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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>
20 */
21
22#include <linux/errno.h>
23#include <linux/err.h>
24#include <linux/kvm_host.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090025#include <linux/gfp.h>
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050026#include <linux/module.h>
27#include <linux/vmalloc.h>
28#include <linux/fs.h>
Hollis Blanchard7924bd42008-12-02 15:51:55 -060029
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050030#include <asm/cputable.h>
31#include <asm/uaccess.h>
32#include <asm/kvm_ppc.h>
Hollis Blanchard73e75b42008-12-02 15:51:57 -060033#include "timing.h"
Hollis Blanchardd9fbd032008-11-05 09:36:13 -060034#include <asm/cacheflush.h>
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050035
Hollis Blanchard75f74f02008-11-05 09:36:16 -060036#include "booke.h"
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050037
Hollis Blanchardd9fbd032008-11-05 09:36:13 -060038unsigned long kvmppc_booke_handlers;
39
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050040#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
41#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
42
43struct kvm_stats_debugfs_item debugfs_entries[] = {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050044 { "mmio", VCPU_STAT(mmio_exits) },
45 { "dcr", VCPU_STAT(dcr_exits) },
46 { "sig", VCPU_STAT(signal_exits) },
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050047 { "itlb_r", VCPU_STAT(itlb_real_miss_exits) },
48 { "itlb_v", VCPU_STAT(itlb_virt_miss_exits) },
49 { "dtlb_r", VCPU_STAT(dtlb_real_miss_exits) },
50 { "dtlb_v", VCPU_STAT(dtlb_virt_miss_exits) },
51 { "sysc", VCPU_STAT(syscall_exits) },
52 { "isi", VCPU_STAT(isi_exits) },
53 { "dsi", VCPU_STAT(dsi_exits) },
54 { "inst_emu", VCPU_STAT(emulated_inst_exits) },
55 { "dec", VCPU_STAT(dec_exits) },
56 { "ext_intr", VCPU_STAT(ext_intr_exits) },
Hollis Blanchard45c5eb62008-04-25 17:55:49 -050057 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050058 { NULL }
59};
60
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050061/* TODO: use vcpu_printf() */
62void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
63{
64 int i;
65
Alexander Graf666e7252010-07-29 14:47:43 +020066 printk("pc: %08lx msr: %08llx\n", vcpu->arch.pc, vcpu->arch.shared->msr);
Hollis Blanchard5cf8ca22008-11-05 09:36:19 -060067 printk("lr: %08lx ctr: %08lx\n", vcpu->arch.lr, vcpu->arch.ctr);
Alexander Grafde7906c2010-07-29 14:47:46 +020068 printk("srr0: %08llx srr1: %08llx\n", vcpu->arch.shared->srr0,
69 vcpu->arch.shared->srr1);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050070
71 printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);
72
73 for (i = 0; i < 32; i += 4) {
Hollis Blanchard5cf8ca22008-11-05 09:36:19 -060074 printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
Alexander Graf8e5b26b2010-01-08 02:58:01 +010075 kvmppc_get_gpr(vcpu, i),
76 kvmppc_get_gpr(vcpu, i+1),
77 kvmppc_get_gpr(vcpu, i+2),
78 kvmppc_get_gpr(vcpu, i+3));
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050079 }
80}
81
Scott Wood4cd35f62011-06-14 18:34:31 -050082#ifdef CONFIG_SPE
83void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu)
84{
85 preempt_disable();
86 enable_kernel_spe();
87 kvmppc_save_guest_spe(vcpu);
88 vcpu->arch.shadow_msr &= ~MSR_SPE;
89 preempt_enable();
90}
91
92static void kvmppc_vcpu_enable_spe(struct kvm_vcpu *vcpu)
93{
94 preempt_disable();
95 enable_kernel_spe();
96 kvmppc_load_guest_spe(vcpu);
97 vcpu->arch.shadow_msr |= MSR_SPE;
98 preempt_enable();
99}
100
101static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
102{
103 if (vcpu->arch.shared->msr & MSR_SPE) {
104 if (!(vcpu->arch.shadow_msr & MSR_SPE))
105 kvmppc_vcpu_enable_spe(vcpu);
106 } else if (vcpu->arch.shadow_msr & MSR_SPE) {
107 kvmppc_vcpu_disable_spe(vcpu);
108 }
109}
110#else
111static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
112{
113}
114#endif
115
Liu Yudd9ebf1f2011-06-14 18:35:14 -0500116/*
117 * Helper function for "full" MSR writes. No need to call this if only
118 * EE/CE/ME/DE/RI are changing.
