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KVM: s390: adapt debug entries for instruction handling
[deliverable/linux.git] / arch / s390 / kvm / kvm-s390.h
CommitLineData
b0c632db 1/*
a53c8fab 2 * definition for kvm on s390
b0c632db 3 *
a53c8fab 4 * Copyright IBM Corp. 2008, 2009
b0c632db
HC		 5 *
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.
9 *
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
11 * Christian Borntraeger <borntraeger@de.ibm.com>
628eb9b8 12 * Christian Ehrhardt <ehrhardt@de.ibm.com>
b0c632db
HC		 13 */
14
15#ifndef ARCH_S390_KVM_S390_H
16#define ARCH_S390_KVM_S390_H
8f2abe6a 17
ca872302 18#include <linux/hrtimer.h>
ba5c1e9b 19#include <linux/kvm.h>
8f2abe6a 20#include <linux/kvm_host.h>
9d8d5786 21#include <asm/facility.h>
8f2abe6a
CB		 22
23typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
24
7feb6bb8
MM		 25/* Transactional Memory Execution related macros */
26#define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10))
7feb6bb8
MM		 27#define TDB_FORMAT1 1
28#define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
29
b0c632db
HC		 30#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
31do { \
32 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
33 d_args); \
34} while (0)
35
36#define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
37do { \
38 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
39 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
40 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
41 d_args); \
42} while (0)
ba5c1e9b 43
7a42fdc2 44static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu)
ba5c1e9b 45{
7a42fdc2 46 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOPPED;
ba5c1e9b
CO		 47}
48
e08b9637
CO		 49static inline int kvm_is_ucontrol(struct kvm *kvm)
50{
51#ifdef CONFIG_KVM_S390_UCONTROL
52 if (kvm->arch.gmap)
53 return 0;
54 return 1;
55#else
56 return 0;
57#endif
58}
8d26cf7b 59
fda902cb
MM		 60#define GUEST_PREFIX_SHIFT 13
61static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu)
62{
63 return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT;
64}
65
8d26cf7b
CB		 66static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
67{
71db35d2
CB		 68 VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id,
69 prefix);
fda902cb 70 vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
d3d692c8 71 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
2c70fe44 72 kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
8d26cf7b
CB		 73}
74
8ae04b8f
AY		 75typedef u8 __bitwise ar_t;
76
77static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, ar_t *ar)
b1c571a5 78{
0c29b229
CB		 79 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
80 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
b1c571a5 81
8ae04b8f
AY		 82 if (ar)
83 *ar = base2;
84
b1c571a5
CH		 85 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
86}
87
88static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
8ae04b8f
AY		 89 u64 *address1, u64 *address2,
90 ar_t *ar_b1, ar_t *ar_b2)
b1c571a5 91{
0c29b229
CB		 92 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
93 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
94 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
95 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
b1c571a5
CH		 96
97 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
98 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
8ae04b8f
AY		 99
100 if (ar_b1)
101 *ar_b1 = base1;
102 if (ar_b2)
103 *ar_b2 = base2;
b1c571a5
CH		 104}
105
69d0d3a3
CB		 106static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
107{
ff7158b2
TH		 108 if (r1)
109 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
110 if (r2)
111 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
69d0d3a3
CB		 112}
113
8ae04b8f 114static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, ar_t *ar)
b1c571a5 115{
0c29b229
CB		 116 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
117 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
b1c571a5 118 ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
0c29b229
CB		 119 /* The displacement is a 20bit _SIGNED_ value */
120 if (disp2 & 0x80000)
121 disp2+=0xfff00000;
b1c571a5 122
8ae04b8f
AY		 123 if (ar)
124 *ar = base2;
125
0c29b229 126 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
b1c571a5
CH		 127}
128
8ae04b8f 129static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, ar_t *ar)
b1c571a5 130{
0c29b229
CB		 131 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
132 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
b1c571a5 133
8ae04b8f
AY		 134 if (ar)
135 *ar = base2;
136
b1c571a5
CH		 137 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
138}
139
ea828ebf
TH		 140/* Set the condition code in the guest program status word */
141static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
142{
143 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
144 vcpu->arch.sie_block->gpsw.mask |= cc << 44;
145}
146
1e8d2424 147/* test availability of facility in a kvm instance */
9d8d5786
MM		 148static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr)
149{
981467c9
MM		 150 return __test_facility(nr, kvm->arch.model.fac->mask) &&
151 __test_facility(nr, kvm->arch.model.fac->list);
9d8d5786
MM		 152}
153
18280d8b
MM		 154static inline int set_kvm_facility(u64 *fac_list, unsigned long nr)
155{
156 unsigned char *ptr;
157
158 if (nr >= MAX_FACILITY_BIT)
159 return -EINVAL;
160 ptr = (unsigned char *) fac_list + (nr >> 3);
161 *ptr |= (0x80UL >> (nr & 7));
162 return 0;
163}
164
6352e4d2
DH		 165/* are cpu states controlled by user space */
166static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
167{
168 return kvm->arch.user_cpu_state_ctrl != 0;
169}
170
ba5c1e9b 171int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
0e9c85a5 172void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu);
ca872302 173enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
614aeab4 174int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
2ed10cc1 175void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
67335e63 176void kvm_s390_clear_float_irqs(struct kvm *kvm);
db4a29cb
