77a6b82b27
This merge changes the device switch tables from static array to dynamically generated by config(8). - All device switches is defined as a constant structure in device drivers. - The new grammer ``device-major'' is introduced to ``files''. device-major <prefix> char <num> [block <num>] [<rules>] - All device major numbers must be listed up in port dependent majors.<arch> by using this grammer. - Added the new naming convention. The name of the device switch must be <prefix>_[bc]devsw for auto-generation of device switch tables. - The backward compatibility of loading block/character device switch by LKM framework is broken. This is necessary to convert from block/character device major to device name in runtime and vice versa. - The restriction to assign device major by LKM is completely removed. We don't need to reserve LKM entries for dynamic loading of device switch. - In compile time, device major numbers list is packed into the kernel and the LKM framework will refer it to assign device major number dynamically.
1588 lines
39 KiB
C
1588 lines
39 KiB
C
/* $NetBSD: cd18xx.c,v 1.4 2002/09/06 13:18:43 gehenna Exp $ */
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/*
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* Copyright (c) 1998, 2001 Matthew R. Green
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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|
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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|
* notice, this list of conditions and the following disclaimer.
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|
* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)com.c 7.5 (Berkeley) 5/16/91
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*/
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/*
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* cirrus logic CL-CD180/CD1864/CD1865 driver, based in (large) parts on
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* the com and z8530 drivers. thanks charles.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: cd18xx.c,v 1.4 2002/09/06 13:18:43 gehenna Exp $");
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/kernel.h>
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#include <sys/tty.h>
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#include <sys/fcntl.h>
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#include <machine/bus.h>
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#include <dev/ic/cd18xxvar.h>
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#include <dev/ic/cd18xxreg.h>
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#include "ioconf.h"
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/*
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* some helpers
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*/
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/* macros to clear/set/test flags. */
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#define SET(t, f) (t) |= (f)
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#define CLR(t, f) (t) &= ~(f)
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#define ISSET(t, f) ((t) & (f))
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static void cdtty_attach(struct cd18xx_softc *, int);
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static __inline void cd18xx_rint(struct cd18xx_softc *, int *);
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static __inline void cd18xx_tint(struct cd18xx_softc *, int *);
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static __inline void cd18xx_mint(struct cd18xx_softc *, int *);
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void cdtty_rxsoft(struct cd18xx_softc *, struct cdtty_port *, struct tty *);
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void cdtty_txsoft(struct cd18xx_softc *, struct cdtty_port *, struct tty *);
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void cdtty_stsoft(struct cd18xx_softc *, struct cdtty_port *, struct tty *);
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void cd18xx_softintr(void *);
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dev_type_open(cdttyopen);
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dev_type_close(cdttyclose);
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dev_type_read(cdttyread);
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dev_type_write(cdttywrite);
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dev_type_ioctl(cdttyioctl);
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dev_type_stop(cdttystop);
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dev_type_tty(cdttytty);
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dev_type_poll(cdttypoll);
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const struct cdevsw cdtty_cdevsw = {
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cdttyopen, cdttyclose, cdttyread, cdttywrite, cdttyioctl,
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cdttystop, cdttytty, cdttypoll, nommap, D_TTY
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};
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static void cdtty_shutdown(struct cd18xx_softc *, struct cdtty_port*);
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static void cdttystart(struct tty *);
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static int cdttyparam(struct tty *, struct termios *);
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static void cdtty_break(struct cd18xx_softc *, struct cdtty_port *, int);
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static void cdtty_modem(struct cd18xx_softc *, struct cdtty_port *, int);
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static int cdttyhwiflow(struct tty *, int);
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static void cdtty_hwiflow(struct cd18xx_softc *, struct cdtty_port *);
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static void cdtty_loadchannelregs(struct cd18xx_softc *,
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struct cdtty_port *);
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/* default read buffer size */
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u_int cdtty_rbuf_size = CDTTY_RING_SIZE;
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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 cdtty_rbuf_hiwat = (CDTTY_RING_SIZE * 1) / 4;
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u_int cdtty_rbuf_lowat = (CDTTY_RING_SIZE * 3) / 4;
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#define CD18XXDEBUG
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#ifdef CD18XXDEBUG
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#define CDD_INFO 0x0001
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#define CDD_INTR 0x0002
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int cd18xx_debug = CDD_INTR|CDD_INFO;
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# define DPRINTF(l, x) if (cd18xx_debug & l) printf x
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#else
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# define DPRINTF(l, x) /* nothing */
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#endif
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/* Known supported revisions. */
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struct cd18xx_revs {
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u_char revision;
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u_char onehundred_pin;
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char *name;
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} cd18xx_revs[] = {
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{ CD180_GFRCR_REV_B, 0, "CL-CD180 rev. B" },
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{ CD180_GFRCR_REV_C, 0, "CL-CD180 rev. C" },
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{ CD1864_GFRCR_REVISION_A, 1, "CL-CD1864 rev. A" },
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{ CD1865_GFRCR_REVISION_A, 1, "CL-CD1865 rev. A" },
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{ CD1865_GFRCR_REVISION_B, 1, "CL-CD1865 rev. B" },
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{ CD1865_GFRCR_REVISION_C, 1, "CL-CD1865 rev. C" },
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{ 0, 0, 0 }
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};
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/* wait for the CCR to go to zero */
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static __inline int cd18xx_wait_ccr(struct cd18xx_softc *);
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static __inline int
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cd18xx_wait_ccr(sc)
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struct cd18xx_softc *sc;
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{
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int i = 100000;
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while (--i &&
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bus_space_read_1(sc->sc_tag, sc->sc_handle, CD18xx_CCR) == 0)
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break;
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return (i == 0);
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}
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/*
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* device attach routine, high-end portion
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*/
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void
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cd18xx_attach(sc)
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struct cd18xx_softc *sc;
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{
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static int chip_id_next = 1;
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int onehundred_pin, revision, i, port;
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/* read and print the revision */
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revision = cd18xx_read(sc, CD18xx_GFRCR);
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onehundred_pin = ISSET(cd18xx_read(sc, CD18xx_SRCR),CD18xx_SRCR_PKGTYP);
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for (i = 0; cd18xx_revs[i].name; i++)
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if (revision == cd18xx_revs[i].revision ||
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onehundred_pin == cd18xx_revs[i].onehundred_pin) {
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printf(": %s", cd18xx_revs[i].name);
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break;
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}
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if (cd18xx_revs[i].name == NULL) {
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printf("%s: unknown revision, bailing.\n", sc->sc_dev.dv_xname);
