Add support for extended feature bits: up to 64 bit.
Only virtio-pci is actually implemented,
s390 and syborg are stubbed out (and untested).
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
hw/qdev-properties.c | 39 ++++++++++++++++----
hw/qdev.h | 10 +++++
hw/s390-virtio-bus.c | 5 ++-
hw/s390-virtio-bus.h | 2 +-
hw/syborg_virtio.c | 7 ++--
hw/vhost_net.c | 8 ++--
hw/vhost_net.h | 4 +-
hw/virtio-9p.c | 2 +-
hw/virtio-balloon.c | 2 +-
hw/virtio-blk.c | 2 +-
hw/virtio-blk.h | 2 +-
hw/virtio-net.c | 11 +++---
hw/virtio-net.h | 34 +++++++++---------
hw/virtio-pci.c | 91 +++++++++++++++++++++++++++++++++++-------------
hw/virtio-serial-bus.c | 2 +-
hw/virtio.c | 24 ++++++++++---
hw/virtio.h | 17 +++++----
17 files changed, 179 insertions(+), 83 deletions(-)
diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c
index 1088a26..a933c9e 100644
--- a/hw/qdev-properties.c
+++ b/hw/qdev-properties.c
@@ -10,20 +10,35 @@ void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)
return ptr;
}
-static uint32_t qdev_get_prop_mask(Property *prop)
+static uint64_t qdev_get_prop_mask(Property *prop)
{
assert(prop->info->type == PROP_TYPE_BIT);
- return 0x1 << prop->bitnr;
+ return 0x1ULL << prop->bitnr;
+}
+
+static uint64_t qdev_get_prop_val(DeviceState *dev, Property *prop)
+{
+ assert(prop->info->type == PROP_TYPE_BIT);
+ if (prop->info->size == sizeof(uint32_t)) {
+ return *(uint32_t *)qdev_get_prop_ptr(dev, prop);
+ } else {
+ return *(uint64_t *)qdev_get_prop_ptr(dev, prop);
+ }
}
static void bit_prop_set(DeviceState *dev, Property *props, bool val)
{
- uint32_t *p = qdev_get_prop_ptr(dev, props);
- uint32_t mask = qdev_get_prop_mask(props);
+ uint64_t p = qdev_get_prop_val(dev, props);
+ uint64_t mask = qdev_get_prop_mask(props);
if (val)
- *p |= mask;
+ p |= mask;
else
- *p &= ~mask;
+ p &= ~mask;
+ if (props->info->size == sizeof(uint32_t)) {
+ *(uint32_t *)qdev_get_prop_ptr(dev, props) = p;
+ } else {
+ *(uint64_t *)qdev_get_prop_ptr(dev, props) = p;
+ }
}
static void qdev_prop_cpy(DeviceState *dev, Property *props, void *src)
@@ -51,8 +66,8 @@ static int parse_bit(DeviceState *dev, Property *prop, const char *str)
static int print_bit(DeviceState *dev, Property *prop, char *dest, size_t len)
{
- uint32_t *p = qdev_get_prop_ptr(dev, prop);
- return snprintf(dest, len, (*p & qdev_get_prop_mask(prop)) ? "on" : "off");
+ uint64_t val = qdev_get_prop_val(dev, prop);
+ return snprintf(dest, len, (val & qdev_get_prop_mask(prop)) ? "on" : "off");
}
PropertyInfo qdev_prop_bit = {
@@ -63,6 +78,14 @@ PropertyInfo qdev_prop_bit = {
.print = print_bit,
};
+PropertyInfo qdev_prop_bit64 = {
+ .name = "on/off",
+ .type = PROP_TYPE_BIT,
+ .size = sizeof(uint64_t),
+ .parse = parse_bit,
+ .print = print_bit,
+};
+
/* --- 8bit integer --- */
static int parse_uint8(DeviceState *dev, Property *prop, const char *str)
diff --git a/hw/qdev.h b/hw/qdev.h
index 8a13ec9..e65cab0 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -219,6 +219,7 @@ int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
/*** qdev-properties.c ***/
extern PropertyInfo qdev_prop_bit;
