sfrench/cifs-2.6.git
6 years agodrm/i915: Add NV12 support to intel_framebuffer_init
Chandra Konduru [Fri, 11 May 2018 21:33:15 +0000 (03:03 +0530)]
drm/i915: Add NV12 support to intel_framebuffer_init

This patch adds NV12 as supported format
to intel_framebuffer_init and performs various checks.

v2:
-Fix an issue in checks added (Chandra Konduru)

v3: rebased (me)

v4: Review comments by Ville addressed
Added platform check for NV12 in intel_framebuffer_init
Removed offset checks for NV12 case

v5: Addressed review comments by Clinton A Taylor
This NV12 support only correctly works on SKL.
Plane color space conversion is different on GLK and later platforms
causing the colors to display incorrectly.
Ville's plane color space property patch series
in review will fix this issue.
- Restricted the NV12 case in intel_framebuffer_init to
SKL and BXT only.

v6: Rebased (me)

v7: Addressed review comments by Ville
Restricting the NV12 to BXT for now.

v8: Rebased (me)
Restricting the NV12 changes to BXT and KBL for now.

v9: Rebased (me)

v10: NV12 supported by all GEN >= 9.
Making this change in intel_framebuffer_init. This is
part of addressing Maarten's review comments.
Comment under v8 no longer applicable

v11: Addressed review comments from Shashank Sharma

v12: Adding Reviewed By from Shashank Sharma

v13: Addressed review comments from Juha-Pekka Heikkila
"NV12 not to be supported by SKL"

v14: Addressed review comments from Maarten.
Add checks for fb width height for NV12 and fail the fb
creation if check fails. Added reviewed by from
Juha-Pekka Heikkila

v15: Rebased the series

v16: Setting the minimum value during fb creating to 16
as per Bspec for NV12. Earlier minimum was expected
to be > 16. Now changed it to >=16.

v17: Adding restriction to framebuffer_init - the fb
width and height should be a multiplier of 4

v18: Added RB from Maarten. Included Maarten's review comments
Dont allow CCS formats for fb creation of NV12

v19: Review comments from Maarten addressed -
Removing BROXTON support for NV12 due to WA826

Credits-to: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Tested-by: Clinton Taylor <clinton.a.taylor@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Clinton Taylor <clinton.a.taylor@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Signed-off-by: Nabendu Maiti <nabendu.bikash.maiti@intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1526074397-10457-5-git-send-email-vidya.srinivas@intel.com
6 years agodrm/i915: Add skl_check_nv12_surface for NV12
Maarten Lankhorst [Fri, 11 May 2018 21:33:14 +0000 (03:03 +0530)]
drm/i915: Add skl_check_nv12_surface for NV12

We skip src trunction/adjustments for
NV12 case and handle the sizes directly.
Without this, pipe fifo underruns are seen on APL/KBL.

v2: For NV12, making the src coordinates multiplier of 4

v3: Moving all the src coords handling code for NV12
to skl_check_nv12_surface

v4: Added RB from Mika

v5: Rebased the series. Removed checks of mult of 4 in
skl_update_scaler, Added NV12 condition in intel_check_sprite_plane
where src x/w is being checked for mult of 2 for yuv planes.

v6: Made changes to skl_check_nv12_surface as per WA#1106

Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1526074397-10457-4-git-send-email-vidya.srinivas@intel.com
6 years agodrm/i915: Enable Display WA 0528
Vidya Srinivas [Fri, 11 May 2018 21:33:13 +0000 (03:03 +0530)]
drm/i915: Enable Display WA 0528

Possible hang with NV12 plane surface formats.
WA: When the plane source pixel format is NV12,
the CHICKEN_PIPESL_* register bit 22 must be set to 1
and the render decompression must not be enabled
on any of the planes in that pipe.

v2: removed unnecessary POSTING_READ

v3: Added RB from Maarten

v4: Removed support for NV12 for BROXTON

Credits-to: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1526074397-10457-3-git-send-email-vidya.srinivas@intel.com
6 years agodrm/i915: Enable display workaround 827 for all planes, v2.
Maarten Lankhorst [Fri, 11 May 2018 21:33:12 +0000 (03:03 +0530)]
drm/i915: Enable display workaround 827 for all planes, v2.

The workaround was applied only to the primary plane, but is required
on all planes. Iterate over all planes in the crtc atomic check to see
if the workaround is enabled, and only perform the actual toggling in
the pre/post plane update functions.

Changes since v1:
- Track active NV12 planes in a nv12_planes bitmask. (Ville)

v2: Removing BROXTON support for NV12 due to WA826

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1526074397-10457-2-git-send-email-vidya.srinivas@intel.com
6 years agodrm/i915/psr: Check if VBT says PSR can be enabled.
Dhinakaran Pandiyan [Wed, 9 May 2018 00:35:24 +0000 (17:35 -0700)]
drm/i915/psr: Check if VBT says PSR can be enabled.

Driver features data block has a boolean flag for PSR, use this to decide
whether PSR should be enabled on a platform. The module parameter can
still be used to override this.

Note: The feature currently remains disabled by default for all platforms
irrespective of what VBT says.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180509003524.3199-1-dhinakaran.pandiyan@intel.com
6 years agodrm/i915/guc: Make submission tasklet hardirq safe
Chris Wilson [Tue, 8 May 2018 21:03:18 +0000 (22:03 +0100)]
drm/i915/guc: Make submission tasklet hardirq safe

Prepare to allow the GuC submission to be run from underneath a
hardirq timer context (and not just the current softirq context) as is
required for fast preemption resets and context switches.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508210318.10274-2-chris@chris-wilson.co.uk
6 years agodrm/i915/execlists: Make submission tasklet hardirq safe
Chris Wilson [Tue, 8 May 2018 21:03:17 +0000 (22:03 +0100)]
drm/i915/execlists: Make submission tasklet hardirq safe

Prepare to allow the execlists submission to be run from underneath a
hardirq timer context (and not just the current softirq context) as is
required for fast preemption resets and context switches.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508210318.10274-1-chris@chris-wilson.co.uk
6 years agodrm/i915/selftests: Only switch to kernel context when locked
Chris Wilson [Wed, 9 May 2018 06:59:26 +0000 (07:59 +0100)]
drm/i915/selftests: Only switch to kernel context when locked

In igt_flush_test() we try to switch back to the kernel context, but we
are only able to do so when we are called with struct_mutex held.

More of my CI fallout from lockdep being temporarily suppressed :(

Fixes: 4cdf65ce8cc2 ("drm/i915/selftests: Return to kernel context after each test")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180509065926.19207-1-chris@chris-wilson.co.uk
6 years agodrm/i915/selftests: Create mock_engine() under struct_mutex
Chris Wilson [Tue, 8 May 2018 21:10:56 +0000 (22:10 +0100)]
drm/i915/selftests: Create mock_engine() under struct_mutex

Calling mock_engine() calls i915_timeline_init() and that requires
struct_mutex to be held as it adds itself to the global list of
timelines. This error was introduced by commit a89d1f921c15 ("drm/i915:
Split i915_gem_timeline into individual timelines") but the issue was
masked in CI by the earlier lockdep spam.

Fixes: a89d1f921c15 ("drm/i915: Split i915_gem_timeline into individual timelines")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508211056.17151-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Annotate timeline lock nesting
Chris Wilson [Tue, 8 May 2018 15:35:14 +0000 (16:35 +0100)]
drm/i915: Annotate timeline lock nesting

CI noticed

<4>[   23.430701] ============================================
<4>[   23.430706] WARNING: possible recursive locking detected
<4>[   23.430713] 4.17.0-rc4-CI-CI_DRM_4156+ #1 Not tainted
<4>[   23.430720] --------------------------------------------
<4>[   23.430725] systemd-udevd/169 is trying to acquire lock:
<4>[   23.430732]         (ptrval) (&(&timeline->lock)->rlock){....}, at: move_to_timeline+0x48/0x12c [i915]
<4>[   23.430888]
                  but task is already holding lock:
<4>[   23.430894]         (ptrval) (&(&timeline->lock)->rlock){....}, at: i915_request_submit+0x1a/0x40 [i915]
<4>[   23.430995]
                  other info that might help us debug this:
<4>[   23.431002]  Possible unsafe locking scenario:

<4>[   23.431007]        CPU0
<4>[   23.431010]        ----
<4>[   23.431013]   lock(&(&timeline->lock)->rlock);
<4>[   23.431021]   lock(&(&timeline->lock)->rlock);
<4>[   23.431028]
                   *** DEADLOCK ***

<4>[   23.431036]  May be due to missing lock nesting notation

<4>[   23.431044] 5 locks held by systemd-udevd/169:
<4>[   23.431049]  #0:         (ptrval) (&dev->mutex){....}, at: __driver_attach+0x42/0xe0
<4>[   23.431065]  #1:         (ptrval) (&dev->mutex){....}, at: __driver_attach+0x50/0xe0
<4>[   23.431078]  #2:         (ptrval) (&dev->struct_mutex){+.+.}, at: i915_gem_init+0xca/0x630 [i915]
<4>[   23.431174]  #3:         (ptrval) (rcu_read_lock){....}, at: submit_notify+0x35/0x124 [i915]
<4>[   23.431271]  #4:         (ptrval) (&(&timeline->lock)->rlock){....}, at: i915_request_submit+0x1a/0x40 [i915]
<4>[   23.431369]
                  stack backtrace:
<4>[   23.431377] CPU: 0 PID: 169 Comm: systemd-udevd Not tainted 4.17.0-rc4-CI-CI_DRM_4156+ #1
<4>[   23.431385] Hardware name: Dell Inc.                 OptiPlex GX280               /0G8310, BIOS A04 02/09/2005
<4>[   23.431394] Call Trace:
<4>[   23.431403]  dump_stack+0x67/0x9b
<4>[   23.431411]  __lock_acquire+0xc67/0x1b50
<4>[   23.431421]  ? ring_buffer_lock_reserve+0x154/0x3f0
<4>[   23.431429]  ? lock_acquire+0xa6/0x210
<4>[   23.431435]  lock_acquire+0xa6/0x210
<4>[   23.431530]  ? move_to_timeline+0x48/0x12c [i915]
<4>[   23.431540]  _raw_spin_lock+0x2a/0x40
<4>[   23.431634]  ? move_to_timeline+0x48/0x12c [i915]
<4>[   23.431730]  move_to_timeline+0x48/0x12c [i915]
<4>[   23.431826]  __i915_request_submit+0xfa/0x280 [i915]
<4>[   23.431923]  i915_request_submit+0x25/0x40 [i915]
<4>[   23.432024]  i9xx_submit_request+0x11/0x140 [i915]
<4>[   23.432120]  submit_notify+0x8d/0x124 [i915]
<4>[   23.432202]  __i915_sw_fence_complete+0x81/0x250 [i915]
<4>[   23.432300]  __i915_request_add+0x31c/0x7c0 [i915]
<4>[   23.432395]  i915_gem_init+0x621/0x630 [i915]
<4>[   23.432476]  i915_driver_load+0xbee/0x10b0 [i915]
<4>[   23.432485]  ? trace_hardirqs_on_caller+0xe0/0x1b0
<4>[   23.432566]  i915_pci_probe+0x29/0x90 [i915]
<4>[   23.432574]  pci_device_probe+0xa1/0x130
<4>[   23.432582]  driver_probe_device+0x306/0x480
<4>[   23.432589]  __driver_attach+0xb7/0xe0
<4>[   23.432596]  ? driver_probe_device+0x480/0x480
<4>[   23.432602]  ? driver_probe_device+0x480/0x480
<4>[   23.432609]  bus_for_each_dev+0x74/0xc0
<4>[   23.432616]  bus_add_driver+0x15f/0x250
<4>[   23.432623]  ? 0xffffffffa02d7000
<4>[   23.432629]  driver_register+0x52/0xc0
<4>[   23.432635]  ? 0xffffffffa02d7000
<4>[   23.432642]  do_one_initcall+0x58/0x370
<4>[   23.432653]  ? do_init_module+0x1d/0x1ea
<4>[   23.432660]  ? rcu_read_lock_sched_held+0x6f/0x80
<4>[   23.432667]  ? kmem_cache_alloc_trace+0x282/0x2e0
<4>[   23.432675]  do_init_module+0x56/0x1ea
<4>[   23.432682]  load_module+0x2435/0x2b20
<4>[   23.432694]  ? __se_sys_finit_module+0xd3/0xf0
<4>[   23.432701]  __se_sys_finit_module+0xd3/0xf0
<4>[   23.432710]  do_syscall_64+0x55/0x190
<4>[   23.432717]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[   23.432724] RIP: 0033:0x7fa780782839
<4>[   23.432729] RSP: 002b:00007ffcea73e668 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
<4>[   23.432738] RAX: ffffffffffffffda RBX: 0000561a472a4b30 RCX: 00007fa780782839
<4>[   23.432745] RDX: 0000000000000000 RSI: 00007fa7804610e5 RDI: 000000000000000e
<4>[   23.432752] RBP: 00007fa7804610e5 R08: 0000000000000000 R09: 00007ffcea73e780
<4>[   23.432758] R10: 000000000000000e R11: 0000000000000246 R12: 0000000000000000
<4>[   23.432765] R13: 0000561a47296450 R14: 0000000000020000 R15: 0000561a472a4b30

but did not report it as an issue as it only occurred during the first
module on boot. This is due to the removal of the distinct global
timeline, and its separate lock class. So instead mark up the expected
nesting. An alternative would be to define a separate lock class for the
engine, but since we only expect to have a single point of nesting, we
can avoid having multiple lock classes for the struct.