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return;
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}
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/* prepare for reset */
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cd18xx_set_car(sc, 0);
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cd18xx_write(sc, CD18xx_GSVR, CD18xx_GSVR_CLEAR);
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/* wait for CCR to go to zero */
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if (cd18xx_wait_ccr(sc)) {
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printf("cd18xx_attach: reset change command timed out\n");
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return;
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}
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/* full reset of all channels */
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cd18xx_write(sc, CD18xx_CCR,
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CD18xx_CCR_RESET|CD18xx_CCR_RESET_HARD);
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/* loop until the GSVR is ready */
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i = 100000;
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while (--i && cd18xx_read(sc, CD18xx_GSVR) == CD18xx_GSVR_READY)
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;
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if (i == 0) {
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printf("\n%s: did not reset!\n", sc->sc_dev.dv_xname);
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return;
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}
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/* write the chip_id */
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sc->sc_chip_id = chip_id_next++;
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#ifdef DIAGNOSTIC
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if (sc->sc_chip_id > 31)
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panic("more than 31 cd18xx's? help.");
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#endif
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cd18xx_write(sc, CD18xx_GSVR, CD18xx_GSVR_SETID(sc));
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/* rx/tx/modem service match vectors, initalised by higher level */
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cd18xx_write(sc, CD18xx_MSMR, sc->sc_msmr | 0x80);
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cd18xx_write(sc, CD18xx_TSMR, sc->sc_tsmr | 0x80);
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cd18xx_write(sc, CD18xx_RSMR, sc->sc_rsmr | 0x80);
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printf(", gsvr %x msmr %x tsmr %x rsmr %x",
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cd18xx_read(sc, CD18xx_GSVR),
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cd18xx_read(sc, CD18xx_MSMR),
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cd18xx_read(sc, CD18xx_TSMR),
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cd18xx_read(sc, CD18xx_RSMR));
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/* prescale registers */
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sc->sc_pprh = 0xf0;
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sc->sc_pprl = 0;
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cd18xx_write(sc, CD18xx_PPRH, sc->sc_pprh);
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cd18xx_write(sc, CD18xx_PPRL, sc->sc_pprl);
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/* establish our soft interrupt. */
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sc->sc_si = softintr_establish(IPL_SOFTSERIAL, cd18xx_softintr, sc);
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printf(", 8 ports ready (chip id %d)\n", sc->sc_chip_id);
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/*
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* finally, we loop over all 8 channels initialising them
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*/
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for (port = 0; port < 8; port++)
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cdtty_attach(sc, port);
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}
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/* tty portion of the code */
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/*
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* tty portion attach routine
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*/
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void
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cdtty_attach(sc, port)
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struct cd18xx_softc *sc;
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int port;
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{
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struct cdtty_port *p = &sc->sc_ports[port];
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int i;
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/* load CAR with channel number */
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cd18xx_set_car(sc, port);
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/* wait for CCR to go to zero */
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if (cd18xx_wait_ccr(sc)) {
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printf("cd18xx_attach: change command timed out setting "
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"CAR for port %d\n", i);
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return;
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}
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/* set the RPTR to (arbitrary) 8 */
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cd18xx_write(sc, CD18xx_RTPR, 8);
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/* reset the modem signal value register */
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sc->sc_ports[port].p_msvr = CD18xx_MSVR_RESET;
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/* zero the service request enable register */
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cd18xx_write(sc, CD18xx_SRER, 0);
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/* enable the transmitter & receiver */
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SET(p->p_chanctl, CD18xx_CCR_CHANCTL |
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CD18xx_CCR_CHANCTL_TxEN |
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CD18xx_CCR_CHANCTL_RxEN);
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/* XXX no console or kgdb support yet! */
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/* get a tty structure */
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p->p_tty = ttymalloc();
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p->p_tty->t_oproc = cdttystart;
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p->p_tty->t_param = cdttyparam;
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p->p_tty->t_hwiflow = cdttyhwiflow;
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p->p_rbuf = malloc(cdtty_rbuf_size << 1, M_DEVBUF, M_WAITOK);
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p->p_rbput = p->p_rbget = p->p_rbuf;
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p->p_rbavail = cdtty_rbuf_size;
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if (p->p_rbuf == NULL) {
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printf("%s: unable to allocate ring buffer for tty %d\n",
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sc->sc_dev.dv_xname, port);
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return;
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}
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p->p_ebuf = p->p_rbuf + (cdtty_rbuf_size << 1);
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tty_attach(p->p_tty);
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}
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|
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/*
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* below here are the tty portion device routines.
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*/
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void
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cdtty_shutdown(sc, p)
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struct cd18xx_softc *sc;
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struct cdtty_port *p;
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{
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struct tty *tp = p->p_tty;
|
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int s;
|
|
|
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s = splserial();
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|
|
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/* If we were asserting flow control, then deassert it. */
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SET(p->p_rx_flags, RX_IBUF_BLOCKED);
|
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cdtty_hwiflow(sc, p);
|
|
|
|
/* Clear any break condition set with TIOCSBRK. */
|
|
cdtty_break(sc, p, 0);
|
|
|
|
/*
|
|
* Hang up if necessary. Wait a bit, so the other side has time to
|
|
* notice even if we immediately open the port again.
|
|
* Avoid tsleeping above splhigh().
|
|
*/
|
|
if (ISSET(tp->t_cflag, HUPCL)) {
|
|
cdtty_modem(sc, p, 0);
|
|
splx(s);
|
|
/* XXX tsleep will only timeout */
|
|
(void) tsleep(sc, TTIPRI, ttclos, hz);
|
|
s = splserial();
|
|
}
|
|
|
|
/* Turn off interrupts. */
|
|
p->p_srer = 0;
|
|
cd18xx_write(sc, CD18xx_SRER, p->p_srer);
|
|
|
|
splx(s);
|
|
}
|
|
|
|
/*
|
|
* cdttyopen: open syscall for cdtty terminals..
|
|
*/
|
|
int
|
|
cdttyopen(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
struct tty *tp;
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *port;
|
|
int channel, instance, s, error;
|
|
|
|
channel = CD18XX_CHANNEL(dev);
|
|
instance = CD18XX_INSTANCE(dev);
|
|
|
|
/* ensure instance is valid */
|
|
if (instance >= clcd_cd.cd_ndevs)
|
|
return (ENXIO);
|
|
|
|
/* get softc and port */
|
|
sc = clcd_cd.cd_devs[instance];
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
port = &sc->sc_ports[channel];
|
|
if (port == NULL || port->p_rbuf == NULL)
|
|
return (ENXIO);
|
|
|
|
/* kgdb support? maybe later... */
|
|
|
|
tp = port->p_tty;
|
|
|
|
/* enforce exclude */
|
|
if (tp == NULL ||
|
|
(ISSET(tp->t_state, TS_ISOPEN) &&
|
|
ISSET(tp->t_state, TS_XCLUDE) &&
|
|
(p->p_ucred->cr_uid != 0)))
|
|
return (EBUSY);
|
|
|
|
s = spltty();
|
|
|
|
/*
|
|
* Do the following iff this is a first open.
|
|
*/
|
|
if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
|
|
struct termios t;
|
|
|
|
/* set up things in tp as necessary */
|
|
tp->t_dev = dev;
|
|
|
|
/*
|
|
* Initialize the termios status to the defaults. Add in the
|
|
* sticky bits from TIOCSFLAGS.
