NetBSD-5.0.2/sys/arch/powerpc/pci/pcib.c
/* $NetBSD: pcib.c,v 1.5 2008/05/04 00:18:16 martin 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 1.5 2008/05/04 00:18:16 martin 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 "isadma.h"
int pcibmatch(device_t, cfdata_t, void *);
void pcibattach(device_t, device_t, void *);
struct pcib_softc {
device_t sc_dev;
struct powerpc_isa_chipset *sc_chipset;
};
extern struct powerpc_isa_chipset genppc_ict;
extern struct genppc_pci_chipset *genppc_pct;
CFATTACH_DECL_NEW(pcib, sizeof(struct pcib_softc),
pcibmatch, pcibattach, NULL, NULL);
void pcib_callback(device_t);
int
pcibmatch(device_t parent, cfdata_t cf, void *aux)
{
struct pci_attach_args *pa = aux;
/*
* Match PCI-ISA bridge.
*/
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) {
return (1);
}
/*
* 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.
*/
return (1);
}
break;
}
return (0);
}
void
pcibattach(device_t parent, device_t self, void *aux)
{
struct pci_attach_args *pa = aux;
struct pcib_softc *sc = device_private(self);
char devinfo[256];
u_int32_t v;
int lvlmask = 0;
#ifdef prep
prop_bool_t rav;
#endif
sc->sc_dev = self;
/*
* 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));
v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x40);
if ((v & 0x20) == 0) {
aprint_verbose("%s: PIRQ[0-3] not used\n", self->dv_xname);
} else {
v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x60);
if ((v & 0x80808080) == 0x80808080) {
aprint_verbose("%s: PIRQ[0-3] disabled\n",
self->dv_xname);
} else {
int i;
aprint_verbose("%s:", device_xname(self));
for (i = 0; i < 4; i++, v >>= 8) {
if ((v & 0x80) == 0 && (v & 0x0f) != 0) {
aprint_verbose(" PIRQ[%d]=%d", i,
v & 0x0f);
lvlmask |= (1 << (v & 0x0f));
}
}
aprint_verbose("\n");
}
}
/*
* If we have an 83C553F-G sitting on a RAVEN host bridge,
* then we need to rewire some interrupts.
* The IDE Interrupt Routing Control Register lives at 0x43,
* and defaults to 0xEF, which means the primary controller
* interrupts on ivr-14, and the secondary on ivr-15. We
* reset it to 0xEE to fire them both at ivr-14.
* We have to rewrite the interrupt map, because the bridge map told
* us that the interrupt is MPIC 0, which is the bridge intr for
* the 8259.
* Additionally, sometimes the PCI Interrupt Routing Control Register
* is improperly initialized, causing all sorts of wierd interrupt
* issues on the machine. The manual says it should default to
* 0000h (index 45-44h) however it would appear that PPCBUG is
* setting it up differently. Reset it to 0000h.
*/
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SYMPHONY &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SYMPHONY_83C553) {
v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x44) & 0xffff0000;
pci_conf_write(pa->pa_pc, pa->pa_tag, 0x44, v);
}
#ifdef prep
rav = prop_dictionary_get(device_properties(parent),
"prep-raven-pchb");
if (rav != NULL && prop_bool_true(rav) &&
PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SYMPHONY &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SYMPHONY_83C553) {
prop_dictionary_t dict, devsub;
prop_number_t pinsub;
struct genppc_pci_chipset_businfo *pbi;
v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x40) & 0x00ffffff;
v |= 0xee000000;
pci_conf_write(pa->pa_pc, pa->pa_tag, 0x40, v);
pbi = SIMPLEQ_FIRST(&genppc_pct->pc_pbi);
dict = prop_dictionary_get(pbi->pbi_properties,
"prep-pci-intrmap");
devsub = prop_dictionary_get(dict, "devfunc-11");
pinsub = prop_number_create_integer(14);
prop_dictionary_set(devsub, "pin-A", pinsub);
prop_object_release(pinsub);
aprint_verbose_dev(self, "setting pciide irq to 14\n");
/* irq 14 is level */
lvlmask = 0x0040;
}
#endif /* prep */
config_defer(self, pcib_callback);
}
void
pcib_callback(device_t self)
{
struct pcib_softc *sc = device_private(self);
#if NISA > 0
struct isabus_attach_args iba;
/*
* Attach the ISA bus behind this bridge.
*/
memset(&iba, 0, sizeof(iba));
sc->sc_chipset = &genppc_ict;
iba.iba_ic = sc->sc_chipset;
iba.iba_iot = &genppc_isa_io_space_tag;
iba.iba_memt = &genppc_isa_mem_space_tag;
#if NISADMA > 0
iba.iba_dmat = &isa_bus_dma_tag;
#endif
config_found_ia(sc->sc_dev, "isabus", &iba, isabusprint);
#endif
}