Fixes: a89d1f921c15 ("drm/i915: Split i915_gem_timeline into individual timelines")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Tested-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508153514.20251-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Remove unused i915_flip tracepoints
Chris Wilson [Tue, 8 May 2018 15:15:52 +0000 (16:15 +0100)]
drm/i915: Remove unused i915_flip tracepoints

The i915_flip* tracepoints are no longer in use since the removal of CS
flip in commit 8b5d27b911d7 ("drm/i915: Remove intel_flip_work
infrastructure")

References: 8b5d27b911d7 ("drm/i915: Remove intel_flip_work infrastructure")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508151552.31024-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Disable tasklet scheduling across initial scheduling
Chris Wilson [Mon, 7 May 2018 13:57:26 +0000 (14:57 +0100)]
drm/i915: Disable tasklet scheduling across initial scheduling

During request submission, we call the engine->schedule() function so
that we may reorder the active requests as required for inheriting the
new request's priority. This may schedule several tasklets to run on the
local CPU, but we will need to schedule the tasklets again for the new
request. Delay all the local tasklets until the end, so that we only
have to process the queue just once.

v2: Beware PREEMPT_RCU, as then local_bh_disable() is then not a
superset of rcu_read_lock().

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180507135731.10587-2-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
6 years agodrm/i915: Flush submission tasklet after bumping priority
Chris Wilson [Mon, 7 May 2018 13:57:25 +0000 (14:57 +0100)]
drm/i915: Flush submission tasklet after bumping priority

When called from process context tasklet_schedule() defers itself to
ksoftirqd. From experience this may cause unacceptable latencies of over
200ms in executing the submission tasklet, our goal is to reprioritise
the HW execution queue and trigger HW preemption immediately, so disable
bh over the call to schedule and force the tasklet to run afterwards if
scheduled.

v2: Keep rcu_read_lock() around for PREEMPT_RCU

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180507135731.10587-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
6 years agodrm/i915/selftests: Return to kernel context after each test
Chris Wilson [Tue, 8 May 2018 11:53:12 +0000 (12:53 +0100)]
drm/i915/selftests: Return to kernel context after each test

As we flush each test and wait for idle before the next, also switch
back to the kernel context. This helps limit the amount of collateral
damage a test may cause by resetting to the default state each time (and
also helps clean up temporaries used by the test).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508115312.12628-1-chris@chris-wilson.co.uk
6 years agodrm/i915: don't leak the pin_map on error
Matthew Auld [Thu, 1 Mar 2018 11:46:39 +0000 (11:46 +0000)]
drm/i915: don't leak the pin_map on error

Add some onion to populate_lr_context.

v2: prefer err_unpin_ctx
    drop the fixes tag, worst case we just spew a warn before everything
    is cleaned up and balance is restored

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180301114639.510-1-matthew.auld@intel.com
6 years agodrm/i915/selftests: Flush GPU activity before completing live_contexts
Chris Wilson [Sat, 5 May 2018 09:10:14 +0000 (10:10 +0100)]
drm/i915/selftests: Flush GPU activity before completing live_contexts

igt_ctx_exec() expects that we retire all active requests/objects before
completing, so that when we clean up the files afterwards they are ready
to be freed. Before we do so, it is then prudent to ensure that we have
indeed retired the GPU activity, raising an error if it fails. If we do
not, we run the risk of triggering an assertion when freeing the object:

  __i915_gem_free_objects:4793 GEM_BUG_ON(i915_gem_object_is_active(obj))

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180505091014.26126-2-chris@chris-wilson.co.uk
6 years agodrm/i915/selftests: Refactor common flush_test()
Chris Wilson [Sat, 5 May 2018 09:10:13 +0000 (10:10 +0100)]
drm/i915/selftests: Refactor common flush_test()

Pull igt_flush_test() out into its own library before copying and
pasting the code for a third time.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180505091014.26126-1-chris@chris-wilson.co.uk
6 years agodrm/i915/userptr: reject zero user_size
Matthew Auld [Wed, 2 May 2018 19:50:21 +0000 (20:50 +0100)]
drm/i915/userptr: reject zero user_size

Operating on a zero sized GEM userptr object will lead to explosions.

Fixes: 5cc9ed4b9a7a ("drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl")
Testcase: igt/gem_userptr_blits/input-checking
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502195021.30900-1-matthew.auld@intel.com
6 years agodrm/i915/execlists: Cache the priolist when rescheduling
Chris Wilson [Tue, 8 May 2018 00:30:46 +0000 (01:30 +0100)]
drm/i915/execlists: Cache the priolist when rescheduling

When rescheduling a change of dependencies, they all need to be added to
the same priolist (at least the ones on the same engine!). Since we
likely want to move a batch of requests, keep the priolist around.

v2: Throw in an assert to catch trivial errors quickly.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508003046.2633-2-chris@chris-wilson.co.uk
6 years agodrm/i915/execlists: Drop unused parameter to lookup_priolist()
Chris Wilson [Tue, 8 May 2018 00:30:45 +0000 (01:30 +0100)]
drm/i915/execlists: Drop unused parameter to lookup_priolist()

lookup_priolist() no longer attaches the request into the priolist, it
just returns the priolist for the given priority instead. Drop the
unused parameter.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508003046.2633-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Don't request a bug report for unsafe module parameters
Chris Wilson [Sun, 6 May 2018 18:31:47 +0000 (19:31 +0100)]
drm/i915: Don't request a bug report for unsafe module parameters

Unsafe module parameters are just that, unsafe. If the user is foolish
enough to try them and the kernel breaks, they get to keep both pieces.
Don't ask them to file a bug report if they broke it themselves.

References: https://bugs.freedesktop.org/show_bug.cgi?id=106423
Fixes: d15d7538c6d2 ("drm/i915: Tune down init error message due to failure injection")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180506183147.2690-1-chris@chris-wilson.co.uk
6 years agodrm/i915/icl: compute the MG PLL registers
Paulo Zanoni [Wed, 28 Mar 2018 21:58:01 +0000 (14:58 -0700)]
drm/i915/icl: compute the MG PLL registers

This implements the "MG PLL Programming" sequence from our spec. The
biggest problem was that the spec assumes real numbers, so we had to
adjust some numbers and calculations due to the fact that the Kernel
prefers to deal with integers.

I recommend grabbing some coffee, a pen and paper before reviewing
this patch.

v2:
 - Correctly identify DP encoders after upstream change.
 - Small checkpatch issues.
 - Rebase.
v3:
 - Try to impove the comment on the tdc_targetcnt calculation based on
   Manasi's feedback (Manasi).
 - Rebase.

Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180328215803.13835-7-paulo.r.zanoni@intel.com
6 years agodrm/i915/icl: compute the combo PHY (DPLL) DP registers
Paulo Zanoni [Wed, 28 Mar 2018 21:58:00 +0000 (14:58 -0700)]
drm/i915/icl: compute the combo PHY (DPLL) DP registers

Just use the hardcoded tables provided by our spec.

v2: Rebase.
v3: Clarify that 38.4 uses the 19.2 table (James).

Reviewed-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180328215803.13835-6-paulo.r.zanoni@intel.com
6 years agodrm/i915/icl: compute the combo PHY (DPLL) HDMI registers
Paulo Zanoni [Wed, 28 Mar 2018 21:57:59 +0000 (14:57 -0700)]
drm/i915/icl: compute the combo PHY (DPLL) HDMI registers

HDMI mode DPLL programming on ICL is the same as CNL, so just reuse
the CNL code.

v2:
 - Properly detect HDMI crtcs.
 - Rebase after changes to the cnl function (clock * 1000).
v3:
 - Add a comment to clarify why we treat 38.4 as 19.2 (James).

Reviewed-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180328215803.13835-5-paulo.r.zanoni@intel.com
6 years agodrm/i915/icl: add basic support for the ICL clocks
Paulo Zanoni [Fri, 27 Apr 2018 23:14:36 +0000 (16:14 -0700)]
drm/i915/icl: add basic support for the ICL clocks

This commit introduces the definitions for the ICL clocks and adds the
basic functions to the shared DPLL framework. It adds code for the
Enable and Disable sequences for some PLLs, but it does not have the
code to compute the actual PLL values, which are marked as TODO
comments and should be introduced as separate commits.

Special thanks to James Ausmus for investigating and fixing a bug with
the placement of icl_unmap_plls_to_ports() function.

v2:
 - Rebase around dpll_lock changes.
v3:
 - The spec now says what the timeouts should be.
 - Touch DPCLKA_CFGCR0_ICL at the appropriate time so we don't freeze
   the machine.
 - Checkpatch found a white space problem.
 - Small adjustments before upstreaming.
v4:
 - Move the ICL checks out of the *map_plls_to_ports() functions
  (James)
 - Add extra encoder check (James)
 - Call icl_unmap_plls_to_ports() later (James)
v5:
 - Rebase after the pll struct changes.
v6:
 - Properly make the unmap function based on encoders_post_disable()
   with regarding to checks and iterators.
 - Address checkpatch comment on "min = max = x()".

Cc: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: James Ausmus <james.ausmus@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180427231436.9353-1-paulo.r.zanoni@intel.com
6 years agodrm/i915: Add documentation to gen9_set_dc_state()
Imre Deak [Tue, 17 Apr 2018 11:31:47 +0000 (14:31 +0300)]
drm/i915: Add documentation to gen9_set_dc_state()

Add documentation to gen9_set_dc_state() on what enabling a given DC
state means and at what point HW/DMC actually enters/exits these states.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180417113147.25120-1-imre.deak@intel.com
6 years agodrm/i915/selftests: Skip the execlists tests on !execlists machines
Chris Wilson [Fri, 4 May 2018 12:42:02 +0000 (13:42 +0100)]
drm/i915/selftests: Skip the execlists tests on !execlists machines

Ignore the tests looking at the innards of execlists and its submission
tasklets on machines that don't support execlists!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180504124202.24894-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Fix drm:intel_enable_lvds ERROR message in kernel log
Florent Flament [Thu, 19 Apr 2018 16:07:00 +0000 (19:07 +0300)]
drm/i915: Fix drm:intel_enable_lvds ERROR message in kernel log

Fix `[drm:intel_enable_lvds] *ERROR* timed out waiting for panel to
power on` in kernel log at boot time.

Toshiba Satellite Z930 laptops needs between 1 and 2 seconds to power
on its screen during Intel i915 DRM initialization. This currently
results in a `[drm:intel_enable_lvds] *ERROR* timed out waiting for
panel to power on` message appearing in the kernel log during boot
time and when stopping the machine.

This change increases the timeout of the `intel_enable_lvds` function
from 1 to 5 seconds, letting enough time for the Satellite 930 LCD
screen to power on, and suppressing the error message from the kernel
log.

This patch has been successfully tested on Linux 4.14 running on a
Toshiba Satellite Z930.

[vsyrjala: bump the timeout from 2 to 5 seconds to match the DP
 code and properly cover the max hw timeout of ~4 seconds, and
 drop the comment about the specific machine since this is not
 a particulary surprising issue, nor specific to that one machine]

Signed-off-by: Florent Flament <contact@florentflament.com>
Cc: stable@vger.kernel.org
Cc: Pavel Petrovic <ppetrovic@acm.org>
Cc: Sérgio M. Basto <sergio@serjux.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103414
References: https://bugzilla.kernel.org/show_bug.cgi?id=57591
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180419160700.19828-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
6 years agodrm/i915: Include priority and completed status in request in/out tracepoints
Tvrtko Ursulin [Fri, 4 May 2018 11:56:43 +0000 (12:56 +0100)]
drm/i915: Include priority and completed status in request in/out tracepoints

It is useful to see the priority as requests are coming in and completed
status as requests are coming out of the GPU.

To achieve this in a more readable way we need to abandon the common
request_hw tracepoint class.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180504115643.22437-1-tvrtko.ursulin@linux.intel.com
6 years agodrm/i915: Remove assertion of active_rings must be non-empty if active_requests
Chris Wilson [Fri, 4 May 2018 10:11:47 +0000 (11:11 +0100)]
drm/i915: Remove assertion of active_rings must be non-empty if active_requests

"An outstanding request must still be on an active ring somewhere" is
only true if we haven't just been interrupted by the shrinker in the
middle of allocating the request itself. (At the start of
i915_request_alloc() we pin the context and prepare the GT for activity,
marking it as active, and then try to allocate the request. If this
allocation invokes the shrinker, we try to reclaim some space by calling
i915_retire_requests() which may then be confused by the pre-reservation
of active_requests.)

