1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2018 Intel Corporation */
3
4 #ifndef _IGC_H_
5 #define _IGC_H_
6
7 #include <linux/kobject.h>
8 #include <linux/pci.h>
9 #include <linux/netdevice.h>
10 #include <linux/vmalloc.h>
11 #include <linux/ethtool.h>
12 #include <linux/sctp.h>
13 #include <linux/ptp_clock_kernel.h>
14 #include <linux/timecounter.h>
15 #include <linux/net_tstamp.h>
16 #include <linux/bitfield.h>
17 #include <linux/hrtimer.h>
18 #include <net/xdp.h>
19
20 #include "igc_hw.h"
21
22 void igc_ethtool_set_ops(struct net_device *);
23
24 /* Transmit and receive queues */
25 #define IGC_MAX_RX_QUEUES 4
26 #define IGC_MAX_TX_QUEUES 4
27
28 #define MAX_Q_VECTORS 8
29 #define MAX_STD_JUMBO_FRAME_SIZE 9216
30
31 #define MAX_ETYPE_FILTER 8
32 #define IGC_RETA_SIZE 128
33
34 /* SDP support */
35 #define IGC_N_EXTTS 2
36 #define IGC_N_PEROUT 2
37 #define IGC_N_SDP 4
38
39 #define MAX_FLEX_FILTER 32
40
41 #define IGC_MAX_TX_TSTAMP_REGS 4
42
43 enum igc_mac_filter_type {
44 IGC_MAC_FILTER_TYPE_DST = 0,
45 IGC_MAC_FILTER_TYPE_SRC
46 };
47
48 struct igc_tx_queue_stats {
49 u64 packets;
50 u64 bytes;
51 u64 restart_queue;
52 u64 restart_queue2;
53 };
54
55 struct igc_rx_queue_stats {
56 u64 packets;
57 u64 bytes;
58 u64 drops;
59 u64 csum_err;
60 u64 alloc_failed;
61 };
62
63 struct igc_rx_packet_stats {
64 u64 ipv4_packets; /* IPv4 headers processed */
65 u64 ipv4e_packets; /* IPv4E headers with extensions processed */
66 u64 ipv6_packets; /* IPv6 headers processed */
67 u64 ipv6e_packets; /* IPv6E headers with extensions processed */
68 u64 tcp_packets; /* TCP headers processed */
69 u64 udp_packets; /* UDP headers processed */
70 u64 sctp_packets; /* SCTP headers processed */
71 u64 nfs_packets; /* NFS headers processe */
72 u64 other_packets;
73 };
74
75 struct igc_tx_timestamp_request {
76 struct sk_buff *skb; /* reference to the packet being timestamped */
77 unsigned long start; /* when the tstamp request started (jiffies) */
78 u32 mask; /* _TSYNCTXCTL_TXTT_{X} bit for this request */
79 u32 regl; /* which TXSTMPL_{X} register should be used */
80 u32 regh; /* which TXSTMPH_{X} register should be used */
81 u32 flags; /* flags that should be added to the tx_buffer */
82 };
83
84 struct igc_ring_container {
85 struct igc_ring *ring; /* pointer to linked list of rings */
86 unsigned int total_bytes; /* total bytes processed this int */
87 unsigned int total_packets; /* total packets processed this int */
88 u16 work_limit; /* total work allowed per interrupt */
89 u8 count; /* total number of rings in vector */
90 u8 itr; /* current ITR setting for ring */
91 };
92
93 struct igc_ring {
94 struct igc_q_vector *q_vector; /* backlink to q_vector */
95 struct net_device *netdev; /* back pointer to net_device */
96 struct device *dev; /* device for dma mapping */
97 union { /* array of buffer info structs */
98 struct igc_tx_buffer *tx_buffer_info;
99 struct igc_rx_buffer *rx_buffer_info;
100 };
101 void *desc; /* descriptor ring memory */
102 unsigned long flags; /* ring specific flags */
103 void __iomem *tail; /* pointer to ring tail register */
104 dma_addr_t dma; /* phys address of the ring */
105 unsigned int size; /* length of desc. ring in bytes */
106
107 u16 count; /* number of desc. in the ring */
108 u8 queue_index; /* logical index of the ring*/
109 u8 reg_idx; /* physical index of the ring */
