1 /* SPDX-License-Identifier: GPL-2.0 */
3 * definition for kvm on s390
5 * Copyright IBM Corp. 2008, 2009
7 * Author(s): Carsten Otte <cotte@de.ibm.com>
8 * Christian Borntraeger <borntraeger@de.ibm.com>
9 * Christian Ehrhardt <ehrhardt@de.ibm.com>
12 #ifndef ARCH_S390_KVM_S390_H
13 #define ARCH_S390_KVM_S390_H
15 #include <linux/hrtimer.h>
16 #include <linux/kvm.h>
17 #include <linux/kvm_host.h>
18 #include <asm/facility.h>
19 #include <asm/processor.h>
22 typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
24 /* Transactional Memory Execution related macros */
25 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & ECB_TE))
27 #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
29 extern debug_info_t *kvm_s390_dbf;
30 #define KVM_EVENT(d_loglevel, d_string, d_args...)\
32 debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \
36 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
38 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
42 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
44 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
45 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
46 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
50 static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu)
52 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOPPED;
55 static inline int is_vcpu_idle(struct kvm_vcpu *vcpu)
57 return test_bit(vcpu->vcpu_id, vcpu->arch.local_int.float_int->idle_mask);
60 static inline int kvm_is_ucontrol(struct kvm *kvm)
62 #ifdef CONFIG_KVM_S390_UCONTROL
71 #define GUEST_PREFIX_SHIFT 13
72 static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu)
74 return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT;
77 static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
79 VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id,
81 vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
82 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
83 kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
86 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, u8 *ar)
88 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
89 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
94 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
97 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
98 u64 *address1, u64 *address2,
101 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
102 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
103 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
104 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
106 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
107 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
115 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
118 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
120 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
123 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, u8 *ar)
125 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
126 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
127 ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
128 /* The displacement is a 20bit _SIGNED_ value */
135 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
138 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, u8 *ar)
140 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
141 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
146 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
149 /* Set the condition code in the guest program status word */
150 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
152 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
153 vcpu->arch.sie_block->gpsw.mask |= cc << 44;
156 /* test availability of facility in a kvm instance */
157 static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr)
159 return __test_facility(nr, kvm->arch.model.fac_mask) &&
160 __test_facility(nr, kvm->arch.model.fac_list);
163 static inline int set_kvm_facility(u64 *fac_list, unsigned long nr)
167 if (nr >= MAX_FACILITY_BIT)
169 ptr = (unsigned char *) fac_list + (nr >> 3);
170 *ptr |= (0x80UL >> (nr & 7));
174 static inline int test_kvm_cpu_feat(struct kvm *kvm, unsigned long nr)
176 WARN_ON_ONCE(nr >= KVM_S390_VM_CPU_FEAT_NR_BITS);
177 return test_bit_inv(nr, kvm->arch.cpu_feat);
180 /* are cpu states controlled by user space */
181 static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
183 return kvm->arch.user_cpu_state_ctrl != 0;
186 /* implemented in interrupt.c */
187 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
188 void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu);
189 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
190 int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
191 void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
192 void kvm_s390_clear_float_irqs(struct kvm *kvm);
193 int __must_check kvm_s390_inject_vm(struct kvm *kvm,
194 struct kvm_s390_interrupt *s390int);
195 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
196 struct kvm_s390_irq *irq);
197 static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
198 struct kvm_s390_pgm_info *pgm_info)
200 struct kvm_s390_irq irq = {
201 .type = KVM_S390_PROGRAM_INT,
205 return kvm_s390_inject_vcpu(vcpu, &irq);
207 static inline int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
209 struct kvm_s390_irq irq = {
210 .type = KVM_S390_PROGRAM_INT,
214 return kvm_s390_inject_vcpu(vcpu, &irq);
216 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
217 u64 isc_mask, u32 schid);
218 int kvm_s390_reinject_io_int(struct kvm *kvm,
219 struct kvm_s390_interrupt_info *inti);
220 int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked);
222 /* implemented in intercept.c */
223 u8 kvm_s390_get_ilen(struct kvm_vcpu *vcpu);
224 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
225 static inline void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilen)
