1 /*
2  * Copyright (c) 2006, 2007 Cisco Systems.  All rights reserved.
3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses.  You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  *     Redistribution and use in source and binary forms, with or
12  *     without modification, are permitted provided that the following
13  *     conditions are met:
14  *
15  *      - Redistributions of source code must retain the above
16  *        copyright notice, this list of conditions and the following
17  *        disclaimer.
18  *
19  *      - Redistributions in binary form must reproduce the above
20  *        copyright notice, this list of conditions and the following
21  *        disclaimer in the documentation and/or other materials
22  *        provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  */
33 
34 #ifndef MLX4_IB_H
35 #define MLX4_IB_H
36 
37 #include <linux/compiler.h>
38 #include <linux/list.h>
39 #include <linux/mutex.h>
40 #include <linux/idr.h>
41 
42 #include <rdma/ib_verbs.h>
43 #include <rdma/ib_umem.h>
44 #include <rdma/ib_mad.h>
45 #include <rdma/ib_sa.h>
46 
47 #include <linux/mlx4/device.h>
48 #include <linux/mlx4/doorbell.h>
49 #include <linux/mlx4/qp.h>
50 #include <linux/mlx4/cq.h>
51 
52 #define MLX4_IB_DRV_NAME	"mlx4_ib"
53 
54 #ifdef pr_fmt
55 #undef pr_fmt
56 #endif
57 #define pr_fmt(fmt)	"<" MLX4_IB_DRV_NAME "> %s: " fmt, __func__
58 
59 #define mlx4_ib_warn(ibdev, format, arg...) \
60 	dev_warn((ibdev)->dev.parent, MLX4_IB_DRV_NAME ": " format, ## arg)
61 
62 enum {
63 	MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
64 	MLX4_IB_MAX_HEADROOM	 = 2048
65 };
66 
67 #define MLX4_IB_SQ_HEADROOM(shift)	((MLX4_IB_MAX_HEADROOM >> (shift)) + 1)
68 #define MLX4_IB_SQ_MAX_SPARE		(MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))
69 
70 /*module param to indicate if SM assigns the alias_GUID*/
71 extern int mlx4_ib_sm_guid_assign;
72 
73 #define MLX4_IB_UC_STEER_QPN_ALIGN 1
74 #define MLX4_IB_UC_MAX_NUM_QPS     256
75 
76 enum hw_bar_type {
77 	HW_BAR_BF,
78 	HW_BAR_DB,
79 	HW_BAR_CLOCK,
80 	HW_BAR_COUNT
81 };
82 
83 struct mlx4_ib_ucontext {
84 	struct ib_ucontext	ibucontext;
85 	struct mlx4_uar		uar;
86 	struct list_head	db_page_list;
87 	struct mutex		db_page_mutex;
88 	struct list_head	wqn_ranges_list;
89 	struct mutex		wqn_ranges_mutex; /* protect wqn_ranges_list */
90 };
91 
92 struct mlx4_ib_pd {
93 	struct ib_pd		ibpd;
94 	u32			pdn;
95 };
96 
97 struct mlx4_ib_xrcd {
98 	struct ib_xrcd		ibxrcd;
99 	u32			xrcdn;
100 	struct ib_pd	       *pd;
101 	struct ib_cq	       *cq;
102 };
103 
104 struct mlx4_ib_cq_buf {
105 	struct mlx4_buf		buf;
106 	struct mlx4_mtt		mtt;
107 	int			entry_size;
108 };
109 
110 struct mlx4_ib_cq_resize {
111 	struct mlx4_ib_cq_buf	buf;
112 	int			cqe;
113 };
114 
115 struct mlx4_ib_cq {
116 	struct ib_cq		ibcq;
117 	struct mlx4_cq		mcq;
118 	struct mlx4_ib_cq_buf	buf;
119 	struct mlx4_ib_cq_resize *resize_buf;
120 	struct mlx4_db		db;
121 	spinlock_t		lock;
122 	struct mutex		resize_mutex;
123 	struct ib_umem	       *umem;
124 	struct ib_umem	       *resize_umem;
125 	int			create_flags;
126 	/* List of qps that it serves.*/
127 	struct list_head		send_qp_list;
128 	struct list_head		recv_qp_list;
129 };
130 
131 #define MLX4_MR_PAGES_ALIGN 0x40
132 
133 struct mlx4_ib_mr {
134 	struct ib_mr		ibmr;
135 	__be64			*pages;
136 	dma_addr_t		page_map;
137 	u32			npages;
138 	u32			max_pages;
139 	struct mlx4_mr		mmr;
140 	struct ib_umem	       *umem;
141 	size_t			page_map_size;
142 };
143 
144 struct mlx4_ib_mw {
145 	struct ib_mw		ibmw;
