system/qemu
system/qemu
1
0
Fork 0
mirror of https://gitlab.com/qemu-project/qemu synced 2024-11-05 20:35:44 +00:00
Code Issues Projects Releases Packages Wiki Activity

Several features, fixes and cleanups for kvm/s390:

Browse source 
- sclp event facility: cleanup structure. This allows to use
   realize/unrealize   as well as migration support via vmsd
 - reboot: Two fixes that make reboot much more reliable
 - ipl: make elf loading more robust
 - flic interrupt controller: This allows to migrate floating
   interrupts, as well as clear them on reset etc.
 - enable async_pf feature of KVM on s390
 - several sclp fixes and cleanups
 - several sigp fixes and cleanups
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJTDwZVAAoJEBF7vIC1phx8lx4P/Rv+UVD9XDFFF8yHuye1am40
 NpRGjdarQ/9QUkS4gqyKwYUvIjAClk5id7U2d5zrfdc8XC49AH0ZhVFMdRupaOon
 AUqXjOXD5zAh9bfUcewg1EK1P1VuKcp0hyh0jFlIqk9Xmidw8N5guQ6iBoTqGJD5
 UYTp0PuSqIjY1RCuF4fCTCurzRd1+J2oKcQBip7BSWlVuWZlg2/hPxoIraLezlz2
 huwOU9tkSGXwSRv4C6fCcukEwlqnvkE6W0MCrHrcb2T8xYwAR2Jjs0TsscbKxb+t
 lIjZRiCxBrFwOLUqGN8DMYtZPffR+cigZ5bYb4o3PPJ0DQL4vLQVd8SPMPrdJhbb
 M7UOaeTclSTQuzmM/Uuc1pmrFc8PDq0dg50dT3weH2bW8aSgyqutYGpmUcm1Q6kq
 JLFuyswOBr1vS9o0TlBunP4+TqJJrnGvtIQ4EbRZm7zP78mBaIIrUcAZlbgOI+XI
 cSjtFXkBOCz0j28J9GSHrsWMC7RQ179TGdcH/FjDpu0dNDOxH7eH5gZPQoQDAqwC
 SjstqJdIFnd0qxOB1EqcgMUxbSqQYq3hoGvJ644ZrMA3T5trBn0fSw3J9ZU/qAK7
 EvOKRacMfcacIj4l0aEQgpwqVmktwIYnkfetX/QAKw/4AImJz/R9GRkmYgjCfOH8
 /CUfXM71zWLEdv1o5uJ5
 =toIt
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/borntraeger/tags/kvm-s390-20140227' into staging

Several features, fixes and cleanups for kvm/s390:

- sclp event facility: cleanup structure. This allows to use
  realize/unrealize   as well as migration support via vmsd
- reboot: Two fixes that make reboot much more reliable
- ipl: make elf loading more robust
- flic interrupt controller: This allows to migrate floating
  interrupts, as well as clear them on reset etc.
- enable async_pf feature of KVM on s390
- several sclp fixes and cleanups
- several sigp fixes and cleanups

* remotes/borntraeger/tags/kvm-s390-20140227: (22 commits)
  s390x/ipl: Fix crash of ELF images with arbitrary entry points
  s390x/kvm: Rework priv instruction handlers
  s390x/kvm: Add missing SIGP CPU RESET order
  s390x/kvm: Rework SIGP INITIAL CPU RESET handler
  s390x/cpu: Use ioctl to reset state in the kernel
  s390-ccw.img: new binary rom to match latest fixes
  s390-ccw.img: Fix sporadic errors with ccw boot image - initialize css
  s390-ccw.img: Fix sporadic reboot hangs: Initialize next_idx
  s390x/event-facility: exploit realize/unrealize
  s390x/event-facility: add support for live migration
  s390x/event-facility: code restructure
  s390x/event-facility: some renaming
  s390x/sclp: Fixed setting of condition code register
  s390x/sclp: Add missing checks to SCLP handler
  s390x/sclp: Fixed the size of sccb and code parameter
  s390x/eventfacility: mask out commands
  s390x/virtio-hcall: Specification exception for illegal subcodes
  s390x/virtio-hcall: Add range check for hypervisor call
  s390x/kvm: Fixed bad SIGP SET-ARCHITECTURE handler
  s390x/async_pf: Check for apf extension and enable pfault
  ...

Conflicts:
	linux-headers/linux/kvm.h

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-03-04 14:50:46 +00:00
commit c2cb92f9ea
22 changed files with 757 additions and 214 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
default-configs/s390x-softmmu.mak
View file

@ -1,2 +1,3 @@
CONFIG_VIRTIO=y
CONFIG_SCLPCONSOLE=y
CONFIG_S390_FLIC=$(CONFIG_KVM)

1
hw/intc/Makefile.objs
View file

@ -25,3 +25,4 @@ obj-$(CONFIG_SH4) += sh_intc.o
obj-$(CONFIG_XICS) += xics.o
obj-$(CONFIG_XICS_KVM) += xics_kvm.o
obj-$(CONFIG_ALLWINNER_A10_PIC) += allwinner-a10-pic.o
obj-$(CONFIG_S390_FLIC) += s390_flic.o

