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5 years agoMerge tag 'topic/mei-hdcp-2019-02-19' of git://anongit.freedesktop.org/drm/drm-intel...
Joonas Lahtinen [Wed, 20 Feb 2019 09:27:15 +0000 (11:27 +0200)]
Merge tag 'topic/mei-hdcp-2019-02-19' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next-queued

Prep patches + headers for the mei-hdcp/i915 component interfaces

Also contains the prep work in the component helpers plus adjustements
for the snd-hda/i915 component interface.

Plus one small static inline in the drm_hdcp.h header that both i915
and mei_hdcp will need.

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190219071619.GA11016@phenom.ffwll.local
5 years agoMerge drm/drm-next into drm-intel-next-queued
Joonas Lahtinen [Wed, 20 Feb 2019 09:04:08 +0000 (11:04 +0200)]
Merge drm/drm-next into drm-intel-next-queued

Doing a backmerge to be able to merge topic/mei-hdcp-2019-02-19 PR.

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
5 years agoMerge https://gitlab.freedesktop.org/drm/msm into drm-next
Dave Airlie [Wed, 20 Feb 2019 02:16:30 +0000 (12:16 +1000)]
Merge https://gitlab.freedesktop.org/drm/msm into drm-next

On the display side, cleanups and fixes to enabled modifiers
(QCOM_COMPRESSED).  And otherwise mostly misc fixes all around.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGuZ5uBKpf=fHvKpTiD10nychuEY8rnE+HeRz0QMvtY5_A@mail.gmail.com
5 years agoMerge branch 'linux-5.1' of git://github.com/skeggsb/linux into drm-next
Dave Airlie [Wed, 20 Feb 2019 00:08:35 +0000 (10:08 +1000)]
Merge branch 'linux-5.1' of git://github.com/skeggsb/linux into drm-next

Various fixes/cleanups, along with initial support for SVM features
utilising HMM address-space mirroring and device memory migration.
There's a lot more work to do in these areas, both in terms of
features and efficiency, but these can slowly trickle in later down
the track.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv5bsB4rRY1Gqa_Bp_KAd-v_q1rGZ4nYmOAQhceL0Nr-Xg@mail.gmail.com
5 years agodrm/nouveau/dmem: use dma addresses during migration copies
Ben Skeggs [Fri, 15 Feb 2019 05:50:16 +0000 (15:50 +1000)]
drm/nouveau/dmem: use dma addresses during migration copies

Removes the need for temporary VMM mappings.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/dmem: use physical vram addresses during migration copies
Ben Skeggs [Fri, 15 Feb 2019 04:45:57 +0000 (14:45 +1000)]
drm/nouveau/dmem: use physical vram addresses during migration copies

Removes the need for temporary VMM mappings.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/dmem: extend copy function to allow direct use of physical addresses
Ben Skeggs [Fri, 15 Feb 2019 00:35:05 +0000 (10:35 +1000)]
drm/nouveau/dmem: extend copy function to allow direct use of physical addresses

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/svm: new ioctl to migrate process memory to GPU memory
Jérôme Glisse [Tue, 7 Aug 2018 20:13:16 +0000 (16:13 -0400)]
drm/nouveau/svm: new ioctl to migrate process memory to GPU memory

This add an ioctl to migrate a range of process address space to the
device memory. On platform without cache coherent bus (x86, ARM, ...)
this means that CPU can not access that range directly, instead CPU
will fault which will migrate the memory back to system memory.

This is behind a staging flag so that we can evolve the API.

Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
5 years agodrm/nouveau/dmem: device memory helpers for SVM
Jérôme Glisse [Thu, 26 Jul 2018 21:59:13 +0000 (17:59 -0400)]
drm/nouveau/dmem: device memory helpers for SVM

Device memory can be use in SVM, in which case we do not have any of
the existing buffer object. This commit add infrastructure to allow
use of device memory without nouveau_bo. Again this is a temporary
solution until a rework of GPU memory management.

Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
5 years agodrm/nouveau/svm: initial support for shared virtual memory
Ben Skeggs [Thu, 5 Jul 2018 02:57:12 +0000 (12:57 +1000)]
drm/nouveau/svm: initial support for shared virtual memory

This uses HMM to mirror a process' CPU page tables into a channel's page
tables, and keep them synchronised so that both the CPU and GPU are able
to access the same memory at the same virtual address.

While this code also supports Volta/Turing, it's only enabled for Pascal
GPUs currently due to channel recovery being unreliable right now on the
later GPUs.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau: prepare for enabling svm with existing userspace interfaces
Ben Skeggs [Tue, 19 Feb 2019 07:21:48 +0000 (17:21 +1000)]
drm/nouveau: prepare for enabling svm with existing userspace interfaces

For a channel to make use of SVM features, it requires a different GPU MMU
configuration than we would normally use, which is not desirable to switch
to unless a client is actively going to use SVM.

In order to supporting SVM without more extensive changes to the userspace
interfaces, the SVM_INIT ioctl needs to replace the previous configuration
safely.

The only way we can currently do this safely, accounting for some unlikely
failure conditions, is to allocate the new VMM without destroying the last
one, and prioritising the SVM-enabled configuration in the code that cares.

This will get cleaned up again further down the track.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/fault/gv100-: expose VoltaFaultBufferA
Ben Skeggs [Tue, 8 May 2018 10:39:48 +0000 (20:39 +1000)]
drm/nouveau/fault/gv100-: expose VoltaFaultBufferA

This nvclass exposes the replayable fault buffer, which will be used
by SVM to manage GPU page faults.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/fault/gp100: expose MaxwellFaultBufferA
Ben Skeggs [Tue, 8 May 2018 10:39:48 +0000 (20:39 +1000)]
drm/nouveau/fault/gp100: expose MaxwellFaultBufferA

This nvclass exposes the replayable fault buffer, which will be used
by SVM to manage GPU page faults.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mmu/gp100-: support vmms with gcc/tex replayable faults enabled
Ben Skeggs [Tue, 8 May 2018 10:39:48 +0000 (20:39 +1000)]
drm/nouveau/mmu/gp100-: support vmms with gcc/tex replayable faults enabled

Some GPU units are capable of supporting "replayable" page faults, where
the execution unit will wait for SW to fixup GPU page tables rather than
triggering a channel-fatal fault.

