FreeBSD/Linux Kernel Cross Reference
sys/pci/if_rlreg.h

     /*
      * Copyright (c) 1997, 1998
      *      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 */
    #define RL_CFG0         0x0051          /* config register #0 */
    #define RL_CFG1         0x0052          /* config register #1 */
                                            /* 0053-0057 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 */
   
   
   /*
    * TX config register bits
    */
   #define RL_TXCFG_CLRABRT        0x00000001      /* retransmit aborted pkt */
   #define RL_TXCFG_MAXDMA         0x00000700      /* max DMA burst size */
   #define RL_TXCFG_CRCAPPEND      0x00010000      /* CRC append (0 = yes) */
   #define RL_TXCFG_LOOPBKTST      0x00060000      /* loopback test */
   #define RL_TXCFG_IFG            0x03000000      /* interframe gap */
   
   #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_FIFO_OFLOW       0x0040  /* 8139 only */
   #define RL_ISR_PCS_TIMEOUT      0x4000  /* 8129 only */
   #define RL_ISR_SYSTEM_ERR       0x8000
   
   #define RL_INTRS        \
           (RL_ISR_TX_OK|RL_ISR_RX_OK|RL_ISR_RX_ERR|RL_ISR_TX_ERR|         \
           RL_ISR_RX_OVERRUN|RL_ISR_PKT_UNDERRUN|RL_ISR_FIFO_OFLOW|        \
           RL_ISR_PCS_TIMEOUT|RL_ISR_SYSTEM_ERR)
   
   /*
    * 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_MAXDMA         0x00000700
   #define RL_RXCFG_BUFSZ          0x00001800
   #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    0xFFF0          /* 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
   
   /*
    * 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_EECMD_WRITE          0x140
   #define RL_EECMD_READ           0x180
   #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_SLEEP           0x02
   #define RL_CFG1_IOMAP           0x04
   #define RL_CFG1_MEMMAP          0x08
   #define RL_CFG1_RSVD            0x10
   #define RL_CFG1_DRVLOAD         0x20
   #define RL_CFG1_LED0            0x40
   #define RL_CFG1_FULLDUPLEX      0x40    /* 8129 only */
   #define RL_CFG1_LED1            0x80
   
   /*
    * 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_TXTHRESH(x)          ((x) << 11)
   #define RL_TX_THRESH_INIT       96
   #define RL_RX_FIFOTHRESH        RL_RXFIFO_256BYTES
   #define RL_RX_MAXDMA            RL_RXDMA_256BYTES
   #define RL_TX_MAXDMA            RL_TXDMA_256BYTES
   
   #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
   
   struct rl_chain_data {
           u_int16_t               cur_rx;
           caddr_t                 rl_rx_buf;
           caddr_t                 rl_rx_buf_ptr;
   
           struct mbuf             *rl_tx_chain[RL_TX_LIST_CNT];
           u_int8_t                last_tx;
           u_int8_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_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])
   
   struct rl_type {
           u_int16_t               rl_vid;
           u_int16_t               rl_did;
           char                    *rl_name;
   };
   
   struct rl_mii_frame {
           u_int8_t                mii_stdelim;
           u_int8_t                mii_opcode;
           u_int8_t                mii_phyaddr;
           u_int8_t                mii_regaddr;
           u_int8_t                mii_turnaround;
           u_int16_t               mii_data;
   };
   
   /*
    * MII constants
    */
   #define RL_MII_STARTDELIM       0x01
   #define RL_MII_READOP           0x02
   #define RL_MII_WRITEOP          0x01
   #define RL_MII_TURNAROUND       0x02
   
   #define RL_FLAG_FORCEDELAY      1
   #define RL_FLAG_SCHEDDELAY      2
   #define RL_FLAG_DELAYTIMEO      3       
   
   #define RL_8129                 1
   #define RL_8139                 2
   
   struct rl_softc {
           struct arpcom           arpcom;         /* interface info */
           struct ifmedia          ifmedia;        /* media info */
           bus_space_handle_t      rl_bhandle;     /* bus space handle */
           bus_space_tag_t         rl_btag;        /* bus space tag */
           struct rl_type          *rl_pinfo;      /* phy info */
           u_int8_t                rl_unit;        /* interface number */
           u_int8_t                rl_type;
           u_int8_t                rl_phy_addr;    /* PHY address */
           u_int8_t                rl_tx_pend;     /* TX pending */
           u_int8_t                rl_want_auto;
           u_int8_t                rl_autoneg;
           u_int8_t                rl_stats_no_timeout;
           int                     rl_txthresh;
           struct rl_chain_data    rl_cdata;
   };
   
