mv_eth.h

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/*
 * (C) Copyright 2003
 * Ingo Assmus <[e-mail]>
 *
 * based on - Driver for MV64360X ethernet ports
 * Copyright (C) 2002 [e-mail]
 *
 * 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
 */

/*
 * mv_eth.h - header file for the polled mode GT ethernet driver
 */

#ifndef __DB64360_ETH_H__
#define __DB64360_ETH_H__

#include <asm/types.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <common.h>
#include <net.h>
#include "mv_regs.h"
#include "../common/ppc_error_no.h"


/*************************************************************************
**************************************************************************
**************************************************************************
*  The first part is the high level driver of the gigE ethernet ports.	 *
**************************************************************************
**************************************************************************
*************************************************************************/
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif

/* In case not using SG on Tx, define MAX_SKB_FRAGS as 0 */
#ifndef MAX_SKB_FRAGS
#define MAX_SKB_FRAGS 0
#endif

/* Port attributes */
/*#define MAX_RX_QUEUE_NUM	8*/
/*#define MAX_TX_QUEUE_NUM	8*/
#define MAX_RX_QUEUE_NUM	1
#define MAX_TX_QUEUE_NUM	1


/* Use one TX queue and one RX queue */
#define MV64360_TX_QUEUE_NUM 1
#define MV64360_RX_QUEUE_NUM 1

/*
 * Number of RX / TX descriptors on RX / TX rings.
 * Note that allocating RX descriptors is done by allocating the RX
 * ring AND a preallocated RX buffers (skb's) for each descriptor.
 * The TX descriptors only allocates the TX descriptors ring,
 * with no pre allocated TX buffers (skb's are allocated by higher layers.
 */

/* Default TX ring size is 10 descriptors */
#ifdef CONFIG_MV64360_ETH_TXQUEUE_SIZE
#define MV64360_TX_QUEUE_SIZE CONFIG_MV64360_ETH_TXQUEUE_SIZE
#else
#define MV64360_TX_QUEUE_SIZE 4
#endif

/* Default RX ring size is 4 descriptors */
#ifdef	CONFIG_MV64360_ETH_RXQUEUE_SIZE
#define MV64360_RX_QUEUE_SIZE CONFIG_MV64360_ETH_RXQUEUE_SIZE
#else
#define MV64360_RX_QUEUE_SIZE 4
#endif

#ifdef CONFIG_RX_BUFFER_SIZE
#define MV64360_RX_BUFFER_SIZE CONFIG_RX_BUFFER_SIZE
#else
#define MV64360_RX_BUFFER_SIZE 1600
#endif

#ifdef CONFIG_TX_BUFFER_SIZE
#define MV64360_TX_BUFFER_SIZE CONFIG_TX_BUFFER_SIZE
#else
#define MV64360_TX_BUFFER_SIZE 1600
#endif


/*
 *	Network device statistics. Akin to the 2.0 ether stats but
 *	with byte counters.
 */

struct net_device_stats
{
	unsigned long	rx_packets;		/* total packets received	*/
	unsigned long	tx_packets;		/* total packets transmitted	*/
	unsigned long	rx_bytes;		/* total bytes received		*/
	unsigned long	tx_bytes;		/* total bytes transmitted	*/
	unsigned long	rx_errors;		/* bad packets received		*/
	unsigned long	tx_errors;		/* packet transmit problems	*/
	unsigned long	rx_dropped;		/* no space in linux buffers	*/
	unsigned long	tx_dropped;		/* no space available in linux	*/
	unsigned long	multicast;		/* multicast packets received	*/
	unsigned long	collisions;

	/* detailed rx_errors: */
	unsigned long	rx_length_errors;
	unsigned long	rx_over_errors;		/* receiver ring buff overflow	*/
	unsigned long	rx_crc_errors;		/* recved pkt with crc error	*/
	unsigned long	rx_frame_errors;	/* recv'd frame alignment error */
	unsigned long	rx_fifo_errors;		/* recv'r fifo overrun		*/
	unsigned long	rx_missed_errors;	/* receiver missed packet	*/

