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📄 if_rl.c(54.08 KB)
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Editing: if_rlreg.h

/*-
 * Copyright (c) 1997, 1998-2003
 *	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Bill Paul.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD$
 */

/*
 * RealTek 8129/8139 register offsets
 */
#define	RL_IDR0		0x0000		/* ID register 0 (station addr) */
#define	RL_IDR1		0x0001		/* Must use 32-bit accesses (?) */
#define	RL_IDR2		0x0002
#define	RL_IDR3		0x0003
#define	RL_IDR4		0x0004
#define	RL_IDR5		0x0005
					/* 0006-0007 reserved */
#define	RL_MAR0		0x0008		/* Multicast hash table */
#define	RL_MAR1		0x0009
#define	RL_MAR2		0x000A
#define	RL_MAR3		0x000B
#define	RL_MAR4		0x000C
#define	RL_MAR5		0x000D
#define	RL_MAR6		0x000E
#define	RL_MAR7		0x000F

#define	RL_TXSTAT0	0x0010		/* status of TX descriptor 0 */
#define	RL_TXSTAT1	0x0014		/* status of TX descriptor 1 */
#define	RL_TXSTAT2	0x0018		/* status of TX descriptor 2 */
#define	RL_TXSTAT3	0x001C		/* status of TX descriptor 3 */

#define	RL_TXADDR0	0x0020		/* address of TX descriptor 0 */
#define	RL_TXADDR1	0x0024		/* address of TX descriptor 1 */
#define	RL_TXADDR2	0x0028		/* address of TX descriptor 2 */
#define	RL_TXADDR3	0x002C		/* address of TX descriptor 3 */

#define	RL_RXADDR		0x0030	/* RX ring start address */
#define	RL_RX_EARLY_BYTES	0x0034	/* RX early byte count */
#define	RL_RX_EARLY_STAT	0x0036	/* RX early status */
#define	RL_COMMAND	0x0037		/* command register */
#define	RL_CURRXADDR	0x0038		/* current address of packet read */
#define	RL_CURRXBUF	0x003A		/* current RX buffer address */
#define	RL_IMR		0x003C		/* interrupt mask register */
#define	RL_ISR		0x003E		/* interrupt status register */
#define	RL_TXCFG	0x0040		/* transmit config */
#define	RL_RXCFG	0x0044		/* receive config */
#define	RL_TIMERCNT	0x0048		/* timer count register */
#define	RL_MISSEDPKT	0x004C		/* missed packet counter */
#define	RL_EECMD	0x0050		/* EEPROM command register */

/* RTL8139/RTL8139C+ only */
#define	RL_8139_CFG0	0x0051		/* config register #0 */
#define	RL_8139_CFG1	0x0052		/* config register #1 */
#define	RL_8139_CFG3	0x0059		/* config register #3 */
#define	RL_8139_CFG4	0x005A		/* config register #4 */
#define	RL_8139_CFG5	0x00D8		/* config register #5 */

#define	RL_CFG0		0x0051		/* config register #0 */
#define	RL_CFG1		0x0052		/* config register #1 */
#define	RL_CFG2		0x0053		/* config register #2 */
#define	RL_CFG3		0x0054		/* config register #3 */
#define	RL_CFG4		0x0055		/* config register #4 */
#define	RL_CFG5		0x0056		/* config register #5 */
					/* 0057 reserved */
#define	RL_MEDIASTAT	0x0058		/* media status register (8139) */
					/* 0059-005A reserved */
#define	RL_MII		0x005A		/* 8129 chip only */
#define	RL_HALTCLK	0x005B
#define	RL_MULTIINTR	0x005C		/* multiple interrupt */
#define	RL_PCIREV	0x005E		/* PCI revision value */
					/* 005F reserved */
#define	RL_TXSTAT_ALL	0x0060		/* TX status of all descriptors */

/* Direct PHY access registers only available on 8139 */
#define	RL_BMCR		0x0062		/* PHY basic mode control */
#define	RL_BMSR		0x0064		/* PHY basic mode status */
#define	RL_ANAR		0x0066		/* PHY autoneg advert */
#define	RL_LPAR		0x0068		/* PHY link partner ability */
#define	RL_ANER		0x006A		/* PHY autoneg expansion */

#define	RL_DISCCNT	0x006C		/* disconnect counter */
#define	RL_FALSECAR	0x006E		/* false carrier counter */
#define	RL_NWAYTST	0x0070		/* NWAY test register */
#define	RL_RX_ER	0x0072		/* RX_ER counter */
#define	RL_CSCFG	0x0074		/* CS configuration register */

/*
 * When operating in special C+ mode, some of the registers in an
 * 8139C+ chip have different definitions. These are also used for
 * the 8169 gigE chip.
 */
#define	RL_DUMPSTATS_LO		0x0010	/* counter dump command register */
#define	RL_DUMPSTATS_HI		0x0014	/* counter dump command register */
#define	RL_TXLIST_ADDR_LO	0x0020	/* 64 bits, 256 byte alignment */
#define	RL_TXLIST_ADDR_HI	0x0024	/* 64 bits, 256 byte alignment */
#define	RL_TXLIST_ADDR_HPRIO_LO	0x0028	/* 64 bits, 256 byte alignment */
#define	RL_TXLIST_ADDR_HPRIO_HI	0x002C	/* 64 bits, 256 byte alignment */
#define	RL_CFG2			0x0053
#define	RL_TIMERINT		0x0054	/* interrupt on timer expire */
#define	RL_TXSTART		0x00D9	/* 8 bits */
#define	RL_CPLUS_CMD		0x00E0	/* 16 bits */
#define	RL_RXLIST_ADDR_LO	0x00E4	/* 64 bits, 256 byte alignment */
#define	RL_RXLIST_ADDR_HI	0x00E8	/* 64 bits, 256 byte alignment */
#define	RL_EARLY_TX_THRESH	0x00EC	/* 8 bits */

/*
 * Registers specific to the 8169 gigE chip
 */
#define	RL_GTXSTART		0x0038	/* 8 bits */
#define	RL_TIMERINT_8169	0x0058	/* different offset than 8139 */
#define	RL_PHYAR		0x0060
#define	RL_TBICSR		0x0064
#define	RL_TBI_ANAR		0x0068
#define	RL_TBI_LPAR		0x006A
#define	RL_GMEDIASTAT		0x006C	/* 8 bits */
#define	RL_MACDBG		0x006D	/* 8 bits, 8168C SPIN2 only */
#define	RL_GPIO			0x006E	/* 8 bits, 8168C SPIN2 only */
#define	RL_PMCH			0x006F	/* 8 bits */
#define	RL_MAXRXPKTLEN		0x00DA	/* 16 bits, chip multiplies by 8 */
#define	RL_INTRMOD		0x00E2	/* 16 bits */
#define	RL_MISC			0x00F0

