sio.c revision 58848
151078Speter/*- 251078Speter * Copyright (c) 1991 The Regents of the University of California. 351078Speter * All rights reserved. 451078Speter * 551078Speter * Redistribution and use in source and binary forms, with or without 651078Speter * modification, are permitted provided that the following conditions 751078Speter * are met: 851078Speter * 1. Redistributions of source code must retain the above copyright 951078Speter * notice, this list of conditions and the following disclaimer. 1051078Speter * 2. Redistributions in binary form must reproduce the above copyright 1151078Speter * notice, this list of conditions and the following disclaimer in the 1251078Speter * documentation and/or other materials provided with the distribution. 1351078Speter * 3. All advertising materials mentioning features or use of this software 1451078Speter * must display the following acknowledgement: 1551078Speter * This product includes software developed by the University of 1651078Speter * California, Berkeley and its contributors. 1751078Speter * 4. Neither the name of the University nor the names of its contributors 1851078Speter * may be used to endorse or promote products derived from this software 1951078Speter * without specific prior written permission. 2051078Speter * 2151078Speter * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2251078Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2351078Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2451078Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2551078Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2651078Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2751078Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2851078Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2951078Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3051078Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3151078Speter * SUCH DAMAGE. 3251078Speter * 3351078Speter * $FreeBSD: head/sys/dev/sio/sio.c 58848 2000-03-31 07:09:08Z peter $ 3451078Speter * from: @(#)com.c 7.5 (Berkeley) 5/16/91 3551078Speter * from: i386/isa sio.c,v 1.234 3651078Speter */ 3751078Speter 3851078Speter#include "opt_comconsole.h" 3951078Speter#include "opt_compat.h" 4051078Speter#include "opt_ddb.h" 4151078Speter#include "opt_sio.h" 4254386Simp#include "card.h" 4351078Speter#include "sio.h" 4451078Speter 4551078Speter/* 4651078Speter * Serial driver, based on 386BSD-0.1 com driver. 4751078Speter * Mostly rewritten to use pseudo-DMA. 4851078Speter * Works for National Semiconductor NS8250-NS16550AF UARTs. 4951078Speter * COM driver, based on HP dca driver. 5051078Speter * 5151078Speter * Changes for PC-Card integration: 5251078Speter * - Added PC-Card driver table and handlers 5351078Speter */ 5451078Speter#include <sys/param.h> 5551078Speter#include <sys/systm.h> 5651078Speter#include <sys/reboot.h> 5751078Speter#include <sys/malloc.h> 5851078Speter#include <sys/tty.h> 5951078Speter#include <sys/proc.h> 6051078Speter#include <sys/module.h> 6151078Speter#include <sys/conf.h> 6251078Speter#include <sys/dkstat.h> 6351078Speter#include <sys/fcntl.h> 6451078Speter#include <sys/interrupt.h> 6551078Speter#include <sys/kernel.h> 6651078Speter#include <sys/syslog.h> 6751078Speter#include <sys/sysctl.h> 6851078Speter#include <sys/bus.h> 6951078Speter#include <machine/bus.h> 7051078Speter#include <sys/rman.h> 7158377Sphk#include <sys/timetc.h> 7251078Speter#include <sys/timepps.h> 7351078Speter 7451078Speter#include <isa/isareg.h> 7551078Speter#include <isa/isavar.h> 7651078Speter#include <machine/lock.h> 7751078Speter 7851078Speter#include <machine/clock.h> 7951078Speter#include <machine/ipl.h> 8051078Speter#ifndef SMP 8151078Speter#include <machine/lock.h> 8251078Speter#endif 8351078Speter#include <machine/resource.h> 8451078Speter 8551078Speter#include <isa/sioreg.h> 8651078Speter 8751078Speter#ifdef COM_ESP 8851078Speter#include <isa/ic/esp.h> 8951078Speter#endif 9051078Speter#include <isa/ic/ns16550.h> 9151078Speter 9251078Speter#ifndef __i386__ 9351078Speter#define disable_intr() 9451078Speter#define enable_intr() 9551078Speter#endif 9651078Speter 9751078Speter#ifdef SMP 9851078Speter#define disable_intr() COM_DISABLE_INTR() 9951078Speter#define enable_intr() COM_ENABLE_INTR() 10051078Speter#endif /* SMP */ 10151078Speter 10251078Speter#define LOTS_OF_EVENTS 64 /* helps separate urgent events from input */ 10351078Speter 10451078Speter#define CALLOUT_MASK 0x80 10551078Speter#define CONTROL_MASK 0x60 10651078Speter#define CONTROL_INIT_STATE 0x20 10751078Speter#define CONTROL_LOCK_STATE 0x40 10851078Speter#define DEV_TO_UNIT(dev) (MINOR_TO_UNIT(minor(dev))) 10951078Speter#define MINOR_MAGIC_MASK (CALLOUT_MASK | CONTROL_MASK) 11051078Speter#define MINOR_TO_UNIT(mynor) ((mynor) & ~MINOR_MAGIC_MASK) 11151078Speter 11251078Speter#ifdef COM_MULTIPORT 11351078Speter/* checks in flags for multiport and which is multiport "master chip" 11451078Speter * for a given card 11551078Speter */ 11651078Speter#define COM_ISMULTIPORT(flags) ((flags) & 0x01) 11751078Speter#define COM_MPMASTER(flags) (((flags) >> 8) & 0x0ff) 11851078Speter#define COM_NOTAST4(flags) ((flags) & 0x04) 11951078Speter#endif /* COM_MULTIPORT */ 12051078Speter 12151078Speter#define COM_CONSOLE(flags) ((flags) & 0x10) 12251078Speter#define COM_FORCECONSOLE(flags) ((flags) & 0x20) 12351078Speter#define COM_LLCONSOLE(flags) ((flags) & 0x40) 12451078Speter#define COM_DEBUGGER(flags) ((flags) & 0x80) 12551078Speter#define COM_LOSESOUTINTS(flags) ((flags) & 0x08) 12651078Speter#define COM_NOFIFO(flags) ((flags) & 0x02) 12751078Speter#define COM_ST16650A(flags) ((flags) & 0x20000) 12851078Speter#define COM_C_NOPROBE (0x40000) 12951078Speter#define COM_NOPROBE(flags) ((flags) & COM_C_NOPROBE) 13051078Speter#define COM_C_IIR_TXRDYBUG (0x80000) 13151078Speter#define COM_IIR_TXRDYBUG(flags) ((flags) & COM_C_IIR_TXRDYBUG) 13251078Speter#define COM_FIFOSIZE(flags) (((flags) & 0xff000000) >> 24) 13351078Speter 13451078Speter#define com_scr 7 /* scratch register for 16450-16550 (R/W) */ 13551078Speter 13651078Speter/* 13751078Speter * com state bits. 13851078Speter * (CS_BUSY | CS_TTGO) and (CS_BUSY | CS_TTGO | CS_ODEVREADY) must be higher 13951078Speter * than the other bits so that they can be tested as a group without masking 14051078Speter * off the low bits. 14151078Speter * 14251078Speter * The following com and tty flags correspond closely: 14351078Speter * CS_BUSY = TS_BUSY (maintained by comstart(), siopoll() and 14453344Speter * comstop()) 14551078Speter * CS_TTGO = ~TS_TTSTOP (maintained by comparam() and comstart()) 14651078Speter * CS_CTS_OFLOW = CCTS_OFLOW (maintained by comparam()) 14751078Speter * CS_RTS_IFLOW = CRTS_IFLOW (maintained by comparam()) 14851078Speter * TS_FLUSH is not used. 14951078Speter * XXX I think TIOCSETA doesn't clear TS_TTSTOP when it clears IXON. 15051078Speter * XXX CS_*FLOW should be CF_*FLOW in com->flags (control flags not state). 15151078Speter */ 15251078Speter#define CS_BUSY 0x80 /* output in progress */ 15351078Speter#define CS_TTGO 0x40 /* output not stopped by XOFF */ 15451078Speter#define CS_ODEVREADY 0x20 /* external device h/w ready (CTS) */ 15551078Speter#define CS_CHECKMSR 1 /* check of MSR scheduled */ 15651078Speter#define CS_CTS_OFLOW 2 /* use CTS output flow control */ 15751078Speter#define CS_DTR_OFF 0x10 /* DTR held off */ 15851078Speter#define CS_ODONE 4 /* output completed */ 15951078Speter#define CS_RTS_IFLOW 8 /* use RTS input flow control */ 16051078Speter#define CSE_BUSYCHECK 1 /* siobusycheck() scheduled */ 16151078Speter 16251078Speterstatic char const * const error_desc[] = { 16351078Speter#define CE_OVERRUN 0 16451078Speter "silo overflow", 16551078Speter#define CE_INTERRUPT_BUF_OVERFLOW 1 16651078Speter "interrupt-level buffer overflow", 16751078Speter#define CE_TTY_BUF_OVERFLOW 2 16851078Speter "tty-level buffer overflow", 16951078Speter}; 17051078Speter 17151078Speter#define CE_NTYPES 3 17251078Speter#define CE_RECORD(com, errnum) (++(com)->delta_error_counts[errnum]) 17351078Speter 17451078Speter/* types. XXX - should be elsewhere */ 17551078Spetertypedef u_int Port_t; /* hardware port */ 17651078Spetertypedef u_char bool_t; /* boolean */ 17751078Speter 17851078Speter/* queue of linear buffers */ 17951078Speterstruct lbq { 18051078Speter u_char *l_head; /* next char to process */ 18151078Speter u_char *l_tail; /* one past the last char to process */ 18251078Speter struct lbq *l_next; /* next in queue */ 18351078Speter bool_t l_queued; /* nonzero if queued */ 18451078Speter}; 18551078Speter 18651078Speter/* com device structure */ 18751078Speterstruct com_s { 18851078Speter u_int flags; /* Copy isa device flags */ 18951078Speter u_char state; /* miscellaneous flag bits */ 19051078Speter bool_t active_out; /* nonzero if the callout device is open */ 19151078Speter u_char cfcr_image; /* copy of value written to CFCR */ 19251078Speter#ifdef COM_ESP 19351078Speter bool_t esp; /* is this unit a hayes esp board? */ 19451078Speter#endif 19551078Speter u_char extra_state; /* more flag bits, separate for order trick */ 19651078Speter u_char fifo_image; /* copy of value written to FIFO */ 19751078Speter bool_t hasfifo; /* nonzero for 16550 UARTs */ 19851078Speter bool_t st16650a; /* Is a Startech 16650A or RTS/CTS compat */ 19951078Speter bool_t loses_outints; /* nonzero if device loses output interrupts */ 20051078Speter u_char mcr_image; /* copy of value written to MCR */ 20151078Speter#ifdef COM_MULTIPORT 20251078Speter bool_t multiport; /* is this unit part of a multiport device? */ 20351078Speter#endif /* COM_MULTIPORT */ 20451078Speter bool_t no_irq; /* nonzero if irq is not attached */ 20551078Speter bool_t gone; /* hardware disappeared */ 20651078Speter bool_t poll; /* nonzero if polling is required */ 20751078Speter bool_t poll_output; /* nonzero if polling for output is required */ 20851078Speter int unit; /* unit number */ 20951078Speter int dtr_wait; /* time to hold DTR down on close (* 1/hz) */ 21051078Speter u_int tx_fifo_size; 21151078Speter u_int wopeners; /* # processes waiting for DCD in open() */ 21251078Speter 21351078Speter /* 21451078Speter * The high level of the driver never reads status registers directly 21551078Speter * because there would be too many side effects to handle conveniently. 21651078Speter * Instead, it reads copies of the registers stored here by the 21751078Speter * interrupt handler. 21851078Speter */ 21951078Speter u_char last_modem_status; /* last MSR read by intr handler */ 22051078Speter u_char prev_modem_status; /* last MSR handled by high level */ 22151078Speter 22251078Speter u_char hotchar; /* ldisc-specific char to be handled ASAP */ 22351078Speter u_char *ibuf; /* start of input buffer */ 22451078Speter u_char *ibufend; /* end of input buffer */ 22551078Speter u_char *ibufold; /* old input buffer, to be freed */ 22651078Speter u_char *ihighwater; /* threshold in input buffer */ 22751078Speter u_char *iptr; /* next free spot in input buffer */ 22851078Speter int ibufsize; /* size of ibuf (not include error bytes) */ 22951078Speter int ierroff; /* offset of error bytes in ibuf */ 23051078Speter 23151078Speter struct lbq obufq; /* head of queue of output buffers */ 23251078Speter struct lbq obufs[2]; /* output buffers */ 23351078Speter 23451078Speter Port_t data_port; /* i/o ports */ 23551078Speter#ifdef COM_ESP 23651078Speter Port_t esp_port; 23751078Speter#endif 23851078Speter Port_t int_id_port; 23951078Speter Port_t iobase; 24051078Speter Port_t modem_ctl_port; 24151078Speter Port_t line_status_port; 24251078Speter Port_t modem_status_port; 24351078Speter Port_t intr_ctl_port; /* Ports of IIR register */ 24451078Speter 24551078Speter struct tty *tp; /* cross reference */ 24651078Speter 24751078Speter /* Initial state. */ 24851078Speter struct termios it_in; /* should be in struct tty */ 24951078Speter struct termios it_out; 25051078Speter 25151078Speter /* Lock state. */ 25251078Speter struct termios lt_in; /* should be in struct tty */ 25351078Speter struct termios lt_out; 25451078Speter 25551078Speter bool_t do_timestamp; 25651078Speter bool_t do_dcd_timestamp; 25751078Speter struct timeval timestamp; 25851078Speter struct timeval dcd_timestamp; 25951078Speter struct pps_state pps; 26051078Speter 26151078Speter u_long bytes_in; /* statistics */ 26251078Speter u_long bytes_out; 26351078Speter u_int delta_error_counts[CE_NTYPES]; 26451078Speter u_long error_counts[CE_NTYPES]; 26551078Speter 26651078Speter struct resource *irqres; 26751078Speter struct resource *ioportres; 26854386Simp void *cookie; 26951078Speter 27051078Speter /* 27151078Speter * Data area for output buffers. Someday we should build the output 27251078Speter * buffer queue without copying data. 27351078Speter */ 27451078Speter u_char obuf1[256]; 27551078Speter u_char obuf2[256]; 27651078Speter}; 27751078Speter 27851078Speter#ifdef COM_ESP 27951078Speterstatic int espattach __P((struct com_s *com, Port_t esp_port)); 28051078Speter#endif 28151078Speterstatic int sioattach __P((device_t dev)); 28252471Simpstatic int sio_isa_attach __P((device_t dev)); 28351078Speter 28451078Speterstatic timeout_t siobusycheck; 28551078Speterstatic timeout_t siodtrwakeup; 28651078Speterstatic void comhardclose __P((struct com_s *com)); 28751078Speterstatic void sioinput __P((struct com_s *com)); 28851078Speterstatic void siointr1 __P((struct com_s *com)); 28951078Speterstatic void siointr __P((void *arg)); 29051078Speterstatic int commctl __P((struct com_s *com, int bits, int how)); 29151078Speterstatic int comparam __P((struct tty *tp, struct termios *t)); 29251078Speterstatic swihand_t siopoll; 29351078Speterstatic int sioprobe __P((device_t dev)); 29452471Simpstatic int sio_isa_probe __P((device_t dev)); 29551078Speterstatic void siosettimeout __P((void)); 29651078Speterstatic int siosetwater __P((struct com_s *com, speed_t speed)); 29751078Speterstatic void comstart __P((struct tty *tp)); 29851654Sphkstatic void comstop __P((struct tty *tp, int rw)); 29951078Speterstatic timeout_t comwakeup; 30051078Speterstatic void disc_optim __P((struct tty *tp, struct termios *t, 30151078Speter struct com_s *com)); 30251078Speter 30352471Simp#if NCARD > 0 30452471Simpstatic int sio_pccard_attach __P((device_t dev)); 30554386Simpstatic int sio_pccard_detach __P((device_t dev)); 30652471Simpstatic int sio_pccard_probe __P((device_t dev)); 30752471Simp#endif /* NCARD > 0 */ 30851078Speter 30951078Speterstatic char driver_name[] = "sio"; 31051078Speter 31151078Speter/* table and macro for fast conversion from a unit number to its com struct */ 31251078Speterstatic devclass_t sio_devclass; 31351078Speter#define com_addr(unit) ((struct com_s *) \ 31451078Speter devclass_get_softc(sio_devclass, unit)) 31551078Speter 31652471Simpstatic device_method_t sio_isa_methods[] = { 31751078Speter /* Device interface */ 31852471Simp DEVMETHOD(device_probe, sio_isa_probe), 31952471Simp DEVMETHOD(device_attach, sio_isa_attach), 32051078Speter 32151078Speter { 0, 0 } 32251078Speter}; 32351078Speter 32452471Simpstatic driver_t sio_isa_driver = { 32551078Speter driver_name, 32652471Simp sio_isa_methods, 32751078Speter sizeof(struct com_s), 32851078Speter}; 32951078Speter 33052471Simp#if NCARD > 0 33152471Simpstatic device_method_t sio_pccard_methods[] = { 33252471Simp /* Device interface */ 33352471Simp DEVMETHOD(device_probe, sio_pccard_probe), 33452471Simp DEVMETHOD(device_attach, sio_pccard_attach), 33552471Simp DEVMETHOD(device_detach, sio_pccard_detach), 33652471Simp 33752471Simp { 0, 0 } 33852471Simp}; 33952471Simp 34052471Simpstatic driver_t sio_pccard_driver = { 34152471Simp driver_name, 34252471Simp sio_pccard_methods, 34352471Simp sizeof(struct com_s), 34452471Simp}; 34552471Simp#endif (NCARD > 0) 34652471Simp 34751078Speterstatic d_open_t sioopen; 