/* * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved. * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef QIB_VERBS_H #define QIB_VERBS_H #include #include #include #include #include #include #include #include #include #include struct qib_ctxtdata; struct qib_pportdata; struct qib_devdata; struct qib_verbs_txreq; #define QIB_MAX_RDMA_ATOMIC 16 #define QIB_GUIDS_PER_PORT 5 #define QPN_MAX (1 << 24) #define QPNMAP_ENTRIES (QPN_MAX / PAGE_SIZE / BITS_PER_BYTE) /* * Increment this value if any changes that break userspace ABI * compatibility are made. */ #define QIB_UVERBS_ABI_VERSION 2 /* * Define an ib_cq_notify value that is not valid so we know when CQ * notifications are armed. */ #define IB_CQ_NONE (IB_CQ_NEXT_COMP + 1) #define IB_SEQ_NAK (3 << 29) /* AETH NAK opcode values */ #define IB_RNR_NAK 0x20 #define IB_NAK_PSN_ERROR 0x60 #define IB_NAK_INVALID_REQUEST 0x61 #define IB_NAK_REMOTE_ACCESS_ERROR 0x62 #define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63 #define IB_NAK_INVALID_RD_REQUEST 0x64 /* Flags for checking QP state (see ib_qib_state_ops[]) */ #define QIB_POST_SEND_OK 0x01 #define QIB_POST_RECV_OK 0x02 #define QIB_PROCESS_RECV_OK 0x04 #define QIB_PROCESS_SEND_OK 0x08 #define QIB_PROCESS_NEXT_SEND_OK 0x10 #define QIB_FLUSH_SEND 0x20 #define QIB_FLUSH_RECV 0x40 #define QIB_PROCESS_OR_FLUSH_SEND \ (QIB_PROCESS_SEND_OK | QIB_FLUSH_SEND) /* IB Performance Manager status values */ #define IB_PMA_SAMPLE_STATUS_DONE 0x00 #define IB_PMA_SAMPLE_STATUS_STARTED 0x01 #define IB_PMA_SAMPLE_STATUS_RUNNING 0x02 /* Mandatory IB performance counter select values. */ #define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001) #define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002) #define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003) #define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004) #define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005) #define QIB_VENDOR_IPG cpu_to_be16(0xFFA0) #define IB_BTH_REQ_ACK (1 << 31) #define IB_BTH_SOLICITED (1 << 23) #define IB_BTH_MIG_REQ (1 << 22) /* XXX Should be defined in ib_verbs.h enum ib_port_cap_flags */ #define IB_PORT_OTHER_LOCAL_CHANGES_SUP (1 << 26) #define IB_GRH_VERSION 6 #define IB_GRH_VERSION_MASK 0xF #define IB_GRH_VERSION_SHIFT 28 #define IB_GRH_TCLASS_MASK 0xFF #define IB_GRH_TCLASS_SHIFT 20 #define IB_GRH_FLOW_MASK 0xFFFFF #define IB_GRH_FLOW_SHIFT 0 #define IB_GRH_NEXT_HDR 0x1B #define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL) /* Values for set/get portinfo VLCap OperationalVLs */ #define IB_VL_VL0 1 #define IB_VL_VL0_1 2 #define IB_VL_VL0_3 3 #define IB_VL_VL0_7 4 #define IB_VL_VL0_14 5 static inline int qib_num_vls(int vls) { switch (vls) { default: case IB_VL_VL0: return 1; case IB_VL_VL0_1: return 2; case IB_VL_VL0_3: return 4; case IB_VL_VL0_7: return 8; case IB_VL_VL0_14: return 15; } } struct ib_reth { __be64 vaddr; __be32 rkey; __be32 length; } __packed; struct ib_atomic_eth { __be32 vaddr[2]; /* unaligned so access as 2 32-bit words */ __be32 rkey; __be64 swap_data; __be64 compare_data; } __packed; struct qib_other_headers { __be32 bth[3]; union { struct { __be32 deth[2]; __be32 imm_data; } ud; struct { struct ib_reth reth; __be32 imm_data; } rc; struct { __be32 aeth; __be32 atomic_ack_eth[2]; } at; __be32 imm_data; __be32 aeth; struct ib_atomic_eth atomic_eth; } u; } __packed; /* * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes * long (72 w/ imm_data). Only the first 56 bytes of the IB header * will be in the eager header buffer. The remaining 12 or 16 bytes * are in the data buffer. */ struct qib_ib_header { __be16 lrh[4]; union { struct { struct ib_grh grh; struct qib_other_headers oth; } l; struct qib_other_headers oth; } u; } __packed; struct qib_pio_header { __le32 pbc[2]; struct qib_ib_header hdr; } __packed; /* * There is one struct qib_mcast for each