<3>[  125.472695] i915_retire_requests:1429 GEM_BUG_ON(list_empty(&i915->gt.active_rings))
<2>[  125.472792] kernel BUG at drivers/gpu/drm/i915/i915_request.c:1429!
<4>[  125.472822] invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
<4>[  125.498764] Modules linked in: snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel btusb btrtl btbcm btintel cdc_ether snd_hda_codec_realtek bluetooth i915 snd_hda_codec_generic usbnet r8152 mii ecdh_generic lpc_ich mei_me snd_hda_intel snd_hda_codec mei snd_hwdep snd_hda_core snd_pcm prime_numbers
<4>[  125.498923] CPU: 0 PID: 1115 Comm: gem_exec_create Tainted: G     U            4.17.0-rc3-gc49cbe0d1eb8-kasan_32+ #1
<4>[  125.498955] Hardware name: GOOGLE Peppy/Peppy, BIOS MrChromebox 02/04/2018
<4>[  125.499074] RIP: 0010:i915_retire_requests+0x3f2/0x590 [i915]
<4>[  125.499095] RSP: 0018:ffff88004e5dec40 EFLAGS: 00010282
<4>[  125.499117] RAX: 0000000000000010 RBX: ffff8800458f0000 RCX: 0000000000000000
<4>[  125.499140] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff880060c2f6f0
<4>[  125.499164] RBP: ffff88004e5dee30 R08: ffffed000c185ee6 R09: ffffed000c185ee6
<4>[  125.499187] R10: 0000000000000001 R11: ffffed000c185ee5 R12: ffff8800553da160
<4>[  125.499210] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8800458faed0
<4>[  125.499235] FS:  00007fe18f052980(0000) GS:ffff880065400000(0000) knlGS:0000000000000000
<4>[  125.499262] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  125.499282] CR2: 00007f01df11efb8 CR3: 00000000518d4001 CR4: 00000000000606f0
<4>[  125.499304] Call Trace:
<4>[  125.499417]  i915_gem_shrink+0x576/0xb50 [i915]
<4>[  125.499532]  ? i915_gem_shrinker_count+0x2f0/0x2f0 [i915]
<4>[  125.499561]  ? trace_hardirqs_on_thunk+0x1a/0x1c
<4>[  125.499671]  ? i915_gem_shrinker_count+0x1d6/0x2f0 [i915]
<4>[  125.499782]  ? i915_gem_shrinker_scan+0xc4/0x320 [i915]
<4>[  125.499889]  i915_gem_shrinker_scan+0xc4/0x320 [i915]
<4>[  125.499997]  ? i915_gem_shrinker_vmap+0x3a0/0x3a0 [i915]
<4>[  125.500021]  ? do_raw_spin_unlock+0x4f/0x240
<4>[  125.500042]  ? _raw_spin_unlock+0x29/0x40
<4>[  125.500149]  ? i915_gem_shrinker_count+0x1d6/0x2f0 [i915]
<4>[  125.500177]  shrink_slab.part.18+0x23e/0x8f0
<4>[  125.500202]  ? unregister_shrinker+0x1f0/0x1f0
<4>[  125.500226]  ? mem_cgroup_iter+0x379/0xcc0
<4>[  125.500249]  shrink_node+0xa7e/0x1180
<4>[  125.500276]  ? shrink_node_memcg+0x11f0/0x11f0
<4>[  125.500297]  ? __delayacct_freepages_start+0x38/0x80
<4>[  125.500319]  ? __is_insn_slot_addr+0xe3/0x1a0
<4>[  125.500342]  ? recalibrate_cpu_khz+0x10/0x10
<4>[  125.500361]  ? ktime_get+0xb2/0x140
<4>[  125.500382]  do_try_to_free_pages+0x2d3/0xe40
<4>[  125.500407]  ? allow_direct_reclaim.part.23+0x1e0/0x1e0
<4>[  125.500429]  ? shrink_node+0x1180/0x1180
<4>[  125.500450]  ? __read_once_size_nocheck.constprop.4+0x10/0x10
<4>[  125.500476]  try_to_free_pages+0x1af/0x560
<4>[  125.500497]  ? do_try_to_free_pages+0xe40/0xe40
<4>[  125.500525]  __alloc_pages_nodemask+0xadc/0x2130
<4>[  125.500553]  ? gfp_pfmemalloc_allowed+0x150/0x150
<4>[  125.500654]  ? i915_gem_do_execbuffer+0x219d/0x32e0 [i915]
<4>[  125.500678]  ? debug_check_no_locks_freed+0x2a0/0x2a0
<4>[  125.500701]  ? __debug_object_init+0x322/0xd90
<4>[  125.500722]  ? debug_check_no_locks_freed+0x2a0/0x2a0
<4>[  125.500827]  ? i915_gem_do_execbuffer+0xdc2/0x32e0 [i915]
<4>[  125.500942]  ? i915_request_alloc+0x5b5/0x13f0 [i915]
<4>[  125.500964]  ? page_frag_free+0x170/0x170
<4>[  125.500984]  ? debug_check_no_locks_freed+0x2a0/0x2a0
<4>[  125.501008]  new_slab+0x21d/0x5c0
<4>[  125.501029]  ___slab_alloc.constprop.35+0x322/0x3e0
<4>[  125.501052]  ? reservation_object_reserve_shared+0x10b/0x250
<4>[  125.501074]  ? __ww_mutex_lock.constprop.3+0x1104/0x2cf0
<4>[  125.501097]  ? _raw_spin_unlock_irqrestore+0x39/0x60
<4>[  125.501120]  ? fs_reclaim_acquire+0x10/0x10
<4>[  125.501138]  ? lock_acquire+0x138/0x3c0
<4>[  125.501156]  ? lock_acquire+0x3c0/0x3c0
<4>[  125.501176]  ? reservation_object_reserve_shared+0x10b/0x250
<4>[  125.501198]  ? __slab_alloc.isra.27.constprop.34+0x3d/0x70
<4>[  125.501219]  __slab_alloc.isra.27.constprop.34+0x3d/0x70
<4>[  125.501243]  ? reservation_object_reserve_shared+0x10b/0x250
<4>[  125.501265]  __kmalloc_track_caller+0x313/0x350
<4>[  125.501287]  krealloc+0x62/0xb0
<4>[  125.501305]  reservation_object_reserve_shared+0x10b/0x250
<4>[  125.501411]  i915_gem_do_execbuffer+0x2040/0x32e0 [i915]
<4>[  125.501522]  ? eb_relocate_slow+0xad0/0xad0 [i915]
<4>[  125.501544]  ? debug_check_no_locks_freed+0x2a0/0x2a0
<4>[  125.501646]  ? i915_gem_execbuffer2_ioctl+0x108/0x770 [i915]
<4>[  125.501755]  ? i915_gem_execbuffer2_ioctl+0x108/0x770 [i915]
<4>[  125.501779]  ? drm_dev_get+0x20/0x20
<4>[  125.501803]  ? __might_fault+0xea/0x1a0
<4>[  125.501902]  ? i915_gem_execbuffer2_ioctl+0x108/0x770 [i915]
<4>[  125.502012]  ? i915_gem_execbuffer_ioctl+0xb90/0xb90 [i915]
<4>[  125.502116]  ? i915_gem_execbuffer_ioctl+0xb90/0xb90 [i915]
<4>[  125.502218]  i915_gem_execbuffer2_ioctl+0x3c5/0x770 [i915]
<4>[  125.502243]  ? drm_dev_enter+0xe0/0xe0
<4>[  125.502260]  ? lock_acquire+0x138/0x3c0
<4>[  125.502362]  ? i915_gem_execbuffer_ioctl+0xb90/0xb90 [i915]
<4>[  125.502470]  ? i915_gem_object_create.part.28+0x570/0x570 [i915]
<4>[  125.502575]  ? i915_gem_execbuffer_ioctl+0xb90/0xb90 [i915]
<4>[  125.502680]  ? i915_gem_execbuffer_ioctl+0xb90/0xb90 [i915]
<4>[  125.502702]  drm_ioctl_kernel+0x151/0x200
<4>[  125.502721]  ? drm_ioctl_permit+0x2a0/0x2a0
<4>[  125.502746]  drm_ioctl+0x63a/0x920
<4>[  125.502844]  ? i915_gem_execbuffer_ioctl+0xb90/0xb90 [i915]
<4>[  125.502868]  ? drm_getstats+0x20/0x20
<4>[  125.502886]  ? trace_hardirqs_on_thunk+0x1a/0x1c
<4>[  125.502919]  do_vfs_ioctl+0x173/0xe90
<4>[  125.502936]  ? trace_hardirqs_on_thunk+0x1a/0x1c
<4>[  125.502957]  ? ioctl_preallocate+0x170/0x170
<4>[  125.502978]  ? trace_hardirqs_on_thunk+0x1a/0x1c
<4>[  125.503002]  ? retint_kernel+0x2d/0x2d
<4>[  125.503024]  ksys_ioctl+0x35/0x60
<4>[  125.503043]  __x64_sys_ioctl+0x6a/0xb0
<4>[  125.503061]  do_syscall_64+0x97/0x400
<4>[  125.503081]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[  125.503101] RIP: 0033:0x7fe18e4f65d7
<4>[  125.503116] RSP: 002b:00007ffe2ffc06a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
<4>[  125.503145] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe18e4f65d7
<4>[  125.503168] RDX: 00007ffe2ffc07f0 RSI: 0000000040406469 RDI: 0000000000000003
<4>[  125.503191] RBP: 00007ffe2ffc07f0 R08: 0000000000000004 R09: 00007ffe2ffcf080
<4>[  125.503215] R10: 000000000002c7de R11: 0000000000000246 R12: 0000000040406469
<4>[  125.503238] R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
<4>[  125.503268] Code: e8 18 a0 c9 da 48 8b 35 25 3a 47 00 49 c7 c0 a0 3b 88 c0 b9 95 05 00 00 48 c7 c2 e0 49 88 c0 48 c7 c7 8d 3b 5d c0 e8 ee 7e db da <0f> 0b 48 89 ef e8 a4 26 f5 da e9 51 fe ff ff e8 8a 26 f5 da e9
<1>[  125.503548] RIP: i915_retire_requests+0x3f2/0x590 [i915] RSP: ffff88004e5dec40

Fixes: 643b450a594e ("drm/i915: Only track live rings for retiring")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180504101147.26286-1-chris@chris-wilson.co.uk
6 years agodrm/i915/gtt: Tidy up duplicate branches in gen8_gmch_probe()
Chris Wilson [Thu, 3 May 2018 21:29:56 +0000 (22:29 +0100)]
drm/i915/gtt: Tidy up duplicate branches in gen8_gmch_probe()

Following commit f773568b6ff8 ("drm/i915: nuke the duplicated stolen
discovery"), the if-else-chain for determining the GTT size is redundant
with the !chv branches all being the same.

Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
References: f773568b6ff8 ("drm/i915: nuke the duplicated stolen discovery")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503212956.3948-1-chris@chris-wilson.co.uk
6 years agoi915: Convert to use match_string() helper
Andy Shevchenko [Thu, 3 May 2018 18:17:06 +0000 (21:17 +0300)]
i915: Convert to use match_string() helper

The new helper returns index of the matching string in an array.
We are going to use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503181706.22120-1-andriy.shevchenko@linux.intel.com
6 years agodrm/i915/execlists: Drop preemption arbitrations points along the ring
Chris Wilson [Thu, 3 May 2018 19:54:16 +0000 (20:54 +0100)]
drm/i915/execlists: Drop preemption arbitrations points along the ring

Limit the arbitration (where preemption may occur) to inside the batch,
and prevent it from happening on the pipecontrols/flushes we use to
write the breadcrumb seqno. Once the user batch is complete, we have
nothing left to do but serialise and emit the breadcrumb; switching
contexts at this point is futile so don't.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503195416.22498-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Keep one request in our ring_list
Chris Wilson [Thu, 3 May 2018 19:51:15 +0000 (20:51 +0100)]
drm/i915: Keep one request in our ring_list

Don't pre-emptively retire the oldest request in our ring's list if it
is the only request. We keep various bits of state alive using the
active reference from the request and would rather transfer that state
over to a new request rather than the more involved process of retiring
and reacquiring it.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503195115.22309-2-chris@chris-wilson.co.uk
6 years agodrm/i915: Lazily unbind vma on close
Chris Wilson [Thu, 3 May 2018 19:51:14 +0000 (20:51 +0100)]
drm/i915: Lazily unbind vma on close

When userspace is passing around swapbuffers using DRI, we frequently
have to open and close the same object in the foreign address space.
This shows itself as the same object being rebound at roughly 30fps
(with a second object also being rebound at 30fps), which involves us
having to rewrite the page tables and maintain the drm_mm range manager
every time.

However, since the object still exists and it is only the local handle
that disappears, if we are lazy and do not unbind the VMA immediately
when the local user closes the object but defer it until the GPU is
idle, then we can reuse the same VMA binding. We still have to be
careful to mark the handle and lookup tables as closed to maintain the
uABI, just allowing the underlying VMA to be resurrected if the user is
able to access the same object from the same context again.

If the object itself is destroyed (neither userspace keeping a handle to
it), the VMA will be reaped immediately as usual.

