diff options
Diffstat (limited to 'tests/libqos/virtio.h')
| -rw-r--r-- | tests/libqos/virtio.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/tests/libqos/virtio.h b/tests/libqos/virtio.h new file mode 100644 index 00000000..01012787 --- /dev/null +++ b/tests/libqos/virtio.h @@ -0,0 +1,193 @@ +/* + * libqos virtio definitions + * + * Copyright (c) 2014 Marc Marí + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef LIBQOS_VIRTIO_H +#define LIBQOS_VIRTIO_H + +#include "libqos/malloc.h" + +#define QVIRTIO_VENDOR_ID 0x1AF4 + +#define QVIRTIO_RESET 0x0 +#define QVIRTIO_ACKNOWLEDGE 0x1 +#define QVIRTIO_DRIVER 0x2 +#define QVIRTIO_DRIVER_OK 0x4 + +#define QVIRTIO_NET_DEVICE_ID 0x1 +#define QVIRTIO_BLK_DEVICE_ID 0x2 +#define QVIRTIO_CONSOLE_DEVICE_ID 0x3 +#define QVIRTIO_RNG_DEVICE_ID 0x4 +#define QVIRTIO_BALLOON_DEVICE_ID 0x5 +#define QVIRTIO_RPMSG_DEVICE_ID 0x7 +#define QVIRTIO_SCSI_DEVICE_ID 0x8 +#define QVIRTIO_9P_DEVICE_ID 0x9 + +#define QVIRTIO_F_NOTIFY_ON_EMPTY 0x01000000 +#define QVIRTIO_F_ANY_LAYOUT 0x08000000 +#define QVIRTIO_F_RING_INDIRECT_DESC 0x10000000 +#define QVIRTIO_F_RING_EVENT_IDX 0x20000000 +#define QVIRTIO_F_BAD_FEATURE 0x40000000 + +#define QVRING_DESC_F_NEXT 0x1 +#define QVRING_DESC_F_WRITE 0x2 +#define QVRING_DESC_F_INDIRECT 0x4 + +#define QVIRTIO_F_NOTIFY_ON_EMPTY 0x01000000 +#define QVIRTIO_F_ANY_LAYOUT 0x08000000 +#define QVIRTIO_F_RING_INDIRECT_DESC 0x10000000 +#define QVIRTIO_F_RING_EVENT_IDX 0x20000000 +#define QVIRTIO_F_BAD_FEATURE 0x40000000 + +#define QVRING_AVAIL_F_NO_INTERRUPT 1 + +#define QVRING_USED_F_NO_NOTIFY 1 + +typedef struct QVirtioDevice { + /* Device type */ + uint16_t device_type; +} QVirtioDevice; + +typedef struct QVRingDesc { + uint64_t addr; + uint32_t len; + uint16_t flags; + uint16_t next; +} QVRingDesc; + +typedef struct QVRingAvail { + uint16_t flags; + uint16_t idx; + uint16_t ring[0]; /* This is an array of uint16_t */ + uint16_t used_event; +} QVRingAvail; + +typedef struct QVRingUsedElem { + uint32_t id; + uint32_t len; +} QVRingUsedElem; + +typedef struct QVRingUsed { + uint16_t flags; + uint16_t idx; + QVRingUsedElem ring[0]; /* This is an array of QVRingUsedElem structs */ + uint16_t avail_event; +} QVRingUsed; + +typedef struct QVirtQueue { + uint64_t desc; /* This points to an array of QVRingDesc */ + uint64_t avail; /* This points to a QVRingAvail */ + uint64_t used; /* This points to a QVRingDesc */ + uint16_t index; + uint32_t size; + uint32_t free_head; + uint32_t num_free; + uint32_t align; + bool indirect; + bool event; +} QVirtQueue; + +typedef struct QVRingIndirectDesc { + uint64_t desc; /* This points to an array fo QVRingDesc */ + uint16_t index; + uint16_t elem; +} QVRingIndirectDesc; + +typedef struct QVirtioBus { + uint8_t (*config_readb)(QVirtioDevice *d, uint64_t addr); + uint16_t (*config_readw)(QVirtioDevice *d, uint64_t addr); + uint32_t (*config_readl)(QVirtioDevice *d, uint64_t addr); + uint64_t (*config_readq)(QVirtioDevice *d, uint64_t addr); + + /* Get features of the device */ + uint32_t (*get_features)(QVirtioDevice *d); + + /* Set features of the device */ + void (*set_features)(QVirtioDevice *d, uint32_t features); + + /* Get