| Commit message (Collapse) | Author | Age |
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Add error prints in gk20a_do_idle() to narrow down
the failure point
Bug 200064302
Change-Id: Iffe1151bdc200a79b88e273b3b01523f8e46d130
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/664446
(cherry picked from commit bf1cd9b5551d27cb5cc468795cd147376f48e482)
Reviewed-on: http://git-master/r/666218
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
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Remove support for gk20a sparse textures. We're using implementation
from user space, so gk20a code is never invoked.
Also removes ref_cnt for PTEs, so we never free PTEs when unmapping
pages, but only at VM delete time.
Change-Id: I04d7d43d9bff23ee46fd0570ad189faece35dd14
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/663294
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To run CUDA apps, the following minimal changes have been
made:
- power-gating is disabled for vgpu
- regop rd/wr returns -ENOSYS
Tools (debugger/profiler) support is known to not work and
not needed at this time.
Bug 200043227
Change-Id: I923caad78450e72d310fb9290cf2849ed5460ad5
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/592878
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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When removing the module, remove the device from devfreq and free
resources allocated when scaling is initialized.
Bug 1476801
Change-Id: I7bb0f8112a5bf7e5ce2fc56cf8af7059d910002c
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/594444
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Add ->remove() for undoing the ->probe() and ->late_probe() in
gk20a_platform devices, and call it when gk20a is removed.
Bug 1476801
Change-Id: Ic9b29c0a7ea4a4cae7b5a0f66774bd799eb28434
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/594443
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Fix gk20a module removal so that the driver can be correctly removed
when built as a module (CONFIG_GK20A=m). Reinsertion correctly will need
more missing deinit calls, which are not yet implemented.
This change has no effect yet on any builds since the module is built in
by the defconfig.
- don't free threaded irqs that are bound to the device
- destroy cde if it is enabled
- remove all debugfs entries recursively generated directly and by cde,
pmu, clk etc.
- free secure buffer if it exists
- remove pm_runtime_put, since it doesn't have a pairing get
- pm_runtime defines proper function stubs if it is not enabled, so
remove ifdefs and query pm_runtime_enabled()
- null and free gk20a only after all deinit has been done
Bug 1476801
Change-Id: I73ad72832bdb501fd7071d6ac68d461ee63a760d
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/594442
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Query interrupt number and reset id from HW. Use the number
from HW when enabling and detecting interrupts.
Bug 200036089
Bug 1567274
Change-Id: If9cb4db79a19dcb193ba7ad9db7081f4fe1ab433
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/600988
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Add the following info into GPU characteristics: available big page
sizes, support indicators for sync fence fds and cycle stats, gpc
mask, SM version, SM SPA version and warp count, and IOCTL interface
levels. Also, add new IOCTL to fetch TPC masks.
Bug 1551769
Bug 1558186
Change-Id: I8a47d882645f29c7bf0c8f74334ebf47240e41de
Signed-off-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-on: http://git-master/r/562904
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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In gk20a_do_idle(), we wait for platform->railgate_delay
to allow GPU to go into rail gate
But sometimes we set platform->railgate_delay = INT_MAX
to disable GPU rail gating but allow it to suspend during
low power state
Due to this, force_idle API fails (it waits for INT_MAX)
To fix this, allow forcing CAR reset instead of rail gating
with flag "force_reset_in_do_idle" defined in gk20a_platform
Set this flag for gm20b until we fix the railgate_delay
Bug 1517584
Change-Id: I031aa56f87d4db3727e2c3a3e5eeaf18503dd449
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/593704
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Do not call PMU ELPG calls if ELPG should be disabled. Also skips
initialization of PMU ucode if PMU is disabled.
Bug 1567274
Change-Id: Ia9cd3b553c358142ee05a1b0e0832f9412f7cf17
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/593335
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
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Fix below sparse warnings :
warning: Using plain integer as NULL pointer
warning: symbol <variable/funcion> was not declared. Should it be static?
warning: Initializer entry defined twice
Also, remove dead functions
Bug 1573254
Change-Id: I29d71ecc01c841233cf6b26c9088ca8874773469
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/593363
Reviewed-by: Amit Sharma (SW-TEGRA) <amisharma@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
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During gpu suspend, cancel all pending delayed cde work
to avoid issues of scheduling this delayed work
during suspend/resume when gpu is not ready.
Bug 1574000
Change-Id: I2b6bfa489435a781dc576a077f9af01b1e1628ce
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/593557
Reviewed-by: Shridhar Rasal <srasal@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Tested-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
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To assert reset on GPU, we store "gpu_ref" clock in
platform->clk[0] and use it to assert/deassert reset
But for gm20b, "gpu_ref" is no longer resettable.
