Create releng/7.2 from stable/7 in preparation for 7.2-RELEASE.

[FreeBSD/releng/7.2.git] / sys / dev / gem / if_gemreg.h

/*-
 * Copyright (C) 2001 Eduardo Horvath.
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR  ``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 THE AUTHOR  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.
 *
 *      from: NetBSD: gemreg.h,v 1.9 2006/11/24 13:01:07 martin Exp
 *
 * $FreeBSD$
 */

#ifndef _IF_GEMREG_H
#define _IF_GEMREG_H

/* Register definitions for Sun GEM gigabit ethernet */

/*
 * First bank: this registers live at the start of the PCI
 * mapping, and at the start of the second bank of the SBus
 * version.
 */
#define GEM_SEB_STATE           0x0000  /* SEB state reg, R/O */
#define GEM_CONFIG              0x0004  /* config reg */
#define GEM_STATUS              0x000c  /* status reg */
/* Note: Reading the status reg clears bits 0-6. */
#define GEM_INTMASK             0x0010
#define GEM_INTACK              0x0014  /* Interrupt acknowledge, W/O */
#define GEM_STATUS_ALIAS        0x001c

/*
 * Second bank: this registers live at offset 0x1000 of the PCI
 * mapping, and at the start of the first bank of the SBus
 * version.
 */
#define GEM_PCI_BANK2_OFFSET    0x1000
#define GEM_PCI_BANK2_SIZE      0x14
/* This is the same as the GEM_STATUS reg but reading it does not clear bits. */
#define GEM_ERROR_STATUS        0x0000  /* PCI error status R/C */
#define GEM_ERROR_MASK          0x0004
#define GEM_SBUS_CONFIG         0x0004
#define GEM_BIF_CONFIG          0x0008  /* BIF config reg */
#define GEM_BIF_DIAG            0x000c
#define GEM_RESET               0x0010  /* Software reset register */


/* Bits in GEM_SEB register */
#define GEM_SEB_ARB             0x000000002     /* Arbitration status */
#define GEM_SEB_RXWON           0x000000004

/* Bits in GEM_SBUS_CONFIG register */
#define GEM_SBUS_CFG_BMODE64    0x00000008
#define GEM_SBUS_CFG_PARITY     0x00000200

/* Bits in GEM_CONFIG register */
#define GEM_CONFIG_BURST_64     0x000000000     /* maximum burst size 64KB */
#define GEM_CONFIG_BURST_INF    0x000000001     /* infinite for entire packet */
#define GEM_CONFIG_TXDMA_LIMIT  0x00000003e
#define GEM_CONFIG_RXDMA_LIMIT  0x0000007c0
/* GEM_CONFIG_RONPAULBIT and GEM_CONFIG_BUG2FIX are Apple only. */
#define GEM_CONFIG_RONPAULBIT   0x000000800     /* after infinite burst use */
                                                /* memory read multiple for */
                                                /* PCI commands */
#define GEM_CONFIG_BUG2FIX      0x000001000     /* fix RX hang after overflow */

#define GEM_CONFIG_TXDMA_LIMIT_SHIFT    1
#define GEM_CONFIG_RXDMA_LIMIT_SHIFT    6


/* Top part of GEM_STATUS has TX completion information */
#define GEM_STATUS_TX_COMPL     0xfff800000     /* TX completion reg. */


/*
 * Interrupt bits, for both the GEM_STATUS and GEM_INTMASK regs
 * Bits 0-6 auto-clear when read.
 */
#define GEM_INTR_TX_INTME       0x000000001     /* Frame w/INTME bit set sent */
#define GEM_INTR_TX_EMPTY       0x000000002     /* TX ring empty */
#define GEM_INTR_TX_DONE        0x000000004     /* TX complete */
#define GEM_INTR_RX_DONE        0x000000010     /* Got a packet */
#define GEM_INTR_RX_NOBUF       0x000000020
#define GEM_INTR_RX_TAG_ERR     0x000000040
#define GEM_INTR_PERR           0x000000080     /* Parity error */
#define GEM_INTR_PCS            0x000002000     /* Physical Code Sub-layer */
#define GEM_INTR_TX_MAC         0x000004000
#define GEM_INTR_RX_MAC         0x000008000
#define GEM_INTR_MAC_CONTROL    0x000010000     /* MAC control interrupt */
#define GEM_INTR_MIF            0x000020000
#define GEM_INTR_BERR           0x000040000     /* Bus error interrupt */
#define GEM_INTR_BITS   "\177\020"                                      \
                        "b\0INTME\0b\1TXEMPTY\0b\2TXDONE\0"             \
                        "b\4RXDONE\0b\5RXNOBUF\0b\6RX_TAG_ERR\0"        \
                        "b\xdPCS\0b\xeTXMAC\0b\xfRXMAC\0"               \
                        "b\x10MAC_CONTROL\0b\x11MIF\0b\x12IBERR\0\0"


