be2net: a mini optimization in rx_compl_process() code
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / benet / be.h
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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>
84517482 31#include <linux/firmware.h>
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32
33#include "be_hw.h"
34
3454f835 35#define DRV_VER "2.101.346u"
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36#define DRV_NAME "be2net"
37#define BE_NAME "ServerEngines BladeEngine2 10Gbps NIC"
12d7ea2c 38#define BE3_NAME "ServerEngines BladeEngine3 10Gbps NIC"
c4ca2374 39#define OC_NAME "Emulex OneConnect 10Gbps NIC"
12d7ea2c 40#define OC_NAME1 "Emulex OneConnect 10Gbps NIC (be3)"
35ecf03c 41#define DRV_DESC "ServerEngines BladeEngine 10Gbps NIC Driver"
6b7c5b94 42
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43#define BE_VENDOR_ID 0x19a2
44#define BE_DEVICE_ID1 0x211
12d7ea2c 45#define BE_DEVICE_ID2 0x221
c4ca2374 46#define OC_DEVICE_ID1 0x700
e254f6ec 47#define OC_DEVICE_ID2 0x710
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48
49static inline char *nic_name(struct pci_dev *pdev)
50{
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51 switch (pdev->device) {
52 case OC_DEVICE_ID1:
c4ca2374 53 return OC_NAME;
e254f6ec 54 case OC_DEVICE_ID2:
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55 return OC_NAME1;
56 case BE_DEVICE_ID2:
57 return BE3_NAME;
58 default:
c4ca2374 59 return BE_NAME;
12d7ea2c 60 }
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61}
62
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63/* Number of bytes of an RX frame that are copied to skb->data */
64#define BE_HDR_LEN 64
65#define BE_MAX_JUMBO_FRAME_SIZE 9018
66#define BE_MIN_MTU 256
67
68#define BE_NUM_VLANS_SUPPORTED 64
69#define BE_MAX_EQD 96
70#define BE_MAX_TX_FRAG_COUNT 30
71
72#define EVNT_Q_LEN 1024
73#define TX_Q_LEN 2048
74#define TX_CQ_LEN 1024
75#define RX_Q_LEN 1024 /* Does not support any other value */
76#define RX_CQ_LEN 1024
5fb379ee 77#define MCC_Q_LEN 128 /* total size not to exceed 8 pages */
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78#define MCC_CQ_LEN 256
79
80#define BE_NAPI_WEIGHT 64
81#define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
82#define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
83
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84#define FW_VER_LEN 32
85
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86struct be_dma_mem {
87 void *va;
88 dma_addr_t dma;
89 u32 size;
90};
91
92struct be_queue_info {
93 struct be_dma_mem dma_mem;
94 u16 len;
95 u16 entry_size; /* Size of an element in the queue */
96 u16 id;
97 u16 tail, head;
98 bool created;
99 atomic_t used; /* Number of valid elements in the queue */
100};
101
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102static inline u32 MODULO(u16 val, u16 limit)
103{
104 BUG_ON(limit & (limit - 1));
105 return val & (limit - 1);
106}
107
108static inline void index_adv(u16 *index, u16 val, u16 limit)
109{
110 *index = MODULO((*index + val), limit);
111}
112
113static inline void index_inc(u16 *index, u16 limit)
114{
115 *index = MODULO((*index + 1), limit);
116}
117
118static inline void *queue_head_node(struct be_queue_info *q)
119{
120 return q->dma_mem.va + q->head * q->entry_size;
121}
122
123static inline void *queue_tail_node(struct be_queue_info *q)
124{
125 return q->dma_mem.va + q->tail * q->entry_size;
126}
127
128static inline void queue_head_inc(struct be_queue_info *q)
129{
130 index_inc(&q->head, q->len);
131}
132
133static inline void queue_tail_inc(struct be_queue_info *q)
134{
135 index_inc(&q->tail, q->len);
136}
137
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138struct be_eq_obj {
139 struct be_queue_info q;
140 char desc[32];
141
142 /* Adaptive interrupt coalescing (AIC) info */
143 bool enable_aic;
144 u16 min_eqd; /* in usecs */
145 u16 max_eqd; /* in usecs */
146 u16 cur_eqd; /* in usecs */
147
148 struct napi_struct napi;
149};
150
151struct be_mcc_obj {
152 struct be_queue_info q;
153 struct be_queue_info cq;
154};
155
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156struct be_drvr_stats {
157 u32 be_tx_reqs; /* number of TX requests initiated */
