1 /*
2 * dspbridge/src/api/linux/dsptrap.c
3 *
4 * DSP-BIOS Bridge driver support functions for TI OMAP processors.
5 *
6 * Copyright (C) 2007 Texas Instruments, Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published
10 * by the Free Software Foundation version 2.1 of the License.
11 *
12 * This program is distributed .as is. WITHOUT ANY WARRANTY of any kind,
13 * whether express or implied; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 */
17
18
19 /*
20 * ======== dsptrap.c ========
21 * Description:
22 * Source for trap hand-shaking (involves DeviceIOControl).
23 *
24 *
25 *! Revision History
26 *! =================
27 *! 28-Jan-2000 rr: NT_CMD_FROM_OFFSET moved to dsptrap.h
28 *! 02-Dec-1999 rr: DeviceIOControl now returns BOOL Value so !fSuccess
29 *! indicates failure.
30 *! 02-Nov-1999 kc: Modified to enable return values from BRD API calls.
31 *! 01-Oct-1999 ag: DSPTRAP_Trap() now returns correct status.
32 *! 18-Aug-1999 rr: Created.Ported from WSX tree.
33 *
34 */
35
36 /* ----------------------------------- Host OS */
37 #include <host_os.h>
38
39 /* ----------------------------------- DSP/BIOS Bridge */
40 #include <dbdefs.h>
41 #include <errbase.h>
42
43 /* ----------------------------------- This */
44 #include <dsptrap.h>
45 #include <_dbdebug.h>
46
47 /* ----------------------------------- Globals */
48 extern int hMediaFile; /* class driver handle */
49
50 /*
51 * ======== DSPTRAP_Trap ========
52 */
DSPTRAP_Trap(Trapped_Args * args,int cmd)53 DWORD DSPTRAP_Trap(Trapped_Args *args, int cmd)
54 {
55 DWORD dwResult = DSP_EHANDLE;/* returned from call into class driver */
56
57 if (hMediaFile >= 0)
58 dwResult = ioctl(hMediaFile, cmd, args);
59 else
60 DEBUGMSG(DSPAPI_ZONE_FUNCTION, "Invalid handle to driver\n");
61
62 return dwResult;
63 }
64