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 */ 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