multicast GID. * All attached QPs are then stored as a list of * struct qib_mcast_qp. */ struct qib_mcast_qp { struct list_head list; struct qib_qp *qp; }; struct qib_mcast { struct rb_node rb_node; union ib_gid mgid; struct list_head qp_list; wait_queue_head_t wait; atomic_t refcount; int n_attached; }; /* Protection domain */ struct qib_pd { struct ib_pd ibpd; int user; /* non-zero if created from user space */ }; /* Address Handle */ struct qib_ah { struct ib_ah ibah; struct ib_ah_attr attr; atomic_t refcount; }; /* * This structure is used by qib_mmap() to validate an offset * when an mmap() request is made. The vm_area_struct then uses * this as its vm_private_data. */ struct qib_mmap_info { struct list_head pending_mmaps; struct ib_ucontext *context; void *obj; __u64 offset; struct kref ref; unsigned size; }; /* * This structure is used to contain the head pointer, tail pointer, * and completion queue entries as a single memory allocation so * it can be mmap'ed into user space. */ struct qib_cq_wc { u32 head; /* index of next entry to fill */ u32 tail; /* index of next ib_poll_cq() entry */ union { /* these are actually size ibcq.cqe + 1 */ struct ib_uverbs_wc uqueue[0]; struct ib_wc kqueue[0]; }; }; /* * The completion queue structure. */ struct qib_cq { struct ib_cq ibcq; struct kthread_work comptask; struct qib_devdata *dd; spinlock_t lock; /* protect changes in this struct */ u8 notify; u8 triggered; struct qib_cq_wc *queue; struct qib_mmap_info *ip; }; /* * A segment is a linear region of low physical memory. * XXX Maybe we should use phys addr here and kmap()/kunmap(). * Used by the verbs layer. */ struct qib_seg { void *vaddr; size_t length; }; /* The number of qib_segs that fit in a page. */ #define QIB_SEGSZ (PAGE_SIZE / sizeof(struct qib_seg)) struct qib_segarray { struct qib_seg segs[QIB_SEGSZ]; }; struct qib_mregion { struct ib_pd *pd; /* shares refcnt of ibmr.pd */ u64 user_base; /* User's address for this region */ u64 iova; /* IB start address of this region */ size_t length; u32 lkey; u32 offset; /* offset (bytes) to start of region */ int access_flags; u32 max_segs; /* number of qib_segs in all the arrays */ u32 mapsz; /* size of the map array */ u8 page_shift; /* 0 - non unform/non powerof2 sizes */ u8 lkey_published; /* in global table */ struct completion comp; /* complete when refcount goes to zero */ struct rcu_head list; atomic_t refcount; struct qib_segarray *map[0]; /* the segments */ }; /* * These keep track of the copy progress within a memory region. * Used by the verbs layer. */ struct qib_sge { struct qib_mregion *mr; void *vaddr; /* kernel virtual address of segment */ u32 sge_length; /* length of the SGE */ u32 length; /* remaining length of the segment */ u16 m; /* current index: mr->map[m] */ u16 n; /* current index: mr->map[m]->segs[n] */ }; /* Memory region */ struct qib_mr { struct ib_mr ibmr; struct ib_umem *umem; struct qib_mregion mr; /* must be last */ }; /* * Send work request queue entry. * The size of the sg_list is determined when the QP is created and stored * in qp->s_max_sge. */ struct qib_swqe { struct ib_send_wr wr; /* don't use wr.sg_list */ u32 psn; /* first packet sequence number */ u32 lpsn; /* last packet sequence number */ u32 ssn; /* send sequence number */ u32 length; /* total length of data in sg_list */ struct qib_sge sg_list[0]; }; /* * Receive work request queue entry. * The size of the sg_list is determined when the QP (or SRQ) is created * and stored in qp->r_rq.max_sge (or srq->rq.max_sge). */ struct qib_rwqe { u64 wr_id; u8 num_sge; struct ib_sge sg_list[0]; }; /* * This structure is used to contain the head pointer, tail pointer, * and receive work queue entries as a single memory allocation so * it can be mmap'ed into user space. * Note that the wq array elements are variable size so you can't * just index into the array to get the N'th