2 * definition for kvm on s390
4 * Copyright IBM Corp. 2008, 2009
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License (version 2 only)
8 * as published by the Free Software Foundation.
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
11 * Christian Borntraeger <borntraeger@de.ibm.com>
12 * Christian Ehrhardt <ehrhardt@de.ibm.com>
15 #ifndef ARCH_S390_KVM_S390_H
16 #define ARCH_S390_KVM_S390_H
18 #include <linux/hrtimer.h>
19 #include <linux/kvm.h>
20 #include <linux/kvm_host.h>
21 #include <asm/facility.h>
22 #include <asm/processor.h>
24 typedef int (*intercept_handler_t
)(struct kvm_vcpu
*vcpu
);
26 /* Transactional Memory Execution related macros */
27 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10))
29 #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
31 extern debug_info_t
*kvm_s390_dbf
;
32 #define KVM_EVENT(d_loglevel, d_string, d_args...)\
34 debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \
38 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
40 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
44 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
46 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
47 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
48 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
52 static inline int is_vcpu_stopped(struct kvm_vcpu
*vcpu
)
54 return atomic_read(&vcpu
->arch
.sie_block
->cpuflags
) & CPUSTAT_STOPPED
;
57 static inline int is_vcpu_idle(struct kvm_vcpu
*vcpu
)
59 return test_bit(vcpu
->vcpu_id
, vcpu
->arch
.local_int
.float_int
->idle_mask
);
62 static inline int kvm_is_ucontrol(struct kvm
*kvm
)
64 #ifdef CONFIG_KVM_S390_UCONTROL
73 #define GUEST_PREFIX_SHIFT 13
74 static inline u32
kvm_s390_get_prefix(struct kvm_vcpu
*vcpu
)
76 return vcpu
->arch
.sie_block
->prefix
<< GUEST_PREFIX_SHIFT
;
79 static inline void kvm_s390_set_prefix(struct kvm_vcpu
*vcpu
, u32 prefix
)
81 VCPU_EVENT(vcpu
, 3, "set prefix of cpu %03u to 0x%x", vcpu
->vcpu_id
,
83 vcpu
->arch
.sie_block
->prefix
= prefix
>> GUEST_PREFIX_SHIFT
;
84 kvm_make_request(KVM_REQ_TLB_FLUSH
, vcpu
);
85 kvm_make_request(KVM_REQ_MMU_RELOAD
, vcpu
);
88 typedef u8 __bitwise ar_t
;
90 static inline u64
kvm_s390_get_base_disp_s(struct kvm_vcpu
*vcpu
, ar_t
*ar
)
92 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
93 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16);
98 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
101 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu
*vcpu
,
102 u64
*address1
, u64
*address2
,
103 ar_t
*ar_b1
, ar_t
*ar_b2
)
105 u32 base1
= (vcpu
->arch
.sie_block
->ipb
& 0xf0000000) >> 28;
106 u32 disp1
= (vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16;
107 u32 base2
= (vcpu
->arch
.sie_block
->ipb
& 0xf000) >> 12;
108 u32 disp2
= vcpu
->arch
.sie_block
->ipb
& 0x0fff;
110 *address1
= (base1
? vcpu
->run
->s
.regs
.gprs
[base1
] : 0) + disp1
;
111 *address2
= (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
119 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu
*vcpu
, int *r1
, int *r2
)
122 *r1
= (vcpu
->arch
.sie_block
->ipb
& 0x00f00000) >> 20;
