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Merge remote-tracking branch 'agraf/s390-for-upstream' into staging

Browse Source 
# By Cornelia Huck (13) and others
# Via Alexander Graf
* agraf/s390-for-upstream:
  s390: Drop set_bit usage in virtio_ccw.
  s390: css error codes.
  s390: Use s390_cpu_physical_memory_map for tpi.
  sclpconsole: Don't instantiate sclpconsole with -nodefaults
  s390: Add s390-ccw-virtio machine.
  s390-virtio: Check for NULL device in reset hypercall
  s390: Move hw files to hw/s390x
  virtio-s390: add a reset function to virtio-s390 devices
  s390: Make typeinfo const
  s390: Add new channel I/O based virtio transport.
  s390-virtio: Factor out some initialization code.
  s390: Wire up channel I/O in kvm.
  s390: Virtual channel subsystem support.
  s390: Add channel I/O instructions.
  s390: I/O interrupt and machine check injection.
  s390: Channel I/O basic definitions.
  s390: Add mapping helper functions.
  s390: Lowcore mapping helper.
  s390: Add default support for SCLP console
This commit is contained in:
Anthony Liguori 2013-01-30 10:46:30 -06:00
commit 6ac5107dc7
21 changed files with 4398 additions and 94 deletions
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1
hw/boards.h
View File

@ -33,6 +33,7 @@ typedef struct QEMUMachine {
unsigned int no_serial:1,
no_parallel:1,
use_virtcon:1,
use_sclp:1,
no_floppy:1,
no_cdrom:1,
no_sdcard:1;

5
hw/s390x/Makefile.objs
View File

@ -1,8 +1,9 @@
obj-y = s390-virtio-bus.o s390-virtio.o
obj-y := $(addprefix ../,$(obj-y))
obj-y += s390-virtio-hcall.o
obj-y += sclp.o
obj-y += event-facility.o
obj-y += sclpquiesce.o sclpconsole.o
obj-y += ipl.o
obj-y += css.o
obj-y += s390-virtio-ccw.o
obj-y += virtio-ccw.o

1277
hw/s390x/css.c Normal file
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File diff suppressed because it is too large Load Diff

99
hw/s390x/css.h Normal file
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@ -0,0 +1,99 @@
/*
* Channel subsystem structures and definitions.
*
* Copyright 2012 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef CSS_H
#define CSS_H
#include "ioinst.h"
/* Channel subsystem constants. */
#define MAX_SCHID 65535
#define MAX_SSID 3
#define MAX_CSSID 254 /* 255 is reserved */
#define MAX_CHPID 255
#define MAX_CIWS 62
typedef struct CIW {
uint8_t type;
uint8_t command;
uint16_t count;
} QEMU_PACKED CIW;
typedef struct SenseId {
/* common part */
uint8_t reserved; /* always 0x'FF' */
uint16_t cu_type; /* control unit type */
uint8_t cu_model; /* control unit model */
uint16_t dev_type; /* device type */
uint8_t dev_model; /* device model */
uint8_t unused; /* padding byte */
/* extended part */
CIW ciw[MAX_CIWS]; /* variable # of CIWs */
} QEMU_PACKED SenseId;
/* Channel measurements, from linux/drivers/s390/cio/cmf.c. */
typedef struct CMB {
uint16_t ssch_rsch_count;
uint16_t sample_count;
uint32_t device_connect_time;
uint32_t function_pending_time;
uint32_t device_disconnect_time;
uint32_t control_unit_queuing_time;
uint32_t device_active_only_time;
uint32_t reserved[2];
} QEMU_PACKED CMB;
typedef struct CMBE {
uint32_t ssch_rsch_count;
uint32_t sample_count;
uint32_t device_connect_time;
uint32_t function_pending_time;
uint32_t device_disconnect_time;
uint32_t control_unit_queuing_time;
uint32_t device_active_only_time;
uint32_t device_busy_time;
uint32_t initial_command_response_time;
uint32_t reserved[7];
} QEMU_PACKED CMBE;
struct SubchDev {
/* channel-subsystem related things: */
uint8_t cssid;
uint8_t ssid;
uint16_t schid;
uint16_t devno;
SCHIB curr_status;
uint8_t sense_data[32];
hwaddr channel_prog;
CCW1 last_cmd;
bool last_cmd_valid;
ORB *orb;
/* transport-provided data: */
int (*ccw_cb) (SubchDev *, CCW1);
SenseId id;
void *driver_data;
};
typedef SubchDev *(*css_subch_cb_func)(uint8_t m, uint8_t cssid, uint8_t ssid,
uint16_t schid);
int css_create_css_image(uint8_t cssid, bool default_image);
bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno);
void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid,
uint16_t devno, SubchDev *sch);
void css_sch_build_virtual_schib(SubchDev *sch, uint8_t chpid, uint8_t type);
void css_reset(void);
void css_reset_sch(SubchDev *sch);
void css_queue_crw(uint8_t rsc, uint8_t erc, int chain, uint16_t rsid);
void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid,
int hotplugged, int add);
void css_generate_chp_crws(uint8_t cssid, uint8_t chpid);
#endif

