1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 // Copyright (c) 2016-2017 Hisilicon Limited. 3 4 #ifndef __HNS3_ENET_H 5 #define __HNS3_ENET_H 6 7 #include <linux/dim.h> 8 #include <linux/if_vlan.h> 9 #include <net/page_pool.h> 10 #include <asm/barrier.h> 11 12 #include "hnae3.h" 13 14 struct iphdr; 15 struct ipv6hdr; 16 17 enum hns3_nic_state { 18 HNS3_NIC_STATE_TESTING, 19 HNS3_NIC_STATE_RESETTING, 20 HNS3_NIC_STATE_INITED, 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_HW_TX_CSUM_ENABLE, 28 HNS3_NIC_STATE_RXD_ADV_LAYOUT_ENABLE, 29 HNS3_NIC_STATE_TX_PUSH_ENABLE, 30 HNS3_NIC_STATE_MAX 31 }; 32 33 #define HNS3_MAX_PUSH_BD_NUM 2 34 35 #define HNS3_RING_RX_RING_BASEADDR_L_REG 0x00000 36 #define HNS3_RING_RX_RING_BASEADDR_H_REG 0x00004 37 #define HNS3_RING_RX_RING_BD_NUM_REG 0x00008 38 #define HNS3_RING_RX_RING_BD_LEN_REG 0x0000C 39 #define HNS3_RING_RX_RING_TAIL_REG 0x00018 40 #define HNS3_RING_RX_RING_HEAD_REG 0x0001C 41 #define HNS3_RING_RX_RING_FBDNUM_REG 0x00020 42 #define HNS3_RING_RX_RING_PKTNUM_RECORD_REG 0x0002C 43 44 #define HNS3_RING_TX_RING_BASEADDR_L_REG 0x00040 45 #define HNS3_RING_TX_RING_BASEADDR_H_REG 0x00044 46 #define HNS3_RING_TX_RING_BD_NUM_REG 0x00048 47 #define HNS3_RING_TX_RING_TC_REG 0x00050 48 #define HNS3_RING_TX_RING_TAIL_REG 0x00058 49 #define HNS3_RING_TX_RING_HEAD_REG 0x0005C 50 #define HNS3_RING_TX_RING_FBDNUM_REG 0x00060 51 #define HNS3_RING_TX_RING_OFFSET_REG 0x00064 52 #define HNS3_RING_TX_RING_EBDNUM_REG 0x00068 53 #define HNS3_RING_TX_RING_PKTNUM_RECORD_REG 0x0006C 54 #define HNS3_RING_TX_RING_EBD_OFFSET_REG 0x00070 55 #define HNS3_RING_TX_RING_BD_ERR_REG 0x00074 56 #define HNS3_RING_EN_REG 0x00090 57 #define HNS3_RING_RX_EN_REG 0x00098 58 #define HNS3_RING_TX_EN_REG 0x000D4 59 60 #define HNS3_RX_HEAD_SIZE 256 61 62 #define HNS3_TX_TIMEOUT (5 * HZ) 63 #define HNS3_RING_NAME_LEN 16 64 #define HNS3_BUFFER_SIZE_2048 2048 65 #define HNS3_RING_MAX_PENDING 32760 66 #define HNS3_RING_MIN_PENDING 72 67 #define HNS3_RING_BD_MULTIPLE 8 68 /* max frame size of mac */ 69 #define HNS3_MAX_MTU(max_frm_size) \ 70 ((max_frm_size) - (ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN)) 71 72 #define HNS3_BD_SIZE_512_TYPE 0 73 #define HNS3_BD_SIZE_1024_TYPE 1 74 #define HNS3_BD_SIZE_2048_TYPE 2 75 #define HNS3_BD_SIZE_4096_TYPE 3 76 77 #define HNS3_RX_FLAG_VLAN_PRESENT 0x1 78 #define HNS3_RX_FLAG_L3ID_IPV4 0x0 79 #define HNS3_RX_FLAG_L3ID_IPV6 0x1 80 #define HNS3_RX_FLAG_L4ID_UDP 0x0 81 #define HNS3_RX_FLAG_L4ID_TCP 0x1 82 83 #define HNS3_RXD_DMAC_S 0 84 #define