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 #include <linux/notifier.h>
42 
43 #include <rdma/ib_verbs.h>
44 #include <rdma/ib_umem.h>
45 #include <rdma/ib_mad.h>
46 #include <rdma/ib_sa.h>
47 
48 #include <linux/mlx4/device.h>
49 #include <linux/mlx4/doorbell.h>
50 #include <linux/mlx4/qp.h>
51 #include <linux/mlx4/cq.h>
52 
53 #define MLX4_IB_DRV_NAME	"mlx4_ib"
54 
55 #ifdef pr_fmt
56 #undef pr_fmt
57 #endif
58 #define pr_fmt(fmt)	"<" MLX4_IB_DRV_NAME "> %s: " fmt, __func__
59 
60 #define mlx4_ib_warn(ibdev, format, arg...) \
61 	dev_warn((ibdev)->dev.parent, MLX4_IB_DRV_NAME ": " format, ## arg)
62 
63 enum {
64 	MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
65 	MLX4_IB_MAX_HEADROOM	 = 2048
66 };
67 
68 #define MLX4_IB_SQ_HEADROOM(shift)	((MLX4_IB_MAX_HEADROOM >> (shift)) + 1)
69 #define MLX4_IB_SQ_MAX_SPARE		(MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))
70 
71 /*module param to indicate if SM assigns the alias_GUID*/
72 extern int mlx4_ib_sm_guid_assign;
73 
74 #define MLX4_IB_UC_STEER_QPN_ALIGN 1
75 #define MLX4_IB_UC_MAX_NUM_QPS     256
76 
77 enum hw_bar_type {
78 	HW_BAR_BF,
79 	HW_BAR_DB,
80 	HW_BAR_CLOCK,
81 	HW_BAR_COUNT
82 };
83 
84 struct mlx4_ib_ucontext {
85 	struct ib_ucontext	ibucontext;
86 	struct mlx4_uar		uar;
87 	struct list_head	db_page_list;
88 	struct mutex		db_page_mutex;
89 	struct list_head	wqn_ranges_list;
90 	struct mutex		wqn_ranges_mutex; /* protect wqn_ranges_list */
91 };
92 
93 struct mlx4_ib_pd {
94 	struct ib_pd		ibpd;
95 	u32			pdn;
96 };
97 
98 struct mlx4_ib_xrcd {
99 	struct ib_xrcd		ibxrcd;
100 	u32			xrcdn;
101 	struct ib_pd	       *pd;
102 	struct ib_cq	       *cq;
103 };
104 
105 struct mlx4_ib_cq_buf {
106 	struct mlx4_buf		buf;
107 	struct mlx4_mtt		mtt;
108 	int			entry_size;
109 };
110 
111 struct mlx4_ib_cq_resize {
112 	struct mlx4_ib_cq_buf	buf;
113 	int			cqe;
114 };
115 
116 struct mlx4_ib_cq {
117 	struct ib_cq		ibcq;
118 	struct mlx4_cq		mcq;
119 	struct mlx4_ib_cq_buf	buf;
120 	struct mlx4_ib_cq_resize *resize_buf;
121 	struct mlx4_db		db;
122 	spinlock_t		lock;
123 	struct mutex		resize_mutex;
124 	struct ib_umem	       *umem;
125 	struct ib_umem	       *resize_umem;
126 	int			create_flags;
127 	/* List of qps that it serves.*/
128 	struct list_head		send_qp_list;
129 	struct list_head		recv_qp_list;
130 };
131 
132 #define MLX4_MR_PAGES_ALIGN 0x40
133 
134 struct mlx4_ib_mr {
135 	struct ib_mr		ibmr;
136 	__be64			*pages;
137 	dma_addr_t		page_map;
138 	u32			npages;
139 	u32			max_pages;
140 	struct mlx4_mr		mmr;
141 	struct ib_umem	       *umem;
142 	size_t			page_map_size;
143 };
144 
145 struct mlx4_ib_mw {
146 	struct ib_mw		ibmw;
147 	struct mlx4_mw		mmw;
148 };
149 
150 #define MAX_REGS_PER_FLOW 2
151 
152 struct mlx4_flow_reg_id {
153 	u64 id;
154 	u64 mirror;
155 };
156 
157 struct mlx4_ib_flow {
158 	struct ib_flow ibflow;
159 	/* translating DMFS verbs sniffer rule to FW API requires two reg IDs */
160 	struct mlx4_flow_reg_id reg_id[MAX_REGS_PER_FLOW];
161 };
162 
163 struct mlx4_ib_wq {
164 	u64		       *wrid;
165 	spinlock_t		lock;
166 	int			wqe_cnt;
167 	int			max_post;
168 	int			max_gs;
169 	int			offset;
170 	int			wqe_shift;
171 	unsigned		head;
172 	unsigned		tail;
173 };
174 
175 enum {
176 	MLX4_IB_QP_CREATE_ROCE_V2_GSI = IB_QP_CREATE_RESERVED_START
177 };
178 
179 enum mlx4_ib_qp_flags {
180 	MLX4_IB_QP_LSO = IB_QP_CREATE_IPOIB_UD_LSO,
181 	MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK,
182 	MLX4_IB_QP_NETIF = IB_QP_CREATE_NETIF_QP,
183 	MLX4_IB_QP_SCATTER_FCS = IB_QP_CREATE_SCATTER_FCS,