element; * use get_rwqe_ptr() instead. */ struct qib_rwq { u32 head; /* new work requests posted to the head */ u32 tail; /* receives pull requests from here. */ struct qib_rwqe wq[0]; }; struct qib_rq { struct qib_rwq *wq; u32 size; /* size of RWQE array */ u8 max_sge; spinlock_t lock /* protect changes in this struct */ ____cacheline_aligned_in_smp; }; struct qib_srq { struct ib_srq ibsrq; struct qib_rq rq; struct qib_mmap_info *ip; /* send signal when number of RWQEs < limit */ u32 limit; }; struct qib_sge_state { struct qib_sge *sg_list; /* next SGE to be used if any */ struct qib_sge sge; /* progress state for the current SGE */ u32 total_len; u8 num_sge; }; /* * This structure holds the information that the send tasklet needs * to send a RDMA read response or atomic operation. */ struct qib_ack_entry { u8 opcode; u8 sent; u32 psn; u32 lpsn; union { struct qib_sge rdma_sge; u64 atomic_data; }; }; /* * Variables prefixed with s_ are for the requester (sender). * Variables prefixed with r_ are for the responder (receiver). * Variables prefixed with ack_ are for responder replies. * * Common variables are protected by both r_rq.lock and s_lock in that order * which only happens in modify_qp() or changing the QP 'state'. */ struct qib_qp { struct ib_qp ibqp; /* read mostly fields above and below */ struct ib_ah_attr remote_ah_attr; struct ib_ah_attr alt_ah_attr; struct qib_qp __rcu *next; /* link list for QPN hash table */ struct qib_swqe *s_wq; /* send work queue */ struct qib_mmap_info *ip; struct qib_ib_header *s_hdr; /* next packet header to send */ unsigned long timeout_jiffies; /* computed from timeout */ enum ib_mtu path_mtu; u32 remote_qpn; u32 pmtu; /* decoded from path_mtu */ u32 qkey; /* QKEY for this QP (for UD or RD) */ u32 s_size; /* send work queue size */ u32 s_rnr_timeout; /* number of milliseconds for RNR timeout */ u8 state; /* QP state */ u8 qp_access_flags; u8 alt_timeout; /* Alternate path timeout for this QP */ u8 timeout; /* Timeout for this QP */ u8 s_srate; u8 s_mig_state; u8 port_num; u8 s_pkey_index; /* PKEY index to use */ u8 s_alt_pkey_index; /* Alternate path PKEY index to use */ u8 r_max_rd_atomic; /* max number of RDMA read/atomic to receive */ u8 s_max_rd_atomic; /* max number of RDMA read/atomic to send */ u8 s_retry_cnt; /* number of times to retry */ u8 s_rnr_retry_cnt; u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */ u8 s_max_sge; /* size of s_wq->sg_list */ u8 s_draining; /* start of read/write fields */ atomic_t refcount ____cacheline_aligned_in_smp; wait_queue_head_t wait; struct qib_ack_entry s_ack_queue[QIB_MAX_RDMA_ATOMIC + 1] ____cacheline_aligned_in_smp; struct qib_sge_state s_rdma_read_sge; spinlock_t r_lock ____cacheline_aligned_in_smp; /* used for APM */ unsigned long r_aflags; u64 r_wr_id; /* ID for current receive WQE */ u32 r_ack_psn; /* PSN for next ACK or atomic ACK */ u32 r_len; /* total length of r_sge */ u32 r_rcv_len; /* receive data len processed */ u32 r_psn; /* expected rcv packet sequence number */ u32 r_msn; /* message sequence number */ u8 r_state; /* opcode of last packet received */ u8 r_flags; u8 r_head_ack_queue; /* index into s_ack_queue[] */ struct list_head rspwait; /* link for waititing to respond */ struct qib_sge_state r_sge; /* current receive data */ struct qib_rq r_rq; /* receive work queue */ spinlock_t s_lock ____cacheline_aligned_in_smp; struct qib_sge_state *s_cur_sge; u32 s_flags; struct qib_verbs_txreq *s_tx; struct qib_swqe *s_wqe; struct qib_sge_state s_sge; /* current send request data */ struct qib_mregion *s_rdma_mr; atomic_t s_dma_busy; u32 s_cur_size; /* size of send packet in bytes */ u32 s_len; /* total length of s_sge */ u32 s_rdma_read_len; /* total length of s_rdma_read_sge */ u32 s_next_psn; /* PSN for next request */ u32 s_last_psn; /* last response PSN processed */ u32 s_sending_psn; /* lowest PSN that