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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Define SMCCC Arch function IDs for CLEAN_INV_MEMREGION and its ATTRIBUTES call, and add RATE_LIMITED/BUSY return codes from DEN0028 for callers that need transient error handling. Signed-off-by: Srirangan Madhavan Reviewed-by: Jonathan Cameron Reviewed-by: Bence Csókás Reviewed-by: Andre Przywara --- include/linux/arm-smccc.h | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 4de81848fe2e..2e205320d88a 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -116,6 +116,22 @@ ARM_SMCCC_SMC_32, \ ARM_SMCCC_OWNER_CPU, 0x10) +/* + * DEN0028 v1.7 defines these cache maintenance functions as SMC64 + * because they carry 64-bit memory range arguments. + */ +#define ARM_SMCCC_ARCH_CLEAN_INV_MEMREGION \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_ARCH, \ + 0x5) + +#define ARM_SMCCC_ARCH_CLEAN_INV_MEMREGION_ATTRIBUTES \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_ARCH, \ + 0x6) + #define ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID \ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ ARM_SMCCC_SMC_32, \ @@ -305,13 +321,14 @@ 0x53) /* - * Return codes defined in ARM DEN 0070A - * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C + * Return codes defined by Arm SMCCC (DEN0028 v1.7). */ #define SMCCC_RET_SUCCESS 0 #define SMCCC_RET_NOT_SUPPORTED -1 #define SMCCC_RET_NOT_REQUIRED -2 #define SMCCC_RET_INVALID_PARAMETER -3 +#define SMCCC_RET_RATE_LIMITED -4 +#define SMCCC_RET_BUSY -5 #ifndef __ASSEMBLY__ -- 2.43.0