184 
185 	/* Mellanox specific flags start from IB_QP_CREATE_RESERVED_START */
186 	MLX4_IB_ROCE_V2_GSI_QP = MLX4_IB_QP_CREATE_ROCE_V2_GSI,
187 	MLX4_IB_SRIOV_TUNNEL_QP = 1 << 30,
188 	MLX4_IB_SRIOV_SQP = 1 << 31,
189 };
190 
191 struct mlx4_ib_gid_entry {
192 	struct list_head	list;
193 	union ib_gid		gid;
194 	int			added;
195 	u8			port;
196 };
197 
198 enum mlx4_ib_qp_type {
199 	/*
200 	 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
201 	 * here (and in that order) since the MAD layer uses them as
202 	 * indices into a 2-entry table.
203 	 */
204 	MLX4_IB_QPT_SMI = IB_QPT_SMI,
205 	MLX4_IB_QPT_GSI = IB_QPT_GSI,
206 
207 	MLX4_IB_QPT_RC = IB_QPT_RC,
208 	MLX4_IB_QPT_UC = IB_QPT_UC,
209 	MLX4_IB_QPT_UD = IB_QPT_UD,
210 	MLX4_IB_QPT_RAW_IPV6 = IB_QPT_RAW_IPV6,
211 	MLX4_IB_QPT_RAW_ETHERTYPE = IB_QPT_RAW_ETHERTYPE,
212 	MLX4_IB_QPT_RAW_PACKET = IB_QPT_RAW_PACKET,
213 	MLX4_IB_QPT_XRC_INI = IB_QPT_XRC_INI,
214 	MLX4_IB_QPT_XRC_TGT = IB_QPT_XRC_TGT,
215 
216 	MLX4_IB_QPT_PROXY_SMI_OWNER	= 1 << 16,
217 	MLX4_IB_QPT_PROXY_SMI		= 1 << 17,
218 	MLX4_IB_QPT_PROXY_GSI		= 1 << 18,
219 	MLX4_IB_QPT_TUN_SMI_OWNER	= 1 << 19,
220 	MLX4_IB_QPT_TUN_SMI		= 1 << 20,
221 	MLX4_IB_QPT_TUN_GSI		= 1 << 21,
222 };
223 
224 #define MLX4_IB_QPT_ANY_SRIOV	(MLX4_IB_QPT_PROXY_SMI_OWNER | \
225 	MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER | \
226 	MLX4_IB_QPT_TUN_SMI | MLX4_IB_QPT_TUN_GSI)
227 
228 enum mlx4_ib_mad_ifc_flags {
229 	MLX4_MAD_IFC_IGNORE_MKEY	= 1,
230 	MLX4_MAD_IFC_IGNORE_BKEY	= 2,
231 	MLX4_MAD_IFC_IGNORE_KEYS	= (MLX4_MAD_IFC_IGNORE_MKEY |
232 					   MLX4_MAD_IFC_IGNORE_BKEY),
233 	MLX4_MAD_IFC_NET_VIEW		= 4,
234 };
235 
236 enum {
237 	MLX4_NUM_TUNNEL_BUFS		= 512,
238 	MLX4_NUM_WIRE_BUFS		= 2048,
239 };
240 
241 struct mlx4_ib_tunnel_header {
242 	struct mlx4_av av;
243 	__be32 remote_qpn;
244 	__be32 qkey;
245 	__be16 vlan;
246 	u8 mac[6];
247 	__be16 pkey_index;
248 	u8 reserved[6];
249 };
250 
251 struct mlx4_ib_buf {
252 	void *addr;
253 	dma_addr_t map;
254 };
255 
256 struct mlx4_rcv_tunnel_hdr {
257 	__be32 flags_src_qp; /* flags[6:5] is defined for VLANs:
258 			      * 0x0 - no vlan was in the packet
259 			      * 0x01 - C-VLAN was in the packet */
260 	u8 g_ml_path; /* gid bit stands for ipv6/4 header in RoCE */
261 	u8 reserved;
262 	__be16 pkey_index;
263 	__be16 sl_vid;
264 	__be16 slid_mac_47_32;
265 	__be32 mac_31_0;
266 };
267 
268 struct mlx4_ib_proxy_sqp_hdr {
269 	struct ib_grh grh;
270 	struct mlx4_rcv_tunnel_hdr tun;
271 }  __packed;
272 
273 struct mlx4_roce_smac_vlan_info {
274 	u64 smac;
275 	int smac_index;
276 	int smac_port;
277 	u64 candidate_smac;
278 	int candidate_smac_index;
279 	int candidate_smac_port;
280 	u16 vid;
281 	int vlan_index;
282 	int vlan_port;
283 	u16 candidate_vid;
284 	int candidate_vlan_index;
285 	int candidate_vlan_port;
286 	int update_vid;
287 };
288 
289 struct mlx4_wqn_range {
290 	int			base_wqn;
291 	int			size;
292 	int			refcount;
293 	bool			dirty;
294 	struct list_head	list;
295 };
296 
297 struct mlx4_ib_rss {
298 	unsigned int		base_qpn_tbl_sz;
299 	u8			flags;
300 	u8			rss_key[MLX4_EN_RSS_KEY_SIZE];
301 };
302 
303 enum {
304 	/*
305 	 * Largest possible UD header: send with GRH and immediate
306 	 * data plus 18 bytes for an Ethernet header with VLAN/802.1Q
307 	 * tag.  (LRH would only use 8 bytes, so Ethernet is the
308 	 * biggest case)
309 	 */
310 	MLX4_IB_UD_HEADER_SIZE		= 82,
311 	MLX4_IB_LSO_HEADER_SPARE	= 128,
312 };
313 
314 struct mlx4_ib_sqp {
315 	int pkey_index;
316 	u32 qkey;
317 	u32 send_psn;