/*
 * TX config register bits
 */
#define	RL_TXCFG_CLRABRT	0x00000001	/* retransmit aborted pkt */
#define	RL_TXCFG_MAXDMA		0x00000700	/* max DMA burst size */
#define	RL_TXCFG_QUEUE_EMPTY	0x00000800	/* 8168E-VL or higher */
#define	RL_TXCFG_CRCAPPEND	0x00010000	/* CRC append (0 = yes) */
#define	RL_TXCFG_LOOPBKTST	0x00060000	/* loopback test */
#define	RL_TXCFG_IFG2		0x00080000	/* 8169 only */
#define	RL_TXCFG_IFG		0x03000000	/* interframe gap */
#define	RL_TXCFG_HWREV		0x7CC00000

#define	RL_LOOPTEST_OFF		0x00000000
#define	RL_LOOPTEST_ON		0x00020000
#define	RL_LOOPTEST_ON_CPLUS	0x00060000

/* Known revision codes. */
#define	RL_HWREV_8169		0x00000000
#define	RL_HWREV_8169S		0x00800000
#define	RL_HWREV_8110S		0x04000000
#define	RL_HWREV_8169_8110SB	0x10000000
#define	RL_HWREV_8169_8110SC	0x18000000
#define	RL_HWREV_8401E		0x24000000
#define	RL_HWREV_8102EL		0x24800000
#define	RL_HWREV_8102EL_SPIN1	0x24C00000
#define	RL_HWREV_8168D		0x28000000
#define	RL_HWREV_8168DP		0x28800000
#define	RL_HWREV_8168E		0x2C000000
#define	RL_HWREV_8168E_VL	0x2C800000
#define	RL_HWREV_8168B_SPIN1	0x30000000
#define	RL_HWREV_8100E		0x30800000
#define	RL_HWREV_8101E		0x34000000
#define	RL_HWREV_8102E		0x34800000
#define	RL_HWREV_8103E		0x34C00000
#define	RL_HWREV_8168B_SPIN2	0x38000000
#define	RL_HWREV_8168B_SPIN3	0x38400000
#define	RL_HWREV_8168C		0x3C000000
#define	RL_HWREV_8168C_SPIN2	0x3C400000
#define	RL_HWREV_8168CP		0x3C800000
#define	RL_HWREV_8105E		0x40800000
#define	RL_HWREV_8105E_SPIN1	0x40C00000
#define	RL_HWREV_8402		0x44000000
#define	RL_HWREV_8106E		0x44800000
#define	RL_HWREV_8168F		0x48000000
#define	RL_HWREV_8411		0x48800000
#define	RL_HWREV_8168G		0x4C000000
#define	RL_HWREV_8168EP		0x50000000
#define	RL_HWREV_8168GU		0x50800000
#define	RL_HWREV_8168H		0x54000000
#define	RL_HWREV_8411B		0x5C800000
#define	RL_HWREV_8139		0x60000000
#define	RL_HWREV_8139A		0x70000000
#define	RL_HWREV_8139AG		0x70800000
#define	RL_HWREV_8139B		0x78000000
#define	RL_HWREV_8130		0x7C000000
#define	RL_HWREV_8139C		0x74000000
#define	RL_HWREV_8139D		0x74400000
#define	RL_HWREV_8139CPLUS	0x74800000
#define	RL_HWREV_8101		0x74C00000
#define	RL_HWREV_8100		0x78800000
#define	RL_HWREV_8169_8110SBL	0x7CC00000
#define	RL_HWREV_8169_8110SCE	0x98000000

#define	RL_TXDMA_16BYTES	0x00000000
#define	RL_TXDMA_32BYTES	0x00000100
#define	RL_TXDMA_64BYTES	0x00000200
#define	RL_TXDMA_128BYTES	0x00000300
#define	RL_TXDMA_256BYTES	0x00000400
#define	RL_TXDMA_512BYTES	0x00000500
#define	RL_TXDMA_1024BYTES	0x00000600
#define	RL_TXDMA_2048BYTES	0x00000700

/*
 * Transmit descriptor status register bits.
 */
#define	RL_TXSTAT_LENMASK	0x00001FFF
#define	RL_TXSTAT_OWN		0x00002000
#define	RL_TXSTAT_TX_UNDERRUN	0x00004000
#define	RL_TXSTAT_TX_OK		0x00008000
#define	RL_TXSTAT_EARLY_THRESH	0x003F0000
#define	RL_TXSTAT_COLLCNT	0x0F000000
#define	RL_TXSTAT_CARR_HBEAT	0x10000000
#define	RL_TXSTAT_OUTOFWIN	0x20000000
#define	RL_TXSTAT_TXABRT	0x40000000
#define	RL_TXSTAT_CARRLOSS	0x80000000

/*
 * Interrupt status register bits.
 */
#define	RL_ISR_RX_OK		0x0001
#define	RL_ISR_RX_ERR		0x0002
#define	RL_ISR_TX_OK		0x0004
#define	RL_ISR_TX_ERR		0x0008
#define	RL_ISR_RX_OVERRUN	0x0010
#define	RL_ISR_PKT_UNDERRUN	0x0020
#define	RL_ISR_LINKCHG		0x0020	/* 8169 only */
#define	RL_ISR_FIFO_OFLOW	0x0040	/* 8139 only */
#define	RL_ISR_TX_DESC_UNAVAIL	0x0080	/* C+ only */
#define	RL_ISR_SWI		0x0100	/* C+ only */
#define	RL_ISR_CABLE_LEN_CHGD	0x2000
#define	RL_ISR_PCS_TIMEOUT	0x4000	/* 8129 only */
#define	RL_ISR_TIMEOUT_EXPIRED	0x4000
#define	RL_ISR_SYSTEM_ERR	0x8000

/*
 * Media status register. (8139 only)
 */
#define	RL_MEDIASTAT_RXPAUSE	0x01
#define	RL_MEDIASTAT_TXPAUSE	0x02
#define	RL_MEDIASTAT_LINK	0x04
#define	RL_MEDIASTAT_SPEED10	0x08
#define	RL_MEDIASTAT_RXFLOWCTL	0x40	/* duplex mode */
#define	RL_MEDIASTAT_TXFLOWCTL	0x80	/* duplex mode */

