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Commit | Line | Data |
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d809aa23 | 1 | // SPDX-License-Identifier: GPL-2.0 |
ba5c1e9b | 2 | /* |
a53c8fab | 3 | * handling kvm guest interrupts |
ba5c1e9b | 4 | * |
33b412ac | 5 | * Copyright IBM Corp. 2008, 2015 |
ba5c1e9b | 6 | * |
ba5c1e9b CO |
7 | * Author(s): Carsten Otte <cotte@de.ibm.com> |
8 | */ | |
9 | ||
ca872302 | 10 | #include <linux/interrupt.h> |
ba5c1e9b | 11 | #include <linux/kvm_host.h> |
cbb870c8 | 12 | #include <linux/hrtimer.h> |
84223598 | 13 | #include <linux/mmu_context.h> |
3cd61299 | 14 | #include <linux/signal.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
383d0b05 | 16 | #include <linux/bitmap.h> |
94aa033e | 17 | #include <linux/vmalloc.h> |
cbb870c8 | 18 | #include <asm/asm-offsets.h> |
33b412ac | 19 | #include <asm/dis.h> |
7c0f6ba6 | 20 | #include <linux/uaccess.h> |
ea5f4969 | 21 | #include <asm/sclp.h> |
6d3da241 | 22 | #include <asm/isc.h> |
1e133ab2 | 23 | #include <asm/gmap.h> |
0319dae6 | 24 | #include <asm/switch_to.h> |
ff5dc149 | 25 | #include <asm/nmi.h> |
ba5c1e9b CO |
26 | #include "kvm-s390.h" |
27 | #include "gaccess.h" | |
ade38c31 | 28 | #include "trace-s390.h" |
ba5c1e9b | 29 | |
44c6ca3d | 30 | #define PFAULT_INIT 0x0600 |
60f90a14 JF |
31 | #define PFAULT_DONE 0x0680 |
32 | #define VIRTIO_PARAM 0x0d00 | |
d8346b7d | 33 | |
a5bd7647 ED |
34 | /* handle external calls via sigp interpretation facility */ |
35 | static int sca_ext_call_pending(struct kvm_vcpu *vcpu, int *src_id) | |
36 | { | |
7d43bafc ED |
37 | int c, scn; |
38 | ||
2c1bb2be DH |
39 | if (!(atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_ECALL_PEND)) |
40 | return 0; | |
41 | ||
a6940674 | 42 | BUG_ON(!kvm_s390_use_sca_entries()); |
5e044315 | 43 | read_lock(&vcpu->kvm->arch.sca_lock); |
7d43bafc ED |
44 | if (vcpu->kvm->arch.use_esca) { |
45 | struct esca_block *sca = vcpu->kvm->arch.sca; | |
46 | union esca_sigp_ctrl sigp_ctrl = | |
47 | sca->cpu[vcpu->vcpu_id].sigp_ctrl; | |
48 | ||
49 | c = sigp_ctrl.c; | |
50 | scn = sigp_ctrl.scn; | |
51 | } else { | |
52 | struct bsca_block *sca = vcpu->kvm->arch.sca; | |
53 | union bsca_sigp_ctrl sigp_ctrl = | |
54 | sca->cpu[vcpu->vcpu_id].sigp_ctrl; | |
55 | ||
56 | c = sigp_ctrl.c; | |
57 | scn = sigp_ctrl.scn; | |
58 | } | |
5e044315 | 59 | read_unlock(&vcpu->kvm->arch.sca_lock); |
a5bd7647 ED |
60 | |
61 | if (src_id) | |
7d43bafc | 62 | *src_id = scn; |
a5bd7647 | 63 | |
2c1bb2be | 64 | return c; |
a5bd7647 ED |
65 | } |
66 | ||
67 | static int sca_inject_ext_call(struct kvm_vcpu *vcpu, int src_id) | |
68 | { | |
bc784cce | 69 | int expect, rc; |
a5bd7647 | 70 | |
a6940674 | 71 | BUG_ON(!kvm_s390_use_sca_entries()); |
5e044315 | 72 | read_lock(&vcpu->kvm->arch.sca_lock); |
7d43bafc ED |
73 | if (vcpu->kvm->arch.use_esca) { |
74 | struct esca_block *sca = vcpu->kvm->arch.sca; | |
75 | union esca_sigp_ctrl *sigp_ctrl = | |
76 | &(sca->cpu[vcpu->vcpu_id].sigp_ctrl); | |
77 | union esca_sigp_ctrl new_val = {0}, old_val = *sigp_ctrl; | |
78 | ||
79 | new_val.scn = src_id; | |
80 | new_val.c = 1; | |
81 | old_val.c = 0; | |
82 | ||
83 | expect = old_val.value; | |
84 | rc = cmpxchg(&sigp_ctrl->value, old_val.value, new_val.value); | |
85 | } else { | |
86 | struct bsca_block *sca = vcpu->kvm->arch.sca; | |
87 | union bsca_sigp_ctrl *sigp_ctrl = | |
88 | &(sca->cpu[vcpu->vcpu_id].sigp_ctrl); | |
89 | union bsca_sigp_ctrl new_val = {0}, old_val = *sigp_ctrl; | |
bc784cce | 90 | |
7d43bafc ED |
91 | new_val.scn = src_id; |
92 | new_val.c = 1; | |
93 | old_val.c = 0; | |
94 | ||
95 | expect = old_val.value; | |
96 | rc = cmpxchg(&sigp_ctrl->value, old_val.value, new_val.value); | |
97 | } | |
5e044315 | 98 | read_unlock(&vcpu->kvm->arch.sca_lock); |
bc784cce ED |
99 | |
100 | if (rc != expect) { | |
a5bd7647 ED |
101 | /* another external call is pending */ |
102 | return -EBUSY; | |
103 | } | |
104 | atomic_or(CPUSTAT_ECALL_PEND, &vcpu->arch.sie_block->cpuflags); | |
105 | return 0; | |
106 | } | |
107 | ||
108 | static void sca_clear_ext_call(struct kvm_vcpu *vcpu) | |
109 | { | |
a5bd7647 | 110 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
7d43bafc | 111 | int rc, expect; |
a5bd7647 | 112 | |
a6940674 DH |
113 | if (!kvm_s390_use_sca_entries()) |
114 | return; | |
a5bd7647 | 115 | atomic_andnot(CPUSTAT_ECALL_PEND, li->cpuflags); |
5e044315 | 116 | read_lock(&vcpu->kvm->arch.sca_lock); |
7d43bafc ED |
117 | if (vcpu->kvm->arch.use_esca) { |
118 | struct esca_block *sca = vcpu->kvm->arch.sca; | |
119 | union esca_sigp_ctrl *sigp_ctrl = | |
120 | &(sca->cpu[vcpu->vcpu_id].sigp_ctrl); | |
121 | union esca_sigp_ctrl old = *sigp_ctrl; | |
122 | ||
123 | expect = old.value; | |
124 | rc = cmpxchg(&sigp_ctrl->value, old.value, 0); | |
125 | } else { | |
126 | struct bsca_block *sca = vcpu->kvm->arch.sca; | |
127 | union bsca_sigp_ctrl *sigp_ctrl = | |
128 | &(sca->cpu[vcpu->vcpu_id].sigp_ctrl); | |
129 | union bsca_sigp_ctrl old = *sigp_ctrl; | |
130 | ||
131 | expect = old.value; | |
132 | rc = cmpxchg(&sigp_ctrl->value, old.value, 0); | |
133 | } | |
5e044315 | 134 | read_unlock(&vcpu->kvm->arch.sca_lock); |
7d43bafc | 135 | WARN_ON(rc != expect); /* cannot clear? */ |
a5bd7647 ED |
136 | } |
137 | ||
3c038e6b | 138 | int psw_extint_disabled(struct kvm_vcpu *vcpu) |
ba5c1e9b CO |
139 | { |
140 | return !(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_EXT); | |
141 | } | |
142 | ||
d8346b7d CH |
143 | static int psw_ioint_disabled(struct kvm_vcpu *vcpu) |
144 | { | |
145 | return !(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_IO); | |
146 | } | |
147 | ||
48a3e950 CH |
148 | static int psw_mchk_disabled(struct kvm_vcpu *vcpu) |
149 | { | |
150 | return !(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_MCHECK); | |
151 | } | |
152 | ||
ba5c1e9b CO |
153 | static int psw_interrupts_disabled(struct kvm_vcpu *vcpu) |
154 | { | |
fee0e0fd DH |
155 | return psw_extint_disabled(vcpu) && |
156 | psw_ioint_disabled(vcpu) && | |
157 | psw_mchk_disabled(vcpu); | |
ba5c1e9b CO |
158 | } |
159 | ||
bb78c5ec DH |
160 | static int ckc_interrupts_enabled(struct kvm_vcpu *vcpu) |
161 | { | |
162 | if (psw_extint_disabled(vcpu) || | |
163 | !(vcpu->arch.sie_block->gcr[0] & 0x800ul)) | |
164 | return 0; | |
f71d0dc5 DH |
165 | if (guestdbg_enabled(vcpu) && guestdbg_sstep_enabled(vcpu)) |
166 | /* No timer interrupts when single stepping */ | |
167 | return 0; | |
bb78c5ec DH |
168 | return 1; |
169 | } | |
170 | ||
b4aec925 DH |
171 | static int ckc_irq_pending(struct kvm_vcpu *vcpu) |
172 | { | |
60417fcc | 173 | if (vcpu->arch.sie_block->ckc >= kvm_s390_get_tod_clock_fast(vcpu->kvm)) |
b4aec925 DH |
174 | return 0; |
175 | return ckc_interrupts_enabled(vcpu); | |
176 | } | |
177 | ||
178 | static int cpu_timer_interrupts_enabled(struct kvm_vcpu *vcpu) | |
179 | { | |
180 | return !psw_extint_disabled(vcpu) && | |
181 | (vcpu->arch.sie_block->gcr[0] & 0x400ul); | |
182 | } | |
183 | ||
184 | static int cpu_timer_irq_pending(struct kvm_vcpu *vcpu) | |
185 | { | |
4287f247 DH |
186 | if (!cpu_timer_interrupts_enabled(vcpu)) |
187 | return 0; | |
188 | return kvm_s390_get_cpu_timer(vcpu) >> 63; | |
b4aec925 DH |
189 | } |
190 | ||
6d3da241 | 191 | static inline int is_ioirq(unsigned long irq_type) |
79fd50c6 | 192 | { |
6d3da241 JF |
193 | return ((irq_type >= IRQ_PEND_IO_ISC_0) && |
194 | (irq_type <= IRQ_PEND_IO_ISC_7)); | |
195 | } | |
79fd50c6 | 196 | |
6d3da241 JF |
197 | static uint64_t isc_to_isc_bits(int isc) |
198 | { | |
79fd50c6 CH |
199 | return (0x80 >> isc) << 24; |
200 | } | |
201 | ||
6d3da241 | 202 | static inline u8 int_word_to_isc(u32 int_word) |
ba5c1e9b | 203 | { |
6d3da241 JF |
204 | return (int_word & 0x38000000) >> 27; |
205 | } | |
206 | ||
5f94c58e | 207 | static inline unsigned long pending_irqs(struct kvm_vcpu *vcpu) |
6d3da241 | 208 | { |
5f94c58e DH |
209 | return vcpu->kvm->arch.float_int.pending_irqs | |
210 | vcpu->arch.local_int.pending_irqs; | |
383d0b05 JF |
211 | } |
212 | ||
ee739f4b MM |
213 | static inline int isc_to_irq_type(unsigned long isc) |
214 | { | |
215 | return IRQ_PEND_IO_ISC_0 + isc; | |
216 | } | |
217 | ||
218 | static inline int irq_type_to_isc(unsigned long irq_type) | |
219 | { | |
220 | return irq_type - IRQ_PEND_IO_ISC_0; | |
221 | } | |
222 | ||
6d3da241 JF |
223 | static unsigned long disable_iscs(struct kvm_vcpu *vcpu, |
224 | unsigned long active_mask) | |
225 | { | |
226 | int i; | |
227 | ||
228 | for (i = 0; i <= MAX_ISC; i++) | |
229 | if (!(vcpu->arch.sie_block->gcr[6] & isc_to_isc_bits(i))) | |
ee739f4b | 230 | active_mask &= ~(1UL << (isc_to_irq_type(i))); |
6d3da241 JF |
231 | |
232 | return active_mask; | |
233 | } | |
234 | ||
235 | static unsigned long deliverable_irqs(struct kvm_vcpu *vcpu) | |
383d0b05 | 236 | { |
6d3da241 JF |
237 | unsigned long active_mask; |
238 | ||
5f94c58e | 239 | active_mask = pending_irqs(vcpu); |
ffeca0ae JF |
240 | if (!active_mask) |
241 | return 0; | |
383d0b05 JF |
242 | |
243 | if (psw_extint_disabled(vcpu)) | |
244 | active_mask &= ~IRQ_PEND_EXT_MASK; | |
6d3da241 JF |
245 | if (psw_ioint_disabled(vcpu)) |
246 | active_mask &= ~IRQ_PEND_IO_MASK; | |
247 | else | |
248 | active_mask = disable_iscs(vcpu, active_mask); | |
383d0b05 JF |
249 | if (!(vcpu->arch.sie_block->gcr[0] & 0x2000ul)) |
250 | __clear_bit(IRQ_PEND_EXT_EXTERNAL, &active_mask); | |
251 | if (!(vcpu->arch.sie_block->gcr[0] & 0x4000ul)) | |
252 | __clear_bit(IRQ_PEND_EXT_EMERGENCY, &active_mask); | |
253 | if (!(vcpu->arch.sie_block->gcr[0] & 0x800ul)) | |
254 | __clear_bit(IRQ_PEND_EXT_CLOCK_COMP, &active_mask); | |
255 | if (!(vcpu->arch.sie_block->gcr[0] & 0x400ul)) | |
256 | __clear_bit(IRQ_PEND_EXT_CPU_TIMER, &active_mask); | |
6d3da241 JF |
257 | if (!(vcpu->arch.sie_block->gcr[0] & 0x200ul)) |
258 | __clear_bit(IRQ_PEND_EXT_SERVICE, &active_mask); | |
383d0b05 JF |
259 | if (psw_mchk_disabled(vcpu)) |
260 | active_mask &= ~IRQ_PEND_MCHK_MASK; | |
4d62fcc0 QH |
261 | /* |
262 | * Check both floating and local interrupt's cr14 because | |
263 | * bit IRQ_PEND_MCHK_REP could be set in both cases. | |
264 | */ | |
6d3da241 | 265 | if (!(vcpu->arch.sie_block->gcr[14] & |
4d62fcc0 QH |
266 | (vcpu->kvm->arch.float_int.mchk.cr14 | |
267 | vcpu->arch.local_int.irq.mchk.cr14))) | |
6d3da241 | 268 | __clear_bit(IRQ_PEND_MCHK_REP, &active_mask); |
383d0b05 | 269 | |
6cddd432 DH |
270 | /* |
271 | * STOP irqs will never be actively delivered. They are triggered via | |
272 | * intercept requests and cleared when the stop intercept is performed. | |
273 | */ | |
274 | __clear_bit(IRQ_PEND_SIGP_STOP, &active_mask); | |
275 | ||
383d0b05 JF |
276 | return active_mask; |
277 | } | |
278 | ||
ba5c1e9b CO |
279 | static void __set_cpu_idle(struct kvm_vcpu *vcpu) |
280 | { | |
805de8f4 | 281 | atomic_or(CPUSTAT_WAIT, &vcpu->arch.sie_block->cpuflags); |
ba5c1e9b CO |
282 | set_bit(vcpu->vcpu_id, vcpu->arch.local_int.float_int->idle_mask); |
283 | } | |
284 | ||
285 | static void __unset_cpu_idle(struct kvm_vcpu *vcpu) | |
286 | { | |
805de8f4 | 287 | atomic_andnot(CPUSTAT_WAIT, &vcpu->arch.sie_block->cpuflags); |
ba5c1e9b CO |
288 | clear_bit(vcpu->vcpu_id, vcpu->arch.local_int.float_int->idle_mask); |
289 | } | |
290 | ||
291 | static void __reset_intercept_indicators(struct kvm_vcpu *vcpu) | |
292 | { | |
805de8f4 PZ |
293 | atomic_andnot(CPUSTAT_IO_INT | CPUSTAT_EXT_INT | CPUSTAT_STOP_INT, |
294 | &vcpu->arch.sie_block->cpuflags); | |
ba5c1e9b | 295 | vcpu->arch.sie_block->lctl = 0x0000; |
27291e21 DH |
296 | vcpu->arch.sie_block->ictl &= ~(ICTL_LPSW | ICTL_STCTL | ICTL_PINT); |
297 | ||
298 | if (guestdbg_enabled(vcpu)) { | |
299 | vcpu->arch.sie_block->lctl |= (LCTL_CR0 | LCTL_CR9 | | |
300 | LCTL_CR10 | LCTL_CR11); | |
301 | vcpu->arch.sie_block->ictl |= (ICTL_STCTL | ICTL_PINT); | |
302 | } | |
ba5c1e9b CO |
303 | } |
304 | ||
305 | static void __set_cpuflag(struct kvm_vcpu *vcpu, u32 flag) | |
306 | { | |
805de8f4 | 307 | atomic_or(flag, &vcpu->arch.sie_block->cpuflags); |
ba5c1e9b CO |
308 | } |
309 | ||
6d3da241 JF |
310 | static void set_intercept_indicators_io(struct kvm_vcpu *vcpu) |
311 | { | |
5f94c58e | 312 | if (!(pending_irqs(vcpu) & IRQ_PEND_IO_MASK)) |
6d3da241 JF |
313 | return; |
314 | else if (psw_ioint_disabled(vcpu)) | |
315 | __set_cpuflag(vcpu, CPUSTAT_IO_INT); | |
316 | else | |
317 | vcpu->arch.sie_block->lctl |= LCTL_CR6; | |
318 | } | |
319 | ||
383d0b05 JF |
320 | static void set_intercept_indicators_ext(struct kvm_vcpu *vcpu) |
321 | { | |
5f94c58e | 322 | if (!(pending_irqs(vcpu) & IRQ_PEND_EXT_MASK)) |
383d0b05 JF |
323 | return; |
324 | if (psw_extint_disabled(vcpu)) | |
325 | __set_cpuflag(vcpu, CPUSTAT_EXT_INT); | |
326 | else | |
327 | vcpu->arch.sie_block->lctl |= LCTL_CR0; | |
328 | } | |
329 | ||
330 | static void set_intercept_indicators_mchk(struct kvm_vcpu *vcpu) | |
331 | { | |
5f94c58e | 332 | if (!(pending_irqs(vcpu) & IRQ_PEND_MCHK_MASK)) |
383d0b05 JF |
333 | return; |
334 | if (psw_mchk_disabled(vcpu)) | |
335 | vcpu->arch.sie_block->ictl |= ICTL_LPSW; | |
336 | else | |
337 | vcpu->arch.sie_block->lctl |= LCTL_CR14; | |
