aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/benet/be.h
blob: 9fd8e5ecd5d75dcd81cf30827fd2257ba50d1284 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
/*
 * Copyright (C) 2005 - 2009 ServerEngines
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.  The full GNU General
 * Public License is included in this distribution in the file called COPYING.
 *
 * Contact Information:
 * linux-drivers@serverengines.com
 *
 * ServerEngines
 * 209 N. Fair Oaks Ave
 * Sunnyvale, CA 94085
 */

#ifndef BE_H
#define BE_H

#include <linux/pci.h>
#include <linux/etherdevice.h>
#include <linux/version.h>
#include <linux/delay.h>
#include <net/tcp.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <linux/if_vlan.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/firmware.h>

#include "be_hw.h"

#define DRV_VER			"2.101.346u"
#define DRV_NAME		"be2net"
#define BE_NAME			"ServerEngines BladeEngine2 10Gbps NIC"
#define BE3_NAME		"ServerEngines BladeEngine3 10Gbps NIC"
#define OC_NAME			"Emulex OneConnect 10Gbps NIC"
#define OC_NAME1		"Emulex OneConnect 10Gbps NIC (be3)"
#define DRV_DESC		BE_NAME "Driver"

#define BE_VENDOR_ID 		0x19a2
#define BE_DEVICE_ID1		0x211
#define BE_DEVICE_ID2		0x221
#define OC_DEVICE_ID1		0x700
#define OC_DEVICE_ID2		0x701
#define OC_DEVICE_ID3		0x710

static inline char *nic_name(struct pci_dev *pdev)
{
	switch (pdev->device) {
	case OC_DEVICE_ID1:
	case OC_DEVICE_ID2:
		return OC_NAME;
	case OC_DEVICE_ID3:
		return OC_NAME1;
	case BE_DEVICE_ID2:
		return BE3_NAME;
	default:
		return BE_NAME;
	}
}

/* Number of bytes of an RX frame that are copied to skb->data */
#define BE_HDR_LEN 		64
#define BE_MAX_JUMBO_FRAME_SIZE	9018
#define BE_MIN_MTU		256

#define BE_NUM_VLANS_SUPPORTED	64
#define BE_MAX_EQD		96
#define	BE_MAX_TX_FRAG_COUNT	30

#define EVNT_Q_LEN		1024
#define TX_Q_LEN		2048
#define TX_CQ_LEN		1024
#define RX_Q_LEN		1024	/* Does not support any other value */
#define RX_CQ_LEN		1024
#define MCC_Q_LEN		128	/* total size not to exceed 8 pages */
#define MCC_CQ_LEN		256

#define BE_NAPI_WEIGHT		64
#define MAX_RX_POST 		BE_NAPI_WEIGHT /* Frags posted at a time */
#define RX_FRAGS_REFILL_WM	(RX_Q_LEN - MAX_RX_POST)

#define FW_VER_LEN		32

struct be_dma_mem {
	void *va;
	dma_addr_t dma;
	u32 size;
};

struct be_queue_info {
	struct be_dma_mem dma_mem;
	u16 len;
	u16 entry_size;	/* Size of an element in the queue */
	u16 id;
	u16 tail, head;
	bool created;
	atomic_t used;	/* Number of valid elements in the queue */
};

static inline u32 MODULO(u16 val, u16 limit)
{
	BUG_ON(limit & (limit - 1));
	return val & (limit - 1);
}

static inline void index_adv(u16 *index, u16 val, u16 limit)
{
	*index = MODULO((*index + val), limit);
}

static inline void index_inc(u16 *index, u16 limit)
{
	*index = MODULO((*index + 1), limit);
}

static inline void *queue_head_node(struct be_queue_info *q)
{
	return q->dma_mem.va + q->head * q->entry_size;
}

static inline void *queue_tail_node(struct be_queue_info *q)
{
	return q->dma_mem.va + q->tail * q->entry_size;
}

static inline void queue_head_inc(struct be_queue_info *q)
{
	index_inc(&q->head, q->len);
}

static inline void queue_tail_inc(struct be_queue_info *q)
{
	index_inc(&q->tail, q->len);
}

struct be_eq_obj {
	struct be_queue_info q;
	char desc[32];

