freebsd-dev/sys/arm64/cavium/thunder_pcie_pem_fdt.c
2017-03-16 17:49:37 +00:00

202 lines
5.6 KiB
C

/*
* Copyright (C) 2016 Cavium Inc.
* All rights reserved.
*
* Developed by Semihalf.
*
* 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 "opt_platform.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/kernel.h>
#include <sys/rman.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/cpuset.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcib_private.h>
#include <dev/pci/pci_host_generic.h>
#include <machine/intr.h>
#include "thunder_pcie_common.h"
#include "thunder_pcie_pem.h"
#include "pcib_if.h"
static int thunder_pem_fdt_probe(device_t);
static int thunder_pem_fdt_alloc_msix(device_t, device_t, int *);
static int thunder_pem_fdt_release_msix(device_t, device_t, int);
static int thunder_pem_fdt_alloc_msi(device_t, device_t, int, int, int *);
static int thunder_pem_fdt_release_msi(device_t, device_t, int, int *);
static int thunder_pem_fdt_map_msi(device_t, device_t, int, uint64_t *,
uint32_t *);
static int thunder_pem_fdt_get_id(device_t, device_t, enum pci_id_type,
uintptr_t *);
static device_method_t thunder_pem_fdt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, thunder_pem_fdt_probe),
/* pcib interface */
DEVMETHOD(pcib_alloc_msix, thunder_pem_fdt_alloc_msix),
DEVMETHOD(pcib_release_msix, thunder_pem_fdt_release_msix),
DEVMETHOD(pcib_alloc_msi, thunder_pem_fdt_alloc_msi),
DEVMETHOD(pcib_release_msi, thunder_pem_fdt_release_msi),
DEVMETHOD(pcib_map_msi, thunder_pem_fdt_map_msi),
DEVMETHOD(pcib_get_id, thunder_pem_fdt_get_id),
/* End */
DEVMETHOD_END
};
DEFINE_CLASS_1(pcib, thunder_pem_fdt_driver, thunder_pem_fdt_methods,
sizeof(struct thunder_pem_softc), thunder_pem_driver);
static devclass_t thunder_pem_fdt_devclass;
DRIVER_MODULE(thunder_pem, simplebus, thunder_pem_fdt_driver,
thunder_pem_fdt_devclass, 0, 0);
DRIVER_MODULE(thunder_pem, ofwbus, thunder_pem_fdt_driver,
thunder_pem_fdt_devclass, 0, 0);
static int
thunder_pem_fdt_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (ofw_bus_is_compatible(dev, "cavium,pci-host-thunder-pem")) {
device_set_desc(dev, THUNDER_PEM_DESC);
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
thunder_pem_fdt_alloc_msi(device_t pci, device_t child, int count, int maxcount,
int *irqs)
{
phandle_t msi_parent;
int err;
err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child),
&msi_parent, NULL);
if (err != 0)
return (err);
return (intr_alloc_msi(pci, child, msi_parent, count, maxcount,
irqs));
}
static int
thunder_pem_fdt_release_msi(device_t pci, device_t child, int count, int *irqs)
{
phandle_t msi_parent;
int err;
err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child),
&msi_parent, NULL);
if (err != 0)
return (err);
return (intr_release_msi(pci, child, msi_parent, count, irqs));
}
static int
thunder_pem_fdt_alloc_msix(device_t pci, device_t child, int *irq)
{
phandle_t msi_parent;
int err;
err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child),
&msi_parent, NULL);
if (err != 0)
return (err);
return (intr_alloc_msix(pci, child, msi_parent, irq));
}
static int
thunder_pem_fdt_release_msix(device_t pci, device_t child, int irq)
{
phandle_t msi_parent;
int err;
err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child),
&msi_parent, NULL);
if (err != 0)
return (err);
return (intr_release_msix(pci, child, msi_parent, irq));
}
static int
thunder_pem_fdt_map_msi(device_t pci, device_t child, int irq, uint64_t *addr,
uint32_t *data)
{
phandle_t msi_parent;
int err;
err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child),
&msi_parent, NULL);
if (err != 0)
return (err);
return (intr_map_msi(pci, child, msi_parent, irq, addr, data));
}
static int
thunder_pem_fdt_get_id(device_t dev, device_t child, enum pci_id_type type,
uintptr_t *id)
{
phandle_t node;
int err;
uint32_t rid;
uint16_t pci_rid;
if (type != PCI_ID_MSI)
return (pcib_get_id(dev, child, type, id));
node = ofw_bus_get_node(dev);
pci_rid = pci_get_rid(child);
err = ofw_bus_msimap(node, pci_rid, NULL, &rid);
if (err != 0)
return (err);
*id = rid;
return (0);
}