From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- ANDROID_3.4.5/arch/powerpc/kvm/e500_tlb.c | 1392 ----------------------------- 1 file changed, 1392 deletions(-) delete mode 100644 ANDROID_3.4.5/arch/powerpc/kvm/e500_tlb.c (limited to 'ANDROID_3.4.5/arch/powerpc/kvm/e500_tlb.c') diff --git a/ANDROID_3.4.5/arch/powerpc/kvm/e500_tlb.c b/ANDROID_3.4.5/arch/powerpc/kvm/e500_tlb.c deleted file mode 100644 index 6e53e416..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kvm/e500_tlb.c +++ /dev/null @@ -1,1392 +0,0 @@ -/* - * 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.c, - * by Hollis Blanchard . - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "../mm/mmu_decl.h" -#include "e500_tlb.h" -#include "trace.h" -#include "timing.h" - -#define to_htlb1_esel(esel) (host_tlb_params[1].entries - (esel) - 1) - -struct id { - unsigned long val; - struct id **pentry; -}; - -#define NUM_TIDS 256 - -/* - * This table provide mappings from: - * (guestAS,guestTID,guestPR) --> ID of physical cpu - * guestAS [0..1] - * guestTID [0..255] - * guestPR [0..1] - * ID [1..255] - * Each vcpu keeps one vcpu_id_table. - */ -struct vcpu_id_table { - struct id id[2][NUM_TIDS][2]; -}; - -/* - * This table provide reversed mappings of vcpu_id_table: - * ID --> address of vcpu_id_table item. - * Each physical core has one pcpu_id_table. - */ -struct pcpu_id_table { - struct id *entry[NUM_TIDS]; -}; - -static DEFINE_PER_CPU(struct pcpu_id_table, pcpu_sids); - -/* This variable keeps last used shadow ID on local core. - * The valid range of shadow ID is [1..255] */ -static DEFINE_PER_CPU(unsigned long, pcpu_last_used_sid); - -static struct kvmppc_e500_tlb_params host_tlb_params[E500_TLB_NUM]; - -static struct kvm_book3e_206_tlb_entry *get_entry( - struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int entry) -{ - int offset = vcpu_e500->gtlb_offset[tlbsel]; - return &vcpu_e500->gtlb_arch[offset + entry]; -} - -/* - * Allocate a free shadow id and setup a valid sid mapping in given entry. - * A mapping is only valid when vcpu_id_table and pcpu_id_table are match. - * - * The caller must have preemption disabled, and keep it that way until - * it has finished with the returned shadow id (either written into the - * TLB or arch.shadow_pid, or discarded). - */ -static inline int local_sid_setup_one(struct id *entry) -{ - unsigned long sid; - int ret = -1; - - sid = ++(__get_cpu_var(pcpu_last_used_sid)); - if (sid < NUM_TIDS) { - __get_cpu_var(pcpu_sids).entry[sid] = entry; - entry->val = sid; - entry->pentry = &__get_cpu_var(pcpu_sids).entry[sid]; - ret = sid; - } - - /* - * If sid == NUM_TIDS, we've run out of sids. We return -1, and - * the caller will invalidate everything and start over. - * - * sid > NUM_TIDS indicates a race, which we disable preemption to - * avoid. - */ - WARN_ON(sid > NUM_TIDS); - - return ret; -} - -/* - * Check if given entry contain a valid shadow id mapping. - * An ID mapping is considered valid only if - * both vcpu and pcpu know this mapping. - * - * The caller must have preemption disabled, and keep it that way until - * it has finished with the returned shadow id (either written into the - * TLB or arch.shadow_pid, or discarded). - */ -static inline int local_sid_lookup(struct id *entry) -{ - if (entry && entry->val != 0 && - __get_cpu_var(pcpu_sids).entry[entry->val] == entry && - entry->pentry == &__get_cpu_var(pcpu_sids).entry[entry->val]) - return entry->val; - return -1; -} - -/* Invalidate all id mappings on local core -- call with preempt disabled */ -static inline void local_sid_destroy_all(void) -{ - __get_cpu_var(pcpu_last_used_sid) = 0; - memset(&__get_cpu_var(pcpu_sids), 0, sizeof(__get_cpu_var(pcpu_sids))); -} - -static void *kvmppc_e500_id_table_alloc(struct kvmppc_vcpu_e500 *vcpu_e500) -{ - vcpu_e500->idt = kzalloc(sizeof(struct vcpu_id_table), GFP_KERNEL); - return vcpu_e500->idt; -} - -static void kvmppc_e500_id_table_free(struct kvmppc_vcpu_e500 *vcpu_e500) -{ - kfree(vcpu_e500->idt); -} - -/* Invalidate all mappings on vcpu */ -static void kvmppc_e500_id_table_reset_all(struct kvmppc_vcpu_e500 *vcpu_e500) -{ - memset(vcpu_e500->idt, 0, sizeof(struct vcpu_id_table)); - - /* Update shadow pid when mappings are changed */ - kvmppc_e500_recalc_shadow_pid(vcpu_e500); -} - -/* Invalidate one ID mapping on vcpu */ -static inline void kvmppc_e500_id_table_reset_one( - struct kvmppc_vcpu_e500 *vcpu_e500, - int as, int pid, int pr) -{ - struct vcpu_id_table *idt = vcpu_e500->idt; - - BUG_ON(as >= 2); - BUG_ON(pid >= NUM_TIDS); - BUG_ON(pr >= 2); - - idt->id[as][pid][pr].val = 0; - idt->id[as][pid][pr].pentry = NULL; - - /* Update shadow pid when mappings are changed */ - kvmppc_e500_recalc_shadow_pid(vcpu_e500); -} - -/* - * Map guest (vcpu,AS,ID,PR) to physical core shadow id. - * This function first lookup if a valid mapping exists, - * if not, then creates a new one. - * - * The caller must have preemption disabled, and keep it that way until - * it has finished with the returned shadow id (either written into the - * TLB or arch.shadow_pid, or discarded). - */ -static unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500, - unsigned int as, unsigned int gid, - unsigned int pr, int avoid_recursion) -{ - struct vcpu_id_table *idt = vcpu_e500->idt; - int sid; - - BUG_ON(as >= 2); - BUG_ON(gid >= NUM_TIDS); - BUG_ON(pr >= 2); - - sid = local_sid_lookup(&idt->id[as][gid][pr]); - - while (sid <= 0) { - /* No mapping yet */ - sid = local_sid_setup_one(&idt->id[as][gid][pr]); - if (sid <= 0) { - _tlbil_all(); - local_sid_destroy_all(); - } - - /* Update shadow pid when mappings are changed */ - if (!avoid_recursion) - kvmppc_e500_recalc_shadow_pid(vcpu_e500); - } - - return sid; -} - -/* Map guest pid to shadow. - * We use PID to keep shadow of current guest non-zero PID, - * and use PID1 to keep shadow of guest zero PID. - * So that guest tlbe with TID=0 can be accessed at any time */ -void kvmppc_e500_recalc_shadow_pid(struct kvmppc_vcpu_e500 *vcpu_e500) -{ - preempt_disable(); - vcpu_e500->vcpu.arch.shadow_pid = kvmppc_e500_get_sid(vcpu_e500, - get_cur_as(&vcpu_e500->vcpu), - get_cur_pid(&vcpu_e500->vcpu), - get_cur_pr(&vcpu_e500->vcpu), 1); - vcpu_e500->vcpu.arch.shadow_pid1 = kvmppc_e500_get_sid(vcpu_e500, - get_cur_as(&vcpu_e500->vcpu), 0, - get_cur_pr(&vcpu_e500->vcpu), 1); - preempt_enable(); -} - -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; - - 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; - } - - return mas3 | E500_TLB_SUPER_PERM_MASK; -} - -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)); - asm volatile("isync; tlbwe" : : : "memory"); - 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))); - } -} - -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(); -} - -void kvmppc_e500_tlb_load(struct kvm_vcpu *vcpu, int cpu) -{ - struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); - - /* Shadow PID may be expired on local core */ - kvmppc_e500_recalc_shadow_pid(vcpu_e500); -} - -void kvmppc_e500_tlb_put(struct kvm_vcpu *vcpu) -{ -} - -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); - struct vcpu_id_table *idt = vcpu_e500->idt; - unsigned int pr, tid, ts, pid; - u32 val, eaddr; - unsigned long flags; - - ts = get_tlb_ts(gtlbe); - tid = get_tlb_tid(gtlbe); - - preempt_disable(); - - /* One guest ID may be mapped to two shadow IDs */ - for (pr = 0; pr < 2; pr++) { - /* - * The shadow PID can have a valid mapping on at most one - * host CPU. In the common case, it will be valid on this - * CPU, in which case (for TLB0) we do a local invalidation - * of the specific address. - * - * If the shadow PID is not valid on the current host CPU, or - * if we're invalidating a TLB1 entry, we invalidate the - * entire shadow PID. - */ - if (tlbsel == 1 || - (pid = local_sid_lookup(&idt->id[ts][tid][pr])) <= 0) { - kvmppc_e500_id_table_reset_one(vcpu_e500, ts, tid, pr); - continue; - } - - /* - * The