	/* detailed tx_errors */
	unsigned long	tx_aborted_errors;
	unsigned long	tx_carrier_errors;
	unsigned long	tx_fifo_errors;
	unsigned long	tx_heartbeat_errors;
	unsigned long	tx_window_errors;

	/* for cslip etc */
	unsigned long	rx_compressed;
	unsigned long	tx_compressed;
};


/* Private data structure used for ethernet device */
struct mv64360_eth_priv {
    unsigned int port_num;
    struct net_device_stats *stats;

/* to buffer area aligned */
    char * p_eth_tx_buffer[MV64360_TX_QUEUE_SIZE+1];	/*pointers to alligned tx buffs in memory space */
    char * p_eth_rx_buffer[MV64360_RX_QUEUE_SIZE+1];	/*pointers to allinged rx buffs in memory space */

    /* Size of Tx Ring per queue */
    unsigned int tx_ring_size [MAX_TX_QUEUE_NUM];


    /* Size of Rx Ring per queue */
    unsigned int rx_ring_size [MAX_RX_QUEUE_NUM];

    /* Magic Number for Ethernet running */
    unsigned int eth_running;

};


int mv64360_eth_init (struct eth_device *dev);
int mv64360_eth_stop (struct eth_device *dev);
int mv64360_eth_start_xmit (struct eth_device*, volatile void* packet, int length);
/*	return db64360_eth0_poll(); */

int mv64360_eth_open (struct eth_device *dev);


/*************************************************************************
**************************************************************************
**************************************************************************
*  The second part is the low level driver of the gigE ethernet ports.	 *
**************************************************************************
**************************************************************************
*************************************************************************/


/********************************************************************************
 * Header File for : MV-643xx network interface header
 *
 * DESCRIPTION:
 *	 This header file contains macros typedefs and function declaration for
 *	 the Marvell Gig Bit Ethernet Controller.
 *
 * DEPENDENCIES:
 *	 None.
 *
 *******************************************************************************/


#ifdef CONFIG_SPECIAL_CONSISTENT_MEMORY
#ifdef CONFIG_MV64360_SRAM_CACHEABLE
/* In case SRAM is cacheable but not cache coherent */
#define D_CACHE_FLUSH_LINE(addr, offset)       \
{		    \
  __asm__ __volatile__ ("dcbf %0,%1" : : "r" (addr), "r" (offset)); \
}
#else
/* In case SRAM is cache coherent or non-cacheable */
#define D_CACHE_FLUSH_LINE(addr, offset) ;
#endif
#else
#ifdef CONFIG_NOT_COHERENT_CACHE
/* In case of descriptors on DDR but not cache coherent */
#define D_CACHE_FLUSH_LINE(addr, offset)       \
{		    \
  __asm__ __volatile__ ("dcbf %0,%1" : : "r" (addr), "r" (offset)); \
}
#else
/* In case of descriptors on DDR and cache coherent */
#define D_CACHE_FLUSH_LINE(addr, offset) ;
#endif /* CONFIG_NOT_COHERENT_CACHE */
#endif /* CONFIG_SPECIAL_CONSISTENT_MEMORY */


#define CPU_PIPE_FLUSH		   \
{		  \
  __asm__ __volatile__ ("eieio");	  \
}


/* defines  */

/* Default port configuration value */
#define PORT_CONFIG_VALUE			\
	     ETH_UNICAST_NORMAL_MODE		|   \
	     ETH_DEFAULT_RX_QUEUE_0		|   \
	     ETH_DEFAULT_RX_ARP_QUEUE_0		|   \
	     ETH_RECEIVE_BC_IF_NOT_IP_OR_ARP	|   \
	     ETH_RECEIVE_BC_IF_IP		|   \
	     ETH_RECEIVE_BC_IF_ARP		|   \
	     ETH_CAPTURE_TCP_FRAMES_DIS		|   \
	     ETH_CAPTURE_UDP_FRAMES_DIS		|   \
	     ETH_DEFAULT_RX_TCP_QUEUE_0		|   \
	     ETH_DEFAULT_RX_UDP_QUEUE_0		|   \
	     ETH_DEFAULT_RX_BPDU_QUEUE_0

