Add clk arbiter support for tu104
setup clk_arb for supporting functions in hal_tu04
TU104 supports GPCCLK and not GPC2CLK
Remove multiplication and division by 2 to convert gpcclk to gpc2clk
Provide support for following features
*Domains: Currently GPCCLK is supported
*clk Range: From P0 min to P0 max
*Freq Points: Gives the VF curve from PMU
*Default: Default value(P0 Max)
*Current Pstate: P0 is supported
All request for change is freq is validated against P0 value
Out of bound values are trimmed to match the Pstate limits
Multiple requests are supported and max of that will be set
Requests are sent to PMU via change sequencer
Bug 200454682
JIRA NVGPU-1653
Change-Id: I36735fa50c7963830ebc569a2ea2a2d7aafcf2ab
Signed-off-by: Abdul Salam <absalam@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1982078
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
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NVGPU_GPU_IOCTL_GET_EVENT_FD should return -EINVAL when invoked in any
chips which donot have NVGPU_SUPPORT_DEVICE_EVENTS enabled. This is
resulting in an use-after-free error in UBSAN from syzkaller fuzzing
in the nvgpu driver.
Also, as an addon remove the flag clk_arb_events_supported as the
device events check can be made using the flag
NVGPU_SUPPORT_DEVICE_EVENTS.
Bug 200463292
Change-Id: I0ed0217704daa9e401b57a268a30b9f798928e4a
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1956070
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
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MISRA rule 10.4 doesn't allow arithmetic conversions on operands of
different essential type category.
Fix violations where an arithmetic conversion is performed on boolean
and non-boolean types.
JIRA NVGPU-994
Change-Id: I2af9937678462b632bb6ec6178e10d02104fc3bc
Signed-off-by: Amurthyreddy <amurthyreddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1832337
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currently clk-arb is setting GPC clock frequency to minimum
frequency and once clk-arb support is enabled for QNX, QNX
will also runs to minimum frequency which is not expected.
changing default GPC clock frequency to max.
Bug 200422845
Change-Id: Ic13c1b6ee2c71442e4248f0a11b8056100cd2a7d
Signed-off-by: Prateek sethi <prsethi@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1842388
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mclk is not enabled yet for IGPUs and as such we donot allocate memory
and incorrectly free them in gp10b_clk_arb_cleanup. This is corrected
by removing the freeing of the mclk pointers in gp10b_clk_arb_cleanup.
As an addon also change gk20a/gk20a.h to <nvgpu/gk20a.h> in
clk_arb_gp10b.c
Bug 2061372
Change-Id: I3bba20443b9ef7beb88251779edd67a32f6c9d20
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1836553
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Prateek Sethi <prsethi@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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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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This patch constructs clk_arbiter specific code for gp10b as well as
gv11b and does the necessary plumbing in the clk_arbiter code. The
changes made are as follows.
1) Constructed clk_arb_gp10b.* files which add support for clk_arb
related HALS including the nvgpu_clk_arb_init and nvgpu_clk_arb_cb.
This doesn't have support for debugfs nor the VFUpdateEvent yet and
consequently no support for arb->notifications.
2) Added gpcclk specific variables corresponding to every gpc2clk in
a given clk_arb related struct.
3) Linux specific support_clk_freq_controller is assigned true in
platform_gp10b.c and platform_gv11b.c files.
4) Incremented the clk_arb_worker.put atomic variable during
worker_deinit so as to allow the worker thread to be stopped.
5) Added the flag clk_arb_events_supported as part of struct
nvgpu_clk_arb. This flag is used to selectively account for the extra
refcounting present in OS specific code i.e.
nvgpu_clk_arb_commit_request_fd. For igpus, the extra refcount is
reduced during nvgpu_clk_arb_release_completion_dev.
Bug 2061372
Change-Id: Id00acb106db2b46e55aa0324034a16a73723c078
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1774281
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