Commit Graph

84980 Commits

Author SHA1 Message Date
Tianci.Yin
ae460cd566 drm/amdgpu: add athub v3_0 ip block
Add support for athub v3.0

Signed-off-by: Tianci.Yin <tianci.yin@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:57:10 -04:00
Hawking Zhang
f41c963972 drm/amdgpu: add athub v3_0_0 ip headers v6
Add athub v3_0_0 register offset and shift masks
header files (Hawking)

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:57:06 -04:00
Likun Gao
55a800da49 drm/amdgpu/discovery: Enable PSP for PSP 13.0.0
Enable PSP on PSP IP version 13.0.0

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:57:00 -04:00
Likun Gao
7f318f4e30 drm/amdgpu: add tracking for the enablement of SCPM
Add parmeter to shows whether SCPM feature is enabled or not, and
whether is valid.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:56:51 -04:00
Likun Gao
a6b6d38ed8 drm/amdgpu: rework psp firmware name
Use the new helper for deriving the fw name from
the IP version.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:55:30 -04:00
Likun Gao
911a75043f drm/amdgpu: support psp v13_0_0 microcode init
Support psp v13_0_0 microcode init.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:55:27 -04:00
Likun Gao
e995e2ecdf drm/amdgpu: add support for spl fw load on psp v13
Support for spl firmware load on psp v13.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:55:23 -04:00
Likun Gao
47a2038554 drm/amdgpu: extend PSP GFX FW type
Extend PSP GFX FW type to support IMU, LSDMA, SDMA v6, RS64 MES related
fw load.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:55:18 -04:00
Hawking Zhang
5fea10d5a9 drm/amdgpu: support print psp v2_0 hdr debug information
print out psp firmware v2_0 hdr information for debugging
purpose

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:55:13 -04:00
Alice Wong
e2c34219d1 drm/amdgpu/psp: deallocate memory when psp_load_fw failed
psp_load_fw failure would cause memory leak for psp tmr and psp ring
because psp_hw_init is not called as psp block is not fully initialized.
Clean up psp tmr and psp ring when psp_load_fw fail by calling
psp_free_shared_bufs and psp_ring_destroy.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alice Wong <shiwei.wong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:55:07 -04:00
Alex Deucher
da40bf8f93 drm/amdgpu/psp: move shared buffer frees into single function
So we can properly clean up if any of the TAs or TMR fails
to properly initialize or terminate.  This avoids any
memory leaks in the error case.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:55:05 -04:00
Alex Deucher
fb4f4f4256 drm/amdgpu/psp: fix memory leak in terminate functions
Make sure we free the memory even if the unload fails.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:55:02 -04:00
Alex Deucher
f03d97b0bd drm/amdgpu/psp: drop load/unload/init_shared_buf wrappers
Just call the load/unload/init_shared_buf functions
directly.  Makes the code easier to follow.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:54:58 -04:00
Elena Sakhnovitch
57301181a5 drm/amd/pm: Disable fan control if not supported
On Sienna Cichild, not all platforms use PMFW based fan control
(ex: fanless systems). On such ASICs fan control by PMFW will be
disabled in PPTable. Disable hwmon knobs for fan control also as
it is not possible to report or control fan speed on such platforms
through driver.

v3: FeaturesToRun casted as uint64_t

Signed-off-by: Elena Sakhnovitch  <elena.sakhnovitch@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:54:50 -04:00
Hawking Zhang
996ea8591b drm/amdgpu: init smuio v13_0_6 callbacks
initialize smuio callback for soc21

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:54:46 -04:00
Alex Deucher
b95b539168 drm/amdgpu/psp: move PSP memory alloc from hw_init to sw_init
Memory allocations should be done in sw_init.  hw_init should
just be hardware programming needed to initialize the IP block.
This is how most other IP blocks work.  Move the GPU memory
allocations from psp hw_init to psp sw_init and move the memory
free to sw_fini.  This also fixes a potential GPU memory leak
if psp hw_init fails.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:54:41 -04:00
Hawking Zhang
e6e405e048 drm/amdgpu: add smuio v13_0_6 support
add smuio v13_0_6 callbacks to support read
rom image

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:54:38 -04:00
Hawking Zhang
55437d3bf4 drm/amdgpu: add smuio v13_0_6 ip headers v4
Add smuio v13_0_6 register offset and shift masks
header files (Hawking)

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:54:35 -04:00
Elena Sakhnovitch
20f5e6cf3b drm/amdgpu: Remove trailing space
Clean up trailing space in file sienna_cichlid_ppt.c.

