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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include <sys/ib/ibtl/impl/ibtl.h>
/*
* ibtl_cq.c
* These routines implement (most of) the verbs related to
* Completion Queues.
*/
/*
* Globals
*/
static char ibtf_cq[] = "ibtl_cq";
/*
* This file contains code for the TI CQ calls
*/
/*
* ibt_alloc_cq_sched() - Reserve CQ scheduling class resources
*
* chan - IBT Channel Handle.
* load - Expected CQ load in class, 0 = unspecified
* sched_hdl_p - Returned scheduling handle.
*/
ibt_status_t
ibt_alloc_cq_sched(ibt_hca_hdl_t hca_hdl, ibt_cq_sched_attr_t *attr,
ibt_sched_hdl_t *sched_hdl_p)
{
IBTF_DPRINTF_L3(ibtf_cq, "ibt_alloc_cq_sched(%p, %p, %p)",
hca_hdl, attr, sched_hdl_p);
return (IBTL_HCA2CIHCAOPS_P(hca_hdl)->ibc_alloc_cq_sched(
IBTL_HCA2CIHCA(hca_hdl), attr, sched_hdl_p));
}
/*
* ibt_free_cq_sched() - Free CQ scheduling class resources
*
* chan - IBT Channel Handle.
* sched_hdl - Scheduling handle returned from ibt_alloc_cq_sched.
* load - CQ load being removed.
*/
ibt_status_t
ibt_free_cq_sched(ibt_hca_hdl_t hca_hdl, ibt_sched_hdl_t sched_hdl)
{
IBTF_DPRINTF_L3(ibtf_cq, "ibt_free_cq_sched(%p, %p)",
hca_hdl, sched_hdl);
return (IBTL_HCA2CIHCAOPS_P(hca_hdl)->ibc_free_cq_sched(
IBTL_HCA2CIHCA(hca_hdl), sched_hdl));
}
/*
*
* ibt_alloc_cq() - Allocate a completion queue
*/
ibt_status_t
ibt_alloc_cq(ibt_hca_hdl_t hca_hdl, ibt_cq_attr_t *cq_attr,
ibt_cq_hdl_t *ibt_cq_p, uint32_t *real_size)
{
ibt_status_t status;
ibt_cq_hdl_t ibt_cq;
IBTF_DPRINTF_L3(ibtf_cq, "ibt_alloc_cq(%p, %p)",
hca_hdl, cq_attr);
ibt_cq = kmem_zalloc(sizeof (struct ibtl_cq_s), KM_SLEEP);
*ibt_cq_p = ibt_cq;
_NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibt_cq->cq_in_thread))
_NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibt_cq->cq_ibc_cq_hdl))
_NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibt_cq->cq_hca))
/*
* Set the following values before creating CI CQ, to avoid race
* conditions on async callback.
*/
ibt_cq->cq_hca = hca_hdl;
ibtl_qp_flow_control_enter();
status = IBTL_HCA2CIHCAOPS_P(hca_hdl)->ibc_alloc_cq(
IBTL_HCA2CIHCA(hca_hdl), ibt_cq, cq_attr, &ibt_cq->cq_ibc_cq_hdl,
real_size);
ibtl_qp_flow_control_exit();
if (status != IBT_SUCCESS) {
IBTF_DPRINTF_L2(ibtf_cq, "ibt_alloc_cq: "
"CI CQ handle allocation failed: status = %d", status);
kmem_free(ibt_cq, sizeof (struct ibtl_cq_s));
*ibt_cq_p = NULL;
return (status);
}
if (cq_attr->cq_flags & IBT_CQ_HANDLER_IN_THREAD) {
ibt_cq->cq_in_thread = 1;
/* We may want additional CQ threads now. */
ibtl_another_cq_handler_in_thread();
}
_NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibt_cq->cq_in_thread))
_NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibt_cq->cq_ibc_cq_hdl))
_NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibt_cq->cq_hca))
mutex_init(&ibt_cq->cq_mutex, NULL, MUTEX_DEFAULT, NULL);
/* Update the cq resource count */
atomic_inc_32(&hca_hdl->ha_cq_cnt);
return (IBT_SUCCESS);
}
/*
* ibt_free_cq() - Free a completion queue
*
*/
ibt_status_t
ibt_free_cq(ibt_cq_hdl_t ibt_cq)
{
ibt_status_t status;
ibtl_hca_t *ibt_hca = ibt_cq->cq_hca;
IBTF_DPRINTF_L3(ibtf_cq, "ibt_free_cq(%p)", ibt_cq);
ibtl_free_cq_check(ibt_cq);
status = ((IBTL_CQ2CIHCAOPS_P(ibt_cq))->ibc_free_cq)
(IBTL_CQ2CIHCA(ibt_cq), ibt_cq->cq_ibc_cq_hdl);
if (status != IBT_SUCCESS) {
IBTF_DPRINTF_L2(ibtf_cq, "ibt_free_cq: "
"CI CQ handle de-allocation failed: status = %d", status);
return (status);
}
/* mutex_destroy(&ibt_cq->cq_mutex); */
ibtl_free_cq_async_check(ibt_cq);
/* Update the cq resource count */
atomic_dec_32(&ibt_hca->ha_cq_cnt);
return (status);
}
/*
* ibt_query_cq() - Returns the size of the cq
*/
ibt_status_t
ibt_query_cq(ibt_cq_hdl_t ibt_cq, uint32_t *entries_p, uint_t *count_p,
uint_t *usec_p, ibt_cq_handler_id_t *hid_p)
{
IBTF_DPRINTF_L3(ibtf_cq, "ibt_query_cq(%p)", ibt_cq);
return (IBTL_CQ2CIHCAOPS_P(ibt_cq)->ibc_query_cq(IBTL_CQ2CIHCA(ibt_cq),
ibt_cq->cq_ibc_cq_hdl, entries_p, count_p, usec_p, hid_p));
}
/*
* ibt_resize_cq() - Change the size of a cq.
