root/drivers/crypto/qat/qat_common/adf_accel_engine.c

DEFINITIONS

1. adf_ae_fw_load
2. adf_ae_fw_release
3. adf_ae_start
4. adf_ae_stop
5. adf_ae_reset
6. adf_ae_init
7. adf_ae_shutdown

   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         if (qat_uclo_wr_mimage(loader_data->fw_loader, mmp_addr, mmp_size)) {
  82                 dev_err(&GET_DEV(accel_dev), "Failed to load MMP\n");
  83                 goto out_err;
  84         }
  85         if (qat_uclo_map_obj(loader_data->fw_loader, uof_addr, uof_size)) {
  86                 dev_err(&GET_DEV(accel_dev), "Failed to map FW\n");
  87                 goto out_err;
  88         }
  89         if (qat_uclo_wr_all_uimage(loader_data->fw_loader)) {
  90                 dev_err(&GET_DEV(accel_dev), "Failed to load UOF\n");
  91                 goto out_err;
  92         }
  93         return 0;
  94 
  95 out_err:
  96         adf_ae_fw_release(accel_dev);
  97         return -EFAULT;
  98 }
  99 
 100 void adf_ae_fw_release(struct adf_accel_dev *accel_dev)
 101 {
 102         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 103         struct adf_hw_device_data *hw_device = accel_dev->hw_device;
 104 
 105         if (!hw_device->fw_name)
 106                 return;
 107 
 108         qat_uclo_del_uof_obj(loader_data->fw_loader);
 109         qat_hal_deinit(loader_data->fw_loader);
 110         release_firmware(loader_data->uof_fw);
 111         release_firmware(loader_data->mmp_fw);
 112         loader_data->uof_fw = NULL;
 113         loader_data->mmp_fw = NULL;
 114         loader_data->fw_loader = NULL;
 115 }
 116 
 117 int adf_ae_start(struct adf_accel_dev *accel_dev)
 118 {
 119         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 120         struct adf_hw_device_data *hw_data = accel_dev->hw_device;
 121         uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
 122 
 123         if (!hw_data->fw_name)
 124                 return 0;
 125 
 126         for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
 127                 if (hw_data->ae_mask & (1 << ae)) {
 128                         qat_hal_start(loader_data->fw_loader, ae, 0xFF);
 129                         ae_ctr++;
 130                 }
 131         }
 132         dev_info(&GET_DEV(accel_dev),
 133                  "qat_dev%d started %d acceleration engines\n",
 134                  accel_dev->accel_id, ae_ctr);
 135         return 0;
 136 }
 137 
 138 int adf_ae_stop(struct adf_accel_dev *accel_dev)
 139 {
 140         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 141         struct adf_hw_device_data *hw_data = accel_dev->hw_device;
 142         uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
 143 
 144         if (!hw_data->fw_name)
 145                 return 0;
 146 
 147         for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
 148                 if (hw_data->ae_mask & (1 << ae)) {
 149                         qat_hal_stop(loader_data->fw_loader, ae, 0xFF);
 150                         ae_ctr++;
 151                 }
 152         }
 153         dev_info(&GET_DEV(accel_dev),
 154                  "qat_dev%d stopped %d acceleration engines\n",
 155                  accel_dev->accel_id, ae_ctr);
 156         return 0;
 157 }
 158 
 159 static int adf_ae_reset(struct adf_accel_dev *accel_dev, int ae)
 160 {
 161         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 162 
 163         qat_hal_reset(loader_data->fw_loader);
 164         if (qat_hal_clr_reset(loader_data->fw_loader))
 165                 return -EFAULT;
 166 
 167         return 0;
 168 }
 169 
 170 int adf_ae_init(struct adf_accel_dev *accel_dev)
 171 {
 172         struct adf_fw_loader_data *loader_data;
 173         struct adf_hw_device_data *hw_device = accel_dev->hw_device;
 174 
 175         if (!hw_device->fw_name)
 176                 return 0;
 177 
 178         loader_data = kzalloc(sizeof(*loader_data), GFP_KERNEL);
 179         if (!loader_data)
 180                 return -ENOMEM;
 181 
 182         accel_dev->fw_loader = loader_data;
 183         if (qat_hal_init(accel_dev)) {
 184                 dev_err(&GET_DEV(accel_dev), "Failed to init the AEs\n");
 185                 kfree(loader_data);
 186                 return -EFAULT;
 187         }
 188         if (adf_ae_reset(accel_dev, 0)) {
 189                 dev_err(&GET_DEV(accel_dev), "Failed to reset the AEs\n");
 190                 qat_hal_deinit(loader_data->fw_loader);
 191                 kfree(loader_data);
 192                 return -EFAULT;
 193         }
 194         return 0;
 195 }
 196 
 197 int adf_ae_shutdown(struct adf_accel_dev *accel_dev)
 198 {
 199         struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
 200         struct adf_hw_device_data *hw_device = accel_dev->hw_device;
 201 
 202         if (!hw_device->fw_name)
 203                 return 0;
 204 
 205         qat_hal_deinit(loader_data->fw_loader);
 206         kfree(accel_dev->fw_loader);
 207         accel_dev->fw_loader = NULL;
 208         return 0;
 209 }