- 30 Mar, 2018 4 commits
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José Roberto de Souza authored
This is a register to help debug what is in the last SDP VSC packet revived by sink. Signed-off-by:
José Roberto de Souza <jose.souza@intel.com> Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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José Roberto de Souza authored
To comply with eDP1.4a this bit should be set when enabling PSR2. Signed-off-by:
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Chris Wilson authored
As intel_wait_for_register_fw() may use, and if successful only use, a busy-wait loop, the might_sleep() warning is a little over-zealous. Restrict it to a might_sleep_if() a slow timeout is specified (and so the caller authorises use of a usleep). Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180329224519.13598-2-chris@chris-wilson.co.uk
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Chris Wilson authored
Only sleep and repeat when asked for a full device reset (ALL_ENGINES) and avoid using sleeping waits when asked for a per-engine reset. The goal is to be able to use a per-engine reset from hardirq/softirq/timer context. A consequence is that our individual wait timeouts are a thousand times shorter, on the order of a hundred microseconds rather than hundreds of millisecond. This may make hitting the timeouts more common, but hopefully the fallover to the full-device reset will be sufficient to pick up the pieces. Note, that the sleeps inside older gen (pre-gen8) have been left as they are only used in full device reset mode. Signed-off-by:
Michel Thierry <michel.thierry@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180329224519.13598-1-chris@chris-wilson.co.uk
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- 29 Mar, 2018 8 commits
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Lionel Landwerlin authored
This will make it easier to spot issues related to config creation/usage. Signed-off-by:
Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by:
Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180326090831.22686-9-lionel.g.landwerlin@intel.com
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Lionel Landwerlin authored
We had a generic field name used across 2 registers but it feels like it's clearer we make it obvious what register this field belongs to. Signed-off-by:
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Lionel Landwerlin authored
This was added by mistake in commit 28964cf2 ("drm/i915/perf: disable NOA logic when not used"). Signed-off-by:
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Lionel Landwerlin authored
In commit d7965152 ("drm/i915: Enable i915 perf stream for Haswell OA unit") the enable/disable vfunc hadn't appear yet and the same function would deal with enabling/disabling the OA unit. This was split later on for gen8 but the gen7 retained some code that isn't actually useful anymore. Signed-off-by:
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Lionel Landwerlin authored
We've been a bit loose about this opening parameter. We should only add the flag for writing OA reports when the value of this parameter is != 0. Signed-off-by:
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Lionel Landwerlin authored
No significant changes from either context offsets, nor report formats, nor register whitelist. v2: Also drop slice/unslice clock ratio changes (Matt) Signed-off-by:
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Chris Wilson authored
When we include a request's global_seqno in a GEM_TRACE it often helps to know how that relates to the current breadcrumb as seen by the hardware. Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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Michel Thierry authored
Probably lost while rebasing commit eacd8391 ("drm/i915/guc: Keep GuC interrupts enabled when using GuC"). Not really needed since i915_gem_init_hw is called before uc_resume, but it brings symmetry to uc_suspend. Signed-off-by:
Michał Winiarski <michal.winiarski@intel.com> Signed-off-by:
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- 28 Mar, 2018 14 commits
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Michal Wajdeczko authored
During debug we may want to investigate all communication from the Guc. Add proper tracing macros in debug config. v2: convert remaining DRM_DEBUG into new CT_DEBUG (Michal) v3: use dedicated Kconfig (Daniele) v4: checkpatch Signed-off-by:
Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Acked-by:
Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by:
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Michal Wajdeczko authored
When running on platform with CTB based GuC communication enabled, GuC to Host event data will be delivered as CT request message. However, content of the data[1] of this CT message follows format of the scratch register used in MMIO based communication, so some code reuse is still possible. v2: filter disabled messages (Daniele) Signed-off-by:
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Michal Wajdeczko authored
