+++ /dev/null
-/* $OpenBSD: com.c,v 1.28 1996/11/29 22:54:52 niklas Exp $ */
-/* $NetBSD: com.c,v 1.82.4.1 1996/06/02 09:08:00 mrg Exp $ */
-
-/*-
- * Copyright (c) 1993, 1994, 1995, 1996
- * Charles M. Hannum. All rights reserved.
- * Copyright (c) 1991 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)com.c 7.5 (Berkeley) 5/16/91
- */
-
-/*
- * COM driver, based on HP dca driver
- * uses National Semiconductor NS16450/NS16550AF UART
- */
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/ioctl.h>
-#include <sys/select.h>
-#include <sys/tty.h>
-#include <sys/proc.h>
-#include <sys/user.h>
-#include <sys/conf.h>
-#include <sys/file.h>
-#include <sys/uio.h>
-#include <sys/kernel.h>
-#include <sys/syslog.h>
-#include <sys/types.h>
-#include <sys/device.h>
-
-#include <machine/bus.h>
-#include <machine/intr.h>
-
-#include <dev/isa/isavar.h>
-#include <dev/isa/comreg.h>
-#include <dev/isa/comvar.h>
-#include <dev/ic/ns16550reg.h>
-#ifdef COM_HAYESP
-#include <dev/ic/hayespreg.h>
-#endif
-#define com_lcr com_cfcr
-
-#include "com.h"
-
-
-#define COM_IBUFSIZE (2 * 512)
-#define COM_IHIGHWATER ((3 * COM_IBUFSIZE) / 4)
-
-struct com_softc {
- struct device sc_dev;
- void *sc_ih;
- bus_space_tag_t sc_iot;
- struct tty *sc_tty;
-
- int sc_overflows;
- int sc_floods;
- int sc_errors;
-
- int sc_halt;
-
- int sc_iobase;
-#ifdef COM_HAYESP
- int sc_hayespbase;
-#endif
-
- bus_space_handle_t sc_ioh;
- bus_space_handle_t sc_hayespioh;
- isa_chipset_tag_t sc_ic;
-
- u_char sc_hwflags;
-#define COM_HW_NOIEN 0x01
-#define COM_HW_FIFO 0x02
-#define COM_HW_HAYESP 0x04
-#define COM_HW_ABSENT_PENDING 0x08 /* reattached, awaiting close/reopen */
-#define COM_HW_ABSENT 0x10 /* configure actually failed, or removed */
-#define COM_HW_REATTACH 0x20 /* reattaching */
-#define COM_HW_CONSOLE 0x40
- u_char sc_swflags;
-#define COM_SW_SOFTCAR 0x01
-#define COM_SW_CLOCAL 0x02
-#define COM_SW_CRTSCTS 0x04
-#define COM_SW_MDMBUF 0x08
- u_char sc_msr, sc_mcr, sc_lcr, sc_ier;
- u_char sc_dtr;
-
- u_char sc_cua;
-
- u_char sc_initialize; /* force initialization */
-
- u_char *sc_ibuf, *sc_ibufp, *sc_ibufhigh, *sc_ibufend;
- u_char sc_ibufs[2][COM_IBUFSIZE];
-};
-
-#ifdef COM_HAYESP
-int comprobeHAYESP __P((bus_space_handle_t hayespioh, struct com_softc *sc));
-#endif
-void comdiag __P((void *));
-int comspeed __P((long));
-int comparam __P((struct tty *, struct termios *));
-void comstart __P((struct tty *));
-void compoll __P((void *));
-
-/* XXX: These belong elsewhere */
-cdev_decl(com);
-bdev_decl(com);
-
-struct consdev;
-void comcnprobe __P((struct consdev *));
-void comcninit __P((struct consdev *));
-int comcngetc __P((dev_t));
-void comcnputc __P((dev_t, int));
-void comcnpollc __P((dev_t, int));
-
-static u_char tiocm_xxx2mcr __P((int));
-
-/*
- * XXX the following two cfattach structs should be different, and possibly
- * XXX elsewhere.
- */
-int comprobe __P((struct device *, void *, void *));
-void comattach __P((struct device *, struct device *, void *));
-void com_absent_notify __P((struct com_softc *sc));
-void comstart_pending __P((void *));
-
-#if NCOM_ISA
-struct cfattach com_isa_ca = {
- sizeof(struct com_softc), comprobe, comattach
-};
-#endif
-
-#if NCOM_COMMULTI
-struct cfattach com_commulti_ca = {
- sizeof(struct com_softc), comprobe, comattach
-};
-#endif
-
-#if NCOM_PICA
-#undef CONADDR /* This is stupid but using devs before config .. */
-#define CONADDR 0xe0006000
-
-struct cfattach com_pica_ca = {
- sizeof(struct com_softc), comprobe, comattach
-};
-#endif
-
-struct cfdriver com_cd = {
- NULL, "com", DV_TTY
-};
-
-#ifndef CONSPEED
-#define CONSPEED B9600
-#endif
-
-#ifdef COMCONSOLE
-int comdefaultrate = CONSPEED; /* XXX why set default? */
-#else
-int comdefaultrate = TTYDEF_SPEED;
-#endif
-int comconsaddr;
-int comconsinit;
-int comconsattached;
-bus_space_tag_t comconsiot;
-bus_space_handle_t comconsioh;
-tcflag_t comconscflag = TTYDEF_CFLAG;
-
-int commajor;
-int comsopen = 0;
-int comevents = 0;
-
-#ifdef KGDB
-#include <machine/remote-sl.h>
-extern int kgdb_dev;
-extern int kgdb_rate;
-extern int kgdb_debug_init;
-#endif
-
-#define DEVUNIT(x) (minor(x) & 0x7f)
-#define DEVCUA(x) (minor(x) & 0x80)
-
-/* Macros to clear/set/test flags. */
-#define SET(t, f) (t) |= (f)
-#define CLR(t, f) (t) &= ~(f)
-#define ISSET(t, f) ((t) & (f))
-
-#if NCOM_PCMCIA
-#include <dev/pcmcia/pcmciavar.h>
-
-int com_pcmcia_match __P((struct device *, void *, void *));
-void com_pcmcia_attach __P((struct device *, struct device *, void *));
-int com_pcmcia_detach __P((struct device *));
-
-struct cfattach com_pcmcia_ca = {
- sizeof(struct com_softc), com_pcmcia_match, comattach,
- com_pcmcia_detach
-};
-
-int com_pcmcia_mod __P((struct pcmcia_link *pc_link, struct device *self,
- struct pcmcia_conf *pc_cf, struct cfdata *cf));
-
-/* additional setup needed for pcmcia devices */
-/* modify config entry */
-int
-com_pcmcia_mod(pc_link, self, pc_cf, cf)
- struct pcmcia_link *pc_link;
- struct device *self;
- struct pcmcia_conf *pc_cf;
- struct cfdata *cf;
-{
- int err;
-
- if (!(err = PCMCIA_BUS_CONFIG(pc_link->adapter, pc_link, self,
- pc_cf, cf))) {
- pc_cf->memwin = 0;
- if (pc_cf->cfgtype == 0)
- pc_cf->cfgtype = CFGENTRYID; /* determine from ioaddr */
- }
- return err;
-}
-
-int com_pcmcia_isa_attach __P((struct device *, void *, void *,
- struct pcmcia_link *));
-int com_pcmcia_remove __P((struct pcmcia_link *, struct device *));
-
-static struct pcmcia_com {
- struct pcmcia_device pcd;
-} pcmcia_com = {
- {"PCMCIA Modem card", com_pcmcia_mod, com_pcmcia_isa_attach,
- NULL, com_pcmcia_remove}
-};
-
-
-struct pcmciadevs pcmcia_com_devs[] = {
- { "com", 0,
- NULL, "*MODEM*", NULL, NULL,
- NULL, (void *)&pcmcia_com
- },
- { "com", 0,
- NULL, NULL, "*MODEM*", NULL,
- NULL, (void *)&pcmcia_com
- },
- { "com", 0,
- NULL, NULL, NULL, "*MODEM*",
- NULL, (void *)&pcmcia_com
- },
- {NULL}
-};
-#define ncom_pcmcia_devs sizeof(pcmcia_com_devs)/sizeof(pcmcia_com_devs[0])
-
-int
-com_pcmcia_match(parent, match, aux)
- struct device *parent;
- void *match, *aux;
-{
- return pcmcia_slave_match(parent, match, aux, pcmcia_com_devs,
- ncom_pcmcia_devs);
-}
-
-int
-com_pcmcia_isa_attach(parent, match, aux, pc_link)
- struct device *parent;
- void *match;
- void *aux;
- struct pcmcia_link *pc_link;
-{
- struct isa_attach_args *ia = aux;
- struct com_softc *sc = match;
- int rval;
-
- if ((rval = comprobe(parent, sc->sc_dev.dv_cfdata, ia))) {
- if (ISSET(pc_link->flags, PCMCIA_REATTACH)) {
-#ifdef COM_DEBUG
- printf("comreattach, hwflags=%x\n", sc->sc_hwflags);
-#endif
- sc->sc_hwflags = COM_HW_REATTACH |
- (sc->sc_hwflags & (COM_HW_ABSENT_PENDING|COM_HW_CONSOLE));
- } else
- sc->sc_hwflags = 0;
- sc->sc_ic = ia->ia_ic;
- }
- return rval;
-}
-
-
-/*
- * Called by config_detach attempts, shortly after com_pcmcia_remove
- * was called.
