change zsinfo to a zs_softc, and impliment intr counts. mostly from OpenBSD.
This commit is contained in:
mrg
parent
08bd090b26
commit
6ce8e31376
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@ -1,4 +1,4 @@
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/* $NetBSD: zs.c,v 1.37 1996/04/01 17:29:44 christos Exp $ */
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/* $NetBSD: zs.c,v 1.38 1996/05/28 14:06:28 mrg Exp $ */
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/*
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* Copyright (c) 1992, 1993
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@ -48,10 +48,13 @@
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* Zilog Z8530 (ZSCC) driver.
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*
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* Runs two tty ports (ttya and ttyb) on zs0,
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* and runs a keyboard and mouse on zs1.
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* and runs a keyboard and mouse on zs1, and
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* possibly two more tty ports (ttyc and ttyd) on zs2.
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*
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* This driver knows far too much about chip to usage mappings.
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*/
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#include "zs.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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@ -68,14 +71,12 @@
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#include <machine/autoconf.h>
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#include <machine/conf.h>
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#include <machine/cpu.h>
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#include <machine/kbd.h>
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#include <sparc/sparc/vaddrs.h>
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#include <sparc/sparc/auxreg.h>
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#include <machine/kbd.h>
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#include <sparc/dev/zsreg.h>
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#include <dev/ic/z8530reg.h>
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#include <sparc/dev/zsvar.h>
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#ifdef KGDB
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@ -104,13 +105,13 @@
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#endif
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/*
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* Software state per found chip. This would be called `zs_softc',
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* but the previous driver had a rather different zs_softc....
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* Software state per found chip.
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*/
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struct zsinfo {
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struct device zi_dev; /* base device */
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volatile struct zsdevice *zi_zs;/* chip registers */
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struct zs_chanstate zi_cs[2]; /* channel A and B software state */
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struct zs_softc {
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struct device sc_dev; /* base device */
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volatile struct zsdevice *sc_zs; /* chip registers */
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struct evcnt sc_intrcnt;
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struct zs_chanstate sc_cs[2]; /* chan A/B software state */
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};
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/* Definition of the driver for autoconfig. */
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@ -118,7 +119,7 @@ static int zsmatch __P((struct device *, void *, void *));
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static void zsattach __P((struct device *, struct device *, void *));
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struct cfattach zs_ca = {
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sizeof(struct zsinfo), zsmatch, zsattach
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sizeof(struct zs_softc), zsmatch, zsattach
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};
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struct cfdriver zs_cd = {
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@ -152,7 +153,8 @@ static struct tty *zs_ctty; /* console `struct tty *' */
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static int zs_consin = -1, zs_consout = -1;
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static void zscnputc __P((int)); /* console putc function */
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static volatile struct zschan *zs_conschan;
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static struct tty *zs_checkcons __P((struct zsinfo *, int, struct zs_chanstate *));
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static struct tty *zs_checkcons __P((struct zs_softc *, int,
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struct zs_chanstate *));
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#ifdef KGDB
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/* KGDB stuff. Must reboot to change zs_kgdbunit. */
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@ -171,7 +173,6 @@ static int zssint __P((struct zs_chanstate *, volatile struct zschan *));
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void zsabort __P((void));
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static void zsoverrun __P((int, long *, char *));
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#include "zs.h" /* XXX: */
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static volatile struct zsdevice *zsaddr[NZS]; /* XXX, but saves work */
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/*
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@ -255,7 +256,7 @@ zsattach(parent, dev, aux)
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void *aux;
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{
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register int zs = dev->dv_unit, unit;
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register struct zsinfo *zi;
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register struct zs_softc *sc;
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register struct zs_chanstate *cs;
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register volatile struct zsdevice *addr;
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register struct tty *tp, *ctp;
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@ -266,7 +267,7 @@ zsattach(parent, dev, aux)
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int ringsize;
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if ((addr = zsaddr[zs]) == NULL)
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addr = zsaddr[zs] = findzs(zs);
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addr = zsaddr[zs] = (volatile struct zsdevice *)findzs(zs);
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if (ca->ca_bustype==BUS_MAIN)
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if ((void *)addr != ra->ra_vaddr)
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panic("zsattach");
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@ -283,25 +284,33 @@ zsattach(parent, dev, aux)
