drivers/net/gt96100eth.h - maze/linux - Git at Google

 /*
  * Copyright 2000 MontaVista Software Inc.
  * Author: MontaVista Software, Inc.
  *         	stevel@mvista.com or source@mvista.com
  *
  * ########################################################################
  *
  *  This program is free software; you can distribute it and/or modify it
  *  under the terms of the GNU General Public License (Version 2) as
  *  published by the Free Software Foundation.
  *
  *  This program is distributed in the hope 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.
  *
  * ########################################################################
  *
  * Ethernet driver definitions for the MIPS GT96100 Advanced
  * Communication Controller.
  *
  */
 #ifndef _GT96100ETH_H
 #define _GT96100ETH_H

 #include <asm/galileo-boards/gt96100.h>

 #define dbg(lvl, format, arg...) \
     if (lvl <= GT96100_DEBUG) \
         printk(KERN_DEBUG "%s: " format, dev->name , ## arg)
 #define err(format, arg...) \
     printk(KERN_ERR "%s: " format, dev->name , ## arg)
 #define info(format, arg...) \
     printk(KERN_INFO "%s: " format, dev->name , ## arg)
 #define warn(format, arg...) \
     printk(KERN_WARNING "%s: " format, dev->name , ## arg)

 /* Keep the ring sizes a power of two for efficiency. */
 #define TX_RING_SIZE	16
 #define RX_RING_SIZE	32
 #define PKT_BUF_SZ	1536	/* Size of each temporary Rx buffer.*/

 #define RX_HASH_TABLE_SIZE 16384
 #define HASH_HOP_NUMBER 12

 #define NUM_INTERFACES 2

 #define GT96100ETH_TX_TIMEOUT HZ/4

 #define GT96100_ETH0_BASE (MIPS_GT96100_BASE + GT96100_ETH_PORT_CONFIG)
 #define GT96100_ETH1_BASE (GT96100_ETH0_BASE + GT96100_ETH_IO_SIZE)

 #ifdef CONFIG_MIPS_EV96100
 #define GT96100_ETHER0_IRQ 3
 #define GT96100_ETHER1_IRQ 4
 #else
 #define GT96100_ETHER0_IRQ -1
 #define GT96100_ETHER1_IRQ -1
 #endif

 #define REV_GT96100  1
 #define REV_GT96100A_1 2
 #define REV_GT96100A 3

 #define GT96100ETH_READ(gp, offset) \
     GT96100_READ((gp->port_offset + offset))

 #define GT96100ETH_WRITE(gp, offset, data) \
     GT96100_WRITE((gp->port_offset + offset), data)

 #define GT96100ETH_SETBIT(gp, offset, bits) {\
     u32 val = GT96100ETH_READ(gp, offset); val |= (u32)(bits); \
     GT96100ETH_WRITE(gp, offset, val); }

 #define GT96100ETH_CLRBIT(gp, offset, bits) {\
     u32 val = GT96100ETH_READ(gp, offset); val &= (u32)(~(bits)); \
     GT96100ETH_WRITE(gp, offset, val); }


 /* Bit definitions of the SMI Reg */
 enum {
 	smirDataMask = 0xffff,
 	smirPhyAdMask = 0x1f<<16,
 	smirPhyAdBit = 16,
 	smirRegAdMask = 0x1f<<21,
 	smirRegAdBit = 21,
 	smirOpCode = 1<<26,
 	smirReadValid = 1<<27,
 	smirBusy = 1<<28
 };

 /* Bit definitions of the Port Config Reg */
 enum pcr_bits {
 	pcrPM = 1,
 	pcrRBM = 2,
 	pcrPBF = 4,
 	pcrEN = 1<<7,
 	pcrLPBKMask = 0x3<<8,
 	pcrLPBKBit = 8,
 	pcrFC = 1<<10,
 	pcrHS = 1<<12,
 	pcrHM = 1<<13,
 	pcrHDM = 1<<14,
 	pcrHD = 1<<15,
 	pcrISLMask = 0x7<<28,
 	pcrISLBit = 28,
 	pcrACCS = 1<<31
 };

