- 14 Mar, 2018 1 commit
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Jackie Li authored
GuC related exported functions should start with "intel_guc_" prefix and pass intel_guc as the first parameter since its GuC related. Current guc_ggtt_offset() failed to follow this code convention and this is a problem for future patches that needs to access intel_guc data to verify the GGTT offset against the GuC WOPCM top. This patch renames the guc_ggtt_offset to intel_guc_ggtt_offset and updates the related code to pass intel_guc pointer to this function call, so that we can have a unified coding style for GuC code and also enable the future patches to get GuC related data from intel_guc to do the offset verification. Meanwhile, this patch also moves the GUC_GGTT_TOP from intel_guc_regs.h to intel_guc.h since it is not GuC register related definition. v8: - Fixed coding style issues and moved GUC_GGTT_TOP to intel_guc.h (Sagar) - Updated commit message to explain to reason and motivation to add intel_guc as the first parameter of intel_guc_ggtt_offset (Chris) v9: - Fixed code alignment issue due to line break (Chris) v10: - Removed unnecessary comments, redundant code and avoided reuse variable to avoid potential issues (Joonas) v13: - Updated the ordering of s-o-b/cc/r-b tags (Sagar) 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: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com> (v8) Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (v9) Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com> (v11) Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (v12) Reviewed-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by:
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- 13 Mar, 2018 10 commits
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Dhinakaran Pandiyan authored
What was called SRD_DEBUG(0x6F860) on HSW and BDW was renamed to PSR_MASK SKL onwards, add a note next to the macro definition. There is also a different PSR_DEBUG on SKL+ to add to the confusion. Signed-off-by:
Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Acked-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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Chris Wilson authored
If we timeout waiting for the GPU to idle, something went seriously wrong. We currently dump the engine state, but we can also dump the ftrace buffer showing our last operations (when available). In passing, note that since commit 559e040f ("drm/i915: Show the GPU state when declaring wedged", we now show the engine state twice, once in detecting the failed idle and then again on declaring wedged. v2: ftrace_dump() takes a parameter specifying whether to dump all cpu buffers or the local cpu's. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by:
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Rodrigo Vivi authored
No functional change. But let's keep definitions clean and cursor related register definitions together. v2: Fix caps x no caps on same reg. Change name to match original reg name. (by Ville). Also fix name on code s/surlive/surflive and on subject s/cur_surlife/cur surflive/. Suggested-by:Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Dhinakaran Pandiyan authored
The flag becomes misleading with flips and cursor moves not modifying it's state as HW takes care of exiting PSR (when HW tracking is enabled) Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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Rodrigo Vivi authored
So far we are using frontbuffer tracking for everything and ignoring that PSR has a HW capable HW tracking for many modern usages of GPU on Core platforms and newer Atom ones. One reason for that is that we were trying to keep same infrastructure in place for VLV/CHV than the rest of platforms. But also because when this infrastructure was created the front-buffer-tracking origin wasn't that good and stable how it is today after Paulo reworked it to attend FBC cases. However this PSR implementation without HW tracking died on gen8LP. And newer platforms are starting to demand more HW tracking specially with PSR2 cases in mind. By disabling and re-enabling PSR totally every time we believe someone is going to change the front buffer content we don't allow PSR HW tracking to do this job and specially compromising the whole idea of PSR2 case where the HW tracking detect only the damaged area and do a partial screen update. So, from now on, on the platforms that has hw_tracking let's rely more on HW tracking. This also is the case in used by other drivers and more validated by SV teams. So I hope that this will lead us to less misterious bugs. v2: Only do this for platform that actually has hw tracking. v3 from DK Do this only for flips, small gradual changes are better. Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Jim Bride <jim.bride@linux.intel.com> Cc: Vathsala Nagaraju <vathsala.nagaraju@intel.com> Signed-off-by:
Jose Roberto de Souza <jose.souza@intel.com> Signed-off-by:
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Dhinakaran Pandiyan authored
DRM_IOCTL_MODE_CURSOR results in frontbuffer flush before the cursor plane MMIOs are written to. But this flush should not be necessary for PSR as hardware tracking triggers PSR exit when MMIOs are written. As for FBC, the spec says "Flips or changes to plane size and panning" cause FBC to be nuked. Use origin == ORIGIN_FLIP so that features can ignore cursor updates in their frontbuffer_flush implementations. /sys/kernel/debug/dri/0/i915_fbc_status shows "Compressing: yes" when I move the cursor around. v3: Use ORIGIN_FLIP now that pin_to_display does not flush frontbuffer. v2: Update comment in i915_gem_object_pin_to_display_plane. (Chris) Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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Dhinakaran Pandiyan authored
i915_gem_obj_pin_to_display() calls frontbuffer_flush with origin set to DIRTYFB. The callers however are at a vantage point to decide if hardware frontbuffer tracking can do the flush for us. For example, legacy cursor updates, like flips, write to MMIO registers, which then triggers PSR flush by the hardware. Moving frontbuffer_flush out will enable us to skip a software initiated flush by setting origin to FLIP. Thanks to Chris for the idea. v2: Rebased due to Ville adding intel_plane_pin_fb(). Minor code reordering as fb_obj_flush doesn't need struct_mutex (Chris) Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by:
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Chris Wilson authored
eu_regs[] is written 2*max_slices times (like s_reg[]) but oddly read 2*max_slices + max_subslices/2 times. Allocate the array large enough for the writes to avoid overwriting our stack and worry about the logic later. Fixes: 7aa0b14e ("drm/i915: Remove variable length arrays from sseu debugfs printers") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105479Signed-off-by:
Lionel Landwerlin <lionel.g.landwerlin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180313113149.1094-1-chris@chris-wilson.co.uk
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Chris Wilson authored
VLA are strongly discouraged in the kernel due to ambiguity they impose on the limited stack space and security concerns over manipulating the stack frame. Add -Wvla to our compiler flags so that CI rejects them. Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180313004055.25411-2-chris@chris-wilson.co.uk
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Chris Wilson authored
In order to enable -Wvla to prevent new variable length arrays being used in i915.ko, we first must remove the existing VLA. Inside i915_print_sseu_info(), VLA are used as the actual size of the sseu depends on platform. Replace the VLA with the maximum required. Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180313004055.25411-1-chris@chris-wilson.co.uk
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- 12 Mar, 2018 4 commits
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Michal Wajdeczko authored
Instead of dancing around uC on reset/suspend/resume scenarios, explicitly sanitize uC when we sanitize GEM to force uC reload and start from known beginning. v2: don't forget about reset path (Daniele) sanitize uc before gem initiated full reset (Daniele) v3: drop redundant disable_communication in init_hw (Daniele) Signed-off-by:Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Michel Thierry <michel.thierry@intel.com> Reviewed-by:
Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by:
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Michal Wajdeczko authored
We are sanitizing uC related modparams together with other driver modparams in intel_sanitize_options called from i915_driver_init_hw, but this is too late for us as we will want to use USES_GUC/USES_HUC macros at earlier stage. Since our sanitizing does not require any MMIO access, we can do it in intel_uc_init_early right after we resolve firmware names. Signed-off-by:
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Chris Wilson authored
