1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 2001 by Sun Microsystems, Inc. 24*0Sstevel@tonic-gate * All rights reserved. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _TTYMUX_H 28*0Sstevel@tonic-gate #define _TTYMUX_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <sys/obpdefs.h> 33*0Sstevel@tonic-gate #include <sys/tty.h> 34*0Sstevel@tonic-gate #include <sys/ttymuxuser.h> 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #ifdef __cplusplus 37*0Sstevel@tonic-gate extern "C" { 38*0Sstevel@tonic-gate #endif 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #define SM_MAX_ABSLEN 24 /* maximum length for the s/w abort sequence */ 41*0Sstevel@tonic-gate #define SM_MIN_ABSLEN 2 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate #define SM_COPYIN 0x1 44*0Sstevel@tonic-gate #define SM_COPYOUT 0x2 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate typedef 47*0Sstevel@tonic-gate struct sm_iocdata { 48*0Sstevel@tonic-gate int sm_iocid; 49*0Sstevel@tonic-gate int sm_nacks; /* number of responses expected */ 50*0Sstevel@tonic-gate int sm_ackcnt; /* number of ACKs received */ 51*0Sstevel@tonic-gate int sm_nakcnt; /* number of NAKs received */ 52*0Sstevel@tonic-gate int sm_acnt; /* number of responses received */ 53*0Sstevel@tonic-gate int sm_acked; /* has the message been acked (only one of them) */ 54*0Sstevel@tonic-gate int sm_policy; /* which policy is used for acknowleding this ioctl */ 55*0Sstevel@tonic-gate uint_t sm_flags; 56*0Sstevel@tonic-gate /* indicates when copyin/out has been sent upstream */ 57*0Sstevel@tonic-gate ulong_t sm_timeval; 58*0Sstevel@tonic-gate } sm_iocdata_t; 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate /* 61*0Sstevel@tonic-gate * Each minor (refered to as a logical device) created by the multiplexor 62*0Sstevel@tonic-gate * maps onto multiple real devices. 63*0Sstevel@tonic-gate * I/O on a logical device is duplicated across multiple real devices. 64*0Sstevel@tonic-gate * i.e. input from any of the real devices (identified by lqs) is funneled 65*0Sstevel@tonic-gate * through the queue identified in the ttycommon field of a logical unit. 66*0Sstevel@tonic-gate * output arriving on the queue identified in the ttycommon field of a logical 67*0Sstevel@tonic-gate * unit is distributed to all real devices identified by lqs. 68*0Sstevel@tonic-gate * 69*0Sstevel@tonic-gate * When a logical unit is open there is a unique queue upstream (identified 70*0Sstevel@tonic-gate * by ttycommon). 71*0Sstevel@tonic-gate * When a real unit is open there is a unique lower queue to the h/w driver 72*0Sstevel@tonic-gate * (identified by ttycommon). 73*0Sstevel@tonic-gate * 74*0Sstevel@tonic-gate * If the control lines on RS232 port for a physical unit are unknown and 75*0Sstevel@tonic-gate * a request for their status has been issued then flags contains the bits 76*0Sstevel@tonic-gate * TIOCM_PEND and tiocmgetid contains the id of the M_IOCTL streams message 77*0Sstevel@tonic-gate * sent down the write queue to obtain the current status (placed in mbits). 