2 * Copyright (C) 2005 - 2014 Emulex
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
10 * Contact Information:
11 * linux-drivers@emulex.com
15 * Costa Mesa, CA 92626
21 #include <linux/pci.h>
22 #include <linux/etherdevice.h>
23 #include <linux/delay.h>
27 #include <linux/if_vlan.h>
28 #include <linux/workqueue.h>
29 #include <linux/interrupt.h>
30 #include <linux/firmware.h>
31 #include <linux/slab.h>
32 #include <linux/u64_stats_sync.h>
37 #define DRV_VER "10.4u"
38 #define DRV_NAME "be2net"
39 #define BE_NAME "Emulex BladeEngine2"
40 #define BE3_NAME "Emulex BladeEngine3"
41 #define OC_NAME "Emulex OneConnect"
42 #define OC_NAME_BE OC_NAME "(be3)"
43 #define OC_NAME_LANCER OC_NAME "(Lancer)"
44 #define OC_NAME_SH OC_NAME "(Skyhawk)"
45 #define DRV_DESC "Emulex OneConnect NIC Driver"
47 #define BE_VENDOR_ID 0x19a2
48 #define EMULEX_VENDOR_ID 0x10df
49 #define BE_DEVICE_ID1 0x211
50 #define BE_DEVICE_ID2 0x221
51 #define OC_DEVICE_ID1 0x700 /* Device Id for BE2 cards */
52 #define OC_DEVICE_ID2 0x710 /* Device Id for BE3 cards */
53 #define OC_DEVICE_ID3 0xe220 /* Device id for Lancer cards */
54 #define OC_DEVICE_ID4 0xe228 /* Device id for VF in Lancer */
55 #define OC_DEVICE_ID5 0x720 /* Device Id for Skyhawk cards */
56 #define OC_DEVICE_ID6 0x728 /* Device id for VF in SkyHawk */
57 #define OC_SUBSYS_DEVICE_ID1 0xE602
58 #define OC_SUBSYS_DEVICE_ID2 0xE642
59 #define OC_SUBSYS_DEVICE_ID3 0xE612
60 #define OC_SUBSYS_DEVICE_ID4 0xE652
62 static inline char *nic_name(struct pci_dev *pdev)
64 switch (pdev->device) {
71 return OC_NAME_LANCER;
82 /* Number of bytes of an RX frame that are copied to skb->data */
83 #define BE_HDR_LEN ((u16) 64)
84 /* allocate extra space to allow tunneling decapsulation without head reallocation */
85 #define BE_RX_SKB_ALLOC_SIZE (BE_HDR_LEN + 64)
87 #define BE_MAX_JUMBO_FRAME_SIZE 9018
88 #define BE_MIN_MTU 256
89 #define BE_MAX_MTU (BE_MAX_JUMBO_FRAME_SIZE - \
90 (ETH_HLEN + ETH_FCS_LEN))
92 #define BE_NUM_VLANS_SUPPORTED 64
93 #define BE_MAX_EQD 128u
94 #define BE_MAX_TX_FRAG_COUNT 30
96 #define EVNT_Q_LEN 1024
98 #define TX_CQ_LEN 1024
99 #define RX_Q_LEN 1024 /* Does not support any other value */
100 #define RX_CQ_LEN 1024
101 #define MCC_Q_LEN 128 /* total size not to exceed 8 pages */
102 #define MCC_CQ_LEN 256
104 #define BE2_MAX_RSS_QS 4
105 #define BE3_MAX_RSS_QS 16
106 #define BE3_MAX_TX_QS 16
107 #define BE3_MAX_EVT_QS 16
108 #define BE3_SRIOV_MAX_EVT_QS 8
111 #define MAX_EVT_QS 32
114 #define MAX_ROCE_EQS 5
115 #define MAX_MSIX_VECTORS 32
116 #define MIN_MSIX_VECTORS 1
117 #define BE_NAPI_WEIGHT 64
118 #define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
119 #define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
121 #define MAX_VFS 30 /* Max VFs supported by BE3 FW */
122 #define FW_VER_LEN 32
124 #define RSS_INDIR_TABLE_LEN 128
125 #define RSS_HASH_KEY_LEN 40
133 struct be_queue_info {
134 struct be_dma_mem dma_mem;
136 u16 entry_size; /* Size of an element in the queue */
140 atomic_t used; /* Number of valid elements in the queue */
143 static inline u32 MODULO(u16 val, u16 limit)
145 BUG_ON(limit & (limit - 1));
146 return val & (limit - 1);
149 static inline void index_adv(u16 *index, u16 val, u16 limit)
151 *index = MODULO((*index + val), limit);
154 static inline void index_inc(u16 *index, u16 limit)
156 *index = MODULO((*index + 1), limit);
159 static inline void *queue_head_node(struct be_queue_info *q)
161 return q->dma_mem.va + q->head * q->entry_size;
