drivers/net/ethernet/hisilicon/hns3/hns3_enet.h

   1 /*
   2  * Copyright (c) 2016 Hisilicon Limited.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  */
   9
  10 #ifndef __HNS3_ENET_H
  11 #define __HNS3_ENET_H
  12
  13 #include "hnae3.h"
  14
  15 extern const char hns3_driver_version[];
  16
  17 enum hns3_nic_state {
  18         HNS3_NIC_STATE_TESTING,
  19         HNS3_NIC_STATE_RESETTING,
  20         HNS3_NIC_STATE_REINITING,
  21         HNS3_NIC_STATE_DOWN,
  22         HNS3_NIC_STATE_DISABLED,
  23         HNS3_NIC_STATE_REMOVING,
  24         HNS3_NIC_STATE_SERVICE_INITED,
  25         HNS3_NIC_STATE_SERVICE_SCHED,
  26         HNS3_NIC_STATE2_RESET_REQUESTED,
  27         HNS3_NIC_STATE_MAX
  28 };
  29
  30 #define HNS3_RING_RX_RING_BASEADDR_L_REG        0x00000
  31 #define HNS3_RING_RX_RING_BASEADDR_H_REG        0x00004
  32 #define HNS3_RING_RX_RING_BD_NUM_REG            0x00008
  33 #define HNS3_RING_RX_RING_BD_LEN_REG            0x0000C
  34 #define HNS3_RING_RX_RING_TAIL_REG              0x00018
  35 #define HNS3_RING_RX_RING_HEAD_REG              0x0001C
  36 #define HNS3_RING_RX_RING_FBDNUM_REG            0x00020
  37 #define HNS3_RING_RX_RING_PKTNUM_RECORD_REG     0x0002C
  38
  39 #define HNS3_RING_TX_RING_BASEADDR_L_REG        0x00040
  40 #define HNS3_RING_TX_RING_BASEADDR_H_REG        0x00044
  41 #define HNS3_RING_TX_RING_BD_NUM_REG            0x00048
  42 #define HNS3_RING_TX_RING_BD_LEN_REG            0x0004C
  43 #define HNS3_RING_TX_RING_TAIL_REG              0x00058
  44 #define HNS3_RING_TX_RING_HEAD_REG              0x0005C
  45 #define HNS3_RING_TX_RING_FBDNUM_REG            0x00060
  46 #define HNS3_RING_TX_RING_OFFSET_REG            0x00064
  47 #define HNS3_RING_TX_RING_PKTNUM_RECORD_REG     0x0006C
  48
  49 #define HNS3_RING_PREFETCH_EN_REG               0x0007C
  50 #define HNS3_RING_CFG_VF_NUM_REG                0x00080
  51 #define HNS3_RING_ASID_REG                      0x0008C
  52 #define HNS3_RING_RX_VM_REG                     0x00090
  53 #define HNS3_RING_T0_BE_RST                     0x00094
  54 #define HNS3_RING_COULD_BE_RST                  0x00098
  55 #define HNS3_RING_WRR_WEIGHT_REG                0x0009c
  56
  57 #define HNS3_RING_INTMSK_RXWL_REG               0x000A0
  58 #define HNS3_RING_INTSTS_RX_RING_REG            0x000A4
  59 #define HNS3_RX_RING_INT_STS_REG                0x000A8
  60 #define HNS3_RING_INTMSK_TXWL_REG               0x000AC
  61 #define HNS3_RING_INTSTS_TX_RING_REG            0x000B0
  62 #define HNS3_TX_RING_INT_STS_REG                0x000B4
  63 #define HNS3_RING_INTMSK_RX_OVERTIME_REG        0x000B8
  64 #define HNS3_RING_INTSTS_RX_OVERTIME_REG        0x000BC
  65 #define HNS3_RING_INTMSK_TX_OVERTIME_REG        0x000C4
  66 #define HNS3_RING_INTSTS_TX_OVERTIME_REG        0x000C8
  67
  68 #define HNS3_RING_MB_CTRL_REG                   0x00100
  69 #define HNS3_RING_MB_DATA_BASE_REG              0x00200
  70
  71 #define HNS3_TX_REG_OFFSET                      0x40
  72
  73 #define HNS3_RX_HEAD_SIZE                       256
  74
  75 #define HNS3_TX_TIMEOUT (5 * HZ)
  76 #define HNS3_RING_NAME_LEN                      16
  77 #define HNS3_BUFFER_SIZE_2048                   2048
  78 #define HNS3_RING_MAX_PENDING                   32768
  79 #define HNS3_RING_MIN_PENDING                   8
  80 #define HNS3_RING_BD_MULTIPLE                   8
