From: Sanjay Lal Date: Thu, 22 Nov 2012 02:34:00 +0000 (-0800) Subject: KVM/MIPS32: Arch specific KVM data structures. X-Git-Tag: firefly_0821_release~3680^2~497^2~1^2~15 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=740765ce45689a4eca21914f8b2cc872a970f53f;p=firefly-linux-kernel-4.4.55.git KVM/MIPS32: Arch specific KVM data structures. Signed-off-by: Sanjay Lal Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/include/asm/kvm.h b/arch/mips/include/asm/kvm.h new file mode 100644 index 000000000000..85789eacbf18 --- /dev/null +++ b/arch/mips/include/asm/kvm.h @@ -0,0 +1,55 @@ +/* +* This file is subject to the terms and conditions of the GNU General Public +* License. See the file "COPYING" in the main directory of this archive +* for more details. +* +* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. +* Authors: Sanjay Lal +*/ + +#ifndef __LINUX_KVM_MIPS_H +#define __LINUX_KVM_MIPS_H + +#include + +#define __KVM_MIPS + +#define N_MIPS_COPROC_REGS 32 +#define N_MIPS_COPROC_SEL 8 + +/* for KVM_GET_REGS and KVM_SET_REGS */ +struct kvm_regs { + __u32 gprs[32]; + __u32 hi; + __u32 lo; + __u32 pc; + + __u32 cp0reg[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; +}; + +/* for KVM_GET_SREGS and KVM_SET_SREGS */ +struct kvm_sregs { +}; + +/* for KVM_GET_FPU and KVM_SET_FPU */ +struct kvm_fpu { +}; + +struct kvm_debug_exit_arch { +}; + +/* for KVM_SET_GUEST_DEBUG */ +struct kvm_guest_debug_arch { +}; + +struct kvm_mips_interrupt { + /* in */ + __u32 cpu; + __u32 irq; +}; + +/* definition of registers in kvm_run */ +struct kvm_sync_regs { +}; + +#endif /* __LINUX_KVM_MIPS_H */ diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h new file mode 100644 index 000000000000..143875c6c95a --- /dev/null +++ b/arch/mips/include/asm/kvm_host.h @@ -0,0 +1,667 @@ +/* +* This file is subject to the terms and conditions of the GNU General Public +* License. See the file "COPYING" in the main directory of this archive +* for more details. +* +* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. +* Authors: Sanjay Lal +*/ + +#ifndef __MIPS_KVM_HOST_H__ +#define __MIPS_KVM_HOST_H__ + +#include +#include +#include +#include +#include +#include +#include +#include + + +#define KVM_MAX_VCPUS 1 +#define KVM_USER_MEM_SLOTS 8 +/* memory slots that does not exposed to userspace */ +#define KVM_PRIVATE_MEM_SLOTS 0 + +#define KVM_COALESCED_MMIO_PAGE_OFFSET 1 + +/* Don't support huge pages */ +#define KVM_HPAGE_GFN_SHIFT(x) 0 + +/* We don't currently support large pages. */ +#define KVM_NR_PAGE_SIZES 1 +#define KVM_PAGES_PER_HPAGE(x) 1 + + + +/* Special address that contains the comm page, used for reducing # of traps */ +#define KVM_GUEST_COMMPAGE_ADDR 0x0 + +#define KVM_GUEST_KERNEL_MODE(vcpu) ((kvm_read_c0_guest_status(vcpu->arch.cop0) & (ST0_EXL | ST0_ERL)) || \ + ((kvm_read_c0_guest_status(vcpu->arch.cop0) & KSU_USER) == 0)) + +#define KVM_GUEST_KUSEG 0x00000000UL +#define KVM_GUEST_KSEG0 0x40000000UL +#define KVM_GUEST_KSEG23 0x60000000UL +#define KVM_GUEST_KSEGX(a) ((_ACAST32_(a)) & 0x60000000) +#define KVM_GUEST_CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff) + +#define KVM_GUEST_CKSEG0ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG0) +#define KVM_GUEST_CKSEG1ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG1) +#define