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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
Scott Wood5df554ad2013-04-12 14:08:46 +0000349 if ((priority == BOOKE_IRQPRIO_EXTERNAL) && vcpu->arch.epr_flags)
Alexander Graf1c810632013-01-04 18:12:48 +0100350 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);
Scott Wood5df554ad2013-04-12 14:08:46 +0000430 if (update_epr == true) {
431 if (vcpu->arch.epr_flags & KVMPPC_EPR_USER)
432 kvm_make_request(KVM_REQ_EPR_EXIT, vcpu);
433 }
Mihai Caraman95e90b42012-10-11 06:13:26 +0000434
435 new_msr &= msr_mask;
436#if defined(CONFIG_64BIT)
437 if (vcpu->arch.epcr & SPRN_EPCR_ICM)
438 new_msr |= MSR_CM;
439#endif
440 kvmppc_set_msr(vcpu, new_msr);
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600441
Alexander Grafc5335f12010-08-30 14:03:24 +0200442 if (!keep_irq)
443 clear_bit(priority, &vcpu->arch.pending_exceptions);
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600444 }
445
Scott Woodd30f6e42011-12-20 15:34:43 +0000446#ifdef CONFIG_KVM_BOOKE_HV
447 /*
448 * If an interrupt is pending but masked, raise a guest doorbell
449 * so that we are notified when the guest enables the relevant
450 * MSR bit.
451 */
452 if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_EE)
453 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_NONCRIT);
454 if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_CE)
455 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_CRIT);
456 if (vcpu->arch.pending_exceptions & BOOKE_IRQPRIO_MACHINE_CHECK)
457 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_MC);
458#endif
459
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600460 return allowed;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500461}
462
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000463/*
464 * Return the number of jiffies until the next timeout. If the timeout is
465 * longer than the NEXT_TIMER_MAX_DELTA, then return NEXT_TIMER_MAX_DELTA
466 * because the larger value can break the timer APIs.
467 */
468static unsigned long watchdog_next_timeout(struct kvm_vcpu *vcpu)
469{
470 u64 tb, wdt_tb, wdt_ticks = 0;
471 u64 nr_jiffies = 0;
472 u32 period = TCR_GET_WP(vcpu->arch.tcr);
473
474 wdt_tb = 1ULL << (63 - period);
475 tb = get_tb();
476 /*
477 * The watchdog timeout will hapeen when TB bit corresponding
478 * to watchdog will toggle from 0 to 1.
479 */
480 if (tb & wdt_tb)
481 wdt_ticks = wdt_tb;
482
483 wdt_ticks += wdt_tb - (tb & (wdt_tb - 1));
484
485 /* Convert timebase ticks to jiffies */
486 nr_jiffies = wdt_ticks;
487
488 if (do_div(nr_jiffies, tb_ticks_per_jiffy))
489 nr_jiffies++;
490
491 return min_t(unsigned long long, nr_jiffies, NEXT_TIMER_MAX_DELTA);
492}
493
494static void arm_next_watchdog(struct kvm_vcpu *vcpu)
495{
496 unsigned long nr_jiffies;
497 unsigned long flags;
498
499 /*
500 * If TSR_ENW and TSR_WIS are not set then no need to exit to
501 * userspace, so clear the KVM_REQ_WATCHDOG request.
502 */
503 if ((vcpu->arch.tsr & (TSR_ENW | TSR_WIS)) != (TSR_ENW | TSR_WIS))
504 clear_bit(KVM_REQ_WATCHDOG, &vcpu->requests);
505
506 spin_lock_irqsave(&vcpu->arch.wdt_lock, flags);
507 nr_jiffies = watchdog_next_timeout(vcpu);
508 /*
509 * If the number of jiffies of watchdog timer >= NEXT_TIMER_MAX_DELTA
510 * then do not run the watchdog timer as this can break timer APIs.
511 */
512 if (nr_jiffies < NEXT_TIMER_MAX_DELTA)
513 mod_timer(&vcpu->arch.wdt_timer, jiffies + nr_jiffies);
514 else
515 del_timer(&vcpu->arch.wdt_timer);
516 spin_unlock_irqrestore(&vcpu->arch.wdt_lock, flags);
517}
518
519void kvmppc_watchdog_func(unsigned long data)
520{
521 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
522 u32 tsr, new_tsr;
523 int final;
524
525 do {
526 new_tsr = tsr = vcpu->arch.tsr;
527 final = 0;
528
529 /* Time out event */
530 if (tsr & TSR_ENW) {
531 if (tsr & TSR_WIS)
532 final = 1;
533 else
534 new_tsr = tsr | TSR_WIS;
535 } else {
536 new_tsr = tsr | TSR_ENW;
537 }
538 } while (cmpxchg(&vcpu->arch.tsr, tsr, new_tsr) != tsr);
539
540 if (new_tsr & TSR_WIS) {
541 smp_wmb();
542 kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
543 kvm_vcpu_kick(vcpu);
544 }
545
546 /*
547 * If this is final watchdog expiry and some action is required
548 * then exit to userspace.
549 */
550 if (final && (vcpu->arch.tcr & TCR_WRC_MASK) &&
551 vcpu->arch.watchdog_enabled) {
552 smp_wmb();
553 kvm_make_request(KVM_REQ_WATCHDOG, vcpu);
554 kvm_vcpu_kick(vcpu);
555 }
556
557 /*
558 * Stop running the watchdog timer after final expiration to
559 * prevent the host from being flooded with timers if the
560 * guest sets a short period.
561 * Timers will resume when TSR/TCR is updated next time.
