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45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _LIGHT_MAILBOX_H
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#define _LIGHT_MAILBOX_H
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#include <linux/virtio_types.h>
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/* Feature bits */
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#define VIRTIO_MAILBOX_F_CHAN_NUM 1 /* Indicates maximum mailbox channels */
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#define VIRTIO_MAILBOX_F_MSG_SIZE 2 /* Indicates msg size for one transport */
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/* Default values when feature not set */
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#define VIRTIO_MAILBOX_MSG_SIZE_DEFAULT 128
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#define VIRTIO_MAILBOX_CHAN_NUM_DEFAULT 8
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#define VIRTIO_MAILBOX_CHAN_MAX 32
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struct virtio_mailbox_config {
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__virtio32 chan_num;
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__virtio32 msg_size;
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__virtio32 msg_g[VIRTIO_MAILBOX_CHAN_MAX];
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__virtio32 msg_h[VIRTIO_MAILBOX_CHAN_MAX];
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__virtio32 ack_g[VIRTIO_MAILBOX_CHAN_MAX];
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__virtio32 ack_h[VIRTIO_MAILBOX_CHAN_MAX];
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} __attribute__((packed));
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static const unsigned int offsets[] = {
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offsetof(struct virtio_mailbox_config, chan_num),
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offsetof(struct virtio_mailbox_config, msg_size),
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offsetof(struct virtio_mailbox_config, msg_g),
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offsetof(struct virtio_mailbox_config, msg_h),
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offsetof(struct virtio_mailbox_config, ack_g),
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offsetof(struct virtio_mailbox_config, ack_h),
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};
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enum offsets_index {
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CHAN_NUM,
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MSG_SIZE,
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MSG_G,
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MSG_H,
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ACK_G,
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ACK_H,
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};
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#endif
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