diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_verbs.h')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.h | 935 |
1 files changed, 935 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h new file mode 100644 index 0000000..9d12ae8 --- /dev/null +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h @@ -0,0 +1,935 @@ +/* + * Copyright (c) 2006, 2007, 2008 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 IPATH_VERBS_H +#define IPATH_VERBS_H + +#include <linux/types.h> +#include <linux/spinlock.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/kref.h> +#include <rdma/ib_pack.h> +#include <rdma/ib_user_verbs.h> + +#include "ipath_kernel.h" + +#define IPATH_MAX_RDMA_ATOMIC 4 + +#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 IPATH_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) + +/* 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_ipath_state_ops[]) */ +#define IPATH_POST_SEND_OK 0x01 +#define IPATH_POST_RECV_OK 0x02 +#define IPATH_PROCESS_RECV_OK 0x04 +#define IPATH_PROCESS_SEND_OK 0x08 +#define IPATH_PROCESS_NEXT_SEND_OK 0x10 +#define IPATH_FLUSH_SEND 0x20 +#define IPATH_FLUSH_RECV 0x40 +#define IPATH_PROCESS_OR_FLUSH_SEND \ + (IPATH_PROCESS_SEND_OK | IPATH_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 __constant_htons(0x0001) +#define IB_PMA_PORT_RCV_DATA __constant_htons(0x0002) +#define IB_PMA_PORT_XMIT_PKTS __constant_htons(0x0003) +#define IB_PMA_PORT_RCV_PKTS __constant_htons(0x0004) +#define IB_PMA_PORT_XMIT_WAIT __constant_htons(0x0005) + +struct ib_reth { + __be64 vaddr; + __be32 rkey; + __be32 length; +} __attribute__ ((packed)); + +struct ib_atomic_eth { + __be32 vaddr[2]; /* unaligned so access as 2 32-bit words */ + __be32 rkey; + __be64 swap_data; + __be64 compare_data; +} __attribute__ ((packed)); + +struct ipath_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; +} __attribute__ ((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 ipath_ib_header { + __be16 lrh[4]; + union { + struct { + struct ib_grh grh; + struct ipath_other_headers oth; + } l; + struct ipath_other_headers oth; + } u; +} __attribute__ ((packed)); + +struct ipath_pio_header { + __le32 pbc[2]; + struct ipath_ib_header hdr; +} __attribute__ ((packed)); + +/* + * There is one struct ipath_mcast for each multicast GID. + * All attached QPs are then stored as a list of + * struct ipath_mcast_qp. + */ +struct ipath_mcast_qp { + struct list_head list; + struct ipath_qp *qp; +}; + +struct ipath_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 ipath_pd { + struct ib_pd ibpd; + int user; /* non-zero if created from user space */ +}; + +/* Address Handle */ +struct ipath_ah { + struct ib_ah ibah; + struct ib_ah_attr attr; +}; + +/* + * This structure is used by ipath_mmap() to validate an offset + * when an mmap() request is made. The vm_area_struct then uses + * this as its vm_private_data. + */ +struct ipath_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 ipath_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 ipath_cq { + struct ib_cq ibcq; + struct tasklet_struct comptask; + spinlock_t lock; + u8 notify; + u8 triggered; + struct ipath_cq_wc *queue; + struct ipath_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 ipath_seg { + void *vaddr; + size_t length; +}; + +/* The number of ipath_segs that fit in a page. */ +#define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg)) + +struct ipath_segarray { + struct ipath_seg segs[IPATH_SEGSZ]; +}; + +struct ipath_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 ipath_segs in all the arrays */ + u32 mapsz; /* size of the map array */ + struct ipath_segarray *map[0]; /* the segments */ +}; + +/* + * These keep track of the copy progress within a memory region. + * Used by the verbs layer. + */ +struct ipath_sge { + struct ipath_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 ipath_mr { + struct ib_mr ibmr; + struct ib_umem *umem; + struct ipath_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 ipath_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 ipath_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 ipath_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 