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-rw-r--r--hw/nvme/ctrl.c35
-rw-r--r--hw/nvme/ns.c2
-rw-r--r--hw/nvme/nvme.h18
-rw-r--r--hw/nvme/subsys.c75
-rw-r--r--hw/nvme/trace-events1
5 files changed, 121 insertions, 10 deletions
diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index d004b48..b031212 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -4812,6 +4812,29 @@ static uint16_t nvme_identify_pri_ctrl_cap(NvmeCtrl *n, NvmeRequest *req)
sizeof(NvmePriCtrlCap), req);
}
+static uint16_t nvme_identify_sec_ctrl_list(NvmeCtrl *n, NvmeRequest *req)
+{
+ NvmeIdentify *c = (NvmeIdentify *)&req->cmd;
+ uint16_t pri_ctrl_id = le16_to_cpu(n->pri_ctrl_cap.cntlid);
+ uint16_t min_id = le16_to_cpu(c->ctrlid);
+ uint8_t num_sec_ctrl = n->sec_ctrl_list.numcntl;
+ NvmeSecCtrlList list = {0};
+ uint8_t i;
+
+ for (i = 0; i < num_sec_ctrl; i++) {
+ if (n->sec_ctrl_list.sec[i].scid >= min_id) {
+ list.numcntl = num_sec_ctrl - i;
+ memcpy(&list.sec, n->sec_ctrl_list.sec + i,
+ list.numcntl * sizeof(NvmeSecCtrlEntry));
+ break;
+ }
+ }
+
+ trace_pci_nvme_identify_sec_ctrl_list(pri_ctrl_id, list.numcntl);
+
+ return nvme_c2h(n, (uint8_t *)&list, sizeof(list), req);
+}
+
static uint16_t nvme_identify_ns_csi(NvmeCtrl *n, NvmeRequest *req,
bool active)
{
@@ -5030,6 +5053,8 @@ static uint16_t nvme_identify(NvmeCtrl *n, NvmeRequest *req)
return nvme_identify_ctrl_list(n, req, false);
case NVME_ID_CNS_PRIMARY_CTRL_CAP:
return nvme_identify_pri_ctrl_cap(n, req);
+ case NVME_ID_CNS_SECONDARY_CTRL_LIST:
+ return nvme_identify_sec_ctrl_list(n, req);
case NVME_ID_CNS_CS_NS:
return nvme_identify_ns_csi(n, req, true);
case NVME_ID_CNS_CS_NS_PRESENT:
@@ -6622,6 +6647,9 @@ static void nvme_check_constraints(NvmeCtrl *n, Error **errp)
static void nvme_init_state(NvmeCtrl *n)
{
NvmePriCtrlCap *cap = &n->pri_ctrl_cap;
+ NvmeSecCtrlList *list = &n->sec_ctrl_list;
+ NvmeSecCtrlEntry *sctrl;
+ int i;
/* add one to max_ioqpairs to account for the admin queue pair */
n->reg_size = pow2ceil(sizeof(NvmeBar) +
@@ -6633,6 +6661,13 @@ static void nvme_init_state(NvmeCtrl *n)
n->starttime_ms = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL);
n->aer_reqs = g_new0(NvmeRequest *, n->params.aerl + 1);
+ list->numcntl = cpu_to_le16(n->params.sriov_max_vfs);
+ for (i = 0; i < n->params.sriov_max_vfs; i++) {
+ sctrl = &list->sec[i];
+ sctrl->pcid = cpu_to_le16(n->cntlid);
+ sctrl->vfn = cpu_to_le16(i + 1);
+ }
+
cap->cntlid = cpu_to_le16(n->cntlid);
}
diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index 1b9c9d1..870c3ca 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -597,7 +597,7 @@ static void nvme_ns_realize(DeviceState *dev, Error **errp)
for (i = 0; i < ARRAY_SIZE(subsys->ctrls); i++) {
NvmeCtrl *ctrl = subsys->ctrls[i];
- if (ctrl) {
+ if (ctrl && ctrl != SUBSYS_SLOT_RSVD) {
nvme_attach_ns(ctrl, ns);
}
}
diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index 6ef458d..b66421c 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -43,6 +43,7 @@ typedef struct NvmeBus {
#define TYPE_NVME_SUBSYS "nvme-subsys"
#define NVME_SUBSYS(obj) \
OBJECT_CHECK(NvmeSubsystem, (obj), TYPE_NVME_SUBSYS)
+#define SUBSYS_SLOT_RSVD (void *)0xFFFF
typedef struct NvmeSubsystem {
DeviceState parent_obj;
@@ -68,6 +69,10 @@ static inline NvmeCtrl *nvme_subsys_ctrl(NvmeSubsystem *subsys,
return NULL;
}
+ if (subsys->ctrls[cntlid] == SUBSYS_SLOT_RSVD) {
+ return NULL;
+ }
+
return subsys->ctrls[cntlid];
}
@@ -480,6 +485,7 @@ typedef struct NvmeCtrl {
} features;
NvmePriCtrlCap pri_ctrl_cap;
+ NvmeSecCtrlList sec_ctrl_list;
} NvmeCtrl;
static inline NvmeNamespace *nvme_ns(NvmeCtrl *n, uint32_t nsid)
@@ -514,6 +520,18 @@ static inline uint16_t nvme_cid(NvmeRequest *req)
return le16_to_cpu(req->cqe.cid);
}
+static inline NvmeSecCtrlEntry *nvme_sctrl(NvmeCtrl *n)
