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Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2007
Scott Wood4cd35f62011-06-14 18:34:31 -050016 * Copyright 2010-2011 Freescale Semiconductor, Inc.
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050017 *
18 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
19 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Scott Woodd30f6e42011-12-20 15:34:43 +000020 * Scott Wood <scottwood@freescale.com>
21 * Varun Sethi <varun.sethi@freescale.com>
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050022 */
23
24#include <linux/errno.h>
25#include <linux/err.h>
26#include <linux/kvm_host.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090027#include <linux/gfp.h>
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050028#include <linux/module.h>
29#include <linux/vmalloc.h>
30#include <linux/fs.h>
Hollis Blanchard7924bd42008-12-02 15:51:55 -060031
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050032#include <asm/cputable.h>
33#include <asm/uaccess.h>
34#include <asm/kvm_ppc.h>
Hollis Blanchardd9fbd032008-11-05 09:36:13 -060035#include <asm/cacheflush.h>
Scott Woodd30f6e42011-12-20 15:34:43 +000036#include <asm/dbell.h>
37#include <asm/hw_irq.h>
38#include <asm/irq.h>
Mihai Caramanb50df192012-10-11 06:13:19 +000039#include <asm/time.h>
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050040
Scott Woodd30f6e42011-12-20 15:34:43 +000041#include "timing.h"
Hollis Blanchard75f74f02008-11-05 09:36:16 -060042#include "booke.h"
Alexander Graf97c95052012-08-02 15:10:00 +020043#include "trace.h"
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050044
Hollis Blanchardd9fbd032008-11-05 09:36:13 -060045unsigned long kvmppc_booke_handlers;
46
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050047#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
48#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
49
50struct kvm_stats_debugfs_item debugfs_entries[] = {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050051 { "mmio", VCPU_STAT(mmio_exits) },
52 { "dcr", VCPU_STAT(dcr_exits) },
53 { "sig", VCPU_STAT(signal_exits) },
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050054 { "itlb_r", VCPU_STAT(itlb_real_miss_exits) },
55 { "itlb_v", VCPU_STAT(itlb_virt_miss_exits) },
56 { "dtlb_r", VCPU_STAT(dtlb_real_miss_exits) },
57 { "dtlb_v", VCPU_STAT(dtlb_virt_miss_exits) },
58 { "sysc", VCPU_STAT(syscall_exits) },
59 { "isi", VCPU_STAT(isi_exits) },
60 { "dsi", VCPU_STAT(dsi_exits) },
61 { "inst_emu", VCPU_STAT(emulated_inst_exits) },
62 { "dec", VCPU_STAT(dec_exits) },
63 { "ext_intr", VCPU_STAT(ext_intr_exits) },
Hollis Blanchard45c5eb62008-04-25 17:55:49 -050064 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
Scott Woodd30f6e42011-12-20 15:34:43 +000065 { "doorbell", VCPU_STAT(dbell_exits) },
66 { "guest doorbell", VCPU_STAT(gdbell_exits) },
Alexander Grafcf1c5ca2012-08-01 12:56:51 +020067 { "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050068 { NULL }
69};
70
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050071/* TODO: use vcpu_printf() */
72void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
73{
74 int i;
75
Alexander Graf666e7252010-07-29 14:47:43 +020076 printk("pc: %08lx msr: %08llx\n", vcpu->arch.pc, vcpu->arch.shared->msr);
Hollis Blanchard5cf8ca22008-11-05 09:36:19 -060077 printk("lr: %08lx ctr: %08lx\n", vcpu->arch.lr, vcpu->arch.ctr);
Alexander Grafde7906c2010-07-29 14:47:46 +020078 printk("srr0: %08llx srr1: %08llx\n", vcpu->arch.shared->srr0,
79 vcpu->arch.shared->srr1);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050080
81 printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);
82
83 for (i = 0; i < 32; i += 4) {
Hollis Blanchard5cf8ca22008-11-05 09:36:19 -060084 printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
Alexander Graf8e5b26b2010-01-08 02:58:01 +010085 kvmppc_get_gpr(vcpu, i),
86 kvmppc_get_gpr(vcpu, i+1),
87 kvmppc_get_gpr(vcpu, i+2),
88 kvmppc_get_gpr(vcpu, i+3));
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050089 }
90}
91
Scott Wood4cd35f62011-06-14 18:34:31 -050092#ifdef CONFIG_SPE
93void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu)
94{
95 preempt_disable();
96 enable_kernel_spe();
97 kvmppc_save_guest_spe(vcpu);
98 vcpu->arch.shadow_msr &= ~MSR_SPE;
99 preempt_enable();
100}
101
102static void kvmppc_vcpu_enable_spe(struct kvm_vcpu *vcpu)
103{
104 preempt_disable();
105 enable_kernel_spe();
106 kvmppc_load_guest_spe(vcpu);
107 vcpu->arch.shadow_msr |= MSR_SPE;
108 preempt_enable();
109}
110
111static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
112{
113 if (vcpu->arch.shared->msr & MSR_SPE) {
114 if (!(vcpu->arch.shadow_msr & MSR_SPE))
115 kvmppc_vcpu_enable_spe(vcpu);
116 } else if (vcpu->arch.shadow_msr & MSR_SPE) {
117 kvmppc_vcpu_disable_spe(vcpu);
118 }
119}
120#else
121static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
122{
123}
124#endif
125
Alexander Graf7a08c272012-08-16 13:10:16 +0200126static void kvmppc_vcpu_sync_fpu(struct kvm_vcpu *vcpu)
127{
128#if defined(CONFIG_PPC_FPU) && !defined(CONFIG_KVM_BOOKE_HV)
129 /* We always treat the FP bit as enabled from the host
130 perspective, so only need to adjust the shadow MSR */
131 vcpu->arch.shadow_msr &= ~MSR_FP;
132 vcpu->arch.shadow_msr |= vcpu->arch.shared->msr & MSR_FP;
133#endif
134}
135
Liu Yudd9ebf1f2011-06-14 18:35:14 -0500136/*
137 * Helper function for "full" MSR writes. No need to call this if only
138 * EE/CE/ME/DE/RI are changing.
139 */
Scott Wood4cd35f62011-06-14 18:34:31 -0500140void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
141{
Liu Yudd9ebf1f2011-06-14 18:35:14 -0500142 u32 old_msr = vcpu->arch.shared->msr;
Scott Wood4cd35f62011-06-14 18:34:31 -0500143
Scott Woodd30f6e42011-12-20 15:34:43 +0000144#ifdef CONFIG_KVM_BOOKE_HV
145 new_msr |= MSR_GS;
146#endif
147
Scott Wood4cd35f62011-06-14 18:34:31 -0500148 vcpu->arch.shared->msr = new_msr;
149
Liu Yudd9ebf1f2011-06-14 18:35:14 -0500150 kvmppc_mmu_msr_notify(vcpu, old_msr);
Scott Wood4cd35f62011-06-14 18:34:31 -0500151 kvmppc_vcpu_sync_spe(vcpu);
Alexander Graf7a08c272012-08-16 13:10:16 +0200152 kvmppc_vcpu_sync_fpu(vcpu);
Scott Wood4cd35f62011-06-14 18:34:31 -0500153}
154
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600155static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
156 unsigned int priority)
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600157{
Alexander Graf63460462012-08-08 00:44:52 +0200158 trace_kvm_booke_queue_irqprio(vcpu, priority);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600159 set_bit(priority, &vcpu->arch.pending_exceptions);
160}
161
Liu Yudaf5e272010-02-02 19:44:35 +0800162static void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu,
163 ulong dear_flags, ulong esr_flags)
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600164{
Liu Yudaf5e272010-02-02 19:44:35 +0800165 vcpu->arch.queued_dear = dear_flags;
166 vcpu->arch.queued_esr = esr_flags;
167 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
168}
169
170static void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
171 ulong dear_flags, ulong esr_flags)
172{
173 vcpu->arch.queued_dear = dear_flags;
174 vcpu->arch.queued_esr = esr_flags;
175 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
176}
177
178static void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
179 ulong esr_flags)
180{
181 vcpu->arch.queued_esr = esr_flags;
182 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
183}
184
Alexander Graf011da892013-01-31 14:17:38 +0100185static void kvmppc_core_queue_alignment(struct kvm_vcpu *vcpu, ulong dear_flags,
186 ulong esr_flags)
187{
188 vcpu->arch.queued_dear = dear_flags;
189 vcpu->arch.queued_esr = esr_flags;
190 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALIGNMENT);
191}
192
Liu Yudaf5e272010-02-02 19:44:35 +0800193void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags)
194{
195 vcpu->arch.queued_esr = esr_flags;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600196 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600197}
198
199void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
200{
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600201 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600202}
203
204int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
205{
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600206 return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600207}
208
Alexander Graf7706664d2009-12-21 20:21:24 +0100209void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
210{
211 clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
212}
213
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600214void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
215 struct kvm_interrupt *irq)
216{
Alexander Grafc5335f12010-08-30 14:03:24 +0200217 unsigned int prio = BOOKE_IRQPRIO_EXTERNAL;
218
219 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
220 prio = BOOKE_IRQPRIO_EXTERNAL_LEVEL;
221
222 kvmppc_booke_queue_irqprio(vcpu, prio);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600223}
224
Paul Mackerras4fe27d22013-02-14 14:00:25 +0000225void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
Alexander Graf4496f972010-04-07 10:03:25 +0200226{
227 clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions);