|
|
*/
|
|
t.c_ispeed = 0;
|
|
t.c_ospeed = TTYDEF_SPEED;
|
|
t.c_cflag = TTYDEF_CFLAG;
|
|
|
|
if (ISSET(port->p_swflags, TIOCFLAG_CLOCAL))
|
|
SET(t.c_cflag, CLOCAL);
|
|
if (ISSET(port->p_swflags, TIOCFLAG_CRTSCTS))
|
|
SET(t.c_cflag, CRTSCTS);
|
|
if (ISSET(port->p_swflags, TIOCFLAG_CDTRCTS))
|
|
SET(t.c_cflag, CDTRCTS);
|
|
if (ISSET(port->p_swflags, TIOCFLAG_MDMBUF))
|
|
SET(t.c_cflag, MDMBUF);
|
|
|
|
/* Make sure param will see changes. */
|
|
tp->t_ospeed = 0;
|
|
(void)cdttyparam(tp, &t);
|
|
|
|
tp->t_iflag = TTYDEF_IFLAG;
|
|
tp->t_oflag = TTYDEF_OFLAG;
|
|
tp->t_lflag = TTYDEF_LFLAG;
|
|
ttychars(tp);
|
|
ttsetwater(tp);
|
|
|
|
(void)splserial();
|
|
|
|
/* turn on rx and modem interrupts */
|
|
cd18xx_set_car(sc, CD18XX_CHANNEL(dev));
|
|
SET(port->p_srer, CD18xx_SRER_Rx |
|
|
CD18xx_SRER_RxSC |
|
|
CD18xx_SRER_CD);
|
|
cd18xx_write(sc, CD18xx_SRER, port->p_srer);
|
|
|
|
/* always turn on DTR when open */
|
|
cdtty_modem(sc, port, 1);
|
|
|
|
/* initialise ring buffer */
|
|
port->p_rbget = port->p_rbput = port->p_rbuf;
|
|
port->p_rbavail = cdtty_rbuf_size;
|
|
CLR(port->p_rx_flags, RX_ANY_BLOCK);
|
|
cdtty_hwiflow(sc, port);
|
|
}
|
|
|
|
/* drop spl back before going into the line open */
|
|
splx(s);
|
|
|
|
error = ttyopen(tp, CD18XX_DIALOUT(dev), ISSET(flag, O_NONBLOCK));
|
|
if (error == 0)
|
|
error = (*tp->t_linesw->l_open)(dev, tp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* cdttyclose: close syscall for cdtty terminals..
|
|
*/
|
|
int
|
|
cdttyclose(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *port;
|
|
struct tty *tp;
|
|
int channel, instance;
|
|
|
|
channel = CD18XX_CHANNEL(dev);
|
|
instance = CD18XX_INSTANCE(dev);
|
|
|
|
/* ensure instance is valid */
|
|
if (instance >= clcd_cd.cd_ndevs)
|
|
return (ENXIO);
|
|
|
|
/* get softc and port */
|
|
sc = clcd_cd.cd_devs[instance];
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
port = &sc->sc_ports[channel];
|
|
|
|
tp = port->p_tty;
|
|
|
|
(*tp->t_linesw->l_close)(tp, flag);
|
|
ttyclose(tp);
|
|
|
|
if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
|
|
/*
|
|
* Although we got a last close, the device may still be in
|
|
* use; e.g. if this was the dialout node, and there are still
|
|
* processes waiting for carrier on the non-dialout node.
|
|
*/
|
|
cdtty_shutdown(sc, port);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* cdttyread: read syscall for cdtty terminals..
|
|
*/
|
|
int
|
|
cdttyread(dev, uio, flag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flag;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(dev)];
|
|
struct cdtty_port *port = &sc->sc_ports[CD18XX_CHANNEL(dev)];
|
|
struct tty *tp = port->p_tty;
|
|
|
|
return ((*tp->t_linesw->l_read)(tp, uio, flag));
|
|
}
|
|
|
|
/*
|
|
* cdttywrite: write syscall for cdtty terminals..
|
|
*/
|
|
int
|
|
cdttywrite(dev, uio, flag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flag;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(dev)];
|
|
struct cdtty_port *port = &sc->sc_ports[CD18XX_CHANNEL(dev)];
|
|
struct tty *tp = port->p_tty;
|
|
|
|
return ((*tp->t_linesw->l_write)(tp, uio, flag));
|
|
}
|
|
|
|
int
|
|
cdttypoll(dev, events, p)
|
|
dev_t dev;
|
|
int events;
|
|
struct proc *p;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(dev)];
|
|
struct cdtty_port *port = &sc->sc_ports[CD18XX_CHANNEL(dev)];
|
|
struct tty *tp = port->p_tty;
|
|
|
|
return ((*tp->t_linesw->l_poll)(tp, events, p));
|
|
}
|
|
|
|
/*
|
|
* cdttytty: return a pointer to our (cdtty) tp.
|
|
*/
|
|
struct tty *
|
|
cdttytty(dev)
|
|
dev_t dev;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(dev)];
|
|
struct cdtty_port *port = &sc->sc_ports[CD18XX_CHANNEL(dev)];
|
|
|
|
return (port->p_tty);
|
|
}
|
|
|
|
/*
|
|
* cdttyioctl: ioctl syscall for cdtty terminals..
|
|
*/
|
|
int
|
|
cdttyioctl(dev, cmd, data, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(dev)];
|
|
struct cdtty_port *port = &sc->sc_ports[CD18XX_CHANNEL(dev)];
|
|
struct tty *tp = port->p_tty;
|
|
int error, s;
|
|
|
|
error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, p);
|
|
if (error != EPASSTHROUGH)
|
|
return (error);
|
|
|
|
error = ttioctl(tp, cmd, data, flag, p);
|
|
if (error != EPASSTHROUGH)
|
|
return (error);
|
|
|
|
s = splserial();
|
|
|
|
switch (cmd) {
|
|
case TIOCSBRK:
|
|
cdtty_break(sc, port, 1);
|
|
break;
|
|
|
|
case TIOCCBRK:
|
|
cdtty_break(sc, port, 0);
|
|
break;
|
|
|
|
case TIOCSDTR:
|
|
cdtty_modem(sc, port, 1);
|
|
break;
|
|
|
|
case TIOCCDTR:
|
|
cdtty_modem(sc, port, 0);
|
|
break;
|
|
|
|
case TIOCGFLAGS:
|
|
*(int *)data = port->p_swflags;
|
|
break;
|
|
|
|
case TIOCSFLAGS:
|
|
error = suser(p->p_ucred, &p->p_acflag);
|
|
if (error)
|
|
return (error);
|
|
port->p_swflags = *(int *)data;
|
|
break;
|
|
|
|
case TIOCMSET:
|
|
case TIOCMBIS:
|
|
case TIOCMBIC:
|
|
case TIOCMGET:
|
|
default:
|
|
return (EPASSTHROUGH);
|
|
}
|
|
|
|
splx(s);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Start or restart transmission.
