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1/*
2 * Copyright (C) 2005 - 2011 Emulex
3 * All rights reserved.
4 *
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.
9 *
10 * Contact Information:
11 * linux-drivers@emulex.com
12 *
13 * Emulex
14 * 3333 Susan Street
15 * Costa Mesa, CA 92626
16 */
17
18#ifndef BE_H
19#define BE_H
20
21#include <linux/pci.h>
22#include <linux/etherdevice.h>
23#include <linux/delay.h>
24#include <net/tcp.h>
25#include <net/ip.h>
26#include <net/ipv6.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
33#include "be_hw.h"
34
35#define DRV_VER "4.0.100u"
36#define DRV_NAME "be2net"
37#define BE_NAME "ServerEngines BladeEngine2 10Gbps NIC"
38#define BE3_NAME "ServerEngines BladeEngine3 10Gbps NIC"
39#define OC_NAME "Emulex OneConnect 10Gbps NIC"
40#define OC_NAME_BE OC_NAME "(be3)"
41#define OC_NAME_LANCER OC_NAME "(Lancer)"
42#define DRV_DESC "ServerEngines BladeEngine 10Gbps NIC Driver"
43
44#define BE_VENDOR_ID 0x19a2
45#define EMULEX_VENDOR_ID 0x10df
46#define BE_DEVICE_ID1 0x211
47#define BE_DEVICE_ID2 0x221
48#define OC_DEVICE_ID1 0x700 /* Device Id for BE2 cards */
49#define OC_DEVICE_ID2 0x710 /* Device Id for BE3 cards */
50#define OC_DEVICE_ID3 0xe220 /* Device id for Lancer cards */
51#define OC_DEVICE_ID4 0xe228 /* Device id for VF in Lancer */
52
53static inline char *nic_name(struct pci_dev *pdev)
54{
55 switch (pdev->device) {
56 case OC_DEVICE_ID1:
57 return OC_NAME;
58 case OC_DEVICE_ID2:
59 return OC_NAME_BE;
60 case OC_DEVICE_ID3:
61 case OC_DEVICE_ID4:
62 return OC_NAME_LANCER;
63 case BE_DEVICE_ID2:
64 return BE3_NAME;
65 default:
66 return BE_NAME;
67 }
68}
69
70/* Number of bytes of an RX frame that are copied to skb->data */
71#define BE_HDR_LEN ((u16) 64)
72#define BE_MAX_JUMBO_FRAME_SIZE 9018
73#define BE_MIN_MTU 256
74
75#define BE_NUM_VLANS_SUPPORTED 64
76#define BE_MAX_EQD 96
77#define BE_MAX_TX_FRAG_COUNT 30
78
79#define EVNT_Q_LEN 1024
80#define TX_Q_LEN 2048
81#define TX_CQ_LEN 1024
82#define RX_Q_LEN 1024 /* Does not support any other value */
83#define RX_CQ_LEN 1024
84#define MCC_Q_LEN 128 /* total size not to exceed 8 pages */
85#define MCC_CQ_LEN 256
86
87#define MAX_RSS_QS 4 /* BE limit is 4 queues/port */
88#define MAX_RX_QS (MAX_RSS_QS + 1) /* RSS qs + 1 def Rx */
89#define MAX_TX_QS 8
90#define BE_MAX_MSIX_VECTORS (MAX_RX_QS + 1)/* RX + TX */
91#define BE_NAPI_WEIGHT 64
92#define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
93#define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
94
95#define FW_VER_LEN 32
96
97struct be_dma_mem {
98 void *va;
99 dma_addr_t dma;
100 u32 size;
101};
102
103struct be_queue_info {
104 struct be_dma_mem dma_mem;
105 u16 len;
106 u16 entry_size; /* Size of an element in the queue */
107 u16 id;
108 u16 tail, head;
109 bool created;
110 atomic_t used; /* Number of valid elements in the queue */
111};
112
113static inline u32 MODULO(u16 val, u16 limit)
114{
115 BUG_ON(limit & (limit - 1));
116 return val & (limit - 1);
117}
118
119static inline void index_adv(u16 *index, u16 val, u16 limit)
120{
121 *index = MODULO((*index + val), limit);
122}
123
124static inline void index_inc(u16 *index, u16 limit)
125{
126 *index = MODULO((*index + 1), limit);
127}
128
129static inline void *queue_head_node(struct be_queue_info *q)
130{
131 return q->dma_mem.va + q->head * q->entry_size;
132}
133
134static inline void *queue_tail_node(struct be_queue_info *q)
135{
136 return q->dma_mem.va + q->tail * q->entry_size;
137}
138
139static inline void queue_head_inc(struct be_queue_info *q)
140{
141 index_inc(&q->head, q->len);
142}
143