/*
 * Receive config register.
 */
#define	RL_RXCFG_RX_ALLPHYS	0x00000001	/* accept all nodes */
#define	RL_RXCFG_RX_INDIV	0x00000002	/* match filter */
#define	RL_RXCFG_RX_MULTI	0x00000004	/* accept all multicast */
#define	RL_RXCFG_RX_BROAD	0x00000008	/* accept all broadcast */
#define	RL_RXCFG_RX_RUNT	0x00000010
#define	RL_RXCFG_RX_ERRPKT	0x00000020
#define	RL_RXCFG_WRAP		0x00000080
#define	RL_RXCFG_EARLYOFFV2	0x00000800
#define	RL_RXCFG_MAXDMA		0x00000700
#define	RL_RXCFG_BUFSZ		0x00001800
#define	RL_RXCFG_EARLYOFF	0x00003800
#define	RL_RXCFG_FIFOTHRESH	0x0000E000
#define	RL_RXCFG_EARLYTHRESH	0x07000000

#define	RL_RXDMA_16BYTES	0x00000000
#define	RL_RXDMA_32BYTES	0x00000100
#define	RL_RXDMA_64BYTES	0x00000200
#define	RL_RXDMA_128BYTES	0x00000300
#define	RL_RXDMA_256BYTES	0x00000400
#define	RL_RXDMA_512BYTES	0x00000500
#define	RL_RXDMA_1024BYTES	0x00000600
#define	RL_RXDMA_UNLIMITED	0x00000700

#define	RL_RXBUF_8		0x00000000
#define	RL_RXBUF_16		0x00000800
#define	RL_RXBUF_32		0x00001000
#define	RL_RXBUF_64		0x00001800

#define	RL_RXFIFO_16BYTES	0x00000000
#define	RL_RXFIFO_32BYTES	0x00002000
#define	RL_RXFIFO_64BYTES	0x00004000
#define	RL_RXFIFO_128BYTES	0x00006000
#define	RL_RXFIFO_256BYTES	0x00008000
#define	RL_RXFIFO_512BYTES	0x0000A000
#define	RL_RXFIFO_1024BYTES	0x0000C000
#define	RL_RXFIFO_NOTHRESH	0x0000E000

/*
 * Bits in RX status header (included with RX'ed packet
 * in ring buffer).
 */
#define	RL_RXSTAT_RXOK		0x00000001
#define	RL_RXSTAT_ALIGNERR	0x00000002
#define	RL_RXSTAT_CRCERR	0x00000004
#define	RL_RXSTAT_GIANT		0x00000008
#define	RL_RXSTAT_RUNT		0x00000010
#define	RL_RXSTAT_BADSYM	0x00000020
#define	RL_RXSTAT_BROAD		0x00002000
#define	RL_RXSTAT_INDIV		0x00004000
#define	RL_RXSTAT_MULTI		0x00008000
#define	RL_RXSTAT_LENMASK	0xFFFF0000
#define	RL_RXSTAT_UNFINISHED	0x0000FFF0	/* DMA still in progress */

/*
 * Command register.
 */
#define	RL_CMD_EMPTY_RXBUF	0x0001
#define	RL_CMD_TX_ENB		0x0004
#define	RL_CMD_RX_ENB		0x0008
#define	RL_CMD_RESET		0x0010
#define	RL_CMD_STOPREQ		0x0080

/*
 * Twister register values.  These are completely undocumented and derived
 * from public sources.
 */
#define	RL_CSCFG_LINK_OK	0x0400
#define	RL_CSCFG_CHANGE		0x0800
#define	RL_CSCFG_STATUS		0xf000
#define	RL_CSCFG_ROW3		0x7000
#define	RL_CSCFG_ROW2		0x3000
#define	RL_CSCFG_ROW1		0x1000
#define	RL_CSCFG_LINK_DOWN_OFF_CMD 0x03c0
#define	RL_CSCFG_LINK_DOWN_CMD	0xf3c0

#define	RL_NWAYTST_RESET	0
#define	RL_NWAYTST_CBL_TEST	0x20

#define	RL_PARA78		0x78
#define	RL_PARA78_DEF		0x78fa8388
#define	RL_PARA7C		0x7C
#define	RL_PARA7C_DEF		0xcb38de43
#define	RL_PARA7C_RETUNE	0xfb38de03

/*
 * EEPROM control register
 */
#define	RL_EE_DATAOUT		0x01	/* Data out */
#define	RL_EE_DATAIN		0x02	/* Data in */
#define	RL_EE_CLK		0x04	/* clock */
#define	RL_EE_SEL		0x08	/* chip select */
#define	RL_EE_MODE		(0x40|0x80)

#define	RL_EEMODE_OFF		0x00
#define	RL_EEMODE_AUTOLOAD	0x40
#define	RL_EEMODE_PROGRAM	0x80
#define	RL_EEMODE_WRITECFG	(0x80|0x40)

/* 9346 EEPROM commands */
#define	RL_9346_ADDR_LEN	6	/* 93C46 1K: 128x16 */
#define	RL_9356_ADDR_LEN	8	/* 93C56 2K: 256x16 */

#define	RL_9346_WRITE		0x5
#define	RL_9346_READ		0x6
#define	RL_9346_ERASE		0x7
#define	RL_9346_EWEN		0x4
#define	RL_9346_EWEN_ADDR	0x30
#define	RL_9456_EWDS		0x4
#define	RL_9346_EWDS_ADDR	0x00

#define	RL_EECMD_WRITE		0x140
#define	RL_EECMD_READ_6BIT	0x180
#define	RL_EECMD_READ_8BIT	0x600
#define	RL_EECMD_ERASE		0x1c0

#define	RL_EE_ID		0x00
#define	RL_EE_PCI_VID		0x01
#define	RL_EE_PCI_DID		0x02
/* Location of station address inside EEPROM */
#define	RL_EE_EADDR		0x07

/*
 * MII register (8129 only)
 */
#define	RL_MII_CLK		0x01
#define	RL_MII_DATAIN		0x02
#define	RL_MII_DATAOUT		0x04
#define	RL_MII_DIR		0x80	/* 0 == input, 1 == output */

/*
 * Config 0 register
 */
#define	RL_CFG0_ROM0		0x01
#define	RL_CFG0_ROM1		0x02
#define	RL_CFG0_ROM2		0x04
#define	RL_CFG0_PL0		0x08
#define	RL_CFG0_PL1		0x10
#define	RL_CFG0_10MBPS		0x20	/* 10 Mbps internal mode */
#define	RL_CFG0_PCS		0x40
#define	RL_CFG0_SCR		0x80

/*
 * Config 1 register
 */
#define	RL_CFG1_PWRDWN		0x01
#define	RL_CFG1_PME		0x01
#define	RL_CFG1_SLEEP		0x02
#define	RL_CFG1_VPDEN		0x02
#define	RL_CFG1_IOMAP		0x04
#define	RL_CFG1_MEMMAP		0x08
#define	RL_CFG1_RSVD		0x10
#define	RL_CFG1_LWACT		0x10
#define	RL_CFG1_DRVLOAD		0x20
#define	RL_CFG1_LED0		0x40
#define	RL_CFG1_FULLDUPLEX	0x40	/* 8129 only */
#define	RL_CFG1_LED1		0x80

