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* gpu: nvgpu: Split non-stall interrupt handlingTerje Bergstrom2017-06-07
| | | | | | | | | | | | | | | | | | | | | | Split handling of stalling interrupt to Linux specific chip agnostic and OS independent chip specific parts. Linux specific chip independent part contains handler for ISR and passing the control to a bottom half worker. It uses the new MC HALs intr_nonstall (query interrupt status), intr_nonstall_pause (pause interrupts), intr_nonstall_resume (resume interrupts), and is_intr1_pending (query per-engine interrupt bit). MC HAL isr_nonstall is removed, because its work is now handled in chip independent code. JIRA NVGPU-26 Change-Id: I3e4c9905ef6eef7f1cc9f71b0278518ae663f87e Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1497048 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add MC HAL is_intr1_pendingTerje Bergstrom2017-06-07
| | | | | | | | | | | | | | | Add MC HAL is_intr1_pending. At the same time introduce nvgpu_unit that is passed as parameter to is_intr1_pending. The API is passed contents of intr1 register and an engine number, and returns true if there's an interrupt pending for the engine. JIRA NVGPU-26 Change-Id: I8e6363dd78572f8e41dbab2b258036ed168b6f75 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1497870 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Split stalling interrupt handlingTerje Bergstrom2017-05-26
| | | | | | | | | | | | | | | | | | | | | | Split handling of stalling interrupt to Linux specific chip agnostic and OS independent chip specific parts. Linux specific chip independent part contains handler for ISR and passing the control to a bottom half. It uses the new MC HALs intr_stall (query interrupt status), intr_pause (pause interrupts) and intr_resume (resume interrupts). MC HAL isr_stall now returns void and gets called in thread context and thus remove isr_thread_stall and replace the implementation with isr_stall. JIRA NVGPU-26 Change-Id: I206f330f6fc4a1f4def47c5f986585ac4080216d Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1480243 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Remove MC accesses from gk20a.cTerje Bergstrom2017-03-26
| | | | | | | | | | | | | | | Clean up gk20a.c by removing direct accesses to MC and moving the accesses to happen via MC HAL. The chip detection logic has to violate the HAL and call gk20a version directly, because HAL ops cannot be set up before chip has been identified. Change-Id: I4cdd0ef3fcf7d3b561a3fca4247a8356fe8d18e1 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1321576 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: refactor interrupt handlingDavid Nieto2017-03-14
| | | | | | | | | | | | | | | | | | | | | JIRA: EVLR-1004 (*) Refactor the non-stalling interrupt path to execute clear on the top half, so on dGPU case processing of stalling interrupts does not block non-stalling one. (*) Use a worker thread to do semaphore wakeups and allow batching of the non-stalling operations. (*) Fix a bug where some gpus will not properly track the completion of interrupts, preventing safe driver unloads Change-Id: Icc90a3acba544c97ec6a9285ab235d337ab9eefa Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1312796 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Lakshmanan M <lm@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: Navneet Kumar <navneetk@nvidia.com>
* gpu: nvgpu: Allow enabling/disabling MC interruptMahantesh Kumbar2015-03-18
| | | | | | | | | | | | Added method to enable/disable MC interrupt by unit Bug 200064127 Change-Id: I89e794d5b69a2a93642e2df437d6744bf595f021 Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com> Reviewed-on: http://git-master/r/661211 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-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