1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright(c) 2013 - 2019 Intel Corporation. */ 3 4 #ifndef _FM10K_H_ 5 #define _FM10K_H_ 6 7 #include <linux/types.h> 8 #include <linux/etherdevice.h> 9 #include <linux/cpumask.h> 10 #include <linux/rtnetlink.h> 11 #include <linux/if_vlan.h> 12 #include <linux/pci.h> 13 14 #include "fm10k_pf.h" 15 #include "fm10k_vf.h" 16 17 #define FM10K_MAX_JUMBO_FRAME_SIZE 15342 /* Maximum supported size 15K */ 18 19 #define MAX_QUEUES FM10K_MAX_QUEUES_PF 20 21 #define FM10K_MIN_RXD 128 22 #define FM10K_MAX_RXD 4096 23 #define FM10K_DEFAULT_RXD 256 24 25 #define FM10K_MIN_TXD 128 26 #define FM10K_MAX_TXD 4096 27 #define FM10K_DEFAULT_TXD 256 28 #define FM10K_DEFAULT_TX_WORK 256 29 30 #define FM10K_RXBUFFER_256 256 31 #define FM10K_RX_HDR_LEN FM10K_RXBUFFER_256 32 #define FM10K_RXBUFFER_2048 2048 33 #define FM10K_RX_BUFSZ FM10K_RXBUFFER_2048 34 35 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 36 #define FM10K_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 37 38 #define FM10K_MAX_STATIONS 63 39 struct fm10k_l2_accel { 40 int size; 41 u16 count; 42 u16 dglort; 43 struct rcu_head rcu; 44 struct net_device *macvlan[]; 45 }; 46 47 enum fm10k_ring_state_t { 48 __FM10K_TX_DETECT_HANG, 49 __FM10K_HANG_CHECK_ARMED, 50 __FM10K_TX_XPS_INIT_DONE, 51 /* This must be last and is used to calculate BITMAP size */ 52 __FM10K_TX_STATE_SIZE__, 53 }; 54 55 #define check_for_tx_hang(ring) \ 56 test_bit(__FM10K_TX_DETECT_HANG, (ring)->state) 57 #define set_check_for_tx_hang(ring) \ 58 set_bit(__FM10K_TX_DETECT_HANG, (ring)->state) 59 #define clear_check_for_tx_hang(ring) \ 60 clear_bit(__FM10K_TX_DETECT_HANG, (ring)->state) 61 62 struct fm10k_tx_buffer { 63 struct fm10k_tx_desc *next_to_watch; 64 struct sk_buff *skb; 65 unsigned int bytecount; 66 u16 gso_segs; 67 u16 tx_flags; 68 DEFINE_DMA_UNMAP_ADDR(dma); 69 DEFINE_DMA_UNMAP_LEN(len); 70 }; 71 72 struct fm10k_rx_buffer { 73 dma_addr_t dma; 74 struct page *page; 75 u32 page_offset; 76 }; 77 78 struct fm10k_queue_stats { 79 u64 packets; 80 u64 bytes; 81 }; 82 83 struct fm10k_tx_queue_stats { 84 u64 restart_queue; 85 u64 csum_err; 86 u64 tx_busy; 87 u64 tx_done_old; 88 u64 csum_good; 89 }; 90 91 struct fm10k_rx_queue_stats { 92 u64 alloc_failed; 93 u64 csum_err; 94 u64 errors; 95 u64 csum_good; 96 u64 switch_errors; 97 u64 drops; 98 u64 pp_errors; 99 u64 link_errors; 100 u64 length_errors; 101 }; 102 103 struct fm10k_ring { 104 struct fm10k_q_vector *q_vector;/* backpointer to host q_vector */ 105 struct net_device *netdev; /* netdev ring belongs to */ 106 struct device *dev; /* device for DMA mapping */ 107 struct fm10k_l2_accel __rcu *l2_accel; /* L2 acceleration list */ 108 void *desc; /* descriptor ring memory */ 109 union { 110 struct fm10k_tx_buffer *tx_buffer; 111 struct fm10k_rx_buffer *rx_buffer; 112 }; 113 u32 __iomem *tail; 114 DECLARE_BITMAP(state, __FM10K_TX_STATE_SIZE__); 115 dma_addr_t dma; /* phys. address of descriptor ring */ 116 unsigned int size; /* length in bytes */ 117 118 u8 