mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-09-09 17:13:20 +02:00
187 lines
3.9 KiB
C
187 lines
3.9 KiB
C
/*-------------------------------------------------------------
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usbstorage_starlet.c -- USB mass storage support, inside starlet
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Copyright (C) 2009 Kwiirk
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If this driver is linked before libogc, this will replace the original
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usbstorage driver by svpe from libogc
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you
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must not claim that you wrote the original software. If you use
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this software in a product, an acknowledgment in the product
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documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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-------------------------------------------------------------*/
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#include <gccore.h>
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#include <malloc.h>
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#include <stdio.h>
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#include <string.h>
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/* IOCTL commands */
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#define UMS_BASE (('U'<<24)|('M'<<16)|('S'<<8))
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#define USB_IOCTL_UMS_INIT (UMS_BASE+0x1)
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#define USB_IOCTL_UMS_GET_CAPACITY (UMS_BASE+0x2)
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#define USB_IOCTL_UMS_READ_SECTORS (UMS_BASE+0x3)
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#define USB_IOCTL_UMS_WRITE_SECTORS (UMS_BASE+0x4)
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#define USB_IOCTL_UMS_READ_STRESS (UMS_BASE+0x5)
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#define USB_IOCTL_UMS_SET_VERBOSE (UMS_BASE+0x6)
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#define UMS_HEAPSIZE 0x8000
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/* Variables */
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static char fs[] ATTRIBUTE_ALIGN(32) = "/dev/usb/ehc";
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static s32 hid = -1, fd = -1;
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static u32 sector_size;
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inline s32 __USBStorage_isMEM2Buffer(const void *buffer)
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{
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u32 high_addr = ((u32)buffer) >> 24;
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return (high_addr == 0x90) || (high_addr == 0xD0);
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}
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s32 USBStorage_GetCapacity(u32 *_sector_size)
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{
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if (fd > 0) {
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s32 ret;
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ret = IOS_IoctlvFormat(hid, fd, USB_IOCTL_UMS_GET_CAPACITY, ":i", §or_size);
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if (ret && _sector_size)
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*_sector_size = sector_size;
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return ret;
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}
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return IPC_ENOENT;
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}
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s32 USBStorage_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 0;
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/* Create heap */
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if (hid < 0) {
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hid = iosCreateHeap(UMS_HEAPSIZE);
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if (hid < 0)
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return IPC_ENOMEM;
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}
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/* Open USB device */
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fd = IOS_Open(fs, 0);
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if (fd < 0)
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return fd;
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/* Initialize USB storage */
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IOS_IoctlvFormat(hid, fd, USB_IOCTL_UMS_INIT, ":");
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/* Get device capacity */
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ret = USBStorage_GetCapacity(NULL);
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if (!ret)
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goto err;
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return 0;
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err:
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/* Close USB 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 -1;
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}
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void USBStorage_Deinit(void)
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{
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/* Close USB 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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}
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s32 USBStorage_ReadSectors(u32 sector, u32 numSectors, void *buffer)
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{
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void *buf = (void *)buffer;
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u32 len = (sector_size * numSectors);
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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 fd;
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/* MEM1 buffer */
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if (!__USBStorage_isMEM2Buffer(buffer)) {
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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 IPC_ENOMEM;
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}
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/* Read data */
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ret = IOS_IoctlvFormat(hid, fd, USB_IOCTL_UMS_READ_SECTORS, "ii:d", sector, numSectors, 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;
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}
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s32 USBStorage_WriteSectors(u32 sector, u32 numSectors, const void *buffer)
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{
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void *buf = (void *)buffer;
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u32 len = (sector_size * numSectors);
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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 fd;
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/* MEM1 buffer */
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if (!__USBStorage_isMEM2Buffer(buffer)) {
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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 IPC_ENOMEM;
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/* Copy data */
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memcpy(buf, buffer, len);
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}
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/* Write data */
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ret = IOS_IoctlvFormat(hid, fd, USB_IOCTL_UMS_WRITE_SECTORS, "ii:d", sector, numSectors, 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;
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}
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