1/*
2 * Copyright (c) 2015 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Andreas Sandberg
38 */
39
40#include "dev/arm/pci_host.hh"
41
42#include "params/GenericArmPciHost.hh"
43
44GenericArmPciHost::GenericArmPciHost(const GenericArmPciHostParams *p)
45    : GenericPciHost(p),
46      intPolicy(p->int_policy), intBase(p->int_base),
47      intCount(p->int_count)
48{
49}
50
51
52uint32_t
53GenericArmPciHost::mapPciInterrupt(const PciBusAddr &addr, PciIntPin pin) const
54{
55    fatal_if(pin == PciIntPin::NO_INT,
56             "%02x:%02x.%i: Interrupt from a device without interrupts\n",
57             addr.bus, addr.dev, addr.func);
58
59    switch (intPolicy) {
60      case Enums::ARM_PCI_INT_STATIC:
61        return GenericPciHost::mapPciInterrupt(addr, pin);
62
63      case Enums::ARM_PCI_INT_DEV:
64        return intBase + (addr.dev % intCount);
65
66      case Enums::ARM_PCI_INT_PIN:
67        return intBase + ((static_cast<uint8_t>(pin) - 1) % intCount);
68
69      default:
70        fatal("Unsupported PCI interrupt routing policy.");
71    }
72}
73
74
75GenericArmPciHost *
76GenericArmPciHostParams::create()
77{
78    return new GenericArmPciHost(this);
79}
80