This feature isn't useful (it's harmful, even) unless something like HMM
is being used to manage events appearing in the replayable fault buffer,
so, it's disabled by default.

This commit allows a client to request it be enabled.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mmu/gp100-: add privileged methods for fault replay/cancel
Ben Skeggs [Mon, 9 Jul 2018 06:07:40 +0000 (16:07 +1000)]
drm/nouveau/mmu/gp100-: add privileged methods for fault replay/cancel

Host methods exist to do at least some of what we need, but we are not
currently pushing replay/cancels through a channel like UVM does as it's
not clear whether it's necessary in our case (UVM also updates PTEs with
the GPU).

UVM also pushes a software method for fault cancels on Pascal, seemingly
because the host methods don't appear to be sufficient.  If/when we want
to push the replay/cancel on the GPU, we can re-purpose the cancellation
code here to implement that swmthd.

Keep it simple for now, until we figure out exactly what we need here.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mmu: add a privileged method to directly manage PTEs
Ben Skeggs [Sat, 7 Jul 2018 02:35:48 +0000 (12:35 +1000)]
drm/nouveau/mmu: add a privileged method to directly manage PTEs

This provides a somewhat more direct method of manipulating the GPU page
tables, which will be required to support SVM.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mmu: store mapped flag separately from memory pointer
Ben Skeggs [Sat, 7 Jul 2018 08:29:20 +0000 (18:29 +1000)]
drm/nouveau/mmu: store mapped flag separately from memory pointer

This will be used to support a privileged client providing PTEs directly,
without a memory object to use as a reference.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mmu: support initialisation of client-managed address-spaces
Ben Skeggs [Wed, 13 Jun 2018 06:25:53 +0000 (16:25 +1000)]
drm/nouveau/mmu: support initialisation of client-managed address-spaces

NVKM is currently responsible for managing the allocation of a client's
GPU address-space, but there's various use-cases (ie. HMM address-space
mirroring) where giving a client more direct control is desirable.

This commit allows for a VMM to be created where the area allocated for
NVKM is limited to a client-specified window, the remainder of address-
space is controlled directly by the client.

Leaving a window is necessary to support various internal requirements,
but also to support existing allocation interfaces as not all of the HW
is capable of working with a HMM allocation.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: expose method to determine current context
Ben Skeggs [Tue, 5 Feb 2019 04:54:53 +0000 (14:54 +1000)]
drm/nouveau/gr/gf100-: expose method to determine current context

MMU will need access to this info.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: expose fecs methods for pausing ctxsw
Ben Skeggs [Fri, 1 Feb 2019 03:52:50 +0000 (13:52 +1000)]
drm/nouveau/gr/gf100-: expose fecs methods for pausing ctxsw

MMU will need access to these.

v2. Apply fix from Rhys Kidd to send correct FECS method for STOP_CTXSW.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/falcon: fix a few indentation issues
Colin Ian King [Tue, 12 Feb 2019 13:51:18 +0000 (13:51 +0000)]
drm/nouveau/falcon: fix a few indentation issues

There are a few statements that are indented incorrectly. Fix these.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mmu/gf100-: virtualise setting pdb base address for invalidation
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/mmu/gf100-: virtualise setting pdb base address for invalidation

It appears that Pascal and newer need something different.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mmu/gf100-: make mmu invalidate function more general
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/mmu/gf100-: make mmu invalidate function more general

Will want to reuse this for fault replay/cancellation swmthds.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: store fecs/gpccs falcon pointers in substructures
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gr/gf100-: store fecs/gpccs falcon pointers in substructures

Future changes will want to add some additional things here, keep them
grouped together.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: move fecs bind_pointer into a function
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gr/gf100-: move fecs bind_pointer into a function

Makes the code somewhat less magic.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: remove some unnecessary reg writes
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gr/gf100-: remove some unnecessary reg writes

This is already done during golden context creation.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: move fecs elpg setup into functions
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gr/gf100-: move fecs elpg setup into functions

Makes the code somewhat less magic.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: move fecs discover_pm_image_size into a function
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gr/gf100-: move fecs discover_pm_image_size into a function

Makes the code somewhat less magic.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: move fecs discover_zcull_image_size into a function
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gr/gf100-: move fecs discover_zcull_image_size into a function

Makes the code somewhat less magic.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: move fecs discover_image_size into a function
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gr/gf100-: move fecs discover_image_size into a function

Makes the code somewhat less magic.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gr/gf100-: move fecs set_watchdog_timeout method into a function
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gr/gf100-: move fecs set_watchdog_timeout method into a function

Makes the code somewhat less magic.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau: allow accelerated buffer moves even when gr isn't present
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau: allow accelerated buffer moves even when gr isn't present

There's no need to avoid using copy engines if gr init fails for some
reason (usually missing FW, or incomplete bring-up).

