- 05 Jun, 2020 2 commits
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Chris Wilson authored
Reduce the 3 relocation paths down to the single path that accommodates all. The primary motivation for this is to guard the relocations with a natural fence (derived from the i915_request used to write the relocation from the GPU). The tradeoff in using async gpu relocations is that it increases latency over using direct CPU relocations, for the cases where the target is idle and accessible by the CPU. The benefit is greatly reduced lock contention and improved concurrency by pipelining. Note that forcing the async gpu relocations does reveal a few issues they have. Firstly, is that they are visible as writes to gem_busy, causing to mark some buffers are being to written to by the GPU even though userspace only reads. Secondly is that, in combination with the cmdparser, they can cause priority inversions. This should be the case where the work is being put into a common workqueue losing our priority information and so being executed in FIFO from the worker, denying us the opportunity to reorder the requests afterwards. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200604211457.19696-1-chris@chris-wilson.co.uk
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José Roberto de Souza authored
This parameter is meant to be used when PSR issues are found as some issues in the past was due wrong values set in VBT so this would be a quick and easy way to ask users or for us to check if the issue is due VBT values. Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com> Signed-off-by:
José Roberto de Souza <jose.souza@intel.com> Reviewed-by:
Gwan-gyeong Mun <gwan-gyeong.mun@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200520212756.354623-1-jose.souza@intel.com
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- 04 Jun, 2020 15 commits
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José Roberto de Souza authored
RKL doesn't have PSR2 HW tracking, it was replaced by software/manual tracking. The driver is required to track the areas that needs update and program hardware to send selective updates. So until the software tracking is implemented, PSR2 needs to be disabled for platforms without PSR2 HW tracking. BSpec: 50422 BSpec: 50424 Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
Matt Roper <matthew.d.roper@intel.com> Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200603211529.3005059-15-matthew.d.roper@intel.com
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Matt Roper authored
There are a couple places in our driver that loop over transcoders A..D for gen11+; since RKL only has three pipes/transcoders, this can lead to unclaimed register reads/writes. We should add checks for transcoder existence where appropriate. v2: Move one transcoder check that wound up in the wrong function after conflict resolution. It belongs in bdw_get_trans_port_sync_config rather than bxt_get_dsi_transcoder_state. v3: Switch loops to use for_each_cpu_transcoder_masked() since this iterator already checks the platform's transcoder mask for us. (Ville) Cc: Aditya Swarup <aditya.swarup@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:Ville Syrjälä <ville.syrjala@linux.intel.com>
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Matt Roper authored
RKL uses DDI's A, B, TC1, and TC2 which need to map to combo PHY's A-D. Bspec: 49181 Cc: Imre Deak <imre.deak@intel.com> Cc: Aditya Swarup <aditya.swarup@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by:
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José Roberto de Souza authored
As latest update we have now 2 voltage swing tables for DP over DKL PHY with only one difference in Level 0 pre-emphasis 3. So with 2 tables for DP is time to have one single function to return all DKL voltage swing tables. BSpec: 49292 Cc: Khaled Almahallawy <khaled.almahallawy@intel.com> Signed-off-by:
Khaled Almahallawy <khaled.almahallawy@intel.com> Reviewed-by: Khaled Almahallawy<khaled.almahallawy@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200602205424.138143-1-jose.souza@intel.com
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Stanislav Lisovskiy authored
Previous patch didn't take into account all pipes but only those in state, which could cause wrong CDCLK conclcusions and calculations. Also there was a severe issue with min_cdclk being assigned to 0 every compare cycle. Too bad this was found by me only after merge. This could be also causing the issues in test, however not clear - anyway marking this as fixing the "Adjust CDCLK accordingly to our DBuf bw needs". v2: - s/pipe/crtc->pipe/ - save a bit of instructions by skipping inactive pipes, without getting 0 DBuf slice mask for it. Signed-off-by:Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Fixes: cd191546 ("drm/i915: Adjust CDCLK accordingly to our DBuf bw needs") Reviewed-by:
Manasi Navare <manasi.d.navare@intel.com> Signed-off-by:
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Matt Roper authored
Certain combo PHYs act as a compensation master to other PHYs and need to be initialized with a special irefgen bit in the PORT_COMP_DW8 register. Previously PHY A was the only compensation master (for PHYs B & C), but RKL adds a fourth PHY which is slaved to PHY C instead. Bspec: 49291 Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: José Roberto de Souza <jose.souza@intel.com> Cc: Aditya Swarup <aditya.swarup@intel.com> Signed-off-by:
Anusha Srivatsa <anusha.srivatsa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200603211529.3005059-12-matthew.d.roper@intel.com