2
hw/s390x/ipl.c
View File

@ -159,7 +159,7 @@ static void s390_ipl_class_init(ObjectClass *klass, void *data)
dc->no_user = 1;
}
static TypeInfo s390_ipl_info = {
static const TypeInfo s390_ipl_info = {
.class_init = s390_ipl_class_init,
.parent = TYPE_SYS_BUS_DEVICE,
.name = "s390-ipl",

16
hw/s390-virtio-bus.c → hw/s390x/s390-virtio-bus.c
View File

@ -17,12 +17,12 @@
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "hw.h"
#include "hw/hw.h"
#include "block/block.h"
#include "sysemu/sysemu.h"
#include "boards.h"
#include "hw/boards.h"
#include "monitor/monitor.h"
#include "loader.h"
#include "hw/loader.h"
#include "elf.h"
#include "hw/virtio.h"
#include "hw/virtio-rng.h"
@ -31,7 +31,7 @@
#include "hw/sysbus.h"
#include "sysemu/kvm.h"
#include "hw/s390-virtio-bus.h"
#include "hw/s390x/s390-virtio-bus.h"
#include "hw/virtio-bus.h"
/* #define DEBUG_S390 */
@ -508,6 +508,13 @@ static int s390_virtio_busdev_init(DeviceState *dev)
return _info->init(_dev);
}
static void s390_virtio_busdev_reset(DeviceState *dev)
{
VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
virtio_reset(_dev->vdev);
}
static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
@ -515,6 +522,7 @@ static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
dc->init = s390_virtio_busdev_init;
dc->bus_type = TYPE_S390_VIRTIO_BUS;
dc->unplug = qdev_simple_unplug_cb;
dc->reset = s390_virtio_busdev_reset;
}
static const TypeInfo virtio_s390_device_info = {

12
hw/s390-virtio-bus.h → hw/s390x/s390-virtio-bus.h
View File

@ -19,12 +19,12 @@
#ifndef HW_S390_VIRTIO_BUS_H
#define HW_S390_VIRTIO_BUS_H 1
#include "virtio-blk.h"
#include "virtio-net.h"
#include "virtio-rng.h"
#include "virtio-serial.h"
#include "virtio-scsi.h"
#include "virtio-bus.h"
#include "hw/virtio-blk.h"
#include "hw/virtio-net.h"
#include "hw/virtio-rng.h"
#include "hw/virtio-serial.h"
#include "hw/virtio-scsi.h"
#include "hw/virtio-bus.h"
#define VIRTIO_DEV_OFFS_TYPE 0 /* 8 bits */
#define VIRTIO_DEV_OFFS_NUM_VQ 1 /* 8 bits */

134
hw/s390x/s390-virtio-ccw.c Normal file
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@ -0,0 +1,134 @@
/*
* virtio ccw machine
*
* Copyright 2012 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#include "hw/boards.h"
#include "exec/address-spaces.h"
#include "s390-virtio.h"
#include "sclp.h"
#include "ioinst.h"
#include "css.h"
#include "virtio-ccw.h"
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;
}
virtio_queue_notify(virtio_ccw_get_vdev(sch), queue);
return 0;
}
static int virtio_ccw_hcall_early_printk(const uint64_t *args)
{
uint64_t mem = args[0];
if (mem < ram_size) {
/* Early printk */
return 0;
}
return -EINVAL;
}
static void virtio_ccw_register_hcalls(void)
{
s390_register_virtio_hypercall(KVM_S390_VIRTIO_CCW_NOTIFY,
virtio_ccw_hcall_notify);
/* Tolerate early printk. */
s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY,
virtio_ccw_hcall_early_printk);
}
static void ccw_init(QEMUMachineInitArgs *args)
{
ram_addr_t my_ram_size = args->ram_size;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
int shift = 0;
uint8_t *storage_keys;
int ret;
VirtualCssBus *css_bus;
/* s390x ram size detection needs a 16bit multiplier + an increment. So
guests > 64GB can be specified in 2MB steps etc. */
while ((my_ram_size >> (20 + shift)) > 65535) {
shift++;
}
my_ram_size = my_ram_size >> (20 + shift) << (20 + shift);
/* lets propagate the changed ram size into the global variable. */
ram_size = my_ram_size;
/* get a BUS */
css_bus = virtual_css_bus_init();
s390_sclp_init();
s390_init_ipl_dev(args->kernel_filename, args->kernel_cmdline,
args->initrd_filename);
/* register hypercalls */
virtio_ccw_register_hcalls();
/* allocate RAM */
memory_region_init_ram(ram, "s390.ram", my_ram_size);
vmstate_register_ram_global(ram);
memory_region_add_subregion(sysmem, 0, ram);
/* allocate storage keys */
storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);
/* init CPUs */
s390_init_cpus(args->cpu_model, storage_keys);
if (kvm_enabled()) {
kvm_s390_enable_css_support(s390_cpu_addr2state(0));
}
/*
* Create virtual css and set it as default so that non mcss-e
* enabled guests only see virtio devices.
*/
ret = css_create_css_image(VIRTUAL_CSSID, true);
assert(ret == 0);
/* Create VirtIO network adapters */
s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw");
}
static QEMUMachine ccw_machine = {
.name = "s390-ccw-virtio",
.alias = "s390-ccw",
.desc = "VirtIO-ccw based S390 machine",
.init = ccw_init,
.block_default_type = IF_VIRTIO,
.no_cdrom = 1,
.no_floppy = 1,
.no_serial = 1,
.no_parallel = 1,
.no_sdcard = 1,
.use_sclp = 1,
.max_cpus = 255,
DEFAULT_MACHINE_OPTIONS,
};
static void ccw_machine_init(void)
{
qemu_register_machine(&ccw_machine);
}
machine_init(ccw_machine_init)