- */
-int
-com_pcmcia_detach(self)
- struct device *self;
-{
- struct com_softc *sc = (void *)self;
-
- if (ISSET(sc->sc_hwflags, COM_HW_ABSENT_PENDING)) {
- /* don't let it really be detached, it is still open */
- return EBUSY;
- }
- return 0; /* OK! */
-}
-
-/*
- * called by pcmcia framework to accept/reject remove attempts.
- * If we return 0, then the detach will proceed.
- */
-int
-com_pcmcia_remove(pc_link, self)
- struct pcmcia_link *pc_link;
- struct device *self;
-{
- struct com_softc *sc = (void *)self;
- struct tty *tp;
- int s;
-
- if (!sc->sc_tty)
- goto ok;
- tp = sc->sc_tty;
-
- /* not in use ? if so, return "OK" */
- if (!ISSET(tp->t_state, TS_ISOPEN) &&
- !ISSET(tp->t_state, TS_WOPEN)) {
- ttyfree(sc->sc_tty);
- sc->sc_tty = NULL;
- ok:
- isa_intr_disestablish(sc->sc_ic, sc->sc_ih);
- sc->sc_ih = NULL;
- SET(sc->sc_hwflags, COM_HW_ABSENT);
- return 0; /* OK! */
- }
- /*
- * Not easily removed. Put device into a dead state, clean state
- * as best we can. notify all waiters.
- */
- SET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING);
-#ifdef COM_DEBUG
- printf("pending detach flags %x\n", sc->sc_hwflags);
-#endif
-
- s = spltty();
- com_absent_notify(sc);
- splx(s);
-
- return 0;
-}
-
-#if 0
-void
-com_pcmcia_attach(parent, self, aux)
- struct device *parent, *self;
- void *aux;
-{
- struct pcmcia_attach_args *paa = aux;
-
- printf("com_pcmcia_attach %p %p %p\n", parent, self, aux);
- delay(2000000);
- if (!pcmcia_configure(parent, self, paa->paa_link)) {
- struct com_softc *sc = (void *)self;
- sc->sc_hwflags |= COM_HW_ABSENT;
- printf(": not attached\n");
- }
-}
-#endif
-#endif
-
-/*
- * must be called at spltty() or higher.
- */
-void
-com_absent_notify(sc)
- struct com_softc *sc;
-{
- struct tty *tp = sc->sc_tty;
-
- if (tp) {
- CLR(tp->t_state, TS_CARR_ON|TS_BUSY);
- ttyflush(tp, FREAD|FWRITE);
- }
-}
-
-int
-comspeed(speed)
- long speed;
-{
-#define divrnd(n, q) (((n)*2/(q)+1)/2) /* divide and round off */
-
- int x, err;
-
- if (speed == 0)
- return 0;
- if (speed < 0)
- return -1;
- x = divrnd((COM_FREQ / 16), speed);
- if (x <= 0)
- return -1;
- err = divrnd((COM_FREQ / 16) * 1000, speed * x) - 1000;
- if (err < 0)
- err = -err;
- if (err > COM_TOLERANCE)
- return -1;
- return x;
-
-#undef divrnd(n, q)
-}
-
-int
-comprobe1(iot, ioh, iobase)
- bus_space_tag_t iot;
- bus_space_handle_t ioh;
- int iobase;
-{
- int i, k;
-
- /* force access to id reg */
- bus_space_write_1(iot, ioh, com_lcr, 0);
- bus_space_write_1(iot, ioh, com_iir, 0);
- for (i = 0; i < 32; i++) {
- k = bus_space_read_1(iot, ioh, com_iir);
- if (k & 0x38) {
- bus_space_read_1(iot, ioh, com_data); /* cleanup */
- } else
- break;
- }
- if (i >= 32)
- return 0;
-
- return 1;
-}
-
-#ifdef COM_HAYESP
-int
-comprobeHAYESP(hayespioh, sc)
- bus_space_handle_t hayespioh;
- struct com_softc *sc;
-{
- char val, dips;
- int combaselist[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
- bus_space_tag_t iot = sc->sc_iot;
-
- /*
- * Hayes ESP cards have two iobases. One is for compatibility with
- * 16550 serial chips, and at the same ISA PC base addresses. The
- * other is for ESP-specific enhanced features, and lies at a
- * different addressing range entirely (0x140, 0x180, 0x280, or 0x300).
- */
-
- /* Test for ESP signature */
- if ((bus_space_read_1(iot, hayespioh, 0) & 0xf3) == 0)
- return 0;
-
- /*
- * ESP is present at ESP enhanced base address; unknown com port
- */
-
- /* Get the dip-switch configurations */
- bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_GETDIPS);
- dips = bus_space_read_1(iot, hayespioh, HAYESP_STATUS1);
-
- /* Determine which com port this ESP card services: bits 0,1 of */
- /* dips is the port # (0-3); combaselist[val] is the com_iobase */
- if (sc->sc_iobase != combaselist[dips & 0x03])
- return 0;
-
- printf(": ESP");
-
- /* Check ESP Self Test bits. */
- /* Check for ESP version 2.0: bits 4,5,6 == 010 */
- bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_GETTEST);
- val = bus_space_read_1(iot, hayespioh, HAYESP_STATUS1); /* Clear reg 1 */
- val = bus_space_read_1(iot, hayespioh, HAYESP_STATUS2);
- if ((val & 0x70) < 0x20) {
- printf("-old (%o)", val & 0x70);
- /* we do not support the necessary features */
- return 0;
- }
-
- /* Check for ability to emulate 16550: bit 8 == 1 */
- if ((dips & 0x80) == 0) {
- printf(" slave");
- /* XXX Does slave really mean no 16550 support?? */
- return 0;
- }
-
- /*
- * If we made it this far, we are a full-featured ESP v2.0 (or
- * better), at the correct com port address.
- */
-
- SET(sc->sc_hwflags, COM_HW_HAYESP);
- printf(", 1024 byte fifo\n");
- return 1;
-}
-#endif
-
-int
-comprobe(parent, match, aux)
- struct device *parent;
- void *match, *aux;
-{
- bus_space_tag_t iot;
- bus_space_handle_t ioh;
- int iobase, needioh;
- int rv = 1;
-
-#if NCOM_ISA || NCOM_PCMCIA
-#define IS_ISA(parent) \
- (!strcmp((parent)->dv_cfdata->cf_driver->cd_name, "isa") || \
- !strcmp((parent)->dv_cfdata->cf_driver->cd_name, "pcmcia"))
-#elif NCOM_ISA
-#define IS_ISA(parent) \
- !strcmp((parent)->dv_cfdata->cf_driver->cd_name, "isa")
-#endif
-#if NCOM_PICA
-#define IS_PICA(parent) \
- !strcmp((parent)->dv_cfdata->cf_driver->cd_name, "pica")
-#endif
- /*
- * XXX should be broken out into functions for isa probe and
- * XXX for commulti probe, with a helper function that contains
- * XXX most of the interesting stuff.
- */
-#if NCOM_ISA || NCOM_PCMCIA
- if (IS_ISA(parent)) {
- struct isa_attach_args *ia = aux;
-
- iot = ia->ia_iot;
- iobase = ia->ia_iobase;
- needioh = 1;
- } else
-#endif
-#if NCOM_COMMULTI
- if (1) {
- struct cfdata *cf = match;
- struct commulti_attach_args *ca = aux;
-
- if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != ca->ca_slave)
- return (0);
-
- iot = ca->ca_iot;
- iobase = ca->ca_iobase;
- ioh = ca->ca_ioh;
- needioh = 0;
- } else
-#endif
-#if NCOM_PICA
- if(IS_PICA(parent)) {
- struct confargs *ca = aux;
- if(!BUS_MATCHNAME(ca, "com"))
- return(0);
- iobase = (long)BUS_CVTADDR(ca);
- iot = 0;
- needioh = 1;
- } else
-#endif
- return(0); /* This cannot happen */
-
- /* if it's in use as console, it's there. */
- if (iobase == comconsaddr && !comconsattached)
- goto out;
-
- if (needioh && bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
- rv = 0;
- goto out;
- }
- rv = comprobe1(iot, ioh, iobase);
- if (needioh)
- bus_space_unmap(iot, ioh, COM_NPORTS);
-
-out:
-#if NCOM_ISA || NCOM_PCMCIA
- if (rv && IS_ISA(parent)) {
- struct isa_attach_args *ia = aux;
-
- ia->ia_iosize = COM_NPORTS;
- ia->ia_msize = 0;
- }
-#endif
- return (rv);
-}
-
-void
-comattach(parent, self, aux)
- struct device *parent, *self;
- void *aux;
-{
- struct com_softc *sc = (void *)self;
- int iobase, irq;
- bus_space_tag_t iot;
- bus_space_handle_t ioh;
-#ifdef COM_HAYESP
- int hayesp_ports[] = { 0x140, 0x180, 0x280, 0x300, 0 };
- int *hayespp;
-#endif
-
- /*
- * XXX should be broken out into functions for isa attach and
- * XXX for commulti attach, with a helper function that contains
- * XXX most of the interesting stuff.
