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

   1 /*
   2  * cmmdefs.h
   3  *
   4  * DSP-BIOS Bridge driver support functions for TI OMAP processors.
   5  *
   6  * Global MEM constants and types.
   7  *
   8  * Copyright (C) 2008 Texas Instruments, Inc.
   9  *
  10  * This package is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  16  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  17  */
  18
  19 #ifndef CMMDEFS_
  20 #define CMMDEFS_
  21
  22 #include <dspbridge/list.h>
  23
  24 /* Cmm attributes used in cmm_create() */
  25 struct cmm_mgrattrs {
  26         /* Minimum SM allocation; default 32 bytes. */
  27         u32 ul_min_block_size;
  28 };
  29
  30 /* Attributes for CMM_AllocBuf() & CMM_AllocDesc() */
  31 struct cmm_attrs {
  32         u32 ul_seg_id;          /*  1,2... are SM segments. 0 is not. */
  33         u32 ul_alignment;       /*  0,1,2,4....ul_min_block_size */
  34 };
  35
  36 /*
  37  *  DSPPa to GPPPa Conversion Factor.
  38  *
  39  *  For typical platforms:
  40  *      converted Address = PaDSP + ( c_factor * addressToConvert).
  41  */
  42 #define CMM_SUBFROMDSPPA        -1
  43 #define CMM_ADDTODSPPA          1
  44
  45 #define CMM_ALLSEGMENTS         0xFFFFFF        /* All SegIds */
  46 #define CMM_MAXGPPSEGS          1       /* Maximum # of SM segs */
  47
  48 /*
  49  *  SMSEGs are SM segments the DSP allocates from.
  50  *
  51  *  This info is used by the GPP to xlate DSP allocated PAs.
  52  */
  53
  54 struct cmm_seginfo {
  55         u32 dw_seg_base_pa;     /* Start Phys address of SM segment */
  56         /* Total size in bytes of segment: DSP+GPP */
  57         u32 ul_total_seg_size;
  58         u32 dw_gpp_base_pa;     /* Start Phys addr of Gpp SM seg */
  59         u32 ul_gpp_size;        /* Size of Gpp SM seg in bytes */
  60         u32 dw_dsp_base_va;     /* DSP virt base byte address */
  61         u32 ul_dsp_size;        /* DSP seg size in bytes */
  62         /* # of current GPP allocations from this segment */
  63         u32 ul_in_use_cnt;
  64         u32 dw_seg_base_va;     /* Start Virt address of SM seg */
  65
  66 };
  67
  68 /* CMM useful information */
  69 struct cmm_info {
  70         /* # of SM segments registered with this Cmm. */
  71         u32 ul_num_gppsm_segs;
  72         /* Total # of allocations outstanding for CMM */
  73         u32 ul_total_in_use_cnt;
  74         /* Min SM block size allocation from cmm_create() */
  75         u32 ul_min_block_size;
  76         /* Info per registered SM segment. */
  77         struct cmm_seginfo seg_info[CMM_MAXGPPSEGS];
  78 };
  79
  80 /* XlatorCreate attributes */
  81 struct cmm_xlatorattrs {
  82         u32 ul_seg_id;          /* segment Id used for SM allocations */
  83         u32 dw_dsp_bufs;        /* # of DSP-side bufs */
  84         u32 dw_dsp_buf_size;    /* size of DSP-side bufs in GPP bytes */
  85         /* Vm base address alloc'd in client process context */
  86         void *vm_base;
  87         /* dw_vm_size must be >= (dwMaxNumBufs * dwMaxSize) */
  88         u32 dw_vm_size;
  89 };
  90
  91 /*
  92  * Cmm translation types. Use to map SM addresses to process context.
  93  */
  94 enum cmm_xlatetype {
  95         CMM_VA2PA = 0,          /* Virtual to GPP physical address xlation */
  96         CMM_PA2VA = 1,          /* GPP Physical to virtual */
  97         CMM_VA2DSPPA = 2,       /* Va to DSP Pa */
  98         CMM_PA2DSPPA = 3,       /* GPP Pa to DSP Pa */
  99         CMM_DSPPA2PA = 4,       /* DSP Pa to GPP Pa */
 100 };
 101
 102 struct cmm_object;
 103 struct cmm_xlatorobject;
 104
 105 #endif /* CMMDEFS_ */