talos-op-linux/arch/arm64/include/asm/dma-mapping.h, branch master

arm64: use asm-generic/dma-mapping.h

2019-09-11T10:43:27+00:00

Now that the Xen special cases are gone nothing worth mentioning is left in the arm64 file, so switch to use the asm-generic version instead. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Reviewed-by: Stefano Stabellini

xen/arm: use dev_is_dma_coherent

2019-09-11T10:43:26+00:00

Use the dma-noncoherent dev_is_dma_coherent helper instead of the home grown variant. Note that both are always initialized to the same value in arch_setup_dma_ops. Signed-off-by: Christoph Hellwig Reviewed-by: Julien Grall Reviewed-by: Stefano Stabellini

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234

2019-06-19T15:09:07+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that 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 503 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Reviewed-by: Enrico Weigelt Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman

dma-mapping: add a kconfig symbol for arch_teardown_dma_ops availability

2019-02-13T18:12:50+00:00

Signed-off-by: Christoph Hellwig Acked-by: Catalin Marinas # arm64

dma-mapping: add a kconfig symbol for arch_setup_dma_ops availability

2019-02-13T18:12:33+00:00

Signed-off-by: Christoph Hellwig Acked-by: Paul Burton # MIPS Acked-by: Catalin Marinas # arm64

arm64: default to the direct mapping in get_arch_dma_ops

2018-12-19T17:00:12+00:00

Otherwise the direct mapping won't work at all given that a NULL dev->dma_ops causes a fallback. Note that we already explicitly set dev->dma_ops to dma_dummy_ops for dma-incapable devices, so this fallback should not be needed anyway. Fixes: 356da6d0cd ("dma-mapping: bypass indirect calls for dma-direct") Signed-off-by: Christoph Hellwig Reported-by: Marek Szyprowski Tested-by: Marek Szyprowski Reviewed-by: Robin Murphy

dma-mapping: factor out dummy DMA ops

2018-12-13T20:06:12+00:00

The dummy DMA ops are currently used by arm64 for any device which has an invalid ACPI description and is thus barred from using DMA due to not knowing whether is is cache-coherent or not. Factor these out into general dma-mapping code so that they can be referenced from other common code paths. In the process, we can prune all the optional callbacks which just do the same thing as the default behaviour, and fill in .map_resource for completeness. Signed-off-by: Robin Murphy [hch: moved to a separate source file] Reviewed-by: Rafael J. Wysocki Acked-by: Jesper Dangaard Brouer Tested-by: Jesper Dangaard Brouer Tested-by: Tony Luck Signed-off-by: Christoph Hellwig

arm64: use the generic swiotlb_dma_ops

2018-10-19T06:53:24+00:00

Now that the generic swiotlb code supports non-coherent DMA we can switch to it for arm64. For that we need to refactor the existing alloc/free/mmap/pgprot helpers to be used as the architecture hooks, and implement the standard arch_sync_dma_for_{device,cpu} hooks for cache maintaincance in the streaming dma hooks, which also implies using the generic dma_coherent flag in struct device. Note that we need to keep the old is_device_dma_coherent function around for now, so that the shared arm/arm64 Xen code keeps working. Signed-off-by: Christoph Hellwig Acked-by: Catalin Marinas

Revert "dma-mapping: clear dev->dma_ops in arch_teardown_dma_ops"

2018-09-25T22:12:26+00:00

This reverts commit 46053c73685411915d3de50c5a0045beef32806b. This change breaks architectures setting up dma_ops in their own magic way and not using arch_setup_dma_ops, so revert it. Reported-by: Guenter Roeck Signed-off-by: Christoph Hellwig

dma-mapping: clear dev->dma_ops in arch_teardown_dma_ops

2018-09-08T09:19:38+00:00

There is no reason to leave the per-device dma_ops around when deconfiguring a device, so move this code from arm64 into the common code. Signed-off-by: Christoph Hellwig Reviewed-by: Robin Murphy