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>
38 #define KVM_MAX_VCPUS NR_CPUS
39 #define KVM_MAX_VCORES NR_CPUS
40 #define KVM_USER_MEM_SLOTS 32
41 #define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS
43 #ifdef CONFIG_KVM_MMIO
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
47 /* These values are internal and can be increased later */
48 #define KVM_NR_IRQCHIPS 1
49 #define KVM_IRQCHIP_NUM_PINS 256
51 #if !defined(CONFIG_KVM_440)
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);
66 /* We don't currently support large pages. */
67 #define KVM_HPAGE_GFN_SHIFT(x) 0
68 #define KVM_NR_PAGE_SIZES 1
69 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
71 #define HPTEG_CACHE_NUM (1 << 15)
72 #define HPTEG_HASH_BITS_PTE 13
73 #define HPTEG_HASH_BITS_PTE_LONG 12
74 #define HPTEG_HASH_BITS_VPTE 13
75 #define HPTEG_HASH_BITS_VPTE_LONG 5
76 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
77 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
78 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
79 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
81 /* Physical Address Mask - allowed range of real mode RAM access */
82 #define KVM_PAM 0x0fffffffffffffffULL
96 struct kvm_vcpu_stat {
102 /* Account for special types of light exits: */
103 u32 itlb_real_miss_exits;
104 u32 itlb_virt_miss_exits;
105 u32 dtlb_real_miss_exits;
106 u32 dtlb_virt_miss_exits;
110 u32 emulated_inst_exits;
116 #ifdef CONFIG_PPC_BOOK3S
129 enum kvm_exit_types {
133 ITLB_REAL_MISS_EXITS,
134 ITLB_VIRT_MISS_EXITS,
135 DTLB_REAL_MISS_EXITS,
136 DTLB_VIRT_MISS_EXITS,
141 EMULATED_MTMSRWE_EXITS,
142 EMULATED_WRTEE_EXITS,
143 EMULATED_MTSPR_EXITS,
144 EMULATED_MFSPR_EXITS,
145 EMULATED_MTMSR_EXITS,
146 EMULATED_MFMSR_EXITS,
147 EMULATED_TLBSX_EXITS,
148 EMULATED_TLBWE_EXITS,
160 __NUMBER_OF_KVM_EXIT_TYPES
163 /* allow access to big endian 32bit upper/lower parts and 64bit var */
164 struct kvmppc_exit_timing {
173 struct kvmppc_pginfo {
178 struct kvmppc_spapr_tce_table {
179 struct list_head list;
183 struct page *pages[0];
186 struct kvm_rma_info {
188 unsigned long base_pfn;
191 /* XICS components, defined in book3s_xics.c */
196 * The reverse mapping array has one entry for each HPTE,
197 * which stores the guest's view of the second word of the HPTE
198 * (including the guest physical address of the mapping),
199 * plus forward and backward pointers in a doubly-linked ring
200 * of HPTEs that map the same host page. The pointers in this
201 * ring are 32-bit HPTE indexes, to save space.
203 struct revmap_entry {
204 unsigned long guest_rpte;
205 unsigned int forw, back;
209 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
210 * and bit 32 as a present flag. The bottom 32 bits are the
211 * index in the guest HPT of a HPTE that points to the page.
213 #define KVMPPC_RMAP_LOCK_BIT 63
214 #define KVMPPC_RMAP_RC_SHIFT 32
215 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
216 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
217 #define KVMPPC_RMAP_PRESENT 0x100000000ul
218 #define KVMPPC_RMAP_INDEX 0xfffffffful
220 /* Low-order bits in memslot->arch.slot_phys[] */
221 #define KVMPPC_PAGE_ORDER_MASK 0x1f
222 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
223 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
224 #define KVMPPC_GOT_PAGE 0x80
226 struct kvm_arch_memory_slot {
227 #ifdef CONFIG_KVM_BOOK3S_64_HV
229 unsigned long *slot_phys;
230 #endif /* CONFIG_KVM_BOOK3S_64_HV */
235 #ifdef CONFIG_KVM_BOOK3S_64_HV
236 unsigned long hpt_virt;
237 struct revmap_entry *revmap;
238 unsigned int host_lpid;
239 unsigned long host_lpcr;
241 unsigned long host_sdr1;
245 struct kvm_rma_info *rma;
246 unsigned long vrma_slb_v;
248 int using_mmu_notifiers;
250 atomic_t vcpus_running;
252 unsigned long hpt_npte;
253 unsigned long hpt_mask;
254 atomic_t hpte_mod_interest;
255 spinlock_t slot_phys_lock;
256 cpumask_t need_tlb_flush;
257 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
259 #endif /* CONFIG_KVM_BOOK3S_64_HV */
260 #ifdef CONFIG_PPC_BOOK3S_64
261 struct list_head spapr_tce_tables;
262 struct list_head rtas_tokens;
264 #ifdef CONFIG_KVM_MPIC
265 struct openpic *mpic;
267 #ifdef CONFIG_KVM_XICS
268 struct kvmppc_xics *xics;
273 * Struct for a virtual core.
274 * Note: entry_exit_count combines an entry count in the bottom 8 bits
275 * and an exit count in the next 8 bits. This is so that we can
276 * atomically increment the entry count iff the exit count is 0
277 * without taking the lock.
279 struct kvmppc_vcore {
283 int entry_exit_count;
291 struct list_head runnable_threads;
293 wait_queue_head_t wq;
296 struct kvm_vcpu *runner;
299 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
300 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
302 /* Values for vcore_state */
303 #define VCORE_INACTIVE 0
304 #define VCORE_SLEEPING 1
305 #define VCORE_STARTING 2
306 #define VCORE_RUNNING 3
307 #define VCORE_EXITING 4
310 * Struct used to manage memory for a virtual processor area
311 * registered by a PAPR guest. There are three types of area
312 * that a guest can register.
