- 10 Jul, 2014 8 commits
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Daniel Vetter authored
Luckily the bit definitions match, but it's still confusing to use one when handling the other. So sprinkle some OCD over the #defines to make them match and use the right version in each place. Maybe we should unify these definitions completely, but that can always be done sometime in the future. Reviewed-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
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Daniel Vetter authored
SPLL would be a reference clock we could potentially share, especially if we want to use the SSC mode. But currently we don't, so let's rip out this complexity for a simpler conversion to the new display pll framework. Reviewed-by:
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Daniel Vetter authored
All the other checks also check hw state, so checking our software refcounts for the plls looks a bit odd. Also this will simplify the conversion over to the shared dpll framework, which itself has massive amounts of checks to make sure that we never leave a display pll enabled when we shouldn't. So after that conversion we should stil have a good enough coverage of asserts for entering pc8/runtime pm on hsw/bdw. Reviewed-by:
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Matt Roper authored
Add !mutex_is_locked() checks to intel_pin_and_fence_fb_obj() and intel_unpin_fb_obj() to help catch failures to grab struct_mutex when operating on fb objects. Signed-off-by:
Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
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Matt Roper authored
intel_primary_plane_{setplane,disable} were lacking struct_mutex locking around their GEM operations. Signed-off-by:Damien Lespiau <damien.lespiau@intel.com> Signed-off-by:
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Paulo Zanoni authored
Otherwise we will print some WARNs when we read registers and the machine is suspended. Testcase: igt/pm_rpm/debugfs-read Cc: Ben Widawsky <ben@bwidawsk.net> Signed-off-by:
Ben Widawsky <ben@bwidawsk.net> Signed-off-by:
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Paulo Zanoni authored
On HSW, the D_COMP register can be accessed through the mailbox (read and write) or through MMIO on a MCHBAR offset (read only). On BDW, the access should be done through MMIO on another address. So to account for all these cases, create hsw_read_dcomp() with the correct implementation for reading, and also fix hsw_write_dcomp() to do the correct thing on BDW. With this patch, we can now get back from the PC8+ state on BDW. We were previously getting a black screen and lots of dmesg errors. Please notice that the bug only happens when you actually reach the PC8+ states, not when you only allow it. Testcase: igt/pm_rpm/rte Signed-off-by:
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Paulo Zanoni authored
That function can be used to write anything on D_COMP, not just disable it, so print a more appropriate message. Signed-off-by:
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- 09 Jul, 2014 6 commits
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Mika Kuoppala authored
CHV hard hangs on reading on 0x11100 References: https://bugs.freedesktop.org/show_bug.cgi?id=80893Signed-off-by:
Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by:
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Mika Kuoppala authored
CHV hard hangs on reading on 0x112f4. References: https://bugs.freedesktop.org/show_bug.cgi?id=80893Suggested-by:
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Mika Kuoppala authored
CHV hard hangs on reading these registers. As these have not been used since cantiga & ilk, remove the debugfs entry. References: https://bugs.freedesktop.org/show_bug.cgi?id=80893Suggested-by:
Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by:
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Mika Kuoppala authored
CHV hard hangs on reading these registers. As these have not been used since cantiga & ilk, remove the debugfs entry. References: https://bugs.freedesktop.org/show_bug.cgi?id=80893Suggested-by:
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Matt Roper authored
This should hopefully simplify the display code slightly and also solves at least one mistake in intel_pipe_set_base() where to_intel_framebuffer(fb)->obj is referenced during local variable initialization, before 'if (!fb)' gets checked. Potential uses of this macro were identified via the following Coccinelle patch: @@ expression E; @@ * to_intel_framebuffer(E)->obj @@ expression E; identifier I; @@ I = to_intel_framebuffer(E); ... * I->obj v2: Rewrite some NULL tests in terms of the obj rather than the fb. Also add a WARN() if trying to pageflip with a disabled primary plane. [Suggested by Chris Wilson] Signed-off-by:Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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Matt Roper authored
