60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
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* QEMU NVM Express Subsystem: nvme-subsys
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*
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* Copyright (c) 2021 Minwoo Im <minwoo.im.dev@gmail.com>
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*
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* This code is licensed under the GNU GPL v2. Refer COPYING.
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*/
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#ifndef NVME_SUBSYS_H
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#define NVME_SUBSYS_H
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#define TYPE_NVME_SUBSYS "nvme-subsys"
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#define NVME_SUBSYS(obj) \
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OBJECT_CHECK(NvmeSubsystem, (obj), TYPE_NVME_SUBSYS)
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#define NVME_SUBSYS_MAX_CTRLS 32
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#define NVME_MAX_NAMESPACES 256
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typedef struct NvmeCtrl NvmeCtrl;
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typedef struct NvmeNamespace NvmeNamespace;
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typedef struct NvmeSubsystem {
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DeviceState parent_obj;
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uint8_t subnqn[256];
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NvmeCtrl *ctrls[NVME_SUBSYS_MAX_CTRLS];
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/* Allocated namespaces for this subsystem */
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NvmeNamespace *namespaces[NVME_MAX_NAMESPACES + 1];
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struct {
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char *nqn;
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} params;
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} NvmeSubsystem;
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int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp);
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static inline NvmeCtrl *nvme_subsys_ctrl(NvmeSubsystem *subsys,
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uint32_t cntlid)
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{
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if (!subsys || cntlid >= NVME_SUBSYS_MAX_CTRLS) {
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return NULL;
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}
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return subsys->ctrls[cntlid];
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}
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/*
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* Return allocated namespace of the specified nsid in the subsystem.
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*/
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static inline NvmeNamespace *nvme_subsys_ns(NvmeSubsystem *subsys,
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uint32_t nsid)
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{
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if (!subsys || !nsid || nsid > NVME_MAX_NAMESPACES) {
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return NULL;
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}
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return subsys->namespaces[nsid];
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}
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#endif /* NVME_SUBSYS_H */
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