146 	struct mlx4_mw		mmw;
147 };
148 
149 #define MAX_REGS_PER_FLOW 2
150 
151 struct mlx4_flow_reg_id {
152 	u64 id;
153 	u64 mirror;
154 };
155 
156 struct mlx4_ib_flow {
157 	struct ib_flow ibflow;
158 	/* translating DMFS verbs sniffer rule to FW API requires two reg IDs */
159 	struct mlx4_flow_reg_id reg_id[MAX_REGS_PER_FLOW];
160 };
161 
162 struct mlx4_ib_wq {
163 	u64		       *wrid;
164 	spinlock_t		lock;
165 	int			wqe_cnt;
166 	int			max_post;
167 	int			max_gs;
168 	int			offset;
169 	int			wqe_shift;
170 	unsigned		head;
171 	unsigned		tail;
172 };
173 
174 enum {
175 	MLX4_IB_QP_CREATE_ROCE_V2_GSI = IB_QP_CREATE_RESERVED_START
176 };
177 
178 enum mlx4_ib_qp_flags {
179 	MLX4_IB_QP_LSO = IB_QP_CREATE_IPOIB_UD_LSO,
180 	MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK,
181 	MLX4_IB_QP_NETIF = IB_QP_CREATE_NETIF_QP,
182 	MLX4_IB_QP_SCATTER_FCS = IB_QP_CREATE_SCATTER_FCS,
183 
184 	/* Mellanox specific flags start from IB_QP_CREATE_RESERVED_START */
185 	MLX4_IB_ROCE_V2_GSI_QP = MLX4_IB_QP_CREATE_ROCE_V2_GSI,
186 	MLX4_IB_SRIOV_TUNNEL_QP = 1 << 30,
187 	MLX4_IB_SRIOV_SQP = 1 << 31,
188 };
189 
190 struct mlx4_ib_gid_entry {
191 	struct list_head	list;
192 	union ib_gid		gid;
193 	int			added;
194 	u8			port;
195 };
196 
197 enum mlx4_ib_qp_type {
198 	/*
199 	 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
200 	 * here (and in that order) since the MAD layer uses them as
201 	 * indices into a 2-entry table.
202 	 */
203 	MLX4_IB_QPT_SMI = IB_QPT_SMI,
204 	MLX4_IB_QPT_GSI = IB_QPT_GSI,
205 
206 	MLX4_IB_QPT_RC = IB_QPT_RC,
207 	MLX4_IB_QPT_UC = IB_QPT_UC,
208 	MLX4_IB_QPT_UD = IB_QPT_UD,
209 	MLX4_IB_QPT_RAW_IPV6 = IB_QPT_RAW_IPV6,
210 	MLX4_IB_QPT_RAW_ETHERTYPE = IB_QPT_RAW_ETHERTYPE,
211 	MLX4_IB_QPT_RAW_PACKET = IB_QPT_RAW_PACKET,
212 	MLX4_IB_QPT_XRC_INI = IB_QPT_XRC_INI,
213 	MLX4_IB_QPT_XRC_TGT = IB_QPT_XRC_TGT,
214 
215 	MLX4_IB_QPT_PROXY_SMI_OWNER	= 1 << 16,
216 	MLX4_IB_QPT_PROXY_SMI		= 1 << 17,
217 	MLX4_IB_QPT_PROXY_GSI		= 1 << 18,
218 	MLX4_IB_QPT_TUN_SMI_OWNER	= 1 << 19,
219 	MLX4_IB_QPT_TUN_SMI		= 1 << 20,
220 	MLX4_IB_QPT_TUN_GSI		= 1 << 21,
221 };
222 
223 #define MLX4_IB_QPT_ANY_SRIOV	(MLX4_IB_QPT_PROXY_SMI_OWNER | \
224 	MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER | \
225 	MLX4_IB_QPT_TUN_SMI | MLX4_IB_QPT_TUN_GSI)
226 
227 enum mlx4_ib_mad_ifc_flags {
228 	MLX4_MAD_IFC_IGNORE_MKEY	= 1,
229 	MLX4_MAD_IFC_IGNORE_BKEY	= 2,
230 	MLX4_MAD_IFC_IGNORE_KEYS	= (MLX4_MAD_IFC_IGNORE_MKEY |
231 					   MLX4_MAD_IFC_IGNORE_BKEY),
232 	MLX4_MAD_IFC_NET_VIEW		= 4,
233 };
234 
235 enum {
236 	MLX4_NUM_TUNNEL_BUFS		= 512,
237 	MLX4_NUM_WIRE_BUFS		= 2048,
238 };
239 
240 struct mlx4_ib_tunnel_header {
241 	struct mlx4_av av;
242 	__be32 remote_qpn;
243 	__be32 qkey;
244 	__be16 vlan;
245 	u8 mac[6];
246 	__be16 pkey_index;
247 	u8 reserved[6];
248 };
249 
250 struct mlx4_ib_buf {
251 	void *addr;
252 	dma_addr_t map;
253 };
254 
255 struct mlx4_rcv_tunnel_hdr {
256 	__be32 flags_src_qp; /* flags[6:5] is defined for VLANs:
257 			      * 0x0 - no vlan was in the packet
258 			      * 0x01 - C-VLAN was in the packet */
259 	u8 g_ml_path; /* gid bit stands for ipv6/4 header in RoCE */
260 	u8 reserved;
261 	__be16 pkey_index;
262 	__be16 sl_vid;
263 	__be16 slid_mac_47_32;
264 	__be32 mac_31_0;
265 };
266 
267 struct mlx4_ib_proxy_sqp_hdr {
268 	struct ib_grh grh;
269 	struct mlx4_rcv_tunnel_hdr tun;
270 }  __packed;
271 
272 struct mlx4_roce_smac_vlan_info {
273 	u64 smac;
274 	int smac_index;
275 	int smac_port;
276 	u64 candidate_smac;
277 	int candidate_smac_index;
