1 /* 2 * Copyright (C) 2015 Cavium, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of version 2 of the GNU General Public License 6 * as published by the Free Software Foundation. 7 */ 8 9 #ifndef NIC_H 10 #define NIC_H 11 12 #include <linux/netdevice.h> 13 #include <linux/interrupt.h> 14 #include <linux/pci.h> 15 #include "thunder_bgx.h" 16 17 /* PCI device IDs */ 18 #define PCI_DEVICE_ID_THUNDER_NIC_PF 0xA01E 19 #define PCI_DEVICE_ID_THUNDER_PASS1_NIC_VF 0x0011 20 #define PCI_DEVICE_ID_THUNDER_NIC_VF 0xA034 21 #define PCI_DEVICE_ID_THUNDER_BGX 0xA026 22 23 /* Subsystem device IDs */ 24 #define PCI_SUBSYS_DEVID_88XX_NIC_PF 0xA11E 25 #define PCI_SUBSYS_DEVID_81XX_NIC_PF 0xA21E 26 #define PCI_SUBSYS_DEVID_83XX_NIC_PF 0xA31E 27 28 #define PCI_SUBSYS_DEVID_88XX_PASS1_NIC_VF 0xA11E 29 #define PCI_SUBSYS_DEVID_88XX_NIC_VF 0xA134 30 #define PCI_SUBSYS_DEVID_81XX_NIC_VF 0xA234 31 #define PCI_SUBSYS_DEVID_83XX_NIC_VF 0xA334 32 33 34 /* PCI BAR nos */ 35 #define PCI_CFG_REG_BAR_NUM 0 36 #define PCI_MSIX_REG_BAR_NUM 4 37 38 /* NIC SRIOV VF count */ 39 #define MAX_NUM_VFS_SUPPORTED 128 40 #define DEFAULT_NUM_VF_ENABLED 8 41 42 #define NIC_TNS_BYPASS_MODE 0 43 #define NIC_TNS_MODE 1 44 45 /* NIC priv flags */ 46 #define NIC_SRIOV_ENABLED BIT(0) 47 48 /* Min/Max packet size */ 49 #define NIC_HW_MIN_FRS 64 50 #define NIC_HW_MAX_FRS 9190 /* Excluding L2 header and FCS */ 51 52 /* Max pkinds */ 53 #define NIC_MAX_PKIND 16 54 55 /* Max when CPI_ALG is IP diffserv */ 56 #define NIC_MAX_CPI_PER_LMAC 64 57 58 /* NIC VF Interrupts */ 59 #define NICVF_INTR_CQ 0 60 #define NICVF_INTR_SQ 1 61 #define NICVF_INTR_RBDR 2 62 #define NICVF_INTR_PKT_DROP 3 63 #define NICVF_INTR_TCP_TIMER 4 64 #define NICVF_INTR_MBOX 5 65 #define NICVF_INTR_QS_ERR 6 66 67 #define NICVF_INTR_CQ_SHIFT 0 68 #define NICVF_INTR_SQ_SHIFT 8 69 #define NICVF_INTR_RBDR_SHIFT 16 70 #define NICVF_INTR_PKT_DROP_SHIFT 20 71 #define NICVF_INTR_TCP_TIMER_SHIFT 21 72 #define NICVF_INTR_MBOX_SHIFT 22 73 #define NICVF_INTR_QS_ERR_SHIFT 23 74 75 #define NICVF_INTR_CQ_MASK (0xFF << NICVF_INTR_CQ_SHIFT) 76 #define NICVF_INTR_SQ_MASK (0xFF << NICVF_INTR_SQ_SHIFT) 77 #define NICVF_INTR_RBDR_MASK (0x03 << NICVF_INTR_RBDR_SHIFT) 78 #define NICVF_INTR_PKT_DROP_MASK BIT(NICVF_INTR_PKT_DROP_SHIFT) 79 #define NICVF_INTR_TCP_TIMER_MASK BIT(NICVF_INTR_TCP_TIMER_SHIFT) 80 #define NICVF_INTR_MBOX_MASK BIT(NICVF_INTR_MBOX_SHIFT) 81 #define NICVF_INTR_QS_ERR_MASK BIT(NICVF_INTR_QS_ERR_SHIFT) 82 83 /* MSI-X interrupts */ 84 #define NIC_PF_MSIX_VECTORS 10 85 #define NIC_VF_MSIX_VECTORS 20 86 87 #define NIC_PF_INTR_ID_ECC0_SBE 