Changbin Du [Tue, 26 Sep 2017 08:19:13 +0000 (16:19 +0800)]
drm/i915/gvt: Add basic debugfs infrastructure
We need debugfs entry to expose some debug information of gvt and vGPUs.
The first tool will be added is mmio-diff, which help to find the
difference values of host and vGPU mmio. It's useful for platform
enabling.
This patch just add a basic debugfs infrastructure, each vGPU has its own
sub-folder. Two simple attributes are created as a template.
.
├── num_tracked_mmio
├── vgpu1
| └── active
└── vgpu2
└── active
Signed-off-by: Changbin Du <changbin.du@intel.com> Reviewed-by: Zhi Wang <zhi.a.wang@intel.com> Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
fred gao [Thu, 28 Sep 2017 03:03:02 +0000 (11:03 +0800)]
drm/i915/gvt: Move vGPU type related code into gvt file
In this patch, all the vGPU type related code will be merged into
same gvt file and the common interface will be exposed to both
XenGT and KvmGT.
v2:
- remove the useless mdev_* gvt_ops.
add get_gvt_attr ops for MPT module.
intel_gvt_{init,cleanup}_vgpu_type_groups are initialized in
gvt part. (Wang, Zhi)
- set gvt_vgpu_type_groups[i] to NULL. (Zhang,Xiong)
Signed-off-by: fred gao <fred.gao@intel.com> Reviewed-by: Zhi Wang <zhi.a.wang@intel.com> Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Shuo Liu [Thu, 21 Sep 2017 00:02:31 +0000 (08:02 +0800)]
drm/i915/gvt: Use dyndbg for gvt debug info
It's better enable/disable and classify gvt debug info dynamically.
This patch change it to dyndbg so can be dynamically enable/disable
each item. All gvt log can be enabled by,
$ echo 'file *gvt* +p' > /sys/kernel/debug/dynamic_debug/control
Signed-off-by: Shuo Liu <shuo.a.liu@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Colin Ian King [Tue, 19 Sep 2017 15:55:34 +0000 (16:55 +0100)]
drm/i915/gvt: ensure -ve return value is handled correctly
An earlier fix changed the return type from find_bb_size however the
integer return is being assigned to a unsigned int so the -ve error
check will never be detected. Make bb_size an int to fix this.
Detected by CoverityScan CID#1456886 ("Unsigned compared against 0")
Fixes: 7a057a789942 ("drm/i915/gvt: Refine error handling for perform_bb_shadow") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
fred gao [Tue, 19 Sep 2017 07:11:28 +0000 (15:11 +0800)]
drm/i915/gvt: Add VM healthy check for workload_thread
When a scan error occurs in dispatch_workload, this patch is to
check the healthy state and free all the queued workloads before
the failsafe mode is entered.
Signed-off-by: fred gao <fred.gao@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
fred gao [Tue, 19 Sep 2017 21:36:47 +0000 (05:36 +0800)]
drm/i915/gvt: Change the return type during command scan
Generally, there are 3 types of errors during command scan: a) some
commands might be unknown with EBADRQC; b) some cmd access invalid
address with EFAULT; c) some unexpected force nonpriv cmd with EPERM.
later the healthy state can be judged through the return error.
v2:
- remove some internal i915 errors rating. (Zhenyu)
v3:
- the healthy state is judged through the internal defined return
error. (Zhenyu)
- force non priv cmd error can be ignored. (Kevin)
v4:
- reuse standard defined errno instead of recreate, e.g EBADRQC for
unknown cmd, EFAULT for invalid address, EPERM for nonpriv. (Zhenyu)
v5:
- remove some irrelevant code for the patch.
- fix typo of vgpu_is_vm_unhealthy. (Zhenyu)
v6:
- move the healthy check and failsafe code into another patch. (Zhenyu)
v7:
- polish title and commit message. (Zhenyu)
Signed-off-by: fred gao <fred.gao@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Zhi Wang [Sun, 10 Sep 2017 14:01:10 +0000 (22:01 +0800)]
drm/i915/gvt: Do not allocate initial ring scan buffer
Theoretically, the largest bulk of commands in the ring buffer of an
engine might be the first submission, which usually contains a lot
of commands to initialize the HW. After removing the initial allocation
of the ring scan buffer and let krealloc() do everything we need, we
still have a big chance to get the buffer of suitable size in the first
submission.
To move workload related functions into scheduler.c, an expected way is
to collect all the init/clean functions related to vGPU workload
submission into fewer functions.
Rename intel_vgpu_{init, clean}_gvt_context() for above usage in future.
