drivers/net/cnxk/cnxk_ethdev.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2021 Marvell.
   3  */
   4 #ifndef __CNXK_ETHDEV_H__
   5 #define __CNXK_ETHDEV_H__
   6
   7 #include <math.h>
   8 #include <stdint.h>
   9
  10 #include <ethdev_driver.h>
  11 #include <ethdev_pci.h>
  12 #include <rte_kvargs.h>
  13 #include <rte_mbuf.h>
  14 #include <rte_mbuf_pool_ops.h>
  15 #include <rte_mempool.h>
  16
  17 #include "roc_api.h"
  18
  19 #define CNXK_ETH_DEV_PMD_VERSION "1.0"
  20
  21 /* Used for struct cnxk_eth_dev::flags */
  22 #define CNXK_LINK_CFG_IN_PROGRESS_F BIT_ULL(0)
  23
  24 /* VLAN tag inserted by NIX_TX_VTAG_ACTION.
  25  * In Tx space is always reserved for this in FRS.
  26  */
  27 #define CNXK_NIX_MAX_VTAG_INS      2
  28 #define CNXK_NIX_MAX_VTAG_ACT_SIZE (4 * CNXK_NIX_MAX_VTAG_INS)
  29
  30 /* ETH_HLEN+ETH_FCS+2*VLAN_HLEN */
  31 #define CNXK_NIX_L2_OVERHEAD (RTE_ETHER_HDR_LEN + \
  32                               RTE_ETHER_CRC_LEN + \
  33                               CNXK_NIX_MAX_VTAG_ACT_SIZE)
  34
  35 #define CNXK_NIX_RX_MIN_DESC        16
  36 #define CNXK_NIX_RX_MIN_DESC_ALIGN  16
  37 #define CNXK_NIX_RX_NB_SEG_MAX      6
  38 #define CNXK_NIX_RX_DEFAULT_RING_SZ 4096
  39 /* Max supported SQB count */
  40 #define CNXK_NIX_TX_MAX_SQB 512
  41
  42 /* If PTP is enabled additional SEND MEM DESC is required which
  43  * takes 2 words, hence max 7 iova address are possible
  44  */
  45 #if defined(RTE_LIBRTE_IEEE1588)
  46 #define CNXK_NIX_TX_NB_SEG_MAX 7
  47 #else
  48 #define CNXK_NIX_TX_NB_SEG_MAX 9
  49 #endif
  50
  51 #define CNXK_NIX_TX_MSEG_SG_DWORDS                                             \
  52         ((RTE_ALIGN_MUL_CEIL(CNXK_NIX_TX_NB_SEG_MAX, 3) / 3) +                 \
  53          CNXK_NIX_TX_NB_SEG_MAX)
  54
  55 #define CNXK_NIX_RSS_L3_L4_SRC_DST                                             \
  56         (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY | ETH_RSS_L4_SRC_ONLY |     \
  57          ETH_RSS_L4_DST_ONLY)
  58
  59 #define CNXK_NIX_RSS_OFFLOAD                                                   \
  60         (ETH_RSS_PORT | ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP |               \
  61          ETH_RSS_SCTP | ETH_RSS_TUNNEL | ETH_RSS_L2_PAYLOAD |                  \
  62          CNXK_NIX_RSS_L3_L4_SRC_DST | ETH_RSS_LEVEL_MASK | ETH_RSS_C_VLAN)
  63
  64 #define CNXK_NIX_TX_OFFLOAD_CAPA                                               \
  65         (DEV_TX_OFFLOAD_MBUF_FAST_FREE | DEV_TX_OFFLOAD_MT_LOCKFREE |          \
  66          DEV_TX_OFFLOAD_VLAN_INSERT | DEV_TX_OFFLOAD_QINQ_INSERT |             \
  67          DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM | DEV_TX_OFFLOAD_OUTER_UDP_CKSUM |    \
  68          DEV_TX_OFFLOAD_TCP_CKSUM | DEV_TX_OFFLOAD_UDP_CKSUM |                 \
  69          DEV_TX_OFFLOAD_SCTP_CKSUM | DEV_TX_OFFLOAD_TCP_TSO |                  \
  70          DEV_TX_OFFLOAD_VXLAN_TNL_TSO | DEV_TX_OFFLOAD_GENEVE_TNL_TSO |        \
  71          DEV_TX_OFFLOAD_GRE_TNL_TSO | DEV_TX_OFFLOAD_MULTI_SEGS |              \
  72          DEV_TX_OFFLOAD_IPV4_CKSUM)
  73
  74 #define CNXK_NIX_RX_OFFLOAD_CAPA                                               \