2
hw/s390x/s390-virtio-hcall.c
View File

@ -10,7 +10,7 @@
*/
#include "cpu.h"
#include "hw/s390-virtio.h"
#include "hw/s390x/s390-virtio.h"
#define MAX_DIAG_SUBCODES 255

131
hw/s390-virtio.c → hw/s390x/s390-virtio.c
View File

@ -21,22 +21,22 @@
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "hw.h"
#include "hw/hw.h"
#include "block/block.h"
#include "sysemu/blockdev.h"
#include "sysemu/sysemu.h"
#include "net/net.h"
#include "boards.h"
#include "hw/boards.h"
#include "monitor/monitor.h"
#include "loader.h"
#include "hw/loader.h"
#include "hw/virtio.h"
#include "hw/sysbus.h"
#include "sysemu/kvm.h"
#include "exec/address-spaces.h"
#include "hw/s390-virtio-bus.h"
#include "hw/s390x/s390-virtio-bus.h"
#include "hw/s390x/sclp.h"
#include "hw/s390-virtio.h"
#include "hw/s390x/s390-virtio.h"
//#define DEBUG_S390
@ -86,6 +86,9 @@ static int s390_virtio_hcall_reset(const uint64_t *args)
VirtIOS390Device *dev;
dev = s390_virtio_bus_find_mem(s390_bus, mem);
if (dev == NULL) {
return -EINVAL;
}
virtio_reset(dev->vdev);
stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS, 0);
s390_virtio_device_sync(dev);
@ -147,13 +150,73 @@ unsigned s390_del_running_cpu(CPUS390XState *env)
return s390_running_cpus;
}
void s390_init_ipl_dev(const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename)
{
DeviceState *dev;
dev = qdev_create(NULL, "s390-ipl");
if (kernel_filename) {
qdev_prop_set_string(dev, "kernel", kernel_filename);
}
if (initrd_filename) {
qdev_prop_set_string(dev, "initrd", initrd_filename);
}
qdev_prop_set_string(dev, "cmdline", kernel_cmdline);
qdev_init_nofail(dev);
}
void s390_init_cpus(const char *cpu_model, uint8_t *storage_keys)
{
int i;
if (cpu_model == NULL) {
cpu_model = "host";
}
ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus);
for (i = 0; i < smp_cpus; i++) {
S390CPU *cpu;
cpu = cpu_s390x_init(cpu_model);
ipi_states[i] = cpu;
cpu->env.halted = 1;
cpu->env.exception_index = EXCP_HLT;
cpu->env.storage_keys = storage_keys;
}
}
void s390_create_virtio_net(BusState *bus, const char *name)
{
int i;
for (i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
DeviceState *dev;
if (!nd->model) {
nd->model = g_strdup("virtio");
}
if (strcmp(nd->model, "virtio")) {
fprintf(stderr, "S390 only supports VirtIO nics\n");
exit(1);
}
dev = qdev_create(bus, name);
qdev_set_nic_properties(dev, nd);
qdev_init_nofail(dev);
}
}
/* PC hardware initialisation */
static void s390_init(QEMUMachineInitArgs *args)
{
ram_addr_t my_ram_size = args->ram_size;
const char *cpu_model = args->cpu_model;
CPUS390XState *env = NULL;
DeviceState *dev;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
int shift = 0;
@ -161,7 +224,6 @@ static void s390_init(QEMUMachineInitArgs *args)
void *virtio_region;
hwaddr virtio_region_len;
hwaddr virtio_region_start;
int i;
/* s390x ram size detection needs a 16bit multiplier + an increment. So
guests > 64GB can be specified in 2MB steps etc. */
@ -176,15 +238,8 @@ static void s390_init(QEMUMachineInitArgs *args)
/* get a BUS */
s390_bus = s390_virtio_bus_init(&my_ram_size);
s390_sclp_init();
dev = qdev_create(NULL, "s390-ipl");
if (args->kernel_filename) {
qdev_prop_set_string(dev, "kernel", args->kernel_filename);
}
if (args->initrd_filename) {
qdev_prop_set_string(dev, "initrd", args->initrd_filename);
}
qdev_prop_set_string(dev, "cmdline", args->kernel_cmdline);
qdev_init_nofail(dev);
s390_init_ipl_dev(args->kernel_filename, args->kernel_cmdline,
args->initrd_filename);
/* register hypercalls */
s390_virtio_register_hcalls();
@ -207,46 +262,10 @@ static void s390_init(QEMUMachineInitArgs *args)
storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = "host";
}
ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus);
for (i = 0; i < smp_cpus; i++) {
S390CPU *cpu;
CPUS390XState *tmp_env;
cpu = cpu_s390x_init(cpu_model);
tmp_env = &cpu->env;
if (!env) {
env = tmp_env;
}
ipi_states[i] = cpu;
tmp_env->halted = 1;
tmp_env->exception_index = EXCP_HLT;
tmp_env->storage_keys = storage_keys;
}
s390_init_cpus(args->cpu_model, storage_keys);
/* Create VirtIO network adapters */
for(i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
DeviceState *dev;
if (!nd->model) {
nd->model = g_strdup("virtio");
}
if (strcmp(nd->model, "virtio")) {
fprintf(stderr, "S390 only supports VirtIO nics\n");
exit(1);
}
dev = qdev_create((BusState *)s390_bus, "virtio-net-s390");
qdev_set_nic_properties(dev, nd);
qdev_init_nofail(dev);
}
s390_create_virtio_net((BusState *)s390_bus, "virtio-net-s390");
}
static QEMUMachine s390_machine = {

