82db40dbd5
A namespace indicates support for reservations by reporting a non-zero value in the Reservation Capabilities field in the Identify Namespace data structure, and controller indicates support for reservation in the Identify Controller data structure, Here we used namespace field as the support flag. Change-Id: I0e1e29548aa3fc8b6d3bbeb4149ec4864316f092 Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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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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*
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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "nvme_internal.h"
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static inline struct nvme_namespace_data *
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_nvme_ns_get_data(struct nvme_namespace *ns)
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{
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return &ns->ctrlr->nsdata[ns->id - 1];
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}
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uint32_t
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nvme_ns_get_id(struct nvme_namespace *ns)
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{
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return ns->id;
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}
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uint32_t
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nvme_ns_get_max_io_xfer_size(struct nvme_namespace *ns)
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{
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return ns->ctrlr->max_xfer_size;
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}
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uint32_t
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nvme_ns_get_sector_size(struct nvme_namespace *ns)
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{
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return ns->sector_size;
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}
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uint64_t
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nvme_ns_get_num_sectors(struct nvme_namespace *ns)
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{
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return _nvme_ns_get_data(ns)->nsze;
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}
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uint64_t
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nvme_ns_get_size(struct nvme_namespace *ns)
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{
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return nvme_ns_get_num_sectors(ns) * nvme_ns_get_sector_size(ns);
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}
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uint32_t
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nvme_ns_get_flags(struct nvme_namespace *ns)
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{
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return ns->flags;
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}
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const struct nvme_namespace_data *
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nvme_ns_get_data(struct nvme_namespace *ns)
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{
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return _nvme_ns_get_data(ns);
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}
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int
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nvme_ns_construct(struct nvme_namespace *ns, uint16_t id,
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struct nvme_controller *ctrlr)
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{
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struct nvme_completion_poll_status status;
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struct nvme_namespace_data *nsdata;
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uint32_t pci_devid;
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nvme_assert(id > 0, ("invalid namespace id %d", id));
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ns->ctrlr = ctrlr;
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ns->id = id;
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ns->stripe_size = 0;
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nvme_pcicfg_read32(ctrlr->devhandle, &pci_devid, 0);
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if (pci_devid == INTEL_DC_P3X00_DEVID && ctrlr->cdata.vs[3] != 0) {
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ns->stripe_size = (1 << ctrlr->cdata.vs[3]) * ctrlr->min_page_size;
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}
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nsdata = _nvme_ns_get_data(ns);
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status.done = false;
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nvme_ctrlr_cmd_identify_namespace(ctrlr, id, nsdata,
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nvme_completion_poll_cb, &status);
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while (status.done == false) {
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nvme_qpair_process_completions(&ctrlr->adminq, 0);
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}
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if (nvme_completion_is_error(&status.cpl)) {
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nvme_printf(ctrlr, "nvme_identify_namespace failed\n");
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return ENXIO;
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}
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ns->sector_size = 1 << nsdata->lbaf[nsdata->flbas.format].lbads;
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ns->sectors_per_max_io = nvme_ns_get_max_io_xfer_size(ns) / ns->sector_size;
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ns->sectors_per_stripe = ns->stripe_size / ns->sector_size;
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if (ctrlr->cdata.oncs.dsm) {
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ns->flags |= NVME_NS_DEALLOCATE_SUPPORTED;
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}
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if (ctrlr->cdata.vwc.present) {
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ns->flags |= NVME_NS_FLUSH_SUPPORTED;
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}
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if (nsdata->nsrescap.raw) {
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ns->flags |= NVME_NS_RESERVATION_SUPPORTED;
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}
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return 0;
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}
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void nvme_ns_destruct(struct nvme_namespace *ns)
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{
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}
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