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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>
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31
32#include "be_hw.h"
33
5be93b9a 34#define DRV_VER "2.0.400"
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35#define DRV_NAME "be2net"
36#define BE_NAME "ServerEngines BladeEngine2 10Gbps NIC"
c4ca2374 37#define OC_NAME "Emulex OneConnect 10Gbps NIC"
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38#define DRV_DESC BE_NAME "Driver"
39
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40#define BE_VENDOR_ID 0x19a2
41#define BE_DEVICE_ID1 0x211
42#define OC_DEVICE_ID1 0x700
43#define OC_DEVICE_ID2 0x701
44
45static inline char *nic_name(struct pci_dev *pdev)
46{
47 if (pdev->device == OC_DEVICE_ID1 || pdev->device == OC_DEVICE_ID2)
48 return OC_NAME;
49 else
50 return BE_NAME;
51}
52
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53/* Number of bytes of an RX frame that are copied to skb->data */
54#define BE_HDR_LEN 64
55#define BE_MAX_JUMBO_FRAME_SIZE 9018
56#define BE_MIN_MTU 256
57
58#define BE_NUM_VLANS_SUPPORTED 64
59#define BE_MAX_EQD 96
60#define BE_MAX_TX_FRAG_COUNT 30
61
62#define EVNT_Q_LEN 1024
63#define TX_Q_LEN 2048
64#define TX_CQ_LEN 1024
65#define RX_Q_LEN 1024 /* Does not support any other value */
66#define RX_CQ_LEN 1024
5fb379ee 67#define MCC_Q_LEN 128 /* total size not to exceed 8 pages */
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68#define MCC_CQ_LEN 256
69
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)
73
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74#define FW_VER_LEN 32
75
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76struct be_dma_mem {
77 void *va;
78 dma_addr_t dma;
79 u32 size;
80};
81
82struct be_queue_info {
83 struct be_dma_mem dma_mem;
84 u16 len;
85 u16 entry_size; /* Size of an element in the queue */
86 u16 id;
87 u16 tail, head;
88 bool created;
89 atomic_t used; /* Number of valid elements in the queue */
90};
91
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92static inline u32 MODULO(u16 val, u16 limit)
93{
94 BUG_ON(limit & (limit - 1));
95 return val & (limit - 1);
96}
97
98static inline void index_adv(u16 *index, u16 val, u16 limit)
99{
100 *index = MODULO((*index + val), limit);
101}
102
103static inline void index_inc(u16 *index, u16 limit)
104{
105 *index = MODULO((*index + 1), limit);
106}
107
108static inline void *queue_head_node(struct be_queue_info *q)
109{
110 return q->dma_mem.va + q->head * q->entry_size;
111}
112
113static inline void *queue_tail_node(struct be_queue_info *q)
114{
115 return q->dma_mem.va + q->tail * q->entry_size;
116}
117
118static inline void queue_head_inc(struct be_queue_info *q)
119{
120 index_inc(&q->head, q->len);
121}
122
123static inline void queue_tail_inc(struct be_queue_info *q)
124{
125 index_inc(&q->tail, q->len);
126}
127
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128struct be_eq_obj {
129 struct be_queue_info q;
130 char desc[32];
131
132 /* Adaptive interrupt coalescing (AIC) info */
133 bool enable_aic;
134 u16 min_eqd; /* in usecs */
135 u16 max_eqd; /* in usecs */
136 u16 cur_eqd; /* in usecs */
137
138 struct napi_struct napi;
139};
140
141struct be_mcc_obj {
142 struct be_queue_info q;
143 struct be_queue_info cq;
144};
145
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146struct be_drvr_stats {
147 u32 be_tx_reqs; /* number of TX requests initiated */
148 u32 be_tx_stops; /* number of times TX Q was stopped */
149 u32 be_fwd_reqs; /* number of send reqs through forwarding i/f */
150 u32 be_tx_wrbs; /* number of tx WRBs used */
151 u32 be_tx_events; /* number of tx completion events */
152 u32 be_tx_compl; /* number of tx completion entries processed */
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153 ulong be_tx_jiffies;
154 u64 be_tx_bytes;
155 u64 be_tx_bytes_prev;
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156 u32 be_tx_rate;
157
158 u32 cache_barrier[16];
159
160 u32 be_ethrx_post_fail;/* number of ethrx buffer alloc failures */
161 u32 be_polls; /* number of times NAPI called poll function */
162 u32 be_rx_events; /* number of ucast rx completion events */
163 u32 be_rx_compl; /* number of rx completion entries processed */
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164 ulong be_rx_jiffies;
165 u64 be_rx_bytes;
166 u64 be_rx_bytes_prev;
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167 u32 be_rx_rate;
168 /* number of non ether type II frames dropped where
169 * frame len > length field of Mac Hdr */
170 u32 be_802_3_dropped_frames;
171 /* number of non ether type II frames malformed where
172 * in frame len < length field of Mac Hdr */
173 u32 be_802_3_malformed_frames;
174 u32 be_rxcp_err; /* Num rx completion entries w/ err set. */
175 ulong rx_fps_jiffies; /* jiffies at last FPS calc */
176 u32 be_rx_frags;
177 u32 be_prev_rx_frags;
178 u32 be_rx_fps; /* Rx frags per second */
179};
180
181struct be_stats_obj {
182 struct be_drvr_stats drvr_stats;
183 struct net_device_stats net_stats;
184 struct be_dma_mem cmd;
185};
186
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187struct be_tx_obj {
188 struct be_queue_info q;
189 struct be_queue_info cq;
190 /* Remember the skbs that were transmitted */
191 struct sk_buff *sent_skb_list[TX_Q_LEN];
192};
193
194/* Struct to remember the pages posted for rx frags */
195struct be_rx_page_info {