338 | } | |
339 | ||
6cddd432 DH |
340 | static void set_intercept_indicators_stop(struct kvm_vcpu *vcpu) |
341 | { | |
342 | if (kvm_s390_is_stop_irq_pending(vcpu)) | |
343 | __set_cpuflag(vcpu, CPUSTAT_STOP_INT); | |
344 | } | |
345 | ||
6d3da241 JF |
346 | /* Set interception request for non-deliverable interrupts */ |
347 | static void set_intercept_indicators(struct kvm_vcpu *vcpu) | |
383d0b05 | 348 | { |
6d3da241 | 349 | set_intercept_indicators_io(vcpu); |
383d0b05 JF |
350 | set_intercept_indicators_ext(vcpu); |
351 | set_intercept_indicators_mchk(vcpu); | |
6cddd432 | 352 | set_intercept_indicators_stop(vcpu); |
383d0b05 JF |
353 | } |
354 | ||
0fb97abe JF |
355 | static int __must_check __deliver_cpu_timer(struct kvm_vcpu *vcpu) |
356 | { | |
383d0b05 | 357 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
0fb97abe JF |
358 | int rc; |
359 | ||
360 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_INT_CPU_TIMER, | |
361 | 0, 0); | |
362 | ||
363 | rc = put_guest_lc(vcpu, EXT_IRQ_CPU_TIMER, | |
364 | (u16 *)__LC_EXT_INT_CODE); | |
467fc298 | 365 | rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR); |
0fb97abe JF |
366 | rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW, |
367 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
368 | rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, | |
369 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
383d0b05 | 370 | clear_bit(IRQ_PEND_EXT_CPU_TIMER, &li->pending_irqs); |
99e20009 | 371 | return rc ? -EFAULT : 0; |
0fb97abe JF |
372 | } |
373 | ||
374 | static int __must_check __deliver_ckc(struct kvm_vcpu *vcpu) | |
375 | { | |
383d0b05 | 376 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
0fb97abe JF |
377 | int rc; |
378 | ||
379 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_INT_CLOCK_COMP, | |
380 | 0, 0); | |
381 | ||
382 | rc = put_guest_lc(vcpu, EXT_IRQ_CLK_COMP, | |
383 | (u16 __user *)__LC_EXT_INT_CODE); | |
467fc298 | 384 | rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR); |
0fb97abe JF |
385 | rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW, |
386 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
387 | rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, | |
388 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
383d0b05 | 389 | clear_bit(IRQ_PEND_EXT_CLOCK_COMP, &li->pending_irqs); |
99e20009 | 390 | return rc ? -EFAULT : 0; |
0fb97abe JF |
391 | } |
392 | ||
383d0b05 | 393 | static int __must_check __deliver_pfault_init(struct kvm_vcpu *vcpu) |
0fb97abe | 394 | { |
383d0b05 JF |
395 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
396 | struct kvm_s390_ext_info ext; | |
0fb97abe JF |
397 | int rc; |
398 | ||
383d0b05 JF |
399 | spin_lock(&li->lock); |
400 | ext = li->irq.ext; | |
401 | clear_bit(IRQ_PEND_PFAULT_INIT, &li->pending_irqs); | |
402 | li->irq.ext.ext_params2 = 0; | |
403 | spin_unlock(&li->lock); | |
404 | ||
3f24ba15 CB |
405 | VCPU_EVENT(vcpu, 4, "deliver: pfault init token 0x%llx", |
406 | ext.ext_params2); | |
0fb97abe JF |
407 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, |
408 | KVM_S390_INT_PFAULT_INIT, | |
383d0b05 | 409 | 0, ext.ext_params2); |
0fb97abe JF |
410 | |
411 | rc = put_guest_lc(vcpu, EXT_IRQ_CP_SERVICE, (u16 *) __LC_EXT_INT_CODE); | |
412 | rc |= put_guest_lc(vcpu, PFAULT_INIT, (u16 *) __LC_EXT_CPU_ADDR); | |
413 | rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW, | |
414 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
415 | rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, | |
416 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
383d0b05 | 417 | rc |= put_guest_lc(vcpu, ext.ext_params2, (u64 *) __LC_EXT_PARAMS2); |
99e20009 | 418 | return rc ? -EFAULT : 0; |
0fb97abe JF |
419 | } |
420 | ||
d6404ded DH |
421 | static int __write_machine_check(struct kvm_vcpu *vcpu, |
422 | struct kvm_s390_mchk_info *mchk) | |
423 | { | |
424 | unsigned long ext_sa_addr; | |
4e0b1ab7 | 425 | unsigned long lc; |
0319dae6 | 426 | freg_t fprs[NUM_FPRS]; |
ff5dc149 | 427 | union mci mci; |
d6404ded DH |
428 | int rc; |
429 | ||
ff5dc149 | 430 | mci.val = mchk->mcic; |
31d8b8d4 | 431 | /* take care of lazy register loading */ |
0319dae6 DH |
432 | save_fpu_regs(); |
433 | save_access_regs(vcpu->run->s.regs.acrs); | |
80248559 CB |
434 | if (MACHINE_HAS_GS && vcpu->arch.gs_enabled) |
435 | save_gs_cb(current->thread.gs_cb); | |
0319dae6 | 436 | |
d6404ded | 437 | /* Extended save area */ |
916cda1a MS |
438 | rc = read_guest_lc(vcpu, __LC_MCESAD, &ext_sa_addr, |
439 | sizeof(unsigned long)); | |
4e0b1ab7 FZ |
440 | /* Only bits 0 through 63-LC are used for address formation */ |
441 | lc = ext_sa_addr & MCESA_LC_MASK; | |
442 | if (test_kvm_facility(vcpu->kvm, 133)) { | |
443 | switch (lc) { | |
444 | case 0: | |
445 | case 10: | |
446 | ext_sa_addr &= ~0x3ffUL; | |
447 | break; | |
448 | case 11: | |
449 | ext_sa_addr &= ~0x7ffUL; | |
450 | break; | |
451 | case 12: | |
452 | ext_sa_addr &= ~0xfffUL; | |
453 | break; | |
454 | default: | |
455 | ext_sa_addr = 0; | |
456 | break; | |
457 | } | |
458 | } else { | |
459 | ext_sa_addr &= ~0x3ffUL; | |
460 | } | |
461 | ||
ff5dc149 DH |
462 | if (!rc && mci.vr && ext_sa_addr && test_kvm_facility(vcpu->kvm, 129)) { |
463 | if (write_guest_abs(vcpu, ext_sa_addr, vcpu->run->s.regs.vrs, | |
464 | 512)) | |
465 | mci.vr = 0; | |
466 | } else { | |
467 | mci.vr = 0; | |
468 | } | |
4e0b1ab7 FZ |
469 | if (!rc && mci.gs && ext_sa_addr && test_kvm_facility(vcpu->kvm, 133) |
470 | && (lc == 11 || lc == 12)) { | |
471 | if (write_guest_abs(vcpu, ext_sa_addr + 1024, | |
472 | &vcpu->run->s.regs.gscb, 32)) | |
473 | mci.gs = 0; | |
474 | } else { | |
475 | mci.gs = 0; | |
476 | } | |
d6404ded DH |
477 | |
478 | /* General interruption information */ | |
0319dae6 | 479 | rc |= put_guest_lc(vcpu, 1, (u8 __user *) __LC_AR_MODE_ID); |
d6404ded DH |
480 | rc |= write_guest_lc(vcpu, __LC_MCK_OLD_PSW, |
481 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
482 | rc |= read_guest_lc(vcpu, __LC_MCK_NEW_PSW, | |
483 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
ff5dc149 | 484 | rc |= put_guest_lc(vcpu, mci.val, (u64 __user *) __LC_MCCK_CODE); |
d6404ded DH |
485 | |
486 | /* Register-save areas */ | |
0319dae6 DH |
487 | if (MACHINE_HAS_VX) { |
488 | convert_vx_to_fp(fprs, (__vector128 *) vcpu->run->s.regs.vrs); | |
489 | rc |= write_guest_lc(vcpu, __LC_FPREGS_SAVE_AREA, fprs, 128); | |
490 | } else { | |
491 | rc |= write_guest_lc(vcpu, __LC_FPREGS_SAVE_AREA, | |
492 | vcpu->run->s.regs.fprs, 128); | |
493 | } | |
494 | rc |= write_guest_lc(vcpu, __LC_GPREGS_SAVE_AREA, | |
495 | vcpu->run->s.regs.gprs, 128); | |
496 | rc |= put_guest_lc(vcpu, current->thread.fpu.fpc, | |
497 | (u32 __user *) __LC_FP_CREG_SAVE_AREA); | |
498 | rc |= put_guest_lc(vcpu, vcpu->arch.sie_block->todpr, | |
499 | (u32 __user *) __LC_TOD_PROGREG_SAVE_AREA); | |
500 | rc |= put_guest_lc(vcpu, kvm_s390_get_cpu_timer(vcpu), | |
501 | (u64 __user *) __LC_CPU_TIMER_SAVE_AREA); | |
502 | rc |= put_guest_lc(vcpu, vcpu->arch.sie_block->ckc >> 8, | |
503 | (u64 __user *) __LC_CLOCK_COMP_SAVE_AREA); | |
504 | rc |= write_guest_lc(vcpu, __LC_AREGS_SAVE_AREA, | |
505 | &vcpu->run->s.regs.acrs, 64); | |
506 | rc |= write_guest_lc(vcpu, __LC_CREGS_SAVE_AREA, | |
507 | &vcpu->arch.sie_block->gcr, 128); | |
d6404ded DH |
508 | |
509 | /* Extended interruption information */ | |
8953fb08 DH |
510 | rc |= put_guest_lc(vcpu, mchk->ext_damage_code, |
511 | (u32 __user *) __LC_EXT_DAMAGE_CODE); | |
d6404ded DH |
512 | rc |= put_guest_lc(vcpu, mchk->failing_storage_address, |
513 | (u64 __user *) __LC_MCCK_FAIL_STOR_ADDR); | |
514 | rc |= write_guest_lc(vcpu, __LC_PSW_SAVE_AREA, &mchk->fixed_logout, | |
515 | sizeof(mchk->fixed_logout)); | |
516 | return rc ? -EFAULT : 0; | |
517 | } | |
518 | ||
383d0b05 | 519 | static int __must_check __deliver_machine_check(struct kvm_vcpu *vcpu) |
0fb97abe | 520 | { |
6d3da241 | 521 | struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int; |
383d0b05 | 522 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
6d3da241 | 523 | struct kvm_s390_mchk_info mchk = {}; |
6d3da241 JF |
524 | int deliver = 0; |
525 | int rc = 0; | |
0fb97abe | 526 | |
6d3da241 | 527 | spin_lock(&fi->lock); |
383d0b05 | 528 | spin_lock(&li->lock); |
6d3da241 JF |
529 | if (test_bit(IRQ_PEND_MCHK_EX, &li->pending_irqs) || |
530 | test_bit(IRQ_PEND_MCHK_REP, &li->pending_irqs)) { | |
531 | /* | |
532 | * If there was an exigent machine check pending, then any | |
533 | * repressible machine checks that might have been pending | |
534 | * are indicated along with it, so always clear bits for | |
535 | * repressible and exigent interrupts | |
536 | */ | |
537 | mchk = li->irq.mchk; | |
538 | clear_bit(IRQ_PEND_MCHK_EX, &li->pending_irqs); | |
539 | clear_bit(IRQ_PEND_MCHK_REP, &li->pending_irqs); | |
540 | memset(&li->irq.mchk, 0, sizeof(mchk)); | |
541 | deliver = 1; | |
542 | } | |
383d0b05 | 543 | /* |
6d3da241 JF |
544 | * We indicate floating repressible conditions along with |
545 | * other pending conditions. Channel Report Pending and Channel | |
546 | * Subsystem damage are the only two and and are indicated by | |
547 | * bits in mcic and masked in cr14. | |
383d0b05 | 548 | */ |
6d3da241 JF |
549 | if (test_and_clear_bit(IRQ_PEND_MCHK_REP, &fi->pending_irqs)) { |
550 | mchk.mcic |= fi->mchk.mcic; | |
551 | mchk.cr14 |= fi->mchk.cr14; | |
552 | memset(&fi->mchk, 0, sizeof(mchk)); | |
553 | deliver = 1; | |
554 | } | |
383d0b05 | 555 | spin_unlock(&li->lock); |
6d3da241 | 556 | spin_unlock(&fi->lock); |
383d0b05 | 557 | |
6d3da241 | 558 | if (deliver) { |
3f24ba15 | 559 | VCPU_EVENT(vcpu, 3, "deliver: machine check mcic 0x%llx", |
6d3da241 JF |
560 | mchk.mcic); |
561 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, | |
562 | KVM_S390_MCHK, | |
563 | mchk.cr14, mchk.mcic); | |
d6404ded | 564 | rc = __write_machine_check(vcpu, &mchk); |
6d3da241 | 565 | } |
d6404ded | 566 | return rc; |
0fb97abe JF |
567 | } |
568 | ||
569 | static int __must_check __deliver_restart(struct kvm_vcpu *vcpu) | |
570 | { | |
383d0b05 | 571 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
0fb97abe JF |
572 | int rc; |
573 | ||
3f24ba15 | 574 | VCPU_EVENT(vcpu, 3, "%s", "deliver: cpu restart"); |
0fb97abe JF |
575 | vcpu->stat.deliver_restart_signal++; |
576 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_RESTART, 0, 0); | |
577 | ||
578 | rc = write_guest_lc(vcpu, | |
c667aeac | 579 | offsetof(struct lowcore, restart_old_psw), |
0fb97abe | 580 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); |
c667aeac | 581 | rc |= read_guest_lc(vcpu, offsetof(struct lowcore, restart_psw), |
0fb97abe | 582 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); |
383d0b05 | 583 | clear_bit(IRQ_PEND_RESTART, &li->pending_irqs); |
99e20009 | 584 | return rc ? -EFAULT : 0; |
0fb97abe JF |
585 | } |
586 | ||
383d0b05 | 587 | static int __must_check __deliver_set_prefix(struct kvm_vcpu *vcpu) |
0fb97abe | 588 | { |
383d0b05 JF |
589 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
590 | struct kvm_s390_prefix_info prefix; | |
591 | ||
592 | spin_lock(&li->lock); | |
593 | prefix = li->irq.prefix; | |
594 | li->irq.prefix.address = 0; | |
595 | clear_bit(IRQ_PEND_SET_PREFIX, &li->pending_irqs); | |
596 | spin_unlock(&li->lock); | |
0fb97abe | 597 | |
0fb97abe JF |
598 | vcpu->stat.deliver_prefix_signal++; |
599 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, | |
600 | KVM_S390_SIGP_SET_PREFIX, | |
383d0b05 | 601 | prefix.address, 0); |
0fb97abe | 602 | |
383d0b05 | 603 | kvm_s390_set_prefix(vcpu, prefix.address); |
0fb97abe JF |
604 | return 0; |
605 | } | |
606 | ||
383d0b05 | 607 | static int __must_check __deliver_emergency_signal(struct kvm_vcpu *vcpu) |
0fb97abe | 608 | { |
383d0b05 | 609 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
0fb97abe | 610 | int rc; |
383d0b05 JF |
611 | int cpu_addr; |
612 | ||
613 | spin_lock(&li->lock); | |
614 | cpu_addr = find_first_bit(li->sigp_emerg_pending, KVM_MAX_VCPUS); | |
615 | clear_bit(cpu_addr, li->sigp_emerg_pending); | |
616 | if (bitmap_empty(li->sigp_emerg_pending, KVM_MAX_VCPUS)) | |
617 | clear_bit(IRQ_PEND_EXT_EMERGENCY, &li->pending_irqs); | |
618 | spin_unlock(&li->lock); | |
0fb97abe | 619 | |
3f24ba15 | 620 | VCPU_EVENT(vcpu, 4, "%s", "deliver: sigp emerg"); |
0fb97abe | 621 | vcpu->stat.deliver_emergency_signal++; |
383d0b05 JF |
622 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_INT_EMERGENCY, |
623 | cpu_addr, 0); | |
0fb97abe JF |
624 | |
625 | rc = put_guest_lc(vcpu, EXT_IRQ_EMERGENCY_SIG, | |
626 | (u16 *)__LC_EXT_INT_CODE); | |
383d0b05 | 627 | rc |= put_guest_lc(vcpu, cpu_addr, (u16 *)__LC_EXT_CPU_ADDR); |
0fb97abe JF |
628 | rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW, |
629 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
630 | rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, | |
631 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
99e20009 | 632 | return rc ? -EFAULT : 0; |
0fb97abe JF |
633 | } |
634 | ||
383d0b05 | 635 | static int __must_check __deliver_external_call(struct kvm_vcpu *vcpu) |