In the future, this will be even more useful as instantiating a new VMA
for use on the GPU will become heavier. A nuisance indeed, so nip it in
the bud.

v2: s/__i915_vma_final_close/i915_vma_destroy/ etc.
v3: Leave a hint as to why we deferred the unbind on close.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503195115.22309-1-chris@chris-wilson.co.uk
6 years agodrm/i915/selftests: fix spelling mistake: "parmaters" -> "parameters"
Colin Ian King [Thu, 3 May 2018 15:45:10 +0000 (16:45 +0100)]
drm/i915/selftests: fix spelling mistake: "parmaters" -> "parameters"

Trivial fix to spelling mistake in pr_err error message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503154510.708-1-colin.king@canonical.com
6 years agodrm/i915/icl: Add configuring MOCS in new Icelake engines
Tomasz Lis [Wed, 2 May 2018 22:31:42 +0000 (15:31 -0700)]
drm/i915/icl: Add configuring MOCS in new Icelake engines

In Icelake, there are more engines on which Memory Object Control
States need to be configured. Besides adding Icelake under Skylake
config, the patch makes sure MOCS register addresses for the new
engines are properly defined.

Additional patch might be need later, in case the specification will
propose different MOCS config values for Icelake than in previous
gens.

v2: Restricted comments to gen11, updated description, renamed
defines.

v3: Used proper engine indexes for gen11.

v4: Ensure patch is Icelake only.

v5: Style fixes (proposed by mwajdeczko)

v6 (from Paulo): fix checkpatch's COMMIT_LOG_LONG_LINE (Checkpatch).

BSpec: 19405
BSpec: 21140
Cc: Oscar Mateo Lozano <oscar.mateo@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Tomasz Lis <tomasz.lis@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502223142.3891-1-paulo.r.zanoni@intel.com
6 years agodrm/i915: Correctly populate user mode h/vdisplay with pipe src size during readout
Ville Syrjälä [Thu, 26 Apr 2018 16:30:15 +0000 (19:30 +0300)]
drm/i915: Correctly populate user mode h/vdisplay with pipe src size during readout

During state readout we first read out the pipe src size, store
that information in the user mode h/vdisplay, but later on we overwrite
that with the actual crtc timings. That makes our read out crtc state
inconsistent with itself when the BIOS has enabled the panel fitter to
scale the pipe contents. Let's preserve the pipe src size based
information in the user mode to make things consistent again.

This fixes a problem introduced by commit a2936e3d9a9c ("drm/i915:
Use drm_mode_get_hv_timing() to populate plane clip rectangle")
where the inconsistent state is now leading the plane clipping code
to report a failure on account the plane dst coordinates not matching
the user mode size. Previously we did the plane clipping based on
the pipe src size instead and thus never noticed the inconsistency.

The failure manifests as a WARN:
[    0.762117] [drm:intel_dump_pipe_config [i915]] requested mode:
[    0.762142] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1366x768" 60 72143 1366 1414 1446 1526 768 771 777 784 0x40 0xa
...
[    0.762327] [drm:intel_dump_pipe_config [i915]] port clock: 72143, pipe src size: 1024x768, pixel rate 72143
...
[    0.764666] [drm:drm_atomic_helper_check_plane_state [drm_kms_helper]] Plane must cover entire CRTC
[    0.764690] [drm:drm_rect_debug_print [drm]] dst: 1024x768+0+0
[    0.764711] [drm:drm_rect_debug_print [drm]] clip: 1366x768+0+0
[    0.764713] ------------[ cut here ]------------
[    0.764714] Could not determine valid watermarks for inherited state
[    0.764792] WARNING: CPU: 4 PID: 159 at drivers/gpu/drm/i915/intel_display.c:14584 intel_modeset_init+0x3ce/0x19d0 [i915]
...

Cc: FadeMind <fademind@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-by: FadeMind <fademind@gmail.com>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Tested-by: Dave Jones <davej@codemonkey.org.uk>
References: https://lists.freedesktop.org/archives/intel-gfx/2018-April/163186.html
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105992
Fixes: a2936e3d9a9c ("drm/i915: Use drm_mode_get_hv_timing() to populate plane clip rectangle")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180426163015.14232-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: FadeMind <fademind@gmail.com>
6 years agodrm/i915: Remove redundant check for negative timeout while doing an atomic pipe...
Tarun [Wed, 2 May 2018 23:33:00 +0000 (16:33 -0700)]
drm/i915: Remove redundant check for negative timeout while doing an atomic pipe update

No functional changes, just a minor knit. Stumbled across the kernel doc for
schedule_timeout() which quotes "In all cases the return value is guaranteed
to be non-negative". Also, the return code of schedule_timeout() already checks
for negative values "return timeout < 0 ? 0 : timeout;" and returns 0
in such cases. Furthermore, the msec_to_jiffies returns an ungined long
value. So, let's do away with the redundant check for an atomic
pipe update.

v2: Commit message changes (Manasi).

Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Tarun Vyas <tarun.vyas@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502233300.81220-1-tarun.vyas@intel.com
6 years agodrm/i915: Adjust eDP's logical vco in a reliable place.
Rodrigo Vivi [Wed, 2 May 2018 17:52:55 +0000 (10:52 -0700)]
drm/i915: Adjust eDP's logical vco in a reliable place.

On intel_dp_compute_config() we were calculating the needed vco
for eDP on gen9 and we stashing it in
intel_atomic_state.cdclk.logical.vco

However few moments later on intel_modeset_checks() we fully
replace entire intel_atomic_state.cdclk.logical with
dev_priv->cdclk.logical fully overwriting the logical desired
vco for eDP on gen9.

So, with wrong VCO value we end up with wrong desired cdclk, but
also it will raise a lot of WARNs: On gen9, when we read
CDCLK_CTL to verify if we configured properly the desired
frequency the CD Frequency Select bits [27:26] == 10b can mean
337.5 or 308.57 MHz depending on the VCO. So if we have wrong
VCO value stashed we will believe the frequency selection didn't
stick and start to raise WARNs of cdclk mismatch.

[   42.857519] [drm:intel_dump_cdclk_state [i915]] Changing CDCLK to 308571 kHz, VCO 8640000 kHz, ref 24000 kHz, bypass 24000 kHz, voltage level 0
[   42.897269] cdclk state doesn't match!
[   42.901052] WARNING: CPU: 5 PID: 1116 at drivers/gpu/drm/i915/intel_cdclk.c:2084 intel_set_cdclk+0x5d/0x110 [i915]
[   42.938004] RIP: 0010:intel_set_cdclk+0x5d/0x110 [i915]
[   43.155253] WARNING: CPU: 5 PID: 1116 at drivers/gpu/drm/i915/intel_cdclk.c:2084 intel_set_cdclk+0x5d/0x110 [i915]
[   43.170277] [drm:intel_dump_cdclk_state [i915]] [hw state] 337500 kHz, VCO 8100000 kHz, ref 24000 kHz, bypass 24000 kHz, voltage level 0
[   43.182566] [drm:intel_dump_cdclk_state [i915]] [sw state] 308571 kHz, VCO 8640000 kHz, ref 24000 kHz, bypass 24000 kHz, voltage level 0

v2: Move the entire eDP's vco logical adjustment to inside
    the skl_modeset_calc_cdclk as suggested by Ville.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Fixes: bb0f4aab0e76 ("drm/i915: Track full cdclk state for the logical and actual cdclk frequencies")
Cc: <stable@vger.kernel.org> # v4.12+
Link: https://patchwork.freedesktop.org/patch/msgid/20180502175255.5344-1-rodrigo.vivi@intel.com
6 years agodrm/i915: Mark the hangcheck as idle when unparking the engines
Chris Wilson [Wed, 2 May 2018 22:03:13 +0000 (23:03 +0100)]
drm/i915: Mark the hangcheck as idle when unparking the engines

As we unpark the engines and are about to begin a new cycle of activity,
mark the current status of the hangceck as idle so that we avoid
carrying over a stale timestamp/action into the next cycle.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502220313.6459-2-chris@chris-wilson.co.uk
6 years agodrm/i915: Reset the hangcheck timestamp before repeating a seqno
Chris Wilson [Wed, 2 May 2018 22:03:12 +0000 (23:03 +0100)]
drm/i915: Reset the hangcheck timestamp before repeating a seqno

In the unusual circumstance where we reuse a seqno (for example, in
igt), make sure that we reset the hangcheck timestamp before it sees the
same seqno again.

References: https://bugs.freedesktop.org/show_bug.cgi?id=106215
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502220313.6459-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Silence debugging DRM_ERROR for failing to suspend vlv powerwells
Chris Wilson [Mon, 9 Apr 2018 09:49:05 +0000 (10:49 +0100)]
drm/i915: Silence debugging DRM_ERROR for failing to suspend vlv powerwells

If we try to suspend a wedged device following a GPU reset failure, we
will also fail to turn off the rc6 powerwells (on vlv), leading to a
*ERROR*. This is quite expected in this case, so the best we can do is
shake our heads and reduce the *ERROR* to a debug so CI stops
complaining.

Testcase: igt/gem_eio/in-flight-suspend #vlv
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105583
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180409094905.4516-1-chris@chris-wilson.co.uk
6 years agodrm/i915/execlists: Emit i915_trace_request_out for preemption
Chris Wilson [Wed, 2 May 2018 23:02:02 +0000 (00:02 +0100)]
drm/i915/execlists: Emit i915_trace_request_out for preemption

Move the tracepoint into the common execlists_context_schedule_out() and
call it from preemption completion as well. A small bit of refactoring
code should help with when tracing, or else we end up with requests
mysteriously disappearing and some being emitted to HW multiple times.

Reported-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502230202.6848-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Split i915_gem_timeline into individual timelines
Chris Wilson [Wed, 2 May 2018 16:38:39 +0000 (17:38 +0100)]
drm/i915: Split i915_gem_timeline into individual timelines

We need to move to a more flexible timeline that doesn't assume one
fence context per engine, and so allow for a single timeline to be used
across a combination of engines. This means that preallocating a fence
context per engine is now a hindrance, and so we want to introduce the
singular timeline. From the code perspective, this has the notable
advantage of clearing up a lot of mirky semantics and some clumsy
pointer chasing.

By splitting the timeline up into a single entity rather than an array
of per-engine timelines, we can realise the goal of the previous patch
of tracking the timeline alongside the ring.

v2: Tweak wait_for_idle to stop the compiling thinking that ret may be
uninitialised.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502163839.3248-2-chris@chris-wilson.co.uk
6 years agodrm/i915: Move timeline from GTT to ring
Chris Wilson [Wed, 2 May 2018 16:38:38 +0000 (17:38 +0100)]
drm/i915: Move timeline from GTT to ring

In the future, we want to move a request between engines. To achieve
this, we first realise that we have two timelines in effect here. The
first runs through the GTT is required for ordering vma access, which is
tracked currently by engine. The second is implied by sequential
execution of commands inside the ringbuffer. This timeline is one that
maps to userspace's expectations when submitting requests (i.e. given the
same context, batch A is executed before batch B). As the rings's
timelines map to userspace and the GTT timeline an implementation
detail, move the timeline from the GTT into the ring itself (per-context
in logical-ring-contexts/execlists, or a global per-engine timeline for
the shared ringbuffers in legacy submission.

The two timelines are still assumed to be equivalent at the moment (no
migrating requests between engines yet) and so we can simply move from
one to the other without adding extra ordering.

v2: Reinforce that one isn't allowed to mix the engine execution
timeline with the client timeline from userspace (on the ring).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502163839.3248-1-chris@chris-wilson.co.uk
6 years agodrm/i915/firmware: Correct URL for firmware
Anusha Srivatsa [Mon, 30 Apr 2018 22:59:28 +0000 (15:59 -0700)]
drm/i915/firmware: Correct URL for firmware

Replace 01.org URL with upstream linux-firmware repo URL.
We no longer release firmware to 01.org.
linux-firmware.git is the ultimate place to find
the i915 firmwares.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525129168-529-1-git-send-email-anusha.srivatsa@intel.com
6 years agodrm/i915/guc: Assert we have the doorbell before setting it up
Chris Wilson [Tue, 1 May 2018 07:52:03 +0000 (08:52 +0100)]
drm/i915/guc: Assert we have the doorbell before setting it up

As our early doorbell is split between early allocation and a late setup
after we have a channel to the GuC, it may happen due to a lapse of
programmer judgement that we try to setup an invalid doorbell. Make use
of our has_doorbell() function to check the doorbell does exist for the
client before we try and tell the guc about it. In doing so, we prevent
the compiler from warning about the otherwise unused function in some
configurations.

