summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/brocade/bna/bnad.h
blob: 55824d92699f43cb390c860ce3295f9275f858f6 (plain)
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
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
/*
 * Linux network driver for Brocade Converged Network Adapter.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License (GPL) Version 2 as
 * published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */
/*
 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
 * All rights reserved
 * www.brocade.com
 */
#ifndef __BNAD_H__
#define __BNAD_H__

#include <linux/rtnetlink.h>
#include <linux/workqueue.h>
#include <linux/ipv6.h>
#include <linux/etherdevice.h>
#include <linux/mutex.h>
#include <linux/firmware.h>
#include <linux/if_vlan.h>

/* Fix for IA64 */
#include <asm/checksum.h>
#include <net/ip6_checksum.h>

#include <net/ip.h>
#include <net/tcp.h>

#include "bna.h"

#define BNAD_TXQ_DEPTH		2048
#define BNAD_RXQ_DEPTH		2048

#define BNAD_MAX_TX		1
#define BNAD_MAX_TXQ_PER_TX	8	/* 8 priority queues */
#define BNAD_TXQ_NUM		1

#define BNAD_MAX_RX		1
#define BNAD_MAX_RXP_PER_RX	16
#define BNAD_MAX_RXQ_PER_RXP	2

/*
 * Control structure pointed to ccb->ctrl, which
 * determines the NAPI / LRO behavior CCB
 * There is 1:1 corres. between ccb & ctrl
 */
struct bnad_rx_ctrl {
	struct bna_ccb *ccb;
	struct bnad *bnad;
	unsigned long  flags;
	struct napi_struct	napi;
	u64		rx_intr_ctr;
	u64		rx_poll_ctr;
	u64		rx_schedule;
	u64		rx_keep_poll;
	u64		rx_complete;
};

#define BNAD_RXMODE_PROMISC_DEFAULT	BNA_RXMODE_PROMISC

/*
 * GLOBAL #defines (CONSTANTS)
 */
#define BNAD_NAME			"bna"
#define BNAD_NAME_LEN			64

#define BNAD_VERSION			"3.0.2.2"

#define BNAD_MAILBOX_MSIX_INDEX		0
#define BNAD_MAILBOX_MSIX_VECTORS	1
#define BNAD_INTX_TX_IB_BITMASK		0x1
#define BNAD_INTX_RX_IB_BITMASK		0x2

#define BNAD_STATS_TIMER_FREQ		1000	/* in msecs */
#define BNAD_DIM_TIMER_FREQ		1000	/* in msecs */

#define BNAD_IOCETH_TIMEOUT	     10000

#define BNAD_MAX_Q_DEPTH		0x10000
#define BNAD_MIN_Q_DEPTH		0x200

#define BNAD_MAX_RXQ_DEPTH		(BNAD_MAX_Q_DEPTH / bnad_rxqs_per_cq)
/* keeping MAX TX and RX Q depth equal */
#define BNAD_MAX_TXQ_DEPTH		BNAD_MAX_RXQ_DEPTH

#define BNAD_JUMBO_MTU			9000

#define BNAD_NETIF_WAKE_THRESHOLD	8

#define BNAD_RXQ_REFILL_THRESHOLD_SHIFT	3

/* Bit positions for tcb->flags */
#define BNAD_TXQ_FREE_SENT		0
#define BNAD_TXQ_TX_STARTED		1

/* Bit positions for rcb->flags */
#define BNAD_RXQ_REFILL			0
#define BNAD_RXQ_STARTED		1
#define BNAD_RXQ_POST_OK		2

/* Resource limits */
#define BNAD_NUM_TXQ			(bnad->num_tx * bnad->num_txq_per_tx)
#define BNAD_NUM_RXP			(bnad->num_rx * bnad->num_rxp_per_rx)

/*
 * DATA STRUCTURES
 */

/* enums */
enum bnad_intr_source {
	BNAD_INTR_TX		= 1,
	BNAD_INTR_RX		= 2
};

enum bnad_link_state {
	BNAD_LS_DOWN		= 0,
	BNAD_LS_UP		= 1
};

struct bnad_iocmd_comp {
	struct bnad		*bnad;
	struct completion	comp;
	int			comp_status;
};

struct bnad_completion {
	struct completion	ioc_comp;
	struct completion	ucast_comp;
	struct completion	mcast_comp;
	struct completion	tx_comp;
	struct completion	rx_comp;
	struct completion	stats_comp;
	struct completion	enet_comp;
	struct completion	mtu_comp;

	u8			ioc_comp_status;
	u8			ucast_comp_status;
	u8			mcast_comp_status;
	u8			tx_comp_status;
	u8			rx_comp_status;
	u8			stats_comp_status;
	u8			port_comp_status;
	u8			mtu_comp_status;
};