Zhi Wang [Sun, 10 Sep 2017 08:40:04 +0000 (16:40 +0800)]
drm/i915/gvt: Make elsp_dwords in the right order
The context descriptors in elsp_dwords are stored in a reversed order and
the definition of context descriptor is also reversed. The revesred stuff
is hard to be used and might cause misunderstanding. Make them in the right
oder for following code re-factoring.
drm/i915/gvt: Add support for opregion virtualization
opregion emulated with a copy from host which leads to some display
bugs such as guest resolution adjustment failure due to host opregion
fail to claim port D support. with a fake opregion table provided
to fully emulate opregion to meet guest port requirement.
v1 - initial patch
v2 - reforamt opregion arrary with 0x02x output
v3 - opregion array removed with opregion generation on host initizaiton
v4 - rebased v3 patch from stable branch to staging branch which also has
different struct child_device_config and addressed v3 review comments.
Signed-off-by: Xiaolin Zhang <xiaolin.zhang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Chris Wilson [Tue, 14 Nov 2017 13:51:16 +0000 (13:51 +0000)]
drm/i915: Remove pre-production pooled-EU w/a for Broxton
WaEnablePooledEuFor2x6 only applies to preproduction models, unsupported
since commit 710812cade3d ("drm/i915: Add early BXT sdv to the list of
preproduction machines").
Chris Wilson [Wed, 15 Nov 2017 15:12:04 +0000 (15:12 +0000)]
drm/i915: Make request's wait-for-space explicit
At the start of building a request, we would wait for roughly enough
space to fit the average request (to reduce the likelihood of having to
wait and abort partway through request construction). To achieve we
would try to begin a 0-length command packet, this just adds extra
confusion so make the wait-for-space explicit, as in the next patch we
want to move it from the backend to the i915_gem_request_alloc() so it
can ensure that the wait-for-space is the first operation in building a
new request.
Chris Wilson [Wed, 15 Nov 2017 15:12:03 +0000 (15:12 +0000)]
drm/i915/selftests: Increase size for mock ringbuffer
We don't actually emit any commands into the ringbuffer, so we set it
very small. However, an upcoming change centralises the wait-for-space
into i915_gem_request_alloc() and that imposes a minimum size upon all
ringbuffers (mock or real) of MIN_SPACE_FOR_ADD_REQUEST. Grow the
mock ringbuffer such that we allocate a single page for the struct+buffer,
satisfying the new condition without wasting too much space.
Chris Wilson [Wed, 15 Nov 2017 13:17:05 +0000 (13:17 +0000)]
drm/i915: Initialise entry in intel_ppat_get() for older compilers
gcc-4.7.3 is confused by the guards inside intel_ppat_get() and reports:
drivers/gpu/drm/i915/i915_gem_gtt.c: In function ‘intel_ppat_get’:
drivers/gpu/drm/i915/i915_gem_gtt.c:3044:27: warning: ‘entry’ may be used uninitialized in this function [-Wmaybe-uninitialized]
Forgive the compiler this once, and rearrange the code so that entry is
always initialised.
v2: Flavour with a bit of NULL (instead of ERR_PTR(-ENOSPC))
Ville Syrjälä [Thu, 2 Nov 2017 15:17:37 +0000 (17:17 +0200)]
drm/i915: Use ELK stolen memory reserved detection for ILK
While I have no solid proof that ILK follows the ELK path when it
comes to the stolen memory reserved area, there are some hints that
it might be the case. Unfortunately my ILK doesn't have this enabled,
and no way to enable it via the BIOS it seems.
So let's have ILK use the ELK code path, and let's toss in a WARN
into the code to see if we catch anyone with an ILK that has this
enabled to further analyze the situation.
Ville Syrjälä [Thu, 2 Nov 2017 15:17:36 +0000 (17:17 +0200)]
drm/i915: Make the report about a bogus stolen reserved area an error
Now that we should be properly filtering out the cases when the stolen
reserved area is disabled, let's convert the debug message about a
misplaced reserved area into an error.
Ville Syrjälä [Thu, 2 Nov 2017 15:17:35 +0000 (17:17 +0200)]
drm/i915: Check if the stolen memory "reserved" area is enabled or not
Apparently there are some machines that put semi-sensible looking values
into the stolen "reserved" base and size, except those values are actually
outside the stolen memory. There is a bit in the register which
supposedly could tell us whether the reserved area is even enabled or
not. Let's check for that before we go trusting the base and size.
