1 /* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */
7 /* selection of hardware types */
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 */
16 /* DEV ioctl() commands */
19 SIOCSCCRESERVED = SIOCDEVPRIVATE,
30 /* Device parameter control (from WAMPES) */
39 PARAM_SOFTDCD, /* was: PARAM_HW */
44 PARAM_ENDDELAY, /* ??? */
53 PARAM_RETURN = 255 /* reset kiss mode */
56 /* fulldup parameter */
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 */
65 /* misc. parameters */
67 #define TIMER_OFF 65535U /* to switch off timers */
68 #define NO_SUCH_PARAM 65534U /* param not implemented */
70 /* HWEVENT parameter */
78 /* channel grouping */
80 #define RXGROUP 0100 /* if set, only tx when all channels clear */
81 #define TXGROUP 0200 /* if set, don't transmit simultaneously */
83 /* Tx/Rx 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 */
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 */
106 typedef unsigned long io_port; /* type definition for an 'io port address' */
108 /* SCC statistical information */
111 long rxints; /* Receiver interrupts */
112 long txints; /* Transmitter interrupts */
113 long exints; /* External/status interrupts */
114 long spints; /* Special receiver interrupts */
116 long txframes; /* Packets sent */
117 long rxframes; /* Number of Frames Actually Received */
118 long rxerrs; /* CRC Errors */
119 long txerrs; /* KISS errors */
121 unsigned int nospace; /* "Out of buffers" */
122 unsigned int rx_over; /* Receiver Overruns */
123 unsigned int tx_under; /* Transmitter Underruns */
125 unsigned int tx_state; /* Transmitter state */
126 int tx_queued; /* tx frames enqueued */
128 unsigned int maxqueue; /* allocated tx_buffers */
129 unsigned int bufsize; /* used buffersize */
133 long speed; /* Line speed, bps */
134 char clocksrc; /* 0 = DPLL, 1 = external, 2 = divider */
135 char nrz; /* NRZ instead of NRZI */
138 struct scc_kiss_cmd {
139 int command; /* one of the KISS-Commands defined above */
140 unsigned param; /* KISS-Param */
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 */
152 long clock; /* clock */
153 char option; /* command for function port */
155 char brand; /* hardware type */
156 char escc; /* use ext. features of a 8580/85180/85280 */
159 /* (#) only one INTACK latch allowed. */
162 struct scc_mem_config {
164 unsigned int bufsize;
167 struct scc_calibrate {
169 unsigned char pattern;
174 enum {TX_OFF, TX_ON}; /* command for scc_key_trx() */
176 /* Vector masks in RR2B */
178 #define VECTOR_MASK 0x06
184 #ifdef CONFIG_SCC_DELAY
185 #define Inb(port) inb_p(port)
186 #define Outb(port, val) outb_p(val, port)
188 #define Inb(port) inb(port)
189 #define Outb(port, val) outb(val, port)
192 /* SCC channel control structure for 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 */
212 /* SCC channel structure */
215 int init; /* channel exists? */
217 struct net_device *dev; /* link to device control structure */
218 struct net_device_stats dev_stat;/* device statistics */
220 char brand; /* manufacturer of the board */
221 long clock; /* used clock */
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 */
229 char enhanced; /* Enhanced SCC support */
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 */
235 struct scc_kiss kiss; /* control structure for KISS params */
236 struct scc_stat stat; /* statistical information */
237 struct scc_modem modem; /* modem information */
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 */
244 struct timer_list tx_t; /* tx timer for this channel */
245 struct timer_list tx_wdog; /* tx watchdogs */
248 spinlock_t lock; /* Channel guard lock */
251 #endif /* defined(__KERNEL__) */
252 #endif /* defined(_SCC_H) */