* QEMU S390x KVM implementation
*
* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
+ * Copyright IBM Corp. 2012
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Lesser General Public
+ * Contributions after 2012-10-29 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ *
+ * You should have received a copy of the GNU (Lesser) General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <asm/ptrace.h>
#include "qemu-common.h"
-#include "qemu-timer.h"
-#include "sysemu.h"
-#include "kvm.h"
+#include "qemu/timer.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/kvm.h"
#include "cpu.h"
-#include "device_tree.h"
+#include "sysemu/device_tree.h"
/* #define DEBUG_KVM */
#define IPA0_DIAG 0x8300
#define IPA0_SIGP 0xae00
-#define IPA0_PRIV 0xb200
+#define IPA0_B2 0xb200
+#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 DIAG_KVM_HYPERCALL 0x500
#define DIAG_KVM_BREAKPOINT 0x501
#define SIGP_STORE_STATUS_ADDR 0x0e
#define SIGP_SET_ARCH 0x12
-#define SCLP_CMDW_READ_SCP_INFO 0x00020001
-#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
-
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_LAST_INFO
};
+static int cap_sync_regs;
+
int kvm_arch_init(KVMState *s)
{
+ cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
return 0;
}
-int kvm_arch_init_vcpu(CPUState *env)
+unsigned long kvm_arch_vcpu_id(CPUState *cpu)
+{
+ return cpu->cpu_index;
+}
+
+int kvm_arch_init_vcpu(CPUState *cpu)
{
int ret = 0;
- if (kvm_vcpu_ioctl(env, KVM_S390_INITIAL_RESET, NULL) < 0) {
+ if (kvm_vcpu_ioctl(cpu, KVM_S390_INITIAL_RESET, NULL) < 0) {
perror("cannot init reset vcpu");
}
return ret;
}
-void kvm_arch_reset_vcpu(CPUState *env)
+void kvm_arch_reset_vcpu(CPUState *cpu)
{
- /* FIXME: add code to reset vcpu. */
+ /* The initial reset call is needed here to reset in-kernel
+ * vcpu data that we can't access directly from QEMU
+ * (i.e. with older kernels which don't support sync_regs/ONE_REG).
+ * Before this ioctl cpu_synchronize_state() is called in common kvm
+ * code (kvm-all) */
+ if (kvm_vcpu_ioctl(cpu, KVM_S390_INITIAL_RESET, NULL)) {
+ perror("Can't reset vcpu\n");
+ }
}
-int kvm_arch_put_registers(CPUState *env, int level)
+int kvm_arch_put_registers(CPUState *cs, int level)
{
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
+ struct kvm_sregs sregs;
struct kvm_regs regs;
int ret;
int i;
- ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s);
- if (ret < 0) {
- return ret;
- }
+ /* always save the PSW and the GPRS*/
+ cs->kvm_run->psw_addr = env->psw.addr;
+ cs->kvm_run->psw_mask = env->psw.mask;
- for (i = 0; i < 16; i++) {
- regs.gprs[i] = env->regs[i];
+ if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) {
+ for (i = 0; i < 16; i++) {
+ cs->kvm_run->s.regs.gprs[i] = env->regs[i];
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
+ }
+ } else {
+ for (i = 0; i < 16; i++) {
+ regs.gprs[i] = env->regs[i];
+ }
+ ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
+ if (ret < 0) {
+ return ret;
+ }
}
- ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, ®s);
- if (ret < 0) {
- return ret;
+ /* Do we need to save more than that? */
+ if (level == KVM_PUT_RUNTIME_STATE) {
+ return 0;
}
- env->kvm_run->psw_addr = env->psw.addr;
- env->kvm_run->psw_mask = env->psw.mask;
+ if (cap_sync_regs &&
+ cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
+ cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
