Commit Graph

506942 Commits

Author SHA1 Message Date
Ville Syrjälä
d2182a6608 drm/i915: Don't register HDMI connectors for eDP ports on VLV/CHV
If we determine that a specific port is eDP, don't register the HDMI
connector/encoder for it. The reason being that we want to disable
HPD interrupts for eDP ports when the display is off, but the presence
of the extra HDMI connector would demand the HPD interrupt to remain
enabled all the time.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-13 00:45:31 +01:00
Ville Syrjälä
778eb3344e drm/i915: Remove I915_HAS_HOTPLUG() check from i915_hpd_irq_setup()
The dev_priv->display.hpd_irq_setup hook is optional, so we can move the
I915_HAS_HOTPLUG() check out of i915_hpd_irq_setup() and only set up the
hook when hotplug support is present.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-13 00:45:07 +01:00
Ville Syrjälä
7c7e10db46 drm/i915: Make hpd arrays big enough to avoid out of bounds access
intel_hpd_irq_handler() walks the passed in hpd[] array assuming it
contains HPD_NUM_PINS elements. Currently that's not true as we don't
specify an explicit size for the arrays when initializing them. Avoid
the out of bounds accesses by specifying the size for the arrays.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-13 00:44:38 +01:00
Rodrigo Vivi
e85a5c7989 Revert "drm/i915/chv: Use timeout mode for RC6 on chv"
This reverts commit 5a0afd4b78.

Although timeout mode allows higher residency it impact badly on performance.
I believe while we don't have a way to balance between performance and
power savings at runtime I believe we have to revert and prioritize
performance that was impacted a lot.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88103
Cc: Deepak S <deepak.s@linux.intel.com>
Cc: Wendy Wang <wendy.wang@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-13 00:31:55 +01:00
Kenneth Graunke
d60de81da4 drm/i915: Improve HiZ throughput on Cherryview.
Found by reading the HIZ_CHICKEN documentation.

Improves performance in a HiZ microbenchmark by around 50%.
Improves performance in OglZBuffer by around 18%.

Thanks to Chris Wilson for helping me figure out where to put this.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-13 00:16:53 +01:00
Thomas Daniel
c0a03a2e4c drm/i915: Reset CSB read pointer in ring init
A previous commit enabled execlists by default:

       commit 27401d126b ("drm/i915/bdw: Enable execlists by default where supported")

This allowed routine testing of execlists which exposed a regression when
resuming from suspend.  The cause was tracked down the to recent changes to the
ring init sequence:

       commit 35a57ffbb1 ("drm/i915: Only init engines once")

During a suspend/resume cycle the hardware Context Status Buffer write pointer
is reset.  However since the recent changes to the init sequence the software CSB
read pointer is no longer reset.  This means that context status events are not
handled correctly and new contexts are not written to the ELSP, resulting in an
apparent GPU hang.

Pending further changes to the ring init code, just move the
ring->next_context_status_buffer initialization into gen8_init_common_ring to
fix this regression.

v2: Moved init into gen8_init_common_ring rather than context_enable after
feedback from Daniel Vetter.  Updated commit msg to reflect this and also cite
commits related to the regression.  Fixed bz link to correct bug.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88096
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Gordon <david.s.gordon@intel.com>
Signed-off-by: Thomas Daniel <thomas.daniel@intel.com>
Reviewed-by: Dave Gordon <david.s.gordon@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-13 00:11:52 +01:00
Matt Roper
53a366b9f3 drm/i915: Drop unused position fields (v2)
The userspace-requested plane coordinates are now always available via
plane->state.base (and the i915-adjusted values are stored in
plane->state), so we no longer use the coordinate fields in intel_plane
and can drop them.

Also, note that the error case for pageflip calls update_plane() to
program the values from plane->state; it's simpler to just call
intel_plane_restore() which does the same thing.

v2: Replace manual update_plane() with intel_plane_restore() in pageflip
    error handler.

Reviewed-by(v1): Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-12 23:59:41 +01:00
Matt Roper
ea2c67bb4a drm/i915: Move to atomic plane helpers (v9)
Switch plane handling to use the atomic plane helpers.  This means that
rather than provide our own implementations of .update_plane() and
.disable_plane(), we expose the lower-level check/prepare/commit/cleanup
entrypoints and let the DRM core implement update/disable for us using
those entrypoints.

