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* gpu: nvgpu: add error prints for do_idle() failureDeepak Nibade2015-03-18
| | | | | | | | | | | | | | 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>
* gpu: nvgpu: Remove gk20a sparse texture & PTE freeingTerje Bergstrom2015-03-18
| | | | | | | | | | | | 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
* gpu: nvgpu: vgpu: debugger interface fixesAingara Paramakuru2015-03-18
| | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: add gk20a_scale_exit()Konsta Holtta2015-03-18
| | | | | | | | | | | | 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>
* gpu: nvgpu: remove platform device on exitKonsta Holtta2015-03-18
| | | | | | | | | | | | | 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>
* gpu: nvgpu: clean up module deinitializationKonsta Holtta2015-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: Retrieve intr & reset id from HWTerje Bergstrom2015-03-18
| | | | | | | | | | | | 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
* gpu: nvgpu: GPU characteristics additionsSami Kiminki2015-03-18
| | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: force CAR reset in do_idle() for gm20bDeepak Nibade2015-03-18
| | | | | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: Do not call ELPG if disabledTerje Bergstrom2015-03-18
| | | | | | | | | | | | | 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>
* gpu: nvgpu: fix sparse warningsDeepak Nibade2015-03-18
| | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: cde: cancel delayed_work during suspendSeshendra Gadagottu2015-03-18
| | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: fix reset clock in gm20bDeepak Nibade2015-03-18
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: Assign T18x an own platform dataTerje Bergstrom2015-03-18
| | | | | | | | | | 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
* gpu: nvgpu: T18x supportKenneth Adams2015-03-18
| | | | | | | | | | 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>
* gpu: nvgpu: Per-chip interrupt processingTerje Bergstrom2015-03-18
| | | | | | | | | | | | | 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
* Revert "gpu: nvgpu: GR and LTC HAL to use const structs"Sam Payne2015-03-18
| | | | | | | | | | | 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>
* gpu: nvgpu: cde: move GK20A_CDE to platform dataKonsta Holtta2015-03-18
| | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: GR and LTC HAL to use const structsTerje Bergstrom2015-03-18
| | | | | | | | | | | 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
* gpu: nvgpu: Enable clocks only if definedTerje Bergstrom2015-03-18
| | | | | | | | | | 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>
* gpu: nvgpu: Fix build without Tegra clk frameworkTerje Bergstrom2015-03-18
| | | | | | | | | | | | 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
* gpu: nvgpu: Fix build break with no PM runtimeTerje Bergstrom2015-03-18
| | | | | | | | | | 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>
* gpu: nvgpu: Remove get and put client routinesKonsta Holtta2015-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: Do not init interrupt maskTerje Bergstrom2015-03-18
| | | | | | | | | | 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
* gpu: nvgpu: Common VM initializerTerje Bergstrom2015-03-18
| | | | | | | | | | | | | | 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>
* gpu: nvgpu: Remove unused symbolsTerje Bergstrom2015-03-18
| | | | | | | | | Remove unused symbols in platform file and gk20a.c. Bug 1558739 Change-Id: If160a75061ecb4ad9cbc4abfb9bc409457299738 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Add no-op stubs for vgpuKonsta Holtta2015-03-18
| | | | | | | | | | | | 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>
* gpu: nvgpu: rename gpu ioctls and structs to nvgpuKonsta Holtta2015-03-18
| | | | | | | | | | | | | | 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>
* gpu: nvgpu: implement poll() for semaphoresKonsta Holtta2015-03-18
| | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: ioctl support flags in gpu characteristicsKonsta Holtta2015-03-18
| | | | | | | | | | | | | | 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>
* gpu: nvgpu: remove gk20a_handleDeepak Nibade2015-03-18
| | | | | | | | | | | | | | | | | | | | | | | 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
* gpu: nvgpu: gm20b: Regenerate clock gating listsTerje Bergstrom2015-03-18
| | | | | | | | | | 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
* gpu: nvgpu: remove hard coded GPU nameDeepak Nibade2015-03-18
| | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: support gk20a virtualizationAingara Paramakuru2015-03-18
| | | | | | | | | | | | | 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>
* gpu: nvgpu: 3d.emc bandwidth ratio policySamuel Russell2015-03-18
| | | | | | | | | | | | | 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>
* gpu: nvgpu: Add boost once GPU is initializedTerje Bergstrom2015-03-18
| | | | | | | | | | | 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
* gpu: nvgpu: Add compression state IOCTLsLauri Peltonen2015-03-18
| | | | | | | Bug 1409151 Change-Id: I29a325d7c2b481764fc82d945795d50bcb841961 Signed-off-by: Lauri Peltonen <lpeltonen@nvidia.com>
* gpu: nvgpu: CDE supportArto Merilainen2015-03-18
| | | | | | | | | | | | | | 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>
* gpu: nvgpu: poweron host1x explicitlyDeepak Nibade2015-03-18
| | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: Fork GM20B clock from GK20A clockHoang Pham2015-03-18
| | | | | | | | | 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>
* gpu: nvgpu: Init clock debugfs after clock supportAlex Frid2015-03-18
| | | | | | | | | | | | 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>
* gpu: nvgpu: flush write before unlockingSang-Hun Lee2015-03-18
| | | | | | | | | | | | | | | | | | | - 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>
* gpu: nvgpu: Remove unused GK20A cooling deviceAlex Frid2015-03-18
| | | | | | | | | | | 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>
* gpu: Split clk_ops for GK20A and GM20BHoang Pham2015-03-18
| | | | | | | | | | | 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>
* gpu: nvgpu: force idle if railgate not supportedDeepak Nibade2015-03-18
| | | | | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: increase delays in do_idle()Deepak Nibade2015-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: fix race between do_idle() and unrailgate()Deepak Nibade2015-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: Support probing host1x link from appsArto Merilainen2015-03-18
| | | | | | | | | | | 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
* gpu:nvgpu:sysfs node to update aelpg parameterMahantesh Kumbar2015-03-18
| | | | | | | | | | | | | | | | 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>
* gpu: nvgpu: Remove GPU MMIO access on power/rail gateAlex Waterman2015-03-18
| | | | | | | | | | | | 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>
generated by cgit v1.2.2 (git 2.25.0) at 2024-08-25 03:04:27 -0400