Reported-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180501075203.12458-1-chris@chris-wilson.co.uk
6 years agodrm/i915: Disable some extra clang warnings
Matthias Kaehlcke [Tue, 1 May 2018 18:24:40 +0000 (11:24 -0700)]
drm/i915: Disable some extra clang warnings

Commit 39bf4de89ff7 ("drm/i915: Add -Wall -Wextra to our build, set
warnings to full") enabled extra warnings for i915 to spot possible
bugs in new code, and then disabled a subset of these warnings to keep
the current code building without warnings (with gcc). Enabling the
extra warnings also enabled some additional clang-only warnings, as a
result building i915 with clang currently is extremely noisy. For now
also disable the clang warnings sign-compare, sometimes-uninitialized,
unneeded-internal-declaration and initializer-overrides. If desired
they can be re-enabled after the code has been fixed.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180501182440.70121-1-mka@chromium.org
6 years agodrm/i915: Show ring->start for the ELSP context/request queue
Chris Wilson [Wed, 2 May 2018 10:41:50 +0000 (11:41 +0100)]
drm/i915: Show ring->start for the ELSP context/request queue

Since the advent of execlists, the HW no longer executes from a single
statically assigned ring, but instead switches to a different ring for
each context (logical ringbuffer contexts as it is called). So a good way
to tally the executing context against what we have queued is by
comparing the RING_START register against our requests. Make it so.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502104150.29874-1-chris@chris-wilson.co.uk
6 years agodrm/i915/selftests: Fix error checking for wait_var_timeout
Chris Wilson [Tue, 17 Apr 2018 17:06:38 +0000 (18:06 +0100)]
drm/i915/selftests: Fix error checking for wait_var_timeout

The old wait_on_atomic_t used a custom callback to perform the
schedule(), which used my return semantics of reporting an error code on
timeout. wait_var_event_timeout() uses the schedule() return semantics
of reporting the remaining jiffies (1 if it timed out with 0 jiffies
remaining!) and 0 on failure. This semantic mismatch lead to us falsely
claiming a time out occurred.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106085
Fixes: d224985a5e31 ("sched/wait, drivers/drm: Convert wait_on_atomic_t() usage to the new wait_var_event() API")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180417170638.20550-1-chris@chris-wilson.co.uk
6 years agodrm/i915: add support for specifying DMC firmware override by module param
Jani Nikula [Tue, 24 Apr 2018 12:20:16 +0000 (15:20 +0300)]
drm/i915: add support for specifying DMC firmware override by module param

Use i915.dmc_firmware_path to override default firmware for the platform
and bypassing version checks.

v2: add missing param struct member declaration (David)

Tested-by: David Weinehall <david.weinehall@linux.intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Acked-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180424122016.2416-1-jani.nikula@intel.com
6 years agoMerge drm/drm-next into drm-intel-next-queued
Jani Nikula [Wed, 2 May 2018 09:20:32 +0000 (12:20 +0300)]
Merge drm/drm-next into drm-intel-next-queued

Need d224985a5e31 ("sched/wait, drivers/drm: Convert wait_on_atomic_t()
usage to the new wait_var_event() API") in dinq to be able to fix
https://bugs.freedesktop.org/show_bug.cgi?id=106085.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
6 years agodrm/i915: Print error state times relative to capture
Mika Kuoppala [Mon, 30 Apr 2018 07:52:59 +0000 (10:52 +0300)]
drm/i915: Print error state times relative to capture

Using plain jiffies in error state output makes the output
time differences relative to the current system time. This
is wrong as it makes output time differences dependent
of when the error state is printed rather than when it is
captured.

Store capture jiffies into error state and use it
when outputting the state to fix time differences output.

v2: use engine timestamp as epoch, output formatting (Chris)
v3: pass epoch to print_engine/request (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180430075259.4476-1-mika.kuoppala@linux.intel.com
6 years agodrm/i915/execlists: Don't trigger preemption if complete
Chris Wilson [Tue, 1 May 2018 12:21:31 +0000 (13:21 +0100)]
drm/i915/execlists: Don't trigger preemption if complete

Due to the latency of the tasklet running from ksoftirqd, by the time we
process the execlist dequeue may be a long time behind the GPU. If the
request was completed when we ran reschedule, we will not have tweaked
its priority, but if it is still listed as being in-flight for dequeue
we will use it as a reference for the rest of the queue, including
requests from its own context which will now be at higher priority. This
can cause us to issue a preempt-to-idle request, even though the request
we want to preempt is already complete.

Reported-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180501122131.19435-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
6 years agodrm/i915/icl: Fix the DP Max Voltage for ICL
Manasi Navare [Wed, 28 Mar 2018 21:58:03 +0000 (14:58 -0700)]
drm/i915/icl: Fix the DP Max Voltage for ICL

On clock recovery this function is called to find out
the max voltage swing level that we could go.

However gen 9 functions use the old buffer translation tables
to figure that out. ICL uses different set of tables for eDP
and DP for both Combo and MG PHY ports. This patch adds the hook
for ICL for getting this information from appropriate buf trans tables.

v5 (from Paulo):
* New rebase after changes to earlier patches.
v4:
* Rebase.
v3:
* Follow the coding conventions here
(https://cgit.freedesktop.org/drm-intel/tree/Documentation/process/codin
g-style.rst#n191) (Paulo)
v2:
* Rebase after patch that adds voltage check inside buf trans
function (Rodrigo)

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180328215803.13835-9-paulo.r.zanoni@intel.com
6 years agodrm/i915/icl: Implement voltage swing programming sequence for Combo PHY DDI
Manasi Navare [Wed, 28 Mar 2018 21:58:02 +0000 (14:58 -0700)]
drm/i915/icl: Implement voltage swing programming sequence for Combo PHY DDI

This is an important part of the DDI initalization as well as
for changing the voltage during DisplayPort link training.

The Voltage swing seqeuence is similar to Cannonlake.
However it has different register definitions and hence
it makes sense to create a separate vswing sequence and
program functions for ICL to leave room for more changes
in case the Bspec changes later and deviates from CNL sequence.

v2:
Use ~TAP3_DISABLE for enbaling that bit (Jani Nikula)

v3:
* Use dw4_scaling column for PORT_TX_DW4 values (Rodrigo)

v4:
* Call it combo_vswing, use switch statement (Paulo)

v5 (from Paulo):
* Fix a typo.
* s/rate < 600000/rate <= 600000/.
* Don't remove blank lines that should be there.

v6:
* Rebased by Rodrigo on top of Cannonlake changes
  where non vswing sequences are not aligned with iboost
  anymore.

v7: Another rebase after an upstream rework.

v8 (from Paulo):
* Adjust the code to the upstream output type changes.
* Squash the patch that moved some functions up.
* Merge both get_combo_buf_trans functions in order to simplify the
  code.
* Change the changelog format.

v9 (from Paulo):
* Use RTERM_SELECT instead of SCALING_MODE_SEL.
* Adjust the output type handling according to how the other platforms
  do it now.

v10 (from Paulo):
* Fix comment left out from v9 changes (Rodrigo).

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: James Ausmus <james.ausmus@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180328215803.13835-8-paulo.r.zanoni@intel.com
6 years agodrm/i915: Only track live rings for retiring
Chris Wilson [Mon, 30 Apr 2018 13:15:03 +0000 (14:15 +0100)]
drm/i915: Only track live rings for retiring

We don't need to track every ring for its lifetime as they are managed
by the contexts/engines. What we do want to track are the live rings so
that we can sporadically clean up requests if userspace falls behind. We
can simply restrict the gt->rings list to being only gt->live_rings.

v2: s/live/active/ for consistency with gt.active_requests

Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180430131503.5375-4-chris@chris-wilson.co.uk
6 years agodrm/i915: Retire requests along rings
Chris Wilson [Mon, 30 Apr 2018 13:15:02 +0000 (14:15 +0100)]
drm/i915: Retire requests along rings

In the next patch, rings are the central timeline as requests may jump
between engines. Therefore in the future as we retire in order along the
engine timeline, we may retire out-of-order within a ring (as the ring now
occurs along multiple engines), leading to much hilarity in miscomputing
the position of ring->head.

As an added bonus, retiring along the ring reduces the penalty of having
one execlists client do cleanup for another (old legacy submission
shares a ring between all clients). The downside is that slow and
irregular (off the critical path) process of cleaning up stale requests
after userspace becomes a modicum less efficient.

In the long run, it will become apparent that the ordered
ring->request_list matches the ring->timeline, a fun challenge for the
future will be unifying the two lists to avoid duplication!

v2: We need both engine-order and ring-order processing to maintain our
knowledge of where individual rings have completed upto as well as
knowing what was last executing on any engine. And finally by decoupling
retiring the contexts on the engine and the timelines along the rings,
we do have to keep a reference to the context on each request
(previously it was guaranteed by the context being pinned).

v3: Not just a reference to the context, but we need to keep it pinned
as we manipulate the rings; i.e. we need a pin for both the manipulation
of the engine state during its retirements, and a separate pin for the
manipulation of the ring state.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180430131503.5375-3-chris@chris-wilson.co.uk
6 years agodrm/i915: Wrap engine->context_pin() and engine->context_unpin()
Chris Wilson [Mon, 30 Apr 2018 13:15:01 +0000 (14:15 +0100)]
drm/i915: Wrap engine->context_pin() and engine->context_unpin()

Make life easier in upcoming patches by moving the context_pin and
context_unpin vfuncs into inline helpers.

v2: Fixup mock_engine to mark the context as pinned on use.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180430131503.5375-2-chris@chris-wilson.co.uk
6 years agodrm/i915: Stop tracking timeline->inflight_seqnos
Chris Wilson [Mon, 30 Apr 2018 13:15:00 +0000 (14:15 +0100)]
drm/i915: Stop tracking timeline->inflight_seqnos

In commit 9b6586ae9f6b ("drm/i915: Keep a global seqno per-engine"), we
moved from a global inflight counter to per-engine counters in the
hope that will be easy to run concurrently in future. However, with the
advent of the desire to move requests between engines, we do need a
global counter to preserve the semantics that no engine wraps in the
middle of a submit. (Although this semantic is now only required for gen7
semaphore support, which only supports greater-then comparisons!)

v2: Keep a global counter of all requests ever submitted and force the
reset when it wraps.

References: 9b6586ae9f6b ("drm/i915: Keep a global seqno per-engine")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180430131503.5375-1-chris@chris-wilson.co.uk
6 years agodrm/i915/lrc: Scrub the GPU state of the guilty hanging request
Chris Wilson [Sat, 28 Apr 2018 11:15:32 +0000 (12:15 +0100)]
drm/i915/lrc: Scrub the GPU state of the guilty hanging request

Previously, we just reset the ring register in the context image such
that we could skip over the broken batch and emit the closing
breadcrumb. However, on resume the context image and GPU state would be
reloaded, which may have been left in an inconsistent state by the
reset. The presumption was that at worst it would just cause another
reset and skip again until it recovered, however it seems just as likely
to cause an unrecoverable hang. Instead of risking loading an incomplete
context image, restore it back to the default state.

v2: Fix up off-by-one from including the ppHSWP in with the register
state.
v3: Use a ring local to compact a few lines.
v4: Beware setting the ring local before checking for a NULL request.

References: https://bugs.freedesktop.org/show_bug.cgi?id=105304
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com> #v2
Link: https://patchwork.freedesktop.org/patch/msgid/20180428111532.15819-1-chris@chris-wilson.co.uk
6 years agoMerge tag 'drm-misc-next-2018-04-26' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Sun, 29 Apr 2018 23:32:34 +0000 (09:32 +1000)]
Merge tag 'drm-misc-next-2018-04-26' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v4.18:

UAPI Changes:
- Add support for a generic plane alpha property to sun4i, rcar-du and atmel-hclcdc. (Maxime)

Core Changes:
- Stop looking at legacy plane->fb and crtc members in atomic drivers. (Ville)
- mode_valid return type fixes. (Luc)
- Handle zpos normalization in the core. (Peter)

Driver Changes:
- Implement CTM, plane alpha and generic async cursor support in vc4. (Stefan)
- Various fixes for HPD and aux chan in drm_bridge/analogix_dp. (Lin, Zain, Douglas)
- Add support for MIPI DSI to sun4i. (Maxime)

Signed-off-by: Dave Airlie <airlied@redhat.com>
# gpg: Signature made Thu 26 Apr 2018 08:21:01 PM AEST
# gpg:                using RSA key FE558C72A67013C3
# gpg: Can't check signature: public key not found
Link: https://patchwork.freedesktop.org/patch/msgid/b33da7eb-efc9-ae6f-6f69-b7acd6df6797@mblankhorst.nl
6 years agoLinux v4.17-rc3 v4.17-rc3
Linus Torvalds [Sun, 29 Apr 2018 21:17:42 +0000 (14:17 -0700)]
Linux v4.17-rc3

6 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 29 Apr 2018 17:06:05 +0000 (10:06 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "Another set of x86 related updates:

   - Fix the long broken x32 version of the IPC user space headers which
     was noticed by Arnd Bergman in course of his ongoing y2038 work.
     GLIBC seems to have non broken private copies of these headers so
     this went unnoticed.

   - Two microcode fixlets which address some more fallout from the
     recent modifications in that area:

      - Unconditionally save the microcode patch, which was only saved
        when CPU_HOTPLUG was enabled causing failures in the late
        loading mechanism

      - Make the later loader synchronization finally work under all
        circumstances. It was exiting early and causing timeout failures
        due to a missing synchronization point.