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Matt Roper authored
The pin mapping for the final two outputs varies according to which PCH is present on the platform: with TGP the pins are remapped into the TC range, whereas with CMP they stay in the traditional combo output range. Bspec: 49181 Cc: Aditya Swarup <aditya.swarup@intel.com> Signed-off-by:
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Lucas De Marchi authored
RKL uses the DDI A, DDI B, DDI USBC1, DDI USBC2 from the DE point of view, so all DDI/pipe/transcoder register use these indexes to refer to them. Combo phy and IO functions follow another namespace that we keep as "enum phy". The VBT in theory would use the DE point of view, but that does not happen in practice. Provide a table to convert the child devices to the "correct" port numbering we use. Now this is the output we get while reading the VBT: DDIA: [drm:intel_bios_port_aux_ch [i915]] using AUX A for port A (VBT) [drm:intel_dp_init_connector [i915]] Adding DP connector on [ENCODER:275:DDI A] [drm:intel_hdmi_init_connector [i915]] Adding HDMI connector on [ENCODER:275:DDI A] [drm:intel_hdmi_init_connector [i915]] Using DDC pin 0x1 for port A (VBT) DDIB: [drm:intel_bios_port_aux_ch [i915]] using AUX B for port B (platform default) [drm:intel_hdmi_init_connector [i915]] Adding HDMI connector on [ENCODER:291:DDI B] [drm:intel_hdmi_init_connector [i915]] Using DDC pin 0x2 for port B (VBT) DDI USBC1: [drm:intel_bios_port_aux_ch [i915]] using AUX D for port D (VBT) [drm:intel_dp_init_connector [i915]] Adding DP connector on [ENCODER:295:DDI D] [drm:intel_hdmi_init_connector [i915]] Adding HDMI connector on [ENCODER:295:DDI D] [drm:intel_hdmi_init_connector [i915]] Using DDC pin 0x3 for port D (VBT) DDI USBC2: [drm:intel_bios_port_aux_ch [i915]] using AUX E for port E (VBT) [drm:intel_dp_init_connector [i915]] Adding DP connector on [ENCODER:306:DDI E] [drm:intel_hdmi_init_connector [i915]] Adding HDMI connector on [ENCODER:306:DDI E] [drm:intel_hdmi_init_connector [i915]] Using DDC pin 0x9 for port E (VBT) Cc: Clinton Taylor <Clinton.A.Taylor@intel.com> Cc: Aditya Swarup <aditya.swarup@intel.com> Signed-off-by:
Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by:
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Matt Roper authored
Although we properly captured RKL's three pipes in the device info structure, we forgot to make the corresponding update to the transcoder mask. Set this field so that our transcoder loops will operate properly. Fixes: 123f62de ("drm/i915/rkl: Add RKL platform info and PCI ids") Signed-off-by:
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Chris Wilson authored
Sometimes an engine might need to keep forcewake active while it is busy submitting requests for a particular workaround. Track such nuisance with engine->fw_domain. Signed-off-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200604153145.21068-1-chris@chris-wilson.co.uk
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Chris Wilson authored
Use the plain msec_to_jiffies() rather than the _timeout variant so we round down and do not add an extra jiffy to our interval. For example, with timeslicing we do not want to err on the longer side as any fairness depends on catching hogging contexts on the GPU. Bring on CFS. Signed-off-by:
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Chris Wilson authored
If the execbuf is interrupted after building the cmdparser pipeline, and before we commit to submitting the request to HW, we would attempt to clean up the cmdparser early. While we held active references to the vma being parsed and constructed, we did not hold an active reference for the buffer pool itself. The result was that an interrupted execbuf could still have run the cmdparser pipeline, but since the buffer pool was idle, its target vma could have been recycled. Note this problem only occurs if the cmdparser is running async due to pipelined waits on busy fences, and the execbuf is interrupted. Fixes: 686c7c35 ("drm/i915/gem: Asynchronous cmdparser") Fixes: 16e87459 ("drm/i915/gt: Move the batch buffer pool from the engine to the gt") Signed-off-by:
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Clint Taylor authored
Set GS Timer to 224. Combine with Wa_1604555607 due to register FF_MODE2 not being able to be read. V2: Math issue fixed Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Caz Yokoyama <caz.yokoyama@intel.com> Cc: Matt Atwood <matthew.s.atwood@intel.com> Signed-off-by:
Clint Taylor <clinton.a.taylor@intel.com> Acked-by:
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Chris Wilson authored
Just to remove an obnoxious HAS_ENGINES(), and in the process make the code agnostic to the availabilty of any particular engine by making it exercise any and all such engines declared on the system. Signed-off-by:
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Jani Nikula authored
The reset member in i915_params was previously changed to unsigned, but this failed to change the actual module parameter. Fixes: aae970d8 ("drm/i915: Mark i915.reset as unsigned") Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200602151126.25626-1-jani.nikula@intel.com
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- 03 Jun, 2020 8 commits
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Ville Syrjälä authored
Use max() instead of hand rolling it. Signed-off-by:
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Ville Syrjälä authored