  75         (DEV_RX_OFFLOAD_CHECKSUM | DEV_RX_OFFLOAD_SCTP_CKSUM |                 \
  76          DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM | DEV_RX_OFFLOAD_SCATTER |            \
  77          DEV_RX_OFFLOAD_JUMBO_FRAME | DEV_RX_OFFLOAD_OUTER_UDP_CKSUM |         \
  78          DEV_RX_OFFLOAD_RSS_HASH)
  79
  80 #define RSS_IPV4_ENABLE                                                        \
  81         (ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | ETH_RSS_NONFRAG_IPV4_UDP |         \
  82          ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_NONFRAG_IPV4_SCTP)
  83
  84 #define RSS_IPV6_ENABLE                                                        \
  85         (ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | ETH_RSS_NONFRAG_IPV6_UDP |         \
  86          ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_NONFRAG_IPV6_SCTP)
  87
  88 #define RSS_IPV6_EX_ENABLE                                                     \
  89         (ETH_RSS_IPV6_EX | ETH_RSS_IPV6_TCP_EX | ETH_RSS_IPV6_UDP_EX)
  90
  91 #define RSS_MAX_LEVELS 3
  92
  93 #define RSS_IPV4_INDEX 0
  94 #define RSS_IPV6_INDEX 1
  95 #define RSS_TCP_INDEX  2
  96 #define RSS_UDP_INDEX  3
  97 #define RSS_SCTP_INDEX 4
  98 #define RSS_DMAC_INDEX 5
  99
 100 /* Default mark value used when none is provided. */
 101 #define CNXK_FLOW_ACTION_FLAG_DEFAULT 0xffff
 102
 103 #define PTYPE_NON_TUNNEL_WIDTH    16
 104 #define PTYPE_TUNNEL_WIDTH        12
 105 #define PTYPE_NON_TUNNEL_ARRAY_SZ BIT(PTYPE_NON_TUNNEL_WIDTH)
 106 #define PTYPE_TUNNEL_ARRAY_SZ     BIT(PTYPE_TUNNEL_WIDTH)
 107 #define PTYPE_ARRAY_SZ                                                         \
 108         ((PTYPE_NON_TUNNEL_ARRAY_SZ + PTYPE_TUNNEL_ARRAY_SZ) * sizeof(uint16_t))
 109 /* Fastpath lookup */
 110 #define CNXK_NIX_FASTPATH_LOOKUP_MEM "cnxk_nix_fastpath_lookup_mem"
 111
 112 #define CNXK_NIX_UDP_TUN_BITMASK                                               \
 113         ((1ull << (PKT_TX_TUNNEL_VXLAN >> 45)) |                               \
 114          (1ull << (PKT_TX_TUNNEL_GENEVE >> 45)))
 115
 116 struct cnxk_eth_qconf {
 117         union {
 118                 struct rte_eth_txconf tx;
 119                 struct rte_eth_rxconf rx;
 120         } conf;
 121         struct rte_mempool *mp;
 122         uint16_t nb_desc;
 123         uint8_t valid;
 124 };
 125
 126 struct cnxk_eth_dev {
 127         /* ROC NIX */
 128         struct roc_nix nix;
 129
 130         /* ROC RQs, SQs and CQs */
 131         struct roc_nix_rq *rqs;
 132         struct roc_nix_sq *sqs;
 133         struct roc_nix_cq *cqs;
 134
 135         /* Configured queue count */
 136         uint16_t nb_rxq;
 137         uint16_t nb_txq;
 138         uint8_t configured;
 139
 140         /* Max macfilter entries */
 141         uint8_t max_mac_entries;
 142
 143         uint16_t flags;
 144         uint8_t ptype_disable;
 145         bool scalar_ena;
 146
 147         /* Pointer back to rte */
 148         struct rte_eth_dev *eth_dev;
 149
 150         /* HW capabilities / Limitations */
 151         union {
 152                 struct {
 153                         uint64_t cq_min_4k : 1;
