summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/hw/nes/nes.h
blob: 8eb7ae96974d0846fe52f28a04f579ce12edd28b (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
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
/*
 * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __NES_H
#define __NES_H

#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/workqueue.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <linux/crc32c.h>

#include <rdma/ib_smi.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_pack.h>
#include <rdma/rdma_cm.h>
#include <rdma/iw_cm.h>

#define NES_SEND_FIRST_WRITE

#define QUEUE_DISCONNECTS

#define DRV_BUILD   "1"

#define DRV_NAME    "iw_nes"
#define DRV_VERSION "1.0 KO Build " DRV_BUILD
#define PFX         DRV_NAME ": "

/*
 * NetEffect PCI vendor id and NE010 PCI device id.
 */
#ifndef PCI_VENDOR_ID_NETEFFECT	/* not in pci.ids yet */
#define PCI_VENDOR_ID_NETEFFECT       0x1678
#define PCI_DEVICE_ID_NETEFFECT_NE020 0x0100
#endif

#define NE020_REV   4
#define NE020_REV1  5

#define BAR_0       0
#define BAR_1       2

#define RX_BUF_SIZE             (1536 + 8)
#define NES_REG0_SIZE           (4 * 1024)
#define NES_TX_TIMEOUT          (6*HZ)
#define NES_FIRST_QPN           64
#define NES_SW_CONTEXT_ALIGN    1024

#define NES_NIC_MAX_NICS        16
#define NES_MAX_ARP_TABLE_SIZE  4096

#define NES_NIC_CEQ_SIZE        8
/* NICs will be on a separate CQ */
#define NES_CCEQ_SIZE ((nesadapter->max_cq / nesadapter->port_count) - 32)

#define NES_MAX_PORT_COUNT 4

#define MAX_DPC_ITERATIONS               128

#define NES_DRV_OPT_ENABLE_MPA_VER_0     0x00000001
#define NES_DRV_OPT_DISABLE_MPA_CRC      0x00000002
#define NES_DRV_OPT_DISABLE_FIRST_WRITE  0x00000004
#define NES_DRV_OPT_DISABLE_INTF         0x00000008
#define NES_DRV_OPT_ENABLE_MSI           0x00000010
#define NES_DRV_OPT_DUAL_LOGICAL_PORT    0x00000020
#define NES_DRV_OPT_SUPRESS_OPTION_BC    0x00000040
#define NES_DRV_OPT_NO_INLINE_DATA       0x00000080
#define NES_DRV_OPT_DISABLE_INT_MOD      0x00000100
#define NES_DRV_OPT_DISABLE_VIRT_WQ      0x00000200

#define NES_AEQ_EVENT_TIMEOUT         2500
#define NES_DISCONNECT_EVENT_TIMEOUT  2000

/* debug levels */
/* must match userspace */
#define NES_DBG_HW          0x00000001
#define NES_DBG_INIT        0x00000002
#define NES_DBG_ISR         0x00000004
#define NES_DBG_PHY         0x00000008
#define NES_DBG_NETDEV      0x00000010
#define NES_DBG_CM          0x00000020
#define NES_DBG_CM1         0x00000040
#define NES_DBG_NIC_RX      0x00000080
#define NES_DBG_NIC_TX      0x00000100
#define NES_DBG_CQP         0x00000200
#define NES_DBG_MMAP        0x00000400
#define NES_DBG_MR          0x00000800
#define NES_DBG_PD          0x00001000
#define NES_DBG_CQ          0x00002000
#define NES_DBG_QP          0x00004000
#define NES_DBG_MOD_QP      0x00008000
#define NES_DBG_AEQ         0x00010000
#define NES_DBG_IW_RX       0x00020000
#define NES_DBG_IW_TX       0x00040000
#define NES_DBG_SHUTDOWN    0x00080000
#define NES_DBG_RSVD1       0x10000000
#define NES_DBG_RSVD2       0x20000000
#define NES_DBG_RSVD3       0x40000000
#define NES_DBG_RSVD4       0x80000000
#define NES_DBG_ALL         0xffffffff

#ifdef CONFIG_INFINIBAND_NES_DEBUG
#define nes_debug(level, fmt, args...) \
	if (level & nes_debug_level) \
		printk(KERN_ERR PFX "%s[%u]: " fmt, __func__, __LINE__, ##args)

#define assert(expr)                                                \
if (!(expr)) {                                                       \
	printk(KERN_ERR PFX "Assertion failed! %s, %s, %s, line %d\n",  \
		   #expr, __FILE__, __func__, __LINE__);                \
}

