aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/brocade/bna/bna_hw_defs.h
blob: 2702d02e98d99632c90ff87a70bf243cbed4577d (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
/*
 * 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) 2005-2011 Brocade Communications Systems, Inc.
 * All rights reserved
 * www.brocade.com
 */

/* File for interrupt macros and functions */

#ifndef __BNA_HW_DEFS_H__
#define __BNA_HW_DEFS_H__

#include "bfi_reg.h"

/* SW imposed limits */

#define BFI_ENET_DEF_TXQ		1
#define BFI_ENET_DEF_RXP		1
#define BFI_ENET_DEF_UCAM		1
#define BFI_ENET_DEF_RITSZ		1

#define BFI_ENET_MAX_MCAM		256

#define BFI_INVALID_RID			-1

#define BFI_IBIDX_SIZE			4

#define BFI_VLAN_WORD_SHIFT		5	/* 32 bits */
#define BFI_VLAN_WORD_MASK		0x1F
#define BFI_VLAN_BLOCK_SHIFT		9	/* 512 bits */
#define BFI_VLAN_BMASK_ALL		0xFF

#define BFI_COALESCING_TIMER_UNIT	5	/* 5us */
#define BFI_MAX_COALESCING_TIMEO	0xFF	/* in 5us units */
#define BFI_MAX_INTERPKT_COUNT		0xFF
#define BFI_MAX_INTERPKT_TIMEO		0xF	/* in 0.5us units */
#define BFI_TX_COALESCING_TIMEO		20	/* 20 * 5 = 100us */
#define BFI_TX_INTERPKT_COUNT		12	/* Pkt Cnt = 12 */
#define BFI_TX_INTERPKT_TIMEO		15	/* 15 * 0.5 = 7.5us */
#define	BFI_RX_COALESCING_TIMEO		12	/* 12 * 5 = 60us */
#define	BFI_RX_INTERPKT_COUNT		6	/* Pkt Cnt = 6 */
#define	BFI_RX_INTERPKT_TIMEO		3	/* 3 * 0.5 = 1.5us */

#define BFI_TXQ_WI_SIZE			64	/* bytes */
#define BFI_RXQ_WI_SIZE			8	/* bytes */
#define BFI_CQ_WI_SIZE			16	/* bytes */
#define BFI_TX_MAX_WRR_QUOTA		0xFFF

#define BFI_TX_MAX_VECTORS_PER_WI	4
#define BFI_TX_MAX_VECTORS_PER_PKT	0xFF
#define BFI_TX_MAX_DATA_PER_VECTOR	0xFFFF
#define BFI_TX_MAX_DATA_PER_PKT		0xFFFFFF

/* Small Q buffer size */
#define BFI_SMALL_RXBUF_SIZE		128

#define BFI_TX_MAX_PRIO			8
#define BFI_TX_PRIO_MAP_ALL		0xFF

/*
 *
 * Register definitions and macros
 *
 */

#define BNA_PCI_REG_CT_ADDRSZ		(0x40000)

#define ct_reg_addr_init(_bna, _pcidev)					\
{									\
	struct bna_reg_offset reg_offset[] =				\
	{{HOSTFN0_INT_STATUS, HOSTFN0_INT_MSK},				\
	 {HOSTFN1_INT_STATUS, HOSTFN1_INT_MSK},				\
	 {HOSTFN2_INT_STATUS, HOSTFN2_INT_MSK},				\
	 {HOSTFN3_INT_STATUS, HOSTFN3_INT_MSK} };			\
									\
	(_bna)->regs.fn_int_status = (_pcidev)->pci_bar_kva +		\
				reg_offset[(_pcidev)->pci_func].fn_int_status;\
	(_bna)->regs.fn_int_mask = (_pcidev)->pci_bar_kva +		\
				reg_offset[(_pcidev)->pci_func].fn_int_mask;\
}

#define ct_bit_defn_init(_bna, _pcidev)					\
{									\
	(_bna)->bits.mbox_status_bits = (__HFN_INT_MBOX_LPU0 |		\
					__HFN_INT_MBOX_LPU1);		\
	(_bna)->bits.mbox_mask_bits = (__HFN_INT_MBOX_LPU0 |		\
					__HFN_INT_MBOX_LPU1);		\
	(_bna)->bits.error_status_bits = (__HFN_INT_ERR_MASK);		\
	(_bna)->bits.error_mask_bits = (__HFN_INT_ERR_MASK);		\
	(_bna)->bits.halt_status_bits = __HFN_INT_LL_HALT;		\
	(_bna)->bits.halt_mask_bits = __HFN_INT_LL_HALT;		\
}