It's not terribly useful for an end-user, but it'll slightly speed up
suspend/resume when saving fb contents, and allow for host/ce code to
be validated.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/kms/nv04-nv4x: move resume code to dispnv04 init hook
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/kms/nv04-nv4x: move resume code to dispnv04 init hook

It has no relevance to the atomic path used by newer GPUs.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/kms/nv04-nv4x: move suspend code to dispnv04 fini hook
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/kms/nv04-nv4x: move suspend code to dispnv04 fini hook

It has no relevance to the atomic path used by newer GPUs.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/kms/nv04-nv4x: move a bunch of pre-nv50 page flip code to dispnv04
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/kms/nv04-nv4x: move a bunch of pre-nv50 page flip code to dispnv04

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/kms: display destroy/init/fini hooks can be static
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/kms: display destroy/init/fini hooks can be static

Swapped order of functions in dispnv04 to allow this, but no code changes.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau: allocate kernel channel(s) before initialising display
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau: allocate kernel channel(s) before initialising display

Some of the pre-NV50 depends on SW methods to implement synchronisation
for page flips, and we want to move this setup out of common code, thus
we require the channel to have been allocation before display init.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/disp/gf119-: decode exception reason to human-readable string
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/disp/gf119-: decode exception reason to human-readable string

We also change the error strings to match NVIDIA's naming.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/bios/init: handle INIT_GENERIC_CONDITION_ID_NO_PANEL_SEQ_DELAYS
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/bios/init: handle INIT_GENERIC_CONDITION_ID_NO_PANEL_SEQ_DELAYS

As I currently understand it, this is related to features we have no
support for as of yet.

In theory, this change should be a noop, just without the warning.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/bios/init: label existing INIT_GENERIC_CONDITION types
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/bios/init: label existing INIT_GENERIC_CONDITION types

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/secboot: fix missing newline in error messages
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/secboot: fix missing newline in error messages

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/sec2/tu102-: instantiate SEC2 falcon
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/sec2/tu102-: instantiate SEC2 falcon

Required for ACR.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/sec2: utilise engine PRI address from TOP
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/sec2: utilise engine PRI address from TOP

Turing has its SEC2 instance in an alternate location, and this avoids
needing to duplicate the code here for it.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/nvdec/tu102-: instantiate NVDEC0 falcon
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/nvdec/tu102-: instantiate NVDEC0 falcon

Required to run VPR scrubber binary as part of secboot.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/nvdec/gp102-: utilise engine PRI address from TOP
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/nvdec/gp102-: utilise engine PRI address from TOP

Turing has its NVDEC instances in an alternate location.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/gsp/gv100-: instantiate GSP falcon
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/gsp/gv100-: instantiate GSP falcon

We need this for Turing ACR, but it's present from Volta onwards.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/top/gv100-: translate entry for the GSP
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/top/gv100-: translate entry for the GSP

So we're able to connect fault/interrupt handling to the GSP subdev.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/top: add function to lookup PRI address for devices
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/top: add function to lookup PRI address for devices

Will be using this in upcoming changes to avoid the need for entirely
new subdevs to deal with Turing register moves.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/core: define GSP subdev
Ben Skeggs [Tue, 12 Feb 2019 12:28:13 +0000 (22:28 +1000)]
drm/nouveau/core: define GSP subdev

Exact meaning of the acronym is unknown, but we need this for Turing ACR.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau: fix missing break in switch statement
Colin Ian King [Mon, 8 Oct 2018 20:47:36 +0000 (21:47 +0100)]
drm/nouveau: fix missing break in switch statement

The NOUVEAU_GETPARAM_PCI_DEVICE case is missing a break statement and falls
through to the following NOUVEAU_GETPARAM_BUS_TYPE case and may end up
re-assigning the getparam->value to an undesired value. Fix this by adding
in the missing break.

Detected by CoverityScan, CID#1460507 ("Missing break in switch")

Fixes: 359088d5b8ec ("drm/nouveau: remove trivial cases of nvxx_device() usage")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 29 Jan 2019 20:30:46 +0000 (14:30 -0600)]
drm/nouveau: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warning:

drivers/gpu/drm/nouveau/nouveau_bo.c:1434:53: warning: this statement may fall through [-Wimplicit-fallthrough=]

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau: Don't WARN_ON VCPI allocation failures
Lyude Paul [Mon, 28 Jan 2019 21:03:50 +0000 (16:03 -0500)]
drm/nouveau: Don't WARN_ON VCPI allocation failures

This is much louder then we want. VCPI allocation failures are quite
normal, since they will happen if any part of the modesetting process is
interrupted by removing the DP MST topology in question. So just print a
debugging message on VCPI failures instead.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Fixes: f479c0ba4a17 ("drm/nouveau/kms/nv50: initial support for DP 1.2 multi-stream")
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.10+
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/pmu: don't print reply values if exec is false
Colin Ian King [Wed, 19 Dec 2018 15:29:49 +0000 (15:29 +0000)]
drm/nouveau/pmu: don't print reply values if exec is false

Currently the uninitialized values in the array reply are printed out
when exec is false and nvkm_pmu_send has not updated the array. Avoid
confusion by only dumping out these values if they have been actually
updated.

Detected by CoverityScan, CID#1271291 ("Uninitialized scaler variable")
Fixes: ebb58dc2ef8c ("drm/nouveau/pmu: rename from pwr (no binary change)")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/bios/ramcfg: fix missing parentheses when calculating RON
Colin Ian King [Sun, 25 Nov 2018 17:09:18 +0000 (17:09 +0000)]
drm/nouveau/bios/ramcfg: fix missing parentheses when calculating RON

Currently, the expression for calculating RON is always going to result
in zero no matter the value of ram->mr[1] because the ! operator has
higher precedence than the shift >> operator.  I believe the missing
parentheses around the expression before appying the ! operator will
result in the desired result.

