mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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125 lines
3.7 KiB
C++
125 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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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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#include <stratosphere.hpp>
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#include "htclow_usb_driver.hpp"
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#include "htclow_usb_impl.hpp"
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namespace ams::htclow::driver {
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void UsbDriver::OnUsbAvailabilityChange(UsbAvailability availability, void *param) {
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/* Convert the argument to a driver. */
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UsbDriver *driver = static_cast<UsbDriver *>(param);
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/* Handle the change. */
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switch (availability) {
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case UsbAvailability_Unavailable:
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CancelUsbSendReceive();
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break;
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case UsbAvailability_Available:
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driver->m_event.Signal();
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break;
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case UsbAvailability_Unknown:
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driver->CancelSendReceive();
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break;
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}
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}
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Result UsbDriver::Open() {
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/* Clear our event. */
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m_event.Clear();
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/* Set the availability change callback. */
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SetUsbAvailabilityChangeCallback(OnUsbAvailabilityChange, this);
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/* Initialize the interface. */
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return InitializeUsbInterface();
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}
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void UsbDriver::Close() {
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/* Finalize the interface. */
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FinalizeUsbInterface();
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/* Clear the availability callback. */
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ClearUsbAvailabilityChangeCallback();
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}
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Result UsbDriver::Connect(os::EventType *event) {
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/* We must not already be connected. */
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AMS_ABORT_UNLESS(!m_connected);
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/* Perform a wait on our event. */
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const int idx = os::WaitAny(m_event.GetBase(), event);
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R_UNLESS(idx == 0, htclow::ResultCancelled());
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/* Clear our event. */
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m_event.Clear();
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/* We're connected. */
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m_connected = true;
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return ResultSuccess();
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}
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void UsbDriver::Shutdown() {
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/* If we're connected, cancel anything we're doing. */
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if (m_connected) {
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this->CancelSendReceive();
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m_connected = false;
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}
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}
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Result UsbDriver::Send(const void *src, int src_size) {
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/* Check size. */
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R_UNLESS(src_size >= 0, htclow::ResultInvalidArgument());
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/* Send until we've sent everything. */
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for (auto transferred = 0; transferred < src_size; /* ... */) {
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int cur;
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R_TRY(SendUsb(std::addressof(cur), reinterpret_cast<const void *>(reinterpret_cast<uintptr_t>(src) + transferred), src_size - transferred));
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transferred += cur;
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}
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return ResultSuccess();
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}
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Result UsbDriver::Receive(void *dst, int dst_size) {
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/* Check size. */
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R_UNLESS(dst_size >= 0, htclow::ResultInvalidArgument());
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/* Send until we've sent everything. */
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for (auto transferred = 0; transferred < dst_size; /* ... */) {
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int cur;
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R_TRY(ReceiveUsb(std::addressof(cur), reinterpret_cast<void *>(reinterpret_cast<uintptr_t>(dst) + transferred), dst_size - transferred));
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transferred += cur;
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}
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return ResultSuccess();
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}
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void UsbDriver::CancelSendReceive() {
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CancelUsbSendReceive();
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}
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void UsbDriver::Suspend() {
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this->Close();
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}
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void UsbDriver::Resume() {
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R_ABORT_UNLESS(this->Open());
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}
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}
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