[deliverable/linux.git] / arch / arm64 / include / asm / kvm_arm.h

/*
 * Copyright (C) 2012,2013 - 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 __ARM64_KVM_ARM_H__
#define __ARM64_KVM_ARM_H__

#include <asm/esr.h>
#include <asm/memory.h>
#include <asm/types.h>

/* Hyp Configuration Register (HCR) bits */
#define HCR_ID		(UL(1) << 33)
#define HCR_CD		(UL(1) << 32)
#define HCR_RW_SHIFT	31
#define HCR_RW		(UL(1) << HCR_RW_SHIFT)
#define HCR_TRVM	(UL(1) << 30)
#define HCR_HCD		(UL(1) << 29)
#define HCR_TDZ		(UL(1) << 28)
#define HCR_TGE		(UL(1) << 27)
#define HCR_TVM		(UL(1) << 26)
#define HCR_TTLB	(UL(1) << 25)
#define HCR_TPU		(UL(1) << 24)
#define HCR_TPC		(UL(1) << 23)
#define HCR_TSW		(UL(1) << 22)
#define HCR_TAC		(UL(1) << 21)
#define HCR_TIDCP	(UL(1) << 20)
#define HCR_TSC		(UL(1) << 19)
#define HCR_TID3	(UL(1) << 18)
#define HCR_TID2	(UL(1) << 17)
#define HCR_TID1	(UL(1) << 16)
#define HCR_TID0	(UL(1) << 15)
#define HCR_TWE		(UL(1) << 14)
#define HCR_TWI		(UL(1) << 13)
#define HCR_DC		(UL(1) << 12)
#define HCR_BSU		(3 << 10)
#define HCR_BSU_IS	(UL(1) << 10)
#define HCR_FB		(UL(1) << 9)
#define HCR_VA		(UL(1) << 8)
#define HCR_VI		(UL(1) << 7)
#define HCR_VF		(UL(1) << 6)
#define HCR_AMO		(UL(1) << 5)
#define HCR_IMO		(UL(1) << 4)
#define HCR_FMO		(UL(1) << 3)
#define HCR_PTW		(UL(1) << 2)
#define HCR_SWIO	(UL(1) << 1)
#define HCR_VM		(UL(1) << 0)

/*
 * The bits we set in HCR:
 * RW:		64bit by default, can be overriden for 32bit VMs
 * TAC:		Trap ACTLR
 * TSC:		Trap SMC
 * TVM:		Trap VM ops (until M+C set in SCTLR_EL1)
 * TSW:		Trap cache operations by set/way
 * TWE:		Trap WFE
 * TWI:		Trap WFI
 * TIDCP:	Trap L2CTLR/L2ECTLR
 * BSU_IS:	Upgrade barriers to the inner shareable domain
 * FB:		Force broadcast of all maintainance operations
 * AMO:		Override CPSR.A and enable signaling with VA
 * IMO:		Override CPSR.I and enable signaling with VI
 * FMO:		Override CPSR.F and enable signaling with VF
 * SWIO:	Turn set/way invalidates into set/way clean+invalidate
 */
#define HCR_GUEST_FLAGS (HCR_TSC | HCR_TSW | HCR_TWE | HCR_TWI | HCR_VM | \
			 HCR_TVM | HCR_BSU_IS | HCR_FB | HCR_TAC | \
			 HCR_AMO | HCR_SWIO | HCR_TIDCP | HCR_RW)
#define HCR_VIRT_EXCP_MASK (HCR_VA | HCR_VI | HCR_VF)
#define HCR_INT_OVERRIDE   (HCR_FMO | HCR_IMO)


/* Hyp System Control Register (SCTLR_EL2) bits */
#define SCTLR_EL2_EE	(1 << 25)
#define SCTLR_EL2_WXN	(1 << 19)
#define SCTLR_EL2_I	(1 << 12)
#define SCTLR_EL2_SA	(1 << 3)
#define SCTLR_EL2_C	(1 << 2)
#define SCTLR_EL2_A	(1 << 1)
#define SCTLR_EL2_M	1
#define SCTLR_EL2_FLAGS	(SCTLR_EL2_M | SCTLR_EL2_A | SCTLR_EL2_C |	\
			 SCTLR_EL2_SA | SCTLR_EL2_I)

