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>
31 #include <linux/firmware.h>
35 #define DRV_VER "2.101.205"
36 #define DRV_NAME "be2net"
37 #define BE_NAME "ServerEngines BladeEngine2 10Gbps NIC"
38 #define OC_NAME "Emulex OneConnect 10Gbps NIC"
39 #define DRV_DESC BE_NAME "Driver"
41 #define BE_VENDOR_ID 0x19a2
42 #define BE_DEVICE_ID1 0x211
43 #define OC_DEVICE_ID1 0x700
44 #define OC_DEVICE_ID2 0x701
46 static inline char *nic_name(struct pci_dev *pdev)
48 if (pdev->device == OC_DEVICE_ID1 || pdev->device == OC_DEVICE_ID2)
54 /* Number of bytes of an RX frame that are copied to skb->data */
56 #define BE_MAX_JUMBO_FRAME_SIZE 9018
57 #define BE_MIN_MTU 256
59 #define BE_NUM_VLANS_SUPPORTED 64
61 #define BE_MAX_TX_FRAG_COUNT 30
63 #define EVNT_Q_LEN 1024
65 #define TX_CQ_LEN 1024
66 #define RX_Q_LEN 1024 /* Does not support any other value */
67 #define RX_CQ_LEN 1024
68 #define MCC_Q_LEN 128 /* total size not to exceed 8 pages */
69 #define MCC_CQ_LEN 256
71 #define BE_NAPI_WEIGHT 64
72 #define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
73 #define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
83 struct be_queue_info {
84 struct be_dma_mem dma_mem;
86 u16 entry_size; /* Size of an element in the queue */
90 atomic_t used; /* Number of valid elements in the queue */
93 static inline u32 MODULO(u16 val, u16 limit)
95 BUG_ON(limit & (limit - 1));
96 return val & (limit - 1);
99 static inline void index_adv(u16 *index, u16 val, u16 limit)
101 *index = MODULO((*index + val), limit);
104 static inline void index_inc(u16 *index, u16 limit)
106 *index = MODULO((*index + 1), limit);
109 static inline void *queue_head_node(struct be_queue_info *q)
111 return q->dma_mem.va + q->head * q->entry_size;
114 static inline void *queue_tail_node(struct be_queue_info *q)
116 return q->dma_mem.va + q->tail * q->entry_size;
119 static inline void queue_head_inc(struct be_queue_info *q)
121 index_inc(&q->head, q->len);
124 static inline void queue_tail_inc(struct be_queue_info *q)
126 index_inc(&q->tail, q->len);
130 struct be_queue_info q;
133 /* Adaptive interrupt coalescing (AIC) info */
135 u16 min_eqd; /* in usecs */
136 u16 max_eqd; /* in usecs */
137 u16 cur_eqd; /* in usecs */
139 struct napi_struct napi;
143 struct be_queue_info q;
144 struct be_queue_info cq;
147 struct be_drvr_stats {
148 u32 be_tx_reqs; /* number of TX requests initiated */
149 u32 be_tx_stops; /* number of times TX Q was stopped */
150 u32 be_fwd_reqs; /* number of send reqs through forwarding i/f */
151 u32 be_tx_wrbs; /* number of tx WRBs used */
152 u32 be_tx_events; /* number of tx completion events */
153 u32 be_tx_compl; /* number of tx completion entries processed */
156 u64 be_tx_bytes_prev;
159 u32 cache_barrier[16];
161 u32 be_ethrx_post_fail;/* number of ethrx buffer alloc failures */
162 u32 be_polls; /* number of times NAPI called poll function */
163 u32 be_rx_events; /* number of ucast rx completion events */
164 u32 be_rx_compl; /* number of rx completion entries processed */
167 u64 be_rx_bytes_prev;
169 /* number of non ether type II frames dropped where
170 * frame len > length field of Mac Hdr */
171 u32 be_802_3_dropped_frames;
172 /* number of non ether type II frames malformed where
173 * in frame len < length field of Mac Hdr */
174 u32 be_802_3_malformed_frames;
175 u32 be_rxcp_err; /* Num rx completion entries w/ err set. */
176 ulong rx_fps_jiffies; /* jiffies at last FPS calc */
178 u32 be_prev_rx_frags;
179 u32 be_rx_fps; /* Rx frags per second */
182 struct be_stats_obj {
183 struct be_drvr_stats drvr_stats;
184 struct net_device_stats net_stats;
185 struct be_dma_mem cmd;
189 struct be_queue_info q;
190 struct be_queue_info cq;
191 /* Remember the skbs that were transmitted */
192 struct sk_buff *sent_skb_list[TX_Q_LEN];
195 /* Struct to remember the pages posted for rx frags */
196 struct be_rx_page_info {
204 struct be_queue_info q;
205 struct be_queue_info cq;
206 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