[ Note, not tested ]

Detected by CoveritScan, CID#1324005 ("Operands don't affect result")

Fixes: c25bf7b6155c ("drm/nouveau/bios/ramcfg: Separate out RON pull value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/bios/dp: make array vsoff static, shrinks object size
Colin Ian King [Tue, 4 Sep 2018 15:23:33 +0000 (16:23 +0100)]
drm/nouveau/bios/dp: make array vsoff static, shrinks object size

Don't populate the array vsoff on the stack but instead make it
static. Makes the object code smaller by 67 bytes:

Before:
   text    data     bss     dec     hex filename
   5753     112       0    5865    16e9 .../nouveau/nvkm/subdev/bios/dp.o

After:
   text    data     bss     dec     hex filename
   5622     176       0    5798    16a6 .../nouveau/nvkm/subdev/bios/dp.o

(gcc version 8.2.0 x86_64)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/ce/tu102: rename implementation from tu104
Ben Skeggs [Thu, 17 Jan 2019 02:13:00 +0000 (12:13 +1000)]
drm/nouveau/ce/tu102: rename implementation from tu104

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/fifo/tu102: rename implementation from tu104
Ben Skeggs [Thu, 17 Jan 2019 02:11:47 +0000 (12:11 +1000)]
drm/nouveau/fifo/tu102: rename implementation from tu104

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/disp/tu102: rename implementation from tu104
Ben Skeggs [Thu, 17 Jan 2019 02:10:06 +0000 (12:10 +1000)]
drm/nouveau/disp/tu102: rename implementation from tu104

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/fault/tu102: rename implementation from tu104
Ben Skeggs [Thu, 17 Jan 2019 02:07:23 +0000 (12:07 +1000)]
drm/nouveau/fault/tu102: rename implementation from tu104

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/bar/tu102: rename implementation from tu104
Ben Skeggs [Thu, 17 Jan 2019 02:06:01 +0000 (12:06 +1000)]
drm/nouveau/bar/tu102: rename implementation from tu104

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mmu/tu102: rename implementation from tu104
Ben Skeggs [Thu, 17 Jan 2019 02:04:02 +0000 (12:04 +1000)]
drm/nouveau/mmu/tu102: rename implementation from tu104

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/mc/tu102: rename implementation from tu104
Ben Skeggs [Thu, 17 Jan 2019 01:46:39 +0000 (11:46 +1000)]
drm/nouveau/mc/tu102: rename implementation from tu104

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/devinit/tu102: rename implementation from tu104
Ben Skeggs [Thu, 17 Jan 2019 01:41:53 +0000 (11:41 +1000)]
drm/nouveau/devinit/tu102: rename implementation from tu104

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/nouveau/volt/gf117: fix speedo readout register
Ilia Mirkin [Sun, 13 Jan 2019 22:50:10 +0000 (17:50 -0500)]
drm/nouveau/volt/gf117: fix speedo readout register

GF117 appears to use the same register as GK104 (but still with the
general Fermi readout mechanism).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108980
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
5 years agodrm/msm: Truncate the buffer object name if the copy from user failed
Jordan Crouse [Tue, 19 Feb 2019 18:40:19 +0000 (11:40 -0700)]
drm/msm: Truncate the buffer object name if the copy from user failed

(Resend since there was a compile error that I forgot to commit before sending)

If there is a error while doing a copy_from_user() for MSM_INFO_SET_NAME
make sure to truncate the object name so that there isn't a chance that
we'll have random data in the string.

This is on top of [1] reported and fixed by Dan Carpenter.

[1] https://patchwork.freedesktop.org/series/56656/

Fixes: f05c83e77460 ("drm/msm: add uapi to get/set debug name")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
5 years agodrm/msm: fix an error code in the ioctl
Dan Carpenter [Thu, 14 Feb 2019 07:19:27 +0000 (10:19 +0300)]
drm/msm: fix an error code in the ioctl

The copy_to/from_user() functions return the number of bytes remaining
to be copied but we should return -EFAULT to the user.

Fixes: f05c83e77460 ("drm/msm: add uapi to get/set debug name")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
5 years agodrm/i915: Use time based guilty context banning
Chris Wilson [Tue, 19 Feb 2019 12:21:52 +0000 (12:21 +0000)]
drm/i915: Use time based guilty context banning

Currently, we accumulate each time a context hangs the GPU, offset
against the number of requests it submits, and if that score exceeds a
certain threshold, we ban that context from submitting any more requests
(cancelling any work in flight). In contrast, we use a simple timer on
the file, that if we see more than a 9 hangs faster than 60s apart in
total across all of its contexts, we will ban the client from creating
any more contexts. This leads to a confusing situation where the file
may be banned before the context, so lets use a simple timer scheme for
each.

If the context submits 3 hanging requests within a 120s period, declare
it forbidden to ever send more requests.

This has the advantage of not being easy to repair by simply sending
empty requests, but has the disadvantage that if the context is idle
then it is forgiven. However, if the context is idle, it is not
disrupting the system, but a hog can evade the request counting and
cause much more severe disruption to the system.

Updating ban_score from request retirement is dubious as the retirement
is purposely not in sync with request submission (i.e. we try and batch
retirement to reduce overhead and avoid latency on submission), which
leads to surprising situations where we can forgive a hang immediately
due to a backlog of requests from before the hang being retired
afterwards.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190219122215.8941-2-chris@chris-wilson.co.uk
5 years agodrm/i915: Trim delays for wedging
Chris Wilson [Tue, 19 Feb 2019 12:21:57 +0000 (12:21 +0000)]
drm/i915: Trim delays for wedging

CI still reports the occasional multi-second delay for resets, in
particular along the wedge+recovery paths. As the likely, and unbounded,
delay here is from sync_rcu, use the expedited variant instead.

