2  * QEMU NVM Express Subsystem: nvme-subsys
19     NvmeSubsystem *subsys = n->subsys;  in nvme_subsys_reserve_cntlids()
20     NvmeSecCtrlEntry *list = n->sec_ctrl_list;  in nvme_subsys_reserve_cntlids()
24     for (i = start; i < ARRAY_SIZE(subsys->ctrls) && cnt < num; i++) {  in nvme_subsys_reserve_cntlids()
25         if (!subsys->ctrls[i]) {  in nvme_subsys_reserve_cntlids()
27             sctrl->scid = cpu_to_le16(i);  in nvme_subsys_reserve_cntlids()
28             subsys->ctrls[i] = SUBSYS_SLOT_RSVD;  in nvme_subsys_reserve_cntlids()
38     NvmeSubsystem *subsys = n->subsys;  in nvme_subsys_unreserve_cntlids()
39     NvmeSecCtrlEntry *list = n->sec_ctrl_list;  in nvme_subsys_unreserve_cntlids()
43     for (i = 0; i < n->params.sriov_max_vfs; i++) {  in nvme_subsys_unreserve_cntlids()
45         cntlid = le16_to_cpu(sctrl->scid);  in nvme_subsys_unreserve_cntlids()
48             assert(subsys->ctrls[cntlid] == SUBSYS_SLOT_RSVD);  in nvme_subsys_unreserve_cntlids()
49             subsys->ctrls[cntlid] = NULL;  in nvme_subsys_unreserve_cntlids()
50             sctrl->scid = 0;  in nvme_subsys_unreserve_cntlids()
57     NvmeSubsystem *subsys = n->subsys;  in nvme_subsys_register_ctrl()
59     int cntlid, nsid, num_rsvd, num_vfs = n->params.sriov_max_vfs;  in nvme_subsys_register_ctrl()
61     if (pci_is_vf(&n->parent_obj)) {  in nvme_subsys_register_ctrl()
62         cntlid = le16_to_cpu(sctrl->scid);  in nvme_subsys_register_ctrl()
64         n->sec_ctrl_list = g_new0(NvmeSecCtrlEntry, num_vfs);  in nvme_subsys_register_ctrl()
66         for (cntlid = 0; cntlid < ARRAY_SIZE(subsys->ctrls); cntlid++) {  in nvme_subsys_register_ctrl()
67             if (!subsys->ctrls[cntlid]) {  in nvme_subsys_register_ctrl()
72         if (cntlid == ARRAY_SIZE(subsys->ctrls)) {  in nvme_subsys_register_ctrl()
74             return -1;  in nvme_subsys_register_ctrl()
82             return -1;  in nvme_subsys_register_ctrl()
86     if (!subsys->serial) {  in nvme_subsys_register_ctrl()
87         subsys->serial = g_strdup(n->params.serial);  in nvme_subsys_register_ctrl()
88     } else if (strcmp(subsys->serial, n->params.serial)) {  in nvme_subsys_register_ctrl()
90         return -1;  in nvme_subsys_register_ctrl()
93     subsys->ctrls[cntlid] = n;  in nvme_subsys_register_ctrl()
95     for (nsid = 1; nsid < ARRAY_SIZE(subsys->namespaces); nsid++) {  in nvme_subsys_register_ctrl()
96         NvmeNamespace *ns = subsys->namespaces[nsid];  in nvme_subsys_register_ctrl()
97         if (ns && ns->params.shared && !ns->params.detached) {  in nvme_subsys_register_ctrl()
107     if (pci_is_vf(&n->parent_obj)) {  in nvme_subsys_unregister_ctrl()
108         subsys->ctrls[n->cntlid] = SUBSYS_SLOT_RSVD;  in nvme_subsys_unregister_ctrl()
110         subsys->ctrls[n->cntlid] = NULL;  in nvme_subsys_unregister_ctrl()
114     n->cntlid = -1;  in nvme_subsys_unregister_ctrl()
147     NvmeEnduranceGroup *endgrp = &subsys->endgrp;  in nvme_subsys_setup_fdp()
149     if (!subsys->params.fdp.runs) {  in nvme_subsys_setup_fdp()
150         error_setg(errp, "fdp.runs must be non-zero");  in nvme_subsys_setup_fdp()
154     endgrp->fdp.runs = subsys->params.fdp.runs;  in nvme_subsys_setup_fdp()
156     if (!subsys->params.fdp.nrg) {  in nvme_subsys_setup_fdp()
157         error_setg(errp, "fdp.nrg must be non-zero");  in nvme_subsys_setup_fdp()
161     endgrp->fdp.nrg = subsys->params.fdp.nrg;  in nvme_subsys_setup_fdp()
163     if (!subsys->params.fdp.nruh ||  in nvme_subsys_setup_fdp()
164         subsys->params.fdp.nruh > NVME_FDP_MAXPIDS) {  in nvme_subsys_setup_fdp()
165         error_setg(errp, "fdp.nruh must be non-zero and less than %u",  in nvme_subsys_setup_fdp()
170     endgrp->fdp.nruh = subsys->params.fdp.nruh;  in nvme_subsys_setup_fdp()
172     if (!nvme_calc_rgif(endgrp->fdp.nruh, endgrp->fdp.nrg, &endgrp->fdp.rgif)) {  in nvme_subsys_setup_fdp()
175                    endgrp->fdp.nruh, endgrp->fdp.nrg);  in nvme_subsys_setup_fdp()
179     endgrp->fdp.ruhs = g_new(NvmeRuHandle, endgrp->fdp.nruh);  in nvme_subsys_setup_fdp()
181     for (uint16_t ruhid = 0; ruhid < endgrp->fdp.nruh; ruhid++) {  in nvme_subsys_setup_fdp()
182         endgrp->fdp.ruhs[ruhid] = (NvmeRuHandle) {  in nvme_subsys_setup_fdp()
187         endgrp->fdp.ruhs[ruhid].rus = g_new(NvmeReclaimUnit, endgrp->fdp.nrg);  in nvme_subsys_setup_fdp()
190     endgrp->fdp.enabled = true;  in nvme_subsys_setup_fdp()
197     const char *nqn = subsys->params.nqn ?  in nvme_subsys_setup()
198         subsys->params.nqn : subsys->parent_obj.id;  in nvme_subsys_setup()
200     snprintf((char *)subsys->subnqn, sizeof(subsys->subnqn),  in nvme_subsys_setup()
201              "nqn.2019-08.org.qemu:%s", nqn);  in nvme_subsys_setup()
203     if (subsys->params.fdp.enabled && !nvme_subsys_setup_fdp(subsys, errp)) {  in nvme_subsys_setup()
214     qbus_init(&subsys->bus, sizeof(NvmeBus), TYPE_NVME_BUS, dev, dev->id);  in nvme_subsys_realize()
222     DEFINE_PROP_SIZE("fdp.runs", NvmeSubsystem, params.fdp.runs,
233     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);  in nvme_subsys_class_init()
235     dc->realize = nvme_subsys_realize;  in nvme_subsys_class_init()
236     dc->desc = "Virtual NVMe subsystem";  in nvme_subsys_class_init()
237     dc->hotpluggable = false;  in nvme_subsys_class_init()