drivers/net/hydra.h

   1 /*      $Linux: hydra.h,v 1.0 1994/10/26 02:03:47 cgd Exp $     */
   2
   3 /*
   4  * Copyright (c) 1994 Timo Rossi
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by  Timo Rossi
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * The Hydra Systems card uses the National Semiconductor
  35  * 8390 NIC (Network Interface Controller) chip, located
  36  * at card base address + 0xffe1. NIC registers are accessible
  37  * only at odd byte addresses, so the register offsets must
  38  * be multiplied by two.
  39  *
  40  * Card address PROM is located at card base + 0xffc0 (even byte addresses)
  41  *
  42  * RAM starts at the card base address, and is 16K or 64K.
  43  * The current Amiga NetBSD hydra driver is hardwired for 16K.
  44  * It seems that the RAM should be accessed as words or longwords only.
  45  *
  46  */
  47
  48 /* adapted for Linux by Topi Kanerva 03/29/95
  49    with original author's permission          */
  50
  51 #define HYDRA_NIC_BASE 0xffe1
  52
  53 /* Page0 registers */
  54
  55 #define NIC_CR     0       /* Command register   */
  56 #define NIC_PSTART (1*2)   /* Page start (write) */
  57 #define NIC_PSTOP  (2*2)   /* Page stop (write)  */
  58 #define NIC_BNDRY  (3*2)   /* Boundary pointer   */
  59 #define NIC_TSR    (4*2)   /* Transmit status (read) */
  60 #define NIC_TPSR   (4*2)   /* Transmit page start (write) */
  61 #define NIC_NCR    (5*2)   /* Number of collisions, read  */
  62 #define NIC_TBCR0  (5*2)   /* Transmit byte count low (write)  */
  63 #define NIC_FIFO   (6*2)   /* FIFO reg. (read)   */
  64 #define NIC_TBCR1  (6*2)   /* Transmit byte count high (write) */
  65 #define NIC_ISR    (7*2)   /* Interrupt status register */
  66 #define NIC_RBCR0  (0xa*2) /* Remote byte count low (write)  */
  67 #define NIC_RBCR1  (0xb*2) /* Remote byte count high (write) */
  68 #define NIC_RSR    (0xc*2) /* Receive status (read)  */
  69 #define NIC_RCR    (0xc*2) /* Receive config (write) */
  70 #define NIC_CNTR0  (0xd*2) /* Frame alignment error count (read) */
  71 #define NIC_TCR    (0xd*2) /* Transmit config (write)  */
  72 #define NIC_CNTR1  (0xe*2) /* CRC error counter (read) */
  73 #define NIC_DCR    (0xe*2) /* Data config (write) */
  74 #define NIC_CNTR2  (0xf*2) /* missed packet counter (read) */
  75 #define NIC_IMR    (0xf*2) /* Interrupt mask reg. (write)  */
  76
  77 /* Page1 registers */
  78
  79 #define NIC_PAR0   (1*2)   /* Physical address */
  80 #define NIC_PAR1   (2*2)
  81 #define NIC_PAR2   (3*2)
  82 #define NIC_PAR3   (4*2)
  83 #define NIC_PAR4   (5*2)
  84 #define NIC_PAR5   (6*2)
  85 #define NIC_CURR   (7*2)   /* Current RX ring-buffer page */
  86 #define NIC_MAR0   (8*2)   /* Multicast address */
  87 #define NIC_MAR1   (9*2)
  88 #define NIC_MAR2   (0xa*2)
  89 #define NIC_MAR3   (0xb*2)
  90 #define NIC_MAR4   (0xc*2)
  91 #define NIC_MAR5   (0xd*2)
  92 #define NIC_MAR6   (0xe*2)
  93 #define NIC_MAR7   (0xf*2)
  94
  95 /* Command register definitions */