|
|
*/
|
|
static void
|
|
cdttystart(tp)
|
|
struct tty *tp;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(tp->t_dev)];
|
|
struct cdtty_port *p = &sc->sc_ports[CD18XX_CHANNEL(tp->t_dev)];
|
|
int s;
|
|
|
|
s = spltty();
|
|
if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP))
|
|
goto out;
|
|
if (p->p_tx_stopped)
|
|
goto out;
|
|
|
|
if (tp->t_outq.c_cc <= tp->t_lowat) {
|
|
if (ISSET(tp->t_state, TS_ASLEEP)) {
|
|
CLR(tp->t_state, TS_ASLEEP);
|
|
wakeup((caddr_t)&tp->t_outq);
|
|
}
|
|
selwakeup(&tp->t_wsel);
|
|
if (tp->t_outq.c_cc == 0)
|
|
goto out;
|
|
}
|
|
|
|
/* Grab the first contiguous region of buffer space. */
|
|
{
|
|
u_char *tba;
|
|
int tbc;
|
|
|
|
tba = tp->t_outq.c_cf;
|
|
tbc = ndqb(&tp->t_outq, 0);
|
|
|
|
(void)splserial();
|
|
|
|
p->p_tba = tba;
|
|
p->p_tbc = tbc;
|
|
}
|
|
|
|
SET(tp->t_state, TS_BUSY);
|
|
p->p_tx_busy = 1;
|
|
|
|
/* turn on tx interrupts */
|
|
if ((p->p_srer & CD18xx_SRER_Tx) == 0) {
|
|
cd18xx_set_car(sc, CD18XX_CHANNEL(tp->t_dev));
|
|
SET(p->p_srer, CD18xx_SRER_Tx);
|
|
cd18xx_write(sc, CD18xx_SRER, p->p_srer);
|
|
}
|
|
|
|
/*
|
|
* Now bail; we can't actually transmit bytes until we're in a
|
|
* transmit interrupt service routine.
|
|
*/
|
|
out:
|
|
splx(s);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* cdttystop: handing ^S or other stop signals, for a cdtty
|
|
*/
|
|
void
|
|
cdttystop(tp, flag)
|
|
struct tty *tp;
|
|
int flag;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(tp->t_dev)];
|
|
struct cdtty_port *p = &sc->sc_ports[CD18XX_CHANNEL(tp->t_dev)];
|
|
int s;
|
|
|
|
s = splserial();
|
|
if (ISSET(tp->t_state, TS_BUSY)) {
|
|
/* Stop transmitting at the next chunk. */
|
|
p->p_tbc = 0;
|
|
p->p_heldtbc = 0;
|
|
if (!ISSET(tp->t_state, TS_TTSTOP))
|
|
SET(tp->t_state, TS_FLUSH);
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
/*
|
|
* load a channel's registers.
|
|
*/
|
|
void
|
|
cdtty_loadchannelregs(sc, p)
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *p;
|
|
{
|
|
|
|
cd18xx_set_car(sc, CD18XX_CHANNEL(p->p_tty->t_dev));
|
|
cd18xx_write(sc, CD18xx_SRER, p->p_srer);
|
|
cd18xx_write(sc, CD18xx_MSVR, p->p_msvr_active = p->p_msvr);
|
|
cd18xx_write(sc, CD18xx_COR1, p->p_cor1);
|
|
cd18xx_write(sc, CD18xx_COR2, p->p_cor2);
|
|
cd18xx_write(sc, CD18xx_COR3, p->p_cor3);
|
|
/*
|
|
* COR2 and COR3 change commands are not required here for
|
|
* the CL-CD1865 but we do them anyway for simplicity.
|
|
*/
|
|
cd18xx_write(sc, CD18xx_CCR, CD18xx_CCR_CORCHG |
|
|
CD18xx_CCR_CORCHG_COR1 |
|
|
CD18xx_CCR_CORCHG_COR2 |
|
|
CD18xx_CCR_CORCHG_COR3);
|
|
cd18xx_write(sc, CD18xx_RBPRH, p->p_rbprh);
|
|
cd18xx_write(sc, CD18xx_RBPRL, p->p_rbprl);
|
|
cd18xx_write(sc, CD18xx_TBPRH, p->p_tbprh);
|
|
cd18xx_write(sc, CD18xx_TBPRL, p->p_tbprl);
|
|
if (cd18xx_wait_ccr(sc)) {
|
|
DPRINTF(CDD_INFO,
|
|
("%s: cdtty_loadchannelregs ccr wait timed out\n",
|
|
sc->sc_dev.dv_xname));
|
|
}
|
|
cd18xx_write(sc, CD18xx_CCR, p->p_chanctl);
|
|
}
|
|
|
|
/*
|
|
* Set tty parameters from termios.
|
|
* XXX - Should just copy the whole termios after
|
|
* making sure all the changes could be done.
|
|
*/
|
|
static int
|
|
cdttyparam(tp, t)
|
|
struct tty *tp;
|
|
struct termios *t;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(tp->t_dev)];
|
|
struct cdtty_port *p = &sc->sc_ports[CD18XX_CHANNEL(tp->t_dev)];
|
|
int s;
|
|
|
|
/* Check requested parameters. */
|
|
if (t->c_ospeed < 0)
|
|
return (EINVAL);
|
|
if (t->c_ispeed && t->c_ispeed != t->c_ospeed)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* For the console, always force CLOCAL and !HUPCL, so that the port
|
|
* is always active.
|
|
*/
|
|
if (ISSET(p->p_swflags, TIOCFLAG_SOFTCAR)) {
|
|
SET(t->c_cflag, CLOCAL);
|
|
CLR(t->c_cflag, HUPCL);
|
|
}
|
|
|
|
/*
|
|
* If there were no changes, don't do anything. This avoids dropping
|
|
* input and improves performance when all we did was frob things like
|
|
* VMIN and VTIME.
|
|
*/
|
|
if (tp->t_ospeed == t->c_ospeed &&
|
|
tp->t_cflag == t->c_cflag)
|
|
return (0);
|
|
|
|
/*
|
|
* Block interrupts so that state will not
|
|
* be altered until we are done setting it up.
|
|
*/
|
|
s = splserial();
|
|
|
|
/*
|
|
* Copy across the size, parity and stop bit info.
|
|
*/
|
|
switch (t->c_cflag & CSIZE) {
|
|
case CS5:
|
|
p->p_cor1 = CD18xx_COR1_CS5;
|
|
break;
|
|
case CS6:
|
|
p->p_cor1 = CD18xx_COR1_CS6;
|
|
break;
|
|
case CS7:
|
|
p->p_cor1 = CD18xx_COR1_CS7;
|
|
break;
|
|
default:
|
|
p->p_cor1 = CD18xx_COR1_CS8;
|
|
break;
|
|
}
|
|
if (ISSET(t->c_cflag, PARENB)) {
|
|
SET(p->p_cor1, CD18xx_COR1_PARITY_NORMAL);
|
|
if (ISSET(t->c_cflag, PARODD))
|
|
SET(p->p_cor1, CD18xx_COR1_PARITY_ODD);
|
|
}
|
|
if (!ISSET(t->c_iflag, INPCK))
|
|
SET(p->p_cor1, CD18xx_COR1_IGNORE);
|
|
if (ISSET(t->c_cflag, CSTOPB))
|
|
SET(p->p_cor1, CD18xx_COR1_STOPBIT_2);
|
|
|
|
/*
|
|
* If we're not in a mode that assumes a connection is present, then
|
|
* ignore carrier changes.