Hans de Goede [Tue, 14 Nov 2017 13:55:18 +0000 (14:55 +0100)]
drm/i915: Call uncore_suspend before platform suspend handlers
Quoting Ville: "the forcewake timer might still be active until the uncore
suspend, and having active forcewakes while we've already told the GT wake
stuff to stop acting normally doesn't seem quite right to me."
Hans de Goede [Tue, 14 Nov 2017 13:55:17 +0000 (14:55 +0100)]
drm/i915: Re-register PMIC bus access notifier on runtime resume
intel_uncore_suspend() unregisters the uncore code's PMIC bus access
notifier and gets called on both normal and runtime suspend.
intel_uncore_resume_early() re-registers the notifier, but only on
normal resume. Add a new intel_uncore_runtime_resume() function which
only re-registers the notifier and call that on runtime resume.
Hans de Goede [Fri, 10 Nov 2017 15:03:01 +0000 (16:03 +0100)]
drm/i915: Fix false-positive assert_rpm_wakelock_held in i915_pmic_bus_access_notifier v2
assert_rpm_wakelock_held is triggered from i915_pmic_bus_access_notifier
even though it gets unregistered on (runtime) suspend, this is caused
by a race happening under the following circumstances:
And pm_runtime_put_autosuspend calls intel_runtime_suspend from
a workqueue, so there is ample of time between the atomic_dec() and
intel_runtime_suspend() unregistering the notifier. If the notifier
gets called in this windowd assert_rpm_wakelock_held falsely triggers
(at this point we're not runtime-suspended yet).
This commit adds disable_rpm_wakeref_asserts and
enable_rpm_wakeref_asserts calls around the
intel_uncore_forcewake_get(FORCEWAKE_ALL) call in
i915_pmic_bus_access_notifier fixing the false-positive WARN_ON.
Changes in v2:
-Reword comment explaining why disabling the wakeref asserts is
ok and necessary
Chris Wilson [Tue, 14 Nov 2017 22:33:46 +0000 (22:33 +0000)]
drm/i915/selftests: Always initialise err
smatch does not track initialised values as well as gcc, and this
triggers many warnings by smatch not presented by gcc. Silence smatch by
initialising the error values to -ENODEV, which we use to denote
internal errors. (If we see a selftest fail with a silent -ENODEV, we
know smatch was right!)
v2: smatch was right about igt_create_vma(), it may unlikely fail on the
first object allocation which we want to be loud about.
Chris Wilson [Tue, 14 Nov 2017 13:03:00 +0000 (13:03 +0000)]
drm/i915: Resume GuC before using GEM
Resuming GEM presumes it can talk to hw, in particular to ensure the
kernel context is loaded upon resume for powersaving. If the GuC is
still asleep at this point, we upset the HW. Rearrange the resume such
that we restore the original order of init-hw, resume-guc, use-gem.
Fixes: 2dcc412c10a3 ("drm/i915: Remove redundant intel_autoenable_gt_powersave()")
References: a385494fe8ec ("drm/i915/guc: Add host2guc notification for suspend and resume") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Alex Dai <yu.dai@intel.com> Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171114130300.25677-2-chris@chris-wilson.co.uk Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Rodrigo Vivi [Sat, 11 Nov 2017 00:03:19 +0000 (16:03 -0800)]
drm/i915: Display WA #1185 WaDisableDARBFClkGating:cnl, glk
Display is not sending a PMRsp when a PMReq is received
at the same time that all planes are turned off.
State machine in the dcprunit is stuck in the WAIT4DONE
state which means that there is no fill_done.
WA: disable arbiter clock gating, set bit [27] of 0x46530
v2: As Ville pointed out, based on the description the issue
can happen when disabling the planes, similar to
WaRsPkgCStateDisplayPMReq:hsw
Also description of the issue was updated on commit
message to make it more clear that we need this
earlier.
v3: Restore comment about possibility to system hang
to where we are sure about it, without speculation. (Ville).
v4: Remove doubled sob. Actually do v3 changes :/
Chris Wilson [Tue, 14 Nov 2017 13:43:40 +0000 (13:43 +0000)]
drm/i915: Unconditionally apply the Broxton register workaround set
Having removed the preproduction Broxton support (see commit 710812cade3d
("drm/i915: Add early BXT sdv to the list of preproduction machines")),
we know we then always need the production Broxton workaround set and do
not need a predicate upon revision.
We've begun excluding pre-production Broxton machines since commit 710812cade3d ("drm/i915: Add early BXT sdv to the list of preproduction
machines"), now remove the list of workaround register values for those
early machines.