+{
+ PCIDevice *pci_dev = &n->parent_obj;
+ NvmeCtrl *pf = NVME(pcie_sriov_get_pf(pci_dev));
+
+ if (pci_is_vf(pci_dev)) {
+ return &pf->sec_ctrl_list.sec[pcie_sriov_vf_number(pci_dev)];
+ }
+
+ return NULL;
+}
+
void nvme_attach_ns(NvmeCtrl *n, NvmeNamespace *ns);
uint16_t nvme_bounce_data(NvmeCtrl *n, void *ptr, uint32_t len,
NvmeTxDirection dir, NvmeRequest *req);
diff --git a/hw/nvme/subsys.c b/hw/nvme/subsys.c
index 691a90d..9d26436 100644
--- a/hw/nvme/subsys.c
+++ b/hw/nvme/subsys.c
@@ -11,20 +11,71 @@
#include "nvme.h"
-int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp)
+static int nvme_subsys_reserve_cntlids(NvmeCtrl *n, int start, int num)
{
NvmeSubsystem *subsys = n->subsys;
- int cntlid, nsid;
+ NvmeSecCtrlList *list = &n->sec_ctrl_list;
+ NvmeSecCtrlEntry *sctrl;
+ int i, cnt = 0;
+
+ for (i = start; i < ARRAY_SIZE(subsys->ctrls) && cnt < num; i++) {
+ if (!subsys->ctrls[i]) {
+ sctrl = &list->sec[cnt];
+ sctrl->scid = cpu_to_le16(i);
+ subsys->ctrls[i] = SUBSYS_SLOT_RSVD;
+ cnt++;
+ }
+ }
+
+ return cnt;
+}
- for (cntlid = 0; cntlid < ARRAY_SIZE(subsys->ctrls); cntlid++) {
- if (!subsys->ctrls[cntlid]) {
- break;
+static void nvme_subsys_unreserve_cntlids(NvmeCtrl *n)
+{
+ NvmeSubsystem *subsys = n->subsys;
+ NvmeSecCtrlList *list = &n->sec_ctrl_list;
+ NvmeSecCtrlEntry *sctrl;
+ int i, cntlid;
+
+ for (i = 0; i < n->params.sriov_max_vfs; i++) {
+ sctrl = &list->sec[i];
+ cntlid = le16_to_cpu(sctrl->scid);
+
+ if (cntlid) {
+ assert(subsys->ctrls[cntlid] == SUBSYS_SLOT_RSVD);
+ subsys->ctrls[cntlid] = NULL;
+ sctrl->scid = 0;
}
}
+}
- if (cntlid == ARRAY_SIZE(subsys->ctrls)) {
- error_setg(errp, "no more free controller id");
- return -1;
+int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp)
+{
+ NvmeSubsystem *subsys = n->subsys;
+ NvmeSecCtrlEntry *sctrl = nvme_sctrl(n);
+ int cntlid, nsid, num_rsvd, num_vfs = n->params.sriov_max_vfs;
+
+ if (pci_is_vf(&n->parent_obj)) {
+ cntlid = le16_to_cpu(sctrl->scid);
+ } else {
+ for (cntlid = 0; cntlid < ARRAY_SIZE(subsys->ctrls); cntlid++) {
+ if (!subsys->ctrls[cntlid]) {
+ break;
+ }
+ }
+
+ if (cntlid == ARRAY_SIZE(subsys->ctrls)) {
+ error_setg(errp, "no more free controller id");
+ return -1;
+ }
+
+ num_rsvd = nvme_subsys_reserve_cntlids(n, cntlid + 1, num_vfs);
+ if (num_rsvd != num_vfs) {
+ nvme_subsys_unreserve_cntlids(n);
+ error_setg(errp,
+ "no more free controller ids for secondary controllers");
+ return -1;
+ }
}
if (!subsys->serial) {
@@ -48,7 +99,13 @@ int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp)
void nvme_subsys_unregister_ctrl(NvmeSubsystem *subsys, NvmeCtrl *n)
{
- subsys->ctrls[n->cntlid] = NULL;
+ if (pci_is_vf(&n->parent_obj)) {
+ subsys->ctrls[n->cntlid] = SUBSYS_SLOT_RSVD;
+ } else {
+ subsys->ctrls[n->cntlid] = NULL;
+ nvme_subsys_unreserve_cntlids(n);
+ }
+
n->cntlid = -1;
}
diff --git a/hw/nvme/trace-events b/hw/nvme/trace-events
index 1834b17..889bbb3 100644
--- a/hw/nvme/trace-events
+++ b/hw/nvme/trace-events
@@ -57,6 +57,7 @@ pci_nvme_identify_ctrl_csi(uint8_t csi) "identify controller, csi=0x%"PRIx8""
pci_nvme_identify_ns(uint32_t ns) "nsid %"PRIu32""
pci_nvme_identify_ctrl_list(uint8_t cns, uint16_t cntid) "cns 0x%"PRIx8" cntid %"PRIu16""
pci_nvme_identify_pri_ctrl_cap(uint16_t cntlid) "identify primary controller capabilities cntlid=%"PRIu16""
+pci_nvme_identify_sec_ctrl_list(uint16_t cntlid, uint8_t numcntl) "identify secondary controller list cntlid=%"PRIu16" numcntl=%"PRIu8""
pci_nvme_identify_ns_csi(uint32_t ns, uint8_t csi) "nsid=%"PRIu32", csi=0x%"PRIx8""
pci_nvme_identify_nslist(uint32_t ns) "nsid %"PRIu32""
pci_nvme_identify_nslist_csi(uint16_t ns, uint8_t csi) "nsid=%"PRIu16", csi=0x%"PRIx8""
generated by cgit v1.1 at 2024-07-20 16:30:08 +0000