platform/x86/intel/ifs: Add current batch number to trace output

Add the current batch number in the trace output. When there are
failures, it's important to know which test content resulted in failure.

# TASK-PID CPU# ||||| TIMESTAMP FUNCTION
# | | | ||||| | |
migration/0-18 [000] d..1. 527287.084668: ifs_status: batch: 02, start: 0000, stop: 007f, status: 0000000000007f80
migration/128-785 [128] d..1. 527287.084669: ifs_status: batch: 02, start: 0000, stop: 007f, status: 0000000000007f80

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20240125082254.424859-4-ashok.raj@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

platform/x86/intel/ifs: Trace on all HT threads when executing a test

Enable the trace function on all HT threads. Currently, the trace is
called from some arbitrary CPU where the test was invoked.

This change gives visibility to the exact errors as seen by each
participating HT threads, and not just what was seen from the primary
thread.

Sample output below.

# TASK-PID CPU# ||||| TIMESTAMP FUNCTION
# | | | ||||| | |
migration/0-18 [000] d..1. 527287.084668: start: 0000, stop: 007f, status: 0000000000007f80
migration/128-785 [128] d..1. 527287.084669: start: 0000, stop: 007f, status: 0000000000007f80

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20240125082254.424859-3-ashok.raj@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

platform/x86/intel/ifs: Gen2 Scan test support

Width of chunk related bitfields is ACTIVATE_SCAN and SCAN_STATUS MSRs
are different in newer IFS generation compared to gen0.

Make changes to scan test flow such that MSRs are populated
appropriately based on the generation supported by hardware.

Account for the 8/16 bit MSR bitfield width differences between gen0 and
newer generations for the scan test trace event too.

Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Link: https://lore.kernel.org/r/20231005195137.3117166-5-jithu.joseph@intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

trace: platform/x86/intel/ifs: Add trace point to track Intel IFS operations

Add tracing support which may be useful for debugging systems that fail to complete
In Field Scan tests.

Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220506225410.1652287-11-tony.luck@intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>