To fix this, add two callbacks in gk20a_platform :
.reset_assert and .reset_deassert
Also, add a pointer "clk_reset" to store the clock
which needs to be reset
For gk20a specific implementation, we continue to
reset platform->clk[0]
For gm20b specific implementation, we first request
"gpu_gate" clock, store it and use it to assert reset
Bug 1513685
Bug 1517584
Change-Id: I15a583a4a07eb663b442084be8b8c7d0c7c7a142
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
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Bug 1572701
Change-Id: Id135eb2328765d00349b478d695914f7f8c5edf0
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/592095
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
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nvgpu framework and build for T18x
Bug 1567274
Change-Id: I77835302a1110573008869d1106eface512bb9b1
Signed-off-by: Ken Adams <kadams@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Move accesses to MC registers under HAL so that they can be
reimplemented per chip.
Do chip detection and HAL initialization only once.
Bug 1567274
Change-Id: I20bf2f439d267d284bfd536f1a1dfb5d5a2dce4c
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/590385
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This reverts commit 41b82e97164138f45fbdaef6ab6939d82ca9419e.
Change-Id: Iabd01fcb124e0d22cd9be62151a6552cbb27fc94
Signed-off-by: Sam Payne <spayne@nvidia.com>
Reviewed-on: http://git-master/r/592221
Tested-by: Hoang Pham <hopham@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Mitch Luban <mluban@nvidia.com>
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CONFIG_GK20A_CDE has not even been used for enabling CDE, just for
initializing it at boot time, and it was disabled; initialization has
been done late when the engine is first used. Remove the config
setting and add information about CDE support in gk20a platform data,
forcing the initialization at boot time. Boot time init removes rare
race conditions when CDE would be initialized by first user.
Bug 200046882
Change-Id: I85d5fb73dc27acbbe203138d25f6e342de030d93
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/562855
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Convert GR and LTC HALs to use const structs, and initialize them
with macros.
Bug 1567274
Change-Id: Ia3f24a5eccb27578d9cba69755f636818d11275c
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/590371
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Enable clocks only if they are defined. This prevents panic in cases
where clock does not need to be enabled explicitly.
Bug 1567274
Change-Id: I7113c6d874b61acc2646effda9c02d3d1817c531
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Do not build clock code if TEGRA_CLK_FRAMEWORK is not defined. Also
make GK20A_DEVFREQ depend on TEGRA_CLK_FRAMEWORK, and build scaling
governor only if GK20A_DEVFREQ is enabled.
Bug 1567274
Change-Id: I6ea1462e7a110fb46c9d66ceda71167cff19699e
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/562475
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Bug 1567274
Change-Id: I6ca10e329a46edf859f5b22f18d0da9bc8f41cd6
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/562474
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
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gk20a_get_client() and gk20a_put_client() routines are effectively dead
code. The GPU has been using pm_runtime for reference counting whether
the device should be turned on or off, and gk20a_get_client() and
gk20a_put_client() have had no positive effect on the behaviour.
In worst case these functions trigger some issues as they may trigger
code paths that should not be run. There is also a race between get/put
and busy/idle.
This patch removes the functions and reworks as_gk20a.c to correctly use
gk20a_busy()/gk20a_idle() where put/get was required.
Additionally, finalize_poweron() is moved to gk20a_busy(), similarly as
it was with gk20a_get_client(). If pm_runtime is not in use, the device
is only powered on and never off. Currently this affects vgpu power
management since it does not use pm_runtime yet.
Bug 1562096
Change-Id: I3162655f83457e9caccd9264eed36b5d51e60c52
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/414998
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Tested-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Interrupt mask init state is correct, so do not touch it.
Bug 1567274
Change-Id: I70673e406944823bd1cbfeee93ec75ce1e1af5da
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/558292
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Merge initialization code from gk20a_init_system_vm(),
gk20a_init_bar1_vm() and gk20a_vm_alloc_share() into gk20a_init_vm().
Remove redundant page size data, and move the page size fields to be
VM specific.
Bug 1558739
Bug 1560370
Change-Id: I4557d9e04d65ccb48fe1f2b116dd1bfa74cae98e
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Remove unused symbols in platform file and gk20a.c.
Bug 1558739
Change-Id: If160a75061ecb4ad9cbc4abfb9bc409457299738
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Implement empty or -ENOSYS functions for vgpu if
CONFIG_TEGRA_GR_VIRTUALIZATION is not enabled, and remove ifdefs around
the calling code.
