[mirror_ubuntu-artful-kernel.git] / arch / powerpc / kvm / powerpc.c

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright IBM Corp. 2007
 *
 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
 *          Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
 */

#include <linux/errno.h>
#include <linux/err.h>
#include <linux/kvm_host.h>
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/fs.h>
#include <asm/cputable.h>
#include <asm/uaccess.h>
#include <asm/kvm_ppc.h>
#include <asm/tlbflush.h>
#include "timing.h"
#include "../mm/mmu_decl.h"

gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
{
	return gfn;
}

int kvm_cpu_has_interrupt(struct kvm_vcpu *v)
{
	return !!(v->arch.pending_exceptions);
}

int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
{
	/* do real check here */
	return 1;
}

int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
{
	return !(v->arch.msr & MSR_WE);
}


int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
	enum emulation_result er;
	int r;

	er = kvmppc_emulate_instruction(run, vcpu);
	switch (er) {
	case EMULATE_DONE:
		/* Future optimization: only reload non-volatiles if they were
		 * actually modified. */
		r = RESUME_GUEST_NV;
		break;
	case EMULATE_DO_MMIO:
		run->exit_reason = KVM_EXIT_MMIO;
		/* We must reload nonvolatiles because "update" load/store
		 * instructions modify register state. */
		/* Future optimization: only reload non-volatiles if they were
		 * actually modified. */
		r = RESUME_HOST_NV;
		break;
	case EMULATE_FAIL:
		/* XXX Deliver Program interrupt to guest. */
		printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
		       vcpu->arch.last_inst);
		r = RESUME_HOST;
		break;
	default:
		BUG();
	}

	return r;
}

void kvm_arch_hardware_enable(void *garbage)
{
}

void kvm_arch_hardware_disable(void *garbage)
{
}

int kvm_arch_hardware_setup(void)
{
	return 0;
}

void kvm_arch_hardware_unsetup(void)
{
}

void kvm_arch_check_processor_compat(void *rtn)
{
	*(int *)rtn = kvmppc_core_check_processor_compat();
}

struct kvm *kvm_arch_create_vm(void)
{
	struct kvm *kvm;

	kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
	if (!kvm)
		return ERR_PTR(-ENOMEM);

	return kvm;
}

static void kvmppc_free_vcpus(struct kvm *kvm)
{
	unsigned int i;
	struct kvm_vcpu *vcpu;

	kvm_for_each_vcpu(i, vcpu, kvm)
		kvm_arch_vcpu_free(vcpu);

	mutex_lock(&kvm->lock);
	for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
		kvm->vcpus[i] = NULL;

	atomic_set(&kvm->online_vcpus, 0);
	mutex_unlock(&kvm->lock);
}

void kvm_arch_sync_events(struct kvm *kvm)
{
}

void kvm_arch_destroy_vm(struct kvm *kvm)
{
	kvmppc_free_vcpus(kvm);
	kvm_free_physmem(kvm);
	kfree(kvm);
}

int kvm_dev_ioctl_check_extension(long ext)
{
	int r;

	switch (ext) {
	case KVM_CAP_COALESCED_MMIO:
		r = KVM_COALESCED_MMIO_PAGE_OFFSET;
		break;
	default:
		r = 0;
		break;
	}
	return r;

}

long kvm_arch_dev_ioctl(struct file *filp,
                        unsigned int ioctl, unsigned long arg)
{
	return -EINVAL;
}

int kvm_arch_set_memory_region(struct kvm *kvm,
                               struct kvm_userspace_memory_region *mem,
                               struct kvm_memory_slot old,
                               int user_alloc)
{
	return 0;
}

void kvm_arch_flush_shadow(struct kvm *kvm)
{
}

struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
{
	struct kvm_vcpu *vcpu;
	vcpu = kvmppc_core_vcpu_create(kvm, id);
	kvmppc_create_vcpu_debugfs(vcpu, id);
	return vcpu;
}

void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
{
	kvmppc_remove_vcpu_debugfs(vcpu);
	kvmppc_core_vcpu_free(vcpu);
}

