2 * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
4 * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
38 #include <linux/types.h>
39 #include <linux/spinlock.h>
40 #include <linux/kernel.h>
41 #include <linux/interrupt.h>
42 #include <linux/kref.h>
43 #include <linux/workqueue.h>
44 #include <rdma/ib_pack.h>
45 #include <rdma/ib_user_verbs.h>
50 struct qib_verbs_txreq
;
52 #define QIB_MAX_RDMA_ATOMIC 16
53 #define QIB_GUIDS_PER_PORT 5
55 #define QPN_MAX (1 << 24)
56 #define QPNMAP_ENTRIES (QPN_MAX / PAGE_SIZE / BITS_PER_BYTE)
59 * Increment this value if any changes that break userspace ABI
60 * compatibility are made.
62 #define QIB_UVERBS_ABI_VERSION 2
65 * Define an ib_cq_notify value that is not valid so we know when CQ
66 * notifications are armed.
68 #define IB_CQ_NONE (IB_CQ_NEXT_COMP + 1)
70 #define IB_SEQ_NAK (3 << 29)
72 /* AETH NAK opcode values */
73 #define IB_RNR_NAK 0x20
74 #define IB_NAK_PSN_ERROR 0x60
75 #define IB_NAK_INVALID_REQUEST 0x61
76 #define IB_NAK_REMOTE_ACCESS_ERROR 0x62
77 #define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
78 #define IB_NAK_INVALID_RD_REQUEST 0x64
80 /* Flags for checking QP state (see ib_qib_state_ops[]) */
81 #define QIB_POST_SEND_OK 0x01
82 #define QIB_POST_RECV_OK 0x02
83 #define QIB_PROCESS_RECV_OK 0x04
84 #define QIB_PROCESS_SEND_OK 0x08
85 #define QIB_PROCESS_NEXT_SEND_OK 0x10
86 #define QIB_FLUSH_SEND 0x20
87 #define QIB_FLUSH_RECV 0x40
88 #define QIB_PROCESS_OR_FLUSH_SEND \
89 (QIB_PROCESS_SEND_OK | QIB_FLUSH_SEND)
91 /* IB Performance Manager status values */
92 #define IB_PMA_SAMPLE_STATUS_DONE 0x00
93 #define IB_PMA_SAMPLE_STATUS_STARTED 0x01
94 #define IB_PMA_SAMPLE_STATUS_RUNNING 0x02
96 /* Mandatory IB performance counter select values. */
97 #define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001)
98 #define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002)
99 #define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003)
100 #define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004)
101 #define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005)
103 #define QIB_VENDOR_IPG cpu_to_be16(0xFFA0)
105 #define IB_BTH_REQ_ACK (1 << 31)
106 #define IB_BTH_SOLICITED (1 << 23)
107 #define IB_BTH_MIG_REQ (1 << 22)
109 #define IB_PORT_OTHER_LOCAL_CHANGES_SUP (1 << 26)
111 #define IB_GRH_VERSION 6
112 #define IB_GRH_VERSION_MASK 0xF
113 #define IB_GRH_VERSION_SHIFT 28
114 #define IB_GRH_TCLASS_MASK 0xFF
115 #define IB_GRH_TCLASS_SHIFT 20
116 #define IB_GRH_FLOW_MASK 0xFFFFF
117 #define IB_GRH_FLOW_SHIFT 0
118 #define IB_GRH_NEXT_HDR 0x1B
120 #define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
122 /* Values for set/get portinfo VLCap OperationalVLs */
124 #define IB_VL_VL0_1 2
125 #define IB_VL_VL0_3 3
126 #define IB_VL_VL0_7 4
127 #define IB_VL_VL0_14 5
129 static inline int qib_num_vls(int vls
)
150 } __attribute__ ((packed
));
152 struct ib_atomic_eth
{
153 __be32 vaddr
[2]; /* unaligned so access as 2 32-bit words */
157 } __attribute__ ((packed
));
159 struct qib_other_headers
{
172 __be32 atomic_ack_eth
[2];
176 struct ib_atomic_eth atomic_eth
;
178 } __attribute__ ((packed
));
181 * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes
182 * long (72 w/ imm_data). Only the first 56 bytes of the IB header
183 * will be in the eager header buffer. The remaining 12 or 16 bytes
184 * are in the data buffer.
186 struct qib_ib_header
{
191 struct qib_other_headers oth
;
193 struct qib_other_headers oth
;
195 } __attribute__ ((packed
));
197 struct qib_pio_header
{
199 struct qib_ib_header hdr
;
200 } __attribute__ ((packed
));
203 * There is one struct qib_mcast for each multicast GID.
204 * All attached QPs are then stored as a list of
205 * struct qib_mcast_qp.
