openwrt/upstream - upstream openwrt

	Commit message (Expand)	Author	Age	Files	Lines
*	Add 'subversion' build dependency to README	Felix Fietkau	2014-08-31	1	-2/+2
*	build: BSD compile fixes	Felix Fietkau	2013-03-07	1	-2/+2
*	Update README file	Mirko Vogt	2013-03-06	1	-2/+3
*	trying to make README file a bit more helpful	Mirko Vogt	2012-01-21	1	-6/+14
*	remove bison requirement (see [10398] & [14900])	Nicolas Thill	2010-03-05	1	-1/+1
*	change readme to point to scripts/flashing/flash.sh instead of scripts/flash.sh	Felix Fietkau	2008-12-31	1	-2/+2
*	add information about the tex4ht requirement for the docs	Felix Fietkau	2007-02-26	1	-1/+1
*	Update the README to something more realistic	Florian Fainelli	2007-01-05	1	-2/+4
*	finally move buildroot-ng to trunk	Felix Fietkau	2016-03-20	1	-0/+24

/* ChibiOS/HAL - Copyright (C) 2006-2014 Giovanni Di Sirio Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ /** * @file mac_lld.c * @brief PLATFORM MAC subsystem low level driver source. * * @addtogroup MAC * @{ */ #include <string.h> #include "hal.h" #if HAL_USE_MAC || defined(__DOXYGEN__) #include "mii.h" /*===========================================================================*/ /* Driver local definitions. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver exported variables. */ /*===========================================================================*/ /** * @brief MAC1 driver identifier. */ #if PLATFORM_MAC_USE_MAC1 || defined(__DOXYGEN__) MACDriver ETHD1; #endif /*===========================================================================*/ /* Driver local variables and types. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver local functions. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver interrupt handlers. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver exported functions. */ /*===========================================================================*/ /** * @brief Low level MAC initialization. * * @notapi */ void mac_lld_init(void) { #if PLATFORM_MAC_USE_MAC1 /* Driver initialization.*/ macObjectInit(&MACD1); #endif /* PLATFORM_MAC_USE_MAC1 */ } /** * @brief Configures and activates the MAC peripheral. * * @param[in] macp pointer to the @p MACDriver object * * @notapi */ void mac_lld_start(MACDriver *macp) { if (macp->state == MAC_STOP) { /* Enables the peripheral.*/ #if PLATFORM_MAC_USE_MAC1 if (&MACD1 == macp) { } #endif /* PLATFORM_MAC_USE_MAC1 */ } /* Configures the peripheral.*/ } /** * @brief Deactivates the MAC peripheral. * * @param[in] macp pointer to the @p MACDriver object * * @notapi */ void mac_lld_stop(MACDriver *macp) { if (macp->state != MAC_STOP) { /* Resets the peripheral.*/ /* Disables the peripheral.*/ #if PLATFORM_MAC_USE_MAC1 if (&MACD1 == macp) { } #endif /* PLATFORM_MAC_USE_MAC1 */ } } /** * @brief Returns a transmission descriptor. * @details One of the available transmission descriptors is locked and * returned. * * @param[in] macp pointer to the @p MACDriver object * @param[out] tdp pointer to a @p MACTransmitDescriptor structure * @return The operation status. * @retval RDY_OK the descriptor has been obtained. * @retval RDY_TIMEOUT descriptor not available. * * @notapi */ msg_t mac_lld_get_transmit_descriptor(MACDriver *macp, MACTransmitDescriptor *tdp) { (void)macp; (void)tdp; return MSG_OK; } /** * @brief Releases a transmit descriptor and starts the transmission of the * enqueued data as a single frame. * * @param[in] tdp the pointer to the @p MACTransmitDescriptor structure * * @notapi */ void mac_lld_release_transmit_descriptor(MACTransmitDescriptor *tdp) { (void)tdp; } /** * @brief Returns a receive descriptor. * * @param[in] macp pointer to the @p MACDriver object * @param[out] rdp pointer to a @p MACReceiveDescriptor structure * @return The operation status. * @retval RDY_OK the descriptor has been obtained. * @retval RDY_TIMEOUT descriptor not available. * * @notapi */ msg_t mac_lld_get_receive_descriptor(MACDriver *macp, MACReceiveDescriptor *rdp) { (void)macp; (void)rdp; return MSG_OK; } /** * @brief Releases a receive descriptor. * @details The descriptor and its buffer are made available for more incoming * frames. * * @param[in] rdp the pointer to the @p MACReceiveDescriptor structure * * @notapi */ void mac_lld_release_receive_descriptor(MACReceiveDescriptor *rdp) { (void)rdp; } /** * @brief Updates and returns the link status. * * @param[in] macp pointer to the @p MACDriver object * @return The link status. * @retval true if the link is active. * @retval false if the link is down. * * @notapi */ bool mac_lld_poll_link_status(MACDriver *macp) { (void)macp; return false; } /** * @brief Writes to a transmit descriptor's stream. * * @param[in] tdp pointer to a @p MACTransmitDescriptor structure * @param[in] buf pointer to the buffer containing the data to be * written * @param[in] size number of bytes to be written * @return The number of bytes written into the descriptor's * stream, this value can be less than the amount * specified in the parameter @p size if the maximum * frame size is reached. * * @notapi */ size_t mac_lld_write_transmit_descriptor(MACTransmitDescriptor *tdp, uint8_t *buf, size_t size) { (void)tdp; (void)buf; return size; } /** * @brief Reads from a receive descriptor's stream. * * @param[in] rdp pointer to a @p MACReceiveDescriptor structure * @param[in] buf pointer to the buffer that will receive the read data * @param[in] size number of bytes to be read * @return The number of bytes read from the descriptor's * stream, this value can be less than the amount * specified in the parameter @p size if there are * no more bytes to read. * * @notapi */ size_t mac_lld_read_receive_descriptor(MACReceiveDescriptor *rdp, uint8_t *buf, size_t size) { (void)rdp; (void)buf; return size; } #if MAC_USE_ZERO_COPY || defined(__DOXYGEN__) /** * @brief Returns a pointer to the next transmit buffer in the descriptor * chain. * @note The API guarantees that enough buffers can be requested to fill * a whole frame. * * @param[in] tdp pointer to a @p MACTransmitDescriptor structure * @param[in] size size of the requested buffer. Specify the frame size * on the first call then scale the value down subtracting * the amount of data already copied into the previous * buffers. * @param[out] sizep pointer to variable receiving the buffer size, it is * zero when the last buffer has already been returned. * Note that a returned size lower than the amount * requested means that more buffers must be requested * in order to fill the frame data entirely. * @return Pointer to the returned buffer. * @retval NULL if the buffer chain has been entirely scanned. * * @notapi */ uint8_t *mac_lld_get_next_transmit_buffer(MACTransmitDescriptor *tdp, size_t size, size_t *sizep) { (void)tdp; (void)size; (void)sizep; return NULL; } /** * @brief Returns a pointer to the next receive buffer in the descriptor * chain. * @note The API guarantees that the descriptor chain contains a whole * frame. * * @param[in] rdp pointer to a @p MACReceiveDescriptor structure * @param[out] sizep pointer to variable receiving the buffer size, it is * zero when the last buffer has already been returned. * @return Pointer to the returned buffer. * @retval NULL if the buffer chain has been entirely scanned. * * @notapi */ const uint8_t *mac_lld_get_next_receive_buffer(MACReceiveDescriptor *rdp, size_t *sizep) { (void)rdp; (void)sizep; return NULL; } #endif /* MAC_USE_ZERO_COPY */ #endif /* HAL_USE_MAC */ /** @} */