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- /*
- * Copyright (c) 2013 Roger Pau Monné <roger.pau@citrix.com>
- * 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.
- *
- * 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.
- */
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #include <sys/param.h>
- #include <sys/bus.h>
- #include <sys/kernel.h>
- #include <sys/module.h>
- #include <sys/sysctl.h>
- #include <sys/systm.h>
- #include <sys/smp.h>
- #include <contrib/dev/acpica/include/acpi.h>
- #include <dev/acpica/acpivar.h>
- #include <x86/init.h>
- #include <machine/nexusvar.h>
- #include <machine/intr_machdep.h>
- #include <xen/xen-os.h>
- #include <xen/xen_intr.h>
- #include <xen/xen_msi.h>
- #include "pcib_if.h"
- /*
- * Xen nexus(4) driver.
- */
- static int
- nexus_xen_probe(device_t dev)
- {
- if (!xen_pv_domain())
- return (ENXIO);
- return (BUS_PROBE_SPECIFIC);
- }
- static int
- nexus_xen_attach(device_t dev)
- {
- int error;
- device_t acpi_dev = NULL;
- nexus_init_resources();
- bus_generic_probe(dev);
- if (xen_initial_domain()) {
- /* Disable some ACPI devices that are not usable by Dom0 */
- acpi_cpu_disabled = true;
- acpi_hpet_disabled = true;
- acpi_timer_disabled = true;
- acpi_dev = BUS_ADD_CHILD(dev, 10, "acpi", 0);
- if (acpi_dev == NULL)
- panic("Unable to add ACPI bus to Xen Dom0");
- }
- error = bus_generic_attach(dev);
- if (xen_initial_domain() && (error == 0))
- acpi_install_wakeup_handler(device_get_softc(acpi_dev));
- return (error);
- }
- static int
- nexus_xen_config_intr(device_t dev, int irq, enum intr_trigger trig,
- enum intr_polarity pol)
- {
- int ret;
- /*
- * ISA and PCI intline IRQs are not preregistered on Xen, so
- * intercept calls to configure those and register them on the fly.
- */
- if ((irq < first_msi_irq) && (intr_lookup_source(irq) == NULL)) {
- ret = xen_register_pirq(irq, trig, pol);
- if (ret != 0)
- return (ret);
- nexus_add_irq(irq);
- }
- return (intr_config_intr(irq, trig, pol));
- }
- static int
- nexus_xen_alloc_msix(device_t pcib, device_t dev, int *irq)
- {
- return (xen_msix_alloc(dev, irq));
- }
- static int
- nexus_xen_release_msix(device_t pcib, device_t dev, int irq)
- {
- return (xen_msix_release(irq));
- }
- static int
- nexus_xen_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, int *irqs)
- {
- return (xen_msi_alloc(dev, count, maxcount, irqs));
- }
- static int
- nexus_xen_release_msi(device_t pcib, device_t dev, int count, int *irqs)
- {
- return (xen_msi_release(irqs, count));
- }
- static int
- nexus_xen_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, uint32_t *data)
- {
- return (xen_msi_map(irq, addr, data));
- }
- static device_method_t nexus_xen_methods[] = {
- /* Device interface */
- DEVMETHOD(device_probe, nexus_xen_probe),
- DEVMETHOD(device_attach, nexus_xen_attach),
- /* INTR */
- DEVMETHOD(bus_config_intr, nexus_xen_config_intr),
- /* MSI */
- DEVMETHOD(pcib_alloc_msi, nexus_xen_alloc_msi),
- DEVMETHOD(pcib_release_msi, nexus_xen_release_msi),
- DEVMETHOD(pcib_alloc_msix, nexus_xen_alloc_msix),
- DEVMETHOD(pcib_release_msix, nexus_xen_release_msix),
- DEVMETHOD(pcib_map_msi, nexus_xen_map_msi),
- { 0, 0 }
- };
- DEFINE_CLASS_1(nexus, nexus_xen_driver, nexus_xen_methods, 1, nexus_driver);
- static devclass_t nexus_devclass;
- DRIVER_MODULE(nexus_xen, root, nexus_xen_driver, nexus_devclass, 0, 0);
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