Alexander Grafc5335f12010-08-30 14:03:24 +0200228 clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions);
Alexander Graf4496f972010-04-07 10:03:25 +0200229}
230
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000231static void kvmppc_core_queue_watchdog(struct kvm_vcpu *vcpu)
232{
233 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_WATCHDOG);
234}
235
236static void kvmppc_core_dequeue_watchdog(struct kvm_vcpu *vcpu)
237{
238 clear_bit(BOOKE_IRQPRIO_WATCHDOG, &vcpu->arch.pending_exceptions);
239}
240
Scott Woodd30f6e42011-12-20 15:34:43 +0000241static void set_guest_srr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
242{
243#ifdef CONFIG_KVM_BOOKE_HV
244 mtspr(SPRN_GSRR0, srr0);
245 mtspr(SPRN_GSRR1, srr1);
246#else
247 vcpu->arch.shared->srr0 = srr0;
248 vcpu->arch.shared->srr1 = srr1;
249#endif
250}
251
252static void set_guest_csrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
253{
254 vcpu->arch.csrr0 = srr0;
255 vcpu->arch.csrr1 = srr1;
256}
257
258static void set_guest_dsrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
259{
260 if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC)) {
261 vcpu->arch.dsrr0 = srr0;
262 vcpu->arch.dsrr1 = srr1;
263 } else {
264 set_guest_csrr(vcpu, srr0, srr1);
265 }
266}
267
268static void set_guest_mcsrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
269{
270 vcpu->arch.mcsrr0 = srr0;
271 vcpu->arch.mcsrr1 = srr1;
272}
273
274static unsigned long get_guest_dear(struct kvm_vcpu *vcpu)
275{
276#ifdef CONFIG_KVM_BOOKE_HV
277 return mfspr(SPRN_GDEAR);
278#else
279 return vcpu->arch.shared->dar;
280#endif
281}
282
283static void set_guest_dear(struct kvm_vcpu *vcpu, unsigned long dear)
284{
285#ifdef CONFIG_KVM_BOOKE_HV
286 mtspr(SPRN_GDEAR, dear);
287#else
288 vcpu->arch.shared->dar = dear;
289#endif
290}
291
292static unsigned long get_guest_esr(struct kvm_vcpu *vcpu)
293{
294#ifdef CONFIG_KVM_BOOKE_HV
295 return mfspr(SPRN_GESR);
296#else
297 return vcpu->arch.shared->esr;
298#endif
299}
300
301static void set_guest_esr(struct kvm_vcpu *vcpu, u32 esr)
302{
303#ifdef CONFIG_KVM_BOOKE_HV
304 mtspr(SPRN_GESR, esr);
305#else
306 vcpu->arch.shared->esr = esr;
307#endif
308}
309
Alexander Graf324b3e62013-01-04 18:28:51 +0100310static unsigned long get_guest_epr(struct kvm_vcpu *vcpu)
311{
312#ifdef CONFIG_KVM_BOOKE_HV
313 return mfspr(SPRN_GEPR);
314#else
315 return vcpu->arch.epr;
316#endif
317}
318
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600319/* Deliver the interrupt of the corresponding priority, if possible. */
320static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
321 unsigned int priority)
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500322{
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600323 int allowed = 0;
Alexander Graf79300f82012-02-15 19:12:29 +0000324 ulong msr_mask = 0;
Alexander Graf1c810632013-01-04 18:12:48 +0100325 bool update_esr = false, update_dear = false, update_epr = false;
Alexander Graf5c6cedf2010-07-29 14:47:49 +0200326 ulong crit_raw = vcpu->arch.shared->critical;
327 ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
328 bool crit;
Alexander Grafc5335f12010-08-30 14:03:24 +0200329 bool keep_irq = false;
Scott Woodd30f6e42011-12-20 15:34:43 +0000330 enum int_class int_class;
Mihai Caraman95e90b42012-10-11 06:13:26 +0000331 ulong new_msr = vcpu->arch.shared->msr;
Alexander Graf5c6cedf2010-07-29 14:47:49 +0200332
333 /* Truncate crit indicators in 32 bit mode */
334 if (!(vcpu->arch.shared->msr & MSR_SF)) {
335 crit_raw &= 0xffffffff;
336 crit_r1 &= 0xffffffff;
337 }
338
339 /* Critical section when crit == r1 */
340 crit = (crit_raw == crit_r1);
341 /* ... and we're in supervisor mode */
342 crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500343
Alexander Grafc5335f12010-08-30 14:03:24 +0200344 if (priority == BOOKE_IRQPRIO_EXTERNAL_LEVEL) {
345 priority = BOOKE_IRQPRIO_EXTERNAL;
346 keep_irq = true;
347 }
348
Alexander Graf1c810632013-01-04 18:12:48 +0100349 if ((priority == BOOKE_IRQPRIO_EXTERNAL) && vcpu->arch.epr_enabled)
350 update_epr = true;
351
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600352 switch (priority) {
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600353 case BOOKE_IRQPRIO_DTLB_MISS:
Liu Yudaf5e272010-02-02 19:44:35 +0800354 case BOOKE_IRQPRIO_DATA_STORAGE:
Alexander Graf011da892013-01-31 14:17:38 +0100355 case BOOKE_IRQPRIO_ALIGNMENT:
Liu Yudaf5e272010-02-02 19:44:35 +0800356 update_dear = true;
357 /* fall through */
358 case BOOKE_IRQPRIO_INST_STORAGE:
359 case BOOKE_IRQPRIO_PROGRAM:
360 update_esr = true;
361 /* fall through */
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600362 case BOOKE_IRQPRIO_ITLB_MISS:
363 case BOOKE_IRQPRIO_SYSCALL:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600364 case BOOKE_IRQPRIO_FP_UNAVAIL:
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600365 case BOOKE_IRQPRIO_SPE_UNAVAIL:
366 case BOOKE_IRQPRIO_SPE_FP_DATA:
367 case BOOKE_IRQPRIO_SPE_FP_ROUND:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600368 case BOOKE_IRQPRIO_AP_UNAVAIL:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600369 allowed = 1;
Alexander Graf79300f82012-02-15 19:12:29 +0000370 msr_mask = MSR_CE | MSR_ME | MSR_DE;
Scott Woodd30f6e42011-12-20 15:34:43 +0000371 int_class = INT_CLASS_NONCRIT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500372 break;
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000373 case BOOKE_IRQPRIO_WATCHDOG:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600374 case BOOKE_IRQPRIO_CRITICAL:
Alexander Graf4ab96912012-02-15 13:28:48 +0000375 case BOOKE_IRQPRIO_DBELL_CRIT:
Alexander Graf666e7252010-07-29 14:47:43 +0200376 allowed = vcpu->arch.shared->msr & MSR_CE;
Scott Woodd30f6e42011-12-20 15:34:43 +0000377 allowed = allowed && !crit;
Alexander Graf79300f82012-02-15 19:12:29 +0000378 msr_mask = MSR_ME;
Scott Woodd30f6e42011-12-20 15:34:43 +0000379 int_class = INT_CLASS_CRIT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500380 break;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600381 case BOOKE_IRQPRIO_MACHINE_CHECK:
Alexander Graf666e7252010-07-29 14:47:43 +0200382 allowed = vcpu->arch.shared->msr & MSR_ME;
Scott Woodd30f6e42011-12-20 15:34:43 +0000383 allowed = allowed && !crit;
Scott Woodd30f6e42011-12-20 15:34:43 +0000384 int_class = INT_CLASS_MC;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500385 break;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600386 case BOOKE_IRQPRIO_DECREMENTER:
387 case BOOKE_IRQPRIO_FIT:
Scott Wooddfd4d472011-11-17 12:39:59 +0000388 keep_irq = true;
389 /* fall through */
390 case BOOKE_IRQPRIO_EXTERNAL:
Alexander Graf4ab96912012-02-15 13:28:48 +0000391 case BOOKE_IRQPRIO_DBELL:
Alexander Graf666e7252010-07-29 14:47:43 +0200392 allowed = vcpu->arch.shared->msr & MSR_EE;
Alexander Graf5c6cedf2010-07-29 14:47:49 +0200393 allowed = allowed && !crit;
Alexander Graf79300f82012-02-15 19:12:29 +0000394 msr_mask = MSR_CE | MSR_ME | MSR_DE;
Scott Woodd30f6e42011-12-20 15:34:43 +0000395 int_class = INT_CLASS_NONCRIT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500396 break;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600397 case BOOKE_IRQPRIO_DEBUG:
Alexander Graf666e7252010-07-29 14:47:43 +0200398 allowed = vcpu->arch.shared->msr & MSR_DE;
Scott Woodd30f6e42011-12-20 15:34:43 +0000399 allowed = allowed && !crit;
Alexander Graf79300f82012-02-15 19:12:29 +0000400 msr_mask = MSR_ME;
Scott Woodd30f6e42011-12-20 15:34:43 +0000401 int_class = INT_CLASS_CRIT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500402 break;
403 }
404
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600405 if (allowed) {
Scott Woodd30f6e42011-12-20 15:34:43 +0000406 switch (int_class) {
407 case INT_CLASS_NONCRIT:
408 set_guest_srr(vcpu, vcpu->arch.pc,
409 vcpu->arch.shared->msr);
410 break;
411 case INT_CLASS_CRIT:
412 set_guest_csrr(vcpu, vcpu->arch.pc,
413 vcpu->arch.shared->msr);
414 break;
415 case INT_CLASS_DBG:
416 set_guest_dsrr(vcpu, vcpu->arch.pc,
417 vcpu->arch.shared->msr);
418 break;
419 case INT_CLASS_MC:
420 set_guest_mcsrr(vcpu, vcpu->arch.pc,
421 vcpu->arch.shared->msr);
422 break;
423 }
424
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600425 vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[priority];
Liu Yudaf5e272010-02-02 19:44:35 +0800426 if (update_esr == true)
Scott Woodd30f6e42011-12-20 15:34:43 +0000427 set_guest_esr(vcpu, vcpu->arch.queued_esr);
Liu Yudaf5e272010-02-02 19:44:35 +0800428 if (update_dear == true)
Scott Woodd30f6e42011-12-20 15:34:43 +0000429 set_guest_dear(vcpu, vcpu->arch.queued_dear);
Alexander Graf1c810632013-01-04 18:12:48 +0100430 if (update_epr == true)
431 kvm_make_request(KVM_REQ_EPR_EXIT, vcpu);
Mihai Caraman95e90b42012-10-11 06:13:26 +0000432
433 new_msr &= msr_mask;
434#if defined(CONFIG_64BIT)
435 if (vcpu->arch.epcr & SPRN_EPCR_ICM)
436 new_msr |= MSR_CM;
437#endif
438 kvmppc_set_msr(vcpu, new_msr);
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600439
Alexander Grafc5335f12010-08-30 14:03:24 +0200440 if (!keep_irq)
441 clear_bit(priority, &vcpu->arch.pending_exceptions);
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600442 }
443
Scott Woodd30f6e42011-12-20 15:34:43 +0000444#ifdef CONFIG_KVM_BOOKE_HV
445 /*
446 * If an interrupt is pending but masked, raise a guest doorbell
447 * so that we are notified when the guest enables the relevant
448 * MSR bit.