  81 #define HNS3_MAX_MTU                            9728
  82
  83 #define HNS3_BD_SIZE_512_TYPE                   0
  84 #define HNS3_BD_SIZE_1024_TYPE                  1
  85 #define HNS3_BD_SIZE_2048_TYPE                  2
  86 #define HNS3_BD_SIZE_4096_TYPE                  3
  87
  88 #define HNS3_RX_FLAG_VLAN_PRESENT               0x1
  89 #define HNS3_RX_FLAG_L3ID_IPV4                  0x0
  90 #define HNS3_RX_FLAG_L3ID_IPV6                  0x1
  91 #define HNS3_RX_FLAG_L4ID_UDP                   0x0
  92 #define HNS3_RX_FLAG_L4ID_TCP                   0x1
  93
  94 #define HNS3_RXD_DMAC_S                         0
  95 #define HNS3_RXD_DMAC_M                         (0x3 << HNS3_RXD_DMAC_S)
  96 #define HNS3_RXD_VLAN_S                         2
  97 #define HNS3_RXD_VLAN_M                         (0x3 << HNS3_RXD_VLAN_S)
  98 #define HNS3_RXD_L3ID_S                         4
  99 #define HNS3_RXD_L3ID_M                         (0xf << HNS3_RXD_L3ID_S)
 100 #define HNS3_RXD_L4ID_S                         8
 101 #define HNS3_RXD_L4ID_M                         (0xf << HNS3_RXD_L4ID_S)
 102 #define HNS3_RXD_FRAG_B                         12
 103 #define HNS3_RXD_L2E_B                          16
 104 #define HNS3_RXD_L3E_B                          17
 105 #define HNS3_RXD_L4E_B                          18
 106 #define HNS3_RXD_TRUNCAT_B                      19
 107 #define HNS3_RXD_HOI_B                          20
 108 #define HNS3_RXD_DOI_B                          21
 109 #define HNS3_RXD_OL3E_B                         22
 110 #define HNS3_RXD_OL4E_B                         23
 111
 112 #define HNS3_RXD_ODMAC_S                        0
 113 #define HNS3_RXD_ODMAC_M                        (0x3 << HNS3_RXD_ODMAC_S)
 114 #define HNS3_RXD_OVLAN_S                        2
 115 #define HNS3_RXD_OVLAN_M                        (0x3 << HNS3_RXD_OVLAN_S)
 116 #define HNS3_RXD_OL3ID_S                        4
 117 #define HNS3_RXD_OL3ID_M                        (0xf << HNS3_RXD_OL3ID_S)
 118 #define HNS3_RXD_OL4ID_S                        8
 119 #define HNS3_RXD_OL4ID_M                        (0xf << HNS3_RXD_OL4ID_S)
 120 #define HNS3_RXD_FBHI_S                         12
 121 #define HNS3_RXD_FBHI_M                         (0x3 << HNS3_RXD_FBHI_S)
 122 #define HNS3_RXD_FBLI_S                         14
 123 #define HNS3_RXD_FBLI_M                         (0x3 << HNS3_RXD_FBLI_S)
 124
 125 #define HNS3_RXD_BDTYPE_S                       0
 126 #define HNS3_RXD_BDTYPE_M                       (0xf << HNS3_RXD_BDTYPE_S)
 127 #define HNS3_RXD_VLD_B                          4
 128 #define HNS3_RXD_UDP0_B                         5
 129 #define HNS3_RXD_EXTEND_B                       7
 130 #define HNS3_RXD_FE_B                           8
 131 #define HNS3_RXD_LUM_B                          9
 132 #define HNS3_RXD_CRCP_B                         10
 133 #define HNS3_RXD_L3L4P_B                        11
 134 #define HNS3_RXD_TSIND_S                        12
 135 #define HNS3_RXD_TSIND_M                        (0x7 << HNS3_RXD_TSIND_S)
 136 #define HNS3_RXD_LKBK_B                         15
 137 #define HNS3_RXD_HDL_S                          16
 138 #define HNS3_RXD_HDL_M                          (0x7ff << HNS3_RXD_HDL_S)
 139 #define HNS3_RXD_HSIND_B                        31
 140
 141 #define HNS3_TXD_L3T_S                          0
