release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/tidspbridge/core/tiomap_io.h

   1 /*
   2  * tiomap_io.h
   3  *
   4  * DSP-BIOS Bridge driver support functions for TI OMAP processors.
   5  *
   6  * Definitions, types and function prototypes for the io (r/w external mem).
   7  *
   8  * Copyright (C) 2005-2006 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 _TIOMAP_IO_
  20 #define _TIOMAP_IO_
  21
  22 /*
  23  * Symbol that defines beginning of shared memory.
  24  * For OMAP (Helen) this is the DSP Virtual base address of SDRAM.
  25  * This will be used to program DSP MMU to map DSP Virt to GPP phys.
  26  * (see dspMmuTlbEntry()).
  27  */
  28 #define SHMBASENAME "SHM_BEG"
  29 #define EXTBASE     "EXT_BEG"
  30 #define EXTEND      "_EXT_END"
  31 #define DYNEXTBASE  "_DYNEXT_BEG"
  32 #define DYNEXTEND   "_DYNEXT_END"
  33 #define IVAEXTMEMBASE   "_IVAEXTMEM_BEG"
  34 #define IVAEXTMEMEND   "_IVAEXTMEM_END"
  35
  36 #define DSP_TRACESEC_BEG  "_BRIDGE_TRACE_BEG"
  37 #define DSP_TRACESEC_END  "_BRIDGE_TRACE_END"
  38
  39 #define SYS_PUTCBEG               "_SYS_PUTCBEG"
  40 #define SYS_PUTCEND               "_SYS_PUTCEND"
  41 #define BRIDGE_SYS_PUTC_CURRENT   "_BRIDGE_SYS_PUTC_current"
  42
  43 #define WORDSWAP_ENABLE 0x3     /* Enable word swap */
  44
  45 /*
  46  *  ======== read_ext_dsp_data ========
  47  *  Reads it from DSP External memory. The external memory for the DSP
  48  * is configured by the combination of DSP MMU and shm Memory manager in the CDB
  49  */
  50 extern int read_ext_dsp_data(struct bridge_dev_context *dev_ctxt,
  51                                     u8 *host_buff, u32 dsp_addr,
  52                                     u32 ul_num_bytes, u32 mem_type);
  53
  54 /*
  55  *  ======== write_dsp_data ========
  56  */
  57 extern int write_dsp_data(struct bridge_dev_context *dev_context,
  58                                  u8 *host_buff, u32 dsp_addr,
  59                                  u32 ul_num_bytes, u32 mem_type);
  60
  61 /*
  62  *  ======== write_ext_dsp_data ========
  63  *  Writes to the DSP External memory for external program.
  64  *  The ext mem for progra is configured by the combination of DSP MMU and
  65  *  shm Memory manager in the CDB
  66  */
  67 extern int write_ext_dsp_data(struct bridge_dev_context *dev_context,
  68                                      u8 *host_buff, u32 dsp_addr,
  69                                      u32 ul_num_bytes, u32 mem_type,
  70                                      bool dynamic_load);
  71
  72 /*
  73  * ======== write_ext32_bit_dsp_data ========
  74  * Writes 32 bit data to the external memory
  75  */
  76 extern inline void write_ext32_bit_dsp_data(const
  77                                         struct bridge_dev_context *dev_context,
  78                                         u32 dsp_addr, u32 val)
  79 {
  80         *(u32 *) dsp_addr = ((dev_context->tc_word_swap_on) ? (((val << 16) &
  81                                                                  0xFFFF0000) |
  82                                                                 ((val >> 16) &
  83                                                                  0x0000FFFF)) :
  84                               val);
  85 }
  86
  87 /*
  88  * ======== read_ext32_bit_dsp_data ========
  89  * Reads 32 bit data from the external memory
  90  */
  91 extern inline u32 read_ext32_bit_dsp_data(const struct bridge_dev_context
  92                                           *dev_context, u32 dsp_addr)
  93 {
  94         u32 ret;
  95         ret = *(u32 *) dsp_addr;
  96
  97         ret = ((dev_context->tc_word_swap_on) ? (((ret << 16)
  98                                                   & 0xFFFF0000) | ((ret >> 16) &
  99                                                                    0x0000FFFF))
 100                : ret);
 101         return ret;
 102 }
 103
 104 #endif /* _TIOMAP_IO_ */