msix_notify(&proxy->pci_dev, vector);
else {
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
- pci_set_irq(&proxy->pci_dev, vdev->isr & 1);
+ pci_set_irq(&proxy->pci_dev, atomic_read(&vdev->isr) & 1);
}
}
return 0;
}
-static bool virtio_pci_ioeventfd_started(DeviceState *d)
+static bool virtio_pci_ioeventfd_enabled(DeviceState *d)
{
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
- return proxy->ioeventfd_started;
+ return (proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) != 0;
}
-static void virtio_pci_ioeventfd_set_started(DeviceState *d, bool started,
- bool err)
-{
- VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
-
- proxy->ioeventfd_started = started;
-}
-
-static bool virtio_pci_ioeventfd_disabled(DeviceState *d)
-{
- VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
-
- return proxy->ioeventfd_disabled ||
- !(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD);
-}
+#define QEMU_VIRTIO_PCI_QUEUE_MEM_MULT 0x1000
-static void virtio_pci_ioeventfd_set_disabled(DeviceState *d, bool disabled)
+static inline int virtio_pci_queue_mem_mult(struct VirtIOPCIProxy *proxy)
{
- VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
-
- proxy->ioeventfd_disabled = disabled;
+ return (proxy->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ) ?
+ QEMU_VIRTIO_PCI_QUEUE_MEM_MULT : 4;
}
-#define QEMU_VIRTIO_PCI_QUEUE_MEM_MULT 0x1000
-
static int virtio_pci_ioeventfd_assign(DeviceState *d, EventNotifier *notifier,
int n, bool assign)
{
MemoryRegion *modern_mr = &proxy->notify.mr;
MemoryRegion *modern_notify_mr = &proxy->notify_pio.mr;
MemoryRegion *legacy_mr = &proxy->bar;
- hwaddr modern_addr = QEMU_VIRTIO_PCI_QUEUE_MEM_MULT *
+ hwaddr modern_addr = virtio_pci_queue_mem_mult(proxy) *
virtio_get_queue_index(vq);
hwaddr legacy_addr = VIRTIO_PCI_QUEUE_NOTIFY;
break;
case VIRTIO_PCI_ISR:
/* reading from the ISR also clears it. */
- ret = vdev->isr;
- vdev->isr = 0;
+ ret = atomic_xchg(&vdev->isr, 0);
pci_irq_deassert(&proxy->pci_dev);
break;
case VIRTIO_MSI_CONFIG_VECTOR:
return proxy->nvectors;
}
+static AddressSpace *virtio_pci_get_dma_as(DeviceState *d)
+{
+ VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
+ PCIDevice *dev = &proxy->pci_dev;
+
+ return pci_get_address_space(dev);
+}
+
static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
struct virtio_pci_cap *cap)
{
break;
case VIRTIO_PCI_COMMON_DF:
if (proxy->dfselect <= 1) {
- val = (vdev->host_features & ~VIRTIO_LEGACY_FEATURES) >>
+ VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
+
+ val = (vdev->host_features & ~vdc->legacy_features) >>
(32 * proxy->dfselect);
}
break;
uint64_t val, unsigned size)
{
VirtIODevice *vdev = opaque;
- unsigned queue = addr / QEMU_VIRTIO_PCI_QUEUE_MEM_MULT;
+ VirtIOPCIProxy *proxy = VIRTIO_PCI(DEVICE(vdev)->parent_bus->parent);
+ unsigned queue = addr / virtio_pci_queue_mem_mult(proxy);
if (queue < VIRTIO_QUEUE_MAX) {
virtio_queue_notify(vdev, queue);
{
VirtIOPCIProxy *proxy = opaque;
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
- uint64_t val = vdev->isr;
-
- vdev->isr = 0;
+ uint64_t val = atomic_xchg(&vdev->isr, 0);
pci_irq_deassert(&proxy->pci_dev);
return val;
struct virtio_pci_cap *cap)
{
virtio_pci_modern_region_map(proxy, region, cap,
- &proxy->modern_bar, proxy->modern_mem_bar);
+ &proxy->modern_bar, proxy->modern_mem_bar_idx);
}
static void virtio_pci_modern_io_region_map(VirtIOPCIProxy *proxy,
struct virtio_pci_cap *cap)
{
virtio_pci_modern_region_map(proxy, region, cap,
- &proxy->io_bar, proxy->modern_io_bar);
+ &proxy->io_bar, proxy->modern_io_bar_idx);
}
static void virtio_pci_modern_mem_region_unmap(VirtIOPCIProxy *proxy,
®ion->mr);
}