 /* Bit definitions of the Port Config Extend Reg */
 enum pcxr_bits {
 	pcxrIGMP = 1,
 	pcxrSPAN = 2,
 	pcxrPAR = 4,
 	pcxrPRIOtxMask = 0x7<<3,
 	pcxrPRIOtxBit = 3,
 	pcxrPRIOrxMask = 0x3<<6,
 	pcxrPRIOrxBit = 6,
 	pcxrPRIOrxOverride = 1<<8,
 	pcxrDPLXen = 1<<9,
 	pcxrFCTLen = 1<<10,
 	pcxrFLP = 1<<11,
 	pcxrFCTL = 1<<12,
 	pcxrMFLMask = 0x3<<14,
 	pcxrMFLBit = 14,
 	pcxrMIBclrMode = 1<<16,
 	pcxrSpeed = 1<<18,
 	pcxrSpeeden = 1<<19,
 	pcxrRMIIen = 1<<20,
 	pcxrDSCPen = 1<<21
 };

 /* Bit definitions of the Port Command Reg */
 enum pcmr_bits {
 	pcmrFJ = 1<<15
 };


 /* Bit definitions of the Port Status Reg */
 enum psr_bits {
 	psrSpeed = 1,
 	psrDuplex = 2,
 	psrFctl = 4,
 	psrLink = 8,
 	psrPause = 1<<4,
 	psrTxLow = 1<<5,
 	psrTxHigh = 1<<6,
 	psrTxInProg = 1<<7
 };

 /* Bit definitions of the SDMA Config Reg */
 enum sdcr_bits {
 	sdcrRCMask = 0xf<<2,
 	sdcrRCBit = 2,
 	sdcrBLMR = 1<<6,
 	sdcrBLMT = 1<<7,
 	sdcrPOVR = 1<<8,
 	sdcrRIFB = 1<<9,
 	sdcrBSZMask = 0x3<<12,
 	sdcrBSZBit = 12
 };

 /* Bit definitions of the SDMA Command Reg */
 enum sdcmr_bits {
 	sdcmrERD = 1<<7,
 	sdcmrAR = 1<<15,
 	sdcmrSTDH = 1<<16,
 	sdcmrSTDL = 1<<17,
 	sdcmrTXDH = 1<<23,
 	sdcmrTXDL = 1<<24,
 	sdcmrAT = 1<<31
 };

 /* Bit definitions of the Interrupt Cause Reg */
 enum icr_bits {
 	icrRxBuffer = 1,
 	icrTxBufferHigh = 1<<2,
 	icrTxBufferLow = 1<<3,
 	icrTxEndHigh = 1<<6,
 	icrTxEndLow = 1<<7,
 	icrRxError = 1<<8,
 	icrTxErrorHigh = 1<<10,
 	icrTxErrorLow = 1<<11,
 	icrRxOVR = 1<<12,
 	icrTxUdr = 1<<13,
 	icrRxBufferQ0 = 1<<16,
 	icrRxBufferQ1 = 1<<17,
 	icrRxBufferQ2 = 1<<18,
 	icrRxBufferQ3 = 1<<19,
 	icrRxErrorQ0 = 1<<20,
 	icrRxErrorQ1 = 1<<21,
 	icrRxErrorQ2 = 1<<22,
 	icrRxErrorQ3 = 1<<23,
 	icrMIIPhySTC = 1<<28,
 	icrSMIdone = 1<<29,
 	icrEtherIntSum = 1<<31
 };


