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path: root/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
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* gpu: nvgpu: Remove gk20a_dbg* functionsTerje Bergstrom2018-05-09
| | | | | | | | | | | | | | | Switch all logging to nvgpu_log*(). gk20a_dbg* macros are intentionally left there because of use from other repositories. Because the new functions do not work without a pointer to struct gk20a, and piping it just for logging is excessive, some log messages are deleted. Change-Id: I00e22e75fe4596a330bb0282ab4774b3639ee31e Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1704148 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add worker for clk arb work handlingSourab Gupta2018-05-07
| | | | | | | | | | | | | | | | | | | | | | | | Implement a worker thread to replace the workqueue based handling for clk arbiter update callbacks. The work items scheduled with the thread are of two types, update_vf_table and arb_update. Previously, there were two workqueues for handling these two work struct's separately. Now the single worker thread would process these two events. If a work item of a particular type is scheduled to be run on the worker, another instance of same type won't be scheduled, which mirrors the linux workqueue behavior. This also removes dependency on linux workqueues/work struct and makes code portable to be used by QNX also. Jira VQRM-3741 Change-Id: Ic27ce718c62c7d7c3f8820fbd1db386a159e28f2 Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1706032 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: fix cond_wait return value in channel poll workerSourab Gupta2018-05-02
| | | | | | | | | | | | | | | | | | | | | | The return value from NVGPU_COND_WAIT_INTERRUPTIBLE in channel poll worker is wrongly compared with 0 and the boolean result is assigned to ret value used subsequently. Instead, the direct return value from NVGPU_COND_WAIT_INTERRUPTIBLE should be used. This bug seems remnant of the following patch which moved the handling from 'wait_event_timeout' to 'NVGPU_COND_WAIT'. commit 301965fb77b3dc97445957712b82ce430eaa17e3 gpu: nvgpu: Use nvgpu_cond in channel worker Change-Id: Id48e197756a6855b35a9ee0dc26d014b62ed3860 Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1705976 Reviewed-by: Konsta Holtta <kholtta@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: sync_framework cleanupsDebarshi Dutta2018-04-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch deals with cleanups meant to make things simpler for the upcoming os abstraction patches for the sync framework. This patch causes some substantial changes which are listed out as follows. 1) sync_timeline is moved out of gk20a_fence into struct nvgpu_channel_linux. New function pointers are created to facilitate os independent methods for enabling/disabling timeline and are now named as os_fence_framework. These function pointers are located in the struct os_channel under struct gk20a. 2) construction of the channel_sync require nvgpu_finalize_poweron_linux() to be invoked before invocations to nvgpu_init_mm_ce_context(). Hence, these methods are now moved away from gk20a_finalize_poweron() and invoked after nvgpu_finalize_poweron_linux(). 3) sync_fence creation is now delinked from fence construction and move to the channel_sync_gk20a's channel_incr methods. These sync_fences are mainly associated with post_fences. 4) In case userspace requires the sync_fences to be constructed, we try to obtain an fd before the gk20a_channel_submit_gpfifo() instead of trying to do that later. This is used to avoid potential after effects of duplicate work submission due to failure to obtain an unused fd. JIRA NVGPU-66 Change-Id: I42a3e4e2e692a113b1b36d2b48ab107ae4444dfa Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1678400 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: pass pid/tid from os specific code to common codeRichard Zhao2018-04-16
| | | | | | | | | | | | | | | | | | linux driver runs in user's process but qnx driver has dedicate driver process, so they have different way to get user pid. nvgpu common code expect calls from os specific code pass pid/tid. ce/cde open channel for internal use, we use driver pid. Jira VQRM-3534 Change-Id: I892372ac5f1dc4d25f9928d16992bcc659d12a56 Signed-off-by: Richard Zhao <rizhao@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1694145 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: vgpu: fix build errors on qnxRichard Zhao2018-04-10