0fb97abe | 636 | { |
383d0b05 JF |
637 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
638 | struct kvm_s390_extcall_info extcall; | |
0fb97abe JF |
639 | int rc; |
640 | ||
383d0b05 JF |
641 | spin_lock(&li->lock); |
642 | extcall = li->irq.extcall; | |
643 | li->irq.extcall.code = 0; | |
644 | clear_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs); | |
645 | spin_unlock(&li->lock); | |
646 | ||
3f24ba15 | 647 | VCPU_EVENT(vcpu, 4, "%s", "deliver: sigp ext call"); |
0fb97abe JF |
648 | vcpu->stat.deliver_external_call++; |
649 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, | |
650 | KVM_S390_INT_EXTERNAL_CALL, | |
383d0b05 | 651 | extcall.code, 0); |
0fb97abe JF |
652 | |
653 | rc = put_guest_lc(vcpu, EXT_IRQ_EXTERNAL_CALL, | |
654 | (u16 *)__LC_EXT_INT_CODE); | |
383d0b05 | 655 | rc |= put_guest_lc(vcpu, extcall.code, (u16 *)__LC_EXT_CPU_ADDR); |
0fb97abe JF |
656 | rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW, |
657 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
658 | rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, &vcpu->arch.sie_block->gpsw, | |
659 | sizeof(psw_t)); | |
99e20009 | 660 | return rc ? -EFAULT : 0; |
0fb97abe JF |
661 | } |
662 | ||
383d0b05 | 663 | static int __must_check __deliver_prog(struct kvm_vcpu *vcpu) |
8712836b | 664 | { |
383d0b05 JF |
665 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
666 | struct kvm_s390_pgm_info pgm_info; | |
a9a846fd | 667 | int rc = 0, nullifying = false; |
634790b8 | 668 | u16 ilen; |
8712836b | 669 | |
383d0b05 JF |
670 | spin_lock(&li->lock); |
671 | pgm_info = li->irq.pgm; | |
672 | clear_bit(IRQ_PEND_PROG, &li->pending_irqs); | |
673 | memset(&li->irq.pgm, 0, sizeof(pgm_info)); | |
674 | spin_unlock(&li->lock); | |
675 | ||
634790b8 | 676 | ilen = pgm_info.flags & KVM_S390_PGM_FLAGS_ILC_MASK; |
0e8bc06a DH |
677 | VCPU_EVENT(vcpu, 3, "deliver: program irq code 0x%x, ilen:%d", |
678 | pgm_info.code, ilen); | |
0fb97abe JF |
679 | vcpu->stat.deliver_program_int++; |
680 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_PROGRAM_INT, | |
383d0b05 | 681 | pgm_info.code, 0); |
0fb97abe | 682 | |
383d0b05 | 683 | switch (pgm_info.code & ~PGM_PER) { |
8712836b DH |
684 | case PGM_AFX_TRANSLATION: |
685 | case PGM_ASX_TRANSLATION: | |
686 | case PGM_EX_TRANSLATION: | |
687 | case PGM_LFX_TRANSLATION: | |
688 | case PGM_LSTE_SEQUENCE: | |
689 | case PGM_LSX_TRANSLATION: | |
690 | case PGM_LX_TRANSLATION: | |
691 | case PGM_PRIMARY_AUTHORITY: | |
692 | case PGM_SECONDARY_AUTHORITY: | |
a9a846fd TH |
693 | nullifying = true; |
694 | /* fall through */ | |
8712836b | 695 | case PGM_SPACE_SWITCH: |
383d0b05 | 696 | rc = put_guest_lc(vcpu, pgm_info.trans_exc_code, |
8712836b DH |
697 | (u64 *)__LC_TRANS_EXC_CODE); |
698 | break; | |
699 | case PGM_ALEN_TRANSLATION: | |
700 | case PGM_ALE_SEQUENCE: | |
701 | case PGM_ASTE_INSTANCE: | |
702 | case PGM_ASTE_SEQUENCE: | |
703 | case PGM_ASTE_VALIDITY: | |
704 | case PGM_EXTENDED_AUTHORITY: | |
383d0b05 | 705 | rc = put_guest_lc(vcpu, pgm_info.exc_access_id, |
8712836b | 706 | (u8 *)__LC_EXC_ACCESS_ID); |
a9a846fd | 707 | nullifying = true; |
8712836b DH |
708 | break; |
709 | case PGM_ASCE_TYPE: | |
710 | case PGM_PAGE_TRANSLATION: | |
711 | case PGM_REGION_FIRST_TRANS: | |
712 | case PGM_REGION_SECOND_TRANS: | |
713 | case PGM_REGION_THIRD_TRANS: | |
714 | case PGM_SEGMENT_TRANSLATION: | |
383d0b05 | 715 | rc = put_guest_lc(vcpu, pgm_info.trans_exc_code, |
8712836b | 716 | (u64 *)__LC_TRANS_EXC_CODE); |
383d0b05 | 717 | rc |= put_guest_lc(vcpu, pgm_info.exc_access_id, |
8712836b | 718 | (u8 *)__LC_EXC_ACCESS_ID); |
383d0b05 | 719 | rc |= put_guest_lc(vcpu, pgm_info.op_access_id, |
8712836b | 720 | (u8 *)__LC_OP_ACCESS_ID); |
a9a846fd | 721 | nullifying = true; |
8712836b DH |
722 | break; |
723 | case PGM_MONITOR: | |
383d0b05 | 724 | rc = put_guest_lc(vcpu, pgm_info.mon_class_nr, |
a36c5393 | 725 | (u16 *)__LC_MON_CLASS_NR); |
383d0b05 | 726 | rc |= put_guest_lc(vcpu, pgm_info.mon_code, |
8712836b DH |
727 | (u64 *)__LC_MON_CODE); |
728 | break; | |
403c8648 | 729 | case PGM_VECTOR_PROCESSING: |
8712836b | 730 | case PGM_DATA: |
383d0b05 | 731 | rc = put_guest_lc(vcpu, pgm_info.data_exc_code, |
8712836b DH |
732 | (u32 *)__LC_DATA_EXC_CODE); |
733 | break; | |
734 | case PGM_PROTECTION: | |
383d0b05 | 735 | rc = put_guest_lc(vcpu, pgm_info.trans_exc_code, |
8712836b | 736 | (u64 *)__LC_TRANS_EXC_CODE); |
383d0b05 | 737 | rc |= put_guest_lc(vcpu, pgm_info.exc_access_id, |
8712836b DH |
738 | (u8 *)__LC_EXC_ACCESS_ID); |
739 | break; | |
a9a846fd TH |
740 | case PGM_STACK_FULL: |
741 | case PGM_STACK_EMPTY: | |
742 | case PGM_STACK_SPECIFICATION: | |
743 | case PGM_STACK_TYPE: | |
744 | case PGM_STACK_OPERATION: | |
745 | case PGM_TRACE_TABEL: | |
746 | case PGM_CRYPTO_OPERATION: | |
747 | nullifying = true; | |
748 | break; | |
8712836b DH |
749 | } |
750 | ||
383d0b05 JF |
751 | if (pgm_info.code & PGM_PER) { |
752 | rc |= put_guest_lc(vcpu, pgm_info.per_code, | |
8712836b | 753 | (u8 *) __LC_PER_CODE); |
383d0b05 | 754 | rc |= put_guest_lc(vcpu, pgm_info.per_atmid, |
8712836b | 755 | (u8 *)__LC_PER_ATMID); |
383d0b05 | 756 | rc |= put_guest_lc(vcpu, pgm_info.per_address, |
8712836b | 757 | (u64 *) __LC_PER_ADDRESS); |
383d0b05 | 758 | rc |= put_guest_lc(vcpu, pgm_info.per_access_id, |
8712836b DH |
759 | (u8 *) __LC_PER_ACCESS_ID); |
760 | } | |
761 | ||
eaa4f416 | 762 | if (nullifying && !(pgm_info.flags & KVM_S390_PGM_FLAGS_NO_REWIND)) |
0e8bc06a | 763 | kvm_s390_rewind_psw(vcpu, ilen); |
a9a846fd | 764 | |
0e8bc06a DH |
765 | /* bit 1+2 of the target are the ilc, so we can directly use ilen */ |
766 | rc |= put_guest_lc(vcpu, ilen, (u16 *) __LC_PGM_ILC); | |
2ba45968 DH |
767 | rc |= put_guest_lc(vcpu, vcpu->arch.sie_block->gbea, |
768 | (u64 *) __LC_LAST_BREAK); | |
383d0b05 | 769 | rc |= put_guest_lc(vcpu, pgm_info.code, |
8712836b DH |
770 | (u16 *)__LC_PGM_INT_CODE); |
771 | rc |= write_guest_lc(vcpu, __LC_PGM_OLD_PSW, | |
772 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
773 | rc |= read_guest_lc(vcpu, __LC_PGM_NEW_PSW, | |
774 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
99e20009 | 775 | return rc ? -EFAULT : 0; |
0fb97abe JF |
776 | } |
777 | ||
6d3da241 | 778 | static int __must_check __deliver_service(struct kvm_vcpu *vcpu) |
0fb97abe | 779 | { |
6d3da241 JF |
780 | struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int; |
781 | struct kvm_s390_ext_info ext; | |
782 | int rc = 0; | |
783 | ||
784 | spin_lock(&fi->lock); | |
785 | if (!(test_bit(IRQ_PEND_EXT_SERVICE, &fi->pending_irqs))) { | |
786 | spin_unlock(&fi->lock); | |
787 | return 0; | |
788 | } | |
789 | ext = fi->srv_signal; | |
790 | memset(&fi->srv_signal, 0, sizeof(ext)); | |
791 | clear_bit(IRQ_PEND_EXT_SERVICE, &fi->pending_irqs); | |
792 | spin_unlock(&fi->lock); | |
0fb97abe | 793 | |
3f24ba15 | 794 | VCPU_EVENT(vcpu, 4, "deliver: sclp parameter 0x%x", |
6d3da241 | 795 | ext.ext_params); |
0fb97abe | 796 | vcpu->stat.deliver_service_signal++; |
6d3da241 JF |
797 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_INT_SERVICE, |
798 | ext.ext_params, 0); | |
0fb97abe JF |
799 | |
800 | rc = put_guest_lc(vcpu, EXT_IRQ_SERVICE_SIG, (u16 *)__LC_EXT_INT_CODE); | |
467fc298 | 801 | rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR); |
0fb97abe JF |
802 | rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW, |
803 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
804 | rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, | |
805 | &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); | |
6d3da241 | 806 | rc |= put_guest_lc(vcpu, ext.ext_params, |
0fb97abe | 807 | (u32 *)__LC_EXT_PARAMS); |
6d3da241 | 808 | |
99e20009 | 809 | return rc ? -EFAULT : 0; |
0fb97abe JF |
810 | } |
811 | ||
6d3da241 | 812 | static int __must_check __deliver_pfault_done(struct kvm_vcpu *vcpu) |
0fb97abe | 813 | { |
6d3da241 JF |
814 | struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int; |
815 | struct kvm_s390_interrupt_info *inti; | |
816 | int rc = 0; | |
0fb97abe | 817 | |
6d3da241 JF |
818 | spin_lock(&fi->lock); |
819 | inti = list_first_entry_or_null(&fi->lists[FIRQ_LIST_PFAULT], | |
820 | struct kvm_s390_interrupt_info, | |
821 | list); | |
822 | if (inti) { | |
6d3da241 JF |
823 | list_del(&inti->list); |
824 | fi->counters[FIRQ_CNTR_PFAULT] -= 1; | |
825 | } | |
826 | if (list_empty(&fi->lists[FIRQ_LIST_PFAULT])) | |
827 | clear_bit(IRQ_PEND_PFAULT_DONE, &fi->pending_irqs); | |
828 | spin_unlock(&fi->lock); | |
8712836b | 829 | |
6d3da241 | 830 | if (inti) { |
3f24ba15 CB |
831 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, |
832 | KVM_S390_INT_PFAULT_DONE, 0, | |
833 | inti->ext.ext_params2); | |
834 | VCPU_EVENT(vcpu, 4, "deliver: pfault done token 0x%llx", | |
835 | inti->ext.ext_params2); | |
836 | ||
6d3da241 JF |
837 | rc = put_guest_lc(vcpu, EXT_IRQ_CP_SERVICE, |
838 | (u16 *)__LC_EXT_INT_CODE); | |
839 | rc |= put_guest_lc(vcpu, PFAULT_DONE, | |
840 | (u16 *)__LC_EXT_CPU_ADDR); | |
841 | rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW, | |
842 | &vcpu->arch.sie_block->gpsw, | |
843 | sizeof(psw_t)); | |
844 | rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, | |
845 | &vcpu->arch.sie_block->gpsw, | |
846 | sizeof(psw_t)); | |
847 | rc |= put_guest_lc(vcpu, inti->ext.ext_params2, | |
848 | (u64 *)__LC_EXT_PARAMS2); | |
849 | kfree(inti); | |
850 | } | |
99e20009 | 851 | return rc ? -EFAULT : 0; |
0fb97abe JF |
852 | } |
853 | ||
6d3da241 | 854 | static int __must_check __deliver_virtio(struct kvm_vcpu *vcpu) |
0fb97abe | 855 | { |
6d3da241 JF |
856 | struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int; |
857 | struct kvm_s390_interrupt_info *inti; | |
858 | int rc = 0; | |
0fb97abe | 859 | |
6d3da241 JF |
860 | spin_lock(&fi->lock); |
861 | inti = list_first_entry_or_null(&fi->lists[FIRQ_LIST_VIRTIO], | |
862 | struct kvm_s390_interrupt_info, | |
863 | list); | |
864 | if (inti) { | |
865 | VCPU_EVENT(vcpu, 4, | |
3f24ba15 | 866 | "deliver: virtio parm: 0x%x,parm64: 0x%llx", |
6d3da241 JF |
867 | inti->ext.ext_params, inti->ext.ext_params2); |
868 | vcpu->stat.deliver_virtio_interrupt++; | |
869 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, | |
870 | inti->type, | |
871 | inti->ext.ext_params, | |
872 | inti->ext.ext_params2); | |
873 | list_del(&inti->list); | |
874 | fi->counters[FIRQ_CNTR_VIRTIO] -= 1; | |
875 | } | |
876 | if (list_empty(&fi->lists[FIRQ_LIST_VIRTIO])) | |
877 | clear_bit(IRQ_PEND_VIRTIO, &fi->pending_irqs); | |
878 | spin_unlock(&fi->lock); | |
0fb97abe | 879 | |
6d3da241 JF |
880 | if (inti) { |
881 | rc = put_guest_lc(vcpu, EXT_IRQ_CP_SERVICE, | |
882 | (u16 *)__LC_EXT_INT_CODE); | |
883 | rc |= put_guest_lc(vcpu, VIRTIO_PARAM, | |
884 | (u16 *)__LC_EXT_CPU_ADDR); | |
885 | rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW, | |
886 | &vcpu->arch.sie_block->gpsw, | |
887 | sizeof(psw_t)); | |
888 | rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, | |
889 | &vcpu->arch.sie_block->gpsw, | |
890 | sizeof(psw_t)); | |
891 | rc |= put_guest_lc(vcpu, inti->ext.ext_params, | |
892 | (u32 *)__LC_EXT_PARAMS); | |
893 | rc |= put_guest_lc(vcpu, inti->ext.ext_params2, | |
894 | (u64 *)__LC_EXT_PARAMS2); | |
895 | kfree(inti); | |
896 | } | |
99e20009 | 897 | return rc ? -EFAULT : 0; |
0fb97abe JF |
898 | } |
899 | ||
900 | static int __must_check __deliver_io(struct kvm_vcpu *vcpu, | |
6d3da241 | 901 | unsigned long irq_type) |
0fb97abe | 902 | { |
6d3da241 JF |
903 | struct list_head *isc_list; |
904 | struct kvm_s390_float_interrupt *fi; | |
905 | struct kvm_s390_interrupt_info *inti = NULL; | |
906 | int rc = 0; | |
0fb97abe | 907 | |
6d3da241 | 908 | fi = &vcpu->kvm->arch.float_int; |
8712836b | 909 | |
6d3da241 | 910 | spin_lock(&fi->lock); |
ee739f4b | 911 | isc_list = &fi->lists[irq_type_to_isc(irq_type)]; |
6d3da241 JF |
912 | inti = list_first_entry_or_null(isc_list, |
913 | struct kvm_s390_interrupt_info, | |
914 | list); | |
915 | if (inti) { | |
dcc98ea6 CB |
916 | if (inti->type & KVM_S390_INT_IO_AI_MASK) |
917 | VCPU_EVENT(vcpu, 4, "%s", "deliver: I/O (AI)"); | |
918 | else | |
919 | VCPU_EVENT(vcpu, 4, "deliver: I/O %x ss %x schid %04x", | |
920 | inti->io.subchannel_id >> 8, | |
921 | inti->io.subchannel_id >> 1 & 0x3, | |
922 | inti->io.subchannel_nr); | |
923 | ||
6d3da241 JF |
924 | vcpu->stat.deliver_io_int++; |
925 | trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, | |
926 | inti->type, | |
927 | ((__u32)inti->io.subchannel_id << 16) | | |
928 | inti->io.subchannel_nr, | |
929 | ((__u64)inti->io.io_int_parm << 32) | | |
930 | inti->io.io_int_word); | |
931 | list_del(&inti->list); | |
932 | fi->counters[FIRQ_CNTR_IO] -= 1; | |
933 | } | |
934 | if (list_empty(isc_list)) | |
935 | clear_bit(irq_type, &fi->pending_irqs); | |
936 | spin_unlock(&fi->lock); | |
937 | ||
938 | if (inti) { | |
939 | rc = put_guest_lc(vcpu, inti->io.subchannel_id, | |
940 | (u16 *)__LC_SUBCHANNEL_ID); | |
941 | rc |= put_guest_lc(vcpu, inti->io.subchannel_nr, | |
942 | (u16 *)__LC_SUBCHANNEL_NR); | |
943 | rc |= put_guest_lc(vcpu, inti->io.io_int_parm, | |
