arch/arm64/include/asm/kvm_arm.h - kernel/bruno - Git at Google

 /*
  * 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_RES1	((1 << 31) | (1 << 23))
 #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)

 /* VTCR_EL2 Registers bits */
 #define VTCR_EL2_RES1		(1 << 31)
 #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 | \
 				 VTCR_EL2_RES1)
 #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 | \
 				 VTCR_EL2_RES1)
 #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_T(x)	(1 << x)

 /* Hyp Coproccessor Trap Register Shifts */
 #define CPTR_EL2_TFP_SHIFT 10

 /* Hyp Coprocessor Trap Register */
 #define CPTR_EL2_TCPAC	(1 << 31)
 #define CPTR_EL2_TTA	(1 << 20)
 #define CPTR_EL2_TFP	(1 << CPTR_EL2_TFP_SHIFT)

 /* 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_ACCESS	ESR_ELx_FSC_ACCESS
 #define FSC_PERM	ESR_ELx_FSC_PERM

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

 #define kvm_arm_exception_type	\
 	{0, "IRQ" }, 		\
 	{1, "TRAP" }

 #define ECN(x) { ESR_ELx_EC_##x, #x }

 #define kvm_arm_exception_class \
 	ECN(UNKNOWN), ECN(WFx), ECN(CP15_32), ECN(CP15_64), ECN(CP14_MR), \
 	ECN(CP14_LS), ECN(FP_ASIMD), ECN(CP10_ID), ECN(CP14_64), ECN(SVC64), \
 	ECN(HVC64), ECN(SMC64), ECN(SYS64), ECN(IMP_DEF), ECN(IABT_LOW), \
 	ECN(IABT_CUR), ECN(PC_ALIGN), ECN(DABT_LOW), ECN(DABT_CUR), \
 	ECN(SP_ALIGN), ECN(FP_EXC32), ECN(FP_EXC64), ECN(SERROR), \
 	ECN(BREAKPT_LOW), ECN(BREAKPT_CUR), ECN(SOFTSTP_LOW), \
 	ECN(SOFTSTP_CUR), ECN(WATCHPT_LOW), ECN(WATCHPT_CUR), \
 	ECN(BKPT32), ECN(VECTOR32), ECN(BRK64)

 #endif /* __ARM64_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_RES1 ((1 << 31) \| (1 << 23))
	#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)

	/* VTCR_EL2 Registers bits */
	#define VTCR_EL2_RES1 (1 << 31)
	#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 \| \
	VTCR_EL2_RES1)
	#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 \| \
	VTCR_EL2_RES1)
	#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_T(x) (1 << x)

	/* Hyp Coproccessor Trap Register Shifts */
	#define CPTR_EL2_TFP_SHIFT 10

	/* Hyp Coprocessor Trap Register */
	#define CPTR_EL2_TCPAC (1 << 31)
	#define CPTR_EL2_TTA (1 << 20)
	#define CPTR_EL2_TFP (1 << CPTR_EL2_TFP_SHIFT)

	/* 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_ACCESS ESR_ELx_FSC_ACCESS
	#define FSC_PERM ESR_ELx_FSC_PERM

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

	#define kvm_arm_exception_type \
	{0, "IRQ" }, \
	{1, "TRAP" }

	#define ECN(x) { ESR_ELx_EC_##x, #x }

	#define kvm_arm_exception_class \
	ECN(UNKNOWN), ECN(WFx), ECN(CP15_32), ECN(CP15_64), ECN(CP14_MR), \
	ECN(CP14_LS), ECN(FP_ASIMD), ECN(CP10_ID), ECN(CP14_64), ECN(SVC64), \
	ECN(HVC64), ECN(SMC64), ECN(SYS64), ECN(IMP_DEF), ECN(IABT_LOW), \
	ECN(IABT_CUR), ECN(PC_ALIGN), ECN(DABT_LOW), ECN(DABT_CUR), \
	ECN(SP_ALIGN), ECN(FP_EXC32), ECN(FP_EXC64), ECN(SERROR), \
	ECN(BREAKPT_LOW), ECN(BREAKPT_CUR), ECN(SOFTSTP_LOW), \
	ECN(SOFTSTP_CUR), ECN(WATCHPT_LOW), ECN(WATCHPT_CUR), \
	ECN(BKPT32), ECN(VECTOR32), ECN(BRK64)

	#endif /* __ARM64_KVM_ARM_H__ */