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nxdumptool/source/usb.h
Pablo Curiel ad401d559d New template: threaded gamecard dumper via USB.
Key area and certificate can be optionally appended and/or preserved, respectively. Trimming is supported.

Also added a bunch of ZLT packet related fixes to usb.c, as well as a function to properly cancel an ongoing file transfer.
2020-08-13 02:01:23 -04:00

57 lines
2.5 KiB
C

/*
* usb.h
*
* Heavily based in usb_comms from libnx.
*
* Copyright (c) 2018-2020, Switchbrew and libnx contributors.
* Copyright (c) 2020, DarkMatterCore <pabloacurielz@gmail.com>.
*
* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
*
* nxdumptool is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* nxdumptool is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#ifndef __USB_H__
#define __USB_H__
#define USB_TRANSFER_BUFFER_SIZE 0x800000 /* 8 MiB. */
/// Initializes the USB interface, input and output endpoints and allocates an internal transfer buffer.
bool usbInitialize(void);
/// Closes the USB interface, input and output endpoints and frees the transfer buffer.
void usbExit(void);
/// Returns a pointer to a heap-allocated, page-aligned memory buffer that's suitable for USB transfers.
void *usbAllocatePageAlignedBuffer(size_t size);
/// Used to check if the console has been connected to an USB host device and if a valid USB session has been established.
/// Bear in mind this call will block the calling thread if the console is connected to an USB host device but no USB session has been established.
/// If the console is disconnected during this block, the function will return false.
/// If the console isn't connected to an USB host device when this function is called, false will be returned right away.
bool usbIsReady(void);
/// Sends file properties to the host device before starting a file data transfer. Must be called before usbSendFileData().
bool usbSendFileProperties(u64 file_size, const char *filename);
/// Performs a file data transfer. Must be continuously called after usbSendFileProperties() until all file data has been transferred.
/// Data chunk size must not exceed USB_TRANSFER_BUFFER_SIZE.
bool usbSendFileData(void *data, u64 data_size);
/// Used to cancel an ongoing file transfer by stalling the input (write) USB endpoint.
/// A new USB session must be established afterwards if USB communication with a host device is required.
void usbCancelFileTransfer(void);
#endif /* __USB_H__ */