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-rw-r--r--arch/powerpc/kvm/e500_tlb.c1430
1 files changed, 0 insertions, 1430 deletions
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c
deleted file mode 100644
index cf3f18012371..000000000000
--- a/arch/powerpc/kvm/e500_tlb.c
+++ /dev/null
@@ -1,1430 +0,0 @@
-/*
- * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
- *
- * Author: Yu Liu, yu.liu@freescale.com
- * Scott Wood, scottwood@freescale.com
- * Ashish Kalra, ashish.kalra@freescale.com
- * Varun Sethi, varun.sethi@freescale.com
- *
- * Description:
- * This file is based on arch/powerpc/kvm/44x_tlb.c,
- * 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.
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/kvm.h>
-#include <linux/kvm_host.h>
-#include <linux/highmem.h>
-#include <linux/log2.h>
-#include <linux/uaccess.h>
-#include <linux/sched.h>
-#include <linux/rwsem.h>
-#include <linux/vmalloc.h>
-#include <linux/hugetlb.h>
-#include <asm/kvm_ppc.h>
-
-#include "e500.h"
-#include "trace.h"
-#include "timing.h"
-
-#define to_htlb1_esel(esel) (host_tlb_params[1].entries - (esel) - 1)
-
-static struct kvmppc_e500_tlb_params host_tlb_params[E500_TLB_NUM];
-
-static inline unsigned int gtlb0_get_next_victim(
- struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- unsigned int victim;
-
- victim = vcpu_e500->gtlb_nv[0]++;
- if (unlikely(vcpu_e500->gtlb_nv[0] >= vcpu_e500->gtlb_params[0].ways))
- vcpu_e500->gtlb_nv[0] = 0;
-
- return victim;
-}
-
-static inline unsigned int tlb1_max_shadow_size(void)
-{
- /* reserve one entry for magic page */
- return host_tlb_params[1].entries - tlbcam_index - 1;
-}
-
-static inline int tlbe_is_writable(struct kvm_book3e_206_tlb_entry *tlbe)
-{
- return tlbe->mas7_3 & (MAS3_SW|MAS3_UW);
-}
-
-static inline u32 e500_shadow_mas3_attrib(u32 mas3, int usermode)
-{
- /* Mask off reserved bits. */
- mas3 &= MAS3_ATTRIB_MASK;
-
-#ifndef CONFIG_KVM_BOOKE_HV
- if (!usermode) {
- /* Guest is in supervisor mode,
- * so we need to translate guest
- * supervisor permissions into user permissions. */
- mas3 &= ~E500_TLB_USER_PERM_MASK;
- mas3 |= (mas3 & E500_TLB_SUPER_PERM_MASK) << 1;
- }
- mas3 |= E500_TLB_SUPER_PERM_MASK;
-#endif
- return mas3;
-}
-
-static inline u32 e500_shadow_mas2_attrib(u32 mas2, int usermode)
-{
-#ifdef CONFIG_SMP
- return (mas2 & MAS2_ATTRIB_MASK) | MAS2_M;
-#else
- return mas2 & MAS2_ATTRIB_MASK;
-#endif
-}
-
-/*
- * writing shadow tlb entry to host TLB
- */
-static inline void __write_host_tlbe(struct kvm_book3e_206_tlb_entry *stlbe,
- uint32_t mas0)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- mtspr(SPRN_MAS0, mas0);
- mtspr(SPRN_MAS1, stlbe->mas1);
- mtspr(SPRN_MAS2, (unsigned long)stlbe->mas2);
- mtspr(SPRN_MAS3, (u32)stlbe->mas7_3);
- mtspr(SPRN_MAS7, (u32)(stlbe->mas7_3 >> 32));
-#ifdef CONFIG_KVM_BOOKE_HV
- mtspr(SPRN_MAS8, stlbe->mas8);
-#endif
- asm volatile("isync; tlbwe" : : : "memory");
-
-#ifdef CONFIG_KVM_BOOKE_HV
- /* Must clear mas8 for other host tlbwe's */
- mtspr(SPRN_MAS8, 0);
- isync();
-#endif
- local_irq_restore(flags);
-
- trace_kvm_booke206_stlb_write(mas0, stlbe->mas8, stlbe->mas1,
- stlbe->mas2, stlbe->mas7_3);
-}
-
-/*
- * Acquire a mas0 with victim hint, as if we just took a TLB miss.
- *
- * We don't care about the address we're searching for, other than that it's
- * in the right set and is not present in the TLB. Using a zero PID and a
- * userspace address means we don't have to set and then restore MAS5, or
- * calculate a proper MAS6 value.