void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
	kvm_arch_vcpu_free(vcpu);
}

int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
{
	return kvmppc_core_pending_dec(vcpu);
}

static void kvmppc_decrementer_func(unsigned long data)
{
	struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;

	kvmppc_core_queue_dec(vcpu);

	if (waitqueue_active(&vcpu->wq)) {
		wake_up_interruptible(&vcpu->wq);
		vcpu->stat.halt_wakeup++;
	}
}

int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
{
	setup_timer(&vcpu->arch.dec_timer, kvmppc_decrementer_func,
	            (unsigned long)vcpu);

	return 0;
}

void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
{
	kvmppc_mmu_destroy(vcpu);
}

void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
	kvmppc_core_vcpu_load(vcpu, cpu);
}

void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
{
	kvmppc_core_vcpu_put(vcpu);
}

int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
                                        struct kvm_guest_debug *dbg)
{
	return -EINVAL;
}

static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
                                     struct kvm_run *run)
{
	ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr];
	*gpr = run->dcr.data;
}

static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
                                      struct kvm_run *run)
{
	ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr];

	if (run->mmio.len > sizeof(*gpr)) {
		printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
		return;
	}

	if (vcpu->arch.mmio_is_bigendian) {
		switch (run->mmio.len) {
		case 4: *gpr = *(u32 *)run->mmio.data; break;
		case 2: *gpr = *(u16 *)run->mmio.data; break;
		case 1: *gpr = *(u8 *)run->mmio.data; break;
		}
	} else {
		/* Convert BE data from userland back to LE. */
		switch (run->mmio.len) {
		case 4: *gpr = ld_le32((u32 *)run->mmio.data); break;
		case 2: *gpr = ld_le16((u16 *)run->mmio.data); break;
		case 1: *gpr = *(u8 *)run->mmio.data; break;
		}
	}
}

int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
                       unsigned int rt, unsigned int bytes, int is_bigendian)
{
	if (bytes > sizeof(run->mmio.data)) {
		printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
		       run->mmio.len);
	}

	run->mmio.phys_addr = vcpu->arch.paddr_accessed;
	run->mmio.len = bytes;
	run->mmio.is_write = 0;

	vcpu->arch.io_gpr = rt;
	vcpu->arch.mmio_is_bigendian = is_bigendian;
	vcpu->mmio_needed = 1;
	vcpu->mmio_is_write = 0;

	return EMULATE_DO_MMIO;
}

int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
                        u32 val, unsigned int bytes, int is_bigendian)
{
	void *data = run->mmio.data;

	if (bytes > sizeof(run->mmio.data)) {
		printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
		       run->mmio.len);
	}

	run->mmio.phys_addr = vcpu->arch.paddr_accessed;
	run->mmio.len = bytes;
	run->mmio.is_write = 1;
	vcpu->mmio_needed = 1;
	vcpu->mmio_is_write = 1;

	/* Store the value at the lowest bytes in 'data'. */
	if (is_bigendian) {
		switch (bytes) {
		case 4: *(u32 *)data = val; break;
		case 2: *(u16 *)data = val; break;
		case 1: *(u8  *)data = val; break;
		}
	} else {
		/* Store LE value into 'data'. */
		switch (bytes) {
		case 4: st_le32(data, val); break;
		case 2: st_le16(data, val); break;
		case 1: *(u8 *)data = val; break;
		}
	}

	return EMULATE_DO_MMIO;
}

int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
{
	int r;
	sigset_t sigsaved;

	vcpu_load(vcpu);

	if (vcpu->sigset_active)
		sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);

	if (vcpu->mmio_needed) {
		if (!vcpu->mmio_is_write)
			kvmppc_complete_mmio_load(vcpu, run);
		vcpu->mmio_needed = 0;
	} else if (vcpu->arch.dcr_needed) {
		if (!vcpu->arch.dcr_is_write)
			kvmppc_complete_dcr_load(vcpu, run);
		vcpu->arch.dcr_needed = 0;
	}

