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
pcib_maxfuncs(device_t dev)50 pcib_maxfuncs(device_t dev)
51 {
52 return (PCI_FUNCMAX);
53 }
54
55 int
pcib_get_id(device_t pcib,device_t dev,enum pci_id_type type,uintptr_t * id)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
pcib_decode_rid(device_t pcib,uint16_t rid,int * bus,int * slot,int * func)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