The other main change that falls out of this patch is that our
drm_plane's will now always have a valid plane->state that contains the
relevant plane state (initial state is allocated at plane creation).
The base drm_plane_state pointed to holds the requested source/dest
coordinates, and the subclassed intel_plane_state holds the adjusted
values that our driver actually uses.

v2:
 - Renamed file from intel_atomic.c to intel_atomic_plane.c (Daniel)
 - Fix a copy/paste comment mistake (Bob)

v3:
 - Use prepare/cleanup functions that we've already factored out
 - Use newly refactored pre_commit/commit/post_commit to avoid sleeping
   during vblank evasion

v4:
 - Rebase to latest di-nightly requires adding an 'old_state' parameter
   to atomic_update;

v5:
 - Must have botched a rebase somewhere and lost some work.  Restore
   state 'dirty' flag to let begin/end code know which planes to
   run the pre_commit/post_commit hooks for.  This would have actually
   shown up as broken in the next commit rather than this one.

v6:
 - Squash kerneldoc patch into this one.
 - Previous patches have now already taken care of most of the
   infrastructure that used to be in this patch.  All we're adding here
   now is some thin wrappers.

v7:
 - Check return of intel_plane_duplicate_state() for allocation
   failures.

v8:
 - Drop unused drm_plane_state -> intel_plane_state cast.  (Ander)
 - Squash in actual transition to plane helpers.  Significant
   refactoring earlier in the patchset has made the combined
   prep+transition much easier to swallow than it was in earlier
   iterations. (Ander)

v9:
 - s/track_fbs/disabled_planes/ in the atomic crtc flags.  The only fb's
   we need to update frontbuffer tracking for are those on a plane about
   to be disabled (since the atomic helpers never call prepare_fb() when
   disabling a plane), so the new name more accurately describes what
   we're actually tracking.

Testcase: igt/kms_plane
Testcase: igt/kms_universal_plane
Testcase: igt/kms_cursor_crc
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-12 23:59:31 +01:00
Brian Norris
a1ad3b94a7 ARM: brcmstb: update CPU power management sequence
The automatic CPU power state machine for B15 CPUs does not work
reliably as-is. This patch implements a manual sequence in software to
replace it.

This was tested successfully with over 10,000 hotplug cycles of
something like this:

  echo 0 > /sys/devices/system/cpu/cpu1/online
  echo 1 > /sys/devices/system/cpu/cpu1/online

whereas the existing sequence often locks up after a few hundred cycles.

Fixes: 62639c2f53 ("ARM: brcmstb: reintroduce SMP support")
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2015-01-12 14:59:29 -08:00
Matt Roper
4a3b8769f8 drm/i915: Clarify sprite plane function names (v4)
A few of the sprite-related function names in i915 are very similar
(e.g., intel_enable_planes() vs intel_crtc_enable_planes()) and don't
make it clear whether they only operate on sprite planes, or whether
they also apply to all universal plane types.  Rename a few functions to
be more consistent with our function naming for primary/cursor planes or
to clarify that they apply specifically to sprite planes:

 - s/intel_disable_planes/intel_disable_sprite_planes/
 - s/intel_enable_planes/intel_enable_sprite_planes/

Also, drop the sprite-specific intel_destroy_plane() and just use
the type-agnostic intel_plane_destroy() function.  The extra 'disable'
call that intel_destroy_plane() did is unnecessary since the plane will
already be disabled due to framebuffer destruction by the point it gets
called.

v2: Earlier consolidation patches have reduced the number of functions
    we need to rename here.

v3: Also rename intel_plane_funcs vtable to intel_sprite_plane_funcs
    for consistency with primary/cursor.  (Ander)

v4: Convert comment for intel_plane_destroy() to kerneldoc now that it
    is no longer a static function.  (Ander)

Reviewed-by(v1): Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-12 23:59:15 +01:00
Matt Roper
c34c9ee482 drm/i915: Move vblank evasion to commit (v4)
Move the vblank evasion up from the low-level, hw-specific
update_plane() handlers to the general plane commit operation.
Everything inside commit should now be non-sleeping, so this brings us
closer to how vblank evasion will behave once we move over to atomic.

v2:
 - Restore lost intel_crtc->active check on vblank evasion

v3:
 - Replace assert_pipe_enabled() in intel_disable_primary_hw_plane()
   with an intel_crtc->active test; it turns out assert_pipe_enabled()
   grabs some mutexes and can sleep, which we can't do with interrupts
   disabled.

v4:
 - Equivalent to v2; v3 change is now squashed into an earlier patch
   of the series.  (Ander).

