[qemu.git] / hw / virtio.h

/*
 * Virtio Support
 *
 * Copyright IBM, Corp. 2007
 *
 * Authors:
 *  Anthony Liguori   <[email protected]>
 *
 * This work is licensed under the terms of the GNU GPL, version 2.  See
 * the COPYING file in the top-level directory.
 *
 */

#ifndef _QEMU_VIRTIO_H
#define _QEMU_VIRTIO_H

#include "hw.h"
#include "net/net.h"
#include "qdev.h"
#include "sysemu/sysemu.h"
#include "qemu/event_notifier.h"
#ifdef CONFIG_LINUX
#include "9p.h"
#endif

/* from Linux's linux/virtio_config.h */

/* Status byte for guest to report progress, and synchronize features. */
/* We have seen device and processed generic fields (VIRTIO_CONFIG_F_VIRTIO) */
#define VIRTIO_CONFIG_S_ACKNOWLEDGE     1
/* We have found a driver for the device. */
#define VIRTIO_CONFIG_S_DRIVER          2
/* Driver has used its parts of the config, and is happy */
#define VIRTIO_CONFIG_S_DRIVER_OK       4
/* We've given up on this device. */
#define VIRTIO_CONFIG_S_FAILED          0x80

/* 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 */

/* This marks a buffer as continuing via the next field. */
#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
/* This means don't interrupt guest when buffer consumed. */
#define VRING_AVAIL_F_NO_INTERRUPT      1

struct VirtQueue;

static inline hwaddr vring_align(hwaddr addr,
                                             unsigned long align)
{
    return (addr + align - 1) & ~(align - 1);
}

typedef struct VirtQueue VirtQueue;

#define VIRTQUEUE_MAX_SIZE 1024

typedef struct VirtQueueElement
{
    unsigned int index;
    unsigned int out_num;
    unsigned int in_num;
    hwaddr in_addr[VIRTQUEUE_MAX_SIZE];
    hwaddr out_addr[VIRTQUEUE_MAX_SIZE];
    struct iovec in_sg[VIRTQUEUE_MAX_SIZE];
    struct iovec out_sg[VIRTQUEUE_MAX_SIZE];
} VirtQueueElement;

typedef struct {
    void (*notify)(DeviceState *d, uint16_t vector);
    void (*save_config)(DeviceState *d, QEMUFile *f);
    void (*save_queue)(DeviceState *d, int n, QEMUFile *f);
    int (*load_config)(DeviceState *d, QEMUFile *f);
    int (*load_queue)(DeviceState *d, int n, QEMUFile *f);
    int (*load_done)(DeviceState *d, QEMUFile *f);
    unsigned (*get_features)(DeviceState *d);
    bool (*query_guest_notifiers)(DeviceState *d);
    int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assigned);
    int (*set_host_notifier)(DeviceState *d, int n, bool assigned);
    void (*vmstate_change)(DeviceState *d, bool running);
} VirtIOBindings;

#define VIRTIO_PCI_QUEUE_MAX 64

#define VIRTIO_NO_VECTOR 0xffff

#define TYPE_VIRTIO_DEVICE "virtio-device"
#define VIRTIO_DEVICE_GET_CLASS(obj) \
        OBJECT_GET_CLASS(VirtioDeviceClass, obj, TYPE_VIRTIO_DEVICE)
#define VIRTIO_DEVICE_CLASS(klass) \
        OBJECT_CLASS_CHECK(VirtioDeviceClass, klass, TYPE_VIRTIO_DEVICE)
#define VIRTIO_DEVICE(obj) \
        OBJECT_CHECK(VirtIODevice, (obj), TYPE_VIRTIO_DEVICE)

struct VirtIODevice
{
    DeviceState parent_obj;
    const char *name;
    uint8_t status;
    uint8_t isr;
    uint16_t queue_sel;
    uint32_t guest_features;
    size_t config_len;
    void *config;
    uint16_t config_vector;
    int nvectors;
    /*
     * Function pointers will be removed at the end of the series as they are in
     * VirtioDeviceClass.
     */
    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);
    /* Test and clear event pending status.
     * Should be called after unmask to avoid losing events.
     * If backend does not support masking,
     * must check in frontend instead.
     */
    bool (*guest_notifier_pending)(VirtIODevice *vdev, int n);
    /* Mask/unmask events from this vq. Any events reported
     * while masked will become pending.
     * If backend does not support masking,
     * must mask in frontend instead.
     */
    void (*guest_notifier_mask)(VirtIODevice *vdev, int n, bool mask);