Chris Wilson [Sat, 11 Nov 2017 10:03:36 +0000 (10:03 +0000)]
drm/i915: Unify SLICE_UNIT_LEVEL_CLKGATE w/a for cnl
gem_workarounds reports that the SLICE_UNIT_LEVEL_CLKGATE write isn't
sticking. Commit b64b305a4d13 ("drm/i915: Implement
ReadHitWriteOnlyDisable.") presumes that SLICE_UNIT_LEVEL_CLKGATE is a
masked register in the context image, but commit 4f63b8c9a039
("drm/i915/cnl: Introduce initial Cannonlake Workarounds.") lists it as
an ordering unmasked register. The masked write will be losing the
default settings if we trust the original commit. That gem_workarounds
reports the value is lost entirely is more worrying though -- but it
clearly suggests that it is not a masked register in the context image,
so unify both w/a to use the original rmw.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103705 Fixes: b64b305a4d13 ("drm/i915: Implement ReadHitWriteOnlyDisable.")
References: 4f63b8c9a039 ("drm/i915/cnl: Introduce initial Cannonlake Workarounds.") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Rafael Antognolli <rafael.antognolli@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171111100336.11020-1-chris@chris-wilson.co.uk Reviewed-by: Rafael Antognolli <rafael.antognolli@intel.com>
James Ausmus [Mon, 13 Nov 2017 18:11:28 +0000 (10:11 -0800)]
drm/i915/glk: Refactor handling of PLANE_COLOR_CTL for GLK+
Since GLK, some plane configuration settings have moved to the
PLANE_COLOR_CTL register. Refactor handling of the register to work like
PLANE_CTL. This also allows us to fix the set/read of the plane Alpha
Mode for GLK+.
v2: Adjust ordering of platform checks to be newest->oldest, drop
redundant comment about alpha blending. (Ville)
v3: Move Alpha Mode bits out of skl_plane_ctl_format into
skl_plane_ctl_alpha, and drop glk_plane_ctl_format, drop initialization
of state->color_ctl on platforms that don't use it, and drop color_ctl
local var. (Ville)
v4: Consolidate skl_plane_ctl_format switch statement on formats that
return the same settings. (Ville)
Signed-off-by: James Ausmus <james.ausmus@intel.com> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171113181128.2926-1-james.ausmus@intel.com Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tina Zhang [Tue, 14 Nov 2017 10:25:13 +0000 (10:25 +0000)]
drm/i915: Introduce GEM proxy
GEM proxy is a kind of GEM, whose backing physical memory is pinned
and produced by guest VM and is used by host as read only. With GEM
proxy, host is able to access guest physical memory through GEM object
interface. As GEM proxy is such a special kind of GEM, a new flag
I915_GEM_OBJECT_IS_PROXY is introduced to ban host from changing the
backing storage of GEM proxy.
v3:
- update "Reviewed-by". (Joonas)
v2:
- return -ENXIO when pin and map pages of GEM proxy to kernel space.
(Chris)
Here are the histories of this patch in "Dma-buf support for Gvt-g"
patch-set:
v14:
- return -ENXIO when gem proxy object is banned by ioctl.
(Chris) (Daniel)
v13:
- add comments to GEM proxy. (Chris)
- don't ban GEM proxy in i915_gem_sw_finish_ioctl. (Chris)
- check GEM proxy bar after finishing i915_gem_object_wait. (Chris)
- remove GEM proxy bar in i915_gem_madvise_ioctl.
v6:
- add gem proxy barrier in the following ioctls. (Chris)
i915_gem_set_caching_ioctl
i915_gem_set_domain_ioctl
i915_gem_sw_finish_ioctl
i915_gem_set_tiling_ioctl
i915_gem_madvise_ioctl
Lucas De Marchi [Tue, 14 Nov 2017 00:46:38 +0000 (16:46 -0800)]
drm/i915: Fix function name in comment
Commit 2d57673f5719 (drm/i915/bxt: Fix PPS lost state after suspend
breaking eDP link training) renamed the function to
intel_power_sequencer_reset() but forgot to update comment.
Dave Airlie [Tue, 14 Nov 2017 04:12:43 +0000 (14:12 +1000)]
Merge tag 'exynos-drm-next-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next
- Improved HDMI and Mixer drivers
. It moves mode setup and plane update code to commit
like other CRTC drivers
. It makes mode commit to be called in enable callback only one time
. some cleanup and fixup to HDMI and Mixer drivers.
. It adds 1024x768, 1280x1024 and 1366x768 modes support
- Added HDMI audio interface driver
. As of now, HDMI audio worked on boards with external audio codec connected
in parallel with the HDMI audio transmitter's I2S interface.