#define ct2_reg_addr_init(_bna, _pcidev)				\
{									\
	(_bna)->regs.fn_int_status = (_pcidev)->pci_bar_kva +		\
				CT2_HOSTFN_INT_STATUS;			\
	(_bna)->regs.fn_int_mask = (_pcidev)->pci_bar_kva +		\
				CT2_HOSTFN_INTR_MASK;			\
}

#define ct2_bit_defn_init(_bna, _pcidev)				\
{									\
	(_bna)->bits.mbox_status_bits = (__HFN_INT_MBOX_LPU0_CT2 |	\
					__HFN_INT_MBOX_LPU1_CT2);	\
	(_bna)->bits.mbox_mask_bits = (__HFN_INT_MBOX_LPU0_CT2 |	\
					__HFN_INT_MBOX_LPU1_CT2);	\
	(_bna)->bits.error_status_bits = (__HFN_INT_ERR_MASK_CT2);	\
	(_bna)->bits.error_mask_bits = (__HFN_INT_ERR_MASK_CT2);	\
	(_bna)->bits.halt_status_bits = __HFN_INT_CPQ_HALT_CT2;		\
	(_bna)->bits.halt_mask_bits = __HFN_INT_CPQ_HALT_CT2;		\
}

#define bna_reg_addr_init(_bna, _pcidev)				\
{									\
	switch ((_pcidev)->device_id) {					\
	case PCI_DEVICE_ID_BROCADE_CT:					\
		ct_reg_addr_init((_bna), (_pcidev));			\
		ct_bit_defn_init((_bna), (_pcidev));			\
		break;							\
	case BFA_PCI_DEVICE_ID_CT2:					\
		ct2_reg_addr_init((_bna), (_pcidev));			\
		ct2_bit_defn_init((_bna), (_pcidev));			\
		break;							\
	}								\
}

#define bna_port_id_get(_bna) ((_bna)->ioceth.ioc.port_id)

/*  Interrupt related bits, flags and macros  */

#define IB_STATUS_BITS		0x0000ffff

#define BNA_IS_MBOX_INTR(_bna, _intr_status)				\
	((_intr_status) & (_bna)->bits.mbox_status_bits)

#define BNA_IS_HALT_INTR(_bna, _intr_status)				\
	((_intr_status) & (_bna)->bits.halt_status_bits)

#define BNA_IS_ERR_INTR(_bna, _intr_status)	\
	((_intr_status) & (_bna)->bits.error_status_bits)

#define BNA_IS_MBOX_ERR_INTR(_bna, _intr_status)	\
	(BNA_IS_MBOX_INTR(_bna, _intr_status) |		\
	BNA_IS_ERR_INTR(_bna, _intr_status))

#define BNA_IS_INTX_DATA_INTR(_intr_status)		\
		((_intr_status) & IB_STATUS_BITS)

#define bna_halt_clear(_bna)						\
do {									\
	u32 init_halt;						\
	init_halt = readl((_bna)->ioceth.ioc.ioc_regs.ll_halt);	\
	init_halt &= ~__FW_INIT_HALT_P;					\
	writel(init_halt, (_bna)->ioceth.ioc.ioc_regs.ll_halt);	\
	init_halt = readl((_bna)->ioceth.ioc.ioc_regs.ll_halt);	\
} while (0)

#define bna_intx_disable(_bna, _cur_mask)				\
{									\
	(_cur_mask) = readl((_bna)->regs.fn_int_mask);		\
	writel(0xffffffff, (_bna)->regs.fn_int_mask);		\
}

#define bna_intx_enable(bna, new_mask)					\
	writel((new_mask), (bna)->regs.fn_int_mask)
#define bna_mbox_intr_disable(bna)					\
do {									\
	u32 mask;							\
	mask = readl((bna)->regs.fn_int_mask);				\
	writel((mask | (bna)->bits.mbox_mask_bits |			\
		(bna)->bits.error_mask_bits), (bna)->regs.fn_int_mask); \
	mask = readl((bna)->regs.fn_int_mask);				\
} while (0)

#define bna_mbox_intr_enable(bna)					\
do {									\
	u32 mask;							\
	mask = readl((bna)->regs.fn_int_mask);				\
	writel((mask & ~((bna)->bits.mbox_mask_bits |			\
		(bna)->bits.error_mask_bits)), (bna)->regs.fn_int_mask);\
	mask = readl((bna)->regs.fn_int_mask);				\
} while (0)