/* Default port extend configuration value */
#define PORT_CONFIG_EXTEND_VALUE		\
	     ETH_SPAN_BPDU_PACKETS_AS_NORMAL	|   \
	     ETH_PARTITION_DISABLE


/* Default sdma control value */
#ifdef CONFIG_NOT_COHERENT_CACHE
#define PORT_SDMA_CONFIG_VALUE				\
			 ETH_RX_BURST_SIZE_16_64BIT	|	\
			 GT_ETH_IPG_INT_RX(0)			|	\
			 ETH_TX_BURST_SIZE_16_64BIT;
#else
#define PORT_SDMA_CONFIG_VALUE			\
			 ETH_RX_BURST_SIZE_4_64BIT	|	\
			 GT_ETH_IPG_INT_RX(0)			|	\
			 ETH_TX_BURST_SIZE_4_64BIT;
#endif

#define GT_ETH_IPG_INT_RX(value)		\
	    ((value & 0x3fff) << 8)

/* Default port serial control value */
#define PORT_SERIAL_CONTROL_VALUE			    \
			ETH_FORCE_LINK_PASS			|	\
			ETH_ENABLE_AUTO_NEG_FOR_DUPLX		|	\
			ETH_DISABLE_AUTO_NEG_FOR_FLOW_CTRL	|	\
			ETH_ADV_SYMMETRIC_FLOW_CTRL		|	\
			ETH_FORCE_FC_MODE_NO_PAUSE_DIS_TX	|	\
			ETH_FORCE_BP_MODE_NO_JAM		|	\
			BIT9					|	\
			ETH_DO_NOT_FORCE_LINK_FAIL		|	\
			ETH_RETRANSMIT_16_ETTEMPTS		|	\
			ETH_ENABLE_AUTO_NEG_SPEED_GMII		|	\
			ETH_DTE_ADV_0				|	\
			ETH_DISABLE_AUTO_NEG_BYPASS		|	\
			ETH_AUTO_NEG_NO_CHANGE			|	\
			ETH_MAX_RX_PACKET_1552BYTE		|	\
			ETH_CLR_EXT_LOOPBACK			|	\
			ETH_SET_FULL_DUPLEX_MODE		|	\
			ETH_ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX;

#define RX_BUFFER_MAX_SIZE  0xFFFF
#define TX_BUFFER_MAX_SIZE  0xFFFF   /* Buffer are limited to 64k */

#define RX_BUFFER_MIN_SIZE  0x8
#define TX_BUFFER_MIN_SIZE  0x8

/* Tx WRR confoguration macros */
#define PORT_MAX_TRAN_UNIT	    0x24    /* MTU register (default) 9KByte */
#define PORT_MAX_TOKEN_BUCKET_SIZE  0x_fFFF  /* PMTBS register (default)      */
#define PORT_TOKEN_RATE		    1023    /* PTTBRC register (default)     */

/* MAC accepet/reject macros */
#define ACCEPT_MAC_ADDR	    0
#define REJECT_MAC_ADDR	    1

/* Size of a Tx/Rx descriptor used in chain list data structure */
#define RX_DESC_ALIGNED_SIZE		0x20
#define TX_DESC_ALIGNED_SIZE		0x20

/* An offest in Tx descriptors to store data for buffers less than 8 Bytes */
#define TX_BUF_OFFSET_IN_DESC	    0x18
/* Buffer offset from buffer pointer */
#define RX_BUF_OFFSET				0x2