Add an intel_fb_obj() macro that returns the GEM object associated with a DRM framebuffer. This macro is safe to call on NULL framebuffers (a NULL object pointer will be returned in this case). Signed-off-by:
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- 08 Jul, 2014 14 commits
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Chris Wilson authored
On g33, the documentation states "HWS_PGA: Format = Bits 28:12 of graphics memory address (bits 31:29 MBZ)." which translates to that the address of the HWS must be below 256MiB, which is conveniently the mappable aperture. This also appears to be true (but not documented as so) for gen4 and gen5. To generalise we force it into the low mappable region for all non-LLC platforms. If we locate the HWS at the top of the GTT the machine will hard hang during boot (fails on pnv, gm45, ilk and byt, but works on snb, ivb, hsw). v2: Add comments to explain why use PIN_MAPPABLE even though we have no intention of mapping the object. (Ville) Signed-off-by:Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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Deepak S authored
With RC6 enabled, BYT has an HW issue in determining the right Gfx busyness. WA for Turbo + RC6: Use SW based Gfx busy-ness detection to decide on increasing/decreasing the freq. This logic will monitor C0 counters of render/media power-wells over EI period and takes necessary action based on these values v2: Refactor duplicate code. (Ville) v3: Reformat the comments. (Ville) v4: Enable required counters and remove unwanted code (Ville) v5: Added frequency change acceleration support and remove kernel-doc style comments. (Ville) v6: Updated comment section and Fix w/a comment. (Ville) Signed-off-by:
Deepak S <deepak.s@linux.intel.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Chris Wilson authored
For whatever reason, MI_DISPLAY_FLIP fails to change tiling mode on Baytrail, so just use CPU driven mmio flips instead. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76176Signed-off-by:
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Chris Wilson authored
We currently see random GPU hangs when using RCS flips with multiple pipes on Ivybridge. Now that we have mmio flips, we can fairly cheaply fallback to using CPU driven flips instead. Signed-off-by:
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Oscar Mateo authored
So that we isolate the legacy ringbuffer submission mechanism, which becomes a good candidate to be abstracted away. This is prep-work for Execlists (which will its own workload submission mechanism). No functional changes. Reviewed-by:
Oscar Mateo <oscar.mateo@intel.com> Reviewed-by:
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Oscar Mateo authored
Again, it's low-level enough to simply take a ringbuf and nothing else. Trivial change. Reviewed-by:
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Oscar Mateo authored
It's simple enough that it doesn't need to know anything about the engine. Trivial change. Reviewed-by:
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Oscar Mateo authored
More prep work: with Execlists, we are going to start creating a lot of extra ringbuffers soon, so these functions are handy. No functional changes. v2: rename allocate/destroy_ring_buffer to alloc/destroy_ringbuffer_obj because the name is more meaningful and to mirror a similar function in the context world: i915_gem_alloc_context_obj(). Change suggested by Brad Volkin. Reviewed-by:
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Oscar Mateo authored
A bit of background on the context elements. Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by:
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Oscar Mateo authored
This is an Execlists preparatory patch, since they make context ID become an overloaded term: - In the software, it was used to distinguish which context userspace was trying to use. - In the BSpec, the term is used to describe the 20-bits long field the hardware uses to it to discriminate the contexts that are submitted to the ELSP and inform the driver about their current status (via Context Switch Interrupts and Context Status Buffers). Initially, I tried to make the different meanings converge, but it proved impossible: - The software ctx->id is per-filp, while the hardware one needs to be globally unique. - Also, we multiplex several backing states objects per intel_context, and all of them need unique HW IDs. - I tried adding a per-filp ID and then composing the HW context ID as: ctx->id + file_priv->id + ring->id, but the fact that the hardware only uses 20-bits means we have to artificially limit the number of filps or contexts the userspace can create. The ctx->user_handle renaming bits are done with this Cocci patch (plus manual frobbing of the struct declaration): @@ struct intel_context c; @@ - (c).id + c.user_handle @@ struct intel_context *c; @@ - (c)->id + c->user_handle Also, while we are at it, s/DEFAULT_CONTEXT_ID/DEFAULT_CONTEXT_HANDLE and change the type to unsigned 32 bits. v2: s/handle/user_handle and change the type to uint32_t as suggested by Chris Wilson. Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> (v1) Signed-off-by: -
