226 lines
5.8 KiB
C
226 lines
5.8 KiB
C
/* $NetBSD: puccn.c,v 1.6 2003/06/14 17:01:06 thorpej Exp $ */
|
|
|
|
/*
|
|
* Derived from pci.c
|
|
* Copyright (c) 2000 Geocast Networks Systems. All rights reserved.
|
|
*
|
|
* Copyright (c) 1995, 1996, 1997, 1998
|
|
* Christopher G. Demetriou. All rights reserved.
|
|
* Copyright (c) 1994 Charles M. Hannum. 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 Charles M. Hannum.
|
|
* 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 support for PCI serial console support.
|
|
*
|
|
* Scan the PCI bus for something which resembles a 16550
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: puccn.c,v 1.6 2003/06/14 17:01:06 thorpej Exp $");
|
|
|
|
#include "opt_kgdb.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcidevs.h>
|
|
|
|
#include <sys/termios.h>
|
|
#include <dev/ic/comreg.h>
|
|
#include <dev/ic/comvar.h>
|
|
|
|
#include <dev/cons.h>
|
|
|
|
#include <dev/pci/pucvar.h>
|
|
#include <dev/pci/puccn.h>
|
|
|
|
#ifndef CONSPEED
|
|
#define CONSPEED TTYDEF_SPEED
|
|
#endif
|
|
#ifndef CONMODE
|
|
#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE|CSTOPB|PARENB))|CS8) /* 8N1 */
|
|
#endif
|
|
|
|
#ifdef i386 /* Handle i386 directly */
|
|
int
|
|
cpu_comcnprobe(struct consdev *cn, struct pci_attach_args *pa)
|
|
{
|
|
pci_mode_detect();
|
|
pa->pa_iot = X86_BUS_SPACE_IO;
|
|
pa->pa_pc = 0;
|
|
pa->pa_tag = pci_make_tag(0, 0, 31, 0);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
cons_decl(com);
|
|
|
|
static bus_addr_t puccnbase;
|
|
static bus_space_tag_t puctag;
|
|
|
|
#ifdef KGDB
|
|
static bus_addr_t pucgdbbase;
|
|
#endif
|
|
|
|
/*
|
|
* Static dev/func variables allow pucprobe to be called multiple times,
|
|
* resuming the search where it left off, never retrying the same adaptor.
|
|
*/
|
|
|
|
static bus_addr_t
|
|
pucprobe_doit(struct consdev *cn)
|
|
{
|
|
struct pci_attach_args pa;
|
|
int bus;
|
|
static int dev = 0, func = 0;
|
|
int maxdev, nfunctions, i;
|
|
pcireg_t reg, bhlcr, subsys;
|
|
int foundport = 0;
|
|
const struct puc_device_description *desc;
|
|
pcireg_t base;
|
|
|
|
/* Fetch our tags */
|
|
if (cpu_comcnprobe(cn, &pa) != 0) {
|
|
return 0;
|
|
}
|
|
puctag = pa.pa_iot;
|
|
pci_decompose_tag(pa.pa_pc, pa.pa_tag, &bus, &maxdev, NULL);
|
|
|
|
/* scan through devices */
|
|
|
|
for (; dev <= maxdev ; dev++) {
|
|
pa.pa_tag = pci_make_tag(pa.pa_pc, bus, dev, 0);
|
|
reg = pci_conf_read(pa.pa_pc, pa.pa_tag, PCI_ID_REG);
|
|
if (PCI_VENDOR(reg) == PCI_VENDOR_INVALID
|
|
|| PCI_VENDOR(reg) == 0)
|
|
continue;
|
|
bhlcr = pci_conf_read(pa.pa_pc, pa.pa_tag, PCI_BHLC_REG);
|
|
if (PCI_HDRTYPE_MULTIFN(bhlcr)) {
|
|
nfunctions = 8;
|
|
} else {
|
|
nfunctions = 1;
|
|
}
|
|
resume_scan:
|
|
for (; func < nfunctions; func++) {
|
|
pa.pa_tag = pci_make_tag(pa.pa_pc, bus, dev, func);
|
|
reg = pci_conf_read(pa.pa_pc, pa.pa_tag, PCI_CLASS_REG);
|
|
if (PCI_CLASS(reg) == PCI_CLASS_COMMUNICATIONS
|
|
&& PCI_SUBCLASS(reg)
|
|
== PCI_SUBCLASS_COMMUNICATIONS_SERIAL) {
|
|
pa.pa_id = pci_conf_read(pa.pa_pc, pa.pa_tag, PCI_ID_REG);
|
|
subsys = pci_conf_read(pa.pa_pc, pa.pa_tag,
|
|
PCI_SUBSYS_ID_REG);
|
|
foundport = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (foundport)
|
|
break;
|
|
|
|
func = 0;
|
|
}
|
|
if (!foundport)
|
|
return 0;
|
|
foundport = 0;
|
|
|
|
desc = puc_find_description(PCI_VENDOR(pa.pa_id),
|
|
PCI_PRODUCT(pa.pa_id), PCI_VENDOR(subsys), PCI_PRODUCT(subsys));
|
|
if (desc == NULL) {
|
|
func++;
|
|
goto resume_scan;
|
|
}
|
|
|
|
for (i = 0; PUC_PORT_VALID(desc, i); i++)
|
|
{
|
|
if (desc->ports[i].type != PUC_PORT_TYPE_COM)
|
|
continue;
|
|
base = pci_conf_read(pa.pa_pc, pa.pa_tag, desc->ports[i].bar);
|
|
base += desc->ports[i].offset;
|
|
|
|
if (PCI_MAPREG_TYPE(base) != PCI_MAPREG_TYPE_IO)
|
|
continue;
|
|
base = PCI_MAPREG_IO_ADDR(base);
|
|
if (com_is_console(puctag, base, NULL))
|
|
continue;
|
|
foundport = 1;
|
|
break;
|
|
}
|
|
|
|
if (foundport == 0) {
|
|
func++;
|
|
goto resume_scan;
|
|
}
|
|
|
|
cn->cn_pri = CN_REMOTE;
|
|
return PCI_MAPREG_IO_ADDR(base);
|
|
}
|
|
|
|
#ifdef KGDB
|
|
void comgdbprobe(struct consdev *);
|
|
void comgdbinit(struct consdev *);
|
|
|
|
void
|
|
comgdbprobe(struct consdev *cn)
|
|
{
|
|
pucgdbbase = pucprobe_doit(cn);
|
|
}
|
|
|
|
void
|
|
comgdbinit(struct consdev *cn)
|
|
{
|
|
if (pucgdbbase == 0) {
|
|
return;
|
|
}
|
|
com_kgdb_attach(puctag, pucgdbbase, CONSPEED, COM_FREQ,
|
|
COM_TYPE_NORMAL, CONMODE);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
comcnprobe(struct consdev *cn)
|
|
{
|
|
puccnbase = pucprobe_doit(cn);
|
|
}
|
|
|
|
void
|
|
comcninit(struct consdev *cn)
|
|
{
|
|
if (puccnbase == 0) {
|
|
return;
|
|
}
|
|
comcnattach(puctag, puccnbase, CONSPEED, COM_FREQ, COM_TYPE_NORMAL,
|
|
CONMODE);
|
|
}
|
|
|
|
/* comcngetc, comcnputc, comcnpollc provided by dev/ic/com.c */
|