944 | (u32 *)__LC_IO_INT_PARM); | |
945 | rc |= put_guest_lc(vcpu, inti->io.io_int_word, | |
946 | (u32 *)__LC_IO_INT_WORD); | |
947 | rc |= write_guest_lc(vcpu, __LC_IO_OLD_PSW, | |
948 | &vcpu->arch.sie_block->gpsw, | |
949 | sizeof(psw_t)); | |
950 | rc |= read_guest_lc(vcpu, __LC_IO_NEW_PSW, | |
951 | &vcpu->arch.sie_block->gpsw, | |
952 | sizeof(psw_t)); | |
953 | kfree(inti); | |
954 | } | |
383d0b05 | 955 | |
99e20009 | 956 | return rc ? -EFAULT : 0; |
383d0b05 JF |
957 | } |
958 | ||
959 | typedef int (*deliver_irq_t)(struct kvm_vcpu *vcpu); | |
960 | ||
961 | static const deliver_irq_t deliver_irq_funcs[] = { | |
962 | [IRQ_PEND_MCHK_EX] = __deliver_machine_check, | |
6d3da241 | 963 | [IRQ_PEND_MCHK_REP] = __deliver_machine_check, |
383d0b05 JF |
964 | [IRQ_PEND_PROG] = __deliver_prog, |
965 | [IRQ_PEND_EXT_EMERGENCY] = __deliver_emergency_signal, | |
966 | [IRQ_PEND_EXT_EXTERNAL] = __deliver_external_call, | |
967 | [IRQ_PEND_EXT_CLOCK_COMP] = __deliver_ckc, | |
968 | [IRQ_PEND_EXT_CPU_TIMER] = __deliver_cpu_timer, | |
969 | [IRQ_PEND_RESTART] = __deliver_restart, | |
383d0b05 JF |
970 | [IRQ_PEND_SET_PREFIX] = __deliver_set_prefix, |
971 | [IRQ_PEND_PFAULT_INIT] = __deliver_pfault_init, | |
6d3da241 JF |
972 | [IRQ_PEND_EXT_SERVICE] = __deliver_service, |
973 | [IRQ_PEND_PFAULT_DONE] = __deliver_pfault_done, | |
974 | [IRQ_PEND_VIRTIO] = __deliver_virtio, | |
383d0b05 JF |
975 | }; |
976 | ||
ea5f4969 DH |
977 | /* Check whether an external call is pending (deliverable or not) */ |
978 | int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu) | |
4953919f | 979 | { |
ea5f4969 | 980 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
4953919f | 981 | |
37c5f6c8 | 982 | if (!sclp.has_sigpif) |
ea5f4969 | 983 | return test_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs); |
4953919f | 984 | |
a5bd7647 | 985 | return sca_ext_call_pending(vcpu, NULL); |
4953919f DH |
986 | } |
987 | ||
9a022067 | 988 | int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop) |
ba5c1e9b | 989 | { |
4d32ad6b DH |
990 | if (deliverable_irqs(vcpu)) |
991 | return 1; | |
ba5c1e9b | 992 | |
4d32ad6b DH |
993 | if (kvm_cpu_has_pending_timer(vcpu)) |
994 | return 1; | |
ba5c1e9b | 995 | |
ea5f4969 | 996 | /* external call pending and deliverable */ |
4d32ad6b | 997 | if (kvm_s390_ext_call_pending(vcpu) && |
ea5f4969 DH |
998 | !psw_extint_disabled(vcpu) && |
999 | (vcpu->arch.sie_block->gcr[0] & 0x2000ul)) | |
4d32ad6b | 1000 | return 1; |
4953919f | 1001 | |
4d32ad6b DH |
1002 | if (!exclude_stop && kvm_s390_is_stop_irq_pending(vcpu)) |
1003 | return 1; | |
1004 | return 0; | |
ba5c1e9b CO |
1005 | } |
1006 | ||
3d80840d MT |
1007 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) |
1008 | { | |
b4aec925 | 1009 | return ckc_irq_pending(vcpu) || cpu_timer_irq_pending(vcpu); |
3d80840d MT |
1010 | } |
1011 | ||
b3c17f10 DH |
1012 | static u64 __calculate_sltime(struct kvm_vcpu *vcpu) |
1013 | { | |
1014 | u64 now, cputm, sltime = 0; | |
1015 | ||
1016 | if (ckc_interrupts_enabled(vcpu)) { | |
1017 | now = kvm_s390_get_tod_clock_fast(vcpu->kvm); | |
1018 | sltime = tod_to_ns(vcpu->arch.sie_block->ckc - now); | |
1019 | /* already expired or overflow? */ | |
1020 | if (!sltime || vcpu->arch.sie_block->ckc <= now) | |
1021 | return 0; | |
1022 | if (cpu_timer_interrupts_enabled(vcpu)) { | |
1023 | cputm = kvm_s390_get_cpu_timer(vcpu); | |
1024 | /* already expired? */ | |
1025 | if (cputm >> 63) | |
1026 | return 0; | |
1027 | return min(sltime, tod_to_ns(cputm)); | |
1028 | } | |
1029 | } else if (cpu_timer_interrupts_enabled(vcpu)) { | |
1030 | sltime = kvm_s390_get_cpu_timer(vcpu); | |
1031 | /* already expired? */ | |
1032 | if (sltime >> 63) | |
1033 | return 0; | |
1034 | } | |
1035 | return sltime; | |
1036 | } | |
1037 | ||
ba5c1e9b CO |
1038 | int kvm_s390_handle_wait(struct kvm_vcpu *vcpu) |
1039 | { | |
b3c17f10 | 1040 | u64 sltime; |
ba5c1e9b CO |
1041 | |
1042 | vcpu->stat.exit_wait_state++; | |
ba5c1e9b | 1043 | |
0759d068 | 1044 | /* fast path */ |
118b862b | 1045 | if (kvm_arch_vcpu_runnable(vcpu)) |
0759d068 | 1046 | return 0; |
e52b2af5 | 1047 | |
ba5c1e9b CO |
1048 | if (psw_interrupts_disabled(vcpu)) { |
1049 | VCPU_EVENT(vcpu, 3, "%s", "disabled wait"); | |
b8e660b8 | 1050 | return -EOPNOTSUPP; /* disabled wait */ |
ba5c1e9b CO |
1051 | } |
1052 | ||
b3c17f10 DH |
1053 | if (!ckc_interrupts_enabled(vcpu) && |
1054 | !cpu_timer_interrupts_enabled(vcpu)) { | |
ba5c1e9b | 1055 | VCPU_EVENT(vcpu, 3, "%s", "enabled wait w/o timer"); |
bda343ef | 1056 | __set_cpu_idle(vcpu); |
ba5c1e9b CO |
1057 | goto no_timer; |
1058 | } | |
1059 | ||
b3c17f10 DH |
1060 | sltime = __calculate_sltime(vcpu); |
1061 | if (!sltime) | |
bda343ef DH |
1062 | return 0; |
1063 | ||
1064 | __set_cpu_idle(vcpu); | |
8b0e1953 | 1065 | hrtimer_start(&vcpu->arch.ckc_timer, sltime, HRTIMER_MODE_REL); |
b3c17f10 | 1066 | VCPU_EVENT(vcpu, 4, "enabled wait: %llu ns", sltime); |
ba5c1e9b | 1067 | no_timer: |
800c1065 | 1068 | srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx); |
0759d068 | 1069 | kvm_vcpu_block(vcpu); |
ba5c1e9b | 1070 | __unset_cpu_idle(vcpu); |
800c1065 TH |
1071 | vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); |
1072 | ||
2d00f759 | 1073 | hrtimer_cancel(&vcpu->arch.ckc_timer); |
ba5c1e9b CO |
1074 | return 0; |
1075 | } | |
1076 | ||
0e9c85a5 DH |
1077 | void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu) |
1078 | { | |
3491caf2 CB |
1079 | /* |
1080 | * We cannot move this into the if, as the CPU might be already | |
1081 | * in kvm_vcpu_block without having the waitqueue set (polling) | |
1082 | */ | |
1083 | vcpu->valid_wakeup = true; | |
72e1ad42 CB |
1084 | /* |
1085 | * This is mostly to document, that the read in swait_active could | |
1086 | * be moved before other stores, leading to subtle races. | |
1087 | * All current users do not store or use an atomic like update | |
1088 | */ | |
1089 | smp_mb__after_atomic(); | |
8577370f | 1090 | if (swait_active(&vcpu->wq)) { |
0e9c85a5 DH |
1091 | /* |
1092 | * The vcpu gave up the cpu voluntarily, mark it as a good | |
1093 | * yield-candidate. | |
1094 | */ | |
1095 | vcpu->preempted = true; | |
8577370f | 1096 | swake_up(&vcpu->wq); |
ce2e4f0b | 1097 | vcpu->stat.halt_wakeup++; |
0e9c85a5 | 1098 | } |
adbf1698 DH |
1099 | /* |
1100 | * The VCPU might not be sleeping but is executing the VSIE. Let's | |
1101 | * kick it, so it leaves the SIE to process the request. | |
1102 | */ | |
1103 | kvm_s390_vsie_kick(vcpu); | |
0e9c85a5 DH |
1104 | } |
1105 | ||
ca872302 CB |
1106 | enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer) |
1107 | { | |
1108 | struct kvm_vcpu *vcpu; | |
b3c17f10 | 1109 | u64 sltime; |
ca872302 CB |
1110 | |
1111 | vcpu = container_of(timer, struct kvm_vcpu, arch.ckc_timer); | |
b3c17f10 | 1112 | sltime = __calculate_sltime(vcpu); |
ca872302 | 1113 | |
2d00f759 DH |
1114 | /* |
1115 | * If the monotonic clock runs faster than the tod clock we might be | |
1116 | * woken up too early and have to go back to sleep to avoid deadlocks. | |
1117 | */ | |
b3c17f10 | 1118 | if (sltime && hrtimer_forward_now(timer, ns_to_ktime(sltime))) |
2d00f759 DH |
1119 | return HRTIMER_RESTART; |
1120 | kvm_s390_vcpu_wakeup(vcpu); | |
ca872302 CB |
1121 | return HRTIMER_NORESTART; |
1122 | } | |
ba5c1e9b | 1123 | |
2ed10cc1 JF |
1124 | void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu) |
1125 | { | |
1126 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
2ed10cc1 | 1127 | |
4ae3c081 | 1128 | spin_lock(&li->lock); |
383d0b05 JF |
1129 | li->pending_irqs = 0; |
1130 | bitmap_zero(li->sigp_emerg_pending, KVM_MAX_VCPUS); | |
1131 | memset(&li->irq, 0, sizeof(li->irq)); | |
4ae3c081 | 1132 | spin_unlock(&li->lock); |
4953919f | 1133 | |
a5bd7647 | 1134 | sca_clear_ext_call(vcpu); |
2ed10cc1 JF |
1135 | } |
1136 | ||
614aeab4 | 1137 | int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu) |
ba5c1e9b | 1138 | { |
180c12fb | 1139 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
383d0b05 | 1140 | deliver_irq_t func; |
79395031 | 1141 | int rc = 0; |
383d0b05 | 1142 | unsigned long irq_type; |
6d3da241 | 1143 | unsigned long irqs; |
ba5c1e9b CO |
1144 | |
1145 | __reset_intercept_indicators(vcpu); | |
ba5c1e9b | 1146 | |
383d0b05 JF |
1147 | /* pending ckc conditions might have been invalidated */ |
1148 | clear_bit(IRQ_PEND_EXT_CLOCK_COMP, &li->pending_irqs); | |
b4aec925 | 1149 | if (ckc_irq_pending(vcpu)) |
383d0b05 JF |
1150 | set_bit(IRQ_PEND_EXT_CLOCK_COMP, &li->pending_irqs); |
1151 | ||
b4aec925 DH |
1152 | /* pending cpu timer conditions might have been invalidated */ |
1153 | clear_bit(IRQ_PEND_EXT_CPU_TIMER, &li->pending_irqs); | |
1154 | if (cpu_timer_irq_pending(vcpu)) | |
1155 | set_bit(IRQ_PEND_EXT_CPU_TIMER, &li->pending_irqs); | |
1156 | ||
ffeca0ae | 1157 | while ((irqs = deliverable_irqs(vcpu)) && !rc) { |
383d0b05 | 1158 | /* bits are in the order of interrupt priority */ |
6d3da241 | 1159 | irq_type = find_first_bit(&irqs, IRQ_PEND_COUNT); |
6d3da241 JF |
1160 | if (is_ioirq(irq_type)) { |
1161 | rc = __deliver_io(vcpu, irq_type); | |
1162 | } else { | |
1163 | func = deliver_irq_funcs[irq_type]; | |
1164 | if (!func) { | |
1165 | WARN_ON_ONCE(func == NULL); | |
1166 | clear_bit(irq_type, &li->pending_irqs); | |
1167 | continue; | |
1168 | } | |
1169 | rc = func(vcpu); | |
383d0b05 | 1170 | } |
ffeca0ae | 1171 | } |
383d0b05 | 1172 | |
6d3da241 | 1173 | set_intercept_indicators(vcpu); |
79395031 JF |
1174 | |
1175 | return rc; | |
ba5c1e9b CO |
1176 | } |
1177 | ||
383d0b05 | 1178 | static int __inject_prog(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) |
0146a7b0 JF |
1179 | { |
1180 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1181 | ||
ed2afcfa DH |
1182 | VCPU_EVENT(vcpu, 3, "inject: program irq code 0x%x", irq->u.pgm.code); |
1183 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_PROGRAM_INT, | |
1184 | irq->u.pgm.code, 0); | |
1185 | ||
634790b8 DH |
1186 | if (!(irq->u.pgm.flags & KVM_S390_PGM_FLAGS_ILC_VALID)) { |
1187 | /* auto detection if no valid ILC was given */ | |
1188 | irq->u.pgm.flags &= ~KVM_S390_PGM_FLAGS_ILC_MASK; | |
1189 | irq->u.pgm.flags |= kvm_s390_get_ilen(vcpu); | |
1190 | irq->u.pgm.flags |= KVM_S390_PGM_FLAGS_ILC_VALID; | |
1191 | } | |
1192 | ||
238293b1 DH |
1193 | if (irq->u.pgm.code == PGM_PER) { |
1194 | li->irq.pgm.code |= PGM_PER; | |
634790b8 | 1195 | li->irq.pgm.flags = irq->u.pgm.flags; |
238293b1 DH |
1196 | /* only modify PER related information */ |
1197 | li->irq.pgm.per_address = irq->u.pgm.per_address; | |
1198 | li->irq.pgm.per_code = irq->u.pgm.per_code; | |
1199 | li->irq.pgm.per_atmid = irq->u.pgm.per_atmid; | |
1200 | li->irq.pgm.per_access_id = irq->u.pgm.per_access_id; | |
1201 | } else if (!(irq->u.pgm.code & PGM_PER)) { | |
1202 | li->irq.pgm.code = (li->irq.pgm.code & PGM_PER) | | |
1203 | irq->u.pgm.code; | |
634790b8 | 1204 | li->irq.pgm.flags = irq->u.pgm.flags; |
238293b1 DH |
1205 | /* only modify non-PER information */ |
1206 | li->irq.pgm.trans_exc_code = irq->u.pgm.trans_exc_code; | |
1207 | li->irq.pgm.mon_code = irq->u.pgm.mon_code; | |
1208 | li->irq.pgm.data_exc_code = irq->u.pgm.data_exc_code; | |
1209 | li->irq.pgm.mon_class_nr = irq->u.pgm.mon_class_nr; | |
1210 | li->irq.pgm.exc_access_id = irq->u.pgm.exc_access_id; | |
1211 | li->irq.pgm.op_access_id = irq->u.pgm.op_access_id; | |
1212 | } else { | |
1213 | li->irq.pgm = irq->u.pgm; | |
1214 | } | |
9185124e | 1215 | set_bit(IRQ_PEND_PROG, &li->pending_irqs); |
0146a7b0 JF |
1216 | return 0; |
1217 | } | |
1218 | ||
383d0b05 | 1219 | static int __inject_pfault_init(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) |
0146a7b0 JF |
1220 | { |
1221 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1222 | ||
3f24ba15 CB |
1223 | VCPU_EVENT(vcpu, 4, "inject: pfault init parameter block at 0x%llx", |
1224 | irq->u.ext.ext_params2); | |
383d0b05 JF |
1225 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_PFAULT_INIT, |
1226 | irq->u.ext.ext_params, | |
ed2afcfa | 1227 | irq->u.ext.ext_params2); |
383d0b05 JF |
1228 | |
1229 | li->irq.ext = irq->u.ext; | |
1230 | set_bit(IRQ_PEND_PFAULT_INIT, &li->pending_irqs); | |
805de8f4 | 1231 | atomic_or(CPUSTAT_EXT_INT, li->cpuflags); |
0146a7b0 JF |
1232 | return 0; |
1233 | } | |
1234 | ||
0675d92d | 1235 | static int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) |
0146a7b0 JF |
1236 | { |
1237 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
383d0b05 | 1238 | struct kvm_s390_extcall_info *extcall = &li->irq.extcall; |
ea5f4969 | 1239 | uint16_t src_id = irq->u.extcall.code; |
0146a7b0 | 1240 | |
3f24ba15 | 1241 | VCPU_EVENT(vcpu, 4, "inject: external call source-cpu:%u", |
ea5f4969 | 1242 | src_id); |
383d0b05 | 1243 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_EXTERNAL_CALL, |
ed2afcfa | 1244 | src_id, 0); |
ea5f4969 DH |
1245 | |
1246 | /* sending vcpu invalid */ | |
152e9f65 | 1247 | if (kvm_get_vcpu_by_id(vcpu->kvm, src_id) == NULL) |
ea5f4969 DH |
1248 | return -EINVAL; |
1249 | ||
37c5f6c8 | 1250 | if (sclp.has_sigpif) |