+extern PropertyInfo qdev_prop_bit64;
extern PropertyInfo qdev_prop_uint8;
extern PropertyInfo qdev_prop_uint16;
extern PropertyInfo qdev_prop_uint32;
@@ -257,6 +258,15 @@ extern PropertyInfo qdev_prop_pci_devfn;
.defval = (bool[]) { (_defval) }, \
}
+#define DEFINE_PROP_BIT64(_name, _state, _field, _bit, _defval) { \
+ .name = (_name), \
+ .info = &(qdev_prop_bit64), \
+ .bitnr = (_bit), \
+ .offset = offsetof(_state, _field) \
+ + type_check(uint64_t,typeof_field(_state, _field)), \
+ .defval = (bool[]) { (_defval) }, \
+ }
+
#define DEFINE_PROP_UINT8(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
#define DEFINE_PROP_UINT16(_n, _s, _f, _d) \
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index 175e5cb..89e8c8e 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -310,10 +310,11 @@ static void virtio_s390_notify(void *opaque, uint16_t vector)
kvm_s390_virtio_irq(s390_cpu_addr2state(0), 0, token);
}
-static unsigned virtio_s390_get_features(void *opaque)
+static uint64_t virtio_s390_get_features(void *opaque)
{
VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
- return dev->host_features;
+ /* TODO: support high 32 bit features */
+ return dev->host_features & 0xFFFFFFFFULL;
}
/**************** S390 Virtio Bus Device Descriptions *******************/
diff --git a/hw/s390-virtio-bus.h b/hw/s390-virtio-bus.h
index edf6d04..5c851e3 100644
--- a/hw/s390-virtio-bus.h
+++ b/hw/s390-virtio-bus.h
@@ -43,7 +43,7 @@ typedef struct VirtIOS390Device {
VirtIODevice *vdev;
BlockConf block;
NICConf nic;
- uint32_t host_features;
+ uint64_t host_features;
virtio_serial_conf serial;
virtio_net_conf net;
} VirtIOS390Device;
diff --git a/hw/syborg_virtio.c b/hw/syborg_virtio.c
index ee08c49..b64c357 100644
--- a/hw/syborg_virtio.c
+++ b/hw/syborg_virtio.c
@@ -67,7 +67,7 @@ typedef struct {
uint32_t int_enable;
uint32_t id;
NICConf nic;
- uint32_t host_features;
+ uint64_t host_features;
virtio_net_conf net;
} SyborgVirtIOProxy;
@@ -244,10 +244,11 @@ static void syborg_virtio_update_irq(void *opaque, uint16_t vector)
qemu_set_irq(proxy->irq, level != 0);
}
-static unsigned syborg_virtio_get_features(void *opaque)
+static uint32_t syborg_virtio_get_features(void *opaque)
{
SyborgVirtIOProxy *proxy = opaque;
- return proxy->host_features;
+ /* TODO: support high 32 bit features */
+ return proxy->host_features & 0xFFFFFFFFULL;
}
static VirtIOBindings syborg_virtio_bindings = {
diff --git a/hw/vhost_net.c b/hw/vhost_net.c
index 420e05f..7e94f61 100644
--- a/hw/vhost_net.c
+++ b/hw/vhost_net.c
@@ -41,7 +41,7 @@ struct vhost_net {
VLANClientState *vc;
};
-unsigned vhost_net_get_features(struct vhost_net *net, unsigned features)
+uint64_t vhost_net_get_features(struct vhost_net *net, uint64_t features)
{
/* Clear features not supported by host kernel. */
if (!(net->dev.features & (1 << VIRTIO_F_NOTIFY_ON_EMPTY))) {
@@ -56,7 +56,7 @@ unsigned vhost_net_get_features(struct vhost_net *net, unsigned features)
return features;
}
-void vhost_net_ack_features(struct vhost_net *net, unsigned features)
+void vhost_net_ack_features(struct vhost_net *net, uint64_t features)
