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author | Andreas Hansson <andreas.hansson@arm.com> | 2012-02-24 11:46:39 -0500 |
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committer | Andreas Hansson <andreas.hansson@arm.com> | 2012-02-24 11:46:39 -0500 |
commit | 485d103255c0f64ebf697650c899fe7a80db1d6d (patch) | |
tree | 3826b9e0a3d340a4318bb4900ded5742734824aa /src/mem/port_proxy.cc | |
parent | 9e3c8de30bafe33f35e4b9e82fb49418941f8cb7 (diff) | |
download | gem5-485d103255c0f64ebf697650c899fe7a80db1d6d.tar.xz |
MEM: Move all read/write blob functions from Port to PortProxy
This patch moves the readBlob/writeBlob/memsetBlob from the Port class
to the PortProxy class, thus making a clear separation of the basic
port functionality (recv/send functional/atomic/timing), and the
higher-level functional accessors available on the port proxies.
There are only a few places in the code base where the blob functions
were used on ports, and they are all for peeking into the memory
system without making a normal memory access (in the memtest, and the
malta and tsunami pchip). The memtest also exemplifies how easy it is
to create a non-translating proxy if desired. The malta and tsunami
pchip used a slave port to perform a functional read, and this is now
changed to rely on the physProxy of the system (to which they already
have a pointer).
Diffstat (limited to 'src/mem/port_proxy.cc')
-rw-r--r-- | src/mem/port_proxy.cc | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/mem/port_proxy.cc b/src/mem/port_proxy.cc new file mode 100644 index 000000000..ac6ec2465 --- /dev/null +++ b/src/mem/port_proxy.cc @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2012 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 Hansson + */ + +#include "base/chunk_generator.hh" +#include "mem/port_proxy.hh" + +void +PortProxy::blobHelper(Addr addr, uint8_t *p, int size, MemCmd cmd) +{ + Request req; + + for (ChunkGenerator gen(addr, size, _port.peerBlockSize()); + !gen.done(); gen.next()) { + req.setPhys(gen.addr(), gen.size(), 0, Request::funcMasterId); + Packet pkt(&req, cmd, Packet::Broadcast); + pkt.dataStatic(p); + _port.sendFunctional(&pkt); + p += gen.size(); + } +} + +void +PortProxy::memsetBlob(Addr addr, uint8_t v, int size) +{ + // quick and dirty... + uint8_t *buf = new uint8_t[size]; + + std::memset(buf, v, size); + blobHelper(addr, buf, size, MemCmd::WriteReq); + + delete [] buf; +} |