include/linux/arm-smccc.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
12  * This file provides common defines for ARM SMC Calling Convention as
16  * This code is up-to-date with version DEN 0028 C
146 #define SMCCC_RET_NOT_SUPPORTED			-1
147 #define SMCCC_RET_NOT_REQUIRED			-2
148 #define SMCCC_RET_INVALID_PARAMETER		-3
184  * struct arm_smccc_res - Result from SMC/HVC call
185  * @a0-a3 result values from registers 0 to 3
195  * struct arm_smccc_quirk - Contains quirk information
196  * @id: quirk identification
198  * @a6: Qualcomm quirk entry for returning post-smc call contents of a6
201 	int	id;  member
208  * __arm_smccc_smc() - make SMC calls
209  * @a0-a7: arguments passed in registers 0 to 7
213  * This function is used to make SMC calls following SMC Calling Convention.
215  * to the SMC instruction. The return values are updated with the content
216  * from register 0 to 3 on return from the SMC instruction.  An optional
225  * __arm_smccc_hvc() - make HVC calls
226  * @a0-a7: arguments passed in registers 0 to 7
230  * This function is used to make HVC calls following SMC Calling
252 #define SMCCC_SMC_INST	"smc	#0"
256 #include <asm/opcodes-sec.h>
257 #include <asm/opcodes-virt.h>
354  * arm_smccc_1_1_smc() - make an SMCCC v1.1 compliant SMC call
359  * @a0-a7: arguments passed in registers 0 to 7
362  * This macro is used to make SMC calls following SMC Calling Convention v1.1.
364  * to the SMC instruction. The return values are updated with the content
365  * from register 0 to 3 on return from the SMC instruction if not NULL.
370  * arm_smccc_1_1_hvc() - make an SMCCC v1.1 compliant HVC call
375  * @a0-a7: arguments passed in registers 0 to 7
378  * This macro is used to make HVC calls following SMC Calling Convention v1.1.
395 			___res->a0 = SMCCC_RET_NOT_SUPPORTED;		\
399  * arm_smccc_1_1_invoke() - make an SMCCC v1.1 compliant call
404  * @a0-a7: arguments passed in registers 0 to 7
407  * This macro will make either an HVC call or an SMC call depending on the
408  * current SMCCC conduit. If no valid conduit is available then -1