/*
 * Config 2 register
 */
#define	RL_CFG2_PCI33MHZ	0x00
#define	RL_CFG2_PCI66MHZ	0x01
#define	RL_CFG2_PCI64BIT	0x08
#define	RL_CFG2_AUXPWR		0x10
#define	RL_CFG2_MSI		0x20

/*
 * Config 3 register
 */
#define	RL_CFG3_GRANTSEL	0x80
#define	RL_CFG3_WOL_MAGIC	0x20
#define	RL_CFG3_WOL_LINK	0x10
#define	RL_CFG3_JUMBO_EN0	0x04	/* RTL8168C or later. */
#define	RL_CFG3_FAST_B2B	0x01

/*
 * Config 4 register
 */
#define	RL_CFG4_LWPTN		0x04
#define	RL_CFG4_LWPME		0x10
#define	RL_CFG4_JUMBO_EN1	0x02	/* RTL8168C or later. */

/*
 * Config 5 register
 */
#define	RL_CFG5_WOL_BCAST	0x40
#define	RL_CFG5_WOL_MCAST	0x20
#define	RL_CFG5_WOL_UCAST	0x10
#define	RL_CFG5_WOL_LANWAKE	0x02
#define	RL_CFG5_PME_STS		0x01

/*
 * 8139C+ register definitions
 */

/* RL_DUMPSTATS_LO register */
#define	RL_DUMPSTATS_START	0x00000008

/* Transmit start register */
#define	RL_TXSTART_SWI		0x01	/* generate TX interrupt */
#define	RL_TXSTART_START	0x40	/* start normal queue transmit */
#define	RL_TXSTART_HPRIO_START	0x80	/* start hi prio queue transmit */

/*
 * Config 2 register, 8139C+/8169/8169S/8110S only
 */
#define	RL_CFG2_BUSFREQ		0x07
#define	RL_CFG2_BUSWIDTH	0x08
#define	RL_CFG2_AUXPWRSTS	0x10

#define	RL_BUSFREQ_33MHZ	0x00
#define	RL_BUSFREQ_66MHZ	0x01

#define	RL_BUSWIDTH_32BITS	0x00
#define	RL_BUSWIDTH_64BITS	0x08

/* C+ mode command register */
#define	RL_CPLUSCMD_TXENB	0x0001	/* enable C+ transmit mode */
#define	RL_CPLUSCMD_RXENB	0x0002	/* enable C+ receive mode */
#define	RL_CPLUSCMD_PCI_MRW	0x0008	/* enable PCI multi-read/write */
#define	RL_CPLUSCMD_PCI_DAC	0x0010	/* PCI dual-address cycle only */
#define	RL_CPLUSCMD_RXCSUM_ENB	0x0020	/* enable RX checksum offload */
#define	RL_CPLUSCMD_VLANSTRIP	0x0040	/* enable VLAN tag stripping */
#define	RL_CPLUSCMD_MACSTAT_DIS	0x0080	/* 8168B/C/CP */
#define	RL_CPLUSCMD_ASF		0x0100	/* 8168C/CP */
#define	RL_CPLUSCMD_DBG_SEL	0x0200	/* 8168C/CP */
#define	RL_CPLUSCMD_FORCE_TXFC	0x0400	/* 8168C/CP */
#define	RL_CPLUSCMD_FORCE_RXFC	0x0800	/* 8168C/CP */
#define	RL_CPLUSCMD_FORCE_HDPX	0x1000	/* 8168C/CP */
#define	RL_CPLUSCMD_NORMAL_MODE	0x2000	/* 8168C/CP */
#define	RL_CPLUSCMD_DBG_ENB	0x4000	/* 8168C/CP */
#define	RL_CPLUSCMD_BIST_ENB	0x8000	/* 8168C/CP */

/* C+ early transmit threshold */
#define	RL_EARLYTXTHRESH_CNT	0x003F	/* byte count times 8 */

/* Timer interrupt register */
#define	RL_TIMERINT_8169_VAL	0x00001FFF
#define	RL_TIMER_MIN		0
#define	RL_TIMER_MAX		65	/* 65.528us */
#define	RL_TIMER_DEFAULT	RL_TIMER_MAX
#define	RL_TIMER_PCIE_CLK	125	/* 125MHZ */
#define	RL_USECS(x)		((x) * RL_TIMER_PCIE_CLK)

/*
 * Gigabit PHY access register (8169 only)
 */
#define	RL_PHYAR_PHYDATA	0x0000FFFF
#define	RL_PHYAR_PHYREG		0x001F0000
#define	RL_PHYAR_BUSY		0x80000000

/*
 * Gigabit media status (8169 only)
 */
#define	RL_GMEDIASTAT_FDX	0x01	/* full duplex */
#define	RL_GMEDIASTAT_LINK	0x02	/* link up */
#define	RL_GMEDIASTAT_10MBPS	0x04	/* 10mps link */
#define	RL_GMEDIASTAT_100MBPS	0x08	/* 100mbps link */
#define	RL_GMEDIASTAT_1000MBPS	0x10	/* gigE link */
#define	RL_GMEDIASTAT_RXFLOW	0x20	/* RX flow control on */
#define	RL_GMEDIASTAT_TXFLOW	0x40	/* TX flow control on */
#define	RL_GMEDIASTAT_TBI	0x80	/* TBI enabled */

/*
 * The RealTek doesn't use a fragment-based descriptor mechanism.
 * Instead, there are only four register sets, each or which represents
 * one 'descriptor.' Basically, each TX descriptor is just a contiguous
 * packet buffer (32-bit aligned!) and we place the buffer addresses in
 * the registers so the chip knows where they are.
 *
 * We can sort of kludge together the same kind of buffer management
 * used in previous drivers, but we have to do buffer copies almost all
 * the time, so it doesn't really buy us much.
 *
 * For reception, there's just one large buffer where the chip stores
 * all received packets.
 */
#define	RL_RX_BUF_SZ		RL_RXBUF_64
#define	RL_RXBUFLEN		(1 << ((RL_RX_BUF_SZ >> 11) + 13))
#define	RL_TX_LIST_CNT		4
#define	RL_MIN_FRAMELEN		60
#define	RL_TX_8139_BUF_ALIGN	4
#define	RL_RX_8139_BUF_ALIGN	8
#define	RL_RX_8139_BUF_RESERVE	sizeof(int64_t)
#define	RL_RX_8139_BUF_GUARD_SZ	\
	(ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN + RL_RX_8139_BUF_RESERVE)
#define	RL_TXTHRESH(x)		((x) << 11)
#define	RL_TX_THRESH_INIT	96
#define	RL_RX_FIFOTHRESH	RL_RXFIFO_NOTHRESH
#define	RL_RX_MAXDMA		RL_RXDMA_UNLIMITED
#define	RL_TX_MAXDMA		RL_TXDMA_2048BYTES

