126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/*-
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* Copyright (C) 2012 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "nvme_private.h"
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int
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nvme_ns_cmd_read(struct nvme_namespace *ns, void *payload, uint64_t lba,
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uint32_t lba_count, nvme_cb_fn_t cb_fn, void *cb_arg)
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{
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struct nvme_request *req;
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struct nvme_command *cmd;
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req = nvme_allocate_request(payload, lba_count*512, cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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cmd = &req->cmd;
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cmd->opc = NVME_OPC_READ;
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cmd->nsid = ns->id;
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/* TODO: create a read command data structure */
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*(uint64_t *)&cmd->cdw10 = lba;
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cmd->cdw12 = lba_count-1;
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nvme_ctrlr_submit_io_request(ns->ctrlr, req);
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return (0);
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}
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int
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nvme_ns_cmd_write(struct nvme_namespace *ns, void *payload, uint64_t lba,
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uint32_t lba_count, nvme_cb_fn_t cb_fn, void *cb_arg)
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{
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struct nvme_request *req;
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struct nvme_command *cmd;
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req = nvme_allocate_request(payload, lba_count*512, cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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cmd = &req->cmd;
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cmd->opc = NVME_OPC_WRITE;
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cmd->nsid = ns->id;
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/* TODO: create a write command data structure */
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*(uint64_t *)&cmd->cdw10 = lba;
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cmd->cdw12 = lba_count-1;
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nvme_ctrlr_submit_io_request(ns->ctrlr, req);
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return (0);
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}
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int
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nvme_ns_cmd_deallocate(struct nvme_namespace *ns, void *payload,
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uint8_t num_ranges, nvme_cb_fn_t cb_fn, void *cb_arg)
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{
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struct nvme_request *req;
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struct nvme_command *cmd;
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req = nvme_allocate_request(payload,
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num_ranges * sizeof(struct nvme_dsm_range), cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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cmd = &req->cmd;
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cmd->opc = NVME_OPC_DATASET_MANAGEMENT;
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cmd->nsid = ns->id;
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/* TODO: create a delete command data structure */
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cmd->cdw10 = num_ranges - 1;
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cmd->cdw11 = NVME_DSM_ATTR_DEALLOCATE;
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nvme_ctrlr_submit_io_request(ns->ctrlr, req);
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return (0);
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}
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int
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nvme_ns_cmd_flush(struct nvme_namespace *ns, nvme_cb_fn_t cb_fn, void *cb_arg)
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{
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struct nvme_request *req;
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struct nvme_command *cmd;
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req = nvme_allocate_request(NULL, 0, cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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cmd = &req->cmd;
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cmd->opc = NVME_OPC_FLUSH;
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cmd->nsid = ns->id;
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nvme_ctrlr_submit_io_request(ns->ctrlr, req);
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return (0);
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}
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