6
hw/s390-virtio.h → hw/s390x/s390-virtio.h
View File

@ -15,8 +15,14 @@
#define KVM_S390_VIRTIO_NOTIFY 0
#define KVM_S390_VIRTIO_RESET 1
#define KVM_S390_VIRTIO_SET_STATUS 2
#define KVM_S390_VIRTIO_CCW_NOTIFY 3
typedef int (*s390_virtio_fn)(const uint64_t *args);
void s390_register_virtio_hypercall(uint64_t code, s390_virtio_fn fn);
void s390_init_cpus(const char *cpu_model, uint8_t *storage_keys);
void s390_init_ipl_dev(const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename);
void s390_create_virtio_net(BusState *bus, const char *name);
#endif

960
hw/s390x/virtio-ccw.c Normal file
View File

@ -0,0 +1,960 @@
/*
* virtio ccw target implementation
*
* Copyright 2012 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#include "hw/hw.h"
#include "block/block.h"
#include "sysemu/blockdev.h"
#include "sysemu/sysemu.h"
#include "net/net.h"
#include "monitor/monitor.h"
#include "hw/virtio.h"
#include "hw/virtio-serial.h"
#include "hw/virtio-net.h"
#include "hw/sysbus.h"
#include "qemu/bitops.h"
#include "hw/virtio-bus.h"
#include "ioinst.h"
#include "css.h"
#include "virtio-ccw.h"
#include "trace.h"
static int virtual_css_bus_reset(BusState *qbus)
{
/* This should actually be modelled via the generic css */
css_reset();
/* we dont traverse ourself, return 0 */
return 0;
}
static void virtual_css_bus_class_init(ObjectClass *klass, void *data)
{
BusClass *k = BUS_CLASS(klass);
k->reset = virtual_css_bus_reset;
}
static const TypeInfo virtual_css_bus_info = {
.name = TYPE_VIRTUAL_CSS_BUS,
.parent = TYPE_BUS,
.instance_size = sizeof(VirtualCssBus),
.class_init = virtual_css_bus_class_init,
};
static const VirtIOBindings virtio_ccw_bindings;
VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
{
VirtIODevice *vdev = NULL;
if (sch->driver_data) {
vdev = ((VirtioCcwDevice *)sch->driver_data)->vdev;
}
return vdev;
}
VirtualCssBus *virtual_css_bus_init(void)
{
VirtualCssBus *cbus;
BusState *bus;
DeviceState *dev;
/* Create bridge device */
dev = qdev_create(NULL, "virtual-css-bridge");
qdev_init_nofail(dev);
/* Create bus on bridge device */
bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css");
cbus = VIRTUAL_CSS_BUS(bus);
/* Enable hotplugging */
bus->allow_hotplug = 1;
return cbus;
}
/* Communication blocks used by several channel commands. */
typedef struct VqInfoBlock {
uint64_t queue;
uint32_t align;
uint16_t index;
uint16_t num;
} QEMU_PACKED VqInfoBlock;
typedef struct VqConfigBlock {
uint16_t index;
uint16_t num_max;
} QEMU_PACKED VqConfigBlock;
typedef struct VirtioFeatDesc {
uint32_t features;
uint8_t index;
} QEMU_PACKED VirtioFeatDesc;
/* Specify where the virtqueues for the subchannel are in guest memory. */
static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
uint16_t index, uint16_t num)
{
VirtioCcwDevice *dev = sch->driver_data;
if (index > VIRTIO_PCI_QUEUE_MAX) {
return -EINVAL;
}
/* Current code in virtio.c relies on 4K alignment. */
if (addr && (align != 4096)) {
return -EINVAL;
}
if (!dev) {
return -EINVAL;
}
virtio_queue_set_addr(dev->vdev, index, addr);
if (!addr) {
virtio_queue_set_vector(dev->vdev, index, 0);
} else {
/* Fail if we don't have a big enough queue. */
/* TODO: Add interface to handle vring.num changing */
if (virtio_queue_get_num(dev->vdev, index) > num) {
return -EINVAL;
}
virtio_queue_set_vector(dev->vdev, index, index);
}
/* tell notify handler in case of config change */
dev->vdev->config_vector = VIRTIO_PCI_QUEUE_MAX;
return 0;
}
static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
{
int ret;
VqInfoBlock info;
uint8_t status;
VirtioFeatDesc features;
void *config;
hwaddr indicators;
VqConfigBlock vq_config;
VirtioCcwDevice *dev = sch->driver_data;
bool check_len;
int len;
hwaddr hw_len;
if (!dev) {
return -EINVAL;
}
trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
ccw.cmd_code);
check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
/* Look at the command. */
switch (ccw.cmd_code) {
case CCW_CMD_SET_VQ:
if (check_len) {
