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-rw-r--r--qemu/hw/s390x/sclp.c618
1 files changed, 0 insertions, 618 deletions
diff --git a/qemu/hw/s390x/sclp.c b/qemu/hw/s390x/sclp.c
deleted file mode 100644
index 85dbe1b60..000000000
--- a/qemu/hw/s390x/sclp.c
+++ /dev/null
@@ -1,618 +0,0 @@
-/*
- * SCLP Support
- *
- * Copyright IBM, Corp. 2012
- *
- * Authors:
- * Christian Borntraeger <borntraeger@de.ibm.com>
- * Heinz Graalfs <graalfs@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 "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 "hw/boards.h"
-#include "hw/s390x/sclp.h"
-#include "hw/s390x/event-facility.h"
-#include "hw/s390x/s390-pci-bus.h"
-
-static inline SCLPDevice *get_sclp_device(void)
-{
- return SCLP(object_resolve_path_type("", TYPE_SCLP, NULL));
-}
-
-/* Provide information about the configuration, CPUs and storage */
-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 rnsize, rnmax;
- int slots = MIN(machine->ram_slots, s390_get_memslot_count(kvm_state));
-
- CPU_FOREACH(cpu) {
- cpu_count++;
- }
-
- /* CPU information */
- read_info->entries_cpu = cpu_to_be16(cpu_count);
- read_info->offset_cpu = cpu_to_be16(offsetof(ReadInfo, entries));
- read_info->highest_cpu = cpu_to_be16(max_cpus);
-
- for (i = 0; i < cpu_count; i++) {
- read_info->entries[i].address = i;
- read_info->entries[i].type = 0;
- }
-
- read_info->facilities = cpu_to_be64(SCLP_HAS_CPU_INFO |
- SCLP_HAS_PCI_RECONFIG);
-
- /* Memory Hotplug is only supported for the ccw machine type */
- if (mhd) {
- mhd->standby_subregion_size = MEM_SECTION_SIZE;
- /* Deduct the memory slot already used for core */
- if (slots > 0) {
- while ((mhd->standby_subregion_size * (slots - 1)
- < mhd->standby_mem_size)) {
- mhd->standby_subregion_size = mhd->standby_subregion_size << 1;
- }
- }
- /*
- * Initialize mapping of guest standby memory sections indicating which
- * are and are not online. Assume all standby memory begins offline.
- */
- if (mhd->standby_state_map == 0) {
- if (mhd->standby_mem_size % mhd->standby_subregion_size) {
- mhd->standby_state_map = g_malloc0((mhd->standby_mem_size /
- mhd->standby_subregion_size + 1) *
- (mhd->standby_subregion_size /
- MEM_SECTION_SIZE));
- } else {
- mhd->standby_state_map = g_malloc0(mhd->standby_mem_size /
- MEM_SECTION_SIZE);
- }
- }
- mhd->padded_ram_size = ram_size + mhd->pad_size;
- mhd->rzm = 1 << mhd->increment_size;
-
- read_info->facilities |= cpu_to_be64(SCLP_FC_ASSIGN_ATTACH_READ_STOR);
- }
-
- rnsize = 1 << (sclp->increment_size - 20);
- if (rnsize <= 128) {
- read_info->rnsize = rnsize;
- } else {
- read_info->rnsize = 0;
- 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 {
- read_info->rnmax = cpu_to_be16(0);
- read_info->rnmax2 = cpu_to_be64(rnmax);
- }
-
- sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
-}
-
-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();
-
- 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);
- return;
- }
-
- /* Return information regarding core memory */
- storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
- assigned = ram_size >> mhd->increment_size;
- storage_info->assigned = cpu_to_be16(assigned);
-
- for (i = 0; i < assigned; i++) {
- storage_info->entries[i] = cpu_to_be32(subincrement_id);
- subincrement_id += SCLP_INCREMENT_UNIT;
- }
- sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
-}
-
-static void read_storage_element1_info(SCLPDevice *sclp, SCCB *sccb)
-{
- ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
- sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
-
- 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);