/* GEM_ERROR_STATUS and GEM_ERROR_MASK PCI error bits */
#define GEM_ERROR_STAT_BADACK   0x000000001     /* No ACK64# */
#define GEM_ERROR_STAT_DTRTO    0x000000002     /* Delayed xaction timeout */
#define GEM_ERROR_STAT_OTHERS   0x000000004
#define GEM_ERROR_BITS          "\177\020b\0ACKBAD\0b\1DTRTO\0b\2OTHER\0\0"


/* GEM_BIF_CONFIG register bits */
#define GEM_BIF_CONFIG_SLOWCLK  0x000000001     /* Parity error timing */
#define GEM_BIF_CONFIG_HOST_64  0x000000002     /* 64-bit host */
#define GEM_BIF_CONFIG_B64D_DIS 0x000000004     /* no 64-bit data cycle */
#define GEM_BIF_CONFIG_M66EN    0x000000008
#define GEM_BIF_CONFIG_BITS     "\177\020b\0SLOWCLK\0b\1HOST64\0"       \
                                "b\2B64DIS\0b\3M66EN\0\0"


/* GEM_RESET register bits -- TX and RX self clear when complete. */
#define GEM_RESET_TX            0x000000001     /* Reset TX half */
#define GEM_RESET_RX            0x000000002     /* Reset RX half */
#define GEM_RESET_RSTOUT        0x000000004     /* Force PCI RSTOUT# */


/* The rest of the registers live in the first bank again. */
/* GEM TX DMA registers */
#define GEM_TX_KICK             0x2000          /* Write last valid desc + 1 */
#define GEM_TX_CONFIG           0x2004
#define GEM_TX_RING_PTR_LO      0x2008
#define GEM_TX_RING_PTR_HI      0x200c

#define GEM_TX_FIFO_WR_PTR      0x2014          /* FIFO write pointer */
#define GEM_TX_FIFO_SDWR_PTR    0x2018          /* FIFO shadow write pointer */
#define GEM_TX_FIFO_RD_PTR      0x201c          /* FIFO read pointer */
#define GEM_TX_FIFO_SDRD_PTR    0x2020          /* FIFO shadow read pointer */
#define GEM_TX_FIFO_PKT_CNT     0x2024          /* FIFO packet counter */

#define GEM_TX_STATE_MACHINE    0x2028          /* ETX state machine reg */
#define GEM_TX_DATA_PTR_LO      0x2030
#define GEM_TX_DATA_PTR_HI      0x2034

#define GEM_TX_COMPLETION       0x2100
#define GEM_TX_FIFO_ADDRESS     0x2104
#define GEM_TX_FIFO_TAG         0x2108
#define GEM_TX_FIFO_DATA_LO     0x210c
#define GEM_TX_FIFO_DATA_HI_T1  0x2110
#define GEM_TX_FIFO_DATA_HI_T0  0x2114
#define GEM_TX_FIFO_SIZE        0x2118
#define GEM_TX_DEBUG            0x3028


/* GEM_TX_CONFIG register bits */
#define GEM_TX_CONFIG_TXDMA_EN  0x00000001      /* TX DMA enable */
#define GEM_TX_CONFIG_TXRING_SZ 0x0000001e      /* TX ring size */
#define GEM_TX_CONFIG_TXFIFO_TH 0x001ffc00      /* TX fifo threshold */
#define GEM_TX_CONFIG_PACED     0x00200000      /* TX_all_int modifier */

#define GEM_RING_SZ_32          (0<<1)  /* 32 descriptors */
#define GEM_RING_SZ_64          (1<<1)
#define GEM_RING_SZ_128         (2<<1)
#define GEM_RING_SZ_256         (3<<1)
#define GEM_RING_SZ_512         (4<<1)
#define GEM_RING_SZ_1024        (5<<1)
#define GEM_RING_SZ_2048        (6<<1)
#define GEM_RING_SZ_4096        (7<<1)
#define GEM_RING_SZ_8192        (8<<1)


/* GEM_TX_COMPLETION register bits */
#define GEM_TX_COMPLETION_MASK  0x00001fff      /* # of last descriptor */


/* GEM RX DMA registers */
#define GEM_RX_CONFIG           0x4000
#define GEM_RX_RING_PTR_LO      0x4004          /* 64-bits unaligned GAK! */
#define GEM_RX_RING_PTR_HI      0x4008          /* 64-bits unaligned GAK! */

