*
*/
+#include "qemu/osdep.h"
+#include "qapi/error.h"
#include "cpu.h"
#include "sysemu/kvm.h"
#include "exec/memory.h"
#include "sysemu/sysemu.h"
#include "exec/address-spaces.h"
-#include "qemu/config-file.h"
+#include "hw/boards.h"
#include "hw/s390x/sclp.h"
#include "hw/s390x/event-facility.h"
#include "hw/s390x/s390-pci-bus.h"
-static inline SCLPEventFacility *get_event_facility(void)
+static inline SCLPDevice *get_sclp_device(void)
{
- ObjectProperty *op = object_property_find(qdev_get_machine(),
- TYPE_SCLP_EVENT_FACILITY,
- NULL);
- assert(op);
- return op->opaque;
+ return SCLP(object_resolve_path_type("", TYPE_SCLP, NULL));
}
/* Provide information about the configuration, CPUs and storage */
-static void read_SCP_info(SCCB *sccb)
+static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
{
ReadInfo *read_info = (ReadInfo *) sccb;
+ MachineState *machine = MACHINE(qdev_get_machine());
sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
CPUState *cpu;
int cpu_count = 0;
int i = 0;
- int increment_size = 20;
int rnsize, rnmax;
- QemuOpts *opts = qemu_opts_find(qemu_find_opts("memory"), NULL);
- int slots = qemu_opt_get_number(opts, "slots", 0);
- int max_avail_slots = s390_get_memslot_count(kvm_state);
-
- if (slots > max_avail_slots) {
- slots = max_avail_slots;
- }
+ int slots = MIN(machine->ram_slots, s390_get_memslot_count(kvm_state));
CPU_FOREACH(cpu) {
cpu_count++;
read_info->facilities = cpu_to_be64(SCLP_HAS_CPU_INFO |
SCLP_HAS_PCI_RECONFIG);
- /*
- * The storage increment size is a multiple of 1M and is a power of 2.
- * The number of storage increments must be MAX_STORAGE_INCREMENTS or fewer.
- */
- while ((ram_size >> increment_size) > MAX_STORAGE_INCREMENTS) {
- increment_size++;
- }
- rnmax = ram_size >> increment_size;
-
/* Memory Hotplug is only supported for the ccw machine type */
if (mhd) {
- while ((mhd->standby_mem_size >> increment_size) >
- MAX_STORAGE_INCREMENTS) {
- increment_size++;
- }
- assert(increment_size == mhd->increment_size);
-
mhd->standby_subregion_size = MEM_SECTION_SIZE;
/* Deduct the memory slot already used for core */
if (slots > 0) {
}
mhd->padded_ram_size = ram_size + mhd->pad_size;
mhd->rzm = 1 << mhd->increment_size;
- rnmax = ((ram_size + mhd->standby_mem_size + mhd->pad_size)
- >> mhd->increment_size);
read_info->facilities |= cpu_to_be64(SCLP_FC_ASSIGN_ATTACH_READ_STOR);
}
- rnsize = 1 << (increment_size - 20);
+ rnsize = 1 << (sclp->increment_size - 20);
if (rnsize <= 128) {
read_info->rnsize = rnsize;
} else {
read_info->rnsize2 = cpu_to_be32(rnsize);
}
+ rnmax = machine->maxram_size >> sclp->increment_size;
if (rnmax < 0x10000) {
read_info->rnmax = cpu_to_be16(rnmax);
} else {
sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
}
-static void read_storage_element0_info(SCCB *sccb)
+static void read_storage_element0_info(SCLPDevice *sclp, SCCB *sccb)
{
int i, assigned;
int subincrement_id = SCLP_STARTING_SUBINCREMENT_ID;
ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
- assert(mhd);
+ if (!mhd) {
+ sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
+ return;
+ }
if ((ram_size >> mhd->increment_size) >= 0x10000) {
sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
}
-static void read_storage_element1_info(SCCB *sccb)
+static void read_storage_element1_info(SCLPDevice *sclp, SCCB *sccb)
{
ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