164 static inline void *queue_tail_node(struct be_queue_info *q)
166 return q->dma_mem.va + q->tail * q->entry_size;
169 static inline void *queue_index_node(struct be_queue_info *q, u16 index)
171 return q->dma_mem.va + index * q->entry_size;
174 static inline void queue_head_inc(struct be_queue_info *q)
176 index_inc(&q->head, q->len);
179 static inline void index_dec(u16 *index, u16 limit)
181 *index = MODULO((*index - 1), limit);
184 static inline void queue_tail_inc(struct be_queue_info *q)
186 index_inc(&q->tail, q->len);
190 struct be_queue_info q;
193 /* Adaptive interrupt coalescing (AIC) info */
195 u32 min_eqd; /* in usecs */
196 u32 max_eqd; /* in usecs */
197 u32 eqd; /* configured val when aic is off */
198 u32 cur_eqd; /* in usecs */
200 u8 idx; /* array index */
203 struct napi_struct napi;
204 struct be_adapter *adapter;
206 #ifdef CONFIG_NET_RX_BUSY_POLL
208 #define BE_EQ_NAPI 1 /* napi owns this EQ */
209 #define BE_EQ_POLL 2 /* poll owns this EQ */
210 #define BE_EQ_LOCKED (BE_EQ_NAPI | BE_EQ_POLL)
211 #define BE_EQ_NAPI_YIELD 4 /* napi yielded this EQ */
212 #define BE_EQ_POLL_YIELD 8 /* poll yielded this EQ */
213 #define BE_EQ_YIELD (BE_EQ_NAPI_YIELD | BE_EQ_POLL_YIELD)
214 #define BE_EQ_USER_PEND (BE_EQ_POLL | BE_EQ_POLL_YIELD)
216 spinlock_t lock; /* lock to serialize napi and busy-poll */
217 #endif /* CONFIG_NET_RX_BUSY_POLL */
218 } ____cacheline_aligned_in_smp;
220 struct be_aic_obj { /* Adaptive interrupt coalescing (AIC) info */
222 u32 min_eqd; /* in usecs */
223 u32 max_eqd; /* in usecs */
224 u32 prev_eqd; /* in usecs */
225 u32 et_eqd; /* configured val when aic is off */
227 u64 rx_pkts_prev; /* Used to calculate RX pps */
228 u64 tx_reqs_prev; /* Used to calculate TX pps */
237 struct be_queue_info q;
238 struct be_queue_info cq;
250 u32 tx_drv_drops; /* pkts dropped by driver */
251 /* the error counters are described in be_ethtool.c */
252 u32 tx_hdr_parse_err;
255 u32 tx_spoof_check_err;
257 u32 tx_internal_parity_err;
258 struct u64_stats_sync sync;
259 struct u64_stats_sync sync_compl;
264 struct be_queue_info q;
265 struct be_queue_info cq;
266 /* Remember the skbs that were transmitted */
267 struct sk_buff *sent_skb_list[TX_Q_LEN];
268 struct be_tx_stats stats;
269 } ____cacheline_aligned_in_smp;
271 /* Struct to remember the pages posted for rx frags */
272 struct be_rx_page_info {
274 /* set to page-addr for last frag of the page & frag-addr otherwise */
275 DEFINE_DMA_UNMAP_ADDR(bus);
277 bool last_frag; /* last frag of the page */
283 u32 rx_drops_no_skbs; /* skb allocation errors */
284 u32 rx_drops_no_frags; /* HW has no fetched frags */
285 u32 rx_post_fail; /* page post alloc failures */
288 u32 rx_compl_err; /* completions with err set */
289 struct u64_stats_sync sync;
292 struct be_rx_compl_info {
313 struct be_adapter *adapter;
314 struct be_queue_info q;
315 struct be_queue_info cq;
316 struct be_rx_compl_info rxcp;
317 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
318 struct be_rx_stats stats;
320 bool rx_post_starved; /* Zero rx frags have been posted to BE */
321 } ____cacheline_aligned_in_smp;
323 struct be_drv_stats {
324 u32 be_on_die_temperature;
327 u32 rx_drops_no_pbuf;
328 u32 rx_drops_no_txpb;
329 u32 rx_drops_no_erx_descr;
330 u32 rx_drops_no_tpre_descr;
331 u32 rx_drops_too_many_frags;
332 u32 forwarded_packets;
335 u32 rx_alignment_symbol_errors;
337 u32 rx_priority_pause_frames;
338 u32 rx_control_frames;
339 u32 rx_in_range_errors;