34851078Speterstatic d_close_t sioclose; 34951078Speterstatic d_read_t sioread; 35051078Speterstatic d_write_t siowrite; 35151078Speterstatic d_ioctl_t sioioctl; 35251078Speter 35351078Speter#define CDEV_MAJOR 28 35451078Speterstatic struct cdevsw sio_cdevsw = { 35551078Speter /* open */ sioopen, 35651078Speter /* close */ sioclose, 35751078Speter /* read */ sioread, 35851078Speter /* write */ siowrite, 35951078Speter /* ioctl */ sioioctl, 36051654Sphk /* poll */ ttypoll, 36151078Speter /* mmap */ nommap, 36251078Speter /* strategy */ nostrategy, 36351078Speter /* name */ driver_name, 36451078Speter /* maj */ CDEV_MAJOR, 36551078Speter /* dump */ nodump, 36651078Speter /* psize */ nopsize, 36751078Speter /* flags */ D_TTY, 36851078Speter /* bmaj */ -1 36951078Speter}; 37051078Speter 37151078Speterint comconsole = -1; 37251078Speterstatic volatile speed_t comdefaultrate = CONSPEED; 37351078Speter#ifdef __alpha__ 37451078Speterstatic volatile speed_t gdbdefaultrate = CONSPEED; 37551078Speter#endif 37651078Speterstatic u_int com_events; /* input chars + weighted output completions */ 37751078Speterstatic Port_t siocniobase; 37851078Speterstatic int siocnunit; 37951078Speterstatic Port_t siogdbiobase; 38051078Speterstatic int siogdbunit = -1; 38151078Speterstatic bool_t sio_registered; 38251078Speterstatic int sio_timeout; 38351078Speterstatic int sio_timeouts_until_log; 38451078Speterstatic struct callout_handle sio_timeout_handle 38551078Speter = CALLOUT_HANDLE_INITIALIZER(&sio_timeout_handle); 38653344Speterstatic int sio_numunits; 38751078Speter 38851078Speterstatic struct speedtab comspeedtab[] = { 38951078Speter { 0, 0 }, 39051078Speter { 50, COMBRD(50) }, 39151078Speter { 75, COMBRD(75) }, 39251078Speter { 110, COMBRD(110) }, 39351078Speter { 134, COMBRD(134) }, 39451078Speter { 150, COMBRD(150) }, 39551078Speter { 200, COMBRD(200) }, 39651078Speter { 300, COMBRD(300) }, 39751078Speter { 600, COMBRD(600) }, 39851078Speter { 1200, COMBRD(1200) }, 39951078Speter { 1800, COMBRD(1800) }, 40051078Speter { 2400, COMBRD(2400) }, 40151078Speter { 4800, COMBRD(4800) }, 40251078Speter { 9600, COMBRD(9600) }, 40351078Speter { 19200, COMBRD(19200) }, 40451078Speter { 38400, COMBRD(38400) }, 40551078Speter { 57600, COMBRD(57600) }, 40651078Speter { 115200, COMBRD(115200) }, 40751078Speter { -1, -1 } 40851078Speter}; 40951078Speter 41051078Speter#ifdef COM_ESP 41151078Speter/* XXX configure this properly. */ 41251078Speterstatic Port_t likely_com_ports[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, }; 41351078Speterstatic Port_t likely_esp_ports[] = { 0x140, 0x180, 0x280, 0 }; 41451078Speter#endif 41551078Speter 41651078Speter/* 41751078Speter * handle sysctl read/write requests for console speed 41851078Speter * 41951078Speter * In addition to setting comdefaultrate for I/O through /dev/console, 42051078Speter * also set the initial and lock values for the /dev/ttyXX device 42151078Speter * if there is one associated with the console. Finally, if the /dev/tty 42251078Speter * device has already been open, change the speed on the open running port 42351078Speter * itself. 42451078Speter */ 42551078Speter 42651078Speterstatic int 42751078Spetersysctl_machdep_comdefaultrate SYSCTL_HANDLER_ARGS 42851078Speter{ 42951078Speter int error, s; 43051078Speter speed_t newspeed; 43151078Speter struct com_s *com; 43251078Speter struct tty *tp; 43351078Speter 43451078Speter newspeed = comdefaultrate; 43551078Speter 43651078Speter error = sysctl_handle_opaque(oidp, &newspeed, sizeof newspeed, req); 43751078Speter if (error || !req->newptr) 43851078Speter return (error); 43951078Speter 44051078Speter comdefaultrate = newspeed; 44151078Speter 44251078Speter if (comconsole < 0) /* serial console not selected? */ 44351078Speter return (0); 44451078Speter 44551078Speter com = com_addr(comconsole); 44657915Simp if (com == NULL) 44751078Speter return (ENXIO); 44851078Speter 44951078Speter /* 45051078Speter * set the initial and lock rates for /dev/ttydXX and /dev/cuaXX 45151078Speter * (note, the lock rates really are boolean -- if non-zero, disallow 45251078Speter * speed changes) 45351078Speter */ 45451078Speter com->it_in.c_ispeed = com->it_in.c_ospeed = 45551078Speter com->lt_in.c_ispeed = com->lt_in.c_ospeed = 45651078Speter com->it_out.c_ispeed = com->it_out.c_ospeed = 45751078Speter com->lt_out.c_ispeed = com->lt_out.c_ospeed = comdefaultrate; 45851078Speter 45951078Speter /* 46051078Speter * if we're open, change the running rate too 46151078Speter */ 46251078Speter tp = com->tp; 46351078Speter if (tp && (tp->t_state & TS_ISOPEN)) { 46451078Speter tp->t_termios.c_ispeed = 46551078Speter tp->t_termios.c_ospeed = comdefaultrate; 46651078Speter s = spltty(); 46751078Speter error = comparam(tp, &tp->t_termios); 46851078Speter splx(s); 46951078Speter } 47051078Speter return error; 47151078Speter} 47251078Speter 47351078SpeterSYSCTL_PROC(_machdep, OID_AUTO, conspeed, CTLTYPE_INT | CTLFLAG_RW, 47451078Speter 0, 0, sysctl_machdep_comdefaultrate, "I", ""); 47551078Speter 47653344Speter#define SET_FLAG(dev, bit) device_set_flags(dev, device_get_flags(dev) | (bit)) 47753344Speter#define CLR_FLAG(dev, bit) device_set_flags(dev, device_get_flags(dev) & ~(bit)) 47853344Speter 47951078Speter#if NCARD > 0 48052471Simpstatic int 48152471Simpsio_pccard_probe(dev) 48252471Simp device_t dev; 48351078Speter{ 48454386Simp /* Do not probe IRQ - pccard doesn't turn on the interrupt line */ 48554386Simp /* until bus_setup_intr */ 48653344Speter SET_FLAG(dev, COM_C_NOPROBE); 48753344Speter 48852471Simp return (sioprobe(dev)); 48952471Simp} 49051078Speter 49152471Simpstatic int 49252471Simpsio_pccard_attach(dev) 49352471Simp device_t dev; 49452471Simp{ 49552471Simp return (sioattach(dev)); 49651078Speter} 49751078Speter 49851078Speter/* 49952471Simp * sio_detach - unload the driver and clear the table. 50051078Speter * XXX TODO: 50151078Speter * This is usually called when the card is ejected, but 50251078Speter * can be caused by a modunload of a controller driver. 50351078Speter * The idea is to reset the driver's view of the device 50451078Speter * and ensure that any driver entry points such as 50551078Speter * read and write do not hang. 50651078Speter */ 50753978Simpstatic int 50852471Simpsio_pccard_detach(dev) 50952471Simp device_t dev; 51051078Speter{ 51151078Speter struct com_s *com; 51251078Speter 51352471Simp com = (struct com_s *) device_get_softc(dev); 51457915Simp if (com == NULL) { 51552471Simp device_printf(dev, "NULL com in siounload\n"); 51654386Simp return (0); 51751078Speter } 51857915Simp if (com->iobase == 0) { 51952471Simp device_printf(dev, "already unloaded!\n"); 52054386Simp return (0); 52151078Speter } 52254386Simp com->gone = 1; 52354386Simp if (com->irqres) { 52454386Simp bus_teardown_intr(dev, com->irqres, com->cookie); 52554386Simp bus_release_resource(dev, SYS_RES_IRQ, 0, com->irqres); 52654386Simp } 52754386Simp if (com->ioportres) 52854386Simp bus_release_resource(dev, SYS_RES_IOPORT, 0, com->ioportres); 52951078Speter if (com->tp && (com->tp->t_state & TS_ISOPEN)) { 53057915Simp device_printf(dev, "still open, forcing close\n"); 53151078Speter com->tp->t_gen++; 53251078Speter ttyclose(com->tp); 53351078Speter ttwakeup(com->tp); 53451078Speter ttwwakeup(com->tp); 53551078Speter } else { 53651078Speter if (com->ibuf != NULL) 53751078Speter free(com->ibuf, M_DEVBUF); 53851078Speter } 53957915Simp device_printf(dev, "unloaded\n"); 54053978Simp return (0); 54151078Speter} 54251078Speter#endif /* NCARD > 0 */ 54351078Speter 54451078Speter 54551078Speterstatic struct isa_pnp_id sio_ids[] = { 54651078Speter {0x0005d041, "Standard PC COM port"}, /* PNP0500 */ 54751078Speter {0x0105d041, "16550A-compatible COM port"}, /* PNP0501 */ 54851078Speter {0x0205d041, "Multiport serial device (non-intelligent 16550)"}, /* PNP0502 */ 54951078Speter {0x1005d041, "Generic IRDA-compatible device"}, /* PNP0510 */ 55051078Speter {0x1105d041, "Generic IRDA-compatible device"}, /* PNP0511 */ 55154944Speter /* Devices that do not have a compatid */ 55254944Speter {0x7602a904, NULL}, /* AEI0276 - 56K v.90 Fax Modem (LKT) */ 55354944Speter {0x00007905, NULL}, /* AKY0000 - 56K Plug&Play Modem */ 55454944Speter {0x01405407, NULL}, /* AZT4001 - AZT3000 PnP SOUND DEVICE, MODEM */ 55554944Speter {0x56039008, NULL}, /* BDP0356 - Best Data 56x2 */ 55654944Speter {0x36339008, NULL}, /* BDP3336 - Best Data Prods. 336F */ 55754944Speter {0x0014490a, NULL}, /* BRI1400 - Boca 33.6 PnP */ 55854944Speter {0x0015490a, NULL}, /* BRI1500 - Internal Fax Data */ 55954944Speter {0x0034490a, NULL}, /* BRI3400 - Internal ACF Modem */ 56054944Speter {0x00b4490a, NULL}, /* BRIB400 - Boca 56k PnP */ 56154944Speter {0x0030320d, NULL}, /* CIR3000 - Cirrus Logic V43 */ 56256229Speter {0x0100440e, NULL}, /* CRD0001 - Cardinal MVP288IV ? */ 56354944Speter {0x1200c31e, NULL}, /* GVC0012 - VF1128HV-R9 (win modem?) */ 56454944Speter {0x0303c31e, NULL}, /* GVC0303 - MaxTech 33.6 PnP D/F/V */ 56555124Speter {0x0505c31e, NULL}, /* GVC0505 - GVC 56k Faxmodem */ 56654944Speter {0x0050c31e, NULL}, /* GVC5000 - some GVC modem */ 56754944Speter {0x3800f91e, NULL}, /* GWY0038 - Telepath with v.90 */ 56854944Speter {0x9062f91e, NULL}, /* GWY6290 - Telepath with x2 Technology */ 56954944Speter {0x0000f435, NULL}, /* MOT0000 - Motorola ModemSURFR 33.6 Intern */ 57054944Speter {0x5015f435, NULL}, /* MOT1550 - Motorola ModemSURFR 56K Modem */ 57154944Speter {0xf015f435, NULL}, /* MOT15F0 - Motorola VoiceSURFR 56K Modem */ 57254944Speter {0x6045f435, NULL}, /* MOT4560 - Motorola ? */ 57354944Speter {0x61e7a338, NULL}, /* NECE761 - 33.6Modem */ 57454944Speter {0x39804f3f, NULL}, /* OZO8039 - Zoom 56k flex */ 57557769Speter {0x3024a341, NULL}, /* PMC2430 - Pace 56 Voice Internal Modem */ 57654944Speter {0x1000eb49, NULL}, /* ROK0010 - Rockwell ? */ 57754944Speter {0x5002734a, NULL}, /* RSS0250 - 5614Jx3(G) Internal Modem */ 57854944Speter {0xc100ad4d, NULL}, /* SMM00C1 - Leopard 56k PnP */ 57956229Speter {0x9012b04e, NULL}, /* SUP1290 - Supra ? */ 58054944Speter {0x1013b04e, NULL}, /* SUP1310 - SupraExpress 336i PnP */ 58154944Speter {0x8013b04e, NULL}, /* SUP1380 - SupraExpress 288i PnP Voice */ 58254944Speter {0x8113b04e, NULL}, /* SUP1381 - SupraExpress 336i PnP Voice */ 58354944Speter {0x5016b04e, NULL}, /* SUP1650 - Supra 336i Sp Intl */ 58454944Speter {0x7420b04e, NULL}, /* SUP2070 - Supra ? */ 58554944Speter {0x8020b04e, NULL}, /* SUP2080 - Supra ? */ 58654944Speter {0x8420b04e, NULL}, /* SUP2084 - SupraExpress 56i PnP */ 58756229Speter {0x7121b04e, NULL}, /* SUP2171 - SupraExpress 56i Sp? */ 58854944Speter {0x8024b04e, NULL}, /* SUP2480 - Supra ? */ 58954944Speter {0x01007256, NULL}, /* USR0001 - U.S. Robotics Inc., Sportster W */ 59054944Speter {0x02007256, NULL}, /* USR0002 - U.S. Robotics Inc. Sportster 33. */ 59154944Speter {0x04007256, NULL}, /* USR0004 - USR Sportster 14.4k */ 59254944Speter {0x06007256, NULL}, /* USR0006 - USR Sportster 33.6k */ 59356229Speter {0x11007256, NULL}, /* USR0011 - USR ? */ 59454944Speter {0x01017256, NULL}, /* USR0101 - USR ? */ 59554944Speter {0x30207256, NULL}, /* USR2030 - U.S.Robotics Inc. Sportster 560 */ 59654944Speter {0x50207256, NULL}, /* USR2050 - U.S.Robotics Inc. Sportster 33. */ 59754944Speter {0x70207256, NULL}, /* USR2070 - U.S.Robotics Inc. Sportster 560 */ 59854944Speter {0x30307256, NULL}, /* USR3030 - U.S. Robotics 56K FAX INT */ 59954944Speter {0x31307256, NULL}, /* USR3031 - U.S. Robotics 56K FAX INT */ 60058848Speter {0x50307256, NULL}, /* USR3050 - U.S. Robotics 56K FAX INT */ 60154944Speter {0x70307256, NULL}, /* USR3070 - U.S. Robotics 56K Voice INT */ 60256229Speter {0x90307256, NULL}, /* USR3090 - USR ? */ 60354944Speter {0x90917256, NULL}, /* USR9190 - USR 56k Voice INT */ 60454944Speter {0x0300695c, NULL}, /* WCI0003 - Fax/Voice/Modem/Speakphone/Asvd */ 60554944Speter {0x61f7896a, NULL}, /* ZTIF761 - Zoom ComStar 33.6 */ 60651078Speter {0} 60751078Speter}; 60851078Speter 60956229Speter 61056229Speter 61151078Speterstatic int 61252471Simpsio_isa_probe(dev) 61352471Simp device_t dev; 61452471Simp{ 61552471Simp /* Check isapnp ids */ 61652471Simp if (ISA_PNP_PROBE(device_get_parent(dev), dev, sio_ids) == ENXIO) 61752471Simp return (ENXIO); 61852471Simp return (sioprobe(dev)); 61952471Simp} 62052471Simp 62152471Simpstatic int 62251078Spetersioprobe(dev) 62351078Speter device_t dev; 62451078Speter{ 62553344Speter#if 0 62651078Speter static bool_t already_init; 62753344Speter device_t xdev; 62853344Speter#endif 62951078Speter bool_t failures[10]; 63051078Speter int fn; 63151078Speter device_t idev; 63251078Speter Port_t iobase; 63351078Speter intrmask_t irqmap[4]; 63451078Speter intrmask_t irqs; 63551078Speter u_char mcr_image; 63651078Speter int result; 63754206Speter u_long xirq; 63851088Speter u_int flags = device_get_flags(dev); 63951078Speter int rid; 64051078Speter struct resource *port; 64151078Speter 64251078Speter rid = 0; 64351078Speter port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 64451078Speter 0, ~0, IO_COMSIZE, RF_ACTIVE); 64551078Speter if (!port) 64657915Simp return (ENXIO); 64751078Speter 64853344Speter#if 0 64953344Speter /* 65053344Speter * XXX this is broken - when we are first called, there are no 65153344Speter * previously configured IO ports. We could hard code 65253344Speter * 0x3f8, 0x2f8, 0x3e8, 0x2e8 etc but that's probably worse. 65353344Speter * This code has been doing nothing since the conversion since 65453344Speter * "count" is zero the first time around. 65553344Speter */ 65651078Speter if (!already_init) { 65751078Speter /* 65851078Speter * Turn off MCR_IENABLE for all likely serial ports. An unused 65951078Speter * port with its MCR_IENABLE gate open will inhibit interrupts 66051078Speter * from any used port that shares the interrupt vector. 66151078Speter * XXX the gate enable is elsewhere for some multiports. 66251078Speter */ 66351078Speter device_t *devs; 66453344Speter int count, i, xioport; 66551078Speter 66651078Speter devclass_get_devices(sio_devclass, &devs, &count); 66751078Speter for (i = 0; i < count; i++) { 66851078Speter xdev = devs[i]; 66954194Speter if (device_is_enabled(xdev) && 67054194Speter bus_get_resource(xdev, SYS_RES_IOPORT, 0, &xioport, 67154194Speter NULL) == 0) 67253344Speter outb(xioport + com_mcr, 0); 67351078Speter } 67451078Speter free(devs, M_TEMP); 67551078Speter already_init = TRUE; 67651078Speter } 67753344Speter#endif 67851078Speter 67951078Speter if (COM_LLCONSOLE(flags)) { 68051078Speter printf("sio%d: reserved for low-level i/o\n", 68151078Speter device_get_unit(dev)); 68256788Sbde bus_release_resource(dev, SYS_RES_IOPORT, rid, port); 68351078Speter return (ENXIO); 68451078Speter } 68551078Speter 68651078Speter /* 68751078Speter * If the device is on a multiport card and has an AST/4 68851078Speter * compatible interrupt control register, initialize this 68951078Speter * register and prepare to leave MCR_IENABLE clear in the mcr. 69051078Speter * Otherwise, prepare to set MCR_IENABLE in the mcr. 69151078Speter * Point idev to the device struct giving the correct id_irq. 69251078Speter * This is the struct for the master device if there is one. 69351078Speter */ 69451078Speter idev = dev; 69551078Speter mcr_image = MCR_IENABLE; 69651078Speter#ifdef COM_MULTIPORT 69757234Sbde if (COM_ISMULTIPORT(flags)) { 69854206Speter Port_t xiobase; 69954206Speter u_long io; 70054206Speter 70151078Speter idev = devclass_get_device(sio_devclass, COM_MPMASTER(flags)); 70251078Speter if (idev == NULL) { 70351078Speter printf("sio%d: master device %d not configured\n", 70451078Speter device_get_unit(dev), COM_MPMASTER(flags)); 70551078Speter idev = dev; 70651078Speter } 70757234Sbde if (!COM_NOTAST4(flags)) { 70857234Sbde if (bus_get_resource(idev, SYS_RES_IOPORT, 0, &io, 70957234Sbde NULL) == 0) { 71057234Sbde xiobase = io; 71157234Sbde if (bus_get_resource(idev, SYS_RES_IRQ, 0, 71257234Sbde NULL, NULL) == 0) 71357234Sbde outb(xiobase + com_scr, 0x80); 71457234Sbde else 71557234Sbde outb(xiobase + com_scr, 0); 71657234Sbde } 71757234Sbde mcr_image = 0; 71851078Speter } 71951078Speter } 72051078Speter#endif /* COM_MULTIPORT */ 72154194Speter if (bus_get_resource(idev, SYS_RES_IRQ, 0, NULL, NULL) != 0) 72251078Speter mcr_image = 0; 72351078Speter 72451078Speter bzero(failures, sizeof failures); 72551078Speter iobase = rman_get_start(port); 72651078Speter 72751078Speter /* 72851078Speter * We don't want to get actual interrupts, just masked ones. 72951078Speter * Interrupts from this line should already be masked in the ICU, 73051078Speter * but mask them in the processor as well in case there are some 73151078Speter * (misconfigured) shared interrupts. 