- 17 May, 2018 1 commit
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Ville Syrjälä authored
Clean up the ADPA pipe select bits. To make the whole situation a bit less ugly we'll start to share the same code between .get_hw_state() and the port state asserts. v2: Order the defines shift,mask,value (Jani) Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180514172423.9302-1-ville.syrjala@linux.intel.com
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- 16 May, 2018 10 commits
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Chris Wilson authored
We cannot call kthread_park() from softirq context, so let's avoid it entirely during the reset. We wanted to suspend the signaler so that it would not mark a request as complete at the same time as we marked it as being in error. Instead of parking the signaling, stop the engine from advancing so that the GPU doesn't emit the breadcrumb for our chosen "guilty" request. v2: Refactor setting STOP_RING so that we don't have the same code thrice Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Michałt Winiarski <michal.winiarski@intel.com> CC: Michel Thierry <michel.thierry@intel.com> Cc: Jeff McGee <jeff.mcgee@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180516183355.10553-8-chris@chris-wilson.co.uk
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Chris Wilson authored
Catch up with the inflight CSB events, after disabling the tasklet before deciding which request was truly guilty of hanging the GPU. Signed-off-by:
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Chris Wilson authored
Pull the CSB event processing into its own routine so that we can reuse it during reset to flush any missed interrupts/events. Signed-off-by:
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Chris Wilson authored
In the next patch, we will make the execlists reset prepare callback take into account preemption by flushing the context-switch handler. This is not applicable to the GuC submission backend, so split the two into their own backend callbacks. Signed-off-by:
Jeff McGee <jeff.mcgee@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180516183355.10553-5-chris@chris-wilson.co.uk
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Chris Wilson authored
In preparation to more carefully handling incomplete preemption during reset by execlists, we move the existing code wholesale to the backends under a couple of new reset vfuncs. Signed-off-by:
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Chris Wilson authored
As a complement to inject_preempt_context(), follow up with the function to handle its completion. This will be useful should we wish to extend the duties of the preempt-context for execlists. v2: And do the same for the guc. Signed-off-by:
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Chris Wilson authored
When setting up reset, we may need to recursively prepare an engine. In which case we should only synchronously flush the tasklets on the outer most call, the inner calls will then be inside an atomic section where the tasklet will never be run (and so the sync will never complete). Signed-off-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180516183355.10553-2-chris@chris-wilson.co.uk
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Chris Wilson authored
The idea was to try and let the existing tasklet run to completion before we began the reset, but it involves a racy check against anything else that tries to run the tasklet. Rather than acknowledge and ignore the race, let it be and don't try and be too clever. The tasklet will resume execution after reset (after spinning a bit during reset), but before we allow it to resume we will have cleared all the pending state. Signed-off-by:
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Colin Ian King authored
Trivial fix to spelling mistakes in WARN warning message text and in comments: "seqeuncer", "seqeuencer" -> "sequencer" Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Chris Wilson authored
When switching to the kernel context, we force the switch to occur after all currently active requests (so that we know the GPU won't switch immediately away and the kernel context remains current as we work). To do so we have to inspect all the timelines and add a fence from the active work to queue our switch afterwards. We can use the tracked set of active rings to shrink our search for active timelines. v2: Use a local to shrink the list_for_each_entry() Signed-off-by:
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- 14 May, 2018 4 commits
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Jani Nikula authored
Signed-off-by: -
Chris Wilson authored
When we process the outstanding requests upon banning a context, we need to acquire both the engine and the client's timeline, nesting the locks. This requires explicit markup as the two timelines are now of the same class, since commit a89d1f92 ("drm/i915: Split i915_gem_timeline into individual timelines"). Testcase: igt/gem_eio/banned Fixes: a89d1f92 ("drm/i915: Split i915_gem_timeline into individual timelines") Signed-off-by:
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Chris Wilson authored
The original switch to use CSB from the HWSP was plagued by the effect of read ordering on VT-d; we would read the WRITE pointer from the HWSP before it had completed writing the CSB contents. The mystery comes down to the lack of rmb() for correct ordering with respect to the writes from HW, and with that resolved we can remove the VT-d special casing. Signed-off-by:
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https://github.com/intel/gvt-linuxJani Nikula authored
- Improve the emulation of virtual non-priv register. (Yan) - Reverse the hack of host of preeption of GVT-g. (Weinan) - Improve untracked warning message.(Changbin) Signed-off-by:
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- 13 May, 2018 8 commits
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Weinan Li authored
This reverts commit 11474e90. There are issues which will block the host preemption before, instead of disabling it use one workaround "setting max priority for gvt context" to avoid the gvt context be preempted by the host. Now the issues have been cleared, so revert this patch to enable host preemption. v2: - refine description(Zhenyu) Signed-off-by:
Weinan Li <weinan.z.li@intel.com> Signed-off-by:
Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by:
Zhi Wang <zhi.a.wang@intel.com>
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Zhi Wang authored
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Zhao Yan authored
the cmd_reg_handler() is called by cmds LRM, PIPE_CTRL, SRM... for LRM, SRM, we cannot get write data in a simple way. On other side, the force_to_nonpriv reigsters will only be written in LRI in current drivers. so we don't want to bother the handler to handle those memory access cmds, just leave a print message here. Signed-off-by:
Zhao Yan <yan.y.zhao@intel.com> Signed-off-by:
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Zhao Yan authored
Return error will cause vm hang and enter failsafe mode. However, we don't want that happen on detecting an wrong force_to_nonpriv register write. Therefore, we just omit the wrong write or patch it to default value. v2: only return 0 on detecting lri write of registers outside whitelist, but still return error on other error conditions. (zhenyu wang) Signed-off-by:
Zhang Yulei <yulei.zhang@intel.com> Signed-off-by:
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Zhao Yan authored
Each ring has a NOPID register and currently they are regarded as default value of force_to_nonpriv registers in guest drivers Signed-off-by:
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Changbin Du authored
The disable_warn_untrack never prevent gvt from printing untracked mmio errors. We were disturbed by this error storm and the fix is just adding them to the list with no essential new change. This message is only useful for enabling new platform during developing process. So lower the message level to debug and then remove disable_warn_untrack. Signed-off-by:
Changbin Du <changbin.du@intel.com> Signed-off-by:
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Michel Thierry authored
Factor in clear values wherever required while updating destination min/max. References: HSDES#1604444184 Signed-off-by:
Michel Thierry <michel.thierry@intel.com> Cc: mesa-dev@lists.freedesktop.org Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Oscar Mateo <oscar.mateo@intel.com> Reviewed-by:
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Matthew Auld authored
We write all 4K page entries, even when using 64K pages. In order to verify that the HW isn't cheating by using the 4K PTE instead of the 64K PTE, we want to remove all the surplus entries. If the HW skipped the 64K PTE, it will read/write into the scratch page instead - which we detect as missing results during selftests. v2: much improved commentary (Chris) Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Changbin Du <changbin.du@intel.com> Reviewed-by:
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- 11 May, 2018 17 commits
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Chris Wilson authored
Before we unpin the buffer used for OA reports and return it to the system, we need to be sure that the HW has finished writing into it. For lack of a better idea, poll OACONTROL to check it is switched off. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106379Signed-off-by:
Lionel Landwerlin <lionel.g.landwerlin@intel.com> Tested-by:
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Chris Wilson authored
In the previous patch (to include a rmb() after readig the CSB WRITE pointer from the HWSP) we believe we have fixed the underlying bug, and so can re-enable using the HWSP on Cannolake. This reverts commit 61bf9719 ("drm/i915/cnl: Use mmio access to context status buffer"). References: https://bugs.freedesktop.org/show_bug.cgi?id=105888 References: https://bugs.freedesktop.org/show_bug.cgi?id=106185 References: 61bf9719 ("drm/i915/cnl: Use mmio access to context status buffer") Signed-off-by:
Timo Aaltonen <tjaalton@ubuntu.com> Acked-by:
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Chris Wilson authored
We assume that the CSB is written using the normal ringbuffer coherency protocols, as outlined in kernel/events/ring_buffer.c: * (HW) (DRIVER) * * if (LOAD ->data_tail) { LOAD ->data_head * (A) smp_rmb() (C) * STORE $data LOAD $data * smp_wmb() (B) smp_mb() (D) * STORE ->data_head STORE ->data_tail * } So we assume that the HW fulfils its ordering requirements (B), and so we should use a complimentary rmb (C) to ensure that our read of its WRITE pointer is completed before we start accessing the data. The final mb (D) is implied by the uncached mmio we perform to inform the HW of our READ pointer. References: https://bugs.freedesktop.org/show_bug.cgi?id=105064 References: https://bugs.freedesktop.org/show_bug.cgi?id=105888 References: https://bugs.freedesktop.org/show_bug.cgi?id=106185 Fixes: 767a983a ("drm/i915/execlists: Read the context-status HEAD from the HWSP") References: 61bf9719 ("drm/i915/cnl: Use mmio access to context status buffer") Suggested-by: -
Oscar Mateo authored
Avoids a hang during soft reset. v2: Rebased on top of the WA refactoring v3: Added References (Mika) v4: - Rebased - C, not lisp (Chris) - Which steppings affected by this are not clear. For the moment, apply unconditionally as per the BSpec (Mika) - Add reference to another HSD also related References: HSDES#1405476379 References: HSDES#2006612137 Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Signed-off-by:Oscar Mateo <oscar.mateo@intel.com> Reviewed-by:
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Oscar Mateo authored
Disable CGPSF unit clock gating to prevent an issue. v2: Rebased on top of the WA refactoring v3: Added References (Mika) v4: - Rebased - C, not lisp (Chris) - Remove unintentional whitespaces (Mika) - Fixed in C0 (Mika) References: HSDES#1406838659 Signed-off-by:
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Oscar Mateo authored
Disable I2M Write for performance reasons. v2: Rebased on top of the WA refactoring v3: Added References (Mika) v4: - Rebased - C, not lisp (Chris) - GEN7 chicken bit in the wrong side of the fence (Mika) - Use two spaces to align bit macros References: HSDES#1604302699 Signed-off-by:
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Oscar Mateo authored
Disable GWL clock gating to prevent an issue that might cause hangs. v2: Rebased on top of the WA refactoring v3: Wa_2201832410 officially merged with Wa_1406680159 v4: Added References (Mika) v5: - Rebased - C, not lisp (Chris) - Add reference where WA is better explained (Rodrigo) - Add reference to WA that got merged with this References: HSDES#1406681710 References: HSDES#1406680159 References: HSDES#2201832410 Signed-off-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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Oscar Mateo authored
Disable MSC clock gating to prevent data corruption. BSpec: 19257 v2: Rebased on top of the WA refactoring v3: Added References (Mika) v4: - Rebased - C, not lisp (Chris) - A0 only (Mika) References: HSDES#1405779004 Signed-off-by:
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Oscar Mateo authored
