regex/mlx5: remove RXP CSR file
[dpdk.git] / drivers / regex / mlx5 / mlx5_rxp.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2020 Mellanox Technologies, Ltd
3  */
4
5 #include <rte_log.h>
6 #include <rte_errno.h>
7 #include <rte_malloc.h>
8 #include <rte_regexdev.h>
9 #include <rte_regexdev_core.h>
10 #include <rte_regexdev_driver.h>
11 #include <sys/mman.h>
12
13 #include <mlx5_glue.h>
14 #include <mlx5_devx_cmds.h>
15 #include <mlx5_prm.h>
16 #include <mlx5_common_os.h>
17
18 #include "mlx5_regex.h"
19 #include "mlx5_regex_utils.h"
20 #include "mlx5_rxp.h"
21
22 #define MLX5_REGEX_MAX_MATCHES MLX5_RXP_MAX_MATCHES
23 #define MLX5_REGEX_MAX_PAYLOAD_SIZE MLX5_RXP_MAX_JOB_LENGTH
24 #define MLX5_REGEX_MAX_RULES_PER_GROUP UINT32_MAX
25 #define MLX5_REGEX_MAX_GROUPS MLX5_RXP_MAX_SUBSETS
26
27 #define MLX5_REGEX_RXP_ROF2_LINE_LEN 34
28
29 /* Private Declarations */
30 static int
31 rxp_create_mkey(struct mlx5_regex_priv *priv, void *ptr, size_t size,
32         uint32_t access, struct mlx5_regex_mkey *mkey);
33 static inline void
34 rxp_destroy_mkey(struct mlx5_regex_mkey *mkey);
35
36 int
37 mlx5_regex_info_get(struct rte_regexdev *dev __rte_unused,
38                     struct rte_regexdev_info *info)
39 {
40         info->max_matches = MLX5_REGEX_MAX_MATCHES;
41         info->max_payload_size = MLX5_REGEX_MAX_PAYLOAD_SIZE;
42         info->max_rules_per_group = MLX5_REGEX_MAX_RULES_PER_GROUP;
43         info->max_groups = MLX5_REGEX_MAX_GROUPS;
44         info->regexdev_capa = RTE_REGEXDEV_SUPP_PCRE_GREEDY_F |
45                               RTE_REGEXDEV_CAPA_QUEUE_PAIR_OOS_F;
46         info->rule_flags = 0;
47         info->max_queue_pairs = UINT16_MAX;
48         return 0;
49 }
50
51 static int
52 rxp_create_mkey(struct mlx5_regex_priv *priv, void *ptr, size_t size,
53         uint32_t access, struct mlx5_regex_mkey *mkey)
54 {
55         struct mlx5_devx_mkey_attr mkey_attr;
56
57         /* Register the memory. */
58         mkey->umem = mlx5_glue->devx_umem_reg(priv->cdev->ctx, ptr, size, access);
59         if (!mkey->umem) {
60                 DRV_LOG(ERR, "Failed to register memory!");
61                 return -ENODEV;
62         }
63         /* Create mkey */
64         mkey_attr = (struct mlx5_devx_mkey_attr) {
65                 .addr = (uintptr_t)ptr,
66                 .size = (uint32_t)size,
67                 .umem_id = mlx5_os_get_umem_id(mkey->umem),
68                 .pg_access = 1,
69                 .umr_en = 0,
70         };
71 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
72         mkey_attr.pd = priv->cdev->pdn;
73 #endif
74         mkey->mkey = mlx5_devx_cmd_mkey_create(priv->cdev->ctx, &mkey_attr);
75         if (!mkey->mkey) {
76                 DRV_LOG(ERR, "Failed to create direct mkey!");
77                 return -ENODEV;
78         }
79         return 0;
80 }
81
82 static inline void
83 rxp_destroy_mkey(struct mlx5_regex_mkey *mkey)
84 {
85         if (mkey->mkey)
86                 claim_zero(mlx5_devx_cmd_destroy(mkey->mkey));
87         if (mkey->umem)
88                 claim_zero(mlx5_glue->devx_umem_dereg(mkey->umem));
89 }
90
91 int
92 mlx5_regex_rules_db_import(struct rte_regexdev *dev,
93                      const char *rule_db, uint32_t rule_db_len)
94 {
95         struct mlx5_regex_priv *priv = dev->data->dev_private;
96         struct mlx5_regex_mkey mkey;
97         uint32_t id;
98         int ret;
99         void *ptr;
100
101         if (priv->prog_mode == MLX5_RXP_MODE_NOT_DEFINED) {
102                 DRV_LOG(ERR, "RXP programming mode not set!");
103                 return -1;
104         }
105         if (rule_db == NULL) {
106                 DRV_LOG(ERR, "Database empty!");
107                 return -ENODEV;
108         }
109         if (rule_db_len == 0)
110                 return -EINVAL;
111         /* copy rules - rules have to be 4KB aligned. */
112         ptr = rte_malloc("", rule_db_len, 1 << 12);
113         if (!ptr) {
114                 DRV_LOG(ERR, "Failed to allocate rules file memory.");
115                 return -ENOMEM;
116         }
117         rte_memcpy(ptr, rule_db, rule_db_len);
118         /* Register umem and create rof mkey. */
119         ret = rxp_create_mkey(priv, ptr, rule_db_len, /*access=*/7, &mkey);
120         if (ret < 0)
121                 return ret;
122
123         for (id = 0; id < priv->nb_engines; id++) {
124                 ret = mlx5_devx_regex_rules_program(priv->cdev->ctx, id,
125                         mkey.mkey->id, rule_db_len, (uintptr_t)ptr);
126                 if (ret < 0) {
127                         DRV_LOG(ERR, "Failed to program rxp rules.");
128                         ret = -ENODEV;
129                         break;
130                 }
131                 ret = 0;
132         }
133         rxp_destroy_mkey(&mkey);
134         rte_free(ptr);
135         return ret;
136 }
137
138 int
139 mlx5_regex_configure(struct rte_regexdev *dev,
140                      const struct rte_regexdev_config *cfg)
141 {
142         struct mlx5_regex_priv *priv = dev->data->dev_private;
143         int ret;
144
145         if (priv->prog_mode == MLX5_RXP_MODE_NOT_DEFINED)
146                 return -1;
147         priv->nb_queues = cfg->nb_queue_pairs;
148         dev->data->dev_conf.nb_queue_pairs = priv->nb_queues;
149         priv->qps = rte_zmalloc(NULL, sizeof(struct mlx5_regex_qp) *
150                                 priv->nb_queues, 0);
151         if (!priv->nb_queues) {
152                 DRV_LOG(ERR, "can't allocate qps memory");
153                 rte_errno = ENOMEM;
154                 return -rte_errno;
155         }
156         priv->nb_max_matches = cfg->nb_max_matches;
157         if (cfg->rule_db != NULL) {
158                 ret = mlx5_regex_rules_db_import(dev, cfg->rule_db,
159                                                  cfg->rule_db_len);
160                 if (ret < 0) {
161                         DRV_LOG(ERR, "Failed to program rxp rules.");
162                         rte_errno = ENODEV;
163                         goto configure_error;
164                 }
165         } else
166                 DRV_LOG(DEBUG, "Regex config without rules programming!");
167         return 0;
168 configure_error:
169         if (priv->qps)
170                 rte_free(priv->qps);
171         return -rte_errno;
172 }