73251078Speter */ 73351078Speter disable_intr(); 73451078Speter/* EXTRA DELAY? */ 73551078Speter 73651078Speter /* 73751078Speter * Initialize the speed and the word size and wait long enough to 73851078Speter * drain the maximum of 16 bytes of junk in device output queues. 73951078Speter * The speed is undefined after a master reset and must be set 74051078Speter * before relying on anything related to output. There may be 74151078Speter * junk after a (very fast) soft reboot and (apparently) after 74251078Speter * master reset. 74351078Speter * XXX what about the UART bug avoided by waiting in comparam()? 74451078Speter * We don't want to to wait long enough to drain at 2 bps. 74551078Speter */ 74651078Speter if (iobase == siocniobase) 74751078Speter DELAY((16 + 1) * 1000000 / (comdefaultrate / 10)); 74851078Speter else { 74951078Speter outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); 75051078Speter outb(iobase + com_dlbl, COMBRD(SIO_TEST_SPEED) & 0xff); 75151078Speter outb(iobase + com_dlbh, (u_int) COMBRD(SIO_TEST_SPEED) >> 8); 75251078Speter outb(iobase + com_cfcr, CFCR_8BITS); 75351078Speter DELAY((16 + 1) * 1000000 / (SIO_TEST_SPEED / 10)); 75451078Speter } 75551078Speter 75651078Speter /* 75751078Speter * Enable the interrupt gate and disable device interupts. This 75851078Speter * should leave the device driving the interrupt line low and 75951078Speter * guarantee an edge trigger if an interrupt can be generated. 76051078Speter */ 76151078Speter/* EXTRA DELAY? */ 76251078Speter outb(iobase + com_mcr, mcr_image); 76351078Speter outb(iobase + com_ier, 0); 76451078Speter DELAY(1000); /* XXX */ 76551078Speter irqmap[0] = isa_irq_pending(); 76651078Speter 76751078Speter /* 76851078Speter * Attempt to set loopback mode so that we can send a null byte 76951078Speter * without annoying any external device. 77051078Speter */ 77151078Speter/* EXTRA DELAY? */ 77251078Speter outb(iobase + com_mcr, mcr_image | MCR_LOOPBACK); 77351078Speter 77451078Speter /* 77551078Speter * Attempt to generate an output interrupt. On 8250's, setting 77651078Speter * IER_ETXRDY generates an interrupt independent of the current 77751078Speter * setting and independent of whether the THR is empty. On 16450's, 77851078Speter * setting IER_ETXRDY generates an interrupt independent of the 77951078Speter * current setting. On 16550A's, setting IER_ETXRDY only 78051078Speter * generates an interrupt when IER_ETXRDY is not already set. 78151078Speter */ 78251078Speter outb(iobase + com_ier, IER_ETXRDY); 78351078Speter 78451078Speter /* 78551078Speter * On some 16x50 incompatibles, setting IER_ETXRDY doesn't generate 78651078Speter * an interrupt. They'd better generate one for actually doing 78751078Speter * output. Loopback may be broken on the same incompatibles but 78851078Speter * it's unlikely to do more than allow the null byte out. 78951078Speter */ 79051078Speter outb(iobase + com_data, 0); 79151078Speter DELAY((1 + 2) * 1000000 / (SIO_TEST_SPEED / 10)); 79251078Speter 79351078Speter /* 79451078Speter * Turn off loopback mode so that the interrupt gate works again 79551078Speter * (MCR_IENABLE was hidden). This should leave the device driving 79651078Speter * an interrupt line high. It doesn't matter if the interrupt 79751078Speter * line oscillates while we are not looking at it, since interrupts 79851078Speter * are disabled. 79951078Speter */ 80051078Speter/* EXTRA DELAY? */ 80151078Speter outb(iobase + com_mcr, mcr_image); 80251078Speter 80351078Speter /* 80452471Simp * Some pcmcia cards have the "TXRDY bug", so we check everyone 80551078Speter * for IIR_TXRDY implementation ( Palido 321s, DC-1S... ) 80651078Speter */ 80753370Speter if (COM_NOPROBE(flags)) { 80853370Speter /* Reading IIR register twice */ 80953370Speter for (fn = 0; fn < 2; fn ++) { 81053370Speter DELAY(10000); 81153370Speter failures[6] = inb(iobase + com_iir); 81253370Speter } 81353370Speter /* Check IIR_TXRDY clear ? */ 81453370Speter result = 0; 81553370Speter if (failures[6] & IIR_TXRDY) { 81653370Speter /* Nop, Double check with clearing IER */ 81753370Speter outb(iobase + com_ier, 0); 81853370Speter if (inb(iobase + com_iir) & IIR_NOPEND) { 81953370Speter /* Ok. we're familia this gang */ 82053370Speter SET_FLAG(dev, COM_C_IIR_TXRDYBUG); 82153370Speter } else { 82253370Speter /* Unknown, Just omit this chip.. XXX */ 82353370Speter result = ENXIO; 82453370Speter } 82551078Speter } else { 82653370Speter /* OK. this is well-known guys */ 82753370Speter CLR_FLAG(dev, COM_C_IIR_TXRDYBUG); 82851078Speter } 82953344Speter outb(iobase + com_cfcr, CFCR_8BITS); 83053344Speter enable_intr(); 83153344Speter bus_release_resource(dev, SYS_RES_IOPORT, rid, port); 83253344Speter return (iobase == siocniobase ? 0 : result); 83353344Speter } 83453344Speter 83551078Speter /* 83651078Speter * Check that 83751078Speter * o the CFCR, IER and MCR in UART hold the values written to them 83851078Speter * (the values happen to be all distinct - this is good for 83951078Speter * avoiding false positive tests from bus echoes). 84051078Speter * o an output interrupt is generated and its vector is correct. 84151078Speter * o the interrupt goes away when the IIR in the UART is read. 84251078Speter */ 84351078Speter/* EXTRA DELAY? */ 84451078Speter failures[0] = inb(iobase + com_cfcr) - CFCR_8BITS; 84551078Speter failures[1] = inb(iobase + com_ier) - IER_ETXRDY; 84651078Speter failures[2] = inb(iobase + com_mcr) - mcr_image; 84751078Speter DELAY(10000); /* Some internal modems need this time */ 84851078Speter irqmap[1] = isa_irq_pending(); 84951078Speter failures[4] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_TXRDY; 85051078Speter DELAY(1000); /* XXX */ 85151078Speter irqmap[2] = isa_irq_pending(); 85251078Speter failures[6] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_NOPEND; 85351078Speter 85451078Speter /* 85551078Speter * Turn off all device interrupts and check that they go off properly. 85651078Speter * Leave MCR_IENABLE alone. For ports without a master port, it gates 85751078Speter * the OUT2 output of the UART to 85851078Speter * the ICU input. Closing the gate would give a floating ICU input 85951078Speter * (unless there is another device driving it) and spurious interrupts. 86051078Speter * (On the system that this was first tested on, the input floats high 86151078Speter * and gives a (masked) interrupt as soon as the gate is closed.) 86251078Speter */ 86351078Speter outb(iobase + com_ier, 0); 86451078Speter outb(iobase + com_cfcr, CFCR_8BITS); /* dummy to avoid bus echo */ 86551078Speter failures[7] = inb(iobase + com_ier); 86651078Speter DELAY(1000); /* XXX */ 86751078Speter irqmap[3] = isa_irq_pending(); 86851078Speter failures[9] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_NOPEND; 86951078Speter 87051078Speter enable_intr(); 87151078Speter 87251078Speter irqs = irqmap[1] & ~irqmap[0]; 87354194Speter if (bus_get_resource(idev, SYS_RES_IRQ, 0, &xirq, NULL) == 0 && 87454194Speter ((1 << xirq) & irqs) == 0) 87551078Speter printf( 87654206Speter "sio%d: configured irq %ld not in bitmap of probed irqs %#x\n", 87753344Speter device_get_unit(dev), xirq, irqs); 87851078Speter if (bootverbose) 87951078Speter printf("sio%d: irq maps: %#x %#x %#x %#x\n", 88051078Speter device_get_unit(dev), 88151078Speter irqmap[0], irqmap[1], irqmap[2], irqmap[3]); 88251078Speter 88351078Speter result = 0; 88451078Speter for (fn = 0; fn < sizeof failures; ++fn) 88551078Speter if (failures[fn]) { 88651078Speter outb(iobase + com_mcr, 0); 88751078Speter result = ENXIO; 88851078Speter if (bootverbose) { 88951078Speter printf("sio%d: probe failed test(s):", 89051078Speter device_get_unit(dev)); 89151078Speter for (fn = 0; fn < sizeof failures; ++fn) 89251078Speter if (failures[fn]) 89351078Speter printf(" %d", fn); 89451078Speter printf("\n"); 89551078Speter } 89651078Speter break; 89751078Speter } 89851078Speter bus_release_resource(dev, SYS_RES_IOPORT, rid, port); 89951078Speter return (iobase == siocniobase ? 0 : result); 90051078Speter} 90151078Speter 90251078Speter#ifdef COM_ESP 90351078Speterstatic int 90451078Speterespattach(com, esp_port) 90551078Speter struct com_s *com; 90651078Speter Port_t esp_port; 90751078Speter{ 90851078Speter u_char dips; 90951078Speter u_char val; 91051078Speter 91151078Speter /* 91251078Speter * Check the ESP-specific I/O port to see if we're an ESP 91351078Speter * card. If not, return failure immediately. 91451078Speter */ 91551078Speter if ((inb(esp_port) & 0xf3) == 0) { 91651078Speter printf(" port 0x%x is not an ESP board?\n", esp_port); 91751078Speter return (0); 91851078Speter } 91951078Speter 92051078Speter /* 92151078Speter * We've got something that claims to be a Hayes ESP card. 92251078Speter * Let's hope so. 92351078Speter */ 92451078Speter 92551078Speter /* Get the dip-switch configuration */ 92651078Speter outb(esp_port + ESP_CMD1, ESP_GETDIPS); 92751078Speter dips = inb(esp_port + ESP_STATUS1); 92851078Speter 92951078Speter /* 93051078Speter * Bits 0,1 of dips say which COM port we are. 93151078Speter */ 93251078Speter if (com->iobase == likely_com_ports[dips & 0x03]) 93351078Speter printf(" : ESP"); 93451078Speter else { 93551078Speter printf(" esp_port has com %d\n", dips & 0x03); 93651078Speter return (0); 93751078Speter } 93851078Speter 93951078Speter /* 94051078Speter * Check for ESP version 2.0 or later: bits 4,5,6 = 010. 94151078Speter */ 94251078Speter outb(esp_port + ESP_CMD1, ESP_GETTEST); 94351078Speter val = inb(esp_port + ESP_STATUS1); /* clear reg 1 */ 94451078Speter val = inb(esp_port + ESP_STATUS2); 94551078Speter if ((val & 0x70) < 0x20) { 94651078Speter printf("-old (%o)", val & 0x70); 94751078Speter return (0); 94851078Speter } 94951078Speter 95051078Speter /* 95151078Speter * Check for ability to emulate 16550: bit 7 == 1 95251078Speter */ 95351078Speter if ((dips & 0x80) == 0) { 95451078Speter printf(" slave"); 95551078Speter return (0); 95651078Speter } 95751078Speter 95851078Speter /* 95951078Speter * Okay, we seem to be a Hayes ESP card. Whee. 96051078Speter */ 96151078Speter com->esp = TRUE; 96251078Speter com->esp_port = esp_port; 96351078Speter return (1); 96451078Speter} 96551078Speter#endif /* COM_ESP */ 96651078Speter 96751078Speterstatic int 96852471Simpsio_isa_attach(dev) 96952471Simp device_t dev; 97052471Simp{ 97152471Simp return (sioattach(dev)); 97252471Simp} 97352471Simp 97452471Simpstatic int 97551078Spetersioattach(dev) 97651078Speter device_t dev; 97751078Speter{ 97851078Speter struct com_s *com; 97951078Speter#ifdef COM_ESP 98051078Speter Port_t *espp; 98151078Speter#endif 98251078Speter Port_t iobase; 98351078Speter int unit; 98453344Speter u_int flags; 98551078Speter int rid; 98651078Speter struct resource *port; 98753344Speter int ret; 98851078Speter 98951078Speter rid = 0; 99051078Speter port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 99151078Speter 0, ~0, IO_COMSIZE, RF_ACTIVE); 99251078Speter if (!port) 99357915Simp return (ENXIO); 99451078Speter 99551078Speter iobase = rman_get_start(port); 99651078Speter unit = device_get_unit(dev); 99751078Speter com = device_get_softc(dev); 99853344Speter flags = device_get_flags(dev); 99951078Speter 100053344Speter if (unit >= sio_numunits) 100153344Speter sio_numunits = unit + 1; 100251078Speter /* 100351078Speter * sioprobe() has initialized the device registers as follows: 100451078Speter * o cfcr = CFCR_8BITS. 100551078Speter * It is most important that CFCR_DLAB is off, so that the 100651078Speter * data port is not hidden when we enable interrupts. 100751078Speter * o ier = 0. 100851078Speter * Interrupts are only enabled when the line is open. 100951078Speter * o mcr = MCR_IENABLE, or 0 if the port has AST/4 compatible 101051078Speter * interrupt control register or the config specifies no irq. 101151078Speter * Keeping MCR_DTR and MCR_RTS off might stop the external 101251078Speter * device from sending before we are ready. 101351078Speter */ 101451078Speter bzero(com, sizeof *com); 101551078Speter com->unit = unit; 101651078Speter com->ioportres = port; 101751078Speter com->cfcr_image = CFCR_8BITS; 101851078Speter com->dtr_wait = 3 * hz; 101951078Speter com->loses_outints = COM_LOSESOUTINTS(flags) != 0; 102057234Sbde com->no_irq = bus_get_resource(dev, SYS_RES_IRQ, 0, NULL, NULL) != 0; 102151078Speter com->tx_fifo_size = 1; 102251078Speter com->obufs[0].l_head = com->obuf1; 102351078Speter com->obufs[1].l_head = com->obuf2; 102451078Speter 102551078Speter com->iobase = iobase; 102651078Speter com->data_port = iobase + com_data; 102751078Speter com->int_id_port = iobase + com_iir; 102851078Speter com->modem_ctl_port = iobase + com_mcr; 102951078Speter com->mcr_image = inb(com->modem_ctl_port); 103051078Speter com->line_status_port = iobase + com_lsr; 103151078Speter com->modem_status_port = iobase + com_msr; 103251078Speter com->intr_ctl_port = iobase + com_ier; 103351078Speter 103451078Speter /* 103551078Speter * We don't use all the flags from <sys/ttydefaults.h> since they 103651078Speter * are only relevant for logins. It's important to have echo off 103751078Speter * initially so that the line doesn't start blathering before the 103851078Speter * echo flag can be turned off. 103951078Speter */ 104051078Speter com->it_in.c_iflag = 0; 104151078Speter com->it_in.c_oflag = 0; 104251078Speter com->it_in.c_cflag = TTYDEF_CFLAG; 104351078Speter com->it_in.c_lflag = 0; 104451078Speter if (unit == comconsole) { 104551078Speter com->it_in.c_iflag = TTYDEF_IFLAG; 104651078Speter com->it_in.c_oflag = TTYDEF_OFLAG; 104751078Speter com->it_in.c_cflag = TTYDEF_CFLAG | CLOCAL; 104851078Speter com->it_in.c_lflag = TTYDEF_LFLAG; 104951078Speter com->lt_out.c_cflag = com->lt_in.c_cflag = CLOCAL; 105051078Speter com->lt_out.c_ispeed = com->lt_out.c_ospeed = 105151078Speter com->lt_in.c_ispeed = com->lt_in.c_ospeed = 105251078Speter com->it_in.c_ispeed = com->it_in.c_ospeed = comdefaultrate; 105351078Speter } else 105451078Speter com->it_in.c_ispeed = com->it_in.c_ospeed = TTYDEF_SPEED; 105551078Speter if (siosetwater(com, com->it_in.c_ispeed) != 0) { 105651078Speter enable_intr(); 105756788Sbde /* 105856788Sbde * Leave i/o resources allocated if this is a `cn'-level 105956788Sbde * console, so that other devices can't snarf them. 106056788Sbde */ 106156788Sbde if (iobase != siocniobase) 106256788Sbde bus_release_resource(dev, SYS_RES_IOPORT, rid, port); 106356788Sbde return (ENOMEM); 106451078Speter } 106551078Speter enable_intr(); 106651078Speter termioschars(&com->it_in); 106751078Speter com->it_out = com->it_in; 106851078Speter 106951078Speter /* attempt to determine UART type */ 107051078Speter printf("sio%d: type", unit); 107151078Speter 107251078Speter 107351078Speter#ifdef COM_MULTIPORT 107451078Speter if (!COM_ISMULTIPORT(flags) && !COM_IIR_TXRDYBUG(flags)) 107551078Speter#else 107651078Speter if (!COM_IIR_TXRDYBUG(flags)) 107751078Speter#endif 107851078Speter { 107951078Speter u_char scr; 108051078Speter u_char scr1; 108151078Speter u_char scr2; 108251078Speter 108351078Speter scr = inb(iobase + com_scr); 108451078Speter outb(iobase + com_scr, 0xa5); 108551078Speter scr1 = inb(iobase + com_scr); 108651078Speter outb(iobase + com_scr, 0x5a); 108751078Speter scr2 = inb(iobase + com_scr); 108851078Speter outb(iobase + com_scr, scr); 108951078Speter if (scr1 != 0xa5 || scr2 != 0x5a) { 109051078Speter printf(" 8250"); 109151078Speter goto determined_type; 109251078Speter } 109351078Speter } 109451078Speter outb(iobase + com_fifo, FIFO_ENABLE | FIFO_RX_HIGH); 109551078Speter DELAY(100); 109651078Speter com->st16650a = 0; 109751078Speter switch (inb(com->int_id_port) & IIR_FIFO_MASK) { 109851078Speter case FIFO_RX_LOW: 109951078Speter printf(" 16450"); 110051078Speter break; 110151078Speter case FIFO_RX_MEDL: 110251078Speter printf(" 16450?"); 110351078Speter break; 110451078Speter case FIFO_RX_MEDH: 110551078Speter printf(" 16550?"); 110651078Speter break; 110751078Speter case FIFO_RX_HIGH: 110851078Speter if (COM_NOFIFO(flags)) { 110951078Speter printf(" 16550A fifo disabled"); 111051078Speter } else { 111151078Speter com->hasfifo = TRUE; 111251078Speter if (COM_ST16650A(flags)) { 111351078Speter com->st16650a = 1; 111451078Speter com->tx_fifo_size = 32; 111551078Speter printf(" ST16650A"); 111651078Speter } else { 111751078Speter com->tx_fifo_size = COM_FIFOSIZE(flags); 111851078Speter printf(" 16550A"); 111951078Speter } 112051078Speter } 112151078Speter#ifdef COM_ESP 112251078Speter for (espp = likely_esp_ports; *espp != 0; espp++) 112351078Speter if (espattach(com, *espp)) { 112451078Speter com->tx_fifo_size = 1024; 112551078Speter break; 112651078Speter } 112751078Speter#endif 112851078Speter if (!com->st16650a) { 112951078Speter if (!com->tx_fifo_size) 113051078Speter com->tx_fifo_size = 16; 113151078Speter else 113251078Speter printf(" lookalike with %d bytes FIFO", 113351078Speter com->tx_fifo_size); 113451078Speter } 113551078Speter 113651078Speter break; 113751078Speter } 113851078Speter 113951078Speter#ifdef COM_ESP 114051078Speter if (com->esp) { 114151078Speter /* 114251078Speter * Set 16550 compatibility mode. 114351078Speter * We don't use the ESP_MODE_SCALE bit to increase the 114451078Speter * fifo trigger levels because we can't handle large 114551078Speter * bursts of input. 