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2015-02-11drm/i915: Clamp efficient frequency to valid rangeTom O'Rourke
The efficient frequency (RPe) should stay in the range RPn <= RPe <= RP0. The pcode clamps the returned value internally on Broadwell but not on Haswell. Fix for missing range check in commit 93ee29203f506582cca2bcec5f05041526d9ab0a Author: Tom O'Rourke <Tom.O'Rourke@intel.com> Date: Wed Nov 19 14:21:52 2014 -0800 drm/i915: Use efficient frequency for HSW/BDW Reference: http://lists.freedesktop.org/archives/intel-gfx/2015-February/059802.html Reported-by: Michael Auchter <a@phire.org> Suggested-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org # v3.19 Signed-off-by: Tom O'Rourke <Tom.O'Rourke@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-02-11drm/i915: Really ignore long HPD pulses on eDPVille Syrjälä
Return IRQ_HANDLED from intel_dp_hpd_pulse() to properly ignore the long HPD pulse on eDP to avoid the never ending VDD off->HPD->VDD on->VDD off->HPD... cycle. This fixes a regression intoduced by commit b2c5c181ed18490648a02f8c7d562a3b9e8b96de Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Fri Jan 23 06:00:31 2015 +0100 drm/i915: Use symbolic irqreturn for ->hpd_pulse Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Jani Nikula <jani.nikula@linux.intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-02-09drm/i915: Correct the base value while updating LP_OUTPUT_HOLD in MIPI_PORT_CTRLShobhit Kumar
LP_OUTPUT_HOLD is only in MIPI_PORT_CTRL(PORT_A) even for PORT_C in case of dual link. In the dual link implementation, the bit is correctly set or unset for hardcoded PORT_A, but for bit update the register base value is read by using MIPI_PORT_CTRL(port) in a loop. The second iteration will read base value from PORT_C and program for PORT_A. Mostly in case of dual link all other bit values should be same, but logically we should read from PORT_A. So hardcode to read initial value from PORT_A as well. Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-02-09drm/i915: Insert a command barrier on BLT/BSD cache flushesChris Wilson
This looked like an odd regression from commit ec5cc0f9b019af95e4571a9fa162d94294c8d90b Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Thu Jun 12 10:28:55 2014 +0100 drm/i915: Restrict GPU boost to the RCS engine but in reality it undercovered a much older coherency bug. The issue that boosting the GPU frequency on the BCS ring was masking was that we could wake the CPU up after completion of a BCS batch and inspect memory prior to the write cache being fully evicted. In order to serialise the breadcrumb interrupt (and so ensure that the CPU's view of memory is coherent) we need to perform a post-sync operation in the MI_FLUSH_DW. v2: Fix all the MI_FLUSH_DW (bsd plus the duplication in execlists). Also fix the invalidate_domains mask in gen8_emit_flush() for ring != VCS. Testcase: gpuX-rcs-gpu-read-after-write Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org Acked-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-02-09drm/i915: Drop vblank wait from intel_dp_link_downDaniel Vetter
Nothing in Bspec seems to indicate that we actually needs this, and it looks like can't work since by this point the pipe is off and so vblanks won't really happen any more. Note that Bspec mentions that it takes a vblank for this bit to change, but _only_ when enabling. Dropping this code quenches an annoying backtrace introduced by the more anal checking since commit 51e31d49c89055299e34b8f44d13f70e19aaaad1 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Mon Sep 15 12:36:02 2014 +0200 drm/i915: Use generic vblank wait Note: This fixes the fallout from the above commit, but does not address the shortcomings of the IBX transcoder select workaround implementation discussed during review [1]. [1] http://mid.gmane.org/87y4o7usxf.fsf@intel.com Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86095 Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: stable@vger.kernel.org # 3.19 Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-02-09drm/i915: Squelch overzealous uncore reset WARN_ONMika Kuoppala
