- 13 Aug, 2019 3 commits
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Chris Wilson authored
Since execlists and the guc have diverged in their port tracking, we cannot simply reuse the execlists cancellation code as it leads to unbalanced reference counting. Use a local, simpler routine for the guc. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Reviewed-by:
Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190812203626.3948-1-chris@chris-wilson.co.uk
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Daniele Ceraolo Spurio authored
The last user has been removed, so drop the functions. Signed-off-by:
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Daniele Ceraolo Spurio authored
We rely on the tasklet to update the GT PM refcount, so we can't disable it even if we've processed all the requests for the engine because we might have detected the request completion before the interrupt arrived. Since on all platforms on which we plan to support guc submission we don't allow disabling the breadcrumb interrupts, we can further siplify the park/unpark flow by removing the interrupt pin/unpin. A BUG_ON has been added to catch changes to this flow that would require us to restore some kind of pinning. v2: split removal of engine_pin/unpin_breadcrumbs_irq to its own patch (chris) Signed-off-by:
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- 12 Aug, 2019 14 commits
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Chris Wilson authored
Remove the raw i915_active_request tracking in favour of the higher level i915_active tracking for the sole purpose of making the lockless transition easier in later patches. Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190812174804.26180-2-chris@chris-wilson.co.uk
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Chris Wilson authored
We were using the last_fence to track the last request that used this vma that might be interpreted by a fence register and forced ourselves to wait for this request before modifying any fence register that overlapped our vma. Due to requirement that we need to track any XY_BLT command, linear or tiled, this in effect meant that we have to track the vma for its active lifespan anyway, so we can forgo the explicit last_fence tracking and just use the whole vma->active. Another solution would be to pipeline the register updates, and would help resolve some long running stalls for gen3 (but only gen 2 and 3!) Signed-off-by:
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Andi Shyti authored
i915_irq.c is large. It serves as the central dispatch and handler for all of our device interrupts. Lets break it up by pulling out the GT interrupt handlers. Based on a patch by Chris Wilson. Signed-off-by:
Andi Shyti <andi.shyti@intel.com> Reviewed-by:
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Andi Shyti authored
i915_irq.c is large. It serves as the central dispatch and handler for all of our device interrupts. Pull out the GT pm interrupt handling (leaving the central dispatch) so that we can encapsulate the logic a little better. Based on a patch by Chris Wilson. Signed-off-by:
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Chris Wilson authored
Now that we can atomically acquire the engine wakeref, make use of it when check whether the RING registers are idle. Signed-off-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190812091045.29587-7-chris@chris-wilson.co.uk
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Chris Wilson authored
When testing whether we prevent suppressing preemption, it helps to avoid a time slice expiring prematurely. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111108Signed-off-by:
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Chris Wilson authored
Since we allow ourselves to use non-process context during parking, we cannot allow ourselves to sleep and in particular cannot call del_timer_sync() -- but we can use a plain del_timer(). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111375Signed-off-by:
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Michal Wajdeczko authored
Include 2019 in copyright years and start using SPDX tag. Signed-off-by:
Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
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Anshuman Gupta authored
The DDI-IO power wells (PWR_WELL_CTL_DDI) are backing the IO/PHY functionality, which doesn't need the PG3 power power well. Accordingly fixing up the list of PG3 power domains. Cc: Imre Deak <imre.deak@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Anshuman Gupta <anshuman.gupta@intel.com> Signed-off-by:
Imre Deak <imre.deak@intel.com> Reviewed-by:
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Anshuman Gupta authored
The DDI-IO power wells (PWR_WELL_CTL_DDI) are backing the IO/PHY functionality, which doesn't need the PG3 power power well. Accordingly fixing up the list of PG3 power domains. v2: Removed "DDI E/F IO"power domain as well [Imre] Cc: Imre Deak <imre.deak@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Michal Wajdeczko authored
Since commit 6ca9a2be ("drm/i915: Unwind i915_gem_init() failure") we believed that we correctly handle all errors encountered during GuC initialization, including special one that indicates request to run driver with disabled GPU submission (-EIO). Unfortunately since commit 121981fa ("drm/i915/guc: Combine enable_guc_loading|submission modparams") we stopped using that error code to avoid unwanted fallback to execlist submission mode. In result any GuC initialization failure was treated as non-recoverable error leading to driver load abort, so we could not even read related GuC error log to investigate cause of the problem. For now always return -EIO on any uC hardware related failure. Signed-off-by:
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Michal Wajdeczko authored
Our old messages were redundant or misleading (as loaded is not the same as running). Keep only one message for debug. Signed-off-by:
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Michal Wajdeczko authored
After successful uC initialization we are reporting GuC firmware version and status of GuC submission and HuC. Add HuC fw version to this report to make it complete, but also skip all HuC info if HuC is not supported. v2: squeeze to one line (Chris) Signed-off-by:
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Michal Wajdeczko authored
We don't want to rely on misleading WOPCM partitioning error. Signed-off-by:
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- 11 Aug, 2019 1 commit
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Chris Wilson authored
Before we start upon our great GT interrupt refactor, throw out the cruft! In this case, it is an unloved debugfs showing the current ips status, a fairly meaningless bunch of numbers that we are not checking. Signed-off-by:
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- 10 Aug, 2019 7 commits
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Matthew Auld authored
Simple buddy allocator. We want to allocate properly aligned power-of-two blocks to promote usage of huge-pages for the GTT, so 64K, 2M and possibly even 1G. While we do support allocating stuff at a specific offset, it is more intended for preallocating portions of the address space, say for an initial framebuffer, for other uses drm_mm is probably a much better fit. Anyway, hopefully this can all be thrown away if we eventually move to having the core MM manage device memory. Signed-off-by:
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Matthew Auld authored
We can already clear an object with the blt, so try to do the same to support copying from one object backing store to another. Really this is just object -> object, which is not that useful yet, what we really want is two backing stores, but that will require some vma rework first, otherwise we are stuck with "tmp" objects. Signed-off-by:
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Matthew Auld authored
We currently disable THP(Transparent-Huge-Pages) for our shmem objects due to a performance regression with read BW in some internal benchmarks. Given that this is our main source of 2M pages, there really isn't much point in enabling 2M GTT pages, especially as that comes at the cost of disabling the GTT cache. However from gen11 it looks like we should hopefully see the HW issue resolved. Given this opt for only enabling 2M GTT pages from gen11 onwards. Signed-off-by:
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Matthew Auld authored
For some platforms the GTT cache is by default not enabled, and currently where we explicitly enable it, we make it conditional on 2M GTT page support, since the BSpec states that we must disable it if we enable 2M/1G pages. To make this more consistent opt for blanket enabling the GTT cache for all relevant gens in a single place, while still keeping the same behaviour of checking for 2M support. BSpec: 9314 BSpec: 423 Signed-off-by:
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Matthew Auld authored
