summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/neterion/vxge/vxge-main.h
blob: 36ca40f8f2496b749069ef76f9aea92b177c65c7 (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
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
/******************************************************************************
 * This software may be used and distributed according to the terms of
 * the GNU General Public License (GPL), incorporated herein by reference.
 * Drivers based on or derived from this code fall under the GPL and must
 * retain the authorship, copyright and license notice.  This file is not
 * a complete program and may only be used when the entire operating
 * system is licensed under the GPL.
 * See the file COPYING in this distribution for more information.
 *
 * vxge-main.h: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
 *              Virtualized Server Adapter.
 * Copyright(c) 2002-2010 Exar Corp.
 ******************************************************************************/
#ifndef VXGE_MAIN_H
#define VXGE_MAIN_H

#include "vxge-traffic.h"
#include "vxge-config.h"
#include "vxge-version.h"
#include <linux/list.h>
#include <linux/bitops.h>
#include <linux/if_vlan.h>

#define VXGE_DRIVER_NAME		"vxge"
#define VXGE_DRIVER_VENDOR		"Neterion, Inc"
#define VXGE_DRIVER_FW_VERSION_MAJOR	1

#define DRV_VERSION	VXGE_VERSION_MAJOR"."VXGE_VERSION_MINOR"."\
	VXGE_VERSION_FIX"."VXGE_VERSION_BUILD"-"\
	VXGE_VERSION_FOR

#define PCI_DEVICE_ID_TITAN_WIN		0x5733
#define PCI_DEVICE_ID_TITAN_UNI		0x5833
#define VXGE_HW_TITAN1_PCI_REVISION	1
#define VXGE_HW_TITAN1A_PCI_REVISION	2

#define	VXGE_USE_DEFAULT		0xffffffff
#define VXGE_HW_VPATH_MSIX_ACTIVE	4
#define VXGE_ALARM_MSIX_ID		2
#define VXGE_HW_RXSYNC_FREQ_CNT		4
#define VXGE_LL_WATCH_DOG_TIMEOUT	(15 * HZ)
#define VXGE_LL_RX_COPY_THRESHOLD	256
#define VXGE_DEF_FIFO_LENGTH		84

#define NO_STEERING		0
#define PORT_STEERING		0x1
#define RTH_STEERING		0x2
#define RX_TOS_STEERING		0x3
#define RX_VLAN_STEERING	0x4
#define RTH_BUCKET_SIZE		4

#define	TX_PRIORITY_STEERING	1
#define	TX_VLAN_STEERING	2
#define	TX_PORT_STEERING	3
#define	TX_MULTIQ_STEERING	4

#define VXGE_HW_MAC_ADDR_LEARN_DEFAULT VXGE_HW_RTS_MAC_DISABLE

#define VXGE_TTI_BTIMER_VAL 250000

#define VXGE_TTI_LTIMER_VAL	1000
#define VXGE_T1A_TTI_LTIMER_VAL	80
#define VXGE_TTI_RTIMER_VAL	0
#define VXGE_TTI_RTIMER_ADAPT_VAL	10
#define VXGE_T1A_TTI_RTIMER_VAL	400
#define VXGE_RTI_BTIMER_VAL	250
#define VXGE_RTI_LTIMER_VAL	100
#define VXGE_RTI_RTIMER_VAL	0
#define VXGE_RTI_RTIMER_ADAPT_VAL	15
#define VXGE_FIFO_INDICATE_MAX_PKTS	VXGE_DEF_FIFO_LENGTH
#define VXGE_ISR_POLLING_CNT 	8
#define VXGE_MAX_CONFIG_DEV	0xFF
#define VXGE_EXEC_MODE_DISABLE	0
#define VXGE_EXEC_MODE_ENABLE	1
#define VXGE_MAX_CONFIG_PORT	1
#define VXGE_ALL_VID_DISABLE	0
#define VXGE_ALL_VID_ENABLE	1
#define VXGE_PAUSE_CTRL_DISABLE	0
#define VXGE_PAUSE_CTRL_ENABLE	1

