From: Thomas Zimmermann <tzimmermann@suse.de>
To: daniel@ffwll.ch, airlied@gmail.com, deller@gmx.de, javierm@redhat.com
Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org,
Thomas Zimmermann <tzimmermann@suse.de>
Subject: [PATCH 00/43] drm: Provide fbdev emulation per memory manager
Date: Tue, 12 Mar 2024 16:44:55 +0100 [thread overview]
Message-ID: <20240312154834.26178-1-tzimmermann@suse.de> (raw)
DRM provides 3 different memory managers with slightly different
characteristics: DMA-based, SHMEM-based and TTM. This effects fbdev
emulation as each requires different handling of mmap(). This series
reworks fbdev emualtion to provide an optimized emulation for each
of the memory managers.
Patch 1 fixes a minor bug in fbdev-generic.
Patches 2 to 8 implement fbdev-shmem, which is optimized for drivers
with SHMEM-based allocation. Patches 2 to 7 prepare deferred I/O to
support driver-custom page lookups. When the mmap'ed framebuffer sees
a pagefault, the deferred-I/O code can ask the graphics driver of the
page (instead of trying to detect it by itself). Using this hook,
patch 8 implements fbdev-shmem. The code is similar to fbdev-generic,
but does not require an additional shadow buffer for mmap(). Mmap'ed
pages are instead provided from the GEM buffer object. That saves a
few MiB of framebuffer memory and copying between the internal buffers.
Patches 9 to 20 convert SHMEM-based drivers to fbdev-shmem.
Patch 21 adds damage handling and deferred I/O to fbdev-dma. Such
code has been tested on the DMA-based omapdrm and can be adopted for
all drivers.
Patches 22 to 41 convert DMA-based drivers to fbdev-dma. These drivers
could not use it because of the missing support for damage handling.
Patch 42 renames fbdev-generic to fbdev-ttm. Only TTM-based drivers
still use it, so building it can be linked to TTM as well.
Patch 43 cleans up the documentation.
Tested with simpledrm, vc4 and amdgpu.
Thomas Zimmermann (43):
drm/fbdev-generic: Do not set physical framebuffer address
fbdev/deferred-io: Move pageref setup into separate helper
fbdev/deferred-io: Clean up pageref on lastclose
fbdev/deferred-io: Test screen_buffer for vmalloc'ed memory
fbdev/deferred-io: Test smem_start for I/O memory
fbdev/deferred-io: Always call get_page() for framebuffer pages
fbdev/deferred-io: Provide get_page hook in struct fb_deferred_io
drm/fbdev: Add fbdev-shmem
drm/ast: Use fbdev-shmem
drm/gud: Use fbdev-shmem
drm/hyperv: Use fbdev-shmem
drm/mgag200: Use fbdev-shmem
drm/solomon: Use fbdev-shmem
drm/tiny/cirrus: Use fbdev-shmem
drm/tiny/gm12u320: Use fbdev-shmem
drm/tiny/ofdrm: Use fbdev-shmem
drm/tiny/simpledrm: Use fbdev-shmem
drm/udl: Use fbdev-shmem
drm/virtio: Use fbdev-shmem
drm/vkms: Use fbdev-shmem
drm/fbdev-dma: Implement damage handling and deferred I/O
drm/arm/komeda: Use fbdev-dma
drm/hisilicon/kirin: Use fbdev-dma
drm/imx/lcdc: Use fbdev-dma
drm/ingenic: Use fbdev-dma
drm/mediatek: Use fbdev-dma
drm/panel/panel-ilitek-9341: Use fbdev-dma
drm/renesas/rcar-du: Use fbdev-dma
drm/renesas/rz-du: Use fbdev-dma
drm/renesas/shmobile: Use fbdev-dma
drm/rockchip: Use fbdev-dma
drm/tiny/hx8357d: Use fbdev-dma
drm/tiny/ili9163: Use fbdev-dma
drm/tiny/ili9225: Use fbdev-dma
drm/tiny/ili9341: Use fbdev-dma
drm/tiny/ili9486: Use fbdev-dma
drm/tiny/mi0283qt: Use fbdev-dma
drm/tiny/panel-mipi-dbi: Use fbdev-dma
drm/tiny/repaper: Use fbdev-dma
drm/tiny/st7586: Use fbdev-dma
drm/tiny/st7735r: Use fbdev-dma
drm/fbdev-generic: Convert to fbdev-ttm
drm/fbdev: Clean up fbdev documentation
Documentation/gpu/drm-kms-helpers.rst | 12 +-
Documentation/gpu/todo.rst | 13 -
drivers/gpu/drm/Makefile | 6 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 6 +-
.../gpu/drm/arm/display/komeda/komeda_drv.c | 4 +-
drivers/gpu/drm/ast/ast_drv.c | 4 +-
