void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra)
{
int cssid, ssid, schid, m;
SubchDev *sch;
ORB orig_orb, orb;
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, &orig_orb, sizeof(orb))) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
copy_orb_from_guest(&orb, &orig_orb);
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid) ||
!ioinst_orb_valid(&orb)) {
s390_program_interrupt(env, PGM_OPERAND, 4, ra);
return;
}
trace_ioinst_sch_id("ssch", 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_ssch(sch, &orb));
}
void ioinst_handle_hsch(S390CPU *cpu, uint64_t reg1)
{
int cssid, ssid, schid, m;
SubchDev *sch;
int ret = -ENODEV;
int cc;
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
program_interrupt(&cpu->env, PGM_OPERAND, 2);
return;
}
trace_ioinst_sch_id("hsch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_hsch(sch);
}
switch (ret) {
case -ENODEV:
cc = 3;
break;
case -EBUSY:
cc = 2;
break;
case 0:
cc = 0;
break;
default:
cc = 1;
break;
}
setcc(cpu, cc);
}
int ioinst_handle_xsch(CPUS390XState *env, uint64_t reg1)
{
int cssid, ssid, schid, m;
SubchDev *sch;
int ret = -ENODEV;
int cc;
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
trace_ioinst_sch_id("xsch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_xsch(sch);
}
switch (ret) {
case -ENODEV:
cc = 3;
break;
case -EBUSY:
cc = 2;
break;
case 0:
cc = 0;
break;
default:
cc = 1;
break;
}
return cc;
}
void ioinst_handle_stsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb)
{
int cssid, ssid, schid, m;
SubchDev *sch;
uint64_t addr;
int cc;
SCHIB schib;
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 (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
/*
* As operand exceptions have a lower priority than access exceptions,
* we check whether the memory area is writeable (injecting the
* access execption if it is not) first.
*/
if (!s390_cpu_virt_mem_check_write(cpu, addr, ar, sizeof(schib))) {
program_interrupt(env, PGM_OPERAND, 2);
}
return;
}
trace_ioinst_sch_id("stsch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch) {
if (css_subch_visible(sch)) {
css_do_stsch(sch, &schib);
cc = 0;
} else {
/* Indicate no more subchannels in this css/ss */
cc = 3;
}
} else {
if (css_schid_final(m, cssid, ssid, schid)) {
cc = 3; /* No more subchannels in this css/ss */
} else {
/* Store an empty schib. */
memset(&schib, 0, sizeof(schib));
cc = 0;
}
}
if (cc != 3) {
if (s390_cpu_virt_mem_write(cpu, addr, ar, &schib,
sizeof(schib)) != 0) {
return;
}
} else {
/* Access exceptions have a higher priority than cc3 */
if (s390_cpu_virt_mem_check_write(cpu, addr, ar, sizeof(schib)) != 0) {
return;
}
}
setcc(cpu, cc);
}
void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb)
{
int cssid, ssid, schid, m;
SubchDev *sch;
ORB orig_orb, orb;
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, &orig_orb, sizeof(orb))) {
return;
}
copy_orb_from_guest(&orb, &orig_orb);
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid) ||
!ioinst_orb_valid(&orb)) {
program_interrupt(env, PGM_OPERAND, 2);
return;
}
trace_ioinst_sch_id("ssch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_ssch(sch, &orb);
}
switch (ret) {
case -ENODEV:
cc = 3;
break;
case -EBUSY:
cc = 2;
break;
case -EFAULT:
/*
* TODO:
* I'm wondering whether there is something better
* to do for us here (like setting some device or
* subchannel status).