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-12 23:58:47 +01:00
Matt Roper
32b7eeec4d drm/i915: Refactor work that can sleep out of commit (v7)
Once we integrate our work into the atomic pipeline, plane commit
operations will need to happen with interrupts disabled, due to vblank
evasion.  Our commit functions today include sleepable work, so those
operations need to be split out and run either before or after the
atomic register programming.

The solution here calculates which of those operations will need to be
performed during the 'check' phase and sets flags in an intel_crtc
sub-struct.  New intel_begin_crtc_commit() and
intel_finish_crtc_commit() functions are added before and after the
actual register programming; these will eventually be called from the
atomic plane helper's .atomic_begin() and .atomic_end() entrypoints.

v2: Fix broken sprite code split

v3: Make the pre/post commit work crtc-based to match how we eventually
    want this to be called from the atomic plane helpers.

v4: Some platforms that haven't had their watermark code reworked were
    waiting for vblank, then calling update_sprite_watermarks in their
    platform-specific disable code.  These also need to be flagged out
    of the critical section.

v5: Sprite plane test for primary show/hide should just set the flag to
    wait for pending flips, not actually perform the wait.  (Ander)

v6:
 - Rebase onto latest di-nightly; picks up an important runtime PM fix.
 - Handle 'wait_for_flips' flag in intel_begin_crtc_commit(). (Ander)
 - Use wait_for_flips flag for primary plane update rather than
   performing the wait in the check routine.
 - Added kerneldoc to pre_disable/post_enable functions that are no
   longer static.  (Ander)
 - Replace assert_pipe_enabled() in intel_disable_primary_hw_plane()
   with an intel_crtc->active test; it turns out assert_pipe_enabled()
   grabs some mutexes and can sleep, which we can't do with interrupts
   disabled.

v7:
 - Check for fb != NULL when deciding whether the sprite plane hides the
   primary plane during a sprite update.  (PRTS)

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-12 23:58:19 +01:00
Michael Turquette
98f87a7ba2 Merge tag 'v3.19-rockhip-clkfixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-fixes
- two currently unused clocks that need to stay enabled
- fix the lock bit locations of the rk3066 plls
- fix rk3288 core divider values to the ones actually
  specified by the soc vendor
2015-01-12 14:52:45 -08:00
Jani Nikula
2f3408c7ef drm/i915: fix build for CONFIG_BUG=n
If CONFIG_BUG=n __WARN_printf won't be defined leading to the below
build failure. The double underscores should have told us to steer clear
of it anyway.

drivers/gpu/drm/i915/intel_display.c: In function ‘assert_pll’:
drivers/gpu/drm/i915/intel_display.c:1027:2: error: implicit declaration
of function ‘__WARN_printf’ [-Werror=implicit-function-declaration]
  I915_STATE_WARN(cur_state != state,

Use WARN(1, ...) instead. It handles CONFIG_BUG=n gracefully and, with
the constant condition, a sane compiler should reduce it to
__WARN_printf.

This is a regression introduced by

commit e2c719b75c
Author: Rob Clark <robdclark@gmail.com>
Date:   Mon Dec 15 13:56:32 2014 -0500

    drm/i915: tame the chattermouth (v2)

Reported-by: Jim Davis <jim.epost@gmail.com>
Reference: http://mid.gmane.org/CA+r1ZhgHTi7bS2irhtuSUs9aO=Br1dumN8=oAOeaMJDZ_ZhwBw@mail.gmail.com
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-12 23:43:09 +01:00
Olof Johansson
c25aad6318 Merge tag 'renesas-soc-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc
Merge "Renesas ARM Based SoC Updates for v3.20" from Simon Horman:

* Multiplatform support for r8a73a4
* No TWD setup in C for Multiplatform on r8a7779
* Fix is_e2 warning in generic R-Car Gen2 SoC setup code
* Add missing Add missing legacy INTCA0 clock for irqpin module on sh73a0

* tag 'renesas-soc-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: r8a73a4: Multiplatform support
  ARM: shmobile: r8a7779: No TWD setup in C for Multiplatform
  ARM: shmobile: Fix is_e2 warning
  ARM: shmobile: sh73a0 legacy/reference: Add missing INTCA0 clock for irqpin module

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-01-12 14:35:09 -08:00
Olof Johansson
58bdda1b57 Merge tag 'renesas-sh73a0-ccf-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/drivers
Merge "Renesas ARM Based SoC sh73a0 CCF Updates for v3.20" from Simon Horman:

