numam-spdk/lib/nvme/nvme_ctrlr_ocssd_cmd.c

/*-
 *   BSD LICENSE
 *
 *   Copyright (c) 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:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
 *   OWNER 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,
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 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "spdk/nvme_ocssd.h"
#include "nvme_internal.h"

bool
spdk_nvme_ctrlr_is_ocssd_supported(struct spdk_nvme_ctrlr *ctrlr)
{
	if (ctrlr->quirks & NVME_QUIRK_OCSSD) {
		/* TODO: There isn't a standardized way to identify Open-Channel SSD
		 * different verdors may have different conditions.
		 */

		/*
		 * Current QEMU OpenChannel Device needs to check nsdata->vs[0].
		 * Here check nsdata->vs[0] of the first namespace.
		 */
		if (ctrlr->cdata.vid == SPDK_PCI_VID_CNEXLABS) {
			if (ctrlr->num_ns && ctrlr->nsdata[0].vendor_specific[0] == 0x1) {
				return true;
			}
		}
	}
	return false;
}


int
spdk_nvme_ocssd_ctrlr_cmd_geometry(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
				   void *payload, uint32_t payload_size,
				   spdk_nvme_cmd_cb cb_fn, void *cb_arg)
{
	struct nvme_request *req;
	struct spdk_nvme_cmd *cmd;
	int rc;

	if (!payload || (payload_size != sizeof(struct spdk_ocssd_geometry_data))) {
		return -EINVAL;
	}

	nvme_robust_mutex_lock(&ctrlr->ctrlr_lock);
	req = nvme_allocate_request_user_copy(ctrlr->adminq,
					      payload, payload_size, cb_fn, cb_arg, false);
	if (req == NULL) {
		nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
		return -ENOMEM;
	}

	cmd = &req->cmd;
	cmd->opc = SPDK_OCSSD_OPC_GEOMETRY;
	cmd->nsid = nsid;

	rc = nvme_ctrlr_submit_admin_request(ctrlr, req);

	nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
	return rc;
}