a5bd7647 | 1251 | return sca_inject_ext_call(vcpu, src_id); |
383d0b05 | 1252 | |
b938eace | 1253 | if (test_and_set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs)) |
ea5f4969 | 1254 | return -EBUSY; |
383d0b05 | 1255 | *extcall = irq->u.extcall; |
805de8f4 | 1256 | atomic_or(CPUSTAT_EXT_INT, li->cpuflags); |
0146a7b0 JF |
1257 | return 0; |
1258 | } | |
1259 | ||
383d0b05 | 1260 | static int __inject_set_prefix(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) |
0146a7b0 JF |
1261 | { |
1262 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
383d0b05 | 1263 | struct kvm_s390_prefix_info *prefix = &li->irq.prefix; |
0146a7b0 | 1264 | |
ed2afcfa | 1265 | VCPU_EVENT(vcpu, 3, "inject: set prefix to %x", |
556cc0da | 1266 | irq->u.prefix.address); |
383d0b05 | 1267 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_SIGP_SET_PREFIX, |
ed2afcfa | 1268 | irq->u.prefix.address, 0); |
383d0b05 | 1269 | |
a3a9c59a DH |
1270 | if (!is_vcpu_stopped(vcpu)) |
1271 | return -EBUSY; | |
1272 | ||
383d0b05 JF |
1273 | *prefix = irq->u.prefix; |
1274 | set_bit(IRQ_PEND_SET_PREFIX, &li->pending_irqs); | |
0146a7b0 JF |
1275 | return 0; |
1276 | } | |
1277 | ||
6cddd432 | 1278 | #define KVM_S390_STOP_SUPP_FLAGS (KVM_S390_STOP_FLAG_STORE_STATUS) |
383d0b05 | 1279 | static int __inject_sigp_stop(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) |
0146a7b0 JF |
1280 | { |
1281 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
2822545f | 1282 | struct kvm_s390_stop_info *stop = &li->irq.stop; |
6cddd432 | 1283 | int rc = 0; |
0146a7b0 | 1284 | |
ed2afcfa | 1285 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_SIGP_STOP, 0, 0); |
383d0b05 | 1286 | |
2822545f DH |
1287 | if (irq->u.stop.flags & ~KVM_S390_STOP_SUPP_FLAGS) |
1288 | return -EINVAL; | |
1289 | ||
6cddd432 DH |
1290 | if (is_vcpu_stopped(vcpu)) { |
1291 | if (irq->u.stop.flags & KVM_S390_STOP_FLAG_STORE_STATUS) | |
1292 | rc = kvm_s390_store_status_unloaded(vcpu, | |
1293 | KVM_S390_STORE_STATUS_NOADDR); | |
1294 | return rc; | |
1295 | } | |
1296 | ||
1297 | if (test_and_set_bit(IRQ_PEND_SIGP_STOP, &li->pending_irqs)) | |
1298 | return -EBUSY; | |
2822545f | 1299 | stop->flags = irq->u.stop.flags; |
6cddd432 | 1300 | __set_cpuflag(vcpu, CPUSTAT_STOP_INT); |
0146a7b0 JF |
1301 | return 0; |
1302 | } | |
1303 | ||
1304 | static int __inject_sigp_restart(struct kvm_vcpu *vcpu, | |
383d0b05 | 1305 | struct kvm_s390_irq *irq) |
0146a7b0 JF |
1306 | { |
1307 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1308 | ||
3f24ba15 | 1309 | VCPU_EVENT(vcpu, 3, "%s", "inject: restart int"); |
ed2afcfa | 1310 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_RESTART, 0, 0); |
383d0b05 JF |
1311 | |
1312 | set_bit(IRQ_PEND_RESTART, &li->pending_irqs); | |
0146a7b0 JF |
1313 | return 0; |
1314 | } | |
1315 | ||
1316 | static int __inject_sigp_emergency(struct kvm_vcpu *vcpu, | |
383d0b05 | 1317 | struct kvm_s390_irq *irq) |
0146a7b0 JF |
1318 | { |
1319 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1320 | ||
3f24ba15 | 1321 | VCPU_EVENT(vcpu, 4, "inject: emergency from cpu %u", |
383d0b05 JF |
1322 | irq->u.emerg.code); |
1323 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_EMERGENCY, | |
ed2afcfa | 1324 | irq->u.emerg.code, 0); |
383d0b05 | 1325 | |
b85de33a DH |
1326 | /* sending vcpu invalid */ |
1327 | if (kvm_get_vcpu_by_id(vcpu->kvm, irq->u.emerg.code) == NULL) | |
1328 | return -EINVAL; | |
1329 | ||
49538d12 | 1330 | set_bit(irq->u.emerg.code, li->sigp_emerg_pending); |
383d0b05 | 1331 | set_bit(IRQ_PEND_EXT_EMERGENCY, &li->pending_irqs); |
805de8f4 | 1332 | atomic_or(CPUSTAT_EXT_INT, li->cpuflags); |
0146a7b0 JF |
1333 | return 0; |
1334 | } | |
1335 | ||
383d0b05 | 1336 | static int __inject_mchk(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) |
0146a7b0 JF |
1337 | { |
1338 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
383d0b05 | 1339 | struct kvm_s390_mchk_info *mchk = &li->irq.mchk; |
0146a7b0 | 1340 | |
3f24ba15 | 1341 | VCPU_EVENT(vcpu, 3, "inject: machine check mcic 0x%llx", |
556cc0da | 1342 | irq->u.mchk.mcic); |
383d0b05 | 1343 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_MCHK, 0, |
ed2afcfa | 1344 | irq->u.mchk.mcic); |
383d0b05 JF |
1345 | |
1346 | /* | |
fc2020cf JF |
1347 | * Because repressible machine checks can be indicated along with |
1348 | * exigent machine checks (PoP, Chapter 11, Interruption action) | |
1349 | * we need to combine cr14, mcic and external damage code. | |
1350 | * Failing storage address and the logout area should not be or'ed | |
1351 | * together, we just indicate the last occurrence of the corresponding | |
1352 | * machine check | |
383d0b05 | 1353 | */ |
fc2020cf | 1354 | mchk->cr14 |= irq->u.mchk.cr14; |
383d0b05 | 1355 | mchk->mcic |= irq->u.mchk.mcic; |
fc2020cf JF |
1356 | mchk->ext_damage_code |= irq->u.mchk.ext_damage_code; |
1357 | mchk->failing_storage_address = irq->u.mchk.failing_storage_address; | |
1358 | memcpy(&mchk->fixed_logout, &irq->u.mchk.fixed_logout, | |
1359 | sizeof(mchk->fixed_logout)); | |
383d0b05 JF |
1360 | if (mchk->mcic & MCHK_EX_MASK) |
1361 | set_bit(IRQ_PEND_MCHK_EX, &li->pending_irqs); | |
1362 | else if (mchk->mcic & MCHK_REP_MASK) | |
1363 | set_bit(IRQ_PEND_MCHK_REP, &li->pending_irqs); | |
0146a7b0 JF |
1364 | return 0; |
1365 | } | |
1366 | ||
383d0b05 | 1367 | static int __inject_ckc(struct kvm_vcpu *vcpu) |
0146a7b0 JF |
1368 | { |
1369 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1370 | ||
3f24ba15 | 1371 | VCPU_EVENT(vcpu, 3, "%s", "inject: clock comparator external"); |
383d0b05 | 1372 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_CLOCK_COMP, |
ed2afcfa | 1373 | 0, 0); |
383d0b05 JF |
1374 | |
1375 | set_bit(IRQ_PEND_EXT_CLOCK_COMP, &li->pending_irqs); | |
805de8f4 | 1376 | atomic_or(CPUSTAT_EXT_INT, li->cpuflags); |
0146a7b0 JF |
1377 | return 0; |
1378 | } | |
1379 | ||
383d0b05 | 1380 | static int __inject_cpu_timer(struct kvm_vcpu *vcpu) |
0146a7b0 JF |
1381 | { |
1382 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1383 | ||
3f24ba15 | 1384 | VCPU_EVENT(vcpu, 3, "%s", "inject: cpu timer external"); |
383d0b05 | 1385 | trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_CPU_TIMER, |
ed2afcfa | 1386 | 0, 0); |
383d0b05 JF |
1387 | |
1388 | set_bit(IRQ_PEND_EXT_CPU_TIMER, &li->pending_irqs); | |
805de8f4 | 1389 | atomic_or(CPUSTAT_EXT_INT, li->cpuflags); |
ba5c1e9b CO |
1390 | return 0; |
1391 | } | |
1392 | ||
6d3da241 JF |
1393 | static struct kvm_s390_interrupt_info *get_io_int(struct kvm *kvm, |
1394 | int isc, u32 schid) | |
1395 | { | |
1396 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
1397 | struct list_head *isc_list = &fi->lists[FIRQ_LIST_IO_ISC_0 + isc]; | |
1398 | struct kvm_s390_interrupt_info *iter; | |
1399 | u16 id = (schid & 0xffff0000U) >> 16; | |
1400 | u16 nr = schid & 0x0000ffffU; | |
1401 | ||
1402 | spin_lock(&fi->lock); | |
1403 | list_for_each_entry(iter, isc_list, list) { | |
1404 | if (schid && (id != iter->io.subchannel_id || | |
1405 | nr != iter->io.subchannel_nr)) | |
1406 | continue; | |
1407 | /* found an appropriate entry */ | |
1408 | list_del_init(&iter->list); | |
1409 | fi->counters[FIRQ_CNTR_IO] -= 1; | |
1410 | if (list_empty(isc_list)) | |
ee739f4b | 1411 | clear_bit(isc_to_irq_type(isc), &fi->pending_irqs); |
6d3da241 JF |
1412 | spin_unlock(&fi->lock); |
1413 | return iter; | |
1414 | } | |
1415 | spin_unlock(&fi->lock); | |
1416 | return NULL; | |
1417 | } | |
383d0b05 | 1418 | |
6d3da241 JF |
1419 | /* |
1420 | * Dequeue and return an I/O interrupt matching any of the interruption | |
1421 | * subclasses as designated by the isc mask in cr6 and the schid (if != 0). | |
1422 | */ | |
fa6b7fe9 | 1423 | struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, |
6d3da241 JF |
1424 | u64 isc_mask, u32 schid) |
1425 | { | |
1426 | struct kvm_s390_interrupt_info *inti = NULL; | |
1427 | int isc; | |
1428 | ||
1429 | for (isc = 0; isc <= MAX_ISC && !inti; isc++) { | |
1430 | if (isc_mask & isc_to_isc_bits(isc)) | |
1431 | inti = get_io_int(kvm, isc, schid); | |
1432 | } | |
1433 | return inti; | |
1434 | } | |
1435 | ||
1436 | #define SCCB_MASK 0xFFFFFFF8 | |
1437 | #define SCCB_EVENT_PENDING 0x3 | |
1438 | ||
1439 | static int __inject_service(struct kvm *kvm, | |
1440 | struct kvm_s390_interrupt_info *inti) | |
1441 | { | |
1442 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
1443 | ||
1444 | spin_lock(&fi->lock); | |
1445 | fi->srv_signal.ext_params |= inti->ext.ext_params & SCCB_EVENT_PENDING; | |
1446 | /* | |
1447 | * Early versions of the QEMU s390 bios will inject several | |
1448 | * service interrupts after another without handling a | |
1449 | * condition code indicating busy. | |
1450 | * We will silently ignore those superfluous sccb values. | |
1451 | * A future version of QEMU will take care of serialization | |
1452 | * of servc requests | |
1453 | */ | |
1454 | if (fi->srv_signal.ext_params & SCCB_MASK) | |
1455 | goto out; | |
1456 | fi->srv_signal.ext_params |= inti->ext.ext_params & SCCB_MASK; | |
1457 | set_bit(IRQ_PEND_EXT_SERVICE, &fi->pending_irqs); | |
1458 | out: | |
1459 | spin_unlock(&fi->lock); | |
1460 | kfree(inti); | |
1461 | return 0; | |
1462 | } | |
1463 | ||
1464 | static int __inject_virtio(struct kvm *kvm, | |
1465 | struct kvm_s390_interrupt_info *inti) | |
1466 | { | |
1467 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
1468 | ||
1469 | spin_lock(&fi->lock); | |
1470 | if (fi->counters[FIRQ_CNTR_VIRTIO] >= KVM_S390_MAX_VIRTIO_IRQS) { | |
1471 | spin_unlock(&fi->lock); | |
1472 | return -EBUSY; | |
1473 | } | |
1474 | fi->counters[FIRQ_CNTR_VIRTIO] += 1; | |
1475 | list_add_tail(&inti->list, &fi->lists[FIRQ_LIST_VIRTIO]); | |
1476 | set_bit(IRQ_PEND_VIRTIO, &fi->pending_irqs); | |
1477 | spin_unlock(&fi->lock); | |
1478 | return 0; | |
1479 | } | |
1480 | ||
1481 | static int __inject_pfault_done(struct kvm *kvm, | |
1482 | struct kvm_s390_interrupt_info *inti) | |
1483 | { | |
1484 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
1485 | ||
1486 | spin_lock(&fi->lock); | |
1487 | if (fi->counters[FIRQ_CNTR_PFAULT] >= | |
1488 | (ASYNC_PF_PER_VCPU * KVM_MAX_VCPUS)) { | |
1489 | spin_unlock(&fi->lock); | |
1490 | return -EBUSY; | |
1491 | } | |
1492 | fi->counters[FIRQ_CNTR_PFAULT] += 1; | |
1493 | list_add_tail(&inti->list, &fi->lists[FIRQ_LIST_PFAULT]); | |
1494 | set_bit(IRQ_PEND_PFAULT_DONE, &fi->pending_irqs); | |
1495 | spin_unlock(&fi->lock); | |
1496 | return 0; | |
1497 | } | |
1498 | ||
1499 | #define CR_PENDING_SUBCLASS 28 | |
1500 | static int __inject_float_mchk(struct kvm *kvm, | |
1501 | struct kvm_s390_interrupt_info *inti) | |
1502 | { | |
1503 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
1504 | ||
1505 | spin_lock(&fi->lock); | |
1506 | fi->mchk.cr14 |= inti->mchk.cr14 & (1UL << CR_PENDING_SUBCLASS); | |
1507 | fi->mchk.mcic |= inti->mchk.mcic; | |
1508 | set_bit(IRQ_PEND_MCHK_REP, &fi->pending_irqs); | |
1509 | spin_unlock(&fi->lock); | |
1510 | kfree(inti); | |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | static int __inject_io(struct kvm *kvm, struct kvm_s390_interrupt_info *inti) | |
fa6b7fe9 CH |
1515 | { |
1516 | struct kvm_s390_float_interrupt *fi; | |
6d3da241 JF |
1517 | struct list_head *list; |
1518 | int isc; | |
fa6b7fe9 | 1519 | |
fa6b7fe9 CH |
1520 | fi = &kvm->arch.float_int; |
1521 | spin_lock(&fi->lock); | |
6d3da241 JF |
1522 | if (fi->counters[FIRQ_CNTR_IO] >= KVM_S390_MAX_FLOAT_IRQS) { |
1523 | spin_unlock(&fi->lock); | |
1524 | return -EBUSY; | |
a91b8ebe | 1525 | } |
6d3da241 JF |
1526 | fi->counters[FIRQ_CNTR_IO] += 1; |
1527 | ||
dcc98ea6 CB |
1528 | if (inti->type & KVM_S390_INT_IO_AI_MASK) |
1529 | VM_EVENT(kvm, 4, "%s", "inject: I/O (AI)"); | |
1530 | else | |
1531 | VM_EVENT(kvm, 4, "inject: I/O %x ss %x schid %04x", | |
1532 | inti->io.subchannel_id >> 8, | |
1533 | inti->io.subchannel_id >> 1 & 0x3, | |
1534 | inti->io.subchannel_nr); | |
6d3da241 JF |
1535 | isc = int_word_to_isc(inti->io.io_int_word); |
1536 | list = &fi->lists[FIRQ_LIST_IO_ISC_0 + isc]; | |
1537 | list_add_tail(&inti->list, list); | |
ee739f4b | 1538 | set_bit(isc_to_irq_type(isc), &fi->pending_irqs); |
fa6b7fe9 | 1539 | spin_unlock(&fi->lock); |
6d3da241 | 1540 | return 0; |
fa6b7fe9 | 1541 | } |
ba5c1e9b | 1542 | |
96e0ed23 DH |
1543 | /* |
1544 | * Find a destination VCPU for a floating irq and kick it. | |
1545 | */ | |
1546 | static void __floating_irq_kick(struct kvm *kvm, u64 type) | |
ba5c1e9b | 1547 | { |
96e0ed23 | 1548 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; |
180c12fb | 1549 | struct kvm_s390_local_interrupt *li; |
96e0ed23 DH |
1550 | struct kvm_vcpu *dst_vcpu; |
1551 | int sigcpu, online_vcpus, nr_tries = 0; | |
1552 | ||
1553 | online_vcpus = atomic_read(&kvm->online_vcpus); | |
1554 | if (!online_vcpus) | |
1555 | return; | |
1556 | ||
1557 | /* find idle VCPUs first, then round robin */ | |
1558 | sigcpu = find_first_bit(fi->idle_mask, online_vcpus); | |
1559 | if (sigcpu == online_vcpus) { | |
1560 | do { | |
1561 | sigcpu = fi->next_rr_cpu; | |
1562 | fi->next_rr_cpu = (fi->next_rr_cpu + 1) % online_vcpus; | |
