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                 dev_err(&GET_DEV(accel_dev), "Failed to load firmware %s\n",
  64                         hw_device->fw_name);
  65                 return -EFAULT;
  66         }
  67
  68         uof_size = loader_data->uof_fw->size;
  69         uof_addr = (void *)loader_data->uof_fw->data;
  70         if (qat_uclo_map_uof_obj(loader_data->fw_loader, uof_addr, uof_size)) {
  71                 dev_err(&GET_DEV(accel_dev), "Failed to map UOF\n");
  72                 goto out_err;
  73         }
  74         if (qat_uclo_wr_all_uimage(loader_data->fw_loader)) {
  75                 dev_err(&GET_DEV(accel_dev), "Failed to map UOF\n");
  76                 goto out_err;
  77         }
  78         return 0;
  79
  80 out_err:
  81         adf_ae_fw_release(accel_dev);
  82         return -EFAULT;
  83 }
  84
  85 void adf_ae_fw_release(struct adf_accel_dev *accel_dev)
  86 {
  87         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
  88
  89         qat_uclo_del_uof_obj(loader_data->fw_loader);
  90         qat_hal_deinit(loader_data->fw_loader);
  91         release_firmware(loader_data->uof_fw);
  92         loader_data->uof_fw = NULL;
  93         loader_data->fw_loader = NULL;
  94 }
  95
  96 int adf_ae_start(struct adf_accel_dev *accel_dev)
  97 {
  98         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
  99         struct adf_hw_device_data *hw_data = accel_dev->hw_device;
 100         uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
 101
 102         for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
 103                 if (hw_data->ae_mask & (1 << ae)) {
 104                         qat_hal_start(loader_data->fw_loader, ae, 0xFF);
 105                         ae_ctr++;
 106                 }
 107         }
 108         dev_info(&GET_DEV(accel_dev),
 109                  "qat_dev%d started %d acceleration engines\n",
 110                  accel_dev->accel_id, ae_ctr);
 111         return 0;
 112 }
 113
 114 int adf_ae_stop(struct adf_accel_dev *accel_dev)
 115 {
 116         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 117         struct adf_hw_device_data *hw_data = accel_dev->hw_device;
 118         uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
 119
 120         for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
 121                 if (hw_data->ae_mask & (1 << ae)) {
 122                         qat_hal_stop(loader_data->fw_loader, ae, 0xFF);
 123                         ae_ctr++;
 124                 }
 125         }
 126         dev_info(&GET_DEV(accel_dev),
 127                  "qat_dev%d stopped %d acceleration engines\n",
 128                  accel_dev->accel_id, ae_ctr);
 129         return 0;
 130 }
 131
 132 static int adf_ae_reset(struct adf_accel_dev *accel_dev, int ae)
 133 {
 134         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 135
 136         qat_hal_reset(loader_data->fw_loader);
 137         if (qat_hal_clr_reset(loader_data->fw_loader))
 138                 return -EFAULT;
 139
 140         return 0;
 141 }
 142
 143 int adf_ae_init(struct adf_accel_dev *accel_dev)
 144 {
 145         struct adf_fw_loader_data *loader_data;
 146
 147         loader_data = kzalloc(sizeof(*loader_data), GFP_KERNEL);
 148         if (!loader_data)
 149                 return -ENOMEM;
 150
 151         accel_dev->fw_loader = loader_data;
 152         if (qat_hal_init(accel_dev)) {
 153                 dev_err(&GET_DEV(accel_dev), "Failed to init the AEs\n");
 154                 kfree(loader_data);
 155                 return -EFAULT;
 156         }
 157         if (adf_ae_reset(accel_dev, 0)) {
 158                 dev_err(&GET_DEV(accel_dev), "Failed to reset the AEs\n");
 159                 qat_hal_deinit(loader_data->fw_loader);
 160                 kfree(loader_data);
 161                 return -EFAULT;
 162         }
 163         return 0;
 164 }
 165
 166 int adf_ae_shutdown(struct adf_accel_dev *accel_dev)
 167 {
 168         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 169
 170         qat_hal_deinit(loader_data->fw_loader);
 171         kfree(accel_dev->fw_loader);
 172         accel_dev->fw_loader = NULL;
 173         return 0;
 174 }