queue_index; /* needed for queue management */ 119 u8 reg_idx; /* holds the special value that gets 120 * the hardware register offset 121 * associated with this ring, which is 122 * different for DCB and RSS modes 123 */ 124 u8 qos_pc; /* priority class of queue */ 125 u16 vid; /* default VLAN ID of queue */ 126 u16 count; /* amount of descriptors */ 127 128 u16 next_to_alloc; 129 u16 next_to_use; 130 u16 next_to_clean; 131 132 struct fm10k_queue_stats stats; 133 struct u64_stats_sync syncp; 134 union { 135 /* Tx */ 136 struct fm10k_tx_queue_stats tx_stats; 137 /* Rx */ 138 struct { 139 struct fm10k_rx_queue_stats rx_stats; 140 struct sk_buff *skb; 141 }; 142 }; 143 } ____cacheline_internodealigned_in_smp; 144 145 struct fm10k_ring_container { 146 struct fm10k_ring *ring; /* pointer to linked list of rings */ 147 unsigned int total_bytes; /* total bytes processed this int */ 148 unsigned int total_packets; /* total packets processed this int */ 149 u16 work_limit; /* total work allowed per interrupt */ 150 u16 itr; /* interrupt throttle rate value */ 151 u8 itr_scale; /* ITR adjustment based on PCI speed */ 152 u8 count; /* total number of rings in vector */ 153 }; 154 155 #define FM10K_ITR_MAX 0x0FFF /* maximum value for ITR */ 156 #define FM10K_ITR_10K 100 /* 100us */ 157 #define FM10K_ITR_20K 50 /* 50us */ 158 #define FM10K_ITR_40K 25 /* 25us */ 159 #define FM10K_ITR_ADAPTIVE 0x8000 /* adaptive interrupt moderation flag */ 160 161 #define ITR_IS_ADAPTIVE(itr) (!!(itr & FM10K_ITR_ADAPTIVE)) 162 163 #define FM10K_TX_ITR_DEFAULT FM10K_ITR_40K 164 #define FM10K_RX_ITR_DEFAULT FM10K_ITR_20K 165 #define FM10K_ITR_ENABLE (FM10K_ITR_AUTOMASK | FM10K_ITR_MASK_CLEAR) 166 txring_txq(const struct fm10k_ring * ring)167 static inline struct netdev_queue *txring_txq(const struct fm10k_ring *ring) 168 { 169 return &ring->netdev->_tx[ring->queue_index]; 170 } 171 172 /* iterator for handling rings in ring container */ 173 #define fm10k_for_each_ring(pos, head) \ 174 for (pos = &(head).ring[(head).count]; (--pos) >= (head).ring;) 175 176 #define MAX_Q_VECTORS 256 177 #define MIN_Q_VECTORS 1 178 enum fm10k_non_q_vectors { 179 FM10K_MBX_VECTOR, 180 NON_Q_VECTORS 181 }; 182 183 #define MIN_MSIX_COUNT(hw) (MIN_Q_VECTORS + NON_Q_VECTORS) 184 185 struct fm10k_q_vector { 186 struct fm10k_intfc *interface; 187 u32 __iomem *itr; /* pointer to ITR register for this vector */ 188 u16 v_idx; /* index of q_vector within interface array */ 189 struct fm10k_ring_container rx, tx; 190 191 struct napi_struct napi; 192 cpumask_t affinity_mask; 193 char name[IFNAMSIZ + 9]; 194 195 #ifdef CONFIG_DEBUG_FS 196 struct dentry *dbg_q_vector; 197 #endif /* CONFIG_DEBUG_FS */ 198 struct rcu_head rcu; /* to avoid race with update stats on free */ 199 200 /* for dynamic allocation of rings associated with this q_vector */ 201 struct fm10k_ring ring[] ____cacheline_internodealigned_in_smp; 202 }; 203 204 enum fm10k_ring_f_enum { 205 RING_F_RSS, 206 RING_F_QOS, 207 RING_F_ARRAY_SIZE /* must be last in enum set */ 208 }; 209 210 struct