There is some redundancy between dma_fence->ops->enable_signaling (via i915_fence_enable_signaling) and our backend, intel_engine_enable_signaling() in that both levels recheck the fence status multiple times. If we convert intel_engine_enable_signaling() to return the information desired by dma_fence->ops->enable_signaling, we can reduce i915_fence_enable_signaling to a simple stub and avoid trying to reinterpret the same information. Signed-off-by:
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Rodrigo Vivi authored
WA 0884:bxt:all,cnl:*:A - "When FBC is enabled with eDP PSR, the CPU host modify writes may not get updated on the Display as expected. WA: Write 0x00000000 to CUR_SURFLIVE_A with every CPU host modify write to trigger PSR exit." We can also find on spec other cases where they describe bogus writes to cursor registers to force PSR exit with HW tracking. And it was confirmed by HW engineers that this Wa can be safely applied for any frontbuffer activity. So let's use this more and more here instead of forcibly disable and re-enable PSR everytime that we have a simple reliable flush case. Other commits improve the fbcon/fbdev use a lot, but this approach is the only when where we can get a fully reliable console with no slowness or missed frames and PSR still enabled and active. v2: - Rebase on drm-tip - (DK) Add a comment to explain that WA tells about writing 0 to CUR_SURFLIVE_A but we write to CUR_SURFLIVE(pipe). v3: Wa doesn't work on PSR2. Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by:
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- 09 Mar, 2018 15 commits
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Michal Wajdeczko authored
Error state management code was moved into separate .c unit but we didn't move related definitions into own header. v2: move also intel_display_error_state forward decl fix ("Prefer 'unsigned int' to bare use of 'unsigned'") warnings detected by checkpatch in moved code (Michal) Signed-off-by: -
Michal Wajdeczko authored
Definitions in i915_pmu.h header depend on other types and declarations that were not explicitly included. Fix that by adding related headers and forward declarations. While here, change license text to SPDX format. v2: don't drop "intel_ringbuffer.h" (Tvrtko) Signed-off-by:
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Michal Wajdeczko authored
Function i915_gem_batch_pool_init() failed to follow obj-verb naming schema. Fix that by swapping function parameters. While here, change license text to SPDX format. v2: use intel_engine_init_batch_pool (Chris) as proxy (Michal) Signed-off-by:
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Michal Wajdeczko authored
Header intel_ringbuffer.h is using definitions from i915_reg.h but forget to include it. Remove this hidden dependency by explicitly include missing header. v2: add reminder (Chris) Signed-off-by:
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Michal Wajdeczko authored
To allow future code reuse. While here, fix comment style. v2: Notifications are a separate thing - rename the handler (Sagar) Suggested-by:
Oscar Mateo <oscar.mateo@intel.com> Signed-off-by:
Michał Winiarski <michal.winiarski@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com> Reviewed-by:
Sagar Arun Kamble <sagar.a.kamble@intel.com> Signed-off-by:
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Michał Winiarski authored
We have many functions responsible for allocating different parts of GuC log runtime called from multiple places. Let's stick with keeping everything in guc_log_register instead. v2: Use more generic intel_uc_register name, keep using "misc" suffix (Michał) s/dev_priv/i915 (Sagar) Make guc_log_relay_* static (sparse) Signed-off-by: -
Michał Winiarski authored
We plan to decouple log runtime (mapping + relay) from verbosity control. Let's tidy the code now to reduce the churn in the following patches. v2: Tidy macros, keep debug messages, use helper var for enable, correct typo (Michał) Fix incorrect input validaction (Sagar) Signed-off-by: -
Lyude Paul authored
Signed-off-by:
Lyude Paul <lyude@redhat.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:
Manasi Navare <manasi.d.navare@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180308232421.14049-2-lyude@redhat.com
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Chris Wilson authored
tasklet_kill() will spin waiting for the current tasklet to be executed. However, if tasklet_disable() has been called, then the tasklet is never executed but permanently put back onto the runlist until tasklet_enable() is called. Ergo, we cannot use tasklet_kill() inside a disable/enable pair. This is the case when we call set-wedge from inside i915_reset(), and another request was submitted to us concurrent to the reset. Fixes: 963ddd63 ("drm/i915: Suspend submission tasklets around wedging") Signed-off-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180307134226.25492-6-chris@chris-wilson.co.uk
