drivers/net/ethernet/i825xx/ether1.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  linux/drivers/acorn/net/ether1.h
   4  *
   5  *  Copyright (C) 1996 Russell King
   6  *
   7  *  Network driver for Acorn Ether1 cards.
   8  */
   9
  10 #ifndef _LINUX_ether1_H
  11 #define _LINUX_ether1_H
  12
  13 #ifdef __ETHER1_C
  14 /* use 0 for production, 1 for verification, >2 for debug */
  15 #ifndef NET_DEBUG
  16 #define NET_DEBUG 0
  17 #endif
  18
  19 #define priv(dev)       ((struct ether1_priv *)netdev_priv(dev))
  20
  21 /* Page register */
  22 #define REG_PAGE        (priv(dev)->base + 0x0000)
  23
  24 /* Control register */
  25 #define REG_CONTROL     (priv(dev)->base + 0x0004)
  26 #define CTRL_RST        0x01
  27 #define CTRL_LOOPBACK   0x02
  28 #define CTRL_CA         0x04
  29 #define CTRL_ACK        0x08
  30
  31 #define ETHER1_RAM      (priv(dev)->base + 0x2000)
  32
  33 /* HW address */
  34 #define IDPROM_ADDRESS  (priv(dev)->base + 0x0024)
  35
  36 struct ether1_priv {
  37         void __iomem *base;
  38         unsigned int tx_link;
  39         unsigned int tx_head;
  40         volatile unsigned int tx_tail;
  41         volatile unsigned int rx_head;
  42         volatile unsigned int rx_tail;
  43         unsigned char bus_type;
  44         unsigned char resetting;
  45         unsigned char initialising : 1;
  46         unsigned char restart      : 1;
  47 };
  48
  49 #define I82586_NULL (-1)
  50
  51 typedef struct { /* tdr */
  52         unsigned short tdr_status;
  53         unsigned short tdr_command;
  54         unsigned short tdr_link;
  55         unsigned short tdr_result;
  56 #define TDR_TIME        (0x7ff)
  57 #define TDR_SHORT       (1 << 12)
  58 #define TDR_OPEN        (1 << 13)
  59 #define TDR_XCVRPROB    (1 << 14)
  60 #define TDR_LNKOK       (1 << 15)
  61 } tdr_t;
  62
  63 typedef struct { /* transmit */
  64         unsigned short tx_status;
  65         unsigned short tx_command;
  66         unsigned short tx_link;
  67         unsigned short tx_tbdoffset;
  68 } tx_t;
  69
  70 typedef struct { /* tbd */
  71         unsigned short tbd_opts;
  72 #define TBD_CNT         (0x3fff)
  73 #define TBD_EOL         (1 << 15)
  74         unsigned short tbd_link;
  75         unsigned short tbd_bufl;
  76         unsigned short tbd_bufh;
  77 } tbd_t;
  78
  79 typedef struct { /* rfd */
  80         unsigned short rfd_status;
  81 #define RFD_NOEOF       (1 << 6)
  82 #define RFD_FRAMESHORT  (1 << 7)
  83 #define RFD_DMAOVRN     (1 << 8)
  84 #define RFD_NORESOURCES (1 << 9)
  85 #define RFD_ALIGNERROR  (1 << 10)
  86 #define RFD_CRCERROR    (1 << 11)
  87 #define RFD_OK          (1 << 13)
  88 #define RFD_FDCONSUMED  (1 << 14)
  89 #define RFD_COMPLETE    (1 << 15)
  90         unsigned short rfd_command;
  91 #define RFD_CMDSUSPEND  (1 << 14)
  92 #define RFD_CMDEL       (1 << 15)
  93         unsigned short rfd_link;
  94         unsigned short rfd_rbdoffset;
  95         unsigned char  rfd_dest[6];
  96         unsigned char  rfd_src[6];
  97         unsigned short rfd_len;
  98 } rfd_t;
  99
 100 typedef struct { /* rbd */
 101         unsigned short rbd_status;
 102 #define RBD_ACNT        (0x3fff)
 103 #define RBD_ACNTVALID   (1 << 14)
 104 #define RBD_EOF         (1 << 15)
 105         unsigned short rbd_link;
 106         unsigned short rbd_bufl;
 107         unsigned short rbd_bufh;
 108         unsigned short rbd_len;
 109 } rbd_t;
 110
 111 typedef struct { /* nop */
 112         unsigned short nop_status;
 113         unsigned short nop_command;
 114         unsigned short nop_link;
 115 } nop_t;
 116
 117 typedef struct { /* set multicast */
 118         unsigned short mc_status;