449 */
450 if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_EE)
451 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_NONCRIT);
452 if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_CE)
453 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_CRIT);
454 if (vcpu->arch.pending_exceptions & BOOKE_IRQPRIO_MACHINE_CHECK)
455 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_MC);
456#endif
457
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600458 return allowed;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500459}
460
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000461/*
462 * Return the number of jiffies until the next timeout. If the timeout is
463 * longer than the NEXT_TIMER_MAX_DELTA, then return NEXT_TIMER_MAX_DELTA
464 * because the larger value can break the timer APIs.
465 */
466static unsigned long watchdog_next_timeout(struct kvm_vcpu *vcpu)
467{
468 u64 tb, wdt_tb, wdt_ticks = 0;
469 u64 nr_jiffies = 0;
470 u32 period = TCR_GET_WP(vcpu->arch.tcr);
471
472 wdt_tb = 1ULL << (63 - period);
473 tb = get_tb();
474 /*
475 * The watchdog timeout will hapeen when TB bit corresponding
476 * to watchdog will toggle from 0 to 1.
477 */
478 if (tb & wdt_tb)
479 wdt_ticks = wdt_tb;
480
481 wdt_ticks += wdt_tb - (tb & (wdt_tb - 1));
482
483 /* Convert timebase ticks to jiffies */
484 nr_jiffies = wdt_ticks;
485
486 if (do_div(nr_jiffies, tb_ticks_per_jiffy))
487 nr_jiffies++;
488
489 return min_t(unsigned long long, nr_jiffies, NEXT_TIMER_MAX_DELTA);
490}
491
492static void arm_next_watchdog(struct kvm_vcpu *vcpu)
493{
494 unsigned long nr_jiffies;
495 unsigned long flags;
496
497 /*
498 * If TSR_ENW and TSR_WIS are not set then no need to exit to
499 * userspace, so clear the KVM_REQ_WATCHDOG request.
500 */
501 if ((vcpu->arch.tsr & (TSR_ENW | TSR_WIS)) != (TSR_ENW | TSR_WIS))
502 clear_bit(KVM_REQ_WATCHDOG, &vcpu->requests);
503
504 spin_lock_irqsave(&vcpu->arch.wdt_lock, flags);
505 nr_jiffies = watchdog_next_timeout(vcpu);
506 /*
507 * If the number of jiffies of watchdog timer >= NEXT_TIMER_MAX_DELTA
508 * then do not run the watchdog timer as this can break timer APIs.
509 */
510 if (nr_jiffies < NEXT_TIMER_MAX_DELTA)
511 mod_timer(&vcpu->arch.wdt_timer, jiffies + nr_jiffies);
512 else
513 del_timer(&vcpu->arch.wdt_timer);
514 spin_unlock_irqrestore(&vcpu->arch.wdt_lock, flags);
515}
516
517void kvmppc_watchdog_func(unsigned long data)
518{
519 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
520 u32 tsr, new_tsr;
521 int final;
522
523 do {
524 new_tsr = tsr = vcpu->arch.tsr;
525 final = 0;
526
527 /* Time out event */
528 if (tsr & TSR_ENW) {
529 if (tsr & TSR_WIS)
530 final = 1;
531 else
532 new_tsr = tsr | TSR_WIS;
533 } else {
534 new_tsr = tsr | TSR_ENW;
535 }
536 } while (cmpxchg(&vcpu->arch.tsr, tsr, new_tsr) != tsr);
537
538 if (new_tsr & TSR_WIS) {
539 smp_wmb();
540 kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
541 kvm_vcpu_kick(vcpu);
542 }
543
544 /*
545 * If this is final watchdog expiry and some action is required
546 * then exit to userspace.
547 */
548 if (final && (vcpu->arch.tcr & TCR_WRC_MASK) &&
549 vcpu->arch.watchdog_enabled) {
550 smp_wmb();
551 kvm_make_request(KVM_REQ_WATCHDOG, vcpu);
552 kvm_vcpu_kick(vcpu);
553 }
554
555 /*
556 * Stop running the watchdog timer after final expiration to
557 * prevent the host from being flooded with timers if the
558 * guest sets a short period.
559 * Timers will resume when TSR/TCR is updated next time.
560 */
561 if (!final)
562 arm_next_watchdog(vcpu);
563}
564
Scott Wooddfd4d472011-11-17 12:39:59 +0000565static void update_timer_ints(struct kvm_vcpu *vcpu)
566{
567 if ((vcpu->arch.tcr & TCR_DIE) && (vcpu->arch.tsr & TSR_DIS))
568 kvmppc_core_queue_dec(vcpu);
569 else
570 kvmppc_core_dequeue_dec(vcpu);
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000571
572 if ((vcpu->arch.tcr & TCR_WIE) && (vcpu->arch.tsr & TSR_WIS))
573 kvmppc_core_queue_watchdog(vcpu);
574 else
575 kvmppc_core_dequeue_watchdog(vcpu);
Scott Wooddfd4d472011-11-17 12:39:59 +0000576}
577
Scott Woodc59a6a32011-11-08 18:23:25 -0600578static void kvmppc_core_check_exceptions(struct kvm_vcpu *vcpu)
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500579{
580 unsigned long *pending = &vcpu->arch.pending_exceptions;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500581 unsigned int priority;
582
Hollis Blanchard9ab80842008-11-05 09:36:22 -0600583 priority = __ffs(*pending);
Alexander Graf8b3a00f2012-02-16 14:12:46 +0000584 while (priority < BOOKE_IRQPRIO_MAX) {
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600585 if (kvmppc_booke_irqprio_deliver(vcpu, priority))
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500586 break;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500587
588 priority = find_next_bit(pending,
589 BITS_PER_BYTE * sizeof(*pending),
590 priority + 1);
591 }
Alexander Graf90bba352010-07-29 14:47:51 +0200592
593 /* Tell the guest about our interrupt status */
Scott Wood29ac26e2011-11-08 18:23:27 -0600594 vcpu->arch.shared->int_pending = !!*pending;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500595}
596
Scott Woodc59a6a32011-11-08 18:23:25 -0600597/* Check pending exceptions and deliver one, if possible. */
Alexander Grafa8e4ef82012-02-16 14:07:37 +0000598int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
Scott Woodc59a6a32011-11-08 18:23:25 -0600599{
Alexander Grafa8e4ef82012-02-16 14:07:37 +0000600 int r = 0;
Scott Woodc59a6a32011-11-08 18:23:25 -0600601 WARN_ON_ONCE(!irqs_disabled());
602
603 kvmppc_core_check_exceptions(vcpu);
604
Alexander Grafb8c649a2012-12-20 04:52:39 +0000605 if (vcpu->requests) {
606 /* Exception delivery raised request; start over */
607 return 1;
608 }
609
Scott Woodc59a6a32011-11-08 18:23:25 -0600610 if (vcpu->arch.shared->msr & MSR_WE) {
611 local_irq_enable();
612 kvm_vcpu_block(vcpu);
Alexander Graf966cd0f2012-03-14 16:55:08 +0100613 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
Scott Woodc59a6a32011-11-08 18:23:25 -0600614 local_irq_disable();
615
616 kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
Alexander Grafa8e4ef82012-02-16 14:07:37 +0000617 r = 1;
Scott Woodc59a6a32011-11-08 18:23:25 -0600618 };
Alexander Grafa8e4ef82012-02-16 14:07:37 +0000619
620 return r;
621}
622
Alexander Graf7c973a22012-08-13 12:50:35 +0200623int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
Alexander Graf4ffc6352012-08-08 20:31:13 +0200624{
Alexander Graf7c973a22012-08-13 12:50:35 +0200625 int r = 1; /* Indicate we want to get back into the guest */
626
Alexander Graf2d8185d2012-08-10 12:31:12 +0200627 if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu))
628 update_timer_ints(vcpu);
Alexander Graf862d31f2012-07-31 00:19:50 +0200629#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
Alexander Graf2d8185d2012-08-10 12:31:12 +0200630 if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
631 kvmppc_core_flush_tlb(vcpu);
Alexander Graf862d31f2012-07-31 00:19:50 +0200632#endif
Alexander Graf7c973a22012-08-13 12:50:35 +0200633
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000634 if (kvm_check_request(KVM_REQ_WATCHDOG, vcpu)) {
635 vcpu->run->exit_reason = KVM_EXIT_WATCHDOG;
636 r = 0;
637 }
638
Alexander Graf1c810632013-01-04 18:12:48 +0100639 if (kvm_check_request(KVM_REQ_EPR_EXIT, vcpu)) {
640 vcpu->run->epr.epr = 0;
641 vcpu->arch.epr_needed = true;
642 vcpu->run->exit_reason = KVM_EXIT_EPR;
643 r = 0;
644 }
645
Alexander Graf7c973a22012-08-13 12:50:35 +0200646 return r;
Alexander Graf4ffc6352012-08-08 20:31:13 +0200647}
648
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000649int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
650{
Alexander Graf7ee78852012-08-13 12:44:41 +0200651 int ret, s;
Scott Wood8fae8452011-12-20 15:34:45 +0000652#ifdef CONFIG_PPC_FPU
653 unsigned int fpscr;
654 int fpexc_mode;
655 u64 fpr[32];
656#endif
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000657
Alexander Grafaf8f38b2011-08-10 13:57:08 +0200658 if (!vcpu->arch.sane) {
659 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
660 return -EINVAL;
661 }
662
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000663 local_irq_disable();
Alexander Graf7ee78852012-08-13 12:44:41 +0200664 s = kvmppc_prepare_to_enter(vcpu);
665 if (s <= 0) {
Alexander Graf24afa37b2012-08-12 12:42:30 +0200666 local_irq_enable();
Alexander Graf7ee78852012-08-13 12:44:41 +0200667 ret = s;
Scott Wood1d1ef222011-11-08 16:11:59 -0600668 goto out;
669 }
Alexander Grafbd2be682012-08-13 01:04:19 +0200670 kvmppc_lazy_ee_enable();
Scott Wood1d1ef222011-11-08 16:11:59 -0600671
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000672 kvm_guest_enter();
Scott Wood8fae8452011-12-20 15:34:45 +0000673
674#ifdef CONFIG_PPC_FPU
675 /* Save userspace FPU state in stack */
676 enable_kernel_fp();
677 memcpy(fpr, current->thread.fpr, sizeof(current->thread.fpr));
678 fpscr = current->thread.fpscr.val;
679 fpexc_mode = current->thread.fpexc_mode;
680
681 /* Restore guest FPU state to thread */
682 memcpy(current->thread.fpr, vcpu->arch.fpr, sizeof(vcpu->arch.fpr));
683 current->thread.fpscr.val = vcpu->arch.fpscr;
684
685 /*
686 * Since we can't trap on MSR_FP in GS-mode, we consider the guest
687 * as always using the FPU. Kernel usage of FP (via
688 * enable_kernel_fp()) in this thread must not occur while
689 * vcpu->fpu_active is set.