340 u32 rx_out_range_errors;
341 u32 rx_frame_too_long;
342 u32 rx_address_filtered;
343 u32 rx_dropped_too_small;
344 u32 rx_dropped_too_short;
345 u32 rx_dropped_header_too_small;
346 u32 rx_dropped_tcp_length;
348 u32 rx_ip_checksum_errs;
349 u32 rx_tcp_checksum_errs;
350 u32 rx_udp_checksum_errs;
352 u32 tx_priority_pauseframes;
353 u32 tx_controlframes;
354 u32 rxpp_fifo_overflow_drop;
355 u32 rx_input_fifo_overflow_drop;
356 u32 pmem_fifo_overflow_drop;
358 u32 rx_roce_bytes_lsd;
359 u32 rx_roce_bytes_msd;
361 u32 roce_drops_payload_len;
365 /* A vlan-id of 0xFFFF must be used to clear transparent vlan-tagging */
366 #define BE_RESET_VLAN_TAG_ID 0xFFFF
369 unsigned char mac_addr[ETH_ALEN];
382 #define BE_FLAGS_LINK_STATUS_INIT 1
383 #define BE_FLAGS_SRIOV_ENABLED (1 << 2)
384 #define BE_FLAGS_WORKER_SCHEDULED (1 << 3)
385 #define BE_FLAGS_VLAN_PROMISC (1 << 4)
386 #define BE_FLAGS_MCAST_PROMISC (1 << 5)
387 #define BE_FLAGS_NAPI_ENABLED (1 << 9)
388 #define BE_FLAGS_QNQ_ASYNC_EVT_RCVD (1 << 11)
389 #define BE_FLAGS_VXLAN_OFFLOADS (1 << 12)
390 #define BE_FLAGS_SETUP_DONE (1 << 13)
392 #define BE_UC_PMAC_COUNT 30
393 #define BE_VF_UC_PMAC_COUNT 2
395 /* Ethtool set_dump flags */
396 #define LANCER_INITIATE_FW_DUMP 0x1
397 #define LANCER_DELETE_FW_DUMP 0x2
407 u16 auto_speeds_supported;
408 u16 fixed_speeds_supported;
415 struct be_resources {
416 u16 max_vfs; /* Total VFs "really" supported by FW/HW */
421 u16 max_uc_mac; /* Max UC MACs programmable */
422 u16 max_vlans; /* Number of vlans supported */
425 u32 vf_if_cap_flags; /* VF if capability flags */
430 u8 rsstable[RSS_INDIR_TABLE_LEN];
431 u8 rss_queue[RSS_INDIR_TABLE_LEN];
432 u8 rss_hkey[RSS_HASH_KEY_LEN];
436 struct pci_dev *pdev;
437 struct net_device *netdev;
439 u8 __iomem *csr; /* CSR BAR used only for BE2/3 */
440 u8 __iomem *db; /* Door Bell */
442 struct mutex mbox_lock; /* For serializing mbox cmds to BE card */
443 struct be_dma_mem mbox_mem;
444 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
445 * is stored for freeing purpose */
446 struct be_dma_mem mbox_mem_alloced;
448 struct be_mcc_obj mcc_obj;
449 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
450 spinlock_t mcc_cq_lock;
452 u16 cfg_num_qs; /* configured via set-channels */
455 struct be_eq_obj eq_obj[MAX_EVT_QS];
456 struct msix_entry msix_entries[MAX_MSIX_VECTORS];
461 struct be_tx_obj tx_obj[MAX_TX_QS];
465 struct be_rx_obj rx_obj[MAX_RX_QS];
466 u32 big_page_size; /* Compounded page size shared by rx wrbs */
468 struct be_drv_stats drv_stats;
469 struct be_aic_obj aic_obj[MAX_EVT_QS];
471 unsigned long vids[BITS_TO_LONGS(VLAN_N_VID)];
472 u8 vlan_prio_bmap; /* Available Priority BitMap */
473 u16 recommended_prio; /* Recommended Priority */
474 struct be_dma_mem rx_filter; /* Cmd DMA mem for rx-filter */
476 struct be_dma_mem stats_cmd;
477 /* Work queue used to perform periodic tasks like getting statistics */
478 struct delayed_work work;
481 struct delayed_work func_recovery_work;
484 /* Ethtool knobs and info */
485 char fw_ver[FW_VER_LEN];
486 char fw_on_flash[FW_VER_LEN];
487 int if_handle; /* Used to configure filtering */
488 u32 *pmac_id; /* MAC addr handle used by BE card */
489 u32 beacon_state; /* for set_phys_id */
500 u32 rx_fc; /* Rx flow control */
501 u32 tx_fc; /* Tx flow control */
508 u32 num_msix_roce_vec;
509 struct ocrdma_dev *ocrdma_dev;
510 struct list_head entry;
513 struct completion et_cmd_compl;