278 	int candidate_smac_port;
279 	u16 vid;
280 	int vlan_index;
281 	int vlan_port;
282 	u16 candidate_vid;
283 	int candidate_vlan_index;
284 	int candidate_vlan_port;
285 	int update_vid;
286 };
287 
288 struct mlx4_wqn_range {
289 	int			base_wqn;
290 	int			size;
291 	int			refcount;
292 	bool			dirty;
293 	struct list_head	list;
294 };
295 
296 struct mlx4_ib_rss {
297 	unsigned int		base_qpn_tbl_sz;
298 	u8			flags;
299 	u8			rss_key[MLX4_EN_RSS_KEY_SIZE];
300 };
301 
302 enum {
303 	/*
304 	 * Largest possible UD header: send with GRH and immediate
305 	 * data plus 18 bytes for an Ethernet header with VLAN/802.1Q
306 	 * tag.  (LRH would only use 8 bytes, so Ethernet is the
307 	 * biggest case)
308 	 */
309 	MLX4_IB_UD_HEADER_SIZE		= 82,
310 	MLX4_IB_LSO_HEADER_SPARE	= 128,
311 };
312 
313 struct mlx4_ib_sqp {
314 	int pkey_index;
315 	u32 qkey;
316 	u32 send_psn;
317 	struct ib_ud_header ud_header;
318 	u8 header_buf[MLX4_IB_UD_HEADER_SIZE];
319 	struct ib_qp *roce_v2_gsi;
320 };
321 
322 struct mlx4_ib_qp {
323 	union {
324 		struct ib_qp	ibqp;
325 		struct ib_wq	ibwq;
326 	};
327 	struct mlx4_qp		mqp;
328 	struct mlx4_buf		buf;
329 
330 	struct mlx4_db		db;
331 	struct mlx4_ib_wq	rq;
332 
333 	u32			doorbell_qpn;
334 	__be32			sq_signal_bits;
335 	unsigned		sq_next_wqe;
336 	int			sq_spare_wqes;
337 	struct mlx4_ib_wq	sq;
338 
339 	enum mlx4_ib_qp_type	mlx4_ib_qp_type;
340 	struct ib_umem	       *umem;
341 	struct mlx4_mtt		mtt;
342 	int			buf_size;
343 	struct mutex		mutex;
344 	u16			xrcdn;
345 	u32			flags;
346 	u8			port;
347 	u8			alt_port;
348 	u8			atomic_rd_en;
349 	u8			resp_depth;
350 	u8			sq_no_prefetch;
351 	u8			state;
352 	int			mlx_type;
353 	u32			inl_recv_sz;
354 	struct list_head	gid_list;
355 	struct list_head	steering_rules;
356 	struct mlx4_ib_buf	*sqp_proxy_rcv;
357 	struct mlx4_roce_smac_vlan_info pri;
358 	struct mlx4_roce_smac_vlan_info alt;
359 	u64			reg_id;
360 	struct list_head	qps_list;
361 	struct list_head	cq_recv_list;
362 	struct list_head	cq_send_list;
363 	struct counter_index	*counter_index;
364 	struct mlx4_wqn_range	*wqn_range;
365 	/* Number of RSS QP parents that uses this WQ */
366 	u32			rss_usecnt;
367 	union {
368 		struct mlx4_ib_rss *rss_ctx;
369 		struct mlx4_ib_sqp *sqp;
370 	};
371 };
372 
373 struct mlx4_ib_srq {
374 	struct ib_srq		ibsrq;
375 	struct mlx4_srq		msrq;
376 	struct mlx4_buf		buf;
377 	struct mlx4_db		db;
378 	u64		       *wrid;
379 	spinlock_t		lock;
380 	int			head;
381 	int			tail;
382 	u16			wqe_ctr;
383 	struct ib_umem	       *umem;
384 	struct mlx4_mtt		mtt;
385 	struct mutex		mutex;
386 };
387 
388 struct mlx4_ib_ah {
389 	struct ib_ah		ibah;
390 	union mlx4_ext_av       av;
391 };
392 
393 struct mlx4_ib_rwq_ind_table {
394 	struct ib_rwq_ind_table ib_rwq_ind_tbl;
395 };
396 
397 /****************************************/
398 /* alias guid support */
399 /****************************************/
400 #define NUM_PORT_ALIAS_GUID		2
401 #define NUM_ALIAS_GUID_IN_REC		8
402 #define NUM_ALIAS_GUID_REC_IN_PORT	16
403 #define GUID_REC_SIZE			8
404 #define NUM_ALIAS_GUID_PER_PORT		128
405 #define MLX4_NOT_SET_GUID		(0x00LL)
406 #define MLX4_GUID_FOR_DELETE_VAL	(~(0x00LL))
407 
408 enum mlx4_guid_alias_rec_status {
409 	MLX4_GUID_INFO_STATUS_IDLE,
410 	MLX4_GUID_INFO_STATUS_SET,
411 };
412 
413 #define GUID_STATE_NEED_PORT_INIT 0x01
414 
415 enum mlx4_guid_alias_rec_method {
416 	MLX4_GUID_INFO_RECORD_SET	= IB_MGMT_METHOD_SET,
417 	MLX4_GUID_INFO_RECORD_DELETE	= IB_SA_METHOD_DELETE,
418 };
419 
420 struct mlx4_sriov_alias_guid_info_rec_det {