#define NES_EVENT_TIMEOUT   1200000
#else
#define nes_debug(level, fmt, args...)
#define assert(expr)          do {} while (0)

#define NES_EVENT_TIMEOUT   100000
#endif

#include "nes_hw.h"
#include "nes_verbs.h"
#include "nes_context.h"
#include "nes_user.h"
#include "nes_cm.h"

extern int max_mtu;
#define max_frame_len (max_mtu+ETH_HLEN)
extern int interrupt_mod_interval;
extern int nes_if_count;
extern int mpa_version;
extern int disable_mpa_crc;
extern unsigned int send_first;
extern unsigned int nes_drv_opt;
extern unsigned int nes_debug_level;

extern struct list_head nes_adapter_list;

extern atomic_t cm_connects;
extern atomic_t cm_accepts;
extern atomic_t cm_disconnects;
extern atomic_t cm_closes;
extern atomic_t cm_connecteds;
extern atomic_t cm_connect_reqs;
extern atomic_t cm_rejects;
extern atomic_t mod_qp_timouts;
extern atomic_t qps_created;
extern atomic_t qps_destroyed;
extern atomic_t sw_qps_destroyed;
extern u32 mh_detected;
extern u32 mh_pauses_sent;
extern u32 cm_packets_sent;
extern u32 cm_packets_bounced;
extern u32 cm_packets_created;
extern u32 cm_packets_received;
extern u32 cm_packets_dropped;
extern u32 cm_packets_retrans;
extern u32 cm_listens_created;
extern u32 cm_listens_destroyed;
extern u32 cm_backlog_drops;
extern atomic_t cm_loopbacks;
extern atomic_t cm_nodes_created;
extern atomic_t cm_nodes_destroyed;
extern atomic_t cm_accel_dropped_pkts;
extern atomic_t cm_resets_recvd;

extern u32 int_mod_timer_init;
extern u32 int_mod_cq_depth_256;
extern u32 int_mod_cq_depth_128;
extern u32 int_mod_cq_depth_32;
extern u32 int_mod_cq_depth_24;
extern u32 int_mod_cq_depth_16;
extern u32 int_mod_cq_depth_4;
extern u32 int_mod_cq_depth_1;

struct nes_device {
	struct nes_adapter	   *nesadapter;
	void __iomem           *regs;
	void __iomem           *index_reg;
	struct pci_dev         *pcidev;
	struct net_device      *netdev[NES_NIC_MAX_NICS];
	u64                    link_status_interrupts;
	struct tasklet_struct  dpc_tasklet;
	spinlock_t             indexed_regs_lock;
	unsigned long          csr_start;
	unsigned long          doorbell_region;
	unsigned long          doorbell_start;
	unsigned long          mac_tx_errors;
	unsigned long          mac_pause_frames_sent;
	unsigned long          mac_pause_frames_received;
	unsigned long          mac_rx_errors;
	unsigned long          mac_rx_crc_errors;
	unsigned long          mac_rx_symbol_err_frames;
	unsigned long          mac_rx_jabber_frames;
	unsigned long          mac_rx_oversized_frames;
	unsigned long          mac_rx_short_frames;
	unsigned long          port_rx_discards;
	unsigned long          port_tx_discards;
	unsigned int           mac_index;
	unsigned int           nes_stack_start;

	/* Control Structures */
	void                   *cqp_vbase;
	dma_addr_t             cqp_pbase;
	u32                    cqp_mem_size;
	u8                     ceq_index;
	u8                     nic_ceq_index;
	struct nes_hw_cqp      cqp;
	struct nes_hw_cq       ccq;
	struct list_head       cqp_avail_reqs;
	struct list_head       cqp_pending_reqs;
	struct nes_cqp_request *nes_cqp_requests;

	u32                    int_req;
	u32                    int_stat;
	u32                    timer_int_req;
	u32                    timer_only_int_count;
	u32                    intf_int_req;
	u32                    last_mac_tx_pauses;
	u32                    last_used_chunks_tx;
	struct list_head       list;

	u16                    base_doorbell_index;
	u16                    currcq_count;
	u16                    deepcq_count;
	u8                     msi_enabled;
	u8                     netdev_count;
	u8                     napi_isr_ran;
	u8                     disable_rx_flow_control;
	u8                     disable_tx_flow_control;
};


static inline __le32 get_crc_value(struct nes_v4_quad *nes_quad)
{
	u32 crc_value;
	crc_value = crc32c(~0, (void *)nes_quad, sizeof (struct nes_v4_quad));

