mirror of
https://github.com/suchmememanyskill/TegraExplorer.git
synced 2024-12-29 12:56:02 +00:00
136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
/*
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* Copyright (c) 2019-2020 shchmue
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2016 */
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/*-----------------------------------------------------------------------*/
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/* If a working storage control module is available, it should be */
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/* attached to the FatFs via a glue function rather than modifying it. */
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/* This is an example of glue functions to attach various exsisting */
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/* storage control modules to the FatFs module with a defined API. */
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/*-----------------------------------------------------------------------*/
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#include <string.h>
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#include <libs/fatfs/diskio.h> /* FatFs lower layer API */
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#include <memory_map.h>
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#include <storage/nx_sd.h>
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#include "../../storage/nx_emmc_bis.h"
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#include <storage/sdmmc.h>
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/*-----------------------------------------------------------------------*/
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/* Get Drive Status */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_status (
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BYTE pdrv /* Physical drive number to identify the drive */
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)
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{
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE pdrv /* Physical drive number to identify the drive */
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)
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{
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_read (
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BYTE pdrv, /* Physical drive number to identify the drive */
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BYTE *buff, /* Data buffer to store read data */
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DWORD sector, /* Start sector in LBA */
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UINT count /* Number of sectors to read */
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)
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{
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switch (pdrv)
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{
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case DRIVE_SD:
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return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR;
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case DRIVE_BIS:
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return nx_emmc_bis_read(sector, count, buff);
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}
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return RES_ERROR;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_write (
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BYTE pdrv, /* Physical drive number to identify the drive */
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const BYTE *buff, /* Data to be written */
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DWORD sector, /* Start sector in LBA */
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UINT count /* Number of sectors to write */
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)
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{
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switch (pdrv)
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{
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case DRIVE_SD:
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return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
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case DRIVE_BIS:
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return nx_emmc_bis_write(sector, count, (void *)buff);
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}
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return RES_ERROR;
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}
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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/*-----------------------------------------------------------------------*/
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static u32 part_rsvd_size = 0;
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DRESULT disk_ioctl (
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BYTE pdrv, /* Physical drive nmuber (0..) */
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BYTE cmd, /* Control code */
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void *buff /* Buffer to send/receive control data */
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)
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{
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DWORD *buf = (DWORD *)buff;
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if (pdrv == DRIVE_SD)
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{
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switch (cmd)
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{
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case GET_SECTOR_COUNT:
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*buf = sd_storage.sec_cnt - part_rsvd_size;
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break;
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case GET_BLOCK_SIZE:
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*buf = 32768; // Align to 16MB.
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break;
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}
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}
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else if (pdrv == DRIVE_RAM)
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{
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switch (cmd)
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{
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case GET_SECTOR_COUNT:
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*buf = RAM_DISK_SZ >> 9; // 1GB.
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break;
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case GET_BLOCK_SIZE:
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*buf = 2048; // Align to 1MB.
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break;
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}
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}
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return RES_OK;
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}
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