| | | | | | | | | | | | | | | | | | - Declare global functions before reaching the implementation. - avoid using current (current process). - assign ch->pid/tgid before using them. Jira VFND-4870 Change-Id: I688a1b89ef4d5dcf046929eab11d7e523caba0a5 Signed-off-by: Richard Zhao <rizhao@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1687142 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: add usermode submission interface HALSourab Gupta2018-04-05
| | | | | | | | | | | | | | | | | | | | The patch adds the HAL interfaces for handling the usermode submission, particularly allocating channel specific usermode userd. These interfaces are currently implemented only on QNX, and are created accordingly. As and when linux adds the usermode submission support, we can revisit them if any further changes are needed. Change-Id: I790e0ebdfaedcdc5f6bb624652b1af4549b7b062 Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1683392 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@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: pass alloc_gpfifo args to gk20a_channel_alloc_gpfifoSourab Gupta2018-04-05
| | | | | | | | | | | | | | | | The patch defines 'struct nvgpu_gpfifo_args' to be filled by alloc_gpfifo(_ex) ioctls and passed to the gk20a_channel_alloc_gpfifo function. This is required as a prep towards having the usermode submission support in the core channel core. Change-Id: I72acc00cc5558dd3623604da7d716bf849f0152c Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1683391 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: channel_gk20a.c cleanup for POSIXAlex Waterman2018-03-30
| | | | | | | | | | | | | | Remove a variable which is assigned to but never used. Add proper include (<nvgpu/log2.h>) for ilog2(). JIRA NVGPU-525 Change-Id: I42f3fddad9c294dc64343082e1dbd44b19120089 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1673816 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add gops.fifo.ch_abort_clean_upRichard Zhao2018-03-29
| | | | | | | | | | | | | | Channel abort clean up is only needed by native and vgpu driver but not RM server. RM server expects guest will clean up itself. RM server should not set the callback. Jira VQRM-3058 Change-Id: I11b49b6f2d51c871e31de16955d487dca82609cb Signed-off-by: Richard Zhao <rizhao@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1679705 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: make fifo/ch functions called by RM Server globalSourab Gupta2018-03-29
| | | | | | | | | | | | | | | | | | The patch declares globally few channel/fifo HAL functions required for QNX code compilation (as they are being referred elsewhere in QNX code). This is required as a part of bringing in the nvgpu Channel/FIFO HAL into QNX. Jira VQRM-3058 Change-Id: Ia176535b64de981d2f7ddb20f62015a0da74fd2a Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1662411 GVS: Gerrit_Virtual_Submit Tested-by: Richard Zhao <rizhao@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: simplify job semaphore release in abortKonsta Holtta2018-03-28
| | | | | | | | | | | | | | | | | | | Instead of looping all jobs and releasing their semaphores separately, do just one semaphore release. All the jobs are using the same sema index, and the final, maximum value of it is known. Move also this resetting into ch->sync->set_min_eq_max() to be consistent with syncpoints. Change-Id: I03601aae67db0a65750c8df6b43387c042d383bd Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1680362 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@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: delete semaphore release supportKonsta Holtta2018-03-27
| | | | | | | | | | | | | | | | | | | | | | | | Semaphores don't need to be released from CPU anymore, so clarify the code by deleting nvgpu_semaphore_release() and refactoring __nvgpu_semaphore_release() to nvgpu_semaphore_reset() that only "fast-forwards" the semaphore to a later value. While doing this, the meaning of nvgpu_semaphore_incr() changes, so rename it to nvgpu_semaphore_prepare(). Now it's only used to prepare an nvgpu_semaphore for a value that the HW will increment the sema to. Also change the BUG_ON that guards sema double-inits into just WARN_ON. Change-Id: I6f6df368ec5436cc97a229697742b6a4115dca51 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1680361 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Alex Waterman <alexw@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: set safe state for user managed syncpointsDeepak Nibade2018-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | MAX/threshold value of user managed syncpoint is not tracked by nvgpu So if channel is reset by nvgpu there could be waiters still waiting on some user syncpoint fence Fix this by setting a large safe value to user managed syncpoint when aborting the channel and when closing the channel We right now increment the current value by 0x10000 which should be sufficient to release any pending waiter Bug 200326065 Jira NVGPU-179 Change-Id: Ie6432369bb4c21bd922c14b8d5a74c1477116f0b Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1678768 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Konsta Holtta <kholtta@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: delete unused job->pre_fenceKonsta Holtta2018-03-19