318 	struct ib_ud_header ud_header;
319 	u8 header_buf[MLX4_IB_UD_HEADER_SIZE];
320 	struct ib_qp *roce_v2_gsi;
321 };
322 
323 struct mlx4_ib_qp {
324 	union {
325 		struct ib_qp	ibqp;
326 		struct ib_wq	ibwq;
327 	};
328 	struct mlx4_qp		mqp;
329 	struct mlx4_buf		buf;
330 
331 	struct mlx4_db		db;
332 	struct mlx4_ib_wq	rq;
333 
334 	u32			doorbell_qpn;
335 	__be32			sq_signal_bits;
336 	unsigned		sq_next_wqe;
337 	int			sq_spare_wqes;
338 	struct mlx4_ib_wq	sq;
339 
340 	enum mlx4_ib_qp_type	mlx4_ib_qp_type;
341 	struct ib_umem	       *umem;
342 	struct mlx4_mtt		mtt;
343 	int			buf_size;
344 	struct mutex		mutex;
345 	u16			xrcdn;
346 	u32			flags;
347 	u8			port;
348 	u8			alt_port;
349 	u8			atomic_rd_en;
350 	u8			resp_depth;
351 	u8			sq_no_prefetch;
352 	u8			state;
353 	int			mlx_type;
354 	u32			inl_recv_sz;
355 	struct list_head	gid_list;
356 	struct list_head	steering_rules;
357 	struct mlx4_ib_buf	*sqp_proxy_rcv;
358 	struct mlx4_roce_smac_vlan_info pri;
359 	struct mlx4_roce_smac_vlan_info alt;
360 	u64			reg_id;
361 	struct list_head	qps_list;
362 	struct list_head	cq_recv_list;
363 	struct list_head	cq_send_list;
364 	struct counter_index	*counter_index;
365 	struct mlx4_wqn_range	*wqn_range;
366 	/* Number of RSS QP parents that uses this WQ */
367 	u32			rss_usecnt;
368 	union {
369 		struct mlx4_ib_rss *rss_ctx;
370 		struct mlx4_ib_sqp *sqp;
371 	};
372 };
373 
374 struct mlx4_ib_srq {
375 	struct ib_srq		ibsrq;
376 	struct mlx4_srq		msrq;
377 	struct mlx4_buf		buf;
378 	struct mlx4_db		db;
379 	u64		       *wrid;
380 	spinlock_t		lock;
381 	int			head;
382 	int			tail;
383 	u16			wqe_ctr;
384 	struct ib_umem	       *umem;
385 	struct mlx4_mtt		mtt;
386 	struct mutex		mutex;
387 };
388 
389 struct mlx4_ib_ah {
390 	struct ib_ah		ibah;
391 	union mlx4_ext_av       av;
392 };
393 
394 struct mlx4_ib_rwq_ind_table {
395 	struct ib_rwq_ind_table ib_rwq_ind_tbl;
396 };
397 
398 /****************************************/
399 /* alias guid support */
400 /****************************************/
401 #define NUM_PORT_ALIAS_GUID		2
402 #define NUM_ALIAS_GUID_IN_REC		8
403 #define NUM_ALIAS_GUID_REC_IN_PORT	16
404 #define GUID_REC_SIZE			8
405 #define NUM_ALIAS_GUID_PER_PORT		128
406 #define MLX4_NOT_SET_GUID		(0x00LL)
407 #define MLX4_GUID_FOR_DELETE_VAL	(~(0x00LL))
408 
409 enum mlx4_guid_alias_rec_status {
410 	MLX4_GUID_INFO_STATUS_IDLE,
411 	MLX4_GUID_INFO_STATUS_SET,
412 };
413 
414 #define GUID_STATE_NEED_PORT_INIT 0x01
415 
416 enum mlx4_guid_alias_rec_method {
417 	MLX4_GUID_INFO_RECORD_SET	= IB_MGMT_METHOD_SET,
418 	MLX4_GUID_INFO_RECORD_DELETE	= IB_SA_METHOD_DELETE,
419 };
420 
421 struct mlx4_sriov_alias_guid_info_rec_det {
422 	u8 all_recs[GUID_REC_SIZE * NUM_ALIAS_GUID_IN_REC];
423 	ib_sa_comp_mask guid_indexes; /*indicates what from the 8 records are valid*/
424 	enum mlx4_guid_alias_rec_status status; /*indicates the administraively status of the record.*/
425 	unsigned int guids_retry_schedule[NUM_ALIAS_GUID_IN_REC];
426 	u64 time_to_run;
427 };
428 
429 struct mlx4_sriov_alias_guid_port_rec_det {
430 	struct mlx4_sriov_alias_guid_info_rec_det all_rec_per_port[NUM_ALIAS_GUID_REC_IN_PORT];
431 	struct workqueue_struct *wq;
432 	struct delayed_work alias_guid_work;
433 	u32 port;
434 	u32 state_flags;
435 	struct mlx4_sriov_alias_guid *parent;
436 	struct list_head cb_list;
437 };
438 
439 struct mlx4_sriov_alias_guid {
440 	struct mlx4_sriov_alias_guid_port_rec_det ports_guid[MLX4_MAX_PORTS];
441 	spinlock_t ag_work_lock;
442 	struct ib_sa_client *sa_client;
443 };
444 
445 struct mlx4_ib_demux_work {
