2 * Copyright (C) 2005 - 2009 ServerEngines
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@serverengines.com
14 * 209 N. Fair Oaks Ave
21 #include <linux/pci.h>
22 #include <linux/etherdevice.h>
23 #include <linux/version.h>
24 #include <linux/delay.h>
28 #include <linux/if_vlan.h>
29 #include <linux/workqueue.h>
30 #include <linux/interrupt.h>
34 #define DRV_VER "2.0.400"
35 #define DRV_NAME "be2net"
36 #define BE_NAME "ServerEngines BladeEngine2 10Gbps NIC"
37 #define OC_NAME "Emulex OneConnect 10Gbps NIC"
38 #define DRV_DESC BE_NAME "Driver"
40 #define BE_VENDOR_ID 0x19a2
41 #define BE_DEVICE_ID1 0x211
42 #define OC_DEVICE_ID1 0x700
43 #define OC_DEVICE_ID2 0x701
45 static inline char *nic_name(struct pci_dev
*pdev
)
47 if (pdev
->device
== OC_DEVICE_ID1
|| pdev
->device
== OC_DEVICE_ID2
)
53 /* Number of bytes of an RX frame that are copied to skb->data */
55 #define BE_MAX_JUMBO_FRAME_SIZE 9018
56 #define BE_MIN_MTU 256
58 #define BE_NUM_VLANS_SUPPORTED 64
60 #define BE_MAX_TX_FRAG_COUNT 30
62 #define EVNT_Q_LEN 1024
64 #define TX_CQ_LEN 1024
65 #define RX_Q_LEN 1024 /* Does not support any other value */
66 #define RX_CQ_LEN 1024
67 #define MCC_Q_LEN 128 /* total size not to exceed 8 pages */
68 #define MCC_CQ_LEN 256
70 #define BE_NAPI_WEIGHT 64
71 #define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
72 #define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
82 struct be_queue_info
{
83 struct be_dma_mem dma_mem
;
85 u16 entry_size
; /* Size of an element in the queue */
89 atomic_t used
; /* Number of valid elements in the queue */
92 static inline u32
MODULO(u16 val
, u16 limit
)
94 BUG_ON(limit
& (limit
- 1));
95 return val
& (limit
- 1);
98 static inline void index_adv(u16
*index
, u16 val
, u16 limit
)
100 *index
= MODULO((*index
+ val
), limit
);
103 static inline void index_inc(u16
*index
, u16 limit
)
105 *index
= MODULO((*index
+ 1), limit
);
108 static inline void *queue_head_node(struct be_queue_info
*q
)
110 return q
->dma_mem
.va
+ q
->head
* q
->entry_size
;
113 static inline void *queue_tail_node(struct be_queue_info
*q
)
115 return q
->dma_mem
.va
+ q
->tail
* q
->entry_size
;
118 static inline void queue_head_inc(struct be_queue_info
*q
)
120 index_inc(&q
->head
, q
->len
);
123 static inline void queue_tail_inc(struct be_queue_info
*q
)
125 index_inc(&q
->tail
, q
->len
);
129 struct be_queue_info q
;
132 /* Adaptive interrupt coalescing (AIC) info */
134 u16 min_eqd
; /* in usecs */
135 u16 max_eqd
; /* in usecs */
136 u16 cur_eqd
; /* in usecs */
138 struct napi_struct napi
;
142 struct be_queue_info q
;
143 struct be_queue_info cq
;
146 struct be_drvr_stats
{
147 u32 be_tx_reqs
; /* number of TX requests initiated */
148 u32 be_tx_stops
; /* number of times TX Q was stopped */
149 u32 be_fwd_reqs
; /* number of send reqs through forwarding i/f */
150 u32 be_tx_wrbs
; /* number of tx WRBs used */
151 u32 be_tx_events
; /* number of tx completion events */
152 u32 be_tx_compl
; /* number of tx completion entries processed */
155 u64 be_tx_bytes_prev
;
158 u32 cache_barrier
[16];
160 u32 be_ethrx_post_fail
;/* number of ethrx buffer alloc failures */
161 u32 be_polls
; /* number of times NAPI called poll function */
162 u32 be_rx_events
; /* number of ucast rx completion events */
163 u32 be_rx_compl
; /* number of rx completion entries processed */
166 u64 be_rx_bytes_prev
;
168 /* number of non ether type II frames dropped where
169 * frame len > length field of Mac Hdr */
170 u32 be_802_3_dropped_frames
;
171 /* number of non ether type II frames malformed where
172 * in frame len < length field of Mac Hdr */
173 u32 be_802_3_malformed_frames
;
174 u32 be_rxcp_err
; /* Num rx completion entries w/ err set. */
175 ulong rx_fps_jiffies
; /* jiffies at last FPS calc */
177 u32 be_prev_rx_frags
;
178 u32 be_rx_fps
; /* Rx frags per second */
181 struct be_stats_obj
{
182 struct be_drvr_stats drvr_stats
;
183 struct net_device_stats net_stats
;
184 struct be_dma_mem cmd
;
188 struct be_queue_info q
;
189 struct be_queue_info cq
;
190 /* Remember the skbs that were transmitted */
191 struct sk_buff
*sent_skb_list
[TX_Q_LEN
];
194 /* Struct to remember the pages posted for rx frags */
