forked from len0rd/rockbox
15e5237469
* Create new 'sector_t' type alias:
* uint64_t for all targets with HAVE_LBA48 or HAVE_SDUC
* unsigned long for the everything else
* Alter all storage APIs to use sector_t instead of 'unsigned long'
* Alter Volume/Partition/storage info structures to use sector_t
* Disk cache converted to sector_t
* ATA Core:
* convert to using sector_t for sector addresses and drive sizes
* Always fill out upper 16 bits of LBA48 addresses
* IDENTIFY INFO is fixed at 512 bytes, not SECTOR_SIZE
* USB mass storage:
* convert to using sector_t for sector addesses and drive sizes
* Implement READ_16/WRITE_16 for LBA48 addresses
* Convert FAT code to use sector_t for all sector references
* output_dyn_value() now accepts int64_t instead of 'int'
* Corrected "rockbox info" to work for (MULTIVOLUME & !MULTIDRIVE)
* Better reporting of disk and (logical+physical) sector sizes in debug info
* Detect SDUC cards and report on storage debug_info screen
To-do: SDUC
* Refactor SD core to remove duplicate code in every driver
* Card probe and init state machine
* Implement core SDUC support
* SD2.0 needs to be 2.0+ (fixed for jz47xx and x1000)
* Host and Card ID (ACMD41)
* 32-bit addressing for all read/write/erase operations (CMD22)
* ADD SDUC to target device drivers, defining HAVE_SDUC as appropriate
Change-Id: Ib0138781a0081664d11511037685503df1b93608
166 lines
3.4 KiB
C
166 lines
3.4 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 Frank Gevaerts
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdbool.h>
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#include <string.h>
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#include "storage.h"
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#define SECTOR_SIZE 512
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#define NUM_SECTORS 16384
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static unsigned char ramdisk[SECTOR_SIZE * NUM_SECTORS];
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static long last_disk_activity = -1;
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int ramdisk_read_sectors(IF_MD(int drive,)
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sector_t start,
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int count,
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void* buf)
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{
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#ifdef HAVE_MULTIDRIVE
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(void)drive; /* unused for now */
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#endif
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if(start+count>NUM_SECTORS)
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{
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return -1;
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}
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memcpy(buf,&ramdisk[start*SECTOR_SIZE],count*SECTOR_SIZE);
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return 0;
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}
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int ramdisk_write_sectors(IF_MD(int drive,)
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sector_t start,
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int count,
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const void* buf)
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{
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#ifdef HAVE_MULTIDRIVE
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(void)drive; /* unused for now */
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#endif
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if(start+count>NUM_SECTORS)
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{
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return -1;
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}
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memcpy(&ramdisk[start*SECTOR_SIZE],buf,count*SECTOR_SIZE);
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return 0;
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}
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int ramdisk_init(void)
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{
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return 0;
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}
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long ramdisk_last_disk_activity(void)
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{
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return last_disk_activity;
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}
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void ramdisk_sleep(void)
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{
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}
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void ramdisk_spin(void)
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{
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}
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void ramdisk_sleepnow(void)
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{
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}
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void ramdisk_enable(bool on)
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{
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(void)on;
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}
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bool ramdisk_disk_is_active(void)
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{
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return true;
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}
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int ramdisk_soft_reset(void)
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{
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return 0;
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}
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int ramdisk_spinup_time(void)
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{
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return 0;
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}
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void ramdisk_spindown(int seconds)
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{
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(void)seconds;
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}
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#ifdef STORAGE_GET_INFO
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void ramdisk_get_info(IF_MD(int drive,) struct storage_info *info)
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{
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#ifdef HAVE_MULTIDRIVE
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(void)drive; /* unused for now */
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#endif
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/* firmware version */
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info->revision="0.00";
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/* vendor field, need better name? */
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info->vendor="Rockbox";
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/* model field, need better name? */
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info->product="Ramdisk";
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/* blocks count */
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info->num_sectors=NUM_SECTORS;
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info->sector_size=SECTOR_SIZE;
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}
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#endif
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#ifdef CONFIG_STORAGE_MULTI
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int ramdisk_num_drives(int first_drive)
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{
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/* We don't care which logical drive number(s) we have been assigned */
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(void)first_drive;
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return 1;
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}
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#endif
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#ifdef HAVE_HOTSWAP
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bool ramdisk_removable(IF_MD(int drive))
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{
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#ifdef HAVE_MULTIDRIVE
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(void)drive; /* unused for now */
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#endif
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return false;
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}
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bool ramdisk_present(IF_MD(int drive))
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{
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#ifdef HAVE_MULTIDRIVE
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(void)drive; /* unused for now */
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#endif
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return true;
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}
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#endif
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int ramdisk_event(long id, intptr_t data)
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{
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return storage_event_default_handler(id, data, last_disk_activity,
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STORAGE_RAMDISK);
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}
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