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)
80 struct be_queue_info {
81 struct be_dma_mem dma_mem;
83 u16 entry_size; /* Size of an element in the queue */
87 atomic_t used; /* Number of valid elements in the queue */
90 static inline u32 MODULO(u16 val, u16 limit)
92 BUG_ON(limit & (limit - 1));
93 return val & (limit - 1);
96 static inline void index_adv(u16 *index, u16 val, u16 limit)
98 *index = MODULO((*index + val), limit);
101 static inline void index_inc(u16 *index, u16 limit)
103 *index = MODULO((*index + 1), limit);
106 static inline void *queue_head_node(struct be_queue_info *q)
108 return q->dma_mem.va + q->head * q->entry_size;
111 static inline void *queue_tail_node(struct be_queue_info *q)
113 return q->dma_mem.va + q->tail * q->entry_size;
116 static inline void queue_head_inc(struct be_queue_info *q)
118 index_inc(&q->head, q->len);
121 static inline void queue_tail_inc(struct be_queue_info *q)
123 index_inc(&q->tail, q->len);
128 struct be_queue_info q;
131 /* Adaptive interrupt coalescing (AIC) info */
133 u16 min_eqd; /* in usecs */
134 u16 max_eqd; /* in usecs */
135 u16 cur_eqd; /* in usecs */
137 struct napi_struct napi;
141 struct be_queue_info q;
142 struct be_queue_info cq;
145 struct be_ctrl_info {
147 u8 __iomem *db; /* Door Bell */
148 u8 __iomem *pcicfg; /* PCI config space */
151 /* Mbox used for cmd request/response */
152 spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
153 struct be_dma_mem mbox_mem;
154 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
155 * is stored for freeing purpose */
156 struct be_dma_mem mbox_mem_alloced;
159 struct be_mcc_obj mcc_obj;
160 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
161 spinlock_t mcc_cq_lock;
163 /* MCC Async callback */
164 void (*async_cb)(void *adapter, bool link_up);
170 struct be_drvr_stats {
171 u32 be_tx_reqs; /* number of TX requests initiated */
172 u32 be_tx_stops; /* number of times TX Q was stopped */
173 u32 be_fwd_reqs; /* number of send reqs through forwarding i/f */
174 u32 be_tx_wrbs; /* number of tx WRBs used */
175 u32 be_tx_events; /* number of tx completion events */
176 u32 be_tx_compl; /* number of tx completion entries processed */
179 u64 be_tx_bytes_prev;
182 u32 cache_barrier[16];
184 u32 be_ethrx_post_fail;/* number of ethrx buffer alloc failures */
185 u32 be_polls; /* number of times NAPI called poll function */
186 u32 be_rx_events; /* number of ucast rx completion events */
187 u32 be_rx_compl; /* number of rx completion entries processed */
190 u64 be_rx_bytes_prev;
192 /* number of non ether type II frames dropped where
193 * frame len > length field of Mac Hdr */
194 u32 be_802_3_dropped_frames;
195 /* number of non ether type II frames malformed where
196 * in frame len < length field of Mac Hdr */
197 u32 be_802_3_malformed_frames;
198 u32 be_rxcp_err; /* Num rx completion entries w/ err set. */
199 ulong rx_fps_jiffies; /* jiffies at last FPS calc */
201 u32 be_prev_rx_frags;
202 u32 be_rx_fps; /* Rx frags per second */
205 struct be_stats_obj {
206 struct be_drvr_stats drvr_stats;
207 struct net_device_stats net_stats;
208 struct be_dma_mem cmd;
212 struct be_queue_info q;
213 struct be_queue_info cq;
214 /* Remember the skbs that were transmitted */
215 struct sk_buff *sent_skb_list[TX_Q_LEN];
218 /* Struct to remember the pages posted for rx frags */
219 struct be_rx_page_info {
227 struct be_queue_info q;
228 struct be_queue_info cq;
229 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
232 #define BE_NUM_MSIX_VECTORS 2 /* 1 each for Tx and Rx */
234 struct pci_dev *pdev;
235 struct net_device *netdev;
237 /* Mbox, pci config, csr address information */
238 struct be_ctrl_info ctrl;
240 struct msix_entry msix_entries[BE_NUM_MSIX_VECTORS];
245 struct be_eq_obj tx_eq;
246 struct be_tx_obj tx_obj;
248 u32 cache_line_break[8];
251 struct be_eq_obj rx_eq;
252 struct be_rx_obj rx_obj;
253 u32 big_page_size; /* Compounded page size shared by rx wrbs */
254 bool rx_post_starved; /* Zero rx frags have been posted to BE */
256 struct vlan_group *vlan_grp;
258 u8 vlan_tag[VLAN_GROUP_ARRAY_LEN];
260 struct be_stats_obj stats;
261 /* Work queue used to perform periodic tasks like getting statistics */
262 struct delayed_work work;
264 /* Ethtool knobs and info */
265 bool rx_csum; /* BE card must perform rx-checksumming */
266 char fw_ver[FW_VER_LEN];
267 u32 if_handle; /* Used to configure filtering */
268 u32 pmac_id; /* MAC addr handle used by BE card */
275 extern struct ethtool_ops be_ethtool_ops;
277 #define drvr_stats(adapter) (&adapter->stats.drvr_stats)
279 #define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
281 #define PAGE_SHIFT_4K 12
282 #define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
284 /* Returns number of pages spanned by the data starting at the given addr */
285 #define PAGES_4K_SPANNED(_address, size) \
286 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
287 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
289 /* Byte offset into the page corresponding to given address */
290 #define OFFSET_IN_PAGE(addr) \
291 ((size_t)(addr) & (PAGE_SIZE_4K-1))
293 /* Returns bit offset within a DWORD of a bitfield */
294 #define AMAP_BIT_OFFSET(_struct, field) \
295 (((size_t)&(((_struct *)0)->field))%32)
297 /* Returns the bit mask of the field that is NOT shifted into location. */
298 static inline u32 amap_mask(u32 bitsize)
300 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
304 amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
306 u32 *dw = (u32 *) ptr + dw_offset;
307 *dw &= ~(mask << offset);
308 *dw |= (mask & value) << offset;
311 #define AMAP_SET_BITS(_struct, field, ptr, val) \
313 offsetof(_struct, field)/32, \
314 amap_mask(sizeof(((_struct *)0)->field)), \
315 AMAP_BIT_OFFSET(_struct, field), \
318 static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
320 u32 *dw = (u32 *) ptr;
321 return mask & (*(dw + dw_offset) >> offset);
324 #define AMAP_GET_BITS(_struct, field, ptr) \
326 offsetof(_struct, field)/32, \
327 amap_mask(sizeof(((_struct *)0)->field)), \
328 AMAP_BIT_OFFSET(_struct, field))
330 #define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
331 #define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
332 static inline void swap_dws(void *wrb, int len)
338 *dw = cpu_to_le32(*dw);
342 #endif /* __BIG_ENDIAN */
345 static inline u8 is_tcp_pkt(struct sk_buff *skb)
349 if (ip_hdr(skb)->version == 4)
350 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
351 else if (ip_hdr(skb)->version == 6)
352 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
357 static inline u8 is_udp_pkt(struct sk_buff *skb)
361 if (ip_hdr(skb)->version == 4)
362 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
363 else if (ip_hdr(skb)->version == 6)
364 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
369 extern void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid, bool arm,