124 *r2
= (vcpu
->arch
.sie_block
->ipb
& 0x000f0000) >> 16;
127 static inline u64
kvm_s390_get_base_disp_rsy(struct kvm_vcpu
*vcpu
, ar_t
*ar
)
129 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
130 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16) +
131 ((vcpu
->arch
.sie_block
->ipb
& 0xff00) << 4);
132 /* The displacement is a 20bit _SIGNED_ value */
139 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + (long)(int)disp2
;
142 static inline u64
kvm_s390_get_base_disp_rs(struct kvm_vcpu
*vcpu
, ar_t
*ar
)
144 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
145 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16);
150 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
153 /* Set the condition code in the guest program status word */
154 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu
*vcpu
, unsigned long cc
)
156 vcpu
->arch
.sie_block
->gpsw
.mask
&= ~(3UL << 44);
157 vcpu
->arch
.sie_block
->gpsw
.mask
|= cc
<< 44;
160 /* test availability of facility in a kvm instance */
161 static inline int test_kvm_facility(struct kvm
*kvm
, unsigned long nr
)
163 return __test_facility(nr
, kvm
->arch
.model
.fac_mask
) &&
164 __test_facility(nr
, kvm
->arch
.model
.fac_list
);
167 static inline int set_kvm_facility(u64
*fac_list
, unsigned long nr
)
171 if (nr
>= MAX_FACILITY_BIT
)
173 ptr
= (unsigned char *) fac_list
+ (nr
>> 3);
174 *ptr
|= (0x80UL
>> (nr
& 7));
178 static inline int test_kvm_cpu_feat(struct kvm
*kvm
, unsigned long nr
)
180 WARN_ON_ONCE(nr
>= KVM_S390_VM_CPU_FEAT_NR_BITS
);
181 return test_bit_inv(nr
, kvm
->arch
.cpu_feat
);
184 /* are cpu states controlled by user space */
185 static inline int kvm_s390_user_cpu_state_ctrl(struct kvm
*kvm
)
187 return kvm
->arch
.user_cpu_state_ctrl
!= 0;
190 /* implemented in interrupt.c */
191 int kvm_s390_handle_wait(struct kvm_vcpu
*vcpu
);
192 void kvm_s390_vcpu_wakeup(struct kvm_vcpu
*vcpu
);
193 enum hrtimer_restart
kvm_s390_idle_wakeup(struct hrtimer
*timer
);
194 int __must_check
kvm_s390_deliver_pending_interrupts(struct kvm_vcpu
*vcpu
);
195 void kvm_s390_clear_local_irqs(struct kvm_vcpu
*vcpu
);
196 void kvm_s390_clear_float_irqs(struct kvm
*kvm
);
197 int __must_check
kvm_s390_inject_vm(struct kvm
*kvm
,
198 struct kvm_s390_interrupt
*s390int
);
199 int __must_check
kvm_s390_inject_vcpu(struct kvm_vcpu
*vcpu
,
200 struct kvm_s390_irq
*irq
);
201 static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu
*vcpu
,
202 struct kvm_s390_pgm_info
*pgm_info
)
204 struct kvm_s390_irq irq
= {
205 .type
= KVM_S390_PROGRAM_INT
,
209 return kvm_s390_inject_vcpu(vcpu
, &irq
);
211 static inline int kvm_s390_inject_program_int(struct kvm_vcpu
*vcpu
, u16 code
)
213 struct kvm_s390_irq irq
= {
214 .type
= KVM_S390_PROGRAM_INT
,
218 return kvm_s390_inject_vcpu(vcpu
, &irq
);
220 struct kvm_s390_interrupt_info
*kvm_s390_get_io_int(struct kvm
*kvm
,
221 u64 isc_mask
, u32 schid
);
222 int kvm_s390_reinject_io_int(struct kvm
*kvm
,
223 struct kvm_s390_interrupt_info
*inti
);
224 int kvm_s390_mask_adapter(struct kvm
*kvm
, unsigned int id
, bool masked
);
226 /* implemented in intercept.c */