 142 #define HNS3_TXD_L3T_M                          (0x3 << HNS3_TXD_L3T_S)
 143 #define HNS3_TXD_L4T_S                          2
 144 #define HNS3_TXD_L4T_M                          (0x3 << HNS3_TXD_L4T_S)
 145 #define HNS3_TXD_L3CS_B                         4
 146 #define HNS3_TXD_L4CS_B                         5
 147 #define HNS3_TXD_VLAN_B                         6
 148 #define HNS3_TXD_TSO_B                          7
 149
 150 #define HNS3_TXD_L2LEN_S                        8
 151 #define HNS3_TXD_L2LEN_M                        (0xff << HNS3_TXD_L2LEN_S)
 152 #define HNS3_TXD_L3LEN_S                        16
 153 #define HNS3_TXD_L3LEN_M                        (0xff << HNS3_TXD_L3LEN_S)
 154 #define HNS3_TXD_L4LEN_S                        24
 155 #define HNS3_TXD_L4LEN_M                        (0xff << HNS3_TXD_L4LEN_S)
 156
 157 #define HNS3_TXD_OL3T_S                         0
 158 #define HNS3_TXD_OL3T_M                         (0x3 << HNS3_TXD_OL3T_S)
 159 #define HNS3_TXD_OVLAN_B                        2
 160 #define HNS3_TXD_MACSEC_B                       3
 161 #define HNS3_TXD_TUNTYPE_S                      4
 162 #define HNS3_TXD_TUNTYPE_M                      (0xf << HNS3_TXD_TUNTYPE_S)
 163
 164 #define HNS3_TXD_BDTYPE_S                       0
 165 #define HNS3_TXD_BDTYPE_M                       (0xf << HNS3_TXD_BDTYPE_S)
 166 #define HNS3_TXD_FE_B                           4
 167 #define HNS3_TXD_SC_S                           5
 168 #define HNS3_TXD_SC_M                           (0x3 << HNS3_TXD_SC_S)
 169 #define HNS3_TXD_EXTEND_B                       7
 170 #define HNS3_TXD_VLD_B                          8
 171 #define HNS3_TXD_RI_B                           9
 172 #define HNS3_TXD_RA_B                           10
 173 #define HNS3_TXD_TSYN_B                         11
 174 #define HNS3_TXD_DECTTL_S                       12
 175 #define HNS3_TXD_DECTTL_M                       (0xf << HNS3_TXD_DECTTL_S)
 176
 177 #define HNS3_TXD_MSS_S                          0
 178 #define HNS3_TXD_MSS_M                          (0x3fff << HNS3_TXD_MSS_S)
 179
 180 #define HNS3_VECTOR_TX_IRQ                      BIT_ULL(0)
 181 #define HNS3_VECTOR_RX_IRQ                      BIT_ULL(1)
 182
 183 #define HNS3_VECTOR_NOT_INITED                  0
 184 #define HNS3_VECTOR_INITED                      1
 185
 186 #define HNS3_MAX_BD_SIZE                        65535
 187 #define HNS3_MAX_BD_PER_FRAG                    8
 188 #define HNS3_MAX_BD_PER_PKT                     MAX_SKB_FRAGS
 189
 190 #define HNS3_VECTOR_GL0_OFFSET                  0x100
 191 #define HNS3_VECTOR_GL1_OFFSET                  0x200
 192 #define HNS3_VECTOR_GL2_OFFSET                  0x300
 193 #define HNS3_VECTOR_RL_OFFSET                   0x900
 194 #define HNS3_VECTOR_RL_EN_B                     6
 195
 196 enum hns3_pkt_l3t_type {
 197         HNS3_L3T_NONE,
 198         HNS3_L3T_IPV6,
 199         HNS3_L3T_IPV4,
 200         HNS3_L3T_RESERVED
 201 };
 202
 203 enum hns3_pkt_l4t_type {
 204         HNS3_L4T_UNKNOWN,
 205         HNS3_L4T_TCP,
 206         HNS3_L4T_UDP,
 207         HNS3_L4T_SCTP
 208 };
 209
 210 enum hns3_pkt_ol3t_type {
 211         HNS3_OL3T_NONE,
 212         HNS3_OL3T_IPV6,
 213         HNS3_OL3T_IPV4_NO_CSUM,
 214         HNS3_OL3T_IPV4_CSUM
 215 };
 216
 217 enum hns3_pkt_tun_type {
 218         HNS3_TUN_NONE,