is being sent */ u32 s_sending_hpsn; /* highest PSN that is being sent */ u32 s_psn; /* current packet sequence number */ u32 s_ack_rdma_psn; /* PSN for sending RDMA read responses */ u32 s_ack_psn; /* PSN for acking sends and RDMA writes */ u32 s_head; /* new entries added here */ u32 s_tail; /* next entry to process */ u32 s_cur; /* current work queue entry */ u32 s_acked; /* last un-ACK'ed entry */ u32 s_last; /* last completed entry */ u32 s_ssn; /* SSN of tail entry */ u32 s_lsn; /* limit sequence number (credit) */ u16 s_hdrwords; /* size of s_hdr in 32 bit words */ u16 s_rdma_ack_cnt; u8 s_state; /* opcode of last packet sent */ u8 s_ack_state; /* opcode of packet to ACK */ u8 s_nak_state; /* non-zero if NAK is pending */ u8 r_nak_state; /* non-zero if NAK is pending */ u8 s_retry; /* requester retry counter */ u8 s_rnr_retry; /* requester RNR retry counter */ u8 s_num_rd_atomic; /* number of RDMA read/atomic pending */ u8 s_tail_ack_queue; /* index into s_ack_queue[] */ struct qib_sge_state s_ack_rdma_sge; struct timer_list s_timer; struct list_head iowait; /* link for wait PIO buf */ struct work_struct s_work; wait_queue_head_t wait_dma; struct qib_sge r_sg_list[0] /* verified SGEs */ ____cacheline_aligned_in_smp; }; /* * Atomic bit definitions for r_aflags. */ #define QIB_R_WRID_VALID 0 #define QIB_R_REWIND_SGE 1 /* * Bit definitions for r_flags. */ #define QIB_R_REUSE_SGE 0x01 #define QIB_R_RDMAR_SEQ 0x02 #define QIB_R_RSP_NAK 0x04 #define QIB_R_RSP_SEND 0x08 #define QIB_R_COMM_EST 0x10 /* * Bit definitions for s_flags. * * QIB_S_SIGNAL_REQ_WR - set if QP send WRs contain completion signaled * QIB_S_BUSY - send tasklet is processing the QP * QIB_S_TIMER - the RC retry timer is active * QIB_S_ACK_PENDING - an ACK is waiting to be sent after RDMA read/atomics * QIB_S_WAIT_FENCE - waiting for all prior RDMA read or atomic SWQEs * before processing the next SWQE * QIB_S_WAIT_RDMAR - waiting for a RDMA read or atomic SWQE to complete * before processing the next SWQE * QIB_S_WAIT_RNR - waiting for RNR timeout * QIB_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE * QIB_S_WAIT_DMA - waiting for send DMA queue to drain before generating * next send completion entry not via send DMA * QIB_S_WAIT_PIO - waiting for a send buffer to be available * QIB_S_WAIT_TX - waiting for a struct qib_verbs_txreq to be available * QIB_S_WAIT_DMA_DESC - waiting for DMA descriptors to be available * QIB_S_WAIT_KMEM - waiting for kernel memory to be available * QIB_S_WAIT_PSN - waiting for a packet to exit the send DMA queue * QIB_S_WAIT_ACK - waiting for an ACK packet before sending more requests * QIB_S_SEND_ONE - send one packet, request ACK, then wait for ACK */ #define QIB_S_SIGNAL_REQ_WR 0x0001 #define QIB_S_BUSY 0x0002 #define QIB_S_TIMER 0x0004 #define QIB_S_RESP_PENDING 0x0008 #define QIB_S_ACK_PENDING 0x0010 #define QIB_S_WAIT_FENCE 0x0020 #define QIB_S_WAIT_RDMAR 0x0040 #define QIB_S_WAIT_RNR 0x0080 #define QIB_S_WAIT_SSN_CREDIT 0x0100 #define QIB_S_WAIT_DMA 0x0200 #define QIB_S_WAIT_PIO 0x0400 #define QIB_S_WAIT_TX 0x0800 #define QIB_S_WAIT_DMA_DESC 0x1000 #define QIB_S_WAIT_KMEM 0x2000 #define QIB_S_WAIT_PSN 0x4000 #define QIB_S_WAIT_ACK 0x8000 #define QIB_S_SEND_ONE 0x10000 #define QIB_S_UNLIMITED_CREDIT 0x20000 /* * Wait flags that would prevent any packet type from being sent. */ #define QIB_S_ANY_WAIT_IO (QIB_S_WAIT_PIO | QIB_S_WAIT_TX | \ QIB_S_WAIT_DMA_DESC | QIB_S_WAIT_KMEM) /* * Wait flags that would prevent send work requests from making progress. */ #define QIB_S_ANY_WAIT_SEND (QIB_S_WAIT_FENCE | QIB_S_WAIT_RDMAR | \ QIB_S_WAIT_RNR | QIB_S_WAIT_SSN_CREDIT | QIB_S_WAIT_DMA | \ QIB_S_WAIT_PSN | QIB_S_WAIT_ACK) #define QIB_S_ANY_WAIT (QIB_S_ANY_WAIT_IO | QIB_S_ANY_WAIT_SEND) #define QIB_PSN_CREDIT 16 /* * Since struct qib_swqe is not a fixed size, we can't simply index into * struct qib_qp.s_wq. This