Testcase: igt/gem_eio/unwedge-stress
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190219122215.8941-7-chris@chris-wilson.co.uk
5 years agodrm/i915: Move verify_wm_state() to heap
Chris Wilson [Tue, 19 Feb 2019 12:21:51 +0000 (12:21 +0000)]
drm/i915: Move verify_wm_state() to heap

The stack usage exceeded 1024 bytes prompting warnings on conservative
setups, so move the temporary allocation for HW readback onto the heap.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190219122215.8941-1-chris@chris-wilson.co.uk
5 years agodrm/i915: Include reminders about leaving no holes in uAPI enums
Chris Wilson [Mon, 18 Feb 2019 09:46:28 +0000 (09:46 +0000)]
drm/i915: Include reminders about leaving no holes in uAPI enums

We don't want to pre-reserve any holes in our uAPI for that is a sign of
nefarious and hidden activity. Add a reminder about our uAPI
expectations to encourage good practice when adding new defines/enums.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190218094628.13522-1-chris@chris-wilson.co.uk
5 years agodrm/audio: declaration of struct device
Ramalingam C [Sat, 16 Feb 2019 05:04:59 +0000 (10:34 +0530)]
drm/audio: declaration of struct device

Header has used the references to struct device without it definition
or declaration. Hence resulting in compilation warning such as

  "'struct device' declared inside parameter list..."

This changes adds a declaration to struct device in the header to avoid
any such warnings.

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
cc: Takashi Iwai <tiwai@suse.de>
cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1550293499-5560-1-git-send-email-ramalingam.c@intel.com
5 years agodrm/i915: Restore interrupt enabling after a reset
Chris Wilson [Mon, 18 Feb 2019 15:31:06 +0000 (15:31 +0000)]
drm/i915: Restore interrupt enabling after a reset

At least on i965g and i965gm, performing a device reset clobbers the IER
resulting in loss of interrupts thereafter. So, run the irq_postinstall
hook to restore them.

v2: Ville pointed out that he already attempted to solve this problem by
reinstalling the interrupts in intel_reset_finish() (part of the display
handling around reset). However, reinstalling the irq clobbers the
i915->irq_mask which we need for handling MI_USER_INTERRUPTS, and does
so too late to handle any interrupts generated from resuming the rings.
The simple solution to both is to pull the interrupt reenabling from
afterwards to around the device reset.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190218153106.16768-1-chris@chris-wilson.co.uk
5 years agodrm/i915/selftests: Make unbannable contexts for reset handling
Chris Wilson [Mon, 18 Feb 2019 14:50:50 +0000 (14:50 +0000)]
drm/i915/selftests: Make unbannable contexts for reset handling

igt_ctx_sseu was caught using bannable contexts, and in the course of
resetting rapidly to run its test, was banned. Don't let ourselves ban
the test!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190218145051.18981-1-chris@chris-wilson.co.uk
5 years agodrm/i915: Optionally disable automatic recovery after a GPU reset
Chris Wilson [Mon, 18 Feb 2019 10:58:21 +0000 (10:58 +0000)]
drm/i915: Optionally disable automatic recovery after a GPU reset

Some clients, such as mesa, may only emit minimal incremental batches
that rely on the logical context state from previous batches. They know
that recovery is impossible after a hang as their required GPU state is
lost, and that each in flight and subsequent batch will hang (resetting
the context image back to default perpetuating the problem).

To avoid getting into the state in the first place, we can allow clients
to opt out of automatic recovery and elect to ban any guilty context
following a hang. This prevents the continual stream of hangs and allows
the client to recreate their context and rebuild the state from scratch.

v2: Prefer calling it recoverable rather than unrecoverable.

References: https://lists.freedesktop.org/archives/mesa-dev/2019-February/215431.html
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org> # for mesa
Link: https://patchwork.freedesktop.org/patch/msgid/20190218105821.17293-1-chris@chris-wilson.co.uk
5 years agoMerge v5.0-rc7 into drm-next
Dave Airlie [Mon, 18 Feb 2019 03:27:15 +0000 (13:27 +1000)]
Merge v5.0-rc7 into drm-next

Backmerging for nouveau and imx that needed some fixes for next pulls.

Signed-off-by: Dave Airlie <airlied@redhat.com>
5 years agoLinux 5.0-rc7 v5.0-rc7
Linus Torvalds [Mon, 18 Feb 2019 02:46:40 +0000 (18:46 -0800)]
Linux 5.0-rc7

5 years agodrm/i915/selftests: Move local mock_ggtt allocations to the heap
Chris Wilson [Sun, 17 Feb 2019 20:25:18 +0000 (20:25 +0000)]
drm/i915/selftests: Move local mock_ggtt allocations to the heap

This struct appears quite large and pushes our stack frame over
1024 bytes -- too high for conservative setups. So move the mock_ggtt
struct to the heap.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190217202518.24730-1-chris@chris-wilson.co.uk
5 years agoMerge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 17 Feb 2019 17:22:01 +0000 (09:22 -0800)]
Merge branch 'efi-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull EFI fixes from Ingo Molnar:
 "This tree reverts a GICv3 commit (which was broken) and fixes it in
  another way, by adding a memblock build-time entries quirk for ARM64"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/arm: Revert "Defer persistent reservations until after paging_init()"
  arm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve table

5 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 17 Feb 2019 16:44:38 +0000 (08:44 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Three changes:

   - An UV fix/quirk to pull UV BIOS calls into the efi_runtime_lock
     locking regime. (This done by aliasing __efi_uv_runtime_lock to
     efi_runtime_lock, which should make the quirk nature obvious and
     maintain the general policy that the EFI lock (name...) isn't
     exposed to drivers.)

   - Our version of MAGA: Make a.out Great Again.

   - Add a new Intel model name enumerator to an upstream header to help
     reduce dependencies going forward"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
  x86/CPU: Add Icelake model number
  x86/a.out: Clear the dump structure initially

5 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 17 Feb 2019 16:38:13 +0000 (08:38 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Two fixes on the kernel side: fix an over-eager condition that failed
  larger perf ring-buffer sizes, plus fix crashes in the Intel BTS code
  for a corner case, found by fuzzing"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Fix impossible ring-buffer sizes warning
  perf/x86: Add check_period PMU callback

5 years agoMerge tag 'powerpc-5.0-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 17 Feb 2019 16:36:21 +0000 (08:36 -0800)]
Merge tag 'powerpc-5.0-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:
 "Just one fix, for pgd/pud_present() which were broken on big endian
  since v4.20, leading to possible data corruption.