446 	struct work_struct	work;
447 	struct mlx4_ib_dev     *dev;
448 	int			slave;
449 	int			do_init;
450 	u8			port;
451 
452 };
453 
454 struct mlx4_ib_tun_tx_buf {
455 	struct mlx4_ib_buf buf;
456 	struct ib_ah *ah;
457 };
458 
459 struct mlx4_ib_demux_pv_qp {
460 	struct ib_qp *qp;
461 	enum ib_qp_type proxy_qpt;
462 	struct mlx4_ib_buf *ring;
463 	struct mlx4_ib_tun_tx_buf *tx_ring;
464 	spinlock_t tx_lock;
465 	unsigned tx_ix_head;
466 	unsigned tx_ix_tail;
467 };
468 
469 enum mlx4_ib_demux_pv_state {
470 	DEMUX_PV_STATE_DOWN,
471 	DEMUX_PV_STATE_STARTING,
472 	DEMUX_PV_STATE_ACTIVE,
473 	DEMUX_PV_STATE_DOWNING,
474 };
475 
476 struct mlx4_ib_demux_pv_ctx {
477 	int port;
478 	int slave;
479 	enum mlx4_ib_demux_pv_state state;
480 	int has_smi;
481 	struct ib_device *ib_dev;
482 	struct ib_cq *cq;
483 	struct ib_pd *pd;
484 	struct work_struct work;
485 	struct workqueue_struct *wq;
486 	struct workqueue_struct *wi_wq;
487 	struct mlx4_ib_demux_pv_qp qp[2];
488 };
489 
490 struct mlx4_ib_demux_ctx {
491 	struct ib_device *ib_dev;
492 	int port;
493 	struct workqueue_struct *wq;
494 	struct workqueue_struct *wi_wq;
495 	struct workqueue_struct *ud_wq;
496 	spinlock_t ud_lock;
497 	atomic64_t subnet_prefix;
498 	__be64 guid_cache[128];
499 	struct mlx4_ib_dev *dev;
500 	/* the following lock protects both mcg_table and mcg_mgid0_list */
501 	struct mutex		mcg_table_lock;
502 	struct rb_root		mcg_table;
503 	struct list_head	mcg_mgid0_list;
504 	struct workqueue_struct	*mcg_wq;
505 	struct mlx4_ib_demux_pv_ctx **tun;
506 	atomic_t tid;
507 	int    flushing; /* flushing the work queue */
508 };
509 
510 struct mlx4_ib_sriov {
511 	struct mlx4_ib_demux_ctx demux[MLX4_MAX_PORTS];
512 	struct mlx4_ib_demux_pv_ctx *sqps[MLX4_MAX_PORTS];
513 	/* when using this spinlock you should use "irq" because
514 	 * it may be called from interrupt context.*/
515 	spinlock_t going_down_lock;
516 	int is_going_down;
517 
518 	struct mlx4_sriov_alias_guid alias_guid;
519 
520 	/* CM paravirtualization fields */
521 	struct xarray pv_id_table;
522 	u32 pv_id_next;
523 	spinlock_t id_map_lock;
524 	struct rb_root sl_id_map;
525 	struct list_head cm_list;
526 	struct xarray xa_rej_tmout;
527 };
528 
529 struct gid_cache_context {
530 	int real_index;
531 	int refcount;
532 };
533 
534 struct gid_entry {
535 	union ib_gid	gid;
536 	enum ib_gid_type gid_type;
537 	struct gid_cache_context *ctx;
538 	u16 vlan_id;
539 };
540 
541 struct mlx4_port_gid_table {
542 	struct gid_entry gids[MLX4_MAX_PORT_GIDS];
543 };
544 
545 struct mlx4_ib_iboe {
546 	spinlock_t		lock;
547 	struct net_device      *netdevs[MLX4_MAX_PORTS];
548 	atomic64_t		mac[MLX4_MAX_PORTS];
549 	struct notifier_block 	nb;
550 	struct mlx4_port_gid_table gids[MLX4_MAX_PORTS];
551 	enum ib_port_state	last_port_state[MLX4_MAX_PORTS];
552 };
553 
554 struct pkey_mgt {
555 	u8			virt2phys_pkey[MLX4_MFUNC_MAX][MLX4_MAX_PORTS][MLX4_MAX_PORT_PKEYS];
556 	u16			phys_pkey_cache[MLX4_MAX_PORTS][MLX4_MAX_PORT_PKEYS];
557 	struct list_head	pkey_port_list[MLX4_MFUNC_MAX];
558 	struct kobject	       *device_parent[MLX4_MFUNC_MAX];
559 };
560 
561 struct mlx4_ib_iov_sysfs_attr {
562 	void *ctx;
563 	struct kobject *kobj;
564 	unsigned long data;
565 	u32 entry_num;
566 	char name[15];
567 	struct device_attribute dentry;
568 	struct device *dev;
569 };
570 
571 struct mlx4_ib_iov_sysfs_attr_ar {
572 	struct mlx4_ib_iov_sysfs_attr dentries[3 * NUM_ALIAS_GUID_PER_PORT + 1];
573 };
574 
575 struct mlx4_ib_iov_port {
576 	char name[100];
577 	u8 num;
578 	struct mlx4_ib_dev *dev;
