| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| #ifndef _ASM_POWERPC_VPHN_H |
| #define _ASM_POWERPC_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) |
| |
| /* |
| * The H_HOME_NODE_ASSOCIATIVITY hcall takes two values for flags: |
| * 1 for retrieving associativity information for a guest cpu |
| * 2 for retrieving associativity information for a host/hypervisor cpu |
| */ |
| #define VPHN_FLAG_VCPU 1 |
| #define VPHN_FLAG_PCPU 2 |
| |
| long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity); |
| |
| #endif // _ASM_POWERPC_VPHN_H |