fm10k_ring_feature { 211 u16 limit; /* upper limit on feature indices */ 212 u16 indices; /* current value of indices */ 213 u16 mask; /* Mask used for feature to ring mapping */ 214 u16 offset; /* offset to start of feature */ 215 }; 216 217 struct fm10k_iov_data { 218 unsigned int num_vfs; 219 unsigned int next_vf_mbx; 220 struct rcu_head rcu; 221 struct fm10k_vf_info vf_info[]; 222 }; 223 224 enum fm10k_macvlan_request_type { 225 FM10K_UC_MAC_REQUEST, 226 FM10K_MC_MAC_REQUEST, 227 FM10K_VLAN_REQUEST 228 }; 229 230 struct fm10k_macvlan_request { 231 enum fm10k_macvlan_request_type type; 232 struct list_head list; 233 union { 234 struct fm10k_mac_request { 235 u8 addr[ETH_ALEN]; 236 u16 glort; 237 u16 vid; 238 } mac; 239 struct fm10k_vlan_request { 240 u32 vid; 241 u8 vsi; 242 } vlan; 243 }; 244 bool set; 245 }; 246 247 /* one work queue for entire driver */ 248 extern struct workqueue_struct *fm10k_workqueue; 249 250 /* The following enumeration contains flags which indicate or enable modified 251 * driver behaviors. To avoid race conditions, the flags are stored in 252 * a BITMAP in the fm10k_intfc structure. The BITMAP should be accessed using 253 * atomic *_bit() operations. 254 */ 255 enum fm10k_flags_t { 256 FM10K_FLAG_RESET_REQUESTED, 257 FM10K_FLAG_RSS_FIELD_IPV4_UDP, 258 FM10K_FLAG_RSS_FIELD_IPV6_UDP, 259 FM10K_FLAG_SWPRI_CONFIG, 260 /* __FM10K_FLAGS_SIZE__ is used to calculate the size of 261 * interface->flags and must be the last value in this 262 * enumeration. 263 */ 264 __FM10K_FLAGS_SIZE__ 265 }; 266 267 enum fm10k_state_t { 268 __FM10K_RESETTING, 269 __FM10K_RESET_DETACHED, 270 __FM10K_RESET_SUSPENDED, 271 __FM10K_DOWN, 272 __FM10K_SERVICE_SCHED, 273 __FM10K_SERVICE_REQUEST, 274 __FM10K_SERVICE_DISABLE, 275 __FM10K_MACVLAN_SCHED, 276 __FM10K_MACVLAN_REQUEST, 277 __FM10K_MACVLAN_DISABLE, 278 __FM10K_LINK_DOWN, 279 __FM10K_UPDATING_STATS, 280 /* This value must be last and determines the BITMAP size */ 281 __FM10K_STATE_SIZE__, 282 }; 283 284 struct fm10k_intfc { 285 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 286 struct net_device *netdev; 287 struct fm10k_l2_accel *l2_accel; /* pointer to L2 acceleration list */ 288 struct pci_dev *pdev; 289 DECLARE_BITMAP(state, __FM10K_STATE_SIZE__); 290 291 /* Access flag values using atomic *_bit() operations */ 292 DECLARE_BITMAP(flags, __FM10K_FLAGS_SIZE__); 293 294 int xcast_mode; 295 296 /* Tx fast path data */ 297 int num_tx_queues; 298 u16 tx_itr; 299 300 /* Rx fast path data */ 301 int num_rx_queues; 302 u16 rx_itr; 303 304 /* TX */ 305 struct fm10k_ring *tx_ring[MAX_QUEUES] ____cacheline_aligned_in_smp; 306 307 u64 restart_queue; 308 u64 tx_busy; 309 u64 tx_csum_errors; 310 u64 alloc_failed; 311 u64 rx_csum_errors; 312 313 u64 tx_bytes_nic; 314 u64 tx_packets_nic; 315 u64 rx_bytes_nic; 316 u64 rx_packets_nic; 317 u64 rx_drops_nic; 318 u64 rx_overrun_pf; 319 u64 rx_overrun_vf; 320 321 /* Debug Statistics */ 322 u64 hw_sm_mbx_full; 323 u64 hw_csum_tx_good; 324 u64 hw_csum_rx_good; 325 u64 rx_switch_errors; 326 u64 rx_drops; 