65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
#ifndef _LINUX_VIRTWL_H
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#define _LINUX_VIRTWL_H
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#include <asm/ioctl.h>
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#include <linux/types.h>
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#define VIRTWL_SEND_MAX_ALLOCS 28
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#define VIRTWL_IOCTL_BASE 'w'
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#define VIRTWL_IO(nr) _IO(VIRTWL_IOCTL_BASE, nr)
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#define VIRTWL_IOR(nr, type) _IOR(VIRTWL_IOCTL_BASE, nr, type)
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#define VIRTWL_IOW(nr, type) _IOW(VIRTWL_IOCTL_BASE, nr, type)
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#define VIRTWL_IOWR(nr, type) _IOWR(VIRTWL_IOCTL_BASE, nr, type)
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enum virtwl_ioctl_new_type {
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VIRTWL_IOCTL_NEW_CTX, /* open a new wayland connection context */
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VIRTWL_IOCTL_NEW_ALLOC, /* create a new virtwl shm allocation */
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/* create a new virtwl pipe that is readable via the returned fd */
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VIRTWL_IOCTL_NEW_PIPE_READ,
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/* create a new virtwl pipe that is writable via the returned fd */
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VIRTWL_IOCTL_NEW_PIPE_WRITE,
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/* create a new virtwl dmabuf that is writable via the returned fd */
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VIRTWL_IOCTL_NEW_DMABUF,
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};
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struct virtwl_ioctl_new {
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__u32 type; /* VIRTWL_IOCTL_NEW_* */
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int fd; /* return fd */
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__u32 flags; /* currently always 0 */
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union {
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/* size of allocation if type == VIRTWL_IOCTL_NEW_ALLOC */
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__u32 size;
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/* buffer description if type == VIRTWL_IOCTL_NEW_DMABUF */
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struct {
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__u32 width; /* width in pixels */
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__u32 height; /* height in pixels */
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__u32 format; /* fourcc format */
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__u32 stride0; /* return stride0 */
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__u32 stride1; /* return stride1 */
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__u32 stride2; /* return stride2 */
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__u32 offset0; /* return offset0 */
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__u32 offset1; /* return offset1 */
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__u32 offset2; /* return offset2 */
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} dmabuf;
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};
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};
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struct virtwl_ioctl_txn {
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int fds[VIRTWL_SEND_MAX_ALLOCS];
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__u32 len;
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__u8 data[0];
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};
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struct virtwl_ioctl_dmabuf_sync {
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__u32 flags; /* synchronization flags (see dma-buf.h) */
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};
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#define VIRTWL_IOCTL_NEW VIRTWL_IOWR(0x00, struct virtwl_ioctl_new)
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#define VIRTWL_IOCTL_SEND VIRTWL_IOR(0x01, struct virtwl_ioctl_txn)
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#define VIRTWL_IOCTL_RECV VIRTWL_IOW(0x02, struct virtwl_ioctl_txn)
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#define VIRTWL_IOCTL_DMABUF_SYNC VIRTWL_IOR(0x03, \
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struct virtwl_ioctl_dmabuf_sync)
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#endif /* _LINUX_VIRTWL_H */
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