KVM_GUEST_CKSEG23ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG23) + +/* + * Map an address to a certain kernel segment + */ +#define KVM_GUEST_KSEG0ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG0) +#define KVM_GUEST_KSEG1ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG1) +#define KVM_GUEST_KSEG23ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG23) + +#define KVM_INVALID_PAGE 0xdeadbeef +#define KVM_INVALID_INST 0xdeadbeef +#define KVM_INVALID_ADDR 0xdeadbeef + +#define KVM_MALTA_GUEST_RTC_ADDR 0xb8000070UL + +#define GUEST_TICKS_PER_JIFFY (40000000/HZ) +#define MS_TO_NS(x) (x * 1E6L) + +#define CAUSEB_DC 27 +#define CAUSEF_DC (_ULCAST_(1) << 27) + +struct kvm; +struct kvm_run; +struct kvm_vcpu; +struct kvm_interrupt; + +extern atomic_t kvm_mips_instance; +extern pfn_t(*kvm_mips_gfn_to_pfn) (struct kvm *kvm, gfn_t gfn); +extern void (*kvm_mips_release_pfn_clean) (pfn_t pfn); +extern bool(*kvm_mips_is_error_pfn) (pfn_t pfn); + +struct kvm_vm_stat { + u32 remote_tlb_flush; +}; + +struct kvm_vcpu_stat { + u32 wait_exits; + u32 cache_exits; + u32 signal_exits; + u32 int_exits; + u32 cop_unusable_exits; + u32 tlbmod_exits; + u32 tlbmiss_ld_exits; + u32 tlbmiss_st_exits; + u32 addrerr_st_exits; + u32 addrerr_ld_exits; + u32 syscall_exits; + u32 resvd_inst_exits; + u32 break_inst_exits; + u32 flush_dcache_exits; + u32 halt_wakeup; +}; + +enum kvm_mips_exit_types { + WAIT_EXITS, + CACHE_EXITS, + SIGNAL_EXITS, + INT_EXITS, + COP_UNUSABLE_EXITS, + TLBMOD_EXITS, + TLBMISS_LD_EXITS, + TLBMISS_ST_EXITS, + ADDRERR_ST_EXITS, + ADDRERR_LD_EXITS, + SYSCALL_EXITS, + RESVD_INST_EXITS, + BREAK_INST_EXITS, + FLUSH_DCACHE_EXITS, + MAX_KVM_MIPS_EXIT_TYPES +}; + +struct kvm_arch_memory_slot { +}; + +struct kvm_arch { + /* Guest GVA->HPA page table */ + unsigned long *guest_pmap; + unsigned long guest_pmap_npages; + + /* Wired host TLB used for the commpage */ + int commpage_tlb; +}; + +#define N_MIPS_COPROC_REGS 32 +#define N_MIPS_COPROC_SEL 8 + +struct mips_coproc { + unsigned long reg[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; +#ifdef CONFIG_KVM_MIPS_DEBUG_COP0_COUNTERS + unsigned long stat[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; +#endif +}; + +/* + * Coprocessor 0 register names + */ +#define MIPS_CP0_TLB_INDEX 0 +#define MIPS_CP0_TLB_RANDOM 1 +#define MIPS_CP0_TLB_LOW 2 +#define MIPS_CP0_TLB_LO0 2 +#define MIPS_CP0_TLB_LO1 3 +#define MIPS_CP0_TLB_CONTEXT 4 +#define MIPS_CP0_TLB_PG_MASK 5 +#define MIPS_CP0_TLB_WIRED 6 +#define MIPS_CP0_HWRENA 7 +#define MIPS_CP0_BAD_VADDR 8 +#define MIPS_CP0_COUNT 9 +#define MIPS_CP0_TLB_HI 10 +#define MIPS_CP0_COMPARE 11 +#define MIPS_CP0_STATUS 12 +#define MIPS_CP0_CAUSE 13 +#define MIPS_CP0_EXC_PC 14 +#define MIPS_CP0_PRID 15 +#define MIPS_CP0_CONFIG 16 +#define MIPS_CP0_LLADDR 17 +#define MIPS_CP0_WATCH_LO 18 +#define MIPS_CP0_WATCH_HI 19 +#define MIPS_CP0_TLB_XCONTEXT 20 +#define MIPS_CP0_ECC 26 +#define MIPS_CP0_CACHE_ERR 27 +#define MIPS_CP0_TAG_LO 28 +#define MIPS_CP0_TAG_HI 29 +#define MIPS_CP0_ERROR_PC 30 +#define MIPS_CP0_DEBUG 23 +#define MIPS_CP0_DEPC 24 +#define MIPS_CP0_PERFCNT 25 +#define MIPS_CP0_ERRCTL 26 +#define MIPS_CP0_DATA_LO 28 +#define MIPS_CP0_DATA_HI 29 +#define MIPS_CP0_DESAVE 31 + +#define MIPS_CP0_CONFIG_SEL 0 +#define MIPS_CP0_CONFIG1_SEL 1 +#define