1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2018, Intel Corporation. */ 3 4 #ifndef _ICE_H_ 5 #define _ICE_H_ 6 7 #include <linux/types.h> 8 #include <linux/errno.h> 9 #include <linux/kernel.h> 10 #include <linux/module.h> 11 #include <linux/firmware.h> 12 #include <linux/netdevice.h> 13 #include <linux/compiler.h> 14 #include <linux/etherdevice.h> 15 #include <linux/skbuff.h> 16 #include <linux/cpumask.h> 17 #include <linux/rtnetlink.h> 18 #include <linux/if_vlan.h> 19 #include <linux/dma-mapping.h> 20 #include <linux/pci.h> 21 #include <linux/workqueue.h> 22 #include <linux/aer.h> 23 #include <linux/interrupt.h> 24 #include <linux/ethtool.h> 25 #include <linux/timer.h> 26 #include <linux/delay.h> 27 #include <linux/bitmap.h> 28 #include <linux/log2.h> 29 #include <linux/ip.h> 30 #include <linux/sctp.h> 31 #include <linux/ipv6.h> 32 #include <linux/pkt_sched.h> 33 #include <linux/if_bridge.h> 34 #include <linux/ctype.h> 35 #include <linux/bpf.h> 36 #include <linux/avf/virtchnl.h> 37 #include <net/ipv6.h> 38 #include <net/xdp_sock.h> 39 #include "ice_devids.h" 40 #include "ice_type.h" 41 #include "ice_txrx.h" 42 #include "ice_dcb.h" 43 #include "ice_switch.h" 44 #include "ice_common.h" 45 #include "ice_sched.h" 46 #include "ice_virtchnl_pf.h" 47 #include "ice_sriov.h" 48 #include "ice_xsk.h" 49 50 extern const char ice_drv_ver[]; 51 #define ICE_BAR0 0 52 #define ICE_REQ_DESC_MULTIPLE 32 53 #define ICE_MIN_NUM_DESC 64 54 #define ICE_MAX_NUM_DESC 8160 55 #define ICE_DFLT_MIN_RX_DESC 512 56 #define ICE_DFLT_NUM_TX_DESC 256 57 #define ICE_DFLT_NUM_RX_DESC 2048 58 59 #define ICE_DFLT_TRAFFIC_CLASS BIT(0) 60 #define ICE_INT_NAME_STR_LEN (IFNAMSIZ + 16) 61 #define ICE_AQ_LEN 64 62 #define ICE_MBXSQ_LEN 64 63 #define ICE_MBXRQ_LEN 512 64 #define ICE_MIN_MSIX 2 65 #define ICE_NO_VSI 0xffff 66 #define ICE_VSI_MAP_CONTIG 0 67 #define ICE_VSI_MAP_SCATTER 1 68 #define ICE_MAX_SCATTER_TXQS 16 69 #define ICE_MAX_SCATTER_RXQS 16 70 #define ICE_Q_WAIT_RETRY_LIMIT 10 71 #define ICE_Q_WAIT_MAX_RETRY (5 * ICE_Q_WAIT_RETRY_LIMIT) 72 #define ICE_MAX_LG_RSS_QS 256 73 #define ICE_MAX_SMALL_RSS_QS 8 74 #define ICE_RES_VALID_BIT 0x8000 75 #define ICE_RES_MISC_VEC_ID (ICE_RES_VALID_BIT - 1) 76 #define ICE_INVAL_Q_INDEX 0xffff 77 #define ICE_INVAL_VFID 256 78 79 #define ICE_MAX_RESET_WAIT 20 80 81 #define ICE_VSIQF_HKEY_ARRAY_SIZE ((VSIQF_HKEY_MAX_INDEX + 1) * 4) 82 83 #define ICE_DFLT_NETIF_M (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) 84 85 #define ICE_MAX_MTU (ICE_AQ_SET_MAC_FRAME_SIZE_MAX - ICE_ETH_PKT_HDR_PAD) 86 87 #define ICE_UP_TABLE_TRANSLATE(val, i) \ 88 (((val) << ICE_AQ_VSI_UP_TABLE_UP##i##_S) & \ 89 ICE_AQ_VSI_UP_TABLE_UP##i##_M) 90 91 #define ICE_TX_DESC(R, i) (&(((struct ice_tx_desc *)((R)->desc))[i])) 92 #define ICE_RX_DESC(R, i) (&(((union ice_32b_rx_flex_desc *)((R)->desc))[i])) 