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|
/*
* Ethernet driver for S6105 on chip network device
* (c)2008 emlix GmbH http://www.emlix.com
* Authors: Oskar Schirmer <oskar@scara.com>
* Daniel Gloeckner <dg@emlix.com>
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if.h>
#include <linux/stddef.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
#include <variant/hardware.h>
#include <variant/dmac.h>
#define DRV_NAME "s6gmac"
#define DRV_PRMT DRV_NAME ": "
/* register declarations */
#define S6_GMAC_MACCONF1 0x000
#define S6_GMAC_MACCONF1_TXENA 0
#define S6_GMAC_MACCONF1_SYNCTX 1
#define S6_GMAC_MACCONF1_RXENA 2
#define S6_GMAC_MACCONF1_SYNCRX 3
#define S6_GMAC_MACCONF1_TXFLOWCTRL 4
#define S6_GMAC_MACCONF1_RXFLOWCTRL 5
#define S6_GMAC_MACCONF1_LOOPBACK 8
#define S6_GMAC_MACCONF1_RESTXFUNC 16
#define S6_GMAC_MACCONF1_RESRXFUNC 17
#define S6_GMAC_MACCONF1_RESTXMACCTRL 18
#define S6_GMAC_MACCONF1_RESRXMACCTRL 19
#define S6_GMAC_MACCONF1_SIMULRES 30
#define S6_GMAC_MACCONF1_SOFTRES 31
#define S6_GMAC_MACCONF2 0x004
#define S6_GMAC_MACCONF2_FULL 0
#define S6_GMAC_MACCONF2_CRCENA 1
#define S6_GMAC_MACCONF2_PADCRCENA 2
#define S6_GMAC_MACCONF2_LENGTHFCHK 4
#define S6_GMAC_MACCONF2_HUGEFRAMENA 5
#define S6_GMAC_MACCONF2_IFMODE 8
#define S6_GMAC_MACCONF2_IFMODE_NIBBLE 1
#define S6_GMAC_MACCONF2_IFMODE_BYTE 2
#define S6_GMAC_MACCONF2_IFMODE_MASK 3
#define S6_GMAC_MACCONF2_PREAMBLELEN 12
#define S6_GMAC_MACCONF2_PREAMBLELEN_MASK 0x0F
#define S6_GMAC_MACIPGIFG 0x008
#define S6_GMAC_MACIPGIFG_B2BINTERPGAP 0
#define S6_GMAC_MACIPGIFG_B2BINTERPGAP_MASK 0x7F
#define S6_GMAC_MACIPGIFG_MINIFGENFORCE 8
#define S6_GMAC_MACIPGIFG_B2BINTERPGAP2 16
#define S6_GMAC_MACIPGIFG_B2BINTERPGAP1 24
#define S6_GMAC_MACHALFDUPLEX 0x00C
#define S6_GMAC_MACHALFDUPLEX_COLLISWIN 0
#define S6_GMAC_MACHALFDUPLEX_COLLISWIN_MASK 0x3F
#define S6_GMAC_MACHALFDUPLEX_RETXMAX 12
#define S6_GMAC_MACHALFDUPLEX_RETXMAX_MASK 0x0F
#define S6_GMAC_MACHALFDUPLEX_EXCESSDEF 16
#define S6_GMAC_MACHALFDUPLEX_NOBACKOFF 17
#define S6_GMAC_MACHALFDUPLEX_BPNOBCKOF 18
#define S6_GMAC_MACHALFDUPLEX_ALTBEBENA 19
#define S6_GMAC_MACHALFDUPLEX_ALTBEBTRN 20
#define S6_GMAC_MACHALFDUPLEX_ALTBEBTR_MASK 0x0F
#define S6_GMAC_MACMAXFRAMELEN 0x010
#define S6_GMAC_MACMIICONF 0x020
