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/*
 * 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_API		(UL(1) << 41)
#define HCR_APK		(UL(1) << 40)
#define HCR_TEA		(UL(1) << 37)
#define HCR_TERR	(UL(1) << 36)
#define HCR_E2H		(UL(1) << 34)
#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_VSE		(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 overridden 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
 * PTW:		Take a stage2 fault if a stage1 walk steps in device memory
 */
#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 | HCR_PTW)
#define HCR_VIRT_EXCP_MASK (HCR_VSE | HCR_VI | HCR_VF)
#define HCR_INT_OVERRIDE   (HCR_FMO | HCR_IMO)
#define HCR_HOST_NVHE_FLAGS (HCR_RW | HCR_API | HCR_APK)
#define HCR_HOST_VHE_FLAGS (HCR_RW | HCR_TGE | HCR_E2H)

/* TCR_EL2 Registers bits */
#define TCR_EL2_RES1		((1 << 31) | (1 << 23))
#define TCR_EL2_TBI		(1 << 20)
#define TCR_EL2_PS_SHIFT	16
#define TCR_EL2_PS_MASK		(7 << TCR_EL2_PS_SHIFT)
#define TCR_EL2_PS_40B		(2 << TCR_EL2_PS_SHIFT)
#define TCR_EL2_TG0_MASK	TCR_TG0_MASK
#define TCR_EL2_SH0_MASK	TCR_SH0_MASK
#define TCR_EL2_ORGN0_MASK	TCR_ORGN0_MASK
#define TCR_EL2_IRGN0_MASK	TCR_IRGN0_MASK
#define TCR_EL2_T0SZ_MASK	0x3f
#define TCR_EL2_MASK	(TCR_EL2_TG0_MASK | TCR_EL2_SH0_MASK | \
			 TCR_EL2_ORGN0_MASK | TCR_EL2_IRGN0_MASK | TCR_EL2_T0SZ_MASK)

/* VTCR_EL2 Registers bits */
#define VTCR_EL2_RES1		(1U << 31)
#define VTCR_EL2_HD		(1 << 22)
#define VTCR_EL2_HA		(1 << 21)
#define VTCR_EL2_PS_MASK	TCR_EL2_PS_MASK
#define VTCR_EL2_TG0_MASK	TCR_TG0_MASK
#define VTCR_EL2_TG0_4K		TCR_TG0_4K
#define VTCR_EL2_TG0_16K	TCR_TG0_16K
#define VTCR_EL2_TG0_64K	TCR_TG0_64K
#define VTCR_EL2_SH0_MASK	TCR_SH0_MASK
#define VTCR_EL2_SH0_INNER	TCR_SH0_INNER
#define VTCR_EL2_ORGN0_MASK	TCR_ORGN0_MASK
#define VTCR_EL2_ORGN0_WBWA	TCR_ORGN0_WBWA
#define VTCR_EL2_IRGN0_MASK	TCR_IRGN0_MASK
#define VTCR_EL2_IRGN0_WBWA	TCR_IRGN0_WBWA
#define VTCR_EL2_SL0_SHIFT	6
#define VTCR_EL2_SL0_MASK	(3 << VTCR_EL2_SL0_SHIFT)
#define VTCR_EL2_SL0_LVL1	(1 << VTCR_EL2_SL0_SHIFT)
#define VTCR_EL2_T0SZ_MASK	0x3f
#define VTCR_EL2_T0SZ_40B	24
#define VTCR_EL2_VS_SHIFT	19
#define VTCR_EL2_VS_8BIT	(0 << VTCR_EL2_VS_SHIFT)
#define VTCR_EL2_VS_16BIT	(1 << VTCR_EL2_VS_SHIFT)

/*
 * 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. With 16K pages, we concatenate 16 first level page tables.
 *
 * 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.
 */

#define VTCR_EL2_T0SZ_IPA	VTCR_EL2_T0SZ_40B
#define VTCR_EL2_COMMON_BITS	(VTCR_EL2_SH0_INNER | VTCR_EL2_ORGN0_WBWA | \
				 VTCR_EL2_IRGN0_WBWA | VTCR_EL2_RES1)

