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 /* PCI BAR nos */ 24 #define PCI_CFG_REG_BAR_NUM 0 25 #define PCI_MSIX_REG_BAR_NUM 4 26 27 /* NIC SRIOV VF count */ 28 #define MAX_NUM_VFS_SUPPORTED 128 29 #define DEFAULT_NUM_VF_ENABLED 8 30 31 #define NIC_TNS_BYPASS_MODE 0 32 #define NIC_TNS_MODE 1 33 34 /* NIC priv flags */ 35 #define NIC_SRIOV_ENABLED BIT(0) 36 37 /* Min/Max packet size */ 38 #define NIC_HW_MIN_FRS 64 39 #define NIC_HW_MAX_FRS 9200 /* 9216 max packet including FCS */ 40 41 /* Max pkinds */ 42 #define NIC_MAX_PKIND 16 43 44 /* Rx Channels */ 45 /* Receive channel configuration in TNS bypass mode 46 * Below is configuration in TNS bypass mode 47 * BGX0-LMAC0-CHAN0 - VNIC CHAN0 48 * BGX0-LMAC1-CHAN0 - VNIC CHAN16 49 * ... 50 * BGX1-LMAC0-CHAN0 - VNIC CHAN128 51 * ... 52 * BGX1-LMAC3-CHAN0 - VNIC CHAN174 53 */ 54 #define NIC_INTF_COUNT 2 /* Interfaces btw VNIC and TNS/BGX */ 55 #define NIC_CHANS_PER_INF 128 56 #define NIC_MAX_CHANS (NIC_INTF_COUNT * NIC_CHANS_PER_INF) 57 #define NIC_CPI_COUNT 2048 /* No of channel parse indices */ 58 59 /* TNS bypass mode: 1-1 mapping between VNIC and BGX:LMAC */ 60 #define NIC_MAX_BGX MAX_BGX_PER_CN88XX 61 #define NIC_CPI_PER_BGX (NIC_CPI_COUNT / NIC_MAX_BGX) 62 #define NIC_MAX_CPI_PER_LMAC 64 /* Max when CPI_ALG is IP diffserv */ 63 #define NIC_RSSI_PER_BGX (NIC_RSSI_COUNT / NIC_MAX_BGX) 64 65 /* Tx scheduling */ 66 #define NIC_MAX_TL4 1024 67 #define NIC_MAX_TL4_SHAPERS 256 /* 1 shaper for 4 TL4s */ 68 #define NIC_MAX_TL3 256 69 #define NIC_MAX_TL3_SHAPERS 64 /* 1 shaper for 4 TL3s */ 70 #define NIC_MAX_TL2 64 71 #define NIC_MAX_TL2_SHAPERS 2 /* 1 shaper for 32 TL2s */ 72 #define NIC_MAX_TL1 2 73 74 /* TNS bypass mode */ 75 #define NIC_TL2_PER_BGX 32 76 #define NIC_TL4_PER_BGX (NIC_MAX_TL4 / NIC_MAX_BGX) 77 #define NIC_TL4_PER_LMAC (NIC_MAX_TL4 / NIC_CHANS_PER_INF) 78 79 /* NIC VF Interrupts */ 80 #define NICVF_INTR_CQ 0 81 #define NICVF_INTR_SQ 1 82 #define NICVF_INTR_RBDR 2 83 #define NICVF_INTR_PKT_DROP 3 84 #define NICVF_INTR_TCP_TIMER 4 85 #define NICVF_INTR_MBOX 5 86 #define NICVF_INTR_QS_ERR 6 87 88 #define NICVF_INTR_CQ_SHIFT 0 89 #define NICVF_INTR_SQ_SHIFT 8 90 #define NICVF_INTR_RBDR_SHIFT 16 91 #define NICVF_INTR_PKT_DROP_SHIFT 20 92 #define NICVF_INTR_TCP_TIMER_SHIFT 21 93 #define NICVF_INTR_MBOX_SHIFT 22 94 #define NICVF_INTR_QS_ERR_SHIFT 23 95 96 #define NICVF_INTR_CQ_MASK (0xFF << NICVF_INTR_CQ_SHIFT) 97 #define NICVF_INTR_SQ_MASK (0xFF << NICVF_INTR_SQ_SHIFT) 98 #define NICVF_INTR_RBDR_MASK (0x03 << NICVF_INTR_RBDR_SHIFT) 99 #define NICVF_INTR_PKT_DROP_MASK BIT(NICVF_INTR_PKT_DROP_SHIFT) 100 #define NICVF_INTR_TCP_TIMER_MASK BIT(NICVF_INTR_TCP_TIMER_SHIFT) 101 #define NICVF_INTR_MBOX_MASK BIT(NICVF_INTR_MBOX_SHIFT) 102 #define NICVF_INTR_QS_ERR_MASK BIT(NICVF_INTR_QS_ERR_SHIFT) 