  Thanks to: Aneesh Kumar K.V., Erhard F., Jan Kara"

* tag 'powerpc-5.0-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: Fix possible corruption on big endian due to pgd/pud_present()

5 years agoMerge tag 'csky-for-linus-5.0-rc6' of git://github.com/c-sky/csky-linux
Linus Torvalds [Sun, 17 Feb 2019 16:34:10 +0000 (08:34 -0800)]
Merge tag 'csky-for-linus-5.0-rc6' of git://github.com/c-sky/csky-linux

Pull arch/csky fixes from Guo Ren:
 "Here are some fixup patches for 5.0-rc6"

* tag 'csky-for-linus-5.0-rc6' of git://github.com/c-sky/csky-linux:
  csky: Fixup dead loop in show_stack
  csky: Fixup io-range page attribute for mmap("/dev/mem")
  csky: coding convention: Use task_stack_page
  csky: Fixup wrong pt_regs size
  csky: Fixup _PAGE_GLOBAL bit for 610 tlb entry

5 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sun, 17 Feb 2019 16:32:25 +0000 (08:32 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Two more driver bugfixes"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: bcm2835: Clear current buffer pointers and counts after a transfer
  i2c: cadence: Fix the hold bit setting

5 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sun, 17 Feb 2019 16:30:35 +0000 (08:30 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:

 - tweaks to Elan drivers (both PS/2 and I2C) to support new devices.
   Also revert of one of IDs as that device should really be driven by
   i2c-hid + hid-multitouch

 - a few drivers have been switched to set_brightness_blocking() call
   because they either were sleeping the their set_brightness()
   implementation or used workqueue but were not canceling it on unbind.

 - ps2-gpio and matrix_keypad needed to [properly] flush their works to
   avoid potential use-after-free on unbind.

 - other miscellaneous fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elan_i2c - add ACPI ID for touchpad in Lenovo V330-15ISK
  Input: st-keyscan - fix potential zalloc NULL dereference
  Input: apanel - switch to using brightness_set_blocking()
  Revert "Input: elan_i2c - add ACPI ID for touchpad in ASUS Aspire F5-573G"
  Input: qt2160 - switch to using brightness_set_blocking()
  Input: matrix_keypad - use flush_delayed_work()
  Input: ps2-gpio - flush TX work when closing port
  Input: cap11xx - switch to using set_brightness_blocking()
  Input: elantech - enable 3rd button support on Fujitsu CELSIUS H780
  Input: bma150 - register input device after setting private data
  Input: pwm-vibra - stop regulator after disabling pwm, not before
  Input: pwm-vibra - prevent unbalanced regulator
  Input: snvs_pwrkey - allow selecting driver for i.MX 7D

5 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 17 Feb 2019 16:28:49 +0000 (08:28 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "A somewhat bigger ARM update, and the usual smattering of x86 bug
  fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: vmx: Fix entry number check for add_atomic_switch_msr()
  KVM: x86: Recompute PID.ON when clearing PID.SN
  KVM: nVMX: Restore a preemption timer consistency check
  x86/kvm/nVMX: read from MSR_IA32_VMX_PROCBASED_CTLS2 only when it is available
  KVM: arm64: Forbid kprobing of the VHE world-switch code
  KVM: arm64: Relax the restriction on using stage2 PUD huge mapping
  arm: KVM: Add missing kvm_stage2_has_pmd() helper
  KVM: arm/arm64: vgic: Always initialize the group of private IRQs
  arm/arm64: KVM: Don't panic on failure to properly reset system registers
  arm/arm64: KVM: Allow a VCPU to fully reset itself
  KVM: arm/arm64: Reset the VCPU without preemption and vcpu state loaded
  arm64: KVM: Don't generate UNDEF when LORegion feature is present
  KVM: arm/arm64: vgic: Make vgic_cpu->ap_list_lock a raw_spinlock
  KVM: arm/arm64: vgic: Make vgic_dist->lpi_list_lock a raw_spinlock
  KVM: arm/arm64: vgic: Make vgic_irq->irq_lock a raw_spinlock

5 years agoInput: elan_i2c - add ACPI ID for touchpad in Lenovo V330-15ISK
Mauro Ciancio [Mon, 14 Jan 2019 13:24:53 +0000 (10:24 -0300)]
Input: elan_i2c - add ACPI ID for touchpad in Lenovo V330-15ISK

This adds ELAN0617 to the ACPI table to support Elan touchpad found in
Lenovo V330-15ISK.

Signed-off-by: Mauro Ciancio <mauro@acadeu.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
5 years agoInput: st-keyscan - fix potential zalloc NULL dereference
Gabriel Fernandez [Sun, 17 Feb 2019 05:10:16 +0000 (21:10 -0800)]
Input: st-keyscan - fix potential zalloc NULL dereference

This patch fixes the following static checker warning:

drivers/input/keyboard/st-keyscan.c:156 keyscan_probe()
error: potential zalloc NULL dereference: 'keypad_data->input_dev'

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
5 years agoInput: apanel - switch to using brightness_set_blocking()
Dmitry Torokhov [Wed, 6 Feb 2019 18:32:46 +0000 (10:32 -0800)]
Input: apanel - switch to using brightness_set_blocking()

Now that LEDs core allows "blocking" flavor of "set brightness" method we
can use it and get rid of private work item. As a bonus, we are no longer
forgetting to cancel it when we unbind the driver.