Using the gpu to write to some dword over a number of pages is rather useful, and we already have two copies of such a thing, and we don't want a third so move it to utils. There is probably some other stuff also... Signed-off-by:
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Matthew Auld authored
As pointed out by Chris, with our current approach we are actually limited to S16_MAX * PAGE_SIZE for our size when using the blt to clear pages. Keeping things simple try to fix this by reducing the copy to a sequence of S16_MAX * PAGE_SIZE blocks. Reported-by:
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Matthew Auld authored
Currently we just pass in bcs0->engine_context so it matters not, but in the future we may want to pass in something that is not a kernel_context, so try to be a bit more generic. Suggested-by:
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- 09 Aug, 2019 15 commits
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Daniele Ceraolo Spurio authored
Multiple uncore structures will share the debug infrastructure, so move it to a common place and add extra locking around it. Also, since we now have a separate object, it is cleaner to have dedicated functions working on the object to stop and restart the mmio debug. Apart from the cosmetic changes, this patch introduces 2 functional updates: - All calls to check_for_unclaimed_mmio will now return false when the debug is suspended, not just the ones that are active only when i915_modparams.mmio_debug is set. If we don't trust the result of the check while a user is doing mmio access then we shouldn't attempt the check anywhere. - i915_modparams.mmio_debug is not save/restored anymore around user access. The value is now never touched by the kernel while debug is disabled so no need for save/restore. v2: squash mmio_debug patches, restrict mmio_debug lock usage (Chris) Signed-off-by:
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Chris Wilson authored
The filesystem reconfigure API is undergoing a transition, breaking our current code. As we only set the default options, we can simply remove the call to s_op->remount_fs(). In the future, when HW permits, we can try re-enabling huge page support, albeit as suggested with new per-file controls. Reported-by:
Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Reported-by:
Sedat Dilek <sedat.dilek@gmail.com> Suggested-by:
Hugh Dickins <hughd@google.com> Signed-off-by:
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Chris Wilson authored
Move the timeline from being inside the intel_ring to intel_context itself. This saves much pointer dancing and makes the relations of the context to its timeline much clearer. Signed-off-by:
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Chris Wilson authored
Push the ring creation flags from the outer GEM context to the inner intel_context to avoid an unsightly back-reference from inside the backend. Signed-off-by:
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Chris Wilson authored
Refactor the backends to handle the deferred context allocation in a consistent manner, and allow calling it as an explicit first step in pinning a context for the first time. This should make it easier for backends to keep track of partially constructed contexts from initialisation. Signed-off-by:
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Chris Wilson authored
As we are phasing out using the GEM context for internal clients that need to manipulate logical context state directly, remove the constructor for the GVT context. We are not using it for anything other than default setup and allocation of an i915_ppgtt. Signed-off-by:
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Chris Wilson authored
Since we have already stopped the ring, cleared the ring, disabled the ring (and verifying the ring is clear), a later debug message that the ring is no longer clear serves no function. It appears it restarts anyway, and we verify that the ring started correctly afterwards. Signed-off-by:
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Chris Wilson authored
For the default I915_EXEC_BSD round robin selector, it may select any available VCS engine. Make it so. Signed-off-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190809091010.23281-3-chris@chris-wilson.co.uk
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Chris Wilson authored
