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