linux-dev/drivers/crypto/qat/qat_common/Makefile, branch master

crypto: qat - expose device state through sysfs for 4xxx

2022-07-08T07:15:59Z

Expose the device state through an attribute in sysfs and allow to change it. This is to stop and shutdown a QAT device in order to change its configuration. The state attribute has been added to a newly created `qat` attribute group which will contain all _QAT specific_ attributes. The logic that implements the sysfs entries is part of a new file, adf_sysfs.c. This exposes an entry point to allow the driver to create attributes. The function that creates the sysfs attributes is called from the probe function of the driver and not in the state machine init function to allow the change of states even if the device is in the down state. In order to restore the device configuration between a transition from down to up, the function that configures the devices has been abstracted into the HW data structure. The `state` attribute is only exposed for qat_4xxx devices. Signed-off-by: Giovanni Cabiddu Co-developed-by: Tomasz Kowallik Signed-off-by: Tomasz Kowallik Reviewed-by: Adam Guerin Reviewed-by: Fiona Trahe Reviewed-by: Wojciech Ziemba Reviewed-by: Vladis Dronov Signed-off-by: Herbert Xu

crypto: qat - refactor submission logic

2022-05-20T05:49:17Z

All the algorithms in qat_algs.c and qat_asym_algs.c use the same pattern to submit messages to the HW queues. Move the submission loop to a new function, qat_alg_send_message(), and share it between the symmetric and the asymmetric algorithms. As part of this rework, since the number of retries before returning an error is inconsistent between the symmetric and asymmetric implementations, set it to a value that works for both (i.e. 20, was 10 in qat_algs.c and 100 in qat_asym_algs.c) In addition fix the return code reported when the HW queues are full. In that case return -ENOSPC instead of -EBUSY. Including stable in CC since (1) the error code returned if the HW queues are full is incorrect and (2) to facilitate the backport of the next fix "crypto: qat - add backlog mechanism". Cc: stable@vger.kernel.org Signed-off-by: Giovanni Cabiddu Reviewed-by: Marco Chiappero Signed-off-by: Herbert Xu

crypto: qat - enable power management for QAT GEN4

2022-02-18T05:21:09Z

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. Signed-off-by: Wojciech Ziemba Co-developed-by: Marcinx Malinowski Signed-off-by: Marcinx Malinowski Reviewed-by: Giovanni Cabiddu Reviewed-by: Marco Chiappero Signed-off-by: Herbert Xu

crypto: qat - add PFVF support to the GEN4 host driver

2021-12-24T03:18:27Z

So far PFVF support for GEN4 devices has been kept effectively disabled due to lack of support. This patch adds all the GEN4 specific logic to make PFVF fully functional on PF. Signed-off-by: Marco Chiappero Co-developed-by: Giovanni Cabiddu Signed-off-by: Giovanni Cabiddu Reviewed-by: Fiona Trahe Signed-off-by: Herbert Xu

crypto: qat - abstract PFVF messages with struct pfvf_message

2021-12-24T03:18:25Z

This implementation of the PFVF protocol was designed around the GEN2 devices and its CSR format. In order to support future generations, which come with differently sized fields, change the definition of the PFVF message and make it abstract by means of a new pfvf_message struct. Also, introduce some utilities to translate to and from the new message format and the device specific CSR format. Signed-off-by: Marco Chiappero Reviewed-by: Giovanni Cabiddu Reviewed-by: Fiona Trahe Signed-off-by: Herbert Xu

crypto: qat - reorganize PFVF code

2021-11-26T05:20:47Z

Reorganize the structure of the PFVF code by moving the content of adf_pf2vf_msg.c and adf_vf2pf_msg.c. The logic that handles high level messages has been moved to adf_pfvf_pf_msg.c and adf_pfvf_vf_msg.c. The implementation of low level communication primitives and the protocol is now included in adf_pfvf_pf_proto.c and adf_pfvf_vf_proto.c. In addition, the file adf_pf2vf_msg.h has been renamed in adf_pfvf_msg.h since it common to PF and VF and the copyright date for the touched files has been updated. Signed-off-by: Marco Chiappero Co-developed-by: Giovanni Cabiddu Signed-off-by: Giovanni Cabiddu Signed-off-by: Herbert Xu

crypto: qat - add pfvf_ops

2021-11-26T05:20:46Z

Add pfvf_ops structure to isolate PFVF related functions inside the adf_hw_device_data structure. For GEN2, the structure is populated using one of the two helper functions, adf_gen2_init_pf_pfvf_ops() or adf_gen2_init_vf_pfvf_ops(), for the PF and VF driver respectively. For the DH895XCC PF driver, the structure is populated using adf_gen2_init_pf_pfvf_ops() but some of the functions are then overwritten. Signed-off-by: Marco Chiappero Co-developed-by: Giovanni Cabiddu Signed-off-by: Giovanni Cabiddu Signed-off-by: Herbert Xu

crypto: qat - relocate PFVF PF related logic

2021-11-26T05:20:46Z

Move device specific PFVF logic related to the PF to the newly created adf_gen2_pfvf.c. This refactory is done to isolate the GEN2 PFVF code into its own file in preparation for the introduction of support for PFVF for GEN4 devices. In addition the PFVF PF logic for dh895xcc has been isolated to adf_dh895xcc_hw_data.c. Signed-off-by: Marco Chiappero Co-developed-by: Giovanni Cabiddu Signed-off-by: Giovanni Cabiddu Signed-off-by: Herbert Xu

crypto: qat - add qat_4xxx driver

2020-11-20T03:45:34Z

Add support for QAT 4xxx devices. Signed-off-by: Giovanni Cabiddu Reviewed-by: Fiona Trahe Signed-off-by: Herbert Xu

crypto: qat - fix configuration of iov threads

2020-10-30T06:34:47Z

The number of AE2FUNC_MAP registers is different in every QAT device (c62x, c3xxx and dh895xcc) although the logic and the register offsets are the same across devices. This patch separates the logic that configures the iov threads in a common function that takes as input the number of AE2FUNC_MAP registers supported by a device. The function is then added to the adf_hw_device_data structure of each device, and called with the appropriate parameters. The configure iov thread logic is added to a new file, adf_gen2_hw_data.c, that is going to contain code that is shared across QAT GEN2 devices. Signed-off-by: Giovanni Cabiddu Reviewed-by: Fiona Trahe Reviewed-by: Wojciech Ziemba Reviewed-by: Andy Shevchenko Signed-off-by: Herbert Xu