158 u32 be_tx_stops; /* number of times TX Q was stopped */
159 u32 be_fwd_reqs; /* number of send reqs through forwarding i/f */
160 u32 be_tx_wrbs; /* number of tx WRBs used */
161 u32 be_tx_events; /* number of tx completion events */
162 u32 be_tx_compl; /* number of tx completion entries processed */
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163 ulong be_tx_jiffies;
164 u64 be_tx_bytes;
165 u64 be_tx_bytes_prev;
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166 u32 be_tx_rate;
167
168 u32 cache_barrier[16];
169
170 u32 be_ethrx_post_fail;/* number of ethrx buffer alloc failures */
b7b83ac3 171 u32 be_rx_polls; /* number of times NAPI called poll function */
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172 u32 be_rx_events; /* number of ucast rx completion events */
173 u32 be_rx_compl; /* number of rx completion entries processed */
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174 ulong be_rx_jiffies;
175 u64 be_rx_bytes;
176 u64 be_rx_bytes_prev;
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177 u32 be_rx_rate;
178 /* number of non ether type II frames dropped where
179 * frame len > length field of Mac Hdr */
180 u32 be_802_3_dropped_frames;
181 /* number of non ether type II frames malformed where
182 * in frame len < length field of Mac Hdr */
183 u32 be_802_3_malformed_frames;
184 u32 be_rxcp_err; /* Num rx completion entries w/ err set. */
185 ulong rx_fps_jiffies; /* jiffies at last FPS calc */
186 u32 be_rx_frags;
187 u32 be_prev_rx_frags;
188 u32 be_rx_fps; /* Rx frags per second */
189};
190
191struct be_stats_obj {
192 struct be_drvr_stats drvr_stats;
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193 struct be_dma_mem cmd;
194};
195
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196struct be_tx_obj {
197 struct be_queue_info q;
198 struct be_queue_info cq;
199 /* Remember the skbs that were transmitted */
200 struct sk_buff *sent_skb_list[TX_Q_LEN];
201};
202
203/* Struct to remember the pages posted for rx frags */
204struct be_rx_page_info {
205 struct page *page;
206 dma_addr_t bus;
207 u16 page_offset;
208 bool last_page_user;
209};
210
211struct be_rx_obj {
212 struct be_queue_info q;
213 struct be_queue_info cq;
214 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
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215};
216
217#define BE_NUM_MSIX_VECTORS 2 /* 1 each for Tx and Rx */
218struct be_adapter {
219 struct pci_dev *pdev;
220 struct net_device *netdev;
221
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222 u8 __iomem *csr;
223 u8 __iomem *db; /* Door Bell */
224 u8 __iomem *pcicfg; /* PCI config space */
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225
226 spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
227 struct be_dma_mem mbox_mem;
228 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
229 * is stored for freeing purpose */
230 struct be_dma_mem mbox_mem_alloced;
231
232 struct be_mcc_obj mcc_obj;
233 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
234 spinlock_t mcc_cq_lock;
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235
236 struct msix_entry msix_entries[BE_NUM_MSIX_VECTORS];
237 bool msix_enabled;
238 bool isr_registered;
239
240 /* TX Rings */
241 struct be_eq_obj tx_eq;
242 struct be_tx_obj tx_obj;
243
244 u32 cache_line_break[8];
245
246 /* Rx rings */
247 struct be_eq_obj rx_eq;
248 struct be_rx_obj rx_obj;
249 u32 big_page_size; /* Compounded page size shared by rx wrbs */
ea1dae11 250 bool rx_post_starved; /* Zero rx frags have been posted to BE */
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251
252 struct vlan_group *vlan_grp;
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253 u16 vlans_added;
254 u16 max_vlans; /* Number of vlans supported */
6b7c5b94 255 u8 vlan_tag[VLAN_GROUP_ARRAY_LEN];
e7b909a6 256 struct be_dma_mem mc_cmd_mem;
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257
258 struct be_stats_obj stats;
259 /* Work queue used to perform periodic tasks like getting statistics */
260 struct delayed_work work;
261
262 /* Ethtool knobs and info */
263 bool rx_csum; /* BE card must perform rx-checksumming */
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264 char fw_ver[FW_VER_LEN];