drivers/gpu/drm/drm_drv.c | 2 +-
drivers/gpu/drm/drm_fb_helper.c | 11 +-
drivers/gpu/drm/drm_fbdev_dma.c | 65 +++-
drivers/gpu/drm/drm_fbdev_shmem.c | 316 ++++++++++++++++++
.../{drm_fbdev_generic.c => drm_fbdev_ttm.c} | 81 +++--
drivers/gpu/drm/gud/gud_drv.c | 4 +-
.../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 4 +-
.../gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 4 +-
drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 4 +-
drivers/gpu/drm/imx/lcdc/imx-lcdc.c | 4 +-
drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 4 +-
drivers/gpu/drm/loongson/Kconfig | 1 +
drivers/gpu/drm/loongson/lsdc_drv.c | 4 +-
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 4 +-
drivers/gpu/drm/mgag200/mgag200_drv.c | 4 +-
drivers/gpu/drm/nouveau/nouveau_drm.c | 6 +-
drivers/gpu/drm/panel/panel-ilitek-ili9341.c | 4 +-
drivers/gpu/drm/qxl/qxl_drv.c | 4 +-
drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c | 4 +-
drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c | 4 +-
.../gpu/drm/renesas/shmobile/shmob_drm_drv.c | 4 +-
drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 4 +-
drivers/gpu/drm/solomon/ssd130x.c | 4 +-
drivers/gpu/drm/tiny/bochs.c | 4 +-
drivers/gpu/drm/tiny/cirrus.c | 4 +-
drivers/gpu/drm/tiny/gm12u320.c | 4 +-
drivers/gpu/drm/tiny/hx8357d.c | 4 +-
drivers/gpu/drm/tiny/ili9163.c | 4 +-
drivers/gpu/drm/tiny/ili9225.c | 4 +-
drivers/gpu/drm/tiny/ili9341.c | 4 +-
drivers/gpu/drm/tiny/ili9486.c | 4 +-
drivers/gpu/drm/tiny/mi0283qt.c | 4 +-
drivers/gpu/drm/tiny/ofdrm.c | 4 +-
drivers/gpu/drm/tiny/panel-mipi-dbi.c | 4 +-
drivers/gpu/drm/tiny/repaper.c | 4 +-
drivers/gpu/drm/tiny/simpledrm.c | 4 +-
drivers/gpu/drm/tiny/st7586.c | 4 +-
drivers/gpu/drm/tiny/st7735r.c | 4 +-
drivers/gpu/drm/udl/udl_drv.c | 4 +-
drivers/gpu/drm/vboxvideo/vbox_drv.c | 4 +-
drivers/gpu/drm/virtio/virtgpu_drv.c | 4 +-
drivers/gpu/drm/vkms/vkms_drv.c | 4 +-
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 4 +-
drivers/video/fbdev/core/fb_defio.c | 82 +++--
include/drm/drm_fbdev_generic.h | 15 -
include/drm/drm_fbdev_shmem.h | 15 +
include/drm/drm_fbdev_ttm.h | 15 +
include/drm/drm_mode_config.h | 4 +-
include/linux/fb.h | 1 +
55 files changed, 593 insertions(+), 210 deletions(-)
create mode 100644 drivers/gpu/drm/drm_fbdev_shmem.c
rename drivers/gpu/drm/{drm_fbdev_generic.c => drm_fbdev_ttm.c} (76%)
delete mode 100644 include/drm/drm_fbdev_generic.h
create mode 100644 include/drm/drm_fbdev_shmem.h
create mode 100644 include/drm/drm_fbdev_ttm.h
--
2.44.0
next reply other threads:[~2024-03-12 15:48 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-12 15:44 Thomas Zimmermann [this message]
2024-03-12 15:44 ` [PATCH 01/43] drm/fbdev-generic: Do not set physical framebuffer address Thomas Zimmermann
2024-03-17 12:43 ` Javier Martinez Canillas
2024-03-18 8:19 ` Thomas Zimmermann
2024-03-18 2:35 ` Zack Rusin
2024-03-18 7:59 ` Thomas Zimmermann
2024-03-18 8:44 ` Maxime Ripard
2024-03-18 9:48 ` Javier Martinez Canillas
2024-03-18 22:22 ` [01/43] " Sui Jingfeng
2024-03-12 15:44 ` [PATCH 02/43] fbdev/deferred-io: Move pageref setup into separate helper Thomas Zimmermann
2024-03-17 12:49 ` Javier Martinez Canillas
2024-03-12 15:44 ` [PATCH 03/43] fbdev/deferred-io: Clean up pageref on lastclose Thomas Zimmermann
2024-03-17 13:19 ` Javier Martinez Canillas
2024-03-12 15:44 ` [PATCH 04/43] fbdev/deferred-io: Test screen_buffer for vmalloc'ed memory Thomas Zimmermann
2024-03-17 13:20 ` Javier Martinez Canillas
2024-03-12 15:45 ` [PATCH 05/43] fbdev/deferred-io: Test smem_start for I/O memory Thomas Zimmermann
2024-03-18 17:03 ` Javier Martinez Canillas
2024-03-12 15:45 ` [PATCH 06/43] fbdev/deferred-io: Always call get_page() for framebuffer pages Thomas Zimmermann