/* Gap define */
#define ETH_BAR_GAP					0x8
#define ETH_SIZE_REG_GAP				0x8
#define ETH_HIGH_ADDR_REMAP_REG_GAP			0x4
#define ETH_PORT_ACCESS_CTRL_GAP			0x4

/* Gigabit Ethernet Unit Global Registers */

/* MIB Counters register definitions */
#define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW   0x0
#define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH  0x4
#define ETH_MIB_BAD_OCTETS_RECEIVED	   0x8
#define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR  0xc
#define ETH_MIB_GOOD_FRAMES_RECEIVED	   0x10
#define ETH_MIB_BAD_FRAMES_RECEIVED	   0x14
#define ETH_MIB_BROADCAST_FRAMES_RECEIVED  0x18
#define ETH_MIB_MULTICAST_FRAMES_RECEIVED  0x1c
#define ETH_MIB_FRAMES_64_OCTETS	   0x20
#define ETH_MIB_FRAMES_65_TO_127_OCTETS	   0x24
#define ETH_MIB_FRAMES_128_TO_255_OCTETS   0x28
#define ETH_MIB_FRAMES_256_TO_511_OCTETS   0x2c
#define ETH_MIB_FRAMES_512_TO_1023_OCTETS  0x30
#define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS  0x34
#define ETH_MIB_GOOD_OCTETS_SENT_LOW	   0x38
#define ETH_MIB_GOOD_OCTETS_SENT_HIGH	   0x3c
#define ETH_MIB_GOOD_FRAMES_SENT	   0x40
#define ETH_MIB_EXCESSIVE_COLLISION	   0x44
#define ETH_MIB_MULTICAST_FRAMES_SENT	   0x48
#define ETH_MIB_BROADCAST_FRAMES_SENT	   0x4c
#define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED 0x50
#define ETH_MIB_FC_SENT			   0x54
#define ETH_MIB_GOOD_FC_RECEIVED	   0x58
#define ETH_MIB_BAD_FC_RECEIVED		   0x5c
#define ETH_MIB_UNDERSIZE_RECEIVED	   0x60
#define ETH_MIB_FRAGMENTS_RECEIVED	   0x64
#define ETH_MIB_OVERSIZE_RECEIVED	   0x68
#define ETH_MIB_JABBER_RECEIVED		   0x6c
#define ETH_MIB_MAC_RECEIVE_ERROR	   0x70
#define ETH_MIB_BAD_CRC_EVENT		   0x74
#define ETH_MIB_COLLISION		   0x78
#define ETH_MIB_LATE_COLLISION		   0x7c

/* Port serial status reg (PSR) */
#define ETH_INTERFACE_GMII_MII				0
#define ETH_INTERFACE_PCM				BIT0
#define ETH_LINK_IS_DOWN				0
#define ETH_LINK_IS_UP					BIT1
#define ETH_PORT_AT_HALF_DUPLEX				0
#define ETH_PORT_AT_FULL_DUPLEX				BIT2
#define ETH_RX_FLOW_CTRL_DISABLED			0
#define ETH_RX_FLOW_CTRL_ENBALED			BIT3
#define ETH_GMII_SPEED_100_10				0
#define ETH_GMII_SPEED_1000				BIT4
#define ETH_MII_SPEED_10				0
#define ETH_MII_SPEED_100				BIT5
#define ETH_NO_TX					0
#define ETH_TX_IN_PROGRESS				BIT7
#define ETH_BYPASS_NO_ACTIVE				0
#define ETH_BYPASS_ACTIVE				BIT8
#define ETH_PORT_NOT_AT_PARTITION_STATE			0
#define ETH_PORT_AT_PARTITION_STATE			BIT9
#define ETH_PORT_TX_FIFO_NOT_EMPTY			0
#define ETH_PORT_TX_FIFO_EMPTY				BIT10