- */
- if (ISSET(sc->sc_hwflags, COM_HW_REATTACH)) {
- int s;
- s = spltty();
- com_absent_notify(sc);
- splx(s);
- } else
- sc->sc_hwflags = 0;
- sc->sc_swflags = 0;
-#if NCOM_ISA || NCOM_PCMCIA
- if (IS_ISA(parent)) {
- struct isa_attach_args *ia = aux;
-
- /*
- * We're living on an isa.
- */
- iobase = ia->ia_iobase;
- iot = ia->ia_iot;
- if (iobase != comconsaddr) {
- if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh))
- panic("comattach: io mapping failed");
- } else
- ioh = comconsioh;
- irq = ia->ia_irq;
- } else
-#endif
-#if NCOM_COMMULTI
- if (1) {
- struct commulti_attach_args *ca = aux;
-
- /*
- * We're living on a commulti.
- */
- iobase = ca->ca_iobase;
- iot = ca->ca_iot;
- ioh = ca->ca_ioh;
- irq = IRQUNK;
-
- if (ca->ca_noien)
- SET(sc->sc_hwflags, COM_HW_NOIEN);
- } else
-#endif
-#if NCOM_PICA
- if(IS_PICA(parent)) {
- struct confargs *ca = aux;
- iobase = (long)BUS_CVTADDR(ca);
- iot = 0;
- irq = 0;
- ioh = iobase;
- } else
-#endif
- panic("comattach: impossible");
-
- sc->sc_iot = iot;
- sc->sc_ioh = ioh;
- sc->sc_iobase = iobase;
-
- if (iobase == comconsaddr) {
- comconsattached = 1;
-
- /*
- * Need to reset baud rate, etc. of next print so reset
- * comconsinit. Also make sure console is always "hardwired".
- */
- delay(1000); /* wait for output to finish */
- comconsinit = 0;
- SET(sc->sc_hwflags, COM_HW_CONSOLE);
- SET(sc->sc_swflags, COM_SW_SOFTCAR);
- }
-
-#ifdef COM_HAYESP
- /* Look for a Hayes ESP board. */
- for (hayespp = hayesp_ports; *hayespp != 0; hayespp++) {
- bus_space_handle_t hayespioh;
-
-#define HAYESP_NPORTS 8 /* XXX XXX XXX ??? ??? ??? */
- if (bus_space_map(iot, *hayespp, HAYESP_NPORTS, 0, &hayespioh))
- continue;
- if (comprobeHAYESP(hayespioh, sc)) {
- sc->sc_hayespbase = *hayespp;
- sc->sc_hayespioh = hayespioh;
- break;
- }
- bus_space_unmap(iot, hayespioh, HAYESP_NPORTS);
- }
- /* No ESP; look for other things. */
- if (*hayespp == 0) {
-#endif
-
- /* look for a NS 16550AF UART with FIFOs */
- bus_space_write_1(iot, ioh, com_fifo,
- FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_14);
- delay(100);
- if (ISSET(bus_space_read_1(iot, ioh, com_iir), IIR_FIFO_MASK) ==
- IIR_FIFO_MASK)
- if (ISSET(bus_space_read_1(iot, ioh, com_fifo), FIFO_TRIGGER_14) ==
- FIFO_TRIGGER_14) {
- SET(sc->sc_hwflags, COM_HW_FIFO);
- printf(": ns16550a, working fifo\n");
- } else
- printf(": ns16550, broken fifo\n");
- else
- printf(": ns8250 or ns16450, no fifo\n");
- bus_space_write_1(iot, ioh, com_fifo, 0);
-#ifdef COM_HAYESP
- }
-#endif
-
- /* disable interrupts */
- bus_space_write_1(iot, ioh, com_ier, 0);
- bus_space_write_1(iot, ioh, com_mcr, 0);
-
- if (irq != IRQUNK) {
-#if NCOM_ISA || NCOM_PCMCIA
- if (IS_ISA(parent)) {
- struct isa_attach_args *ia = aux;
-
- sc->sc_ih = isa_intr_establish(ia->ia_ic, irq,
- IST_EDGE, IPL_TTY, comintr, sc,
- sc->sc_dev.dv_xname);
- } else
-#endif
-#if NCOM_PICA
- if (IS_PICA(parent)) {
- struct confargs *ca = aux;
- BUS_INTR_ESTABLISH(ca, comintr, (void *)(long)sc);
- } else
-#endif
- panic("comattach: IRQ but can't have one");
- }
-
-#ifdef KGDB
- if (kgdb_dev == makedev(commajor, unit)) {
- if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE))
- kgdb_dev = -1; /* can't debug over console port */
- else {
- cominit(iot, ioh, kgdb_rate);
- if (kgdb_debug_init) {
- /*
- * Print prefix of device name,
- * let kgdb_connect print the rest.
- */
- printf("%s: ", sc->sc_dev.dv_xname);
- kgdb_connect(1);
- } else
- printf("%s: kgdb enabled\n",
- sc->sc_dev.dv_xname);
- }
- }
-#endif
-
- /* XXX maybe move up some? */
- if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE))
- printf("%s: console\n", sc->sc_dev.dv_xname);
-}
-
-int
-comopen(dev, flag, mode, p)
- dev_t dev;
- int flag, mode;
- struct proc *p;
-{
- int unit = DEVUNIT(dev);
- struct com_softc *sc;
- bus_space_tag_t iot;
- bus_space_handle_t ioh;
- struct tty *tp;
- int s;
- int error = 0;
-
- if (unit >= com_cd.cd_ndevs)
- return ENXIO;
- sc = com_cd.cd_devs[unit];
- if (!sc || ISSET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING))
- return ENXIO;
-
- s = spltty();
- if (!sc->sc_tty) {
- tp = sc->sc_tty = ttymalloc();
- tty_attach(tp);
- } else
- tp = sc->sc_tty;
- splx(s);
-
- tp->t_oproc = comstart;
- tp->t_param = comparam;
- tp->t_dev = dev;
- if (!ISSET(tp->t_state, TS_ISOPEN)) {
- SET(tp->t_state, TS_WOPEN);
- ttychars(tp);
- tp->t_iflag = TTYDEF_IFLAG;
- tp->t_oflag = TTYDEF_OFLAG;
- if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE))
- tp->t_cflag = comconscflag;
- else
- tp->t_cflag = TTYDEF_CFLAG;
- if (ISSET(sc->sc_swflags, COM_SW_CLOCAL))
- SET(tp->t_cflag, CLOCAL);
- if (ISSET(sc->sc_swflags, COM_SW_CRTSCTS))
- SET(tp->t_cflag, CRTSCTS);
- if (ISSET(sc->sc_swflags, COM_SW_MDMBUF))
- SET(tp->t_cflag, MDMBUF);
- tp->t_lflag = TTYDEF_LFLAG;
- tp->t_ispeed = tp->t_ospeed = comdefaultrate;
-
- s = spltty();
-
- sc->sc_initialize = 1;
- comparam(tp, &tp->t_termios);
- ttsetwater(tp);
-
- if (comsopen++ == 0)
- timeout(compoll, NULL, 1);
-
- sc->sc_ibufp = sc->sc_ibuf = sc->sc_ibufs[0];
- sc->sc_ibufhigh = sc->sc_ibuf + COM_IHIGHWATER;
- sc->sc_ibufend = sc->sc_ibuf + COM_IBUFSIZE;
-
- iot = sc->sc_iot;
- ioh = sc->sc_ioh;
-#ifdef COM_HAYESP
- /* Setup the ESP board */
- if (ISSET(sc->sc_hwflags, COM_HW_HAYESP)) {
- bus_space_handle_t hayespioh = sc->sc_hayespioh;
-
- bus_space_write_1(iot, ioh, com_fifo,
- FIFO_DMA_MODE|FIFO_ENABLE|
- FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER_8);
-
- /* Set 16550 compatibility mode */
- bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_SETMODE);
- bus_space_write_1(iot, hayespioh, HAYESP_CMD2,
- HAYESP_MODE_FIFO|HAYESP_MODE_RTS|
- HAYESP_MODE_SCALE);
-
- /* Set RTS/CTS flow control */
- bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_SETFLOWTYPE);
- bus_space_write_1(iot, hayespioh, HAYESP_CMD2, HAYESP_FLOW_RTS);
- bus_space_write_1(iot, hayespioh, HAYESP_CMD2, HAYESP_FLOW_CTS);
-
- /* Set flow control levels */
- bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_SETRXFLOW);
- bus_space_write_1(iot, hayespioh, HAYESP_CMD2,
- HAYESP_HIBYTE(HAYESP_RXHIWMARK));
- bus_space_write_1(iot, hayespioh, HAYESP_CMD2,
- HAYESP_LOBYTE(HAYESP_RXHIWMARK));
- bus_space_write_1(iot, hayespioh, HAYESP_CMD2,
- HAYESP_HIBYTE(HAYESP_RXLOWMARK));
- bus_space_write_1(iot, hayespioh, HAYESP_CMD2,
- HAYESP_LOBYTE(HAYESP_RXLOWMARK));
- } else
-#endif
- if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) {
- /*
- * (Re)enable and drain FIFOs.