* Add sh73a0 CCF support

* tag 'renesas-sh73a0-ccf-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: sh73a0: disable legacy clock initialization
  ARM: shmobile: sh73a0: add MSTP clock assignments to DT
  ARM: shmobile: kzm9g-reference: Common clock framework DT description
  ARM: shmobile: sh73a0: Common clock framework DT description
  ARM: shmobile: sh73a0: Add CPG register bits header
  clk: shmobile: sh73a0 common clock framework implementation

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-01-12 14:32:47 -08:00
Olof Johansson
63bdaa9332 Merge tag 'renesas-lager-board-removal-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/cleanup
Merge "Renesas ARM Based SoC Lager Board Removal for v3.20" from Simon Horman:

"The serial port rename changes are not strictly related to lager board
removal from a feature point of view. But the lager portion of this change
depends on board removal to avoid a regression of booting using that code,
And thus it seems to make sense to put here. And it seems best to put the
koelsch and lager serial port rename changes in the same branch.

Likewise the removal of bootargs from lager DT depends on removing lager
board code to avoid a regression when using it and thus I have included
it in the same branch."

* Remove legacy r8a7790 SoC and its Lager board code
* Update serial port names on koelsch and lager boards
* Remove console bootargs parameter from lager DT

* tag 'renesas-lager-board-removal-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: lager dts: Drop console= bootargs parameter
  ARM: shmobile: koelsch: Rename SCIF[01] serial ports to ttySC[01]
  ARM: shmobile: lager: Rename SCIFA[01] serial ports to ttySC[01]
  ARM: shmobile: r8a7790: Remove legacy code
  ARM: shmobile: lager: Remove legacy board support
  ARM: shmobile: lager-reference: DTS-only board support

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-01-12 14:25:55 -08:00
Olof Johansson
0dc4849528 Merge tag 'renesas-dt-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt
Merge "Renesas ARM Based SoC DT Updates for v3.20" from Simon Horman:

* Use clock-indices instead of deprecated renesas,clock-indices
* Prepare for r8a73a4 multiplatform support
* Increase clock coverage for r8a779[014]
* Correct r8a7779 clock usage
* Correct LAN9220 VDDVARIO voltage on ape6evm
* Correct QSPI SPI-Flash mode of lager and koelsch
* Correct flash partition label and size on koelsch
* Correct mask for GIC PPI interrupts on r8a779[14]
* Correct BSC bus range on ape6evm-reference

* tag 'renesas-dt-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (30 commits)
  ARM: shmobile: r8a7791: add MLB+ clock
  ARM: shmobile: r8a7790: add MLB+ clock
  ARM: shmobile: ape6evm: Fix LAN9220 VDDVARIO voltage
  ARM: shmobile: r8a73a4: Add r8a73a4-ape6evm.dtb to ARCH_SHMOBILE_MULTI
  ARM: shmobile: ape6evm: Add keypad to the device tree
  ARM: shmobile: ape6evm: Add LEDs to the device tree
  ARM: shmobile: ape6evm: synchronize dts with reference platform
  ARM: shmobile: ape6evm: fix compatible string for Ethernet controller
  ARM: shmobile: r8a7794: Add MMCIF clock to device tree
  ARM: shmobile: r8a7794: Add SDHI clocks to device tree
  ARM: shmobile: r8a7794: Add I2C clocks to device tree
  ARM: shmobile: r8a7779: Add TWD device to DTS
  ARM: shmobile: r8a7779: Use MSTP for SCIF clocks
  ARM: shmobile: r8a7779: Use R8A7779_CLK_P as SCIF parent clock
  ARM: shmobile: r8a7794: Add QSPI clock to device tree
  ARM: shmobile: lager: Fix QSPI mode of SPI-Flash into mode3
  ARM: shmobile: r8a7794: Add SYS-DMAC clocks to device tree
  ARM: shmobile: r8a7791: Add IPMMU-SGX clock to device tree
  ARM: shmobile: koelsch: Fix QSPI mode of SPI-Flash into mode3
  ARM: shmobile: r8a7794: Add USBDMAC[01] clocks to device tree
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-01-12 14:24:07 -08:00
Olof Johansson
318a68f2a7 Merge tag 'renesas-dt-cleanups-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt
Merge "Renesas ARM Based SoC DT Cleanups for v3.20" from Simon Horman:

* Replace status value "ok" with "okay"