 219         HNS3_TUN_MAC_IN_UDP,
 220         HNS3_TUN_NVGRE,
 221         HNS3_TUN_OTHER
 222 };
 223
 224 /* hardware spec ring buffer format */
 225 struct __packed hns3_desc {
 226         __le64 addr;
 227         union {
 228                 struct {
 229                         __le16 vlan_tag;
 230                         __le16 send_size;
 231                         union {
 232                                 __le32 type_cs_vlan_tso_len;
 233                                 struct {
 234                                         __u8 type_cs_vlan_tso;
 235                                         __u8 l2_len;
 236                                         __u8 l3_len;
 237                                         __u8 l4_len;
 238                                 };
 239                         };
 240                         __le16 outer_vlan_tag;
 241                         __le16 tv;
 242
 243                 union {
 244                         __le32 ol_type_vlan_len_msec;
 245                         struct {
 246                                 __u8 ol_type_vlan_msec;
 247                                 __u8 ol2_len;
 248                                 __u8 ol3_len;
 249                                 __u8 ol4_len;
 250                         };
 251                 };
 252
 253                         __le32 paylen;
 254                         __le16 bdtp_fe_sc_vld_ra_ri;
 255                         __le16 mss;
 256                 } tx;
 257
 258                 struct {
 259                         __le32 l234_info;
 260                         __le16 pkt_len;
 261                         __le16 size;
 262
 263                         __le32 rss_hash;
 264                         __le16 fd_id;
 265                         __le16 vlan_tag;
 266
 267                         union {
 268                                 __le32 ol_info;
 269                                 struct {
 270                                         __le16 o_dm_vlan_id_fb;
 271                                         __le16 ot_vlan_tag;
 272                                 };
 273                         };
 274
 275                         __le32 bd_base_info;
 276                 } rx;
 277         };
 278 };
 279
 280 struct hns3_desc_cb {
 281         dma_addr_t dma; /* dma address of this desc */
 282         void *buf;      /* cpu addr for a desc */
 283
 284         /* priv data for the desc, e.g. skb when use with ip stack*/
 285         void *priv;
 286         u16 page_offset;
 287         u16 reuse_flag;
 288
 289         u16 length;     /* length of the buffer */
 290
 291        /* desc type, used by the ring user to mark the type of the priv data */
 292         u16 type;
 293 };
 294
 295 enum hns3_pkt_l3type {
 296         HNS3_L3_TYPE_IPV4,
 297         HNS3_L3_TYPE_IPV6,
 298         HNS3_L3_TYPE_ARP,
 299         HNS3_L3_TYPE_RARP,
 300         HNS3_L3_TYPE_IPV4_OPT,
 301         HNS3_L3_TYPE_IPV6_EXT,
 302         HNS3_L3_TYPE_LLDP,
 303         HNS3_L3_TYPE_BPDU,
 304         HNS3_L3_TYPE_MAC_PAUSE,
 305         HNS3_L3_TYPE_PFC_PAUSE,/* 0x9*/
 306
 307         /* reserved for 0xA~0xB*/
 308
 309         HNS3_L3_TYPE_CNM = 0xc,
 310
 311         /* reserved for 0xD~0xE*/
 312
 313         HNS3_L3_TYPE_PARSE_FAIL = 0xf /* must be last */
 314 };
 315
 316 enum hns3_pkt_l4type {
 317         HNS3_L4_TYPE_UDP,
 318         HNS3_L4_TYPE_TCP,
