--- /dev/null
+/*
+ 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/module.h>
+#include <linux/slab.h>
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_transport.h"
+#include "adf_cfg.h"
+#include "adf_cfg_strings.h"
+#include "qat_crypto.h"
+#include "icp_qat_fw.h"
+
+#define SEC ADF_KERNEL_SEC
+
+static struct service_hndl qat_crypto;
+
+void qat_crypto_put_instance(struct qat_crypto_instance *inst)
+{
+ if (atomic_sub_return(1, &inst->refctr) == 0)
+ adf_dev_put(inst->accel_dev);
+}
+
+static int qat_crypto_free_instances(struct adf_accel_dev *accel_dev)
+{
+ struct qat_crypto_instance *inst;
+ struct list_head *list_ptr, *tmp;
+ int i;
+
+ list_for_each_safe(list_ptr, tmp, &accel_dev->crypto_list) {
+ inst = list_entry(list_ptr, struct qat_crypto_instance, list);
+
+ for (i = 0; i < atomic_read(&inst->refctr); i++)
+ qat_crypto_put_instance(inst);
+
+ if (inst->sym_tx)
+ adf_remove_ring(inst->sym_tx);
+
+ if (inst->sym_rx)
+ adf_remove_ring(inst->sym_rx);
+
+ if (inst->pke_tx)
+ adf_remove_ring(inst->pke_tx);
+
+ if (inst->pke_rx)
+ adf_remove_ring(inst->pke_rx);
+
+ if (inst->rnd_tx)
+ adf_remove_ring(inst->rnd_tx);
+
+ if (inst->rnd_rx)
+ adf_remove_ring(inst->rnd_rx);
+
+ list_del(list_ptr);
+ kfree(inst);
+ }
+ return 0;
+}
+
+struct qat_crypto_instance *qat_crypto_get_instance_node(int node)
+{
+ struct adf_accel_dev *accel_dev = NULL;
+ struct qat_crypto_instance *inst_best = NULL;
+ struct list_head *itr;
+ unsigned long best = ~0;
+
+ list_for_each(itr, adf_devmgr_get_head()) {
+ accel_dev = list_entry(itr, struct adf_accel_dev, list);
+ if ((node == dev_to_node(&GET_DEV(accel_dev)) ||
+ dev_to_node(&GET_DEV(accel_dev)) < 0) &&
+ adf_dev_started(accel_dev))
+ break;
+ accel_dev = NULL;
+ }
+ if (!accel_dev) {
+ pr_err("QAT: Could not find a device on node %d\n", node);
+ accel_dev = adf_devmgr_get_first();
+ }
+ if (!accel_dev || !adf_dev_started(accel_dev))
+ return NULL;
+
+ list_for_each(itr, &accel_dev->crypto_list) {
+ struct qat_crypto_instance *inst;
+ unsigned long cur;
+
+ inst = list_entry(itr, struct qat_crypto_instance, list);
+ cur = atomic_read(&inst->refctr);
+ if (best > cur) {
+ inst_best = inst;
+ best = cur;
+ }
+ }
+ if (inst_best) {
+ if (atomic_add_return(1, &inst_best->refctr) == 1) {
+ if (adf_dev_get(accel_dev)) {
+ atomic_dec(&inst_best->refctr);
+ dev_err(&GET_DEV(accel_dev),
+ "Could not increment dev refctr\n");
+ return NULL;
+ }
+ }
+ }
+ return inst_best;
+}
+
+static int qat_crypto_create_instances(struct adf_accel_dev *accel_dev)
+{
+ int i;
+ unsigned long bank;
+ unsigned long num_inst, num_msg_sym, num_msg_asym;
+ int msg_size;
+ struct qat_crypto_instance *inst;
+ char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES];
+ char val[ADF_CFG_MAX_VAL_LEN_IN_BYTES];
+
+ INIT_LIST_HEAD(&accel_dev->crypto_list);
+ strlcpy(key, ADF_NUM_CY, sizeof(key));
+
+ if (adf_cfg_get_param_value(accel_dev, SEC, key, val))
+ return -EFAULT;
+
+ if (kstrtoul(val, 0, &num_inst))
+ return -EFAULT;
+
+ for (i = 0; i < num_inst; i++) {
+ inst = kzalloc_node(sizeof(*inst), GFP_KERNEL,
+ dev_to_node(&GET_DEV(accel_dev)));