322
hw/intc/s390_flic.c Normal file
View file

@ -0,0 +1,322 @@
/*
* QEMU S390x KVM floating interrupt controller (flic)
*
* Copyright 2014 IBM Corp.
* Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#include <sys/ioctl.h>
#include "qemu/error-report.h"
#include "hw/sysbus.h"
#include "sysemu/kvm.h"
#include "migration/qemu-file.h"
#include "hw/s390x/s390_flic.h"
#include "trace.h"
#define FLIC_SAVE_INITIAL_SIZE getpagesize()
#define FLIC_FAILED (-1UL)
#define FLIC_SAVEVM_VERSION 1
void s390_flic_init(void)
{
DeviceState *dev;
int r;
if (kvm_enabled()) {
dev = qdev_create(NULL, "s390-flic");
object_property_add_child(qdev_get_machine(), "s390-flic",
OBJECT(dev), NULL);
r = qdev_init(dev);
if (r) {
error_report("flic: couldn't create qdev");
}
}
}
/**
* flic_get_all_irqs - store all pending irqs in buffer
* @buf: pointer to buffer which is passed to kernel
* @len: length of buffer
* @flic: pointer to flic device state
*
* Returns: -ENOMEM if buffer is too small,
* -EINVAL if attr.group is invalid,
* -EFAULT if copying to userspace failed,
* on success return number of stored interrupts
*/
static int flic_get_all_irqs(KVMS390FLICState *flic,
void *buf, int len)
{
struct kvm_device_attr attr = {
.group = KVM_DEV_FLIC_GET_ALL_IRQS,
.addr = (uint64_t) buf,
.attr = len,
};
int rc;
rc = ioctl(flic->fd, KVM_GET_DEVICE_ATTR, &attr);
return rc == -1 ? -errno : rc;
}
static void flic_enable_pfault(KVMS390FLICState *flic)
{
struct kvm_device_attr attr = {
.group = KVM_DEV_FLIC_APF_ENABLE,
};
int rc;
rc = ioctl(flic->fd, KVM_SET_DEVICE_ATTR, &attr);
if (rc) {
fprintf(stderr, "flic: couldn't enable pfault\n");
}
}
static void flic_disable_wait_pfault(KVMS390FLICState *flic)
{
struct kvm_device_attr attr = {
.group = KVM_DEV_FLIC_APF_DISABLE_WAIT,
};
int rc;
rc = ioctl(flic->fd, KVM_SET_DEVICE_ATTR, &attr);
if (rc) {
fprintf(stderr, "flic: couldn't disable pfault\n");
}
}
/** flic_enqueue_irqs - returns 0 on success
* @buf: pointer to buffer which is passed to kernel
* @len: length of buffer
* @flic: pointer to flic device state
*
* Returns: -EINVAL if attr.group is unknown
*/
static int flic_enqueue_irqs(void *buf, uint64_t len,
KVMS390FLICState *flic)
{
int rc;
struct kvm_device_attr attr = {
.group = KVM_DEV_FLIC_ENQUEUE,
.addr = (uint64_t) buf,
.attr = len,
};
rc = ioctl(flic->fd, KVM_SET_DEVICE_ATTR, &attr);
return rc ? -errno : 0;
}
/**
* __get_all_irqs - store all pending irqs in buffer
* @flic: pointer to flic device state
* @buf: pointer to pointer to a buffer
* @len: length of buffer
*
* Returns: return value of flic_get_all_irqs
* Note: Retry and increase buffer size until flic_get_all_irqs
* either returns a value >= 0 or a negative error code.
* -ENOMEM is an exception, which means the buffer is too small
* and we should try again. Other negative error codes can be
* -EFAULT and -EINVAL which we ignore at this point
*/
static int __get_all_irqs(KVMS390FLICState *flic,
void **buf, int len)
{
int r;
do {
/* returns -ENOMEM if buffer is too small and number
* of queued interrupts on success */
r = flic_get_all_irqs(flic, *buf, len);
if (r >= 0) {
break;
}
len *= 2;
*buf = g_try_realloc(*buf, len);
if (!buf) {
return -ENOMEM;
}
} while (r == -ENOMEM && len <= KVM_S390_FLIC_MAX_BUFFER);
return r;
}
/**
* kvm_flic_save - Save pending floating interrupts
* @f: QEMUFile containing migration state
* @opaque: pointer to flic device state
*
* Note: Pass buf and len to kernel. Start with one page and
* increase until buffer is sufficient or maxium size is
* reached
*/
static void kvm_flic_save(QEMUFile *f, void *opaque)
{
KVMS390FLICState *flic = opaque;
int len = FLIC_SAVE_INITIAL_SIZE;
void *buf;
int count;
flic_disable_wait_pfault((struct KVMS390FLICState *) opaque);
buf = g_try_malloc0(len);
if (!buf) {
/* Storing FLIC_FAILED into the count field here will cause the
* target system to fail when attempting to load irqs from the
* migration state */
error_report("flic: couldn't allocate memory");
qemu_put_be64(f, FLIC_FAILED);
return;
}
count = __get_all_irqs(flic, &buf, len);
if (count < 0) {
error_report("flic: couldn't retrieve irqs from kernel, rc %d",
count);
/* Storing FLIC_FAILED into the count field here will cause the
* target system to fail when attempting to load irqs from the
* migration state */
qemu_put_be64(f, FLIC_FAILED);
} else {
qemu_put_be64(f, count);
qemu_put_buffer(f, (uint8_t *) buf,
count * sizeof(struct kvm_s390_irq));
}
g_free(buf);
}
/**
* kvm_flic_load - Load pending floating interrupts
* @f: QEMUFile containing migration state
* @opaque: pointer to flic device state
* @version_id: version id for migration
*
* Returns: value of flic_enqueue_irqs, -EINVAL on error
* Note: Do nothing when no interrupts where stored
* in QEMUFile
*/
static int kvm_flic_load(QEMUFile *f, void *opaque, int version_id)
{
uint64_t len = 0;
uint64_t count = 0;
void *buf = NULL;
int r = 0;
if (version_id != FLIC_SAVEVM_VERSION) {
r = -EINVAL;
goto out;
}
flic_enable_pfault((struct KVMS390FLICState *) opaque);
count = qemu_get_be64(f);
len = count * sizeof(struct kvm_s390_irq);
if (count == FLIC_FAILED) {
r = -EINVAL;
goto out;
}
if (count == 0) {
r = 0;
goto out;
}
buf = g_try_malloc0(len);
if (!buf) {
r = -ENOMEM;
goto out;
}
if (qemu_get_buffer(f, (uint8_t *) buf, len) != len) {
r = -EINVAL;
goto out_free;
}
r = flic_enqueue_irqs(buf, len, (struct KVMS390FLICState *) opaque);
out_free:
g_free(buf);
out:
return r;
}
static void kvm_s390_flic_realize(DeviceState *dev, Error **errp)
{
KVMS390FLICState *flic_state = KVM_S390_FLIC(dev);
struct kvm_create_device cd = {0};
int ret;
flic_state->fd = -1;
if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
trace_flic_no_device_api(errno);
return;
}
cd.type = KVM_DEV_TYPE_FLIC;
ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_DEVICE, &cd);
if (ret < 0) {
trace_flic_create_device(errno);
return;
}
flic_state->fd = cd.fd;
/* Register savevm handler for floating interrupts */
register_savevm(NULL, "s390-flic", 0, 1, kvm_flic_save,
kvm_flic_load, (void *) flic_state);
}
static void kvm_s390_flic_unrealize(DeviceState *dev, Error **errp)
{
KVMS390FLICState *flic_state = KVM_S390_FLIC(dev);
unregister_savevm(DEVICE(flic_state), "s390-flic", flic_state);
}
static void kvm_s390_flic_reset(DeviceState *dev)
{
KVMS390FLICState *flic = KVM_S390_FLIC(dev);
struct kvm_device_attr attr = {
.group = KVM_DEV_FLIC_CLEAR_IRQS,
};
int rc = 0;
if (flic->fd == -1) {
return;
}
flic_disable_wait_pfault(flic);
rc = ioctl(flic->fd, KVM_SET_DEVICE_ATTR, &attr);
if (rc) {
trace_flic_reset_failed(errno);
}
flic_enable_pfault(flic);
}
static void kvm_s390_flic_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = kvm_s390_flic_realize;
dc->unrealize = kvm_s390_flic_unrealize;
dc->reset = kvm_s390_flic_reset;
}
static const TypeInfo kvm_s390_flic_info = {
.name = TYPE_KVM_S390_FLIC,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(KVMS390FLICState),
.class_init = kvm_s390_flic_class_init,
};
static void kvm_s390_flic_register_types(void)
{
type_register_static(&kvm_s390_flic_info);
}
type_init(kvm_s390_flic_register_types)

