0dd80395f3
This allows users to swap their PCI library from libpciaccess/dpdk to another mechanism using the standard method for swapping out the env library. Change-Id: Ib2248f8b43754a540de2ec01897e571f0302b667 Signed-off-by: Ben Walker <benjamin.walker@intel.com>
977 lines
39 KiB
C
977 lines
39 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) 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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*
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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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/** \file
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* NVMe driver public API
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*/
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#ifndef SPDK_NVME_H
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#define SPDK_NVME_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "spdk/env.h"
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#include "nvme_spec.h"
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#define SPDK_NVME_DEFAULT_RETRY_COUNT (4)
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extern int32_t spdk_nvme_retry_count;
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/** \brief Opaque handle to a controller. Returned by \ref spdk_nvme_probe()'s attach_cb. */
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struct spdk_nvme_ctrlr;
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/**
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* \brief NVMe controller initialization options.
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*
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* A pointer to this structure will be provided for each probe callback from spdk_nvme_probe() to
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* allow the user to request non-default options, and the actual options enabled on the controller
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* will be provided during the attach callback.
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*/
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struct spdk_nvme_ctrlr_opts {
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/**
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* Number of I/O queues to request (used to set Number of Queues feature)
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*/
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uint32_t num_io_queues;
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/**
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* Enable submission queue in controller memory buffer
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*/
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bool use_cmb_sqs;
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/**
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* Type of arbitration mechanism
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*/
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enum spdk_nvme_cc_ams arb_mechanism;
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};
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/**
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* Callback for spdk_nvme_probe() enumeration.
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*
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* \param opts NVMe controller initialization options. This structure will be populated with the
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* default values on entry, and the user callback may update any options to request a different
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* value. The controller may not support all requested parameters, so the final values will be
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* provided during the attach callback.
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* \return true to attach to this device.
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*/
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typedef bool (*spdk_nvme_probe_cb)(void *cb_ctx, struct spdk_pci_device *pci_dev,
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struct spdk_nvme_ctrlr_opts *opts);
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/**
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* Callback for spdk_nvme_probe() to report a device that has been attached to the userspace NVMe driver.
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*
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* \param opts NVMe controller initialization options that were actually used. Options may differ
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* from the requested options from the probe call depending on what the controller supports.
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*/
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typedef void (*spdk_nvme_attach_cb)(void *cb_ctx, struct spdk_pci_device *pci_dev,
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struct spdk_nvme_ctrlr *ctrlr,
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const struct spdk_nvme_ctrlr_opts *opts);
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/**
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* Callback for spdk_nvme_probe() to report that a device attached to the userspace NVMe driver
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* has been removed from the system.
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*
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* \param ctrlr NVMe controller instance that was removed.
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*/
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typedef void (*spdk_nvme_remove_cb)(void *cb_ctx, struct spdk_nvme_ctrlr *ctrlr);
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/**
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* \brief Enumerate the NVMe devices attached to the system and attach the userspace NVMe driver
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* to them if desired.
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*
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* \param cb_ctx Opaque value which will be passed back in cb_ctx parameter of the callbacks.
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* \param probe_cb will be called once per NVMe device found in the system.
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* \param attach_cb will be called for devices for which probe_cb returned true once that NVMe
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* controller has been attached to the userspace driver.
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* \param remove_cb will be called for devices that were attached in a previous spdk_nvme_probe()
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* call but are no longer attached to the system. Optional; specify NULL if removal notices are not
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* desired.
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*
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* If called more than once, only devices that are not already attached to the SPDK NVMe driver
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* will be reported.
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*
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* To stop using the the controller and release its associated resources,
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* call \ref spdk_nvme_detach with the spdk_nvme_ctrlr instance returned by this function.
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*/
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int spdk_nvme_probe(void *cb_ctx,
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spdk_nvme_probe_cb probe_cb,
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spdk_nvme_attach_cb attach_cb,
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spdk_nvme_remove_cb remove_cb);
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/**
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* \brief Detaches specified device returned by \ref spdk_nvme_probe()'s attach_cb from the NVMe driver.
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*
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* On success, the spdk_nvme_ctrlr handle is no longer valid.