+ if (!inst)
+ goto err;
+
+ list_add_tail(&inst->list, &accel_dev->crypto_list);
+ inst->id = i;
+ atomic_set(&inst->refctr, 0);
+ inst->accel_dev = accel_dev;
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_BANK_NUM, i);
+ if (adf_cfg_get_param_value(accel_dev, SEC, key, val))
+ goto err;
+
+ if (kstrtoul(val, 10, &bank))
+ goto err;
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_SIZE, i);
+ if (adf_cfg_get_param_value(accel_dev, SEC, key, val))
+ goto err;
+
+ if (kstrtoul(val, 10, &num_msg_sym))
+ goto err;
+ num_msg_sym = num_msg_sym >> 1;
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_SIZE, i);
+ if (adf_cfg_get_param_value(accel_dev, SEC, key, val))
+ goto err;
+
+ if (kstrtoul(val, 10, &num_msg_asym))
+ goto err;
+ num_msg_asym = num_msg_asym >> 1;
+
+ msg_size = ICP_QAT_FW_REQ_DEFAULT_SZ;
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_TX, i);
+ if (adf_create_ring(accel_dev, SEC, bank, num_msg_sym,
+ msg_size, key, NULL, 0, &inst->sym_tx))
+ goto err;
+
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_RND_TX, i);
+ if (adf_create_ring(accel_dev, SEC, bank, num_msg_asym,
+ msg_size, key, NULL, 0, &inst->rnd_tx))
+ goto err;
+
+ msg_size = msg_size >> 1;
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_TX, i);
+ if (adf_create_ring(accel_dev, SEC, bank, num_msg_asym,
+ msg_size, key, NULL, 0, &inst->pke_tx))
+ goto err;
+
+ msg_size = ICP_QAT_FW_RESP_DEFAULT_SZ;
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_RX, i);
+ if (adf_create_ring(accel_dev, SEC, bank, num_msg_sym,
+ msg_size, key, qat_alg_callback, 0,
+ &inst->sym_rx))
+ goto err;
+
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_RND_RX, i);
+ if (adf_create_ring(accel_dev, SEC, bank, num_msg_asym,
+ msg_size, key, qat_alg_callback, 0,
+ &inst->rnd_rx))
+ goto err;
+
+ snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_RX, i);
+ if (adf_create_ring(accel_dev, SEC, bank, num_msg_asym,
+ msg_size, key, qat_alg_callback, 0,
+ &inst->pke_rx))
+ goto err;
+ }
+ return 0;
+err:
+ qat_crypto_free_instances(accel_dev);
+ return -ENOMEM;
+}
+
+static int qat_crypto_init(struct adf_accel_dev *accel_dev)
+{
+ if (qat_crypto_create_instances(accel_dev))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int qat_crypto_shutdown(struct adf_accel_dev *accel_dev)
+{
+ return qat_crypto_free_instances(accel_dev);
+}
+
+static int qat_crypto_event_handler(struct adf_accel_dev *accel_dev,
+ enum adf_event event)
+{
+ int ret;
+
+ switch (event) {
+ case ADF_EVENT_INIT:
+ ret = qat_crypto_init(accel_dev);
+ break;
+ case ADF_EVENT_SHUTDOWN:
+ ret = qat_crypto_shutdown(accel_dev);
+ break;
+ case ADF_EVENT_RESTARTING:
+ case ADF_EVENT_RESTARTED:
+ case ADF_EVENT_START:
+ case ADF_EVENT_STOP:
+ default:
+ ret = 0;
+ }
+ return ret;
+}
+
+int qat_crypto_register(void)
+{
+ memset(&qat_crypto, 0, sizeof(qat_crypto));
+ qat_crypto.event_hld = qat_crypto_event_handler;
+ qat_crypto.name = "qat_crypto";
+ return adf_service_register(&qat_crypto);
+}
+
+int qat_crypto_unregister(void)
+{
+ return adf_service_unregister(&qat_crypto);
+}
Code Review / kvmfornfv.git / blobdiff