MIPS_CP0_CONFIG2_SEL 2 +#define MIPS_CP0_CONFIG3_SEL 3 + +/* Config0 register bits */ +#define CP0C0_M 31 +#define CP0C0_K23 28 +#define CP0C0_KU 25 +#define CP0C0_MDU 20 +#define CP0C0_MM 17 +#define CP0C0_BM 16 +#define CP0C0_BE 15 +#define CP0C0_AT 13 +#define CP0C0_AR 10 +#define CP0C0_MT 7 +#define CP0C0_VI 3 +#define CP0C0_K0 0 + +/* Config1 register bits */ +#define CP0C1_M 31 +#define CP0C1_MMU 25 +#define CP0C1_IS 22 +#define CP0C1_IL 19 +#define CP0C1_IA 16 +#define CP0C1_DS 13 +#define CP0C1_DL 10 +#define CP0C1_DA 7 +#define CP0C1_C2 6 +#define CP0C1_MD 5 +#define CP0C1_PC 4 +#define CP0C1_WR 3 +#define CP0C1_CA 2 +#define CP0C1_EP 1 +#define CP0C1_FP 0 + +/* Config2 Register bits */ +#define CP0C2_M 31 +#define CP0C2_TU 28 +#define CP0C2_TS 24 +#define CP0C2_TL 20 +#define CP0C2_TA 16 +#define CP0C2_SU 12 +#define CP0C2_SS 8 +#define CP0C2_SL 4 +#define CP0C2_SA 0 + +/* Config3 Register bits */ +#define CP0C3_M 31 +#define CP0C3_ISA_ON_EXC 16 +#define CP0C3_ULRI 13 +#define CP0C3_DSPP 10 +#define CP0C3_LPA 7 +#define CP0C3_VEIC 6 +#define CP0C3_VInt 5 +#define CP0C3_SP 4 +#define CP0C3_MT 2 +#define CP0C3_SM 1 +#define CP0C3_TL 0 + +/* Have config1, Cacheable, noncoherent, write-back, write allocate*/ +#define MIPS_CONFIG0 \ + ((1 << CP0C0_M) | (0x3 << CP0C0_K0)) + +/* Have config2, no coprocessor2 attached, no MDMX support attached, + no performance counters, watch registers present, + no code compression, EJTAG present, no FPU, no watch registers */ +#define MIPS_CONFIG1 \ +((1 << CP0C1_M) | \ + (0 << CP0C1_C2) | (0 << CP0C1_MD) | (0 << CP0C1_PC) | \ + (0 << CP0C1_WR) | (0 << CP0C1_CA) | (1 << CP0C1_EP) | \ + (0 << CP0C1_FP)) + +/* Have config3, no tertiary/secondary caches implemented */ +#define MIPS_CONFIG2 \ +((1 << CP0C2_M)) + +/* No config4, no DSP ASE, no large physaddr (PABITS), + no external interrupt controller, no vectored interrupts, + no 1kb pages, no SmartMIPS ASE, no trace logic */ +#define MIPS_CONFIG3 \ +((0 << CP0C3_M) | (0 << CP0C3_DSPP) | (0 << CP0C3_LPA) | \ + (0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) | \ + (0 << CP0C3_SM) | (0 << CP0C3_TL)) + +/* MMU types, the first four entries have the same layout as the + CP0C0_MT field. */ +enum mips_mmu_types { + MMU_TYPE_NONE, + MMU_TYPE_R4000, + MMU_TYPE_RESERVED, + MMU_TYPE_FMT, + MMU_TYPE_R3000, + MMU_TYPE_R6000, + MMU_TYPE_R8000 +}; + +/* + * Trap codes + */ +#define T_INT 0 /* Interrupt pending */ +#define T_TLB_MOD 1 /* TLB modified fault */ +#define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */ +#define T_TLB_ST_MISS 3 /* TLB miss on a store */ +#define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */ +#define T_ADDR_ERR_ST 5 /* Address error on a store */ +#define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */ +#define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */ +#define T_SYSCALL 8 /* System call */ +#define T_BREAK 9 /* Breakpoint */ +#define T_RES_INST 10 /* Reserved instruction exception */ +#define T_COP_UNUSABLE 11 /* Coprocessor unusable */ +#define T_OVFLOW 12 /* Arithmetic overflow */ + +/* + * Trap definitions added for r4000 port. + */ +#define T_TRAP 13 /* Trap instruction */ +#define T_VCEI 14 /* Virtual coherency exception */ +#define T_FPE 15 /* Floating point exception */ +#define T_WATCH 23 /* Watch address reference */ +#define T_VCED 31 /* Virtual coherency data */ + +/* Resume Flags */ +#define RESUME_FLAG_DR (1<<0) /* Reload guest nonvolatile state? */ +#define RESUME_FLAG_HOST (1<<1) /* Resume host? */ + +#define RESUME_GUEST 0 +#define RESUME_GUEST_DR RESUME_FLAG_DR +#define RESUME_HOST RESUME_FLAG_HOST + +enum emulation_result { + EMULATE_DONE, /* no further processing */ + EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ + EMULATE_FAIL, /* can't emulate this instruction */ + EMULATE_WAIT, /* WAIT instruction */ + EMULATE_PRIV_FAIL, +}; + +#define MIPS3_PG_G 0x00000001 /* Global; ignore ASID if in lo0 & lo1 */ +#define MIPS3_PG_V 0x00000002 /* Valid */ +#define MIPS3_PG_NV 0x00000000 +#define MIPS3_PG_D 0x00000004 /* Dirty */ + +#define mips3_paddr_to_tlbpfn(x) \ + (((unsigned long)(x) >> MIPS3_PG_SHIFT) & MIPS3_PG_FRAME) +#define mips3_tlbpfn_to_paddr(x) \ + ((unsigned long)((x) & MIPS3_PG_FRAME) << MIPS3_PG_SHIFT) + +#define MIPS3_PG_SHIFT 6 +#define MIPS3_PG_FRAME 0x3fffffc0 + +#define VPN2_MASK 0xffffe000 +#define TLB_IS_GLOBAL(x) (((x).tlb_lo0 & MIPS3_PG_G) && ((x).tlb_lo1 & MIPS3_PG_G)) +#define TLB_VPN2(x) ((x).tlb_hi & VPN2_MASK) +#define TLB_ASID(x) ((x).tlb_hi & ASID_MASK) +#define TLB_IS_VALID(x, va) (((va) & (1 << PAGE_SHIFT)) ? ((x).tlb_lo1 & MIPS3_PG_V) : ((x).tlb_lo0 & MIPS3_PG_V)) + +struct kvm_mips_tlb { + long tlb_mask; + long tlb_hi; + long tlb_lo0; + long tlb_lo1; +}; + +#define KVM_MIPS_GUEST_TLB_SIZE 64 +struct kvm_vcpu_arch { + void *host_ebase, *guest_ebase; + unsigned long host_stack; + unsigned long host_gp; + + /* Host CP0 registers used when handling exits from guest */ + unsigned long host_cp0_badvaddr; + unsigned long host_cp0_cause; + unsigned long host_cp0_epc; + unsigned long host_cp0_entryhi; + uint32_t guest_inst; + + /* GPRS */ + unsigned long gprs[32]; + unsigned long hi; + unsigned long lo; + unsigned long pc; + + /* FPU State */ + struct mips_fpu_struct fpu; + + /* COP0 State */ + struct mips_coproc *cop0; + + /* Host KSEG0 address of the EI/DI offset */ + void *kseg0_commpage; + + u32 io_gpr; /* GPR used as IO source/target */ + + /* Used to calibrate the virutal count register for the guest */ + int32_t host_cp0_count; + + /* Bitmask of exceptions that are pending */ + unsigned long pending_exceptions; + + /* Bitmask of pending exceptions to be cleared */ + unsigned long pending_exceptions_clr; + + unsigned long pending_load_cause; + + /* Save/Restore the entryhi register when are are preempted/scheduled back in */ + unsigned long preempt_entryhi; + + /* S/W Based TLB for guest */ + struct kvm_mips_tlb guest_tlb[KVM_MIPS_GUEST_TLB_SIZE]; + + /* Cached guest kernel/user ASIDs */ + uint32_t guest_user_asid[NR_CPUS]; + uint32_t guest_kernel_asid[NR_CPUS]; + struct mm_struct guest_kernel_mm, guest_user_mm; + + struct kvm_mips_tlb shadow_tlb[NR_CPUS][KVM_MIPS_GUEST_TLB_SIZE]; + + + struct hrtimer comparecount_timer; + + int last_sched_cpu; + + /* WAIT executed */ + int wait; +}; + + +#define kvm_read_c0_guest_index(cop0) (cop0->reg[MIPS_CP0_TLB_INDEX][0]) +#define kvm_write_c0_guest_index(cop0, val) (cop0->reg[MIPS_CP0_TLB_INDEX][0] = val) +#define kvm_read_c0_guest_entrylo0(cop0) (cop0->reg[MIPS_CP0_TLB_LO0][0]) +#define kvm_read_c0_guest_entrylo1(cop0) (cop0->reg[MIPS_CP0_TLB_LO1][0]) +#define