	kvmppc_core_deliver_interrupts(vcpu);

	local_irq_disable();
	kvm_guest_enter();
	r = __kvmppc_vcpu_run(run, vcpu);
	kvm_guest_exit();
	local_irq_enable();

	if (vcpu->sigset_active)
		sigprocmask(SIG_SETMASK, &sigsaved, NULL);

	vcpu_put(vcpu);

	return r;
}

int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
{
	kvmppc_core_queue_external(vcpu, irq);

	if (waitqueue_active(&vcpu->wq)) {
		wake_up_interruptible(&vcpu->wq);
		vcpu->stat.halt_wakeup++;
	}

	return 0;
}

int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
                                    struct kvm_mp_state *mp_state)
{
	return -EINVAL;
}

int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
                                    struct kvm_mp_state *mp_state)
{
	return -EINVAL;
}

long kvm_arch_vcpu_ioctl(struct file *filp,
                         unsigned int ioctl, unsigned long arg)
{
	struct kvm_vcpu *vcpu = filp->private_data;
	void __user *argp = (void __user *)arg;
	long r;

	switch (ioctl) {
	case KVM_INTERRUPT: {
		struct kvm_interrupt irq;
		r = -EFAULT;
		if (copy_from_user(&irq, argp, sizeof(irq)))
			goto out;
		r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
		break;
	}
	default:
		r = -EINVAL;
	}

out:
	return r;
}

int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
{
	return -ENOTSUPP;
}

long kvm_arch_vm_ioctl(struct file *filp,
                       unsigned int ioctl, unsigned long arg)
{
	long r;

