fully convert arm to use dma-direct

[Andre Przywara]

On Thu, 21 Apr 2022 09:41:57 +0200
Christoph Hellwig <hch at lst.de> 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 at 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(-)