515 struct be_resources pool_res; /* resources available for the port */
516 struct be_resources res; /* resources available for the func */
517 u16 num_vfs; /* Number of VFs provisioned by PF */
519 struct be_vf_cfg *vf_cfg;
528 u32 uc_macs; /* Count of secondary UC MAC programmed */
532 int be_get_temp_freq;
534 struct rss_info rss_info;
537 #define be_physfn(adapter) (!adapter->virtfn)
538 #define be_virtfn(adapter) (adapter->virtfn)
539 #define sriov_enabled(adapter) (adapter->flags & \
540 BE_FLAGS_SRIOV_ENABLED)
542 #define for_all_vfs(adapter, vf_cfg, i) \
543 for (i = 0, vf_cfg = &adapter->vf_cfg[i]; i < adapter->num_vfs; \
549 #define be_max_vlans(adapter) (adapter->res.max_vlans)
550 #define be_max_uc(adapter) (adapter->res.max_uc_mac)
551 #define be_max_mc(adapter) (adapter->res.max_mcast_mac)
552 #define be_max_vfs(adapter) (adapter->pool_res.max_vfs)
553 #define be_max_rss(adapter) (adapter->res.max_rss_qs)
554 #define be_max_txqs(adapter) (adapter->res.max_tx_qs)
555 #define be_max_prio_txqs(adapter) (adapter->res.max_prio_tx_qs)
556 #define be_max_rxqs(adapter) (adapter->res.max_rx_qs)
557 #define be_max_eqs(adapter) (adapter->res.max_evt_qs)
558 #define be_if_cap_flags(adapter) (adapter->res.if_cap_flags)
560 static inline u16 be_max_qs(struct be_adapter *adapter)
562 /* If no RSS, need atleast the one def RXQ */
563 u16 num = max_t(u16, be_max_rss(adapter), 1);
565 num = min(num, be_max_eqs(adapter));
566 return min_t(u16, num, num_online_cpus());
569 /* Is BE in pvid_tagging mode */
570 #define be_pvid_tagging_enabled(adapter) (adapter->pvid)
572 /* Is BE in QNQ multi-channel mode */
573 #define be_is_qnq_mode(adapter) (adapter->function_mode & QNQ_MODE)
575 #define lancer_chip(adapter) (adapter->pdev->device == OC_DEVICE_ID3 || \
576 adapter->pdev->device == OC_DEVICE_ID4)
578 #define skyhawk_chip(adapter) (adapter->pdev->device == OC_DEVICE_ID5 || \
579 adapter->pdev->device == OC_DEVICE_ID6)
581 #define BE3_chip(adapter) (adapter->pdev->device == BE_DEVICE_ID2 || \
582 adapter->pdev->device == OC_DEVICE_ID2)
584 #define BE2_chip(adapter) (adapter->pdev->device == BE_DEVICE_ID1 || \
585 adapter->pdev->device == OC_DEVICE_ID1)
587 #define BEx_chip(adapter) (BE3_chip(adapter) || BE2_chip(adapter))
589 #define be_roce_supported(adapter) (skyhawk_chip(adapter) && \
590 (adapter->function_mode & RDMA_ENABLED))
592 extern const struct ethtool_ops be_ethtool_ops;
594 #define msix_enabled(adapter) (adapter->num_msix_vec > 0)
595 #define num_irqs(adapter) (msix_enabled(adapter) ? \
596 adapter->num_msix_vec : 1)
597 #define tx_stats(txo) (&(txo)->stats)
598 #define rx_stats(rxo) (&(rxo)->stats)
600 /* The default RXQ is the last RXQ */
601 #define default_rxo(adpt) (&adpt->rx_obj[adpt->num_rx_qs - 1])
603 #define for_all_rx_queues(adapter, rxo, i) \
604 for (i = 0, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs; \
607 /* Skip the default non-rss queue (last one)*/
608 #define for_all_rss_queues(adapter, rxo, i) \
609 for (i = 0, rxo = &adapter->rx_obj[i]; i < (adapter->num_rx_qs - 1);\
612 #define for_all_tx_queues(adapter, txo, i) \
613 for (i = 0, txo = &adapter->tx_obj[i]; i < adapter->num_tx_qs; \
616 #define for_all_evt_queues(adapter, eqo, i) \
617 for (i = 0, eqo = &adapter->eq_obj[i]; i < adapter->num_evt_qs; \
620 #define for_all_rx_queues_on_eq(adapter, eqo, rxo, i) \
621 for (i = eqo->idx, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs;\
622 i += adapter->num_evt_qs, rxo += adapter->num_evt_qs)
