diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_verbs.h')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_verbs.h | 56 |
1 files changed, 41 insertions, 15 deletions
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h index 48760602465..aff8b2c1788 100644 --- a/drivers/infiniband/hw/qib/qib_verbs.h +++ b/drivers/infiniband/hw/qib/qib_verbs.h @@ -1,6 +1,6 @@ /* - * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation. - * All rights reserved. + * Copyright (c) 2012 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 @@ -41,6 +41,7 @@ #include <linux/interrupt.h> #include <linux/kref.h> #include <linux/workqueue.h> +#include <linux/completion.h> #include <rdma/ib_pack.h> #include <rdma/ib_user_verbs.h> @@ -302,6 +303,9 @@ struct qib_mregion { 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 */ }; @@ -416,7 +420,7 @@ struct qib_qp { /* read mostly fields above and below */ struct ib_ah_attr remote_ah_attr; struct ib_ah_attr alt_ah_attr; - struct qib_qp *next; /* link list for QPN hash table */ + 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 */ @@ -646,7 +650,7 @@ struct qib_lkey_table { u32 next; /* next unused index (speeds search) */ u32 gen; /* generation count */ u32 max; /* size of the table */ - struct qib_mregion **table; + struct qib_mregion __rcu **table; }; struct qib_opcode_stats { @@ -655,8 +659,8 @@ struct qib_opcode_stats { }; struct qib_ibport { - struct qib_qp *qp0; - struct qib_qp *qp1; + 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; @@ -723,12 +727,13 @@ struct qib_ibport { struct qib_opcode_stats opstats[128]; }; + 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 *dma_mr; + struct qib_mregion __rcu *dma_mr; /* QP numbers are shared by all IB ports */ struct qib_qpn_table qpn_table; @@ -739,7 +744,7 @@ struct qib_ibdev { struct list_head memwait; /* list for wait kernel memory */ struct list_head txreq_free; struct timer_list mem_timer; - struct qib_qp **qp_table; + 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 */ @@ -832,11 +837,7 @@ extern struct workqueue_struct *qib_cq_wq; /* * This must be called with s_lock held. */ -static inline void qib_schedule_send(struct qib_qp *qp) -{ - if (qib_send_ok(qp)) - queue_work(ib_wq, &qp->s_work); -} +void qib_schedule_send(struct qib_qp *qp); static inline int qib_pkey_ok(u16 pkey1, u16 pkey2) { @@ -933,6 +934,8 @@ void qib_rc_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr, 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); @@ -944,9 +947,9 @@ 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_lkey_table *rkt, struct qib_mregion *mr); +int qib_alloc_lkey(struct qib_mregion *mr, int dma_region); -int qib_free_lkey(struct qib_ibdev *dev, struct qib_mregion *mr); +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); @@ -1014,6 +1017,29 @@ 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, |