690 */
691 vcpu->fpu_active = 1;
692
693 kvmppc_load_guest_fp(vcpu);
694#endif
695
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000696 ret = __kvmppc_vcpu_run(kvm_run, vcpu);
Scott Wood8fae8452011-12-20 15:34:45 +0000697
Alexander Graf24afa37b2012-08-12 12:42:30 +0200698 /* No need for kvm_guest_exit. It's done in handle_exit.
699 We also get here with interrupts enabled. */
700
Scott Wood8fae8452011-12-20 15:34:45 +0000701#ifdef CONFIG_PPC_FPU
702 kvmppc_save_guest_fp(vcpu);
703
704 vcpu->fpu_active = 0;
705
706 /* Save guest FPU state from thread */
707 memcpy(vcpu->arch.fpr, current->thread.fpr, sizeof(vcpu->arch.fpr));
708 vcpu->arch.fpscr = current->thread.fpscr.val;
709
710 /* Restore userspace FPU state from stack */
711 memcpy(current->thread.fpr, fpr, sizeof(current->thread.fpr));
712 current->thread.fpscr.val = fpscr;
713 current->thread.fpexc_mode = fpexc_mode;
714#endif
715
Scott Wood1d1ef222011-11-08 16:11:59 -0600716out:
Alexander Grafd69c6432012-08-08 20:44:20 +0200717 vcpu->mode = OUTSIDE_GUEST_MODE;
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000718 return ret;
719}
720
Scott Woodd30f6e42011-12-20 15:34:43 +0000721static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
722{
723 enum emulation_result er;
724
725 er = kvmppc_emulate_instruction(run, vcpu);
726 switch (er) {
727 case EMULATE_DONE:
728 /* don't overwrite subtypes, just account kvm_stats */
729 kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
730 /* Future optimization: only reload non-volatiles if
731 * they were actually modified by emulation. */
732 return RESUME_GUEST_NV;
733
734 case EMULATE_DO_DCR:
735 run->exit_reason = KVM_EXIT_DCR;
736 return RESUME_HOST;
737
738 case EMULATE_FAIL:
Scott Woodd30f6e42011-12-20 15:34:43 +0000739 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
740 __func__, vcpu->arch.pc, vcpu->arch.last_inst);
741 /* For debugging, encode the failing instruction and
742 * report it to userspace. */
743 run->hw.hardware_exit_reason = ~0ULL << 32;
744 run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
Alexander Grafd1ff5492012-02-16 13:24:03 +0000745 kvmppc_core_queue_program(vcpu, ESR_PIL);
Scott Woodd30f6e42011-12-20 15:34:43 +0000746 return RESUME_HOST;
747
748 default:
749 BUG();
750 }
751}
752
Alexander Graf4e642cc2012-02-20 23:57:26 +0100753static void kvmppc_fill_pt_regs(struct pt_regs *regs)
754{
755 ulong r1, ip, msr, lr;
756
757 asm("mr %0, 1" : "=r"(r1));
758 asm("mflr %0" : "=r"(lr));
759 asm("mfmsr %0" : "=r"(msr));
760 asm("bl 1f; 1: mflr %0" : "=r"(ip));
761
762 memset(regs, 0, sizeof(*regs));
763 regs->gpr[1] = r1;
764 regs->nip = ip;
765 regs->msr = msr;
766 regs->link = lr;
767}
768
Bharat Bhushan6328e592012-06-20 05:56:53 +0000769/*
770 * For interrupts needed to be handled by host interrupt handlers,
771 * corresponding host handler are called from here in similar way
772 * (but not exact) as they are called from low level handler
773 * (such as from arch/powerpc/kernel/head_fsl_booke.S).
774 */
Alexander Graf4e642cc2012-02-20 23:57:26 +0100775static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu,
776 unsigned int exit_nr)
777{
778 struct pt_regs regs;
779
780 switch (exit_nr) {
781 case BOOKE_INTERRUPT_EXTERNAL:
782 kvmppc_fill_pt_regs(&regs);
783 do_IRQ(&regs);
784 break;
785 case BOOKE_INTERRUPT_DECREMENTER:
786 kvmppc_fill_pt_regs(&regs);
787 timer_interrupt(&regs);
788 break;
789#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_BOOK3E_64)
790 case BOOKE_INTERRUPT_DOORBELL:
791 kvmppc_fill_pt_regs(&regs);
792 doorbell_exception(&regs);
793 break;
794#endif
795 case BOOKE_INTERRUPT_MACHINE_CHECK:
796 /* FIXME */
797 break;
Alexander Graf7cc1e8e2012-02-22 16:26:34 +0100798 case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
799 kvmppc_fill_pt_regs(&regs);
800 performance_monitor_exception(&regs);
801 break;
Bharat Bhushan6328e592012-06-20 05:56:53 +0000802 case BOOKE_INTERRUPT_WATCHDOG:
803 kvmppc_fill_pt_regs(&regs);
804#ifdef CONFIG_BOOKE_WDT
805 WatchdogException(&regs);
806#else
807 unknown_exception(&regs);
808#endif
809 break;
810 case BOOKE_INTERRUPT_CRITICAL:
811 unknown_exception(&regs);
812 break;
Alexander Graf4e642cc2012-02-20 23:57:26 +0100813 }
814}
815
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500816/**
817 * kvmppc_handle_exit
818 *
819 * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
820 */
821int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
822 unsigned int exit_nr)
823{
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500824 int r = RESUME_HOST;
Alexander Graf7ee78852012-08-13 12:44:41 +0200825 int s;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500826
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600827 /* update before a new last_exit_type is rewritten */
828 kvmppc_update_timing_stats(vcpu);
829
Alexander Graf4e642cc2012-02-20 23:57:26 +0100830 /* restart interrupts if they were meant for the host */
831 kvmppc_restart_interrupt(vcpu, exit_nr);
Scott Woodd30f6e42011-12-20 15:34:43 +0000832
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500833 local_irq_enable();
834
Alexander Graf97c95052012-08-02 15:10:00 +0200835 trace_kvm_exit(exit_nr, vcpu);
Alexander Graf706fb732012-08-12 11:29:09 +0200836 kvm_guest_exit();
Alexander Graf97c95052012-08-02 15:10:00 +0200837
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500838 run->exit_reason = KVM_EXIT_UNKNOWN;
839 run->ready_for_interrupt_injection = 1;
840
841 switch (exit_nr) {
842 case BOOKE_INTERRUPT_MACHINE_CHECK:
Alexander Grafc35c9d82012-02-20 12:21:18 +0100843 printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
844 kvmppc_dump_vcpu(vcpu);
845 /* For debugging, send invalid exit reason to user space */
846 run->hw.hardware_exit_reason = ~1ULL << 32;
847 run->hw.hardware_exit_reason |= mfspr(SPRN_MCSR);
848 r = RESUME_HOST;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500849 break;
850
851 case BOOKE_INTERRUPT_EXTERNAL:
Hollis Blanchard7b701592008-12-02 15:51:58 -0600852 kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
Hollis Blanchard1b6766c2008-11-05 09:36:21 -0600853 r = RESUME_GUEST;
854 break;
855
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500856 case BOOKE_INTERRUPT_DECREMENTER:
Hollis Blanchard7b701592008-12-02 15:51:58 -0600857 kvmppc_account_exit(vcpu, DEC_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500858 r = RESUME_GUEST;
859 break;
860
Bharat Bhushan6328e592012-06-20 05:56:53 +0000861 case BOOKE_INTERRUPT_WATCHDOG:
862 r = RESUME_GUEST;
863 break;
864
Scott Woodd30f6e42011-12-20 15:34:43 +0000865 case BOOKE_INTERRUPT_DOORBELL:
866 kvmppc_account_exit(vcpu, DBELL_EXITS);
Scott Woodd30f6e42011-12-20 15:34:43 +0000867 r = RESUME_GUEST;
868 break;
869
870 case BOOKE_INTERRUPT_GUEST_DBELL_CRIT:
871 kvmppc_account_exit(vcpu, GDBELL_EXITS);
872
873 /*
874 * We are here because there is a pending guest interrupt
875 * which could not be delivered as MSR_CE or MSR_ME was not
876 * set. Once we break from here we will retry delivery.
