- 29 Jul, 2022 1 commit
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Michał Winiarski authored
In GuC submission mode, there is an option to use auto-switch out semaphores and have GuC auto-switch in a waiting context. This requires routing the semaphore interrupt to GuC. Signed-off-by:
Michał Winiarski <michal.winiarski@intel.com> Signed-off-by:
John Harrison <John.C.Harrison@Intel.com> Reviewed-by:
Matthew Brost <matthew.brost@intel.com> Reviewed-by:
Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220728024225.2363663-2-John.C.Harrison@Intel.com
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- 28 Jul, 2022 10 commits
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Zhanjun Dong authored
We are seeing error message of "No response for request". Some cases happened while waiting for response and reset/suspend action was triggered. In this case, no response is not an error, active requests will be cancelled. This patch will handle this condition and change the error message into debug message. Signed-off-by:
Zhanjun Dong <zhanjun.dong@intel.com> Reviewed-by:
Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by:
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Mauro Carvalho Chehab authored
TLB cache invalidation can happen on two different situations: 1. synchronously, at __vma_put_pages(); 2. asynchronously. On the first case, TLB cache invalidation happens inside __vma_put_pages(). So, no need to do it later on. However, on the second case, the pages will keep in memory until __i915_vma_evict() is called. So, we need to store the TLB data at struct i915_vma_resource, in order to do a TLB cache invalidation before allowing userspace to re-use the same memory. So, i915_vma_resource_unbind() has gained a new parameter in order to store the TLB data at the second case. Document it. Reviewed-by:
Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by:
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Chris Wilson authored
Invalidate TLB in batches, in order to reduce performance regressions. Currently, every caller performs a full barrier around a TLB invalidation, ignoring all other invalidations that may have already removed their PTEs from the cache. As this is a synchronous operation and can be quite slow, we cause multiple threads to contend on the TLB invalidate mutex blocking userspace. We only need to invalidate the TLB once after replacing our PTE to ensure that there is no possible continued access to the physical address before releasing our pages. By tracking a seqno for each full TLB invalidate we can quickly determine if one has been performed since rewriting the PTE, and only if necessary trigger one for ourselves. That helps to reduce the performance regression introduced by TLB invalidate logic. [mchehab: rebased to not require moving the code to a separate file] Cc: stable@vger.kernel.org Fixes: 7938d615 ("drm/i915: Flush TLBs before releasing backing store") Suggested-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Signed-off-by:
Chris Wilson <chris.p.wilson@intel.com> Cc: Fei Yang <fei.yang@intel.com> Signed-off-by:
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Chris Wilson authored
Skip all further TLB invalidations once the device is wedged and had been reset, as, on such cases, it can no longer process instructions on the GPU and the user no longer has access to the TLB's in each engine. So, an attempt to do a TLB cache invalidation will produce a timeout. That helps to reduce the performance regression introduced by TLB invalidate logic. Cc: stable@vger.kernel.org Fixes: 7938d615 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by:
Thomas Hellström <thomas.hellstrom@linux.intel.com> Signed-off-by:
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Chris Wilson authored
Ensure that the TLB of the OA unit is also invalidated on gen12 HW, as just invalidating the TLB of an engine is not enough. Cc: stable@vger.kernel.org Fixes: 7938d615 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by:
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Mauro Carvalho Chehab authored
Add a kernel-doc markup to document this new macro. Reviewed-by:
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Chris Wilson authored
Check if the device is powered down prior to any engine activity, as, on such cases, all the TLBs were already invalidated, so an explicit TLB invalidation is not needed, thus reducing the performance regression impact due to it. This becomes more significant with GuC, as it can only do so when the connection to the GuC is awake. Cc: stable@vger.kernel.org Fixes: 7938d615 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by:
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Matthew Auld authored
The kernel only manages the ccs state with lmem-only objects, however the kernel should still take care not to leak the CCS state from the previous user. Fixes: 48760ffe ("drm/i915/gt: Clear compress metadata for Flat-ccs objects") Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Ramalingam C <ramalingam.c@intel.com> Reviewed-by:
Ramalingam C <ramalingam.c@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220727164346.282407-1-matthew.auld@intel.com
