f94f8e62ab
FDT attachment to a new file. A separate ACPI attachment will then be added to allow arm64 servers with ACPI to use it over FDT. This should also help with merging this with the ofwpci driver, with further work needed to remove restrictions this driver places on resource allocation. Obtained from: ABT Systems Ltd Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D7319
162 lines
4.8 KiB
C
162 lines
4.8 KiB
C
/*
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* Copyright (C) 2016 Cavium Inc.
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* All rights reserved.
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*
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* Developed by Semihalf.
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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 "opt_platform.h"
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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/systm.h>
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#include <sys/malloc.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <sys/kernel.h>
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#include <sys/rman.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/cpuset.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pci_host_generic.h>
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#include <dev/pci/pci_host_generic_fdt.h>
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#include <dev/pci/pcib_private.h>
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#include "thunder_pcie_common.h"
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#include "pcib_if.h"
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#ifdef THUNDERX_PASS_1_1_ERRATA
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static struct resource * thunder_pcie_fdt_alloc_resource(device_t, device_t,
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int, int *, rman_res_t, rman_res_t, rman_res_t, u_int);
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#endif
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static int thunder_pcie_fdt_attach(device_t);
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static int thunder_pcie_fdt_probe(device_t);
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static int thunder_pcie_fdt_get_id(device_t, device_t, enum pci_id_type,
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uintptr_t *);
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static device_method_t thunder_pcie_fdt_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, thunder_pcie_fdt_probe),
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DEVMETHOD(device_attach, thunder_pcie_fdt_attach),
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#ifdef THUNDERX_PASS_1_1_ERRATA
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DEVMETHOD(bus_alloc_resource, thunder_pcie_fdt_alloc_resource),
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#endif
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/* pcib interface */
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DEVMETHOD(pcib_get_id, thunder_pcie_fdt_get_id),
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/* End */
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(pcib, thunder_pcie_fdt_driver, thunder_pcie_fdt_methods,
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sizeof(struct generic_pcie_fdt_softc), generic_pcie_fdt_driver);
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static devclass_t thunder_pcie_fdt_devclass;
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DRIVER_MODULE(thunder_pcib, simplebus, thunder_pcie_fdt_driver,
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thunder_pcie_fdt_devclass, 0, 0);
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DRIVER_MODULE(thunder_pcib, ofwbus, thunder_pcie_fdt_driver,
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thunder_pcie_fdt_devclass, 0, 0);
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static int
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thunder_pcie_fdt_probe(device_t dev)
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{
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/* Check if we're running on Cavium ThunderX */
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if (!CPU_MATCH(CPU_IMPL_MASK | CPU_PART_MASK,
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CPU_IMPL_CAVIUM, CPU_PART_THUNDER, 0, 0))
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return (ENXIO);
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (ofw_bus_is_compatible(dev, "pci-host-ecam-generic") ||
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ofw_bus_is_compatible(dev, "cavium,thunder-pcie") ||
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ofw_bus_is_compatible(dev, "cavium,pci-host-thunder-ecam")) {
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device_set_desc(dev, "Cavium Integrated PCI/PCI-E Controller");
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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static int
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thunder_pcie_fdt_attach(device_t dev)
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{
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struct generic_pcie_fdt_softc *sc;
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sc = device_get_softc(dev);
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thunder_pcie_identify_ecam(dev, &sc->base.ecam);
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sc->base.coherent = 1;
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return (pci_host_generic_attach(dev));
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}
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static int
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thunder_pcie_fdt_get_id(device_t pci, device_t child, enum pci_id_type type,
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uintptr_t *id)
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{
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phandle_t node;
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int bsf;
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if (type != PCI_ID_MSI)
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return (pcib_get_id(pci, child, type, id));
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node = ofw_bus_get_node(pci);
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if (OF_hasprop(node, "msi-map"))
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return (generic_pcie_get_id(pci, child, type, id));
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bsf = pci_get_rid(child);
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*id = (pci_get_domain(child) << PCI_RID_DOMAIN_SHIFT) | bsf;
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return (0);
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}
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#ifdef THUNDERX_PASS_1_1_ERRATA
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static struct resource *
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thunder_pcie_fdt_alloc_resource(device_t dev, device_t child, int type, int *rid,
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rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
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{
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if ((int)ofw_bus_get_node(child) > 0)
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return (pci_host_generic_alloc_resource(dev, child,
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type, rid, start, end, count, flags));
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return (thunder_pcie_alloc_resource(dev, child,
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type, rid, start, end, count, flags));
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}
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#endif
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