 319         HNS3_L4_TYPE_GRE,
 320         HNS3_L4_TYPE_SCTP,
 321         HNS3_L4_TYPE_IGMP,
 322         HNS3_L4_TYPE_ICMP,
 323
 324         /* reserved for 0x6~0xE */
 325
 326         HNS3_L4_TYPE_PARSE_FAIL = 0xf /* must be last */
 327 };
 328
 329 enum hns3_pkt_ol3type {
 330         HNS3_OL3_TYPE_IPV4 = 0,
 331         HNS3_OL3_TYPE_IPV6,
 332         /* reserved for 0x2~0x3 */
 333         HNS3_OL3_TYPE_IPV4_OPT = 4,
 334         HNS3_OL3_TYPE_IPV6_EXT,
 335
 336         /* reserved for 0x6~0xE*/
 337
 338         HNS3_OL3_TYPE_PARSE_FAIL = 0xf  /* must be last */
 339 };
 340
 341 enum hns3_pkt_ol4type {
 342         HNS3_OL4_TYPE_NO_TUN,
 343         HNS3_OL4_TYPE_MAC_IN_UDP,
 344         HNS3_OL4_TYPE_NVGRE,
 345         HNS3_OL4_TYPE_UNKNOWN
 346 };
 347
 348 struct ring_stats {
 349         u64 io_err_cnt;
 350         u64 sw_err_cnt;
 351         u64 seg_pkt_cnt;
 352         union {
 353                 struct {
 354                         u64 tx_pkts;
 355                         u64 tx_bytes;
 356                         u64 tx_err_cnt;
 357                         u64 restart_queue;
 358                         u64 tx_busy;
 359                 };
 360                 struct {
 361                         u64 rx_pkts;
 362                         u64 rx_bytes;
 363                         u64 rx_err_cnt;
 364                         u64 reuse_pg_cnt;
 365                         u64 err_pkt_len;
 366                         u64 non_vld_descs;
 367                         u64 err_bd_num;
 368                         u64 l2_err;
 369                         u64 l3l4_csum_err;
 370                 };
 371         };
 372 };
 373
 374 struct hns3_enet_ring {
 375         u8 __iomem *io_base; /* base io address for the ring */
 376         struct hns3_desc *desc; /* dma map address space */
 377         struct hns3_desc_cb *desc_cb;
 378         struct hns3_enet_ring *next;
 379         struct hns3_enet_tqp_vector *tqp_vector;
 380         struct hnae3_queue *tqp;
 381         char ring_name[HNS3_RING_NAME_LEN];
 382         struct device *dev; /* will be used for DMA mapping of descriptors */
 383
 384         /* statistic */
 385         struct ring_stats stats;
 386         struct u64_stats_sync syncp;
 387
 388         dma_addr_t desc_dma_addr;
 389         u32 buf_size;       /* size for hnae_desc->addr, preset by AE */
 390         u16 desc_num;       /* total number of desc */
 391         u16 max_desc_num_per_pkt;
 392         u16 max_raw_data_sz_per_desc;
 393         u16 max_pkt_size;
 394         int next_to_use;    /* idx of next spare desc */
 395
 396         /* idx of lastest sent desc, the ring is empty when equal to
 397          * next_to_use
 398          */
 399         int next_to_clean;
 400
 401         u32 flag;          /* ring attribute */
 402         int irq_init_flag;
 403
 404         int numa_node;
 405         cpumask_t affinity_mask;
 406 };
 407
 408 struct hns_queue;
 409
 410 struct hns3_nic_ring_data {
 411         struct hns3_enet_ring *ring;
 412         struct napi_struct napi;
 413         int queue_index;
 414         int (*poll_one)(struct hns3_nic_ring_data *, int, void *);
 415         void (*ex_process)(struct hns3_nic_ring_data *, struct sk_buff *);
 416         void (*fini_process)(struct hns3_nic_ring_data *);
 417 };
 418
 419 struct hns3_nic_ops {
