* Code cleanup (ARM mostly)

* Patch by Curt Brune, 17 May 2004:
  - Add support for Samsung S3C4510B CPU (ARM7tdmi based SoC)
  - Add support for ESPD-Inc. EVB4510 Board

1 files changed, 302 insertions, 0 deletions

diff --git a/drivers/s3c4510b_eth.h b/drivers/s3c4510b_eth.h
new file mode 100644
index 0000000..cbddba7
--- /dev/null
+++ b/drivers/s3c4510b_eth.h
@@ -0,0 +1,302 @@
+#ifndef __S3C4510B_ETH_H
+#define __S3C4510B_ETH_H
+/*
+ * Copyright (c) 2004	Cucy Systems (http://www.cucy.com)
+ * Curt Brune <curt@cucy.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * MODULE:        $Id:$
+ * Description:   Ethernet interface
+ * Runtime Env:   ARM7TDMI
+ * Change History:
+ *     03-02-04    Create (Curt Brune) curt@cucy.com
+ *
+ */
+
+#define __packed    __attribute__ ((packed))
+
+#define ETH_MAC_ADDR_SIZE           (6)    /*  dst,src addr is 6bytes each */
+#define ETH_MaxTxFrames             (16)   /*  Max number of Tx Frames */
+
+/*  Buffered DMA Receiver Control Register  */
+#define ETH_BRxBRST     0x0000F  /*  BDMA Rx Burst Size * BRxBRST  */
+				 /*  = Burst Data Size 16 */
+#define ETH_BRxSTSKO    0x00020  /*  BDMA Rx Stop/Skip  Frame or Interrupt(=1)  */
+				 /*  case of not OWNER the current Frame  */
+#define ETH_BRxMAINC    0x00040  /*  BDMA Rx Memory Address Inc/Dec  */
+#define ETH_BRxDIE      0x00080  /*  BDMA Rx Every Received Frame Interrupt Enable */
+#define ETH_BRxNLIE     0x00100  /*  BDMA Rx NULL List Interrupt Enable  */
+#define ETH_BRxNOIE     0x00200  /*  BDMA Rx Not Owner Interrupt Enable */
+#define ETH_BRxMSOIE    0x00400  /*  BDMA Rx Maximum Size over Interrupr Enable  */
+#define ETH_BRxLittle   0x00800  /*  BDMA Rx Big/Little Endian  */
+#define ETH_BRxBig      0x00000  /*  BDMA Rx Big/Little Endian */
+#define ETH_BRxWA01     0x01000  /*  BDMA Rx Word Alignment- one invalid byte  */
+#define ETH_BRxWA10     0x02000  /*  BDMA Rx Word Alignment- two invalid byte */
+#define ETH_BRxWA11     0x03000  /*  BDMA Rx Word Alignment- three invalid byte  */
+#define ETH_BRxEn       0x04000  /*  BDMA Rx Enable */
+#define ETH_BRxRS       0x08000  /*  BDMA Rx Reset */
+#define ETH_RxEmpty     0x10000  /*  BDMA Rx Buffer empty interrupt  */
+#define ETH_BRxEarly    0x20000  /*  BDMA Rx Early notify Interrupt */
+
+/*  Buffered DMA Trasmit Control Register(BDMATXCON)  */
+#define ETH_BTxBRST     0x0000F  /*  BDMA Tx Burst Size = 16  */
+#define ETH_BTxSTSKO    0x00020  /*  BDMA Tx Stop/Skip Frame or Interrupt in case */
+				 /*  of not Owner the current frame  */
+#define ETH_BTxCPIE     0x00080  /*  BDMA Tx Complete to send control  */
+				 /*  packet Enable */
+#define ETH_BTxNOIE     0x00200  /*  BDMA Tx Buffer Not Owner */
+#define ETH_BTxEmpty    0x00400  /*  BDMA Tx Buffer Empty Interrupt  */
+
+/*  BDMA Tx buffer can be moved to the MAC Tx IO when the new frame comes in.  */
+#define ETH_BTxMSL000   0x00000  /*  No wait to fill the BDMA  */
+#define ETH_BTxMSL001   0x00800  /*  wait to fill 1/8 of the BDMA  */
