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/*-
* Copyright (c) 2003 John Baldwin <jhb@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. Neither the name of the author nor the names of any co-contributors
* may 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.
*/
/*
* Host to PCI and PCI to PCI bridge drivers that use the MP Table to route
* interrupts from PCI devices to I/O APICs.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcib_private.h>
#include <machine/legacyvar.h>
#include <machine/mptable.h>
#include <machine/pci_cfgreg.h>
#include "pcib_if.h"
/* Host to PCI bridge driver. */
static int
mptable_hostb_probe(device_t dev)
{
if (pci_cfgregopen() == 0)
return (ENXIO);
if (mptable_pci_probe_table(pcib_get_bus(dev)) != 0)
return (ENXIO);
device_set_desc(dev, "MPTable Host-PCI bridge");
return (0);
}
static int
mptable_hostb_attach(device_t dev)
{
device_add_child(dev, "pci", pcib_get_bus(dev));
return (bus_generic_attach(dev));
}
/* Pass MSI requests up to the nexus. */
static int
mptable_hostb_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
int *irqs)
{
device_t bus;
bus = device_get_parent(pcib);
return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
irqs));
}
static int
mptable_hostb_alloc_msix(device_t pcib, device_t dev, int *irq)
{
device_t bus;
bus = device_get_parent(pcib);
return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
}
static int
mptable_hostb_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
uint32_t *data)
{
device_t bus;
bus = device_get_parent(pcib);
return (PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data));
}
static device_method_t mptable_hostb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mptable_hostb_probe),
DEVMETHOD(device_attach, mptable_hostb_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
/* pcib interface */
DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots),
DEVMETHOD(pcib_read_config, legacy_pcib_read_config),
DEVMETHOD(pcib_write_config, legacy_pcib_write_config),
DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
DEVMETHOD(pcib_alloc_msi, mptable_hostb_alloc_msi),
DEVMETHOD(pcib_release_msi, pcib_release_msi),
DEVMETHOD(pcib_alloc_msix, mptable_hostb_alloc_msix),
DEVMETHOD(pcib_release_msix, pcib_release_msix),
DEVMETHOD(pcib_map_msi, mptable_hostb_map_msi),
{ 0, 0 }
};
static devclass_t hostb_devclass;
DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods, 1);
DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, hostb_devclass, 0, 0);
/* PCI to PCI bridge driver. */
static int
mptable_pcib_probe(device_t dev)
{
int bus;
if ((pci_get_class(dev) != PCIC_BRIDGE) ||
(pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
return (ENXIO);
bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
if (bus == 0)
return (ENXIO);
if (mptable_pci_probe_table(bus) != 0)
return (ENXIO);
device_set_desc(dev, "MPTable PCI-PCI bridge");
return (-1000);
}
static device_method_t mptable_pcib_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mptable_pcib_probe),
DEVMETHOD(device_attach, pcib_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, pcib_read_ivar),
DEVMETHOD(bus_write_ivar, pcib_write_ivar),
DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
/* pcib interface */
DEVMETHOD(pcib_maxslots, pcib_maxslots),
DEVMETHOD(pcib_read_config, pcib_read_config),
DEVMETHOD(pcib_write_config, pcib_write_config),
DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi),
DEVMETHOD(pcib_release_msi, pcib_release_msi),
DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix),
DEVMETHOD(pcib_release_msix, pcib_release_msix),
DEVMETHOD(pcib_map_msi, pcib_map_msi),
{0, 0}
};
static devclass_t pcib_devclass;
DEFINE_CLASS_0(pcib, mptable_pcib_driver, mptable_pcib_pci_methods,
sizeof(struct pcib_softc));
DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);
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