140 lines
4.0 KiB
C
140 lines
4.0 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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/**
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* @file templates/mac_lld.c
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* @brief MAC Driver subsystem low level driver source template
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* @addtogroup MAC_LLD
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* @{
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*/
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#include <ch.h>
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#include <mac.h>
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/**
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* @brief Low level MAC initialization.
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*/
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void mac_lld_init(void) {
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}
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/**
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* @brief Low level MAC address setup.
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*
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* @param[in] macp pointer to the @p MACDriver object
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* @param[in] p pointer to a six bytes buffer containing the MAC address. If
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* this parameter is set to @p NULL then a system default MAC is
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* used.
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*/
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void mac_lld_set_address(MACDriver *macp, const uint8_t *p) {
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}
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/**
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* @brief Returns a transmission descriptor.
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* @details One of the available transmission descriptors is locked and
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* returned.
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*
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* @param[in] macp pointer to the @p MACDriver object
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* @param[in] size size of the frame to be transmitted
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* @return A pointer to a @p MACTransmitDescriptor structure or @p NULL if
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* a descriptor is not available.
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*/
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MACTransmitDescriptor *max_lld_get_transmit_descriptor(MACDriver *macp,
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size_t size) {
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return NULL;
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}
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/**
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* @brief Releases a transmit descriptor and starts the transmission of the
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* enqueued data as a single frame.
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*
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* @param[in] macp pointer to the @p MACDriver object
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* @param[in] tdp the pointer to the @p MACTransmitDescriptor structure
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*/
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void mac_lld_release_transmit_descriptor(MACDriver *macp,
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MACTransmitDescriptor *tdp) {
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}
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/**
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* @brief Returns the buffer associated to a @p MACTransmitDescriptor.
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*
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* @param[in] tdp the pointer to the @p MACTransmitDescriptor structure
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* @return The pointer to the transmit buffer.
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*/
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uint8_t *mac_lld_get_transmit_buffer(MACTransmitDescriptor *tdp) {
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return NULL;
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}
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/**
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* @brief Returns a received frame.
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*
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* @param[in] macp pointer to the @p MACDriver object
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* @param[out szp size of the received frame
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* @return A pointer to a @p MACReceiveDescriptor structure or @p NULL if
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* the operation timed out or some transient error happened.
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*/
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MACReceiveDescriptor *max_lld_get_receive_descriptor(MACDriver *macp,
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size_t *szp) {
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return NULL;
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}
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/**
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* @brief Releases a receive descriptor.
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* @details The descriptor and its buffer is made available for more incoming
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* frames.
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*
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* @param[in] macp pointer to the @p MACDriver object
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* @param[in] rdp the pointer to the @p MACReceiveDescriptor structure
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*/
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void mac_lld_release_receive_descriptor(MACDriver *macp,
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MACReceiveDescriptor *rdp) {
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}
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/**
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* @brief Returns the buffer associated to a @p MACTransmitDescriptor.
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*
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* @param[in] tdp the pointer to the @p MACTransmitDescriptor structure
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* @return The pointer to the transmit buffer.
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*/
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uint8_t *mac_lld_get_receive_buffer(MACReceiveDescriptor *rdp) {
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return NULL;
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}
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/**
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* @brief Updates and returns the link status.
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*
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* @param[in] macp pointer to the @p MACDriver object
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* @return The link status.
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* @retval TRUE if the link is active.
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* @retval FALSE if the link is down.
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*/
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bool_t mac_lld_poll_link_status(MACDriver *macp) {
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return FALSE;
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}
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/** @} */
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