if (ccw.count != sizeof(info)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(info)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
info.queue = ldq_phys(ccw.cda);
info.align = ldl_phys(ccw.cda + sizeof(info.queue));
info.index = lduw_phys(ccw.cda + sizeof(info.queue)
+ sizeof(info.align));
info.num = lduw_phys(ccw.cda + sizeof(info.queue)
+ sizeof(info.align)
+ sizeof(info.index));
ret = virtio_ccw_set_vqs(sch, info.queue, info.align, info.index,
info.num);
sch->curr_status.scsw.count = 0;
}
break;
case CCW_CMD_VDEV_RESET:
virtio_reset(dev->vdev);
ret = 0;
break;
case CCW_CMD_READ_FEAT:
if (check_len) {
if (ccw.count != sizeof(features)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(features)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
features.index = ldub_phys(ccw.cda + sizeof(features.features));
if (features.index < ARRAY_SIZE(dev->host_features)) {
features.features = dev->host_features[features.index];
} else {
/* Return zeroes if the guest supports more feature bits. */
features.features = 0;
}
stl_le_phys(ccw.cda, features.features);
sch->curr_status.scsw.count = ccw.count - sizeof(features);
ret = 0;
}
break;
case CCW_CMD_WRITE_FEAT:
if (check_len) {
if (ccw.count != sizeof(features)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(features)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
features.index = ldub_phys(ccw.cda + sizeof(features.features));
features.features = ldl_le_phys(ccw.cda);
if (features.index < ARRAY_SIZE(dev->host_features)) {
if (dev->vdev->set_features) {
dev->vdev->set_features(dev->vdev, features.features);
}
dev->vdev->guest_features = features.features;
} else {
/*
* If the guest supports more feature bits, assert that it
* passes us zeroes for those we don't support.
*/
if (features.features) {
fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
features.index, features.features);
/* XXX: do a unit check here? */
}
}
sch->curr_status.scsw.count = ccw.count - sizeof(features);
ret = 0;
}
break;
case CCW_CMD_READ_CONF:
if (check_len) {
if (ccw.count > dev->vdev->config_len) {
ret = -EINVAL;
break;
}
}
len = MIN(ccw.count, dev->vdev->config_len);
if (!ccw.cda) {
ret = -EFAULT;
} else {
dev->vdev->get_config(dev->vdev, dev->vdev->config);
/* XXX config space endianness */
cpu_physical_memory_write(ccw.cda, dev->vdev->config, len);
sch->curr_status.scsw.count = ccw.count - len;
ret = 0;
}
break;
case CCW_CMD_WRITE_CONF:
if (check_len) {
if (ccw.count > dev->vdev->config_len) {
ret = -EINVAL;
break;
}
}
len = MIN(ccw.count, dev->vdev->config_len);
hw_len = len;
if (!ccw.cda) {
ret = -EFAULT;
} else {
config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
if (!config) {
ret = -EFAULT;
} else {
len = hw_len;
/* XXX config space endianness */
memcpy(dev->vdev->config, config, len);
cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
if (dev->vdev->set_config) {
dev->vdev->set_config(dev->vdev, dev->vdev->config);
}
sch->curr_status.scsw.count = ccw.count - len;
ret = 0;
}
}
break;
case CCW_CMD_WRITE_STATUS:
if (check_len) {
if (ccw.count != sizeof(status)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(status)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
status = ldub_phys(ccw.cda);
virtio_set_status(dev->vdev, status);
if (dev->vdev->status == 0) {
virtio_reset(dev->vdev);
}
sch->curr_status.scsw.count = ccw.count - sizeof(status);
ret = 0;
}
break;
case CCW_CMD_SET_IND:
if (check_len) {
if (ccw.count != sizeof(indicators)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(indicators)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
indicators = ldq_phys(ccw.cda);
if (!indicators) {
ret = -EFAULT;
} else {
dev->indicators = indicators;
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
ret = 0;
}
break;
case CCW_CMD_SET_CONF_IND:
if (check_len) {
if (ccw.count != sizeof(indicators)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(indicators)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
indicators = ldq_phys(ccw.cda);
if (!indicators) {
ret = -EFAULT;
} else {
