* 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/>.
*/
#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
return 0;
}
+unsigned long kvm_arch_vcpu_id(CPUState *cpu)
+{
+ return cpu->cpu_index;
+}
+
int kvm_arch_init_vcpu(CPUState *cpu)
{
int ret = 0;
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 *cs, int level)
return 0;
}
-static int handle_priv(S390CPU *cpu, 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) {
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;
}
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 s390_cpu_restart(S390CPU *cpu)
{
- CPUS390XState *env = &cpu->env;
-
kvm_s390_interrupt(cpu, KVM_S390_RESTART, 0);
- s390_add_running_cpu(env);
+ s390_add_running_cpu(cpu);
qemu_cpu_kick(CPU(cpu));
- dprintf("DONE: SIGP cpu restart: %p\n", env);
+ dprintf("DONE: SIGP cpu restart: %p\n", &cpu->env);
return 0;
}
CPUS390XState *env = &cpu->env;
int i;
- s390_del_running_cpu(env);
+ s390_del_running_cpu(cpu);
if (kvm_vcpu_ioctl(CPU(cpu), KVM_S390_INITIAL_RESET, NULL) < 0) {
perror("cannot init reset vcpu");
}
dprintf("handle_instruction 0x%x 0x%x\n", run->s390_sieic.ipa, run->s390_sieic.ipb);
switch (ipa0) {
- case IPA0_PRIV:
- r = handle_priv(cpu, run, ipa1);
- break;
- case IPA0_DIAG:
- r = handle_diag(env, run, ipb_code);
- break;
- case IPA0_SIGP:
- r = handle_sigp(cpu, 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) {
static int handle_intercept(S390CPU *cpu)
{
- CPUS390XState *env = &cpu->env;
CPUState *cs = CPU(cpu);
struct kvm_run *run = cs->kvm_run;
int icpt_code = run->s390_sieic.icptcode;
r = handle_instruction(cpu, run);
break;
case ICPT_WAITPSW:
- if (s390_del_running_cpu(env) == 0 &&
+ 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(env) == 0) {
+ if (s390_del_running_cpu(cpu) == 0) {
qemu_system_shutdown_request();
}
r = EXCP_HALTED;
return r;
}
+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);
case KVM_EXIT_S390_RESET:
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);
break;
{
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