linux-kernel - [PATCH v2 0/3] Introduce support for QAT Dynamic Power Management

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Message-Id: <20220210133827.2366901-1-wojciech.ziemba@intel.com>
Date:   Thu, 10 Feb 2022 13:38:24 +0000
From:   Wojciech Ziemba <wojciech.ziemba@...el.com>
To:     herbert@...dor.apana.org.au
Cc:     linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        qat-linux@...el.com, Wojciech Ziemba <wojciech.ziemba@...el.com>
Subject: [PATCH v2 0/3] Introduce support for QAT Dynamic Power Management

This patch set consist of following updates:
1. Add misc workqueue for general purpose usage.
2. Move error source related CSRs from 4xxx to the wider GEN4 header
file.
3. Add support for HW QAT Power Management (PM) feature.
        This feature is enabled at init time (1) by sending an admin
message to
        the firmware, targeting the admin AE, that sets the idle time
before
        the device changes state and (2) by unmasking the PM source of
        interrupt in ERRMSK2.

        The interrupt handler is extended to handle a PM interrupt which
        is triggered by HW when a PM transition occurs. In this case,
the
        driver responds acknowledging the transaction using the HOST_MSG
        mailbox.

Changes since v1:
- Moved unmasking PM interrupts after PM interrupt source enable to
  avoid a spurious interrupt
- Fixed kbuild bot issue by moving adf_handle_pm_int() out of
  CONFIG_PCI_IOV scope
- Rename [..]_init_pm() functions to [..]_enable_pm() as the function
  needs to be called inside adf_start()


Wojciech Ziemba (3):
  crypto: qat - add misc workqueue
  crypto: qat - move and rename GEN4 error register definitions
  crypto: qat - enable power management for QAT GEN4

 .../crypto/qat/qat_4xxx/adf_4xxx_hw_data.c    |  21 +--
 .../crypto/qat/qat_4xxx/adf_4xxx_hw_data.h    |  24 ---
 drivers/crypto/qat/qat_common/Makefile        |   1 +
 .../crypto/qat/qat_common/adf_accel_devices.h |   2 +
 drivers/crypto/qat/qat_common/adf_admin.c     |  37 +++++
 .../crypto/qat/qat_common/adf_common_drv.h    |   4 +
 drivers/crypto/qat/qat_common/adf_ctl_drv.c   |   6 +
 .../crypto/qat/qat_common/adf_gen4_hw_data.h  |  14 ++
 drivers/crypto/qat/qat_common/adf_gen4_pm.c   | 137 ++++++++++++++++++
 drivers/crypto/qat/qat_common/adf_gen4_pm.h   |  44 ++++++
 drivers/crypto/qat/qat_common/adf_init.c      |   6 +
 drivers/crypto/qat/qat_common/adf_isr.c       |  42 ++++++
 .../qat/qat_common/icp_qat_fw_init_admin.h    |   1 +
 13 files changed, 306 insertions(+), 33 deletions(-)
 create mode 100644 drivers/crypto/qat/qat_common/adf_gen4_pm.c
 create mode 100644 drivers/crypto/qat/qat_common/adf_gen4_pm.h

-- 
2.29.2