    VirtQueue *vq;
    const VirtIOBindings *binding;
    DeviceState *binding_opaque;
    uint16_t device_id;
    bool vm_running;
    VMChangeStateEntry *vmstate;
};

typedef struct VirtioDeviceClass {
    /* This is what a VirtioDevice must implement */
    DeviceClass parent;
    int (*init)(VirtIODevice *vdev);
    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);
} VirtioDeviceClass;

void virtio_init(VirtIODevice *vdev, const char *name,
                         uint16_t device_id, size_t config_size);
void virtio_common_cleanup(VirtIODevice *vdev);

VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
                            void (*handle_output)(VirtIODevice *,
                                                  VirtQueue *));

void virtio_del_queue(VirtIODevice *vdev, int n);

void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem,
                    unsigned int len);
void virtqueue_flush(VirtQueue *vq, unsigned int count);
void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
                    unsigned int len, unsigned int idx);

void virtqueue_map_sg(struct iovec *sg, hwaddr *addr,
    size_t num_sg, int is_write);
int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem);
int virtqueue_avail_bytes(VirtQueue *vq, unsigned int in_bytes,
                          unsigned int out_bytes);
void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
                               unsigned int *out_bytes,
                               unsigned max_in_bytes, unsigned max_out_bytes);

void virtio_notify(VirtIODevice *vdev, VirtQueue *vq);

void virtio_save(VirtIODevice *vdev, QEMUFile *f);

int virtio_load(VirtIODevice *vdev, QEMUFile *f);

void virtio_cleanup(VirtIODevice *vdev);

void virtio_notify_config(VirtIODevice *vdev);

void virtio_queue_set_notification(VirtQueue *vq, int enable);

int virtio_queue_ready(VirtQueue *vq);

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, hwaddr addr);
hwaddr 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);
int virtio_set_features(VirtIODevice *vdev, uint32_t val);

void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
                        DeviceState *opaque);

/* Base devices.  */
typedef struct VirtIOBlkConf VirtIOBlkConf;
VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk);
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);
typedef struct VirtIOSCSIConf VirtIOSCSIConf;
VirtIODevice *virtio_scsi_init(DeviceState *dev, VirtIOSCSIConf *conf);
typedef struct VirtIORNGConf VirtIORNGConf;
VirtIODevice *virtio_rng_init(DeviceState *dev, VirtIORNGConf *conf);
#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);
void virtio_scsi_exit(VirtIODevice *vdev);
void virtio_rng_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)

hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n);
hwaddr virtio_queue_get_avail_addr(VirtIODevice *vdev, int n);
hwaddr virtio_queue_get_used_addr(VirtIODevice *vdev, int n);
hwaddr virtio_queue_get_ring_addr(VirtIODevice *vdev, int n);
hwaddr virtio_queue_get_desc_size(VirtIODevice *vdev, int n);
hwaddr virtio_queue_get_avail_size(VirtIODevice *vdev, int n);
hwaddr virtio_queue_get_used_size(VirtIODevice *vdev, int n);
hwaddr 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);
int virtio_queue_get_id(VirtQueue *vq);
EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
                                                bool with_irqfd);
EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq);
void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign,
                                               bool set_handler);
void virtio_queue_notify_vq(VirtQueue *vq);
void virtio_irq(VirtQueue *vq);
#endif
Commit	Line	Data
967f97fa AL	1	/*
	2	* Virtio Support
	3	*
	4	* Copyright IBM, Corp. 2007
	5	*
	6	* Authors:
	7	* Anthony Liguori <[email protected]>
	8	*
	9	* This work is licensed under the terms of the GNU GPL, version 2. See
	10	* the COPYING file in the top-level directory.
	11	*
	12	*/
	13
	14	#ifndef _QEMU_VIRTIO_H
	15	#define _QEMU_VIRTIO_H
	16
967f97fa	17	#include "hw.h"
1422e32d	18	#include "net/net.h"
53c25cea	19	#include "qdev.h"
9c17d615	20	#include "sysemu/sysemu.h"
1de7afc9	21	#include "qemu/event_notifier.h"
9f107513 AL	22	#ifdef CONFIG_LINUX
	23	#include "9p.h"
	24	#endif
967f97fa AL	25
	26	/* from Linux's linux/virtio_config.h */
	27
	28	/* Status byte for guest to report progress, and synchronize features. */
	29	/* We have seen device and processed generic fields (VIRTIO_CONFIG_F_VIRTIO) */
	30	#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1
	31	/* We have found a driver for the device. */
	32	#define VIRTIO_CONFIG_S_DRIVER 2
	33	/* Driver has used its parts of the config, and is happy */
	34	#define VIRTIO_CONFIG_S_DRIVER_OK 4
	35	/* We've given up on this device. */
	36	#define VIRTIO_CONFIG_S_FAILED 0x80
	37
6d74ca5a MT	38	/* Some virtio feature bits (currently bits 28 through 31) are reserved for the
	39	* transport being used (eg. virtio_ring), the rest are per-device feature bits. */
	40	#define VIRTIO_TRANSPORT_F_START 28
	41	#define VIRTIO_TRANSPORT_F_END 32
	42
d89c682f	43	/* We notify when the ring is completely used, even if the guest is suppressing
967f97fa AL	44	* callbacks */
967f97fa AL	45	#define VIRTIO_F_NOTIFY_ON_EMPTY 24
efeea6d0 MM	46	/* We support indirect buffer descriptors */
efeea6d0 MM	47	#define VIRTIO_RING_F_INDIRECT_DESC 28
bcbabae8 MT	48	/* The Guest publishes the used index for which it expects an interrupt
	49	* at the end of the avail ring. Host should ignore the avail->flags field. */
	50	/* The Host publishes the avail index for which it expects a kick
	51	* at the end of the used ring. Guest should ignore the used->flags field. */
	52	#define VIRTIO_RING_F_EVENT_IDX 29
8eca6b1b AL	53	/* A guest should never accept this. It implies negotiation is broken. */
8eca6b1b AL	54	#define VIRTIO_F_BAD_FEATURE 30
967f97fa AL	55
	56	/* from Linux's linux/virtio_ring.h */
	57
	58	/* This marks a buffer as continuing via the next field. */
	59	#define VRING_DESC_F_NEXT 1
	60	/* This marks a buffer as write-only (otherwise read-only). */
	61	#define VRING_DESC_F_WRITE 2
efeea6d0 MM	62	/* This means the buffer contains a list of buffer descriptors. */
efeea6d0 MM	63	#define VRING_DESC_F_INDIRECT 4
