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path: root/drivers/gpu/nvgpu/clk/clk_arb.c
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* gpu: nvgpu: Change license for common files to MITTerje Bergstrom2017-09-26
| | | | | | | | | | | | Change license of OS independent source code files to MIT. JIRA NVGPU-218 Change-Id: I1474065f4b552112786974a16cdf076c5179540e Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1565880 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: allow bind to be interruptedDavid Nieto2017-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change solves two problems: (*) the possibility of a crash due to interrupting the gpu initialization following a bind (*) a IOVA memory leak that could prevent the GPU from binding after about 200 bind/unbind cycles A detailed list of fixes: - chek that arbiter is initialized before freeing it. - do not re-enable interrupts when MSI is enabled on unbind. - free the semaphore sea on unbind. - ensure we dont double load the vbios. - check return value of nvgpu_mutex_init for semaphores. - add corresponding nvgpu_mutex_destroy calls. bug 1816516 Change-Id: Ia8af73019e0e1183998855d55bb3eea09672a8b7 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1465302 Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-by: David Jarrett <djarrett@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1563019 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Unify remove/shutdown codepathsDavid Nieto2017-09-15
| | | | | | | | | | | | | | | | | | | | | The following changes are part of the porting of the bind/unbind functionality. These changes reuse the shutdown codepaths in iGPU and dGPU and fix a locking issue with in gk20a_busy() where the usage count can lead to a deadlock during the driver shutdown. It fixes a racing condition with the gr/mm code by invalidating the sw ready flag while holding the busy lock JIRA: EVLR-1739 Change-Id: I62ce47378436b21f447f4cd93388759ed3f9bad1 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1554959 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: NVGPU abstraction for ACCESS_ONCEDebarshi Dutta2017-09-03
| | | | | | | | | | | | | | | | Construct a wrapper macro NV_ACCESS_ONCE(x) which uses OS specific versions of ACCESS_ONCE. e.g for linux, ACCESS_ONCE(x) is used. Jira NVGPU-125 Change-Id: Ia5c67baae111c1a7978c530bf279715fc808287d Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1549928 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Replace kref for refcounting in nvgpuDebarshi Dutta2017-08-24
| | | | | | | | | | | | | | | | - added wrapper struct nvgpu_ref over nvgpu_atomic_t - added nvgpu_ref_* APIs to access the above struct JIRA NVGPU-140 Change-Id: Id47f897995dd4721751f7610b6d4d4fbfe4d6b9a Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1540899 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
* gpu: nvgpu: Nvgpu abstraction for linux barriers.Debarshi Dutta2017-08-22
| | | | | | | | | | | | | | | | | construct wrapper nvgpu_* methods to replace mb,rmb,wmb,smp_mb,smp_rmb,smp_wmb,read_barrier_depends and smp_read_barrier_depends. NVGPU-122 Change-Id: I8d24dd70fef5cb0fadaacc15f3ab11531667a0df Signed-off-by: Debarshi <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1541199 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
* gpu: nvgpu: Add wrapper over atomic_t and atomic64_tDebarshi Dutta2017-08-17
| | | | | | | | | | | | | | | | | - added wrapper structs nvgpu_atomic_t and nvgpu_atomic64_t over atomic_t and atomic64_t - added nvgpu_atomic_* and nvgpu_atomic64_* APIs to access the above wrappers. JIRA NVGPU-121 Change-Id: I61667bb0a84c2fc475365abb79bffb42b8b4786a Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1533044 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: Move debugfs fields to os_linuxTerje Bergstrom2017-08-04
| | | | | | | | | | | | | Move all Linux specific debugfs dentry fields to struct nvgpu_os_linux. JIRA NVGPU-62 Change-Id: I615620005f5d042943dd2e478c1629bcc912c550 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1528263 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Move dev field from gk20a to nvgpu_os_linuxTerje Bergstrom2017-07-07