227 struct kvm_s390_sie_block *sie_block = vcpu->arch.sie_block;
229 sie_block->gpsw.addr = __rewind_psw(sie_block->gpsw, ilen);
231 static inline void kvm_s390_forward_psw(struct kvm_vcpu *vcpu, int ilen)
233 kvm_s390_rewind_psw(vcpu, -ilen);
235 static inline void kvm_s390_retry_instr(struct kvm_vcpu *vcpu)
237 /* don't inject PER events if we re-execute the instruction */
238 vcpu->arch.sie_block->icptstatus &= ~0x02;
239 kvm_s390_rewind_psw(vcpu, kvm_s390_get_ilen(vcpu));
242 int handle_sthyi(struct kvm_vcpu *vcpu);
244 /* implemented in priv.c */
245 int is_valid_psw(psw_t *psw);
246 int kvm_s390_handle_aa(struct kvm_vcpu *vcpu);
247 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
248 int kvm_s390_handle_e3(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);
256 int kvm_s390_skey_check_enable(struct kvm_vcpu *vcpu);
258 /* implemented in vsie.c */
259 int kvm_s390_handle_vsie(struct kvm_vcpu *vcpu);
260 void kvm_s390_vsie_kick(struct kvm_vcpu *vcpu);
261 void kvm_s390_vsie_gmap_notifier(struct gmap *gmap, unsigned long start,
263 void kvm_s390_vsie_init(struct kvm *kvm);
264 void kvm_s390_vsie_destroy(struct kvm *kvm);
266 /* implemented in sigp.c */
267 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
268 int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu);
270 /* implemented in kvm-s390.c */
271 void kvm_s390_set_tod_clock_ext(struct kvm *kvm,
272 const struct kvm_s390_vm_tod_clock *gtod);
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_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
277 void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu);
278 void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu);
279 void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu);
280 void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu);
281 void exit_sie(struct kvm_vcpu *vcpu);
282 void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu);
283 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
284 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
285 unsigned long kvm_s390_fac_list_mask_size(void);
286 extern unsigned long kvm_s390_fac_list_mask[];
287 void kvm_s390_set_cpu_timer(struct kvm_vcpu *vcpu, __u64 cputm);
288 __u64 kvm_s390_get_cpu_timer(struct kvm_vcpu *vcpu);
290 /* implemented in diag.c */
291 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
293 static inline void kvm_s390_vcpu_block_all(struct kvm *kvm)
296 struct kvm_vcpu *vcpu;
298 WARN_ON(!mutex_is_locked(&kvm->lock));
299 kvm_for_each_vcpu(i, vcpu, kvm)
300 kvm_s390_vcpu_block(vcpu);
303 static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm)
306 struct kvm_vcpu *vcpu;
308 kvm_for_each_vcpu(i, vcpu, kvm)
309 kvm_s390_vcpu_unblock(vcpu);
312 static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm)
317 rc = get_tod_clock_fast() + kvm->arch.epoch;
323 * kvm_s390_inject_prog_cond - conditionally inject a program check
325 * @rc: original return/error code
327 * This function is supposed to be used after regular guest access functions
328 * failed, to conditionally inject a program check to a vcpu. The typical
329 * pattern would look like
331 * rc = write_guest(vcpu, addr, data, len);
333 * return kvm_s390_inject_prog_cond(vcpu, rc);
335 * A negative return code from guest access functions implies an internal error
336 * like e.g. out of memory. In these cases no program check should be injected
338 * A positive value implies that an exception happened while accessing a guest's
339 * memory. In this case all data belonging to the corresponding program check
340 * has been stored in vcpu->arch.pgm and can be injected with
341 * kvm_s390_inject_prog_irq().
343 * Returns: - the original @rc value if @rc was negative (internal error)
344 * - zero if @rc was already zero
345 * - zero or error code from injecting if @rc was positive
346 * (program check injected to @vcpu)
348 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc)
352 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
355 int s390int_to_s390irq(struct kvm_s390_interrupt *s390int,
356 struct kvm_s390_irq *s390irq);
358 /* implemented in interrupt.c */
359 int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop);
360 int psw_extint_disabled(struct kvm_vcpu *vcpu);
361 void kvm_s390_destroy_adapters(struct kvm *kvm);
362 int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu);
363 extern struct kvm_device_ops kvm_flic_ops;
364 int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu);
365 void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu);
366 int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu,
367 void __user *buf, int len);
368 int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu,
369 __u8 __user *buf, int len);
371 /* implemented in guestdbg.c */
372 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);
373 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu);
374 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu);
375 int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
376 struct kvm_guest_debug *dbg);
377 void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu);
378 void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu);
379 int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu *vcpu);
380 int kvm_s390_handle_per_event(struct kvm_vcpu *vcpu);
382 /* support for Basic/Extended SCA handling */
383 static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm)
385 struct bsca_block *sca = kvm->arch.sca; /* SCA version doesn't matter */
387 return &sca->ipte_control;
389 static inline int kvm_s390_use_sca_entries(void)
392 * Without SIGP interpretation, only SRS interpretation (if available)
393 * might use the entries. By not setting the entries and keeping them
394 * invalid, hardware will not access them but intercept.
396 return sclp.has_sigpif;
398 void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu,
399 struct mcck_volatile_info *mcck_info);