From e955b37a28ff1f10035dc9c96a083bf93e8ca895 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Wed, 7 Aug 2013 09:22:46 +0200
Subject: [PATCH 15/28] xhci: add xhci_alloc_epctx

RH-Author: Gerd Hoffmann <kraxel@redhat.com>
Message-id: <1375867368-18979-4-git-send-email-kraxel@redhat.com>
Patchwork-id: 53036
O-Subject: [RHEL-7 qemu-kvm PATCH 3/5] xhci: add xhci_alloc_epctx
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>

Factor out endpoint context allocation to a separate function.
xhci live migration will need that too, in post_load.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 492b21f63fa655e0271abef4784cc337dd1d3fe7)
---
 hw/usb/hcd-xhci.c |   32 +++++++++++++++++++++-----------
 1 file changed, 21 insertions(+), 11 deletions(-)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/usb/hcd-xhci.c |   32 +++++++++++++++++++++-----------
 1 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 4111e68..7f46ccc 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -1198,6 +1198,26 @@ static void xhci_ep_kick_timer(void *opaque)
     xhci_kick_ep(epctx->xhci, epctx->slotid, epctx->epid, 0);
 }
 
+static XHCIEPContext *xhci_alloc_epctx(XHCIState *xhci,
+                                       unsigned int slotid,
+                                       unsigned int epid)
+{
+    XHCIEPContext *epctx;
+    int i;
+
+    epctx = g_new0(XHCIEPContext, 1);
+    epctx->xhci = xhci;
+    epctx->slotid = slotid;
+    epctx->epid = epid;
+
+    for (i = 0; i < ARRAY_SIZE(epctx->transfers); i++) {
+        usb_packet_init(&epctx->transfers[i].packet);
+    }
+    epctx->kick_timer = qemu_new_timer_ns(vm_clock, xhci_ep_kick_timer, epctx);
+
+    return epctx;
+}
+
 static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
                                unsigned int epid, dma_addr_t pctx,
                                uint32_t *ctx)
@@ -1205,7 +1225,6 @@ static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
     XHCISlot *slot;
     XHCIEPContext *epctx;
     dma_addr_t dequeue;
-    int i;
 
     trace_usb_xhci_ep_enable(slotid, epid);
     assert(slotid >= 1 && slotid <= xhci->numslots);
@@ -1216,12 +1235,7 @@ static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
         xhci_disable_ep(xhci, slotid, epid);
     }
 
-    epctx = g_malloc(sizeof(XHCIEPContext));
-    memset(epctx, 0, sizeof(XHCIEPContext));
-    epctx->xhci = xhci;
-    epctx->slotid = slotid;
-    epctx->epid = epid;
-
+    epctx = xhci_alloc_epctx(xhci, slotid, epid);
     slot->eps[epid-1] = epctx;
 
     dequeue = xhci_addr64(ctx[2] & ~0xf, ctx[3]);
@@ -1241,13 +1255,9 @@ static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
         xhci_ring_init(xhci, &epctx->ring, dequeue);
         epctx->ring.ccs = ctx[2] & 1;
     }
-    for (i = 0; i < ARRAY_SIZE(epctx->transfers); i++) {
-        usb_packet_init(&epctx->transfers[i].packet);
-    }
 
     epctx->interval = 1 << (ctx[0] >> 16) & 0xff;
     epctx->mfindex_last = 0;
-    epctx->kick_timer = qemu_new_timer_ns(vm_clock, xhci_ep_kick_timer, epctx);
 
     epctx->state = EP_RUNNING;
     ctx[0] &= ~EP_STATE_MASK;
-- 
1.7.1