141354d55b
Define the structures and constants required to implement Namespace Types support. Namespace Types introduce a new command set, "I/O Command Sets", that allows the host to retrieve the command sets associated with a namespace. Introduce support for the command set and enable detection for the NVM Command Set. The new workflows for identify commands rely heavily on zero-filled identify structs. E.g., certain CNS commands are defined to return a zero-filled identify struct when an inactive namespace NSID is supplied. Add a helper function in order to avoid code duplication when reporting zero-filled identify structures. Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com> Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/*
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* QEMU NVM Express Virtual Namespace
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*
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* Copyright (c) 2019 CNEX Labs
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* Copyright (c) 2020 Samsung Electronics
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*
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* Authors:
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* Klaus Jensen <k.jensen@samsung.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See the
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* COPYING file in the top-level directory.
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*
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*/
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#ifndef NVME_NS_H
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#define NVME_NS_H
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#define TYPE_NVME_NS "nvme-ns"
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#define NVME_NS(obj) \
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OBJECT_CHECK(NvmeNamespace, (obj), TYPE_NVME_NS)
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typedef struct NvmeNamespaceParams {
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uint32_t nsid;
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QemuUUID uuid;
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} NvmeNamespaceParams;
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typedef struct NvmeNamespace {
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DeviceState parent_obj;
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BlockConf blkconf;
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int32_t bootindex;
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int64_t size;
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NvmeIdNs id_ns;
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const uint32_t *iocs;
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uint8_t csi;
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NvmeNamespaceParams params;
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struct {
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uint32_t err_rec;
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} features;
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} NvmeNamespace;
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static inline uint32_t nvme_nsid(NvmeNamespace *ns)
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{
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if (ns) {
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return ns->params.nsid;
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}
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return -1;
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}
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static inline NvmeLBAF *nvme_ns_lbaf(NvmeNamespace *ns)
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{
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NvmeIdNs *id_ns = &ns->id_ns;
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return &id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(id_ns->flbas)];
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}
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static inline uint8_t nvme_ns_lbads(NvmeNamespace *ns)
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{
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return nvme_ns_lbaf(ns)->ds;
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}
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/* calculate the number of LBAs that the namespace can accomodate */
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static inline uint64_t nvme_ns_nlbas(NvmeNamespace *ns)
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{
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return ns->size >> nvme_ns_lbads(ns);
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}
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/* convert an LBA to the equivalent in bytes */
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static inline size_t nvme_l2b(NvmeNamespace *ns, uint64_t lba)
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{
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return lba << nvme_ns_lbads(ns);
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}
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typedef struct NvmeCtrl NvmeCtrl;
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int nvme_ns_setup(NvmeCtrl *n, NvmeNamespace *ns, Error **errp);
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void nvme_ns_drain(NvmeNamespace *ns);
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void nvme_ns_shutdown(NvmeNamespace *ns);
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#endif /* NVME_NS_H */
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