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 int kvm_handle_sie_intercept(struct kvm_vcpu
*vcpu
);
29 /* Transactional Memory Execution related macros */
30 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10))
32 #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
34 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
36 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
40 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
42 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
43 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
44 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
48 static inline int is_vcpu_stopped(struct kvm_vcpu
*vcpu
)
50 return atomic_read(&vcpu
->arch
.sie_block
->cpuflags
) & CPUSTAT_STOPPED
;
53 static inline int kvm_is_ucontrol(struct kvm
*kvm
)
55 #ifdef CONFIG_KVM_S390_UCONTROL
64 #define GUEST_PREFIX_SHIFT 13
65 static inline u32
kvm_s390_get_prefix(struct kvm_vcpu
*vcpu
)
67 return vcpu
->arch
.sie_block
->prefix
<< GUEST_PREFIX_SHIFT
;
70 static inline void kvm_s390_set_prefix(struct kvm_vcpu
*vcpu
, u32 prefix
)
72 vcpu
->arch
.sie_block
->prefix
= prefix
>> GUEST_PREFIX_SHIFT
;
73 vcpu
->arch
.sie_block
->ihcpu
= 0xffff;
74 kvm_make_request(KVM_REQ_MMU_RELOAD
, vcpu
);
77 static inline u64
kvm_s390_get_base_disp_s(struct kvm_vcpu
*vcpu
)
79 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
80 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16);
82 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
85 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu
*vcpu
,
86 u64
*address1
, u64
*address2
)
88 u32 base1
= (vcpu
->arch
.sie_block
->ipb
& 0xf0000000) >> 28;
89 u32 disp1
= (vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16;
90 u32 base2
= (vcpu
->arch
.sie_block
->ipb
& 0xf000) >> 12;
91 u32 disp2
= vcpu
->arch
.sie_block
->ipb
& 0x0fff;
93 *address1
= (base1
? vcpu
->run
->s
.regs
.gprs
[base1
] : 0) + disp1
;
94 *address2
= (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
97 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu
*vcpu
, int *r1
, int *r2
)
100 *r1
= (vcpu
->arch
.sie_block
->ipb
& 0x00f00000) >> 20;
102 *r2
= (vcpu
->arch
.sie_block
->ipb
& 0x000f0000) >> 16;
105 static inline u64
kvm_s390_get_base_disp_rsy(struct kvm_vcpu
*vcpu
)
107 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
108 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16) +
109 ((vcpu
->arch
.sie_block
->ipb
& 0xff00) << 4);
110 /* The displacement is a 20bit _SIGNED_ value */
114 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + (long)(int)disp2
;
117 static inline u64
kvm_s390_get_base_disp_rs(struct kvm_vcpu
*vcpu
)
119 u32 base2
= vcpu
->arch
.sie_block
->ipb
>> 28;
120 u32 disp2
= ((vcpu
->arch
.sie_block
->ipb
& 0x0fff0000) >> 16);
122 return (base2
? vcpu
->run
->s
.regs
.gprs
[base2
] : 0) + disp2
;
125 /* Set the condition code in the guest program status word */
126 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu
*vcpu
, unsigned long cc
)
128 vcpu
->arch
.sie_block
->gpsw
.mask
&= ~(3UL << 44);
129 vcpu
->arch
.sie_block
->gpsw
.mask
|= cc
<< 44;
132 /* are cpu states controlled by user space */
133 static inline int kvm_s390_user_cpu_state_ctrl(struct kvm
*kvm
)
135 return kvm
->arch
.user_cpu_state_ctrl
!= 0;
138 int kvm_s390_handle_wait(struct kvm_vcpu
*vcpu
);
139 void kvm_s390_vcpu_wakeup(struct kvm_vcpu
*vcpu
);
140 enum hrtimer_restart
kvm_s390_idle_wakeup(struct hrtimer
*timer
);
141 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu
*vcpu
);
142 void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu
*vcpu
);
143 void kvm_s390_clear_local_irqs(struct kvm_vcpu
*vcpu
);
144 void kvm_s390_clear_float_irqs(struct kvm
*kvm
);
145 int __must_check
kvm_s390_inject_vm(struct kvm
*kvm
,
146 struct kvm_s390_interrupt
*s390int
);
147 int __must_check
kvm_s390_inject_vcpu(struct kvm_vcpu
*vcpu
,
148 struct kvm_s390_interrupt
*s390int
);
149 int __must_check
kvm_s390_inject_program_int(struct kvm_vcpu