144static inline void queue_tail_inc(struct be_queue_info *q)
145{
146 index_inc(&q->tail, q->len);
147}
148
149struct be_eq_obj {
150 struct be_queue_info q;
151 char desc[32];
152
153 /* Adaptive interrupt coalescing (AIC) info */
154 bool enable_aic;
155 u16 min_eqd; /* in usecs */
156 u16 max_eqd; /* in usecs */
157 u16 cur_eqd; /* in usecs */
158 u8 eq_idx;
159
160 struct napi_struct napi;
161};
162
163struct be_mcc_obj {
164 struct be_queue_info q;
165 struct be_queue_info cq;
166 bool rearm_cq;
167};
168
169struct be_tx_stats {
170 u32 be_tx_reqs; /* number of TX requests initiated */
171 u32 be_tx_stops; /* number of times TX Q was stopped */
172 u32 be_tx_wrbs; /* number of tx WRBs used */
173 u32 be_tx_compl; /* number of tx completion entries processed */
174 ulong be_tx_jiffies;
175 u64 be_tx_bytes;
176 u64 be_tx_bytes_prev;
177 u64 be_tx_pkts;
178 u32 be_tx_rate;
179};
180
181struct be_tx_obj {
182 struct be_queue_info q;
183 struct be_queue_info cq;
184 /* Remember the skbs that were transmitted */
185 struct sk_buff *sent_skb_list[TX_Q_LEN];
186 struct be_tx_stats stats;
187};
188
189/* Struct to remember the pages posted for rx frags */
190struct be_rx_page_info {
191 struct page *page;
192 DEFINE_DMA_UNMAP_ADDR(bus);
193 u16 page_offset;
194 bool last_page_user;
195};
196
197struct be_rx_stats {
198 u32 rx_post_fail;/* number of ethrx buffer alloc failures */
199 u32 rx_polls; /* number of times NAPI called poll function */
200 u32 rx_events; /* number of ucast rx completion events */
201 u32 rx_compl; /* number of rx completion entries processed */
202 ulong rx_dropped; /* number of skb allocation errors */
203 ulong rx_jiffies;
204 u64 rx_bytes;
205 u64 rx_bytes_prev;
206 u64 rx_pkts;
207 u32 rx_rate;
208 u32 rx_mcast_pkts;
209 u32 rxcp_err; /* Num rx completion entries w/ err set. */
210 ulong rx_fps_jiffies; /* jiffies at last FPS calc */
211 u32 rx_frags;
212 u32 prev_rx_frags;
213 u32 rx_fps; /* Rx frags per second */
214};
215
216struct be_rx_compl_info {
217 u32 rss_hash;
218 u16 vlan_tag;
219 u16 pkt_size;
220 u16 rxq_idx;
221 u16 mac_id;
222 u8 vlanf;
223 u8 num_rcvd;
224 u8 err;
225 u8 ipf;
226 u8 tcpf;
227 u8 udpf;
228 u8 ip_csum;
229 u8 l4_csum;
230 u8 ipv6;
231 u8 vtm;
232 u8 pkt_type;
233};
234
235struct be_rx_obj {
236 struct be_adapter *adapter;
237 struct be_queue_info q;
238 struct be_queue_info cq;
239 struct be_rx_compl_info rxcp;
240 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
241 struct be_eq_obj rx_eq;
242 struct be_rx_stats stats;
243 u8 rss_id;
244 bool rx_post_starved; /* Zero rx frags have been posted to BE */
245 u32 cache_line_barrier[16];
246};
247
248struct be_drv_stats {
249 u8 be_on_die_temperature;
250 u64 be_tx_events;
251 u64 eth_red_drops;
252 u64 rx_drops_no_pbuf;
253 u64 rx_drops_no_txpb;
254 u64 rx_drops_no_erx_descr;
255 u64 rx_drops_no_tpre_descr;
256 u64 rx_drops_too_many_frags;
257 u64 rx_drops_invalid_ring;
258 u64 forwarded_packets;
259 u64 rx_drops_mtu;
260 u64 rx_crc_errors;
261 u64 rx_alignment_symbol_errors;
262 u64 rx_pause_frames;
263 u64 rx_priority_pause_frames;
264 u64 rx_control_frames;
265 u64 rx_in_range_errors;
266 u64 rx_out_range_errors;
267 u64 rx_frame_too_long;
268 u64 rx_address_match_errors;
269 u64 rx_dropped_too_small;
270 u64 rx_dropped_too_short;
271 u64 rx_dropped_header_too_small;
272 u64 rx_dropped_tcp_length;
273 u64 rx_dropped_runt;
274 u64 rx_ip_checksum_errs;
275 u64 rx_tcp_checksum_errs;
276 u64 rx_udp_checksum_errs;
277 u64 rx_switched_unicast_packets;
278 u64 rx_switched_multicast_packets;
279 u64 rx_switched_broadcast_packets;
280 u64 tx_pauseframes;
281 u64 tx_priority_pauseframes;
