diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/infiniband/hw/ehca/ehca_main.c | 4 | ||||
-rw-r--r-- | drivers/infiniband/hw/ehca/ehca_qp.c | 22 | ||||
-rw-r--r-- | drivers/infiniband/hw/ehca/ipz_pt_fn.c | 13 | ||||
-rw-r--r-- | drivers/infiniband/hw/ehca/ipz_pt_fn.h | 15 |
4 files changed, 39 insertions, 15 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c index 01f5aa9cb56..3d1c1c53503 100644 --- a/drivers/infiniband/hw/ehca/ehca_main.c +++ b/drivers/infiniband/hw/ehca/ehca_main.c @@ -52,7 +52,7 @@ MODULE_LICENSE("Dual BSD/GPL"); MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver"); -MODULE_VERSION("SVNEHCA_0018"); +MODULE_VERSION("SVNEHCA_0019"); int ehca_open_aqp1 = 0; int ehca_debug_level = 0; @@ -790,7 +790,7 @@ int __init ehca_module_init(void) int ret; printk(KERN_INFO "eHCA Infiniband Device Driver " - "(Rel.: SVNEHCA_0018)\n"); + "(Rel.: SVNEHCA_0019)\n"); idr_init(&ehca_qp_idr); idr_init(&ehca_cq_idr); spin_lock_init(&ehca_qp_idr_lock); diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c index cf3e50ee2d0..8682aa50c70 100644 --- a/drivers/infiniband/hw/ehca/ehca_qp.c +++ b/drivers/infiniband/hw/ehca/ehca_qp.c @@ -732,8 +732,7 @@ static int prepare_sqe_rts(struct ehca_qp *my_qp, struct ehca_shca *shca, u64 h_ret; struct ipz_queue *squeue; void *bad_send_wqe_p, *bad_send_wqe_v; - void *squeue_start_p, *squeue_end_p; - void *squeue_start_v, *squeue_end_v; + u64 q_ofs; struct ehca_wqe *wqe; int qp_num = my_qp->ib_qp.qp_num; @@ -755,26 +754,23 @@ static int prepare_sqe_rts(struct ehca_qp *my_qp, struct ehca_shca *shca, if (ehca_debug_level) ehca_dmp(bad_send_wqe_v, 32, "qp_num=%x bad_wqe", qp_num); squeue = &my_qp->ipz_squeue; - squeue_start_p = (void*)virt_to_abs(ipz_qeit_calc(squeue, 0L)); - squeue_end_p = squeue_start_p+squeue->queue_length; - squeue_start_v = abs_to_virt((u64)squeue_start_p); - squeue_end_v = abs_to_virt((u64)squeue_end_p); - ehca_dbg(&shca->ib_device, "qp_num=%x squeue_start_v=%p squeue_end_v=%p", - qp_num, squeue_start_v, squeue_end_v); + if (ipz_queue_abs_to_offset(squeue, (u64)bad_send_wqe_p, &q_ofs)) { + ehca_err(&shca->ib_device, "failed to get wqe offset qp_num=%x" + " bad_send_wqe_p=%p", qp_num, bad_send_wqe_p); + return -EFAULT; + } /* loop sets wqe's purge bit */ - wqe = (struct ehca_wqe*)bad_send_wqe_v; + wqe = (struct ehca_wqe*)ipz_qeit_calc(squeue, q_ofs); *bad_wqe_cnt = 0; while (wqe->optype != 0xff && wqe->wqef != 0xff) { if (ehca_debug_level) ehca_dmp(wqe, 32, "qp_num=%x wqe", qp_num); wqe->nr_of_data_seg = 0; /* suppress data access */ wqe->wqef = WQEF_PURGE; /* WQE to be purged */ - wqe = (struct ehca_wqe*)((u8*)wqe+squeue->qe_size); + q_ofs = ipz_queue_advance_offset(squeue, q_ofs); + wqe = (struct ehca_wqe*)ipz_qeit_calc(squeue, q_ofs); *bad_wqe_cnt = (*bad_wqe_cnt)+1; - if ((void*)wqe >= squeue_end_v) { - wqe = squeue_start_v; - } } /* * bad wqe will be reprocessed and ignored when pol_cq() is called, diff --git a/drivers/infiniband/hw/ehca/ipz_pt_fn.c b/drivers/infiniband/hw/ehca/ipz_pt_fn.c index e028ff1588c..bf7a40088f6 100644 --- a/drivers/infiniband/hw/ehca/ipz_pt_fn.c +++ b/drivers/infiniband/hw/ehca/ipz_pt_fn.c @@ -70,6 +70,19 @@ void *ipz_qeit_eq_get_inc(struct ipz_queue *queue) return ret; } +int ipz_queue_abs_to_offset(struct ipz_queue *queue, u64 addr, u64 *q_offset) +{ + int i; + for (i = 0; i < queue->queue_length / queue->pagesize; i++) { + u64 page = (u64)virt_to_abs(queue->queue_pages[i]); + if (addr >= page && addr < page + queue->pagesize) { + *q_offset = addr - page + i * queue->pagesize; + return 0; + } + } + return -EINVAL; +} + int ipz_queue_ctor(struct ipz_queue *queue, const u32 nr_of_pages, const u32 pagesize, const u32 qe_size, const u32 nr_of_sg) diff --git a/drivers/infiniband/hw/ehca/ipz_pt_fn.h b/drivers/infiniband/hw/ehca/ipz_pt_fn.h index 2f13509d525..dc3bda2634b 100644 --- a/drivers/infiniband/hw/ehca/ipz_pt_fn.h +++ b/drivers/infiniband/hw/ehca/ipz_pt_fn.h @@ -150,6 +150,21 @@ static inline void *ipz_qeit_reset(struct ipz_queue *queue) return ipz_qeit_get(queue); } +/* + * return the q_offset corresponding to an absolute address + */ +int ipz_queue_abs_to_offset(struct ipz_queue *queue, u64 addr, u64 *q_offset); + +/* + * return the next queue offset. don't modify the queue. + */ +static inline u64 ipz_queue_advance_offset(struct ipz_queue *queue, u64 offset) +{ + offset += queue->qe_size; + if (offset >= queue->queue_length) offset = 0; + return offset; +} + /* struct generic page table */ struct ipz_pt { u64 entries[EHCA_PT_ENTRIES]; |