1 /* 2 * Copyright (c) 2014 Sandvine Inc. All rights reserved. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* 31 * Support functions for the PCI:PCI bridge driver. This has to be in a 32 * separate file because kernel configurations end up referencing the functions 33 * here even when pci support is compiled out of the kernel. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/kernel.h> 39 #include <sys/malloc.h> 40 #include <sys/module.h> 41 #include <sys/rman.h> 42 #include <sys/sysctl.h> 43 #include <sys/systm.h> 44 45 #include <dev/pci/pcivar.h> 46 #include <dev/pci/pcireg.h> 47 #include <dev/pci/pcib_private.h> 48 49 #include "pcib_if.h" 50 51 int 52 pcib_maxfuncs(device_t dev) 53 { 54 return (PCI_FUNCMAX); 55 } 56 57 int 58 pcib_get_id(device_t pcib, device_t dev, enum pci_id_type type, uintptr_t *id) 59 { 60 uint8_t bus, slot, func; 61 62 if (type != PCI_ID_RID) 63 return (ENXIO); 64 65 bus = pci_get_bus(dev); 66 slot = pci_get_slot(dev); 67 func = pci_get_function(dev); 68 69 *id = (PCI_RID(bus, slot, func)); 70 return (0); 71 } 72 73 void 74 pcib_decode_rid(device_t pcib, uint16_t rid, int *bus, int *slot, 75 int *func) 76 { 77 78 *bus = PCI_RID2BUS(rid); 79 *slot = PCI_RID2SLOT(rid); 80 *func = PCI_RID2FUNC(rid); 81 } 82 83