	/* Adaptive interrupt coalescing (AIC) info */
	bool enable_aic;
	u16 min_eqd;		/* in usecs */
	u16 max_eqd;		/* in usecs */
	u16 cur_eqd;		/* in usecs */

	struct napi_struct napi;
};

struct be_mcc_obj {
	struct be_queue_info q;
	struct be_queue_info cq;
};

struct be_drvr_stats {
	u32 be_tx_reqs;		/* number of TX requests initiated */
	u32 be_tx_stops;	/* number of times TX Q was stopped */
	u32 be_fwd_reqs;	/* number of send reqs through forwarding i/f */
	u32 be_tx_wrbs;		/* number of tx WRBs used */
	u32 be_tx_events;	/* number of tx completion events  */
	u32 be_tx_compl;	/* number of tx completion entries processed */
	ulong be_tx_jiffies;
	u64 be_tx_bytes;
	u64 be_tx_bytes_prev;
	u32 be_tx_rate;

	u32 cache_barrier[16];

	u32 be_ethrx_post_fail;/* number of ethrx buffer alloc failures */
	u32 be_rx_polls;	/* number of times NAPI called poll function */
	u32 be_rx_events;	/* number of ucast rx completion events  */
	u32 be_rx_compl;	/* number of rx completion entries processed */
	ulong be_rx_jiffies;
	u64 be_rx_bytes;
	u64 be_rx_bytes_prev;
	u32 be_rx_rate;
	/* number of non ether type II frames dropped where
	 * frame len > length field of Mac Hdr */
	u32 be_802_3_dropped_frames;
	/* number of non ether type II frames malformed where
	 * in frame len < length field of Mac Hdr */
	u32 be_802_3_malformed_frames;
	u32 be_rxcp_err;	/* Num rx completion entries w/ err set. */
	ulong rx_fps_jiffies;	/* jiffies at last FPS calc */
	u32 be_rx_frags;
	u32 be_prev_rx_frags;
	u32 be_rx_fps;		/* Rx frags per second */
};

struct be_stats_obj {
	struct be_drvr_stats drvr_stats;
	struct be_dma_mem cmd;
};

struct be_tx_obj {
	struct be_queue_info q;
	struct be_queue_info cq;
	/* Remember the skbs that were transmitted */
	struct sk_buff *sent_skb_list[TX_Q_LEN];
};

/* Struct to remember the pages posted for rx frags */
struct be_rx_page_info {
	struct page *page;
	dma_addr_t bus;
	u16 page_offset;
	bool last_page_user;
};

struct be_rx_obj {
	struct be_queue_info q;
	struct be_queue_info cq;
	struct be_rx_page_info page_info_tbl[RX_Q_LEN];
};

#define BE_NUM_MSIX_VECTORS		2	/* 1 each for Tx and Rx */
struct be_adapter {
	struct pci_dev *pdev;
	struct net_device *netdev;

	u8 __iomem *csr;
	u8 __iomem *db;		/* Door Bell */
	u8 __iomem *pcicfg;	/* PCI config space */

	spinlock_t mbox_lock;	/* For serializing mbox cmds to BE card */
	struct be_dma_mem mbox_mem;
	/* Mbox mem is adjusted to align to 16 bytes. The allocated addr
	 * is stored for freeing purpose */
	struct be_dma_mem mbox_mem_alloced;

	struct be_mcc_obj mcc_obj;
	spinlock_t mcc_lock;	/* For serializing mcc cmds to BE card */
	spinlock_t mcc_cq_lock;

	struct msix_entry msix_entries[BE_NUM_MSIX_VECTORS];
	bool msix_enabled;
	bool isr_registered;

	/* TX Rings */
	struct be_eq_obj tx_eq;
	struct be_tx_obj tx_obj;

	u32 cache_line_break[8];

