[linux-2.6-block.git] / arch / powerpc / mm / book3s64 / vphn.h

/* 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)

/*
 * 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

extern int vphn_unpack_associativity(const long *packed, __be32 *unpacked);

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
4b6cfb2a GK	2	#ifndef _ARCH_POWERPC_MM_VPHN_H_
	3	#define _ARCH_POWERPC_MM_VPHN_H_
	4
47d99948	5	/* The H_HOME_NODE_ASSOCIATIVITY h_call returns 6 64-bit registers. */
4b6cfb2a GK	6	#define VPHN_REGISTER_COUNT 6
	7
	8	/*
3338a65b GK	9	* 6 64-bit registers unpacked into up to 24 be32 associativity values. To
3338a65b GK	10	* form the complete property we have to add the length in the first cell.
4b6cfb2a	11	*/
3338a65b	12	#define VPHN_ASSOC_BUFSIZE (VPHN_REGISTER_COUNT*sizeof(u64)/sizeof(u16) + 1)
4b6cfb2a	13
ef34e0ef NR	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
4b6cfb2a GK	22	extern int vphn_unpack_associativity(const long packed, __be32 unpacked);
	23
	24	#endif