| /* |
| * chnldefs.h |
| * |
| * DSP-BIOS Bridge driver support functions for TI OMAP processors. |
| * |
| * System-wide channel objects and constants. |
| * |
| * Copyright (C) 2005-2006 Texas Instruments, Inc. |
| * |
| * This package is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| |
| #ifndef CHNLDEFS_ |
| #define CHNLDEFS_ |
| |
| /* Channel id option. */ |
| #define CHNL_PICKFREE (~0UL) /* Let manager pick a free channel. */ |
| |
| /* Channel modes */ |
| #define CHNL_MODETODSP 0 /* Data streaming to the DSP. */ |
| #define CHNL_MODEFROMDSP 1 /* Data streaming from the DSP. */ |
| |
| /* GetIOCompletion flags */ |
| #define CHNL_IOCINFINITE 0xffffffff /* Wait forever for IO completion. */ |
| #define CHNL_IOCNOWAIT 0x0 /* Dequeue an IOC, if available. */ |
| |
| /* IO Completion Record status: */ |
| #define CHNL_IOCSTATCOMPLETE 0x0000 /* IO Completed. */ |
| #define CHNL_IOCSTATCANCEL 0x0002 /* IO was cancelled */ |
| #define CHNL_IOCSTATTIMEOUT 0x0008 /* Wait for IOC timed out. */ |
| #define CHNL_IOCSTATEOS 0x8000 /* End Of Stream reached. */ |
| |
| /* Macros for checking I/O Completion status: */ |
| #define CHNL_IS_IO_COMPLETE(ioc) (!(ioc.status & ~CHNL_IOCSTATEOS)) |
| #define CHNL_IS_IO_CANCELLED(ioc) (ioc.status & CHNL_IOCSTATCANCEL) |
| #define CHNL_IS_TIMED_OUT(ioc) (ioc.status & CHNL_IOCSTATTIMEOUT) |
| |
| /* Channel attributes: */ |
| struct chnl_attr { |
| u32 uio_reqs; /* Max # of preallocated I/O requests. */ |
| void *event_obj; /* User supplied auto-reset event object. */ |
| char *str_event_name; /* Ptr to name of user event object. */ |
| void *reserved1; /* Reserved for future use. */ |
| u32 reserved2; /* Reserved for future use. */ |
| |
| }; |
| |
| /* I/O completion record: */ |
| struct chnl_ioc { |
| void *buf; /* Buffer to be filled/emptied. */ |
| u32 byte_size; /* Bytes transferred. */ |
| u32 buf_size; /* Actual buffer size in bytes */ |
| u32 status; /* Status of IO completion. */ |
| u32 arg; /* User argument associated with buf. */ |
| }; |
| |
| #endif /* CHNLDEFS_ */ |
