git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1185 35acf78f-673a-0410-8e92-d51de3d6d3f4
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gdisirio
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/*
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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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* @note This function should be invoked after the @p macInit() and before
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* @p macStart() else the result is unspecified (performed or ignored).
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*/
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void mac_lld_set_address(MACDriver *macp, uint8_t *p) {
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}
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/**
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* @brief Starts the I/O activity and enters a low power mode.
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*
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* @param[in] macp pointer to the @p MACDriver object
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*/
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void mac_lld_start(MACDriver *macp) {
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}
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/**
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* @brief Stops the I/O activity.
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*
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* @param[in] macp pointer to the @p MACDriver object
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*/
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void mac_lld_stop(MACDriver *macp) {
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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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* @return A pointer to a @p MACTransmitDescriptor structure or @p NULL if
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* a descriptor is not available or the driver went in stop mode.
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*/
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MACTransmitDescriptor *max_lld_get_transmit_descriptor(MACDriver *macp) {
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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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* @return A pointer to a @p MACReceiveDescriptor structure or @p NULL if
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* the operation timed out, the driver went in stop mode or some
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* transient error happened.
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*/
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MACReceiveDescriptor *max_lld_get_receive_descriptor(MACDriver *macp) {
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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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@ -0,0 +1,141 @@
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/*
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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.h
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* @brief MAC Driver subsystem low level driver header template
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* @addtogroup MAC_LLD
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* @{
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*/
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#ifndef _MAC_LLD_H_
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#define _MAC_LLD_H_
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @brief Number of available descriptors/buffers.
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*/
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#if !defined(MAC_TRANSMIT_DESCRIPTORS) || defined(__DOXYGEN__)
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#define MAC_TRANSMIT_DESCRIPTORS 2
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#endif
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/*===========================================================================*/
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/* EMAC specific constants and settings. */
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/*===========================================================================*/
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#define EMAC_RECEIVE_BUFFERS 24
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#define EMAC_RECEIVE_BUFFERS_SIZE 128 /* Do not modify */
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#define EMAC_TRANSMIT_BUFFERS MAC_TRANSMIT_DESCRIPTORS
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#define EMAC_TRANSMIT_BUFFERS_SIZE 1518
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#define W1_R_OWNERSHIP 0x00000001
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#define W1_R_WRAP 0x00000002
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#define W1_R_ADDRESS_MASK 0xFFFFFFFC
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#define W2_R_LENGTH_MASK 0x00000FFF
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#define W2_R_FRAME_START 0x00004000
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#define W2_R_FRAME_END 0x00008000
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#define W2_R_CFI 0x00010000
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#define W2_R_VLAN_PRIO_MASK 0x000E0000
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#define W2_R_PRIO_TAG_DETECTED 0x00100000
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#define W2_R_VLAN_TAG_DETECTED 0x00200000
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#define W2_R_TYPE_ID_MATCH 0x00400000
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#define W2_R_ADDR4_MATCH 0x00800000
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#define W2_R_ADDR3_MATCH 0x01000000
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#define W2_R_ADDR2_MATCH 0x02000000
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#define W2_R_ADDR1_MATCH 0x04000000
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#define W2_R_RFU1 0x08000000
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#define W2_R_ADDR_EXT_MATCH 0x10000000
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#define W2_R_UNICAST_MATCH 0x20000000
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#define W2_R_MULTICAST_MATCH 0x40000000
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#define W2_R_BROADCAST_DETECTED 0x80000000
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#define W2_T_LENGTH_MASK 0x000007FF
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#define W2_T_LOCKED 0x00000800 /* Not an EMAC flag, used by the driver */
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#define W2_T_RFU1 0x00003000
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#define W2_T_LAST_BUFFER 0x00008000
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#define W2_T_NO_CRC 0x00010000
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#define W2_T_RFU2 0x07FE0000
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#define W2_T_BUFFERS_EXHAUSTED 0x08000000
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#define W2_T_TRANSMIT_UNDERRUN 0x10000000
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#define W2_T_RETRY_LIMIT_EXC 0x20000000
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#define W2_T_WRAP 0x40000000
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#define W2_T_USED 0x80000000
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Structure representing a MAC driver.
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*/
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typedef struct {
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enum {ifStopped = 0,
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ifStarted} md_state; /**< @brief Interface status.*/
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Semaphore md_tdsem; /**< Transmit semaphore.*/
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Semaphore md_rdsem; /**< Receive semaphore.*/
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} MACDriver;
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/**
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* @brief Structure representing a transmission descriptor.
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*/
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typedef struct {
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uint32_t w1;
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uint32_t w2;
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} MACTransmitDescriptor;
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/**
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* @brief Structure representing a receive descriptor.
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*/
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typedef struct {
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uint32_t w1;
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uint32_t w2;
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} MACReceiveDescriptor;
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void mac_lld_init(void);
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void mac_lld_set_address(MACDriver *macp, uint8_t *p);
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void mac_lld_start(MACDriver *macp);
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void mac_lld_stop(MACDriver *macp);
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MACTransmitDescriptor *max_lld_get_transmit_descriptor(MACDriver *macp);
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void mac_lld_release_transmit_descriptor(MACDriver *macp,
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MACTransmitDescriptor *tdp);
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uint8_t *mac_lld_get_transmit_buffer(MACTransmitDescriptor *tdp);
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MACReceiveDescriptor *max_lld_get_receive_descriptor(MACDriver *macp);
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void mac_lld_release_receive_descriptor(MACDriver *macp,
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MACReceiveDescriptor *rdp);
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uint8_t *mac_lld_get_receive_buffer(MACReceiveDescriptor *rdp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _MAC_LLD_H_ */
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/** @} */
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