93
hw/s390x/event-facility.c
View file

@ -21,13 +21,13 @@
#include "hw/s390x/sclp.h"
#include "hw/s390x/event-facility.h"
typedef struct EventTypesBus {
typedef struct SCLPEventsBus {
BusState qbus;
} EventTypesBus;
} SCLPEventsBus;
struct SCLPEventFacility {
EventTypesBus sbus;
DeviceState *qdev;
SysBusDevice parent_obj;
SCLPEventsBus sbus;
/* guest' receive mask */
unsigned int receive_mask;
};
@ -291,7 +291,7 @@ static void sclp_events_bus_class_init(ObjectClass *klass, void *data)
{
}
static const TypeInfo s390_sclp_events_bus_info = {
static const TypeInfo sclp_events_bus_info = {
.name = TYPE_SCLP_EVENTS_BUS,
.parent = TYPE_BUS,
.class_init = sclp_events_bus_class_init,
@ -299,7 +299,7 @@ static const TypeInfo s390_sclp_events_bus_info = {
static void command_handler(SCLPEventFacility *ef, SCCB *sccb, uint64_t code)
{
switch (code) {
switch (code & SCLP_CMD_CODE_MASK) {
case SCLP_CMD_READ_EVENT_DATA:
read_event_data(ef, sccb);
break;
@ -315,21 +315,26 @@ static void command_handler(SCLPEventFacility *ef, SCCB *sccb, uint64_t code)
}
}
static int init_event_facility(S390SCLPDevice *sdev)
static const VMStateDescription vmstate_event_facility = {
.name = "vmstate-event-facility",
.version_id = 0,
.minimum_version_id = 0,
.minimum_version_id_old = 0,
.fields = (VMStateField[]) {
VMSTATE_UINT32(receive_mask, SCLPEventFacility),
VMSTATE_END_OF_LIST()
}
};
static int init_event_facility(SCLPEventFacility *event_facility)
{
SCLPEventFacility *event_facility;
DeviceState *sdev = DEVICE(event_facility);
DeviceState *quiesce;
event_facility = g_malloc0(sizeof(SCLPEventFacility));
sdev->ef = event_facility;
sdev->sclp_command_handler = command_handler;
sdev->event_pending = event_pending;
/* Spawn a new sclp-events facility */
/* Spawn a new bus for SCLP events */
qbus_create_inplace(&event_facility->sbus, sizeof(event_facility->sbus),
TYPE_SCLP_EVENTS_BUS, DEVICE(sdev), NULL);
TYPE_SCLP_EVENTS_BUS, sdev, NULL);
event_facility->sbus.qbus.allow_hotplug = 0;
event_facility->qdev = (DeviceState *) sdev;
quiesce = qdev_create(&event_facility->sbus.qbus, "sclpquiesce");
if (!quiesce) {
@ -346,43 +351,57 @@ static int init_event_facility(S390SCLPDevice *sdev)
static void reset_event_facility(DeviceState *dev)
{
S390SCLPDevice *sdev = SCLP_S390_DEVICE(dev);
SCLPEventFacility *sdev = EVENT_FACILITY(dev);
sdev->ef->receive_mask = 0;
sdev->receive_mask = 0;
}
static void init_event_facility_class(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
S390SCLPDeviceClass *k = SCLP_S390_DEVICE_CLASS(klass);
SysBusDeviceClass *sbdc = SYS_BUS_DEVICE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(sbdc);
SCLPEventFacilityClass *k = EVENT_FACILITY_CLASS(dc);
dc->reset = reset_event_facility;
dc->vmsd = &vmstate_event_facility;
k->init = init_event_facility;
k->command_handler = command_handler;
k->event_pending = event_pending;
}
static const TypeInfo s390_sclp_event_facility_info = {
.name = "s390-sclp-event-facility",
.parent = TYPE_DEVICE_S390_SCLP,
.instance_size = sizeof(S390SCLPDevice),
static const TypeInfo sclp_event_facility_info = {
.name = TYPE_SCLP_EVENT_FACILITY,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(SCLPEventFacility),
.class_init = init_event_facility_class,
.class_size = sizeof(SCLPEventFacilityClass),
};
static int event_qdev_init(DeviceState *qdev)
static void event_realize(DeviceState *qdev, Error **errp)
{
SCLPEvent *event = DO_UPCAST(SCLPEvent, qdev, qdev);
SCLPEvent *event = SCLP_EVENT(qdev);
SCLPEventClass *child = SCLP_EVENT_GET_CLASS(event);
return child->init(event);
if (child->init) {
int rc = child->init(event);
if (rc < 0) {
error_setg(errp, "SCLP event initialization failed.");
return;
}
}
}
static int event_qdev_exit(DeviceState *qdev)
static void event_unrealize(DeviceState *qdev, Error **errp)
{
SCLPEvent *event = DO_UPCAST(SCLPEvent, qdev, qdev);
SCLPEvent *event = SCLP_EVENT(qdev);
SCLPEventClass *child = SCLP_EVENT_GET_CLASS(event);
if (child->exit) {
child->exit(event);
int rc = child->exit(event);
if (rc < 0) {
error_setg(errp, "SCLP event exit failed.");
return;
}
}
return 0;
}
static void event_class_init(ObjectClass *klass, void *data)
@ -391,11 +410,11 @@ static void event_class_init(ObjectClass *klass, void *data)
dc->bus_type = TYPE_SCLP_EVENTS_BUS;
dc->unplug = qdev_simple_unplug_cb;
dc->init = event_qdev_init;
dc->exit = event_qdev_exit;
dc->realize = event_realize;
dc->unrealize = event_unrealize;
}
static const TypeInfo s390_sclp_event_type_info = {
static const TypeInfo sclp_event_type_info = {
.name = TYPE_SCLP_EVENT,
.parent = TYPE_DEVICE,
.instance_size = sizeof(SCLPEvent),
@ -406,9 +425,9 @@ static const TypeInfo s390_sclp_event_type_info = {
static void register_types(void)
{
type_register_static(&s390_sclp_events_bus_info);
type_register_static(&s390_sclp_event_facility_info);
type_register_static(&s390_sclp_event_type_info);
type_register_static(&sclp_events_bus_info);
type_register_static(&sclp_event_facility_info);
type_register_static(&sclp_event_type_info);
}
type_init(register_types)

