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be2net: Adding PCI SRIOV support
[net-next-2.6.git] / drivers / net / benet / be.h
CommitLineData
6b7c5b94 1/*
294aedcf 2 * Copyright (C) 2005 - 2010 ServerEngines
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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
9772a431 35#define DRV_VER "2.102.147u"
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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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86#define BE_MAX_VF 32
87
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88struct be_dma_mem {
89 void *va;
90 dma_addr_t dma;
91 u32 size;
92};
93
94struct be_queue_info {
95 struct be_dma_mem dma_mem;
96 u16 len;
97 u16 entry_size; /* Size of an element in the queue */
98 u16 id;
99 u16 tail, head;
100 bool created;
101 atomic_t used; /* Number of valid elements in the queue */
102};
103
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104static inline u32 MODULO(u16 val, u16 limit)
105{
106 BUG_ON(limit & (limit - 1));
107 return val & (limit - 1);
108}
109
110static inline void index_adv(u16 *index, u16 val, u16 limit)
111{
112 *index = MODULO((*index + val), limit);
113}
114
115static inline void index_inc(u16 *index, u16 limit)
116{
117 *index = MODULO((*index + 1), limit);
118}
119
120static inline void *queue_head_node(struct be_queue_info *q)
121{
122 return q->dma_mem.va + q->head * q->entry_size;
123}
124
125static inline void *queue_tail_node(struct be_queue_info *q)
126{
127 return q->dma_mem.va + q->tail * q->entry_size;
128}
129
130static inline void queue_head_inc(struct be_queue_info *q)
131{
132 index_inc(&q->head, q->len);
133}
134
135static inline void queue_tail_inc(struct be_queue_info *q)
136{
137 index_inc(&q->tail, q->len);
138}
139
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140struct be_eq_obj {
141 struct be_queue_info q;
142 char desc[32];
143
144 /* Adaptive interrupt coalescing (AIC) info */
145 bool enable_aic;
146 u16 min_eqd; /* in usecs */
147 u16 max_eqd; /* in usecs */
148 u16 cur_eqd; /* in usecs */
149
150 struct napi_struct napi;
151};
152
153struct be_mcc_obj {
154 struct be_queue_info q;
155 struct be_queue_info cq;
7a1e9b20 156 bool rearm_cq;
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157};
158
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159struct be_drvr_stats {
160 u32 be_tx_reqs; /* number of TX requests initiated */
161 u32 be_tx_stops; /* number of times TX Q was stopped */
162 u32 be_fwd_reqs; /* number of send reqs through forwarding i/f */
163 u32 be_tx_wrbs; /* number of tx WRBs used */
164 u32 be_tx_events; /* number of tx completion events */
165 u32 be_tx_compl; /* number of tx completion entries processed */
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166 ulong be_tx_jiffies;
167 u64 be_tx_bytes;
168 u64 be_tx_bytes_prev;
91992e44 169 u64 be_tx_pkts;
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170 u32 be_tx_rate;
171
172 u32 cache_barrier[16];
173
174 u32 be_ethrx_post_fail;/* number of ethrx buffer alloc failures */
b7b83ac3 175 u32 be_rx_polls; /* number of times NAPI called poll function */
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176 u32 be_rx_events; /* number of ucast rx completion events */
177 u32 be_rx_compl; /* number of rx completion entries processed */
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178 ulong be_rx_jiffies;
179 u64 be_rx_bytes;
180 u64 be_rx_bytes_prev;
91992e44 181 u64 be_rx_pkts;
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182 u32 be_rx_rate;
183 /* number of non ether type II frames dropped where
184 * frame len > length field of Mac Hdr */
185 u32 be_802_3_dropped_frames;
186 /* number of non ether type II frames malformed where
187 * in frame len < length field of Mac Hdr */
188 u32 be_802_3_malformed_frames;
189 u32 be_rxcp_err; /* Num rx completion entries w/ err set. */
190 ulong rx_fps_jiffies; /* jiffies at last FPS calc */
191 u32 be_rx_frags;
192 u32 be_prev_rx_frags;
193 u32 be_rx_fps; /* Rx frags per second */
194};
195
196struct be_stats_obj {
197 struct be_drvr_stats drvr_stats;
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198 struct be_dma_mem cmd;
199};
200
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201struct be_tx_obj {
202 struct be_queue_info q;
203 struct be_queue_info cq;
204 /* Remember the skbs that were transmitted */
205 struct sk_buff *sent_skb_list[TX_Q_LEN];
206};
207
208/* Struct to remember the pages posted for rx frags */
209struct be_rx_page_info {
210 struct page *page;
211 dma_addr_t bus;
212 u16 page_offset;
213 bool last_page_user;
214};
215
216struct be_rx_obj {
217 struct be_queue_info q;
218 struct be_queue_info cq;
219 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
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220};
221
222#define BE_NUM_MSIX_VECTORS 2 /* 1 each for Tx and Rx */
223struct be_adapter {
224 struct pci_dev *pdev;
225 struct net_device *netdev;
226
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227 u8 __iomem *csr;
228 u8 __iomem *db; /* Door Bell */
229 u8 __iomem *pcicfg; /* PCI config space */
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230
231 spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
232 struct be_dma_mem mbox_mem;
233 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
234 * is stored for freeing purpose */
235 struct be_dma_mem mbox_mem_alloced;
236
237 struct be_mcc_obj mcc_obj;
