diff options
Diffstat (limited to 'hw/virtio.h')
| -rw-r--r-- | hw/virtio.h | 292 |
1 files changed, 0 insertions, 292 deletions
diff --git a/hw/virtio.h b/hw/virtio.h deleted file mode 100644 index fdbe9313a0..0000000000 --- a/hw/virtio.h +++ /dev/null @@ -1,292 +0,0 @@ -/* - * Virtio Support - * - * Copyright IBM, Corp. 2007 - * - * Authors: - * Anthony Liguori <aliguori@us.ibm.com> - * - * 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/hw.h" -#include "net/net.h" -#include "hw/qdev.h" -#include "sysemu/sysemu.h" -#include "qemu/event_notifier.h" -#ifdef CONFIG_VIRTFS -#include "hw/9pfs/virtio-9p-device.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; -struct virtio_net_conf; -VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf, - struct virtio_net_conf *net, - uint32_t host_features); -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_VIRTFS -VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf); -#endif - - -void virtio_net_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); -uint16_t virtio_get_queue_index(VirtQueue *vq); -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 |