void ioinst_handle_msch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra)
{
int cssid, ssid, schid, m;
SubchDev *sch;
SCHIB schib;
uint64_t addr;
CPUS390XState *env = &cpu->env;
uint8_t ar;
addr = decode_basedisp_s(env, ipb, &ar);
if (addr & 3) {
s390_program_interrupt(env, PGM_SPECIFICATION, 4, ra);
return;
}
if (s390_cpu_virt_mem_read(cpu, addr, ar, &schib, sizeof(schib))) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid) ||
!ioinst_schib_valid(&schib)) {
s390_program_interrupt(env, PGM_OPERAND, 4, ra);
return;
}
trace_ioinst_sch_id("msch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (!sch || !css_subch_visible(sch)) {
setcc(cpu, 3);
return;
}
setcc(cpu, css_do_msch(sch, &schib));
}
int ioinst_handle_msch(CPUS390XState *env, uint64_t reg1, uint32_t ipb)
{
int cssid, ssid, schid, m;
SubchDev *sch;
SCHIB *schib;
uint64_t addr;
int ret = -ENODEV;
int cc;
hwaddr len = sizeof(*schib);
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
schib = s390_cpu_physical_memory_map(env, addr, &len, 0);
if (!schib || len != sizeof(*schib)) {
program_interrupt(env, PGM_ADDRESSING, 2);
cc = -EIO;
goto out;
}
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid) ||
!ioinst_schib_valid(schib)) {
program_interrupt(env, PGM_OPERAND, 2);
cc = -EIO;
goto out;
}
trace_ioinst_sch_id("msch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_msch(sch, schib);
}
switch (ret) {
case -ENODEV:
cc = 3;
break;
case -EBUSY:
cc = 2;
break;
case 0:
cc = 0;
break;
default:
cc = 1;
break;
}
out:
s390_cpu_physical_memory_unmap(env, schib, len, 0);
return cc;
}
void ioinst_handle_msch(S390CPU *cpu, uint64_t reg1, uint32_t ipb)
{
int cssid, ssid, schid, m;
SubchDev *sch;
SCHIB schib;
uint64_t addr;
int ret = -ENODEV;
int cc;
CPUS390XState *env = &cpu->env;
uint8_t ar;
addr = decode_basedisp_s(env, ipb, &ar);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return;
}
if (s390_cpu_virt_mem_read(cpu, addr, ar, &schib, sizeof(schib))) {
return;
}
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid) ||
!ioinst_schib_valid(&schib)) {
program_interrupt(env, PGM_OPERAND, 2);
return;
}
trace_ioinst_sch_id("msch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_msch(sch, &schib);
}
switch (ret) {
case -ENODEV:
cc = 3;
break;
case -EBUSY:
cc = 2;
break;
case 0:
cc = 0;
break;
default:
cc = 1;
break;
}
setcc(cpu, cc);
}