- *
- * Certain SMC chips cause problems if the FIFOs are
- * enabled while input is ready. Turn off the FIFO
- * if necessary to clear the input. Test the input
- * ready bit after enabling the FIFOs to handle races
- * between enabling and fresh input.
- *
- * Set the FIFO threshold based on the receive speed.
- */
- for (;;) {
- bus_space_write_1(iot, ioh, com_fifo, 0);
- delay(100);
- (void) bus_space_read_1(iot, ioh, com_data);
- bus_space_write_1(iot, ioh, com_fifo,
- FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST |
- (tp->t_ispeed <= 1200 ?
- FIFO_TRIGGER_1 : FIFO_TRIGGER_8));
- delay(100);
- if(!ISSET(bus_space_read_1(iot, ioh,
- com_lsr), LSR_RXRDY))
- break;
- }
- }
-
- /* flush any pending I/O */
- while (ISSET(bus_space_read_1(iot, ioh, com_lsr), LSR_RXRDY))
- (void) bus_space_read_1(iot, ioh, com_data);
- /* you turn me on, baby */
- sc->sc_mcr = MCR_DTR | MCR_RTS;
- if (!ISSET(sc->sc_hwflags, COM_HW_NOIEN))
- SET(sc->sc_mcr, MCR_IENABLE);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- sc->sc_ier = IER_ERXRDY | IER_ERLS | IER_EMSC;
- bus_space_write_1(iot, ioh, com_ier, sc->sc_ier);
-
- sc->sc_msr = bus_space_read_1(iot, ioh, com_msr);
- if (ISSET(sc->sc_swflags, COM_SW_SOFTCAR) || DEVCUA(dev) ||
- ISSET(sc->sc_msr, MSR_DCD) || ISSET(tp->t_cflag, MDMBUF))
- SET(tp->t_state, TS_CARR_ON);
- else
- CLR(tp->t_state, TS_CARR_ON);
- } else if (ISSET(tp->t_state, TS_XCLUDE) && p->p_ucred->cr_uid != 0)
- return EBUSY;
- else
- s = spltty();
-
- if (DEVCUA(dev)) {
- if (ISSET(tp->t_state, TS_ISOPEN)) {
- /* Ah, but someone already is dialed in... */
- splx(s);
- return EBUSY;
- }
- sc->sc_cua = 1; /* We go into CUA mode */
- }
-
- /* wait for carrier if necessary */
- if (ISSET(flag, O_NONBLOCK)) {
- if (!DEVCUA(dev) && sc->sc_cua) {
- /* Opening TTY non-blocking... but the CUA is busy */
- splx(s);
- return EBUSY;
- }
- } else {
- while (!(DEVCUA(dev) && sc->sc_cua) &&
- !ISSET(tp->t_cflag, CLOCAL) &&
- !ISSET(tp->t_state, TS_CARR_ON)) {
- SET(tp->t_state, TS_WOPEN);
- error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH,
- ttopen, 0);
- if (error) {
- /* XXX should turn off chip if we're the
- only waiter */
- if (DEVCUA(dev))
- sc->sc_cua = 0;
- splx(s);
- return error;
- }
- }
- }
- splx(s);
-
- return (*linesw[tp->t_line].l_open)(dev, tp);
-}
-
-int
-comclose(dev, flag, mode, p)
- dev_t dev;
- int flag, mode;
- struct proc *p;
-{
- int unit = DEVUNIT(dev);
- struct com_softc *sc = com_cd.cd_devs[unit];
- struct tty *tp = sc->sc_tty;
- bus_space_tag_t iot = sc->sc_iot;
- bus_space_handle_t ioh = sc->sc_ioh;
- int s;
-
- /* XXX This is for cons.c. */
- if (!ISSET(tp->t_state, TS_ISOPEN))
- return 0;
-
- (*linesw[tp->t_line].l_close)(tp, flag);
- s = spltty();
- if (!ISSET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING)) {
- /* can't do any of this stuff .... */
- CLR(sc->sc_lcr, LCR_SBREAK);
- bus_space_write_1(iot, ioh, com_lcr, sc->sc_lcr);
- bus_space_write_1(iot, ioh, com_ier, 0);
- if (ISSET(tp->t_cflag, HUPCL) &&
- !ISSET(sc->sc_swflags, COM_SW_SOFTCAR)) {
- /* XXX perhaps only clear DTR */
- bus_space_write_1(iot, ioh, com_mcr, 0);
- }
- }
- CLR(tp->t_state, TS_BUSY | TS_FLUSH);
- if (--comsopen == 0)
- untimeout(compoll, NULL);
- sc->sc_cua = 0;
- splx(s);
- ttyclose(tp);
-#ifdef COM_DEBUG
- /* mark it ready for more use if reattached earlier */
- if (ISSET(sc->sc_hwflags, COM_HW_ABSENT_PENDING)) {
- printf("comclose pending cleared\n");
- }
-#endif
- CLR(sc->sc_hwflags, COM_HW_ABSENT_PENDING);
-
-#ifdef notyet /* XXXX */
- if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE)) {
- ttyfree(tp);
- sc->sc_tty = 0;
- }
-#endif
- return 0;
-}
-
-int
-comread(dev, uio, flag)
- dev_t dev;
- struct uio *uio;
- int flag;
-{
- struct com_softc *sc = com_cd.cd_devs[DEVUNIT(dev)];
- struct tty *tp = sc->sc_tty;
-
- if (ISSET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING)) {
- int s = spltty();
- com_absent_notify(sc);
- splx(s);
- return EIO;
- }
-
- return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
-}
-
-int
-comwrite(dev, uio, flag)
- dev_t dev;
- struct uio *uio;
- int flag;
-{
- struct com_softc *sc = com_cd.cd_devs[DEVUNIT(dev)];
- struct tty *tp = sc->sc_tty;
-
- if (ISSET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING)) {
- int s = spltty();
- com_absent_notify(sc);
- splx(s);
- return EIO;
- }
-
- return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
-}
-
-struct tty *
-comtty(dev)
- dev_t dev;
-{
- struct com_softc *sc = com_cd.cd_devs[DEVUNIT(dev)];
- struct tty *tp = sc->sc_tty;
-
- return (tp);
-}
-
-static u_char
-tiocm_xxx2mcr(data)
- int data;
-{
- u_char m = 0;
-
- if (ISSET(data, TIOCM_DTR))
- SET(m, MCR_DTR);
- if (ISSET(data, TIOCM_RTS))
- SET(m, MCR_RTS);
- return m;
-}
-
-int
-comioctl(dev, cmd, data, flag, p)
- dev_t dev;
- u_long cmd;
- caddr_t data;
- int flag;
- struct proc *p;
-{
- int unit = DEVUNIT(dev);
- struct com_softc *sc = com_cd.cd_devs[unit];
- struct tty *tp = sc->sc_tty;
- bus_space_tag_t iot = sc->sc_iot;
- bus_space_handle_t ioh = sc->sc_ioh;
- int error;
-
- if (ISSET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING)) {
- int s = spltty();
- com_absent_notify(sc);
- splx(s);
- return EIO;
- }
-
- error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
- if (error >= 0)
- return error;
- error = ttioctl(tp, cmd, data, flag, p);
- if (error >= 0)
- return error;
-
- switch (cmd) {
- case TIOCSBRK:
- SET(sc->sc_lcr, LCR_SBREAK);
- bus_space_write_1(iot, ioh, com_lcr, sc->sc_lcr);
- break;
- case TIOCCBRK:
- CLR(sc->sc_lcr, LCR_SBREAK);
- bus_space_write_1(iot, ioh, com_lcr, sc->sc_lcr);
- break;
- case TIOCSDTR:
- SET(sc->sc_mcr, sc->sc_dtr);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- break;
- case TIOCCDTR:
- CLR(sc->sc_mcr, sc->sc_dtr);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- break;
- case TIOCMSET:
- CLR(sc->sc_mcr, MCR_DTR | MCR_RTS);
- case TIOCMBIS:
- SET(sc->sc_mcr, tiocm_xxx2mcr(*(int *)data));
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- break;
- case TIOCMBIC:
- CLR(sc->sc_mcr, tiocm_xxx2mcr(*(int *)data));
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- break;
- case TIOCMGET: {
- u_char m;
- int bits = 0;
-
- m = sc->sc_mcr;
- if (ISSET(m, MCR_DTR))
- SET(bits, TIOCM_DTR);
- if (ISSET(m, MCR_RTS))
- SET(bits, TIOCM_RTS);
- m = sc->sc_msr;
- if (ISSET(m, MSR_DCD))
- SET(bits, TIOCM_CD);
- if (ISSET(m, MSR_CTS))
- SET(bits, TIOCM_CTS);
- if (ISSET(m, MSR_DSR))
- SET(bits, TIOCM_DSR);
- if (ISSET(m, MSR_RI | MSR_TERI))
- SET(bits, TIOCM_RI);
- if (bus_space_read_1(iot, ioh, com_ier))
- SET(bits, TIOCM_LE);
- *(int *)data = bits;
- break;
- }
- case TIOCGFLAGS: {
- int driverbits, userbits = 0;
-
- driverbits = sc->sc_swflags;
- if (ISSET(driverbits, COM_SW_SOFTCAR))
- SET(userbits, TIOCFLAG_SOFTCAR);
- if (ISSET(driverbits, COM_SW_CLOCAL))
- SET(userbits, TIOCFLAG_CLOCAL);
- if (ISSET(driverbits, COM_SW_CRTSCTS))
- SET(userbits, TIOCFLAG_CRTSCTS);
- if (ISSET(driverbits, COM_SW_MDMBUF))
- SET(userbits, TIOCFLAG_MDMBUF);
-
- *(int *)data = userbits;
- break;
- }
- case TIOCSFLAGS: {
- int userbits, driverbits = 0;
-
- error = suser(p->p_ucred, &p->p_acflag);
- if (error != 0)
- return(EPERM);
-
- userbits = *(int *)data;
- if (ISSET(userbits, TIOCFLAG_SOFTCAR) ||
- ISSET(sc->sc_hwflags, COM_HW_CONSOLE))
- SET(driverbits, COM_SW_SOFTCAR);
- if (ISSET(userbits, TIOCFLAG_CLOCAL))
- SET(driverbits, COM_SW_CLOCAL);
- if (ISSET(userbits, TIOCFLAG_CRTSCTS))
- SET(driverbits, COM_SW_CRTSCTS);
- if (ISSET(userbits, TIOCFLAG_MDMBUF))
- SET(driverbits, COM_SW_MDMBUF);
-
- sc->sc_swflags = driverbits;
- break;
- }
- default:
- return ENOTTY;
- }
-
- return 0;
-}
-
-int
-comparam(tp, t)
- struct tty *tp;
- struct termios *t;
-{
- struct com_softc *sc = com_cd.cd_devs[DEVUNIT(tp->t_dev)];
- bus_space_tag_t iot = sc->sc_iot;
- bus_space_handle_t ioh = sc->sc_ioh;
- int ospeed = comspeed(t->c_ospeed);
- u_char lcr;
- tcflag_t oldcflag;
- int s;
-
- if (ISSET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING)) {
- int s = spltty();
- com_absent_notify(sc);
- splx(s);
- return EIO;
- }
-
- /* check requested parameters */
- if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed))
- return EINVAL;
-
- lcr = ISSET(sc->sc_lcr, LCR_SBREAK);
-
- switch (ISSET(t->c_cflag, CSIZE)) {
- case CS5:
- SET(lcr, LCR_5BITS);
- break;
- case CS6:
- SET(lcr, LCR_6BITS);
- break;
- case CS7:
- SET(lcr, LCR_7BITS);
- break;
- case CS8:
- SET(lcr, LCR_8BITS);
- break;
- }
- if (ISSET(t->c_cflag, PARENB)) {
- SET(lcr, LCR_PENAB);
- if (!ISSET(t->c_cflag, PARODD))
- SET(lcr, LCR_PEVEN);
- }
- if (ISSET(t->c_cflag, CSTOPB))
- SET(lcr, LCR_STOPB);
-
- sc->sc_lcr = lcr;
-
- s = spltty();
-
- if (ospeed == 0) {
- CLR(sc->sc_mcr, MCR_DTR);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- }
-
- /*
- * Set the FIFO threshold based on the receive speed, if we are
- * changing it.
- */
- if (sc->sc_initialize || (tp->t_ispeed != t->c_ispeed)) {
- sc->sc_initialize = 0;
-
- if (ospeed != 0) {
- /*
- * Make sure the transmit FIFO is empty before
- * proceeding. If we don't do this, some revisions
- * of the UART will hang. Interestingly enough,
- * even if we do this will the last character is
- * still being pushed out, they don't hang. This
- * seems good enough.
- */
- while (ISSET(tp->t_state, TS_BUSY)) {
- int error;
-
- ++sc->sc_halt;
- error = ttysleep(tp, &tp->t_outq,
- TTOPRI | PCATCH, "comprm", 0);
- --sc->sc_halt;
- if (error) {
- splx(s);
- comstart(tp);
- return (error);
- }
- }
-
- bus_space_write_1(iot, ioh, com_lcr, lcr | LCR_DLAB);
- bus_space_write_1(iot, ioh, com_dlbl, ospeed);
- bus_space_write_1(iot, ioh, com_dlbh, ospeed >> 8);
- bus_space_write_1(iot, ioh, com_lcr, lcr);
- SET(sc->sc_mcr, MCR_DTR);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- } else
- bus_space_write_1(iot, ioh, com_lcr, lcr);
-
- if (!ISSET(sc->sc_hwflags, COM_HW_HAYESP) &&
- ISSET(sc->sc_hwflags, COM_HW_FIFO))
- bus_space_write_1(iot, ioh, com_fifo,
- FIFO_ENABLE |
- (t->c_ispeed <= 1200 ? FIFO_TRIGGER_1 : FIFO_TRIGGER_8));
- } else
- bus_space_write_1(iot, ioh, com_lcr, lcr);
-
- /* When not using CRTSCTS, RTS follows DTR. */
- if (!ISSET(t->c_cflag, CRTSCTS)) {
- if (ISSET(sc->sc_mcr, MCR_DTR)) {
- if (!ISSET(sc->sc_mcr, MCR_RTS)) {
- SET(sc->sc_mcr, MCR_RTS);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- }
- } else {
- if (ISSET(sc->sc_mcr, MCR_RTS)) {
- CLR(sc->sc_mcr, MCR_RTS);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- }
- }
- sc->sc_dtr = MCR_DTR | MCR_RTS;
- } else
- sc->sc_dtr = MCR_DTR;
-
- /* and copy to tty */
- tp->t_ispeed = t->c_ispeed;
- tp->t_ospeed = t->c_ospeed;
- oldcflag = tp->t_cflag;
- tp->t_cflag = t->c_cflag;
-
- /*
- * If DCD is off and MDMBUF is changed, ask the tty layer if we should
- * stop the device.
- */
- if (!ISSET(sc->sc_msr, MSR_DCD) &&
- !ISSET(sc->sc_swflags, COM_SW_SOFTCAR) &&
- ISSET(oldcflag, MDMBUF) != ISSET(tp->t_cflag, MDMBUF) &&
- (*linesw[tp->t_line].l_modem)(tp, 0) == 0) {
- CLR(sc->sc_mcr, sc->sc_dtr);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- }
-
- /* Just to be sure... */
- splx(s);
- comstart(tp);
- return 0;
-}
-
-void
-comstart_pending(arg)
- void *arg;
-{
- struct com_softc *sc = arg;
- int s;
-
- s = spltty();
- com_absent_notify(sc);
- splx(s);
-}
-
-void
-comstart(tp)
- struct tty *tp;
-{
- struct com_softc *sc = com_cd.cd_devs[DEVUNIT(tp->t_dev)];
- bus_space_tag_t iot = sc->sc_iot;
- bus_space_handle_t ioh = sc->sc_ioh;
- int s;
-
- s = spltty();
- if (ISSET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING)) {
- /*
- * not quite good enough: if caller is ttywait() it will
- * go to sleep immediately, so hang out a bit and then
- * prod caller again.