| | | | | | | | | | | | | | | | | | | The pre_fence member in channel_gk20a_job is no longer used for anything. Delete it. Only the post fence needs to be tracked. Jira NVGPU-527 Jira NVGPU-528 Bug 200390539 Change-Id: Ia1a556728dabf9a8e305ed76020ac1aa0b4d6b88 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1676735 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Deepak Nibade <dnibade@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: decouple sema and hw semaKonsta Holtta2018-03-13
| | | | | | | | | | | | | | | | | | | | | | | | struct nvgpu_semaphore represents (mainly) a threshold value that a sema at some index will get and struct nvgpu_semaphore_int (aka "hw_sema") represents the allocation (and write access) of a semaphore index and the next value that the sema at that index can have. The threshold object doesn't need a pointer to the sema allocation that is not even guaranteed to exist for the whole threshold lifetime, so replace the pointer by the position of the sema in the sema pool. This requires some modifications to pass a hw sema around explicitly because it now represents write access more explicitly. Delete also the index field of semaphore_int because it can be directly derived from the offset in the sema location and is thus unnecessary. Jira NVGPU-512 Change-Id: I40be523fd68327e2f9928f10de4f771fe24d49ee Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1658102 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: support per-channel wdt timeoutsKonsta Holtta2018-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the padding in nvgpu_channel_wdt_args with a timeout value in milliseconds, and add NVGPU_IOCTL_CHANNEL_WDT_FLAG_SET_TIMEOUT to signify the existence of this new field. When the new flag is included in the value of wdt_status, the field is used to set a per-channel timeout to override the per-GPU default. Add NVGPU_IOCTL_CHANNEL_WDT_FLAG_DISABLE_DUMP to disable the long debug dump when a timed out channel gets recovered by the watchdog. Printing the dump to serial console takes easily several seconds. (Note that there is NVGPU_TIMEOUT_FLAG_DISABLE_DUMP about ctxsw timeout separately for NVGPU_IOCTL_CHANNEL_SET_TIMEOUT_EX as well.) The behaviour of NVGPU_IOCTL_CHANNEL_WDT is changed so that either NVGPU_IOCTL_CHANNEL_ENABLE_WDT or NVGPU_IOCTL_CHANNEL_DISABLE_WDT has to be set. The old behaviour was that other values were silently ignored. The usage of the global default debugfs-controlled ch_wdt_timeout_ms is changed so that its value takes effect only for newly opened channels instead of in realtime. Also, zero value no longer means that the watchdog is disabled; there is a separate flag for that after all. gk20a_fifo_recover_tsg used to ignore the value of "verbose" when no engines were found. Correct this. Bug 1982826 Bug 1985845 Jira NVGPU-73 Change-Id: Iea6213a646a66cb7c631ed7d7c91d8c2ba8a92a4 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1510898 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add hal op to handle post event idAparna Das2018-03-06
| | | | | | | | | | | | | | The vserver variant for gr post event id needs different functionality to send interrupt to VM. Add HAL operation to allow overriding vserver usecase. Jira VQRM-2982 Change-Id: I915d089ef751023968c1e8ab181c21afeec997a5 Signed-off-by: Aparna Das <aparnad@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1658382 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: allocate separate client managed syncpoint for UserDeepak Nibade2018-03-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We right now allocate a nvgpu managed syncpoint in c->sync and share that with user space But to avoid conflicts between user space and kernel space increments allocate a separate "client managed" syncpoint for User space in c->user_sync Add new API nvgpu_nvhost_get_syncpt_client_managed() to request a client managed syncpoint from nvhost. Note that nvhost/nvgpu do not keep track of MAX/threshold value of this syncpoint Update gk20a_channel_syncpt_create() to receive a flag to indicate whether a User space syncpoint is required or not Unset NVGPU_SUPPORT_USER_SYNCPOINT for gp10b since we don't want to allocate double syncpoints per channel on that platform For gv11b, once we move to use user space submits, support for c->sync will be dropped so we keep using only one syncpoint per channel Bug 200326065 Jira NVGPU-179 Change-Id: I78d94de4276db1c897ea2a4fe4c2db8b2a179722 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1665828 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@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: use nvgpu_info in refcount trackingKonsta Holtta2018-02-26