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intr_establish(PIL_TTY, &levelsoft);
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} else if (pri != prevpri)
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panic("broken zs interrupt scheme");
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zi = (struct zsinfo *)dev;
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zi->zi_zs = addr;
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sc = (struct zs_softc *)dev;
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evcnt_attach(&sc->sc_dev, "intr", &sc->sc_intrcnt);
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sc->sc_zs = addr;
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unit = zs * 2;
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cs = zi->zi_cs;
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cs = sc->sc_cs;
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cs->cs_ttyp = tp = ttymalloc();
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/* link into interrupt list with order (A,B) (B=A+1) */
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cs[0].cs_next = &cs[1];
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cs[0].cs_sc = sc;
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cs[1].cs_next = zslist;
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cs[1].cs_sc = sc;
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zslist = cs;
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cs->cs_unit = unit;
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cs->cs_speed = zs_getspeed(&addr->zs_chan[ZS_CHAN_A]);
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cs->cs_zc = &addr->zs_chan[ZS_CHAN_A];
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tp->t_dev = makedev(ZSMAJOR, unit);
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if ((ctp = zs_checkcons(cs, unit, cs)) != NULL)
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cs->cs_ttyp = tp = ctp;
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else {
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tp = ttymalloc();
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tp->t_dev = makedev(ZSMAJOR, unit);
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tp->t_oproc = zsstart;
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tp->t_param = zsparam;
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if ((ctp = zs_checkcons(zi, unit, cs)) != NULL)
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cs->cs_ttyp = tp = ctp;
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}
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cs->cs_ttyp = tp;
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#ifdef KGDB
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if (ctp == NULL)
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zs_checkkgdb(unit, cs, tp);
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@ -315,23 +324,27 @@ zsattach(parent, dev, aux)
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kbd_serial(tp, zsiopen, zsiclose);
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cs->cs_conk = 1; /* do L1-A processing */
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ringsize = 128;
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} else
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} else {
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if (tp != ctp)
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tty_attach(tp);
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ringsize = 4096;
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}
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cs->cs_ringmask = ringsize - 1;
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cs->cs_rbuf = malloc((u_long)ringsize * sizeof(*cs->cs_rbuf),
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M_DEVBUF, M_NOWAIT);
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unit++;
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cs++;
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cs->cs_ttyp = tp = ttymalloc();
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cs->cs_unit = unit;
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cs->cs_speed = zs_getspeed(&addr->zs_chan[ZS_CHAN_B]);
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cs->cs_zc = &addr->zs_chan[ZS_CHAN_B];
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if ((ctp = zs_checkcons(sc, unit, cs)) != NULL)
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tp = ctp;
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else {
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tp = ttymalloc();
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tp->t_dev = makedev(ZSMAJOR, unit);
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tp->t_oproc = zsstart;
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tp->t_param = zsparam;
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if ((ctp = zs_checkcons(zi, unit, cs)) != NULL)
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cs->cs_ttyp = tp = ctp;
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}
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cs->cs_ttyp = tp;
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#ifdef KGDB
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if (ctp == NULL)
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zs_checkkgdb(unit, cs, tp);
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@ -340,12 +353,15 @@ zsattach(parent, dev, aux)
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/*
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* Mouse: tell /dev/mouse driver how to talk to us.
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*/
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tp->t_ispeed = tp->t_ospeed = cs->cs_speed;
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tp->t_ispeed = tp->t_ospeed = B1200;
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tp->t_cflag = CS8;
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ms_serial(tp, zsiopen, zsiclose);
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ringsize = 128;
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} else
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} else {
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if (tp != ctp)
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tty_attach(tp);
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ringsize = 4096;
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}
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cs->cs_ringmask = ringsize - 1;
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cs->cs_rbuf = malloc((u_long)ringsize * sizeof(*cs->cs_rbuf),
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M_DEVBUF, M_NOWAIT);
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@ -414,7 +430,7 @@ zsconsole(tp, unit, out, fnstop)
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zs_consout = unit;
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zs = unit >> 1;
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if ((addr = zsaddr[zs]) == NULL)
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addr = zsaddr[zs] = findzs(zs);
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addr = zsaddr[zs] = (volatile struct zsdevice *)findzs(zs);
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zs_conschan = (unit & 1) == 0 ? &addr->zs_chan[ZS_CHAN_A] :
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&addr->zs_chan[ZS_CHAN_B];
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v_putc = zscnputc;
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@ -456,8 +472,8 @@ zscnputc(c)
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* needed. Return console tty if it is to receive console input.
