nvidia-tegra-modules.git/drivers/video/tegra/dc/dsi_debug.c, branch gpu-paging NVIDIA's kernel modules to support tegra chips (used in Jetson boards) video: tegra: dsi: add hotplug support for DSI 2019-09-04T18:57:42+00:00 Santosh Reddy Galma galmar@nvidia.com 2017-07-04T06:56:19+00:00 ba9aa33a02f7d75f7162570248208c6b7eb366d5 - check if DSI support hotplug based on "nvidia,dsi-hdmi-bridge" dt property under panel dt node. - use tegra_dc_is_ext_panel() function common for DSI/DP to check if hotplug supported. - add hpd ops for DSI - support hotplug for DSI through sysfs nodes /d/tegra_dsi/hotplug and EDID read through DT - use TEGRA_DC_EXT_HDMI for DSI when hotplug supported till new tegra_dc_ext_control_output_type is defined. Bug 1912157 Change-Id: Ie5157781e12b2133281cd48e1508a71690f32550 Signed-off-by: Santosh Reddy Galma <galmar@nvidia.com> Reviewed-on: https://git-master/r/1512959 (cherry picked from commit 1cd39f11340a535aaf50105a9f9b66f721ee8dd7) (cherry picked from commit a4f53883859d679e599640e67a4feddf94d1c34a) Signed-off-by: Ken Chang <kenc@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2136236 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> 
- check if DSI support hotplug based on
"nvidia,dsi-hdmi-bridge" dt property under panel
dt node.
- use tegra_dc_is_ext_panel() function common for
DSI/DP to check if hotplug supported.
- add hpd ops for DSI
- support hotplug for DSI through sysfs nodes
/d/tegra_dsi/hotplug and EDID read through DT
- use TEGRA_DC_EXT_HDMI for DSI when hotplug
supported till new tegra_dc_ext_control_output_type
is defined.

Bug 1912157

Change-Id: Ie5157781e12b2133281cd48e1508a71690f32550
Signed-off-by: Santosh Reddy Galma <galmar@nvidia.com>
Reviewed-on: https://git-master/r/1512959
(cherry picked from commit 1cd39f11340a535aaf50105a9f9b66f721ee8dd7)
(cherry picked from commit a4f53883859d679e599640e67a4feddf94d1c34a)
Signed-off-by: Ken Chang <kenc@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2136236
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>
video: dc: include k4.14 headers to fix build 2018-07-10T17:05:51+00:00 Anshuman Kar anshumank@nvidia.com 2018-06-15T22:07:30+00:00 a175ab96740e67c7417cffb8eb243399745ee613 Header changes & NULL functions required for compilation Change-Id: I89d95a3a63a4b65158d24149687912fffa0f33b7 Signed-off-by: Anshuman Kar <anshumank@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1751365 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Header changes & NULL functions required for
compilation

Change-Id: I89d95a3a63a4b65158d24149687912fffa0f33b7
Signed-off-by: Anshuman Kar <anshumank@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1751365
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
tegra: dc: fix dsi_debug_show() on T186+ 2018-07-09T22:43:27+00:00 Axel Feldmann afeldmann@nvidia.com 2018-06-14T18:48:19+00:00 1bdf3f436aa578131c00b0f49cdd809f09b164d3 Added in TEGRA_DSCI_BASE and TEGRA_DSID_BASE to the `base` array in dsi_degug_show(). This will avoid the out of bounds errors seen on systems with dsi->max_instances > 2 Bug 200393180 Change-Id: I2c2fb0df0f7e5211f5b1b6ca339c9de7a58894f8 Signed-off-by: Axel Feldmann <afeldmann@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1750189 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Ishwarya Balaji Gururajan <igururajan@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Mitch Luban <mluban@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Added in TEGRA_DSCI_BASE and TEGRA_DSID_BASE to the
`base` array in dsi_degug_show(). This will avoid the
out of bounds errors seen on systems with dsi->max_instances > 2