967f97fa AL	64
	65	/* This means don't notify other side when buffer added. */
	66	#define VRING_USED_F_NO_NOTIFY 1
	67	/* This means don't interrupt guest when buffer consumed. */
	68	#define VRING_AVAIL_F_NO_INTERRUPT 1
	69
	70	struct VirtQueue;
	71
a8170e5e	72	static inline hwaddr vring_align(hwaddr addr,
f46f15bc AL	73	unsigned long align)
	74	{
	75	return (addr + align - 1) & ~(align - 1);
	76	}
	77
967f97fa	78	typedef struct VirtQueue VirtQueue;
967f97fa AL	79
	80	#define VIRTQUEUE_MAX_SIZE 1024
	81
	82	typedef struct VirtQueueElement
	83	{
	84	unsigned int index;
	85	unsigned int out_num;
	86	unsigned int in_num;
a8170e5e AK	87	hwaddr in_addr[VIRTQUEUE_MAX_SIZE];
a8170e5e AK	88	hwaddr out_addr[VIRTQUEUE_MAX_SIZE];
967f97fa AL	89	struct iovec in_sg[VIRTQUEUE_MAX_SIZE];
	90	struct iovec out_sg[VIRTQUEUE_MAX_SIZE];
	91	} VirtQueueElement;
	92
53c25cea	93	typedef struct {
d2a0ccc6 MT	94	void (notify)(DeviceState d, uint16_t vector);
	95	void (save_config)(DeviceState d, QEMUFile *f);
	96	void (save_queue)(DeviceState d, int n, QEMUFile *f);
	97	int (load_config)(DeviceState d, QEMUFile *f);
	98	int (load_queue)(DeviceState d, int n, QEMUFile *f);
	99	int (load_done)(DeviceState d, QEMUFile *f);
	100	unsigned (get_features)(DeviceState d);
	101	bool (query_guest_notifiers)(DeviceState d);
2d620f59	102	int (set_guest_notifiers)(DeviceState d, int nvqs, bool assigned);
d2a0ccc6 MT	103	int (set_host_notifier)(DeviceState d, int n, bool assigned);
d2a0ccc6 MT	104	void (vmstate_change)(DeviceState d, bool running);
53c25cea PB	105	} VirtIOBindings;
53c25cea PB	106
bb61564c	107	#define VIRTIO_PCI_QUEUE_MAX 64
967f97fa	108
7055e687 MT	109	#define VIRTIO_NO_VECTOR 0xffff
7055e687 MT	110
8e05db92 FK	111	#define TYPE_VIRTIO_DEVICE "virtio-device"
	112	#define VIRTIO_DEVICE_GET_CLASS(obj) \
	113	OBJECT_GET_CLASS(VirtioDeviceClass, obj, TYPE_VIRTIO_DEVICE)
	114	#define VIRTIO_DEVICE_CLASS(klass) \
	115	OBJECT_CLASS_CHECK(VirtioDeviceClass, klass, TYPE_VIRTIO_DEVICE)
	116	#define VIRTIO_DEVICE(obj) \
	117	OBJECT_CHECK(VirtIODevice, (obj), TYPE_VIRTIO_DEVICE)
	118
967f97fa AL	119	struct VirtIODevice
967f97fa AL	120	{
8e05db92	121	DeviceState parent_obj;
967f97fa	122	const char *name;
967f97fa AL	123	uint8_t status;
	124	uint8_t isr;
	125	uint16_t queue_sel;
704a76fc	126	uint32_t guest_features;
967f97fa AL	127	size_t config_len;
967f97fa AL	128	void *config;
7055e687 MT	129	uint16_t config_vector;
7055e687 MT	130	int nvectors;
8e05db92 FK	131	/*
	132	* Function pointers will be removed at the end of the series as they are in
	133	* VirtioDeviceClass.
	134	*/
8172539d	135	uint32_t (get_features)(VirtIODevice vdev, uint32_t requested_features);
8eca6b1b	136	uint32_t (bad_features)(VirtIODevice vdev);
967f97fa AL	137	void (set_features)(VirtIODevice vdev, uint32_t val);
	138	void (get_config)(VirtIODevice vdev, uint8_t *config);
	139	void (set_config)(VirtIODevice vdev, const uint8_t *config);
	140	void (reset)(VirtIODevice vdev);
3e607cb5	141	void (set_status)(VirtIODevice vdev, uint8_t val);
f1d0f15a MT	142	/* Test and clear event pending status.
	143	* Should be called after unmask to avoid losing events.
	144	* If backend does not support masking,
	145	* must check in frontend instead.
	146	*/
	147	bool (guest_notifier_pending)(VirtIODevice vdev, int n);
	148	/* Mask/unmask events from this vq. Any events reported
	149	* while masked will become pending.
	150	* If backend does not support masking,
	151	* must mask in frontend instead.
