1 /*
2 * Copyright (C) 2005 - 2009 ServerEngines
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@serverengines.com
12 *
13 * ServerEngines
14 * 209 N. Fair Oaks Ave
15 * Sunnyvale, CA 94085
16 */
17
18 #ifndef BE_H
19 #define BE_H
20
21 #include <linux/pci.h>
22 #include <linux/etherdevice.h>
23 #include <linux/version.h>
24 #include <linux/delay.h>
25 #include <net/tcp.h>
26 #include <net/ip.h>
27 #include <net/ipv6.h>
28 #include <linux/if_vlan.h>
29 #include <linux/workqueue.h>
30 #include <linux/interrupt.h>
31 #include <linux/inet_lro.h>
32
33 #include "be_hw.h"
34
35 #define DRV_VER "2.0.348"
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"
40
41 #define BE_VENDOR_ID 0x19a2
42 #define BE_DEVICE_ID1 0x211
43 #define OC_DEVICE_ID1 0x700
44 #define OC_DEVICE_ID2 0x701
45
46 static inline char *nic_name(struct pci_dev *pdev)
47 {
48 if (pdev->device == OC_DEVICE_ID1 || pdev->device == OC_DEVICE_ID2)
49 return OC_NAME;
50 else
51 return BE_NAME;
52 }
53
54 /* Number of bytes of an RX frame that are copied to skb->data */
55 #define BE_HDR_LEN 64
56 #define BE_MAX_JUMBO_FRAME_SIZE 9018
57 #define BE_MIN_MTU 256
58
59 #define BE_NUM_VLANS_SUPPORTED 64
60 #define BE_MAX_EQD 96
61 #define BE_MAX_TX_FRAG_COUNT 30
62
63 #define EVNT_Q_LEN 1024
64 #define TX_Q_LEN 2048
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
70
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)
74
75 #define BE_MAX_LRO_DESCRIPTORS 16
76 #define BE_MAX_FRAGS_PER_FRAME (min((u32) 16, (u32) MAX_SKB_FRAGS))
77
78 struct be_dma_mem {
79 void *va;
80 dma_addr_t dma;
81 u32 size;
82 };
83
84 struct be_queue_info {
85 struct be_dma_mem dma_mem;
86 u16 len;
87 u16 entry_size; /* Size of an element in the queue */
88 u16 id;
89 u16 tail, head;
90 bool created;
91 atomic_t used; /* Number of valid elements in the queue */
92 };
93
94 static inline u32 MODULO(u16 val, u16 limit)
95 {
96 BUG_ON(limit & (limit - 1));
97 return val & (limit - 1);
98 }
99
100 static inline void index_adv(u16 *index, u16 val, u16 limit)
101 {
102 *index = MODULO((*index + val), limit);
103 }
104
105 static inline void index_inc(u16 *index, u16 limit)
106 {
107 *index = MODULO((*index + 1), limit);
108 }
109
110 static inline void *queue_head_node(struct be_queue_info *q)
111 {
112 return q->dma_mem.va + q->head * q->entry_size;
113 }
114
115 static inline void *queue_tail_node(struct be_queue_info *q)
116 {
117 return q->dma_mem.va + q->tail * q->entry_size;
118 }
119
120 static inline void queue_head_inc(struct be_queue_info *q)
121 {
122 index_inc(&q->head, q->len);
123 }
124
125 static inline void queue_tail_inc(struct be_queue_info *q)
126 {
127 index_inc(&q->tail, q->len);
128 }
129
130
131 struct be_eq_obj {
132 struct be_queue_info q;
133 char desc[32];
134
135 /* Adaptive interrupt coalescing (AIC) info */
136 bool enable_aic;
137 u16 min_eqd; /* in usecs */
138 u16 max_eqd; /* in usecs */
139 u16 cur_eqd; /* in usecs */
140
141 struct napi_struct napi;
142 };
143
144 struct be_mcc_obj {
145 struct be_queue_info q;
146 struct be_queue_info cq;
147 };
148
149 struct be_ctrl_info {
150 u8 __iomem *csr;
151 u8 __iomem *db; /* Door Bell */
152 u8 __iomem *pcicfg; /* PCI config space */
153 int pci_func;
154
155 /* Mbox used for cmd request/response */
156 spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
157 struct be_dma_mem mbox_mem;
158 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