#define S6_GMAC_MACMIICONF_CSEL 0
#define S6_GMAC_MACMIICONF_CSEL_DIV10 0
#define S6_GMAC_MACMIICONF_CSEL_DIV12 1
#define S6_GMAC_MACMIICONF_CSEL_DIV14 2
#define S6_GMAC_MACMIICONF_CSEL_DIV18 3
#define S6_GMAC_MACMIICONF_CSEL_DIV24 4
#define S6_GMAC_MACMIICONF_CSEL_DIV34 5
#define S6_GMAC_MACMIICONF_CSEL_DIV68 6
#define S6_GMAC_MACMIICONF_CSEL_DIV168 7
#define S6_GMAC_MACMIICONF_CSEL_MASK 7
#define S6_GMAC_MACMIICONF_PREAMBLESUPR 4
#define S6_GMAC_MACMIICONF_SCANAUTOINCR 5
#define S6_GMAC_MACMIICMD 0x024
#define S6_GMAC_MACMIICMD_READ 0
#define S6_GMAC_MACMIICMD_SCAN 1
#define S6_GMAC_MACMIIADDR 0x028
#define S6_GMAC_MACMIIADDR_REG 0
#define S6_GMAC_MACMIIADDR_REG_MASK 0x1F
#define S6_GMAC_MACMIIADDR_PHY 8
#define S6_GMAC_MACMIIADDR_PHY_MASK 0x1F
#define S6_GMAC_MACMIICTRL 0x02C
#define S6_GMAC_MACMIISTAT 0x030
#define S6_GMAC_MACMIIINDI 0x034
#define S6_GMAC_MACMIIINDI_BUSY 0
#define S6_GMAC_MACMIIINDI_SCAN 1
#define S6_GMAC_MACMIIINDI_INVAL 2
#define S6_GMAC_MACINTERFSTAT 0x03C
#define S6_GMAC_MACINTERFSTAT_LINKFAIL 3
#define S6_GMAC_MACINTERFSTAT_EXCESSDEF 9
#define S6_GMAC_MACSTATADDR1 0x040
#define S6_GMAC_MACSTATADDR2 0x044
#define S6_GMAC_FIFOCONF0 0x048
#define S6_GMAC_FIFOCONF0_HSTRSTWT 0
#define S6_GMAC_FIFOCONF0_HSTRSTSR 1
#define S6_GMAC_FIFOCONF0_HSTRSTFR 2
#define S6_GMAC_FIFOCONF0_HSTRSTST 3
#define S6_GMAC_FIFOCONF0_HSTRSTFT 4
#define S6_GMAC_FIFOCONF0_WTMENREQ 8
#define S6_GMAC_FIFOCONF0_SRFENREQ 9
#define S6_GMAC_FIFOCONF0_FRFENREQ 10
#define S6_GMAC_FIFOCONF0_STFENREQ 11
#define S6_GMAC_FIFOCONF0_FTFENREQ 12
#define S6_GMAC_FIFOCONF0_WTMENRPLY 16
#define S6_GMAC_FIFOCONF0_SRFENRPLY 17
#define S6_GMAC_FIFOCONF0_FRFENRPLY 18
#define S6_GMAC_FIFOCONF0_STFENRPLY 19
#define S6_GMAC_FIFOCONF0_FTFENRPLY 20
#define S6_GMAC_FIFOCONF1 0x04C
#define S6_GMAC_FIFOCONF2 0x050
#define S6_GMAC_FIFOCONF2_CFGLWM 0
#define S6_GMAC_FIFOCONF2_CFGHWM 16
#define S6_GMAC_FIFOCONF3 0x054
#define S6_GMAC_FIFOCONF3_CFGFTTH 0
#define S6_GMAC_FIFOCONF3_CFGHWMFT 16
#define S6_GMAC_FIFOCONF4 0x058
#define S6_GMAC_FIFOCONF_RSV_PREVDROP 0
#define S6_GMAC_FIFOCONF_RSV_RUNT 1
#define S6_GMAC_FIFOCONF_RSV_FALSECAR 2
#define S6_GMAC_FIFOCONF_RSV_CODEERR 3
#define S6_GMAC_FIFOCONF_RSV_CRCERR 4
#define S6_GMAC_FIFOCONF_RSV_LENGTHERR 5
#define S6_GMAC_FIFOCONF_RSV_LENRANGE 6