- assert(mhd);
+ if (!mhd) {
+ sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
+ return;
+ }
if ((mhd->standby_mem_size >> mhd->increment_size) >= 0x10000) {
sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
sccb->h.response_code = cpu_to_be16(SCLP_RC_STANDBY_READ_COMPLETION);
}
-static void attach_storage_element(SCCB *sccb, uint16_t element)
+static void attach_storage_element(SCLPDevice *sclp, SCCB *sccb,
+ uint16_t element)
{
int i, assigned, subincrement_id;
AttachStorageElement *attach_info = (AttachStorageElement *) sccb;
sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
- assert(mhd);
+ if (!mhd) {
+ sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
+ return;
+ }
if (element != 1) {
sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
}
-static void assign_storage(SCCB *sccb)
+static void assign_storage(SCLPDevice *sclp, SCCB *sccb)
{
MemoryRegion *mr = NULL;
uint64_t this_subregion_size;
AssignStorage *assign_info = (AssignStorage *) sccb;
sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
- assert(mhd);
- ram_addr_t assign_addr = (assign_info->rn - 1) * mhd->rzm;
+ ram_addr_t assign_addr;
MemoryRegion *sysmem = get_system_memory();
+ if (!mhd) {
+ sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
+ return;
+ }
+ assign_addr = (assign_info->rn - 1) * mhd->rzm;
+
if ((assign_addr % MEM_SECTION_SIZE == 0) &&
(assign_addr >= mhd->padded_ram_size)) {
/* Re-use existing memory region if found */
mr = memory_region_find(sysmem, assign_addr, 1).mr;
+ memory_region_unref(mr);
if (!mr) {
MemoryRegion *standby_ram = g_new(MemoryRegion, 1);
this_subregion_size = mhd->standby_subregion_size;
}
- memory_region_init_ram(standby_ram, NULL, id, this_subregion_size, &error_abort);
+ memory_region_init_ram(standby_ram, NULL, id, this_subregion_size,
+ &error_fatal);
+ /* This is a hack to make memory hotunplug work again. Once we have
+ * subdevices, we have to unparent them when unassigning memory,
+ * instead of doing it via the ref count of the MemoryRegion. */
+ object_ref(OBJECT(standby_ram));
+ object_unparent(OBJECT(standby_ram));
vmstate_register_ram_global(standby_ram);
memory_region_add_subregion(sysmem, offset, standby_ram);
}
sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
}
-static void unassign_storage(SCCB *sccb)
+static void unassign_storage(SCLPDevice *sclp, SCCB *sccb)
{
MemoryRegion *mr = NULL;
AssignStorage *assign_info = (AssignStorage *) sccb;
sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
- assert(mhd);
- ram_addr_t unassign_addr = (assign_info->rn - 1) * mhd->rzm;
+ ram_addr_t unassign_addr;
MemoryRegion *sysmem = get_system_memory();
+ if (!mhd) {
+ sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
+ return;
+ }
+ unassign_addr = (assign_info->rn - 1) * mhd->rzm;
+
/* if the addr is a multiple of 256 MB */
if ((unassign_addr % MEM_SECTION_SIZE == 0) &&
(unassign_addr >= mhd->padded_ram_size)) {
/* find the specified memory region and destroy it */
mr = memory_region_find(sysmem, unassign_addr, 1).mr;
+ memory_region_unref(mr);
if (mr) {
int i;
int is_removable = 1;
}
if (is_removable) {
memory_region_del_subregion(sysmem, mr);
- object_unparent(OBJECT(mr));
- g_free(mr);
+ object_unref(OBJECT(mr));
}
}
}
}
/* Provide information about the CPU */
-static void sclp_read_cpu_info(SCCB *sccb)
+static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *sccb)
