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Blame SOURCES/kvm-usb-hcd-xhci-Report-completion-of-active-transfer-wi.patch

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From 356cd0ad58931df9374324eeceff760a6310db27 Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Fri, 11 Jul 2014 14:20:50 +0200
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Subject: [PATCH 16/43] usb-hcd-xhci: Report completion of active transfer with
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 CC_STOPPED on ep stop
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Message-id: <1405088470-24115-18-git-send-email-kraxel@redhat.com>
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Patchwork-id: 59832
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O-Subject: [RHEL-7.1 qemu-kvm PATCH 17/37] usb-hcd-xhci: Report completion of active transfer with CC_STOPPED on ep stop
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Bugzilla: 980747
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RH-Acked-by: Dr. David Alan Gilbert (git) <dgilbert@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
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As we should per the XHCI spec "4.6.9 Stop Endpoint".
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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(cherry picked from commit 582d6f4aba0ff24604a82b48aee2db17b100d4b4)
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---
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 hw/usb/hcd-xhci.c | 26 ++++++++++++++++++--------
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 1 file changed, 18 insertions(+), 8 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 hw/usb/hcd-xhci.c | 26 ++++++++++++++++++--------
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 1 file changed, 18 insertions(+), 8 deletions(-)
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diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
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index 3b4cd01..fc3b330 100644
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--- a/hw/usb/hcd-xhci.c
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+++ b/hw/usb/hcd-xhci.c
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@@ -507,6 +507,7 @@ static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
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                          unsigned int epid, unsigned int streamid);
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 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
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                                 unsigned int epid);
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+static void xhci_xfer_report(XHCITransfer *xfer);
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 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v);
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 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v);
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 static USBEndpoint *xhci_epid_to_usbep(XHCIState *xhci,
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@@ -1304,10 +1305,15 @@ static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
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     return CC_SUCCESS;
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 }
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-static int xhci_ep_nuke_one_xfer(XHCITransfer *t)
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+static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report)
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 {
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     int killed = 0;
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+    if (report && (t->running_async || t->running_retry)) {
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+        t->status = report;
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+        xhci_xfer_report(t);
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+    }
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+
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     if (t->running_async) {
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         usb_cancel_packet(&t->packet);
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         t->running_async = 0;
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@@ -1320,6 +1326,7 @@ static int xhci_ep_nuke_one_xfer(XHCITransfer *t)
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             qemu_del_timer(epctx->kick_timer);
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         }
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         t->running_retry = 0;
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+        killed = 1;
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     }
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     if (t->trbs) {
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         g_free(t->trbs);
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@@ -1332,7 +1339,7 @@ static int xhci_ep_nuke_one_xfer(XHCITransfer *t)
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 }
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 static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
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-                               unsigned int epid)
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+                               unsigned int epid, TRBCCode report)
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 {
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     XHCISlot *slot;
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     XHCIEPContext *epctx;
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@@ -1353,7 +1360,10 @@ static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
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     xferi = epctx->next_xfer;
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     for (i = 0; i < TD_QUEUE; i++) {
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-        killed += xhci_ep_nuke_one_xfer(&epctx->transfers[xferi]);
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+        killed += xhci_ep_nuke_one_xfer(&epctx->transfers[xferi], report);
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+        if (killed) {
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+            report = 0; /* Only report once */
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+        }
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         epctx->transfers[xferi].packet.ep = NULL;
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         xferi = (xferi + 1) % TD_QUEUE;
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     }
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@@ -1383,7 +1393,7 @@ static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
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         return CC_SUCCESS;
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     }
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-    xhci_ep_nuke_xfers(xhci, slotid, epid);
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+    xhci_ep_nuke_xfers(xhci, slotid, epid, 0);
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     epctx = slot->eps[epid-1];
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@@ -1425,7 +1435,7 @@ static TRBCCode xhci_stop_ep(XHCIState *xhci, unsigned int slotid,
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         return CC_EP_NOT_ENABLED_ERROR;
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     }
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-    if (xhci_ep_nuke_xfers(xhci, slotid, epid) > 0) {
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+    if (xhci_ep_nuke_xfers(xhci, slotid, epid, CC_STOPPED) > 0) {
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         fprintf(stderr, "xhci: FIXME: endpoint stopped w/ xfers running, "
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                 "data might be lost\n");
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     }
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@@ -1470,7 +1480,7 @@ static TRBCCode xhci_reset_ep(XHCIState *xhci, unsigned int slotid,
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         return CC_CONTEXT_STATE_ERROR;
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     }
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-    if (xhci_ep_nuke_xfers(xhci, slotid, epid) > 0) {
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+    if (xhci_ep_nuke_xfers(xhci, slotid, epid, 0) > 0) {
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         fprintf(stderr, "xhci: FIXME: endpoint reset w/ xfers running, "
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                 "data might be lost\n");
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     }
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@@ -2463,7 +2473,7 @@ static void xhci_detach_slot(XHCIState *xhci, USBPort *uport)
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     for (ep = 0; ep < 31; ep++) {
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         if (xhci->slots[slot].eps[ep]) {
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-            xhci_ep_nuke_xfers(xhci, slot+1, ep+1);
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+            xhci_ep_nuke_xfers(xhci, slot + 1, ep + 1, 0);
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         }
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     }
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     xhci->slots[slot].uport = NULL;
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@@ -3286,7 +3296,7 @@ static void xhci_complete(USBPort *port, USBPacket *packet)
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     XHCITransfer *xfer = container_of(packet, XHCITransfer, packet);
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     if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
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-        xhci_ep_nuke_one_xfer(xfer);
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+        xhci_ep_nuke_one_xfer(xfer, 0);
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         return;
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     }
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     xhci_complete_packet(xfer);
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-- 
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1.8.3.1
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