struct proc * -> struct lwp *
ixp425_com: add some status flags
This commit is contained in:
ichiro
parent
2edcbf6bb2
commit
4eee2aed2e
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@ -1,4 +1,4 @@
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/* $NetBSD: vm_machdep_arm.c,v 1.5 2003/01/17 22:28:49 thorpej Exp $ */
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/* $NetBSD: vm_machdep_arm.c,v 1.6 2003/06/29 10:51:29 ichiro Exp $ */
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/*
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* Copyright (c) 1994-1998 Mark Brinicombe.
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@ -37,7 +37,7 @@
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#include <sys/param.h>
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__KERNEL_RCSID(0, "$NetBSD: vm_machdep_arm.c,v 1.5 2003/01/17 22:28:49 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: vm_machdep_arm.c,v 1.6 2003/06/29 10:51:29 ichiro Exp $");
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#include <sys/core.h>
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#include <sys/exec.h>
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@ -58,7 +58,6 @@ int
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cpu_coredump(struct lwp *l, struct vnode *vp, struct ucred *cred,
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struct core *chdr)
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{
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struct proc *p = l->l_proc;
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int error;
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struct {
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struct reg regs;
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@ -86,13 +85,13 @@ cpu_coredump(struct lwp *l, struct vnode *vp, struct ucred *cred,
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error = vn_rdwr(UIO_WRITE, vp, (caddr_t)&cseg, chdr->c_seghdrsize,
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(off_t)chdr->c_hdrsize, UIO_SYSSPACE,
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IO_NODELOCKED|IO_UNIT, cred, NULL, p);
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IO_NODELOCKED|IO_UNIT, cred, NULL, l);
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if (error)
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return error;
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error = vn_rdwr(UIO_WRITE, vp, (caddr_t)&cpustate, sizeof(cpustate),
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(off_t)(chdr->c_hdrsize + chdr->c_seghdrsize), UIO_SYSSPACE,
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IO_NODELOCKED|IO_UNIT, cred, NULL, p);
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IO_NODELOCKED|IO_UNIT, cred, NULL, l);
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if (error)
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return error;
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@ -1,4 +1,4 @@
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/* $NetBSD: arm32_machdep.c,v 1.34 2003/06/04 13:30:05 simonb Exp $ */
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/* $NetBSD: arm32_machdep.c,v 1.35 2003/06/29 10:51:30 ichiro Exp $ */
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/*
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* Copyright (c) 1994-1998 Mark Brinicombe.
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@ -349,14 +349,14 @@ cpu_startup()
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*/
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int
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cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
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cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, l)
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int *name;
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u_int namelen;
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void *oldp;
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size_t *oldlenp;
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void *newp;
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size_t newlen;
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struct proc *p;
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struct lwp *l;
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{
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/* all sysctl names at this level are terminal */
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if (namelen != 1)
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@ -1,4 +1,4 @@
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/* $NetBSD: ixp425_com.c,v 1.8 2003/06/03 14:13:30 ichiro Exp $ */
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/* $NetBSD: ixp425_com.c,v 1.9 2003/06/29 10:51:31 ichiro Exp $ */
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/*
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* Copyright (c) 2003
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* Ichiro FUKUHARA <ichiro@ichiro.org>.