1563 | /* avoid endless loops if all vcpus are stopped */ | |
1564 | if (nr_tries++ >= online_vcpus) | |
1565 | return; | |
1566 | } while (is_vcpu_stopped(kvm_get_vcpu(kvm, sigcpu))); | |
1567 | } | |
1568 | dst_vcpu = kvm_get_vcpu(kvm, sigcpu); | |
1569 | ||
1570 | /* make the VCPU drop out of the SIE, or wake it up if sleeping */ | |
1571 | li = &dst_vcpu->arch.local_int; | |
1572 | spin_lock(&li->lock); | |
1573 | switch (type) { | |
1574 | case KVM_S390_MCHK: | |
805de8f4 | 1575 | atomic_or(CPUSTAT_STOP_INT, li->cpuflags); |
96e0ed23 DH |
1576 | break; |
1577 | case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX: | |
805de8f4 | 1578 | atomic_or(CPUSTAT_IO_INT, li->cpuflags); |
96e0ed23 DH |
1579 | break; |
1580 | default: | |
805de8f4 | 1581 | atomic_or(CPUSTAT_EXT_INT, li->cpuflags); |
96e0ed23 DH |
1582 | break; |
1583 | } | |
1584 | spin_unlock(&li->lock); | |
1585 | kvm_s390_vcpu_wakeup(dst_vcpu); | |
1586 | } | |
1587 | ||
1588 | static int __inject_vm(struct kvm *kvm, struct kvm_s390_interrupt_info *inti) | |
1589 | { | |
6d3da241 JF |
1590 | u64 type = READ_ONCE(inti->type); |
1591 | int rc; | |
ba5c1e9b | 1592 | |
6d3da241 JF |
1593 | switch (type) { |
1594 | case KVM_S390_MCHK: | |
1595 | rc = __inject_float_mchk(kvm, inti); | |
1596 | break; | |
1597 | case KVM_S390_INT_VIRTIO: | |
1598 | rc = __inject_virtio(kvm, inti); | |
1599 | break; | |
1600 | case KVM_S390_INT_SERVICE: | |
1601 | rc = __inject_service(kvm, inti); | |
1602 | break; | |
1603 | case KVM_S390_INT_PFAULT_DONE: | |
1604 | rc = __inject_pfault_done(kvm, inti); | |
1605 | break; | |
1606 | case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX: | |
1607 | rc = __inject_io(kvm, inti); | |
1608 | break; | |
1609 | default: | |
a91b8ebe | 1610 | rc = -EINVAL; |
c05c4186 | 1611 | } |
6d3da241 JF |
1612 | if (rc) |
1613 | return rc; | |
1614 | ||
96e0ed23 | 1615 | __floating_irq_kick(kvm, type); |
6d3da241 | 1616 | return 0; |
c05c4186 JF |
1617 | } |
1618 | ||
1619 | int kvm_s390_inject_vm(struct kvm *kvm, | |
1620 | struct kvm_s390_interrupt *s390int) | |
1621 | { | |
1622 | struct kvm_s390_interrupt_info *inti; | |
428d53be | 1623 | int rc; |
c05c4186 | 1624 | |
ba5c1e9b CO |
1625 | inti = kzalloc(sizeof(*inti), GFP_KERNEL); |
1626 | if (!inti) | |
1627 | return -ENOMEM; | |
1628 | ||
c05c4186 JF |
1629 | inti->type = s390int->type; |
1630 | switch (inti->type) { | |
ba5c1e9b | 1631 | case KVM_S390_INT_VIRTIO: |
33e19115 | 1632 | VM_EVENT(kvm, 5, "inject: virtio parm:%x,parm64:%llx", |
ba5c1e9b | 1633 | s390int->parm, s390int->parm64); |
ba5c1e9b CO |
1634 | inti->ext.ext_params = s390int->parm; |
1635 | inti->ext.ext_params2 = s390int->parm64; | |
1636 | break; | |
1637 | case KVM_S390_INT_SERVICE: | |
3f24ba15 | 1638 | VM_EVENT(kvm, 4, "inject: sclp parm:%x", s390int->parm); |
ba5c1e9b CO |
1639 | inti->ext.ext_params = s390int->parm; |
1640 | break; | |
3c038e6b | 1641 | case KVM_S390_INT_PFAULT_DONE: |
3c038e6b DD |
1642 | inti->ext.ext_params2 = s390int->parm64; |
1643 | break; | |
48a3e950 | 1644 | case KVM_S390_MCHK: |
3f24ba15 | 1645 | VM_EVENT(kvm, 3, "inject: machine check mcic 0x%llx", |
48a3e950 | 1646 | s390int->parm64); |
48a3e950 CH |
1647 | inti->mchk.cr14 = s390int->parm; /* upper bits are not used */ |
1648 | inti->mchk.mcic = s390int->parm64; | |
1649 | break; | |
d8346b7d | 1650 | case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX: |
d8346b7d CH |
1651 | inti->io.subchannel_id = s390int->parm >> 16; |
1652 | inti->io.subchannel_nr = s390int->parm & 0x0000ffffu; | |
1653 | inti->io.io_int_parm = s390int->parm64 >> 32; | |
1654 | inti->io.io_int_word = s390int->parm64 & 0x00000000ffffffffull; | |
1655 | break; | |
ba5c1e9b CO |
1656 | default: |
1657 | kfree(inti); | |
1658 | return -EINVAL; | |
1659 | } | |
ade38c31 CH |
1660 | trace_kvm_s390_inject_vm(s390int->type, s390int->parm, s390int->parm64, |
1661 | 2); | |
ba5c1e9b | 1662 | |
428d53be DH |
1663 | rc = __inject_vm(kvm, inti); |
1664 | if (rc) | |
1665 | kfree(inti); | |
1666 | return rc; | |
ba5c1e9b CO |
1667 | } |
1668 | ||
15462e37 | 1669 | int kvm_s390_reinject_io_int(struct kvm *kvm, |
2f32d4ea CH |
1670 | struct kvm_s390_interrupt_info *inti) |
1671 | { | |
15462e37 | 1672 | return __inject_vm(kvm, inti); |
2f32d4ea CH |
1673 | } |
1674 | ||
383d0b05 JF |
1675 | int s390int_to_s390irq(struct kvm_s390_interrupt *s390int, |
1676 | struct kvm_s390_irq *irq) | |
1677 | { | |
1678 | irq->type = s390int->type; | |
1679 | switch (irq->type) { | |
1680 | case KVM_S390_PROGRAM_INT: | |
1681 | if (s390int->parm & 0xffff0000) | |
1682 | return -EINVAL; | |
1683 | irq->u.pgm.code = s390int->parm; | |
1684 | break; | |
1685 | case KVM_S390_SIGP_SET_PREFIX: | |
1686 | irq->u.prefix.address = s390int->parm; | |
1687 | break; | |
2822545f DH |
1688 | case KVM_S390_SIGP_STOP: |
1689 | irq->u.stop.flags = s390int->parm; | |
1690 | break; | |
383d0b05 | 1691 | case KVM_S390_INT_EXTERNAL_CALL: |
94d1f564 | 1692 | if (s390int->parm & 0xffff0000) |
383d0b05 JF |
1693 | return -EINVAL; |
1694 | irq->u.extcall.code = s390int->parm; | |
1695 | break; | |
1696 | case KVM_S390_INT_EMERGENCY: | |
94d1f564 | 1697 | if (s390int->parm & 0xffff0000) |
383d0b05 JF |
1698 | return -EINVAL; |
1699 | irq->u.emerg.code = s390int->parm; | |
1700 | break; | |
1701 | case KVM_S390_MCHK: | |
1702 | irq->u.mchk.mcic = s390int->parm64; | |
1703 | break; | |
1704 | } | |
1705 | return 0; | |
1706 | } | |
1707 | ||
6cddd432 DH |
1708 | int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu) |
1709 | { | |
1710 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1711 | ||
1712 | return test_bit(IRQ_PEND_SIGP_STOP, &li->pending_irqs); | |
1713 | } | |
1714 | ||
1715 | void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu) | |
1716 | { | |
1717 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1718 | ||
1719 | spin_lock(&li->lock); | |
1720 | li->irq.stop.flags = 0; | |
1721 | clear_bit(IRQ_PEND_SIGP_STOP, &li->pending_irqs); | |
1722 | spin_unlock(&li->lock); | |
1723 | } | |
1724 | ||
79e87a10 | 1725 | static int do_inject_vcpu(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) |
ba5c1e9b | 1726 | { |
0146a7b0 | 1727 | int rc; |
ba5c1e9b | 1728 | |
383d0b05 | 1729 | switch (irq->type) { |
ba5c1e9b | 1730 | case KVM_S390_PROGRAM_INT: |
383d0b05 | 1731 | rc = __inject_prog(vcpu, irq); |
ba5c1e9b | 1732 | break; |
b7e6e4d3 | 1733 | case KVM_S390_SIGP_SET_PREFIX: |
383d0b05 | 1734 | rc = __inject_set_prefix(vcpu, irq); |
b7e6e4d3 | 1735 | break; |
ba5c1e9b | 1736 | case KVM_S390_SIGP_STOP: |
383d0b05 | 1737 | rc = __inject_sigp_stop(vcpu, irq); |
0146a7b0 | 1738 | break; |
ba5c1e9b | 1739 | case KVM_S390_RESTART: |
383d0b05 | 1740 | rc = __inject_sigp_restart(vcpu, irq); |
0146a7b0 | 1741 | break; |
e029ae5b | 1742 | case KVM_S390_INT_CLOCK_COMP: |
383d0b05 | 1743 | rc = __inject_ckc(vcpu); |
0146a7b0 | 1744 | break; |
e029ae5b | 1745 | case KVM_S390_INT_CPU_TIMER: |
383d0b05 | 1746 | rc = __inject_cpu_timer(vcpu); |
82a12737 | 1747 | break; |
7697e71f | 1748 | case KVM_S390_INT_EXTERNAL_CALL: |
383d0b05 | 1749 | rc = __inject_extcall(vcpu, irq); |
82a12737 | 1750 | break; |
ba5c1e9b | 1751 | case KVM_S390_INT_EMERGENCY: |
383d0b05 | 1752 | rc = __inject_sigp_emergency(vcpu, irq); |
ba5c1e9b | 1753 | break; |
48a3e950 | 1754 | case KVM_S390_MCHK: |
383d0b05 | 1755 | rc = __inject_mchk(vcpu, irq); |
48a3e950 | 1756 | break; |
3c038e6b | 1757 | case KVM_S390_INT_PFAULT_INIT: |
383d0b05 | 1758 | rc = __inject_pfault_init(vcpu, irq); |
3c038e6b | 1759 | break; |
ba5c1e9b CO |
1760 | case KVM_S390_INT_VIRTIO: |
1761 | case KVM_S390_INT_SERVICE: | |
d8346b7d | 1762 | case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX: |
ba5c1e9b | 1763 | default: |
0146a7b0 | 1764 | rc = -EINVAL; |
ba5c1e9b | 1765 | } |
79e87a10 JF |
1766 | |
1767 | return rc; | |
1768 | } | |
1769 | ||
1770 | int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) | |
1771 | { | |
1772 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
1773 | int rc; | |
1774 | ||
1775 | spin_lock(&li->lock); | |
1776 | rc = do_inject_vcpu(vcpu, irq); | |
4ae3c081 | 1777 | spin_unlock(&li->lock); |
0146a7b0 JF |
1778 | if (!rc) |
1779 | kvm_s390_vcpu_wakeup(vcpu); | |
0146a7b0 | 1780 | return rc; |
ba5c1e9b | 1781 | } |
c05c4186 | 1782 | |
6d3da241 | 1783 | static inline void clear_irq_list(struct list_head *_list) |
c05c4186 | 1784 | { |
6d3da241 | 1785 | struct kvm_s390_interrupt_info *inti, *n; |
c05c4186 | 1786 | |
6d3da241 | 1787 | list_for_each_entry_safe(inti, n, _list, list) { |
c05c4186 JF |
1788 | list_del(&inti->list); |
1789 | kfree(inti); | |
1790 | } | |
c05c4186 JF |
1791 | } |
1792 | ||
94aa033e JF |
1793 | static void inti_to_irq(struct kvm_s390_interrupt_info *inti, |
1794 | struct kvm_s390_irq *irq) | |
c05c4186 | 1795 | { |
94aa033e | 1796 | irq->type = inti->type; |
c05c4186 | 1797 | switch (inti->type) { |
3c038e6b DD |
1798 | case KVM_S390_INT_PFAULT_INIT: |
1799 | case KVM_S390_INT_PFAULT_DONE: | |
c05c4186 | 1800 | case KVM_S390_INT_VIRTIO: |
94aa033e | 1801 | irq->u.ext = inti->ext; |
c05c4186 JF |
1802 | break; |
1803 | case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX: | |
94aa033e | 1804 | irq->u.io = inti->io; |
c05c4186 | 1805 | break; |
c05c4186 | 1806 | } |
c05c4186 JF |
1807 | } |
1808 | ||
6d3da241 JF |
1809 | void kvm_s390_clear_float_irqs(struct kvm *kvm) |
1810 | { | |
1811 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
1812 | int i; | |
1813 | ||
1814 | spin_lock(&fi->lock); | |
f2ae45ed JF |
1815 | fi->pending_irqs = 0; |
1816 | memset(&fi->srv_signal, 0, sizeof(fi->srv_signal)); | |
1817 | memset(&fi->mchk, 0, sizeof(fi->mchk)); | |
6d3da241 JF |
1818 | for (i = 0; i < FIRQ_LIST_COUNT; i++) |
1819 | clear_irq_list(&fi->lists[i]); | |
1820 | for (i = 0; i < FIRQ_MAX_COUNT; i++) | |
1821 | fi->counters[i] = 0; | |
1822 | spin_unlock(&fi->lock); | |
1823 | }; | |
1824 | ||
94aa033e | 1825 | static int get_all_floating_irqs(struct kvm *kvm, u8 __user *usrbuf, u64 len) |
c05c4186 JF |
1826 | { |
1827 | struct kvm_s390_interrupt_info *inti; | |
1828 | struct kvm_s390_float_interrupt *fi; | |
94aa033e | 1829 | struct kvm_s390_irq *buf; |
6d3da241 | 1830 | struct kvm_s390_irq *irq; |
94aa033e | 1831 | int max_irqs; |
c05c4186 JF |
1832 | int ret = 0; |
1833 | int n = 0; | |
6d3da241 | 1834 | int i; |
c05c4186 | 1835 | |
94aa033e JF |
1836 | if (len > KVM_S390_FLIC_MAX_BUFFER || len == 0) |
1837 | return -EINVAL; | |
1838 | ||
1839 | /* | |
1840 | * We are already using -ENOMEM to signal | |
1841 | * userspace it may retry with a bigger buffer, | |
1842 | * so we need to use something else for this case | |
1843 | */ | |
1844 | buf = vzalloc(len); | |
1845 | if (!buf) | |
1846 | return -ENOBUFS; | |
1847 | ||
1848 | max_irqs = len / sizeof(struct kvm_s390_irq); | |
1849 | ||
c05c4186 JF |
1850 | fi = &kvm->arch.float_int; |
1851 | spin_lock(&fi->lock); | |
6d3da241 JF |
1852 | for (i = 0; i < FIRQ_LIST_COUNT; i++) { |
1853 | list_for_each_entry(inti, &fi->lists[i], list) { | |
1854 | if (n == max_irqs) { | |
1855 | /* signal userspace to try again */ | |
1856 | ret = -ENOMEM; | |
1857 | goto out; | |
1858 | } | |
1859 | inti_to_irq(inti, &buf[n]); | |
1860 | n++; | |
1861 | } | |
1862 | } | |
1863 | if (test_bit(IRQ_PEND_EXT_SERVICE, &fi->pending_irqs)) { | |
94aa033e | 1864 | if (n == max_irqs) { |
c05c4186 JF |
1865 | /* signal userspace to try again */ |
1866 | ret = -ENOMEM; | |
6d3da241 | 1867 | goto out; |
c05c4186 | 1868 | } |
6d3da241 JF |
1869 | irq = (struct kvm_s390_irq *) &buf[n]; |
1870 | irq->type = KVM_S390_INT_SERVICE; | |
1871 | irq->u.ext = fi->srv_signal; | |
c05c4186 JF |
1872 | n++; |
1873 | } | |
6d3da241 JF |
1874 | if (test_bit(IRQ_PEND_MCHK_REP, &fi->pending_irqs)) { |
1875 | if (n == max_irqs) { | |
1876 | /* signal userspace to try again */ | |
1877 | ret = -ENOMEM; | |
1878 | goto out; | |
1879 | } | |
1880 | irq = (struct kvm_s390_irq *) &buf[n]; | |
1881 | irq->type = KVM_S390_MCHK; | |
1882 | irq->u.mchk = fi->mchk; | |
1883 | n++; | |
1884 | } | |
1885 | ||
1886 | out: | |
c05c4186 | 1887 | spin_unlock(&fi->lock); |
94aa033e JF |
1888 | if (!ret && n > 0) { |
1889 | if (copy_to_user(usrbuf, buf, sizeof(struct kvm_s390_irq) * n)) | |
1890 | ret = -EFAULT; | |
1891 | } | |
1892 | vfree(buf); | |
c05c4186 JF |
1893 | |
1894 | return ret < 0 ? ret : n; | |
1895 | } | |
1896 | ||
2c1a48f2 YMZ |
1897 | static int flic_ais_mode_get_all(struct kvm *kvm, struct kvm_device_attr *attr) |
1898 | { | |
1899 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
1900 | struct kvm_s390_ais_all ais; | |
1901 | ||
1902 | if (attr->attr < sizeof(ais)) | |
1903 | return -EINVAL; | |
1904 | ||
1905 | if (!test_kvm_facility(kvm, 72)) | |
1906 | return -ENOTSUPP; | |
1907 | ||
1908 | mutex_lock(&fi->ais_lock); | |
1909 | ais.simm = fi->simm; | |
1910 | ais.nimm = fi->nimm; | |
1911 | mutex_unlock(&fi->ais_lock); | |
1912 | ||
1913 | if (copy_to_user((void __user *)attr->addr, &ais, sizeof(ais))) | |
1914 | return -EFAULT; | |
1915 | ||
1916 | return 0; | |
1917 | } | |
1918 | ||
c05c4186 JF |