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*
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* This function should be called from a single thread while no other threads
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* are actively using the NVMe device.
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*
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*/
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int spdk_nvme_detach(struct spdk_nvme_ctrlr *ctrlr);
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/**
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* \brief Perform a full hardware reset of the NVMe controller.
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*
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* This function should be called from a single thread while no other threads
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* are actively using the NVMe device.
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*
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* Any pointers returned from spdk_nvme_ctrlr_get_ns() and spdk_nvme_ns_get_data() may be invalidated
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* by calling this function. The number of namespaces as returned by spdk_nvme_ctrlr_get_num_ns() may
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* also change.
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*/
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int spdk_nvme_ctrlr_reset(struct spdk_nvme_ctrlr *ctrlr);
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/**
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* \brief Get the identify controller data as defined by the NVMe specification.
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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*/
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const struct spdk_nvme_ctrlr_data *spdk_nvme_ctrlr_get_data(struct spdk_nvme_ctrlr *ctrlr);
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/**
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* \brief Get the NVMe controller CAP (Capabilities) register.
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*/
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union spdk_nvme_cap_register spdk_nvme_ctrlr_get_regs_cap(struct spdk_nvme_ctrlr *ctrlr);
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/**
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* \brief Get the NVMe controller VS (Version) register.
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*/
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union spdk_nvme_vs_register spdk_nvme_ctrlr_get_regs_vs(struct spdk_nvme_ctrlr *ctrlr);
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/**
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* \brief Get the number of namespaces for the given NVMe controller.
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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* This is equivalent to calling spdk_nvme_ctrlr_get_data() to get the
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* spdk_nvme_ctrlr_data and then reading the nn field.
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*
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*/
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uint32_t spdk_nvme_ctrlr_get_num_ns(struct spdk_nvme_ctrlr *ctrlr);
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/**
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* \brief Determine if a particular log page is supported by the given NVMe controller.
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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* \sa spdk_nvme_ctrlr_cmd_get_log_page()
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*/
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bool spdk_nvme_ctrlr_is_log_page_supported(struct spdk_nvme_ctrlr *ctrlr, uint8_t log_page);
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/**
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* \brief Determine if a particular feature is supported by the given NVMe controller.
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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* \sa spdk_nvme_ctrlr_cmd_get_feature()
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*/
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bool spdk_nvme_ctrlr_is_feature_supported(struct spdk_nvme_ctrlr *ctrlr, uint8_t feature_code);
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/**
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* Signature for callback function invoked when a command is completed.
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*
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* The spdk_nvme_cpl parameter contains the completion status.
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*/
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typedef void (*spdk_nvme_cmd_cb)(void *, const struct spdk_nvme_cpl *);
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/**
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* Signature for callback function invoked when an asynchronous error
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* request command is completed.
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*
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* The aer_cb_arg parameter is set to the context specified by
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* spdk_nvme_register_aer_callback().
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* The spdk_nvme_cpl parameter contains the completion status of the
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* asynchronous event request that was completed.
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*/
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typedef void (*spdk_nvme_aer_cb)(void *aer_cb_arg,
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const struct spdk_nvme_cpl *);
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void spdk_nvme_ctrlr_register_aer_callback(struct spdk_nvme_ctrlr *ctrlr,
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spdk_nvme_aer_cb aer_cb_fn,
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void *aer_cb_arg);
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/**
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* \brief Opaque handle to a queue pair.
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*
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* I/O queue pairs may be allocated using spdk_nvme_ctrlr_alloc_io_qpair().
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*/
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struct spdk_nvme_qpair;
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/**
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* \brief Allocate an I/O queue pair (submission and completion queue).
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*
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* Each queue pair should only be used from a single thread at a time (mutual exclusion must be
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* enforced by the user).
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*
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* \param ctrlr NVMe controller for which to allocate the I/O queue pair.
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* \param qprio Queue priority for weighted round robin arbitration. If a different arbitration
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* method is in use, pass 0.