877 */
878 r = RESUME_GUEST;
879 break;
880
881 case BOOKE_INTERRUPT_GUEST_DBELL:
882 kvmppc_account_exit(vcpu, GDBELL_EXITS);
883
884 /*
885 * We are here because there is a pending guest interrupt
886 * which could not be delivered as MSR_EE was not set. Once
887 * we break from here we will retry delivery.
888 */
889 r = RESUME_GUEST;
890 break;
891
Alexander Graf95f2e922012-02-20 22:45:12 +0100892 case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
893 r = RESUME_GUEST;
894 break;
895
Scott Woodd30f6e42011-12-20 15:34:43 +0000896 case BOOKE_INTERRUPT_HV_PRIV:
897 r = emulation_exit(run, vcpu);
898 break;
899
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500900 case BOOKE_INTERRUPT_PROGRAM:
Scott Woodd30f6e42011-12-20 15:34:43 +0000901 if (vcpu->arch.shared->msr & (MSR_PR | MSR_GS)) {
Alexander Graf0268597c2012-02-20 12:33:22 +0100902 /*
903 * Program traps generated by user-level software must
904 * be handled by the guest kernel.
905 *
906 * In GS mode, hypervisor privileged instructions trap
907 * on BOOKE_INTERRUPT_HV_PRIV, not here, so these are
908 * actual program interrupts, handled by the guest.
909 */
Liu Yudaf5e272010-02-02 19:44:35 +0800910 kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500911 r = RESUME_GUEST;
Hollis Blanchard7b701592008-12-02 15:51:58 -0600912 kvmppc_account_exit(vcpu, USR_PR_INST);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500913 break;
914 }
915
Scott Woodd30f6e42011-12-20 15:34:43 +0000916 r = emulation_exit(run, vcpu);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500917 break;
918
Christian Ehrhardtde368dc2008-04-29 18:18:23 +0200919 case BOOKE_INTERRUPT_FP_UNAVAIL:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600920 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600921 kvmppc_account_exit(vcpu, FP_UNAVAIL);
Christian Ehrhardtde368dc2008-04-29 18:18:23 +0200922 r = RESUME_GUEST;
923 break;
924
Scott Wood4cd35f62011-06-14 18:34:31 -0500925#ifdef CONFIG_SPE
926 case BOOKE_INTERRUPT_SPE_UNAVAIL: {
927 if (vcpu->arch.shared->msr & MSR_SPE)
928 kvmppc_vcpu_enable_spe(vcpu);
929 else
930 kvmppc_booke_queue_irqprio(vcpu,
931 BOOKE_IRQPRIO_SPE_UNAVAIL);
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600932 r = RESUME_GUEST;
933 break;
Scott Wood4cd35f62011-06-14 18:34:31 -0500934 }
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600935
936 case BOOKE_INTERRUPT_SPE_FP_DATA:
937 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_DATA);
938 r = RESUME_GUEST;
939 break;
940
941 case BOOKE_INTERRUPT_SPE_FP_ROUND:
942 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_ROUND);
943 r = RESUME_GUEST;
944 break;
Scott Wood4cd35f62011-06-14 18:34:31 -0500945#else
946 case BOOKE_INTERRUPT_SPE_UNAVAIL:
947 /*
948 * Guest wants SPE, but host kernel doesn't support it. Send
949 * an "unimplemented operation" program check to the guest.
950 */
951 kvmppc_core_queue_program(vcpu, ESR_PUO | ESR_SPV);
952 r = RESUME_GUEST;
953 break;
954
955 /*
956 * These really should never happen without CONFIG_SPE,
957 * as we should never enable the real MSR[SPE] in the guest.
958 */
959 case BOOKE_INTERRUPT_SPE_FP_DATA:
960 case BOOKE_INTERRUPT_SPE_FP_ROUND:
961 printk(KERN_CRIT "%s: unexpected SPE interrupt %u at %08lx\n",
962 __func__, exit_nr, vcpu->arch.pc);
963 run->hw.hardware_exit_reason = exit_nr;
964 r = RESUME_HOST;
965 break;
966#endif
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600967
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500968 case BOOKE_INTERRUPT_DATA_STORAGE:
Liu Yudaf5e272010-02-02 19:44:35 +0800969 kvmppc_core_queue_data_storage(vcpu, vcpu->arch.fault_dear,
970 vcpu->arch.fault_esr);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600971 kvmppc_account_exit(vcpu, DSI_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500972 r = RESUME_GUEST;
973 break;
974
975 case BOOKE_INTERRUPT_INST_STORAGE:
Liu Yudaf5e272010-02-02 19:44:35 +0800976 kvmppc_core_queue_inst_storage(vcpu, vcpu->arch.fault_esr);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600977 kvmppc_account_exit(vcpu, ISI_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500978 r = RESUME_GUEST;
979 break;
980
Alexander Graf011da892013-01-31 14:17:38 +0100981 case BOOKE_INTERRUPT_ALIGNMENT:
982 kvmppc_core_queue_alignment(vcpu, vcpu->arch.fault_dear,
983 vcpu->arch.fault_esr);
984 r = RESUME_GUEST;
985 break;
986
Scott Woodd30f6e42011-12-20 15:34:43 +0000987#ifdef CONFIG_KVM_BOOKE_HV
988 case BOOKE_INTERRUPT_HV_SYSCALL:
989 if (!(vcpu->arch.shared->msr & MSR_PR)) {
990 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
991 } else {
992 /*
993 * hcall from guest userspace -- send privileged
994 * instruction program check.
995 */
996 kvmppc_core_queue_program(vcpu, ESR_PPR);
997 }
998
999 r = RESUME_GUEST;
1000 break;
1001#else
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001002 case BOOKE_INTERRUPT_SYSCALL:
Alexander Graf2a342ed2010-07-29 14:47:48 +02001003 if (!(vcpu->arch.shared->msr & MSR_PR) &&
1004 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
1005 /* KVM PV hypercalls */
1006 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
1007 r = RESUME_GUEST;
1008 } else {
1009 /* Guest syscalls */
1010 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
1011 }
Hollis Blanchard7b701592008-12-02 15:51:58 -06001012 kvmppc_account_exit(vcpu, SYSCALL_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001013 r = RESUME_GUEST;
1014 break;
Scott Woodd30f6e42011-12-20 15:34:43 +00001015#endif
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001016
1017 case BOOKE_INTERRUPT_DTLB_MISS: {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001018 unsigned long eaddr = vcpu->arch.fault_dear;
Hollis Blanchard7924bd42008-12-02 15:51:55 -06001019 int gtlb_index;
Hollis Blanchard475e7cd2009-01-03 16:23:00 -06001020 gpa_t gpaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001021 gfn_t gfn;
1022
Alexander Grafbf7ca4b2012-02-15 23:40:00 +00001023#ifdef CONFIG_KVM_E500V2
Scott Wooda4cd8b22011-06-14 18:34:41 -05001024 if (!(vcpu->arch.shared->msr & MSR_PR) &&
1025 (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
1026 kvmppc_map_magic(vcpu);
1027 kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
1028 r = RESUME_GUEST;
1029
1030 break;
1031 }
1032#endif
1033
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001034 /* Check the guest TLB. */
Hollis Blanchardfa86b8d2009-01-03 16:23:03 -06001035 gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
Hollis Blanchard7924bd42008-12-02 15:51:55 -06001036 if (gtlb_index < 0) {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001037 /* The guest didn't have a mapping for it. */
Liu Yudaf5e272010-02-02 19:44:35 +08001038 kvmppc_core_queue_dtlb_miss(vcpu,
1039 vcpu->arch.fault_dear,
1040 vcpu->arch.fault_esr);
Hollis Blanchardb52a6382009-01-03 16:23:11 -06001041 kvmppc_mmu_dtlb_miss(vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -06001042 kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001043 r = RESUME_GUEST;
1044 break;
1045 }
1046
Hollis Blanchardbe8d1ca2009-01-03 16:23:02 -06001047 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
Hollis Blanchard475e7cd2009-01-03 16:23:00 -06001048 gfn = gpaddr >> PAGE_SHIFT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001049
1050 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
1051 /* The guest TLB had a mapping, but the shadow TLB
1052 * didn't, and it is RAM. This could be because:
1053 * a) the entry is mapping the host kernel, or
1054 * b) the guest used a large mapping which we're faking
1055 * Either way, we need to satisfy the fault without
1056 * invoking the guest. */
Hollis Blanchard58a96212009-01-03 16:23:01 -06001057 kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
Hollis Blanchard7b701592008-12-02 15:51:58 -06001058 kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001059 r = RESUME_GUEST;
1060 } else {
1061 /* Guest has mapped and accessed a page which is not
1062 * actually RAM. */
Hollis Blanchard475e7cd2009-01-03 16:23:00 -06001063 vcpu->arch.paddr_accessed = gpaddr;
Alexander Graf6020c0f2012-03-12 02:26:30 +01001064 vcpu->arch.vaddr_accessed = eaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001065 r = kvmppc_emulate_mmio(run, vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -06001066 kvmppc_account_exit(vcpu, MMIO_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001067 }
1068
1069 break;
1070 }
1071
1072 case BOOKE_INTERRUPT_ITLB_MISS: {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001073 unsigned long eaddr = vcpu->arch.pc;
Hollis Blanchard89168612008-12-02 15:51:53 -06001074 gpa_t gpaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001075 gfn_t gfn;
Hollis Blanchard7924bd42008-12-02 15:51:55 -06001076 int gtlb_index;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001077
1078 r = RESUME_GUEST;
1079
1080 /* Check the guest TLB. */
Hollis Blanchardfa86b8d2009-01-03 16:23:03 -06001081 gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
Hollis Blanchard7924bd42008-12-02 15:51:55 -06001082 if (gtlb_index < 0) {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001083 /* The guest didn't have a mapping for it. */
Hollis Blanchardd4cf3892008-11-05 09:36:23 -06001084 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
Hollis Blanchardb52a6382009-01-03 16:23:11 -06001085 kvmppc_mmu_itlb_miss(vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -06001086 kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001087 break;
1088 }
1089
Hollis Blanchard7b701592008-12-02 15:51:58 -06001090 kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001091
Hollis Blanchardbe8d1ca2009-01-03 16:23:02 -06001092 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
Hollis Blanchard89168612008-12-02 15:51:53 -06001093 gfn = gpaddr >> PAGE_SHIFT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001094
1095 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
1096 /* The guest TLB had a mapping, but the shadow TLB
1097 * didn't. This could be because:
1098 * a) the entry is mapping the host kernel, or
1099 * b) the guest used a large mapping which we're faking
1100 * Either way, we need to satisfy the fault without
1101 * invoking the guest. */
Hollis Blanchard58a96212009-01-03 16:23:01 -06001102 kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001103 } else {
1104 /* Guest mapped and leaped at non-RAM! */
Hollis Blanchardd4cf3892008-11-05 09:36:23 -06001105 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001106 }
1107
1108 break;
1109 }
1110
Hollis Blanchard6a0ab732008-07-25 13:54:49 -05001111 case BOOKE_INTERRUPT_DEBUG: {
1112 u32 dbsr;
1113
1114 vcpu->arch.pc = mfspr(SPRN_CSRR0);
1115
1116 /* clear IAC events in DBSR register */
1117 dbsr = mfspr(SPRN_DBSR);
1118 dbsr &= DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4;
1119 mtspr(SPRN_DBSR, dbsr);
1120
1121 run->exit_reason = KVM_EXIT_DEBUG;
Hollis Blanchard7b701592008-12-02 15:51:58 -06001122 kvmppc_account_exit(vcpu, DEBUG_EXITS);
Hollis Blanchard6a0ab732008-07-25 13:54:49 -05001123 r = RESUME_HOST;
1124 break;
1125 }
1126
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001127 default:
1128 printk(KERN_EMERG "exit_nr %d\n", exit_nr);
1129 BUG();
1130 }
1131
Alexander Grafa8e4ef82012-02-16 14:07:37 +00001132 /*
1133 * To avoid clobbering exit_reason, only check for signals if we
1134 * aren't already exiting to userspace for some other reason.
