Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Module interface for CPU features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright IBM Corp. 2015
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #ifndef __ASM_S390_CPUFEATURE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define __ASM_S390_CPUFEATURE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/elf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /* Hardware features on Linux on z Systems are indicated by facility bits that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * are mapped to the so-called machine flags.  Particular machine flags are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * then used to define ELF hardware capabilities; most notably hardware flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * that are essential for user space / glibc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * Restrict the set of exposed CPU features to ELF hardware capabilities for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * now.  Additional machine flags can be indicated by values larger than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * MAX_ELF_HWCAP_FEATURES.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define MAX_ELF_HWCAP_FEATURES	(8 * sizeof(elf_hwcap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define MAX_CPU_FEATURES	MAX_ELF_HWCAP_FEATURES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define cpu_feature(feat)	ilog2(HWCAP_S390_ ## feat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int cpu_have_feature(unsigned int nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #endif /* __ASM_S390_CPUFEATURE_H */