110 bool launchtime_enable; /* true if LaunchTime is enabled */
111 ktime_t last_tx_cycle; /* end of the cycle with a launchtime transmission */
112 ktime_t last_ff_cycle; /* Last cycle with an active first flag */
113
114 u32 start_time;
115 u32 end_time;
116 u32 max_sdu;
117 bool oper_gate_closed; /* Operating gate. True if the TX Queue is closed */
118 bool admin_gate_closed; /* Future gate. True if the TX Queue will be closed */
119
120 /* CBS parameters */
121 bool cbs_enable; /* indicates if CBS is enabled */
122 s32 idleslope; /* idleSlope in kbps */
123 s32 sendslope; /* sendSlope in kbps */
124 s32 hicredit; /* hiCredit in bytes */
125 s32 locredit; /* loCredit in bytes */
126
127 /* everything past this point are written often */
128 u16 next_to_clean;
129 u16 next_to_use;
130 u16 next_to_alloc;
131
132 union {
133 /* TX */
134 struct {
135 struct igc_tx_queue_stats tx_stats;
136 struct u64_stats_sync tx_syncp;
137 struct u64_stats_sync tx_syncp2;
138 };
139 /* RX */
140 struct {
141 struct igc_rx_queue_stats rx_stats;
142 struct igc_rx_packet_stats pkt_stats;
143 struct u64_stats_sync rx_syncp;
144 struct sk_buff *skb;
145 };
146 };
147
148 struct xdp_rxq_info xdp_rxq;
149 struct xsk_buff_pool *xsk_pool;
150 } ____cacheline_internodealigned_in_smp;
151
152 /* Board specific private data structure */
153 struct igc_adapter {
154 struct net_device *netdev;
155
156 struct ethtool_eee eee;
157 u16 eee_advert;
158
159 unsigned long state;
160 unsigned int flags;
161 unsigned int num_q_vectors;
162
163 struct msix_entry *msix_entries;
164
165 /* TX */
166 u16 tx_work_limit;
167 u32 tx_timeout_count;
168 int num_tx_queues;
169 struct igc_ring *tx_ring[IGC_MAX_TX_QUEUES];
170
171 /* RX */
172 int num_rx_queues;
173 struct igc_ring *rx_ring[IGC_MAX_RX_QUEUES];
174
175 struct timer_list watchdog_timer;
176 struct timer_list dma_err_timer;
177 struct timer_list phy_info_timer;
178 struct hrtimer hrtimer;
179
180 u32 wol;
181 u32 en_mng_pt;
182 u16 link_speed;
183 u16 link_duplex;
184
185 u8 port_num;
186
187 u8 __iomem *io_addr;
188 /* Interrupt Throttle Rate */
189 u32 rx_itr_setting;
190 u32 tx_itr_setting;
191
192 struct work_struct reset_task;
193 struct work_struct watchdog_task;
194 struct work_struct dma_err_task;
195 bool fc_autoneg;
196
197 u8 tx_timeout_factor;
198
199 int msg_enable;
200 u32 max_frame_size;
201 u32 min_frame_size;
202
203 int tc_setup_type;
204 ktime_t base_time;
205 ktime_t cycle_time;
206 bool taprio_offload_enable;
207 u32 qbv_config_change_errors;
208 bool qbv_transition;
209 unsigned int qbv_count;
210 /* Access to oper_gate_closed, admin_gate_closed and qbv_transition
211 * are protected by the qbv_tx_lock.
212 */
213 spinlock_t qbv_tx_lock;
214
215 /* OS defined structs */
216 struct pci_dev *pdev;
217 /* lock for statistics */
218 spinlock_t stats64_lock;
219 struct rtnl_link_stats64 stats64;
220
221 /* structs defined in igc_hw.h */
222 struct igc_hw hw;
223 struct igc_hw_stats stats;
224
225 struct igc_q_vector *q_vector[MAX_Q_VECTORS];
226 u32 eims_enable_mask;
227 u32 eims_other;
228
229 u16 tx_ring_count;
230 u16 rx_ring_count;
231
232 u32 tx_hwtstamp_timeouts;
233 u32 tx_hwtstamp_skipped;
234 u32 rx_hwtstamp_cleared;
235
236 u32 rss_queues;
237 u32 rss_indir_tbl_init;
238
239 /* Any access to elements in nfc_rule_list is protected by the
240 * nfc_rule_lock.
