/*
 * 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 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _DAPL_TAVOR_WR_H
#define _DAPL_TAVOR_WR_H

/*
 * dapl_tavor_wr.h
 *      Contains the definition of all structures that are used for
 *      doing the work request handling.
 */

#ifdef __cplusplus
extern "C" {
#endif

#include "dapl_osd.h"
#include "dapl_hash.h"
#include "dapl_tavor_ibtf.h"
#include "dapl_tavor_hw.h"

typedef struct dapls_tavor_workq_hdr_s          dapls_tavor_workq_hdr_t;
typedef struct dapls_tavor_wrid_list_hdr_s      dapls_tavor_wrid_list_hdr_t;
typedef struct dapls_tavor_wrid_entry_s         dapls_tavor_wrid_entry_t;
typedef struct dapls_tavor_wrid_lock_s          dapls_tavor_wrid_lock_t;

/*
 * Defines the lock that protects the wrid list.
 * For send queues and receive queues this is allocated with the workq header
 * structure. For SRQs it is allocated with the wrid_list_hdr and the receive
 * workq header points to it.
 */
struct dapls_tavor_wrid_lock_s {
        uint32_t        wrl_on_srq; /* lock resides in the srq wridlist */
        DAPL_OS_LOCK    wrl_lock;
};

/*
 * Defines the workq header for each queue in the QP. This points to the
 * dapls_tavor_wrid_list_hdr_t which has the work request id list.
 */
struct dapls_tavor_workq_hdr_s {
        uint32_t                        wq_qpn;
        uint32_t                        wq_send_or_recv;
        dapls_tavor_wrid_lock_t         *wq_wrid_lock;
        uint32_t                        wq_size;
        uint32_t                        wq_head;
        uint32_t                        wq_tail;
        uint32_t                        wq_full;
        dapls_tavor_wrid_list_hdr_t     *wq_wrid_poll;
        dapls_tavor_wrid_list_hdr_t     *wq_wrid_post;
};
/* Type of the work queue */
#define TAVOR_WR_SEND                   0x1
#define TAVOR_WR_RECV                   0x0


/*
 * Defines each work request id entry
 */
struct dapls_tavor_wrid_entry_s {
        uint64_t                wr_wrid;
        uint32_t                wr_wqeaddrsz;
        uint32_t                wr_signaled_dbd;
};
#define TAVOR_WRID_ENTRY_SIGNALED       (1 << 0)
#define TAVOR_WRID_ENTRY_DOORBELLED     (1 << 1)

/*
 * Defines each work request id list which has an array of wrid entries
 */
struct dapls_tavor_wrid_list_hdr_s {
        dapls_tavor_wrid_list_hdr_t     *wl_next;
        dapls_tavor_wrid_list_hdr_t     *wl_prev;
        dapls_tavor_wrid_list_hdr_t     *wl_reap_next;
        dapls_tavor_workq_hdr_t         *wl_wqhdr;
        dapls_tavor_wrid_entry_t        *wl_wre;
        dapls_tavor_wrid_entry_t        *wl_wre_old_tail;
        uint32_t                        wl_size;
        uint32_t                        wl_full;
        uint32_t                        wl_head;
        uint32_t                        wl_tail;
        dapls_tavor_wrid_lock_t         *wl_lock; /* valid only for SRQs */

        /* For SRQ */
        uint_t                          wl_srq_en;
        uint32_t                        *wl_free_list; /* free descrptr list */
        uint32_t                        wl_freel_head;
        uint32_t                        wl_freel_tail;
        uint32_t                        wl_freel_entries; /* # free entries */
        uint32_t                        wl_srq_wqesz;
        uint64_t                        wl_srq_desc_addr;
};

extern dapls_tavor_wrid_entry_t *dapli_tavor_wrid_find_match_srq(
        dapls_tavor_wrid_list_hdr_t *, tavor_hw_cqe_t *);

#ifdef __cplusplus
}
#endif

#endif  /* _DAPL_TAVOR_WR_H */