/* TCR_EL2 Registers bits */
#define TCR_EL2_TBI	(1 << 20)
#define TCR_EL2_PS	(7 << 16)
#define TCR_EL2_PS_40B	(2 << 16)
#define TCR_EL2_TG0	(1 << 14)
#define TCR_EL2_SH0	(3 << 12)
#define TCR_EL2_ORGN0	(3 << 10)
#define TCR_EL2_IRGN0	(3 << 8)
#define TCR_EL2_T0SZ	0x3f
#define TCR_EL2_MASK	(TCR_EL2_TG0 | TCR_EL2_SH0 | \
			 TCR_EL2_ORGN0 | TCR_EL2_IRGN0 | TCR_EL2_T0SZ)

#define TCR_EL2_FLAGS	(TCR_EL2_PS_40B)

/* VTCR_EL2 Registers bits */
#define VTCR_EL2_PS_MASK	(7 << 16)
#define VTCR_EL2_TG0_MASK	(1 << 14)
#define VTCR_EL2_TG0_4K		(0 << 14)
#define VTCR_EL2_TG0_64K	(1 << 14)
#define VTCR_EL2_SH0_MASK	(3 << 12)
#define VTCR_EL2_SH0_INNER	(3 << 12)
#define VTCR_EL2_ORGN0_MASK	(3 << 10)
#define VTCR_EL2_ORGN0_WBWA	(1 << 10)
#define VTCR_EL2_IRGN0_MASK	(3 << 8)
#define VTCR_EL2_IRGN0_WBWA	(1 << 8)
#define VTCR_EL2_SL0_MASK	(3 << 6)
#define VTCR_EL2_SL0_LVL1	(1 << 6)
#define VTCR_EL2_T0SZ_MASK	0x3f
#define VTCR_EL2_T0SZ_40B	24

/*
 * We configure the Stage-2 page tables to always restrict the IPA space to be
 * 40 bits wide (T0SZ = 24).  Systems with a PARange smaller than 40 bits are
 * not known to exist and will break with this configuration.
 *
 * VTCR_EL2.PS is extracted from ID_AA64MMFR0_EL1.PARange at boot time
 * (see hyp-init.S).
 *
 * Note that when using 4K pages, we concatenate two first level page tables
 * together.
 *
 * The magic numbers used for VTTBR_X in this patch can be found in Tables
 * D4-23 and D4-25 in ARM DDI 0487A.b.
 */
#ifdef CONFIG_ARM64_64K_PAGES
/*
 * Stage2 translation configuration:
 * 40bits input  (T0SZ = 24)
 * 64kB pages (TG0 = 1)
 * 2 level page tables (SL = 1)
 */
#define VTCR_EL2_FLAGS		(VTCR_EL2_TG0_64K | VTCR_EL2_SH0_INNER | \
				 VTCR_EL2_ORGN0_WBWA | VTCR_EL2_IRGN0_WBWA | \
				 VTCR_EL2_SL0_LVL1 | VTCR_EL2_T0SZ_40B)
#define VTTBR_X		(38 - VTCR_EL2_T0SZ_40B)
#else
/*
 * Stage2 translation configuration:
 * 40bits input  (T0SZ = 24)
 * 4kB pages (TG0 = 0)
 * 3 level page tables (SL = 1)
 */
#define VTCR_EL2_FLAGS		(VTCR_EL2_TG0_4K | VTCR_EL2_SH0_INNER | \
				 VTCR_EL2_ORGN0_WBWA | VTCR_EL2_IRGN0_WBWA | \
				 VTCR_EL2_SL0_LVL1 | VTCR_EL2_T0SZ_40B)
#define VTTBR_X		(37 - VTCR_EL2_T0SZ_40B)
#endif

#define VTTBR_BADDR_SHIFT (VTTBR_X - 1)
#define VTTBR_BADDR_MASK  (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT)
#define VTTBR_VMID_SHIFT  (UL(48))
#define VTTBR_VMID_MASK	  (UL(0xFF) << VTTBR_VMID_SHIFT)