 /* The Rx and Tx descriptor lists. */
 typedef struct {
 #ifdef DESC_BE
 	u16 byte_cnt;
 	u16 reserved;
 #else
 	u16 reserved;
 	u16 byte_cnt;
 #endif
 	u32 cmdstat;
 	u32 next;
 	u32 buff_ptr;
 } __attribute__ ((packed)) gt96100_td_t;

 typedef struct {
 #ifdef DESC_BE
 	u16 buff_sz;
 	u16 byte_cnt;
 #else
 	u16 byte_cnt;
 	u16 buff_sz;
 #endif
 	u32 cmdstat;
 	u32 next;
 	u32 buff_ptr;
 } __attribute__ ((packed)) gt96100_rd_t;


 /* Values for the Tx command-status descriptor entry. */
 enum td_cmdstat {
 	txOwn = 1<<31,
 	txAutoMode = 1<<30,
 	txEI = 1<<23,
 	txGenCRC = 1<<22,
 	txPad = 1<<18,
 	txFirst = 1<<17,
 	txLast = 1<<16,
 	txErrorSummary = 1<<15,
 	txReTxCntMask = 0x0f<<10,
 	txReTxCntBit = 10,
 	txCollision = 1<<9,
 	txReTxLimit = 1<<8,
 	txUnderrun = 1<<6,
 	txLateCollision = 1<<5
 };


 /* Values for the Rx command-status descriptor entry. */
 enum rd_cmdstat {
 	rxOwn = 1<<31,
 	rxAutoMode = 1<<30,
 	rxEI = 1<<23,
 	rxFirst = 1<<17,
 	rxLast = 1<<16,
 	rxErrorSummary = 1<<15,
 	rxIGMP = 1<<14,
 	rxHashExpired = 1<<13,
 	rxMissedFrame = 1<<12,
 	rxFrameType = 1<<11,
 	rxShortFrame = 1<<8,
 	rxMaxFrameLen = 1<<7,
 	rxOverrun = 1<<6,
 	rxCollision = 1<<4,
 	rxCRCError = 1
 };

 /* Bit fields of a Hash Table Entry */
 enum hash_table_entry {
 	hteValid = 1,
 	hteSkip = 2,
 	hteRD = 4
 };

 // The MIB counters
 typedef struct {
 	u32 byteReceived;
 	u32 byteSent;
 	u32 framesReceived;
 	u32 framesSent;
 	u32 totalByteReceived;
 	u32 totalFramesReceived;
 	u32 broadcastFramesReceived;
 	u32 multicastFramesReceived;
 	u32 cRCError;
 	u32 oversizeFrames;
 	u32 fragments;
 	u32 jabber;
 	u32 collision;
 	u32 lateCollision;
 	u32 frames64;
 	u32 frames65_127;
 	u32 frames128_255;
 	u32 frames256_511;
 	u32 frames512_1023;
 	u32 frames1024_MaxSize;
 	u32 macRxError;
 	u32 droppedFrames;
 	u32 outMulticastFrames;
 	u32 outBroadcastFrames;
 	u32 undersizeFrames;
 } mib_counters_t;


 struct gt96100_private {
 	gt96100_rd_t* rx_ring;
 	gt96100_td_t* tx_ring;
 	// The Rx and Tx rings must be 16-byte aligned
 	dma_addr_t rx_ring_dma;
 	dma_addr_t tx_ring_dma;
 	char* hash_table;
 	// The Hash Table must be 8-byte aligned
 	dma_addr_t hash_table_dma;
 	int hash_mode;

 	// The Rx buffers must be 8-byte aligned
 	char* rx_buff;
 	dma_addr_t rx_buff_dma;
 	// Tx buffers (tx_skbuff[i]->data) with less than 8 bytes
 	// of payload must be 8-byte aligned
 	struct sk_buff* tx_skbuff[TX_RING_SIZE];
 	int rx_next_out; /* The next free ring entry to receive */
 	int tx_next_in;	 /* The next free ring entry to send */
 	int tx_next_out; /* The last ring entry the ISR processed */
 	int tx_count;    /* current # of pkts waiting to be sent in Tx ring */
 	int intr_work_done; /* number of Rx and Tx pkts processed in the isr */
 	int tx_full;        /* Tx ring is full */

 	mib_counters_t mib;
 	struct net_device_stats stats;

 	int port_num;  // 0 or 1
 	int chip_rev;
 	u32 port_offset;

 	int phy_addr; // PHY address
 	u32 last_psr; // last value of the port status register

 	int options;     /* User-settable misc. driver options. */
 	struct timer_list timer;
 	spinlock_t lock; /* Serialise access to device */
 };