#define TTI_TX_URANGE_A	5
#define TTI_TX_URANGE_B	15
#define TTI_TX_URANGE_C	40
#define TTI_TX_UFC_A	5
#define TTI_TX_UFC_B	40
#define TTI_TX_UFC_C	60
#define TTI_TX_UFC_D	100
#define TTI_T1A_TX_UFC_A	30
#define TTI_T1A_TX_UFC_B	80
/* Slope - (max_mtu - min_mtu)/(max_mtu_ufc - min_mtu_ufc) */
/* Slope - 93 */
/* 60 - 9k Mtu, 140 - 1.5k mtu */
#define TTI_T1A_TX_UFC_C(mtu)	(60 + ((VXGE_HW_MAX_MTU - mtu) / 93))

/* Slope - 37 */
/* 100 - 9k Mtu, 300 - 1.5k mtu */
#define TTI_T1A_TX_UFC_D(mtu)	(100 + ((VXGE_HW_MAX_MTU - mtu) / 37))


#define RTI_RX_URANGE_A		5
#define RTI_RX_URANGE_B		15
#define RTI_RX_URANGE_C		40
#define RTI_T1A_RX_URANGE_A	1
#define RTI_T1A_RX_URANGE_B	20
#define RTI_T1A_RX_URANGE_C	50
#define RTI_RX_UFC_A		1
#define RTI_RX_UFC_B		5
#define RTI_RX_UFC_C		10
#define RTI_RX_UFC_D		15
#define RTI_T1A_RX_UFC_B	20
#define RTI_T1A_RX_UFC_C	50
#define RTI_T1A_RX_UFC_D	60

/*
 * The interrupt rate is maintained at 3k per second with the moderation
 * parameters for most traffic but not all. This is the maximum interrupt
 * count allowed per function with INTA or per vector in the case of
 * MSI-X in a 10 millisecond time period. Enabled only for Titan 1A.
 */
#define VXGE_T1A_MAX_INTERRUPT_COUNT	100
#define VXGE_T1A_MAX_TX_INTERRUPT_COUNT	200

/* Milli secs timer period */
#define VXGE_TIMER_DELAY		10000

#define VXGE_LL_MAX_FRAME_SIZE(dev) ((dev)->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE)

#define is_sriov(function_mode) \
	((function_mode == VXGE_HW_FUNCTION_MODE_SRIOV) || \
	(function_mode == VXGE_HW_FUNCTION_MODE_SRIOV_8) || \
	(function_mode == VXGE_HW_FUNCTION_MODE_SRIOV_4))

enum vxge_reset_event {
	/* reset events */
	VXGE_LL_VPATH_RESET	= 0,
	VXGE_LL_DEVICE_RESET	= 1,
	VXGE_LL_FULL_RESET	= 2,
	VXGE_LL_START_RESET	= 3,
	VXGE_LL_COMPL_RESET	= 4
};
/* These flags represent the devices temporary state */
enum vxge_device_state_t {
__VXGE_STATE_RESET_CARD = 0,
__VXGE_STATE_CARD_UP
};

enum vxge_mac_addr_state {
	/* mac address states */
	VXGE_LL_MAC_ADDR_IN_LIST        = 0,
	VXGE_LL_MAC_ADDR_IN_DA_TABLE    = 1
};

struct vxge_drv_config {
	int config_dev_cnt;
	int total_dev_cnt;
	int g_no_cpus;
	unsigned int vpath_per_dev;
};

struct macInfo {
	unsigned char macaddr[ETH_ALEN];
	unsigned char macmask[ETH_ALEN];
	unsigned int vpath_no;
	enum vxge_mac_addr_state state;
};

struct vxge_config {
	int		tx_pause_enable;
	int		rx_pause_enable;