2024-03-18 17:04 ` Javier Martinez Canillas
2024-03-12 15:45 ` [PATCH 07/43] fbdev/deferred-io: Provide get_page hook in struct fb_deferred_io Thomas Zimmermann
2024-03-18 17:11 ` Javier Martinez Canillas
2024-03-12 15:45 ` [PATCH 08/43] drm/fbdev: Add fbdev-shmem Thomas Zimmermann
2024-03-12 16:14 ` Geert Uytterhoeven
2024-03-13 8:19 ` Thomas Zimmermann
2024-03-13 9:03 ` Geert Uytterhoeven
2024-03-13 9:24 ` Thomas Zimmermann
2024-03-13 9:56 ` Geert Uytterhoeven
2024-03-12 15:45 ` [PATCH 09/43] drm/ast: Use fbdev-shmem Thomas Zimmermann
2024-03-13 14:03 ` Jocelyn Falempe
2024-03-12 15:45 ` [PATCH 10/43] drm/gud: " Thomas Zimmermann
2024-03-17 19:21 ` Noralf Trønnes
2024-03-12 15:45 ` [PATCH 11/43] drm/hyperv: " Thomas Zimmermann
2024-03-12 16:08 ` Deepak Rawat
2024-03-12 15:45 ` [PATCH 12/43] drm/mgag200: " Thomas Zimmermann
2024-03-13 14:03 ` Jocelyn Falempe
2024-03-18 7:56 ` Thomas Zimmermann
2024-03-18 9:23 ` Jocelyn Falempe
2024-03-12 15:45 ` [PATCH 13/43] drm/solomon: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 14/43] drm/tiny/cirrus: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 15/43] drm/tiny/gm12u320: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 16/43] drm/tiny/ofdrm: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 17/43] drm/tiny/simpledrm: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 18/43] drm/udl: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 19/43] drm/virtio: " Thomas Zimmermann
2024-03-28 14:55 ` Dmitry Osipenko
2024-03-12 15:45 ` [PATCH 20/43] drm/vkms: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 21/43] drm/fbdev-dma: Implement damage handling and deferred I/O Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 22/43] drm/arm/komeda: Use fbdev-dma Thomas Zimmermann
2024-03-13 10:53 ` Liviu Dudau
2024-03-12 15:45 ` [PATCH 23/43] drm/hisilicon/kirin: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 24/43] drm/imx/lcdc: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 25/43] drm/ingenic: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 26/43] drm/mediatek: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 27/43] drm/panel/panel-ilitek-9341: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 28/43] drm/renesas/rcar-du: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 29/43] drm/renesas/rz-du: " Thomas Zimmermann
2024-03-12 19:14 ` Biju Das
2024-03-13 8:30 ` Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 30/43] drm/renesas/shmobile: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 31/43] drm/rockchip: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 32/43] drm/tiny/hx8357d: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 33/43] drm/tiny/ili9163: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 34/43] drm/tiny/ili9225: " Thomas Zimmermann
2024-03-12 22:20 ` David Lechner
2024-03-12 15:45 ` [PATCH 35/43] drm/tiny/ili9341: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 36/43] drm/tiny/ili9486: " Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 37/43] drm/tiny/mi0283qt: " Thomas Zimmermann
2024-03-17 19:21 ` Noralf Trønnes
2024-03-12 15:45 ` [PATCH 38/43] drm/tiny/panel-mipi-dbi: " Thomas Zimmermann
2024-03-17 19:22 ` Noralf Trønnes
2024-03-12 15:45 ` [PATCH 39/43] drm/tiny/repaper: " Thomas Zimmermann
2024-03-17 19:22 ` Noralf Trønnes
2024-03-12 15:45 ` [PATCH 40/43] drm/tiny/st7586: " Thomas Zimmermann
2024-03-12 22:21 ` David Lechner
2024-03-12 15:45 ` [PATCH 41/43] drm/tiny/st7735r: " Thomas Zimmermann
2024-03-12 22:21 ` David Lechner
2024-03-12 15:45 ` [PATCH 42/43] drm/fbdev-generic: Convert to fbdev-ttm Thomas Zimmermann
2024-03-12 15:45 ` [PATCH 43/43] drm/fbdev: Clean up fbdev documentation Thomas Zimmermann
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