 #endif
	/*
	* Copyright 2000 MontaVista Software Inc.
	* Author: MontaVista Software, Inc.
	* stevel@mvista.com or source@mvista.com
	*
	* ########################################################################
	*
	* This program is free software; you can distribute it and/or modify it
	* under the terms of the GNU General Public License (Version 2) as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope 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.
	*
	* ########################################################################
	*
	* Ethernet driver definitions for the MIPS GT96100 Advanced
	* Communication Controller.
	*
	*/
	#ifndef _GT96100ETH_H
	#define _GT96100ETH_H

	#include <asm/galileo-boards/gt96100.h>

	#define dbg(lvl, format, arg...) \
	if (lvl <= GT96100_DEBUG) \
	printk(KERN_DEBUG "%s: " format, dev->name , ## arg)
	#define err(format, arg...) \
	printk(KERN_ERR "%s: " format, dev->name , ## arg)
	#define info(format, arg...) \
	printk(KERN_INFO "%s: " format, dev->name , ## arg)
	#define warn(format, arg...) \
	printk(KERN_WARNING "%s: " format, dev->name , ## arg)

	/* Keep the ring sizes a power of two for efficiency. */
	#define TX_RING_SIZE 16
	#define RX_RING_SIZE 32
	#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/

	#define RX_HASH_TABLE_SIZE 16384
	#define HASH_HOP_NUMBER 12

	#define NUM_INTERFACES 2

	#define GT96100ETH_TX_TIMEOUT HZ/4

	#define GT96100_ETH0_BASE (MIPS_GT96100_BASE + GT96100_ETH_PORT_CONFIG)
	#define GT96100_ETH1_BASE (GT96100_ETH0_BASE + GT96100_ETH_IO_SIZE)

	#ifdef CONFIG_MIPS_EV96100
	#define GT96100_ETHER0_IRQ 3
	#define GT96100_ETHER1_IRQ 4
	#else
	#define GT96100_ETHER0_IRQ -1
	#define GT96100_ETHER1_IRQ -1
	#endif

	#define REV_GT96100 1
	#define REV_GT96100A_1 2
	#define REV_GT96100A 3

	#define GT96100ETH_READ(gp, offset) \
	GT96100_READ((gp->port_offset + offset))

	#define GT96100ETH_WRITE(gp, offset, data) \
	GT96100_WRITE((gp->port_offset + offset), data)

	#define GT96100ETH_SETBIT(gp, offset, bits) {\
	u32 val = GT96100ETH_READ(gp, offset); val \|= (u32)(bits); \
	GT96100ETH_WRITE(gp, offset, val); }

	#define GT96100ETH_CLRBIT(gp, offset, bits) {\
	u32 val = GT96100ETH_READ(gp, offset); val &= (u32)(~(bits)); \
	GT96100ETH_WRITE(gp, offset, val); }


	/* Bit definitions of the SMI Reg */
	enum {
	smirDataMask = 0xffff,
	smirPhyAdMask = 0x1f<<16,
	smirPhyAdBit = 16,
	smirRegAdMask = 0x1f<<21,
	smirRegAdBit = 21,
	smirOpCode = 1<<26,
	smirReadValid = 1<<27,
	smirBusy = 1<<28
	};

	/* Bit definitions of the Port Config Reg */
	enum pcr_bits {
	pcrPM = 1,
	pcrRBM = 2,
	pcrPBF = 4,
	pcrEN = 1<<7,
	pcrLPBKMask = 0x3<<8,
	pcrLPBKBit = 8,
	pcrFC = 1<<10,
	pcrHS = 1<<12,
	pcrHM = 1<<13,
	pcrHDM = 1<<14,
	pcrHD = 1<<15,
	pcrISLMask = 0x7<<28,
	pcrISLBit = 28,
	pcrACCS = 1<<31
	};

