1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef _ASM_POWERPC_VPHN_H
3#define _ASM_POWERPC_VPHN_H
4
5/* The H_HOME_NODE_ASSOCIATIVITY h_call returns 6 64-bit registers. */
6#define VPHN_REGISTER_COUNT 6
7
8/*
9 * 6 64-bit registers unpacked into up to 24 be32 associativity values. To
10 * form the complete property we have to add the length in the first cell.
11 */
12#define VPHN_ASSOC_BUFSIZE (VPHN_REGISTER_COUNT*sizeof(u64)/sizeof(u16) + 1)
13
14/*
15 * The H_HOME_NODE_ASSOCIATIVITY hcall takes two values for flags:
16 * 1 for retrieving associativity information for a guest cpu
17 * 2 for retrieving associativity information for a host/hypervisor cpu
18 */
19#define VPHN_FLAG_VCPU	1
20#define VPHN_FLAG_PCPU	2
21
22long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity);
23
24#endif // _ASM_POWERPC_VPHN_H
25