207 struct qib_mcast_qp
{
208 struct list_head list
;
213 struct rb_node rb_node
;
215 struct list_head qp_list
;
216 wait_queue_head_t wait
;
221 /* Protection domain */
224 int user
; /* non-zero if created from user space */
230 struct ib_ah_attr attr
;
235 * This structure is used by qib_mmap() to validate an offset
236 * when an mmap() request is made. The vm_area_struct then uses
237 * this as its vm_private_data.
239 struct qib_mmap_info
{
240 struct list_head pending_mmaps
;
241 struct ib_ucontext
*context
;
249 * This structure is used to contain the head pointer, tail pointer,
250 * and completion queue entries as a single memory allocation so
251 * it can be mmap'ed into user space.
254 u32 head
; /* index of next entry to fill */
255 u32 tail
; /* index of next ib_poll_cq() entry */
257 /* these are actually size ibcq.cqe + 1 */
258 struct ib_uverbs_wc uqueue
[0];
259 struct ib_wc kqueue
[0];
264 * The completion queue structure.
268 struct work_struct comptask
;
269 spinlock_t lock
; /* protect changes in this struct */
272 struct qib_cq_wc
*queue
;
273 struct qib_mmap_info
*ip
;
281 /* The number of qib_segs that fit in a page. */
282 #define QIB_SEGSZ (PAGE_SIZE / sizeof(struct qib_seg))
284 struct qib_segarray
{
285 struct qib_seg segs
[QIB_SEGSZ
];
289 struct ib_pd
*pd
; /* shares refcnt of ibmr.pd */
290 u64 user_base
; /* User's address for this region */
291 u64 iova
; /* IB start address of this region */
294 u32 offset
; /* offset (bytes) to start of region */
296 u32 max_segs
; /* number of qib_segs in all the arrays */
297 u32 mapsz
; /* size of the map array */
299 struct qib_segarray
*map
[0]; /* the segments */
303 * These keep track of the copy progress within a memory region.
304 * Used by the verbs layer.
307 struct qib_mregion
*mr
;
308 void *vaddr
; /* kernel virtual address of segment */
309 u32 sge_length
; /* length of the SGE */
310 u32 length
; /* remaining length of the segment */
311 u16 m
; /* current index: mr->map[m] */
312 u16 n
; /* current index: mr->map[m]->segs[n] */
318 struct ib_umem
*umem
;
319 struct qib_mregion mr
; /* must be last */
323 * Send work request queue entry.
324 * The size of the sg_list is determined when the QP is created and stored
328 struct ib_send_wr wr
; /* don't use wr.sg_list */
329 u32 psn
; /* first packet sequence number */
330 u32 lpsn
; /* last packet sequence number */
331 u32 ssn
; /* send sequence number */
332 u32 length
; /* total length of data in sg_list */
333 struct qib_sge sg_list
[0];
337 * Receive work request queue entry.
338 * The size of the sg_list is determined when the QP (or SRQ) is created
339 * and stored in qp->r_rq.max_sge (or srq->rq.max_sge).
344 struct ib_sge sg_list
[0];
348 * This structure is used to contain the head pointer, tail pointer,
349 * and receive work queue entries as a single memory allocation so
350 * it can be mmap'ed into user space.
351 * Note that the wq array elements are variable size so you can't
352 * just index into the array to get the N'th element;
353 * use get_rwqe_ptr() instead.
356 u32 head
; /* new work requests posted to the head */
357 u32 tail
; /* receives pull requests from here. */
358 struct qib_rwqe wq
[0];
363 spinlock_t lock
; /* protect changes in this struct */
364 u32 size
; /* size of RWQE array */
371 struct qib_mmap_info
*ip
;
372 /* send signal when number of RWQEs < limit */
376 struct qib_sge_state
{
377 struct qib_sge
*sg_list
; /* next SGE to be used if any */
378 struct qib_sge sge
; /* progress state for the current SGE */
384 * This structure holds the information that the send tasklet needs
385 * to send a RDMA read response or atomic operation.
387 struct qib_ack_entry
{
393 struct qib_sge rdma_sge
;
399 * Variables prefixed with s_ are for the requester (sender).
400 * Variables prefixed with r_ are for the responder (receiver).
401 * Variables prefixed with ack_ are for responder replies.
403 * Common variables are protected by both r_rq.lock and s_lock in that order
404 * which only happens in modify_qp() or changing the QP 'state'.