#define GEM_RX_FIFO_WR_PTR      0x400c          /* FIFO write pointer */
#define GEM_RX_FIFO_SDWR_PTR    0x4010          /* FIFO shadow write pointer */
#define GEM_RX_FIFO_RD_PTR      0x4014          /* FIFO read pointer */
#define GEM_RX_FIFO_PKT_CNT     0x4018          /* FIFO packet counter */

#define GEM_RX_STATE_MACHINE    0x401c          /* ERX state machine reg */
#define GEM_RX_PAUSE_THRESH     0x4020

#define GEM_RX_DATA_PTR_LO      0x4024          /* ERX state machine reg */
#define GEM_RX_DATA_PTR_HI      0x4028          /* Damn thing is unaligned */

#define GEM_RX_KICK             0x4100          /* Write last valid desc + 1 */
#define GEM_RX_COMPLETION       0x4104          /* First pending desc */
#define GEM_RX_BLANKING         0x4108          /* Interrupt blanking reg */

#define GEM_RX_FIFO_ADDRESS     0x410c
#define GEM_RX_FIFO_TAG         0x4110
#define GEM_RX_FIFO_DATA_LO     0x4114
#define GEM_RX_FIFO_DATA_HI_T1  0x4118
#define GEM_RX_FIFO_DATA_HI_T0  0x411c
#define GEM_RX_FIFO_SIZE        0x4120


/* GEM_RX_CONFIG register bits */
#define GEM_RX_CONFIG_RXDMA_EN  0x00000001      /* RX DMA enable */
#define GEM_RX_CONFIG_RXRING_SZ 0x0000001e      /* RX ring size */
#define GEM_RX_CONFIG_BATCH_DIS 0x00000020      /* desc batching disable */
#define GEM_RX_CONFIG_FBOFF     0x00001c00      /* first byte offset */
#define GEM_RX_CONFIG_CXM_START 0x000fe000      /* cksum start offset bytes */
#define GEM_RX_CONFIG_FIFO_THRS 0x07000000      /* fifo threshold size */

#define GEM_THRSH_64    0
#define GEM_THRSH_128   1
#define GEM_THRSH_256   2
#define GEM_THRSH_512   3
#define GEM_THRSH_1024  4
#define GEM_THRSH_2048  5

#define GEM_RX_CONFIG_FIFO_THRS_SHIFT   24
#define GEM_RX_CONFIG_FBOFF_SHFT        10
#define GEM_RX_CONFIG_CXM_START_SHFT    13


/* GEM_RX_PAUSE_THRESH register bits -- sizes in multiples of 64 bytes */
#define GEM_RX_PTH_XOFF_THRESH  0x000001ff
#define GEM_RX_PTH_XON_THRESH   0x001ff000


/* GEM_RX_BLANKING register bits */
#define GEM_RX_BLANKING_PACKETS 0x000001ff      /* Delay intr for x packets */
#define GEM_RX_BLANKING_TIME    0x000ff000      /* Delay intr for x ticks */
#define GEM_RX_BLANKING_TIME_SHIFT 12
/* One tick is 2048 PCI clocks, or 16us at 66MHz */


/* GEM_MAC registers */
#define GEM_MAC_TXRESET         0x6000          /* Store 1, cleared when done */
#define GEM_MAC_RXRESET         0x6004          /* ditto */
#define GEM_MAC_SEND_PAUSE_CMD  0x6008
#define GEM_MAC_TX_STATUS       0x6010
#define GEM_MAC_RX_STATUS       0x6014
#define GEM_MAC_CONTROL_STATUS  0x6018          /* MAC control status reg */
#define GEM_MAC_TX_MASK         0x6020          /* TX MAC mask register */
#define GEM_MAC_RX_MASK         0x6024
#define GEM_MAC_CONTROL_MASK    0x6028
#define GEM_MAC_TX_CONFIG       0x6030
#define GEM_MAC_RX_CONFIG       0x6034
#define GEM_MAC_CONTROL_CONFIG  0x6038
#define GEM_MAC_XIF_CONFIG      0x603c
#define GEM_MAC_IPG0            0x6040          /* inter packet gap 0 */
#define GEM_MAC_IPG1            0x6044          /* inter packet gap 1 */
#define GEM_MAC_IPG2            0x6048          /* inter packet gap 2 */
#define GEM_MAC_SLOT_TIME       0x604c          /* slot time, bits 0-7 */
#define GEM_MAC_MAC_MIN_FRAME   0x6050
#define GEM_MAC_MAC_MAX_FRAME   0x6054
#define GEM_MAC_PREAMBLE_LEN    0x6058
#define GEM_MAC_JAM_SIZE        0x605c
#define GEM_MAC_ATTEMPT_LIMIT   0x6060
#define GEM_MAC_CONTROL_TYPE    0x6064