579 	struct list_head list;
580 	struct mlx4_ib_iov_sysfs_attr_ar *dentr_ar;
581 	struct ib_port_attr attr;
582 	struct kobject	*cur_port;
583 	struct kobject	*admin_alias_parent;
584 	struct kobject	*gids_parent;
585 	struct kobject	*pkeys_parent;
586 	struct kobject	*mcgs_parent;
587 	struct mlx4_ib_iov_sysfs_attr mcg_dentry;
588 };
589 
590 struct counter_index {
591 	struct  list_head       list;
592 	u32		index;
593 	u8		allocated;
594 };
595 
596 struct mlx4_ib_counters {
597 	struct list_head        counters_list;
598 	struct mutex            mutex; /* mutex for accessing counters list */
599 	u32			default_counter;
600 };
601 
602 #define MLX4_DIAG_COUNTERS_TYPES 2
603 
604 struct mlx4_ib_diag_counters {
605 	struct rdma_stat_desc *descs;
606 	u32 *offset;
607 	u32 num_counters;
608 };
609 
610 struct mlx4_ib_dev {
611 	struct ib_device	ib_dev;
612 	struct mlx4_dev	       *dev;
613 	int			num_ports;
614 	void __iomem	       *uar_map;
615 
616 	struct mlx4_uar		priv_uar;
617 	u32			priv_pdn;
618 	MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
619 
620 	struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
621 	struct ib_ah	       *sm_ah[MLX4_MAX_PORTS];
622 	spinlock_t		sm_lock;
623 	atomic64_t		sl2vl[MLX4_MAX_PORTS];
624 	struct mlx4_ib_sriov	sriov;
625 
626 	struct mutex		cap_mask_mutex;
627 	bool			ib_active;
628 	struct mlx4_ib_iboe	iboe;
629 	struct mlx4_ib_counters counters_table[MLX4_MAX_PORTS];
630 	int		       *eq_table;
631 	struct kobject	       *iov_parent;
632 	struct kobject	       *ports_parent;
633 	struct kobject	       *dev_ports_parent[MLX4_MFUNC_MAX];
634 	struct mlx4_ib_iov_port	iov_ports[MLX4_MAX_PORTS];
635 	struct pkey_mgt		pkeys;
636 	unsigned long *ib_uc_qpns_bitmap;
637 	int steer_qpn_count;
638 	int steer_qpn_base;
639 	int steering_support;
640 	struct mlx4_ib_qp      *qp1_proxy[MLX4_MAX_PORTS];
641 	/* lock when destroying qp1_proxy and getting netdev events */
642 	struct mutex		qp1_proxy_lock[MLX4_MAX_PORTS];
643 	u8			bond_next_port;
644 	/* protect resources needed as part of reset flow */
645 	spinlock_t		reset_flow_resource_lock;
646 	struct list_head		qp_list;
647 	struct mlx4_ib_diag_counters diag_counters[MLX4_DIAG_COUNTERS_TYPES];
648 	struct notifier_block	mlx_nb;
649 };
650 
651 struct ib_event_work {
652 	struct work_struct	work;
653 	struct mlx4_ib_dev	*ib_dev;
654 	struct mlx4_eqe		ib_eqe;
655 	int			port;
656 };
657 
658 struct mlx4_ib_qp_tunnel_init_attr {
659 	struct ib_qp_init_attr init_attr;
660 	int slave;
661 	enum ib_qp_type proxy_qp_type;
662 	u32 port;
663 };
664 
665 struct mlx4_uverbs_ex_query_device {
666 	__u32 comp_mask;
667 	__u32 reserved;
668 };
669 
to_mdev(struct ib_device * ibdev)670 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
671 {
672 	return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
673 }
674 
to_mucontext(struct ib_ucontext * ibucontext)675 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
676 {
677 	return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
678 }
679 
to_mpd(struct ib_pd * ibpd)680 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
681 {
682 	return container_of(ibpd, struct mlx4_ib_pd, ibpd);
683 }
684 
to_mxrcd(struct ib_xrcd * ibxrcd)685 static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
686 {
687 	return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
688 }
689 
to_mcq(struct ib_cq * ibcq)690 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
691 {
692 	return container_of(ibcq, struct mlx4_ib_cq, ibcq);
693 }
694 