guest is invalidating a TLB0 entry which is in a PID - * that has a valid shadow mapping on this host CPU. We - * search host TLB0 to invalidate it's shadow TLB entry, - * similar to __tlbil_va except that we need to look in AS1. - */ - val = (pid << MAS6_SPID_SHIFT) | MAS6_SAS; - eaddr = get_tlb_eaddr(gtlbe); - - local_irq_save(flags); - - mtspr(SPRN_MAS6, val); - asm volatile("tlbsx 0, %[eaddr]" : : [eaddr] "r" (eaddr)); - val = mfspr(SPRN_MAS1); - if (val & MAS1_VALID) { - mtspr(SPRN_MAS1, val & ~MAS1_VALID); - asm volatile("tlbwe"); - } - - local_irq_restore(flags); - } - - preempt_enable(); -} - -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 { - 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)) - ref->flags |= E500_TLB_DIRTY; -} - -static inline void kvmppc_e500_ref_release(struct tlbe_ref *ref) -{ - if (ref->flags & E500_TLB_VALID) { - if (ref->flags & E500_TLB_DIRTY) - kvm_release_pfn_dirty(ref->pfn); - else - kvm_release_pfn_clean(ref->pfn); - - ref->flags = 0; - } -} - -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_id_table_reset_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); -} - -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, pidsel, 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; - pidsel = (vcpu->arch.shared->mas4 >> 16) & 0xf; - 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(vcpu_e500->pid[pidsel]) - | 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 kvmppc_vcpu_e500 *vcpu_e500, - 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; - - BUG_ON(!(ref->flags & E500_TLB_VALID)); - - /* Force TS=1 IPROT=0 for all guest mappings. */ - stlbe->mas1 = MAS1_TSIZE(tsize) | MAS1_TS | MAS1_VALID; - stlbe->mas2 = (gvaddr & MAS2_EPN) - | e500_shadow_mas2_attrib(gtlbe->mas2, - vcpu_e500->vcpu.arch.shared->msr & MSR_PR); - stlbe->mas7_3 = ((u64)pfn << PAGE_SHIFT) - | e500_shadow_mas3_attrib(gtlbe->mas7_3, - vcpu_e500->vcpu.arch.shared->msr & MSR_PR); -} - -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, 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(¤t->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(¤t->mm->mmap_sem); - } - - if (likely(!pfnmap)) { - unsigned long tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT); - pfn = gfn_to_pfn_memslot(vcpu_e500->vcpu.kvm, slot, gfn); - if (is_error_pfn(pfn)) { - printk(KERN_ERR "Couldn't get real page for gfn %lx!\n", - (long)gfn); - kvm_release_pfn_clean(pfn); - 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, gtlbe, tsize, ref, gvaddr, stlbe); -} - -/* 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) -{ - 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); - - return victim; -} - -void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr) -{ - struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); - - /* Recalc shadow pid since MSR changes */ - kvmppc_e500_recalc_shadow_pid(vcpu_e500); -} - -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; - - 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_id_table_reset_all(vcpu_e500); - - return EMULATE_DONE; -} - -int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb) -{ - struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); - unsigned int ia; - int esel, tlbsel; - gva_t ea; - - ea = ((ra) ? kvmppc_get_gpr(vcpu, ra) : 0) + kvmppc_get_gpr(vcpu, rb); - - 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_id_table_reset_all(vcpu_e500); - - 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, int rb) -{ - 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; - gva_t ea; - - ea = kvmppc_get_gpr(vcpu, rb); - - 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_sid(vcpu_e500, get_tlb_ts(gtlbe), - get_tlb_tid(gtlbe), - get_cur_pr(&vcpu_e500->vcpu), 0); - - 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; - int tlbsel, esel; - - 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); - - gtlbe->mas1 = vcpu->arch.shared->mas1; - gtlbe->mas2 = vcpu->arch.shared->mas2; - gtlbe->mas7_3 = vcpu->arch.shared->mas7_3; - - trace_kvm_booke206_gtlb_write(vcpu->arch.shared->mas0, gtlbe->mas1, - gtlbe->mas2, gtlbe->mas7_3); - - /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */ - if (tlbe_is_host_safe(vcpu, gtlbe)) { - struct kvm_book3e_206_tlb_entry stlbe; - int stlbsel, sesel; - 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); - break; - - default: - BUG(); - } - - write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel); - } - - kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS); - return EMULATE_DONE; -} - -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]; - - kvmppc_e500_setup_stlbe(vcpu_e500, 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); - break; - } - - default: - BUG(); - break; - } - - write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel); -} - -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; -} - -void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid) -{ - struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); - - if (vcpu->arch.pid != pid) { - vcpu_e500->pid[0] = vcpu->arch.pid = pid; - kvmppc_e500_recalc_shadow_pid(vcpu_e500); - } -} - -void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *vcpu_e500) -{ - struct kvm_book3e_206_tlb_entry *tlbe; - - /* Insert large initial mapping for guest. */ - tlbe = get_entry(vcpu_e500, 1, 0); - tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_256M); - tlbe->mas2 = 0; - tlbe->mas7_3 = E500_TLB_SUPER_PERM_MASK; - - /* 4K map for serial output. Used by kernel wrapper. */ - tlbe = get_entry(vcpu_e500, 1, 1); - tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_4K); - tlbe->mas2 = (0xe0004500 & 0xFFFFF000) | MAS2_I | MAS2_G; - tlbe->mas7_3 = (0xe0004500 & 0xFFFFF000) | E500_TLB_SUPER_PERM_MASK; -} - -static void free_gtlb(struct kvmppc_vcpu_e500 *vcpu_e500) -{ - int i; - - 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; - vcpu_e500->shared_tlb_pages = NULL; - } else { - kfree(vcpu_e500->gtlb_arch); - } - - vcpu_e500->gtlb_arch = NULL; -} - -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] = {}; - 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(¶ms, (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) - 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]) - goto err_put_page; - - free_gtlb(vcpu_e500); - - vcpu_e500->gtlb_priv[0] = privs[0]; - vcpu_e500->gtlb_priv[1] = privs[1]; - - 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_e500->tlb0cfg &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); - if (params.tlb_sizes[0] <= 2048) - vcpu_e500->tlb0cfg |= params.tlb_sizes[0]; - vcpu_e500->tlb0cfg |= params.tlb_ways[0] << TLBnCFG_ASSOC_SHIFT; - - vcpu_e500->tlb1cfg &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); - vcpu_e500->tlb1cfg |= params.tlb_sizes[1]; - vcpu_e500->tlb1cfg |= 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; - - return 0; - -err_put_page: - kfree(privs[0]); - kfree(privs[1]); - - 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); - - clear_tlb_refs(vcpu_e500); - return 0; -} - -int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500) -{ - 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; - - if (kvmppc_e500_id_table_alloc(vcpu_e500) == NULL) - goto err; - - /* Init TLB configuration register */ - vcpu_e500->tlb0cfg = mfspr(SPRN_TLB0CFG) & - ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); - vcpu_e500->tlb0cfg |= vcpu_e500->gtlb_params[0].entries; - vcpu_e500->tlb0cfg |= - vcpu_e500->gtlb_params[0].ways << TLBnCFG_ASSOC_SHIFT; - - vcpu_e500->tlb1cfg = mfspr(SPRN_TLB1CFG) & - ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); - vcpu_e500->tlb0cfg |= vcpu_e500->gtlb_params[1].entries; - vcpu_e500->tlb0cfg |= - vcpu_e500->gtlb_params[1].ways << TLBnCFG_ASSOC_SHIFT; - - 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); - kvmppc_e500_id_table_free(vcpu_e500); - - kfree(vcpu_e500->tlb_refs[0]); - kfree(vcpu_e500->tlb_refs[1]); -} -- cgit