/* Hyp System Trap Register */
#define HSTR_EL2_TTEE	(1 << 16)
#define HSTR_EL2_T(x)	(1 << x)

/* Hyp Coprocessor Trap Register */
#define CPTR_EL2_TCPAC	(1 << 31)
#define CPTR_EL2_TTA	(1 << 20)
#define CPTR_EL2_TFP	(1 << 10)

/* Hyp Debug Configuration Register bits */
#define MDCR_EL2_TDRA		(1 << 11)
#define MDCR_EL2_TDOSA		(1 << 10)
#define MDCR_EL2_TDA		(1 << 9)
#define MDCR_EL2_TDE		(1 << 8)
#define MDCR_EL2_HPME		(1 << 7)
#define MDCR_EL2_TPM		(1 << 6)
#define MDCR_EL2_TPMCR		(1 << 5)
#define MDCR_EL2_HPMN_MASK	(0x1F)

/* For compatibility with fault code shared with 32-bit */
#define FSC_FAULT	ESR_ELx_FSC_FAULT
#define FSC_PERM	ESR_ELx_FSC_PERM

/* Hyp Prefetch Fault Address Register (HPFAR/HDFAR) */
#define HPFAR_MASK	(~UL(0xf))

#endif /* __ARM64_KVM_ARM_H__ */
Commit	Line	Data
0369f6a3 MZ	1	/*
	2	* Copyright (C) 2012,2013 - 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 __ARM64_KVM_ARM_H__
	19	#define __ARM64_KVM_ARM_H__
	20
6e53031e	21	#include <asm/esr.h>
286fb1cc	22	#include <asm/memory.h>
0369f6a3 MZ	23	#include <asm/types.h>
	24
	25	/* Hyp Configuration Register (HCR) bits */
	26	#define HCR_ID (UL(1) << 33)
	27	#define HCR_CD (UL(1) << 32)
	28	#define HCR_RW_SHIFT 31
	29	#define HCR_RW (UL(1) << HCR_RW_SHIFT)
	30	#define HCR_TRVM (UL(1) << 30)
	31	#define HCR_HCD (UL(1) << 29)
	32	#define HCR_TDZ (UL(1) << 28)
	33	#define HCR_TGE (UL(1) << 27)
	34	#define HCR_TVM (UL(1) << 26)
	35	#define HCR_TTLB (UL(1) << 25)
	36	#define HCR_TPU (UL(1) << 24)
	37	#define HCR_TPC (UL(1) << 23)
	38	#define HCR_TSW (UL(1) << 22)
	39	#define HCR_TAC (UL(1) << 21)
	40	#define HCR_TIDCP (UL(1) << 20)
	41	#define HCR_TSC (UL(1) << 19)
	42	#define HCR_TID3 (UL(1) << 18)
	43	#define HCR_TID2 (UL(1) << 17)
	44	#define HCR_TID1 (UL(1) << 16)
	45	#define HCR_TID0 (UL(1) << 15)
	46	#define HCR_TWE (UL(1) << 14)
	47	#define HCR_TWI (UL(1) << 13)
	48	#define HCR_DC (UL(1) << 12)
	49	#define HCR_BSU (3 << 10)
	50	#define HCR_BSU_IS (UL(1) << 10)
	51	#define HCR_FB (UL(1) << 9)
	52	#define HCR_VA (UL(1) << 8)
	53	#define HCR_VI (UL(1) << 7)
	54	#define HCR_VF (UL(1) << 6)
	55	#define HCR_AMO (UL(1) << 5)
	56	#define HCR_IMO (UL(1) << 4)
	57	#define HCR_FMO (UL(1) << 3)
	58	#define HCR_PTW (UL(1) << 2)
	59	#define HCR_SWIO (UL(1) << 1)
	60	#define HCR_VM (UL(1) << 0)
	61
	62	/*
	63	* The bits we set in HCR:
	64	* RW: 64bit by default, can be overriden for 32bit VMs
	65	* TAC: Trap ACTLR
	66	* TSC: Trap SMC
4d44923b	67	* TVM: Trap VM ops (until M+C set in SCTLR_EL1)
0369f6a3	68	* TSW: Trap cache operations by set/way