 119         unsigned short mc_command;
 120         unsigned short mc_link;
 121         unsigned short mc_cnt;
 122         unsigned char  mc_addrs[1][6];
 123 } mc_t;
 124
 125 typedef struct { /* set address */
 126         unsigned short sa_status;
 127         unsigned short sa_command;
 128         unsigned short sa_link;
 129         unsigned char  sa_addr[6];
 130 } sa_t;
 131
 132 typedef struct { /* config command */
 133         unsigned short cfg_status;
 134         unsigned short cfg_command;
 135         unsigned short cfg_link;
 136         unsigned char  cfg_bytecnt;     /* size foll data: 4 - 12                */
 137         unsigned char  cfg_fifolim;     /* FIFO threshold                        */
 138         unsigned char  cfg_byte8;
 139 #define CFG8_SRDY       (1 << 6)
 140 #define CFG8_SAVEBADF   (1 << 7)
 141         unsigned char  cfg_byte9;
 142 #define CFG9_ADDRLEN(x) (x)
 143 #define CFG9_ADDRLENBUF (1 << 3)
 144 #define CFG9_PREAMB2    (0 << 4)
 145 #define CFG9_PREAMB4    (1 << 4)
 146 #define CFG9_PREAMB8    (2 << 4)
 147 #define CFG9_PREAMB16   (3 << 4)
 148 #define CFG9_ILOOPBACK  (1 << 6)
 149 #define CFG9_ELOOPBACK  (1 << 7)
 150         unsigned char  cfg_byte10;
 151 #define CFG10_LINPRI(x) (x)
 152 #define CFG10_ACR(x)    (x << 4)
 153 #define CFG10_BOFMET    (1 << 7)
 154         unsigned char  cfg_ifs;
 155         unsigned char  cfg_slotl;
 156         unsigned char  cfg_byte13;
 157 #define CFG13_SLOTH(x)  (x)
 158 #define CFG13_RETRY(x)  (x << 4)
 159         unsigned char  cfg_byte14;
 160 #define CFG14_PROMISC   (1 << 0)
 161 #define CFG14_DISBRD    (1 << 1)
 162 #define CFG14_MANCH     (1 << 2)
 163 #define CFG14_TNCRS     (1 << 3)
 164 #define CFG14_NOCRC     (1 << 4)
 165 #define CFG14_CRC16     (1 << 5)
 166 #define CFG14_BTSTF     (1 << 6)
 167 #define CFG14_FLGPAD    (1 << 7)
 168         unsigned char  cfg_byte15;
 169 #define CFG15_CSTF(x)   (x)
 170 #define CFG15_ICSS      (1 << 3)
 171 #define CFG15_CDTF(x)   (x << 4)
 172 #define CFG15_ICDS      (1 << 7)
 173         unsigned short cfg_minfrmlen;
 174 } cfg_t;
 175
 176 typedef struct { /* scb */
 177         unsigned short scb_status;      /* status of 82586                      */
 178 #define SCB_STRXMASK            (7 << 4)        /* Receive unit status          */
 179 #define SCB_STRXIDLE            (0 << 4)        /* Idle                         */
 180 #define SCB_STRXSUSP            (1 << 4)        /* Suspended                    */
 181 #define SCB_STRXNRES            (2 << 4)        /* No resources                 */
 182 #define SCB_STRXRDY             (4 << 4)        /* Ready                        */
 183 #define SCB_STCUMASK            (7 << 8)        /* Command unit status          */
 184 #define SCB_STCUIDLE            (0 << 8)        /* Idle                         */
 185 #define SCB_STCUSUSP            (1 << 8)        /* Suspended                    */
 186 #define SCB_STCUACTV            (2 << 8)        /* Active                       */
 187 #define SCB_STRNR               (1 << 12)       /* Receive unit not ready       */
 188 #define SCB_STCNA               (1 << 13)       /* Command unit not ready       */
 189 #define SCB_STFR                (1 << 14)       /* Frame received               */
 190 #define SCB_STCX                (1 << 15)       /* Command completed            */
 191         unsigned short scb_command;     /* Next command                         */
 192 #define SCB_CMDRXSTART          (1 << 4)        /* Start (at rfa_offset)        */
 193 #define SCB_CMDRXRESUME         (2 << 4)        /* Resume reception             */
 194 #define SCB_CMDRXSUSPEND        (3 << 4)        /* Suspend reception            */
