summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/nvgpu/os/linux/module.c
Commit message (Collapse)AuthorAge
* gpu: nvgpu: change system suspend's implementationDebarshi Dutta2020-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, for platforms with canRailgate device characteristics disabled, suspend can block as deterministic channels hold busy references. This patch makes the change to first hold off any new jobs for deterministic channels and then reverts back the busy references taken by those channels. Following this, suspend also waits for the device to get idle by waiting (with timeout) for the nvgpu's internal usage counter to be come zero. This ensures there are no further jobs in progress and allows the system to go into a suspend state. Bug 200598228 Bug 2930266 Change-Id: Id02b4d41a9c2dd64303b2e2449dbed48c12aea4c Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2328489 Reviewed-by: automaticguardword <automaticguardword@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Shashank Singh <shashsingh@nvidia.com> Reviewed-by: Sami Kiminki <skiminki@nvidia.com> Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: Bibek Basu <bbasu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: handle ioctl l2_fb_ops betterddutta2020-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Background: There is a race that occurs when l2_fb_ops ioctl is invoked. The race occurs as part of the flush() call while a gk20_idle() is in progress. This patch handles the race by making changes in the l2_fb_ops ioctl itself. For cases where pm_runtime is disabled or railgate is disabled, we allow this ioctl call to always go ahead as power is assumed to be always on. For the other case, we first check the status of g->power_on. In the driver, g->power_on is set to true, once unrailgate is completed and is set to false just before calling railgate. For linux, the driver invokes gk20a_idle() but there is a delay after which the call to the rpm_suspend()'s callback gets triggered. This leads to a scenario where we cannot efficiently rely on the runtime_pm's APIs to allow us to block an imminent suspend or exit if the suspend is currently in progress. Previous attempts at solving this has lead to ineffective solutions and make it much complicated to maintain the code. With regards to the above, this patch attempts to simplify the way this can be solved. The patch calls gk20a_busy() when g->power_on = true. This prevents the race with gk20a_idle(). Based on the rpm_resume and rpm_suspend's upstream code, resume is prioritized over a suspend unless a suspend is already in progress i.e. the delay period has been served and the suspend invokes the callback. There is a very small window for this to happen and the ioctl can then power_up the device as evident from the gk20a_busy's calls. A new function gk20a_check_poweron() is added. This function protects the access to g->power_on via a mutex. By preventing a read from happening simulatenously as a write on g->power_on, the likelihood of an runtime_suspend triggering before a runtime_resume is further reduced. Bug 200507468 Change-Id: I5c02dfa8ea855732e59b759d167152cf45a1131f Signed-off-by:Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2299545 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: fix gk20a_busy_noresume and gk20a_idle_nosuspendDebarshi Dutta2019-11-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gk20a_idle can still race with gk20a_busy_noresume as the following pm_runtime's functions can run concurrently. i.e. pm_runtime_suspend and pm_runtime_get_noresume. pm_runtime_get_noresume simply increments the refcount without first acquiring the pm_runtime's power_lock. This can be resolved by the use of pm_runtime_get_if_in_use which acquires a the power lock of PM runtime. This prevents a potential use of register after power_off in the l2_ops ioctl path. We still call pm_runtime_get_noresume even if pm_runtime_get_if_in_use returns <= 0. This helps in the following ways. 1) The signature of the function gk20a_busy_noresume remains same w.r.t QNX code 2) Any calls to gk20a_busy_noresume() in the driver is followed by a check to g->power_on. When pm_runtime_get_if_in_use() returns <=0, g->power_on is false and would immediately call gk20a_suspend_noidle() thus keeping the original 'intent' of the gk20a_busy_noresume intact. Bug 200507468 Change-Id: Id46bf2124047bb0e9a299fda57441e425195468f Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2180787 Reviewed-by: Bibek Basu <bbasu@nvidia.com> Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* Revert "gpu: nvgpu: Fix the race between runtime PM and L2 flush"Debarshi Dutta2019-09-05