HC		 177int __must_check kvm_s390_inject_vm(struct kvm *kvm,
178 struct kvm_s390_interrupt *s390int);
179int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
383d0b05 180 struct kvm_s390_irq *irq);
db4a29cb 181int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
fa6b7fe9 182struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
6d3da241 183 u64 isc_mask, u32 schid);
15462e37
DH		 184int kvm_s390_reinject_io_int(struct kvm *kvm,
185 struct kvm_s390_interrupt_info *inti);
841b91c5 186int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked);
453423dc 187
04b41acd
TH		 188/* implemented in intercept.c */
189void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilc);
190int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
191
453423dc 192/* implemented in priv.c */
a3fb577e 193int is_valid_psw(psw_t *psw);
70455a36 194int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
bb25b9ba 195int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
8c3f61e2 196int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
48a3e950
CH		 197int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
198int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
aba07508 199int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu);
953ed88d
TH		 200int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
201int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
5288fbf0
CB		 202
203/* implemented in sigp.c */
204int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
4953919f 205int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu);
5288fbf0
CB		 206
207/* implemented in kvm-s390.c */
fa576c58 208long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable);
e879892c 209int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr);
bc17de7c
EF		 210int kvm_s390_store_adtl_status_unloaded(struct kvm_vcpu *vcpu,
211 unsigned long addr);
e879892c 212int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
bc17de7c 213int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu *vcpu, unsigned long addr);
6852d7b6
DH		 214void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu);
215void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu);
27406cd5
CB		 216void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu);
217void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu);
49b99e1e 218void exit_sie(struct kvm_vcpu *vcpu);
8e236546 219void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu);
b31605c1
DD		 220int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
221void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
9d8d5786
MM		 222unsigned long kvm_s390_fac_list_mask_size(void);
223extern unsigned long kvm_s390_fac_list_mask[];
b31605c1 224
e28acfea
CB		 225/* implemented in diag.c */
226int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
bcd84683
JF		 227/* implemented in interrupt.c */
228int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
229 struct kvm_s390_pgm_info *pgm_info);
e28acfea 230
27406cd5
CB		 231static inline void kvm_s390_vcpu_block_all(struct kvm *kvm)
232{
233 int i;
234 struct kvm_vcpu *vcpu;
235
236 WARN_ON(!mutex_is_locked(&kvm->lock));
237 kvm_for_each_vcpu(i, vcpu, kvm)
238 kvm_s390_vcpu_block(vcpu);
239}
240
241static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm)
242{
243 int i;
244 struct kvm_vcpu *vcpu;
245
246 kvm_for_each_vcpu(i, vcpu, kvm)
247 kvm_s390_vcpu_unblock(vcpu);
248}
249
1b0462e5
HC		 250/**
251 * kvm_s390_inject_prog_cond - conditionally inject a program check
252 * @vcpu: virtual cpu
253 * @rc: original return/error code
254 *
255 * This function is supposed to be used after regular guest access functions
256 * failed, to conditionally inject a program check to a vcpu. The typical
257 * pattern would look like
258 *
259 * rc = write_guest(vcpu, addr, data, len);
260 * if (rc)
261 * return kvm_s390_inject_prog_cond(vcpu, rc);
262 *
263 * A negative return code from guest access functions implies an internal error
264 * like e.g. out of memory. In these cases no program check should be injected
265 * to the guest.
266 * A positive value implies that an exception happened while accessing a guest's
267 * memory. In this case all data belonging to the corresponding program check
268 * has been stored in vcpu->arch.pgm and can be injected with
269 * kvm_s390_inject_prog_irq().
270 *
271 * Returns: - the original @rc value if @rc was negative (internal error)
272 * - zero if @rc was already zero
273 * - zero or error code from injecting if @rc was positive
274 * (program check injected to @vcpu)
275 */
276static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc)
277{
278 if (rc <= 0)
279 return rc;
280 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
281}
282
383d0b05
JF		 283int s390int_to_s390irq(struct kvm_s390_interrupt *s390int,
284 struct kvm_s390_irq *s390irq);
285
3c038e6b 286/* implemented in interrupt.c */
9a022067 287int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop);
3c038e6b 288int psw_extint_disabled(struct kvm_vcpu *vcpu);
841b91c5 289void kvm_s390_destroy_adapters(struct kvm *kvm);
ea5f4969 290int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu);
84877d93 291extern struct kvm_device_ops kvm_flic_ops;
6cddd432
DH		 292int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu);
293void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu);
816c7667
JF		 294int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu,
295 void __user *buf, int len);
296int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu,
297 __u8 __user *buf, int len);
3c038e6b 298
27291e21
DH		 299/* implemented in guestdbg.c */
300void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);
301void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu);
302void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu);
303int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
304 struct kvm_guest_debug *dbg);
305void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu);
306void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu);
307void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu);
308
b0c632db 309#endif
Linux kernel - Deliverables
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