 154                 };
 155                 uint64_t hwcap;
 156         };
 157
 158         /* Rx and Tx offload capabilities */
 159         uint64_t rx_offload_capa;
 160         uint64_t tx_offload_capa;
 161         uint32_t speed_capa;
 162         /* Configured Rx and Tx offloads */
 163         uint64_t rx_offloads;
 164         uint64_t tx_offloads;
 165         /* Platform specific offload flags */
 166         uint16_t rx_offload_flags;
 167         uint16_t tx_offload_flags;
 168
 169         /* ETHDEV RSS HF bitmask */
 170         uint64_t ethdev_rss_hf;
 171
 172         /* Saved qconf before lf realloc */
 173         struct cnxk_eth_qconf *tx_qconf;
 174         struct cnxk_eth_qconf *rx_qconf;
 175
 176         /* Rx burst for cleanup(Only Primary) */
 177         eth_rx_burst_t rx_pkt_burst_no_offload;
 178
 179         /* Default mac address */
 180         uint8_t mac_addr[RTE_ETHER_ADDR_LEN];
 181
 182         /* LSO Tunnel format indices */
 183         uint64_t lso_tun_fmt;
 184 };
 185
 186 struct cnxk_eth_rxq_sp {
 187         struct cnxk_eth_dev *dev;
 188         struct cnxk_eth_qconf qconf;
 189         uint16_t qid;
 190 } __plt_cache_aligned;
 191
 192 struct cnxk_eth_txq_sp {
 193         struct cnxk_eth_dev *dev;
 194         struct cnxk_eth_qconf qconf;
 195         uint16_t qid;
 196 } __plt_cache_aligned;
 197
 198 static inline struct cnxk_eth_dev *
 199 cnxk_eth_pmd_priv(struct rte_eth_dev *eth_dev)
 200 {
 201         return eth_dev->data->dev_private;
 202 }
 203
 204 static inline struct cnxk_eth_rxq_sp *
 205 cnxk_eth_rxq_to_sp(void *__rxq)
 206 {
 207         return ((struct cnxk_eth_rxq_sp *)__rxq) - 1;
 208 }
 209
 210 static inline struct cnxk_eth_txq_sp *
 211 cnxk_eth_txq_to_sp(void *__txq)
 212 {
 213         return ((struct cnxk_eth_txq_sp *)__txq) - 1;
 214 }
 215
 216 /* Common ethdev ops */
 217 extern struct eth_dev_ops cnxk_eth_dev_ops;
 218
 219 /* Ops */
 220 int cnxk_nix_probe(struct rte_pci_driver *pci_drv,
 221                    struct rte_pci_device *pci_dev);
 222 int cnxk_nix_remove(struct rte_pci_device *pci_dev);
 223 int cnxk_nix_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu);
 224 int cnxk_nix_mac_addr_set(struct rte_eth_dev *eth_dev,
 225                           struct rte_ether_addr *addr);
 226 int cnxk_nix_promisc_enable(struct rte_eth_dev *eth_dev);
 227 int cnxk_nix_promisc_disable(struct rte_eth_dev *eth_dev);
 228 int cnxk_nix_info_get(struct rte_eth_dev *eth_dev,
 229                       struct rte_eth_dev_info *dev_info);
 230 int cnxk_nix_configure(struct rte_eth_dev *eth_dev);
 231 int cnxk_nix_tx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t qid,
 232                             uint16_t nb_desc, uint16_t fp_tx_q_sz,
 233                             const struct rte_eth_txconf *tx_conf);
 234 int cnxk_nix_rx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t qid,
 235                             uint16_t nb_desc, uint16_t fp_rx_q_sz,
 236                             const struct rte_eth_rxconf *rx_conf,
 237                             struct rte_mempool *mp);
 238 int cnxk_nix_tx_queue_stop(struct rte_eth_dev *eth_dev, uint16_t qid);
