167 lines
4.3 KiB
C
167 lines
4.3 KiB
C
/*
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* Copyright (c) 2013 Roger Pau Monné <roger.pau@citrix.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/smp.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <dev/acpica/acpivar.h>
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#include <x86/init.h>
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#include <machine/nexusvar.h>
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#include <machine/intr_machdep.h>
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#include <xen/xen-os.h>
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#include <xen/xen_intr.h>
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#include <xen/xen_msi.h>
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#include "pcib_if.h"
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/*
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* Xen nexus(4) driver.
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*/
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static int
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nexus_xen_probe(device_t dev)
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{
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if (!xen_pv_domain())
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return (ENXIO);
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return (BUS_PROBE_SPECIFIC);
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}
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static int
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nexus_xen_attach(device_t dev)
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{
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int error;
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device_t acpi_dev = NULL;
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nexus_init_resources();
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bus_generic_probe(dev);
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if (xen_initial_domain()) {
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/* Disable some ACPI devices that are not usable by Dom0 */
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acpi_cpu_disabled = true;
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acpi_hpet_disabled = true;
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acpi_timer_disabled = true;
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acpi_dev = BUS_ADD_CHILD(dev, 10, "acpi", 0);
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if (acpi_dev == NULL)
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panic("Unable to add ACPI bus to Xen Dom0");
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}
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error = bus_generic_attach(dev);
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if (xen_initial_domain() && (error == 0))
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acpi_install_wakeup_handler(device_get_softc(acpi_dev));
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return (error);
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}
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static int
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nexus_xen_config_intr(device_t dev, int irq, enum intr_trigger trig,
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enum intr_polarity pol)
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{
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int ret;
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/*
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* ISA and PCI intline IRQs are not preregistered on Xen, so
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* intercept calls to configure those and register them on the fly.
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*/
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if ((irq < first_msi_irq) && (intr_lookup_source(irq) == NULL)) {
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ret = xen_register_pirq(irq, trig, pol);
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if (ret != 0)
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return (ret);
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nexus_add_irq(irq);
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}
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return (intr_config_intr(irq, trig, pol));
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}
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static int
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nexus_xen_alloc_msix(device_t pcib, device_t dev, int *irq)
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{
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return (xen_msix_alloc(dev, irq));
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}
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static int
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nexus_xen_release_msix(device_t pcib, device_t dev, int irq)
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{
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return (xen_msix_release(irq));
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}
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static int
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nexus_xen_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, int *irqs)
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{
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return (xen_msi_alloc(dev, count, maxcount, irqs));
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}
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static int
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nexus_xen_release_msi(device_t pcib, device_t dev, int count, int *irqs)
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{
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return (xen_msi_release(irqs, count));
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}
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static int
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nexus_xen_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, uint32_t *data)
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{
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return (xen_msi_map(irq, addr, data));
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}
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static device_method_t nexus_xen_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, nexus_xen_probe),
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DEVMETHOD(device_attach, nexus_xen_attach),
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/* INTR */
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DEVMETHOD(bus_config_intr, nexus_xen_config_intr),
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/* MSI */
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DEVMETHOD(pcib_alloc_msi, nexus_xen_alloc_msi),
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DEVMETHOD(pcib_release_msi, nexus_xen_release_msi),
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DEVMETHOD(pcib_alloc_msix, nexus_xen_alloc_msix),
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DEVMETHOD(pcib_release_msix, nexus_xen_release_msix),
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DEVMETHOD(pcib_map_msi, nexus_xen_map_msi),
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{ 0, 0 }
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};
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DEFINE_CLASS_1(nexus, nexus_xen_driver, nexus_xen_methods, 1, nexus_driver);
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static devclass_t nexus_devclass;
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DRIVER_MODULE(nexus_xen, root, nexus_xen_driver, nexus_devclass, 0, 0);
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