gem5  v21.1.0.2
pci_host.cc
Go to the documentation of this file.
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 
38 #include "dev/arm/pci_host.hh"
39 
40 #include "params/GenericArmPciHost.hh"
41 
42 namespace gem5
43 {
44 
45 GenericArmPciHost::GenericArmPciHost(const GenericArmPciHostParams &p)
46  : GenericPciHost(p),
47  intPolicy(p.int_policy), intBase(p.int_base),
48  intCount(p.int_count)
49 {
50 }
51 
52 
53 uint32_t
55 {
57  "%02x:%02x.%i: Interrupt from a device without interrupts\n",
58  addr.bus, addr.dev, addr.func);
59 
60  switch (intPolicy) {
61  case enums::ARM_PCI_INT_STATIC:
63 
64  case enums::ARM_PCI_INT_DEV:
65  return intBase + (addr.dev % intCount);
66 
67  case enums::ARM_PCI_INT_PIN:
68  return intBase + ((static_cast<uint8_t>(pin) - 1) % intCount);
69 
70  default:
71  fatal("Unsupported PCI interrupt routing policy.");
72  }
73 }
74 
75 } // namespace gem5
fatal
#define fatal(...)
This implements a cprintf based fatal() function.
Definition: logging.hh:189
gem5::PciIntPin::NO_INT
@ NO_INT
gem5::GenericArmPciHost::mapPciInterrupt
uint32_t mapPciInterrupt(const PciBusAddr &addr, PciIntPin pin) const override
Definition: pci_host.cc:54
gem5::GenericArmPciHost::GenericArmPciHost
GenericArmPciHost(const GenericArmPciHostParams &p)
Definition: pci_host.cc:45
gem5::GenericPciHost
Configurable generic PCI host interface.
Definition: host.hh:276
gem5::GenericArmPciHost::intPolicy
const enums::ArmPciIntRouting intPolicy
Definition: pci_host.hh:62
gem5::GenericArmPciHost::intBase
const uint32_t intBase
Definition: pci_host.hh:63
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::GenericArmPciHost::intCount
const uint32_t intCount
Definition: pci_host.hh:64
gem5::PciBusAddr
Definition: types.hh:44
pci_host.hh
fatal_if
#define fatal_if(cond,...)
Conditional fatal macro that checks the supplied condition and only causes a fatal error if the condi...
Definition: logging.hh:225
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
gem5::PciIntPin
PciIntPin
Definition: types.hh:66
gem5::X86ISA::addr
Bitfield< 3 > addr
Definition: types.hh:84
gem5::GenericPciHost::mapPciInterrupt
virtual uint32_t mapPciInterrupt(const PciBusAddr &bus_addr, PciIntPin pin) const
Definition: host.cc:215

Generated on Tue Sep 21 2021 12:25:13 for gem5 by doxygen 1.8.17