/drivers/staging/tidspbridge/include/dspbridge/chnldefs.h

https://bitbucket.org/wisechild/galaxy-nexus · C++ Header · 63 lines · 29 code · 10 blank · 24 comment · 0 complexity · a0ff2cb533c32c2db83d453e093677a9 MD5 · raw file 

    

  1. /*
    2. 

  2.  * chnldefs.h
    3. 

  3.  *
    4. 

  4.  * DSP-BIOS Bridge driver support functions for TI OMAP processors.
    5. 

  5.  *
    6. 

  6.  * System-wide channel objects and constants.
    7. 

  7.  *
    8. 

  8.  * Copyright (C) 2005-2006 Texas Instruments, Inc.
    9. 

  9.  *
    10. 

  10.  * This package is free software; you can redistribute it and/or modify
    11. 

  11.  * it under the terms of the GNU General Public License version 2 as
    12. 

  12.  * published by the Free Software Foundation.
    13. 

  13.  *
    14. 

  14.  * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    15. 

  15.  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    16. 

  16.  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    17. 

  17.  */
    18. 

  18. 

  19. #ifndef CHNLDEFS_
    20. 

  20. #define CHNLDEFS_
    21. 

  21. 

  22. /* Channel id option. */
    23. 

  23. #define CHNL_PICKFREE       (~0UL)	/* Let manager pick a free channel. */
    24. 

  24. 

  25. /* Channel modes */
    26. 

  26. #define CHNL_MODETODSP		0	/* Data streaming to the DSP. */
    27. 

  27. #define CHNL_MODEFROMDSP	1	/* Data streaming from the DSP. */
    28. 

  28. 

  29. /* GetIOCompletion flags */
    30. 

  30. #define CHNL_IOCINFINITE     0xffffffff	/* Wait forever for IO completion. */
    31. 

  31. #define CHNL_IOCNOWAIT       0x0	/* Dequeue an IOC, if available. */
    32. 

  32. 

  33. /* IO Completion Record status: */
    34. 

  34. #define CHNL_IOCSTATCOMPLETE 0x0000	/* IO Completed. */
    35. 

  35. #define CHNL_IOCSTATCANCEL   0x0002	/* IO was cancelled */
    36. 

  36. #define CHNL_IOCSTATTIMEOUT  0x0008	/* Wait for IOC timed out. */
    37. 

  37. #define CHNL_IOCSTATEOS      0x8000	/* End Of Stream reached. */
    38. 

  38. 

  39. /* Macros for checking I/O Completion status: */
    40. 

  40. #define CHNL_IS_IO_COMPLETE(ioc)  (!(ioc.status & ~CHNL_IOCSTATEOS))
    41. 

  41. #define CHNL_IS_IO_CANCELLED(ioc) (ioc.status & CHNL_IOCSTATCANCEL)
    42. 

  42. #define CHNL_IS_TIMED_OUT(ioc)    (ioc.status & CHNL_IOCSTATTIMEOUT)
    43. 

  43. 

  44. /* Channel attributes: */
    45. 

  45. struct chnl_attr {
    46. 

  46. 	u32 uio_reqs;		/* Max # of preallocated I/O requests. */
    47. 

  47. 	void *event_obj;	/* User supplied auto-reset event object. */
    48. 

  48. 	char *str_event_name;	/* Ptr to name of user event object. */
    49. 

  49. 	void *reserved1;	/* Reserved for future use. */
    50. 

  50. 	u32 reserved2;		/* Reserved for future use. */
    51. 

  51. 

  52. };
    53. 

  53. 

  54. /* I/O completion record: */
    55. 

  55. struct chnl_ioc {
    56. 

  56. 	void *buf;		/* Buffer to be filled/emptied. */
    57. 

  57. 	u32 byte_size;		/* Bytes transferred. */
    58. 

  58. 	u32 buf_size;		/* Actual buffer size in bytes */
    59. 

  59. 	u32 status;		/* Status of IO completion. */
    60. 

  60. 	u32 arg;		/* User argument associated with buf. */
    61. 

  61. };
    62. 

  62. 

  63. #endif /* CHNLDEFS_ */
    64.