327 u64 rx_pp_errors; 328 u64 rx_link_errors; 329 u64 rx_length_errors; 330 331 u32 tx_timeout_count; 332 333 /* RX */ 334 struct fm10k_ring *rx_ring[MAX_QUEUES]; 335 336 /* Queueing vectors */ 337 struct fm10k_q_vector *q_vector[MAX_Q_VECTORS]; 338 struct msix_entry *msix_entries; 339 int num_q_vectors; /* current number of q_vectors for device */ 340 struct fm10k_ring_feature ring_feature[RING_F_ARRAY_SIZE]; 341 342 /* SR-IOV information management structure */ 343 struct fm10k_iov_data *iov_data; 344 345 struct fm10k_hw_stats stats; 346 struct fm10k_hw hw; 347 /* Mailbox lock */ 348 spinlock_t mbx_lock; 349 u32 __iomem *uc_addr; 350 u32 __iomem *sw_addr; 351 u16 msg_enable; 352 u16 tx_ring_count; 353 u16 rx_ring_count; 354 struct timer_list service_timer; 355 struct work_struct service_task; 356 unsigned long next_stats_update; 357 unsigned long next_tx_hang_check; 358 unsigned long last_reset; 359 unsigned long link_down_event; 360 bool host_ready; 361 bool lport_map_failed; 362 363 u32 reta[FM10K_RETA_SIZE]; 364 u32 rssrk[FM10K_RSSRK_SIZE]; 365 366 /* UDP encapsulation port tracking information */ 367 __be16 vxlan_port; 368 __be16 geneve_port; 369 370 /* MAC/VLAN update queue */ 371 struct list_head macvlan_requests; 372 struct delayed_work macvlan_task; 373 /* MAC/VLAN update queue lock */ 374 spinlock_t macvlan_lock; 375 376 #ifdef CONFIG_DEBUG_FS 377 struct dentry *dbg_intfc; 378 #endif /* CONFIG_DEBUG_FS */ 379 380 #ifdef CONFIG_DCB 381 u8 pfc_en; 382 #endif 383 u8 rx_pause; 384 385 /* GLORT resources in use by PF */ 386 u16 glort; 387 u16 glort_count; 388 389 /* VLAN ID for updating multicast/unicast lists */ 390 u16 vid; 391 }; 392 fm10k_mbx_lock(struct fm10k_intfc * interface)393 static inline void fm10k_mbx_lock(struct fm10k_intfc *interface) 394 { 395 spin_lock(&interface->mbx_lock); 396 } 397 fm10k_mbx_unlock(struct fm10k_intfc * interface)398 static inline void fm10k_mbx_unlock(struct fm10k_intfc *interface) 399 { 400 spin_unlock(&interface->mbx_lock); 401 } 402 fm10k_mbx_trylock(struct fm10k_intfc * interface)403 static inline int fm10k_mbx_trylock(struct fm10k_intfc *interface) 404 { 405 return spin_trylock(&interface->mbx_lock); 406 } 407 408 /* fm10k_test_staterr - test bits in Rx descriptor status and error fields */ fm10k_test_staterr(union fm10k_rx_desc * rx_desc,const u32 stat_err_bits)409 static inline __le32 fm10k_test_staterr(union fm10k_rx_desc *rx_desc, 410 const u32 stat_err_bits) 411 { 412 return rx_desc->d.staterr & cpu_to_le32(stat_err_bits); 413 } 414 415 /* fm10k_desc_unused - calculate if we have unused descriptors */ fm10k_desc_unused(struct fm10k_ring * ring)416 static inline u16 fm10k_desc_unused(struct fm10k_ring *ring) 417 { 418 s16 unused = ring->next_to_clean - ring->next_to_use - 1; 419 420 return likely(unused < 0) ? unused + ring->count : unused; 421 } 422 423 #define FM10K_TX_DESC(R, i) \ 424 (&(((struct fm10k_tx_desc *)((R)->desc))[i])) 425 #define FM10K_RX_DESC(R, i) \ 426 (&(((union fm10k_rx_desc *)((R)->desc))[i])) 427 428 #define