   /*
    * register space access macros
    */
   #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 RL_TIMEOUT              1000
   
   /*
    * General constants that are fun to know.
    *
    * RealTek PCI vendor ID
    */
   #define RT_VENDORID                             0x10EC
   
   /*
    * RealTek chip device IDs.
    */
   #define RT_DEVICEID_8129                        0x8129
   #define RT_DEVICEID_8139                        0x8139
   
   /*
    * Accton PCI vendor ID
    */
   #define ACCTON_VENDORID                         0x1113
   
   /*
    * Accton MPX 5030/5038 device ID.
    */
   #define ACCTON_DEVICEID_5030                    0x1211
   
   /*
    * 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
   
   /*
    * Texas Instruments PHY identifiers
    */
   #define TI_PHY_VENDORID         0x4000
   #define TI_PHY_10BT             0x501F
   #define TI_PHY_100VGPMI         0x502F
   
   /*
    * These ID values are for the NS DP83840A 10/100 PHY
    */
   #define NS_PHY_VENDORID         0x2000
   #define NS_PHY_83840A           0x5C0F
   
   /*
    * Level 1 10/100 PHY
    */
   #define LEVEL1_PHY_VENDORID     0x7810
   #define LEVEL1_PHY_LXT970       0x000F
   
   /*
    * Intel 82555 10/100 PHY
    */
   #define INTEL_PHY_VENDORID      0x0A28
   #define INTEL_PHY_82555         0x015F
   
   /*
    * SEEQ 80220 10/100 PHY
    */
   #define SEEQ_PHY_VENDORID       0x0016
   #define SEEQ_PHY_80220          0xF83F
   
   
   /*
    * PCI low memory base and low I/O base register, and
    * other PCI registers. Note: some are only available on
    * the 3c905B, in particular those that related to power management.
    */
   
   #define RL_PCI_VENDOR_ID        0x00
   #define RL_PCI_DEVICE_ID        0x02
   #define RL_PCI_COMMAND          0x04
   #define RL_PCI_STATUS           0x06
   #define RL_PCI_CLASSCODE        0x09
   #define RL_PCI_LATENCY_TIMER    0x0D
   #define RL_PCI_HEADER_TYPE      0x0E
   #define RL_PCI_LOIO             0x10
   #define RL_PCI_LOMEM            0x14
   #define RL_PCI_BIOSROM          0x30
   #define RL_PCI_INTLINE          0x3C
   #define RL_PCI_INTPIN           0x3D
   #define RL_PCI_MINGNT           0x3E
   #define RL_PCI_MINLAT           0x0F
   #define RL_PCI_RESETOPT         0x48
   #define RL_PCI_EEPROM_DATA      0x4C
   
   #define RL_PCI_CAPID            0x50 /* 8 bits */
   #define RL_PCI_NEXTPTR          0x51 /* 8 bits */
   #define RL_PCI_PWRMGMTCAP       0x52 /* 16 bits */
   #define RL_PCI_PWRMGMTCTRL      0x54 /* 16 bits */
   
   #define RL_PSTATE_MASK          0x0003
   #define RL_PSTATE_D0            0x0000
   #define RL_PSTATE_D1            0x0002
   #define RL_PSTATE_D2            0x0002
   #define RL_PSTATE_D3            0x0003
   #define RL_PME_EN               0x0010
   #define RL_PME_STATUS           0x8000
   
   #define PHY_UNKNOWN             6
   
   #define RL_PHYADDR_MIN          0x00
   #define RL_PHYADDR_MAX          0x1F
   
   #define PHY_BMCR                0x00
   #define PHY_BMSR                0x01
   #define PHY_VENID               0x02
   #define PHY_DEVID               0x03
   #define PHY_ANAR                0x04
   #define PHY_LPAR                0x05
   #define PHY_ANEXP               0x06
   
