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/*
* Copyright (c) 2014 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/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/pciio.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pci_private.h>
#include <xen/xen-os.h>
#include <xen/hypervisor.h>
#include <xen/xen_pci.h>
#include "pcib_if.h"
#include "pci_if.h"
void
xen_pci_enable_msi_method(device_t dev, device_t child, uint64_t address,
uint16_t data)
{
struct pci_devinfo *dinfo = device_get_ivars(child);
struct pcicfg_msi *msi = &dinfo->cfg.msi;
/* Enable MSI in the control register. */
msi->msi_ctrl |= PCIM_MSICTRL_MSI_ENABLE;
pci_write_config(child, msi->msi_location + PCIR_MSI_CTRL,
msi->msi_ctrl, 2);
}
void
xen_pci_disable_msi_method(device_t dev, device_t child)
{
struct pci_devinfo *dinfo = device_get_ivars(child);
struct pcicfg_msi *msi = &dinfo->cfg.msi;
msi->msi_ctrl &= ~PCIM_MSICTRL_MSI_ENABLE;
pci_write_config(child, msi->msi_location + PCIR_MSI_CTRL,
msi->msi_ctrl, 2);
}
void
xen_pci_child_added_method(device_t dev, device_t child)
{
struct pci_devinfo *dinfo;
struct physdev_pci_device_add add_pci;
int error;
dinfo = device_get_ivars(child);
KASSERT((dinfo != NULL),
("xen_pci_add_child_method called with NULL dinfo"));
bzero(&add_pci, sizeof(add_pci));
add_pci.seg = dinfo->cfg.domain;
add_pci.bus = dinfo->cfg.bus;
add_pci.devfn = (dinfo->cfg.slot << 3) | dinfo->cfg.func;
error = HYPERVISOR_physdev_op(PHYSDEVOP_pci_device_add, &add_pci);
if (error)
panic("unable to add device bus %u devfn %u error: %d\n",
add_pci.bus, add_pci.devfn, error);
}
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