function does the array index computation. */ static inline struct qib_swqe *get_swqe_ptr(struct qib_qp *qp, unsigned n) { return (struct qib_swqe *)((char *)qp->s_wq + (sizeof(struct qib_swqe) + qp->s_max_sge * sizeof(struct qib_sge)) * n); } /* * Since struct qib_rwqe is not a fixed size, we can't simply index into * struct qib_rwq.wq. This function does the array index computation. */ static inline struct qib_rwqe *get_rwqe_ptr(struct qib_rq *rq, unsigned n) { return (struct qib_rwqe *) ((char *) rq->wq->wq + (sizeof(struct qib_rwqe) + rq->max_sge * sizeof(struct ib_sge)) * n); } /* * QPN-map pages start out as NULL, they get allocated upon * first use and are never deallocated. This way, * large bitmaps are not allocated unless large numbers of QPs are used. */ struct qpn_map { void *page; }; struct qib_qpn_table { spinlock_t lock; /* protect changes in this struct */ unsigned flags; /* flags for QP0/1 allocated for each port */ u32 last; /* last QP number allocated */ u32 nmaps; /* size of the map table */ u16 limit; u16 mask; /* bit map of free QP numbers other than 0/1 */ struct qpn_map map[QPNMAP_ENTRIES]; }; struct qib_lkey_table { spinlock_t lock; /* protect changes in this struct */ u32 next; /* next unused index (speeds search) */ u32 gen; /* generation count */ u32 max; /* size of the table */ struct qib_mregion __rcu **table; }; struct qib_opcode_stats { u64 n_packets; /* number of packets */ u64 n_bytes; /* total number of bytes */ }; struct qib_opcode_stats_perctx { struct qib_opcode_stats stats[128]; }; struct qib_pma_counters { u64 n_unicast_xmit; /* total unicast packets sent */ u64 n_unicast_rcv; /* total unicast packets received */ u64 n_multicast_xmit; /* total multicast packets sent */ u64 n_multicast_rcv; /* total multicast packets received */ }; struct qib_ibport { struct qib_qp __rcu *qp0; struct qib_qp __rcu *qp1; struct ib_mad_agent *send_agent; /* agent for SMI (traps) */ struct qib_ah *sm_ah; struct qib_ah *smi_ah; struct rb_root mcast_tree; spinlock_t lock; /* protect changes in this struct */ /* non-zero when timer is set */ unsigned long mkey_lease_timeout; unsigned long trap_timeout; __be64 gid_prefix; /* in network order */ __be64 mkey; __be64 guids[QIB_GUIDS_PER_PORT - 1]; /* writable GUIDs */ u64 tid; /* TID for traps */ struct qib_pma_counters __percpu *pmastats; u64 z_unicast_xmit; /* starting count for PMA */ u64 z_unicast_rcv; /* starting count for PMA */ u64 z_multicast_xmit; /* starting count for PMA */ u64 z_multicast_rcv; /* starting count for PMA */ u64 z_symbol_error_counter; /* starting count for PMA */ u64 z_link_error_recovery_counter; /* starting count for PMA */ u64 z_link_downed_counter; /* starting count for PMA */ u64 z_port_rcv_errors; /* starting count for PMA */ u64 z_port_rcv_remphys_errors; /* starting count for PMA */ u64 z_port_xmit_discards; /* starting count for PMA */ u64 z_port_xmit_data; /* starting count for PMA */ u64 z_port_rcv_data; /* starting count for PMA */ u64 z_port_xmit_packets; /* starting count for PMA */ u64 z_port_rcv_packets; /* starting count for PMA */ u32 z_local_link_integrity_errors; /* starting count for PMA */ u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */ u32 z_vl15_dropped; /* starting count for PMA */ u32 n_rc_resends; u32 n_rc_acks; u32 n_rc_qacks; u32 n_rc_delayed_comp; u32 n_seq_naks; u32 n_rdma_seq; u32 n_rnr_naks; u32 n_other_naks; u32 n_loop_pkts; u32 n_pkt_drops; u32 n_vl15_dropped; u32 n_rc_timeouts; u32 n_dmawait; u32 n_unaligned; u32 n_rc_dupreq; u32 n_rc_seqnak; u32 port_cap_flags; u32 pma_sample_start; u32 pma_sample_interval; __be16 pma_counter_select[5]; u16 pma_tag; u16 pkey_violations; u16 qkey_violations; u16 mkey_violations; u16 mkey_lease_period; u16 sm_lid; u16 repress_traps; u8 sm_sl; u8 mkeyprot; u8 subnet_timeout; u8 vl_high_limit; u8 sl_to_vl[16]; }; struct qib_ibdev { struct