- 29 Jun, 2015 11 commits
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Ville Syrjälä authored
Allow tweaking the VLV/CHV memory latencies thorugh sysfs, like we do for ILK+. Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:
Clint Taylor <Clinton.A.Taylor@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
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Ville Syrjälä authored
Enabling PM5/DDR DVFS with multiple active pipes isn't a validated configuration. It does seem to work most of the time at least, but there is clearly an additional risk of underruns, so let's not play with fire. Signed-off-by:
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Ville Syrjälä authored
CxSR (or maxfifo on VLV/CHV) blocks somne changes to the plane control register (enable bit at least, not quite sure about the rest). So in order to have the plane enable/disable when we want we need to first kick the hardware out of cxsr. Unfortunateloy this requires some extra vblank waits. For the CxSR enable after the plane update we should eventually use an async vblank worker, but since we don't have that just do sync vblank waits. For the disable case we have no choice but to do it synchronously. Signed-off-by:
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Ville Syrjälä authored
In order to get decnet memory self refresh residency on VLV, flip it over to the new CHV way of doing things. VLV doesn't do PM5 or DDR DVFS so it's a bit simpler. I'm not sure the currently memory latency used for CHV is really appropriate for VLV. Some further testing will probably be needed to figure that out. Signed-off-by:
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Ville Syrjälä authored
Consider which planes are active and compute the FIFO split based on the relative data rates. Since we only consider the pipe src width rather than the plane width when computing watermarks it seems best to do the same when computing the FIFO split as well. This means the only thing we actually have to consider for the FIFO splut is the bpp, and we can ignore the rest. I've just stuffed the logic into the watermark code for now. Eventually it'll need to move into the atomic update for the crtc. There's also one extra complication I've not yet considered; Some of the DSPARB registers contain bits related to multiple pipes. The registers are double buffered but apparently they update on the vblank of any active pipe. So doing the FIFO reconfiguration properly when multiple pipes are active is not going to be fun. But let's ignore that mess for now. Signed-off-by:
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Ville Syrjälä authored
Turns out the VLV/CHV system agent doesn't understand memory latencies, so trying to rely on the PND deadline mechanism is not going to fly especially when DDR DVFS is enabled. Currently we try to avoid the problems by lying to the system agent about the deadlines and setting the FIFO watermarks to 8 cachelines. This however leads to bad memory self refresh residency. So in order to satosfy everyone we'll just give up on the deadline scheme and program the watermarks old school based on the worst case memory latency. I've modelled this a bit on the ILK+ approach where we compute multiple sets of watermarks for each pipe (PM2,PM5,DDR DVFS) and when merge thet appropriate one later with the watermarks from other pipes. There isn't too much to merge actually since each pipe has a totally independent FIFO (well apart from the mess with the partially shared DSPARB registers), but still decopuling the pipes from each other seems like a good idea. Eventually we'll want to perform the watermark update in two phases around the plane update to avoid underruns due to the single buffered watermark registers. But that's still in limbo for ILK+ too, so I've not gone that far yet for VLV/CHV either. Signed-off-by:
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Ville Syrjälä authored
Read out the current watermark settings from the hardware at driver init time. This will allow us to compare the newly calculated values against the currrent ones and potentially avoid needless WM updates. Signed-off-by:
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Ville Syrjälä authored
Try to update the watermarks on the right side of the plane update. This is just a temporary hack until we get the proper two part update into place. However in the meantime this might have some chance of at least working. Signed-off-by:
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Ville Syrjälä authored
We want cxsr exit to happen ASAP, so toss in some POSTING_READ()s to make sure things are really kicked off. Signed-off-by:
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Daniel Vetter authored
We can't elide the fb tracking invalidate if the buffer is already in the right domain since that would lead to missed screen updates. I'm pretty sure I've written this already before but must have gotten lost unfortunately :( v2: Chris observed that all internal set_domain users already correctly do the fb invalidate on their own, hence we can move this just into the set_domain ioctl instead. v3: I screwed up setting the invalidate ORIGIN_* correctly (Chris). Cc: Chris Wilson <chris@chris-wilson.co.uk> Reported-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Reviewed-by:
Chris Wilson <chris@chris-wilson.co.uk> Tested-by:
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Rodrigo Vivi authored
