drivers/crypto/qat/qat_common/adf_accel_engine.c

   1 /*
   2   This file is provided under a dual BSD/GPLv2 license.  When using or
   3   redistributing this file, you may do so under either license.
   4
   5   GPL LICENSE SUMMARY
   6   Copyright(c) 2014 Intel Corporation.
   7   This program is free software; you can redistribute it and/or modify
   8   it under the terms of version 2 of the GNU General Public License as
   9   published by the Free Software Foundation.
  10
  11   This program is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14   General Public License for more details.
  15
  16   Contact Information:
  17   qat-linux@intel.com
  18
  19   BSD LICENSE
  20   Copyright(c) 2014 Intel Corporation.
  21   Redistribution and use in source and binary forms, with or without
  22   modification, are permitted provided that the following conditions
  23   are met:
  24
  25     * Redistributions of source code must retain the above copyright
  26       notice, this list of conditions and the following disclaimer.
  27     * Redistributions in binary form must reproduce the above copyright
  28       notice, this list of conditions and the following disclaimer in
  29       the documentation and/or other materials provided with the
  30       distribution.
  31     * Neither the name of Intel Corporation nor the names of its
  32       contributors may be used to endorse or promote products derived
  33       from this software without specific prior written permission.
  34
  35   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  36   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  37   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  38   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  39   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  41   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  42   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  43   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  44   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  45   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  46 */
  47 #include <linux/firmware.h>
  48 #include <linux/pci.h>
  49 #include "adf_cfg.h"
  50 #include "adf_accel_devices.h"
  51 #include "adf_common_drv.h"
  52 #include "icp_qat_uclo.h"
  53
  54 int adf_ae_fw_load(struct adf_accel_dev *accel_dev)
  55 {
  56         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
  57         struct adf_hw_device_data *hw_device = accel_dev->hw_device;
  58         void *uof_addr;
  59         uint32_t uof_size;
  60
  61         if (request_firmware(&loader_data->uof_fw, hw_device->fw_name,
  62                              &accel_dev->accel_pci_dev.pci_dev->dev)) {
  63                 pr_err("QAT: Failed to load firmware %s\n", hw_device->fw_name);
  64                 return -EFAULT;
  65         }
  66
  67         uof_size = loader_data->uof_fw->size;
  68         uof_addr = (void *)loader_data->uof_fw->data;
  69         if (qat_uclo_map_uof_obj(loader_data->fw_loader, uof_addr, uof_size)) {
  70                 pr_err("QAT: Failed to map uof\n");
  71                 goto out_err;
  72         }
  73         if (qat_uclo_wr_all_uimage(loader_data->fw_loader)) {
  74                 pr_err("QAT: Failed to map uof\n");
  75                 goto out_err;
  76         }
  77         return 0;
  78
  79 out_err:
  80         release_firmware(loader_data->uof_fw);
  81         return -EFAULT;
  82 }
  83
  84 int adf_ae_fw_release(struct adf_accel_dev *accel_dev)
  85 {
  86         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
  87
  88         release_firmware(loader_data->uof_fw);
  89         qat_uclo_del_uof_obj(loader_data->fw_loader);
  90         qat_hal_deinit(loader_data->fw_loader);
  91         loader_data->fw_loader = NULL;
  92         return 0;
  93 }
  94
  95 int adf_ae_start(struct adf_accel_dev *accel_dev)
  96 {
  97         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
  98         struct adf_hw_device_data *hw_data = accel_dev->hw_device;
  99         uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
 100
 101         for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
 102                 if (hw_data->ae_mask & (1 << ae)) {
 103                         qat_hal_start(loader_data->fw_loader, ae, 0xFF);
 104                         ae_ctr++;
 105                 }
 106         }
 107         pr_info("QAT: qat_dev%d started %d acceleration engines\n",
 108                 accel_dev->accel_id, ae_ctr);
 109         return 0;
 110 }
 111
 112 int adf_ae_stop(struct adf_accel_dev *accel_dev)
 113 {
 114         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 115         struct adf_hw_device_data *hw_data = accel_dev->hw_device;
 116         uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
 117
 118         for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
 119                 if (hw_data->ae_mask & (1 << ae)) {
 120                         qat_hal_stop(loader_data->fw_loader, ae, 0xFF);
 121                         ae_ctr++;
 122                 }
 123         }
 124         pr_info("QAT: qat_dev%d stopped %d acceleration engines\n",
 125                 accel_dev->accel_id, ae_ctr);
 126         return 0;
 127 }
 128
 129 static int adf_ae_reset(struct adf_accel_dev *accel_dev, int ae)
 130 {
 131         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 132
 133         qat_hal_reset(loader_data->fw_loader);
 134         if (qat_hal_clr_reset(loader_data->fw_loader))
 135                 return -EFAULT;
 136
 137         return 0;
 138 }
 139
 140 int adf_ae_init(struct adf_accel_dev *accel_dev)
 141 {
 142         struct adf_fw_loader_data *loader_data;
 143
 144         loader_data = kzalloc(sizeof(*loader_data), GFP_KERNEL);
 145         if (!loader_data)
 146                 return -ENOMEM;
 147
 148         accel_dev->fw_loader = loader_data;
 149         if (qat_hal_init(accel_dev)) {
 150                 pr_err("QAT: Failed to init the AEs\n");
 151                 kfree(loader_data);
 152                 return -EFAULT;
 153         }
 154         if (adf_ae_reset(accel_dev, 0)) {
 155                 pr_err("QAT: Failed to reset the AEs\n");
 156                 qat_hal_deinit(loader_data->fw_loader);
 157                 kfree(loader_data);
 158                 return -EFAULT;
 159         }
 160         return 0;
 161 }
 162
 163 int adf_ae_shutdown(struct adf_accel_dev *accel_dev)
 164 {
 165         kfree(accel_dev->fw_loader);
 166         accel_dev->fw_loader = NULL;
 167         return 0;
 168 }