#define bna_intr_status_get(_bna, _status)				\
{									\
	(_status) = readl((_bna)->regs.fn_int_status);			\
	if (_status) {							\
		writel(((_status) & ~(_bna)->bits.mbox_status_bits),	\
			(_bna)->regs.fn_int_status);			\
	}								\
}

/*
 * MAX ACK EVENTS : No. of acks that can be accumulated in driver,
 * before acking to h/w. The no. of bits is 16 in the doorbell register,
 * however we keep this limited to 15 bits.
 * This is because around the edge of 64K boundary (16 bits), one
 * single poll can make the accumulated ACK counter cross the 64K boundary,
 * causing problems, when we try to ack with a value greater than 64K.
 * 15 bits (32K) should  be large enough to accumulate, anyways, and the max.
 * acked events to h/w can be (32K + max poll weight) (currently 64).
 */
#define	BNA_IB_MAX_ACK_EVENTS		(1 << 15)

/* These macros build the data portion of the TxQ/RxQ doorbell */
#define BNA_DOORBELL_Q_PRD_IDX(_pi)	(0x80000000 | (_pi))
#define BNA_DOORBELL_Q_STOP		(0x40000000)

/* These macros build the data portion of the IB doorbell */
#define BNA_DOORBELL_IB_INT_ACK(_timeout, _events)			\
	(0x80000000 | ((_timeout) << 16) | (_events))
#define BNA_DOORBELL_IB_INT_DISABLE	(0x40000000)

/* Set the coalescing timer for the given ib */
#define bna_ib_coalescing_timer_set(_i_dbell, _cls_timer)		\
	((_i_dbell)->doorbell_ack = BNA_DOORBELL_IB_INT_ACK((_cls_timer), 0));

/* Acks 'events' # of events for a given ib while disabling interrupts */
#define bna_ib_ack_disable_irq(_i_dbell, _events)			\
	(writel(BNA_DOORBELL_IB_INT_ACK(0, (_events)), \
		(_i_dbell)->doorbell_addr));

/* Acks 'events' # of events for a given ib */
#define bna_ib_ack(_i_dbell, _events)					\
	(writel(((_i_dbell)->doorbell_ack | (_events)), \
		(_i_dbell)->doorbell_addr));

#define bna_ib_start(_bna, _ib, _is_regular)				\
{									\
	u32 intx_mask;						\
	struct bna_ib *ib = _ib;					\
	if ((ib->intr_type == BNA_INTR_T_INTX)) {			\
		bna_intx_disable((_bna), intx_mask);			\
		intx_mask &= ~(ib->intr_vector);			\
		bna_intx_enable((_bna), intx_mask);			\
	}								\
	bna_ib_coalescing_timer_set(&ib->door_bell,			\
			ib->coalescing_timeo);				\
	if (_is_regular)						\
		bna_ib_ack(&ib->door_bell, 0);				\
}

#define bna_ib_stop(_bna, _ib)						\
{									\
	u32 intx_mask;						\
	struct bna_ib *ib = _ib;					\
	writel(BNA_DOORBELL_IB_INT_DISABLE,				\
		ib->door_bell.doorbell_addr);				\
	if (ib->intr_type == BNA_INTR_T_INTX) {				\
		bna_intx_disable((_bna), intx_mask);			\
		intx_mask |= ib->intr_vector;				\
		bna_intx_enable((_bna), intx_mask);			\
	}								\
}

#define bna_txq_prod_indx_doorbell(_tcb)				\
	(writel(BNA_DOORBELL_Q_PRD_IDX((_tcb)->producer_index), \
		(_tcb)->q_dbell));

#define bna_rxq_prod_indx_doorbell(_rcb)				\
	(writel(BNA_DOORBELL_Q_PRD_IDX((_rcb)->producer_index), \
		(_rcb)->q_dbell));

/* TxQ, RxQ, CQ related bits, offsets, macros */

/* TxQ Entry Opcodes */
#define BNA_TXQ_WI_SEND			(0x402)	/* Single Frame Transmission */
#define BNA_TXQ_WI_SEND_LSO		(0x403)	/* Multi-Frame Transmission */
#define BNA_TXQ_WI_EXTENSION		(0x104)	/* Extension WI */

/* TxQ Entry Control Flags */
#define BNA_TXQ_WI_CF_FCOE_CRC		(1 << 8)
#define BNA_TXQ_WI_CF_IPID_MODE		(1 << 5)
#define BNA_TXQ_WI_CF_INS_PRIO		(1 << 4)
#define BNA_TXQ_WI_CF_INS_VLAN		(1 << 3)
#define BNA_TXQ_WI_CF_UDP_CKSUM		(1 << 2)
#define BNA_TXQ_WI_CF_TCP_CKSUM		(1 << 1)
#define BNA_TXQ_WI_CF_IP_CKSUM		(1 << 0)