+static void virtio_pci_pre_plugged(DeviceState *d, Error **errp)
+{
+ VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
+ VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
+
+ if (virtio_pci_modern(proxy)) {
+ virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
+ }
+
+ virtio_add_feature(&vdev->host_features, VIRTIO_F_BAD_FEATURE);
+}
+
/* This is called by virtio-bus just after the device is plugged. */
static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
{
VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
VirtioBusState *bus = &proxy->bus;
bool legacy = virtio_pci_legacy(proxy);
- bool modern = virtio_pci_modern(proxy);
+ bool modern;
bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
uint8_t *config;
uint32_t size;
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
+ /*
+ * Virtio capabilities present without
+ * VIRTIO_F_VERSION_1 confuses guests
+ */
+ if (!proxy->ignore_backend_features &&
+ !virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
+ virtio_pci_disable_modern(proxy);
+
+ if (!legacy) {
+ error_setg(errp, "Device doesn't support modern mode, and legacy"
+ " mode is disabled");
+ error_append_hint(errp, "Set disable-legacy to off\n");
+
+ return;
+ }
+ }
+
+ modern = virtio_pci_modern(proxy);
+
config = proxy->pci_dev.config;
if (proxy->class_code) {
pci_config_set_class(config, proxy->class_code);
}
if (legacy) {
+ if (virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM)) {
+ error_setg(errp, "VIRTIO_F_IOMMU_PLATFORM was supported by"
+ "neither legacy nor transitional device.");
+ return ;
+ }
/* legacy and transitional */
pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID,
pci_get_word(config + PCI_VENDOR_ID));
struct virtio_pci_notify_cap notify = {
.cap.cap_len = sizeof notify,
.notify_off_multiplier =
- cpu_to_le32(QEMU_VIRTIO_PCI_QUEUE_MEM_MULT),
+ cpu_to_le32(virtio_pci_queue_mem_mult(proxy)),
};
struct virtio_pci_cfg_cap cfg = {
.cap.cap_len = sizeof cfg,
struct virtio_pci_cfg_cap *cfg_mask;
- virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
virtio_pci_modern_regions_init(proxy);
virtio_pci_modern_mem_region_map(proxy, &proxy->common, &cap);
memory_region_init(&proxy->io_bar, OBJECT(proxy),
"virtio-pci-io", 0x4);
- pci_register_bar(&proxy->pci_dev, proxy->modern_io_bar,
+ pci_register_bar(&proxy->pci_dev, proxy->modern_io_bar_idx,
PCI_BASE_ADDRESS_SPACE_IO, &proxy->io_bar);
virtio_pci_modern_io_region_map(proxy, &proxy->notify_pio,
¬ify_pio.cap);
}
- pci_register_bar(&proxy->pci_dev, proxy->modern_mem_bar,
+ pci_register_bar(&proxy->pci_dev, proxy->modern_mem_bar_idx,
PCI_BASE_ADDRESS_SPACE_MEMORY |
PCI_BASE_ADDRESS_MEM_PREFETCH |
PCI_BASE_ADDRESS_MEM_TYPE_64,
if (proxy->nvectors) {
int err = msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors,
- proxy->msix_bar);
+ proxy->msix_bar_idx);
if (err) {
/* Notice when a system that supports MSIx can't initialize it. */
if (err != -ENOTSUP) {
&virtio_pci_config_ops,
proxy, "virtio-pci", size);
- pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar,
+ pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar_idx,
PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar);
}
-
- if (!kvm_has_many_ioeventfds()) {
- proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
- }
-
- virtio_add_feature(&vdev->host_features, VIRTIO_F_BAD_FEATURE);
}
static void virtio_pci_device_unplugged(DeviceState *d)
bool pcie_port = pci_bus_is_express(pci_dev->bus) &&
!pci_bus_is_root(pci_dev->bus);
+ if (!kvm_has_many_ioeventfds()) {
+ proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
+ }
+
/*
* virtio pci bar layout used by default.
* subclasses can re-arrange things if needed.