HNS3_RXD_DMAC_M (0x3 << HNS3_RXD_DMAC_S) 85 #define HNS3_RXD_VLAN_S 2 86 #define HNS3_RXD_VLAN_M (0x3 << HNS3_RXD_VLAN_S) 87 #define HNS3_RXD_L3ID_S 4 88 #define HNS3_RXD_L3ID_M (0xf << HNS3_RXD_L3ID_S) 89 #define HNS3_RXD_L4ID_S 8 90 #define HNS3_RXD_L4ID_M (0xf << HNS3_RXD_L4ID_S) 91 #define HNS3_RXD_FRAG_B 12 92 #define HNS3_RXD_STRP_TAGP_S 13 93 #define HNS3_RXD_STRP_TAGP_M (0x3 << HNS3_RXD_STRP_TAGP_S) 94 95 #define HNS3_RXD_L2E_B 16 96 #define HNS3_RXD_L3E_B 17 97 #define HNS3_RXD_L4E_B 18 98 #define HNS3_RXD_TRUNCAT_B 19 99 #define HNS3_RXD_HOI_B 20 100 #define HNS3_RXD_DOI_B 21 101 #define HNS3_RXD_OL3E_B 22 102 #define HNS3_RXD_OL4E_B 23 103 #define HNS3_RXD_GRO_COUNT_S 24 104 #define HNS3_RXD_GRO_COUNT_M (0x3f << HNS3_RXD_GRO_COUNT_S) 105 #define HNS3_RXD_GRO_FIXID_B 30 106 #define HNS3_RXD_GRO_ECN_B 31 107 108 #define HNS3_RXD_ODMAC_S 0 109 #define HNS3_RXD_ODMAC_M (0x3 << HNS3_RXD_ODMAC_S) 110 #define HNS3_RXD_OVLAN_S 2 111 #define HNS3_RXD_OVLAN_M (0x3 << HNS3_RXD_OVLAN_S) 112 #define HNS3_RXD_OL3ID_S 4 113 #define HNS3_RXD_OL3ID_M (0xf << HNS3_RXD_OL3ID_S) 114 #define HNS3_RXD_OL4ID_S 8 115 #define HNS3_RXD_OL4ID_M (0xf << HNS3_RXD_OL4ID_S) 116 #define HNS3_RXD_FBHI_S 12 117 #define HNS3_RXD_FBHI_M (0x3 << HNS3_RXD_FBHI_S) 118 #define HNS3_RXD_FBLI_S 14 119 #define HNS3_RXD_FBLI_M (0x3 << HNS3_RXD_FBLI_S) 120 121 #define HNS3_RXD_PTYPE_S 4 122 #define HNS3_RXD_PTYPE_M GENMASK(11, 4) 123 124 #define HNS3_RXD_BDTYPE_S 0 125 #define HNS3_RXD_BDTYPE_M (0xf << HNS3_RXD_BDTYPE_S) 126 #define HNS3_RXD_VLD_B 4 127 #define HNS3_RXD_UDP0_B 5 128 #define HNS3_RXD_EXTEND_B 7 129 #define HNS3_RXD_FE_B 8 130 #define HNS3_RXD_LUM_B 9 131 #define HNS3_RXD_CRCP_B 10 132 #define HNS3_RXD_L3L4P_B 11 133 #define HNS3_RXD_TSIDX_S 12 134 #define HNS3_RXD_TSIDX_M (0x3 << HNS3_RXD_TSIDX_S) 135 #define HNS3_RXD_TS_VLD_B 14 136 #define HNS3_RXD_LKBK_B 15 137 #define HNS3_RXD_GRO_SIZE_S 16 138 #define HNS3_RXD_GRO_SIZE_M (0x3fff << HNS3_RXD_GRO_SIZE_S) 139 140 #define HNS3_TXD_L3T_S 0 141 #define HNS3_TXD_L3T_M (0x3 << HNS3_TXD_L3T_S) 142 #define HNS3_TXD_L4T_S 2 143 #define HNS3_TXD_L4T_M (0x3 << HNS3_TXD_L4T_S) 144 #define HNS3_TXD_L3CS_B 4 145 #define HNS3_TXD_L4CS_B 5 146 #define HNS3_TXD_VLAN_B 6 147 #define HNS3_TXD_TSO_B 7 148 149 #define HNS3_TXD_L2LEN_S 8 150 #define HNS3_TXD_L2LEN_M (0xff << HNS3_TXD_L2LEN_S) 151 #define HNS3_TXD_L3LEN_S 16 152 #define HNS3_TXD_L3LEN_M (0xff << HNS3_TXD_L3LEN_S) 153 #define HNS3_TXD_L4LEN_S 24 154 #define HNS3_TXD_L4LEN_M (0xff << HNS3_TXD_L4LEN_S) 155 156 #define HNS3_TXD_CSUM_START_S 