*/
ibt_status_t
ibt_resize_cq(ibt_cq_hdl_t ibt_cq, uint32_t new_sz, uint32_t *real_sz)
{
IBTF_DPRINTF_L3(ibtf_cq, "ibt_resize_cq(%p, %d)", ibt_cq, new_sz);
return (IBTL_CQ2CIHCAOPS_P(ibt_cq)->ibc_resize_cq(IBTL_CQ2CIHCA(ibt_cq),
ibt_cq->cq_ibc_cq_hdl, new_sz, real_sz));
}
ibt_status_t
ibt_modify_cq(ibt_cq_hdl_t ibt_cq, uint_t count, uint_t usec,
ibt_cq_handler_id_t hid)
{
IBTF_DPRINTF_L3(ibtf_cq, "ibt_modify_cq(%p, %d, %d, %d)", ibt_cq, count,
usec, hid);
return (IBTL_CQ2CIHCAOPS_P(ibt_cq)->ibc_modify_cq(IBTL_CQ2CIHCA(ibt_cq),
ibt_cq->cq_ibc_cq_hdl, count, usec, hid));
}
/*
* ibt_poll_cq()
* Poll the specified CQ for a work request (WR) completion. If a CQ
* contains a completed WR, the completed WR at the head of the CQ is
* returned.
*
* ibt_cq The CQ handle.
*
* work_completions An array of work completions.
*
* num_wc Size of the Work completion array. The
* requested number of completions.
*
* num_polled The actual number of completions returned.
*
*/
ibt_status_t
ibt_poll_cq(ibt_cq_hdl_t ibt_cq, ibt_wc_t *work_completions, uint_t num_wc,
uint_t *num_polled)
{
IBTF_DPRINTF_L4(ibtf_cq, "ibt_poll_cq(%p)", ibt_cq);
return (IBTL_CQ2CIHCAOPS_P(ibt_cq)->ibc_poll_cq(IBTL_CQ2CIHCA(ibt_cq),
ibt_cq->cq_ibc_cq_hdl, work_completions, num_wc, num_polled));
}
_NOTE(SCHEME_PROTECTS_DATA("client managed", ibtl_cq_s::cq_clnt_private))
/*
* ibt_set_cq_private - Sets the private data on a given CQ
*
* ibt_cq The ibt_cq_hdl_t of the allocated CQ.
* clnt_private The client private data.
*/
void
ibt_set_cq_private(ibt_cq_hdl_t ibt_cq, void *clnt_private)
{
ibt_cq->cq_clnt_private = clnt_private;
}
/*
* ibt_get_cq_private - Retrieves the private data for a given CQ
*
* ibt_cq The ibt_cq_hdl_t of the allocated CQ.
*/
void *
ibt_get_cq_private(ibt_cq_hdl_t ibt_cq)
{
return (ibt_cq->cq_clnt_private);
}
/*
* ibt_query_cq_handler_id - Retrieves the attributes of a cq_handler_id.
*/
ibt_status_t
ibt_query_cq_handler_id(ibt_hca_hdl_t hca_hdl,
ibt_cq_handler_id_t hid, ibt_cq_handler_attr_t *attrs)
{
IBTF_DPRINTF_L3(ibtf_cq, "ibt_query_cq_handler(%p, %d, %p)",
hca_hdl, hid, attrs);
return (IBTL_HCA2CIHCAOPS_P(hca_hdl)->ibc_query_cq_handler_id(
IBTL_HCA2CIHCA(hca_hdl), hid, attrs));
}
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