FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/pcib_support.c

     /*
      * Copyright (c) 2014 Sandvine Inc.  All rights reserved.
      * 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: releng/11.2/sys/dev/pci/pcib_support.c 299929 2016-05-16 09:15:50Z andrew $");
    
    /*
     * Support functions for the PCI:PCI bridge driver.  This has to be in a
     * separate file because kernel configurations end up referencing the functions
     * here even when pci support is compiled out of the kernel.
     */
    
    #include <sys/param.h>
    #include <sys/bus.h>
    #include <sys/kernel.h>
    #include <sys/malloc.h>
    #include <sys/module.h>
    #include <sys/rman.h>
    #include <sys/sysctl.h>
    #include <sys/systm.h>
    
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcib_private.h>
    
    #include "pcib_if.h"
    
    int
    pcib_maxfuncs(device_t dev)
    {
            return (PCI_FUNCMAX);
    }
    
    int
    pcib_get_id(device_t pcib, device_t dev, enum pci_id_type type, uintptr_t *id)
    {
            uint8_t bus, slot, func;
    
            if (type != PCI_ID_RID)
                    return (ENXIO);
    
            bus = pci_get_bus(dev);
            slot = pci_get_slot(dev);
            func = pci_get_function(dev);
    
            *id = (PCI_RID(bus, slot, func));
            return (0);
    }
    
    void
    pcib_decode_rid(device_t pcib, uint16_t rid, int *bus, int *slot,
        int *func)
    {
    
            *bus = PCI_RID2BUS(rid);
            *slot = PCI_RID2SLOT(rid);
            *func = PCI_RID2FUNC(rid);
    }
    

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