8 157 #define HNS3_TXD_CSUM_START_M (0xffff << HNS3_TXD_CSUM_START_S) 158 159 #define HNS3_TXD_OL3T_S 0 160 #define HNS3_TXD_OL3T_M (0x3 << HNS3_TXD_OL3T_S) 161 #define HNS3_TXD_OVLAN_B 2 162 #define HNS3_TXD_MACSEC_B 3 163 #define HNS3_TXD_TUNTYPE_S 4 164 #define HNS3_TXD_TUNTYPE_M (0xf << HNS3_TXD_TUNTYPE_S) 165 166 #define HNS3_TXD_CSUM_OFFSET_S 8 167 #define HNS3_TXD_CSUM_OFFSET_M (0xffff << HNS3_TXD_CSUM_OFFSET_S) 168 169 #define HNS3_TXD_BDTYPE_S 0 170 #define HNS3_TXD_BDTYPE_M (0xf << HNS3_TXD_BDTYPE_S) 171 #define HNS3_TXD_FE_B 4 172 #define HNS3_TXD_SC_S 5 173 #define HNS3_TXD_SC_M (0x3 << HNS3_TXD_SC_S) 174 #define HNS3_TXD_EXTEND_B 7 175 #define HNS3_TXD_VLD_B 8 176 #define HNS3_TXD_RI_B 9 177 #define HNS3_TXD_RA_B 10 178 #define HNS3_TXD_TSYN_B 11 179 #define HNS3_TXD_DECTTL_S 12 180 #define HNS3_TXD_DECTTL_M (0xf << HNS3_TXD_DECTTL_S) 181 182 #define HNS3_TXD_OL4CS_B 22 183 184 #define HNS3_TXD_MSS_S 0 185 #define HNS3_TXD_MSS_M (0x3fff << HNS3_TXD_MSS_S) 186 #define HNS3_TXD_HW_CS_B 14 187 188 #define HNS3_VECTOR_TX_IRQ BIT_ULL(0) 189 #define HNS3_VECTOR_RX_IRQ BIT_ULL(1) 190 191 #define HNS3_VECTOR_NOT_INITED 0 192 #define HNS3_VECTOR_INITED 1 193 194 #define HNS3_MAX_BD_SIZE 65535 195 #define HNS3_MAX_TSO_BD_NUM 63U 196 #define HNS3_MAX_TSO_SIZE 1048576U 197 #define HNS3_MAX_NON_TSO_SIZE 9728U 198 199 #define HNS3_VECTOR_GL_MASK GENMASK(11, 0) 200 #define HNS3_VECTOR_GL0_OFFSET 0x100 201 #define HNS3_VECTOR_GL1_OFFSET 0x200 202 #define HNS3_VECTOR_GL2_OFFSET 0x300 203 #define HNS3_VECTOR_RL_OFFSET 0x900 204 #define HNS3_VECTOR_RL_EN_B 6 205 #define HNS3_VECTOR_QL_MASK GENMASK(9, 0) 206 #define HNS3_VECTOR_TX_QL_OFFSET 0xe00 207 #define HNS3_VECTOR_RX_QL_OFFSET 0xf00 208 209 #define HNS3_RING_EN_B 0 210 211 #define HNS3_GL0_CQ_MODE_REG 0x20d00 212 #define HNS3_GL1_CQ_MODE_REG 0x20d04 213 #define HNS3_GL2_CQ_MODE_REG 0x20d08 214 #define HNS3_CQ_MODE_EQE 1U 215 #define HNS3_CQ_MODE_CQE 0U 216 217 enum hns3_pkt_l2t_type { 218 HNS3_L2_TYPE_UNICAST, 219 HNS3_L2_TYPE_MULTICAST, 220 HNS3_L2_TYPE_BROADCAST, 221 HNS3_L2_TYPE_INVALID, 222 }; 223 224 enum hns3_pkt_l3t_type { 225 HNS3_L3T_NONE, 226 HNS3_L3T_IPV6, 227 HNS3_L3T_IPV4, 228 HNS3_L3T_RESERVED 229 }; 230 231 enum hns3_pkt_l4t_type { 232 HNS3_L4T_UNKNOWN, 233 HNS3_L4T_TCP, 234 HNS3_L4T_UDP, 235 HNS3_L4T_SCTP 236 }; 237 238 enum hns3_pkt_ol3t_type { 239 HNS3_OL3T_NONE, 240 HNS3_OL3T_IPV6, 241 HNS3_OL3T_IPV4_NO_CSUM, 242 HNS3_OL3T_IPV4_CSUM 243 }; 244 245 enum hns3_pkt_tun_type { 246 HNS3_TUN_NONE, 247 HNS3_TUN_MAC_IN_UDP, 248 HNS3_TUN_NVGRE, 