408 struct qib_qp
*next
; /* link list for QPN hash table */
409 struct qib_qp
*timer_next
; /* link list for qib_ib_timer() */
410 struct list_head iowait
; /* link for wait PIO buf */
411 struct list_head rspwait
; /* link for waititing to respond */
412 struct ib_ah_attr remote_ah_attr
;
413 struct ib_ah_attr alt_ah_attr
;
414 struct qib_ib_header s_hdr
; /* next packet header to send */
416 wait_queue_head_t wait
;
417 wait_queue_head_t wait_dma
;
418 struct timer_list s_timer
;
419 struct work_struct s_work
;
420 struct qib_mmap_info
*ip
;
421 struct qib_sge_state
*s_cur_sge
;
422 struct qib_verbs_txreq
*s_tx
;
423 struct qib_mregion
*s_rdma_mr
;
424 struct qib_sge_state s_sge
; /* current send request data */
425 struct qib_ack_entry s_ack_queue
[QIB_MAX_RDMA_ATOMIC
+ 1];
426 struct qib_sge_state s_ack_rdma_sge
;
427 struct qib_sge_state s_rdma_read_sge
;
428 struct qib_sge_state r_sge
; /* current receive data */
429 spinlock_t r_lock
; /* used for APM */
432 unsigned processor_id
; /* Processor ID QP is bound to */
434 u32 s_cur_size
; /* size of send packet in bytes */
435 u32 s_len
; /* total length of s_sge */
436 u32 s_rdma_read_len
; /* total length of s_rdma_read_sge */
437 u32 s_next_psn
; /* PSN for next request */
438 u32 s_last_psn
; /* last response PSN processed */
439 u32 s_sending_psn
; /* lowest PSN that is being sent */
440 u32 s_sending_hpsn
; /* highest PSN that is being sent */
441 u32 s_psn
; /* current packet sequence number */
442 u32 s_ack_rdma_psn
; /* PSN for sending RDMA read responses */
443 u32 s_ack_psn
; /* PSN for acking sends and RDMA writes */
444 u32 s_rnr_timeout
; /* number of milliseconds for RNR timeout */
445 u32 r_ack_psn
; /* PSN for next ACK or atomic ACK */
446 u64 r_wr_id
; /* ID for current receive WQE */
447 unsigned long r_aflags
;
448 u32 r_len
; /* total length of r_sge */
449 u32 r_rcv_len
; /* receive data len processed */
450 u32 r_psn
; /* expected rcv packet sequence number */
451 u32 r_msn
; /* message sequence number */
452 u16 s_hdrwords
; /* size of s_hdr in 32 bit words */
454 u8 state
; /* QP state */
455 u8 s_state
; /* opcode of last packet sent */
456 u8 s_ack_state
; /* opcode of packet to ACK */
457 u8 s_nak_state
; /* non-zero if NAK is pending */
458 u8 r_state
; /* opcode of last packet received */
459 u8 r_nak_state
; /* non-zero if NAK is pending */
460 u8 r_min_rnr_timer
; /* retry timeout value for RNR NAKs */
462 u8 r_max_rd_atomic
; /* max number of RDMA read/atomic to receive */
463 u8 r_head_ack_queue
; /* index into s_ack_queue[] */
465 u8 s_max_sge
; /* size of s_wq->sg_list */
466 u8 s_retry_cnt
; /* number of times to retry */
468 u8 s_retry
; /* requester retry counter */
469 u8 s_rnr_retry
; /* requester RNR retry counter */
470 u8 s_pkey_index
; /* PKEY index to use */
471 u8 s_alt_pkey_index
; /* Alternate path PKEY index to use */
472 u8 s_max_rd_atomic
; /* max number of RDMA read/atomic to send */
473 u8 s_num_rd_atomic
; /* number of RDMA read/atomic pending */
474 u8 s_tail_ack_queue
; /* index into s_ack_queue[] */
478 u8 timeout
; /* Timeout for this QP */
479 u8 alt_timeout
; /* Alternate path timeout for this QP */
481 enum ib_mtu path_mtu
;
483 u32 qkey
; /* QKEY for this QP (for UD or RD) */
484 u32 s_size
; /* send work queue size */
485 u32 s_head
; /* new entries added here */
486 u32 s_tail
; /* next entry to process */
487 u32 s_cur
; /* current work queue entry */
488 u32 s_acked
; /* last un-ACK'ed entry */
489 u32 s_last
; /* last completed entry */
490 u32 s_ssn
; /* SSN of tail entry */
491 u32 s_lsn
; /* limit sequence number (credit) */
492 struct qib_swqe
*s_wq
; /* send work queue */
493 struct qib_swqe
*s_wqe
;
494 struct qib_rq r_rq
; /* receive work queue */
495 struct qib_sge r_sg_list
[0]; /* verified SGEs */
499 * Atomic bit definitions for r_aflags.
501 #define QIB_R_WRID_VALID 0
502 #define QIB_R_REWIND_SGE 1
505 * Bit definitions for r_flags.
507 #define QIB_R_REUSE_SGE 0x01
508 #define QIB_R_RDMAR_SEQ 0x02
509 #define QIB_R_RSP_NAK 0x04
510 #define QIB_R_RSP_SEND 0x08
511 #define QIB_R_COMM_EST 0x10
514 * Bit definitions for s_flags.