- */
-static u32 get_host_mas0(unsigned long eaddr)
-{
- unsigned long flags;
- u32 mas0;
-
- local_irq_save(flags);
- mtspr(SPRN_MAS6, 0);
- asm volatile("tlbsx 0, %0" : : "b" (eaddr & ~CONFIG_PAGE_OFFSET));
- mas0 = mfspr(SPRN_MAS0);
- local_irq_restore(flags);
-
- return mas0;
-}
-
-/* sesel is for tlb1 only */
-static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
- int tlbsel, int sesel, struct kvm_book3e_206_tlb_entry *stlbe)
-{
- u32 mas0;
-
- if (tlbsel == 0) {
- mas0 = get_host_mas0(stlbe->mas2);
- __write_host_tlbe(stlbe, mas0);
- } else {
- __write_host_tlbe(stlbe,
- MAS0_TLBSEL(1) |
- MAS0_ESEL(to_htlb1_esel(sesel)));
- }
-}
-
-#ifdef CONFIG_KVM_E500V2
-void kvmppc_map_magic(struct kvm_vcpu *vcpu)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- struct kvm_book3e_206_tlb_entry magic;
- ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
- unsigned int stid;
- pfn_t pfn;
-
- pfn = (pfn_t)virt_to_phys((void *)shared_page) >> PAGE_SHIFT;
- get_page(pfn_to_page(pfn));
-
- preempt_disable();
- stid = kvmppc_e500_get_sid(vcpu_e500, 0, 0, 0, 0);
-
- magic.mas1 = MAS1_VALID | MAS1_TS | MAS1_TID(stid) |
- MAS1_TSIZE(BOOK3E_PAGESZ_4K);
- magic.mas2 = vcpu->arch.magic_page_ea | MAS2_M;
- magic.mas7_3 = ((u64)pfn << PAGE_SHIFT) |
- MAS3_SW | MAS3_SR | MAS3_UW | MAS3_UR;
- magic.mas8 = 0;
-
- __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index));
- preempt_enable();
-}
-#endif
-
-static void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500,
- int tlbsel, int esel)
-{
- struct kvm_book3e_206_tlb_entry *gtlbe =
- get_entry(vcpu_e500, tlbsel, esel);
-
- if (tlbsel == 1 &&
- vcpu_e500->gtlb_priv[1][esel].ref.flags & E500_TLB_BITMAP) {
- u64 tmp = vcpu_e500->g2h_tlb1_map[esel];
- int hw_tlb_indx;
- unsigned long flags;
-
- local_irq_save(flags);
- while (tmp) {
- hw_tlb_indx = __ilog2_u64(tmp & -tmp);
- mtspr(SPRN_MAS0,
- MAS0_TLBSEL(1) |
- MAS0_ESEL(to_htlb1_esel(hw_tlb_indx)));
- mtspr(SPRN_MAS1, 0);
- asm volatile("tlbwe");
- vcpu_e500->h2g_tlb1_rmap[hw_tlb_indx] = 0;
- tmp &= tmp - 1;
- }
- mb();
- vcpu_e500->g2h_tlb1_map[esel] = 0;
- vcpu_e500->gtlb_priv[1][esel].ref.flags &= ~E500_TLB_BITMAP;
- local_irq_restore(flags);
-
- return;
- }
-
- /* Guest tlbe is backed by at most one host tlbe per shadow pid. */
- kvmppc_e500_tlbil_one(vcpu_e500, gtlbe);
-}
-
-static int tlb0_set_base(gva_t addr, int sets, int ways)
-{
- int set_base;
-
- set_base = (addr >> PAGE_SHIFT) & (sets - 1);
- set_base *= ways;
-
- return set_base;
-}
-
-static int gtlb0_set_base(struct kvmppc_vcpu_e500 *vcpu_e500, gva_t addr)
-{
- return tlb0_set_base(addr, vcpu_e500->gtlb_params[0].sets,
- vcpu_e500->gtlb_params[0].ways);
-}
-
-static unsigned int get_tlb_esel(struct kvm_vcpu *vcpu, int tlbsel)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- int esel = get_tlb_esel_bit(vcpu);
-
- if (tlbsel == 0) {
- esel &= vcpu_e500->gtlb_params[0].ways - 1;
- esel += gtlb0_set_base(vcpu_e500, vcpu->arch.shared->mas2);
- } else {
- esel &= vcpu_e500->gtlb_params[tlbsel].entries - 1;
- }
-
- return esel;
-}
-
-/* Search the guest TLB for a matching entry. */
-static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500,
- gva_t eaddr, int tlbsel, unsigned int pid, int as)
-{
- int size = vcpu_e500->gtlb_params[tlbsel].entries;
- unsigned int set_base, offset;
- int i;
-
- if (tlbsel == 0) {
- set_base = gtlb0_set_base(vcpu_e500, eaddr);
- size = vcpu_e500->gtlb_params[0].ways;
- } else {
- if (eaddr < vcpu_e500->tlb1_min_eaddr ||
- eaddr > vcpu_e500->tlb1_max_eaddr)
- return -1;
- set_base = 0;
- }
-
- offset = vcpu_e500->gtlb_offset[tlbsel];
-
- for (i = 0; i < size; i++) {
- struct kvm_book3e_206_tlb_entry *tlbe =
- &vcpu_e500->gtlb_arch[offset + set_base + i];
- unsigned int tid;
-
- if (eaddr < get_tlb_eaddr(tlbe))
- continue;
-
- if (eaddr > get_tlb_end(tlbe))
- continue;
-
- tid = get_tlb_tid(tlbe);
- if (tid && (tid != pid))
- continue;
-
- if (!get_tlb_v(tlbe))
- continue;
-
- if (get_tlb_ts(tlbe) != as && as != -1)
- continue;
-
- return set_base + i;
- }
-
- return -1;
-}
-
-static inline void kvmppc_e500_ref_setup(struct tlbe_ref *ref,
- struct kvm_book3e_206_tlb_entry *gtlbe,
- pfn_t pfn)
-{
- ref->pfn = pfn;
- ref->flags = E500_TLB_VALID;
-
- if (tlbe_is_writable(gtlbe))
- kvm_set_pfn_dirty(pfn);
-}
-
-static inline void kvmppc_e500_ref_release(struct tlbe_ref *ref)
-{
- if (ref->flags & E500_TLB_VALID) {
- trace_kvm_booke206_ref_release(ref->pfn, ref->flags);
- ref->flags = 0;
- }
-}
-
-static void clear_tlb1_bitmap(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- if (vcpu_e500->g2h_tlb1_map)
- memset(vcpu_e500->g2h_tlb1_map, 0,
- sizeof(u64) * vcpu_e500->gtlb_params[1].entries);
- if (vcpu_e500->h2g_tlb1_rmap)
- memset(vcpu_e500->h2g_tlb1_rmap, 0,
- sizeof(unsigned int) * host_tlb_params[1].entries);
-}
-
-static void clear_tlb_privs(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- int tlbsel = 0;
- int i;
-
- for (i = 0; i < vcpu_e500->gtlb_params[tlbsel].entries; i++) {
- struct tlbe_ref *ref =
- &vcpu_e500->gtlb_priv[tlbsel][i].ref;
