drivers/crypto/qat/qat_common/adf_vf2pf_msg.c

   1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
   2 /* Copyright(c) 2015 - 2020 Intel Corporation */
   3 #include "adf_accel_devices.h"
   4 #include "adf_common_drv.h"
   5 #include "adf_pf2vf_msg.h"
   6
   7 /**
   8  * adf_vf2pf_init() - send init msg to PF
   9  * @accel_dev:  Pointer to acceleration VF device.
  10  *
  11  * Function sends an init messge from the VF to a PF
  12  *
  13  * Return: 0 on success, error code otherwise.
  14  */
  15 int adf_vf2pf_init(struct adf_accel_dev *accel_dev)
  16 {
  17         u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
  18                 (ADF_VF2PF_MSGTYPE_INIT << ADF_VF2PF_MSGTYPE_SHIFT));
  19
  20         if (adf_iov_putmsg(accel_dev, msg, 0)) {
  21                 dev_err(&GET_DEV(accel_dev),
  22                         "Failed to send Init event to PF\n");
  23                 return -EFAULT;
  24         }
  25         set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
  26         return 0;
  27 }
  28 EXPORT_SYMBOL_GPL(adf_vf2pf_init);
  29
  30 /**
  31  * adf_vf2pf_shutdown() - send shutdown msg to PF
  32  * @accel_dev:  Pointer to acceleration VF device.
  33  *
  34  * Function sends a shutdown messge from the VF to a PF
  35  *
  36  * Return: void
  37  */
  38 void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev)
  39 {
  40         u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
  41             (ADF_VF2PF_MSGTYPE_SHUTDOWN << ADF_VF2PF_MSGTYPE_SHIFT));
  42
  43         if (test_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status))
  44                 if (adf_iov_putmsg(accel_dev, msg, 0))
  45                         dev_err(&GET_DEV(accel_dev),
  46                                 "Failed to send Shutdown event to PF\n");
  47 }
  48 EXPORT_SYMBOL_GPL(adf_vf2pf_shutdown);