+ for (i = 0; i < 16; i++) {
+ cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
+ cs->kvm_run->s.regs.crs[i] = env->cregs[i];
+ }
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
+ } else {
+ for (i = 0; i < 16; i++) {
+ sregs.acrs[i] = env->aregs[i];
+ sregs.crs[i] = env->cregs[i];
+ }
+ ret = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
+ if (ret < 0) {
+ return ret;
+ }
+ }
- return ret;
+ /* Finally the prefix */
+ if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
+ cs->kvm_run->s.regs.prefix = env->psa;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
+ } else {
+ /* prefix is only supported via sync regs */
+ }
+ return 0;
}
-int kvm_arch_get_registers(CPUState *env)
+int kvm_arch_get_registers(CPUState *cs)
{
- int ret;
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
+ struct kvm_sregs sregs;
struct kvm_regs regs;
+ int ret;
int i;
- ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s);
- if (ret < 0) {
- return ret;
+ /* get the PSW */
+ env->psw.addr = cs->kvm_run->psw_addr;
+ env->psw.mask = cs->kvm_run->psw_mask;
+
+ /* the GPRS */
+ if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) {
+ for (i = 0; i < 16; i++) {
+ env->regs[i] = cs->kvm_run->s.regs.gprs[i];
+ }
+ } else {
+ ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
+ if (ret < 0) {
+ return ret;
+ }
+ for (i = 0; i < 16; i++) {
+ env->regs[i] = regs.gprs[i];
+ }
}
- for (i = 0; i < 16; i++) {
- env->regs[i] = regs.gprs[i];
+ /* The ACRS and CRS */
+ if (cap_sync_regs &&
+ cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
+ cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
+ for (i = 0; i < 16; i++) {
+ env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
+ env->cregs[i] = cs->kvm_run->s.regs.crs[i];
+ }
+ } else {
+ ret = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
+ if (ret < 0) {
+ return ret;
+ }
+ for (i = 0; i < 16; i++) {
+ env->aregs[i] = sregs.acrs[i];
+ env->cregs[i] = sregs.crs[i];
+ }
}
- env->psw.addr = env->kvm_run->psw_addr;
- env->psw.mask = env->kvm_run->psw_mask;
+ /* Finally the prefix */
+ if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
+ env->psa = cs->kvm_run->s.regs.prefix;
+ } else {
+ /* no prefix without sync regs */
+ }
return 0;
}
-int kvm_arch_insert_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp)
+/*
+ * Legacy layout for s390:
+ * Older S390 KVM requires the topmost vma of the RAM to be
+ * smaller than an system defined value, which is at least 256GB.
+ * Larger systems have larger values. We put the guest between
+ * the end of data segment (system break) and this value. We
+ * use 32GB as a base to have enough room for the system break
+ * to grow. We also have to use MAP parameters that avoid
+ * read-only mapping of guest pages.
+ */
+static void *legacy_s390_alloc(ram_addr_t size)
+{
+ void *mem;
+
+ mem = mmap((void *) 0x800000000ULL, size,
+ PROT_EXEC|PROT_READ|PROT_WRITE,
+ MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
+ if (mem == MAP_FAILED) {
+ fprintf(stderr, "Allocating RAM failed\n");
+ abort();
+ }
+ return mem;
+}
+
+void *kvm_arch_vmalloc(ram_addr_t size)
{
+ /* Can we use the standard allocation ? */
+ if (kvm_check_extension(kvm_state, KVM_CAP_S390_GMAP) &&
+ kvm_check_extension(kvm_state, KVM_CAP_S390_COW)) {
+ return NULL;
+ } else {
+ return legacy_s390_alloc(size);
+ }
+}
+
