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/*******************************************************************
* (c) Copyright 2011-2012 Discretix Technologies Ltd. *
* This software is protected by copyright, international *
* treaties and patents, and distributed under multiple licenses. *
* Any use of this Software as part of the Discretix CryptoCell or *
* Packet Engine products requires a commercial license. *
* Copies of this Software that are distributed with the Discretix *
* CryptoCell or Packet Engine product drivers, may be used in *
* accordance with a commercial license, or at the user's option, *
* used and redistributed under the terms and conditions of the GNU *
* General Public License ("GPL") version 2, as published by the *
* Free Software Foundation. *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY LIABILITY AND WARRANTY; without even the implied *
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* See the GNU General Public License version 2 for more details. *
* You should have received a copy of the GNU General Public *
* License version 2 along with this Software; if not, please write *
* to the Free Software Foundation, Inc., 59 Temple Place - Suite *
* 330, Boston, MA 02111-1307, USA. *
* Any copy or reproduction of this Software, as permitted under *
* the GNU General Public License version 2, must include this *
* Copyright Notice as well as any other notices provided under *
* the said license. *
********************************************************************/
#ifndef __SEP_RPC_H__
#define __SEP_RPC_H__
/* SeP RPC infrastructure API */
#ifdef __KERNEL__
#include <linux/types.h>
#else
#include "dx_pal_types.h"
#endif /*__KERNEL__*/
/* Maximum size of SeP RPC message in bytes */
#define SEP_RPC_MAX_MSG_SIZE 8191
#define SEP_RPC_MAX_WORKSPACE_SIZE 8191
/* The maximum allowed user memory references per function
(CRYS requires only 2, but GPAPI/TEE needs up to 4) */
#define SEP_RPC_MAX_MEMREF_PER_FUNC 4
/* If this macro is not provided by the includer of this file,
the log message would be dropped */
#ifndef SEP_RPC_LOG
#define SEP_RPC_LOG(format, ...) do {} while (0)
#endif
#define SEP_RPC_ASSERT(cond, inval_param_retcode) {\
if (!(cond)) {\
SEP_RPC_LOG("SEP_RPC_ASSERT: %s\n", #cond);\
return inval_param_retcode;\
} \
}
/* NOTE:
All data must be in little (SeP) endian */
enum seprpc_retcode {
SEPRPC_RET_OK = 0,
SEPRPC_RET_ERROR, /*Generic error code (not one of the others) */
SEPRPC_RET_EINVAL_AGENT, /* Unknown agent ID */
SEPRPC_RET_EINVAL_FUNC, /* Unknown function ID for given agent */
SEPRPC_RET_EINVAL, /* Invalid parameter */
SEPRPC_RET_ENORSC, /* Not enough resources to complete request */
SEPRPC_RET_RESERVE32 = 0x7FFFFFFF /* assure this enum is 32b */
};
enum seprpc_memref_type {
SEPRPC_MEMREF_NULL = 0, /* Invalid memory reference */
SEPRPC_MEMREF_EMBED = 1,/* Data embedded in parameters message */
SEPRPC_MEMREF_DLLI = 2,
SEPRPC_MEMREF_MLLI = 3,
SEPRPC_MEMREF_MAX = SEPRPC_MEMREF_MLLI,
SEPRPC_MEMREF_RESERVE32 = 0x7FFFFFFF /* assure this enum is 32b */
};
#pragma pack(push)
#pragma pack(4)
/* A strcuture to pass host memory reference */
struct seprpc_memref {
enum seprpc_memref_type ref_type;
u32 location;
u32 size;
u32 count;
/* SEPRPC_MEMREF_EMBED: location= offset in SepRpc_Params .
* size= data size in bytes. count= N/A */
/* SEPRPC_MEMREF_DLLI: location= DMA address of data in host memory.
* size= data size in bytes. count= N/A. */
/* SEPRPC_MEMREF_MLLI: location= DMA address of first MLLI table.
* size= size in bytes of first table.
* count= Num. of MLLI tables. */
};
struct seprpc_params {
u32 num_of_memrefs;/* Number of elements in the memRef array */
struct seprpc_memref memref[1];
/* This array is actually in the size of numOfMemRefs
* (i.e., it is just a placeholder that may be void) */
/* Following this array comes the function-specific parameters */
} __attribute__ ((__may_alias__));
#pragma pack(pop)
#endif /*__SEP_RPC_H__*/
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