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Release 4.11 drivers/net/ethernet/freescale/gianfar.h

Directory: drivers/net/ethernet/freescale
/*
 * drivers/net/ethernet/freescale/gianfar.h
 *
 * Gianfar Ethernet Driver
 * Driver for FEC on MPC8540 and TSEC on MPC8540/MPC8560
 * Based on 8260_io/fcc_enet.c
 *
 * Author: Andy Fleming
 * Maintainer: Kumar Gala
 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
 *
 * Copyright 2002-2009, 2011-2013 Freescale Semiconductor, Inc.
 *
 * 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.
 *
 *  Still left to do:
 *      -Add support for module parameters
 *      -Add patch for ethtool phys id
 */
#ifndef __GIANFAR_H

#define __GIANFAR_H

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/mii.h>
#include <linux/phy.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <linux/uaccess.h>
#include <linux/module.h>
#include <linux/crc32.h>
#include <linux/workqueue.h>
#include <linux/ethtool.h>


struct ethtool_flow_spec_container {
	
struct ethtool_rx_flow_spec fs;
	
struct list_head list;
};


struct ethtool_rx_list {
	
struct list_head list;
	
unsigned int count;
};

/* The maximum number of packets to be handled in one call of gfar_poll */

#define GFAR_DEV_WEIGHT 64

/* Length for FCB */

#define GMAC_FCB_LEN 8

/* Length for TxPAL */

#define GMAC_TXPAL_LEN 16

/* Default padding amount */

#define DEFAULT_PADDING 2

/* Number of bytes to align the rx bufs to */

#define RXBUF_ALIGNMENT 64


#define PHY_INIT_TIMEOUT 100000


#define DRV_NAME "gfar-enet"
extern const char gfar_driver_version[];

/* MAXIMUM NUMBER OF QUEUES SUPPORTED */

#define MAX_TX_QS	0x8

#define MAX_RX_QS	0x8

/* MAXIMUM NUMBER OF GROUPS SUPPORTED */

#define MAXGROUPS 0x2

/* These need to be powers of 2 for this driver */

#define DEFAULT_TX_RING_SIZE	256

#define DEFAULT_RX_RING_SIZE	256


#define GFAR_RX_BUFF_ALLOC	16


#define GFAR_RX_MAX_RING_SIZE   256

#define GFAR_TX_MAX_RING_SIZE   256


#define GFAR_MAX_FIFO_THRESHOLD 511

#define GFAR_MAX_FIFO_STARVE	511

#define GFAR_MAX_FIFO_STARVE_OFF 511


#define FBTHR_SHIFT        24

#define DEFAULT_RX_LFC_THR  16

#define DEFAULT_LFC_PTVVAL  4

/* prevent fragmenation by HW in DSA environments */

#define GFAR_RXB_SIZE roundup(1536 + 8, 64)

#define GFAR_SKBFRAG_SIZE (RXBUF_ALIGNMENT + GFAR_RXB_SIZE \
                          + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))

#define GFAR_RXB_TRUESIZE 2048


#define TX_RING_MOD_MASK(size) (size-1)

#define RX_RING_MOD_MASK(size) (size-1)

#define GFAR_JUMBO_FRAME_SIZE 9600


#define DEFAULT_FIFO_TX_THR 0x100

#define DEFAULT_FIFO_TX_STARVE 0x40

#define DEFAULT_FIFO_TX_STARVE_OFF 0x80

#define DEFAULT_BD_STASH 1

#define DEFAULT_STASH_LENGTH	96

#define DEFAULT_STASH_INDEX	0

/* The number of Exact Match registers */

#define GFAR_EM_NUM	15

/* Latency of interface clock in nanoseconds */
/* Interface clock latency , in this case, means the
 * time described by a value of 1 in the interrupt
 * coalescing registers' time fields.  Since those fields
 * refer to the time it takes for 64 clocks to pass, the
 * latencies are as such:
 * GBIT = 125MHz => 8ns/clock => 8*64 ns / tick
 * 100 = 25 MHz => 40ns/clock => 40*64 ns / tick
 * 10 = 2.5 MHz => 400ns/clock => 400*64 ns / tick
 */

#define GFAR_GBIT_TIME  512

#define GFAR_100_TIME   2560

#define GFAR_10_TIME    25600


#define DEFAULT_TX_COALESCE 1

#define DEFAULT_TXCOUNT	16

#define DEFAULT_TXTIME	21


#define DEFAULT_RXTIME	21


#define DEFAULT_RX_COALESCE 0

#define DEFAULT_RXCOUNT	0


#define GFAR_SUPPORTED (SUPPORTED_10baseT_Half \
                | SUPPORTED_10baseT_Full \
                | SUPPORTED_100baseT_Half \
                | SUPPORTED_100baseT_Full \
                | SUPPORTED_Autoneg \
                | SUPPORTED_MII)