We cannot let IPS enabled with no plane on the pipe: BSpec: "IPS cannot be enabled until after at least one plane has been enabled for at least one vertical blank." and "IPS must be disabled while there is still at least one plane enabled on the same pipe as IPS." This restriction apply to HSW and BDW. However a shortcut path on update primary plane function to make primary plane invisible by setting DSPCTRL to 0 was leting IPS enabled while there was no other plane enabled on the pipe causing flickerings that we were believing that it was caused by that other restriction where ips cannot be used when pixel rate is greater than 95% of cdclok. v2: Don't mess with Atomic path as pointed out by Ville. v3: Rebase after a long time and atomic path changes. Accept Ville suggestion of not check !fb v4: Re-factore on dinq Reference: https://bugs.freedesktop.org/show_bug.cgi?id=85583 Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by:Kenneth Graunke <kenneth@whitecape.org> [danvet: Make it compile] Signed-off-by:
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- 26 Jun, 2015 21 commits
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Damien Lespiau authored
We can't improve a 0 deviation, so when we find such a divider, skip the remaining ones they won't be better. This short-circuit the search for 34 of the 373 test frequencies in the corresponding i-g-t test (tools/skl_compute_wrpll) v2: Place the short-circuiting code in skl_compute_wrpll() (Paulo) (I'm sure nobody will notice the spurious removal of a blank line) Reviewed-by:
Damien Lespiau <damien.lespiau@intel.com> Signed-off-by:
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Bob Paauwe authored
Broxton is using a different register and different bit ordering for rps status capabilities. Also GT perf freqency register is different for Broxton so update that. Signed-off-by:
Bob Paauwe <bob.j.paauwe@intel.com> Reviewed-by:
Imre Deak <imre.deak@intel.com> Signed-off-by:
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Damien Lespiau authored
Currently, if an odd divider improves the deviation (minimizes it), we take that divider. The recommendation is to prefer even dividers. v2: Move the check at the right place after having inverted the two for loops in the previous patch. Signed-off-by: -
Damien Lespiau authored
The HW validation team came back from further testing with a slightly changed constraint on the deviation between the DCO frequency and the central frequency. Instead of +-4%, it's now +1%/-6%. Unfortunately, the previous algorithm didn't quite cope with these new constraints, the reason being that it wasn't thorough enough looking at the possible divider candidates. The new algorithm looks at all dividers, which is definitely a hammer approach (we could reduce further the set of dividers to good ones as a follow up, at the cost of a bit more complicated code). But, at least, we can now satisfy the +1%/+6% rule for all the "Well known" HDMI frequencies of my test set (373 entries). On that subject, the new code is quite extensively tested in intel-gpu-tools (tools/skl_compute_wrpll). v2: Fix cycling between central frequencies and dividers (Paulo) Properly choose the minimal deviation between postive and negative candidates (Paulo). On the 373 test frequencies, v2 computes better dividers than v1 (ie more even dividers and lower deviation on average): v1: average deviation: 206.52 v2: average deviation: 194.47 Signed-off-by: -
Michel Thierry authored
After Mika's ppgtt cleanup series, all the other free functions have drm_device as the first parameter, except this one. No functional changes. Signed-off-by:
Michel Thierry <michel.thierry@intel.com> Reviewed-by:
Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by:
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Michel Thierry authored
A safer way to update the PDPx registers is sending lri commands, added in the ring before the batchbuffer start. Otherwise, the ctx must be idle before trying to change anything (but the ring-tail) in the ctx image. An example where the ctx won't be idle is lite-restore. This patch depends on 5b7e4c9c ("drm/i915/gtt: Mark TLBS dirty for gen8+"). v2: Combine lri writes (and save 8 commands). (Mika) v3: Rebase after ring/req changes, and removed references to deprecated patches. Cc: Dave Gordon <david.s.gordon@intel.com> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by:
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Mika Kuoppala authored
There is no need for atomicity here. Convert all bitmap operations to nonatomic variants. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Mika Kuoppala authored
Scratch page is part of struct i915_address_space. Move other scratch entities into the same struct. This is a preparatory patch for having only one instance of each scratch_pt/pd. v2: make commit msg more readable Signed-off-by:
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Mika Kuoppala authored
Write page directory entry without using superfluous indirect function. Also remove unused device parameter from the encode function. Signed-off-by:
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Mika Kuoppala authored
Dynamic page table allocation might wake the shrinker when memory is requested for page table structures. As this happens when we try to allocate the virtual address during binding, our vma might be among the targets for eviction. We should do i915_vma_pin() and do pin early in there like Chris suggests but this is interim solution. Shield our vma from shrinker by incrementing pin count before the virtual address is allocated. The proper place to fix this would be in gem, inside of i915_vma_pin(). But we don't have that yet so take the short cut as a intermediate solution. Testcase: igt/gem_ctx_thrash Signed-off-by:
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Mika Kuoppala authored
Lay out scratch page structure in similar manner than other paging structures. This allows us to use the same tools for setup and teardown. Signed-off-by:
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Mika Kuoppala authored