	152	*/
	153	void (guest_notifier_mask)(VirtIODevice vdev, int n, bool mask);
	154
967f97fa	155	VirtQueue *vq;
53c25cea	156	const VirtIOBindings *binding;
d2a0ccc6	157	DeviceState *binding_opaque;
53c25cea	158	uint16_t device_id;
85cf2a8d MT	159	bool vm_running;
85cf2a8d MT	160	VMChangeStateEntry *vmstate;
967f97fa AL	161	};
967f97fa AL	162
8e05db92 FK	163	typedef struct VirtioDeviceClass {
	164	/* This is what a VirtioDevice must implement */
	165	DeviceClass parent;
	166	int (init)(VirtIODevice vdev);
	167	uint32_t (get_features)(VirtIODevice vdev, uint32_t requested_features);
	168	uint32_t (bad_features)(VirtIODevice vdev);
	169	void (set_features)(VirtIODevice vdev, uint32_t val);
	170	void (get_config)(VirtIODevice vdev, uint8_t *config);
	171	void (set_config)(VirtIODevice vdev, const uint8_t *config);
	172	void (reset)(VirtIODevice vdev);
	173	void (set_status)(VirtIODevice vdev, uint8_t val);
	174	} VirtioDeviceClass;
	175
	176	void virtio_init(VirtIODevice vdev, const char name,
	177	uint16_t device_id, size_t config_size);
	178	void virtio_common_cleanup(VirtIODevice *vdev);
	179
967f97fa AL	180	VirtQueue virtio_add_queue(VirtIODevice vdev, int queue_size,
	181	void (handle_output)(VirtIODevice ,
	182	VirtQueue *));
	183
f23fd811 JW	184	void virtio_del_queue(VirtIODevice *vdev, int n);
f23fd811 JW	185
967f97fa AL	186	void virtqueue_push(VirtQueue vq, const VirtQueueElement elem,
	187	unsigned int len);
	188	void virtqueue_flush(VirtQueue *vq, unsigned int count);
	189	void virtqueue_fill(VirtQueue vq, const VirtQueueElement elem,
	190	unsigned int len, unsigned int idx);
	191
a8170e5e	192	void virtqueue_map_sg(struct iovec sg, hwaddr addr,
42fb2e07	193	size_t num_sg, int is_write);
967f97fa	194	int virtqueue_pop(VirtQueue vq, VirtQueueElement elem);
0d8d7690 AS	195	int virtqueue_avail_bytes(VirtQueue *vq, unsigned int in_bytes,
	196	unsigned int out_bytes);
	197	void virtqueue_get_avail_bytes(VirtQueue vq, unsigned int in_bytes,
e1f7b481 MT	198	unsigned int *out_bytes,
e1f7b481 MT	199	unsigned max_in_bytes, unsigned max_out_bytes);
967f97fa AL	200
	201	void virtio_notify(VirtIODevice vdev, VirtQueue vq);
	202
	203	void virtio_save(VirtIODevice vdev, QEMUFile f);
	204
7055e687	205	int virtio_load(VirtIODevice vdev, QEMUFile f);
967f97fa	206
b946a153 AL	207	void virtio_cleanup(VirtIODevice *vdev);
b946a153 AL	208
967f97fa AL	209	void virtio_notify_config(VirtIODevice *vdev);
	210
	211	void virtio_queue_set_notification(VirtQueue *vq, int enable);
	212
	213	int virtio_queue_ready(VirtQueue *vq);
	214
	215	int virtio_queue_empty(VirtQueue *vq);
	216
53c25cea PB	217	/* Host binding interface. */
	218
	219	VirtIODevice virtio_common_init(const char name, uint16_t device_id,
	220	size_t config_size, size_t struct_size);
	221	uint32_t virtio_config_readb(VirtIODevice *vdev, uint32_t addr);
	222	uint32_t virtio_config_readw(VirtIODevice *vdev, uint32_t addr);
	223	uint32_t virtio_config_readl(VirtIODevice *vdev, uint32_t addr);
	224	void virtio_config_writeb(VirtIODevice *vdev, uint32_t addr, uint32_t data);
	225	void virtio_config_writew(VirtIODevice *vdev, uint32_t addr, uint32_t data);
	226	void virtio_config_writel(VirtIODevice *vdev, uint32_t addr, uint32_t data);
a8170e5e AK	227	void virtio_queue_set_addr(VirtIODevice *vdev, int n, hwaddr addr);
a8170e5e AK	228	hwaddr virtio_queue_get_addr(VirtIODevice *vdev, int n);
53c25cea PB	229	int virtio_queue_get_num(VirtIODevice *vdev, int n);
53c25cea PB	230	void virtio_queue_notify(VirtIODevice *vdev, int n);
