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;
109 #ifdef CONFIG_PPC_BOOK3S
122 enum kvm_exit_types {
126 ITLB_REAL_MISS_EXITS,
127 ITLB_VIRT_MISS_EXITS,
128 DTLB_REAL_MISS_EXITS,
129 DTLB_VIRT_MISS_EXITS,
134 EMULATED_MTMSRWE_EXITS,
135 EMULATED_WRTEE_EXITS,
136 EMULATED_MTSPR_EXITS,
137 EMULATED_MFSPR_EXITS,
138 EMULATED_MTMSR_EXITS,
139 EMULATED_MFMSR_EXITS,
140 EMULATED_TLBSX_EXITS,
141 EMULATED_TLBWE_EXITS,
150 __NUMBER_OF_KVM_EXIT_TYPES
153 /* allow access to big endian 32bit upper/lower parts and 64bit var */
154 struct kvmppc_exit_timing {
163 struct kvmppc_pginfo {
168 struct kvmppc_spapr_tce_table {
169 struct list_head list;
173 struct page *pages[0];
176 struct kvmppc_linear_info {
178 unsigned long base_pfn;
179 unsigned long npages;
180 struct list_head list;
186 * The reverse mapping array has one entry for each HPTE,
187 * which stores the guest's view of the second word of the HPTE
188 * (including the guest physical address of the mapping),
189 * plus forward and backward pointers in a doubly-linked ring
190 * of HPTEs that map the same host page. The pointers in this
191 * ring are 32-bit HPTE indexes, to save space.
193 struct revmap_entry {
194 unsigned long guest_rpte;
195 unsigned int forw, back;
199 * We use the top bit of each memslot->rmap entry as a lock bit,
200 * and bit 32 as a present flag. The bottom 32 bits are the
201 * index in the guest HPT of a HPTE that points to the page.
203 #define KVMPPC_RMAP_LOCK_BIT 63
204 #define KVMPPC_RMAP_RC_SHIFT 32
205 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
206 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
207 #define KVMPPC_RMAP_PRESENT 0x100000000ul
208 #define KVMPPC_RMAP_INDEX 0xfffffffful
210 /* Low-order bits in kvm->arch.slot_phys[][] */
211 #define KVMPPC_PAGE_ORDER_MASK 0x1f
212 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
213 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
214 #define KVMPPC_GOT_PAGE 0x80
216 struct kvm_arch_memory_slot {
220 #ifdef CONFIG_KVM_BOOK3S_64_HV
221 unsigned long hpt_virt;
222 struct revmap_entry *revmap;
224 unsigned int host_lpid;
225 unsigned long host_lpcr;
227 unsigned long host_sdr1;
231 struct kvmppc_linear_info *rma;
232 unsigned long vrma_slb_v;
234 int using_mmu_notifiers;
235 struct list_head spapr_tce_tables;
236 spinlock_t slot_phys_lock;
237 unsigned long *slot_phys[KVM_MEM_SLOTS_NUM];
238 int slot_npages[KVM_MEM_SLOTS_NUM];
239 unsigned short last_vcpu[NR_CPUS];
240 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
241 struct kvmppc_linear_info *hpt_li;
242 #endif /* CONFIG_KVM_BOOK3S_64_HV */
246 * Struct for a virtual core.
247 * Note: entry_exit_count combines an entry count in the bottom 8 bits
248 * and an exit count in the next 8 bits. This is so that we can
249 * atomically increment the entry count iff the exit count is 0
250 * without taking the lock.
252 struct kvmppc_vcore {
256 int entry_exit_count;
263 struct list_head runnable_threads;
265 wait_queue_head_t wq;
268 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
269 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
271 /* Values for vcore_state */
272 #define VCORE_INACTIVE 0
273 #define VCORE_RUNNING 1
274 #define VCORE_EXITING 2
275 #define VCORE_SLEEPING 3
283 bool may_execute : 1;
288 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
289 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
290 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
291 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
292 void (*slbia)(struct kvm_vcpu *vcpu);
294 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
295 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
296 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
297 void (*reset_msr)(struct kvm_vcpu *vcpu);
298 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
299 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
300 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
301 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
313 bool large : 1; /* PTEs are 16MB */
314 bool tb : 1; /* 1TB segment */
318 struct kvm_vcpu_arch {
321 #ifdef CONFIG_PPC_BOOK3S
322 struct kvmppc_slb slb[64];
323 int slb_max; /* 1 + index of last valid entry in slb[] */
324 int slb_nr; /* total number of entries in SLB */
325 struct kvmppc_mmu mmu;
339 #ifdef CONFIG_ALTIVEC
348 #ifdef CONFIG_PPC_BOOK3S
349 /* For Gekko paired singles */
360 #ifdef CONFIG_PPC_BOOK3S
362 ulong guest_owned_ext;
371 u32 vrsave; /* also USPRG0 */
386 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
405 #ifdef CONFIG_KVM_EXIT_TIMING
406 struct mutex exit_timing_lock;
407 struct kvmppc_exit_timing timing_exit;
408 struct kvmppc_exit_timing timing_last_enter;
410 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
411 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
412 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
413 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
414 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
415 u64 timing_last_exit;
416 struct dentry *debugfs_exit_timing;
419 #ifdef CONFIG_PPC_BOOK3S
430 gpa_t paddr_accessed;
432 u8 io_gpr; /* GPR used as IO source/target */
433 u8 mmio_is_bigendian;
444 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
446 struct hrtimer dec_timer;
447 struct tasklet_struct tasklet;
450 unsigned long pending_exceptions;
457 struct slb_shadow *slb_shadow;
461 wait_queue_head_t *wqp;
462 struct kvmppc_vcore *vcore;
468 wait_queue_head_t cpu_run;
470 struct kvm_vcpu_arch_shared *shared;
471 unsigned long magic_page_pa; /* phys addr to map the magic page to */
472 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
474 #ifdef CONFIG_KVM_BOOK3S_64_HV
475 struct kvm_vcpu_arch_shared shregs;
477 unsigned long pgfault_addr;
479 unsigned long pgfault_hpte[2];
481 struct list_head run_list;
482 struct task_struct *run_task;
483 struct kvm_run *kvm_run;
488 /* Values for vcpu->arch.state */
489 #define KVMPPC_VCPU_STOPPED 0
490 #define KVMPPC_VCPU_BUSY_IN_HOST 1
491 #define KVMPPC_VCPU_RUNNABLE 2
493 /* Values for vcpu->arch.io_gpr */
494 #define KVM_MMIO_REG_MASK 0x001f
495 #define KVM_MMIO_REG_EXT_MASK 0xffe0
496 #define KVM_MMIO_REG_GPR 0x0000
497 #define KVM_MMIO_REG_FPR 0x0020
498 #define KVM_MMIO_REG_QPR 0x0040
499 #define KVM_MMIO_REG_FQPR 0x0060
501 #define __KVM_HAVE_ARCH_WQP
503 #endif /* __POWERPC_KVM_HOST_H__ */