0 88 #define NIC_PF_INTR_ID_ECC0_DBE 1 89 #define NIC_PF_INTR_ID_ECC1_SBE 2 90 #define NIC_PF_INTR_ID_ECC1_DBE 3 91 #define NIC_PF_INTR_ID_ECC2_SBE 4 92 #define NIC_PF_INTR_ID_ECC2_DBE 5 93 #define NIC_PF_INTR_ID_ECC3_SBE 6 94 #define NIC_PF_INTR_ID_ECC3_DBE 7 95 #define NIC_PF_INTR_ID_MBOX0 8 96 #define NIC_PF_INTR_ID_MBOX1 9 97 98 /* Minimum FIFO level before all packets for the CQ are dropped 99 * 100 * This value ensures that once a packet has been "accepted" 101 * for reception it will not get dropped due to non-availability 102 * of CQ descriptor. An errata in HW mandates this value to be 103 * atleast 0x100. 104 */ 105 #define NICPF_CQM_MIN_DROP_LEVEL 0x100 106 107 /* Global timer for CQ timer thresh interrupts 108 * Calculated for SCLK of 700Mhz 109 * value written should be a 1/16th of what is expected 110 * 111 * 1 tick per 0.025usec 112 */ 113 #define NICPF_CLK_PER_INT_TICK 1 114 115 /* Time to wait before we decide that a SQ is stuck. 116 * 117 * Since both pkt rx and tx notifications are done with same CQ, 118 * when packets are being received at very high rate (eg: L2 forwarding) 119 * then freeing transmitted skbs will be delayed and watchdog 120 * will kick in, resetting interface. Hence keeping this value high. 121 */ 122 #define NICVF_TX_TIMEOUT (50 * HZ) 123 124 struct nicvf_cq_poll { 125 struct nicvf *nicvf; 126 u8 cq_idx; /* Completion queue index */ 127 struct napi_struct napi; 128 }; 129 130 #define NIC_MAX_RSS_HASH_BITS 8 131 #define NIC_MAX_RSS_IDR_TBL_SIZE (1 << NIC_MAX_RSS_HASH_BITS) 132 #define RSS_HASH_KEY_SIZE 5 /* 320 bit key */ 133 134 struct nicvf_rss_info { 135 bool enable; 136 #define RSS_L2_EXTENDED_HASH_ENA BIT(0) 137 #define RSS_IP_HASH_ENA BIT(1) 138 #define RSS_TCP_HASH_ENA BIT(2) 139 #define RSS_TCP_SYN_DIS BIT(3) 140 #define RSS_UDP_HASH_ENA BIT(4) 141 #define RSS_L4_EXTENDED_HASH_ENA BIT(5) 142 #define RSS_ROCE_ENA BIT(6) 143 #define RSS_L3_BI_DIRECTION_ENA BIT(7) 144 #define RSS_L4_BI_DIRECTION_ENA BIT(8) 145 u64 cfg; 146 u8 hash_bits; 147 u16 rss_size; 148 u8 ind_tbl[NIC_MAX_RSS_IDR_TBL_SIZE]; 149 u64 key[RSS_HASH_KEY_SIZE]; 150 } ____cacheline_aligned_in_smp; 151 152 struct nicvf_pfc { 153 u8 autoneg; 154 u8 fc_rx; 155 u8 fc_tx; 156 }; 157 158 enum rx_stats_reg_offset { 159 RX_OCTS = 0x0, 160 RX_UCAST = 0x1, 161 RX_BCAST = 0x2, 162 RX_MCAST = 0x3, 163 RX_RED = 0x4, 164 RX_RED_OCTS = 0x5, 165 RX_ORUN = 0x6, 166 RX_ORUN_OCTS = 0x7, 167 RX_FCS = 0x8, 168 RX_L2ERR = 0x9, 169 RX_DRP_BCAST = 0xa, 170 RX_DRP_MCAST = 0xb, 171 RX_DRP_L3BCAST = 0xc, 172 RX_DRP_L3MCAST = 0xd, 173 RX_STATS_ENUM_LAST, 174 }; 175 