562 */
563 if (!final)
564 arm_next_watchdog(vcpu);
565}
566
Scott Wooddfd4d472011-11-17 12:39:59 +0000567static void update_timer_ints(struct kvm_vcpu *vcpu)
568{
569 if ((vcpu->arch.tcr & TCR_DIE) && (vcpu->arch.tsr & TSR_DIS))
570 kvmppc_core_queue_dec(vcpu);
571 else
572 kvmppc_core_dequeue_dec(vcpu);
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000573
574 if ((vcpu->arch.tcr & TCR_WIE) && (vcpu->arch.tsr & TSR_WIS))
575 kvmppc_core_queue_watchdog(vcpu);
576 else
577 kvmppc_core_dequeue_watchdog(vcpu);
Scott Wooddfd4d472011-11-17 12:39:59 +0000578}
579
Scott Woodc59a6a32011-11-08 18:23:25 -0600580static void kvmppc_core_check_exceptions(struct kvm_vcpu *vcpu)
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500581{
582 unsigned long *pending = &vcpu->arch.pending_exceptions;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500583 unsigned int priority;
584
Hollis Blanchard9ab80842008-11-05 09:36:22 -0600585 priority = __ffs(*pending);
Alexander Graf8b3a00f2012-02-16 14:12:46 +0000586 while (priority < BOOKE_IRQPRIO_MAX) {
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600587 if (kvmppc_booke_irqprio_deliver(vcpu, priority))
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500588 break;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500589
590 priority = find_next_bit(pending,
591 BITS_PER_BYTE * sizeof(*pending),
592 priority + 1);
593 }
Alexander Graf90bba352010-07-29 14:47:51 +0200594
595 /* Tell the guest about our interrupt status */
Scott Wood29ac26e2011-11-08 18:23:27 -0600596 vcpu->arch.shared->int_pending = !!*pending;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500597}
598
Scott Woodc59a6a32011-11-08 18:23:25 -0600599/* Check pending exceptions and deliver one, if possible. */
Alexander Grafa8e4ef82012-02-16 14:07:37 +0000600int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
Scott Woodc59a6a32011-11-08 18:23:25 -0600601{
Alexander Grafa8e4ef82012-02-16 14:07:37 +0000602 int r = 0;
Scott Woodc59a6a32011-11-08 18:23:25 -0600603 WARN_ON_ONCE(!irqs_disabled());
604
605 kvmppc_core_check_exceptions(vcpu);
606
Alexander Grafb8c649a2012-12-20 04:52:39 +0000607 if (vcpu->requests) {
608 /* Exception delivery raised request; start over */
609 return 1;
610 }
611
Scott Woodc59a6a32011-11-08 18:23:25 -0600612 if (vcpu->arch.shared->msr & MSR_WE) {
613 local_irq_enable();
614 kvm_vcpu_block(vcpu);
Alexander Graf966cd0f2012-03-14 16:55:08 +0100615 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
Scott Woodc59a6a32011-11-08 18:23:25 -0600616 local_irq_disable();
617
618 kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
Alexander Grafa8e4ef82012-02-16 14:07:37 +0000619 r = 1;
Scott Woodc59a6a32011-11-08 18:23:25 -0600620 };
Alexander Grafa8e4ef82012-02-16 14:07:37 +0000621
622 return r;
623}
624
Alexander Graf7c973a22012-08-13 12:50:35 +0200625int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
Alexander Graf4ffc6352012-08-08 20:31:13 +0200626{
Alexander Graf7c973a22012-08-13 12:50:35 +0200627 int r = 1; /* Indicate we want to get back into the guest */
628
Alexander Graf2d8185d2012-08-10 12:31:12 +0200629 if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu))
630 update_timer_ints(vcpu);
Alexander Graf862d31f2012-07-31 00:19:50 +0200631#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
Alexander Graf2d8185d2012-08-10 12:31:12 +0200632 if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
633 kvmppc_core_flush_tlb(vcpu);
Alexander Graf862d31f2012-07-31 00:19:50 +0200634#endif
Alexander Graf7c973a22012-08-13 12:50:35 +0200635
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000636 if (kvm_check_request(KVM_REQ_WATCHDOG, vcpu)) {
637 vcpu->run->exit_reason = KVM_EXIT_WATCHDOG;
638 r = 0;
639 }
640
Alexander Graf1c810632013-01-04 18:12:48 +0100641 if (kvm_check_request(KVM_REQ_EPR_EXIT, vcpu)) {
642 vcpu->run->epr.epr = 0;
643 vcpu->arch.epr_needed = true;
644 vcpu->run->exit_reason = KVM_EXIT_EPR;
645 r = 0;
646 }
647
Alexander Graf7c973a22012-08-13 12:50:35 +0200648 return r;
Alexander Graf4ffc6352012-08-08 20:31:13 +0200649}
650
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000651int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
652{
Alexander Graf7ee78852012-08-13 12:44:41 +0200653 int ret, s;
Scott Wood8fae8452011-12-20 15:34:45 +0000654#ifdef CONFIG_PPC_FPU
655 unsigned int fpscr;
656 int fpexc_mode;
657 u64 fpr[32];
658#endif
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000659
Alexander Grafaf8f38b2011-08-10 13:57:08 +0200660 if (!vcpu->arch.sane) {
661 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
662 return -EINVAL;
663 }
664
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000665 local_irq_disable();
Alexander Graf7ee78852012-08-13 12:44:41 +0200666 s = kvmppc_prepare_to_enter(vcpu);
667 if (s <= 0) {
Alexander Graf24afa372012-08-12 12:42:30 +0200668 local_irq_enable();
Alexander Graf7ee78852012-08-13 12:44:41 +0200669 ret = s;
Scott Wood1d1ef222011-11-08 16:11:59 -0600670 goto out;
671 }
Alexander Grafbd2be682012-08-13 01:04:19 +0200672 kvmppc_lazy_ee_enable();
Scott Wood1d1ef222011-11-08 16:11:59 -0600673
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000674 kvm_guest_enter();
Scott Wood8fae8452011-12-20 15:34:45 +0000675
676#ifdef CONFIG_PPC_FPU
677 /* Save userspace FPU state in stack */
678 enable_kernel_fp();
679 memcpy(fpr, current->thread.fpr, sizeof(current->thread.fpr));
680 fpscr = current->thread.fpscr.val;
681 fpexc_mode = current->thread.fpexc_mode;
682
683 /* Restore guest FPU state to thread */
684 memcpy(current->thread.fpr, vcpu->arch.fpr, sizeof(vcpu->arch.fpr));
685 current->thread.fpscr.val = vcpu->arch.fpscr;
686
687 /*
688 * Since we can't trap on MSR_FP in GS-mode, we consider the guest
689 * as always using the FPU. Kernel usage of FP (via
690 * enable_kernel_fp()) in this thread must not occur while
691 * vcpu->fpu_active is set.
692 */
693 vcpu->fpu_active = 1;
694
695 kvmppc_load_guest_fp(vcpu);
696#endif
697
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000698 ret = __kvmppc_vcpu_run(kvm_run, vcpu);
Scott Wood8fae8452011-12-20 15:34:45 +0000699
Alexander Graf24afa372012-08-12 12:42:30 +0200700 /* No need for kvm_guest_exit. It's done in handle_exit.
701 We also get here with interrupts enabled. */
702
Scott Wood8fae8452011-12-20 15:34:45 +0000703#ifdef CONFIG_PPC_FPU
704 kvmppc_save_guest_fp(vcpu);
705
706 vcpu->fpu_active = 0;
707
708 /* Save guest FPU state from thread */
709 memcpy(vcpu->arch.fpr, current->thread.fpr, sizeof(vcpu->arch.fpr));
710 vcpu->arch.fpscr = current->thread.fpscr.val;
711
712 /* Restore userspace FPU state from stack */
713 memcpy(current->thread.fpr, fpr, sizeof(current->thread.fpr));
714 current->thread.fpscr.val = fpscr;
715 current->thread.fpexc_mode = fpexc_mode;
716#endif
717
Scott Wood1d1ef222011-11-08 16:11:59 -0600718out:
Alexander Grafd69c6432012-08-08 20:44:20 +0200719 vcpu->mode = OUTSIDE_GUEST_MODE;
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000720 return ret;
721}
722
Scott Woodd30f6e42011-12-20 15:34:43 +0000723static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
724{
725 enum emulation_result er;
726
727 er = kvmppc_emulate_instruction(run, vcpu);
728 switch (er) {
729 case EMULATE_DONE:
730 /* don't overwrite subtypes, just account kvm_stats */
731 kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
732 /* Future optimization: only reload non-volatiles if
733 * they were actually modified by emulation. */
734 return RESUME_GUEST_NV;
735
736 case EMULATE_DO_DCR:
737 run->exit_reason = KVM_EXIT_DCR;
738 return RESUME_HOST;
739
740 case EMULATE_FAIL:
Scott Woodd30f6e42011-12-20 15:34:43 +0000741 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
742 __func__, vcpu->arch.pc, vcpu->arch.last_inst);
743 /* For debugging, encode the failing instruction and
744 * report it to userspace. */
745 run->hw.hardware_exit_reason = ~0ULL << 32;
746 run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
Alexander Grafd1ff5492012-02-16 13:24:03 +0000747 kvmppc_core_queue_program(vcpu, ESR_PIL);
Scott Woodd30f6e42011-12-20 15:34:43 +0000748 return RESUME_HOST;
749
Bharat Bhushan9b4f5302013-04-08 00:32:15 +0000750 case EMULATE_EXIT_USER:
751 return RESUME_HOST;
752
Scott Woodd30f6e42011-12-20 15:34:43 +0000753 default:
754 BUG();
755 }
756}
757
Alexander Graf4e642cc2012-02-20 23:57:26 +0100758static void kvmppc_fill_pt_regs(struct pt_regs *regs)
759{
760 ulong r1, ip, msr, lr;
761
762 asm("mr %0, 1" : "=r"(r1));
763 asm("mflr %0" : "=r"(lr));
764 asm("mfmsr %0" : "=r"(msr));
765 asm("bl 1f; 1: mflr %0" : "=r"(ip));
766
767 memset(regs, 0, sizeof(*regs));
768 regs->gpr[1] = r1;
769 regs->nip = ip;
770 regs->msr = msr;
771 regs->link = lr;
772}
773
Bharat Bhushan6328e592012-06-20 05:56:53 +0000774/*
775 * For interrupts needed to be handled by host interrupt handlers,
776 * corresponding host handler are called from here in similar way
777 * (but not exact) as they are called from low level handler
778 * (such as from arch/powerpc/kernel/head_fsl_booke.S).