   - Do not use mwait_play_dead() on AMD systems to prevent excessive
     power consumption as the CPU cannot go into deep power states from
     there.

   - Address an annoying sparse warning due to lost type qualifiers of
     the vmemmap and vmalloc base address constants.

   - Prevent reserving crash kernel region on Xen PV as this leads to
     the wrong perception that crash kernels actually work there which
     is not the case. Xen PV has its own crash mechanism handled by the
     hypervisor.

   - Add missing TLB cpuid values to the table to make the printout on
     certain machines correct.

   - Enumerate the new CLDEMOTE instruction

   - Fix an incorrect SPDX identifier

   - Remove stale macros"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds
  x86/setup: Do not reserve a crash kernel region if booted on Xen PV
  x86/cpu/intel: Add missing TLB cpuid values
  x86/smpboot: Don't use mwait_play_dead() on AMD systems
  x86/mm: Make vmemmap and vmalloc base address constants unsigned long
  x86/vector: Remove the unused macro FPU_IRQ
  x86/vector: Remove the macro VECTOR_OFFSET_START
  x86/cpufeatures: Enumerate cldemote instruction
  x86/microcode: Do not exit early from __reload_late()
  x86/microcode/intel: Save microcode patch unconditionally
  x86/jailhouse: Fix incorrect SPDX identifier

6 years agoMerge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 29 Apr 2018 16:36:22 +0000 (09:36 -0700)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 pti fixes from Thomas Gleixner:
 "A set of updates for the x86/pti related code:

   - Preserve r8-r11 in int $0x80. r8-r11 need to be preserved, but the
     int$80 entry code removed that quite some time ago. Make it correct
     again.

   - A set of fixes for the Global Bit work which went into 4.17 and
     caused a bunch of interesting regressions:

      - Triggering a BUG in the page attribute code due to a missing
        check for early boot stage

      - Warnings in the page attribute code about holes in the kernel
        text mapping which are caused by the freeing of the init code.
        Handle such holes gracefully.

      - Reduce the amount of kernel memory which is set global to the
        actual text and do not incidentally overlap with data.

      - Disable the global bit when RANDSTRUCT is enabled as it
        partially defeats the hardening.

      - Make the page protection setup correct for vma->page_prot
        population again. The adjustment of the protections fell through
        the crack during the Global bit rework and triggers warnings on
        machines which do not support certain features, e.g. NX"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/entry/64/compat: Preserve r8-r11 in int $0x80
  x86/pti: Filter at vma->vm_page_prot population
  x86/pti: Disallow global kernel text with RANDSTRUCT
  x86/pti: Reduce amount of kernel text allowed to be Global
  x86/pti: Fix boot warning from Global-bit setting
  x86/pti: Fix boot problems from Global-bit setting

6 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 29 Apr 2018 16:03:25 +0000 (09:03 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:
 "Two fixes from the timer departement:

   - Fix a long standing issue in the NOHZ tick code which causes RB
     tree corruption, delayed timers and other malfunctions. The cause
     for this is code which modifies the expiry time of an enqueued
     hrtimer.

   - Revert the CLOCK_MONOTONIC/CLOCK_BOOTTIME unification due to
     regression reports. Seems userspace _is_ relying on the documented
     behaviour despite our hope that it wont"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert: Unify CLOCK_MONOTONIC and CLOCK_BOOTTIME
  tick/sched: Do not mess with an enqueued hrtimer

6 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 29 Apr 2018 15:58:50 +0000 (08:58 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "The perf update contains the following bits:

  x86:
   - Prevent setting freeze_on_smi on PerfMon V1 CPUs to avoid #GP

  perf stat:
   - Keep the '/' event modifier separator in fallback, for example when
     fallbacking from 'cpu/cpu-cycles/' to user level only, where it
     should become 'cpu/cpu-cycles/u' and not 'cpu/cpu-cycles/:u' (Jiri
     Olsa)

   - Fix PMU events parsing rule, improving error reporting for invalid
     events (Jiri Olsa)

   - Disable write_backward and other event attributes for !group events
     in a group, fixing, for instance this group: '{cycles,msr/aperf/}:S'
     that has leader sampling (:S) and where just the 'cycles', the
     leader event, should have the write_backward attribute set, in this
     case it all fails because the PMU where 'msr/aperf/' lives doesn't
     accepts write_backward style sampling (Jiri Olsa)

   - Only fall back group read for leader (Kan Liang)

   - Fix core PMU alias list for x86 platform (Kan Liang)

   - Print out hint for mixed PMU group error (Kan Liang)

   - Fix duplicate PMU name for interval print (Kan Liang)

  Core:
   - Set main kernel end address properly when reading kernel and module
     maps (Namhyung Kim)

  perf mem:
   - Fix incorrect entries and add missing man options (Sangwon Hong)

  s/390:
   - Remove s390 specific strcmp_cpuid_cmp function (Thomas Richter)

   - Adapt 'perf test' case record+probe_libc_inet_pton.sh for s390

   - Fix s390 undefined record__auxtrace_init() return value in 'perf
     record' (Thomas Richter)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Don't enable freeze-on-smi for PerfMon V1
  perf stat: Fix duplicate PMU name for interval print
  perf evsel: Only fall back group read for leader
  perf stat: Print out hint for mixed PMU group error
  perf pmu: Fix core PMU alias list for X86 platform
  perf record: Fix s390 undefined record__auxtrace_init() return value
  perf mem: Document incorrect and missing options
  perf evsel: Disable write_backward for leader sampling group events
  perf pmu: Fix pmu events parsing rule
  perf stat: Keep the / modifier separator in fallback
  perf test: Adapt test case record+probe_libc_inet_pton.sh for s390
  perf list: Remove s390 specific strcmp_cpuid_cmp function
  perf machine: Set main kernel end address properly

6 years agoMerge tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
Linus Torvalds [Sun, 29 Apr 2018 03:07:21 +0000 (20:07 -0700)]
Merge tag 'for_linus_stable' of git://git./linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Fix misc bugs and a regression for ext4"

* tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: add MODULE_SOFTDEP to ensure crc32c is included in the initramfs
  ext4: fix bitmap position validation
  ext4: set h_journal if there is a failure starting a reserved handle
  ext4: prevent right-shifting extents beyond EXT_MAX_BLOCKS

6 years ago<linux/stringhash.h>: fix end_name_hash() for 64bit long
Amir Goldstein [Mon, 5 Feb 2018 17:32:18 +0000 (19:32 +0200)]
<linux/stringhash.h>: fix end_name_hash() for 64bit long

The comment claims that this helper will try not to loose bits, but for
64bit long it looses the high bits before hashing 64bit long into 32bit
int.  Use the helper hash_long() to do the right thing for 64bit long.
For 32bit long, there is no change.

All the callers of end_name_hash() either assign the result to
qstr->hash, which is u32 or return the result as an int value (e.g.
full_name_hash()).  Change the helper return type to int to conform to
its users.

[ It took me a while to apply this, because my initial reaction to it
  was - incorrectly - that it could make for slower code.

  After having looked more at it, I take back all my complaints about
  the patch, Amir was right and I was mis-reading things or just being
  stupid.

  I also don't worry too much about the possible performance impact of
  this on 64-bit, since most architectures that actually care about
  performance end up not using this very much (the dcache code is the
  most performance-critical, but the word-at-a-time case uses its own
  hashing anyway).

  So this ends up being mostly used for filesystems that do their own
  degraded hashing (usually because they want a case-insensitive
  comparison function).

  A _tiny_ worry remains, in that not everybody uses DCACHE_WORD_ACCESS,
  and then this potentially makes things more expensive on 64-bit
  architectures with slow or lacking multipliers even for the normal
  case.

  That said, realistically the only such architecture I can think of is
  PA-RISC. Nobody really cares about performance on that, it's more of a
  "look ma, I've got warts^W an odd machine" platform.

  So the patch is fine, and all my initial worries were just misplaced
  from not looking at this properly.   - Linus ]

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMAINTAINERS: add myself as maintainer of AFFS
David Sterba [Sat, 28 Apr 2018 17:05:04 +0000 (19:05 +0200)]
MAINTAINERS: add myself as maintainer of AFFS

The AFFS filesystem is still in use by m68k community (Link #2), but as
there was no code activity and no maintainer, the filesystem appeared on
the list of candidates for staging/removal (Link #1).

I volunteer to act as a maintainer of AFFS to collect any fixes that
might show up and to guard fs/affs/ against another spring cleaning.

Link: https://lkml.kernel.org/r/20180425154602.GA8546@bombadil.infradead.org
Link: https://lkml.kernel.org/r/1613268.lKBQxPXt8J@merkaba
CC: Martin Steigerwald <martin@lichtvoll.de>
CC: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 28 Apr 2018 17:06:16 +0000 (10:06 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:

 - two driver fixes

 - better parameter check for the core

 - Documentation updates

 - part of a tree-wide HAS_DMA cleanup

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: sprd: Fix the i2c count issue
  i2c: sprd: Prevent i2c accesses after suspend is called
  i2c: dev: prevent ZERO_SIZE_PTR deref in i2cdev_ioctl_rdwr()
  Documentation/i2c: adopt kernel commenting style in examples
  Documentation/i2c: sync docs with current state of i2c-tools
  Documentation/i2c: whitespace cleanup
  i2c: Remove depends on HAS_DMA in case of platform dependency

6 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Sat, 28 Apr 2018 17:02:44 +0000 (10:02 -0700)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:

 - crypto API regression that may cause sporadic alloc failures

 - double-free bug in drbg

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: drbg - set freed buffers to NULL
  crypto: api - fix finding algorithm currently being tested

6 years agoMerge tag '4.17-rc2-smb3' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 28 Apr 2018 16:51:56 +0000 (09:51 -0700)]
Merge tag '4.17-rc2-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "A few security related fixes for SMB3, most importantly for SMB3.11
  encryption"

* tag '4.17-rc2-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: smbd: Avoid allocating iov on the stack
  cifs: smbd: Don't use RDMA read/write when signing is used
  SMB311: Fix reconnect
  SMB3: Fix 3.11 encryption to Windows and handle encrypted smb3 tcon
  CIFS: set *resp_buf_type to NO_BUFFER on error

6 years agoMerge tag 'powerpc-4.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 28 Apr 2018 16:45:34 +0000 (09:45 -0700)]
Merge tag 'powerpc-4.17-4' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "A bunch of fixes, mostly for existing code and going to stable.

  Our memory hot-unplug path wasn't flushing the cache before removing
  memory. That is a problem now that we are doing memory hotplug on bare
  metal.

  Three fixes for the NPU code that supports devices connected via
  NVLink (ie. GPUs). The main one tweaks the TLB flush algorithm to
  avoid soft lockups for large flushes.

  A fix for our memory error handling where we would loop infinitely,
  returning back to the bad access and hard lockup the CPU.

  Fixes for the OPAL RTC driver, which wasn't handling some error cases
  correctly.

  A fix for a hardlockup in the powernv cpufreq driver.

  And finally two fixes to our smp_send_stop(), required due to a recent
  change to use it on shutdown.

  Thanks to: Alistair Popple, Balbir Singh, Laurentiu Tudor, Mahesh
  Salgaonkar, Mark Hairgrove, Nicholas Piggin, Rashmica Gupta, Shilpasri
  G Bhat"

* tag 'powerpc-4.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/kvm/booke: Fix altivec related build break
  powerpc: Fix deadlock with multiple calls to smp_send_stop
  cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt
  powerpc: Fix smp_send_stop NMI IPI handling
  rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops
  powerpc/mce: Fix a bug where mce loops on memory UE.
  powerpc/powernv/npu: Do a PID GPU TLB flush when invalidating a large address range
  powerpc/powernv/npu: Prevent overwriting of pnv_npu2_init_contex() callback parameters
  powerpc/powernv/npu: Add lock to prevent race in concurrent context init/destroy
  powerpc/powernv/memtrace: Let the arch hotunplug code flush cache
  powerpc/mm: Flush cache on memory hot(un)plug

6 years agodrm/i915/icl: add definitions for the ICL PLL registers
Paulo Zanoni [Wed, 28 Mar 2018 21:57:57 +0000 (14:57 -0700)]
drm/i915/icl: add definitions for the ICL PLL registers

There's a lot of code for the PLL enabling, so let's first only
introduce the register definitions in order to make patch reviewing a
little easier.

v2: Coding style (Jani).
v3: Preparation for upstreaming.
v4: Fix MG_CLKTOP2_CORECLKCTL1 address and random typos (James).

Cc: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: James Ausmus <james.ausmus@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180328215803.13835-3-paulo.r.zanoni@intel.com
6 years agodrm/i915/icl: update ddb entry start/end mask during hw ddb readout
Mahesh Kumar [Thu, 26 Apr 2018 14:25:17 +0000 (19:55 +0530)]
drm/i915/icl: update ddb entry start/end mask during hw ddb readout

Gen11/ICL onward ddb entry start/end mask is increased from 10 bits to
11 bits. This patch make changes to use proper mask for ICL+ during
hardware ddb value readout.