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@ -68,7 +68,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ixp425_com.c,v 1.8 2003/06/03 14:13:30 ichiro Exp $");
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__KERNEL_RCSID(0, "$NetBSD: ixp425_com.c,v 1.9 2003/06/29 10:51:31 ichiro Exp $");
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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@ -111,13 +111,15 @@ static void tiocm_to_ixp4xx_com(struct ixp4xx_com_softc *, u_long, int);
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static int ixp4xx_com_to_tiocm(struct ixp4xx_com_softc *);
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static void ixp4xx_com_set_cr(struct ixp4xx_com_softc *);
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static void ixpcom_hwiflow(struct ixp4xx_com_softc *);
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static void ixp4xxcomsoft(void *);
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static void ixpcomdiag(void *);
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inline static void ixp4xx_com_txsoft(struct ixp4xx_com_softc *, struct tty *);
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inline static void ixp4xx_com_rxsoft(struct ixp4xx_com_softc *, struct tty *);
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inline static void ixpcom_schedrx(struct ixp4xx_com_softc *);
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int ixp4xx_cominit(bus_space_tag_t, bus_space_handle_t, int, int, tcflag_t);
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int ixp4xx_comcngetc(dev_t);
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void ixp4xx_comcnputc(dev_t, int);
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void ixp4xx_comcnpollc(dev_t, int);
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@ -155,6 +157,10 @@ const struct cdevsw ixpcom_cdevsw = {
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nommap, ttykqfilter, D_TTY
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};
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/* Stop input when 3/4 of the ring is full; restart when only 1/4 is full. */
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u_int ixpcom_rbuf_hiwat = (IXPCOM_RING_SIZE * 1) / 4;
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u_int ixpcom_rbuf_lowat = (IXPCOM_RING_SIZE * 3) / 4;
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#define COMUNIT_MASK 0x7ffff
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#define COMDIALOUT_MASK 0x80000
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@ -164,8 +170,6 @@ const struct cdevsw ixpcom_cdevsw = {
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#define COM_ISALIVE(sc) ((sc)->enabled != 0 && \
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ISSET((sc)->sc_dev.dv_flags, DVF_ACTIVE))
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#define COM_BARRIER(t, h, f) bus_space_barrier((t), (h), 0, COM_NPORTS, (f))
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#define COM_LOCK(sc);
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#define COM_UNLOCK(sc);
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@ -230,9 +234,8 @@ ixp4xx_com_attach_subr(struct ixp4xx_com_softc *sc)
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ixp4xx_com_sc = sc;
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#if 0
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callout_init(&sc->sc_diag_callout);
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#endif
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/* configuring the device. */
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sc->sc_frequency = FREQ;
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sc->sc_dlbl = ixp4xx_comspeed(CONSPEED, sc->sc_frequency);
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@ -242,7 +245,7 @@ ixp4xx_com_attach_subr(struct ixp4xx_com_softc *sc)
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sc->sc_ier = IER_UUE;
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bus_space_write_4(iot, ioh, IXP425_UART_IER, sc->sc_ier);
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sc->sc_fcr = FCR_TRIGGER_8 | FCR_RESETTF | FCR_RESETRF | FCR_ENABLE;
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sc->sc_fcr = FCR_TRIGGER_32 | FCR_RESETTF | FCR_RESETRF | FCR_ENABLE;
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bus_space_write_4(iot, ioh, IXP425_UART_FCR, sc->sc_fcr);
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if (iot == ixp4xx_comcn_sc.sc_iot
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@ -282,6 +285,10 @@ ixp4xx_com_attach_subr(struct ixp4xx_com_softc *sc)
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tty_attach(tp);
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sc->sc_mcr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_MCR);
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SET(sc->sc_mcr, MCR_IENABLE);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_MCR, sc->sc_mcr);
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if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE)) {
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int maj;
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@ -425,6 +432,23 @@ ixp4xx_comparam(struct tty *tp, struct termios *t)
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ixp4xx_com_set_cr(sc);
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}
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if (!ISSET(t->c_cflag, CHWFLOW)) {
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/* Disable the high water mark. */
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sc->sc_r_hiwat = 0;
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sc->sc_r_lowat = 0;
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if (ISSET(sc->sc_rx_flags, RX_TTY_OVERFLOWED)) {
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CLR(sc->sc_rx_flags, RX_TTY_OVERFLOWED);
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ixpcom_schedrx(sc);
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}
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if (ISSET(sc->sc_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED)) {
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CLR(sc->sc_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED);
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ixpcom_hwiflow(sc);
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}
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} else {
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sc->sc_r_hiwat = ixpcom_rbuf_hiwat;
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sc->sc_r_lowat = ixpcom_rbuf_lowat;
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}
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COM_UNLOCK(sc);
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splx(s);
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@ -432,7 +456,7 @@ ixp4xx_comparam(struct tty *tp, struct termios *t)
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* Update the tty layer's idea of the carrier bit.
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* We tell tty the carrier is always on.