{
net->dev.acked_features = net->dev.backend_features;
if (features & (1 << VIRTIO_F_NOTIFY_ON_EMPTY)) {
@@ -219,11 +219,11 @@ void vhost_net_cleanup(struct vhost_net *net)
{
}
-unsigned vhost_net_get_features(struct vhost_net *net, unsigned features)
+uint64_t vhost_net_get_features(struct vhost_net *net, uint64_t features)
{
return features;
}
-void vhost_net_ack_features(struct vhost_net *net, unsigned features)
+void vhost_net_ack_features(struct vhost_net *net, uint64_t features)
{
}
#endif
diff --git a/hw/vhost_net.h b/hw/vhost_net.h
index 91e40b1..4069258 100644
--- a/hw/vhost_net.h
+++ b/hw/vhost_net.h
@@ -14,7 +14,7 @@ void vhost_net_stop(VHostNetState *net, VirtIODevice *dev);
void vhost_net_cleanup(VHostNetState *net);
-unsigned vhost_net_get_features(VHostNetState *net, unsigned features);
-void vhost_net_ack_features(VHostNetState *net, unsigned features);
+uint64_t vhost_net_get_features(VHostNetState *net, uint64_t features);
+void vhost_net_ack_features(VHostNetState *net, uint64_t features);
#endif
diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index 7e29535..184691a 100644
--- a/hw/virtio-9p.c
+++ b/hw/virtio-9p.c
@@ -3624,7 +3624,7 @@ static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq)
free_pdu(s, pdu);
}
-static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features)
+static uint64_t virtio_9p_get_features(VirtIODevice *vdev, uint64_t features)
{
features |= 1 << VIRTIO_9P_MOUNT_TAG;
return features;
diff --git a/hw/virtio-balloon.c b/hw/virtio-balloon.c
index f9add1c..b34adc1 100644
--- a/hw/virtio-balloon.c
+++ b/hw/virtio-balloon.c
@@ -195,7 +195,7 @@ static void virtio_balloon_set_config(VirtIODevice *vdev,
dev->actual = le32_to_cpu(config.actual);
}
-static uint32_t virtio_balloon_get_features(VirtIODevice *vdev, uint32_t f)
+static uint64_t virtio_balloon_get_features(VirtIODevice *vdev, uint64_t f)
{
f |= (1 << VIRTIO_BALLOON_F_STATS_VQ);
return f;
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 91e0394..442ce11 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -466,7 +466,7 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
memcpy(config, &blkcfg, sizeof(struct virtio_blk_config));
}
-static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
+static uint64_t virtio_blk_get_features(VirtIODevice *vdev, uint64_t features)
{
VirtIOBlock *s = to_virtio_blk(vdev);
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index fff46da..61104ea 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -98,7 +98,7 @@ struct virtio_scsi_inhdr
#ifdef __linux__
#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \
- DEFINE_PROP_BIT("scsi", _state, _field, VIRTIO_BLK_F_SCSI, true)
+ DEFINE_PROP_BIT64("scsi", _state, _field, VIRTIO_BLK_F_SCSI, true)
#else
#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index 6997e02..c242fd1 100644
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -223,7 +223,7 @@ static int peer_has_ufo(VirtIONet *n)
return n->has_ufo;
}
-static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features)