The DP spec says: "When the combination of the requested pre-emphasis level and voltage swing exceeds the capability of a DPTX, the DPTX shall set the pre-emphasis level according to the request and use the highest voltage swing it can output with the given pre-emphasis level." and "When a DPTX reads a request beyond the limits of this Standard, the DPTX shall set the pre-emphasis level according to the request and set the highest voltage swing level it can output with the given pre-emphasis level. If a DPTX is requested for 9.5dB of pre-emphasis level (may be supported for a DPTX) and cannot support that level, it shall set the pre-emphasis level to the next highest level, 6dB." Ie. we should first validate the pre-emphasis, and then select the appropriate vswing for it. Signed-off-by:
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Ville Syrjälä authored
Different platforms have different max vswing/preemph settings. Turn that into a pair vfuncs so we can decouple intel_dp.c and intel_ddi.c further. Signed-off-by:
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Ville Syrjälä authored
According to the DP spec supporting vswing 1 + preemph 2 is mandatory. We don't have the hw settings for that though. In order to pretend to follow the DP spec let's just select vswing 0 + preemph 2 in this case (the DP spec says to use the requested preemph in preference to the vswing when the requested values aren't supported). Signed-off-by:
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Ville Syrjälä authored
IBX supports vswing level 3 and pre-emphasis level 3. Don't limit it to level 2 for those. Signed-off-by:
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Ville Syrjälä authored
cpt/ppt support pre-emphasis level 3. Let's actually declare support for it, instead of clamping things to level 2. Also tweak the if-ladder in intel_dp_voltage_max() to match intel_dp_pre_emphasis_max() to make it easier to compare them. Signed-off-by:
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Chris Wilson authored
We infrequently use the direct i915 backpointer from the i915_request, so do we really need to waste the space in the struct for it? 8 bytes from the most frequently allocated struct vs an 3 bytes and pointer chasing in using rq->engine->i915? Signed-off-by:
Akeem G Abodunrin <akeem.g.abodunrin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200602220953.21178-1-chris@chris-wilson.co.uk
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Chris Wilson authored
If we injected an error (such as pretending the GuC firmware was broken), then suppress the error message as it is expected and our CI complains if it sees any *ERROR*. Signed-off-by:
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- 02 Jun, 2020 9 commits
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Chris Wilson authored
For reasons that be, the HW only allows usersace to read its own CTX_TIMESTAMP [context local HW runtime] on rcs. Make it available for all by adding it to the whitelists. v2: The change took effect from Cometlake. Signed-off-by:
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Chris Wilson authored
Cometlake is a small refresh of Coffeelake, but since we have found out a difference in the plaforms, we need to identify them as separate platforms. Since we previously took Coffeelake/Cometlake as identical, update all IS_COFFEELAKE() to also include IS_COMETLAKE(). Signed-off-by:
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Chris Wilson authored
As a timestamp will automatically update itself, it will not hold only contexts we write into it, and will change from the baseline value making us suspect that our writes are landing. As this confuses us and we would need more careful treatment to detect invalid stores into the timestamp, skip it when verifying the whitelists. Signed-off-by:
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Vivek Kasireddy authored
If an error is encountered during the DSI initialization setup, the drm connector object also needs to be cleaned up along with the encoder. The error can happen due to a missing mode in the VBT or for other reasons. v2: Rephrase the commit message to make it more clear. Cc: Jani Nikula <jani.nikula@intel.com> Cc: Vandita Kulkarni <vandita.kulkarni@intel.com> Signed-off-by:
Vivek Kasireddy <vivek.kasireddy@intel.com> Reviewed-by:
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Jani Nikula authored
Only support runtime changes through the debugfs. i915.verbose_state_checks remains an exception, and is not exposed via debugfs. This depends on IGT having been updated to use the debugfs for modifying the parameters. Cc: Juha-Pekka Heikkilä <juha-pekka.heikkila@intel.com> Cc: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@intel.com> Reviewed-by:
Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Signed-off-by:
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Jani Nikula authored
fake_lmem_start does not need to be mutable via module param sysfs. It's only used during driver probe. Fixes: 16292243 ("drm/i915/lmem: add the fake lmem region") Cc: Matthew Auld <matthew.auld@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
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Jani Nikula authored
The parameter only makes sense as a module parameter only. Fixes: c43c5a88 ("drm/i915/params: add i915 parameters to debugfs") Cc: Juha-Pekka Heikkilä <juha-pekka.heikkila@intel.com> Cc: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@intel.com> Reviewed-by:
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Chris Wilson authored