21
hw/s390x/ipl.c
View file

@ -95,7 +95,8 @@ static int s390_ipl_init(SysBusDevice *dev)
}
return 0;
} else {
kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, NULL,
uint64_t pentry = KERN_IMAGE_START;
kernel_size = load_elf(ipl->kernel, NULL, NULL, &pentry, NULL,
NULL, 1, ELF_MACHINE, 0);
if (kernel_size == -1) {
kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
@ -104,15 +105,19 @@ static int s390_ipl_init(SysBusDevice *dev)
fprintf(stderr, "could not load kernel '%s'\n", ipl->kernel);
return -1;
}
/* we have to overwrite values in the kernel image, which are "rom" */
strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
/*
* we can not rely on the ELF entry point, since up to 3.2 this
* value was 0x800 (the SALIPL loader) and it wont work. For
* all (Linux) cases 0x10000 (KERN_IMAGE_START) should be fine.
* Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the
* kernel parameters here as well. Note: For old kernels (up to 3.2)
* we can not rely on the ELF entry point - it was 0x800 (the SALIPL
* loader) and it won't work. For this case we force it to 0x10000, too.
*/
ipl->start_addr = KERN_IMAGE_START;
if (pentry == KERN_IMAGE_START || pentry == 0x800) {
ipl->start_addr = KERN_IMAGE_START;
/* Overwrite parameters in the kernel image, which are "rom" */
strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
} else {
ipl->start_addr = pentry;
}
}
if (ipl->initrd) {
ram_addr_t initrd_offset;

8
hw/s390x/s390-virtio-ccw.c
View file

@ -13,13 +13,14 @@
#include "exec/address-spaces.h"
#include "s390-virtio.h"
#include "hw/s390x/sclp.h"
#include "hw/s390x/s390_flic.h"
#include "ioinst.h"
#include "css.h"
#include "virtio-ccw.h"
void io_subsystem_reset(void)
{
DeviceState *css, *sclp;
DeviceState *css, *sclp, *flic;
css = DEVICE(object_resolve_path_type("", "virtual-css-bridge", NULL));
if (css) {
@ -30,6 +31,10 @@ void io_subsystem_reset(void)
if (sclp) {
qdev_reset_all(sclp);
}
flic = DEVICE(object_resolve_path_type("", "s390-flic", NULL));
if (flic) {
qdev_reset_all(flic);
}
}
static int virtio_ccw_hcall_notify(const uint64_t *args)
@ -99,6 +104,7 @@ static void ccw_init(QEMUMachineInitArgs *args)
s390_sclp_init();
s390_init_ipl_dev(args->kernel_filename, args->kernel_cmdline,
args->initrd_filename, "s390-ccw.img");
s390_flic_init();
/* register hypercalls */
virtio_ccw_register_hcalls();

12
hw/s390x/s390-virtio-hcall.c
View file

@ -26,11 +26,15 @@ void s390_register_virtio_hypercall(uint64_t code, s390_virtio_fn fn)
int s390_virtio_hypercall(CPUS390XState *env)
{
s390_virtio_fn fn = s390_diag500_table[env->regs[1]];
s390_virtio_fn fn;
if (!fn) {
return -EINVAL;
if (env->regs[1] < MAX_DIAG_SUBCODES) {
fn = s390_diag500_table[env->regs[1]];
if (fn) {
env->regs[2] = fn(&env->regs[2]);
return 0;
}
}
return fn(&env->regs[2]);
return -EINVAL;
}

2
hw/s390x/s390-virtio.c
View file

@ -36,6 +36,7 @@
#include "hw/s390x/s390-virtio-bus.h"
#include "hw/s390x/sclp.h"
#include "hw/s390x/s390_flic.h"
#include "hw/s390x/s390-virtio.h"
//#define DEBUG_S390
@ -251,6 +252,7 @@ static void s390_init(QEMUMachineInitArgs *args)
s390_sclp_init();
s390_init_ipl_dev(args->kernel_filename, args->kernel_cmdline,
args->initrd_filename, ZIPL_FILENAME);
s390_flic_init();
/* register hypercalls */
s390_virtio_register_hcalls();