227 u8
kvm_s390_get_ilen(struct kvm_vcpu
*vcpu
);
228 int kvm_handle_sie_intercept(struct kvm_vcpu
*vcpu
);
229 static inline void kvm_s390_rewind_psw(struct kvm_vcpu
*vcpu
, int ilen
)
231 struct kvm_s390_sie_block
*sie_block
= vcpu
->arch
.sie_block
;
233 sie_block
->gpsw
.addr
= __rewind_psw(sie_block
->gpsw
, ilen
);
235 static inline void kvm_s390_forward_psw(struct kvm_vcpu
*vcpu
, int ilen
)
237 kvm_s390_rewind_psw(vcpu
, -ilen
);
239 static inline void kvm_s390_retry_instr(struct kvm_vcpu
*vcpu
)
241 /* don't inject PER events if we re-execute the instruction */
242 vcpu
->arch
.sie_block
->icptstatus
&= ~0x02;
243 kvm_s390_rewind_psw(vcpu
, kvm_s390_get_ilen(vcpu
));
246 /* implemented in priv.c */
247 int is_valid_psw(psw_t
*psw
);
248 int kvm_s390_handle_b2(struct kvm_vcpu
*vcpu
);
249 int kvm_s390_handle_e5(struct kvm_vcpu
*vcpu
);
250 int kvm_s390_handle_01(struct kvm_vcpu
*vcpu
);
251 int kvm_s390_handle_b9(struct kvm_vcpu
*vcpu
);
252 int kvm_s390_handle_lpsw(struct kvm_vcpu
*vcpu
);
253 int kvm_s390_handle_stctl(struct kvm_vcpu
*vcpu
);
254 int kvm_s390_handle_lctl(struct kvm_vcpu
*vcpu
);
255 int kvm_s390_handle_eb(struct kvm_vcpu
*vcpu
);
257 /* implemented in vsie.c */
258 int kvm_s390_handle_vsie(struct kvm_vcpu
*vcpu
);
259 void kvm_s390_vsie_kick(struct kvm_vcpu
*vcpu
);
260 void kvm_s390_vsie_gmap_notifier(struct gmap
*gmap
, unsigned long start
,
262 void kvm_s390_vsie_init(struct kvm
*kvm
);
263 void kvm_s390_vsie_destroy(struct kvm
*kvm
);
265 /* implemented in sigp.c */
266 int kvm_s390_handle_sigp(struct kvm_vcpu
*vcpu
);
267 int kvm_s390_handle_sigp_pei(struct kvm_vcpu
*vcpu
);
269 /* implemented in sthyi.c */
270 int handle_sthyi(struct kvm_vcpu
*vcpu
);
272 /* implemented in kvm-s390.c */
273 void kvm_s390_set_tod_clock(struct kvm
*kvm
, u64 tod
);
274 long kvm_arch_fault_in_page(struct kvm_vcpu
*vcpu
, gpa_t gpa
, int writable
);
275 int kvm_s390_store_status_unloaded(struct kvm_vcpu
*vcpu
, unsigned long addr
);
276 int kvm_s390_store_adtl_status_unloaded(struct kvm_vcpu
*vcpu
,
278 int kvm_s390_vcpu_store_status(struct kvm_vcpu
*vcpu
, unsigned long addr
);
279 int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu
*vcpu
, unsigned long addr
);
280 void kvm_s390_vcpu_start(struct kvm_vcpu
*vcpu
);
281 void kvm_s390_vcpu_stop(struct kvm_vcpu
*vcpu
);
282 void kvm_s390_vcpu_block(struct kvm_vcpu
*vcpu
);
283 void kvm_s390_vcpu_unblock(struct kvm_vcpu
*vcpu
);
284 void exit_sie(struct kvm_vcpu
*vcpu
);
285 void kvm_s390_sync_request(int req
, struct kvm_vcpu
*vcpu
);
286 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu
*vcpu
);
287 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu
*vcpu
);
288 unsigned long kvm_s390_fac_list_mask_size(void);
289 extern unsigned long kvm_s390_fac_list_mask
[];
290 void kvm_s390_set_cpu_timer(struct kvm_vcpu
*vcpu
, __u64 cputm
);
291 __u64
kvm_s390_get_cpu_timer(struct kvm_vcpu
*vcpu
);
293 /* implemented in diag.c */
294 int kvm_s390_handle_diag(struct kvm_vcpu
*vcpu
);
296 static inline void kvm_s390_vcpu_block_all(struct kvm
*kvm
)
299 struct kvm_vcpu
*vcpu
;
