2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 * Copyright IBM Corp. 2007
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
20 #ifndef __POWERPC_KVM_HOST_H__
21 #define __POWERPC_KVM_HOST_H__
23 #include <linux/mutex.h>
24 #include <linux/hrtimer.h>
25 #include <linux/interrupt.h>
26 #include <linux/types.h>
27 #include <linux/kvm_types.h>
28 #include <linux/threads.h>
29 #include <linux/spinlock.h>
30 #include <linux/kvm_para.h>
31 #include <linux/list.h>
32 #include <linux/atomic.h>
33 #include <asm/kvm_asm.h>
34 #include <asm/processor.h>
36 #include <asm/cacheflush.h>
37 #include <asm/hvcall.h>
39 #define KVM_MAX_VCPUS NR_CPUS
40 #define KVM_MAX_VCORES NR_CPUS
41 #define KVM_USER_MEM_SLOTS 32
42 #define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS
44 #ifdef CONFIG_KVM_MMIO
45 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
48 /* These values are internal and can be increased later */
49 #define KVM_NR_IRQCHIPS 1
50 #define KVM_IRQCHIP_NUM_PINS 256
52 #include <linux/mmu_notifier.h>
54 #define KVM_ARCH_WANT_MMU_NOTIFIER
57 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
58 extern int kvm_unmap_hva_range(struct kvm *kvm,
59 unsigned long start, unsigned long end);
60 extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
61 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
62 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
64 #define HPTEG_CACHE_NUM (1 << 15)
65 #define HPTEG_HASH_BITS_PTE 13
66 #define HPTEG_HASH_BITS_PTE_LONG 12
67 #define HPTEG_HASH_BITS_VPTE 13
68 #define HPTEG_HASH_BITS_VPTE_LONG 5
69 #define HPTEG_HASH_BITS_VPTE_64K 11
70 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
71 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
72 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
73 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
74 #define HPTEG_HASH_NUM_VPTE_64K (1 << HPTEG_HASH_BITS_VPTE_64K)
76 /* Physical Address Mask - allowed range of real mode RAM access */
77 #define KVM_PAM 0x0fffffffffffffffULL
87 struct kvmppc_vcpu_book3s;
88 struct kvmppc_book3s_shadow_vcpu;
94 struct kvm_vcpu_stat {
99 /* Account for special types of light exits: */
100 u32 itlb_real_miss_exits;
101 u32 itlb_virt_miss_exits;
102 u32 dtlb_real_miss_exits;
103 u32 dtlb_virt_miss_exits;
107 u32 emulated_inst_exits;
115 #ifdef CONFIG_PPC_BOOK3S
126 enum kvm_exit_types {
129 ITLB_REAL_MISS_EXITS,
130 ITLB_VIRT_MISS_EXITS,
131 DTLB_REAL_MISS_EXITS,
132 DTLB_VIRT_MISS_EXITS,
137 EMULATED_MTMSRWE_EXITS,
138 EMULATED_WRTEE_EXITS,
139 EMULATED_MTSPR_EXITS,
140 EMULATED_MFSPR_EXITS,
141 EMULATED_MTMSR_EXITS,
142 EMULATED_MFMSR_EXITS,
143 EMULATED_TLBSX_EXITS,
144 EMULATED_TLBWE_EXITS,
156 __NUMBER_OF_KVM_EXIT_TYPES
159 /* allow access to big endian 32bit upper/lower parts and 64bit var */
160 struct kvmppc_exit_timing {
169 struct kvmppc_pginfo {
174 struct kvmppc_spapr_tce_table {
175 struct list_head list;
179 struct page *pages[0];
182 struct kvm_rma_info {
184 unsigned long base_pfn;
187 /* XICS components, defined in book3s_xics.c */
192 * The reverse mapping array has one entry for each HPTE,
193 * which stores the guest's view of the second word of the HPTE
194 * (including the guest physical address of the mapping),
195 * plus forward and backward pointers in a doubly-linked ring
196 * of HPTEs that map the same host page. The pointers in this
197 * ring are 32-bit HPTE indexes, to save space.
199 struct revmap_entry {
200 unsigned long guest_rpte;
201 unsigned int forw, back;
205 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
206 * and bit 32 as a present flag. The bottom 32 bits are the
207 * index in the guest HPT of a HPTE that points to the page.