#define BNA_TXQ_WI_L4_HDR_N_OFFSET(_hdr_size, _offset) \
		(((_hdr_size) << 10) | ((_offset) & 0x3FF))

/*
 * Completion Q defines
 */
/* CQ Entry Flags */
#define	BNA_CQ_EF_MAC_ERROR	(1 <<  0)
#define	BNA_CQ_EF_FCS_ERROR	(1 <<  1)
#define	BNA_CQ_EF_TOO_LONG	(1 <<  2)
#define	BNA_CQ_EF_FC_CRC_OK	(1 <<  3)

#define	BNA_CQ_EF_RSVD1		(1 <<  4)
#define	BNA_CQ_EF_L4_CKSUM_OK	(1 <<  5)
#define	BNA_CQ_EF_L3_CKSUM_OK	(1 <<  6)
#define	BNA_CQ_EF_HDS_HEADER	(1 <<  7)

#define	BNA_CQ_EF_UDP		(1 <<  8)
#define	BNA_CQ_EF_TCP		(1 <<  9)
#define	BNA_CQ_EF_IP_OPTIONS	(1 << 10)
#define	BNA_CQ_EF_IPV6		(1 << 11)

#define	BNA_CQ_EF_IPV4		(1 << 12)
#define	BNA_CQ_EF_VLAN		(1 << 13)
#define	BNA_CQ_EF_RSS		(1 << 14)
#define	BNA_CQ_EF_RSVD2		(1 << 15)

#define	BNA_CQ_EF_MCAST_MATCH   (1 << 16)
#define	BNA_CQ_EF_MCAST		(1 << 17)
#define BNA_CQ_EF_BCAST		(1 << 18)
#define	BNA_CQ_EF_REMOTE	(1 << 19)

#define	BNA_CQ_EF_LOCAL		(1 << 20)
/* CAT2 ASIC does not use bit 21 as per the SPEC.
 * Bit 31 is set in every end of frame completion
 */
#define BNA_CQ_EF_EOP		(1 << 31)

/* Data structures */

struct bna_reg_offset {
	u32 fn_int_status;
	u32 fn_int_mask;
};

struct bna_bit_defn {
	u32 mbox_status_bits;
	u32 mbox_mask_bits;
	u32 error_status_bits;
	u32 error_mask_bits;
	u32 halt_status_bits;
	u32 halt_mask_bits;
};

struct bna_reg {
	void __iomem *fn_int_status;
	void __iomem *fn_int_mask;
};

/* TxQ Vector (a.k.a. Tx-Buffer Descriptor) */
struct bna_dma_addr {
	u32		msb;
	u32		lsb;
};

struct bna_txq_wi_vector {
	u16		reserved;
	u16		length;		/* Only 14 LSB are valid */
	struct bna_dma_addr host_addr; /* Tx-Buf DMA addr */
};

/*  TxQ Entry Structure
 *
 *  BEWARE:  Load values into this structure with correct endianess.
 */
struct bna_txq_entry {
	union {
		struct {
			u8 reserved;
			u8 num_vectors;	/* number of vectors present */
			u16 opcode; /* Either */
						    /* BNA_TXQ_WI_SEND or */
						    /* BNA_TXQ_WI_SEND_LSO */
			u16 flags; /* OR of all the flags */
			u16 l4_hdr_size_n_offset;
			u16 vlan_tag;
			u16 lso_mss;	/* Only 14 LSB are valid */
			u32 frame_length;	/* Only 24 LSB are valid */
		} wi;

		struct {
			u16 reserved;
			u16 opcode; /* Must be */
						    /* BNA_TXQ_WI_EXTENSION */
			u32 reserved2[3];	/* Place holder for */
						/* removed vector (12 bytes) */
		} wi_ext;
	} hdr;
	struct bna_txq_wi_vector vector[4];
};

/* RxQ Entry Structure */
struct bna_rxq_entry {		/* Rx-Buffer */
	struct bna_dma_addr host_addr; /* Rx-Buffer DMA address */
};

/* CQ Entry Structure */
struct bna_cq_entry {
	u32 flags;
	u16 vlan_tag;
	u16 length;
	u32 rss_hash;
	u8 valid;
	u8 reserved1;
	u8 reserved2;
	u8 rxq_id;
};

#endif /* __BNA_HW_DEFS_H__ */