+int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
+{
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 4, 0) ||
return 0;
}
-int kvm_arch_remove_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp)
+int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
{
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
uint8_t t[4];
static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
return 0;
}
-void kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
+void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
{
}
-void kvm_arch_post_run(CPUState *env, struct kvm_run *run)
+void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run)
{
}
-int kvm_arch_process_async_events(CPUState *env)
+int kvm_arch_process_async_events(CPUState *cs)
{
- return env->halted;
+ S390CPU *cpu = S390_CPU(cs);
+ return cpu->env.halted;
}
-void kvm_s390_interrupt_internal(CPUState *env, int type, uint32_t parm,
+void kvm_s390_interrupt_internal(S390CPU *cpu, int type, uint32_t parm,
uint64_t parm64, int vm)
{
+ CPUState *cs = CPU(cpu);
struct kvm_s390_interrupt kvmint;
int r;
- if (!env->kvm_state) {
+ if (!cs->kvm_state) {
return;
}
- env->halted = 0;
- env->exception_index = -1;
- qemu_cpu_kick(env);
-
kvmint.type = type;
kvmint.parm = parm;
kvmint.parm64 = parm64;
if (vm) {
- r = kvm_vm_ioctl(env->kvm_state, KVM_S390_INTERRUPT, &kvmint);
+ r = kvm_vm_ioctl(cs->kvm_state, KVM_S390_INTERRUPT, &kvmint);
} else {
- r = kvm_vcpu_ioctl(env, KVM_S390_INTERRUPT, &kvmint);
+ r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
}
if (r < 0) {
}
}
-void kvm_s390_virtio_irq(CPUState *env, int config_change, uint64_t token)
+void kvm_s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token)
{
- kvm_s390_interrupt_internal(env, KVM_S390_INT_VIRTIO, config_change,
+ kvm_s390_interrupt_internal(cpu, KVM_S390_INT_VIRTIO, config_change,
token, 1);
}
-void kvm_s390_interrupt(CPUState *env, int type, uint32_t code)
+void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code)
{
- kvm_s390_interrupt_internal(env, type, code, 0, 0);
+ kvm_s390_interrupt_internal(cpu, type, code, 0, 0);
}
-static void enter_pgmcheck(CPUState *env, uint16_t code)
+static void enter_pgmcheck(S390CPU *cpu, uint16_t code)
{
- kvm_s390_interrupt(env, KVM_S390_PROGRAM_INT, code);
+ kvm_s390_interrupt(cpu, KVM_S390_PROGRAM_INT, code);
}
-static inline void setcc(CPUState *env, uint64_t cc)
+static inline void setcc(S390CPU *cpu, uint64_t cc)
{
- env->kvm_run->psw_mask &= ~(3ull << 44);
- env->kvm_run->psw_mask |= (cc & 3) << 44;
+ CPUS390XState *env = &cpu->env;
+ CPUState *cs = CPU(cpu);
+
+ cs->kvm_run->psw_mask &= ~(3ull << 44);
+ cs->kvm_run->psw_mask |= (cc & 3) << 44;
env->psw.mask &= ~(3ul << 44);
env->psw.mask |= (cc & 3) << 44;
}
-static int kvm_sclp_service_call(CPUState *env, struct kvm_run *run,
+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;
int r = 0;
sccb = env->regs[ipbh0 & 0xf];
code = env->regs[(ipbh0 & 0xf0) >> 4];
- r = sclp_service_call(env, sccb, code);
- if (r) {
- setcc(env, 3);
+ r = sclp_service_call(sccb, code);
+ if (r < 0) {
+ enter_pgmcheck(cpu, -r);
}
+ setcc(cpu, r);
return 0;
}
-static int handle_priv(CPUState *env, struct kvm_run *run, uint8_t ipa1)
+static int kvm_handle_css_inst(S390CPU *cpu, struct kvm_run *run,
+ uint8_t ipa0, uint8_t ipa1, uint8_t ipb)
+{
+ int r = 0;
+ int no_cc = 0;
+ CPUS390XState *env = &cpu->env;
+
+ if (ipa0 != 0xb2) {
