release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/tidspbridge/include/dspbridge/chnlpriv.h

   1 /*
   2  * chnlpriv.h
   3  *
   4  * DSP-BIOS Bridge driver support functions for TI OMAP processors.
   5  *
   6  * Private channel header shared between DSPSYS, DSPAPI and
   7  * Bridge driver modules.
   8  *
   9  * Copyright (C) 2005-2006 Texas Instruments, Inc.
  10  *
  11  * This package is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  *
  15  * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  17  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  18  */
  19
  20 #ifndef CHNLPRIV_
  21 #define CHNLPRIV_
  22
  23 #include <dspbridge/chnldefs.h>
  24 #include <dspbridge/devdefs.h>
  25 #include <dspbridge/sync.h>
  26
  27 /* Channel manager limits: */
  28 #define CHNL_MAXCHANNELS    32  /* Max channels available per transport */
  29
  30 /*
  31  *  Trans port channel Id definitions:(must match dsp-side).
  32  *
  33  *  For CHNL_MAXCHANNELS = 16:
  34  *
  35  *  ChnlIds:
  36  *      0-15  (PCPY) - transport 0)
  37  *      16-31 (DDMA) - transport 1)
  38  *      32-47 (ZCPY) - transport 2)
  39  */
  40 #define CHNL_PCPY       0       /* Proc-copy transport 0 */
  41
  42 #define CHNL_MAXIRQ     0xff    /* Arbitrarily large number. */
  43
  44 /* The following modes are private: */
  45 #define CHNL_MODEUSEREVENT  0x1000      /* User provided the channel event. */
  46 #define CHNL_MODEMASK       0x1001
  47
  48 /* Higher level channel states: */
  49 #define CHNL_STATEREADY         0       /* Channel ready for I/O. */
  50 #define CHNL_STATECANCEL        1       /* I/O was cancelled. */
  51 #define CHNL_STATEEOS           2       /* End Of Stream reached. */
  52
  53 /* Macros for checking mode: */
  54 #define CHNL_IS_INPUT(mode)      (mode & CHNL_MODEFROMDSP)
  55 #define CHNL_IS_OUTPUT(mode)     (!CHNL_IS_INPUT(mode))
  56
  57 /* Types of channel class libraries: */
  58 #define CHNL_TYPESM         1   /* Shared memory driver. */
  59 #define CHNL_TYPEBM         2   /* Bus Mastering driver. */
  60
  61 /* Max string length of channel I/O completion event name - change if needed */
  62 #define CHNL_MAXEVTNAMELEN  32
  63
  64 /* Max memory pages lockable in CHNL_PrepareBuffer() - change if needed */
  65 #define CHNL_MAXLOCKPAGES   64
  66
  67 /* Channel info. */
  68 struct chnl_info {
  69         struct chnl_mgr *hchnl_mgr;     /* Owning channel manager. */
  70         u32 cnhl_id;            /* Channel ID. */
  71         void *event_obj;        /* Channel I/O completion event. */
  72         /*Abstraction of I/O completion event. */
  73         struct sync_object *sync_event;
  74         s8 dw_mode;             /* Channel mode. */
  75         u8 dw_state;            /* Current channel state. */
  76         u32 bytes_tx;           /* Total bytes transferred. */
  77         u32 cio_cs;             /* Number of IOCs in queue. */
  78         u32 cio_reqs;           /* Number of IO Requests in queue. */
  79         u32 process;            /* Process owning this channel. */
  80 };
  81
  82 /* Channel manager info: */
  83 struct chnl_mgrinfo {
  84         u8 dw_type;             /* Type of channel class library. */
  85         /* Channel handle, given the channel id. */
  86         struct chnl_object *chnl_obj;
  87         u8 open_channels;       /* Number of open channels. */
  88         u8 max_channels;        /* total # of chnls supported */
  89 };
  90
  91 /* Channel Manager Attrs: */
  92 struct chnl_mgrattrs {
  93         /* Max number of channels this manager can use. */
  94         u8 max_channels;
  95         u32 word_size;          /* DSP Word size. */
  96 };
  97
  98 #endif /* CHNLPRIV_ */