#define	NEW_NAPI_WEIGHT	64
	int		napi_weight;
	int		intr_type;
#define INTA	0
#define MSI	1
#define MSI_X	2

	int		addr_learn_en;

	u32		rth_steering:2,
			rth_algorithm:2,
			rth_hash_type_tcpipv4:1,
			rth_hash_type_ipv4:1,
			rth_hash_type_tcpipv6:1,
			rth_hash_type_ipv6:1,
			rth_hash_type_tcpipv6ex:1,
			rth_hash_type_ipv6ex:1,
			rth_bkt_sz:8;
	int		rth_jhash_golden_ratio;
	int		tx_steering_type;
	int 	fifo_indicate_max_pkts;
	struct vxge_hw_device_hw_info device_hw_info;
};

struct vxge_msix_entry {
	/* Mimicing the msix_entry struct of Kernel. */
	u16 vector;
	u16 entry;
	u16 in_use;
	void *arg;
};

/* Software Statistics */

struct vxge_sw_stats {

	/* Virtual Path */
	unsigned long vpaths_open;
	unsigned long vpath_open_fail;

	/* Misc. */
	unsigned long link_up;
	unsigned long link_down;
};

struct vxge_mac_addrs {
	struct list_head item;
	u64 macaddr;
	u64 macmask;
	enum vxge_mac_addr_state state;
};

struct vxgedev;

struct vxge_fifo_stats {
	struct u64_stats_sync	syncp;
	u64 tx_frms;
	u64 tx_bytes;

	unsigned long tx_errors;
	unsigned long txd_not_free;
	unsigned long txd_out_of_desc;
	unsigned long pci_map_fail;
};

struct vxge_fifo {
	struct net_device *ndev;
	struct pci_dev *pdev;
	struct __vxge_hw_fifo *handle;
	struct netdev_queue *txq;

	int tx_steering_type;
	int indicate_max_pkts;

	/* Adaptive interrupt moderation parameters used in T1A */
	unsigned long interrupt_count;
	unsigned long jiffies;

	u32 tx_vector_no;
	/* Tx stats */
	struct vxge_fifo_stats stats;
} ____cacheline_aligned;

struct vxge_ring_stats {
	struct u64_stats_sync syncp;
	u64 rx_frms;
	u64 rx_mcast;
	u64 rx_bytes;

	unsigned long rx_errors;
	unsigned long rx_dropped;
	unsigned long prev_rx_frms;
	unsigned long pci_map_fail;
	unsigned long skb_alloc_fail;
};

struct vxge_ring {
	struct net_device	*ndev;
	struct pci_dev		*pdev;
	struct __vxge_hw_ring	*handle;
	/* The vpath id maintained in the driver -
	 * 0 to 'maximum_vpaths_in_function - 1'
	 */
	int driver_id;

	/* Adaptive interrupt moderation parameters used in T1A */
	unsigned long interrupt_count;
	unsigned long jiffies;

	/* copy of the flag indicating whether rx_hwts is to be used */
	u32 rx_hwts:1;

	int pkts_processed;
	int budget;

	struct napi_struct napi;
	struct napi_struct *napi_p;

#define VXGE_MAX_MAC_ADDR_COUNT		30

	int vlan_tag_strip;
	u32 rx_vector_no;
	enum vxge_hw_status last_status;

	/* Rx stats */
	struct vxge_ring_stats stats;
} ____cacheline_aligned;

struct vxge_vpath {
	struct vxge_fifo fifo;
	struct vxge_ring ring;

	struct __vxge_hw_vpath_handle *handle;

	/* Actual vpath id for this vpath in the device - 0 to 16 */
	int device_id;
	int max_mac_addr_cnt;
	int is_configured;
	int is_open;
	struct vxgedev *vdev;
	u8 macaddr[ETH_ALEN];
	u8 macmask[ETH_ALEN];

