dev-hsa: Add HSA device and HSA packet processor

This change adds support for HSA devices, which are
DMA devices that have an HSA packet processor (HSAPP).

An HSA packet processor model is also included. The
HSAPP is a DMA device that matains AQL packet queues
and handles extraction of AQL packets, scheduling
of AQL queues, and initiates kernel launch for HSA
devices.

Because these devices directly interact with low-level
software and aid in the implementation of the HSA ABI
we also include some headers from the ROCm runtime:
the hsa.h and kfd_ioctl.h headers. These aid with
support ROCm for the HSA devices and drivers.

Change-Id: I24305e0337edc6fa555d436697b4e607a1e097d5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28128
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/dev/hsa/SConscript

@@ -0,0 +1,50 @@
+# -*- mode:python -*-
+
+# Copyright (c) 2017 Advanced Micro Devices, Inc.
+# All rights reserved.
+#
+# For use for simulation and test purposes only
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+#
+# 2. 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.
+#
+# 3. Neither the name of the copyright holder 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 HOLDER 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: Anthony Gutierrez
+
+Import('*')
+
+if not env['BUILD_GPU']:
+    Return()
+
+SimObject('HSADevice.py')
+SimObject('HSADriver.py')
+
+Source('hsa_device.cc')
+Source('hsa_driver.cc')
+Source('hsa_packet_processor.cc')
+Source('hw_scheduler.cc')
+
+DebugFlag('HSADriver')
+DebugFlag('HSAPacketProcessor')