119 */
Scott Wood4cd35f62011-06-14 18:34:31 -0500120void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
121{
Liu Yudd9ebf1f2011-06-14 18:35:14 -0500122 u32 old_msr = vcpu->arch.shared->msr;
Scott Wood4cd35f62011-06-14 18:34:31 -0500123
124 vcpu->arch.shared->msr = new_msr;
125
Liu Yudd9ebf1f2011-06-14 18:35:14 -0500126 kvmppc_mmu_msr_notify(vcpu, old_msr);
Scott Wood4cd35f62011-06-14 18:34:31 -0500127 kvmppc_vcpu_sync_spe(vcpu);
128}
129
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600130static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
131 unsigned int priority)
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600132{
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600133 set_bit(priority, &vcpu->arch.pending_exceptions);
134}
135
Liu Yudaf5e272010-02-02 19:44:35 +0800136static void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu,
137 ulong dear_flags, ulong esr_flags)
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600138{
Liu Yudaf5e272010-02-02 19:44:35 +0800139 vcpu->arch.queued_dear = dear_flags;
140 vcpu->arch.queued_esr = esr_flags;
141 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
142}
143
144static void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
145 ulong dear_flags, ulong esr_flags)
146{
147 vcpu->arch.queued_dear = dear_flags;
148 vcpu->arch.queued_esr = esr_flags;
149 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
150}
151
152static void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
153 ulong esr_flags)
154{
155 vcpu->arch.queued_esr = esr_flags;
156 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
157}
158
159void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags)
160{
161 vcpu->arch.queued_esr = esr_flags;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600162 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600163}
164
165void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
166{
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600167 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600168}
169
170int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
171{
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600172 return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600173}
174
Alexander Graf7706664d2009-12-21 20:21:24 +0100175void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
176{
177 clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
178}
179
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600180void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
181 struct kvm_interrupt *irq)
182{
Alexander Grafc5335f12010-08-30 14:03:24 +0200183 unsigned int prio = BOOKE_IRQPRIO_EXTERNAL;
184
185 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
186 prio = BOOKE_IRQPRIO_EXTERNAL_LEVEL;
187
188 kvmppc_booke_queue_irqprio(vcpu, prio);
Hollis Blanchard9dd921c2008-11-05 09:36:14 -0600189}
190
Alexander Graf4496f972010-04-07 10:03:25 +0200191void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
192 struct kvm_interrupt *irq)
193{
194 clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions);
Alexander Grafc5335f12010-08-30 14:03:24 +0200195 clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions);
Alexander Graf4496f972010-04-07 10:03:25 +0200196}
197
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600198/* Deliver the interrupt of the corresponding priority, if possible. */
199static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
200 unsigned int priority)
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500201{
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600202 int allowed = 0;
Asias He6045be52010-06-19 16:52:12 +0800203 ulong uninitialized_var(msr_mask);
Liu Yudaf5e272010-02-02 19:44:35 +0800204 bool update_esr = false, update_dear = false;
Alexander Graf5c6cedf2010-07-29 14:47:49 +0200205 ulong crit_raw = vcpu->arch.shared->critical;
206 ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
207 bool crit;
Alexander Grafc5335f12010-08-30 14:03:24 +0200208 bool keep_irq = false;
Alexander Graf5c6cedf2010-07-29 14:47:49 +0200209
210 /* Truncate crit indicators in 32 bit mode */
211 if (!(vcpu->arch.shared->msr & MSR_SF)) {
212 crit_raw &= 0xffffffff;
213 crit_r1 &= 0xffffffff;
214 }
215
216 /* Critical section when crit == r1 */
217 crit = (crit_raw == crit_r1);
218 /* ... and we're in supervisor mode */
219 crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500220
Alexander Grafc5335f12010-08-30 14:03:24 +0200221 if (priority == BOOKE_IRQPRIO_EXTERNAL_LEVEL) {
222 priority = BOOKE_IRQPRIO_EXTERNAL;
223 keep_irq = true;
224 }
225
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600226 switch (priority) {
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600227 case BOOKE_IRQPRIO_DTLB_MISS:
Liu Yudaf5e272010-02-02 19:44:35 +0800228 case BOOKE_IRQPRIO_DATA_STORAGE:
229 update_dear = true;
230 /* fall through */
231 case BOOKE_IRQPRIO_INST_STORAGE:
232 case BOOKE_IRQPRIO_PROGRAM:
233 update_esr = true;
234 /* fall through */
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600235 case BOOKE_IRQPRIO_ITLB_MISS:
236 case BOOKE_IRQPRIO_SYSCALL:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600237 case BOOKE_IRQPRIO_FP_UNAVAIL:
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600238 case BOOKE_IRQPRIO_SPE_UNAVAIL:
239 case BOOKE_IRQPRIO_SPE_FP_DATA:
240 case BOOKE_IRQPRIO_SPE_FP_ROUND:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600241 case BOOKE_IRQPRIO_AP_UNAVAIL:
242 case BOOKE_IRQPRIO_ALIGNMENT:
243 allowed = 1;
244 msr_mask = MSR_CE|MSR_ME|MSR_DE;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500245 break;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600246 case BOOKE_IRQPRIO_CRITICAL:
247 case BOOKE_IRQPRIO_WATCHDOG:
Alexander Graf666e7252010-07-29 14:47:43 +0200248 allowed = vcpu->arch.shared->msr & MSR_CE;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600249 msr_mask = MSR_ME;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500250 break;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600251 case BOOKE_IRQPRIO_MACHINE_CHECK:
Alexander Graf666e7252010-07-29 14:47:43 +0200252 allowed = vcpu->arch.shared->msr & MSR_ME;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600253 msr_mask = 0;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500254 break;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600255 case BOOKE_IRQPRIO_DECREMENTER:
256 case BOOKE_IRQPRIO_FIT:
Scott Wooddfd4d472011-11-17 12:39:59 +0000257 keep_irq = true;
258 /* fall through */
259 case BOOKE_IRQPRIO_EXTERNAL:
Alexander Graf666e7252010-07-29 14:47:43 +0200260 allowed = vcpu->arch.shared->msr & MSR_EE;
Alexander Graf5c6cedf2010-07-29 14:47:49 +0200261 allowed = allowed && !crit;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600262 msr_mask = MSR_CE|MSR_ME|MSR_DE;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500263 break;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600264 case BOOKE_IRQPRIO_DEBUG:
Alexander Graf666e7252010-07-29 14:47:43 +0200265 allowed = vcpu->arch.shared->msr & MSR_DE;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600266 msr_mask = MSR_ME;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500267 break;
268 }
269
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600270 if (allowed) {
Alexander Grafde7906c2010-07-29 14:47:46 +0200271 vcpu->arch.shared->srr0 = vcpu->arch.pc;
272 vcpu->arch.shared->srr1 = vcpu->arch.shared->msr;
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600273 vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[priority];
Liu Yudaf5e272010-02-02 19:44:35 +0800274 if (update_esr == true)
Scott Woodb5904972011-11-08 18:23:30 -0600275 vcpu->arch.shared->esr = vcpu->arch.queued_esr;
Liu Yudaf5e272010-02-02 19:44:35 +0800276 if (update_dear == true)
Alexander Graf5e030182010-07-29 14:47:45 +0200277 vcpu->arch.shared->dar = vcpu->arch.queued_dear;
Alexander Graf666e7252010-07-29 14:47:43 +0200278 kvmppc_set_msr(vcpu, vcpu->arch.shared->msr & msr_mask);
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600279
Alexander Grafc5335f12010-08-30 14:03:24 +0200280 if (!keep_irq)
281 clear_bit(priority, &vcpu->arch.pending_exceptions);
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600282 }
283
284 return allowed;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500285}
286
Scott Wooddfd4d472011-11-17 12:39:59 +0000287static void update_timer_ints(struct kvm_vcpu *vcpu)
288{
289 if ((vcpu->arch.tcr & TCR_DIE) && (vcpu->arch.tsr & TSR_DIS))
290 kvmppc_core_queue_dec(vcpu);
291 else
292 kvmppc_core_dequeue_dec(vcpu);
293}
294
Scott Woodc59a6a32011-11-08 18:23:25 -0600295static void kvmppc_core_check_exceptions(struct kvm_vcpu *vcpu)
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500296{
297 unsigned long *pending = &vcpu->arch.pending_exceptions;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500298 unsigned int priority;
299
Scott Wooddfd4d472011-11-17 12:39:59 +0000300 if (vcpu->requests) {
301 if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu)) {
302 smp_mb();
303 update_timer_ints(vcpu);
304 }
305 }
306
Hollis Blanchard9ab80842008-11-05 09:36:22 -0600307 priority = __ffs(*pending);
Hollis Blanchardbdc89f12009-01-03 16:23:12 -0600308 while (priority <= BOOKE_IRQPRIO_MAX) {
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600309 if (kvmppc_booke_irqprio_deliver(vcpu, priority))
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500310 break;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500311
312 priority = find_next_bit(pending,
313 BITS_PER_BYTE * sizeof(*pending),
314 priority + 1);
315 }
Alexander Graf90bba352010-07-29 14:47:51 +0200316
317 /* Tell the guest about our interrupt status */
Scott Wood29ac26e2011-11-08 18:23:27 -0600318 vcpu->arch.shared->int_pending = !!*pending;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500319}
320
Scott Woodc59a6a32011-11-08 18:23:25 -0600321/* Check pending exceptions and deliver one, if possible. */
322void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
323{
324 WARN_ON_ONCE(!irqs_disabled());
325
326 kvmppc_core_check_exceptions(vcpu);
327
328 if (vcpu->arch.shared->msr & MSR_WE) {
329 local_irq_enable();
330 kvm_vcpu_block(vcpu);
331 local_irq_disable();
332
333 kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
334 kvmppc_core_check_exceptions(vcpu);
335 };
336}
337
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000338int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
339{
340 int ret;
341
Alexander Grafaf8f38b2011-08-10 13:57:08 +0200342 if (!vcpu->arch.sane) {
343 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
344 return -EINVAL;
345 }
346
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000347 local_irq_disable();
Scott Wood1d1ef222011-11-08 16:11:59 -0600348
Scott Wood25051b5a2011-11-08 18:23:23 -0600349 kvmppc_core_prepare_to_enter(vcpu);
350
Scott Wood1d1ef222011-11-08 16:11:59 -0600351 if (signal_pending(current)) {
352 kvm_run->exit_reason = KVM_EXIT_INTR;
353 ret = -EINTR;
354 goto out;
355 }
356
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000357 kvm_guest_enter();
358 ret = __kvmppc_vcpu_run(kvm_run, vcpu);
359 kvm_guest_exit();
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000360
Scott Wood1d1ef222011-11-08 16:11:59 -0600361out:
362 local_irq_enable();
Paul Mackerrasdf6909e52011-06-29 00:19:50 +0000363 return ret;
364}
365
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500366/**
367 * kvmppc_handle_exit
368 *
369 * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
370 */
371int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
372 unsigned int exit_nr)
373{
374 enum emulation_result er;
375 int r = RESUME_HOST;
376
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600377 /* update before a new last_exit_type is rewritten */
378 kvmppc_update_timing_stats(vcpu);
379
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500380 local_irq_enable();
381
382 run->exit_reason = KVM_EXIT_UNKNOWN;
383 run->ready_for_interrupt_injection = 1;
384
385 switch (exit_nr) {
386 case BOOKE_INTERRUPT_MACHINE_CHECK:
387 printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
388 kvmppc_dump_vcpu(vcpu);
389 r = RESUME_HOST;
390 break;
391
392 case BOOKE_INTERRUPT_EXTERNAL:
Hollis Blanchard7b701592008-12-02 15:51:58 -0600393 kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
Hollis Blanchard1b6766c2008-11-05 09:36:21 -0600394 if (need_resched())
395 cond_resched();
396 r = RESUME_GUEST;
397 break;
398
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500399 case BOOKE_INTERRUPT_DECREMENTER:
400 /* Since we switched IVPR back to the host's value, the host
401 * handled this interrupt the moment we enabled interrupts.