93 #define ICE_TX_CTX_DESC(R, i) (&(((struct ice_tx_ctx_desc *)((R)->desc))[i])) 94 95 /* Macro for each VSI in a PF */ 96 #define ice_for_each_vsi(pf, i) \ 97 for ((i) = 0; (i) < (pf)->num_alloc_vsi; (i)++) 98 99 /* Macros for each Tx/Rx ring in a VSI */ 100 #define ice_for_each_txq(vsi, i) \ 101 for ((i) = 0; (i) < (vsi)->num_txq; (i)++) 102 103 #define ice_for_each_rxq(vsi, i) \ 104 for ((i) = 0; (i) < (vsi)->num_rxq; (i)++) 105 106 /* Macros for each allocated Tx/Rx ring whether used or not in a VSI */ 107 #define ice_for_each_alloc_txq(vsi, i) \ 108 for ((i) = 0; (i) < (vsi)->alloc_txq; (i)++) 109 110 #define ice_for_each_alloc_rxq(vsi, i) \ 111 for ((i) = 0; (i) < (vsi)->alloc_rxq; (i)++) 112 113 #define ice_for_each_q_vector(vsi, i) \ 114 for ((i) = 0; (i) < (vsi)->num_q_vectors; (i)++) 115 116 #define ICE_UCAST_PROMISC_BITS (ICE_PROMISC_UCAST_TX | ICE_PROMISC_MCAST_TX | \ 117 ICE_PROMISC_UCAST_RX | ICE_PROMISC_MCAST_RX) 118 119 #define ICE_UCAST_VLAN_PROMISC_BITS (ICE_PROMISC_UCAST_TX | \ 120 ICE_PROMISC_MCAST_TX | \ 121 ICE_PROMISC_UCAST_RX | \ 122 ICE_PROMISC_MCAST_RX | \ 123 ICE_PROMISC_VLAN_TX | \ 124 ICE_PROMISC_VLAN_RX) 125 126 #define ICE_MCAST_PROMISC_BITS (ICE_PROMISC_MCAST_TX | ICE_PROMISC_MCAST_RX) 127 128 #define ICE_MCAST_VLAN_PROMISC_BITS (ICE_PROMISC_MCAST_TX | \ 129 ICE_PROMISC_MCAST_RX | \ 130 ICE_PROMISC_VLAN_TX | \ 131 ICE_PROMISC_VLAN_RX) 132 133 struct ice_txq_meta { 134 u32 q_teid; /* Tx-scheduler element identifier */ 135 u16 q_id; /* Entry in VSI's txq_map bitmap */ 136 u16 q_handle; /* Relative index of Tx queue within TC */ 137 u16 vsi_idx; /* VSI index that Tx queue belongs to */ 138 u8 tc; /* TC number that Tx queue belongs to */ 139 }; 140 141 struct ice_tc_info { 142 u16 qoffset; 143 u16 qcount_tx; 144 u16 qcount_rx; 145 u8 netdev_tc; 146 }; 147 148 struct ice_tc_cfg { 149 u8 numtc; /* Total number of enabled TCs */ 150 u8 ena_tc; /* Tx map */ 151 struct ice_tc_info tc_info[ICE_MAX_TRAFFIC_CLASS]; 152 }; 153 154 struct ice_res_tracker { 155 u16 num_entries; 156 u16 end; 157 u16 list[1]; 158 }; 159 160 struct ice_qs_cfg { 161 struct mutex *qs_mutex; /* will be assigned to &pf->avail_q_mutex */ 162 unsigned long *pf_map; 163 unsigned long pf_map_size; 164 unsigned int q_count; 165 unsigned int scatter_count; 166 u16 *vsi_map; 167 u16 vsi_map_offset; 168 u8 mapping_mode; 169 }; 170 171 struct ice_sw { 172 struct ice_pf *pf; 173 u16 sw_id; /* switch ID for this switch */ 174 u16 bridge_mode; /* VEB/VEPA/Port Virtualizer */ 175 }; 176 177 enum ice_state { 178 __ICE_TESTING, 179 __ICE_DOWN, 180 __ICE_NEEDS_RESTART, 181 __ICE_PREPARED_FOR_RESET, /* set by driver when prepared */ 182 __ICE_RESET_OICR_RECV, /* set by driver after rcv reset OICR */ 183 __ICE_DCBNL_DEVRESET, /* set by dcbnl devreset */ 184 __ICE_PFR_REQ, /* set by driver and peers */ 185 __ICE_CORER_REQ, /* set by driver and peers */ 186 __ICE_GLOBR_REQ, /* set by driver and peers */ 187 __ICE_CORER_RECV, /* set by OICR handler */ 188 __ICE_GLOBR_RECV, /* set by OICR handler */ 189 __ICE_EMPR_RECV, /* set by OICR handler */ 190 __ICE_SUSPENDED, /* set on module remove path */ 191 __ICE_RESET_FAILED, /* set by reset/rebuild */ 192 /* When checking for the PF to be in a nominal operating state, the 193 * bits that are grouped at the beginning of the list need to be 194 * checked. Bits occurring before __ICE_STATE_NOMINAL_CHECK_BITS will 195 * be checked. If you need to add a bit into consideration for nominal 196 * operating state, it must be added before 197 * __ICE_STATE_NOMINAL_CHECK_BITS. Do not move this entry's position 198 * without appropriate consideration. 199 */ 200 __ICE_STATE_NOMINAL_CHECK_BITS, 201 __ICE_ADMINQ_EVENT_PENDING, 202 __ICE_MAILBOXQ_EVENT_PENDING, 203 __ICE_MDD_EVENT_PENDING, 204 __ICE_VFLR_EVENT_PENDING, 205 __ICE_FLTR_OVERFLOW_PROMISC, 206 __ICE_VF_DIS, 207 __ICE_CFG_BUSY, 208 __ICE_SERVICE_SCHED, 209 __ICE_SERVICE_DIS, 210 __ICE_OICR_INTR_DIS, /* Global OICR interrupt disabled */ 211 __ICE_STATE_NBITS /* must be last */ 212 }; 213 214 enum ice_vsi_flags { 215 ICE_VSI_FLAG_UMAC_FLTR_CHANGED, 216 ICE_VSI_FLAG_MMAC_FLTR_CHANGED, 217 ICE_VSI_FLAG_VLAN_FLTR_CHANGED, 218 ICE_VSI_FLAG_PROMISC_CHANGED, 219 ICE_VSI_FLAG_NBITS /* must be last */ 220 }; 221 222 /* struct that defines a VSI, associated with a dev */ 223 struct ice_vsi { 224 struct net_device *netdev; 225 struct ice_sw *vsw; /* switch this VSI is on */ 226 struct ice_pf *back; /* back pointer to PF */ 227 struct ice_port_info *port_info; /* back pointer to port_info */ 228 struct ice_ring **rx_rings; /* Rx ring array */ 229 struct ice_ring **tx_rings; /* Tx ring array */ 230 struct ice_q_vector **q_vectors; /* q_vector array */ 231 232 irqreturn_t (*irq_handler)(int irq, void *data); 233 234 u64 tx_linearize; 235 DECLARE_BITMAP(state, __ICE_STATE_NBITS); 236 DECLARE_BITMAP(flags, ICE_VSI_FLAG_NBITS); 237 unsigned int current_netdev_flags; 238 u32 tx_restart; 239 u32 tx_busy; 240 u32 rx_buf_failed; 241 u32 rx_page_failed; 242 int num_q_vectors; 243 int base_vector; /* IRQ base for OS reserved vectors */ 244 enum ice_vsi_type type; 245 u16 vsi_num; /* HW (absolute) index of this VSI */ 246 u16 idx; /* software index in pf->vsi[] */ 247 248 s16 vf_id; /* VF ID for SR-IOV VSIs */ 249 250 u16 ethtype; /* Ethernet protocol for pause frame */ 251 252 /* RSS config */ 253 u16 rss_table_size; /* HW RSS table size */ 254 u16 rss_size; /* Allocated RSS queues */ 255 u8 *rss_hkey_user; /* User configured hash keys */ 256 u8 *rss_lut_user; /* User configured lookup table entries */ 257 u8 rss_lut_type; /* used to configure Get/Set RSS LUT AQ call */ 258 259 u16 max_frame; 260 u16 rx_buf_len; 