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*/
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(void) (*tp->t_linesw->l_modem)(tp, 1);
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(void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, MSR_DCD));
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#ifdef COM_DEBUG
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if (com_debug)
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@ -457,6 +481,8 @@ ixp4xx_com_set_cr(struct ixp4xx_com_softc *sc)
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ixp4xx_com_iflush(sc);
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bus_space_write_4(iot, ioh, IXP425_UART_IER, IER_UUE);
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bus_space_write_4(iot, ioh, IXP425_UART_LCR, sc->sc_lcr | LCR_DLAB);
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bus_space_write_4(iot, ioh, IXP425_UART_DLL, sc->sc_dlbl);
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bus_space_write_4(iot, ioh, IXP425_UART_DLH, sc->sc_dlbh);
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@ -469,7 +495,60 @@ ixp4xx_com_set_cr(struct ixp4xx_com_softc *sc)
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static int
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ixp4xx_comhwiflow(struct tty *tp, int block)
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{
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return (0);
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struct ixp4xx_com_softc *sc
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= device_lookup(&ixpcom_cd, COMUNIT(tp->t_dev));
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int s;
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if (COM_ISALIVE(sc) == 0)
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return (0);
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if (sc->sc_mcr_rts == 0)
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return (0);
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s = splserial();
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COM_LOCK(sc);
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if (block) {
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if (!ISSET(sc->sc_rx_flags, RX_TTY_BLOCKED)) {
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SET(sc->sc_rx_flags, RX_TTY_BLOCKED);
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ixpcom_hwiflow(sc);
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}
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} else {
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if (ISSET(sc->sc_rx_flags, RX_TTY_OVERFLOWED)) {
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CLR(sc->sc_rx_flags, RX_TTY_OVERFLOWED);
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ixpcom_schedrx(sc);
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}
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if (ISSET(sc->sc_rx_flags, RX_TTY_BLOCKED)) {
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CLR(sc->sc_rx_flags, RX_TTY_BLOCKED);
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ixpcom_hwiflow(sc);
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}
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}
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COM_UNLOCK(sc);
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splx(s);
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return (1);
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}
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/*
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* (un)block input via hw flowcontrol
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*/
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void
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ixpcom_hwiflow(struct ixp4xx_com_softc *sc)
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{
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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if (sc->sc_mcr_rts == 0)
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return;
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if (ISSET(sc->sc_rx_flags, RX_ANY_BLOCK)) {
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CLR(sc->sc_mcr, sc->sc_mcr_rts);
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CLR(sc->sc_mcr_active, sc->sc_mcr_rts);
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} else {
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SET(sc->sc_mcr, sc->sc_mcr_rts);
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SET(sc->sc_mcr_active, sc->sc_mcr_rts);
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}
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bus_space_write_4(iot, ioh, IXP425_UART_MCR, sc->sc_mcr_active);
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}
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static void
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@ -488,8 +567,10 @@ ixp4xx_com_filltx(struct ixp4xx_com_softc *sc)
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n++;
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}
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sc->sc_tbc -= n;
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sc->sc_tba += n;