402 * Now we just offer it a chance to reschedule the guest. */
Hollis Blanchard7b701592008-12-02 15:51:58 -0600403 kvmppc_account_exit(vcpu, DEC_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500404 if (need_resched())
405 cond_resched();
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500406 r = RESUME_GUEST;
407 break;
408
409 case BOOKE_INTERRUPT_PROGRAM:
Alexander Graf666e7252010-07-29 14:47:43 +0200410 if (vcpu->arch.shared->msr & MSR_PR) {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500411 /* Program traps generated by user-level software must be handled
412 * by the guest kernel. */
Liu Yudaf5e272010-02-02 19:44:35 +0800413 kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500414 r = RESUME_GUEST;
Hollis Blanchard7b701592008-12-02 15:51:58 -0600415 kvmppc_account_exit(vcpu, USR_PR_INST);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500416 break;
417 }
418
419 er = kvmppc_emulate_instruction(run, vcpu);
420 switch (er) {
421 case EMULATE_DONE:
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600422 /* don't overwrite subtypes, just account kvm_stats */
Hollis Blanchard7b701592008-12-02 15:51:58 -0600423 kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500424 /* Future optimization: only reload non-volatiles if
425 * they were actually modified by emulation. */
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500426 r = RESUME_GUEST_NV;
427 break;
428 case EMULATE_DO_DCR:
429 run->exit_reason = KVM_EXIT_DCR;
430 r = RESUME_HOST;
431 break;
432 case EMULATE_FAIL:
433 /* XXX Deliver Program interrupt to guest. */
Hollis Blanchard5cf8ca22008-11-05 09:36:19 -0600434 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500435 __func__, vcpu->arch.pc, vcpu->arch.last_inst);
436 /* For debugging, encode the failing instruction and
437 * report it to userspace. */
438 run->hw.hardware_exit_reason = ~0ULL << 32;
439 run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
440 r = RESUME_HOST;
441 break;
442 default:
443 BUG();
444 }
445 break;
446
Christian Ehrhardtde368dc2008-04-29 18:18:23 +0200447 case BOOKE_INTERRUPT_FP_UNAVAIL:
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600448 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600449 kvmppc_account_exit(vcpu, FP_UNAVAIL);
Christian Ehrhardtde368dc2008-04-29 18:18:23 +0200450 r = RESUME_GUEST;
451 break;
452
Scott Wood4cd35f62011-06-14 18:34:31 -0500453#ifdef CONFIG_SPE
454 case BOOKE_INTERRUPT_SPE_UNAVAIL: {
455 if (vcpu->arch.shared->msr & MSR_SPE)
456 kvmppc_vcpu_enable_spe(vcpu);
457 else
458 kvmppc_booke_queue_irqprio(vcpu,
459 BOOKE_IRQPRIO_SPE_UNAVAIL);
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600460 r = RESUME_GUEST;
461 break;
Scott Wood4cd35f62011-06-14 18:34:31 -0500462 }
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600463
464 case BOOKE_INTERRUPT_SPE_FP_DATA:
465 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_DATA);
466 r = RESUME_GUEST;
467 break;
468
469 case BOOKE_INTERRUPT_SPE_FP_ROUND:
470 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_ROUND);
471 r = RESUME_GUEST;
472 break;
Scott Wood4cd35f62011-06-14 18:34:31 -0500473#else
474 case BOOKE_INTERRUPT_SPE_UNAVAIL:
475 /*
476 * Guest wants SPE, but host kernel doesn't support it. Send
477 * an "unimplemented operation" program check to the guest.
478 */
479 kvmppc_core_queue_program(vcpu, ESR_PUO | ESR_SPV);
480 r = RESUME_GUEST;
481 break;
482
483 /*
484 * These really should never happen without CONFIG_SPE,
485 * as we should never enable the real MSR[SPE] in the guest.