Bug 200393180

Change-Id: I2c2fb0df0f7e5211f5b1b6ca339c9de7a58894f8
Signed-off-by: Axel Feldmann <afeldmann@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1750189
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Ishwarya Balaji Gururajan <igururajan@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Mitch Luban <mluban@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
tegra: dc: remove NVDISPLAY ifdefs on dsi.c 2018-02-11T13:06:40+00:00 Ishwarya Balaji Gururajan igururajan@nvidia.com 2018-01-25T20:17:09+00:00 e9d3d7838a3393813f51bd3ad14257f14986edc5 Remove CONFIG_TEGRA_NVDISPLAY on dsi.c. Use runtime APIs instead to differentiate between chips. Remove MAX_DSI_INSTANCE macro and replace with runtime inline API tegra_dc_get_max_dsi_instance. Jira TDS-2768 Change-Id: Ie34c80c61510d2fca56aaf7c65b21786ba61ef26 Signed-off-by: Ishwarya Balaji Gururajan <igururajan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1646233 GVS: Gerrit_Virtual_Submit Reviewed-by: Mitch Luban <mluban@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Remove CONFIG_TEGRA_NVDISPLAY on dsi.c. Use runtime APIs instead
to differentiate between chips.

Remove MAX_DSI_INSTANCE macro and replace with runtime inline API
tegra_dc_get_max_dsi_instance.

Jira TDS-2768

Change-Id: Ie34c80c61510d2fca56aaf7c65b21786ba61ef26
Signed-off-by: Ishwarya Balaji Gururajan <igururajan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1646233
GVS: Gerrit_Virtual_Submit
Reviewed-by: Mitch Luban <mluban@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
video: tegra: dc: update permission strings 2017-11-25T11:28:43+00:00 Ujwal Patel ujwalp@nvidia.com 2017-11-23T19:53:20+00:00 4ef2cc4b475a0293e1a79a9b2e4aac7fbb53b786 Replace permission strings with octal values as per new upstream guidelines. Link: http://lkml.kernel.org/r/7232ef011d05a92f4caa86a5e9830d87966a2eaf.1470180926.git.joe@perches.com Bug 2019748 Change-Id: Ie2fb0cea47607c99830278cbbe65a67c5f81e3c2 Signed-off-by: Ujwal Patel <ujwalp@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1604075 Reviewed-by: Shu Zhong <shuz@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Replace permission strings with octal values as per new
upstream guidelines.

Link: http://lkml.kernel.org/r/7232ef011d05a92f4caa86a5e9830d87966a2eaf.1470180926.git.joe@perches.com

Bug 2019748

Change-Id: Ie2fb0cea47607c99830278cbbe65a67c5f81e3c2
Signed-off-by: Ujwal Patel <ujwalp@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1604075
Reviewed-by: Shu Zhong <shuz@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
tegra: dc: remove NVDISPLAY ifdefs on dsi_debug.c 2017-10-26T00:29:28+00:00 Ishwarya Balaji Gururajan igururajan@nvidia.com 2017-10-17T17:54:15+00:00 37501b3eb127844c93caa707f9a76d80a91d266d remove NVDISPLAY ifdefs on dsi_debug.c Use runtime APIs instead to differentiate between chips. Jira TDS-2766 Change-Id: I5a00f4cf721318c52430fd89462c7bf547d9cee3 Signed-off-by: Ishwarya Balaji Gururajan <igururajan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1580640 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> Reviewed-by: Shu Zhong <shuz@nvidia.com> Reviewed-by: Mitch Luban <mluban@nvidia.com> 
remove NVDISPLAY ifdefs on dsi_debug.c
Use runtime APIs instead to differentiate between chips.