| | | | | | | | | | | | | | | This patch results in a flaw that doesn't clear the GPU cache. This reverts commit 47f6bc0c2e85d0a8ff943b88c81108ca1bfc588e. Bug 2687410 Change-Id: If78bd7ca29eb5621d4369cbddf21320e2a77a41a Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2186886 GVS: Gerrit_Virtual_Submit Reviewed-by: Bibek Basu <bbasu@nvidia.com> Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: provide usermode region via mmapKonsta Holtta2019-08-15
| | | | | | | | | | | | | | | | | | | | | | | Add a mmap callback on the control device node for mapping the usermode register region to userspace. Each such mapping is removed when the GPU railgates, and brought back again on unrailgate. The mapping offset must be 0 and its size must be 4 KB. Bug 200145225 Bug 200541476 Change-Id: Ie8d3758da745b958376292691d7d1d02a24e7815 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1795819 Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> (cherry picked from commit f33935f426c46b70b7aee33a1e52d5fdae5ca376 in dev-main) Reviewed-on: https://git-master.nvidia.com/r/2170035 GVS: Gerrit_Virtual_Submit Reviewed-by: Bibek Basu <bbasu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: store bus addr of gpu regsKonsta Holtta2019-08-15
| | | | | | | | | | | | | | | | | | | | | Usermode submit needs to access the usermode region of registers from userspace. Store the start address of register resource in struct nvgpu_os_linux to be used in remap to userspace. Bug 200145225 Bug 200541476 Change-Id: I3796b6bf67942af0cc16c86accb82a013032bfc8 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1811838 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> (cherry picked from commit 38c11db264f776fa495a3ba74caadf4262062b78 in dev-main) Reviewed-on: https://git-master.nvidia.com/r/2169921 GVS: Gerrit_Virtual_Submit Reviewed-by: Bibek Basu <bbasu@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Use TPC_PG_MASK to powergate the TPCDivya Singhatwaria2019-08-02
| | | | | | | | | | | | | | | | | | | | | | | - In GV11B, read fuse_status_opt_tpc_gpc register to read which TPCs are floorswept. - The driver will also read sysfs node: tpc_pg_mask - Based on these two values "can_tpc_powergate" will be set to true or false and mask will be used to write to fuse_ctrl_opt_tpc_gpc register to powergate the TPC. - can_tpc_powergate = true indicates that the mask value sent from userspace is valid and can be used to power gate the desired TPC - can_tpc_powergate = false indicates that the mask value sent from userspace is not valid and cannot be used to power gate the desired TPC. Bug 200532639 Change-Id: Ib0806e4c96305a13b3574e8063ad8e16770aa7cd Signed-off-by: Divya Singhatwaria <dsinghatwari@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2159219 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Fix the race between runtime PM and L2 flushDebarshi Dutta2019-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | | gk20a_mm_l2_flush flushes the L2 cache when "struct gk20a->power_on" is true. But it doesn't acquire power lock when doing that, which creates a race that runtime PM might suspend the GPU in the middle of L2 flush. The FB flush looks having the same issue with L2 flushing. This patch fixes that by calling pm_runtime_get_if_in_use at the beginning of the ioctl. This API from PM does a compare and add to the usage count. If the device was not in use, it simply returns without incrementing the usage count as its unnecessary to wake up the GPU(using e.g. a call to gk20a_busy()) as the caches are flushed when the device would be resumed anyways. Bug 2643951 Change-Id: I2417f7ca3223c722dcb4d9057d32a7e065b9e574 Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2151532 GVS: Gerrit_Virtual_Submit Reviewed-by: Mark Zhang <markz@nvidia.com> Reviewed-by: Bibek Basu <bbasu@nvidia.com> Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add DT support for TPC_PG_POWERGATEDebarshi Dutta2019-05-15
| | | | | | | | | | | | | | | | | | Added support for TPC_PG_POWERGATE during probe for nvgpu via DT. A new DT binding GV11B_FUSE_OPT_TPC_DISABLE is supported by nvgpu driver that checks for valid masks and updates the global tpc_pg_mask flag. Bug 200518434 Change-Id: Ia65ae518b48e36d28de5e9375bc994232f6a9438 Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2117783 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Deepak Goyal <dgoyal@nvidia.com> Reviewed-by: Bibek Basu <bbasu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add reboot handlerKary Jin2018-10-29