+static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features)
{
VirtIONet *n = to_virtio_net(vdev);
@@ -258,9 +258,9 @@ static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features)
return vhost_net_get_features(tap_get_vhost_net(n->nic->nc.peer), features);
}
-static uint32_t virtio_net_bad_features(VirtIODevice *vdev)
+static uint64_t virtio_net_bad_features(VirtIODevice *vdev)
{
- uint32_t features = 0;
+ uint64_t features = 0;
/* Linux kernel 2.6.25. It understood MAC (as everyone must),
* but also these: */
@@ -273,7 +273,7 @@ static uint32_t virtio_net_bad_features(VirtIODevice *vdev)
return features;
}
-static void virtio_net_set_features(VirtIODevice *vdev, uint32_t features)
+static void virtio_net_set_features(VirtIODevice *vdev, uint64_t features)
{
VirtIONet *n = to_virtio_net(vdev);
@@ -628,7 +628,8 @@ static ssize_t virtio_net_receive(VLANClientState *nc, const uint8_t *buf, size_
return -1;
error_report("virtio-net unexpected empty queue: "
"i %zd mergeable %d offset %zd, size %zd, "
- "guest hdr len %zd, host hdr len %zd guest features 0x%x",
+ "guest hdr len %zd, host hdr len %zd "
+ "guest features 0x%" PRIx64,
i, n->mergeable_rx_bufs, offset, size,
guest_hdr_len, host_hdr_len, n->vdev.guest_features);
exit(1);
diff --git a/hw/virtio-net.h b/hw/virtio-net.h
index 8af9a1c..8f8ac7f 100644
--- a/hw/virtio-net.h
+++ b/hw/virtio-net.h
@@ -169,21 +169,21 @@ struct virtio_net_ctrl_mac {
#define DEFINE_VIRTIO_NET_FEATURES(_state, _field) \
DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \
- DEFINE_PROP_BIT("csum", _state, _field, VIRTIO_NET_F_CSUM, true), \
- DEFINE_PROP_BIT("guest_csum", _state, _field, VIRTIO_NET_F_GUEST_CSUM, true), \
- DEFINE_PROP_BIT("gso", _state, _field, VIRTIO_NET_F_GSO, true), \
- DEFINE_PROP_BIT("guest_tso4", _state, _field, VIRTIO_NET_F_GUEST_TSO4, true), \
- DEFINE_PROP_BIT("guest_tso6", _state, _field, VIRTIO_NET_F_GUEST_TSO6, true), \
- DEFINE_PROP_BIT("guest_ecn", _state, _field, VIRTIO_NET_F_GUEST_ECN, true), \
- DEFINE_PROP_BIT("guest_ufo", _state, _field, VIRTIO_NET_F_GUEST_UFO, true), \
- DEFINE_PROP_BIT("host_tso4", _state, _field, VIRTIO_NET_F_HOST_TSO4, true), \
- DEFINE_PROP_BIT("host_tso6", _state, _field, VIRTIO_NET_F_HOST_TSO6, true), \
- DEFINE_PROP_BIT("host_ecn", _state, _field, VIRTIO_NET_F_HOST_ECN, true), \
- DEFINE_PROP_BIT("host_ufo", _state, _field, VIRTIO_NET_F_HOST_UFO, true), \
- DEFINE_PROP_BIT("mrg_rxbuf", _state, _field, VIRTIO_NET_F_MRG_RXBUF, true), \
- DEFINE_PROP_BIT("status", _state, _field, VIRTIO_NET_F_STATUS, true), \
- DEFINE_PROP_BIT("ctrl_vq", _state, _field, VIRTIO_NET_F_CTRL_VQ, true), \
- DEFINE_PROP_BIT("ctrl_rx", _state, _field, VIRTIO_NET_F_CTRL_RX, true), \
- DEFINE_PROP_BIT("ctrl_vlan", _state, _field, VIRTIO_NET_F_CTRL_VLAN, true), \
- DEFINE_PROP_BIT("ctrl_rx_extra", _state, _field, VIRTIO_NET_F_CTRL_RX_EXTRA, true)
+ DEFINE_PROP_BIT64("csum", _state, _field, VIRTIO_NET_F_CSUM, true), \
+ DEFINE_PROP_BIT64("guest_csum", _state, _field, VIRTIO_NET_F_GUEST_CSUM, true), \
+ DEFINE_PROP_BIT64("gso", _state, _field, VIRTIO_NET_F_GSO, true), \
