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KVM: s390: remove _bh locking from start_stop_lock
[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
CB		 20#include <linux/kvm_host.h>
21
22typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
23
78c4b59f
MM		 24/* declare vfacilities extern */
25extern unsigned long *vfacilities;
26
8f2abe6a
CB		 27int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
28
7feb6bb8
MM		 29/* Transactional Memory Execution related macros */
30#define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10))
7feb6bb8
MM		 31#define TDB_FORMAT1 1
32#define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
33
b0c632db
HC		 34#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
35do { \
36 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
37 d_args); \
38} while (0)
39
40#define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
41do { \
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,\
45 d_args); \
46} while (0)
ba5c1e9b 47
7a42fdc2 48static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu)
ba5c1e9b 49{
7a42fdc2 50 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOPPED;
ba5c1e9b
CO		 51}
52
e08b9637
CO		 53static inline int kvm_is_ucontrol(struct kvm *kvm)
54{
55#ifdef CONFIG_KVM_S390_UCONTROL
56 if (kvm->arch.gmap)
57 return 0;
58 return 1;
59#else
60 return 0;
61#endif
62}
8d26cf7b 63
fda902cb
MM		 64#define GUEST_PREFIX_SHIFT 13
65static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu)
66{
67 return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT;
68}
69
8d26cf7b
CB		 70static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
71{
fda902cb 72 vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
8d26cf7b 73 vcpu->arch.sie_block->ihcpu = 0xffff;
2c70fe44 74 kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
8d26cf7b
CB		 75}
76
b1c571a5
CH		 77static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
78{
0c29b229
CB		 79 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
80 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
b1c571a5
CH		 81
82 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
83}
84
85static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
86 u64 *address1, u64 *address2)
87{
0c29b229
CB		 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;
b1c571a5
CH		 92
93 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
94 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
95}
96
69d0d3a3
CB		 97static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
98{
ff7158b2
TH		 99 if (r1)
100 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
101 if (r2)
102 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
69d0d3a3
CB		 103}
104
b1c571a5
CH		 105static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
106{
0c29b229
CB		 107 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
108 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
b1c571a5 109 ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
0c29b229
CB		 110 /* The displacement is a 20bit _SIGNED_ value */
111 if (disp2 & 0x80000)
112 disp2+=0xfff00000;
b1c571a5 113
0c29b229 114 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
b1c571a5
CH		 115}
116
117static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu)
118{
0c29b229
CB		 119 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
120 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
b1c571a5
CH		 121
122 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
123}
124
ea828ebf
TH		 125/* Set the condition code in the guest program status word */
126static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
127{
128 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
129 vcpu->arch.sie_block->gpsw.mask |= cc << 44;
130}
131
6352e4d2
DH		 132/* are cpu states controlled by user space */
133static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
134{
135 return kvm->arch.user_cpu_state_ctrl != 0;
136}
137
ba5c1e9b 138int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
ca872302
CB		 139enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
140void kvm_s390_tasklet(unsigned long parm);
ba5c1e9b 141void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
48a3e950 142void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu);
2ed10cc1 143void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
67335e63 144void kvm_s390_clear_float_irqs(struct kvm *kvm);
db4a29cb
HC		 145int __must_check kvm_s390_inject_vm(struct kvm *kvm,
146 struct kvm_s390_interrupt *s390int);
147int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
148 struct kvm_s390_interrupt *s390int);
149int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
fa6b7fe9
CH		 150struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
151 u64 cr6, u64 schid);
2f32d4ea
CH		 152void kvm_s390_reinject_io_int(struct kvm *kvm,
153 struct kvm_s390_interrupt_info *inti);
841b91c5 154int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked);
453423dc
CB		 155
156/* implemented in priv.c */
a3fb577e 157int is_valid_psw(psw_t *psw);
70455a36 158int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
bb25b9ba 159int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
8c3f61e2 160int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
48a3e950
CH		 161int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
162int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
aba07508 163int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu);
953ed88d
TH		 164int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
165int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
5288fbf0
CB		 166
167/* implemented in sigp.c */
168int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
4953919f 169int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu);
5288fbf0
CB		 170
171/* implemented in kvm-s390.c */
fa576c58 172long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable);
e879892c
TH		 173int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr);
174int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
6852d7b6
DH		 175void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu);
176void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu);
49b99e1e
CB		 177void s390_vcpu_block(struct kvm_vcpu *vcpu);
178void s390_vcpu_unblock(struct kvm_vcpu *vcpu);
179void exit_sie(struct kvm_vcpu *vcpu);
180void exit_sie_sync(struct kvm_vcpu *vcpu);
b31605c1
DD		 181int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
182void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
183/* is cmma enabled */
184bool kvm_s390_cmma_enabled(struct kvm *kvm);
280ef0f1 185int test_vfacility(unsigned long nr);
b31605c1 186
e28acfea
CB		 187/* implemented in diag.c */
188int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
bcd84683
JF		 189/* implemented in interrupt.c */
190int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
191 struct kvm_s390_pgm_info *pgm_info);
e28acfea 192
1b0462e5
HC		 193/**
194 * kvm_s390_inject_prog_cond - conditionally inject a program check
195 * @vcpu: virtual cpu
196 * @rc: original return/error code
197 *
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
201 *
202 * rc = write_guest(vcpu, addr, data, len);
203 * if (rc)
204 * return kvm_s390_inject_prog_cond(vcpu, rc);
205 *
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
208 * to the guest.
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().
213 *
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)
218 */
219static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc)
220{
221 if (rc <= 0)
222 return rc;
223 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
224}
225
3c038e6b
DD		 226/* implemented in interrupt.c */
227int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
228int psw_extint_disabled(struct kvm_vcpu *vcpu);
841b91c5 229void kvm_s390_destroy_adapters(struct kvm *kvm);
4953919f 230int kvm_s390_si_ext_call_pending(struct kvm_vcpu *vcpu);
3c038e6b 231
27291e21
DH		 232/* implemented in guestdbg.c */
233void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);
234void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu);
235void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu);
236int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
237 struct kvm_guest_debug *dbg);
238void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu);
239void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu);
240void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu);
241
b0c632db 242#endif
Linux kernel - Deliverables
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