+ /* Not handled for now. */
+ return -1;
+ }
+ cpu_synchronize_state(env);
+ switch (ipa1) {
+ case PRIV_XSCH:
+ r = ioinst_handle_xsch(env, env->regs[1]);
+ break;
+ case PRIV_CSCH:
+ r = ioinst_handle_csch(env, env->regs[1]);
+ break;
+ case PRIV_HSCH:
+ r = ioinst_handle_hsch(env, env->regs[1]);
+ break;
+ case PRIV_MSCH:
+ r = ioinst_handle_msch(env, env->regs[1], run->s390_sieic.ipb);
+ break;
+ case PRIV_SSCH:
+ r = ioinst_handle_ssch(env, env->regs[1], run->s390_sieic.ipb);
+ break;
+ case PRIV_STCRW:
+ r = ioinst_handle_stcrw(env, run->s390_sieic.ipb);
+ break;
+ case PRIV_STSCH:
+ r = ioinst_handle_stsch(env, env->regs[1], run->s390_sieic.ipb);
+ break;
+ case PRIV_TSCH:
+ /* We should only get tsch via KVM_EXIT_S390_TSCH. */
+ fprintf(stderr, "Spurious tsch intercept\n");
+ break;
+ case PRIV_CHSC:
+ r = ioinst_handle_chsc(env, run->s390_sieic.ipb);
+ break;
+ case PRIV_TPI:
+ /* This should have been handled by kvm already. */
+ fprintf(stderr, "Spurious tpi intercept\n");
+ break;
+ case PRIV_SCHM:
+ no_cc = 1;
+ r = ioinst_handle_schm(env, env->regs[1], env->regs[2],
+ run->s390_sieic.ipb);
+ break;
+ case PRIV_RSCH:
+ r = ioinst_handle_rsch(env, env->regs[1]);
+ break;
+ case PRIV_RCHP:
+ r = ioinst_handle_rchp(env, env->regs[1]);
+ break;
+ case PRIV_STCPS:
+ /* We do not provide this instruction, it is suppressed. */
+ no_cc = 1;
+ r = 0;
+ break;
+ case PRIV_SAL:
+ no_cc = 1;
+ r = ioinst_handle_sal(env, env->regs[1]);
+ break;
+ default:
+ r = -1;
+ break;
+ }
+
+ if (r >= 0) {
+ if (!no_cc) {
+ setcc(cpu, r);
+ }
+ r = 0;
+ } else if (r < -1) {
+ r = 0;
+ }
+ return r;
+}
+
+static int is_ioinst(uint8_t ipa0, uint8_t ipa1, uint8_t ipb)
+{
+ int ret = 0;
+ uint16_t ipa = (ipa0 << 8) | ipa1;
+
+ switch (ipa) {
+ case IPA0_B2 | PRIV_CSCH:
+ case IPA0_B2 | PRIV_HSCH:
+ case IPA0_B2 | PRIV_MSCH:
+ case IPA0_B2 | PRIV_SSCH:
+ case IPA0_B2 | PRIV_STSCH:
+ case IPA0_B2 | PRIV_TPI:
+ case IPA0_B2 | PRIV_SAL:
+ case IPA0_B2 | PRIV_RSCH:
+ case IPA0_B2 | PRIV_STCRW:
+ case IPA0_B2 | PRIV_STCPS:
+ case IPA0_B2 | PRIV_RCHP:
+ case IPA0_B2 | PRIV_SCHM:
+ case IPA0_B2 | PRIV_CHSC:
+ case IPA0_B2 | PRIV_SIGA:
+ case IPA0_B2 | PRIV_XSCH:
+ case IPA0_B9 | PRIV_EQBS:
+ case IPA0_EB | PRIV_SQBS:
+ ret = 1;
+ break;
+ }
+
+ return ret;
+}
+
+static int handle_priv(S390CPU *cpu, struct kvm_run *run,
+ uint8_t ipa0, 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(env, run, ipbh0);
+ r = kvm_sclp_service_call(cpu, run, ipbh0);
break;
default:
- dprintf("KVM: unknown PRIV: 0x%x\n", ipa1);
- r = -1;
+ if (is_ioinst(ipa0, ipa1, ipb)) {
+ r = kvm_handle_css_inst(cpu, run, ipa0, ipa1, ipb);
+ if (r == -1) {
+ setcc(cpu, 3);
+ r = 0;
+ }
+ } else {
+ dprintf("KVM: unknown PRIV: 0x%x\n", ipa1);
+ r = -1;
+ }
break;
}
return r;
}
-static int handle_hypercall(CPUState *env, struct kvm_run *run)
+static int handle_hypercall(CPUS390XState *env, struct kvm_run *run)
{
cpu_synchronize_state(env);
- env->regs[2] = s390_virtio_hypercall(env, env->regs[2], env->regs[1]);
+ env->regs[2] = s390_virtio_hypercall(env);
return 0;
}
-static int handle_diag(CPUState *env, struct kvm_run *run, int ipb_code)
+static int handle_diag(CPUS390XState *env, struct kvm_run *run, int ipb_code)
{
int r = 0;
return r;
}
-static int s390_cpu_restart(CPUState *env)
+static int s390_cpu_restart(S390CPU *cpu)
{
- kvm_s390_interrupt(env, KVM_S390_RESTART, 0);
