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linuxdebug/drivers/net/ethernet/freescale/gianfar.h

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null pointer error
2024-07-16 15:50:57 +02:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* 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.
*
* 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;
};
/* 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 DRV_NAME "gfar-enet"
/* 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 FBTHR_SHIFT 24
#define DEFAULT_RX_LFC_THR 16
#define DEFAULT_LFC_PTVVAL 4
#define GFAR_RXB_TRUESIZE 2048
#define GFAR_SKBFRAG_OVR (RXBUF_ALIGNMENT \
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
#define GFAR_RXB_SIZE rounddown(GFAR_RXB_TRUESIZE - GFAR_SKBFRAG_OVR, 64)
#define GFAR_SKBFRAG_SIZE (GFAR_RXB_SIZE + GFAR_SKBFRAG_OVR)
#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
/* 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
/* 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 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 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)
/* 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
/* CAR1 bits */
#define CAR1_C164 0x80000000
#define CAR1_C1127 0x40000000
#define CAR1_C1255 0x20000000
#define CAR1_C1511 0x10000000
#define CAR1_C11K 0x08000000
#define CAR1_C1MAX 0x04000000
#define CAR1_C1MGV 0x02000000
#define CAR1_C1REJ 0x00020000
#define CAR1_C1RBY 0x00010000
#define CAR1_C1RPK 0x00008000
#define CAR1_C1RFC 0x00004000
#define CAR1_C1RMC 0x00002000
#define CAR1_C1RBC 0x00001000
#define CAR1_C1RXC 0x00000800
#define CAR1_C1RXP 0x00000400
#define CAR1_C1RXU 0x00000200
#define CAR1_C1RAL 0x00000100
#define CAR1_C1RFL 0x00000080
#define CAR1_C1RCD 0x00000040
#define CAR1_C1RCS 0x00000020
#define CAR1_C1RUN 0x00000010
#define CAR1_C1ROV 0x00000008
#define CAR1_C1RFR 0x00000004
#define CAR1_C1RJB 0x00000002
#define CAR1_C1RDR 0x00000001
/* CAM1 bits */
#define CAM1_M164 0x80000000
#define CAM1_M1127 0x40000000
#define CAM1_M1255 0x20000000
#define CAM1_M1511 0x10000000
#define CAM1_M11K 0x08000000
#define CAM1_M1MAX 0x04000000
#define CAM1_M1MGV 0x02000000
#define CAM1_M1REJ 0x00020000
#define CAM1_M1RBY 0x00010000
#define CAM1_M1RPK 0x00008000
#define CAM1_M1RFC 0x00004000
#define CAM1_M1RMC 0x00002000
#define CAM1_M1RBC 0x00001000
#define CAM1_M1RXC 0x00000800
#define CAM1_M1RXP 0x00000400
#define CAM1_M1RXU 0x00000200
#define CAM1_M1RAL 0x00000100
#define CAM1_M1RFL 0x00000080
#define CAM1_M1RCD 0x00000040
#define CAM1_M1RCS 0x00000020
#define CAM1_M1RUN 0x00000010
#define CAM1_M1ROV 0x00000008
#define CAM1_M1RFR 0x00000004
#define CAM1_M1RJB 0x00000002
#define CAM1_M1RDR 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 rmon_overflow {
/* lock for synchronization of the rdrp field of this struct, and
* CAR1/CAR2 registers
*/
spinlock_t lock;
u32 imask;
u64 rdrp;
};
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
};
/*
* Per TX queue stats
*/
struct tx_q_stats {
u64 tx_packets;
u64 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 {
u64 rx_packets;
u64 rx_bytes;
u64 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 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;
struct rmon_overflow rmon_overflow;
/* 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;
}
static inline u32 gfar_read(unsigned __iomem *addr)
{
u32 val;
val = ioread32be(addr);
return val;
}
static inline void gfar_write(unsigned __iomem *addr, u32 val)
{
iowrite32be(val, addr);
}
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);
}
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);
}
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;
}
}
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));
}
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;
}
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
}
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);
}
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;
}
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;
}
int startup_gfar(struct net_device *dev);
void stop_gfar(struct net_device *dev);
void gfar_mac_reset(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
/* 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];
};
#endif /* __GIANFAR_H */