209 #define KVMPPC_RMAP_LOCK_BIT 63
210 #define KVMPPC_RMAP_RC_SHIFT 32
211 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
212 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
213 #define KVMPPC_RMAP_PRESENT 0x100000000ul
214 #define KVMPPC_RMAP_INDEX 0xfffffffful
216 /* Low-order bits in memslot->arch.slot_phys[] */
217 #define KVMPPC_PAGE_ORDER_MASK 0x1f
218 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
219 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
220 #define KVMPPC_GOT_PAGE 0x80
222 struct kvm_arch_memory_slot {
223 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
225 unsigned long *slot_phys;
226 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
231 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
232 unsigned long hpt_virt;
233 struct revmap_entry *revmap;
234 unsigned int host_lpid;
235 unsigned long host_lpcr;
237 unsigned long host_sdr1;
241 struct kvm_rma_info *rma;
242 unsigned long vrma_slb_v;
244 int using_mmu_notifiers;
246 atomic_t vcpus_running;
248 unsigned long hpt_npte;
249 unsigned long hpt_mask;
250 atomic_t hpte_mod_interest;
251 spinlock_t slot_phys_lock;
252 cpumask_t need_tlb_flush;
254 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
255 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
256 struct mutex hpt_mutex;
258 #ifdef CONFIG_PPC_BOOK3S_64
259 struct list_head spapr_tce_tables;
260 struct list_head rtas_tokens;
261 DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
263 #ifdef CONFIG_KVM_MPIC
264 struct openpic *mpic;
266 #ifdef CONFIG_KVM_XICS
267 struct kvmppc_xics *xics;
269 struct kvmppc_ops *kvm_ops;
270 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
271 /* This array can grow quite large, keep it at the end */
272 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
277 * Struct for a virtual core.
278 * Note: entry_exit_count combines an entry count in the bottom 8 bits
279 * and an exit count in the next 8 bits. This is so that we can
280 * atomically increment the entry count iff the exit count is 0
281 * without taking the lock.
283 struct kvmppc_vcore {
287 int entry_exit_count;
296 struct list_head runnable_threads;
298 wait_queue_head_t wq;
301 struct kvm_vcpu *runner;
303 u64 tb_offset; /* guest timebase - host timebase */
307 ulong dpdes; /* doorbell state (POWER8) */
308 void *mpp_buffer; /* Micro Partition Prefetch buffer */
309 bool mpp_buffer_is_valid;
312 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
313 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
315 /* Values for vcore_state */
316 #define VCORE_INACTIVE 0
317 #define VCORE_SLEEPING 1
318 #define VCORE_STARTING 2
319 #define VCORE_RUNNING 3
320 #define VCORE_EXITING 4
323 * Struct used to manage memory for a virtual processor area
324 * registered by a PAPR guest. There are three types of area
325 * that a guest can register.
328 unsigned long gpa; /* Current guest phys addr */
329 void *pinned_addr; /* Address in kernel linear mapping */
330 void *pinned_end; /* End of region */
331 unsigned long next_gpa; /* Guest phys addr for update */
332 unsigned long len; /* Number of bytes required */
333 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
334 bool dirty; /* true => area has been modified by kernel */
343 bool may_execute : 1;
344 u8 page_size; /* MMU_PAGE_xxx */
349 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
350 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
351 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
352 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
353 void (*slbia)(struct kvm_vcpu *vcpu);
355 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
356 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
357 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
358 struct kvmppc_pte *pte, bool data, bool iswrite);
359 void (*reset_msr)(struct kvm_vcpu *vcpu);
360 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
361 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
362 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
363 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
375 bool large : 1; /* PTEs are 16MB */
376 bool tb : 1; /* 1TB segment */
378 u8 base_page_size; /* MMU_PAGE_xxx */
381 # ifdef CONFIG_PPC_FSL_BOOK3E
382 #define KVMPPC_BOOKE_IAC_NUM 2
