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Diffstat (limited to 'tmk_core/protocol/arm_atsam/usb/udd.h')
| -rw-r--r-- | tmk_core/protocol/arm_atsam/usb/udd.h | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/tmk_core/protocol/arm_atsam/usb/udd.h b/tmk_core/protocol/arm_atsam/usb/udd.h new file mode 100644 index 000000000..b580e5847 --- /dev/null +++ b/tmk_core/protocol/arm_atsam/usb/udd.h @@ -0,0 +1,396 @@ +/** + * \file + * + * \brief Common API for USB Device Drivers (UDD) + * + * Copyright (c) 2009-2015 Atmel Corporation. All rights reserved. + * + * \asf_license_start + * + * \page License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an + * Atmel microcontroller product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * \asf_license_stop + * + */ +/* + * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> + */ + +#ifndef _UDD_H_ +#define _UDD_H_ + +#include "usb_protocol.h" +#include "udc_desc.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \ingroup usb_device_group + * \defgroup udd_group USB Device Driver (UDD) + * + * The UDD driver provides a low-level abstraction of the device + * controller hardware. Most events coming from the hardware such as + * interrupts, which may cause the UDD to call into the UDC and UDI. + * + * @{ + */ + +//! \brief Endpoint identifier +typedef uint8_t udd_ep_id_t; + +//! \brief Endpoint transfer status +//! Returned in parameters of callback register via udd_ep_run routine. +typedef enum { + UDD_EP_TRANSFER_OK = 0, + UDD_EP_TRANSFER_ABORT = 1, +} udd_ep_status_t; + +/** + * \brief Global variable to give and record information of the setup request management + * + * This global variable allows to decode and response a setup request. + * It can be updated by udc_process_setup() from UDC or *setup() from UDIs. + */ +typedef struct { + //! Data received in USB SETUP packet + //! Note: The swap of "req.wValues" from uin16_t to le16_t is done by UDD. + usb_setup_req_t req; + + //! Point to buffer to send or fill with data following SETUP packet + //! This buffer must be word align for DATA IN phase (use prefix COMPILER_WORD_ALIGNED for buffer) + uint8_t *payload; + + //! Size of buffer to send or fill, and content the number of byte transfered + uint16_t payload_size; + + //! Callback called after reception of ZLP from setup request + void (*callback) (void); + + //! Callback called when the buffer given (.payload) is full or empty. + //! This one return false to abort data transfer, or true with a new buffer in .payload. + bool(*over_under_run) (void); +} udd_ctrl_request_t; +extern udd_ctrl_request_t udd_g_ctrlreq; + +//! Return true if the setup request \a udd_g_ctrlreq indicates IN data transfer +#define Udd_setup_is_in() \ + (USB_REQ_DIR_IN == (udd_g_ctrlreq.req.bmRequestType & USB_REQ_DIR_MASK)) + +//! Return true if the setup request \a udd_g_ctrlreq indicates OUT data transfer +#define Udd_setup_is_out() \ + (USB_REQ_DIR_OUT == (udd_g_ctrlreq.req.bmRequestType & USB_REQ_DIR_MASK)) + +//! Return the type of the SETUP request \a udd_g_ctrlreq. \see usb_reqtype. +#define Udd_setup_type() \ + (udd_g_ctrlreq.req.bmRequestType & USB_REQ_TYPE_MASK) + +//! Return the recipient of the SETUP request \a udd_g_ctrlreq. \see usb_recipient +#define Udd_setup_recipient() \ + (udd_g_ctrlreq.req.bmRequestType & USB_REQ_RECIP_MASK) + +/** + * \brief End of halt callback function type. + * Registered by routine udd_ep_wait_stall_clear() + * Callback called when endpoint stall is cleared. + */ +typedef void (*udd_callback_halt_cleared_t) (void); + +/** + * \brief End of transfer callback function type. + * Registered by routine udd_ep_run() + * Callback called by USB interrupt after data transfer or abort (reset,...). + * + * \param status UDD_EP_TRANSFER_OK, if transfer is complete + * \param status UDD_EP_TRANSFER_ABORT, if transfer is aborted + * \param n number of data transfered + */ +typedef void (*udd_callback_trans_t) (udd_ep_status_t status, + iram_size_t nb_transfered, udd_ep_id_t ep); + +/** + * \brief Authorizes the VBUS event + * + * \return true, if the VBUS monitoring is possible. + */ +bool udd_include_vbus_monitoring(void); + +/** + * \brief Enables the USB Device mode + */ +void udd_enable(void); + +/** + * \brief Disables the USB Device mode + */ +void udd_disable(void); + +/** + * \brief Attach device to the bus when possible + * + * \warning If a VBus control is included in driver, + * then it will attach device when an acceptable Vbus + * level from the host is detected. + */ +void udd_attach(void); + +/** + * \brief Detaches the device from the bus + * + * The driver must remove pull-up on USB line D- or D+. + */ +void udd_detach(void); + +/** + * \brief Test whether the USB Device Controller is running at high + * speed or not. + * + * \return \c true if the Device is running at high speed mode, otherwise \c false. + */ +bool udd_is_high_speed(void); + +/** + * \brief Changes the USB address of device + * + * \param address New USB address + */ +void udd_set_address(uint8_t address); + +/** + * \brief Returns the USB address of device + * + * \return USB address + */ +uint8_t udd_getaddress(void); + +/** + * \brief Returns the current start of frame number + * + * \return current start of frame number. + */ +uint16_t udd_get_frame_number(void); + +/** + * \brief Returns the current micro start of frame number + * + * \return current micro start of frame number required in high speed