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https://github.com/Atmosphere-NX/Atmosphere.git
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63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
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/*
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* Copyright (c) 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 <haze.hpp>
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namespace haze {
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namespace {
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constinit UsbSession g_usb_session;
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}
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Result AsyncUsbServer::Initialize(const UsbCommsInterfaceInfo *interface_info, u16 id_vendor, u16 id_product, EventReactor *reactor) {
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m_reactor = reactor;
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/* Set up a new USB session. */
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R_TRY(g_usb_session.Initialize(interface_info, id_vendor, id_product));
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R_SUCCEED();
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}
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void AsyncUsbServer::Finalize() {
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g_usb_session.Finalize();
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}
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Result AsyncUsbServer::TransferPacketImpl(bool read, void *page, u32 size, u32 *out_size_transferred) const {
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u32 urb_id;
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s32 waiter_idx;
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/* If we're not configured yet, wait to become configured first. */
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if (!g_usb_session.GetConfigured()) {
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R_TRY(m_reactor->WaitFor(std::addressof(waiter_idx), waiterForEvent(usbDsGetStateChangeEvent())));
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R_TRY(eventClear(usbDsGetStateChangeEvent()));
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R_THROW(haze::ResultNotConfigured());
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}
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/* Select the appropriate endpoint and begin a transfer. */
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UsbSessionEndpoint ep = read ? UsbSessionEndpoint_Read : UsbSessionEndpoint_Write;
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R_TRY(g_usb_session.TransferAsync(ep, page, size, std::addressof(urb_id)));
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/* Try to wait for the event. */
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R_TRY(m_reactor->WaitFor(std::addressof(waiter_idx), waiterForEvent(g_usb_session.GetCompletionEvent(ep))));
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/* Return what we transferred. */
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R_RETURN(g_usb_session.GetTransferResult(ep, urb_id, out_size_transferred));
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}
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}
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