249 HNS3_TUN_OTHER 250 }; 251 252 /* hardware spec ring buffer format */ 253 struct __packed hns3_desc { 254 union { 255 __le64 addr; 256 __le16 csum; 257 struct { 258 __le32 ts_nsec; 259 __le32 ts_sec; 260 }; 261 }; 262 union { 263 struct { 264 __le16 vlan_tag; 265 __le16 send_size; 266 union { 267 __le32 type_cs_vlan_tso_len; 268 struct { 269 __u8 type_cs_vlan_tso; 270 __u8 l2_len; 271 __u8 l3_len; 272 __u8 l4_len; 273 }; 274 }; 275 __le16 outer_vlan_tag; 276 __le16 tv; 277 278 union { 279 __le32 ol_type_vlan_len_msec; 280 struct { 281 __u8 ol_type_vlan_msec; 282 __u8 ol2_len; 283 __u8 ol3_len; 284 __u8 ol4_len; 285 }; 286 }; 287 288 __le32 paylen_ol4cs; 289 __le16 bdtp_fe_sc_vld_ra_ri; 290 __le16 mss_hw_csum; 291 } tx; 292 293 struct { 294 __le32 l234_info; 295 __le16 pkt_len; 296 __le16 size; 297 298 __le32 rss_hash; 299 __le16 fd_id; 300 __le16 vlan_tag; 301 302 union { 303 __le32 ol_info; 304 struct { 305 __le16 o_dm_vlan_id_fb; 306 __le16 ot_vlan_tag; 307 }; 308 }; 309 310 __le32 bd_base_info; 311 } rx; 312 }; 313 }; 314 315 enum hns3_desc_type { 316 DESC_TYPE_UNKNOWN = 0, 317 DESC_TYPE_SKB = 1 << 0, 318 DESC_TYPE_FRAGLIST_SKB = 1 << 1, 319 DESC_TYPE_PAGE = 1 << 2, 320 DESC_TYPE_BOUNCE_ALL = 1 << 3, 321 DESC_TYPE_BOUNCE_HEAD = 1 << 4, 322 DESC_TYPE_SGL_SKB = 1 << 5, 323 DESC_TYPE_PP_FRAG = 1 << 6, 324 }; 325 326 struct hns3_desc_cb { 327 dma_addr_t dma; /* dma address of this desc */ 328 void *buf; /* cpu addr for a desc */ 329 330 /* priv data for the desc, e.g. skb when use with ip stack */ 331 void *priv; 332 333 union { 334 u32 page_offset; /* for rx */ 335 u32 send_bytes; /* for tx */ 336 }; 337 338 u32 length; /* length of the buffer */ 339 340 u16 reuse_flag; 341 u16 refill; 342 343 /* desc type, used by the ring user to mark the type of the priv data */ 344 u16 type; 345 u16 pagecnt_bias; 346 }; 347 348 enum hns3_pkt_l3type { 349 HNS3_L3_TYPE_IPV4, 350 HNS3_L3_TYPE_IPV6, 351 HNS3_L3_TYPE_ARP, 352 HNS3_L3_TYPE_RARP, 353 HNS3_L3_TYPE_IPV4_OPT, 354 HNS3_L3_TYPE_IPV6_EXT, 355 HNS3_L3_TYPE_LLDP, 356 HNS3_L3_TYPE_BPDU, 357 HNS3_L3_TYPE_MAC_PAUSE, 358 HNS3_L3_TYPE_PFC_PAUSE, /* 0x9 */ 359 360 /* reserved for 0xA~0xB */ 361 362 HNS3_L3_TYPE_CNM = 0xc, 363 364 /* reserved for 0xD~0xE */ 365 366 HNS3_L3_TYPE_PARSE_FAIL = 0xf /* must be last */ 367 }; 368 369 enum hns3_pkt_l4type { 370 HNS3_L4_TYPE_UDP, 371 HNS3_L4_TYPE_TCP, 372 HNS3_L4_TYPE_GRE, 373 HNS3_L4_TYPE_SCTP, 374 HNS3_L4_TYPE_IGMP, 375 HNS3_L4_TYPE_ICMP, 376 377 /* reserved for 0x6~0xE */ 378 379 HNS3_L4_TYPE_PARSE_FAIL = 0xf /* must be