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}
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static void
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ixp4xx_comstart(struct tty *tp)
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{
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@ -538,7 +619,7 @@ ixp4xx_comstart(struct tty *tp)
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if (!ISSET(sc->sc_ier, IER_TIE)) {
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SET(sc->sc_ier, IER_TIE);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_IER,
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sc->sc_ier | IER_UUE);
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sc->sc_ier);
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}
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/* Output the first chunk of the contiguous buffer. */
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@ -550,6 +631,15 @@ out:
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return;
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}
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inline static void
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ixpcom_schedrx(struct ixp4xx_com_softc *sc)
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{
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sc->sc_rx_ready = 1;
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/* Wake up the poller. */
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softintr_schedule(sc->sc_si);
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}
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static void
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ixp4xx_com_break(struct ixp4xx_com_softc *sc, int onoff)
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{
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@ -597,9 +687,18 @@ ixp4xx_com_shutdown(struct ixp4xx_com_softc *sc)
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}
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/* Turn off interrupts. */
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#if 1
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if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE)) {
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sc->sc_ier = IER_RAVIE | IER_RTOIE;
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} else
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sc->sc_ier = IER_UUE;
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_IER,
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sc->sc_ier);
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#else
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sc->sc_ier &= ~(IER_RAVIE | IER_TIE);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_IER,
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sc->sc_ier | IER_UUE);
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#endif
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if (sc->disable) {
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#ifdef DIAGNOSTIC
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@ -614,7 +713,7 @@ ixp4xx_com_shutdown(struct ixp4xx_com_softc *sc)
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}
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int
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ixp4xx_comopen(dev_t dev, int flag, int mode, struct proc *p)
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ixp4xx_comopen(dev_t dev, int flag, int mode, struct lwp *l)
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{
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struct ixp4xx_com_softc *sc;
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struct tty *tp;
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@ -641,7 +740,7 @@ ixp4xx_comopen(dev_t dev, int flag, int mode, struct proc *p)
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if (ISSET(tp->t_state, TS_ISOPEN) &&
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ISSET(tp->t_state, TS_XCLUDE) &&
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p->p_ucred->cr_uid != 0)
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l->l_proc->p_ucred->cr_uid != 0)
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return (EBUSY);
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s = spltty();
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@ -669,15 +768,12 @@ ixp4xx_comopen(dev_t dev, int flag, int mode, struct proc *p)
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sc->enabled = 1;
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}
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/* Turn on interrupts. */
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sc->sc_mcr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_MCR);
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SET(sc->sc_mcr, MCR_IENABLE);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_MCR, sc->sc_mcr);
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SET(sc->sc_ier, IER_RAVIE | IER_TIE);
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SET(sc->sc_ier, IER_RAVIE | IER_RTOIE | IER_RLSE | IER_RIE);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_IER, sc->sc_ier);
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#if 0