	/*
	 * With commit ef19454b ("[LIB] crc32c: Keep intermediate crc
	 * state in cpu order"), behavior of crc32c changes on
	 * big-endian platforms.  Our algorithm expects the previous
	 * behavior; otherwise we have RDMA connection establishment
	 * issue on big-endian.
	 */
	return cpu_to_le32(crc_value);
}

static inline void
set_wqe_64bit_value(__le32 *wqe_words, u32 index, u64 value)
{
	wqe_words[index]     = cpu_to_le32((u32) ((unsigned long)value));
	wqe_words[index + 1] = cpu_to_le32((u32)(upper_32_bits((unsigned long)value)));
}

static inline void
set_wqe_32bit_value(__le32 *wqe_words, u32 index, u32 value)
{
	wqe_words[index] = cpu_to_le32(value);
}

static inline void
nes_fill_init_cqp_wqe(struct nes_hw_cqp_wqe *cqp_wqe, struct nes_device *nesdev)
{
	set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_COMP_CTX_LOW_IDX,
			(u64)((unsigned long) &nesdev->cqp));
	cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX]   = 0;
	cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX]  = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX]       = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_LOW_IDX]       = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX]        = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX]       = 0;
}

static inline void
nes_fill_init_qp_wqe(struct nes_hw_qp_wqe *wqe, struct nes_qp *nesqp, u32 head)
{
	u32 value;
	value = ((u32)((unsigned long) nesqp)) | head;
	set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_HIGH_IDX,
			(u32)(upper_32_bits((unsigned long)(nesqp))));
	set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, value);
}

/* Read from memory-mapped device */
static inline u32 nes_read_indexed(struct nes_device *nesdev, u32 reg_index)
{
	unsigned long flags;
	void __iomem *addr = nesdev->index_reg;
	u32 value;

	spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);

	writel(reg_index, addr);
	value = readl((void __iomem *)addr + 4);

	spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
	return value;
}

static inline u32 nes_read32(const void __iomem *addr)
{
	return readl(addr);
}

static inline u16 nes_read16(const void __iomem *addr)
{
	return readw(addr);
}

static inline u8 nes_read8(const void __iomem *addr)
{
	return readb(addr);
}

/* Write to memory-mapped device */
static inline void nes_write_indexed(struct nes_device *nesdev, u32 reg_index, u32 val)
{
	unsigned long flags;
	void __iomem *addr = nesdev->index_reg;

	spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);

	writel(reg_index, addr);
	writel(val, (void __iomem *)addr + 4);

	spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
}

static inline void nes_write32(void __iomem *addr, u32 val)
{
	writel(val, addr);
}

static inline void nes_write16(void __iomem *addr, u16 val)
{
	writew(val, addr);
}

static inline void nes_write8(void __iomem *addr, u8 val)
{
	writeb(val, addr);
}



static inline int nes_alloc_resource(struct nes_adapter *nesadapter,
		unsigned long *resource_array, u32 max_resources,
		u32 *req_resource_num, u32 *next)
{
	unsigned long flags;
	u32 resource_num;

	spin_lock_irqsave(&nesadapter->resource_lock, flags);

	resource_num = find_next_zero_bit(resource_array, max_resources, *next);
	if (resource_num >= max_resources) {
		resource_num = find_first_zero_bit(resource_array, max_resources);
		if (resource_num >= max_resources) {
			printk(KERN_ERR PFX "%s: No available resourcess.\n", __func__);
			spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
			return -EMFILE;
		}
	}
	set_bit(resource_num, resource_array);
	*next = resource_num+1;
	if (*next == max_resources) {
		*next = 0;
	}
	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
	*req_resource_num = resource_num;

	return 0;
}

static inline int nes_is_resource_allocated(struct nes_adapter *nesadapter,
		unsigned long *resource_array, u32 resource_num)
{
	unsigned long flags;
	int bit_is_set;

	spin_lock_irqsave(&nesadapter->resource_lock, flags);

	bit_is_set = test_bit(resource_num, resource_array);
	nes_debug(NES_DBG_HW, "resource_num %u is%s allocated.\n",
			resource_num, (bit_is_set ? "": " not"));
	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);

	return bit_is_set;
}

static inline void nes_free_resource(struct nes_adapter *nesadapter,
		unsigned long *resource_array, u32 resource_num)
{
	unsigned long flags;

	spin_lock_irqsave(&nesadapter->resource_lock, flags);
	clear_bit(resource_num, resource_array);
	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
}

static inline struct nes_vnic *to_nesvnic(struct ib_device *ibdev)
{
	return container_of(ibdev, struct nes_ib_device, ibdev)->nesvnic;
}

static inline struct nes_pd *to_nespd(struct ib_pd *ibpd)
{
	return container_of(ibpd, struct nes_pd, ibpd);
}

