#define _QEMU_VIRTIO_H
#include "hw.h"
-#include "pci.h"
-
-#ifdef _WIN32
-struct iovec {
- void *iov_base;
- size_t iov_len;
-};
-#else
-#include <sys/uio.h>
+#include "net.h"
+#include "qdev.h"
+#include "sysemu.h"
+#include "block.h"
+#include "event_notifier.h"
+#ifdef CONFIG_LINUX
+#include "9p.h"
#endif
/* from Linux's linux/virtio_config.h */
/* We've given up on this device. */
#define VIRTIO_CONFIG_S_FAILED 0x80
-/* We notify when the ring is completely used, even if the guest is supressing
+/* Some virtio feature bits (currently bits 28 through 31) are reserved for the
+ * transport being used (eg. virtio_ring), the rest are per-device feature bits. */
+#define VIRTIO_TRANSPORT_F_START 28
+#define VIRTIO_TRANSPORT_F_END 32
+
+/* We notify when the ring is completely used, even if the guest is suppressing
* callbacks */
#define VIRTIO_F_NOTIFY_ON_EMPTY 24
+/* We support indirect buffer descriptors */
+#define VIRTIO_RING_F_INDIRECT_DESC 28
+/* The Guest publishes the used index for which it expects an interrupt
+ * at the end of the avail ring. Host should ignore the avail->flags field. */
+/* The Host publishes the avail index for which it expects a kick
+ * at the end of the used ring. Guest should ignore the used->flags field. */
+#define VIRTIO_RING_F_EVENT_IDX 29
+/* A guest should never accept this. It implies negotiation is broken. */
+#define VIRTIO_F_BAD_FEATURE 30
/* from Linux's linux/virtio_ring.h */
#define VRING_DESC_F_NEXT 1
/* This marks a buffer as write-only (otherwise read-only). */
#define VRING_DESC_F_WRITE 2
+/* This means the buffer contains a list of buffer descriptors. */
+#define VRING_DESC_F_INDIRECT 4
/* This means don't notify other side when buffer added. */
#define VRING_USED_F_NO_NOTIFY 1
}
typedef struct VirtQueue VirtQueue;
-typedef struct VirtIODevice VirtIODevice;
#define VIRTQUEUE_MAX_SIZE 1024
unsigned int out_num;
unsigned int in_num;
target_phys_addr_t in_addr[VIRTQUEUE_MAX_SIZE];
+ target_phys_addr_t out_addr[VIRTQUEUE_MAX_SIZE];
struct iovec in_sg[VIRTQUEUE_MAX_SIZE];
struct iovec out_sg[VIRTQUEUE_MAX_SIZE];
} VirtQueueElement;
-#define VIRTIO_PCI_QUEUE_MAX 16
+typedef struct {
+ void (*notify)(void * opaque, uint16_t vector);
+ void (*save_config)(void * opaque, QEMUFile *f);
+ void (*save_queue)(void * opaque, int n, QEMUFile *f);
+ 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);
+ bool (*query_guest_notifiers)(void * opaque);
+ int (*set_guest_notifiers)(void * opaque, bool assigned);
+ int (*set_host_notifier)(void * opaque, int n, bool assigned);
+ void (*vmstate_change)(void * opaque, bool running);
+} VirtIOBindings;
+
+#define VIRTIO_PCI_QUEUE_MAX 64
+
+#define VIRTIO_NO_VECTOR 0xffff
struct VirtIODevice
{
- PCIDevice pci_dev;
const char *name;
- uint32_t addr;
uint8_t status;
uint8_t isr;
uint16_t queue_sel;
- uint32_t features;
+ uint32_t guest_features;
size_t config_len;
void *config;
- uint32_t (*get_features)(VirtIODevice *vdev);
+ 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);
void (*get_config)(VirtIODevice *vdev, uint8_t *config);
void (*set_config)(VirtIODevice *vdev, const uint8_t *config);
void (*reset)(VirtIODevice *vdev);
+ void (*set_status)(VirtIODevice *vdev, uint8_t val);
VirtQueue *vq;
+ const VirtIOBindings *binding;
+ void *binding_opaque;
+ uint16_t device_id;
+ bool vm_running;
+ VMChangeStateEntry *vmstate;
};
-VirtIODevice *virtio_init_pci(PCIBus *bus, const char *name,
- uint16_t vendor, uint16_t device,
- uint16_t subvendor, uint16_t subdevice,
- uint8_t class_code, uint8_t subclass_code,
- uint8_t pif, size_t config_size,