ipath_rwq { + u32 head; /* new work requests posted to the head */ + u32 tail; /* receives pull requests from here. */ + struct ipath_rwqe wq[0]; +}; + +struct ipath_rq { + struct ipath_rwq *wq; + spinlock_t lock; + u32 size; /* size of RWQE array */ + u8 max_sge; +}; + +struct ipath_srq { + struct ib_srq ibsrq; + struct ipath_rq rq; + struct ipath_mmap_info *ip; + /* send signal when number of RWQEs < limit */ + u32 limit; +}; + +struct ipath_sge_state { + struct ipath_sge *sg_list; /* next SGE to be used if any */ + struct ipath_sge sge; /* progress state for the current SGE */ + u8 num_sge; + u8 static_rate; +}; + +/* + * This structure holds the information that the send tasklet needs + * to send a RDMA read response or atomic operation. + */ +struct ipath_ack_entry { + u8 opcode; + u8 sent; + u32 psn; + union { + struct ipath_sge_state 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 ipath_qp { + struct ib_qp ibqp; + struct ipath_qp *next; /* link list for QPN hash table */ + struct ipath_qp *timer_next; /* link list for ipath_ib_timer() */ + struct ipath_qp *pio_next; /* link for ipath_ib_piobufavail() */ + struct list_head piowait; /* link for wait PIO buf */ + struct list_head timerwait; /* link for waiting for timeouts */ + struct ib_ah_attr remote_ah_attr; + struct ipath_ib_header s_hdr; /* next packet header to send */ + atomic_t refcount; + wait_queue_head_t wait; + wait_queue_head_t wait_dma; + struct tasklet_struct s_task; + struct ipath_mmap_info *ip; + struct ipath_sge_state *s_cur_sge; + struct ipath_verbs_txreq *s_tx; + struct ipath_sge_state s_sge; /* current send request data */ + struct ipath_ack_entry s_ack_queue[IPATH_MAX_RDMA_ATOMIC + 1]; + struct ipath_sge_state s_ack_rdma_sge; + struct ipath_sge_state s_rdma_read_sge; + struct ipath_sge_state r_sge; /* current receive data */ + spinlock_t s_lock; + atomic_t s_dma_busy; + u16 s_pkt_delay; + u16 s_hdrwords; /* size of s_hdr in 32 bit words */ + 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_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_rnr_timeout; /* number of milliseconds for RNR timeout */ + u32 r_ack_psn; /* PSN for next ACK or atomic ACK */ + u64 r_wr_id; /* ID for current receive WQE */ + unsigned long r_aflags; + 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 state; /* QP state */ + 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_state; /* opcode of last packet received */ + u8 r_nak_state; /* non-zero if NAK is pending */ + u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */ + u8 r_flags; + u8 r_max_rd_atomic; /* max number of RDMA read/atomic to receive */ + u8 r_head_ack_queue; /* index into s_ack_queue[] */ + u8 qp_access_flags; + u8 s_max_sge; /* size of s_wq->sg_list */ + u8 s_retry_cnt; /* number of times to retry */ + u8 s_rnr_retry_cnt; + u8 s_retry; /* requester retry counter */ + u8 s_rnr_retry; /* requester RNR retry counter */ + u8 s_pkey_index; /* PKEY index to use */ + u8 s_max_rd_atomic; /* max number of RDMA read/atomic to send */ + u8 s_num_rd_atomic; /* number of RDMA read/atomic pending */ + u8 s_tail_ack_queue; /* index into s_ack_queue[] */ + u8 s_flags; + u8 s_dmult; + u8 s_draining; + u8 timeout; /* Timeout for this QP */ + enum ib_mtu path_mtu; + u32 remote_qpn; + u32 qkey; /* QKEY for this QP (for UD or RD) */ + u32 s_size; /* send work queue size */ + u32 s_head; /* new entries added here */ + u32 s_tail; /* next entry to process */ + u32 s_cur; /* current work queue entry */ + u32 s_last; /* last un-ACK'ed entry */ + u32 s_ssn; /* SSN of tail entry */ + u32 s_lsn; /* limit sequence number (credit) */ + struct ipath_swqe *s_wq; /* send work queue */ + struct ipath_swqe *s_wqe; + struct ipath_rq r_rq; /* receive work queue */ + struct ipath_sge r_sg_list[0]; /* verified SGEs */ +}; + +/* + * Atomic bit definitions for r_aflags. + */ +#define IPATH_R_WRID_VALID 0 + +/* + * Bit definitions for r_flags. + */ +#define IPATH_R_REUSE_SGE 0x01 +#define IPATH_R_RDMAR_SEQ 0x02 + +/* + * Bit definitions for s_flags. + * + * IPATH_S_FENCE_PENDING - waiting for all prior RDMA read or atomic SWQEs + * before processing the next