|
|
*/
|
|
if (ISSET(t->c_cflag, CLOCAL | MDMBUF))
|
|
p->p_msvr_dcd = 0;
|
|
else
|
|
p->p_msvr_dcd = CD18xx_MSVR_CD;
|
|
|
|
/*
|
|
* Set the flow control pins depending on the current flow control
|
|
* mode.
|
|
*/
|
|
if (ISSET(t->c_cflag, CRTSCTS)) {
|
|
p->p_mcor1_dtr = CD18xx_MCOR1_DTR;
|
|
p->p_msvr_rts = CD18xx_MSVR_RTS;
|
|
p->p_msvr_cts = CD18xx_MSVR_CTS;
|
|
p->p_cor2 = CD18xx_COR2_RTSAOE|CD18xx_COR2_CTSAE;
|
|
} else if (ISSET(t->c_cflag, MDMBUF)) {
|
|
/*
|
|
* For DTR/DCD flow control, make sure we don't toggle DTR for
|
|
* carrier detection.
|
|
*/
|
|
p->p_mcor1_dtr = 0;
|
|
p->p_msvr_rts = CD18xx_MSVR_DTR;
|
|
p->p_msvr_cts = CD18xx_MSVR_CD;
|
|
p->p_cor2 = 0;
|
|
} else {
|
|
/*
|
|
* If no flow control, then always set RTS. This will make
|
|
* the other side happy if it mistakenly thinks we're doing
|
|
* RTS/CTS flow control.
|
|
*/
|
|
p->p_mcor1_dtr = CD18xx_MSVR_DTR;
|
|
p->p_msvr_rts = 0;
|
|
p->p_msvr_cts = 0;
|
|
p->p_cor2 = 0;
|
|
}
|
|
p->p_msvr_mask = p->p_msvr_cts | p->p_msvr_dcd;
|
|
|
|
/*
|
|
* Set the FIFO threshold based on the receive speed.
|
|
*
|
|
* * If it's a low speed, it's probably a mouse or some other
|
|
* interactive device, so set the threshold low.
|
|
* * If it's a high speed, trim the trigger level down to prevent
|
|
* overflows.
|
|
* * Otherwise set it a bit higher.
|
|
*/
|
|
p->p_cor3 = (t->c_ospeed <= 1200 ? 1 :
|
|
t->c_ospeed <= 38400 ? 8 : 4);
|
|
|
|
#define PORT_RATE(o, s) \
|
|
(((((o) + (s)/2) / (s)) + CD18xx_xBRPR_TPC/2) / CD18xx_xBRPR_TPC)
|
|
/* Compute BPS for the requested speeds */
|
|
if (t->c_ospeed) {
|
|
u_int32_t tbpr = PORT_RATE(sc->sc_osc, t->c_ospeed);
|
|
|
|
if (tbpr == 0 || tbpr > 0xffff)
|
|
return (EINVAL);
|
|
|
|
p->p_tbprh = tbpr >> 8;
|
|
p->p_tbprl = tbpr & 0xff;
|
|
}
|
|
|
|
if (t->c_ispeed) {
|
|
u_int32_t rbpr = PORT_RATE(sc->sc_osc, t->c_ispeed);
|
|
|
|
if (rbpr == 0 || rbpr > 0xffff)
|
|
return (EINVAL);
|
|
|
|
p->p_rbprh = rbpr >> 8;
|
|
p->p_rbprl = rbpr & 0xff;
|
|
}
|
|
|
|
/* And copy to tty. */
|
|
tp->t_ispeed = 0;
|
|
tp->t_ospeed = t->c_ospeed;
|
|
tp->t_cflag = t->c_cflag;
|
|
|
|
if (!p->p_heldchange) {
|
|
if (p->p_tx_busy) {
|
|
p->p_heldtbc = p->p_tbc;
|
|
p->p_tbc = 0;
|
|
p->p_heldchange = 1;
|
|
} else
|
|
cdtty_loadchannelregs(sc, p);
|
|
}
|
|
|
|
if (!ISSET(t->c_cflag, CHWFLOW)) {
|
|
/* Disable the high water mark. */
|
|
p->p_r_hiwat = 0;
|
|
p->p_r_lowat = 0;
|
|
if (ISSET(p->p_rx_flags, RX_TTY_OVERFLOWED)) {
|
|
CLR(p->p_rx_flags, RX_TTY_OVERFLOWED);
|
|
softintr_schedule(sc->sc_si);
|
|
}
|
|
if (ISSET(p->p_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED)) {
|
|
CLR(p->p_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED);
|
|
cdtty_hwiflow(sc, p);
|
|
}
|
|
} else {
|
|
p->p_r_hiwat = cdtty_rbuf_hiwat;
|
|
p->p_r_lowat = cdtty_rbuf_lowat;
|
|
}
|
|
|
|
splx(s);
|
|
|
|
/*
|
|
* Update the tty layer's idea of the carrier bit, in case we changed
|
|
* CLOCAL or MDMBUF. We don't hang up here; we only do that by
|
|
* explicit request.
|
|
*/
|
|
(void) (*tp->t_linesw->l_modem)(tp, ISSET(p->p_msvr, CD18xx_MSVR_CD));
|
|
|
|
if (!ISSET(t->c_cflag, CHWFLOW)) {
|
|
if (p->p_tx_stopped) {
|
|
p->p_tx_stopped = 0;
|
|
cdttystart(tp);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
cdtty_break(sc, p, onoff)
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *p;
|
|
int onoff;
|
|
{
|
|
|
|
/* tell tx intr handler we need a break */
|
|
p->p_needbreak = !!onoff;
|
|
|
|
/* turn on tx interrupts if break has changed */
|
|
if (p->p_needbreak != p->p_break)
|
|
SET(p->p_srer, CD18xx_SRER_Tx);
|
|
|
|
if (!p->p_heldchange) {
|
|
if (p->p_tx_busy) {
|
|
p->p_heldtbc = p->p_tbc;
|
|
p->p_tbc = 0;
|
|
p->p_heldchange = 1;
|
|
} else
|
|
cdtty_loadchannelregs(sc, p);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Raise or lower modem control (DTR/RTS) signals. If a character is
|
|
* in transmission, the change is deferred.
|
|
*/
|
|
static void
|
|
cdtty_modem(sc, p, onoff)
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *p;
|
|
int onoff;
|
|
{
|
|
|
|
if (p->p_mcor1_dtr == 0)
|
|
return;
|
|
|
|
if (onoff)
|
|
CLR(p->p_mcor1, p->p_mcor1_dtr);
|
|
else
|
|
SET(p->p_mcor1, p->p_mcor1_dtr);
|
|
|
|
if (!p->p_heldchange) {
|
|
if (p->p_tx_busy) {
|
|
p->p_heldtbc = p->p_tbc;
|
|
p->p_tbc = 0;
|
|
p->p_heldchange = 1;
|
|
} else
|
|
cdtty_loadchannelregs(sc, p);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Try to block or unblock input using hardware flow-control.
|
|
* This is called by kern/tty.c if MDMBUF|CRTSCTS is set, and
|
|
* if this function returns non-zero, the TS_TBLOCK flag will
|
|
* be set or cleared according to the "block" arg passed.