261 262 struct ice_aqc_vsi_props info; /* VSI properties */ 263 264 /* VSI stats */ 265 struct rtnl_link_stats64 net_stats; 266 struct ice_eth_stats eth_stats; 267 struct ice_eth_stats eth_stats_prev; 268 269 struct list_head tmp_sync_list; /* MAC filters to be synced */ 270 struct list_head tmp_unsync_list; /* MAC filters to be unsynced */ 271 272 u8 irqs_ready:1; 273 u8 current_isup:1; /* Sync 'link up' logging */ 274 u8 stat_offsets_loaded:1; 275 u8 vlan_ena:1; 276 277 /* queue information */ 278 u8 tx_mapping_mode; /* ICE_MAP_MODE_[CONTIG|SCATTER] */ 279 u8 rx_mapping_mode; /* ICE_MAP_MODE_[CONTIG|SCATTER] */ 280 u16 *txq_map; /* index in pf->avail_txqs */ 281 u16 *rxq_map; /* index in pf->avail_rxqs */ 282 u16 alloc_txq; /* Allocated Tx queues */ 283 u16 num_txq; /* Used Tx queues */ 284 u16 alloc_rxq; /* Allocated Rx queues */ 285 u16 num_rxq; /* Used Rx queues */ 286 u16 num_rx_desc; 287 u16 num_tx_desc; 288 struct ice_tc_cfg tc_cfg; 289 struct bpf_prog *xdp_prog; 290 struct ice_ring **xdp_rings; /* XDP ring array */ 291 u16 num_xdp_txq; /* Used XDP queues */ 292 u8 xdp_mapping_mode; /* ICE_MAP_MODE_[CONTIG|SCATTER] */ 293 struct xdp_umem **xsk_umems; 294 u16 num_xsk_umems_used; 295 u16 num_xsk_umems; 296 } ____cacheline_internodealigned_in_smp; 297 298 /* struct that defines an interrupt vector */ 299 struct ice_q_vector { 300 struct ice_vsi *vsi; 301 302 u16 v_idx; /* index in the vsi->q_vector array. */ 303 u16 reg_idx; 304 u8 num_ring_rx; /* total number of Rx rings in vector */ 305 u8 num_ring_tx; /* total number of Tx rings in vector */ 306 u8 itr_countdown; /* when 0 should adjust adaptive ITR */ 307 /* in usecs, need to use ice_intrl_to_usecs_reg() before writing this 308 * value to the device 309 */ 310 u8 intrl; 311 312 struct napi_struct napi; 313 314 struct ice_ring_container rx; 315 struct ice_ring_container tx; 316 317 cpumask_t affinity_mask; 318 struct irq_affinity_notify affinity_notify; 319 320 char name[ICE_INT_NAME_STR_LEN]; 321 } ____cacheline_internodealigned_in_smp; 322 323 enum ice_pf_flags { 324 ICE_FLAG_FLTR_SYNC, 325 ICE_FLAG_RSS_ENA, 326 ICE_FLAG_SRIOV_ENA, 327 ICE_FLAG_SRIOV_CAPABLE, 328 ICE_FLAG_DCB_CAPABLE, 329 ICE_FLAG_DCB_ENA, 330 ICE_FLAG_ADV_FEATURES, 331 ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, 332 ICE_FLAG_NO_MEDIA, 333 ICE_FLAG_FW_LLDP_AGENT, 334 ICE_FLAG_ETHTOOL_CTXT, /* set when ethtool holds RTNL lock */ 335 ICE_FLAG_LEGACY_RX, 336 ICE_PF_FLAGS_NBITS /* must be last */ 337 }; 338 339 struct ice_pf { 340 struct pci_dev *pdev; 341 342 /* OS reserved IRQ details */ 343 struct msix_entry *msix_entries; 344 struct ice_res_tracker *irq_tracker; 345 /* First MSIX vector used by SR-IOV VFs. Calculated by subtracting the 346 * number of MSIX vectors needed for all SR-IOV VFs from the number of 347 * MSIX vectors allowed on this