- 13 Feb, 2017 38 commits
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Chris Wilson authored
It is possible whilst allocating the page-directory tree for a ppgtt bind that the shrinker may run and reap unused parts of the tree. If the shrinker happens to remove a chunk of the tree that the allocate_va_range has already processed, we may then try to insert into the dangling tree. This test uses the fault-injection framework to force the shrinker to be invoked before we allocate new pages, i.e. new chunks of the PD tree. References: https://bugs.freedesktop.org/show_bug.cgi?id=99295Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Matthew Auld <matthew.auld@intel.com>
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Chris Wilson authored
Directly test allocating the va range and clearing it, this bypasses the use of i915_vma_bind() and inserting the pages to focus on testing of the pagetables. Signed-off-by:
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Chris Wilson authored
Test the low-level i915_address_space interfaces to sanity check the live insertion/removal of address ranges. v2: Split out the low-level operations to a new test Signed-off-by:
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Chris Wilson authored
Exercise filling different pages of the GTT v2: Walk all holes until we timeout Signed-off-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-30-chris@chris-wilson.co.uk
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Chris Wilson authored
Same test as previously for the per-process GTT instead applied to the global GTT. Signed-off-by:
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Chris Wilson authored
Allocate objects with varying number of pages (which should hopefully consist of a mixture of contiguous page chunks and so coalesced sg lists) and check that the sg walkers in insert_pages cope. v2: Check both small <-> large Signed-off-by:
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Chris Wilson authored
Simple starting point for adding selftests for i915_gem_gtt, first try creating a ppGTT and filling it. Signed-off-by:
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Chris Wilson authored
Though we have good coverage of our dmabuf interface through the mock tests, we also want to check the heavy module unload paths of the live i915 driver. Signed-off-by:
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Chris Wilson authored
Check that we can create both dmabuf and objects from dmabuf. v2: Cleanups, correct include, fix unpin on dead path and prevent explosion on dmabuf init failure Signed-off-by:
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Chris Wilson authored
Add a late selftest that walks over all forcewake registers (those below 0x40000) and uses the mmio debug register to check to see if any are unclaimed. This is possible if we fail to wake the appropriate powerwells for the register. Signed-off-by:
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Chris Wilson authored
In addition to just testing the fw table we load, during the initial mock testing we can test that all tables are valid (so the testing is not limited to just the platforms that load that particular table). Signed-off-by:
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Chris Wilson authored
Now that the kselftest infrastructure exists, put it to use and add to it the existing consistency checks on the fw register lookup tables. v2: s/tabke/table/ Signed-off-by:
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Chris Wilson authored
Write into an object using WB, WC, GTT, and GPU paths and make sure that our internal API is sufficient to ensure coherent reads and writes. v2: Avoid invalid free upon allocation error Signed-off-by:
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Chris Wilson authored
An unlikely error condition that we can simulate by stealing most of the range before trying to insert new objects. Signed-off-by:
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Chris Wilson authored
Create partial mappings to cover a large object, investigating tiling (fenced regions) and VMA reuse. Signed-off-by:
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Chris Wilson authored
Starting with a placeholder test just to reassure that we can create a test object, Signed-off-by:
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Chris Wilson authored
The phys object is a rarely used device (only very old machines require a chunk of physically contiguous pages for a few hardware interactions). As such, it is not exercised by CI and to combat that we want to add a test that exercises the phys object on all platforms. v2: Always set err on error paths and not rely on inheriting the err. Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-17-chris@chris-wilson.co.uk
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Chris Wilson authored
Primarily to emphasize the difference between just advancing the breadcrumb using a bare request and the overhead of dispatching an execbuffer. Signed-off-by:
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Chris Wilson authored
A request on one engine with a dependency on a request on another engine must wait for completion of the first request before starting. Signed-off-by:
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Chris Wilson authored
Use a recursive-batch to busy spin on each to ensure that each is being run simultaneously. Signed-off-by:
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Chris Wilson authored
Just create several batches of requests and expect it to not fall over! Signed-off-by:
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Chris Wilson authored
Do a quick selftest on in the interoperability of dma_fence_wait on a i915_gem_request. Signed-off-by:
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Chris Wilson authored
A trivial kselftest to submit a request and wait upon it. Signed-off-by:
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Chris Wilson authored
Simple starting point for adding seltests for i915_gem_request, first mock a device (with engines and contexts) that allows us to construct and execute a request, along with waiting for the request to complete. Signed-off-by:
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Chris Wilson authored
We would like to be able to exercise huge allocations even on memory constrained devices. To do this we create an object that allocates only a few pages and remaps them across its whole range - each page is reused multiple times. We can therefore pretend we are rendering into a much larger object. Signed-off-by:
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Chris Wilson authored
Create a fake engine that runs requests using a timer to simulate hw. v2: Prevent leaks of ctx->name along error paths Signed-off-by:
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Chris Wilson authored
A very simple mockery, just a random manager and timeline. Useful for inserting objects and ordering retirement; and not much else. v2: mock_fini_ggtt() to complement mock_init_ggtt(). Signed-off-by:
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Chris Wilson authored
A simulacrum of drm_i915_private to let us pretend interactions with the device. v2: Tidy init error paths Signed-off-by:
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Chris Wilson authored
Third retroactive test, make sure that the seqno waiters are woken. v2: Smattering of comments, rearrange code v3: Fix IDLE assert to avoid startup/sleep races Signed-off-by:
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Chris Wilson authored
Second retroactive test, make sure that the waiters are removed from the global wait-tree when their seqno completes. Signed-off-by:
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Chris Wilson authored
First retroactive test, make sure that the waiters are in global seqno order after random inserts and removals. Signed-off-by:
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Chris Wilson authored
Start exercising the scattergather lists, especially looking at iteration after coalescing. v2: Comment on the peculiarity of table construction (i.e. why this sg_table might be interesting). v3: Added one __func__ to identify expect_pfn_sg() v4: Loop until we have crossed the chain boundary (forcing sg_table to do multiple allocations) before squelching a potential ENOMEM from oom. Signed-off-by:
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Chris Wilson authored
Some pieces of code are independent of hardware but are very tricky to exercise through the normal userspace ABI or via debugfs hooks. Being able to create mock unit tests and execute them through CI is vital. Start by adding a central point where we can execute unit tests and a parameter to enable them. This is disabled by default as the expectation is that these tests will occasionally explode. To facilitate integration with igt, any parameter beginning with i915.igt__ is interpreted as a subtest executable independently via igt/drv_selftest. Two classes of selftests are recognised: mock unit tests and integration tests. Mock unit tests are run as soon as the module is loaded, before the device is probed. At that point there is no driver instantiated and all hw interactions must be "mocked". This is very useful for writing universal tests to exercise code not typically run on a broad range of architectures. Alternatively, you can hook into the live selftests and run when the device has been instantiated - hw interactions are real. v2: Add a macro for compiling conditional code for mock objects inside real objects. v3: Differentiate between mock unit tests and late integration test. v4: List the tests in natural order, use igt to sort after modparam. v5: s/late/live/ v6: s/unsigned long/unsigned int/ v7: Use igt_ prefixes for long helpers. v8: Deobfuscate macros overriding functions, stop using -I$(src) Signed-off-by:
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Chris Wilson authored
Following a hang and reset, we know that the engine is idle and all context state has been saved or lost. Consequently, we know that the engine is no longer referencing the last context and we can relinquish our tracking. Signed-off-by:
Mika Kuoppala <mika.kuoppala@intel.com>
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Chris Wilson authored
The signal threads may be running concurrently with the GPU reset. The completion from the GPU run asynchronous with the reset and two threads may see different snapshots of the state, and the signaler may mark a request as complete as we try to reset it. We don't tolerate 2 different views of the same state and complain if we try to mark a request as failed if it is already complete. Disable the signal threads during reset to prevent this conflict (even though the conflict implies that the state we resetting to is invalid, we have already made our decision!). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99733 References: https://bugs.freedesktop.org/show_bug.cgi?id=99671Signed-off-by:
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Chris Wilson authored
Disabling the tasklet leaves it if scheduled on the ready to run list until it is re-enabled. This will leave the ksoftird thread spinning until satisfied. To prevent this situation on starting the GPU reset, we want to kill the tasklet first and then disable. The same problem will arise when a tasklet is scheduled from another device, so a better solution is required for the general case. Reported-by:
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Chris Wilson authored
As i915_gem_reset_finish() undoes the steps from i915_gem_reset_prepare() to leave the system in a fully-working state, e.g. to be able to free the breadcrumb signal threads, make sure that we always call it even on the error path. Signed-off-by:
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Chris Wilson authored
As the request is not complete, it should not be signaled. Assert that this is true before we process the request for a reset. References: https://bugs.freedesktop.org/show_bug.cgi?id=99671Signed-off-by:
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- 10 Feb, 2017 2 commits
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Chris Wilson authored
After a brief discussion, we settled on a naming convention for the conditional GEM debugging data that should be clearer to the casual user: GEM_DEBUG Signed-off-by:
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Chris Wilson authored
When updating the bookkeeping following the reset, we need the seqno to be coherent on the CPU prior to trusting its result for deciding whether any request is completed. We need the irq_barrier before we start making these decisions, i.e. in reset_prepare. References: https://bugs.freedesktop.org/show_bug.cgi?id=99733Signed-off-by:
Michel Thierry <michel.thierry@intel.com>
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