*/
program_interrupt(env, PGM_ADDRESSING, 4);
return;
case 0:
cc = 0;
break;
default:
cc = 1;
break;
}
setcc(cpu, cc);
}
int ioinst_handle_ssch(CPUS390XState *env, uint64_t reg1, uint32_t ipb)
{
int cssid, ssid, schid, m;
SubchDev *sch;
ORB *orig_orb, orb;
uint64_t addr;
int ret = -ENODEV;
int cc;
hwaddr len = sizeof(*orig_orb);
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
orig_orb = s390_cpu_physical_memory_map(env, addr, &len, 0);
if (!orig_orb || len != sizeof(*orig_orb)) {
program_interrupt(env, PGM_ADDRESSING, 2);
cc = -EIO;
goto out;
}
copy_orb_from_guest(&orb, orig_orb);
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid) ||
!ioinst_orb_valid(&orb)) {
program_interrupt(env, PGM_OPERAND, 2);
cc = -EIO;
goto out;
}
trace_ioinst_sch_id("ssch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_ssch(sch, &orb);
}
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, orig_orb, 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;
hwaddr len = sizeof(*schib);
CPUS390XState *env = &cpu->env;
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return;
}
schib = s390_cpu_physical_memory_map(env, addr, &len, 0);
if (!schib || len != sizeof(*schib)) {
program_interrupt(env, PGM_ADDRESSING, 2);
goto out;
}
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid) ||
!ioinst_schib_valid(schib)) {
program_interrupt(env, PGM_OPERAND, 2);
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;
}
setcc(cpu, cc);
out:
s390_cpu_physical_memory_unmap(env, schib, len, 0);
}
int ioinst_handle_stsch(CPUS390XState *env, uint64_t reg1, uint32_t ipb)
{
int cssid, ssid, schid, m;
SubchDev *sch;
uint64_t addr;
int cc;
SCHIB *schib;
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, 1);
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)) {
program_interrupt(env, PGM_OPERAND, 2);
cc = -EIO;
goto out;
}
trace_ioinst_sch_id("stsch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch) {
if (css_subch_visible(sch)) {
css_do_stsch(sch, schib);
cc = 0;
} else {
/* Indicate no more subchannels in this css/ss */
cc = 3;
}
} else {
if (css_schid_final(m, cssid, ssid, schid)) {
cc = 3; /* No more subchannels in this css/ss */
} else {
/* Store an empty schib. */
memset(schib, 0, sizeof(*schib));
cc = 0;
}
}
out:
s390_cpu_physical_memory_unmap(env, schib, len, 1);
return cc;
}
void ioinst_handle_hsch(S390CPU *cpu, uint64_t reg1, uintptr_t ra)
{
int cssid, ssid, schid, m;
SubchDev *sch;
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
s390_program_interrupt(&cpu->env, PGM_OPERAND, 4, ra);
return;
}
trace_ioinst_sch_id("hsch", 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_hsch(sch));
}
int ioinst_handle_tsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra)
{
CPUS390XState *env = &cpu->env;
int cssid, ssid, schid, m;
SubchDev *sch;
IRB irb;
uint64_t addr;
int cc, irb_len;
uint8_t ar;
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
s390_program_interrupt(env, PGM_OPERAND, 4, ra);
return -EIO;
}
trace_ioinst_sch_id("tsch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb, &ar);
if (addr & 3) {
s390_program_interrupt(env, PGM_SPECIFICATION, 4, ra);
return -EIO;
}
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
cc = css_do_tsch_get_irb(sch, &irb, &irb_len);
} else {
cc = 3;
}
/* 0 - status pending, 1 - not status pending, 3 - not operational */
if (cc != 3) {
if (s390_cpu_virt_mem_write(cpu, addr, ar, &irb, irb_len) != 0) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return -EFAULT;
}
css_do_tsch_update_subch(sch);
} else {
irb_len = sizeof(irb) - sizeof(irb.emw);
/* Access exceptions have a higher priority than cc3 */
if (s390_cpu_virt_mem_check_write(cpu, addr, ar, irb_len) != 0) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return -EFAULT;
}
}
setcc(cpu, cc);
return 0;
}
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);
}
static int virtio_ccw_hcall_notify(const uint64_t *args)
{
uint64_t subch_id = args[0];
uint64_t queue = args[1];
SubchDev *sch;
int cssid, ssid, schid, m;
if (ioinst_disassemble_sch_ident(subch_id, &m, &cssid, &ssid, &schid)) {
return -EINVAL;
}
sch = css_find_subch(m, cssid, ssid, schid);
if (!sch || !css_subch_visible(sch)) {
return -EINVAL;
}
if (queue >= VIRTIO_CCW_QUEUE_MAX) {
return -EINVAL;
}
virtio_queue_notify(virtio_ccw_get_vdev(sch), queue);
return 0;
}
int ioinst_handle_tsch(CPUS390XState *env, uint64_t reg1, uint32_t ipb)
{
int cssid, ssid, schid, m;
SubchDev *sch;
IRB *irb;
uint64_t addr;
int ret = -ENODEV;
int cc;
hwaddr len = sizeof(*irb);
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
trace_ioinst_sch_id("tsch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
irb = s390_cpu_physical_memory_map(env, addr, &len, 1);
if (!irb || len != sizeof(*irb)) {
program_interrupt(env, PGM_ADDRESSING, 2);
cc = -EIO;
goto out;
}
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_tsch(sch, irb);
/* 0 - status pending, 1 - not status pending */
cc = ret;
} else {
cc = 3;
}
out:
s390_cpu_physical_memory_unmap(env, irb, sizeof(*irb), 1);
return cc;
}
void ioinst_handle_csch(S390CPU *cpu, uint64_t reg1)
{
int cssid, ssid, schid, m;
SubchDev *sch;
int ret = -ENODEV;
int cc;
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
program_interrupt(&cpu->env, PGM_OPERAND, 2);
return;
}
trace_ioinst_sch_id("csch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_csch(sch);
}
if (ret == -ENODEV) {
cc = 3;
} else {
cc = 0;
}
setcc(cpu, cc);
}
int ioinst_handle_csch(CPUS390XState *env, uint64_t reg1)
{
int cssid, ssid, schid, m;
SubchDev *sch;
int ret = -ENODEV;
int cc;
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
trace_ioinst_sch_id("csch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_csch(sch);
}
if (ret == -ENODEV) {
cc = 3;
} else {
cc = 0;
}
return cc;
}