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Nirmoy Das authored
PCI bar resize only works with 64 bit BAR so disable this on 32-bit machine and resolve below compilation error: drivers/gpu/drm/i915/gt/intel_region_lmem.c:94:23: error: result of comparison of constant 4294967296 with expression of type 'resource_size_t' (aka 'unsigned int') is always false [-Werror,-Wtautological-constant-out-of-range-compare] root_res->start > 0x100000000ull) Fixes: a91d1a17 ("drm/i915: Add support for LMEM PCIe resizable bar") Reported-by:Linux Kernel Functional Testing <lkft@linaro.org> Tested-by:
Nirmoy Das <nirmoy.das@intel.com> Reviewed-by:
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Chris Wilson authored
We report object allocation failures to userspace with ENOMEM, yet we still show the memory warning after failing to shrink device allocated pages. While this warning is similar to other system page allocation failures, it is superfluous to the ENOMEM provided directly to userspace. v2: Add NOWARN in few more places from where we might return ENOMEM to userspace. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4936Signed-off-by:Chris Wilson <chris@chris-wilson.co.uk> Co-developed-by:
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- 21 Jul, 2022 2 commits
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Jason Wang authored
Fix the double `wait' typo in comment. Signed-off-by:
Jason Wang <wangborong@cdjrlc.com> Reviewed-by:
Andrzej Hajda <andrzej.hajda@intel.com> Signed-off-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220716040520.31676-1-wangborong@cdjrlc.com
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Jason Wang authored
The semicolon after the `}' is unneeded. Signed-off-by:
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- 20 Jul, 2022 1 commit
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John Harrison authored
A bunch of code was copy/pasted using pr_err as the default way to report errors. However, drm_err is significantly more useful in identifying where the error came from. So update the code to use that instead. Signed-off-by:
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- 19 Jul, 2022 3 commits
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Daniele Ceraolo Spurio authored
This patch re-introduces support for GuC v69 in parallel to v70. As this is a quick fix, v69 has been re-introduced as the single "fallback" guc version in case v70 is not available on disk and only for platforms that are out of force_probe and require the GuC by default. All v69 specific code has been labeled as such for easy identification, and the same was done for all v70 functions for which there is a separate v69 version, to avoid accidentally calling the wrong version via the unlabeled name. When the fallback mode kicks in, a drm_notice message is printed in dmesg to inform the user of the required update. The existing logging of the fetch function has also been updated so that we no longer complain immediately if we can't find a fw and we only throw an error if the fetch of both the base and fallback blobs fails. The plan is to follow this up with a more complex rework to allow for multiple different GuC versions to be supported at the same time. v2: reduce the fallback to platform that require it, switch to firmware_request_nowarn(), improve logs. Fixes: 2584b354 ("drm/i915/guc: Update to GuC version 70.1.1") Link: https://lists.freedesktop.org/archives/intel-gfx/2022-July/301640.htmlSigned-off-by:
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Ashutosh Dixit authored
Add the following sysfs files to gt/gtN/.defaults/: * rps_min_freq_mhz * rps_max_freq_mhz v2: Correct gt/gtN/.defaults/* file names in commit message v3: Remove rps_boost_freq_mhz since it is not consumed by userspace Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by:
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Ashutosh Dixit authored
Create a gt/gtN/.defaults/ directory (similar to engine/<engine-name>/.defaults/) to expose default parameter values for each gt in sysfs. This allows userspace to restore default parameter values after they have changed. The empty 'struct gt_defaults' will be populated by subsequent patches. v2: Changed 'struct intel_rps_defaults rps_defaults' to 'struct gt_defaults defaults' (Andi) Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by:
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- 15 Jul, 2022 1 commit
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Chris Wilson authored
When resuming after hibernate sometimes we see hangs in unrelated kernel subsystems. These hangs often result in the following i915 trace: i915 0000:00:02.0: [drm] *ERROR* \ intel_gt_reset_global timed out, cancelling all in-flight rendering implying our reset task has been starved by the hanging kernel subsystem, causing us to inappropiately declare the system as wedged beyond recovery. The trace would be caused by our synchronize_srcu_expedited() taking more than the allowed 5s due to the unrelated kernel hang. But we neither need to perform that synchronisation inside the reset watchdog, nor do we need such a short timeout before declaring the device as unrecoverable. v2: Restore watchdog timeout to the previous 5 seconds (Ashutosh) Bug: https://gitlab.freedesktop.org/drm/intel/-/issues/3575Signed-off-by:
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- 13 Jul, 2022 4 commits
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Priyanka Dandamudi authored
For testing purposes, support forcing the lmem_bar_size through a new modparam. In CI we only have a limited number of configurations for DG2, but we still need to be reasonably sure we get a usable device (also verifying we report the correct values for things like probed_cpu_visible_size etc) with all the potential lmem_bar sizes that we might expect see in the wild. v2: Update commit message and a minor modification.(Matt) v3: Optimised lmem bar size code and modified code to resize bar maximum upto lmem_size instead of maximum supported size.(Nirmoy) v4: Optimised lmem bar size code.(Nirmoy) Signed-off-by:
Priyanka Dandamudi <priyanka.dandamudi@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Nirmoy Das <nirmoy.das@intel.com> Reviewed-by:
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Akeem G Abodunrin authored
Add support for the local memory PICe resizable bar, so that local memory can be resized to the maximum size supported by the device, and mapped correctly to the PCIe memory bar. It is usual that GPU devices expose only 256MB BARs primarily to be compatible with 32-bit systems. So, those devices cannot claim larger memory BAR windows size due to the system BIOS limitation. With this change, it would be possible to reprogram the windows of the bridge directly above the requesting device on the same BAR type. v2:Moved code to gt/intel_region_lmem.c and used only single underscore for function names.(Jani) v3: Optimised code. Signed-off-by:
Akeem G Abodunrin <akeem.g.abodunrin@intel.com> Signed-off-by:
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Matt Roper authored
Accidental use of a "SLICE" macro where a "SUBSLICE" macro was intended causes the group ID for steering to be calculated incorrectly on pre-Xe_HP platforms. Fixes: 9a92732f ("drm/i915/gt: Add general DSS steering iterator to intel_gt_mcr") Signed-off-by:
Matt Roper <matthew.d.roper@intel.com> Reviewed-by:
Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220712220513.3451794-1-matthew.d.roper@intel.com
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Matthew Auld authored
Since segment_pages is no longer a compile time constant, it looks the DIV_ROUND_UP(node->size, segment_pages) breaks the 32b build. Simplest is just to use the ULL variant, but really we should need not need more than u32 for the page alignment (also we are limited by that due to the sg->length type), so also make it all u32. Reported-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Fixes: bc99f120 ("drm/i915/ttm: fix sg_table construction") Signed-off-by:
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- 12 Jul, 2022 7 commits
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Andrzej Hajda authored
On some machines hole_end can be small enough to cause subtraction overflow. On the other side (addr + 2 * min_alignment) can overflow in case of mock tests. This patch should handle both cases. Fixes: e1c5f754 ("drm/i915: Avoid overflow in computing pot_hole loop termination") Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/3674Signed-off-by:
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Chris Wilson authored
One impact of commit 047a1b87 ("dma-buf & drm/amdgpu: remove dma_resv workaround") is that it stores many, many more fences. Whereas adding an exclusive fence used to remove the shared fence list, that list is now preserved and the write fences included into the list. Not just a single write fence, but now a write/read fence per context. That causes us to have to track more fences than before (albeit half of those are redundant), and we trigger more interrupts for multi-engine workloads. As part of reducing the impact from handling more signaling, we observe we only need to kick the signal worker after adding a fence iff we have good cause to believe that there is work to be done in processing the fence i.e. we either need to enable the interrupt or the request is already complete but we don't know if we saw the interrupt and so need to check signaling. References: 047a1b87 ("dma-buf & drm/amdgpu: remove dma_resv workaround") Signed-off-by:
Karolina Drobnik <karolina.drobnik@intel.com> Reviewed-by:
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Chris Wilson authored
In monitoring a transcode pipeline that is latency sensitive (it waits between submitting frames, and each frame requires work on rcs/vcs/vecs engines), it is found that it took longer than a single jiffy for it to sustain its workload. Allowing an extra jiffy headroom for the userspace prevents us from prematurely parking and having to exit powersaving immediately. Link: https://gitlab.freedesktop.org/drm/intel/-/issues/6284Signed-off-by:
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Chris Wilson authored