static inline struct nes_ucontext *to_nesucontext(struct ib_ucontext *ibucontext)
{
	return container_of(ibucontext, struct nes_ucontext, ibucontext);
}

static inline struct nes_mr *to_nesmr(struct ib_mr *ibmr)
{
	return container_of(ibmr, struct nes_mr, ibmr);
}

static inline struct nes_mr *to_nesmr_from_ibfmr(struct ib_fmr *ibfmr)
{
	return container_of(ibfmr, struct nes_mr, ibfmr);
}

static inline struct nes_mr *to_nesmw(struct ib_mw *ibmw)
{
	return container_of(ibmw, struct nes_mr, ibmw);
}

static inline struct nes_fmr *to_nesfmr(struct nes_mr *nesmr)
{
	return container_of(nesmr, struct nes_fmr, nesmr);
}

static inline struct nes_cq *to_nescq(struct ib_cq *ibcq)
{
	return container_of(ibcq, struct nes_cq, ibcq);
}

static inline struct nes_qp *to_nesqp(struct ib_qp *ibqp)
{
	return container_of(ibqp, struct nes_qp, ibqp);
}



/* nes.c */
void nes_add_ref(struct ib_qp *);
void nes_rem_ref(struct ib_qp *);
struct ib_qp *nes_get_qp(struct ib_device *, int);


/* nes_hw.c */
struct nes_adapter *nes_init_adapter(struct nes_device *, u8);
void  nes_nic_init_timer_defaults(struct nes_device *, u8);
void nes_destroy_adapter(struct nes_adapter *);
int nes_init_cqp(struct nes_device *);
int nes_init_phy(struct nes_device *);
int nes_init_nic_qp(struct nes_device *, struct net_device *);
void nes_destroy_nic_qp(struct nes_vnic *);
int nes_napi_isr(struct nes_device *);
void nes_dpc(unsigned long);
void nes_nic_ce_handler(struct nes_device *, struct nes_hw_nic_cq *);
void nes_iwarp_ce_handler(struct nes_device *, struct nes_hw_cq *);
int nes_destroy_cqp(struct nes_device *);
int nes_nic_cm_xmit(struct sk_buff *, struct net_device *);

/* nes_nic.c */
struct net_device *nes_netdev_init(struct nes_device *, void __iomem *);
void nes_netdev_destroy(struct net_device *);
int nes_nic_cm_xmit(struct sk_buff *, struct net_device *);

/* nes_cm.c */
void *nes_cm_create(struct net_device *);
int nes_cm_recv(struct sk_buff *, struct net_device *);
void nes_update_arp(unsigned char *, u32, u32, u16, u16);
void nes_manage_arp_cache(struct net_device *, unsigned char *, u32, u32);
void nes_sock_release(struct nes_qp *, unsigned long *);
void flush_wqes(struct nes_device *nesdev, struct nes_qp *, u32, u32);
int nes_manage_apbvt(struct nes_vnic *, u32, u32, u32);
int nes_cm_disconn(struct nes_qp *);
void nes_cm_disconn_worker(void *);

/* nes_verbs.c */
int nes_hw_modify_qp(struct nes_device *, struct nes_qp *, u32, u32);
int nes_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
struct nes_ib_device *nes_init_ofa_device(struct net_device *);
void nes_destroy_ofa_device(struct nes_ib_device *);
int nes_register_ofa_device(struct nes_ib_device *);

/* nes_util.c */
int nes_read_eeprom_values(struct nes_device *, struct nes_adapter *);
void nes_write_1G_phy_reg(struct nes_device *, u8, u8, u16);
void nes_read_1G_phy_reg(struct nes_device *, u8, u8, u16 *);
void nes_write_10G_phy_reg(struct nes_device *, u16, u8, u16, u16);
void nes_read_10G_phy_reg(struct nes_device *, u8, u8, u16);
struct nes_cqp_request *nes_get_cqp_request(struct nes_device *);
void nes_free_cqp_request(struct nes_device *nesdev,
			  struct nes_cqp_request *cqp_request);
void nes_put_cqp_request(struct nes_device *nesdev,
			 struct nes_cqp_request *cqp_request);
void nes_post_cqp_request(struct nes_device *, struct nes_cqp_request *);
int nes_arp_table(struct nes_device *, u32, u8 *, u32);
void nes_mh_fix(unsigned long);
void nes_clc(unsigned long);
void nes_dump_mem(unsigned int, void *, int);
u32 nes_crc32(u32, u32, u32, u32, u8 *, u32, u32, u32);

#endif	/* __NES_H */