 195 #define SCB_CMDRXABORT          (4 << 4)        /* Abort reception              */
 196 #define SCB_CMDCUCSTART         (1 << 8)        /* Start (at cbl_offset)        */
 197 #define SCB_CMDCUCRESUME        (2 << 8)        /* Resume execution             */
 198 #define SCB_CMDCUCSUSPEND       (3 << 8)        /* Suspend execution            */
 199 #define SCB_CMDCUCABORT         (4 << 8)        /* Abort execution              */
 200 #define SCB_CMDACKRNR           (1 << 12)       /* Ack RU not ready             */
 201 #define SCB_CMDACKCNA           (1 << 13)       /* Ack CU not ready             */
 202 #define SCB_CMDACKFR            (1 << 14)       /* Ack Frame received           */
 203 #define SCB_CMDACKCX            (1 << 15)       /* Ack Command complete         */
 204         unsigned short scb_cbl_offset;  /* Offset of first command unit         */
 205         unsigned short scb_rfa_offset;  /* Offset of first receive frame area   */
 206         unsigned short scb_crc_errors;  /* Properly aligned frame with CRC error*/
 207         unsigned short scb_aln_errors;  /* Misaligned frames                    */
 208         unsigned short scb_rsc_errors;  /* Frames lost due to no space          */
 209         unsigned short scb_ovn_errors;  /* Frames lost due to slow bus          */
 210 } scb_t;
 211
 212 typedef struct { /* iscp */
 213         unsigned short iscp_busy;       /* set by CPU before CA                 */
 214         unsigned short iscp_offset;     /* offset of SCB                        */
 215         unsigned short iscp_basel;      /* base of SCB                          */
 216         unsigned short iscp_baseh;
 217 } iscp_t;
 218
 219     /* this address must be 0xfff6 */
 220 typedef struct { /* scp */
 221         unsigned short scp_sysbus;      /* bus size */
 222 #define SCP_SY_16BBUS   0x00
 223 #define SCP_SY_8BBUS    0x01
 224         unsigned short scp_junk[2];     /* junk */
 225         unsigned short scp_iscpl;       /* lower 16 bits of iscp */
 226         unsigned short scp_iscph;       /* upper 16 bits of iscp */
 227 } scp_t;
 228
 229 /* commands */
 230 #define CMD_NOP                 0
 231 #define CMD_SETADDRESS          1
 232 #define CMD_CONFIG              2
 233 #define CMD_SETMULTICAST        3
 234 #define CMD_TX                  4
 235 #define CMD_TDR                 5
 236 #define CMD_DUMP                6
 237 #define CMD_DIAGNOSE            7
 238
 239 #define CMD_MASK                7
 240
 241 #define CMD_INTR                (1 << 13)
 242 #define CMD_SUSP                (1 << 14)
 243 #define CMD_EOL                 (1 << 15)
 244
 245 #define STAT_COLLISIONS         (15)
 246 #define STAT_COLLEXCESSIVE      (1 << 5)
 247 #define STAT_COLLAFTERTX        (1 << 6)
 248 #define STAT_TXDEFERRED         (1 << 7)
 249 #define STAT_TXSLOWDMA          (1 << 8)
 250 #define STAT_TXLOSTCTS          (1 << 9)
 251 #define STAT_NOCARRIER          (1 << 10)
 252 #define STAT_FAIL               (1 << 11)
 253 #define STAT_ABORTED            (1 << 12)
 254 #define STAT_OK                 (1 << 13)
 255 #define STAT_BUSY               (1 << 14)
 256 #define STAT_COMPLETE           (1 << 15)
 257 #endif
 258 #endif
 259
 260 /*
 261  * Ether1 card definitions:
 262  *
 263  * FAST accesses:
 264  *      +0      Page register
 265  *                      16 pages
 266  *      +4      Control
 267  *                      '1' = reset
 268  *                      '2' = loopback
 269  *                      '4' = CA
 270  *                      '8' = int ack
 271  *
 272  * RAM at address + 0x2000
 273  * Pod. Prod id = 3
 274  * Words after ID block [base + 8 words]
 275  *      +0 pcb issue (0x0c and 0xf3 invalid)
 276  *      +1 - +6 eth hw address
 277  */