linux-toradex.git/drivers/gpu/drm/etnaviv, branch v5.0 Linux kernel for Apalis and Colibri modules Remove 'type' argument from access_ok() function 2019-01-04T02:57:57+00:00 Linus Torvalds torvalds@linux-foundation.org 2019-01-04T02:57:57+00:00 96d4f267e40f9509e8a66e2b39e8b95655617693 Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument of the user address range verification function since we got rid of the old racy i386-only code to walk page tables by hand. It existed because the original 80386 would not honor the write protect bit when in kernel mode, so you had to do COW by hand before doing any user access. But we haven't supported that in a long time, and these days the 'type' argument is a purely historical artifact. A discussion about extending 'user_access_begin()' to do the range checking resulted this patch, because there is no way we're going to move the old VERIFY_xyz interface to that model. And it's best done at the end of the merge window when I've done most of my merges, so let's just get this done once and for all. This patch was mostly done with a sed-script, with manual fix-ups for the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form. There were a couple of notable cases: - csky still had the old "verify_area()" name as an alias. - the iter_iov code had magical hardcoded knowledge of the actual values of VERIFY_{READ,WRITE} (not that they mattered, since nothing really used it) - microblaze used the type argument for a debug printout but other than those oddities this should be a total no-op patch. I tried to fix up all architectures, did fairly extensive grepping for access_ok() uses, and the changes are trivial, but I may have missed something. Any missed conversion should be trivially fixable, though. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.

It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access.  But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.

A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model.  And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.

This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.

There were a couple of notable cases:

 - csky still had the old "verify_area()" name as an alias.

 - the iter_iov code had magical hardcoded knowledge of the actual
   values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
   really used it)

 - microblaze used the type argument for a debug printout

but other than those oddities this should be a total no-op patch.

I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something.  Any missed conversion should be trivially fixable, though.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge branch 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux into drm-next 2018-12-18T13:24:52+00:00 Daniel Vetter daniel.vetter@ffwll.ch 2018-12-18T13:24:52+00:00 221b35fedee1b38b9cee99320f0c60263d229e14 Lucas writes: "nothing major this time, mostly some cleanups that were found on the way of reworking the code in preparation for new feature additions." Small conflict in drivers/gpu/drm/etnaviv/etnaviv_drv.c because drm-misc-next also has a patch to switch over to _put() functions. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> From: Lucas Stach <l.stach@pengutronix.de> Link: https://patchwork.freedesktop.org/patch/msgid/1545130845.5874.23.camel@pengutronix.de 
Lucas writes:

"nothing major this time, mostly some cleanups that were found on the
way of reworking the code in preparation for new feature additions."

Small conflict in drivers/gpu/drm/etnaviv/etnaviv_drv.c because
drm-misc-next also has a patch to switch over to _put() functions.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1545130845.5874.23.camel@pengutronix.de
drm/etnaviv: remove lastctx member from gpu struct 2018-12-18T10:55:16+00:00 Lucas Stach l.stach@pengutronix.de 2018-11-22T14:29:27+00:00 801c7a1e528623f073c4007cb04d9a817e33b3a4 It only written and we don't infer any useful information from it anymore. Remove it. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com> 
It only written and we don't infer any useful information from
it anymore. Remove it.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
drm/etnaviv: replace header include with forward declaration 2018-12-18T10:55:11+00:00 Lucas Stach l.stach@pengutronix.de 2018-10-15T10:49:07+00:00 f9d255f4549e9798dce30408f25645710b5eed58 The etnaviv_gpu header only needs to know about the pointer types, so replace by a forward declaration and only include the headers where needed. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com> 
The etnaviv_gpu header only needs to know about the pointer types, so
replace by a forward declaration and only include the headers where needed.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
drm/etnaviv: remove unnecessary local irq disable 2018-12-18T10:55:07+00:00 Lucas Stach l.stach@pengutronix.de 2018-09-12T10:55:42+00:00 5a23144cb507bda66b98666e46b8b677df14c2e7 The only event function that is called from IRQ context is event_free, which is already using atomic bitmap operations, so we can avoid taking the event spinlock in this function completely. As other the other functions still using the event spinlock are all called from normal process context, we can avoid disabling IRQs while holding the spinlock. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com> 
The only event function that is called from IRQ context is event_free,
which is already using atomic bitmap operations, so we can avoid taking
the event spinlock in this function completely. As other the other
functions still using the event spinlock are all called from normal
process context, we can avoid disabling IRQs while holding the spinlock.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux into drm-next 2018-12-13T00:06:34+00:00 Dave Airlie airlied@redhat.com 2018-12-12T23:49:04+00:00 e7df065a697783ecb5c6eaa5692d78dcfceb71dd [airlied: make etnaviv build again] amdgpu: - DC trace support - More DC documentation - XGMI hive reset support - Rework IH interaction with KFD - Misc fixes and cleanups - Powerplay updates for newer polaris variants - Add cursor plane update fast path - Enable gpu reset by default on CI parts - Fix config with KFD/HSA not enabled amdkfd: - Limit vram overcommit - dmabuf support - Support for doorbell BOs ttm: - Support for simultaneous submissions to multiple engines scheduler: - Add helpers for hw with preemption support Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181207233119.16861-1-alexander.deucher@amd.com 
[airlied: make etnaviv build again]

amdgpu:
- DC trace support
- More DC documentation
- XGMI hive reset support
- Rework IH interaction with KFD
- Misc fixes and cleanups
- Powerplay updates for newer polaris variants
- Add cursor plane update fast path
- Enable gpu reset by default on CI parts
- Fix config with KFD/HSA not enabled

