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-rw-r--r--hw/s390x/sclp.c310
1 files changed, 5 insertions, 305 deletions
diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index 276972b59f..047d577313 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -15,9 +15,7 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "cpu.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"
@@ -57,10 +55,8 @@ 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();
int cpu_count;
int rnsize, rnmax;
- int slots = MIN(machine->ram_slots, s390_get_memslot_count());
IplParameterBlock *ipib = s390_ipl_get_iplb();
/* CPU information */
@@ -80,36 +76,6 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
read_info->facilities = cpu_to_be64(SCLP_HAS_CPU_INFO |
SCLP_HAS_IOA_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);
- }
read_info->mha_pow = s390_get_mha_pow();
read_info->hmfai = cpu_to_be32(s390_get_hmfai());
@@ -121,7 +87,8 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
read_info->rnsize2 = cpu_to_be32(rnsize);
}
- rnmax = machine->maxram_size >> sclp->increment_size;
+ /* we don't support standby memory, maxram_size is never exposed */
+ rnmax = machine->ram_size >> sclp->increment_size;
if (rnmax < 0x10000) {
read_info->rnmax = cpu_to_be16(rnmax);
} else {
@@ -139,195 +106,6 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
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 = (be16_to_cpu(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));
- 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 = (be16_to_cpu(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)
{
@@ -390,22 +168,6 @@ static void sclp_execute(SCLPDevice *sclp, SCCB *sccb, uint32_t code)
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_IOA:
sclp_configure_io_adapter(sclp, sccb, true);
break;
@@ -540,9 +302,6 @@ 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.
@@ -552,34 +311,14 @@ static void sclp_memory_init(SCLPDevice *sclp)
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. */
+ /* The core memory area needs 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;
}
@@ -613,11 +352,6 @@ static void sclp_class_init(ObjectClass *oc, void *data)
dc->user_creatable = false;
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;
@@ -632,42 +366,8 @@ static TypeInfo sclp_info = {
.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);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-22 05:47:25 +0000