BMC/Intel-BMC/linux.git/drivers/gpu/host1x/job.c, branch dev-5.2

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201

2019-05-30T18:29:52+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 228 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Steve Winslow Reviewed-by: Richard Fontana Reviewed-by: Alexios Zavras Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.de Signed-off-by: Greg Kroah-Hartman

gpu: host1x: Check whether size of unpin isn't 0

2018-07-09T08:31:30+00:00

Only gather pins are mapped by the Host1x driver, regular BO relocations are not. Check whether size of unpin isn't 0, otherwise IOVA allocation at 0x0 could be erroneously released. Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: Use not explicitly sized types

2018-05-18T19:51:37+00:00

The number of words and the offset in a gather don't need to be explicitly sized, so make them unsigned int instead. Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: Rename relocarray -> relocs for consistency

2018-05-18T19:51:25+00:00

All other array variables use a plural, and this is the only one using the *array suffix. This is confusing, so rename it for consistency. Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: Cleanup loop variable usage

2018-05-18T19:50:40+00:00

Use unsigned int where possible and don't unnecessarily initialize the loop variable. Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: Remove wait check support

2018-05-18T19:50:04+00:00

The job submission userspace ABI doesn't support this and there are no plans to implement it, so all of this code is dead and can be removed. Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: Don't fail on NULL bo physical address

2017-08-17T15:57:06+00:00

Pinning a Host1x BO currently cannot fail and zero is a valid address for a BO when IOMMU is enabled. To avoid false errors remove checks for NULL BO physical addresses. Fixes: 404bfb78daf3 ("gpu: host1x: Add IOMMU support") Signed-off-by: Mikko Perttunen Reviewed-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: At first try a non-blocking allocation for the gather copy

2017-06-15T12:25:56+00:00

The blocking gather copy allocation is a major performance downside of the Host1x firewall, it may take hundreds milliseconds which is unacceptable for the real-time graphics operations. Let's try a non-blocking allocation first as a least invasive solution, it makes opentegra (Xorg driver) performance indistinguishable with/without the firewall. Signed-off-by: Dmitry Osipenko Reviewed-by: Erik Faye-Lund Signed-off-by: Thierry Reding

gpu: host1x: Check waits in the firewall

2017-06-15T12:24:41+00:00

Check waits in the firewall in a way it is done for relocations. Signed-off-by: Dmitry Osipenko Reviewed-by: Mikko Perttunen Reviewed-by: Erik Faye-Lund Signed-off-by: Thierry Reding

gpu: host1x: Forbid unrelated SETCLASS opcode in the firewall

2017-06-15T12:23:50+00:00

Several channels could be made to write the same unit concurrently via the SETCLASS opcode, trusting userspace is a bad idea. It should be possible to drop the per-client channel reservation and add a per-unit locking by inserting MLOCK's to the command stream to re-allow the SETCLASS opcode, but it will be much more work. Let's forbid the unit-unrelated class changes for now. Signed-off-by: Dmitry Osipenko Reviewed-by: Erik Faye-Lund Reviewed-by: Mikko Perttunen Signed-off-by: Thierry Reding