241 */
242 struct mutex nfc_rule_lock;
243 struct list_head nfc_rule_list;
244 unsigned int nfc_rule_count;
245
246 u8 rss_indir_tbl[IGC_RETA_SIZE];
247
248 unsigned long link_check_timeout;
249 struct igc_info ei;
250
251 u32 test_icr;
252
253 struct ptp_clock *ptp_clock;
254 struct ptp_clock_info ptp_caps;
255 /* Access to ptp_tx_skb and ptp_tx_start are protected by the
256 * ptp_tx_lock.
257 */
258 spinlock_t ptp_tx_lock;
259 struct igc_tx_timestamp_request tx_tstamp[IGC_MAX_TX_TSTAMP_REGS];
260 struct hwtstamp_config tstamp_config;
261 unsigned int ptp_flags;
262 /* System time value lock */
263 spinlock_t tmreg_lock;
264 struct cyclecounter cc;
265 struct timecounter tc;
266 struct timespec64 prev_ptp_time; /* Pre-reset PTP clock */
267 ktime_t ptp_reset_start; /* Reset time in clock mono */
268 struct system_time_snapshot snapshot;
269
270 char fw_version[32];
271
272 struct bpf_prog *xdp_prog;
273
274 bool pps_sys_wrap_on;
275
276 struct ptp_pin_desc sdp_config[IGC_N_SDP];
277 struct {
278 struct timespec64 start;
279 struct timespec64 period;
280 } perout[IGC_N_PEROUT];
281 };
282
283 void igc_up(struct igc_adapter *adapter);
284 void igc_down(struct igc_adapter *adapter);
285 int igc_open(struct net_device *netdev);
286 int igc_close(struct net_device *netdev);
287 int igc_setup_tx_resources(struct igc_ring *ring);
288 int igc_setup_rx_resources(struct igc_ring *ring);
289 void igc_free_tx_resources(struct igc_ring *ring);
290 void igc_free_rx_resources(struct igc_ring *ring);
291 unsigned int igc_get_max_rss_queues(struct igc_adapter *adapter);
292 void igc_set_flag_queue_pairs(struct igc_adapter *adapter,
293 const u32 max_rss_queues);
294 int igc_reinit_queues(struct igc_adapter *adapter);
295 void igc_write_rss_indir_tbl(struct igc_adapter *adapter);
296 bool igc_has_link(struct igc_adapter *adapter);
297 void igc_reset(struct igc_adapter *adapter);
298 void igc_update_stats(struct igc_adapter *adapter);
299 void igc_disable_rx_ring(struct igc_ring *ring);
300 void igc_enable_rx_ring(struct igc_ring *ring);
301 void igc_disable_tx_ring(struct igc_ring *ring);
302 void igc_enable_tx_ring(struct igc_ring *ring);
303 int igc_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags);
304
305 /* igc_dump declarations */
306 void igc_rings_dump(struct igc_adapter *adapter);
307 void igc_regs_dump(struct igc_adapter *adapter);
308
309 extern char igc_driver_name[];
310
311 #define IGC_REGS_LEN 740
312
313 /* flags controlling PTP/1588 function */
314 #define IGC_PTP_ENABLED BIT(0)
315
316 /* Flags definitions */
317 #define IGC_FLAG_HAS_MSI BIT(0)
318 #define IGC_FLAG_QUEUE_PAIRS BIT(3)
319 #define IGC_FLAG_DMAC BIT(4)
320 #define IGC_FLAG_PTP BIT(8)
321 #define IGC_FLAG_WOL_SUPPORTED BIT(8)
322 #define IGC_FLAG_NEED_LINK_UPDATE BIT(9)
323 #define IGC_FLAG_HAS_MSIX BIT(13)
324 #define IGC_FLAG_EEE BIT(14)
325 #define IGC_FLAG_VLAN_PROMISC BIT(15)
326 #define IGC_FLAG_RX_LEGACY BIT(16)
