- 24 Jan, 2013 20 commits
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Ville Syrjälä authored
Instead of 0x18xxxx use (VLV_DISPLAY_BASE + xxxx). Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
CURSIZE is not present on VLV, so it was left out, as were the IVB specific cursor B registers. Signed-off-by:
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
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Ville Syrjälä authored
Add an optional offset to intel_device_info, which will added to most display register offsets. Signed-off-by:
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Ville Syrjälä authored
Use intel_dig_port->port rather than intel_dp->output_reg. Signed-off-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by:
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Ville Syrjälä authored
Use intel_dig_port->port rather than intel_hdmi->sdvox_erg. Signed-off-by:
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Paulo Zanoni authored
Because the register does not exist in gen5+. This patch solves "unclaimed register" messages on Haswell after suspend/resume. Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
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- 22 Jan, 2013 6 commits
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Daniel Vetter authored
commit 09153000 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Wed Dec 12 14:06:44 2012 +0100 drm/i915: rework locking for intel_dpio|sbi_read|write reworked the locking around sbi_read/write functions for 3.8-fixes. But commit dde86e2d Author: Paulo Zanoni <paulo.r.zanoni@intel.com> Date: Sat Dec 1 12:04:25 2012 -0200 drm/i915: add lpt_init_pch_refcl Added new use-cases in the -next tree which has not been updated in the merge. Fix it up. Reported-by:
Ben Widawsky <ben@bwidawsk.net> Reviewed-by:
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Wang Xingchao authored
ELD info should be updated dynamically according to hot plug event. For haswell chip, clear/set the eld valid bit and output enable bit from callback intel_disable/eanble_ddi(). Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@gmail.com> Signed-off-by:
Wang Xingchao <xingchao.wang@intel.com> Signed-off-by:
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Mika Kuoppala authored
When machine was rebooted or module was reloaded, gem_hw_init() set last_seqno to be identical to next_seqno. This lead to situation that waits for first ever request always passed immediately regardless if it was actually executed. Use gem_set_seqno() to be consistent how hw is initialized on init, wrap and on resume. Signed-off-by:
Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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Jani Nikula authored
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44156Reported-by:
Alan Zimmerman <alan.zimm@gmail.com> Signed-off-by:
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Jani Nikula authored
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=31522#c35 [Note: There are more than one broken setups in the bug. This fixes one.] Reported-by:
Martins <andrissr@inbox.lv> Signed-off-by:
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Jani Nikula authored
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=59628Reported-by:
Roland Gruber <post@rolandgruber.de> Signed-off-by:
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- 21 Jan, 2013 2 commits
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Daniel Vetter authored
Damien Lespiau wondered how race the gpu reset/hang detection code is against concurrent gpu resets/hang detections or combinations thereof. Luckily the single work item is guranteed to never run concurrently, so reset handling is already single-threaded. Hence we only have to worry about concurrent hang detections, or a hang detection firing off while we're still processing an older gpu reset request. Due to the new mechanism of setting the reset in progress flag and the ordering guaranteed by the schedule_work function there's nothing to do but add a comment explaining why we're safe. The only thing I've noticed is that we still try to reset the gpu now, even when it is declared terminally wedged. Add a check for that to avoid continous warnings about failed resets, in case the hangcheck timer ever gets stuck. Reviewed-by:
Damien Lespiau <damien.lespiau@intel.com> Signed-off-by:
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Daniel Vetter authored
