diff options
Diffstat (limited to 'qemu/include/hw/virtio/virtio.h')
| -rw-r--r-- | qemu/include/hw/virtio/virtio.h | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/qemu/include/hw/virtio/virtio.h b/qemu/include/hw/virtio/virtio.h deleted file mode 100644 index 6a37065c2..000000000 --- a/qemu/include/hw/virtio/virtio.h +++ /dev/null @@ -1,299 +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" -#include "standard-headers/linux/virtio_config.h" -#include "standard-headers/linux/virtio_ring.h" - -/* A guest should never accept this. It implies negotiation is broken. */ -#define VIRTIO_F_BAD_FEATURE 30 - -#define VIRTIO_LEGACY_FEATURES ((0x1ULL << VIRTIO_F_BAD_FEATURE) | \ - (0x1ULL << VIRTIO_F_NOTIFY_ON_EMPTY) | \ - (0x1ULL << VIRTIO_F_ANY_LAYOUT)) - -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; - hwaddr *out_addr; - struct iovec *in_sg; - struct iovec *out_sg; -} VirtQueueElement; - -#define VIRTIO_QUEUE_MAX 1024 - -#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) - -enum virtio_device_endian { - VIRTIO_DEVICE_ENDIAN_UNKNOWN, - VIRTIO_DEVICE_ENDIAN_LITTLE, - VIRTIO_DEVICE_ENDIAN_BIG, -}; - -struct VirtIODevice -{ - DeviceState parent_obj; - const char *name; - uint8_t status; - uint8_t isr; - uint16_t queue_sel; - uint64_t guest_features; - uint64_t host_features; - size_t config_len; - void *config; - uint16_t config_vector; - uint32_t generation; - int nvectors; - VirtQueue *vq; - uint16_t device_id; - bool vm_running; - VMChangeStateEntry *vmstate; - char *bus_name; - uint8_t device_endian; - bool use_guest_notifier_mask; - QLIST_HEAD(, VirtQueue) *vector_queues; -}; - -typedef struct VirtioDeviceClass { - /*< private >*/ - DeviceClass parent; - /*< public >*/ - - /* This is what a VirtioDevice must implement */ - DeviceRealize realize; - DeviceUnrealize unrealize; - uint64_t (*get_features)(VirtIODevice *vdev, - uint64_t requested_features, - Error **errp); - uint64_t (*bad_features)(VirtIODevice *vdev); - void (*set_features)(VirtIODevice *vdev, uint64_t val); - int (*validate_features)(VirtIODevice *vdev); - 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); - void (*save)(VirtIODevice *vdev, QEMUFile *f); - int (*load)(VirtIODevice *vdev, QEMUFile *f, int version_id); -} VirtioDeviceClass; - -void virtio_instance_init_common(Object *proxy_obj, void *data, - size_t vdev_size, const char *vdev_name); - -void virtio_init(VirtIODevice *vdev, const char *name, - uint16_t device_id, size_t config_size); -void virtio_cleanup(VirtIODevice *vdev); - -/* Set the child bus name. */ -void virtio_device_set_child_bus_name(VirtIODevice *vdev, char *bus_name); - -VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, - void (*handle_output)(VirtIODevice *, - VirtQueue *)); - -void virtio_del_queue(VirtIODevice *vdev, int n); - -void *virtqueue_alloc_element(size_t sz, unsigned out_num, unsigned in_num); -void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem, - unsigned int len); -void virtqueue_flush(VirtQueue *vq, unsigned int count); -void virtqueue_discard(VirtQueue *vq, const VirtQueueElement *elem, - unsigned int len); -void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem, - unsigned int len, unsigned int idx); - -void virtqueue_map(VirtQueueElement *elem); -void *virtqueue_pop(VirtQueue *vq, size_t sz); -void *qemu_get_virtqueue_element(QEMUFile *f, size_t sz); -void qemu_put_virtqueue_element(QEMUFile *f, 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); - -bool virtio_should_notify(VirtIODevice *vdev, VirtQueue *vq); -void virtio_notify(VirtIODevice *vdev, VirtQueue *vq); - -void virtio_save(VirtIODevice *vdev, QEMUFile *f); - -int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id); - -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. */ - -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); -uint32_t virtio_config_modern_readb(VirtIODevice *vdev, uint32_t addr); -uint32_t virtio_config_modern_readw(VirtIODevice *vdev, uint32_t addr); -uint32_t virtio_config_modern_readl(VirtIODevice *vdev, uint32_t addr); -void virtio_config_modern_writeb(VirtIODevice *vdev, - uint32_t addr, uint32_t data); -void virtio_config_modern_writew(VirtIODevice *vdev, - uint32_t addr, uint32_t data); -void virtio_config_modern_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); -void virtio_queue_set_num(VirtIODevice *vdev, int n, int num); -int virtio_queue_get_num(VirtIODevice *vdev, int n); -int virtio_get_num_queues(VirtIODevice *vdev); -void virtio_queue_set_rings(VirtIODevice *vdev, int n, hwaddr desc, - hwaddr avail, hwaddr used); -void virtio_queue_update_rings(VirtIODevice *vdev, int n); -void virtio_queue_set_align(VirtIODevice *vdev, int n, int align); -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); -int 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, uint64_t val); - -/* Base devices. */ -typedef struct VirtIOBlkConf VirtIOBlkConf; -struct virtio_net_conf; -typedef struct virtio_serial_conf virtio_serial_conf; -typedef struct virtio_input_conf virtio_input_conf; -typedef struct VirtIOSCSIConf VirtIOSCSIConf; -typedef struct VirtIORNGConf VirtIORNGConf; - -#define DEFINE_VIRTIO_COMMON_FEATURES(_state, _field) \ - DEFINE_PROP_BIT64("indirect_desc", _state, _field, \ - VIRTIO_RING_F_INDIRECT_DESC, true), \ - DEFINE_PROP_BIT64("event_idx", _state, _field, \ - VIRTIO_RING_F_EVENT_IDX, true), \ - DEFINE_PROP_BIT64("notify_on_empty", _state, _field, \ - VIRTIO_F_NOTIFY_ON_EMPTY, true), \ - DEFINE_PROP_BIT64("any_layout", _state, _field, \ - VIRTIO_F_ANY_LAYOUT, 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); -void virtio_queue_invalidate_signalled_used(VirtIODevice *vdev, int n); -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_aio_set_host_notifier_handler(VirtQueue *vq, AioContext *ctx, - void (*fn)(VirtIODevice *, - VirtQueue *)); -void virtio_irq(VirtQueue *vq); -VirtQueue *virtio_vector_first_queue(VirtIODevice *vdev, uint16_t vector); -VirtQueue *virtio_vector_next_queue(VirtQueue *vq); - -static inline void virtio_add_feature(uint64_t *features, unsigned int fbit) -{ - assert(fbit < 64); - *features |= (1ULL << fbit); -} - -static inline void virtio_clear_feature(uint64_t *features, unsigned int fbit) -{ - assert(fbit < 64); - *features &= ~(1ULL << fbit); -} - -static inline bool virtio_has_feature(uint64_t features, unsigned int fbit) -{ - assert(fbit < 64); - return !!(features & (1ULL << fbit)); -} - -static inline bool virtio_vdev_has_feature(VirtIODevice *vdev, - unsigned int fbit) -{ - return virtio_has_feature(vdev->guest_features, fbit); -} - -static inline bool virtio_host_has_feature(VirtIODevice *vdev, - unsigned int fbit) -{ - return virtio_has_feature(vdev->host_features, fbit); -} - -static inline bool virtio_is_big_endian(VirtIODevice *vdev) -{ - if (!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { - assert(vdev->device_endian != VIRTIO_DEVICE_ENDIAN_UNKNOWN); - return vdev->device_endian == VIRTIO_DEVICE_ENDIAN_BIG; - } - /* Devices conforming to VIRTIO 1.0 or later are always LE. */ - return false; -} -#endif |