diff options
Diffstat (limited to 'arch/powerpc/mm/vphn.h')
-rw-r--r-- | arch/powerpc/mm/vphn.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/mm/vphn.h b/arch/powerpc/mm/vphn.h new file mode 100644 index 000000000..f9ffdb394 --- /dev/null +++ b/arch/powerpc/mm/vphn.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ARCH_POWERPC_MM_VPHN_H_ +#define _ARCH_POWERPC_MM_VPHN_H_ + +/* The H_HOME_NODE_ASSOCIATIVITY h_call returns 6 64-bit registers. + */ +#define VPHN_REGISTER_COUNT 6 + +/* + * 6 64-bit registers unpacked into up to 24 be32 associativity values. To + * form the complete property we have to add the length in the first cell. + */ +#define VPHN_ASSOC_BUFSIZE (VPHN_REGISTER_COUNT*sizeof(u64)/sizeof(u16) + 1) + +extern int vphn_unpack_associativity(const long *packed, __be32 *unpacked); + +#endif |