282 u64 tx_controlframes;
283 u64 rxpp_fifo_overflow_drop;
284 u64 rx_input_fifo_overflow_drop;
285 u64 pmem_fifo_overflow_drop;
286 u64 jabber_events;
287};
288
289struct be_vf_cfg {
290 unsigned char vf_mac_addr[ETH_ALEN];
291 u32 vf_if_handle;
292 u32 vf_pmac_id;
293 u16 vf_vlan_tag;
294 u32 vf_tx_rate;
295};
296
297#define BE_INVALID_PMAC_ID 0xffffffff
298
299struct be_adapter {
300 struct pci_dev *pdev;
301 struct net_device *netdev;
302
303 u8 __iomem *csr;
304 u8 __iomem *db; /* Door Bell */
305 u8 __iomem *pcicfg; /* PCI config space */
306
307 struct mutex mbox_lock; /* For serializing mbox cmds to BE card */
308 struct be_dma_mem mbox_mem;
309 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
310 * is stored for freeing purpose */
311 struct be_dma_mem mbox_mem_alloced;
312
313 struct be_mcc_obj mcc_obj;
314 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
315 spinlock_t mcc_cq_lock;
316
317 struct msix_entry msix_entries[BE_MAX_MSIX_VECTORS];
318 u32 num_msix_vec;
319 bool isr_registered;
320
321 /* TX Rings */
322 struct be_eq_obj tx_eq;
323 struct be_tx_obj tx_obj[MAX_TX_QS];
324 u8 num_tx_qs;
325
326 u32 cache_line_break[8];
327
328 /* Rx rings */
329 struct be_rx_obj rx_obj[MAX_RX_QS];
330 u32 num_rx_qs;
331 u32 big_page_size; /* Compounded page size shared by rx wrbs */
332
333 u8 eq_next_idx;
334 struct be_drv_stats drv_stats;
335
336 u16 vlans_added;
337 u16 max_vlans; /* Number of vlans supported */
338 u8 vlan_tag[VLAN_N_VID];
339 u8 vlan_prio_bmap; /* Available Priority BitMap */
340 u16 recommended_prio; /* Recommended Priority */
341 struct be_dma_mem mc_cmd_mem;
342
343 struct be_dma_mem stats_cmd;
344 /* Work queue used to perform periodic tasks like getting statistics */
345 struct delayed_work work;
346 u16 work_counter;
347
348 /* Ethtool knobs and info */
349 char fw_ver[FW_VER_LEN];
350 u32 if_handle; /* Used to configure filtering */
351 u32 pmac_id; /* MAC addr handle used by BE card */
352 u32 beacon_state; /* for set_phys_id */
353
354 bool eeh_err;
355 bool link_up;
356 u32 port_num;
357 bool promiscuous;
358 bool wol;
359 u32 function_mode;
360 u32 function_caps;
361 u32 rx_fc; /* Rx flow control */
362 u32 tx_fc; /* Tx flow control */
363 bool ue_detected;
364 bool stats_cmd_sent;
365 int link_speed;
366 u8 port_type;
367 u8 transceiver;
368 u8 autoneg;
369 u8 generation; /* BladeEngine ASIC generation */
370 u32 flash_status;
371 struct completion flash_compl;
372
373 bool be3_native;
374 bool sriov_enabled;
375 struct be_vf_cfg *vf_cfg;
376 u8 is_virtfn;
377 u32 sli_family;
378 u8 hba_port_num;
379 u16 pvid;
380};
381
382#define be_physfn(adapter) (!adapter->is_virtfn)
383
384/* BladeEngine Generation numbers */
385#define BE_GEN2 2
386#define BE_GEN3 3
387
388#define lancer_chip(adapter) ((adapter->pdev->device == OC_DEVICE_ID3) || \
389 (adapter->pdev->device == OC_DEVICE_ID4))
390
391extern const struct ethtool_ops be_ethtool_ops;
392
393#define msix_enabled(adapter) (adapter->num_msix_vec > 0)
394#define tx_stats(txo) (&txo->stats)
395#define rx_stats(rxo) (&rxo->stats)
396
397#define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
398
399#define for_all_rx_queues(adapter, rxo, i) \
400 for (i = 0, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs; \
401 i++, rxo++)
402
403/* Just skip the first default non-rss queue */
404#define for_all_rss_queues(adapter, rxo, i) \
405 for (i = 0, rxo = &adapter->rx_obj[i+1]; i < (adapter->num_rx_qs - 1);\
406 i++, rxo++)
407
408#define for_all_tx_queues(adapter, txo, i) \
409 for (i = 0, txo = &adapter->tx_obj[i]; i < adapter->num_tx_qs; \