| | | | | | | | | | | | | Move field "struct device *dev" from struct gk20a to struct nvgpu_os_linux. The field is valid only for Linux. JIRA NVGPU-38 Change-Id: I09286aa3a9c5a2406e5a27c1fbf21b2c515b4dd4 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master/r/1514162 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Use accessor for finding struct deviceTerje Bergstrom2017-06-30
| | | | | | | | | | | | | Use dev_from_gk20a() accessor whenever accessing struct device * from struct gk20a. JIRA NVGPU-38 Change-Id: Ide9fca3a56436c8f62e7872580a766c4c1e2353e Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master/r/1507930 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: move mclk related functions to clkThomas Fleury2017-06-30
| | | | | | | | | | | | | | Move mclk related functions be moved to clk structure instead of pmu. We want to keep pmu only for basic pmu interaction and split clk, lpwr etc. Bug 1921094 Change-Id: I32394bc0e6d3657dfbd34dbcf19c9af56c12e194 Signed-off-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-on: https://git-master/r/1506586 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: mclk switching sequences for PG419Thomas Fleury2017-06-21
| | | | | | | | | | | | | | | | | VBIOS memory settings have been updated for PG419, significantly modifying MCLK switching sequences. This change adds support for PG419 tables, while remaining backward compatible with PG418. Bug 1921082 JIRA EVLR-1269 Change-Id: Ia8a1f8b3f482e348a46f0acb540af23287d9c11e Signed-off-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-on: http://git-master/r/1484110 (cherry picked from commit c2444ae89caf97da2702e8486cc8fb162b4f50b1) Reviewed-on: http://git-master/r/1485300 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Scrub gk20a_platform dependenciesTerje Bergstrom2017-05-18
| | | | | | | | | | | | | | Remove gk20a_platform dependencies from gk20a.h. This makes gk20a_platform a Linux platform specific data structure. Add #include for platform_gk20a.h in the source files that still depend on Linux. JIRA NVGPU-16 Change-Id: Ib098accd34a1f5066eb8680c387f9b178169f3f0 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1463547 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: fix static sparse warningsSachin Nikam2017-05-17
| | | | | | | | | | | | | | | | | | | | | | | | Fix below sparse warnings by making function static or including right header: - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/gp10b/fecs_trace_gp10b.c:45:6: warning: symbol 'gp10b_init_fecs_trace_ops' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/gp106/hal_gp106.c:195:5: warning: symbol 'gp106_init_gpu_characteristics' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/pstate/pstate.c:175:5: warning: symbol 'pstate_construct_super' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/pstate/pstate.c:195:5: warning: symbol 'pstate_construct_3x' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/pstate/pstate.c:204:15: warning: symbol 'pstate_construct' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/pstate/pstate.c:218:5: warning: symbol 'pstate_insert' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/clk/clk_arb.c:1457:6: warning: symbol 'nvgpu_clk_arb_ioctl_event_dev' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/pmgr/pmgr.c:68:5: warning: symbol 'pmgr_pwr_devices_get_power_u64' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/pmgr/pmgr.c:80:5: warning: symbol 'pmgr_pwr_devices_get_current_u64' was not declared. Should it be static? - $TOP/kernel/nvgpu/drivers/gpu/nvgpu/pmgr/pmgr.c:92:5: warning: symbol 'pmgr_pwr_devices_get_voltage_u64' was not declared. Should it be static? Bug 200299572 Change-Id: I0112ba3af5b858d2ce2a37a8366dcb6be1eb688d Signed-off-by: Sachin Nikam <snikam@nvidia.com> Reviewed-on: http://git-master/r/1482866 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: clip target frequencies in arbiterThomas Fleury2017-04-18