  96
  97 #define CR_STOP   0x01 /* Stop -- software reset command */
  98 #define CR_START  0x02 /* Start */
  99 #define CR_TXP   0x04 /* Transmit packet */
 100
 101 #define CR_RD0    0x08 /* Remote DMA cmd */
 102 #define CR_RD1    0x10
 103 #define CR_RD2    0x20
 104
 105 #define CR_NODMA  CR_RD2
 106
 107 #define CR_PS0    0x40 /* Page select */
 108 #define CR_PS1    0x80
 109
 110 #define CR_PAGE0  0
 111 #define CR_PAGE1  CR_PS0
 112 #define CR_PAGE2  CR_PS1
 113
 114 /* Interrupt status reg. definitions */
 115
 116 #define ISR_PRX   0x01 /* Packet received without errors */
 117 #define ISR_PTX   0x02 /* Packet transmitted without errors */
 118 #define ISR_RXE   0x04 /* Receive error  */
 119 #define ISR_TXE   0x08 /* Transmit error */
 120 #define ISR_OVW   0x10 /* Ring buffer overrun */
 121 #define ISR_CNT   0x20 /* Counter overflow    */
 122 #define ISR_RDC   0x40 /* Remote DMA compile */
 123 #define ISR_RST   0x80 /* Reset status      */
 124
 125 /* Data config reg. definitions */
 126
 127 #define DCR_WTS   0x01 /* Word transfer select  */
 128 #define DCR_BOS   0x02 /* Byte order select     */
 129 #define DCR_LAS   0x04 /* Long address select   */
 130 #define DCR_LS    0x08 /* Loopback select       */
 131 #define DCR_AR    0x10 /* Auto-init remote      */
 132 #define DCR_FT0   0x20 /* FIFO threshold select */
 133 #define DCR_FT1   0x40
 134
 135 /* Transmit config reg. definitions */
 136
 137 #define TCR_CRC  0x01 /* Inhibit CRC */
 138 #define TCR_LB0  0x02 /* Loopback control */
 139 #define TCR_LB1  0x04
 140 #define TCR_ATD  0x08 /* Auto transmit disable */
 141 #define TCR_OFST 0x10 /* Collision offset enable */
 142
 143 /* Transmit status reg. definitions */
 144
 145 #define TSR_PTX  0x01 /* Packet transmitted */
 146 #define TSR_COL  0x04 /* Transmit collided */
 147 #define TSR_ABT  0x08 /* Transmit aborted */
 148 #define TSR_CRS  0x10 /* Carrier sense lost */
 149 #define TSR_FU   0x20 /* FIFO underrun */
 150 #define TSR_CDH  0x40 /* CD Heartbeat */
 151 #define TSR_OWC  0x80 /* Out of Window Collision */
 152
 153 /* Receiver config register definitions */
 154
 155 #define RCR_SEP  0x01 /* Save errored packets */
 156 #define RCR_AR   0x02 /* Accept runt packets */
 157 #define RCR_AB   0x04 /* Accept broadcast */
 158 #define RCR_AM   0x08 /* Accept multicast */
 159 #define RCR_PRO  0x10 /* Promiscuous mode */
 160 #define RCR_MON  0x20 /* Monitor mode */
 161
 162 /* Receiver status register definitions */
 163
 164 #define RSR_PRX  0x01 /* Packet received without error */
 165 #define RSR_CRC  0x02 /* CRC error */
 166 #define RSR_FAE  0x04 /* Frame alignment error */
 167 #define RSR_FO   0x08 /* FIFO overrun */
 168 #define RSR_MPA  0x10 /* Missed packet */
 169 #define RSR_PHY  0x20 /* Physical address */
 170 #define RSR_DIS  0x40 /* Received disabled */
 171 #define RSR_DFR  0x80 /* Deferring (jabber) */
 172
 173 /* Hydra System card address PROM offset */
 174
 175 #define HYDRA_ADDRPROM 0xffc0
 176
 177