| | | | | | | | | | | | | | | | | | | | | | | Use the nvgpu_info log facility instead of Linux-specific dev_info in gk20a_channel_dump_ref_actions. Also fix format types. dev_info isn't defined anymore in this file and our version is preferred anyway. Refcount tracking isn't compiled in by default, so this has went unnoticed. Jira NVGPU-22 Change-Id: If93b98c9a54d3b0deaf344a355594cb73712399c Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1663032 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: Seema Khowala <seemaj@nvidia.com> Reviewed-by: Alex Waterman <alexw@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: make .tsg_unbind_channel one layer lowerRichard Zhao2018-01-31
| | | | | | | | | | | | | | | | | | | | | | | | | The message to tell RM server to unbind channel has to be sent after client unbinds the channel and before client calls tsg release. The channel has to belong to a tsg on RM server before client submit a runlist to remove the channel. Or there's a bare channel problem. By moving .tsg_unbind_channl one layer lower, gk20a_tsg_unbind_channel() will be common functions for all chip, and it'll call tsg release after call .tsg_unbind_channel. So vgpu won't need to worry about tsg was released before sending msg to RM server. Bug 200382695 Bug 200382785 Change-Id: I32acc122f3f9d5d0628049ccf673225f9e90c87a Signed-off-by: Richard Zhao <rizhao@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1645383 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Konsta Holtta <kholtta@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: Fold T19x code back to main code pathsTerje Bergstrom2018-01-23
| | | | | | | | | | | | | Lots of code paths were split to T19x specific code paths and structs due to split repository. Now that repositories are merged, fold all of them back to main code paths and structs and remove the T19x specific Kconfig flag. Change-Id: Id0d17a5f0610fc0b49f51ab6664e716dc8b222b6 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1640606 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: note railgate_allowed in do_idleKonsta Holtta2018-01-22
| | | | | | | | | | | | | | | | | | | | | | | | The idling and unidling of deterministic channels in the do_idle/do_unidle path assume that each deterministic channel holds a power reference. This is no longer the case if railgating has been allowed for a channel via the deterministic options ioctl which also causes the channel to drop the power ref that it holds otherwise during its lifetime. All this is happening inside the deterministic_busy rwsem, which also guards the ioctl changing those deterministic option states. Bug 200327089 Change-Id: I9ce312bbaa459b3cf4a7541fa369186b78c3afdc Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1642310 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Alex Waterman <alexw@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: Make graphics context property of TSGTerje Bergstrom2018-01-17
| | | | | | | | | | | | | | | | | | | | Move graphics context ownership to TSG instead of channel. Combine channel_ctx_gk20a and gr_ctx_desc to one structure, because the split between them was arbitrary. Move context header to be property of channel. Bug 1842197 Change-Id: I410e3262f80b318d8528bcbec270b63a2d8d2ff9 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1639532 Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com> Tested-by: Seshendra Gadagottu <sgadagottu@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: correct function arguments to fix QNX compilationSourab Gupta2018-01-09
| | | | | | | | | | | | | | | The patch changes the function argument from 'int' to 'unsigned int' to fix the QNX compilation failures. Change-Id: Iaee7850d8310bea693996ac618b95252ca5d1b35 Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1626397 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Deepak Nibade <dnibade@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: replace pr_err with nvgpu_errSourab Gupta2018-01-08
