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302 lines
12 KiB
C
302 lines
12 KiB
C
#ifndef __S3C4510B_ETH_H
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#define __S3C4510B_ETH_H
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/*
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* Copyright (c) 2004 Cucy Systems (http://www.cucy.com)
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* Curt Brune <curt@cucy.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program 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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*
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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* MODULE: $Id:$
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* Description: Ethernet interface
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* Runtime Env: ARM7TDMI
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* Change History:
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* 03-02-04 Create (Curt Brune) curt@cucy.com
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*
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*/
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#define ETH_MAC_ADDR_SIZE (6) /* dst,src addr is 6bytes each */
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#define ETH_MaxTxFrames (16) /* Max number of Tx Frames */
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/* Buffered DMA Receiver Control Register */
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#define ETH_BRxBRST 0x0000F /* BDMA Rx Burst Size * BRxBRST */
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/* = Burst Data Size 16 */
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#define ETH_BRxSTSKO 0x00020 /* BDMA Rx Stop/Skip Frame or Interrupt(=1) */
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/* case of not OWNER the current Frame */
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#define ETH_BRxMAINC 0x00040 /* BDMA Rx Memory Address Inc/Dec */
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#define ETH_BRxDIE 0x00080 /* BDMA Rx Every Received Frame Interrupt Enable */
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#define ETH_BRxNLIE 0x00100 /* BDMA Rx NULL List Interrupt Enable */
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#define ETH_BRxNOIE 0x00200 /* BDMA Rx Not Owner Interrupt Enable */
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#define ETH_BRxMSOIE 0x00400 /* BDMA Rx Maximum Size over Interrupr Enable */
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#define ETH_BRxLittle 0x00800 /* BDMA Rx Big/Little Endian */
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#define ETH_BRxBig 0x00000 /* BDMA Rx Big/Little Endian */
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#define ETH_BRxWA01 0x01000 /* BDMA Rx Word Alignment- one invalid byte */
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#define ETH_BRxWA10 0x02000 /* BDMA Rx Word Alignment- two invalid byte */
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#define ETH_BRxWA11 0x03000 /* BDMA Rx Word Alignment- three invalid byte */
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#define ETH_BRxEn 0x04000 /* BDMA Rx Enable */
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#define ETH_BRxRS 0x08000 /* BDMA Rx Reset */
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#define ETH_RxEmpty 0x10000 /* BDMA Rx Buffer empty interrupt */
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#define ETH_BRxEarly 0x20000 /* BDMA Rx Early notify Interrupt */
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/* Buffered DMA Trasmit Control Register(BDMATXCON) */
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#define ETH_BTxBRST 0x0000F /* BDMA Tx Burst Size = 16 */
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#define ETH_BTxSTSKO 0x00020 /* BDMA Tx Stop/Skip Frame or Interrupt in case */
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/* of not Owner the current frame */
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#define ETH_BTxCPIE 0x00080 /* BDMA Tx Complete to send control */
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/* packet Enable */
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#define ETH_BTxNOIE 0x00200 /* BDMA Tx Buffer Not Owner */
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#define ETH_BTxEmpty 0x00400 /* BDMA Tx Buffer Empty Interrupt */
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/* BDMA Tx buffer can be moved to the MAC Tx IO when the new frame comes in. */
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#define ETH_BTxMSL000 0x00000 /* No wait to fill the BDMA */
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#define ETH_BTxMSL001 0x00800 /* wait to fill 1/8 of the BDMA */
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#define ETH_BTxMSL010 0x01000 /* wait to fill 2/8 of the BDMA */
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#define ETH_BTxMSL011 0x01800 /* wait to fill 3/8 of the BDMA */
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#define ETH_BTxMSL100 0x02000 /* wait to fill 4/8 of the BDMA */
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#define ETH_BTxMSL101 0x02800 /* wait to fill 5/8 of the BDMA */
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#define ETH_BTxMSL110 0x03000 /* wait to fill 6/8 of the BDMA */
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#define ETH_BTxMSL111 0x03800 /* wait to fill 7/8 of the BDMA */
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#define ETH_BTxEn 0x04000 /* BDMA Tx Enable */
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#define ETH_BTxRS 0x08000 /* BDMA Tx Reset */
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/* BDMA Status Register */
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#define ETH_S_BRxRDF 0x00001 /* BDMA Rx Done Every Received Frame */
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#define ETH_S_BRxNL 0x00002 /* BDMA Rx NULL List */
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#define ETH_S_BRxNO 0x00004 /* BDMA Rx Not Owner */
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#define ETH_S_BRxMSO 0x00008 /* BDMA Rx Maximum Size Over */
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#define ETH_S_BRxEmpty 0x00010 /* BDMA Rx Buffer Empty */
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#define ETH_S_BRxSEarly 0x00020 /* Early Notify */
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#define ETH_S_BRxFRF 0x00080 /* One more frame data in BDMA receive buffer */
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#define ETH_S_BTxCCP 0x10000 /* BDMA Tx Complete to send Control Packet */
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#define ETH_S_BTxNL 0x20000 /* BDMA Tx Null List */
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#define ETH_S_BTxNO 0x40000 /* BDMA Tx Not Owner */
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#define ETH_S_BTxEmpty 0x100000 /* BDMA Tx Buffer Empty */
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/* MAC Control Register */
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#define ETH_HaltReg 0x0001 /* stop transmission and reception */
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/* after completion of any current packets */
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#define ETH_HaltImm 0x0002 /* Stop transmission and reception immediately */
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#define ETH_SwReset 0x0004 /* reset all Ethernet controller state machines */
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/* and FIFOs */
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#define ETH_FullDup 0x0008 /* allow transmission to begin while reception */
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/* is occurring */
