[PATCH v2 0/6] drm/ast: Managed MM

[Thomas Zimmermann]

Am 16.07.20 um 15:24 schrieb Sam Ravnborg:
> Hi Thomas.
> 
> On Thu, Jul 16, 2020 at 02:53:47PM +0200, Thomas Zimmermann wrote:
>> This is the second patchset for converting ast to managed DRM interfaces.
>> This one addresses memory management. There will be another, final round
>> of patches for converting DRM device structures as well.
>>
>> Patch #1 introduces managed initialization for VRAM MM. Other drivers
>> using the VRAM helpers should be converted to this at some point.
>>
>> Patches #2 to #4 do some preparation that make ast look slightly nicer.
>>
>> Patch #5 fixes a long-standing bug that I found as part of the rework.
>> Posting the GPU requires information about the installed DRAM. So the DRAM
>> detection has to run before the GPU-posting code. This got reversed by a
>> fix in v4.11. The patch restores the original correct order of these
>> operations. As the GPU is usually posted by the VGA BIOS, the problem might
>> not have shown up in practice.
>>
>> With all the cleanups in place, patch #6 switches memory management to
>> mnaged interfaces.
>>
>> Tested on AST2100 HW.
>>
>> v2:
>> 	* reworked managed VRAM MM; new interface name, returns errno
>> 	  code, improved documentation (Sam)
>>
>> Thomas Zimmermann (6):
>>   drm/vram-helper: Managed vram helpers
>>   drm/ast: Rename ast_ttm.c to ast_mm.c
>>   drm/ast: Use managed VRAM-helper initialization
>>   drm/ast: Move VRAM size detection to ast_mm.c
>>   drm/ast: Initialize DRAM type before posting GPU
>>   drm/ast: Use managed MM initialization
> 
> Series looks good now. All patches are:
> Reviewed-by: Sam Ravnborg <sam at ravnborg.org>

Thanks, Sam. I added the patches to drm-misc-next

> 
> 
> 	Sam
>>
>>  drivers/gpu/drm/ast/Makefile                |  2 +-
>>  drivers/gpu/drm/ast/ast_drv.h               |  2 -
>>  drivers/gpu/drm/ast/ast_main.c              | 45 ++---------
>>  drivers/gpu/drm/ast/{ast_ttm.c => ast_mm.c} | 77 ++++++++++++++-----
>>  drivers/gpu/drm/drm_gem_vram_helper.c       | 84 ++++++++++++---------
>>  include/drm/drm_gem_vram_helper.h           |  3 +
>>  6 files changed, 115 insertions(+), 98 deletions(-)
>>  rename drivers/gpu/drm/ast/{ast_ttm.c => ast_mm.c} (63%)
>>
>> --
>> 2.27.0

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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