* tag 'renesas-dt-cleanups-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: kzm9g-reference dts: Replace status value "ok" by "okay"
  ARM: shmobile: alt dts: Replace status value "ok" by "okay"
  ARM: shmobile: koelsch dts: Replace status value "ok" by "okay"
  ARM: shmobile: henninger dts: Replace status value "ok" by "okay"
  ARM: shmobile: lager dts: Replace status value "ok" by "okay"
  ARM: shmobile: armadillo800eva dts: Replace status value "ok" by "okay"
  ARM: shmobile: genmai dts: Replace status value "ok" by "okay"

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-01-12 14:22:42 -08:00
Olof Johansson
f58350eb01 Merge tag 'renesas-defconfig-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/defconfig
Merge "Renesas ARM Based SoC Defconfig Updates for v3.20" from Simon Horman:

* Enable DA9063, MICREL_PHY and MTD_BLOCK watchdog in multiplatform defconfig
* Update AK8975 config option in kzm9g defconfig

* tag 'renesas-defconfig-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: Enable DA9063 watchdog in multiplatform defconfig
  ARM: shmobile: Enable MICREL_PHY in shmobile_defconfig
  ARM: shmobile: defconfig: add MTD_BLOCK
  ARM: shmobile: defconfig: cleanup by savedefconfig
  ARM: shmobile: kzm9g_defconfig: Update AK8975 config option

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-01-12 14:21:40 -08:00
Alex Deucher
5615f890bc drm/radeon: add si dpm quirk list
This adds a quirks list to fix stability problems with
certain SI boards.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=76490

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2015-01-12 17:16:50 -05:00
Christian König
ad1a62227f drm/radeon: don't print error on -ERESTARTSYS
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-01-12 17:16:49 -05:00
Daniel Vetter
0a87a2db48 Merge tag 'topic/i915-hda-componentized-2015-01-12' into drm-intel-next-queued
Conflicts:
	drivers/gpu/drm/i915/intel_runtime_pm.c

Separate branch so that Takashi can also pull just this refactoring
into sound-next.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-01-12 23:07:46 +01:00
David S. Miller
d2c60b1350 Merge branch 'tuntap_queues'
Pankaj Gupta says:

====================
Increase the limit of tuntap queues

Networking under KVM works best if we allocate a per-vCPU rx and tx
queue in a virtual NIC. This requires a per-vCPU queue on the host side.
Modern physical NICs have multiqueue support for large number of queues.
To scale vNIC to run multiple queues parallel to maximum number of vCPU's
we need to increase number of queues support in tuntap.

Changes from v4:
PATCH2: Michael.S.Tsirkin - Updated change comment message.

Changes from v3:
PATCH1: Michael.S.Tsirkin - Some cleanups and updated commit message.
                            Perf numbers on 10 Gbs NIC
Changes from v2:
PATCH 3: David Miller     - flex array adds extra level of indirection
                            for preallocated array.(dropped, as flow array
			    is allocated using kzalloc with failover to zalloc).
Changes from v1:
PATCH 2: David Miller     - sysctl changes to limit number of queues
                            not required for unprivileged users(dropped).

Changes from RFC
PATCH 1: Sergei Shtylyov  - Add an empty line after declarations.
PATCH 2: Jiri Pirko -       Do not introduce new module paramaters.
	 Michael.S.Tsirkin- We can use sysctl for limiting max number
                            of queues.

This series is to increase the number of tuntap queues. Original work is being
done by 'jasowang@redhat.com'. I am taking this 'https://lkml.org/lkml/2013/6/19/29'
patch series as a reference. As per discussion in the patch series:

There were two reasons which prevented us from increasing number of tun queues:

- The netdev_queue array in netdevice were allocated through kmalloc, which may
  cause a high order memory allocation too when we have several queues.
  E.g. sizeof(netdev_queue) is 320, which means a high order allocation would
  happens when the device has more than 16 queues.

- We store the hash buckets in tun_struct which results a very large size of
  tun_struct, this high order memory allocation fail easily when the memory is
  fragmented.

The patch 60877a32bc increases the number of tx
queues. Memory allocation fallback to vzalloc() when kmalloc() fails.

This series tries to address following issues:

- Increase the number of netdev_queue queues for rx similarly its done for tx
  queues by falling back to vzalloc() when memory allocation with kmalloc() fails.

- Increase number of queues to 256, maximum number is equal to maximum number
  of vCPUS allowed in a guest.