- env->halted = 0;
- env->exception_index = -1;
- qemu_cpu_kick(env);
- dprintf("DONE: SIGP cpu restart: %p\n", env);
+ kvm_s390_interrupt(cpu, KVM_S390_RESTART, 0);
+ s390_add_running_cpu(cpu);
+ qemu_cpu_kick(CPU(cpu));
+ dprintf("DONE: SIGP cpu restart: %p\n", &cpu->env);
return 0;
}
-static int s390_store_status(CPUState *env, uint32_t parameter)
+static int s390_store_status(CPUS390XState *env, uint32_t parameter)
{
/* XXX */
fprintf(stderr, "XXX SIGP store status\n");
return -1;
}
-static int s390_cpu_initial_reset(CPUState *env)
+static int s390_cpu_initial_reset(S390CPU *cpu)
{
+ CPUS390XState *env = &cpu->env;
int i;
- if (kvm_vcpu_ioctl(env, KVM_S390_INITIAL_RESET, NULL) < 0) {
+ s390_del_running_cpu(cpu);
+ if (kvm_vcpu_ioctl(CPU(cpu), KVM_S390_INITIAL_RESET, NULL) < 0) {
perror("cannot init reset vcpu");
}
return 0;
}
-static int handle_sigp(CPUState *env, struct kvm_run *run, uint8_t ipa1)
+static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
+ CPUS390XState *env = &cpu->env;
uint8_t order_code;
uint32_t parameter;
uint16_t cpu_addr;
uint8_t t;
int r = -1;
- CPUState *target_env;
+ S390CPU *target_cpu;
+ CPUS390XState *target_env;
cpu_synchronize_state(env);
parameter = env->regs[t] & 0x7ffffe00;
cpu_addr = env->regs[ipa1 & 0x0f];
- target_env = s390_cpu_addr2state(cpu_addr);
- if (!target_env) {
+ target_cpu = s390_cpu_addr2state(cpu_addr);
+ if (target_cpu == NULL) {
goto out;
}
+ target_env = &target_cpu->env;
switch (order_code) {
case SIGP_RESTART:
- r = s390_cpu_restart(target_env);
+ r = s390_cpu_restart(target_cpu);
break;
case SIGP_STORE_STATUS_ADDR:
r = s390_store_status(target_env, parameter);
/* make the caller panic */
return -1;
case SIGP_INITIAL_CPU_RESET:
- r = s390_cpu_initial_reset(target_env);
+ r = s390_cpu_initial_reset(target_cpu);
break;
default:
fprintf(stderr, "KVM: unknown SIGP: 0x%x\n", order_code);
}
out:
- setcc(env, r ? 3 : 0);
+ setcc(cpu, r ? 3 : 0);
return 0;
}
-static int handle_instruction(CPUState *env, struct kvm_run *run)
+static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
{
+ CPUS390XState *env = &cpu->env;
unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
int ipb_code = (run->s390_sieic.ipb & 0x0fff0000) >> 16;
dprintf("handle_instruction 0x%x 0x%x\n", run->s390_sieic.ipa, run->s390_sieic.ipb);
switch (ipa0) {
- case IPA0_PRIV:
- r = handle_priv(env, run, ipa1);
- break;
- case IPA0_DIAG:
- r = handle_diag(env, run, ipb_code);
- break;
- case IPA0_SIGP:
- r = handle_sigp(env, run, ipa1);
- break;
+ case IPA0_B2:
+ case IPA0_B9:
+ case IPA0_EB:
+ r = handle_priv(cpu, run, ipa0 >> 8, ipa1);
+ break;
+ case IPA0_DIAG:
+ r = handle_diag(env, run, ipb_code);
+ break;
+ case IPA0_SIGP:
+ r = handle_sigp(cpu, run, ipa1);
+ break;
}
if (r < 0) {
- enter_pgmcheck(env, 0x0001);
+ enter_pgmcheck(cpu, 0x0001);
}
return 0;
}
-static int handle_intercept(CPUState *env)
+static bool is_special_wait_psw(CPUState *cs)
+{
+ /* signal quiesce */
+ return cs->kvm_run->psw_addr == 0xfffUL;
+}
+
+static int handle_intercept(S390CPU *cpu)
{
- struct kvm_run *run = env->kvm_run;
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
int icpt_code = run->s390_sieic.icptcode;
int r = 0;
dprintf("intercept: 0x%x (at 0x%lx)\n", icpt_code,
- (long)env->kvm_run->psw_addr);
+ (long)cs->kvm_run->psw_addr);
switch (icpt_code) {
case ICPT_INSTRUCTION:
- r = handle_instruction(env, run);