Change-Id: Idc75c9bc486d661786bc222bd9e0380aa7766e78
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/552898
Reviewed-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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To help remove the nvhost dependency from nvgpu, rename ioctl defines
and structures used by nvgpu such that nvhost is replaced by nvgpu.
Duplicate some structures as needed.
Update header guards and such accordingly.
Change-Id: Ifc3a867713072bae70256502735583ab38381877
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/542620
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Add poll interface and control ioctls for waiting for GPU job completion
via semaphores.
Poll on a gk20a channel file waits for events from pending semaphore
interrupts (stalling) of that channel. New ioctls enable and disable the
events, and clear a single interrupt event so that next poll doesn't
wake up for it again.
Bug 1528781
Change-Id: I5c6238966b5d0900c8ab263c6a7f8f2611901f33
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/497750
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Expose supported nvgpu ioctls to userspace via bits in the flags field
of nvhost_gpu_characteristics; currently define two bits for special
memory allocation support.
Bug 1539747
Change-Id: I1bc9333b12825d07a00b7a4136ae9d35816a5855
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/495942
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Remove static variable gk20a_handle used to store pointer to
struct gk20a
Use below device tree APIs to get pointer to platform_device
and then struct gk20a
device_node = of_find_matching_node()
platform_device = of_find_device_by_node(device_node)
Also, use two versions of do_idle()/do_unidle() APIs -
one will receive void (to be used from outside GPU driver)
and another will receive platform_device (to be used within
GPU driver where it is available)
Change-Id: I9f2c7610646c5fbcd3d99a1b03dc0364201272a8
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/496508
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Ken Adams <kadams@nvidia.com>
GVS: Gerrit_Virtual_Submit
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Regenerate clock gating lists. Add new blocks, and takes them into
use. Also moves some clock gating settings to be applied at the
earliest possible moment right after reset.
Change-Id: I21888186c200f7a477c63bd3332e8ed578f63741
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/457698
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In gk20a_do_idle(), to get pointer to platform_device of gk20a,
we use bus_find_device_by_name() and pass "gk20a.0" to it
But this hard coding fails on gm20b since GPU device name
there is "gpu"
Hence to fix this add a static pointer handle "gk20a_handle"
to struct gk20a in gk20a.c
Now we can access this global pointer inside do_idle()
to get gk20a pointer and from that we can get pointer to
platform_device
Change-Id: I1a65588e34ad36efed0fa587bb365f0ee81e253d
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/486887
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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The nvgpu driver now supports using the Tegra graphics virtualization
interfaces to support gk20a in a virtualized environment.
Bug 1509608
Change-Id: I6ede15ee7bf0b0ad8a13e8eb5f557c3516ead676
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/440122
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Modify the 3d.emc policy to use a formula based on bandwidth and
utilization instead of the current sku-dependent policy.
Bug 1364894
Change-Id: Id97f765a48f0aa9f5ebeb0c82bccb22db474a1ae
Signed-off-by: Samuel Russell <samuelr@nvidia.com>
Reviewed-on: http://git-master/r/453586
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Workaround for GPU hang if boost turns GPU on before it is
initialized.
Bug 1435870
Change-Id: I07d0617049612344ca7c494da8cb8d75789984e5
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/453375
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Bug 1409151
Change-Id: I29a325d7c2b481764fc82d945795d50bcb841961
Signed-off-by: Lauri Peltonen <lpeltonen@nvidia.com>
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This patch adds support for executing a precompiled GPU program to
allow exporting GPU buffers to other graphics units that have color
decompression engine (CDE) support.
Bug 1409151
Change-Id: Id0c930923f2449b85a6555de71d7ec93eed238ae
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/360418
Reviewed-by: Lauri Peltonen <lpeltonen@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Currently gk20a gets reference of host1x via phandle in
Device Tree. But runtime PM does not seem to be handling power
dependencies too well in this case and hence some times host1x
is off when we need it.
To fix this, exlicitly power on host1x while powering gpu up.
Do this via "busy" and "idle" callbacks from gk20a_platform
Bug 1534272
Bug 200022536
Change-Id: Ia562ee19722cfc8edc5626a5a058ab8edfe3d206
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
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Bug 1450787
Change-Id: Id7fb699d9129a272286d6bc93e0e95844440a628
Signed-off-by: Hoang Pham <hopham@nvidia.com>
Reviewed-on: http://git-master/r/440536
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
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Initialized GK20A clock debugfs after clock support
hardware and software are ready.