features of the guest */ + uint32_t (*get_guest_features)(QVirtioDevice *d); + + /* Get status of the device */ + uint8_t (*get_status)(QVirtioDevice *d); + + /* Set status of the device */ + void (*set_status)(QVirtioDevice *d, uint8_t status); + + /* Get the queue ISR status of the device */ + bool (*get_queue_isr_status)(QVirtioDevice *d, QVirtQueue *vq); + + /* Get the configuration ISR status of the device */ + bool (*get_config_isr_status)(QVirtioDevice *d); + + /* Select a queue to work on */ + void (*queue_select)(QVirtioDevice *d, uint16_t index); + + /* Get the size of the selected queue */ + uint16_t (*get_queue_size)(QVirtioDevice *d); + + /* Set the address of the selected queue */ + void (*set_queue_address)(QVirtioDevice *d, uint32_t pfn); + + /* Setup the virtqueue specified by index */ + QVirtQueue *(*virtqueue_setup)(QVirtioDevice *d, QGuestAllocator *alloc, + uint16_t index); + + /* Notify changes in virtqueue */ + void (*virtqueue_kick)(QVirtioDevice *d, QVirtQueue *vq); +} QVirtioBus; + +static inline uint32_t qvring_size(uint32_t num, uint32_t align) +{ + return ((sizeof(struct QVRingDesc) * num + sizeof(uint16_t) * (3 + num) + + align - 1) & ~(align - 1)) + + sizeof(uint16_t) * 3 + sizeof(struct QVRingUsedElem) * num; +} + +uint8_t qvirtio_config_readb(const QVirtioBus *bus, QVirtioDevice *d, + uint64_t addr); +uint16_t qvirtio_config_readw(const QVirtioBus *bus, QVirtioDevice *d, + uint64_t addr); +uint32_t qvirtio_config_readl(const QVirtioBus *bus, QVirtioDevice *d, + uint64_t addr); +uint64_t qvirtio_config_readq(const QVirtioBus *bus, QVirtioDevice *d, + uint64_t addr); +uint32_t qvirtio_get_features(const QVirtioBus *bus, QVirtioDevice *d); +void qvirtio_set_features(const QVirtioBus *bus, QVirtioDevice *d, + uint32_t features); + +void qvirtio_reset(const QVirtioBus *bus, QVirtioDevice *d); +void qvirtio_set_acknowledge(const QVirtioBus *bus, QVirtioDevice *d); +void qvirtio_set_driver(const QVirtioBus *bus, QVirtioDevice *d); +void qvirtio_set_driver_ok(const QVirtioBus *bus, QVirtioDevice *d); + +void qvirtio_wait_queue_isr(const QVirtioBus *bus, QVirtioDevice *d, + QVirtQueue *vq, gint64 timeout_us); +uint8_t qvirtio_wait_status_byte_no_isr(const QVirtioBus *bus, + QVirtioDevice *d, + QVirtQueue *vq, + uint64_t addr, + gint64 timeout_us); +void qvirtio_wait_config_isr(const QVirtioBus *bus, QVirtioDevice *d, + gint64 timeout_us); +QVirtQueue *qvirtqueue_setup(const QVirtioBus *bus, QVirtioDevice *d, + QGuestAllocator *alloc, uint16_t index); + +void qvring_init(const QGuestAllocator *alloc, QVirtQueue *vq, uint64_t addr); +QVRingIndirectDesc *qvring_indirect_desc_setup(QVirtioDevice *d, + QGuestAllocator *alloc, uint16_t elem); +void qvring_indirect_desc_add(QVRingIndirectDesc *indirect, uint64_t data, + uint32_t len, bool write); +uint32_t qvirtqueue_add(QVirtQueue *vq, uint64_t data, uint32_t len, bool write, + bool next); +uint32_t qvirtqueue_add_indirect(QVirtQueue *vq, QVRingIndirectDesc *indirect); +void qvirtqueue_kick(const QVirtioBus *bus, QVirtioDevice *d, QVirtQueue *vq, + uint32_t free_head); + +void qvirtqueue_set_used_event(QVirtQueue *vq, uint16_t idx); +#endif |