We added this WARN_ON to guard against using uninitialized forcewake domains. But forgot blissfully that not all gens have forcewake domains in the first place. v2: Move WARN_ON to fw_domains_init (Chris) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88911 Tested-by: Ding Heng <hengx.ding@intel.com> (v1) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> [Jani: add comment above WARN_ON as suggested by Chris] Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-02-09drm/i915: Take runtime pm reference on hangcheck_infoMika Kuoppala
We read the coherent current seqno and actual head from ring. For hardware access we need to take runtime_pm reference. Get hardware specific values with runtime reference held and print them first to emphasize hw state vs bookkeepping. v2: Reorder output according to hw access (Chris) remove superfluous locking (Daniel) Testcase: igt/pm_rpm/debugfs-read Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88910 Tested-by: Ding Heng <hengx.ding@intel.com> (v1) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-02-09drm/i915: Correct the IOSF Dev_FN field for IOSF transfersShobhit Kumar
As per the specififcation, the SB_DevFn is the PCI_DEVFN of the target device and not the source. So PCI_DEVFN(2,0) is not correct. Further the port ID should be enough to identify devices unless they are MFD. The SB_DevFn was intended to remove ambiguity in case of these MFD devices. For non MFD devices the recommendation for the target device IP was to ignore these fields, but not all of them followed the recommendation. Some like CCK ignore these fields and hence PCI_DEVFN(2, 0) works and so does PCI_DEVFN(0, 0) as it works for DPIO. The issue came to light because of GPIONC which was not getting programmed correctly with PCI_DEVFN(2, 0). It turned out that this did not follow the recommendation and expected 0 in this field. In general the recommendation is to use SB_DevFn as PCI_DEVFN(0, 0) for all devices except target PCI devices. Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: stable@vger.kernel.org Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-02-05drm/i915: Prevent use-after-free in invalidate_range_start callbackMichał Winiarski
It's possible for invalidate_range_start mmu notifier callback to race against userptr object release. If the gem object was released prior to obtaining the spinlock in invalidate_range_start we're hitting null pointer dereference. Testcase: igt/gem_userptr_blits/stress-mm-invalidate-close Testcase: igt/gem_userptr_blits/stress-mm-invalidate-close-overlap Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Michał Winiarski <michal.winiarski@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org [Jani: added code comment suggested by Chris] Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-01-30drm/i915: Update DRIVER_DATE to 20150130Daniel Vetter
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-30drm/i915: Use pipe_config's cpu_transcoder for reading encoder hw stateAnder Conselvan de Oliveira
The get_config() functions for ddi and dp_mst, used to read the value of cpu_transcoder from the crtc->config instead of the state passed as an argument. On the hardware state readout path, that happens to work since the proper value is written to it before encoder->get_config() is called. However, in the check_crtc() path, the state will be read from the cpu_transcoder in the software tracking, instead of the one just read out from hw. Using the field in the supplied intel_crtc_state should do the right thing in both cases. v2: Fix intel_ddi_get_config() too. (Ander) Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-30drm/i915: Fix a use-after-free in intel_execlists_retire_requestsNick Hoath
Remove request from list before unreferencing it, in case it's actually the only reference. (Found by Tvrtko Ursulin) This issue has been most likely introduced in commit 6d3d8274bc45de4babb62d64562d92af984dd238 Author: Nick Hoath <nicholas.hoath@intel.com> Date: Thu Jan 15 13:10:39 2015 +0000 drm/i915: Subsume intel_ctx_submit_request in to drm_i915_gem_request Signed-off-by: Nick Hoath <nicholas.hoath@intel.com> Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-30drm/i915: Split shared dpll setup out of __intel_set_mode()Ander Conselvan de Oliveira
This simplifies __intel_set_mode() a little. Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-30drm/i915: Don't do posting reads on getting forcewakeMika Kuoppala