{
ReadCpuInfo *cpu_info = (ReadCpuInfo *) sccb;
CPUState *cpu;
sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
}
-static void sclp_execute(SCCB *sccb, uint32_t code)
+static void sclp_execute(SCLPDevice *sclp, SCCB *sccb, uint32_t code)
{
- SCLPEventFacility *ef = get_event_facility();
+ SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
+ SCLPEventFacility *ef = sclp->event_facility;
SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
switch (code & SCLP_CMD_CODE_MASK) {
case SCLP_CMDW_READ_SCP_INFO:
case SCLP_CMDW_READ_SCP_INFO_FORCED:
- read_SCP_info(sccb);
+ sclp_c->read_SCP_info(sclp, sccb);
break;
case SCLP_CMDW_READ_CPU_INFO:
- sclp_read_cpu_info(sccb);
+ sclp_c->read_cpu_info(sclp, sccb);
break;
case SCLP_READ_STORAGE_ELEMENT_INFO:
if (code & 0xff00) {
- read_storage_element1_info(sccb);
+ sclp_c->read_storage_element1_info(sclp, sccb);
} else {
- read_storage_element0_info(sccb);
+ sclp_c->read_storage_element0_info(sclp, sccb);
}
break;
case SCLP_ATTACH_STORAGE_ELEMENT:
- attach_storage_element(sccb, (code & 0xff00) >> 8);
+ sclp_c->attach_storage_element(sclp, sccb, (code & 0xff00) >> 8);
break;
case SCLP_ASSIGN_STORAGE:
- assign_storage(sccb);
+ sclp_c->assign_storage(sclp, sccb);
break;
case SCLP_UNASSIGN_STORAGE:
- unassign_storage(sccb);
+ sclp_c->unassign_storage(sclp, sccb);
break;
case SCLP_CMDW_CONFIGURE_PCI:
s390_pci_sclp_configure(1, sccb);
int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code)
{
+ SCLPDevice *sclp = get_sclp_device();
+ SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
int r = 0;
SCCB work_sccb;
goto out;
}
- sclp_execute((SCCB *)&work_sccb, code);
+ sclp_c->execute(sclp, (SCCB *)&work_sccb, code);
cpu_physical_memory_write(sccb, &work_sccb,
be16_to_cpu(work_sccb.h.length));
- sclp_service_interrupt(sccb);
+ sclp_c->service_interrupt(sclp, sccb);
out:
return r;
}
-void sclp_service_interrupt(uint32_t sccb)
+static void service_interrupt(SCLPDevice *sclp, uint32_t sccb)
{
- SCLPEventFacility *ef = get_event_facility();
+ SCLPEventFacility *ef = sclp->event_facility;
SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
uint32_t param = sccb & ~3;
s390_sclp_extint(param);
}
+void sclp_service_interrupt(uint32_t sccb)
+{
+ SCLPDevice *sclp = get_sclp_device();
+ SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
+
+ sclp_c->service_interrupt(sclp, sccb);
+}
+
/* qemu object creation and initialization functions */
void s390_sclp_init(void)
{
- DeviceState *dev = qdev_create(NULL, TYPE_SCLP_EVENT_FACILITY);
+ Object *new = object_new(TYPE_SCLP);
- object_property_add_child(qdev_get_machine(), TYPE_SCLP_EVENT_FACILITY,
- OBJECT(dev), NULL);
- qdev_init_nofail(dev);
+ object_property_add_child(qdev_get_machine(), TYPE_SCLP, new,
+ NULL);
+ object_unref(OBJECT(new));
+ qdev_init_nofail(DEVICE(new));
}
+static void sclp_realize(DeviceState *dev, Error **errp)
+{
+ MachineState *machine = MACHINE(qdev_get_machine());
+ SCLPDevice *sclp = SCLP(dev);
+ Error *err = NULL;
+ uint64_t hw_limit;
+ int ret;
+
+ object_property_set_bool(OBJECT(sclp->event_facility), true, "realized",
+ &err);
+ if (err) {
+ goto out;
+ }
+ /*
+ * qdev_device_add searches the sysbus for TYPE_SCLP_EVENTS_BUS. As long
+ * as we can't find a fitting bus via the qom tree, we have to add the
+ * event facility to the sysbus, so e.g. a sclp console can be created.