to_mibcq(struct mlx4_cq * mcq)695 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
696 {
697 	return container_of(mcq, struct mlx4_ib_cq, mcq);
698 }
699 
to_mmr(struct ib_mr * ibmr)700 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
701 {
702 	return container_of(ibmr, struct mlx4_ib_mr, ibmr);
703 }
704 
to_mmw(struct ib_mw * ibmw)705 static inline struct mlx4_ib_mw *to_mmw(struct ib_mw *ibmw)
706 {
707 	return container_of(ibmw, struct mlx4_ib_mw, ibmw);
708 }
709 
to_mflow(struct ib_flow * ibflow)710 static inline struct mlx4_ib_flow *to_mflow(struct ib_flow *ibflow)
711 {
712 	return container_of(ibflow, struct mlx4_ib_flow, ibflow);
713 }
714 
to_mqp(struct ib_qp * ibqp)715 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
716 {
717 	return container_of(ibqp, struct mlx4_ib_qp, ibqp);
718 }
719 
to_mibqp(struct mlx4_qp * mqp)720 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
721 {
722 	return container_of(mqp, struct mlx4_ib_qp, mqp);
723 }
724 
to_msrq(struct ib_srq * ibsrq)725 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
726 {
727 	return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
728 }
729 
to_mibsrq(struct mlx4_srq * msrq)730 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
731 {
732 	return container_of(msrq, struct mlx4_ib_srq, msrq);
733 }
734 
to_mah(struct ib_ah * ibah)735 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
736 {
737 	return container_of(ibah, struct mlx4_ib_ah, ibah);
738 }
739 
mlx4_ib_bond_next_port(struct mlx4_ib_dev * dev)740 static inline u8 mlx4_ib_bond_next_port(struct mlx4_ib_dev *dev)
741 {
742 	dev->bond_next_port = (dev->bond_next_port + 1) % dev->num_ports;
743 
744 	return dev->bond_next_port + 1;
745 }
746 
747 int mlx4_ib_init_sriov(struct mlx4_ib_dev *dev);
748 void mlx4_ib_close_sriov(struct mlx4_ib_dev *dev);
749 
750 int mlx4_ib_db_map_user(struct ib_udata *udata, unsigned long virt,
751 			struct mlx4_db *db);
752 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
753 
754 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
755 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
756 			   struct ib_umem *umem);
757 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
758 				  u64 virt_addr, int access_flags,
759 				  struct ib_udata *udata);
760 int mlx4_ib_dereg_mr(struct ib_mr *mr, struct ib_udata *udata);
761 int mlx4_ib_alloc_mw(struct ib_mw *mw, struct ib_udata *udata);
762 int mlx4_ib_dealloc_mw(struct ib_mw *mw);
763 struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
764 			       u32 max_num_sg);
765 int mlx4_ib_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
766 		      unsigned int *sg_offset);
767 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
768 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
769 int mlx4_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
770 		      struct ib_udata *udata);
771 int mlx4_ib_destroy_cq(struct ib_cq *cq, struct ib_udata *udata);
772 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
773 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
774 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
775 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
776 
777 int mlx4_ib_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr,
778 		      struct ib_udata *udata);
779 int mlx4_ib_create_ah_slave(struct ib_ah *ah, struct rdma_ah_attr *ah_attr,
780 			    int slave_sgid_index, u8 *s_mac, u16 vlan_tag);
781 int mlx4_ib_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr);
mlx4_ib_destroy_ah(struct ib_ah * ah,u32 flags)782 static inline int mlx4_ib_destroy_ah(struct ib_ah *ah, u32 flags)
