From e07526dd14669081a569bb6b1e3d72e1ee59ebad Mon Sep 17 00:00:00 2001

From: Gerd Hoffmann <kraxel@redhat.com>

Date: Wed, 7 Aug 2013 09:22:48 +0200

Subject: [PATCH 17/28] xhci: add live migration support

RH-Author: Gerd Hoffmann <kraxel@redhat.com>

Message-id: <1375867368-18979-6-git-send-email-kraxel@redhat.com>

Patchwork-id: 53041

O-Subject: [RHEL-7 qemu-kvm PATCH 5/5] xhci: add live migration support

Bugzilla: 838170

RH-Acked-by: Hans de Goede <hdegoede@redhat.com>

RH-Acked-by: Laszlo Ersek <lersek@redhat.com>

RH-Acked-by: Orit Wasserman <owasserm@redhat.com>

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>

(cherry picked from commit 37352df30fbc38d1de464db8927536d5e36cf52a)

---

 hw/usb/hcd-xhci.c |  164 ++++++++++++++++++++++++++++++++++++++++++++++++++++-

 1 file changed, 163 insertions(+), 1 deletion(-)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>

---

 hw/usb/hcd-xhci.c |  164 ++++++++++++++++++++++++++++++++++++++++++++++++++++-

 1 files changed, 163 insertions(+), 1 deletions(-)

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c

index 8224465..3d3d6c3 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[] = {

-- 

1.7.1