kvm_read_c0_guest_context(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0]) +#define kvm_write_c0_guest_context(cop0, val) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0] = (val)) +#define kvm_read_c0_guest_userlocal(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][2]) +#define kvm_read_c0_guest_pagemask(cop0) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0]) +#define kvm_write_c0_guest_pagemask(cop0, val) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0] = (val)) +#define kvm_read_c0_guest_wired(cop0) (cop0->reg[MIPS_CP0_TLB_WIRED][0]) +#define kvm_write_c0_guest_wired(cop0, val) (cop0->reg[MIPS_CP0_TLB_WIRED][0] = (val)) +#define kvm_read_c0_guest_badvaddr(cop0) (cop0->reg[MIPS_CP0_BAD_VADDR][0]) +#define kvm_write_c0_guest_badvaddr(cop0, val) (cop0->reg[MIPS_CP0_BAD_VADDR][0] = (val)) +#define kvm_read_c0_guest_count(cop0) (cop0->reg[MIPS_CP0_COUNT][0]) +#define kvm_write_c0_guest_count(cop0, val) (cop0->reg[MIPS_CP0_COUNT][0] = (val)) +#define kvm_read_c0_guest_entryhi(cop0) (cop0->reg[MIPS_CP0_TLB_HI][0]) +#define kvm_write_c0_guest_entryhi(cop0, val) (cop0->reg[MIPS_CP0_TLB_HI][0] = (val)) +#define kvm_read_c0_guest_compare(cop0) (cop0->reg[MIPS_CP0_COMPARE][0]) +#define kvm_write_c0_guest_compare(cop0, val) (cop0->reg[MIPS_CP0_COMPARE][0] = (val)) +#define kvm_read_c0_guest_status(cop0) (cop0->reg[MIPS_CP0_STATUS][0]) +#define kvm_write_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] = (val)) +#define kvm_read_c0_guest_intctl(cop0) (cop0->reg[MIPS_CP0_STATUS][1]) +#define kvm_write_c0_guest_intctl(cop0, val) (cop0->reg[MIPS_CP0_STATUS][1] = (val)) +#define kvm_read_c0_guest_cause(cop0) (cop0->reg[MIPS_CP0_CAUSE][0]) +#define kvm_write_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] = (val)) +#define kvm_read_c0_guest_epc(cop0) (cop0->reg[MIPS_CP0_EXC_PC][0]) +#define kvm_write_c0_guest_epc(cop0, val) (cop0->reg[MIPS_CP0_EXC_PC][0] = (val)) +#define kvm_read_c0_guest_prid(cop0) (cop0->reg[MIPS_CP0_PRID][0]) +#define kvm_write_c0_guest_prid(cop0, val) (cop0->reg[MIPS_CP0_PRID][0] = (val)) +#define kvm_read_c0_guest_ebase(cop0) (cop0->reg[MIPS_CP0_PRID][1]) +#define kvm_write_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] = (val)) +#define kvm_read_c0_guest_config(cop0) (cop0->reg[MIPS_CP0_CONFIG][0]) +#define kvm_read_c0_guest_config1(cop0) (cop0->reg[MIPS_CP0_CONFIG][1]) +#define kvm_read_c0_guest_config2(cop0) (cop0->reg[MIPS_CP0_CONFIG][2]) +#define kvm_read_c0_guest_config3(cop0) (cop0->reg[MIPS_CP0_CONFIG][3]) +#define kvm_read_c0_guest_config7(cop0) (cop0->reg[MIPS_CP0_CONFIG][7]) +#define kvm_write_c0_guest_config(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][0] = (val)) +#define kvm_write_c0_guest_config1(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][1] = (val)) +#define kvm_write_c0_guest_config2(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][2] = (val)) +#define kvm_write_c0_guest_config3(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][3] = (val)) +#define kvm_write_c0_guest_config7(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][7] = (val)) +#define kvm_read_c0_guest_errorepc(cop0) (cop0->reg[MIPS_CP0_ERROR_PC][0]) +#define kvm_write_c0_guest_errorepc(cop0, val) (cop0->reg[MIPS_CP0_ERROR_PC][0] = (val)) + +#define