Reviewed-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
5 years agopowerpc/64s: Fix possible corruption on big endian due to pgd/pud_present()
Michael Ellerman [Thu, 14 Feb 2019 04:00:36 +0000 (15:00 +1100)]
powerpc/64s: Fix possible corruption on big endian due to pgd/pud_present()

In v4.20 we changed our pgd/pud_present() to check for _PAGE_PRESENT
rather than just checking that the value is non-zero, e.g.:

  static inline int pgd_present(pgd_t pgd)
  {
 -       return !pgd_none(pgd);
 +       return (pgd_raw(pgd) & cpu_to_be64(_PAGE_PRESENT));
  }

Unfortunately this is broken on big endian, as the result of the
bitwise & is truncated to int, which is always zero because
_PAGE_PRESENT is 0x8000000000000000ul. This means pgd_present() and
pud_present() are always false at compile time, and the compiler
elides the subsequent code.

Remarkably with that bug present we are still able to boot and run
with few noticeable effects. However under some work loads we are able
to trigger a warning in the ext4 code:

  WARNING: CPU: 11 PID: 29593 at fs/ext4/inode.c:3927 .ext4_set_page_dirty+0x70/0xb0
  CPU: 11 PID: 29593 Comm: debugedit Not tainted 4.20.0-rc1 #1
  ...
  NIP .ext4_set_page_dirty+0x70/0xb0
  LR  .set_page_dirty+0xa0/0x150
  Call Trace:
   .set_page_dirty+0xa0/0x150
   .unmap_page_range+0xbf0/0xe10
   .unmap_vmas+0x84/0x130
   .unmap_region+0xe8/0x190
   .__do_munmap+0x2f0/0x510
   .__vm_munmap+0x80/0x110
   .__se_sys_munmap+0x14/0x30
   system_call+0x5c/0x70

The fix is simple, we need to convert the result of the bitwise & to
an int before returning it.

Thanks to Erhard, Jan Kara and Aneesh for help with debugging.

Fixes: da7ad366b497 ("powerpc/mm/book3s: Update pmd_present to look at _PAGE_PRESENT bit")
Cc: stable@vger.kernel.org # v4.20+
Reported-by: Erhard F. <erhard_f@mailbox.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
5 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Linus Torvalds [Sun, 17 Feb 2019 01:44:12 +0000 (17:44 -0800)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This week is a much smaller update, containing fixes only for TI OMAP,
  NXP i.MX and Rockchips platforms:

  omap:
   - omap4 had problems with lost timer interrupts
   - another IRQ handling issue with OMAP5
   - A workaround for a regression in the pwm-omap-dmtimer driver

  NXP i.MX:
   - eMMC was broken on the new imx8mq-evk board

  Rockchip:
   - a fix for new dtc graph warnings and a regulator fix for rock64
   - USB support broke on rk3328-rock64"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: OMAP2+: fix lack of timer interrupts on CPU1 after hotplug
  arm64: dts: imx8mq: Fix boot from eMMC
  ARM: OMAP2+: Variable "reg" in function omap4_dsi_mux_pads() could be uninitialized
  ARM: dts: Configure clock parent for pwm vibra
  bus: ti-sysc: Fix timer handling with drop pm_runtime_irq_safe()
  arm64: dts: rockchip: enable usb-host regulators at boot on rk3328-rock64
  arm64: dts: rockchip: fix graph_port warning on rk3399 bob kevin and excavator
  ARM: OMAP5+: Fix inverted nirq pin interrupts with irq_set_type
  clocksource: timer-ti-dm: Fix pwm dmtimer usage of fck reparenting
  ARM: dts: rockchip: remove qos_cif1 from rk3188 power-domain

5 years agoMerge tag 'nfsd-5.0-2' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Sun, 17 Feb 2019 01:38:01 +0000 (17:38 -0800)]
Merge tag 'nfsd-5.0-2' of git://linux-nfs.org/~bfields/linux

Pull more nfsd fixes from Bruce Fields:
 "Two small fixes, one for crashes using nfs/krb5 with older enctypes,
  one that could prevent clients from reclaiming state after a kernel
  upgrade"

* tag 'nfsd-5.0-2' of git://linux-nfs.org/~bfields/linux:
  sunrpc: fix 4 more call sites that were using stack memory with a scatterlist
  Revert "nfsd4: return default lease period"

5 years agoMerge tag 'nfs-for-5.0-4' of git://git.linux-nfs.org/projects/anna/linux-nfs
Linus Torvalds [Sun, 17 Feb 2019 01:33:39 +0000 (17:33 -0800)]
Merge tag 'nfs-for-5.0-4' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull more NFS client fixes from Anna Schumaker:
 "Three fixes this time.

  Nicolas's is for xprtrdma completion vector allocation on single-core
  systems. Greg's adds an error check when allocating a debugfs dentry.
  And Ben's is an additional fix for nfs_page_async_flush() to prevent
  pages from accidentally getting truncated.

  Summary:

   - Make sure Send CQ is allocated on an existing compvec

   - Properly check debugfs dentry before using it

   - Don't use page_file_mapping() after removing a page"

* tag 'nfs-for-5.0-4' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  NFS: Don't use page_file_mapping after removing the page
  rpc: properly check debugfs dentry before using it
  xprtrdma: Make sure Send CQ is allocated on an existing compvec

5 years agoMerge tag 'auxdisplay-for-linus-v5.0-rc7' of git://github.com/ojeda/linux
Linus Torvalds [Sun, 17 Feb 2019 01:31:36 +0000 (17:31 -0800)]
Merge tag 'auxdisplay-for-linus-v5.0-rc7' of git://github.com/ojeda/linux

Pull auxdisplay fix from Miguel Ojeda:
 "Fix potential user-after-free on ht16k33 module unload. Reported by
  Sven Van Asbroeck"

* tag 'auxdisplay-for-linus-v5.0-rc7' of git://github.com/ojeda/linux:
  auxdisplay: ht16k33: fix potential user-after-free on module unload

