502 lines
11 KiB
C
502 lines
11 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright IBM Corp. 2007
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*
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*/
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#ifndef __POWERPC_KVM_HOST_H__
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#define __POWERPC_KVM_HOST_H__
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#include <linux/mutex.h>
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#include <linux/hrtimer.h>
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#include <linux/interrupt.h>
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#include <linux/types.h>
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#include <linux/kvm_types.h>
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#include <linux/threads.h>
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#include <linux/spinlock.h>
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#include <linux/kvm_para.h>
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#include <linux/list.h>
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#include <linux/atomic.h>
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#include <asm/kvm_asm.h>
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#include <asm/processor.h>
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#include <asm/page.h>
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#define KVM_MAX_VCPUS NR_CPUS
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#define KVM_MAX_VCORES NR_CPUS
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#define KVM_MEMORY_SLOTS 32
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/* memory slots that does not exposed to userspace */
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#define KVM_PRIVATE_MEM_SLOTS 4
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#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
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#ifdef CONFIG_KVM_MMIO
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#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
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#endif
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#ifdef CONFIG_KVM_BOOK3S_64_HV
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#include <linux/mmu_notifier.h>
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#define KVM_ARCH_WANT_MMU_NOTIFIER
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struct kvm;
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extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
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extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
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extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
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extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
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#endif
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/* We don't currently support large pages. */
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#define KVM_HPAGE_GFN_SHIFT(x) 0
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#define KVM_NR_PAGE_SIZES 1
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#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
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#define HPTEG_CACHE_NUM (1 << 15)
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#define HPTEG_HASH_BITS_PTE 13
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#define HPTEG_HASH_BITS_PTE_LONG 12
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#define HPTEG_HASH_BITS_VPTE 13
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#define HPTEG_HASH_BITS_VPTE_LONG 5
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#define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
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#define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
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#define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
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#define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
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/* Physical Address Mask - allowed range of real mode RAM access */
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#define KVM_PAM 0x0fffffffffffffffULL
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struct kvm;
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struct kvm_run;
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struct kvm_vcpu;
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struct lppaca;
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struct slb_shadow;
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struct dtl;
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struct kvm_vm_stat {
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u32 remote_tlb_flush;
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};
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struct kvm_vcpu_stat {
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u32 sum_exits;
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u32 mmio_exits;
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u32 dcr_exits;
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u32 signal_exits;
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u32 light_exits;
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/* Account for special types of light exits: */
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u32 itlb_real_miss_exits;
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u32 itlb_virt_miss_exits;
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u32 dtlb_real_miss_exits;
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u32 dtlb_virt_miss_exits;
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u32 syscall_exits;
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u32 isi_exits;
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u32 dsi_exits;
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u32 emulated_inst_exits;
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u32 dec_exits;
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u32 ext_intr_exits;
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u32 halt_wakeup;
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#ifdef CONFIG_PPC_BOOK3S
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u32 pf_storage;
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u32 pf_instruc;
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u32 sp_storage;
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u32 sp_instruc;
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u32 queue_intr;
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u32 ld;
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u32 ld_slow;
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u32 st;
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u32 st_slow;
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#endif
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};
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enum kvm_exit_types {
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MMIO_EXITS,
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DCR_EXITS,
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SIGNAL_EXITS,
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ITLB_REAL_MISS_EXITS,
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ITLB_VIRT_MISS_EXITS,
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DTLB_REAL_MISS_EXITS,
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DTLB_VIRT_MISS_EXITS,
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SYSCALL_EXITS,
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ISI_EXITS,
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DSI_EXITS,
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EMULATED_INST_EXITS,
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EMULATED_MTMSRWE_EXITS,
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EMULATED_WRTEE_EXITS,
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EMULATED_MTSPR_EXITS,
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EMULATED_MFSPR_EXITS,
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EMULATED_MTMSR_EXITS,
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EMULATED_MFMSR_EXITS,
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EMULATED_TLBSX_EXITS,
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EMULATED_TLBWE_EXITS,
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EMULATED_RFI_EXITS,
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DEC_EXITS,
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EXT_INTR_EXITS,
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HALT_WAKEUP,
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USR_PR_INST,
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FP_UNAVAIL,
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DEBUG_EXITS,
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TIMEINGUEST,
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__NUMBER_OF_KVM_EXIT_TYPES
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};
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/* allow access to big endian 32bit upper/lower parts and 64bit var */
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struct kvmppc_exit_timing {
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union {
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u64 tv64;
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struct {
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u32 tbu, tbl;
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} tv32;
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};
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};
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struct kvmppc_pginfo {
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unsigned long pfn;
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atomic_t refcnt;
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};
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struct kvmppc_spapr_tce_table {
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struct list_head list;
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struct kvm *kvm;
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u64 liobn;
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u32 window_size;
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struct page *pages[0];
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};
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struct kvmppc_linear_info {
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void *base_virt;
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unsigned long base_pfn;
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unsigned long npages;
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struct list_head list;
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atomic_t use_count;
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int type;
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};
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/*
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* The reverse mapping array has one entry for each HPTE,
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* which stores the guest's view of the second word of the HPTE
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* (including the guest physical address of the mapping),
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* plus forward and backward pointers in a doubly-linked ring
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* of HPTEs that map the same host page. The pointers in this
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* ring are 32-bit HPTE indexes, to save space.