kvm_set_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] |= (val)) +#define kvm_clear_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] &= ~(val)) +#define kvm_set_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] |= (val)) +#define kvm_clear_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] &= ~(val)) +#define kvm_change_c0_guest_cause(cop0, change, val) \ +{ \ + kvm_clear_c0_guest_cause(cop0, change); \ + kvm_set_c0_guest_cause(cop0, ((val) & (change))); \ +} +#define kvm_set_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] |= (val)) +#define kvm_clear_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] &= ~(val)) +#define kvm_change_c0_guest_ebase(cop0, change, val) \ +{ \ + kvm_clear_c0_guest_ebase(cop0, change); \ + kvm_set_c0_guest_ebase(cop0, ((val) & (change))); \ +} + + +struct kvm_mips_callbacks { + int (*handle_cop_unusable) (struct kvm_vcpu *vcpu); + int (*handle_tlb_mod) (struct kvm_vcpu *vcpu); + int (*handle_tlb_ld_miss) (struct kvm_vcpu *vcpu); + int (*handle_tlb_st_miss) (struct kvm_vcpu *vcpu); + int (*handle_addr_err_st) (struct kvm_vcpu *vcpu); + int (*handle_addr_err_ld) (struct kvm_vcpu *vcpu); + int (*handle_syscall) (struct kvm_vcpu *vcpu); + int (*handle_res_inst) (struct kvm_vcpu *vcpu); + int (*handle_break) (struct kvm_vcpu *vcpu); + int (*vm_init) (struct kvm *kvm); + int (*vcpu_init) (struct kvm_vcpu *vcpu); + int (*vcpu_setup) (struct kvm_vcpu *vcpu); + gpa_t(*gva_to_gpa) (gva_t gva); + void (*queue_timer_int) (struct kvm_vcpu *vcpu); + void (*dequeue_timer_int) (struct kvm_vcpu *vcpu); + void (*queue_io_int) (struct kvm_vcpu *vcpu, + struct kvm_mips_interrupt *irq); + void (*dequeue_io_int) (struct kvm_vcpu *vcpu, + struct kvm_mips_interrupt *irq); + int (*irq_deliver) (struct kvm_vcpu *vcpu, unsigned int priority, + uint32_t cause); + int (*irq_clear) (struct kvm_vcpu *vcpu, unsigned int priority, + uint32_t cause); + int (*vcpu_ioctl_get_regs) (struct kvm_vcpu *vcpu, + struct kvm_regs *regs); + int (*vcpu_ioctl_set_regs) (struct kvm_vcpu *vcpu, + struct kvm_regs *regs); +}; +extern struct kvm_mips_callbacks *kvm_mips_callbacks; +int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks); + +/* Debug: dump vcpu state */ +int kvm_arch_vcpu_dump_regs(struct kvm_vcpu *vcpu); + +/* Trampoline ASM routine to start running in "Guest" context */ +extern int __kvm_mips_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu); + +/* TLB handling */ +uint32_t kvm_get_kernel_asid(struct kvm_vcpu *vcpu); + +uint32_t kvm_get_user_asid(struct kvm_vcpu *vcpu); + +uint32_t kvm_get_commpage_asid (struct kvm_vcpu *vcpu); + +extern int kvm_mips_handle_kseg0_tlb_fault(unsigned long badbaddr, + struct kvm_vcpu *vcpu); + +extern int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr, + struct kvm_vcpu *vcpu); + +extern int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu, + struct kvm_mips_tlb *tlb, + unsigned long *hpa0, + unsigned long *hpa1); + +extern enum emulation_result kvm_mips_handle_tlbmiss(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_handle_tlbmod(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern void kvm_mips_dump_host_tlbs(void); +extern void kvm_mips_dump_guest_tlbs(struct kvm_vcpu *vcpu); +extern void kvm_mips_dump_shadow_tlbs(struct kvm_vcpu *vcpu); +extern void