421 	u8 all_recs[GUID_REC_SIZE * NUM_ALIAS_GUID_IN_REC];
422 	ib_sa_comp_mask guid_indexes; /*indicates what from the 8 records are valid*/
423 	enum mlx4_guid_alias_rec_status status; /*indicates the administraively status of the record.*/
424 	unsigned int guids_retry_schedule[NUM_ALIAS_GUID_IN_REC];
425 	u64 time_to_run;
426 };
427 
428 struct mlx4_sriov_alias_guid_port_rec_det {
429 	struct mlx4_sriov_alias_guid_info_rec_det all_rec_per_port[NUM_ALIAS_GUID_REC_IN_PORT];
430 	struct workqueue_struct *wq;
431 	struct delayed_work alias_guid_work;
432 	u8 port;
433 	u32 state_flags;
434 	struct mlx4_sriov_alias_guid *parent;
435 	struct list_head cb_list;
436 };
437 
438 struct mlx4_sriov_alias_guid {
439 	struct mlx4_sriov_alias_guid_port_rec_det ports_guid[MLX4_MAX_PORTS];
440 	spinlock_t ag_work_lock;
441 	struct ib_sa_client *sa_client;
442 };
443 
444 struct mlx4_ib_demux_work {
445 	struct work_struct	work;
446 	struct mlx4_ib_dev     *dev;
447 	int			slave;
448 	int			do_init;
449 	u8			port;
450 
451 };
452 
453 struct mlx4_ib_tun_tx_buf {
454 	struct mlx4_ib_buf buf;
455 	struct ib_ah *ah;
456 };
457 
458 struct mlx4_ib_demux_pv_qp {
459 	struct ib_qp *qp;
460 	enum ib_qp_type proxy_qpt;
461 	struct mlx4_ib_buf *ring;
462 	struct mlx4_ib_tun_tx_buf *tx_ring;
463 	spinlock_t tx_lock;
464 	unsigned tx_ix_head;
465 	unsigned tx_ix_tail;
466 };
467 
468 enum mlx4_ib_demux_pv_state {
469 	DEMUX_PV_STATE_DOWN,
470 	DEMUX_PV_STATE_STARTING,
471 	DEMUX_PV_STATE_ACTIVE,
472 	DEMUX_PV_STATE_DOWNING,
473 };
474 
475 struct mlx4_ib_demux_pv_ctx {
476 	int port;
477 	int slave;
478 	enum mlx4_ib_demux_pv_state state;
479 	int has_smi;
480 	struct ib_device *ib_dev;
481 	struct ib_cq *cq;
482 	struct ib_pd *pd;
483 	struct work_struct work;
484 	struct workqueue_struct *wq;
485 	struct workqueue_struct *wi_wq;
486 	struct mlx4_ib_demux_pv_qp qp[2];
487 };
488 
489 struct mlx4_ib_demux_ctx {
490 	struct ib_device *ib_dev;
491 	int port;
492 	struct workqueue_struct *wq;
493 	struct workqueue_struct *wi_wq;
494 	struct workqueue_struct *ud_wq;
495 	spinlock_t ud_lock;
496 	atomic64_t subnet_prefix;
497 	__be64 guid_cache[128];
498 	struct mlx4_ib_dev *dev;
499 	/* the following lock protects both mcg_table and mcg_mgid0_list */
500 	struct mutex		mcg_table_lock;
501 	struct rb_root		mcg_table;
502 	struct list_head	mcg_mgid0_list;
503 	struct workqueue_struct	*mcg_wq;
504 	struct mlx4_ib_demux_pv_ctx **tun;
505 	atomic_t tid;
506 	int    flushing; /* flushing the work queue */
507 };
508 
509 struct mlx4_ib_sriov {
510 	struct mlx4_ib_demux_ctx demux[MLX4_MAX_PORTS];
511 	struct mlx4_ib_demux_pv_ctx *sqps[MLX4_MAX_PORTS];
512 	/* when using this spinlock you should use "irq" because
513 	 * it may be called from interrupt context.*/
514 	spinlock_t going_down_lock;
515 	int is_going_down;
516 
517 	struct mlx4_sriov_alias_guid alias_guid;
518 
519 	/* CM paravirtualization fields */
520 	struct xarray pv_id_table;
521 	u32 pv_id_next;
522 	spinlock_t id_map_lock;
523 	struct rb_root sl_id_map;
524 	struct list_head cm_list;
525 	struct xarray xa_rej_tmout;
526 };
527 
528 struct gid_cache_context {
529 	int real_index;
530 	int refcount;
531 };
532 
533 struct gid_entry {
534 	union ib_gid	gid;
535 	enum ib_gid_type gid_type;
536 	struct gid_cache_context *ctx;
537 	u16 vlan_id;
538 };
539 
540 struct mlx4_port_gid_table {
541 	struct gid_entry gids[MLX4_MAX_PORT_GIDS];
542 };
543 
544 struct mlx4_ib_iboe {
545 	spinlock_t		lock;
546 	struct net_device      *netdevs[MLX4_MAX_PORTS];
547 	atomic64_t		mac[MLX4_MAX_PORTS];
