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_MEMORY_SLOTS 32
41 /* memory slots that does not exposed to userspace */
42 #define KVM_PRIVATE_MEM_SLOTS 4
43 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
45 #ifdef CONFIG_KVM_MMIO
46 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
49 #if !defined(CONFIG_KVM_440)
50 #include <linux/mmu_notifier.h>
52 #define KVM_ARCH_WANT_MMU_NOTIFIER
55 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
56 extern int kvm_unmap_hva_range(struct kvm *kvm,
57 unsigned long start, unsigned long end);
58 extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
59 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
60 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
64 /* We don't currently support large pages. */
65 #define KVM_HPAGE_GFN_SHIFT(x) 0
66 #define KVM_NR_PAGE_SIZES 1
67 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
69 #define HPTEG_CACHE_NUM (1 << 15)
70 #define HPTEG_HASH_BITS_PTE 13
71 #define HPTEG_HASH_BITS_PTE_LONG 12
72 #define HPTEG_HASH_BITS_VPTE 13
73 #define HPTEG_HASH_BITS_VPTE_LONG 5
74 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
75 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
76 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
77 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
79 /* Physical Address Mask - allowed range of real mode RAM access */
80 #define KVM_PAM 0x0fffffffffffffffULL
94 struct kvm_vcpu_stat {
100 /* Account for special types of light exits: */
101 u32 itlb_real_miss_exits;
102 u32 itlb_virt_miss_exits;
103 u32 dtlb_real_miss_exits;
104 u32 dtlb_virt_miss_exits;
108 u32 emulated_inst_exits;
114 #ifdef CONFIG_PPC_BOOK3S
127 enum kvm_exit_types {
131 ITLB_REAL_MISS_EXITS,
132 ITLB_VIRT_MISS_EXITS,
133 DTLB_REAL_MISS_EXITS,
134 DTLB_VIRT_MISS_EXITS,
139 EMULATED_MTMSRWE_EXITS,
140 EMULATED_WRTEE_EXITS,
141 EMULATED_MTSPR_EXITS,
142 EMULATED_MFSPR_EXITS,
143 EMULATED_MTMSR_EXITS,
144 EMULATED_MFMSR_EXITS,
145 EMULATED_TLBSX_EXITS,
146 EMULATED_TLBWE_EXITS,
158 __NUMBER_OF_KVM_EXIT_TYPES
161 /* allow access to big endian 32bit upper/lower parts and 64bit var */
162 struct kvmppc_exit_timing {
171 struct kvmppc_pginfo {
176 struct kvmppc_spapr_tce_table {
177 struct list_head list;
181 struct page *pages[0];
184 struct kvmppc_linear_info {
186 unsigned long base_pfn;
187 unsigned long npages;
188 struct list_head list;
194 * The reverse mapping array has one entry for each HPTE,
195 * which stores the guest's view of the second word of the HPTE
196 * (including the guest physical address of the mapping),
197 * plus forward and backward pointers in a doubly-linked ring
198 * of HPTEs that map the same host page. The pointers in this
199 * ring are 32-bit HPTE indexes, to save space.
201 struct revmap_entry {
202 unsigned long guest_rpte;
203 unsigned int forw, back;
207 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
208 * and bit 32 as a present flag. The bottom 32 bits are the
209 * index in the guest HPT of a HPTE that points to the page.
211 #define KVMPPC_RMAP_LOCK_BIT 63
212 #define KVMPPC_RMAP_RC_SHIFT 32
213 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
214 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
215 #define KVMPPC_RMAP_PRESENT 0x100000000ul
216 #define KVMPPC_RMAP_INDEX 0xfffffffful
218 /* Low-order bits in memslot->arch.slot_phys[] */
219 #define KVMPPC_PAGE_ORDER_MASK 0x1f
220 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
221 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
222 #define KVMPPC_GOT_PAGE 0x80
224 struct kvm_arch_memory_slot {
225 #ifdef CONFIG_KVM_BOOK3S_64_HV
227 unsigned long *slot_phys;
228 #endif /* CONFIG_KVM_BOOK3S_64_HV */
233 #ifdef CONFIG_KVM_BOOK3S_64_HV
234 unsigned long hpt_virt;
235 struct revmap_entry *revmap;
236 unsigned int host_lpid;
237 unsigned long host_lpcr;
239 unsigned long host_sdr1;
243 struct kvmppc_linear_info *rma;
244 unsigned long vrma_slb_v;
246 int using_mmu_notifiers;
248 atomic_t vcpus_running;
249 unsigned long hpt_npte;
250 unsigned long hpt_mask;
251 spinlock_t slot_phys_lock;
252 unsigned short last_vcpu[NR_CPUS];
253 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
254 struct kvmppc_linear_info *hpt_li;
255 #endif /* CONFIG_KVM_BOOK3S_64_HV */
256 #ifdef CONFIG_PPC_BOOK3S_64
257 struct list_head spapr_tce_tables;
262 * Struct for a virtual core.
263 * Note: entry_exit_count combines an entry count in the bottom 8 bits
264 * and an exit count in the next 8 bits. This is so that we can
265 * atomically increment the entry count iff the exit count is 0
266 * without taking the lock.