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*/
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struct spdk_nvme_qpair *spdk_nvme_ctrlr_alloc_io_qpair(struct spdk_nvme_ctrlr *ctrlr,
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enum spdk_nvme_qprio qprio);
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/**
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* \brief Free an I/O queue pair that was allocated by spdk_nvme_ctrlr_alloc_io_qpair().
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*/
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int spdk_nvme_ctrlr_free_io_qpair(struct spdk_nvme_qpair *qpair);
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/**
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* \brief Send the given NVM I/O command to the NVMe controller.
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*
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* This is a low level interface for submitting I/O commands directly. Prefer
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* the spdk_nvme_ns_cmd_* functions instead. The validity of the command will
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* not be checked!
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*
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* When constructing the nvme_command it is not necessary to fill out the PRP
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* list/SGL or the CID. The driver will handle both of those for you.
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*
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* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
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* The user must ensure that only one thread submits I/O on a given qpair at any given time.
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*/
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int spdk_nvme_ctrlr_cmd_io_raw(struct spdk_nvme_ctrlr *ctrlr,
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struct spdk_nvme_qpair *qpair,
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struct spdk_nvme_cmd *cmd,
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void *buf, uint32_t len,
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spdk_nvme_cmd_cb cb_fn, void *cb_arg);
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/**
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* \brief Process any outstanding completions for I/O submitted on a queue pair.
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*
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* This call is non-blocking, i.e. it only
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* processes completions that are ready at the time of this function call. It does not
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* wait for outstanding commands to finish.
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*
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* For each completed command, the request's callback function will
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* be called if specified as non-NULL when the request was submitted.
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*
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* \param qpair Queue pair to check for completions.
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* \param max_completions Limit the number of completions to be processed in one call, or 0
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* for unlimited.
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*
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* \return Number of completions processed (may be 0) or negative on error.
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*
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* \sa spdk_nvme_cmd_cb
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*
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* This function may be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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* The caller must ensure that each queue pair is only used from one thread at a time.
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*/
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int32_t spdk_nvme_qpair_process_completions(struct spdk_nvme_qpair *qpair,
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uint32_t max_completions);
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/**
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* \brief Send the given admin command to the NVMe controller.
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*
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* This is a low level interface for submitting admin commands directly. Prefer
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* the spdk_nvme_ctrlr_cmd_* functions instead. The validity of the command will
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* not be checked!
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*
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* When constructing the nvme_command it is not necessary to fill out the PRP
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* list/SGL or the CID. The driver will handle both of those for you.
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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* Call \ref spdk_nvme_ctrlr_process_admin_completions() to poll for completion
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* of commands submitted through this function.
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*/
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int spdk_nvme_ctrlr_cmd_admin_raw(struct spdk_nvme_ctrlr *ctrlr,
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struct spdk_nvme_cmd *cmd,
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void *buf, uint32_t len,
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spdk_nvme_cmd_cb cb_fn, void *cb_arg);
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/**
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* \brief Process any outstanding completions for admin commands.
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*
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* This will process completions for admin commands submitted on any thread.
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*
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* This call is non-blocking, i.e. it only processes completions that are ready
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* at the time of this function call. It does not wait for outstanding commands to
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* finish.
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*
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* \return Number of completions processed (may be 0) or negative on error.
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*/
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int32_t spdk_nvme_ctrlr_process_admin_completions(struct spdk_nvme_ctrlr *ctrlr);
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/** \brief Opaque handle to a namespace. Obtained by calling spdk_nvme_ctrlr_get_ns(). */
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struct spdk_nvme_ns;
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/**
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* \brief Get a handle to a namespace for the given controller.
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*
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* Namespaces are numbered from 1 to the total number of namespaces. There will never
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* be any gaps in the numbering. The number of namespaces is obtained by calling
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* spdk_nvme_ctrlr_get_num_ns().
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*/
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struct spdk_nvme_ns *spdk_nvme_ctrlr_get_ns(struct spdk_nvme_ctrlr *ctrlr, uint32_t ns_id);
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/**
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* \brief Get a specific log page from the NVMe controller.
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*
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* \param ctrlr NVMe controller to query.
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* \param log_page The log page identifier.
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* \param nsid Depending on the log page, this may be 0, a namespace identifier, or SPDK_NVME_GLOBAL_NS_TAG.