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/* Fetch the current modem control status, needed later. */
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sc->sc_msr = bus_space_read_4(iot, ioh, IXP425_UART_MSR);
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#endif
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sc->sc_msr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IXP425_UART_MSR);
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COM_UNLOCK(sc);
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splx(s2);
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@ -724,6 +820,7 @@ ixp4xx_comopen(dev_t dev, int flag, int mode, struct proc *p)
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sc->sc_rbavail = IXPCOM_RING_SIZE;
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ixp4xx_com_iflush(sc);
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CLR(sc->sc_rx_flags, RX_ANY_BLOCK);
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ixpcom_hwiflow(sc);
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#ifdef COM_DEBUG
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if (com_debug)
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@ -757,7 +854,7 @@ bad:
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}
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int
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ixp4xx_comclose(dev_t dev, int flag, int mode, struct proc *p)
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ixp4xx_comclose(dev_t dev, int flag, int mode, struct lwp *l)
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{
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struct ixp4xx_com_softc *sc =
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device_lookup(&ixpcom_cd, COMUNIT(dev));
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@ -812,7 +909,7 @@ ixp4xx_comwrite(dev_t dev, struct uio *uio, int flag)
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}
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int
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ixp4xx_compoll(dev_t dev, int events, struct proc *p)
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ixp4xx_compoll(dev_t dev, int events, struct lwp *l)
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{
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struct ixp4xx_com_softc *sc =
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device_lookup(&ixpcom_cd, COMUNIT(dev));
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@ -821,7 +918,7 @@ ixp4xx_compoll(dev_t dev, int events, struct proc *p)
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if (COM_ISALIVE(sc) == 0)
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return (EIO);
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return ((*tp->t_linesw->l_poll)(tp, events, p));
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return ((*tp->t_linesw->l_poll)(tp, events, l));
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}
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struct tty *
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@ -835,7 +932,7 @@ ixp4xx_comtty(dev_t dev)
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}
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int
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ixp4xx_comioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
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ixp4xx_comioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l)
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{
|
||||
struct ixp4xx_com_softc *sc =
|
||||
device_lookup(&ixpcom_cd, COMUNIT(dev));
|
||||
|
|
@ -846,11 +943,11 @@ ixp4xx_comioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
|
|||
if (COM_ISALIVE(sc) == 0)
|
||||
return (EIO);
|
||||
|
||||
error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, p);
|
||||
error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l);
|
||||
if (error != EPASSTHROUGH)
|
||||
return (error);
|
||||
|
||||
error = ttioctl(tp, cmd, data, flag, p);
|
||||
error = ttioctl(tp, cmd, data, flag, l);
|
||||
if (error != EPASSTHROUGH)
|
||||
return (error);
|
||||
|
||||
|
|
@ -881,7 +978,7 @@ ixp4xx_comioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
|
|||
break;
|
||||
|
||||
case TIOCSFLAGS:
|
||||
error = suser(p->p_ucred, &p->p_acflag);
|
||||
error = suser(l->l_proc->p_ucred, &l->l_proc->p_acflag);
|
||||
if (error)
|
||||
break;
|
||||
sc->sc_swflags = *(int *)data;
|
||||
|
|
@ -1017,7 +1114,7 @@ ixp4xx_com_to_tiocm(struct ixp4xx_com_softc *sc)
|
|||
if (ISSET(combits, MSR_RI | MSR_TERI))
|
||||
SET(ttybits, TIOCM_RI);
|
||||
|
||||
if ((sc->sc_ier & IER_UUE) != 0)
|
||||
if ((sc->sc_ier & 0x0f) != 0)
|
||||
SET(ttybits, TIOCM_LE);
|
||||
|
||||
return (ttybits);
|
||||
|
|
@ -1112,6 +1209,29 @@ ixp4xx_com_txsoft(struct ixp4xx_com_softc *sc, struct tty *tp)
|
|||
(*tp->t_linesw->l_start)(tp);
|
||||
}
|
||||
|
||||
void
|
||||
ixpcomdiag(void *arg)
|
||||
{
|
||||
struct ixp4xx_com_softc *sc = arg;
|
||||
int overflows, floods;
|
||||
int s;
|
||||
|
||||
s = splserial();
|
||||
COM_LOCK(sc);
|
||||
overflows = sc->sc_overflows;
|
||||
sc->sc_overflows = 0;
|
||||
floods = sc->sc_floods;
|
||||
sc->sc_floods = 0;
|
