diff options
author | Will Deacon <will@kernel.org> | 2021-05-26 17:14:43 +0100 |
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committer | Will Deacon <will@kernel.org> | 2021-05-26 17:14:43 +0100 |
commit | 57ad4fe0859ec6dd15776cae6ee8a139492334fd (patch) | |
tree | 237be89d06de62603d88fff93ee30e994e26cb8d /include/linux/arm-smccc.h | |
parent | c4681547bcce777daf576925a966ffa824edd09d (diff) | |
parent | 3fdc0cb59d97f87e2cc708d424f1538e31744286 (diff) |
Merge branch 'for-next/ffa' into for-next/smccc
Merge in SMCCC update from Sudeep, which is a branch shared with arm-soc
for the FF-A driver work.
* for-next/ffa:
arm64: smccc: Add support for SMCCCv1.2 extended input/output registers
Diffstat (limited to 'include/linux/arm-smccc.h')
-rw-r--r-- | include/linux/arm-smccc.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 6861489a1890..5cef2b8b0479 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -227,6 +227,61 @@ struct arm_smccc_res { unsigned long a3; }; +#ifdef CONFIG_ARM64 +/** + * struct arm_smccc_1_2_regs - Arguments for or Results from SMC/HVC call + * @a0-a17 argument values from registers 0 to 17 + */ +struct arm_smccc_1_2_regs { + unsigned long a0; + unsigned long a1; + unsigned long a2; + unsigned long a3; + unsigned long a4; + unsigned long a5; + unsigned long a6; + unsigned long a7; + unsigned long a8; + unsigned long a9; + unsigned long a10; + unsigned long a11; + unsigned long a12; + unsigned long a13; + unsigned long a14; + unsigned long a15; + unsigned long a16; + unsigned long a17; +}; + +/** + * arm_smccc_1_2_hvc() - make HVC calls + * @args: arguments passed via struct arm_smccc_1_2_regs + * @res: result values via struct arm_smccc_1_2_regs + * + * This function is used to make HVC calls following SMC Calling Convention + * v1.2 or above. The content of the supplied param are copied from the + * structure to registers prior to the HVC instruction. The return values + * are updated with the content from registers on return from the HVC + * instruction. + */ +asmlinkage void arm_smccc_1_2_hvc(const struct arm_smccc_1_2_regs *args, + struct arm_smccc_1_2_regs *res); + +/** + * arm_smccc_1_2_smc() - make SMC calls + * @args: arguments passed via struct arm_smccc_1_2_regs + * @res: result values via struct arm_smccc_1_2_regs + * + * This function is used to make SMC calls following SMC Calling Convention + * v1.2 or above. The content of the supplied param are copied from the + * structure to registers prior to the SMC instruction. The return values + * are updated with the content from registers on return from the SMC + * instruction. + */ +asmlinkage void arm_smccc_1_2_smc(const struct arm_smccc_1_2_regs *args, + struct arm_smccc_1_2_regs *res); +#endif + /** * struct arm_smccc_quirk - Contains quirk information * @id: quirk identification |