103 104 /* MSI-X interrupts */ 105 #define NIC_PF_MSIX_VECTORS 10 106 #define NIC_VF_MSIX_VECTORS 20 107 108 #define NIC_PF_INTR_ID_ECC0_SBE 0 109 #define NIC_PF_INTR_ID_ECC0_DBE 1 110 #define NIC_PF_INTR_ID_ECC1_SBE 2 111 #define NIC_PF_INTR_ID_ECC1_DBE 3 112 #define NIC_PF_INTR_ID_ECC2_SBE 4 113 #define NIC_PF_INTR_ID_ECC2_DBE 5 114 #define NIC_PF_INTR_ID_ECC3_SBE 6 115 #define NIC_PF_INTR_ID_ECC3_DBE 7 116 #define NIC_PF_INTR_ID_MBOX0 8 117 #define NIC_PF_INTR_ID_MBOX1 9 118 119 /* Minimum FIFO level before all packets for the CQ are dropped 120 * 121 * This value ensures that once a packet has been "accepted" 122 * for reception it will not get dropped due to non-availability 123 * of CQ descriptor. An errata in HW mandates this value to be 124 * atleast 0x100. 125 */ 126 #define NICPF_CQM_MIN_DROP_LEVEL 0x100 127 128 /* Global timer for CQ timer thresh interrupts 129 * Calculated for SCLK of 700Mhz 130 * value written should be a 1/16th of what is expected 131 * 132 * 1 tick per 0.025usec 133 */ 134 #define NICPF_CLK_PER_INT_TICK 1 135 136 /* Time to wait before we decide that a SQ is stuck. 137 * 138 * Since both pkt rx and tx notifications are done with same CQ, 139 * when packets are being received at very high rate (eg: L2 forwarding) 140 * then freeing transmitted skbs will be delayed and watchdog 141 * will kick in, resetting interface. Hence keeping this value high. 142 */ 143 #define NICVF_TX_TIMEOUT (50 * HZ) 144 145 struct nicvf_cq_poll { 146 struct nicvf *nicvf; 147 u8 cq_idx; /* Completion queue index */ 148 struct napi_struct napi; 149 }; 150 151 #define NIC_RSSI_COUNT 4096 /* Total no of RSS indices */ 152 #define NIC_MAX_RSS_HASH_BITS 8 153 #define NIC_MAX_RSS_IDR_TBL_SIZE (1 << NIC_MAX_RSS_HASH_BITS) 154 #define RSS_HASH_KEY_SIZE 5 /* 320 bit key */ 155 156 struct nicvf_rss_info { 157 bool enable; 158 #define RSS_L2_EXTENDED_HASH_ENA BIT(0) 159 #define RSS_IP_HASH_ENA BIT(1) 160 #define RSS_TCP_HASH_ENA BIT(2) 161 #define RSS_TCP_SYN_DIS BIT(3) 162 #define RSS_UDP_HASH_ENA BIT(4) 163 #define RSS_L4_EXTENDED_HASH_ENA BIT(5) 164 #define RSS_ROCE_ENA BIT(6) 165 #define RSS_L3_BI_DIRECTION_ENA BIT(7) 166 #define RSS_L4_BI_DIRECTION_ENA BIT(8) 167 u64 cfg; 168 u8 hash_bits; 169 u16 rss_size; 170 u8 ind_tbl[NIC_MAX_RSS_IDR_TBL_SIZE]; 171 u64 key[RSS_HASH_KEY_SIZE]; 172 } ____cacheline_aligned_in_smp; 173 174 enum rx_stats_reg_offset { 175 RX_OCTS = 0x0, 176 RX_UCAST = 0x1, 177 RX_BCAST = 0x2, 178 RX_MCAST = 0x3, 179 RX_RED = 0x4, 180 RX_RED_OCTS = 0x5, 181 RX_ORUN = 0x6, 182 RX_ORUN_OCTS = 0x7, 183 RX_FCS = 0x8, 184 RX_L2ERR = 0x9, 185 RX_DRP_BCAST = 0xa, 186 RX_DRP_MCAST = 0xb, 187 RX_DRP_L3BCAST = 0xc, 188 RX_DRP_L3MCAST = 0xd, 189 RX_STATS_ENUM_LAST, 190 }; 191 192 enum tx_stats_reg_offset { 193 TX_OCTS = 0x0, 194 