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*/
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struct revmap_entry {
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unsigned long guest_rpte;
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unsigned int forw, back;
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};
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/*
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* We use the top bit of each memslot->rmap entry as a lock bit,
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* and bit 32 as a present flag. The bottom 32 bits are the
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* index in the guest HPT of a HPTE that points to the page.
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*/
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#define KVMPPC_RMAP_LOCK_BIT 63
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#define KVMPPC_RMAP_RC_SHIFT 32
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#define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
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#define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
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#define KVMPPC_RMAP_PRESENT 0x100000000ul
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#define KVMPPC_RMAP_INDEX 0xfffffffful
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/* Low-order bits in kvm->arch.slot_phys[][] */
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#define KVMPPC_PAGE_ORDER_MASK 0x1f
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#define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
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#define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
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#define KVMPPC_GOT_PAGE 0x80
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struct kvm_arch_memory_slot {
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};
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struct kvm_arch {
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#ifdef CONFIG_KVM_BOOK3S_64_HV
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unsigned long hpt_virt;
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struct revmap_entry *revmap;
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unsigned int lpid;
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unsigned int host_lpid;
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unsigned long host_lpcr;
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unsigned long sdr1;
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unsigned long host_sdr1;
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int tlbie_lock;
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unsigned long lpcr;
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unsigned long rmor;
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struct kvmppc_linear_info *rma;
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unsigned long vrma_slb_v;
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int rma_setup_done;
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int using_mmu_notifiers;
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struct list_head spapr_tce_tables;
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spinlock_t slot_phys_lock;
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unsigned long *slot_phys[KVM_MEM_SLOTS_NUM];
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int slot_npages[KVM_MEM_SLOTS_NUM];
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unsigned short last_vcpu[NR_CPUS];
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struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
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struct kvmppc_linear_info *hpt_li;
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#endif /* CONFIG_KVM_BOOK3S_64_HV */
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};
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/*
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* Struct for a virtual core.
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* Note: entry_exit_count combines an entry count in the bottom 8 bits
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* and an exit count in the next 8 bits. This is so that we can
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* atomically increment the entry count iff the exit count is 0
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* without taking the lock.
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*/
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struct kvmppc_vcore {
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int n_runnable;
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int n_busy;
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int num_threads;
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int entry_exit_count;
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int n_woken;
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int nap_count;
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int napping_threads;
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u16 pcpu;
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u8 vcore_state;
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u8 in_guest;
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struct list_head runnable_threads;
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spinlock_t lock;
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wait_queue_head_t wq;
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};
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#define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
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#define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
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/* Values for vcore_state */
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#define VCORE_INACTIVE 0
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#define VCORE_RUNNING 1
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#define VCORE_EXITING 2
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#define VCORE_SLEEPING 3
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struct kvmppc_pte {
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ulong eaddr;
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u64 vpage;
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ulong raddr;
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bool may_read : 1;
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bool may_write : 1;
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bool may_execute : 1;
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};
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struct kvmppc_mmu {
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/* book3s_64 only */
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void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
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u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
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u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
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void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
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void (*slbia)(struct kvm_vcpu *vcpu);
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/* book3s */
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void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
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u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
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int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
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void (*reset_msr)(struct kvm_vcpu *vcpu);
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void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
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int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
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u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
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bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
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};
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struct kvmppc_slb {
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u64 esid;
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u64 vsid;
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u64 orige;
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u64 origv;
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bool valid : 1;
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bool Ks : 1;
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bool Kp : 1;
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bool nx : 1;
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bool large : 1; /* PTEs are 16MB */
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bool tb : 1; /* 1TB segment */
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bool class : 1;
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};
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struct kvm_vcpu_arch {
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ulong host_stack;
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u32 host_pid;
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#ifdef CONFIG_PPC_BOOK3S
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struct kvmppc_slb slb[64];
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int slb_max; /* 1 + index of last valid entry in slb[] */
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int slb_nr; /* total number of entries in SLB */
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struct kvmppc_mmu mmu;
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#endif
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ulong gpr[32];
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u64 fpr[32];
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u64 fpscr;