486 */
487 case BOOKE_INTERRUPT_SPE_FP_DATA:
488 case BOOKE_INTERRUPT_SPE_FP_ROUND:
489 printk(KERN_CRIT "%s: unexpected SPE interrupt %u at %08lx\n",
490 __func__, exit_nr, vcpu->arch.pc);
491 run->hw.hardware_exit_reason = exit_nr;
492 r = RESUME_HOST;
493 break;
494#endif
Hollis Blanchardbb3a8a12009-01-03 16:23:13 -0600495
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500496 case BOOKE_INTERRUPT_DATA_STORAGE:
Liu Yudaf5e272010-02-02 19:44:35 +0800497 kvmppc_core_queue_data_storage(vcpu, vcpu->arch.fault_dear,
498 vcpu->arch.fault_esr);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600499 kvmppc_account_exit(vcpu, DSI_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500500 r = RESUME_GUEST;
501 break;
502
503 case BOOKE_INTERRUPT_INST_STORAGE:
Liu Yudaf5e272010-02-02 19:44:35 +0800504 kvmppc_core_queue_inst_storage(vcpu, vcpu->arch.fault_esr);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600505 kvmppc_account_exit(vcpu, ISI_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500506 r = RESUME_GUEST;
507 break;
508
509 case BOOKE_INTERRUPT_SYSCALL:
Alexander Graf2a342ed2010-07-29 14:47:48 +0200510 if (!(vcpu->arch.shared->msr & MSR_PR) &&
511 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
512 /* KVM PV hypercalls */
513 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
514 r = RESUME_GUEST;
515 } else {
516 /* Guest syscalls */
517 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
518 }
Hollis Blanchard7b701592008-12-02 15:51:58 -0600519 kvmppc_account_exit(vcpu, SYSCALL_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500520 r = RESUME_GUEST;
521 break;
522
523 case BOOKE_INTERRUPT_DTLB_MISS: {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500524 unsigned long eaddr = vcpu->arch.fault_dear;
Hollis Blanchard7924bd42008-12-02 15:51:55 -0600525 int gtlb_index;
Hollis Blanchard475e7cd2009-01-03 16:23:00 -0600526 gpa_t gpaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500527 gfn_t gfn;
528
Scott Wooda4cd8b22011-06-14 18:34:41 -0500529#ifdef CONFIG_KVM_E500
530 if (!(vcpu->arch.shared->msr & MSR_PR) &&
531 (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
532 kvmppc_map_magic(vcpu);
533 kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
534 r = RESUME_GUEST;
535
536 break;
537 }
538#endif
539
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500540 /* Check the guest TLB. */
Hollis Blanchardfa86b8d2009-01-03 16:23:03 -0600541 gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
Hollis Blanchard7924bd42008-12-02 15:51:55 -0600542 if (gtlb_index < 0) {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500543 /* The guest didn't have a mapping for it. */
Liu Yudaf5e272010-02-02 19:44:35 +0800544 kvmppc_core_queue_dtlb_miss(vcpu,
545 vcpu->arch.fault_dear,
546 vcpu->arch.fault_esr);
Hollis Blanchardb52a6382009-01-03 16:23:11 -0600547 kvmppc_mmu_dtlb_miss(vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600548 kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500549 r = RESUME_GUEST;
550 break;
551 }
552
Hollis Blanchardbe8d1ca2009-01-03 16:23:02 -0600553 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
Hollis Blanchard475e7cd2009-01-03 16:23:00 -0600554 gfn = gpaddr >> PAGE_SHIFT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500555
556 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
557 /* The guest TLB had a mapping, but the shadow TLB
558 * didn't, and it is RAM. This could be because:
559 * a) the entry is mapping the host kernel, or
560 * b) the guest used a large mapping which we're faking
561 * Either way, we need to satisfy the fault without
562 * invoking the guest. */
Hollis Blanchard58a96212009-01-03 16:23:01 -0600563 kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600564 kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500565 r = RESUME_GUEST;
566 } else {
567 /* Guest has mapped and accessed a page which is not
568 * actually RAM. */
Hollis Blanchard475e7cd2009-01-03 16:23:00 -0600569 vcpu->arch.paddr_accessed = gpaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500570 r = kvmppc_emulate_mmio(run, vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600571 kvmppc_account_exit(vcpu, MMIO_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500572 }
573
574 break;
575 }
576
577 case BOOKE_INTERRUPT_ITLB_MISS: {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500578 unsigned long eaddr = vcpu->arch.pc;
Hollis Blanchard89168612008-12-02 15:51:53 -0600579 gpa_t gpaddr;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500580 gfn_t gfn;
Hollis Blanchard7924bd42008-12-02 15:51:55 -0600581 int gtlb_index;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500582
583 r = RESUME_GUEST;
584
585 /* Check the guest TLB. */
Hollis Blanchardfa86b8d2009-01-03 16:23:03 -0600586 gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
Hollis Blanchard7924bd42008-12-02 15:51:55 -0600587 if (gtlb_index < 0) {
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500588 /* The guest didn't have a mapping for it. */
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600589 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
Hollis Blanchardb52a6382009-01-03 16:23:11 -0600590 kvmppc_mmu_itlb_miss(vcpu);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600591 kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500592 break;
593 }
594
Hollis Blanchard7b701592008-12-02 15:51:58 -0600595 kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500596
Hollis Blanchardbe8d1ca2009-01-03 16:23:02 -0600597 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