516 * QIB_S_SIGNAL_REQ_WR - set if QP send WRs contain completion signaled
517 * QIB_S_BUSY - send tasklet is processing the QP
518 * QIB_S_TIMER - the RC retry timer is active
519 * QIB_S_ACK_PENDING - an ACK is waiting to be sent after RDMA read/atomics
520 * QIB_S_WAIT_FENCE - waiting for all prior RDMA read or atomic SWQEs
521 * before processing the next SWQE
522 * QIB_S_WAIT_RDMAR - waiting for a RDMA read or atomic SWQE to complete
523 * before processing the next SWQE
524 * QIB_S_WAIT_RNR - waiting for RNR timeout
525 * QIB_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE
526 * QIB_S_WAIT_DMA - waiting for send DMA queue to drain before generating
527 * next send completion entry not via send DMA
528 * QIB_S_WAIT_PIO - waiting for a send buffer to be available
529 * QIB_S_WAIT_TX - waiting for a struct qib_verbs_txreq to be available
530 * QIB_S_WAIT_DMA_DESC - waiting for DMA descriptors to be available
531 * QIB_S_WAIT_KMEM - waiting for kernel memory to be available
532 * QIB_S_WAIT_PSN - waiting for a packet to exit the send DMA queue
533 * QIB_S_WAIT_ACK - waiting for an ACK packet before sending more requests
534 * QIB_S_SEND_ONE - send one packet, request ACK, then wait for ACK
536 #define QIB_S_SIGNAL_REQ_WR 0x0001
537 #define QIB_S_BUSY 0x0002
538 #define QIB_S_TIMER 0x0004
539 #define QIB_S_RESP_PENDING 0x0008
540 #define QIB_S_ACK_PENDING 0x0010
541 #define QIB_S_WAIT_FENCE 0x0020
542 #define QIB_S_WAIT_RDMAR 0x0040
543 #define QIB_S_WAIT_RNR 0x0080
544 #define QIB_S_WAIT_SSN_CREDIT 0x0100
545 #define QIB_S_WAIT_DMA 0x0200
546 #define QIB_S_WAIT_PIO 0x0400
547 #define QIB_S_WAIT_TX 0x0800
548 #define QIB_S_WAIT_DMA_DESC 0x1000
549 #define QIB_S_WAIT_KMEM 0x2000
550 #define QIB_S_WAIT_PSN 0x4000
551 #define QIB_S_WAIT_ACK 0x8000
552 #define QIB_S_SEND_ONE 0x10000
553 #define QIB_S_UNLIMITED_CREDIT 0x20000
556 * Wait flags that would prevent any packet type from being sent.
558 #define QIB_S_ANY_WAIT_IO (QIB_S_WAIT_PIO | QIB_S_WAIT_TX | \
559 QIB_S_WAIT_DMA_DESC | QIB_S_WAIT_KMEM)
562 * Wait flags that would prevent send work requests from making progress.
564 #define QIB_S_ANY_WAIT_SEND (QIB_S_WAIT_FENCE | QIB_S_WAIT_RDMAR | \
565 QIB_S_WAIT_RNR | QIB_S_WAIT_SSN_CREDIT | QIB_S_WAIT_DMA | \
566 QIB_S_WAIT_PSN | QIB_S_WAIT_ACK)
568 #define QIB_S_ANY_WAIT (QIB_S_ANY_WAIT_IO | QIB_S_ANY_WAIT_SEND)
570 #define QIB_PSN_CREDIT 16
573 * Since struct qib_swqe is not a fixed size, we can't simply index into
574 * struct qib_qp.s_wq. This function does the array index computation.
576 static inline struct qib_swqe
*get_swqe_ptr(struct qib_qp
*qp
,
579 return (struct qib_swqe
*)((char *)qp
->s_wq
+
580 (sizeof(struct qib_swqe
) +
582 sizeof(struct qib_sge
)) * n
);
586 * Since struct qib_rwqe is not a fixed size, we can't simply index into
587 * struct qib_rwq.wq. This function does the array index computation.
589 static inline struct qib_rwqe
*get_rwqe_ptr(struct qib_rq
*rq
, unsigned n
)
591 return (struct qib_rwqe
*)
592 ((char *) rq
->wq
->wq
+
593 (sizeof(struct qib_rwqe
) +
594 rq
->max_sge
* sizeof(struct ib_sge
)) * n
);
598 * QPN-map pages start out as NULL, they get allocated upon
599 * first use and are never deallocated. This way,
600 * large bitmaps are not allocated unless large numbers of QPs are used.