783 {
784 	return 0;
785 }
786 
787 int mlx4_ib_create_srq(struct ib_srq *srq, struct ib_srq_init_attr *init_attr,
788 		       struct ib_udata *udata);
789 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
790 		       enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
791 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
792 int mlx4_ib_destroy_srq(struct ib_srq *srq, struct ib_udata *udata);
793 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
794 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
795 			  const struct ib_recv_wr **bad_wr);
796 
797 int mlx4_ib_create_qp(struct ib_qp *qp, struct ib_qp_init_attr *init_attr,
798 		      struct ib_udata *udata);
799 int mlx4_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata);
800 void mlx4_ib_drain_sq(struct ib_qp *qp);
801 void mlx4_ib_drain_rq(struct ib_qp *qp);
802 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
803 		      int attr_mask, struct ib_udata *udata);
804 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
805 		     struct ib_qp_init_attr *qp_init_attr);
806 int mlx4_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
807 		      const struct ib_send_wr **bad_wr);
808 int mlx4_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
809 		      const struct ib_recv_wr **bad_wr);
810 
811 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int mad_ifc_flags,
812 		 int port, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
813 		 const void *in_mad, void *response_mad);
814 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
815 			const struct ib_wc *in_wc, const struct ib_grh *in_grh,
816 			const struct ib_mad *in, struct ib_mad *out,
817 			size_t *out_mad_size, u16 *out_mad_pkey_index);
818 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
819 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
820 
821 int __mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
822 			 struct ib_port_attr *props, int netw_view);
823 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
824 			 u16 *pkey, int netw_view);
825 
826 int __mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
827 			union ib_gid *gid, int netw_view);
828 
mlx4_ib_ah_grh_present(struct mlx4_ib_ah * ah)829 static inline bool mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
830 {
831 	u32 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
832 
833 	if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
834 		return true;
835 
836 	return !!(ah->av.ib.g_slid & 0x80);
837 }
838 
839 int mlx4_ib_mcg_port_init(struct mlx4_ib_demux_ctx *ctx);
840 void mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy_wq);
841 void clean_vf_mcast(struct mlx4_ib_demux_ctx *ctx, int slave);
842 int mlx4_ib_mcg_init(void);
843 void mlx4_ib_mcg_destroy(void);
844 
845 int mlx4_ib_find_real_gid(struct ib_device *ibdev, u32 port, __be64 guid);
846 
847 int mlx4_ib_mcg_multiplex_handler(struct ib_device *ibdev, int port, int slave,
848 				  struct ib_sa_mad *sa_mad);
849 int mlx4_ib_mcg_demux_handler(struct ib_device *ibdev, int port, int slave,
850 			      struct ib_sa_mad *mad);
851 
852 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
853 		   union ib_gid *gid);
854 
855 void mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u32 port_num,
856 			    enum ib_event_type type);
857 
858 void mlx4_ib_tunnels_update_work(struct work_struct *work);
859 
860 int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u32 port,
861 			  enum ib_qp_type qpt, struct ib_wc *wc,
