[Intel-gfx] [PATCH v2] drm/i915: Refactor setting dma info to a common helper

[Chris Wilson]

Quoting Michael J. Ruhl (2020-04-17 20:51:07)
> DMA_MASK bit values are different for different generations.
> 
> This will become more difficult to manage over time with the open
> coded usage of different versions of the device.
> 
> Fix by:
>   disallow setting of dma mask in AGP path (< GEN(5) for i915,
>   add dma_mask_size to the device info configuration,
>   updating open code call sequence to the latest interface,
>   refactoring into a common function for setting the dma segment
>   and mask info
> 
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Michael J. Ruhl <michael.j.ruhl at intel.com>
> cc: Brian Welty <brian.welty at intel.com>
> cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
> 
> ---
> v1: removed i915 depenancy from agp path for dma mask
>     Consolidated segment size and work arounds to the helper
> v2: added r-b

You don't need to resend for adding r-b by itself, patchwork will do
that, and the committer should be checking the output from pw. dim then
double checks that we haven't missed anything vital.
-Chris