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*/
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static struct tty *
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zs_checkcons(zi, unit, cs)
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struct zsinfo *zi;
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zs_checkcons(sc, unit, cs)
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struct zs_softc *sc;
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int unit;
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struct zs_chanstate *cs;
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{
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@ -492,7 +508,7 @@ zs_checkcons(zi, unit, cs)
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tp->t_oproc = zsstart;
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}
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printf("%s%c: console %s\n",
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zi->zi_dev.dv_xname, (unit & 1) + 'a', i ? (o ? "i/o" : i) : o);
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sc->sc_dev.dv_xname, (unit & 1) + 'a', i ? (o ? "i/o" : i) : o);
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cs->cs_consio = 1;
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cs->cs_brkabort = 1;
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return (tp);
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@ -577,13 +593,13 @@ zsopen(dev, flags, mode, p)
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{
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register struct tty *tp;
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register struct zs_chanstate *cs;
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struct zsinfo *zi;
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struct zs_softc *sc;
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int unit = minor(dev), zs = unit >> 1, error, s;
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if (zs >= zs_cd.cd_ndevs || (zi = zs_cd.cd_devs[zs]) == NULL ||
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if (zs >= zs_cd.cd_ndevs || (sc = zs_cd.cd_devs[zs]) == NULL ||
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unit == ZS_KBD || unit == ZS_MOUSE)
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return (ENXIO);
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cs = &zi->zi_cs[unit & 1];
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cs = &sc->sc_cs[unit & 1];
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if (cs->cs_consio)
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return (ENXIO); /* ??? */
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tp = cs->cs_ttyp;
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@ -650,11 +666,11 @@ zsclose(dev, flags, mode, p)
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{
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register struct zs_chanstate *cs;
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register struct tty *tp;
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struct zsinfo *zi;
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struct zs_softc *sc;
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int unit = minor(dev), s;
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zi = zs_cd.cd_devs[unit >> 1];
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cs = &zi->zi_cs[unit & 1];
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sc = zs_cd.cd_devs[unit >> 1];
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cs = &sc->sc_cs[unit & 1];
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tp = cs->cs_ttyp;
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linesw[tp->t_line].l_close(tp, flags);
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if (tp->t_cflag & HUPCL || tp->t_state & TS_WOPEN ||
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@ -692,12 +708,12 @@ zsread(dev, uio, flags)
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int flags;
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{
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register struct zs_chanstate *cs;
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register struct zsinfo *zi;
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register struct zs_softc *sc;
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register struct tty *tp;
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int unit = minor(dev);
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zi = zs_cd.cd_devs[unit >> 1];
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cs = &zi->zi_cs[unit & 1];
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sc = zs_cd.cd_devs[unit >> 1];
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cs = &sc->sc_cs[unit & 1];
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tp = cs->cs_ttyp;
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return (linesw[tp->t_line].l_read(tp, uio, flags));
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@ -711,12 +727,12 @@ zswrite(dev, uio, flags)
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int flags;
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{
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register struct zs_chanstate *cs;
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register struct zsinfo *zi;
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register struct zs_softc *sc;
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register struct tty *tp;
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int unit = minor(dev);
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zi = zs_cd.cd_devs[unit >> 1];
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cs = &zi->zi_cs[unit & 1];
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sc = zs_cd.cd_devs[unit >> 1];
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cs = &sc->sc_cs[unit & 1];
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tp = cs->cs_ttyp;
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return (linesw[tp->t_line].l_write(tp, uio, flags));
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@ -727,16 +743,19 @@ zstty(dev)
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dev_t dev;
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{
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register struct zs_chanstate *cs;
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register struct zsinfo *zi;
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register struct zs_softc *sc;
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int unit = minor(dev);
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zi = zs_cd.cd_devs[unit >> 1];
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cs = &zi->zi_cs[unit & 1];
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sc = zs_cd.cd_devs[unit >> 1];
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cs = &sc->sc_cs[unit & 1];
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return (cs->cs_ttyp);
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}
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static int zsrint __P((struct zs_chanstate *, volatile struct zschan *));
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static int zsxint __P((struct zs_chanstate *, volatile struct zschan *));
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static int zssint __P((struct zs_chanstate *, volatile struct zschan *));
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/*
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* ZS hardware interrupt. Scan all ZS channels. NB: we know here that
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* channels are kept in (A,B) pairs.