#define GEM_MAC_ADDR0           0x6080          /* Normal MAC address 0 */
#define GEM_MAC_ADDR1           0x6084
#define GEM_MAC_ADDR2           0x6088
#define GEM_MAC_ADDR3           0x608c          /* Alternate MAC address 0 */
#define GEM_MAC_ADDR4           0x6090
#define GEM_MAC_ADDR5           0x6094
#define GEM_MAC_ADDR6           0x6098          /* Control MAC address 0 */
#define GEM_MAC_ADDR7           0x609c
#define GEM_MAC_ADDR8           0x60a0

#define GEM_MAC_ADDR_FILTER0    0x60a4
#define GEM_MAC_ADDR_FILTER1    0x60a8
#define GEM_MAC_ADDR_FILTER2    0x60ac
#define GEM_MAC_ADR_FLT_MASK1_2 0x60b0          /* Address filter mask 1,2 */
#define GEM_MAC_ADR_FLT_MASK0   0x60b4          /* Address filter mask 0 reg */

#define GEM_MAC_HASH0           0x60c0          /* Hash table 0 */
#define GEM_MAC_HASH1           0x60c4
#define GEM_MAC_HASH2           0x60c8
#define GEM_MAC_HASH3           0x60cc
#define GEM_MAC_HASH4           0x60d0
#define GEM_MAC_HASH5           0x60d4
#define GEM_MAC_HASH6           0x60d8
#define GEM_MAC_HASH7           0x60dc
#define GEM_MAC_HASH8           0x60e0
#define GEM_MAC_HASH9           0x60e4
#define GEM_MAC_HASH10          0x60e8
#define GEM_MAC_HASH11          0x60ec
#define GEM_MAC_HASH12          0x60f0
#define GEM_MAC_HASH13          0x60f4
#define GEM_MAC_HASH14          0x60f8
#define GEM_MAC_HASH15          0x60fc

#define GEM_MAC_NORM_COLL_CNT   0x6100          /* Normal collision counter */
#define GEM_MAC_FIRST_COLL_CNT  0x6104          /* 1st successful collision cntr */
#define GEM_MAC_EXCESS_COLL_CNT 0x6108          /* Excess collision counter */
#define GEM_MAC_LATE_COLL_CNT   0x610c          /* Late collision counter */
#define GEM_MAC_DEFER_TMR_CNT   0x6110          /* defer timer counter */
#define GEM_MAC_PEAK_ATTEMPTS   0x6114
#define GEM_MAC_RX_FRAME_COUNT  0x6118
#define GEM_MAC_RX_LEN_ERR_CNT  0x611c
#define GEM_MAC_RX_ALIGN_ERR    0x6120
#define GEM_MAC_RX_CRC_ERR_CNT  0x6124
#define GEM_MAC_RX_CODE_VIOL    0x6128
#define GEM_MAC_RANDOM_SEED     0x6130
#define GEM_MAC_MAC_STATE       0x6134          /* MAC state machine reg */


/* GEM_MAC_SEND_PAUSE_CMD register bits */
#define GEM_MAC_PAUSE_CMD_TIME  0x0000ffff
#define GEM_MAC_PAUSE_CMD_SEND  0x00010000


/* GEM_MAC_TX_STATUS and _MASK register bits */
#define GEM_MAC_TX_XMIT_DONE    0x00000001
#define GEM_MAC_TX_UNDERRUN     0x00000002
#define GEM_MAC_TX_PKT_TOO_LONG 0x00000004
#define GEM_MAC_TX_NCC_EXP      0x00000008      /* Normal collision cnt exp */
#define GEM_MAC_TX_ECC_EXP      0x00000010
#define GEM_MAC_TX_LCC_EXP      0x00000020
#define GEM_MAC_TX_FCC_EXP      0x00000040
#define GEM_MAC_TX_DEFER_EXP    0x00000080
#define GEM_MAC_TX_PEAK_EXP     0x00000100


/* GEM_MAC_RX_STATUS and _MASK register bits */
#define GEM_MAC_RX_DONE         0x00000001
#define GEM_MAC_RX_OVERFLOW     0x00000002
#define GEM_MAC_RX_FRAME_CNT    0x00000004
#define GEM_MAC_RX_ALIGN_EXP    0x00000008
#define GEM_MAC_RX_CRC_EXP      0x00000010
#define GEM_MAC_RX_LEN_EXP      0x00000020
#define GEM_MAC_RX_CVI_EXP      0x00000040      /* Code violation */