176 enum tx_stats_reg_offset { 177 TX_OCTS = 0x0, 178 TX_UCAST = 0x1, 179 TX_BCAST = 0x2, 180 TX_MCAST = 0x3, 181 TX_DROP = 0x4, 182 TX_STATS_ENUM_LAST, 183 }; 184 185 struct nicvf_hw_stats { 186 u64 rx_bytes; 187 u64 rx_frames; 188 u64 rx_ucast_frames; 189 u64 rx_bcast_frames; 190 u64 rx_mcast_frames; 191 u64 rx_drops; 192 u64 rx_drop_red; 193 u64 rx_drop_red_bytes; 194 u64 rx_drop_overrun; 195 u64 rx_drop_overrun_bytes; 196 u64 rx_drop_bcast; 197 u64 rx_drop_mcast; 198 u64 rx_drop_l3_bcast; 199 u64 rx_drop_l3_mcast; 200 u64 rx_fcs_errors; 201 u64 rx_l2_errors; 202 203 u64 tx_bytes; 204 u64 tx_frames; 205 u64 tx_ucast_frames; 206 u64 tx_bcast_frames; 207 u64 tx_mcast_frames; 208 u64 tx_drops; 209 }; 210 211 struct nicvf_drv_stats { 212 /* CQE Rx errs */ 213 u64 rx_bgx_truncated_pkts; 214 u64 rx_jabber_errs; 215 u64 rx_fcs_errs; 216 u64 rx_bgx_errs; 217 u64 rx_prel2_errs; 218 u64 rx_l2_hdr_malformed; 219 u64 rx_oversize; 220 u64 rx_undersize; 221 u64 rx_l2_len_mismatch; 222 u64 rx_l2_pclp; 223 u64 rx_ip_ver_errs; 224 u64 rx_ip_csum_errs; 225 u64 rx_ip_hdr_malformed; 226 u64 rx_ip_payload_malformed; 227 u64 rx_ip_ttl_errs; 228 u64 rx_l3_pclp; 229 u64 rx_l4_malformed; 230 u64 rx_l4_csum_errs; 231 u64 rx_udp_len_errs; 232 u64 rx_l4_port_errs; 233 u64 rx_tcp_flag_errs; 234 u64 rx_tcp_offset_errs; 235 u64 rx_l4_pclp; 236 u64 rx_truncated_pkts; 237 238 /* CQE Tx errs */ 239 u64 tx_desc_fault; 240 u64 tx_hdr_cons_err; 241 u64 tx_subdesc_err; 242 u64 tx_max_size_exceeded; 243 u64 tx_imm_size_oflow; 244 u64 tx_data_seq_err; 245 u64 tx_mem_seq_err; 246 u64 tx_lock_viol; 247 u64 tx_data_fault; 248 u64 tx_tstmp_conflict; 249 u64 tx_tstmp_timeout; 250 u64 tx_mem_fault; 251 u64 tx_csum_overlap; 252 u64 tx_csum_overflow; 253 254 /* driver debug stats */ 255 u64 rcv_buffer_alloc_failures; 256 u64 tx_tso; 257 u64 tx_timeout; 258 u64 txq_stop; 259 u64 txq_wake; 260 261 struct u64_stats_sync syncp; 262 }; 263 264 struct nicvf { 265 struct nicvf *pnicvf; 266 struct net_device *netdev; 267 struct pci_dev *pdev; 268 void __iomem *reg_base; 269 #define MAX_QUEUES_PER_QSET 8 270 struct queue_set *qs; 271 struct nicvf_cq_poll *napi[8]; 272 u8 vf_id; 273 u8 sqs_id; 274 bool sqs_mode; 275 bool hw_tso; 276 bool t88; 277 278 /* Receive buffer alloc */ 279 u32 rb_page_offset; 280 u16 rb_pageref; 281 bool rb_alloc_fail; 282 bool rb_work_scheduled; 283 struct page *rb_page; 284 struct delayed_work rbdr_work; 285 struct tasklet_struct rbdr_task; 286 287 /* Secondary Qset */ 288 u8 sqs_count; 289 #define MAX_SQS_PER_VF_SINGLE_NODE 5 290 #define MAX_SQS_PER_VF 11 291 struct nicvf *snicvf[MAX_SQS_PER_VF]; 292 293 /* Queue count */ 294 u8 rx_queues; 295 u8 tx_queues; 296 u8 max_queues; 297 298 u8 node; 299 u8 cpi_alg; 300 bool link_up; 301 u8 mac_type; 302 u8 duplex; 303 u32 speed; 304 bool tns_mode; 305 bool loopback_supported; 306 struct nicvf_rss_info rss_info; 307 struct nicvf_pfc pfc; 308 struct tasklet_struct qs_err_task; 309 struct work_struct reset_task; 310 311 /* Interrupt coalescing settings */ 312 u32 cq_coalesce_usecs; 313 u32 msg_enable; 314 315 /* Stats */ 316 struct nicvf_hw_stats hw_stats; 317 struct nicvf_drv_stats __percpu *drv_stats; 318 struct bgx_stats bgx_stats; 319 320 /* MSI-X */ 321 bool msix_enabled; 322 u8 num_vec; 323 struct msix_entry msix_entries[NIC_VF_MSIX_VECTORS]; 324 char irq_name[NIC_VF_MSIX_VECTORS][IFNAMSIZ + 15]; 325 bool irq_allocated[NIC_VF_MSIX_VECTORS]; 326 cpumask_var_t affinity_mask[NIC_VF_MSIX_VECTORS]; 327 328 /* VF <-> PF mailbox communication */ 329 bool pf_acked; 330 bool pf_nacked; 331 bool set_mac_pending; 332 } ____cacheline_aligned_in_smp; 333 334 /* PF <--> VF Mailbox communication 335 * Eight 64bit registers are shared between PF and VF. 336 * Separate set for each VF. 337 * Writing '1' into last register mbx7 means end of message. 338 */ 339 340 /* PF <--> VF mailbox communication */ 341 #define NIC_PF_VF_MAILBOX_SIZE 2 342 #define NIC_MBOX_MSG_TIMEOUT 2000 /* ms */ 343 344 /* Mailbox message types */ 345 #define NIC_MBOX_MSG_READY 0x01 /* Is PF ready to rcv msgs */ 346 #define NIC_MBOX_MSG_ACK 0x02 /* ACK the message received */ 347 #define NIC_MBOX_MSG_NACK 0x03 /* NACK the message received */ 348 #define NIC_MBOX_MSG_QS_CFG 0x04 /* Configure Qset */ 349 #define NIC_MBOX_MSG_RQ_CFG 0x05 /* Configure receive queue */ 350 #define NIC_MBOX_MSG_SQ_CFG 0x06 /* Configure Send queue */ 351 #define NIC_MBOX_MSG_RQ_DROP_CFG 0x07 /* Configure receive queue */ 352 #define NIC_MBOX_MSG_SET_MAC 0x08 /* Add MAC ID to DMAC filter */ 353 #define NIC_MBOX_MSG_SET_MAX_FRS 0x09 /* Set max frame size */ 354 #define NIC_MBOX_MSG_CPI_CFG 0x0A /* Config CPI, RSSI */ 355 #define NIC_MBOX_MSG_RSS_SIZE 0x0B /* Get RSS indir_tbl size */ 356 #define NIC_MBOX_MSG_RSS_CFG 0x0C /* Config RSS table */ 357 #define NIC_MBOX_MSG_RSS_CFG_CONT 0x0D /* RSS config continuation */ 358 #define NIC_MBOX_MSG_RQ_BP_CFG 0x0E /* RQ backpressure config */ 359 #define NIC_MBOX_MSG_RQ_SW_SYNC 0x0F /* Flush inflight pkts to RQ */ 360 #define NIC_MBOX_MSG_BGX_STATS 0x10 /* Get stats from BGX */ 361 #define NIC_MBOX_MSG_BGX_LINK_CHANGE 0x11 /* BGX:LMAC link status */ 362 #define NIC_MBOX_MSG_ALLOC_SQS 0x12 /* Allocate