- kvmppc_e500_ref_release(ref);
- }
-}
-
-static void clear_tlb_refs(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- int stlbsel = 1;
- int i;
-
- kvmppc_e500_tlbil_all(vcpu_e500);
-
- for (i = 0; i < host_tlb_params[stlbsel].entries; i++) {
- struct tlbe_ref *ref =
- &vcpu_e500->tlb_refs[stlbsel][i];
- kvmppc_e500_ref_release(ref);
- }
-
- clear_tlb_privs(vcpu_e500);
-}
-
-void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- clear_tlb_refs(vcpu_e500);
- clear_tlb1_bitmap(vcpu_e500);
-}
-
-static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu,
- unsigned int eaddr, int as)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- unsigned int victim, tsized;
- int tlbsel;
-
- /* since we only have two TLBs, only lower bit is used. */
- tlbsel = (vcpu->arch.shared->mas4 >> 28) & 0x1;
- victim = (tlbsel == 0) ? gtlb0_get_next_victim(vcpu_e500) : 0;
- tsized = (vcpu->arch.shared->mas4 >> 7) & 0x1f;
-
- vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim)
- | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]);
- vcpu->arch.shared->mas1 = MAS1_VALID | (as ? MAS1_TS : 0)
- | MAS1_TID(get_tlbmiss_tid(vcpu))
- | MAS1_TSIZE(tsized);
- vcpu->arch.shared->mas2 = (eaddr & MAS2_EPN)
- | (vcpu->arch.shared->mas4 & MAS2_ATTRIB_MASK);
- vcpu->arch.shared->mas7_3 &= MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3;
- vcpu->arch.shared->mas6 = (vcpu->arch.shared->mas6 & MAS6_SPID1)
- | (get_cur_pid(vcpu) << 16)
- | (as ? MAS6_SAS : 0);
-}
-
-/* TID must be supplied by the caller */
-static inline void kvmppc_e500_setup_stlbe(
- struct kvm_vcpu *vcpu,
- struct kvm_book3e_206_tlb_entry *gtlbe,
- int tsize, struct tlbe_ref *ref, u64 gvaddr,
- struct kvm_book3e_206_tlb_entry *stlbe)
-{
- pfn_t pfn = ref->pfn;
- u32 pr = vcpu->arch.shared->msr & MSR_PR;
-
- BUG_ON(!(ref->flags & E500_TLB_VALID));
-
- /* Force IPROT=0 for all guest mappings. */
- stlbe->mas1 = MAS1_TSIZE(tsize) | get_tlb_sts(gtlbe) | MAS1_VALID;
- stlbe->mas2 = (gvaddr & MAS2_EPN) |
- e500_shadow_mas2_attrib(gtlbe->mas2, pr);
- stlbe->mas7_3 = ((u64)pfn << PAGE_SHIFT) |
- e500_shadow_mas3_attrib(gtlbe->mas7_3, pr);
-
-#ifdef CONFIG_KVM_BOOKE_HV
- stlbe->mas8 = MAS8_TGS | vcpu->kvm->arch.lpid;
-#endif
-}
-
-static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
- u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe,
- int tlbsel, struct kvm_book3e_206_tlb_entry *stlbe,
- struct tlbe_ref *ref)
-{
- struct kvm_memory_slot *slot;
- unsigned long pfn = 0; /* silence GCC warning */
- unsigned long hva;
- int pfnmap = 0;
- int tsize = BOOK3E_PAGESZ_4K;
-
- /*
- * Translate guest physical to true physical, acquiring
- * a page reference if it is normal, non-reserved memory.
- *
- * gfn_to_memslot() must succeed because otherwise we wouldn't
- * have gotten this far. Eventually we should just pass the slot
- * pointer through from the first lookup.
- */
- slot = gfn_to_memslot(vcpu_e500->vcpu.kvm, gfn);
- hva = gfn_to_hva_memslot(slot, gfn);
-
- if (tlbsel == 1) {
- struct vm_area_struct *vma;
- down_read(&current->mm->mmap_sem);
-
- vma = find_vma(current->mm, hva);
- if (vma && hva >= vma->vm_start &&
- (vma->vm_flags & VM_PFNMAP)) {
- /*
- * This VMA is a physically contiguous region (e.g.
- * /dev/mem) that bypasses normal Linux page
- * management. Find the overlap between the
- * vma and the memslot.
- */
-
- unsigned long start, end;
- unsigned long slot_start, slot_end;
-
- pfnmap = 1;
-
- start = vma->vm_pgoff;
- end = start +
- ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT);
-
- pfn = start + ((hva - vma->vm_start) >> PAGE_SHIFT);
-
- slot_start = pfn - (gfn - slot->base_gfn);
- slot_end = slot_start + slot->npages;
-
- if (start < slot_start)
- start = slot_start;
- if (end > slot_end)
- end = slot_end;
-
- tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >>
- MAS1_TSIZE_SHIFT;
-
- /*
- * e500 doesn't implement the lowest tsize bit,
- * or 1K pages.
- */
- tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1);
-
- /*
- * Now find the largest tsize (up to what the guest
- * requested) that will cover gfn, stay within the
- * range, and for which gfn and pfn are mutually
- * aligned.
- */
-
- for (; tsize > BOOK3E_PAGESZ_4K; tsize -= 2) {
- unsigned long gfn_start, gfn_end, tsize_pages;
- tsize_pages = 1 << (tsize - 2);
-
- gfn_start = gfn & ~(tsize_pages - 1);
- gfn_end = gfn_start + tsize_pages;
-
- if (gfn_start + pfn - gfn < start)
- continue;
- if (gfn_end + pfn - gfn > end)
- continue;
- if ((gfn & (tsize_pages - 1)) !=
- (pfn & (tsize_pages - 1)))
- continue;
-
- gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1);
- pfn &= ~(tsize_pages - 1);
- break;
- }
- } else if (vma && hva >= vma->vm_start &&
- (vma->vm_flags & VM_HUGETLB)) {
- unsigned long psize = vma_kernel_pagesize(vma);
-
- tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >>
- MAS1_TSIZE_SHIFT;
-
- /*
- * Take the largest page size that satisfies both host
- * and guest mapping
- */
- tsize = min(__ilog2(psize) - 10, tsize);
-
- /*
- * e500 doesn't implement the lowest tsize bit,
- * or 1K pages.