 420         int (*fill_desc)(struct hns3_enet_ring *ring, void *priv,
 421                          int size, dma_addr_t dma, int frag_end,
 422                          enum hns_desc_type type);
 423         int (*maybe_stop_tx)(struct sk_buff **out_skb,
 424                              int *bnum, struct hns3_enet_ring *ring);
 425         void (*get_rxd_bnum)(u32 bnum_flag, int *out_bnum);
 426 };
 427
 428 enum hns3_flow_level_range {
 429         HNS3_FLOW_LOW = 0,
 430         HNS3_FLOW_MID = 1,
 431         HNS3_FLOW_HIGH = 2,
 432         HNS3_FLOW_ULTRA = 3,
 433 };
 434
 435 enum hns3_link_mode_bits {
 436         HNS3_LM_FIBRE_BIT = BIT(0),
 437         HNS3_LM_AUTONEG_BIT = BIT(1),
 438         HNS3_LM_TP_BIT = BIT(2),
 439         HNS3_LM_PAUSE_BIT = BIT(3),
 440         HNS3_LM_BACKPLANE_BIT = BIT(4),
 441         HNS3_LM_10BASET_HALF_BIT = BIT(5),
 442         HNS3_LM_10BASET_FULL_BIT = BIT(6),
 443         HNS3_LM_100BASET_HALF_BIT = BIT(7),
 444         HNS3_LM_100BASET_FULL_BIT = BIT(8),
 445         HNS3_LM_1000BASET_FULL_BIT = BIT(9),
 446         HNS3_LM_10000BASEKR_FULL_BIT = BIT(10),
 447         HNS3_LM_25000BASEKR_FULL_BIT = BIT(11),
 448         HNS3_LM_40000BASELR4_FULL_BIT = BIT(12),
 449         HNS3_LM_50000BASEKR2_FULL_BIT = BIT(13),
 450         HNS3_LM_100000BASEKR4_FULL_BIT = BIT(14),
 451         HNS3_LM_COUNT = 15
 452 };
 453
 454 #define HNS3_INT_GL_50K         0x000A
 455 #define HNS3_INT_GL_20K         0x0019
 456 #define HNS3_INT_GL_18K         0x001B
 457 #define HNS3_INT_GL_8K          0x003E
 458
 459 struct hns3_enet_ring_group {
 460         /* array of pointers to rings */
 461         struct hns3_enet_ring *ring;
 462         u64 total_bytes;        /* total bytes processed this group */
 463         u64 total_packets;      /* total packets processed this group */
 464         u16 count;
 465         enum hns3_flow_level_range flow_level;
 466         u16 int_gl;
 467 };
 468
 469 struct hns3_enet_tqp_vector {
 470         struct hnae3_handle *handle;
 471         u8 __iomem *mask_addr;
 472         int vector_irq;
 473         int irq_init_flag;
 474
 475         u16 idx;                /* index in the TQP vector array per handle. */
 476
 477         struct napi_struct napi;
 478
 479         struct hns3_enet_ring_group rx_group;
 480         struct hns3_enet_ring_group tx_group;
 481
 482         u16 num_tqps;   /* total number of tqps in TQP vector */
 483
 484         cpumask_t affinity_mask;
 485         char name[HNAE3_INT_NAME_LEN];
 486
 487         /* when 0 should adjust interrupt coalesce parameter */
 488         u8 int_adapt_down;
 489 } ____cacheline_internodealigned_in_smp;
 490
 491 enum hns3_udp_tnl_type {
 492         HNS3_UDP_TNL_VXLAN,
 493         HNS3_UDP_TNL_GENEVE,
 494         HNS3_UDP_TNL_MAX,
 495 };
 496
 497 struct hns3_udp_tunnel {
 498         u16 dst_port;
 499         int used;
 500 };
 501
 502 struct hns3_nic_priv {
 503         struct hnae3_handle *ae_handle;
 504         u32 enet_ver;
 505         u32 port_id;
 506         struct net_device *netdev;
 507         struct device *dev;
 508         struct hns3_nic_ops ops;
 509
 510         /**
 511          * the cb for nic to manage the ring buffer, the first half of the
 512          * array is for tx_ring and vice versa for the second half
 513          */
 514         struct hns3_nic_ring_data *ring_data;