| | | | | | | | | | | | | | | | | | | Add a reboot handler to make sure that nvgpu does not try to busy the GPU if the system is going down. If the system is going down then any number of subsystems nvgpu depends on may already have been deinitialized. Bug 200333709 Bug 200454316 Change-Id: I2ceaf7ca4fb88643310874b5b26937ef44c6e3dd Signed-off-by: Kary Jin <karyj@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1927018 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Vinayak Pane <vpane@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: ACR code refactorMahantesh Kumbar2018-09-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -Created struct nvgpu_acr to hold acr module related member within single struct which are currently spread across multiple structs like nvgpu_pmu, pmu_ops & gk20a. -Created struct hs_flcn_bl struct to hold ACR HS bootloader specific members -Created struct hs_acr to hold ACR ucode specific members like bootloader data using struct hs_flcn_bl, acr type & falcon info on which ACR ucode need to run. -Created acr ops under struct nvgpu_acr to perform ACR specific operation, currently ACR ops were part PMU which caused to have always dependence on PMU even though ACR was not executing on PMU. -Added acr_remove_support ops which will be called as part of gk20a_remove_support() method, earlier acr cleanup was part of pmu remove_support method. -Created define for ACR types, -Ops acr_sw_init() function helps to set ACR properties statically for chip currently in execution & assign ops to point to needed functions as per chip. -Ops acr_sw_init execute at early as nvgpu_init_mm_support calls acr function to alloc blob space. -Created ops to fill bootloader descriptor & to patch WPR info to ACR uocde based on interfaces used to bootstrap ACR ucode. -Created function gm20b_bootstrap_hs_acr() function which is now common HAL for all chips to bootstrap ACR, earlier had 3 different function for gm20b/gp10b, gv11b & for all dgpu based on interface needed. -Removed duplicate code for falcon engine wherever common falcon code can be used. -Removed ACR code dependent on PMU & made changes to use from nvgpu_acr. JIRA NVGPU-1148 Change-Id: I39951d2fc9a0bb7ee6057e0fa06da78045d47590 Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1813231 GVS: Gerrit_Virtual_Submit Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: remove circular dependency between hal.c and gk20a/ddutta2018-09-21
| | | | | | | | | | | | | | | | | gk20a/hal.c depends on HAL init functions in all chips. But all chips also depend on gk20a. That creates a circular dependency. In order to solve the above, move gpu_init_hal and gk20a_detect_chip to common/init/hal_init.c. These methods are declared in include/nvgpu/hal_init.h. Also, the above methods are renamed to nvgpu_init_hal and nvgpu_detect_chip respectively. Jira NVGPU-613 Change-Id: Ib0df90287d4491571e4751475739b75fabd1041b Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1827576 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: use single lock for gpu power on-offNitin Kumbhar2018-09-18
| | | | | | | | | | | | | | | | | | | | | | | | | Using two separate locks (poweron_lock and poweroff_lock) allows concurrent gpu power-on and power-off. This shall not happen as driver won't be able to maintain correct gpu state. Use a single power_lock to manage gpu power state. This lock will be used to manage gpu power state from multiple triggers like gpu idle, gpu gc-off, etc. JIRA NVGPU-1100 Change-Id: Ia9b4aeda024a5844ae9f182d453cd6341876680a Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1827812 Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> Reviewed-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: railgate returns early if no platform implementationRichard Zhao2018-09-13
| | | | | | | | | | | | | | | | | | | | | If platform didn't set railgate/unrailgate callbacks, it means it does not support railgate. It avoids vgpu calling tegra_fuse_clock_disable/enable. Bug 200436689 Jira EVLR-2983 Change-Id: I759dc23145429a59f40cec6e9c1de9536dcf43c4 Signed-off-by: Richard Zhao <rizhao@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1821663 Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: move fecs trace debugfs to linuxNitin Kumbhar2018-09-09
| | | | | | | | | | | | | | | | | | Add fecs trace debugfs initialization as an os op. The debugfs nodes are set up for gpu versions which call gk20a_fecs_trace_init(). JIRA NVGPU-602 Change-Id: I606ec31acbf04f633500be4c342db32f3f537794 Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1812449 Reviewed-by: Deepak Nibade <dnibade@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: move channel header to commonKonsta Holtta2018-09-05