With the previous patch the state transition handling of the reset code itself is now (hopefully) race free and solid. But that still leaves out everyone else - with the various lock-free wait paths we have there's the possibility that the reset happens between the point where we read the seqno we should wait on and the actual wait. And if __wait_seqno then never sees the RESET_IN_PROGRESS state, we'll happily wait for a seqno which will in all likelyhood never signal. In practice this is not a big problem since the X server gets constantly interrupted, and can then submit more work (hopefully) to unblock everyone else: As soon as a new seqno write lands, all waiters will unblock. But running the i-g-t reset testcase ZZ_hangman can expose this race, especially on slower hw with fewer cpu cores. Now looking forward to ARB_robustness and friends that's not the best possible behaviour, hence this patch adds a reset_counter to be able to detect any reset, even if a given thread never observed the in-progress state. The important part is to correctly order things: - The write side needs to increment the counter after any seqno gets reset. Hence we need to do that at the end of the reset work, and again wake everyone up. We also need to place a barrier in between any possible seqno changes and the counter increment, since any unlock operations only guarantee that nothing leaks out, but not that at later load operation gets moved ahead. - On the read side we need to ensure that no reset can sneak in and invalidate the seqno. In all cases we can use the one-sided barrier that unlock operations guarantee (of the lock protecting the respective seqno/ring pair) to ensure correct ordering. Hence it is sufficient to place the atomic read before the mutex/spin_unlock and no additional barriers are required. The end-result of all this is that we need to wake up everyone twice in a reset operation: - First, before the reset starts, to get any lockholders of the locks, so that the reset can proceed. - Second, after the reset is completed, to allow waiters to properly and reliably detect the reset condition and bail out. I admit that this entire reset_counter thing smells a bit like overkill, but I think it's justified since it makes it really explicit what the bail-out condition is. And we need a reset counter anyway to implement ARB_robustness, and imo with finer-grained locking on the horizont this is the most resilient scheme I could think of. v2: Drop spurious change in the wait_for_error EXIT_COND - we only need to wait until we leave the reset-in-progress wedged state. v3: Don't play tricks with barriers in the throttle ioctl, the spin_unlock is barrier enough. I've also considered using a little helper to grab the current reset_counter, but then decided that hiding the atomic_read isn't a great idea, since having it explicitly show up in the code is a nice remainder to reviews to check the memory barriers. v4: Add a comment to explain why we need to fall through in __wait_seqno in the end variable assignments. v5: Review from Damien: - s/smb/smp/ in a comment - don't increment the reset counter after we've set it to WEDGED. Now we (again) properly wedge the gpu when the reset fails. Reviewed-by:
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- 20 Jan, 2013 12 commits
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Chris Wilson authored
Now that we seem to have brought order to the GTT barriers, the last one to review is the terminal barrier before we unbind the buffer from the GTT. This needs to only be performed if the buffer still resides in the GTT domain, and so we can skip some needless barriers otherwise. Signed-off-by:
Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by:
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Chris Wilson authored
With a fence, we only need to insert a memory barrier around the actual fence alteration for CPU accesses through the GTT. Performing the barrier in flush-fence was inserting unnecessary and expensive barriers for never fenced objects. Note removing the barriers from flush-fence, which was effectively a barrier before every direct access through the GTT, revealed that we where missing a barrier before the first access through the GTT. Lack of that barrier was sufficient to cause GPU hangs. v2: Add a couple more comments to explain the new barriers Signed-off-by:
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Daniel Vetter authored
We have two important transitions of the wedged state in the current code: - 0 -> 1: This means a hang has been detected, and signals to everyone that they please get of any locks, so that the reset work item can do its job. - 1 -> 0: The reset handler has completed. Now the last transition mixes up two states: "Reset completed and successful" and "Reset failed". To distinguish these two we do some tricks with the reset completion, but I simply could not convince myself that this doesn't race under odd circumstances. Hence split this up, and add a new terminal state indicating that the hw is gone for good. Also add explicit #defines for both states, update comments. v2: Split out the reset handling bugfix for the throttle ioctl. v3: s/tmp/wedged/ sugested by Chris Wilson. Also fixup up a rebase error which prevented this patch from actually compiling. v4: To unify the wedged state with the reset counter, keep the reset-in-progress state just as a flag. The