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/*-
* Copyright (C) 2012-2013 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/param.h>
#define NVME_PASSTHROUGH_CMD _IOWR('n', 0, struct nvme_pt_command)
#if __FreeBSD_version < 1100110
struct nvme_command
{
/* dword 0 */
uint16_t opc : 8; /* opcode */
uint16_t fuse : 2; /* fused operation */
uint16_t rsvd1 : 6;
uint16_t cid; /* command identifier */
/* dword 1 */
uint32_t nsid; /* namespace identifier */
/* dword 2-3 */
uint32_t rsvd2;
uint32_t rsvd3;
/* dword 4-5 */
uint64_t mptr; /* metadata pointer */
/* dword 6-7 */
uint64_t prp1; /* prp entry 1 */
/* dword 8-9 */
uint64_t prp2; /* prp entry 2 */
/* dword 10-15 */
uint32_t cdw10; /* command-specific */
uint32_t cdw11; /* command-specific */
uint32_t cdw12; /* command-specific */
uint32_t cdw13; /* command-specific */
uint32_t cdw14; /* command-specific */
uint32_t cdw15; /* command-specific */
} __packed;
struct nvme_status {
uint16_t p : 1; /* phase tag */
uint16_t sc : 8; /* status code */
uint16_t sct : 3; /* status code type */
uint16_t rsvd2 : 2;
uint16_t m : 1; /* more */
uint16_t dnr : 1; /* do not retry */
} __packed;
struct nvme_completion {
/* dword 0 */
uint32_t cdw0; /* command-specific */
/* dword 1 */
uint32_t rsvd1;
/* dword 2 */
uint16_t sqhd; /* submission queue head pointer */
uint16_t sqid; /* submission queue identifier */
/* dword 3 */
uint16_t cid; /* command identifier */
struct nvme_status status;
} __packed;
struct nvme_pt_command {
/*
* cmd is used to specify a passthrough command to a controller or
* namespace.
*
* The following fields from cmd may be specified by the caller:
* * opc (opcode)
* * nsid (namespace id) - for admin commands only
* * cdw10-cdw15
*
* Remaining fields must be set to 0 by the caller.
*/
struct nvme_command cmd;
/*
* cpl returns completion status for the passthrough command
* specified by cmd.
*
* The following fields will be filled out by the driver, for
* consumption by the caller:
* * cdw0
* * status (except for phase)
*
* Remaining fields will be set to 0 by the driver.
*/
struct nvme_completion cpl;
/* buf is the data buffer associated with this passthrough command. */
void * buf;
/*
* len is the length of the data buffer associated with this
* passthrough command.
*/
uint32_t len;
/*
* is_read = 1 if the passthrough command will read data into the
* supplied buffer from the controller.
*
* is_read = 0 if the passthrough command will write data from the
* supplied buffer to the controller.
*/
uint32_t is_read;
/*
* driver_lock is used by the driver only. It must be set to 0
* by the caller.
*/
struct mtx * driver_lock;
};
#else
#include <dev/nvme/nvme.h>
#endif
#define nvme_completion_is_error(cpl) \
((cpl)->status.sc != 0 || (cpl)->status.sct != 0)
#define NVME_CTRLR_PREFIX "/dev/nvme"
#define NVME_NS_PREFIX "ns"
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