TX_UCAST = 0x1, 195 TX_BCAST = 0x2, 196 TX_MCAST = 0x3, 197 TX_DROP = 0x4, 198 TX_STATS_ENUM_LAST, 199 }; 200 201 struct nicvf_hw_stats { 202 u64 rx_bytes; 203 u64 rx_ucast_frames; 204 u64 rx_bcast_frames; 205 u64 rx_mcast_frames; 206 u64 rx_fcs_errors; 207 u64 rx_l2_errors; 208 u64 rx_drop_red; 209 u64 rx_drop_red_bytes; 210 u64 rx_drop_overrun; 211 u64 rx_drop_overrun_bytes; 212 u64 rx_drop_bcast; 213 u64 rx_drop_mcast; 214 u64 rx_drop_l3_bcast; 215 u64 rx_drop_l3_mcast; 216 u64 rx_bgx_truncated_pkts; 217 u64 rx_jabber_errs; 218 u64 rx_fcs_errs; 219 u64 rx_bgx_errs; 220 u64 rx_prel2_errs; 221 u64 rx_l2_hdr_malformed; 222 u64 rx_oversize; 223 u64 rx_undersize; 224 u64 rx_l2_len_mismatch; 225 u64 rx_l2_pclp; 226 u64 rx_ip_ver_errs; 227 u64 rx_ip_csum_errs; 228 u64 rx_ip_hdr_malformed; 229 u64 rx_ip_payload_malformed; 230 u64 rx_ip_ttl_errs; 231 u64 rx_l3_pclp; 232 u64 rx_l4_malformed; 233 u64 rx_l4_csum_errs; 234 u64 rx_udp_len_errs; 235 u64 rx_l4_port_errs; 236 u64 rx_tcp_flag_errs; 237 u64 rx_tcp_offset_errs; 238 u64 rx_l4_pclp; 239 u64 rx_truncated_pkts; 240 241 u64 tx_bytes_ok; 242 u64 tx_ucast_frames_ok; 243 u64 tx_bcast_frames_ok; 244 u64 tx_mcast_frames_ok; 245 u64 tx_drops; 246 }; 247 248 struct nicvf_drv_stats { 249 /* Rx */ 250 u64 rx_frames_ok; 251 u64 rx_frames_64; 252 u64 rx_frames_127; 253 u64 rx_frames_255; 254 u64 rx_frames_511; 255 u64 rx_frames_1023; 256 u64 rx_frames_1518; 257 u64 rx_frames_jumbo; 258 u64 rx_drops; 259 260 /* Tx */ 261 u64 tx_frames_ok; 262 u64 tx_drops; 263 u64 tx_tso; 264 u64 txq_stop; 265 u64 txq_wake; 266 }; 267 268 struct nicvf { 269 struct nicvf *pnicvf; 270 struct net_device *netdev; 271 struct pci_dev *pdev; 272 u8 vf_id; 273 u8 node; 274 u8 tns_mode:1; 275 u8 sqs_mode:1; 276 u8 loopback_supported:1; 277 bool hw_tso; 278 u16 mtu; 279 struct queue_set *qs; 280 #define MAX_SQS_PER_VF_SINGLE_NODE 5 281 #define MAX_SQS_PER_VF 11 282 u8 sqs_id; 283 u8 sqs_count; /* Secondary Qset count */ 284 struct nicvf *snicvf[MAX_SQS_PER_VF]; 285 u8 rx_queues; 286 u8 tx_queues; 287 u8 max_queues; 288 void __iomem *reg_base; 289 bool link_up; 290 u8 duplex; 291 u32 speed; 292 struct page *rb_page; 293 u32 rb_page_offset; 294 bool rb_alloc_fail; 295 bool rb_work_scheduled; 296 struct delayed_work rbdr_work; 297 struct tasklet_struct rbdr_task; 298 struct tasklet_struct qs_err_task; 299 struct tasklet_struct cq_task; 300 struct nicvf_cq_poll *napi[8]; 301 struct nicvf_rss_info rss_info; 302 u8 cpi_alg; 303 /* Interrupt coalescing settings */ 304 u32 cq_coalesce_usecs; 305 306 u32 msg_enable; 307 struct nicvf_hw_stats hw_stats; 308 struct nicvf_drv_stats drv_stats; 309 struct bgx_stats bgx_stats; 310 struct work_struct reset_task; 311 312 /* MSI-X */ 313 bool msix_enabled; 314 u8 num_vec; 315 struct msix_entry