+ DEFINE_PROP_BIT64("guest_tso4", _state, _field, VIRTIO_NET_F_GUEST_TSO4, true), \
+ DEFINE_PROP_BIT64("guest_tso6", _state, _field, VIRTIO_NET_F_GUEST_TSO6, true), \
+ DEFINE_PROP_BIT64("guest_ecn", _state, _field, VIRTIO_NET_F_GUEST_ECN, true), \
+ DEFINE_PROP_BIT64("guest_ufo", _state, _field, VIRTIO_NET_F_GUEST_UFO, true), \
+ DEFINE_PROP_BIT64("host_tso4", _state, _field, VIRTIO_NET_F_HOST_TSO4, true), \
+ DEFINE_PROP_BIT64("host_tso6", _state, _field, VIRTIO_NET_F_HOST_TSO6, true), \
+ DEFINE_PROP_BIT64("host_ecn", _state, _field, VIRTIO_NET_F_HOST_ECN, true), \
+ DEFINE_PROP_BIT64("host_ufo", _state, _field, VIRTIO_NET_F_HOST_UFO, true), \
+ DEFINE_PROP_BIT64("mrg_rxbuf", _state, _field, VIRTIO_NET_F_MRG_RXBUF, true), \
+ DEFINE_PROP_BIT64("status", _state, _field, VIRTIO_NET_F_STATUS, true), \
+ DEFINE_PROP_BIT64("ctrl_vq", _state, _field, VIRTIO_NET_F_CTRL_VQ, true), \
+ DEFINE_PROP_BIT64("ctrl_rx", _state, _field, VIRTIO_NET_F_CTRL_RX, true), \
+ DEFINE_PROP_BIT64("ctrl_vlan", _state, _field, VIRTIO_NET_F_CTRL_VLAN, true), \
+ DEFINE_PROP_BIT64("ctrl_rx_extra", _state, _field, VIRTIO_NET_F_CTRL_RX_EXTRA, true)
#endif
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 5236470..eb86de2 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -64,15 +64,28 @@
/* Config space size */
#define VIRTIO_PCI_CONFIG_NOMSI 20
#define VIRTIO_PCI_CONFIG_MSI 24
-#define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \
- VIRTIO_PCI_CONFIG_MSI : \
- VIRTIO_PCI_CONFIG_NOMSI)
+#define VIRTIO_PCI_CONFIG_HI 32
+/* An extended 32-bit r/o bitmask of the features supported by the host */
+#define VIRTIO_PCI_HOST_FEATURES_HI 24
+
+/* An extended 32-bit r/w bitmask of features activated by the guest */
+#define VIRTIO_PCI_GUEST_FEATURES_HI 28
+
+#define VIRTIO_PCI_REGION_SIZE(proxy) (((proxy)->host_features & \
+ (1ULL << VIRTIO_F_FEATURES_HI)) ? \
+ VIRTIO_PCI_CONFIG_HI : \
+ (msix_present(&(proxy)->pci_dev) ? \
+ VIRTIO_PCI_CONFIG_MSI : \
+ VIRTIO_PCI_CONFIG_NOMSI))
/* The remaining space is defined by each driver as the per-driver
* configuration space */
-#define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \
- VIRTIO_PCI_CONFIG_MSI : \
- VIRTIO_PCI_CONFIG_NOMSI)
+#define VIRTIO_PCI_CONFIG(proxy) (((proxy)->vdev->guest_features & \
+ (1ULL << VIRTIO_F_FEATURES_HI)) ? \
+ VIRTIO_PCI_CONFIG_HI : \
+ (msix_enabled(&(proxy)->pci_dev) ? \
+ VIRTIO_PCI_CONFIG_MSI : \
+ VIRTIO_PCI_CONFIG_NOMSI))
/* Virtio ABI version, if we increment this, we break the guest driver. */
#define VIRTIO_PCI_ABI_VERSION 0
@@ -106,7 +119,7 @@ typedef struct {
uint32_t nvectors;
BlockConf block;
NICConf nic;
- uint32_t host_features;
+ uint64_t host_features;
#ifdef CONFIG_LINUX
V9fsConf fsconf;
#endif
@@ -314,11 +327,22 @@ static void virtio_pci_reset(DeviceState *d)
proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG;
}
+static inline uint64_t virtio_replace_hi(uint64_t features, uint32_t hi)
+{
+ return (features & 0xffffffffull) | ((uint64_t)hi) << 32;
+}
+
+static inline uint64_t virtio_replace_lo(uint64_t features, uint32_t lo)
+{
+ return (features & 0xffffffff00000000ull) | lo;
