268 lines
6.6 KiB
C
268 lines
6.6 KiB
C
/* $NetBSD: pcib.c,v 1.10 2009/08/23 15:42:51 jmcneill Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.10 2009/08/23 15:42:51 jmcneill Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/isa/isavar.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcireg.h>
|
|
|
|
#include <dev/pci/pcidevs.h>
|
|
|
|
#include "isa.h"
|
|
#include "pcibvar.h"
|
|
|
|
int pcibmatch(device_t, cfdata_t, void *);
|
|
|
|
CFATTACH_DECL3_NEW(pcib, sizeof(struct pcib_softc),
|
|
pcibmatch, pcibattach, pcibdetach, NULL, pcibrescan, pcibchilddet,
|
|
DVF_DETACH_SHUTDOWN);
|
|
|
|
void pcib_callback(device_t);
|
|
|
|
int
|
|
pcibmatch(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
struct pci_attach_args *pa = aux;
|
|
|
|
#if 0
|
|
/*
|
|
* PCI-ISA bridges are matched on class/subclass.
|
|
* This list contains only the bridges where correct
|
|
* (or incorrect) behaviour is not yet confirmed.
|
|
*/
|
|
switch (PCI_VENDOR(pa->pa_id)) {
|
|
case PCI_VENDOR_INTEL:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_INTEL_82426EX:
|
|
case PCI_PRODUCT_INTEL_82380AB:
|
|
return (1);
|
|
}
|
|
break;
|
|
|
|
case PCI_VENDOR_UMC:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_UMC_UM8886F:
|
|
case PCI_PRODUCT_UMC_UM82C886:
|
|
return (1);
|
|
}
|
|
break;
|
|
case PCI_VENDOR_ALI:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_ALI_M1449:
|
|
case PCI_PRODUCT_ALI_M1543:
|
|
return (1);
|
|
}
|
|
break;
|
|
case PCI_VENDOR_COMPAQ:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_COMPAQ_PCI_ISA_BRIDGE:
|
|
return (1);
|
|
}
|
|
break;
|
|
case PCI_VENDOR_VIATECH:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_VIATECH_VT82C570MV:
|
|
case PCI_PRODUCT_VIATECH_VT82C586_ISA:
|
|
return (1);
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* some special cases:
|
|
*/
|
|
switch (PCI_VENDOR(pa->pa_id)) {
|
|
case PCI_VENDOR_INTEL:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_INTEL_SIO:
|
|
/*
|
|
* The Intel SIO identifies itself as a
|
|
* miscellaneous prehistoric.
|
|
*/
|
|
case PCI_PRODUCT_INTEL_82371MX:
|
|
/*
|
|
* The Intel 82371MX identifies itself erroneously as a
|
|
* miscellaneous bridge.
|
|
*/
|
|
case PCI_PRODUCT_INTEL_82371AB_ISA:
|
|
/*
|
|
* Some Intel 82371AB PCI-ISA bridge identifies
|
|
* itself as miscellaneous bridge.
|
|
*/
|
|
return (1);
|
|
}
|
|
break;
|
|
case PCI_VENDOR_SIS:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_SIS_85C503:
|
|
/*
|
|
* The SIS 85C503 identifies itself as a
|
|
* miscellaneous prehistoric.
|
|
*/
|
|
return (1);
|
|
}
|
|
break;
|
|
case PCI_VENDOR_VIATECH:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_VIATECH_VT82C686A_SMB:
|
|
/*
|
|
* The VIA VT82C686A SMBus Controller itself as
|
|
* ISA bridge, but it's wrong !
|
|
*/
|
|
return (0);
|
|
}
|
|
/*
|
|
* The Cyrix cs5530 PCI host bridge does not have a broken
|
|
* latch on the i8254 clock core, unlike its predecessors
|
|
* the cs5510 and cs5520. This reverses the setting from
|
|
* i386/i386/identcpu.c where it arguably should not have
|
|
* been set in the first place. XXX
|
|
*/
|
|
case PCI_VENDOR_CYRIX:
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_CYRIX_CX5530_PCIB:
|
|
#if !defined(XEN)
|
|
{
|
|
extern int clock_broken_latch;
|
|
|
|
clock_broken_latch = 0;
|
|
}
|
|
#endif
|
|
return(1);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
|
|
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) {
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
pcibattach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct pcib_softc *sc = device_private(self);
|
|
struct pci_attach_args *pa = aux;
|
|
char devinfo[256];
|
|
|
|
aprint_naive("\n");
|
|
|
|
/*
|
|
* Just print out a description and defer configuration
|
|
* until all PCI devices have been attached.
|
|
*/
|
|
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
|
|
aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
|
|
PCI_REVISION(pa->pa_class));
|
|
|
|
sc->sc_pc = pa->pa_pc;
|
|
sc->sc_tag = pa->pa_tag;
|
|
|
|
/* If a more specific pcib implementation has already registered a
|
|
* power handler, don't overwrite it.
|
|
*/
|
|
if (!device_pmf_is_registered(self)) {
|
|
if (!pmf_device_register(self, NULL, NULL))
|
|
aprint_error_dev(self, "couldn't establish power handler\n");
|
|
}
|
|
|
|
config_defer(self, pcib_callback);
|
|
}
|
|
|
|
int
|
|
pcibdetach(device_t self, int flags)
|
|
{
|
|
int rc;
|
|
|
|
if ((rc = config_detach_children(self, flags)) != 0)
|
|
return rc;
|
|
pmf_device_deregister(self);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
pcibchilddet(device_t self, device_t child)
|
|
{
|
|
struct pcib_softc *sc = device_private(self);
|
|
|
|
if (sc->sc_isabus == child)
|
|
sc->sc_isabus = NULL;
|
|
}
|
|
|
|
/* XXX share this with sys/arch/i386/pci/elan520.c */
|
|
static bool
|
|
ifattr_match(const char *snull, const char *t)
|
|
{
|
|
return (snull == NULL) || strcmp(snull, t) == 0;
|
|
}
|
|
|
|
int
|
|
pcibrescan(device_t self, const char *ifattr, const int *loc)
|
|
{
|
|
struct pcib_softc *sc = device_private(self);
|
|
struct isabus_attach_args iba;
|
|
|
|
if (ifattr_match(ifattr, "isabus") && sc->sc_isabus == NULL) {
|
|
/*
|
|
* Attach the ISA bus behind this bridge.
|
|
*/
|
|
memset(&iba, 0, sizeof(iba));
|
|
iba.iba_iot = X86_BUS_SPACE_IO;
|
|
iba.iba_memt = X86_BUS_SPACE_MEM;
|
|
#if NISA > 0
|
|
iba.iba_dmat = &isa_bus_dma_tag;
|
|
#endif
|
|
sc->sc_isabus =
|
|
config_found_ia(self, "isabus", &iba, isabusprint);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
pcib_callback(device_t self)
|
|
{
|
|
pcibrescan(self, "isabus", NULL);
|
|
}
|