NetBSD/sys/dev/pci/com_puc.c

128 lines
4.1 KiB
C

/* $NetBSD: com_puc.c,v 1.1 1998/06/26 18:52:41 cgd Exp $ */
/*
* Copyright (c) 1998 Christopher G. Demetriou. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Machine-independent ns16x50 serial port ('com') driver attachment to
* "PCI Universal Communications" controller driver.
*
* Author: Christopher G. Demetriou, May 17, 1998.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/tty.h>
#include <machine/bus.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pucvar.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
struct com_puc_softc {
struct com_softc sc_com; /* real "com" softc */
/* puc-specific goo. */
void *sc_ih; /* interrupt handler */
};
int com_puc_probe __P((struct device *, struct cfdata *, void *));
void com_puc_attach __P((struct device *, struct device *, void *));
struct cfattach com_puc_ca = {
sizeof(struct com_puc_softc), com_puc_probe, com_puc_attach
};
int
com_puc_probe(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct puc_attach_args *aa = aux;
/*
* Locators already matched, just check the type.
*/
if (aa->type != PUC_PORT_TYPE_COM)
return (0);
return (1);
}
void
com_puc_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct com_puc_softc *psc = (void *)self;
struct com_softc *sc = &psc->sc_com;
struct puc_attach_args *aa = aux;
const char *intrstr;
/*
* XXX This driver assumes that 'com' ports attached to 'puc'
* XXX can not be console. That isn't unreasonable, because PCI
* XXX devices are supposed to be dynamically mapped, and com
* XXX console ports want fixed addresses. When/if baseboard
* XXX 'com' ports are identified as PCI/communications/serial
* XXX devices and are known to be mapped at the standard
* XXX addresses, if they can be the system console then we have
* XXX to cope with doing the mapping right. Then this will get
* XXX really ugly. Of course, by then we might know the real
* XXX definition of PCI/communications/serial, and attach 'com'
* XXX directly on PCI.
*/
sc->sc_iobase = aa->a;
sc->sc_iot = aa->t;
sc->sc_ioh = aa->h;
sc->sc_frequency = COM_FREQ;
intrstr = pci_intr_string(aa->pc, aa->intrhandle);
psc->sc_ih = pci_intr_establish(aa->pc, aa->intrhandle, IPL_SERIAL,
comintr, sc);
if (psc->sc_ih == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
printf(": interrupting at %s\n", intrstr);
printf("%s", sc->sc_dev.dv_xname);
com_attach_subr(sc);
}