1 /* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */ 2 3 #ifndef _SCC_H 4 #define _SCC_H 5 6 7 /* selection of hardware types */ 8 9 #define PA0HZP 0x00 /* hardware type for PA0HZP SCC card and compatible */ 10 #define EAGLE 0x01 /* hardware type for EAGLE card */ 11 #define PC100 0x02 /* hardware type for PC100 card */ 12 #define PRIMUS 0x04 /* hardware type for PRIMUS-PC (DG9BL) card */ 13 #define DRSI 0x08 /* hardware type for DRSI PC*Packet card */ 14 #define BAYCOM 0x10 /* hardware type for BayCom (U)SCC */ 15 16 /* DEV ioctl() commands */ 17 18 enum SCC_ioctl_cmds { 19 SIOCSCCRESERVED = SIOCDEVPRIVATE, 20 SIOCSCCCFG, 21 SIOCSCCINI, 22 SIOCSCCCHANINI, 23 SIOCSCCSMEM, 24 SIOCSCCGKISS, 25 SIOCSCCSKISS, 26 SIOCSCCGSTAT, 27 SIOCSCCCAL 28 }; 29 30 /* Device parameter control (from WAMPES) */ 31 32 enum L1_params { 33 PARAM_DATA, 34 PARAM_TXDELAY, 35 PARAM_PERSIST, 36 PARAM_SLOTTIME, 37 PARAM_TXTAIL, 38 PARAM_FULLDUP, 39 PARAM_SOFTDCD, /* was: PARAM_HW */ 40 PARAM_MUTE, /* ??? */ 41 PARAM_DTR, 42 PARAM_RTS, 43 PARAM_SPEED, 44 PARAM_ENDDELAY, /* ??? */ 45 PARAM_GROUP, 46 PARAM_IDLE, 47 PARAM_MIN, 48 PARAM_MAXKEY, 49 PARAM_WAIT, 50 PARAM_MAXDEFER, 51 PARAM_TX, 52 PARAM_HWEVENT = 31, 53 PARAM_RETURN = 255 /* reset kiss mode */ 54 }; 55 56 /* fulldup parameter */ 57 58 enum FULLDUP_modes { 59 KISS_DUPLEX_HALF, /* normal CSMA operation */ 60 KISS_DUPLEX_FULL, /* fullduplex, key down trx after transmission */ 61 KISS_DUPLEX_LINK, /* fullduplex, key down trx after 'idletime' sec */ 62 KISS_DUPLEX_OPTIMA /* fullduplex, let the protocol layer control the hw */ 63 }; 64 65 /* misc. parameters */ 66 67 #define TIMER_OFF 65535U /* to switch off timers */ 68 #define NO_SUCH_PARAM 65534U /* param not implemented */ 69 70 /* HWEVENT parameter */ 71 72 enum HWEVENT_opts { 73 HWEV_DCD_ON, 74 HWEV_DCD_OFF, 75 HWEV_ALL_SENT 76 }; 77 78 /* channel grouping */ 79 80 #define RXGROUP 0100 /* if set, only tx when all channels clear */ 81 #define TXGROUP 0200 /* if set, don't transmit simultaneously */ 82 83 /* Tx/Rx clock sources */ 84 85 enum CLOCK_sources { 86 CLK_DPLL, /* normal halfduplex operation */ 87 CLK_EXTERNAL, /* external clocking (G3RUH/DF9IC modems) */ 88 CLK_DIVIDER, /* Rx = DPLL, Tx = divider (fullduplex with */ 89 /* modems without clock regeneration */ 90 CLK_BRG /* experimental fullduplex mode with DPLL/BRG for */ 91 /* MODEMs without clock recovery */ 92 }; 93 94 /* Tx state */ 95 96 enum TX_state { 97 TXS_IDLE, /* Transmitter off, no data pending */ 98 TXS_BUSY, /* waiting for permission to send / tailtime */ 99 TXS_ACTIVE, /* Transmitter on, sending data */ 100 TXS_NEWFRAME, /* reset CRC and send (next) frame */ 101 TXS_IDLE2, /* Transmitter on, no data pending */ 102 TXS_WAIT, /* Waiting for Mintime to expire */ 103 TXS_TIMEOUT /* We had a transmission timeout */ 104 }; 105 106 typedef unsigned long io_port; /* type definition for an 'io port address' */ 107 108 /* SCC statistical information */ 109 110 struct scc_stat { 111 long rxints; /* Receiver interrupts */ 112 long txints; /* Transmitter interrupts */ 113 long exints; /* External/status interrupts */ 114 long spints; /* Special receiver interrupts */ 115 116 long txframes; /* Packets sent */ 117 long rxframes; /* Number of Frames Actually Received */ 118 long rxerrs; /* CRC Errors */ 119 long txerrs; /* KISS errors */ 120 121 unsigned int nospace; /* "Out of buffers" */ 122 unsigned int rx_over; /* Receiver Overruns */ 123 unsigned int tx_under; /* Transmitter Underruns */ 124 125 unsigned int tx_state; /* Transmitter state */ 126 int tx_queued; /* tx frames enqueued */ 127 128 unsigned int maxqueue; /* allocated tx_buffers */ 129 unsigned int bufsize; /* used buffersize */ 130 }; 131 132 struct scc_modem { 133 long speed; /* Line speed, bps */ 134 char clocksrc; /* 0 = DPLL, 1 = external, 2 = divider */ 135 char nrz; /* NRZ instead of NRZI */ 