- 22 Feb, 2017 7 commits
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Chris Wilson authored
Flushing the cachelines for an object is slow, can be as much as 100ms for a large framebuffer. We currently do this under the struct_mutex BKL on execution or on pageflip. But now with the ability to add fences to obj->resv for both flips and execbuf (and we naturally wait on the fence before CPU access), we can move the clflush operation to a workqueue and signal a fence for completion, thereby doing the work asynchronously and not blocking the driver or its clients. v2: Introduce i915_gem_clflush.h and use a new name, split out some extras into separate patches. Suggested-by:
Akash Goel <akash.goel@intel.com> Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Reviewed-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170222114049.28456-5-chris@chris-wilson.co.uk
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Chris Wilson authored
Generalise the skip for physical and stolen objects by skipping anything we do not have a valid address for inside the sg. Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170222114049.28456-4-chris@chris-wilson.co.uk
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Chris Wilson authored
We have three different paths by which userspace wants to flush the display plane (i.e. objects with obj->pin_display). Use a common helper to identify those paths and to simplify a later change. v2: Include the conditional in the name, i915_gem_object_flush_if_display Signed-off-by:
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Chris Wilson authored
For use in the next patch, take the current is-coherent helper and add it to i915_gem_object.h Signed-off-by:
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Chris Wilson authored
The change_domain tracepoint has been inaccurate for a few years - it doesn't fully capture the domains, especially with userspace bypassing them. It is defunct, misleading and time to be removed. Signed-off-by:
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Chris Wilson authored
Handling the dynamic charp module parameter requires us to copy it for the error state, or remember to lock it when reading (in case it used with 0600). v2: Use __always_inline and __builtin_strcmp Signed-off-by:
Jani Nikula <jani.nikula@intel.com>
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Chuanxiao Dong authored
When not using GuC submission, the ring buffer size for GVT context is 512KB which is the max size. When switching to GuC submission, the ring buffer size is required to be less than 16KB. So use the GVT context default ring buffer size if GuC submission is enabled. Signed-off-by:
Chuanxiao Dong <chuanxiao.dong@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170216063639.GA17107@intel.comReviewed-by:
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- 21 Feb, 2017 10 commits
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Tvrtko Ursulin authored
It is useful to provide this info to match the one provided in the request tracepoints. Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170221091350.14605-1-tvrtko.ursulin@linux.intel.comReviewed-by:
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Tvrtko Ursulin authored
Two new tracepoints placed at the call sites where requests are actually passed to the GPU enable userspace to track engine utilisation. These tracepoints are only enabled when the DRM_I915_LOW_LEVEL_TRACEPOINTS Kconfig option is enabled. v2: Fix compilation with !CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS. v3: Name global seqno consistently across tracepoints. v4: Remove port info from request out tracepoint. (Chris Wilson) Signed-off-by:
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Tvrtko Ursulin authored
i915_gem_ring_notify is more appropriate since we do not have the request information at this point, but it is simply a signal from the engine that some request has been completed. v2: * Always trace and log if there were any waiters. * Rename to intel_engine_notify. (Chris Wilson) Signed-off-by:
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Tvrtko Ursulin authored
These new tracepoints are emitted once the request is ready to be submitted to the GPU and once the request is about to be submitted to the GPU, respectively. Former condition triggers as soon as all the fences and dependencies have been resolved, and the latter once the backend is about to submit it to the GPU. New tracepoint are enabled via the new DRM_I915_LOW_LEVEL_TRACEPOINTS Kconfig option which is disabled by default to alleviate the performance impact concerns. v2: Move execute tracepoint to __i915_gem_request_submit. (Chris Wilson) Signed-off-by: -
Tvrtko Ursulin authored
Tracepoint is not used and won't be suitable for its replacement. Signed-off-by:
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Tvrtko Ursulin authored
Provide the same information as the other request event classes. v2: Pass in flags so we can properly report the blocking status. (Chris Wilson) v3: Log hex with 0x prefix for clarity. v4: Derive blocking status from flags. (Chris Wilson) Signed-off-by: -
Tvrtko Ursulin authored
Rename it to i915_gem_request_queue and fix the logged info equivalent to the i915_gem_request even class. Also moved it a bit further apart from the i915_gem_request_add tracepoint since they otherwise provide similar information too close in time. v2: Remove sw fence singalling. We will rely on the soon to come GuC scheduling backend to enable that. (Chris Wilson) v3: Log hex with 0x prefix for clarity. Signed-off-by: -
Tvrtko Ursulin authored
At the moment only the global seqno is logged which is not set until the request is ready for submission. Add the per-contex seqno and the context hardware id which are both interesting data points. Signed-off-by:
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Tvrtko Ursulin authored
Compact the name of the macro and reg_state variable, and cache some data in local variables to make the function more compact and more readable. v2: Fixup some checkpatch warnings. Signed-off-by:
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Chris Wilson authored
Replace the calls to ww_mutex_lock(&resv->lock) with the helper reservation_object_lock(resv) and similarly for unlock. Signed-off-by:
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- 20 Feb, 2017 14 commits
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Chris Wilson authored
The hardware requires that the tail pointer only advance in qword units, so assert that the value we write is aligned to qwords, and similarly enforce this restriction onto the request->tail. Signed-off-by:
Michał Winiarski <michal.winiarski@intel.com>
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Imre Deak authored
Verify that the refcount of all power wells match their HW enabled state at the end of modeset HW state readout. Also add documentation on how the reference count for each power well is supposed to be acquired during initialization and HW state readout. Suggested by Ander. Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com> Cc: David Weinehall <david.weinehall@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Imre Deak <imre.deak@intel.com> Reviewed-by:
Ander Conselvan de Oliveira <conselvan2@gmail.com> Link: http://patchwork.freedesktop.org/patch/msgid/1487345986-26511-6-git-send-email-imre.deak@intel.com
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Imre Deak authored
Atm, power wells that BIOS has enabled, but which we don't explicitly enable during power domain initialization would get disabled as we clear the BIOS request bit in the given power well sync_hw hook. To prevent this copy over any set request bits in the BIOS request register to the driver request register and clear the BIOS request bit only afterwards. This doesn't make a difference now, since we enable all power wells during power domain initialization. A follow-up patchset will add power wells for which this isn't true, so fix up the inconsistency. Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com> Cc: David Weinehall <david.weinehall@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Imre Deak authored
Atm, in the power well sync_hw hook we are clearing all BIOS request bits, not just the one corresponding to the given power well. This could turn off an unrelated power well inadvertently if it didn't have a request bit set in the driver request register. This didn't cause a problem so far, since we enabled all power wells explicitly before clearing the BIOS request register. A follow-up patchset will add power wells that won't get enabled this way, so fix up the inconsistency. Note that this patch only makes the clearing of the BIOS req register more logical. Power wells without a reference would still get disabled by the end of power domain initialization, that is fixed by the next patch. v2: - Clarify in the commit log that this patch doesn't address the case of power wells without a reference. (Ander) Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com> Cc: David Weinehall <david.weinehall@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Imre Deak authored
So far the sync_hw hook wasn't called for power wells not belonging to any power domain, that is the GEN9 PW1 and MISC_IO power wells. This wasn't a problem so far since the goal of the sync_hw hook - to clear the corresponding BIOS request bit - was guaranteed by clearing the whole BIOS request register elsewhere. This will change with the next patch, so fix up the inconsistency. While at it clean up the power well iterator helpers and move them to the rest of iterators. v2: - Clean up the power well iterator helpers. (Ander) - Move the helpers to i915_drv.h. Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com> Cc: David Weinehall <david.weinehall@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Imre Deak authored
Doing an explicit enable/disable in the power well sync_hw hook based on the power well's reference count is redundant, since by the time these hooks are called all the power wells are enabled and have a reference. So remove the redundant toggling. This is needed by a follow-up patchset that adds power wells which we can't enable/disable during power domain initialization and so want to preserve their state until modeset init time. Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com> Cc: David Weinehall <david.weinehall@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Chris Wilson authored
The uncached mmio is sufficient to queue the mmio writes without raising forcewake. The forced flush along with acquiring forcewake from the posting read is not required for adjusting the RPS frequency. Signed-off-by:
Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
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Chris Wilson authored
If intel_set_rps() is called whilst the hw is disabled, just store the requested frequency (from the user) for application when we wake the hw up. Signed-off-by:
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Chris Wilson authored
Instead of having each back-end provide identical guards, just have a singular set in intel_set_rps() to verify that the caller is obeying the rules. Signed-off-by:
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Tvrtko Ursulin authored
Pronounces less rude when fixed. Signed-off-by:
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Chris Wilson authored
Either by chance, or by misread, the current evaluation interval may be zero. If that is the case, don't divide by it! Signed-off-by:
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Chris Wilson authored