SWQE + * IPATH_S_RDMAR_PENDING - waiting for any RDMA read or atomic SWQEs + * before processing the next SWQE + * IPATH_S_WAITING - waiting for RNR timeout or send buffer available. + * IPATH_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE + * IPATH_S_WAIT_DMA - waiting for send DMA queue to drain before generating + * next send completion entry not via send DMA. + */ +#define IPATH_S_SIGNAL_REQ_WR 0x01 +#define IPATH_S_FENCE_PENDING 0x02 +#define IPATH_S_RDMAR_PENDING 0x04 +#define IPATH_S_ACK_PENDING 0x08 +#define IPATH_S_BUSY 0x10 +#define IPATH_S_WAITING 0x20 +#define IPATH_S_WAIT_SSN_CREDIT 0x40 +#define IPATH_S_WAIT_DMA 0x80 + +#define IPATH_S_ANY_WAIT (IPATH_S_FENCE_PENDING | IPATH_S_RDMAR_PENDING | \ + IPATH_S_WAITING | IPATH_S_WAIT_SSN_CREDIT | IPATH_S_WAIT_DMA) + +#define IPATH_PSN_CREDIT 512 + +/* + * Since struct ipath_swqe is not a fixed size, we can't simply index into + * struct ipath_qp.s_wq. This function does the array index computation. + */ +static inline struct ipath_swqe *get_swqe_ptr(struct ipath_qp *qp, + unsigned n) +{ + return (struct ipath_swqe *)((char *)qp->s_wq + + (sizeof(struct ipath_swqe) + + qp->s_max_sge * + sizeof(struct ipath_sge)) * n); +} + +/* + * Since struct ipath_rwqe is not a fixed size, we can't simply index into + * struct ipath_rwq.wq. This function does the array index computation. + */ +static inline struct ipath_rwqe *get_rwqe_ptr(struct ipath_rq *rq, + unsigned n) +{ + return (struct ipath_rwqe *) + ((char *) rq->wq->wq + + (sizeof(struct ipath_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 { + atomic_t n_free; + void *page; +}; + +struct ipath_qp_table { + spinlock_t lock; + u32 last; /* last QP number allocated */ + u32 max; /* size of the hash table */ + u32 nmaps; /* size of the map table */ + struct ipath_qp **table; + /* bit map of free numbers */ + struct qpn_map map[QPNMAP_ENTRIES]; +}; + +struct ipath_lkey_table { + spinlock_t lock; + u32 next; /* next unused index (speeds search) */ + u32 gen; /* generation count */ + u32 max; /* size of the table */ + struct ipath_mregion **table; +}; + +struct ipath_opcode_stats { + u64 n_packets; /* number of packets */ + u64 n_bytes; /* total number of bytes */ +}; + +struct ipath_ibdev { + struct ib_device ibdev; + struct ipath_devdata *dd; + struct list_head pending_mmaps; + spinlock_t mmap_offset_lock; + u32 mmap_offset; + int ib_unit; /* This is the device number */ + u16 sm_lid; /* in host order */ + u8 sm_sl; + u8 mkeyprot; + /* non-zero when timer is set */ + unsigned long mkey_lease_timeout; + + /* The following fields are really per port. */ + struct ipath_qp_table qp_table; + struct ipath_lkey_table lk_table; + struct list_head pending[3]; /* FIFO of QPs waiting for ACKs */ + struct list_head piowait; /* list for wait PIO buf */ + struct list_head txreq_free; + void *txreq_bufs; + /* list of QPs waiting for RNR timer */ + struct list_head rnrwait; + spinlock_t pending_lock; + __be64 sys_image_guid; /* in network order */ + __be64 gid_prefix; /* in network order */ + __be64 mkey; + + 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; + + u64 ipath_sword; /* total dwords sent (sample result) */ + u64 ipath_rword; /* total dwords received (sample result) */ + u64 ipath_spkts; /* total packets sent (sample result) */ + u64 ipath_rpkts; /* total packets received (sample result) */ + /* # of ticks no data sent (sample result) */ + u64 ipath_xmit_wait; + u64 rcv_errors; /* # of packets with SW detected rcv errs */ + 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 */ + 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_pkey_violations; /* 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_seq_naks; + u32 n_rdma_seq; + u32 n_rnr_naks; + u32 n_other_naks; + u32 n_timeouts; + u32 n_pkt_drops; + u32 n_vl15_dropped; + u32 n_wqe_errs; + u32 n_rdma_dup_busy; + u32 n_piowait; + u32 n_unaligned; + u32 port_cap_flags; + u32 pma_sample_start; + u32 pma_sample_interval; + __be16 pma_counter_select[5]; + u16 pma_tag; + u16 qkey_violations; + u16 mkey_violations; + u16 mkey_lease_period; + u16 pending_index; /* which pending queue is active */ + u8 