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, *mmp_addr;
  59         u32 uof_size, mmp_size;
  60
  61         if (!hw_device->fw_name)
  62                 return 0;
  63
  64         if (request_firmware(&loader_data->mmp_fw, hw_device->fw_mmp_name,
  65                              &accel_dev->accel_pci_dev.pci_dev->dev)) {
  66                 dev_err(&GET_DEV(accel_dev), "Failed to load MMP firmware %s\n",
  67                         hw_device->fw_mmp_name);
  68                 return -EFAULT;
  69         }
  70         if (request_firmware(&loader_data->uof_fw, hw_device->fw_name,
  71                              &accel_dev->accel_pci_dev.pci_dev->dev)) {
  72                 dev_err(&GET_DEV(accel_dev), "Failed to load UOF firmware %s\n",
  73                         hw_device->fw_name);
  74                 goto out_err;
  75         }
  76
  77         uof_size = loader_data->uof_fw->size;
  78         uof_addr = (void *)loader_data->uof_fw->data;
  79         mmp_size = loader_data->mmp_fw->size;
  80         mmp_addr = (void *)loader_data->mmp_fw->data;
  81         qat_uclo_wr_mimage(loader_data->fw_loader, mmp_addr, mmp_size);
  82         if (qat_uclo_map_uof_obj(loader_data->fw_loader, uof_addr, uof_size)) {
  83                 dev_err(&GET_DEV(accel_dev), "Failed to map UOF\n");
  84                 goto out_err;
  85         }
  86         if (qat_uclo_wr_all_uimage(loader_data->fw_loader)) {
  87                 dev_err(&GET_DEV(accel_dev), "Failed to load UOF\n");
  88                 goto out_err;
  89         }
  90         return 0;
  91
  92 out_err:
  93         adf_ae_fw_release(accel_dev);
  94         return -EFAULT;
  95 }
  96
  97 void adf_ae_fw_release(struct adf_accel_dev *accel_dev)
  98 {
  99         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 100         struct adf_hw_device_data *hw_device = accel_dev->hw_device;
 101
 102         if (!hw_device->fw_name)
 103                 return;
 104
 105         qat_uclo_del_uof_obj(loader_data->fw_loader);
 106         qat_hal_deinit(loader_data->fw_loader);
 107         release_firmware(loader_data->uof_fw);
 108         release_firmware(loader_data->mmp_fw);
 109         loader_data->uof_fw = NULL;
 110         loader_data->mmp_fw = NULL;
 111         loader_data->fw_loader = NULL;
 112 }
 113
 114 int adf_ae_start(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         if (!hw_data->fw_name)
 121                 return 0;
 122
 123         for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
 124                 if (hw_data->ae_mask & (1 << ae)) {
 125                         qat_hal_start(loader_data->fw_loader, ae, 0xFF);
 126                         ae_ctr++;
 127                 }
 128         }
 129         dev_info(&GET_DEV(accel_dev),
 130                  "qat_dev%d started %d acceleration engines\n",
 131                  accel_dev->accel_id, ae_ctr);
 132         return 0;
 133 }
 134
 135 int adf_ae_stop(struct adf_accel_dev *accel_dev)
 136 {
 137         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 138         struct adf_hw_device_data *hw_data = accel_dev->hw_device;
 139         uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
 140
 141         if (!hw_data->fw_name)
 142                 return 0;
 143
 144         for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
 145                 if (hw_data->ae_mask & (1 << ae)) {
 146                         qat_hal_stop(loader_data->fw_loader, ae, 0xFF);
 147                         ae_ctr++;
 148                 }
 149         }
 150         dev_info(&GET_DEV(accel_dev),
 151                  "qat_dev%d stopped %d acceleration engines\n",
 152                  accel_dev->accel_id, ae_ctr);
 153         return 0;
 154 }
 155
 156 static int adf_ae_reset(struct adf_accel_dev *accel_dev, int ae)
 157 {
 158         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 159
 160         qat_hal_reset(loader_data->fw_loader);
 161         if (qat_hal_clr_reset(loader_data->fw_loader))
 162                 return -EFAULT;
 163
 164         return 0;
 165 }
 166
 167 int adf_ae_init(struct adf_accel_dev *accel_dev)
 168 {
 169         struct adf_fw_loader_data *loader_data;
 170         struct adf_hw_device_data *hw_device = accel_dev->hw_device;
 171
 172         if (!hw_device->fw_name)
 173                 return 0;
 174
 175         loader_data = kzalloc(sizeof(*loader_data), GFP_KERNEL);
 176         if (!loader_data)
 177                 return -ENOMEM;
 178
 179         accel_dev->fw_loader = loader_data;
 180         if (qat_hal_init(accel_dev)) {
 181                 dev_err(&GET_DEV(accel_dev), "Failed to init the AEs\n");
 182                 kfree(loader_data);
 183                 return -EFAULT;
 184         }
 185         if (adf_ae_reset(accel_dev, 0)) {
 186                 dev_err(&GET_DEV(accel_dev), "Failed to reset the AEs\n");
 187                 qat_hal_deinit(loader_data->fw_loader);
 188                 kfree(loader_data);
 189                 return -EFAULT;
 190         }
 191         return 0;
 192 }
 193
 194 int adf_ae_shutdown(struct adf_accel_dev *accel_dev)
 195 {
 196         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 197         struct adf_hw_device_data *hw_device = accel_dev->hw_device;
 198
 199         if (!hw_device->fw_name)
 200                 return 0;
 201
 202         qat_hal_deinit(loader_data->fw_loader);
 203         kfree(accel_dev->fw_loader);
 204         accel_dev->fw_loader = NULL;
 205         return 0;
 206 }