This patch is required to support HDMI audio properly.
* tag 'exynos-drm-next-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm: exynos: Add driver for HDMI audio interface
drm/exynos/hdmi: add 85.5MHz pixel clock for v14 HDMI PHY
drm/exynos/mixer: enable support for 1024x768 and 1280x1024 modes
drm/exynos/hdmi: quirk for support mode timings conversion
drm/exynos/mixer: pass actual mode on MIXER to encoder
drm/exynos: add mode_fixup callback to exynos_drm_crtc_ops
drm/exynos/hdmi: remove redundant mode field
drm/exynos/mixer: remove mixer_resources sub-structure
drm/exynos/mixer: fix mode validation code
drm/exynos/mixer: move resolution configuration to single function
drm/exynos/mixer: move mode commit to enable callback
drm/exynos/mixer: abstract out output mode setup code
Dave Airlie [Mon, 13 Nov 2017 19:53:39 +0000 (05:53 +1000)]
Merge branch 'linus-4.14-rc4-acp-prereq' of git://people.freedesktop.org/~agd5f/linux into drm-next
This is a shared tree between drm and audio for some amd bits.
* 'linus-4.14-rc4-acp-prereq' of git://people.freedesktop.org/~agd5f/linux:
drm/amdgpu Moving amdgpu asic types to a separate file
ASoC: AMD: Added asic_type as ACP DMA driver platform data
drm/amd/amdgpu: Added asic_type as ACP DMA driver platform data
Dave Airlie [Mon, 13 Nov 2017 19:29:34 +0000 (05:29 +1000)]
Merge tag 'drm-misc-fixes-2017-11-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
Driver Changes:
- qxl: Use a shadow bo as primary and blit to it to fix flicker (Gerd)
- rockchip: Convert psr spinlock to mutex (Emil)
Cc: Emil Renner Berthing <kernel@esmil.dk> Cc: Gerd Hoffmann <kraxel@redhat.com>
* tag 'drm-misc-fixes-2017-11-13' of git://anongit.freedesktop.org/drm/drm-misc:
drm/rockchip: analogix_dp: Use mutex rather than spinlock
Dave Airlie [Mon, 13 Nov 2017 19:18:21 +0000 (05:18 +1000)]
Merge tag 'drm-intel-next-fixes-2017-11-10' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
drm/i915 fixes for v4.15
* tag 'drm-intel-next-fixes-2017-11-10' of git://anongit.freedesktop.org/drm/drm-intel:
drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU
drm/i915: Move init_clock_gating() back to where it was
drm/i915: Prune the reservation shared fence array
drm/i915: Idle the GPU before shinking everything
drm/i915: Lock llist_del_first() vs llist_del_all()
drm/i915: Calculate ironlake intermediate watermarks correctly, v2.
drm/i915: Disable lazy PPGTT page table optimization for vGPU
drm/i915/execlists: Remove the priority "optimisation"
drm/i915: Filter out spurious execlists context-switch interrupts
Dave Airlie [Mon, 13 Nov 2017 19:17:23 +0000 (05:17 +1000)]
Merge tag 'drm-misc-fixes-2017-11-02' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
Driver Changes:
- qxl: Use a shadow bo as primary and blit to it to fix flicker (Gerd)
* tag 'drm-misc-fixes-2017-11-02' of git://anongit.freedesktop.org/drm/drm-misc:
qxl: alloc & use shadow for dumb buffers
drm/qxl: replace QXL_INFO with DRM_DEBUG_DRIVER
Michel Thierry [Mon, 13 Nov 2017 17:36:28 +0000 (09:36 -0800)]
drm/i915: There is only one fault register from GEN8 onwards
Until Haswell/Baytrail, the hardware used to have a per engine fault
register (e.g. 0x4094 - render fault register, 0x4194 - media fault
register and so on). But since Broadwell, all these registers were
combined into a singe one and the engine id stored in bits 14:12.
Not only we should not been reading (and writing to) registers that do
not exist, in platforms with VCS2 (SKL), the address that would belong
this engine (0x4494, VCS2_HW = 4) is already assigned to other register.
v2: use less controversial function names (Chris).
v3: make non-exported functions static, remove now obsolete check for
engine presence before posting_read (Chris).
References: IHD-OS-BDW-Vol 2c-11.15, page 75.