- */
- com_absent_notify(sc);
- timeout(comstart_pending, sc, 1);
- goto out;
- }
- if (ISSET(tp->t_state, TS_BUSY))
- goto out;
- if (ISSET(tp->t_state, TS_TIMEOUT | TS_TTSTOP) ||
- sc->sc_halt > 0)
- goto stopped;
- if (ISSET(tp->t_cflag, CRTSCTS) && !ISSET(sc->sc_msr, MSR_CTS))
- goto stopped;
- if (tp->t_outq.c_cc <= tp->t_lowat) {
- if (ISSET(tp->t_state, TS_ASLEEP)) {
- CLR(tp->t_state, TS_ASLEEP);
- wakeup(&tp->t_outq);
- }
- if (tp->t_outq.c_cc == 0)
- goto stopped;
- selwakeup(&tp->t_wsel);
- }
- SET(tp->t_state, TS_BUSY);
-
- if (!ISSET(sc->sc_ier, IER_ETXRDY)) {
- SET(sc->sc_ier, IER_ETXRDY);
- bus_space_write_1(iot, ioh, com_ier, sc->sc_ier);
- }
-#ifdef COM_HAYESP
- if (ISSET(sc->sc_hwflags, COM_HW_HAYESP)) {
- u_char buffer[1024], *cp = buffer;
- int n = q_to_b(&tp->t_outq, cp, sizeof buffer);
- do
- bus_space_write_1(iot, ioh, com_data, *cp++);
- while (--n);
- }
- else
-#endif
- if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) {
- u_char buffer[16], *cp = buffer;
- int n = q_to_b(&tp->t_outq, cp, sizeof buffer);
- do {
- bus_space_write_1(iot, ioh, com_data, *cp++);
- } while (--n);
- } else
- bus_space_write_1(iot, ioh, com_data, getc(&tp->t_outq));
-out:
- splx(s);
- return;
-stopped:
- if (ISSET(sc->sc_ier, IER_ETXRDY)) {
- CLR(sc->sc_ier, IER_ETXRDY);
- bus_space_write_1(iot, ioh, com_ier, sc->sc_ier);
- }
- splx(s);
-}
-
-/*
- * Stop output on a line.
- */
-int
-comstop(tp, flag)
- struct tty *tp;
- int flag;
-{
- int s;
-
- s = spltty();
- if (ISSET(tp->t_state, TS_BUSY))
- if (!ISSET(tp->t_state, TS_TTSTOP))
- SET(tp->t_state, TS_FLUSH);
- splx(s);
- return 0;
-}
-
-void
-comdiag(arg)
- void *arg;
-{
- struct com_softc *sc = arg;
- int overflows, floods;
- int s;
-
- s = spltty();
- sc->sc_errors = 0;
- overflows = sc->sc_overflows;
- sc->sc_overflows = 0;
- floods = sc->sc_floods;
- sc->sc_floods = 0;
- splx(s);
-
- log(LOG_WARNING, "%s: %d silo overflow%s, %d ibuf overflow%s\n",
- sc->sc_dev.dv_xname,
- overflows, overflows == 1 ? "" : "s",
- floods, floods == 1 ? "" : "s");
-}
-
-void
-compoll(arg)
- void *arg;
-{
- int unit;
- struct com_softc *sc;
- struct tty *tp;
- register u_char *ibufp;
- u_char *ibufend;
- register int c;
- int s;
- static int lsrmap[8] = {
- 0, TTY_PE,
- TTY_FE, TTY_PE|TTY_FE,
- TTY_FE, TTY_PE|TTY_FE,
- TTY_FE, TTY_PE|TTY_FE
- };
-
- s = spltty();
- if (comevents == 0) {
- splx(s);
- goto out;
- }
- comevents = 0;
- splx(s);
-
- for (unit = 0; unit < com_cd.cd_ndevs; unit++) {
- sc = com_cd.cd_devs[unit];
- if (sc == 0 || sc->sc_ibufp == sc->sc_ibuf)
- continue;
-
- tp = sc->sc_tty;
-
- s = spltty();
-
- ibufp = sc->sc_ibuf;
- ibufend = sc->sc_ibufp;
-
- if (ibufp == ibufend) {
- splx(s);
- continue;
- }
-
- sc->sc_ibufp = sc->sc_ibuf = (ibufp == sc->sc_ibufs[0]) ?
- sc->sc_ibufs[1] : sc->sc_ibufs[0];
- sc->sc_ibufhigh = sc->sc_ibuf + COM_IHIGHWATER;
- sc->sc_ibufend = sc->sc_ibuf + COM_IBUFSIZE;
-
- if (tp == 0 || !ISSET(tp->t_state, TS_ISOPEN)) {
- splx(s);
- continue;
- }
-
- if (ISSET(tp->t_cflag, CRTSCTS) &&
- !ISSET(sc->sc_mcr, MCR_RTS)) {
- /* XXX */
- SET(sc->sc_mcr, MCR_RTS);
- bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_mcr,
- sc->sc_mcr);
- }
-
- splx(s);
-
- while (ibufp < ibufend) {
- c = *ibufp++;
- if (*ibufp & LSR_OE) {
- sc->sc_overflows++;
- if (sc->sc_errors++ == 0)
- timeout(comdiag, sc, 60 * hz);
- }
- /* This is ugly, but fast. */
- c |= lsrmap[(*ibufp++ & (LSR_BI|LSR_FE|LSR_PE)) >> 2];
- (*linesw[tp->t_line].l_rint)(c, tp);
- }
- }
-
-out:
- timeout(compoll, NULL, 1);
-}
-
-int
-comintr(arg)
- void *arg;
-{
- struct com_softc *sc = arg;
- bus_space_tag_t iot = sc->sc_iot;
- bus_space_handle_t ioh = sc->sc_ioh;
- struct tty *tp;
- u_char lsr, data, msr, delta;
-#ifdef COM_DEBUG
- int n;
- struct {
- u_char iir, lsr, msr;
- } iter[32];
-#endif
-
- if (ISSET(sc->sc_hwflags, COM_HW_ABSENT) || !sc->sc_tty)
- return 0; /* can't do squat. */
-
-#ifdef COM_DEBUG
- n = 0;
- if (ISSET(iter[n].iir = bus_space_read_1(iot, ioh, com_iir), IIR_NOPEND))
- return (0);
-#else
- if (ISSET(bus_space_read_1(iot, ioh, com_iir), IIR_NOPEND))
- return (0);
-#endif
-
- tp = sc->sc_tty;
-
- for (;;) {
-#ifdef COM_DEBUG
- iter[n].lsr =
-#endif
- lsr = bus_space_read_1(iot, ioh, com_lsr);
-
- if (ISSET(lsr, LSR_RXRDY)) {
- register u_char *p = sc->sc_ibufp;
-
- comevents = 1;
- do {
- data = bus_space_read_1(iot, ioh, com_data);
- if (ISSET(lsr, LSR_BI)) {
-#ifdef notdef
- printf("break %02x %02x %02x %02x\n",
- sc->sc_msr, sc->sc_mcr, sc->sc_lcr,
- sc->sc_dtr);
-#endif
-#ifdef DDB
- if (ISSET(sc->sc_hwflags,
- COM_HW_CONSOLE)) {
- Debugger();
- goto next;
- }
-#endif
- data = 0;
- }
- if (p >= sc->sc_ibufend) {
- sc->sc_floods++;
- if (sc->sc_errors++ == 0)
- timeout(comdiag, sc, 60 * hz);
- } else {
- *p++ = data;
- *p++ = lsr;
- if (p == sc->sc_ibufhigh &&
- ISSET(tp->t_cflag, CRTSCTS)) {
- /* XXX */
- CLR(sc->sc_mcr, MCR_RTS);
- bus_space_write_1(iot, ioh, com_mcr,
- sc->sc_mcr);
- }
- }
-#ifdef DDB
- next:
-#endif
-#ifdef COM_DEBUG
- if (++n >= 32)
- goto ohfudge;
- iter[n].lsr =
-#endif
- lsr = bus_space_read_1(iot, ioh, com_lsr);
- } while (ISSET(lsr, LSR_RXRDY));
-
- sc->sc_ibufp = p;
- }
-#ifdef COM_DEBUG
- else if (ISSET(lsr, LSR_BI|LSR_FE|LSR_PE|LSR_OE))
- printf("weird lsr %02x\n", lsr);
-#endif
-
-#ifdef COM_DEBUG
- iter[n].msr =
-#endif
- msr = bus_space_read_1(iot, ioh, com_msr);
-
- if (msr != sc->sc_msr) {
- delta = msr ^ sc->sc_msr;
- sc->sc_msr = msr;
- if (ISSET(delta, MSR_DCD) &&
- !ISSET(sc->sc_swflags, COM_SW_SOFTCAR) &&
- (*linesw[tp->t_line].l_modem)(tp, ISSET(msr, MSR_DCD)) == 0) {
- CLR(sc->sc_mcr, sc->sc_dtr);
- bus_space_write_1(iot, ioh, com_mcr, sc->sc_mcr);
- }
- if (ISSET(delta & msr, MSR_CTS) &&
- ISSET(tp->t_cflag, CRTSCTS)) {
- /* the line is up and we want to do rts/cts flow control */
- (*linesw[tp->t_line].l_start)(tp);
- }
- }
-
- if (ISSET(lsr, LSR_TXRDY) && ISSET(tp->t_state, TS_BUSY)) {
- CLR(tp->t_state, TS_BUSY | TS_FLUSH);
- if (sc->sc_halt > 0)
- wakeup(&tp->t_outq);
- (*linesw[tp->t_line].l_start)(tp);
- }
-
-#ifdef COM_DEBUG
- if (++n >= 32)
- goto ohfudge;
- if (ISSET(iter[n].iir = bus_space_read_1(iot, ioh, com_iir), IIR_NOPEND))
- return (1);
-#else
- if (ISSET(bus_space_read_1(iot, ioh, com_iir), IIR_NOPEND))
- return (1);
-#endif
- }
-#ifdef COM_DEBUG
-ohfudge:
- printf("comintr: too many iterations");
- for (n = 0; n < 32; n++) {
- if ((n % 4) == 0)
- printf("\ncomintr: iter[%02d]", n);
- printf(" %02x %02x %02x", iter[n].iir, iter[n].lsr, iter[n].msr);
- }