dev->indicators2 = indicators;
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
ret = 0;
}
break;
case CCW_CMD_READ_VQ_CONF:
if (check_len) {
if (ccw.count != sizeof(vq_config)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(vq_config)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
vq_config.index = lduw_phys(ccw.cda);
vq_config.num_max = virtio_queue_get_num(dev->vdev,
vq_config.index);
stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max);
sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
ret = 0;
}
break;
default:
ret = -ENOSYS;
break;
}
return ret;
}
static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev)
{
unsigned int cssid = 0;
unsigned int ssid = 0;
unsigned int schid;
unsigned int devno;
bool have_devno = false;
bool found = false;
SubchDev *sch;
int ret;
int num;
DeviceState *parent = DEVICE(dev);
sch = g_malloc0(sizeof(SubchDev));
sch->driver_data = dev;
dev->sch = sch;
dev->vdev = vdev;
dev->indicators = 0;
/* Initialize subchannel structure. */
sch->channel_prog = 0x0;
sch->last_cmd_valid = false;
sch->orb = NULL;
/*
* Use a device number if provided. Otherwise, fall back to subchannel
* number.
*/
if (dev->bus_id) {
num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
if (num == 3) {
if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
ret = -EINVAL;
error_report("Invalid cssid or ssid: cssid %x, ssid %x",
cssid, ssid);
goto out_err;
}
/* Enforce use of virtual cssid. */
if (cssid != VIRTUAL_CSSID) {
ret = -EINVAL;
error_report("cssid %x not valid for virtio devices", cssid);
goto out_err;
}
if (css_devno_used(cssid, ssid, devno)) {
ret = -EEXIST;
error_report("Device %x.%x.%04x already exists", cssid, ssid,
devno);
goto out_err;
}
sch->cssid = cssid;
sch->ssid = ssid;
sch->devno = devno;
have_devno = true;
} else {
ret = -EINVAL;
error_report("Malformed devno parameter '%s'", dev->bus_id);
goto out_err;
}
}
/* Find the next free id. */
if (have_devno) {
for (schid = 0; schid <= MAX_SCHID; schid++) {
if (!css_find_subch(1, cssid, ssid, schid)) {
sch->schid = schid;
css_subch_assign(cssid, ssid, schid, devno, sch);
found = true;
break;
}
}
if (!found) {
ret = -ENODEV;
error_report("No free subchannel found for %x.%x.%04x", cssid, ssid,
devno);
goto out_err;
}
trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
"user-configured");
} else {
cssid = VIRTUAL_CSSID;
for (ssid = 0; ssid <= MAX_SSID; ssid++) {
for (schid = 0; schid <= MAX_SCHID; schid++) {
if (!css_find_subch(1, cssid, ssid, schid)) {
sch->cssid = cssid;
sch->ssid = ssid;
sch->schid = schid;
devno = schid;
/*
* If the devno is already taken, look further in this
* subchannel set.
*/
while (css_devno_used(cssid, ssid, devno)) {
if (devno == MAX_SCHID) {
devno = 0;
} else if (devno == schid - 1) {
ret = -ENODEV;
error_report("No free devno found");
goto out_err;
} else {
devno++;
}
}
sch->devno = devno;
css_subch_assign(cssid, ssid, schid, devno, sch);
found = true;
break;
}
}
if (found) {
break;
}
}
if (!found) {
ret = -ENODEV;
error_report("Virtual channel subsystem is full!");
goto out_err;
}
trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
"auto-configured");
}
/* Build initial schib. */
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
sch->ccw_cb = virtio_ccw_cb;
/* Build senseid data. */
memset(&sch->id, 0, sizeof(SenseId));
sch->id.reserved = 0xff;
sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
sch->id.cu_model = dev->vdev->device_id;
virtio_bind_device(vdev, &virtio_ccw_bindings, DEVICE(dev));
/* Only the first 32 feature bits are used. */
dev->host_features[0] = vdev->get_features(vdev, dev->host_features[0]);
dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE;
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
parent->hotplugged, 1);
return 0;
out_err:
dev->sch = NULL;
g_free(sch);
return ret;
}
static int virtio_ccw_exit(VirtioCcwDevice *dev)
{
SubchDev *sch = dev->sch;
if (sch) {
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
g_free(sch);
}
dev->indicators = 0;
return 0;
}