secondary Qset */ 363 #define NIC_MBOX_MSG_NICVF_PTR 0x13 /* Send nicvf ptr to PF */ 364 #define NIC_MBOX_MSG_PNICVF_PTR 0x14 /* Get primary qset nicvf ptr */ 365 #define NIC_MBOX_MSG_SNICVF_PTR 0x15 /* Send sqet nicvf ptr to PVF */ 366 #define NIC_MBOX_MSG_LOOPBACK 0x16 /* Set interface in loopback */ 367 #define NIC_MBOX_MSG_RESET_STAT_COUNTER 0x17 /* Reset statistics counters */ 368 #define NIC_MBOX_MSG_PFC 0x18 /* Pause frame control */ 369 #define NIC_MBOX_MSG_CFG_DONE 0xF0 /* VF configuration done */ 370 #define NIC_MBOX_MSG_SHUTDOWN 0xF1 /* VF is being shutdown */ 371 372 struct nic_cfg_msg { 373 u8 msg; 374 u8 vf_id; 375 u8 node_id; 376 u8 tns_mode:1; 377 u8 sqs_mode:1; 378 u8 loopback_supported:1; 379 u8 mac_addr[ETH_ALEN]; 380 }; 381 382 /* Qset configuration */ 383 struct qs_cfg_msg { 384 u8 msg; 385 u8 num; 386 u8 sqs_count; 387 u64 cfg; 388 }; 389 390 /* Receive queue configuration */ 391 struct rq_cfg_msg { 392 u8 msg; 393 u8 qs_num; 394 u8 rq_num; 395 u64 cfg; 396 }; 397 398 /* Send queue configuration */ 399 struct sq_cfg_msg { 400 u8 msg; 401 u8 qs_num; 402 u8 sq_num; 403 bool sqs_mode; 404 u64 cfg; 405 }; 406 407 /* Set VF's MAC address */ 408 struct set_mac_msg { 409 u8 msg; 410 u8 vf_id; 411 u8 mac_addr[ETH_ALEN]; 412 }; 413 414 /* Set Maximum frame size */ 415 struct set_frs_msg { 416 u8 msg; 417 u8 vf_id; 418 u16 max_frs; 419 }; 420 421 /* Set CPI algorithm type */ 422 struct cpi_cfg_msg { 423 u8 msg; 424 u8 vf_id; 425 u8 rq_cnt; 426 u8 cpi_alg; 427 }; 428 429 /* Get RSS table size */ 430 struct rss_sz_msg { 431 u8 msg; 432 u8 vf_id; 433 u16 ind_tbl_size; 434 }; 435 436 /* Set RSS configuration */ 437 struct rss_cfg_msg { 438 u8 msg; 439 u8 vf_id; 440 u8 hash_bits; 441 u8 tbl_len; 442 u8 tbl_offset; 443 #define RSS_IND_TBL_LEN_PER_MBX_MSG 8 444 u8 ind_tbl[RSS_IND_TBL_LEN_PER_MBX_MSG]; 445 }; 446 447 struct bgx_stats_msg { 448 u8 msg; 449 u8 vf_id; 450 u8 rx; 451 u8 idx; 452 u64 stats; 453 }; 454 455 /* Physical interface link status */ 456 struct bgx_link_status { 457 u8 msg; 458 u8 mac_type; 459 u8 link_up; 460 u8 duplex; 461 u32 speed; 462 }; 463 464 /* Get Extra Qset IDs */ 465 struct sqs_alloc { 466 u8 msg; 467 u8 vf_id; 468 u8 qs_count; 469 }; 470 471 struct nicvf_ptr { 472 u8 msg; 473 u8 vf_id; 474 bool sqs_mode; 475 u8 sqs_id; 476 u64 nicvf; 477 }; 478 479 /* Set interface in loopback mode */ 480 struct set_loopback { 481 u8 msg; 482 u8 vf_id; 483 bool enable; 484 }; 485 486 /* Reset statistics counters */ 487 struct reset_stat_cfg { 488 u8 msg; 489 /* Bitmap to select NIC_PF_VNIC(vf_id)_RX_STAT(0..13) */ 490 u16 rx_stat_mask; 491 /* Bitmap to select NIC_PF_VNIC(vf_id)_TX_STAT(0..4) */ 492 u8 tx_stat_mask; 493 /* Bitmap to select NIC_PF_QS(0..127)_RQ(0..7)_STAT(0..1) 494 * bit14, bit15 NIC_PF_QS(vf_id)_RQ7_STAT(0..1) 495 * bit12, bit13 NIC_PF_QS(vf_id)_RQ6_STAT(0..1) 496 * .. 