779 */
Alexander Graf4e642cc2012-02-20 23:57:26 +0100780static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu,
781 unsigned int exit_nr)
782{
783 struct pt_regs regs;
784
785 switch (exit_nr) {
786 case BOOKE_INTERRUPT_EXTERNAL:
787 kvmppc_fill_pt_regs(&regs);
788 do_IRQ(&regs);
789 break;
790 case BOOKE_INTERRUPT_DECREMENTER:
791 kvmppc_fill_pt_regs(&regs);
792 timer_interrupt(&regs);
793 break;
794#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_BOOK3E_64)
795 case BOOKE_INTERRUPT_DOORBELL:
796 kvmppc_fill_pt_regs(&regs);
797 doorbell_exception(&regs);
798 break;
799#endif
800 case BOOKE_INTERRUPT_MACHINE_CHECK:
801 /* FIXME */
802 break;
Alexander Graf7cc1e8e2012-02-22 16:26:34 +0100803 case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
804 kvmppc_fill_pt_regs(&regs);
805 performance_monitor_exception(&regs);
806 break;
Bharat Bhushan6328e592012-06-20 05:56:53 +0000807 case BOOKE_INTERRUPT_WATCHDOG:
808 kvmppc_fill_pt_regs(&regs);
809#ifdef CONFIG_BOOKE_WDT
810 WatchdogException(&regs);
811#else
812 unknown_exception(&regs);
813#endif
814 break;
815 case BOOKE_INTERRUPT_CRITICAL:
816 unknown_exception(&regs);
817 break;
Alexander Graf4e642cc2012-02-20 23:57:26 +0100818 }
819}
820
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500821/**
822 * kvmppc_handle_exit
823 *
824 * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
825 */
826int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
827 unsigned int exit_nr)
828{
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500829 int r = RESUME_HOST;
Alexander Graf7ee78852012-08-13 12:44:41 +0200830 int s;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500831
Hollis Blanchard73e75b412008-12-02 15:51:57 -0600832 /* update before a new last_exit_type is rewritten */
833 kvmppc_update_timing_stats(vcpu);
834
Alexander Graf4e642cc2012-02-20 23:57:26 +0100835 /* restart interrupts if they were meant for the host */
836 kvmppc_restart_interrupt(vcpu, exit_nr);
Scott Woodd30f6e42011-12-20 15:34:43 +0000837
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500838 local_irq_enable();
839
Alexander Graf97c95052012-08-02 15:10:00 +0200840 trace_kvm_exit(exit_nr, vcpu);
Alexander Graf706fb732012-08-12 11:29:09 +0200841 kvm_guest_exit();
Alexander Graf97c95052012-08-02 15:10:00 +0200842
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500843 run->exit_reason = KVM_EXIT_UNKNOWN;
844 run->ready_for_interrupt_injection = 1;
845
846 switch (exit_nr) {
847 case BOOKE_INTERRUPT_MACHINE_CHECK:
Alexander Grafc35c9d82012-02-20 12:21:18 +0100848 printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
849 kvmppc_dump_vcpu(vcpu);
850 /* For debugging, send invalid exit reason to user space */
851 run->hw.hardware_exit_reason = ~1ULL << 32;
852 run->hw.hardware_exit_reason |= mfspr(SPRN_MCSR);
853 r = RESUME_HOST;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500854 break;
855
856 case BOOKE_INTERRUPT_EXTERNAL:
Hollis Blanchard7b701592008-12-02 15:51:58 -0600857 kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
Hollis Blanchard1b6766c2008-11-05 09:36:21 -0600858 r = RESUME_GUEST;
859 break;
860
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500861 case BOOKE_INTERRUPT_DECREMENTER:
Hollis Blanchard7b701592008-12-02 15:51:58 -0600862 kvmppc_account_exit(vcpu, DEC_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500863 r = RESUME_GUEST;
864 break;
865
Bharat Bhushan6328e592012-06-20 05:56:53 +0000866 case BOOKE_INTERRUPT_WATCHDOG:
867 r = RESUME_GUEST;
868 break;
869
Scott Woodd30f6e42011-12-20 15:34:43 +0000870 case BOOKE_INTERRUPT_DOORBELL:
871 kvmppc_account_exit(vcpu, DBELL_EXITS);
Scott Woodd30f6e42011-12-20 15:34:43 +0000872 r = RESUME_GUEST;
873 break;
874
875 case BOOKE_INTERRUPT_GUEST_DBELL_CRIT:
876 kvmppc_account_exit(vcpu, GDBELL_EXITS);
877
878 /*
879 * We are here because there is a pending guest interrupt
880 * which could not be delivered as MSR_CE or MSR_ME was not
881 * set. Once we break from here we will retry delivery.
882 */
883 r = RESUME_GUEST;
884 break;
885
886 case BOOKE_INTERRUPT_GUEST_DBELL:
887 kvmppc_account_exit(vcpu, GDBELL_EXITS);
888
889 /*
890 * We are here because there is a pending guest interrupt
891 * which could not be delivered as MSR_EE was not set. Once
892 * we break from here we will retry delivery.
893 */
894 r = RESUME_GUEST;
895 break;
896
Alexander Graf95f2e922012-02-20 22:45:12 +0100897 case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
898 r = RESUME_GUEST;
899 break;
900
Scott Woodd30f6e42011-12-20 15:34:43 +0000901 case BOOKE_INTERRUPT_HV_PRIV:
902 r = emulation_exit(run, vcpu);
903 break;
904
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500905 case BOOKE_INTERRUPT_PROGRAM:
Scott Woodd30f6e42011-12-20 15:34:43 +0000906 if (vcpu->arch.shared->msr & (MSR_PR | MSR_GS)) {
Alexander Graf02685972012-02-20 12:33:22 +0100907 /*
908 * Program traps generated by user-level software must
909 * be handled by the guest kernel.
910 *
911 * In GS mode, hypervisor privileged instructions trap
912 * on BOOKE_INTERRUPT_HV_PRIV, not here, so these are
913 * actual program interrupts, handled by the guest.