Requests are read from CT in the irq handler, but actual processing will be done in the work thread. Processing of specific actions will be added in the upcoming patches. v2: don't use GEM_BUG_ON (Chris) don't kmalloc too large buffer (Michal) v3: rebased v4: don't name it 'dispatch' (Michel) and fix checkpatch add some documentation (Michal) Signed-off-by: -
Michal Wajdeczko authored
Instead of returning small data in response status dword, GuC may append longer data as response message payload. If caller provides response buffer, we will copy received data and use number of received data dwords as new success return value. We will WARN if response from GuC does not match caller expectation. v2: fix timeout and checkpatch warnings (Michal) v3: fix checkpatch again (Michel) update wait function name (Michal) no need for spinlock_irqsave (MichalWi) no magic numbers (MichalWi) must check before use (Jani) add some more documentation (Michal) v4: update documentation (Michal) Signed-off-by: -
Michal Wajdeczko authored
In next patch we will introduce another way of waiting for the response that will use RECV buffer. To avoid misleading names, rename old wait function to reflect the fact that it is based on descriptor update. v2: fix comment style (Michal) v3: use more specific name (Michel) Signed-off-by:
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Michal Wajdeczko authored
GuC can respond to our commands not only by updating SEND buffer descriptor, but can also send a response message over RECV buffer. Guc can also send unsolicited request messages over RECV buffer. Let's start reading those messages and make placeholders for actual response/request handlers. v2: misc improvements (Michal) v3: change response detection (Michal) invalid status is protocol error (Michal) v4: rebase v5: fix checkpatch (Michel) don't use fields before check (Jani) add some documentation (Michal) Signed-off-by: -
Michal Wajdeczko authored
On platforms with CTB based GuC communications, we will handle GuC events in a different way. Let's make event handler a virtual function to allow easy switch between those variants. Credits-to: Oscar Mateo <oscar.mateo@intel.com> Signed-off-by:
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Michal Wajdeczko authored
We're using data encoded in the status MMIO as return value from send function, but GuC may also write more data in remaining MMIO regs. Let's copy content of these registers to the buffer provided by caller. v2: new line (Michel) v3: updated commit message Signed-off-by:
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Michal Wajdeczko authored
This is a preparation step for the upcoming patches. We already can return some small data decoded from the command status, but we will need more in the future. v2: add explicit response buf size v3: squash with helper patch Signed-off-by:
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Michal Wajdeczko authored
GuC may return additional data in the response message. Format and meaning of this data is action specific. We will use this non-negative data as a new success return value. Currently used actions don't return data that way yet. v2: fix prohibited space after '~' (Michel) update commit message (Daniele) v3: rebase Signed-off-by: -
Michal Wajdeczko authored
As we are going to extend our use of MMIO based communication, try to explain its mechanics and update corresponding definitions. v2: fix checkpatch MACRO_ARG_REUSE Signed-off-by:
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Chris Wilson authored
Tvrtko uncovered a fun issue with recovering from a wedge device. In his tests, he wedged the driver by injecting an unrecoverable hang whilst a batch was spinning. As we reset the gpu in the middle of the spinner, when resumed it would continue on from the next instruction in the ring and write it's breadcrumb. However, on wedging we updated our bookkeeping to indicate that the GPU had completed executing and would restart from after the breadcrumb; so the emission of the stale breadcrumb from before the reset came as a bit of a surprise. A simple fix is to when rebinding the context into the GPU, we update the ring register state in the context image to match our bookkeeping. We already have to update the RING_START and RING_TAIL, so updating RING_HEAD as well is trivial. This works because whenever we unbind the context, we keep the bookkeeping in check; and on wedging we unbind all contexts. Testcase: igt/gem_eio Signed-off-by:
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Paulo Zanoni authored
The only thing that differs here is that the crystal clock freq now has four possible values. This patch gets rid of the "Unknown gen, unable to compute..." message at boot for gen11. Reviewed-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180109232835.11478-18-paulo.r.zanoni@intel.com
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Yaodong Li authored
GuC Address Space and WOPCM Layout diagrams won't be generated correctly by sphinx build if not using proper reST syntax. This patch uses reST literal blocks to make sure GuC Address Space and WOPCM Layout diagrams to be generated correctly, and it also corrects some errors in the diagram description. v2: - Fixed errors in diagram description v3: - Updated GuC Address Space kernel-doc based on Michal's suggestion v4: - Added WOPCM layout and GuC address space docs into i915.rst (Joonas) Signed-off-by:
Jackie Li <yaodong.li@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by:
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- 27 Mar, 2018 11 commits
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Lucas De Marchi authored
Remove 4-bytes hole in this struct an reorder tables accordingly. This also changes the last element of the tables to be more future-proof. Signed-off-by:
Lucas De Marchi <lucas.demarchi@intel.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Lucas De Marchi authored
Replace all users of pll->flags to use pll->info.flags. Signed-off-by:
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Lucas De Marchi authored
Replace all users of pll->id to use pll->info->id. In functions using this more than once it was preferred to add an id variable to make the code easier to read. Signed-off-by:
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Lucas De Marchi authored
Replace all users of pll->name to use pll->info->name. Signed-off-by:
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Lucas De Marchi authored
Replace all users of pll->funcs.* to use pll->info->funcs->*. The extra indirection here is not on any critical path and we can leave all const data together. Signed-off-by:
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Lucas De Marchi authored
This way we can stop copying fields from dpll_info to intel_shared_dpll one by one. The migration of each field will come on separate patches. Signed-off-by:
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Lucas De Marchi authored
This will allow the struct to be embedded in intel_shared_dpll. Signed-off-by:
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Lucas De Marchi authored
In some places we end up converting switch statements to a series of if/else, particularly when introducing helper functions to handle a group of cases. It's tempting to either leave a wrong warning (since now we don't have a switch case anymore) or to convert to WARN(1, ...), but we can just provide a better message and avoid the doubt when such conversions arrise. Introducing a warning inside i915_driver_load() just for tests we get: [ 4535.233717] Missing case (ret == 0) [ 4535.233868] WARNING: CPU: 1 PID: 795 at drivers/gpu/drm/i915/i915_drv.c:1341 i915_driver_load+0x42/0x10e0 [i915] which is clear enough. v2: remove __func__ since this is already on the warning. Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Chris Wilson authored
If the request is still waiting on external fences, it has not yet been submitted to the HW queue and so we can forgo kicking the submission tasklet when re-evaluating its priority. This should have no impact other than reducing the number of tasklet wakeups under signal heavy workloads (e.g. switching between engines). v2: Use prebaked container_of() References: f6322edd ("drm/i915/preemption: Allow preemption between submission ports") Signed-off-by:
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Chris Wilson authored
For the off-chance we have an interrupt posted and haven't processed the CSB. v2: Include tasklet enable/disable state for good measure. Signed-off-by:
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Chris Wilson authored
When cancelling the requests and clearing out the ports following a successful preemption completion, also clear the active flag. I had assumed that all preemptions would be followed by an immediate dequeue (preserving the active user flag), but under rare circumstances we may be triggering a preemption for the second port only for it to have completed before the preemotion kicks in; leaving execlists->active set even though the system is now idle. We can clear the flag inside the common execlists_cancel_port_requests() as the other users also expect the semantics of active being cleared. Fixes: f6322edd ("drm/i915/preemption: Allow preemption between submission ports") Signed-off-by:
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- 23 Mar, 2018 3 commits
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Paulo Zanoni authored
Protect the macro parameters with parens in order to avoid priority issues on macro evaluation when the macro argument is not a single operand. This is not a problem today, but it could be in the future. I found this while reviewing a patch that introduces new callers for the macros. v2: Rebase. Reference: commit 04416108 ("drm/i915/cnl: Add registers related to voltage swing sequences.") Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by:
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Nabendu Maiti authored
Gen11 supports upto 5k source scaling v2: Re-factoring of code as per review v3: Corrected max Vertical size and indentation v4: Added max Vertical dst size in same patch Reviewed-by:
Nabendu Maiti <nabendu.bikash.maiti@intel.com> Signed-off-by:
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Dhinakaran Pandiyan authored
Extend enum hpd_pin to port F so that we can start using this for ICL. v2: Rebase. Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by:
Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by:
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