159 * is stored for freeing purpose */
160 struct be_dma_mem mbox_mem_alloced;
161
162 /* MCC Rings */
163 struct be_mcc_obj mcc_obj;
164 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
165 spinlock_t mcc_cq_lock;
166
167 /* MCC Async callback */
168 void (*async_cb)(void *adapter, bool link_up);
169 void *adapter_ctxt;
170 };
171
172 #include "be_cmds.h"
173
174 struct be_drvr_stats {
175 u32 be_tx_reqs; /* number of TX requests initiated */
176 u32 be_tx_stops; /* number of times TX Q was stopped */
177 u32 be_fwd_reqs; /* number of send reqs through forwarding i/f */
178 u32 be_tx_wrbs; /* number of tx WRBs used */
179 u32 be_tx_events; /* number of tx completion events */
180 u32 be_tx_compl; /* number of tx completion entries processed */
181 ulong be_tx_jiffies;
182 u64 be_tx_bytes;
183 u64 be_tx_bytes_prev;
184 u32 be_tx_rate;
185
186 u32 cache_barrier[16];
187
188 u32 be_ethrx_post_fail;/* number of ethrx buffer alloc failures */
189 u32 be_polls; /* number of times NAPI called poll function */
190 u32 be_rx_events; /* number of ucast rx completion events */
191 u32 be_rx_compl; /* number of rx completion entries processed */
192 u32 be_lro_hgram_data[8]; /* histogram of LRO data packets */
193 u32 be_lro_hgram_ack[8]; /* histogram of LRO ACKs */
194 ulong be_rx_jiffies;
195 u64 be_rx_bytes;
196 u64 be_rx_bytes_prev;
197 u32 be_rx_rate;
198 /* number of non ether type II frames dropped where
199 * frame len > length field of Mac Hdr */
200 u32 be_802_3_dropped_frames;
201 /* number of non ether type II frames malformed where
202 * in frame len < length field of Mac Hdr */
203 u32 be_802_3_malformed_frames;
204 u32 be_rxcp_err; /* Num rx completion entries w/ err set. */
205 ulong rx_fps_jiffies; /* jiffies at last FPS calc */
206 u32 be_rx_frags;
207 u32 be_prev_rx_frags;
208 u32 be_rx_fps; /* Rx frags per second */
209 };
210
211 struct be_stats_obj {
212 struct be_drvr_stats drvr_stats;
213 struct net_device_stats net_stats;
214 struct be_dma_mem cmd;
215 };
216
217 struct be_tx_obj {
218 struct be_queue_info q;
219 struct be_queue_info cq;
220 /* Remember the skbs that were transmitted */
221 struct sk_buff *sent_skb_list[TX_Q_LEN];
222 };
223
224 /* Struct to remember the pages posted for rx frags */
225 struct be_rx_page_info {
226 struct page *page;
227 dma_addr_t bus;
228 u16 page_offset;
229 bool last_page_user;
230 };
231
232 struct be_rx_obj {
233 struct be_queue_info q;
234 struct be_queue_info cq;
235 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
236 struct net_lro_mgr lro_mgr;
237 struct net_lro_desc lro_desc[BE_MAX_LRO_DESCRIPTORS];
238 };
239
240 #define BE_NUM_MSIX_VECTORS 2 /* 1 each for Tx and Rx */
241 struct be_adapter {
242 struct pci_dev *pdev;
243 struct net_device *netdev;
244
245 /* Mbox, pci config, csr address information */
246 struct be_ctrl_info ctrl;
247
248 struct msix_entry msix_entries[BE_NUM_MSIX_VECTORS];
249 bool msix_enabled;
250 bool isr_registered;
251
252 /* TX Rings */
253 struct be_eq_obj tx_eq;
254 struct be_tx_obj tx_obj;
255
256 u32 cache_line_break[8];
257
258 /* Rx rings */
259 struct be_eq_obj rx_eq;
260 struct be_rx_obj rx_obj;
261 u32 big_page_size; /* Compounded page size shared by rx wrbs */
262 bool rx_post_starved; /* Zero rx frags have been posted to BE */
263
264 struct vlan_group *vlan_grp;
265 u16 num_vlans;
266 u8 vlan_tag[VLAN_GROUP_ARRAY_LEN];
267