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* \param payload The pointer to the payload buffer.
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* \param payload_size The size of payload buffer.
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* \param cb_fn Callback function to invoke when the log page has been retrieved.
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* \param cb_arg Argument to pass to the callback function.
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*
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* \return 0 if successfully submitted, ENOMEM if resources could not be allocated for this request
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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* Call \ref spdk_nvme_ctrlr_process_admin_completions() to poll for completion
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* of commands submitted through this function.
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*
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* \sa spdk_nvme_ctrlr_is_log_page_supported()
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*/
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int spdk_nvme_ctrlr_cmd_get_log_page(struct spdk_nvme_ctrlr *ctrlr,
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uint8_t log_page, uint32_t nsid,
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void *payload, uint32_t payload_size,
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spdk_nvme_cmd_cb cb_fn, void *cb_arg);
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/**
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* \brief Set specific feature for the given NVMe controller.
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*
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* \param ctrlr NVMe controller to manipulate.
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* \param feature The feature identifier.
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* \param cdw11 as defined by the specification for this command.
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* \param cdw12 as defined by the specification for this command.
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* \param payload The pointer to the payload buffer.
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* \param payload_size The size of payload buffer.
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* \param cb_fn Callback function to invoke when the feature has been set.
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* \param cb_arg Argument to pass to the callback function.
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*
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* \return 0 if successfully submitted, ENOMEM if resources could not be allocated for this request
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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* Call \ref spdk_nvme_ctrlr_process_admin_completions() to poll for completion
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* of commands submitted through this function.
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*
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* \sa spdk_nvme_ctrlr_cmd_get_feature()
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*/
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int spdk_nvme_ctrlr_cmd_set_feature(struct spdk_nvme_ctrlr *ctrlr,
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uint8_t feature, uint32_t cdw11, uint32_t cdw12,
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void *payload, uint32_t payload_size,
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spdk_nvme_cmd_cb cb_fn, void *cb_arg);
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/**
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* \brief Get specific feature from given NVMe controller.
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*
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* \param ctrlr NVMe controller to query.
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* \param feature The feature identifier.
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* \param cdw11 as defined by the specification for this command.
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* \param payload The pointer to the payload buffer.
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* \param payload_size The size of payload buffer.
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* \param cb_fn Callback function to invoke when the feature has been retrieved.
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* \param cb_arg Argument to pass to the callback function.
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*
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* \return 0 if successfully submitted, ENOMEM if resources could not be allocated for this request
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*
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* This function is thread safe and can be called at any point while the controller is attached to
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* the SPDK NVMe driver.
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*
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* Call \ref spdk_nvme_ctrlr_process_admin_completions() to poll for completion
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* of commands submitted through this function.
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*
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* \sa spdk_nvme_ctrlr_cmd_set_feature()
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*/
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int spdk_nvme_ctrlr_cmd_get_feature(struct spdk_nvme_ctrlr *ctrlr,
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uint8_t feature, uint32_t cdw11,
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void *payload, uint32_t payload_size,
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spdk_nvme_cmd_cb cb_fn, void *cb_arg);
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/**
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* \brief Attach the specified namespace to controllers.
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*
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* \param ctrlr NVMe controller to use for command submission.
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* \param nsid Namespace identifier for namespace to attach.
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* \param payload The pointer to the controller list.
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*
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* \return 0 if successfully submitted, ENOMEM if resources could not be allocated for this request
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*
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* This function is thread safe and can be called at any point after spdk_nvme_attach().
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*
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* Call \ref spdk_nvme_ctrlr_process_admin_completions() to poll for completion
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* of commands submitted through this function.
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*/
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int spdk_nvme_ctrlr_attach_ns(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
|
|
struct spdk_nvme_ctrlr_list *payload);
|
|
|
|
/**
|
|
* \brief Detach the specified namespace from controllers.
|
|
*
|
|
* \param ctrlr NVMe controller to use for command submission.
|
|
* \param nsid Namespace ID to detach.
|
|
* \param payload The pointer to the controller list.