d241aac7	69	* TWE: Trap WFE
0369f6a3 MZ	70	* TWI: Trap WFI
	71	* TIDCP: Trap L2CTLR/L2ECTLR
	72	* BSU_IS: Upgrade barriers to the inner shareable domain
	73	* FB: Force broadcast of all maintainance operations
	74	* AMO: Override CPSR.A and enable signaling with VA
	75	* IMO: Override CPSR.I and enable signaling with VI
	76	* FMO: Override CPSR.F and enable signaling with VF
	77	* SWIO: Turn set/way invalidates into set/way clean+invalidate
	78	*/
d241aac7	79	#define HCR_GUEST_FLAGS (HCR_TSC \| HCR_TSW \| HCR_TWE \| HCR_TWI \| HCR_VM \| \
4d44923b	80	HCR_TVM \| HCR_BSU_IS \| HCR_FB \| HCR_TAC \| \
ac3c3747	81	HCR_AMO \| HCR_SWIO \| HCR_TIDCP \| HCR_RW)
0369f6a3	82	#define HCR_VIRT_EXCP_MASK (HCR_VA \| HCR_VI \| HCR_VF)
ac3c3747 MZ	83	#define HCR_INT_OVERRIDE (HCR_FMO \| HCR_IMO)
ac3c3747 MZ	84
0369f6a3 MZ	85
	86	/* Hyp System Control Register (SCTLR_EL2) bits */
	87	#define SCTLR_EL2_EE (1 << 25)
	88	#define SCTLR_EL2_WXN (1 << 19)
	89	#define SCTLR_EL2_I (1 << 12)
	90	#define SCTLR_EL2_SA (1 << 3)
	91	#define SCTLR_EL2_C (1 << 2)
	92	#define SCTLR_EL2_A (1 << 1)
	93	#define SCTLR_EL2_M 1
	94	#define SCTLR_EL2_FLAGS (SCTLR_EL2_M \| SCTLR_EL2_A \| SCTLR_EL2_C \| \
	95	SCTLR_EL2_SA \| SCTLR_EL2_I)
	96
	97	/* TCR_EL2 Registers bits */
	98	#define TCR_EL2_TBI (1 << 20)
	99	#define TCR_EL2_PS (7 << 16)
	100	#define TCR_EL2_PS_40B (2 << 16)
	101	#define TCR_EL2_TG0 (1 << 14)
	102	#define TCR_EL2_SH0 (3 << 12)
	103	#define TCR_EL2_ORGN0 (3 << 10)
	104	#define TCR_EL2_IRGN0 (3 << 8)
	105	#define TCR_EL2_T0SZ 0x3f
	106	#define TCR_EL2_MASK (TCR_EL2_TG0 \| TCR_EL2_SH0 \| \
	107	TCR_EL2_ORGN0 \| TCR_EL2_IRGN0 \| TCR_EL2_T0SZ)
	108
	109	#define TCR_EL2_FLAGS (TCR_EL2_PS_40B)
	110
	111	/* VTCR_EL2 Registers bits */
	112	#define VTCR_EL2_PS_MASK (7 << 16)
0369f6a3 MZ	113	#define VTCR_EL2_TG0_MASK (1 << 14)
	114	#define VTCR_EL2_TG0_4K (0 << 14)
	115	#define VTCR_EL2_TG0_64K (1 << 14)
	116	#define VTCR_EL2_SH0_MASK (3 << 12)
	117	#define VTCR_EL2_SH0_INNER (3 << 12)
	118	#define VTCR_EL2_ORGN0_MASK (3 << 10)
	119	#define VTCR_EL2_ORGN0_WBWA (1 << 10)
	120	#define VTCR_EL2_IRGN0_MASK (3 << 8)
	121	#define VTCR_EL2_IRGN0_WBWA (1 << 8)
	122	#define VTCR_EL2_SL0_MASK (3 << 6)
	123	#define VTCR_EL2_SL0_LVL1 (1 << 6)
	124	#define VTCR_EL2_T0SZ_MASK 0x3f
	125	#define VTCR_EL2_T0SZ_40B 24
	126
dbff124e JS	127	/*
	128	* We configure the Stage-2 page tables to always restrict the IPA space to be
	129	* 40 bits wide (T0SZ = 24). Systems with a PARange smaller than 40 bits are