msix_entries[NIC_VF_MSIX_VECTORS]; 316 char irq_name[NIC_VF_MSIX_VECTORS][20]; 317 bool irq_allocated[NIC_VF_MSIX_VECTORS]; 318 319 /* VF <-> PF mailbox communication */ 320 bool pf_acked; 321 bool pf_nacked; 322 bool set_mac_pending; 323 } ____cacheline_aligned_in_smp; 324 325 /* PF <--> VF Mailbox communication 326 * Eight 64bit registers are shared between PF and VF. 327 * Separate set for each VF. 328 * Writing '1' into last register mbx7 means end of message. 329 */ 330 331 /* PF <--> VF mailbox communication */ 332 #define NIC_PF_VF_MAILBOX_SIZE 2 333 #define NIC_MBOX_MSG_TIMEOUT 2000 /* ms */ 334 335 /* Mailbox message types */ 336 #define NIC_MBOX_MSG_READY 0x01 /* Is PF ready to rcv msgs */ 337 #define NIC_MBOX_MSG_ACK 0x02 /* ACK the message received */ 338 #define NIC_MBOX_MSG_NACK 0x03 /* NACK the message received */ 339 #define NIC_MBOX_MSG_QS_CFG 0x04 /* Configure Qset */ 340 #define NIC_MBOX_MSG_RQ_CFG 0x05 /* Configure receive queue */ 341 #define NIC_MBOX_MSG_SQ_CFG 0x06 /* Configure Send queue */ 342 #define NIC_MBOX_MSG_RQ_DROP_CFG 0x07 /* Configure receive queue */ 343 #define NIC_MBOX_MSG_SET_MAC 0x08 /* Add MAC ID to DMAC filter */ 344 #define NIC_MBOX_MSG_SET_MAX_FRS 0x09 /* Set max frame size */ 345 #define NIC_MBOX_MSG_CPI_CFG 0x0A /* Config CPI, RSSI */ 346 #define NIC_MBOX_MSG_RSS_SIZE 0x0B /* Get RSS indir_tbl size */ 347 #define NIC_MBOX_MSG_RSS_CFG 0x0C /* Config RSS table */ 348 #define NIC_MBOX_MSG_RSS_CFG_CONT 0x0D /* RSS config continuation */ 349 #define NIC_MBOX_MSG_RQ_BP_CFG 0x0E /* RQ backpressure config */ 350 #define NIC_MBOX_MSG_RQ_SW_SYNC 0x0F /* Flush inflight pkts to RQ */ 351 #define NIC_MBOX_MSG_BGX_STATS 0x10 /* Get stats from BGX */ 352 #define NIC_MBOX_MSG_BGX_LINK_CHANGE 0x11 /* BGX:LMAC link status */ 353 #define NIC_MBOX_MSG_ALLOC_SQS 0x12 /* Allocate secondary Qset */ 354 #define NIC_MBOX_MSG_NICVF_PTR 0x13 /* Send nicvf ptr to PF */ 355 #define NIC_MBOX_MSG_PNICVF_PTR 0x14 /* Get primary qset nicvf ptr */ 356 #define NIC_MBOX_MSG_SNICVF_PTR 0x15 /* Send sqet nicvf ptr to PVF */ 357 #define NIC_MBOX_MSG_LOOPBACK 0x16 /* Set interface in loopback */ 358 #define NIC_MBOX_MSG_CFG_DONE 0xF0 /* VF configuration done */ 359 #define NIC_MBOX_MSG_SHUTDOWN 0xF1 /* VF is being shutdown */ 360 361 struct nic_cfg_msg { 362 u8 msg; 363 u8 vf_id; 364 u8 node_id; 365 u8 tns_mode:1; 366 u8 sqs_mode:1; 367 u8 loopback_supported:1; 368 u8 mac_addr[ETH_ALEN]; 369 }; 370 371 /* Qset configuration */ 372 struct qs_cfg_msg { 373 u8 msg; 374 u8 num; 375 u8 sqs_count; 376 u64 cfg; 377 }; 378 379 /* Receive queue configuration */ 380 struct rq_cfg_msg { 381 u8 msg; 382 u8 qs_num; 383 u8 rq_num; 384 u64 cfg; 385 }; 386 387 /* Send queue configuration */ 388 struct sq_cfg_msg { 389 u8 msg; 390 u8 qs_num; 391 u8 sq_num; 392 