amdkfd:
- Limit vram overcommit
- dmabuf support
- Support for doorbell BOs

ttm:
- Support for simultaneous submissions to multiple engines

scheduler:
- Add helpers for hw with preemption support

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181207233119.16861-1-alexander.deucher@amd.com
drm/scheduler: Add drm_sched_suspend/resume_timeout() 2018-12-05T22:56:16+00:00 Sharat Masetty smasetty@codeaurora.org 2018-11-29T10:05:20+00:00 1db8c142b6c557a951e8f9866b98953fe91cbdd6 This patch adds two new functions to help client drivers suspend and resume the scheduler job timeout. This can be useful in cases where the hardware has preemption support enabled. Using this, it is possible to have the timeout active only for the ring which is active on the ringbuffer. This patch also makes the job_list_lock IRQ safe. Suggested-by: Christian Koenig <Christian.Koenig@amd.com> Signed-off-by: Sharat Masetty <smasetty@codeaurora.org> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
This patch adds two new functions to help client drivers suspend and
resume the scheduler job timeout. This can be useful in cases where the
hardware has preemption support enabled. Using this, it is possible to have
the timeout active only for the ring which is active on the ringbuffer.
This patch also makes the job_list_lock IRQ safe.

Suggested-by: Christian Koenig <Christian.Koenig@amd.com>
Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Merge tag 'drm-misc-next-2018-11-28' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2018-11-29T00:28:49+00:00 Dave Airlie airlied@redhat.com 2018-11-29T00:21:23+00:00 61647c77cb15354a329cbb36fe7a2253b36b51b1 drm-misc-next for v4.21: Core Changes: - Merge drm_info.c into drm_debugfs.c - Complete the fake drm_crtc_commit's hw_done/flip_done sooner. - Remove deprecated drm_obj_ref/unref functions. All drivers use get/put now. - Decrease stack use of drm_gem_prime_mmap. - Improve documentation for dumb callbacks. Driver Changes: - Add edid support to virtio. - Wait on implicit fence in meson and sun4i. - Add support for BGRX8888 to sun4i. - Preparation patches for sun4i driver to start supporting linear and tiled YUV formats. - Add support for HDMI 1.4 4k modes to meson, and support for VIC alternate timings. - Drop custom dumb_map in vkms. - Small fixes and cleanups to v3d. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/151a3270-b1be-ed75-bd58-6b29d741f592@linux.intel.com 
drm-misc-next for v4.21:

Core Changes:
- Merge drm_info.c into drm_debugfs.c
- Complete the fake drm_crtc_commit's hw_done/flip_done sooner.
- Remove deprecated drm_obj_ref/unref functions. All drivers use get/put now.
- Decrease stack use of drm_gem_prime_mmap.
- Improve documentation for dumb callbacks.

Driver Changes:
- Add edid support to virtio.
- Wait on implicit fence in meson and sun4i.
- Add support for BGRX8888 to sun4i.
- Preparation patches for sun4i driver to start supporting linear and tiled YUV formats.
- Add support for HDMI 1.4 4k modes to meson, and support for VIC alternate timings.
- Drop custom dumb_map in vkms.
- Small fixes and cleanups to v3d.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/151a3270-b1be-ed75-bd58-6b29d741f592@linux.intel.com
drm: replace "drm_dev_unref" function with "drm_dev_put" 2018-11-24T21:12:54+00:00 Fernando Ramos greenfoo@gluegarage.com 2018-11-15T22:16:23+00:00 808bad32ea423321bff17178aebfbc507165ab3b This patch unifies the naming of DRM functions for reference counting as requested on Documentation/gpu/todo.rst Signed-off-by: Fernando Ramos <greenfoo@gluegarage.com> Acked-by: Boris Brezillon <boris.brezillon@bootlin.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Acked-by: Stefan Agner <stefan@agner.ch> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20181115221634.22715-4-greenfoo@gluegarage.com 
This patch unifies the naming of DRM functions for reference counting as
requested on Documentation/gpu/todo.rst

Signed-off-by: Fernando Ramos <greenfoo@gluegarage.com>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Acked-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20181115221634.22715-4-greenfoo@gluegarage.com
Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux into drm-next 2018-11-19T01:07:52+00:00 Dave Airlie airlied@redhat.com 2018-11-19T01:07:52+00:00 9235dd441af43599b9cdcce599a3da4083fcad3c New features for 4.21: amdgpu: - Support for SDMA paging queue on vega - Put compute EOP buffers into vram for better performance - Share more code with amdkfd - Support for scanout with DCC on gfx9 - Initial kerneldoc for DC - Updated SMU firmware support for gfx8 chips - Rework CSA handling for eventual support for preemption - XGMI PSP support - Clean up RLC handling - Enable GPU reset by default on VI, SOC15 dGPUs - Ring and IB test cleanups amdkfd: - Share more code with amdgpu ttm: - Move global init out of the drivers scheduler: - Track if schedulers are ready for work - Timeout/fault handling changes to facilitate GPU recovery Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181114165113.3751-1-alexander.deucher@amd.com 
New features for 4.21:
amdgpu:
- Support for SDMA paging queue on vega
- Put compute EOP buffers into vram for better performance
- Share more code with amdkfd
- Support for scanout with DCC on gfx9
- Initial kerneldoc for DC
- Updated SMU firmware support for gfx8 chips
- Rework CSA handling for eventual support for preemption
- XGMI PSP support
- Clean up RLC handling
- Enable GPU reset by default on VI, SOC15 dGPUs
- Ring and IB test cleanups

amdkfd:
- Share more code with amdgpu

ttm:
- Move global init out of the drivers

scheduler:
- Track if schedulers are ready for work
- Timeout/fault handling changes to facilitate GPU recovery

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181114165113.3751-1-alexander.deucher@amd.com