diff options
Diffstat (limited to 'drivers/staging/tidspbridge/include/dspbridge/chnldefs.h')
| -rw-r--r-- | drivers/staging/tidspbridge/include/dspbridge/chnldefs.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/staging/tidspbridge/include/dspbridge/chnldefs.h b/drivers/staging/tidspbridge/include/dspbridge/chnldefs.h new file mode 100644 index 000000000000..5bf5f6b0b7b4 --- /dev/null +++ b/drivers/staging/tidspbridge/include/dspbridge/chnldefs.h @@ -0,0 +1,66 @@ +/* + * 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 manager limits: */ +#define CHNL_INITIOREQS 4 /* Default # of I/O requests. */ + +/* 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 *pstr_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 *pbuf; /* 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 dw_arg; /* User argument associated with pbuf. */ +}; + +#endif /* CHNLDEFS_ */ |