#define GFAR_SUPPORTED_GBIT SUPPORTED_1000baseT_Full

/* TBI register addresses */

#define MII_TBICON		0x11

/* TBICON register bit fields */

#define TBICON_CLK_SELECT	0x0020

/* MAC register bits */

#define MACCFG1_SOFT_RESET	0x80000000

#define MACCFG1_RESET_RX_MC	0x00080000

#define MACCFG1_RESET_TX_MC	0x00040000

#define MACCFG1_RESET_RX_FUN	0x00020000

#define	MACCFG1_RESET_TX_FUN	0x00010000

#define MACCFG1_LOOPBACK	0x00000100

#define MACCFG1_RX_FLOW		0x00000020

#define MACCFG1_TX_FLOW		0x00000010

#define MACCFG1_SYNCD_RX_EN	0x00000008

#define MACCFG1_RX_EN		0x00000004

#define MACCFG1_SYNCD_TX_EN	0x00000002

#define MACCFG1_TX_EN		0x00000001


#define MACCFG2_INIT_SETTINGS	0x00007205

#define MACCFG2_FULL_DUPLEX	0x00000001

#define MACCFG2_IF              0x00000300

#define MACCFG2_MII             0x00000100

#define MACCFG2_GMII            0x00000200

#define MACCFG2_HUGEFRAME	0x00000020

#define MACCFG2_LENGTHCHECK	0x00000010

#define MACCFG2_MPEN		0x00000008


#define ECNTRL_FIFM		0x00008000

#define ECNTRL_INIT_SETTINGS	0x00001000

#define ECNTRL_TBI_MODE         0x00000020

#define ECNTRL_REDUCED_MODE	0x00000010

#define ECNTRL_R100		0x00000008

#define ECNTRL_REDUCED_MII_MODE	0x00000004

#define ECNTRL_SGMII_MODE	0x00000002


#define MRBLR_INIT_SETTINGS	DEFAULT_RX_BUFFER_SIZE


#define MINFLR_INIT_SETTINGS	0x00000040

/* Tqueue control */

#define TQUEUE_EN0		0x00008000

#define TQUEUE_EN1		0x00004000

#define TQUEUE_EN2		0x00002000

#define TQUEUE_EN3		0x00001000

#define TQUEUE_EN4		0x00000800

#define TQUEUE_EN5		0x00000400

#define TQUEUE_EN6		0x00000200

#define TQUEUE_EN7		0x00000100

#define TQUEUE_EN_ALL		0x0000FF00


#define TR03WT_WT0_MASK		0xFF000000

#define TR03WT_WT1_MASK		0x00FF0000

#define TR03WT_WT2_MASK		0x0000FF00

#define TR03WT_WT3_MASK		0x000000FF


#define TR47WT_WT4_MASK		0xFF000000

#define TR47WT_WT5_MASK		0x00FF0000

#define TR47WT_WT6_MASK		0x0000FF00

#define TR47WT_WT7_MASK		0x000000FF

/* Rqueue control */

#define RQUEUE_EX0		0x00800000

#define RQUEUE_EX1		0x00400000

#define RQUEUE_EX2		0x00200000

#define RQUEUE_EX3		0x00100000

#define RQUEUE_EX4		0x00080000

#define RQUEUE_EX5		0x00040000

#define RQUEUE_EX6		0x00020000

#define RQUEUE_EX7		0x00010000

#define RQUEUE_EX_ALL		0x00FF0000


#define RQUEUE_EN0		0x00000080

#define RQUEUE_EN1		0x00000040

#define RQUEUE_EN2		0x00000020

#define RQUEUE_EN3		0x00000010

#define RQUEUE_EN4		0x00000008

#define RQUEUE_EN5		0x00000004

#define RQUEUE_EN6		0x00000002

#define RQUEUE_EN7		0x00000001

#define RQUEUE_EN_ALL		0x000000FF

/* Init to do tx snooping for buffers and descriptors */

#define DMACTRL_INIT_SETTINGS   0x000000c3

#define DMACTRL_GRS             0x00000010

#define DMACTRL_GTS             0x00000008


#define TSTAT_CLEAR_THALT_ALL	0xFF000000

#define TSTAT_CLEAR_THALT	0x80000000

#define TSTAT_CLEAR_THALT0	0x80000000

#define TSTAT_CLEAR_THALT1	0x40000000

#define TSTAT_CLEAR_THALT2	0x20000000

#define TSTAT_CLEAR_THALT3	0x10000000

#define TSTAT_CLEAR_THALT4	0x08000000

#define TSTAT_CLEAR_THALT5	0x04000000

#define TSTAT_CLEAR_THALT6	0x02000000

#define TSTAT_CLEAR_THALT7	0x01000000

/* Interrupt coalescing macros */

#define IC_ICEN			0x80000000

#define IC_ICFT_MASK		0x1fe00000

#define IC_ICFT_SHIFT		21

#define mk_ic_icft(x)		\
	(((unsigned int)x << IC_ICFT_SHIFT)&IC_ICFT_MASK)

#define IC_ICTT_MASK		0x0000ffff

#define mk_ic_ictt(x)		(x&IC_ICTT_MASK)


#define mk_ic_value(count, time) (IC_ICEN | \
                                mk_ic_icft(count) | \
                                mk_ic_ictt(time))

#define get_icft_value(ic)	(((unsigned long)ic & IC_ICFT_MASK) >> \
                                 IC_ICFT_SHIFT)

#define get_ictt_value(ic)	((unsigned long)ic & IC_ICTT_MASK)


#define DEFAULT_TXIC mk_ic_value(DEFAULT_TXCOUNT, DEFAULT_TXTIME)

#define DEFAULT_RXIC mk_ic_value(DEFAULT_RXCOUNT, DEFAULT_RXTIME)


#define skip_bd(bdp, stride, base, ring_size) ({ \
        typeof(bdp) new_bd = (bdp) + (stride); \
        (new_bd >= (base) + (ring_size)) ? (new_bd - (ring_size)) : new_bd; })


#define next_bd(bdp, base, ring_size) skip_bd(bdp, 1, base, ring_size)


#define RCTRL_TS_ENABLE 	0x01000000

#define RCTRL_PAL_MASK		0x001f0000

#define RCTRL_LFC		0x00004000

#define RCTRL_VLEX		0x00002000

#define RCTRL_FILREN		0x00001000

#define RCTRL_GHTX		0x00000400

#define RCTRL_IPCSEN		0x00000200

#define RCTRL_TUCSEN		0x00000100

#define RCTRL_PRSDEP_MASK	0x000000c0

#define RCTRL_PRSDEP_INIT	0x000000c0

#define RCTRL_PRSFM		0x00000020

#define RCTRL_PROM		0x00000008

#define RCTRL_EMEN		0x00000002

#define RCTRL_REQ_PARSER	(RCTRL_VLEX | RCTRL_IPCSEN | \
                                 RCTRL_TUCSEN | RCTRL_FILREN)

#define RCTRL_CHECKSUMMING	(RCTRL_IPCSEN | RCTRL_TUCSEN | \
                                RCTRL_PRSDEP_INIT)

#define RCTRL_EXTHASH		(RCTRL_GHTX)

#define RCTRL_VLAN		(RCTRL_PRSDEP_INIT)

#define RCTRL_PADDING(x)	((x << 16) & RCTRL_PAL_MASK)



#define RSTAT_CLEAR_RHALT	0x00800000

#define RSTAT_CLEAR_RXF0	0x00000080

#define RSTAT_RXF_MASK		0x000000ff


#define TCTRL_IPCSEN		0x00004000

#define TCTRL_TUCSEN		0x00002000

#define TCTRL_VLINS		0x00001000

#define TCTRL_THDF		0x00000800

#define TCTRL_RFCPAUSE		0x00000010

#define TCTRL_TFCPAUSE		0x00000008

#define TCTRL_TXSCHED_MASK	0x00000006

#define TCTRL_TXSCHED_INIT	0x00000000
/* priority scheduling */

#define TCTRL_TXSCHED_PRIO	0x00000002
/* weighted round-robin scheduling (WRRS) */

#define TCTRL_TXSCHED_WRRS	0x00000004
/* default WRRS weight and policy setting,
 * tailored to the tr03wt and tr47wt registers:
 * equal weight for all Tx Qs, measured in 64byte units
 */

#define DEFAULT_WRRS_WEIGHT	0x18181818


#define TCTRL_INIT_CSUM		(TCTRL_TUCSEN | TCTRL_IPCSEN)


#define IEVENT_INIT_CLEAR	0xffffffff

#define IEVENT_BABR		0x80000000

#define IEVENT_RXC		0x40000000

#define IEVENT_BSY		0x20000000

#define IEVENT_EBERR		0x10000000

#define IEVENT_MSRO		0x04000000

#define IEVENT_GTSC		0x02000000

#define IEVENT_BABT		0x01000000

#define IEVENT_TXC		0x00800000

#define IEVENT_TXE		0x00400000

#define IEVENT_TXB		0x00200000

#define IEVENT_TXF		0x00100000

#define IEVENT_LC		0x00040000

#define IEVENT_CRL		0x00020000

#define IEVENT_XFUN		0x00010000

#define IEVENT_RXB0		0x00008000

#define IEVENT_MAG		0x00000800

#define IEVENT_GRSC		0x00000100

#define IEVENT_RXF0		0x00000080

#define IEVENT_FGPI		0x00000010

#define IEVENT_FIR		0x00000008

#define IEVENT_FIQ		0x00000004

#define IEVENT_DPE		0x00000002

#define IEVENT_PERR		0x00000001

#define IEVENT_RX_MASK          (IEVENT_RXB0 | IEVENT_RXF0 | IEVENT_BSY)

#define IEVENT_TX_MASK          (IEVENT_TXB | IEVENT_TXF)

#define IEVENT_RTX_MASK         (IEVENT_RX_MASK | IEVENT_TX_MASK)

#define IEVENT_ERR_MASK         \
(IEVENT_RXC | IEVENT_BSY | IEVENT_EBERR | IEVENT_MSRO | \
 IEVENT_BABT | IEVENT_TXC | IEVENT_TXE | IEVENT_LC \
 | IEVENT_CRL | IEVENT_XFUN | IEVENT_DPE | IEVENT_PERR \
 | IEVENT_MAG | IEVENT_BABR)


#define IMASK_INIT_CLEAR	0x00000000

#define IMASK_BABR              0x80000000

#define IMASK_RXC               0x40000000

#define IMASK_BSY               0x20000000

#define IMASK_EBERR             0x10000000

#define IMASK_MSRO		0x04000000

#define IMASK_GTSC              0x02000000

#define IMASK_BABT		0x01000000

#define IMASK_TXC               0x00800000

#define IMASK_TXEEN		0x00400000

#define IMASK_TXBEN		0x00200000

#define IMASK_TXFEN             0x00100000

#define IMASK_LC		0x00040000

#define IMASK_CRL		0x00020000

#define IMASK_XFUN		0x00010000

#define IMASK_RXB0              0x00008000

#define IMASK_MAG		0x00000800

#define IMASK_GRSC              0x00000100

#define IMASK_RXFEN0		0x00000080

#define IMASK_FGPI		0x00000010

#define IMASK_FIR		0x00000008

#define IMASK_FIQ		0x00000004

#define IMASK_DPE		0x00000002

#define IMASK_PERR		0x00000001

#define IMASK_DEFAULT  (IMASK_TXEEN | IMASK_TXFEN | IMASK_TXBEN | \
                IMASK_RXFEN0 | IMASK_BSY | IMASK_EBERR | IMASK_BABR | \
                IMASK_XFUN | IMASK_RXC | IMASK_BABT | IMASK_DPE \
                | IMASK_PERR)

#define IMASK_RX_DEFAULT (IMASK_RXFEN0 | IMASK_BSY)

#define IMASK_TX_DEFAULT (IMASK_TXFEN | IMASK_TXBEN)


#define IMASK_RX_DISABLED ((~(IMASK_RX_DEFAULT)) & IMASK_DEFAULT)