+ */
+ qdev_set_parent_bus(DEVICE(sclp->event_facility), sysbus_get_default());
+
+ ret = s390_set_memory_limit(machine->maxram_size, &hw_limit);
+ if (ret == -E2BIG) {
+ error_setg(&err, "qemu: host supports a maximum of %" PRIu64 " GB",
+ hw_limit >> 30);
+ } else if (ret) {
+ error_setg(&err, "qemu: setting the guest size failed");
+ }
+
+out:
+ error_propagate(errp, err);
+}
+
+static void sclp_memory_init(SCLPDevice *sclp)
+{
+ MachineState *machine = MACHINE(qdev_get_machine());
+ ram_addr_t initial_mem = machine->ram_size;
+ ram_addr_t max_mem = machine->maxram_size;
+ ram_addr_t standby_mem = max_mem - initial_mem;
+ ram_addr_t pad_mem = 0;
+ int increment_size = 20;
+
+ /* The storage increment size is a multiple of 1M and is a power of 2.
+ * The number of storage increments must be MAX_STORAGE_INCREMENTS or fewer.
+ * The variable 'increment_size' is an exponent of 2 that can be
+ * used to calculate the size (in bytes) of an increment. */
+ while ((initial_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
+ increment_size++;
+ }
+ if (machine->ram_slots) {
+ while ((standby_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
+ increment_size++;
+ }
+ }
+ sclp->increment_size = increment_size;
+
+ /* The core and standby memory areas need to be aligned with
+ * the increment size. In effect, this can cause the
+ * user-specified memory size to be rounded down to align
+ * with the nearest increment boundary. */
+ initial_mem = initial_mem >> increment_size << increment_size;
+ standby_mem = standby_mem >> increment_size << increment_size;
+
+ /* If the size of ram is not on a MEM_SECTION_SIZE boundary,
+ calculate the pad size necessary to force this boundary. */
+ if (machine->ram_slots && standby_mem) {
+ sclpMemoryHotplugDev *mhd = init_sclp_memory_hotplug_dev();
+
+ if (initial_mem % MEM_SECTION_SIZE) {
+ pad_mem = MEM_SECTION_SIZE - initial_mem % MEM_SECTION_SIZE;
+ }
+ mhd->increment_size = increment_size;
+ mhd->pad_size = pad_mem;
+ mhd->standby_mem_size = standby_mem;
+ }
+ machine->ram_size = initial_mem;
+ machine->maxram_size = initial_mem + pad_mem + standby_mem;
+ /* let's propagate the changed ram size into the global variable. */
+ ram_size = initial_mem;
+}
+
+static void sclp_init(Object *obj)
+{
+ SCLPDevice *sclp = SCLP(obj);
+ Object *new;
+
+ new = object_new(TYPE_SCLP_EVENT_FACILITY);
+ object_property_add_child(obj, TYPE_SCLP_EVENT_FACILITY, new, NULL);
+ object_unref(new);
+ sclp->event_facility = EVENT_FACILITY(new);
+
+ sclp_memory_init(sclp);
+}
+
+static void sclp_class_init(ObjectClass *oc, void *data)
+{
+ SCLPDeviceClass *sc = SCLP_CLASS(oc);
+ DeviceClass *dc = DEVICE_CLASS(oc);
+
+ dc->desc = "SCLP (Service-Call Logical Processor)";
+ dc->realize = sclp_realize;
+ dc->hotpluggable = false;
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+
+ sc->read_SCP_info = read_SCP_info;
+ sc->read_storage_element0_info = read_storage_element0_info;
+ sc->read_storage_element1_info = read_storage_element1_info;
+ sc->attach_storage_element = attach_storage_element;
+ sc->assign_storage = assign_storage;
+ sc->unassign_storage = unassign_storage;
+ sc->read_cpu_info = sclp_read_cpu_info;
+ sc->execute = sclp_execute;
+ sc->service_interrupt = service_interrupt;
+}
+
+static TypeInfo sclp_info = {
+ .name = TYPE_SCLP,
+ .parent = TYPE_DEVICE,
+ .instance_init = sclp_init,
+ .instance_size = sizeof(SCLPDevice),
+ .class_init = sclp_class_init,
+ .class_size = sizeof(SCLPDeviceClass),
+};
+
sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void)
{
DeviceState *dev;
static void register_types(void)
{
type_register_static(&sclp_memory_hotplug_dev_info);
+ type_register_static(&sclp_info);
}
type_init(register_types);
Code Review / kvmfornfv.git / blobdiff