static int virtio_ccw_net_init(VirtioCcwDevice *dev)
{
VirtIODevice *vdev;
vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net);
if (!vdev) {
return -1;
}
return virtio_ccw_device_init(dev, vdev);
}
static int virtio_ccw_net_exit(VirtioCcwDevice *dev)
{
virtio_net_exit(dev->vdev);
return virtio_ccw_exit(dev);
}
static int virtio_ccw_blk_init(VirtioCcwDevice *dev)
{
VirtIODevice *vdev;
vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
if (!vdev) {
return -1;
}
return virtio_ccw_device_init(dev, vdev);
}
static int virtio_ccw_blk_exit(VirtioCcwDevice *dev)
{
virtio_blk_exit(dev->vdev);
blockdev_mark_auto_del(dev->blk.conf.bs);
return virtio_ccw_exit(dev);
}
static int virtio_ccw_serial_init(VirtioCcwDevice *dev)
{
VirtIODevice *vdev;
vdev = virtio_serial_init((DeviceState *)dev, &dev->serial);
if (!vdev) {
return -1;
}
return virtio_ccw_device_init(dev, vdev);
}
static int virtio_ccw_serial_exit(VirtioCcwDevice *dev)
{
virtio_serial_exit(dev->vdev);
return virtio_ccw_exit(dev);
}
static int virtio_ccw_balloon_init(VirtioCcwDevice *dev)
{
VirtIODevice *vdev;
vdev = virtio_balloon_init((DeviceState *)dev);
if (!vdev) {
return -1;
}
return virtio_ccw_device_init(dev, vdev);
}
static int virtio_ccw_balloon_exit(VirtioCcwDevice *dev)
{
virtio_balloon_exit(dev->vdev);
return virtio_ccw_exit(dev);
}
static int virtio_ccw_scsi_init(VirtioCcwDevice *dev)
{
VirtIODevice *vdev;
vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi);
if (!vdev) {
return -1;
}
return virtio_ccw_device_init(dev, vdev);
}
static int virtio_ccw_scsi_exit(VirtioCcwDevice *dev)
{
virtio_scsi_exit(dev->vdev);
return virtio_ccw_exit(dev);
}
/* DeviceState to VirtioCcwDevice. Note: used on datapath,
* be careful and test performance if you change this.
*/
static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
{
return container_of(d, VirtioCcwDevice, parent_obj);
}
static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
{
VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d);
SubchDev *sch = dev->sch;
uint64_t indicators;
if (vector >= 128) {
return;
}
if (vector < VIRTIO_PCI_QUEUE_MAX) {
indicators = ldq_phys(dev->indicators);
indicators |= 1ULL << vector;
stq_phys(dev->indicators, indicators);
} else {
vector = 0;
indicators = ldq_phys(dev->indicators2);
indicators |= 1ULL << vector;
stq_phys(dev->indicators2, indicators);
}
css_conditional_io_interrupt(sch);
}
static unsigned virtio_ccw_get_features(DeviceState *d)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
/* Only the first 32 feature bits are used. */
return dev->host_features[0];
}
static void virtio_ccw_reset(DeviceState *d)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
virtio_reset(dev->vdev);
css_reset_sch(dev->sch);
}
/**************** Virtio-ccw Bus Device Descriptions *******************/
static const VirtIOBindings virtio_ccw_bindings = {
.notify = virtio_ccw_notify,
.get_features = virtio_ccw_get_features,
};
static Property virtio_ccw_net_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_NIC_PROPERTIES(VirtioCcwDevice, nic),
DEFINE_PROP_UINT32("x-txtimer", VirtioCcwDevice,
net.txtimer, TX_TIMER_INTERVAL),
DEFINE_PROP_INT32("x-txburst", VirtioCcwDevice,
net.txburst, TX_BURST),
DEFINE_PROP_STRING("tx", VirtioCcwDevice, net.tx),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->init = virtio_ccw_net_init;
k->exit = virtio_ccw_net_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_net_properties;
}
static const TypeInfo virtio_ccw_net = {
.name = "virtio-net-ccw",
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtioCcwDevice),
.class_init = virtio_ccw_net_class_init,
};
static Property virtio_ccw_blk_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_BLOCK_PROPERTIES(VirtioCcwDevice, blk.conf),
DEFINE_PROP_STRING("serial", VirtioCcwDevice, blk.serial),
#ifdef __linux__
DEFINE_PROP_BIT("scsi", VirtioCcwDevice, blk.scsi, 0, true),
#endif
DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->init = virtio_ccw_blk_init;
k->exit = virtio_ccw_blk_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_blk_properties;
