Re: [PATCH v2 00/21] Convert all remaining drivers to GEM object functions

From: Thomas Zimmermann <tzimmermann@suse.de>
To: "Christian König" <christian.koenig@amd.com>,
	alexander.deucher@amd.com, airlied@linux.ie, daniel@ffwll.ch,
	linux@armlinux.org.uk, maarten.lankhorst@linux.intel.com,
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Subject: Re: [PATCH v2 00/21] Convert all remaining drivers to GEM object functions
Date: Thu, 17 Sep 2020 09:05:19 +0200	[thread overview]
Message-ID: <94b4d32e-92f2-cc29-1d59-b9b10b814220@suse.de> (raw)
In-Reply-To: <b527fde4-b456-6683-4a9e-0f7dcf1525be@amd.com>

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Hi

Am 15.09.20 um 17:25 schrieb Christian König:
> Added my rb to the amdgpu and radeon patches.
> 
> Should we pick those up through the amd branches or do you want to push
> everything to drm-misc-next?
> 
> I think the later since this should result in much merge clash.

Yes, preferable, I'd merge it all through drm-misc.

Best regards
Thomas

> 
> Christian.
> 
> Am 15.09.20 um 16:59 schrieb Thomas Zimmermann:
>> The GEM and PRIME related callbacks in struct drm_driver are
>> deprecated in
>> favor of GEM object functions in struct drm_gem_object_funcs. This
>> patchset
>> converts the remaining drivers to object functions and removes most of
>> the
>> obsolete interfaces.
>>
>> Patches #1 to #16 and #18 to #19 convert DRM drivers to GEM object
>> functions,
>> one by one. Each patch moves existing callbacks from struct drm_driver
>> to an
>> instance of struct drm_gem_object_funcs, and sets these funcs when the
>> GEM
>> object is initialized. The expection is .gem_prime_mmap. There are
>> different
>> ways of how drivers implement the callback, and moving it to GEM object
>> functions requires a closer review for each.
>>
>> Patch #17 fixes virtgpu to use GEM object functions where possible. The
>> driver recently introduced a function for one of the deprecated
>> callbacks.
>>
>> Patch #20 converts xlnx to CMA helper macros. There's no apparent reason
>> why the driver does the GEM setup on it's own. Using CMA helper macros
>> adds GEM object functions implicitly.
>>
>> With most of the GEM and PRIME moved to GEM object functions, related
>> code
>> in struct drm_driver and in the DRM core/helpers is being removed by
>> patch
>> #21.
>>
>> Further testing is welcome. I tested the drivers for which I have HW
>> available. These are gma500, i915, nouveau, radeon and vc4. The console,
>> Weston and Xorg apparently work with the patches applied.
>>
>> v2:
>>     * moved code in amdgpu and radeon
>>     * made several functions static in various drivers
>>     * updated TODO-list item
>>     * fix virtgpu
>>
>> Thomas Zimmermann (21):
>>    drm/amdgpu: Introduce GEM object functions
>>    drm/armada: Introduce GEM object functions
>>    drm/etnaviv: Introduce GEM object functions
>>    drm/exynos: Introduce GEM object functions
>>    drm/gma500: Introduce GEM object functions
>>    drm/i915: Introduce GEM object functions
>>    drm/mediatek: Introduce GEM object functions
>>    drm/msm: Introduce GEM object funcs
>>    drm/nouveau: Introduce GEM object functions
>>    drm/omapdrm: Introduce GEM object functions
>>    drm/pl111: Introduce GEM object functions
>>    drm/radeon: Introduce GEM object functions
>>    drm/rockchip: Convert to drm_gem_object_funcs
>>    drm/tegra: Introduce GEM object functions
>>    drm/vc4: Introduce GEM object functions
>>    drm/vgem: Introduce GEM object functions
>>    drm/virtgpu: Set PRIME export function in struct drm_gem_object_funcs
>>    drm/vkms: Introduce GEM object functions
>>    drm/xen: Introduce GEM object functions
>>    drm/xlnx: Initialize DRM driver instance with CMA helper macro