- size_t struct_size);
-
VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
void (*handle_output)(VirtIODevice *,
VirtQueue *));
void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
unsigned int len, unsigned int idx);
+void virtqueue_map_sg(struct iovec *sg, target_phys_addr_t *addr,
+ size_t num_sg, int is_write);
int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem);
int virtqueue_avail_bytes(VirtQueue *vq, int in_bytes, int out_bytes);
void virtio_save(VirtIODevice *vdev, QEMUFile *f);
-void virtio_load(VirtIODevice *vdev, QEMUFile *f);
+int virtio_load(VirtIODevice *vdev, QEMUFile *f);
+
+void virtio_cleanup(VirtIODevice *vdev);
void virtio_notify_config(VirtIODevice *vdev);
int virtio_queue_empty(VirtQueue *vq);
+/* Host binding interface. */
+
+VirtIODevice *virtio_common_init(const char *name, uint16_t device_id,
+ size_t config_size, size_t struct_size);
+uint32_t virtio_config_readb(VirtIODevice *vdev, uint32_t addr);
+uint32_t virtio_config_readw(VirtIODevice *vdev, uint32_t addr);
+uint32_t virtio_config_readl(VirtIODevice *vdev, uint32_t addr);
+void virtio_config_writeb(VirtIODevice *vdev, uint32_t addr, uint32_t data);
+void virtio_config_writew(VirtIODevice *vdev, uint32_t addr, uint32_t data);
+void virtio_config_writel(VirtIODevice *vdev, uint32_t addr, uint32_t data);
+void virtio_queue_set_addr(VirtIODevice *vdev, int n, target_phys_addr_t addr);
+target_phys_addr_t virtio_queue_get_addr(VirtIODevice *vdev, int n);
+int virtio_queue_get_num(VirtIODevice *vdev, int n);
+void virtio_queue_notify(VirtIODevice *vdev, int n);
+uint16_t virtio_queue_vector(VirtIODevice *vdev, int n);
+void virtio_queue_set_vector(VirtIODevice *vdev, int n, uint16_t vector);
+void virtio_set_status(VirtIODevice *vdev, uint8_t val);
+void virtio_reset(void *opaque);
+void virtio_update_irq(VirtIODevice *vdev);
+
+void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
+ void *opaque);
+
+/* Base devices. */
+VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
+ char **serial);
+struct virtio_net_conf;
+VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf,
+ struct virtio_net_conf *net);
+typedef struct virtio_serial_conf virtio_serial_conf;
+VirtIODevice *virtio_serial_init(DeviceState *dev, virtio_serial_conf *serial);
+VirtIODevice *virtio_balloon_init(DeviceState *dev);
+#ifdef CONFIG_LINUX
+VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf);
+#endif
+
+
+void virtio_net_exit(VirtIODevice *vdev);
+void virtio_blk_exit(VirtIODevice *vdev);
+void virtio_serial_exit(VirtIODevice *vdev);
+void virtio_balloon_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_BIT("event_idx", _state, _field, \
+ VIRTIO_RING_F_EVENT_IDX, 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);
+target_phys_addr_t virtio_queue_get_used_addr(VirtIODevice *vdev, int n);
+target_phys_addr_t virtio_queue_get_ring_addr(VirtIODevice *vdev, int n);
+target_phys_addr_t virtio_queue_get_desc_size(VirtIODevice *vdev, int n);
+target_phys_addr_t virtio_queue_get_avail_size(VirtIODevice *vdev, int n);
+target_phys_addr_t virtio_queue_get_used_size(VirtIODevice *vdev, int n);
+target_phys_addr_t virtio_queue_get_ring_size(VirtIODevice *vdev, int n);
+uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
+void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
+VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
+EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
+EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq);
+void virtio_queue_notify_vq(VirtQueue *vq);
+void virtio_irq(VirtQueue *vq);
#endif
projects / qemu.git / blobdiff