#ifdef CONFIG_ARM64_64K_PAGES
/*
 * Stage2 translation configuration:
 * 64kB pages (TG0 = 1)
 * 2 level page tables (SL = 1)
 */
#define VTCR_EL2_TGRAN_FLAGS		(VTCR_EL2_TG0_64K | VTCR_EL2_SL0_LVL1)
#define VTTBR_X_TGRAN_MAGIC		38
#elif defined(CONFIG_ARM64_16K_PAGES)
/*
 * Stage2 translation configuration:
 * 16kB pages (TG0 = 2)
 * 2 level page tables (SL = 1)
 */
#define VTCR_EL2_TGRAN_FLAGS		(VTCR_EL2_TG0_16K | VTCR_EL2_SL0_LVL1)
#define VTTBR_X_TGRAN_MAGIC		42
#else	/* 4K */
/*
 * Stage2 translation configuration:
 * 4kB pages (TG0 = 0)
 * 3 level page tables (SL = 1)
 */
#define VTCR_EL2_TGRAN_FLAGS		(VTCR_EL2_TG0_4K | VTCR_EL2_SL0_LVL1)
#define VTTBR_X_TGRAN_MAGIC		37
#endif

#define VTCR_EL2_FLAGS			(VTCR_EL2_COMMON_BITS | VTCR_EL2_TGRAN_FLAGS)
#define VTTBR_X				(VTTBR_X_TGRAN_MAGIC - VTCR_EL2_T0SZ_IPA)

#define VTTBR_BADDR_MASK  (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_X)
#define VTTBR_VMID_SHIFT  (UL(48))
#define VTTBR_VMID_MASK(size) (_AT(u64, (1 << size) - 1) << VTTBR_VMID_SHIFT)

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

/* Hyp Coprocessor 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)
#define CPTR_EL2_TZ	(1 << 8)
#define CPTR_EL2_RES1	0x000032ff /* known RES1 bits in CPTR_EL2 */
#define CPTR_EL2_DEFAULT	CPTR_EL2_RES1

/* Hyp Debug Configuration Register bits */
#define MDCR_EL2_TTRF		(1 << 19)
#define MDCR_EL2_TPMS		(1 << 14)
#define MDCR_EL2_E2PB_MASK	(UL(0x3))
#define MDCR_EL2_E2PB_SHIFT	(UL(12))
#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
#define FSC_SEA		ESR_ELx_FSC_EXTABT
#define FSC_SEA_TTW0	(0x14)
#define FSC_SEA_TTW1	(0x15)
#define FSC_SEA_TTW2	(0x16)
#define FSC_SEA_TTW3	(0x17)
#define FSC_SECC	(0x18)
#define FSC_SECC_TTW0	(0x1c)
#define FSC_SECC_TTW1	(0x1d)
#define FSC_SECC_TTW2	(0x1e)
#define FSC_SECC_TTW3	(0x1f)

/* 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)

#define CPACR_EL1_FPEN		(3 << 20)
#define CPACR_EL1_TTA		(1 << 28)
#define CPACR_EL1_DEFAULT	(CPACR_EL1_FPEN | CPACR_EL1_ZEN_EL1EN)