|
|
*/
|
|
int
|
|
cdttyhwiflow(tp, block)
|
|
struct tty *tp;
|
|
int block;
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[CD18XX_INSTANCE(tp->t_dev)];
|
|
struct cdtty_port *p = &sc->sc_ports[CD18XX_CHANNEL(tp->t_dev)];
|
|
int s;
|
|
|
|
if (p->p_msvr_rts == 0)
|
|
return (0);
|
|
|
|
s = splserial();
|
|
if (block) {
|
|
if (!ISSET(p->p_rx_flags, RX_TTY_BLOCKED)) {
|
|
SET(p->p_rx_flags, RX_TTY_BLOCKED);
|
|
cdtty_hwiflow(sc, p);
|
|
}
|
|
} else {
|
|
if (ISSET(p->p_rx_flags, RX_TTY_OVERFLOWED)) {
|
|
CLR(p->p_rx_flags, RX_TTY_OVERFLOWED);
|
|
softintr_schedule(sc->sc_si);
|
|
}
|
|
if (ISSET(p->p_rx_flags, RX_TTY_BLOCKED)) {
|
|
CLR(p->p_rx_flags, RX_TTY_BLOCKED);
|
|
cdtty_hwiflow(sc, p);
|
|
}
|
|
}
|
|
splx(s);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Internal version of cdttyhwiflow, called at cdtty's priority.
|
|
*/
|
|
static void
|
|
cdtty_hwiflow(sc, p)
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *p;
|
|
{
|
|
|
|
if (p->p_msvr_rts == 0)
|
|
return;
|
|
|
|
if (ISSET(p->p_rx_flags, RX_ANY_BLOCK)) {
|
|
CLR(p->p_msvr, p->p_msvr_rts);
|
|
CLR(p->p_msvr_active, p->p_msvr_rts);
|
|
} else {
|
|
SET(p->p_msvr, p->p_msvr_rts);
|
|
SET(p->p_msvr_active, p->p_msvr_rts);
|
|
}
|
|
cd18xx_set_car(sc, CD18XX_CHANNEL(p->p_tty->t_dev));
|
|
cd18xx_write(sc, CD18xx_MSVR, p->p_msvr_active);
|
|
}
|
|
|
|
/*
|
|
* indiviual interrupt routines.
|
|
*/
|
|
|
|
/*
|
|
* this is the number of interrupts allowed, total. set it to 0
|
|
* to allow unlimited interrpts
|
|
*/
|
|
#define INTR_MAX_ALLOWED 0
|
|
|
|
#if INTR_MAX_ALLOWED == 0
|
|
#define GOTINTR(sc, p) /* nothing */
|
|
#else
|
|
int intrcount;
|
|
#define GOTINTR(sc, p) \
|
|
do { \
|
|
if (intrcount++ == INTR_MAX_ALLOWED) { \
|
|
CLR(p->p_srer, CD18xx_SRER_Tx); \
|
|
cd18xx_write(sc, CD18xx_SRER, p->p_srer); \
|
|
} \
|
|
DPRINTF(CDD_INTR, (", intrcount %d srer %x", intrcount, p->p_srer)); \
|
|
} while (0)
|
|
#endif
|
|
|
|
/* receiver interrupt */
|
|
static __inline void
|
|
cd18xx_rint(sc, ns)
|
|
struct cd18xx_softc *sc;
|
|
int *ns;
|
|
{
|
|
struct cdtty_port *p;
|
|
u_int channel, count;
|
|
u_char *put, *end;
|
|
u_int cc;
|
|
|
|
/* work out the channel and softc */
|
|
channel = cd18xx_get_gscr1_channel(sc);
|
|
p = &sc->sc_ports[channel];
|
|
DPRINTF(CDD_INTR, ("%s: rint: channel %d", sc->sc_dev.dv_xname, channel));
|
|
GOTINTR(sc, p);
|
|
|
|
end = p->p_ebuf;
|
|
put = p->p_rbput;
|
|
cc = p->p_rbavail;
|
|
|
|
/* read as many bytes as necessary */
|
|
count = cd18xx_read(sc, CD18xx_RDCR);
|
|
DPRINTF(CDD_INTR, (", %d bytes available: ", count));
|
|
|
|
while (cc > 0 && count > 0) {
|
|
u_char rcsr = cd18xx_read(sc, CD18xx_RCSR);
|
|
|
|
put[0] = cd18xx_read(sc, CD18xx_RDR);
|
|
put[1] = rcsr;
|
|
|
|
if (rcsr)
|
|
*ns = 1;
|
|
|
|
put += 2;
|
|
if (put >= end)
|
|
put = p->p_rbuf;
|
|
|
|
DPRINTF(CDD_INTR, ("."));
|
|
cc--;
|
|
count--;
|
|
}
|
|
|
|
DPRINTF(CDD_INTR, (" finished reading"));
|
|
|
|
/*
|
|
* Current string of incoming characters ended because
|
|
* no more data was available or we ran out of space.
|
|
* If we're out of space, turn off receive interrupts.
|
|
*/
|
|
p->p_rbput = put;
|
|
p->p_rbavail = cc;
|
|
if (!ISSET(p->p_rx_flags, RX_TTY_OVERFLOWED)) {
|
|
p->p_rx_ready = 1;
|
|
}
|
|
|
|
/*
|
|
* If we're out of space, disable receive interrupts
|
|
* until the queue has drained a bit.
|
|
*/
|
|
if (!cc) {
|
|
SET(p->p_rx_flags, RX_IBUF_OVERFLOWED);
|
|
CLR(p->p_srer, CD18xx_SRER_Rx |
|
|
CD18xx_SRER_RxSC |
|
|
CD18xx_SRER_CD);
|
|
cd18xx_write(sc, CD18xx_SRER, p->p_srer);
|
|
}
|
|
|
|
/* finish the interrupt transaction with the IC */
|
|
cd18xx_write(sc, CD18xx_EOSRR, 0);
|
|
DPRINTF(CDD_INTR, (", done\n"));
|
|
}
|
|
|
|
/*
|
|
* transmitter interrupt
|
|
*
|
|
* note this relys on the fact that we allow the transmitter FIFO to
|
|
* drain completely
|
|
*/
|
|
static __inline void
|
|
cd18xx_tint(sc, ns)
|
|
struct cd18xx_softc *sc;
|
|
int *ns;
|
|
{
|
|
struct cdtty_port *p;
|
|
u_int channel;
|
|
|
|
/* work out the channel and softc */
|
|
channel = cd18xx_get_gscr1_channel(sc);
|
|
p = &sc->sc_ports[channel];
|
|
DPRINTF(CDD_INTR, ("%s: tint: channel %d", sc->sc_dev.dv_xname,
|
|
channel));
|
|
GOTINTR(sc, p);
|
|
|
|
/* if the current break condition is wrong, fix it */
|
|
if (p->p_break != p->p_needbreak) {
|
|
u_char buf[2];
|
|
|
|
DPRINTF(CDD_INTR, (", changing break to %d", p->p_needbreak));
|
|
|
|
/* turn on ETC processing */
|
|
cd18xx_write(sc, CD18xx_COR2, p->p_cor2 | CD18xx_COR2_ETC);
|
|
|
|
buf[0] = CD18xx_TDR_ETC_BYTE;
|
|
buf[1] = p->p_needbreak ? CD18xx_TDR_BREAK_BYTE :
|
|
CD18xx_TDR_NOBREAK_BYTE;
|
|
cd18xx_write_multi(sc, CD18xx_TDR, buf, 2);
|
|
|
|
p->p_break = p->p_needbreak;
|
|
|
|
/* turn off ETC processing */
|
|
cd18xx_write(sc, CD18xx_COR2, p->p_cor2);
|
|
}
|
|
|
|
/*
|
|
* If we've delayed a parameter change, do it now, and restart
|
|
* output.