1135 */
Alexander Graf03660ba2012-02-28 12:00:41 +01001136 if (!(r & RESUME_HOST)) {
1137 local_irq_disable();
Alexander Graf7ee78852012-08-13 12:44:41 +02001138 s = kvmppc_prepare_to_enter(vcpu);
1139 if (s <= 0) {
Alexander Graf24afa37b2012-08-12 12:42:30 +02001140 local_irq_enable();
Alexander Graf7ee78852012-08-13 12:44:41 +02001141 r = (s << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
Alexander Graf24afa37b2012-08-12 12:42:30 +02001142 } else {
Alexander Grafbd2be682012-08-13 01:04:19 +02001143 kvmppc_lazy_ee_enable();
Alexander Graf03660ba2012-02-28 12:00:41 +01001144 }
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001145 }
1146
1147 return r;
1148}
1149
Bharat Bhushand26f22c2013-02-24 18:57:11 +00001150static void kvmppc_set_tsr(struct kvm_vcpu *vcpu, u32 new_tsr)
1151{
1152 u32 old_tsr = vcpu->arch.tsr;
1153
1154 vcpu->arch.tsr = new_tsr;
1155
1156 if ((old_tsr ^ vcpu->arch.tsr) & (TSR_ENW | TSR_WIS))
1157 arm_next_watchdog(vcpu);
1158
1159 update_timer_ints(vcpu);
1160}
1161
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001162/* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
1163int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1164{
Hollis Blanchard082decf2010-08-07 10:33:56 -07001165 int i;
Alexander Grafaf8f38b2011-08-10 13:57:08 +02001166 int r;
Hollis Blanchard082decf2010-08-07 10:33:56 -07001167
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001168 vcpu->arch.pc = 0;
Scott Woodb5904972011-11-08 18:23:30 -06001169 vcpu->arch.shared->pir = vcpu->vcpu_id;
Alexander Graf8e5b26b2010-01-08 02:58:01 +01001170 kvmppc_set_gpr(vcpu, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */
Scott Woodd30f6e42011-12-20 15:34:43 +00001171 kvmppc_set_msr(vcpu, 0);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001172
Scott Woodd30f6e42011-12-20 15:34:43 +00001173#ifndef CONFIG_KVM_BOOKE_HV
1174 vcpu->arch.shadow_msr = MSR_USER | MSR_DE | MSR_IS | MSR_DS;
Hollis Blanchard49dd2c42008-07-25 13:54:53 -05001175 vcpu->arch.shadow_pid = 1;
Scott Woodd30f6e42011-12-20 15:34:43 +00001176 vcpu->arch.shared->msr = 0;
1177#endif
Hollis Blanchard49dd2c42008-07-25 13:54:53 -05001178
Hollis Blanchard082decf2010-08-07 10:33:56 -07001179 /* Eye-catching numbers so we know if the guest takes an interrupt
1180 * before it's programmed its own IVPR/IVORs. */
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001181 vcpu->arch.ivpr = 0x55550000;
Hollis Blanchard082decf2010-08-07 10:33:56 -07001182 for (i = 0; i < BOOKE_IRQPRIO_MAX; i++)
1183 vcpu->arch.ivor[i] = 0x7700 | i * 4;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001184
Hollis Blanchard73e75b42008-12-02 15:51:57 -06001185 kvmppc_init_timing_stats(vcpu);
1186
Alexander Grafaf8f38b2011-08-10 13:57:08 +02001187 r = kvmppc_core_vcpu_setup(vcpu);
1188 kvmppc_sanity_check(vcpu);
1189 return r;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001190}
1191
Bharat Bhushanf61c94b2012-08-08 20:38:19 +00001192int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
1193{
1194 /* setup watchdog timer once */
1195 spin_lock_init(&vcpu->arch.wdt_lock);
1196 setup_timer(&vcpu->arch.wdt_timer, kvmppc_watchdog_func,
1197 (unsigned long)vcpu);
1198
1199 return 0;
1200}
1201
1202void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
1203{
1204 del_timer_sync(&vcpu->arch.wdt_timer);
1205}
1206
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001207int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1208{
1209 int i;
1210
1211 regs->pc = vcpu->arch.pc;
Alexander Graf992b5b22010-01-08 02:58:02 +01001212 regs->cr = kvmppc_get_cr(vcpu);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001213 regs->ctr = vcpu->arch.ctr;
1214 regs->lr = vcpu->arch.lr;
Alexander Graf992b5b22010-01-08 02:58:02 +01001215 regs->xer = kvmppc_get_xer(vcpu);
Alexander Graf666e7252010-07-29 14:47:43 +02001216 regs->msr = vcpu->arch.shared->msr;
Alexander Grafde7906c2010-07-29 14:47:46 +02001217 regs->srr0 = vcpu->arch.shared->srr0;
1218 regs->srr1 = vcpu->arch.shared->srr1;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001219 regs->pid = vcpu->arch.pid;
Alexander Grafa73a9592010-07-29 14:47:47 +02001220 regs->sprg0 = vcpu->arch.shared->sprg0;
1221 regs->sprg1 = vcpu->arch.shared->sprg1;
1222 regs->sprg2 = vcpu->arch.shared->sprg2;
1223 regs->sprg3 = vcpu->arch.shared->sprg3;
Scott Woodb5904972011-11-08 18:23:30 -06001224 regs->sprg4 = vcpu->arch.shared->sprg4;
1225 regs->sprg5 = vcpu->arch.shared->sprg5;
1226 regs->sprg6 = vcpu->arch.shared->sprg6;
1227 regs->sprg7 = vcpu->arch.shared->sprg7;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001228
1229 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
Alexander Graf8e5b26b2010-01-08 02:58:01 +01001230 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001231
1232 return 0;
1233}
1234
1235int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1236{
1237 int i;
1238
1239 vcpu->arch.pc = regs->pc;
Alexander Graf992b5b22010-01-08 02:58:02 +01001240 kvmppc_set_cr(vcpu, regs->cr);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001241 vcpu->arch.ctr = regs->ctr;
1242 vcpu->arch.lr = regs->lr;
Alexander Graf992b5b22010-01-08 02:58:02 +01001243 kvmppc_set_xer(vcpu, regs->xer);
Hollis Blanchardb8fd68a2008-11-05 09:36:20 -06001244 kvmppc_set_msr(vcpu, regs->msr);
Alexander Grafde7906c2010-07-29 14:47:46 +02001245 vcpu->arch.shared->srr0 = regs->srr0;
1246 vcpu->arch.shared->srr1 = regs->srr1;
Scott Wood5ce941e2011-04-27 17:24:21 -05001247 kvmppc_set_pid(vcpu, regs->pid);
Alexander Grafa73a9592010-07-29 14:47:47 +02001248 vcpu->arch.shared->sprg0 = regs->sprg0;
1249 vcpu->arch.shared->sprg1 = regs->sprg1;
1250 vcpu->arch.shared->sprg2 = regs->sprg2;
1251 vcpu->arch.shared->sprg3 = regs->sprg3;
Scott Woodb5904972011-11-08 18:23:30 -06001252 vcpu->arch.shared->sprg4 = regs->sprg4;
1253 vcpu->arch.shared->sprg5 = regs->sprg5;
1254 vcpu->arch.shared->sprg6 = regs->sprg6;
1255 vcpu->arch.shared->sprg7 = regs->sprg7;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001256
Alexander Graf8e5b26b2010-01-08 02:58:01 +01001257 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
1258 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001259
1260 return 0;
1261}
1262
Scott Wood5ce941e2011-04-27 17:24:21 -05001263static void get_sregs_base(struct kvm_vcpu *vcpu,
1264 struct kvm_sregs *sregs)
1265{
1266 u64 tb = get_tb();
1267
1268 sregs->u.e.features |= KVM_SREGS_E_BASE;
1269
1270 sregs->u.e.csrr0 = vcpu->arch.csrr0;
1271 sregs->u.e.csrr1 = vcpu->arch.csrr1;
1272 sregs->u.e.mcsr = vcpu->arch.mcsr;
Scott Woodd30f6e42011-12-20 15:34:43 +00001273 sregs->u.e.esr = get_guest_esr(vcpu);
1274 sregs->u.e.dear = get_guest_dear(vcpu);
Scott Wood5ce941e2011-04-27 17:24:21 -05001275 sregs->u.e.tsr = vcpu->arch.tsr;
1276 sregs->u.e.tcr = vcpu->arch.tcr;
1277 sregs->u.e.dec = kvmppc_get_dec(vcpu, tb);
1278 sregs->u.e.tb = tb;
1279 sregs->u.e.vrsave = vcpu->arch.vrsave;
1280}
1281
1282static int set_sregs_base(struct kvm_vcpu *vcpu,
1283 struct kvm_sregs *sregs)
1284{
1285 if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
1286 return 0;
1287
1288 vcpu->arch.csrr0 = sregs->u.e.csrr0;
1289 vcpu->arch.csrr1 = sregs->u.e.csrr1;
1290 vcpu->arch.mcsr = sregs->u.e.mcsr;
Scott Woodd30f6e42011-12-20 15:34:43 +00001291 set_guest_esr(vcpu, sregs->u.e.esr);
1292 set_guest_dear(vcpu, sregs->u.e.dear);
Scott Wood5ce941e2011-04-27 17:24:21 -05001293 vcpu->arch.vrsave = sregs->u.e.vrsave;
Scott Wooddfd4d472011-11-17 12:39:59 +00001294 kvmppc_set_tcr(vcpu, sregs->u.e.tcr);
Scott Wood5ce941e2011-04-27 17:24:21 -05001295
Scott Wooddfd4d472011-11-17 12:39:59 +00001296 if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC) {
Scott Wood5ce941e2011-04-27 17:24:21 -05001297 vcpu->arch.dec = sregs->u.e.dec;
Scott Wooddfd4d472011-11-17 12:39:59 +00001298 kvmppc_emulate_dec(vcpu);