78*0Sstevel@tonic-gate */ 79*0Sstevel@tonic-gate typedef 80*0Sstevel@tonic-gate struct sm_uqi { 81*0Sstevel@tonic-gate int sm_lunit; /* logical unit */ 82*0Sstevel@tonic-gate int sm_protocol; /* in use for this protocol */ 83*0Sstevel@tonic-gate uint_t sm_flags; /* flags */ 84*0Sstevel@tonic-gate uint_t sm_mbits; /* consolidated status of modem lines */ 85*0Sstevel@tonic-gate tcflag_t sm_cmask; /* ignore these control bits */ 86*0Sstevel@tonic-gate uint_t sm_policy; /* ioctl response policy */ 87*0Sstevel@tonic-gate struct sm_lqi *sm_lqs; /* lower queues mapped to this lunit */ 88*0Sstevel@tonic-gate int sm_nlqs; 89*0Sstevel@tonic-gate kmutex_t sm_umutex[1]; /* protects uflags */ 90*0Sstevel@tonic-gate kcondvar_t sm_ucv[1]; /* waiting for uflags to change */ 91*0Sstevel@tonic-gate bufcall_id_t sm_ttybid; /* ttycommon bufcall */ 92*0Sstevel@tonic-gate dev_t sm_dev; /* currently attached device */ 93*0Sstevel@tonic-gate int sm_nwaiters; /* no. of threads waiting for carrier */ 94*0Sstevel@tonic-gate queue_t *sm_waitq; /* identity of blocked queue */ 95*0Sstevel@tonic-gate tty_common_t sm_ttycommon[1]; 96*0Sstevel@tonic-gate /* queue common data when is open */ 97*0Sstevel@tonic-gate sm_iocdata_t sm_siocdata; /* active ioctl */ 98*0Sstevel@tonic-gate sm_iocdata_t sm_piocdata; /* active private ioctl */ 99*0Sstevel@tonic-gate } sm_uqi_t; 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate typedef 102*0Sstevel@tonic-gate struct sm_lqi { 103*0Sstevel@tonic-gate struct sm_lqi *sm_nlqi; /* chain units together into lists */ 104*0Sstevel@tonic-gate sm_uqi_t *sm_uqi; /* this lunit and uqi are associated */ 105*0Sstevel@tonic-gate int sm_linkid; /* mux id for the link */ 106*0Sstevel@tonic-gate uint64_t sm_tag; /* tag for the link */ 107*0Sstevel@tonic-gate uint_t sm_flags; /* flags */ 108*0Sstevel@tonic-gate uint_t sm_uqflags; /* written by an upper queue */ 109*0Sstevel@tonic-gate io_mode_t sm_ioflag; /* input and/or output stream */ 110*0Sstevel@tonic-gate int sm_ctrla_abort_on; 111*0Sstevel@tonic-gate int sm_break_abort_on; 112*0Sstevel@tonic-gate uint_t sm_mbits; /* status of the modem control lines */ 113*0Sstevel@tonic-gate tcflag_t sm_cmask; /* ignore these control bits */ 114*0Sstevel@tonic-gate mblk_t *sm_mp; /* mblk for next write */ 115*0Sstevel@tonic-gate bufcall_id_t sm_bid; /* bufcall id */ 116*0Sstevel@tonic-gate bufcall_id_t sm_ttybid; /* ttymodes changed bufcall */ 117*0Sstevel@tonic-gate kmutex_t sm_umutex[1]; /* protects open code */ 118*0Sstevel@tonic-gate kcondvar_t sm_ucv[1]; 119*0Sstevel@tonic-gate dev_info_t *sm_dip; 120*0Sstevel@tonic-gate dev_t sm_dev; 121*0Sstevel@tonic-gate int sm_unit; 122*0Sstevel@tonic-gate unsigned char *sm_hadkadbchar; 123*0Sstevel@tonic-gate char *sm_nachar; 124*0Sstevel@tonic-gate int sm_piocid; 125*0Sstevel@tonic-gate tty_common_t sm_ttycommon[1]; 126*0Sstevel@tonic-gate /* queue common data when open */ 127*0Sstevel@tonic-gate char sm_path[MAXPATHLEN]; 128*0Sstevel@tonic-gate } sm_lqi_t; 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate /* 131*0Sstevel@tonic-gate * This structure maintains the state of the console. 