69
hw/s390x/sclp.c
View file

@ -18,11 +18,12 @@
#include "sysemu/sysemu.h"
#include "hw/s390x/sclp.h"
#include "hw/s390x/event-facility.h"
static inline S390SCLPDevice *get_event_facility(void)
static inline SCLPEventFacility *get_event_facility(void)
{
ObjectProperty *op = object_property_find(qdev_get_machine(),
"s390-sclp-event-facility",
TYPE_SCLP_EVENT_FACILITY,
NULL);
assert(op);
return op->opaque;
@ -89,9 +90,10 @@ static void sclp_read_cpu_info(SCCB *sccb)
sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
}
static void sclp_execute(SCCB *sccb, uint64_t code)
static void sclp_execute(SCCB *sccb, uint32_t code)
{
S390SCLPDevice *sdev = get_event_facility();
SCLPEventFacility *ef = get_event_facility();
SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
switch (code & SCLP_CMD_CODE_MASK) {
case SCLP_CMDW_READ_SCP_INFO:
@ -102,12 +104,12 @@ static void sclp_execute(SCCB *sccb, uint64_t code)
sclp_read_cpu_info(sccb);
break;
default:
sdev->sclp_command_handler(sdev->ef, sccb, code);
efc->command_handler(ef, sccb, code);
break;
}
}
int sclp_service_call(uint32_t sccb, uint64_t code)
int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code)
{
int r = 0;
SCCB work_sccb;
@ -115,11 +117,16 @@ int sclp_service_call(uint32_t sccb, uint64_t code)
hwaddr sccb_len = sizeof(SCCB);
/* first some basic checks on program checks */
if (env->psw.mask & PSW_MASK_PSTATE) {
r = -PGM_PRIVILEGED;
goto out;
}
if (cpu_physical_memory_is_io(sccb)) {
r = -PGM_ADDRESSING;
goto out;
}
if (sccb & ~0x7ffffff8ul) {
if ((sccb & ~0x1fffUL) == 0 || (sccb & ~0x1fffUL) == env->psa
|| (sccb & ~0x7ffffff8UL) != 0) {
r = -PGM_SPECIFICATION;
goto out;
}
@ -151,11 +158,13 @@ out:
void sclp_service_interrupt(uint32_t sccb)
{
S390SCLPDevice *sdev = get_event_facility();
SCLPEventFacility *ef = get_event_facility();
SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
uint32_t param = sccb & ~3;
/* Indicate whether an event is still pending */
param |= sdev->event_pending(sdev->ef) ? 1 : 0;
param |= efc->event_pending(ef) ? 1 : 0;
if (!param) {
/* No need to send an interrupt, there's nothing to be notified about */
@ -168,47 +177,9 @@ void sclp_service_interrupt(uint32_t sccb)
void s390_sclp_init(void)
{
DeviceState *dev = qdev_create(NULL, "s390-sclp-event-facility");
DeviceState *dev = qdev_create(NULL, TYPE_SCLP_EVENT_FACILITY);
object_property_add_child(qdev_get_machine(), "s390-sclp-event-facility",
object_property_add_child(qdev_get_machine(), TYPE_SCLP_EVENT_FACILITY,
OBJECT(dev), NULL);
qdev_init_nofail(dev);
}
static int s390_sclp_dev_init(SysBusDevice *dev)
{
int r;
S390SCLPDevice *sdev = (S390SCLPDevice *)dev;
S390SCLPDeviceClass *sclp = SCLP_S390_DEVICE_GET_CLASS(dev);
r = sclp->init(sdev);
if (!r) {
assert(sdev->event_pending);
assert(sdev->sclp_command_handler);
}
return r;
}
static void s390_sclp_device_class_init(ObjectClass *klass, void *data)
{
SysBusDeviceClass *dc = SYS_BUS_DEVICE_CLASS(klass);
dc->init = s390_sclp_dev_init;
}
static const TypeInfo s390_sclp_device_info = {
.name = TYPE_DEVICE_S390_SCLP,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(S390SCLPDevice),
.class_init = s390_sclp_device_class_init,
.class_size = sizeof(S390SCLPDeviceClass),
.abstract = true,
};
static void s390_sclp_register_types(void)
{
type_register_static(&s390_sclp_device_info);
}
type_init(s390_sclp_register_types)

19
include/hw/s390x/event-facility.h
View file

@ -176,4 +176,23 @@ typedef struct SCLPEventClass {
bool (*can_handle_event)(uint8_t type);
} SCLPEventClass;
#define TYPE_SCLP_EVENT_FACILITY "s390-sclp-event-facility"
#define EVENT_FACILITY(obj) \
OBJECT_CHECK(SCLPEventFacility, (obj), TYPE_SCLP_EVENT_FACILITY)
#define EVENT_FACILITY_CLASS(klass) \
OBJECT_CLASS_CHECK(SCLPEventFacilityClass, (klass), \
TYPE_SCLP_EVENT_FACILITY)
#define EVENT_FACILITY_GET_CLASS(obj) \
OBJECT_GET_CLASS(SCLPEventFacilityClass, (obj), \
TYPE_SCLP_EVENT_FACILITY)
typedef struct SCLPEventFacility SCLPEventFacility;
typedef struct SCLPEventFacilityClass {
DeviceClass parent_class;
int (*init)(SCLPEventFacility *ef);
void (*command_handler)(SCLPEventFacility *ef, SCCB *sccb, uint64_t code);
bool (*event_pending)(SCLPEventFacility *ef);
} SCLPEventFacilityClass;
#endif

33
include/hw/s390x/s390_flic.h Normal file
View file

@ -0,0 +1,33 @@
/*
* QEMU S390x KVM floating interrupt controller (flic)
*
* Copyright 2014 IBM Corp.
* Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef __KVM_S390_FLIC_H
#define __KVM_S390_FLIC_H
#include "hw/sysbus.h"
#define TYPE_KVM_S390_FLIC "s390-flic"
#define KVM_S390_FLIC(obj) \
OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC)
typedef struct KVMS390FLICState {
SysBusDevice parent_obj;
uint32_t fd;
} KVMS390FLICState;
#ifdef CONFIG_KVM
void s390_flic_init(void);
#else
static inline void s390_flic_init(void) { }
#endif
#endif /* __KVM_S390_FLIC_H */

24
include/hw/s390x/sclp.h
View file

@ -161,30 +161,6 @@ static inline int sccb_data_len(SCCB *sccb)
return be16_to_cpu(sccb->h.length) - sizeof(sccb->h);
}
#define TYPE_DEVICE_S390_SCLP "s390-sclp-device"
#define SCLP_S390_DEVICE(obj) \
OBJECT_CHECK(S390SCLPDevice, (obj), TYPE_DEVICE_S390_SCLP)
#define SCLP_S390_DEVICE_CLASS(klass) \
OBJECT_CLASS_CHECK(S390SCLPDeviceClass, (klass), \
TYPE_DEVICE_S390_SCLP)
#define SCLP_S390_DEVICE_GET_CLASS(obj) \
OBJECT_GET_CLASS(S390SCLPDeviceClass, (obj), \
TYPE_DEVICE_S390_SCLP)
typedef struct SCLPEventFacility SCLPEventFacility;
typedef struct S390SCLPDevice {
SysBusDevice busdev;
SCLPEventFacility *ef;
void (*sclp_command_handler)(SCLPEventFacility *ef, SCCB *sccb,
uint64_t code);
bool (*event_pending)(SCLPEventFacility *ef);
} S390SCLPDevice;
typedef struct S390SCLPDeviceClass {
DeviceClass qdev;
int (*init)(S390SCLPDevice *sdev);
} S390SCLPDeviceClass;
void s390_sclp_init(void);
void sclp_service_interrupt(uint32_t sccb);

