Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio, pci: fixes

More fixes missed in the previous pull request.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 16 Mar 2017 02:29:49 GMT
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  virtio-serial-bus: Delete timer from list before free it
  hw/virtio: fix Power Management Control Register for PCI Express virtio devices
  hw/virtio: fix Link Control Register for PCI Express virtio devices
  hw/virtio: fix error enabling flags in Device Control register
  hw/pcie: fix Extended Configuration Space for devices with no Extended Capabilities

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5 files changed, 66 insertions, 0 deletions

diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c
index d544cd91c0..d797a6796e 100644
--- a/hw/char/virtio-serial-bus.c
+++ b/hw/char/virtio-serial-bus.c
@@ -724,6 +724,7 @@ static void virtio_serial_post_load_timer_cb(void *opaque)
         }
     }
     g_free(s->post_load->connected);
+    timer_del(s->post_load->timer);
     timer_free(s->post_load->timer);
     g_free(s->post_load);
     s->post_load = NULL;
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index ad46390ec5..e6b08e1988 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -64,6 +64,8 @@ static Property pci_props[] = {
                     QEMU_PCI_CAP_SERR_BITNR, true),
     DEFINE_PROP_BIT("x-pcie-lnksta-dllla", PCIDevice, cap_present,
                     QEMU_PCIE_LNKSTA_DLLLA_BITNR, true),
+    DEFINE_PROP_BIT("x-pcie-extcap-init", PCIDevice, cap_present,
+                    QEMU_PCIE_EXTCAP_INIT_BITNR, true),
     DEFINE_PROP_END_OF_LIST()
 };
 
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index fc54bfd53d..18e634f577 100644
--- a/hw/pci/pcie.c
+++ b/hw/pci/pcie.c
@@ -109,6 +109,12 @@ int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port)
                  PCI_EXP_DEVCAP2_EFF | PCI_EXP_DEVCAP2_EETLPP);
 
     pci_set_word(dev->wmask + pos + PCI_EXP_DEVCTL2, PCI_EXP_DEVCTL2_EETLPPB);
+
+    if (dev->cap_present & QEMU_PCIE_EXTCAP_INIT) {
+        /* read-only to behave like a 'NULL' Extended Capability Header */
+        pci_set_long(dev->wmask + PCI_CONFIG_SPACE_SIZE, 0);
+    }
+
     return pos;
 }
 
@@ -217,6 +223,20 @@ void pcie_cap_deverr_reset(PCIDevice *dev)
                                  PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE);
 }
 
+void pcie_cap_lnkctl_init(PCIDevice *dev)
+{
+    uint32_t pos = dev->exp.exp_cap;
+    pci_long_test_and_set_mask(dev->wmask + pos + PCI_EXP_LNKCTL,
+                               PCI_EXP_LNKCTL_CCC | PCI_EXP_LNKCTL_ES);
+}
+
+void pcie_cap_lnkctl_reset(PCIDevice *dev)
+{
+    uint8_t *lnkctl = dev->config + dev->exp.exp_cap + PCI_EXP_LNKCTL;
+    pci_long_test_and_clear_mask(lnkctl,
+                                 PCI_EXP_LNKCTL_CCC | PCI_EXP_LNKCTL_ES);
+}
+
 static void hotplug_event_update_event_status(PCIDevice *dev)
 {
     uint32_t pos = dev->exp.exp_cap;
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 69cc471e56..f9b7244808 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1812,6 +1812,7 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
 
         pos = pci_add_capability(pci_dev, PCI_CAP_ID_PM, 0, PCI_PM_SIZEOF);
         assert(pos > 0);
+        pci_dev->exp.pm_cap = pos;
 
         /*
          * Indicates that this function complies with revision 1.2 of the
@@ -1819,6 +1820,22 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
          */
         pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3);
 
+        if (proxy->flags & VIRTIO_PCI_FLAG_INIT_DEVERR) {
+            /* Init error enabling flags */
+            pcie_cap_deverr_init(pci_dev);
+        }
+
+        if (proxy->flags & VIRTIO_PCI_FLAG_INIT_LNKCTL) {
+            /* Init Link Control Register */
+            pcie_cap_lnkctl_init(pci_dev);
+        }
+
+        if (proxy->flags & VIRTIO_PCI_FLAG_INIT_PM) {
+            /* Init Power Management Control Register */
+            pci_set_word(pci_dev->wmask + pos + PCI_PM_CTRL,
+                         PCI_PM_CTRL_STATE_MASK);
+        }
+
         if (proxy->flags & VIRTIO_PCI_FLAG_ATS) {
             pcie_ats_init(pci_dev, 256);
         }
@@ -1849,6 +1866,7 @@ static void virtio_pci_reset(DeviceState *qdev)
 {
     VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
     VirtioBusState *bus = VIRTIO_BUS(&proxy->bus);
+    PCIDevice *dev = PCI_DEVICE(qdev);
     int i;
 
     virtio_pci_stop_ioeventfd(proxy);
@@ -1862,6 +1880,13 @@ static void virtio_pci_reset(DeviceState *qdev)
         proxy->vqs[i].avail[0] = proxy->vqs[i].avail[1] = 0;
         proxy->vqs[i].used[0] = proxy->vqs[i].used[1] = 0;
     }
+
+    if (pci_is_express(dev)) {
+        pcie_cap_deverr_reset(dev);
+        pcie_cap_lnkctl_reset(dev);
+
+        pci_set_word(dev->config + dev->exp.pm_cap + PCI_PM_CTRL, 0);
+    }
 }
 
 static Property virtio_pci_properties[] = {
@@ -1882,6 +1907,12 @@ static Property virtio_pci_properties[] = {
                      ignore_backend_features, false),
     DEFINE_PROP_BIT("ats", VirtIOPCIProxy, flags,
                     VIRTIO_PCI_FLAG_ATS_BIT, false),
+    DEFINE_PROP_BIT("x-pcie-deverr-init", VirtIOPCIProxy, flags,
+                    VIRTIO_PCI_FLAG_INIT_DEVERR_BIT, true),
+    DEFINE_PROP_BIT("x-pcie-lnkctl-init", VirtIOPCIProxy, flags,
+                    VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT, true),
+    DEFINE_PROP_BIT("x-pcie-pm-init", VirtIOPCIProxy, flags,
+                    VIRTIO_PCI_FLAG_INIT_PM_BIT, true),
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index d00064cc0c..b095dfc6d9 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -73,6 +73,9 @@ enum {
     VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT,
     VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT,
     VIRTIO_PCI_FLAG_ATS_BIT,
+    VIRTIO_PCI_FLAG_INIT_DEVERR_BIT,
+    VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT,
+    VIRTIO_PCI_FLAG_INIT_PM_BIT,
 };
 
 /* Need to activate work-arounds for buggy guests at vmstate load. */
@@ -100,6 +103,15 @@ enum {
 /* address space translation service */
 #define VIRTIO_PCI_FLAG_ATS (1 << VIRTIO_PCI_FLAG_ATS_BIT)
 
+/* Init error enabling flags */
+#define VIRTIO_PCI_FLAG_INIT_DEVERR (1 << VIRTIO_PCI_FLAG_INIT_DEVERR_BIT)
+
+/* Init Link Control register */
+#define VIRTIO_PCI_FLAG_INIT_LNKCTL (1 << VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT)
+
+/* Init Power Management */
+#define VIRTIO_PCI_FLAG_INIT_PM (1 << VIRTIO_PCI_FLAG_INIT_PM_BIT)
+
 typedef struct {
     MSIMessage msg;
     int virq;