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hw/nvme: always initialize a subsystem

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If no nvme-subsys is explicitly configured, instantiate one.

Reviewed-by: Jesper Wendel Devantier <foss@defmacro.it>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Klaus Jensen 2024-12-16 13:53:02 +01:00
parent 23a4b3ebc7
commit cd59f50ab0
2 changed files with 42 additions and 58 deletions
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36
hw/nvme/ctrl.c
View file

@ -8823,15 +8823,13 @@ static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev)
id->psd[0].enlat = cpu_to_le32(0x10);
id->psd[0].exlat = cpu_to_le32(0x4);
if (n->subsys) {
id->cmic |= NVME_CMIC_MULTI_CTRL;
ctratt |= NVME_CTRATT_ENDGRPS;
id->cmic |= NVME_CMIC_MULTI_CTRL;
ctratt |= NVME_CTRATT_ENDGRPS;
id->endgidmax = cpu_to_le16(0x1);
id->endgidmax = cpu_to_le16(0x1);
if (n->subsys->endgrp.fdp.enabled) {
ctratt |= NVME_CTRATT_FDPS;
}
if (n->subsys->endgrp.fdp.enabled) {
ctratt |= NVME_CTRATT_FDPS;
}
id->ctratt = cpu_to_le32(ctratt);
@ -8860,7 +8858,15 @@ static int nvme_init_subsys(NvmeCtrl *n, Error **errp)
int cntlid;
if (!n->subsys) {
return 0;
DeviceState *dev = qdev_new(TYPE_NVME_SUBSYS);
qdev_prop_set_string(dev, "nqn", n->params.serial);
if (!qdev_realize(dev, NULL, errp)) {
return -1;
}
n->subsys = NVME_SUBSYS(dev);
}
cntlid = nvme_subsys_register_ctrl(n, errp);
@ -8950,17 +8956,15 @@ static void nvme_exit(PCIDevice *pci_dev)
nvme_ctrl_reset(n, NVME_RESET_FUNCTION);
if (n->subsys) {
for (i = 1; i <= NVME_MAX_NAMESPACES; i++) {
ns = nvme_ns(n, i);
if (ns) {
ns->attached--;
}
for (i = 1; i <= NVME_MAX_NAMESPACES; i++) {
ns = nvme_ns(n, i);
if (ns) {
ns->attached--;
}
nvme_subsys_unregister_ctrl(n->subsys, n);
}
nvme_subsys_unregister_ctrl(n->subsys, n);
g_free(n->cq);
g_free(n->sq);
g_free(n->aer_reqs);

64
hw/nvme/ns.c
View file

@ -727,25 +727,14 @@ static void nvme_ns_realize(DeviceState *dev, Error **errp)
uint32_t nsid = ns->params.nsid;
int i;
if (!n->subsys) {
/* If no subsys, the ns cannot be attached to more than one ctrl. */
ns->params.shared = false;
if (ns->params.detached) {
error_setg(errp, "detached requires that the nvme device is "
"linked to an nvme-subsys device");
return;
}
} else {
/*
* If this namespace belongs to a subsystem (through a link on the
* controller device), reparent the device.
*/
if (!qdev_set_parent_bus(dev, &subsys->bus.parent_bus, errp)) {
return;
}
ns->subsys = subsys;
ns->endgrp = &subsys->endgrp;
assert(subsys);
/* reparent to subsystem bus */
if (!qdev_set_parent_bus(dev, &subsys->bus.parent_bus, errp)) {
return;
}
ns->subsys = subsys;
ns->endgrp = &subsys->endgrp;
if (nvme_ns_setup(ns, errp)) {
return;
@ -753,7 +742,7 @@ static void nvme_ns_realize(DeviceState *dev, Error **errp)
if (!nsid) {
for (i = 1; i <= NVME_MAX_NAMESPACES; i++) {
if (nvme_ns(n, i) || nvme_subsys_ns(subsys, i)) {
if (nvme_subsys_ns(subsys, i)) {
continue;
}
@ -765,38 +754,29 @@ static void nvme_ns_realize(DeviceState *dev, Error **errp)
error_setg(errp, "no free namespace id");
return;
}
} else {
if (nvme_ns(n, nsid) || nvme_subsys_ns(subsys, nsid)) {
error_setg(errp, "namespace id '%d' already allocated", nsid);
return;
}
} else if (nvme_subsys_ns(subsys, nsid)) {
error_setg(errp, "namespace id '%d' already allocated", nsid);
return;
}
if (subsys) {
subsys->namespaces[nsid] = ns;
subsys->namespaces[nsid] = ns;
ns->id_ns.endgid = cpu_to_le16(0x1);
ns->id_ns_ind.endgrpid = cpu_to_le16(0x1);
ns->id_ns.endgid = cpu_to_le16(0x1);
ns->id_ns_ind.endgrpid = cpu_to_le16(0x1);
if (ns->params.detached) {
return;
}
if (ns->params.detached) {
return;
}
if (ns->params.shared) {
for (i = 0; i < ARRAY_SIZE(subsys->ctrls); i++) {
NvmeCtrl *ctrl = subsys->ctrls[i];
if (ns->params.shared) {
for (i = 0; i < ARRAY_SIZE(subsys->ctrls); i++) {
NvmeCtrl *ctrl = subsys->ctrls[i];
if (ctrl && ctrl != SUBSYS_SLOT_RSVD) {
nvme_attach_ns(ctrl, ns);
}
if (ctrl && ctrl != SUBSYS_SLOT_RSVD) {
nvme_attach_ns(ctrl, ns);
}
return;
}
}
nvme_attach_ns(n, ns);
}
static const Property nvme_ns_props[] = {