linux-kernel - [PATCH v2 0/3] drm: Use iommu_paging_domain

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Message-Id: <20240902014700.66095-1-baolu.lu@linux.intel.com>
Date: Mon,  2 Sep 2024 09:46:57 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: Karol Herbst <kherbst@...hat.com>,
	Lyude Paul <lyude@...hat.com>,
	Danilo Krummrich <dakr@...hat.com>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Sandy Huang <hjc@...k-chips.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Mikko Perttunen <mperttunen@...dia.com>,
	Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Kevin Tian <kevin.tian@...el.com>
Cc: dri-devel@...ts.freedesktop.org,
	nouveau@...ts.freedesktop.org,
	linux-tegra@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-media@...r.kernel.org,
	iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH v2 0/3] drm: Use iommu_paging_domain_alloc()

Commit <17de3f5fdd35> ("iommu: Retire bus ops") removes iommu ops from
the bus structure. The iommu subsystem no longer relies on bus for
operations. So iommu_domain_alloc() interface is no longer relevant.

A new helper named iommu_paging_domain_alloc() was introduced in the
iommu subsystem as a replacement of iommu_domain_alloc(). This helper
relies on the device for IOMMU API use instead of the bus.

The replacement work started from this series:

https://lore.kernel.org/linux-iommu/20240610085555.88197-1-baolu.lu@linux.intel.com/

Several patches have already been merged into the mainline kernel, but
we've decided to route all remaining ones through the subsystem tree.

Change log:
v2:
 - Patch 3/3: use dev->dev.parent as the input for
   iommu_paging_domain_alloc(), suggested by Thierry Reding.
   https://lore.kernel.org/linux-iommu/qyvyd2ftebjlgmzyayfvxsqa64c4wgx7keix3a6eexdspbvawy@a5ffnm5h5tgp/

v1:
 - https://lore.kernel.org/linux-iommu/20240812071034.9443-1-baolu.lu@linux.intel.com/

Lu Baolu (3):
  drm/nouveau/tegra: Use iommu_paging_domain_alloc()
  drm/rockchip: Use iommu_paging_domain_alloc()
  drm/tegra: Use iommu_paging_domain_alloc()

 drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c |  4 ++--
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c        | 10 +++++++---
 drivers/gpu/drm/tegra/drm.c                        |  5 +++--
 3 files changed, 12 insertions(+), 7 deletions(-)

-- 
2.34.1