The checking for ack and also any subsequent mmio access will serialize with setting the forcewake bit. Drop the posting read as superfluous. Note that in the put side we still want to keep the posting read as it will ensure that the hw sees our forcewake release in a timely manner and doesn't keep the hw powered up. Comment from Chris: On Wed, Jan 28, 2015 at 05:54:14PM +0200, Mika Kuoppala wrote: > Ville Syrjälä <ville.syrjala@linux.intel.com> writes: > > IIRC the posting read from same cache line actually fixed real bugs. So > > I'm a bit worried about dropping them. But I suppose it's possible only > > the _put side was important for those bugs. > > I found these: > > commit 6af2d180f82151cf3d58952e35a4f96e45bc453a > Author: Daniel Vetter <daniel.vetter@ffwll.ch> > Date: Thu Jul 26 16:24:50 2012 +0200 > > drm/i915: fix forcewake related hangs on snb > > commit 8dee3eea3ccd3b6c00a8d3a08dd715d6adf737dd > Author: Ben Widawsky <ben@bwidawsk.net> > Date: Sat Sep 1 22:59:50 2012 -0700 > > drm/i915: Never read FORCEWAKE > > https://bugs.freedesktop.org/show_bug.cgi?id=51738 > https://bugs.freedesktop.org/show_bug.cgi?id=52424 > > The snb here seems to survive gem_dummy_reloc_loop and > gem_ring_sync_loop in here with the get side posting removed. Note that we kept the once associated with #52424, but judging by my comments in #51738 the posting read is just a band aid anyway as a full mb() itself was not adequate. Suggested-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> [danvet: paste relevant review discussion in.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-30drm/i915: Do uncore early sanitize after domain initMika Kuoppala
intel_uncore_early_sanitize() will reset the forcewake registers. When forcewake domains were introduced, the domain init was done after the sanitization of the forcewake registers. And as the resetting of registers use the domain accessors, we tried to reset the forcewake registers with unitialized forcewake domains and failed. Fix this by sanitizing after all the domains have been initialized. Do per domain clearing of forcewake register on domain init so that IVB can do early access to ECOBUS do determine the final configuration. This regression was introduced in commit 05a2fb157e44a53c79133805d30eaada43911941 Author: Mika Kuoppala <mika.kuoppala@linux.intel.com> Date: Mon Jan 19 16:20:43 2015 +0200 drm/i915: Consolidate forcewake code v2: Carve out ellc detect, fw_domain_reset for ivb/ecobus (Chris) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88805 Cc: Chris Wilson <chris@chris-wilson.co.uk> Reported-by: Olof Johansson <olof@lixom.net> Tested-by: Darren Hart <dvhart@linux.intel.com> (v1) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-30drm/i915: Handle CHV in vlv_set_rps_idle()Ville Syrjälä
Move the CHV check into vlv_set_rps_idle() to simplify the caller a bit. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-29drm/i915: Remove nested work in gpu error handlingMika Kuoppala
Now when we declare gpu errors only through our own dedicated hangcheck workqueue there is no need to have a separate workqueue for handling the resetting and waking up the clients as the deadlock concerns are no more. The only exception is i915_debugfs::i915_set_wedged, which triggers error handling through process context. However as this is only used through test harness it is responsibility for test harness not to introduce hangs through both debug interface and through hangcheck mechanism at the same time. Remove gpu_error.work and let the hangcheck work do the tasks it used to. v2: Add a big warning sign into i915_debugfs::i915_set_wedged (Chris) Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-29drm/i915/documentation: Add intel_uncore.c to drm.tmplMika Kuoppala
Include intel_uncore.c in template for it to include d documentation for intel_uncore_forcewake_get and *_put. Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-29drm/i915/dsi: remove intel_dsi_cmd.c and the unused functions thereinJani Nikula
The removed functions can be resurrected in intel_dsi.c as need arises. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-29drm/i915/dsi: move dpi_send_cmd() to intel_dsi.c and make it staticJani Nikula
No functional changes. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-29drm/i915/dsi: remove old read/write functions in favor of new stuffJani Nikula
All of these are replaced by the drm core mipi dsi functions. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-29drm/i915/dsi: make the vbt panel driver use mipi_dsi_device for transfersJani Nikula