| | | | | | | | | | | | | | | | | | | | | It is currently possible to set GPCCLK lower than the minimum allowed frequency. Clip target GPCCLK/MCLK according to valid min/max range in arbiter. We could do this before submitting request to arbiter, but then we would loose information on the requested target frequency. Instead, we cache the clock range in arbiter context, and check target frequency when running arbiter. Bug 200288036 Change-Id: I29f5176e6365a926d1041430c05a63f0c8447e2b Reviewed-on: http://git-master/r/1460834 (cherry picked from commit eb626903e4fc046fe1f0eaee703c857e9a0f2b4d) Signed-off-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-on: http://git-master/r/1461715 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add wrapper nvgpu/kref.hDeepak Nibade2017-04-17
| | | | | | | | | | | | | Add wrapper header file nvgpu/kref.h. It #includes <linux/kref.h> in Linux. JIRA NVGPU-13 Change-Id: Ib8b002268b1960646986551ecb9f286e1e21e7f6 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/1463770 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add wrapper nvgpu/bug.hTerje Bergstrom2017-04-13
| | | | | | | | | | | | | Add wrapper header file nvgpu/bug.h. It #includes <linux/bug.h> in Linux. JIRA NVGPU-13 Change-Id: I7bf02ba554333f7cbd79d72bd1cb423c81ebcb49 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1461545 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add wrapper nvgpu/atomic.hTerje Bergstrom2017-04-12
| | | | | | | | | | | | | | | Add wrapper header file nvgpu/atomic.h. It #includes <linux/atomic.h> on Linux. JIRA NVGPU-13 Change-Id: I6f2b3a04c964e7664b1f61b6073b643629bd99c5 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1460792 Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
* gpu: nvgpu: Replace use of bitops.h and kernel.hTerje Bergstrom2017-04-12
| | | | | | | | | | | | | | | | | Remove use of linux/kernel.h and linux/compiler.h. We don't use anything in those headers. Also replace use of linux/bitops.h with new wrapper nvgpu/bitops.h. JIRA NVGPU-13 Change-Id: Iefa6b4598d5a5e7fc386c0a7a554e778a87010d6 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1460777 Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
* gpu: nvgpu: clk: Use new error macrosTerje Bergstrom2017-04-07
| | | | | | | | | | | | | | gk20a_err() and gk20a_warn() require a struct device pointer, which is not portable across operating systems. The new nvgpu_err() and nvgpu_warn() macros take struct gk20a pointer. Convert code to use the more portable macros. JIRA NVGPU-16 Change-Id: I58bb9e2fb7e5b18f74fbb92b70150cce97968fc3 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1457347 Reviewed-by: Alex Waterman <alexw@nvidia.com>
* gpu: nvgpu: Remove last Linux kmem usageAlex Waterman2017-04-04
| | | | | | | | | | | | | | | | | | Replace the last of the Linux kmem API usage with nvgpu kmem calls instead. Several places are left alone - allocating the struct gk20a in particular. Also one function was updated in the clk code to take a struct gk20a as an argument so that it could use nvgpu_kmalloc(). Bug 1799159 Bug 1823380 Change-Id: I84fc3f8e19c63d6265bac6098dc727d93e3ff613 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1331702 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Move channel IOCTL code to Linux moduleTerje Bergstrom2017-04-04
| | | | | | | | | | | | | Move channel IOCTL specific code to Linux module. This clears some Linux dependencies from channel_gk20a.c. JIRA NVGPU-32 Change-Id: I41817d612b959709365bcabff9c8a15f2bfe4c60 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1330804 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Remove unnecessary use of dev_name()Terje Bergstrom2017-03-28
| | | | | | | | | | | | | | | Move the name field from struct gpu_ops up to struct gk20a. The field is not a function op, so it doesn't belong in gpu_ops. Replace all uses of dev_name() with use of g->name when possible. JIRA NVGPU-16 Change-Id: Ic6e99e39258cbf3bb7c806962cbbd7de5126688f Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1328534 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Use new kmem API functions (clk/*)Alex Waterman2017-03-26