Hollis Blanchard89168612008-12-02 15:51:53 -0600598 gfn = gpaddr >> PAGE_SHIFT;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500599
600 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
601 /* The guest TLB had a mapping, but the shadow TLB
602 * didn't. This could be because:
603 * a) the entry is mapping the host kernel, or
604 * b) the guest used a large mapping which we're faking
605 * Either way, we need to satisfy the fault without
606 * invoking the guest. */
Hollis Blanchard58a96212009-01-03 16:23:01 -0600607 kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500608 } else {
609 /* Guest mapped and leaped at non-RAM! */
Hollis Blanchardd4cf3892008-11-05 09:36:23 -0600610 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500611 }
612
613 break;
614 }
615
Hollis Blanchard6a0ab732008-07-25 13:54:49 -0500616 case BOOKE_INTERRUPT_DEBUG: {
617 u32 dbsr;
618
619 vcpu->arch.pc = mfspr(SPRN_CSRR0);
620
621 /* clear IAC events in DBSR register */
622 dbsr = mfspr(SPRN_DBSR);
623 dbsr &= DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4;
624 mtspr(SPRN_DBSR, dbsr);
625
626 run->exit_reason = KVM_EXIT_DEBUG;
Hollis Blanchard7b701592008-12-02 15:51:58 -0600627 kvmppc_account_exit(vcpu, DEBUG_EXITS);
Hollis Blanchard6a0ab732008-07-25 13:54:49 -0500628 r = RESUME_HOST;
629 break;
630 }
631
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500632 default:
633 printk(KERN_EMERG "exit_nr %d\n", exit_nr);
634 BUG();
635 }
636
637 local_irq_disable();
638
Scott Wood7e28e60e2011-11-08 18:23:20 -0600639 kvmppc_core_prepare_to_enter(vcpu);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500640
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500641 if (!(r & RESUME_HOST)) {
642 /* To avoid clobbering exit_reason, only check for signals if
643 * we aren't already exiting to userspace for some other
644 * reason. */
645 if (signal_pending(current)) {
646 run->exit_reason = KVM_EXIT_INTR;
647 r = (-EINTR << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600648 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500649 }
650 }
651
652 return r;
653}
654
655/* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
656int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
657{
Hollis Blanchard082decf2010-08-07 10:33:56 -0700658 int i;
Alexander Grafaf8f38b2011-08-10 13:57:08 +0200659 int r;
Hollis Blanchard082decf2010-08-07 10:33:56 -0700660
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500661 vcpu->arch.pc = 0;
Alexander Graf666e7252010-07-29 14:47:43 +0200662 vcpu->arch.shared->msr = 0;
Scott Woodecee2732011-06-14 18:34:29 -0500663 vcpu->arch.shadow_msr = MSR_USER | MSR_DE | MSR_IS | MSR_DS;
Scott Woodb5904972011-11-08 18:23:30 -0600664 vcpu->arch.shared->pir = vcpu->vcpu_id;
Alexander Graf8e5b26b2010-01-08 02:58:01 +0100665 kvmppc_set_gpr(vcpu, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500666
Hollis Blanchard49dd2c42008-07-25 13:54:53 -0500667 vcpu->arch.shadow_pid = 1;
668
Hollis Blanchard082decf2010-08-07 10:33:56 -0700669 /* Eye-catching numbers so we know if the guest takes an interrupt
670 * before it's programmed its own IVPR/IVORs. */
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500671 vcpu->arch.ivpr = 0x55550000;
Hollis Blanchard082decf2010-08-07 10:33:56 -0700672 for (i = 0; i < BOOKE_IRQPRIO_MAX; i++)
673 vcpu->arch.ivor[i] = 0x7700 | i * 4;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500674
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600675 kvmppc_init_timing_stats(vcpu);
676
Alexander Grafaf8f38b2011-08-10 13:57:08 +0200677 r = kvmppc_core_vcpu_setup(vcpu);
678 kvmppc_sanity_check(vcpu);
679 return r;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500680}
681
682int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
683{
684 int i;
685
686 regs->pc = vcpu->arch.pc;
Alexander Graf992b5b22010-01-08 02:58:02 +0100687 regs->cr = kvmppc_get_cr(vcpu);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500688 regs->ctr = vcpu->arch.ctr;
689 regs->lr = vcpu->arch.lr;
Alexander Graf992b5b22010-01-08 02:58:02 +0100690 regs->xer = kvmppc_get_xer(vcpu);
Alexander Graf666e7252010-07-29 14:47:43 +0200691 regs->msr = vcpu->arch.shared->msr;
Alexander Grafde7906c2010-07-29 14:47:46 +0200692 regs->srr0 = vcpu->arch.shared->srr0;
693 regs->srr1 = vcpu->arch.shared->srr1;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500694 regs->pid = vcpu->arch.pid;
Alexander Grafa73a9592010-07-29 14:47:47 +0200695 regs->sprg0 = vcpu->arch.shared->sprg0;
696 regs->sprg1 = vcpu->arch.shared->sprg1;
697 regs->sprg2 = vcpu->arch.shared->sprg2;
698 regs->sprg3 = vcpu->arch.shared->sprg3;
Scott Woodb5904972011-11-08 18:23:30 -0600699 regs->sprg4 = vcpu->arch.shared->sprg4;
700 regs->sprg5 = vcpu->arch.shared->sprg5;
701 regs->sprg6 = vcpu->arch.shared->sprg6;
702 regs->sprg7 = vcpu->arch.shared->sprg7;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500703
704 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
Alexander Graf8e5b26b2010-01-08 02:58:01 +0100705 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500706
707 return 0;
708}
709
710int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
711{
712 int i;
713
714 vcpu->arch.pc = regs->pc;
Alexander Graf992b5b22010-01-08 02:58:02 +0100715 kvmppc_set_cr(vcpu, regs->cr);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500716 vcpu->arch.ctr = regs->ctr;
717 vcpu->arch.lr = regs->lr;
Alexander Graf992b5b22010-01-08 02:58:02 +0100718 kvmppc_set_xer(vcpu, regs->xer);
Hollis Blanchardb8fd68a2008-11-05 09:36:20 -0600719 kvmppc_set_msr(vcpu, regs->msr);
Alexander Grafde7906c2010-07-29 14:47:46 +0200720 vcpu->arch.shared->srr0 = regs->srr0;
