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>
22 typedef int (*intercept_handler_t
)(struct kvm_vcpu
*vcpu
);
24 /* declare vfacilities extern */
25 extern unsigned long *vfacilities
;
27 /* Transactional Memory Execution related macros */
28 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10))
30 #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
32 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
34 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
38 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
40 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
41 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
42 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
46 static inline int is_vcpu_stopped(struct kvm_vcpu
*vcpu
)
48 return atomic_read(&vcpu
->arch
.sie_block
->cpuflags
) & CPUSTAT_STOPPED
;
51 static inline int kvm_is_ucontrol(struct kvm
*kvm
)
53 #ifdef CONFIG_KVM_S390_UCONTROL
62 #define GUEST_PREFIX_SHIFT 13
63 static inline u32
kvm_s390_get_prefix(struct kvm_vcpu
*vcpu
)
65 return vcpu
->arch
.sie_block
->prefix
<< GUEST_PREFIX_SHIFT
;
68 static inline void kvm_s390_set_prefix(struct kvm_vcpu
*vcpu
, u32 prefix
)
70 vcpu
->arch
.sie_block
->prefix
= prefix
>> GUEST_PREFIX_SHIFT
;
71 kvm_make_request(KVM_REQ_TLB_FLUSH
, vcpu
);
72 kvm_make_request(KVM_REQ_MMU_RELOAD
, vcpu
);
75 static inline u64
kvm_s390_get_base_disp_s(struct kvm_vcpu
*vcpu
)
77 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
78 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16);
80 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
83 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu
*vcpu
,
84 u64
*address1
, u64
*address2
)
86 u32 base1
= (vcpu
->arch
.sie_block
->ipb
& 0xf0000000) >> 28;
87 u32 disp1
= (vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16;
88 u32 base2
= (vcpu
->arch
.sie_block
->ipb
& 0xf000) >> 12;
89 u32 disp2
= vcpu
->arch
.sie_block
->ipb
& 0x0fff;
91 *address1
= (base1
? vcpu
->run
->s
.regs
.gprs
[base1
] : 0) + disp1
;
92 *address2
= (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
95 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu
*vcpu
, int *r1
, int *r2
)
98 *r1
= (vcpu
->arch
.sie_block
->ipb
& 0x00f00000) >> 20;
100 *r2
= (vcpu
->arch
.sie_block
->ipb
& 0x000f0000) >> 16;
103 static inline u64
kvm_s390_get_base_disp_rsy(struct kvm_vcpu
*vcpu
)
105 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
106 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16) +
107 ((vcpu
->arch
.sie_block
->ipb
& 0xff00) << 4);
108 /* The displacement is a 20bit _SIGNED_ value */
112 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + (long)(int)disp2
;
115 static inline u64
kvm_s390_get_base_disp_rs(struct kvm_vcpu
*vcpu
)
117 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
118 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16);
120 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
123 /* Set the condition code in the guest program status word */
124 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu
*vcpu
, unsigned long cc
)
126 vcpu
->arch
.sie_block
->gpsw
.mask
&= ~(3UL << 44);
127 vcpu
->arch
.sie_block
->gpsw
.mask
|= cc
<< 44;
130 /* are cpu states controlled by user space */
131 static inline int kvm_s390_user_cpu_state_ctrl(struct kvm
*kvm
)
133 return kvm
->arch
.user_cpu_state_ctrl
!= 0;
136 int kvm_s390_handle_wait(struct kvm_vcpu
*vcpu
);
137 void kvm_s390_vcpu_wakeup(struct kvm_vcpu
*vcpu
);
138 enum hrtimer_restart
kvm_s390_idle_wakeup(struct hrtimer
*timer
);
139 int __must_check
kvm_s390_deliver_pending_interrupts(struct kvm_vcpu
*vcpu
);
140 void kvm_s390_clear_local_irqs(struct kvm_vcpu
*vcpu
);
141 void kvm_s390_clear_float_irqs(struct kvm
*kvm
);
142 int __must_check
kvm_s390_inject_vm(struct kvm
*kvm
,
143 struct kvm_s390_interrupt
*s390int
);
144 int __must_check
kvm_s390_inject_vcpu(struct kvm_vcpu
*vcpu
,
145 struct kvm_s390_irq
*irq
);
146 int __must_check
kvm_s390_inject_program_int(struct kvm_vcpu
*vcpu
, u16 code
);
147 struct kvm_s390_interrupt_info
*kvm_s390_get_io_int(struct kvm
*kvm
,
149 void kvm_s390_reinject_io_int(struct kvm
*kvm
,
150 struct kvm_s390_interrupt_info