914 */
Liu Yudaf5e272010-02-02 19:44:35 +0800915 kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500916 r = RESUME_GUEST;
Hollis Blanchard7b701592008-12-02 15:51:58 -0600917 kvmppc_account_exit(vcpu, USR_PR_INST);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500918 break;
919 }
920
Scott Woodd30f6e42011-12-20 15:34:43 +0000921 r = emulation_exit(run, vcpu);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500922 break;
923
Christian Ehrhardtde368dc2008-04-29 18:18:23 +0200924 case BOOKE_INTERRUPT_FP_UNAVAIL:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600925 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600926 kvmppc_account_exit(vcpu, FP_UNAVAIL);
Christian Ehrhardtde368dc2008-04-29 18:18:23 +0200927 r = RESUME_GUEST;
928 break;
929
Scott Wood4cd35f62011-06-14 18:34:31 -0500930#ifdef CONFIG_SPE
931 case BOOKE_INTERRUPT_SPE_UNAVAIL: {
932 if (vcpu->arch.shared->msr & MSR_SPE)
933 kvmppc_vcpu_enable_spe(vcpu);
934 else
935 kvmppc_booke_queue_irqprio(vcpu,
936 BOOKE_IRQPRIO_SPE_UNAVAIL);
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600937 r = RESUME_GUEST;
938 break;
Scott Wood4cd35f62011-06-14 18:34:31 -0500939 }
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600940
941 case BOOKE_INTERRUPT_SPE_FP_DATA:
942 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_DATA);
943 r = RESUME_GUEST;
944 break;
945
946 case BOOKE_INTERRUPT_SPE_FP_ROUND:
947 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_ROUND);
948 r = RESUME_GUEST;
949 break;
Scott Wood4cd35f62011-06-14 18:34:31 -0500950#else
951 case BOOKE_INTERRUPT_SPE_UNAVAIL:
952 /*
953 * Guest wants SPE, but host kernel doesn't support it. Send
954 * an "unimplemented operation" program check to the guest.
955 */
956 kvmppc_core_queue_program(vcpu, ESR_PUO | ESR_SPV);
957 r = RESUME_GUEST;
958 break;
959
960 /*
961 * These really should never happen without CONFIG_SPE,
962 * as we should never enable the real MSR[SPE] in the guest.
963 */
964 case BOOKE_INTERRUPT_SPE_FP_DATA:
965 case BOOKE_INTERRUPT_SPE_FP_ROUND:
966 printk(KERN_CRIT "%s: unexpected SPE interrupt %u at %08lx\n",
967 __func__, exit_nr, vcpu->arch.pc);
968 run->hw.hardware_exit_reason = exit_nr;
969 r = RESUME_HOST;
970 break;
971#endif
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600972
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500973 case BOOKE_INTERRUPT_DATA_STORAGE:
Liu Yudaf5e272010-02-02 19:44:35 +0800974 kvmppc_core_queue_data_storage(vcpu, vcpu->arch.fault_dear,
975 vcpu->arch.fault_esr);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600976 kvmppc_account_exit(vcpu, DSI_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500977 r = RESUME_GUEST;
978 break;
979
980 case BOOKE_INTERRUPT_INST_STORAGE:
Liu Yudaf5e272010-02-02 19:44:35 +0800981 kvmppc_core_queue_inst_storage(vcpu, vcpu->arch.fault_esr);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600982 kvmppc_account_exit(vcpu, ISI_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500983 r = RESUME_GUEST;
984 break;
985
Alexander Graf011da892013-01-31 14:17:38 +0100986 case BOOKE_INTERRUPT_ALIGNMENT:
987 kvmppc_core_queue_alignment(vcpu, vcpu->arch.fault_dear,
988 vcpu->arch.fault_esr);
989 r = RESUME_GUEST;
990 break;
991
Scott Woodd30f6e42011-12-20 15:34:43 +0000992#ifdef CONFIG_KVM_BOOKE_HV
993 case BOOKE_INTERRUPT_HV_SYSCALL:
994 if (!(vcpu->arch.shared->msr & MSR_PR)) {
995 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
996 } else {
997 /*
998 * hcall from guest userspace -- send privileged
999 * instruction program check.
1000 */
1001 kvmppc_core_queue_program(vcpu, ESR_PPR);
1002 }
1003
1004 r = RESUME_GUEST;
1005 break;
1006#else
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001007 case BOOKE_INTERRUPT_SYSCALL:
Alexander Graf2a342ed2010-07-29 14:47:48 +02001008 if (!(vcpu->arch.shared->msr & MSR_PR) &&
1009 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
1010 /* KVM PV hypercalls */
1011 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
1012 r = RESUME_GUEST;
1013 } else {
1014 /* Guest syscalls */
1015 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
1016 }
Hollis Blanchard7b701592008-12-02 15:51:58 -06001017 kvmppc_account_exit(vcpu, SYSCALL_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001018 r = RESUME_GUEST;
1019 break;
Scott Woodd30f6e42011-12-20 15:34:43 +00001020#endif
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001021
1022 case BOOKE_INTERRUPT_DTLB_MISS: {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001023 unsigned long eaddr = vcpu->arch.fault_dear;
Hollis Blanchard7924bd42008-12-02 15:51:55 -06001024 int gtlb_index;
Hollis Blanchard475e7cd2009-01-03 16:23:00 -06001025 gpa_t gpaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001026 gfn_t gfn;
1027
Alexander Grafbf7ca4b2012-02-15 23:40:00 +00001028#ifdef CONFIG_KVM_E500V2
Scott Wooda4cd8b22011-06-14 18:34:41 -05001029 if (!(vcpu->arch.shared->msr & MSR_PR) &&
1030 (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
1031 kvmppc_map_magic(vcpu);
1032 kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
1033 r = RESUME_GUEST;
1034
1035 break;
1036 }
1037#endif
1038
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001039 /* Check the guest TLB. */
Hollis Blanchardfa86b8d2009-01-03 16:23:03 -06001040 gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
Hollis Blanchard7924bd42008-12-02 15:51:55 -06001041 if (gtlb_index < 0) {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001042 /* The guest didn't have a mapping for it. */
Liu Yudaf5e272010-02-02 19:44:35 +08001043 kvmppc_core_queue_dtlb_miss(vcpu,
1044 vcpu->arch.fault_dear,
1045 vcpu->arch.fault_esr);
Hollis Blanchardb52a6382009-01-03 16:23:11 -06001046 kvmppc_mmu_dtlb_miss(vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -06001047 kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001048 r = RESUME_GUEST;
1049 break;
1050 }
1051
Hollis Blanchardbe8d1ca2009-01-03 16:23:02 -06001052 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
Hollis Blanchard475e7cd2009-01-03 16:23:00 -06001053 gfn = gpaddr >> PAGE_SHIFT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001054
1055 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
1056 /* The guest TLB had a mapping, but the shadow TLB
1057 * didn't, and it is RAM. This could be because:
1058 * a) the entry is mapping the host kernel, or
1059 * b) the guest used a large mapping which we're faking
1060 * Either way, we need to satisfy the fault without
1061 * invoking the guest. */
Hollis Blanchard58a96212009-01-03 16:23:01 -06001062 kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
Hollis Blanchard7b701592008-12-02 15:51:58 -06001063 kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001064 r = RESUME_GUEST;
1065 } else {
1066 /* Guest has mapped and accessed a page which is not
1067 * actually RAM. */
Hollis Blanchard475e7cd2009-01-03 16:23:00 -06001068 vcpu->arch.paddr_accessed = gpaddr;
Alexander Graf6020c0f2012-03-12 02:26:30 +01001069 vcpu->arch.vaddr_accessed = eaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001070 r = kvmppc_emulate_mmio(run, vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -06001071 kvmppc_account_exit(vcpu, MMIO_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001072 }