#define	RL_RXCFG_CONFIG (RL_RX_FIFOTHRESH|RL_RX_MAXDMA|RL_RX_BUF_SZ)
#define	RL_TXCFG_CONFIG	(RL_TXCFG_IFG|RL_TX_MAXDMA)

#define	RL_ETHER_ALIGN	2

/*
 * re(4) hardware ip4csum-tx could be mangled with 28 bytes or less IP packets.
 */
#define	RL_IP4CSUMTX_MINLEN	28
#define	RL_IP4CSUMTX_PADLEN	(ETHER_HDR_LEN + RL_IP4CSUMTX_MINLEN)

struct rl_chain_data {
	uint16_t		cur_rx;
	uint8_t			*rl_rx_buf;
	uint8_t			*rl_rx_buf_ptr;

struct mbuf		*rl_tx_chain[RL_TX_LIST_CNT];
	bus_dmamap_t		rl_tx_dmamap[RL_TX_LIST_CNT];
	bus_dma_tag_t		rl_tx_tag;
	bus_dma_tag_t		rl_rx_tag;
	bus_dmamap_t		rl_rx_dmamap;
	bus_addr_t		rl_rx_buf_paddr;
	uint8_t			last_tx;
	uint8_t			cur_tx;
};

#define	RL_INC(x)		(x = (x + 1) % RL_TX_LIST_CNT)
#define	RL_CUR_TXADDR(x)	((x->rl_cdata.cur_tx * 4) + RL_TXADDR0)
#define	RL_CUR_TXSTAT(x)	((x->rl_cdata.cur_tx * 4) + RL_TXSTAT0)
#define	RL_CUR_TXMBUF(x)	(x->rl_cdata.rl_tx_chain[x->rl_cdata.cur_tx])
#define	RL_CUR_DMAMAP(x)	(x->rl_cdata.rl_tx_dmamap[x->rl_cdata.cur_tx])
#define	RL_LAST_TXADDR(x)	((x->rl_cdata.last_tx * 4) + RL_TXADDR0)
#define	RL_LAST_TXSTAT(x)	((x->rl_cdata.last_tx * 4) + RL_TXSTAT0)
#define	RL_LAST_TXMBUF(x)	(x->rl_cdata.rl_tx_chain[x->rl_cdata.last_tx])
#define	RL_LAST_DMAMAP(x)	(x->rl_cdata.rl_tx_dmamap[x->rl_cdata.last_tx])

struct rl_type {
	uint16_t		rl_vid;
	uint16_t		rl_did;
	int			rl_basetype;
	const char		*rl_name;
};

struct rl_hwrev {
	uint32_t		rl_rev;
	int			rl_type;
	const char		*rl_desc;
	int			rl_max_mtu;
};

#define	RL_8129			1
#define	RL_8139			2
#define	RL_8139CPLUS		3
#define	RL_8169			4

#define	RL_ISCPLUS(x)		((x)->rl_type == RL_8139CPLUS ||	\
				 (x)->rl_type == RL_8169)

/*
 * The 8139C+ and 8160 gigE chips support descriptor-based TX
 * and RX. In fact, they even support TCP large send. Descriptors
 * must be allocated in contiguous blocks that are aligned on a
 * 256-byte boundary. The rings can hold a maximum of 64 descriptors.
 */

/*
 * RX/TX descriptor definition. When large send mode is enabled, the
 * lower 11 bits of the TX rl_cmdstat word are used to hold the MSS, and
 * the checksum offload bits are disabled. The structure layout is
 * the same for RX and TX descriptors
 */
struct rl_desc {
	uint32_t		rl_cmdstat;
	uint32_t		rl_vlanctl;
	uint32_t		rl_bufaddr_lo;
	uint32_t		rl_bufaddr_hi;
};

#define	RL_TDESC_CMD_FRAGLEN	0x0000FFFF
#define	RL_TDESC_CMD_TCPCSUM	0x00010000	/* TCP checksum enable */
#define	RL_TDESC_CMD_UDPCSUM	0x00020000	/* UDP checksum enable */
#define	RL_TDESC_CMD_IPCSUM	0x00040000	/* IP header checksum enable */
#define	RL_TDESC_CMD_MSSVAL	0x07FF0000	/* Large send MSS value */
#define	RL_TDESC_CMD_MSSVAL_SHIFT	16	/* Large send MSS value shift */
#define	RL_TDESC_CMD_LGSEND	0x08000000	/* TCP large send enb */
#define	RL_TDESC_CMD_EOF	0x10000000	/* end of frame marker */
#define	RL_TDESC_CMD_SOF	0x20000000	/* start of frame marker */
#define	RL_TDESC_CMD_EOR	0x40000000	/* end of ring marker */
#define	RL_TDESC_CMD_OWN	0x80000000	/* chip owns descriptor */

#define	RL_TDESC_VLANCTL_TAG	0x00020000	/* Insert VLAN tag */
#define	RL_TDESC_VLANCTL_DATA	0x0000FFFF	/* TAG data */
/* RTL8168C/RTL8168CP/RTL8111C/RTL8111CP */
#define	RL_TDESC_CMD_UDPCSUMV2	0x80000000
#define	RL_TDESC_CMD_TCPCSUMV2	0x40000000
#define	RL_TDESC_CMD_IPCSUMV2	0x20000000
#define	RL_TDESC_CMD_MSSVALV2	0x1FFC0000
#define	RL_TDESC_CMD_MSSVALV2_SHIFT	18

/*
 * Error bits are valid only on the last descriptor of a frame
 * (i.e. RL_TDESC_CMD_EOF == 1)
 */
#define	RL_TDESC_STAT_COLCNT	0x000F0000	/* collision count */
#define	RL_TDESC_STAT_EXCESSCOL	0x00100000	/* excessive collisions */
#define	RL_TDESC_STAT_LINKFAIL	0x00200000	/* link faulure */
#define	RL_TDESC_STAT_OWINCOL	0x00400000	/* out-of-window collision */
#define	RL_TDESC_STAT_TXERRSUM	0x00800000	/* transmit error summary */
#define	RL_TDESC_STAT_UNDERRUN	0x02000000	/* TX underrun occurred */
#define	RL_TDESC_STAT_OWN	0x80000000

