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Diffstat (limited to 'hw/s390x')
-rw-r--r--hw/s390x/sclp.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index cb035e909b..4e0c564c5c 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -15,6 +15,7 @@
#include "cpu.h"
#include "sysemu/kvm.h"
#include "exec/memory.h"
+#include "sysemu/sysemu.h"
#include "hw/s390x/sclp.h"
@@ -31,7 +32,26 @@ static inline S390SCLPDevice *get_event_facility(void)
static void read_SCP_info(SCCB *sccb)
{
ReadInfo *read_info = (ReadInfo *) sccb;
+ CPUState *cpu;
int shift = 0;
+ int cpu_count = 0;
+ int i = 0;
+
+ 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);
while ((ram_size >> (20 + shift)) > 65535) {
shift++;
@@ -41,6 +61,34 @@ static void read_SCP_info(SCCB *sccb)
sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
}
+/* Provide information about the CPU */
+static void sclp_read_cpu_info(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(SCCB *sccb, uint64_t code)
{
S390SCLPDevice *sdev = get_event_facility();
@@ -50,6 +98,9 @@ static void sclp_execute(SCCB *sccb, uint64_t code)
case SCLP_CMDW_READ_SCP_INFO_FORCED:
read_SCP_info(sccb);
break;
+ case SCLP_CMDW_READ_CPU_INFO:
+ sclp_read_cpu_info(sccb);
+ break;
default:
sdev->sclp_command_handler(sdev->ef, sccb, code);
break;