*vcpu
, u16 code
);
150 struct kvm_s390_interrupt_info
*kvm_s390_get_io_int(struct kvm
*kvm
,
152 void kvm_s390_reinject_io_int(struct kvm
*kvm
,
153 struct kvm_s390_interrupt_info
*inti
);
154 int kvm_s390_mask_adapter(struct kvm
*kvm
, unsigned int id
, bool masked
);
156 /* implemented in priv.c */
157 int is_valid_psw(psw_t
*psw
);
158 int kvm_s390_handle_b2(struct kvm_vcpu
*vcpu
);
159 int kvm_s390_handle_e5(struct kvm_vcpu
*vcpu
);
160 int kvm_s390_handle_01(struct kvm_vcpu
*vcpu
);
161 int kvm_s390_handle_b9(struct kvm_vcpu
*vcpu
);
162 int kvm_s390_handle_lpsw(struct kvm_vcpu
*vcpu
);
163 int kvm_s390_handle_stctl(struct kvm_vcpu
*vcpu
);
164 int kvm_s390_handle_lctl(struct kvm_vcpu
*vcpu
);
165 int kvm_s390_handle_eb(struct kvm_vcpu
*vcpu
);
167 /* implemented in sigp.c */
168 int kvm_s390_handle_sigp(struct kvm_vcpu
*vcpu
);
169 int kvm_s390_handle_sigp_pei(struct kvm_vcpu
*vcpu
);
171 /* implemented in kvm-s390.c */
172 long kvm_arch_fault_in_page(struct kvm_vcpu
*vcpu
, gpa_t gpa
, int writable
);
173 int kvm_s390_store_status_unloaded(struct kvm_vcpu
*vcpu
, unsigned long addr
);
174 int kvm_s390_vcpu_store_status(struct kvm_vcpu
*vcpu
, unsigned long addr
);
175 void kvm_s390_vcpu_start(struct kvm_vcpu
*vcpu
);
176 void kvm_s390_vcpu_stop(struct kvm_vcpu
*vcpu
);
177 void s390_vcpu_block(struct kvm_vcpu
*vcpu
);
178 void s390_vcpu_unblock(struct kvm_vcpu
*vcpu
);
179 void exit_sie(struct kvm_vcpu
*vcpu
);
180 void exit_sie_sync(struct kvm_vcpu
*vcpu
);
181 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu
*vcpu
);
182 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu
*vcpu
);
183 /* is cmma enabled */
184 bool kvm_s390_cmma_enabled(struct kvm
*kvm
);
185 int test_vfacility(unsigned long nr
);
187 /* implemented in diag.c */
188 int kvm_s390_handle_diag(struct kvm_vcpu
*vcpu
);
189 /* implemented in interrupt.c */
190 int kvm_s390_inject_prog_irq(struct kvm_vcpu
*vcpu
,
191 struct kvm_s390_pgm_info
*pgm_info
);
194 * kvm_s390_inject_prog_cond - conditionally inject a program check
196 * @rc: original return/error code
198 * This function is supposed to be used after regular guest access functions
199 * failed, to conditionally inject a program check to a vcpu. The typical
200 * pattern would look like
202 * rc = write_guest(vcpu, addr, data, len);
204 * return kvm_s390_inject_prog_cond(vcpu, rc);
206 * A negative return code from guest access functions implies an internal error
207 * like e.g. out of memory. In these cases no program check should be injected
209 * A positive value implies that an exception happened while accessing a guest's
210 * memory. In this case all data belonging to the corresponding program check
211 * has been stored in vcpu->arch.pgm and can be injected with
212 * kvm_s390_inject_prog_irq().
214 * Returns: - the original @rc value if @rc was negative (internal error)
215 * - zero if @rc was already zero
216 * - zero or error code from injecting if @rc was positive
217 * (program check injected to @vcpu)
219 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu
*vcpu
, int rc
)
223 return kvm_s390_inject_prog_irq(vcpu
, &vcpu
->arch
.pgm
);
226 /* implemented in interrupt.c */
227 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
228 int psw_extint_disabled(struct kvm_vcpu
*vcpu
);
229 void kvm_s390_destroy_adapters(struct kvm
*kvm
);
230 int kvm_s390_si_ext_call_pending(struct kvm_vcpu
*vcpu
);
232 /* implemented in guestdbg.c */
233 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu
*vcpu
);
234 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu
*vcpu
);
235 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu
*vcpu
);
236 int kvm_s390_import_bp_data(struct kvm_vcpu
*vcpu
,
237 struct kvm_guest_debug
*dbg
);
238 void kvm_s390_clear_bp_data(struct kvm_vcpu
*vcpu
);
239 void kvm_s390_prepare_debug_exit(struct kvm_vcpu
*vcpu
);
240 void kvm_s390_handle_per_event(struct kvm_vcpu
*vcpu
);
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