1 /* QLogic qede NIC Driver 2 * Copyright (c) 2015-2017 QLogic Corporation 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and /or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #ifndef _QEDE_H_ 33 #define _QEDE_H_ 34 #include <linux/compiler.h> 35 #include <linux/version.h> 36 #include <linux/workqueue.h> 37 #include <linux/netdevice.h> 38 #include <linux/interrupt.h> 39 #include <linux/bitmap.h> 40 #include <linux/kernel.h> 41 #include <linux/mutex.h> 42 #include <linux/bpf.h> 43 #include <net/xdp.h> 44 #include <linux/qed/qede_rdma.h> 45 #include <linux/io.h> 46 #ifdef CONFIG_RFS_ACCEL 47 #include <linux/cpu_rmap.h> 48 #endif 49 #include <linux/qed/common_hsi.h> 50 #include <linux/qed/eth_common.h> 51 #include <linux/qed/qed_if.h> 52 #include <linux/qed/qed_chain.h> 53 #include <linux/qed/qed_eth_if.h> 54 55 #include <net/pkt_cls.h> 56 #include <net/tc_act/tc_gact.h> 57 58 #define QEDE_MAJOR_VERSION 8 59 #define QEDE_MINOR_VERSION 33 60 #define QEDE_REVISION_VERSION 0 61 #define QEDE_ENGINEERING_VERSION 20 62 #define DRV_MODULE_VERSION __stringify(QEDE_MAJOR_VERSION) "." \ 63 __stringify(QEDE_MINOR_VERSION) "." \ 64 __stringify(QEDE_REVISION_VERSION) "." \ 65 __stringify(QEDE_ENGINEERING_VERSION) 66 67 #define DRV_MODULE_SYM qede 68 69 struct qede_stats_common { 70 u64 no_buff_discards; 71 u64 packet_too_big_discard; 72 u64 ttl0_discard; 73 u64 rx_ucast_bytes; 74 u64 rx_mcast_bytes; 75 u64 rx_bcast_bytes; 76 u64 rx_ucast_pkts; 77 u64 rx_mcast_pkts; 78 u64 rx_bcast_pkts; 79 u64 mftag_filter_discards; 80 u64 mac_filter_discards; 81 u64 gft_filter_drop; 82 u64 tx_ucast_bytes; 83 u64 tx_mcast_bytes; 84 u64 tx_bcast_bytes; 85 u64 tx_ucast_pkts; 86 u64 tx_mcast_pkts; 87 u64 tx_bcast_pkts; 88 u64 tx_err_drop_pkts; 89 u64 coalesced_pkts; 90 u64 coalesced_events; 91 u64 coalesced_aborts_num; 92 u64 non_coalesced_pkts; 93 u64 coalesced_bytes; 94 u64 link_change_count; 95 96 /* port */ 97 u64 rx_64_byte_packets; 98 u64 rx_65_to_127_byte_packets; 99 u64 rx_128_to_255_byte_packets; 100 u64 rx_256_to_511_byte_packets; 101 u64 rx_512_to_1023_byte_packets; 102 u64 rx_1024_to_1518_byte_packets; 103 u64 rx_crc_errors; 104 u64 rx_mac_crtl_frames; 105 u64 rx_pause_frames; 106 u64 rx_pfc_frames; 107 u64 rx_align_errors; 108 u64 rx_carrier_errors; 109 u64 rx_oversize_packets; 110 u64 rx_jabbers; 111 u64 rx_undersize_packets; 112 u64 rx_fragments; 113 u64 tx_64_byte_packets; 114 u64 tx_65_to_127_byte_packets; 115 u64 tx_128_to_255_byte_packets; 116 u64 tx_256_to_511_byte_packets; 117 u64 tx_512_to_1023_byte_packets; 118 u64 tx_1024_to_1518_byte_packets; 119 u64 tx_pause_frames; 120 u64 tx_pfc_frames; 121 u64 brb_truncates; 122 u64 brb_discards; 123 u64 tx_mac_ctrl_frames; 124 }; 125 126 struct qede_stats_bb { 127 u64 rx_1519_to_1522_byte_packets; 128 u64 rx_1519_to_2047_byte_packets; 129 u64 rx_2048_to_4095_byte_packets; 130 u64 rx_4096_to_9216_byte_packets; 131 u64 rx_9217_to_16383_byte_packets; 132 u64 tx_1519_to_2047_byte_packets; 133 u64 tx_2048_to_4095_byte_packets; 134 u64 tx_4096_to_9216_byte_packets; 135 u64 tx_9217_to_16383_byte_packets; 136 u64 tx_lpi_entry_count; 137 u64 tx_total_collisions; 138 }; 139 140 struct qede_stats_ah { 141 u64 rx_1519_to_max_byte_packets; 142 u64 tx_1519_to_max_byte_packets; 143 }; 144 145 struct qede_stats { 146 