Use the drm core interfaces in preparation of removing our homebrew. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-29drm/i915/dsi: add drm mipi dsi host supportJani Nikula
Add basic support for using the drm mipi dsi framework for DSI. We don't use device tree which is pretty much required by mipi_dsi_host_register and friends, and we don't have the kind of device model the functions expect either. So we cheat and use it as a library to abstract what we need: a nice, clean interface for DSI transfers. This means we will have to be careful with what functions we call, as the driver model devices in mipi_dsi_host and mipi_dsi_device will *not* be initialized. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-29drm/i915/dsi: switch to drm_panel interfaceJani Nikula
Replace intel_dsi_device and intel_dsi_dev_ops with drm_panel and drm_panel_funcs. They are adequate for what we have now, and if we end up needing more than this we should improve drm_panel. This will keep us better aligned with the drm core infrastructure. The panel driver initialization changes a bit. It still remains hideous, but fixing that is beyond the scope here. v2: extend mode config mutex to cover drm_panel_get_modes (Shobhit) vbt_panel->intel_dsi = intel_dsi in vbt panel init (Shobhit) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-28drm/i915/skl: Enabling PSR on SkylakeSonika Jindal
Mainly taking care of some register offsets, otherwise things are similar to hsw. Also, programming ddi aux to use hardcoded values for psr data select. v2: introduce EDP_PSR_AUX_BASE macro (Chris) v3: Moving to HW tracking for SKL+ platforms, so activating source psr during psr_enabling and then avoiding psr entries and exits for each frontbuffer updates. v4: Using SKL DDI AUX regs instead of changing PSR_AUX regs definition (Rodrigo) Signed-off-by: Sonika Jindal <sonika.jindal@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> [danvet: Drop the hunks to short-circuit sw tracking: We'd need to push this down one level, and I don't fully trust the test coverage yet to do so. So much prefer we pick a whitelist approach for the cases we know work correctly.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-28Revert "drm/i915: Fix mutex->owner inspection race under DEBUG_MUTEXES"Chris Wilson
The core fix was applied in commit a63b03e2d2477586440741677ecac45bcf28d7b1 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Tue Jan 6 10:29:35 2015 +0000 mutex: Always clear owner field upon mutex_unlock() (note the absence of stable@ tag) so we can now revert our band-aid commit 226e5ae9e5f910 for -next. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> 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>
2015-01-28drm/i915: Be consistent on printing seqnosMika Kuoppala
We have had %x and %u intermixed. Bring everything in line and use %x Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-28drm/i915: Display current hangcheck status in debugfsChris Wilson
For example, /sys/kernel/debug/dri/0/i915_hangcheck_info: Hangcheck active, fires in 15887800ms render ring: seqno = -4059 [current -583] action = 2 score = 0 ACTHD = 1ee8 [current 21f980] max ACTHD = 0 v2: Include expiration ETA. Can anyone spot a problem? v3: Convert for workqueued hangcheck (Mika) v4: Print seqnos as unsigned ints (Ville) v5: Print seqnos as hex (Chris) Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com) (v2) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (v2) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-28drm/i915: Convert hangcheck from a timer into a delayed work itemChris Wilson
When run as a timer, i915_hangcheck_elapsed() must adhere to all the rules of running in a softirq context. This is advantageous to us as we want to minimise the risk that a driver bug will prevent us from detecting a hung GPU. However, that is irrelevant if the driver bug prevents us from resetting and recovering. Still it is prudent not to rely on mutexes inside the checker, but given the coarseness of dev->struct_mutex doing so is extremely hard. Give in and run from a work queue, i.e. outside of softirq. v2: Use own workqueue to avoid deadlocks (Daniel) Cleanup commit msg and add comment to i915_queue_hangcheck() (Chris) Cc: Jani Nikula <jani.nikula@intel.com> Cc: Daniel Vetter <dnaiel.vetter@ffwll.chm> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (v1) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> [danvet: Remove accidental kerneldoc comment starter, to appease the 0 day builder.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-28agp/intel: Serialise after GTT updatesChris Wilson