721 vcpu->arch.shared->srr1 = regs->srr1;
Scott Wood5ce941e2011-04-27 17:24:21 -0500722 kvmppc_set_pid(vcpu, regs->pid);
Alexander Grafa73a9592010-07-29 14:47:47 +0200723 vcpu->arch.shared->sprg0 = regs->sprg0;
724 vcpu->arch.shared->sprg1 = regs->sprg1;
725 vcpu->arch.shared->sprg2 = regs->sprg2;
726 vcpu->arch.shared->sprg3 = regs->sprg3;
Scott Woodb5904972011-11-08 18:23:30 -0600727 vcpu->arch.shared->sprg4 = regs->sprg4;
728 vcpu->arch.shared->sprg5 = regs->sprg5;
729 vcpu->arch.shared->sprg6 = regs->sprg6;
730 vcpu->arch.shared->sprg7 = regs->sprg7;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500731
Alexander Graf8e5b26b2010-01-08 02:58:01 +0100732 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
733 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500734
735 return 0;
736}
737
Scott Wood5ce941e2011-04-27 17:24:21 -0500738static void get_sregs_base(struct kvm_vcpu *vcpu,
739 struct kvm_sregs *sregs)
740{
741 u64 tb = get_tb();
742
743 sregs->u.e.features |= KVM_SREGS_E_BASE;
744
745 sregs->u.e.csrr0 = vcpu->arch.csrr0;
746 sregs->u.e.csrr1 = vcpu->arch.csrr1;
747 sregs->u.e.mcsr = vcpu->arch.mcsr;
Scott Woodb5904972011-11-08 18:23:30 -0600748 sregs->u.e.esr = vcpu->arch.shared->esr;
Scott Wood5ce941e2011-04-27 17:24:21 -0500749 sregs->u.e.dear = vcpu->arch.shared->dar;
750 sregs->u.e.tsr = vcpu->arch.tsr;
751 sregs->u.e.tcr = vcpu->arch.tcr;
752 sregs->u.e.dec = kvmppc_get_dec(vcpu, tb);
753 sregs->u.e.tb = tb;
754 sregs->u.e.vrsave = vcpu->arch.vrsave;
755}
756
757static int set_sregs_base(struct kvm_vcpu *vcpu,
758 struct kvm_sregs *sregs)
759{
760 if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
761 return 0;
762
763 vcpu->arch.csrr0 = sregs->u.e.csrr0;
764 vcpu->arch.csrr1 = sregs->u.e.csrr1;
765 vcpu->arch.mcsr = sregs->u.e.mcsr;
Scott Woodb5904972011-11-08 18:23:30 -0600766 vcpu->arch.shared->esr = sregs->u.e.esr;
Scott Wood5ce941e2011-04-27 17:24:21 -0500767 vcpu->arch.shared->dar = sregs->u.e.dear;
768 vcpu->arch.vrsave = sregs->u.e.vrsave;
Scott Wooddfd4d472011-11-17 12:39:59 +0000769 kvmppc_set_tcr(vcpu, sregs->u.e.tcr);
Scott Wood5ce941e2011-04-27 17:24:21 -0500770
Scott Wooddfd4d472011-11-17 12:39:59 +0000771 if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC) {
Scott Wood5ce941e2011-04-27 17:24:21 -0500772 vcpu->arch.dec = sregs->u.e.dec;
Scott Wooddfd4d472011-11-17 12:39:59 +0000773 kvmppc_emulate_dec(vcpu);
774 }
Scott Wood5ce941e2011-04-27 17:24:21 -0500775
776 if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR) {
Scott Wooddfd4d472011-11-17 12:39:59 +0000777 vcpu->arch.tsr = sregs->u.e.tsr;
778 update_timer_ints(vcpu);
Scott Wood5ce941e2011-04-27 17:24:21 -0500779 }
780
781 return 0;
782}
783
784static void get_sregs_arch206(struct kvm_vcpu *vcpu,
785 struct kvm_sregs *sregs)
786{
787 sregs->u.e.features |= KVM_SREGS_E_ARCH206;
788
Scott Wood841741f2011-09-02 17:39:37 -0500789 sregs->u.e.pir = vcpu->vcpu_id;
Scott Wood5ce941e2011-04-27 17:24:21 -0500790 sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0;
791 sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1;
792 sregs->u.e.decar = vcpu->arch.decar;
793 sregs->u.e.ivpr = vcpu->arch.ivpr;
794}
795
796static int set_sregs_arch206(struct kvm_vcpu *vcpu,
797 struct kvm_sregs *sregs)
798{
799 if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206))
800 return 0;
801
Scott Wood841741f2011-09-02 17:39:37 -0500802 if (sregs->u.e.pir != vcpu->vcpu_id)
Scott Wood5ce941e2011-04-27 17:24:21 -0500803 return -EINVAL;
804
805 vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0;
806 vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1;
807 vcpu->arch.decar = sregs->u.e.decar;
808 vcpu->arch.ivpr = sregs->u.e.ivpr;
809
810 return 0;
811}
812
813void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
814{
815 sregs->u.e.features |= KVM_SREGS_E_IVOR;
816
817 sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
818 sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
819 sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
820 sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
821 sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
822 sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
823 sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
824 sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
825 sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
826 sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
827 sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
828 sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
829 sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
830 sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
831 sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
832 sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
833}
834
835int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
836{
837 if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
838 return 0;
839
840 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0];
841 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1];
842 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2];
843 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3];
844 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4];
845 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5];
846 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6];
847 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7];
848 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8];
849 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9];
850 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10];