Use the central mechanism for recording and verifying that we restore the w/a for the older devices as well. Signed-off-by:
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Chris Wilson authored
Pull the routines for writing CS packets out of intel_ring_submission into their own files. These are low level operations for building CS instructions, rather than the logic for filling the global ring buffer with requests, and we will want to reuse them outside of this context. Signed-off-by:
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- 01 Jun, 2020 6 commits
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Chris Wilson authored
Allow batch buffers to read their own _local_ cumulative HW runtime of their logical context. Fixes: 0f2f3975 ("drm/i915: Add gen9 BCS cmdparsing") Signed-off-by:
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José Roberto de Souza authored
Small updates in dkl_de_emphasis_control field. BSpec: 49292 Signed-off-by:
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Chris Wilson authored
Ever noticed that our interrupt handlers are where we spend most of our time on a busy system? In part this is unavoidable as each interrupt requires to poll and reset several registers, but we can try and do so as efficiently as possible. Function old new delta ilk_irq_handler 2317 2156 -161 v2: Restore the irqreturn_t ret Function old new delta ilk_irq_handler.cold 63 72 +9 ilk_irq_handler 2221 2080 -141 A slight improvement in the baseline overnight as well! Signed-off-by:
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Ville Syrjälä authored
While the current locking/serialization of the global state suffices for protecting the obj->state access and the actual hardware reprogramming, we do have a problem with accessing the old/new states during nonblocking commits. The state computation and swap will be protected by the crtc locks, but the commit_tails can finish out of order, thus also causing the atomic states to be cleaned up out of order. This would mean the commit that started first but finished last has had its new state freed as the no-longer-needed old state by the other commit. To fix this let's just refcount the states. obj->state amounts to one reference, and the intel_atomic_state holds extra references to both its new and old global obj states. Fixes: 0ef1905e ("drm/i915: Introduce better global state handling") Signed-off-by:
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Chris Wilson authored
Our forcewake utilisation is split into categories: automatic and manual. Around bare register reads, we look up the right forcewake domain and automatically acquire and release [upon a timer] the forcewake domain. For other access, where we know we require the forcewake across a group of register reads, we manually acquire the forcewake domain and release it at the end. Again, this currently arms the domain timer for a later release. However, looking at some energy utilisation profiles, we have tried to avoid using forcewake [and rely on the natural wake up to post register updates] due to that even keep the fw active for a brief period contributes to a significant power draw [i.e. when the gpu is sleeping with rc6 at high clocks]. But as it turns out, not posting the writes immediately also has unintended consequences, such as not reducing the clocks and so conserving power while busy. As a compromise, let us only arm the domain timer for automatic forcewake usage around bare register access, but immediately release the forcewake when manually acquired by intel_uncore_forcewake_get/_put. The corollary to this is that we may instead have to take forcewake more often, and so incur a latency penalty in doing so. For Sandybridge this was significant, and even on the latest machines, taking forcewake at interrupt frequency is a huge impact. [So we don't do that anymore! Hopefully, this will spare us from still needing the mitigation of the timer for steady state execution.] Signed-off-by:
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Chris Wilson authored
If we fail during engine setup, we may leave some engines not yet setup. During the error cleanup, we have to be careful not to try and use the uninitialise engines before discarding them. [ 16.136152] RIP: 0010:__flush_work+0x198/0x1b0 [ 16.136168] Code: ff ff 8b 0b 48 8b 53 08 83 e1 08 48 0f ba 2b 03 80 c9 f0 e9 63 ff ff ff 0f 0b 48 83 c4 48 44 89 f0 5b 5d 41 5c 41 5d 41 5e c3 <0f> 0b 45 31 f6 e9 62 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f [ 16.136186] RSP: 0018:ffffc900003bb928 EFLAGS: 00010246 [ 16.136201] RAX: 0000000000000000 RBX: ffff88844f392168 RCX: 0000000000000000 [ 16.136216] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88844f392168 [ 16.136231] RBP: ffff88844f392130 R08: 0000000000000000 R09: 0000000000000001 [ 16.136246] R10: ffff888441e31e40 R11: ffff88845e329c70 R12: ffff88844f796988 [ 16.136261] R13: ffff888441e4fb80 R14: 0000000000000001 R15: ffff88844f790000 [ 16.136388] FS: 00007fecbd208880(0000) GS:ffff88845e380000(0000) knlGS:0000000000000000 [ 16.136405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.136420] CR2: 00007ff3ce748f90 CR3: 0000000457a6a001 CR4: 00000000000606e0 [ 16.136437] Call Trace: [ 16.136456] ? try_to_del_timer_sync+0x3a/0x50 [ 16.136529] intel_wakeref_wait_for_idle+0x87/0xb0 [i915] [ 16.136606] ? intel_engines_release+0x68/0xc0 [i915] [ 16.136680] intel_engines_release+0x49/0xc0 [i915] [ 16.136757] intel_gt_init+0x2f4/0x5e0 [i915] Signed-off-by:
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