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 /* 29 * Support functions for the PCI:PCI bridge driver. This has to be in a 30 * separate file because kernel configurations end up referencing the functions 31 * here even when pci support is compiled out of the kernel. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/malloc.h> 38 #include <sys/module.h> 39 #include <sys/rman.h> 40 #include <sys/sysctl.h> 41 #include <sys/systm.h> 42 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcib_private.h> 46 47 #include "pcib_if.h" 48 49 int 50 pcib_maxfuncs(device_t dev) 51 { 52 return (PCI_FUNCMAX); 53 } 54 55 int 56 pcib_get_id(device_t pcib, device_t dev, enum pci_id_type type, uintptr_t *id) 57 { 58 uint8_t bus, slot, func; 59 60 if (type == PCI_ID_OFW_IOMMU) 61 return (PCI_GET_ID(device_get_parent(pcib), dev, type, id)); 62 63 if (type != PCI_ID_RID) 64 return (ENXIO); 65 66 bus = pci_get_bus(dev); 67 slot = pci_get_slot(dev); 68 func = pci_get_function(dev); 69 70 *id = (PCI_RID(bus, slot, func)); 71 return (0); 72 } 73 74 void 75 pcib_decode_rid(device_t pcib, uint16_t rid, int *bus, int *slot, 76 int *func) 77 { 78 79 *bus = PCI_RID2BUS(rid); 80 *slot = PCI_RID2SLOT(rid); 81 *func = PCI_RID2FUNC(rid); 82 } 83