PF. 348 */ 349 u16 sriov_base_vector; 350 351 struct ice_vsi **vsi; /* VSIs created by the driver */ 352 struct ice_sw *first_sw; /* first switch created by firmware */ 353 /* Virtchnl/SR-IOV config info */ 354 struct ice_vf *vf; 355 int num_alloc_vfs; /* actual number of VFs allocated */ 356 u16 num_vfs_supported; /* num VFs supported for this PF */ 357 u16 num_vf_qps; /* num queue pairs per VF */ 358 u16 num_vf_msix; /* num vectors per VF */ 359 DECLARE_BITMAP(state, __ICE_STATE_NBITS); 360 DECLARE_BITMAP(flags, ICE_PF_FLAGS_NBITS); 361 unsigned long *avail_txqs; /* bitmap to track PF Tx queue usage */ 362 unsigned long *avail_rxqs; /* bitmap to track PF Rx queue usage */ 363 unsigned long serv_tmr_period; 364 unsigned long serv_tmr_prev; 365 struct timer_list serv_tmr; 366 struct work_struct serv_task; 367 struct mutex avail_q_mutex; /* protects access to avail_[rx|tx]qs */ 368 struct mutex sw_mutex; /* lock for protecting VSI alloc flow */ 369 struct mutex tc_mutex; /* lock to protect TC changes */ 370 u32 msg_enable; 371 u32 hw_csum_rx_error; 372 u32 oicr_idx; /* Other interrupt cause MSIX vector index */ 373 u32 num_avail_sw_msix; /* remaining MSIX SW vectors left unclaimed */ 374 u16 max_pf_txqs; /* Total Tx queues PF wide */ 375 u16 max_pf_rxqs; /* Total Rx queues PF wide */ 376 u32 num_lan_msix; /* Total MSIX vectors for base driver */ 377 u16 num_lan_tx; /* num LAN Tx queues setup */ 378 u16 num_lan_rx; /* num LAN Rx queues setup */ 379 u16 next_vsi; /* Next free slot in pf->vsi[] - 0-based! */ 380 u16 num_alloc_vsi; 381 u16 corer_count; /* Core reset count */ 382 u16 globr_count; /* Global reset count */ 383 u16 empr_count; /* EMP reset count */ 384 u16 pfr_count; /* PF reset count */ 385 386 struct ice_hw_port_stats stats; 387 struct ice_hw_port_stats stats_prev; 388 struct ice_hw hw; 389 u8 stat_prev_loaded:1; /* has previous stats been loaded */ 390 #ifdef CONFIG_DCB 391 u16 dcbx_cap; 392 #endif /* CONFIG_DCB */ 393 u32 tx_timeout_count; 394 unsigned long tx_timeout_last_recovery; 395 u32 tx_timeout_recovery_level; 396 char int_name[ICE_INT_NAME_STR_LEN]; 397 u32 sw_int_count; 398 }; 399 400 struct ice_netdev_priv { 401 struct ice_vsi *vsi; 402 }; 403 404 /** 405 * ice_irq_dynamic_ena - Enable default interrupt generation settings 406 * @hw: pointer to HW struct 407 * @vsi: pointer to VSI struct, can be NULL 408 * @q_vector: pointer to q_vector, can be NULL 409 */ 410 static inline void 411 ice_irq_dynamic_ena(struct ice_hw *hw, struct ice_vsi *vsi, 412 struct ice_q_vector *q_vector) 413 { 414 u32 vector = (vsi && q_vector) ? q_vector->reg_idx : 415 ((struct ice_pf *)hw->back)->oicr_idx; 416 int itr = ICE_ITR_NONE; 417 u32 val; 418 419 /* clear the PBA here, as this function is meant to clean out all 420 * previous interrupts and enable the interrupt 421 */ 422 val = GLINT_DYN_CTL_INTENA_M | GLINT_DYN_CTL_CLEARPBA_M | 423 (itr << GLINT_DYN_CTL_ITR_INDX_S); 424 if (vsi) 425 if (test_bit(__ICE_DOWN, vsi->state)) 426 return; 427 wr32(hw, GLINT_DYN_CTL(vector), val); 428 } 429 430 /** 431 * ice_netdev_to_pf - Retrieve the PF struct associated with a netdev 432 * @netdev: pointer to the netdev struct 433 */ 434 static inline struct ice_pf *ice_netdev_to_pf(struct net_device *netdev) 435 { 436 struct ice_netdev_priv *np = netdev_priv(netdev); 437 438 return np->vsi->back; 439 } 440 441 static inline bool ice_is_xdp_ena_vsi(struct ice_vsi *vsi) 442 { 443 return !!vsi->xdp_prog; 444 } 445 446 static inline void ice_set_ring_xdp(struct ice_ring *ring) 447 { 448 ring->flags |= ICE_TX_FLAGS_RING_XDP; 449 } 450 451 /** 452 * ice_xsk_umem - get XDP UMEM bound to a ring 453 * @ring - ring to use 454 * 455 * Returns a pointer to xdp_umem structure if there is an UMEM present, 456 * NULL otherwise. 457 */ 458 static inline struct xdp_umem *ice_xsk_umem(struct ice_ring *ring) 459 { 460 struct xdp_umem **umems = ring->vsi->xsk_umems; 461 int qid = ring->q_index; 462 463 if (ice_ring_is_xdp(ring)) 464 qid -= ring->vsi->num_xdp_txq; 465 466 if (!umems || !umems[qid] || !ice_is_xdp_ena_vsi(ring->vsi)) 467 return NULL; 468 469 return umems[qid]; 470 } 471 472 /** 473 * ice_get_main_vsi - Get the PF VSI 474 * @pf: PF instance 475 * 476 * returns pf->vsi[0], which by definition is the PF VSI 477 */ 478 static inline struct ice_vsi *ice_get_main_vsi(struct ice_pf *pf) 479 { 480 if (pf->vsi) 481 return pf->vsi[0]; 482 483 return NULL; 484 } 485 486 int ice_vsi_setup_tx_rings(struct ice_vsi *vsi); 487 int ice_vsi_setup_rx_rings(struct ice_vsi *vsi); 488 void ice_set_ethtool_ops(struct net_device *netdev); 489 void ice_set_ethtool_safe_mode_ops(struct net_device *netdev); 490 u16 ice_get_avail_txq_count(struct ice_pf *pf); 491 u16 ice_get_avail_rxq_count(struct ice_pf *pf); 492 void ice_update_vsi_stats(struct ice_vsi *vsi); 493 void ice_update_pf_stats(struct ice_pf *pf); 494 int ice_up(struct ice_vsi *vsi); 495 int ice_down(struct ice_vsi *vsi); 496 int ice_vsi_cfg(struct ice_vsi *vsi); 497 struct ice_vsi *ice_lb_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi); 498 int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog); 499 int ice_destroy_xdp_rings(struct ice_vsi *vsi); 500 int 501 ice_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, 502 u32 flags); 503 int ice_set_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size); 504 int ice_get_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size); 505 void ice_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size); 506 void ice_print_link_msg(struct ice_vsi *vsi, bool isup); 507 int ice_open(struct net_device *netdev); 508 int ice_stop(struct net_device *netdev); 509 510 #endif /* _ICE_H_ */ 511