diff options
Diffstat (limited to 'drivers/infiniband/hw/nes/nes_utils.c')
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_utils.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/nes/nes_utils.c b/drivers/infiniband/hw/nes/nes_utils.c index fe83d1b2b177..fb8cbd71a2ef 100644 --- a/drivers/infiniband/hw/nes/nes_utils.c +++ b/drivers/infiniband/hw/nes/nes_utils.c @@ -567,12 +567,36 @@ struct nes_cqp_request *nes_get_cqp_request(struct nes_device *nesdev) return cqp_request; } +void nes_free_cqp_request(struct nes_device *nesdev, + struct nes_cqp_request *cqp_request) +{ + unsigned long flags; + + nes_debug(NES_DBG_CQP, "CQP request %p (opcode 0x%02X) freed.\n", + cqp_request, + le32_to_cpu(cqp_request->cqp_wqe.wqe_words[NES_CQP_WQE_OPCODE_IDX]) & 0x3f); + + if (cqp_request->dynamic) { + kfree(cqp_request); + } else { + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } +} + +void nes_put_cqp_request(struct nes_device *nesdev, + struct nes_cqp_request *cqp_request) +{ + if (atomic_dec_and_test(&cqp_request->refcount)) + nes_free_cqp_request(nesdev, cqp_request); +} /** * nes_post_cqp_request */ void nes_post_cqp_request(struct nes_device *nesdev, - struct nes_cqp_request *cqp_request, int ring_doorbell) + struct nes_cqp_request *cqp_request) { struct nes_hw_cqp_wqe *cqp_wqe; unsigned long flags; @@ -600,10 +624,9 @@ void nes_post_cqp_request(struct nes_device *nesdev, nesdev->cqp.sq_head, nesdev->cqp.sq_tail, nesdev->cqp.sq_size, cqp_request->waiting, atomic_read(&cqp_request->refcount)); barrier(); - if (ring_doorbell) { - /* Ring doorbell (1 WQEs) */ - nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x01800000 | nesdev->cqp.qp_id); - } + + /* Ring doorbell (1 WQEs) */ + nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x01800000 | nesdev->cqp.qp_id); barrier(); } else { |