1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */
7 #include <linux/sockios.h>
9 /* selection of hardware types */
11 #define PA0HZP 0x00 /* hardware type for PA0HZP SCC card and compatible */
12 #define EAGLE 0x01 /* hardware type for EAGLE card */
13 #define PC100 0x02 /* hardware type for PC100 card */
14 #define PRIMUS 0x04 /* hardware type for PRIMUS-PC (DG9BL) card */
15 #define DRSI 0x08 /* hardware type for DRSI PC*Packet card */
16 #define BAYCOM 0x10 /* hardware type for BayCom (U)SCC */
18 /* DEV ioctl() commands */
21 SIOCSCCRESERVED = SIOCDEVPRIVATE,
32 /* Device parameter control (from WAMPES) */
41 PARAM_SOFTDCD, /* was: PARAM_HW */
46 PARAM_ENDDELAY, /* ??? */
55 PARAM_RETURN = 255 /* reset kiss mode */
58 /* fulldup parameter */
61 KISS_DUPLEX_HALF, /* normal CSMA operation */
62 KISS_DUPLEX_FULL, /* fullduplex, key down trx after transmission */
63 KISS_DUPLEX_LINK, /* fullduplex, key down trx after 'idletime' sec */
64 KISS_DUPLEX_OPTIMA /* fullduplex, let the protocol layer control the hw */
67 /* misc. parameters */
69 #define TIMER_OFF 65535U /* to switch off timers */
70 #define NO_SUCH_PARAM 65534U /* param not implemented */
72 /* HWEVENT parameter */
80 /* channel grouping */
82 #define RXGROUP 0100 /* if set, only tx when all channels clear */
83 #define TXGROUP 0200 /* if set, don't transmit simultaneously */
85 /* Tx/Rx clock sources */
88 CLK_DPLL, /* normal halfduplex operation */
89 CLK_EXTERNAL, /* external clocking (G3RUH/DF9IC modems) */
90 CLK_DIVIDER, /* Rx = DPLL, Tx = divider (fullduplex with */
91 /* modems without clock regeneration */
92 CLK_BRG /* experimental fullduplex mode with DPLL/BRG for */
93 /* MODEMs without clock recovery */
99 TXS_IDLE, /* Transmitter off, no data pending */
100 TXS_BUSY, /* waiting for permission to send / tailtime */
101 TXS_ACTIVE, /* Transmitter on, sending data */
102 TXS_NEWFRAME, /* reset CRC and send (next) frame */
103 TXS_IDLE2, /* Transmitter on, no data pending */
104 TXS_WAIT, /* Waiting for Mintime to expire */
105 TXS_TIMEOUT /* We had a transmission timeout */
108 typedef unsigned long io_port; /* type definition for an 'io port address' */
110 /* SCC statistical information */
113 long rxints; /* Receiver interrupts */
114 long txints; /* Transmitter interrupts */
115 long exints; /* External/status interrupts */
116 long spints; /* Special receiver interrupts */
118 long txframes; /* Packets sent */
119 long rxframes; /* Number of Frames Actually Received */
120 long rxerrs; /* CRC Errors */
121 long txerrs; /* KISS errors */
123 unsigned int nospace; /* "Out of buffers" */
124 unsigned int rx_over; /* Receiver Overruns */
125 unsigned int tx_under; /* Transmitter Underruns */
127 unsigned int tx_state; /* Transmitter state */
128 int tx_queued; /* tx frames enqueued */
130 unsigned int maxqueue; /* allocated tx_buffers */
131 unsigned int bufsize; /* used buffersize */
135 long speed; /* Line speed, bps */
136 char clocksrc; /* 0 = DPLL, 1 = external, 2 = divider */
137 char nrz; /* NRZ instead of NRZI */
140 struct scc_kiss_cmd {
141 int command; /* one of the KISS-Commands defined above */
142 unsigned param; /* KISS-Param */
145 struct scc_hw_config {
146 io_port data_a; /* data port channel A */
147 io_port ctrl_a; /* control port channel A */
148 io_port data_b; /* data port channel B */
149 io_port ctrl_b; /* control port channel B */
150 io_port vector_latch; /* INTACK-Latch (#) */
151 io_port special; /* special function port */
154 long clock; /* clock */
155 char option; /* command for function port */
157 char brand; /* hardware type */
158 char escc; /* use ext. features of a 8580/85180/85280 */
161 /* (#) only one INTACK latch allowed. */
164 struct scc_mem_config {
166 unsigned int bufsize;
169 struct scc_calibrate {
171 unsigned char pattern;
174 #endif /* _UAPI_SCC_H */