- 10 Dec, 2012 4 commits
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Daniel Vetter authored
We've originally added this in commit 291427f5 Author: Jesse Barnes <jbarnes@virtuousgeek.org> Date: Fri Jul 29 12:42:37 2011 -0700 drm/i915: apply phase pointer override on SNB+ too and then copy-pasted it over to ivb/ppt. The w/a was originally added for ilk/ibx in commit 5b2adf89 Author: Jesse Barnes <jbarnes@virtuousgeek.org> Date: Thu Oct 7 16:01:15 2010 -0700 drm/i915: add Ironlake clock gating workaround for FDI link training and fixed up a bit in commit 6f06ce18 Author: Jesse Barnes <jbarnes@virtuousgeek.org> Date: Tue Jan 4 15:09:38 2011 -0800 drm/i915: set phase sync pointer override enable before setting phase sync pointer It turns out that this w/a isn't actually required on cpt/ppt and positively harmful on ivb/ppt when using fdi B/C links - it results in a black screen occasionally, with seemingfully everything working as it should. The only failure indication I've found in the hw is that eventually (but not right after the modeset completes) a pipe underrun is signalled. Big thanks to Arthur Runyan for all the ideas for registers to check and changes to test, otherwise I couldn't ever have tracked this down! Cc: "Runyan, Arthur J" <arthur.j.runyan@intel.com> Cc: stable@vger.kernel.org Reviewed-by:
Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
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Paulo Zanoni authored
If we fail to set the bit when needed we get some nice FDI link training failures (AKA "black screen on VGA output"). While we don't really know how to properly choose whether we need to set the bit or not (VBT?), just read the initial value set by the BIOS and store it for later usage. Signed-off-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by:
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Paulo Zanoni authored
We need this code to init the PCH SSC refclk and the FDI registers. The BIOS does this too and that's why VGA worked before this patch, until you tried to suspend the machine... This patch implements the "Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI/IO" from our documentation. v2: - Squash Damien Lespiau's reset spelling fix on top. - Add a comment that we don't need to bother about the ULT special case Damien noticed, since ULT won't have VGA. - Add a comment to rip out the SDV codepaths once haswell ships for real. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> (v1) Signed-off-by: -
Paulo Zanoni authored
This way we should be able to write mPHY registers using the Sideband Interface in the next commit. Also fixed some syntax oddities in the related code. Signed-off-by:
Damien Lespiau <damien.lespiau@intel.com> Signed-off-by:
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- 08 Dec, 2012 2 commits
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Paulo Zanoni authored
More specifically, the LPT FDI RX only supports 8bpc and a maximum of 2 lanes, so anything above that won't work and should be rejected. Signed-off-by:
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Paulo Zanoni authored
We were previously doing exactly what the "mode set sequence for CRT" document mandates, but whenever we failed to train the link in the first tentative, all the other subsequent retries always failed. In one of my monitors that has 47 modes, I was usually getting around 3 failures when running "testdisplay -a". After this patch, even if we fail in the first tentative, we can succeed in the next ones. So now when running "testdisplay -a" I see around 3 times the message "FDI link training done on step 1" and no failures. Notice that now the "retry" code looks a lot like the DP retry code. Signed-off-by:
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- 06 Dec, 2012 1 commit
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Chris Wilson authored
Before queuing the flip but crucially after attaching the unpin-work to the crtc, we continue to setup the unpin-work. However, should the hardware fire early, we see the connected unpin-work and queue the task. The task then promptly runs and unpins the fb before we finish taking the required references or even pinning it... Havoc. To close the race, we use the flip-pending atomic to indicate when the flip is finally setup and enqueued. So during the flip-done processing, we can check more accurately whether the flip was expected. v2: Add the appropriate mb() to ensure that the writes to the page-flip worker are complete prior to marking it active and emitting the MI_FLIP. On the read side, the mb should be enforced by the spinlocks. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org [danvet: Review the barriers a bit, we need a write barrier both before and after updating ->pending. Similarly we need a read barrier in the interrupt handler both before and after reading ->pending. With well-ordered irqs only one barrier in each place should be required, but since this patch explicitly sets out to combat spurious interrupts with is staged activation of the unpin work we need to go full-bore on the barriers, too. Discussed with Chris Wilson on irc and changes acked by him.] Signed-off-by:
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- 05 Dec, 2012 1 commit
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Daniel Vetter authored
When l3 parity support for Haswell was enabled in commit f27b9265 Author: Ben Widawsky <benjamin.widawsky@intel.com> Date: Tue Jul 24 20:47:32 2012 -0700 drm/i915: Expand DPF support to Haswell no one noticed that the patch which introduced this macro commit e1ef7cc2 Author: Ben Widawsky <benjamin.widawsky@intel.com> Date: Tue Jul 24 20:47:31 2012 -0700 drm/i915: Macro to determine DPF support missed one spot. Fix this. Cc: Ben Widawsky <benjamin.widawsky@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=57441Reviewed-by:
Ben Widawsky <benjamin.widawsky@intel.com> Signed-off-by:
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- 04 Dec, 2012 2 commits
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Chris Wilson authored
In a couple of places we attempt to adjust the existing watermark registers to update them for the new cursor watermarks. This goes horribly wrong as instead of clearing the cursor bits prior to or'ing in the new values, we clear the rest of the register with the result that the watermark registers contain bogus values. References: https://bugs.freedesktop.org/show_bug.cgi?id=47034Signed-off-by:
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Jani Nikula authored
The BLC_PWM_CTL2 register does not exist before gen4. While at it, do a slight drive by cleanup of the code. Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Reviewed-by:
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- 03 Dec, 2012 2 commits
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Ville Syrjälä authored
From BSpec: "If the Ring Buffer Head Pointer and the Tail Pointer are on the same cacheline, the Head Pointer must not be greater than the Tail Pointer." The easiest way to enforce this is to reduce the reported ring space. References: Gen2 BSpec "1. Programming Environment" / 1.4.4.6 "Ring Buffer Use" Gen3 BSpec "vol1c Memory Interface Functions" / 2.3.4.5 "Ring Buffer Use" Gen4+ BSpec "vol1c Memory Interface and Command Stream" / 5.3.4.5 "Ring Buffer Use" v2: Include the exact BSpec references in the description v3: s/64/I915_RING_FREE_SPACE, and add the BSpec information to the code Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:
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Chris Wilson authored
As we may actually allocate in order to save the physical swizzling bits during the free, we have to be careful not to trigger the shrinker on the same object. Signed-off-by:
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- 29 Nov, 2012 12 commits
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Mika Kuoppala authored
i915_gem_handle_seqno_wrap() will zero all sync_seqnos but as the wrap can happen inside ring->sync_to(), pre wrap seqno was carried over and overwrote the zeroed sync_seqno. When wrap is handled, all outstanding requests will be retired and objects moved to inactive queue, causing their last_read_seqno to be zero. Use this to update the sync_seqno correctly. RING_SYNC registers after wrap will contain pre wrap values which are >= seqno. So injecting the semaphore wait into ring completes immediately. Original idea for using last_read_seqno from Chris Wilson. Signed-off-by:
Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by:
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Chris Wilson authored
Should be useful to know what the driver thought the other ring's seqno was when it last used a semaphore. Signed-off-by:
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Chris Wilson authored
Replace the wait for the ring to be clear with the more common wait for the ring to be idle. The principle advantage is one less exported intel_ring_wait function, and the removal of a hardcoded value. Signed-off-by:
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Chris Wilson authored
As we now always preallocate the seqno before writing to the ring, we can trivially test if we have any pending activity on the ring by inspecting the olr. This makes it then possible to flush operations that are not normally associated with a request, like power-management. Signed-off-by:
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Chris Wilson authored
