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.
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.
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.
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
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
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.
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.
47 #include <linux/module.h>
48 #include <linux/slab.h>
49 #include "adf_accel_devices.h"
50 #include "adf_common_drv.h"
51 #include "adf_transport.h"
53 #include "adf_cfg_strings.h"
54 #include "qat_crypto.h"
55 #include "icp_qat_fw.h"
57 #define SEC ADF_KERNEL_SEC
59 static struct service_hndl qat_crypto
;
61 void qat_crypto_put_instance(struct qat_crypto_instance
*inst
)
63 if (atomic_sub_return(1, &inst
->refctr
) == 0)
64 adf_dev_put(inst
->accel_dev
);
67 static int qat_crypto_free_instances(struct adf_accel_dev
*accel_dev
)
69 struct qat_crypto_instance
*inst
;
70 struct list_head
*list_ptr
, *tmp
;
73 list_for_each_safe(list_ptr
, tmp
, &accel_dev
->crypto_list
) {
74 inst
= list_entry(list_ptr
, struct qat_crypto_instance
, list
);
76 for (i
= 0; i
< atomic_read(&inst
->refctr
); i
++)
77 qat_crypto_put_instance(inst
);
80 adf_remove_ring(inst
->sym_tx
);
83 adf_remove_ring(inst
->sym_rx
);
86 adf_remove_ring(inst
->pke_tx
);
89 adf_remove_ring(inst
->pke_rx
);
92 adf_remove_ring(inst
->rnd_tx
);
95 adf_remove_ring(inst
->rnd_rx
);
103 struct qat_crypto_instance
*qat_crypto_get_instance_node(int node
)
105 struct adf_accel_dev
*accel_dev
= NULL
;
106 struct qat_crypto_instance
*inst_best
= NULL
;
107 struct list_head
*itr
;
108 unsigned long best
= ~0;
110 list_for_each(itr
, adf_devmgr_get_head()) {
111 accel_dev
= list_entry(itr
, struct adf_accel_dev
, list
);
112 if ((node
== dev_to_node(&GET_DEV(accel_dev
)) ||
113 dev_to_node(&GET_DEV(accel_dev
)) < 0) &&
114 adf_dev_started(accel_dev
))
119 pr_err("QAT: Could not find a device on node %d\n", node
);
120 accel_dev
= adf_devmgr_get_first();
122 if (!accel_dev
|| !adf_dev_started(accel_dev
))
125 list_for_each(itr
, &accel_dev
->crypto_list
) {
126 struct qat_crypto_instance
*inst
;
129 inst
= list_entry(itr
, struct qat_crypto_instance
, list
);
130 cur
= atomic_read(&inst
->refctr
);
137 if (atomic_add_return(1, &inst_best
->refctr
) == 1) {
138 if (adf_dev_get(accel_dev
)) {
139 atomic_dec(&inst_best
->refctr
);
140 dev_err(&GET_DEV(accel_dev
),
141 "Could not increment dev refctr\n");
149 static int qat_crypto_create_instances(struct adf_accel_dev
*accel_dev
)
153 unsigned long num_inst
, num_msg_sym
, num_msg_asym
;
155 struct qat_crypto_instance
*inst
;
156 char key
[ADF_CFG_MAX_KEY_LEN_IN_BYTES
];
157 char val
[ADF_CFG_MAX_VAL_LEN_IN_BYTES
];
159 INIT_LIST_HEAD(&accel_dev
->crypto_list
);
160 strlcpy(key
, ADF_NUM_CY
, sizeof(key
));
162 if (adf_cfg_get_param_value(accel_dev
, SEC
, key
, val
))
165 if (kstrtoul(val
, 0, &num_inst
))
168 for (i
= 0; i
< num_inst
; i
++) {
169 inst
= kzalloc_node(sizeof(*inst
), GFP_KERNEL
,
170 dev_to_node(&GET_DEV(accel_dev
)));
174 list_add_tail(&inst
->list
, &accel_dev
->crypto_list
);
176 atomic_set(&inst
->refctr
, 0);
177 inst
->accel_dev
= accel_dev
;
178 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_BANK_NUM
, i
);
179 if (adf_cfg_get_param_value(accel_dev
, SEC
, key
, val
))
182 if (kstrtoul(val
, 10, &bank
))
184 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_SYM_SIZE
, i
);
185 if (adf_cfg_get_param_value(accel_dev
, SEC
, key
, val
))
188 if (kstrtoul(val
, 10, &num_msg_sym
))
190 num_msg_sym
= num_msg_sym
>> 1;
191 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_ASYM_SIZE
, i
);
192 if (adf_cfg_get_param_value(accel_dev
, SEC
, key
, val
))
195 if (kstrtoul(val
, 10, &num_msg_asym
))
197 num_msg_asym
= num_msg_asym
>> 1;
199 msg_size
= ICP_QAT_FW_REQ_DEFAULT_SZ
;
200 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_SYM_TX
, i
);
201 if (adf_create_ring(accel_dev
, SEC
, bank
, num_msg_sym
,
202 msg_size
, key
, NULL
, 0, &inst
->sym_tx
))
205 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_RND_TX
, i
);
206 if (adf_create_ring(accel_dev
, SEC
, bank
, num_msg_asym
,
207 msg_size
, key
, NULL
, 0, &inst
->rnd_tx
))
210 msg_size
= msg_size
>> 1;
211 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_ASYM_TX
, i
);
212 if (adf_create_ring(accel_dev
, SEC
, bank
, num_msg_asym
,
213 msg_size
, key
, NULL
, 0, &inst
->pke_tx
))
216 msg_size
= ICP_QAT_FW_RESP_DEFAULT_SZ
;
217 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_SYM_RX
, i
);
218 if (adf_create_ring(accel_dev
, SEC
, bank
, num_msg_sym
,
219 msg_size
, key
, qat_alg_callback
, 0,
223 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_RND_RX
, i
);
224 if (adf_create_ring(accel_dev
, SEC
, bank
, num_msg_asym
,
225 msg_size
, key
, qat_alg_callback
, 0,
229 snprintf(key
, sizeof(key
), ADF_CY
"%d" ADF_RING_ASYM_RX
, i
);
230 if (adf_create_ring(accel_dev
, SEC
, bank
, num_msg_asym
,
231 msg_size
, key
, qat_alg_callback
, 0,
237 qat_crypto_free_instances(accel_dev
);
241 static int qat_crypto_init(struct adf_accel_dev
*accel_dev
)
243 if (qat_crypto_create_instances(accel_dev
))
249 static int qat_crypto_shutdown(struct adf_accel_dev
*accel_dev
)
251 return qat_crypto_free_instances(accel_dev
);
254 static int qat_crypto_event_handler(struct adf_accel_dev
*accel_dev
,
255 enum adf_event event
)
261 ret
= qat_crypto_init(accel_dev
);
263 case ADF_EVENT_SHUTDOWN
:
264 ret
= qat_crypto_shutdown(accel_dev
);
266 case ADF_EVENT_RESTARTING
:
267 case ADF_EVENT_RESTARTED
:
268 case ADF_EVENT_START
:
276 int qat_crypto_register(void)
278 memset(&qat_crypto
, 0, sizeof(qat_crypto
));
279 qat_crypto
.event_hld
= qat_crypto_event_handler
;
280 qat_crypto
.name
= "qat_crypto";
281 return adf_service_register(&qat_crypto
);
284 int qat_crypto_unregister(void)
286 return adf_service_unregister(&qat_crypto
);