An interesting bug occurs on Pineview through which the root cause is that the writes of the PTE values into the GTT is not serialised with subsequent memory access through the GTT (when using WC updates of the PTE values). This is despite there being a posting read after the GTT update. However, by changing the address of the posting read, the memory access is indeed serialised correctly. Whilst we are manipulating the memory barriers, we can remove the compiler :memory restraint on the intermediate PTE writes knowing that we explicitly perform a posting read afterwards. v2: Replace posting reads with explicit write memory barriers - in particular this is advantages in case of single page objects. Update comments to mention this issue is only with WC writes. Testcase: igt/gem_exec_big #pnv Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88191 Tested-by: huax.lu@intel.com (v1) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drivers: gpu: drm: i915: intel_fifo_underrun.c: Fix a typo in commentKumar Amit Mehta
The comment for intel_cpu_fifo_underrun_irq_handler() is not consistent with the code and the rest of the comment for this routine. This patch fixes this typo in comment. Signed-off-by: Kumar Amit Mehta <gmate.amit@gmail.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915: Add i915.nuclear_pageflip command line param to force atomic (v4)Matt Roper
We don't have full atomic modeset support yet, but the "nuclear pageflip" subset of functionality (i.e., plane operations only) should be ready. Allow the user to force atomic on for debug purposes, or for fixed-purpose embedded devices that will only use atomic for plane updates. The term 'nuclear' is used here instead of 'atomic' to make it clear that this doesn't allow full atomic modeset support, just a (very useful) subset of the atomic functionality. We'll drop the kernel parameter and unconditionally enable atomic in a future patch once all of the necessary pieces are in. v2: - Use module_param_named_unsafe() (Daniel) - Simplify comment on DRIVER_ATOMIC guard (Daniel) v3: - Make the parameter "nuclear_pageflip" rather than just "nuclear" for clarity. (Ander) v4: - Make the internal variable "nuclear_pageflip" as well as the command-line option. (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>
2015-01-27drm/i915: Switch plane properties to full atomic helper.Matt Roper
This will exercise our atomic pipeline for legacy property updates. 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>
2015-01-27drm/i915: Add crtc state duplication/destruction functionsMatt Roper
The atomic helpers need these to prepare a new state object when starting a new atomic operation. 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>
2015-01-27drm/i915: Add atomic_get_property entrypoint for connectors (v2)Matt Roper
Even though we only support atomic plane updates at the moment, we still need to add an .atomic_get_property() entrypoint for connectors before we allow the driver to flip on the DRIVER_ATOMIC bit. As soon as that bit gets set, the DRM core will start adding atomic connector properties (in addition to the plane properties we care about at the moment), so we need to be able to handle the new way the DRM core will interact with us. For simplicity, we just lookup driver-specific connector properties in the usual shadow array maintained by the core. Once we get real atomic modeset support for crtc's and planes, this code should be re-written to pull the data out of crtc/connector state structures. v2: Fix intel_dvo and intel_dsi that I missed on the first pass (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>
2015-01-27drm/i915: Setup dummy atomic state for connectors (v3)Matt Roper
