net/bnxt: check access denied for HWRM commands
[dpdk.git] / drivers / crypto / scheduler / scheduler_roundrobin.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2017 Intel Corporation
3  */
4
5 #include <rte_cryptodev.h>
6 #include <rte_malloc.h>
7
8 #include "rte_cryptodev_scheduler_operations.h"
9 #include "scheduler_pmd_private.h"
10
11 struct rr_scheduler_qp_ctx {
12         struct scheduler_slave slaves[RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES];
13         uint32_t nb_slaves;
14
15         uint32_t last_enq_slave_idx;
16         uint32_t last_deq_slave_idx;
17 };
18
19 static uint16_t
20 schedule_enqueue(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops)
21 {
22         struct rr_scheduler_qp_ctx *rr_qp_ctx =
23                         ((struct scheduler_qp_ctx *)qp)->private_qp_ctx;
24         uint32_t slave_idx = rr_qp_ctx->last_enq_slave_idx;
25         struct scheduler_slave *slave = &rr_qp_ctx->slaves[slave_idx];
26         uint16_t i, processed_ops;
27
28         if (unlikely(nb_ops == 0))
29                 return 0;
30
31         for (i = 0; i < nb_ops && i < 4; i++)
32                 rte_prefetch0(ops[i]->sym->session);
33
34         processed_ops = rte_cryptodev_enqueue_burst(slave->dev_id,
35                         slave->qp_id, ops, nb_ops);
36
37         slave->nb_inflight_cops += processed_ops;
38
39         rr_qp_ctx->last_enq_slave_idx += 1;
40         rr_qp_ctx->last_enq_slave_idx %= rr_qp_ctx->nb_slaves;
41
42         return processed_ops;
43 }
44
45 static uint16_t
46 schedule_enqueue_ordering(void *qp, struct rte_crypto_op **ops,
47                 uint16_t nb_ops)
48 {
49         struct rte_ring *order_ring =
50                         ((struct scheduler_qp_ctx *)qp)->order_ring;
51         uint16_t nb_ops_to_enq = get_max_enqueue_order_count(order_ring,
52                         nb_ops);
53         uint16_t nb_ops_enqd = schedule_enqueue(qp, ops,
54                         nb_ops_to_enq);
55
56         scheduler_order_insert(order_ring, ops, nb_ops_enqd);
57
58         return nb_ops_enqd;
59 }
60
61
62 static uint16_t
63 schedule_dequeue(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops)
64 {
65         struct rr_scheduler_qp_ctx *rr_qp_ctx =
66                         ((struct scheduler_qp_ctx *)qp)->private_qp_ctx;
67         struct scheduler_slave *slave;
68         uint32_t last_slave_idx = rr_qp_ctx->last_deq_slave_idx;
69         uint16_t nb_deq_ops;
70
71         if (unlikely(rr_qp_ctx->slaves[last_slave_idx].nb_inflight_cops == 0)) {
72                 do {
73                         last_slave_idx += 1;
74
75                         if (unlikely(last_slave_idx >= rr_qp_ctx->nb_slaves))
76                                 last_slave_idx = 0;
77                         /* looped back, means no inflight cops in the queue */
78                         if (last_slave_idx == rr_qp_ctx->last_deq_slave_idx)
79                                 return 0;
80                 } while (rr_qp_ctx->slaves[last_slave_idx].nb_inflight_cops
81                                 == 0);
82         }
83
84         slave = &rr_qp_ctx->slaves[last_slave_idx];
85
86         nb_deq_ops = rte_cryptodev_dequeue_burst(slave->dev_id,
87                         slave->qp_id, ops, nb_ops);
88
89         last_slave_idx += 1;
90         last_slave_idx %= rr_qp_ctx->nb_slaves;
91
92         rr_qp_ctx->last_deq_slave_idx = last_slave_idx;
93
94         slave->nb_inflight_cops -= nb_deq_ops;
95
96         return nb_deq_ops;
97 }
98
99 static uint16_t
100 schedule_dequeue_ordering(void *qp, struct rte_crypto_op **ops,
101                 uint16_t nb_ops)
102 {