	/* Bit definitions of the Port Config Extend Reg */
	enum pcxr_bits {
	pcxrIGMP = 1,
	pcxrSPAN = 2,
	pcxrPAR = 4,
	pcxrPRIOtxMask = 0x7<<3,
	pcxrPRIOtxBit = 3,
	pcxrPRIOrxMask = 0x3<<6,
	pcxrPRIOrxBit = 6,
	pcxrPRIOrxOverride = 1<<8,
	pcxrDPLXen = 1<<9,
	pcxrFCTLen = 1<<10,
	pcxrFLP = 1<<11,
	pcxrFCTL = 1<<12,
	pcxrMFLMask = 0x3<<14,
	pcxrMFLBit = 14,
	pcxrMIBclrMode = 1<<16,
	pcxrSpeed = 1<<18,
	pcxrSpeeden = 1<<19,
	pcxrRMIIen = 1<<20,
	pcxrDSCPen = 1<<21
	};

	/* Bit definitions of the Port Command Reg */
	enum pcmr_bits {
	pcmrFJ = 1<<15
	};


	/* Bit definitions of the Port Status Reg */
	enum psr_bits {
	psrSpeed = 1,
	psrDuplex = 2,
	psrFctl = 4,
	psrLink = 8,
	psrPause = 1<<4,
	psrTxLow = 1<<5,
	psrTxHigh = 1<<6,
	psrTxInProg = 1<<7
	};

	/* Bit definitions of the SDMA Config Reg */
	enum sdcr_bits {
	sdcrRCMask = 0xf<<2,
	sdcrRCBit = 2,
	sdcrBLMR = 1<<6,
	sdcrBLMT = 1<<7,
	sdcrPOVR = 1<<8,
	sdcrRIFB = 1<<9,
	sdcrBSZMask = 0x3<<12,
	sdcrBSZBit = 12
	};

	/* Bit definitions of the SDMA Command Reg */
	enum sdcmr_bits {
	sdcmrERD = 1<<7,
	sdcmrAR = 1<<15,
	sdcmrSTDH = 1<<16,
	sdcmrSTDL = 1<<17,
	sdcmrTXDH = 1<<23,
	sdcmrTXDL = 1<<24,
	sdcmrAT = 1<<31
	};

	/* Bit definitions of the Interrupt Cause Reg */
	enum icr_bits {
	icrRxBuffer = 1,
	icrTxBufferHigh = 1<<2,
	icrTxBufferLow = 1<<3,
	icrTxEndHigh = 1<<6,
	icrTxEndLow = 1<<7,
	icrRxError = 1<<8,
	icrTxErrorHigh = 1<<10,
	icrTxErrorLow = 1<<11,
	icrRxOVR = 1<<12,
	icrTxUdr = 1<<13,
	icrRxBufferQ0 = 1<<16,
	icrRxBufferQ1 = 1<<17,
	icrRxBufferQ2 = 1<<18,
	icrRxBufferQ3 = 1<<19,
	icrRxErrorQ0 = 1<<20,
	icrRxErrorQ1 = 1<<21,
	icrRxErrorQ2 = 1<<22,
	icrRxErrorQ3 = 1<<23,
	icrMIIPhySTC = 1<<28,
	icrSMIdone = 1<<29,
	icrEtherIntSum = 1<<31
	};


	/* The Rx and Tx descriptor lists. */
	typedef struct {
	#ifdef DESC_BE
	u16 byte_cnt;
	u16 reserved;
	#else
	u16 reserved;
	u16 byte_cnt;
	#endif
	u32 cmdstat;
	u32 next;
	u32 buff_ptr;
	} __attribute__ ((packed)) gt96100_td_t;

	typedef struct {
	#ifdef DESC_BE
	u16 buff_sz;
	u16 byte_cnt;
	#else
	u16 byte_cnt;
	u16 buff_sz;
	#endif
	u32 cmdstat;
	u32 next;
	u32 buff_ptr;
	} __attribute__ ((packed)) gt96100_rd_t;