- */
- tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1);
- }
-
- up_read(&current->mm->mmap_sem);
- }
-
- if (likely(!pfnmap)) {
- unsigned long tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT);
- pfn = gfn_to_pfn_memslot(slot, gfn);
- if (is_error_noslot_pfn(pfn)) {
- printk(KERN_ERR "Couldn't get real page for gfn %lx!\n",
- (long)gfn);
- return;
- }
-
- /* Align guest and physical address to page map boundaries */
- pfn &= ~(tsize_pages - 1);
- gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1);
- }
-
- /* Drop old ref and setup new one. */
- kvmppc_e500_ref_release(ref);
- kvmppc_e500_ref_setup(ref, gtlbe, pfn);
-
- kvmppc_e500_setup_stlbe(&vcpu_e500->vcpu, gtlbe, tsize,
- ref, gvaddr, stlbe);
-
- /* Clear i-cache for new pages */
- kvmppc_mmu_flush_icache(pfn);
-
- /* Drop refcount on page, so that mmu notifiers can clear it */
- kvm_release_pfn_clean(pfn);
-}
-
-/* XXX only map the one-one case, for now use TLB0 */
-static void kvmppc_e500_tlb0_map(struct kvmppc_vcpu_e500 *vcpu_e500,
- int esel,
- struct kvm_book3e_206_tlb_entry *stlbe)
-{
- struct kvm_book3e_206_tlb_entry *gtlbe;
- struct tlbe_ref *ref;
-
- gtlbe = get_entry(vcpu_e500, 0, esel);
- ref = &vcpu_e500->gtlb_priv[0][esel].ref;
-
- kvmppc_e500_shadow_map(vcpu_e500, get_tlb_eaddr(gtlbe),
- get_tlb_raddr(gtlbe) >> PAGE_SHIFT,
- gtlbe, 0, stlbe, ref);
-}
-
-/* Caller must ensure that the specified guest TLB entry is safe to insert into
- * the shadow TLB. */
-/* XXX for both one-one and one-to-many , for now use TLB1 */
-static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500,
- u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe,
- struct kvm_book3e_206_tlb_entry *stlbe, int esel)
-{
- struct tlbe_ref *ref;
- unsigned int victim;
-
- victim = vcpu_e500->host_tlb1_nv++;
-
- if (unlikely(vcpu_e500->host_tlb1_nv >= tlb1_max_shadow_size()))
- vcpu_e500->host_tlb1_nv = 0;
-
- ref = &vcpu_e500->tlb_refs[1][victim];
- kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, stlbe, ref);
-
- vcpu_e500->g2h_tlb1_map[esel] |= (u64)1 << victim;
- vcpu_e500->gtlb_priv[1][esel].ref.flags |= E500_TLB_BITMAP;
- if (vcpu_e500->h2g_tlb1_rmap[victim]) {
- unsigned int idx = vcpu_e500->h2g_tlb1_rmap[victim];
- vcpu_e500->g2h_tlb1_map[idx] &= ~(1ULL << victim);
- }
- vcpu_e500->h2g_tlb1_rmap[victim] = esel;
-
- return victim;
-}
-
-static void kvmppc_recalc_tlb1map_range(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- int size = vcpu_e500->gtlb_params[1].entries;
- unsigned int offset;
- gva_t eaddr;
- int i;
-
- vcpu_e500->tlb1_min_eaddr = ~0UL;
- vcpu_e500->tlb1_max_eaddr = 0;
- offset = vcpu_e500->gtlb_offset[1];
-
- for (i = 0; i < size; i++) {
- struct kvm_book3e_206_tlb_entry *tlbe =
- &vcpu_e500->gtlb_arch[offset + i];
-
- if (!get_tlb_v(tlbe))
- continue;
-
- eaddr = get_tlb_eaddr(tlbe);
- vcpu_e500->tlb1_min_eaddr =
- min(vcpu_e500->tlb1_min_eaddr, eaddr);
-
- eaddr = get_tlb_end(tlbe);
- vcpu_e500->tlb1_max_eaddr =
- max(vcpu_e500->tlb1_max_eaddr, eaddr);
- }
-}
-
-static int kvmppc_need_recalc_tlb1map_range(struct kvmppc_vcpu_e500 *vcpu_e500,
- struct kvm_book3e_206_tlb_entry *gtlbe)
-{
- unsigned long start, end, size;
-
- size = get_tlb_bytes(gtlbe);
- start = get_tlb_eaddr(gtlbe) & ~(size - 1);
- end = start + size - 1;
-
- return vcpu_e500->tlb1_min_eaddr == start ||
- vcpu_e500->tlb1_max_eaddr == end;
-}
-
-/* This function is supposed to be called for a adding a new valid tlb entry */
-static void kvmppc_set_tlb1map_range(struct kvm_vcpu *vcpu,
- struct kvm_book3e_206_tlb_entry *gtlbe)
-{
- unsigned long start, end, size;
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
-
- if (!get_tlb_v(gtlbe))
- return;
-
- size = get_tlb_bytes(gtlbe);
- start = get_tlb_eaddr(gtlbe) & ~(size - 1);
- end = start + size - 1;
-
- vcpu_e500->tlb1_min_eaddr = min(vcpu_e500->tlb1_min_eaddr, start);
- vcpu_e500->tlb1_max_eaddr = max(vcpu_e500->tlb1_max_eaddr, end);
-}
-
-static inline int kvmppc_e500_gtlbe_invalidate(
- struct kvmppc_vcpu_e500 *vcpu_e500,
- int tlbsel, int esel)
-{
- struct kvm_book3e_206_tlb_entry *gtlbe =
- get_entry(vcpu_e500, tlbsel, esel);
-
- if (unlikely(get_tlb_iprot(gtlbe)))
- return -1;
-
- if (tlbsel == 1 && kvmppc_need_recalc_tlb1map_range(vcpu_e500, gtlbe))
- kvmppc_recalc_tlb1map_range(vcpu_e500);
-
- gtlbe->mas1 = 0;
-
- return 0;
-}
-
-int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value)
-{
- int esel;
-
- if (value & MMUCSR0_TLB0FI)
- for (esel = 0; esel < vcpu_e500->gtlb_params[0].entries; esel++)
- kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel);
- if (value & MMUCSR0_TLB1FI)
- for (esel = 0; esel < vcpu_e500->gtlb_params[1].entries; esel++)
- kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel);
-
- /* Invalidate all vcpu id mappings */
- kvmppc_e500_tlbil_all(vcpu_e500);
-
- return EMULATE_DONE;
-}
-
-int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, gva_t ea)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- unsigned int ia;
- int esel, tlbsel;
-
- ia = (ea >> 2) & 0x1;
-
- /* since we only have two TLBs, only lower bit is used. */
- tlbsel = (ea >> 3) & 0x1;
-
- if (ia) {