Bug 1450787
Change-Id: I8ec2ef303a84b9151b7ce209a1864f1729382a44
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: http://git-master/r/440973
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
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- gk20a_enable is reading the clock after unlocking the spinlock
to flush any previous write
- This could lead to a race if any write afterwards assume
the write has been completed already
- Read the clock before unlocking to ensure all previous writes
have been completed before letting any other thread use gk20a
Bug 200007520
Change-Id: I737fbbe825c68b25ca256c4a8ee2b99aa8baf0f5
Signed-off-by: Sang-Hun Lee <sanlee@nvidia.com>
Reviewed-on: http://git-master/r/418485
(cherry picked from commit 2aed542a719caa69620766bf2dceefe50626c189)
Reviewed-on: http://git-master/r/437842
Reviewed-by: Mitch Luban <mluban@nvidia.com>
Tested-by: Mitch Luban <mluban@nvidia.com>
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Removed unused, obsolete GK20A cooling device.
Bug 1450787
Change-Id: I5b02546d0405dd518ec841d903e650a8d38db8f2
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: http://git-master/r/437942
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
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Split clk_ops for GK20A and GM20B into different files
Bug 1450787
Change-Id: I34d16c54ac40c70854e80588475434c9e50b51a5
Signed-off-by: Hoang Pham <hopham@nvidia.com>
Reviewed-on: http://git-master/r/437771
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
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Add a way to force idle and reset the GPU in case where GPU
rail gating is not supported
(i.e. platform->can_railgate = false)
In this case, we follow below sequence :
- once GPU is idle, get runtime reference which enables the clocks
- call prepare_poweroff() to save the state explicitly
- perform explicit reset assert/deassert
- call finalize_poweron() to restore the state
- drop the runtime reference taken earlier
Bug 1525284
Change-Id: Id5f3ec152093acd585631dfbf785d8e0561f9048
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/435620
GVS: Gerrit_Virtual_Submit
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
Tested-by: Arto Merilainen <amerilainen@nvidia.com>
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Increase the wait delays in do_idle() to 2000 mS and make use
of msleep instead of mdelays
Also, to check if GPU is rail gated or not, add a do-while()
loop which will keep checking the status and bail out as soon
as GPU is rail gated
This increase in delays is required to allow GPU sufficient
time to complete its work and get rail gated
These delays are specially needed during stress testing where
it is possible that a large amount of GPU work is blocked
during do_idle() and then it might take more time to complete
it while next do_idle() is waiting for it
Also, remove waiting on API gk20a_wait_channel_idle() for each
channels since it is sufficient to wait for refcount to be 1
bug 1529160
Change-Id: Ie541485fbdda76d79ae4a75dda928da240fc5d8f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/434192
(cherry picked from commit 5a621bf2aaf3355e1330a662dc98e943d68ef86d)
Reviewed-on: http://git-master/r/435133
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
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While we are executing do_idle() API, it is possible that
unrailgate() gets invoked in midst of idling the GPU and
this can result in failure of do_idle()
To prevent simultaneous execution of these methods,
add a mutex railgate_lock and acquire it during
do_idle() and unrailgate() APIs
Also, keep this lock held if do_idle() is successful.
In success, lock will be released in do_unidle(),
otherwise release this lock before returning
Note that this lock should not be held in railgate() API
since we do not want it to be blocked during do_idle()
bug 1529160
Change-Id: I87114b5367eaa217376455a2699c0d21c451c889
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/434190
(cherry picked from commit 561dc8e0933ff2d72573292968b893a52f5f783a)
Reviewed-on: http://git-master/r/435131
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
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This patch adds support to check if the host1x link exists and is
supported using the gpu characteristics ioctl.
Bug 1459653
Change-Id: I832eea217ed7f007e341dfde5769887e0882d6bb
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/433058
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Added sysfs node to update aelpg parameter.
Pass parameter as below sequence,
SAMPLING_PERIOD_PG_DEFAULT_US, MINIMUM_IDLE_FILTER_DEFAULT_US,
MINIMUM_TARGET_SAVING_DEFAULT_US, POWER_BREAKEVEN_DEFAULT_US,
CYCLES_PER_SAMPLE_MAX_DEFAULT
Bug 1464737
Change-Id: I46873c463820f30f190c722d7ed038622cb2710f
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/422702
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
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This is to weed out accesses to the GPU while it is gated. Otherwise
the accesses are silently dropped or cause a HW hang (on older chips).
Bug 1514949
Change-Id: Ice4cdb9f1f736978ebb3db847f39c7439bf98134
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/416339
Reviewed-by: Mitch Luban <mluban@nvidia.com>
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