	switch (ioctl) {
	default:
		r = -EINVAL;
	}

	return r;
}

int kvm_arch_init(void *opaque)
{
	return 0;
}

void kvm_arch_exit(void)
{
}
Commit	Line	Data
bbf45ba5 HB	1	/*
	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
	16	*
	17	* Authors: Hollis Blanchard <hollisb@us.ibm.com>
	18	* Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
	19	*/
	20
	21	#include <linux/errno.h>
	22	#include <linux/err.h>
	23	#include <linux/kvm_host.h>
	24	#include <linux/module.h>
	25	#include <linux/vmalloc.h>
	26	#include <linux/fs.h>
	27	#include <asm/cputable.h>
	28	#include <asm/uaccess.h>
	29	#include <asm/kvm_ppc.h>
83aae4a8	30	#include <asm/tlbflush.h>
73e75b41	31	#include "timing.h"
fad7b9b5	32	#include "../mm/mmu_decl.h"
bbf45ba5	33
bbf45ba5 HB	34	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
	35	{
	36	return gfn;
	37	}
	38
	39	int kvm_cpu_has_interrupt(struct kvm_vcpu *v)
	40	{
45c5eb67	41	return !!(v->arch.pending_exceptions);
bbf45ba5 HB	42	}
bbf45ba5 HB	43
78646121 GN	44	int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
	45	{
	46	/* do real check here */
	47	return 1;
	48	}
	49
bbf45ba5 HB	50	int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
bbf45ba5 HB	51	{
45c5eb67	52	return !(v->arch.msr & MSR_WE);
bbf45ba5 HB	53	}
	54
	55
	56	int kvmppc_emulate_mmio(struct kvm_run run, struct kvm_vcpu vcpu)
	57	{
	58	enum emulation_result er;
	59	int r;
	60
	61	er = kvmppc_emulate_instruction(run, vcpu);
	62	switch (er) {
	63	case EMULATE_DONE:
	64	/* Future optimization: only reload non-volatiles if they were
	65	* actually modified. */
	66	r = RESUME_GUEST_NV;
	67	break;
	68	case EMULATE_DO_MMIO:
	69	run->exit_reason = KVM_EXIT_MMIO;
	70	/* We must reload nonvolatiles because "update" load/store
	71	* instructions modify register state. */
	72	/* Future optimization: only reload non-volatiles if they were
	73	* actually modified. */
	74	r = RESUME_HOST_NV;
	75	break;
	76	case EMULATE_FAIL:
	77	/* XXX Deliver Program interrupt to guest. */
	78	printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
	79	vcpu->arch.last_inst);
	80	r = RESUME_HOST;
	81	break;
	82	default:
	83	BUG();
	84	}
	85
	86	return r;
	87	}
	88
	89	void kvm_arch_hardware_enable(void *garbage)
	90	{
	91	}
	92
	93	void kvm_arch_hardware_disable(void *garbage)
	94	{
	95	}
	96
	97	int kvm_arch_hardware_setup(void)
	98	{
	99	return 0;
	100	}
	101
	102	void kvm_arch_hardware_unsetup(void)
	103	{
	104	}
	105
	106	void kvm_arch_check_processor_compat(void *rtn)
	107	{
9dd921cf	108	(int )rtn = kvmppc_core_check_processor_compat();
bbf45ba5 HB	109	}
	110
	111	struct kvm *kvm_arch_create_vm(void)
	112	{
	113	struct kvm *kvm;
	114
	115	kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
	116	if (!kvm)
	117	return ERR_PTR(-ENOMEM);
	118
	119	return kvm;
	120	}
	121
	122	static void kvmppc_free_vcpus(struct kvm *kvm)
	123	{
	124	unsigned int i;
988a2cae	125	struct kvm_vcpu *vcpu;
bbf45ba5	126
988a2cae GN	127	kvm_for_each_vcpu(i, vcpu, kvm)
	128	kvm_arch_vcpu_free(vcpu);
	129
	130	mutex_lock(&kvm->lock);
	131	for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
	132	kvm->vcpus[i] = NULL;
	133
	134	atomic_set(&kvm->online_vcpus, 0);
	135	mutex_unlock(&kvm->lock);
bbf45ba5 HB	136	}
bbf45ba5 HB	137
ad8ba2cd SY	138	void kvm_arch_sync_events(struct kvm *kvm)
	139	{
	140	}
	141
bbf45ba5 HB	142	void kvm_arch_destroy_vm(struct kvm *kvm)
	143	{
	144	kvmppc_free_vcpus(kvm);
	145	kvm_free_physmem(kvm);
	146	kfree(kvm);
	147	}
	148
	149	int kvm_dev_ioctl_check_extension(long ext)
	150	{
	151	int r;
	152
	153	switch (ext) {
588968b6 LV	154	case KVM_CAP_COALESCED_MMIO:
	155	r = KVM_COALESCED_MMIO_PAGE_OFFSET;
	156	break;
bbf45ba5 HB	157	default:
	158	r = 0;
	159	break;
	160	}
	161	return r;
	162
	163	}
	164
	165	long kvm_arch_dev_ioctl(struct file *filp,
	166	unsigned int ioctl, unsigned long arg)
	167	{
	168	return -EINVAL;
	169	}
	170
	171	int kvm_arch_set_memory_region(struct kvm *kvm,
	172	struct kvm_userspace_memory_region *mem,
	173	struct kvm_memory_slot old,
	174	int user_alloc)
	175	{
	176	return 0;
	177	}
	178
34d4cb8f MT	179	void kvm_arch_flush_shadow(struct kvm *kvm)
	180	{
	181	}
	182
bbf45ba5 HB	183	struct kvm_vcpu kvm_arch_vcpu_create(struct kvm kvm, unsigned int id)
bbf45ba5 HB	184	{
73e75b41 HB	185	struct kvm_vcpu *vcpu;
	186	vcpu = kvmppc_core_vcpu_create(kvm, id);
	187	kvmppc_create_vcpu_debugfs(vcpu, id);
	188	return vcpu;
bbf45ba5 HB	189	}
	190
	191	void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
	192	{
73e75b41	193	kvmppc_remove_vcpu_debugfs(vcpu);
db93f574	194	kvmppc_core_vcpu_free(vcpu);
bbf45ba5 HB	195	}
	196
	197	void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
	198	{
	199	kvm_arch_vcpu_free(vcpu);
	200	}
	201
	202	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
	203	{
9dd921cf	204	return kvmppc_core_pending_dec(vcpu);
bbf45ba5 HB	205	}
	206
	207	static void kvmppc_decrementer_func(unsigned long data)
	208	{
	209	struct kvm_vcpu vcpu = (struct kvm_vcpu )data;
	210
9dd921cf	211	kvmppc_core_queue_dec(vcpu);
45c5eb67 HB	212
	213	if (waitqueue_active(&vcpu->wq)) {
	214	wake_up_interruptible(&vcpu->wq);
	215	vcpu->stat.halt_wakeup++;
	216	}
bbf45ba5 HB	217	}
	218
	219	int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
	220	{
	221	setup_timer(&vcpu->arch.dec_timer, kvmppc_decrementer_func,
	222	(unsigned long)vcpu);
	223
	224	return 0;
	225	}
	226
	227	void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
	228	{
ecc0981f	229	kvmppc_mmu_destroy(vcpu);
bbf45ba5 HB	230	}
	231
	232	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
	233	{
9dd921cf	234	kvmppc_core_vcpu_load(vcpu, cpu);
bbf45ba5 HB	235	}
	236
	237	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
	238	{
9dd921cf	239	kvmppc_core_vcpu_put(vcpu);
bbf45ba5 HB	240	}
bbf45ba5 HB	241
d0bfb940	242	int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
f5d0906b	243	struct kvm_guest_debug *dbg)
bbf45ba5	244	{
f5d0906b	245	return -EINVAL;
bbf45ba5 HB	246	}
	247
	248	static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
	249	struct kvm_run *run)
	250	{
5cf8ca22	251	ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr];
bbf45ba5 HB	252	*gpr = run->dcr.data;
	253	}
	254
	255	static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
	256	struct kvm_run *run)
	257	{
5cf8ca22	258	ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr];
bbf45ba5 HB	259
	260	if (run->mmio.len > sizeof(*gpr)) {
	261	printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
	262	return;
	263	}
	264
	265	if (vcpu->arch.mmio_is_bigendian) {
	266	switch (run->mmio.len) {
	267	case 4: gpr = (u32 *)run->mmio.data; break;
	268	case 2: gpr = (u16 *)run->mmio.data; break;
	269	case 1: gpr = (u8 *)run->mmio.data; break;
	270	}
	271	} else {
	272	/* Convert BE data from userland back to LE. */
	273	switch (run->mmio.len) {
	274	case 4: gpr = ld_le32((u32 )run->mmio.data); break;
	275	case 2: gpr = ld_le16((u16 )run->mmio.data); break;
	276	case 1: gpr = (u8 *)run->mmio.data; break;
	277	}
	278	}
	279	}
	280
	281	int kvmppc_handle_load(struct kvm_run run, struct kvm_vcpu vcpu,
	282	unsigned int rt, unsigned int bytes, int is_bigendian)
	283	{
	284	if (bytes > sizeof(run->mmio.data)) {
	285	printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
	286	run->mmio.len);
	287	}
	288
	289	run->mmio.phys_addr = vcpu->arch.paddr_accessed;
	290	run->mmio.len = bytes;