#define IMASK_TX_DISABLED ((~(IMASK_TX_DEFAULT)) & IMASK_DEFAULT)

/* Fifo management */

#define FIFO_TX_THR_MASK	0x01ff

#define FIFO_TX_STARVE_MASK	0x01ff

#define FIFO_TX_STARVE_OFF_MASK	0x01ff

/* Attribute fields */

/* This enables rx snooping for buffers and descriptors */

#define ATTR_BDSTASH		0x00000800


#define ATTR_BUFSTASH		0x00004000


#define ATTR_SNOOPING		0x000000c0

#define ATTR_INIT_SETTINGS      ATTR_SNOOPING


#define ATTRELI_INIT_SETTINGS   0x0

#define ATTRELI_EL_MASK		0x3fff0000

#define ATTRELI_EL(x) (x << 16)

#define ATTRELI_EI_MASK		0x00003fff

#define ATTRELI_EI(x) (x)


#define BD_LFLAG(flags) ((flags) << 16)

#define BD_LENGTH_MASK		0x0000ffff


#define FPR_FILER_MASK	0xFFFFFFFF

#define MAX_FILER_IDX	0xFF

/* This default RIR value directly corresponds
 * to the 3-bit hash value generated */

#define DEFAULT_8RXQ_RIR0	0x05397700
/* Map even hash values to Q0, and odd ones to Q1 */

#define DEFAULT_2RXQ_RIR0	0x04104100

/* RQFCR register bits */

#define RQFCR_GPI		0x80000000

#define RQFCR_HASHTBL_Q		0x00000000

#define RQFCR_HASHTBL_0		0x00020000

#define RQFCR_HASHTBL_1		0x00040000

#define RQFCR_HASHTBL_2		0x00060000

#define RQFCR_HASHTBL_3		0x00080000

#define RQFCR_HASH		0x00010000

#define RQFCR_QUEUE		0x0000FC00

#define RQFCR_CLE		0x00000200

#define RQFCR_RJE		0x00000100

#define RQFCR_AND		0x00000080

#define RQFCR_CMP_EXACT		0x00000000

#define RQFCR_CMP_MATCH		0x00000020

#define RQFCR_CMP_NOEXACT	0x00000040

#define RQFCR_CMP_NOMATCH	0x00000060

/* RQFCR PID values */

#define	RQFCR_PID_MASK		0x00000000

#define	RQFCR_PID_PARSE		0x00000001

#define	RQFCR_PID_ARB		0x00000002

#define	RQFCR_PID_DAH		0x00000003

#define	RQFCR_PID_DAL		0x00000004

#define	RQFCR_PID_SAH		0x00000005

#define	RQFCR_PID_SAL		0x00000006

#define	RQFCR_PID_ETY		0x00000007

#define	RQFCR_PID_VID		0x00000008

#define	RQFCR_PID_PRI		0x00000009

#define	RQFCR_PID_TOS		0x0000000A

#define	RQFCR_PID_L4P		0x0000000B

#define	RQFCR_PID_DIA		0x0000000C

#define	RQFCR_PID_SIA		0x0000000D

#define	RQFCR_PID_DPT		0x0000000E

#define	RQFCR_PID_SPT		0x0000000F

/* RQFPR when PID is 0x0001 */

#define RQFPR_HDR_GE_512	0x00200000

#define RQFPR_LERR		0x00100000

#define RQFPR_RAR		0x00080000

#define RQFPR_RARQ		0x00040000

#define RQFPR_AR		0x00020000

#define RQFPR_ARQ		0x00010000

#define RQFPR_EBC		0x00008000

#define RQFPR_VLN		0x00004000

#define RQFPR_CFI		0x00002000

#define RQFPR_JUM		0x00001000

#define RQFPR_IPF		0x00000800

#define RQFPR_FIF		0x00000400

#define RQFPR_IPV4		0x00000200

#define RQFPR_IPV6		0x00000100

#define RQFPR_ICC		0x00000080

#define RQFPR_ICV		0x00000040

#define RQFPR_TCP		0x00000020

#define RQFPR_UDP		0x00000010

#define RQFPR_TUC		0x00000008

#define RQFPR_TUV		0x00000004

#define RQFPR_PER		0x00000002

#define RQFPR_EER		0x00000001

/* TxBD status field bits */

#define TXBD_READY		0x8000

#define TXBD_PADCRC		0x4000

#define TXBD_WRAP		0x2000

#define TXBD_INTERRUPT		0x1000

#define TXBD_LAST		0x0800

#define TXBD_CRC		0x0400

#define TXBD_DEF		0x0200

#define TXBD_HUGEFRAME		0x0080

#define TXBD_LATECOLLISION	0x0080

#define TXBD_RETRYLIMIT		0x0040

#define	TXBD_RETRYCOUNTMASK	0x003c

#define TXBD_UNDERRUN		0x0002

#define TXBD_TOE		0x0002

/* Tx FCB param bits */

#define TXFCB_VLN		0x80

#define TXFCB_IP		0x40

#define TXFCB_IP6		0x20

#define TXFCB_TUP		0x10

#define TXFCB_UDP		0x08

#define TXFCB_CIP		0x04

#define TXFCB_CTU		0x02

#define TXFCB_NPH		0x01

#define TXFCB_DEFAULT 		(TXFCB_IP|TXFCB_TUP|TXFCB_CTU|TXFCB_NPH)

/* RxBD status field bits */

#define RXBD_EMPTY		0x8000

#define RXBD_RO1		0x4000

#define RXBD_WRAP		0x2000

#define RXBD_INTERRUPT		0x1000

#define RXBD_LAST		0x0800

#define RXBD_FIRST		0x0400

#define RXBD_MISS		0x0100

#define RXBD_BROADCAST		0x0080

#define RXBD_MULTICAST		0x0040

#define RXBD_LARGE		0x0020

#define RXBD_NONOCTET		0x0010

#define RXBD_SHORT		0x0008

#define RXBD_CRCERR		0x0004

#define RXBD_OVERRUN		0x0002

#define RXBD_TRUNCATED		0x0001

#define RXBD_STATS		0x01ff

#define RXBD_ERR		(RXBD_LARGE | RXBD_SHORT | RXBD_NONOCTET        \
                                | RXBD_CRCERR | RXBD_OVERRUN                    \
                                | RXBD_TRUNCATED)

/* Rx FCB status field bits */

#define RXFCB_VLN		0x8000

#define RXFCB_IP		0x4000

#define RXFCB_IP6		0x2000

#define RXFCB_TUP		0x1000

#define RXFCB_CIP		0x0800

#define RXFCB_CTU		0x0400

#define RXFCB_EIP		0x0200

#define RXFCB_ETU		0x0100

#define RXFCB_CSUM_MASK		0x0f00

#define RXFCB_PERR_MASK		0x000c

#define RXFCB_PERR_BADL3	0x0008


#define GFAR_INT_NAME_MAX	(IFNAMSIZ + 6)	
/* '_g#_xx' */


#define GFAR_WOL_MAGIC		0x00000001

#define GFAR_WOL_FILER_UCAST	0x00000002


struct txbd8
{
	union {
		struct {
			
__be16	status;	/* Status Fields */
			
__be16	length;	/* Buffer length */
		};
		
__be32 lstatus;
	};
	
__be32	bufPtr;	/* Buffer Pointer */
};


struct txfcb {
	
u8	flags;
	
u8	ptp;    /* Flag to enable tx timestamping */
	
u8	l4os;	/* Level 4 Header Offset */
	
u8	l3os; 	/* Level 3 Header Offset */
	
__be16	phcs;	/* Pseudo-header Checksum */
	
__be16	vlctl;	/* VLAN control word */
};


struct rxbd8
{
	union {
		struct {
			
__be16	status;	/* Status Fields */
			
__be16	length;	/* Buffer Length */
		};
		
__be32 lstatus;
	};
	
__be32	bufPtr;	/* Buffer Pointer */
};


struct rxfcb {
	
__be16	flags;
	
u8	rq;	/* Receive Queue index */
	
u8	pro;	/* Layer 4 Protocol */
	
u16	reserved;
	
__be16	vlctl;	/* VLAN control word */
};


struct gianfar_skb_cb {
	
unsigned int bytes_sent; /* bytes-on-wire (i.e. no FCB) */
};