1073
1074 break;
1075 }
1076
1077 case BOOKE_INTERRUPT_ITLB_MISS: {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001078 unsigned long eaddr = vcpu->arch.pc;
Hollis Blanchard89168612008-12-02 15:51:53 -06001079 gpa_t gpaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001080 gfn_t gfn;
Hollis Blanchard7924bd42008-12-02 15:51:55 -06001081 int gtlb_index;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001082
1083 r = RESUME_GUEST;
1084
1085 /* Check the guest TLB. */
Hollis Blanchardfa86b8d2009-01-03 16:23:03 -06001086 gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
Hollis Blanchard7924bd42008-12-02 15:51:55 -06001087 if (gtlb_index < 0) {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001088 /* The guest didn't have a mapping for it. */
Hollis Blanchardd4cf3892008-11-05 09:36:23 -06001089 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
Hollis Blanchardb52a6382009-01-03 16:23:11 -06001090 kvmppc_mmu_itlb_miss(vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -06001091 kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001092 break;
1093 }
1094
Hollis Blanchard7b701592008-12-02 15:51:58 -06001095 kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001096
Hollis Blanchardbe8d1ca2009-01-03 16:23:02 -06001097 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
Hollis Blanchard89168612008-12-02 15:51:53 -06001098 gfn = gpaddr >> PAGE_SHIFT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001099
1100 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
1101 /* The guest TLB had a mapping, but the shadow TLB
1102 * didn't. This could be because:
1103 * a) the entry is mapping the host kernel, or
1104 * b) the guest used a large mapping which we're faking
1105 * Either way, we need to satisfy the fault without
1106 * invoking the guest. */
Hollis Blanchard58a96212009-01-03 16:23:01 -06001107 kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001108 } else {
1109 /* Guest mapped and leaped at non-RAM! */
Hollis Blanchardd4cf3892008-11-05 09:36:23 -06001110 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001111 }
1112
1113 break;
1114 }
1115
Hollis Blanchard6a0ab732008-07-25 13:54:49 -05001116 case BOOKE_INTERRUPT_DEBUG: {
1117 u32 dbsr;
1118
1119 vcpu->arch.pc = mfspr(SPRN_CSRR0);
1120
1121 /* clear IAC events in DBSR register */
1122 dbsr = mfspr(SPRN_DBSR);
1123 dbsr &= DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4;
1124 mtspr(SPRN_DBSR, dbsr);
1125
1126 run->exit_reason = KVM_EXIT_DEBUG;
Hollis Blanchard7b701592008-12-02 15:51:58 -06001127 kvmppc_account_exit(vcpu, DEBUG_EXITS);
Hollis Blanchard6a0ab732008-07-25 13:54:49 -05001128 r = RESUME_HOST;
1129 break;
1130 }
1131
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001132 default:
1133 printk(KERN_EMERG "exit_nr %d\n", exit_nr);
1134 BUG();
1135 }
1136
Alexander Grafa8e4ef82012-02-16 14:07:37 +00001137 /*
1138 * To avoid clobbering exit_reason, only check for signals if we
1139 * aren't already exiting to userspace for some other reason.
1140 */
Alexander Graf03660ba2012-02-28 12:00:41 +01001141 if (!(r & RESUME_HOST)) {
1142 local_irq_disable();
Alexander Graf7ee78852012-08-13 12:44:41 +02001143 s = kvmppc_prepare_to_enter(vcpu);
1144 if (s <= 0) {
Alexander Graf24afa372012-08-12 12:42:30 +02001145 local_irq_enable();
Alexander Graf7ee78852012-08-13 12:44:41 +02001146 r = (s << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
Alexander Graf24afa372012-08-12 12:42:30 +02001147 } else {
Alexander Grafbd2be682012-08-13 01:04:19 +02001148 kvmppc_lazy_ee_enable();
Alexander Graf03660ba2012-02-28 12:00:41 +01001149 }
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001150 }
1151
1152 return r;
1153}
1154
Bharat Bhushand26f22c2013-02-24 18:57:11 +00001155static void kvmppc_set_tsr(struct kvm_vcpu *vcpu, u32 new_tsr)
1156{
1157 u32 old_tsr = vcpu->arch.tsr;
1158
1159 vcpu->arch.tsr = new_tsr;
1160
1161 if ((old_tsr ^ vcpu->arch.tsr) & (TSR_ENW | TSR_WIS))
1162 arm_next_watchdog(vcpu);
1163
1164 update_timer_ints(vcpu);
1165}
1166
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001167/* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
1168int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1169{
Hollis Blanchard082decf2010-08-07 10:33:56 -07001170 int i;
Alexander Grafaf8f38b2011-08-10 13:57:08 +02001171 int r;
Hollis Blanchard082decf2010-08-07 10:33:56 -07001172
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001173 vcpu->arch.pc = 0;
Scott Woodb5904972011-11-08 18:23:30 -06001174 vcpu->arch.shared->pir = vcpu->vcpu_id;
Alexander Graf8e5b26b2010-01-08 02:58:01 +01001175 kvmppc_set_gpr(vcpu, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */
Scott Woodd30f6e42011-12-20 15:34:43 +00001176 kvmppc_set_msr(vcpu, 0);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001177
Scott Woodd30f6e42011-12-20 15:34:43 +00001178#ifndef CONFIG_KVM_BOOKE_HV
1179 vcpu->arch.shadow_msr = MSR_USER | MSR_DE | MSR_IS | MSR_DS;
Hollis Blanchard49dd2c42008-07-25 13:54:53 -05001180 vcpu->arch.shadow_pid = 1;
Scott Woodd30f6e42011-12-20 15:34:43 +00001181 vcpu->arch.shared->msr = 0;
1182#endif
Hollis Blanchard49dd2c42008-07-25 13:54:53 -05001183
Hollis Blanchard082decf2010-08-07 10:33:56 -07001184 /* Eye-catching numbers so we know if the guest takes an interrupt
1185 * before it's programmed its own IVPR/IVORs. */
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001186 vcpu->arch.ivpr = 0x55550000;
Hollis Blanchard082decf2010-08-07 10:33:56 -07001187 for (i = 0; i < BOOKE_IRQPRIO_MAX; i++)
1188 vcpu->arch.ivor[i] = 0x7700 | i * 4;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001189
Hollis Blanchard73e75b412008-12-02 15:51:57 -06001190 kvmppc_init_timing_stats(vcpu);
1191
Alexander Grafaf8f38b2011-08-10 13:57:08 +02001192 r = kvmppc_core_vcpu_setup(vcpu);
1193 kvmppc_sanity_check(vcpu);
1194 return r;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001195}
1196
Bharat Bhushanf61c94b2012-08-08 20:38:19 +00001197int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
1198{
1199 /* setup watchdog timer once */
1200 spin_lock_init(&vcpu->arch.wdt_lock);
1201 setup_timer(&vcpu->arch.wdt_timer, kvmppc_watchdog_func,
1202 (unsigned long)vcpu);
1203
1204 return 0;
1205}
1206
1207void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
1208{
1209 del_timer_sync(&vcpu->arch.wdt_timer);
1210}
1211
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001212int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1213{
1214 int i;
1215
1216 regs->pc = vcpu->arch.pc;
Alexander Graf992b5b22010-01-08 02:58:02 +01001217 regs->cr = kvmppc_get_cr(vcpu);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001218 regs->ctr = vcpu->arch.ctr;
1219 regs->lr = vcpu->arch.lr;
Alexander Graf992b5b22010-01-08 02:58:02 +01001220 regs->xer = kvmppc_get_xer(vcpu);
Alexander Graf666e7252010-07-29 14:47:43 +02001221 regs->msr = vcpu->arch.shared->msr;
Alexander Grafde7906c2010-07-29 14:47:46 +02001222 regs->srr0 = vcpu->arch.shared->srr0;