19
linux-headers/asm-s390/kvm.h
View file

@ -16,6 +16,22 @@
#define __KVM_S390
/* Device control API: s390-specific devices */
#define KVM_DEV_FLIC_GET_ALL_IRQS 1
#define KVM_DEV_FLIC_ENQUEUE 2
#define KVM_DEV_FLIC_CLEAR_IRQS 3
#define KVM_DEV_FLIC_APF_ENABLE 4
#define KVM_DEV_FLIC_APF_DISABLE_WAIT 5
/*
* We can have up to 4*64k pending subchannels + 8 adapter interrupts,
* as well as up to ASYNC_PF_PER_VCPU*KVM_MAX_VCPUS pfault done interrupts.
* There are also sclp and machine checks. This gives us
* sizeof(kvm_s390_irq)*(4*65536+8+64*64+1+1) = 72 * 266250 = 19170000
* Lets round up to 8192 pages.
*/
#define KVM_S390_MAX_FLOAT_IRQS 266250
#define KVM_S390_FLIC_MAX_BUFFER 0x2000000
/* for KVM_GET_REGS and KVM_SET_REGS */
struct kvm_regs {
/* general purpose regs for s390 */
@ -57,4 +73,7 @@ struct kvm_sync_regs {
#define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
#define KVM_REG_S390_PFTOKEN (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x5)
#define KVM_REG_S390_PFCOMPARE (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x6)
#define KVM_REG_S390_PFSELECT (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x7)
#endif

66
linux-headers/linux/kvm.h
View file

@ -413,6 +413,8 @@ struct kvm_s390_psw {
#define KVM_S390_PROGRAM_INT 0xfffe0001u
#define KVM_S390_SIGP_SET_PREFIX 0xfffe0002u
#define KVM_S390_RESTART 0xfffe0003u
#define KVM_S390_INT_PFAULT_INIT 0xfffe0004u
#define KVM_S390_INT_PFAULT_DONE 0xfffe0005u
#define KVM_S390_MCHK 0xfffe1000u
#define KVM_S390_INT_VIRTIO 0xffff2603u
#define KVM_S390_INT_SERVICE 0xffff2401u
@ -434,6 +436,69 @@ struct kvm_s390_interrupt {
__u64 parm64;
};
struct kvm_s390_io_info {
__u16 subchannel_id;
__u16 subchannel_nr;
__u32 io_int_parm;
__u32 io_int_word;
};
struct kvm_s390_ext_info {
__u32 ext_params;
__u32 pad;
__u64 ext_params2;
};
struct kvm_s390_pgm_info {
__u64 trans_exc_code;
__u64 mon_code;
__u64 per_address;
__u32 data_exc_code;
__u16 code;
__u16 mon_class_nr;
__u8 per_code;
__u8 per_atmid;
__u8 exc_access_id;
__u8 per_access_id;
__u8 op_access_id;
__u8 pad[3];
};
struct kvm_s390_prefix_info {
__u32 address;
};
struct kvm_s390_extcall_info {
__u16 code;
};
struct kvm_s390_emerg_info {
__u16 code;
};
struct kvm_s390_mchk_info {
__u64 cr14;
__u64 mcic;
__u64 failing_storage_address;
__u32 ext_damage_code;
__u32 pad;
__u8 fixed_logout[16];
};
struct kvm_s390_irq {
__u64 type;
union {
struct kvm_s390_io_info io;
struct kvm_s390_ext_info ext;
struct kvm_s390_pgm_info pgm;
struct kvm_s390_emerg_info emerg;
struct kvm_s390_extcall_info extcall;
struct kvm_s390_prefix_info prefix;
struct kvm_s390_mchk_info mchk;
char reserved[64];
} u;
};
/* for KVM_SET_GUEST_DEBUG */
#define KVM_GUESTDBG_ENABLE 0x00000001
@ -855,6 +920,7 @@ struct kvm_device_attr {
#define KVM_DEV_VFIO_GROUP_ADD 1
#define KVM_DEV_VFIO_GROUP_DEL 2
#define KVM_DEV_TYPE_ARM_VGIC_V2 5
#define KVM_DEV_TYPE_FLIC 6
/*
* ioctls for VM fds

BIN
pc-bios/s390-ccw.img
View file

Binary file not shown.

3
pc-bios/s390-ccw/main.c
View file

@ -10,7 +10,6 @@
#include "s390-ccw.h"
struct subchannel_id blk_schid;
char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
uint64_t boot_value;
@ -23,13 +22,13 @@ void virtio_panic(const char *string)
static void virtio_setup(uint64_t dev_info)
{
struct subchannel_id blk_schid = { .one = 1 };
struct schib schib;
int i;
int r;
bool found = false;
bool check_devno = false;
uint16_t dev_no = -1;
blk_schid.one = 1;
if (dev_info != -1) {
check_devno = true;

1
pc-bios/s390-ccw/virtio.c
View file

@ -124,6 +124,7 @@ static void vring_init(struct vring *vr, unsigned int num, void *p,
vr->used->flags = VRING_USED_F_NO_NOTIFY;
vr->used->idx = 0;
vr->used_idx = 0;
vr->next_idx = 0;
debug_print_addr("init vr", vr);
}

15
target-s390x/cpu.c
View file

@ -83,6 +83,7 @@ static void s390_cpu_reset(CPUState *s)
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUS390XState *env = &cpu->env;
env->pfault_token = -1UL;
s390_del_running_cpu(cpu);
scc->parent_reset(s);
#if !defined(CONFIG_USER_ONLY)
@ -105,6 +106,17 @@ static void s390_cpu_initial_reset(CPUState *s)
/* architectured initial values for CR 0 and 14 */
env->cregs[0] = CR0_RESET;
env->cregs[14] = CR14_RESET;
env->pfault_token = -1UL;
#if defined(CONFIG_KVM)
/* Reset state inside the kernel that we cannot access yet from QEMU. */
if (kvm_enabled()) {
if (kvm_vcpu_ioctl(s, KVM_S390_INITIAL_RESET, NULL)) {
perror("Initial CPU reset failed");
}
}
#endif
}
/* CPUClass:reset() */
@ -123,6 +135,9 @@ static void s390_cpu_full_reset(CPUState *s)
/* architectured initial values for CR 0 and 14 */
env->cregs[0] = CR0_RESET;
env->cregs[14] = CR14_RESET;
env->pfault_token = -1UL;
/* set halted to 1 to make sure we can add the cpu in
* s390_ipl_cpu code, where CPUState::halted is set back to 0
* after incrementing the cpu counter */