265 u32 if_handle; /* Used to configure filtering */
266 u32 pmac_id; /* MAC addr handle used by BE card */
267
cf588477 268 bool eeh_err;
a8f447bd 269 bool link_up;
6b7c5b94 270 u32 port_num;
24307eef 271 bool promiscuous;
71d8d1b5 272 bool wol;
dcb9b564 273 u32 cap;
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274 u32 rx_fc; /* Rx flow control */
275 u32 tx_fc; /* Tx flow control */
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276 int link_speed;
277 u8 port_type;
16c02145 278 u8 transceiver;
7b139c83 279 u8 generation; /* BladeEngine ASIC generation */
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280};
281
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282/* BladeEngine Generation numbers */
283#define BE_GEN2 2
284#define BE_GEN3 3
285
0fc0b732 286extern const struct ethtool_ops be_ethtool_ops;
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287
288#define drvr_stats(adapter) (&adapter->stats.drvr_stats)
289
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290static inline unsigned int be_pci_func(struct be_adapter *adapter)
291{
292 return PCI_FUNC(adapter->pdev->devfn);
293}
294
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295#define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
296
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297#define PAGE_SHIFT_4K 12
298#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
299
300/* Returns number of pages spanned by the data starting at the given addr */
301#define PAGES_4K_SPANNED(_address, size) \
302 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
303 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
304
305/* Byte offset into the page corresponding to given address */
306#define OFFSET_IN_PAGE(addr) \
307 ((size_t)(addr) & (PAGE_SIZE_4K-1))
308
309/* Returns bit offset within a DWORD of a bitfield */
310#define AMAP_BIT_OFFSET(_struct, field) \
311 (((size_t)&(((_struct *)0)->field))%32)
312
313/* Returns the bit mask of the field that is NOT shifted into location. */
314static inline u32 amap_mask(u32 bitsize)
315{
316 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
317}
318
319static inline void
320amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
321{
322 u32 *dw = (u32 *) ptr + dw_offset;
323 *dw &= ~(mask << offset);
324 *dw |= (mask & value) << offset;
325}
326
327#define AMAP_SET_BITS(_struct, field, ptr, val) \
328 amap_set(ptr, \
329 offsetof(_struct, field)/32, \
330 amap_mask(sizeof(((_struct *)0)->field)), \
331 AMAP_BIT_OFFSET(_struct, field), \
332 val)
333
334static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
335{
336 u32 *dw = (u32 *) ptr;
337 return mask & (*(dw + dw_offset) >> offset);
338}
339
340#define AMAP_GET_BITS(_struct, field, ptr) \
341 amap_get(ptr, \
342 offsetof(_struct, field)/32, \
343 amap_mask(sizeof(((_struct *)0)->field)), \
344 AMAP_BIT_OFFSET(_struct, field))
345
346#define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
347#define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
348static inline void swap_dws(void *wrb, int len)
349{
350#ifdef __BIG_ENDIAN
351 u32 *dw = wrb;
352 BUG_ON(len % 4);
353 do {
354 *dw = cpu_to_le32(*dw);
355 dw++;
356 len -= 4;
357 } while (len);
358#endif /* __BIG_ENDIAN */
359}
360
361static inline u8 is_tcp_pkt(struct sk_buff *skb)
362{
363 u8 val = 0;
364
365 if (ip_hdr(skb)->version == 4)
366 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
367 else if (ip_hdr(skb)->version == 6)
368 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
369
370 return val;
371}
372
373static inline u8 is_udp_pkt(struct sk_buff *skb)
374{
375 u8 val = 0;
376
377 if (ip_hdr(skb)->version == 4)
378 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
379 else if (ip_hdr(skb)->version == 6)
380 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
381
382 return val;
383}
384
8788fdc2 385extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
5fb379ee 386 u16 num_popped);
8788fdc2 387extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
b31c50a7 388extern void netdev_stats_update(struct be_adapter *adapter);
84517482 389extern int be_load_fw(struct be_adapter *adapter, u8 *func);
6b7c5b94 390#endif /* BE_H */