315 unsigned long gpa; /* Current guest phys addr */
316 void *pinned_addr; /* Address in kernel linear mapping */
317 void *pinned_end; /* End of region */
318 unsigned long next_gpa; /* Guest phys addr for update */
319 unsigned long len; /* Number of bytes required */
320 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
321 bool dirty; /* true => area has been modified by kernel */
330 bool may_execute : 1;
335 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
336 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
337 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
338 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
339 void (*slbia)(struct kvm_vcpu *vcpu);
341 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
342 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
343 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
344 void (*reset_msr)(struct kvm_vcpu *vcpu);
345 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
346 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
347 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
348 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
360 bool large : 1; /* PTEs are 16MB */
361 bool tb : 1; /* 1TB segment */
365 # ifdef CONFIG_PPC_FSL_BOOK3E
366 #define KVMPPC_BOOKE_IAC_NUM 2
367 #define KVMPPC_BOOKE_DAC_NUM 2
369 #define KVMPPC_BOOKE_IAC_NUM 4
370 #define KVMPPC_BOOKE_DAC_NUM 2
372 #define KVMPPC_BOOKE_MAX_IAC 4
373 #define KVMPPC_BOOKE_MAX_DAC 2
375 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
376 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
377 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
378 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
380 struct kvmppc_booke_debug_reg {
384 #ifdef CONFIG_KVM_E500MC
387 u64 iac[KVMPPC_BOOKE_MAX_IAC];
388 u64 dac[KVMPPC_BOOKE_MAX_DAC];
391 #define KVMPPC_IRQ_DEFAULT 0
392 #define KVMPPC_IRQ_MPIC 1
393 #define KVMPPC_IRQ_XICS 2
397 struct kvm_vcpu_arch {
400 #ifdef CONFIG_PPC_BOOK3S
401 struct kvmppc_slb slb[64];
402 int slb_max; /* 1 + index of last valid entry in slb[] */
403 int slb_nr; /* total number of entries in SLB */
404 struct kvmppc_mmu mmu;
418 #ifdef CONFIG_ALTIVEC
427 #ifdef CONFIG_KVM_BOOKE_HV
437 #if defined(CONFIG_BOOKE)
438 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
443 #ifdef CONFIG_PPC_BOOK3S
444 /* For Gekko paired singles */
455 #ifdef CONFIG_PPC_BOOK3S
457 ulong guest_owned_ext;
467 u32 vrsave; /* also USPRG0 */
469 /* shadow_msr is unused for BookE HV */
485 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
502 #ifdef CONFIG_KVM_EXIT_TIMING
503 struct mutex exit_timing_lock;
504 struct kvmppc_exit_timing timing_exit;
505 struct kvmppc_exit_timing timing_last_enter;
507 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
508 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
509 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
510 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
511 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
512 u64 timing_last_exit;
513 struct dentry *debugfs_exit_timing;
516 #ifdef CONFIG_PPC_BOOK3S
527 struct timer_list wdt_timer;
534 struct kvmppc_booke_debug_reg dbg_reg;
536 gpa_t paddr_accessed;
537 gva_t vaddr_accessed;
539 u8 io_gpr; /* GPR used as IO source/target */
540 u8 mmio_is_bigendian;
551 u8 epr_flags; /* KVMPPC_EPR_xxx */
554 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
556 struct hrtimer dec_timer;
557 struct tasklet_struct tasklet;
560 unsigned long pending_exceptions;
565 wait_queue_head_t *wqp;
566 struct kvmppc_vcore *vcore;
572 wait_queue_head_t cpu_run;
574 struct kvm_vcpu_arch_shared *shared;
575 unsigned long magic_page_pa; /* phys addr to map the magic page to */
576 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
578 int irq_type; /* one of KVM_IRQ_* */
580 struct openpic *mpic; /* KVM_IRQ_MPIC */
581 #ifdef CONFIG_KVM_XICS
582 struct kvmppc_icp *icp; /* XICS presentation controller */
585 #ifdef CONFIG_KVM_BOOK3S_64_HV
586 struct kvm_vcpu_arch_shared shregs;
588 unsigned long pgfault_addr;
590 unsigned long pgfault_hpte[2];
592 struct list_head run_list;
593 struct task_struct *run_task;
594 struct kvm_run *kvm_run;
597 spinlock_t vpa_update_lock;
598 struct kvmppc_vpa vpa;
599 struct kvmppc_vpa dtl;
600 struct dtl_entry *dtl_ptr;
601 unsigned long dtl_index;
603 struct kvmppc_vpa slb_shadow;
605 spinlock_t tbacct_lock;
611 /* Values for vcpu->arch.state */
612 #define KVMPPC_VCPU_NOTREADY 0
613 #define KVMPPC_VCPU_RUNNABLE 1
614 #define KVMPPC_VCPU_BUSY_IN_HOST 2
616 /* Values for vcpu->arch.io_gpr */
617 #define KVM_MMIO_REG_MASK 0x001f
618 #define KVM_MMIO_REG_EXT_MASK 0xffe0
619 #define KVM_MMIO_REG_GPR 0x0000
620 #define KVM_MMIO_REG_FPR 0x0020
621 #define KVM_MMIO_REG_QPR 0x0040
622 #define KVM_MMIO_REG_FQPR 0x0060
624 #define __KVM_HAVE_ARCH_WQP
625 #define __KVM_HAVE_CREATE_DEVICE
627 #endif /* __POWERPC_KVM_HOST_H__ */