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@ -757,53 +776,58 @@ zshard(intrarg)
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#define b (a + 1)
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register volatile struct zschan *zc;
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register int rr3, intflags = 0, v, i, ringmask;
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static int zsrint(struct zs_chanstate *, volatile struct zschan *);
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static int zsxint(struct zs_chanstate *, volatile struct zschan *);
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static int zssint(struct zs_chanstate *, volatile struct zschan *);
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#define ZSHARD_NEED_SOFTINTR 1
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#define ZSHARD_WAS_SERVICED 2
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#define ZSHARD_CHIP_GOTINTR 4
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for (a = zslist; a != NULL; a = b->cs_next) {
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ringmask = a->cs_ringmask;
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rr3 = ZS_READ(a->cs_zc, 3);
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if (rr3 & (ZSRR3_IP_A_RX|ZSRR3_IP_A_TX|ZSRR3_IP_A_STAT)) {
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intflags |= 2;
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intflags |= (ZSHARD_CHIP_GOTINTR|ZSHARD_WAS_SERVICED);
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zc = a->cs_zc;
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i = a->cs_rbput;
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if (rr3 & ZSRR3_IP_A_RX && (v = zsrint(a, zc)) != 0) {
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a->cs_rbuf[i++ & ringmask] = v;
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intflags |= 1;
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intflags |= ZSHARD_NEED_SOFTINTR;
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}
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if (rr3 & ZSRR3_IP_A_TX && (v = zsxint(a, zc)) != 0) {
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a->cs_rbuf[i++ & ringmask] = v;
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intflags |= 1;
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intflags |= ZSHARD_NEED_SOFTINTR;
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}
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if (rr3 & ZSRR3_IP_A_STAT && (v = zssint(a, zc)) != 0) {
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a->cs_rbuf[i++ & ringmask] = v;
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intflags |= 1;
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intflags |= ZSHARD_NEED_SOFTINTR;
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}
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a->cs_rbput = i;
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}
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if (rr3 & (ZSRR3_IP_B_RX|ZSRR3_IP_B_TX|ZSRR3_IP_B_STAT)) {
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intflags |= 2;
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intflags |= (ZSHARD_CHIP_GOTINTR|ZSHARD_WAS_SERVICED);
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zc = b->cs_zc;
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i = b->cs_rbput;
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if (rr3 & ZSRR3_IP_B_RX && (v = zsrint(b, zc)) != 0) {
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b->cs_rbuf[i++ & ringmask] = v;
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intflags |= 1;
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intflags |= ZSHARD_NEED_SOFTINTR;
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}
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if (rr3 & ZSRR3_IP_B_TX && (v = zsxint(b, zc)) != 0) {
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b->cs_rbuf[i++ & ringmask] = v;
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intflags |= 1;
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intflags |= ZSHARD_NEED_SOFTINTR;
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}
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if (rr3 & ZSRR3_IP_B_STAT && (v = zssint(b, zc)) != 0) {
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b->cs_rbuf[i++ & ringmask] = v;
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intflags |= 1;
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intflags |= ZSHARD_NEED_SOFTINTR;
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}
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b->cs_rbput = i;
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}
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if (intflags & ZSHARD_CHIP_GOTINTR) {
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a->cs_sc->sc_intrcnt.ev_count++;
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intflags &= ~ZSHARD_CHIP_GOTINTR;
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}