	/* Values for the Tx command-status descriptor entry. */
	enum td_cmdstat {
	txOwn = 1<<31,
	txAutoMode = 1<<30,
	txEI = 1<<23,
	txGenCRC = 1<<22,
	txPad = 1<<18,
	txFirst = 1<<17,
	txLast = 1<<16,
	txErrorSummary = 1<<15,
	txReTxCntMask = 0x0f<<10,
	txReTxCntBit = 10,
	txCollision = 1<<9,
	txReTxLimit = 1<<8,
	txUnderrun = 1<<6,
	txLateCollision = 1<<5
	};


	/* Values for the Rx command-status descriptor entry. */
	enum rd_cmdstat {
	rxOwn = 1<<31,
	rxAutoMode = 1<<30,
	rxEI = 1<<23,
	rxFirst = 1<<17,
	rxLast = 1<<16,
	rxErrorSummary = 1<<15,
	rxIGMP = 1<<14,
	rxHashExpired = 1<<13,
	rxMissedFrame = 1<<12,
	rxFrameType = 1<<11,
	rxShortFrame = 1<<8,
	rxMaxFrameLen = 1<<7,
	rxOverrun = 1<<6,
	rxCollision = 1<<4,
	rxCRCError = 1
	};

	/* Bit fields of a Hash Table Entry */
	enum hash_table_entry {
	hteValid = 1,
	hteSkip = 2,
	hteRD = 4
	};

	// The MIB counters
	typedef struct {
	u32 byteReceived;
	u32 byteSent;
	u32 framesReceived;
	u32 framesSent;
	u32 totalByteReceived;
	u32 totalFramesReceived;
	u32 broadcastFramesReceived;
	u32 multicastFramesReceived;
	u32 cRCError;
	u32 oversizeFrames;
	u32 fragments;
	u32 jabber;
	u32 collision;
	u32 lateCollision;
	u32 frames64;
	u32 frames65_127;
	u32 frames128_255;
	u32 frames256_511;
	u32 frames512_1023;
	u32 frames1024_MaxSize;
	u32 macRxError;
	u32 droppedFrames;
	u32 outMulticastFrames;
	u32 outBroadcastFrames;
	u32 undersizeFrames;
	} mib_counters_t;


	struct gt96100_private {
	gt96100_rd_t* rx_ring;
	gt96100_td_t* tx_ring;
	// The Rx and Tx rings must be 16-byte aligned
	dma_addr_t rx_ring_dma;
	dma_addr_t tx_ring_dma;
	char* hash_table;
	// The Hash Table must be 8-byte aligned
	dma_addr_t hash_table_dma;
	int hash_mode;

	// The Rx buffers must be 8-byte aligned
	char* rx_buff;
	dma_addr_t rx_buff_dma;
	// Tx buffers (tx_skbuff[i]->data) with less than 8 bytes
	// of payload must be 8-byte aligned
	struct sk_buff* tx_skbuff[TX_RING_SIZE];
	int rx_next_out; /* The next free ring entry to receive */
	int tx_next_in; /* The next free ring entry to send */
	int tx_next_out; /* The last ring entry the ISR processed */
	int tx_count; /* current # of pkts waiting to be sent in Tx ring */
	int intr_work_done; /* number of Rx and Tx pkts processed in the isr */
	int tx_full; /* Tx ring is full */

	mib_counters_t mib;
	struct net_device_stats stats;

	int port_num; // 0 or 1
	int chip_rev;
	u32 port_offset;

	int phy_addr; // PHY address
	u32 last_psr; // last value of the port status register

	int options; /* User-settable misc. driver options. */
	struct timer_list timer;
	spinlock_t lock; /* Serialise access to device */
	};

	#endif