+ r = handle_instruction(cpu, run);
break;
case ICPT_WAITPSW:
- /* XXX What to do on system shutdown? */
- env->halted = 1;
- env->exception_index = EXCP_HLT;
+ if (s390_del_running_cpu(cpu) == 0 &&
+ is_special_wait_psw(cs)) {
+ qemu_system_shutdown_request();
+ }
+ r = EXCP_HALTED;
+ break;
+ case ICPT_CPU_STOP:
+ if (s390_del_running_cpu(cpu) == 0) {
+ qemu_system_shutdown_request();
+ }
+ r = EXCP_HALTED;
break;
case ICPT_SOFT_INTERCEPT:
fprintf(stderr, "KVM unimplemented icpt SOFT\n");
exit(1);
break;
- case ICPT_CPU_STOP:
- qemu_system_shutdown_request();
- break;
case ICPT_IO:
fprintf(stderr, "KVM unimplemented icpt IO\n");
exit(1);
return r;
}
-int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run)
+static int handle_tsch(S390CPU *cpu)
+{
+ CPUS390XState *env = &cpu->env;
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
+ int ret;
+
+ cpu_synchronize_state(env);
+ ret = ioinst_handle_tsch(env, env->regs[1], run->s390_tsch.ipb);
+ if (ret >= 0) {
+ /* Success; set condition code. */
+ setcc(cpu, ret);
+ ret = 0;
+ } else if (ret < -1) {
+ /*
+ * Failure.
+ * If an I/O interrupt had been dequeued, we have to reinject it.
+ */
+ if (run->s390_tsch.dequeued) {
+ uint16_t subchannel_id = run->s390_tsch.subchannel_id;
+ uint16_t subchannel_nr = run->s390_tsch.subchannel_nr;
+ uint32_t io_int_parm = run->s390_tsch.io_int_parm;
+ uint32_t io_int_word = run->s390_tsch.io_int_word;
+ uint32_t type = ((subchannel_id & 0xff00) << 24) |
+ ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
+
+ kvm_s390_interrupt_internal(cpu, type,
+ ((uint32_t)subchannel_id << 16)
+ | subchannel_nr,
+ ((uint64_t)io_int_parm << 32)
+ | io_int_word, 1);
+ }
+ ret = 0;
+ }
+ return ret;
+}
+
+int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
{
+ S390CPU *cpu = S390_CPU(cs);
int ret = 0;
switch (run->exit_reason) {
case KVM_EXIT_S390_SIEIC:
- ret = handle_intercept(env);
+ ret = handle_intercept(cpu);
break;
case KVM_EXIT_S390_RESET:
- fprintf(stderr, "RESET not implemented\n");
- exit(1);
+ qemu_system_reset_request();
+ break;
+ case KVM_EXIT_S390_TSCH:
+ ret = handle_tsch(cpu);
break;
default:
fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
if (ret == 0) {
ret = EXCP_INTERRUPT;
- } else if (ret > 0) {
- ret = 0;
}
return ret;
}
-bool kvm_arch_stop_on_emulation_error(CPUState *env)
+bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
{
return true;
}
-int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr)
+int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
{
return 1;
}
{
return 1;
}
+
+void kvm_s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id,
+ uint16_t subchannel_nr, uint32_t io_int_parm,
+ uint32_t io_int_word)
+{
+ uint32_t type;
+
+ type = ((subchannel_id & 0xff00) << 24) |
+ ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
+ kvm_s390_interrupt_internal(cpu, type,
+ ((uint32_t)subchannel_id << 16) | subchannel_nr,
+ ((uint64_t)io_int_parm << 32) | io_int_word, 1);
+}
+
+void kvm_s390_crw_mchk(S390CPU *cpu)
+{
+ kvm_s390_interrupt_internal(cpu, KVM_S390_MCHK, 1 << 28,
+ 0x00400f1d40330000, 1);
+}
+
+void kvm_s390_enable_css_support(S390CPU *cpu)
+{
+ struct kvm_enable_cap cap = {};
+ int r;
+
+ /* Activate host kernel channel subsystem support. */
+ cap.cap = KVM_CAP_S390_CSS_SUPPORT;
+ r = kvm_vcpu_ioctl(CPU(cpu), KVM_ENABLE_CAP, &cap);
+ assert(r == 0);
+}
projects / qemu.git / blobdiff