114651078Speter * XXX flow control should be set in comparam(), not here. 114751078Speter */ 114851078Speter outb(com->esp_port + ESP_CMD1, ESP_SETMODE); 114951078Speter outb(com->esp_port + ESP_CMD2, ESP_MODE_RTS | ESP_MODE_FIFO); 115051078Speter 115151078Speter /* Set RTS/CTS flow control. */ 115251078Speter outb(com->esp_port + ESP_CMD1, ESP_SETFLOWTYPE); 115351078Speter outb(com->esp_port + ESP_CMD2, ESP_FLOW_RTS); 115451078Speter outb(com->esp_port + ESP_CMD2, ESP_FLOW_CTS); 115551078Speter 115651078Speter /* Set flow-control levels. */ 115751078Speter outb(com->esp_port + ESP_CMD1, ESP_SETRXFLOW); 115851078Speter outb(com->esp_port + ESP_CMD2, HIBYTE(768)); 115951078Speter outb(com->esp_port + ESP_CMD2, LOBYTE(768)); 116051078Speter outb(com->esp_port + ESP_CMD2, HIBYTE(512)); 116151078Speter outb(com->esp_port + ESP_CMD2, LOBYTE(512)); 116251078Speter } 116351078Speter#endif /* COM_ESP */ 116451078Speter outb(iobase + com_fifo, 0); 116551078Speterdetermined_type: ; 116651078Speter 116751078Speter#ifdef COM_MULTIPORT 116851078Speter if (COM_ISMULTIPORT(flags)) { 116953344Speter device_t masterdev; 117053344Speter 117151078Speter com->multiport = TRUE; 117251078Speter printf(" (multiport"); 117351078Speter if (unit == COM_MPMASTER(flags)) 117451078Speter printf(" master"); 117551078Speter printf(")"); 117653344Speter masterdev = devclass_get_device(sio_devclass, 117753344Speter COM_MPMASTER(flags)); 117857234Sbde com->no_irq = (masterdev == NULL || bus_get_resource(masterdev, 117957234Sbde SYS_RES_IRQ, 0, NULL, NULL) != 0); 118051078Speter } 118151078Speter#endif /* COM_MULTIPORT */ 118251078Speter if (unit == comconsole) 118351078Speter printf(", console"); 118453344Speter if (COM_IIR_TXRDYBUG(flags)) 118551078Speter printf(" with a bogus IIR_TXRDY register"); 118651078Speter printf("\n"); 118751078Speter 118851078Speter if (!sio_registered) { 118951078Speter register_swi(SWI_TTY, siopoll); 119051078Speter sio_registered = TRUE; 119151078Speter } 119251078Speter make_dev(&sio_cdevsw, unit, 119351078Speter UID_ROOT, GID_WHEEL, 0600, "ttyd%r", unit); 119451078Speter make_dev(&sio_cdevsw, unit | CONTROL_INIT_STATE, 119551078Speter UID_ROOT, GID_WHEEL, 0600, "ttyid%r", unit); 119651078Speter make_dev(&sio_cdevsw, unit | CONTROL_LOCK_STATE, 119751078Speter UID_ROOT, GID_WHEEL, 0600, "ttyld%r", unit); 119851078Speter make_dev(&sio_cdevsw, unit | CALLOUT_MASK, 119951078Speter UID_UUCP, GID_DIALER, 0660, "cuaa%r", unit); 120051078Speter make_dev(&sio_cdevsw, unit | CALLOUT_MASK | CONTROL_INIT_STATE, 120151078Speter UID_UUCP, GID_DIALER, 0660, "cuaia%r", unit); 120251078Speter make_dev(&sio_cdevsw, unit | CALLOUT_MASK | CONTROL_LOCK_STATE, 120351078Speter UID_UUCP, GID_DIALER, 0660, "cuala%r", unit); 120451078Speter com->flags = flags; 120551078Speter com->pps.ppscap = PPS_CAPTUREASSERT | PPS_CAPTURECLEAR; 120651078Speter pps_init(&com->pps); 120751078Speter 120851078Speter rid = 0; 120951078Speter com->irqres = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0ul, ~0ul, 1, 121053344Speter RF_ACTIVE); 121153344Speter if (com->irqres) { 121253344Speter ret = BUS_SETUP_INTR(device_get_parent(dev), dev, com->irqres, 121354194Speter INTR_TYPE_TTY | INTR_TYPE_FAST, 121454386Simp siointr, com, &com->cookie); 121554194Speter if (ret) { 121654194Speter ret = BUS_SETUP_INTR(device_get_parent(dev), dev, 121754194Speter com->irqres, INTR_TYPE_TTY, 121854386Simp siointr, com, &com->cookie); 121954194Speter if (ret == 0) 122054194Speter device_printf(dev, "unable to activate interrupt in fast mode - using normal mode"); 122154194Speter } 122253344Speter if (ret) 122353344Speter device_printf(dev, "could not activate interrupt\n"); 122453344Speter } 122551078Speter 122651078Speter return (0); 122751078Speter} 122851078Speter 122951078Speterstatic int 123051078Spetersioopen(dev, flag, mode, p) 123151078Speter dev_t dev; 123251078Speter int flag; 123351078Speter int mode; 123451078Speter struct proc *p; 123551078Speter{ 123651078Speter struct com_s *com; 123751078Speter int error; 123851078Speter Port_t iobase; 123951078Speter int mynor; 124051078Speter int s; 124151078Speter struct tty *tp; 124251078Speter int unit; 124351078Speter 124451078Speter mynor = minor(dev); 124551078Speter unit = MINOR_TO_UNIT(mynor); 124653344Speter com = com_addr(unit); 124753344Speter if (com == NULL) 124851078Speter return (ENXIO); 124951078Speter if (com->gone) 125051078Speter return (ENXIO); 125151078Speter if (mynor & CONTROL_MASK) 125251078Speter return (0); 125351078Speter tp = dev->si_tty = com->tp = ttymalloc(com->tp); 125451078Speter s = spltty(); 125551078Speter /* 125651078Speter * We jump to this label after all non-interrupted sleeps to pick 125751078Speter * up any changes of the device state. 125851078Speter */ 125951078Speteropen_top: 126051078Speter while (com->state & CS_DTR_OFF) { 126151078Speter error = tsleep(&com->dtr_wait, TTIPRI | PCATCH, "siodtr", 0); 126251078Speter if (com_addr(unit) == NULL) 126351078Speter return (ENXIO); 126451078Speter if (error != 0 || com->gone) 126551078Speter goto out; 126651078Speter } 126751078Speter if (tp->t_state & TS_ISOPEN) { 126851078Speter /* 126951078Speter * The device is open, so everything has been initialized. 127051078Speter * Handle conflicts. 127151078Speter */ 127251078Speter if (mynor & CALLOUT_MASK) { 127351078Speter if (!com->active_out) { 127451078Speter error = EBUSY; 127551078Speter goto out; 127651078Speter } 127751078Speter } else { 127851078Speter if (com->active_out) { 127951078Speter if (flag & O_NONBLOCK) { 128051078Speter error = EBUSY; 128151078Speter goto out; 128251078Speter } 128351078Speter error = tsleep(&com->active_out, 128451078Speter TTIPRI | PCATCH, "siobi", 0); 128551078Speter if (com_addr(unit) == NULL) 128651078Speter return (ENXIO); 128751078Speter if (error != 0 || com->gone) 128851078Speter goto out; 128951078Speter goto open_top; 129051078Speter } 129151078Speter } 129251078Speter if (tp->t_state & TS_XCLUDE && 129351078Speter suser(p)) { 129451078Speter error = EBUSY; 129551078Speter goto out; 129651078Speter } 129751078Speter } else { 129851078Speter /* 129951078Speter * The device isn't open, so there are no conflicts. 130051078Speter * Initialize it. Initialization is done twice in many 130151078Speter * cases: to preempt sleeping callin opens if we are 130251078Speter * callout, and to complete a callin open after DCD rises. 130351078Speter */ 130451078Speter tp->t_oproc = comstart; 130551078Speter tp->t_param = comparam; 130651654Sphk tp->t_stop = comstop; 130751078Speter tp->t_dev = dev; 130851078Speter tp->t_termios = mynor & CALLOUT_MASK 130951078Speter ? com->it_out : com->it_in; 131051078Speter (void)commctl(com, TIOCM_DTR | TIOCM_RTS, DMSET); 131151078Speter com->poll = com->no_irq; 131251078Speter com->poll_output = com->loses_outints; 131351078Speter ++com->wopeners; 131451078Speter error = comparam(tp, &tp->t_termios); 131551078Speter --com->wopeners; 131651078Speter if (error != 0) 131751078Speter goto out; 131851078Speter /* 131951078Speter * XXX we should goto open_top if comparam() slept. 132051078Speter */ 132151078Speter iobase = com->iobase; 132251078Speter if (com->hasfifo) { 132351078Speter /* 132451078Speter * (Re)enable and drain fifos. 132551078Speter * 132651078Speter * Certain SMC chips cause problems if the fifos 132751078Speter * are enabled while input is ready. Turn off the 132851078Speter * fifo if necessary to clear the input. We test 132951078Speter * the input ready bit after enabling the fifos 133051078Speter * since we've already enabled them in comparam() 133151078Speter * and to handle races between enabling and fresh 133251078Speter * input. 133351078Speter */ 133451078Speter while (TRUE) { 133551078Speter outb(iobase + com_fifo, 133651078Speter FIFO_RCV_RST | FIFO_XMT_RST 133751078Speter | com->fifo_image); 133851078Speter /* 133951078Speter * XXX the delays are for superstitious 134051078Speter * historical reasons. It must be less than 134151078Speter * the character time at the maximum 134251078Speter * supported speed (87 usec at 115200 bps 134351078Speter * 8N1). Otherwise we might loop endlessly 134451078Speter * if data is streaming in. We used to use 134551078Speter * delays of 100. That usually worked 134651078Speter * because DELAY(100) used to usually delay 134751078Speter * for about 85 usec instead of 100. 134851078Speter */ 134951078Speter DELAY(50); 135051078Speter if (!(inb(com->line_status_port) & LSR_RXRDY)) 135151078Speter break; 135251078Speter outb(iobase + com_fifo, 0); 135351078Speter DELAY(50); 135451078Speter (void) inb(com->data_port); 135551078Speter } 135651078Speter } 135751078Speter 135851078Speter disable_intr(); 135951078Speter (void) inb(com->line_status_port); 136051078Speter (void) inb(com->data_port); 136151078Speter com->prev_modem_status = com->last_modem_status 136251078Speter = inb(com->modem_status_port); 136351078Speter if (COM_IIR_TXRDYBUG(com->flags)) { 136451078Speter outb(com->intr_ctl_port, IER_ERXRDY | IER_ERLS 136551078Speter | IER_EMSC); 136651078Speter } else { 136751078Speter outb(com->intr_ctl_port, IER_ERXRDY | IER_ETXRDY 136851078Speter | IER_ERLS | IER_EMSC); 136951078Speter } 137051078Speter enable_intr(); 137151078Speter /* 137251078Speter * Handle initial DCD. Callout devices get a fake initial 137351078Speter * DCD (trapdoor DCD). If we are callout, then any sleeping 137451078Speter * callin opens get woken up and resume sleeping on "siobi" 137551078Speter * instead of "siodcd". 137651078Speter */ 137751078Speter /* 137851078Speter * XXX `mynor & CALLOUT_MASK' should be 137951078Speter * `tp->t_cflag & (SOFT_CARRIER | TRAPDOOR_CARRIER) where 138051078Speter * TRAPDOOR_CARRIER is the default initial state for callout 138151078Speter * devices and SOFT_CARRIER is like CLOCAL except it hides 138251078Speter * the true carrier. 138351078Speter */ 138451078Speter if (com->prev_modem_status & MSR_DCD || mynor & CALLOUT_MASK) 138551078Speter (*linesw[tp->t_line].l_modem)(tp, 1); 138651078Speter } 138751078Speter /* 138851078Speter * Wait for DCD if necessary. 138951078Speter */ 139051078Speter if (!(tp->t_state & TS_CARR_ON) && !(mynor & CALLOUT_MASK) 139151078Speter && !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) { 139251078Speter ++com->wopeners; 139351078Speter error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "siodcd", 0); 139451078Speter if (com_addr(unit) == NULL) 139551078Speter return (ENXIO); 139651078Speter --com->wopeners; 139751078Speter if (error != 0 || com->gone) 139851078Speter goto out; 139951078Speter goto open_top; 140051078Speter } 140151078Speter error = (*linesw[tp->t_line].l_open)(dev, tp); 140251078Speter disc_optim(tp, &tp->t_termios, com); 140351078Speter if (tp->t_state & TS_ISOPEN && mynor & CALLOUT_MASK) 140451078Speter com->active_out = TRUE; 140551078Speter siosettimeout(); 140651078Speterout: 140751078Speter splx(s); 140851078Speter if (!(tp->t_state & TS_ISOPEN) && com->wopeners == 0) 140951078Speter comhardclose(com); 141051078Speter return (error); 141151078Speter} 141251078Speter 141351078Speterstatic int 141451078Spetersioclose(dev, flag, mode, p) 141551078Speter dev_t dev; 141651078Speter int flag; 141751078Speter int mode; 141851078Speter struct proc *p; 141951078Speter{ 142051078Speter struct com_s *com; 142151078Speter int mynor; 142251078Speter int s; 142351078Speter struct tty *tp; 142451078Speter 142551078Speter mynor = minor(dev); 142651078Speter if (mynor & CONTROL_MASK) 142751078Speter return (0); 142851078Speter com = com_addr(MINOR_TO_UNIT(mynor)); 142957915Simp if (com == NULL) 143057915Simp return (ENODEV); 143151078Speter tp = com->tp; 143251078Speter s = spltty(); 143351078Speter (*linesw[tp->t_line].l_close)(tp, flag); 143451078Speter disc_optim(tp, &tp->t_termios, com); 143551654Sphk comstop(tp, FREAD | FWRITE); 143651078Speter comhardclose(com); 143751078Speter ttyclose(tp); 143851078Speter siosettimeout(); 143951078Speter splx(s); 144051078Speter if (com->gone) { 144151078Speter printf("sio%d: gone\n", com->unit); 144251078Speter s = spltty(); 144351078Speter if (com->ibuf != NULL) 144451078Speter free(com->ibuf, M_DEVBUF); 144551078Speter bzero(tp, sizeof *tp); 144651078Speter splx(s); 144751078Speter } 144851078Speter return (0); 144951078Speter} 145051078Speter 145151078Speterstatic void 145251078Spetercomhardclose(com) 145351078Speter struct com_s *com; 145451078Speter{ 145551078Speter Port_t iobase; 145651078Speter int s; 145751078Speter struct tty *tp; 145851078Speter int unit; 145951078Speter 146051078Speter unit = com->unit; 146151078Speter iobase = com->iobase; 146251078Speter s = spltty(); 146351078Speter com->poll = FALSE; 146451078Speter com->poll_output = FALSE; 146551078Speter com->do_timestamp = FALSE; 146651078Speter com->do_dcd_timestamp = FALSE; 146751078Speter com->pps.ppsparam.mode = 0; 146851078Speter outb(iobase + com_cfcr, com->cfcr_image &= ~CFCR_SBREAK); 146951078Speter { 147051078Speter outb(iobase + com_ier, 0); 147151078Speter tp = com->tp; 147251078Speter if (tp->t_cflag & HUPCL 147351078Speter /* 147451078Speter * XXX we will miss any carrier drop between here and the 147551078Speter * next open. Perhaps we should watch DCD even when the 147651078Speter * port is closed; it is not sufficient to check it at 147751078Speter * the next open because it might go up and down while 147851078Speter * we're not watching. 147951078Speter */ 148051078Speter || (!com->active_out 148151078Speter && !(com->prev_modem_status & MSR_DCD) 148251078Speter && !