/* * Copyright (c) 2015, Linaro Limited * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * */#ifndef __LINUX_ARM_SMCCC_H#define __LINUX_ARM_SMCCC_H #include <linux/linkage.h>#include <linux/types.h> /* * This file provides common defines for ARM SMC Calling Convention as * specified in * http://infocenter.arm.com/help/topic/com.arm.doc.den0028a/index.html */ #define ARM_SMCCC_STD_CALL		0#define ARM_SMCCC_FAST_CALL		1#define ARM_SMCCC_TYPE_SHIFT		31 #define ARM_SMCCC_SMC_32		0#define ARM_SMCCC_SMC_64		1#define ARM_SMCCC_CALL_CONV_SHIFT	30 #define ARM_SMCCC_OWNER_MASK		0x3F#define ARM_SMCCC_OWNER_SHIFT		24 #define ARM_SMCCC_FUNC_MASK		0xFFFF #define ARM_SMCCC_IS_FAST_CALL(smc_val)	\	((smc_val) & (ARM_SMCCC_FAST_CALL << ARM_SMCCC_TYPE_SHIFT))#define ARM_SMCCC_IS_64(smc_val) \	((smc_val) & (ARM_SMCCC_SMC_64 << ARM_SMCCC_CALL_CONV_SHIFT))#define ARM_SMCCC_FUNC_NUM(smc_val)	((smc_val) & ARM_SMCCC_FUNC_MASK)#define ARM_SMCCC_OWNER_NUM(smc_val) \	(((smc_val) >> ARM_SMCCC_OWNER_SHIFT) & ARM_SMCCC_OWNER_MASK) #define ARM_SMCCC_CALL_VAL(type, calling_convention, owner, func_num) \	(((type) << ARM_SMCCC_TYPE_SHIFT) | \	((calling_convention) << ARM_SMCCC_CALL_CONV_SHIFT) | \	(((owner) & ARM_SMCCC_OWNER_MASK) << ARM_SMCCC_OWNER_SHIFT) | \	((func_num) & ARM_SMCCC_FUNC_MASK)) #define ARM_SMCCC_OWNER_ARCH		0#define ARM_SMCCC_OWNER_CPU		1#define ARM_SMCCC_OWNER_SIP		2#define ARM_SMCCC_OWNER_OEM		3#define ARM_SMCCC_OWNER_STANDARD	4#define ARM_SMCCC_OWNER_TRUSTED_APP	48#define ARM_SMCCC_OWNER_TRUSTED_APP_END	49#define ARM_SMCCC_OWNER_TRUSTED_OS	50#define ARM_SMCCC_OWNER_TRUSTED_OS_END	63 /** * struct arm_smccc_res - Result from SMC/HVC call * @a0-a3 result values from registers 0 to 3 */struct arm_smccc_res {	unsigned long a0;	unsigned long a1;	unsigned long a2;	unsigned long a3;}; /** * arm_smccc_smc() - make SMC calls * @a0-a7: arguments passed in registers 0 to 7 * @res: result values from registers 0 to 3 * * This function is used to make SMC calls following SMC Calling Convention. * The content of the supplied param are copied to registers 0 to 7 prior * to the SMC instruction. The return values are updated with the content * from register 0 to 3 on return from the SMC instruction. */asmlinkage void arm_smccc_smc(unsigned long a0, unsigned long a1,			unsigned long a2, unsigned long a3, unsigned long a4,			unsigned long a5, unsigned long a6, unsigned long a7,			struct arm_smccc_res *res); /** * arm_smccc_hvc() - make HVC calls * @a0-a7: arguments passed in registers 0 to 7 * @res: result values from registers 0 to 3 * * This function is used to make HVC calls following SMC Calling * Convention.  The content of the supplied param are copied to registers 0 * to 7 prior to the HVC instruction. The return values are updated with * the content from register 0 to 3 on return from the HVC instruction. */asmlinkage void arm_smccc_hvc(unsigned long a0, unsigned long a1,			unsigned long a2, unsigned long a3, unsigned long a4,			unsigned long a5, unsigned long a6, unsigned long a7,			struct arm_smccc_res *res); #endif /*__LINUX_ARM_SMCCC_H*/