Changes in cdma.h

c24973ed - gpu: host1x: Implement job tracking using DMA fences

Thu, 19 Jan 2023 13:09:19 +0000

gpu: host1x: Implement job tracking using DMA fencesIn anticipation of removal of the intr API, implement job trackingusing DMA fences instead. The main two things about this aremaking cdma_update schedule the work since fence completion cannow be called from interrupt context, and some complication inensuring the callback is not running when we free the fence.Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

9952f691 - treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201

Tue, 28 May 2019 17:10:04 +0000

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201Based 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 licensesextracted by the scancode license scanner the SPDX license identifier GPL-2.0-onlyhas 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.orgLink: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.deSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

5a5fccbd - gpu: host1x: Introduce support for wide opcodes

Fri, 01 Feb 2019 13:28:24 +0000

gpu: host1x: Introduce support for wide opcodesThe CDMA push buffer can currently only handle opcodes that take asingle word parameter. However, the host1x implementation on Tegra186and later supports opcodes that require multiple words as parameters.Unfortunately the way the push buffer is structured, these wide opcodescannot simply be composed of two regular opcodes because that couldresult in the wide opcode being split across the end of the push bufferand the final RESTART opcode required to wrap the push buffer aroundwould break the wide opcode.One way to fix this would be to remove the concept of slots to simplifypush buffer operations. However, that's not entirely trivial and shouldbe done in a separate patch. For now, simply use a different functionto push four-word opcodes into the push buffer. Technically only threewords are pushed, with the fourth word used as padding to preserve the2-word alignment required by the slots abstraction. The fourth word isalways a NOP opcode.Additional care must be taken when the end of the push buffer isreached. If a four-word opcode doesn't fit into the push buffer withoutbeing split by the boundary, NOP opcodes will be introduced and the newwide opcode placed at the beginning of the push buffer.Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

0747a672 - gpu: host1x: Use completion instead of semaphore

Mon, 10 Dec 2018 21:51:04 +0000

gpu: host1x: Use completion instead of semaphoreIn this usage, the two are completely equivalent, but the completiondocuments better what is going on, and we generally try to avoidsemaphores these days.Signed-off-by: Arnd Bergmann Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

bf3d41cc - gpu: host1x: Store pointer to client in jobs

Wed, 16 May 2018 12:12:33 +0000

gpu: host1x: Store pointer to client in jobsRather than storing some identifier derived from the applicationcontext that can't be used concretely anywhere, store a pointer to theclient directly so that accesses can be made directly through thatclient object.Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

2f8a6da8 - gpu: host1x: Fix compiler errors by converting to dma_addr_t

Wed, 16 May 2018 10:22:04 +0000

gpu: host1x: Fix compiler errors by converting to dma_addr_tThe compiler is complaining with the following errors:drivers/gpu/host1x/cdma.c:94:48: error: passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type [-Werror=incompatible-pointer-types]drivers/gpu/host1x/cdma.c:113:48: error: passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type [-Werror=incompatible-pointer-types]The expected pointer type of the third argument to dma_alloc_wc() isdma_addr_t but phys_addr_t is passed.Change the phys member of struct push_buffer to be dma_addr_t so that wepass the correct type to dma_alloc_wc().Also check pb->mapped for non-NULL in the destroy function as that is theright way of checking if dma_alloc_wc() was successful.Signed-off-by: Emil Goode Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

03f0de77 - gpu: host1x: Remove unused host1x_cdma_stop() definition

Wed, 14 Jun 2017 23:18:41 +0000

gpu: host1x: Remove unused host1x_cdma_stop() definitionThere is no host1x_cdma_stop() in the code, let's remove its definitionfrom the header file.Signed-off-by: Dmitry Osipenko Reviewed-by: Erik Faye-Lund Reviewed-by: Mikko Perttunen Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

404bfb78 - gpu: host1x: Add IOMMU support

Wed, 14 Dec 2016 11:16:14 +0000

gpu: host1x: Add IOMMU supportAdd support for the Host1x unit to be located behindan IOMMU. This is required when gather buffers may beallocated non-contiguously in physical memory, as canbe the case when TegraDRM is also using the IOMMU.Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

0169b93f - gpu: host1x: Make mapped field of push buffers void *

Thu, 12 Jun 2014 11:16:54 +0000

gpu: host1x: Make mapped field of push buffers void *This reduces the amount of casting that needs to be done to get rid ofannoying warnings on 64-bit builds.Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h

6579324a - gpu: host1x: Add channel support

Fri, 22 Mar 2013 14:34:03 +0000

gpu: host1x: Add channel supportAdd support for host1x client modules, and host1x channels to submitwork to the clients.Signed-off-by: Arto Merilainen Signed-off-by: Terje Bergstrom Reviewed-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Erik Faye-Lund Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/gpu/host1x/cdma.h