last */ 380 }; 381 382 enum hns3_pkt_ol3type { 383 HNS3_OL3_TYPE_IPV4 = 0, 384 HNS3_OL3_TYPE_IPV6, 385 /* reserved for 0x2~0x3 */ 386 HNS3_OL3_TYPE_IPV4_OPT = 4, 387 HNS3_OL3_TYPE_IPV6_EXT, 388 389 /* reserved for 0x6~0xE */ 390 391 HNS3_OL3_TYPE_PARSE_FAIL = 0xf /* must be last */ 392 }; 393 394 enum hns3_pkt_ol4type { 395 HNS3_OL4_TYPE_NO_TUN, 396 HNS3_OL4_TYPE_MAC_IN_UDP, 397 HNS3_OL4_TYPE_NVGRE, 398 HNS3_OL4_TYPE_UNKNOWN 399 }; 400 401 struct hns3_rx_ptype { 402 u32 ptype : 8; 403 u32 csum_level : 2; 404 u32 ip_summed : 2; 405 u32 l3_type : 4; 406 u32 valid : 1; 407 }; 408 409 struct ring_stats { 410 u64 sw_err_cnt; 411 u64 seg_pkt_cnt; 412 union { 413 struct { 414 u64 tx_pkts; 415 u64 tx_bytes; 416 u64 tx_more; 417 u64 tx_push; 418 u64 tx_mem_doorbell; 419 u64 restart_queue; 420 u64 tx_busy; 421 u64 tx_copy; 422 u64 tx_vlan_err; 423 u64 tx_l4_proto_err; 424 u64 tx_l2l3l4_err; 425 u64 tx_tso_err; 426 u64 over_max_recursion; 427 u64 hw_limitation; 428 u64 tx_bounce; 429 u64 tx_spare_full; 430 u64 copy_bits_err; 431 u64 tx_sgl; 432 u64 skb2sgl_err; 433 u64 map_sg_err; 434 }; 435 struct { 436 u64 rx_pkts; 437 u64 rx_bytes; 438 u64 rx_err_cnt; 439 u64 reuse_pg_cnt; 440 u64 err_pkt_len; 441 u64 err_bd_num; 442 u64 l2_err; 443 u64 l3l4_csum_err; 444 u64 csum_complete; 445 u64 rx_multicast; 446 u64 non_reuse_pg; 447 u64 frag_alloc_err; 448 u64 frag_alloc; 449 }; 450 __le16 csum; 451 }; 452 }; 453 454 struct hns3_tx_spare { 455 dma_addr_t dma; 456 void *buf; 457 u32 next_to_use; 458 u32 next_to_clean; 459 u32 last_to_clean; 460 u32 len; 461 }; 462 463 struct hns3_enet_ring { 464 struct hns3_desc *desc; /* dma map address space */ 465 struct hns3_desc_cb *desc_cb; 466 struct hns3_enet_ring *next; 467 struct hns3_enet_tqp_vector *tqp_vector; 468 struct hnae3_queue *tqp; 469 int queue_index; 470 struct device *dev; /* will be used for DMA mapping of descriptors */ 471 struct page_pool *page_pool; 472 473 /* statistic */ 474 struct ring_stats stats; 475 struct u64_stats_sync syncp; 476 477 dma_addr_t desc_dma_addr; 478 u32 buf_size; /* size for hnae_desc->addr, preset by AE */ 479 u16 desc_num; /* total number of desc */ 480 int next_to_use; /* idx of next spare desc */ 481 482 /* idx of lastest sent desc, the ring is empty when equal to 483 * next_to_use 484 */ 485 int next_to_clean; 486 u32 flag; /* ring attribute */ 487 488 int pending_buf; 489 union { 490 /* for Tx ring */ 491 struct { 492 u32 fd_qb_tx_sample; 493 int last_to_use; /* last idx used by xmit */ 494 u32 tx_copybreak; 495 struct hns3_tx_spare *tx_spare; 496 }; 497 498 /* for Rx ring */ 499 struct { 500 u32 pull_len; /* memcpy len for current rx packet */ 501 u32 rx_copybreak; 502 u32 frag_num; 503 /* first buffer address for current packet */ 504 unsigned char *va; 505 struct sk_buff *skb; 506 struct sk_buff *tail_skb; 507 }; 508 }; 509 } ____cacheline_internodealigned_in_smp; 510 511 enum hns3_flow_level_range { 512 HNS3_FLOW_LOW = 0, 513 HNS3_FLOW_MID = 1, 514 HNS3_FLOW_HIGH = 2, 515 HNS3_FLOW_ULTRA = 3, 516 }; 517 518 #define HNS3_INT_GL_50K 0x0014 519 #define HNS3_INT_GL_20K 0x0032 520 #define HNS3_INT_GL_18K 0x0036 521 #define HNS3_INT_GL_8K 0x007C 522 523 #define HNS3_INT_GL_1US BIT(31) 524 525 #define HNS3_INT_RL_MAX 0x00EC 526 #define HNS3_INT_RL_ENABLE_MASK 0x40 527 528 #define HNS3_INT_QL_DEFAULT_CFG 0x20 529 530 struct hns3_enet_coalesce { 531 u16 int_gl; 532 u16 int_ql; 533 u16 int_ql_max; 534 u8 adapt_enable : 1; 535 u8 ql_enable : 1; 536 u8 unit_1us : 1; 537 enum hns3_flow_level_range flow_level; 538 }; 539 540 struct hns3_enet_ring_group { 541 /* array of pointers to rings */ 542 struct hns3_enet_ring *ring; 543 u64 total_bytes; /* total bytes processed this group */ 544 u64 total_packets; /* total packets processed this group */ 545 u16 count; 546 struct hns3_enet_coalesce coal; 547 struct dim dim; 548 }; 549 550 struct hns3_enet_tqp_vector { 551 struct hnae3_handle *handle; 552 u8 __iomem *mask_addr; 553 int vector_irq; 554 int irq_init_flag; 555 556 u16 idx; /* index in the TQP vector array per handle. */ 557 558 struct napi_struct napi; 559 560 struct hns3_enet_ring_group rx_group; 561 struct hns3_enet_ring_group tx_group; 562 563 cpumask_t affinity_mask; 564 u16 num_tqps; /* total number of tqps in TQP vector */ 565 struct irq_affinity_notify affinity_notify; 566 567 char name[HNAE3_INT_NAME_LEN]; 568 569 u64 event_cnt; 570 } ____cacheline_internodealigned_in_smp; 571 572 struct hns3_nic_priv { 573 struct hnae3_handle *ae_handle; 574 struct net_device *netdev; 575 struct device *dev; 576 577 /** 578 * the cb for nic to manage the ring buffer, the first half of the 579 * array is for tx_ring and vice versa for the second half 580 */ 581 struct hns3_enet_ring *ring; 582 struct hns3_enet_tqp_vector *tqp_vector; 583 u16 vector_num; 584 u8 max_non_tso_bd_num; 585 586 u64 tx_timeout_count; 587 588 unsigned long state; 589 590 enum dim_cq_period_mode tx_cqe_mode; 591 enum dim_cq_period_mode rx_cqe_mode; 592 struct hns3_enet_coalesce tx_coal; 593 struct hns3_enet_coalesce rx_coal; 594 u32 tx_copybreak; 595 u32 rx_copybreak; 596 }; 597 