diff options
Diffstat (limited to 'tests/libqos/virtio.h')
| -rw-r--r-- | tests/libqos/virtio.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/tests/libqos/virtio.h b/tests/libqos/virtio.h index 8d7238bd91..aba5a1e12c 100644 --- a/tests/libqos/virtio.h +++ b/tests/libqos/virtio.h @@ -10,33 +10,117 @@ #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 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 */ +} 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 */ +} 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; +} QVirtQueue; + typedef struct QVirtioBus { uint8_t (*config_readb)(QVirtioDevice *d, void *addr); uint16_t (*config_readw)(QVirtioDevice *d, void *addr); uint32_t (*config_readl)(QVirtioDevice *d, void *addr); uint64_t (*config_readq)(QVirtioDevice *d, void *addr); + /* Get features of the device */ + uint32_t (*get_features)(QVirtioDevice *d); + + /* Get features of the device */ + void (*set_features)(QVirtioDevice *d, uint32_t features); + /* 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 ISR status of the device */ + uint8_t (*get_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, void *addr); uint16_t qvirtio_config_readw(const QVirtioBus *bus, QVirtioDevice *d, @@ -45,9 +129,24 @@ uint32_t qvirtio_config_readl(const QVirtioBus *bus, QVirtioDevice *d, void *addr); uint64_t qvirtio_config_readq(const QVirtioBus *bus, QVirtioDevice *d, void *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); + +bool qvirtio_wait_isr(const QVirtioBus *bus, QVirtioDevice *d, uint8_t mask, + uint64_t timeout); +QVirtQueue *qvirtqueue_setup(const QVirtioBus *bus, QVirtioDevice *d, + QGuestAllocator *alloc, uint16_t index); + +void qvring_init(const QGuestAllocator *alloc, QVirtQueue *vq, uint64_t addr); +uint32_t qvirtqueue_add(QVirtQueue *vq, uint64_t data, uint32_t len, bool write, + bool next); +void qvirtqueue_kick(const QVirtioBus *bus, QVirtioDevice *d, QVirtQueue *vq, + uint32_t free_head); #endif |