| | | | | | | | | | | | | | | | | | | Use the new kmem API functions in clk/*. Also add a struct gk20a pointer to the following functions: nvgpu_clk_notification_queue_alloc() nvgpu_clk_notification_queue_free() Bug 1799159 Bug 1823380 Change-Id: I7eb67dc443c0bbe0d3f67dac7bf363da60e1051c Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1318316 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Add bus HALTerje Bergstrom2017-03-23
| | | | | | | | | | | Add bus HAL and move all bus related hardware sequencing to that file: BAR1 binding, timer access, and interrupt handling. Change-Id: Ibc5f5797dc338de10749b446a7bdbcae600fecb4 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1323353 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: fix arbiter teardown on PCIDavid Nieto2017-03-20
| | | | | | | | | | | | | | | | The driver is not properly tearing down the arbiter on the PCI driver unload. This change makes sure that the workqueues are drained before tearing down the driver bug 200277762 JIRA: EVLR-1023 Change-Id: If98fd00e27949ba1569dd26e2af02b75897231a7 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1320147 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Rename clk->get_rate to measure_freqTerje Bergstrom2017-03-16
| | | | | | | | | | | | | | get_rate is already used for call-back that queries the last set clock rate. This instance of get_rate actually measures the frequency so renaming it to measure_freq. At the same time modify to use hertz instead of megahertz. We use fractional megahertz already in GPU. Change-Id: I387473d6a6cbf3bb9b9e5a909677a1a725403c32 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1300111 Reviewed-by: Alex Waterman <alexw@nvidia.com>
* gpu: nvgpu: check return value of mutex_init in clk_arb.cDeepak Nibade2017-03-14
| | | | | | | | | | | | | | | - check return value of nvgpu_mutex_init in clk_arb.c - add corresponding nvgpu_mutex_destroy calls Jira NVGPU-13 Change-Id: I823888ec234ce5358187c449de8e6cabc5fc5503 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/1317133 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: Navneet Kumar <navneetk@nvidia.com>
* gpu: nvgpu: remove clock domain aliasesThomas Fleury2017-03-02
| | | | | | | | | | | | | | | | Remove MCLK and GPCCLK domain aliases, now that userspace has swithed to new enumerations. Jira DNVGPU-211 Change-Id: I2af2fd67dbed47088d7161ba0605e13dd7c674a5 Signed-off-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-on: http://git-master/r/1292609 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Richard Zhao <rizhao@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
* gpu: nvgpu: use common nvgpu mutex/spinlock APIsDeepak Nibade2017-02-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using Linux APIs for mutex and spinlocks directly, use new APIs defined in <nvgpu/lock.h> Replace Linux specific mutex/spinlock declaration, init, lock, unlock APIs with new APIs e.g struct mutex is replaced by struct nvgpu_mutex and mutex_lock() is replaced by nvgpu_mutex_acquire() And also include <nvgpu/lock.h> instead of including <linux/mutex.h> and <linux/spinlock.h> Add explicit nvgpu/lock.h includes to below files to fix complilation failures. gk20a/platform_gk20a.h include/nvgpu/allocator.h Jira NVGPU-13 Change-Id: I81a05d21ecdbd90c2076a9f0aefd0e40b215bd33 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/1293187 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: prepare MCLK/GPCLK enumeration changeThomas Fleury2017-01-31
| | | | | | | | | | | | | | | | | | GPC2CLK has been replaced with GPCCLK on user API. Remove related definition from kernel API. GPCLCK and MCLK are currently assigned EQU values in kernel API. We want to move to a simple enumeration as used in nvrm_gpu. During the transition, an alias value will be defined for each clock, and kernel will accept both. Jira DNVGPU-210 Jira DNVGPU-211 Change-Id: I944fe78be9f810279f7a69964be7cda9b9c8d40d Signed-off-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-on: http://git-master/r/1292593 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Free nvgpu_clk_dev in case of errorTerje Bergstrom2017-01-26