#define S6_GMAC_FIFOCONF_RSV_OK 7
#define S6_GMAC_FIFOCONF_RSV_MULTICAST 8
#define S6_GMAC_FIFOCONF_RSV_BROADCAST 9
#define S6_GMAC_FIFOCONF_RSV_DRIBBLE 10
#define S6_GMAC_FIFOCONF_RSV_CTRLFRAME 11
#define S6_GMAC_FIFOCONF_RSV_PAUSECTRL 12
#define S6_GMAC_FIFOCONF_RSV_UNOPCODE 13
#define S6_GMAC_FIFOCONF_RSV_VLANTAG 14
#define S6_GMAC_FIFOCONF_RSV_LONGEVENT 15
#define S6_GMAC_FIFOCONF_RSV_TRUNCATED 16
#define S6_GMAC_FIFOCONF_RSV_MASK 0x3FFFF
#define S6_GMAC_FIFOCONF5 0x05C
#define S6_GMAC_FIFOCONF5_DROPLT64 18
#define S6_GMAC_FIFOCONF5_CFGBYTM 19
#define S6_GMAC_FIFOCONF5_RXDROPSIZE 20
#define S6_GMAC_FIFOCONF5_RXDROPSIZE_MASK 0xF
#define S6_GMAC_STAT_REGS 0x080
#define S6_GMAC_STAT_SIZE_MIN 12
#define S6_GMAC_STATTR64 0x080
#define S6_GMAC_STATTR64_SIZE 18
#define S6_GMAC_STATTR127 0x084
#define S6_GMAC_STATTR127_SIZE 18
#define S6_GMAC_STATTR255 0x088
#define S6_GMAC_STATTR255_SIZE 18
#define S6_GMAC_STATTR511 0x08C
#define S6_GMAC_STATTR511_SIZE 18
#define S6_GMAC_STATTR1K 0x090
#define S6_GMAC_STATTR1K_SIZE 18
#define S6_GMAC_STATTRMAX 0x094
#define S6_GMAC_STATTRMAX_SIZE 18
#define S6_GMAC_STATTRMGV 0x098
#define S6_GMAC_STATTRMGV_SIZE 18
#define S6_GMAC_STATRBYT 0x09C
#define S6_GMAC_STATRBYT_SIZE 24
#define S6_GMAC_STATRPKT 0x0A0
#define S6_GMAC_STATRPKT_SIZE 18
#define S6_GMAC_STATRFCS 0x0A4
#define S6_GMAC_STATRFCS_SIZE 12
#define S6_GMAC_STATRMCA 0x0A8
#define S6_GMAC_STATRMCA_SIZE 18
#define S6_GMAC_STATRBCA 0x0AC
#define S6_GMAC_STATRBCA_SIZE 22
#define S6_GMAC_STATRXCF 0x0B0
#define S6_GMAC_STATRXCF_SIZE 18
#define S6_GMAC_STATRXPF 0x0B4
#define S6_GMAC_STATRXPF_SIZE 12
#define S6_GMAC_STATRXUO 0x0B8
#define S6_GMAC_STATRXUO_SIZE 12
#define S6_GMAC_STATRALN 0x0BC
#define S6_GMAC_STATRALN_SIZE 12
#define S6_GMAC_STATRFLR 0x0C0
#define S6_GMAC_STATRFLR_SIZE 16
#define S6_GMAC_STATRCDE 0x0C4
#define S6_GMAC_STATRCDE_SIZE 12
#define S6_GMAC_STATRCSE 0x0C8
#define S6_GMAC_STATRCSE_SIZE 12
#define S6_GMAC_STATRUND 0x0CC
#define S6_GMAC_STATRUND_SIZE 12
#define S6_GMAC_STATROVR 0x0D0
#define S6_GMAC_STATROVR_SIZE 12
#define S6_GMAC_STATRFRG 0x0D4
#define S6_GMAC_STATRFRG_SIZE 12
#define S6_GMAC_STATRJBR 0x0D8
#define S6_GMAC_STATRJBR_SIZE 12
#define S6_GMAC_STATRDRP 0x0DC
#define S6_GMAC_STATRDRP_SIZE 12
