slim_msm: Add support for external MDM restart

If external MDM restarts when MDM slimbus channels are active, it
is possible that the MDM framer was clocking the bus, and ADSP was
not active. Make sure apps wakes up ADSP and checks the framer status
so that slimbus is clocked by ADSP instead of MDM, and communication
over slimbus is restored.

Signed-off-by: Naveen Kaje <nkaje@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slimbus: Fix logical address notification mechanism

Make sure device-up/down notifications don't involve race condition,
and sub-system restart in such cases is handled gracefully

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim_ngd: Handle error flags before handling SENT flag

It's possible that error flags were set alongwith SENT flag for
TX transaction status. In such a scenario, error flag status should
be handled (and SENT flag should be cleared). Move error-flag
handling ahead of SENT flag handling to avoid interrupt being called
twice, and completion being set twice.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slimbus: Enable clients to send user messages to devices.

Slimbus protocol allows user messages of destination referred, or
source referred type to be sent to a slimbus device.
Provide framework to support such messages. Note that, controller
may not support all user messages.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim_ngd: Support REPEAT_CHANGE_VALUE user message

REPEAT_CHANGE_VALUE user message is used to transfer high amount of
messaging data efficiently.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slimbus: Use physical address type where physical address is used

Use physical address type for buffers using physical address.
(e.g. interaction with data-mover engine)

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim_ngd: Use QMI server up notification instead of APR for probing

Slimbus QMI-server can reside on any other remote processor.
Avoid depedency on APR (for APR state) by utilizing QMI server-up
notification for slimbus hardware initialization from apps processor.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim-ngd: change log level of slave_notify completion

Change the logging of slave_notify completion to debug to avoid
excessive logging.

Signed-off-by: Naveen Kaje <nkaje@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Slim_ngd: Modify waiting mechanism in kthread

wait_for_completion_timeout() is not a good option in
kthread as it leads to scheduling the kthread on the every timeout.
Hence modify it to wait_for_completion() from
wait_for_completion_timeout().

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
qseecom: Validate shared buffer length & virtual address

Return -EINVAL if virtual addr of shared buffer is NULL or
shared buffer length is 0

Signed-off-by: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
qseecom: Add support for PFE feature

Add key management support for crypto HW used for
PFE (per file encryption) features.

Signed-off-by: Mona Hossain <mhossain@codeaurora.org>
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
qseecom: Check for FDE/PFE feature

Add checks for PFE/FDE feature before executing anything
related to the feature.

Signed-off-by: Mona Hossain <mhossain@codeaurora.org>
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
ARM: dts: msm: Add flags for FDE/PFE support

Add following flags
- support-fde
- support-pfe

These flags are needed to be set on targets that support
FDE (full disk encryption) and PFE (per file encryption),
respectively.

[neo: only add for msm8974.]

Signed-off-by: Mona Hossain <mhossain@codeaurora.org>
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>