Jira TDS-2766

Change-Id: I5a00f4cf721318c52430fd89462c7bf547d9cee3
Signed-off-by: Ishwarya Balaji Gururajan <igururajan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1580640
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Shu Zhong <shuz@nvidia.com>
Reviewed-by: Mitch Luban <mluban@nvidia.com>
dc: make use of copy_from_user 2017-05-30T19:19:53+00:00 Pritesh Raithatha praithatha@nvidia.com 2017-05-30T07:00:17+00:00 a9f6d12c1ba93f97c23f82323aef080758ee2eaf Kernel is not supposed to directly access user space address. KASAN is reporting user-memory-access failure as following: [ 356.249276] ================================================================= [ 356.256490] BUG: KASAN: user-memory-access on address 000040000883a1e8 [ 356.263006] Read of size 1 by task sh/5690 [ 356.267096] CPU: 3 PID: 5690 Comm: sh Tainted: G B W O 4.9.28-tegra-gd84651f [ 356.275170] Hardware name: quill (DT) [ 356.278824] Call trace: [ 356.281273] [<ffff20000808c740>] dump_backtrace+0x0/0x238 [ 356.286664] [<ffff20000808c98c>] show_stack+0x14/0x20 [ 356.291708] [<ffff2000085fed7c>] dump_stack+0xa4/0xc8 [ 356.296754] [<ffff20000829c978>] kasan_report_error+0x420/0x510 [ 356.302663] [<ffff20000829d164>] kasan_report+0x74/0x80 [ 356.307879] [<ffff20000829b054>] __asan_load1+0x4c/0x58 [ 356.313094] [<ffff200008612a8c>] vsscanf+0x234/0xba8 [ 356.318049] [<ffff2000086134a4>] sscanf+0xa4/0xd0 [ 356.322746] [<ffff2000087ab18c>] host_cmd_v_blank_dcs_get_cmd+0x7c/0x140 [ 356.329435] [<ffff20000852bf64>] full_proxy_write+0xd4/0x130 [ 356.335084] [<ffff2000082c63c4>] __vfs_write+0xd4/0x258 [ 356.340298] [<ffff2000082c77cc>] vfs_write+0xcc/0x250 [ 356.345341] [<ffff2000082c9728>] SyS_write+0xb8/0x148 [ 356.350383] [<ffff2000080830b0>] el0_svc_naked+0x24/0x28 [ 356.355683] ================================================================= fixing it by using copy_from_user. Bug 200312403 Change-Id: I8fe6d2fa4df7e3dfe6b2cf51f4e7e8f00be5c30a Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com> Reviewed-on: http://git-master/r/1491867 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Sachin Nikam <snikam@nvidia.com> 
Kernel is not supposed to directly access user space address.

KASAN is reporting user-memory-access failure as following:

[  356.249276] =================================================================
[  356.256490] BUG: KASAN: user-memory-access on address 000040000883a1e8
[  356.263006] Read of size 1 by task sh/5690
[  356.267096] CPU: 3 PID: 5690 Comm: sh Tainted: G B W O 4.9.28-tegra-gd84651f
[  356.275170] Hardware name: quill (DT)
[  356.278824] Call trace:
[  356.281273] [<ffff20000808c740>] dump_backtrace+0x0/0x238
[  356.286664] [<ffff20000808c98c>] show_stack+0x14/0x20
[  356.291708] [<ffff2000085fed7c>] dump_stack+0xa4/0xc8
[  356.296754] [<ffff20000829c978>] kasan_report_error+0x420/0x510
[  356.302663] [<ffff20000829d164>] kasan_report+0x74/0x80
[  356.307879] [<ffff20000829b054>] __asan_load1+0x4c/0x58
[  356.313094] [<ffff200008612a8c>] vsscanf+0x234/0xba8
[  356.318049] [<ffff2000086134a4>] sscanf+0xa4/0xd0
[  356.322746] [<ffff2000087ab18c>] host_cmd_v_blank_dcs_get_cmd+0x7c/0x140
[  356.329435] [<ffff20000852bf64>] full_proxy_write+0xd4/0x130
[  356.335084] [<ffff2000082c63c4>] __vfs_write+0xd4/0x258
[  356.340298] [<ffff2000082c77cc>] vfs_write+0xcc/0x250
[  356.345341] [<ffff2000082c9728>] SyS_write+0xb8/0x148
[  356.350383] [<ffff2000080830b0>] el0_svc_naked+0x24/0x28
[  356.355683] =================================================================

fixing it by using copy_from_user.