Changes since V1:
 - Use _MASK & _SHIFT macro (James)
Changes since V2:
 - use kernel type u8 instead of uint8_t
Changes since V3:
 - Rebase

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180426142517.16643-4-mahesh1.kumar@intel.com
6 years agodrm/i915/icl: Enable 2nd DBuf slice only when needed
Mahesh Kumar [Thu, 26 Apr 2018 14:25:16 +0000 (19:55 +0530)]
drm/i915/icl: Enable 2nd DBuf slice only when needed

ICL has two slices of DBuf, each slice of size 1024 blocks.
We should not always enable slice-2. It should be enabled only if
display total required BW is > 12GBps OR more than 1 pipes are enabled.

Changes since V1:
 - typecast total_data_rate to u64 before multiplication to solve any
   possible overflow (Rodrigo)
 - fix where skl_wm_get_hw_state was memsetting ddb, resulting
   enabled_slices to become zero
 - Fix the logic of calculating ddb_size
Changes since V2:
 - If no-crtc is part of commit required_slices will have value "0",
   don't try to disable DBuf slice.
Changes since V3:
 - Create a generic helper to enable/disable slice
 - don't return early if total_data_rate is 0, it may be cursor only
   commit, or atomic modeset without any plane.
Changes since V4:
 - Solve checkpatch warnings
 - use kernel types u8/u64 instead of uint8_t/uint64_t
Changes since V5:
 - Rebase

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180426142517.16643-3-mahesh1.kumar@intel.com
6 years agodrm/i915/icl: track dbuf slice-2 status
Mahesh Kumar [Thu, 26 Apr 2018 14:25:15 +0000 (19:55 +0530)]
drm/i915/icl: track dbuf slice-2 status

This patch adds support to start tracking status of DBUF slices.
This is foundation to introduce support for enabling/disabling second
DBUF slice dynamically for ICL.

Changes Since V1:
 - use kernel type u8 over uint8_t

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Reviewed-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180426142517.16643-2-mahesh1.kumar@intel.com
6 years agorMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 27 Apr 2018 23:13:31 +0000 (16:13 -0700)]
rMerge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "ARM:
   - PSCI selection API, a leftover from 4.16 (for stable)
   - Kick vcpu on active interrupt affinity change
   - Plug a VMID allocation race on oversubscribed systems
   - Silence debug messages
   - Update Christoffer's email address (linaro -> arm)

  x86:
   - Expose userspace-relevant bits of a newly added feature
   - Fix TLB flushing on VMX with VPID, but without EPT"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  x86/headers/UAPI: Move DISABLE_EXITS KVM capability bits to the UAPI
  kvm: apic: Flush TLB after APIC mode/address change if VPIDs are in use
  arm/arm64: KVM: Add PSCI version selection API
  KVM: arm/arm64: vgic: Kick new VCPU on interrupt migration
  arm64: KVM: Demote SVE and LORegion warnings to debug only
  MAINTAINERS: Update e-mail address for Christoffer Dall
  KVM: arm/arm64: Close VMID generation race

6 years agodrm/i915/icl: Don't set pipe CSC/Gamma in PLANE_COLOR_CTL
James Ausmus [Wed, 28 Mar 2018 21:57:56 +0000 (14:57 -0700)]
drm/i915/icl: Don't set pipe CSC/Gamma in PLANE_COLOR_CTL

These fields have been deprecated and moved in ICL+. Stop setting the
bits.

They have moved to GAMMA_MODE and CSC_MODE, respectively. This patch
is just to stop incorrectly setting bits in PLANE_COLOR_CTL while
we're waiting for the new replacement functionality to be done.

v2: Drop useless comment, and change !(GEN >= 11) to (GEN < 11). (Ville)

v3: No changes

v4 (from Paulo): Rebase.

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180328215803.13835-2-paulo.r.zanoni@intel.com
6 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 27 Apr 2018 18:14:25 +0000 (11:14 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Nothing too bad, but the spectre updates to smatch identified a few
  places that may need sanitising so we've got those covered.

  Details:

   - Close some potential spectre-v1 vulnerabilities found by smatch

   - Add missing list sentinel for CPUs that don't require KPTI

   - Removal of unused 'addr' parameter for I/D cache coherency

   - Removal of redundant set_fs(KERNEL_DS) calls in ptrace

   - Fix single-stepping state machine handling in response to kernel
     traps

   - Clang support for 128-bit integers

   - Avoid instrumenting our out-of-line atomics in preparation for
     enabling LSE atomics by default in 4.18"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: avoid instrumenting atomic_ll_sc.o
  KVM: arm/arm64: vgic: fix possible spectre-v1 in vgic_mmio_read_apr()
  KVM: arm/arm64: vgic: fix possible spectre-v1 in vgic_get_irq()
  arm64: fix possible spectre-v1 in ptrace_hbp_get_event()
  arm64: support __int128 with clang
  arm64: only advance singlestep for user instruction traps
  arm64/kernel: rename module_emit_adrp_veneer->module_emit_veneer_for_adrp
  arm64: ptrace: remove addr_limit manipulation
  arm64: mm: drop addr parameter from sync icache and dcache
  arm64: add sentinel to kpti_safe_list

6 years agoMerge tag 'modules-for-v4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 27 Apr 2018 18:01:21 +0000 (11:01 -0700)]
Merge tag 'modules-for-v4.17-rc3' of git://git./linux/kernel/git/jeyu/linux

Pull modules fix from Jessica Yu:
 "Fix display of module section addresses in sysfs, which were getting
  hashed with %pK and breaking tools like perf"

* tag 'modules-for-v4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: Fix display of wrong module .text address

6 years agoMerge tag 'ceph-for-4.17-rc3' of git://github.com/ceph/ceph-client
Linus Torvalds [Fri, 27 Apr 2018 17:56:29 +0000 (10:56 -0700)]
Merge tag 'ceph-for-4.17-rc3' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "A CephFS quota follow-up and fixes for two older issues in the
  messenger layer, marked for stable"

* tag 'ceph-for-4.17-rc3' of git://github.com/ceph/ceph-client:
  libceph: validate con->state at the top of try_write()
  libceph: reschedule a tick in finish_hunting()
  libceph: un-backoff on tick when we have a authenticated session
  ceph: check if mds create snaprealm when setting quota

6 years agoMerge tag 'char-misc-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Fri, 27 Apr 2018 17:39:38 +0000 (10:39 -0700)]
Merge tag 'char-misc-4.17-rc3' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small char and misc driver fixes for 4.17-rc3

  A variety of small things that have fallen out after 4.17-rc1 was out.
  Some vboxguest fixes for systems with lots of memory, amba bus fixes,
  some MAINTAINERS updates, uio_hv_generic driver fixes, and a few other
  minor things that resolve problems that people reported.

  The amba bus fixes took twice to get right, the first time I messed up
  applying the patches in the wrong order, hence the revert and later
  addition again with the correct fix, sorry about that.

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  ARM: amba: Fix race condition with driver_override
  ARM: amba: Make driver_override output consistent with other buses
  Revert "ARM: amba: Fix race condition with driver_override"
  ARM: amba: Don't read past the end of sysfs "driver_override" buffer
  ARM: amba: Fix race condition with driver_override
  virt: vbox: Log an error when we fail to get the host version
  virt: vbox: Use __get_free_pages instead of kmalloc for DMA32 memory
  virt: vbox: Add vbg_req_free() helper function
  virt: vbox: Move declarations of vboxguest private functions to private header
  slimbus: Fix out-of-bounds access in slim_slicesize()
  MAINTAINERS: add dri-devel&linaro-mm for Android ION
  fpga-manager: altera-ps-spi: preserve nCONFIG state
  MAINTAINERS: update my email address
  uio_hv_generic: fix subchannel ring mmap
  uio_hv_generic: use correct channel in isr
  uio_hv_generic: make ring buffer attribute for primary channel
  uio_hv_generic: set size of ring buffer attribute
  ANDROID: binder: prevent transactions into own process.

6 years agoMerge tag 'driver-core-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 27 Apr 2018 17:12:20 +0000 (10:12 -0700)]
Merge tag 'driver-core-4.17-rc3' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg Kroah-Hartman:
 "Here are some small driver core and firmware fixes for 4.17-rc3

  There's a kobject WARN() removal to make syzkaller a lot happier about
  some "normal" error paths that it keeps hitting, which should reduce
  the number of false-positives we have been getting recently.

  There's also some fimware test and documentation fixes, and the
  coredump() function signature change that needed to happen after -rc1
  before drivers started to take advantage of it.

  All of these have been in linux-next with no reported issues"

* tag 'driver-core-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  firmware: some documentation fixes
  selftests:firmware: fixes a call to a wrong function name
  kobject: don't use WARN for registration failures
  firmware: Fix firmware documentation for recent file renames
  test_firmware: fix setting old custom fw path back on exit, second try
  test_firmware: Install all scripts
  drivers: change struct device_driver::coredump() return type to void

6 years agoMerge tag 'tty-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Fri, 27 Apr 2018 17:03:38 +0000 (10:03 -0700)]
Merge tag 'tty-4.17-rc3' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some tty and serial driver fixes for reported issues for
  4.17-rc3.

  Nothing major, but a number of small things:

   - device tree fixes/updates for serial ports

   - earlycon fixes

   - n_gsm fixes

   - tty core change reverted to help resolve syszkaller reports

   - other serial driver small fixes

  All of these have been in linux-next with no reported issues"

* tag 'tty-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: Use __GFP_NOFAIL for tty_ldisc_get()
  tty: serial: xuartps: Setup early console when uartclk is also passed
  tty: Don't call panic() at tty_ldisc_init()
  tty: Avoid possible error pointer dereference at tty_ldisc_restore().
  dt-bindings: mvebu-uart: DT fix s/interrupts-names/interrupt-names/
  tty: serial: qcom_geni_serial: Use signed variable to get IRQ
  earlycon: Use a pointer table to fix __earlycon_table stride
  serial: sh-sci: Document r8a77470 bindings
  dt-bindings: meson-uart: DT fix s/clocks-names/clock-names/
  serial: imx: fix cached UCR2 read on software reset
  serial: imx: warn user when using unsupported configuration
  serial: mvebu-uart: Fix local flags handling on termios update
  tty: n_gsm: Fix DLCI handling for ADM mode if debug & 2 is not set
  tty: n_gsm: Fix long delays with control frame timeouts in ADM mode

6 years agox86/headers/UAPI: Move DISABLE_EXITS KVM capability bits to the UAPI
KarimAllah Ahmed [Tue, 17 Apr 2018 04:43:58 +0000 (06:43 +0200)]
x86/headers/UAPI: Move DISABLE_EXITS KVM capability bits to the UAPI

Move DISABLE_EXITS KVM capability bits to the UAPI just like the rest of
capabilities.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: x86@kernel.org
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
6 years agoMerge tag 'staging-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 27 Apr 2018 16:37:12 +0000 (09:37 -0700)]
Merge tag 'staging-4.17-rc3' of git://git./linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are two staging driver fixups for 4.17-rc3.

  The first is the remaining stragglers of the irda code removal that
  you pointed out during the merge window. The second is a fix for the
  wilc1000 driver due to a patch that got merged in 4.17-rc1.

  Both of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: wilc1000: fix NULL pointer exception in host_int_parse_assoc_resp_info()
  staging: irda: remove remaining remants of irda code removal

6 years agoMerge tag 'usb-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Fri, 27 Apr 2018 16:32:20 +0000 (09:32 -0700)]
Merge tag 'usb-4.17-rc3' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of USB driver fixes for reported problems for
  4.17-rc3.

  The "largest" here is a number of phy core changes for reported
  problems with the -rc1 release. There's also the usual musb and xhci
  fixes, as well as new device id updates. There are also some usbip
  fixes for reported problems as more people start to use that code with
  containers.

  All of these have been in linux-next with no reported issues, except
  the last few new device ids, which are "obviously correct" :)"

* tag 'usb-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
  USB: musb: dsps: drop duplicate phy initialisation
  USB: musb: host: prevent core phy initialisation
  usb: core: phy: add the SPDX-License-Identifier and include guard
  xhci: Fix Kernel oops in xhci dbgtty
  usb: select USB_COMMON for usb role switch config
  usb: core: phy: add missing forward declaration for "struct device"
  usb: core: phy: make it a no-op if CONFIG_GENERIC_PHY is disabled
  usb: core: use phy_exit during suspend if wake up is not supported
  usb: core: split usb_phy_roothub_{init,alloc}
  usb: core: phy: fix return value of usb_phy_roothub_exit()
  usb: typec: ucsi: Increase command completion timeout value
  Revert "xhci: plat: Register shutdown for xhci_plat"
  usb: core: Add quirk for HP v222w 16GB Mini
  Documentation: typec.rst: Use literal-block element with ascii art
  usb: typec: ucsi: fix tracepoint related build error
  usbip: usbip_event: fix to not print kernel pointer address
  usbip: usbip_host: fix to hold parent lock for device_attach() calls
  usbip: vhci_hcd: Fix usb device and sockfd leaks
  usbip: vhci_hcd: check rhport before using in vhci_hub_control()
  USB: Increment wakeup count on remote wakeup.
  ...