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#define ETH_MACLoop 0x0010 /* MAC loopback */
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#define ETH_ConnM00 0x0000 /* Automatic-default */
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#define ETH_ConnM01 0x0020 /* Force 10Mbits endec */
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#define ETH_ConnM10 0x0040 /* Force MII (rate determined by MII clock */
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#define ETH_MIIOFF 0x0040 /* Force MII (rate determined by MII clock */
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#define ETH_Loop10 0x0080 /* Loop 10Mbps */
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#define ETH_MissRoll 0x0400 /* Missed error counter rolled over */
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#define ETH_MDCOFF 0x1000 /* MII Station Management Clock Off */
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#define ETH_EnMissRoll 0x2000 /* Interrupt when missed error counter rolls */
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/* over */
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#define ETH_Link10 0x8000 /* Link status 10Mbps */
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/* CAM control register(CAMCON) */
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#define ETH_StationAcc 0x0001 /* Accept any packet with a unicast station */
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/* address */
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#define ETH_GroupAcc 0x0002 /* Accept any packet with multicast-group */
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/* station address */
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#define ETH_BroadAcc 0x0004 /* Accept any packet with a broadcast station */
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/* address */
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#define ETH_NegCAM 0x0008 /* 0: Accept packets CAM recognizes, */
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/* reject others */
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/* 1: reject packets CAM recognizes, */
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/* accept others */
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#define ETH_CompEn 0x0010 /* Compare Enable mode */
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/* Transmit Control Register(MACTXCON) */
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#define ETH_TxEn 0x0001 /* transmit Enable */
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#define ETH_TxHalt 0x0002 /* Transmit Halt Request */
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#define ETH_NoPad 0x0004 /* suppress Padding */
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#define ETH_NoCRC 0x0008 /* Suppress CRC */
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#define ETH_FBack 0x0010 /* Fast Back-off */
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#define ETH_NoDef 0x0020 /* Disable the defer counter */
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#define ETH_SdPause 0x0040 /* Send Pause */
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#define ETH_MII10En 0x0080 /* MII 10Mbps mode enable */
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#define ETH_EnUnder 0x0100 /* Enable Underrun */
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#define ETH_EnDefer 0x0200 /* Enable Deferral */
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#define ETH_EnNCarr 0x0400 /* Enable No Carrier */
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#define ETH_EnExColl 0x0800 /* interrupt if 16 collision occur */
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/* in the same packet */
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#define ETH_EnLateColl 0x1000 /* interrupt if collision occurs after */
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/* 512 bit times(64 bytes times) */
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#define ETH_EnTxPar 0x2000 /* interrupt if the MAC transmit FIFO */
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/* has a parity error */
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#define ETH_EnComp 0x4000 /* interrupt when the MAC transmits or */
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/* discards one packet */
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/* Transmit Status Register(MACTXSTAT) */
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#define ETH_ExColl 0x0010 /* Excessive collision */
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#define ETH_TxDeffered 0x0020 /* set if 16 collisions occur for same packet */
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#define ETH_Paused 0x0040 /* packet waited because of pause during */
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/* transmission */
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#define ETH_IntTx 0x0080 /* set if transmission of packet causes an */
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/* interrupt condiftion */
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#define ETH_Under 0x0100 /* MAC transmit FIFO becomes empty during */
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/* transmission */
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#define ETH_Defer 0x0200 /* MAC defers for MAC deferral */
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#define ETH_NCarr 0x0400 /* No carrier sense detected during the */
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/* transmission of a packet */
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#define ETH_SQE 0x0800 /* Signal Quality Error */
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#define ETH_LateColl 0x1000 /* a collision occures after 512 bit times */
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#define ETH_TxPar 0x2000 /* MAC transmit FIFO has detected a parity error */
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#define ETH_Comp 0x4000 /* MAC transmit or discards one packet */
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#define ETH_TxHalted 0x8000 /* Transmission was halted by clearing */
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/* TxEn or Halt immedite */
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/* Receive Control Register (MACRXCON) */
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#define ETH_RxEn 0x0001
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#define ETH_RxHalt 0x0002
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#define ETH_LongEn 0x0004
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#define ETH_ShortEn 0x0008
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#define ETH_StripCRC 0x0010
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#define ETH_PassCtl 0x0020
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#define ETH_IgnoreCRC 0x0040
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#define ETH_EnAlign 0x0100
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#define ETH_EnCRCErr 0x0200
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#define ETH_EnOver 0x0400
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#define ETH_EnLongErr 0x0800
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#define ETH_EnRxPar 0x2000
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#define ETH_EnGood 0x4000
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/* Receive Status Register(MACRXSTAT) */
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#define ETH_MCtlRecd 0x0020
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#define ETH_MIntRx 0x0040
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#define ETH_MRx10Stat 0x0080
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#define ETH_MAllignErr 0x0100
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#define ETH_MCRCErr 0x0200
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#define ETH_MOverflow 0x0400