| | | | | | | | | | | | | Replace the linux specific pr_err with nvgpu_err function Change-Id: I856a3030c62009b078a8cdfc0050b541a66e6eaa Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1626400 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@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: remove dma-buf.h include in channelSourab Gupta2018-01-08
| | | | | | | | | | | | | | The patch removes the dma-buf.h include from channel_gk20a.c, now that there are no references to dma_buf present here. Change-Id: I079c3c3763e7ac4f91e43a4bc54a23ec8d5a23fa Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1626396 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@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: Remove bare channel schedulingTerje Bergstrom2018-01-02
| | | | | | | | | | | | | | | | Remove scheduling IOCTL implementations for bare channels. Also removes code that constructs bare channels in runlist. Bug 1842197 Change-Id: I6e833b38e24a2f2c45c7993edf939d365eaf41f0 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1627326 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Implement abstraction for finding TIDTerje Bergstrom2017-12-28
| | | | | | | | | | | | | Implement abstraction for finding the thread ID of thread currently being run. This is tracked for context switch tracing. In Linux kernel this is implemented by returning PID. Change-Id: Id46a318894f9a2ff3c85d2c8ef0b02c52783f122 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1627239 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Remove support for channel eventsTerje Bergstrom2017-12-28
| | | | | | | | | | | | | | Remove support for events for bare channels. All users have already moved to TSGs and TSG events. Bug 1842197 Change-Id: Ib3ff68134ad9515ee761d0f0e19a3150a0b744ab Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1618906 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: Remove support for bare channelsTerje Bergstrom2017-12-28
| | | | | | | | | | | | | | | Remove remaining support for bare channels. All users of bare channels have already moved to TSGs. Bug 1842197 Change-Id: I1ff12677253b160dac9bebe6925ad0839ea07cfc Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1618905 Reviewed-by: Automatic_Commit_Validation_User 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: Disallow use of bare channelsTerje Bergstrom2017-12-12
| | | | | | | | | | | | | All channels need to now be wrapped in TSGs. Disallow use of bare channels by preventing creation of GPFIFO for them. Bug 1842197 Change-Id: Id0ebee4c590804b96c09f8951e35ba2680b596e7 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1612697 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: use nvgpu list APIs instead of linux APIsDeepak Nibade2017-12-08
| | | | | | | | | | | | | | | | | Use nvgpu specific list APIs nvgpu_list_for_each_entry() instead of calling Linux specific list APIs list_for_each_entry() Jira NVGPU-444 Change-Id: I3c1fd495ed9e8bebab1f23b6769944373b46059b Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1612442 Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Alex Waterman <alexw@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: cleanup uapi header includesDeepak Nibade2017-11-28
| | | | | | | | | | | | | | | | | | | | | With recent rework in nvgpu most of the <uapi/linux/nvgpu.h> includes are not needed so remove them Remove use of NVGPU_DBG_GPU_REG_OP_* in gk20a/gr_gk20a.c and use common definition instead Remove use of NVGPU_ALLOC_GPFIFO_FLAGS_REPLAYABLE_FAULTS_ENABLE in gp10b/fifo_gp10b.c by defining new common flag NVGPU_GPFIFO_FLAGS_REPLAYABLE_FAULTS_ENABLE and then parsing it in API nvgpu_gpfifo_user_flags_to_common_flags() Jira NVGPU-363 Change-Id: I8e653275ea3f443f24be7284d54f2115636aba3f Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1606108 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: move cycle state buffer handler to linuxDeepak Nibade2017-11-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | We use dma_buf pointer cyclestate_buffer_handler in common code But since this is linux specific, we need to move this out of common code and into linux specific code Move dma_buf pointer cyclestate_buffer_handler from common channel code to struct nvgpu_channel_linux Fix all pointer accesses to this handle Move gk20a_channel_free_cycle_stats_buffer() to ioctl_channel.c since it is mostly linux specific And since gk20a_channel_free_cycle_stats_buffer() needs to be called while closing the channel, call it from nvgpu_channel_close_linux() Jira NVGPU-397 Jira NVGPU-415 Change-Id: Ifb429e49b8f7a1c9e2bc757f3efdd50b28ceca1f Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1603909 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: move snapshot_client memory handling to linuxDeepak