(com->it_in.c_cflag & CLOCAL)) 148351078Speter || !(tp->t_state & TS_ISOPEN)) { 148451078Speter (void)commctl(com, TIOCM_DTR, DMBIC); 148551078Speter if (com->dtr_wait != 0 && !(com->state & CS_DTR_OFF)) { 148651078Speter timeout(siodtrwakeup, com, com->dtr_wait); 148751078Speter com->state |= CS_DTR_OFF; 148851078Speter } 148951078Speter } 149051078Speter } 149151078Speter if (com->hasfifo) { 149251078Speter /* 149351078Speter * Disable fifos so that they are off after controlled 149451078Speter * reboots. Some BIOSes fail to detect 16550s when the 149551078Speter * fifos are enabled. 149651078Speter */ 149751078Speter outb(iobase + com_fifo, 0); 149851078Speter } 149951078Speter com->active_out = FALSE; 150051078Speter wakeup(&com->active_out); 150151078Speter wakeup(TSA_CARR_ON(tp)); /* restart any wopeners */ 150251078Speter splx(s); 150351078Speter} 150451078Speter 150551078Speterstatic int 150651078Spetersioread(dev, uio, flag) 150751078Speter dev_t dev; 150851078Speter struct uio *uio; 150951078Speter int flag; 151051078Speter{ 151151078Speter int mynor; 151251078Speter struct com_s *com; 151351078Speter 151451078Speter mynor = minor(dev); 151551078Speter if (mynor & CONTROL_MASK) 151651078Speter return (ENODEV); 151751078Speter com = com_addr(MINOR_TO_UNIT(mynor)); 151857915Simp if (com == NULL || com->gone) 151951078Speter return (ENODEV); 152051078Speter return ((*linesw[com->tp->t_line].l_read)(com->tp, uio, flag)); 152151078Speter} 152251078Speter 152351078Speterstatic int 152451078Spetersiowrite(dev, uio, flag) 152551078Speter dev_t dev; 152651078Speter struct uio *uio; 152751078Speter int flag; 152851078Speter{ 152951078Speter int mynor; 153051078Speter struct com_s *com; 153151078Speter int unit; 153251078Speter 153351078Speter mynor = minor(dev); 153451078Speter if (mynor & CONTROL_MASK) 153551078Speter return (ENODEV); 153651078Speter 153751078Speter unit = MINOR_TO_UNIT(mynor); 153851078Speter com = com_addr(unit); 153957915Simp if (com == NULL || com->gone) 154051078Speter return (ENODEV); 154151078Speter /* 154251078Speter * (XXX) We disallow virtual consoles if the physical console is 154351078Speter * a serial port. This is in case there is a display attached that 154451078Speter * is not the console. In that situation we don't need/want the X 154551078Speter * server taking over the console. 154651078Speter */ 154751078Speter if (constty != NULL && unit == comconsole) 154851078Speter constty = NULL; 154951078Speter return ((*linesw[com->tp->t_line].l_write)(com->tp, uio, flag)); 155051078Speter} 155151078Speter 155251078Speterstatic void 155351078Spetersiobusycheck(chan) 155451078Speter void *chan; 155551078Speter{ 155651078Speter struct com_s *com; 155751078Speter int s; 155851078Speter 155951078Speter com = (struct com_s *)chan; 156051078Speter 156151078Speter /* 156251078Speter * Clear TS_BUSY if low-level output is complete. 156351078Speter * spl locking is sufficient because siointr1() does not set CS_BUSY. 156451078Speter * If siointr1() clears CS_BUSY after we look at it, then we'll get 156551078Speter * called again. Reading the line status port outside of siointr1() 156651078Speter * is safe because CS_BUSY is clear so there are no output interrupts 156751078Speter * to lose. 156851078Speter */ 156951078Speter s = spltty(); 157051078Speter if (com->state & CS_BUSY) 157151078Speter com->extra_state &= ~CSE_BUSYCHECK; /* False alarm. */ 157251078Speter else if ((inb(com->line_status_port) & (LSR_TSRE | LSR_TXRDY)) 157351078Speter == (LSR_TSRE | LSR_TXRDY)) { 157451078Speter com->tp->t_state &= ~TS_BUSY; 157551078Speter ttwwakeup(com->tp); 157651078Speter com->extra_state &= ~CSE_BUSYCHECK; 157751078Speter } else 157851078Speter timeout(siobusycheck, com, hz / 100); 157951078Speter splx(s); 158051078Speter} 158151078Speter 158251078Speterstatic void 158351078Spetersiodtrwakeup(chan) 158451078Speter void *chan; 158551078Speter{ 158651078Speter struct com_s *com; 158751078Speter 158851078Speter com = (struct com_s *)chan; 158951078Speter com->state &= ~CS_DTR_OFF; 159051078Speter wakeup(&com->dtr_wait); 159151078Speter} 159251078Speter 159351078Speterstatic void 159451078Spetersioinput(com) 159551078Speter struct com_s *com; 159651078Speter{ 159751078Speter u_char *buf; 159851078Speter int incc; 159951078Speter u_char line_status; 160051078Speter int recv_data; 160151078Speter struct tty *tp; 160251078Speter 160351078Speter buf = com->ibuf; 160451078Speter tp = com->tp; 160551078Speter if (!(tp->t_state & TS_ISOPEN) || !(tp->t_cflag & CREAD)) { 160651078Speter com_events -= (com->iptr - com->ibuf); 160751078Speter com->iptr = com->ibuf; 160851078Speter return; 160951078Speter } 161051078Speter if (tp->t_state & TS_CAN_BYPASS_L_RINT) { 161151078Speter /* 161251078Speter * Avoid the grotesquely inefficient lineswitch routine 161351078Speter * (ttyinput) in "raw" mode. It usually takes about 450 161451078Speter * instructions (that's without canonical processing or echo!). 161551078Speter * slinput is reasonably fast (usually 40 instructions plus 161651078Speter * call overhead). 161751078Speter */ 161851078Speter do { 161951078Speter enable_intr(); 162051078Speter incc = com->iptr - buf; 162151078Speter if (tp->t_rawq.c_cc + incc > tp->t_ihiwat 162251078Speter && (com->state & CS_RTS_IFLOW 162351078Speter || tp->t_iflag & IXOFF) 162451078Speter && !(tp->t_state & TS_TBLOCK)) 162551078Speter ttyblock(tp); 162651078Speter com->delta_error_counts[CE_TTY_BUF_OVERFLOW] 162751078Speter += b_to_q((char *)buf, incc, &tp->t_rawq); 162851078Speter buf += incc; 162951078Speter tk_nin += incc; 163051078Speter tk_rawcc += incc; 163151078Speter tp->t_rawcc += incc; 163251078Speter ttwakeup(tp); 163351078Speter if (tp->t_state & TS_TTSTOP 163451078Speter && (tp->t_iflag & IXANY 163551078Speter || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { 163651078Speter tp->t_state &= ~TS_TTSTOP; 163751078Speter tp->t_lflag &= ~FLUSHO; 163851078Speter comstart(tp); 163951078Speter } 164051078Speter disable_intr(); 164151078Speter } while (buf < com->iptr); 164251078Speter } else { 164351078Speter do { 164451078Speter enable_intr(); 164551078Speter line_status = buf[com->ierroff]; 164651078Speter recv_data = *buf++; 164751078Speter if (line_status 164851078Speter & (LSR_BI | LSR_FE | LSR_OE | LSR_PE)) { 164951078Speter if (line_status & LSR_BI) 165051078Speter recv_data |= TTY_BI; 165151078Speter if (line_status & LSR_FE) 165251078Speter recv_data |= TTY_FE; 165351078Speter if (line_status & LSR_OE) 165451078Speter recv_data |= TTY_OE; 165551078Speter if (line_status & LSR_PE) 165651078Speter recv_data |= TTY_PE; 165751078Speter } 165851078Speter (*linesw[tp->t_line].l_rint)(recv_data, tp); 165951078Speter disable_intr(); 166051078Speter } while (buf < com->iptr); 166151078Speter } 166251078Speter com_events -= (com->iptr - com->ibuf); 166351078Speter com->iptr = com->ibuf; 166451078Speter 166551078Speter /* 166651078Speter * There is now room for another low-level buffer full of input, 166751078Speter * so enable RTS if it is now disabled and there is room in the 166851078Speter * high-level buffer. 166951078Speter */ 167051078Speter if ((com->state & CS_RTS_IFLOW) && !(com->mcr_image & MCR_RTS) && 167151078Speter !(tp->t_state & TS_TBLOCK)) 167251078Speter outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); 167351078Speter} 167451078Speter 167551078Spetervoid 167651078Spetersiointr(arg) 167751078Speter void *arg; 167851078Speter{ 167951078Speter#ifndef COM_MULTIPORT 168051078Speter COM_LOCK(); 168151078Speter siointr1((struct com_s *) arg); 168251078Speter COM_UNLOCK(); 168351078Speter#else /* COM_MULTIPORT */ 168451078Speter bool_t possibly_more_intrs; 168551078Speter int unit; 168651078Speter struct com_s *com; 168751078Speter 168851078Speter /* 168951078Speter * Loop until there is no activity on any port. This is necessary 169051078Speter * to get an interrupt edge more than to avoid another interrupt. 169151078Speter * If the IRQ signal is just an OR of the IRQ signals from several 169251078Speter * devices, then the edge from one may be lost because another is 169351078Speter * on. 169451078Speter */ 169551078Speter COM_LOCK(); 169651078Speter do { 169751078Speter possibly_more_intrs = FALSE; 169853344Speter for (unit = 0; unit < sio_numunits; ++unit) { 169951078Speter com = com_addr(unit); 170051078Speter /* 170151078Speter * XXX COM_LOCK(); 170251078Speter * would it work here, or be counter-productive? 170351078Speter */ 170451078Speter if (com != NULL 170551078Speter && !com->gone 170651078Speter && (inb(com->int_id_port) & IIR_IMASK) 170751078Speter != IIR_NOPEND) { 170851078Speter siointr1(com); 170951078Speter possibly_more_intrs = TRUE; 171051078Speter } 171151078Speter /* XXX COM_UNLOCK(); */ 171251078Speter } 171351078Speter } while (possibly_more_intrs); 171451078Speter COM_UNLOCK(); 171551078Speter#endif /* COM_MULTIPORT */ 171651078Speter} 171751078Speter 171851078Speterstatic void 171951078Spetersiointr1(com) 172051078Speter struct com_s *com; 172151078Speter{ 172251078Speter u_char line_status; 172351078Speter u_char modem_status; 172451078Speter u_char *ioptr; 172551078Speter u_char recv_data; 172651078Speter u_char int_ctl; 172751078Speter u_char int_ctl_new; 172851078Speter struct timecounter *tc; 172951078Speter u_int count; 173051078Speter 173151078Speter int_ctl = inb(com->intr_ctl_port); 173251078Speter int_ctl_new = int_ctl; 173351078Speter 173451078Speter while (!com->gone) { 173551078Speter if (com->pps.ppsparam.mode & PPS_CAPTUREBOTH) { 173651078Speter modem_status = inb(com->modem_status_port); 173751078Speter if ((modem_status ^ com->last_modem_status) & MSR_DCD) { 173851078Speter tc = timecounter; 173951078Speter count = tc->tc_get_timecount(tc); 174051078Speter pps_event(&com->pps, tc, count, 174151078Speter (modem_status & MSR_DCD) ? 174251078Speter PPS_CAPTUREASSERT : PPS_CAPTURECLEAR); 174351078Speter } 174451078Speter } 174551078Speter line_status = inb(com->line_status_port); 174651078Speter 174751078Speter /* input event? (check first to help avoid overruns) */ 174851078Speter while (line_status & LSR_RCV_MASK) { 174951078Speter /* break/unnattached error bits or real input? */ 175051078Speter if (!(line_status & LSR_RXRDY)) 175151078Speter recv_data = 0; 175251078Speter else 175351078Speter recv_data = inb(com->data_port); 175451078Speter if (line_status & (LSR_BI | LSR_FE | LSR_PE)) { 175551078Speter /* 175651078Speter * Don't store BI if IGNBRK or FE/PE if IGNPAR. 175751078Speter * Otherwise, push the work to a higher level 175851078Speter * (to handle PARMRK) if we're bypassing. 175951078Speter * Otherwise, convert BI/FE and PE+INPCK to 0. 176051078Speter * 176151078Speter * This makes bypassing work right in the 176251078Speter * usual "raw" case (IGNBRK set, and IGNPAR 176351078Speter * and INPCK clear). 176451078Speter * 176551078Speter * Note: BI together with FE/PE means just BI. 176651078Speter */ 176751078Speter if (line_status & LSR_BI) { 176851078Speter#if defined(DDB) && defined(BREAK_TO_DEBUGGER) 176951078Speter if (com->unit == comconsole) { 177051078Speter breakpoint(); 177151078Speter goto cont; 177251078Speter } 177351078Speter#endif 177451078Speter if (com->tp == NULL 177551078Speter || com->tp->t_iflag & IGNBRK) 177651078Speter goto cont; 177751078Speter } else { 177851078Speter if (com->tp == NULL 177951078Speter || com->tp->t_iflag & IGNPAR) 178051078Speter goto cont; 178151078Speter } 178251078Speter if (com->tp->t_state & TS_CAN_BYPASS_L_RINT 178351078Speter && (line_status & (LSR_BI | LSR_FE) 178451078Speter || com->tp->t_iflag & INPCK)) 178551078Speter recv_data = 0; 178651078Speter } 178751078Speter ++com->bytes_in; 178851078Speter if (com->hotchar != 0 && recv_data == com->hotchar) 178951078Speter setsofttty(); 179051078Speter ioptr = com->iptr; 179151078Speter if (ioptr >= com->ibufend) 179251078Speter CE_RECORD(com, CE_INTERRUPT_BUF_OVERFLOW); 179351078Speter else { 179451078Speter if (com->do_timestamp) 179551078Speter microtime(&com->timestamp); 179651078Speter ++com_events; 179751078Speter schedsofttty(); 179851078Speter#if 0 /* for testing input latency vs efficiency */ 179951078Speterif (com->iptr - com->ibuf == 8) 180051078Speter setsofttty(); 180151078Speter#endif 180251078Speter ioptr[0] = recv_data; 180351078Speter ioptr[com->ierroff] = line_status; 180451078Speter com->iptr = ++ioptr; 180551078Speter if (ioptr == com->ihighwater 180651078Speter && com->state & CS_RTS_IFLOW) 180751078Speter outb(com->modem_ctl_port, 180851078Speter com->mcr_image &= ~MCR_RTS); 180951078Speter if (line_status & LSR_OE) 181051078Speter CE_RECORD(com, CE_OVERRUN); 181151078Speter } 181251078Spetercont: 181351078Speter /* 181451078Speter * "& 0x7F" is to avoid the gcc-1.40 generating a slow 181551078Speter * jump from the top of the loop to here 181651078Speter */ 181751078Speter line_status = inb(com->line_status_port) & 0x7F; 181851078Speter } 181951078Speter 182051078Speter /* modem status change? (always check before doing output) */ 182151078Speter modem_status = inb(com->modem_status_port); 182251078Speter if (modem_status != com->last_modem_status) { 182351078Speter if (com->do_dcd_timestamp 182451078Speter && !(com->last_modem_status & MSR_DCD) 182551078Speter && modem_status & MSR_DCD) 182651078Speter microtime(&com->dcd_timestamp); 182751078Speter 182851078Speter /* 182951078Speter * Schedule high level to handle DCD changes. Note 183051078Speter * that we don't use the delta bits anywhere. Some 183151078Speter * UARTs mess them up, and it's easy to remember the 183251078Speter * previous bits and calculate the delta. 183351078Speter */ 183451078Speter com->last_modem_status = modem_status; 183551078Speter if (!(com->state & CS_CHECKMSR)) { 183651078Speter com_events += LOTS_OF_EVENTS; 183751078Speter com->state |= CS_CHECKMSR; 183851078Speter setsofttty(); 183951078Speter } 184051078Speter 184151078Speter /* handle CTS change immediately for crisp flow ctl */ 184251078Speter if (com->state & CS_CTS_OFLOW) { 184351078Speter if (modem_status & MSR_CTS) 184451078Speter com->state |= CS_ODEVREADY; 184551078Speter else 184651078Speter com->state &= ~CS_ODEVREADY; 184751078Speter } 184851078Speter } 184951078Speter 185051078Speter /* output queued and everything ready? */ 185151078Speter if (line_status & LSR_TXRDY 185251078Speter && com->state >= (CS_BUSY | CS_TTGO | CS_ODEVREADY)) { 185351078Speter ioptr = com->obufq.l_head; 185451078Speter if (com->tx_fifo_size > 1) { 185551078Speter u_int ocount; 185651078Speter 185751078Speter ocount = com->obufq.l_tail - ioptr; 185851078Speter if (ocount > com->tx_fifo_size) 185951078Speter ocount = com->tx_fifo_size; 186051078Speter com->bytes_out += ocount; 186151078Speter do 186251078Speter outb(com->data_port, *ioptr++); 186351078Speter while (--ocount != 0); 186451078Speter } else { 186551078Speter outb(com->data_port, *ioptr++); 186651078Speter ++com->bytes_out; 186751078Speter } 186851078Speter com->obufq.l_head = ioptr; 186951078Speter if (COM_IIR_TXRDYBUG(com->flags)) { 187051078Speter int_ctl_new = int_ctl | IER_ETXRDY; 187151078Speter } 187251078Speter if (ioptr >= com->obufq.l_tail) { 187351078Speter struct lbq *qp; 187451078Speter 187551078Speter qp = com->obufq.l_next; 187651078Speter qp->l_queued = FALSE; 187751078Speter qp = qp->l_next; 187851078Speter if (qp != NULL) { 187951078Speter com->obufq.l_head = qp->l_head; 188051078Speter com->obufq.l_tail = qp->l_tail; 188151078Speter com->obufq.l_next = qp; 188251078Speter } else { 188351078Speter /* output just completed */ 188453344Speter if (COM_IIR_TXRDYBUG(com->flags)) { 188551078Speter int_ctl_new = int_ctl & ~IER_ETXRDY; 188651078Speter } 188751078Speter com->state &= ~CS_BUSY; 188851078Speter } 188951078Speter if (!