/* These macros describes the Port configuration reg (Px_cR) bits */
#define ETH_UNICAST_NORMAL_MODE				0
#define ETH_UNICAST_PROMISCUOUS_MODE			BIT0
#define ETH_DEFAULT_RX_QUEUE_0				0
#define ETH_DEFAULT_RX_QUEUE_1				BIT1
#define ETH_DEFAULT_RX_QUEUE_2				BIT2
#define ETH_DEFAULT_RX_QUEUE_3				(BIT2 | BIT1)
#define ETH_DEFAULT_RX_QUEUE_4				BIT3
#define ETH_DEFAULT_RX_QUEUE_5				(BIT3 | BIT1)
#define ETH_DEFAULT_RX_QUEUE_6				(BIT3 | BIT2)
#define ETH_DEFAULT_RX_QUEUE_7				(BIT3 | BIT2 | BIT1)
#define ETH_DEFAULT_RX_ARP_QUEUE_0			0
#define ETH_DEFAULT_RX_ARP_QUEUE_1			BIT4
#define ETH_DEFAULT_RX_ARP_QUEUE_2			BIT5
#define ETH_DEFAULT_RX_ARP_QUEUE_3			(BIT5 | BIT4)
#define ETH_DEFAULT_RX_ARP_QUEUE_4			BIT6
#define ETH_DEFAULT_RX_ARP_QUEUE_5			(BIT6 | BIT4)
#define ETH_DEFAULT_RX_ARP_QUEUE_6			(BIT6 | BIT5)
#define ETH_DEFAULT_RX_ARP_QUEUE_7			(BIT6 | BIT5 | BIT4)
#define ETH_RECEIVE_BC_IF_NOT_IP_OR_ARP			0
#define ETH_REJECT_BC_IF_NOT_IP_OR_ARP			BIT7
#define ETH_RECEIVE_BC_IF_IP				0
#define ETH_REJECT_BC_IF_IP				BIT8
#define ETH_RECEIVE_BC_IF_ARP				0
#define ETH_REJECT_BC_IF_ARP				BIT9
#define ETH_TX_AM_NO_UPDATE_ERROR_SUMMARY		BIT12
#define ETH_CAPTURE_TCP_FRAMES_DIS			0
#define ETH_CAPTURE_TCP_FRAMES_EN			BIT14
#define ETH_CAPTURE_UDP_FRAMES_DIS			0
#define ETH_CAPTURE_UDP_FRAMES_EN			BIT15
#define ETH_DEFAULT_RX_TCP_QUEUE_0			0
#define ETH_DEFAULT_RX_TCP_QUEUE_1			BIT16
#define ETH_DEFAULT_RX_TCP_QUEUE_2			BIT17
#define ETH_DEFAULT_RX_TCP_QUEUE_3			(BIT17 | BIT16)
#define ETH_DEFAULT_RX_TCP_QUEUE_4			BIT18
#define ETH_DEFAULT_RX_TCP_QUEUE_5			(BIT18 | BIT16)
#define ETH_DEFAULT_RX_TCP_QUEUE_6			(BIT18 | BIT17)
#define ETH_DEFAULT_RX_TCP_QUEUE_7			(BIT18 | BIT17 | BIT16)
#define ETH_DEFAULT_RX_UDP_QUEUE_0			0
#define ETH_DEFAULT_RX_UDP_QUEUE_1			BIT19
#define ETH_DEFAULT_RX_UDP_QUEUE_2			BIT20
#define ETH_DEFAULT_RX_UDP_QUEUE_3			(BIT20 | BIT19)
#define ETH_DEFAULT_RX_UDP_QUEUE_4			(BIT21
#define ETH_DEFAULT_RX_UDP_QUEUE_5			(BIT21 | BIT19)
#define ETH_DEFAULT_RX_UDP_QUEUE_6			(BIT21 | BIT20)
#define ETH_DEFAULT_RX_UDP_QUEUE_7			(BIT21 | BIT20 | BIT19)
#define ETH_DEFAULT_RX_BPDU_QUEUE_0			 0