Nibade2017-11-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We right now store dmabuf fd and dma_buf pointer for gk20a_cs_snapshot_client But since dma_buf and all related APIs are linux specific, we need to remove them from common code and move them to linux specific code Add new linux specific structure gk20a_cs_snapshot_client_linux which includes struct gk20a_cs_snapshot_client and linux specific dma_buf pointer In gk20a_attach_cycle_stats_snapshot(), we first handle all dma_buf related operations and then call gr_gk20a_css_attach() Move gk20a_channel_free_cycle_stats_snapshot() to ioctl_channel.c In gk20a_channel_free_cycle_stats_snapshot(), we call gr_gk20a_css_detach() and then free up dma_buf in linux specific code We also need to call gk20a_channel_free_cycle_stats_snapshot() while closing the channel, so call it from linux specific nvgpu_channel_close_linux() Jira NVGPU-397 Jira NVGPU-415 Change-Id: Ida27240541f6adf31f28d7d7ee4f51651c6d3de2 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1603908 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: define error_notifiers in common codeDeepak Nibade2017-11-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All the linux specific error_notifier codes are defined in linux specific header file <uapi/linux/nvgpu.h> and used in all the common driver But since they are defined in linux specific file, we need to move all the uses of those error_notifiers in linux specific code only Hence define new error_notifiers in include/nvgpu/error_notifier.h and use them in the common code Add new API nvgpu_error_notifier_to_channel_notifier() to convert common error_notifier of the form NVGPU_ERR_NOTIFIER_* to linux specific error notifier of the form NVGPU_CHANNEL_* Any future additions to error notifiers requires update to both the form of error notifiers Move all error notifier related metadata from channel_gk20a (common code) to linux specific structure nvgpu_channel_linux Update all accesses to this data from new structure instead of channel_gk20a Move and rename below APIs to linux specific file and declare them in error_notifier.h nvgpu_set_error_notifier_locked() nvgpu_set_error_notifier() nvgpu_is_error_notifier_set() Add below new API and use it in fifo_vgpu.c nvgpu_set_error_notifier_if_empty() Include <nvgpu/error_notifier.h> wherever new error_notifier codes are used NVGPU-426 Change-Id: Iaa5bfc150e6e9ec17d797d445c2d6407afe9f4bd Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1593361 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: use submit callback only in linux codeKonsta Holtta2017-11-22
| | | | | | | | | | | | | | | | | Move the implementation for channel job update callbacks that is based on Linux specific work_struct usage to Linux-specific code. This requires a bit of extra work for allocating OS-specific priv data for channels which is also done in this patch. The priv data will be used more when more OS-specific features are moved. Jira NVGPU-259 Change-Id: I24bc0148a827f375b56a1c96044685affc2d1e8c Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1589321 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Include UAPI explicitlyTerje Bergstrom2017-11-13
| | | | | | | | | | | | | Add explicit #includes for <uapi/linux/nvgpu.h> for source code files that depend on it. JIRA NVGPU-259 Change-Id: I717d5f1493423fd3a7a34b6dd3380d33a9307a09 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1596254 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: remove NVGPU_ALLOC_GPFIFO_EX_FLAGS_* from common codeDeepak Nibade2017-11-10
| | | | | | | | | | | | | | | | | | | | | In gk20a_channel_alloc_gpfifo(), we use linux specific flags NVGPU_ALLOC_GPFIFO_EX_FLAGS_* Since common code should be independent of linux specific code, define new flags NVGPU_GPFIFO_FLAGS_SUPPORT_* in common code and use them in gk20a_channel_alloc_gpfifo() Linux code will parse the user flags and send appropriate flags to gk20a_channel_alloc_gpfifo() Jira NVGPU-381 Change-Id: Ibec51903b3407175fbba727208483b0dc36a5772 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1594422 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: define runlist level in common codeDeepak Nibade2017-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | All the runlist levels NVGPU_RUNLIST_INTERLEAVE_LEVEL_* are declared in linux specific uapi header and used in common code But since common code should be linux-independent, move these uses out of common code Define new runlist levels NVGPU_FIFO_RUNLIST_INTERLEAVE_LEVEL_* in common code and use them wherever required Add new API nvgpu_get_common_runlist_level() to get common runlist level of the form NVGPU_FIFO_RUNLIST_INTERLEAVE_LEVEL_* from linux specific runlist level of the form NVGPU_RUNLIST_INTERLEAVE_LEVEL_* Jira NVGPU-259 Change-Id: Ic19239f0f8275683d5d1b981df530acd90e6dfbb Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1594327 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@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: support tuning per-ch deterministic optsKonsta Holtta2017-11-06