- /* invalidate all entries */
- for (esel = 0; esel < vcpu_e500->gtlb_params[tlbsel].entries;
- esel++)
- kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
- } else {
- ea &= 0xfffff000;
- esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel,
- get_cur_pid(vcpu), -1);
- if (esel >= 0)
- kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
- }
-
- /* Invalidate all vcpu id mappings */
- kvmppc_e500_tlbil_all(vcpu_e500);
-
- return EMULATE_DONE;
-}
-
-static void tlbilx_all(struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel,
- int pid, int type)
-{
- struct kvm_book3e_206_tlb_entry *tlbe;
- int tid, esel;
-
- /* invalidate all entries */
- for (esel = 0; esel < vcpu_e500->gtlb_params[tlbsel].entries; esel++) {
- tlbe = get_entry(vcpu_e500, tlbsel, esel);
- tid = get_tlb_tid(tlbe);
- if (type == 0 || tid == pid) {
- inval_gtlbe_on_host(vcpu_e500, tlbsel, esel);
- kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
- }
- }
-}
-
-static void tlbilx_one(struct kvmppc_vcpu_e500 *vcpu_e500, int pid,
- gva_t ea)
-{
- int tlbsel, esel;
-
- for (tlbsel = 0; tlbsel < 2; tlbsel++) {
- esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, -1);
- if (esel >= 0) {
- inval_gtlbe_on_host(vcpu_e500, tlbsel, esel);
- kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
- break;
- }
- }
-}
-
-int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int type, gva_t ea)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- int pid = get_cur_spid(vcpu);
-
- if (type == 0 || type == 1) {
- tlbilx_all(vcpu_e500, 0, pid, type);
- tlbilx_all(vcpu_e500, 1, pid, type);
- } else if (type == 3) {
- tlbilx_one(vcpu_e500, pid, ea);
- }
-
- return EMULATE_DONE;
-}
-
-int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- int tlbsel, esel;
- struct kvm_book3e_206_tlb_entry *gtlbe;
-
- tlbsel = get_tlb_tlbsel(vcpu);
- esel = get_tlb_esel(vcpu, tlbsel);
-
- gtlbe = get_entry(vcpu_e500, tlbsel, esel);
- vcpu->arch.shared->mas0 &= ~MAS0_NV(~0);
- vcpu->arch.shared->mas0 |= MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]);
- vcpu->arch.shared->mas1 = gtlbe->mas1;
- vcpu->arch.shared->mas2 = gtlbe->mas2;
- vcpu->arch.shared->mas7_3 = gtlbe->mas7_3;
-
- return EMULATE_DONE;
-}
-
-int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, gva_t ea)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- int as = !!get_cur_sas(vcpu);
- unsigned int pid = get_cur_spid(vcpu);
- int esel, tlbsel;
- struct kvm_book3e_206_tlb_entry *gtlbe = NULL;
-
- for (tlbsel = 0; tlbsel < 2; tlbsel++) {
- esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, as);
- if (esel >= 0) {
- gtlbe = get_entry(vcpu_e500, tlbsel, esel);
- break;
- }
- }
-
- if (gtlbe) {
- esel &= vcpu_e500->gtlb_params[tlbsel].ways - 1;
-
- vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel)
- | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]);
- vcpu->arch.shared->mas1 = gtlbe->mas1;
- vcpu->arch.shared->mas2 = gtlbe->mas2;
- vcpu->arch.shared->mas7_3 = gtlbe->mas7_3;
- } else {
- int victim;
-
- /* since we only have two TLBs, only lower bit is used. */
- tlbsel = vcpu->arch.shared->mas4 >> 28 & 0x1;
- victim = (tlbsel == 0) ? gtlb0_get_next_victim(vcpu_e500) : 0;
-
- vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel)
- | MAS0_ESEL(victim)
- | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]);
- vcpu->arch.shared->mas1 =
- (vcpu->arch.shared->mas6 & MAS6_SPID0)
- | (vcpu->arch.shared->mas6 & (MAS6_SAS ? MAS1_TS : 0))
- | (vcpu->arch.shared->mas4 & MAS4_TSIZED(~0));
- vcpu->arch.shared->mas2 &= MAS2_EPN;
- vcpu->arch.shared->mas2 |= vcpu->arch.shared->mas4 &
- MAS2_ATTRIB_MASK;
- vcpu->arch.shared->mas7_3 &= MAS3_U0 | MAS3_U1 |
- MAS3_U2 | MAS3_U3;
- }
-
- kvmppc_set_exit_type(vcpu, EMULATED_TLBSX_EXITS);
- return EMULATE_DONE;
-}
-
-/* sesel is for tlb1 only */
-static void write_stlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
- struct kvm_book3e_206_tlb_entry *gtlbe,
- struct kvm_book3e_206_tlb_entry *stlbe,
- int stlbsel, int sesel)
-{
- int stid;
-
- preempt_disable();
- stid = kvmppc_e500_get_tlb_stid(&vcpu_e500->vcpu, gtlbe);
-
- stlbe->mas1 |= MAS1_TID(stid);
- write_host_tlbe(vcpu_e500, stlbsel, sesel, stlbe);
- preempt_enable();
-}
-
-int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- struct kvm_book3e_206_tlb_entry *gtlbe, stlbe;
- int tlbsel, esel, stlbsel, sesel;
- int recal = 0;
-
- tlbsel = get_tlb_tlbsel(vcpu);
- esel = get_tlb_esel(vcpu, tlbsel);
-
- gtlbe = get_entry(vcpu_e500, tlbsel, esel);
-
- if (get_tlb_v(gtlbe)) {
- inval_gtlbe_on_host(vcpu_e500, tlbsel, esel);
- if ((tlbsel == 1) &&
- kvmppc_need_recalc_tlb1map_range(vcpu_e500, gtlbe))
- recal = 1;
- }
-
- gtlbe->mas1 = vcpu->arch.shared->mas1;
- gtlbe->mas2 = vcpu->arch.shared->mas2;
- if (!(vcpu->arch.shared->msr & MSR_CM))
- gtlbe->mas2 &= 0xffffffffUL;
- gtlbe->mas7_3 = vcpu->arch.shared->mas7_3;
-
- trace_kvm_booke206_gtlb_write(vcpu->arch.shared->mas0, gtlbe->mas1,
- gtlbe->mas2, gtlbe->mas7_3);
-
- if (tlbsel == 1) {
- /*
- * If a valid tlb1 entry is overwritten then recalculate the
- * min/max TLB1 map address range otherwise no need to look
- * in tlb1 array.
