nvidia-tegra-modules.git/drivers/dma, branch gpu-paging NVIDIA's kernel modules to support tegra chips (used in Jetson boards) drivers: dma: do not give up if pause failed 2019-03-11T18:00:36+00:00 dmitry pervushin dpervushin@nvidia.com 2019-01-24T08:44:58+00:00 0df5f8950a96890b873767096c7bd98b36d503e3 There could be a condition when hw pausing of DMA channel fails In this case, we should continue with regular way of terminating Bug 2491575 Bug 2448518 Change-Id: I5cc7d1ff8a78ffdd7976e96ed644d71d7c7bdf0d Signed-off-by: dmitry pervushin <dpervushin@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2002710 (cherry picked from commit aed8261b985741d3d823cf36271c9bde43e4f073) Reviewed-on: https://git-master.nvidia.com/r/2035709 GVS: Gerrit_Virtual_Submit Reviewed-by: Rahul Jain (SW-TEGRA) <rahuljain@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
There could be a condition when hw pausing of DMA channel fails
In this case, we should continue with regular way of terminating

Bug 2491575
Bug 2448518

Change-Id: I5cc7d1ff8a78ffdd7976e96ed644d71d7c7bdf0d
Signed-off-by: dmitry pervushin <dpervushin@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2002710
(cherry picked from commit aed8261b985741d3d823cf36271c9bde43e4f073)
Reviewed-on: https://git-master.nvidia.com/r/2035709
GVS: Gerrit_Virtual_Submit
Reviewed-by: Rahul Jain (SW-TEGRA) <rahuljain@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
dma: t186: fix unbalanced spinlock / unlock on err 2018-09-07T07:36:06+00:00 Alex Van Brunt avanbrunt@nvidia.com 2018-09-06T15:07:45+00:00 adfa134be6ecabf93d923bfaef1a5617133a5236 tegra_dma_terminate_all() was not unlocking the spinlock in the case that it returned an error. That could leave the lock permanently locked. Fix it by adding an unlock before returning the error. bug 200434802 Change-Id: If92be9f36c1ca7b24566e26a439081559fe2f284 Signed-off-by: Alex Van Brunt <avanbrunt@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1814188 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
tegra_dma_terminate_all() was not unlocking the spinlock in the case that
it returned an error. That could leave the lock permanently locked.

Fix it by adding an unlock before returning the error.

bug 200434802

Change-Id: If92be9f36c1ca7b24566e26a439081559fe2f284
Signed-off-by: Alex Van Brunt <avanbrunt@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1814188
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
tegra: gpcdma: add support to know total transferred bytes 2018-09-04T13:40:00+00:00 kartik kkartik@nvidia.com 2018-08-31T11:31:28+00:00 510ee67fc8114b16317fb010b62288192ed57a2b Add support to know the total bytes transferred, which will be used by client driver through dmaengine_tx_status() callback. This is useful to know the transfer status when client is operating in cyclic mode. Bug 1874194 Bug 1997353 Change-Id: I44ca125da1460463c264a61badb24f9acabee099 Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1459932 Signed-off-by: kartik <kkartik@nvidia.com> (cherry picked from k3.10 commit 48780918161fcdcd7177b3c755aff154c372bdb4) Reviewed-on: https://git-master.nvidia.com/r/1811627 Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> Tested-by: Bitan Biswas <bbiswas@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Add support to know the total bytes transferred, which will be used
by client driver through dmaengine_tx_status() callback. This is
useful to know the transfer status when client is operating in
cyclic mode.

Bug 1874194
Bug 1997353

Change-Id: I44ca125da1460463c264a61badb24f9acabee099
Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1459932
Signed-off-by: kartik <kkartik@nvidia.com>
(cherry picked from k3.10 commit
48780918161fcdcd7177b3c755aff154c372bdb4)
Reviewed-on: https://git-master.nvidia.com/r/1811627
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Tested-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
gpcdma: Add DMA pause/resume support 2018-05-02T11:33:21+00:00 Laxman Dewangan ldewangan@nvidia.com 2018-04-06T08:24:18+00:00 c4cdef87f128b653c4d6b88a5eda387d5e0bc1e2 Adding support for DMA pause/resume. If supported by the controller, using pause during terminate all to know the current transferred bytes. After pausing a dma channel, wait for the channel busy bit to be deasserted. Maximum wait time is 100usec. Clear dma pause while configuring for next transfer. Bug 200392124 Change-Id: Iea972bf6f89fc1ff558a21433dffebe2f2334099 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1689850 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Adding support for DMA pause/resume. If supported by
the controller, using pause during terminate all to
know the current transferred bytes.

After pausing a dma channel, wait for the channel busy bit
to be deasserted. Maximum wait time is 100usec. Clear dma
pause while configuring for next transfer.

