diff options
Diffstat (limited to 'drivers/crypto/qat/qat_common/adf_accel_engine.c')
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_accel_engine.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/drivers/crypto/qat/qat_common/adf_accel_engine.c b/drivers/crypto/qat/qat_common/adf_accel_engine.c new file mode 100644 index 000000000000..c77453b900a3 --- /dev/null +++ b/drivers/crypto/qat/qat_common/adf_accel_engine.c @@ -0,0 +1,168 @@ +/* + This file is provided under a dual BSD/GPLv2 license. When using or + redistributing this file, you may do so under either license. + + GPL LICENSE SUMMARY + Copyright(c) 2014 Intel Corporation. + This program is free software; you can redistribute it and/or modify + it under the terms of version 2 of the GNU General Public License as + published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + Contact Information: + qat-linux@intel.com + + BSD LICENSE + Copyright(c) 2014 Intel Corporation. + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + * Neither the name of Intel Corporation nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +#include <linux/firmware.h> +#include <linux/pci.h> +#include "adf_cfg.h" +#include "adf_accel_devices.h" +#include "adf_common_drv.h" +#include "icp_qat_uclo.h" + +int adf_ae_fw_load(struct adf_accel_dev *accel_dev) +{ + struct adf_fw_loader_data *loader_data = accel_dev->fw_loader; + struct adf_hw_device_data *hw_device = accel_dev->hw_device; + void *uof_addr; + uint32_t uof_size; + + if (request_firmware(&loader_data->uof_fw, hw_device->fw_name, + &accel_dev->accel_pci_dev.pci_dev->dev)) { + pr_err("QAT: Failed to load firmware %s\n", hw_device->fw_name); + return -EFAULT; + } + + uof_size = loader_data->uof_fw->size; + uof_addr = (void *)loader_data->uof_fw->data; + if (qat_uclo_map_uof_obj(loader_data->fw_loader, uof_addr, uof_size)) { + pr_err("QAT: Failed to map UOF\n"); + goto out_err; + } + if (qat_uclo_wr_all_uimage(loader_data->fw_loader)) { + pr_err("QAT: Failed to map UOF\n"); + goto out_err; + } + return 0; + +out_err: + release_firmware(loader_data->uof_fw); + return -EFAULT; +} + +int adf_ae_fw_release(struct adf_accel_dev *accel_dev) +{ + struct adf_fw_loader_data *loader_data = accel_dev->fw_loader; + + release_firmware(loader_data->uof_fw); + qat_uclo_del_uof_obj(loader_data->fw_loader); + qat_hal_deinit(loader_data->fw_loader); + loader_data->fw_loader = NULL; + return 0; +} + +int adf_ae_start(struct adf_accel_dev *accel_dev) +{ + struct adf_fw_loader_data *loader_data = accel_dev->fw_loader; + struct adf_hw_device_data *hw_data = accel_dev->hw_device; + uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev); + + for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) { + if (hw_data->ae_mask & (1 << ae)) { + qat_hal_start(loader_data->fw_loader, ae, 0xFF); + ae_ctr++; + } + } + pr_info("QAT: qat_dev%d started %d acceleration engines\n", + accel_dev->accel_id, ae_ctr); + return 0; +} + +int adf_ae_stop(struct adf_accel_dev *accel_dev) +{ + struct adf_fw_loader_data *loader_data = accel_dev->fw_loader; + struct adf_hw_device_data *hw_data = accel_dev->hw_device; + uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev); + + for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) { + if (hw_data->ae_mask & (1 << ae)) { + qat_hal_stop(loader_data->fw_loader, ae, 0xFF); + ae_ctr++; + } + } + pr_info("QAT: qat_dev%d stopped %d acceleration engines\n", + accel_dev->accel_id, ae_ctr); + return 0; +} + +static int adf_ae_reset(struct adf_accel_dev *accel_dev, int ae) +{ + struct adf_fw_loader_data *loader_data = accel_dev->fw_loader; + + qat_hal_reset(loader_data->fw_loader); + if (qat_hal_clr_reset(loader_data->fw_loader)) + return -EFAULT; + + return 0; +} + +int adf_ae_init(struct adf_accel_dev *accel_dev) +{ + struct adf_fw_loader_data *loader_data; + + loader_data = kzalloc(sizeof(*loader_data), GFP_KERNEL); + if (!loader_data) + return -ENOMEM; + + accel_dev->fw_loader = loader_data; + if (qat_hal_init(accel_dev)) { + pr_err("QAT: Failed to init the AEs\n"); + kfree(loader_data); + return -EFAULT; + } + if (adf_ae_reset(accel_dev, 0)) { + pr_err("QAT: Failed to reset the AEs\n"); + qat_hal_deinit(loader_data->fw_loader); + kfree(loader_data); + return -EFAULT; + } + return 0; +} + +int adf_ae_shutdown(struct adf_accel_dev *accel_dev) +{ + kfree(accel_dev->fw_loader); + accel_dev->fw_loader = NULL; + return 0; +} |