117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
/*
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* Copyright (c) 2015 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include <dev/usbc.h>
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#include <dev/usb.h>
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#include <kernel/spinlock.h>
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#include "transport.hpp"
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#include <lib/cpputils/nocopy.hpp>
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namespace mocom {
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class usb_transport : public transport {
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public:
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usb_transport();
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virtual ~usb_transport();
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virtual status_t init() override;
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virtual lk_time_t do_work() override;
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private:
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// in/out endpoints
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ep_t m_inep;
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ep_t m_outep;
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uint m_interface_num;
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enum {
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STATE_LISTEN,
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STATE_SYNSENT,
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STATE_ESTABLISHED,
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} m_state;
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volatile bool m_online;
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// transfer lock
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spin_lock_t lock;
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static const size_t USB_TRANSFER_LEN = 4096;
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// rx transfers
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bool m_rx_transfer_queued;
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usbc_transfer_t m_rx_transfer;
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uint8_t *m_rx_buffer = nullptr;
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// tx transfers
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bool m_tx_transfer_queued;
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usbc_transfer_t m_tx_transfer;
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uint8_t *m_tx_buffer = nullptr;
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uint32_t m_txid;
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uint32_t m_rxid;
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lk_time_t m_last_tx_time;
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// usb layer callbacks
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status_t usb_cb(usb_callback_op_t op, const union usb_callback_args *args);
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status_t ep_cb_rx(ep_t endpoint, usbc_transfer_t *t);
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status_t ep_cb_tx(ep_t endpoint, usbc_transfer_t *t);
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static status_t usb_cb_static(void *cookie, usb_callback_op_t op, const union usb_callback_args *args);
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static status_t ep_cb_rx_static(ep_t endpoint, usbc_transfer_t *t);
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static status_t ep_cb_tx_static(ep_t endpoint, usbc_transfer_t *t);
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// internal routines
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bool prepare_tx_packet();
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bool handle_rx_packet(const uint8_t *buf, size_t len);
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// no copy
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usb_transport(const usb_transport &);
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usb_transport& operator=(const usb_transport &);
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};
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inline status_t usb_transport::usb_cb_static(void *cookie, usb_callback_op_t op, const union usb_callback_args *args) {
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usb_transport *t = static_cast<usb_transport *>(cookie);
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return t->usb_cb(op, args);
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}
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inline status_t usb_transport::ep_cb_rx_static(ep_t endpoint, usbc_transfer_t *t)
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{
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usb_transport *_t = static_cast<usb_transport *>(t->extra);
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return _t->ep_cb_rx(endpoint, t);
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}
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inline status_t usb_transport::ep_cb_tx_static(ep_t endpoint, usbc_transfer_t *t)
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{
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usb_transport *_t = static_cast<usb_transport *>(t->extra);
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return _t->ep_cb_tx(endpoint, t);
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}
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inline transport *create_usb_transport()
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{
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usb_transport *u = new usb_transport();
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return u;
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}
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}
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