ib_device ibdev; struct list_head pending_mmaps; spinlock_t mmap_offset_lock; /* protect mmap_offset */ u32 mmap_offset; struct qib_mregion __rcu *dma_mr; /* QP numbers are shared by all IB ports */ struct qib_qpn_table qpn_table; struct qib_lkey_table lk_table; struct list_head piowait; /* list for wait PIO buf */ struct list_head dmawait; /* list for wait DMA */ struct list_head txwait; /* list for wait qib_verbs_txreq */ struct list_head memwait; /* list for wait kernel memory */ struct list_head txreq_free; struct timer_list mem_timer; struct qib_qp __rcu **qp_table; struct qib_pio_header *pio_hdrs; dma_addr_t pio_hdrs_phys; /* list of QPs waiting for RNR timer */ spinlock_t pending_lock; /* protect wait lists, PMA counters, etc. */ u32 qp_table_size; /* size of the hash table */ u32 qp_rnd; /* random bytes for hash */ spinlock_t qpt_lock; u32 n_piowait; u32 n_txwait; u32 n_pds_allocated; /* number of PDs allocated for device */ spinlock_t n_pds_lock; u32 n_ahs_allocated; /* number of AHs allocated for device */ spinlock_t n_ahs_lock; u32 n_cqs_allocated; /* number of CQs allocated for device */ spinlock_t n_cqs_lock; u32 n_qps_allocated; /* number of QPs allocated for device */ spinlock_t n_qps_lock; u32 n_srqs_allocated; /* number of SRQs allocated for device */ spinlock_t n_srqs_lock; u32 n_mcast_grps_allocated; /* number of mcast groups allocated */ spinlock_t n_mcast_grps_lock; #ifdef CONFIG_DEBUG_FS /* per HCA debugfs */ struct dentry *qib_ibdev_dbg; #endif }; struct qib_verbs_counters { u64 symbol_error_counter; u64 link_error_recovery_counter; u64 link_downed_counter; u64 port_rcv_errors; u64 port_rcv_remphys_errors; u64 port_xmit_discards; u64 port_xmit_data; u64 port_rcv_data; u64 port_xmit_packets; u64 port_rcv_packets; u32 local_link_integrity_errors; u32 excessive_buffer_overrun_errors; u32 vl15_dropped; }; static inline struct qib_mr *to_imr(struct ib_mr *ibmr) { return container_of(ibmr, struct qib_mr, ibmr); } static inline struct qib_pd *to_ipd(struct ib_pd *ibpd) { return container_of(ibpd, struct qib_pd, ibpd); } static inline struct qib_ah *to_iah(struct ib_ah *ibah) { return container_of(ibah, struct qib_ah, ibah); } static inline struct qib_cq *to_icq(struct ib_cq *ibcq) { return container_of(ibcq, struct qib_cq, ibcq); } static inline struct qib_srq *to_isrq(struct ib_srq *ibsrq) { return container_of(ibsrq, struct qib_srq, ibsrq); } static inline struct qib_qp *to_iqp(struct ib_qp *ibqp) { return container_of(ibqp, struct qib_qp, ibqp); } static inline struct qib_ibdev *to_idev(struct ib_device *ibdev) { return container_of(ibdev, struct qib_ibdev, ibdev); } /* * Send if not busy or waiting for I/O and either * a RC response is pending or we can process send work requests. */ static inline int qib_send_ok(struct qib_qp *qp) { return !(qp->s_flags & (QIB_S_BUSY | QIB_S_ANY_WAIT_IO)) && (qp->s_hdrwords || (qp->s_flags & QIB_S_RESP_PENDING) || !(qp->s_flags & QIB_S_ANY_WAIT_SEND)); } /* * This must be called with s_lock held. */ void qib_schedule_send(struct qib_qp *qp); static inline int qib_pkey_ok(u16 pkey1, u16 pkey2) { u16 p1 = pkey1 & 0x7FFF; u16 p2 = pkey2 & 0x7FFF; /* * Low 15 bits must be non-zero and match, and * one of the two must be a full member. */ return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0); } void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl, u32 qp1, u32 qp2, __be16 lid1, __be16 lid2); void qib_cap_mask_chg(struct qib_ibport *ibp); void qib_sys_guid_chg(struct qib_ibport *ibp); void qib_node_desc_chg(struct qib_ibport *ibp); int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh, const struct ib_mad *in_mad, struct ib_mad *out_mad); int qib_create_agents(struct qib_ibdev *dev); void qib_free_agents(struct qib_ibdev *dev); /* * Compare the lower 24 bits of the two values. * Returns an integer <, ==, or > than zero. */ static inline int