| | | | | | | | | | | | | | | | If nvgpu_clk_arb_install_fd() gets an error from nvgpu_clk_notification_queue_alloc(), it fails to free the nvgpu_clk_dev that it allocated earlier. Direct the error case to call an appropriate fail label. Coverity ID 1862040 Change-Id: I1d804d4f5261ec64831938f997f9efc3f2700b60 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1291683 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: fix failures in VF table updateDavid Nieto2017-01-18
| | | | | | | | | | | | | | | | | | | | The variable indicating the size of the buffer for GPC vf points was not reset before the query, thus sporadic failures could happen if the number of available VF points changed on an update Maximum number of points increased to 256. This is the maximum that can fit in the boardobj table bug 200269804 Change-Id: Icb4ae386135a9bb40d4345eb73c5584fecd79147 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1286028 Reviewed-on: http://git-master/r/1287589 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> Reviewed-by: Thomas Fleury <tfleury@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: CPU timestamps for alarmsThomas Fleury2017-01-06
| | | | | | | | | | | | | | | Use sched_clock() for alarm timestamps to return number of nanoseconds since the system was started. Jira DNVGPU-186 Change-Id: Ie16fe5442ea8a5213bf5401a3faedcce387b3d93 Reviewed-on: http://git-master/r/1259026 Signed-off-by: Thomas Fleury <tfleury@nvidia.com> (cherry picked from commit 383601c4d006734e13f0bfa386381573c87209da) Reviewed-on: http://git-master/r/1280888 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add support for alarms in arbiterDavid Nieto2017-01-06
| | | | | | | | | | | | | | | | | Add a queue system to collect alarm notifications and deliver them to user space Add interface for driver to set global alarms JIRA: DNVGPU-189 Change-Id: I24a340283c02d8ea95ad6ea148acdb37157ef69c Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1252475 (cherry picked from commit 5b79c7541066148ce0580d25daad54a8fa82f8be) Reviewed-on: http://git-master/r/1280887 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add read and ioctl for eventsThomas Fleury2017-01-06
| | | | | | | | | | | | | | | Add support for poll/read/ioctl for events in clock arbiter. Jira DNVGPU-186 Change-Id: Id95264fffae2b83a388ff8f186ebe7d723029b7f Reviewed-on: http://git-master/r/1253659 Signed-off-by: Thomas Fleury <tfleury@nvidia.com> (cherry picked from commit 8d652a7313722aab331f82f0841b490ca25cb51d) Reviewed-on: http://git-master/r/1280885 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add GPCCLK on ioctl APIThomas Fleury2017-01-05
| | | | | | | | | | | | | | | Internally we use GPC2CLK in the arbiter, but we should expose GPCCLK on kernel API and in user space. Added GPCCLK on the ioctl API. Arbiter uses GPC2CLK to make queries, then converts to GPCCLK. Jira DNVGPU-210 Change-Id: Id0b8134d0505c1f9bfd655a08e902bdcd03ebd96 Signed-off-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-on: http://git-master/r/1280316 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Free arb substructures only if arb allocatedTerje Bergstrom2017-01-04
| | | | | | | | | | | | | nvgpu_clk_arb_init_arbiter() allocates master structure arb, and sub-structures which is assigns as members of arb. At failure, there's a single error label, and it tries to free the members of arb without checking that arb was allocated. Change-Id: Ifac7552b05dad17036835eb3ee624eae351ccb7d Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1279226 GVS: Gerrit_Virtual_Submit Reviewed-by: Thomas Fleury <tfleury@nvidia.com>
* gpu: nvgpu: Fix memory leak in arb installTerje Bergstrom2017-01-04
| | | | | | | | | | | nvgpu_clk_arb_install_fd() leaks dev if it cannot create an fd, and it leaks both dev and fd if it fails to create a file. Change-Id: I65c03401dba44d88be543d3aec2fa3fcd2fb0dcc Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1279225 GVS: Gerrit_Virtual_Submit Reviewed-by: Thomas Fleury <tfleury@nvidia.com>
