/* $OpenBSD: nvmeio.h,v 1.1 2024/05/24 12:04:07 krw Exp $       */
/*
 * Copyright (c) 2023 Kenneth R Westerback <krw@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#define NVME_PASSTHROUGH_CMD    _IOWR('n', 0, struct nvme_pt_cmd)

struct nvme_pt_status {
        int                     ps_dv_unit;
        int                     ps_nsid;
        int                     ps_flags;
        uint32_t                ps_csts;
        uint32_t                ps_cc;
};

struct nvme_pt_cmd {
        /* Commands may arrive via /dev/bio. */
        struct bio              pt_bio;

        /* The sqe fields that the caller may specify. */
        uint8_t                 pt_opcode;
        uint32_t                pt_nsid;
        uint32_t                pt_cdw10;
        uint32_t                pt_cdw11;
        uint32_t                pt_cdw12;
        uint32_t                pt_cdw13;
        uint32_t                pt_cdw14;
        uint32_t                pt_cdw15;

        caddr_t                 pt_status;
        uint32_t                pt_statuslen;

        caddr_t                 pt_databuf;     /* User space address. */
        uint32_t                pt_databuflen;  /* Length of buffer. */
};