/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
 */
#ifndef __SMCINVOKE_OBJECT_H
#define __SMCINVOKE_OBJECT_H

#include <linux/types.h>

/*
 * Method bits are not modified by transport layers.  These describe the
 * method (member function) being requested by the client.
 */
#define OBJECT_OP_METHOD_MASK     (0x0000FFFFu)
#define OBJECT_OP_METHODID(op)    ((op) & OBJECT_OP_METHOD_MASK)
#define OBJECT_OP_RELEASE       (OBJECT_OP_METHOD_MASK - 0)
#define OBJECT_OP_RETAIN        (OBJECT_OP_METHOD_MASK - 1)
#define OBJECT_OP_MAP_REGION    0
#define OBJECT_OP_YIELD 1

#define OBJECT_COUNTS_MAX_BI   0xF
#define OBJECT_COUNTS_MAX_BO   0xF
#define OBJECT_COUNTS_MAX_OI   0xF
#define OBJECT_COUNTS_MAX_OO   0xF

/* unpack counts */

#define OBJECT_COUNTS_NUM_BI(k)  ((size_t) (((k) >> 0) & OBJECT_COUNTS_MAX_BI))
#define OBJECT_COUNTS_NUM_BO(k)  ((size_t) (((k) >> 4) & OBJECT_COUNTS_MAX_BO))
#define OBJECT_COUNTS_NUM_OI(k)  ((size_t) (((k) >> 8) & OBJECT_COUNTS_MAX_OI))
#define OBJECT_COUNTS_NUM_OO(k)  ((size_t) (((k) >> 12) & OBJECT_COUNTS_MAX_OO))
#define OBJECT_COUNTS_NUM_buffers(k)	\
			(OBJECT_COUNTS_NUM_BI(k) + OBJECT_COUNTS_NUM_BO(k))

#define OBJECT_COUNTS_NUM_objects(k)	\
			(OBJECT_COUNTS_NUM_OI(k) + OBJECT_COUNTS_NUM_OO(k))

/* Indices into args[] */

#define OBJECT_COUNTS_INDEX_BI(k)   0
#define OBJECT_COUNTS_INDEX_BO(k)		\
			(OBJECT_COUNTS_INDEX_BI(k) + OBJECT_COUNTS_NUM_BI(k))
#define OBJECT_COUNTS_INDEX_OI(k)		\
			(OBJECT_COUNTS_INDEX_BO(k) + OBJECT_COUNTS_NUM_BO(k))
#define OBJECT_COUNTS_INDEX_OO(k)		\
			(OBJECT_COUNTS_INDEX_OI(k) + OBJECT_COUNTS_NUM_OI(k))
#define OBJECT_COUNTS_TOTAL(k)		\
			(OBJECT_COUNTS_INDEX_OO(k) + OBJECT_COUNTS_NUM_OO(k))

#define OBJECT_COUNTS_PACK(in_bufs, out_bufs, in_objs, out_objs) \
	((uint32_t) ((in_bufs) | ((out_bufs) << 4) | \
			((in_objs) << 8) | ((out_objs) << 12)))


/* Object_invoke return codes */

#define OBJECT_isOK(err)        ((err) == 0)
#define OBJECT_isERROR(err)     ((err) != 0)

/* Generic error codes */

#define OBJECT_OK                  0   /* non-specific success code */
#define OBJECT_ERROR               1   /* non-specific error */
#define OBJECT_ERROR_INVALID       2   /* unsupported/unrecognized request */
#define OBJECT_ERROR_SIZE_IN       3   /* supplied buffer/string too large */
#define OBJECT_ERROR_SIZE_OUT      4   /* supplied output buffer too small */

#define OBJECT_ERROR_USERBASE     10   /* start of user-defined error range */

/* Transport layer error codes */

#define OBJECT_ERROR_DEFUNCT     -90   /* object no longer exists */
#define OBJECT_ERROR_ABORT       -91   /* calling thread must exit */
#define OBJECT_ERROR_BADOBJ      -92   /* invalid object context */
#define OBJECT_ERROR_NOSLOTS     -93   /* caller's object table full */
#define OBJECT_ERROR_MAXARGS     -94   /* too many args */
#define OBJECT_ERROR_MAXDATA     -95   /* buffers too large */
#define OBJECT_ERROR_UNAVAIL     -96   /* the request could not be processed */
#define OBJECT_ERROR_KMEM        -97   /* kernel out of memory */
#define OBJECT_ERROR_REMOTE      -98   /* local method sent to remote object */
#define OBJECT_ERROR_BUSY        -99   /* Object is busy */

#endif /* __SMCINVOKE_OBJECT_H */