Bug 200392124

Change-Id: Iea972bf6f89fc1ff558a21433dffebe2f2334099
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1689850
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
tegra: gpcdma: make suspend/resume late/early 2018-01-23T14:29:21+00:00 Shardar Shariff Md smohammed@nvidia.com 2018-01-16T08:26:31+00:00 503df6e16e9ef417787ea184973ec9012c300463 Make suspend/resume calls as noirq late/early calls Bug 200379752 Change-Id: I03da8198174ec37543456d3b5f4e057843281b40 Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1639679 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Make suspend/resume calls as noirq late/early calls

Bug 200379752

Change-Id: I03da8198174ec37543456d3b5f4e057843281b40
Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1639679
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
nvidia: use $(srctree.$(overlay)) 2017-11-09T11:27:16+00:00 Stephen Warren swarren@nvidia.com 2017-11-06T21:53:42+00:00 629ade0daaa5b8a3c24dbeadc2a5fb046d4dbbf4 Update all Makefiles to make use of the new srctree.$(overlay) variables to remove hard-coding the path to any overlays. One direct reference remains in a hard-coded include statement in drivers/misc/tegra-cec/. Bug 1978395 Change-Id: I5cdce04e019567a9bbfffaf0e92a61bd16806e99 Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1593800 Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> Reviewed-by: Timo Alho <talho@nvidia.com> Tested-by: Timo Alho <talho@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Update all Makefiles to make use of the new srctree.$(overlay) variables
to remove hard-coding the path to any overlays. One direct reference
remains in a hard-coded include statement in drivers/misc/tegra-cec/.

Bug 1978395

Change-Id: I5cdce04e019567a9bbfffaf0e92a61bd16806e99
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1593800
Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: Timo Alho <talho@nvidia.com>
Tested-by: Timo Alho <talho@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
nvidia: use kernel overlay features 2017-10-29T18:00:42+00:00 Stephen Warren swarren@nvidia.com 2017-09-14T16:51:18+00:00 20bb0324e532863cafc5dc41e8cd5a6ec28413d8 Update all Kconfig files and Makefiles to rely on the kernel overlay feature. In particular, don't include any Kconfig files or Makefiles from other overlays. -I directives in CFLAGS are not yet cleaned up. Bug 1978395 Change-Id: I425d37d55f8ea61fb3a082a1504f994ff30cec03 Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1561187 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Update all Kconfig files and Makefiles to rely on the kernel overlay
feature. In particular, don't include any Kconfig files or Makefiles
from other overlays. -I directives in CFLAGS are not yet cleaned up.

Bug 1978395

Change-Id: I425d37d55f8ea61fb3a082a1504f994ff30cec03
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1561187
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
dma: t186: Deprecate support of kernel version <4.4 2017-08-14T11:57:36+00:00 Laxman Dewangan ldewangan@nvidia.com 2017-08-13T14:38:13+00:00 75284504c0f290d1fc1a4e43719be250ac966c6b As T186 supports are moved to the K4.4 and later version of kernel, removing the code which supports the linux kernel version <4.4. Change-Id: I24e2b6847ccb86d5a86a3117d5731de8c4285a36 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1537859 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
As T186 supports are moved to the K4.4 and later version
of kernel, removing the code which supports the linux
kernel version <4.4.

Change-Id: I24e2b6847ccb86d5a86a3117d5731de8c4285a36
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1537859
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
gpc-dma: fix coverity defect 2017-08-14T08:00:37+00:00 dmitry pervushin dpervushin@nvidia.com 2017-08-11T07:17:07+00:00 c77da8866fba32f257384aef76c8ce94d0c6d3a7 Uninitialized variable might be unsed in case of missing device tree node Bug 1971602 Change-Id: Iceec970dddc96e9009acb0ee54aae8525863fbd3 Signed-off-by: dmitry pervushin <dpervushin@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1537277 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Uninitialized variable might be unsed in case of missing
device tree node

Bug 1971602

Change-Id: Iceec970dddc96e9009acb0ee54aae8525863fbd3
Signed-off-by: dmitry pervushin <dpervushin@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1537277
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
dma: t186: fix pre-allocate descriptors 2017-08-14T07:59:48+00:00 dmitry pervushin dpervushin@nvidia.com 2017-08-09T11:52:21+00:00 0ef8c1e1b9af93ba4e43f9882e02ba50a2d49fe0 If preallocating is enabled in the device tree, kernel would panic on boot. The reason is uninitialized fields; the patch is to initialize them in (correct) order Bug 1971602 Change-Id: I594ac77a6856a20cc2a087dd6dd1d198470200ab Signed-off-by: dmitry pervushin <dpervushin@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1535936 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
If preallocating is enabled in the device tree, kernel would
panic on boot.

The reason is uninitialized fields; the patch is to initialize
them in (correct) order

Bug 1971602

Change-Id: I594ac77a6856a20cc2a087dd6dd1d198470200ab
Signed-off-by: dmitry pervushin <dpervushin@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1535936
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>