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#define ETH_MLongErr 0x0800
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#define ETH_MRxPar 0x2000
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#define ETH_MRxGood 0x4000
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#define ETH_MRxHalted 0x8000
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/* type of ethernet packets */
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#define ETH_TYPE_ARP (0x0806)
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#define ETH_TYPE_IP (0x0800)
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#define ETH_HDR_SIZE (14)
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/* bit field for frame data pointer word */
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typedef struct __BF_FrameDataPtr {
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u32 dataPtr:31;
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u32 owner: 1;
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} BF_FrameDataPtr;
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typedef union _FrameDataPtr {
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u32 ui;
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BF_FrameDataPtr bf;
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} FrameDataPtr;
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typedef struct __BF_TX_Options {
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u32 no_padding: 1;
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u32 no_crc: 1;
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u32 macTxIrqEnbl: 1;
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u32 littleEndian: 1;
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u32 frameDataDir: 1;
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u32 widgetAlign: 2;
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u32 reserved:25;
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} BF_TX_Options;
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typedef union _TX_Options {
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u32 ui;
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BF_TX_Options bf;
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} TX_Options;
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typedef struct __BF_RX_Status {
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u32 len:16; /* frame length */
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u32 reserved1: 3;
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u32 overMax: 1;
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u32 reserved2: 1;
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u32 ctrlRcv: 1;
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u32 intRx: 1;
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u32 rx10stat: 1;
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u32 alignErr: 1;
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u32 crcErr: 1;
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u32 overFlow: 1;
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u32 longErr: 1;
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u32 reserved3: 1;
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u32 parityErr: 1;
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u32 good: 1;
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u32 halted: 1;
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} BF_RX_Status;
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typedef union _RX_Status {
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u32 ui;
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BF_RX_Status bf;
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} RX_Status;
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typedef struct __BF_TX_Status {
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u32 len:16; /* frame length */
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u32 txCollCnt: 4;
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u32 exColl: 1;
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u32 txDefer: 1;
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u32 paused: 1;
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u32 intTx: 1;
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u32 underRun: 1;
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u32 defer: 1;
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u32 noCarrier: 1;
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u32 SQErr: 1;
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u32 lateColl: 1;
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u32 parityErr: 1;
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u32 complete: 1;
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u32 halted: 1;
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} BF_TX_Status;
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typedef union _TX_Status {
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u32 ui;
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BF_TX_Status bf;
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} TX_Status;
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/* TX descriptor structure */
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typedef struct __TX_FrameDescriptor {
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volatile FrameDataPtr m_frameDataPtr;
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TX_Options m_opt;
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volatile TX_Status m_status;
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struct __TX_FrameDescriptor *m_nextFD;
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} TX_FrameDescriptor;
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/* RX descriptor structure */
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typedef struct __RX_FrameDescriptor {
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volatile FrameDataPtr m_frameDataPtr;
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u32 m_reserved;
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volatile RX_Status m_status;
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struct __RX_FrameDescriptor *m_nextFD;
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} RX_FrameDescriptor;
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/* MAC Frame Structure */
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struct __MACFrame {
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u8 m_dstAddr[6];
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u8 m_srcAddr[6];
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u16 m_lengthOrType;
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u8 m_payload[1506];
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} __attribute__ ((packed));
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typedef struct __MACFrame MACFrame;
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/* Ethernet Control block */
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typedef struct __ETH {
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TX_FrameDescriptor *m_curTX_FD; /* pointer to current TX frame descriptor */
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TX_FrameDescriptor *m_baseTX_FD; /* pointer to base TX frame descriptor */
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RX_FrameDescriptor *m_curRX_FD; /* pointer to current RX frame descriptor */
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RX_FrameDescriptor *m_baseRX_FD; /* pointer to base RX frame descriptor */
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u8 *m_mac; /* pointer to our MAC address */
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} ETH;
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#endif
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