/* GEM_MAC_CONTROL_STATUS and GEM_MAC_CONTROL_MASK register bits */
#define GEM_MAC_PAUSED          0x00000001      /* Pause received */
#define GEM_MAC_PAUSE           0x00000002      /* enter pause state */
#define GEM_MAC_RESUME          0x00000004      /* exit pause state */
#define GEM_MAC_PAUSE_TIME_SLTS 0xffff0000      /* pause time in slots */
#define GEM_MAC_STATUS_BITS     "\177\020b\0PAUSED\0b\1PAUSE\0b\2RESUME\0\0"

#define GEM_MAC_PAUSE_TIME_SHFT 16
#define GEM_MAC_PAUSE_TIME(x)                                           \
        (((x) & GEM_MAC_PAUSE_TIME_SLTS) >> GEM_MAC_PAUSE_TIME_SHFT)

/* GEM_MAC_XIF_CONFIG register bits */
#define GEM_MAC_XIF_TX_MII_ENA  0x00000001      /* Enable XIF output drivers */
#define GEM_MAC_XIF_MII_LOOPBK  0x00000002      /* Enable MII loopback mode */
#define GEM_MAC_XIF_ECHO_DISABL 0x00000004      /* Disable echo */
#define GEM_MAC_XIF_GMII_MODE   0x00000008      /* Select GMII/MII mode */
#define GEM_MAC_XIF_MII_BUF_ENA 0x00000010      /* Enable MII recv buffers */
#define GEM_MAC_XIF_LINK_LED    0x00000020      /* force link LED active */
#define GEM_MAC_XIF_FDPLX_LED   0x00000040      /* force FDPLX LED active */
#define GEM_MAC_XIF_BITS        "\177\020b\0TXMIIENA\0b\1MIILOOP\0b\2NOECHO" \
                                "\0b\3GMII\0b\4MIIBUFENA\0b\5LINKLED\0" \
                                "b\6FDLED\0\0"

/*
 * GEM_MAC_SLOT_TIME register
 * The slot time is used as PAUSE time unit, value depends on whether carrier
 * extension is enabled.
 */
#define GEM_MAC_SLOT_TIME_CARR_EXTEND   0x200
#define GEM_MAC_SLOT_TIME_NORMAL        0x40

/* GEM_MAC_TX_CONFIG register bits */
#define GEM_MAC_TX_ENABLE       0x00000001      /* TX enable */
#define GEM_MAC_TX_IGN_CARRIER  0x00000002      /* Ignore carrier sense */
#define GEM_MAC_TX_IGN_COLLIS   0x00000004      /* ignore collisions */
#define GEM_MAC_TX_ENA_IPG0     0x00000008      /* extend RX-to-TX IPG */
#define GEM_MAC_TX_NGU          0x00000010      /* Never give up */
#define GEM_MAC_TX_NGU_LIMIT    0x00000020      /* Never give up limit */
#define GEM_MAC_TX_NO_BACKOFF   0x00000040
#define GEM_MAC_TX_SLOWDOWN     0x00000080
#define GEM_MAC_TX_NO_FCS       0x00000100      /* no FCS will be generated */
#define GEM_MAC_TX_CARR_EXTEND  0x00000200      /* Ena TX Carrier Extension */
/* Carrier Extension is required for half duplex Gbps operation */
#define GEM_MAC_TX_CONFIG_BITS  "\177\020" \
                                "b\0TXENA\0b\1IGNCAR\0b\2IGNCOLLIS\0" \
                                "b\3IPG0ENA\0b\4TXNGU\0b\5TXNGULIM\0" \
                                "b\6NOBKOFF\0b\7SLOWDN\0b\x8NOFCS\0" \
                                "b\x9TXCARREXT\0\0"


/* GEM_MAC_RX_CONFIG register bits */
#define GEM_MAC_RX_ENABLE       0x00000001      /* RX enable */
#define GEM_MAC_RX_STRIP_PAD    0x00000002      /* strip pad bytes */
#define GEM_MAC_RX_STRIP_CRC    0x00000004
#define GEM_MAC_RX_PROMISCUOUS  0x00000008      /* promiscuous mode */
#define GEM_MAC_RX_PROMISC_GRP  0x00000010      /* promiscuous group mode */
#define GEM_MAC_RX_HASH_FILTER  0x00000020      /* enable hash filter */
#define GEM_MAC_RX_ADDR_FILTER  0x00000040      /* enable address filter */
#define GEM_MAC_RX_ERRCHK_DIS   0x00000080      /* disable error checking */
#define GEM_MAC_RX_CARR_EXTEND  0x00000100      /* Ena RX Carrier Extension */
/*
 * Carrier Extension enables reception of packet bursts generated by
 * senders with carrier extension enabled.
 */
#define GEM_MAC_RX_CONFIG_BITS  "\177\020" \
                                "b\0RXENA\0b\1STRPAD\0b\2STRCRC\0" \
                                "b\3PROMIS\0b\4PROMISCGRP\0b\5HASHFLTR\0" \
                                "b\6ADDRFLTR\0b\7ERRCHKDIS\0b\x9TXCARREXT\0\0"