1919 | static int flic_get_attr(struct kvm_device *dev, struct kvm_device_attr *attr) |
1920 | { | |
1921 | int r; | |
1922 | ||
1923 | switch (attr->group) { | |
1924 | case KVM_DEV_FLIC_GET_ALL_IRQS: | |
94aa033e | 1925 | r = get_all_floating_irqs(dev->kvm, (u8 __user *) attr->addr, |
c05c4186 JF |
1926 | attr->attr); |
1927 | break; | |
2c1a48f2 YMZ |
1928 | case KVM_DEV_FLIC_AISM_ALL: |
1929 | r = flic_ais_mode_get_all(dev->kvm, attr); | |
1930 | break; | |
c05c4186 JF |
1931 | default: |
1932 | r = -EINVAL; | |
1933 | } | |
1934 | ||
1935 | return r; | |
1936 | } | |
1937 | ||
1938 | static inline int copy_irq_from_user(struct kvm_s390_interrupt_info *inti, | |
1939 | u64 addr) | |
1940 | { | |
1941 | struct kvm_s390_irq __user *uptr = (struct kvm_s390_irq __user *) addr; | |
1942 | void *target = NULL; | |
1943 | void __user *source; | |
1944 | u64 size; | |
1945 | ||
1946 | if (get_user(inti->type, (u64 __user *)addr)) | |
1947 | return -EFAULT; | |
1948 | ||
1949 | switch (inti->type) { | |
3c038e6b DD |
1950 | case KVM_S390_INT_PFAULT_INIT: |
1951 | case KVM_S390_INT_PFAULT_DONE: | |
c05c4186 JF |
1952 | case KVM_S390_INT_VIRTIO: |
1953 | case KVM_S390_INT_SERVICE: | |
1954 | target = (void *) &inti->ext; | |
1955 | source = &uptr->u.ext; | |
1956 | size = sizeof(inti->ext); | |
1957 | break; | |
1958 | case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX: | |
1959 | target = (void *) &inti->io; | |
1960 | source = &uptr->u.io; | |
1961 | size = sizeof(inti->io); | |
1962 | break; | |
1963 | case KVM_S390_MCHK: | |
1964 | target = (void *) &inti->mchk; | |
1965 | source = &uptr->u.mchk; | |
1966 | size = sizeof(inti->mchk); | |
1967 | break; | |
1968 | default: | |
1969 | return -EINVAL; | |
1970 | } | |
1971 | ||
1972 | if (copy_from_user(target, source, size)) | |
1973 | return -EFAULT; | |
1974 | ||
1975 | return 0; | |
1976 | } | |
1977 | ||
1978 | static int enqueue_floating_irq(struct kvm_device *dev, | |
1979 | struct kvm_device_attr *attr) | |
1980 | { | |
1981 | struct kvm_s390_interrupt_info *inti = NULL; | |
1982 | int r = 0; | |
1983 | int len = attr->attr; | |
1984 | ||
1985 | if (len % sizeof(struct kvm_s390_irq) != 0) | |
1986 | return -EINVAL; | |
1987 | else if (len > KVM_S390_FLIC_MAX_BUFFER) | |
1988 | return -EINVAL; | |
1989 | ||
1990 | while (len >= sizeof(struct kvm_s390_irq)) { | |
1991 | inti = kzalloc(sizeof(*inti), GFP_KERNEL); | |
1992 | if (!inti) | |
1993 | return -ENOMEM; | |
1994 | ||
1995 | r = copy_irq_from_user(inti, attr->addr); | |
1996 | if (r) { | |
1997 | kfree(inti); | |
1998 | return r; | |
1999 | } | |
a91b8ebe JF |
2000 | r = __inject_vm(dev->kvm, inti); |
2001 | if (r) { | |
2002 | kfree(inti); | |
2003 | return r; | |
2004 | } | |
c05c4186 JF |
2005 | len -= sizeof(struct kvm_s390_irq); |
2006 | attr->addr += sizeof(struct kvm_s390_irq); | |
2007 | } | |
2008 | ||
2009 | return r; | |
2010 | } | |
2011 | ||
841b91c5 CH |
2012 | static struct s390_io_adapter *get_io_adapter(struct kvm *kvm, unsigned int id) |
2013 | { | |
2014 | if (id >= MAX_S390_IO_ADAPTERS) | |
2015 | return NULL; | |
2016 | return kvm->arch.adapters[id]; | |
2017 | } | |
2018 | ||
2019 | static int register_io_adapter(struct kvm_device *dev, | |
2020 | struct kvm_device_attr *attr) | |
2021 | { | |
2022 | struct s390_io_adapter *adapter; | |
2023 | struct kvm_s390_io_adapter adapter_info; | |
2024 | ||
2025 | if (copy_from_user(&adapter_info, | |
2026 | (void __user *)attr->addr, sizeof(adapter_info))) | |
2027 | return -EFAULT; | |
2028 | ||
2029 | if ((adapter_info.id >= MAX_S390_IO_ADAPTERS) || | |
2030 | (dev->kvm->arch.adapters[adapter_info.id] != NULL)) | |
2031 | return -EINVAL; | |
2032 | ||
2033 | adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); | |
2034 | if (!adapter) | |
2035 | return -ENOMEM; | |
2036 | ||
2037 | INIT_LIST_HEAD(&adapter->maps); | |
2038 | init_rwsem(&adapter->maps_lock); | |
2039 | atomic_set(&adapter->nr_maps, 0); | |
2040 | adapter->id = adapter_info.id; | |
2041 | adapter->isc = adapter_info.isc; | |
2042 | adapter->maskable = adapter_info.maskable; | |
2043 | adapter->masked = false; | |
2044 | adapter->swap = adapter_info.swap; | |
08fab50d FL |
2045 | adapter->suppressible = (adapter_info.flags) & |
2046 | KVM_S390_ADAPTER_SUPPRESSIBLE; | |
841b91c5 CH |
2047 | dev->kvm->arch.adapters[adapter->id] = adapter; |
2048 | ||
2049 | return 0; | |
2050 | } | |
2051 | ||
2052 | int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked) | |
2053 | { | |
2054 | int ret; | |
2055 | struct s390_io_adapter *adapter = get_io_adapter(kvm, id); | |
2056 | ||
2057 | if (!adapter || !adapter->maskable) | |
2058 | return -EINVAL; | |
2059 | ret = adapter->masked; | |
2060 | adapter->masked = masked; | |
2061 | return ret; | |
2062 | } | |
2063 | ||
2064 | static int kvm_s390_adapter_map(struct kvm *kvm, unsigned int id, __u64 addr) | |
2065 | { | |
2066 | struct s390_io_adapter *adapter = get_io_adapter(kvm, id); | |
2067 | struct s390_map_info *map; | |
2068 | int ret; | |
2069 | ||
2070 | if (!adapter || !addr) | |
2071 | return -EINVAL; | |
2072 | ||
2073 | map = kzalloc(sizeof(*map), GFP_KERNEL); | |
2074 | if (!map) { | |
2075 | ret = -ENOMEM; | |
2076 | goto out; | |
2077 | } | |
2078 | INIT_LIST_HEAD(&map->list); | |
2079 | map->guest_addr = addr; | |
6e0a0431 | 2080 | map->addr = gmap_translate(kvm->arch.gmap, addr); |
841b91c5 CH |
2081 | if (map->addr == -EFAULT) { |
2082 | ret = -EFAULT; | |
2083 | goto out; | |
2084 | } | |
2085 | ret = get_user_pages_fast(map->addr, 1, 1, &map->page); | |
2086 | if (ret < 0) | |
2087 | goto out; | |
2088 | BUG_ON(ret != 1); | |
2089 | down_write(&adapter->maps_lock); | |
2090 | if (atomic_inc_return(&adapter->nr_maps) < MAX_S390_ADAPTER_MAPS) { | |
2091 | list_add_tail(&map->list, &adapter->maps); | |
2092 | ret = 0; | |
2093 | } else { | |
2094 | put_page(map->page); | |
2095 | ret = -EINVAL; | |
2096 | } | |
2097 | up_write(&adapter->maps_lock); | |
2098 | out: | |
2099 | if (ret) | |
2100 | kfree(map); | |
2101 | return ret; | |
2102 | } | |
2103 | ||
2104 | static int kvm_s390_adapter_unmap(struct kvm *kvm, unsigned int id, __u64 addr) | |
2105 | { | |
2106 | struct s390_io_adapter *adapter = get_io_adapter(kvm, id); | |
2107 | struct s390_map_info *map, *tmp; | |
2108 | int found = 0; | |
2109 | ||
2110 | if (!adapter || !addr) | |
2111 | return -EINVAL; | |
2112 | ||
2113 | down_write(&adapter->maps_lock); | |
2114 | list_for_each_entry_safe(map, tmp, &adapter->maps, list) { | |
2115 | if (map->guest_addr == addr) { | |
2116 | found = 1; | |
2117 | atomic_dec(&adapter->nr_maps); | |
2118 | list_del(&map->list); | |
2119 | put_page(map->page); | |
2120 | kfree(map); | |
2121 | break; | |
2122 | } | |
2123 | } | |
2124 | up_write(&adapter->maps_lock); | |
2125 | ||
2126 | return found ? 0 : -EINVAL; | |
2127 | } | |
2128 | ||
2129 | void kvm_s390_destroy_adapters(struct kvm *kvm) | |
2130 | { | |
2131 | int i; | |
2132 | struct s390_map_info *map, *tmp; | |
2133 | ||
2134 | for (i = 0; i < MAX_S390_IO_ADAPTERS; i++) { | |
2135 | if (!kvm->arch.adapters[i]) | |
2136 | continue; | |
2137 | list_for_each_entry_safe(map, tmp, | |
2138 | &kvm->arch.adapters[i]->maps, list) { | |
2139 | list_del(&map->list); | |
2140 | put_page(map->page); | |
2141 | kfree(map); | |
2142 | } | |
2143 | kfree(kvm->arch.adapters[i]); | |
2144 | } | |
2145 | } | |
2146 | ||
2147 | static int modify_io_adapter(struct kvm_device *dev, | |
2148 | struct kvm_device_attr *attr) | |
2149 | { | |
2150 | struct kvm_s390_io_adapter_req req; | |
2151 | struct s390_io_adapter *adapter; | |
2152 | int ret; | |
2153 | ||
2154 | if (copy_from_user(&req, (void __user *)attr->addr, sizeof(req))) | |
2155 | return -EFAULT; | |
2156 | ||
2157 | adapter = get_io_adapter(dev->kvm, req.id); | |
2158 | if (!adapter) | |
2159 | return -EINVAL; | |
2160 | switch (req.type) { | |
2161 | case KVM_S390_IO_ADAPTER_MASK: | |
2162 | ret = kvm_s390_mask_adapter(dev->kvm, req.id, req.mask); | |
2163 | if (ret > 0) | |
2164 | ret = 0; | |
2165 | break; | |
2166 | case KVM_S390_IO_ADAPTER_MAP: | |
2167 | ret = kvm_s390_adapter_map(dev->kvm, req.id, req.addr); | |
2168 | break; | |
2169 | case KVM_S390_IO_ADAPTER_UNMAP: | |
2170 | ret = kvm_s390_adapter_unmap(dev->kvm, req.id, req.addr); | |
2171 | break; | |
2172 | default: | |
2173 | ret = -EINVAL; | |
2174 | } | |
2175 | ||
2176 | return ret; | |
2177 | } | |
2178 | ||
6d28f789 HP |
2179 | static int clear_io_irq(struct kvm *kvm, struct kvm_device_attr *attr) |
2180 | ||
2181 | { | |
2182 | const u64 isc_mask = 0xffUL << 24; /* all iscs set */ | |
2183 | u32 schid; | |
2184 | ||
2185 | if (attr->flags) | |
2186 | return -EINVAL; | |
2187 | if (attr->attr != sizeof(schid)) | |
2188 | return -EINVAL; | |
2189 | if (copy_from_user(&schid, (void __user *) attr->addr, sizeof(schid))) | |
2190 | return -EFAULT; | |
4dd6f17e MM |
2191 | if (!schid) |
2192 | return -EINVAL; | |
6d28f789 HP |
2193 | kfree(kvm_s390_get_io_int(kvm, isc_mask, schid)); |
2194 | /* | |
2195 | * If userspace is conforming to the architecture, we can have at most | |
2196 | * one pending I/O interrupt per subchannel, so this is effectively a | |
2197 | * clear all. | |
2198 | */ | |
2199 | return 0; | |
2200 | } | |
2201 | ||
51978393 FL |
2202 | static int modify_ais_mode(struct kvm *kvm, struct kvm_device_attr *attr) |
2203 | { | |
2204 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
2205 | struct kvm_s390_ais_req req; | |
2206 | int ret = 0; | |
2207 | ||
1ba15b24 | 2208 | if (!test_kvm_facility(kvm, 72)) |
51978393 FL |
2209 | return -ENOTSUPP; |
2210 | ||
2211 | if (copy_from_user(&req, (void __user *)attr->addr, sizeof(req))) | |
2212 | return -EFAULT; | |
2213 | ||
2214 | if (req.isc > MAX_ISC) | |
2215 | return -EINVAL; | |
2216 | ||
2217 | trace_kvm_s390_modify_ais_mode(req.isc, | |
2218 | (fi->simm & AIS_MODE_MASK(req.isc)) ? | |
2219 | (fi->nimm & AIS_MODE_MASK(req.isc)) ? | |
2220 | 2 : KVM_S390_AIS_MODE_SINGLE : | |
2221 | KVM_S390_AIS_MODE_ALL, req.mode); | |
2222 | ||
2223 | mutex_lock(&fi->ais_lock); | |
2224 | switch (req.mode) { | |
2225 | case KVM_S390_AIS_MODE_ALL: | |
2226 | fi->simm &= ~AIS_MODE_MASK(req.isc); | |
2227 | fi->nimm &= ~AIS_MODE_MASK(req.isc); | |
2228 | break; | |
2229 | case KVM_S390_AIS_MODE_SINGLE: | |
2230 | fi->simm |= AIS_MODE_MASK(req.isc); | |
2231 | fi->nimm &= ~AIS_MODE_MASK(req.isc); | |
2232 | break; | |
2233 | default: | |
2234 | ret = -EINVAL; | |
2235 | } | |
2236 | mutex_unlock(&fi->ais_lock); | |
2237 | ||
2238 | return ret; | |
2239 | } | |
2240 | ||
a8920950 YMZ |
2241 | static int kvm_s390_inject_airq(struct kvm *kvm, |
2242 | struct s390_io_adapter *adapter) | |
2243 | { | |
2244 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
2245 | struct kvm_s390_interrupt s390int = { | |
2246 | .type = KVM_S390_INT_IO(1, 0, 0, 0), | |
2247 | .parm = 0, | |
2248 | .parm64 = (adapter->isc << 27) | 0x80000000, | |
2249 | }; | |
2250 | int ret = 0; | |
2251 | ||
1ba15b24 | 2252 | if (!test_kvm_facility(kvm, 72) || !adapter->suppressible) |
a8920950 YMZ |
2253 | return kvm_s390_inject_vm(kvm, &s390int); |
2254 | ||
2255 | mutex_lock(&fi->ais_lock); | |
2256 | if (fi->nimm & AIS_MODE_MASK(adapter->isc)) { | |
2257 | trace_kvm_s390_airq_suppressed(adapter->id, adapter->isc); | |
2258 | goto out; | |
2259 | } | |
2260 | ||
2261 | ret = kvm_s390_inject_vm(kvm, &s390int); | |
2262 | if (!ret && (fi->simm & AIS_MODE_MASK(adapter->isc))) { | |
2263 | fi->nimm |= AIS_MODE_MASK(adapter->isc); | |
2264 | trace_kvm_s390_modify_ais_mode(adapter->isc, | |
2265 | KVM_S390_AIS_MODE_SINGLE, 2); | |
2266 | } | |
2267 | out: | |
2268 | mutex_unlock(&fi->ais_lock); | |
2269 | return ret; | |
2270 | } | |
2271 | ||
2272 | static int flic_inject_airq(struct kvm *kvm, struct kvm_device_attr *attr) | |
2273 | { | |
2274 | unsigned int id = attr->attr; | |
2275 | struct s390_io_adapter *adapter = get_io_adapter(kvm, id); | |
2276 | ||
2277 | if (!adapter) | |
2278 | return -EINVAL; | |
2279 | ||
2280 | return kvm_s390_inject_airq(kvm, adapter); | |
2281 | } | |
2282 | ||
2c1a48f2 YMZ |
2283 | static int flic_ais_mode_set_all(struct kvm *kvm, struct kvm_device_attr *attr) |
2284 | { | |
2285 | struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; | |
2286 | struct kvm_s390_ais_all ais; | |
2287 | ||
2288 | if (!test_kvm_facility(kvm, 72)) | |
2289 | return -ENOTSUPP; | |
2290 | ||
2291 | if (copy_from_user(&ais, (void __user *)attr->addr, sizeof(ais))) | |
2292 | return -EFAULT; | |
2293 | ||
2294 | mutex_lock(&fi->ais_lock); | |
2295 | fi->simm = ais.simm; | |
2296 | fi->nimm = ais.nimm; | |
2297 | mutex_unlock(&fi->ais_lock); | |
2298 | ||
2299 | return 0; | |
2300 | } | |
2301 | ||
c05c4186 JF |
2302 | static int flic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr) |
2303 | { | |
2304 | int r = 0; | |
3c038e6b DD |
2305 | unsigned int i; |
2306 | struct kvm_vcpu *vcpu; | |
c05c4186 JF |
2307 | |
2308 | switch (attr->group) { | |
2309 | case KVM_DEV_FLIC_ENQUEUE: | |
2310 | r = enqueue_floating_irq(dev, attr); | |
2311 | break; | |
2312 | case KVM_DEV_FLIC_CLEAR_IRQS: | |
67335e63 | 2313 | kvm_s390_clear_float_irqs(dev->kvm); |