1299 }
Scott Wood5ce941e2011-04-27 17:24:21 -05001300
Bharat Bhushand26f22c2013-02-24 18:57:11 +00001301 if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR)
1302 kvmppc_set_tsr(vcpu, sregs->u.e.tsr);
Scott Wood5ce941e2011-04-27 17:24:21 -05001303
1304 return 0;
1305}
1306
1307static void get_sregs_arch206(struct kvm_vcpu *vcpu,
1308 struct kvm_sregs *sregs)
1309{
1310 sregs->u.e.features |= KVM_SREGS_E_ARCH206;
1311
Scott Wood841741f2011-09-02 17:39:37 -05001312 sregs->u.e.pir = vcpu->vcpu_id;
Scott Wood5ce941e2011-04-27 17:24:21 -05001313 sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0;
1314 sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1;
1315 sregs->u.e.decar = vcpu->arch.decar;
1316 sregs->u.e.ivpr = vcpu->arch.ivpr;
1317}
1318
1319static int set_sregs_arch206(struct kvm_vcpu *vcpu,
1320 struct kvm_sregs *sregs)
1321{
1322 if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206))
1323 return 0;
1324
Scott Wood841741f2011-09-02 17:39:37 -05001325 if (sregs->u.e.pir != vcpu->vcpu_id)
Scott Wood5ce941e2011-04-27 17:24:21 -05001326 return -EINVAL;
1327
1328 vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0;
1329 vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1;
1330 vcpu->arch.decar = sregs->u.e.decar;
1331 vcpu->arch.ivpr = sregs->u.e.ivpr;
1332
1333 return 0;
1334}
1335
1336void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
1337{
1338 sregs->u.e.features |= KVM_SREGS_E_IVOR;
1339
1340 sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
1341 sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
1342 sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
1343 sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
1344 sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
1345 sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
1346 sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
1347 sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
1348 sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
1349 sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
1350 sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
1351 sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
1352 sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
1353 sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
1354 sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
1355 sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
1356}
1357
1358int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
1359{
1360 if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
1361 return 0;
1362
1363 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0];
1364 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1];
1365 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2];
1366 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3];
1367 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4];
1368 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5];
1369 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6];
1370 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7];
1371 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8];
1372 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9];
1373 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10];
1374 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11];
1375 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12];
1376 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13];
1377 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14];
1378 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15];
1379
1380 return 0;
1381}
1382
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001383int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1384 struct kvm_sregs *sregs)
1385{
Scott Wood5ce941e2011-04-27 17:24:21 -05001386 sregs->pvr = vcpu->arch.pvr;
1387
1388 get_sregs_base(vcpu, sregs);
1389 get_sregs_arch206(vcpu, sregs);
1390 kvmppc_core_get_sregs(vcpu, sregs);
1391 return 0;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001392}
1393
1394int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1395 struct kvm_sregs *sregs)
1396{
Scott Wood5ce941e2011-04-27 17:24:21 -05001397 int ret;
1398
1399 if (vcpu->arch.pvr != sregs->pvr)
1400 return -EINVAL;
1401
1402 ret = set_sregs_base(vcpu, sregs);
1403 if (ret < 0)
1404 return ret;
1405
1406 ret = set_sregs_arch206(vcpu, sregs);
1407 if (ret < 0)
1408 return ret;
1409
1410 return kvmppc_core_set_sregs(vcpu, sregs);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001411}
1412
Paul Mackerras31f34382011-12-12 12:26:50 +00001413int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1414{
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001415 int r = -EINVAL;
1416
1417 switch (reg->id) {
1418 case KVM_REG_PPC_IAC1:
1419 case KVM_REG_PPC_IAC2:
1420 case KVM_REG_PPC_IAC3:
1421 case KVM_REG_PPC_IAC4: {
1422 int iac = reg->id - KVM_REG_PPC_IAC1;
1423 r = copy_to_user((u64 __user *)(long)reg->addr,
1424 &vcpu->arch.dbg_reg.iac[iac], sizeof(u64));
1425 break;
1426 }
1427 case KVM_REG_PPC_DAC1:
1428 case KVM_REG_PPC_DAC2: {
1429 int dac = reg->id - KVM_REG_PPC_DAC1;
1430 r = copy_to_user((u64 __user *)(long)reg->addr,
1431 &vcpu->arch.dbg_reg.dac[dac], sizeof(u64));
1432 break;
1433 }
Alexander Graf324b3e62013-01-04 18:28:51 +01001434 case KVM_REG_PPC_EPR: {
1435 u32 epr = get_guest_epr(vcpu);
1436 r = put_user(epr, (u32 __user *)(long)reg->addr);
1437 break;
1438 }
Mihai Caraman352df1d2012-10-11 06:13:29 +00001439#if defined(CONFIG_64BIT)
1440 case KVM_REG_PPC_EPCR:
1441 r = put_user(vcpu->arch.epcr, (u32 __user *)(long)reg->addr);
1442 break;
1443#endif
Bharat Bhushan78accda2013-02-24 18:57:12 +00001444 case KVM_REG_PPC_TCR:
1445 r = put_user(vcpu->arch.tcr, (u32 __user *)(long)reg->addr);
1446 break;
1447 case KVM_REG_PPC_TSR:
1448 r = put_user(vcpu->arch.tsr, (u32 __user *)(long)reg->addr);
1449 break;
Bharat Bhushan8c32a2e2013-03-20 20:24:58 +00001450 case KVM_REG_PPC_DEBUG_INST: {
1451 u32 opcode = KVMPPC_INST_EHPRIV;
1452 r = copy_to_user((u32 __user *)(long)reg->addr,
1453 &opcode, sizeof(u32));
1454 break;
1455 }
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001456 default:
1457 break;
1458 }
1459 return r;
Paul Mackerras31f34382011-12-12 12:26:50 +00001460}
1461
1462int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1463{
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001464 int r = -EINVAL;
1465
1466 switch (reg->id) {
1467 case KVM_REG_PPC_IAC1:
1468 case KVM_REG_PPC_IAC2:
1469 case KVM_REG_PPC_IAC3:
1470 case KVM_REG_PPC_IAC4: {
1471 int iac = reg->id - KVM_REG_PPC_IAC1;
1472 r = copy_from_user(&vcpu->arch.dbg_reg.iac[iac],
1473 (u64 __user *)(long)reg->addr, sizeof(u64));
1474 break;
1475 }
1476 case KVM_REG_PPC_DAC1:
1477 case KVM_REG_PPC_DAC2: {
1478 int dac = reg->id - KVM_REG_PPC_DAC1;
1479 r = copy_from_user(&vcpu->arch.dbg_reg.dac[dac],
1480 (u64 __user *)(long)reg->addr, sizeof(u64));
1481 break;
1482 }
Alexander Graf324b3e62013-01-04 18:28:51 +01001483 case KVM_REG_PPC_EPR: {
1484 u32 new_epr;
1485 r = get_user(new_epr, (u32 __user *)(long)reg->addr);
1486 if (!r)
1487 kvmppc_set_epr(vcpu, new_epr);
1488 break;
1489 }
Mihai Caraman352df1d2012-10-11 06:13:29 +00001490#if defined(CONFIG_64BIT)
1491 case KVM_REG_PPC_EPCR: {
1492 u32 new_epcr;
1493 r = get_user(new_epcr, (u32 __user *)(long)reg->addr);
1494 if (r == 0)
1495 kvmppc_set_epcr(vcpu, new_epcr);
1496 break;
1497 }
1498#endif
Bharat Bhushan78accda2013-02-24 18:57:12 +00001499 case KVM_REG_PPC_OR_TSR: {
1500 u32 tsr_bits;
1501 r = get_user(tsr_bits, (u32 __user *)(long)reg->addr);
1502 kvmppc_set_tsr_bits(vcpu, tsr_bits);
1503 break;
1504 }
1505 case KVM_REG_PPC_CLEAR_TSR: {
1506 u32 tsr_bits;
1507 r = get_user(tsr_bits, (u32 __user *)(long)reg->addr);
1508 kvmppc_clr_tsr_bits(vcpu, tsr_bits);