/* GEM_MAC_CONTROL_CONFIG bits */
#define GEM_MAC_CC_TX_PAUSE     0x00000001      /* send pause enabled */
#define GEM_MAC_CC_RX_PAUSE     0x00000002      /* receive pause enabled */
#define GEM_MAC_CC_PASS_PAUSE   0x00000004      /* pass pause up */
#define GEM_MAC_CC_BITS         "\177\020b\0TXPAUSE\0b\1RXPAUSE\0b\2NOPAUSE\0\0"


/* GEM MIF registers */
/* Bit bang registers use low bit only. */
#define GEM_MIF_BB_CLOCK        0x6200          /* bit bang clock */
#define GEM_MIF_BB_DATA         0x6204          /* bit bang data */
#define GEM_MIF_BB_OUTPUT_ENAB  0x6208
#define GEM_MIF_FRAME           0x620c          /* MIF frame - ctl and data */
#define GEM_MIF_CONFIG          0x6210
#define GEM_MIF_INTERRUPT_MASK  0x6214
#define GEM_MIF_BASIC_STATUS    0x6218
#define GEM_MIF_STATE_MACHINE   0x621c


/* GEM_MIF_FRAME bits */
#define GEM_MIF_FRAME_DATA      0x0000ffff
#define GEM_MIF_FRAME_TA0       0x00010000      /* TA bit, 1 for completion */
#define GEM_MIF_FRAME_TA1       0x00020000      /* TA bits */
#define GEM_MIF_FRAME_REG_ADDR  0x007c0000
#define GEM_MIF_FRAME_PHY_ADDR  0x0f800000      /* phy address, should be 0 */
#define GEM_MIF_FRAME_OP        0x30000000      /* operation - write/read */
#define GEM_MIF_FRAME_START     0xc0000000      /* START bits */

#define GEM_MIF_FRAME_READ      0x60020000
#define GEM_MIF_FRAME_WRITE     0x50020000

#define GEM_MIF_REG_SHIFT       18
#define GEM_MIF_PHY_SHIFT       23


/* GEM_MIF_CONFIG register bits */
#define GEM_MIF_CONFIG_PHY_SEL  0x00000001      /* PHY select, 0=MDIO0 */
#define GEM_MIF_CONFIG_POLL_ENA 0x00000002      /* poll enable */
#define GEM_MIF_CONFIG_BB_ENA   0x00000004      /* bit bang enable */
#define GEM_MIF_CONFIG_REG_ADR  0x000000f8      /* poll register address */
#define GEM_MIF_CONFIG_MDI0     0x00000100      /* MDIO_0 Data/MDIO_0 atached */
#define GEM_MIF_CONFIG_MDI1     0x00000200      /* MDIO_1 Data/MDIO_1 atached */
#define GEM_MIF_CONFIG_PHY_ADR  0x00007c00      /* poll PHY address */
/* MDI0 is the onboard transceiver, MDI1 is external, PHYAD for both is 0. */
#define GEM_MIF_CONFIG_BITS     "\177\020b\0PHYSEL\0b\1POLL\0b\2BBENA\0" \
                                "b\x8MDIO0\0b\x9MDIO1\0\0"


/* GEM_MIF_BASIC_STATUS and GEM_MIF_INTERRUPT_MASK bits */
#define GEM_MIF_STATUS          0x0000ffff
#define GEM_MIF_BASIC           0xffff0000
/*
 * The Basic part is the last value read in the POLL field of the config
 * register.
 *
 * The status part indicates the bits that have changed.
 */


/* GEM PCS/Serial link registers */
/* DO NOT TOUCH THESE REGISTERS ON ERI -- IT HARD HANGS. */
#define GEM_MII_CONTROL         0x9000
#define GEM_MII_STATUS          0x9004
#define GEM_MII_ANAR            0x9008          /* MII advertisement reg */
#define GEM_MII_ANLPAR          0x900c          /* Link Partner Ability Reg */
#define GEM_MII_CONFIG          0x9010
#define GEM_MII_STATE_MACHINE   0x9014
#define GEM_MII_INTERRUP_STATUS 0x9018          /* PCS interrupt state */
#define GEM_MII_DATAPATH_MODE   0x9050
#define GEM_MII_SLINK_CONTROL   0x9054          /* Serial link control */
#define GEM_MII_OUTPUT_SELECT   0x9058
#define GEM_MII_SLINK_STATUS    0x905c          /* serial link status */