We employ a "waitboost" heuristic to detect when userspace is stalled waiting for results from earlier execution. Under latency sensitive work mixed between the gpu/cpu, the GPU is typically under-utilised and so RPS sees that low utilisation as a reason to downclock the frequency, causing longer stalls and lower throughput. The user left waiting for the results is not impressed. On applying commit 047a1b87 ("dma-buf & drm/amdgpu: remove dma_resv workaround") it was observed that deinterlacing h264 on Haswell performance dropped by 2-5x. The reason being that the natural workload was not intense enough to trigger RPS (using HW evaluation intervals) to upclock, and so it was depending on waitboosting for the throughput. Commit 047a1b87 ("dma-buf & drm/amdgpu: remove dma_resv workaround") changes the composition of dma-resv from keeping a single write fence + multiple read fences, to a single array of multiple write and read fences (a maximum of one pair of write/read fences per context). The iteration order was also changed implicitly from all-read fences then the single write fence, to a mix of write fences followed by read fences. It is that ordering change that belied the fragility of waitboosting. Currently, a waitboost is inspected at the point of waiting on an outstanding fence. If the GPU is backlogged such that we haven't yet stated the request we need to wait on, we force the GPU to upclock until the completion of that request. By changing the order in which we waited upon requests, we ended up waiting on those requests in sequence and as such we saw that each request was already started and so not a suitable candidate for waitboosting. Instead of asking whether to boost each fence in turn, we can look at whether boosting is required for the dma-resv ensemble prior to waiting on any fence, making the heuristic more robust to the order in which fences are stored in the dma-resv. Reported-by:
Thomas Voegtle <tv@lio96.de> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/6284 Fixes: 047a1b87 ("dma-buf & drm/amdgpu: remove dma_resv workaround") Signed-off-by:
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Chris Wilson authored
Avoid trying to invalidate the TLB in the middle of performing an engine reset, as this may result in the reset timing out. Currently, the TLB invalidate is only serialised by its own mutex, forgoing the uncore lock, but we can take the uncore->lock as well to serialise the mmio access, thereby serialising with the GDRST. Tested on a NUC5i7RYB, BIOS RYBDWi35.86A.0380.2019.0517.1530 with i915 selftest/hangcheck. Cc: stable@vger.kernel.org # v4.4 and upper Fixes: 7938d615 ("drm/i915: Flush TLBs before releasing backing store") Reported-by:
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Chris Wilson authored
Don't allow two engines to be reset in parallel, as they would both try to select a reset bit (and send requests to common registers) and wait on that register, at the same time. Serialize control of the reset requests/acks using the uncore->lock, which will also ensure that no other GT state changes at the same time as the actual reset. Cc: stable@vger.kernel.org # v4.4 and upper Reported-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Signed-off-by:
Andi Shyti <andi.shyti@intel.com> Reviewed-by:
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Matt Roper authored
This workaround may need to be extended to other platforms soon, but for now it's marked as DG2-specific. Signed-off-by:
Arun R Murthy <arun.r.murthy@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220708215804.2889246-1-matthew.d.roper@intel.com
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- 11 Jul, 2022 2 commits
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Matthew Auld authored
If we encounter some monster sized local-memory page that exceeds the maximum sg length (UINT32_MAX), ensure that don't end up with some misaligned address in the entry that follows, leading to fireworks later. Also ensure we have some coverage of this in the selftests. v2(Chris): - Use round_down consistently to avoid udiv errors v3(Nirmoy): - Also update the max_segment in the selftest Fixes: f701b16d ("drm/i915/ttm: add i915_sg_from_buddy_resource") Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/6379Signed-off-by:
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Dan Carpenter authored
The shmem_pin_map() function doesn't return error pointers, it returns NULL. Fixes: be1cb55a ("drm/i915/gt: Keep a no-frills swappable copy of the default context state") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
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- 08 Jul, 2022 5 commits
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Radhakrishna Sripada authored
Add Meteorlake PCI IDs. Split into M, and P subplatforms. v2: Update PCI id's v3: Move id 7d60 under MTL_M(MattR) Bspec: 55420 Signed-off-by:
Radhakrishna Sripada <radhakrishna.sripada@intel.com> Signed-off-by:
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Radhakrishna Sripada authored
MTL has Xe_LPD+ display IP (version = 14), MTL graphics IP (version = 12.70), and Xe_LPM+ media IP (version = 13). Bspec: 55413 Bspec: 55416 Bspec: 55417 Bspec: 55418 Bspec: 55726 Bspec: 45544 Bspec: 65380 v2: rearrange the fields in pci_info(MattR) Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
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Matt Roper authored