struct qede_stats_common common; 147 148 union { 149 struct qede_stats_bb bb; 150 struct qede_stats_ah ah; 151 }; 152 }; 153 154 struct qede_vlan { 155 struct list_head list; 156 u16 vid; 157 bool configured; 158 }; 159 160 struct qede_rdma_dev { 161 struct qedr_dev *qedr_dev; 162 struct list_head entry; 163 struct list_head rdma_event_list; 164 struct workqueue_struct *rdma_wq; 165 }; 166 167 struct qede_ptp; 168 169 #define QEDE_RFS_MAX_FLTR 256 170 171 struct qede_dev { 172 struct qed_dev *cdev; 173 struct net_device *ndev; 174 struct pci_dev *pdev; 175 176 u32 dp_module; 177 u8 dp_level; 178 179 unsigned long flags; 180 #define QEDE_FLAG_IS_VF BIT(0) 181 #define IS_VF(edev) (!!((edev)->flags & QEDE_FLAG_IS_VF)) 182 #define QEDE_TX_TIMESTAMPING_EN BIT(1) 183 #define QEDE_FLAGS_PTP_TX_IN_PRORGESS BIT(2) 184 185 const struct qed_eth_ops *ops; 186 struct qede_ptp *ptp; 187 188 struct qed_dev_eth_info dev_info; 189 #define QEDE_MAX_RSS_CNT(edev) ((edev)->dev_info.num_queues) 190 #define QEDE_MAX_TSS_CNT(edev) ((edev)->dev_info.num_queues) 191 #define QEDE_IS_BB(edev) \ 192 ((edev)->dev_info.common.dev_type == QED_DEV_TYPE_BB) 193 #define QEDE_IS_AH(edev) \ 194 ((edev)->dev_info.common.dev_type == QED_DEV_TYPE_AH) 195 196 struct qede_fastpath *fp_array; 197 u8 req_num_tx; 198 u8 fp_num_tx; 199 u8 req_num_rx; 200 u8 fp_num_rx; 201 u16 req_queues; 202 u16 num_queues; 203 #define QEDE_QUEUE_CNT(edev) ((edev)->num_queues) 204 #define QEDE_RSS_COUNT(edev) ((edev)->num_queues - (edev)->fp_num_tx) 205 #define QEDE_RX_QUEUE_IDX(edev, i) (i) 206 #define QEDE_TSS_COUNT(edev) ((edev)->num_queues - (edev)->fp_num_rx) 207 208 struct qed_int_info int_info; 209 210 /* Smaller private varaiant of the RTNL lock */ 211 struct mutex qede_lock; 212 u32 state; /* Protected by qede_lock */ 213 u16 rx_buf_size; 214 u32 rx_copybreak; 215 216 /* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */ 217 #define ETH_OVERHEAD (ETH_HLEN + 8 + 8) 218 /* Max supported alignment is 256 (8 shift) 219 * minimal alignment shift 6 is optimal for 57xxx HW performance 220 */ 221 #define QEDE_RX_ALIGN_SHIFT max(6, min(8, L1_CACHE_SHIFT)) 222 /* We assume skb_build() uses sizeof(struct skb_shared_info) bytes 223 * at the end of skb->data, to avoid wasting a full cache line. 224 * This reduces memory use (skb->truesize). 225 */ 226 #define QEDE_FW_RX_ALIGN_END \ 227 max_t(u64, 1UL << QEDE_RX_ALIGN_SHIFT, \ 228 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) 229 230 struct qede_stats stats; 231 #define QEDE_RSS_INDIR_INITED BIT(0) 232 #define QEDE_RSS_KEY_INITED BIT(1) 233 #define QEDE_RSS_CAPS_INITED BIT(2) 234 u32 rss_params_inited; /* bit-field to track initialized rss params */ 235 u16 rss_ind_table[128]; 236 u32 rss_key[10]; 237 u8 rss_caps; 238 239 u16 q_num_rx_buffers; /* Must be a power of two */ 240 u16 q_num_tx_buffers; /* Must be a power of two */ 241 242 bool gro_disable; 243 struct list_head vlan_list; 244 u16 configured_vlans; 245 u16 non_configured_vlans; 246 bool accept_any_vlan; 247 struct delayed_work sp_task; 248 unsigned long sp_flags; 249 u16 vxlan_dst_port; 250 u16 geneve_dst_port; 251 252 struct qede_arfs *arfs; 253 bool wol_enabled; 254 255 struct qede_rdma_dev rdma_info; 256 257 struct bpf_prog *xdp_prog; 258 }; 259 260 enum QEDE_STATE { 261 QEDE_STATE_CLOSED, 