/*
 * RX descriptor cmd/vlan definitions
 */
#define	RL_RDESC_CMD_EOR	0x40000000
#define	RL_RDESC_CMD_OWN	0x80000000
#define	RL_RDESC_CMD_BUFLEN	0x00001FFF

#define	RL_RDESC_STAT_OWN	0x80000000
#define	RL_RDESC_STAT_EOR	0x40000000
#define	RL_RDESC_STAT_SOF	0x20000000
#define	RL_RDESC_STAT_EOF	0x10000000
#define	RL_RDESC_STAT_FRALIGN	0x08000000	/* frame alignment error */
#define	RL_RDESC_STAT_MCAST	0x04000000	/* multicast pkt received */
#define	RL_RDESC_STAT_UCAST	0x02000000	/* unicast pkt received */
#define	RL_RDESC_STAT_BCAST	0x01000000	/* broadcast pkt received */
#define	RL_RDESC_STAT_BUFOFLOW	0x00800000	/* out of buffer space */
#define	RL_RDESC_STAT_FIFOOFLOW	0x00400000	/* FIFO overrun */
#define	RL_RDESC_STAT_GIANT	0x00200000	/* pkt > 4096 bytes */
#define	RL_RDESC_STAT_RXERRSUM	0x00100000	/* RX error summary */
#define	RL_RDESC_STAT_RUNT	0x00080000	/* runt packet received */
#define	RL_RDESC_STAT_CRCERR	0x00040000	/* CRC error */
#define	RL_RDESC_STAT_PROTOID	0x00030000	/* Protocol type */
#define	RL_RDESC_STAT_UDP	0x00020000	/* UDP, 8168C/CP, 8111C/CP */
#define	RL_RDESC_STAT_TCP	0x00010000	/* TCP, 8168C/CP, 8111C/CP */
#define	RL_RDESC_STAT_IPSUMBAD	0x00008000	/* IP header checksum bad */
#define	RL_RDESC_STAT_UDPSUMBAD	0x00004000	/* UDP checksum bad */
#define	RL_RDESC_STAT_TCPSUMBAD	0x00002000	/* TCP checksum bad */
#define	RL_RDESC_STAT_FRAGLEN	0x00001FFF	/* RX'ed frame/frag len */
#define	RL_RDESC_STAT_GFRAGLEN	0x00003FFF	/* RX'ed frame/frag len */
#define	RL_RDESC_STAT_ERRS	(RL_RDESC_STAT_GIANT|RL_RDESC_STAT_RUNT| \
				 RL_RDESC_STAT_CRCERR)

#define	RL_RDESC_VLANCTL_TAG	0x00010000	/* VLAN tag available
						   (rl_vlandata valid)*/
#define	RL_RDESC_VLANCTL_DATA	0x0000FFFF	/* TAG data */
/* RTL8168C/RTL8168CP/RTL8111C/RTL8111CP */
#define	RL_RDESC_IPV6		0x80000000
#define	RL_RDESC_IPV4		0x40000000

#define	RL_PROTOID_NONIP	0x00000000
#define	RL_PROTOID_TCPIP	0x00010000
#define	RL_PROTOID_UDPIP	0x00020000
#define	RL_PROTOID_IP		0x00030000
#define	RL_TCPPKT(x)		(((x) & RL_RDESC_STAT_PROTOID) == \
				 RL_PROTOID_TCPIP)
#define	RL_UDPPKT(x)		(((x) & RL_RDESC_STAT_PROTOID) == \
				 RL_PROTOID_UDPIP)

/*
 * Statistics counter structure (8139C+ and 8169 only)
 */
struct rl_stats {
	uint64_t		rl_tx_pkts;
	uint64_t		rl_rx_pkts;
	uint64_t		rl_tx_errs;
	uint32_t		rl_rx_errs;
	uint16_t		rl_missed_pkts;
	uint16_t		rl_rx_framealign_errs;
	uint32_t		rl_tx_onecoll;
	uint32_t		rl_tx_multicolls;
	uint64_t		rl_rx_ucasts;
	uint64_t		rl_rx_bcasts;
	uint32_t		rl_rx_mcasts;
	uint16_t		rl_tx_aborts;
	uint16_t		rl_rx_underruns;
};

/*
 * Rx/Tx descriptor parameters (8139C+ and 8169 only)
 *
 * 8139C+
 *  Number of descriptors supported : up to 64
 *  Descriptor alignment : 256 bytes
 *  Tx buffer : At least 4 bytes in length.
 *  Rx buffer : At least 8 bytes in length and 8 bytes alignment required.
 *
 * 8169
 *  Number of descriptors supported : up to 1024
 *  Descriptor alignment : 256 bytes
 *  Tx buffer : At least 4 bytes in length.
 *  Rx buffer : At least 8 bytes in length and 8 bytes alignment required.
 */
#ifndef	__NO_STRICT_ALIGNMENT
#define	RE_FIXUP_RX	1
#endif

#define	RL_8169_TX_DESC_CNT	256
#define	RL_8169_RX_DESC_CNT	256
#define	RL_8139_TX_DESC_CNT	64
#define	RL_8139_RX_DESC_CNT	64
#define	RL_TX_DESC_CNT		RL_8169_TX_DESC_CNT
#define	RL_RX_DESC_CNT		RL_8169_RX_DESC_CNT
#define	RL_RX_JUMBO_DESC_CNT	RL_RX_DESC_CNT
#define	RL_NTXSEGS		35

#define	RL_RING_ALIGN		256
#define	RL_DUMP_ALIGN		64
#define	RL_IFQ_MAXLEN		512
#define	RL_TX_DESC_NXT(sc,x)	((x + 1) & ((sc)->rl_ldata.rl_tx_desc_cnt - 1))
#define	RL_TX_DESC_PRV(sc,x)	((x - 1) & ((sc)->rl_ldata.rl_tx_desc_cnt - 1))
#define	RL_RX_DESC_NXT(sc,x)	((x + 1) & ((sc)->rl_ldata.rl_rx_desc_cnt - 1))
#define	RL_OWN(x)		(le32toh((x)->rl_cmdstat) & RL_RDESC_STAT_OWN)
#define	RL_RXBYTES(x)		(le32toh((x)->rl_cmdstat) & sc->rl_rxlenmask)
#define	RL_PKTSZ(x)		((x)/* >> 3*/)
#ifdef RE_FIXUP_RX
#define	RE_ETHER_ALIGN	sizeof(uint64_t)
#define	RE_RX_DESC_BUFLEN	(MCLBYTES - RE_ETHER_ALIGN)
#else
#define	RE_ETHER_ALIGN	0
#define	RE_RX_DESC_BUFLEN	MCLBYTES
#endif