Oscar Mateo authored
We have already advanced that Logical Ring Contexts have their own kind of backing objects, but everything will be better explained in the Execlists series. For now, suffice it to say that the current backing object is only ever used with the render ring, so we're making this fact more explicit (which is a good reason on its own). As for the is_initialized flag, we only use to signify that the render state has been initialized (a.k.a. golden context, a.k.a. null context). It doesn't mean anything for the other engines, so make that distinction obvious. Done with the following Coccinelle patch (plus manual frobbing of the struct): @@ struct intel_context c; @@ - (c).obj + c.legacy_hw_ctx.rcs_state @@ struct intel_context *c; @@ - (c)->obj + c->legacy_hw_ctx.rcs_state @@ struct intel_context c; @@ - (c).is_initialized + c.legacy_hw_ctx.initialized @@ struct intel_context *c; @@ - (c)->is_initialized + c->legacy_hw_ctx.initialized This Execlists prep-work patch has been suggested by Chris Wilson and Daniel Vetter separately. Initially, it was two separate patches: drm/i915: Rename ctx->obj to ctx->rcs_state drm/i915: Make it obvious that ctx->id is merely a user handle Signed-off-by: -
Oscar Mateo authored
This is preparatory work for Execlists: we plan to use it later to allocate our own context objects (since Logical Ring Contexts do not have the same kind of backing objects). No functional changes. Reviewed-by:
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Imre Deak authored
To achieve further power savings during system freeze (aka connected standby, or s0ix) we have to send a PCI_D1 opregion notification. As the information about the state we're entering (system freeze, suspend to ram or suspend to disk) is only available through the ACPI subsystem, make this support depend on the relevant kconfig option. Things will still work if this option isn't set, albeit with less than optimial power saving. This also fixes a compile breakage when the option is not set introduced in commit e5747e3a Author: Jesse Barnes <jbarnes@virtuousgeek.org> Date: Thu Jun 12 08:35:47 2014 -0700 drm/i915: send proper opregion notifications on suspend/resume Reported-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
Imre Deak <imre.deak@intel.com> Reviewed-by:
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Chris Wilson authored
Make the assumption that media workloads are not as latency sensitive for __wait_seqno, and that upclocking the GPU does not affect the BLT engine. Under that assumption, we only wait to forcibly upclock the GPU when we are stalling for results from the render pipeline. Signed-off-by:
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- 07 Jul, 2014 12 commits
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Jesse Barnes authored
With the new checks in place, we can see we're doing things backwards, so fix them up per the spec. Signed-off-by:
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Rodrigo Vivi authored
Signed-off-by:
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Ben Widawsky authored
As Ville points out, it's possible/probable we don't actually need this. Potentially, this validates the letter of the spec, and not the spirit. Ville: > I discussed this on irc w/ Ben, and I was suggesting we don't need to > poll. Polling apparently can be used as a workaround for certain > hardware issues, but it looks like those issues shouldn't affect us, > for the momemnt at least. So my suggestion was to try w/o polling > first (since there could be some power cost to polling) and add the > poll bit if problems arise. Rodrigo: Spec suggests this as an W/A for GT3. However semaphores didn't worked in my BDW GT2 on Signal Mode. So pool mode is definitely needed. Reviewed-by:
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Ben Widawsky authored
Simple debugfs file to display the current state of semaphores. This is useful if you want to see the state without hanging the GPU. NOTE: This patch is optional to the series. NOTE2: Like the GPU error state collection, the reads are currently incoherent. v2 (Rodrigo): * Iterate only on active rings. * s/ring_buffer/engine_cs. Reviewed-by:
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Ben Widawsky authored
Since the semaphore information is in an object, just dump it, and let the user parse it later. NOTE: The page being used for the semaphores are incoherent with the CPU. No matter what I do, I cannot figure out a way to read anything but 0s. Note that the semaphore waits are indeed working. v2: Don't print signal, and wait (they should be the same). Instead, print sync_seqno (Chris) v3: Free the semaphore error object (Chris) v4: Fix semaphore offset calculation during error state collection (Ville) v5: VCS2 rebase Make semaphore object error capture coding style consistent (Ville) Do the proper math for the signal offset (Ville) v6: Fix small conflicts on rebase and s/ring_buffer/engine_cs (Rodrigo) Reviewed-by:
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Ben Widawsky authored
v2: s/ring_buffer/engine_cs (Rodrigo) Reviewed-by:
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Rodrigo Vivi authored
Ipehr just carries Dword 0 and on Gen 8, offsets are located on Dword 2 and 3 of MI_SEMAPHORE_WAIT. This implementation was based on Ben's work and on Ville's suggestion for Ben Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Ben Widawsky <ben@bwidawsk.net> Signed-off-by:
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Ben Widawsky authored
Semaphore waits use a new instruction, MI_SEMAPHORE_WAIT. The seqno to wait on is all well defined by the table in the previous patch. There is nothing else different from previous GEN's semaphore synchronization code. v2: Update macros to not require the other ring's ring->id (Chris) v3: Add missing VCS2 gen8_ring_wait init besides s/ring_buffer/engine_cs (Rodrigo) Reviewed-by: -
Ben Widawsky authored
Semaphore signalling works similarly to previous GENs with the exception that the per ring mailboxes no longer exist. Instead you must define your own space, somewhere in the GTT. The comments in the code define the layout I've opted for, which should be fairly future proof. Ie. I tried to define offsets in abstract terms (NUM_RINGS, seqno size, etc). NOTE: If one wanted to move this to the HWSP they could. I've decided one 4k object would be easier to deal with, and provide potential wins with cache locality, but that's all speculative. v2: Update the macro to not need the other ring's ring->id (Chris) Update the comment to use the correct formula (Chris) v3: Move the macros the ringbuffer.h to prevent churn in next patch (Ville) v4: Fixed compilation rebase conflict commit 1ec9e26d Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Fri Feb 14 14:01:11 2014 +0100 drm/i915: Consolidate binding parameters into flags v5: VCS2 rebase Replace hweight_long with hweight32 v6 (Rodrigo): * Add missed VC2 gen8 ring signal init * fixing conflicst on rebase * minor fixes on address table * remove WARN_ON Reviewed-by:
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Ben Widawsky authored
With the ring mask we now have an easy way to know the number of rings in the system, and therefore can accurately predict the number of dwords to emit for semaphore signalling. This was not possible (easily) previously. There should be no functional impact, simply fewer instructions emitted. While we're here, simply do the round up to 2 instead of the fancier rounding we did before, which rounding up per mbox, ie 4. This also allows us to drop the unnecessary MI_NOOP, so not really 4, 3. v2: Use 3 dwords instead of 4 (Ville) Do the proper calculation to get the number of dwords to emit (Ville) Conditionally set .sync_to when semaphores are enabled (Ville) v3: Rebased on VCS2 Replace hweight_long with hweight32 (Ville) v4: Pull out the accidentally squashed hunk from the next patch after rebase (Daniel). v5: Fix conflict after rebase (Rodrigo) Reviewed-by:
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Ben Widawsky authored
Gen8 has already had some differentiation with how it handles rings. Semaphores bring yet more differences, and now is as good a time as any to do the split. Also, since gen8 doesn't actually use semaphores up until this point, put the proper "NULL" values in for the mbox info. v2: v1 had a stale commit message v3: Move everything in the is_semaphore_enabled() check v4: VCS2 rebase Remove double assignment of signal in render ring (Ville) v5: Adding missed VCS2 signal init on gen8+ (Rodrigo) Reviewed-by:
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Rodrigo Vivi authored
ring index calculation table was out of date after other rings were added, although the formula is flexible and scale when adding new rings. So this patch just update the comments and add a brief explanation why to use sync_seqno[ring index]. Signed-off-by:
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