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Chris Wilson authored
Similar to the staging around handling of engine->submit_request, we need to stop adding to the execlists->queue prior to calling engine->cancel_requests. cancel_requests will move requests from the queue onto the timeline, so if we add a request onto the queue after that point, it will be lost. Fixes: af7a8ffa ("drm/i915: Use rcu instead of stop_machine in set_wedged") Signed-off-by:
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Chris Wilson authored
Include ring->emit and ring->space alongside ring->(head,tail) when printing debug information. Signed-off-by:
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Chris Wilson authored
When wedged, we do not update the ring->tail as we submit the requests causing us to leak the ring->space upon cleaning up the wedged driver. We can just use the value stored in rq->tail, and keep the submission backend details away from set-wedge. Signed-off-by:
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Chris Wilson authored
Before we reset the GPU after marking the device as wedged, we wait for all the remaining requests to be completed (and marked as EIO). Afterwards, we should flush the request lists so the next batch start with the driver in an idle state. Signed-off-by:
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Jani Nikula authored
We don't want to preserve the DDI A 4 lane bit on ICL. Fixes: 3d2011cf ("drm/i915/icl: remove port A/E lane sharing limitation.") Cc: Mahesh Kumar <mahesh1.kumar@intel.com> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by:
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Chris Wilson authored
Originally we were inlining gen8_cs_irq_handler() and so expected the compiler to constant-fold away the irq_shift (so we had hardcoded it as opposed to use engine->irq_shift). However, we dropped the inline given the proliferation of gen8_cs_irq_handler()s. If we pull the shifting of the iir into the caller, we can shrink the code still further: add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-34 (-34) Function old new delta gen8_cs_irq_handler 123 118 -5 gen8_gt_irq_handler 261 248 -13 gen11_irq_handler 722 706 -16 v2: Drop gen11_cs_irq_handler now that it is a simple stub around gen8_cs_irq_handler (Daniele) References: 5d3d69d5 ("drm/i915: Stop inlining the execlists IRQ handler") Signed-off-by:
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- 08 Mar, 2018 10 commits
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Chris Wilson authored
When reporting the frequency table stored in the punit, report the full range and not just the user restricted frequency range. In the process keep the code to set the frequency table and read it the same. v3: As we haven't separated the sb_lock from the pcu_lock yet, there's a cycle between the pcu_lock and intel_runtime_pm_get. References: f936ec34 ("drm/i915/skl: Updated the i915_ring_freq_table debugfs function") Signed-off-by:
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Chris Wilson authored
The boost frequency is only applied from the RPS worker while someone is waiting on a request and requested a boost. As such, when the user wishes to change the frequency, we have to kick the worker in order to re-evaluate whether to apply the boost frequency. v2: Check num_waiters to decide if we should kick the worker to handle boosting. Fixes: 29ecd78d ("drm/i915: Define a separate variable and control for RPS waitboost frequency") Signed-off-by:
Mika Kuoppala <mika.kuoppala@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180308142648.4016-1-chris@chris-wilson.co.uk
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Maarten Lankhorst authored
