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Make sure that reserved blocks fit in the
address space managed by the simple allocator.
Signed-off-by: Andrzej Turko <andrzej.turko@linux.intel.com>
Cc: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Reviewed-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
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When allocator is running in multiprocess mode, all queries
are processed in a designated thread in the parent process.
However, a child process may request opening the allocator
for a gpu using a file descriptor absent in the parent process.
Hence, querying available gtt size must be done in the child
instead of the parent process.
As a consequence of this change creating allocators managing
only a given interval of available gtt is now enabled for all
allocator implementations. Additionally, this commit sets a
universal lower bound on alignment to 4096.
Signed-off-by: Andrzej Turko <andrzej.turko@linux.intel.com>
Cc: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Reviewed-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
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To use spinners with no-reloc we need to alloc offsets for them
from already opened allocator. As we don't know what strategy
is chosen for open (likely HIGH_TO_LOW for SIMPLE allocator) we
want to overwrite it for spinners (there's expectation they
will reside on low addresses).
Extend allocator API adding intel_allocator_alloc_with_strategy()
to support spinners rewriting.
v2: add change in api_intel_allocator test to compile properly
whole series.
Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Petri Latvala <petri.latvala@intel.com>
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Simple allocator borrowed from Mesa adopted for IGT use.
From default we prefer an allocation from the top of vm address space
(we can catch addressing issues pro-actively). When function
intel_allocator_simple_create() is used we exclude last page as HW
tends to hang on the render engine when full 3D pipeline is executed from
the last page. For more control of vm range user can specify range using
intel_allocator_simple_create_full() (with the respect of the gtt size).
v2: fix size calculation (don't allow to subtract number which can be
negative - as we got for canonical addresses with 47 bit set - Jason)
v3: change to new igt_map implementation, add refcounts in allocator
(according to Jason review comments)
v4: return ALLOC_INVALID_ADDRESS instead of assert for failed allocation
Signed-off-by: Dominik Grzegorzek <dominik.grzegorzek@intel.com>
Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Petri Latvala <petri.latvala@intel.com>
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