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virtio: vioqueue_t

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Matheus
2023-12-31 16:10:32 -03:00
parent e49f617a90
commit 69978904b8
3 changed files with 41 additions and 33 deletions
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kernel-src/include/kernel/virtio.h
+15 -9
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@@ -36,11 +36,17 @@ typedef struct {
size_t notifymultiplier;
} viodevice_t;
typedef struct {
void *address;
size_t size;
uint16_t *notify;
uint16_t lastusedindex;
} vioqueue_t;
void virtio_init();
size_t virtio_queuesize(viodevice_t *viodevice, int queue);
uint16_t *virtio_queuenotifyaddress(viodevice_t *viodevice, int queue);
void virtio_enablequeue(viodevice_t *viodevice, int queue);
void *virtio_createqueue(viodevice_t *viodevice, int queue, size_t size, int msix);
void *virtio_createqueue(viodevice_t *viodevice, vioqueue_t *vioqueue, int queue, size_t size, int msix);
void virtio_enabledevice(viodevice_t *viodevice);
#define VIO_CONFIG_STATUS_SET(x, v) (x)->config->status |= v
@@ -97,12 +103,12 @@ struct {
*/
#define VIO_QUEUE_BYTESIZE(s) (sizeof(viobuffer_t) * (s) + sizeof(uint16_t) * ((s) + 6) + sizeof(viousedentry_t) * (s))
#define VIO_QUEUE_BUFFERS(q, s) ((volatile viobuffer_t *)(q))
#define VIO_QUEUE_DRV(q, s) ((volatile uint16_t *)((uintptr_t)(q) + (s) * sizeof(viobuffer_t)))
#define VIO_QUEUE_DRV_IDX(q, s) ((volatile uint16_t *)((uintptr_t)(q) + (s) * sizeof(viobuffer_t)))[1]
#define VIO_QUEUE_DRV_RING(q, s) ((volatile uint16_t *)((uintptr_t)(q) + (s) * sizeof(viobuffer_t) + 2 * sizeof(uint16_t)))
#define VIO_QUEUE_DEV(q, s) ((volatile uint16_t *)((uintptr_t)(q) + (s) * sizeof(viobuffer_t) + sizeof(uint16_t) * ((s) + 3 + (1 - ((s) % 2)))))
#define VIO_QUEUE_DEV_IDX(q, s) ((volatile uint16_t *)((uintptr_t)(q) + (s) * sizeof(viobuffer_t) + sizeof(uint16_t) * ((s) + 3 + (1 - ((s) % 2)))))[1]
#define VIO_QUEUE_DEV_RING(q, s) ((volatile viousedentry_t *)((uintptr_t)(q) + (s) * sizeof(viobuffer_t) + sizeof(uint16_t) * ((s) + 5 + (1 - ((s) % 2)))))
#define VIO_QUEUE_BUFFERS(q) ((volatile viobuffer_t *)(q)->address)
#define VIO_QUEUE_DRV(q) ((volatile uint16_t *)((uintptr_t)(q)->address + (q)->size * sizeof(viobuffer_t)))
#define VIO_QUEUE_DRV_IDX(q) ((volatile uint16_t *)((uintptr_t)(q)->address + (q)->size * sizeof(viobuffer_t)))[1]
#define VIO_QUEUE_DRV_RING(q) ((volatile uint16_t *)((uintptr_t)(q)->address + (q)->size * sizeof(viobuffer_t) + 2 * sizeof(uint16_t)))
#define VIO_QUEUE_DEV(q) ((volatile uint16_t *)((uintptr_t)(q)->address + (q)->size * sizeof(viobuffer_t) + sizeof(uint16_t) * ((q)->size + 3 + (1 - ((q)->size % 2)))))
#define VIO_QUEUE_DEV_IDX(q) ((volatile uint16_t *)((uintptr_t)(q)->address + (q)->size * sizeof(viobuffer_t) + sizeof(uint16_t) * ((q)->size + 3 + (1 - ((q)->size % 2)))))[1]
#define VIO_QUEUE_DEV_RING(q) ((volatile viousedentry_t *)((uintptr_t)(q)->address + (q)->size * sizeof(viobuffer_t) + sizeof(uint16_t) * ((q)->size + 5 + (1 - ((q)->size % 2)))))
#endif