This will get rid of the following error: [ 74.730271] WARNING: CPU: 4 PID: 0 at drivers/gpu/drm/drm_vblank.c:614 drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0 [ 74.730311] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915 x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_intel crct10dif_pclmul snd_hda_codec crc32_pclmul snd_hwdep broadcom ghash_clmulni_intel snd_hda_core bcm_phy_lib snd_pcm tg3 lpc_ich mei_me mei prime_numbers [ 74.730353] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G U 4.16.0-rc2-CI-CI_DRM_3822+ #1 [ 74.730355] Hardware name: Dell Inc. XPS 8300 /0Y2MRG, BIOS A06 10/17/2011 [ 74.730359] RIP: 0010:drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0 [ 74.730361] RSP: 0018:ffff88022fb03d10 EFLAGS: 00010086 [ 74.730365] RAX: ffffffffa0291d20 RBX: ffff88021a180000 RCX: 0000000000000001 [ 74.730367] RDX: ffffffff820e7db8 RSI: 0000000000000001 RDI: ffffffff82068cea [ 74.730369] RBP: ffff88022fb03d70 R08: 0000000000000000 R09: ffffffff815d26d0 [ 74.730371] R10: 0000000000000000 R11: ffffffffa0161ca0 R12: 0000000000000001 [ 74.730373] R13: ffff880212448008 R14: ffff880212448330 R15: 0000000000000000 [ 74.730376] FS: 0000000000000000(0000) GS:ffff88022fb00000(0000) knlGS:0000000000000000 [ 74.730378] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.730380] CR2: 000055edcbec9000 CR3: 0000000002210001 CR4: 00000000000606e0 [ 74.730382] Call Trace: [ 74.730385] <IRQ> [ 74.730397] drm_get_last_vbltimestamp+0x36/0x50 [ 74.730401] drm_update_vblank_count+0x64/0x240 [ 74.730409] drm_crtc_accurate_vblank_count+0x41/0x90 [ 74.730453] display_pipe_crc_irq_handler+0x176/0x220 [i915] [ 74.730497] i9xx_pipe_crc_irq_handler+0xfe/0x150 [i915] [ 74.730537] ironlake_irq_handler+0x618/0xa30 [i915] [ 74.730548] __handle_irq_event_percpu+0x3c/0x340 [ 74.730556] handle_irq_event_percpu+0x1b/0x50 [ 74.730561] handle_irq_event+0x2f/0x50 [ 74.730566] handle_edge_irq+0xe4/0x1b0 [ 74.730572] handle_irq+0x11/0x20 [ 74.730576] do_IRQ+0x5e/0x120 [ 74.730584] common_interrupt+0x84/0x84 [ 74.730586] </IRQ> [ 74.730591] RIP: 0010:cpuidle_enter_state+0xaa/0x350 [ 74.730593] RSP: 0018:ffffc9000008beb8 EFLAGS: 00000212 ORIG_RAX: ffffffffffffffde [ 74.730597] RAX: ffff880226b80040 RBX: 000000000031fc3e RCX: 0000000000000001 [ 74.730599] RDX: 0000000000000000 RSI: ffffffff8210fb59 RDI: ffffffff820c02e7 [ 74.730601] RBP: 0000000000000004 R08: 00000000000040af R09: 0000000000000018 [ 74.730603] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 [ 74.730606] R13: ffffe8ffffd00430 R14: 0000001166120bf4 R15: ffffffff82294460 [ 74.730621] ? cpuidle_enter_state+0xa6/0x350 [ 74.730629] do_idle+0x188/0x1d0 [ 74.730636] cpu_startup_entry+0x14/0x20 [ 74.730641] start_secondary+0x129/0x160 [ 74.730646] secondary_startup_64+0xa5/0xb0 [ 74.730660] Code: e1 48 c7 c2 b8 7d 0e 82 be 01 00 00 00 48 c7 c7 ea 8c 06 82 e8 64 ec ff ff 48 8b 83 c8 07 00 00 48 83 78 28 00 0f 84 e2 fe ff ff <0f> 0b 45 31 ed e9 db fe ff ff 41 b8 d3 4d 62 10 89 c8 6a 03 41 [ 74.730754] ---[ end trace 14b1345705b68565 ]--- Changes since v1: - Don't try to apply CRC workaround when enabling pipe, it should already be enabled. Changes since v2: - Make crc functions for !DEBUGFS case inline. - Pass intel_crtc to crc functions. - Add comments to callsites. Changes since v3: - Cache selected source to pipe_crc->source. - Set pipe_crc->skipped to MIN_INT during disable to close a race condition. Changes since v4: - Handle fallout from setting pipe_crc->source in irq handler. Cc: Marta Löfstedt <marta.lofstedt@intel.com> Reported-by:
Marta Löfstedt <marta.lofstedt@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105185Signed-off-by:
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180308120202.52446-1-maarten.lankhorst@linux.intel.comReviewed-by:
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Chris Wilson authored
Currently, we only allow ourselves to prune the fences so long as all the waits completed (i.e. all the fences we checked were signaled), and that the reservation snapshot did not change across the wait. However, if we only waited for a subset of the reservation object, i.e. just waiting for the last writer to complete as opposed to all readers as well, then we would erroneously conclude we could prune the fences as indeed although all of our waits were successful, they did not represent the totality of the reservation object. v2: We only need to check the shared fences due to construction (i.e. all of the shared fences will be later than the exclusive fence, if any). Fixes: e54ca977 ("drm/i915: Remove completed fences after a wait") Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180307171303.29466-1-chris@chris-wilson.co.uk
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Joonas Lahtinen authored
Signed-off-by: -
https://github.com/intel/gvt-linuxJoonas Lahtinen authored
gvt-next-2018-03-08 - big refactor for shadow ppgtt (Changbin) - KBL context save/restore via LRI cmd (Weinan) - misc smatch fixes (Zhenyu) - Properly unmap dma for guest page (Changbin) - other misc fixes (Xiong, etc.) Signed-off-by:
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Weinan Li authored
