A bit larger this time around, due to introduction of "dpu1" support
for the display controller in sdm845 and beyond. This has been on
list and undergoing refactoring since Feb (going from ~110kloc to
~30kloc), and all my review complaints have been addressed, so I'd be
happy to see this upstream so further feature work can procede on top
of upstream.
Also includes the gpu coredump support, which should be useful for
debugging gpu crashes. And various other misc fixes and such.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGv-8y3zguY0Mj1vh=o+vrv_bJ8AwZ96wBXYPvMeQT2XcA@mail.gmail.com
The udl kms driver writes messages to the syslog whenever some application
opens or closes /dev/fb0 and whenever the user switches between the
Xserver and the console.
This patch changes the priority of these messages to debug.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
spin_lock_irqsave and spin_unlock_irqrestore is inteded to be called from
a context where it is unknown if interrupts are enabled or disabled (such
as interrupt handlers). From a process context, we should call
spin_lock_irq and spin_unlock_irq, that avoids the costly pushf and popf
instructions.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Modern processors can detect linear memory accesses and prefetch data
automatically, so there's no need to use prefetch.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Division is slow, so it shouldn't be done by the pixel generating code.
The driver supports only 2 or 4 bytes per pixel, so we can replace
division with a shift.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
We must use kzalloc when allocating the fb_deferred_io structure.
Otherwise, the field first_io is undefined and it causes a crash.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Allocations larger than PAGE_ALLOC_COSTLY_ORDER are unreliable and they
may fail anytime. This patch fixes the udl kms driver so that when a large
alloactions fails, it tries to do multiple smaller allocations.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
If we leave urbs around, it causes not only leak, but also memory
corruption. This patch fixes the function udl_free_urb_list, so that it
always waits for all urbs that are in progress.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Adds bindings for Snapdragon 845 display processing unit
Changes in v2:
- Use SoC specific compatibles for mdss and dpu (Rob Herring)
- Use assigned-clocks to set initial clock frequency (Rob Herring)
Changes in v3 (all suggested by Rob Herring):
- Rename mdss_phys to mdss
- Correct description for clocks/assigned-clocks
- Rename mdp_phys to mdp
- Rename vbif_phys to vbif
- Remove redundant interrupt-parent from mdss_mdp
- Fully specify 'ranges' and use relative reg address in mdss_mdp
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Rajesh Yadav <ryadav@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Adds mdp transfer time to msm dsi binding
Changes in v3:
- Added Rob's R-b
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Rajesh Yadav <ryadav@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Mark a number of static functions that are only unsed in the file
that defines them and remove the prototypes from the headers where
needed.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Remove dpu_format_get_block_size, dpu_format_get_framebuffer_size,
dpu_set_scaler_v2 and dpu_copy_formats they are unused and unneeded.
Signed-off-by: Jordan Crouse <jcrouse@codeauorora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
None of the functions in dpu_kms_utils.c seem to be used so
remove them all.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Remove a chunk of unused code from drm_crtc.c, namely
dpu_crtc_res_add, dpu_crtc_res_get, dpu_crtc_res_put
and associated static functions.
Also zap dpu_crtc_event_queue(), helper functions
and members.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Remove dpu_encoder_check_mode and dpu_encoder_helper_hw_release
frmo drm_encoder.c as they appear to be unused.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
PTR_RET is deprecated, use PTR_ERR_OR_ZERO instead.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The suspend/resume functions are not referenced when power
management is disabled:
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c:1288:12: error: 'dpu_runtime_resume' defined but not used [-Werror=unused-function]
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c:1261:12: error: 'dpu_runtime_suspend' defined but not used [-Werror=unused-function]
This marks them as __maybe_unused to let the compiler
drop the functions without complaining.
Fixes: 591225291ca2 ("drm/msm: Add SDM845 DPU support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Fix the sparse error. the dpu_rm_init declaration is not consistent
with the implement.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
[robclark un-typo'd subject line]
Signed-off-by: Rob Clark <robdclark@gmail.com>
All users of do_gettimeofday() have been removed, but this one recently
crept in, along with an incorrect printing of the microseconds portion.
This converts it to using ktime_get_real_timespec64() as a direct
replacement, and adds the leading zeroes. I considered using monotonic
times (ktime_get()) instead, but as this timestamp appears to only
be used for humans rather than compared with other timestamps, the
real time domain is probably good enough.
Fixes: e43b045e2c82 ("drm/msm/gpu: Capture the state of the GPU")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This fixes up a collision between introducing dual-channel support and
the dsi refactors. This patch applies the same dual-channel
considerations and pclk calculations to both v2 and 6G, with a bit of
abstracting for good measure.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
In these cases, we want to enumerate _all_ clocks, not just the ones
that are assigned a rate.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Should work with the legacy handling in of, but we shouldn't rely on
that.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
For hangs, dump copy out the contents of the buffer objects attached to the
guilty submission and print them in the crash dump report.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
HLSQ, SP and TP registers are only accessible from a special
aperture and to make matters worse the aperture is blocked from
the CPU on targets that can support secure rendering. Luckily the
GPU hardware has its own purpose built register dumper that can
access the registers from the aperture. Add a5xx specific code
to program the crashdumper and retrieve the wayward registers
and dump them for the crash state.