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#ifdef CONFIG_SPE
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ulong evr[32];
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ulong spefscr;
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ulong host_spefscr;
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u64 acc;
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#endif
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#ifdef CONFIG_ALTIVEC
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vector128 vr[32];
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vector128 vscr;
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#endif
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#ifdef CONFIG_VSX
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u64 vsr[64];
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#endif
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#ifdef CONFIG_PPC_BOOK3S
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/* For Gekko paired singles */
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u32 qpr[32];
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#endif
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ulong pc;
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ulong ctr;
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ulong lr;
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ulong xer;
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u32 cr;
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#ifdef CONFIG_PPC_BOOK3S
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ulong hflags;
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ulong guest_owned_ext;
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ulong purr;
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ulong spurr;
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ulong dscr;
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ulong amr;
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ulong uamor;
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u32 ctrl;
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ulong dabr;
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#endif
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u32 vrsave; /* also USPRG0 */
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u32 mmucr;
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ulong shadow_msr;
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ulong csrr0;
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ulong csrr1;
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ulong dsrr0;
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ulong dsrr1;
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ulong mcsrr0;
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ulong mcsrr1;
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ulong mcsr;
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u32 dec;
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u32 decar;
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u32 tbl;
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u32 tbu;
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u32 tcr;
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ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
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u32 ivor[64];
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ulong ivpr;
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u32 pvr;
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u32 shadow_pid;
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u32 shadow_pid1;
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u32 pid;
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u32 swap_pid;
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u32 ccr0;
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u32 ccr1;
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u32 dbcr0;
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u32 dbcr1;
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u32 dbsr;
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u64 mmcr[3];
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u32 pmc[8];
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#ifdef CONFIG_KVM_EXIT_TIMING
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struct mutex exit_timing_lock;
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struct kvmppc_exit_timing timing_exit;
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struct kvmppc_exit_timing timing_last_enter;
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u32 last_exit_type;
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u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_last_exit;
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struct dentry *debugfs_exit_timing;
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#endif
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#ifdef CONFIG_PPC_BOOK3S
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ulong fault_dar;
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u32 fault_dsisr;
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#endif
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#ifdef CONFIG_BOOKE
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ulong fault_dear;
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ulong fault_esr;
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ulong queued_dear;
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ulong queued_esr;
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#endif
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gpa_t paddr_accessed;
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u8 io_gpr; /* GPR used as IO source/target */
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u8 mmio_is_bigendian;
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u8 mmio_sign_extend;
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u8 dcr_needed;
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u8 dcr_is_write;
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u8 osi_needed;
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u8 osi_enabled;
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u8 papr_enabled;
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u8 sane;
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u8 cpu_type;
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u8 hcall_needed;
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u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
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struct hrtimer dec_timer;
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struct tasklet_struct tasklet;
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u64 dec_jiffies;
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u64 dec_expires;
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unsigned long pending_exceptions;
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u16 last_cpu;
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u8 ceded;
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u8 prodded;
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u32 last_inst;
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struct lppaca *vpa;
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struct slb_shadow *slb_shadow;
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struct dtl *dtl;
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struct dtl *dtl_end;
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wait_queue_head_t *wqp;
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struct kvmppc_vcore *vcore;
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int ret;
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int trap;
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int state;
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int ptid;
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bool timer_running;
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wait_queue_head_t cpu_run;
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struct kvm_vcpu_arch_shared *shared;
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unsigned long magic_page_pa; /* phys addr to map the magic page to */
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unsigned long magic_page_ea; /* effect. addr to map the magic page to */
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#ifdef CONFIG_KVM_BOOK3S_64_HV
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struct kvm_vcpu_arch_shared shregs;
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unsigned long pgfault_addr;
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long pgfault_index;
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unsigned long pgfault_hpte[2];
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struct list_head run_list;
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struct task_struct *run_task;
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struct kvm_run *kvm_run;
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pgd_t *pgdir;
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#endif
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};
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/* Values for vcpu->arch.state */
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#define KVMPPC_VCPU_STOPPED 0
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#define KVMPPC_VCPU_BUSY_IN_HOST 1
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#define KVMPPC_VCPU_RUNNABLE 2
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/* Values for vcpu->arch.io_gpr */
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#define KVM_MMIO_REG_MASK 0x001f
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#define KVM_MMIO_REG_EXT_MASK 0xffe0
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#define KVM_MMIO_REG_GPR 0x0000
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#define KVM_MMIO_REG_FPR 0x0020
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#define KVM_MMIO_REG_QPR 0x0040
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#define KVM_MMIO_REG_FQPR 0x0060
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#endif /* __POWERPC_KVM_HOST_H__ */
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