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/gem5/src/dev/virtio/
H A DVirtIO9P.pydiff 12076:d6fa15da87cd Wed Mar 01 08:50:00 EST 2017 Anouk Van Laer <anouk.vanlaer@arm.com> dev, virtio: Use of Unix socket for virtIO 9P device

This commit adds support for diod to use a unix socket, rather
than a TCP port. We don't rely on the IP-based connection as we
directly use pipes to interact with diod. This allows it to work
on any system, even if the specific port is taken by another diod
instance (or similar). Secondly, the Unix socket could in theory
be used to debug. However, this functionality has not been
tested.

Change-Id: I616e0ad8768da1dfc867de3af98cdfbb22a72d63
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Sascha Bischoff <sascha.bischoff@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/2820
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
H A Dfs9p.ccdiff 12076:d6fa15da87cd Wed Mar 01 08:50:00 EST 2017 Anouk Van Laer <anouk.vanlaer@arm.com> dev, virtio: Use of Unix socket for virtIO 9P device

This commit adds support for diod to use a unix socket, rather
than a TCP port. We don't rely on the IP-based connection as we
directly use pipes to interact with diod. This allows it to work
on any system, even if the specific port is taken by another diod
instance (or similar). Secondly, the Unix socket could in theory
be used to debug. However, this functionality has not been
tested.

Change-Id: I616e0ad8768da1dfc867de3af98cdfbb22a72d63
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Sascha Bischoff <sascha.bischoff@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/2820
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
/gem5/src/cpu/o3/
H A Diew.hhdiff 2820:7fde0b0f8f78 Wed Jul 05 15:51:00 EDT 2006 Kevin Lim <ktlim@umich.edu> Add some different parameters. The main change is that the writeback count is now limited so that it doesn't overflow the buffer.

src/cpu/o3/alpha_cpu_builder.cc:
src/cpu/o3/alpha_params.hh:
Add in dispatchWidth, wbWidth, wbDepth parameters. wbDepth is the number of cycles of wbWidth instructions that can be buffered.
src/cpu/o3/iew.hh:
Include separate parameter for dispatch width.
Also limit the number of outstanding writebacks so the writeback buffer isn't overflowed. The IQ must make sure with the IEW stage that it can issue instructions prior to issuing.
src/cpu/o3/iew_impl.hh:
Include separate parameter for dispatch width.
Also limit the number of outstanding writebacks so the writeback buffer isn't overflowed.
src/cpu/o3/inst_queue_impl.hh:
IQ needs to check with the IEW to make sure it can issue instructions, and increments the IEW wb counter each time there is an outstanding instruction that will writeback.
src/cpu/o3/lsq_unit_impl.hh:
Be sure to decrement the writeback counter if there's a squashed load that returned.
src/python/m5/objects/AlphaO3CPU.py:
Change the parameters to include dispatch width, writeback width, and writeback depth.
H A Dinst_queue_impl.hhdiff 2820:7fde0b0f8f78 Wed Jul 05 15:51:00 EDT 2006 Kevin Lim <ktlim@umich.edu> Add some different parameters. The main change is that the writeback count is now limited so that it doesn't overflow the buffer.

src/cpu/o3/alpha_cpu_builder.cc:
src/cpu/o3/alpha_params.hh:
Add in dispatchWidth, wbWidth, wbDepth parameters. wbDepth is the number of cycles of wbWidth instructions that can be buffered.
src/cpu/o3/iew.hh:
Include separate parameter for dispatch width.
Also limit the number of outstanding writebacks so the writeback buffer isn't overflowed. The IQ must make sure with the IEW stage that it can issue instructions prior to issuing.
src/cpu/o3/iew_impl.hh:
Include separate parameter for dispatch width.
Also limit the number of outstanding writebacks so the writeback buffer isn't overflowed.
src/cpu/o3/inst_queue_impl.hh:
IQ needs to check with the IEW to make sure it can issue instructions, and increments the IEW wb counter each time there is an outstanding instruction that will writeback.
src/cpu/o3/lsq_unit_impl.hh:
Be sure to decrement the writeback counter if there's a squashed load that returned.
src/python/m5/objects/AlphaO3CPU.py:
Change the parameters to include dispatch width, writeback width, and writeback depth.
H A Diew_impl.hhdiff 2820:7fde0b0f8f78 Wed Jul 05 15:51:00 EDT 2006 Kevin Lim <ktlim@umich.edu> Add some different parameters. The main change is that the writeback count is now limited so that it doesn't overflow the buffer.

src/cpu/o3/alpha_cpu_builder.cc:
src/cpu/o3/alpha_params.hh:
Add in dispatchWidth, wbWidth, wbDepth parameters. wbDepth is the number of cycles of wbWidth instructions that can be buffered.
src/cpu/o3/iew.hh:
Include separate parameter for dispatch width.
Also limit the number of outstanding writebacks so the writeback buffer isn't overflowed. The IQ must make sure with the IEW stage that it can issue instructions prior to issuing.
src/cpu/o3/iew_impl.hh:
Include separate parameter for dispatch width.
Also limit the number of outstanding writebacks so the writeback buffer isn't overflowed.
src/cpu/o3/inst_queue_impl.hh:
IQ needs to check with the IEW to make sure it can issue instructions, and increments the IEW wb counter each time there is an outstanding instruction that will writeback.
src/cpu/o3/lsq_unit_impl.hh:
Be sure to decrement the writeback counter if there's a squashed load that returned.
src/python/m5/objects/AlphaO3CPU.py:
Change the parameters to include dispatch width, writeback width, and writeback depth.
H A Dlsq_unit_impl.hhdiff 2820:7fde0b0f8f78 Wed Jul 05 15:51:00 EDT 2006 Kevin Lim <ktlim@umich.edu> Add some different parameters. The main change is that the writeback count is now limited so that it doesn't overflow the buffer.

src/cpu/o3/alpha_cpu_builder.cc:
src/cpu/o3/alpha_params.hh:
Add in dispatchWidth, wbWidth, wbDepth parameters. wbDepth is the number of cycles of wbWidth instructions that can be buffered.
src/cpu/o3/iew.hh:
Include separate parameter for dispatch width.
Also limit the number of outstanding writebacks so the writeback buffer isn't overflowed. The IQ must make sure with the IEW stage that it can issue instructions prior to issuing.
src/cpu/o3/iew_impl.hh:
Include separate parameter for dispatch width.
Also limit the number of outstanding writebacks so the writeback buffer isn't overflowed.
src/cpu/o3/inst_queue_impl.hh:
IQ needs to check with the IEW to make sure it can issue instructions, and increments the IEW wb counter each time there is an outstanding instruction that will writeback.
src/cpu/o3/lsq_unit_impl.hh:
Be sure to decrement the writeback counter if there's a squashed load that returned.
src/python/m5/objects/AlphaO3CPU.py:
Change the parameters to include dispatch width, writeback width, and writeback depth.

Completed in 127 milliseconds