There is one corner case missing schedule out notification of the preempted request. The preempted request is just completed when preemption happen, then it will be canceled and won't be resubmitted later, GVT-g will lost the schedule out notification. Here add schedule out notification if found the preempted request has been completed. v2: - refine description, add completed check and notification in execlists_cancel_port_requests. (Chris) v3: - use ternary confitional, remove local variable. (Tvrtko) Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Weinan Li <weinan.z.li@intel.com> Signed-off-by:
Zhenyu Wang <zhenyuw@linux.intel.com> Reviewed-by:
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Lionel Landwerlin authored
With the introduction of asymmetric slices in CNL, we cannot rely on the previous SUBSLICE_MASK getparam to tell userspace what subslices are available. Here we introduce a more detailed way of querying the Gen's GPU topology that doesn't aggregate numbers. This is essential for monitoring parts of the GPU with the OA unit, because counters need to be normalized to the number of EUs/subslices/slices. The current aggregated numbers like EU_TOTAL do not gives us sufficient information. The Mesa series making use of this API is : https://patchwork.freedesktop.org/series/38795/ As a bonus we can draw representations of the GPU : https://imgur.com/a/vuqpa v2: Rename uapi struct s/_mask/_info/ (Tvrtko) Report max_slice/subslice/eus_per_subslice rather than strides (Tvrtko) Add uapi macros to read data from *_info structs (Tvrtko) v3: Use !!(v & DRM_I915_BIT()) for uapi macros instead of custom shifts (Tvrtko) v4: factorize query item writting (Tvrtko) tweak uapi struct/define names (Tvrtko) v5: Replace ALIGN() macro (Chris) v6: Updated uapi comments (Tvrtko) Moved flags != 0 checks into vfuncs (Tvrtko) v7: Use access_ok() before copying anything, to avoid overflows (Chris) Switch BUG_ON() to GEM_WARN_ON() (Tvrtko) v8: Tweak uapi comments style to match the coding style (Lionel) v9: Fix error in comment about computation of enabled subslice (Tvrtko) v10: Fix/update comments in uAPI (Sagar) v11: Drop drm_i915_query_(slice|subslice|eu)_info in favor of a single drm_i915_query_topology_info (Joonas) v12: Add subslice_stride/eu_stride in drm_i915_query_topology_info (Joonas) v13: Fix comment in uAPI (Joonas) Signed-off-by: -
Lionel Landwerlin authored
There are a number of information that are readable from hardware registers and that we would like to make accessible to userspace. One particular example is the topology of the execution units (how are execution units grouped in subslices and slices and also which ones have been fused off for die recovery). At the moment the GET_PARAM ioctl covers some basic needs, but generally is only able to return a single value for each defined parameter. This is a bit problematic with topology descriptions which are array/maps of available units. This change introduces a new ioctl that can deal with requests to fill structures of potentially variable lengths. The user is expected fill a query with length fields set at 0 on the first call, the kernel then sets the length fields to the their expected values. A second call to the kernel with length fields at their expected values will trigger a copy of the data to the pointed memory locations. The scope of this uAPI is only to provide information to userspace, not to allow configuration of the device. v2: Simplify dispatcher code iteration (Tvrtko) Tweak uapi drm_i915_query_item structure (Tvrtko) v3: Rename pad fields into flags (Chris) Return error on flags field != 0 (Chris) Only copy length back to userspace in drm_i915_query_item (Chris) v4: Use array of functions instead of switch (Chris) v5: More comments in uapi (Tvrtko) Return query item errors in length field (All) v6: Tweak uapi comments style to match the coding style (Lionel) v7: Add i915_query.h (Joonas) v8: (Lionel) Change the behavior of the item iterator to report invalid queries into the query item rather than stopping the iteration. This enables userspace applications to query newer items on older kernels and only have failure on the items that are not supported. v9: Edit copyright headers (Joonas) v10: Typos & comments in uapi (Joonas) Signed-off-by: -
Lionel Landwerlin authored
This might be useful information for developers looking at an error state. v2: Place topology towards the end of the error state (Chris) v3: Reuse common printing code (Michal) v4: Make this a one-liner (Chris) Signed-off-by:
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