From: Thomas Zimmermann <tzimmermann@suse.de>
To: maarten.lankhorst@linux.intel.com, mripard@kernel.org,
airlied@linux.ie, daniel@ffwll.ch, sam@ravnborg.org,
alexander.deucher@amd.com, christian.koenig@amd.com,
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Cc: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
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Thomas Zimmermann <tzimmermann@suse.de>
Subject: [PATCH v5 00/10] Support GEM object mappings from I/O memory
Date: Tue, 20 Oct 2020 14:20:36 +0200 [thread overview]
Message-ID: <20201020122046.31167-1-tzimmermann@suse.de> (raw)
DRM's fbdev console uses regular load and store operations to update
framebuffer memory. The bochs driver on sparc64 requires the use of
I/O-specific load and store operations. We have a workaround, but need
a long-term solution to the problem.
This patchset changes GEM's vmap/vunmap interfaces to forward pointers
of type struct dma_buf_map and updates the generic fbdev emulation to
use them correctly. This enables I/O-memory operations on all framebuffers
that require and support them.
Patches #1 to #4 prepare VRAM helpers and drivers.
Next is the update of the GEM vmap functions. Patch #5 adds vmap and vunmap
that is usable with TTM-based GEM drivers, and patch #6 updates GEM's
vmap/vunmap callback to forward instances of type struct dma_buf_map. While
the patch touches many files throughout the DRM modules, the applied changes
are mostly trivial interface fixes. Several TTM-based GEM drivers now use
the new vmap code. Patch #7 updates GEM's internal vmap/vunmap functions to
forward struct dma_buf_map.
With struct dma_buf_map propagated through the layers, patches #8 to #10
convert DRM clients and generic fbdev emulation to use it. Updating the
fbdev framebuffer will select the correct functions, either for system or
I/O memory.
v5:
* rebase onto latest TTM changes (Chrsitian)
* support TTM premapped memory correctly (Christian)
* implement fb_read/fb_write internally (Sam, Daniel)
* cleanups
v4:
* provide TTM vmap/vunmap plus GEM helpers and convert drivers
over (Christian, Daniel)
* remove several empty functions
* more TODOs and documentation (Daniel)
v3:
* recreate the whole patchset on top of struct dma_buf_map
v2:
* RFC patchset
Thomas Zimmermann (10):
drm/vram-helper: Remove invariant parameters from internal kmap
function
drm/cma-helper: Remove empty drm_gem_cma_prime_vunmap()
drm/etnaviv: Remove empty etnaviv_gem_prime_vunmap()
drm/exynos: Remove empty exynos_drm_gem_prime_{vmap,vunmap}()
drm/ttm: Add vmap/vunmap to TTM and TTM GEM helpers
drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM
backends
drm/gem: Update internal GEM vmap/vunmap interfaces to use struct
dma_buf_map
drm/gem: Store client buffer mappings as struct dma_buf_map
dma-buf-map: Add memcpy and pointer-increment interfaces
drm/fb_helper: Support framebuffers in I/O memory
Documentation/gpu/todo.rst | 37 ++-
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 36 ---
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h | 2 -
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 5 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 1 -
drivers/gpu/drm/ast/ast_cursor.c | 27 +--
drivers/gpu/drm/ast/ast_drv.h | 7 +-
drivers/gpu/drm/bochs/bochs_kms.c | 1 -
drivers/gpu/drm/drm_client.c | 38 +--
drivers/gpu/drm/drm_fb_helper.c | 248 ++++++++++++++++++--
drivers/gpu/drm/drm_gem.c | 29 ++-
drivers/gpu/drm/drm_gem_cma_helper.c | 27 +--
drivers/gpu/drm/drm_gem_shmem_helper.c | 48 ++--
drivers/gpu/drm/drm_gem_ttm_helper.c | 38 +++
drivers/gpu/drm/drm_gem_vram_helper.c | 117 +++++----
drivers/gpu/drm/drm_internal.h | 5 +-
drivers/gpu/drm/drm_prime.c | 14 +-
drivers/gpu/drm/etnaviv/etnaviv_drv.h | 3 +-
