lkml.org 
[lkml]   [2018]   [Oct]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH v2 3/4] dmaengine: xilinx_dma: Introduce helper macro for preparing dma address
Date
Hi,

Thanks for the patch...

>
> This patch introduces the xilinx_prep_dma_addr_t macro which prepares
> dma_addr_t from hardware buffer descriptor LSB and MSB fields. It will be
> used in simple dma 64-bit programming sequence.
>
> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

Reviewed-by: Appana Durga Kedareswara Rao <appana.durga.rao@xilinx.com>

Regards,
Kedar.

> ---
> Changes for v2:
> New patch- Preparatory change for 4/4 fix.
> ---
> drivers/dma/xilinx/xilinx_dma.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
> index a37871e..c27ab64 100644
> --- a/drivers/dma/xilinx/xilinx_dma.c
> +++ b/drivers/dma/xilinx/xilinx_dma.c
> @@ -190,6 +190,8 @@
> /* AXI CDMA Specific Masks */
> #define XILINX_CDMA_CR_SGMODE BIT(3)
>
> +#define xilinx_prep_dma_addr_t(addr) \
> + ((dma_addr_t)((u64)addr##_##msb << 32 | (addr)))
> /**
> * struct xilinx_vdma_desc_hw - Hardware Descriptor
> * @next_desc: Next Descriptor Pointer @0x00
> --
> 1.7.1

\
 
 \ /
  Last update: 2018-10-19 12:38    [W:0.101 / U:1.428 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site