Revert to the legacy implementation to avoid a system hang. v2: Correct the address for GAMW_ECO_DEV_RW_IA_REG v3: Renamed to Wa_220166154 v4: Rebased on top of the WA refactoring v5: Added References (Mika) v6: - Rebased - C, not lisp (Chris) References: HSDES#220166154 Signed-off-by:
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Oscar Mateo authored
This workarounds an issue with insufficient storage for the CL2 and SF units. v2: Renamed to Wa_1405766107 v3: Wrapped the commit message v4: Rebased on top of the WA refactoring v5: Added References (Mika) v6: - Rebased - s/MACALLOC/MAXALLOC (Mika) - C, not lisp (Chris) References: HSDES#1405766107 Signed-off-by:
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Oscar Mateo authored
Avoids an undefined LLC behavior. BSpec: 9613 v2: Renamed to Wa_1405733216 v3: Spaces around '<<' and fix surrounding code v4: Rebased on top of the WA refactoring v5: Added References (Mika) v6: - Rebased - C, not lisp (Chris) References: HSDES#1405733216 Signed-off-by:
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Oscar Mateo authored
Adjust default GAM TLB partitioning for performance reasons. v2: Only touch the bits that we really need v3: Rebased on top of the WA refactoring v4: - Added References (Mika) - Rebased v5: - Rebased - C, not lisp (Chris) - Correct reference number (Mika) References: HSDES#220160670 Signed-off-by:
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Oscar Mateo authored
Revert to an L3 non-hash model, for performance reasons. v2: - Place the WA name above the actual change - Improve the register naming v3: - Rebased - Renamed to Wa_1604223664 v4: Rebased on top of the WA refactoring v5: - Added References (Mika) - Fixed wrong mask and value (Mika) - Do not apply together with another WA for the same register (not worth the hassle) v6: - Rebased - C, not lisp (Chris) References: HSDES#1604223664 Signed-off-by: -
Oscar Mateo authored
The default GAPZ arbitrer priority value at power-on has been found to be incorrect. v2: Now renamed to Wa_1405543622 v3: Rebased on top of the WA refactoring v4: Added HSDES reference number (Mika) v5: - Rebased - C, not lisp (Chris) References: HSDES#1405543622 Signed-off-by:
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Oscar Mateo authored
Sampler Dynamic Frequency Rebalancing (DFR) aims to reduce Sampler power by dynamically changing its clock frequency in low-throughput conditions. This patches enables it by default on Gen11. v2: Wrong operation to clear the bit (Praveen) v3: Rebased on top of the WA refactoring v4: Move to icl_init_clock_gating, since it's not a WA (Rodrigo) v5: C, not lisp (Chris) Signed-off-by:
Sagar Arun Kamble <sagar.a.kamble@intel.com> Reviewed-by:
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Oscar Mateo authored
Inherit workarounds from previous platforms that are still valid for Icelake. v2: GEN7_ROW_CHICKEN2 is masked v3: - Since it has been fixed already in upstream, removed the TODO comment about WA_SET_BIT for WaInPlaceDecompressionHang. - Squashed with this patch: drm/i915/icl: add icelake_init_clock_gating() from Paulo Zanoni <paulo.r.zanoni@intel.com> - Squashed with this patch: drm/i915/icl: WaForceEnableNonCoherent from Oscar Mateo <oscar.mateo@intel.com> - WaPushConstantDereferenceHoldDisable is now Wa_1604370585 and applies to B0 as well. - WaPipeControlBefore3DStateSamplePattern WABB was being applied to ICL incorrectly. v4: - Wrap the commit message - s/dev_priv/p to please checkpatch v5: Rebased on top of the WA refactoring v6: Rebased on top of further whitelist registers refactoring (Michel) v7: Added WaRsForcewakeAddDelayForAck v8: s/ICL_HDC_CHICKEN0/ICL_HDC_MODE (Mika) v9: - C, not lisp (Chris) - WaIncreaseDefaultTLBEntries is the same for GEN > 9_LP (Tvrtko) Signed-off-by: -
Mika Kuoppala authored
Not all architectures guarantee that uncached read will flush the write combining buffer. So marking it explicitly is recommended [1]. However we know the architecture we are operating on and can avoid wmb as the UC store will flush the wcb [2]. Omit the wmb() before invalidate as redudant. v2: squash combining and removal (Chris) v3: remove obsolete comments about posting reads (Chris) References: http://yarchive.net/comp/linux/write_combining.html [1] References: http://download.intel.com/design/PentiumII/applnots/24442201.pdf [2] Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Matthew Auld <matthew.auld@intel.com> Signed-off-by:
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