327 #define IGC_FLAG_TSN_QBV_ENABLED BIT(17)
328 #define IGC_FLAG_TSN_QAV_ENABLED BIT(18)
329
330 #define IGC_FLAG_TSN_ANY_ENABLED \
331 (IGC_FLAG_TSN_QBV_ENABLED | IGC_FLAG_TSN_QAV_ENABLED)
332
333 #define IGC_FLAG_RSS_FIELD_IPV4_UDP BIT(6)
334 #define IGC_FLAG_RSS_FIELD_IPV6_UDP BIT(7)
335
336 #define IGC_MRQC_ENABLE_RSS_MQ 0x00000002
337 #define IGC_MRQC_RSS_FIELD_IPV4_UDP 0x00400000
338 #define IGC_MRQC_RSS_FIELD_IPV6_UDP 0x00800000
339
340 /* RX-desc Write-Back format RSS Type's */
341 enum igc_rss_type_num {
342 IGC_RSS_TYPE_NO_HASH = 0,
343 IGC_RSS_TYPE_HASH_TCP_IPV4 = 1,
344 IGC_RSS_TYPE_HASH_IPV4 = 2,
345 IGC_RSS_TYPE_HASH_TCP_IPV6 = 3,
346 IGC_RSS_TYPE_HASH_IPV6_EX = 4,
347 IGC_RSS_TYPE_HASH_IPV6 = 5,
348 IGC_RSS_TYPE_HASH_TCP_IPV6_EX = 6,
349 IGC_RSS_TYPE_HASH_UDP_IPV4 = 7,
350 IGC_RSS_TYPE_HASH_UDP_IPV6 = 8,
351 IGC_RSS_TYPE_HASH_UDP_IPV6_EX = 9,
352 IGC_RSS_TYPE_MAX = 10,
353 };
354 #define IGC_RSS_TYPE_MAX_TABLE 16
355 #define IGC_RSS_TYPE_MASK GENMASK(3,0) /* 4-bits (3:0) = mask 0x0F */
356
357 /* igc_rss_type - Rx descriptor RSS type field */
igc_rss_type(const union igc_adv_rx_desc * rx_desc)358 static inline u32 igc_rss_type(const union igc_adv_rx_desc *rx_desc)
359 {
360 /* RSS Type 4-bits (3:0) number: 0-9 (above 9 is reserved)
361 * Accessing the same bits via u16 (wb.lower.lo_dword.hs_rss.pkt_info)
362 * is slightly slower than via u32 (wb.lower.lo_dword.data)
363 */
364 return le32_get_bits(rx_desc->wb.lower.lo_dword.data, IGC_RSS_TYPE_MASK);
365 }
366
367 /* Interrupt defines */
368 #define IGC_START_ITR 648 /* ~6000 ints/sec */
369 #define IGC_4K_ITR 980
370 #define IGC_20K_ITR 196
371 #define IGC_70K_ITR 56
372
373 #define IGC_DEFAULT_ITR 3 /* dynamic */
374 #define IGC_MAX_ITR_USECS 10000
375 #define IGC_MIN_ITR_USECS 10
376 #define NON_Q_VECTORS 1
377 #define MAX_MSIX_ENTRIES 10
378
379 /* TX/RX descriptor defines */
380 #define IGC_DEFAULT_TXD 256
381 #define IGC_DEFAULT_TX_WORK 128
382 #define IGC_MIN_TXD 64
383 #define IGC_MAX_TXD 4096
384
385 #define IGC_DEFAULT_RXD 256
386 #define IGC_MIN_RXD 64
387 #define IGC_MAX_RXD 4096
388
389 /* Supported Rx Buffer Sizes */
390 #define IGC_RXBUFFER_256 256
391 #define IGC_RXBUFFER_2048 2048
392 #define IGC_RXBUFFER_3072 3072
393
394 #define AUTO_ALL_MODES 0
395 #define IGC_RX_HDR_LEN IGC_RXBUFFER_256
396
397 /* Transmit and receive latency (for PTP timestamps) */
398 #define IGC_I225_TX_LATENCY_10 240
399 #define IGC_I225_TX_LATENCY_100 58
400 #define IGC_I225_TX_LATENCY_1000 80
401 #define IGC_I225_TX_LATENCY_2500 1325
402 #define IGC_I225_RX_LATENCY_10 6450
403 #define IGC_I225_RX_LATENCY_100 185
404 #define IGC_I225_RX_LATENCY_1000 300
405 #define IGC_I225_RX_LATENCY_2500 1485
406
407 /* RX and TX descriptor control thresholds.
408 * PTHRESH - MAC will consider prefetch if it has fewer than this number of
409 * descriptors available in its onboard memory.
410 * Setting this to 0 disables RX descriptor prefetch.