References: IHD-OS-SKL-Vol 2c-05.16, page 350. Signed-off-by: Michel Thierry <michel.thierry@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20171113173628.11689-1-michel.thierry@intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Michel Thierry [Sat, 11 Nov 2017 00:44:47 +0000 (16:44 -0800)]
drm/i915: Clear per-engine fault register as early as possible
From gen6, the hardware tracks address lookup failures and we should
clear those registers upon startup to prevent false positives. However,
this was happening before we have the engines defined (intel_uncore_init())
and the for_each_engine loop was just a nop. The earliest we can call
this is inside intel_engines_init_mmio().
drm/i915: expose command stream timestamp frequency to userspace
We use to have this fixed per generation, but starting with CNL userspace
cannot tell just off the PCI ID. Let's make this information available. This
is particularly useful for performance monitoring where much of the
normalization work is done using those timestamps (this include pipeline
statistics in both GL & Vulkan as well as OA reports).
v2: Use variables for 24MHz/19.2MHz values (Ewelina)
Renamed function & coding style (Sagar)
v3: Fix frequency read on Broadwell (Sagar)
Fix missing divide by 4 on <= gen4 (Sagar)
drm/i915: Handle adjust better in intel_pipe_config_compare
Some parameters use CHECK_BOOL, but should really use
CHECK_BOOL_INCOMPLETE. We cannot currently check whether
the inherited infoframes and audio are set up correctly.
The flag just tells us IPS can be enabled, if the primary plane
is not enabled it means IPS might not be. This never triggered
in CI because we don't have a haswell ULT there, but can be
reproduced easily with kms_atomic_transitions.plane-all-modeset-transition
Oscar Mateo [Wed, 8 Nov 2017 23:59:44 +0000 (15:59 -0800)]
drm/i915: Remove Gen9 WAs with no effect
GEN8_CONFIG0 (0xD00) is a protected by a lock (bit 31) which is set by
the BIOS, so there is no way we can enable the three chicken bits
mandated by the WA (the BIOS should be doing it instead).
v2: Rebased
v3: Standalone patch
References: e3a7d08258e6 ("drm/i915/gen9: Enable must set chicken bits in config0 reg") Signed-off-by: Oscar Mateo <oscar.mateo@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1510185589-9100-2-git-send-email-oscar.mateo@intel.com Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Now that we always execute a context switch upon module load, there is
no need to queue a delayed task for doing so. The purpose of the delayed
task is to enable GT powersaving, for which we need the HW state to be
valid (i.e. having loaded a context and initialised basic state). We
used to defer this operation as historically it was slow (due to slow
register polling, fixed with commit 4ccb9e66e10a ("drm/i915: Use a hybrid
scheme for fast register waits")) but now we have a requirement to save
the default HW state.
v2: Load the kernel context (to provide the power context) upon resume.
drm/i915: Update watermark state correctly in sanitize_watermarks
We no longer use intel_crtc->wm.active for watermarks any more,
which was incorrect. But this uncovered a bug in sanitize_watermarks(),
which meant that we wrote the correct watermarks, but the next
update would still use the wrong hw watermarks for calculating.
This caused all further updates to fail with -EINVAL and the
log would reveal an error like the one below:
[ 10.043902] [drm:ilk_validate_wm_level.part.8 [i915]] Sprite WM0 too large 56 (max 0)
[ 10.043960] [drm:ilk_validate_pipe_wm [i915]] LP0 watermark invalid
[ 10.044030] [drm:intel_crtc_atomic_check [i915]] No valid intermediate pipe watermarks are possible
Chris Wilson [Fri, 10 Nov 2017 14:26:34 +0000 (14:26 +0000)]
drm/i915: Stop caching the "golden" renderstate
As we now record the default HW state and so only emit the "golden"
renderstate once to prepare the HW, there is no advantage in keeping the
renderstate batch around as it will never be used again.
Chris Wilson [Fri, 10 Nov 2017 14:26:33 +0000 (14:26 +0000)]
drm/i915: Record the default hw state after reset upon load
Take a copy of the HW state after a reset upon module loading by
executing a context switch from a blank context to the kernel context,
thus saving the default hw state over the blank context image.
We can then use the default hw state to initialise any future context,
ensuring that each starts with the default view of hw state.
v2: Unmap our default state from the GTT after stealing it from the
context. This should stop us from accidentally overwriting it via the
GTT (and frees up some precious GTT space).
Chris Wilson [Fri, 10 Nov 2017 14:26:32 +0000 (14:26 +0000)]
drm/i915: Mark the context state as dirty/written
In the next few patches, we will want to both copy out of the context
image and write a valid image into a new context. To be completely safe,
we should then couple in our domain tracking to ensure that we don't
have any issues with stale data remaining in unwanted cachelines.