|
|
*/
|
|
if (p->p_heldchange) {
|
|
cdtty_loadchannelregs(sc, p);
|
|
p->p_heldchange = 0;
|
|
p->p_tbc = p->p_heldtbc;
|
|
p->p_heldtbc = 0;
|
|
}
|
|
|
|
/* Output the next chunk of the contiguous buffer, if any. */
|
|
if (p->p_tbc > 0) {
|
|
int n;
|
|
|
|
n = p->p_tbc;
|
|
if (n > 8) /* write up to 8 entries */
|
|
n = 8;
|
|
DPRINTF(CDD_INTR, (", writing %d bytes to TDR", n));
|
|
cd18xx_write_multi(sc, CD18xx_TDR, p->p_tba, n);
|
|
p->p_tbc -= n;
|
|
p->p_tba += n;
|
|
}
|
|
|
|
/* Disable transmit completion interrupts if we ran out of bytes. */
|
|
if (p->p_tbc == 0) {
|
|
/* Note that Tx interupts should already be enabled */
|
|
if (ISSET(p->p_srer, CD18xx_SRER_Tx)) {
|
|
DPRINTF(CDD_INTR, (", disabling tx interrupts"));
|
|
CLR(p->p_srer, CD18xx_SRER_Tx);
|
|
cd18xx_write(sc, CD18xx_SRER, p->p_srer);
|
|
}
|
|
if (p->p_tx_busy) {
|
|
p->p_tx_busy = 0;
|
|
p->p_tx_done = 1;
|
|
}
|
|
}
|
|
*ns = 1;
|
|
|
|
/* finish the interrupt transaction with the IC */
|
|
cd18xx_write(sc, CD18xx_EOSRR, 0);
|
|
DPRINTF(CDD_INTR, (", done\n"));
|
|
}
|
|
|
|
/* modem signal change interrupt */
|
|
static __inline void
|
|
cd18xx_mint(sc, ns)
|
|
struct cd18xx_softc *sc;
|
|
int *ns;
|
|
{
|
|
struct cdtty_port *p;
|
|
u_int channel;
|
|
u_char msvr, delta;
|
|
|
|
/* work out the channel and softc */
|
|
channel = cd18xx_get_gscr1_channel(sc);
|
|
p = &sc->sc_ports[channel];
|
|
DPRINTF(CDD_INTR, ("%s: mint: channel %d", sc->sc_dev.dv_xname, channel));
|
|
GOTINTR(sc, p);
|
|
|
|
/*
|
|
* We ignore the MCR register, and handle detecting deltas
|
|
* via software, like many other serial drivers.
|
|
*/
|
|
msvr = cd18xx_read(sc, CD18xx_MSVR);
|
|
delta = msvr ^ p->p_msvr;
|
|
DPRINTF(CDD_INTR, (", msvr %d", msvr));
|
|
|
|
/*
|
|
* Process normal status changes
|
|
*/
|
|
if (ISSET(delta, p->p_msvr_mask)) {
|
|
SET(p->p_msvr_delta, delta);
|
|
|
|
DPRINTF(CDD_INTR, (", status changed delta %d", delta));
|
|
/*
|
|
* Stop output immediately if we lose the output
|
|
* flow control signal or carrier detect.
|
|
*/
|
|
if (ISSET(~msvr, p->p_msvr_mask)) {
|
|
p->p_tbc = 0;
|
|
p->p_heldtbc = 0;
|
|
/* Stop modem interrupt processing */
|
|
}
|
|
p->p_st_check = 1;
|
|
*ns = 1;
|
|
}
|
|
|
|
/* reset the modem signal register */
|
|
cd18xx_write(sc, CD18xx_MCR, 0);
|
|
|
|
/* finish the interrupt transaction with the IC */
|
|
cd18xx_write(sc, CD18xx_EOSRR, 0);
|
|
DPRINTF(CDD_INTR, (", done\n"));
|
|
}
|
|
|
|
/*
|
|
* hardware interrupt routine. call the relevant interrupt routines until
|
|
* no interrupts are pending.
|
|
*
|
|
* note: we do receive interrupts before all others (as we'd rather lose
|
|
* a chance to transmit, than lose a character). and we do transmit
|
|
* interrupts before modem interrupts.
|
|
*
|
|
* we have to traverse all of the cd18xx's attached, unfortunately.