+}
+
static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
VirtIOPCIProxy *proxy = opaque;
VirtIODevice *vdev = proxy->vdev;
target_phys_addr_t pa;
+ uint64_t f;
switch (addr) {
case VIRTIO_PCI_GUEST_FEATURES:
@@ -329,9 +353,15 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
else
val = 0;
}
+ /* Clearing VIRTIO_F_FEATURES_HI clears high 32 bit. */
+ if (val & (1ULL << VIRTIO_F_FEATURES_HI)) {
+ f = virtio_replace_lo(vdev->guest_features, val);
+ } else {
+ f = val;
+ }
if (vdev->set_features)
- vdev->set_features(vdev, val);
- vdev->guest_features = val;
+ vdev->set_features(vdev, f);
+ vdev->guest_features = f;
break;
case VIRTIO_PCI_QUEUE_PFN:
pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
@@ -389,6 +419,12 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
val = VIRTIO_NO_VECTOR;
virtio_queue_set_vector(vdev, vdev->queue_sel, val);
break;
+ case VIRTIO_PCI_GUEST_FEATURES_HI:
+ f = virtio_replace_hi(vdev->guest_features, val);
+ if (vdev->set_features)
+ vdev->set_features(vdev, f);
+ vdev->guest_features = f;
+ break;
default:
error_report("%s: unexpected address 0x%x value 0x%x",
__func__, addr, val);
@@ -433,6 +469,11 @@ static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
case VIRTIO_MSI_QUEUE_VECTOR:
ret = virtio_queue_vector(vdev, vdev->queue_sel);
break;
+ case VIRTIO_PCI_HOST_FEATURES_HI:
+ ret = proxy->host_features >> 32;
+ break;
+ case VIRTIO_PCI_GUEST_FEATURES_HI:
+ ret = vdev->guest_features >> 32;
default:
break;
}
@@ -443,7 +484,7 @@ static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr)
{
VirtIOPCIProxy *proxy = opaque;
- uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
+ uint32_t config = VIRTIO_PCI_CONFIG(proxy);
addr -= proxy->addr;
if (addr < config)
return virtio_ioport_read(proxy, addr);
@@ -454,7 +495,7 @@ static uint32_t virtio_pci_config_readb(void *opaque, uint32_t 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);
+ uint32_t config = VIRTIO_PCI_CONFIG(proxy);
addr -= proxy->addr;
if (addr < config)
return virtio_ioport_read(proxy, addr);
@@ -465,7 +506,7 @@ static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr)
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 config = VIRTIO_PCI_CONFIG(proxy);
addr -= proxy->addr;
if (addr < config)
return virtio_ioport_read(proxy, addr);
@@ -476,7 +517,7 @@ static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr)
static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val)
{
VirtIOPCIProxy *proxy = opaque;
- uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
+ uint32_t config = VIRTIO_PCI_CONFIG(proxy);
addr -= proxy->addr;
if (addr < config) {
virtio_ioport_write(proxy, addr, val);
@@ -489,7 +530,7 @@ static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t 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);
+ uint32_t config = VIRTIO_PCI_CONFIG(proxy);
addr -= proxy->addr;
if (addr < config) {
virtio_ioport_write(proxy, addr, val);
@@ -502,7 +543,7 @@ static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val)
static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val)