| | | | | | | | | | | | | channel_gk20a is clear from chip specifics and from most dependencies, so move it under the common directory. Jira NVGPU-967 Change-Id: I41f2160b96d4ec84064288ecc22bb360e82352df Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1810578 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: move pmgr debugfs to linuxNitin Kumbhar2018-09-05
| | | | | | | | | | | | | | Move debugfs related part of pmgr to linux files. JIRA NVGPU-603 Change-Id: I478491e06e2e7cdbe3826166aafd8491d1e6c1e7 Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1801086 GVS: Gerrit_Virtual_Submit Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: move therm debugfs to linuxNitin Kumbhar2018-09-05
| | | | | | | | | | | | | | | | | | | Move debugfs related code of therm from common driver to linux specific part of the driver. gp106_therm_debugfs_init() is updated to use nvgpu_os_linux_ops. This also affects gv100 as gp106_therm_debugfs_init is used for gv100 as well. JIRA NVGPU-603 Change-Id: Ia293d14599bc0c91fd1e917b5a430bd8f3d96e56 Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1797906 GVS: Gerrit_Virtual_Submit Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: move gp106 clk debugfs to linuxNitin Kumbhar2018-09-05
| | | | | | | | | | | | | | | | | | | | | | | | | Move linux dependencies and CONFIG_DEBUG_FS to linux specific code from common driver for gp106 clk debugfs. There is no code change in functions moved from gp106/clk_gp106.c. It uses nvgpu_os_linux_ops to add gp106 specific clk debugfs ops. The linux specific part of nvgpu driver uses this op to initialize gp106 clk debugfs. As gv100 also uses gp106 clk debugfs ops, set up os ops for gv100. JIRA NVGPU-603 Change-Id: Ib55ef051b13366e5907e1d05376bb18bf42c8653 Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1797904 Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> Reviewed-by: Deepak Nibade <dnibade@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: protect clk_arb init with mutex.Debarshi Dutta2018-09-04
| | | | | | | | | | | | | | | | | | | g->clk_arb is currently initialized as a part of gk20a_finalize_poweron(). Any subsequent call to gk20a_finalize_poweron reinitializes the clk_arb and leading to memory leaks. This is resolved by protecting the g->clk_arb initialization with a mutex clk_arb_enable_lock in struct gk20a. We skip initializing the g->clk_arb if its not NULL. Bug 2061372 Change-Id: I59158e0a5e4c827fdbd6d9ea2d04c78d0986347a Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1811650 Reviewed-by: Deepak Nibade <dnibade@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: declare the ID table as a device tablePreetha Chandru R2018-09-03
| | | | | | | | | | | | | | Declare the ID table as a device table to enable autoloading of the module as the device tree is instantiated. Change-Id: I4f29259a0a9af6b72be99ed27789ee4d5d7a1aa2 Signed-off-by: Preetha Chandru R <pchandru@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1809174 Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: linux: move os ops to a common fileNitin Kumbhar2018-08-29
| | | | | | | | | | | | | | | Currently only cde uses nvgpu_os_linux_ops to set up linux specific ops. Move nvgpu_os_linux_ops of a gpu to a common file so that those can be reused for other os ops of that gpu. JIRA NVGPU-603 Change-Id: Icf1ff275d3832229137f730fe8183b8015e82673 Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1797902 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add missing timer includesKonsta Holtta2018-08-24
| | | | | | | | | | | | | Many files used declarations from timers.h implicitly via another header file(s). Add several #includes explicitly to their users. Jira NVGPU-967 Change-Id: I88b515061db87c69bd85e3655b74d0271a80d9bf Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1804611 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Use NVLINK config instead of has_physical_modeAlex Waterman2018-08-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This flag - has_physical_mode - doesn't seem to do much other than force the PTE/PDE and inst block addresses to be physical instead of potentially IOMMUed. There is a reason to do this on volta (nvlink not being IOMMU'able being the primary reason) but this flag is too general it seems. The flag was being enabled on all native platforms. The problem is that some page tables (the maxwell small page directories) could be larger than 4KB which meant that the allocation used for them could be potentially discontiguous. Discontiguous page directories obviously is incorrect. This patch deletes the has_physical_mode flag and instead replaces the places where it's checked with a check for nvlink being enabled. Since we _do_ want to program phyiscal PDEs and PTEs for NVLINK devices (regardless of IOMMU status they always access memory by physical address) we need a check for NVLINK state. Bug 200414723 Change-Id: I09ad86b12d8aabcf9648a22503f4747fd63514dd Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1792163 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: remove clk_arb.h to gk20a.h circular dependencyDebarshi Dutta2018-08-08