606 struct qib_qpn_table
{
607 spinlock_t lock
; /* protect changes in this struct */
608 unsigned flags
; /* flags for QP0/1 allocated for each port */
609 u32 last
; /* last QP number allocated */
610 u32 nmaps
; /* size of the map table */
613 /* bit map of free QP numbers other than 0/1 */
614 struct qpn_map map
[QPNMAP_ENTRIES
];
617 struct qib_lkey_table
{
618 spinlock_t lock
; /* protect changes in this struct */
619 u32 next
; /* next unused index (speeds search) */
620 u32 gen
; /* generation count */
621 u32 max
; /* size of the table */
622 struct qib_mregion
**table
;
625 struct qib_opcode_stats
{
626 u64 n_packets
; /* number of packets */
627 u64 n_bytes
; /* total number of bytes */
633 struct ib_mad_agent
*send_agent
; /* agent for SMI (traps) */
634 struct qib_ah
*sm_ah
;
635 struct qib_ah
*smi_ah
;
636 struct rb_root mcast_tree
;
637 spinlock_t lock
; /* protect changes in this struct */
639 /* non-zero when timer is set */
640 unsigned long mkey_lease_timeout
;
641 unsigned long trap_timeout
;
642 __be64 gid_prefix
; /* in network order */
644 __be64 guids
[QIB_GUIDS_PER_PORT
- 1]; /* writable GUIDs */
645 u64 tid
; /* TID for traps */
646 u64 n_unicast_xmit
; /* total unicast packets sent */
647 u64 n_unicast_rcv
; /* total unicast packets received */
648 u64 n_multicast_xmit
; /* total multicast packets sent */
649 u64 n_multicast_rcv
; /* total multicast packets received */
650 u64 z_symbol_error_counter
; /* starting count for PMA */
651 u64 z_link_error_recovery_counter
; /* starting count for PMA */
652 u64 z_link_downed_counter
; /* starting count for PMA */
653 u64 z_port_rcv_errors
; /* starting count for PMA */
654 u64 z_port_rcv_remphys_errors
; /* starting count for PMA */
655 u64 z_port_xmit_discards
; /* starting count for PMA */
656 u64 z_port_xmit_data
; /* starting count for PMA */
657 u64 z_port_rcv_data
; /* starting count for PMA */
658 u64 z_port_xmit_packets
; /* starting count for PMA */
659 u64 z_port_rcv_packets
; /* starting count for PMA */
660 u32 z_local_link_integrity_errors
; /* starting count for PMA */
661 u32 z_excessive_buffer_overrun_errors
; /* starting count for PMA */
662 u32 z_vl15_dropped
; /* starting count for PMA */
666 u32 n_rc_delayed_comp
;
680 u32 pma_sample_start
;
681 u32 pma_sample_interval
;
682 __be16 pma_counter_select
[5];
687 u16 mkey_lease_period
;
696 struct qib_opcode_stats opstats
[128];
700 struct ib_device ibdev
;
701 struct list_head pending_mmaps
;
702 spinlock_t mmap_offset_lock
; /* protect mmap_offset */
704 struct qib_mregion
*dma_mr
;
706 /* QP numbers are shared by all IB ports */
707 struct qib_qpn_table qpn_table
;
708 struct qib_lkey_table lk_table
;
709 struct list_head piowait
; /* list for wait PIO buf */
710 struct list_head dmawait
; /* list for wait DMA */
711 struct list_head txwait
; /* list for wait qib_verbs_txreq */
712 struct list_head memwait
; /* list for wait kernel memory */
713 struct list_head txreq_free
;
714 struct timer_list mem_timer
;
715 struct qib_qp
**qp_table
;
716 struct qib_pio_header
*pio_hdrs
;
717 dma_addr_t pio_hdrs_phys
;
718 /* list of QPs waiting for RNR timer */
719 spinlock_t pending_lock
; /* protect wait lists, PMA counters, etc. */
720 unsigned qp_table_size
; /* size of the hash table */
726 u32 n_pds_allocated
; /* number of PDs allocated for device */
727 spinlock_t n_pds_lock
;
728 u32 n_ahs_allocated
; /* number of AHs allocated for device */
729 spinlock_t n_ahs_lock
;
730 u32 n_cqs_allocated
; /* number of CQs allocated for device */
731 spinlock_t n_cqs_lock
;
732 u32 n_qps_allocated
; /* number of QPs allocated for device */
733 spinlock_t n_qps_lock
;
734 u32 n_srqs_allocated
; /* number of SRQs allocated for device */
735 spinlock_t n_srqs_lock
;
736 u32 n_mcast_grps_allocated
; /* number of mcast groups allocated */
737 spinlock_t n_mcast_grps_lock
;
740 struct qib_verbs_counters
{
741 u64 symbol_error_counter
;
742 u64 link_error_recovery_counter
;
743 u64 link_downed_counter
;
745 u64 port_rcv_remphys_errors
;
746 u64 port_xmit_discards
;
749 u64 port_xmit_packets
;
750 u64 port_rcv_packets
;
751 u32 local_link_integrity_errors
;
752 u32 excessive_buffer_overrun_errors
;
756 static inline struct qib_mr
*to_imr(struct ib_mr
*ibmr
)
758 return container_of(ibmr
, struct qib_mr
, ibmr
);
761 static inline struct qib_pd
*to_ipd(struct ib_pd
*ibpd
)
763 return container_of(ibpd
, struct qib_pd
, ibpd
);
766 static inline struct qib_ah
*to_iah(struct ib_ah
*ibah
)
768 return container_of(ibah
, struct qib_ah
, ibah
);
771 static inline struct qib_cq
*to_icq(struct ib_cq
*ibcq
)
773 return container_of(ibcq
, struct qib_cq
, ibcq
);
776 static inline struct qib_srq
*to_isrq(struct ib_srq
*ibsrq
)
778 return container_of(ibsrq
, struct qib_srq
, ibsrq
);
781 static inline struct qib_qp
*to_iqp(struct ib_qp
*ibqp
)
783 return container_of(ibqp
, struct qib_qp
, ibqp
);
786 static inline struct qib_ibdev
*to_idev(struct ib_device
*ibdev
)
788 return container_of(ibdev
, struct qib_ibdev
, ibdev
);
792 * Send if not busy or waiting for I/O and either
793 * a RC response is pending or we can process send work requests.