 515         struct hns3_enet_tqp_vector *tqp_vector;
 516         u16 vector_num;
 517
 518         /* The most recently read link state */
 519         int link;
 520         u64 tx_timeout_count;
 521         enum hnae3_reset_type reset_level;
 522         unsigned long last_reset_time;
 523
 524         unsigned long state;
 525
 526         struct timer_list service_timer;
 527
 528         struct work_struct service_task;
 529
 530         struct notifier_block notifier_block;
 531         /* Vxlan/Geneve information */
 532         struct hns3_udp_tunnel udp_tnl[HNS3_UDP_TNL_MAX];
 533 };
 534
 535 union l3_hdr_info {
 536         struct iphdr *v4;
 537         struct ipv6hdr *v6;
 538         unsigned char *hdr;
 539 };
 540
 541 union l4_hdr_info {
 542         struct tcphdr *tcp;
 543         struct udphdr *udp;
 544         unsigned char *hdr;
 545 };
 546
 547 /* the distance between [begin, end) in a ring buffer
 548  * note: there is a unuse slot between the begin and the end
 549  */
 550 static inline int ring_dist(struct hns3_enet_ring *ring, int begin, int end)
 551 {
 552         return (end - begin + ring->desc_num) % ring->desc_num;
 553 }
 554
 555 static inline int ring_space(struct hns3_enet_ring *ring)
 556 {
 557         return ring->desc_num -
 558                 ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;
 559 }
 560
 561 static inline int is_ring_empty(struct hns3_enet_ring *ring)
 562 {
 563         return ring->next_to_use == ring->next_to_clean;
 564 }
 565
 566 static inline void hns3_write_reg(void __iomem *base, u32 reg, u32 value)
 567 {
 568         u8 __iomem *reg_addr = READ_ONCE(base);
 569
 570         writel(value, reg_addr + reg);
 571 }
 572
 573 #define hns3_write_dev(a, reg, value) \
 574         hns3_write_reg((a)->io_base, (reg), (value))
 575
 576 #define hnae_queue_xmit(tqp, buf_num) writel_relaxed(buf_num, \
 577                 (tqp)->io_base + HNS3_RING_TX_RING_TAIL_REG)
 578
 579 #define ring_to_dev(ring) (&(ring)->tqp->handle->pdev->dev)
 580
 581 #define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \
 582         DMA_TO_DEVICE : DMA_FROM_DEVICE)
 583
 584 #define tx_ring_data(priv, idx) ((priv)->ring_data[idx])
 585
 586 #define hnae_buf_size(_ring) ((_ring)->buf_size)
 587 #define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring)))
 588 #define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring))
 589
 590 /* iterator for handling rings in ring group */
 591 #define hns3_for_each_ring(pos, head) \
 592         for (pos = (head).ring; pos; pos = pos->next)
 593
 594 #define hns3_get_handle(ndev) \
 595         (((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle)
 596
 597 void hns3_ethtool_set_ops(struct net_device *netdev);
 598
 599 bool hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget);
 600 int hns3_init_all_ring(struct hns3_nic_priv *priv);
 601 int hns3_uninit_all_ring(struct hns3_nic_priv *priv);
 602 netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
 603 int hns3_clean_rx_ring(
 604                 struct hns3_enet_ring *ring, int budget,
 605                 void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *));
 606
 607 #ifdef CONFIG_HNS3_DCB
 608 void hns3_dcbnl_setup(struct hnae3_handle *handle);
 609 #else
 610 static inline void hns3_dcbnl_setup(struct hnae3_handle *handle) {}
 611 #endif
 612
 613 #endif