linux-stable.git/include/linux/coresight.h, branch v4.19.26

coresight: Introduce support for Coresight Address Translation Unit

2018-07-15T11:52:58+00:00

Add the initial support for Coresight Address Translation Unit, which
augments the TMC in Coresight SoC-600 by providing an improved Scatter
Gather mechanism. CATU is always connected to a single TMC-ETR and
converts the AXI address with a translated address (from a given SG
table with specific format). The CATU should be programmed in pass
through mode and enabled even if the ETR doesn't use the translation
by CATU.

This patch provides mechanism to enable/disable the CATU always in the
pass through mode.

We reuse the existing ports mechanism to link the TMC-ETR to the
connected CATU.

i.e, TMC-ETR:output_port0 -> CATU:input_port0

Reference manual for CATU component is avilable in version r2p0 of :
"Arm Coresight System-on-Chip SoC-600 Technical Reference Manual".

Cc: Mathieu Poirier 
Signed-off-by: Suzuki K Poulose 
Signed-off-by: Mathieu Poirier 
Signed-off-by: Greg Kroah-Hartman

coresight: Add helper device type

2018-07-15T11:52:58+00:00

Add a new coresight device type, which do not belong to any
of the existing types, i.e, source, sink, link etc. A helper
device could be connected to a coresight device, which could
augment the functionality of the coresight device.

This is intended to cover Coresight Address Translation Unit (CATU)
devices, which provide improved Scatter Gather mechanism for TMC
ETR. The idea is that the helper device could be controlled by
the driver of the device it is attached to (in this case ETR),
transparent to the generic coresight driver (and paths).

The operations include enable(), disable(), both of which could
accept a device specific "data" which the driving device and
the helper device could share. Since they don't appear in the
coresight "path" tracked by software, we have to ensure that
they are powered up/down whenever the master device is turned
on.

Cc: Mathieu Poirier 
Signed-off-by: Suzuki K Poulose 
Signed-off-by: Mathieu Poirier 
Signed-off-by: Greg Kroah-Hartman

coresight: Cleanup device subtype struct

2018-07-15T11:52:58+00:00

Clean up our struct a little bit by using a union instead of
a struct for tracking the subtype of a device.

Cc: Mathieu Poirier 
Signed-off-by: Suzuki K Poulose 
Signed-off-by: Mathieu Poirier 
Signed-off-by: Greg Kroah-Hartman

coresight: Cleanup platform description data

2018-07-15T11:52:58+00:00

Nobody uses the "clk" field in struct coresight_platform_data.
Remove it.

Cc: Mathieu Poirier 
Signed-off-by: Suzuki K Poulose 
Signed-off-by: Mathieu Poirier 
Signed-off-by: Greg Kroah-Hartman

coresight: Remove function coresight_vpid_to_pid()

2018-07-15T11:52:56+00:00

Now that we prevent users from using contextID tracing when PID namespaces
are involved there is no client for function coresight_vpid_to_pid().  As
such simply remove it.

Signed-off-by: Mathieu Poirier 
Reviewed-by: Kim Phillips 
Acked-by: "Eric W. Biederman" 
Signed-off-by: Greg Kroah-Hartman

coresight: Moving framework and drivers to SPDX identifier

2018-05-14T14:19:59+00:00

Moving all kernel side CoreSight framework and drivers to SPDX identifier.

Signed-off-by: Mathieu Poirier 
Signed-off-by: Greg Kroah-Hartman

coresight: refactor with function of_coresight_get_cpu

2017-06-09T09:45:25+00:00

This is refactor to add function of_coresight_get_cpu(), so it's used to
retrieve CPU id for coresight component. Finally can use it as a common
function for multiple places.

Suggested-by: Mathieu Poirier 
Signed-off-by: Leo Yan 
Signed-off-by: Mathieu Poirier 
Signed-off-by: Greg Kroah-Hartman

coresight: use const for device_node structures

2017-06-09T09:45:24+00:00

Almost low level functions from open firmware have used const to
qualify device_node structures, so add const for device_node
parameters in of_coresight related functions.

Signed-off-by: Leo Yan 
Reviewed-by: Stephen Boyd 
Signed-off-by: Mathieu Poirier 
Signed-off-by: Greg Kroah-Hartman

perf/core: Keep AUX flags in the output handle

2017-03-16T08:51:10+00:00

In preparation for adding more flags to perf AUX records, introduce a
separate API for setting the flags for a session, rather than appending
more bool arguments to perf_aux_output_end. This allows to set each
flag at the time a corresponding condition is detected, instead of
tracking it in each driver's private state.

Signed-off-by: Will Deacon 
Signed-off-by: Alexander Shishkin 
Signed-off-by: Peter Zijlstra (Intel) 
Cc: Arnaldo Carvalho de Melo 
Cc: Arnaldo Carvalho de Melo 
Cc: Jiri Olsa 
Cc: Linus Torvalds 
Cc: Mathieu Poirier 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Cc: Thomas Gleixner 
Cc: Vince Weaver 
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20170220133352.17995-3-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar

coresight: etm-perf: pass struct perf_event to source::enable/disable()

2016-08-31T11:05:43+00:00

With this commit [1] address range filter information is now found
in the struct hw_perf_event::addr_filters.  As such pass the event
itself to the coresight_source::enable/disable() functions so that
both event attribute and filter can be accessible for configuration.

[1] 'commit 375637bc5249 ("perf/core: Introduce address range filtering")'

Signed-off-by: Mathieu Poirier 
Signed-off-by: Greg Kroah-Hartman