624 #define for_all_tx_queues_on_eq(adapter, eqo, txo, i) \
625 for (i = eqo->idx, txo = &adapter->tx_obj[i]; i < adapter->num_tx_qs;\
626 i += adapter->num_evt_qs, txo += adapter->num_evt_qs)
628 #define is_mcc_eqo(eqo) (eqo->idx == 0)
629 #define mcc_eqo(adapter) (&adapter->eq_obj[0])
631 #define PAGE_SHIFT_4K 12
632 #define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
634 /* Returns number of pages spanned by the data starting at the given addr */
635 #define PAGES_4K_SPANNED(_address, size) \
636 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
637 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
639 /* Returns bit offset within a DWORD of a bitfield */
640 #define AMAP_BIT_OFFSET(_struct, field) \
641 (((size_t)&(((_struct *)0)->field))%32)
643 /* Returns the bit mask of the field that is NOT shifted into location. */
644 static inline u32 amap_mask(u32 bitsize)
646 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
650 amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
652 u32 *dw = (u32 *) ptr + dw_offset;
653 *dw &= ~(mask << offset);
654 *dw |= (mask & value) << offset;
657 #define AMAP_SET_BITS(_struct, field, ptr, val) \
659 offsetof(_struct, field)/32, \
660 amap_mask(sizeof(((_struct *)0)->field)), \
661 AMAP_BIT_OFFSET(_struct, field), \
664 static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
666 u32 *dw = (u32 *) ptr;
667 return mask & (*(dw + dw_offset) >> offset);
670 #define AMAP_GET_BITS(_struct, field, ptr) \
672 offsetof(_struct, field)/32, \
673 amap_mask(sizeof(((_struct *)0)->field)), \
674 AMAP_BIT_OFFSET(_struct, field))
676 #define GET_RX_COMPL_V0_BITS(field, ptr) \
677 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, field, ptr)
679 #define GET_RX_COMPL_V1_BITS(field, ptr) \
680 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, field, ptr)
682 #define GET_TX_COMPL_BITS(field, ptr) \
683 AMAP_GET_BITS(struct amap_eth_tx_compl, field, ptr)
685 #define SET_TX_WRB_HDR_BITS(field, ptr, val) \
686 AMAP_SET_BITS(struct amap_eth_hdr_wrb, field, ptr, val)
688 #define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
689 #define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
690 static inline void swap_dws(void *wrb, int len)
696 *dw = cpu_to_le32(*dw);
700 #endif /* __BIG_ENDIAN */
703 #define be_cmd_status(status) (status > 0 ? -EIO : status)
705 static inline u8 is_tcp_pkt(struct sk_buff *skb)
709 if (ip_hdr(skb)->version == 4)
710 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
711 else if (ip_hdr(skb)->version == 6)
712 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
717 static inline u8 is_udp_pkt(struct sk_buff *skb)
721 if (ip_hdr(skb)->version == 4)
722 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
723 else if (ip_hdr(skb)->version == 6)
724 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
729 static inline bool is_ipv4_pkt(struct sk_buff *skb)
731 return skb->protocol == htons(ETH_P_IP) && ip_hdr(skb)->version == 4;
734 static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
738 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
740 mac[5] = (u8)(addr & 0xFF);
741 mac[4] = (u8)((addr >> 8) & 0xFF);
742 mac[3] = (u8)((addr >> 16) & 0xFF);
743 /* Use the OUI from the current MAC address */
744 memcpy(mac, adapter->netdev->dev_addr, 3);
747 static inline bool be_multi_rxq(const struct be_adapter *adapter)
749 return adapter->num_rx_qs > 1;
752 static inline bool be_error(struct be_adapter *adapter)