#endif /* __ARM64_KVM_ARM_H__ */

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xen Folder 0755
Kbuild File 703 B 0644
acenv.h File 541 B 0644
acpi.h File 4.34 KB 0644
alternative.h File 7.63 KB 0644
arch_gicv3.h File 3.44 KB 0644
arch_timer.h File 4.87 KB 0644
arm-cci.h File 794 B 0644
asm-bug.h File 1.45 KB 0644
asm-offsets.h File 35 B 0644
asm-uaccess.h File 2.09 KB 0644
assembler.h File 13.51 KB 0644
atomic.h File 8.35 KB 0644
atomic_ll_sc.h File 10.62 KB 0644
atomic_lse.h File 14.82 KB 0644
barrier.h File 3.78 KB 0644
bitops.h File 1.9 KB 0644
bitrev.h File 452 B 0644
boot.h File 384 B 0644
brk-imm.h File 706 B 0644
bug.h File 1.09 KB 0644
cache.h File 2.23 KB 0644
cacheflush.h File 4.87 KB 0644
checksum.h File 1.35 KB 0644
clocksource.h File 192 B 0644
cmpxchg.h File 7.98 KB 0644
compat.h File 7.15 KB 0644
compiler.h File 1.18 KB 0644
cpu.h File 1.84 KB 0644
cpu_ops.h File 2.73 KB 0644
cpucaps.h File 1.83 KB 0644
cpufeature.h File 19.14 KB 0644
cpuidle.h File 401 B 0644
cputype.h File 8.1 KB 0644
current.h File 517 B 0644
daifflags.h File 1.59 KB 0644
dcc.h File 1.36 KB 0644
debug-monitors.h File 3.76 KB 0644
device.h File 886 B 0644
dma-mapping.h File 2.42 KB 0644
dmi.h File 850 B 0644
efi.h File 4.57 KB 0644
elf.h File 5.7 KB 0644
esr.h File 9.02 KB 0644
exception.h File 1.21 KB 0644
exec.h File 868 B 0644
extable.h File 815 B 0644
fb.h File 1000 B 0644
fixmap.h File 2.91 KB 0644
fpsimd.h File 4.21 KB 0644
fpsimdmacros.h File 5.62 KB 0644
ftrace.h File 1.92 KB 0644
futex.h File 3.41 KB 0644
hardirq.h File 2.08 KB 0644
hugetlb.h File 2.71 KB 0644
hw_breakpoint.h File 4.46 KB 0644
hwcap.h File 1.86 KB 0644
hypervisor.h File 144 B 0644
insn.h File 16.03 KB 0644
io.h File 7.72 KB 0644
irq.h File 307 B 0644
irq_work.h File 228 B 0644
irqflags.h File 2.3 KB 0644
jump_label.h File 1.68 KB 0644
kasan.h File 1.16 KB 0644
kernel-pgtable.h File 4.03 KB 0644
kexec.h File 2.42 KB 0644
kgdb.h File 3.79 KB 0644
kprobes.h File 1.74 KB 0644
kvm_arm.h File 8.38 KB 0644
kvm_asm.h File 4.26 KB 0644
kvm_coproc.h File 2.04 KB 0644
kvm_emulate.h File 10.38 KB 0644
kvm_host.h File 15.73 KB 0644
kvm_hyp.h File 5.79 KB 0644
kvm_mmio.h File 1.3 KB 0644
kvm_mmu.h File 11.72 KB 0644
linkage.h File 114 B 0644
lse.h File 1.26 KB 0644
memblock.h File 720 B 0644
memory.h File 9.32 KB 0644
mmu.h File 2.74 KB 0644
mmu_context.h File 6.35 KB 0644
mmzone.h File 266 B 0644
module.h File 2.8 KB 0644
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numa.h File 1.33 KB 0644
page-def.h File 1.17 KB 0644
page.h File 1.61 KB 0644
paravirt.h File 458 B 0644
pci.h File 878 B 0644
percpu.h File 7.48 KB 0644
perf_event.h File 3.17 KB 0644
pgalloc.h File 3.71 KB 0644
pgtable-hwdef.h File 9.4 KB 0644
pgtable-prot.h File 4.38 KB 0644
pgtable-types.h File 1.84 KB 0644
pgtable.h File 21.55 KB 0644
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processor.h File 6.52 KB 0644
ptdump.h File 1.42 KB 0644
ptrace.h File 9 KB 0644
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sections.h File 1.46 KB 0644
shmparam.h File 965 B 0644
signal32.h File 1.45 KB 0644
simd.h File 1.39 KB 0644
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smp_plat.h File 1.43 KB 0644
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stackprotector.h File 1.11 KB 0644
stacktrace.h File 2.53 KB 0644
stage2_pgtable-nopmd.h File 1.3 KB 0644
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stage2_pgtable.h File 4.89 KB 0644
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string.h File 2.33 KB 0644
suspend.h File 1.65 KB 0644
sync_bitops.h File 1.11 KB 0644
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tlb.h File 2.22 KB 0644
tlbflush.h File 5.38 KB 0644
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traps.h File 3.33 KB 0644
uaccess.h File 12.01 KB 0644
unistd.h File 1.6 KB 0644
unistd32.h File 27.53 KB 0644
uprobes.h File 777 B 0644
vdso.h File 1.09 KB 0644
vdso_datapage.h File 1.53 KB 0644
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vmap_stack.h File 769 B 0644
word-at-a-time.h File 2.22 KB 0644