795 static inline int qib_send_ok(struct qib_qp
*qp
)
797 return !(qp
->s_flags
& (QIB_S_BUSY
| QIB_S_ANY_WAIT_IO
)) &&
798 (qp
->s_hdrwords
|| (qp
->s_flags
& QIB_S_RESP_PENDING
) ||
799 !(qp
->s_flags
& QIB_S_ANY_WAIT_SEND
));
802 extern struct workqueue_struct
*qib_wq
;
803 extern struct workqueue_struct
*qib_cq_wq
;
806 * This must be called with s_lock held.
808 static inline void qib_schedule_send(struct qib_qp
*qp
)
810 if (qib_send_ok(qp
)) {
811 if (qp
->processor_id
== smp_processor_id())
812 queue_work(qib_wq
, &qp
->s_work
);
814 queue_work_on(qp
->processor_id
,
815 qib_wq
, &qp
->s_work
);
819 static inline int qib_pkey_ok(u16 pkey1
, u16 pkey2
)
821 u16 p1
= pkey1
& 0x7FFF;
822 u16 p2
= pkey2
& 0x7FFF;
825 * Low 15 bits must be non-zero and match, and
826 * one of the two must be a full member.
828 return p1
&& p1
== p2
&& ((__s16
)pkey1
< 0 || (__s16
)pkey2
< 0);
831 void qib_bad_pqkey(struct qib_ibport
*ibp
, __be16 trap_num
, u32 key
, u32 sl
,
832 u32 qp1
, u32 qp2
, __be16 lid1
, __be16 lid2
);
833 void qib_cap_mask_chg(struct qib_ibport
*ibp
);
834 void qib_sys_guid_chg(struct qib_ibport
*ibp
);
835 void qib_node_desc_chg(struct qib_ibport
*ibp
);
836 int qib_process_mad(struct ib_device
*ibdev
, int mad_flags
, u8 port_num
,
837 struct ib_wc
*in_wc
, struct ib_grh
*in_grh
,
838 struct ib_mad
*in_mad
, struct ib_mad
*out_mad
);
839 int qib_create_agents(struct qib_ibdev
*dev
);
840 void qib_free_agents(struct qib_ibdev
*dev
);
843 * Compare the lower 24 bits of the two values.
844 * Returns an integer <, ==, or > than zero.
846 static inline int qib_cmp24(u32 a
, u32 b
)
848 return (((int) a
) - ((int) b
)) << 8;
851 struct qib_mcast
*qib_mcast_find(struct qib_ibport
*ibp
, union ib_gid
*mgid
);
853 int qib_snapshot_counters(struct qib_pportdata
*ppd
, u64
*swords
,
854 u64
*rwords
, u64
*spkts
, u64
*rpkts
,
857 int qib_get_counters(struct qib_pportdata
*ppd
,
858 struct qib_verbs_counters
*cntrs
);
860 int qib_multicast_attach(struct ib_qp
*ibqp
, union ib_gid
*gid
, u16 lid
);
862 int qib_multicast_detach(struct ib_qp
*ibqp
, union ib_gid
*gid
, u16 lid
);
864 int qib_mcast_tree_empty(struct qib_ibport
*ibp
);
866 __be32
qib_compute_aeth(struct qib_qp
*qp
);
868 struct qib_qp
*qib_lookup_qpn(struct qib_ibport
*ibp
, u32 qpn
);
870 struct ib_qp
*qib_create_qp(struct ib_pd
*ibpd
,
871 struct ib_qp_init_attr
*init_attr
,
872 struct ib_udata
*udata
);
874 int qib_destroy_qp(struct ib_qp
*ibqp
);
876 int qib_error_qp(struct qib_qp
*qp
, enum ib_wc_status err
);
878 int qib_modify_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*attr
,
879 int attr_mask
, struct ib_udata
*udata
);
881 int qib_query_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*attr
,
882 int attr_mask
, struct ib_qp_init_attr
*init_attr
);
884 unsigned qib_free_all_qps(struct qib_devdata
*dd
);
886 void qib_init_qpn_table(struct qib_devdata
*dd
, struct qib_qpn_table
*qpt
);
888 void qib_free_qpn_table(struct qib_qpn_table
*qpt
);
890 void qib_get_credit(struct qib_qp
*qp
, u32 aeth
);
892 unsigned qib_pkt_delay(u32 plen
, u8 snd_mult
, u8 rcv_mult
);
894 void qib_verbs_sdma_desc_avail(struct qib_pportdata
*ppd
, unsigned avail
);
896 void qib_put_txreq(struct qib_verbs_txreq
*tx
);
898 int qib_verbs_send(struct qib_qp