#define S6_GMAC_STATTBYT 0x0E0
#define S6_GMAC_STATTBYT_SIZE 24
#define S6_GMAC_STATTPKT 0x0E4
#define S6_GMAC_STATTPKT_SIZE 18
#define S6_GMAC_STATTMCA 0x0E8
#define S6_GMAC_STATTMCA_SIZE 18
#define S6_GMAC_STATTBCA 0x0EC
#define S6_GMAC_STATTBCA_SIZE 18
#define S6_GMAC_STATTXPF 0x0F0
#define S6_GMAC_STATTXPF_SIZE 12
#define S6_GMAC_STATTDFR 0x0F4
#define S6_GMAC_STATTDFR_SIZE 12
#define S6_GMAC_STATTEDF 0x0F8
#define S6_GMAC_STATTEDF_SIZE 12
#define S6_GMAC_STATTSCL 0x0FC
#define S6_GMAC_STATTSCL_SIZE 12
#define S6_GMAC_STATTMCL 0x100
#define S6_GMAC_STATTMCL_SIZE 12
#define S6_GMAC_STATTLCL 0x104
#define S6_GMAC_STATTLCL_SIZE 12
#define S6_GMAC_STATTXCL 0x108
#define S6_GMAC_STATTXCL_SIZE 12
#define S6_GMAC_STATTNCL 0x10C
#define S6_GMAC_STATTNCL_SIZE 13
#define S6_GMAC_STATTPFH 0x110
#define S6_GMAC_STATTPFH_SIZE 12
#define S6_GMAC_STATTDRP 0x114
#define S6_GMAC_STATTDRP_SIZE 12
#define S6_GMAC_STATTJBR 0x118
#define S6_GMAC_STATTJBR_SIZE 12
#define S6_GMAC_STATTFCS 0x11C
#define S6_GMAC_STATTFCS_SIZE 12
#define S6_GMAC_STATTXCF 0x120
#define S6_GMAC_STATTXCF_SIZE 12
#define S6_GMAC_STATTOVR 0x124
#define S6_GMAC_STATTOVR_SIZE 12
#define S6_GMAC_STATTUND 0x128
#define S6_GMAC_STATTUND_SIZE 12
#define S6_GMAC_STATTFRG 0x12C
#define S6_GMAC_STATTFRG_SIZE 12
#define S6_GMAC_STATCARRY(n) (0x130 + 4*(n))
#define S6_GMAC_STATCARRYMSK(n) (0x138 + 4*(n))
#define S6_GMAC_STATCARRY1_RDRP 0
#define S6_GMAC_STATCARRY1_RJBR 1
#define S6_GMAC_STATCARRY1_RFRG 2
#define S6_GMAC_STATCARRY1_ROVR 3
#define S6_GMAC_STATCARRY1_RUND 4
#define S6_GMAC_STATCARRY1_RCSE 5
#define S6_GMAC_STATCARRY1_RCDE 6
#define S6_GMAC_STATCARRY1_RFLR 7
#define S6_GMAC_STATCARRY1_RALN 8
#define S6_GMAC_STATCARRY1_RXUO 9
#define S6_GMAC_STATCARRY1_RXPF 10
#define S6_GMAC_STATCARRY1_RXCF 11
#define S6_GMAC_STATCARRY1_RBCA 12
#define S6_GMAC_STATCARRY1_RMCA 13
#define S6_GMAC_STATCARRY1_RFCS 14
#define S6_GMAC_STATCARRY1_RPKT 15
#define S6_GMAC_STATCARRY1_RBYT 16
#define S6_GMAC_STATCARRY1_TRMGV 25
#define S6_GMAC_STATCARRY1_TRMAX 26
#define S6_GMAC_STATCARRY1_TR1K 27
#define S6_GMAC_STATCARRY1_TR511 28
#define S6_GMAC_STATCARRY1_TR255 29
#define S6_GMAC_STATCARRY1_TR127 30
#define S6_GMAC_STATCARRY1_TR64 31
#define S6_GMAC_STATCARRY2_TDRP 0
#define S6_GMAC_STATCARRY2_TPFH 1