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if resources could not be allocated for this request
|
|
*
|
|
* This function is thread safe and can be called at any point after spdk_nvme_attach().
|
|
*
|
|
* Call \ref spdk_nvme_ctrlr_process_admin_completions() to poll for completion
|
|
* of commands submitted through this function.
|
|
*/
|
|
int spdk_nvme_ctrlr_detach_ns(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
|
|
struct spdk_nvme_ctrlr_list *payload);
|
|
|
|
/**
|
|
* \brief Create a namespace.
|
|
*
|
|
* \param ctrlr NVMe controller to create namespace on.
|
|
* \param payload The pointer to the NVMe namespace data.
|
|
*
|
|
* \return Namespace ID (>= 1) if successfully created, or 0 if the request failed.
|
|
*
|
|
* This function is thread safe and can be called at any point after spdk_nvme_attach().
|
|
*/
|
|
uint32_t spdk_nvme_ctrlr_create_ns(struct spdk_nvme_ctrlr *ctrlr,
|
|
struct spdk_nvme_ns_data *payload);
|
|
|
|
/**
|
|
* \brief Delete a namespace.
|
|
*
|
|
* \param ctrlr NVMe controller to delete namespace from.
|
|
* \param nsid The namespace identifier.
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if resources could not be allocated for this request
|
|
*
|
|
* This function is thread safe and can be called at any point after spdk_nvme_attach().
|
|
*
|
|
* Call \ref spdk_nvme_ctrlr_process_admin_completions() to poll for completion
|
|
* of commands submitted through this function.
|
|
*/
|
|
int spdk_nvme_ctrlr_delete_ns(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid);
|
|
|
|
/**
|
|
* \brief Format NVM.
|
|
*
|
|
* This function requests a low-level format of the media.
|
|
*
|
|
* \param ctrlr NVMe controller to format.
|
|
* \param nsid The namespace identifier. May be SPDK_NVME_GLOBAL_NS_TAG to format all namespaces.
|
|
* \param format The format information for the command.
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if resources could not be allocated for this request
|
|
*
|
|
* This function is thread safe and can be called at any point after spdk_nvme_attach().
|
|
*/
|
|
int spdk_nvme_ctrlr_format(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
|
|
struct spdk_nvme_format *format);
|
|
|
|
/**
|
|
* \brief Download a new firmware image.
|
|
*
|
|
* \param payload The data buffer for the firmware image.
|
|
* \param size The data size will be downloaded.
|
|
* \param slot The slot that the firmware image will be committed to.
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if resources could not be allocated for this request,
|
|
* -1 if the size is not multiple of 4.
|
|
*
|
|
* This function is thread safe and can be called at any point after spdk_nvme_attach().
|
|
*/
|
|
int spdk_nvme_ctrlr_update_firmware(struct spdk_nvme_ctrlr *ctrlr, void *payload, uint32_t size,
|
|
int slot);
|
|
|
|
/**
|
|
* \brief Get the identify namespace data as defined by the NVMe specification.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
const struct spdk_nvme_ns_data *spdk_nvme_ns_get_data(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Get the namespace id (index number) from the given namespace handle.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
uint32_t spdk_nvme_ns_get_id(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Determine whether a namespace is active.
|
|
*
|
|
* Inactive namespaces cannot be the target of I/O commands.
|
|
*/
|
|
bool spdk_nvme_ns_is_active(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Get the maximum transfer size, in bytes, for an I/O sent to the given namespace.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
uint32_t spdk_nvme_ns_get_max_io_xfer_size(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Get the sector size, in bytes, of the given namespace.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
uint32_t spdk_nvme_ns_get_sector_size(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Get the number of sectors for the given namespace.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
uint64_t spdk_nvme_ns_get_num_sectors(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Get the size, in bytes, of the given namespace.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
uint64_t spdk_nvme_ns_get_size(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Get the end-to-end data protection information type of the given namespace.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
enum spdk_nvme_pi_type spdk_nvme_ns_get_pi_type(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Get the metadata size, in bytes, of the given namespace.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
uint32_t spdk_nvme_ns_get_md_size(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief True if the namespace can support extended LBA when end-to-end data protection enabled.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
bool spdk_nvme_ns_supports_extended_lba(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* \brief Namespace command support flags.