qib_cmp24(u32 a, u32 b) { return (((int) a) - ((int) b)) << 8; } struct qib_mcast *qib_mcast_find(struct qib_ibport *ibp, union ib_gid *mgid); int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords, u64 *rwords, u64 *spkts, u64 *rpkts, u64 *xmit_wait); int qib_get_counters(struct qib_pportdata *ppd, struct qib_verbs_counters *cntrs); int qib_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); int qib_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); int qib_mcast_tree_empty(struct qib_ibport *ibp); __be32 qib_compute_aeth(struct qib_qp *qp); struct qib_qp *qib_lookup_qpn(struct qib_ibport *ibp, u32 qpn); struct ib_qp *qib_create_qp(struct ib_pd *ibpd, struct ib_qp_init_attr *init_attr, struct ib_udata *udata); int qib_destroy_qp(struct ib_qp *ibqp); int qib_error_qp(struct qib_qp *qp, enum ib_wc_status err); int qib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_udata *udata); int qib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_qp_init_attr *init_attr); unsigned qib_free_all_qps(struct qib_devdata *dd); void qib_init_qpn_table(struct qib_devdata *dd, struct qib_qpn_table *qpt); void qib_free_qpn_table(struct qib_qpn_table *qpt); #ifdef CONFIG_DEBUG_FS struct qib_qp_iter; struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev); int qib_qp_iter_next(struct qib_qp_iter *iter); void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter); #endif void qib_get_credit(struct qib_qp *qp, u32 aeth); unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult); void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail); void qib_put_txreq(struct qib_verbs_txreq *tx); int qib_verbs_send(struct qib_qp *qp, struct qib_ib_header *hdr, u32 hdrwords, struct qib_sge_state *ss, u32 len); void qib_copy_sge(struct qib_sge_state *ss, void *data, u32 length, int release); void qib_skip_sge(struct qib_sge_state *ss, u32 length, int release); void qib_uc_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, int has_grh, void *data, u32 tlen, struct qib_qp *qp); void qib_rc_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr, int has_grh, void *data, u32 tlen, struct qib_qp *qp); int qib_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr); struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid); void qib_rc_rnr_retry(unsigned long arg); void qib_rc_send_complete(struct qib_qp *qp, struct qib_ib_header *hdr); void qib_rc_error(struct qib_qp *qp, enum ib_wc_status err); int qib_post_ud_send(struct qib_qp *qp, struct ib_send_wr *wr); void qib_ud_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, int has_grh, void *data, u32 tlen, struct qib_qp *qp); int qib_alloc_lkey(struct qib_mregion *mr, int dma_region); void qib_free_lkey(struct qib_mregion *mr); int qib_lkey_ok(struct qib_lkey_table *rkt, struct qib_pd *pd, struct qib_sge *isge, struct ib_sge *sge, int acc); int qib_rkey_ok(struct qib_qp *qp, struct qib_sge *sge, u32 len, u64 vaddr, u32 rkey, int acc); int qib_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr, struct ib_recv_wr **bad_wr); struct ib_srq *qib_create_srq(struct ib_pd *ibpd, struct ib_srq_init_attr *srq_init_attr, struct ib_udata *udata); int qib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, enum ib_srq_attr_mask attr_mask, struct ib_udata *udata); int qib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr); int qib_destroy_srq(struct ib_srq *ibsrq); int qib_cq_init(struct qib_devdata *dd); void qib_cq_exit(struct qib_devdata *dd); void qib_cq_enter(struct qib_cq *cq, struct ib_wc *entry, int sig); int qib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry); struct ib_cq *qib_create_cq(struct ib_device *ibdev, const struct ib_cq_init_attr *attr, struct ib_ucontext *context, struct ib_udata *udata); int qib_destroy_cq(struct ib_cq *ibcq); int qib_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags); int