851 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11];
852 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12];
853 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13];
854 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14];
855 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15];
856
857 return 0;
858}
859
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500860int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
861 struct kvm_sregs *sregs)
862{
Scott Wood5ce941e2011-04-27 17:24:21 -0500863 sregs->pvr = vcpu->arch.pvr;
864
865 get_sregs_base(vcpu, sregs);
866 get_sregs_arch206(vcpu, sregs);
867 kvmppc_core_get_sregs(vcpu, sregs);
868 return 0;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500869}
870
871int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
872 struct kvm_sregs *sregs)
873{
Scott Wood5ce941e2011-04-27 17:24:21 -0500874 int ret;
875
876 if (vcpu->arch.pvr != sregs->pvr)
877 return -EINVAL;
878
879 ret = set_sregs_base(vcpu, sregs);
880 if (ret < 0)
881 return ret;
882
883 ret = set_sregs_arch206(vcpu, sregs);
884 if (ret < 0)
885 return ret;
886
887 return kvmppc_core_set_sregs(vcpu, sregs);
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500888}
889
Paul Mackerras31f34382011-12-12 12:26:50 +0000890int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
891{
892 return -EINVAL;
893}
894
895int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
896{
897 return -EINVAL;
898}
899
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500900int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
901{
902 return -ENOTSUPP;
903}
904
905int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
906{
907 return -ENOTSUPP;
908}
909
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500910int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
911 struct kvm_translation *tr)
912{
Avi Kivity98001d82010-05-13 11:05:49 +0300913 int r;
914
Avi Kivity98001d82010-05-13 11:05:49 +0300915 r = kvmppc_core_vcpu_translate(vcpu, tr);
Avi Kivity98001d82010-05-13 11:05:49 +0300916 return r;
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500917}
Hollis Blanchardd9fbd032008-11-05 09:36:13 -0600918
Alexander Graf4e755752009-10-30 05:47:01 +0000919int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
920{
921 return -ENOTSUPP;
922}
923
Paul Mackerrasf9e05542011-06-29 00:19:22 +0000924int kvmppc_core_prepare_memory_region(struct kvm *kvm,
925 struct kvm_userspace_memory_region *mem)
926{
927 return 0;
928}
929
930void kvmppc_core_commit_memory_region(struct kvm *kvm,
931 struct kvm_userspace_memory_region *mem)
932{
933}
934
935int kvmppc_core_init_vm(struct kvm *kvm)
936{
937 return 0;
938}
939
940void kvmppc_core_destroy_vm(struct kvm *kvm)
941{
942}
943
Scott Wooddfd4d472011-11-17 12:39:59 +0000944void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr)
945{
946 vcpu->arch.tcr = new_tcr;
947 update_timer_ints(vcpu);
948}
949
950void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
951{
952 set_bits(tsr_bits, &vcpu->arch.tsr);
953 smp_wmb();
954 kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
955 kvm_vcpu_kick(vcpu);
956}
957
958void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
959{
960 clear_bits(tsr_bits, &vcpu->arch.tsr);
961 update_timer_ints(vcpu);
962}
963
964void kvmppc_decrementer_func(unsigned long data)
965{
966 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
967
968 kvmppc_set_tsr_bits(vcpu, TSR_DIS);
969}
970
Scott Wood94fa9d92011-12-20 15:34:22 +0000971void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
972{
973}
974
975void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu)
976{
977}
978
Stephen Rothwell2986b8c2009-06-02 11:46:14 +1000979int __init kvmppc_booke_init(void)
Hollis Blanchardd9fbd032008-11-05 09:36:13 -0600980{
981 unsigned long ivor[16];
982 unsigned long max_ivor = 0;
983 int i;
984
985 /* We install our own exception handlers by hijacking IVPR. IVPR must
986 * be 16-bit aligned, so we need a 64KB allocation. */
987 kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
988 VCPU_SIZE_ORDER);
989 if (!kvmppc_booke_handlers)
990 return -ENOMEM;
991
992 /* XXX make sure our handlers are smaller than Linux's */
993
994 /* Copy our interrupt handlers to match host IVORs. That way we don't
995 * have to swap the IVORs on every guest/host transition. */
996 ivor[0] = mfspr(SPRN_IVOR0);
997 ivor[1] = mfspr(SPRN_IVOR1);
998 ivor[2] = mfspr(SPRN_IVOR2);
999 ivor[3] = mfspr(SPRN_IVOR3);
1000 ivor[4] = mfspr(SPRN_IVOR4);
1001 ivor[5] = mfspr(SPRN_IVOR5);
1002 ivor[6] = mfspr(SPRN_IVOR6);
1003 ivor[7] = mfspr(SPRN_IVOR7);
1004 ivor[8] = mfspr(SPRN_IVOR8);
1005 ivor[9] = mfspr(SPRN_IVOR9);
1006 ivor[10] = mfspr(SPRN_IVOR10);
1007 ivor[11] = mfspr(SPRN_IVOR11);
1008 ivor[12] = mfspr(SPRN_IVOR12);
1009 ivor[13] = mfspr(SPRN_IVOR13);
1010 ivor[14] = mfspr(SPRN_IVOR14);
1011 ivor[15] = mfspr(SPRN_IVOR15);
1012
1013 for (i = 0; i < 16; i++) {
1014 if (ivor[i] > max_ivor)
1015 max_ivor = ivor[i];
1016
1017 memcpy((void *)kvmppc_booke_handlers + ivor[i],
1018 kvmppc_handlers_start + i * kvmppc_handler_len,
1019 kvmppc_handler_len);
1020 }
1021 flush_icache_range(kvmppc_booke_handlers,
1022 kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
1023
Hollis Blancharddb93f572008-11-05 09:36:18 -06001024 return 0;
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001025}
1026
Hollis Blancharddb93f572008-11-05 09:36:18 -06001027void __exit kvmppc_booke_exit(void)
Hollis Blanchardd9fbd032008-11-05 09:36:13 -06001028{
1029 free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
1030 kvm_exit();
1031}