|
|
*/
|
|
enum spdk_nvme_ns_flags {
|
|
SPDK_NVME_NS_DEALLOCATE_SUPPORTED = 0x1, /**< The deallocate command is supported */
|
|
SPDK_NVME_NS_FLUSH_SUPPORTED = 0x2, /**< The flush command is supported */
|
|
SPDK_NVME_NS_RESERVATION_SUPPORTED = 0x4, /**< The reservation command is supported */
|
|
SPDK_NVME_NS_WRITE_ZEROES_SUPPORTED = 0x8, /**< The write zeroes command is supported */
|
|
SPDK_NVME_NS_DPS_PI_SUPPORTED = 0x10, /**< The end-to-end data protection is supported */
|
|
SPDK_NVME_NS_EXTENDED_LBA_SUPPORTED = 0x20, /**< The extended lba format is supported,
|
|
metadata is transferred as a contiguous
|
|
part of the logical block that it is associated with */
|
|
};
|
|
|
|
/**
|
|
* \brief Get the flags for the given namespace.
|
|
*
|
|
* See spdk_nvme_ns_flags for the possible flags returned.
|
|
*
|
|
* This function is thread safe and can be called at any point while the controller is attached to
|
|
* the SPDK NVMe driver.
|
|
*/
|
|
uint32_t spdk_nvme_ns_get_flags(struct spdk_nvme_ns *ns);
|
|
|
|
/**
|
|
* Restart the SGL walk to the specified offset when the command has scattered payloads.
|
|
*
|
|
* The cb_arg parameter is the value passed to readv/writev.
|
|
*/
|
|
typedef void (*spdk_nvme_req_reset_sgl_cb)(void *cb_arg, uint32_t offset);
|
|
|
|
/**
|
|
* Fill out *address and *length with the current SGL entry and advance to the next
|
|
* entry for the next time the callback is invoked.
|
|
*
|
|
* The cb_arg parameter is the value passed to readv/writev.
|
|
* The address parameter contains the physical address of this segment.
|
|
* The length parameter contains the length of this physical segment.
|
|
*/
|
|
typedef int (*spdk_nvme_req_next_sge_cb)(void *cb_arg, uint64_t *address, uint32_t *length);
|
|
|
|
/**
|
|
* \brief Submits a write I/O to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the write I/O
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param payload virtual address pointer to the data payload
|
|
* \param lba starting LBA to write the data
|
|
* \param lba_count length (in sectors) for the write operation
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
* \param io_flags set flags, defined by the SPDK_NVME_IO_FLAGS_* entries
|
|
* in spdk/nvme_spec.h, for this I/O.
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_write(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair, void *payload,
|
|
uint64_t lba, uint32_t lba_count, spdk_nvme_cmd_cb cb_fn,
|
|
void *cb_arg, uint32_t io_flags);
|
|
|
|
/**
|
|
* \brief Submits a write I/O to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the write I/O
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param lba starting LBA to write the data
|
|
* \param lba_count length (in sectors) for the write operation
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
* \param io_flags set flags, defined in nvme_spec.h, for this I/O
|
|
* \param reset_sgl_fn callback function to reset scattered payload
|
|
* \param next_sge_fn callback function to iterate each scattered
|
|
* payload memory segment
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_writev(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
|
|
uint64_t lba, uint32_t lba_count,
|
|
spdk_nvme_cmd_cb cb_fn, void *cb_arg, uint32_t io_flags,
|
|
spdk_nvme_req_reset_sgl_cb reset_sgl_fn,
|
|
spdk_nvme_req_next_sge_cb next_sge_fn);
|
|
|
|
/**
|
|
* \brief Submits a write I/O to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the write I/O
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param payload virtual address pointer to the data payload
|
|
* \param metadata virtual address pointer to the metadata payload, the length
|
|
* of metadata is specified by spdk_nvme_ns_get_md_size()
|
|
* \param lba starting LBA to write the data
|
|
* \param lba_count length (in sectors) for the write operation
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
* \param io_flags set flags, defined by the SPDK_NVME_IO_FLAGS_* entries
|
|
* in spdk/nvme_spec.h, for this I/O.
|
|
* \param apptag_mask application tag mask.
|
|
* \param apptag application tag to use end-to-end protection information.