| | | | | | | | | | | | | | | | | clk_arb.h and gk20a.h has circular dependencies to each other. This is removed by forward declaring struct gk20a in clk_arb.h and removing the header gk20a.h from clk_arb.h and similarly forward declaring struct nvgpu_clk_arb in gk20a.h and removing the header clk_arb.h from gk20a.h alongwith putting headers in every execution unit which calls clk_arb.h related methods. JIRA NVGPU-597 Change-Id: I7cedca17206c148b21d93e5d7f0d88c2f98b979a Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1790915 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add pm_rumtime fixesNitin Kumbhar2018-07-12
| | | | | | | | | | | | | | | | | | | | | | | Runtime PM is enabled only for iGPU and not for dGPU. For dGPU, the .probe() of driver pm_runtime_disable()s, if rail-gating is not enabled. With nvgpu kernel module load/unload, .probe() is called multiple times for same struct device *. This results in an overflow of disable_depth (3 bit refcount) and enables runtime PM on 8th iteration and calls RTPM routines even if it's disabled. To effectively manage pm_runtime_disable(), move it from common nvgpu_remove() to iGPU/dGPU specific routines. Also, add restore pm_runtime state of device on driver .remove(). Bug 1987855 Change-Id: I781278da546ef9c9ef7d7da7dbea0757df32716f Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1770804 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: skip suspend if gpu already removedNitin Kumbhar2018-07-12
| | | | | | | | | | | | | | | | | | | | | | | | On nvgpu module unload, platform_driver_unregister() detaches driver from device (driver_detach()). As part of this, __device_release_driver() results a race between driver's .runtime_resume(), .remove() and .runtime_suspend(). As nvgpu's .remove() is handling all steps of cleaning up driver state and shutting down gpu, .runtime_suspend() shall have no work. So skip .runtime_suspend() is gk20a *g has already been processed. Bug 1987855 Change-Id: I024ac63d321689ea04c64b1ffc125da943d482f9 Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1770803 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: use devm variants to ioremapNitin Kumbhar2018-07-06
| | | | | | | | | | | | | | | | | | | | | | While removing nvgpu driver, devm mapped reg mappings are released on driver_unregister. For iGPU, these regs are explicitly unmapped with iounmap(). This results in "Trying to vfree() nonexistent vm area" warnings on driver removal. Address this by using devm* variants to map all IO regions of both iGPU and dGPU and let the driver unregister release these mappings. Also, lock out GPU regs in driver removal path. Bug 1987855 Change-Id: I0388daf90bea3eaf8752255059cfd3ceabf66e7d Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1730539 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: move can_railgate to enabled.hKonsta Holtta2018-07-04
| | | | | | | | | | | | | The g->can_railgate flag is a global constant-ish property like the rest of the flags behind nvgpu_is_enabled() API, so move it there. Bug 200327089 Change-Id: Id1f2f16ea1975a03fb56f10c2f3c8c705574e341 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1764266 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: suspend/resume support for vGPUDeepak Bhosale2018-06-21
| | | | | | | | | | | | | | | | | | | | | | | - Added suspend/resume power management callbacks for vGPU - Added suspend/resume commands for communication between vGPU and RM server - Added suspend/resume message parameters for IVC messages between vGPU and RM server JIRA EVLR-2305 JIRA EVLR-2306 Change-Id: I83a314b4e125a53117d16c5ea72dbc5d8ef96ef7 Signed-off-by: Deepak Bhosale <dbhosale@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1735153 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Richard Zhao <rizhao@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Nirav Patel <nipatel@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Move Linux files away from commonTerje Bergstrom2018-06-15
Move all Linux source code files to drivers/gpu/nvgpu/os/linux from drivers/gpu/nvgpu/common/linux. This changes the meaning of common to be OS independent. JIRA NVGPU-598 JIRA NVGPU-601 Change-Id: Ib7f2a43d3688bb0d0b7dcc48469a6783fd988ce9 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1747714 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-07-07 17:06:16 -0400