#define	RL_MSI_MESSAGES	1

#define	RL_ADDR_LO(y)		((uint64_t) (y) & 0xFFFFFFFF)
#define	RL_ADDR_HI(y)		((uint64_t) (y) >> 32)

/*
 * The number of bits reserved for MSS in RealTek controllers is
 * 11bits. This limits the maximum interface MTU size in TSO case
 * as upper stack should not generate TCP segments with MSS greater
 * than the limit.
 */
#define	RL_TSO_MTU		(2047 - ETHER_HDR_LEN - ETHER_CRC_LEN)

/* see comment in dev/re/if_re.c */
#define	RL_JUMBO_FRAMELEN	7440
#define	RL_JUMBO_MTU		\
	(RL_JUMBO_FRAMELEN-ETHER_VLAN_ENCAP_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
#define	RL_JUMBO_MTU_6K		\
	((6 * 1024) - ETHER_VLAN_ENCAP_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN)
#define	RL_JUMBO_MTU_9K		\
	((9 * 1024) - ETHER_VLAN_ENCAP_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN)
#define	RL_MTU			\
	(ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN)

struct rl_txdesc {
	struct mbuf		*tx_m;
	bus_dmamap_t		tx_dmamap;
};

struct rl_rxdesc {
	struct mbuf		*rx_m;
	bus_dmamap_t		rx_dmamap;
	bus_size_t		rx_size;
};

struct rl_list_data {
	struct rl_txdesc	rl_tx_desc[RL_TX_DESC_CNT];
	struct rl_rxdesc	rl_rx_desc[RL_RX_DESC_CNT];
	struct rl_rxdesc	rl_jrx_desc[RL_RX_JUMBO_DESC_CNT];
	int			rl_tx_desc_cnt;
	int			rl_rx_desc_cnt;
	int			rl_tx_prodidx;
	int			rl_rx_prodidx;
	int			rl_tx_considx;
	int			rl_tx_free;
	bus_dma_tag_t		rl_tx_mtag;	/* mbuf TX mapping tag */
	bus_dma_tag_t		rl_rx_mtag;	/* mbuf RX mapping tag */
	bus_dma_tag_t		rl_jrx_mtag;	/* mbuf RX mapping tag */
	bus_dmamap_t		rl_rx_sparemap;
	bus_dmamap_t		rl_jrx_sparemap;
	bus_dma_tag_t		rl_stag;	/* stats mapping tag */
	bus_dmamap_t		rl_smap;	/* stats map */
	struct rl_stats		*rl_stats;
	bus_addr_t		rl_stats_addr;
	bus_dma_tag_t		rl_rx_list_tag;
	bus_dmamap_t		rl_rx_list_map;
	struct rl_desc		*rl_rx_list;
	bus_addr_t		rl_rx_list_addr;
	bus_dma_tag_t		rl_tx_list_tag;
	bus_dmamap_t		rl_tx_list_map;
	struct rl_desc		*rl_tx_list;
	bus_addr_t		rl_tx_list_addr;
};

enum rl_twist { DONE, CHK_LINK, FIND_ROW, SET_PARAM, RECHK_LONG, RETUNE };

struct rl_softc {
	struct ifnet		*rl_ifp;	/* interface info */
	bus_space_handle_t	rl_bhandle;	/* bus space handle */
	bus_space_tag_t		rl_btag;	/* bus space tag */
	device_t		rl_dev;
	struct resource		*rl_res;
	int			rl_res_id;
	int			rl_res_type;
	struct resource		*rl_res_pba;
	struct resource		*rl_irq[RL_MSI_MESSAGES];
	void			*rl_intrhand[RL_MSI_MESSAGES];
	device_t		rl_miibus;
	bus_dma_tag_t		rl_parent_tag;
	uint8_t			rl_type;
	const struct rl_hwrev	*rl_hwrev;
	uint32_t		rl_macrev;
	int			rl_eecmd_read;
	int			rl_eewidth;
	int			rl_expcap;
	int			rl_txthresh;
	bus_size_t		rl_cfg0;
	bus_size_t		rl_cfg1;
	bus_size_t		rl_cfg2;
	bus_size_t		rl_cfg3;
	bus_size_t		rl_cfg4;
	bus_size_t		rl_cfg5;
	struct rl_chain_data	rl_cdata;
	struct rl_list_data	rl_ldata;
	struct callout		rl_stat_callout;
	int			rl_watchdog_timer;
	struct mtx		rl_mtx;
	struct mbuf		*rl_head;
	struct mbuf		*rl_tail;
	uint32_t		rl_rxlenmask;
	int			rl_testmode;
	int			rl_if_flags;
	int			rl_twister_enable;
	enum rl_twist		rl_twister;
	int			rl_twist_row;
	int			rl_twist_col;
	int			suspended;	/* 0 = normal  1 = suspended */
#ifdef DEVICE_POLLING
	int			rxcycles;
#endif

struct task		rl_inttask;

int			rl_txstart;
	int			rl_int_rx_act;
	int			rl_int_rx_mod;
	uint32_t		rl_flags;
#define	RL_FLAG_MSI		0x00000001
#define	RL_FLAG_AUTOPAD		0x00000002
#define	RL_FLAG_PHYWAKE_PM	0x00000004
#define	RL_FLAG_PHYWAKE		0x00000008
#define	RL_FLAG_JUMBOV2		0x00000010
#define	RL_FLAG_PAR		0x00000020
#define	RL_FLAG_DESCV2		0x00000040
#define	RL_FLAG_MACSTAT		0x00000080
#define	RL_FLAG_FASTETHER	0x00000100
#define	RL_FLAG_CMDSTOP		0x00000200
#define	RL_FLAG_MACRESET	0x00000400
#define	RL_FLAG_MSIX		0x00000800
#define	RL_FLAG_WOLRXENB	0x00001000
#define	RL_FLAG_MACSLEEP	0x00002000
#define	RL_FLAG_WAIT_TXPOLL	0x00004000
#define	RL_FLAG_CMDSTOP_WAIT_TXQ	0x00008000
#define	RL_FLAG_WOL_MANLINK	0x00010000
#define	RL_FLAG_EARLYOFF	0x00020000
#define	RL_FLAG_8168G_PLUS	0x00040000
#define	RL_FLAG_PCIE		0x40000000
#define	RL_FLAG_LINK		0x80000000
};

#define	RL_LOCK(_sc)		mtx_lock(&(_sc)->rl_mtx)
#define	RL_UNLOCK(_sc)		mtx_unlock(&(_sc)->rl_mtx)
#define	RL_LOCK_ASSERT(_sc)	mtx_assert(&(_sc)->rl_mtx, MA_OWNED)