We keep a global seed for the legacy BSD round-robin selector, but in our testing of multiple simultaneous client workloads, a random seed spreads the load more evenly. (As even as an initial round-robin selector can be!) Removing the global is one less variable we have to find a home for! We can simulate multi-client (both same and mixed workloads) using igt/gem_wsim to work out optimal strategies and then compare our simulation with the actual transcoder on multi-engine machines. This fixed round-robin turns out to be one of the worst methods. No user is advised to use this method; the current suggestion is to use a virtual engine for agnostic batches, randomised submission or using the busyness tracking to select the most idle engine at the time of dispatch. At the present time, intel-media is explicit, but libva still seems to use it, with the exception of batches that must execute on vcs0. Oh well. Signed-off-by:
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Chris Wilson authored
To use the legacy BSD selector, you must have a second VCS engine, or else the ABI simply maps the request for another engine onto VCS0. However, we only checked a single VCS1 location and overlooking the possibility of a sparse VCS set being mapped to the dense ABI. v2: num_vcs_engines() turns out to be reusable and futureproof it so we never have to worry about this silly bit of ABI again! Signed-off-by:
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Chris Wilson authored
After a preempt-to-busy, we may find an active request that is caught between execution states. Walk back along the timeline instead of the execution list to be safe. [ 106.417541] i915 0000:00:02.0: Resetting rcs0 for preemption time out [ 106.417659] ================================================================== [ 106.418041] BUG: KASAN: slab-out-of-bounds in __execlists_reset+0x2f2/0x440 [i915] [ 106.418123] Read of size 8 at addr ffff888703506b30 by task swapper/1/0 [ 106.418194] [ 106.418267] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G U 5.3.0-rc3+ #5 [ 106.418344] Hardware name: Intel Corporation NUC7i5BNK/NUC7i5BNB, BIOS BNKBL357.86A.0052.2017.0918.1346 09/18/2017 [ 106.418434] Call Trace: [ 106.418508] <IRQ> [ 106.418585] dump_stack+0x5b/0x90 [ 106.418941] ? __execlists_reset+0x2f2/0x440 [i915] [ 106.419022] print_address_description+0x67/0x32d [ 106.419376] ? __execlists_reset+0x2f2/0x440 [i915] [ 106.419731] ? __execlists_reset+0x2f2/0x440 [i915] [ 106.419810] __kasan_report.cold.6+0x1a/0x3c [ 106.419888] ? __trace_bprintk+0xc0/0xd0 [ 106.420239] ? __execlists_reset+0x2f2/0x440 [i915] [ 106.420318] check_memory_region+0x144/0x1c0 [ 106.420671] __execlists_reset+0x2f2/0x440 [i915] [ 106.421029] execlists_reset+0x3d/0x50 [i915] [ 106.421387] intel_engine_reset+0x203/0x3a0 [i915] [ 106.421744] ? igt_reset_nop+0x2b0/0x2b0 [i915] [ 106.421825] ? _raw_spin_trylock_bh+0xe0/0xe0 [ 106.421901] ? rcu_core+0x1b9/0x6a0 [ 106.422251] preempt_reset+0x9a/0xf0 [i915] [ 106.422333] tasklet_action_common.isra.15+0xc0/0x1e0 [ 106.422685] ? execlists_submit_request+0x200/0x200 [i915] [ 106.422764] __do_softirq+0x106/0x3cf [ 106.422840] irq_exit+0xdc/0xf0 [ 106.422914] smp_apic_timer_interrupt+0x81/0x1c0 [ 106.422988] apic_timer_interrupt+0xf/0x20 [ 106.423059] </IRQ> [ 106.423144] RIP: 0010:cpuidle_enter_state+0xc3/0x620 [ 106.423222] Code: 24 0f 1f 44 00 00 31 ff e8 da 87 9c ff 80 7c 24 10 00 74 12 9c 58 f6 c4 02 0f 85 33 05 00 00 31 ff e8 c1 77 a3 ff fb 45 85 e4 <0f> 89 bf 02 00 00 48 8d 7d 10 e8 4e 45 b9 ff c7 45 10 00 00 00 00 [ 106.423311] RSP: 0018:ffff88881c30fda8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 106.423390] RAX: 0000000000000000 RBX: ffffffff825b4c80 RCX: ffffffff810c8a00 [ 106.423465] RDX: dffffc0000000000 RSI: 0000000039f89620 RDI: ffff88881f6b00a8 [ 106.423540] RBP: ffff88881f6b5bf8 R08: 0000000000000002 R09: 000000000002ed80 [ 106.423616] R10: 0000003fdd956146 R11: ffff88881c2d1e47 R12: 0000000000000008 [ 106.423691] R13: 0000000000000008 R14: ffffffff825b4f80 R15: ffffffff825b4fc0 [ 106.423772] ? sched_idle_set_state+0x20/0x30 [ 106.423851] ? cpuidle_enter_state+0xa6/0x620 [ 106.423874] ? tick_nohz_idle_stop_tick+0x1d1/0x3f0 [ 106.423896] cpuidle_enter+0x37/0x60 [ 106.423919] do_idle+0x246/0x280 [ 106.423941] ? arch_cpu_idle_exit+0x30/0x30 [ 106.423964] ? __wake_up_common+0x46/0x240 [ 106.423986] cpu_startup_entry+0x14/0x20 [ 106.424009] start_secondary+0x1b0/0x200 [ 106.424031] ? set_cpu_sibling_map+0x990/0x990 [ 106.424054] secondary_startup_64+0xa4/0xb0 [ 106.424075] [ 106.424096] Allocated by task 626: [ 106.424119] save_stack+0x19/0x80 [ 106.424143] __kasan_kmalloc.constprop.7+0xc1/0xd0 [ 106.424165] kmem_cache_alloc+0xb2/0x1d0 [ 106.424277] i915_sched_lookup_priolist+0x1ab/0x320 [i915] [ 106.424385] execlists_submit_request+0x73/0x200 [i915] [ 106.424498] submit_notify+0x59/0x60 [i915] [ 106.424600] __i915_sw_fence_complete+0x9b/0x330 [i915] [ 106.424713] __i915_request_commit+0x4bf/0x570 [i915] [ 106.424818] intel_engine_pulse+0x213/0x310 [i915] [ 106.424925] context_close+0x22f/0x470 [i915] [ 106.425033] i915_gem_context_destroy_ioctl+0x7b/0xa0 [i915] [ 106.425058] drm_ioctl_kernel+0x131/0x170 [ 106.425081] drm_ioctl+0x2d9/0x4f1 [ 106.425104] do_vfs_ioctl+0x115/0x890 [ 106.425126] ksys_ioctl+0x35/0x70 [ 106.425147] __x64_sys_ioctl+0x38/0x40 [ 106.425169] do_syscall_64+0x66/0x220 [ 106.425191] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 106.425213] [ 106.425234] Freed by task 0: [ 106.425255] (stack is not available) [ 106.425276] [ 106.425297] The buggy address belongs to the object at ffff888703506a40 [ 106.425297] which belongs to the cache i915_priolist of size 104 [ 106.425321] The buggy address is located 136 bytes to the right of [ 106.425321] 104-byte region [ffff888703506a40, ffff888703506aa8) [ 106.425345] The buggy address belongs to the page: [ 106.425367] page:ffffea001c0d4180 refcount:1 mapcount:0 mapping:ffff88873e1cf740 index:0xffff888703506e40 compound_mapcount: 0 [ 106.425391] flags: 0x8000000000010200(slab|head) [ 106.425415] raw: 8000000000010200 ffffea0020192b88 ffff8888174b5450 ffff88873e1cf740 [ 106.425439] raw: ffff888703506e40 000000000010000e 00000001ffffffff 0000000000000000 [ 106.425464] page dumped because: kasan: bad access detected [ 106.425486] [ 106.425506] Memory state around the buggy address: [ 106.425528] ffff888703506a00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 106.425551] ffff888703506a80: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc [ 106.425573] >ffff888703506b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 106.425597] ^ [ 106.425619] ffff888703506b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 106.425642] ffff888703506c00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 106.425664] ================================================================== Fixes: 22b7a426 ("drm/i915/execlists: Preempt-to-busy") Signed-off-by:
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Chris Wilson authored
Matthew spotted that we lost the fput() for phys objects now that we are not relying on the core to cleanup the GEM object. (For the record, phys objects import the shmemfs from their original set of pages and keep it to provide swap space, but we never transform back into a shmem object.) Reported-by:
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Jani Nikula authored
It used to be handy that we only had a couple of headers, but over time i915_drv.h has become unwieldy. Extract declarations to a separate header file corresponding to the implementation module, clarifying the modularity of the driver. Ensure the new header is self-contained, and do so with minimal further includes, using forward declarations as needed. Include the new header from i915_drv.h to avoid sprinkling includes all over the place; this can be changed as a follow-up if necessary. No functional changes. Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/b8406f72ce5bfb8863a54003b756ebae8b17c9cb.1565271681.git.jani.nikula@intel.com
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Jani Nikula authored
It used to be handy that we only had a couple of headers, but over time i915_drv.h has become unwieldy. Extract declarations to a separate header file corresponding to the implementation module, clarifying the modularity of the driver. Ensure the new header is self-contained, and do so with minimal further includes, using forward declarations as needed. Include the new header from i915_drv.h to avoid sprinkling includes all over the place; this can be changed as a follow-up if necessary. No functional changes. Reviewed-by:
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Jani Nikula authored
It used to be handy that we only had a couple of headers, but over time i915_drv.h has become unwieldy. Extract declarations to a separate header file corresponding to the implementation module, clarifying the modularity of the driver. Ensure the new header is self-contained, and do so with minimal further includes, using forward declarations as needed. Include the new header only where needed, and sort the modified include directives while at it and as needed. No functional changes. Reviewed-by:
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