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Merge branch 'x86/boot' into x86/urgent
[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{
fda902cb 68 vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
d3d692c8 69 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
2c70fe44 70 kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
8d26cf7b
CB		 71}
72
8ae04b8f
AY		 73typedef u8 __bitwise ar_t;
74
75static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, ar_t *ar)
b1c571a5 76{
0c29b229
CB		 77 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
78 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
b1c571a5 79
8ae04b8f
AY		 80 if (ar)
81 *ar = base2;
82
b1c571a5
CH		 83 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
84}
85
86static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
8ae04b8f
AY		 87 u64 *address1, u64 *address2,
88 ar_t *ar_b1, ar_t *ar_b2)
b1c571a5 89{
0c29b229
CB		 90 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
91 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
92 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
93 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
b1c571a5
CH		 94
95 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
96 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
8ae04b8f
AY		 97
98 if (ar_b1)
99 *ar_b1 = base1;
100 if (ar_b2)
101 *ar_b2 = base2;
b1c571a5
CH		 102}
103
69d0d3a3
CB		 104static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
105{
ff7158b2
TH		 106 if (r1)
107 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
108 if (r2)
109 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
69d0d3a3
CB		 110}
111
8ae04b8f 112static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, ar_t *ar)
b1c571a5 113{
0c29b229
CB		 114 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
115 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
b1c571a5 116 ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
0c29b229
CB		 117 /* The displacement is a 20bit _SIGNED_ value */
118 if (disp2 & 0x80000)
119 disp2+=0xfff00000;
b1c571a5 120
8ae04b8f
AY		 121 if (ar)
122 *ar = base2;
123
0c29b229 124 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
b1c571a5
CH		 125}
126
8ae04b8f 127static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, ar_t *ar)
b1c571a5 128{
0c29b229
CB		 129 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
130 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
b1c571a5 131
8ae04b8f
AY		 132 if (ar)
133 *ar = base2;
134
b1c571a5
CH		 135 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
136}
137
ea828ebf
TH		 138/* Set the condition code in the guest program status word */
139static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
140{
141 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
142 vcpu->arch.sie_block->gpsw.mask |= cc << 44;
143}
144
1e8d2424 145/* test availability of facility in a kvm instance */
9d8d5786
MM		 146static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr)
147{
981467c9
MM		 148 return __test_facility(nr, kvm->arch.model.fac->mask) &&
149 __test_facility(nr, kvm->arch.model.fac->list);
9d8d5786
MM		 150}
151
18280d8b
MM		 152static inline int set_kvm_facility(u64 *fac_list, unsigned long nr)
153{
154 unsigned char *ptr;
155
156 if (nr >= MAX_FACILITY_BIT)
157 return -EINVAL;
158 ptr = (unsigned char *) fac_list + (nr >> 3);
159 *ptr |= (0x80UL >> (nr & 7));
160 return 0;
161}
162
6352e4d2
DH		 163/* are cpu states controlled by user space */
164static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
165{
166 return kvm->arch.user_cpu_state_ctrl != 0;
167}
168
ba5c1e9b 169int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
0e9c85a5 170void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu);
ca872302 171enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
614aeab4 172int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
2ed10cc1 173void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
67335e63 174void kvm_s390_clear_float_irqs(struct kvm *kvm);
db4a29cb
HC		 175int __must_check kvm_s390_inject_vm(struct kvm *kvm,
176 struct kvm_s390_interrupt *s390int);
177int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
383d0b05 178 struct kvm_s390_irq *irq);
db4a29cb 179int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
fa6b7fe9 180struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
6d3da241 181 u64 isc_mask, u32 schid);
15462e37
DH		 182int kvm_s390_reinject_io_int(struct kvm *kvm,
183 struct kvm_s390_interrupt_info *inti);
841b91c5 184int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked);
453423dc 185
04b41acd
TH		 186/* implemented in intercept.c */
187void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilc);
188int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
189
453423dc 190/* implemented in priv.c */
a3fb577e 191int is_valid_psw(psw_t *psw);
70455a36 192int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
bb25b9ba 193int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
8c3f61e2 194int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
48a3e950
CH		 195int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
196int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
aba07508 197int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu);
953ed88d
TH		 198int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
199int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
5288fbf0
CB		 200
201/* implemented in sigp.c */
202int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
4953919f 203int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu);
5288fbf0
CB		 204
205/* implemented in kvm-s390.c */
fa576c58 206long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable);
e879892c 207int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr);
bc17de7c
EF		 208int kvm_s390_store_adtl_status_unloaded(struct kvm_vcpu *vcpu,
209 unsigned long addr);
e879892c 210int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
bc17de7c 211int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu *vcpu, unsigned long addr);
6852d7b6
DH		 212void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu);
213void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu);
49b99e1e
CB		 214void s390_vcpu_block(struct kvm_vcpu *vcpu);
215void s390_vcpu_unblock(struct kvm_vcpu *vcpu);
216void exit_sie(struct kvm_vcpu *vcpu);
217void exit_sie_sync(struct kvm_vcpu *vcpu);
b31605c1
DD		 218int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
219void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
220/* is cmma enabled */
221bool kvm_s390_cmma_enabled(struct kvm *kvm);
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
1b0462e5
HC		 231/**
232 * kvm_s390_inject_prog_cond - conditionally inject a program check
233 * @vcpu: virtual cpu
234 * @rc: original return/error code
235 *
236 * This function is supposed to be used after regular guest access functions
237 * failed, to conditionally inject a program check to a vcpu. The typical
238 * pattern would look like
239 *
240 * rc = write_guest(vcpu, addr, data, len);
241 * if (rc)
242 * return kvm_s390_inject_prog_cond(vcpu, rc);
243 *
244 * A negative return code from guest access functions implies an internal error
245 * like e.g. out of memory. In these cases no program check should be injected
246 * to the guest.
247 * A positive value implies that an exception happened while accessing a guest's
248 * memory. In this case all data belonging to the corresponding program check
249 * has been stored in vcpu->arch.pgm and can be injected with
250 * kvm_s390_inject_prog_irq().
251 *
252 * Returns: - the original @rc value if @rc was negative (internal error)
253 * - zero if @rc was already zero
254 * - zero or error code from injecting if @rc was positive
255 * (program check injected to @vcpu)
256 */
257static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc)
258{
259 if (rc <= 0)
260 return rc;
261 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
262}
263
383d0b05
JF		 264int s390int_to_s390irq(struct kvm_s390_interrupt *s390int,
265 struct kvm_s390_irq *s390irq);
266
3c038e6b 267/* implemented in interrupt.c */
9a022067 268int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop);
3c038e6b 269int psw_extint_disabled(struct kvm_vcpu *vcpu);
841b91c5 270void kvm_s390_destroy_adapters(struct kvm *kvm);
ea5f4969 271int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu);
84877d93 272extern struct kvm_device_ops kvm_flic_ops;
6cddd432
DH		 273int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu);
274void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu);
816c7667
JF		 275int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu,
276 void __user *buf, int len);
277int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu,
278 __u8 __user *buf, int len);
3c038e6b 279
27291e21
DH		 280/* implemented in guestdbg.c */
281void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);
282void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu);
283void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu);
284int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
285 struct kvm_guest_debug *dbg);
286void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu);
287void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu);
288void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu);
289
b0c632db 290#endif
Linux kernel - Deliverables
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