- return;
- }
-
- /* Return information regarding standby memory */
- storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
- storage_info->assigned = cpu_to_be16(mhd->standby_mem_size >>
- mhd->increment_size);
- storage_info->standby = cpu_to_be16(mhd->standby_mem_size >>
- mhd->increment_size);
- sccb->h.response_code = cpu_to_be16(SCLP_RC_STANDBY_READ_COMPLETION);
-}
-
-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();
-
- 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);
- return;
- }
-
- assigned = mhd->standby_mem_size >> mhd->increment_size;
- attach_info->assigned = cpu_to_be16(assigned);
- subincrement_id = ((ram_size >> mhd->increment_size) << 16)
- + SCLP_STARTING_SUBINCREMENT_ID;
- for (i = 0; i < assigned; i++) {
- attach_info->entries[i] = cpu_to_be32(subincrement_id);
- subincrement_id += SCLP_INCREMENT_UNIT;
- }
- sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
-}
-
-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();
- 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);
-
- /* offset to align to standby_subregion_size for allocation */
- ram_addr_t offset = assign_addr -
- (assign_addr - mhd->padded_ram_size)
- % mhd->standby_subregion_size;
-
- /* strlen("standby.ram") + 4 (Max of KVM_MEMORY_SLOTS) + NULL */
- char id[16];
- snprintf(id, 16, "standby.ram%d",
- (int)((offset - mhd->padded_ram_size) /
- mhd->standby_subregion_size) + 1);
-
- /* Allocate a subregion of the calculated standby_subregion_size */
- if (offset + mhd->standby_subregion_size >
- mhd->padded_ram_size + mhd->standby_mem_size) {
- this_subregion_size = mhd->padded_ram_size +
- mhd->standby_mem_size - offset;
- } else {
- this_subregion_size = mhd->standby_subregion_size;
- }
-
- 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);
- }
- /* The specified subregion is no longer in standby */
- mhd->standby_state_map[(assign_addr - mhd->padded_ram_size)
- / MEM_SECTION_SIZE] = 1;
- }
- sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
-}
-
-static void unassign_storage(SCLPDevice *sclp, SCCB *sccb)
-{
- MemoryRegion *mr = NULL;
- AssignStorage *assign_info = (AssignStorage *) sccb;
- sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
- 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)) {
- mhd->standby_state_map[(unassign_addr -
- mhd->padded_ram_size) / MEM_SECTION_SIZE] = 0;
-
- /* 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;
- ram_addr_t map_offset = (unassign_addr - mhd->padded_ram_size -
- (unassign_addr - mhd->padded_ram_size)
- % mhd->standby_subregion_size);
- /* Mark all affected subregions as 'standby' once again */
- for (i = 0;
- i < (mhd->standby_subregion_size / MEM_SECTION_SIZE);
- i++) {
-
- if (mhd->standby_state_map[i + map_offset / MEM_SECTION_SIZE]) {
- is_removable = 0;
- break;
- }
- }
- if (is_removable) {
- memory_region_del_subregion(sysmem, mr);
- object_unref(OBJECT(mr));
- }
- }
- }
- sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
-}
-
-/* Provide information about the CPU */
-static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *sccb)
-{
- ReadCpuInfo *cpu_info = (ReadCpuInfo *) sccb;
- CPUState *cpu;
- int cpu_count = 0;
- int i = 0;
-
- CPU_FOREACH(cpu) {
- cpu_count++;
- }
-
- cpu_info->nr_configured = cpu_to_be16(cpu_count);
- cpu_info->offset_configured = cpu_to_be16(offsetof(ReadCpuInfo, entries));
- cpu_info->nr_standby = cpu_to_be16(0);
-
- /* The standby offset is 16-byte for each CPU */
- cpu_info->offset_standby = cpu_to_be16(cpu_info->offset_configured
- + cpu_info->nr_configured*sizeof(CPUEntry));
-
