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/*
* Copyright (c) 2010 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.
*
* Copyright (c) 2005 The Regents of The University of Michigan
* All rights reserved.
*
* 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: Ali Saidi
*/
#include "base/trace.hh"
#include "debug/AMBA.hh"
#include "dev/arm/amba_device.hh"
#include "dev/arm/amba_fake.hh"
#include "mem/packet.hh"
#include "mem/packet_access.hh"
const uint64_t AmbaVendor = ULL(0xb105f00d00000000);
AmbaPioDevice::AmbaPioDevice(const Params *p, Addr pio_size)
: BasicPioDevice(p, pio_size), ambaId(AmbaVendor | p->amba_id)
{
}
AmbaIntDevice::AmbaIntDevice(const Params *p, Addr pio_size)
: AmbaPioDevice(p, pio_size),
intNum(p->int_num), gic(p->gic), intDelay(p->int_delay)
{
}
AmbaDmaDevice::AmbaDmaDevice(const Params *p)
: DmaDevice(p), ambaId(AmbaVendor | p->amba_id),
pioAddr(p->pio_addr), pioSize(0),
pioDelay(p->pio_latency),intNum(p->int_num), gic(p->gic)
{
}
bool
AmbaDevice::readId(PacketPtr pkt, uint64_t amba_id, Addr pio_addr)
{
Addr daddr = pkt->getAddr() - pio_addr;
if (daddr < AMBA_PER_ID0 || daddr > AMBA_CEL_ID3)
return false;
pkt->allocate();
int byte = (daddr - AMBA_PER_ID0) << 1;
// Too noisy right now
DPRINTF(AMBA, "Returning %#x for offset %#x(%d)\n",
(amba_id >> byte) & 0xFF,
pkt->getAddr() - pio_addr, byte);
assert(pkt->getSize() == 4);
pkt->set<uint32_t>((amba_id >> byte) & 0xFF);
return true;
}
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