- */
- if (recal)
- kvmppc_recalc_tlb1map_range(vcpu_e500);
- else
- kvmppc_set_tlb1map_range(vcpu, gtlbe);
- }
-
- /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */
- if (tlbe_is_host_safe(vcpu, gtlbe)) {
- u64 eaddr;
- u64 raddr;
-
- switch (tlbsel) {
- case 0:
- /* TLB0 */
- gtlbe->mas1 &= ~MAS1_TSIZE(~0);
- gtlbe->mas1 |= MAS1_TSIZE(BOOK3E_PAGESZ_4K);
-
- stlbsel = 0;
- kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe);
- sesel = 0; /* unused */
-
- break;
-
- case 1:
- /* TLB1 */
- eaddr = get_tlb_eaddr(gtlbe);
- raddr = get_tlb_raddr(gtlbe);
-
- /* Create a 4KB mapping on the host.
- * If the guest wanted a large page,
- * only the first 4KB is mapped here and the rest
- * are mapped on the fly. */
- stlbsel = 1;
- sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr,
- raddr >> PAGE_SHIFT, gtlbe, &stlbe, esel);
- break;
-
- default:
- BUG();
- }
-
- write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel);
- }
-
- kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS);
- return EMULATE_DONE;
-}
-
-static int kvmppc_e500_tlb_search(struct kvm_vcpu *vcpu,
- gva_t eaddr, unsigned int pid, int as)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- int esel, tlbsel;
-
- for (tlbsel = 0; tlbsel < 2; tlbsel++) {
- esel = kvmppc_e500_tlb_index(vcpu_e500, eaddr, tlbsel, pid, as);
- if (esel >= 0)
- return index_of(tlbsel, esel);
- }
-
- return -1;
-}
-
-/* 'linear_address' is actually an encoding of AS|PID|EADDR . */
-int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
- struct kvm_translation *tr)
-{
- int index;
- gva_t eaddr;
- u8 pid;
- u8 as;
-
- eaddr = tr->linear_address;
- pid = (tr->linear_address >> 32) & 0xff;
- as = (tr->linear_address >> 40) & 0x1;
-
- index = kvmppc_e500_tlb_search(vcpu, eaddr, pid, as);
- if (index < 0) {
- tr->valid = 0;
- return 0;
- }
-
- tr->physical_address = kvmppc_mmu_xlate(vcpu, index, eaddr);
- /* XXX what does "writeable" and "usermode" even mean? */
- tr->valid = 1;
-
- return 0;
-}
-
-
-int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr)
-{
- unsigned int as = !!(vcpu->arch.shared->msr & MSR_IS);
-
- return kvmppc_e500_tlb_search(vcpu, eaddr, get_cur_pid(vcpu), as);
-}
-
-int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr)
-{
- unsigned int as = !!(vcpu->arch.shared->msr & MSR_DS);
-
- return kvmppc_e500_tlb_search(vcpu, eaddr, get_cur_pid(vcpu), as);
-}
-
-void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu)
-{
- unsigned int as = !!(vcpu->arch.shared->msr & MSR_IS);
-
- kvmppc_e500_deliver_tlb_miss(vcpu, vcpu->arch.pc, as);
-}
-
-void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu)
-{
- unsigned int as = !!(vcpu->arch.shared->msr & MSR_DS);
-
- kvmppc_e500_deliver_tlb_miss(vcpu, vcpu->arch.fault_dear, as);
-}
-
-gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int index,
- gva_t eaddr)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- struct kvm_book3e_206_tlb_entry *gtlbe;
- u64 pgmask;
-
- gtlbe = get_entry(vcpu_e500, tlbsel_of(index), esel_of(index));
- pgmask = get_tlb_bytes(gtlbe) - 1;
-
- return get_tlb_raddr(gtlbe) | (eaddr & pgmask);
-}
-
-void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
-{
-}
-
-void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr,
- unsigned int index)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- struct tlbe_priv *priv;
- struct kvm_book3e_206_tlb_entry *gtlbe, stlbe;
- int tlbsel = tlbsel_of(index);
- int esel = esel_of(index);
- int stlbsel, sesel;
-
- gtlbe = get_entry(vcpu_e500, tlbsel, esel);
-
- switch (tlbsel) {
- case 0:
- stlbsel = 0;
- sesel = 0; /* unused */
- priv = &vcpu_e500->gtlb_priv[tlbsel][esel];
-
- /* Only triggers after clear_tlb_refs */
- if (unlikely(!(priv->ref.flags & E500_TLB_VALID)))
- kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe);
- else
- kvmppc_e500_setup_stlbe(vcpu, gtlbe, BOOK3E_PAGESZ_4K,
- &priv->ref, eaddr, &stlbe);
- break;
-
- case 1: {
- gfn_t gfn = gpaddr >> PAGE_SHIFT;
-
- stlbsel = 1;
- sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn,
- gtlbe, &stlbe, esel);
- break;
- }
-
- default:
- BUG();
- break;
- }
-
- write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel);
-}
-
-/************* MMU Notifiers *************/
-
-int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
-{
- trace_kvm_unmap_hva(hva);
-
- /*
- * Flush all shadow tlb entries everywhere. This is slow, but
- * we are 100% sure that we catch the to be unmapped page
- */
- kvm_flush_remote_tlbs(kvm);
-
- return 0;
-}
-
-int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
-{
- /* kvm_unmap_hva flushes everything anyways */
- kvm_unmap_hva(kvm, start);
-
- return 0;
-}
-
-int kvm_age_hva(struct kvm *kvm, unsigned long hva)
-{
- /* XXX could be more clever ;) */
- return 0;
-}
-
-int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
-{
- /* XXX could be more clever ;) */
- return 0;
-}
-
-void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
-{
- /* The page will get remapped properly on its next fault */
- kvm_unmap_hva(kvm, hva);
-}
-
-/*****************************************/
-
-static void free_gtlb(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- int i;
-
- clear_tlb1_bitmap(vcpu_e500);
- kfree(vcpu_e500->g2h_tlb1_map);
-
- clear_tlb_refs(vcpu_e500);
- kfree(vcpu_e500->gtlb_priv[0]);
- kfree(vcpu_e500->gtlb_priv[1]);
-
- if (vcpu_e500->shared_tlb_pages) {
- vfree((void *)(round_down((uintptr_t)vcpu_e500->gtlb_arch,
- PAGE_SIZE)));
-
- for (i = 0; i < vcpu_e500->num_shared_tlb_pages; i++) {