6 years agoMerge tag 'sound-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 27 Apr 2018 16:29:18 +0000 (09:29 -0700)]
Merge tag 'sound-4.17-rc3' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A significant amount of fixes have been piled up at this time.

   - Possible Spectre v1 coverage in OSS sequencer API, control API,
     HD-audio hwdep ioctl, ASIHPI hwdep ioctl, OPL3, and HDSPM/RME
     channel_info API.

   - A regression fix in PCM delay reporting that happened at the code
     refactoring for the set_fs() removal

   - The long-standing bug in PCM sync_ptr ioctl that missed the audio
     timestamp field

   - USB-audio regression fixes due to the recent UAC2 jack support

   - vm_fault_t conversions in a couple of places

   - ASoC topology API fixes

   - Assorted driver fixes:
      * ASoC rsnd, FSL, Intel SST, DMIC, AMD, ADAU17x1, Realtek codec
      * FireWire typo fix
      * HD-audio quirks and USB-audio Dell fixup
      * USB-audio UAC3 corrections"

* tag 'sound-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (35 commits)
  ALSA: dice: fix error path to destroy initialized stream data
  ALSA: hda - Skip jack and others for non-existing PCM streams
  ALSA: hda/realtek - change the location for one of two front mics
  ALSA: rme9652: Hardening for potential Spectre v1
  ALSA: hdspm: Hardening for potential Spectre v1
  ALSA: asihpi: Hardening for potential Spectre v1
  ALSA: opl3: Hardening for potential Spectre v1
  ALSA: hda: Hardening for potential Spectre v1
  ALSA: control: Hardening for potential Spectre v1
  ALSA: seq: oss: Hardening for potential Spectre v1
  ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device
  ALSA: hda/realtek - Update ALC255 depop optimize
  ALSA: hda/realtek - Add some fixes for ALC233
  ALSA: pcm: Change return type to vm_fault_t
  ALSA: usx2y: Change return type to vm_fault_t
  ALSA: usb-audio: ADC3: Fix channel mapping conversion for ADC3.
  ALSA: dice: fix OUI for TC group
  ALSA: usb-audio: Skip broken EU on Dell dock USB-audio
  ALSA: usb-audio: Fix missing endian conversion
  ALSA: usb-audio: Fix forgotten conversion of control query functions
  ...

6 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Fri, 27 Apr 2018 16:22:06 +0000 (09:22 -0700)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This round of fixes has two larger changes that came in last week:

   - a couple of patches all intended to finally turn on USB support on
     various Amlogic SoC based boards. The respective driver were not
     finalized until very late before the merge window and the DT
     portion is the last bit now.

   - a defconfig update for gemini that had repeatedly missed the cut
     but that is required to actually boot any real machines with the
     default build.

  The rest are the usual small changes:

   - a fix for a nasty build regression on the OMAP memory drivers

   - a fix for a boot problem on Intel/Altera SocFPGA

   - a MAINTAINER file update

   - a couple of fixes for issues found by automated testing (kernelci,
     coverity, sparse, ...)

   - a few incorrect DT entries are updated to match the hardware"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: defconfig: Update Gemini defconfig
  ARM: s3c24xx: jive: Fix some GPIO names
  HISI LPC: Add Kconfig MFD_CORE dependency
  ARM: dts: Fix NAS4220B pin config
  MAINTAINERS: Remove myself as maintainer
  arm64: dts: correct SATA addresses for Stingray
  ARM64: dts: meson-gxm-khadas-vim2: enable the USB controller
  ARM64: dts: meson-gxl-nexbox-a95x: enable the USB controller
  ARM64: dts: meson-gxl-s905x-libretech-cc: enable the USB controller
  ARM64: dts: meson-gx-p23x-q20x: enable the USB controller
  ARM64: dts: meson-gxl-s905x-p212: enable the USB controller
  ARM64: dts: meson-gxm: add GXM specific USB host configuration
  ARM64: dts: meson-gxl: add USB host support
  ARM: OMAP2+: Fix build when using split object directories
  soc: bcm2835: Make !RASPBERRYPI_FIRMWARE dummies return failure
  soc: bcm: raspberrypi-power: Fix use of __packed
  ARM: dts: Fix cm2 and prm sizes for omap4
  ARM: socfpga_defconfig: Remove QSPI Sector 4K size force
  firmware: arm_scmi: remove redundant null check on array
  arm64: dts: juno: drop unnecessary address-cells and size-cells properties

6 years agoMerge tag 'mtd/fixes-for-4.17-rc3' of git://git.infradead.org/linux-mtd
Linus Torvalds [Fri, 27 Apr 2018 16:15:06 +0000 (09:15 -0700)]
Merge tag 'mtd/fixes-for-4.17-rc3' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Boris Brezillon:

 - Fix nanddev_mtd_erase() function to match the changes done in
   e7bfb3fdbde3 ("mtd: Stop updating erase_info->state and calling
   mtd_erase_callback()")

 - Fix a memory leak in the Tango NAND controller driver

 - Fix read/write to a suspended erase block in the CFI driver

 - Fix the DT parsing logic in the Marvell NAND controller driver

* tag 'mtd/fixes-for-4.17-rc3' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: marvell: fix the chip-select DT parsing logic
  mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.
  mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug.
  mtd: cfi: cmdset_0001: Do not allow read/write to suspend erase block.
  mtd: spi-nor: cadence-quadspi: Fix page fault kernel panic
  mtd: nand: Fix nanddev_mtd_erase()
  mtd: rawnand: tango: Fix struct clk memory leak

6 years agoMerge tag 'drm-fixes-for-v4.17-rc3' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 27 Apr 2018 16:06:22 +0000 (09:06 -0700)]
Merge tag 'drm-fixes-for-v4.17-rc3' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Pretty run of the mill for this stage in the cycle: msm, i915, amdgpu,
  qxl, virtio-gpu, sun4i fixes.

  i915:
   - Black screen fixes
   - Display w/a fix
   - HDA codec interop fix

  sun4i:
   - tbsa711 tablet regression fix

  qxl:
   - Regression fixes due to changes in TTM

  virtio:
   - Fix wait event condition

  msm:
   - DSI display fixes

  amdgpu:
   - fix hang on Carrizo
   - DP MST hang fixes
   - irq handling deadlock in DC.

  amdkfd:
   - Fix Kconfig issue
   - Clock retrieval fix
   - Sparse fixes"

* tag 'drm-fixes-for-v4.17-rc3' of git://people.freedesktop.org/~airlied/linux: (27 commits)
  drm/edid: Reset more of the display info
  drm/virtio: fix vq wait_event condition
  qxl: keep separate release_bo pointer
  qxl: fix qxl_release_{map,unmap}
  Revert "drm/sun4i: add lvds mode_valid function"
  drm/amd/display: Check dc_sink every time in MST hotplug
  drm/amd/display: Update MST edid property every time
  drm/amd/display: Don't read EDID in atomic_check
  drm/amd/display: Disallow enabling CRTC without primary plane with FB
  drm/amd/display: Fix deadlock when flushing irq
  drm/i915/fbdev: Enable late fbdev initial configuration
  drm/i915: Use ktime on wait_for
  drm/amdgpu: set COMPUTE_PGM_RSRC1 for SGPR/VGPR clearing shaders
  drm/amdkfd: fix build, select MMU_NOTIFIER
  drm/amdkfd: fix clock counter retrieval for node without GPU
  drm/amdkfd: Fix the error return code in kfd_ioctl_unmap_memory_from_gpu()
  drm/amdkfd: kfd_dev_is_large_bar() can be static
  drm/i915: Enable display WA#1183 from its correct spot
  drm/i915/audio: set minimum CD clock to twice the BCLK
  drm/msm: don't deref error pointer in the msm_fbdev_create error path
  ...

6 years agokvm: apic: Flush TLB after APIC mode/address change if VPIDs are in use
Junaid Shahid [Thu, 26 Apr 2018 20:09:50 +0000 (13:09 -0700)]
kvm: apic: Flush TLB after APIC mode/address change if VPIDs are in use

Currently, KVM flushes the TLB after a change to the APIC access page
address or the APIC mode when EPT mode is enabled. However, even in
shadow paging mode, a TLB flush is needed if VPIDs are being used, as
specified in the Intel SDM Section 29.4.5.

So replace vmx_flush_tlb_ept_only() with vmx_flush_tlb(), which will
flush if either EPT or VPIDs are in use.

Signed-off-by: Junaid Shahid <junaids@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
6 years agox86/entry/64/compat: Preserve r8-r11 in int $0x80
Andy Lutomirski [Tue, 17 Apr 2018 14:36:36 +0000 (07:36 -0700)]
x86/entry/64/compat: Preserve r8-r11 in int $0x80

32-bit user code that uses int $80 doesn't care about r8-r11.  There is,
however, some 64-bit user code that intentionally uses int $0x80 to invoke
32-bit system calls.  From what I've seen, basically all such code assumes
that r8-r15 are all preserved, but the kernel clobbers r8-r11.  Since I
doubt that there's any code that depends on int $0x80 zeroing r8-r11,
change the kernel to preserve them.

I suspect that very little user code is broken by the old clobber, since
r8-r11 are only rarely allocated by gcc, and they're clobbered by function
calls, so they only way we'd see a problem is if the same function that
invokes int $0x80 also spills something important to one of these
registers.

The current behavior seems to date back to the historical commit
"[PATCH] x86-64 merge for 2.6.4".  Before that, all regs were
preserved.  I can't find any explanation of why this change was made.

Update the test_syscall_vdso_32 testcase as well to verify the new
behavior, and it strengthens the test to make sure that the kernel doesn't
accidentally permute r8..r15.

Suggested-by: Denys Vlasenko <dvlasenk@redhat.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Link: https://lkml.kernel.org/r/d4c4d9985fbe64f8c9e19291886453914b48caee.1523975710.git.luto@kernel.org
6 years agox86/ipc: Fix x32 version of shmid64_ds and msqid64_ds
Arnd Bergmann [Tue, 24 Apr 2018 21:19:51 +0000 (23:19 +0200)]
x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds

A bugfix broke the x32 shmid64_ds and msqid64_ds data structure layout
(as seen from user space)  a few years ago: Originally, __BITS_PER_LONG
was defined as 64 on x32, so we did not have padding after the 64-bit
__kernel_time_t fields, After __BITS_PER_LONG got changed to 32,
applications would observe extra padding.

In other parts of the uapi headers we seem to have a mix of those
expecting either 32 or 64 on x32 applications, so we can't easily revert
the path that broke these two structures.

Instead, this patch decouples x32 from the other architectures and moves
it back into arch specific headers, partially reverting the even older
commit 73a2d096fdf2 ("x86: remove all now-duplicate header files").

It's not clear whether this ever made any difference, since at least
glibc carries its own (correct) copy of both of these header files,
so possibly no application has ever observed the definitions here.

Based on a suggestion from H.J. Lu, I tried out the tool from
https://github.com/hjl-tools/linux-header to find other such
bugs, which pointed out the same bug in statfs(), which also has
a separate (correct) copy in glibc.

Fixes: f4b4aae18288 ("x86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H . J . Lu" <hjl.tools@gmail.com>
Cc: Jeffrey Walton <noloader@gmail.com>
Cc: stable@vger.kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180424212013.3967461-1-arnd@arndb.de
6 years agox86/setup: Do not reserve a crash kernel region if booted on Xen PV
Petr Tesarik [Wed, 25 Apr 2018 10:08:35 +0000 (12:08 +0200)]
x86/setup: Do not reserve a crash kernel region if booted on Xen PV

Xen PV domains cannot shut down and start a crash kernel. Instead,
the crashing kernel makes a SCHEDOP_shutdown hypercall with the
reason code SHUTDOWN_crash, cf. xen_crash_shutdown() machine op in
arch/x86/xen/enlighten_pv.c.

A crash kernel reservation is merely a waste of RAM in this case. It
may also confuse users of kexec_load(2) and/or kexec_file_load(2).
When flags include KEXEC_ON_CRASH or KEXEC_FILE_ON_CRASH,
respectively, these syscalls return success, which is technically
correct, but the crash kexec image will never be actually used.

Signed-off-by: Petr Tesarik <ptesarik@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: xen-devel@lists.xenproject.org
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jean Delvare <jdelvare@suse.de>
Link: https://lkml.kernel.org/r/20180425120835.23cef60c@ezekiel.suse.cz
6 years agoi2c: sprd: Fix the i2c count issue
Baolin Wang [Mon, 9 Apr 2018 06:40:55 +0000 (14:40 +0800)]
i2c: sprd: Fix the i2c count issue

We found the I2C controller count register is unreliable sometimes,
that will cause I2C to lose data. Thus we can read the data count
from 'i2c_dev->count' instead of the I2C controller count register.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
6 years agoi2c: sprd: Prevent i2c accesses after suspend is called
Baolin Wang [Mon, 9 Apr 2018 06:40:54 +0000 (14:40 +0800)]
i2c: sprd: Prevent i2c accesses after suspend is called

Add one flag to indicate if the i2c controller has been in suspend state,
which can prevent i2c accesses after i2c controller is suspended following
system suspend.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>