+#define ETH_BTxMSL010   0x01000  /*  wait to fill 2/8 of the BDMA */
+#define ETH_BTxMSL011   0x01800  /*  wait to fill 3/8 of the BDMA */
+#define ETH_BTxMSL100   0x02000  /*  wait to fill 4/8 of the BDMA */
+#define ETH_BTxMSL101   0x02800  /*  wait to fill 5/8 of the BDMA */
+#define ETH_BTxMSL110   0x03000  /*  wait to fill 6/8 of the BDMA */
+#define ETH_BTxMSL111   0x03800  /*  wait to fill 7/8 of the BDMA */
+#define ETH_BTxEn       0x04000  /*  BDMA Tx Enable  */
+#define ETH_BTxRS       0x08000  /*  BDMA Tx Reset  */
+
+/*  BDMA Status Register  */
+#define ETH_S_BRxRDF    0x00001  /*  BDMA Rx Done Every Received Frame  */
+#define ETH_S_BRxNL     0x00002  /*  BDMA Rx NULL List  */
+#define ETH_S_BRxNO     0x00004  /*  BDMA Rx Not Owner  */
+#define ETH_S_BRxMSO    0x00008  /*  BDMA Rx Maximum Size Over  */
+#define ETH_S_BRxEmpty  0x00010  /*  BDMA Rx Buffer Empty  */
+#define ETH_S_BRxSEarly 0x00020  /*  Early Notify  */
+#define ETH_S_BRxFRF    0x00080  /*  One more frame data in BDMA receive buffer  */
+#define ETH_S_BTxCCP    0x10000  /*  BDMA Tx Complete to send Control Packet  */
+#define ETH_S_BTxNL     0x20000  /*  BDMA Tx Null List  */
+#define ETH_S_BTxNO     0x40000  /*  BDMA Tx Not Owner */
+#define ETH_S_BTxEmpty  0x100000 /*  BDMA Tx Buffer Empty  */
+
+/*  MAC Control Register  */
+#define ETH_HaltReg     0x0001   /*  stop transmission and reception  */
+				 /*  after completion of any current packets  */
+#define ETH_HaltImm     0x0002   /*  Stop transmission and reception immediately  */
+#define ETH_SwReset     0x0004   /*  reset all Ethernet controller state machines */
+				 /*  and FIFOs  */
+#define ETH_FullDup     0x0008   /*  allow transmission to begin while reception */
+				 /*  is occurring  */
+#define ETH_MACLoop     0x0010   /*  MAC loopback */
+#define ETH_ConnM00     0x0000   /*  Automatic-default  */
+#define ETH_ConnM01     0x0020   /*  Force 10Mbits endec */
+#define ETH_ConnM10     0x0040   /*  Force MII (rate determined by MII clock  */
+#define ETH_MIIOFF      0x0040   /*  Force MII (rate determined by MII clock  */
+#define ETH_Loop10      0x0080   /*  Loop 10Mbps  */
+#define ETH_MissRoll    0x0400   /*  Missed error counter rolled over  */
+#define ETH_MDCOFF      0x1000   /*  MII Station Management Clock Off */
+#define ETH_EnMissRoll  0x2000   /*  Interrupt when missed error counter rolls  */
+				 /*  over  */
+#define ETH_Link10      0x8000   /*  Link status 10Mbps  */
+
+/*  CAM control register(CAMCON)  */
+#define ETH_StationAcc  0x0001   /*  Accept any packet with a unicast station  */
+				 /*  address  */
+#define ETH_GroupAcc    0x0002   /*  Accept any packet with multicast-group  */
+				 /*  station address   */
+#define ETH_BroadAcc    0x0004   /*  Accept any packet with a broadcast station */
+				 /*  address  */
+#define ETH_NegCAM      0x0008   /*  0: Accept packets CAM recognizes,  */
+				 /*     reject others */
+				 /*  1: reject packets CAM recognizes,  */
+				 /*     accept others  */