411 * HTHRESH - MAC will only prefetch if there are at least this many descriptors
412 * available in host memory.
413 * If PTHRESH is 0, this should also be 0.
414 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
415 * descriptors until either it has this many to write back, or the
416 * ITR timer expires.
417 */
418 #define IGC_RX_PTHRESH 8
419 #define IGC_RX_HTHRESH 8
420 #define IGC_TX_PTHRESH 8
421 #define IGC_TX_HTHRESH 1
422 #define IGC_RX_WTHRESH 4
423 #define IGC_TX_WTHRESH 16
424
425 #define IGC_RX_DMA_ATTR \
426 (DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING)
427
428 #define IGC_TS_HDR_LEN 16
429
430 #define IGC_SKB_PAD (NET_SKB_PAD + NET_IP_ALIGN)
431
432 #if (PAGE_SIZE < 8192)
433 #define IGC_MAX_FRAME_BUILD_SKB \
434 (SKB_WITH_OVERHEAD(IGC_RXBUFFER_2048) - IGC_SKB_PAD - IGC_TS_HDR_LEN)
435 #else
436 #define IGC_MAX_FRAME_BUILD_SKB (IGC_RXBUFFER_2048 - IGC_TS_HDR_LEN)
437 #endif
438
439 /* How many Rx Buffers do we bundle into one write to the hardware ? */
440 #define IGC_RX_BUFFER_WRITE 16 /* Must be power of 2 */
441
442 /* VLAN info */
443 #define IGC_TX_FLAGS_VLAN_MASK 0xffff0000
444 #define IGC_TX_FLAGS_VLAN_SHIFT 16
445
446 /* igc_test_staterr - tests bits within Rx descriptor status and error fields */
igc_test_staterr(union igc_adv_rx_desc * rx_desc,const u32 stat_err_bits)447 static inline __le32 igc_test_staterr(union igc_adv_rx_desc *rx_desc,
448 const u32 stat_err_bits)
449 {
450 return rx_desc->wb.upper.status_error & cpu_to_le32(stat_err_bits);
451 }
452
453 enum igc_state_t {
454 __IGC_TESTING,
455 __IGC_RESETTING,
456 __IGC_DOWN,
457 };
458
459 enum igc_tx_flags {
460 /* cmd_type flags */
461 IGC_TX_FLAGS_VLAN = 0x01,
462 IGC_TX_FLAGS_TSO = 0x02,
463 IGC_TX_FLAGS_TSTAMP = 0x04,
464
465 /* olinfo flags */
466 IGC_TX_FLAGS_IPV4 = 0x10,
467 IGC_TX_FLAGS_CSUM = 0x20,
468
469 IGC_TX_FLAGS_TSTAMP_1 = 0x100,
470 IGC_TX_FLAGS_TSTAMP_2 = 0x200,
471 IGC_TX_FLAGS_TSTAMP_3 = 0x400,
472 };
473
474 enum igc_boards {
475 board_base,
476 };
477
478 /* The largest size we can write to the descriptor is 65535. In order to
479 * maintain a power of two alignment we have to limit ourselves to 32K.
