mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-09-09 17:13:20 +02:00
160 lines
2.7 KiB
C
160 lines
2.7 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <ogcsys.h>
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#include <sdcard/wiisd_io.h>
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#include "sdhc.h"
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/* IOCTL comamnds */
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#define IOCTL_SDHC_INIT 0x01
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#define IOCTL_SDHC_READ 0x02
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#define IOCTL_SDHC_WRITE 0x03
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#define IOCTL_SDHC_ISINSERTED 0x04
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#define SDHC_HEAPSIZE 0x8000
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/* Variables */
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static char fs[] ATTRIBUTE_ALIGN(32) = "/dev/sdio/sdhc";
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static s32 hid = -1, fd = -1;
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static u32 sector_size = SDHC_SECTOR_SIZE;
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bool SDHC_Init(void)
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{
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s32 ret;
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/* Already open */
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if (fd > 0)
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return true;
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/* Create heap */
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if (hid < 0) {
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hid = iosCreateHeap(SDHC_HEAPSIZE);
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if (hid < 0)
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goto err;
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}
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/* Open SDHC device */
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fd = IOS_Open(fs, 0);
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if (fd < 0)
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goto err;
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/* Initialize SDHC */
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ret = IOS_IoctlvFormat(hid, fd, IOCTL_SDHC_INIT, ":");
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if (ret)
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goto err;
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return true;
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err:
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/* Close SDHC device */
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if (fd > 0) {
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IOS_Close(fd);
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fd = -1;
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}
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return false;
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}
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bool SDHC_Close(void)
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{
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/* Close SDHC device */
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if (fd > 0) {
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IOS_Close(fd);
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fd = -1;
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}
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return true;
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}
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bool SDHC_IsInserted(void)
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{
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s32 ret;
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/* Check if SD card is inserted */
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ret = IOS_IoctlvFormat(hid, fd, IOCTL_SDHC_ISINSERTED, ":");
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return (!ret) ? true : false;
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}
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bool SDHC_ReadSectors(u32 sector, u32 count, void *buffer)
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{
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void *buf = (void *)buffer;
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u32 len = (sector_size * count);
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s32 ret;
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/* Device not opened */
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if (fd < 0)
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return false;
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/* Buffer not aligned */
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if ((u32)buffer & 0x1F) {
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/* Allocate memory */
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buf = iosAlloc(hid, len);
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if (!buf)
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return false;
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}
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/* Read data */
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ret = IOS_IoctlvFormat(hid, fd, IOCTL_SDHC_READ, "ii:d", sector, count, buf, len);
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/* Copy data */
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if (buf != buffer) {
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memcpy(buffer, buf, len);
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iosFree(hid, buf);
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}
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return (!ret) ? true : false;
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}
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bool SDHC_WriteSectors(u32 sector, u32 count, void *buffer)
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{
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void *buf = (void *)buffer;
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u32 len = (sector_size * count);
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s32 ret;
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/* Device not opened */
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if (fd < 0)
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return false;
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/* Buffer not aligned */
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if ((u32)buffer & 0x1F) {
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/* Allocate memory */
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buf = iosAlloc(hid, len);
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if (!buf)
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return false;
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/* Copy data */
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memcpy(buf, buffer, len);
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}
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/* Read data */
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ret = IOS_IoctlvFormat(hid, fd, IOCTL_SDHC_WRITE, "ii:d", sector, count, buf, len);
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/* Free memory */
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if (buf != buffer)
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iosFree(hid, buf);
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return (!ret) ? true : false;
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}
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bool SDHC_ClearStatus(void)
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{
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return true;
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}
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const DISC_INTERFACE __io_sdhc = {
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DEVICE_TYPE_WII_SD,
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FEATURE_MEDIUM_CANREAD | FEATURE_MEDIUM_CANWRITE | FEATURE_WII_SD,
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(FN_MEDIUM_STARTUP)&SDHC_Init,
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(FN_MEDIUM_ISINSERTED)&SDHC_IsInserted,
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(FN_MEDIUM_READSECTORS)&SDHC_ReadSectors,
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(FN_MEDIUM_WRITESECTORS)&SDHC_WriteSectors,
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(FN_MEDIUM_CLEARSTATUS)&SDHC_ClearStatus,
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(FN_MEDIUM_SHUTDOWN)&SDHC_Close
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};
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