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97 lines
3.3 KiB
C
97 lines
3.3 KiB
C
/*
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io_m3cf.c based on
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compact_flash.c
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By chishm (Michael Chisholm)
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Hardware Routines for reading a compact flash card
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using the M3 Perfect CF Adapter
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CF routines modified with help from Darkfader
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Copyright (c) 2006 Michael "Chishm" Chisholm
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "io_m3cf.h"
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#include "io_m3_common.h"
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#include "io_cf_common.h"
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//---------------------------------------------------------------
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// DMA
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#ifdef _IO_USE_DMA
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#ifndef NDS
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#include "gba_dma.h"
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#else
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#include <nds/dma.h>
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#ifdef ARM9
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#include <nds/arm9/cache.h>
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#endif
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#endif
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#endif
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//---------------------------------------------------------------
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// M3 CF Addresses
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#define REG_M3CF_STS ((vu16*)0x080C0000) // Status of the CF Card / Device control
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#define REG_M3CF_CMD ((vu16*)0x088E0000) // Commands sent to control chip and status return
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#define REG_M3CF_ERR ((vu16*)0x08820000) // Errors / Features
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#define REG_M3CF_SEC ((vu16*)0x08840000) // Number of sector to transfer
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#define REG_M3CF_LBA1 ((vu16*)0x08860000) // 1st byte of sector address
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#define REG_M3CF_LBA2 ((vu16*)0x08880000) // 2nd byte of sector address
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#define REG_M3CF_LBA3 ((vu16*)0x088A0000) // 3rd byte of sector address
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#define REG_M3CF_LBA4 ((vu16*)0x088C0000) // last nibble of sector address | 0xE0
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#define REG_M3CF_DATA ((vu16*)0x08800000) // Pointer to buffer of CF data transered from card
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static const CF_REGISTERS _M3CF_Registers = {
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REG_M3CF_DATA,
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REG_M3CF_STS,
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REG_M3CF_CMD,
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REG_M3CF_ERR,
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REG_M3CF_SEC,
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REG_M3CF_LBA1,
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REG_M3CF_LBA2,
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REG_M3CF_LBA3,
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REG_M3CF_LBA4
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};
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bool _M3CF_startup(void) {
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_M3_changeMode (M3_MODE_MEDIA);
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return _CF_startup (&_M3CF_Registers);
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}
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const IO_INTERFACE _io_m3cf = {
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DEVICE_TYPE_M3CF,
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FEATURE_MEDIUM_CANREAD | FEATURE_MEDIUM_CANWRITE | FEATURE_SLOT_GBA,
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(FN_MEDIUM_STARTUP)&_M3CF_startup,
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(FN_MEDIUM_ISINSERTED)&_CF_isInserted,
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(FN_MEDIUM_READSECTORS)&_CF_readSectors,
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(FN_MEDIUM_WRITESECTORS)&_CF_writeSectors,
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(FN_MEDIUM_CLEARSTATUS)&_CF_clearStatus,
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(FN_MEDIUM_SHUTDOWN)&_CF_shutdown
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} ;
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