We don't need struct_mutex for acquiring an rpm wakeref, and do not need to serialise those register read (it's the wrong mutex for those registers in any case). Begone! Signed-off-by:
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Chris Wilson authored
Prevent the overflow check from firing on machines with the full 4lvl page tables, that are not restricted to GEN8_LEGACY_PDES. v2: Also fix the off-by-one in the compare Fixes: 894ccebe ("drm/i915: Micro-optimise gen8_ppgtt_insert_entries()") Signed-off-by:
Mika Kuoppala <mika.kuoppala@intel.com>
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Rodrigo Vivi authored
There is a new version of DMC available for Geminilake. It's release notes only mention: - Enhancement in the FW to restore the PG2 state v2: Fixed the platform name on commit message. Noticed by Jani S. v3: cook on top of drm-tip without depending on kbl one so CI can check. v4: make v3 on top of v2. Cc: David Weinehall <tao@kernel.org> Cc: Jani Saarinen <jani.saarinen@intel.com> Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Signed-off-by:Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by:
Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1487295515-15396-1-git-send-email-rodrigo.vivi@intel.com
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- 17 Feb, 2017 9 commits
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Chris Wilson authored
If we wait upon the full (i.e. all shared fences, or upon an exclusive fence) reservation object successfully, we know that all fences beneath it have been signaled, so long as no new fences were added whilst we slept. If the reservation_object remains the same, as detected by its seqcount, we can then reap all the fences upon completion. Signed-off-by:
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Chris Wilson authored
As a backup to waiting on a user-interrupt from the GPU, we use a heavy and frequent timer to wake up the waiting process should we detect an inconsistency whilst waiting. After seeing a "missed interrupt", the next time we wait, we restart the heavy timer. This patch is more reluctant to restart the timer and will only do so if we have not see any interrupts since when we started the fake irq timer. If we are seeing interrupts, then the waiters are being woken normally and we had an incoherency that caused to miss last time - that is unlikely to reoccur and so taking the risk of stalling again seems pragmatic. Signed-off-by:
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Chris Wilson authored
If the waiter was currently running, assume it hasn't had a chance to process the pending interrupt (e.g, low priority task on a loaded system) and wait until it sleeps before declaring a missed interrupt. References: https://bugs.freedesktop.org/show_bug.cgi?id=99816Signed-off-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170217151304.16665-4-chris@chris-wilson.co.uk
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Chris Wilson authored
If an interrupt has been posted, and we were spinning on the active seqno waiting for it to advance but it did not, then we can expect that it will not see its advance in the immediate future and should call into the irq-seqno barrier. We can stop spinning at this point, and leave the difficulty of handling the coherency to the caller. Signed-off-by:
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Chris Wilson authored
When the timer expires for checking on interrupt processing, check to see if any interrupts arrived within the last time period. If real interrupts are still being delivered, we can be reassured that we haven't missed the final interrupt as the waiter will still be woken. Only once all activity ceases, do we have to worry about the waiter never being woken and so need to install a timer to kick the waiter for a slow arrival of a seqno. Signed-off-by:
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Ander Conselvan de Oliveira authored
Now that the pre-csc degamma table is set up correctly in Geminilake, pipe CSC can be enabled without causing a black screen. v2: Rebase. Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170217120630.6143-3-ander.conselvan.de.oliveira@intel.com
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Ander Conselvan de Oliveira authored
In Geminilake, the degamma table is enabled or disabled by the pipe CSC enable bit, so its active even when running in the legacy gamma mode. So always set sane values for that table, since the default value is all zeroes. This fixes blank screens after a suspend/resume cycle while legacy gamma is in use. Signed-off-by:
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Tvrtko Ursulin authored
We have a few open coded instances in the execlists code and an almost suitable helper in intel_ringbuf.c We can consolidate to a single helper if we change the existing helper to emit directly to ring buffer memory and move the space reservation outside it. v2: Drop memcpy for memset. (Chris Wilson) Signed-off-by:
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Tvrtko Ursulin authored
Use the "*batch++ = " style as in the ring emission for better readability and also simplify the logic a bit by consolidating the offset and size calculations and overflow checking. The latter is a programming error so it is not required to check for it after each write to the object, but rather do it once the whole state has been written and fail the driver if something went wrong. v2: Rebase. v3: Keep track of offsets and sizes in bytes for simplicity and rename function pointer variable to _fn suffix. (Chris Wilson) v4: Fix size calc broken in v3 and add alignment warning. (Chris Wilson) v5: Fix return code. v6: I added an exit from loop in v5 but forgot to put back the object teardown. Signed-off-by:
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