| | | | | | | | | | | | | | | | Add a new ioctl NVGPU_GPU_IOCTL_SET_DETERMINISTIC_OPTS to adjust deterministic options on a per-channel basis. Currently, the only supported option is to relax the no-railgating requirement on open deterministic channels. This also disallows submits on such channels, until the railgate option is reset. Bug 200327089 Change-Id: If4f0f51fd1d40ad7407d13638150d7402479aff0 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1554563 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: define EVENT_IDs in common codeDeepak Nibade2017-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | All the event ids NVGPU_IOCTL_CHANNEL_EVENT_ID_* are defined in linux specific user header uapi/linux/nvgpu.h and can't be used in common code Hence add new definitions of type NVGPU_EVENT_ID_* for all the events in common code and use them wherever required in common code For future additions to event ids, we need to update both NVGPU_IOCTL_CHANNEL_EVENT_ID_* and NVGPU_EVENT_ID_* fields Also add new API nvgpu_event_id_to_ioctl_channel_event_id() to convert common event_id of the form NVGPU_EVENT_ID_* to Linux specific event_id of the form NVGPU_IOCTL_CHANNEL_EVENT_ID_* Use this API in gk20a_channel/tsg_event_id_post_event() to get correct event_id Jira NVGPU-259 Change-Id: I15a7f41181fdbb8f1876f88bbcd044447d88325f Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1591434 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: move submit path to linuxDeepak Nibade2017-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nvgpu submit path has a lot of dependency on Linux framework e.g. use of copy_from_user, use of structures defined in uapi/nvgpu headers, dma_buf_* calls for trace support etc Hence to keep common code independent of Linux code, move submit path to Linux directory Move below APIs to common/linux/channel.c trace_write_pushbuffer() trace_write_pushbuffer_range() gk20a_submit_prepare_syncs() gk20a_submit_append_priv_cmdbuf() gk20a_submit_append_gpfifo() gk20a_submit_channel_gpfifo() Move below APIs to common/linux/ce2.c gk20a_ce_execute_ops() Define gk20a_ce_execute_ops() in common/linux/ce2.c, and declare it in gk20a/ce2_gk20a.h since it is needed in common/mm code too Each OS needs to implement this API separately gk20a_channel_alloc_gpfifo() use sizeof(nvgpu_gpfifo) to get size of one gpfifo entry, but structure nvgpu_gpfifo is linux specific Define new nvgpu_get_gpfifo_entry_size() in linux specific code and use it in gk20a_channel_alloc_gpfifo() to get gpfifo entry size Each OS needs to implement this API separately Export some APIs from gk20a/ce2_gk20a.h and gk20a/channel_gk20a.h that are needed in linux code Jira NVGPU-259 Jira NVGPU-313 Change-Id: I360c6cb8ce4494b1e50c66af334a2a379f0d2dc4 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1586277 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Split ctxsw_trace API into non-Linux componentAlex Waterman2017-11-01
| | | | | | | | | | | | | | | | | | | Split the ctxsw trace "core" API code into <nvgpu/ctxsw_trace.h>. This is not perect though since there's some Linuxisms present in the HAL and as such that code has to be hidden by the ctxsw tracing CONFIG. But this patch should work for QNX such that it will allow the code to build as long as CONFIG_GK20A_CTXSW_TRACE is not set. Also fix the copywrite notice in the ctxsw code present under common/linux to be GPL. JIRA NVGPU-287 Change-Id: I94715864caf335b7220185492e4629d713b025e0 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1589429 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Move ctxsw_trace_gk20a.c to common/linuxAlex Waterman2017-10-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Migrate ctxsw_trace_gk20a.c to common/linux/ctxsw_trace.c. This has been done becasue the ctxsw tracing code is currently too tightly tied to the Linux OS due to usage of a couple system calls: - poll() - mmap() And general Linux driver framework code. As a result pulling the logic out of the FECS tracing code is simply too large a scope for time time being. Instead the code was just copied as much as possible. The HAL ops for the FECS code was hidden behind the FECS tracing config so that the vm_area_struct is not used when QNX does not define said config. All other non-HAL functions called by the FECS ctxsw tracing code ha now also been hidden by this config. This is not pretty but for the time being it seems like the way to go. JIRA NVGPU-287 Change-Id: Ib880ab237f4abd330dc66998692c86c4507149c2 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1586547 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: check gpfifo before submit workDebarshi Dutta2017-10-25