598 union l3_hdr_info { 599 struct iphdr *v4; 600 struct ipv6hdr *v6; 601 unsigned char *hdr; 602 }; 603 604 union l4_hdr_info { 605 struct tcphdr *tcp; 606 struct udphdr *udp; 607 struct gre_base_hdr *gre; 608 unsigned char *hdr; 609 }; 610 611 struct hns3_hw_error_info { 612 enum hnae3_hw_error_type type; 613 const char *msg; 614 }; 615 616 struct hns3_reset_type_map { 617 enum ethtool_reset_flags rst_flags; 618 enum hnae3_reset_type rst_type; 619 }; 620 621 static inline int ring_space(struct hns3_enet_ring *ring) 622 { 623 /* This smp_load_acquire() pairs with smp_store_release() in 624 * hns3_nic_reclaim_one_desc called by hns3_clean_tx_ring. 625 */ 626 int begin = smp_load_acquire(&ring->next_to_clean); 627 int end = READ_ONCE(ring->next_to_use); 628 629 return ((end >= begin) ? (ring->desc_num - end + begin) : 630 (begin - end)) - 1; 631 } 632 633 static inline u32 hns3_tqp_read_reg(struct hns3_enet_ring *ring, u32 reg) 634 { 635 return readl_relaxed(ring->tqp->io_base + reg); 636 } 637 638 static inline u32 hns3_read_reg(void __iomem *base, u32 reg) 639 { 640 return readl(base + reg); 641 } 642 643 static inline void hns3_write_reg(void __iomem *base, u32 reg, u32 value) 644 { 645 u8 __iomem *reg_addr = READ_ONCE(base); 646 647 writel(value, reg_addr + reg); 648 } 649 650 #define hns3_read_dev(a, reg) \ 651 hns3_read_reg((a)->io_base, reg) 652 653 static inline bool hns3_nic_resetting(struct net_device *netdev) 654 { 655 struct hns3_nic_priv *priv = netdev_priv(netdev); 656 657 return test_bit(HNS3_NIC_STATE_RESETTING, &priv->state); 658 } 659 660 #define hns3_write_dev(a, reg, value) \ 661 hns3_write_reg((a)->io_base, reg, value) 662 663 #define ring_to_dev(ring) ((ring)->dev) 664 665 #define ring_to_netdev(ring) ((ring)->tqp_vector->napi.dev) 666 667 #define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \ 668 DMA_TO_DEVICE : DMA_FROM_DEVICE) 669 670 #define hns3_buf_size(_ring) ((_ring)->buf_size) 671 672 #define hns3_ring_stats_update(ring, cnt) do { \ 673 typeof(ring) (tmp) = (ring); \ 674 u64_stats_update_begin(&(tmp)->syncp); \ 675 ((tmp)->stats.cnt)++; \ 676 u64_stats_update_end(&(tmp)->syncp); \ 677 } while (0) \ 678 679 static inline unsigned int hns3_page_order(struct hns3_enet_ring *ring) 680 { 681 #if (PAGE_SIZE < 8192) 682 if (ring->buf_size > (PAGE_SIZE / 2)) 683 return 1; 684 #endif 685 return 0; 686 } 687 688 #define hns3_page_size(_ring) (PAGE_SIZE << hns3_page_order(_ring)) 689 690 /* iterator for handling rings in ring group */ 691 #define hns3_for_each_ring(pos, head) \ 692 