Historically, we omitted the .write=true from the call to set-gtt-domain
in i915_switch_context() in order to avoid a stall between every request
as we would want to wait for the previous context write from the gpu.
Since then, we limit the set-gtt-domain to only occur when we first bind
the vma, so once in use we will never stall, and we are sure to flush
the context following a load from swap.
Equally we never applied the lessons learnt from ringbuffer submission
to execlists; so time to apply the flush of the lrc after load as well.
Chris Wilson [Fri, 10 Nov 2017 14:26:31 +0000 (14:26 +0000)]
drm/i915: Inline intel_modeset_gem_init()
intel_modeset_gem_init() now only sets up the legacy overlay, so let's
remove the function and call the setup directly during driver load. This
should help us find a better point in the initialisation sequence for it
later.
Chris Wilson [Fri, 10 Nov 2017 14:26:30 +0000 (14:26 +0000)]
drm/i915: Move intel_init_clock_gating() to i915_gem_init()
Despite its name intel_init_clock_gating applies both display clock gating
workarounds; GT mmio workarounds and the occasional GT power context
workaround. Worse, sometimes it includes a context register workaround
which we need to apply before we record the default HW state for all
contexts.
Chris Wilson [Fri, 10 Nov 2017 14:26:29 +0000 (14:26 +0000)]
drm/i915: Move GT powersaving init to i915_gem_init()
GT powersaving is tightly coupled to the request infrastructure. To
avoid complications with the order of initialisation in the next patch
(where we want to send requests to hw during GEM init) move the
powersaving initialisation into the purview of i915_gem_init().
Chris Wilson [Fri, 10 Nov 2017 14:26:28 +0000 (14:26 +0000)]
drm/i915: Force the switch to the i915->kernel_context
In the next few patches, we will have a hard requirement that we emit a
context-switch to the perma-pinned i915->kernel_context (so that we can
save the HW state using that context-switch). As the first context
itself may be classed as a kernel context, we want to be explicit in our
comparison. For an extra-layer of finesse, we can check the last
unretired context on the engine; as well as the last retired context
when idle.
v2: verbose verbosity
v3: Always force the switch, even when the engine is idle, and update
the assert that this happens before suspend.
Tvrtko Ursulin [Fri, 10 Nov 2017 14:26:27 +0000 (14:26 +0000)]
drm/i915: Define an engine class enum for the uABI
We want to be able to report back to userspace details about an engine's
class, and in return for userspace to be able to request actions
regarding certain classes of engines. To isolate the uABI from any
variations between hw generations, we define an abstract class for the
engines and internally map onto the hw.
v2: Remove MAX from the uABI; keep it internal if we need it, but don't
let userspace make the mistake of using it themselves.
v3: s/OTHER/INVALID/
The use of OTHER is ill-defined, so remove it from the uABI as any
future new type of engine can define a class to suit it. But keep a
reserved value for an invalid class, so that we can always
unambiguously express when something doesn't belong to the
classification.
Chris Wilson [Fri, 10 Nov 2017 11:25:50 +0000 (11:25 +0000)]
drm/i915: Restore the wait for idle engine after flushing interrupts
So it appears that commit 662091471095 ("drm/i915: Bump wait-times for
the final CS interrupt before parking") was a little over optimistic in
its belief that it had successfully waited for all residual activity on
the engines before parking. Numerous sightings in CI since then of
on Braswell, which indicates that the engine just needs that little bit
longer after flushing the tasklet to settle. So give it a few more
milliseconds before declaring an err and applying the emergency brake.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103479 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171110112550.28909-1-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Hans de Goede [Thu, 19 Oct 2017 11:16:20 +0000 (13:16 +0200)]
drm/i915: Acquire PUNIT->PMIC bus for intel_uncore_forcewake_reset()
intel_uncore_forcewake_reset() does forcewake puts and gets as such
we need to make sure that no-one tries to access the PUNIT->PMIC bus
(on systems where this bus is shared) while it runs, otherwise bad
things happen.
Normally this is taken care of by the i915_pmic_bus_access_notifier()
which does an intel_uncore_forcewake_get(FORCEWAKE_ALL) when some other
driver tries to access the PMIC bus, so that later forcewake gets are
no-ops (for the duration of the bus access).
But intel_uncore_forcewake_reset gets called in 3 cases:
1) Before registering the pmic_bus_access_notifier
2) After unregistering the pmic_bus_access_notifier
3) To reset forcewake state on a GPU reset
In all 3 cases the i915_pmic_bus_access_notifier() protection is
insufficient.