1223 regs->srr1 = vcpu->arch.shared->srr1;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001224 regs->pid = vcpu->arch.pid;
Alexander Grafa73a9592010-07-29 14:47:47 +02001225 regs->sprg0 = vcpu->arch.shared->sprg0;
1226 regs->sprg1 = vcpu->arch.shared->sprg1;
1227 regs->sprg2 = vcpu->arch.shared->sprg2;
1228 regs->sprg3 = vcpu->arch.shared->sprg3;
Scott Woodb5904972011-11-08 18:23:30 -06001229 regs->sprg4 = vcpu->arch.shared->sprg4;
1230 regs->sprg5 = vcpu->arch.shared->sprg5;
1231 regs->sprg6 = vcpu->arch.shared->sprg6;
1232 regs->sprg7 = vcpu->arch.shared->sprg7;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001233
1234 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
Alexander Graf8e5b26b2010-01-08 02:58:01 +01001235 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001236
1237 return 0;
1238}
1239
1240int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1241{
1242 int i;
1243
1244 vcpu->arch.pc = regs->pc;
Alexander Graf992b5b22010-01-08 02:58:02 +01001245 kvmppc_set_cr(vcpu, regs->cr);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001246 vcpu->arch.ctr = regs->ctr;
1247 vcpu->arch.lr = regs->lr;
Alexander Graf992b5b22010-01-08 02:58:02 +01001248 kvmppc_set_xer(vcpu, regs->xer);
Hollis Blanchardb8fd68a2008-11-05 09:36:20 -06001249 kvmppc_set_msr(vcpu, regs->msr);
Alexander Grafde7906c2010-07-29 14:47:46 +02001250 vcpu->arch.shared->srr0 = regs->srr0;
1251 vcpu->arch.shared->srr1 = regs->srr1;
Scott Wood5ce941e2011-04-27 17:24:21 -05001252 kvmppc_set_pid(vcpu, regs->pid);
Alexander Grafa73a9592010-07-29 14:47:47 +02001253 vcpu->arch.shared->sprg0 = regs->sprg0;
1254 vcpu->arch.shared->sprg1 = regs->sprg1;
1255 vcpu->arch.shared->sprg2 = regs->sprg2;
1256 vcpu->arch.shared->sprg3 = regs->sprg3;
Scott Woodb5904972011-11-08 18:23:30 -06001257 vcpu->arch.shared->sprg4 = regs->sprg4;
1258 vcpu->arch.shared->sprg5 = regs->sprg5;
1259 vcpu->arch.shared->sprg6 = regs->sprg6;
1260 vcpu->arch.shared->sprg7 = regs->sprg7;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001261
Alexander Graf8e5b26b2010-01-08 02:58:01 +01001262 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
1263 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001264
1265 return 0;
1266}
1267
Scott Wood5ce941e2011-04-27 17:24:21 -05001268static void get_sregs_base(struct kvm_vcpu *vcpu,
1269 struct kvm_sregs *sregs)
1270{
1271 u64 tb = get_tb();
1272
1273 sregs->u.e.features |= KVM_SREGS_E_BASE;
1274
1275 sregs->u.e.csrr0 = vcpu->arch.csrr0;
1276 sregs->u.e.csrr1 = vcpu->arch.csrr1;
1277 sregs->u.e.mcsr = vcpu->arch.mcsr;
Scott Woodd30f6e42011-12-20 15:34:43 +00001278 sregs->u.e.esr = get_guest_esr(vcpu);
1279 sregs->u.e.dear = get_guest_dear(vcpu);
Scott Wood5ce941e2011-04-27 17:24:21 -05001280 sregs->u.e.tsr = vcpu->arch.tsr;
1281 sregs->u.e.tcr = vcpu->arch.tcr;
1282 sregs->u.e.dec = kvmppc_get_dec(vcpu, tb);
1283 sregs->u.e.tb = tb;
1284 sregs->u.e.vrsave = vcpu->arch.vrsave;
1285}
1286
1287static int set_sregs_base(struct kvm_vcpu *vcpu,
1288 struct kvm_sregs *sregs)
1289{
1290 if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
1291 return 0;
1292
1293 vcpu->arch.csrr0 = sregs->u.e.csrr0;
1294 vcpu->arch.csrr1 = sregs->u.e.csrr1;
1295 vcpu->arch.mcsr = sregs->u.e.mcsr;
Scott Woodd30f6e42011-12-20 15:34:43 +00001296 set_guest_esr(vcpu, sregs->u.e.esr);
1297 set_guest_dear(vcpu, sregs->u.e.dear);
Scott Wood5ce941e2011-04-27 17:24:21 -05001298 vcpu->arch.vrsave = sregs->u.e.vrsave;
Scott Wooddfd4d472011-11-17 12:39:59 +00001299 kvmppc_set_tcr(vcpu, sregs->u.e.tcr);
Scott Wood5ce941e2011-04-27 17:24:21 -05001300
Scott Wooddfd4d472011-11-17 12:39:59 +00001301 if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC) {
Scott Wood5ce941e2011-04-27 17:24:21 -05001302 vcpu->arch.dec = sregs->u.e.dec;
Scott Wooddfd4d472011-11-17 12:39:59 +00001303 kvmppc_emulate_dec(vcpu);
1304 }
Scott Wood5ce941e2011-04-27 17:24:21 -05001305
Bharat Bhushand26f22c2013-02-24 18:57:11 +00001306 if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR)
1307 kvmppc_set_tsr(vcpu, sregs->u.e.tsr);
Scott Wood5ce941e2011-04-27 17:24:21 -05001308
1309 return 0;
1310}
1311
1312static void get_sregs_arch206(struct kvm_vcpu *vcpu,
1313 struct kvm_sregs *sregs)
1314{
1315 sregs->u.e.features |= KVM_SREGS_E_ARCH206;
1316
Scott Wood841741f22011-09-02 17:39:37 -05001317 sregs->u.e.pir = vcpu->vcpu_id;
Scott Wood5ce941e2011-04-27 17:24:21 -05001318 sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0;
1319 sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1;
1320 sregs->u.e.decar = vcpu->arch.decar;
1321 sregs->u.e.ivpr = vcpu->arch.ivpr;
1322}
1323
1324static int set_sregs_arch206(struct kvm_vcpu *vcpu,
1325 struct kvm_sregs *sregs)
1326{
1327 if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206))
1328 return 0;
1329
Scott Wood841741f22011-09-02 17:39:37 -05001330 if (sregs->u.e.pir != vcpu->vcpu_id)
Scott Wood5ce941e2011-04-27 17:24:21 -05001331 return -EINVAL;
1332
1333 vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0;
1334 vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1;
1335 vcpu->arch.decar = sregs->u.e.decar;
1336 vcpu->arch.ivpr = sregs->u.e.ivpr;
1337
1338 return 0;
1339}
1340
1341void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
1342{
1343 sregs->u.e.features |= KVM_SREGS_E_IVOR;
1344
1345 sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
1346 sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
1347 sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
1348 sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
1349 sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
1350 sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
1351 sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
1352 sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
1353 sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
1354 sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
1355 sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
1356 sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
1357 sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
1358 sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
1359 sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
1360 sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
1361}
1362
1363int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
1364{
1365 if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
1366 return 0;
1367
1368 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0];
1369 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1];
1370 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2];
1371 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3];
1372 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4];
1373 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5];
1374 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6];
1375 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7];
1376 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8];
1377 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9];
1378 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10];
1379 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11];
