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>
37 #define KVM_MAX_VCPUS NR_CPUS
38 #define KVM_MAX_VCORES NR_CPUS
39 #define KVM_MEMORY_SLOTS 32
40 /* memory slots that does not exposed to userspace */
41 #define KVM_PRIVATE_MEM_SLOTS 4
42 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
44 #ifdef CONFIG_KVM_MMIO
45 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
48 #ifdef CONFIG_KVM_BOOK3S_64_HV
49 #include <linux/mmu_notifier.h>
51 #define KVM_ARCH_WANT_MMU_NOTIFIER
54 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
55 extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
56 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
57 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
61 /* We don't currently support large pages. */
62 #define KVM_HPAGE_GFN_SHIFT(x) 0
63 #define KVM_NR_PAGE_SIZES 1
64 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
66 #define HPTEG_CACHE_NUM (1 << 15)
67 #define HPTEG_HASH_BITS_PTE 13
68 #define HPTEG_HASH_BITS_PTE_LONG 12
69 #define HPTEG_HASH_BITS_VPTE 13
70 #define HPTEG_HASH_BITS_VPTE_LONG 5
71 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
72 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
73 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
74 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
76 /* Physical Address Mask - allowed range of real mode RAM access */
77 #define KVM_PAM 0x0fffffffffffffffULL
91 struct kvm_vcpu_stat {
97 /* Account for special types of light exits: */
98 u32 itlb_real_miss_exits;
99 u32 itlb_virt_miss_exits;
100 u32 dtlb_real_miss_exits;
101 u32 dtlb_virt_miss_exits;
105 u32 emulated_inst_exits;
111 #ifdef CONFIG_PPC_BOOK3S
124 enum kvm_exit_types {
128 ITLB_REAL_MISS_EXITS,
129 ITLB_VIRT_MISS_EXITS,
130 DTLB_REAL_MISS_EXITS,
131 DTLB_VIRT_MISS_EXITS,
136 EMULATED_MTMSRWE_EXITS,
137 EMULATED_WRTEE_EXITS,
138 EMULATED_MTSPR_EXITS,
139 EMULATED_MFSPR_EXITS,
140 EMULATED_MTMSR_EXITS,
141 EMULATED_MFMSR_EXITS,
142 EMULATED_TLBSX_EXITS,
143 EMULATED_TLBWE_EXITS,
155 __NUMBER_OF_KVM_EXIT_TYPES
158 /* allow access to big endian 32bit upper/lower parts and 64bit var */
159 struct kvmppc_exit_timing {
168 struct kvmppc_pginfo {
173 struct kvmppc_spapr_tce_table {
174 struct list_head list;
178 struct page *pages[0];
181 struct kvmppc_linear_info {
183 unsigned long base_pfn;
184 unsigned long npages;
185 struct list_head list;
191 * The reverse mapping array has one entry for each HPTE,
192 * which stores the guest's view of the second word of the HPTE
193 * (including the guest physical address of the mapping),
194 * plus forward and backward pointers in a doubly-linked ring
195 * of HPTEs that map the same host page. The pointers in this
196 * ring are 32-bit HPTE indexes, to save space.
198 struct revmap_entry {
199 unsigned long guest_rpte;
200 unsigned int forw, back;
204 * We use the top bit of each memslot->rmap entry as a lock bit,
205 * and bit 32 as a present flag. The bottom 32 bits are the
206 * index in the guest HPT of a HPTE that points to the page.
208 #define KVMPPC_RMAP_LOCK_BIT 63
209 #define KVMPPC_RMAP_RC_SHIFT 32
210 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
211 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
212 #define KVMPPC_RMAP_PRESENT 0x100000000ul
213 #define KVMPPC_RMAP_INDEX 0xfffffffful
215 /* Low-order bits in kvm->arch.slot_phys[][] */
216 #define KVMPPC_PAGE_ORDER_MASK 0x1f
217 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
218 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
219 #define KVMPPC_GOT_PAGE 0x80
221 struct kvm_arch_memory_slot {
226 #ifdef CONFIG_KVM_BOOK3S_64_HV
227 unsigned long hpt_virt;
228 struct revmap_entry *revmap;
229 unsigned int host_lpid;
230 unsigned long host_lpcr;
232 unsigned long host_sdr1;
236 struct kvmppc_linear_info *rma;
237 unsigned long vrma_slb_v;
239 int using_mmu_notifiers;
241 atomic_t vcpus_running;
242 unsigned long hpt_npte;
243 unsigned long hpt_mask;
244 spinlock_t slot_phys_lock;
245 unsigned long *slot_phys[KVM_MEM_SLOTS_NUM];
246 int slot_npages[KVM_MEM_SLOTS_NUM];
247 unsigned short last_vcpu[NR_CPUS];
248 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
249 struct kvmppc_linear_info *hpt_li;
250 #endif /* CONFIG_KVM_BOOK3S_64_HV */
251 #ifdef CONFIG_PPC_BOOK3S_64
252 struct list_head spapr_tce_tables;
257 * Struct for a virtual core.
