1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
|
/*
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);
}
|