#define GFAR_CB(skb) ((struct gianfar_skb_cb *)((skb)->cb))


struct rmon_mib
{
	
u32	tr64;	/* 0x.680 - Transmit and Receive 64-byte Frame Counter */
	
u32	tr127;	/* 0x.684 - Transmit and Receive 65-127 byte Frame Counter */
	
u32	tr255;	/* 0x.688 - Transmit and Receive 128-255 byte Frame Counter */
	
u32	tr511;	/* 0x.68c - Transmit and Receive 256-511 byte Frame Counter */
	
u32	tr1k;	/* 0x.690 - Transmit and Receive 512-1023 byte Frame Counter */
	
u32	trmax;	/* 0x.694 - Transmit and Receive 1024-1518 byte Frame Counter */
	
u32	trmgv;	/* 0x.698 - Transmit and Receive 1519-1522 byte Good VLAN Frame */
	
u32	rbyt;	/* 0x.69c - Receive Byte Counter */
	
u32	rpkt;	/* 0x.6a0 - Receive Packet Counter */
	
u32	rfcs;	/* 0x.6a4 - Receive FCS Error Counter */
	
u32	rmca;	/* 0x.6a8 - Receive Multicast Packet Counter */
	
u32	rbca;	/* 0x.6ac - Receive Broadcast Packet Counter */
	
u32	rxcf;	/* 0x.6b0 - Receive Control Frame Packet Counter */
	
u32	rxpf;	/* 0x.6b4 - Receive Pause Frame Packet Counter */
	
u32	rxuo;	/* 0x.6b8 - Receive Unknown OP Code Counter */
	
u32	raln;	/* 0x.6bc - Receive Alignment Error Counter */
	
u32	rflr;	/* 0x.6c0 - Receive Frame Length Error Counter */
	
u32	rcde;	/* 0x.6c4 - Receive Code Error Counter */
	
u32	rcse;	/* 0x.6c8 - Receive Carrier Sense Error Counter */
	
u32	rund;	/* 0x.6cc - Receive Undersize Packet Counter */
	
u32	rovr;	/* 0x.6d0 - Receive Oversize Packet Counter */
	
u32	rfrg;	/* 0x.6d4 - Receive Fragments Counter */
	
u32	rjbr;	/* 0x.6d8 - Receive Jabber Counter */
	
u32	rdrp;	/* 0x.6dc - Receive Drop Counter */
	
u32	tbyt;	/* 0x.6e0 - Transmit Byte Counter Counter */
	
u32	tpkt;	/* 0x.6e4 - Transmit Packet Counter */
	
u32	tmca;	/* 0x.6e8 - Transmit Multicast Packet Counter */
	
u32	tbca;	/* 0x.6ec - Transmit Broadcast Packet Counter */
	
u32	txpf;	/* 0x.6f0 - Transmit Pause Control Frame Counter */
	
u32	tdfr;	/* 0x.6f4 - Transmit Deferral Packet Counter */
	
u32	tedf;	/* 0x.6f8 - Transmit Excessive Deferral Packet Counter */
	
u32	tscl;	/* 0x.6fc - Transmit Single Collision Packet Counter */
	
u32	tmcl;	/* 0x.700 - Transmit Multiple Collision Packet Counter */
	
u32	tlcl;	/* 0x.704 - Transmit Late Collision Packet Counter */
	
u32	txcl;	/* 0x.708 - Transmit Excessive Collision Packet Counter */
	
u32	tncl;	/* 0x.70c - Transmit Total Collision Counter */
	
u8	res1[4];
	
u32	tdrp;	/* 0x.714 - Transmit Drop Frame Counter */
	
u32	tjbr;	/* 0x.718 - Transmit Jabber Frame Counter */
	
u32	tfcs;	/* 0x.71c - Transmit FCS Error Counter */
	
u32	txcf;	/* 0x.720 - Transmit Control Frame Counter */
	
u32	tovr;	/* 0x.724 - Transmit Oversize Frame Counter */
	
u32	tund;	/* 0x.728 - Transmit Undersize Frame Counter */
	
u32	tfrg;	/* 0x.72c - Transmit Fragments Frame Counter */
	
u32	car1;	/* 0x.730 - Carry Register One */
	
u32	car2;	/* 0x.734 - Carry Register Two */
	
u32	cam1;	/* 0x.738 - Carry Mask Register One */
	
u32	cam2;	/* 0x.73c - Carry Mask Register Two */
};


struct gfar_extra_stats {
	
atomic64_t rx_alloc_err;
	
atomic64_t rx_large;
	
atomic64_t rx_short;
	
atomic64_t rx_nonoctet;
	
atomic64_t rx_crcerr;
	
atomic64_t rx_overrun;
	
atomic64_t rx_bsy;
	
atomic64_t rx_babr;
	
atomic64_t rx_trunc;
	
atomic64_t eberr;
	
atomic64_t tx_babt;
	
atomic64_t tx_underrun;
	
atomic64_t tx_timeout;
};


#define GFAR_RMON_LEN ((sizeof(struct rmon_mib) - 16)/sizeof(u32))

#define GFAR_EXTRA_STATS_LEN \
	(sizeof(struct gfar_extra_stats)/sizeof(atomic64_t))

/* Number of stats exported via ethtool */

#define GFAR_STATS_LEN (GFAR_RMON_LEN + GFAR_EXTRA_STATS_LEN)


struct gfar {
	
u32	tsec_id;	/* 0x.000 - Controller ID register */
	
u32	tsec_id2;	/* 0x.004 - Controller ID2 register */
	
u8	res1[8];
	
u32	ievent;		/* 0x.010 - Interrupt Event Register */
	
u32	imask;		/* 0x.014 - Interrupt Mask Register */
	
u32	edis;		/* 0x.018 - Error Disabled Register */
	
u32	emapg;		/* 0x.01c - Group Error mapping register */
	
u32	ecntrl;		/* 0x.020 - Ethernet Control Register */
	
u32	minflr;		/* 0x.024 - Minimum Frame Length Register */
	
u32	ptv;		/* 0x.028 - Pause Time Value Register */
	
u32	dmactrl;	/* 0x.02c - DMA Control Register */
	
u32	tbipa;		/* 0x.030 - TBI PHY Address Register */
	
u8	res2[28];
	
u32	fifo_rx_pause;	/* 0x.050 - FIFO receive pause start threshold
                                        register */
	
u32	fifo_rx_pause_shutoff;	/* x.054 - FIFO receive starve shutoff
                                                register */
	
u32	fifo_rx_alarm;	/* 0x.058 - FIFO receive alarm start threshold
                                                register */
	
u32	fifo_rx_alarm_shutoff;	/*0x.05c - FIFO receive alarm  starve
                                                shutoff register */
	
u8	res3[44];
	
u32	fifo_tx_thr;	/* 0x.08c - FIFO transmit threshold register */
	
u8	res4[8];
	
u32	fifo_tx_starve;	/* 0x.098 - FIFO transmit starve register */
	
u32	fifo_tx_starve_shutoff;	/* 0x.09c - FIFO transmit starve shutoff register */
	
u8	res5[96];
	
u32	tctrl;		/* 0x.100 - Transmit Control Register */
	
u32	tstat;		/* 0x.104 - Transmit Status Register */
	
u32	dfvlan;		/* 0x.108 - Default VLAN Control word */
	
u32	tbdlen;		/* 0x.10c - Transmit Buffer Descriptor Data Length Register */
	
u32	txic;		/* 0x.110 - Transmit Interrupt Coalescing Configuration Register */
	
u32	tqueue;		/* 0x.114 - Transmit queue control register */
	
u8	res7[40];
	
u32	tr03wt;		/* 0x.140 - TxBD Rings 0-3 round-robin weightings */
	
u32	tr47wt;		/* 0x.144 - TxBD Rings 4-7 round-robin weightings */
	
u8	res8[52];
	
u32	tbdbph;		/* 0x.17c - Tx data buffer pointer high */
	
u8	res9a[4];
	
u32	tbptr0;		/* 0x.184 - TxBD Pointer for ring 0 */
	
u8	res9b[4];
	
u32	tbptr1;		/* 0x.18c - TxBD Pointer for ring 1 */
	
u8	res9c[4];
	
u32	tbptr2;		/* 0x.194 - TxBD Pointer for ring 2 */
	
u8	res9d[4];
	
u32	tbptr3;		/* 0x.19c - TxBD Pointer for ring 3 */
	
u8	res9e[4];
	
u32	tbptr4;		/* 0x.1a4 - TxBD Pointer for ring 4 */
	
u8	res9f[4];
	