We want to enable/test plane updates via the atomic interface, but as soon as we flip DRIVER_ATOMIC on, the DRM core will take some atomic codepaths to lookup properties during drmModeGetConnector() and some of those codepaths unconditionally dereference connector->state (specifically when looking up the CRTC ID property in drm_atomic_connector_get_property()). Create a dummy connector state for each connector at init time to ensure the DRM core doesn't try to dereference a NULL connector->state. The actual connector properties will never be updated or contain useful information, but since we're doing this specifically for testing/debug of the plane operations (and only when a specific kernel module option is given), that shouldn't really matter. Once we start creating connector states, the DRM core will want to be able to clean them up for us. We also need to hook up the destruction entrypoint to the core's helper. v2: Squash in the patch to set the state destruction hook (Ander & Bob) v3: Only create dummy connector states when we're actually faking atomic support. (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>
2015-01-27drm/i915: Add main atomic entrypoints (v2)Matt Roper
Add the top-level atomic entrypoints for check/commit. These won't get called yet; we still need to either enable the atomic ioctl or switch to using the non-transitional atomic helpers for legacy operations. v2: - Use plane->pipe rather than plane->possible_crtcs while ensuring that only a single CRTC is in use. Either way will work fine since i915 drm_plane's are always tied to a single CRTC, but plane->pipe is slightly more intuitive. (Ander) - Simplify crtc/connector checking logic. (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>
2015-01-27drm/i915: Add .atomic_{get, set}_property() entrypoints to planesMatt Roper
When we flip on the DRIVER_ATOMIC bit, the DRM core will start calling this entrypoint to set and lookup driver-specific plane property values, rather than maintaining a shadow copy in object->properties. Note that although we add these functions to the plane vtable, they will not yet be called. Future patches that switch our .set_property() handler and/or enable full atomic functionality are required before these code paths will be executed. 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>
2015-01-27drm/i915: Consolidate plane handler vtablesMatt Roper
All of the previous refactoring/consolidation of plane code has resulted in intel_primary_plane_funcs, intel_cursor_plane_funcs, and intel_sprite_plane_funcs being identical. Replace all of these with a single 'intel_plane_funcs' vtable for simplicity. 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>
2015-01-27drm/i915: Move rotation from intel_plane to drm_plane_stateMatt Roper
Runtime state that can be manipulated via properties should now go in intel_plane_state/drm_plane_state so that it can be tracked as part of an atomic transaction. We add a new 'intel_create_plane_state' function so that the proper initial value for this property (and future properties) doesn't have to be repeated at each plane initialization site. v2: - Stick rotation in common drm_plane_state rather than intel_plane_state. (Daniel) - Add intel_create_plane_state() to consolidate the places where we have to set initial state values. (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>
2015-01-27drm/i915: Use intel_gpu_freq() and intel_freq_opcode()Ville Syrjälä
Replace all the vlv_gpu_freq(), vlv_freq_opcode(), *GT_FREQUENCY_MULTIPLIER, and /GT_FREQUENCY_MULTIPLIER instances with intel_gpu_freq() and intel_freq_opcode() calls. Most of the change was performed with the following semantic patch: @@ expression E; @@ ( - E * GT_FREQUENCY_MULTIPLIER + intel_gpu_freq(dev_priv, E) | - E *= GT_FREQUENCY_MULTIPLIER + E = intel_gpu_freq(dev_priv, E) | - E /= GT_FREQUENCY_MULTIPLIER + E = intel_freq_opcode(dev_priv, E) | - do_div(E, GT_FREQUENCY_MULTIPLIER) + E = intel_freq_opcode(dev_priv, E) ) @@ expression E1, E2; @@ ( - vlv_gpu_freq(E1, E2) + intel_gpu_freq(E1, E2) | - vlv_freq_opcode(E1, E2) + intel_freq_opcode(E1, E2) ) @@ expression E1, E2, E3, E4; @@ ( - if (IS_VALLEYVIEW(E1)) { - E2 = intel_gpu_freq(E3, E4); - } else { - E2 = intel_gpu_freq(E3, E4); - } + E2 = intel_gpu_freq(E3, E4); | - if (IS_VALLEYVIEW(E1)) { - E2 = intel_freq_opcode(E3, E4); - } else { - E2 = intel_freq_opcode(E3, E4); - } + E2 = intel_freq_opcode(E3, E4); ) One hunk was manually undone as intel_gpu_freq() ended up calling itself. Supposedly it would be possible to exclude certain functions via !=~, but I couldn't get that to work. Also the removal of vlv_gpu_freq() and vlv_opcode_freq() compat wrappers was done manually. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915: Add intel_gpu_freq() and intel_freq_opcode()Ville Syrjälä