/* GEM_MII_CONTROL bits - PCS "BMCR" (Basic Mode Control Reg) */
#define GEM_MII_CONTROL_RESET   0x00008000
#define GEM_MII_CONTROL_LOOPBK  0x00004000      /* 10-bit i/f loopback */
#define GEM_MII_CONTROL_1000M   0x00002000      /* speed select, always 0 */
#define GEM_MII_CONTROL_AUTONEG 0x00001000      /* auto negotiation enabled */
#define GEM_MII_CONTROL_POWERDN 0x00000800
#define GEM_MII_CONTROL_ISOLATE 0x00000400      /* isolate phy from mii */
#define GEM_MII_CONTROL_RAN     0x00000200      /* restart auto negotiation */
#define GEM_MII_CONTROL_FDUPLEX 0x00000100      /* full duplex, always 0 */
#define GEM_MII_CONTROL_COL_TST 0x00000080      /* collision test */
#define GEM_MII_CONTROL_BITS    "\177\020b\7COLTST\0b\x8_FD\0b\x9RAN\0" \
                                "b\xaISOLATE\0b\xbPWRDWN\0b\xc_ANEG\0" \
                                "b\xdGIGE\0b\xeLOOP\0b\xfRESET\0\0"


/* GEM_MII_STATUS reg - PCS "BMSR" (Basic Mode Status Reg) */
#define GEM_MII_STATUS_GB_FDX   0x00000400      /* can perform GBit FDX */
#define GEM_MII_STATUS_GB_HDX   0x00000200      /* can perform GBit HDX */
#define GEM_MII_STATUS_UNK      0x00000100
#define GEM_MII_STATUS_ANEG_CPT 0x00000020      /* auto negotiate compete */
#define GEM_MII_STATUS_REM_FLT  0x00000010      /* remote fault detected */
#define GEM_MII_STATUS_ACFG     0x00000008      /* can auto negotiate */
#define GEM_MII_STATUS_LINK_STS 0x00000004      /* link status */
#define GEM_MII_STATUS_JABBER   0x00000002      /* jabber condition detected */
#define GEM_MII_STATUS_EXTCAP   0x00000001      /* extended register capability */
#define GEM_MII_STATUS_BITS     "\177\020b\0EXTCAP\0b\1JABBER\0b\2LINKSTS\0" \
                                "b\3ACFG\0b\4REMFLT\0b\5ANEGCPT\0b\x9GBHDX\0" \
                                "b\xaGBFDX\0\0"


/* GEM_MII_ANAR and GEM_MII_ANLPAR reg bits */
#define GEM_MII_ANEG_NP         0x00008000      /* next page bit */
#define GEM_MII_ANEG_ACK        0x00004000      /* ack reception of */
                                                /* Link Partner Capability */
#define GEM_MII_ANEG_RF         0x00003000      /* advertise remote fault cap */
#define GEM_MII_ANEG_ASYM_PAUSE 0x00000100      /* asymmetric pause */
#define GEM_MII_ANEG_SYM_PAUSE  0x00000080      /* symmetric pause */
#define GEM_MII_ANEG_HLF_DUPLX  0x00000040
#define GEM_MII_ANEG_FUL_DUPLX  0x00000020
#define GEM_MII_ANEG_BITS       "\177\020b\5FDX\0b\6HDX\0b\7SYMPAUSE\0" \
                                "\b\x8_ASYMPAUSE\0\b\xdREMFLT\0\b\xeLPACK\0" \
                                "\b\xfNPBIT\0\0"


/* GEM_MII_CONFIG reg */
#define GEM_MII_CONFIG_TIMER    0x0000000e      /* link monitor timer values */
#define GEM_MII_CONFIG_ANTO     0x00000020      /* 10ms ANEG timer override */
#define GEM_MII_CONFIG_JS       0x00000018      /* Jitter Study, 0 normal
                                                 * 1 high freq, 2 low freq */
#define GEM_MII_CONFIG_SDL      0x00000004      /* Signal Detect active low */
#define GEM_MII_CONFIG_SDO      0x00000002      /* Signal Detect Override */
#define GEM_MII_CONFIG_ENABLE   0x00000001      /* Enable PCS */
#define GEM_MII_CONFIG_BITS     "\177\020b\0PCSENA\0\0"


/*
 * GEM_MII_STATE_MACHINE
 * XXX These are best guesses from observed behavior.
 */
#define GEM_MII_FSM_STOP        0x00000000      /* stopped */
#define GEM_MII_FSM_RUN         0x00000001      /* running */
#define GEM_MII_FSM_UNKWN       0x00000100      /* unknown */
#define GEM_MII_FSM_DONE        0x00000101      /* complete */


/*
 * GEM_MII_INTERRUP_STATUS reg
 * No mask register; mask with the global interrupt mask register.
 */
#define GEM_MII_INTERRUP_LINK   0x00000004      /* PCS link status change */


