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 #define KVM_MAX_VCPUS NR_CPUS
37 #define KVM_MAX_VCORES NR_CPUS
38 #define KVM_MEMORY_SLOTS 32
39 /* memory slots that does not exposed to userspace */
40 #define KVM_PRIVATE_MEM_SLOTS 4
41 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
43 #ifdef CONFIG_KVM_MMIO
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
47 /* We don't currently support large pages. */
48 #define KVM_HPAGE_GFN_SHIFT(x) 0
49 #define KVM_NR_PAGE_SIZES 1
50 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
52 #define HPTEG_CACHE_NUM (1 << 15)
53 #define HPTEG_HASH_BITS_PTE 13
54 #define HPTEG_HASH_BITS_PTE_LONG 12
55 #define HPTEG_HASH_BITS_VPTE 13
56 #define HPTEG_HASH_BITS_VPTE_LONG 5
57 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
58 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
59 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
60 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
62 /* Physical Address Mask - allowed range of real mode RAM access */
63 #define KVM_PAM 0x0fffffffffffffffULL
77 struct kvm_vcpu_stat {
83 /* Account for special types of light exits: */
84 u32 itlb_real_miss_exits;
85 u32 itlb_virt_miss_exits;
86 u32 dtlb_real_miss_exits;
87 u32 dtlb_virt_miss_exits;
91 u32 emulated_inst_exits;
95 #ifdef CONFIG_PPC_BOOK3S
108 enum kvm_exit_types {
112 ITLB_REAL_MISS_EXITS,
113 ITLB_VIRT_MISS_EXITS,
114 DTLB_REAL_MISS_EXITS,
115 DTLB_VIRT_MISS_EXITS,
120 EMULATED_MTMSRWE_EXITS,
121 EMULATED_WRTEE_EXITS,
122 EMULATED_MTSPR_EXITS,
123 EMULATED_MFSPR_EXITS,
124 EMULATED_MTMSR_EXITS,
125 EMULATED_MFMSR_EXITS,
126 EMULATED_TLBSX_EXITS,
127 EMULATED_TLBWE_EXITS,
136 __NUMBER_OF_KVM_EXIT_TYPES
139 /* allow access to big endian 32bit upper/lower parts and 64bit var */
140 struct kvmppc_exit_timing {
149 struct kvmppc_pginfo {
154 struct kvmppc_spapr_tce_table {
155 struct list_head list;
159 struct page *pages[0];
162 struct kvmppc_rma_info {
164 unsigned long base_pfn;
165 unsigned long npages;
166 struct list_head list;
171 * The reverse mapping array has one entry for each HPTE,
172 * which stores the guest's view of the second word of the HPTE
173 * (including the guest physical address of the mapping).
175 struct revmap_entry {
176 unsigned long guest_rpte;
179 /* Low-order bits in kvm->arch.slot_phys[][] */
180 #define KVMPPC_GOT_PAGE 0x80
183 #ifdef CONFIG_KVM_BOOK3S_64_HV
184 unsigned long hpt_virt;
185 struct revmap_entry *revmap;
186 unsigned long ram_psize;
187 unsigned long ram_porder;
189 unsigned int host_lpid;
190 unsigned long host_lpcr;
192 unsigned long host_sdr1;
196 struct kvmppc_rma_info *rma;
198 struct list_head spapr_tce_tables;
199 spinlock_t slot_phys_lock;
200 unsigned long *slot_phys[KVM_MEM_SLOTS_NUM];
201 int slot_npages[KVM_MEM_SLOTS_NUM];
202 unsigned short last_vcpu[NR_CPUS];
203 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
204 #endif /* CONFIG_KVM_BOOK3S_64_HV */
208 * Struct for a virtual core.
209 * Note: entry_exit_count combines an entry count in the bottom 8 bits
210 * and an exit count in the next 8 bits. This is so that we can
211 * atomically increment the entry count iff the exit count is 0
212 * without taking the lock.
214 struct kvmppc_vcore {
218 int entry_exit_count;
225 struct list_head runnable_threads;
227 wait_queue_head_t wq;
230 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
231 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
233 /* Values for vcore_state */
234 #define VCORE_INACTIVE 0
235 #define VCORE_RUNNING 1
236 #define VCORE_EXITING 2
237 #define VCORE_SLEEPING 3
245 bool may_execute : 1;
250 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
251 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
252 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
253 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
254 void (*slbia)(struct kvm_vcpu *vcpu);
256 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
257 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
258 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
259 void (*reset_msr)(struct kvm_vcpu *vcpu);
260 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
261 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
262 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
263 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
275 bool large : 1; /* PTEs are 16MB */
276 bool tb : 1; /* 1TB segment */
280 struct kvm_vcpu_arch {
283 #ifdef CONFIG_PPC_BOOK3S
284 struct kvmppc_slb slb[64];
285 int slb_max; /* 1 + index of last valid entry in slb[] */
286 int slb_nr; /* total number of entries in SLB */
287 struct kvmppc_mmu mmu;
301 #ifdef CONFIG_ALTIVEC
310 #ifdef CONFIG_PPC_BOOK3S
311 /* For Gekko paired singles */
322 #ifdef CONFIG_PPC_BOOK3S
324 ulong guest_owned_ext;
333 u32 vrsave; /* also USPRG0 */
348 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
367 #ifdef CONFIG_KVM_EXIT_TIMING
368 struct mutex exit_timing_lock;
369 struct kvmppc_exit_timing timing_exit;
370 struct kvmppc_exit_timing timing_last_enter;
372 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
373 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
374 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
375 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
376 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
377 u64 timing_last_exit;
378 struct dentry *debugfs_exit_timing;
381 #ifdef CONFIG_PPC_BOOK3S
392 gpa_t paddr_accessed;
394 u8 io_gpr; /* GPR used as IO source/target */
395 u8 mmio_is_bigendian;
406 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
408 struct hrtimer dec_timer;
409 struct tasklet_struct tasklet;
412 unsigned long pending_exceptions;
419 struct slb_shadow *slb_shadow;
423 wait_queue_head_t *wqp;
424 struct kvmppc_vcore *vcore;
430 wait_queue_head_t cpu_run;
432 struct kvm_vcpu_arch_shared *shared;
433 unsigned long magic_page_pa; /* phys addr to map the magic page to */
434 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
436 #ifdef CONFIG_KVM_BOOK3S_64_HV
437 struct kvm_vcpu_arch_shared shregs;
439 struct list_head run_list;
440 struct task_struct *run_task;
441 struct kvm_run *kvm_run;
445 /* Values for vcpu->arch.state */
446 #define KVMPPC_VCPU_STOPPED 0
447 #define KVMPPC_VCPU_BUSY_IN_HOST 1
448 #define KVMPPC_VCPU_RUNNABLE 2
450 #endif /* __POWERPC_KVM_HOST_H__ */