#define VXGE_MAX_LEARN_MAC_ADDR_CNT	2048
	/* mac addresses currently programmed into NIC */
	u16 mac_addr_cnt;
	u16 mcast_addr_cnt;
	struct list_head mac_addr_list;

	u32 level_err;
	u32 level_trace;
};
#define VXGE_COPY_DEBUG_INFO_TO_LL(vdev, err, trace) {	\
	for (i = 0; i < vdev->no_of_vpath; i++) {		\
		vdev->vpaths[i].level_err = err;		\
		vdev->vpaths[i].level_trace = trace;		\
	}							\
	vdev->level_err = err;					\
	vdev->level_trace = trace;				\
}

struct vxgedev {
	struct net_device	*ndev;
	struct pci_dev		*pdev;
	struct __vxge_hw_device *devh;
	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
	int vlan_tag_strip;
	struct vxge_config	config;
	unsigned long	state;

	/* Indicates which vpath to reset */
	unsigned long  vp_reset;

	/* Timer used for polling vpath resets */
	struct timer_list vp_reset_timer;

	/* Timer used for polling vpath lockup */
	struct timer_list vp_lockup_timer;

	/*
	 * Flags to track whether device is in All Multicast
	 * or in promiscuous mode.
	 */
	u16		all_multi_flg;

	/* A flag indicating whether rx_hwts is to be used or not. */
	u32	rx_hwts:1,
		titan1:1;

	struct vxge_msix_entry *vxge_entries;
	struct msix_entry *entries;
	/*
	 * 4 for each vpath * 17;
	 * total is 68
	 */
#define	VXGE_MAX_REQUESTED_MSIX	68
#define VXGE_INTR_STRLEN 80
	char desc[VXGE_MAX_REQUESTED_MSIX][VXGE_INTR_STRLEN];

	enum vxge_hw_event cric_err_event;

	int max_vpath_supported;
	int no_of_vpath;

	struct napi_struct napi;
	/* A debug option, when enabled and if error condition occurs,
	 * the driver will do following steps:
	 * - mask all interrupts
	 * - Not clear the source of the alarm
	 * - gracefully stop all I/O
	 * A diagnostic dump of register and stats at this point
	 * reveals very useful information.
	 */
	int exec_mode;
	int max_config_port;
	struct vxge_vpath	*vpaths;

	struct __vxge_hw_vpath_handle *vp_handles[VXGE_HW_MAX_VIRTUAL_PATHS];
	void __iomem *bar0;
	struct vxge_sw_stats	stats;
	int		mtu;
	/* Below variables are used for vpath selection to transmit a packet */
	u8 		vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS];
	u64		vpaths_deployed;

	u32 		intr_cnt;
	u32 		level_err;
	u32 		level_trace;
	char		fw_version[VXGE_HW_FW_STRLEN];
	struct work_struct reset_task;
};

struct vxge_rx_priv {
	struct sk_buff		*skb;
	unsigned char		*skb_data;
	dma_addr_t		data_dma;
	dma_addr_t		data_size;
};

struct vxge_tx_priv {
	struct sk_buff		*skb;
	dma_addr_t		dma_buffers[MAX_SKB_FRAGS+1];
};

#define VXGE_MODULE_PARAM_INT(p, val) \
	static int p = val; \
	module_param(p, int, 0)

static inline
void vxge_os_timer(struct timer_list *timer, void (*func)(unsigned long data),
		   struct vxgedev *vdev, unsigned long timeout)
{
	init_timer(timer);
	timer->function = func;
	timer->data = (unsigned long)vdev;
	mod_timer(timer, jiffies + timeout);
}

void vxge_initialize_ethtool_ops(struct net_device *ndev);
enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev);
int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override);