This commit fixes this race by calling iosf_mbi_punit_acquire() before
calling intel_uncore_forcewake_reset(). In the case where it is called
directly after unregistering the pmic_bus_access_notifier, we need to
hold the punit-lock over both calls to avoid a race where
intel_uncore_fw_release_timer() may execute between the 2 calls.
Hans de Goede [Thu, 19 Oct 2017 11:16:19 +0000 (13:16 +0200)]
x86/platform/intel/iosf_mbi: Add unlocked PMIC bus access notifier unregister
For race free unregistration drivers may need to acquire PMIC bus access
through iosf_mbi_punit_acquire() and then (un)register the notifier without
dropping the lock.
This commit adds an unlocked variant of
iosf_mbi_unregister_pmic_bus_access_notifier for this use case.
Chris Wilson [Tue, 7 Nov 2017 10:20:03 +0000 (10:20 +0000)]
drm/i915: Move irqs enabled assertion deeper for mock breadcrumbs
In order to allow the mock breadcrumbs tests to run without device irqs
being enabled, move the intel_irqs_enabled() assert deeper to just
before we commit to enabling the HW irq.
v2: Add a FIXME explaining that placing the assertion so deep is not
ideal, but a compromise for mock breadcrumbs.
Chris Wilson [Fri, 10 Nov 2017 10:11:10 +0000 (10:11 +0000)]
drm/i915/selftests: Reduce the volume of the timeout message
Originally it was anticipated that timeouts would be a rare event, and
so merit a warning that the test was incomplete. However, for igt we
keep the timeout low, and hitting the timeout is intentional. It no
longer necessitates a warning, but to be expected.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171110101110.12042-1-chris@chris-wilson.co.uk Reviwed-by: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Chris Wilson [Thu, 9 Nov 2017 21:34:50 +0000 (21:34 +0000)]
drm/i915: Mark up i915_vma_unbind() as a potential sleeper
Whenever we want to unbind a vma, we must wait on all GPU activity to
complete first. (This is what gives us the ability to do fine grained
eviction and purging by only having to wait on the VMA that we need to
unbind to proceed; though if pushed we can make it a rule that we are
only allowed to unbind already idle VMA and move the burden of the work
and organising the sleep onto the caller.) Currently, we might only
sleep if the vma is still active on the GPU, but in principle
i915_vma_unbind() always implies a sleep, so mark it up with a
might_sleep().
Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=103638 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: Matthew Auld <matthew.william.auld@gmail.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171109213450.13875-2-chris@chris-wilson.co.uk
Chris Wilson [Thu, 9 Nov 2017 21:34:49 +0000 (21:34 +0000)]
drm/i915: Mark vm_free_page() as a potential sleeper agent
vm_free_page() may call down into set_pages_array_wb() (which itself
sleeps, on x86 at least) but only if on !llc and the caches overflow.
Since this is unlikely, we only rarely trigger the error in practice,
and so to make CI detection of this sleeping bug possible we want to
mark the common vm_free_page() as a potential sleep.
Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=103638 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: Matthew Auld <matthew.william.auld@gmail.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171109213450.13875-1-chris@chris-wilson.co.uk
Chris Wilson [Thu, 9 Nov 2017 14:30:19 +0000 (14:30 +0000)]
drm/i915: Use trace_printk to provide a death rattle for GEM
Trying to enable printk debugging for GEM is fraught with the issue of
spam; interactions with HW are very frequent and often boring. However,
one instance where they are not so boring is just before a BUG; here
ftrace provides a facility to dump its ringbuffer on an oops. So for CI
let's enable trace_printk() to capture the last exchanges with HW as a
death rattle.
Ville Syrjälä [Tue, 31 Oct 2017 20:51:22 +0000 (22:51 +0200)]
drm/i915: Clean up PPS code calling conventions
No need to pass 'dev' or 'dev_priv' when the function already takes
'intel_dp'. Also let's prefer passing 'dev_priv' instead of 'dev'
when we have to pass one or the other.
Ville Syrjälä [Thu, 9 Nov 2017 15:24:34 +0000 (17:24 +0200)]
drm/i915: Nuke intel_digital_port->port
Remove intel_digital_port->port and replace its users with
intel_encoder->port. intel_encoder->port is a superset of
intel_digital_port->port, and it works correctly even for
MST encoders.
v2: Eliminate a few dp_to_dig_port()->base.port cases too (DK)
Performed with cocci:
@@
@@
struct intel_digital_port {
...
- enum port port;
...
}
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