548 	struct notifier_block 	nb;
549 	struct mlx4_port_gid_table gids[MLX4_MAX_PORTS];
550 	enum ib_port_state	last_port_state[MLX4_MAX_PORTS];
551 };
552 
553 struct pkey_mgt {
554 	u8			virt2phys_pkey[MLX4_MFUNC_MAX][MLX4_MAX_PORTS][MLX4_MAX_PORT_PKEYS];
555 	u16			phys_pkey_cache[MLX4_MAX_PORTS][MLX4_MAX_PORT_PKEYS];
556 	struct list_head	pkey_port_list[MLX4_MFUNC_MAX];
557 	struct kobject	       *device_parent[MLX4_MFUNC_MAX];
558 };
559 
560 struct mlx4_ib_iov_sysfs_attr {
561 	void *ctx;
562 	struct kobject *kobj;
563 	unsigned long data;
564 	u32 entry_num;
565 	char name[15];
566 	struct device_attribute dentry;
567 	struct device *dev;
568 };
569 
570 struct mlx4_ib_iov_sysfs_attr_ar {
571 	struct mlx4_ib_iov_sysfs_attr dentries[3 * NUM_ALIAS_GUID_PER_PORT + 1];
572 };
573 
574 struct mlx4_ib_iov_port {
575 	char name[100];
576 	u8 num;
577 	struct mlx4_ib_dev *dev;
578 	struct list_head list;
579 	struct mlx4_ib_iov_sysfs_attr_ar *dentr_ar;
580 	struct ib_port_attr attr;
581 	struct kobject	*cur_port;
582 	struct kobject	*admin_alias_parent;
583 	struct kobject	*gids_parent;
584 	struct kobject	*pkeys_parent;
585 	struct kobject	*mcgs_parent;
586 	struct mlx4_ib_iov_sysfs_attr mcg_dentry;
587 };
588 
589 struct counter_index {
590 	struct  list_head       list;
591 	u32		index;
592 	u8		allocated;
593 };
594 
595 struct mlx4_ib_counters {
596 	struct list_head        counters_list;
597 	struct mutex            mutex; /* mutex for accessing counters list */
598 	u32			default_counter;
599 };
600 
601 #define MLX4_DIAG_COUNTERS_TYPES 2
602 
603 struct mlx4_ib_diag_counters {
604 	const char **name;
605 	u32 *offset;
606 	u32 num_counters;
607 };
608 
609 struct mlx4_ib_dev {
610 	struct ib_device	ib_dev;
611 	struct mlx4_dev	       *dev;
612 	int			num_ports;
613 	void __iomem	       *uar_map;
614 
615 	struct mlx4_uar		priv_uar;
616 	u32			priv_pdn;
617 	MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
618 
619 	struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
620 	struct ib_ah	       *sm_ah[MLX4_MAX_PORTS];
621 	spinlock_t		sm_lock;
622 	atomic64_t		sl2vl[MLX4_MAX_PORTS];
623 	struct mlx4_ib_sriov	sriov;
624 
625 	struct mutex		cap_mask_mutex;
626 	bool			ib_active;
627 	struct mlx4_ib_iboe	iboe;
628 	struct mlx4_ib_counters counters_table[MLX4_MAX_PORTS];
629 	int		       *eq_table;
630 	struct kobject	       *iov_parent;
631 	struct kobject	       *ports_parent;
632 	struct kobject	       *dev_ports_parent[MLX4_MFUNC_MAX];
633 	struct mlx4_ib_iov_port	iov_ports[MLX4_MAX_PORTS];
634 	struct pkey_mgt		pkeys;
635 	unsigned long *ib_uc_qpns_bitmap;
636 	int steer_qpn_count;
637 	int steer_qpn_base;
638 	int steering_support;
639 	struct mlx4_ib_qp      *qp1_proxy[MLX4_MAX_PORTS];
640 	/* lock when destroying qp1_proxy and getting netdev events */
641 	struct mutex		qp1_proxy_lock[MLX4_MAX_PORTS];
642 	u8			bond_next_port;
643 	/* protect resources needed as part of reset flow */
644 	spinlock_t		reset_flow_resource_lock;
645 	struct list_head		qp_list;
646 	struct mlx4_ib_diag_counters diag_counters[MLX4_DIAG_COUNTERS_TYPES];
647 };
648 
649 struct ib_event_work {
650 	struct work_struct	work;
651 	struct mlx4_ib_dev	*ib_dev;
652 	struct mlx4_eqe		ib_eqe;
653 	int			port;
654 };
655 
656 struct mlx4_ib_qp_tunnel_init_attr {
657 	struct ib_qp_init_attr init_attr;
658 	int slave;
659 	enum ib_qp_type proxy_qp_type;
660 	u8 port;
661 };
662 
663 struct mlx4_uverbs_ex_query_device {
664 	__u32 comp_mask;
665 	__u32 reserved;
666 };
667 
668 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
