KVM: PPC: e500: rename e500_tlb.h to e500.h

This is in preparation for merging in the contents of
arch/powerpc/include/asm/kvm_e500.h.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 174 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h
new file mode 100644
index 000000000000..02ecde261bc1
--- /dev/null
+++ b/arch/powerpc/kvm/e500.h
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: Yu Liu, yu.liu@freescale.com
+ *
+ * Description:
+ * This file is based on arch/powerpc/kvm/44x_tlb.h,
+ * by Hollis Blanchard <hollisb@us.ibm.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.
+ */
+
+#ifndef KVM_E500_H
+#define KVM_E500_H
+
+#include <linux/kvm_host.h>
+#include <asm/mmu-book3e.h>
+#include <asm/tlb.h>
+#include <asm/kvm_e500.h>
+
+/* This geometry is the legacy default -- can be overridden by userspace */
+#define KVM_E500_TLB0_WAY_SIZE          128
+#define KVM_E500_TLB0_WAY_NUM           2
+
+#define KVM_E500_TLB0_SIZE  (KVM_E500_TLB0_WAY_SIZE * KVM_E500_TLB0_WAY_NUM)
+#define KVM_E500_TLB1_SIZE  16
+
+#define index_of(tlbsel, esel)  (((tlbsel) << 16) | ((esel) & 0xFFFF))
+#define tlbsel_of(index)        ((index) >> 16)
+#define esel_of(index)          ((index) & 0xFFFF)
+
+#define E500_TLB_USER_PERM_MASK (MAS3_UX|MAS3_UR|MAS3_UW)
+#define E500_TLB_SUPER_PERM_MASK (MAS3_SX|MAS3_SR|MAS3_SW)
+#define MAS2_ATTRIB_MASK \
+          (MAS2_X0 | MAS2_X1)
+#define MAS3_ATTRIB_MASK \
+          (MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3 \
+           | E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK)
+
+extern void kvmppc_dump_tlbs(struct kvm_vcpu *);
+extern int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *, ulong);
+extern int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *);
+extern int kvmppc_e500_emul_tlbre(struct kvm_vcpu *);
+extern int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *, int, int);
+extern int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *, int);
+extern int kvmppc_e500_tlb_search(struct kvm_vcpu *, gva_t, unsigned int, int);
+extern void kvmppc_e500_tlb_put(struct kvm_vcpu *);
+extern void kvmppc_e500_tlb_load(struct kvm_vcpu *, int);
+extern int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *);
+extern void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *);
+extern void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *);
+extern void kvmppc_e500_recalc_shadow_pid(struct kvmppc_vcpu_e500 *);
+
+/* TLB helper functions */
+static inline unsigned int
+get_tlb_size(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        return (tlbe->mas1 >> 7) & 0x1f;
+}
+
+static inline gva_t get_tlb_eaddr(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        return tlbe->mas2 & 0xfffff000;
+}
+
+static inline u64 get_tlb_bytes(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        unsigned int pgsize = get_tlb_size(tlbe);
+        return 1ULL << 10 << pgsize;
+}
+
+static inline gva_t get_tlb_end(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        u64 bytes = get_tlb_bytes(tlbe);
+        return get_tlb_eaddr(tlbe) + bytes - 1;
+}
+
+static inline u64 get_tlb_raddr(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        return tlbe->mas7_3 & ~0xfffULL;
+}
+
+static inline unsigned int
+get_tlb_tid(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        return (tlbe->mas1 >> 16) & 0xff;
+}
+
+static inline unsigned int
+get_tlb_ts(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        return (tlbe->mas1 >> 12) & 0x1;
+}
+
+static inline unsigned int
+get_tlb_v(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        return (tlbe->mas1 >> 31) & 0x1;
+}
+
+static inline unsigned int
+get_tlb_iprot(const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        return (tlbe->mas1 >> 30) & 0x1;
+}
+
+static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu)
+{
+        return vcpu->arch.pid & 0xff;
+}
+
+static inline unsigned int get_cur_as(struct kvm_vcpu *vcpu)
+{
+        return !!(vcpu->arch.shared->msr & (MSR_IS | MSR_DS));
+}
+
+static inline unsigned int get_cur_pr(struct kvm_vcpu *vcpu)
+{
+        return !!(vcpu->arch.shared->msr & MSR_PR);
+}
+
+static inline unsigned int get_cur_spid(const struct kvm_vcpu *vcpu)
+{
+        return (vcpu->arch.shared->mas6 >> 16) & 0xff;
+}
+
+static inline unsigned int get_cur_sas(const struct kvm_vcpu *vcpu)
+{
+        return vcpu->arch.shared->mas6 & 0x1;
+}
+
+static inline unsigned int get_tlb_tlbsel(const struct kvm_vcpu *vcpu)
+{
+        /*
+         * Manual says that tlbsel has 2 bits wide.
+         * Since we only have two TLBs, only lower bit is used.
+         */
+        return (vcpu->arch.shared->mas0 >> 28) & 0x1;
+}
+
+static inline unsigned int get_tlb_nv_bit(const struct kvm_vcpu *vcpu)
+{
+        return vcpu->arch.shared->mas0 & 0xfff;
+}
+
+static inline unsigned int get_tlb_esel_bit(const struct kvm_vcpu *vcpu)
+{
+        return (vcpu->arch.shared->mas0 >> 16) & 0xfff;
+}
+
+static inline int tlbe_is_host_safe(const struct kvm_vcpu *vcpu,
+                        const struct kvm_book3e_206_tlb_entry *tlbe)
+{
+        gpa_t gpa;
+
+        if (!get_tlb_v(tlbe))
+                return 0;
+
+        /* Does it match current guest AS? */
+        /* XXX what about IS != DS? */
+        if (get_tlb_ts(tlbe) != !!(vcpu->arch.shared->msr & MSR_IS))
+                return 0;
+
+        gpa = get_tlb_raddr(tlbe);
+        if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT))
+                /* Mapping is not for RAM. */
+                return 0;
+
+        return 1;
+}
+
+#endif /* KVM_E500_H */