Based on the work by Mika Kuoppala, we realised that we need to handle seqno wraparound prior to committing our changes to the ring. The most obvious point then is to grab the seqno inside intel_ring_begin(), and then to reuse that seqno for all ring operations until the next request. As intel_ring_begin() can fail, the callers must already be prepared to handle such failure and so we can safely add further checks. This patch looks like it should be split up into the interface changes and the tweaks to move seqno wrapping from the execbuffer into the core seqno increment. However, I found no easy way to break it into incremental steps without introducing further broken behaviour. v2: Mika found a silly mistake and a subtle error in the existing code; inside i915_gem_retire_requests() we were resetting the sync_seqno of the target ring based on the seqno from this ring - which are only related by the order of their allocation, not retirement. Hence we were applying the optimisation that the rings were synchronised too early, fortunately the only real casualty there is the handling of seqno wrapping. v3: Do not forget to reset the sync_seqno upon module reinitialisation, ala resume. Signed-off-by:
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Daniel Vetter authored
There seem to be indeed some awkwards machines around, mostly those without OpRegion support, where the firmware changes the display hw state behind our backs when closing the lid. This force-restore logic has been originally introduced in commit c1c7af60 Author: Jesse Barnes <jbarnes@virtuousgeek.org> Date: Thu Sep 10 15:28:03 2009 -0700 drm/i915: force mode set at lid open time but after the modeset-rework we've disabled it in the vain hope that it's no longer required: commit 3b7a89fc Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Mon Sep 17 22:27:21 2012 +0200 drm/i915: fix OOPS in lid_notify Alas, no. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=54677 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=57434Tested-by:
Krzysztof Mazur <krzysiek@podlesie.net> Reviewed-by:
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Chris Wilson authored
In commit 69c2fc89 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Fri Jul 20 12:41:03 2012 +0100 drm/i915: Remove the per-ring write list the explicit flush was removed from i915_ring_idle(). However, we continued to wait upon the next seqno which now did not correspond to any request (except for the unusual condition of a failure to queue a request after execbuffer) and so would wait indefinitely. This has an important side-effect that i915_gpu_idle() does not cause the seqno to be incremented. This is vital if we are to be able to idle the GPU to handle seqno wraparound, as in subsequent patches. Signed-off-by:
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Mika Kuoppala authored
Dereference dev_priv only after we know it is valid. Found with smatch. Signed-off-by:
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Chris Wilson authored
Some devices may respond very slowly and only flag that the reply is pending within the first 15us response window. Be kind to such devices and wait a further 15ms, before checking for the pending reply. This moves the existing special case delay of 30ms down from the detection routine into the common path and pretends to explain it... v2: Simplify the loop constructs as suggested by Jani Nikula. References: https://bugs.freedesktop.org/show_bug.cgi?id=36997Signed-off-by:
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Paulo Zanoni authored
We currently set "0" as the VIC value of the AVI InfoFrames. According to the specs this should be fine and work for every mode, so to my point of view we can't consider the current behavior as a bug. The problem is that we recently received a bug report (Kernel bug #50371) from a user that has an AV receiver that gives a black screen for any mode with VIC set to 0. So in order to make at least some modes work for him, this patch sets the correct VIC number when sending AVI InfoFrames. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=50371Signed-off-by:
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Paulo Zanoni authored
This function returns the VIC of the mode. This value can be used when creating AVI InfoFrames. Cc: Thierry Reding <thierry.reding@avionic-design.de> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=50371Signed-off-by:
Thierry Reding <thierry.reding@avionic-design.de> Acked-by:
Dave Airlie <airlied@gmail.com> Signed-off-by:
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Ben Widawsky authored
This bug was introduced by me: commit e76e9aeb Author: Ben Widawsky <ben@bwidawsk.net> Date: Sun Nov 4 09:21:27 2012 -0800 drm/i915: Stop using AGP layer for GEN6+ The existing code uses memset_io which follows memset semantics in only guaranteeing a write of individual bytes. Since a PTE entry is 4 bytes, this can only be correct if the scratch page address is 0. This caused unsightly errors when we clear the range at load time, though I'm not really sure what the heck is referencing that memory anyway. I caught this is because I believe we have some other bug where the display is doing reads of memory we feel should be cleared (or we are relying on scratch pages to be a specific value). Signed-off-by:
Ben Widawsky <ben@bwidawsk.net> Reviewed-by:
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- 23 Nov, 2012 1 commit
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Paulo Zanoni authored
Since it should be working a little bit better now. Signed-off-by:
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- 22 Nov, 2012 3 commits
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Chris Wilson authored
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Chris Wilson authored
Use the recorded panel fixed-mode to populate the get_modes() request in the absence of an EDID. Fixes regression from commit 9cd300e0 Author: Jani Nikula <jani.nikula@intel.com> Date: Fri Oct 19 14:51:52 2012 +0300 drm/i915: Move cached EDID to intel_connector Signed-off-by:
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Jani Nikula authored
Since the base fields in both struct intel_connector and struct intel_sdvo_connector are at the beginning of the enclosing struct, the pointers are essentially the same, but there is no requirement or guarantee that this is always the case. Kfree the enclosing intel_sdvo_connector pointer that was originally allocated, not the enclosed drm_connector, in case someone ever rearranges the structs. Signed-off-by:
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- 21 Nov, 2012 12 commits
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Rob Clark authored
v2: Rebased. Signed-off-by:
Rob Clark <rob@ti.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> (v1) [danvet: Pimp commit message a bit.] Signed-off-by:
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Rob Clark authored
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Ben Widawsky authored
This was leftover crap from kill-agp. The current code is theoretically broken for 64b bars. (I resist removing theoretically because I am too lazy to test). We still need to ioremap things ourselves because we want to ioremap_wc the PTEs. v2: Forgot to kill the tmp variable in v1 CC: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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Chris Wilson authored
If we have hit oom whilst holding our struct_mutex, then currently we cannot reap our own GPU buffers which likely pin most of memory, making an outright OOM more likely. So if we are running in direct reclaim and already hold the mutex, attempt to free buffers knowing that the original function can not continue until we return. v2: Add a note explaining that the mutex may be stolen due to pre-emption, and that is bad. Signed-off-by:
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Chris Wilson authored
As we may invoke the shrinker whilst trying to allocate memory to hold the gtt_space for this object, we need to be careful not to mark the drm_mm_node as activated (by assigning it to this object) before we have finished our sequence of allocations. Note: We also need to move the binding of the object into the actual pagetables down a bit. The best way seems to be to move it out into the callsites. Reported-by:
Imre Deak <imre.deak@gmail.com> Signed-off-by:
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Chris Wilson authored
As the SDVO/HDMI registers are multiplex, it is safe to assume that the w/a required for HDMI on IbexPoint, namely that the SDVO register cannot both be disabled and have selected transcoder B, is also required for SDVO. At least the modeset state checker detects that the transcoder selection is left in the undefined state, and so it appears sensible to apply the w/a: [ 1814.480052] WARNING: at drivers/gpu/drm/i915/intel_display.c:1487 assert_pch_hdmi_disabled+0xad/0xb5() [ 1814.480053] Hardware name: Libretto W100 [ 1814.480054] IBX PCH hdmi port still using transcoder B Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=57066Signed-off-by:
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Paulo Zanoni authored
Also document the WA name for the previous gens that implement it. Reviewed-by:
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Paulo Zanoni authored
For now, this code is just used by the eDP AUX channel frequency. Signed-off-by:
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Paulo Zanoni authored
This goes on a separate patch since it won't apply on the stable trees and there's nothing using panel fitter on HSW on the older Kernels. Signed-off-by:
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Paulo Zanoni authored
I actually found this problem on Haswell, but then discovered Ivy Bridge also has it by reading the spec. I don't have the hardware to test this. Cc: stable@vger.kernel.org Signed-off-by:
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Paulo Zanoni authored
DDI A and E have 4 lanes to share, so if DDI A is using 4 lanes, there's nothing left for DDI E, which means there's no CRT port on the machine. The bit we're checking here is programmed at system boot and it cannot be changed afterwards, so we cannot change the amount of lanes reserved for each DDI port. Signed-off-by:
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Paulo Zanoni authored
We need to enable a special bit, otherwise none of the DP functions requiring the PCH will work. Version 2: store the PCH ID inside dev_priv, as suggested by Daniel Vetter. Signed-off-by:
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