#define S6_GMAC_STATCARRY2_TNCL 2
#define S6_GMAC_STATCARRY2_TXCL 3
#define S6_GMAC_STATCARRY2_TLCL 4
#define S6_GMAC_STATCARRY2_TMCL 5
#define S6_GMAC_STATCARRY2_TSCL 6
#define S6_GMAC_STATCARRY2_TEDF 7
#define S6_GMAC_STATCARRY2_TDFR 8
#define S6_GMAC_STATCARRY2_TXPF 9
#define S6_GMAC_STATCARRY2_TBCA 10
#define S6_GMAC_STATCARRY2_TMCA 11
#define S6_GMAC_STATCARRY2_TPKT 12
#define S6_GMAC_STATCARRY2_TBYT 13
#define S6_GMAC_STATCARRY2_TFRG 14
#define S6_GMAC_STATCARRY2_TUND 15
#define S6_GMAC_STATCARRY2_TOVR 16
#define S6_GMAC_STATCARRY2_TXCF 17
#define S6_GMAC_STATCARRY2_TFCS 18
#define S6_GMAC_STATCARRY2_TJBR 19
#define S6_GMAC_HOST_PBLKCTRL 0x140
#define S6_GMAC_HOST_PBLKCTRL_TXENA 0
#define S6_GMAC_HOST_PBLKCTRL_RXENA 1
#define S6_GMAC_HOST_PBLKCTRL_TXSRES 2
#define S6_GMAC_HOST_PBLKCTRL_RXSRES 3
#define S6_GMAC_HOST_PBLKCTRL_TXBSIZ 8
#define S6_GMAC_HOST_PBLKCTRL_RXBSIZ 12
#define S6_GMAC_HOST_PBLKCTRL_SIZ_16 4
#define S6_GMAC_HOST_PBLKCTRL_SIZ_32 5
#define S6_GMAC_HOST_PBLKCTRL_SIZ_64 6
#define S6_GMAC_HOST_PBLKCTRL_SIZ_128 7
#define S6_GMAC_HOST_PBLKCTRL_SIZ_MASK 0xF
#define S6_GMAC_HOST_PBLKCTRL_STATENA 16
#define S6_GMAC_HOST_PBLKCTRL_STATAUTOZ 17
#define S6_GMAC_HOST_PBLKCTRL_STATCLEAR 18
#define S6_GMAC_HOST_PBLKCTRL_RGMII 19
#define S6_GMAC_HOST_INTMASK 0x144
#define S6_GMAC_HOST_INTSTAT 0x148
#define S6_GMAC_HOST_INT_TXBURSTOVER 3
#define S6_GMAC_HOST_INT_TXPREWOVER 4
#define S6_GMAC_HOST_INT_RXBURSTUNDER 5
#define S6_GMAC_HOST_INT_RXPOSTRFULL 6
#define S6_GMAC_HOST_INT_RXPOSTRUNDER 7
#define S6_GMAC_HOST_RXFIFOHWM 0x14C
#define S6_GMAC_HOST_CTRLFRAMXP 0x150
#define S6_GMAC_HOST_DSTADDRLO(n) (0x160 + 8*(n))
#define S6_GMAC_HOST_DSTADDRHI(n) (0x164 + 8*(n))
#define S6_GMAC_HOST_DSTMASKLO(n) (0x180 + 8*(n))
#define S6_GMAC_HOST_DSTMASKHI(n) (0x184 + 8*(n))
#define S6_GMAC_BURST_PREWR 0x1B0
#define S6_GMAC_BURST_PREWR_LEN 0
#define S6_GMAC_BURST_PREWR_LEN_MASK ((1 << 20) - 1)
#define S6_GMAC_BURST_PREWR_CFE 20
#define S6_GMAC_BURST_PREWR_PPE 21
#define S6_GMAC_BURST_PREWR_FCS 22
#define S6_GMAC_BURST_PREWR_PAD 23
#define S6_GMAC_BURST_POSTRD 0x1D0
#define S6_GMAC_BURST_POSTRD_LEN 0
#define S6_GMAC_BURST_POSTRD_LEN_MASK ((1 << 20) - 1)
#define S6_GMAC_BURST_POSTRD_DROP 20
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