>>    drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver
>>
>>   Documentation/gpu/todo.rst                    |  7 +-
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c       |  6 --
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c       | 23 +++--
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h       |  5 --
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.c    |  1 +
>>   drivers/gpu/drm/armada/armada_drv.c           |  3 -
>>   drivers/gpu/drm/armada/armada_gem.c           | 12 ++-
>>   drivers/gpu/drm/armada/armada_gem.h           |  2 -
>>   drivers/gpu/drm/drm_gem.c                     | 35 ++------
>>   drivers/gpu/drm/drm_gem_cma_helper.c          |  6 +-
>>   drivers/gpu/drm/drm_prime.c                   | 17 ++--
>>   drivers/gpu/drm/etnaviv/etnaviv_drv.c         | 13 ---
>>   drivers/gpu/drm/etnaviv/etnaviv_drv.h         |  1 -
>>   drivers/gpu/drm/etnaviv/etnaviv_gem.c         | 19 ++++-
>>   drivers/gpu/drm/exynos/exynos_drm_drv.c       | 10 ---
>>   drivers/gpu/drm/exynos/exynos_drm_gem.c       | 15 ++++
>>   drivers/gpu/drm/gma500/framebuffer.c          |  2 +
>>   drivers/gpu/drm/gma500/gem.c                  | 18 +++-
>>   drivers/gpu/drm/gma500/gem.h                  |  3 +
>>   drivers/gpu/drm/gma500/psb_drv.c              |  9 --
>>   drivers/gpu/drm/gma500/psb_drv.h              |  2 -
>>   drivers/gpu/drm/i915/gem/i915_gem_object.c    | 21 ++++-
>>   drivers/gpu/drm/i915/gem/i915_gem_object.h    |  3 -
>>   drivers/gpu/drm/i915/i915_drv.c               |  4 -
>>   .../gpu/drm/i915/selftests/mock_gem_device.c  |  3 -
>>   drivers/gpu/drm/mediatek/mtk_drm_drv.c        |  5 --
>>   drivers/gpu/drm/mediatek/mtk_drm_gem.c        | 11 +++
>>   drivers/gpu/drm/msm/msm_drv.c                 | 13 ---
>>   drivers/gpu/drm/msm/msm_drv.h                 |  1 -
>>   drivers/gpu/drm/msm/msm_gem.c                 | 19 ++++-
>>   drivers/gpu/drm/nouveau/nouveau_drm.c         |  9 --
>>   drivers/gpu/drm/nouveau/nouveau_gem.c         | 13 +++
>>   drivers/gpu/drm/nouveau/nouveau_gem.h         |  2 +
>>   drivers/gpu/drm/nouveau/nouveau_prime.c       |  2 +
>>   drivers/gpu/drm/omapdrm/omap_drv.c            |  9 --
>>   drivers/gpu/drm/omapdrm/omap_gem.c            | 18 +++-
>>   drivers/gpu/drm/omapdrm/omap_gem.h            |  2 -
>>   drivers/gpu/drm/pl111/pl111_drv.c             |  5 +-
>>   drivers/gpu/drm/radeon/radeon_drv.c           | 23 +----
>>   drivers/gpu/drm/radeon/radeon_gem.c           | 31 ++++++-
>>   drivers/gpu/drm/rockchip/rockchip_drm_drv.c   |  5 --
>>   drivers/gpu/drm/rockchip/rockchip_drm_gem.c   | 10 +++
>>   drivers/gpu/drm/tegra/drm.c                   |  4 -
>>   drivers/gpu/drm/tegra/gem.c                   |  8 ++
>>   drivers/gpu/drm/vc4/vc4_bo.c                  | 21 ++++-
>>   drivers/gpu/drm/vc4/vc4_drv.c                 | 12 ---
>>   drivers/gpu/drm/vc4/vc4_drv.h                 |  1 -
>>   drivers/gpu/drm/vgem/vgem_drv.c               | 21 +++--
>>   drivers/gpu/drm/virtio/virtgpu_drv.c          |  1 -
>>   drivers/gpu/drm/virtio/virtgpu_object.c       |  1 +
>>   drivers/gpu/drm/vkms/vkms_drv.c               |  8 --
>>   drivers/gpu/drm/vkms/vkms_gem.c               | 13 +++
>>   drivers/gpu/drm/xen/xen_drm_front.c           | 44 ++++------
>>   drivers/gpu/drm/xen/xen_drm_front.h           |  2 +
>>   drivers/gpu/drm/xen/xen_drm_front_gem.c       | 15 ++++
>>   drivers/gpu/drm/xlnx/zynqmp_dpsub.c           | 14 +--
>>   include/drm/drm_drv.h                         | 85 +------------------
>>   57 files changed, 319 insertions(+), 349 deletions(-)
>>
>> -- 
>> 2.28.0
>>
> 

-- 
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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