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_write_with_md(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
|
|
void *payload, void *metadata,
|
|
uint64_t lba, uint32_t lba_count, spdk_nvme_cmd_cb cb_fn,
|
|
void *cb_arg, uint32_t io_flags,
|
|
uint16_t apptag_mask, uint16_t apptag);
|
|
|
|
/**
|
|
* \brief Submits a write zeroes I/O to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the write zeroes I/O
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param lba starting LBA for this command
|
|
* \param lba_count length (in sectors) for the write zero operation
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
* \param io_flags set flags, defined by the SPDK_NVME_IO_FLAGS_* entries
|
|
* in spdk/nvme_spec.h, for this I/O.
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_write_zeroes(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
|
|
uint64_t lba, uint32_t lba_count,
|
|
spdk_nvme_cmd_cb cb_fn, void *cb_arg,
|
|
uint32_t io_flags);
|
|
|
|
/**
|
|
* \brief Submits a read I/O to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the read I/O
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param payload virtual address pointer to the data payload
|
|
* \param lba starting LBA to read the data
|
|
* \param lba_count length (in sectors) for the read operation
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
* \param io_flags set flags, defined in nvme_spec.h, for this I/O
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_read(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair, void *payload,
|
|
uint64_t lba, uint32_t lba_count, spdk_nvme_cmd_cb cb_fn,
|
|
void *cb_arg, uint32_t io_flags);
|
|
|
|
/**
|
|
* \brief Submits a read I/O to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the read I/O
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param lba starting LBA to read the data
|
|
* \param lba_count length (in sectors) for the read operation
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
* \param io_flags set flags, defined in nvme_spec.h, for this I/O
|
|
* \param reset_sgl_fn callback function to reset scattered payload
|
|
* \param next_sge_fn callback function to iterate each scattered
|
|
* payload memory segment
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_readv(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
|
|
uint64_t lba, uint32_t lba_count,
|
|
spdk_nvme_cmd_cb cb_fn, void *cb_arg, uint32_t io_flags,
|
|
spdk_nvme_req_reset_sgl_cb reset_sgl_fn,
|
|
spdk_nvme_req_next_sge_cb next_sge_fn);
|
|
|
|
/**
|
|
* \brief Submits a read I/O to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the read I/O
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param payload virtual address pointer to the data payload
|
|
* \param metadata virtual address pointer to the metadata payload, the length
|
|
* of metadata is specified by spdk_nvme_ns_get_md_size()
|
|
* \param lba starting LBA to read the data
|
|
* \param lba_count length (in sectors) for the read operation
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
* \param io_flags set flags, defined in nvme_spec.h, for this I/O
|
|
* \param apptag_mask application tag mask.
|
|
* \param apptag application tag to use end-to-end protection information.
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_read_with_md(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
|
|
void *payload, void *metadata,
|
|
uint64_t lba, uint32_t lba_count, spdk_nvme_cmd_cb cb_fn,
|
|
void *cb_arg, uint32_t io_flags,
|
|
uint16_t apptag_mask, uint16_t apptag);
|
|
|
|
/**
|
|
* \brief Submits a data set management request to the specified NVMe namespace. Data set
|
|
* management operations are designed to optimize interaction with the block
|
|
* translation layer inside the device. The most common type of operation is
|
|
* deallocate, which is often referred to as TRIM or UNMAP.
|
|
*
|
|
* \param ns NVMe namespace to submit the DSM request
|
|
* \param type A bit field constructed from \ref enum spdk_nvme_dsm_attribute.
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param ranges An array of \ref spdk_nvme_dsm_range elements describing
|
|
the LBAs to operate on.
|
|
* \param num_ranges The number of elements in the ranges array.
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
*
|
|
* \return 0 if successfully submitted, negated POSIX errno values otherwise.