- set_page_dirty_lock(vcpu_e500->shared_tlb_pages[i]);
- put_page(vcpu_e500->shared_tlb_pages[i]);
- }
-
- vcpu_e500->num_shared_tlb_pages = 0;
-
- kfree(vcpu_e500->shared_tlb_pages);
- vcpu_e500->shared_tlb_pages = NULL;
- } else {
- kfree(vcpu_e500->gtlb_arch);
- }
-
- vcpu_e500->gtlb_arch = NULL;
-}
-
-void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
-{
- sregs->u.e.mas0 = vcpu->arch.shared->mas0;
- sregs->u.e.mas1 = vcpu->arch.shared->mas1;
- sregs->u.e.mas2 = vcpu->arch.shared->mas2;
- sregs->u.e.mas7_3 = vcpu->arch.shared->mas7_3;
- sregs->u.e.mas4 = vcpu->arch.shared->mas4;
- sregs->u.e.mas6 = vcpu->arch.shared->mas6;
-
- sregs->u.e.mmucfg = vcpu->arch.mmucfg;
- sregs->u.e.tlbcfg[0] = vcpu->arch.tlbcfg[0];
- sregs->u.e.tlbcfg[1] = vcpu->arch.tlbcfg[1];
- sregs->u.e.tlbcfg[2] = 0;
- sregs->u.e.tlbcfg[3] = 0;
-}
-
-int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
-{
- if (sregs->u.e.features & KVM_SREGS_E_ARCH206_MMU) {
- vcpu->arch.shared->mas0 = sregs->u.e.mas0;
- vcpu->arch.shared->mas1 = sregs->u.e.mas1;
- vcpu->arch.shared->mas2 = sregs->u.e.mas2;
- vcpu->arch.shared->mas7_3 = sregs->u.e.mas7_3;
- vcpu->arch.shared->mas4 = sregs->u.e.mas4;
- vcpu->arch.shared->mas6 = sregs->u.e.mas6;
- }
-
- return 0;
-}
-
-int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
- struct kvm_config_tlb *cfg)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- struct kvm_book3e_206_tlb_params params;
- char *virt;
- struct page **pages;
- struct tlbe_priv *privs[2] = {};
- u64 *g2h_bitmap = NULL;
- size_t array_len;
- u32 sets;
- int num_pages, ret, i;
-
- if (cfg->mmu_type != KVM_MMU_FSL_BOOKE_NOHV)
- return -EINVAL;
-
- if (copy_from_user(&params, (void __user *)(uintptr_t)cfg->params,
- sizeof(params)))
- return -EFAULT;
-
- if (params.tlb_sizes[1] > 64)
- return -EINVAL;
- if (params.tlb_ways[1] != params.tlb_sizes[1])
- return -EINVAL;
- if (params.tlb_sizes[2] != 0 || params.tlb_sizes[3] != 0)
- return -EINVAL;
- if (params.tlb_ways[2] != 0 || params.tlb_ways[3] != 0)
- return -EINVAL;
-
- if (!is_power_of_2(params.tlb_ways[0]))
- return -EINVAL;
-
- sets = params.tlb_sizes[0] >> ilog2(params.tlb_ways[0]);
- if (!is_power_of_2(sets))
- return -EINVAL;
-
- array_len = params.tlb_sizes[0] + params.tlb_sizes[1];
- array_len *= sizeof(struct kvm_book3e_206_tlb_entry);
-
- if (cfg->array_len < array_len)
- return -EINVAL;
-
- num_pages = DIV_ROUND_UP(cfg->array + array_len - 1, PAGE_SIZE) -
- cfg->array / PAGE_SIZE;
- pages = kmalloc(sizeof(struct page *) * num_pages, GFP_KERNEL);
- if (!pages)
- return -ENOMEM;
-
- ret = get_user_pages_fast(cfg->array, num_pages, 1, pages);
- if (ret < 0)
- goto err_pages;
-
- if (ret != num_pages) {
- num_pages = ret;
- ret = -EFAULT;
- goto err_put_page;
- }
-
- virt = vmap(pages, num_pages, VM_MAP, PAGE_KERNEL);
- if (!virt) {
- ret = -ENOMEM;
- goto err_put_page;
- }
-
- privs[0] = kzalloc(sizeof(struct tlbe_priv) * params.tlb_sizes[0],
- GFP_KERNEL);
- privs[1] = kzalloc(sizeof(struct tlbe_priv) * params.tlb_sizes[1],
- GFP_KERNEL);
-
- if (!privs[0] || !privs[1]) {
- ret = -ENOMEM;
- goto err_privs;
- }
-
- g2h_bitmap = kzalloc(sizeof(u64) * params.tlb_sizes[1],
- GFP_KERNEL);
- if (!g2h_bitmap) {
- ret = -ENOMEM;
- goto err_privs;
- }
-
- free_gtlb(vcpu_e500);
-
- vcpu_e500->gtlb_priv[0] = privs[0];
- vcpu_e500->gtlb_priv[1] = privs[1];
- vcpu_e500->g2h_tlb1_map = g2h_bitmap;
-
- vcpu_e500->gtlb_arch = (struct kvm_book3e_206_tlb_entry *)
- (virt + (cfg->array & (PAGE_SIZE - 1)));
-
- vcpu_e500->gtlb_params[0].entries = params.tlb_sizes[0];
- vcpu_e500->gtlb_params[1].entries = params.tlb_sizes[1];
-
- vcpu_e500->gtlb_offset[0] = 0;
- vcpu_e500->gtlb_offset[1] = params.tlb_sizes[0];
-
- vcpu->arch.mmucfg = mfspr(SPRN_MMUCFG) & ~MMUCFG_LPIDSIZE;
-
- vcpu->arch.tlbcfg[0] &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
- if (params.tlb_sizes[0] <= 2048)
- vcpu->arch.tlbcfg[0] |= params.tlb_sizes[0];
- vcpu->arch.tlbcfg[0] |= params.tlb_ways[0] << TLBnCFG_ASSOC_SHIFT;
-
- vcpu->arch.tlbcfg[1] &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
- vcpu->arch.tlbcfg[1] |= params.tlb_sizes[1];
- vcpu->arch.tlbcfg[1] |= params.tlb_ways[1] << TLBnCFG_ASSOC_SHIFT;
-
- vcpu_e500->shared_tlb_pages = pages;
- vcpu_e500->num_shared_tlb_pages = num_pages;
-
- vcpu_e500->gtlb_params[0].ways = params.tlb_ways[0];
- vcpu_e500->gtlb_params[0].sets = sets;
-
- vcpu_e500->gtlb_params[1].ways = params.tlb_sizes[1];
- vcpu_e500->gtlb_params[1].sets = 1;
-
- kvmppc_recalc_tlb1map_range(vcpu_e500);
- return 0;
-
-err_privs:
- kfree(privs[0]);
- kfree(privs[1]);
-
-err_put_page:
- for (i = 0; i < num_pages; i++)
- put_page(pages[i]);
-
-err_pages:
- kfree(pages);
- return ret;
-}
-
-int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
- struct kvm_dirty_tlb *dirty)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- kvmppc_recalc_tlb1map_range(vcpu_e500);
- clear_tlb_refs(vcpu_e500);
- return 0;
-}
-
-int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- struct kvm_vcpu *vcpu = &vcpu_e500->vcpu;
- int entry_size = sizeof(struct kvm_book3e_206_tlb_entry);
- int entries = KVM_E500_TLB0_SIZE + KVM_E500_TLB1_SIZE;
-
- host_tlb_params[0].entries = mfspr(SPRN_TLB0CFG) & TLBnCFG_N_ENTRY;
- host_tlb_params[1].entries = mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY;
-
- /*
- * This should never happen on real e500 hardware, but is
- * architecturally possible -- e.g. in some weird nested
- * virtualization case.