Bug 200312403

Change-Id: I8fe6d2fa4df7e3dfe6b2cf51f4e7e8f00be5c30a
Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com>
Reviewed-on: http://git-master/r/1491867
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
video: tegra: dsi: Set max limit for reading panel 2017-04-11T05:44:44+00:00 Pavan Kunapuli pkunapuli@nvidia.com 2017-03-16T14:02:06+00:00 87117f687f40118b1b87e90a1a13927c60159a49 In the debugfs support for reading panel registers, max payload needs to be limited to the buff array size to avoid stack corruption. Bug 1873360 Change-Id: Ibee7bd81027d2669297942c09b905f1dd3bb09ee Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com> Signed-off-by: sakets <sakets@nvidia.com> Reviewed-on: http://git-master/r/1322188 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
In the debugfs support for reading panel registers, max payload
needs to be limited to the buff array size to avoid stack corruption.

Bug 1873360

Change-Id: Ibee7bd81027d2669297942c09b905f1dd3bb09ee
Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Signed-off-by: sakets <sakets@nvidia.com>
Reviewed-on: http://git-master/r/1322188
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
video: tegra: dc: coverity: Fix "Insecure Data handling" 2017-04-03T07:55:33+00:00 Jay Bhukhanwala jbhukhanwala@nvidia.com 2017-03-24T22:34:24+00:00 fcbedfe0b33b44b4a76c181f65e60d9ddd811bf9 Below is the full list of CIDs fixed and brief explanation for each CID 27936: write_long_data_get_cmd: Add boundary checks for size of data passed from userspace CID 27938: nvsr_dbg_read_write: copy number of bytes that equal the userspace (source) buf size, instead of kernel space (dest) buf size CID 27939: nvsr_dbg_write_write: copy number of bytes that equal the userspace (source) buf size, instead of kernel space (dest) buf size Bug 200192413 TDS-1898 Change-Id: I546c07cbee964e1bd59f8fe661aa489e3bad9c87 Reviewed-on: http://git-master/r/1327929 Reviewed-by: Mitch Luban <mluban@nvidia.com> Tested-by: Mitch Luban <mluban@nvidia.com> 
Below is the full list of CIDs fixed and brief explanation for each

CID 27936: write_long_data_get_cmd: Add boundary checks for size of data passed
           from userspace
CID 27938: nvsr_dbg_read_write: copy number of bytes that equal the userspace
           (source) buf size, instead of kernel space (dest) buf size
CID 27939: nvsr_dbg_write_write: copy number of bytes that equal the userspace
           (source) buf size, instead of kernel space (dest) buf size

Bug 200192413
TDS-1898

Change-Id: I546c07cbee964e1bd59f8fe661aa489e3bad9c87
Reviewed-on: http://git-master/r/1327929
Reviewed-by: Mitch Luban <mluban@nvidia.com>
Tested-by: Mitch Luban <mluban@nvidia.com>
video: update include paths in dc Makefile 2017-03-23T07:49:09+00:00 Naveen Kumar S nkumars@nvidia.com 2017-02-28T11:11:13+00:00 f2aaa8c5b09d22bdbf5a2de40cfd13be21d0c856 Updated include paths in dc Makefile to start from $(srctree). In-turn updated include paths for header files in various source files. bug 1846312 Change-Id: I72ccb0404ba1d21cd24c790b296fcb5d07498321 Signed-off-by: Naveen Kumar S <nkumars@nvidia.com> Reviewed-on: http://git-master/r/1313117 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Updated include paths in dc Makefile to start from
$(srctree). In-turn updated include paths for header
files in various source files.

bug 1846312

Change-Id: I72ccb0404ba1d21cd24c790b296fcb5d07498321
Signed-off-by: Naveen Kumar S <nkumars@nvidia.com>
Reviewed-on: http://git-master/r/1313117
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>