/* GEM_MII_DATAPATH_MODE reg */
#define GEM_MII_DATAPATH_SERIAL 0x00000001      /* Serial link */
#define GEM_MII_DATAPATH_SERDES 0x00000002      /* Use PCS via 10bit interfac */
#define GEM_MII_DATAPATH_MII    0x00000004      /* Use {G}MII, not PCS */
#define GEM_MII_DATAPATH_MIIOUT 0x00000008      /* enable serial output on GMII */
#define GEM_MII_DATAPATH_BITS   "\177\020"      \
                                "b\0SERIAL\0b\1SERDES\0b\2MII\0b\3MIIOUT\0\0"


/* GEM_MII_SLINK_CONTROL reg */
#define GEM_MII_SLINK_LOOPBACK  0x00000001      /* enable loopback at sl, logic
                                                 * reversed for SERDES */
#define GEM_MII_SLINK_EN_SYNC_D 0x00000002      /* enable sync detection */
#define GEM_MII_SLINK_LOCK_REF  0x00000004      /* lock reference clock */
#define GEM_MII_SLINK_EMPHASIS  0x00000008      /* enable emphasis */
#define GEM_MII_SLINK_SELFTEST  0x000001c0
#define GEM_MII_SLINK_POWER_OFF 0x00000200      /* Power down serial link */
#define GEM_MII_SLINK_CONTROL_BITS              \
                                "\177\020b\0LOOP\0b\1ENASYNC\0b\2LOCKREF" \
                                "\0b\3EMPHASIS\0b\x9PWRDWN\0\0"


/* GEM_MII_SLINK_STATUS reg */
#define GEM_MII_SLINK_TEST      0x00000000      /* undergoing test */
#define GEM_MII_SLINK_LOCKED    0x00000001      /* waiting 500us lockrefn */
#define GEM_MII_SLINK_COMMA     0x00000002      /* waiting for comma detect */
#define GEM_MII_SLINK_SYNC      0x00000003      /* recv data synchronized */

/*
 * PCI Expansion ROM runtime access
 * Sun GEMs map a 1MB space for the PCI Expansion ROM as the second half
 * of the first register bank, although they only support up to 64KB ROMs.
 */
#define GEM_PCI_ROM_OFFSET      0x100000
#define GEM_PCI_ROM_SIZE        0x10000

/* Wired GEM PHY addresses */
#define GEM_PHYAD_INTERNAL      1
#define GEM_PHYAD_EXTERNAL      0

/*
 * GEM descriptor table structures
 */
struct gem_desc {
        uint64_t        gd_flags;
        uint64_t        gd_addr;
};

/* Transmit flags */
#define GEM_TD_BUFSIZE          0x0000000000007fffLL
#define GEM_TD_CXSUM_START      0x00000000001f8000LL    /* Cxsum start offset */
#define GEM_TD_CXSUM_STARTSHFT  15
#define GEM_TD_CXSUM_STUFF      0x000000001fe00000LL    /* Cxsum stuff offset */
#define GEM_TD_CXSUM_STUFFSHFT  21
#define GEM_TD_CXSUM_ENABLE     0x0000000020000000LL    /* Cxsum generation enable */
#define GEM_TD_END_OF_PACKET    0x0000000040000000LL
#define GEM_TD_START_OF_PACKET  0x0000000080000000LL
#define GEM_TD_INTERRUPT_ME     0x0000000100000000LL    /* Interrupt me now */
#define GEM_TD_NO_CRC           0x0000000200000000LL    /* do not insert crc */
/*
 * Only need to set GEM_TD_CXSUM_ENABLE, GEM_TD_CXSUM_STUFF,
 * GEM_TD_CXSUM_START, and GEM_TD_INTERRUPT_ME in 1st descriptor of a group.
 */

/* Receive flags */
#define GEM_RD_CHECKSUM         0x000000000000ffffLL    /* is the complement */
#define GEM_RD_BUFSIZE          0x000000007fff0000LL
#define GEM_RD_OWN              0x0000000080000000LL    /* 1 - owned by h/w */
#define GEM_RD_HASHVAL          0x0ffff00000000000LL
#define GEM_RD_HASH_PASS        0x1000000000000000LL    /* passed hash filter */
#define GEM_RD_ALTERNATE_MAC    0x2000000000000000LL    /* Alternate MAC adrs */
#define GEM_RD_BAD_CRC          0x4000000000000000LL

#define GEM_RD_BUFSHIFT         16
#define GEM_RD_BUFLEN(x)        (((x) & GEM_RD_BUFSIZE) >> GEM_RD_BUFSHIFT)

#endif