||||
sc->sc_errors = 0;
|
||||
COM_UNLOCK(sc);
|
||||
splx(s);
|
||||
|
||||
printf("%s: %d silo overflow%s, %d ibuf flood%s\n",
|
||||
sc->sc_dev.dv_xname,
|
||||
overflows, overflows == 1 ? "" : "s",
|
||||
floods, floods == 1 ? "" : "s");
|
||||
}
|
||||
|
||||
inline static void
|
||||
ixp4xx_com_rxsoft(struct ixp4xx_com_softc *sc, struct tty *tp)
|
||||
{
|
||||
|
|
@ -1128,8 +1248,14 @@ ixp4xx_com_rxsoft(struct ixp4xx_com_softc *sc, struct tty *tp)
|
|||
while (cc) {
|
||||
code = get[0];
|
||||
lsr = get[1];
|
||||
if (ISSET(lsr, LSR_OE | LSR_FE | LSR_PE)) {
|
||||
if (ISSET(lsr, LSR_FE))
|
||||
if (ISSET(lsr, LSR_OE | LSR_FE | LSR_PE | LSR_BI)) {
|
||||
if (ISSET(lsr, LSR_OE)) {
|
||||
sc->sc_overflows++;
|
||||
if (sc->sc_errors++ == 0)
|
||||
callout_reset(&sc->sc_diag_callout,
|
||||
60 * hz, ixpcomdiag, sc);
|
||||
}
|
||||
if (ISSET(lsr, LSR_BI | LSR_FE))
|
||||
SET(code, TTY_FE);
|
||||
if (ISSET(lsr, LSR_PE))
|
||||
SET(code, TTY_PE);
|
||||
|
|
@ -1178,11 +1304,12 @@ ixp4xx_com_rxsoft(struct ixp4xx_com_softc *sc, struct tty *tp)
|
|||
if (cc >= 1) {
|
||||
if (ISSET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED)) {
|
||||
CLR(sc->sc_rx_flags, RX_IBUF_OVERFLOWED);
|
||||
SET(sc->sc_ier,IER_RAVIE);
|
||||
SET(sc->sc_ier, IER_RAVIE | IER_RTOIE);
|
||||
ixp4xx_com_set_cr(sc);
|
||||
}
|
||||
if (ISSET(sc->sc_rx_flags, RX_IBUF_BLOCKED)) {
|
||||
CLR(sc->sc_rx_flags, RX_IBUF_BLOCKED);
|
||||
ixpcom_hwiflow(sc);
|
||||
}
|
||||
}
|
||||
COM_UNLOCK(sc);
|
||||
|
|
@ -1197,48 +1324,59 @@ ixp4xxcomintr(void* arg)
|
|||
bus_space_tag_t iot = sc->sc_iot;
|
||||
bus_space_handle_t ioh = sc->sc_ioh;
|
||||
u_char *put, *end;
|
||||
u_int cc, res;
|
||||
u_int32_t c;
|
||||
u_int cc;
|
||||
u_char iir, lsr;
|
||||
|
||||
if (COM_ISALIVE(sc) == 0)
|
||||
return (0);
|
||||
|
||||
COM_LOCK(sc);
|
||||
res = bus_space_read_4(iot, ioh, IXP425_UART_IER) & IER_UUE;
|
||||
|
||||
if (!res) {
|
||||
iir = bus_space_read_4(iot, ioh, IXP425_UART_IIR);
|
||||
if (ISSET(iir, IIR_NOPEND)) {
|
||||
COM_UNLOCK(sc);
|
||||
return (0);
|
||||
}
|
||||
|
||||
res = bus_space_read_4(iot, ioh, IXP425_UART_LSR);
|
||||
if (!ISSET(res, LSR_DR | LSR_TDRQ))
|
||||
return (0);
|
||||
|
||||
end = sc->sc_ebuf;
|
||||
put = sc->sc_rbput;
|
||||
cc = sc->sc_rbavail;
|
||||
|
||||
if (ISSET(res, LSR_DR)) {
|
||||
if (!ISSET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED)) {
|
||||
again: do {
|
||||
u_char msr;
|
||||
|
||||
lsr = bus_space_read_4(iot, ioh, IXP425_UART_LSR);
|
||||
if (ISSET(lsr, LSR_BI)) {
|
||||
int cn_trapped = 0;
|
||||
|
||||
cn_check_magic(sc->sc_tty->t_dev,
|
||||
CNC_BREAK, ixp4xx_com_cnm_state);
|
||||
if (cn_trapped)
|
||||
continue;
|
||||
}
|
||||
|
||||
if (ISSET(lsr, LSR_RCV_MASK) &&
|
||||
!ISSET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED)) {
|
||||
while (cc > 0) {
|
||||
if (!ISSET(res, LSR_DR))
|
||||
break;
|
||||
c = bus_space_read_4(iot, ioh, IXP425_UART_DATA);
|
||||
if (ISSET(res, LSR_FE)) {
|
||||
cn_check_magic(sc->sc_tty->t_dev,
|
||||
CNC_BREAK,
|
||||
ixp4xx_com_cnm_state);
|
||||
}
|
||||
put[0] = c & 0xff;
|
||||
put[1] = (c >> 8) & 0xff;
|
||||
int cn_trapped = 0;
|
||||
put[0] = bus_space_read_4(iot, ioh, IXP425_UART_DATA);
|
||||
put[1] = lsr;
|
||||
cn_check_magic(sc->sc_tty->t_dev,
|
||||
put[0], ixp4xx_com_cnm_state);
|
||||
put[0], ixp4xx_com_cnm_state);
|
||||
if (cn_trapped) {
|
||||
lsr = bus_space_read_4(iot, ioh,
|
||||
IXP425_UART_LSR);
|
||||
if (!ISSET(lsr, LSR_RCV_MASK))
|
||||
break;
|
||||
|
||||
continue;
|
||||
}
|
||||
put += 2;
|
||||
if (put >= end)
|
||||
put = sc->sc_rbuf;
|
||||
cc--;
|
||||
res = bus_space_read_4(iot, ioh, IXP425_UART_LSR);
|
||||
lsr = bus_space_read_4(iot, ioh, IXP425_UART_LSR);
|
||||
if (!ISSET(lsr, LSR_RCV_MASK))
|
||||
break;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -1256,7 +1394,12 @@ ixp4xxcomintr(void* arg)
|
|||
* See if we are in danger of overflowing a buffer. If
|
||||
* so, use hardware flow control to ease the pressure.
|
||||
*/
|
||||
/* later XXXX */
|
||||
|
||||
if (!ISSET(sc->sc_rx_flags, RX_IBUF_BLOCKED) &&
|
||||
cc < sc->sc_r_hiwat) {
|
||||
SET(sc->sc_rx_flags, RX_IBUF_BLOCKED);
|
||||
ixpcom_hwiflow(sc);
|
||||
}
|
||||
|
||||
/*
|
||||
* If we're out of space, disable receive interrupts
|
||||
|
|
@ -1264,26 +1407,29 @@ ixp4xxcomintr(void* arg)
|
|||
*/
|
||||
if (!cc) {
|
||||
SET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED);
|
||||
CLR(sc->sc_ier, IER_RAVIE);
|
||||
CLR(sc->sc_ier, IER_RAVIE | IER_RTOIE);
|
||||
ixp4xx_com_set_cr(sc);
|
||||
}
|
||||
} else {
|
||||
#ifdef DIAGNOSTIC
|
||||
panic("ixpcomintr: we shouldn't reach here");
|
||||
#endif
|
||||
CLR(sc->sc_ier, IER_RAVIE);
|
||||
ixp4xx_com_set_cr(sc);
|
||||
if ((iir & IIR_IMASK) == IIR_RXRDY) {
|
||||
sc->sc_ier = IER_UUE;
|
||||
delay(10);
|
||||
ixp4xx_com_set_cr(sc);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
msr = bus_space_read_4(iot, ioh, IXP425_UART_MSR);
|
||||
sc->sc_msr = msr;
|
||||
|
||||
} while (ISSET((iir = bus_space_read_4(iot, ioh, IXP425_UART_IIR)),
|
||||
IIR_RXRDY) || ((iir & IIR_IMASK) == 0));
|
||||
|
||||
/*
|
||||
* Done handling any receive interrupts. See if data can be
|
||||
* transmitted as well. Schedule tx done event if no data left
|
||||
* and tty was marked busy.