(com->state & CS_ODONE)) { 189051078Speter com_events += LOTS_OF_EVENTS; 189151078Speter com->state |= CS_ODONE; 189251078Speter setsofttty(); /* handle at high level ASAP */ 189351078Speter } 189451078Speter } 189553344Speter if (COM_IIR_TXRDYBUG(com->flags) && (int_ctl != int_ctl_new)) { 189651078Speter outb(com->intr_ctl_port, int_ctl_new); 189751078Speter } 189851078Speter } 189951078Speter 190051078Speter /* finished? */ 190151078Speter#ifndef COM_MULTIPORT 190251078Speter if ((inb(com->int_id_port) & IIR_IMASK) == IIR_NOPEND) 190351078Speter#endif /* COM_MULTIPORT */ 190451078Speter return; 190551078Speter } 190651078Speter} 190751078Speter 190851078Speterstatic int 190951078Spetersioioctl(dev, cmd, data, flag, p) 191051078Speter dev_t dev; 191151078Speter u_long cmd; 191251078Speter caddr_t data; 191351078Speter int flag; 191451078Speter struct proc *p; 191551078Speter{ 191651078Speter struct com_s *com; 191751078Speter int error; 191851078Speter Port_t iobase; 191951078Speter int mynor; 192051078Speter int s; 192151078Speter struct tty *tp; 192251078Speter#if defined(COMPAT_43) || defined(COMPAT_SUNOS) 192351078Speter u_long oldcmd; 192451078Speter struct termios term; 192551078Speter#endif 192651078Speter 192751078Speter mynor = minor(dev); 192851078Speter com = com_addr(MINOR_TO_UNIT(mynor)); 192957915Simp if (com == NULL || com->gone) 193051078Speter return (ENODEV); 193151078Speter iobase = com->iobase; 193251078Speter if (mynor & CONTROL_MASK) { 193351078Speter struct termios *ct; 193451078Speter 193551078Speter switch (mynor & CONTROL_MASK) { 193651078Speter case CONTROL_INIT_STATE: 193751078Speter ct = mynor & CALLOUT_MASK ? &com->it_out : &com->it_in; 193851078Speter break; 193951078Speter case CONTROL_LOCK_STATE: 194051078Speter ct = mynor & CALLOUT_MASK ? &com->lt_out : &com->lt_in; 194151078Speter break; 194251078Speter default: 194351078Speter return (ENODEV); /* /dev/nodev */ 194451078Speter } 194551078Speter switch (cmd) { 194651078Speter case TIOCSETA: 194751078Speter error = suser(p); 194851078Speter if (error != 0) 194951078Speter return (error); 195051078Speter *ct = *(struct termios *)data; 195151078Speter return (0); 195251078Speter case TIOCGETA: 195351078Speter *(struct termios *)data = *ct; 195451078Speter return (0); 195551078Speter case TIOCGETD: 195651078Speter *(int *)data = TTYDISC; 195751078Speter return (0); 195851078Speter case TIOCGWINSZ: 195951078Speter bzero(data, sizeof(struct winsize)); 196051078Speter return (0); 196151078Speter default: 196251078Speter return (ENOTTY); 196351078Speter } 196451078Speter } 196551078Speter tp = com->tp; 196651078Speter#if defined(COMPAT_43) || defined(COMPAT_SUNOS) 196751078Speter term = tp->t_termios; 196851078Speter oldcmd = cmd; 196951078Speter error = ttsetcompat(tp, &cmd, data, &term); 197051078Speter if (error != 0) 197151078Speter return (error); 197251078Speter if (cmd != oldcmd) 197351078Speter data = (caddr_t)&term; 197451078Speter#endif 197551078Speter if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { 197651078Speter int cc; 197751078Speter struct termios *dt = (struct termios *)data; 197851078Speter struct termios *lt = mynor & CALLOUT_MASK 197951078Speter ? &com->lt_out : &com->lt_in; 198051078Speter 198151078Speter dt->c_iflag = (tp->t_iflag & lt->c_iflag) 198251078Speter | (dt->c_iflag & ~lt->c_iflag); 198351078Speter dt->c_oflag = (tp->t_oflag & lt->c_oflag) 198451078Speter | (dt->c_oflag & ~lt->c_oflag); 198551078Speter dt->c_cflag = (tp->t_cflag & lt->c_cflag) 198651078Speter | (dt->c_cflag & ~lt->c_cflag); 198751078Speter dt->c_lflag = (tp->t_lflag & lt->c_lflag) 198851078Speter | (dt->c_lflag & ~lt->c_lflag); 198951078Speter for (cc = 0; cc < NCCS; ++cc) 199051078Speter if (lt->c_cc[cc] != 0) 199151078Speter dt->c_cc[cc] = tp->t_cc[cc]; 199251078Speter if (lt->c_ispeed != 0) 199351078Speter dt->c_ispeed = tp->t_ispeed; 199451078Speter if (lt->c_ospeed != 0) 199551078Speter dt->c_ospeed = tp->t_ospeed; 199651078Speter } 199751078Speter error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); 199851078Speter if (error != ENOIOCTL) 199951078Speter return (error); 200051078Speter s = spltty(); 200151078Speter error = ttioctl(tp, cmd, data, flag); 200251078Speter disc_optim(tp, &tp->t_termios, com); 200351078Speter if (error != ENOIOCTL) { 200451078Speter splx(s); 200551078Speter return (error); 200651078Speter } 200751078Speter switch (cmd) { 200851078Speter case TIOCSBRK: 200951078Speter outb(iobase + com_cfcr, com->cfcr_image |= CFCR_SBREAK); 201051078Speter break; 201151078Speter case TIOCCBRK: 201251078Speter outb(iobase + com_cfcr, com->cfcr_image &= ~CFCR_SBREAK); 201351078Speter break; 201451078Speter case TIOCSDTR: 201551078Speter (void)commctl(com, TIOCM_DTR, DMBIS); 201651078Speter break; 201751078Speter case TIOCCDTR: 201851078Speter (void)commctl(com, TIOCM_DTR, DMBIC); 201951078Speter break; 202051078Speter /* 202151078Speter * XXX should disallow changing MCR_RTS if CS_RTS_IFLOW is set. The 202251078Speter * changes get undone on the next call to comparam(). 202351078Speter */ 202451078Speter case TIOCMSET: 202551078Speter (void)commctl(com, *(int *)data, DMSET); 202651078Speter break; 202751078Speter case TIOCMBIS: 202851078Speter (void)commctl(com, *(int *)data, DMBIS); 202951078Speter break; 203051078Speter case TIOCMBIC: 203151078Speter (void)commctl(com, *(int *)data, DMBIC); 203251078Speter break; 203351078Speter case TIOCMGET: 203451078Speter *(int *)data = commctl(com, 0, DMGET); 203551078Speter break; 203651078Speter case TIOCMSDTRWAIT: 203751078Speter /* must be root since the wait applies to following logins */ 203851078Speter error = suser(p); 203951078Speter if (error != 0) { 204051078Speter splx(s); 204151078Speter return (error); 204251078Speter } 204351078Speter com->dtr_wait = *(int *)data * hz / 100; 204451078Speter break; 204551078Speter case TIOCMGDTRWAIT: 204651078Speter *(int *)data = com->dtr_wait * 100 / hz; 204751078Speter break; 204851078Speter case TIOCTIMESTAMP: 204951078Speter com->do_timestamp = TRUE; 205051078Speter *(struct timeval *)data = com->timestamp; 205151078Speter break; 205251078Speter case TIOCDCDTIMESTAMP: 205351078Speter com->do_dcd_timestamp = TRUE; 205451078Speter *(struct timeval *)data = com->dcd_timestamp; 205551078Speter break; 205651078Speter default: 205751078Speter splx(s); 205851078Speter error = pps_ioctl(cmd, data, &com->pps); 205951078Speter if (error == ENODEV) 206051078Speter error = ENOTTY; 206151078Speter return (error); 206251078Speter } 206351078Speter splx(s); 206451078Speter return (0); 206551078Speter} 206651078Speter 206751078Speterstatic void 206851078Spetersiopoll() 206951078Speter{ 207051078Speter int unit; 207151078Speter 207251078Speter if (com_events == 0) 207351078Speter return; 207451078Speterrepeat: 207553344Speter for (unit = 0; unit < sio_numunits; ++unit) { 207651078Speter struct com_s *com; 207751078Speter int incc; 207851078Speter struct tty *tp; 207951078Speter 208051078Speter com = com_addr(unit); 208151078Speter if (com == NULL) 208251078Speter continue; 208351078Speter tp = com->tp; 208451078Speter if (tp == NULL || com->gone) { 208551078Speter /* 208651078Speter * Discard any events related to never-opened or 208751078Speter * going-away devices. 208851078Speter */ 208951078Speter disable_intr(); 209051078Speter incc = com->iptr - com->ibuf; 209151078Speter com->iptr = com->ibuf; 209251078Speter if (com->state & CS_CHECKMSR) { 209351078Speter incc += LOTS_OF_EVENTS; 209451078Speter com->state &= ~CS_CHECKMSR; 209551078Speter } 209651078Speter com_events -= incc; 209751078Speter enable_intr(); 209851078Speter continue; 209951078Speter } 210051078Speter if (com->iptr != com->ibuf) { 210151078Speter disable_intr(); 210251078Speter sioinput(com); 210351078Speter enable_intr(); 210451078Speter } 210551078Speter if (com->state & CS_CHECKMSR) { 210651078Speter u_char delta_modem_status; 210751078Speter 210851078Speter disable_intr(); 210951078Speter delta_modem_status = com->last_modem_status 211051078Speter ^ com->prev_modem_status; 211151078Speter com->prev_modem_status = com->last_modem_status; 211251078Speter com_events -= LOTS_OF_EVENTS; 211351078Speter com->state &= ~CS_CHECKMSR; 211451078Speter enable_intr(); 211551078Speter if (delta_modem_status & MSR_DCD) 211651078Speter (*linesw[tp->t_line].l_modem) 211751078Speter (tp, com->prev_modem_status & MSR_DCD); 211851078Speter } 211951078Speter if (com->state & CS_ODONE) { 212051078Speter disable_intr(); 212151078Speter com_events -= LOTS_OF_EVENTS; 212251078Speter com->state &= ~CS_ODONE; 212351078Speter enable_intr(); 212451078Speter if (!(com->state & CS_BUSY) 212551078Speter && !(com->extra_state & CSE_BUSYCHECK)) { 212651078Speter timeout(siobusycheck, com, hz / 100); 212751078Speter com->extra_state |= CSE_BUSYCHECK; 212851078Speter } 212951078Speter (*linesw[tp->t_line].l_start)(tp); 213051078Speter } 213151078Speter if (com_events == 0) 213251078Speter break; 213351078Speter } 213451078Speter if (com_events >= LOTS_OF_EVENTS) 213551078Speter goto repeat; 213651078Speter} 213751078Speter 213851078Speterstatic int 213951078Spetercomparam(tp, t) 214051078Speter struct tty *tp; 214151078Speter struct termios *t; 214251078Speter{ 214351078Speter u_int cfcr; 214451078Speter int cflag; 214551078Speter struct com_s *com; 214651078Speter int divisor; 214751078Speter u_char dlbh; 214851078Speter u_char dlbl; 214951078Speter Port_t iobase; 215051078Speter int s; 215151078Speter int unit; 215251078Speter 215351078Speter /* do historical conversions */ 215451078Speter if (t->c_ispeed == 0) 215551078Speter t->c_ispeed = t->c_ospeed; 215651078Speter 215751078Speter /* check requested parameters */ 215851078Speter divisor = ttspeedtab(t->c_ospeed, comspeedtab); 215951078Speter if (divisor < 0 || (divisor > 0 && t->c_ispeed != t->c_ospeed)) 216051078Speter return (EINVAL); 216151078Speter 216251078Speter /* parameters are OK, convert them to the com struct and the device */ 216351078Speter unit = DEV_TO_UNIT(tp->t_dev); 216451078Speter com = com_addr(unit); 216557915Simp if (com == NULL) 216657915Simp return (ENODEV); 216751078Speter iobase = com->iobase; 216851078Speter s = spltty(); 216951078Speter if (divisor == 0) 217051078Speter (void)commctl(com, TIOCM_DTR, DMBIC); /* hang up line */ 217151078Speter else 217251078Speter (void)commctl(com, TIOCM_DTR, DMBIS); 217351078Speter cflag = t->c_cflag; 217451078Speter switch (cflag & CSIZE) { 217551078Speter case CS5: 217651078Speter cfcr = CFCR_5BITS; 217751078Speter break; 217851078Speter case CS6: 217951078Speter cfcr = CFCR_6BITS; 218051078Speter break; 218151078Speter case CS7: 218251078Speter cfcr = CFCR_7BITS; 218351078Speter break; 218451078Speter default: 218551078Speter cfcr = CFCR_8BITS; 218651078Speter break; 218751078Speter } 218851078Speter if (cflag & PARENB) { 218951078Speter cfcr |= CFCR_PENAB; 219051078Speter if (!(cflag & PARODD)) 219151078Speter cfcr |= CFCR_PEVEN; 219251078Speter } 219351078Speter if (cflag & CSTOPB) 219451078Speter cfcr |= CFCR_STOPB; 219551078Speter 219651078Speter if (com->hasfifo && divisor != 0) { 219751078Speter /* 219851078Speter * Use a fifo trigger level low enough so that the input 219951078Speter * latency from the fifo is less than about 16 msec and 220051078Speter * the total latency is less than about 30 msec. These 220151078Speter * latencies are reasonable for humans. Serial comms 220251078Speter * protocols shouldn't expect anything better since modem 220351078Speter * latencies are larger. 220451078Speter */ 220551078Speter com->fifo_image = t->c_ospeed <= 4800 220651078Speter ? FIFO_ENABLE : FIFO_ENABLE | FIFO_RX_HIGH; 220751078Speter#ifdef COM_ESP 220851078Speter /* 220951078Speter * The Hayes ESP card needs the fifo DMA mode bit set 221051078Speter * in compatibility mode. If not, it will interrupt 221151078Speter * for each character received. 221251078Speter */ 221351078Speter if (com->esp) 221451078Speter com->fifo_image |= FIFO_DMA_MODE; 221551078Speter#endif 221651078Speter outb(iobase + com_fifo, com->fifo_image); 221751078Speter } 221851078Speter 221951078Speter /* 222051078Speter * This returns with interrupts disabled so that we can complete 222151078Speter * the speed change atomically. Keeping interrupts disabled is 222251078Speter * especially important while com_data is hidden. 222351078Speter */ 222451078Speter (void) siosetwater(com, t->c_ispeed); 222551078Speter 222651078Speter if (divisor != 0) { 222751078Speter outb(iobase + com_cfcr, cfcr | CFCR_DLAB); 222851078Speter /* 222951078Speter * Only set the divisor registers if they would change, 223051078Speter * since on some 16550 incompatibles (UMC8669F), setting 223151078Speter * them while input is arriving them loses sync until 223251078Speter * data stops arriving. 223351078Speter */ 223451078Speter dlbl = divisor & 0xFF; 223551078Speter if (inb(iobase + com_dlbl) != dlbl) 223651078Speter outb(iobase + com_dlbl, dlbl); 223751078Speter dlbh = (u_int) divisor >> 8; 223851078Speter if (inb(iobase + com_dlbh) != dlbh) 223951078Speter outb(iobase + com_dlbh, dlbh); 224051078Speter } 224151078Speter 224251078Speter 224351078Speter outb(iobase + com_cfcr, com->cfcr_image = cfcr); 224451078Speter 224551078Speter if (!(tp->t_state & TS_TTSTOP)) 224651078Speter com->state |= CS_TTGO; 224751078Speter 224851078Speter if (cflag & CRTS_IFLOW) { 224951078Speter if (com->st16650a) { 225051078Speter outb(iobase + com_cfcr, 0xbf); 225151078Speter outb(iobase + com_fifo, inb(iobase + com_fifo) | 0x40); 225251078Speter } 225351078Speter com->state |= CS_RTS_IFLOW; 225451078Speter /* 225551078Speter * If CS_RTS_IFLOW just changed from off to on, the change 225651078Speter * needs to be propagated to MCR_RTS. This isn't urgent, 225751078Speter * so do it later by calling comstart() instead of repeating 225851078Speter * a lot of code from comstart() here. 225951078Speter */ 226051078Speter } else if (com->state & CS_RTS_IFLOW) { 226151078Speter com->state &= ~CS_RTS_IFLOW; 226251078Speter /* 226351078Speter * CS_RTS_IFLOW just changed from on to off. Force MCR_RTS 226451078Speter * on here, since comstart() won't do it later. 226551078Speter */ 226651078Speter outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); 226751078Speter if (com->st16650a) { 226851078Speter outb(iobase + com_cfcr, 0xbf); 226951078Speter outb(iobase + com_fifo, inb(iobase + com_fifo) & ~0x40); 227051078Speter } 227151078Speter } 227251078Speter 227351078Speter 227451078Speter /* 227551078Speter * Set up state to handle output flow control. 227651078Speter * XXX - worth handling MDMBUF (DCD) flow control at the lowest level? 227751078Speter * Now has 10+ msec latency, while CTS flow has 50- usec latency. 227851078Speter */ 227951078Speter com->state |= CS_ODEVREADY; 228051078Speter com->state &= ~CS_CTS_OFLOW; 228151078Speter if (cflag & CCTS_OFLOW) { 228251078Speter com->state |= CS_CTS_OFLOW; 228351078Speter if (!(com->last_modem_status & MSR_CTS)) 228451078Speter com->state &= ~CS_ODEVREADY; 228551078Speter if (com->st16650a) { 228651078Speter outb(iobase + com_cfcr, 0xbf); 228751078Speter outb(iobase + com_fifo, inb(iobase + com_fifo) | 0x80); 228851078Speter } 228951078Speter } else { 229051078Speter if (com->st16650a) { 229151078Speter outb(iobase + com_cfcr, 0xbf); 229251078Speter outb(iobase + com_fifo, inb(iobase + com_fifo) & ~0x80); 229351078Speter } 229451078Speter } 229551078Speter 229651078Speter 229751078Speter outb(iobase + com_cfcr, com->cfcr_image); 229851078Speter 229951078Speter 230051078Speter /* XXX shouldn't call functions while intrs are disabled. */ 230151078Speter disc_optim(tp, t, com); 230251078Speter /* 230351078Speter * Recover from fiddling with CS_TTGO. We used to call siointr1() 230451078Speter * unconditionally, but that defeated the careful discarding of 230551078Speter * stale input in sioopen(). 