- printf("\n");
- printf("comintr: msr %02x mcr %02x lcr %02x ier %02x\n",
- sc->sc_msr, sc->sc_mcr, sc->sc_lcr, sc->sc_ier);
- printf("comintr: state %08x cc %d\n", sc->sc_tty->t_state,
- sc->sc_tty->t_outq.c_cc);
-#endif
-}
-
-/*
- * Following are all routines needed for COM to act as console
- */
-#include <dev/cons.h>
-
-void
-comcnprobe(cp)
- struct consdev *cp;
-{
- /* XXX NEEDS TO BE FIXED XXX */
- bus_space_tag_t iot = 0;
- bus_space_handle_t ioh;
- int found;
-#if NCOM_PICA
- /* XXX */
-#include <arc/arc/arctype.h>
- extern int cputype;
-
- if(cputype != ACER_PICA_61)
- return;
-#endif
-
- if (bus_space_map(iot, CONADDR, COM_NPORTS, 0, &ioh)) {
- cp->cn_pri = CN_DEAD;
- return;
- }
- found = comprobe1(iot, ioh, CONADDR);
- bus_space_unmap(iot, ioh, COM_NPORTS);
- if (!found) {
- cp->cn_pri = CN_DEAD;
- return;
- }
-
- /* locate the major number */
- for (commajor = 0; commajor < nchrdev; commajor++)
- if (cdevsw[commajor].d_open == comopen)
- break;
-
- /* initialize required fields */
- cp->cn_dev = makedev(commajor, CONUNIT);
-#ifdef COMCONSOLE
- cp->cn_pri = CN_REMOTE; /* Force a serial port console */
-#else
- cp->cn_pri = CN_NORMAL;
-#endif
-}
-
-void
-comcninit(cp)
- struct consdev *cp;
-{
-
-#if 0
- XXX NEEDS TO BE FIXED XXX
- comconsiot = ???;
-#endif
- if (bus_space_map(comconsiot, CONADDR, COM_NPORTS, 0, &comconsioh))
- panic("comcninit: mapping failed");
-
- cominit(comconsiot, comconsioh, comdefaultrate);
- comconsaddr = CONADDR;
- comconsinit = 0;
-}
-
-void
-cominit(iot, ioh, rate)
- bus_space_tag_t iot;
- bus_space_handle_t ioh;
- int rate;
-{
- int s = splhigh();
- u_char stat;
-
- bus_space_write_1(iot, ioh, com_lcr, LCR_DLAB);
- rate = comspeed(comdefaultrate);
- bus_space_write_1(iot, ioh, com_dlbl, rate);
- bus_space_write_1(iot, ioh, com_dlbh, rate >> 8);
- bus_space_write_1(iot, ioh, com_lcr, LCR_8BITS);
- bus_space_write_1(iot, ioh, com_ier, IER_ERXRDY | IER_ETXRDY);
- bus_space_write_1(iot, ioh, com_fifo, FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_4);
- stat = bus_space_read_1(iot, ioh, com_iir);
- splx(s);
-}
-
-int
-comcngetc(dev)
- dev_t dev;
-{
- int s = splhigh();
- bus_space_tag_t iot = comconsiot;
- bus_space_handle_t ioh = comconsioh;
- u_char stat, c;
-
- while (!ISSET(stat = bus_space_read_1(iot, ioh, com_lsr), LSR_RXRDY))
- ;
- c = bus_space_read_1(iot, ioh, com_data);
- stat = bus_space_read_1(iot, ioh, com_iir);
- splx(s);
- return c;
-}
-
-/*
- * Console kernel output character routine.
- */
-void
-comcnputc(dev, c)
- dev_t dev;
- int c;
-{
- int s = splhigh();
- bus_space_tag_t iot = comconsiot;
- bus_space_handle_t ioh = comconsioh;
- u_char stat;
- register int timo;
-
-#ifdef KGDB
- if (dev != kgdb_dev)
-#endif
- if (comconsinit == 0) {
- cominit(iot, ioh, comdefaultrate);
- comconsinit = 1;
- }
- /* wait for any pending transmission to finish */
- timo = 50000;
- while (!ISSET(stat = bus_space_read_1(iot, ioh, com_lsr), LSR_TXRDY) && --timo)
- ;
- bus_space_write_1(iot, ioh, com_data, c);
- /* wait for this transmission to complete */
- timo = 1500000;
- while (!ISSET(stat = bus_space_read_1(iot, ioh, com_lsr), LSR_TXRDY) && --timo)
- ;
- /* clear any interrupts generated by this transmission */
- stat = bus_space_read_1(iot, ioh, com_iir);
- splx(s);
-}
-
-void
-comcnpollc(dev, on)
- dev_t dev;
- int on;
-{
-
-}
--- /dev/null
+/* $OpenBSD: com_pcmcia.c,v 1.1 1996/11/30 13:39:24 niklas Exp $ */
+/* $NetBSD: com.c,v 1.82.4.1 1996/06/02 09:08:00 mrg Exp $ */
+
+/*-
+ * Copyright (c) 1993, 1994, 1995, 1996
+ * Charles M. Hannum. All rights reserved.
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/tty.h>
+
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <dev/isa/isavar.h>
+
+#include <dev/ic/comreg.h>
+#include <dev/ic/comvar.h>
+#include <dev/ic/ns16550reg.h>
+
+#include <dev/pcmcia/pcmciavar.h>
+
+/* Macros to clear/set/test flags. */
+#define SET(t, f) (t) |= (f)
+#define CLR(t, f) (t) &= ~(f)
+#define ISSET(t, f) ((t) & (f))
+
+int com_pcmcia_match __P((struct device *, void *, void *));
+void com_pcmcia_attach __P((struct device *, struct device *, void *));
+int com_pcmcia_detach __P((struct device *));
+
+int com_pcmcia_mod __P((struct pcmcia_link *pc_link, struct device *self,
+ struct pcmcia_conf *pc_cf, struct cfdata *cf));
+int com_pcmcia_isa_attach __P((struct device *, void *, void *,
+ struct pcmcia_link *));
+int com_pcmcia_remove __P((struct pcmcia_link *, struct device *));
+int com_pcmcia_probe __P((struct device *, void *, void *));
+
+struct cfattach com_pcmcia_ca = {
+ sizeof(struct com_softc), com_pcmcia_match, com_pcmcia_attach,
+ com_pcmcia_detach
+};
+
+/* additional setup needed for pcmcia devices */
+/* modify config entry */
+int
+com_pcmcia_mod(pc_link, self, pc_cf, cf)
+ struct pcmcia_link *pc_link;
+ struct device *self;
+ struct pcmcia_conf *pc_cf;
+ struct cfdata *cf;
+{
+ int err;
+
+ if (!(err = PCMCIA_BUS_CONFIG(pc_link->adapter, pc_link, self,
+ pc_cf, cf))) {
+ pc_cf->memwin = 0;
+ if (pc_cf->cfgtype == 0)
+ pc_cf->cfgtype = CFGENTRYID; /* determine from ioaddr */
+ }
+ return err;
+}
+
+static struct pcmcia_com {
+ struct pcmcia_device pcd;
+} pcmcia_com = {
+ {"PCMCIA Modem card", com_pcmcia_mod, com_pcmcia_isa_attach,
+ NULL, com_pcmcia_remove}
+};
+
+
+struct pcmciadevs pcmcia_com_devs[] = {
+ { "com", 0,
+ NULL, "*MODEM*", NULL, NULL,
+ NULL, (void *)&pcmcia_com
+ },
+ { "com", 0,
+ NULL, NULL, "*MODEM*", NULL,
+ NULL, (void *)&pcmcia_com
+ },
+ { "com", 0,
+ NULL, NULL, NULL, "*MODEM*",
+ NULL, (void *)&pcmcia_com
+ },
+ {NULL}
+};
+#define ncom_pcmcia_devs sizeof(pcmcia_com_devs)/sizeof(pcmcia_com_devs[0])
+
+int
+com_pcmcia_match(parent, match, aux)
+ struct device *parent;
+ void *match, *aux;
+{
+ return pcmcia_slave_match(parent, match, aux, pcmcia_com_devs,
+ ncom_pcmcia_devs);
+}
+
+int
+com_pcmcia_isa_attach(parent, match, aux, pc_link)
+ struct device *parent;
+ void *match;
+ void *aux;
+ struct pcmcia_link *pc_link;
+{
+ struct isa_attach_args *ia = aux;
+ struct com_softc *sc = match;
+ int rval;
+
+ if ((rval = com_pcmcia_probe(parent, sc->sc_dev.dv_cfdata, ia))) {
+ if (ISSET(pc_link->flags, PCMCIA_REATTACH)) {
+#ifdef COM_DEBUG
+ printf("comreattach, hwflags=%x\n", sc->sc_hwflags);
+#endif
+ sc->sc_hwflags = COM_HW_REATTACH | (sc->sc_hwflags &
+ (COM_HW_ABSENT_PENDING|COM_HW_CONSOLE));
+ } else
+ sc->sc_hwflags = 0;
+ sc->sc_ic = ia->ia_ic;
+ }
+ return rval;
+}
+
+
+/*
+ * Called by config_detach attempts, shortly after com_pcmcia_remove
+ * was called.