u32	tbptr5;		/* 0x.1ac - TxBD Pointer for ring 5 */
	
u8	res9g[4];
	
u32	tbptr6;		/* 0x.1b4 - TxBD Pointer for ring 6 */
	
u8	res9h[4];
	
u32	tbptr7;		/* 0x.1bc - TxBD Pointer for ring 7 */
	
u8	res9[64];
	
u32	tbaseh;		/* 0x.200 - TxBD base address high */
	
u32	tbase0;		/* 0x.204 - TxBD Base Address of ring 0 */
	
u8	res10a[4];
	
u32	tbase1;		/* 0x.20c - TxBD Base Address of ring 1 */
	
u8	res10b[4];
	
u32	tbase2;		/* 0x.214 - TxBD Base Address of ring 2 */
	
u8	res10c[4];
	
u32	tbase3;		/* 0x.21c - TxBD Base Address of ring 3 */
	
u8	res10d[4];
	
u32	tbase4;		/* 0x.224 - TxBD Base Address of ring 4 */
	
u8	res10e[4];
	
u32	tbase5;		/* 0x.22c - TxBD Base Address of ring 5 */
	
u8	res10f[4];
	
u32	tbase6;		/* 0x.234 - TxBD Base Address of ring 6 */
	
u8	res10g[4];
	
u32	tbase7;		/* 0x.23c - TxBD Base Address of ring 7 */
	
u8	res10[192];
	
u32	rctrl;		/* 0x.300 - Receive Control Register */
	
u32	rstat;		/* 0x.304 - Receive Status Register */
	
u8	res12[8];
	
u32	rxic;		/* 0x.310 - Receive Interrupt Coalescing Configuration Register */
	
u32	rqueue;		/* 0x.314 - Receive queue control register */
	
u32	rir0;		/* 0x.318 - Ring mapping register 0 */
	
u32	rir1;		/* 0x.31c - Ring mapping register 1 */
	
u32	rir2;		/* 0x.320 - Ring mapping register 2 */
	
u32	rir3;		/* 0x.324 - Ring mapping register 3 */
	
u8	res13[8];
	
u32	rbifx;		/* 0x.330 - Receive bit field extract control register */
	
u32	rqfar;		/* 0x.334 - Receive queue filing table address register */
	
u32	rqfcr;		/* 0x.338 - Receive queue filing table control register */
	
u32	rqfpr;		/* 0x.33c - Receive queue filing table property register */
	
u32	mrblr;		/* 0x.340 - Maximum Receive Buffer Length Register */
	
u8	res14[56];
	
u32	rbdbph;		/* 0x.37c - Rx data buffer pointer high */
	
u8	res15a[4];
	
u32	rbptr0;		/* 0x.384 - RxBD pointer for ring 0 */
	
u8	res15b[4];
	
u32	rbptr1;		/* 0x.38c - RxBD pointer for ring 1 */
	
u8	res15c[4];
	
u32	rbptr2;		/* 0x.394 - RxBD pointer for ring 2 */
	
u8	res15d[4];
	
u32	rbptr3;		/* 0x.39c - RxBD pointer for ring 3 */
	
u8	res15e[4];
	
u32	rbptr4;		/* 0x.3a4 - RxBD pointer for ring 4 */
	
u8	res15f[4];
	
u32	rbptr5;		/* 0x.3ac - RxBD pointer for ring 5 */
	
u8	res15g[4];
	
u32	rbptr6;		/* 0x.3b4 - RxBD pointer for ring 6 */
	
u8	res15h[4];
	
u32	rbptr7;		/* 0x.3bc - RxBD pointer for ring 7 */
	
u8	res16[64];
	
u32	rbaseh;		/* 0x.400 - RxBD base address high */
	
u32	rbase0;		/* 0x.404 - RxBD base address of ring 0 */
	
u8	res17a[4];
	
u32	rbase1;		/* 0x.40c - RxBD base address of ring 1 */
	
u8	res17b[4];
	
u32	rbase2;		/* 0x.414 - RxBD base address of ring 2 */
	
u8	res17c[4];
	
u32	rbase3;		/* 0x.41c - RxBD base address of ring 3 */
	
u8	res17d[4];
	
u32	rbase4;		/* 0x.424 - RxBD base address of ring 4 */
	
u8	res17e[4];
	
u32	rbase5;		/* 0x.42c - RxBD base address of ring 5 */
	
u8	res17f[4];
	
u32	rbase6;		/* 0x.434 - RxBD base address of ring 6 */
	
u8	res17g[4];
	
u32	rbase7;		/* 0x.43c - RxBD base address of ring 7 */
	
u8	res17[192];
	
u32	maccfg1;	/* 0x.500 - MAC Configuration 1 Register */
	
u32	maccfg2;	/* 0x.504 - MAC Configuration 2 Register */
	
u32	ipgifg;		/* 0x.508 - Inter Packet Gap/Inter Frame Gap Register */
	
u32	hafdup;		/* 0x.50c - Half Duplex Register */
	
u32	maxfrm;		/* 0x.510 - Maximum Frame Length Register */
	
u8	res18[12];
	
u8	gfar_mii_regs[24];	/* See gianfar_phy.h */
	
u32	ifctrl;		/* 0x.538 - Interface control register */
	
u32	ifstat;		/* 0x.53c - Interface Status Register */
	
u32	macstnaddr1;	/* 0x.540 - Station Address Part 1 Register */
	
u32	macstnaddr2;	/* 0x.544 - Station Address Part 2 Register */
	
u32	mac01addr1;	/* 0x.548 - MAC exact match address 1, part 1 */
	
u32	mac01addr2;	/* 0x.54c - MAC exact match address 1, part 2 */
	
u32	mac02addr1;	/* 0x.550 - MAC exact match address 2, part 1 */
	
u32	mac02addr2;	/* 0x.554 - MAC exact match address 2, part 2 */
	
u32	mac03addr1;	/* 0x.558 - MAC exact match address 3, part 1 */
	
u32	mac03addr2;	/* 0x.55c - MAC exact match address 3, part 2 */
	
u32	mac04addr1;	/* 0x.560 - MAC exact match address 4, part 1 */
	
u32	mac04addr2;	/* 0x.564 - MAC exact match address 4, part 2 */
	
u32	mac05addr1;	/* 0x.568 - MAC exact match address 5, part 1 */
	
u32	mac05addr2;	/* 0x.56c - MAC exact match address 5, part 2 */
	
u32	mac06addr1;	/* 0x.570 - MAC exact match address 6, part 1 */
	
u32	mac06addr2;	/* 0x.574 - MAC exact match address 6, part 2 */
	
u32	mac07addr1;	/* 0x.578 - MAC exact match address 7, part 1 */
	
u32	mac07addr2;	/* 0x.57c - MAC exact match address 7, part 2 */
	
u32	mac08addr1;	/* 0x.580 - MAC exact match address 8, part 1 */
	
u32	mac08addr2;	/* 0x.584 - MAC exact match address 8, part 2 */
	
u32	mac09addr1;	/* 0x.588 - MAC exact match address 9, part 1 */
	
u32	mac09addr2;	/* 0x.58c - MAC exact match address 9, part 2 */
	
u32	mac10addr1;	/* 0x.590 - MAC exact match address 10, part 1*/
	
u32	mac10addr2;	/* 0x.594 - MAC exact match address 10, part 2*/
	
u32	mac11addr1;	/* 0x.598 - MAC exact match address 11, part 1*/
	
u32	mac11addr2;	/* 0x.59c - MAC exact match address 11, part 2*/
	
u32	mac12addr1;	/* 0x.5a0 - MAC exact match address 12, part 1*/
	
u32	mac12addr2;	/* 0x.5a4 - MAC exact match address 12, part 2*/
	
u32	mac13addr1;	/* 0x.5a8 - MAC exact match address 13, part 1*/
	
u32	mac13addr2;	/* 0x.5ac - MAC exact match address 13, part 2*/
	
u32	mac14addr1;	/* 0x.5b0 - MAC exact match address 14, part 1*/
	
u32	mac14addr2;	/* 0x.5b4 - MAC exact match address 14, part 2*/
	
u32	mac15addr1;	/* 0x.5b8 - MAC exact match address 15, part 1*/
	
u32	mac15addr2;	/* 0x.5bc - MAC exact match address 15, part 2*/
	
u8	res20[192];
	
struct rmon_mib	rmon;	/* 0x.680-0x.73c */
	
u32	rrej;		/* 0x.740 - Receive filer rejected packet counter */
	
u8	res21[188];
	
