[deliverable/linux.git] / arch / arm / kvm / hyp / hyp.h

/*
 * Copyright (C) 2015 - ARM Ltd
 * Author: Marc Zyngier <marc.zyngier@arm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __ARM_KVM_HYP_H__
#define __ARM_KVM_HYP_H__

#include <linux/compiler.h>
#include <linux/kvm_host.h>
#include <asm/kvm_mmu.h>

#define __hyp_text __section(.hyp.text) notrace

#define kern_hyp_va(v) (v)
#define hyp_kern_va(v) (v)

#define __ACCESS_CP15(CRn, Op1, CRm, Op2)	\
	"mrc", "mcr", __stringify(p15, Op1, %0, CRn, CRm, Op2), u32
#define __ACCESS_CP15_64(Op1, CRm)		\
	"mrrc", "mcrr", __stringify(p15, Op1, %Q0, %R0, CRm), u64

#define __write_sysreg(v, r, w, c, t)	asm volatile(w " " c : : "r" ((t)(v)))
#define write_sysreg(v, ...)		__write_sysreg(v, __VA_ARGS__)

#define __read_sysreg(r, w, c, t) ({				\
	t __val;						\
	asm volatile(r " " c : "=r" (__val));			\
	__val;							\
})
#define read_sysreg(...)		__read_sysreg(__VA_ARGS__)

#define VTTBR		__ACCESS_CP15_64(6, c2)
#define ICIALLUIS	__ACCESS_CP15(c7, 0, c1, 0)
#define TLBIALLIS	__ACCESS_CP15(c8, 0, c3, 0)
#define TLBIALLNSNHIS	__ACCESS_CP15(c8, 4, c3, 4)

#endif /* __ARM_KVM_HYP_H__ */
Commit	Line	Data
08dcbfda MZ	1	/*
	2	* Copyright (C) 2015 - ARM Ltd
	3	* Author: Marc Zyngier <marc.zyngier@arm.com>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	16	*/
	17
	18	#ifndef __ARM_KVM_HYP_H__
	19	#define __ARM_KVM_HYP_H__
	20
	21	#include <linux/compiler.h>
	22	#include <linux/kvm_host.h>
	23	#include <asm/kvm_mmu.h>
	24
	25	#define __hyp_text __section(.hyp.text) notrace
	26
	27	#define kern_hyp_va(v) (v)
	28	#define hyp_kern_va(v) (v)
	29
3c295687 MZ	30	#define __ACCESS_CP15(CRn, Op1, CRm, Op2) \
	31	"mrc", "mcr", __stringify(p15, Op1, %0, CRn, CRm, Op2), u32
	32	#define __ACCESS_CP15_64(Op1, CRm) \
	33	"mrrc", "mcrr", __stringify(p15, Op1, %Q0, %R0, CRm), u64
	34
	35	#define __write_sysreg(v, r, w, c, t) asm volatile(w " " c : : "r" ((t)(v)))
	36	#define write_sysreg(v, ...) __write_sysreg(v, __VA_ARGS__)
	37
	38	#define __read_sysreg(r, w, c, t) ({ \
	39	t __val; \
	40	asm volatile(r " " c : "=r" (__val)); \
	41	__val; \
	42	})
	43	#define read_sysreg(...) __read_sysreg(__VA_ARGS__)
	44
1d58d2cb MZ	45	#define VTTBR __ACCESS_CP15_64(6, c2)
	46	#define ICIALLUIS __ACCESS_CP15(c7, 0, c1, 0)
	47	#define TLBIALLIS __ACCESS_CP15(c8, 0, c3, 0)
	48	#define TLBIALLNSNHIS __ACCESS_CP15(c8, 4, c3, 4)
	49
08dcbfda	50	#endif /* __ARM_KVM_HYP_H__ */