Rename the vlv_gpu_freq() and vlv_freq_opecode() functions to have an intel_ prefix, and handle non-VLV/CHV platforms in them as well. Leave the vlv_ names around for now since they're currently used. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915: Add gt_act_freq_mhz sysfs fileVille Syrjälä
Currently the 'gt_cur_freq_mhz' file shows the actual GPU frequency on VLV/CHV, and the last requested frequency on other platforms. Change the meaning of the file on VLV/CHV to follow the the other platforms, and introduce a new file 'gt_act_freq_mhz' which shows the actual frequency on all platforms. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915: Update PMINTRMSK on VLV/CHV after sysfs min/max freq changeVille Syrjälä
Currently we don't call valleyview_set_rps() when changing the min/max limits through sysfs if the current frequency is still within the new limits. However that means we sometimes forget to update PMINTRMSK. Eg. if the current frequency is at the old minimum, and then we reduce the minum further we should then enable the 'down' interrupts in PMINTRMSK but currently we don't. Fix it up by always calling valleyview_set_rps() (just like we do for !vlv/chv platforms). This also allows the code to be simplified a bit. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915: DRRS calls based on frontbufferVandana Kannan
Calls have been added to invalidate/flush DRRS whenever invalidate/flush is called as part of frontbuffer tracking. Apart from calls as a result of GEM tracking to fb invalidate/flush, a call has been added to invalidate fb obj from crtc_page_flip as well. This is to track busyness through flip calls. The call to fb_obj_invalidate (in flip) is placed before queuing flip for this obj. drrs_invalidate() and drrs_flush() check for drrs.dp which would be NULL if it was setup in drrs_enable(). This covers for the condition when DRRS is not supported. v2: Removing the call to invalidate_drrs from page_flip. This has not been tested on Android yet, but, in case DRRS transtions do not work as expected, check by adding back this call in page_flip. Signed-off-by: Vandana Kannan <vandana.kannan@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915: Enable/disable DRRSVandana Kannan
Calling enable/disable DRRS when enable/disable DDI are called. These functions are responsible for setup of drrs data (in enable) and reset of drrs (in disable). has_drrs is true when downclock_mode is found and SEAMLESS_DRRS is set in the VBT. A check has been added for has_drrs in these functions, to make sure the functions go through only if DRRS will work on the platform with the attached panel. V2: [By Ram]: WARN_ON is used when intel_edp_drrs_enable() is called more than once [Rodrigo] Signed-off-by: Vandana Kannan <vandana.kannan@intel.com> Signed-off-by: Ramalingam C <ramalingam.c@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915: Initialize DRRS delayed workVandana Kannan
Add DRRS work function to trigger a switch to low refresh rate, when no activity is detected on screen till 1 sec duration. v2: [By Ram]: drrs.dp also protected with drrs.mutex and worker function is renamed to intel_edp_drrs_downclock_work [Chris] Signed-off-by: Vandana Kannan <vandana.kannan@intel.com> Signed-off-by: Ramalingam C <ramalingam.c@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915: Use symbolic irqreturn for ->hpd_pulseDaniel Vetter
Self-explanatory code is better code. Cc: Dave Airlie <airlied@redhat.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915/dsi: add some constness to vbt panel driverJani Nikula
Const is good for you. No functional changes. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-27drm/i915/dsi: remove unnecessary dsi device callbacksJani Nikula
Remove all the trivial and/or dummy callbacks from intel dsi device ops. Merge send_otp_cmds into panel_reset as they're called back to back. This will be helpful for switching to use drm_panel for the callbacks. If we ever need the additional callbacks, we should add them to drm_panel funcs. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com> [danvet: Resolve tiny conflict with ongoing atomic work.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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