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}
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#undef b
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if (intflags & 1) {
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if (intflags & ZSHARD_NEED_SOFTINTR) {
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if (CPU_ISSUN4COR4M) {
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/* XXX -- but this will go away when zshard moves to locore.s */
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struct clockframe *p = intrarg;
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@ -819,14 +843,12 @@ zshard(intrarg)
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}
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}
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#if defined(SUN4M)
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if (CPU_ISSUN4M)
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raise(0, PIL_TTY);
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else
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#endif
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ienab_bis(IE_ZSSOFT);
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}
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return (intflags & 2);
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return (intflags & ZSHARD_WAS_SERVICED);
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}
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static int
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@ -834,7 +856,7 @@ zsrint(cs, zc)
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register struct zs_chanstate *cs;
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register volatile struct zschan *zc;
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{
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register int c = zc->zc_data;
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register u_int c = zc->zc_data;
|
||||
|
||||
ZS_DELAY();
|
||||
if (cs->cs_conk) {
|
||||
|
|
@ -914,7 +936,7 @@ zssint(cs, zc)
|
|||
register struct zs_chanstate *cs;
|
||||
register volatile struct zschan *zc;
|
||||
{
|
||||
register int rr0;
|
||||
register u_int rr0;
|
||||
|
||||
rr0 = zc->zc_csr;
|
||||
ZS_DELAY();
|
||||
|
|
@ -1137,8 +1159,8 @@ zsioctl(dev, cmd, data, flag, p)
|
|||
struct proc *p;
|
||||
{
|
||||
int unit = minor(dev);
|
||||
struct zsinfo *zi = zs_cd.cd_devs[unit >> 1];
|
||||
register struct zs_chanstate *cs = &zi->zi_cs[unit & 1];
|
||||
struct zs_softc *sc = zs_cd.cd_devs[unit >> 1];
|
||||
register struct zs_chanstate *cs = &sc->sc_cs[unit & 1];
|
||||
register struct tty *tp = cs->cs_ttyp;
|
||||
register int error, s;
|
||||
|
||||
|
|
@ -1235,9 +1257,9 @@ zsioctl(dev, cmd, data, flag, p)
|
|||
zs_modem(cs, 0);
|
||||
break;
|
||||
case TIOCMSET:
|
||||
case TIOCMGET:
|
||||
case TIOCMBIS:
|
||||
case TIOCMBIC:
|
||||
case TIOCMGET:
|
||||
default:
|
||||
return (ENOTTY);
|
||||
}
|
||||
|
|
@ -1254,9 +1276,9 @@ zsstart(tp)
|
|||
register struct zs_chanstate *cs;
|
||||
register int s, nch;
|
||||
int unit = minor(tp->t_dev);
|
||||
struct zsinfo *zi = zs_cd.cd_devs[unit >> 1];
|
||||
struct zs_softc *sc = zs_cd.cd_devs[unit >> 1];
|
||||
|
||||
cs = &zi->zi_cs[unit & 1];
|
||||
cs = &sc->sc_cs[unit & 1];
|
||||
s = spltty();
|
||||
|
||||
/*
|
||||
|
|
@ -1315,9 +1337,9 @@ zsstop(tp, flag)
|
|||
{
|
||||
register struct zs_chanstate *cs;
|
||||
register int s, unit = minor(tp->t_dev);
|
||||
struct zsinfo *zi = zs_cd.cd_devs[unit >> 1];
|
||||
struct zs_softc *sc = zs_cd.cd_devs[unit >> 1];
|
||||
|
||||
cs = &zi->zi_cs[unit & 1];
|
||||
cs = &sc->sc_cs[unit & 1];
|
||||
s = splzs();
|
||||
if (tp->t_state & TS_BUSY) {
|
||||
/*
|
||||
|
|
@ -1328,7 +1350,6 @@ zsstop(tp, flag)
|
|||
tp->t_state |= TS_FLUSH;
|
||||
}
|
||||
splx(s);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -1343,8 +1364,8 @@ zsparam(tp, t)
|
|||
register struct termios *t;
|
||||
{
|
||||
int unit = minor(tp->t_dev);
|
||||
struct zsinfo *zi = zs_cd.cd_devs[unit >> 1];
|
||||
register struct zs_chanstate *cs = &zi->zi_cs[unit & 1];
|
||||
struct zs_softc *sc = zs_cd.cd_devs[unit >> 1];
|
||||
register struct zs_chanstate *cs = &sc->sc_cs[unit & 1];
|
||||
register int tmp, tmp5, cflag, s;
|
||||
|
||||
/*
|
||||
|
|
@ -1518,10 +1539,13 @@ zs_kgdb_getc(arg)
|
|||
void *arg;
|
||||
{
|
||||
register volatile struct zschan *zc = (volatile struct zschan *)arg;
|
||||
u_char c;
|
||||
|
||||
while ((zc->zc_csr & ZSRR0_RX_READY) == 0)
|
||||
ZS_DELAY();
|
||||
return (zc->zc_data);
|
||||
c = zc->zc_data;
|
||||
ZS_DELAY();
|
||||
return c;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -1563,7 +1587,7 @@ zs_kgdb_init()
|
|||
}
|
||||
zs = unit >> 1;
|
||||
if ((addr = zsaddr[zs]) == NULL)
|
||||
addr = zsaddr[zs] = findzs(zs);
|
||||
addr = zsaddr[zs] = (volatile struct zsdevice *)findzs(zs);
|
||||
unit &= 1;
|
||||
zc = unit == 0 ? &addr->zs_chan[ZS_CHAN_A] : &addr->zs_chan[ZS_CHAN_B];
|
||||
zs_kgdb_savedspeed = zs_getspeed(zc);
|
||||
|
|
|
|||
Loading…
Reference in New Issue