diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kvm/book3s_rmhandlers.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kvm/book3s_rmhandlers.S | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kvm/book3s_rmhandlers.S b/ANDROID_3.4.5/arch/powerpc/kvm/book3s_rmhandlers.S deleted file mode 100644 index 34187585..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kvm/book3s_rmhandlers.S +++ /dev/null @@ -1,242 +0,0 @@ -/* - * 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, write to the Free Software - * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * Copyright SUSE Linux Products GmbH 2009 - * - * Authors: Alexander Graf <agraf@suse.de> - */ - -#include <asm/ppc_asm.h> -#include <asm/kvm_asm.h> -#include <asm/reg.h> -#include <asm/mmu.h> -#include <asm/page.h> -#include <asm/asm-offsets.h> - -#ifdef CONFIG_PPC_BOOK3S_64 -#include <asm/exception-64s.h> -#endif - -/***************************************************************************** - * * - * Real Mode handlers that need to be in low physical memory * - * * - ****************************************************************************/ - -#if defined(CONFIG_PPC_BOOK3S_64) - -#define FUNC(name) GLUE(.,name) -#define MTMSR_EERI(reg) mtmsrd (reg),1 - - .globl kvmppc_skip_interrupt -kvmppc_skip_interrupt: - /* - * Here all GPRs are unchanged from when the interrupt happened - * except for r13, which is saved in SPRG_SCRATCH0. - */ - mfspr r13, SPRN_SRR0 - addi r13, r13, 4 - mtspr SPRN_SRR0, r13 - GET_SCRATCH0(r13) - rfid - b . - - .globl kvmppc_skip_Hinterrupt -kvmppc_skip_Hinterrupt: - /* - * Here all GPRs are unchanged from when the interrupt happened - * except for r13, which is saved in SPRG_SCRATCH0. - */ - mfspr r13, SPRN_HSRR0 - addi r13, r13, 4 - mtspr SPRN_HSRR0, r13 - GET_SCRATCH0(r13) - hrfid - b . - -#elif defined(CONFIG_PPC_BOOK3S_32) - -#define FUNC(name) name -#define MTMSR_EERI(reg) mtmsr (reg) - -.macro INTERRUPT_TRAMPOLINE intno - -.global kvmppc_trampoline_\intno -kvmppc_trampoline_\intno: - - mtspr SPRN_SPRG_SCRATCH0, r13 /* Save r13 */ - - /* - * First thing to do is to find out if we're coming - * from a KVM guest or a Linux process. - * - * To distinguish, we check a magic byte in the PACA/current - */ - mfspr r13, SPRN_SPRG_THREAD - lwz r13, THREAD_KVM_SVCPU(r13) - /* PPC32 can have a NULL pointer - let's check for that */ - mtspr SPRN_SPRG_SCRATCH1, r12 /* Save r12 */ - mfcr r12 - cmpwi r13, 0 - bne 1f -2: mtcr r12 - mfspr r12, SPRN_SPRG_SCRATCH1 - mfspr r13, SPRN_SPRG_SCRATCH0 /* r13 = original r13 */ - b kvmppc_resume_\intno /* Get back original handler */ - -1: tophys(r13, r13) - stw r12, HSTATE_SCRATCH1(r13) - mfspr r12, SPRN_SPRG_SCRATCH1 - stw r12, HSTATE_SCRATCH0(r13) - lbz r12, HSTATE_IN_GUEST(r13) - cmpwi r12, KVM_GUEST_MODE_NONE - bne ..kvmppc_handler_hasmagic_\intno - /* No KVM guest? Then jump back to the Linux handler! */ - lwz r12, HSTATE_SCRATCH1(r13) - b 2b - - /* Now we know we're handling a KVM guest */ -..kvmppc_handler_hasmagic_\intno: - - /* Should we just skip the faulting instruction? */ - cmpwi r12, KVM_GUEST_MODE_SKIP - beq kvmppc_handler_skip_ins - - /* Let's store which interrupt we're handling */ - li r12, \intno - - /* Jump into the SLB exit code that goes to the highmem handler */ - b kvmppc_handler_trampoline_exit - -.endm - -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_SYSTEM_RESET -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_MACHINE_CHECK -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_DATA_STORAGE -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_INST_STORAGE -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_EXTERNAL -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_ALIGNMENT -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_PROGRAM -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_FP_UNAVAIL -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_DECREMENTER -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_SYSCALL -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_TRACE -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_PERFMON -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_ALTIVEC - -/* - * Bring us back to the faulting code, but skip the - * faulting instruction. - * - * This is a generic exit path from the interrupt - * trampolines above. - * - * Input Registers: - * - * R12 = free - * R13 = Shadow VCPU (PACA) - * HSTATE.SCRATCH0 = guest R12 - * HSTATE.SCRATCH1 = guest CR - * SPRG_SCRATCH0 = guest R13 - * - */ -kvmppc_handler_skip_ins: - - /* Patch the IP to the next instruction */ - mfsrr0 r12 - addi r12, r12, 4 - mtsrr0 r12 - - /* Clean up all state */ - lwz r12, HSTATE_SCRATCH1(r13) - mtcr r12 - PPC_LL r12, HSTATE_SCRATCH0(r13) - GET_SCRATCH0(r13) - - /* And get back into the code */ - RFI -#endif - -/* - * Call kvmppc_handler_trampoline_enter in real mode - * - * On entry, r4 contains the guest shadow MSR - */ -_GLOBAL(kvmppc_entry_trampoline) - mfmsr r5 - LOAD_REG_ADDR(r7, kvmppc_handler_trampoline_enter) - toreal(r7) - - li r9, MSR_RI - ori r9, r9, MSR_EE - andc r9, r5, r9 /* Clear EE and RI in MSR value */ - li r6, MSR_IR | MSR_DR - ori r6, r6, MSR_EE - andc r6, r5, r6 /* Clear EE, DR and IR in MSR value */ - MTMSR_EERI(r9) /* Clear EE and RI in MSR */ - mtsrr0 r7 /* before we set srr0/1 */ - mtsrr1 r6 - RFI - -#if defined(CONFIG_PPC_BOOK3S_32) -#define STACK_LR INT_FRAME_SIZE+4 - -/* load_up_xxx have to run with MSR_DR=0 on Book3S_32 */ -#define MSR_EXT_START \ - PPC_STL r20, _NIP(r1); \ - mfmsr r20; \ - LOAD_REG_IMMEDIATE(r3, MSR_DR|MSR_EE); \ - andc r3,r20,r3; /* Disable DR,EE */ \ - mtmsr r3; \ - sync - -#define MSR_EXT_END \ - mtmsr r20; /* Enable DR,EE */ \ - sync; \ - PPC_LL r20, _NIP(r1) - -#elif defined(CONFIG_PPC_BOOK3S_64) -#define STACK_LR _LINK -#define MSR_EXT_START -#define MSR_EXT_END -#endif - -/* - * Activate current's external feature (FPU/Altivec/VSX) - */ -#define define_load_up(what) \ - \ -_GLOBAL(kvmppc_load_up_ ## what); \ - PPC_STLU r1, -INT_FRAME_SIZE(r1); \ - mflr r3; \ - PPC_STL r3, STACK_LR(r1); \ - MSR_EXT_START; \ - \ - bl FUNC(load_up_ ## what); \ - \ - MSR_EXT_END; \ - PPC_LL r3, STACK_LR(r1); \ - mtlr r3; \ - addi r1, r1, INT_FRAME_SIZE; \ - blr - -define_load_up(fpu) -#ifdef CONFIG_ALTIVEC -define_load_up(altivec) -#endif -#ifdef CONFIG_VSX -define_load_up(vsx) -#endif - -#include "book3s_segment.S" |