u32	igaddr0;	/* 0x.800 - Indivdual/Group address register 0*/
	
u32	igaddr1;	/* 0x.804 - Indivdual/Group address register 1*/
	
u32	igaddr2;	/* 0x.808 - Indivdual/Group address register 2*/
	
u32	igaddr3;	/* 0x.80c - Indivdual/Group address register 3*/
	
u32	igaddr4;	/* 0x.810 - Indivdual/Group address register 4*/
	
u32	igaddr5;	/* 0x.814 - Indivdual/Group address register 5*/
	
u32	igaddr6;	/* 0x.818 - Indivdual/Group address register 6*/
	
u32	igaddr7;	/* 0x.81c - Indivdual/Group address register 7*/
	
u8	res22[96];
	
u32	gaddr0;		/* 0x.880 - Group address register 0 */
	
u32	gaddr1;		/* 0x.884 - Group address register 1 */
	
u32	gaddr2;		/* 0x.888 - Group address register 2 */
	
u32	gaddr3;		/* 0x.88c - Group address register 3 */
	
u32	gaddr4;		/* 0x.890 - Group address register 4 */
	
u32	gaddr5;		/* 0x.894 - Group address register 5 */
	
u32	gaddr6;		/* 0x.898 - Group address register 6 */
	
u32	gaddr7;		/* 0x.89c - Group address register 7 */
	
u8	res23a[352];
	
u32	fifocfg;	/* 0x.a00 - FIFO interface config register */
	
u8	res23b[252];
	
u8	res23c[248];
	
u32	attr;		/* 0x.bf8 - Attributes Register */
	
u32	attreli;	/* 0x.bfc - Attributes Extract Length and Extract Index Register */
	
u32	rqprm0;	/* 0x.c00 - Receive queue parameters register 0 */
	
u32	rqprm1;	/* 0x.c04 - Receive queue parameters register 1 */
	
u32	rqprm2;	/* 0x.c08 - Receive queue parameters register 2 */
	
u32	rqprm3;	/* 0x.c0c - Receive queue parameters register 3 */
	
u32	rqprm4;	/* 0x.c10 - Receive queue parameters register 4 */
	
u32	rqprm5;	/* 0x.c14 - Receive queue parameters register 5 */
	
u32	rqprm6;	/* 0x.c18 - Receive queue parameters register 6 */
	
u32	rqprm7;	/* 0x.c1c - Receive queue parameters register 7 */
	
u8	res24[36];
	
u32	rfbptr0; /* 0x.c44 - Last free RxBD pointer for ring 0 */
	
u8	res24a[4];
	
u32	rfbptr1; /* 0x.c4c - Last free RxBD pointer for ring 1 */
	
u8	res24b[4];
	
u32	rfbptr2; /* 0x.c54 - Last free RxBD pointer for ring 2 */
	
u8	res24c[4];
	
u32	rfbptr3; /* 0x.c5c - Last free RxBD pointer for ring 3 */
	
u8	res24d[4];
	
u32	rfbptr4; /* 0x.c64 - Last free RxBD pointer for ring 4 */
	
u8	res24e[4];
	
u32	rfbptr5; /* 0x.c6c - Last free RxBD pointer for ring 5 */
	
u8	res24f[4];
	
u32	rfbptr6; /* 0x.c74 - Last free RxBD pointer for ring 6 */
	
u8	res24g[4];
	
u32	rfbptr7; /* 0x.c7c - Last free RxBD pointer for ring 7 */
	
u8	res24h[4];
	
u8	res24x[556];
	
u32	isrg0;		/* 0x.eb0 - Interrupt steering group 0 register */
	
u32	isrg1;		/* 0x.eb4 - Interrupt steering group 1 register */
	
u32	isrg2;		/* 0x.eb8 - Interrupt steering group 2 register */
	
u32	isrg3;		/* 0x.ebc - Interrupt steering group 3 register */
	
u8	res25[16];
	
u32	rxic0;		/* 0x.ed0 - Ring 0 Rx interrupt coalescing */
	
u32	rxic1;		/* 0x.ed4 - Ring 1 Rx interrupt coalescing */
	
u32	rxic2;		/* 0x.ed8 - Ring 2 Rx interrupt coalescing */
	
u32	rxic3;		/* 0x.edc - Ring 3 Rx interrupt coalescing */
	
u32	rxic4;		/* 0x.ee0 - Ring 4 Rx interrupt coalescing */
	
u32	rxic5;		/* 0x.ee4 - Ring 5 Rx interrupt coalescing */
	
u32	rxic6;		/* 0x.ee8 - Ring 6 Rx interrupt coalescing */
	
u32	rxic7;		/* 0x.eec - Ring 7 Rx interrupt coalescing */
	
u8	res26[32];
	
u32	txic0;		/* 0x.f10 - Ring 0 Tx interrupt coalescing */
	
u32	txic1;		/* 0x.f14 - Ring 1 Tx interrupt coalescing */
	
u32	txic2;		/* 0x.f18 - Ring 2 Tx interrupt coalescing */
	
u32	txic3;		/* 0x.f1c - Ring 3 Tx interrupt coalescing */
	
u32	txic4;		/* 0x.f20 - Ring 4 Tx interrupt coalescing */
	
u32	txic5;		/* 0x.f24 - Ring 5 Tx interrupt coalescing */
	
u32	txic6;		/* 0x.f28 - Ring 6 Tx interrupt coalescing */
	
u32	txic7;		/* 0x.f2c - Ring 7 Tx interrupt coalescing */
	
u8	res27[208];
};

/* Flags related to gianfar device features */

#define FSL_GIANFAR_DEV_HAS_GIGABIT		0x00000001

#define FSL_GIANFAR_DEV_HAS_COALESCE		0x00000002

#define FSL_GIANFAR_DEV_HAS_RMON		0x00000004

#define FSL_GIANFAR_DEV_HAS_MULTI_INTR		0x00000008

#define FSL_GIANFAR_DEV_HAS_CSUM		0x00000010

#define FSL_GIANFAR_DEV_HAS_VLAN		0x00000020

#define FSL_GIANFAR_DEV_HAS_EXTENDED_HASH	0x00000040

#define FSL_GIANFAR_DEV_HAS_MAGIC_PACKET	0x00000100

#define FSL_GIANFAR_DEV_HAS_BD_STASHING		0x00000200

#define FSL_GIANFAR_DEV_HAS_BUF_STASHING	0x00000400

#define FSL_GIANFAR_DEV_HAS_TIMER		0x00000800

#define FSL_GIANFAR_DEV_HAS_WAKE_ON_FILER	0x00001000

#define FSL_GIANFAR_DEV_HAS_RX_FILER		0x00002000

#if (MAXGROUPS == 2)

#define DEFAULT_MAPPING 	0xAA
#else

#define DEFAULT_MAPPING 	0xFF
#endif


#define ISRG_RR0	0x80000000

#define ISRG_TR0	0x00800000

/* The same driver can operate in two modes */
/* SQ_SG_MODE: Single Queue Single Group Mode
 *              (Backward compatible mode)
 * MQ_MG_MODE: Multi Queue Multi Group mode
 */
enum {
	
SQ_SG_MODE = 0,
	
MQ_MG_MODE
};

/* GFAR_SQ_POLLING: Single Queue NAPI polling mode
 *      The driver supports a single pair of RX/Tx queues
 *      per interrupt group (Rx/Tx int line). MQ_MG mode
 *      devices have 2 interrupt groups, so the device will
 *      have a total of 2 Tx and 2 Rx queues in this case.
 * GFAR_MQ_POLLING: Multi Queue NAPI polling mode
 *      The driver supports all the 8 Rx and Tx HW queues
 *      each queue mapped by the Device Tree to one of
 *      the 2 interrupt groups. This mode implies significant
 *      processing overhead (CPU and controller level).
 */

enum gfar_poll_mode {
	
GFAR_SQ_POLLING = 0,
	
GFAR_MQ_POLLING
};

/*
 * Per TX queue stats
 */

struct tx_q_stats {
	
unsigned long tx_packets;
	
unsigned long tx_bytes;
};