383 #define KVMPPC_BOOKE_DAC_NUM 2
385 #define KVMPPC_BOOKE_IAC_NUM 4
386 #define KVMPPC_BOOKE_DAC_NUM 2
388 #define KVMPPC_BOOKE_MAX_IAC 4
389 #define KVMPPC_BOOKE_MAX_DAC 2
391 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
392 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
393 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
394 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
396 #define KVMPPC_IRQ_DEFAULT 0
397 #define KVMPPC_IRQ_MPIC 1
398 #define KVMPPC_IRQ_XICS 2
402 struct kvm_vcpu_arch {
405 #ifdef CONFIG_PPC_BOOK3S
406 struct kvmppc_slb slb[64];
407 int slb_max; /* 1 + index of last valid entry in slb[] */
408 int slb_nr; /* total number of entries in SLB */
409 struct kvmppc_mmu mmu;
410 struct kvmppc_vcpu_book3s *book3s;
412 #ifdef CONFIG_PPC_BOOK3S_32
413 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
418 struct thread_fp_state fp;
426 #ifdef CONFIG_ALTIVEC
427 struct thread_vr_state vr;
430 #ifdef CONFIG_KVM_BOOKE_HV
440 #if defined(CONFIG_BOOKE)
441 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
446 #ifdef CONFIG_PPC_BOOK3S
447 /* For Gekko paired singles */
454 #ifdef CONFIG_PPC_BOOK3S
461 #ifdef CONFIG_PPC_BOOK3S
463 ulong guest_owned_ext;
493 u32 vrsave; /* also USPRG0 */
495 /* shadow_msr is unused for BookE HV */
508 /* Time base value when we entered the guest */
513 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
533 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
548 struct thread_fp_state fp_tm;
550 struct thread_vr_state vr_tm;
551 u32 vrsave_tm; /* also USPRG0 */
555 #ifdef CONFIG_KVM_EXIT_TIMING
556 struct mutex exit_timing_lock;
557 struct kvmppc_exit_timing timing_exit;
558 struct kvmppc_exit_timing timing_last_enter;
560 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
561 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
562 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
563 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
564 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
565 u64 timing_last_exit;
566 struct dentry *debugfs_exit_timing;
569 #ifdef CONFIG_PPC_BOOK3S
572 unsigned long intr_msr;
581 struct timer_list wdt_timer;
590 /* guest debug registers*/
591 struct debug_reg dbg_reg;
592 /* hardware visible debug registers when in guest state */
593 struct debug_reg shadow_dbg_reg;
595 gpa_t paddr_accessed;
596 gva_t vaddr_accessed;
599 u8 io_gpr; /* GPR used as IO source/target */
600 u8 mmio_is_bigendian;
609 u8 epr_flags; /* KVMPPC_EPR_xxx */
612 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
614 struct hrtimer dec_timer;
615 struct tasklet_struct tasklet;
618 unsigned long pending_exceptions;
623 wait_queue_head_t *wqp;
624 struct kvmppc_vcore *vcore;
630 wait_queue_head_t cpu_run;
632 struct kvm_vcpu_arch_shared *shared;
633 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
634 bool shared_big_endian;
636 unsigned long magic_page_pa; /* phys addr to map the magic page to */
637 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
638 bool disable_kernel_nx;
640 int irq_type; /* one of KVM_IRQ_* */
642 struct openpic *mpic; /* KVM_IRQ_MPIC */
643 #ifdef CONFIG_KVM_XICS
644 struct kvmppc_icp *icp; /* XICS presentation controller */
647 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
648 struct kvm_vcpu_arch_shared shregs;
650 unsigned long pgfault_addr;
652 unsigned long pgfault_hpte[2];
654 struct list_head run_list;
655 struct task_struct *run_task;
656 struct kvm_run *kvm_run;
658 spinlock_t vpa_update_lock;
659 struct kvmppc_vpa vpa;
660 struct kvmppc_vpa dtl;
661 struct dtl_entry *dtl_ptr;
662 unsigned long dtl_index;
664 struct kvmppc_vpa slb_shadow;
666 spinlock_t tbacct_lock;
672 #define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
674 /* Values for vcpu->arch.state */
675 #define KVMPPC_VCPU_NOTREADY 0
676 #define KVMPPC_VCPU_RUNNABLE 1
677 #define KVMPPC_VCPU_BUSY_IN_HOST 2
679 /* Values for vcpu->arch.io_gpr */
680 #define KVM_MMIO_REG_MASK 0x001f
681 #define KVM_MMIO_REG_EXT_MASK 0xffe0
682 #define KVM_MMIO_REG_GPR 0x0000
683 #define KVM_MMIO_REG_FPR 0x0020
684 #define KVM_MMIO_REG_QPR 0x0040
685 #define KVM_MMIO_REG_FQPR 0x0060
687 #define __KVM_HAVE_ARCH_WQP
688 #define __KVM_HAVE_CREATE_DEVICE
690 #endif /* __POWERPC_KVM_HOST_H__ */