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*
|
|
* This is a convenience wrapper that will automatically allocate and construct the correct
|
|
* data buffers. Therefore, ranges does not need to be allocated from pinned memory and
|
|
* can be placed on the stack. If a higher performance, zero-copy version of DSM is
|
|
* required, simply build and submit a raw command using spdk_nvme_ctrlr_cmd_io_raw().
|
|
*/
|
|
int spdk_nvme_ns_cmd_dataset_management(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
|
|
uint32_t type,
|
|
const struct spdk_nvme_dsm_range *ranges,
|
|
uint16_t num_ranges,
|
|
spdk_nvme_cmd_cb cb_fn,
|
|
void *cb_arg);
|
|
|
|
/**
|
|
* \brief Submits a flush request to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the flush request
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_flush(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
|
|
spdk_nvme_cmd_cb cb_fn, void *cb_arg);
|
|
|
|
/**
|
|
* \brief Submits a reservation register to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the reservation register request
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param payload virtual address pointer to the reservation register data
|
|
* \param ignore_key '1' the current reservation key check is disabled
|
|
* \param action specifies the registration action
|
|
* \param cptpl change the Persist Through Power Loss state
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_reservation_register(struct spdk_nvme_ns *ns,
|
|
struct spdk_nvme_qpair *qpair,
|
|
struct spdk_nvme_reservation_register_data *payload,
|
|
bool ignore_key,
|
|
enum spdk_nvme_reservation_register_action action,
|
|
enum spdk_nvme_reservation_register_cptpl cptpl,
|
|
spdk_nvme_cmd_cb cb_fn, void *cb_arg);
|
|
|
|
/**
|
|
* \brief Submits a reservation release to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the reservation release request
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param payload virtual address pointer to current reservation key
|
|
* \param ignore_key '1' the current reservation key check is disabled
|
|
* \param action specifies the reservation release action
|
|
* \param type reservation type for the namespace
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_reservation_release(struct spdk_nvme_ns *ns,
|
|
struct spdk_nvme_qpair *qpair,
|
|
struct spdk_nvme_reservation_key_data *payload,
|
|
bool ignore_key,
|
|
enum spdk_nvme_reservation_release_action action,
|
|
enum spdk_nvme_reservation_type type,
|
|
spdk_nvme_cmd_cb cb_fn, void *cb_arg);
|
|
|
|
/**
|
|
* \brief Submits a reservation acquire to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the reservation acquire request
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param payload virtual address pointer to reservation acquire data
|
|
* \param ignore_key '1' the current reservation key check is disabled
|
|
* \param action specifies the reservation acquire action
|
|
* \param type reservation type for the namespace
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_reservation_acquire(struct spdk_nvme_ns *ns,
|
|
struct spdk_nvme_qpair *qpair,
|
|
struct spdk_nvme_reservation_acquire_data *payload,
|
|
bool ignore_key,
|
|
enum spdk_nvme_reservation_acquire_action action,
|
|
enum spdk_nvme_reservation_type type,
|
|
spdk_nvme_cmd_cb cb_fn, void *cb_arg);
|
|
|
|
/**
|
|
* \brief Submits a reservation report to the specified NVMe namespace.
|
|
*
|
|
* \param ns NVMe namespace to submit the reservation report request
|
|
* \param qpair I/O queue pair to submit the request
|
|
* \param payload virtual address pointer for reservation status data
|
|
* \param len length bytes for reservation status data structure
|
|
* \param cb_fn callback function to invoke when the I/O is completed
|
|
* \param cb_arg argument to pass to the callback function
|
|
*
|
|
* \return 0 if successfully submitted, ENOMEM if an nvme_request
|
|
* structure cannot be allocated for the I/O request
|
|
*
|
|
* The command is submitted to a qpair allocated by spdk_nvme_ctrlr_alloc_io_qpair().
|
|
* The user must ensure that only one thread submits I/O on a given qpair at any given time.
|
|
*/
|
|
int spdk_nvme_ns_cmd_reservation_report(struct spdk_nvme_ns *ns,
|
|
struct spdk_nvme_qpair *qpair,
|
|
void *payload, uint32_t len,
|
|
spdk_nvme_cmd_cb cb_fn, void *cb_arg);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|