#include "virtio-net.h"
#include "virtio-serial.h"
#include "virtio-scsi.h"
-#include "pci.h"
+#include "pci/pci.h"
#include "qemu-error.h"
-#include "msi.h"
-#include "msix.h"
+#include "pci/msi.h"
+#include "pci/msix.h"
#include "net.h"
#include "loader.h"
#include "kvm.h"
if (ret) {
return ret;
}
+ msix_unuse_all_vectors(&proxy->pci_dev);
msix_load(&proxy->pci_dev, f);
if (msix_present(&proxy->pci_dev)) {
qemu_get_be16s(f, &proxy->vdev->config_vector);
}
static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy,
- int n, bool assign)
+ int n, bool assign, bool set_handler)
{
VirtQueue *vq = virtio_get_queue(proxy->vdev, n);
EventNotifier *notifier = virtio_queue_get_host_notifier(vq);
__func__, r);
return r;
}
- virtio_queue_set_host_notifier_fd_handler(vq, true);
+ virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler);
memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
true, n, notifier);
} else {
memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
true, n, notifier);
- virtio_queue_set_host_notifier_fd_handler(vq, false);
+ virtio_queue_set_host_notifier_fd_handler(vq, false, false);
event_notifier_cleanup(notifier);
}
return r;
continue;
}
- r = virtio_pci_set_host_notifier_internal(proxy, n, true);
+ r = virtio_pci_set_host_notifier_internal(proxy, n, true, true);
if (r < 0) {
goto assign_error;
}
continue;
}
- r = virtio_pci_set_host_notifier_internal(proxy, n, false);
+ r = virtio_pci_set_host_notifier_internal(proxy, n, false, false);
assert(r >= 0);
}
proxy->ioeventfd_started = false;
continue;
}
- r = virtio_pci_set_host_notifier_internal(proxy, n, false);
+ r = virtio_pci_set_host_notifier_internal(proxy, n, false, false);
assert(r >= 0);
}
proxy->ioeventfd_started = false;
VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev);
virtio_pci_stop_ioeventfd(proxy);
virtio_reset(proxy->vdev);
+ msix_unuse_all_vectors(&proxy->pci_dev);
proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG;
}
{
VirtIOPCIProxy *proxy = opaque;
VirtIODevice *vdev = proxy->vdev;
- target_phys_addr_t pa;
+ hwaddr pa;
switch (addr) {
case VIRTIO_PCI_GUEST_FEATURES:
virtio_set_features(vdev, val);
break;
case VIRTIO_PCI_QUEUE_PFN:
- pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
+ pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
if (pa == 0) {
virtio_pci_stop_ioeventfd(proxy);
virtio_reset(proxy->vdev);
return ret;
}
-static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr)
-{
- VirtIOPCIProxy *proxy = opaque;
- uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- if (addr < config)
- return virtio_ioport_read(proxy, addr);
- addr -= config;
- return virtio_config_readb(proxy->vdev, addr);
-}
-
-static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr)
-{
- VirtIOPCIProxy *proxy = opaque;
- uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- uint16_t val;
- if (addr < config)
- return virtio_ioport_read(proxy, addr);
- addr -= config;
- val = virtio_config_readw(proxy->vdev, addr);
- if (virtio_is_big_endian()) {
- /*
- * virtio is odd, ioports are LE but config space is target native
- * endian. However, in qemu, all PIO is LE, so we need to re-swap
- * on BE targets
- */
- val = bswap16(val);
- }
- return val;
-}
-
-static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr)
-{
- VirtIOPCIProxy *proxy = opaque;
- uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- uint32_t val;
- if (addr < config)
- return virtio_ioport_read(proxy, addr);
- addr -= config;
- val = virtio_config_readl(proxy->vdev, addr);
- if (virtio_is_big_endian()) {
- val = bswap32(val);
- }
- return val;
-}
-
-static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val)
