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[linux.git] / drivers / dma / idxd / defaults.c
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2023 Intel Corporation. All rights rsvd. */
3 #include <linux/kernel.h>
4 #include "idxd.h"
5
6 int idxd_load_iaa_device_defaults(struct idxd_device *idxd)
7 {
8         struct idxd_engine *engine;
9         struct idxd_group *group;
10         struct idxd_wq *wq;
11
12         if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
13                 return 0;
14
15         wq = idxd->wqs[0];
16
17         if (wq->state != IDXD_WQ_DISABLED)
18                 return -EPERM;
19
20         /* set mode to "dedicated" */
21         set_bit(WQ_FLAG_DEDICATED, &wq->flags);
22         wq->threshold = 0;
23
24         /* only setting up 1 wq, so give it all the wq space */
25         wq->size = idxd->max_wq_size;
26
27         /* set priority to 10 */
28         wq->priority = 10;
29
30         /* set type to "kernel" */
31         wq->type = IDXD_WQT_KERNEL;
32
33         /* set wq group to 0 */
34         group = idxd->groups[0];
35         wq->group = group;
36         group->num_wqs++;
37
38         /* set name to "iaa_crypto" */
39         memset(wq->name, 0, WQ_NAME_SIZE + 1);
40         strscpy(wq->name, "iaa_crypto", WQ_NAME_SIZE + 1);
41
42         /* set driver_name to "crypto" */
43         memset(wq->driver_name, 0, DRIVER_NAME_SIZE + 1);
44         strscpy(wq->driver_name, "crypto", DRIVER_NAME_SIZE + 1);
45
46         engine = idxd->engines[0];
47
48         /* set engine group to 0 */
49         engine->group = idxd->groups[0];
50         engine->group->num_engines++;
51
52         return 0;
53 }
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