1380 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12];
1381 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13];
1382 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14];
1383 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15];
1384
1385 return 0;
1386}
1387
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001388int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1389 struct kvm_sregs *sregs)
1390{
Scott Wood5ce941e2011-04-27 17:24:21 -05001391 sregs->pvr = vcpu->arch.pvr;
1392
1393 get_sregs_base(vcpu, sregs);
1394 get_sregs_arch206(vcpu, sregs);
1395 kvmppc_core_get_sregs(vcpu, sregs);
1396 return 0;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001397}
1398
1399int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1400 struct kvm_sregs *sregs)
1401{
Scott Wood5ce941e2011-04-27 17:24:21 -05001402 int ret;
1403
1404 if (vcpu->arch.pvr != sregs->pvr)
1405 return -EINVAL;
1406
1407 ret = set_sregs_base(vcpu, sregs);
1408 if (ret < 0)
1409 return ret;
1410
1411 ret = set_sregs_arch206(vcpu, sregs);
1412 if (ret < 0)
1413 return ret;
1414
1415 return kvmppc_core_set_sregs(vcpu, sregs);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001416}
1417
Paul Mackerras31f34382011-12-12 12:26:50 +00001418int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1419{
Mihai Caraman35b299e2013-04-11 00:03:07 +00001420 int r = 0;
1421 union kvmppc_one_reg val;
1422 int size;
1423 long int i;
1424
1425 size = one_reg_size(reg->id);
1426 if (size > sizeof(val))
1427 return -EINVAL;
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001428
1429 switch (reg->id) {
1430 case KVM_REG_PPC_IAC1:
1431 case KVM_REG_PPC_IAC2:
1432 case KVM_REG_PPC_IAC3:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001433 case KVM_REG_PPC_IAC4:
1434 i = reg->id - KVM_REG_PPC_IAC1;
1435 val = get_reg_val(reg->id, vcpu->arch.dbg_reg.iac[i]);
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001436 break;
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001437 case KVM_REG_PPC_DAC1:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001438 case KVM_REG_PPC_DAC2:
1439 i = reg->id - KVM_REG_PPC_DAC1;
1440 val = get_reg_val(reg->id, vcpu->arch.dbg_reg.dac[i]);
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001441 break;
Alexander Graf324b3e62013-01-04 18:28:51 +01001442 case KVM_REG_PPC_EPR: {
1443 u32 epr = get_guest_epr(vcpu);
Mihai Caraman35b299e2013-04-11 00:03:07 +00001444 val = get_reg_val(reg->id, epr);
Alexander Graf324b3e62013-01-04 18:28:51 +01001445 break;
1446 }
Mihai Caraman352df1d2012-10-11 06:13:29 +00001447#if defined(CONFIG_64BIT)
1448 case KVM_REG_PPC_EPCR:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001449 val = get_reg_val(reg->id, vcpu->arch.epcr);
Mihai Caraman352df1d2012-10-11 06:13:29 +00001450 break;
1451#endif
Bharat Bhushan78accda2013-02-24 18:57:12 +00001452 case KVM_REG_PPC_TCR:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001453 val = get_reg_val(reg->id, vcpu->arch.tcr);
Bharat Bhushan78accda2013-02-24 18:57:12 +00001454 break;
1455 case KVM_REG_PPC_TSR:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001456 val = get_reg_val(reg->id, vcpu->arch.tsr);
Bharat Bhushan78accda2013-02-24 18:57:12 +00001457 break;
Mihai Caraman35b299e2013-04-11 00:03:07 +00001458 case KVM_REG_PPC_DEBUG_INST:
1459 val = get_reg_val(reg->id, KVMPPC_INST_EHPRIV);
Bharat Bhushan8c32a2e2013-03-20 20:24:58 +00001460 break;
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001461 default:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001462 r = kvmppc_get_one_reg(vcpu, reg->id, &val);
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001463 break;
1464 }
Mihai Caraman35b299e2013-04-11 00:03:07 +00001465
1466 if (r)
1467 return r;
1468
1469 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
1470 r = -EFAULT;
1471
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001472 return r;
Paul Mackerras31f34382011-12-12 12:26:50 +00001473}
1474
1475int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1476{
Mihai Caraman35b299e2013-04-11 00:03:07 +00001477 int r = 0;
1478 union kvmppc_one_reg val;
1479 int size;
1480 long int i;
1481
1482 size = one_reg_size(reg->id);
1483 if (size > sizeof(val))
1484 return -EINVAL;
1485
1486 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
1487 return -EFAULT;
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001488
1489 switch (reg->id) {
1490 case KVM_REG_PPC_IAC1:
1491 case KVM_REG_PPC_IAC2:
1492 case KVM_REG_PPC_IAC3:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001493 case KVM_REG_PPC_IAC4:
1494 i = reg->id - KVM_REG_PPC_IAC1;
1495 vcpu->arch.dbg_reg.iac[i] = set_reg_val(reg->id, val);
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001496 break;
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001497 case KVM_REG_PPC_DAC1:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001498 case KVM_REG_PPC_DAC2:
1499 i = reg->id - KVM_REG_PPC_DAC1;
1500 vcpu->arch.dbg_reg.dac[i] = set_reg_val(reg->id, val);
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001501 break;
Alexander Graf324b3e62013-01-04 18:28:51 +01001502 case KVM_REG_PPC_EPR: {
Mihai Caraman35b299e2013-04-11 00:03:07 +00001503 u32 new_epr = set_reg_val(reg->id, val);
1504 kvmppc_set_epr(vcpu, new_epr);
Alexander Graf324b3e62013-01-04 18:28:51 +01001505 break;
1506 }
Mihai Caraman352df1d2012-10-11 06:13:29 +00001507#if defined(CONFIG_64BIT)
1508 case KVM_REG_PPC_EPCR: {
Mihai Caraman35b299e2013-04-11 00:03:07 +00001509 u32 new_epcr = set_reg_val(reg->id, val);
1510 kvmppc_set_epcr(vcpu, new_epcr);
Mihai Caraman352df1d2012-10-11 06:13:29 +00001511 break;
1512 }
1513#endif
Bharat Bhushan78accda2013-02-24 18:57:12 +00001514 case KVM_REG_PPC_OR_TSR: {
Mihai Caraman35b299e2013-04-11 00:03:07 +00001515 u32 tsr_bits = set_reg_val(reg->id, val);
Bharat Bhushan78accda2013-02-24 18:57:12 +00001516 kvmppc_set_tsr_bits(vcpu, tsr_bits);
1517 break;
1518 }
1519 case KVM_REG_PPC_CLEAR_TSR: {
Mihai Caraman35b299e2013-04-11 00:03:07 +00001520 u32 tsr_bits = set_reg_val(reg->id, val);
Bharat Bhushan78accda2013-02-24 18:57:12 +00001521 kvmppc_clr_tsr_bits(vcpu, tsr_bits);
1522 break;
1523 }
1524 case KVM_REG_PPC_TSR: {
Mihai Caraman35b299e2013-04-11 00:03:07 +00001525 u32 tsr = set_reg_val(reg->id, val);
Bharat Bhushan78accda2013-02-24 18:57:12 +00001526 kvmppc_set_tsr(vcpu, tsr);
1527 break;
1528 }
1529 case KVM_REG_PPC_TCR: {
Mihai Caraman35b299e2013-04-11 00:03:07 +00001530 u32 tcr = set_reg_val(reg->id, val);
Bharat Bhushan78accda2013-02-24 18:57:12 +00001531 kvmppc_set_tcr(vcpu, tcr);
1532 break;
1533 }
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001534 default:
Mihai Caraman35b299e2013-04-11 00:03:07 +00001535 r = kvmppc_set_one_reg(vcpu, reg->id, &val);
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001536 break;
1537 }
Mihai Caraman35b299e2013-04-11 00:03:07 +00001538
Bharat Bhushan6df8d3f2012-08-08 21:17:55 +00001539 return r;
Paul Mackerras31f34382011-12-12 12:26:50 +00001540}
1541
Bharat Bhushan092d62e2013-04-08 00:32:12 +00001542int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1543 struct kvm_guest_debug *dbg)
1544{
1545 return -EINVAL;
1546}