+static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr,
+ unsigned size)
{
VirtIOPCIProxy *proxy = opaque;
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
+ uint64_t val = 0;
if (addr < config) {
- virtio_ioport_write(proxy, addr, val);
- return;
+ return virtio_ioport_read(proxy, addr);
}
addr -= config;
- virtio_config_writeb(proxy->vdev, addr, val);
-}
-static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val)
-{
- VirtIOPCIProxy *proxy = opaque;
- uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- if (addr < config) {
- virtio_ioport_write(proxy, addr, val);
- return;
- }
- addr -= config;
- if (virtio_is_big_endian()) {
- val = bswap16(val);
+ switch (size) {
+ case 1:
+ val = virtio_config_readb(proxy->vdev, addr);
+ break;
+ case 2:
+ val = virtio_config_readw(proxy->vdev, addr);
+ if (virtio_is_big_endian()) {
+ val = bswap16(val);
+ }
+ break;
+ case 4:
+ val = virtio_config_readl(proxy->vdev, addr);
+ if (virtio_is_big_endian()) {
+ val = bswap32(val);
+ }
+ break;
}
- virtio_config_writew(proxy->vdev, addr, val);
+ return val;
}
-static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val)
+static void virtio_pci_config_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
{
VirtIOPCIProxy *proxy = opaque;
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
return;
}
addr -= config;
- if (virtio_is_big_endian()) {
- val = bswap32(val);
+ /*
+ * Virtio-PCI is odd. Ioports are LE but config space is target native
+ * endian.
+ */
+ switch (size) {
+ case 1:
+ virtio_config_writeb(proxy->vdev, addr, val);
+ break;
+ case 2:
+ if (virtio_is_big_endian()) {
+ val = bswap16(val);
+ }
+ virtio_config_writew(proxy->vdev, addr, val);
+ break;
+ case 4:
+ if (virtio_is_big_endian()) {
+ val = bswap32(val);
+ }
+ virtio_config_writel(proxy->vdev, addr, val);
+ break;
}
- virtio_config_writel(proxy->vdev, addr, val);
}
-static const MemoryRegionPortio virtio_portio[] = {
- { 0, 0x10000, 1, .write = virtio_pci_config_writeb, },
- { 0, 0x10000, 2, .write = virtio_pci_config_writew, },
- { 0, 0x10000, 4, .write = virtio_pci_config_writel, },
- { 0, 0x10000, 1, .read = virtio_pci_config_readb, },
- { 0, 0x10000, 2, .read = virtio_pci_config_readw, },
- { 0, 0x10000, 4, .read = virtio_pci_config_readl, },
- PORTIO_END_OF_LIST()
-};
-
static const MemoryRegionOps virtio_pci_config_ops = {
- .old_portio = virtio_portio,
+ .read = virtio_pci_config_read,
+ .write = virtio_pci_config_write,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 4,
+ },
.endianness = DEVICE_LITTLE_ENDIAN,
};
}
irqfd->users++;
- ret = kvm_irqchip_add_irq_notifier(kvm_state, n, irqfd->virq);
+ ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, irqfd->virq);
if (ret < 0) {
if (--irqfd->users == 0) {
kvm_irqchip_release_virq(kvm_state, irqfd->virq);
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
int ret;
- ret = kvm_irqchip_remove_irq_notifier(kvm_state, n, irqfd->virq);
+ ret = kvm_irqchip_remove_irqfd_notifier(kvm_state, n, irqfd->virq);
assert(ret == 0);
if (--irqfd->users == 0) {
int r, n;
/* Must unset vector notifier while guest notifier is still assigned */
- if (kvm_irqchip_in_kernel() && !assign) {
+ if (kvm_msi_via_irqfd_enabled() && !assign) {
msix_unset_vector_notifiers(&proxy->pci_dev);
g_free(proxy->vector_irqfd);
proxy->vector_irqfd = NULL;
}
/* Must set vector notifier after guest notifier has been assigned */
- if (kvm_irqchip_in_kernel() && assign) {
+ if (kvm_msi_via_irqfd_enabled() && assign) {
proxy->vector_irqfd =
g_malloc0(sizeof(*proxy->vector_irqfd) *
msix_nr_vectors_allocated(&proxy->pci_dev));
* currently only stops on status change away from ok,