301 WARN_ON(!mutex_is_locked(&kvm
->lock
));
302 kvm_for_each_vcpu(i
, vcpu
, kvm
)
303 kvm_s390_vcpu_block(vcpu
);
306 static inline void kvm_s390_vcpu_unblock_all(struct kvm
*kvm
)
309 struct kvm_vcpu
*vcpu
;
311 kvm_for_each_vcpu(i
, vcpu
, kvm
)
312 kvm_s390_vcpu_unblock(vcpu
);
315 static inline u64
kvm_s390_get_tod_clock_fast(struct kvm
*kvm
)
320 rc
= get_tod_clock_fast() + kvm
->arch
.epoch
;
326 * kvm_s390_inject_prog_cond - conditionally inject a program check
328 * @rc: original return/error code
330 * This function is supposed to be used after regular guest access functions
331 * failed, to conditionally inject a program check to a vcpu. The typical
332 * pattern would look like
334 * rc = write_guest(vcpu, addr, data, len);
336 * return kvm_s390_inject_prog_cond(vcpu, rc);
338 * A negative return code from guest access functions implies an internal error
339 * like e.g. out of memory. In these cases no program check should be injected
341 * A positive value implies that an exception happened while accessing a guest's
342 * memory. In this case all data belonging to the corresponding program check
343 * has been stored in vcpu->arch.pgm and can be injected with
344 * kvm_s390_inject_prog_irq().
346 * Returns: - the original @rc value if @rc was negative (internal error)
347 * - zero if @rc was already zero
348 * - zero or error code from injecting if @rc was positive
349 * (program check injected to @vcpu)
351 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu
*vcpu
, int rc
)
355 return kvm_s390_inject_prog_irq(vcpu
, &vcpu
->arch
.pgm
);
358 int s390int_to_s390irq(struct kvm_s390_interrupt
*s390int
,
359 struct kvm_s390_irq
*s390irq
);
361 /* implemented in interrupt.c */
362 int kvm_s390_vcpu_has_irq(struct kvm_vcpu
*vcpu
, int exclude_stop
);
363 int psw_extint_disabled(struct kvm_vcpu
*vcpu
);
364 void kvm_s390_destroy_adapters(struct kvm
*kvm
);
365 int kvm_s390_ext_call_pending(struct kvm_vcpu
*vcpu
);
366 extern struct kvm_device_ops kvm_flic_ops
;
367 int kvm_s390_is_stop_irq_pending(struct kvm_vcpu
*vcpu
);
368 void kvm_s390_clear_stop_irq(struct kvm_vcpu
*vcpu
);
369 int kvm_s390_set_irq_state(struct kvm_vcpu
*vcpu
,
370 void __user
*buf
, int len
);
371 int kvm_s390_get_irq_state(struct kvm_vcpu
*vcpu
,
372 __u8 __user
*buf
, int len
);
374 /* implemented in guestdbg.c */
375 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu
*vcpu
);
376 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu
*vcpu
);
377 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu
*vcpu
);
378 int kvm_s390_import_bp_data(struct kvm_vcpu
*vcpu
,
379 struct kvm_guest_debug
*dbg
);
380 void kvm_s390_clear_bp_data(struct kvm_vcpu
*vcpu
);
381 void kvm_s390_prepare_debug_exit(struct kvm_vcpu
*vcpu
);
382 int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu
*vcpu
);
383 void kvm_s390_handle_per_event(struct kvm_vcpu
*vcpu
);
385 /* support for Basic/Extended SCA handling */
386 static inline union ipte_control
*kvm_s390_get_ipte_control(struct kvm
*kvm
)
388 struct bsca_block
*sca
= kvm
->arch
.sca
; /* SCA version doesn't matter */
390 return &sca
->ipte_control
;