{
VirtIOPCIProxy *proxy = opaque;
- uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
+ uint32_t config = VIRTIO_PCI_CONFIG(proxy);
addr -= proxy->addr;
if (addr < config) {
virtio_ioport_write(proxy, addr, val);
@@ -517,7 +558,7 @@ static void virtio_map(PCIDevice *pci_dev, int region_num,
{
VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev);
VirtIODevice *vdev = proxy->vdev;
- unsigned config_len = VIRTIO_PCI_REGION_SIZE(pci_dev) + vdev->config_len;
+ unsigned config_len = VIRTIO_PCI_REGION_SIZE(proxy) + vdev->config_len;
proxy->addr = addr;
@@ -551,7 +592,7 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
msix_write_config(pci_dev, address, val, len);
}
-static unsigned virtio_pci_get_features(void *opaque)
+static uint64_t virtio_pci_get_features(void *opaque)
{
VirtIOPCIProxy *proxy = opaque;
return proxy->host_features;
@@ -788,13 +829,6 @@ static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
proxy->pci_dev.config_write = virtio_write_config;
- size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len;
- if (size & (size-1))
- size = 1 << qemu_fls(size);
-
- pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
- virtio_map);
-
if (!kvm_has_many_ioeventfds()) {
proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
}
@@ -803,6 +837,15 @@ static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
proxy->host_features = vdev->get_features(vdev, proxy->host_features);
+ if (proxy->host_features & 0xffffffff00000000ull) {
+ proxy->host_features |= 0x1ULL << VIRTIO_F_FEATURES_HI;
+ }
+ size = VIRTIO_PCI_REGION_SIZE(proxy) + vdev->config_len;
+ if (size & (size-1))
+ size = 1 << qemu_fls(size);
+
+ pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
+ virtio_map);
}
static int virtio_blk_init_pci(PCIDevice *pci_dev)
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 6227379..76acd02 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -461,7 +461,7 @@ static void handle_input(VirtIODevice *vdev, VirtQueue *vq)
{
}
-static uint32_t get_features(VirtIODevice *vdev, uint32_t features)
+static uint64_t get_features(VirtIODevice *vdev, uint64_t features)
{
VirtIOSerial *vser;
diff --git a/hw/virtio.c b/hw/virtio.c
index 31bd9e3..b9acbd4 100644
--- a/hw/virtio.c
+++ b/hw/virtio.c
@@ -653,6 +653,8 @@ void virtio_notify_config(VirtIODevice *vdev)
void virtio_save(VirtIODevice *vdev, QEMUFile *f)
{
+ uint32_t guest_features_hi = vdev->guest_features >> 32;
+ uint32_t guest_features_lo = vdev->guest_features;
int i;
if (vdev->binding->save_config)
@@ -661,7 +663,10 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f)
qemu_put_8s(f, &vdev->status);
qemu_put_8s(f, &vdev->isr);
qemu_put_be16s(f, &vdev->queue_sel);
- qemu_put_be32s(f, &vdev->guest_features);
+ qemu_put_be32s(f, &guest_features_lo);
+ if (guest_features_lo & (1ULL << VIRTIO_F_FEATURES_HI)) {
+ qemu_put_be32s(f, &guest_features_hi);
+ }
qemu_put_be32(f, vdev->config_len);
qemu_put_buffer(f, vdev->config, vdev->config_len);
@@ -687,8 +692,9 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f)
int virtio_load(VirtIODevice *vdev, QEMUFile *f)
{
