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/*-
* Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
* Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
* Copyright (c) 2000 BSDi
* Copyright (c) 2001 - 2003 Thomas Moestl <tmm@FreeBSD.org>
* Copyright (c) 2009 by Marius Strobl <marius@FreeBSD.org>
* 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. 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 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 AUTHOR 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.
*
* from: FreeBSD: src/sys/dev/pci/pci_pci.c,v 1.3 2000/12/13
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ofw_pci.h"
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/libkern.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcib_private.h>
#include "pcib_if.h"
#include <sparc64/pci/ofw_pci.h>
#include <sparc64/pci/ofw_pcib_subr.h>
#define PCI_DEVID_ALI_M5249 0x524910b9
#define PCI_VENDOR_PLX 0x10b5
static device_probe_t ofw_pcib_probe;
static device_attach_t ofw_pcib_attach;
static ofw_pci_setup_device_t ofw_pcib_setup_device;
static device_method_t ofw_pcib_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ofw_pcib_probe),
DEVMETHOD(device_attach, ofw_pcib_attach),
/* Bus interface */
/* pcib interface */
DEVMETHOD(pcib_route_interrupt, ofw_pcib_gen_route_interrupt),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_node, ofw_pcib_gen_get_node),
DEVMETHOD(ofw_pci_setup_device, ofw_pcib_setup_device),
DEVMETHOD_END
};
static devclass_t pcib_devclass;
DEFINE_CLASS_1(pcib, ofw_pcib_driver, ofw_pcib_methods,
sizeof(struct ofw_pcib_gen_softc), pcib_driver);
EARLY_DRIVER_MODULE(ofw_pcib, pci, ofw_pcib_driver, pcib_devclass, NULL, NULL,
BUS_PASS_BUS);
MODULE_DEPEND(ofw_pcib, pci, 1, 1, 1);
static int
ofw_pcib_probe(device_t dev)
{
char desc[sizeof("OFW PCIe-PCIe bridge")];
const char *dtype, *pbdtype;
#define ISDTYPE(dtype, type) \
(((dtype) != NULL) && strcmp((dtype), (type)) == 0)
if ((pci_get_class(dev) == PCIC_BRIDGE) &&
(pci_get_subclass(dev) == PCIS_BRIDGE_PCI) &&
ofw_bus_get_node(dev) != 0) {
dtype = ofw_bus_get_type(dev);
pbdtype = ofw_bus_get_type(device_get_parent(
device_get_parent(dev)));
snprintf(desc, sizeof(desc), "OFW PCI%s-PCI%s bridge",
ISDTYPE(pbdtype, OFW_TYPE_PCIE) ? "e" : "",
ISDTYPE(dtype, OFW_TYPE_PCIE) ? "e" : "");
device_set_desc_copy(dev, desc);
return (BUS_PROBE_DEFAULT);
}
#undef ISDTYPE
return (ENXIO);
}
static int
ofw_pcib_attach(device_t dev)
{
struct ofw_pcib_gen_softc *sc;
sc = device_get_softc(dev);
switch (pci_get_devid(dev)) {
/*
* The ALi M5249 found in Fire-based machines by definition must me
* subtractive as they have a ISA bridge on their secondary side but
* don't indicate this in the class code although the ISA I/O range
* isn't included in their bridge decode.
*/
case PCI_DEVID_ALI_M5249:
sc->ops_pcib_sc.flags |= PCIB_SUBTRACTIVE;
break;
}
switch (pci_get_vendor(dev)) {
/*
* Concurrently write the primary and secondary bus numbers in order
* to work around a bug in PLX PEX 8114 causing the internal shadow
* copies of these not to be updated when setting them bytewise.
*/
case PCI_VENDOR_PLX:
pci_write_config(dev, PCIR_PRIBUS_1,
pci_read_config(dev, PCIR_SECBUS_1, 1) << 8 |
pci_read_config(dev, PCIR_PRIBUS_1, 1), 2);
break;
}
ofw_pcib_gen_setup(dev);
pcib_attach_common(dev);
device_add_child(dev, "pci", -1);
return (bus_generic_attach(dev));
}
static void
ofw_pcib_setup_device(device_t bus, device_t child)
{
int i;
uint16_t reg;
switch (pci_get_vendor(bus)) {
/*
* For PLX PEX 8532 issue 64 TLPs to the child from the downstream
* port to the child device in order to work around a hardware bug.
*/
case PCI_VENDOR_PLX:
for (i = 0, reg = 0; i < 64; i++)
reg |= pci_get_devid(child);
break;
}
OFW_PCI_SETUP_DEVICE(device_get_parent(bus), child);
}
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