+ */
+int
+com_pcmcia_detach(self)
+ struct device *self;
+{
+ struct com_softc *sc = (void *)self;
+
+ if (ISSET(sc->sc_hwflags, COM_HW_ABSENT_PENDING)) {
+ /* don't let it really be detached, it is still open */
+ return EBUSY;
+ }
+ return 0; /* OK! */
+}
+
+/*
+ * called by pcmcia framework to accept/reject remove attempts.
+ * If we return 0, then the detach will proceed.
+ */
+int
+com_pcmcia_remove(pc_link, self)
+ struct pcmcia_link *pc_link;
+ struct device *self;
+{
+ struct com_softc *sc = (void *)self;
+ struct tty *tp;
+ int s;
+
+ if (!sc->sc_tty)
+ goto ok;
+ tp = sc->sc_tty;
+
+ /* not in use ? if so, return "OK" */
+ if (!ISSET(tp->t_state, TS_ISOPEN) &&
+ !ISSET(tp->t_state, TS_WOPEN)) {
+ ttyfree(sc->sc_tty);
+ sc->sc_tty = NULL;
+ ok:
+ isa_intr_disestablish(sc->sc_ic, sc->sc_ih);
+ sc->sc_ih = NULL;
+ SET(sc->sc_hwflags, COM_HW_ABSENT);
+ return 0; /* OK! */
+ }
+ /*
+ * Not easily removed. Put device into a dead state, clean state
+ * as best we can. notify all waiters.
+ */
+ SET(sc->sc_hwflags, COM_HW_ABSENT|COM_HW_ABSENT_PENDING);
+#ifdef COM_DEBUG
+ printf("pending detach flags %x\n", sc->sc_hwflags);
+#endif
+
+ s = spltty();
+ com_absent_notify(sc);
+ splx(s);
+
+ return 0;
+}
+
+#if 0
+void
+com_pcmcia_attach(parent, self, aux)
+ struct device *parent, *self;
+ void *aux;
+{
+ struct pcmcia_attach_args *paa = aux;
+
+ printf("com_pcmcia_attach %p %p %p\n", parent, self, aux);
+ delay(2000000);
+ if (!pcmcia_configure(parent, self, paa->paa_link)) {
+ struct com_softc *sc = (void *)self;
+ sc->sc_hwflags |= COM_HW_ABSENT;
+ printf(": not attached\n");
+ }
+}
+#endif
+
+int
+com_pcmcia_probe(parent, match, aux)
+ struct device *parent;
+ void *match, *aux;
+{
+ bus_space_tag_t iot;
+ bus_space_handle_t ioh;
+ int iobase, needioh;
+ int rv = 1;
+ struct isa_attach_args *ia = aux;
+
+ iot = ia->ia_iot;
+ iobase = ia->ia_iobase;
+ needioh = 1;
+
+ /* if it's in use as console, it's there. */
+ if (iobase == comconsaddr && !comconsattached)
+ goto out;
+
+ if (needioh && bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
+ rv = 0;
+ goto out;
+ }
+ rv = comprobe1(iot, ioh, iobase);
+ if (needioh)
+ bus_space_unmap(iot, ioh, COM_NPORTS);
+
+out:
+ ia->ia_iosize = COM_NPORTS;
+ ia->ia_msize = 0;
+ return (rv);
+}
+
+void
+com_pcmcia_attach(parent, self, aux)
+ struct device *parent, *self;
+ void *aux;
+{
+ struct com_softc *sc = (void *)self;
+ int iobase, irq;
+ bus_space_tag_t iot;
+ bus_space_handle_t ioh;
+ struct isa_attach_args *ia = aux;
+
+ if (ISSET(sc->sc_hwflags, COM_HW_REATTACH)) {
+ int s;
+ s = spltty();
+ com_absent_notify(sc);
+ splx(s);
+ } else
+ sc->sc_hwflags = 0;
+ sc->sc_swflags = 0;
+
+ /*
+ * We're living on an isa.
+ */
+ iobase = ia->ia_iobase;
+ iot = ia->ia_iot;
+ if (iobase != comconsaddr) {
+ if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh))
+ panic("comattach: io mapping failed");
+ } else
+ ioh = comconsioh;
+ irq = ia->ia_irq;
+
+ sc->sc_iot = iot;
+ sc->sc_ioh = ioh;
+ sc->sc_iobase = iobase;
+
+ if (iobase == comconsaddr) {
+ comconsattached = 1;
+
+ /*
+ * Need to reset baud rate, etc. of next print so reset
+ * comconsinit. Also make sure console is always "hardwired".
+ */
+ delay(1000); /* wait for output to finish */
+ comconsinit = 0;
+ SET(sc->sc_hwflags, COM_HW_CONSOLE);
+ SET(sc->sc_swflags, COM_SW_SOFTCAR);
+ }
+
+ /* look for a NS 16550AF UART with FIFOs */
+ bus_space_write_1(iot, ioh, com_fifo,
+ FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_14);
+ delay(100);
+ if (ISSET(bus_space_read_1(iot, ioh, com_iir), IIR_FIFO_MASK) ==
+ IIR_FIFO_MASK)
+ if (ISSET(bus_space_read_1(iot, ioh, com_fifo),
+ FIFO_TRIGGER_14) == FIFO_TRIGGER_14) {
+ SET(sc->sc_hwflags, COM_HW_FIFO);
+ printf(": ns16550a, working fifo\n");
+ } else
+ printf(": ns16550, broken fifo\n");
+ else
+ printf(": ns8250 or ns16450, no fifo\n");
+ bus_space_write_1(iot, ioh, com_fifo, 0);
+
+ /* disable interrupts */
+ bus_space_write_1(iot, ioh, com_ier, 0);
+ bus_space_write_1(iot, ioh, com_mcr, 0);
+
+ if (irq != IRQUNK) {
+ struct isa_attach_args *ia = aux;
+
+ sc->sc_ih = isa_intr_establish(ia->ia_ic, irq,
+ IST_EDGE, IPL_TTY, comintr, sc, sc->sc_dev.dv_xname);
+ }
+
+#ifdef KGDB
+ if (kgdb_dev == makedev(commajor, unit)) {
+ if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE))
+ kgdb_dev = -1; /* can't debug over console port */
+ else {
+ cominit(iot, ioh, kgdb_rate);
+ if (kgdb_debug_init) {
+ /*
+ * Print prefix of device name,
+ * let kgdb_connect print the rest.
+ */
+ printf("%s: ", sc->sc_dev.dv_xname);
+ kgdb_connect(1);
+ } else
+ printf("%s: kgdb enabled\n",
+ sc->sc_dev.dv_xname);
+ }
+ }
+#endif
+
+ /* XXX maybe move up some? */
+ if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE))
+ printf("%s: console\n", sc->sc_dev.dv_xname);
+}
projects / openbsd / commitdiff