c05c4186 | 2314 | break; |
3c038e6b DD |
2315 | case KVM_DEV_FLIC_APF_ENABLE: |
2316 | dev->kvm->arch.gmap->pfault_enabled = 1; | |
2317 | break; | |
2318 | case KVM_DEV_FLIC_APF_DISABLE_WAIT: | |
2319 | dev->kvm->arch.gmap->pfault_enabled = 0; | |
2320 | /* | |
2321 | * Make sure no async faults are in transition when | |
2322 | * clearing the queues. So we don't need to worry | |
2323 | * about late coming workers. | |
2324 | */ | |
2325 | synchronize_srcu(&dev->kvm->srcu); | |
2326 | kvm_for_each_vcpu(i, vcpu, dev->kvm) | |
2327 | kvm_clear_async_pf_completion_queue(vcpu); | |
2328 | break; | |
841b91c5 CH |
2329 | case KVM_DEV_FLIC_ADAPTER_REGISTER: |
2330 | r = register_io_adapter(dev, attr); | |
2331 | break; | |
2332 | case KVM_DEV_FLIC_ADAPTER_MODIFY: | |
2333 | r = modify_io_adapter(dev, attr); | |
2334 | break; | |
6d28f789 HP |
2335 | case KVM_DEV_FLIC_CLEAR_IO_IRQ: |
2336 | r = clear_io_irq(dev->kvm, attr); | |
2337 | break; | |
51978393 FL |
2338 | case KVM_DEV_FLIC_AISM: |
2339 | r = modify_ais_mode(dev->kvm, attr); | |
2340 | break; | |
a8920950 YMZ |
2341 | case KVM_DEV_FLIC_AIRQ_INJECT: |
2342 | r = flic_inject_airq(dev->kvm, attr); | |
2343 | break; | |
2c1a48f2 YMZ |
2344 | case KVM_DEV_FLIC_AISM_ALL: |
2345 | r = flic_ais_mode_set_all(dev->kvm, attr); | |
2346 | break; | |
c05c4186 JF |
2347 | default: |
2348 | r = -EINVAL; | |
2349 | } | |
2350 | ||
2351 | return r; | |
2352 | } | |
2353 | ||
4f129858 HP |
2354 | static int flic_has_attr(struct kvm_device *dev, |
2355 | struct kvm_device_attr *attr) | |
2356 | { | |
2357 | switch (attr->group) { | |
2358 | case KVM_DEV_FLIC_GET_ALL_IRQS: | |
2359 | case KVM_DEV_FLIC_ENQUEUE: | |
2360 | case KVM_DEV_FLIC_CLEAR_IRQS: | |
2361 | case KVM_DEV_FLIC_APF_ENABLE: | |
2362 | case KVM_DEV_FLIC_APF_DISABLE_WAIT: | |
2363 | case KVM_DEV_FLIC_ADAPTER_REGISTER: | |
2364 | case KVM_DEV_FLIC_ADAPTER_MODIFY: | |
6d28f789 | 2365 | case KVM_DEV_FLIC_CLEAR_IO_IRQ: |
51978393 | 2366 | case KVM_DEV_FLIC_AISM: |
a8920950 | 2367 | case KVM_DEV_FLIC_AIRQ_INJECT: |
2c1a48f2 | 2368 | case KVM_DEV_FLIC_AISM_ALL: |
4f129858 HP |
2369 | return 0; |
2370 | } | |
2371 | return -ENXIO; | |
2372 | } | |
2373 | ||
c05c4186 JF |
2374 | static int flic_create(struct kvm_device *dev, u32 type) |
2375 | { | |
2376 | if (!dev) | |
2377 | return -EINVAL; | |
2378 | if (dev->kvm->arch.flic) | |
2379 | return -EINVAL; | |
2380 | dev->kvm->arch.flic = dev; | |
2381 | return 0; | |
2382 | } | |
2383 | ||
2384 | static void flic_destroy(struct kvm_device *dev) | |
2385 | { | |
2386 | dev->kvm->arch.flic = NULL; | |
2387 | kfree(dev); | |
2388 | } | |
2389 | ||
2390 | /* s390 floating irq controller (flic) */ | |
2391 | struct kvm_device_ops kvm_flic_ops = { | |
2392 | .name = "kvm-flic", | |
2393 | .get_attr = flic_get_attr, | |
2394 | .set_attr = flic_set_attr, | |
4f129858 | 2395 | .has_attr = flic_has_attr, |
c05c4186 JF |
2396 | .create = flic_create, |
2397 | .destroy = flic_destroy, | |
2398 | }; | |
84223598 CH |
2399 | |
2400 | static unsigned long get_ind_bit(__u64 addr, unsigned long bit_nr, bool swap) | |
2401 | { | |
2402 | unsigned long bit; | |
2403 | ||
2404 | bit = bit_nr + (addr % PAGE_SIZE) * 8; | |
2405 | ||
2406 | return swap ? (bit ^ (BITS_PER_LONG - 1)) : bit; | |
2407 | } | |
2408 | ||
2409 | static struct s390_map_info *get_map_info(struct s390_io_adapter *adapter, | |
2410 | u64 addr) | |
2411 | { | |
2412 | struct s390_map_info *map; | |
2413 | ||
2414 | if (!adapter) | |
2415 | return NULL; | |
2416 | ||
2417 | list_for_each_entry(map, &adapter->maps, list) { | |
2418 | if (map->guest_addr == addr) | |
2419 | return map; | |
2420 | } | |
2421 | return NULL; | |
2422 | } | |
2423 | ||
2424 | static int adapter_indicators_set(struct kvm *kvm, | |
2425 | struct s390_io_adapter *adapter, | |
2426 | struct kvm_s390_adapter_int *adapter_int) | |
2427 | { | |
2428 | unsigned long bit; | |
2429 | int summary_set, idx; | |
2430 | struct s390_map_info *info; | |
2431 | void *map; | |
2432 | ||
2433 | info = get_map_info(adapter, adapter_int->ind_addr); | |
2434 | if (!info) | |
2435 | return -1; | |
2436 | map = page_address(info->page); | |
2437 | bit = get_ind_bit(info->addr, adapter_int->ind_offset, adapter->swap); | |
2438 | set_bit(bit, map); | |
2439 | idx = srcu_read_lock(&kvm->srcu); | |
2440 | mark_page_dirty(kvm, info->guest_addr >> PAGE_SHIFT); | |
2441 | set_page_dirty_lock(info->page); | |
2442 | info = get_map_info(adapter, adapter_int->summary_addr); | |
2443 | if (!info) { | |
2444 | srcu_read_unlock(&kvm->srcu, idx); | |
2445 | return -1; | |
2446 | } | |
2447 | map = page_address(info->page); | |
2448 | bit = get_ind_bit(info->addr, adapter_int->summary_offset, | |
2449 | adapter->swap); | |
2450 | summary_set = test_and_set_bit(bit, map); | |
2451 | mark_page_dirty(kvm, info->guest_addr >> PAGE_SHIFT); | |
2452 | set_page_dirty_lock(info->page); | |
2453 | srcu_read_unlock(&kvm->srcu, idx); | |
2454 | return summary_set ? 0 : 1; | |
2455 | } | |
2456 | ||
2457 | /* | |
2458 | * < 0 - not injected due to error | |
2459 | * = 0 - coalesced, summary indicator already active | |
2460 | * > 0 - injected interrupt | |
2461 | */ | |
2462 | static int set_adapter_int(struct kvm_kernel_irq_routing_entry *e, | |
2463 | struct kvm *kvm, int irq_source_id, int level, | |
2464 | bool line_status) | |
2465 | { | |
2466 | int ret; | |
2467 | struct s390_io_adapter *adapter; | |
2468 | ||
2469 | /* We're only interested in the 0->1 transition. */ | |
2470 | if (!level) | |
2471 | return 0; | |
2472 | adapter = get_io_adapter(kvm, e->adapter.adapter_id); | |
2473 | if (!adapter) | |
2474 | return -1; | |
2475 | down_read(&adapter->maps_lock); | |
2476 | ret = adapter_indicators_set(kvm, adapter, &e->adapter); | |
2477 | up_read(&adapter->maps_lock); | |
2478 | if ((ret > 0) && !adapter->masked) { | |
a8920950 | 2479 | ret = kvm_s390_inject_airq(kvm, adapter); |
84223598 CH |
2480 | if (ret == 0) |
2481 | ret = 1; | |
2482 | } | |
2483 | return ret; | |
2484 | } | |
2485 | ||
4d62fcc0 QH |
2486 | /* |
2487 | * Inject the machine check to the guest. | |
2488 | */ | |
2489 | void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu, | |
2490 | struct mcck_volatile_info *mcck_info) | |
2491 | { | |
2492 | struct kvm_s390_interrupt_info inti; | |
2493 | struct kvm_s390_irq irq; | |
2494 | struct kvm_s390_mchk_info *mchk; | |
2495 | union mci mci; | |
2496 | __u64 cr14 = 0; /* upper bits are not used */ | |
3dbf0205 | 2497 | int rc; |
4d62fcc0 QH |
2498 | |
2499 | mci.val = mcck_info->mcic; | |
2500 | if (mci.sr) | |
cc65450c | 2501 | cr14 |= CR14_RECOVERY_SUBMASK; |
4d62fcc0 | 2502 | if (mci.dg) |
cc65450c | 2503 | cr14 |= CR14_DEGRADATION_SUBMASK; |
4d62fcc0 | 2504 | if (mci.w) |
cc65450c | 2505 | cr14 |= CR14_WARNING_SUBMASK; |
4d62fcc0 QH |
2506 | |
2507 | mchk = mci.ck ? &inti.mchk : &irq.u.mchk; | |
2508 | mchk->cr14 = cr14; | |
2509 | mchk->mcic = mcck_info->mcic; | |
2510 | mchk->ext_damage_code = mcck_info->ext_damage_code; | |
2511 | mchk->failing_storage_address = mcck_info->failing_storage_address; | |
2512 | if (mci.ck) { | |
2513 | /* Inject the floating machine check */ | |
2514 | inti.type = KVM_S390_MCHK; | |
3dbf0205 | 2515 | rc = __inject_vm(vcpu->kvm, &inti); |
4d62fcc0 QH |
2516 | } else { |
2517 | /* Inject the machine check to specified vcpu */ | |
2518 | irq.type = KVM_S390_MCHK; | |
3dbf0205 | 2519 | rc = kvm_s390_inject_vcpu(vcpu, &irq); |
4d62fcc0 | 2520 | } |
3dbf0205 | 2521 | WARN_ON_ONCE(rc); |
4d62fcc0 QH |
2522 | } |
2523 | ||
c63cf538 RK |
2524 | int kvm_set_routing_entry(struct kvm *kvm, |
2525 | struct kvm_kernel_irq_routing_entry *e, | |
84223598 CH |
2526 | const struct kvm_irq_routing_entry *ue) |
2527 | { | |
2528 | int ret; | |
2529 | ||
2530 | switch (ue->type) { | |
2531 | case KVM_IRQ_ROUTING_S390_ADAPTER: | |
2532 | e->set = set_adapter_int; | |
2533 | e->adapter.summary_addr = ue->u.adapter.summary_addr; | |
2534 | e->adapter.ind_addr = ue->u.adapter.ind_addr; | |
2535 | e->adapter.summary_offset = ue->u.adapter.summary_offset; | |
2536 | e->adapter.ind_offset = ue->u.adapter.ind_offset; | |
2537 | e->adapter.adapter_id = ue->u.adapter.adapter_id; | |
2538 | ret = 0; | |
2539 | break; | |
2540 | default: | |
2541 | ret = -EINVAL; | |
2542 | } | |
2543 | ||
2544 | return ret; | |
2545 | } | |
2546 | ||
2547 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, struct kvm *kvm, | |
2548 | int irq_source_id, int level, bool line_status) | |
2549 | { | |
2550 | return -EINVAL; | |
2551 | } | |
816c7667 JF |
2552 | |
2553 | int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu, void __user *irqstate, int len) | |
2554 | { | |
2555 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
2556 | struct kvm_s390_irq *buf; | |
2557 | int r = 0; | |
2558 | int n; | |
2559 | ||
2560 | buf = vmalloc(len); | |
2561 | if (!buf) | |
2562 | return -ENOMEM; | |
2563 | ||
2564 | if (copy_from_user((void *) buf, irqstate, len)) { | |
2565 | r = -EFAULT; | |
2566 | goto out_free; | |
2567 | } | |
2568 | ||
2569 | /* | |
2570 | * Don't allow setting the interrupt state | |
2571 | * when there are already interrupts pending | |
2572 | */ | |
2573 | spin_lock(&li->lock); | |
2574 | if (li->pending_irqs) { | |
2575 | r = -EBUSY; | |
2576 | goto out_unlock; | |
2577 | } | |
2578 | ||
2579 | for (n = 0; n < len / sizeof(*buf); n++) { | |
2580 | r = do_inject_vcpu(vcpu, &buf[n]); | |
2581 | if (r) | |
2582 | break; | |
2583 | } | |
2584 | ||
2585 | out_unlock: | |
2586 | spin_unlock(&li->lock); | |
2587 | out_free: | |
2588 | vfree(buf); | |
2589 | ||
2590 | return r; | |
2591 | } | |
2592 | ||
2593 | static void store_local_irq(struct kvm_s390_local_interrupt *li, | |
2594 | struct kvm_s390_irq *irq, | |
2595 | unsigned long irq_type) | |
2596 | { | |
2597 | switch (irq_type) { | |
2598 | case IRQ_PEND_MCHK_EX: | |
2599 | case IRQ_PEND_MCHK_REP: | |
2600 | irq->type = KVM_S390_MCHK; | |
2601 | irq->u.mchk = li->irq.mchk; | |
2602 | break; | |
2603 | case IRQ_PEND_PROG: | |
2604 | irq->type = KVM_S390_PROGRAM_INT; | |
2605 | irq->u.pgm = li->irq.pgm; | |
2606 | break; | |
2607 | case IRQ_PEND_PFAULT_INIT: | |
2608 | irq->type = KVM_S390_INT_PFAULT_INIT; | |
2609 | irq->u.ext = li->irq.ext; | |
2610 | break; | |
2611 | case IRQ_PEND_EXT_EXTERNAL: | |
2612 | irq->type = KVM_S390_INT_EXTERNAL_CALL; | |
2613 | irq->u.extcall = li->irq.extcall; | |
2614 | break; | |
2615 | case IRQ_PEND_EXT_CLOCK_COMP: | |
2616 | irq->type = KVM_S390_INT_CLOCK_COMP; | |
2617 | break; | |
2618 | case IRQ_PEND_EXT_CPU_TIMER: | |
2619 | irq->type = KVM_S390_INT_CPU_TIMER; | |
2620 | break; | |
2621 | case IRQ_PEND_SIGP_STOP: | |
2622 | irq->type = KVM_S390_SIGP_STOP; | |
2623 | irq->u.stop = li->irq.stop; | |
2624 | break; | |
2625 | case IRQ_PEND_RESTART: | |
2626 | irq->type = KVM_S390_RESTART; | |
2627 | break; | |
2628 | case IRQ_PEND_SET_PREFIX: | |
2629 | irq->type = KVM_S390_SIGP_SET_PREFIX; | |
2630 | irq->u.prefix = li->irq.prefix; | |
2631 | break; | |
2632 | } | |
2633 | } | |
2634 | ||
2635 | int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, __u8 __user *buf, int len) | |
2636 | { | |
a5bd7647 | 2637 | int scn; |
816c7667 JF |
2638 | unsigned long sigp_emerg_pending[BITS_TO_LONGS(KVM_MAX_VCPUS)]; |
2639 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; | |
2640 | unsigned long pending_irqs; | |
2641 | struct kvm_s390_irq irq; | |
2642 | unsigned long irq_type; | |
2643 | int cpuaddr; | |
2644 | int n = 0; | |
2645 | ||
2646 | spin_lock(&li->lock); | |
2647 | pending_irqs = li->pending_irqs; | |
2648 | memcpy(&sigp_emerg_pending, &li->sigp_emerg_pending, | |
2649 | sizeof(sigp_emerg_pending)); | |
2650 | spin_unlock(&li->lock); | |
2651 | ||
2652 | for_each_set_bit(irq_type, &pending_irqs, IRQ_PEND_COUNT) { | |
2653 | memset(&irq, 0, sizeof(irq)); | |
2654 | if (irq_type == IRQ_PEND_EXT_EMERGENCY) | |
2655 | continue; | |
2656 | if (n + sizeof(irq) > len) | |
2657 | return -ENOBUFS; | |
2658 | store_local_irq(&vcpu->arch.local_int, &irq, irq_type); | |
2659 | if (copy_to_user(&buf[n], &irq, sizeof(irq))) | |
2660 | return -EFAULT; | |
2661 | n += sizeof(irq); | |
2662 | } | |
2663 | ||
2664 | if (test_bit(IRQ_PEND_EXT_EMERGENCY, &pending_irqs)) { | |
2665 | for_each_set_bit(cpuaddr, sigp_emerg_pending, KVM_MAX_VCPUS) { | |
2666 | memset(&irq, 0, sizeof(irq)); | |
2667 | if (n + sizeof(irq) > len) | |
2668 | return -ENOBUFS; | |
2669 | irq.type = KVM_S390_INT_EMERGENCY; | |
2670 | irq.u.emerg.code = cpuaddr; | |
2671 | if (copy_to_user(&buf[n], &irq, sizeof(irq))) | |
2672 | return -EFAULT; | |
2673 | n += sizeof(irq); | |
2674 | } | |
2675 | } | |
2676 | ||
a5bd7647 | 2677 | if (sca_ext_call_pending(vcpu, &scn)) { |
816c7667 JF |
2678 | if (n + sizeof(irq) > len) |
2679 | return -ENOBUFS; | |
2680 | memset(&irq, 0, sizeof(irq)); | |
2681 | irq.type = KVM_S390_INT_EXTERNAL_CALL; | |
a5bd7647 | 2682 | irq.u.extcall.code = scn; |
816c7667 JF |
2683 | if (copy_to_user(&buf[n], &irq, sizeof(irq))) |
2684 | return -EFAULT; | |
2685 | n += sizeof(irq); | |
2686 | } | |
2687 | ||
2688 | return n; | |
2689 | } |