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
42 #ifdef CONFIG_KVM_MMIO
43 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
46 /* We don't currently support large pages. */
47 #define KVM_HPAGE_GFN_SHIFT(x) 0
48 #define KVM_NR_PAGE_SIZES 1
49 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
51 #define HPTEG_CACHE_NUM (1 << 15)
52 #define HPTEG_HASH_BITS_PTE 13
53 #define HPTEG_HASH_BITS_PTE_LONG 12
54 #define HPTEG_HASH_BITS_VPTE 13
55 #define HPTEG_HASH_BITS_VPTE_LONG 5
56 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
57 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
58 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
59 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
61 /* Physical Address Mask - allowed range of real mode RAM access */
62 #define KVM_PAM 0x0fffffffffffffffULL
76 struct kvm_vcpu_stat {
82 /* Account for special types of light exits: */
83 u32 itlb_real_miss_exits;
84 u32 itlb_virt_miss_exits;
85 u32 dtlb_real_miss_exits;
86 u32 dtlb_virt_miss_exits;
90 u32 emulated_inst_exits;
94 #ifdef CONFIG_PPC_BOOK3S
107 enum kvm_exit_types {
111 ITLB_REAL_MISS_EXITS,
112 ITLB_VIRT_MISS_EXITS,
113 DTLB_REAL_MISS_EXITS,
114 DTLB_VIRT_MISS_EXITS,
119 EMULATED_MTMSRWE_EXITS,
120 EMULATED_WRTEE_EXITS,
121 EMULATED_MTSPR_EXITS,
122 EMULATED_MFSPR_EXITS,
123 EMULATED_MTMSR_EXITS,
124 EMULATED_MFMSR_EXITS,
125 EMULATED_TLBSX_EXITS,
126 EMULATED_TLBWE_EXITS,
135 __NUMBER_OF_KVM_EXIT_TYPES
138 /* allow access to big endian 32bit upper/lower parts and 64bit var */
139 struct kvmppc_exit_timing {
148 struct kvmppc_pginfo {
153 struct kvmppc_spapr_tce_table {
154 struct list_head list;
158 struct page *pages[0];
161 struct kvmppc_rma_info {
163 unsigned long base_pfn;
164 unsigned long npages;
165 struct list_head list;
170 #ifdef CONFIG_KVM_BOOK3S_64_HV
171 unsigned long hpt_virt;
172 unsigned long ram_npages;
173 unsigned long ram_psize;
174 unsigned long ram_porder;
175 struct kvmppc_pginfo *ram_pginfo;
177 unsigned int host_lpid;
178 unsigned long host_lpcr;
180 unsigned long host_sdr1;
185 struct kvmppc_rma_info *rma;
186 struct list_head spapr_tce_tables;
187 unsigned short last_vcpu[NR_CPUS];
188 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
189 #endif /* CONFIG_KVM_BOOK3S_64_HV */
193 * Struct for a virtual core.
194 * Note: entry_exit_count combines an entry count in the bottom 8 bits
195 * and an exit count in the next 8 bits. This is so that we can
196 * atomically increment the entry count iff the exit count is 0
197 * without taking the lock.
199 struct kvmppc_vcore {
203 int entry_exit_count;
210 struct list_head runnable_threads;
212 wait_queue_head_t wq;
215 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
216 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
218 /* Values for vcore_state */
219 #define VCORE_INACTIVE 0
220 #define VCORE_RUNNING 1
221 #define VCORE_EXITING 2
222 #define VCORE_SLEEPING 3
230 bool may_execute : 1;
235 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
236 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
237 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
238 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
239 void (*slbia)(struct kvm_vcpu *vcpu);
241 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
242 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
243 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
244 void (*reset_msr)(struct kvm_vcpu *vcpu);
245 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
246 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
247 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
248 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
260 bool large : 1; /* PTEs are 16MB */
261 bool tb : 1; /* 1TB segment */
265 struct kvm_vcpu_arch {
268 #ifdef CONFIG_PPC_BOOK3S
269 struct kvmppc_slb slb[64];
270 int slb_max; /* 1 + index of last valid entry in slb[] */
271 int slb_nr; /* total number of entries in SLB */
272 struct kvmppc_mmu mmu;
286 #ifdef CONFIG_ALTIVEC
295 #ifdef CONFIG_PPC_BOOK3S
296 /* For Gekko paired singles */
307 #ifdef CONFIG_PPC_BOOK3S
309 ulong guest_owned_ext;
318 u32 vrsave; /* also USPRG0 */
358 #ifdef CONFIG_KVM_EXIT_TIMING
359 struct mutex exit_timing_lock;
360 struct kvmppc_exit_timing timing_exit;
361 struct kvmppc_exit_timing timing_last_enter;
363 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
364 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
365 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
366 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
367 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
368 u64 timing_last_exit;
369 struct dentry *debugfs_exit_timing;
372 #ifdef CONFIG_PPC_BOOK3S
383 gpa_t paddr_accessed;
385 u8 io_gpr; /* GPR used as IO source/target */
386 u8 mmio_is_bigendian;
397 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
399 struct hrtimer dec_timer;
400 struct tasklet_struct tasklet;
403 unsigned long pending_exceptions;
410 struct slb_shadow *slb_shadow;
414 wait_queue_head_t *wqp;
415 struct kvmppc_vcore *vcore;
421 wait_queue_head_t cpu_run;
423 struct kvm_vcpu_arch_shared *shared;
424 unsigned long magic_page_pa; /* phys addr to map the magic page to */
425 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
427 #ifdef CONFIG_KVM_BOOK3S_64_HV
428 struct kvm_vcpu_arch_shared shregs;
430 struct list_head run_list;
431 struct task_struct *run_task;
432 struct kvm_run *kvm_run;
436 /* Values for vcpu->arch.state */
437 #define KVMPPC_VCPU_STOPPED 0
438 #define KVMPPC_VCPU_BUSY_IN_HOST 1
439 #define KVMPPC_VCPU_RUNNABLE 2
441 #endif /* __POWERPC_KVM_HOST_H__ */