5 years agoMerge tag 'compiler-attributes-for-linus-v5.0-rc7' of git://github.com/ojeda/linux
Linus Torvalds [Sat, 16 Feb 2019 18:28:05 +0000 (10:28 -0800)]
Merge tag 'compiler-attributes-for-linus-v5.0-rc7' of git://github.com/ojeda/linux

Pull compiler attributes fixes from Miguel Ojeda:
 "Clean the new GCC 9 -Wmissing-attributes warnings

  The upcoming GCC 9 release extends the -Wmissing-attributes warnings
  (enabled by -Wall) to C and aliases: it warns when particular function
  attributes are missing in the aliases but not in their target, e.g.:

    void __cold f(void) {}
    void __alias("f") g(void);

  diagnoses:

    warning: 'g' specifies less restrictive attribute than
    its target 'f': 'cold' [-Wmissing-attributes]

  These patch series clean these new warnings. Most of them are caused
  by the module_init/exit macros"

Link: https://lore.kernel.org/lkml/20190125104353.2791-1-labbott@redhat.com/
* tag 'compiler-attributes-for-linus-v5.0-rc7' of git://github.com/ojeda/linux:
  include/linux/module.h: copy __init/__exit attrs to init/cleanup_module
  Compiler Attributes: add support for __copy (gcc >= 9)
  lib/crc32.c: mark crc32_le_base/__crc32c_le_base aliases as __pure

5 years agoefi/arm: Revert "Defer persistent reservations until after paging_init()"
Ard Biesheuvel [Fri, 15 Feb 2019 12:33:33 +0000 (13:33 +0100)]
efi/arm: Revert "Defer persistent reservations until after paging_init()"

This reverts commit eff896288872d687d9662000ec9ae11b6d61766f, which
deferred the processing of persistent memory reservations to a point
where the memory may have already been allocated and overwritten,
defeating the purpose.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190215123333.21209-3-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
5 years agoarm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve table
Ard Biesheuvel [Fri, 15 Feb 2019 12:33:32 +0000 (13:33 +0100)]
arm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve table

In the irqchip and EFI code, we have what basically amounts to a quirk
to work around a peculiarity in the GICv3 architecture, which permits
the system memory address of LPI tables to be programmable only once
after a CPU reset. This means kexec kernels must use the same memory
as the first kernel, and thus ensure that this memory has not been
given out for other purposes by the time the ITS init code runs, which
is not very early for secondary CPUs.

On systems with many CPUs, these reservations could overflow the
memblock reservation table, and this was addressed in commit:

  eff896288872 ("efi/arm: Defer persistent reservations until after paging_init()")

However, this turns out to have made things worse, since the allocation
of page tables and heap space for the resized memblock reservation table
itself may overwrite the regions we are attempting to reserve, which may
cause all kinds of corruption, also considering that the ITS will still
be poking bits into that memory in response to incoming MSIs.

So instead, let's grow the static memblock reservation table on such
systems so it can accommodate these reservations at an earlier time.
This will permit us to revert the above commit in a subsequent patch.

[ mingo: Minor cleanups. ]

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190215123333.21209-2-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
5 years agodrm/i915/selftests: Always free spinner on __sseu_prepare error
Chris Wilson [Fri, 15 Feb 2019 19:50:10 +0000 (19:50 +0000)]
drm/i915/selftests: Always free spinner on __sseu_prepare error

Prepare a nice little onion unwind to ensure that we always free the
spinner if we __sseu_prepare fails.

Fixes: c06ee6ff2cbc ("drm/i915/selftests: Context SSEU reconfiguration tests")
Reported-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190215195010.16637-1-chris@chris-wilson.co.uk
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
5 years agodrm/i915/fbdev: Actually configure untiled displays
Chris Wilson [Fri, 15 Feb 2019 12:30:19 +0000 (12:30 +0000)]
drm/i915/fbdev: Actually configure untiled displays

If we skipped all the connectors that were not part of a tile, we would
leave conn_seq=0 and conn_configured=0, convincing ourselves that we
had stagnated in our configuration attempts. Avoid this situation by
starting conn_seq=ALL_CONNECTORS, and repeating until we find no more
connectors to configure.

Fixes: 754a76591b12 ("drm/i915/fbdev: Stop repeating tile configuration on stagnation")
Reported-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190215123019.32283-1-chris@chris-wilson.co.uk
Cc: <stable@vger.kernel.org> # v3.19+
5 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 15 Feb 2019 21:36:43 +0000 (13:36 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two fairly small fixes: the qla one is a panic inducing use after free
  and the entropy fix may seem minor but it has had huge userspace
  impact thanks to an unrelated change in openssl that causes sshd to
  refuse logins until it has enough entropy for the session keys, which
  causes tens of minutes delay before the affected systems allow logins
  after reboot"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: qla2xxx: Fix panic from use after free in qla2x00_async_tm_cmd
  scsi: sd: fix entropy gathering for most rotational disks

5 years agosunrpc: fix 4 more call sites that were using stack memory with a scatterlist
Scott Mayhew [Fri, 15 Feb 2019 18:42:02 +0000 (13:42 -0500)]
sunrpc: fix 4 more call sites that were using stack memory with a scatterlist

While trying to reproduce a reported kernel panic on arm64, I discovered
that AUTH_GSS basically doesn't work at all with older enctypes on arm64
systems with CONFIG_VMAP_STACK enabled.  It turns out there still a few
places using stack memory with scatterlists, causing krb5_encrypt() and
krb5_decrypt() to produce incorrect results (or a BUG if CONFIG_DEBUG_SG
is enabled).

Tested with cthon on v4.0/v4.1/v4.2 with krb5/krb5i/krb5p using
des3-cbc-sha1 and arcfour-hmac-md5.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>