diff options
Diffstat (limited to 'src/dev/arm/pci_host.cc')
-rw-r--r-- | src/dev/arm/pci_host.cc | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/dev/arm/pci_host.cc b/src/dev/arm/pci_host.cc new file mode 100644 index 000000000..69eecaa7b --- /dev/null +++ b/src/dev/arm/pci_host.cc @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2015 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Andreas Sandberg + */ + +#include "dev/arm/pci_host.hh" + +#include "params/GenericArmPciHost.hh" + +GenericArmPciHost::GenericArmPciHost(const GenericArmPciHostParams *p) + : GenericPciHost(p), + intPolicy(p->int_policy), intBase(p->int_base), + intCount(p->int_count) +{ +} + + +uint32_t +GenericArmPciHost::mapPciInterrupt(const PciBusAddr &addr, PciIntPin pin) const +{ + fatal_if(pin == PciIntPin::NO_INT, + "%02x:%02x.%i: Interrupt from a device without interrupts\n", + addr.bus, addr.dev, addr.func); + + switch (intPolicy) { + case Enums::ARM_PCI_INT_STATIC: + return GenericPciHost::mapPciInterrupt(addr, pin); + + case Enums::ARM_PCI_INT_DEV: + return intBase + (addr.dev % intCount); + + case Enums::ARM_PCI_INT_PIN: + return intBase + ((static_cast<uint8_t>(pin) - 1) % intCount); + + default: + fatal("Unsupported PCI interrupt routing policy."); + } +} + + +GenericArmPciHost * +GenericArmPciHostParams::create() +{ + return new GenericArmPciHost(this); +} |