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authorGerd Hoffmann <kraxel@redhat.com>2013-03-21 10:55:35 +0100
committerGerd Hoffmann <kraxel@redhat.com>2013-06-03 11:38:03 +0200
commit37352df30fbc38d1de464db8927536d5e36cf52a (patch)
treef35c996bfa249642cb80231712daaf365c3947cf /hw/usb
parent003e15a180373048f0c1f4df0bfe303746eb2676 (diff)
xhci: add live migration support
With all preparing pieces in place we can finally drop in the vmstate structs and the postload function. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb')
-rw-r--r--hw/usb/hcd-xhci.c164
1 files changed, 163 insertions, 1 deletions
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 9b90067d0c..91633edbc6 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -3386,9 +3386,171 @@ static int usb_xhci_initfn(struct PCIDevice *dev)
return 0;
}
+static int usb_xhci_post_load(void *opaque, int version_id)
+{
+ XHCIState *xhci = opaque;
+ XHCISlot *slot;
+ XHCIEPContext *epctx;
+ dma_addr_t dcbaap, pctx;
+ uint32_t slot_ctx[4];
+ uint32_t ep_ctx[5];
+ int slotid, epid, state, intr;
+
+ dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
+
+ for (slotid = 1; slotid <= xhci->numslots; slotid++) {
+ slot = &xhci->slots[slotid-1];
+ if (!slot->addressed) {
+ continue;
+ }
+ slot->ctx =
+ xhci_mask64(ldq_le_pci_dma(&xhci->pci_dev, dcbaap + 8*slotid));
+ xhci_dma_read_u32s(xhci, slot->ctx, slot_ctx, sizeof(slot_ctx));
+ slot->uport = xhci_lookup_uport(xhci, slot_ctx);
+ assert(slot->uport && slot->uport->dev);
+
+ for (epid = 1; epid <= 32; epid++) {
+ pctx = slot->ctx + 32 * epid;
+ xhci_dma_read_u32s(xhci, pctx, ep_ctx, sizeof(ep_ctx));
+ state = ep_ctx[0] & EP_STATE_MASK;
+ if (state == EP_DISABLED) {
+ continue;
+ }
+ epctx = xhci_alloc_epctx(xhci, slotid, epid);
+ slot->eps[epid-1] = epctx;
+ xhci_init_epctx(epctx, pctx, ep_ctx);
+ epctx->state = state;
+ if (state == EP_RUNNING) {
+ /* kick endpoint after vmload is finished */
+ qemu_mod_timer(epctx->kick_timer, qemu_get_clock_ns(vm_clock));
+ }
+ }
+ }
+
+ for (intr = 0; intr < xhci->numintrs; intr++) {
+ if (xhci->intr[intr].msix_used) {
+ msix_vector_use(&xhci->pci_dev, intr);
+ } else {
+ msix_vector_unuse(&xhci->pci_dev, intr);
+ }
+ }
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_xhci_ring = {
+ .name = "xhci-ring",
+ .version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT64(dequeue, XHCIRing),
+ VMSTATE_BOOL(ccs, XHCIRing),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_xhci_port = {
+ .name = "xhci-port",
+ .version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(portsc, XHCIPort),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_xhci_slot = {
+ .name = "xhci-slot",
+ .version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_BOOL(enabled, XHCISlot),
+ VMSTATE_BOOL(addressed, XHCISlot),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_xhci_event = {
+ .name = "xhci-event",
+ .version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(type, XHCIEvent),
+ VMSTATE_UINT32(ccode, XHCIEvent),
+ VMSTATE_UINT64(ptr, XHCIEvent),
+ VMSTATE_UINT32(length, XHCIEvent),
+ VMSTATE_UINT32(flags, XHCIEvent),
+ VMSTATE_UINT8(slotid, XHCIEvent),
+ VMSTATE_UINT8(epid, XHCIEvent),
+ }
+};
+
+static bool xhci_er_full(void *opaque, int version_id)
+{
+ struct XHCIInterrupter *intr = opaque;
+ return intr->er_full;
+}
+
+static const VMStateDescription vmstate_xhci_intr = {
+ .name = "xhci-intr",
+ .version_id = 1,
+ .fields = (VMStateField[]) {
+ /* registers */
+ VMSTATE_UINT32(iman, XHCIInterrupter),
+ VMSTATE_UINT32(imod, XHCIInterrupter),
+ VMSTATE_UINT32(erstsz, XHCIInterrupter),
+ VMSTATE_UINT32(erstba_low, XHCIInterrupter),
+ VMSTATE_UINT32(erstba_high, XHCIInterrupter),
+ VMSTATE_UINT32(erdp_low, XHCIInterrupter),
+ VMSTATE_UINT32(erdp_high, XHCIInterrupter),
+
+ /* state */
+ VMSTATE_BOOL(msix_used, XHCIInterrupter),
+ VMSTATE_BOOL(er_pcs, XHCIInterrupter),
+ VMSTATE_UINT64(er_start, XHCIInterrupter),
+ VMSTATE_UINT32(er_size, XHCIInterrupter),
+ VMSTATE_UINT32(er_ep_idx, XHCIInterrupter),
+
+ /* event queue (used if ring is full) */
+ VMSTATE_BOOL(er_full, XHCIInterrupter),
+ VMSTATE_UINT32_TEST(ev_buffer_put, XHCIInterrupter, xhci_er_full),
+ VMSTATE_UINT32_TEST(ev_buffer_get, XHCIInterrupter, xhci_er_full),
+ VMSTATE_STRUCT_ARRAY_TEST(ev_buffer, XHCIInterrupter, EV_QUEUE,
+ xhci_er_full, 1,
+ vmstate_xhci_event, XHCIEvent),
+
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static const VMStateDescription vmstate_xhci = {
.name = "xhci",
- .unmigratable = 1,
+ .version_id = 1,
+ .post_load = usb_xhci_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_PCIE_DEVICE(pci_dev, XHCIState),
+ VMSTATE_MSIX(pci_dev, XHCIState),
+
+ VMSTATE_STRUCT_VARRAY_UINT32(ports, XHCIState, numports, 1,
+ vmstate_xhci_port, XHCIPort),
+ VMSTATE_STRUCT_VARRAY_UINT32(slots, XHCIState, numslots, 1,
+ vmstate_xhci_slot, XHCISlot),
+ VMSTATE_STRUCT_VARRAY_UINT32(intr, XHCIState, numintrs, 1,
+ vmstate_xhci_intr, XHCIInterrupter),
+
+ /* Operational Registers */
+ VMSTATE_UINT32(usbcmd, XHCIState),
+ VMSTATE_UINT32(usbsts, XHCIState),
+ VMSTATE_UINT32(dnctrl, XHCIState),
+ VMSTATE_UINT32(crcr_low, XHCIState),
+ VMSTATE_UINT32(crcr_high, XHCIState),
+ VMSTATE_UINT32(dcbaap_low, XHCIState),
+ VMSTATE_UINT32(dcbaap_high, XHCIState),
+ VMSTATE_UINT32(config, XHCIState),
+
+ /* Runtime Registers & state */
+ VMSTATE_INT64(mfindex_start, XHCIState),
+ VMSTATE_TIMER(mfwrap_timer, XHCIState),
+ VMSTATE_STRUCT(cmd_ring, XHCIState, 1, vmstate_xhci_ring, XHCIRing),
+
+ VMSTATE_END_OF_LIST()
+ }
};
static Property xhci_properties[] = {