int num, i, ret;
- uint32_t features;
- uint32_t supported_features =
+ uint32_t features_hi, features_lo;
+ uint64_t features;
+ uint64_t supported_features =
vdev->binding->get_features(vdev->binding_opaque);
if (vdev->binding->load_config) {
@@ -700,9 +706,17 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
qemu_get_8s(f, &vdev->status);
qemu_get_8s(f, &vdev->isr);
qemu_get_be16s(f, &vdev->queue_sel);
- qemu_get_be32s(f, &features);
+ qemu_get_be32s(f, &features_lo);
+ if (features_lo & (1ULL << VIRTIO_F_FEATURES_HI)) {
+ qemu_get_be32s(f, &features_hi);
+ } else {
+ features_hi = 0;
+ }
+ features = ((uint64_t)features_hi) << 32 | features_lo;
+
if (features & ~supported_features) {
- error_report("Features 0x%x unsupported. Allowed features: 0x%x",
+ error_report("Features 0x%" PRIx64 " unsupported. "
+ "Allowed features: 0x%" PRIx64,
features, supported_features);
return -1;
}
diff --git a/hw/virtio.h b/hw/virtio.h
index bc72289..9517b97 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -49,6 +49,9 @@
/* A guest should never accept this. It implies negotiation is broken. */
#define VIRTIO_F_BAD_FEATURE 30
+/* Enables feature bits 32 to 63 (only really required for virtio_pci). */
+#define VIRTIO_F_FEATURES_HI 31
+
/* from Linux's linux/virtio_ring.h */
/* This marks a buffer as continuing via the next field. */
@@ -93,7 +96,7 @@ typedef struct {
int (*load_config)(void * opaque, QEMUFile *f);
int (*load_queue)(void * opaque, int n, QEMUFile *f);
int (*load_done)(void * opaque, QEMUFile *f);
- unsigned (*get_features)(void * opaque);
+ uint64_t (*get_features)(void * opaque);
bool (*query_guest_notifiers)(void * opaque);
int (*set_guest_notifiers)(void * opaque, bool assigned);
int (*set_host_notifier)(void * opaque, int n, bool assigned);
@@ -110,14 +113,14 @@ struct VirtIODevice
uint8_t status;
uint8_t isr;
uint16_t queue_sel;
- uint32_t guest_features;
+ uint64_t guest_features;
size_t config_len;
void *config;
uint16_t config_vector;
int nvectors;
- uint32_t (*get_features)(VirtIODevice *vdev, uint32_t requested_features);
- uint32_t (*bad_features)(VirtIODevice *vdev);
- void (*set_features)(VirtIODevice *vdev, uint32_t val);
+ uint64_t (*get_features)(VirtIODevice *vdev, uint64_t requested_features);
+ uint64_t (*bad_features)(VirtIODevice *vdev);
+ void (*set_features)(VirtIODevice *vdev, uint64_t val);
void (*get_config)(VirtIODevice *vdev, uint8_t *config);
void (*set_config)(VirtIODevice *vdev, const uint8_t *config);
void (*reset)(VirtIODevice *vdev);
@@ -209,8 +212,8 @@ void virtio_blk_exit(VirtIODevice *vdev);
void virtio_serial_exit(VirtIODevice *vdev);
#define DEFINE_VIRTIO_COMMON_FEATURES(_state, _field) \
- DEFINE_PROP_BIT("indirect_desc", _state, _field, \
- VIRTIO_RING_F_INDIRECT_DESC, true)
+ DEFINE_PROP_BIT64("indirect_desc", _state, _field, \
+ VIRTIO_RING_F_INDIRECT_DESC, true)
target_phys_addr_t virtio_queue_get_desc_addr(VirtIODevice *vdev, int n);
target_phys_addr_t virtio_queue_get_avail_addr(VirtIODevice *vdev, int n);
--
1.7.5.53.gc233e
--
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