238 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
239 spinlock_t mcc_cq_lock;
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240
241 struct msix_entry msix_entries[BE_NUM_MSIX_VECTORS];
242 bool msix_enabled;
243 bool isr_registered;
244
245 /* TX Rings */
246 struct be_eq_obj tx_eq;
247 struct be_tx_obj tx_obj;
248
249 u32 cache_line_break[8];
250
251 /* Rx rings */
252 struct be_eq_obj rx_eq;
253 struct be_rx_obj rx_obj;
254 u32 big_page_size; /* Compounded page size shared by rx wrbs */
ea1dae11 255 bool rx_post_starved; /* Zero rx frags have been posted to BE */
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256
257 struct vlan_group *vlan_grp;
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258 u16 vlans_added;
259 u16 max_vlans; /* Number of vlans supported */
6b7c5b94 260 u8 vlan_tag[VLAN_GROUP_ARRAY_LEN];
e7b909a6 261 struct be_dma_mem mc_cmd_mem;
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262
263 struct be_stats_obj stats;
264 /* Work queue used to perform periodic tasks like getting statistics */
265 struct delayed_work work;
266
267 /* Ethtool knobs and info */
268 bool rx_csum; /* BE card must perform rx-checksumming */
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269 char fw_ver[FW_VER_LEN];
270 u32 if_handle; /* Used to configure filtering */
271 u32 pmac_id; /* MAC addr handle used by BE card */
272
cf588477 273 bool eeh_err;
a8f447bd 274 bool link_up;
6b7c5b94 275 u32 port_num;
24307eef 276 bool promiscuous;
71d8d1b5 277 bool wol;
dcb9b564 278 u32 cap;
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279 u32 rx_fc; /* Rx flow control */
280 u32 tx_fc; /* Tx flow control */
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281 int link_speed;
282 u8 port_type;
16c02145 283 u8 transceiver;
7b139c83 284 u8 generation; /* BladeEngine ASIC generation */
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285
286 bool sriov_enabled;
287 u32 vf_if_handle[BE_MAX_VF];
288 u32 vf_pmac_id[BE_MAX_VF];
289 u8 base_eq_id;
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290};
291
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292#define be_physfn(adapter) (!adapter->pdev->is_virtfn)
293
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294/* BladeEngine Generation numbers */
295#define BE_GEN2 2
296#define BE_GEN3 3
297
0fc0b732 298extern const struct ethtool_ops be_ethtool_ops;
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299
300#define drvr_stats(adapter) (&adapter->stats.drvr_stats)
301
302#define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
303
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304#define PAGE_SHIFT_4K 12
305#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
306
307/* Returns number of pages spanned by the data starting at the given addr */
308#define PAGES_4K_SPANNED(_address, size) \
309 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
310 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
311
312/* Byte offset into the page corresponding to given address */
313#define OFFSET_IN_PAGE(addr) \
314 ((size_t)(addr) & (PAGE_SIZE_4K-1))
315
316/* Returns bit offset within a DWORD of a bitfield */
317#define AMAP_BIT_OFFSET(_struct, field) \
318 (((size_t)&(((_struct *)0)->field))%32)
319
320/* Returns the bit mask of the field that is NOT shifted into location. */
321static inline u32 amap_mask(u32 bitsize)
322{
323 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
324}
325
326static inline void
327amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
328{
329 u32 *dw = (u32 *) ptr + dw_offset;
330 *dw &= ~(mask << offset);
331 *dw |= (mask & value) << offset;
332}
333
334#define AMAP_SET_BITS(_struct, field, ptr, val) \
335 amap_set(ptr, \
336 offsetof(_struct, field)/32, \
337 amap_mask(sizeof(((_struct *)0)->field)), \
338 AMAP_BIT_OFFSET(_struct, field), \
339 val)
340
341static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
342{
343 u32 *dw = (u32 *) ptr;
344 return mask & (*(dw + dw_offset) >> offset);
345}
346
347#define AMAP_GET_BITS(_struct, field, ptr) \
348 amap_get(ptr, \
349 offsetof(_struct, field)/32, \
350 amap_mask(sizeof(((_struct *)0)->field)), \
351 AMAP_BIT_OFFSET(_struct, field))
352
353#define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
354#define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
355static inline void swap_dws(void *wrb, int len)
356{
357#ifdef __BIG_ENDIAN
358 u32 *dw = wrb;
359 BUG_ON(len % 4);
360 do {
361 *dw = cpu_to_le32(*dw);
362 dw++;
363 len -= 4;
364 } while (len);
365#endif /* __BIG_ENDIAN */
366}
367
368static inline u8 is_tcp_pkt(struct sk_buff *skb)
369{
370 u8 val = 0;
371
372 if (ip_hdr(skb)->version == 4)
373 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
374 else if (ip_hdr(skb)->version == 6)
375 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
376
377 return val;
378}
379
380static inline u8 is_udp_pkt(struct sk_buff *skb)
381{
382 u8 val = 0;
383
384 if (ip_hdr(skb)->version == 4)
385 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
386 else if (ip_hdr(skb)->version == 6)
387 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
388
389 return val;
390}
391
8788fdc2 392extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
5fb379ee 393 u16 num_popped);
8788fdc2 394extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
b31c50a7 395extern void netdev_stats_update(struct be_adapter *adapter);
84517482 396extern int be_load_fw(struct be_adapter *adapter, u8 *func);
6b7c5b94 397#endif /* BE_H */