	/* Rx rings */
	struct be_eq_obj rx_eq;
	struct be_rx_obj rx_obj;
	u32 big_page_size;	/* Compounded page size shared by rx wrbs */
	bool rx_post_starved;	/* Zero rx frags have been posted to BE */

	struct vlan_group *vlan_grp;
	u16 num_vlans;
	u8 vlan_tag[VLAN_GROUP_ARRAY_LEN];
	struct be_dma_mem mc_cmd_mem;

	struct be_stats_obj stats;
	/* Work queue used to perform periodic tasks like getting statistics */
	struct delayed_work work;

	/* Ethtool knobs and info */
	bool rx_csum; 		/* BE card must perform rx-checksumming */
	char fw_ver[FW_VER_LEN];
	u32 if_handle;		/* Used to configure filtering */
	u32 pmac_id;		/* MAC addr handle used by BE card */

	bool link_up;
	u32 port_num;
	bool promiscuous;
	bool wol;
	u32 cap;
	u32 rx_fc;		/* Rx flow control */
	u32 tx_fc;		/* Tx flow control */
	int link_speed;
	u8 port_type;
	u8 transceiver;
};

extern const struct ethtool_ops be_ethtool_ops;

#define drvr_stats(adapter)		(&adapter->stats.drvr_stats)

static inline unsigned int be_pci_func(struct be_adapter *adapter)
{
	return PCI_FUNC(adapter->pdev->devfn);
}

#define BE_SET_NETDEV_OPS(netdev, ops)	(netdev->netdev_ops = ops)

#define PAGE_SHIFT_4K		12
#define PAGE_SIZE_4K		(1 << PAGE_SHIFT_4K)

/* Returns number of pages spanned by the data starting at the given addr */
#define PAGES_4K_SPANNED(_address, size) 				\
		((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + 	\
			(size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))

/* Byte offset into the page corresponding to given address */
#define OFFSET_IN_PAGE(addr)						\
		 ((size_t)(addr) & (PAGE_SIZE_4K-1))

/* Returns bit offset within a DWORD of a bitfield */
#define AMAP_BIT_OFFSET(_struct, field)  				\
		(((size_t)&(((_struct *)0)->field))%32)

/* Returns the bit mask of the field that is NOT shifted into location. */
static inline u32 amap_mask(u32 bitsize)
{
	return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
}

static inline void
amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
{
	u32 *dw = (u32 *) ptr + dw_offset;
	*dw &= ~(mask << offset);
	*dw |= (mask & value) << offset;
}

#define AMAP_SET_BITS(_struct, field, ptr, val)				\
		amap_set(ptr,						\
			offsetof(_struct, field)/32,			\
			amap_mask(sizeof(((_struct *)0)->field)),	\
			AMAP_BIT_OFFSET(_struct, field),		\
			val)

static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
{
	u32 *dw = (u32 *) ptr;
	return mask & (*(dw + dw_offset) >> offset);
}

#define AMAP_GET_BITS(_struct, field, ptr)				\
		amap_get(ptr,						\
			offsetof(_struct, field)/32,			\
			amap_mask(sizeof(((_struct *)0)->field)),	\
			AMAP_BIT_OFFSET(_struct, field))

#define be_dws_cpu_to_le(wrb, len)	swap_dws(wrb, len)
#define be_dws_le_to_cpu(wrb, len)	swap_dws(wrb, len)
static inline void swap_dws(void *wrb, int len)
{
#ifdef __BIG_ENDIAN
	u32 *dw = wrb;
	BUG_ON(len % 4);
	do {
		*dw = cpu_to_le32(*dw);
		dw++;
		len -= 4;
	} while (len);
#endif				/* __BIG_ENDIAN */
}

static inline u8 is_tcp_pkt(struct sk_buff *skb)
{
	u8 val = 0;

	if (ip_hdr(skb)->version == 4)
		val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
	else if (ip_hdr(skb)->version == 6)
		val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);

	return val;
}

static inline u8 is_udp_pkt(struct sk_buff *skb)
{
	u8 val = 0;

	if (ip_hdr(skb)->version == 4)
		val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
	else if (ip_hdr(skb)->version == 6)
		val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);

	return val;
}

extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
		u16 num_popped);
extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
extern void netdev_stats_update(struct be_adapter *adapter);
extern int be_load_fw(struct be_adapter *adapter, u8 *func);
#endif				/* BE_H */