* region 4+5 -- virtio modern memory (64bit) bar
*
*/
- proxy->legacy_io_bar = 0;
- proxy->msix_bar = 1;
- proxy->modern_io_bar = 2;
- proxy->modern_mem_bar = 4;
+ proxy->legacy_io_bar_idx = 0;
+ proxy->msix_bar_idx = 1;
+ proxy->modern_io_bar_idx = 2;
+ proxy->modern_mem_bar_idx = 4;
proxy->common.offset = 0x0;
proxy->common.size = 0x1000;
proxy->device.type = VIRTIO_PCI_CAP_DEVICE_CFG;
proxy->notify.offset = 0x3000;
- proxy->notify.size =
- QEMU_VIRTIO_PCI_QUEUE_MEM_MULT * VIRTIO_QUEUE_MAX;
+ proxy->notify.size = virtio_pci_queue_mem_mult(proxy) * VIRTIO_QUEUE_MAX;
proxy->notify.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
proxy->notify_pio.offset = 0x0;
/* subclasses can enforce modern, so do this unconditionally */
memory_region_init(&proxy->modern_bar, OBJECT(proxy), "virtio-pci",
- 2 * QEMU_VIRTIO_PCI_QUEUE_MEM_MULT *
- VIRTIO_QUEUE_MAX);
+ /* PCI BAR regions must be powers of 2 */
+ pow2ceil(proxy->notify.offset + proxy->notify.size));
memory_region_init_alias(&proxy->modern_cfg,
OBJECT(proxy),
proxy->disable_legacy = pcie_port ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
}
+ if (!virtio_pci_modern(proxy) && !virtio_pci_legacy(proxy)) {
+ error_setg(errp, "device cannot work as neither modern nor legacy mode"
+ " is enabled");
+ error_append_hint(errp, "Set either disable-modern or disable-legacy"
+ " to off\n");
+ return;
+ }
+
if (pcie_port && pci_is_express(pci_dev)) {
int pos;
* PCI Power Management Interface Specification.
*/
pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3);
+
+ if (proxy->flags & VIRTIO_PCI_FLAG_ATS) {
+ pcie_ats_init(pci_dev, 256);
+ }
+
} else {
/*
* make future invocations of pci_is_express() return false
VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, false),
DEFINE_PROP_BIT("x-disable-pcie", VirtIOPCIProxy, flags,
VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT, false),
+ DEFINE_PROP_BIT("page-per-vq", VirtIOPCIProxy, flags,
+ VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT, false),
+ DEFINE_PROP_BOOL("x-ignore-backend-features", VirtIOPCIProxy,
+ ignore_backend_features, false),
+ DEFINE_PROP_BIT("ats", VirtIOPCIProxy, flags,
+ VIRTIO_PCI_FLAG_ATS_BIT, false),
DEFINE_PROP_END_OF_LIST(),
};
};
#endif
+/* vhost-vsock-pci */
+
+#ifdef CONFIG_VHOST_VSOCK
+static Property vhost_vsock_pci_properties[] = {
+ DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+ VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev);
+ DeviceState *vdev = DEVICE(&dev->vdev);
+
+ qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+ object_property_set_bool(OBJECT(vdev), true, "realized", errp);
+}
+
+static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+ PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+ k->realize = vhost_vsock_pci_realize;
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ dc->props = vhost_vsock_pci_properties;
+ pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+ pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
+ pcidev_k->revision = 0x00;
+ pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
+}
+
+static void vhost_vsock_pci_instance_init(Object *obj)
+{
+ VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj);
+
+ virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
+ TYPE_VHOST_VSOCK);
+}
+
+static const TypeInfo vhost_vsock_pci_info = {
+ .name = TYPE_VHOST_VSOCK_PCI,
+ .parent = TYPE_VIRTIO_PCI,
+ .instance_size = sizeof(VHostVSockPCI),
+ .instance_init = vhost_vsock_pci_instance_init,
+ .class_init = vhost_vsock_pci_class_init,
+};
+#endif
+
/* virtio-balloon-pci */
static Property virtio_balloon_pci_properties[] = {
k->query_guest_notifiers = virtio_pci_query_guest_notifiers;
k->set_guest_notifiers = virtio_pci_set_guest_notifiers;
k->vmstate_change = virtio_pci_vmstate_change;
+ k->pre_plugged = virtio_pci_pre_plugged;
k->device_plugged = virtio_pci_device_plugged;
k->device_unplugged = virtio_pci_device_unplugged;
k->query_nvectors = virtio_pci_query_nvectors;
- k->ioeventfd_started = virtio_pci_ioeventfd_started;
- k->ioeventfd_set_started = virtio_pci_ioeventfd_set_started;
- k->ioeventfd_disabled = virtio_pci_ioeventfd_disabled;
- k->ioeventfd_set_disabled = virtio_pci_ioeventfd_set_disabled;
+ k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled;
k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
+ k->get_dma_as = virtio_pci_get_dma_as;
}
static const TypeInfo virtio_pci_bus_info = {
#ifdef CONFIG_VHOST_SCSI
type_register_static(&vhost_scsi_pci_info);
#endif
+#ifdef CONFIG_VHOST_VSOCK
+ type_register_static(&vhost_vsock_pci_info);
+#endif
}
type_init(virtio_pci_register_types)
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