669 {
670 	return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
671 }
672 
673 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
674 {
675 	return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
676 }
677 
678 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
679 {
680 	return container_of(ibpd, struct mlx4_ib_pd, ibpd);
681 }
682 
683 static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
684 {
685 	return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
686 }
687 
688 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
689 {
690 	return container_of(ibcq, struct mlx4_ib_cq, ibcq);
691 }
692 
693 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
694 {
695 	return container_of(mcq, struct mlx4_ib_cq, mcq);
696 }
697 
698 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
699 {
700 	return container_of(ibmr, struct mlx4_ib_mr, ibmr);
701 }
702 
703 static inline struct mlx4_ib_mw *to_mmw(struct ib_mw *ibmw)
704 {
705 	return container_of(ibmw, struct mlx4_ib_mw, ibmw);
706 }
707 
708 static inline struct mlx4_ib_flow *to_mflow(struct ib_flow *ibflow)
709 {
710 	return container_of(ibflow, struct mlx4_ib_flow, ibflow);
711 }
712 
713 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
714 {
715 	return container_of(ibqp, struct mlx4_ib_qp, ibqp);
716 }
717 
718 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
719 {
720 	return container_of(mqp, struct mlx4_ib_qp, mqp);
721 }
722 
723 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
724 {
725 	return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
726 }
727 
728 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
729 {
730 	return container_of(msrq, struct mlx4_ib_srq, msrq);
731 }
732 
733 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
734 {
735 	return container_of(ibah, struct mlx4_ib_ah, ibah);
736 }
737 
738 static inline u8 mlx4_ib_bond_next_port(struct mlx4_ib_dev *dev)
739 {
740 	dev->bond_next_port = (dev->bond_next_port + 1) % dev->num_ports;
741 
742 	return dev->bond_next_port + 1;
743 }
744 
745 int mlx4_ib_init_sriov(struct mlx4_ib_dev *dev);
746 void mlx4_ib_close_sriov(struct mlx4_ib_dev *dev);
747 
748 int mlx4_ib_db_map_user(struct ib_udata *udata, unsigned long virt,
749 			struct mlx4_db *db);
750 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
751 
752 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
753 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
754 			   struct ib_umem *umem);
755 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
756 				  u64 virt_addr, int access_flags,
757 				  struct ib_udata *udata);
758 int mlx4_ib_dereg_mr(struct ib_mr *mr, struct ib_udata *udata);
759 int mlx4_ib_alloc_mw(struct ib_mw *mw, struct ib_udata *udata);
760 int mlx4_ib_dealloc_mw(struct ib_mw *mw);
761 struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
762 			       u32 max_num_sg);
763 int mlx4_ib_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
764 		      unsigned int *sg_offset);
765 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
766 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
767 int mlx4_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
768 		      struct ib_udata *udata);
769 int mlx4_ib_destroy_cq(struct ib_cq *cq, struct ib_udata *udata);
770 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
771 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
772 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
773 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
774 
775 int mlx4_ib_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr,