268 struct kvmppc_vcore {
272 int entry_exit_count;
279 struct list_head runnable_threads;
281 wait_queue_head_t wq;
284 struct kvm_vcpu *runner;
287 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
288 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
290 /* Values for vcore_state */
291 #define VCORE_INACTIVE 0
292 #define VCORE_RUNNING 1
293 #define VCORE_EXITING 2
294 #define VCORE_SLEEPING 3
297 * Struct used to manage memory for a virtual processor area
298 * registered by a PAPR guest. There are three types of area
299 * that a guest can register.
302 void *pinned_addr; /* Address in kernel linear mapping */
303 void *pinned_end; /* End of region */
304 unsigned long next_gpa; /* Guest phys addr for update */
305 unsigned long len; /* Number of bytes required */
306 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
315 bool may_execute : 1;
320 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
321 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
322 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
323 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
324 void (*slbia)(struct kvm_vcpu *vcpu);
326 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
327 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
328 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
329 void (*reset_msr)(struct kvm_vcpu *vcpu);
330 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
331 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
332 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
333 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
345 bool large : 1; /* PTEs are 16MB */
346 bool tb : 1; /* 1TB segment */
350 # ifdef CONFIG_PPC_FSL_BOOK3E
351 #define KVMPPC_BOOKE_IAC_NUM 2
352 #define KVMPPC_BOOKE_DAC_NUM 2
354 #define KVMPPC_BOOKE_IAC_NUM 4
355 #define KVMPPC_BOOKE_DAC_NUM 2
357 #define KVMPPC_BOOKE_MAX_IAC 4
358 #define KVMPPC_BOOKE_MAX_DAC 2
360 struct kvmppc_booke_debug_reg {
364 #ifdef CONFIG_KVM_E500MC
367 u64 iac[KVMPPC_BOOKE_MAX_IAC];
368 u64 dac[KVMPPC_BOOKE_MAX_DAC];
371 struct kvm_vcpu_arch {
374 #ifdef CONFIG_PPC_BOOK3S
375 struct kvmppc_slb slb[64];
376 int slb_max; /* 1 + index of last valid entry in slb[] */
377 int slb_nr; /* total number of entries in SLB */
378 struct kvmppc_mmu mmu;
392 #ifdef CONFIG_ALTIVEC
401 #ifdef CONFIG_KVM_BOOKE_HV
412 #ifdef CONFIG_PPC_BOOK3S
413 /* For Gekko paired singles */
424 #ifdef CONFIG_PPC_BOOK3S
426 ulong guest_owned_ext;
435 u32 vrsave; /* also USPRG0 */
437 /* shadow_msr is unused for BookE HV */
453 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
470 #ifdef CONFIG_KVM_EXIT_TIMING
471 struct mutex exit_timing_lock;
472 struct kvmppc_exit_timing timing_exit;
473 struct kvmppc_exit_timing timing_last_enter;
475 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
476 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
477 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
478 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
479 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
480 u64 timing_last_exit;
481 struct dentry *debugfs_exit_timing;
484 #ifdef CONFIG_PPC_BOOK3S
495 struct timer_list wdt_timer;
499 struct kvmppc_booke_debug_reg dbg_reg;
501 gpa_t paddr_accessed;
502 gva_t vaddr_accessed;
504 u8 io_gpr; /* GPR used as IO source/target */
505 u8 mmio_is_bigendian;
517 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
519 struct hrtimer dec_timer;
520 struct tasklet_struct tasklet;
523 unsigned long pending_exceptions;
529 wait_queue_head_t *wqp;
530 struct kvmppc_vcore *vcore;
536 wait_queue_head_t cpu_run;
538 struct kvm_vcpu_arch_shared *shared;
539 unsigned long magic_page_pa; /* phys addr to map the magic page to */
540 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
542 #ifdef CONFIG_KVM_BOOK3S_64_HV
543 struct kvm_vcpu_arch_shared shregs;
545 unsigned long pgfault_addr;
547 unsigned long pgfault_hpte[2];
549 struct list_head run_list;
550 struct task_struct *run_task;
551 struct kvm_run *kvm_run;
554 spinlock_t vpa_update_lock;
555 struct kvmppc_vpa vpa;
556 struct kvmppc_vpa dtl;
557 struct dtl_entry *dtl_ptr;
558 unsigned long dtl_index;
560 struct kvmppc_vpa slb_shadow;
564 /* Values for vcpu->arch.state */
565 #define KVMPPC_VCPU_STOPPED 0
566 #define KVMPPC_VCPU_BUSY_IN_HOST 1
567 #define KVMPPC_VCPU_RUNNABLE 2
569 /* Values for vcpu->arch.io_gpr */
570 #define KVM_MMIO_REG_MASK 0x001f
571 #define KVM_MMIO_REG_EXT_MASK 0xffe0
572 #define KVM_MMIO_REG_GPR 0x0000
573 #define KVM_MMIO_REG_FPR 0x0020
574 #define KVM_MMIO_REG_QPR 0x0040
575 #define KVM_MMIO_REG_FQPR 0x0060
577 #define __KVM_HAVE_ARCH_WQP
579 #endif /* __POWERPC_KVM_HOST_H__ */