I have also done testing with multiple parallel Netperf sessions for different
combination of queues and CPU's. It seems to be working fine without much increase
in cpu load with increase in number of queues. I also see good increase in throughput
with increase in number of queues. Though i had limitation of 8 physical CPU's.

For this test: Two Hosts(Host1 & Host2) are directly connected with cable
Host1 is running Guest1. Data is sent from Host2 to Guest1 via Host1.

Host kernel: 3.19.0-rc2+, AMD Opteron(tm) Processor 6320
NIC : Emulex Corporation OneConnect 10Gb NIC (be3)

Patch Applied  %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle  throughput
Single Queue, 2 vCPU's
-------------
Before Patch :all    0.19    0.00    0.16    0.07    0.04    0.10    0.00    0.18    0.00   99.26  57864.18
After  Patch :all    0.99    0.00    0.64    0.69    0.07    0.26    0.00    1.58    0.00   95.77  57735.77

With 2 Queues, 2 vCPU's
---------------
Before Patch :all    0.19    0.00    0.19    0.10    0.04    0.11    0.00    0.28    0.00   99.08  63083.09
After  Patch :all    0.87    0.00    0.73    0.78    0.09    0.35    0.00    2.04    0.00   95.14  62917.03

With 4 Queues, 4 vCPU's
--------------
Before Patch :all    0.20    0.00    0.21    0.11    0.04    0.12    0.00    0.32    0.00   99.00  80865.06
After  Patch :all    0.71    0.00    0.93    0.85    0.11    0.51    0.00    2.62    0.00   94.27  86463.19

With 8 Queues, 8 vCPU's
--------------
Before Patch :all    0.19    0.00    0.18    0.09    0.04    0.11    0.00    0.23    0.00   99.17  86795.31
After  Patch :all    0.65    0.00    1.18    0.93    0.13    0.68    0.00    3.38    0.00   93.05  89459.93

With 16 Queues, 8 vCPU's
--------------
After  Patch :all    0.61    0.00    1.59    0.97    0.18    0.92    0.00    4.32    0.00   91.41  120951.60
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 17:05:14 -05:00
Pankaj Gupta
baf71c5c1f tuntap: Increase the number of queues in tun.
Networking under kvm works best if we allocate a per-vCPU RX and TX
queue in a virtual NIC. This requires a per-vCPU queue on the host side.

It is now safe to increase the maximum number of queues.
Preceding patch: 'net: allow large number of rx queues'
made sure this won't cause failures due to high order memory
allocations. Increase it to 256: this is the max number of vCPUs
KVM supports.

Size of tun_struct changes from 8512 to 10496 after this patch. This keeps
pages allocated for tun_struct before and after the patch to 3.

Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Reviewed-by: David Gibson <dgibson@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 17:05:05 -05:00
Pankaj Gupta
1059590254 net: allow large number of rx queues
netif_alloc_rx_queues() uses kcalloc() to allocate memory
for "struct netdev_queue *_rx" array.
If we are doing large rx queue allocation kcalloc() might
fail, so this patch does a fallback to vzalloc().
Similar implementation is done for tx queue allocation in
netif_alloc_netdev_queues().

We avoid failure of high order memory allocation
with the help of vzalloc(), this allows us to do large
rx and tx queue allocation which in turn helps us to
increase the number of queues in tun.

As vmalloc() adds overhead on a critical network path,
__GFP_REPEAT flag is used with kzalloc() to do this fallback
only when really needed.

Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: David Gibson <dgibson@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 17:05:05 -05:00
Kenneth Williams
e350a96ec9 team: Remove dead code
The deleted lines are called from a function which is called:
1) Only through __team_options_register via team_options_register and
2) Only during initialization / mode initialization when there are no
ports attached.
Therefore the ports list is guarenteed to be empty and this code will
never be executed.

Signed-off-by: Kenneth Williams <ken@williamsclan.us>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 17:02:04 -05:00
David Decotigny
b1e8bc617d net: bnx2x: avoid macro redefinition
Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:51:15 -05:00
Rickard Strandqvist
ddcde70cbf net: sched: sch_teql: Remove unused function
Remove the function teql_neigh_release() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:50:46 -05:00
Rickard Strandqvist
83400b990c net: xfrm: xfrm_algo: Remove unused function
Remove the function aead_entries() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:50:46 -05:00
David S. Miller
d0d2cc53a0 Merge branch 'bridge_vlan_ranges'
Roopa Prabhu says:

====================
bridge: support for vlan range in setlink/dellink

This series adds new flags in IFLA_BRIDGE_VLAN_INFO to indicate
vlan range.

