Re: fully convert arm to use dma-direct
From: Andre Przywara <andre.przywara@arm.com>
Date: 2022-04-21 10:41:15
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linux-iommu, linux-usb, lkml
On Thu, 21 Apr 2022 09:41:57 +0200 Christoph Hellwig [off-list ref] wrote: Hi,
arm is the last platform not using the dma-direct code for directly mapped DMA. With the dmaboune removal from Arnd we can easily switch arm to always use dma-direct now (it already does for LPAE configs and nommu). I'd love to merge this series through the dma-mapping tree as it gives us the opportunity for additional core dma-mapping improvements. Diffstat: arch/arm/common/dmabounce.c | 582 ------------------- arch/arm/include/asm/dma-mapping.h | 128 ---- b/arch/arm/Kconfig | 5 b/arch/arm/common/Kconfig | 6 b/arch/arm/common/Makefile | 1 b/arch/arm/common/sa1111.c | 64 -- b/arch/arm/include/asm/device.h | 3 b/arch/arm/include/asm/dma-direct.h | 49 - b/arch/arm/include/asm/memory.h | 2 b/arch/arm/mach-footbridge/Kconfig | 1 b/arch/arm/mach-footbridge/common.c | 19 b/arch/arm/mach-footbridge/include/mach/dma-direct.h | 8 b/arch/arm/mach-footbridge/include/mach/memory.h | 4 b/arch/arm/mach-highbank/highbank.c | 2
FWIW, I applied this on top of 5.18-rc3 and pushed my Midway (the Highbank successor) a bit with it (scp-ing GBs forth and back to a SATA SSD). Not a really conclusive test, but so far it looks all fine. So for the Highbank part: Acked-by: Andre Przywara <andre.przywara@arm.com> Cheers, Andre
b/arch/arm/mach-mvebu/coherency.c | 2 b/arch/arm/mm/dma-mapping.c | 381 ------------ b/drivers/usb/core/hcd.c | 17 b/drivers/usb/host/ohci-sa1111.c | 25 18 files changed, 84 insertions(+), 1215 deletions(-)
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