terminally-wedged state is now denoted with a big number. v5: Add a comment to the reset_counter special values explaining that WEDGED & RESET_IN_PROGRESS needs to be true for the code to be correct. v6: Fixup logic errors introduced with the wedged+reset_counter unification. Since WEDGED implies reset-in-progress (in a way we're terminally stuck in the dead-but-reset-not-completed state), we need ensure that we check for this everywhere. The specific bug was in wait_for_error, which would simply have timed out. v7: Extract an inline i915_reset_in_progress helper to make the code more readable. Also annote the reset-in-progress case with an unlikely, to help the compiler optimize the fastpath. Do the same for the terminally wedged case with i915_terminally_wedged. Reviewed-by:
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Daniel Vetter authored
While auditing the code I've noticed one place (the throttle ioctl) which does not yet wait for the reset handler to complete and doesn't properly decode the wedge state into -EAGAIN/-EIO. Fix this up by calling the right helpers. This might explain the oddball "my compositor just died in a successfull gpu reset" reports. Or maybe not, since current mesa doesn't use this ioctl to throttle command submission. The throttle ioctl doesn't take the struct_mutex, so to avoid busy-looping with -EAGAIN while a reset is in process, check for errors first and wait for the handler to complete if a reset is pending by calling i915_gem_wait_for_error. Reviewed-by:
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Daniel Vetter authored
And to make Ben Widawsky happier, use the gpu_error instead of the entire device as the argument in some functions. Drop the outdated comment on ->wedged for now, a follow-up patch will change the semantics and add a proper comment again. Reviewed-by:
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Daniel Vetter authored
This has been sprinkled all over the place in dev_priv. I think it'd be good to also move all the code into a separate file like i915_gem_error.c, but that's for another patch. Reviewed-by:
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Daniel Vetter authored
Tha one is really big, since it contains tons of comments explaining how things work. Which is nice ;-) Reviewed-by:
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Ben Widawsky authored
It is no longer used in the i915 code, so isolate it from the shared struct. This was originally part of: commit 0e275518f325418d559c05327775bff894b237f7 Author: Ben Widawsky <ben@bwidawsk.net> Date: Mon Jan 14 13:35:33 2013 -0800 agp/intel: decouple more of the agp-i915 sharing Reviewed-by: -
Ben Widawsky authored
The reasoning behind our code taking two paths depending upon whether or not we may have been configured for IOMMU isn't clear to me. It should always be safe to use the pci mapping functions as they are designed to abstract the decision we were handling in i915. Aside from simpler code, removing another member for the intel_gtt struct is a nice motivation. I ran this by Chris, and he wasn't concerned about the extra kzalloc, and memory references vs. page_to_phys calculation in the case without IOMMU. v2: Update commit message v3: Remove needs_dmar addition from Zhenyu upstream This reverts (and then other stuff) commit 20652097 Author: Zhenyu Wang <zhenyuw@linux.intel.com> Date: Thu Dec 13 23:47:47 2012 +0800 drm/i915: Fix missed needs_dmar setting Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> (v2) Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by:
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Ben Widawsky authored
We already had a mapping in both (minus the phys_addr in AGP). Reviewed-by:
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Ben Widawsky authored
And, move it to where the rest of the logic is. There is some slight functionality changes. There was extra paranoid checks in AGP code making sure we never do idle maps on gen2 parts. That was not duplicated as the simple PCI id check should do the right thing. v2: use IS_GEN5 && IS_MOBILE check instead. For now, this is the same as IS_IRONLAKE_M but is more future proof. The workaround docs hint that more than one platform may be effected, but we've never seen such a platform in the wild. (Rodrigo, Daniel) Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> (v1) Cc: Dave Airlie <airlied@redhat.com> Signed-off-by:
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Ville Syrjälä authored
The AVI infoframe is able to inform the display whether the source is sending full or limited range RGB data. As per CEA-861 [1] we must first check whether the display reports the quantization range as selectable, and if so we can set the approriate bits in the AVI inforframe. [1] CEA-861-E - 6.4 Format of Version 2 AVI InfoFrame v2: Give the Q bits better names, add spec chapter information Reviewed-by:
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