|
||||
*/
|
||||
|
||||
res = bus_space_read_4(iot, ioh, IXP425_UART_LSR);
|
||||
if (ISSET(res, LSR_TDRQ)) {
|
||||
if (ISSET(lsr, LSR_TDRQ)) {
|
||||
/*
|
||||
* If we've delayed a parameter change, do it now, and restart
|
||||
* output.
|
||||
|
|
@ -1310,6 +1456,10 @@ ixp4xxcomintr(void* arg)
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!ISSET((iir = bus_space_read_4(iot, ioh, IXP425_UART_IIR)), IIR_NOPEND))
|
||||
goto again;
|
||||
|
||||
COM_UNLOCK(sc);
|
||||
|
||||
/* Wake up the poller. */
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: ixp425_comvar.h,v 1.3 2003/06/01 01:49:56 ichiro Exp $ */
|
||||
/* $NetBSD: ixp425_comvar.h,v 1.4 2003/06/29 10:51:31 ichiro Exp $ */
|
||||
/*-
|
||||
* Copyright (c) 2001, The NetBSD Foundation, Inc. All rights reserved.
|
||||
*
|
||||
|
|
@ -77,14 +77,19 @@ struct ixp4xx_com_softc {
|
|||
volatile u_int sc_rbavail;
|
||||
|
||||
/* status flags */
|
||||
int sc_hwflags, sc_swflags;
|
||||
|
||||
int sc_hwflags,
|
||||
sc_swflags;
|
||||
volatile u_int sc_rx_flags,
|
||||
sc_tx_busy,
|
||||
sc_tx_done,
|
||||
sc_tx_stopped,
|
||||
sc_st_check,
|
||||
sc_rx_ready;
|
||||
u_int sc_overflows,
|
||||
sc_floods,
|
||||
sc_errors;
|
||||
u_int sc_r_hiwat,
|
||||
sc_r_lowat;
|
||||
volatile int sc_heldchange;
|
||||
volatile int sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr,
|
||||
sc_mcr_active, sc_lcr, sc_ier, sc_fcr,
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: ixp425reg.h,v 1.5 2003/06/03 09:20:20 ichiro Exp $ */
|
||||
/* $NetBSD: ixp425reg.h,v 1.6 2003/06/29 10:51:31 ichiro Exp $ */
|
||||
/*
|
||||
* Copyright (c) 2003
|
||||
* Ichiro FUKUHARA <ichiro@ichiro.org>.
|
||||
|
|
@ -140,6 +140,7 @@
|
|||
|
||||
/* Interrupt Identification Register */
|
||||
#define IXP425_UART_IIR 0x0008
|
||||
#define IIR_IMASK 0xf
|
||||
#define IIR_NOPEND (1U << 0) /* No pending interrupts */
|
||||
#define IIR_MLSC (0U << 1) /* Modem status */
|
||||
#define IIR_TXRDY (1U << 1) /* Transmitter ready */
|
||||
|
|
@ -191,6 +192,7 @@
|
|||
#define LSR_PE (1U << 2) /* Parity error */
|
||||
#define LSR_OE (1U << 1) /* Overrun, lost incoming byte */
|
||||
#define LSR_DR (1U << 0) /* Byte ready in Receive Buffer */
|
||||
#define LSR_RCV_MASK 0x1f /* Incoming data and error */
|
||||
|
||||
/* Modem Status Register */
|
||||
#define IXP425_UART_MSR 0x0018
|
||||
|
|
|
|||
Loading…
Reference in New Issue