Although all DSS belong to a single pool on Xe_HP platforms (i.e., they're not organized into slices from a topology point of view), we do still need to pass 'group' and 'instance' targets when steering register accesses to a specific instance of a per-DSS multicast register. The rules for how to determine group and instance IDs (which previously used legacy terms "slice" and "subslice") varies by platform. Some platforms determine steering by gslice membership, some platforms by cslice membership, and future platforms may have other rules. Since looping over each DSS and performing steered unicast register accesses is a relatively common pattern, let's add a dedicated iteration macro to handle this (and replace the platform-specific "instdone" loop we were using previously. This will avoid the calling code needing to figure out the details about how to obtain steering IDs for a specific DSS. Most of the places where we use this new loop are in the GPU errorstate code at the moment, but we do have some additional features coming in the future that will also need to loop over each DSS and steer some register accesses accordingly. Signed-off-by:
Matt Atwood <matthew.s.atwood@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220701232006.1016135-1-matthew.d.roper@intel.com
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Umesh Nerlige Ramappa authored
The global sseu config is applicable only to gen11 platforms where concurrent media, render and OA use cases may cause some subslices to be turned off and hence lose NOA configuration. Ideally we want to return ENODEV for non-gen11 platforms, however, this has shipped with gfx12, so disable only for gfx12.50+. v2: gfx12 is already shipped with this, disable for gfx12.50+ (Lionel) v3: (Matt) - Update commit message and replace "12.5" with "12.50" - Replace DRM_DEBUG() with driver specific drm_dbg() Signed-off-by:
Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Acked-by:
Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by:
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Umesh Nerlige Ramappa authored
DRM_DEBUG is not the right debug call to use in i915 OA, replace it with driver specific drm_dbg() call (Matt). Signed-off-by:
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- 07 Jul, 2022 1 commit
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Chris Wilson authored
Since we are not holding a wakeref, shrinking a bound object is not guaranteed. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/6370Signed-off-by:
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- 06 Jul, 2022 1 commit
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Alan Previn authored
Both error-capture and relay-logging mechanism use the GuC log infrastructure. That means the KMD must send a log flush complete notification back to GuC after reading the data out. This call is currently being sent synchronously. However, synchronous H2Gs cause problems when the system is backed up. There is no need for this to be synchronous. The KMD wasn't even looking at the return status from it. So make it asynchronous and then there is no issue about time outs. Signed-off-by:
Alan Previn <alan.previn.teres.alexis@intel.com> Reviewed-by:
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- 04 Jul, 2022 1 commit
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Thomas Hellström authored
In vma destruction, the following race may occur: Thread 1: Thread 2: i915_vma_destroy(); ... list_del_init(vma->vm_link); ... mutex_unlock(vma->vm->mutex); __i915_vm_release(); release_references(); And in release_reference() we dereference vma->vm to get to the vm gt pointer, leading to a use-after free. However, __i915_vm_release() grabs the vm->mutex so the vm won't be destroyed before vma->vm->mutex is released, so extract the gt pointer under the vm->mutex to avoid the vma->vm dereference in release_references(). v2: Fix a typo in the commit message (Andi Shyti) Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5944 Fixes: e1a7ab4f ("drm/i915: Remove the vm open count") Cc: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Signed-off-by:
Nirmoy Das <nirmoy.das@intel.con> Reviewed-by:
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- 01 Jul, 2022 1 commit
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Niranjana Vishwanathapura authored
VM_BIND and related uapi definitions v2: Reduce the scope to simple Mesa use case. v3: Expand VM_UNBIND documentation and add I915_GEM_VM_BIND/UNBIND_FENCE_VALID and I915_GEM_VM_BIND_TLB_FLUSH flags. v4: Remove I915_GEM_VM_BIND_TLB_FLUSH flag and add additional documentation for vm_bind/unbind. v5: Remove TLB flush requirement on VM_UNBIND. Add version support to stage implementation. v6: Define and use drm_i915_gem_timeline_fence structure for all timeline fences. v7: Rename I915_PARAM_HAS_VM_BIND to I915_PARAM_VM_BIND_VERSION. Update documentation on async vm_bind/unbind and versioning. Remove redundant vm_bind/unbind FENCE_VALID flag, execbuf3 batch_count field and I915_EXEC3_SECURE flag. v8: Remove I915_GEM_VM_BIND_READONLY and minor documentation updates. Signed-off-by:Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Reviewed-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by:
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