7055e687 MT	231	uint16_t virtio_queue_vector(VirtIODevice *vdev, int n);
7055e687 MT	232	void virtio_queue_set_vector(VirtIODevice *vdev, int n, uint16_t vector);
4e1837f8	233	void virtio_set_status(VirtIODevice *vdev, uint8_t val);
53c25cea PB	234	void virtio_reset(void *opaque);
53c25cea PB	235	void virtio_update_irq(VirtIODevice *vdev);
ad0c9332	236	int virtio_set_features(VirtIODevice *vdev, uint32_t val);
53c25cea PB	237
53c25cea PB	238	void virtio_bind_device(VirtIODevice vdev, const VirtIOBindings binding,
d2a0ccc6	239	DeviceState *opaque);
53c25cea PB	240
53c25cea PB	241	/* Base devices. */
12c5674b PB	242	typedef struct VirtIOBlkConf VirtIOBlkConf;
12c5674b PB	243	VirtIODevice virtio_blk_init(DeviceState dev, VirtIOBlkConf *blk);
f0c07c7c AW	244	struct virtio_net_conf;
	245	VirtIODevice virtio_net_init(DeviceState dev, NICConf *conf,
	246	struct virtio_net_conf *net);
6b331efb AS	247	typedef struct virtio_serial_conf virtio_serial_conf;
6b331efb AS	248	VirtIODevice virtio_serial_init(DeviceState dev, virtio_serial_conf *serial);
53c25cea	249	VirtIODevice virtio_balloon_init(DeviceState dev);
973abc7f SH	250	typedef struct VirtIOSCSIConf VirtIOSCSIConf;
973abc7f SH	251	VirtIODevice virtio_scsi_init(DeviceState dev, VirtIOSCSIConf *conf);
16c915ba AS	252	typedef struct VirtIORNGConf VirtIORNGConf;
16c915ba AS	253	VirtIODevice virtio_rng_init(DeviceState dev, VirtIORNGConf *conf);
9f107513 AL	254	#ifdef CONFIG_LINUX
	255	VirtIODevice virtio_9p_init(DeviceState dev, V9fsConf *conf);
	256	#endif
	257
53c25cea	258
97b15621	259	void virtio_net_exit(VirtIODevice *vdev);
9d0d3138	260	void virtio_blk_exit(VirtIODevice *vdev);
8b53a865	261	void virtio_serial_exit(VirtIODevice *vdev);
855d7e25	262	void virtio_balloon_exit(VirtIODevice *vdev);
973abc7f	263	void virtio_scsi_exit(VirtIODevice *vdev);
16c915ba	264	void virtio_rng_exit(VirtIODevice *vdev);
97b15621	265
8172539d MT	266	#define DEFINE_VIRTIO_COMMON_FEATURES(_state, _field) \
8172539d MT	267	DEFINE_PROP_BIT("indirect_desc", _state, _field, \
bcbabae8 MT	268	VIRTIO_RING_F_INDIRECT_DESC, true), \
	269	DEFINE_PROP_BIT("event_idx", _state, _field, \
	270	VIRTIO_RING_F_EVENT_IDX, true)
8172539d	271
a8170e5e AK	272	hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n);
	273	hwaddr virtio_queue_get_avail_addr(VirtIODevice *vdev, int n);
	274	hwaddr virtio_queue_get_used_addr(VirtIODevice *vdev, int n);
	275	hwaddr virtio_queue_get_ring_addr(VirtIODevice *vdev, int n);
	276	hwaddr virtio_queue_get_desc_size(VirtIODevice *vdev, int n);
	277	hwaddr virtio_queue_get_avail_size(VirtIODevice *vdev, int n);
	278	hwaddr virtio_queue_get_used_size(VirtIODevice *vdev, int n);
	279	hwaddr virtio_queue_get_ring_size(VirtIODevice *vdev, int n);
1cbdabe2 MT	280	uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
	281	void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
	282	VirtQueue virtio_get_queue(VirtIODevice vdev, int n);
c80decdb	283	int virtio_queue_get_id(VirtQueue *vq);
1cbdabe2	284	EventNotifier virtio_queue_get_guest_notifier(VirtQueue vq);
15b2bd18 PB	285	void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
15b2bd18 PB	286	bool with_irqfd);
1cbdabe2	287	EventNotifier virtio_queue_get_host_notifier(VirtQueue vq);
26b9b5fe PB	288	void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign,
26b9b5fe PB	289	bool set_handler);
25db9ebe	290	void virtio_queue_notify_vq(VirtQueue *vq);
1cbdabe2	291	void virtio_irq(VirtQueue *vq);
967f97fa	292	#endif