268 struct be_stats_obj stats;
269 /* Work queue used to perform periodic tasks like getting statistics */
270 struct delayed_work work;
271
272 /* Ethtool knobs and info */
273 bool rx_csum; /* BE card must perform rx-checksumming */
274 u32 max_rx_coal;
275 char fw_ver[FW_VER_LEN];
276 u32 if_handle; /* Used to configure filtering */
277 u32 pmac_id; /* MAC addr handle used by BE card */
278
279 bool link_up;
280 u32 port_num;
281 bool promiscuous;
282 };
283
284 extern struct ethtool_ops be_ethtool_ops;
285
286 #define drvr_stats(adapter) (&adapter->stats.drvr_stats)
287
288 #define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
289
290 #define PAGE_SHIFT_4K 12
291 #define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
292
293 /* Returns number of pages spanned by the data starting at the given addr */
294 #define PAGES_4K_SPANNED(_address, size) \
295 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
296 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
297
298 /* Byte offset into the page corresponding to given address */
299 #define OFFSET_IN_PAGE(addr) \
300 ((size_t)(addr) & (PAGE_SIZE_4K-1))
301
302 /* Returns bit offset within a DWORD of a bitfield */
303 #define AMAP_BIT_OFFSET(_struct, field) \
304 (((size_t)&(((_struct *)0)->field))%32)
305
306 /* Returns the bit mask of the field that is NOT shifted into location. */
307 static inline u32 amap_mask(u32 bitsize)
308 {
309 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
310 }
311
312 static inline void
313 amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
314 {
315 u32 *dw = (u32 *) ptr + dw_offset;
316 *dw &= ~(mask << offset);
317 *dw |= (mask & value) << offset;
318 }
319
320 #define AMAP_SET_BITS(_struct, field, ptr, val) \
321 amap_set(ptr, \
322 offsetof(_struct, field)/32, \
323 amap_mask(sizeof(((_struct *)0)->field)), \
324 AMAP_BIT_OFFSET(_struct, field), \
325 val)
326
327 static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
328 {
329 u32 *dw = (u32 *) ptr;
330 return mask & (*(dw + dw_offset) >> offset);
331 }
332
333 #define AMAP_GET_BITS(_struct, field, ptr) \
334 amap_get(ptr, \
335 offsetof(_struct, field)/32, \
336 amap_mask(sizeof(((_struct *)0)->field)), \
337 AMAP_BIT_OFFSET(_struct, field))
338
339 #define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
340 #define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
341 static inline void swap_dws(void *wrb, int len)
342 {
343 #ifdef __BIG_ENDIAN
344 u32 *dw = wrb;
345 BUG_ON(len % 4);
346 do {
347 *dw = cpu_to_le32(*dw);
348 dw++;
349 len -= 4;
350 } while (len);
351 #endif /* __BIG_ENDIAN */
352 }
353
354 static inline u8 is_tcp_pkt(struct sk_buff *skb)
355 {
356 u8 val = 0;
357
358 if (ip_hdr(skb)->version == 4)
359 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
360 else if (ip_hdr(skb)->version == 6)
361 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
362
363 return val;
364 }
365
366 static inline u8 is_udp_pkt(struct sk_buff *skb)
367 {
368 u8 val = 0;
369
370 if (ip_hdr(skb)->version == 4)
371 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
372 else if (ip_hdr(skb)->version == 6)
373 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
374
375 return val;
376 }
377
378 extern void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid, bool arm,
379 u16 num_popped);
380 #endif /* BE_H */
381
|
This page was automatically generated by the
LXR engine.
|