Make paging structure type agnostic *_px macros to access page dma struct, the backing page and the dma address. This makes the code less cluttered on internals of i915_page_dma. v2: Superfluous const -> nonconst removed v3: Rebased Signed-off-by:
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Mika Kuoppala authored
As there is flushing involved when we have done the cpu write, make functions for mapping for cpu space. Make macros to map any type of paging structure. v2: Make it clear tha flushing kunmap is only for ppgtt (Ville) v3: Flushing fixed (Ville, Michel). Removed superfluous semicolon Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Mika Kuoppala authored
When we setup page directories and tables, we point the entries to a to the next level scratch structure. Make this generic by introducing a fill_page_dma which maps and flushes. We also need 32 bit variant for legacy gens. v2: Fix flushes and handle valleyview (Ville) v3: Now really fix flushes (Michel, Ville) Reviewed-by:
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Mika Kuoppala authored
This has slipped in somewhere but it was harmless as we check the page pointer before teardown. Signed-off-by:
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Mika Kuoppala authored
All the paging structures are now similar and mapped for dma. The unmapping is taken care of by common accessors, so don't overload the reader with such details. v2: Be consistent with goto labels (Michel) Signed-off-by:
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Mika Kuoppala authored
All our paging structures have struct page and dma address for that page. Add struct for page/dma address pairs and use it to make the setup and teardown for different paging structures identical. Include the page directory offset also in the struct for legacy gens. Rename it to clearly point out that it is offset into the ggtt. v2: Add comment about ggtt_offset (Michel) Signed-off-by:
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Mika Kuoppala authored
The legacy mode mm switch and the execlist context assignment needs dma address for the page directories. Introduce a function that encapsulates the scratch_pd dma fallback if no pd is found. v2: Rebase, s/ring/req Signed-off-by:
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Mika Kuoppala authored
We can have exactly 4GB sized ppgtt with 32bit system. size_t is inadequate for this. v2: Convert a lot more places (Daniel) Signed-off-by:
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Mika Kuoppala authored
Check the allocation area against the known end of address space instead of against fixed value. v2: Return ENODEV on internal bugs (Chris) Signed-off-by:
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Mika Kuoppala authored
When we touch gen8+ page maps, mark them dirty like we do with previous gens. v2: Update comment (Joonas) Signed-off-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by:
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- 25 Jun, 2015 2 commits
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Ville Syrjälä authored
Currently we don't have any real indication when a pipe gets enabled/disabled. Add some. Signed-off-by:
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Ville Syrjälä authored
Avoid some 'switch (plane->type)' by storing the fronbuffer_bits in intel_plane. Signed-off-by:
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- 24 Jun, 2015 5 commits
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Bob Paauwe authored
The registers and process differ from other platforms. If the hardware was programmed incorrectly, this will return invalid cdclk values, which should then cause reprogramming of the hardware. v2(Matt): Return 19.2 MHz when DE PLL is disabled (Ville) v3: Make less assumptions about the hardware state (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Imre Deak <imre.deak@intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
Matt Roper <matthew.d.roper@intel.com> Reviewed-by:
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Tvrtko Ursulin authored
Currently object size is returned for the rotated VMA size which can be bigger than the rotated view itself. Since the binding code pads all excess size with scratch pages the only minor issue with this is wasting some GGTT space, but still feels nicer to fix and report the real size. v2: Rebase for tracking size in bytes instead of pages. Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by:
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Tvrtko Ursulin authored
This way data is available as soon as the view is passed into the call chain. v2: Store size in bytes instead of pages under the appropriate name. (Chris Wilson) v3: Use uint64_t instead of size_t. (Daniel Vetter) Signed-off-by:
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Tvrtko Ursulin authored
It is only used in logging and it doesn't need to exist on its own. Also it was misleading to log view size as object size. v2: Improve commit message. (Joonas Lahtinen) Signed-off-by:
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Daniel Vetter authored
With the new DRRS code it kinda sticks out, and we never managed to get this to work well enough without causing issues. Time to wave goodbye. I've decided to keep the logic for programming the reduced clocks intact, but everything else is gone. If anyone ever wants to resurrect this we need to redo it all anyway on top of the frontbuffer tracking. Signed-off-by:
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- 23 Jun, 2015 1 commit
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Imre Deak authored
This typo lead to the crtc scaler getting enabled incorrectly and an evantual state checker mismatch about the scaler_id. Signed-off-by:
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