* gpu: nvgpu: MSCG supportMahantesh Kumbar2016-12-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | - update gp106 pg engine init/list/features HALs to support MS engine - Added defines & interface for lpwr tables read from vbios. - lpwr module which reads idx/gr/ms table from vbios to map rppg/mscg support with respective p-state - lpwr module public functions to control lpwr features enable/disable mscg/rppg & mclk-change request whenever change in mclk-change parameters - lpwr public functions to know rppg/mscg support for requested pstate, - added mutex t prevent PG transition while arbiter executes pstate transition - nvgpu_clk_arb_get_current_pstate() of clk arbiter to get current pstate JIRA DNVGPU-71 Change-Id: Ifcd640cc19ef630be1e2a9ba07ec84023d8202a0 Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com> Reviewed-on: http://git-master/r/1247553 (cherry picked from commit 8a441dea2410e1b5196ef24e56a7768b6980e46b) Reviewed-on: http://git-master/r/1270989 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: fix CLFC arbiter vf table updateDavid Nieto2016-12-27
| | | | | | | | | | | | | | | | | | | (1) Adding additional debug in case of VF update failure (2) The length of the tables must be re-initialized prior to requesting the vf table update JIRA: DNVGPU-193 Change-Id: Id5a369359bc5f52ee58da539bfc3ec1ec7887de1 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1252061 (cherry picked from commit dfb6fec02f8e3ff6a22bbea000347923b0306018) Reviewed-on: http://git-master/r/1274547 Reviewed-by: Automatic_Commit_Validation_User Tested-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: call set volt always during vf switchVijayakumar2016-12-27
| | | | | | | | | | | | | | | | | bug 1845211 clfc is reset during vf switch. it resets delta values stored in pmu structure. if voltage has not changed, delta calculation happens on top of corrected voltage causing volt to keep on increasing in cases where voltage does not change during a vf switch. Change-Id: I9d1a58b6b7652f22c3a7304162bb8ca6f7d1da6f Signed-off-by: Vijayakumar <vsubbu@nvidia.com> Reviewed-on: http://git-master/r/1266632 (cherry picked from commit 74e2e97d4d149d3eac65b5f65b358b977fba463e) Reviewed-on: http://git-master/r/1273911 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: actions before and after vf changeVijayakumar2016-12-27
| | | | | | | | | | | | | | | | | | | JIRA DNVGPU-175 1)Add functions to be called before and after vf change 2)Capture noise unaware vmin value and pass it as param to vf change functions 3)Before VF change disable CLFC and update noise unware vmin 4)After VF change is done enable CLFC Change-Id: I4bb59fbe96ec5a792e8930db3ab4a39ec74c9a71 Signed-off-by: Vijayakumar <vsubbu@nvidia.com> Reviewed-on: http://git-master/r/1248211 (cherry picked from commit cf07892204d7ce11a0d27ecbc1f5826fbabbde61) Reviewed-on: http://git-master/r/1270950 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User
* gpu: nvgpu: set p state floor for sys and xbar clkVijayakumar2016-12-27
| | | | | | | | | | | | | | | | | | | bug 200254784 If XBAR and SYS clocks for a given GPC clock point is lower than minimum value mentioned in P state set the floor to minimum value mentioned in p state. it was set to value based ratio of a GPC clk value in VF table which can give value higher than one mentioned in p state. Ignore ratio and just set to p state value Change-Id: I9f7cd1d5842d057aff6d8243a31ab503ce35a8ca Signed-off-by: Vijayakumar <vsubbu@nvidia.com> Reviewed-on: http://git-master/r/1257251 Reviewed-by: Automatic_Commit_Validation_User (cherry picked from commit 5798680286967ff999f674bedd4fc0411615f914) Reviewed-on: http://git-master/r/1270949 GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: p-state bound arbiterDavid Nieto2016-12-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modification of the ARBITER clocks to be P-State aware Up to now the arbiter just considered the whole range of the GPC and MCLK domains, which could end up on illegal combinations of MCLK, GPC2CLK, and set the SYSCLK and XBARCLK domains below their minimum VCO The following has been implemented: (1) Modified VF tables to add which PState are supported on each point. (2) Return