- for (i = 0; i < cpu_count; i++) {
- cpu_info->entries[i].address = i;
- cpu_info->entries[i].type = 0;
- }
-
- sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
-}
-
-static void sclp_execute(SCLPDevice *sclp, SCCB *sccb, uint32_t code)
-{
- 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:
- sclp_c->read_SCP_info(sclp, sccb);
- break;
- case SCLP_CMDW_READ_CPU_INFO:
- sclp_c->read_cpu_info(sclp, sccb);
- break;
- case SCLP_READ_STORAGE_ELEMENT_INFO:
- if (code & 0xff00) {
- sclp_c->read_storage_element1_info(sclp, sccb);
- } else {
- sclp_c->read_storage_element0_info(sclp, sccb);
- }
- break;
- case SCLP_ATTACH_STORAGE_ELEMENT:
- sclp_c->attach_storage_element(sclp, sccb, (code & 0xff00) >> 8);
- break;
- case SCLP_ASSIGN_STORAGE:
- sclp_c->assign_storage(sclp, sccb);
- break;
- case SCLP_UNASSIGN_STORAGE:
- sclp_c->unassign_storage(sclp, sccb);
- break;
- case SCLP_CMDW_CONFIGURE_PCI:
- s390_pci_sclp_configure(1, sccb);
- break;
- case SCLP_CMDW_DECONFIGURE_PCI:
- s390_pci_sclp_configure(0, sccb);
- break;
- default:
- efc->command_handler(ef, sccb, code);
- break;
- }
-}
-
-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;
-
- 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 & ~0x1fffUL) == 0 || (sccb & ~0x1fffUL) == env->psa
- || (sccb & ~0x7ffffff8UL) != 0) {
- r = -PGM_SPECIFICATION;
- goto out;
- }
-
- /*
- * we want to work on a private copy of the sccb, to prevent guests
- * from playing dirty tricks by modifying the memory content after
- * the host has checked the values
- */
- cpu_physical_memory_read(sccb, &work_sccb, sccb_len);
-
- /* Valid sccb sizes */
- if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader) ||
- be16_to_cpu(work_sccb.h.length) > SCCB_SIZE) {
- r = -PGM_SPECIFICATION;
- goto out;
- }
-
- sclp_c->execute(sclp, (SCCB *)&work_sccb, code);
-
- cpu_physical_memory_write(sccb, &work_sccb,
- be16_to_cpu(work_sccb.h.length));
-
- sclp_c->service_interrupt(sclp, sccb);
-
-out:
- return r;
-}
-
-static void service_interrupt(SCLPDevice *sclp, uint32_t sccb)
-{
- SCLPEventFacility *ef = sclp->event_facility;
- SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
-
- uint32_t param = sccb & ~3;
-
- /* Indicate whether an event is still pending */
- param |= efc->event_pending(ef) ? 1 : 0;
-
- if (!param) {
- /* No need to send an interrupt, there's nothing to be notified about */
- return;
- }
- 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)
-{
- Object *new = object_new(TYPE_SCLP);
-
- 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;
- dev = qdev_create(NULL, TYPE_SCLP_MEMORY_HOTPLUG_DEV);
- object_property_add_child(qdev_get_machine(),
- TYPE_SCLP_MEMORY_HOTPLUG_DEV,
- OBJECT(dev), NULL);
- qdev_init_nofail(dev);
- return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
- TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
-}
-
-sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void)
-{
- return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
- TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
-}
-
-static void sclp_memory_hotplug_dev_class_init(ObjectClass *klass,
- void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- set_bit(DEVICE_CATEGORY_MISC, dc->categories);
-}
-
-static TypeInfo sclp_memory_hotplug_dev_info = {
- .name = TYPE_SCLP_MEMORY_HOTPLUG_DEV,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(sclpMemoryHotplugDev),
- .class_init = sclp_memory_hotplug_dev_class_init,
-};
-
-static void register_types(void)
-{
- type_register_static(&sclp_memory_hotplug_dev_info);
- type_register_static(&sclp_info);
-}
-type_init(register_types);