firmware/export/sdmmc.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2004 by Jens Arnold
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #ifndef __SDMMC_H__
  22 #define __SDMMC_H__
  23
  24 #include <stdbool.h>
  25
  26 typedef struct
  27 {
  28     bool initialized;
  29
  30     unsigned long read_timeout;     /* n * 8 clock cycles */
  31     unsigned long write_timeout;    /* n * 8 clock cycles */
  32
  33     unsigned long ocr;              /* OCR register */
  34     unsigned long csd[4];           /* CSD register, 16 bytes */
  35     unsigned long cid[4];           /* CID register, 16 bytes */
  36     unsigned long speed;            /* bit/s */
  37     unsigned int nsac;              /* clock cycles */
  38     unsigned long taac;             /* n * 0.1 ns */
  39     unsigned int r2w_factor;
  40     unsigned long numblocks;        /* size in flash blocks */
  41     unsigned int blocksize;         /* block size in bytes */
  42
  43 #if (CONFIG_STORAGE & STORAGE_MMC)
  44     unsigned char bitrate_register;
  45 #endif
  46
  47 #if (CONFIG_STORAGE & STORAGE_SD)
  48     unsigned long rca;               /* RCA register */
  49     unsigned int current_bank;
  50 #endif
  51 } tCardInfo;
  52
  53 #if (CONFIG_STORAGE & STORAGE_SD)
  54
  55 #include "sd.h"
  56 #define card_get_info          card_get_info_target
  57 tCardInfo *card_get_info_target(int card_no);
  58 void sd_parse_csd(tCardInfo *card);
  59
  60 #else /* STORAGE_MMC */
  61
  62 #include "ata_mmc.h"
  63 #define card_get_info          mmc_card_info
  64 tCardInfo *mmc_card_info(int card_no);
  65 #define card_touched           mmc_touched
  66
  67 #endif
  68
  69 /* helper function to extract n (<=32) bits from an arbitrary position.
  70    counting from MSB to LSB */
  71 unsigned long card_extract_bits(
  72         const unsigned long *p, /* the start of the bitfield array */
  73         unsigned int start,     /* bit no. to start reading  */
  74         unsigned int size);     /* how many bits to read */
  75 #endif