195 struct be_rx_page_info
{
203 struct be_queue_info q
;
204 struct be_queue_info cq
;
205 struct be_rx_page_info page_info_tbl
[RX_Q_LEN
];
208 #define BE_NUM_MSIX_VECTORS 2 /* 1 each for Tx and Rx */
210 struct pci_dev
*pdev
;
211 struct net_device
*netdev
;
214 u8 __iomem
*db
; /* Door Bell */
215 u8 __iomem
*pcicfg
; /* PCI config space */
217 spinlock_t mbox_lock
; /* For serializing mbox cmds to BE card */
218 struct be_dma_mem mbox_mem
;
219 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
220 * is stored for freeing purpose */
221 struct be_dma_mem mbox_mem_alloced
;
223 struct be_mcc_obj mcc_obj
;
224 spinlock_t mcc_lock
; /* For serializing mcc cmds to BE card */
225 spinlock_t mcc_cq_lock
;
227 struct msix_entry msix_entries
[BE_NUM_MSIX_VECTORS
];
232 struct be_eq_obj tx_eq
;
233 struct be_tx_obj tx_obj
;
235 u32 cache_line_break
[8];
238 struct be_eq_obj rx_eq
;
239 struct be_rx_obj rx_obj
;
240 u32 big_page_size
; /* Compounded page size shared by rx wrbs */
241 bool rx_post_starved
; /* Zero rx frags have been posted to BE */
243 struct vlan_group
*vlan_grp
;
245 u8 vlan_tag
[VLAN_GROUP_ARRAY_LEN
];
247 struct be_stats_obj stats
;
248 /* Work queue used to perform periodic tasks like getting statistics */
249 struct delayed_work work
;
251 /* Ethtool knobs and info */
252 bool rx_csum
; /* BE card must perform rx-checksumming */
253 char fw_ver
[FW_VER_LEN
];
254 u32 if_handle
; /* Used to configure filtering */
255 u32 pmac_id
; /* MAC addr handle used by BE card */
262 extern const struct ethtool_ops be_ethtool_ops
;
264 #define drvr_stats(adapter) (&adapter->stats.drvr_stats)
266 static inline unsigned int be_pci_func(struct be_adapter
*adapter
)
268 return PCI_FUNC(adapter
->pdev
->devfn
);
271 #define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
273 #define PAGE_SHIFT_4K 12
274 #define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
276 /* Returns number of pages spanned by the data starting at the given addr */
277 #define PAGES_4K_SPANNED(_address, size) \
278 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
279 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
281 /* Byte offset into the page corresponding to given address */
282 #define OFFSET_IN_PAGE(addr) \
283 ((size_t)(addr) & (PAGE_SIZE_4K-1))
285 /* Returns bit offset within a DWORD of a bitfield */
286 #define AMAP_BIT_OFFSET(_struct, field) \
287 (((size_t)&(((_struct *)0)->field))%32)
289 /* Returns the bit mask of the field that is NOT shifted into location. */
290 static inline u32
amap_mask(u32 bitsize
)
292 return (bitsize
== 32 ? 0xFFFFFFFF : (1 << bitsize
) - 1);
296 amap_set(void *ptr
, u32 dw_offset
, u32 mask
, u32 offset
, u32 value
)
298 u32
*dw
= (u32
*) ptr
+ dw_offset
;
299 *dw
&= ~(mask
<< offset
);
300 *dw
|= (mask
& value
) << offset
;
303 #define AMAP_SET_BITS(_struct, field, ptr, val) \
305 offsetof(_struct, field)/32, \
306 amap_mask(sizeof(((_struct *)0)->field)), \
307 AMAP_BIT_OFFSET(_struct, field), \
310 static inline u32
amap_get(void *ptr
, u32 dw_offset
, u32 mask
, u32 offset
)
312 u32
*dw
= (u32
*) ptr
;
313 return mask
& (*(dw
+ dw_offset
) >> offset
);
316 #define AMAP_GET_BITS(_struct, field, ptr) \
318 offsetof(_struct, field)/32, \
319 amap_mask(sizeof(((_struct *)0)->field)), \
320 AMAP_BIT_OFFSET(_struct, field))
322 #define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
323 #define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
324 static inline void swap_dws(void *wrb
, int len
)
330 *dw
= cpu_to_le32(*dw
);
334 #endif /* __BIG_ENDIAN */
337 static inline u8
is_tcp_pkt(struct sk_buff
*skb
)
341 if (ip_hdr(skb
)->version
== 4)
342 val
= (ip_hdr(skb
)->protocol
== IPPROTO_TCP
);
343 else if (ip_hdr(skb
)->version
== 6)
344 val
= (ipv6_hdr(skb
)->nexthdr
== NEXTHDR_TCP
);
349 static inline u8
is_udp_pkt(struct sk_buff
*skb
)
353 if (ip_hdr(skb
)->version
== 4)
354 val
= (ip_hdr(skb
)->protocol
== IPPROTO_UDP
);
355 else if (ip_hdr(skb
)->version
== 6)
356 val
= (ipv6_hdr(skb
)->nexthdr
== NEXTHDR_UDP
);
361 extern void be_cq_notify(struct be_adapter
*adapter
, u16 qid
, bool arm
,
363 extern void be_link_status_update(struct be_adapter
*adapter
, bool link_up
);