/**
 *      struct gfar_priv_tx_q - per tx queue structure
 *      @txlock: per queue tx spin lock
 *      @tx_skbuff:skb pointers
 *      @skb_curtx: to be used skb pointer
 *      @skb_dirtytx:the last used skb pointer
 *      @stats: bytes/packets stats
 *      @qindex: index of this queue
 *      @dev: back pointer to the dev structure
 *      @grp: back pointer to the group to which this queue belongs
 *      @tx_bd_base: First tx buffer descriptor
 *      @cur_tx: Next free ring entry
 *      @dirty_tx: First buffer in line to be transmitted
 *      @tx_ring_size: Tx ring size
 *      @num_txbdfree: number of free TxBds
 *      @txcoalescing: enable/disable tx coalescing
 *      @txic: transmit interrupt coalescing value
 *      @txcount: coalescing value if based on tx frame count
 *      @txtime: coalescing value if based on time
 */

struct gfar_priv_tx_q {
	/* cacheline 1 */
	
spinlock_t txlock __attribute__ ((aligned (SMP_CACHE_BYTES)));
	
struct	txbd8 *tx_bd_base;
	
struct	txbd8 *cur_tx;
	
unsigned int num_txbdfree;
	
unsigned short skb_curtx;
	
unsigned short tx_ring_size;
	
struct tx_q_stats stats;
	
struct gfar_priv_grp *grp;
	/* cacheline 2 */
	
struct net_device *dev;
	
struct sk_buff **tx_skbuff;
	
struct	txbd8 *dirty_tx;
	
unsigned short skb_dirtytx;
	
unsigned short qindex;
	/* Configuration info for the coalescing features */
	
unsigned int txcoalescing;
	
unsigned long txic;
	
dma_addr_t tx_bd_dma_base;
};

/*
 * Per RX queue stats
 */

struct rx_q_stats {
	
unsigned long rx_packets;
	
unsigned long rx_bytes;
	
unsigned long rx_dropped;
};


struct gfar_rx_buff {
	
dma_addr_t dma;
	
struct page *page;
	
unsigned int page_offset;
};

/**
 *      struct gfar_priv_rx_q - per rx queue structure
 *      @rx_buff: Array of buffer info metadata structs
 *      @rx_bd_base: First rx buffer descriptor
 *      @next_to_use: index of the next buffer to be alloc'd
 *      @next_to_clean: index of the next buffer to be cleaned
 *      @qindex: index of this queue
 *      @ndev: back pointer to net_device
 *      @rx_ring_size: Rx ring size
 *      @rxcoalescing: enable/disable rx-coalescing
 *      @rxic: receive interrupt coalescing vlaue
 */


struct gfar_priv_rx_q {
	struct	gfar_rx_buff *rx_buff __aligned(SMP_CACHE_BYTES);
	
struct	rxbd8 *rx_bd_base;
	
struct	net_device *ndev;
	
struct	device *dev;
	
u16 rx_ring_size;
	
u16 qindex;
	
struct	gfar_priv_grp *grp;
	
u16 next_to_clean;
	
u16 next_to_use;
	
u16 next_to_alloc;
	
struct	sk_buff *skb;
	
struct rx_q_stats stats;
	
u32 __iomem *rfbptr;
	
unsigned char rxcoalescing;
	
unsigned long rxic;
	
dma_addr_t rx_bd_dma_base;
};


enum gfar_irqinfo_id {
	
GFAR_TX = 0,
	
GFAR_RX = 1,
	
GFAR_ER = 2,
	
GFAR_NUM_IRQS = 3
};


struct gfar_irqinfo {
	
unsigned int irq;
	
char name[GFAR_INT_NAME_MAX];
};

/**
 *      struct gfar_priv_grp - per group structure
 *      @napi: the napi poll function
 *      @priv: back pointer to the priv structure
 *      @regs: the ioremapped register space for this group
 *      @irqinfo: TX/RX/ER irq data for this group
 */


struct gfar_priv_grp {
	spinlock_t grplock __aligned(SMP_CACHE_BYTES);
	
struct	napi_struct napi_rx;
	
struct	napi_struct napi_tx;
	
struct gfar __iomem *regs;
	
struct gfar_priv_tx_q *tx_queue;
	
struct gfar_priv_rx_q *rx_queue;
	
unsigned int tstat;
	
unsigned int rstat;

	
struct gfar_private *priv;
	
unsigned long num_tx_queues;
	
unsigned long tx_bit_map;
	
unsigned long num_rx_queues;
	
unsigned long rx_bit_map;

	
struct gfar_irqinfo *irqinfo[GFAR_NUM_IRQS];
};


#define gfar_irq(grp, ID) \
	((grp)->irqinfo[GFAR_##ID])


enum gfar_errata {
	
GFAR_ERRATA_74		= 0x01,
	
GFAR_ERRATA_76		= 0x02,
	
GFAR_ERRATA_A002	= 0x04,
	
GFAR_ERRATA_12		= 0x08, /* a.k.a errata eTSEC49 */
};


enum gfar_dev_state {
	
GFAR_DOWN = 1,
	
GFAR_RESETTING
};

/* Struct stolen almost completely (and shamelessly) from the FCC enet source
 * (Ok, that's not so true anymore, but there is a family resemblance)
 * The GFAR buffer descriptors track the ring buffers.  The rx_bd_base
 * and tx_bd_base always point to the currently available buffer.
 * The dirty_tx tracks the current buffer that is being sent by the
 * controller.  The cur_tx and dirty_tx are equal under both completely
 * empty and completely full conditions.  The empty/ready indicator in
 * the buffer descriptor determines the actual condition.
 */

struct gfar_private {
	
struct device *dev;
	
struct net_device *ndev;
	
enum gfar_errata errata;

	
u16 uses_rxfcb;
	
u16 padding;
	
u32 device_flags;

	/* HW time stamping enabled flag */
	
int hwts_rx_en;
	
int hwts_tx_en;

	
struct gfar_priv_tx_q *tx_queue[MAX_TX_QS];
	
struct gfar_priv_rx_q *rx_queue[MAX_RX_QS];
	
struct gfar_priv_grp gfargrp[MAXGROUPS];

	
unsigned long state;

	
unsigned short mode;
	
unsigned short poll_mode;
	
unsigned int num_tx_queues;
	
unsigned int num_rx_queues;
	
unsigned int num_grps;
	
int tx_actual_en;

	/* Network Statistics */
	
struct gfar_extra_stats extra_stats;

	/* PHY stuff */
	
phy_interface_t interface;
	
struct device_node *phy_node;
	
struct device_node *tbi_node;
	
struct mii_bus *mii_bus;
	
int oldspeed;
	
int oldduplex;
	
int oldlink;

	
uint32_t msg_enable;

	
struct work_struct reset_task;

	
struct platform_device *ofdev;
	unsigned char
		
extended_hash:1,
		
bd_stash_en:1,
		
rx_filer_enable:1,
		/* Enable priorty based Tx scheduling in Hw */
		
prio_sched_en:1,
		/* Flow control flags */
		
pause_aneg_en:1,
		
tx_pause_en:1,
		
rx_pause_en:1;

	/* The total tx and rx ring size for the enabled queues */
	
unsigned int total_tx_ring_size;
	
unsigned int total_rx_ring_size;

	
u32 rqueue;
	
u32 tqueue;

	/* RX per device parameters */
	
unsigned int rx_stash_size;
	
unsigned int rx_stash_index;

	
u32 cur_filer_idx;

	/* RX queue filer rule set*/
	
struct ethtool_rx_list rx_list;
	
struct mutex rx_queue_access;

	/* Hash registers and their width */
	
u32 __iomem *hash_regs[16];
	
int hash_width;

	/* wake-on-lan settings */
	
u16 wol_opts;
	
u16 wol_supported;

	/*Filer table*/
	
unsigned int ftp_rqfpr[MAX_FILER_IDX + 1];
	
unsigned int ftp_rqfcr[MAX_FILER_IDX + 1];
};





static inline int gfar_has_errata(struct gfar_private *priv,
				  enum gfar_errata err)
{
	return priv->errata & err;
}


Contributors
PersonTokensPropCommitsCommitProp
Anton Vorontsov23100.00%1100.00%


Total23100.00%1100.00%






static inline u32 gfar_read(unsigned __iomem *addr)
{
	u32 val;
	val = ioread32be(addr);
	return val;
}


Contributors
PersonTokensPropCommitsCommitProp
Kumar Gala2392.00%250.00%


Adrian Bunk14.00%125.00%


Kim Phillips14.00%125.00%


Total25100.00%4100.00%






static inline void gfar_write(unsigned __iomem *addr, u32 val)
{
	iowrite32be(val, addr);
}


