When a pbdma fault needs a channel teardown, do the recovery/teardown
process before acking the pbdma interrupt status back. Acking it causes
the hardware to proceed which could release fences too early before the
involved channel(s) have been found to be broken.
With these host copyengine interrupts, the teardown sequence is light
and proceeds even with the pbdma intr flag still set; there are no
engines to reset when these pbdma launch check interrupts happen. The
bad tsg is just disabled and the channels in it aborted.
A few unit tests are so heavily affected by this refactor that they
would need to be rewritten. They're not strictly needed at the moment,
so do only half of the rewrite: just delete them.
Bug 200611198
Change-Id: Id126fb158b6d05e46ba124cd426389046eedc053
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2392669
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The FIFO pbdma map is an array of bit maps that link PBDMAs to runlists.
This array allows other software to query what PBDMA(s) serves a given
runlist. The PBDMA map is read verbatim from an array of host registers.
These registers are stored in a kmalloc()'ed array.
This causes a problem for the device management code. The device
management initialization executes well before the rest of the FIFO
PBDMA initialization occurs. Thus, if the device management code
queries the PBDMA mapping for a given device/runlist, the mapping has
yet to be populated.
In the next patches in this series the engine management code is subsumed
into the device management code. In other words the device struct is
reused by the engine management and all host SW does is pull pointers to
the host managed devices from the device manager. This means that all
engine initialization that used to be done on top of the device
management needs to move to the device code.
So, long story short, the PBDMA map needs to be read from the registers
directly, instead of an array that gets allocated long after the device
code has run.
This patch removes the pbdma map array, deletes two HALs that managed
that, and instead provides a new HAL to query this map directly from
the registers so that the device code can use it.
JIRA NVGPU-5421
Change-Id: I5966d440903faee640e3b41494d2caf4cd177b6d
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2361134
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unit_assert macro is provided to check a condition and execute bail_out
action given as a second argument.
Currently, in fifo unit, unit_assert() is redefined as assert with
common bail_out action. However, name assert() creates confusion with
linux assert macro. So, this patch removes redefined assert macro and
replaces with unit_assert.
Jira NVGPU-4684
Change-Id: I3a880f965a191f16efdabced5e23723e66ecaf3c
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2276863
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Add the following cases:
- timeout == 0 in gm20b_pbdma_acquire_val
- 32-bit overflow in pbdma_method1_r computation.
Note: 32-bit overflow for pbdma_method0_r in
gm20b_pbdma_is_sw_method_subch is hindered by overflow
in pbdma_method1_r which occurs first.
Jira NVGPU-4673
Change-Id: If8202a4397115efb5af490b1ce974b43699e15c6
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2276051
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