linux-kernel - [PATCH v5 0/3] Add option to mmap GEM buffers cached

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Date:   Sun, 23 May 2021 18:04:12 +0100
From:   Paul Cercueil <paul@...pouillou.net>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     Christoph Hellwig <hch@...radead.org>, list@...ndingux.net,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH v5 0/3] Add option to mmap GEM buffers cached

V5 of my patchset which adds the option for having GEM buffers backed by
non-coherent memory.

Changes from V4:

- [2/3]: 
    - Rename to drm_fb_cma_sync_non_coherent
    - Invert loops for better cache locality
    - Only sync BOs that have the non-coherent flag
    - Properly sort includes
    - Move to drm_fb_cma_helper.c to avoid circular dependency

- [3/3]:
    - Fix drm_atomic_get_new_plane_state() used to retrieve the old
      state
    - Use custom drm_gem_fb_create()
    - Only check damage clips and sync DMA buffers if non-coherent
      buffers are used

Cheers,
-Paul

Paul Cercueil (3):
  drm: Add support for GEM buffers backed by non-coherent memory
  drm: Add and export function drm_fb_cma_sync_non_coherent
  drm/ingenic: Add option to alloc cached GEM buffers

 drivers/gpu/drm/drm_fb_cma_helper.c       | 46 ++++++++++++++++++
 drivers/gpu/drm/drm_gem_cma_helper.c      | 38 +++++++++++----
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 59 +++++++++++++++++++++--
 drivers/gpu/drm/ingenic/ingenic-drm.h     |  1 +
 drivers/gpu/drm/ingenic/ingenic-ipu.c     | 21 ++++++--
 include/drm/drm_fb_cma_helper.h           |  4 ++
 include/drm/drm_gem_cma_helper.h          |  3 ++
 7 files changed, 156 insertions(+), 16 deletions(-)

-- 
2.30.2