for (pos = (head).ring; (pos); pos = (pos)->next) 693 694 #define hns3_get_handle(ndev) \ 695 (((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle) 696 697 #define hns3_gl_usec_to_reg(int_gl) ((int_gl) >> 1) 698 #define hns3_gl_round_down(int_gl) round_down(int_gl, 2) 699 700 #define hns3_rl_usec_to_reg(int_rl) ((int_rl) >> 2) 701 #define hns3_rl_round_down(int_rl) round_down(int_rl, 4) 702 703 void hns3_ethtool_set_ops(struct net_device *netdev); 704 int hns3_set_channels(struct net_device *netdev, 705 struct ethtool_channels *ch); 706 707 void hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget); 708 int hns3_init_all_ring(struct hns3_nic_priv *priv); 709 int hns3_nic_reset_all_ring(struct hnae3_handle *h); 710 void hns3_fini_ring(struct hns3_enet_ring *ring); 711 netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev); 712 bool hns3_is_phys_func(struct pci_dev *pdev); 713 int hns3_clean_rx_ring( 714 struct hns3_enet_ring *ring, int budget, 715 void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *)); 716 717 void hns3_set_vector_coalesce_rx_gl(struct hns3_enet_tqp_vector *tqp_vector, 718 u32 gl_value); 719 void hns3_set_vector_coalesce_tx_gl(struct hns3_enet_tqp_vector *tqp_vector, 720 u32 gl_value); 721 void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector, 722 u32 rl_value); 723 void hns3_set_vector_coalesce_rx_ql(struct hns3_enet_tqp_vector *tqp_vector, 724 u32 ql_value); 725 void hns3_set_vector_coalesce_tx_ql(struct hns3_enet_tqp_vector *tqp_vector, 726 u32 ql_value); 727 728 void hns3_request_update_promisc_mode(struct hnae3_handle *handle); 729 int hns3_reset_notify(struct hnae3_handle *handle, 730 enum hnae3_reset_notify_type type); 731 732 #ifdef CONFIG_HNS3_DCB 733 void hns3_dcbnl_setup(struct hnae3_handle *handle); 734 #else 735 static inline void hns3_dcbnl_setup(struct hnae3_handle *handle) {} 736 #endif 737 738 int hns3_dbg_init(struct hnae3_handle *handle); 739 void hns3_dbg_uninit(struct hnae3_handle *handle); 740 void hns3_dbg_register_debugfs(const char *debugfs_dir_name); 741 void hns3_dbg_unregister_debugfs(void); 742 void hns3_shinfo_pack(struct skb_shared_info *shinfo, __u32 *size); 743 u16 hns3_get_max_available_channels(struct hnae3_handle *h); 744 void hns3_cq_period_mode_init(struct hns3_nic_priv *priv, 745 enum dim_cq_period_mode tx_mode, 746 enum dim_cq_period_mode rx_mode); 747 748 void hns3_external_lb_prepare(struct net_device *ndev, bool if_running); 749 void hns3_external_lb_restore(struct net_device *ndev, bool if_running); 750 #endif 751