and store the current PState on the arbiter state. (3) Modified logic to prevent illegal combinations of MCLK and GPC2CLK. (4) Modified logic to prevent setting VF points for XBAR and SYS domains below VCO limits. (5) Modified voltage calculation to account for increased values of XBAR and SYS on some VF points. (6) Modified arbiter clock target logic to prevent an application that has not requested a particular VF point to set target to default targets. (7) Remove unnecesary mutexes from critical path JIRA DNVGPU-182 JIRA DNVGPU-183 Change-Id: I3d1c30903278f848681b8da833a867835acc99bb Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1247937 (cherry picked from commit b8bcc07eb3b5b70ec1ee19ace237df99d6170138) Reviewed-on: http://git-master/r/1268063 Tested-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: prevent hang on failing arbiter initDavid Nieto2016-12-27
| | | | | | | | | | | | | | | | | | | | | The current code can lead to application hang when opening device on first time if the arbiter fails to set the clocks Also it solves a buffer overrun condition in case the requested frequency is above the maximum range of the VF curve bug 1835042 Change-Id: I385401ea27d5cc4bfa41b7ca2eb3a1db53138418 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1245911 Reviewed-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1268061 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: resolve signed/unsigned mismatchDavid Nieto2016-12-27
| | | | | | | | | | | JIRA DNVGPU-143 Change-Id: I0536aff4f994efc3dbd2db949068f8e1345ece9c Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1268107 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: make clock arbiter locklessDavid Nieto2016-12-27
| | | | | | | | | | | | | | | | | | | | | | Modification of the arbiter to remove all locking from the arbiter callback and move the callbacks out of the global queue Adding modification to call for updated values of vf table from arbiter init function and on vf table update JIRA: DNVGPU-170 Change-Id: I7a7d34c0590522901e06356c06fd8114ebf10f37 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1243212 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-on: http://git-master/r/1268009 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: gpu: read effective frequence from counterDavid Nieto2016-12-27
| | | | | | | | | | | | | | | | (1) modified counters debug code to export to the driver (2) modified arbiter to read from those functions (3) modified counter for higher accuracy on MHz range JIRA DNVGPU-164 Change-Id: I2bbf7c9be4dc59718d1d91c53028a39020b5aea5 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1239467 GVS: Gerrit_Virtual_Submit Reviewed-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1268008
* nvgpu: gpu: arbiter for vf switch managementDavid Nieto2016-12-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | JIRA DNVGPU-143 The arbiter is charged with selecting the proper frequencies when multiple applications submit simultaneously clock change requests On the current implementation, the arbiter guarantees that the selected frequency will be always higher or equal to the request, as long as the request is in range. The current code is not yet realtime friendly, as requests are not pre-allocated. Summary of changes: (1) pstate/vf switch no longer selects boot frequency (2) changed mclk code change to accept input freq (3) added arbiter (4) now a single session can submit concurrent requests the last request is the one that applies for that session (5) modified locking mechanism to reduce lock contention (6) Added callback to notify the arbiter that the VF table has changed and is no longer valid (PMU/Thermals must call this when VF table is invalid) (7) changed internal API to work with MHz (8) added debugfs for stats Change-Id: I6a7b05c9447761e8536f84ef86b5ab0793164d63 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1239461 Reviewed-by: Thomas Fleury <tfleury@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1267120 Reviewed-by: Automatic_Commit_Validation_User
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