drivers/gpu/drm/etnaviv/etnaviv_gem.c | 1 -
drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 12 +-
drivers/gpu/drm/exynos/exynos_drm_gem.c | 12 -
drivers/gpu/drm/exynos/exynos_drm_gem.h | 2 -
drivers/gpu/drm/lima/lima_gem.c | 6 +-
drivers/gpu/drm/lima/lima_sched.c | 11 +-
drivers/gpu/drm/mgag200/mgag200_mode.c | 10 +-
drivers/gpu/drm/nouveau/Kconfig | 1 +
drivers/gpu/drm/nouveau/nouveau_bo.h | 2 -
drivers/gpu/drm/nouveau/nouveau_gem.c | 6 +-
drivers/gpu/drm/nouveau/nouveau_gem.h | 2 -
drivers/gpu/drm/nouveau/nouveau_prime.c | 20 --
drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 14 +-
drivers/gpu/drm/qxl/qxl_display.c | 11 +-
drivers/gpu/drm/qxl/qxl_draw.c | 14 +-
drivers/gpu/drm/qxl/qxl_drv.h | 11 +-
drivers/gpu/drm/qxl/qxl_object.c | 31 ++-
drivers/gpu/drm/qxl/qxl_object.h | 2 +-
drivers/gpu/drm/qxl/qxl_prime.c | 12 +-
drivers/gpu/drm/radeon/radeon.h | 1 -
drivers/gpu/drm/radeon/radeon_gem.c | 7 +-
drivers/gpu/drm/radeon/radeon_prime.c | 20 --
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 22 +-
drivers/gpu/drm/rockchip/rockchip_drm_gem.h | 4 +-
drivers/gpu/drm/tiny/cirrus.c | 10 +-
drivers/gpu/drm/tiny/gm12u320.c | 10 +-
drivers/gpu/drm/ttm/ttm_bo_util.c | 72 ++++++
drivers/gpu/drm/udl/udl_modeset.c | 8 +-
drivers/gpu/drm/vboxvideo/vbox_mode.c | 11 +-
drivers/gpu/drm/vc4/vc4_bo.c | 7 +-
drivers/gpu/drm/vc4/vc4_drv.h | 2 +-
drivers/gpu/drm/vgem/vgem_drv.c | 16 +-
drivers/gpu/drm/vkms/vkms_plane.c | 15 +-
drivers/gpu/drm/vkms/vkms_writeback.c | 22 +-
drivers/gpu/drm/xen/xen_drm_front_gem.c | 18 +-
drivers/gpu/drm/xen/xen_drm_front_gem.h | 6 +-
include/drm/drm_client.h | 7 +-
include/drm/drm_gem.h | 5 +-
include/drm/drm_gem_cma_helper.h | 3 +-
include/drm/drm_gem_shmem_helper.h | 4 +-
include/drm/drm_gem_ttm_helper.h | 6 +
include/drm/drm_gem_vram_helper.h | 14 +-
include/drm/drm_mode_config.h | 12 -
include/drm/ttm/ttm_bo_api.h | 28 +++
include/linux/dma-buf-map.h | 93 +++++++-
64 files changed, 852 insertions(+), 436 deletions(-)
--
2.28.0
next reply other threads:[~2020-10-20 12:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-20 12:20 Thomas Zimmermann [this message]
2020-10-20 12:20 ` [PATCH v5 01/10] drm/vram-helper: Remove invariant parameters from internal kmap function Thomas Zimmermann
2020-10-20 12:20 ` [PATCH v5 02/10] drm/cma-helper: Remove empty drm_gem_cma_prime_vunmap() Thomas Zimmermann
2020-10-20 12:20 ` [PATCH v5 03/10] drm/etnaviv: Remove empty etnaviv_gem_prime_vunmap() Thomas Zimmermann
2020-10-20 12:20 ` [PATCH v5 04/10] drm/exynos: Remove empty exynos_drm_gem_prime_{vmap,vunmap}() Thomas Zimmermann
2020-10-20 12:20 ` [PATCH v5 05/10] drm/ttm: Add vmap/vunmap to TTM and TTM GEM helpers Thomas Zimmermann
2020-10-20 13:39 ` Christian König
2020-10-20 12:20 ` [PATCH v5 06/10] drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM backends Thomas Zimmermann
2020-10-20 12:20 ` [PATCH v5 07/10] drm/gem: Update internal GEM vmap/vunmap interfaces to use struct dma_buf_map Thomas Zimmermann
2020-10-20 12:20 ` [PATCH v5 08/10] drm/gem: Store client buffer mappings as " Thomas Zimmermann
2020-10-22 8:49 ` Daniel Vetter
2020-10-22 9:18 ` Thomas Zimmermann
2020-10-22 10:21 ` Daniel Vetter
2020-10-20 12:20 ` [PATCH v5 09/10] dma-buf-map: Add memcpy and pointer-increment interfaces Thomas Zimmermann
2020-11-05 10:07 ` Linus Walleij
2020-11-05 10:37 ` Thomas Zimmermann
2020-11-05 12:54 ` Daniel Vetter
2020-10-20 12:20 ` [PATCH v5 10/10] drm/fb_helper: Support framebuffers in I/O memory Thomas Zimmermann
2020-10-22 8:05 ` Daniel Vetter
2020-10-22 8:37 ` Thomas Zimmermann
2020-10-22 8:51 ` Daniel Vetter
2020-10-24 20:38 ` Sam Ravnborg
2020-10-26 7:50 ` Thomas Zimmermann
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