480 */
481 #define IGC_MAX_TXD_PWR 15
482 #define IGC_MAX_DATA_PER_TXD BIT(IGC_MAX_TXD_PWR)
483
484 /* Tx Descriptors needed, worst case */
485 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IGC_MAX_DATA_PER_TXD)
486 #define DESC_NEEDED (MAX_SKB_FRAGS + 4)
487
488 enum igc_tx_buffer_type {
489 IGC_TX_BUFFER_TYPE_SKB,
490 IGC_TX_BUFFER_TYPE_XDP,
491 IGC_TX_BUFFER_TYPE_XSK,
492 };
493
494 /* wrapper around a pointer to a socket buffer,
495 * so a DMA handle can be stored along with the buffer
496 */
497 struct igc_tx_buffer {
498 union igc_adv_tx_desc *next_to_watch;
499 unsigned long time_stamp;
500 enum igc_tx_buffer_type type;
501 union {
502 struct sk_buff *skb;
503 struct xdp_frame *xdpf;
504 };
505 unsigned int bytecount;
506 u16 gso_segs;
507 __be16 protocol;
508
509 DEFINE_DMA_UNMAP_ADDR(dma);
510 DEFINE_DMA_UNMAP_LEN(len);
511 u32 tx_flags;
512 };
513
514 struct igc_rx_buffer {
515 union {
516 struct {
517 dma_addr_t dma;
518 struct page *page;
519 #if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536)
520 __u32 page_offset;
521 #else
522 __u16 page_offset;
523 #endif
524 __u16 pagecnt_bias;
525 };
526 struct xdp_buff *xdp;
527 };
528 };
529
530 /* context wrapper around xdp_buff to provide access to descriptor metadata */
531 struct igc_xdp_buff {
532 struct xdp_buff xdp;
533 union igc_adv_rx_desc *rx_desc;
534 ktime_t rx_ts; /* data indication bit IGC_RXDADV_STAT_TSIP */
535 };
536
537 struct igc_q_vector {
538 struct igc_adapter *adapter; /* backlink */
539 void __iomem *itr_register;
540 u32 eims_value; /* EIMS mask value */
541
542 u16 itr_val;
543 u8 set_itr;
544
545 struct igc_ring_container rx, tx;
546
547 struct napi_struct napi;
548
549 struct rcu_head rcu; /* to avoid race with update stats on free */
550 char name[IFNAMSIZ + 9];
551 struct net_device poll_dev;
552
553 /* for dynamic allocation of rings associated with this q_vector */
554 struct igc_ring ring[] ____cacheline_internodealigned_in_smp;
555 };
556
557 enum igc_filter_match_flags {
558 IGC_FILTER_FLAG_ETHER_TYPE = BIT(0),
559 IGC_FILTER_FLAG_VLAN_TCI = BIT(1),
560 IGC_FILTER_FLAG_SRC_MAC_ADDR = BIT(2),
561 IGC_FILTER_FLAG_DST_MAC_ADDR = BIT(3),
562 IGC_FILTER_FLAG_USER_DATA = BIT(4),
563 IGC_FILTER_FLAG_VLAN_ETYPE = BIT(5),
564 };
565
566 struct igc_nfc_filter {
567 u8 match_flags;
568 u16 etype;
569 __be16 vlan_etype;
570 u16 vlan_tci;
571 u8 src_addr[ETH_ALEN];
572 u8 dst_addr[ETH_ALEN];
573 u8 user_data[8];
574 u8 user_mask[8];
575 u8 flex_index;
576 u8 rx_queue;
577 u8 prio;
578 u8 immediate_irq;
579 u8 drop;
580 };
581
582 struct igc_nfc_rule {
583 struct list_head list;
584 struct igc_nfc_filter filter;
585 u32 location;
586 u16 action;
587 bool flex;
588 };
589
590 /* IGC supports a total of 32 NFC rules: 16 MAC address based, 8 VLAN priority
591 * based, 8 ethertype based and 32 Flex filter based rules.
592 */
593 #define IGC_MAX_RXNFC_RULES 64
594
595 struct igc_flex_filter {
596 u8 index;
597 u8 data[128];
598 u8 mask[16];
599 u8 length;
600 u8 rx_queue;
601 u8 prio;
602 u8 immediate_irq;
603 u8 drop;
604 };
605
606 /* igc_desc_unused - calculate if we have unused descriptors */
igc_desc_unused(const struct igc_ring * ring)607 static inline u16 igc_desc_unused(const struct igc_ring *ring)
608 {
609 u16 ntc = ring->next_to_clean;
610 u16 ntu = ring->next_to_use;
611
612 return ((ntc > ntu) ? 0 : ring->count) + ntc - ntu - 1;
613 }
614
igc_get_phy_info(struct igc_hw * hw)615 static inline s32 igc_get_phy_info(struct igc_hw *hw)