1547
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001548int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1549{
1550 return -ENOTSUPP;
1551}
1552
1553int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1554{
1555 return -ENOTSUPP;
1556}
1557
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001558int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1559 struct kvm_translation *tr)
1560{
Avi Kivity98001d82010-05-13 11:05:49 +03001561 int r;
1562
Avi Kivity98001d82010-05-13 11:05:49 +03001563 r = kvmppc_core_vcpu_translate(vcpu, tr);
Avi Kivity98001d82010-05-13 11:05:49 +03001564 return r;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001565}
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001566
Alexander Graf4e755752009-10-30 05:47:01 +00001567int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
1568{
1569 return -ENOTSUPP;
1570}
1571
Paul Mackerrasa66b48c2012-09-11 13:27:46 +00001572void kvmppc_core_free_memslot(struct kvm_memory_slot *free,
1573 struct kvm_memory_slot *dont)
1574{
1575}
1576
1577int kvmppc_core_create_memslot(struct kvm_memory_slot *slot,
1578 unsigned long npages)
1579{
1580 return 0;
1581}
1582
Paul Mackerrasf9e05542011-06-29 00:19:22 +00001583int kvmppc_core_prepare_memory_region(struct kvm *kvm,
Paul Mackerrasa66b48c2012-09-11 13:27:46 +00001584 struct kvm_memory_slot *memslot,
Paul Mackerrasf9e05542011-06-29 00:19:22 +00001585 struct kvm_userspace_memory_region *mem)
1586{
1587 return 0;
1588}
1589
1590void kvmppc_core_commit_memory_region(struct kvm *kvm,
Paul Mackerrasdfe49db2012-09-11 13:28:18 +00001591 struct kvm_userspace_memory_region *mem,
Takuya Yoshikawa84826442013-02-27 19:45:25 +09001592 const struct kvm_memory_slot *old)
Paul Mackerrasdfe49db2012-09-11 13:28:18 +00001593{
1594}
1595
1596void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
Paul Mackerrasf9e05542011-06-29 00:19:22 +00001597{
1598}
1599
Mihai Caraman38f98822012-10-11 06:13:27 +00001600void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr)
1601{
1602#if defined(CONFIG_64BIT)
1603 vcpu->arch.epcr = new_epcr;
1604#ifdef CONFIG_KVM_BOOKE_HV
1605 vcpu->arch.shadow_epcr &= ~SPRN_EPCR_GICM;
1606 if (vcpu->arch.epcr & SPRN_EPCR_ICM)
1607 vcpu->arch.shadow_epcr |= SPRN_EPCR_GICM;
1608#endif
1609#endif
1610}
1611
Scott Wooddfd4d472011-11-17 12:39:59 +00001612void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr)
1613{
1614 vcpu->arch.tcr = new_tcr;
Bharat Bhushanf61c94b2012-08-08 20:38:19 +00001615 arm_next_watchdog(vcpu);
Scott Wooddfd4d472011-11-17 12:39:59 +00001616 update_timer_ints(vcpu);
1617}
1618
1619void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
1620{
1621 set_bits(tsr_bits, &vcpu->arch.tsr);
1622 smp_wmb();
1623 kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
1624 kvm_vcpu_kick(vcpu);
1625}
1626
1627void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
1628{
1629 clear_bits(tsr_bits, &vcpu->arch.tsr);
Bharat Bhushanf61c94b2012-08-08 20:38:19 +00001630
1631 /*
1632 * We may have stopped the watchdog due to
1633 * being stuck on final expiration.
1634 */
1635 if (tsr_bits & (TSR_ENW | TSR_WIS))
1636 arm_next_watchdog(vcpu);
1637
Scott Wooddfd4d472011-11-17 12:39:59 +00001638 update_timer_ints(vcpu);
1639}
1640
1641void kvmppc_decrementer_func(unsigned long data)
1642{
1643 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
1644
Bharat Bhushan21bd0002012-05-20 23:21:23 +00001645 if (vcpu->arch.tcr & TCR_ARE) {
1646 vcpu->arch.dec = vcpu->arch.decar;
1647 kvmppc_emulate_dec(vcpu);
1648 }
1649
Scott Wooddfd4d472011-11-17 12:39:59 +00001650 kvmppc_set_tsr_bits(vcpu, TSR_DIS);
1651}
1652
Scott Wood94fa9d92011-12-20 15:34:22 +00001653void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1654{
Paul Mackerrasa47d72f2012-09-20 19:35:51 +00001655 vcpu->cpu = smp_processor_id();
Scott Woodd30f6e42011-12-20 15:34:43 +00001656 current->thread.kvm_vcpu = vcpu;
Scott Wood94fa9d92011-12-20 15:34:22 +00001657}
1658
1659void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu)
1660{
Scott Woodd30f6e42011-12-20 15:34:43 +00001661 current->thread.kvm_vcpu = NULL;
Paul Mackerrasa47d72f2012-09-20 19:35:51 +00001662 vcpu->cpu = -1;
Scott Wood94fa9d92011-12-20 15:34:22 +00001663}
1664
Stephen Rothwell2986b8c2009-06-02 11:46:14 +10001665int __init kvmppc_booke_init(void)
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001666{
Scott Woodd30f6e42011-12-20 15:34:43 +00001667#ifndef CONFIG_KVM_BOOKE_HV
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001668 unsigned long ivor[16];
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001669 unsigned long *handler = kvmppc_booke_handler_addr;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001670 unsigned long max_ivor = 0;
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001671 unsigned long handler_len;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001672 int i;
1673
1674 /* We install our own exception handlers by hijacking IVPR. IVPR must
1675 * be 16-bit aligned, so we need a 64KB allocation. */
1676 kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
1677 VCPU_SIZE_ORDER);
1678 if (!kvmppc_booke_handlers)
1679 return -ENOMEM;
1680
1681 /* XXX make sure our handlers are smaller than Linux's */
1682
1683 /* Copy our interrupt handlers to match host IVORs. That way we don't
1684 * have to swap the IVORs on every guest/host transition. */
1685 ivor[0] = mfspr(SPRN_IVOR0);
1686 ivor[1] = mfspr(SPRN_IVOR1);
1687 ivor[2] = mfspr(SPRN_IVOR2);
1688 ivor[3] = mfspr(SPRN_IVOR3);
1689 ivor[4] = mfspr(SPRN_IVOR4);
1690 ivor[5] = mfspr(SPRN_IVOR5);
1691 ivor[6] = mfspr(SPRN_IVOR6);
1692 ivor[7] = mfspr(SPRN_IVOR7);
1693 ivor[8] = mfspr(SPRN_IVOR8);
1694 ivor[9] = mfspr(SPRN_IVOR9);
1695 ivor[10] = mfspr(SPRN_IVOR10);
1696 ivor[11] = mfspr(SPRN_IVOR11);
1697 ivor[12] = mfspr(SPRN_IVOR12);
1698 ivor[13] = mfspr(SPRN_IVOR13);
1699 ivor[14] = mfspr(SPRN_IVOR14);
1700 ivor[15] = mfspr(SPRN_IVOR15);
1701
1702 for (i = 0; i < 16; i++) {
1703 if (ivor[i] > max_ivor)
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001704 max_ivor = i;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001705
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001706 handler_len = handler[i + 1] - handler[i];
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001707 memcpy((void *)kvmppc_booke_handlers + ivor[i],
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001708 (void *)handler[i], handler_len);
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001709 }
Bharat Bhushan1d542d92013-01-15 22:24:39 +00001710
1711 handler_len = handler[max_ivor + 1] - handler[max_ivor];
1712 flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers +
1713 ivor[max_ivor] + handler_len);
Scott Woodd30f6e42011-12-20 15:34:43 +00001714#endif /* !BOOKE_HV */
Hollis Blancharddb93f572008-11-05 09:36:18 -06001715 return 0;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001716}
1717
Hollis Blancharddb93f572008-11-05 09:36:18 -06001718void __exit kvmppc_booke_exit(void)
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001719{
1720 free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
1721 kvm_exit();
1722}