1509 break;
1510 }
1511 case KVM_REG_PPC_TSR: {
1512 u32 tsr;
1513 r = get_user(tsr, (u32 __user *)(long)reg->addr);
1514 kvmppc_set_tsr(vcpu, tsr);
1515 break;
1516 }
1517 case KVM_REG_PPC_TCR: {
1518 u32 tcr;
1519 r = get_user(tcr, (u32 __user *)(long)reg->addr);
1520 kvmppc_set_tcr(vcpu, tcr);
1521 break;
1522 }
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001523 default:
1524 break;
1525 }
1526 return r;
Paul Mackerras31f34382011-12-12 12:26:50 +00001527}
1528
Bharat Bhushan092d62e2013-04-08 00:32:12 +00001529int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1530 struct kvm_guest_debug *dbg)
1531{
1532 return -EINVAL;
1533}
1534
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001535int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1536{
1537 return -ENOTSUPP;
1538}
1539
1540int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1541{
1542 return -ENOTSUPP;
1543}
1544
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001545int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1546 struct kvm_translation *tr)
1547{
Avi Kivity98001d82010-05-13 11:05:49 +03001548 int r;
1549
Avi Kivity98001d82010-05-13 11:05:49 +03001550 r = kvmppc_core_vcpu_translate(vcpu, tr);
Avi Kivity98001d82010-05-13 11:05:49 +03001551 return r;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001552}
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001553
Alexander Graf4e755752009-10-30 05:47:01 +00001554int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
1555{
1556 return -ENOTSUPP;
1557}
1558
Paul Mackerrasa66b48c2012-09-11 13:27:46 +00001559void kvmppc_core_free_memslot(struct kvm_memory_slot *free,
1560 struct kvm_memory_slot *dont)
1561{
1562}
1563
1564int kvmppc_core_create_memslot(struct kvm_memory_slot *slot,
1565 unsigned long npages)
1566{
1567 return 0;
1568}
1569
Paul Mackerrasf9e05542011-06-29 00:19:22 +00001570int kvmppc_core_prepare_memory_region(struct kvm *kvm,
Paul Mackerrasa66b48c2012-09-11 13:27:46 +00001571 struct kvm_memory_slot *memslot,
Paul Mackerrasf9e05542011-06-29 00:19:22 +00001572 struct kvm_userspace_memory_region *mem)
1573{
1574 return 0;
1575}
1576
1577void kvmppc_core_commit_memory_region(struct kvm *kvm,
Paul Mackerrasdfe49db2012-09-11 13:28:18 +00001578 struct kvm_userspace_memory_region *mem,
Takuya Yoshikawa84826442013-02-27 19:45:25 +09001579 const struct kvm_memory_slot *old)
Paul Mackerrasdfe49db2012-09-11 13:28:18 +00001580{
1581}
1582
1583void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
Paul Mackerrasf9e05542011-06-29 00:19:22 +00001584{
1585}
1586
Mihai Caraman38f98822012-10-11 06:13:27 +00001587void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr)
1588{
1589#if defined(CONFIG_64BIT)
1590 vcpu->arch.epcr = new_epcr;
1591#ifdef CONFIG_KVM_BOOKE_HV
1592 vcpu->arch.shadow_epcr &= ~SPRN_EPCR_GICM;
1593 if (vcpu->arch.epcr & SPRN_EPCR_ICM)
1594 vcpu->arch.shadow_epcr |= SPRN_EPCR_GICM;
1595#endif
1596#endif
1597}
1598
Scott Wooddfd4d472011-11-17 12:39:59 +00001599void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr)
1600{
1601 vcpu->arch.tcr = new_tcr;
Bharat Bhushanf61c94b2012-08-08 20:38:19 +00001602 arm_next_watchdog(vcpu);
Scott Wooddfd4d472011-11-17 12:39:59 +00001603 update_timer_ints(vcpu);
1604}
1605
1606void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
1607{
1608 set_bits(tsr_bits, &vcpu->arch.tsr);
1609 smp_wmb();
1610 kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
1611 kvm_vcpu_kick(vcpu);
1612}
1613
1614void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
1615{
1616 clear_bits(tsr_bits, &vcpu->arch.tsr);
Bharat Bhushanf61c94b2012-08-08 20:38:19 +00001617
1618 /*
1619 * We may have stopped the watchdog due to
1620 * being stuck on final expiration.
1621 */
1622 if (tsr_bits & (TSR_ENW | TSR_WIS))
1623 arm_next_watchdog(vcpu);
1624
Scott Wooddfd4d472011-11-17 12:39:59 +00001625 update_timer_ints(vcpu);
1626}
1627
1628void kvmppc_decrementer_func(unsigned long data)
1629{
1630 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
1631
Bharat Bhushan21bd0002012-05-20 23:21:23 +00001632 if (vcpu->arch.tcr & TCR_ARE) {
1633 vcpu->arch.dec = vcpu->arch.decar;
1634 kvmppc_emulate_dec(vcpu);
1635 }
1636
Scott Wooddfd4d472011-11-17 12:39:59 +00001637 kvmppc_set_tsr_bits(vcpu, TSR_DIS);
1638}
1639
Scott Wood94fa9d92011-12-20 15:34:22 +00001640void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1641{
Paul Mackerrasa47d72f2012-09-20 19:35:51 +00001642 vcpu->cpu = smp_processor_id();
Scott Woodd30f6e42011-12-20 15:34:43 +00001643 current->thread.kvm_vcpu = vcpu;
Scott Wood94fa9d92011-12-20 15:34:22 +00001644}
1645
1646void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu)
1647{
Scott Woodd30f6e42011-12-20 15:34:43 +00001648 current->thread.kvm_vcpu = NULL;
Paul Mackerrasa47d72f2012-09-20 19:35:51 +00001649 vcpu->cpu = -1;
Scott Wood94fa9d92011-12-20 15:34:22 +00001650}
1651
Stephen Rothwell2986b8c2009-06-02 11:46:14 +10001652int __init kvmppc_booke_init(void)
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001653{
Scott Woodd30f6e42011-12-20 15:34:43 +00001654#ifndef CONFIG_KVM_BOOKE_HV
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001655 unsigned long ivor[16];
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001656 unsigned long *handler = kvmppc_booke_handler_addr;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001657 unsigned long max_ivor = 0;
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001658 unsigned long handler_len;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001659 int i;
1660
1661 /* We install our own exception handlers by hijacking IVPR. IVPR must
1662 * be 16-bit aligned, so we need a 64KB allocation. */
1663 kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
1664 VCPU_SIZE_ORDER);
1665 if (!kvmppc_booke_handlers)
1666 return -ENOMEM;
1667
1668 /* XXX make sure our handlers are smaller than Linux's */
1669
1670 /* Copy our interrupt handlers to match host IVORs. That way we don't
1671 * have to swap the IVORs on every guest/host transition. */
1672 ivor[0] = mfspr(SPRN_IVOR0);
1673 ivor[1] = mfspr(SPRN_IVOR1);
1674 ivor[2] = mfspr(SPRN_IVOR2);
1675 ivor[3] = mfspr(SPRN_IVOR3);
1676 ivor[4] = mfspr(SPRN_IVOR4);
1677 ivor[5] = mfspr(SPRN_IVOR5);
1678 ivor[6] = mfspr(SPRN_IVOR6);
1679 ivor[7] = mfspr(SPRN_IVOR7);
1680 ivor[8] = mfspr(SPRN_IVOR8);
1681 ivor[9] = mfspr(SPRN_IVOR9);
1682 ivor[10] = mfspr(SPRN_IVOR10);
1683 ivor[11] = mfspr(SPRN_IVOR11);
1684 ivor[12] = mfspr(SPRN_IVOR12);
1685 ivor[13] = mfspr(SPRN_IVOR13);
1686 ivor[14] = mfspr(SPRN_IVOR14);
1687 ivor[15] = mfspr(SPRN_IVOR15);
1688
1689 for (i = 0; i < 16; i++) {
1690 if (ivor[i] > max_ivor)
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001691 max_ivor = i;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001692
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001693 handler_len = handler[i + 1] - handler[i];
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001694 memcpy((void *)kvmppc_booke_handlers + ivor[i],
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001695 (void *)handler[i], handler_len);
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001696 }
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001697
1698 handler_len = handler[max_ivor + 1] - handler[max_ivor];
1699 flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers +
1700 ivor[max_ivor] + handler_len);
Scott Woodd30f6e42011-12-20 15:34:43 +00001701#endif /* !BOOKE_HV */
Hollis Blancharddb93f572008-11-05 09:36:18 -06001702 return 0;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001703}
1704
Hollis Blancharddb93f572008-11-05 09:36:18 -06001705void __exit kvmppc_booke_exit(void)
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001706{
1707 free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
1708 kvm_exit();
1709}