qib_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata); struct ib_mr *qib_get_dma_mr(struct ib_pd *pd, int acc); struct ib_mr *qib_reg_phys_mr(struct ib_pd *pd, struct ib_phys_buf *buffer_list, int num_phys_buf, int acc, u64 *iova_start); struct ib_mr *qib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, u64 virt_addr, int mr_access_flags, struct ib_udata *udata); int qib_dereg_mr(struct ib_mr *ibmr); struct ib_mr *qib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len); struct ib_fast_reg_page_list *qib_alloc_fast_reg_page_list( struct ib_device *ibdev, int page_list_len); void qib_free_fast_reg_page_list(struct ib_fast_reg_page_list *pl); int qib_fast_reg_mr(struct qib_qp *qp, struct ib_send_wr *wr); struct ib_fmr *qib_alloc_fmr(struct ib_pd *pd, int mr_access_flags, struct ib_fmr_attr *fmr_attr); int qib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int list_len, u64 iova); int qib_unmap_fmr(struct list_head *fmr_list); int qib_dealloc_fmr(struct ib_fmr *ibfmr); static inline void qib_get_mr(struct qib_mregion *mr) { atomic_inc(&mr->refcount); } void mr_rcu_callback(struct rcu_head *list); static inline void qib_put_mr(struct qib_mregion *mr) { if (unlikely(atomic_dec_and_test(&mr->refcount))) call_rcu(&mr->list, mr_rcu_callback); } static inline void qib_put_ss(struct qib_sge_state *ss) { while (ss->num_sge) { qib_put_mr(ss->sge.mr); if (--ss->num_sge) ss->sge = *ss->sg_list++; } } void qib_release_mmap_info(struct kref *ref); struct qib_mmap_info *qib_create_mmap_info(struct qib_ibdev *dev, u32 size, struct ib_ucontext *context, void *obj); void qib_update_mmap_info(struct qib_ibdev *dev, struct qib_mmap_info *ip, u32 size, void *obj); int qib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma); int qib_get_rwqe(struct qib_qp *qp, int wr_id_only); void qib_migrate_qp(struct qib_qp *qp); int qib_ruc_check_hdr(struct qib_ibport *ibp, struct qib_ib_header *hdr, int has_grh, struct qib_qp *qp, u32 bth0); u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr, struct ib_global_route *grh, u32 hwords, u32 nwords); void qib_make_ruc_header(struct qib_qp *qp, struct qib_other_headers *ohdr, u32 bth0, u32 bth2); void qib_do_send(struct work_struct *work); void qib_send_complete(struct qib_qp *qp, struct qib_swqe *wqe, enum ib_wc_status status); void qib_send_rc_ack(struct qib_qp *qp); int qib_make_rc_req(struct qib_qp *qp); int qib_make_uc_req(struct qib_qp *qp); int qib_make_ud_req(struct qib_qp *qp); int qib_register_ib_device(struct qib_devdata *); void qib_unregister_ib_device(struct qib_devdata *); void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32); void qib_ib_piobufavail(struct qib_devdata *); unsigned qib_get_npkeys(struct qib_devdata *); unsigned qib_get_pkey(struct qib_ibport *, unsigned); extern const enum ib_wc_opcode ib_qib_wc_opcode[]; /* * Below HCA-independent IB PhysPortState values, returned * by the f_ibphys_portstate() routine. */ #define IB_PHYSPORTSTATE_SLEEP 1 #define IB_PHYSPORTSTATE_POLL 2 #define IB_PHYSPORTSTATE_DISABLED 3 #define IB_PHYSPORTSTATE_CFG_TRAIN 4 #define IB_PHYSPORTSTATE_LINKUP 5 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF #define IB_PHYSPORTSTATE_CFG_ENH 0x10 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13 extern const int ib_qib_state_ops[]; extern __be64 ib_qib_sys_image_guid; /* in network order */ extern unsigned int ib_qib_lkey_table_size; extern unsigned int ib_qib_max_cqes; extern unsigned int ib_qib_max_cqs; extern unsigned int ib_qib_max_qp_wrs; extern unsigned int ib_qib_max_qps; extern unsigned int ib_qib_max_sges; extern unsigned int ib_qib_max_mcast_grps; extern unsigned int ib_qib_max_mcast_qp_attached; extern unsigned int ib_qib_max_srqs; extern unsigned int ib_qib_max_srq_sges; extern unsigned int ib_qib_max_srq_wrs; extern const u32 ib_qib_rnr_table[]; extern struct ib_dma_mapping_ops qib_dma_mapping_ops; #endif /* QIB_VERBS_H */