mode. + */ +uint16_t udd_get_micro_frame_number(void); + +/*! \brief The USB driver sends a resume signal called Upstream Resume + */ +void udd_send_remotewakeup(void); + +/** + * \brief Load setup payload + * + * \param payload Pointer on payload + * \param payload_size Size of payload + */ +void udd_set_setup_payload( uint8_t *payload, uint16_t payload_size ); + + +/** + * \name Endpoint Management + * + * The following functions allow drivers to create and remove + * endpoints, as well as set, clear and query their "halted" and + * "wedged" states. + */ +//@{ + +#if (USB_DEVICE_MAX_EP != 0) + +/** + * \brief Configures and enables an endpoint + * + * \param ep Endpoint number including direction (USB_EP_DIR_IN/USB_EP_DIR_OUT). + * \param bmAttributes Attributes of endpoint declared in the descriptor. + * \param MaxEndpointSize Endpoint maximum size + * + * \return \c 1 if the endpoint is enabled, otherwise \c 0. + */ +bool udd_ep_alloc(udd_ep_id_t ep, uint8_t bmAttributes, + uint16_t MaxEndpointSize); + +/** + * \brief Disables an endpoint + * + * \param ep Endpoint number including direction (USB_EP_DIR_IN/USB_EP_DIR_OUT). + */ +void udd_ep_free(udd_ep_id_t ep); + +/** + * \brief Check if the endpoint \a ep is halted. + * + * \param ep The ID of the endpoint to check. + * + * \return \c 1 if \a ep is halted, otherwise \c 0. + */ +bool udd_ep_is_halted(udd_ep_id_t ep); + +/** + * \brief Set the halted state of the endpoint \a ep + * + * After calling this function, any transaction on \a ep will result + * in a STALL handshake being sent. Any pending transactions will be + * performed first, however. + * + * \param ep The ID of the endpoint to be halted + * + * \return \c 1 if \a ep is halted, otherwise \c 0. + */ +bool udd_ep_set_halt(udd_ep_id_t ep); + +/** + * \brief Clear the halted state of the endpoint \a ep + * + * After calling this function, any transaction on \a ep will + * be handled normally, i.e. a STALL handshake will not be sent, and + * the data toggle sequence will start at DATA0. + * + * \param ep The ID of the endpoint to be un-halted + * + * \return \c 1 if function was successfully done, otherwise \c 0. + */ +bool udd_ep_clear_halt(udd_ep_id_t ep); + +/** + * \brief Registers a callback to call when endpoint halt is cleared + * + * \param ep The ID of the endpoint to use + * \param callback NULL or function to call when endpoint halt is cleared + * + * \warning if the endpoint is not halted then the \a callback is called immediately. + * + * \return \c 1 if the register is accepted, otherwise \c 0. + */ +bool udd_ep_wait_stall_clear(udd_ep_id_t ep, + udd_callback_halt_cleared_t callback); + +/** + * \brief Allows to receive or send data on an endpoint + * + * The driver uses a specific DMA USB to transfer data + * from internal RAM to endpoint, if this one is available. + * When the transfer is finished or aborted (stall, reset, ...), the \a callback is called. + * The \a callback returns the transfer status and eventually the number of byte transfered. + * Note: The control endpoint is not authorized. + * + * \param ep The ID of the endpoint to use + * \param b_shortpacket Enabled automatic short packet + * \param buf Buffer on Internal RAM to send or fill. + * It must be align, then use COMPILER_WORD_ALIGNED. + * \param buf_size Buffer size to send or fill + * \param callback NULL or function to call at the end of transfer + * + * \warning About \a b_shortpacket, for IN endpoint it means that a short packet + * (or a Zero Length Packet) will be sent to the USB line to properly close the usb + * transfer at the end of the data transfer. + * For Bulk and Interrupt OUT endpoint, it will automatically stop the transfer + * at the end of the data transfer (received short packet). + * + * \return \c 1 if function was successfully done, otherwise \c 0. + */ +bool udd_ep_run(udd_ep_id_t ep, bool b_shortpacket, + uint8_t *buf, iram_size_t buf_size, + udd_callback_trans_t callback); +/** + * \brief Aborts transfer on going on endpoint + * + * If a transfer is on going, then it is stopped and + * the callback registered is called to signal the end of transfer. + * Note: The control endpoint is not authorized. + * + * \param ep Endpoint to abort + */ +void udd_ep_abort(udd_ep_id_t ep); + +#endif + +//@} + + +/** + * \name High speed test mode management + * + * The following functions allow the device to jump to a specific test mode required in high speed mode. + */ +//@{ +void udd_test_mode_j(void); +void udd_test_mode_k(void); +void udd_test_mode_se0_nak(void); +void udd_test_mode_packet(void); +//@} + + +/** + * \name UDC callbacks to provide for UDD + * + * The following callbacks are used by UDD. + */ +//@{ + +/** + * \brief Decodes and manages a setup request + * + * The driver call it when a SETUP packet is received. + * The \c udd_g_ctrlreq contains the data of SETUP packet. + * If this callback accepts the setup request then it must + * return \c 1 and eventually update \c udd_g_ctrlreq to send or receive data. + * + * \return \c 1 if the request is accepted, otherwise \c 0. + */ +extern bool udc_process_setup(void); + +/** + * \brief Reset the UDC + * + * The UDC must reset all configuration. + */ +extern void udc_reset(void); + +/** + * \brief To signal that a SOF is occurred + * + * The UDC must send the signal to all UDIs enabled + */ +extern void udc_sof_notify(void); + +//@} + +//@} + +#ifdef __cplusplus +} +#endif +#endif // _UDD_H_ |