230651078Speter */ 230751078Speter if (com->state >= (CS_BUSY | CS_TTGO)) 230851078Speter siointr1(com); 230951078Speter 231051078Speter enable_intr(); 231151078Speter splx(s); 231251078Speter comstart(tp); 231351078Speter if (com->ibufold != NULL) { 231451078Speter free(com->ibufold, M_DEVBUF); 231551078Speter com->ibufold = NULL; 231651078Speter } 231751078Speter return (0); 231851078Speter} 231951078Speter 232051078Speterstatic int 232151078Spetersiosetwater(com, speed) 232251078Speter struct com_s *com; 232351078Speter speed_t speed; 232451078Speter{ 232551078Speter int cp4ticks; 232651078Speter u_char *ibuf; 232751078Speter int ibufsize; 232851078Speter struct tty *tp; 232951078Speter 233051078Speter /* 233151078Speter * Make the buffer size large enough to handle a softtty interrupt 233251078Speter * latency of about 2 ticks without loss of throughput or data 233351078Speter * (about 3 ticks if input flow control is not used or not honoured, 233451078Speter * but a bit less for CS5-CS7 modes). 233551078Speter */ 233651078Speter cp4ticks = speed / 10 / hz * 4; 233751078Speter for (ibufsize = 128; ibufsize < cp4ticks;) 233851078Speter ibufsize <<= 1; 233951078Speter if (ibufsize == com->ibufsize) { 234051078Speter disable_intr(); 234151078Speter return (0); 234251078Speter } 234351078Speter 234451078Speter /* 234551078Speter * Allocate input buffer. The extra factor of 2 in the size is 234651078Speter * to allow for an error byte for each input byte. 234751078Speter */ 234851078Speter ibuf = malloc(2 * ibufsize, M_DEVBUF, M_NOWAIT); 234951078Speter if (ibuf == NULL) { 235051078Speter disable_intr(); 235151078Speter return (ENOMEM); 235251078Speter } 235351078Speter 235451078Speter /* Initialize non-critical variables. */ 235551078Speter com->ibufold = com->ibuf; 235651078Speter com->ibufsize = ibufsize; 235751078Speter tp = com->tp; 235851078Speter if (tp != NULL) { 235951078Speter tp->t_ififosize = 2 * ibufsize; 236051078Speter tp->t_ispeedwat = (speed_t)-1; 236151078Speter tp->t_ospeedwat = (speed_t)-1; 236251078Speter } 236351078Speter 236451078Speter /* 236551078Speter * Read current input buffer, if any. Continue with interrupts 236651078Speter * disabled. 236751078Speter */ 236851078Speter disable_intr(); 236951078Speter if (com->iptr != com->ibuf) 237051078Speter sioinput(com); 237151078Speter 237251078Speter /*- 237351078Speter * Initialize critical variables, including input buffer watermarks. 237451078Speter * The external device is asked to stop sending when the buffer 237551078Speter * exactly reaches high water, or when the high level requests it. 237651078Speter * The high level is notified immediately (rather than at a later 237751078Speter * clock tick) when this watermark is reached. 237851078Speter * The buffer size is chosen so the watermark should almost never 237951078Speter * be reached. 238051078Speter * The low watermark is invisibly 0 since the buffer is always 238151078Speter * emptied all at once. 238251078Speter */ 238351078Speter com->iptr = com->ibuf = ibuf; 238451078Speter com->ibufend = ibuf + ibufsize; 238551078Speter com->ierroff = ibufsize; 238651078Speter com->ihighwater = ibuf + 3 * ibufsize / 4; 238751078Speter return (0); 238851078Speter} 238951078Speter 239051078Speterstatic void 239151078Spetercomstart(tp) 239251078Speter struct tty *tp; 239351078Speter{ 239451078Speter struct com_s *com; 239551078Speter int s; 239651078Speter int unit; 239751078Speter 239851078Speter unit = DEV_TO_UNIT(tp->t_dev); 239951078Speter com = com_addr(unit); 240057915Simp if (com == NULL) 240157915Simp return; 240251078Speter s = spltty(); 240351078Speter disable_intr(); 240451078Speter if (tp->t_state & TS_TTSTOP) 240551078Speter com->state &= ~CS_TTGO; 240651078Speter else 240751078Speter com->state |= CS_TTGO; 240851078Speter if (tp->t_state & TS_TBLOCK) { 240951078Speter if (com->mcr_image & MCR_RTS && com->state & CS_RTS_IFLOW) 241051078Speter outb(com->modem_ctl_port, com->mcr_image &= ~MCR_RTS); 241151078Speter } else { 241251078Speter if (!(com->mcr_image & MCR_RTS) && com->iptr < com->ihighwater 241351078Speter && com->state & CS_RTS_IFLOW) 241451078Speter outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); 241551078Speter } 241651078Speter enable_intr(); 241751078Speter if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) { 241851078Speter ttwwakeup(tp); 241951078Speter splx(s); 242051078Speter return; 242151078Speter } 242251078Speter if (tp->t_outq.c_cc != 0) { 242351078Speter struct lbq *qp; 242451078Speter struct lbq *next; 242551078Speter 242651078Speter if (!com->obufs[0].l_queued) { 242751078Speter com->obufs[0].l_tail 242851078Speter = com->obuf1 + q_to_b(&tp->t_outq, com->obuf1, 242951078Speter sizeof com->obuf1); 243051078Speter com->obufs[0].l_next = NULL; 243151078Speter com->obufs[0].l_queued = TRUE; 243251078Speter disable_intr(); 243351078Speter if (com->state & CS_BUSY) { 243451078Speter qp = com->obufq.l_next; 243551078Speter while ((next = qp->l_next) != NULL) 243651078Speter qp = next; 243751078Speter qp->l_next = &com->obufs[0]; 243851078Speter } else { 243951078Speter com->obufq.l_head = com->obufs[0].l_head; 244051078Speter com->obufq.l_tail = com->obufs[0].l_tail; 244151078Speter com->obufq.l_next = &com->obufs[0]; 244251078Speter com->state |= CS_BUSY; 244351078Speter } 244451078Speter enable_intr(); 244551078Speter } 244651078Speter if (tp->t_outq.c_cc != 0 && !com->obufs[1].l_queued) { 244751078Speter com->obufs[1].l_tail 244851078Speter = com->obuf2 + q_to_b(&tp->t_outq, com->obuf2, 244951078Speter sizeof com->obuf2); 245051078Speter com->obufs[1].l_next = NULL; 245151078Speter com->obufs[1].l_queued = TRUE; 245251078Speter disable_intr(); 245351078Speter if (com->state & CS_BUSY) { 245451078Speter qp = com->obufq.l_next; 245551078Speter while ((next = qp->l_next) != NULL) 245651078Speter qp = next; 245751078Speter qp->l_next = &com->obufs[1]; 245851078Speter } else { 245951078Speter com->obufq.l_head = com->obufs[1].l_head; 246051078Speter com->obufq.l_tail = com->obufs[1].l_tail; 246151078Speter com->obufq.l_next = &com->obufs[1]; 246251078Speter com->state |= CS_BUSY; 246351078Speter } 246451078Speter enable_intr(); 246551078Speter } 246651078Speter tp->t_state |= TS_BUSY; 246751078Speter } 246851078Speter disable_intr(); 246951078Speter if (com->state >= (CS_BUSY | CS_TTGO)) 247051078Speter siointr1(com); /* fake interrupt to start output */ 247151078Speter enable_intr(); 247251078Speter ttwwakeup(tp); 247351078Speter splx(s); 247451078Speter} 247551078Speter 247651078Speterstatic void 247751654Sphkcomstop(tp, rw) 247851078Speter struct tty *tp; 247951078Speter int rw; 248051078Speter{ 248151078Speter struct com_s *com; 248251078Speter 248351078Speter com = com_addr(DEV_TO_UNIT(tp->t_dev)); 248457915Simp if (com == NULL || com->gone) 248551078Speter return; 248651078Speter disable_intr(); 248751078Speter if (rw & FWRITE) { 248851078Speter if (com->hasfifo) 248951078Speter#ifdef COM_ESP 249051078Speter /* XXX avoid h/w bug. */ 249151078Speter if (!com->esp) 249251078Speter#endif 249351078Speter outb(com->iobase + com_fifo, 249451078Speter FIFO_XMT_RST | com->fifo_image); 249551078Speter com->obufs[0].l_queued = FALSE; 249651078Speter com->obufs[1].l_queued = FALSE; 249751078Speter if (com->state & CS_ODONE) 249851078Speter com_events -= LOTS_OF_EVENTS; 249951078Speter com->state &= ~(CS_ODONE | CS_BUSY); 250051078Speter com->tp->t_state &= ~TS_BUSY; 250151078Speter } 250251078Speter if (rw & FREAD) { 250351078Speter if (com->hasfifo) 250451078Speter#ifdef COM_ESP 250551078Speter /* XXX avoid h/w bug. */ 250651078Speter if (!com->esp) 250751078Speter#endif 250851078Speter outb(com->iobase + com_fifo, 250951078Speter FIFO_RCV_RST | com->fifo_image); 251051078Speter com_events -= (com->iptr - com->ibuf); 251151078Speter com->iptr = com->ibuf; 251251078Speter } 251351078Speter enable_intr(); 251451078Speter comstart(tp); 251551078Speter} 251651078Speter 251751078Speterstatic int 251851078Spetercommctl(com, bits, how) 251951078Speter struct com_s *com; 252051078Speter int bits; 252151078Speter int how; 252251078Speter{ 252351078Speter int mcr; 252451078Speter int msr; 252551078Speter 252651078Speter if (how == DMGET) { 252751078Speter bits = TIOCM_LE; /* XXX - always enabled while open */ 252851078Speter mcr = com->mcr_image; 252951078Speter if (mcr & MCR_DTR) 253051078Speter bits |= TIOCM_DTR; 253151078Speter if (mcr & MCR_RTS) 253251078Speter bits |= TIOCM_RTS; 253351078Speter msr = com->prev_modem_status; 253451078Speter if (msr & MSR_CTS) 253551078Speter bits |= TIOCM_CTS; 253651078Speter if (msr & MSR_DCD) 253751078Speter bits |= TIOCM_CD; 253851078Speter if (msr & MSR_DSR) 253951078Speter bits |= TIOCM_DSR; 254051078Speter /* 254151078Speter * XXX - MSR_RI is naturally volatile, and we make MSR_TERI 254251078Speter * more volatile by reading the modem status a lot. Perhaps 254351078Speter * we should latch both bits until the status is read here. 254451078Speter */ 254551078Speter if (msr & (MSR_RI | MSR_TERI)) 254651078Speter bits |= TIOCM_RI; 254751078Speter return (bits); 254851078Speter } 254951078Speter mcr = 0; 255051078Speter if (bits & TIOCM_DTR) 255151078Speter mcr |= MCR_DTR; 255251078Speter if (bits & TIOCM_RTS) 255351078Speter mcr |= MCR_RTS; 255451078Speter if (com->gone) 255551078Speter return(0); 255651078Speter disable_intr(); 255751078Speter switch (how) { 255851078Speter case DMSET: 255951078Speter outb(com->modem_ctl_port, 256051078Speter com->mcr_image = mcr | (com->mcr_image & MCR_IENABLE)); 256151078Speter break; 256251078Speter case DMBIS: 256351078Speter outb(com->modem_ctl_port, com->mcr_image |= mcr); 256451078Speter break; 256551078Speter case DMBIC: 256651078Speter outb(com->modem_ctl_port, com->mcr_image &= ~mcr); 256751078Speter break; 256851078Speter } 256951078Speter enable_intr(); 257051078Speter return (0); 257151078Speter} 257251078Speter 257351078Speterstatic void 257451078Spetersiosettimeout() 257551078Speter{ 257651078Speter struct com_s *com; 257751078Speter bool_t someopen; 257851078Speter int unit; 257951078Speter 258051078Speter /* 258151078Speter * Set our timeout period to 1 second if no polled devices are open. 258251078Speter * Otherwise set it to max(1/200, 1/hz). 258351078Speter * Enable timeouts iff some device is open. 258451078Speter */ 258551078Speter untimeout(comwakeup, (void *)NULL, sio_timeout_handle); 258651078Speter sio_timeout = hz; 258751078Speter someopen = FALSE; 258853344Speter for (unit = 0; unit < sio_numunits; ++unit) { 258951078Speter com = com_addr(unit); 259051078Speter if (com != NULL && com->tp != NULL 259151078Speter && com->tp->t_state & TS_ISOPEN && !com->gone) { 259251078Speter someopen = TRUE; 259351078Speter if (com->poll || com->poll_output) { 259451078Speter sio_timeout = hz > 200 ? hz / 200 : 1; 259551078Speter break; 259651078Speter } 259751078Speter } 259851078Speter } 259951078Speter if (someopen) { 260051078Speter sio_timeouts_until_log = hz / sio_timeout; 260151078Speter sio_timeout_handle = timeout(comwakeup, (void *)NULL, 260251078Speter sio_timeout); 260351078Speter } else { 260451078Speter /* Flush error messages, if any. */ 260551078Speter sio_timeouts_until_log = 1; 260651078Speter comwakeup((void *)NULL); 260751078Speter untimeout(comwakeup, (void *)NULL, sio_timeout_handle); 260851078Speter } 260951078Speter} 261051078Speter 261151078Speterstatic void 261251078Spetercomwakeup(chan) 261351078Speter void *chan; 261451078Speter{ 261551078Speter struct com_s *com; 261651078Speter int unit; 261751078Speter 261851078Speter sio_timeout_handle = timeout(comwakeup, (void *)NULL, sio_timeout); 261951078Speter 262051078Speter /* 262151078Speter * Recover from lost output interrupts. 262251078Speter * Poll any lines that don't use interrupts. 262351078Speter */ 262453344Speter for (unit = 0; unit < sio_numunits; ++unit) { 262551078Speter com = com_addr(unit); 262651078Speter if (com != NULL && !com->gone 262751078Speter && (com->state >= (CS_BUSY | CS_TTGO) || com->poll)) { 262851078Speter disable_intr(); 262951078Speter siointr1(com); 263051078Speter enable_intr(); 263151078Speter } 263251078Speter } 263351078Speter 263451078Speter /* 263551078Speter * Check for and log errors, but not too often. 263651078Speter */ 263751078Speter if (--sio_timeouts_until_log > 0) 263851078Speter return; 263951078Speter sio_timeouts_until_log = hz / sio_timeout; 264053344Speter for (unit = 0; unit < sio_numunits; ++unit) { 264151078Speter int errnum; 264251078Speter 264351078Speter com = com_addr(unit); 264451078Speter if (com == NULL) 264551078Speter continue; 264651078Speter if (com->gone) 264751078Speter continue; 264851078Speter for (errnum = 0; errnum < CE_NTYPES; ++errnum) { 264951078Speter u_int delta; 265051078Speter u_long total; 265151078Speter 265251078Speter disable_intr(); 265351078Speter delta = com->delta_error_counts[errnum]; 265451078Speter com->delta_error_counts[errnum] = 0; 265551078Speter enable_intr(); 265651078Speter if (delta == 0) 265751078Speter continue; 265851078Speter total = com->error_counts[errnum] += delta; 265951078Speter log(LOG_ERR, "sio%d: %u more %s%s (total %lu)\n", 266051078Speter unit, delta, error_desc[errnum], 266151078Speter delta == 1 ? "" : "s", total); 266251078Speter } 266351078Speter } 266451078Speter} 266551078Speter 266651078Speterstatic void 266751078Speterdisc_optim(tp, t, com) 266851078Speter struct tty *tp; 266951078Speter struct termios *t; 267051078Speter struct com_s *com; 267151078Speter{ 267251078Speter if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) 267351078Speter && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) 267451078Speter && (!(t->c_iflag & PARMRK) 267551078Speter || (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) 267651078Speter && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) 267751078Speter && linesw[tp->t_line].l_rint == ttyinput) 267851078Speter tp->t_state |= TS_CAN_BYPASS_L_RINT; 267951078Speter else 268051078Speter tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 268151078Speter com->hotchar = linesw[tp->t_line].l_hotchar; 268251078Speter} 268351078Speter 268451078Speter/* 268551078Speter * Following are all routines needed for SIO to act as console 268651078Speter */ 268751078Speter#include <sys/cons.h> 268851078Speter 268951078Speterstruct siocnstate { 269051078Speter u_char dlbl; 269151078Speter u_char dlbh; 269251078Speter u_char ier; 269351078Speter u_char cfcr; 269451078Speter u_char mcr; 269551078Speter}; 269651078Speter 269751078Speterstatic speed_t siocngetspeed __P((Port_t, struct speedtab *)); 269851078Speterstatic void siocnclose __P((struct siocnstate *sp, Port_t iobase)); 269951078Speterstatic void siocnopen __P((struct siocnstate *sp, Port_t iobase, int speed)); 270051078Speterstatic void siocntxwait __P((Port_t iobase)); 270151078Speter 270251078Speterstatic cn_probe_t siocnprobe; 270351078Speterstatic cn_init_t siocninit; 270451078Speterstatic cn_checkc_t siocncheckc; 270551078Speterstatic cn_getc_t siocngetc; 270651078Speterstatic cn_putc_t siocnputc; 270751078Speter 270851078Speter#ifdef __i386__ 270955823SyokotaCONS_DRIVER(sio, siocnprobe, siocninit, NULL, siocngetc, siocncheckc, 271055823Syokota siocnputc, NULL); 271151078Speter#endif 271251078Speter 271351078Speter/* To get the GDB related variables */ 271451078Speter#if DDB > 0 271551078Speter#include <ddb/ddb.h> 271651078Speter#endif 271751078Speter 271851078Speterstatic void 271951078Spetersiocntxwait(iobase) 272051078Speter Port_t iobase; 272151078Speter{ 272251078Speter int timo; 272351078Speter 272451078Speter /* 272551078Speter * Wait for any pending transmission to finish. Required to avoid 272651078Speter * the UART lockup bug when the speed is changed, and for normal 272751078Speter * transmits. 