FreeBSD/Linux Kernel Cross Reference
sys/arm64/cavium/thunder_pcie_pem_fdt.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);
    
    DRIVER_MODULE(thunder_pem, simplebus, thunder_pem_fdt_driver, 0, 0);
    DRIVER_MODULE(thunder_pem, ofwbus, thunder_pem_fdt_driver, 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);
   }

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