410 i++, txo++)
411
412#define PAGE_SHIFT_4K 12
413#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
414
415/* Returns number of pages spanned by the data starting at the given addr */
416#define PAGES_4K_SPANNED(_address, size) \
417 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
418 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
419
420/* Byte offset into the page corresponding to given address */
421#define OFFSET_IN_PAGE(addr) \
422 ((size_t)(addr) & (PAGE_SIZE_4K-1))
423
424/* Returns bit offset within a DWORD of a bitfield */
425#define AMAP_BIT_OFFSET(_struct, field) \
426 (((size_t)&(((_struct *)0)->field))%32)
427
428/* Returns the bit mask of the field that is NOT shifted into location. */
429static inline u32 amap_mask(u32 bitsize)
430{
431 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
432}
433
434static inline void
435amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
436{
437 u32 *dw = (u32 *) ptr + dw_offset;
438 *dw &= ~(mask << offset);
439 *dw |= (mask & value) << offset;
440}
441
442#define AMAP_SET_BITS(_struct, field, ptr, val) \
443 amap_set(ptr, \
444 offsetof(_struct, field)/32, \
445 amap_mask(sizeof(((_struct *)0)->field)), \
446 AMAP_BIT_OFFSET(_struct, field), \
447 val)
448
449static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
450{
451 u32 *dw = (u32 *) ptr;
452 return mask & (*(dw + dw_offset) >> offset);
453}
454
455#define AMAP_GET_BITS(_struct, field, ptr) \
456 amap_get(ptr, \
457 offsetof(_struct, field)/32, \
458 amap_mask(sizeof(((_struct *)0)->field)), \
459 AMAP_BIT_OFFSET(_struct, field))
460
461#define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
462#define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
463static inline void swap_dws(void *wrb, int len)
464{
465#ifdef __BIG_ENDIAN
466 u32 *dw = wrb;
467 BUG_ON(len % 4);
468 do {
469 *dw = cpu_to_le32(*dw);
470 dw++;
471 len -= 4;
472 } while (len);
473#endif /* __BIG_ENDIAN */
474}
475
476static inline u8 is_tcp_pkt(struct sk_buff *skb)
477{
478 u8 val = 0;
479
480 if (ip_hdr(skb)->version == 4)
481 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
482 else if (ip_hdr(skb)->version == 6)
483 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
484
485 return val;
486}
487
488static inline u8 is_udp_pkt(struct sk_buff *skb)
489{
490 u8 val = 0;
491
492 if (ip_hdr(skb)->version == 4)
493 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
494 else if (ip_hdr(skb)->version == 6)
495 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
496
497 return val;
498}
499
500static inline void be_check_sriov_fn_type(struct be_adapter *adapter)
501{
502 u32 sli_intf;
503
504 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
505 adapter->is_virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
506}
507
508static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
509{
510 u32 addr;
511
512 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
513
514 mac[5] = (u8)(addr & 0xFF);
515 mac[4] = (u8)((addr >> 8) & 0xFF);
516 mac[3] = (u8)((addr >> 16) & 0xFF);
517 /* Use the OUI from the current MAC address */
518 memcpy(mac, adapter->netdev->dev_addr, 3);
519}
520
521static inline bool be_multi_rxq(const struct be_adapter *adapter)
522{
523 return adapter->num_rx_qs > 1;
524}
525
526extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
527 u16 num_popped);
528extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
529extern void netdev_stats_update(struct be_adapter *adapter);
530extern void be_parse_stats(struct be_adapter *adapter);
531extern int be_load_fw(struct be_adapter *adapter, u8 *func);
532#endif /* BE_H */