Signed-off-by: Elena Sakhnovitch <elena.sakhnovitch@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:54:11 -04:00
Likun Gao
1761e5efab drm/amdgpu/discovery: add HDP v6
Enable HDP v6 on asics where it is present.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:54:01 -04:00
Likun Gao
563fcfbf31 drm/amdgpu: add hdp version 6 functions
Unify hdp related function into hdp structure for hdp version 6.
V2: Remove hdp invalidate function as hdp v6 doesn't have read cache.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:58 -04:00
Philip Yang
068421b173 drm/amdgpu: Free user pages if kvmalloc_array fails
To cleanup the BOs of bo_list which have got user pages.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:40 -04:00
Hawking Zhang
11c4328a82 drm/amdgpu: add hdp v6_0_0 ip headers v4
Add hdp v6_0_0 register offset and shift masks
header files (Hawking)

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:34 -04:00
pengfuyuan
4de0f42974 gpu/drm/radeon: Fix spelling typo in comments
Fix spelling typo in comments.

Signed-off-by: pengfuyuan <pengfuyuan@kylinos.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:30 -04:00
Minghao Chi
364d453f4d drm/amdgpu: simplify the return expression of navi10_ih_hw_init()
Simplify the return expression.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:28 -04:00
Minghao Chi
3453677aea drm/amdgpu: simplify the return expression of iceland_ih_hw_init
Simplify the return expression.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:18 -04:00
Likun Gao
2929a6bfa1 drm/amdgpu/discovery: add IH v6
Enable IH v6 on asics where it is present.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:15 -04:00
Stanley.Yang
6e02c0ed4b drm/amdgpu: add ih v6_0 ip block v2
This adds ih v6_0 ip block support.  IH is the
interrupt handler.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:12 -04:00
Likun Gao
2913b567ce drm/amd/smu: Increace dpm level count only for smu v13.0.2
Only V13.0.2 on SMU v13 will get 0 based max level from fw and
increment by one, other ASIC will not need for this.
V2: replace the asic_type check with ip versioning check.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:53:02 -04:00
Stanley Yang
db56aebd81 drm/amdgpu: add soc21 ih clientid definition
Define soc21 ih clientid

Signed-off-by: Stanley Yang <Stanley.Yang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:52:59 -04:00
Hawking Zhang
d71093aa15 drm/amdgpu: add osssys v6_0_0 ip headers v4
Add osssys v6_0_0 register offset and shift masks
header files (Hawking)

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:52:56 -04:00
Likun Gao
2c0e7ddd1f drm/amdgpu/discovery: add NBIO 4.3 Support
Enable NBIO 4.3 on asics where it is present.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:52:53 -04:00
Stanley.Yang
0d09a60e3e drm/amdgpu: add nbio v4_3_0 ip block v2
This adds nbio v4_3_0 ip block support

Changed from v1:
use WREG32_SOC15/RREG32_SOC15 instead of
WREG32_PCIE/RREG32_PCIE
remove the programming of PCIE_CONFIG_CNTL

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:52:44 -04:00
Hawking Zhang
e19920c6a0 drm/amdgpu: add nbio v4_3_0 ip headers v6
Add nbio v4_3_0 register offset and shift masks
header files (Hawking)

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:52:41 -04:00
Likun Gao
759693aced drm/amdgpu/discovery: add soc21 common Support
Enable soc21 common support on asics where it is present.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:52:35 -04:00
Harry Wentland
0ee42ab701 drm/amd/display: Avoid reading audio pattern past AUDIO_CHANNELS_COUNT
A faulty receiver might report an erroneous channel count. We
should guard against reading beyond AUDIO_CHANNELS_COUNT as
that would overflow the dpcd_pattern_period array.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-04 09:51:40 -04:00
Kefeng Wang
ea3ce08cb4 drm/i915: use IOMEM_ERR_PTR() directly
Use IOMEM_ERR_PTR() instead of self defined IO_ERR_PTR().

