diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kvm/book3s_pr_papr.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kvm/book3s_pr_papr.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kvm/book3s_pr_papr.c b/ANDROID_3.4.5/arch/powerpc/kvm/book3s_pr_papr.c deleted file mode 100644 index b9589324..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kvm/book3s_pr_papr.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Copyright (C) 2011. Freescale Inc. All rights reserved. - * - * Authors: - * Alexander Graf <agraf@suse.de> - * Paul Mackerras <paulus@samba.org> - * - * Description: - * - * Hypercall handling for running PAPR guests in PR KVM on Book 3S - * processors. - * - * 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. - */ - -#include <asm/uaccess.h> -#include <asm/kvm_ppc.h> -#include <asm/kvm_book3s.h> - -static unsigned long get_pteg_addr(struct kvm_vcpu *vcpu, long pte_index) -{ - struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu); - unsigned long pteg_addr; - - pte_index <<= 4; - pte_index &= ((1 << ((vcpu_book3s->sdr1 & 0x1f) + 11)) - 1) << 7 | 0x70; - pteg_addr = vcpu_book3s->sdr1 & 0xfffffffffffc0000ULL; - pteg_addr |= pte_index; - - return pteg_addr; -} - -static int kvmppc_h_pr_enter(struct kvm_vcpu *vcpu) -{ - long flags = kvmppc_get_gpr(vcpu, 4); - long pte_index = kvmppc_get_gpr(vcpu, 5); - unsigned long pteg[2 * 8]; - unsigned long pteg_addr, i, *hpte; - - pte_index &= ~7UL; - pteg_addr = get_pteg_addr(vcpu, pte_index); - - copy_from_user(pteg, (void __user *)pteg_addr, sizeof(pteg)); - hpte = pteg; - - if (likely((flags & H_EXACT) == 0)) { - pte_index &= ~7UL; - for (i = 0; ; ++i) { - if (i == 8) - return H_PTEG_FULL; - if ((*hpte & HPTE_V_VALID) == 0) - break; - hpte += 2; - } - } else { - i = kvmppc_get_gpr(vcpu, 5) & 7UL; - hpte += i * 2; - } - - hpte[0] = kvmppc_get_gpr(vcpu, 6); - hpte[1] = kvmppc_get_gpr(vcpu, 7); - copy_to_user((void __user *)pteg_addr, pteg, sizeof(pteg)); - kvmppc_set_gpr(vcpu, 3, H_SUCCESS); - kvmppc_set_gpr(vcpu, 4, pte_index | i); - - return EMULATE_DONE; -} - -static int kvmppc_h_pr_remove(struct kvm_vcpu *vcpu) -{ - unsigned long flags= kvmppc_get_gpr(vcpu, 4); - unsigned long pte_index = kvmppc_get_gpr(vcpu, 5); - unsigned long avpn = kvmppc_get_gpr(vcpu, 6); - unsigned long v = 0, pteg, rb; - unsigned long pte[2]; - - pteg = get_pteg_addr(vcpu, pte_index); - copy_from_user(pte, (void __user *)pteg, sizeof(pte)); - - if ((pte[0] & HPTE_V_VALID) == 0 || - ((flags & H_AVPN) && (pte[0] & ~0x7fUL) != avpn) || - ((flags & H_ANDCOND) && (pte[0] & avpn) != 0)) { - kvmppc_set_gpr(vcpu, 3, H_NOT_FOUND); - return EMULATE_DONE; - } - - copy_to_user((void __user *)pteg, &v, sizeof(v)); - - rb = compute_tlbie_rb(pte[0], pte[1], pte_index); - vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false); - - kvmppc_set_gpr(vcpu, 3, H_SUCCESS); - kvmppc_set_gpr(vcpu, 4, pte[0]); - kvmppc_set_gpr(vcpu, 5, pte[1]); - - return EMULATE_DONE; -} - -static int kvmppc_h_pr_protect(struct kvm_vcpu *vcpu) -{ - unsigned long flags = kvmppc_get_gpr(vcpu, 4); - unsigned long pte_index = kvmppc_get_gpr(vcpu, 5); - unsigned long avpn = kvmppc_get_gpr(vcpu, 6); - unsigned long rb, pteg, r, v; - unsigned long pte[2]; - - pteg = get_pteg_addr(vcpu, pte_index); - copy_from_user(pte, (void __user *)pteg, sizeof(pte)); - - if ((pte[0] & HPTE_V_VALID) == 0 || - ((flags & H_AVPN) && (pte[0] & ~0x7fUL) != avpn)) { - kvmppc_set_gpr(vcpu, 3, H_NOT_FOUND); - return EMULATE_DONE; - } - - v = pte[0]; - r = pte[1]; - r &= ~(HPTE_R_PP0 | HPTE_R_PP | HPTE_R_N | HPTE_R_KEY_HI | - HPTE_R_KEY_LO); - r |= (flags << 55) & HPTE_R_PP0; - r |= (flags << 48) & HPTE_R_KEY_HI; - r |= flags & (HPTE_R_PP | HPTE_R_N | HPTE_R_KEY_LO); - - pte[1] = r; - - rb = compute_tlbie_rb(v, r, pte_index); - vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false); - copy_to_user((void __user *)pteg, pte, sizeof(pte)); - - kvmppc_set_gpr(vcpu, 3, H_SUCCESS); - - return EMULATE_DONE; -} - -int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd) -{ - switch (cmd) { - case H_ENTER: - return kvmppc_h_pr_enter(vcpu); - case H_REMOVE: - return kvmppc_h_pr_remove(vcpu); - case H_PROTECT: - return kvmppc_h_pr_protect(vcpu); - case H_BULK_REMOVE: - /* We just flush all PTEs, so user space can - handle the HPT modifications */ - kvmppc_mmu_pte_flush(vcpu, 0, 0); - break; - case H_CEDE: - kvm_vcpu_block(vcpu); - vcpu->stat.halt_wakeup++; - return EMULATE_DONE; - } - - return EMULATE_FAIL; -} |