718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
199 lines
5.0 KiB
C
199 lines
5.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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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req = nvme_allocate_request_vaddr(payload,
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lba_count*nvme_ns_get_sector_size(ns), cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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nvme_ns_read_cmd(&req->cmd, ns->id, lba, lba_count);
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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_read_bio(struct nvme_namespace *ns, struct bio *bp,
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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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uint64_t lba;
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uint64_t lba_count;
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req = nvme_allocate_request_bio(bp, cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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lba = bp->bio_offset / nvme_ns_get_sector_size(ns);
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lba_count = bp->bio_bcount / nvme_ns_get_sector_size(ns);
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nvme_ns_read_cmd(&req->cmd, ns->id, lba, lba_count);
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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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req = nvme_allocate_request_vaddr(payload,
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lba_count*nvme_ns_get_sector_size(ns), cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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nvme_ns_write_cmd(&req->cmd, ns->id, lba, lba_count);
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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_bio(struct nvme_namespace *ns, struct bio *bp,
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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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uint64_t lba;
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uint64_t lba_count;
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req = nvme_allocate_request_bio(bp, cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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lba = bp->bio_offset / nvme_ns_get_sector_size(ns);
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lba_count = bp->bio_bcount / nvme_ns_get_sector_size(ns);
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nvme_ns_write_cmd(&req->cmd, ns->id, lba, lba_count);
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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_vaddr(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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req = nvme_allocate_request_null(cb_fn, cb_arg);
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if (req == NULL)
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return (ENOMEM);
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nvme_ns_flush_cmd(&req->cmd, 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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/* Timeout = 1 sec */
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#define NVD_DUMP_TIMEOUT 200000
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int
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nvme_ns_dump(struct nvme_namespace *ns, void *virt, off_t offset, size_t len)
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{
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struct nvme_completion_poll_status status;
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struct nvme_request *req;
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struct nvme_command *cmd;
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uint64_t lba, lba_count;
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int i;
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status.done = FALSE;
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req = nvme_allocate_request_vaddr(virt, len, nvme_completion_poll_cb,
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&status);
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if (req == NULL)
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return (ENOMEM);
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cmd = &req->cmd;
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if (len > 0) {
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lba = offset / nvme_ns_get_sector_size(ns);
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lba_count = len / nvme_ns_get_sector_size(ns);
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nvme_ns_write_cmd(cmd, ns->id, lba, lba_count);
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} else
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nvme_ns_flush_cmd(cmd, ns->id);
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nvme_ctrlr_submit_io_request(ns->ctrlr, req);
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if (req->qpair == NULL)
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return (ENXIO);
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i = 0;
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while ((i++ < NVD_DUMP_TIMEOUT) && (status.done == FALSE)) {
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DELAY(5);
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nvme_qpair_process_completions(req->qpair);
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}
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if (status.done == FALSE)
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return (ETIMEDOUT);
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return (0);
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}
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