262 QEDE_STATE_OPEN, 263 }; 264 265 #define HILO_U64(hi, lo) ((((u64)(hi)) << 32) + (lo)) 266 267 #define MAX_NUM_TC 8 268 #define MAX_NUM_PRI 8 269 270 /* The driver supports the new build_skb() API: 271 * RX ring buffer contains pointer to kmalloc() data only, 272 * skb are built only after the frame was DMA-ed. 273 */ 274 struct sw_rx_data { 275 struct page *data; 276 dma_addr_t mapping; 277 unsigned int page_offset; 278 }; 279 280 enum qede_agg_state { 281 QEDE_AGG_STATE_NONE = 0, 282 QEDE_AGG_STATE_START = 1, 283 QEDE_AGG_STATE_ERROR = 2 284 }; 285 286 struct qede_agg_info { 287 /* rx_buf is a data buffer that can be placed / consumed from rx bd 288 * chain. It has two purposes: We will preallocate the data buffer 289 * for each aggregation when we open the interface and will place this 290 * buffer on the rx-bd-ring when we receive TPA_START. We don't want 291 * to be in a state where allocation fails, as we can't reuse the 292 * consumer buffer in the rx-chain since FW may still be writing to it 293 * (since header needs to be modified for TPA). 294 * The second purpose is to keep a pointer to the bd buffer during 295 * aggregation. 296 */ 297 struct sw_rx_data buffer; 298 struct sk_buff *skb; 299 300 /* We need some structs from the start cookie until termination */ 301 u16 vlan_tag; 302 303 bool tpa_start_fail; 304 u8 state; 305 u8 frag_id; 306 307 u8 tunnel_type; 308 }; 309 310 struct qede_rx_queue { 311 __le16 *hw_cons_ptr; 312 void __iomem *hw_rxq_prod_addr; 313 314 /* Required for the allocation of replacement buffers */ 315 struct device *dev; 316 317 struct bpf_prog *xdp_prog; 318 319 u16 sw_rx_cons; 320 u16 sw_rx_prod; 321 322 u16 filled_buffers; 323 u8 data_direction; 324 u8 rxq_id; 325 326 /* Used once per each NAPI run */ 327 u16 num_rx_buffers; 328 329 u16 rx_headroom; 330 331 u32 rx_buf_size; 332 u32 rx_buf_seg_size; 333 334 struct sw_rx_data *sw_rx_ring; 335 struct qed_chain rx_bd_ring; 336 struct qed_chain rx_comp_ring ____cacheline_aligned; 337 338 /* GRO */ 339 struct qede_agg_info tpa_info[ETH_TPA_MAX_AGGS_NUM]; 340 341 /* Used once per each NAPI run */ 342 u64 rcv_pkts; 343 344 u64 rx_hw_errors; 345 u64 rx_alloc_errors; 346 u64 rx_ip_frags; 347 348 u64 xdp_no_pass; 349 350 void *handle; 351 struct xdp_rxq_info xdp_rxq; 352 }; 353 354 union db_prod { 355 struct eth_db_data data; 356 u32 raw; 357 }; 358 359 struct sw_tx_bd { 360 struct sk_buff *skb; 361 u8 flags; 362 /* Set on the first BD descriptor when there is a split BD */ 363 #define QEDE_TSO_SPLIT_BD BIT(0) 364 }; 365 366 struct sw_tx_xdp { 367 struct page *page; 368 dma_addr_t mapping; 369 }; 370 371 struct qede_tx_queue { 372 u8 is_xdp; 373 bool is_legacy; 374 u16 sw_tx_cons; 375 u16 sw_tx_prod; 376 u16 num_tx_buffers; /* Slowpath only */ 377 378 u64 xmit_pkts; 379 u64 stopped_cnt; 380 381 __le16 *hw_cons_ptr; 382 383 /* Needed for the mapping of packets */ 384 struct device *dev; 385 386 void __iomem *doorbell_addr; 387 union db_prod tx_db; 388 int index; /* Slowpath only */ 389 #define QEDE_TXQ_XDP_TO_IDX(edev, txq) ((txq)->index - \ 390 QEDE_MAX_TSS_CNT(edev)) 391 #define QEDE_TXQ_IDX_TO_XDP(edev, idx) ((idx) + QEDE_MAX_TSS_CNT(edev)) 392 #define QEDE_NDEV_TXQ_ID_TO_FP_ID(edev, idx) ((edev)->fp_num_rx + \ 393 ((idx) % QEDE_TSS_COUNT(edev))) 394 #define