| | | | | | | | | | | | | | User can call submit IOCTL before alloc_gpfifo IOCTL and can easily cause a kernel panic. The fix checks for a valid gpfifo.mem before proceeding with the submitted work. Bug 1968309 Change-Id: I5c1fc6f52b25426cd45e58e8b2e0e5bc6aa0c32f Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1584519 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Begin reorganizing VM mapping/unmappingAlex Waterman2017-10-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move vm_priv.h to <nvgpu/linux/vm.h> and rename nvgpu_vm_map() to nvgpu_vm_map_linux(). Also remove a redundant unmap function from the unmap path. These changes are the beginning of reworking the nvgpu Linux mapping and unmapping code. The rest of this patch is just the necessary changes to use the new map function naming and the new path to the Linux vm header. Patch Series Goal ----------------- There's two major goals for this patch series. Note that these goals are not achieved in this patch. There will be subsequent patches. 1. Remove all last vestiges of Linux code from common/mm/vm.c 2. Implement map caching in the common/mm/vm.c code To accomplish this firstly the VM mapping code needs to have the struct nvgpu_mapped_buf data struct be completely Linux free. That means implementing an abstraction for this to hold the Linux stuff that mapped buffers carry about (SGT, dma_buf). This is why the vm_priv.h code has been moved: it will need to be included by the <nvgpu/vm.h> header so that the OS specific struct can be pulled into struct nvgpu_mapped_buf. Next renaming the nvgpu_vm_map() to nvgpu_vm_map_linux() is in preparation for adding a new nvgpu_vm_map() that handles the map caching with nvgpu_mapped_buf. The mapping code is fairly straight forward: nvgpu_vm_map does OS generic stuff; each OS then calls this function from an nvgpu_vm_map_<OS>() or the like that does any OS specific adjustments/management. Freeing buffers is much more tricky however. The maps are all reference counted since userspace does not track buffers and expects us to handle this instead. Ugh! Since there's ref-counts the free code will require a callback into the OS specific code since the OS specific code cannot free a buffer directly. THis make's the path for freeing a buffer quite convoluted. JIRA NVGPU-30 JIRA NVGPU-71 Change-Id: I5e0975f60663a0d6cf0a6bd90e099f51e02c2395 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1578896 GVS: Gerrit_Virtual_Submit Reviewed-by: David Martinez Nieto <dmartineznie@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: cleanup of dbg_gpu_gk20aDebarshi Dutta2017-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | This change contains a generic cleanup of linux dependent parts of the dbg_gpu_gk20a.* files. The following changes have been made 1) Moving methods into ioctl_dbg.* inside common/linux/ 2) The structures dbg_session_gk20a and dbg_session_channel_data have been split into two parts. struct device *dev is removed from struct dbg_session_gk20a and instead packed into struct dbg_session_gk20a_linux alongwith dbg_session_gk20a and is moved into ioctl_dbg. dbg_session_gk20a is now rid of any linux dependencies and remains in dbg_gpu_gk20a. Similarly, struct file is removed from struct dbg_session_channel_data and is now packed into struct dbg_session_channel_data_linux alongwith dbg_session_channel_data and is moved into ioctl_dbg. struct dbg_session_channel_data is now rid of linux dependencies and remains in dbg_gpu_gk20a. 3) A callback function is added in order to release the dbg_session_channel_data. JIRA NVGPU-205 Change-Id: I853da6dfbf9a96b7cd210beb77f2304445ff7ea6 Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1575191 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Abstract rw_semaphore implementationTerje Bergstrom2017-10-14
| | | | | | | | | | | | | | Abstract implementation of rw_semaphore. In Linux it's implemented in terms of rw_semaphore. Change deterministic_busy to use the new implementation. JIRA NVGPU-259 Change-Id: Ia9c1b6e397581bff7711c5ab6fb76ef6d23cff87 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1570405 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 2024-08-21 22:22:04 -0400