Also, remove a block of registers the regular CPU accessible
list that aren't useful for debug which helps reduce the size
of the crash state file by a goodly amount.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add the contents of each ringbuffer to the GPU state and dump the
data in the crash file encoded with ascii85. To save space only
the used portions of the ringbuffer are dumped.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Convert the format of the 'show' debugfs file and the crash
dump to a format resembling YAML. This should be easier to
parse and be more flexible for future changes and expansions.
v2: Use a standard .rst for the msm crashdump documentation
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Capture the GPU state on a GPU hang and store it for later playback
via the devcoredump facility. Only one crash state is stored at a
time on the assumption that the first hang is usually the most
interesting. The existing crash state can be cleared after capturing
it and then a new one will be captured on the next hang.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Do a bit of cleanup to prepare for upcoming changes to pass the
hanging task comm and cmdline to the crash dump function.
v2: Use GFP_ATOMIC while holding the rcu lock per Chris Wilson
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Convert the existing GPU show function to use the GPU state to
dump the information rather than reading it directly from the hardware.
This will require an additional step to capture the state before
dumping it for the existing nodes but it will greatly facilitate reusing
the same code for dumping a previously captured state from a GPU hang.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add the infrastructure to capture the current state of the GPU and
store it in memory so that it can be dumped later.
For now grab the same basic ringbuffer information and registers
that are provided by the debugfs 'gpu' node but obviously this should
be extended to capture a much larger set of GPU information.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add a puts function for the coredump printer to bypass printf()
for constant strings for a speed boost. Reorganize the
coredump printf callback to share as much code as possible.
v2: Try to reuse code between print and puts as suggested by
Chris Wilson
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add a puts() function to use seq_puts() to help speed up
up print time for constant strings.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add drm_puts() for a much faster path to print constant strings
into a drm_printer object with memcpy and friends. This can
have seconds off of really large outputs such as GPU dumps.
If the drm_printer object supports a custom puts function then
use that otherwise fall back to the slower legacy printf call.
v2: Add documentation for drm_puts() per Daniel Vetter
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
[robclark fix minor htmldocs warning]
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add a drm printer suitable for use with the read callback for
devcoredump or other suitable buffer based output format that
isn't otherwise covered by seq_file.
v2: Add improved documentation per Daniel Vetter
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The i915 DRM driver very cleverly used ascii85 encoding for their
GPU state file. Move the encode functions to a general header file to
support other drivers that might be interested in the same
functionality.
v4: Make the return value const char * as suggested by Chris Wilson
v3: Fix error_puts -> err_puts pointed out by the 01.org bot
v2: Update API to be cleaner for the caller as suggested by Chris Wilson
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This is amdkfd pull for 4.19. The major changes are:
- Add Raven support. Raven refers to Ryzen APUs with integrated GFXv9 GPU.
- Integrate GPU reset support
In addition, there are a couple of small fixes and improvements, such as:
- Better handling and reporting to user of VM faults
- Fix race upon context restore
- Allow the user to use specific Compute Units
- Basic power management
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180728122306.GA5235@ogabbay-vm
introduced in 4.18-rc4.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Some miscellaneous ext4 fixes for 4.18; one fix is for a regression
introduced in 4.18-rc4.
Sorry for the late-breaking pull. I was originally going to wait for
the next merge window, but Eric Whitney found a regression introduced
in 4.18-rc4, so I decided to push out the regression plus the other
fixes now. (The other commits have been baking in linux-next since
early July)"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix check to prevent initializing reserved inodes
ext4: check for allocation block validity with block group locked
ext4: fix inline data updates with checksums enabled
ext4: clear mmp sequence number when remounting read-only
ext4: fix false negatives *and* false positives in ext4_check_descriptors()
Anatoly Trosinenko reports that a corrupted squashfs image can cause a
kernel oops. It turns out that squashfs can end up being confused about
negative fragment lengths.
The regular squashfs_read_data() does check for negative lengths, but
squashfs_read_metadata() did not, and the fragment size code just
blindly trusted the on-disk value. Fix both the fragment parsing and
the metadata reading code.
Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Phillip Lougher <phillip@squashfs.org.uk>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 8844618d8a: "ext4: only look at the bg_flags field if it is
valid" will complain if block group zero does not have the
EXT4_BG_INODE_ZEROED flag set. Unfortunately, this is not correct,
since a freshly created file system has this flag cleared. It gets
almost immediately after the file system is mounted read-write --- but
the following somewhat unlikely sequence will end up triggering a
false positive report of a corrupted file system:
mkfs.ext4 /dev/vdc
mount -o ro /dev/vdc /vdc
mount -o remount,rw /dev/vdc
Instead, when initializing the inode table for block group zero, test
to make sure that itable_unused count is not too large, since that is
the case that will result in some or all of the reserved inodes
getting cleared.
This fixes the failures reported by Eric Whiteney when running
generic/230 and generic/231 in the the nojournal test case.