196 struct page *page;
197 dma_addr_t bus;
198 u16 page_offset;
199 bool last_page_user;
200};
201
202struct be_rx_obj {
203 struct be_queue_info q;
204 struct be_queue_info cq;
205 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
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206};
207
208#define BE_NUM_MSIX_VECTORS 2 /* 1 each for Tx and Rx */
209struct be_adapter {
210 struct pci_dev *pdev;
211 struct net_device *netdev;
212
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213 u8 __iomem *csr;
214 u8 __iomem *db; /* Door Bell */
215 u8 __iomem *pcicfg; /* PCI config space */
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216
217 spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
218 struct be_dma_mem mbox_mem;
219 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
220 * is stored for freeing purpose */
221 struct be_dma_mem mbox_mem_alloced;
222
223 struct be_mcc_obj mcc_obj;
224 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
225 spinlock_t mcc_cq_lock;
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226
227 struct msix_entry msix_entries[BE_NUM_MSIX_VECTORS];
228 bool msix_enabled;
229 bool isr_registered;
230
231 /* TX Rings */
232 struct be_eq_obj tx_eq;
233 struct be_tx_obj tx_obj;
234
235 u32 cache_line_break[8];
236
237 /* Rx rings */
238 struct be_eq_obj rx_eq;
239 struct be_rx_obj rx_obj;
240 u32 big_page_size; /* Compounded page size shared by rx wrbs */
ea1dae11 241 bool rx_post_starved; /* Zero rx frags have been posted to BE */
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242
243 struct vlan_group *vlan_grp;
244 u16 num_vlans;
245 u8 vlan_tag[VLAN_GROUP_ARRAY_LEN];
246
247 struct be_stats_obj stats;
248 /* Work queue used to perform periodic tasks like getting statistics */
249 struct delayed_work work;
250
251 /* Ethtool knobs and info */
252 bool rx_csum; /* BE card must perform rx-checksumming */
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253 char fw_ver[FW_VER_LEN];
254 u32 if_handle; /* Used to configure filtering */
255 u32 pmac_id; /* MAC addr handle used by BE card */
256
a8f447bd 257 bool link_up;
6b7c5b94 258 u32 port_num;
24307eef 259 bool promiscuous;
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260};
261
262extern struct ethtool_ops be_ethtool_ops;
263
264#define drvr_stats(adapter) (&adapter->stats.drvr_stats)
265
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266static inline unsigned int be_pci_func(struct be_adapter *adapter)
267{
268 return PCI_FUNC(adapter->pdev->devfn);
269}
270
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271#define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
272
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273#define PAGE_SHIFT_4K 12
274#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
275
276/* Returns number of pages spanned by the data starting at the given addr */
277#define PAGES_4K_SPANNED(_address, size) \
278 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
279 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
280
281/* Byte offset into the page corresponding to given address */
282#define OFFSET_IN_PAGE(addr) \
283 ((size_t)(addr) & (PAGE_SIZE_4K-1))
284
285/* Returns bit offset within a DWORD of a bitfield */
286#define AMAP_BIT_OFFSET(_struct, field) \
287 (((size_t)&(((_struct *)0)->field))%32)
288
289/* Returns the bit mask of the field that is NOT shifted into location. */
290static inline u32 amap_mask(u32 bitsize)
291{
292 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
293}
294
295static inline void
296amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
297{
298 u32 *dw = (u32 *) ptr + dw_offset;
299 *dw &= ~(mask << offset);
300 *dw |= (mask & value) << offset;
301}
302
303#define AMAP_SET_BITS(_struct, field, ptr, val) \
304 amap_set(ptr, \
305 offsetof(_struct, field)/32, \
306 amap_mask(sizeof(((_struct *)0)->field)), \
307 AMAP_BIT_OFFSET(_struct, field), \
308 val)
309
310static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
311{
312 u32 *dw = (u32 *) ptr;
313 return mask & (*(dw + dw_offset) >> offset);
314}
315
316#define AMAP_GET_BITS(_struct, field, ptr) \
317 amap_get(ptr, \
318 offsetof(_struct, field)/32, \
319 amap_mask(sizeof(((_struct *)0)->field)), \
320 AMAP_BIT_OFFSET(_struct, field))
321
322#define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
323#define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
324static inline void swap_dws(void *wrb, int len)
325{
326#ifdef __BIG_ENDIAN
327 u32 *dw = wrb;
328 BUG_ON(len % 4);
329 do {
330 *dw = cpu_to_le32(*dw);
331 dw++;
332 len -= 4;
333 } while (len);
334#endif /* __BIG_ENDIAN */
335}
336
337static inline u8 is_tcp_pkt(struct sk_buff *skb)
338{
339 u8 val = 0;
340
341 if (ip_hdr(skb)->version == 4)
342 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
343 else if (ip_hdr(skb)->version == 6)
344 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
345
346 return val;
347}
348
349static inline u8 is_udp_pkt(struct sk_buff *skb)
350{
351 u8 val = 0;
352
353 if (ip_hdr(skb)->version == 4)
354 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
355 else if (ip_hdr(skb)->version == 6)
356 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
357
358 return val;
359}
360
8788fdc2 361extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
5fb379ee 362 u16 num_popped);
8788fdc2 363extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
6b7c5b94 364#endif /* BE_H */