|
|
*/
|
|
int
|
|
cd18xx_hardintr(v)
|
|
void *v;
|
|
{
|
|
int i, rv = 0;
|
|
u_char ack;
|
|
|
|
DPRINTF(CDD_INTR, ("cd18xx_hardintr (ndevs %d):\n", clcd_cd.cd_ndevs));
|
|
for (i = 0; i < clcd_cd.cd_ndevs; i++)
|
|
{
|
|
struct cd18xx_softc *sc = clcd_cd.cd_devs[i];
|
|
int status, ns = 0;
|
|
int count = 1; /* process only 1 interrupts at a time for now */
|
|
|
|
if (sc == NULL)
|
|
continue;
|
|
|
|
DPRINTF(CDD_INTR, ("%s:", sc->sc_dev.dv_xname));
|
|
while (count-- &&
|
|
(status = (cd18xx_read(sc, CD18xx_SRSR) &
|
|
CD18xx_SRSR_PENDING))) {
|
|
rv = 1;
|
|
|
|
DPRINTF(CDD_INTR, (" status %x:", status));
|
|
if (ISSET(status, CD18xx_SRSR_RxPEND)) {
|
|
ack = (*sc->sc_ackfunc)(sc->sc_ackfunc_arg,
|
|
CD18xx_INTRACK_RxINT);
|
|
DPRINTF(CDD_INTR, (" rx: ack1 %x\n", ack));
|
|
cd18xx_rint(sc, &ns);
|
|
}
|
|
if (ISSET(status, CD18xx_SRSR_TxPEND)) {
|
|
ack = (*sc->sc_ackfunc)(sc->sc_ackfunc_arg,
|
|
CD18xx_INTRACK_TxINT);
|
|
DPRINTF(CDD_INTR, (" tx: ack1 %x\n", ack));
|
|
cd18xx_tint(sc, &ns);
|
|
|
|
}
|
|
if (ISSET(status, CD18xx_SRSR_MxPEND)) {
|
|
ack = (*sc->sc_ackfunc)(sc->sc_ackfunc_arg,
|
|
CD18xx_INTRACK_MxINT);
|
|
DPRINTF(CDD_INTR, (" mx: ack1 %x\n", ack));
|
|
cd18xx_mint(sc, &ns);
|
|
}
|
|
}
|
|
if (ns)
|
|
softintr_schedule(sc->sc_si);
|
|
}
|
|
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* software interrupt
|
|
*/
|
|
|
|
void
|
|
cdtty_rxsoft(sc, p, tp)
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *p;
|
|
struct tty *tp;
|
|
{
|
|
u_char *get, *end;
|
|
u_int cc, scc;
|
|
u_char rcsr;
|
|
int code;
|
|
int s;
|
|
|
|
end = p->p_ebuf;
|
|
get = p->p_rbget;
|
|
scc = cc = cdtty_rbuf_size - p->p_rbavail;
|
|
|
|
if (cc == cdtty_rbuf_size) {
|
|
p->p_floods++;
|
|
#if 0
|
|
if (p->p_errors++ == 0)
|
|
callout_reset(&p->p_diag_callout, 60 * hz,
|
|
cdttydiag, p);
|
|
#endif
|
|
}
|
|
|
|
while (cc) {
|
|
code = get[0];
|
|
rcsr = get[1];
|
|
if (ISSET(rcsr, CD18xx_RCSR_OVERRUNERR | CD18xx_RCSR_BREAK |
|
|
CD18xx_RCSR_FRAMERR | CD18xx_RCSR_PARITYERR)) {
|
|
if (ISSET(rcsr, CD18xx_RCSR_OVERRUNERR)) {
|
|
p->p_overflows++;
|
|
#if 0
|
|
if (p->p_errors++ == 0)
|
|
callout_reset(&p->p_diag_callout,
|
|
60 * hz, cdttydiag, p);
|
|
#endif
|
|
}
|
|
if (ISSET(rcsr, CD18xx_RCSR_BREAK|CD18xx_RCSR_FRAMERR))
|
|
SET(code, TTY_FE);
|
|
if (ISSET(rcsr, CD18xx_RCSR_PARITYERR))
|
|
SET(code, TTY_PE);
|
|
}
|
|
if ((*tp->t_linesw->l_rint)(code, tp) == -1) {
|
|
/*
|
|
* The line discipline's buffer is out of space.
|
|
*/
|
|
if (!ISSET(p->p_rx_flags, RX_TTY_BLOCKED)) {
|
|
/*
|
|
* We're either not using flow control, or the
|
|
* line discipline didn't tell us to block for
|
|
* some reason. Either way, we have no way to
|
|
* know when there's more space available, so
|
|
* just drop the rest of the data.
|
|
*/
|
|
get += cc << 1;
|
|
if (get >= end)
|
|
get -= cdtty_rbuf_size << 1;
|
|
cc = 0;
|
|
} else {
|
|
/*
|
|
* Don't schedule any more receive processing
|
|
* until the line discipline tells us there's
|
|
* space available (through cdttyhwiflow()).
|
|
* Leave the rest of the data in the input
|
|
* buffer.
|
|
*/
|
|
SET(p->p_rx_flags, RX_TTY_OVERFLOWED);
|
|
}
|
|
break;
|
|
}
|
|
get += 2;
|
|
if (get >= end)
|
|
get = p->p_rbuf;
|
|
cc--;
|
|
}
|
|
|
|
if (cc != scc) {
|
|
p->p_rbget = get;
|
|
s = splserial();
|
|
|
|
cc = p->p_rbavail += scc - cc;
|
|
/* Buffers should be ok again, release possible block. */
|
|
if (cc >= p->p_r_lowat) {
|
|
if (ISSET(p->p_rx_flags, RX_IBUF_OVERFLOWED)) {
|
|
CLR(p->p_rx_flags, RX_IBUF_OVERFLOWED);
|
|
cd18xx_set_car(sc, CD18XX_CHANNEL(tp->t_dev));
|
|
SET(p->p_srer, CD18xx_SRER_Rx |
|
|
CD18xx_SRER_RxSC |
|
|
CD18xx_SRER_CD);
|
|
cd18xx_write(sc, CD18xx_SRER, p->p_srer);
|
|
}
|
|
if (ISSET(p->p_rx_flags, RX_IBUF_BLOCKED)) {
|
|
CLR(p->p_rx_flags, RX_IBUF_BLOCKED);
|
|
cdtty_hwiflow(sc, p);
|
|
}
|
|
}
|
|
splx(s);
|
|
}
|
|
}
|
|
|
|
void
|
|
cdtty_txsoft(sc, p, tp)
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *p;
|
|
struct tty *tp;
|
|
{
|
|
|
|
CLR(tp->t_state, TS_BUSY);
|
|
if (ISSET(tp->t_state, TS_FLUSH))
|
|
CLR(tp->t_state, TS_FLUSH);
|
|
else
|
|
ndflush(&tp->t_outq, (int)(p->p_tba - tp->t_outq.c_cf));
|
|
(*tp->t_linesw->l_start)(tp);
|
|
}
|
|
|
|
void
|
|
cdtty_stsoft(sc, p, tp)
|
|
struct cd18xx_softc *sc;
|
|
struct cdtty_port *p;
|
|
struct tty *tp;
|
|
{
|
|
u_char msvr, delta;
|
|
int s;
|
|
|
|
s = splserial();
|
|
msvr = p->p_msvr;
|
|
delta = p->p_msvr_delta;
|
|
p->p_msvr_delta = 0;
|
|
splx(s);
|
|
|
|
if (ISSET(delta, p->p_msvr_dcd)) {
|
|
/*
|
|
* Inform the tty layer that carrier detect changed.
|
|
*/
|
|
(void) (*tp->t_linesw->l_modem)(tp, ISSET(msvr, CD18xx_MSVR_CD));
|
|
}
|
|
|
|
if (ISSET(delta, p->p_msvr_cts)) {
|
|
/* Block or unblock output according to flow control. */
|
|
if (ISSET(msvr, p->p_msvr_cts)) {
|
|
p->p_tx_stopped = 0;
|
|
(*tp->t_linesw->l_start)(tp);
|
|
} else {
|
|
p->p_tx_stopped = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
cd18xx_softintr(v)
|
|
void *v;
|
|
{
|
|
struct cd18xx_softc *sc = v;
|
|
struct cdtty_port *p;
|
|
struct tty *tp;
|
|
int i;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
p = &sc->sc_ports[i];
|
|
|
|
tp = p->p_tty;
|
|
if (tp == NULL)
|
|
continue;
|
|
if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0)
|
|
continue;
|
|
|
|
if (p->p_rx_ready) {
|
|
p->p_rx_ready = 0;
|
|
cdtty_rxsoft(sc, p, tp);
|
|
}
|
|
|
|
if (p->p_st_check) {
|
|
p->p_st_check = 0;
|
|
cdtty_stsoft(sc, p, tp);
|
|
}
|
|
|
|
if (p->p_tx_done) {
|
|
p->p_tx_done = 0;
|
|
cdtty_txsoft(sc, p, tp);
|
|
}
|
|
}
|
|
}
|