linux.git/drivers/crypto/intel/qat, branch v6.6

crypto: qat - fix crypto capability detection for 4xxx

2023-08-25T10:46:55+00:00

When extending the capability detection logic for 4xxx devices the
SMx algorithms were accidentally missed.
Enable these SMx capabilities by default for QAT GEN4 devices.

Check for device variants where the SMx algorithms are explicitly
disabled by the GEN4 hardware. This is indicated in fusectl1
register.
Mask out SM3 and SM4 based on a bit specific to those algorithms.
Mask out SM2 if the PKE slice is not present.

Fixes: 4b44d28c715d ("crypto: qat - extend crypto capability detection for 4xxx")
Signed-off-by: Adam Guerin 
Reviewed-by: Giovanni Cabiddu 
Reviewed-by: Fiona Trahe 
Signed-off-by: Herbert Xu

crypto: qat - Remove unused function declarations

2023-08-18T09:01:09+00:00

Commit d8cba25d2c68 ("crypto: qat - Intel(R) QAT driver framework")
declared but never implemented these functions.

Signed-off-by: Yue Haibing 
Acked-by: Giovanni Cabiddu 
Signed-off-by: Herbert Xu

crypto: qat - use kfree_sensitive instead of memset/kfree()

2023-08-11T11:19:27+00:00

Use kfree_sensitive() instead of memset() and kfree().

Signed-off-by: Yang Yingliang 
Acked-by: Giovanni Cabiddu 
Signed-off-by: Herbert Xu

crypto: qat - replace the if statement with min()

2023-07-20T10:16:23+00:00

Mark UWORD_CPYBUF_SIZE with U suffix to make its type the same
with words_num. Then replace the if statement with min() in
qat_uclo_wr_uimage_raw_page() to make code shorter.

Reviewed-by: Andy Shevchenko 
Signed-off-by: You Kangren 
Signed-off-by: Herbert Xu

crypto: qat - add heartbeat counters check

2023-07-20T10:16:23+00:00

A firmware update for QAT GEN2 changed the format of a data
structure used to report the heartbeat counters.

To support all firmware versions, extend the heartbeat logic
with an algorithm that detects the number of counters returned
by firmware. The algorithm detects the number of counters to
be used (and size of the corresponding data structure) by the
comparison the expected size of the data in memory, with the data
which was written by the firmware.

Firmware detection is done one time during the first read of heartbeat
debugfs file to avoid increasing the time needed to load the module.

Signed-off-by: Damian Muszynski 
Reviewed-by: Giovanni Cabiddu 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Herbert Xu

crypto: qat - add heartbeat feature

2023-07-20T10:16:23+00:00

Under some circumstances, firmware in the QAT devices could become
unresponsive. The Heartbeat feature provides a mechanism to detect
unresponsive devices.

The QAT FW periodically writes to memory a set of counters that allow
to detect the liveness of a device. This patch adds logic to enable
the reporting of those counters, analyze them and report if a device
is alive or not.

In particular this adds
  (1) heartbeat enabling, reading and detection logic
  (2) reporting of heartbeat status and configuration via debugfs
  (3) documentation for the newly created sysfs entries
  (4) configuration of FW settings related to heartbeat, e.g. tick period
  (5) logic to convert time in ms (provided by the user) to clock ticks

This patch introduces a new folder in debugfs called heartbeat with the
following attributes:
 - status
 - queries_sent
 - queries_failed
 - config

All attributes except config are reading only. In particular:
 - `status` file returns 0 when device is operational and -1 otherwise.
 - `queries_sent` returns the total number of heartbeat queries sent.
 - `queries_failed` returns the total number of heartbeat queries failed.
 - `config` allows to adjust the frequency at which the firmware writes
   counters to memory. This period is given in milliseconds and it is
   fixed for GEN4 devices.

Signed-off-by: Damian Muszynski 
Reviewed-by: Giovanni Cabiddu 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Herbert Xu

crypto: qat - add measure clock frequency

2023-07-20T10:16:11+00:00

The QAT hardware does not expose a mechanism to report its clock
frequency. This is required to implement the Heartbeat feature.

Add a clock measuring algorithm that estimates the frequency by
comparing the internal timestamp counter incremented by the firmware
with the time measured by the kernel.
The frequency value is only used internally and not exposed to
the user.

Signed-off-by: Damian Muszynski 
Reviewed-by: Giovanni Cabiddu 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Herbert Xu

crypto: qat - drop obsolete heartbeat interface

2023-07-20T10:16:01+00:00

Drop legacy heartbeat interface from FW API as it is no longer used.

Signed-off-by: Damian Muszynski 
Reviewed-by: Giovanni Cabiddu 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Herbert Xu

crypto: qat - add internal timer for qat 4xxx

2023-07-20T10:16:01+00:00

The power management feature in QAT 4xxx devices can disable clock
sources used to implement timers. Because of that, the firmware needs to
get an external reliable source of time.

Add a kernel delayed work that periodically sends an event to the
firmware. This is triggered every 200ms. At each execution, the driver
sends a sync request to the firmware reporting the current timestamp
counter value.

This is a pre-requisite for enabling the heartbeat, telemetry and
rate limiting features.

Signed-off-by: Damian Muszynski 
Reviewed-by: Giovanni Cabiddu 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Herbert Xu

crypto: qat - add fw_counters debugfs file

2023-07-20T10:15:30+00:00

Expose FW counters statistics by providing the "fw_counters" file
under debugfs. Currently the statistics include the number of
requests sent to the FW and the number of responses received
from the FW for each Acceleration Engine, for all the QAT product
line.

This patch is based on earlier work done by Marco Chiappero.

Co-developed-by: Adam Guerin 
Signed-off-by: Adam Guerin 
Signed-off-by: Lucas Segarra Fernandez 
Reviewed-by: Giovanni Cabiddu 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Herbert Xu