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220503144937.679424-1-tvrtko.ursulin@linux.intel.com
2022-05-04 13:10:49 +01:00
Lucas Stach
e123b4edb2 drm/etnaviv: avoid cleaning up sched_job when submit succeeded
While the labels may mislead the casual reader, the tail of the function
etnaviv_ioctl_gem_submit is always executed, as a lot of the structures
set up in this function need to be cleaned up regardless of whether the
submit succeeded or failed.

An exception is the newly added drm_sched_job_cleanup, which must only
be called when the submit failed before handing the job to the
scheduler.

Fixes: b827c84f5e ("drm/etnaviv: Use scheduler dependency handling")
Reported-by: Michael Walle <michael@walle.cc>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504090229.2506560-1-l.stach@pengutronix.de
2022-05-04 14:09:34 +02:00
Raphael Gallais-Pou
420f95b0ad drm: fix typo in comment
Fix typo in a doxygen comment (replaced green by blue) in drm_color_mgmt.c

Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220426131912.3850354-1-raphael.gallais-pou@foss.st.com
2022-05-04 14:09:34 +02:00
Andy Yan
604be85547 drm/rockchip: Add VOP2 driver
The VOP2 unit is found on Rockchip SoCs beginning with rk3566/rk3568.
It replaces the VOP unit found in the older Rockchip SoCs.

This driver has been derived from the downstream Rockchip Kernel and
heavily modified:

- All nonstandard DRM properties have been removed
- dropped struct vop2_plane_state and pass around less data between
  functions
- Dropped all DRM_FORMAT_* not known on upstream
- rework register access to get rid of excessively used macros
- Drop all waiting for framesyncs

The driver is tested with HDMI and MIPI-DSI display on a RK3568-EVB
board. Overlay support is tested with the modetest utility. AFBC support
on the cluster windows is tested with weston-simple-dmabuf-egl on
weston using the (yet to be upstreamed) panfrost driver support.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Co-Developed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Michael Riesch <michael.riesch@wolfvision.net>
[dt-binding-header:]
Acked-by: Rob Herring <robh@kernel.org>
[moved dt-binding header from dt-nodes patch to here
 and made checkpatch --strict happier]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220422072841.2206452-23-s.hauer@pengutronix.de
2022-05-04 14:05:47 +02:00
Sascha Hauer
b382406a2c drm/rockchip: Make VOP driver optional
With upcoming VOP2 support VOP won't be the only choice anymore, so make
the VOP driver optional.

This also adds a dependency from ROCKCHIP_ANALOGIX_DP to ROCKCHIP_VOP,
because that driver currently only links and works with the VOP driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220422072841.2206452-22-s.hauer@pengutronix.de
2022-05-04 14:05:47 +02:00
Fabien Parent
841e512ffb drm/bridge: ite-it6505: add missing Kconfig option select
The IT6505 is using functions provided by the DRM_DP_HELPER driver.
In order to avoid having the bridge enabled but the helper disabled,
let's add a select in order to be sure that the DP helper functions are
always available.

Fixes: b5c84a9edc ("drm/bridge: add it6505 driver")
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220426141536.274727-1-fparent@baylibre.com
2022-05-04 10:14:16 +02:00
Christian König
8d62a974ac drm/amdgpu: fix drm-next merge fallout
That hunk somehow got missing while solving the conflict between the TTM
and AMDGPU changes for drm-next.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220503063613.46925-1-christian.koenig@amd.com
2022-05-04 04:20:53 +10:00
Stuart Summers
448a54ace4 drm/i915/pvc: add initial Ponte Vecchio definitions
Additional blitter and media engines will be enabled later.

Bspec: 44481, 44482
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220502163417.2635462-2-matthew.d.roper@intel.com
2022-05-03 10:34:36 -07:00
Saurabh Sengar
6733dd4af7 drm/hyperv: Add error message for fb size greater than allocated
Add error message when the size of requested framebuffer is more than
the allocated size by vmbus mmio region for framebuffer.

Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Link: https://lore.kernel.org/r/1649737739-10113-1-git-send-email-ssengar@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
2022-05-03 15:08:39 +00:00
Tvrtko Ursulin
0de2cc0e2b drm/i915: Fix assert in i915_ggtt_pin
Use lockdep_assert_not_held to simplify and correct the code. Otherwise
false positive are hit if lock state is uknown like after a previous
taint.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220429140757.651406-1-tvrtko.ursulin@linux.intel.com
2022-05-03 15:45:33 +01:00
Thomas Zimmermann
d7442505de drm/simpledrm: Use fbdev defaults for shadow buffering
Don't select shadow buffering for the fbdev console explicitly. The
fbdev emulation's heuristic will enable it for any framebuffer with
.dirty callback.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220303205839.28484-2-tzimmermann@suse.de
2022-05-03 16:04:22 +02:00
Thomas Zimmermann
e2d8b4289c fbdev: Use pageref offset for deferred-I/O writeback
Use pageref->offset instead of page->index for deferred-I/O writeback
where appropriate. Distinguishes between file-mapping offset and video-
memory offset. While at it, also remove unnecessary references to
struct page.

Fbdev's deferred-I/O code uses the two related page->index and
pageref->offset. The former is the page offset in the mapped file,
the latter is the byte offset in the video memory (or fbdev screen
buffer). It's the same value for fbdev drivers, but for DRM the values
can be different. Because GEM buffer objects are mapped at an offset
in the DRM device file, page->index has this offset added to it as well.
We currently don't hit this case in DRM, because all affected mappings
of GEM memory are performed with an internal, intermediate shadow buffer.

The value of page->index is required by page_mkclean(), which we
call to reset the mappings during the writeback phase of the deferred
I/O. The value of pageref->offset is for conveniently getting an offset
into video memory in fb helpers.

v4:
	* fix commit message (Javier)

Suggested-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220429100834.18898-6-tzimmermann@suse.de
2022-05-03 16:04:22 +02:00
Thomas Zimmermann
e80eec1b87 fbdev: Rename pagelist to pagereflist for deferred I/O
Rename various instances of pagelist to pagereflist. The list now
stores pageref structures, so the new name is more appropriate.

In their write-back helpers, several fbdev drivers refer to the
pageref list in struct fb_deferred_io instead of using the one
supplied as argument to the function. Convert them over to the
supplied one. It's the same instance, so no change of behavior
occurs.

v4:
	* fix commit message (Javier)

Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220429100834.18898-5-tzimmermann@suse.de
2022-05-03 16:04:22 +02:00
Thomas Zimmermann
56c134f7f1 fbdev: Track deferred-I/O pages in pageref struct
Store the per-page state for fbdev's deferred I/O in struct
fb_deferred_io_pageref. Maintain a list of pagerefs for the pages
that have to be written back to video memory. Update all affected
drivers.

As with pages before, fbdev acquires a pageref when an mmaped page
of the framebuffer is being written to. It holds the pageref in a
list of all currently written pagerefs until it flushes the written
pages to video memory. Writeback occurs periodically. After writeback
fbdev releases all pagerefs and builds up a new dirty list until the
next writeback occurs.

Using pagerefs has a number of benefits.

For pages of the framebuffer, the deferred I/O code used struct
page.lru as an entry into the list of dirty pages. The lru field is
owned by the page cache, which makes deferred I/O incompatible with
some memory pages (e.g., most notably DRM's GEM SHMEM allocator).
struct fb_deferred_io_pageref now provides an entry into a list of
dirty framebuffer pages, freeing lru for use with the page cache.

Drivers also assumed that struct page.index is the page offset into
the framebuffer. This is not true for DRM buffers, which are located
at various offset within a mapped area. struct fb_deferred_io_pageref
explicitly stores an offset into the framebuffer. struct page.index
is now only the page offset into the mapped area.

These changes will allow DRM to use fbdev deferred I/O without an
intermediate shadow buffer.

v3:
	* use pageref->offset for sorting
	* fix grammar in comment
v2:
	* minor fixes in commit message

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220429100834.18898-3-tzimmermann@suse.de
2022-05-03 16:04:22 +02:00