132*0Sstevel@tonic-gate */ 133*0Sstevel@tonic-gate typedef struct console { 134*0Sstevel@tonic-gate dev_t sm_dev; /* the minor node of a console */ 135*0Sstevel@tonic-gate int sm_muxid; /* STREAM's link identifier */ 136*0Sstevel@tonic-gate io_mode_t sm_mode; /* I/O mode */ 137*0Sstevel@tonic-gate boolean_t sm_obp_con; /* is it an OBP console */ 138*0Sstevel@tonic-gate ihandle_t sm_i_ihdl; /* ihandle of the OBP input device */ 139*0Sstevel@tonic-gate ihandle_t sm_o_ihdl; /* ihandle of the OBP output device */ 140*0Sstevel@tonic-gate char *sm_path; /* device tree device path */ 141*0Sstevel@tonic-gate char *sm_alias; /* device path alias */ 142*0Sstevel@tonic-gate } sm_console_t; 143*0Sstevel@tonic-gate 144*0Sstevel@tonic-gate /* 145*0Sstevel@tonic-gate * This structure contains the information for an open device. 146*0Sstevel@tonic-gate * If an instance of it exists it is available as a named pointer: 147*0Sstevel@tonic-gate */ 148*0Sstevel@tonic-gate #define TTYMUXPTR "ttymuxconfig" 149*0Sstevel@tonic-gate 150*0Sstevel@tonic-gate typedef struct mux_state { 151*0Sstevel@tonic-gate 152*0Sstevel@tonic-gate /* protects ttymux configuration */ 153*0Sstevel@tonic-gate kmutex_t sm_cons_mutex; 154*0Sstevel@tonic-gate 155*0Sstevel@tonic-gate /* Information about the standard I/O devices */ 156*0Sstevel@tonic-gate sm_console_t sm_cons_stdin; 157*0Sstevel@tonic-gate sm_console_t sm_cons_stdout; 158*0Sstevel@tonic-gate 159*0Sstevel@tonic-gate /* List of multiplexed serial consoles */ 160*0Sstevel@tonic-gate uint_t sm_cons_cnt; 161*0Sstevel@tonic-gate char *sm_ialias; 162*0Sstevel@tonic-gate char *sm_oalias; 163*0Sstevel@tonic-gate sm_console_t sm_cons_links[TTYMUX_MAX_LINKS]; 164*0Sstevel@tonic-gate 165*0Sstevel@tonic-gate } sm_mux_state_t; 166*0Sstevel@tonic-gate 167*0Sstevel@tonic-gate /* 168*0Sstevel@tonic-gate * Driver instance private information. 169*0Sstevel@tonic-gate */ 170*0Sstevel@tonic-gate typedef 171*0Sstevel@tonic-gate struct sm_ss 172*0Sstevel@tonic-gate { 173*0Sstevel@tonic-gate dev_info_t *sm_dip; /* device tree information */ 174*0Sstevel@tonic-gate uint_t sm_trflag; /* debug and information levels */ 175*0Sstevel@tonic-gate sm_uqi_t *sm_lconsole; /* the current logical console */ 176*0Sstevel@tonic-gate sm_mux_state_t *sm_ms; /* state associated with a console */ 177*0Sstevel@tonic-gate 178*0Sstevel@tonic-gate sm_lqi_t *sm_lqs; 179*0Sstevel@tonic-gate sm_uqi_t *sm_uqs; 180*0Sstevel@tonic-gate uint_t sm_break_abort_on; 181*0Sstevel@tonic-gate uint_t sm_ctrla_abort_on; 182*0Sstevel@tonic-gate 183*0Sstevel@tonic-gate int sm_min_redundancy; 184*0Sstevel@tonic-gate char sm_abs[SM_MAX_ABSLEN]; 185*0Sstevel@tonic-gate 186*0Sstevel@tonic-gate } sm_ss_t; 187*0Sstevel@tonic-gate 188*0Sstevel@tonic-gate #ifdef __cplusplus 189*0Sstevel@tonic-gate } 190*0Sstevel@tonic-gate #endif 191*0Sstevel@tonic-gate 192*0Sstevel@tonic-gate #endif /* _TTYMUX_H */ 193