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 #ifdef CONFIG_KVM_BOOK3S_64_HV
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_age_hva(struct kvm *kvm, unsigned long hva);
57 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
58 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
62 /* We don't currently support large pages. */
63 #define KVM_HPAGE_GFN_SHIFT(x) 0
64 #define KVM_NR_PAGE_SIZES 1
65 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
67 #define HPTEG_CACHE_NUM (1 << 15)
68 #define HPTEG_HASH_BITS_PTE 13
69 #define HPTEG_HASH_BITS_PTE_LONG 12
70 #define HPTEG_HASH_BITS_VPTE 13
71 #define HPTEG_HASH_BITS_VPTE_LONG 5
72 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
73 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
74 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
75 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
77 /* Physical Address Mask - allowed range of real mode RAM access */
78 #define KVM_PAM 0x0fffffffffffffffULL
92 struct kvm_vcpu_stat {
98 /* Account for special types of light exits: */
99 u32 itlb_real_miss_exits;
100 u32 itlb_virt_miss_exits;
101 u32 dtlb_real_miss_exits;
102 u32 dtlb_virt_miss_exits;
106 u32 emulated_inst_exits;
112 #ifdef CONFIG_PPC_BOOK3S
125 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 kvmppc_linear_info {
184 unsigned long base_pfn;
185 unsigned long npages;
186 struct list_head list;
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->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 kvm->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 {
227 #ifdef CONFIG_KVM_BOOK3S_64_HV
228 unsigned long hpt_virt;
229 struct revmap_entry *revmap;
230 unsigned int host_lpid;
231 unsigned long host_lpcr;
233 unsigned long host_sdr1;
237 struct kvmppc_linear_info *rma;
238 unsigned long vrma_slb_v;
240 int using_mmu_notifiers;
242 atomic_t vcpus_running;
243 unsigned long hpt_npte;
244 unsigned long hpt_mask;
245 spinlock_t slot_phys_lock;
246 unsigned long *slot_phys[KVM_MEM_SLOTS_NUM];
247 int slot_npages[KVM_MEM_SLOTS_NUM];
248 unsigned short last_vcpu[NR_CPUS];
249 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
250 struct kvmppc_linear_info *hpt_li;
251 #endif /* CONFIG_KVM_BOOK3S_64_HV */
252 #ifdef CONFIG_PPC_BOOK3S_64
253 struct list_head spapr_tce_tables;
258 * Struct for a virtual core.
259 * Note: entry_exit_count combines an entry count in the bottom 8 bits
260 * and an exit count in the next 8 bits. This is so that we can
261 * atomically increment the entry count iff the exit count is 0
262 * without taking the lock.
264 struct kvmppc_vcore {
268 int entry_exit_count;
275 struct list_head runnable_threads;
277 wait_queue_head_t wq;
280 struct kvm_vcpu *runner;
283 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
284 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
286 /* Values for vcore_state */
287 #define VCORE_INACTIVE 0
288 #define VCORE_RUNNING 1
289 #define VCORE_EXITING 2
290 #define VCORE_SLEEPING 3
293 * Struct used to manage memory for a virtual processor area
294 * registered by a PAPR guest. There are three types of area
295 * that a guest can register.
298 void *pinned_addr; /* Address in kernel linear mapping */
299 void *pinned_end; /* End of region */
300 unsigned long next_gpa; /* Guest phys addr for update */
301 unsigned long len; /* Number of bytes required */
302 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
311 bool may_execute : 1;
316 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
317 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
318 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
319 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
320 void (*slbia)(struct kvm_vcpu *vcpu);
322 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
323 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
324 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
325 void (*reset_msr)(struct kvm_vcpu *vcpu);
326 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
327 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
328 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
329 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
341 bool large : 1; /* PTEs are 16MB */
342 bool tb : 1; /* 1TB segment */
346 struct kvm_vcpu_arch {
349 #ifdef CONFIG_PPC_BOOK3S
350 struct kvmppc_slb slb[64];
351 int slb_max; /* 1 + index of last valid entry in slb[] */
352 int slb_nr; /* total number of entries in SLB */
353 struct kvmppc_mmu mmu;
367 #ifdef CONFIG_ALTIVEC
376 #ifdef CONFIG_KVM_BOOKE_HV
387 #ifdef CONFIG_PPC_BOOK3S
388 /* For Gekko paired singles */
399 #ifdef CONFIG_PPC_BOOK3S
401 ulong guest_owned_ext;
410 u32 vrsave; /* also USPRG0 */
412 /* shadow_msr is unused for BookE HV */
428 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
447 #ifdef CONFIG_KVM_EXIT_TIMING
448 struct mutex exit_timing_lock;
449 struct kvmppc_exit_timing timing_exit;
450 struct kvmppc_exit_timing timing_last_enter;
452 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
453 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
454 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
455 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
456 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
457 u64 timing_last_exit;
458 struct dentry *debugfs_exit_timing;
461 #ifdef CONFIG_PPC_BOOK3S
475 gpa_t paddr_accessed;
476 gva_t vaddr_accessed;
478 u8 io_gpr; /* GPR used as IO source/target */
479 u8 mmio_is_bigendian;
490 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
492 struct hrtimer dec_timer;
493 struct tasklet_struct tasklet;
496 unsigned long pending_exceptions;
502 wait_queue_head_t *wqp;
503 struct kvmppc_vcore *vcore;
509 wait_queue_head_t cpu_run;
511 struct kvm_vcpu_arch_shared *shared;
512 unsigned long magic_page_pa; /* phys addr to map the magic page to */
513 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
515 #ifdef CONFIG_KVM_BOOK3S_64_HV
516 struct kvm_vcpu_arch_shared shregs;
518 unsigned long pgfault_addr;
520 unsigned long pgfault_hpte[2];
522 struct list_head run_list;
523 struct task_struct *run_task;
524 struct kvm_run *kvm_run;
527 spinlock_t vpa_update_lock;
528 struct kvmppc_vpa vpa;
529 struct kvmppc_vpa dtl;
530 struct dtl_entry *dtl_ptr;
531 unsigned long dtl_index;
533 struct kvmppc_vpa slb_shadow;
537 /* Values for vcpu->arch.state */
538 #define KVMPPC_VCPU_STOPPED 0
539 #define KVMPPC_VCPU_BUSY_IN_HOST 1
540 #define KVMPPC_VCPU_RUNNABLE 2
542 /* Values for vcpu->arch.io_gpr */
543 #define KVM_MMIO_REG_MASK 0x001f
544 #define KVM_MMIO_REG_EXT_MASK 0xffe0
545 #define KVM_MMIO_REG_GPR 0x0000
546 #define KVM_MMIO_REG_FPR 0x0020
547 #define KVM_MMIO_REG_QPR 0x0040
548 #define KVM_MMIO_REG_FQPR 0x0060
550 #define __KVM_HAVE_ARCH_WQP
552 #endif /* __POWERPC_KVM_HOST_H__ */