616 {
617 if (hw->phy.ops.get_phy_info)
618 return hw->phy.ops.get_phy_info(hw);
619
620 return 0;
621 }
622
igc_reset_phy(struct igc_hw * hw)623 static inline s32 igc_reset_phy(struct igc_hw *hw)
624 {
625 if (hw->phy.ops.reset)
626 return hw->phy.ops.reset(hw);
627
628 return 0;
629 }
630
txring_txq(const struct igc_ring * tx_ring)631 static inline struct netdev_queue *txring_txq(const struct igc_ring *tx_ring)
632 {
633 return netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index);
634 }
635
636 enum igc_ring_flags_t {
637 IGC_RING_FLAG_RX_3K_BUFFER,
638 IGC_RING_FLAG_RX_BUILD_SKB_ENABLED,
639 IGC_RING_FLAG_RX_SCTP_CSUM,
640 IGC_RING_FLAG_RX_LB_VLAN_BSWAP,
641 IGC_RING_FLAG_TX_CTX_IDX,
642 IGC_RING_FLAG_TX_DETECT_HANG,
643 IGC_RING_FLAG_AF_XDP_ZC,
644 IGC_RING_FLAG_TX_HWTSTAMP,
645 };
646
647 #define ring_uses_large_buffer(ring) \
648 test_bit(IGC_RING_FLAG_RX_3K_BUFFER, &(ring)->flags)
649 #define set_ring_uses_large_buffer(ring) \
650 set_bit(IGC_RING_FLAG_RX_3K_BUFFER, &(ring)->flags)
651 #define clear_ring_uses_large_buffer(ring) \
652 clear_bit(IGC_RING_FLAG_RX_3K_BUFFER, &(ring)->flags)
653
654 #define ring_uses_build_skb(ring) \
655 test_bit(IGC_RING_FLAG_RX_BUILD_SKB_ENABLED, &(ring)->flags)
656
igc_rx_bufsz(struct igc_ring * ring)657 static inline unsigned int igc_rx_bufsz(struct igc_ring *ring)
658 {
659 #if (PAGE_SIZE < 8192)
660 if (ring_uses_large_buffer(ring))
661 return IGC_RXBUFFER_3072;
662
663 if (ring_uses_build_skb(ring))
664 return IGC_MAX_FRAME_BUILD_SKB + IGC_TS_HDR_LEN;
665 #endif
666 return IGC_RXBUFFER_2048;
667 }
668
igc_rx_pg_order(struct igc_ring * ring)669 static inline unsigned int igc_rx_pg_order(struct igc_ring *ring)
670 {
671 #if (PAGE_SIZE < 8192)
672 if (ring_uses_large_buffer(ring))
673 return 1;
674 #endif
675 return 0;
676 }
677
igc_read_phy_reg(struct igc_hw * hw,u32 offset,u16 * data)678 static inline s32 igc_read_phy_reg(struct igc_hw *hw, u32 offset, u16 *data)
679 {
680 if (hw->phy.ops.read_reg)
681 return hw->phy.ops.read_reg(hw, offset, data);
682
683 return -EOPNOTSUPP;
684 }
685
686 void igc_reinit_locked(struct igc_adapter *);
687 struct igc_nfc_rule *igc_get_nfc_rule(struct igc_adapter *adapter,
688 u32 location);
689 int igc_add_nfc_rule(struct igc_adapter *adapter, struct igc_nfc_rule *rule);
690 void igc_del_nfc_rule(struct igc_adapter *adapter, struct igc_nfc_rule *rule);
691
692 void igc_ptp_init(struct igc_adapter *adapter);
693 void igc_ptp_reset(struct igc_adapter *adapter);
694 void igc_ptp_suspend(struct igc_adapter *adapter);
695 void igc_ptp_stop(struct igc_adapter *adapter);
696 ktime_t igc_ptp_rx_pktstamp(struct igc_adapter *adapter, __le32 *buf);
697 int igc_ptp_set_ts_config(struct net_device *netdev, struct ifreq *ifr);
698 int igc_ptp_get_ts_config(struct net_device *netdev, struct ifreq *ifr);
699 void igc_ptp_tx_hang(struct igc_adapter *adapter);
700 void igc_ptp_read(struct igc_adapter *adapter, struct timespec64 *ts);
701 void igc_ptp_tx_tstamp_event(struct igc_adapter *adapter);
702
703 #define igc_rx_pg_size(_ring) (PAGE_SIZE << igc_rx_pg_order(_ring))
704
705 #define IGC_TXD_DCMD (IGC_ADVTXD_DCMD_EOP | IGC_ADVTXD_DCMD_RS)
706
707 #define IGC_RX_DESC(R, i) \
708 (&(((union igc_adv_rx_desc *)((R)->desc))[i]))
709 #define IGC_TX_DESC(R, i) \
710 (&(((union igc_adv_tx_desc *)((R)->desc))[i]))
711 #define IGC_TX_CTXTDESC(R, i) \
712 (&(((struct igc_adv_tx_context_desc *)((R)->desc))[i]))
713
714 #endif /* _IGC_H_ */
715