862 			  struct ib_grh *grh, struct ib_mad *mad);
863 
864 int mlx4_ib_send_to_wire(struct mlx4_ib_dev *dev, int slave, u32 port,
865 			 enum ib_qp_type dest_qpt, u16 pkey_index, u32 remote_qpn,
866 			 u32 qkey, struct rdma_ah_attr *attr, u8 *s_mac,
867 			 u16 vlan_id, struct ib_mad *mad);
868 
869 __be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx);
870 
871 int mlx4_ib_demux_cm_handler(struct ib_device *ibdev, int port, int *slave,
872 		struct ib_mad *mad);
873 
874 int mlx4_ib_multiplex_cm_handler(struct ib_device *ibdev, int port, int slave_id,
875 		struct ib_mad *mad);
876 
877 void mlx4_ib_cm_paravirt_init(struct mlx4_ib_dev *dev);
878 void mlx4_ib_cm_paravirt_clean(struct mlx4_ib_dev *dev, int slave_id);
879 
880 /* alias guid support */
881 void mlx4_ib_init_alias_guid_work(struct mlx4_ib_dev *dev, int port);
882 int mlx4_ib_init_alias_guid_service(struct mlx4_ib_dev *dev);
883 void mlx4_ib_destroy_alias_guid_service(struct mlx4_ib_dev *dev);
884 void mlx4_ib_invalidate_all_guid_record(struct mlx4_ib_dev *dev, int port);
885 
886 void mlx4_ib_notify_slaves_on_guid_change(struct mlx4_ib_dev *dev,
887 					  int block_num,
888 					  u32 port_num, u8 *p_data);
889 
890 void mlx4_ib_update_cache_on_guid_change(struct mlx4_ib_dev *dev,
891 					 int block_num, u32 port_num,
892 					 u8 *p_data);
893 
894 int add_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
895 			    struct attribute *attr);
896 void del_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
897 			     struct attribute *attr);
898 ib_sa_comp_mask mlx4_ib_get_aguid_comp_mask_from_ix(int index);
899 void mlx4_ib_slave_alias_guid_event(struct mlx4_ib_dev *dev, int slave,
900 				    int port, int slave_init);
901 
902 int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *device) ;
903 
904 void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device);
905 
906 __be64 mlx4_ib_gen_node_guid(void);
907 
908 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn);
909 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count);
910 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
911 			 int is_attach);
912 struct ib_mr *mlx4_ib_rereg_user_mr(struct ib_mr *mr, int flags, u64 start,
913 				    u64 length, u64 virt_addr,
914 				    int mr_access_flags, struct ib_pd *pd,
915 				    struct ib_udata *udata);
916 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
917 				    const struct ib_gid_attr *attr);
918 
919 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
920 				     int port);
921 
922 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port);
923 
924 struct ib_wq *mlx4_ib_create_wq(struct ib_pd *pd,
925 				struct ib_wq_init_attr *init_attr,
926 				struct ib_udata *udata);
927 int mlx4_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata);
928 int mlx4_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
929 		      u32 wq_attr_mask, struct ib_udata *udata);
930 
931 int mlx4_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl,
932 				 struct ib_rwq_ind_table_init_attr *init_attr,
933 				 struct ib_udata *udata);
934 static inline int
mlx4_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table * wq_ind_table)935 mlx4_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table)
936 {
937 	return 0;
938 }
939 int mlx4_ib_umem_calc_optimal_mtt_size(struct ib_umem *umem, u64 start_va,
940 				       int *num_of_mtts);
941 
942 int mlx4_ib_cm_init(void);
943 void mlx4_ib_cm_destroy(void);
944 
945 int mlx4_ib_qp_event_init(void);
946 void mlx4_ib_qp_event_cleanup(void);
947 
948 #endif /* MLX4_IB_H */
949