pma_sample_status; + u8 subnet_timeout; + u8 vl_high_limit; + struct ipath_opcode_stats opstats[128]; +}; + +struct ipath_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; +}; + +struct ipath_verbs_txreq { + struct ipath_qp *qp; + struct ipath_swqe *wqe; + u32 map_len; + u32 len; + struct ipath_sge_state *ss; + struct ipath_pio_header hdr; + struct ipath_sdma_txreq txreq; +}; + +static inline struct ipath_mr *to_imr(struct ib_mr *ibmr) +{ + return container_of(ibmr, struct ipath_mr, ibmr); +} + +static inline struct ipath_pd *to_ipd(struct ib_pd *ibpd) +{ + return container_of(ibpd, struct ipath_pd, ibpd); +} + +static inline struct ipath_ah *to_iah(struct ib_ah *ibah) +{ + return container_of(ibah, struct ipath_ah, ibah); +} + +static inline struct ipath_cq *to_icq(struct ib_cq *ibcq) +{ + return container_of(ibcq, struct ipath_cq, ibcq); +} + +static inline struct ipath_srq *to_isrq(struct ib_srq *ibsrq) +{ + return container_of(ibsrq, struct ipath_srq, ibsrq); +} + +static inline struct ipath_qp *to_iqp(struct ib_qp *ibqp) +{ + return container_of(ibqp, struct ipath_qp, ibqp); +} + +static inline struct ipath_ibdev *to_idev(struct ib_device *ibdev) +{ + return container_of(ibdev, struct ipath_ibdev, ibdev); +} + +/* + * This must be called with s_lock held. + */ +static inline void ipath_schedule_send(struct ipath_qp *qp) +{ + if (qp->s_flags & IPATH_S_ANY_WAIT) + qp->s_flags &= ~IPATH_S_ANY_WAIT; + if (!(qp->s_flags & IPATH_S_BUSY)) + tasklet_hi_schedule(&qp->s_task); +} + +int ipath_process_mad(struct ib_device *ibdev, + int mad_flags, + u8 port_num, + struct ib_wc *in_wc, + struct ib_grh *in_grh, + struct ib_mad *in_mad, struct ib_mad *out_mad); + +/* + * Compare the lower 24 bits of the two values. + * Returns an integer <, ==, or > than zero. + */ +static inline int ipath_cmp24(u32 a, u32 b) +{ + return (((int) a) - ((int) b)) << 8; +} + +struct ipath_mcast *ipath_mcast_find(union ib_gid *mgid); + +int ipath_snapshot_counters(struct ipath_devdata *dd, u64 *swords, + u64 *rwords, u64 *spkts, u64 *rpkts, + u64 *xmit_wait); + +int ipath_get_counters(struct ipath_devdata *dd, + struct ipath_verbs_counters *cntrs); + +int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); + +int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); + +int ipath_mcast_tree_empty(void); + +__be32 ipath_compute_aeth(struct ipath_qp *qp); + +struct ipath_qp *ipath_lookup_qpn(struct ipath_qp_table *qpt, u32 qpn); + +struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, + struct ib_qp_init_attr *init_attr, + struct ib_udata *udata); + +int ipath_destroy_qp(struct ib_qp *ibqp); + +int ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err); + +int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, + int attr_mask, struct ib_udata *udata); + +int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, + int attr_mask, struct ib_qp_init_attr *init_attr); + +unsigned ipath_free_all_qps(struct ipath_qp_table *qpt); + +int ipath_init_qp_table(struct ipath_ibdev *idev, int size); + +void ipath_get_credit(struct ipath_qp *qp, u32 aeth); + +unsigned ipath_ib_rate_to_mult(enum ib_rate rate); + +int ipath_verbs_send(struct ipath_qp *qp, struct ipath_ib_header *hdr, + u32 hdrwords, struct ipath_sge_state *ss, u32 len); + +void ipath_copy_sge(struct ipath_sge_state *ss, void *data, u32 length); + +void ipath_skip_sge(struct ipath_sge_state *ss, u32 length); + +void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, + int has_grh, void *data, u32 tlen, struct ipath_qp *qp); + +void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, + int has_grh, void *data, u32 tlen, struct ipath_qp *qp); + +void ipath_restart_rc(struct ipath_qp *qp, u32 psn); + +void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err); + +int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr); + +void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, + int has_grh, void *data, u32 tlen, struct ipath_qp *qp); + +int ipath_alloc_lkey(struct ipath_lkey_table *rkt, + struct ipath_mregion *mr); + +void ipath_free_lkey(struct ipath_lkey_table *rkt, u32 lkey); + +int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge, + struct