76888a9cca
dGPUs mmap the GPURenderDriver, however it doesn't appear that they do anything with it. This patch implements the mmap function by just returning the address provided, while not doing anything else Change-Id: Ia010a2aebcf7e2c75e22d93dfb440937d1bef3b1 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47523 Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com> Reviewed-by: Matthew Poremba <matthew.poremba@amd.com> Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
66 lines
2.6 KiB
C++
66 lines
2.6 KiB
C++
/*
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* Copyright (c) 2021 Kyle Roarty
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* All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "gpu-compute/gpu_render_driver.hh"
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#include "params/GPURenderDriver.hh"
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#include "sim/fd_entry.hh"
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namespace gem5
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{
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GPURenderDriver::GPURenderDriver(const GPURenderDriverParams &p)
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: EmulatedDriver(p)
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{
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}
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/* ROCm 4 utilizes the render driver located at /dev/dri/renderDXXX. This
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* patch implements a very simple driver that just returns a file
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* descriptor when opened.
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*/
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int
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GPURenderDriver::open(ThreadContext *tc, int mode, int flags)
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{
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auto process = tc->getProcessPtr();
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auto device_fd_entry = std::make_shared<DeviceFDEntry>(this, filename);
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int tgt_fd = process->fds->allocFD(device_fd_entry);
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return tgt_fd;
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}
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/* DGPUs try to mmap the driver file. It doesn't appear they do anything
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* with it, so we just return the address that's provided
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*/
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Addr GPURenderDriver::mmap(ThreadContext *tc, Addr start, uint64_t length,
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int prot, int tgt_flags, int tgt_fd, off_t offset)
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{
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warn_once("GPURenderDriver::mmap returning start address %#x", start);
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return start;
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}
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} // namespace gem5
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