136 }; 137 138 struct scc_kiss_cmd { 139 int command; /* one of the KISS-Commands defined above */ 140 unsigned param; /* KISS-Param */ 141 }; 142 143 struct scc_hw_config { 144 io_port data_a; /* data port channel A */ 145 io_port ctrl_a; /* control port channel A */ 146 io_port data_b; /* data port channel B */ 147 io_port ctrl_b; /* control port channel B */ 148 io_port vector_latch; /* INTACK-Latch (#) */ 149 io_port special; /* special function port */ 150 151 int irq; /* irq */ 152 long clock; /* clock */ 153 char option; /* command for function port */ 154 155 char brand; /* hardware type */ 156 char escc; /* use ext. features of a 8580/85180/85280 */ 157 }; 158 159 /* (#) only one INTACK latch allowed. */ 160 161 162 struct scc_mem_config { 163 unsigned int dummy; 164 unsigned int bufsize; 165 }; 166 167 struct scc_calibrate { 168 unsigned int time; 169 unsigned char pattern; 170 }; 171 172 #ifdef __KERNEL__ 173 174 enum {TX_OFF, TX_ON}; /* command for scc_key_trx() */ 175 176 /* Vector masks in RR2B */ 177 178 #define VECTOR_MASK 0x06 179 #define TXINT 0x00 180 #define EXINT 0x02 181 #define RXINT 0x04 182 #define SPINT 0x06 183 184 #ifdef CONFIG_SCC_DELAY 185 #define Inb(port) inb_p(port) 186 #define Outb(port, val) outb_p(val, port) 187 #else 188 #define Inb(port) inb(port) 189 #define Outb(port, val) outb(val, port) 190 #endif 191 192 /* SCC channel control structure for KISS */ 193 194 struct scc_kiss { 195 unsigned char txdelay; /* Transmit Delay 10 ms/cnt */ 196 unsigned char persist; /* Persistence (0-255) as a % */ 197 unsigned char slottime; /* Delay to wait on persistence hit */ 198 unsigned char tailtime; /* Delay after last byte written */ 199 unsigned char fulldup; /* Full Duplex mode 0=CSMA 1=DUP 2=ALWAYS KEYED */ 200 unsigned char waittime; /* Waittime before any transmit attempt */ 201 unsigned int maxkeyup; /* Maximum time to transmit (seconds) */ 202 unsigned int mintime; /* Minimal offtime after MAXKEYUP timeout (seconds) */ 203 unsigned int idletime; /* Maximum idle time in ALWAYS KEYED mode (seconds) */ 204 unsigned int maxdefer; /* Timer for CSMA channel busy limit */ 205 unsigned char tx_inhibit; /* Transmit is not allowed when set */ 206 unsigned char group; /* Group ID for AX.25 TX interlocking */ 207 unsigned char mode; /* 'normal' or 'hwctrl' mode (unused) */ 208 unsigned char softdcd; /* Use DPLL instead of DCD pin for carrier detect */ 209 }; 210 211 212 /* SCC channel structure */ 213 214 struct scc_channel { 215 int init; /* channel exists? */ 216 217 struct net_device *dev; /* link to device control structure */ 218 struct net_device_stats dev_stat;/* device statistics */ 219 220 char brand; /* manufacturer of the board */ 221 long clock; /* used clock */ 222 223 io_port ctrl; /* I/O address of CONTROL register */ 224 io_port data; /* I/O address of DATA register */ 225 io_port special; /* I/O address of special function port */ 226 int irq; /* Number of Interrupt */ 227 228 char option; 229 char enhanced; /* Enhanced SCC support */ 230 231 unsigned char wreg[16]; /* Copy of last written value in WRx */ 232 unsigned char status; /* Copy of R0 at last external interrupt */ 233 unsigned char dcd; /* DCD status */ 234 235 struct scc_kiss kiss; /* control structure for KISS params */ 236 struct scc_stat stat; /* statistical information */ 237 struct scc_modem modem; /* modem information */ 238 239 struct sk_buff_head tx_queue; /* next tx buffer */ 240 struct sk_buff *rx_buff; /* pointer to frame currently received */ 241 struct sk_buff *tx_buff; /* pointer to frame currently transmitted */ 242 243 /* Timer */ 244 struct timer_list tx_t; /* tx timer for this channel */ 245 struct timer_list tx_wdog; /* tx watchdogs */ 246 247 /* Channel lock */ 248 spinlock_t lock; /* Channel guard lock */ 249 }; 250 251 #endif /* defined(__KERNEL__) */ 252 #endif /* defined(_SCC_H) */ 253