6
target-s390x/cpu.h
View file

@ -121,6 +121,10 @@ typedef struct CPUS390XState {
uint64_t cputm;
uint32_t todpr;
uint64_t pfault_token;
uint64_t pfault_compare;
uint64_t pfault_select;
CPU_COMMON
/* reset does memset(0) up to here */
@ -959,7 +963,7 @@ struct sysib_322 {
void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr);
int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
target_ulong *raddr, int *flags);
int sclp_service_call(uint32_t sccb, uint64_t code);
int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst,
uint64_t vr);

249
target-s390x/kvm.c
View file

@ -53,25 +53,28 @@
#define IPA0_B9 0xb900
#define IPA0_EB 0xeb00
#define PRIV_SCLP_CALL 0x20
#define PRIV_CSCH 0x30
#define PRIV_HSCH 0x31
#define PRIV_MSCH 0x32
#define PRIV_SSCH 0x33
#define PRIV_STSCH 0x34
#define PRIV_TSCH 0x35
#define PRIV_TPI 0x36
#define PRIV_SAL 0x37
#define PRIV_RSCH 0x38
#define PRIV_STCRW 0x39
#define PRIV_STCPS 0x3a
#define PRIV_RCHP 0x3b
#define PRIV_SCHM 0x3c
#define PRIV_CHSC 0x5f
#define PRIV_SIGA 0x74
#define PRIV_XSCH 0x76
#define PRIV_SQBS 0x8a
#define PRIV_EQBS 0x9c
#define PRIV_B2_SCLP_CALL 0x20
#define PRIV_B2_CSCH 0x30
#define PRIV_B2_HSCH 0x31
#define PRIV_B2_MSCH 0x32
#define PRIV_B2_SSCH 0x33
#define PRIV_B2_STSCH 0x34
#define PRIV_B2_TSCH 0x35
#define PRIV_B2_TPI 0x36
#define PRIV_B2_SAL 0x37
#define PRIV_B2_RSCH 0x38
#define PRIV_B2_STCRW 0x39
#define PRIV_B2_STCPS 0x3a
#define PRIV_B2_RCHP 0x3b
#define PRIV_B2_SCHM 0x3c
#define PRIV_B2_CHSC 0x5f
#define PRIV_B2_SIGA 0x74
#define PRIV_B2_XSCH 0x76
#define PRIV_EB_SQBS 0x8a
#define PRIV_B9_EQBS 0x9c
#define DIAG_IPL 0x308
#define DIAG_KVM_HYPERCALL 0x500
#define DIAG_KVM_BREAKPOINT 0x501
@ -87,12 +90,14 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
};
static int cap_sync_regs;
static int cap_async_pf;
static void *legacy_s390_alloc(size_t size);
int kvm_arch_init(KVMState *s)
{
cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
|| !kvm_check_extension(s, KVM_CAP_S390_COW)) {
phys_mem_set_alloc(legacy_s390_alloc);
@ -178,6 +183,29 @@ int kvm_arch_put_registers(CPUState *cs, int level)
return ret;
}
if (cap_async_pf) {
reg.id = KVM_REG_S390_PFTOKEN;
reg.addr = (__u64)&(env->pfault_token);
ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
if (ret < 0) {
return ret;
}
reg.id = KVM_REG_S390_PFCOMPARE;
reg.addr = (__u64)&(env->pfault_compare);
ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
if (ret < 0) {
return ret;
}
reg.id = KVM_REG_S390_PFSELECT;
reg.addr = (__u64)&(env->pfault_select);
ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
if (ret < 0) {
return ret;
}
}
if (cap_sync_regs &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
@ -282,6 +310,29 @@ int kvm_arch_get_registers(CPUState *cs)
return r;
}
if (cap_async_pf) {
reg.id = KVM_REG_S390_PFTOKEN;
reg.addr = (__u64)&(env->pfault_token);
r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
if (r < 0) {
return r;
}
reg.id = KVM_REG_S390_PFCOMPARE;
reg.addr = (__u64)&(env->pfault_compare);
r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
if (r < 0) {
return r;
}
reg.id = KVM_REG_S390_PFSELECT;
reg.addr = (__u64)&(env->pfault_select);
r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
if (r < 0) {
return r;
}
}
return 0;
}
@ -392,117 +443,128 @@ static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
uint16_t ipbh0)
{
CPUS390XState *env = &cpu->env;
uint32_t sccb;
uint64_t code;
uint64_t sccb;
uint32_t code;
int r = 0;
cpu_synchronize_state(CPU(cpu));
if (env->psw.mask & PSW_MASK_PSTATE) {
enter_pgmcheck(cpu, PGM_PRIVILEGED);
return 0;
}
sccb = env->regs[ipbh0 & 0xf];
code = env->regs[(ipbh0 & 0xf0) >> 4];
r = sclp_service_call(sccb, code);
r = sclp_service_call(env, sccb, code);
if (r < 0) {
enter_pgmcheck(cpu, -r);
} else {
setcc(cpu, r);
}
setcc(cpu, r);
return 0;
}
static int kvm_handle_css_inst(S390CPU *cpu, struct kvm_run *run,
uint8_t ipa0, uint8_t ipa1, uint8_t ipb)
static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
CPUS390XState *env = &cpu->env;
if (ipa0 != 0xb2) {
/* Not handled for now. */
return -1;
}
int rc = 0;
uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
cpu_synchronize_state(CPU(cpu));
switch (ipa1) {
case PRIV_XSCH:
case PRIV_B2_XSCH:
ioinst_handle_xsch(cpu, env->regs[1]);
break;
case PRIV_CSCH:
case PRIV_B2_CSCH:
ioinst_handle_csch(cpu, env->regs[1]);
break;
case PRIV_HSCH:
case PRIV_B2_HSCH:
ioinst_handle_hsch(cpu, env->regs[1]);
break;
case PRIV_MSCH:
case PRIV_B2_MSCH:
ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
case PRIV_SSCH:
case PRIV_B2_SSCH:
ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
case PRIV_STCRW:
case PRIV_B2_STCRW:
ioinst_handle_stcrw(cpu, run->s390_sieic.ipb);
break;
case PRIV_STSCH:
case PRIV_B2_STSCH:
ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
case PRIV_TSCH:
case PRIV_B2_TSCH:
/* We should only get tsch via KVM_EXIT_S390_TSCH. */
fprintf(stderr, "Spurious tsch intercept\n");
break;
case PRIV_CHSC:
case PRIV_B2_CHSC:
ioinst_handle_chsc(cpu, run->s390_sieic.ipb);
break;
case PRIV_TPI:
case PRIV_B2_TPI:
/* This should have been handled by kvm already. */
fprintf(stderr, "Spurious tpi intercept\n");
break;
case PRIV_SCHM:
case PRIV_B2_SCHM:
ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
run->s390_sieic.ipb);
break;
case PRIV_RSCH:
case PRIV_B2_RSCH:
ioinst_handle_rsch(cpu, env->regs[1]);
break;
case PRIV_RCHP:
case PRIV_B2_RCHP:
ioinst_handle_rchp(cpu, env->regs[1]);
break;
case PRIV_STCPS:
case PRIV_B2_STCPS:
/* We do not provide this instruction, it is suppressed. */
break;
case PRIV_SAL:
case PRIV_B2_SAL:
ioinst_handle_sal(cpu, env->regs[1]);
break;
case PRIV_SIGA:
case PRIV_B2_SIGA:
/* Not provided, set CC = 3 for subchannel not operational */
setcc(cpu, 3);
break;
case PRIV_B2_SCLP_CALL:
rc = kvm_sclp_service_call(cpu, run, ipbh0);
break;
default:
return -1;
rc = -1;
DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
break;
}
return 0;
return rc;
}
static int handle_priv(S390CPU *cpu, struct kvm_run *run,
uint8_t ipa0, uint8_t ipa1)
static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
int r = 0;
uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
uint8_t ipb = run->s390_sieic.ipb & 0xff;
DPRINTF("KVM: PRIV: %d\n", ipa1);
switch (ipa1) {
case PRIV_SCLP_CALL:
r = kvm_sclp_service_call(cpu, run, ipbh0);
break;
default:
r = kvm_handle_css_inst(cpu, run, ipa0, ipa1, ipb);
if (r == -1) {
DPRINTF("KVM: unhandled PRIV: 0x%x\n", ipa1);
}
break;
case PRIV_B9_EQBS:
/* just inject exception */
r = -1;
break;
default:
r = -1;
DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
break;
}
return r;
}
static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
int r = 0;
switch (ipa1) {
case PRIV_EB_SQBS:
/* just inject exception */
r = -1;
break;
default:
r = -1;
DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipa1);
break;
}
return r;
@ -511,11 +573,16 @@ static int handle_priv(S390CPU *cpu, struct kvm_run *run,
static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
{
CPUS390XState *env = &cpu->env;
int ret;
cpu_synchronize_state(CPU(cpu));
env->regs[2] = s390_virtio_hypercall(env);
ret = s390_virtio_hypercall(env);
if (ret == -EINVAL) {
enter_pgmcheck(cpu, PGM_SPECIFICATION);
return 0;
}
return 0;
return ret;
}
static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
@ -576,25 +643,22 @@ int kvm_s390_cpu_restart(S390CPU *cpu)
return 0;
}
static int s390_cpu_initial_reset(S390CPU *cpu)
static void sigp_initial_cpu_reset(void *arg)
{
CPUState *cs = CPU(cpu);
CPUS390XState *env = &cpu->env;
int i;
CPUState *cpu = arg;
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
s390_del_running_cpu(cpu);
if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL) < 0) {
perror("cannot init reset vcpu");
}
cpu_synchronize_state(cpu);
scc->initial_cpu_reset(cpu);
}
/* Manually zero out all registers */
cpu_synchronize_state(cs);
for (i = 0; i < 16; i++) {
env->regs[i] = 0;
}
static void sigp_cpu_reset(void *arg)
{
CPUState *cpu = arg;
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
DPRINTF("DONE: SIGP initial reset: %p\n", env);
return 0;
cpu_synchronize_state(cpu);
scc->cpu_reset(cpu);
}
#define SIGP_ORDER_MASK 0x000000ff
@ -628,10 +692,17 @@ static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
cc = kvm_s390_cpu_restart(target_cpu);
break;
case SIGP_SET_ARCH:
/* make the caller panic */
return -1;
*statusreg &= 0xffffffff00000000UL;
*statusreg |= SIGP_STAT_INVALID_PARAMETER;
cc = 1; /* status stored */
break;
case SIGP_INITIAL_CPU_RESET:
cc = s390_cpu_initial_reset(target_cpu);
run_on_cpu(CPU(target_cpu), sigp_initial_cpu_reset, CPU(target_cpu));
cc = 0;
break;
case SIGP_CPU_RESET:
run_on_cpu(CPU(target_cpu), sigp_cpu_reset, CPU(target_cpu));
cc = 0;
break;
default:
DPRINTF("KVM: unknown SIGP: 0x%x\n", order_code);
@ -656,9 +727,13 @@ static void handle_instruction(S390CPU *cpu, struct kvm_run *run)
run->s390_sieic.ipa, run->s390_sieic.ipb);
switch (ipa0) {
case IPA0_B2:
r = handle_b2(cpu, run, ipa1);
break;
case IPA0_B9:
r = handle_b9(cpu, run, ipa1);
break;
case IPA0_EB:
r = handle_priv(cpu, run, ipa0 >> 8, ipa1);
r = handle_eb(cpu, run, ipa1);
break;
case IPA0_DIAG:
r = handle_diag(cpu, run, run->s390_sieic.ipb);