258 * Note: entry_exit_count combines an entry count in the bottom 8 bits
259 * and an exit count in the next 8 bits. This is so that we can
260 * atomically increment the entry count iff the exit count is 0
261 * without taking the lock.
263 struct kvmppc_vcore {
267 int entry_exit_count;
274 struct list_head runnable_threads;
276 wait_queue_head_t wq;
279 struct kvm_vcpu *runner;
282 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
283 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
285 /* Values for vcore_state */
286 #define VCORE_INACTIVE 0
287 #define VCORE_RUNNING 1
288 #define VCORE_EXITING 2
289 #define VCORE_SLEEPING 3
292 * Struct used to manage memory for a virtual processor area
293 * registered by a PAPR guest. There are three types of area
294 * that a guest can register.
297 void *pinned_addr; /* Address in kernel linear mapping */
298 void *pinned_end; /* End of region */
299 unsigned long next_gpa; /* Guest phys addr for update */
300 unsigned long len; /* Number of bytes required */
301 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
310 bool may_execute : 1;
315 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
316 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
317 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
318 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
319 void (*slbia)(struct kvm_vcpu *vcpu);
321 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
322 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
323 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
324 void (*reset_msr)(struct kvm_vcpu *vcpu);
325 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
326 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
327 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
328 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
340 bool large : 1; /* PTEs are 16MB */
341 bool tb : 1; /* 1TB segment */
345 struct kvm_vcpu_arch {
348 #ifdef CONFIG_PPC_BOOK3S
349 struct kvmppc_slb slb[64];
350 int slb_max; /* 1 + index of last valid entry in slb[] */
351 int slb_nr; /* total number of entries in SLB */
352 struct kvmppc_mmu mmu;
366 #ifdef CONFIG_ALTIVEC
375 #ifdef CONFIG_KVM_BOOKE_HV
386 #ifdef CONFIG_PPC_BOOK3S
387 /* For Gekko paired singles */
398 #ifdef CONFIG_PPC_BOOK3S
400 ulong guest_owned_ext;
409 u32 vrsave; /* also USPRG0 */
411 /* shadow_msr is unused for BookE HV */
427 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
446 #ifdef CONFIG_KVM_EXIT_TIMING
447 struct mutex exit_timing_lock;
448 struct kvmppc_exit_timing timing_exit;
449 struct kvmppc_exit_timing timing_last_enter;
451 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
452 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
453 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
454 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
455 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
456 u64 timing_last_exit;
457 struct dentry *debugfs_exit_timing;
460 #ifdef CONFIG_PPC_BOOK3S
474 gpa_t paddr_accessed;
475 gva_t vaddr_accessed;
477 u8 io_gpr; /* GPR used as IO source/target */
478 u8 mmio_is_bigendian;
489 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
491 struct hrtimer dec_timer;
492 struct tasklet_struct tasklet;
495 unsigned long pending_exceptions;
501 wait_queue_head_t *wqp;
502 struct kvmppc_vcore *vcore;
508 wait_queue_head_t cpu_run;
510 struct kvm_vcpu_arch_shared *shared;
511 unsigned long magic_page_pa; /* phys addr to map the magic page to */
512 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
514 #ifdef CONFIG_KVM_BOOK3S_64_HV
515 struct kvm_vcpu_arch_shared shregs;
517 unsigned long pgfault_addr;
519 unsigned long pgfault_hpte[2];
521 struct list_head run_list;
522 struct task_struct *run_task;
523 struct kvm_run *kvm_run;
526 spinlock_t vpa_update_lock;
527 struct kvmppc_vpa vpa;
528 struct kvmppc_vpa dtl;
529 struct dtl_entry *dtl_ptr;
530 unsigned long dtl_index;
532 struct kvmppc_vpa slb_shadow;
536 /* Values for vcpu->arch.state */
537 #define KVMPPC_VCPU_STOPPED 0
538 #define KVMPPC_VCPU_BUSY_IN_HOST 1
539 #define KVMPPC_VCPU_RUNNABLE 2
541 /* Values for vcpu->arch.io_gpr */
542 #define KVM_MMIO_REG_MASK 0x001f
543 #define KVM_MMIO_REG_EXT_MASK 0xffe0
544 #define KVM_MMIO_REG_GPR 0x0000
545 #define KVM_MMIO_REG_FPR 0x0020
546 #define KVM_MMIO_REG_QPR 0x0040
547 #define KVM_MMIO_REG_FQPR 0x0060
549 #define __KVM_HAVE_ARCH_WQP
551 #endif /* __POWERPC_KVM_HOST_H__ */