/* Tx Rx Control Stats */
struct bnad_drv_stats {
	u64		netif_queue_stop;
	u64		netif_queue_wakeup;
	u64		netif_queue_stopped;
	u64		tso4;
	u64		tso6;
	u64		tso_err;
	u64		tcpcsum_offload;
	u64		udpcsum_offload;
	u64		csum_help;
	u64		tx_skb_too_short;
	u64		tx_skb_stopping;
	u64		tx_skb_max_vectors;
	u64		tx_skb_mss_too_long;
	u64		tx_skb_tso_too_short;
	u64		tx_skb_tso_prepare;
	u64		tx_skb_non_tso_too_long;
	u64		tx_skb_tcp_hdr;
	u64		tx_skb_udp_hdr;
	u64		tx_skb_csum_err;
	u64		tx_skb_headlen_too_long;
	u64		tx_skb_headlen_zero;
	u64		tx_skb_frag_zero;
	u64		tx_skb_len_mismatch;

	u64		hw_stats_updates;
	u64		netif_rx_dropped;

	u64		link_toggle;
	u64		cee_toggle;

	u64		rxp_info_alloc_failed;
	u64		mbox_intr_disabled;
	u64		mbox_intr_enabled;
	u64		tx_unmap_q_alloc_failed;
	u64		rx_unmap_q_alloc_failed;

	u64		rxbuf_alloc_failed;
};

/* Complete driver stats */
struct bnad_stats {
	struct bnad_drv_stats drv_stats;
	struct bna_stats *bna_stats;
};

/* Tx / Rx Resources */
struct bnad_tx_res_info {
	struct bna_res_info res_info[BNA_TX_RES_T_MAX];
};

struct bnad_rx_res_info {
	struct bna_res_info res_info[BNA_RX_RES_T_MAX];
};

struct bnad_tx_info {
	struct bna_tx *tx; /* 1:1 between tx_info & tx */
	struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX];
	u32 tx_id;
} ____cacheline_aligned;

struct bnad_rx_info {
	struct bna_rx *rx; /* 1:1 between rx_info & rx */

	struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXP_PER_RX];
	u32 rx_id;
} ____cacheline_aligned;

/* Unmap queues for Tx / Rx cleanup */
struct bnad_skb_unmap {
	struct sk_buff		*skb;
	DEFINE_DMA_UNMAP_ADDR(dma_addr);
};

struct bnad_unmap_q {
	u32		producer_index;
	u32		consumer_index;
	u32		q_depth;
	/* This should be the last one */
	struct bnad_skb_unmap unmap_array[1];
};

/* Bit mask values for bnad->cfg_flags */
#define	BNAD_CF_DIM_ENABLED		0x01	/* DIM */
#define	BNAD_CF_PROMISC			0x02
#define BNAD_CF_ALLMULTI		0x04
#define	BNAD_CF_MSIX			0x08	/* If in MSIx mode */

/* Defines for run_flags bit-mask */
/* Set, tested & cleared using xxx_bit() functions */
/* Values indicated bit positions */
#define BNAD_RF_CEE_RUNNING		0
#define BNAD_RF_MTU_SET		1
#define BNAD_RF_MBOX_IRQ_DISABLED	2
#define BNAD_RF_NETDEV_REGISTERED	3
#define BNAD_RF_DIM_TIMER_RUNNING	4
#define BNAD_RF_STATS_TIMER_RUNNING	5
#define BNAD_RF_TX_PRIO_SET		6


/* Define for Fast Path flags */
/* Defined as bit positions */
#define BNAD_FP_IN_RX_PATH	      0

struct bnad {
	struct net_device	*netdev;
	u32			id;
	struct list_head	list_entry;

	/* Data path */
	struct bnad_tx_info tx_info[BNAD_MAX_TX];
	struct bnad_rx_info rx_info[BNAD_MAX_RX];