103         struct rte_ring *order_ring =
104                         ((struct scheduler_qp_ctx *)qp)->order_ring;
105
106         schedule_dequeue(qp, ops, nb_ops);
107
108         return scheduler_order_drain(order_ring, ops, nb_ops);
109 }
110
111 static int
112 slave_attach(__rte_unused struct rte_cryptodev *dev,
113                 __rte_unused uint8_t slave_id)
114 {
115         return 0;
116 }
117
118 static int
119 slave_detach(__rte_unused struct rte_cryptodev *dev,
120                 __rte_unused uint8_t slave_id)
121 {
122         return 0;
123 }
124
125 static int
126 scheduler_start(struct rte_cryptodev *dev)
127 {
128         struct scheduler_ctx *sched_ctx = dev->data->dev_private;
129         uint16_t i;
130
131         if (sched_ctx->reordering_enabled) {
132                 dev->enqueue_burst = &schedule_enqueue_ordering;
133                 dev->dequeue_burst = &schedule_dequeue_ordering;
134         } else {
135                 dev->enqueue_burst = &schedule_enqueue;
136                 dev->dequeue_burst = &schedule_dequeue;
137         }
138
139         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
140                 struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[i];
141                 struct rr_scheduler_qp_ctx *rr_qp_ctx =
142                                 qp_ctx->private_qp_ctx;
143                 uint32_t j;
144
145                 memset(rr_qp_ctx->slaves, 0,
146                                 RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES *
147                                 sizeof(struct scheduler_slave));
148                 for (j = 0; j < sched_ctx->nb_slaves; j++) {
149                         rr_qp_ctx->slaves[j].dev_id =
150                                         sched_ctx->slaves[j].dev_id;
151                         rr_qp_ctx->slaves[j].qp_id = i;
152                 }
153
154                 rr_qp_ctx->nb_slaves = sched_ctx->nb_slaves;
155
156                 rr_qp_ctx->last_enq_slave_idx = 0;
157                 rr_qp_ctx->last_deq_slave_idx = 0;
158         }
159
160         return 0;
161 }
162
163 static int
164 scheduler_stop(__rte_unused struct rte_cryptodev *dev)
165 {
166         return 0;
167 }
168
169 static int
170 scheduler_config_qp(struct rte_cryptodev *dev, uint16_t qp_id)
171 {
172         struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];
173         struct rr_scheduler_qp_ctx *rr_qp_ctx;
174
175         rr_qp_ctx = rte_zmalloc_socket(NULL, sizeof(*rr_qp_ctx), 0,
176                         rte_socket_id());
177         if (!rr_qp_ctx) {
178                 CR_SCHED_LOG(ERR, "failed allocate memory for private queue pair");
179                 return -ENOMEM;
180         }
181
182         qp_ctx->private_qp_ctx = (void *)rr_qp_ctx;
183
184         return 0;
185 }
186
187 static int
188 scheduler_create_private_ctx(__rte_unused struct rte_cryptodev *dev)
189 {
190         return 0;
191 }
192
193 struct rte_cryptodev_scheduler_ops scheduler_rr_ops = {
194         slave_attach,
195         slave_detach,
196         scheduler_start,
197         scheduler_stop,
198         scheduler_config_qp,
199         scheduler_create_private_ctx,
200         NULL,   /* option_set */
201         NULL    /* option_get */
202 };
203
204 struct rte_cryptodev_scheduler scheduler = {
205                 .name = "roundrobin-scheduler",
206                 .description = "scheduler which will round robin burst across "
207                                 "slave crypto devices",
208                 .mode = CDEV_SCHED_MODE_ROUNDROBIN,
209                 .ops = &scheduler_rr_ops
210 };
211
212 struct rte_cryptodev_scheduler *roundrobin_scheduler = &scheduler;