/* #define VXGE_DEBUG_INIT: debug for initialization functions
 * #define VXGE_DEBUG_TX	 : debug transmit related functions
 * #define VXGE_DEBUG_RX  : debug recevice related functions
 * #define VXGE_DEBUG_MEM : debug memory module
 * #define VXGE_DEBUG_LOCK: debug locks
 * #define VXGE_DEBUG_SEM : debug semaphore
 * #define VXGE_DEBUG_ENTRYEXIT: debug functions by adding entry exit statements
*/
#define VXGE_DEBUG_INIT		0x00000001
#define VXGE_DEBUG_TX		0x00000002
#define VXGE_DEBUG_RX		0x00000004
#define VXGE_DEBUG_MEM		0x00000008
#define VXGE_DEBUG_LOCK		0x00000010
#define VXGE_DEBUG_SEM		0x00000020
#define VXGE_DEBUG_ENTRYEXIT	0x00000040
#define VXGE_DEBUG_INTR		0x00000080
#define VXGE_DEBUG_LL_CONFIG	0x00000100

/* Debug tracing for VXGE driver */
#ifndef VXGE_DEBUG_MASK
#define VXGE_DEBUG_MASK	0x0
#endif

#if (VXGE_DEBUG_LL_CONFIG & VXGE_DEBUG_MASK)
#define vxge_debug_ll_config(level, fmt, ...) \
	vxge_debug_ll(level, VXGE_DEBUG_LL_CONFIG, fmt, __VA_ARGS__)
#else
#define vxge_debug_ll_config(level, fmt, ...)
#endif

#if (VXGE_DEBUG_INIT & VXGE_DEBUG_MASK)
#define vxge_debug_init(level, fmt, ...) \
	vxge_debug_ll(level, VXGE_DEBUG_INIT, fmt, __VA_ARGS__)
#else
#define vxge_debug_init(level, fmt, ...)
#endif

#if (VXGE_DEBUG_TX & VXGE_DEBUG_MASK)
#define vxge_debug_tx(level, fmt, ...) \
	vxge_debug_ll(level, VXGE_DEBUG_TX, fmt, __VA_ARGS__)
#else
#define vxge_debug_tx(level, fmt, ...)
#endif

#if (VXGE_DEBUG_RX & VXGE_DEBUG_MASK)
#define vxge_debug_rx(level, fmt, ...) \
	vxge_debug_ll(level, VXGE_DEBUG_RX, fmt, __VA_ARGS__)
#else
#define vxge_debug_rx(level, fmt, ...)
#endif

#if (VXGE_DEBUG_MEM & VXGE_DEBUG_MASK)
#define vxge_debug_mem(level, fmt, ...) \
	vxge_debug_ll(level, VXGE_DEBUG_MEM, fmt, __VA_ARGS__)
#else
#define vxge_debug_mem(level, fmt, ...)
#endif

#if (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK)
#define vxge_debug_entryexit(level, fmt, ...) \
	vxge_debug_ll(level, VXGE_DEBUG_ENTRYEXIT, fmt, __VA_ARGS__)
#else
#define vxge_debug_entryexit(level, fmt, ...)
#endif

#if (VXGE_DEBUG_INTR & VXGE_DEBUG_MASK)
#define vxge_debug_intr(level, fmt, ...) \
	vxge_debug_ll(level, VXGE_DEBUG_INTR, fmt, __VA_ARGS__)
#else
#define vxge_debug_intr(level, fmt, ...)
#endif

#define VXGE_DEVICE_DEBUG_LEVEL_SET(level, mask, vdev) {\
	vxge_hw_device_debug_set((struct __vxge_hw_device  *)vdev->devh, \
		level, mask);\
	VXGE_COPY_DEBUG_INFO_TO_LL(vdev, \
		vxge_hw_device_error_level_get((struct __vxge_hw_device  *) \
			vdev->devh), \
		vxge_hw_device_trace_level_get((struct __vxge_hw_device  *) \
			vdev->devh));\
}

#ifdef NETIF_F_GSO
#define vxge_tcp_mss(skb) (skb_shinfo(skb)->gso_size)
#define vxge_udp_mss(skb) (skb_shinfo(skb)->gso_size)
#define vxge_offload_type(skb) (skb_shinfo(skb)->gso_type)
#endif

#endif