   #define PHY_ANAR_NEXTPAGE       0x8000
   #define PHY_ANAR_RSVD0          0x4000
   #define PHY_ANAR_TLRFLT         0x2000
   #define PHY_ANAR_RSVD1          0x1000
   #define PHY_ANAR_RSVD2          0x0800
   #define PHY_ANAR_RSVD3          0x0400
   #define PHY_ANAR_100BT4         0x0200
   #define PHY_ANAR_100BTXFULL     0x0100
   #define PHY_ANAR_100BTXHALF     0x0080
   #define PHY_ANAR_10BTFULL       0x0040
   #define PHY_ANAR_10BTHALF       0x0020
   #define PHY_ANAR_PROTO4         0x0010
   #define PHY_ANAR_PROTO3         0x0008
   #define PHY_ANAR_PROTO2         0x0004
   #define PHY_ANAR_PROTO1         0x0002
   #define PHY_ANAR_PROTO0         0x0001
   
   /*
    * These are the register definitions for the PHY (physical layer
    * interface chip).
    */
   /*
    * PHY BMCR Basic Mode Control Register
    */
   #define PHY_BMCR_RESET                  0x8000
   #define PHY_BMCR_LOOPBK                 0x4000
   #define PHY_BMCR_SPEEDSEL               0x2000
   #define PHY_BMCR_AUTONEGENBL            0x1000
   #define PHY_BMCR_RSVD0                  0x0800  /* write as zero */
   #define PHY_BMCR_ISOLATE                0x0400
   #define PHY_BMCR_AUTONEGRSTR            0x0200
   #define PHY_BMCR_DUPLEX                 0x0100
   #define PHY_BMCR_COLLTEST               0x0080
   #define PHY_BMCR_RSVD1                  0x0040  /* write as zero, don't care */
   #define PHY_BMCR_RSVD2                  0x0020  /* write as zero, don't care */
   #define PHY_BMCR_RSVD3                  0x0010  /* write as zero, don't care */
   #define PHY_BMCR_RSVD4                  0x0008  /* write as zero, don't care */
   #define PHY_BMCR_RSVD5                  0x0004  /* write as zero, don't care */
   #define PHY_BMCR_RSVD6                  0x0002  /* write as zero, don't care */
   #define PHY_BMCR_RSVD7                  0x0001  /* write as zero, don't care */
   /*
    * RESET: 1 == software reset, 0 == normal operation
    * Resets status and control registers to default values.
    * Relatches all hardware config values.
    *
    * LOOPBK: 1 == loopback operation enabled, 0 == normal operation
    *
    * SPEEDSEL: 1 == 100Mb/s, 0 == 10Mb/s
    * Link speed is selected byt his bit or if auto-negotiation if bit
    * 12 (AUTONEGENBL) is set (in which case the value of this register
    * is ignored).
    *
    * AUTONEGENBL: 1 == Autonegotiation enabled, 0 == Autonegotiation disabled
    * Bits 8 and 13 are ignored when autoneg is set, otherwise bits 8 and 13
    * determine speed and mode. Should be cleared and then set if PHY configured
    * for no autoneg on startup.
    *
    * ISOLATE: 1 == isolate PHY from MII, 0 == normal operation
    *
    * AUTONEGRSTR: 1 == restart autonegotiation, 0 = normal operation
    *
    * DUPLEX: 1 == full duplex mode, 0 == half duplex mode
    *
    * COLLTEST: 1 == collision test enabled, 0 == normal operation
    */
   
   /* 
    * PHY, BMSR Basic Mode Status Register 
    */   
   #define PHY_BMSR_100BT4                 0x8000
   #define PHY_BMSR_100BTXFULL             0x4000
   #define PHY_BMSR_100BTXHALF             0x2000
   #define PHY_BMSR_10BTFULL               0x1000
   #define PHY_BMSR_10BTHALF               0x0800
   #define PHY_BMSR_RSVD1                  0x0400  /* write as zero, don't care */
   #define PHY_BMSR_RSVD2                  0x0200  /* write as zero, don't care */
   #define PHY_BMSR_RSVD3                  0x0100  /* write as zero, don't care */
   #define PHY_BMSR_RSVD4                  0x0080  /* write as zero, don't care */
   #define PHY_BMSR_MFPRESUP               0x0040
   #define PHY_BMSR_AUTONEGCOMP            0x0020
   #define PHY_BMSR_REMFAULT               0x0010
   #define PHY_BMSR_CANAUTONEG             0x0008
   #define PHY_BMSR_LINKSTAT               0x0004
   #define PHY_BMSR_JABBER                 0x0002
   #define PHY_BMSR_EXTENDED               0x0001
   
   #ifdef __alpha__
   #undef vtophys
   #define vtophys(va)             (pmap_kextract(((vm_offset_t) (va))) \
                                           + 1*1024*1024*1024)
   #endif

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