776 		      struct ib_udata *udata);
777 int mlx4_ib_create_ah_slave(struct ib_ah *ah, struct rdma_ah_attr *ah_attr,
778 			    int slave_sgid_index, u8 *s_mac, u16 vlan_tag);
779 int mlx4_ib_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr);
780 static inline int mlx4_ib_destroy_ah(struct ib_ah *ah, u32 flags)
781 {
782 	return 0;
783 }
784 
785 int mlx4_ib_create_srq(struct ib_srq *srq, struct ib_srq_init_attr *init_attr,
786 		       struct ib_udata *udata);
787 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
788 		       enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
789 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
790 int mlx4_ib_destroy_srq(struct ib_srq *srq, struct ib_udata *udata);
791 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
792 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
793 			  const struct ib_recv_wr **bad_wr);
794 
795 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
796 				struct ib_qp_init_attr *init_attr,
797 				struct ib_udata *udata);
798 int mlx4_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata);
799 void mlx4_ib_drain_sq(struct ib_qp *qp);
800 void mlx4_ib_drain_rq(struct ib_qp *qp);
801 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
802 		      int attr_mask, struct ib_udata *udata);
803 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
804 		     struct ib_qp_init_attr *qp_init_attr);
805 int mlx4_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
806 		      const struct ib_send_wr **bad_wr);
807 int mlx4_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
808 		      const struct ib_recv_wr **bad_wr);
809 
810 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int mad_ifc_flags,
811 		 int port, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
812 		 const void *in_mad, void *response_mad);
813 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
814 			const struct ib_wc *in_wc, const struct ib_grh *in_grh,
815 			const struct ib_mad *in, struct ib_mad *out,
816 			size_t *out_mad_size, u16 *out_mad_pkey_index);
817 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
818 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
819 
820 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
821 			 struct ib_port_attr *props, int netw_view);
822 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
823 			 u16 *pkey, int netw_view);
824 
825 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
826 			union ib_gid *gid, int netw_view);
827 
828 static inline bool mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
829 {
830 	u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
831 
832 	if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
833 		return true;
834 
835 	return !!(ah->av.ib.g_slid & 0x80);
836 }
837 
838 int mlx4_ib_mcg_port_init(struct mlx4_ib_demux_ctx *ctx);
839 void mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy_wq);
840 void clean_vf_mcast(struct mlx4_ib_demux_ctx *ctx, int slave);
841 int mlx4_ib_mcg_init(void);
842 void mlx4_ib_mcg_destroy(void);
843 
844 int mlx4_ib_find_real_gid(struct ib_device *ibdev, u8 port, __be64 guid);
845 
846 int mlx4_ib_mcg_multiplex_handler(struct ib_device *ibdev, int port, int slave,
847 				  struct ib_sa_mad *sa_mad);
848 int mlx4_ib_mcg_demux_handler(struct ib_device *ibdev, int port, int slave,
849 			      struct ib_sa_mad *mad);
850 
851 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
852 		   union ib_gid *gid);
853 
854 void mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u8 port_num,