Contributors
PersonTokensPropCommitsCommitProp
Kumar Gala1881.82%250.00%


Kim Phillips313.64%125.00%


Adrian Bunk14.55%125.00%


Total22100.00%4100.00%






static inline void gfar_write_filer(struct gfar_private *priv,
		unsigned int far, unsigned int fcr, unsigned int fpr)
{
	struct gfar __iomem *regs = priv->gfargrp[0].regs;

	gfar_write(&regs->rqfar, far);
	gfar_write(&regs->rqfcr, fcr);
	gfar_write(&regs->rqfpr, fpr);
}


Contributors
PersonTokensPropCommitsCommitProp
Sandeep Gopalpet69100.00%1100.00%


Total69100.00%1100.00%






static inline void gfar_read_filer(struct gfar_private *priv,
		unsigned int far, unsigned int *fcr, unsigned int *fpr)
{
	struct gfar __iomem *regs = priv->gfargrp[0].regs;

	gfar_write(&regs->rqfar, far);
	*fcr = gfar_read(&regs->rqfcr);
	*fpr = gfar_read(&regs->rqfpr);
}


Contributors
PersonTokensPropCommitsCommitProp
Sebastian Poehn73100.00%1100.00%


Total73100.00%1100.00%






static inline void gfar_write_isrg(struct gfar_private *priv)
{
	struct gfar __iomem *regs = priv->gfargrp[0].regs;
	u32 __iomem *baddr = &regs->isrg0;
	u32 isrg = 0;
	int grp_idx, i;

	for (grp_idx = 0; grp_idx < priv->num_grps; grp_idx++) {
		struct gfar_priv_grp *grp = &priv->gfargrp[grp_idx];

		for_each_set_bit(i, &grp->rx_bit_map, priv->num_rx_queues) {
			isrg |= (ISRG_RR0 >> i);
		}

		for_each_set_bit(i, &grp->tx_bit_map, priv->num_tx_queues) {
			isrg |= (ISRG_TR0 >> i);
		}

		gfar_write(baddr, isrg);

		baddr++;
		isrg = 0;
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Claudiu Manoil127100.00%1100.00%


Total127100.00%1100.00%






static inline int gfar_is_dma_stopped(struct gfar_private *priv)
{
	struct gfar __iomem *regs = priv->gfargrp[0].regs;

	return ((gfar_read(&regs->ievent) & (IEVENT_GRSC | IEVENT_GTSC)) ==
	       (IEVENT_GRSC | IEVENT_GTSC));
}


Contributors
PersonTokensPropCommitsCommitProp
Claudiu Manoil52100.00%1100.00%


Total52100.00%1100.00%






static inline int gfar_is_rx_dma_stopped(struct gfar_private *priv)
{
	struct gfar __iomem *regs = priv->gfargrp[0].regs;

	return gfar_read(&regs->ievent) & IEVENT_GRSC;
}


Contributors
PersonTokensPropCommitsCommitProp
Claudiu Manoil38100.00%1100.00%


Total38100.00%1100.00%






static inline void gfar_wmb(void)
{
#if defined(CONFIG_PPC)
	/* The powerpc-specific eieio() is used, as wmb() has too strong
         * semantics (it requires synchronization between cacheable and
         * uncacheable mappings, which eieio() doesn't provide and which we
         * don't need), thus requiring a more expensive sync instruction.  At
         * some point, the set of architecture-independent barrier functions
         * should be expanded to include weaker barriers.
         */
	eieio();
#else
	wmb(); /* order write acesses for BD (or FCB) fields */
#endif
}


Contributors
PersonTokensPropCommitsCommitProp
Claudiu Manoil27100.00%1100.00%


Total27100.00%1100.00%






static inline void gfar_clear_txbd_status(struct txbd8 *bdp)
{
	u32 lstatus = be32_to_cpu(bdp->lstatus);

	lstatus &= BD_LFLAG(TXBD_WRAP);
	bdp->lstatus = cpu_to_be32(lstatus);
}


Contributors
PersonTokensPropCommitsCommitProp
Claudiu Manoil38100.00%1100.00%


Total38100.00%1100.00%






static inline int gfar_rxbd_unused(struct gfar_priv_rx_q *rxq)
{
	if (rxq->next_to_clean > rxq->next_to_use)
		return rxq->next_to_clean - rxq->next_to_use - 1;

	return rxq->rx_ring_size + rxq->next_to_clean - rxq->next_to_use - 1;
}


Contributors
PersonTokensPropCommitsCommitProp
Claudiu Manoil48100.00%1100.00%


Total48100.00%1100.00%






static inline u32 gfar_rxbd_dma_lastfree(struct gfar_priv_rx_q *rxq)
{
	struct rxbd8 *bdp;
	u32 bdp_dma;
	int i;

	i = rxq->next_to_use ? rxq->next_to_use - 1 : rxq->rx_ring_size - 1;
	bdp = &rxq->rx_bd_base[i];
	bdp_dma = lower_32_bits(rxq->rx_bd_dma_base);
	bdp_dma += (uintptr_t)bdp - (uintptr_t)rxq->rx_bd_base;

	return bdp_dma;
}


Contributors
PersonTokensPropCommitsCommitProp
Claudiu Manoil3950.65%150.00%


Scott Wood3849.35%150.00%


Total77100.00%2100.00%



irqreturn_t gfar_receive(int irq, void *dev_id);
int startup_gfar(struct net_device *dev);
void stop_gfar(struct net_device *dev);
void reset_gfar(struct net_device *dev);
void gfar_mac_reset(struct gfar_private *priv);
void gfar_halt(struct gfar_private *priv);
void gfar_start(struct gfar_private *priv);
void gfar_phy_test(struct mii_bus *bus, struct phy_device *phydev, int enable,
		   u32 regnum, u32 read);
void gfar_configure_coalescing_all(struct gfar_private *priv);
int gfar_set_features(struct net_device *dev, netdev_features_t features);

extern const struct ethtool_ops gfar_ethtool_ops;


#define MAX_FILER_CACHE_IDX (2*(MAX_FILER_IDX))


#define RQFCR_PID_PRI_MASK 0xFFFFFFF8

#define RQFCR_PID_L4P_MASK 0xFFFFFF00

#define RQFCR_PID_VID_MASK 0xFFFFF000

#define RQFCR_PID_PORT_MASK 0xFFFF0000

#define RQFCR_PID_MAC_MASK 0xFF000000


struct gfar_mask_entry {
	
unsigned int mask; /* The mask value which is valid form start to end */
	
unsigned int start;
	
unsigned int end;
	
unsigned int block; /* Same block values indicate depended entries */
};

/* Represents a receive filer table entry */

struct gfar_filer_entry {
	
u32 ctrl;
	
u32 prop;
};


/* The 20 additional entries are a shadow for one extra element */

struct filer_table {
	
u32 index;
	
struct gfar_filer_entry fe[MAX_FILER_CACHE_IDX + 20];
};

/* The gianfar_ptp module will set this variable */
extern int gfar_phc_index;

#endif /* __GIANFAR_H */

Overall Contributors
PersonTokensPropCommitsCommitProp
Kumar Gala196442.92%55.43%


Sandeep Gopalpet86118.82%99.78%


Claudiu Manoil82117.94%2426.09%


Andy Fleming2896.32%1111.96%


Sebastian Poehn1924.20%22.17%


Matei Pavaluca1403.06%22.17%


Dai Haruki801.75%88.70%


Scott Wood521.14%22.17%


Anton Vorontsov481.05%44.35%


Eric Dumazet190.42%11.09%


Manfred Rudigier170.37%33.26%


Paul Gortmaker150.33%22.17%


Ben Menchaca140.31%11.09%


Michał Mirosław120.26%22.17%


Kapil Juneja100.22%11.09%


Alex Dubov70.15%11.09%


Richard Cochran50.11%11.09%


Grant C. Likely40.09%11.09%


Kim Phillips40.09%11.09%


Hamish Martin40.09%11.09%


Stephen Hemminger30.07%11.09%


Jiajun Wu30.07%11.09%


Joe Perches20.04%11.09%


Adrian Bunk20.04%11.09%


Zefir Kurtisi20.04%11.09%


Sebastian Andrzej Siewior20.04%11.09%


Sebastian Pöhn10.02%11.09%


Xiaotian Feng10.02%11.09%


Linus Torvalds10.02%11.09%


Lucas De Marchi10.02%11.09%


Total4576100.00%92100.00%


Directory: drivers/net/ethernet/freescale



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