*qp
, struct qib_ib_header
*hdr
,
899 u32 hdrwords
, struct qib_sge_state
*ss
, u32 len
);
901 void qib_copy_sge(struct qib_sge_state
*ss
, void *data
, u32 length
,
904 void qib_skip_sge(struct qib_sge_state
*ss
, u32 length
, int release
);
906 void qib_uc_rcv(struct qib_ibport
*ibp
, struct qib_ib_header
*hdr
,
907 int has_grh
, void *data
, u32 tlen
, struct qib_qp
*qp
);
909 void qib_rc_rcv(struct qib_ctxtdata
*rcd
, struct qib_ib_header
*hdr
,
910 int has_grh
, void *data
, u32 tlen
, struct qib_qp
*qp
);
912 int qib_check_ah(struct ib_device
*ibdev
, struct ib_ah_attr
*ah_attr
);
914 void qib_rc_rnr_retry(unsigned long arg
);
916 void qib_rc_send_complete(struct qib_qp
*qp
, struct qib_ib_header
*hdr
);
918 void qib_rc_error(struct qib_qp
*qp
, enum ib_wc_status err
);
920 int qib_post_ud_send(struct qib_qp
*qp
, struct ib_send_wr
*wr
);
922 void qib_ud_rcv(struct qib_ibport
*ibp
, struct qib_ib_header
*hdr
,
923 int has_grh
, void *data
, u32 tlen
, struct qib_qp
*qp
);
925 int qib_alloc_lkey(struct qib_lkey_table
*rkt
, struct qib_mregion
*mr
);
927 int qib_free_lkey(struct qib_ibdev
*dev
, struct qib_mregion
*mr
);
929 int qib_lkey_ok(struct qib_lkey_table
*rkt
, struct qib_pd
*pd
,
930 struct qib_sge
*isge
, struct ib_sge
*sge
, int acc
);
932 int qib_rkey_ok(struct qib_qp
*qp
, struct qib_sge
*sge
,
933 u32 len
, u64 vaddr
, u32 rkey
, int acc
);
935 int qib_post_srq_receive(struct ib_srq
*ibsrq
, struct ib_recv_wr
*wr
,
936 struct ib_recv_wr
**bad_wr
);
938 struct ib_srq
*qib_create_srq(struct ib_pd
*ibpd
,
939 struct ib_srq_init_attr
*srq_init_attr
,
940 struct ib_udata
*udata
);
942 int qib_modify_srq(struct ib_srq
*ibsrq
, struct ib_srq_attr
*attr
,
943 enum ib_srq_attr_mask attr_mask
,
944 struct ib_udata
*udata
);
946 int qib_query_srq(struct ib_srq
*ibsrq
, struct ib_srq_attr
*attr
);
948 int qib_destroy_srq(struct ib_srq
*ibsrq
);
950 void qib_cq_enter(struct qib_cq
*cq
, struct ib_wc
*entry
, int sig
);
952 int qib_poll_cq(struct ib_cq
*ibcq
, int num_entries
, struct ib_wc
*entry
);
954 struct ib_cq
*qib_create_cq(struct ib_device
*ibdev
, int entries
,
955 int comp_vector
, struct ib_ucontext
*context
,
956 struct ib_udata
*udata
);
958 int qib_destroy_cq(struct ib_cq
*ibcq
);
960 int qib_req_notify_cq(struct ib_cq
*ibcq
, enum ib_cq_notify_flags notify_flags
);
962 int qib_resize_cq(struct ib_cq
*ibcq
, int cqe
, struct ib_udata
*udata
);
964 struct ib_mr
*qib_get_dma_mr(struct ib_pd
*pd
, int acc
);
966 struct ib_mr
*qib_reg_phys_mr(struct ib_pd
*pd
,
967 struct ib_phys_buf
*buffer_list
,
968 int num_phys_buf
, int acc
, u64
*iova_start
);
970 struct ib_mr
*qib_reg_user_mr(struct ib_pd
*pd
, u64 start
, u64 length
,
971 u64 virt_addr
, int mr_access_flags
,
972 struct ib_udata
*udata
);
974 int qib_dereg_mr(struct ib_mr
*ibmr
);
976 struct ib_mr
*qib_alloc_fast_reg_mr(struct ib_pd
*pd
, int max_page_list_len
);
978 struct ib_fast_reg_page_list
*qib_alloc_fast_reg_page_list(
979 struct ib_device
*ibdev
, int page_list_len
);
981 void qib_free_fast_reg_page_list(struct ib_fast_reg_page_list
*pl
);
983 int qib_fast_reg_mr(struct qib_qp
*qp
, struct ib_send_wr
*wr
);
985 struct ib_fmr
*qib_alloc_fmr(struct ib_pd
*pd
, int mr_access_flags
,
986 struct ib_fmr_attr
*fmr_attr
);