+#define ETH_CompEn      0x0010   /*  Compare Enable mode */
+
+/*  Transmit Control Register(MACTXCON) */
+#define ETH_TxEn        0x0001   /*  transmit Enable  */
+#define ETH_TxHalt      0x0002   /*  Transmit Halt Request  */
+#define ETH_NoPad       0x0004   /*  suppress Padding  */
+#define ETH_NoCRC       0x0008   /*  Suppress CRC  */
+#define ETH_FBack       0x0010   /*  Fast Back-off */
+#define ETH_NoDef       0x0020   /*  Disable the defer counter */
+#define ETH_SdPause     0x0040   /*  Send Pause */
+#define ETH_MII10En     0x0080   /*  MII 10Mbps mode enable */
+#define ETH_EnUnder     0x0100   /*  Enable Underrun */
+#define ETH_EnDefer     0x0200   /*  Enable Deferral */
+#define ETH_EnNCarr     0x0400   /*  Enable No Carrier  */
+#define ETH_EnExColl    0x0800   /*  interrupt if 16 collision occur  */
+				 /*  in the same packet  */
+#define ETH_EnLateColl  0x1000   /*  interrupt if collision occurs after  */
+				 /*  512 bit times(64 bytes times)  */
+#define ETH_EnTxPar     0x2000   /*  interrupt if the MAC transmit FIFO  */
+				 /*  has a parity error  */
+#define ETH_EnComp      0x4000   /*  interrupt when the MAC transmits or  */
+				 /*  discards one packet  */
+
+/*  Transmit Status Register(MACTXSTAT) */
+#define ETH_ExColl      0x0010   /*  Excessive collision  */
+#define ETH_TxDeffered  0x0020   /*  set if 16 collisions occur for same packet */
+#define ETH_Paused      0x0040   /*  packet waited because of pause during  */
+				 /*  transmission  */
+#define ETH_IntTx       0x0080   /*  set if transmission of packet causes an  */
+				 /*  interrupt condiftion  */
+#define ETH_Under       0x0100   /*  MAC transmit FIFO becomes empty during  */
+				 /*  transmission  */
+#define ETH_Defer       0x0200   /*  MAC defers for MAC deferral  */
+#define ETH_NCarr       0x0400   /*  No carrier sense detected during the  */
+				 /*  transmission of a packet  */
+#define ETH_SQE         0x0800   /*  Signal Quality Error */
+#define ETH_LateColl    0x1000   /*  a collision occures after 512 bit times  */
+#define ETH_TxPar       0x2000   /*  MAC transmit FIFO has detected a parity error */
+#define ETH_Comp        0x4000   /*  MAC transmit or discards one packet  */
+#define ETH_TxHalted    0x8000   /*  Transmission was halted by clearing  */
+				 /*  TxEn or Halt immedite  */
+
+/*  Receive Control Register (MACRXCON)  */
+#define ETH_RxEn        0x0001
+#define ETH_RxHalt      0x0002
+#define ETH_LongEn      0x0004
+#define ETH_ShortEn     0x0008
+#define ETH_StripCRC    0x0010
+#define ETH_PassCtl     0x0020
+#define ETH_IgnoreCRC   0x0040
+#define ETH_EnAlign     0x0100
+#define ETH_EnCRCErr    0x0200
+#define ETH_EnOver      0x0400
+#define ETH_EnLongErr   0x0800
+#define ETH_EnRxPar     0x2000
+#define ETH_EnGood      0x4000
+
+/*  Receive Status Register(MACRXSTAT) */
+#define ETH_MCtlRecd    0x0020
+#define ETH_MIntRx      0x0040
+#define ETH_MRx10Stat   0x0080
+#define ETH_MAllignErr  0x0100
+#define ETH_MCRCErr     0x0200
+#define ETH_MOverflow   0x0400