QEDE_NDEV_TXQ_ID_TO_TXQ_COS(edev, idx) ((idx) / QEDE_TSS_COUNT(edev)) 395 #define QEDE_TXQ_TO_NDEV_TXQ_ID(edev, txq) ((QEDE_TSS_COUNT(edev) * \ 396 (txq)->cos) + (txq)->index) 397 #define QEDE_NDEV_TXQ_ID_TO_TXQ(edev, idx) \ 398 (&((edev)->fp_array[QEDE_NDEV_TXQ_ID_TO_FP_ID(edev, idx)].txq \ 399 [QEDE_NDEV_TXQ_ID_TO_TXQ_COS(edev, idx)])) 400 #define QEDE_FP_TC0_TXQ(fp) (&((fp)->txq[0])) 401 402 /* Regular Tx requires skb + metadata for release purpose, 403 * while XDP requires the pages and the mapped address. 404 */ 405 union { 406 struct sw_tx_bd *skbs; 407 struct sw_tx_xdp *xdp; 408 } sw_tx_ring; 409 410 struct qed_chain tx_pbl; 411 412 /* Slowpath; Should be kept in end [unless missing padding] */ 413 void *handle; 414 u16 cos; 415 u16 ndev_txq_id; 416 }; 417 418 #define BD_UNMAP_ADDR(bd) HILO_U64(le32_to_cpu((bd)->addr.hi), \ 419 le32_to_cpu((bd)->addr.lo)) 420 #define BD_SET_UNMAP_ADDR_LEN(bd, maddr, len) \ 421 do { \ 422 (bd)->addr.hi = cpu_to_le32(upper_32_bits(maddr)); \ 423 (bd)->addr.lo = cpu_to_le32(lower_32_bits(maddr)); \ 424 (bd)->nbytes = cpu_to_le16(len); \ 425 } while (0) 426 #define BD_UNMAP_LEN(bd) (le16_to_cpu((bd)->nbytes)) 427 428 struct qede_fastpath { 429 struct qede_dev *edev; 430 #define QEDE_FASTPATH_TX BIT(0) 431 #define QEDE_FASTPATH_RX BIT(1) 432 #define QEDE_FASTPATH_XDP BIT(2) 433 #define QEDE_FASTPATH_COMBINED (QEDE_FASTPATH_TX | QEDE_FASTPATH_RX) 434 u8 type; 435 u8 id; 436 u8 xdp_xmit; 437 struct napi_struct napi; 438 struct qed_sb_info *sb_info; 439 struct qede_rx_queue *rxq; 440 struct qede_tx_queue *txq; 441 struct qede_tx_queue *xdp_tx; 442 443 #define VEC_NAME_SIZE (FIELD_SIZEOF(struct net_device, name) + 8) 444 char name[VEC_NAME_SIZE]; 445 }; 446 447 /* Debug print definitions */ 448 #define DP_NAME(edev) ((edev)->ndev->name) 449 450 #define XMIT_PLAIN 0 451 #define XMIT_L4_CSUM BIT(0) 452 #define XMIT_LSO BIT(1) 453 #define XMIT_ENC BIT(2) 454 #define XMIT_ENC_GSO_L4_CSUM BIT(3) 455 456 #define QEDE_CSUM_ERROR BIT(0) 457 #define QEDE_CSUM_UNNECESSARY BIT(1) 458 #define QEDE_TUNN_CSUM_UNNECESSARY BIT(2) 459 460 #define QEDE_SP_RX_MODE 1 461 462 #ifdef CONFIG_RFS_ACCEL 463 int qede_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb, 464 u16 rxq_index, u32 flow_id); 465 #define QEDE_SP_ARFS_CONFIG 4 466 #define QEDE_SP_TASK_POLL_DELAY (5 * HZ) 467 #endif 468 469 void qede_process_arfs_filters(struct qede_dev *edev, bool free_fltr); 470 void qede_poll_for_freeing_arfs_filters(struct qede_dev *edev); 471 void qede_arfs_filter_op(void *dev, void *filter, u8 fw_rc); 472 void qede_free_arfs(struct qede_dev *edev); 473 int qede_alloc_arfs(struct qede_dev *edev); 474 int qede_add_cls_rule(struct qede_dev *edev, struct ethtool_rxnfc *info); 475 int qede_delete_flow_filter(struct qede_dev *edev, u64 cookie); 476 int qede_get_cls_rule_entry(struct qede_dev *edev, struct ethtool_rxnfc *cmd); 477 int qede_get_cls_rule_all(struct qede_dev *edev, struct ethtool_rxnfc *info, 478 u32 *rule_locs); 479 int qede_get_arfs_filter_count(struct qede_dev *edev); 480 481 struct qede_reload_args { 482 void (*func)(struct qede_dev *edev, struct qede_reload_args *args); 483 union { 484 netdev_features_t features; 485 struct bpf_prog *new_prog; 486 u16 mtu; 487 } u; 488 }; 489 490 /* Datapath functions definition */ 491 netdev_tx_t