1 /**************************************************************************
3 * Copyright (c) 2007-2010 VMware, Inc., Palo Alto, CA., USA
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
31 #include "vmwgfx_drv.h"
32 #include "ttm/ttm_module.h"
33 #include "ttm/ttm_bo_driver.h"
34 #include "ttm/ttm_placement.h"
35 #include <linux/idr.h>
36 #include <linux/spinlock.h>
37 #include <linux/kernel.h>
39 struct vmwgfx_gmrid_man
{
44 static int vmw_gmrid_man_get_node(struct ttm_mem_type_manager
*man
,
45 struct ttm_buffer_object
*bo
,
46 struct ttm_placement
*placement
,
47 struct ttm_mem_reg
*mem
)
49 struct vmwgfx_gmrid_man
*gman
=
50 (struct vmwgfx_gmrid_man
*)man
->priv
;
55 id
= ida_simple_get(&gman
->gmr_ida
, 0, gman
->max_gmr_ids
, GFP_KERNEL
);
67 static void vmw_gmrid_man_put_node(struct ttm_mem_type_manager
*man
,
68 struct ttm_mem_reg
*mem
)
70 struct vmwgfx_gmrid_man
*gman
=
71 (struct vmwgfx_gmrid_man
*)man
->priv
;
74 ida_simple_remove(&gman
->gmr_ida
, mem
->start
);
79 static int vmw_gmrid_man_init(struct ttm_mem_type_manager
*man
,
82 struct vmwgfx_gmrid_man
*gman
=
83 kzalloc(sizeof(*gman
), GFP_KERNEL
);
85 if (unlikely(gman
== NULL
))
88 ida_init(&gman
->gmr_ida
);
89 gman
->max_gmr_ids
= p_size
;
90 man
->priv
= (void *) gman
;
94 static int vmw_gmrid_man_takedown(struct ttm_mem_type_manager
*man
)
96 struct vmwgfx_gmrid_man
*gman
=
97 (struct vmwgfx_gmrid_man
*)man
->priv
;
100 ida_destroy(&gman
->gmr_ida
);
106 static void vmw_gmrid_man_debug(struct ttm_mem_type_manager
*man
,
109 printk(KERN_INFO
"%s: No debug info available for the GMR "
110 "id manager.\n", prefix
);
113 const struct ttm_mem_type_manager_func vmw_gmrid_manager_func
= {
115 vmw_gmrid_man_takedown
,
116 vmw_gmrid_man_get_node
,
117 vmw_gmrid_man_put_node
,