754 return adapter->eeh_error || adapter->hw_error || adapter->fw_timeout;
757 static inline bool be_hw_error(struct be_adapter *adapter)
759 return adapter->eeh_error || adapter->hw_error;
762 static inline void be_clear_all_error(struct be_adapter *adapter)
764 adapter->eeh_error = false;
765 adapter->hw_error = false;
766 adapter->fw_timeout = false;
769 static inline bool be_is_wol_excluded(struct be_adapter *adapter)
771 struct pci_dev *pdev = adapter->pdev;
773 if (!be_physfn(adapter))
776 switch (pdev->subsystem_device) {
777 case OC_SUBSYS_DEVICE_ID1:
778 case OC_SUBSYS_DEVICE_ID2:
779 case OC_SUBSYS_DEVICE_ID3:
780 case OC_SUBSYS_DEVICE_ID4:
787 static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
789 return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
792 #ifdef CONFIG_NET_RX_BUSY_POLL
793 static inline bool be_lock_napi(struct be_eq_obj *eqo)
797 spin_lock(&eqo->lock); /* BH is already disabled */
798 if (eqo->state & BE_EQ_LOCKED) {
799 WARN_ON(eqo->state & BE_EQ_NAPI);
800 eqo->state |= BE_EQ_NAPI_YIELD;
803 eqo->state = BE_EQ_NAPI;
805 spin_unlock(&eqo->lock);
809 static inline void be_unlock_napi(struct be_eq_obj *eqo)
811 spin_lock(&eqo->lock); /* BH is already disabled */
813 WARN_ON(eqo->state & (BE_EQ_POLL | BE_EQ_NAPI_YIELD));
814 eqo->state = BE_EQ_IDLE;
816 spin_unlock(&eqo->lock);
819 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
823 spin_lock_bh(&eqo->lock);
824 if (eqo->state & BE_EQ_LOCKED) {
825 eqo->state |= BE_EQ_POLL_YIELD;
828 eqo->state |= BE_EQ_POLL;
830 spin_unlock_bh(&eqo->lock);
834 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
836 spin_lock_bh(&eqo->lock);
838 WARN_ON(eqo->state & (BE_EQ_NAPI));
839 eqo->state = BE_EQ_IDLE;
841 spin_unlock_bh(&eqo->lock);
844 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
846 spin_lock_init(&eqo->lock);
847 eqo->state = BE_EQ_IDLE;
850 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
854 /* It's enough to just acquire napi lock on the eqo to stop
855 * be_busy_poll() from processing any queueus.
857 while (!be_lock_napi(eqo))
863 #else /* CONFIG_NET_RX_BUSY_POLL */
865 static inline bool be_lock_napi(struct be_eq_obj *eqo)
870 static inline void be_unlock_napi(struct be_eq_obj *eqo)
874 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
879 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
883 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
887 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
890 #endif /* CONFIG_NET_RX_BUSY_POLL */
892 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
894 void be_link_status_update(struct be_adapter *adapter, u8 link_status);
895 void be_parse_stats(struct be_adapter *adapter);
896 int be_load_fw(struct be_adapter *adapter, u8 *func);
897 bool be_is_wol_supported(struct be_adapter *adapter);
898 bool be_pause_supported(struct be_adapter *adapter);
899 u32 be_get_fw_log_level(struct be_adapter *adapter);
901 static inline int fw_major_num(const char *fw_ver)
905 sscanf(fw_ver, "%d.", &fw_major);
910 int be_update_queues(struct be_adapter *adapter);
911 int be_poll(struct napi_struct *napi, int budget);
914 * internal function to initialize-cleanup roce device.
916 void be_roce_dev_add(struct be_adapter *);
917 void be_roce_dev_remove(struct be_adapter *);
920 * internal function to open-close roce device during ifup-ifdown.
922 void be_roce_dev_open(struct be_adapter *);
923 void be_roce_dev_close(struct be_adapter *);
924 void be_roce_dev_shutdown(struct be_adapter *);