qede_start_xmit(struct sk_buff *skb, struct net_device *ndev); 492 netdev_features_t qede_features_check(struct sk_buff *skb, 493 struct net_device *dev, 494 netdev_features_t features); 495 void qede_tx_log_print(struct qede_dev *edev, struct qede_fastpath *fp); 496 int qede_alloc_rx_buffer(struct qede_rx_queue *rxq, bool allow_lazy); 497 int qede_free_tx_pkt(struct qede_dev *edev, 498 struct qede_tx_queue *txq, int *len); 499 int qede_poll(struct napi_struct *napi, int budget); 500 irqreturn_t qede_msix_fp_int(int irq, void *fp_cookie); 501 502 /* Filtering function definitions */ 503 void qede_force_mac(void *dev, u8 *mac, bool forced); 504 void qede_udp_ports_update(void *dev, u16 vxlan_port, u16 geneve_port); 505 int qede_set_mac_addr(struct net_device *ndev, void *p); 506 507 int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid); 508 int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid); 509 void qede_vlan_mark_nonconfigured(struct qede_dev *edev); 510 int qede_configure_vlan_filters(struct qede_dev *edev); 511 512 netdev_features_t qede_fix_features(struct net_device *dev, 513 netdev_features_t features); 514 int qede_set_features(struct net_device *dev, netdev_features_t features); 515 void qede_set_rx_mode(struct net_device *ndev); 516 void qede_config_rx_mode(struct net_device *ndev); 517 void qede_fill_rss_params(struct qede_dev *edev, 518 struct qed_update_vport_rss_params *rss, u8 *update); 519 520 void qede_udp_tunnel_add(struct net_device *dev, struct udp_tunnel_info *ti); 521 void qede_udp_tunnel_del(struct net_device *dev, struct udp_tunnel_info *ti); 522 523 int qede_xdp(struct net_device *dev, struct netdev_bpf *xdp); 524 525 #ifdef CONFIG_DCB 526 void qede_set_dcbnl_ops(struct net_device *ndev); 527 #endif 528 529 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level); 530 void qede_set_ethtool_ops(struct net_device *netdev); 531 void qede_reload(struct qede_dev *edev, 532 struct qede_reload_args *args, bool is_locked); 533 int qede_change_mtu(struct net_device *dev, int new_mtu); 534 void qede_fill_by_demand_stats(struct qede_dev *edev); 535 void __qede_lock(struct qede_dev *edev); 536 void __qede_unlock(struct qede_dev *edev); 537 bool qede_has_rx_work(struct qede_rx_queue *rxq); 538 int qede_txq_has_work(struct qede_tx_queue *txq); 539 void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, u8 count); 540 void qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq); 541 int qede_add_tc_flower_fltr(struct qede_dev *edev, __be16 proto, 542 struct tc_cls_flower_offload *f); 543 544 #define RX_RING_SIZE_POW 13 545 #define RX_RING_SIZE ((u16)BIT(RX_RING_SIZE_POW)) 546 #define NUM_RX_BDS_MAX (RX_RING_SIZE - 1) 547 #define NUM_RX_BDS_MIN 128 548 #define NUM_RX_BDS_DEF ((u16)BIT(10) - 1) 549 550 #define TX_RING_SIZE_POW 13 551 #define TX_RING_SIZE ((u16)BIT(TX_RING_SIZE_POW)) 552 #define NUM_TX_BDS_MAX (TX_RING_SIZE - 1) 553 #define NUM_TX_BDS_MIN 128 554 #define NUM_TX_BDS_DEF NUM_TX_BDS_MAX 555 556 #define QEDE_MIN_PKT_LEN 64 557 #define QEDE_RX_HDR_SIZE 256 558 #define QEDE_MAX_JUMBO_PACKET_SIZE 9600 559 #define for_each_queue(i) for (i = 0; i < edev->num_queues; i++) 560 #define for_each_cos_in_txq(edev, var) \ 561 for ((var) = 0; (var) < (edev)->dev_info.num_tc; (var)++) 562 563 #endif /* _QEDE_H_ */ 564