	130	* not known to exist and will break with this configuration.
	131	*
84ed7412 MZ	132	* VTCR_EL2.PS is extracted from ID_AA64MMFR0_EL1.PARange at boot time
	133	* (see hyp-init.S).
	134	*
dbff124e JS	135	* Note that when using 4K pages, we concatenate two first level page tables
	136	* together.
	137	*
	138	* The magic numbers used for VTTBR_X in this patch can be found in Tables
	139	* D4-23 and D4-25 in ARM DDI 0487A.b.
	140	*/
0369f6a3 MZ	141	#ifdef CONFIG_ARM64_64K_PAGES
	142	/*
	143	* Stage2 translation configuration:
0369f6a3 MZ	144	* 40bits input (T0SZ = 24)
	145	* 64kB pages (TG0 = 1)
	146	* 2 level page tables (SL = 1)
	147	*/
87366d8c RMC	148	#define VTCR_EL2_FLAGS (VTCR_EL2_TG0_64K \| VTCR_EL2_SH0_INNER \| \
	149	VTCR_EL2_ORGN0_WBWA \| VTCR_EL2_IRGN0_WBWA \| \
	150	VTCR_EL2_SL0_LVL1 \| VTCR_EL2_T0SZ_40B)
0369f6a3 MZ	151	#define VTTBR_X (38 - VTCR_EL2_T0SZ_40B)
	152	#else
	153	/*
	154	* Stage2 translation configuration:
0369f6a3 MZ	155	* 40bits input (T0SZ = 24)
	156	* 4kB pages (TG0 = 0)
	157	* 3 level page tables (SL = 1)
	158	*/
87366d8c RMC	159	#define VTCR_EL2_FLAGS (VTCR_EL2_TG0_4K \| VTCR_EL2_SH0_INNER \| \
	160	VTCR_EL2_ORGN0_WBWA \| VTCR_EL2_IRGN0_WBWA \| \
	161	VTCR_EL2_SL0_LVL1 \| VTCR_EL2_T0SZ_40B)
0369f6a3 MZ	162	#define VTTBR_X (37 - VTCR_EL2_T0SZ_40B)
	163	#endif
	164
	165	#define VTTBR_BADDR_SHIFT (VTTBR_X - 1)
286fb1cc GL	166	#define VTTBR_BADDR_MASK (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT)
	167	#define VTTBR_VMID_SHIFT (UL(48))
	168	#define VTTBR_VMID_MASK (UL(0xFF) << VTTBR_VMID_SHIFT)
0369f6a3 MZ	169
	170	/* Hyp System Trap Register */
	171	#define HSTR_EL2_TTEE (1 << 16)
	172	#define HSTR_EL2_T(x) (1 << x)
	173
	174	/* Hyp Coprocessor Trap Register */
	175	#define CPTR_EL2_TCPAC (1 << 31)
	176	#define CPTR_EL2_TTA (1 << 20)
	177	#define CPTR_EL2_TFP (1 << 10)
	178
	179	/* Hyp Debug Configuration Register bits */
	180	#define MDCR_EL2_TDRA (1 << 11)
	181	#define MDCR_EL2_TDOSA (1 << 10)
	182	#define MDCR_EL2_TDA (1 << 9)
	183	#define MDCR_EL2_TDE (1 << 8)
	184	#define MDCR_EL2_HPME (1 << 7)
	185	#define MDCR_EL2_TPM (1 << 6)
	186	#define MDCR_EL2_TPMCR (1 << 5)
	187	#define MDCR_EL2_HPMN_MASK (0x1F)
	188
6e53031e MR	189	/* For compatibility with fault code shared with 32-bit */
	190	#define FSC_FAULT ESR_ELx_FSC_FAULT
	191	#define FSC_PERM ESR_ELx_FSC_PERM
0369f6a3 MZ	192
0369f6a3 MZ	193	/* Hyp Prefetch Fault Address Register (HPFAR/HDFAR) */
286fb1cc	194	#define HPFAR_MASK (~UL(0xf))
0369f6a3	195
0369f6a3	196	#endif /* __ARM64_KVM_ARM_H__ */