Will post corresponding iproute2 patches if these get accepted.

v1-> v2
    - changed patches to use a nested list attribute
    IFLA_BRIDGE_VLAN_INFO_LIST as suggested by scott feldman
    - dropped notification changes from the series. Will post them
    separately after this range message is accepted.

v2 -> v3
    - incorporated some review feedback
    - include patches to fill vlan ranges during getlink
    - Dropped IFLA_BRIDGE_VLAN_INFO_LIST. I think it may get
    confusing to userspace if we introduce yet another way to
    send lists. With getlink already sending nested
    IFLA_BRIDGE_VLAN_INFO in IFLA_AF_SPEC, It seems better to
    use the existing format for lists and just use the flags from v2
    to mark vlan ranges
====================

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:47:13 -05:00
Roopa Prabhu
36cd0ffbab bridge: new function to pack vlans into ranges during gets
This patch adds new function to pack vlans into ranges
whereever applicable using the flags BRIDGE_VLAN_INFO_RANGE_BEGIN
and BRIDGE VLAN_INFO_RANGE_END

Old vlan packing code is moved to a new function and continues to be
called when filter_mask is RTEXT_FILTER_BRVLAN.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:47:05 -05:00
Roopa Prabhu
35a27cee32 rtnetlink: new filter RTEXT_FILTER_BRVLAN_COMPRESSED
This filter is same as RTEXT_FILTER_BRVLAN except that it tries
to compress the consecutive vlans into ranges.

This helps on systems with large number of configured vlans.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:47:04 -05:00
Roopa Prabhu
bdced7ef78 bridge: support for multiple vlans and vlan ranges in setlink and dellink requests
This patch changes bridge IFLA_AF_SPEC netlink attribute parser to
look for more than one IFLA_BRIDGE_VLAN_INFO attribute. This allows
userspace to pack more than one vlan in the setlink msg.

The dumps were already sending more than one vlan info in the getlink msg.

This patch also adds bridge_vlan_info flags BRIDGE_VLAN_INFO_RANGE_BEGIN and
BRIDGE_VLAN_INFO_RANGE_END to indicate start and end of vlan range

This patch also deletes unused ifla_br_policy.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:47:04 -05:00
Vincenzo Maffione
dd2e8bf586 drivers: net: xen-netfront: remove residual dead code
This patch removes some unused arrays from the netfront private
data structures. These arrays were used in "flip" receive mode.

Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:44:27 -05:00
Shrikrishna Khare
5ec82c1e4c Driver: Vmxnet3: Reinitialize vmxnet3 backend on wakeup from hibernate
Failing to reinitialize on wakeup results in loss of network connectivity for
vmxnet3 interface.

Signed-off-by: Srividya Murali <smurali@vmware.com>
Signed-off-by: Shrikrishna Khare <skhare@vmware.com>
Reviewed-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:43:58 -05:00
Alexey Khoroshilov
49c9e7c21a usb/kaweth: use GFP_ATOMIC under spin_lock in usb_start_wait_urb()
Commit e4c7f259c5 ("USB: kaweth.c: use GFP_ATOMIC under spin_lock")
makes sure that kaweth_internal_control_msg() allocates memory with GFP_ATOMIC,
but kaweth_internal_control_msg() also calls usb_start_wait_urb()
that still allocates memory with GFP_NOIO.

The patch fixes usb_start_wait_urb() as well.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:42:49 -05:00
Thomas Falcon
eddd63a670 MAINTAINERS: add me as ibmveth maintainer
Adding myself as the ibmveth maintainer and replacing
Santiago Leon.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Cc: Santiago Leon <santi_leon@yahoo.com>
Cc: Brian King <brking@linux.vnet.ibm.com>
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:42:05 -05:00
Jonathan Toppins
7bfa014500 bonding: cleanup bond_opts array
Remove the empty array element initializer and size the array with
BOND_OPT_LAST so the compiler will complain if more elements are in
there than should be.

An interesting unwanted side effect of this initializer is that if one
inserts new options into the middle of the array then this initializer
will zero out the option that equals BOND_OPT_TLB_DYNAMIC_LB+1.

