[PATCH 27/44] sparc: remove leon_dma_ops

clean up and modularize arch dma_mapping interface · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 01/44] firmware/ivc: use dma_mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 01/44] firmware/ivc: use dma_mapping_error · Thierry Reding <hidden> · 2017-06-13
[PATCH 02/44] ibmveth: properly unwind on init errors · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 02/44] ibmveth: properly unwind on init errors · David Miller <davem@davemloft.net> · 2017-06-08
[PATCH 04/44] drm/exynos: don't use DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 06/44] iommu/dma: don't rely on DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 06/44] iommu/dma: don't rely on DMA_ERROR_CODE · Robin Murphy <robin.murphy@arm.com> · 2017-06-08
Re: [PATCH 06/44] iommu/dma: don't rely on DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-16
[PATCH 07/44] xen-swiotlb: consolidate xen_swiotlb_dma_ops · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 07/44] xen-swiotlb: consolidate xen_swiotlb_dma_ops · Konrad Rzeszutek Wilk <hidden> · 2017-06-11
[PATCH 08/44] xen-swiotlb: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 08/44] xen-swiotlb: implement ->mapping_error · Konrad Rzeszutek Wilk <hidden> · 2017-06-11
[PATCH 13/44] openrisc: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 12/44] microblaze: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 10/44] ia64: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 15/44] xtensa: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 17/44] hexagon: switch to use ->mapping_error for error reporting · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 17/44] hexagon: switch to use ->mapping_error for error reporting · Richard Kuo <hidden> · 2017-06-16
[PATCH 19/44] s390: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 19/44] s390: implement ->mapping_error · Gerald Schaefer <hidden> · 2017-06-08
[PATCH 18/44] iommu/amd: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 23/44] x86/calgary: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 24/44] x86: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 27/44] sparc: remove leon_dma_ops · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 27/44] sparc: remove leon_dma_ops · David Miller <davem@davemloft.net> · 2017-06-08
Re: [PATCH 27/44] sparc: remove leon_dma_ops · Andreas Larsson <andreas@gaisler.com> · 2017-06-12
Re: [PATCH 27/44] sparc: remove leon_dma_ops · Christoph Hellwig <hch@lst.de> · 2017-06-16
[PATCH 28/44] sparc: remove arch specific dma_supported implementations · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 28/44] sparc: remove arch specific dma_supported implementations · Julian Calaby <hidden> · 2017-06-08
Re: [PATCH 28/44] sparc: remove arch specific dma_supported implementations · Christoph Hellwig <hch@lst.de> · 2017-06-16
Re: [PATCH 28/44] sparc: remove arch specific dma_supported implementations · David Miller <davem@davemloft.net> · 2017-06-08
[PATCH 26/44] dma-mapping: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 30/44] dma-virt: remove dma_supported and mapping_error methods · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 33/44] openrisc: remove arch-specific dma_supported implementation · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 33/44] openrisc: remove arch-specific dma_supported implementation · Geert Uytterhoeven <geert@linux-m68k.org> · 2017-06-09
Re: [PATCH 33/44] openrisc: remove arch-specific dma_supported implementation · Christoph Hellwig <hch@lst.de> · 2017-06-16
[PATCH 31/44] hexagon: remove arch-specific dma_supported implementation · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 31/44] hexagon: remove arch-specific dma_supported implementation · Richard Kuo <hidden> · 2017-06-16
[PATCH 36/44] dma-mapping: remove HAVE_ARCH_DMA_SUPPORTED · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 37/44] mips/loongson64: implement ->dma_supported instead of ->set_dma_mask · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 38/44] arm: implement ->dma_supported instead of ->set_dma_mask · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 42/44] powerpc/cell: use the dma_supported method for ops switching · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 41/44] powerpc/cell: clean up fixed mapping dma_ops initialization · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 44/44] powerpc: merge __dma_set_mask into dma_set_mask · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 43/44] dma-mapping: remove the set_dma_mask method · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 40/44] tile: remove dma_supported and mapping_error methods · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 39/44] xen-swiotlb: remove xen_swiotlb_set_dma_mask · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 35/44] x86: remove arch specific dma_supported implementation · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 32/44] hexagon: remove the unused dma_is_consistent prototype · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 34/44] arm: remove arch specific dma_supported implementation · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 29/44] dma-noop: remove dma_supported and mapping_error methods · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 25/44] arm: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 25/44] arm: implement ->mapping_error · Russell King - ARM Linux <linux@armlinux.org.uk> · 2017-06-08
Re: [PATCH 25/44] arm: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-16
[PATCH 22/44] x86/pci-nommu: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 21/44] powerpc: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 21/44] powerpc: implement ->mapping_error · Michael Ellerman <mpe@ellerman.id.au> · 2017-06-14
[PATCH 20/44] sparc: implement ->mapping_error · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 20/44] sparc: implement ->mapping_error · David Miller <davem@davemloft.net> · 2017-06-08
[PATCH 16/44] arm64: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 16/44] arm64: remove DMA_ERROR_CODE · Robin Murphy <robin.murphy@arm.com> · 2017-06-08
[PATCH 14/44] sh: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 11/44] m32r: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 09/44] c6x: remove DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 05/44] drm/armada: don't abuse DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
[PATCH 03/44] dmaengine: ioat: don't use DMA_ERROR_CODE · Christoph Hellwig <hch@lst.de> · 2017-06-08
Re: [PATCH 03/44] dmaengine: ioat: don't use DMA_ERROR_CODE · Dave Jiang <dave.jiang@intel.com> · 2017-06-08
Re: [PATCH 03/44] dmaengine: ioat: don't use DMA_ERROR_CODE · Vinod Koul <hidden> · 2017-06-14
Re: clean up and modularize arch dma_mapping interface · David Miller <davem@davemloft.net> · 2017-06-08
Re: clean up and modularize arch dma_mapping interface · Daniel Vetter <hidden> · 2017-06-20
Re: clean up and modularize arch dma_mapping interface · Christoph Hellwig <hch@lst.de> · 2017-06-20

From: andreas@gaisler.com (Andreas Larsson)
Date: 2017-06-12 08:33:45
Also in: dri-devel, linux-iommu, linux-mips, linux-samsung-soc, linux-sh, linux-tegra, linuxppc-dev, lkml, netdev, sparclinux

On 2017-06-08 15:25, Christoph Hellwig wrote:

We can just use pci32_dma_ops.

Btw, given that leon is 32-bit and appears to be PCI based, do even need
the special case for it in get_arch_dma_ops at all?

Hi!

Yes, it is needed. LEON systems are AMBA bus based. The common case here 
is DMA over AMBA buses. Some LEON systems have PCI bridges, but in 
general CONFIG_PCI is not a given.

-- 
Andreas Larsson
Software Engineer
Cobham Gaisler

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