FM10K_MAX_TXD_PWR 14 429 #define FM10K_MAX_DATA_PER_TXD (1u << FM10K_MAX_TXD_PWR) 430 431 /* Tx Descriptors needed, worst case */ 432 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), FM10K_MAX_DATA_PER_TXD) 433 #define DESC_NEEDED (MAX_SKB_FRAGS + 4) 434 435 enum fm10k_tx_flags { 436 /* Tx offload flags */ 437 FM10K_TX_FLAGS_CSUM = 0x01, 438 }; 439 440 /* This structure is stored as little endian values as that is the native 441 * format of the Rx descriptor. The ordering of these fields is reversed 442 * from the actual ftag header to allow for a single bswap to take care 443 * of placing all of the values in network order 444 */ 445 union fm10k_ftag_info { 446 __le64 ftag; 447 struct { 448 /* dglort and sglort combined into a single 32bit desc read */ 449 __le32 glort; 450 /* upper 16 bits of VLAN are reserved 0 for swpri_type_user */ 451 __le32 vlan; 452 } d; 453 struct { 454 __le16 dglort; 455 __le16 sglort; 456 __le16 vlan; 457 __le16 swpri_type_user; 458 } w; 459 }; 460 461 struct fm10k_cb { 462 union { 463 __le64 tstamp; 464 unsigned long ts_tx_timeout; 465 }; 466 union fm10k_ftag_info fi; 467 }; 468 469 #define FM10K_CB(skb) ((struct fm10k_cb *)(skb)->cb) 470 471 /* main */ 472 extern char fm10k_driver_name[]; 473 int fm10k_init_queueing_scheme(struct fm10k_intfc *interface); 474 void fm10k_clear_queueing_scheme(struct fm10k_intfc *interface); 475 __be16 fm10k_tx_encap_offload(struct sk_buff *skb); 476 netdev_tx_t fm10k_xmit_frame_ring(struct sk_buff *skb, 477 struct fm10k_ring *tx_ring); 478 void fm10k_tx_timeout_reset(struct fm10k_intfc *interface); 479 u64 fm10k_get_tx_pending(struct fm10k_ring *ring, bool in_sw); 480 bool fm10k_check_tx_hang(struct fm10k_ring *tx_ring); 481 void fm10k_alloc_rx_buffers(struct fm10k_ring *rx_ring, u16 cleaned_count); 482 483 /* PCI */ 484 void fm10k_mbx_free_irq(struct fm10k_intfc *); 485 int fm10k_mbx_request_irq(struct fm10k_intfc *); 486 void fm10k_qv_free_irq(struct fm10k_intfc *interface); 487 int fm10k_qv_request_irq(struct fm10k_intfc *interface); 488 int fm10k_register_pci_driver(void); 489 void fm10k_unregister_pci_driver(void); 490 void fm10k_up(struct fm10k_intfc *interface); 491 void fm10k_down(struct fm10k_intfc *interface); 492 void fm10k_update_stats(struct fm10k_intfc *interface); 493 void fm10k_service_event_schedule(struct fm10k_intfc *interface); 494 void fm10k_macvlan_schedule(struct fm10k_intfc *interface); 495 void fm10k_update_rx_drop_en(struct fm10k_intfc *interface); 496 497 /* Netdev */ 498 struct net_device *fm10k_alloc_netdev(const struct fm10k_info *info); 499 int fm10k_setup_rx_resources(struct fm10k_ring *); 500 int fm10k_setup_tx_resources(struct fm10k_ring *); 501 void fm10k_free_rx_resources(struct fm10k_ring *); 502 void fm10k_free_tx_resources(struct fm10k_ring *); 503 void fm10k_clean_all_rx_rings(struct fm10k_intfc *); 504 void fm10k_clean_all_tx_rings(struct fm10k_intfc *); 505 void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *, 506 struct fm10k_tx_buffer *); 507 void fm10k_restore_rx_state(struct