ib_sge *sge, int acc); + +int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss, + u32 len, u64 vaddr, u32 rkey, int acc); + +int ipath_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr, + struct ib_recv_wr **bad_wr); + +struct ib_srq *ipath_create_srq(struct ib_pd *ibpd, + struct ib_srq_init_attr *srq_init_attr, + struct ib_udata *udata); + +int ipath_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, + enum ib_srq_attr_mask attr_mask, + struct ib_udata *udata); + +int ipath_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr); + +int ipath_destroy_srq(struct ib_srq *ibsrq); + +void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int sig); + +int ipath_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry); + +struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, int comp_vector, + struct ib_ucontext *context, + struct ib_udata *udata); + +int ipath_destroy_cq(struct ib_cq *ibcq); + +int ipath_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags); + +int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata); + +struct ib_mr *ipath_get_dma_mr(struct ib_pd *pd, int acc); + +struct ib_mr *ipath_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 *ipath_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, + u64 virt_addr, int mr_access_flags, + struct ib_udata *udata); + +int ipath_dereg_mr(struct ib_mr *ibmr); + +struct ib_fmr *ipath_alloc_fmr(struct ib_pd *pd, int mr_access_flags, + struct ib_fmr_attr *fmr_attr); + +int ipath_map_phys_fmr(struct ib_fmr *ibfmr, u64 * page_list, + int list_len, u64 iova); + +int ipath_unmap_fmr(struct list_head *fmr_list); + +int ipath_dealloc_fmr(struct ib_fmr *ibfmr); + +void ipath_release_mmap_info(struct kref *ref); + +struct ipath_mmap_info *ipath_create_mmap_info(struct ipath_ibdev *dev, + u32 size, + struct ib_ucontext *context, + void *obj); + +void ipath_update_mmap_info(struct ipath_ibdev *dev, + struct ipath_mmap_info *ip, + u32 size, void *obj); + +int ipath_mmap(struct ib_ucontext *context, struct vm_area_struct *vma); + +void ipath_insert_rnr_queue(struct ipath_qp *qp); + +int ipath_init_sge(struct ipath_qp *qp, struct ipath_rwqe *wqe, + u32 *lengthp, struct ipath_sge_state *ss); + +int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only); + +u32 ipath_make_grh(struct ipath_ibdev *dev, struct ib_grh *hdr, + struct ib_global_route *grh, u32 hwords, u32 nwords); + +void ipath_make_ruc_header(struct ipath_ibdev *dev, struct ipath_qp *qp, + struct ipath_other_headers *ohdr, + u32 bth0, u32 bth2); + +void ipath_do_send(unsigned long data); + +void ipath_send_complete(struct ipath_qp *qp, struct ipath_swqe *wqe, + enum ib_wc_status status); + +int ipath_make_rc_req(struct ipath_qp *qp); + +int ipath_make_uc_req(struct ipath_qp *qp); + +int ipath_make_ud_req(struct ipath_qp *qp); + +int ipath_register_ib_device(struct ipath_devdata *); + +void ipath_unregister_ib_device(struct ipath_ibdev *); + +void ipath_ib_rcv(struct ipath_ibdev *, void *, void *, u32); + +int ipath_ib_piobufavail(struct ipath_ibdev *); + +unsigned ipath_get_npkeys(struct ipath_devdata *); + +u32 ipath_get_cr_errpkey(struct ipath_devdata *); + +unsigned ipath_get_pkey(struct ipath_devdata *, unsigned); + +extern const enum ib_wc_opcode ib_ipath_wc_opcode[]; + +/* + * Below converts HCA-specific LinkTrainingState to IB PhysPortState + * values. + */ +extern const u8 ipath_cvt_physportstate[]; +#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 + +extern const int ib_ipath_state_ops[]; + +extern unsigned int ib_ipath_lkey_table_size; + +extern unsigned int ib_ipath_max_cqes; + +extern unsigned int ib_ipath_max_cqs; + +extern unsigned int ib_ipath_max_qp_wrs; + +extern unsigned int ib_ipath_max_qps; + +extern unsigned int ib_ipath_max_sges; + +extern unsigned int ib_ipath_max_mcast_grps; + +extern unsigned int ib_ipath_max_mcast_qp_attached; + +extern unsigned int ib_ipath_max_srqs; + +extern unsigned int ib_ipath_max_srq_sges; + +extern unsigned int ib_ipath_max_srq_wrs; + +extern const u32 ib_ipath_rnr_table[]; + +extern struct ib_dma_mapping_ops ipath_dma_mapping_ops; + +#endif /* IPATH_VERBS_H */ |