	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
	/*
	 * These q numbers are global only because
	 * they are used to calculate MSIx vectors.
	 * Actually the exact # of queues are per Tx/Rx
	 * object.
	 */
	u32		num_tx;
	u32		num_rx;
	u32		num_txq_per_tx;
	u32		num_rxp_per_rx;

	u32		txq_depth;
	u32		rxq_depth;

	u8			tx_coalescing_timeo;
	u8			rx_coalescing_timeo;

	struct bna_rx_config rx_config[BNAD_MAX_RX];
	struct bna_tx_config tx_config[BNAD_MAX_TX];

	void __iomem		*bar0;	/* BAR0 address */

	struct bna bna;

	u32		cfg_flags;
	unsigned long		run_flags;

	struct pci_dev		*pcidev;
	u64		mmio_start;
	u64		mmio_len;

	u32		msix_num;
	struct msix_entry	*msix_table;

	struct mutex		conf_mutex;
	spinlock_t		bna_lock ____cacheline_aligned;

	/* Timers */
	struct timer_list	ioc_timer;
	struct timer_list	dim_timer;
	struct timer_list	stats_timer;

	/* Control path resources, memory & irq */
	struct bna_res_info res_info[BNA_RES_T_MAX];
	struct bna_res_info mod_res_info[BNA_MOD_RES_T_MAX];
	struct bnad_tx_res_info tx_res_info[BNAD_MAX_TX];
	struct bnad_rx_res_info rx_res_info[BNAD_MAX_RX];

	struct bnad_completion bnad_completions;

	/* Burnt in MAC address */
	mac_t			perm_addr;

	struct tasklet_struct	tx_free_tasklet;

	/* Statistics */
	struct bnad_stats stats;

	struct bnad_diag *diag;

	char			adapter_name[BNAD_NAME_LEN];
	char			port_name[BNAD_NAME_LEN];
	char			mbox_irq_name[BNAD_NAME_LEN];

	/* debugfs specific data */
	char	*regdata;
	u32	reglen;
	struct dentry *bnad_dentry_files[5];
	struct dentry *port_debugfs_root;
};

struct bnad_drvinfo {
	struct bfa_ioc_attr  ioc_attr;
	struct bfa_cee_attr  cee_attr;
	struct bfa_flash_attr flash_attr;
	u32	cee_status;
	u32	flash_status;
};

/*
 * EXTERN VARIABLES
 */
extern const struct firmware *bfi_fw;
extern u32		bnad_rxqs_per_cq;

/*
 * EXTERN PROTOTYPES
 */
extern u32 *cna_get_firmware_buf(struct pci_dev *pdev);
/* Netdev entry point prototypes */
extern void bnad_set_rx_mode(struct net_device *netdev);
extern struct net_device_stats *bnad_get_netdev_stats(
				struct net_device *netdev);
extern int bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr);
extern int bnad_enable_default_bcast(struct bnad *bnad);
extern void bnad_restore_vlans(struct bnad *bnad, u32 rx_id);
extern void bnad_set_ethtool_ops(struct net_device *netdev);
extern void bnad_cb_completion(void *arg, enum bfa_status status);

/* Configuration & setup */
extern void bnad_tx_coalescing_timeo_set(struct bnad *bnad);
extern void bnad_rx_coalescing_timeo_set(struct bnad *bnad);

extern int bnad_setup_rx(struct bnad *bnad, u32 rx_id);
extern int bnad_setup_tx(struct bnad *bnad, u32 tx_id);
extern void bnad_cleanup_tx(struct bnad *bnad, u32 tx_id);
extern void bnad_cleanup_rx(struct bnad *bnad, u32 rx_id);

/* Timer start/stop protos */
extern void bnad_dim_timer_start(struct bnad *bnad);

/* Statistics */
extern void bnad_netdev_qstats_fill(struct bnad *bnad,
		struct rtnl_link_stats64 *stats);
extern void bnad_netdev_hwstats_fill(struct bnad *bnad,
		struct rtnl_link_stats64 *stats);

/* Debugfs */
void	bnad_debugfs_init(struct bnad *bnad);
void	bnad_debugfs_uninit(struct bnad *bnad);

/**
 * MACROS
 */
/* To set & get the stats counters */
#define BNAD_UPDATE_CTR(_bnad, _ctr)				\
				(((_bnad)->stats.drv_stats._ctr)++)

#define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr)

#define bnad_enable_rx_irq_unsafe(_ccb)			\
{							\
	if (likely(test_bit(BNAD_RXQ_STARTED, &(_ccb)->rcb[0]->flags))) {\
		bna_ib_coalescing_timer_set((_ccb)->i_dbell,	\
			(_ccb)->rx_coalescing_timeo);		\
		bna_ib_ack((_ccb)->i_dbell, 0);			\
	}							\
}

#endif /* __BNAD_H__ */
OpenPOWER on IntegriCloud