209 #define BE_NUM_MSIX_VECTORS 2 /* 1 each for Tx and Rx */
211 struct pci_dev *pdev;
212 struct net_device *netdev;
215 u8 __iomem *db; /* Door Bell */
216 u8 __iomem *pcicfg; /* PCI config space */
218 spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
219 struct be_dma_mem mbox_mem;
220 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
221 * is stored for freeing purpose */
222 struct be_dma_mem mbox_mem_alloced;
224 struct be_mcc_obj mcc_obj;
225 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
226 spinlock_t mcc_cq_lock;
228 struct msix_entry msix_entries[BE_NUM_MSIX_VECTORS];
233 struct be_eq_obj tx_eq;
234 struct be_tx_obj tx_obj;
236 u32 cache_line_break[8];
239 struct be_eq_obj rx_eq;
240 struct be_rx_obj rx_obj;
241 u32 big_page_size; /* Compounded page size shared by rx wrbs */
242 bool rx_post_starved; /* Zero rx frags have been posted to BE */
244 struct vlan_group *vlan_grp;
246 u8 vlan_tag[VLAN_GROUP_ARRAY_LEN];
248 struct be_stats_obj stats;
249 /* Work queue used to perform periodic tasks like getting statistics */
250 struct delayed_work work;
252 /* Ethtool knobs and info */
253 bool rx_csum; /* BE card must perform rx-checksumming */
254 char fw_ver[FW_VER_LEN];
255 u32 if_handle; /* Used to configure filtering */
256 u32 pmac_id; /* MAC addr handle used by BE card */
263 extern const struct ethtool_ops be_ethtool_ops;
265 #define drvr_stats(adapter) (&adapter->stats.drvr_stats)
267 static inline unsigned int be_pci_func(struct be_adapter *adapter)
269 return PCI_FUNC(adapter->pdev->devfn);
272 #define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
274 #define PAGE_SHIFT_4K 12
275 #define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
277 /* Returns number of pages spanned by the data starting at the given addr */
278 #define PAGES_4K_SPANNED(_address, size) \
279 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
280 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
282 /* Byte offset into the page corresponding to given address */
283 #define OFFSET_IN_PAGE(addr) \
284 ((size_t)(addr) & (PAGE_SIZE_4K-1))
286 /* Returns bit offset within a DWORD of a bitfield */
287 #define AMAP_BIT_OFFSET(_struct, field) \
288 (((size_t)&(((_struct *)0)->field))%32)
290 /* Returns the bit mask of the field that is NOT shifted into location. */
291 static inline u32 amap_mask(u32 bitsize)
293 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
297 amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
299 u32 *dw = (u32 *) ptr + dw_offset;
300 *dw &= ~(mask << offset);
301 *dw |= (mask & value) << offset;
304 #define AMAP_SET_BITS(_struct, field, ptr, val) \
306 offsetof(_struct, field)/32, \
307 amap_mask(sizeof(((_struct *)0)->field)), \
308 AMAP_BIT_OFFSET(_struct, field), \
311 static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
313 u32 *dw = (u32 *) ptr;
314 return mask & (*(dw + dw_offset) >> offset);
317 #define AMAP_GET_BITS(_struct, field, ptr) \
319 offsetof(_struct, field)/32, \
320 amap_mask(sizeof(((_struct *)0)->field)), \
321 AMAP_BIT_OFFSET(_struct, field))
323 #define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
324 #define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
325 static inline void swap_dws(void *wrb, int len)
331 *dw = cpu_to_le32(*dw);
335 #endif /* __BIG_ENDIAN */
338 static inline u8 is_tcp_pkt(struct sk_buff *skb)
342 if (ip_hdr(skb)->version == 4)
343 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
344 else if (ip_hdr(skb)->version == 6)
345 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
350 static inline u8 is_udp_pkt(struct sk_buff *skb)
354 if (ip_hdr(skb)->version == 4)
355 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
356 else if (ip_hdr(skb)->version == 6)
357 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
362 extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
364 extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
365 extern int be_load_fw(struct be_adapter *adapter, u8 *func);