 239 int cnxk_nix_dev_start(struct rte_eth_dev *eth_dev);
 240
 241 uint64_t cnxk_nix_rxq_mbuf_setup(struct cnxk_eth_dev *dev);
 242
 243 /* RSS */
 244 uint32_t cnxk_rss_ethdev_to_nix(struct cnxk_eth_dev *dev, uint64_t ethdev_rss,
 245                                 uint8_t rss_level);
 246
 247 /* Link */
 248 void cnxk_nix_toggle_flag_link_cfg(struct cnxk_eth_dev *dev, bool set);
 249 void cnxk_eth_dev_link_status_cb(struct roc_nix *nix,
 250                                  struct roc_nix_link_info *link);
 251 int cnxk_nix_link_update(struct rte_eth_dev *eth_dev, int wait_to_complete);
 252
 253 /* Lookup configuration */
 254 const uint32_t *cnxk_nix_supported_ptypes_get(struct rte_eth_dev *eth_dev);
 255 void *cnxk_nix_fastpath_lookup_mem_get(void);
 256
 257 /* Devargs */
 258 int cnxk_ethdev_parse_devargs(struct rte_devargs *devargs,
 259                               struct cnxk_eth_dev *dev);
 260
 261 /* Inlines */
 262 static __rte_always_inline uint64_t
 263 cnxk_pktmbuf_detach(struct rte_mbuf *m)
 264 {
 265         struct rte_mempool *mp = m->pool;
 266         uint32_t mbuf_size, buf_len;
 267         struct rte_mbuf *md;
 268         uint16_t priv_size;
 269         uint16_t refcount;
 270
 271         /* Update refcount of direct mbuf */
 272         md = rte_mbuf_from_indirect(m);
 273         refcount = rte_mbuf_refcnt_update(md, -1);
 274
 275         priv_size = rte_pktmbuf_priv_size(mp);
 276         mbuf_size = (uint32_t)(sizeof(struct rte_mbuf) + priv_size);
 277         buf_len = rte_pktmbuf_data_room_size(mp);
 278
 279         m->priv_size = priv_size;
 280         m->buf_addr = (char *)m + mbuf_size;
 281         m->buf_iova = rte_mempool_virt2iova(m) + mbuf_size;
 282         m->buf_len = (uint16_t)buf_len;
 283         rte_pktmbuf_reset_headroom(m);
 284         m->data_len = 0;
 285         m->ol_flags = 0;
 286         m->next = NULL;
 287         m->nb_segs = 1;
 288
 289         /* Now indirect mbuf is safe to free */
 290         rte_pktmbuf_free(m);
 291
 292         if (refcount == 0) {
 293                 rte_mbuf_refcnt_set(md, 1);
 294                 md->data_len = 0;
 295                 md->ol_flags = 0;
 296                 md->next = NULL;
 297                 md->nb_segs = 1;
 298                 return 0;
 299         } else {
 300                 return 1;
 301         }
 302 }
 303
 304 static __rte_always_inline uint64_t
 305 cnxk_nix_prefree_seg(struct rte_mbuf *m)
 306 {
 307         if (likely(rte_mbuf_refcnt_read(m) == 1)) {
 308                 if (!RTE_MBUF_DIRECT(m))
 309                         return cnxk_pktmbuf_detach(m);
 310
 311                 m->next = NULL;
 312                 m->nb_segs = 1;
 313                 return 0;
 314         } else if (rte_mbuf_refcnt_update(m, -1) == 0) {
 315                 if (!RTE_MBUF_DIRECT(m))
 316                         return cnxk_pktmbuf_detach(m);
 317
 318                 rte_mbuf_refcnt_set(m, 1);
 319                 m->next = NULL;
 320                 m->nb_segs = 1;
 321                 return 0;
 322         }
 323
 324         /* Mbuf is having refcount more than 1 so need not to be freed */
 325         return 1;
 326 }
 327
 328 #endif /* __CNXK_ETHDEV_H__ */