bool sqs_mode; 393 u64 cfg; 394 }; 395 396 /* Set VF's MAC address */ 397 struct set_mac_msg { 398 u8 msg; 399 u8 vf_id; 400 u8 mac_addr[ETH_ALEN]; 401 }; 402 403 /* Set Maximum frame size */ 404 struct set_frs_msg { 405 u8 msg; 406 u8 vf_id; 407 u16 max_frs; 408 }; 409 410 /* Set CPI algorithm type */ 411 struct cpi_cfg_msg { 412 u8 msg; 413 u8 vf_id; 414 u8 rq_cnt; 415 u8 cpi_alg; 416 }; 417 418 /* Get RSS table size */ 419 struct rss_sz_msg { 420 u8 msg; 421 u8 vf_id; 422 u16 ind_tbl_size; 423 }; 424 425 /* Set RSS configuration */ 426 struct rss_cfg_msg { 427 u8 msg; 428 u8 vf_id; 429 u8 hash_bits; 430 u8 tbl_len; 431 u8 tbl_offset; 432 #define RSS_IND_TBL_LEN_PER_MBX_MSG 8 433 u8 ind_tbl[RSS_IND_TBL_LEN_PER_MBX_MSG]; 434 }; 435 436 struct bgx_stats_msg { 437 u8 msg; 438 u8 vf_id; 439 u8 rx; 440 u8 idx; 441 u64 stats; 442 }; 443 444 /* Physical interface link status */ 445 struct bgx_link_status { 446 u8 msg; 447 u8 link_up; 448 u8 duplex; 449 u32 speed; 450 }; 451 452 /* Get Extra Qset IDs */ 453 struct sqs_alloc { 454 u8 msg; 455 u8 vf_id; 456 u8 qs_count; 457 }; 458 459 struct nicvf_ptr { 460 u8 msg; 461 u8 vf_id; 462 bool sqs_mode; 463 u8 sqs_id; 464 u64 nicvf; 465 }; 466 467 /* Set interface in loopback mode */ 468 struct set_loopback { 469 u8 msg; 470 u8 vf_id; 471 bool enable; 472 }; 473 474 /* 128 bit shared memory between PF and each VF */ 475 union nic_mbx { 476 struct { u8 msg; } msg; 477 struct nic_cfg_msg nic_cfg; 478 struct qs_cfg_msg qs; 479 struct rq_cfg_msg rq; 480 struct sq_cfg_msg sq; 481 struct set_mac_msg mac; 482 struct set_frs_msg frs; 483 struct cpi_cfg_msg cpi_cfg; 484 struct rss_sz_msg rss_size; 485 struct rss_cfg_msg rss_cfg; 486 struct bgx_stats_msg bgx_stats; 487 struct bgx_link_status link_status; 488 struct sqs_alloc sqs_alloc; 489 struct nicvf_ptr nicvf; 490 struct set_loopback lbk; 491 }; 492 493 #define NIC_NODE_ID_MASK 0x03 494 #define NIC_NODE_ID_SHIFT 44 495 496 static inline int nic_get_node_id(struct pci_dev *pdev) 497 { 498 u64 addr = pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM); 499 return ((addr >> NIC_NODE_ID_SHIFT) & NIC_NODE_ID_MASK); 500 } 501 502 static inline bool pass1_silicon(struct pci_dev *pdev) 503 { 504 return pdev->revision < 8; 505 } 506 507 int nicvf_set_real_num_queues(struct net_device *netdev, 508 int tx_queues, int rx_queues); 509 int nicvf_open(struct net_device *netdev); 510 int nicvf_stop(struct net_device *netdev); 511 int nicvf_send_msg_to_pf(struct nicvf *vf, union nic_mbx *mbx); 512 void nicvf_config_rss(struct nicvf *nic); 513 void nicvf_set_rss_key(struct nicvf *nic); 514 void nicvf_set_ethtool_ops(struct net_device *netdev); 515 void nicvf_update_stats(struct nicvf *nic); 516 void nicvf_update_lmac_stats(struct nicvf *nic); 517 518 #endif /* NIC_H */ 519