497 * bit2, bit3 NIC_PF_QS(vf_id)_RQ1_STAT(0..1) 498 * bit0, bit1 NIC_PF_QS(vf_id)_RQ0_STAT(0..1) 499 */ 500 u16 rq_stat_mask; 501 /* Bitmap to select NIC_PF_QS(0..127)_SQ(0..7)_STAT(0..1) 502 * bit14, bit15 NIC_PF_QS(vf_id)_SQ7_STAT(0..1) 503 * bit12, bit13 NIC_PF_QS(vf_id)_SQ6_STAT(0..1) 504 * .. 505 * bit2, bit3 NIC_PF_QS(vf_id)_SQ1_STAT(0..1) 506 * bit0, bit1 NIC_PF_QS(vf_id)_SQ0_STAT(0..1) 507 */ 508 u16 sq_stat_mask; 509 }; 510 511 struct pfc { 512 u8 msg; 513 u8 get; /* Get or set PFC settings */ 514 u8 autoneg; 515 u8 fc_rx; 516 u8 fc_tx; 517 }; 518 519 /* 128 bit shared memory between PF and each VF */ 520 union nic_mbx { 521 struct { u8 msg; } msg; 522 struct nic_cfg_msg nic_cfg; 523 struct qs_cfg_msg qs; 524 struct rq_cfg_msg rq; 525 struct sq_cfg_msg sq; 526 struct set_mac_msg mac; 527 struct set_frs_msg frs; 528 struct cpi_cfg_msg cpi_cfg; 529 struct rss_sz_msg rss_size; 530 struct rss_cfg_msg rss_cfg; 531 struct bgx_stats_msg bgx_stats; 532 struct bgx_link_status link_status; 533 struct sqs_alloc sqs_alloc; 534 struct nicvf_ptr nicvf; 535 struct set_loopback lbk; 536 struct reset_stat_cfg reset_stat; 537 struct pfc pfc; 538 }; 539 540 #define NIC_NODE_ID_MASK 0x03 541 #define NIC_NODE_ID_SHIFT 44 542 543 static inline int nic_get_node_id(struct pci_dev *pdev) 544 { 545 u64 addr = pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM); 546 return ((addr >> NIC_NODE_ID_SHIFT) & NIC_NODE_ID_MASK); 547 } 548 549 static inline bool pass1_silicon(struct pci_dev *pdev) 550 { 551 return (pdev->revision < 8) && 552 (pdev->subsystem_device == PCI_SUBSYS_DEVID_88XX_NIC_PF); 553 } 554 555 static inline bool pass2_silicon(struct pci_dev *pdev) 556 { 557 return (pdev->revision >= 8) && 558 (pdev->subsystem_device == PCI_SUBSYS_DEVID_88XX_NIC_PF); 559 } 560 561 int nicvf_set_real_num_queues(struct net_device *netdev, 562 int tx_queues, int rx_queues); 563 int nicvf_open(struct net_device *netdev); 564 int nicvf_stop(struct net_device *netdev); 565 int nicvf_send_msg_to_pf(struct nicvf *vf, union nic_mbx *mbx); 566 void nicvf_config_rss(struct nicvf *nic); 567 void nicvf_set_rss_key(struct nicvf *nic); 568 void nicvf_set_ethtool_ops(struct net_device *netdev); 569 void nicvf_update_stats(struct nicvf *nic); 570 void nicvf_update_lmac_stats(struct nicvf *nic); 571 572 #endif /* NIC_H */ 573