The compiler option -Wmissing-prototypes is being enabled globally in
the upstream Linux kernel and this causes build failures for nvgpu. The
build failures occur because either the driver is missing an include
file which has the prototype or because the function is not declared
statically when it should be (ie. there are no external users).
Fix the various build failures and enable -Wmissing-prototypes to
prevent any new instances from occurring.
Bug 4404965
Change-Id: I551922836e37b0c94c158232d6277f4053e9d2d3
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/3027483
(cherry picked from commit e8cbf90db2d0db7277db9e3eec9fb88d69c7fcc7)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/3035518
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Current clk unit has multiple header files under pmuif folder.
This has combination of public struct which is accessed outside the
unit and private struct which is accessed within clk unit.
This patch segregates them based on their accessibility.
All private items are moved into ucode_clk_inf.h from pmuif which only
clk can access.
All public items are moved into include/clk.h which other units can
access
This will help in documentation of items for public items.
NVGPU-4491
Change-Id: Iccb0571e05ecb3cb13363390bed8c7214409b543
Signed-off-by: Abdul Salam <absalam@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2292318
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Restrict access to devfreq when there are active set requests in the
clk_arbiter. We make the following changes in the patch.
1) Add a global counter in the struct gk20a named clk_arb_global_nr which
is used to track the number of active set requests in the system.
2) Anytime a set request is successfully made by the userspace,
clk_arb_global_nr is incremented by 1 and during the completion of
request(releasing the corresponding file handle), clk_arb_global_nr is
decremented by 1.
3) gk20a_scale_target(invoked by devfreq to set the new frequency based
on load) atomically checks clk_arb_global_nr. If the value = 0, the
code simply continue or else if its > 0, it quits thus making devfreq
requests mutually exclusive with the clk_arbiter.
Bug 2061372
Change-Id: I5d19de03e45520f4ff8fccb97b1f1589d04c8ab8
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1790002
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GM20B GPCPLL registers are accessed via sys address space with the
exception of the last dvfs2 register that can be accessed only through
bcast address. However, in debugfs loop dvfs2 sys address should be
used as loop terminator; otherwise, loop body is never executed, and
GPCPLL registers debugfs node is broken. Fixed it in this commit.
Change-Id: Ifea839757fda7d97b2c9238178227ab198526ab0
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1808784
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