Example:
Extend the OPTS enum:
enum {
   ...
   BOND_OPT_TLB_DYNAMIC_LB,
   BOND_OPT_LACP_NEW1,
   BOND_OPT_LAST
};

Now insert into bond_opts array:
static const struct bond_option bond_opts[] = {
      ...
      [BOND_OPT_LACP_RATE] = { .... unchanged stuff .... },
      [BOND_OPT_LACP_NEW1] = { ... new stuff ... },
      ...
      [BOND_OPT_TLB_DYNAMIC_LB] = { .... unchanged stuff ....},
      { } // MARK A
};

Since BOND_OPT_LACP_NEW1 = BOND_OPT_TLB_DYNAMIC_LB+1, the last
initializer (MARK A) will overwrite the contents of BOND_OPT_LACP_NEW1
and can be easily viewed with the crash utility.

Signed-off-by: Jonathan Toppins <jtoppins@cumulusnetworks.com>
Cc: Andy Gospodarek <gospo@cumulusnetworks.com>
Cc: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Acked-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 16:39:31 -05:00
Dave Airlie
426959c945 drm: fix mismerge in drm_crtc.c
Daniel merged two things in 72a3697097,
but he merged this code twice, Dan's static checker spotted it.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-01-13 07:38:53 +10:00
Sergei Shtylyov
d7b3968dbc usb: renesas_usbhs: add OTG ID signal sensing
On the Renesas R8A7791 SoC based boards there's MAX3355 USB OTG chip and mini-AB
USB connector corresponding to USB port 0 driven either by EHCI/OHCI or  Renesas
USBHS gadget controller. And we'd like the host/gadget  drivers to work based on
the cable type connected. An 'extcon' driver for MAX3355 has been written, so we
only need to bind  to it via device tree which I'm doing in this patch.

(Perhaps, it would also make sense to use OTG HNP when the USBHS host mode is
active and a B-cable is connected but I don't have access to host-capable USBHS,
so  wouldn't be able to test it.)

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:36:28 -06:00
Mian Yousaf Kaukab
6d713c1531 usb: dwc2: gadget: report disconnection after reset
If usb bus is reset without a physical disconnection, all endpoints
will remain open. Call s3c_hsotg_disconnect() from reset handler to
report a disconnect to gadget framework. hsotg->connected is checked
in s3c_hsotg_disconnect() before processing disconnect.

In some cases, USBRst is seen before EnumDone and after it as well.
So move setting of hsotg->connected to set-address to avoid reporting
extra disconnection in this case.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:58 -06:00
Gregory Herrero
1b7a66b4d3 usb: dwc2: gadget: force gadget initialization in dev mode
When booting with id pin grounded, dwc2 default to host mode.
Thus, force device mode prior initializing gadget part.
Else fifo init will fail since fifo values are not correct
in host mode.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:54 -06:00
Gregory Herrero
596d696a5d usb: dwc2: gadget: add vbus_draw support
This callback informs the driver about the total amount of current it
is allowed to draw. Share this information with the phy so that
current limits can be set for charging for example.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:49 -06:00
Gregory Herrero
6d13673e6b usb: dwc2: gadget: fix pullup handling
Gadget must be informed about disconnection when pullup is
removed.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:45 -06:00
Gregory Herrero
7fcbc95c1f usb: dwc2: gadget: reset fifo_map when initializing fifos
After all endpoints are disabled, fifo_map should have reached 0.
Its a bug if if didn't, so warn about it and reset it to 0 so that
driver can continue using all the fifos.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:41 -06:00
Mian Yousaf Kaukab
4556e12c9c usb: dwc2: gadget: fix fifo allocation leak
When selecting different alt setting, s3c_hsotg_ep_enable can be
called with fifo already allocated. Allocate fifo again only if
required and after deallocating the previous fifo.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:36 -06:00
Mian Yousaf Kaukab
ca4c55ad89 usb: dwc2: gadget: pick smallest acceptable fifo
Current algorithm picks the first fifo which is equal to or greater
than the required size. This can result in bigger fifos assigned to
endpoints with smaller maxps. Change the algorithm to pick the
smallest fifo which is greater than or equal to the required size.

Moreover, only use signed variables when required.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:32 -06:00
Mian Yousaf Kaukab
8a20fa457e usb: dwc2: gadget: rename sent_zlp to send_zlp
This flag is set before sending the zlp. So use present tense instead
of the past tense.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:27 -06:00
Gregory Herrero
83d982234e usb: dwc2: gadget: add vbus_session support
Enable phy driver to report vbus session. This allows us to remove
D+ pullup when vbus is not present.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 15:34:23 -06:00