	291	run->mmio.is_write = 0;
	292
	293	vcpu->arch.io_gpr = rt;
	294	vcpu->arch.mmio_is_bigendian = is_bigendian;
	295	vcpu->mmio_needed = 1;
	296	vcpu->mmio_is_write = 0;
	297
	298	return EMULATE_DO_MMIO;
	299	}
	300
	301	int kvmppc_handle_store(struct kvm_run run, struct kvm_vcpu vcpu,
	302	u32 val, unsigned int bytes, int is_bigendian)
	303	{
	304	void *data = run->mmio.data;
	305
	306	if (bytes > sizeof(run->mmio.data)) {
	307	printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
	308	run->mmio.len);
	309	}
	310
	311	run->mmio.phys_addr = vcpu->arch.paddr_accessed;
	312	run->mmio.len = bytes;
	313	run->mmio.is_write = 1;
	314	vcpu->mmio_needed = 1;
	315	vcpu->mmio_is_write = 1;
	316
	317	/* Store the value at the lowest bytes in 'data'. */
	318	if (is_bigendian) {
	319	switch (bytes) {
	320	case 4: (u32 )data = val; break;
	321	case 2: (u16 )data = val; break;
	322	case 1: (u8 )data = val; break;
323	}
324	} else {
325	/* Store LE value into 'data'. */
326	switch (bytes) {
327	case 4: st_le32(data, val); break;
328	case 2: st_le16(data, val); break;
329	case 1: (u8 )data = val; break;
330	}
331	}
332
333	return EMULATE_DO_MMIO;
334	}
335
336	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run run)
337	{
338	int r;
339	sigset_t sigsaved;
340
45c5eb67 HB	341	vcpu_load(vcpu);
45c5eb67 HB	342
bbf45ba5 HB	343	if (vcpu->sigset_active)
	344	sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
	345
	346	if (vcpu->mmio_needed) {
	347	if (!vcpu->mmio_is_write)
	348	kvmppc_complete_mmio_load(vcpu, run);
	349	vcpu->mmio_needed = 0;
	350	} else if (vcpu->arch.dcr_needed) {
	351	if (!vcpu->arch.dcr_is_write)
	352	kvmppc_complete_dcr_load(vcpu, run);
	353	vcpu->arch.dcr_needed = 0;
	354	}
	355
9dd921cf	356	kvmppc_core_deliver_interrupts(vcpu);
bbf45ba5 HB	357
	358	local_irq_disable();
	359	kvm_guest_enter();
	360	r = __kvmppc_vcpu_run(run, vcpu);
	361	kvm_guest_exit();
	362	local_irq_enable();
	363
	364	if (vcpu->sigset_active)
	365	sigprocmask(SIG_SETMASK, &sigsaved, NULL);
	366
45c5eb67 HB	367	vcpu_put(vcpu);
45c5eb67 HB	368
bbf45ba5 HB	369	return r;
	370	}
	371
	372	int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu vcpu, struct kvm_interrupt irq)
	373	{
9dd921cf	374	kvmppc_core_queue_external(vcpu, irq);
45c5eb67 HB	375
	376	if (waitqueue_active(&vcpu->wq)) {
	377	wake_up_interruptible(&vcpu->wq);
	378	vcpu->stat.halt_wakeup++;
	379	}
	380
bbf45ba5 HB	381	return 0;
	382	}
	383
	384	int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
	385	struct kvm_mp_state *mp_state)
	386	{
	387	return -EINVAL;
	388	}
	389
	390	int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
	391	struct kvm_mp_state *mp_state)
	392	{
	393	return -EINVAL;
	394	}
	395
	396	long kvm_arch_vcpu_ioctl(struct file *filp,
	397	unsigned int ioctl, unsigned long arg)
	398	{
	399	struct kvm_vcpu *vcpu = filp->private_data;
	400	void __user argp = (void __user )arg;
	401	long r;
	402
	403	switch (ioctl) {
	404	case KVM_INTERRUPT: {
	405	struct kvm_interrupt irq;
	406	r = -EFAULT;
	407	if (copy_from_user(&irq, argp, sizeof(irq)))
	408	goto out;
	409	r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
	410	break;
	411	}
	412	default:
	413	r = -EINVAL;
	414	}
	415
	416	out:
	417	return r;
	418	}
	419
	420	int kvm_vm_ioctl_get_dirty_log(struct kvm kvm, struct kvm_dirty_log log)
	421	{
	422	return -ENOTSUPP;
	423	}
	424
	425	long kvm_arch_vm_ioctl(struct file *filp,
	426	unsigned int ioctl, unsigned long arg)
	427	{
	428	long r;
	429
	430	switch (ioctl) {
	431	default:
	432	r = -EINVAL;
	433	}
	434
	435	return r;
	436	}
	437
	438	int kvm_arch_init(void *opaque)
	439	{
	440	return 0;
	441	}
	442
	443	void kvm_arch_exit(void)
	444	{
445	}