+#define ETH_MLongErr    0x0800
+#define ETH_MRxPar      0x2000
+#define ETH_MRxGood     0x4000
+#define ETH_MRxHalted   0x8000
+
+/*  type of ethernet packets */
+#define ETH_TYPE_ARP  (0x0806)
+#define ETH_TYPE_IP   (0x0800)
+
+#define ETH_HDR_SIZE  (14)
+
+/*  bit field for frame data pointer word */
+typedef struct __BF_FrameDataPtr {
+	u32 dataPtr:31;
+	u32   owner: 1;
+} BF_FrameDataPtr;
+
+typedef union _FrameDataPtr {
+	u32             ui;
+	BF_FrameDataPtr bf;
+} FrameDataPtr;
+
+typedef struct __BF_TX_Options {
+	u32    no_padding: 1;
+	u32        no_crc: 1;
+	u32  macTxIrqEnbl: 1;
+	u32  littleEndian: 1;
+	u32  frameDataDir: 1;
+	u32   widgetAlign: 2;
+	u32      reserved:25;
+} BF_TX_Options;
+
+typedef union _TX_Options {
+	u32    ui;
+	BF_TX_Options   bf;
+} TX_Options;
+
+typedef struct __BF_RX_Status {
+	u32           len:16;	/*  frame length */
+	u32     reserved1: 3;
+	u32       overMax: 1;
+	u32     reserved2: 1;
+	u32       ctrlRcv: 1;
+	u32         intRx: 1;
+	u32      rx10stat: 1;
+	u32      alignErr: 1;
+	u32        crcErr: 1;
+	u32      overFlow: 1;
+	u32       longErr: 1;
+	u32     reserved3: 1;
+	u32     parityErr: 1;
+	u32          good: 1;
+	u32        halted: 1;
+} BF_RX_Status;
+
+typedef union _RX_Status {
+	u32             ui;
+	BF_RX_Status    bf;
+} RX_Status;
+
+typedef struct __BF_TX_Status {
+	u32           len:16;	/*  frame length */
+	u32     txCollCnt: 4;
+	u32        exColl: 1;
+	u32       txDefer: 1;
+	u32        paused: 1;
+	u32         intTx: 1;
+	u32      underRun: 1;
+	u32         defer: 1;
+	u32     noCarrier: 1;
+	u32         SQErr: 1;
+	u32      lateColl: 1;
+	u32     parityErr: 1;
+	u32      complete: 1;
+	u32        halted: 1;
+} BF_TX_Status;
+
+typedef union _TX_Status {
+	u32    ui;
+	BF_TX_Status    bf;
+} TX_Status;
+
+/*  TX descriptor structure  */
+typedef struct __TX_FrameDescriptor {
+	volatile FrameDataPtr  m_frameDataPtr;
+	TX_Options                      m_opt;
+	volatile TX_Status           m_status;
+	struct __TX_FrameDescriptor *m_nextFD;
+} TX_FrameDescriptor;
+
+/*  RX descriptor structure  */
+typedef struct __RX_FrameDescriptor {
+	volatile FrameDataPtr  m_frameDataPtr;
+	u32                        m_reserved;
+	volatile RX_Status           m_status;
+	struct __RX_FrameDescriptor *m_nextFD;
+} RX_FrameDescriptor;
+
+/*  MAC Frame Structure */
+typedef struct __MACFrame {
+	u8     m_dstAddr[6] __packed;
+	u8     m_srcAddr[6] __packed;
+	u16  m_lengthOrType __packed;
+	u8  m_payload[1506] __packed;
+} MACFrame;
+
+/* Ethernet Control block */
+typedef struct __ETH {
+	TX_FrameDescriptor   *m_curTX_FD; /*  pointer to current TX frame descriptor */
+	TX_FrameDescriptor  *m_baseTX_FD; /*  pointer to base TX frame descriptor    */
+	RX_FrameDescriptor   *m_curRX_FD; /*  pointer to current RX frame descriptor */
+	RX_FrameDescriptor  *m_baseRX_FD; /*  pointer to base RX frame descriptor    */
+	u8                        *m_mac; /*  pointer to our MAC address             */
+} ETH;
+
+#endif