Fixes: 8844618d8a ("ext4: only look at the bg_flags field if it is valid")
Reported-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
distributions that have certain systemd versions in some cases
combined with patches to libcrypt for FIPS/FEDRAMP compliance, have
led to boot-time stalls for some hardware. The reaction by some
distros and Linux sysadmins has been to install packages that try to
do complicated things with the CPU and hope that leads to randomness.
To mitigate this, if RDRAND is available, mix it into entropy provided
by userspace. It won't hurt. and it will probably help.
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Merge tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random fixes from Ted Ts'o:
"In reaction to the fixes to address CVE-2018-1108, some Linux
distributions that have certain systemd versions in some cases
combined with patches to libcrypt for FIPS/FEDRAMP compliance, have
led to boot-time stalls for some hardware.
The reaction by some distros and Linux sysadmins has been to install
packages that try to do complicated things with the CPU and hope that
leads to randomness.
To mitigate this, if RDRAND is available, mix it into entropy provided
by userspace. It won't hurt, and it will probably help"
* tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: mix rdrand with entropy sent in from userspace
- OF flag fix for special regulator flags.
- Fix up the Uniphier IRQ callback.
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Merge tag 'gpio-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Just a smallish OF fix and a driver fix:
- OF flag fix for special regulator flags
- fix up the Uniphier IRQ callback"
* tag 'gpio-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: uniphier: set legitimate irq trigger type in .to_irq hook
gpio: of: Handle fixed regulator flags properly
- Revert an errata workaround for the BCM5300X platform that was
merged for v4.18-rc2 but has been found to cause hangs on at least
systems using the BCM4718A1.
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Merge tag 'mips_fixes_4.18_5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fix from Paul Burton:
"Here's one more MIPS fix, reverting an errata workaround that was
merged for v4.18-rc2 but has since been found to cause system hangs on
some BCM4718A1-based systems by the OpenWRT project"
* tag 'mips_fixes_4.18_5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
Revert "MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum"
Pull i2c fixes from Wolfram Sang:
"Some driver bugfixes"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: imx: use open drain for recovery GPIO
i2c: rcar: handle RXDMA HW behaviour on Gen3
i2c: imx: Fix reinit_completion() use
i2c: davinci: Avoid zero value of CLKH
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Merge tag 'for-linus-20180727' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Bigger than usual at this time, mostly due to the O_DIRECT corruption
issue and the fact that I was on vacation last week. This contains:
- NVMe pull request with two fixes for the FC code, and two target
fixes (Christoph)
- a DIF bio reset iteration fix (Greg Edwards)
- two nbd reply and requeue fixes (Josef)
- SCSI timeout fixup (Keith)
- a small series that fixes an issue with bio_iov_iter_get_pages(),
which ended up causing corruption for larger sized O_DIRECT writes
that ended up racing with buffered writes (Martin Wilck)"
* tag 'for-linus-20180727' of git://git.kernel.dk/linux-block:
block: reset bi_iter.bi_done after splitting bio
block: bio_iov_iter_get_pages: pin more pages for multi-segment IOs
blkdev: __blkdev_direct_IO_simple: fix leak in error case
block: bio_iov_iter_get_pages: fix size of last iovec
nvmet: only check for filebacking on -ENOTBLK
nvmet: fixup crash on NULL device path
scsi: set timed out out mq requests to complete
blk-mq: export setting request completion state
nvme: if_ready checks to fail io to deleting controller
nvmet-fc: fix target sgl list on large transfers
nbd: handle unexpected replies better
nbd: don't requeue the same request twice.
Merge misc fixes from Andrew Morton:
"11 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
kvm, mm: account shadow page tables to kmemcg
zswap: re-check zswap_is_full() after do zswap_shrink()
include/linux/eventfd.h: include linux/errno.h
mm: fix vma_is_anonymous() false-positives
mm: use vma_init() to initialize VMAs on stack and data segments
mm: introduce vma_init()
mm: fix exports that inadvertently make put_page() EXPORT_SYMBOL_GPL
ipc/sem.c: prevent queue.status tearing in semop
mm: disallow mappings that conflict for devm_memremap_pages()
kasan: only select SLUB_DEBUG with SYSFS=y
delayacct: fix crash in delayacct_blkio_end() after delayacct init failure
- Fix disabling of kpti on Thunder-X machines
- Fix premature BUILD_BUG_ON() found with randconfig
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Inevitably, after saying that I hoped we would be done on the fixes
front, a couple of issues have cropped up over the last week. Next
time I'll stay schtum.
We've fixed an over-eager BUILD_BUG_ON() which Arnd ran into with
arndconfig, as well as ensuring that KPTI really is disabled on
Thunder-X1, where the cure is worse than the disease (this regressed
when we reworked the heterogeneous CPU feature checking).
Summary:
- Fix disabling of kpti on Thunder-X machines
- Fix premature BUILD_BUG_ON() found with randconfig"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fix vmemmap BUILD_BUG_ON() triggering on !vmemmap setups
arm64: Check for errata before evaluating cpu features