fm10k_intfc *); 508 void fm10k_reset_rx_state(struct fm10k_intfc *); 509 int fm10k_setup_tc(struct net_device *dev, u8 tc); 510 int fm10k_open(struct net_device *netdev); 511 int fm10k_close(struct net_device *netdev); 512 int fm10k_queue_vlan_request(struct fm10k_intfc *interface, u32 vid, 513 u8 vsi, bool set); 514 int fm10k_queue_mac_request(struct fm10k_intfc *interface, u16 glort, 515 const unsigned char *addr, u16 vid, bool set); 516 void fm10k_clear_macvlan_queue(struct fm10k_intfc *interface, 517 u16 glort, bool vlans); 518 519 /* Ethtool */ 520 void fm10k_set_ethtool_ops(struct net_device *dev); 521 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir); 522 523 /* IOV */ 524 s32 fm10k_iov_event(struct fm10k_intfc *interface); 525 s32 fm10k_iov_mbx(struct fm10k_intfc *interface); 526 void fm10k_iov_suspend(struct pci_dev *pdev); 527 int fm10k_iov_resume(struct pci_dev *pdev); 528 void fm10k_iov_disable(struct pci_dev *pdev); 529 int fm10k_iov_configure(struct pci_dev *pdev, int num_vfs); 530 void fm10k_iov_update_stats(struct fm10k_intfc *interface); 531 s32 fm10k_iov_update_pvid(struct fm10k_intfc *interface, u16 glort, u16 pvid); 532 int fm10k_ndo_set_vf_mac(struct net_device *netdev, int vf_idx, u8 *mac); 533 int fm10k_ndo_set_vf_vlan(struct net_device *netdev, 534 int vf_idx, u16 vid, u8 qos, __be16 vlan_proto); 535 int fm10k_ndo_set_vf_bw(struct net_device *netdev, int vf_idx, 536 int __always_unused min_rate, int max_rate); 537 int fm10k_ndo_get_vf_config(struct net_device *netdev, 538 int vf_idx, struct ifla_vf_info *ivi); 539 int fm10k_ndo_get_vf_stats(struct net_device *netdev, 540 int vf_idx, struct ifla_vf_stats *stats); 541 542 /* DebugFS */ 543 #ifdef CONFIG_DEBUG_FS 544 void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector); 545 void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector); 546 void fm10k_dbg_intfc_init(struct fm10k_intfc *interface); 547 void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface); 548 void fm10k_dbg_init(void); 549 void fm10k_dbg_exit(void); 550 #else fm10k_dbg_q_vector_init(struct fm10k_q_vector * q_vector)551 static inline void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector) {} fm10k_dbg_q_vector_exit(struct fm10k_q_vector * q_vector)552 static inline void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector) {} fm10k_dbg_intfc_init(struct fm10k_intfc * interface)553 static inline void fm10k_dbg_intfc_init(struct fm10k_intfc *interface) {} fm10k_dbg_intfc_exit(struct fm10k_intfc * interface)554 static inline void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface) {} fm10k_dbg_init(void)555 static inline void fm10k_dbg_init(void) {} fm10k_dbg_exit(void)556 static inline void fm10k_dbg_exit(void) {} 557 #endif /* CONFIG_DEBUG_FS */ 558 559 /* DCB */ 560 #ifdef CONFIG_DCB 561 void fm10k_dcbnl_set_ops(struct net_device *dev); 562 #else fm10k_dcbnl_set_ops(struct net_device * dev)563 static inline void fm10k_dcbnl_set_ops(struct net_device *dev) {} 564 #endif 565 #endif /* _FM10K_H_ */ 566