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// SPDX-License-Identifier: MIT
/*
* Copyright © 2021 Intel Corporation
*/
#ifndef __INTEL_ALLOCATOR_MSGCHANNEL_H__
#define __INTEL_ALLOCATOR_MSGCHANNEL_H__
#include <sys/types.h>
#include <unistd.h>
#include <stdint.h>
enum reqtype {
REQ_STOP,
REQ_OPEN,
REQ_OPEN_AS,
REQ_CLOSE,
REQ_ADDRESS_RANGE,
REQ_ALLOC,
REQ_FREE,
REQ_IS_ALLOCATED,
REQ_RESERVE,
REQ_UNRESERVE,
REQ_RESERVE_IF_NOT_ALLOCATED,
REQ_IS_RESERVED,
};
enum resptype {
RESP_OPEN,
RESP_OPEN_AS,
RESP_CLOSE,
RESP_ADDRESS_RANGE,
RESP_ALLOC,
RESP_FREE,
RESP_IS_ALLOCATED,
RESP_RESERVE,
RESP_UNRESERVE,
RESP_IS_RESERVED,
RESP_RESERVE_IF_NOT_ALLOCATED,
};
struct alloc_req {
enum reqtype request_type;
/* Common */
pid_t tid;
uint64_t allocator_handle;
union {
struct {
int fd;
uint32_t ctx;
uint32_t vm;
uint64_t start;
uint64_t end;
uint8_t allocator_type;
uint8_t allocator_strategy;
uint64_t default_alignment;
} open;
struct {
uint32_t new_vm;
} open_as;
struct {
uint32_t handle;
uint64_t size;
uint64_t alignment;
uint8_t strategy;
} alloc;
struct {
uint32_t handle;
} free;
struct {
uint32_t handle;
uint64_t size;
uint64_t offset;
} is_allocated;
struct {
uint32_t handle;
uint64_t start;
uint64_t end;
} reserve, unreserve;
struct {
uint64_t start;
uint64_t end;
} is_reserved;
};
};
struct alloc_resp {
enum resptype response_type;
pid_t tid;
union {
struct {
uint64_t allocator_handle;
} open, open_as;
struct {
bool is_empty;
} close;
struct {
uint64_t start;
uint64_t end;
uint8_t direction;
} address_range;
struct {
uint64_t offset;
} alloc;
struct {
bool freed;
} free;
struct {
bool allocated;
} is_allocated;
struct {
bool reserved;
} reserve, is_reserved;
struct {
bool unreserved;
} unreserve;
struct {
bool allocated;
bool reserved;
} reserve_if_not_allocated;
};
};
struct msg_channel {
bool ready;
void *priv;
void (*init)(struct msg_channel *channel);
void (*deinit)(struct msg_channel *channel);
int (*send_req)(struct msg_channel *channel, struct alloc_req *request);
int (*recv_req)(struct msg_channel *channel, struct alloc_req *request);
int (*send_resp)(struct msg_channel *channel, struct alloc_resp *response);
int (*recv_resp)(struct msg_channel *channel, struct alloc_resp *response);
};
enum msg_channel_type {
CHANNEL_SYSVIPC_MSGQUEUE
};
struct msg_channel *intel_allocator_get_msgchannel(enum msg_channel_type type);
#endif
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