988 int qib_map_phys_fmr(struct ib_fmr
*ibfmr
, u64
*page_list
,
989 int list_len
, u64 iova
);
991 int qib_unmap_fmr(struct list_head
*fmr_list
);
993 int qib_dealloc_fmr(struct ib_fmr
*ibfmr
);
995 void qib_release_mmap_info(struct kref
*ref
);
997 struct qib_mmap_info
*qib_create_mmap_info(struct qib_ibdev
*dev
, u32 size
,
998 struct ib_ucontext
*context
,
1001 void qib_update_mmap_info(struct qib_ibdev
*dev
, struct qib_mmap_info
*ip
,
1002 u32 size
, void *obj
);
1004 int qib_mmap(struct ib_ucontext
*context
, struct vm_area_struct
*vma
);
1006 int qib_get_rwqe(struct qib_qp
*qp
, int wr_id_only
);
1008 void qib_migrate_qp(struct qib_qp
*qp
);
1010 int qib_ruc_check_hdr(struct qib_ibport
*ibp
, struct qib_ib_header
*hdr
,
1011 int has_grh
, struct qib_qp
*qp
, u32 bth0
);
1013 u32
qib_make_grh(struct qib_ibport
*ibp
, struct ib_grh
*hdr
,
1014 struct ib_global_route
*grh
, u32 hwords
, u32 nwords
);
1016 void qib_make_ruc_header(struct qib_qp
*qp
, struct qib_other_headers
*ohdr
,
1017 u32 bth0
, u32 bth2
);
1019 void qib_do_send(struct work_struct
*work
);
1021 void qib_send_complete(struct qib_qp
*qp
, struct qib_swqe
*wqe
,
1022 enum ib_wc_status status
);
1024 void qib_send_rc_ack(struct qib_qp
*qp
);
1026 int qib_make_rc_req(struct qib_qp
*qp
);
1028 int qib_make_uc_req(struct qib_qp
*qp
);
1030 int qib_make_ud_req(struct qib_qp
*qp
);
1032 int qib_register_ib_device(struct qib_devdata
*);
1034 void qib_unregister_ib_device(struct qib_devdata
*);
1036 void qib_ib_rcv(struct qib_ctxtdata
*, void *, void *, u32
);
1038 void qib_ib_piobufavail(struct qib_devdata
*);
1040 unsigned qib_get_npkeys(struct qib_devdata
*);
1042 unsigned qib_get_pkey(struct qib_ibport
*, unsigned);
1044 extern const enum ib_wc_opcode ib_qib_wc_opcode
[];
1047 * Below HCA-independent IB PhysPortState values, returned
1048 * by the f_ibphys_portstate() routine.
1050 #define IB_PHYSPORTSTATE_SLEEP 1
1051 #define IB_PHYSPORTSTATE_POLL 2
1052 #define IB_PHYSPORTSTATE_DISABLED 3
1053 #define IB_PHYSPORTSTATE_CFG_TRAIN 4
1054 #define IB_PHYSPORTSTATE_LINKUP 5
1055 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6
1056 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8
1057 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB
1058 #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC
1059 #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE
1060 #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF
1061 #define IB_PHYSPORTSTATE_CFG_ENH 0x10
1062 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13
1064 extern const int ib_qib_state_ops
[];
1066 extern __be64 ib_qib_sys_image_guid
; /* in network order */
1068 extern unsigned int ib_qib_lkey_table_size
;
1070 extern unsigned int ib_qib_max_cqes
;
1072 extern unsigned int ib_qib_max_cqs
;
1074 extern unsigned int ib_qib_max_qp_wrs
;
1076 extern unsigned int ib_qib_max_qps
;
1078 extern unsigned int ib_qib_max_sges
;
1080 extern unsigned int ib_qib_max_mcast_grps
;
1082 extern unsigned int ib_qib_max_mcast_qp_attached
;
1084 extern unsigned int ib_qib_max_srqs
;
1086 extern unsigned int ib_qib_max_srq_sges
;
1088 extern unsigned int ib_qib_max_srq_wrs
;
1090 extern const u32 ib_qib_rnr_table
[];
1092 extern struct ib_dma_mapping_ops qib_dma_mapping_ops
;
1094 #endif /* QIB_VERBS_H */