*inti
);
151 int kvm_s390_mask_adapter(struct kvm
*kvm
, unsigned int id
, bool masked
);
153 /* implemented in intercept.c */
154 void kvm_s390_rewind_psw(struct kvm_vcpu
*vcpu
, int ilc
);
155 int kvm_handle_sie_intercept(struct kvm_vcpu
*vcpu
);
157 /* implemented in priv.c */
158 int is_valid_psw(psw_t
*psw
);
159 int kvm_s390_handle_b2(struct kvm_vcpu
*vcpu
);
160 int kvm_s390_handle_e5(struct kvm_vcpu
*vcpu
);
161 int kvm_s390_handle_01(struct kvm_vcpu
*vcpu
);
162 int kvm_s390_handle_b9(struct kvm_vcpu
*vcpu
);
163 int kvm_s390_handle_lpsw(struct kvm_vcpu
*vcpu
);
164 int kvm_s390_handle_stctl(struct kvm_vcpu
*vcpu
);
165 int kvm_s390_handle_lctl(struct kvm_vcpu
*vcpu
);
166 int kvm_s390_handle_eb(struct kvm_vcpu
*vcpu
);
168 /* implemented in sigp.c */
169 int kvm_s390_handle_sigp(struct kvm_vcpu
*vcpu
);
170 int kvm_s390_handle_sigp_pei(struct kvm_vcpu
*vcpu
);
172 /* implemented in kvm-s390.c */
173 long kvm_arch_fault_in_page(struct kvm_vcpu
*vcpu
, gpa_t gpa
, int writable
);
174 int kvm_s390_store_status_unloaded(struct kvm_vcpu
*vcpu
, unsigned long addr
);
175 int kvm_s390_vcpu_store_status(struct kvm_vcpu
*vcpu
, unsigned long addr
);
176 void kvm_s390_vcpu_start(struct kvm_vcpu
*vcpu
);
177 void kvm_s390_vcpu_stop(struct kvm_vcpu
*vcpu
);
178 void s390_vcpu_block(struct kvm_vcpu
*vcpu
);
179 void s390_vcpu_unblock(struct kvm_vcpu
*vcpu
);
180 void exit_sie(struct kvm_vcpu
*vcpu
);
181 void exit_sie_sync(struct kvm_vcpu
*vcpu
);
182 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu
*vcpu
);
183 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu
*vcpu
);
184 /* is cmma enabled */
185 bool kvm_s390_cmma_enabled(struct kvm
*kvm
);
186 int test_vfacility(unsigned long nr
);
188 /* implemented in diag.c */
189 int kvm_s390_handle_diag(struct kvm_vcpu
*vcpu
);
190 /* implemented in interrupt.c */
191 int kvm_s390_inject_prog_irq(struct kvm_vcpu
*vcpu
,
192 struct kvm_s390_pgm_info
*pgm_info
);
195 * kvm_s390_inject_prog_cond - conditionally inject a program check
197 * @rc: original return/error code
199 * This function is supposed to be used after regular guest access functions
200 * failed, to conditionally inject a program check to a vcpu. The typical
201 * pattern would look like
203 * rc = write_guest(vcpu, addr, data, len);
205 * return kvm_s390_inject_prog_cond(vcpu, rc);
207 * A negative return code from guest access functions implies an internal error
208 * like e.g. out of memory. In these cases no program check should be injected
210 * A positive value implies that an exception happened while accessing a guest's
211 * memory. In this case all data belonging to the corresponding program check
212 * has been stored in vcpu->arch.pgm and can be injected with
213 * kvm_s390_inject_prog_irq().
215 * Returns: - the original @rc value if @rc was negative (internal error)
216 * - zero if @rc was already zero
217 * - zero or error code from injecting if @rc was positive
218 * (program check injected to @vcpu)
220 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu
*vcpu
, int rc
)
224 return kvm_s390_inject_prog_irq(vcpu
, &vcpu
->arch
.pgm
);
227 int s390int_to_s390irq(struct kvm_s390_interrupt
*s390int
,
228 struct kvm_s390_irq
*s390irq
);
230 /* implemented in interrupt.c */
231 int kvm_s390_vcpu_has_irq(struct kvm_vcpu
*vcpu
, int exclude_stop
);
232 int psw_extint_disabled(struct kvm_vcpu
*vcpu
);
233 void kvm_s390_destroy_adapters(struct kvm
*kvm
);
234 int kvm_s390_si_ext_call_pending(struct kvm_vcpu
*vcpu
);
235 extern struct kvm_device_ops kvm_flic_ops
;
236 int kvm_s390_is_stop_irq_pending(struct kvm_vcpu
*vcpu
);
237 void kvm_s390_clear_stop_irq(struct kvm_vcpu
*vcpu
);
239 /* implemented in guestdbg.c */
240 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu
*vcpu
);
241 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu
*vcpu
);
242 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu
*vcpu
);
243 int kvm_s390_import_bp_data(struct kvm_vcpu
*vcpu
,
244 struct kvm_guest_debug
*dbg
);
245 void kvm_s390_clear_bp_data(struct kvm_vcpu
*vcpu
);
246 void kvm_s390_prepare_debug_exit(struct kvm_vcpu
*vcpu
);
247 void kvm_s390_handle_per_event(struct kvm_vcpu
*vcpu
);