2
target-s390x/misc_helper.c
View file

@ -93,7 +93,7 @@ void program_interrupt(CPUS390XState *env, uint32_t code, int ilen)
/* SCLP service call */
uint32_t HELPER(servc)(CPUS390XState *env, uint64_t r1, uint64_t r2)
{
int r = sclp_service_call(r1, r2);
int r = sclp_service_call(env, r1, r2);
if (r < 0) {
program_interrupt(env, -r, 4);
return 0;

5
trace-events
View file

@ -1162,6 +1162,11 @@ css_io_interrupt(int cssid, int ssid, int schid, uint32_t intparm, uint8_t isc,
virtio_ccw_interpret_ccw(int cssid, int ssid, int schid, int cmd_code) "VIRTIO-CCW: %x.%x.%04x: interpret command %x"
virtio_ccw_new_device(int cssid, int ssid, int schid, int devno, const char *devno_mode) "VIRTIO-CCW: add subchannel %x.%x.%04x, devno %04x (%s)"
# hw/intc/s390_flic.c
flic_create_device(int err) "flic: create device failed %d"
flic_no_device_api(int err) "flic: no Device Contral API support %d"
flic_reset_failed(int err) "flic: reset failed %d"
# migration.c
migrate_set_state(int new_state) "new state %d"