *
27 */
28
29 #include "psb_def.h"
30
31 #ifdef HAVE_CONFIG_H
32 #include "config.h"
33 #endif
34
35 #include <linux/types.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include "psb_ws_driver.h"
39
40 static struct _ValidateNode *
psb_alloc(struct _WsbmVNodeFuncs * func,int type_id)41 psb_alloc(struct _WsbmVNodeFuncs *func, int type_id) {
42 if (type_id == 0) {
43 struct _PsbDrmValidateNode *vNode = malloc(sizeof(*vNode));
44
45 if (vNode == NULL) return NULL;
46
47 vNode->base.func = func;
48 vNode->base.type_id = 0;
49 return &vNode->base;
50 } else {
51 struct _ValidateNode *node = malloc(sizeof(*node));
52
53 if (node == NULL) return NULL;
54
55 node->func = func;
56 node->type_id = 1;
57 return node;
58 }
59 }
60
61 /*
62 * Free an allocated validate list node.
63 */
64
65 static void
psb_free(struct _ValidateNode * node)66 psb_free(struct _ValidateNode *node)
67 {
68 if (node->type_id == 0)
69 free(containerOf(node, struct _PsbDrmValidateNode, base));
70
71 else
72 free(node);
73 }
74
75 /*
76 * Clear the private part of the validate list node. This happens when
77 * the list node is newly allocated or is being reused. Since we only have
78 * a private part when node->type_id == 0 we only care to clear in that
79 * case. We want to clear the drm ioctl argument.
80 */
81
82 static void
psb_clear(struct _ValidateNode * node)83 psb_clear(struct _ValidateNode *node)
84 {
85 if (node->type_id == 0) {
86 struct _PsbDrmValidateNode *vNode =
87 containerOf(node, struct _PsbDrmValidateNode, base);
88
89 memset(&vNode->val_arg.d.req, 0, sizeof(vNode->val_arg.d.req));
90 }
91 }
92
93 static struct _WsbmVNodeFuncs psbVNode = {
94 .alloc = psb_alloc,
95 .free = psb_free,
96 .clear = psb_clear,
97 };
98
99 struct _WsbmVNodeFuncs *
psbVNodeFuncs(void)100 psbVNodeFuncs(void) {
101 return &psbVNode;
102 }
103