- */
- if (host_tlb_params[0].entries == 0 ||
- host_tlb_params[1].entries == 0) {
- pr_err("%s: need to know host tlb size\n", __func__);
- return -ENODEV;
- }
-
- host_tlb_params[0].ways = (mfspr(SPRN_TLB0CFG) & TLBnCFG_ASSOC) >>
- TLBnCFG_ASSOC_SHIFT;
- host_tlb_params[1].ways = host_tlb_params[1].entries;
-
- if (!is_power_of_2(host_tlb_params[0].entries) ||
- !is_power_of_2(host_tlb_params[0].ways) ||
- host_tlb_params[0].entries < host_tlb_params[0].ways ||
- host_tlb_params[0].ways == 0) {
- pr_err("%s: bad tlb0 host config: %u entries %u ways\n",
- __func__, host_tlb_params[0].entries,
- host_tlb_params[0].ways);
- return -ENODEV;
- }
-
- host_tlb_params[0].sets =
- host_tlb_params[0].entries / host_tlb_params[0].ways;
- host_tlb_params[1].sets = 1;
-
- vcpu_e500->gtlb_params[0].entries = KVM_E500_TLB0_SIZE;
- vcpu_e500->gtlb_params[1].entries = KVM_E500_TLB1_SIZE;
-
- vcpu_e500->gtlb_params[0].ways = KVM_E500_TLB0_WAY_NUM;
- vcpu_e500->gtlb_params[0].sets =
- KVM_E500_TLB0_SIZE / KVM_E500_TLB0_WAY_NUM;
-
- vcpu_e500->gtlb_params[1].ways = KVM_E500_TLB1_SIZE;
- vcpu_e500->gtlb_params[1].sets = 1;
-
- vcpu_e500->gtlb_arch = kmalloc(entries * entry_size, GFP_KERNEL);
- if (!vcpu_e500->gtlb_arch)
- return -ENOMEM;
-
- vcpu_e500->gtlb_offset[0] = 0;
- vcpu_e500->gtlb_offset[1] = KVM_E500_TLB0_SIZE;
-
- vcpu_e500->tlb_refs[0] =
- kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[0].entries,
- GFP_KERNEL);
- if (!vcpu_e500->tlb_refs[0])
- goto err;
-
- vcpu_e500->tlb_refs[1] =
- kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[1].entries,
- GFP_KERNEL);
- if (!vcpu_e500->tlb_refs[1])
- goto err;
-
- vcpu_e500->gtlb_priv[0] = kzalloc(sizeof(struct tlbe_ref) *
- vcpu_e500->gtlb_params[0].entries,
- GFP_KERNEL);
- if (!vcpu_e500->gtlb_priv[0])
- goto err;
-
- vcpu_e500->gtlb_priv[1] = kzalloc(sizeof(struct tlbe_ref) *
- vcpu_e500->gtlb_params[1].entries,
- GFP_KERNEL);
- if (!vcpu_e500->gtlb_priv[1])
- goto err;
-
- vcpu_e500->g2h_tlb1_map = kzalloc(sizeof(u64) *
- vcpu_e500->gtlb_params[1].entries,
- GFP_KERNEL);
- if (!vcpu_e500->g2h_tlb1_map)
- goto err;
-
- vcpu_e500->h2g_tlb1_rmap = kzalloc(sizeof(unsigned int) *
- host_tlb_params[1].entries,
- GFP_KERNEL);
- if (!vcpu_e500->h2g_tlb1_rmap)
- goto err;
-
- /* Init TLB configuration register */
- vcpu->arch.tlbcfg[0] = mfspr(SPRN_TLB0CFG) &
- ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
- vcpu->arch.tlbcfg[0] |= vcpu_e500->gtlb_params[0].entries;
- vcpu->arch.tlbcfg[0] |=
- vcpu_e500->gtlb_params[0].ways << TLBnCFG_ASSOC_SHIFT;
-
- vcpu->arch.tlbcfg[1] = mfspr(SPRN_TLB1CFG) &
- ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
- vcpu->arch.tlbcfg[1] |= vcpu_e500->gtlb_params[1].entries;
- vcpu->arch.tlbcfg[1] |=
- vcpu_e500->gtlb_params[1].ways << TLBnCFG_ASSOC_SHIFT;
-
- kvmppc_recalc_tlb1map_range(vcpu_e500);
- return 0;
-
-err:
- free_gtlb(vcpu_e500);
- kfree(vcpu_e500->tlb_refs[0]);
- kfree(vcpu_e500->tlb_refs[1]);
- return -1;
-}
-
-void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- free_gtlb(vcpu_e500);
- kfree(vcpu_e500->h2g_tlb1_rmap);
- kfree(vcpu_e500->tlb_refs[0]);
- kfree(vcpu_e500->tlb_refs[1]);
-}