272851078Speter */ 272951078Speter timo = 100000; 273051078Speter while ((inb(iobase + com_lsr) & (LSR_TSRE | LSR_TXRDY)) 273151078Speter != (LSR_TSRE | LSR_TXRDY) && --timo != 0) 273251078Speter ; 273351078Speter} 273451078Speter 273551078Speter/* 273651078Speter * Read the serial port specified and try to figure out what speed 273751078Speter * it's currently running at. We're assuming the serial port has 273851078Speter * been initialized and is basicly idle. This routine is only intended 273951078Speter * to be run at system startup. 274051078Speter * 274151078Speter * If the value read from the serial port doesn't make sense, return 0. 274251078Speter */ 274351078Speter 274451078Speterstatic speed_t 274551078Spetersiocngetspeed(iobase, table) 274651078Speter Port_t iobase; 274751078Speter struct speedtab *table; 274851078Speter{ 274951078Speter int code; 275051078Speter u_char dlbh; 275151078Speter u_char dlbl; 275251078Speter u_char cfcr; 275351078Speter 275451078Speter cfcr = inb(iobase + com_cfcr); 275551078Speter outb(iobase + com_cfcr, CFCR_DLAB | cfcr); 275651078Speter 275751078Speter dlbl = inb(iobase + com_dlbl); 275851078Speter dlbh = inb(iobase + com_dlbh); 275951078Speter 276051078Speter outb(iobase + com_cfcr, cfcr); 276151078Speter 276251078Speter code = dlbh << 8 | dlbl; 276351078Speter 276453344Speter for (; table->sp_speed != -1; table++) 276551078Speter if (table->sp_code == code) 276651078Speter return (table->sp_speed); 276751078Speter 276851078Speter return 0; /* didn't match anything sane */ 276951078Speter} 277051078Speter 277151078Speterstatic void 277251078Spetersiocnopen(sp, iobase, speed) 277351078Speter struct siocnstate *sp; 277451078Speter Port_t iobase; 277551078Speter int speed; 277651078Speter{ 277751078Speter int divisor; 277851078Speter u_char dlbh; 277951078Speter u_char dlbl; 278051078Speter 278151078Speter /* 278251078Speter * Save all the device control registers except the fifo register 278351078Speter * and set our default ones (cs8 -parenb speed=comdefaultrate). 278451078Speter * We can't save the fifo register since it is read-only. 278551078Speter */ 278651078Speter sp->ier = inb(iobase + com_ier); 278751078Speter outb(iobase + com_ier, 0); /* spltty() doesn't stop siointr() */ 278851078Speter siocntxwait(iobase); 278951078Speter sp->cfcr = inb(iobase + com_cfcr); 279051078Speter outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); 279151078Speter sp->dlbl = inb(iobase + com_dlbl); 279251078Speter sp->dlbh = inb(iobase + com_dlbh); 279351078Speter /* 279451078Speter * Only set the divisor registers if they would change, since on 279551078Speter * some 16550 incompatibles (Startech), setting them clears the 279651078Speter * data input register. This also reduces the effects of the 279751078Speter * UMC8669F bug. 279851078Speter */ 279951078Speter divisor = ttspeedtab(speed, comspeedtab); 280051078Speter dlbl = divisor & 0xFF; 280151078Speter if (sp->dlbl != dlbl) 280251078Speter outb(iobase + com_dlbl, dlbl); 280351078Speter dlbh = (u_int) divisor >> 8; 280451078Speter if (sp->dlbh != dlbh) 280551078Speter outb(iobase + com_dlbh, dlbh); 280651078Speter outb(iobase + com_cfcr, CFCR_8BITS); 280751078Speter sp->mcr = inb(iobase + com_mcr); 280851078Speter /* 280951078Speter * We don't want interrupts, but must be careful not to "disable" 281051078Speter * them by clearing the MCR_IENABLE bit, since that might cause 281151078Speter * an interrupt by floating the IRQ line. 281251078Speter */ 281351078Speter outb(iobase + com_mcr, (sp->mcr & MCR_IENABLE) | MCR_DTR | MCR_RTS); 281451078Speter} 281551078Speter 281651078Speterstatic void 281751078Spetersiocnclose(sp, iobase) 281851078Speter struct siocnstate *sp; 281951078Speter Port_t iobase; 282051078Speter{ 282151078Speter /* 282251078Speter * Restore the device control registers. 282351078Speter */ 282451078Speter siocntxwait(iobase); 282551078Speter outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); 282651078Speter if (sp->dlbl != inb(iobase + com_dlbl)) 282751078Speter outb(iobase + com_dlbl, sp->dlbl); 282851078Speter if (sp->dlbh != inb(iobase + com_dlbh)) 282951078Speter outb(iobase + com_dlbh, sp->dlbh); 283051078Speter outb(iobase + com_cfcr, sp->cfcr); 283151078Speter /* 283251078Speter * XXX damp oscillations of MCR_DTR and MCR_RTS by not restoring them. 283351078Speter */ 283451078Speter outb(iobase + com_mcr, sp->mcr | MCR_DTR | MCR_RTS); 283551078Speter outb(iobase + com_ier, sp->ier); 283651078Speter} 283751078Speter 283851078Speterstatic void 283951078Spetersiocnprobe(cp) 284051078Speter struct consdev *cp; 284151078Speter{ 284251078Speter speed_t boot_speed; 284351078Speter u_char cfcr; 284451078Speter int s, unit; 284551078Speter struct siocnstate sp; 284651078Speter 284751078Speter /* 284851078Speter * Find our first enabled console, if any. If it is a high-level 284951078Speter * console device, then initialize it and return successfully. 285051078Speter * If it is a low-level console device, then initialize it and 285151078Speter * return unsuccessfully. It must be initialized in both cases 285251078Speter * for early use by console drivers and debuggers. Initializing 285351078Speter * the hardware is not necessary in all cases, since the i/o 285451078Speter * routines initialize it on the fly, but it is necessary if 285551078Speter * input might arrive while the hardware is switched back to an 285651078Speter * uninitialized state. We can't handle multiple console devices 285751078Speter * yet because our low-level routines don't take a device arg. 285851078Speter * We trust the user to set the console flags properly so that we 285951078Speter * don't need to probe. 286051078Speter */ 286151078Speter cp->cn_pri = CN_DEAD; 286251078Speter 286351078Speter for (unit = 0; unit < 16; unit++) { /* XXX need to know how many */ 286451078Speter int flags; 286551078Speter int disabled; 286651078Speter if (resource_int_value("sio", unit, "disabled", &disabled) == 0) { 286751078Speter if (disabled) 286851078Speter continue; 286951078Speter } 287051078Speter if (resource_int_value("sio", unit, "flags", &flags)) 287151078Speter continue; 287251078Speter if (COM_CONSOLE(flags) || COM_DEBUGGER(flags)) { 287351078Speter int port; 287451078Speter Port_t iobase; 287551078Speter 287651078Speter if (resource_int_value("sio", unit, "port", &port)) 287751078Speter continue; 287851078Speter iobase = port; 287951078Speter s = spltty(); 288051078Speter if (boothowto & RB_SERIAL) { 288151078Speter boot_speed = siocngetspeed(iobase, comspeedtab); 288251078Speter if (boot_speed) 288351078Speter comdefaultrate = boot_speed; 288451078Speter } 288551078Speter 288651078Speter /* 288751078Speter * Initialize the divisor latch. We can't rely on 288851078Speter * siocnopen() to do this the first time, since it 288951078Speter * avoids writing to the latch if the latch appears 289051078Speter * to have the correct value. Also, if we didn't 289151078Speter * just read the speed from the hardware, then we 289251078Speter * need to set the speed in hardware so that 289351078Speter * switching it later is null. 289451078Speter */ 289551078Speter cfcr = inb(iobase + com_cfcr); 289651078Speter outb(iobase + com_cfcr, CFCR_DLAB | cfcr); 289751078Speter outb(iobase + com_dlbl, 289851078Speter COMBRD(comdefaultrate) & 0xff); 289951078Speter outb(iobase + com_dlbh, 290051078Speter (u_int) COMBRD(comdefaultrate) >> 8); 290151078Speter outb(iobase + com_cfcr, cfcr); 290251078Speter 290351078Speter siocnopen(&sp, iobase, comdefaultrate); 290451078Speter 290551078Speter splx(s); 290651078Speter if (COM_CONSOLE(flags) && !COM_LLCONSOLE(flags)) { 290751078Speter cp->cn_dev = makedev(CDEV_MAJOR, unit); 290851078Speter cp->cn_pri = COM_FORCECONSOLE(flags) 290951078Speter || boothowto & RB_SERIAL 291051078Speter ? CN_REMOTE : CN_NORMAL; 291151078Speter siocniobase = iobase; 291251078Speter siocnunit = unit; 291351078Speter } 291451078Speter if (COM_DEBUGGER(flags)) { 291551078Speter printf("sio%d: gdb debugging port\n", unit); 291651078Speter siogdbiobase = iobase; 291751078Speter siogdbunit = unit; 291851078Speter#if DDB > 0 291951078Speter gdbdev = makedev(CDEV_MAJOR, unit); 292051078Speter gdb_getc = siocngetc; 292151078Speter gdb_putc = siocnputc; 292251078Speter#endif 292351078Speter } 292451078Speter } 292551078Speter } 292651078Speter#ifdef __i386__ 292751078Speter#if DDB > 0 292851078Speter /* 292951078Speter * XXX Ugly Compatability. 293051078Speter * If no gdb port has been specified, set it to be the console 293151078Speter * as some configuration files don't specify the gdb port. 293251078Speter */ 293351078Speter if (gdbdev == NODEV && (boothowto & RB_GDB)) { 293451078Speter printf("Warning: no GDB port specified. Defaulting to sio%d.\n", 293551078Speter siocnunit); 293651078Speter printf("Set flag 0x80 on desired GDB port in your\n"); 293751078Speter printf("configuration file (currently sio only).\n"); 293851078Speter siogdbiobase = siocniobase; 293951078Speter siogdbunit = siocnunit; 294051078Speter gdbdev = makedev(CDEV_MAJOR, siocnunit); 294151078Speter gdb_getc = siocngetc; 294251078Speter gdb_putc = siocnputc; 294351078Speter } 294451078Speter#endif 294551078Speter#endif 294651078Speter} 294751078Speter 294851078Speter#ifdef __alpha__ 294951078Speter 295055868SgallatinCONS_DRIVER(sio, NULL, NULL, NULL, siocngetc, siocncheckc, siocnputc, NULL); 295151078Speter 295251078Speterint 295351078Spetersiocnattach(port, speed) 295451078Speter int port; 295551078Speter int speed; 295651078Speter{ 295751078Speter int s; 295851078Speter u_char cfcr; 295951078Speter struct siocnstate sp; 296051078Speter 296151078Speter siocniobase = port; 296251078Speter comdefaultrate = speed; 296351078Speter sio_consdev.cn_pri = CN_NORMAL; 296451078Speter sio_consdev.cn_dev = makedev(CDEV_MAJOR, 0); 296551078Speter 296651078Speter s = spltty(); 296751078Speter 296851078Speter /* 296951078Speter * Initialize the divisor latch. We can't rely on 297051078Speter * siocnopen() to do this the first time, since it 297151078Speter * avoids writing to the latch if the latch appears 297251078Speter * to have the correct value. Also, if we didn't 297351078Speter * just read the speed from the hardware, then we 297451078Speter * need to set the speed in hardware so that 297551078Speter * switching it later is null. 297651078Speter */ 297751078Speter cfcr = inb(siocniobase + com_cfcr); 297851078Speter outb(siocniobase + com_cfcr, CFCR_DLAB | cfcr); 297951078Speter outb(siocniobase + com_dlbl, 298051078Speter COMBRD(comdefaultrate) & 0xff); 298151078Speter outb(siocniobase + com_dlbh, 298251078Speter (u_int) COMBRD(comdefaultrate) >> 8); 298351078Speter outb(siocniobase + com_cfcr, cfcr); 298451078Speter 298551078Speter siocnopen(&sp, siocniobase, comdefaultrate); 298651078Speter splx(s); 298751078Speter 298851078Speter cn_tab = &sio_consdev; 298951078Speter return 0; 299051078Speter} 299151078Speter 299251078Speterint 299351078Spetersiogdbattach(port, speed) 299451078Speter int port; 299551078Speter int speed; 299651078Speter{ 299751078Speter int s; 299851078Speter u_char cfcr; 299951078Speter struct siocnstate sp; 300051078Speter 300151078Speter siogdbiobase = port; 300251078Speter gdbdefaultrate = speed; 300351078Speter 300451078Speter s = spltty(); 300551078Speter 300651078Speter /* 300751078Speter * Initialize the divisor latch. We can't rely on 300851078Speter * siocnopen() to do this the first time, since it 300951078Speter * avoids writing to the latch if the latch appears 301051078Speter * to have the correct value. Also, if we didn't 301151078Speter * just read the speed from the hardware, then we 301251078Speter * need to set the speed in hardware so that 301351078Speter * switching it later is null. 301451078Speter */ 301551078Speter cfcr = inb(siogdbiobase + com_cfcr); 301651078Speter outb(siogdbiobase + com_cfcr, CFCR_DLAB | cfcr); 301751078Speter outb(siogdbiobase + com_dlbl, 301851078Speter COMBRD(gdbdefaultrate) & 0xff); 301951078Speter outb(siogdbiobase + com_dlbh, 302051078Speter (u_int) COMBRD(gdbdefaultrate) >> 8); 302151078Speter outb(siogdbiobase + com_cfcr, cfcr); 302251078Speter 302351078Speter siocnopen(&sp, siogdbiobase, gdbdefaultrate); 302451078Speter splx(s); 302551078Speter 302651078Speter return 0; 302751078Speter} 302851078Speter 302951078Speter#endif 303051078Speter 303151078Speterstatic void 303251078Spetersiocninit(cp) 303351078Speter struct consdev *cp; 303451078Speter{ 303551078Speter comconsole = DEV_TO_UNIT(cp->cn_dev); 303651078Speter} 303751078Speter 303851078Speterstatic int 303951078Spetersiocncheckc(dev) 304051078Speter dev_t dev; 304151078Speter{ 304251078Speter int c; 304351078Speter Port_t iobase; 304451078Speter int s; 304551078Speter struct siocnstate sp; 304651078Speter 304751078Speter if (minor(dev) == siogdbunit) 304851078Speter iobase = siogdbiobase; 304951078Speter else 305051078Speter iobase = siocniobase; 305151078Speter s = spltty(); 305251078Speter siocnopen(&sp, iobase, comdefaultrate); 305351078Speter if (inb(iobase + com_lsr) & LSR_RXRDY) 305451078Speter c = inb(iobase + com_data); 305551078Speter else 305651078Speter c = -1; 305751078Speter siocnclose(&sp, iobase); 305851078Speter splx(s); 305951078Speter return (c); 306051078Speter} 306151078Speter 306251078Speter 306351078Speterint 306451078Spetersiocngetc(dev) 306551078Speter dev_t dev; 306651078Speter{ 306751078Speter int c; 306851078Speter Port_t iobase; 306951078Speter int s; 307051078Speter struct siocnstate sp; 307151078Speter 307251078Speter if (minor(dev) == siogdbunit) 307351078Speter iobase = siogdbiobase; 307451078Speter else 307551078Speter iobase = siocniobase; 307651078Speter s = spltty(); 307751078Speter siocnopen(&sp, iobase, comdefaultrate); 307851078Speter while (!(inb(iobase + com_lsr) & LSR_RXRDY)) 307951078Speter ; 308051078Speter c = inb(iobase + com_data); 308151078Speter siocnclose(&sp, iobase); 308251078Speter splx(s); 308351078Speter return (c); 308451078Speter} 308551078Speter 308651078Spetervoid 308751078Spetersiocnputc(dev, c) 308851078Speter dev_t dev; 308951078Speter int c; 309051078Speter{ 309151078Speter int s; 309251078Speter struct siocnstate sp; 309351078Speter Port_t iobase; 309451078Speter 309551078Speter if (minor(dev) == siogdbunit) 309651078Speter iobase = siogdbiobase; 309751078Speter else 309851078Speter iobase = siocniobase; 309951078Speter s = spltty(); 310051078Speter siocnopen(&sp, iobase, comdefaultrate); 310151078Speter siocntxwait(iobase); 310251078Speter outb(iobase + com_data, c); 310351078Speter siocnclose(&sp, iobase); 310451078Speter splx(s); 310551078Speter} 310651078Speter 310751078Speter#ifdef __alpha__ 310851078Speterint 310951078Spetersiogdbgetc() 311051078Speter{ 311151078Speter int c; 311251078Speter Port_t iobase; 311351078Speter int s; 311451078Speter struct siocnstate sp; 311551078Speter 311651078Speter iobase = siogdbiobase; 311751078Speter s = spltty(); 311851078Speter siocnopen(&sp, iobase, gdbdefaultrate); 311951078Speter while (!(inb(iobase + com_lsr) & LSR_RXRDY)) 312051078Speter ; 312151078Speter c = inb(iobase + com_data); 312251078Speter siocnclose(&sp, iobase); 312351078Speter splx(s); 312451078Speter return (c); 312551078Speter} 312651078Speter 312751078Spetervoid 312851078Spetersiogdbputc(c) 312951078Speter int c; 313051078Speter{ 313151078Speter int s; 313251078Speter struct siocnstate sp; 313351078Speter 313451078Speter s = spltty(); 313551078Speter siocnopen(&sp, siogdbiobase, gdbdefaultrate); 313651078Speter siocntxwait(siogdbiobase); 313751078Speter outb(siogdbiobase + com_data, c); 313851078Speter siocnclose(&sp, siogdbiobase); 313951078Speter splx(s); 314051078Speter} 314151078Speter#endif 314251078Speter 314352471SimpDRIVER_MODULE(sio, isa, sio_isa_driver, sio_devclass, 0, 0); 314452471Simp#if NCARD > 0 314552471SimpDRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, 0, 0); 314652471Simp#endif 3147