72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
|
|
* udebug - debug ring buffer library
|
|
*
|
|
* Copyright (C) 2023 Felix Fietkau <nbd@nbd.name>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
#ifndef __UDEBUG_PROTO_H
|
|
#define __UDEBUG_PROTO_H
|
|
|
|
#include "udebug.h"
|
|
|
|
struct udebug_hdr {
|
|
uint32_t ring_size;
|
|
uint32_t data_size;
|
|
|
|
uint32_t format;
|
|
uint32_t sub_format;
|
|
|
|
uintptr_t flags[8 / sizeof(uintptr_t)];
|
|
uintptr_t notify;
|
|
|
|
uint32_t head_hi;
|
|
uint32_t head;
|
|
uint32_t data_head;
|
|
uint32_t data_used;
|
|
};
|
|
|
|
enum udebug_client_msg_type {
|
|
CL_MSG_RING_ADD,
|
|
CL_MSG_RING_REMOVE,
|
|
CL_MSG_RING_NOTIFY,
|
|
CL_MSG_GET_HANDLE,
|
|
CL_MSG_RING_GET,
|
|
CL_MSG_ERROR,
|
|
};
|
|
|
|
struct udebug_client_msg {
|
|
uint8_t type;
|
|
uint8_t _pad[3];
|
|
uint32_t id;
|
|
union {
|
|
struct {
|
|
uint32_t ring_size, data_size;
|
|
};
|
|
uint32_t notify_mask;
|
|
};
|
|
} __attribute__((packed, aligned(4)));
|
|
|
|
static inline struct udebug_ptr *
|
|
udebug_ring_ptr(struct udebug_hdr *hdr, uint32_t idx)
|
|
{
|
|
struct udebug_ptr *ring = (struct udebug_ptr *)&hdr[1];
|
|
return &ring[idx & (hdr->ring_size - 1)];
|
|
}
|
|
|
|
static inline void *udebug_buf_ptr(struct udebug_buf *buf, uint32_t ofs)
|
|
{
|
|
return buf->data + (ofs & (buf->data_size - 1));
|
|
}
|
|
|
|
#endif
|