kvm_mips_flush_host_tlb(int skip_kseg0); +extern int kvm_mips_host_tlb_inv(struct kvm_vcpu *vcpu, unsigned long entryhi); +extern int kvm_mips_host_tlb_inv_index(struct kvm_vcpu *vcpu, int index); + +extern int kvm_mips_guest_tlb_lookup(struct kvm_vcpu *vcpu, + unsigned long entryhi); +extern int kvm_mips_host_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long vaddr); +extern unsigned long kvm_mips_translate_guest_kseg0_to_hpa(struct kvm_vcpu *vcpu, + unsigned long gva); +extern void kvm_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu, + struct kvm_vcpu *vcpu); +extern void kvm_shadow_tlb_put(struct kvm_vcpu *vcpu); +extern void kvm_shadow_tlb_load(struct kvm_vcpu *vcpu); +extern void kvm_local_flush_tlb_all(void); +extern void kvm_mips_init_shadow_tlb(struct kvm_vcpu *vcpu); +extern void kvm_mips_alloc_new_mmu_context(struct kvm_vcpu *vcpu); +extern void kvm_mips_vcpu_load(struct kvm_vcpu *vcpu, int cpu); +extern void kvm_mips_vcpu_put(struct kvm_vcpu *vcpu); + +/* Emulation */ +uint32_t kvm_get_inst(uint32_t *opc, struct kvm_vcpu *vcpu); +enum emulation_result update_pc(struct kvm_vcpu *vcpu, uint32_t cause); + +extern enum emulation_result kvm_mips_emulate_inst(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_syscall(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_tlbmiss_ld(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_tlbinv_ld(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_tlbmiss_st(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_tlbinv_st(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_tlbmod(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_fpu_exc(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_handle_ri(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_ri_exc(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_emulate_bp_exc(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu, + struct kvm_run *run); + +enum emulation_result kvm_mips_emulate_count(struct kvm_vcpu *vcpu); + +enum emulation_result kvm_mips_check_privilege(unsigned long cause, + uint32_t *opc, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +enum emulation_result kvm_mips_emulate_cache(uint32_t inst, + uint32_t *opc, + uint32_t cause, + struct kvm_run *run, + struct kvm_vcpu *vcpu); +enum emulation_result kvm_mips_emulate_CP0(uint32_t inst, + uint32_t *opc, + uint32_t cause, + struct kvm_run *run, + struct kvm_vcpu *vcpu); +enum emulation_result kvm_mips_emulate_store(uint32_t inst, + uint32_t cause, + struct kvm_run *run, + struct kvm_vcpu *vcpu); +enum emulation_result kvm_mips_emulate_load(uint32_t inst, + uint32_t cause, + struct kvm_run *run, + struct kvm_vcpu *vcpu); + +/* Dynamic binary translation */ +extern int kvm_mips_trans_cache_index(uint32_t inst, uint32_t *opc, + struct kvm_vcpu *vcpu); +extern int kvm_mips_trans_cache_va(uint32_t inst, uint32_t *opc, + struct kvm_vcpu *vcpu); +extern int kvm_mips_trans_mfc0(uint32_t inst, uint32_t *opc, + struct kvm_vcpu *vcpu); +extern int kvm_mips_trans_mtc0(uint32_t inst, uint32_t *opc, + struct kvm_vcpu *vcpu); + +/* Misc */ +extern void mips32_SyncICache(unsigned long addr, unsigned long size); +extern int kvm_mips_dump_stats(struct kvm_vcpu *vcpu); +extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm); + + +#endif /* __MIPS_KVM_HOST_H__ */