855 			    enum ib_event_type type);
856 
857 void mlx4_ib_tunnels_update_work(struct work_struct *work);
858 
859 int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port,
860 			  enum ib_qp_type qpt, struct ib_wc *wc,
861 			  struct ib_grh *grh, struct ib_mad *mad);
862 
863 int mlx4_ib_send_to_wire(struct mlx4_ib_dev *dev, int slave, u8 port,
864 			 enum ib_qp_type dest_qpt, u16 pkey_index, u32 remote_qpn,
865 			 u32 qkey, struct rdma_ah_attr *attr, u8 *s_mac,
866 			 u16 vlan_id, struct ib_mad *mad);
867 
868 __be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx);
869 
870 int mlx4_ib_demux_cm_handler(struct ib_device *ibdev, int port, int *slave,
871 		struct ib_mad *mad);
872 
873 int mlx4_ib_multiplex_cm_handler(struct ib_device *ibdev, int port, int slave_id,
874 		struct ib_mad *mad);
875 
876 void mlx4_ib_cm_paravirt_init(struct mlx4_ib_dev *dev);
877 void mlx4_ib_cm_paravirt_clean(struct mlx4_ib_dev *dev, int slave_id);
878 
879 /* alias guid support */
880 void mlx4_ib_init_alias_guid_work(struct mlx4_ib_dev *dev, int port);
881 int mlx4_ib_init_alias_guid_service(struct mlx4_ib_dev *dev);
882 void mlx4_ib_destroy_alias_guid_service(struct mlx4_ib_dev *dev);
883 void mlx4_ib_invalidate_all_guid_record(struct mlx4_ib_dev *dev, int port);
884 
885 void mlx4_ib_notify_slaves_on_guid_change(struct mlx4_ib_dev *dev,
886 					  int block_num,
887 					  u8 port_num, u8 *p_data);
888 
889 void mlx4_ib_update_cache_on_guid_change(struct mlx4_ib_dev *dev,
890 					 int block_num, u8 port_num,
891 					 u8 *p_data);
892 
893 int add_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
894 			    struct attribute *attr);
895 void del_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
896 			     struct attribute *attr);
897 ib_sa_comp_mask mlx4_ib_get_aguid_comp_mask_from_ix(int index);
898 void mlx4_ib_slave_alias_guid_event(struct mlx4_ib_dev *dev, int slave,
899 				    int port, int slave_init);
900 
901 int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *device) ;
902 
903 void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device);
904 
905 __be64 mlx4_ib_gen_node_guid(void);
906 
907 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn);
908 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count);
909 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
910 			 int is_attach);
911 struct ib_mr *mlx4_ib_rereg_user_mr(struct ib_mr *mr, int flags, u64 start,
912 				    u64 length, u64 virt_addr,
913 				    int mr_access_flags, struct ib_pd *pd,
914 				    struct ib_udata *udata);
915 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
916 				    const struct ib_gid_attr *attr);
917 
918 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
919 				     int port);
920 
921 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port);
922 
923 struct ib_wq *mlx4_ib_create_wq(struct ib_pd *pd,
924 				struct ib_wq_init_attr *init_attr,
925 				struct ib_udata *udata);
926 int mlx4_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata);
927 int mlx4_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
928 		      u32 wq_attr_mask, struct ib_udata *udata);
929 
930 int mlx4_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl,
931 				 struct ib_rwq_ind_table_init_attr *init_attr,
932 				 struct ib_udata *udata);
933 static inline int
934 mlx4_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table)
935 {
936 	return 0;
937 }
938 int mlx4_ib_umem_calc_optimal_mtt_size(struct ib_umem *umem, u64 start_va,
939 				       int *num_of_mtts);
940 
941 #endif /* MLX4_IB_H */
942