/*
 * register space access macros
 */
#define	CSR_WRITE_STREAM_4(sc, reg, val)	\
	bus_space_write_stream_4(sc->rl_btag, sc->rl_bhandle, reg, val)
#define	CSR_WRITE_4(sc, reg, val)	\
	bus_space_write_4(sc->rl_btag, sc->rl_bhandle, reg, val)
#define	CSR_WRITE_2(sc, reg, val)	\
	bus_space_write_2(sc->rl_btag, sc->rl_bhandle, reg, val)
#define	CSR_WRITE_1(sc, reg, val)	\
	bus_space_write_1(sc->rl_btag, sc->rl_bhandle, reg, val)

#define	CSR_READ_4(sc, reg)		\
	bus_space_read_4(sc->rl_btag, sc->rl_bhandle, reg)
#define	CSR_READ_2(sc, reg)		\
	bus_space_read_2(sc->rl_btag, sc->rl_bhandle, reg)
#define	CSR_READ_1(sc, reg)		\
	bus_space_read_1(sc->rl_btag, sc->rl_bhandle, reg)

#define	CSR_BARRIER(sc, reg, length, flags)				\
	bus_space_barrier(sc->rl_btag, sc->rl_bhandle, reg, length, flags)

#define	CSR_SETBIT_1(sc, offset, val)		\
	CSR_WRITE_1(sc, offset, CSR_READ_1(sc, offset) | (val))

#define	CSR_CLRBIT_1(sc, offset, val)		\
	CSR_WRITE_1(sc, offset, CSR_READ_1(sc, offset) & ~(val))

#define	CSR_SETBIT_2(sc, offset, val)		\
	CSR_WRITE_2(sc, offset, CSR_READ_2(sc, offset) | (val))

#define	CSR_CLRBIT_2(sc, offset, val)		\
	CSR_WRITE_2(sc, offset, CSR_READ_2(sc, offset) & ~(val))

#define	CSR_SETBIT_4(sc, offset, val)		\
	CSR_WRITE_4(sc, offset, CSR_READ_4(sc, offset) | (val))

#define	CSR_CLRBIT_4(sc, offset, val)		\
	CSR_WRITE_4(sc, offset, CSR_READ_4(sc, offset) & ~(val))

#define	RL_TIMEOUT		1000
#define	RL_PHY_TIMEOUT		2000

/*
 * General constants that are fun to know.
 *
 * RealTek PCI vendor ID
 */
#define	RT_VENDORID				0x10EC

/*
 * RealTek chip device IDs.
 */
#define	RT_DEVICEID_8139D			0x8039
#define	RT_DEVICEID_8129			0x8129
#define	RT_DEVICEID_8101E			0x8136
#define	RT_DEVICEID_8138			0x8138
#define	RT_DEVICEID_8139			0x8139
#define	RT_DEVICEID_8169SC			0x8167
#define	RT_DEVICEID_8161			0x8161
#define	RT_DEVICEID_8168			0x8168
#define	RT_DEVICEID_8169			0x8169
#define	RT_DEVICEID_8100			0x8100

#define	RT_REVID_8139CPLUS			0x20

/*
 * Accton PCI vendor ID
 */
#define	ACCTON_VENDORID				0x1113

/*
 * Accton MPX 5030/5038 device ID.
 */
#define	ACCTON_DEVICEID_5030			0x1211

/*
 * Nortel PCI vendor ID
 */
#define	NORTEL_VENDORID				0x126C

/*
 * Delta Electronics Vendor ID.
 */
#define	DELTA_VENDORID				0x1500

/*
 * Delta device IDs.
 */
#define	DELTA_DEVICEID_8139			0x1360

/*
 * Addtron vendor ID.
 */
#define	ADDTRON_VENDORID			0x4033

/*
 * Addtron device IDs.
 */
#define	ADDTRON_DEVICEID_8139			0x1360

/*
 * D-Link vendor ID.
 */
#define	DLINK_VENDORID				0x1186

/*
 * D-Link DFE-530TX+ device ID
 */
#define	DLINK_DEVICEID_530TXPLUS		0x1300

/*
 * D-Link DFE-520TX rev. C1 device ID
 */
#define	DLINK_DEVICEID_520TX_REVC1		0x4200

/*
 * D-Link DFE-5280T device ID
 */
#define	DLINK_DEVICEID_528T			0x4300
#define	DLINK_DEVICEID_530T_REVC		0x4302

/*
 * D-Link DFE-690TXD device ID
 */
#define	DLINK_DEVICEID_690TXD			0x1340

/*
 * Corega K.K vendor ID
 */
#define	COREGA_VENDORID				0x1259

/*
 * Corega FEther CB-TXD device ID
 */
#define	COREGA_DEVICEID_FETHERCBTXD		0xa117

/*
 * Corega FEtherII CB-TXD device ID
 */
#define	COREGA_DEVICEID_FETHERIICBTXD		0xa11e

/*
 * Corega CG-LAPCIGT device ID
 */
#define	COREGA_DEVICEID_CGLAPCIGT		0xc107

/*
 * Linksys vendor ID
 */
#define	LINKSYS_VENDORID			0x1737

/*
 * Linksys EG1032 device ID
 */
#define	LINKSYS_DEVICEID_EG1032			0x1032

/*
 * Linksys EG1032 rev 3 sub-device ID
 */
#define	LINKSYS_SUBDEVICE_EG1032_REV3		0x0024

/*
 * Peppercon vendor ID
 */
#define	PEPPERCON_VENDORID			0x1743

/*
 * Peppercon ROL-F device ID
 */
#define	PEPPERCON_DEVICEID_ROLF			0x8139

/*
 * Planex Communications, Inc. vendor ID
 */
#define	PLANEX_VENDORID				0x14ea

/*
 * Planex FNW-3603-TX device ID
 */
#define	PLANEX_DEVICEID_FNW3603TX		0xab06

/*
 * Planex FNW-3800-TX device ID
 */
#define	PLANEX_DEVICEID_FNW3800TX		0xab07

/*
 * LevelOne vendor ID
 */
#define	LEVEL1_VENDORID				0x018A

/*
 * LevelOne FPC-0106TX devide ID
 */
#define	LEVEL1_DEVICEID_FPC0106TX		0x0106

/*
 * Compaq vendor ID
 */
#define	CP_VENDORID				0x021B

/*
 * Edimax vendor ID
 */
#define	EDIMAX_VENDORID				0x13D1

/*
 * Edimax EP-4103DL cardbus device ID
 */
#define	EDIMAX_DEVICEID_EP4103DL		0xAB06

/* US Robotics vendor ID */

#define	USR_VENDORID		0x16EC

/* US Robotics 997902 device ID */

#define	USR_DEVICEID_997902	0x0116

/* 
 * NCube vendor ID
 */
#define	NCUBE_VENDORID		0x10FF

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