ARM: dts: msm: add perf-events support for msm8226

Add the device definitions for the Cortex-A7
PMU on msm8226.

Change-Id: I8752ec03ddc3d6d21bf1b996e81eaca7fb57d8b4
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
Perf: Fix counts across power collapse

After entry and exit from power collapse, the perf pm_notifier was
calling perf_pmu_disable/enable functions from perf core. Perf core
maintains a counter that it uses to match disable and enable calls but
since pm_notifier is invoked asynchronously, the counter was getting a
non-zero value which prevented the pmu from being enabled. As a result of
this, we were seeing zero counts for some cores across power collapse.

Make the architecture specific calls directly from pm_notifier.

Change-Id: I744e190906a20e70e1e4798235215c385018b121
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
ARM: dts: msm: add perf-events support for msm8x10, msm8x12

Add the device definitions for the Cortex-A7
PMU on msm8x10.

Change-Id: I0e45c01cec2c92e437cc11cee88777bca271b839
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
Perf: Make per-process counters configurable

Add feature to enable/disable per-process tracecounters at run-time.

Change-Id: Id6a4c7a0ecd1f5add85464c6ed260860e15c4e3b
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
msm: perf: Add L2 support for tracecounters

Add L2 counter output to the tracecounters implementation.
This enables collection of L2 PMU counter values upon context switch.
Set up filtering based on number of L2 counters and number of cores.
Read L2 counter values and display them along with L1 counter values.

Change-Id: I8bbbd251ee52c66505d22ccf037c601013a916f0
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
Perf: keep events across hotplug

Keep event list alive across a CPU hotplug so that perf
can resume when the CPU comes back online. Bring a CPU
online when exiting a perf session so it can be cleaned
up properly.

Change-Id: Ie0e4a43f751beb77afdc84e9d52b21780f279d80
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
Perf: bring CPU online if needed when disabling irq

When disabling an irq, check that the CPU is online
before trying to run on that CPU. Bring the CPU
online if necessary.

This fixes a problem where a CPU that was not online
when disabling the irq caused the disable and the
free to fail. A subsequent attempt to request the irq
also failed because it had not been freed.

Change-Id: Ib873b5ded83ab843ea4e609f196a31ef0083a213
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
Perf: Support sw events across hotplug

When CPUs are hotplugged off and on, let the various
sw events continue after the hotplug.

Change-Id: Id1aaf30c459c9cf7c9c38967f9ccad56d4062fd3
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
msm: perf: initialise krait perf L2 counter enables

Clear the L2 counter enables at initialisation.
They are undefined out of reset.

Change-Id: I957106012625ae09efec47d4f657381963d87a5a
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
msm: perf: clean up duplicate constraint events

Events with a duplicate constraint are set to state=OFF when detected,
so that their duplicate counts are not read. However, they were not being
cleaned up because the core code only cleaned up ACTIVE events.
This resulted in counters not being freed and eventually running out
of resources.

Clean up the events with state==OFF that were marked that way because of
constraint duplication.
Ensure counts are not updated for OFF events.

Change-Id: If532801c79e6ad6809869eb0a3063774f00c92c3
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
Perf: Make per-process counters cumulative

In order to get overall value for performance counters, remove reset during
context switches. Add mechanism to calculate deltas for output to the trace
buffer.

Change-Id: I03d894a1b3bd400d8c256c3068f917ed001fbfd9
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
Perf: Fix PID for tracepoints

Make previous value of PID a per_cpu variable.
This is required to get the correct value for previous_pid.

Change-Id: I63baf8164ae9226189c745339b122d806901789d
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
Perf: preserve registers across hotplug

Preserve the registers with userspace bits in them
across hotplug and power collapse. This allows
userspace applications to use the performance counters.

Change-Id: I391563ab770df9aabb5d717b6bc4725750ad0283
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
msm: perf: fix formatting of trace entry

Remove extraneous comma which breaks processing of
the trace data.

Change-Id: I5fda44cde6a39b16be06c72bc968afc19636b32f
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
msm: perf: Fix cpu id logic in tracectr notifier

The code in tracecounter context switch notifier was using
smp_processor_id() in order to get cpu number. This was resulting
into following dmesg error: "BUG: using smp_processor_id() in
preemptible [00000000] code".
Use thread_info struct to get the cpu #.

Bug: 12134522
Change-Id: Ic7c995d2c2bc25c4389248854dec91fb84ce3128
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: Mekala Natarajan <mekalan@codeaurora.org>
msm: ocmem: Do not use data mover for clearing ocmem memory

In the non secure environment the data mover is used to clear
the ocmem memory. The ocmem driver no longer uses the data
mover for this operation.

Signed-off-by: Neeti Desai <neetid@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
msm: ocmem: Add macro and region size information to ocmem region

Some targets support half sized macros in the last region. Previously,
for these regions, only half the macros were turned on, and the clients
could not access memory. Read the hardware register to check if the
target supports half sized macros and update the calculation to switch
memory power states.

Change-Id: Idb6e6b8c11b42d3e0a72fa27bd8c63e48282af97
Signed-off-by: Neeti Desai <neetid@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
msm: ocmem: Call restore_sec_config() after every power collapse

As the QRIB is enabled, after every power collapse of ocmem, the
QRIB is reset to the maximum security state. Due to this the apps
processor cannot access the ocmem register space.

The restore_sec_config() scm call needs to be called before any
register is accessed after a power collapse to ensure that the
security configuration is restored. The clocks need to be turned
on before every call that is made into TZ to ensure that there
is no power collapse.

CRs-Fixed: 651324, 660089
Change-Id: Ieb6b635142057e219de29e811c93749f6500cec5
Signed-off-by: Neeti Desai <neetid@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
mach-msm: Add missing Kconfig bits

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
msm: smd_tty: add device tree support to smd_tty drivers

SMD TTY is configured using local tables that do not
allow customization on a per-target basis.

Add device tree support to configure SMD TTY devices.

Change-Id: Ie02dd63a0bec8edff77c8cbeeb72ae7331a0c67a
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>