Commit | Line | Data |
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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 | |
23 | typedef 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...)\ |
31 | do { \ | |
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...)\ | |
37 | do { \ | |
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 | 44 | static 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 |
49 | static 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 |
61 | static 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 |
66 | static 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 |
73 | typedef u8 __bitwise ar_t; |
74 | ||
75 | static 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 | ||
86 | static 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 |
104 | static 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 | 112 | static 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 | 127 | static 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 */ |
139 | static 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 |
146 | static 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 | ||
6352e4d2 DH |
152 | /* are cpu states controlled by user space */ |
153 | static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm) | |
154 | { | |
155 | return kvm->arch.user_cpu_state_ctrl != 0; | |
156 | } | |
157 | ||
ba5c1e9b | 158 | int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); |
0e9c85a5 | 159 | void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu); |
ca872302 | 160 | enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); |
614aeab4 | 161 | int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); |
2ed10cc1 | 162 | void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu); |
67335e63 | 163 | void kvm_s390_clear_float_irqs(struct kvm *kvm); |
db4a29cb HC |
164 | int __must_check kvm_s390_inject_vm(struct kvm *kvm, |
165 | struct kvm_s390_interrupt *s390int); | |
166 | int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, | |
383d0b05 | 167 | struct kvm_s390_irq *irq); |
db4a29cb | 168 | int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); |
fa6b7fe9 CH |
169 | struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, |
170 | u64 cr6, u64 schid); | |
15462e37 DH |
171 | int kvm_s390_reinject_io_int(struct kvm *kvm, |
172 | struct kvm_s390_interrupt_info *inti); | |
841b91c5 | 173 | int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked); |
453423dc | 174 | |
04b41acd TH |
175 | /* implemented in intercept.c */ |
176 | void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilc); | |
177 | int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); | |
178 | ||
453423dc | 179 | /* implemented in priv.c */ |
a3fb577e | 180 | int is_valid_psw(psw_t *psw); |
70455a36 | 181 | int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); |
bb25b9ba | 182 | int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); |
8c3f61e2 | 183 | int kvm_s390_handle_01(struct kvm_vcpu *vcpu); |
48a3e950 CH |
184 | int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); |
185 | int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); | |
aba07508 | 186 | int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu); |
953ed88d TH |
187 | int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu); |
188 | int kvm_s390_handle_eb(struct kvm_vcpu *vcpu); | |
5288fbf0 CB |
189 | |
190 | /* implemented in sigp.c */ | |
191 | int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); | |
4953919f | 192 | int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu); |
5288fbf0 CB |
193 | |
194 | /* implemented in kvm-s390.c */ | |
fa576c58 | 195 | long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable); |
e879892c | 196 | int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); |
bc17de7c EF |
197 | int kvm_s390_store_adtl_status_unloaded(struct kvm_vcpu *vcpu, |
198 | unsigned long addr); | |
e879892c | 199 | int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); |
bc17de7c | 200 | int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu *vcpu, unsigned long addr); |
6852d7b6 DH |
201 | void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu); |
202 | void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu); | |
49b99e1e CB |
203 | void s390_vcpu_block(struct kvm_vcpu *vcpu); |
204 | void s390_vcpu_unblock(struct kvm_vcpu *vcpu); | |
205 | void exit_sie(struct kvm_vcpu *vcpu); | |
206 | void exit_sie_sync(struct kvm_vcpu *vcpu); | |
b31605c1 DD |
207 | int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); |
208 | void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu); | |
209 | /* is cmma enabled */ | |
210 | bool kvm_s390_cmma_enabled(struct kvm *kvm); | |
9d8d5786 MM |
211 | unsigned long kvm_s390_fac_list_mask_size(void); |
212 | extern unsigned long kvm_s390_fac_list_mask[]; | |
b31605c1 | 213 | |
e28acfea CB |
214 | /* implemented in diag.c */ |
215 | int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); | |
bcd84683 JF |
216 | /* implemented in interrupt.c */ |
217 | int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, | |
218 | struct kvm_s390_pgm_info *pgm_info); | |
e28acfea | 219 | |
1b0462e5 HC |
220 | /** |
221 | * kvm_s390_inject_prog_cond - conditionally inject a program check | |
222 | * @vcpu: virtual cpu | |
223 | * @rc: original return/error code | |
224 | * | |
225 | * This function is supposed to be used after regular guest access functions | |
226 | * failed, to conditionally inject a program check to a vcpu. The typical | |
227 | * pattern would look like | |
228 | * | |
229 | * rc = write_guest(vcpu, addr, data, len); | |
230 | * if (rc) | |
231 | * return kvm_s390_inject_prog_cond(vcpu, rc); | |
232 | * | |
233 | * A negative return code from guest access functions implies an internal error | |
234 | * like e.g. out of memory. In these cases no program check should be injected | |
235 | * to the guest. | |
236 | * A positive value implies that an exception happened while accessing a guest's | |
237 | * memory. In this case all data belonging to the corresponding program check | |
238 | * has been stored in vcpu->arch.pgm and can be injected with | |
239 | * kvm_s390_inject_prog_irq(). | |
240 | * | |
241 | * Returns: - the original @rc value if @rc was negative (internal error) | |
242 | * - zero if @rc was already zero | |
243 | * - zero or error code from injecting if @rc was positive | |
244 | * (program check injected to @vcpu) | |
245 | */ | |
246 | static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc) | |
247 | { | |
248 | if (rc <= 0) | |
249 | return rc; | |
250 | return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); | |
251 | } | |
252 | ||
383d0b05 JF |
253 | int s390int_to_s390irq(struct kvm_s390_interrupt *s390int, |
254 | struct kvm_s390_irq *s390irq); | |
255 | ||
3c038e6b | 256 | /* implemented in interrupt.c */ |
9a022067 | 257 | int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop); |
3c038e6b | 258 | int psw_extint_disabled(struct kvm_vcpu *vcpu); |
841b91c5 | 259 | void kvm_s390_destroy_adapters(struct kvm *kvm); |
ea5f4969 | 260 | int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu); |
84877d93 | 261 | extern struct kvm_device_ops kvm_flic_ops; |
6cddd432 DH |
262 | int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu); |
263 | void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu); | |
3c038e6b | 264 | |
27291e21 DH |
265 | /* implemented in guestdbg.c */ |
266 | void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu); | |
267 | void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu); | |
268 | void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu); | |
269 | int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, | |
270 | struct kvm_guest_debug *dbg); | |
271 | void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); | |
272 | void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); | |
273 | void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); | |
274 | ||
b0c632db | 275 | #endif |