* reset, vmstop and such. If we do add code to start here,
* need to check vmstate, device state etc. */
- return virtio_pci_set_host_notifier_internal(proxy, n, assign);
+ return virtio_pci_set_host_notifier_internal(proxy, n, assign, false);
}
static void virtio_pci_vmstate_change(void *opaque, bool running)
virtio_exit_pci(pci_dev);
}
+static int virtio_rng_init_pci(PCIDevice *pci_dev)
+{
+ VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
+ VirtIODevice *vdev;
+
+ if (proxy->rng.rng == NULL) {
+ proxy->rng.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM));
+
+ object_property_add_child(OBJECT(pci_dev),
+ "default-backend",
+ OBJECT(proxy->rng.default_backend),
+ NULL);
+
+ object_property_set_link(OBJECT(pci_dev),
+ OBJECT(proxy->rng.default_backend),
+ "rng", NULL);
+ }
+
+ vdev = virtio_rng_init(&pci_dev->qdev, &proxy->rng);
+ if (!vdev) {
+ return -1;
+ }
+ virtio_init_pci(proxy, vdev);
+ return 0;
+}
+
+static void virtio_rng_exit_pci(PCIDevice *pci_dev)
+{
+ VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
+
+ virtio_pci_stop_ioeventfd(proxy);
+ virtio_rng_exit(proxy->vdev);
+ virtio_exit_pci(pci_dev);
+}
+
static Property virtio_blk_properties[] = {
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf),
.class_init = virtio_balloon_class_init,
};
+static void virtio_rng_initfn(Object *obj)
+{
+ PCIDevice *pci_dev = PCI_DEVICE(obj);
+ VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
+
+ object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
+ (Object **)&proxy->rng.rng, NULL);
+}
+
+static Property virtio_rng_properties[] = {
+ DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
+ /* Set a default rate limit of 2^47 bytes per minute or roughly 2TB/s. If
+ you have an entropy source capable of generating more entropy than this
+ and you can pass it through via virtio-rng, then hats off to you. Until
+ then, this is unlimited for all practical purposes.
+ */
+ DEFINE_PROP_UINT64("max-bytes", VirtIOPCIProxy, rng.max_bytes, INT64_MAX),
+ DEFINE_PROP_UINT32("period", VirtIOPCIProxy, rng.period_ms, 1 << 16),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void virtio_rng_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ k->init = virtio_rng_init_pci;
+ k->exit = virtio_rng_exit_pci;
+ k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+ k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
+ k->revision = VIRTIO_PCI_ABI_VERSION;
+ k->class_id = PCI_CLASS_OTHERS;
+ dc->reset = virtio_pci_reset;
+ dc->props = virtio_rng_properties;
+}
+
+static TypeInfo virtio_rng_info = {
+ .name = "virtio-rng-pci",
+ .parent = TYPE_PCI_DEVICE,
+ .instance_size = sizeof(VirtIOPCIProxy),
+ .instance_init = virtio_rng_initfn,
+ .class_init = virtio_rng_class_init,
+};
+
static int virtio_scsi_init_pci(PCIDevice *pci_dev)
{
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
return -EINVAL;
}
- vdev->nvectors = proxy->nvectors;
+ vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED
+ ? proxy->scsi.num_queues + 3
+ : proxy->nvectors;
virtio_init_pci(proxy, vdev);
/* make the actual value visible */
}
static Property virtio_scsi_properties[] = {
- DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
+ DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
+ DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED),
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, host_features, scsi),
DEFINE_PROP_END_OF_LIST(),
};
type_register_static(&virtio_serial_info);
type_register_static(&virtio_balloon_info);
type_register_static(&virtio_scsi_info);
+ type_register_static(&virtio_rng_info);
}
type_init(virtio_pci_register_types)
projects / qemu.git / blobdiff