}
static const TypeInfo virtio_ccw_blk = {
.name = "virtio-blk-ccw",
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtioCcwDevice),
.class_init = virtio_ccw_blk_class_init,
};
static Property virtio_ccw_serial_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_PROP_UINT32("max_ports", VirtioCcwDevice,
serial.max_virtserial_ports, 31),
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->init = virtio_ccw_serial_init;
k->exit = virtio_ccw_serial_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_serial_properties;
}
static const TypeInfo virtio_ccw_serial = {
.name = "virtio-serial-ccw",
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtioCcwDevice),
.class_init = virtio_ccw_serial_class_init,
};
static Property virtio_ccw_balloon_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->init = virtio_ccw_balloon_init;
k->exit = virtio_ccw_balloon_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_balloon_properties;
}
static const TypeInfo virtio_ccw_balloon = {
.name = "virtio-balloon-ccw",
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtioCcwDevice),
.class_init = virtio_ccw_balloon_class_init,
};
static Property virtio_ccw_scsi_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtioCcwDevice, host_features[0], scsi),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->init = virtio_ccw_scsi_init;
k->exit = virtio_ccw_scsi_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_scsi_properties;
}
static const TypeInfo virtio_ccw_scsi = {
.name = "virtio-scsi-ccw",
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtioCcwDevice),
.class_init = virtio_ccw_scsi_class_init,
};
static int virtio_ccw_busdev_init(DeviceState *dev)
{
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
virtio_ccw_bus_new(&_dev->bus, _dev);
return _info->init(_dev);
}
static int virtio_ccw_busdev_exit(DeviceState *dev)
{
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
return _info->exit(_dev);
}
static int virtio_ccw_busdev_unplug(DeviceState *dev)
{
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
SubchDev *sch = _dev->sch;
/*
* We should arrive here only for device_del, since we don't support
* direct hot(un)plug of channels, but only through virtio.
*/
assert(sch != NULL);
/* Subchannel is now disabled and no longer valid. */
sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA |
PMCW_FLAGS_MASK_DNV);
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0);
object_unparent(OBJECT(dev));
qdev_free(dev);
return 0;
}
static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->init = virtio_ccw_busdev_init;
dc->exit = virtio_ccw_busdev_exit;
dc->unplug = virtio_ccw_busdev_unplug;
dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
}
static const TypeInfo virtio_ccw_device_info = {
.name = TYPE_VIRTIO_CCW_DEVICE,
.parent = TYPE_DEVICE,
.instance_size = sizeof(VirtioCcwDevice),
.class_init = virtio_ccw_device_class_init,
.class_size = sizeof(VirtIOCCWDeviceClass),
.abstract = true,
};
/***************** Virtual-css Bus Bridge Device ********************/
/* Only required to have the virtio bus as child in the system bus */
static int virtual_css_bridge_init(SysBusDevice *dev)
{
/* nothing */
return 0;
}
static void virtual_css_bridge_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = virtual_css_bridge_init;
dc->no_user = 1;
}
static const TypeInfo virtual_css_bridge_info = {
.name = "virtual-css-bridge",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(SysBusDevice),
.class_init = virtual_css_bridge_class_init,
};
/* virtio-ccw-bus */
void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev)
{
DeviceState *qdev = DEVICE(dev);
BusState *qbus;
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_CCW_BUS, qdev, NULL);
qbus = BUS(bus);
qbus->allow_hotplug = 0;
}
static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
{
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
BusClass *bus_class = BUS_CLASS(klass);
bus_class->max_dev = 1;
k->notify = virtio_ccw_notify;
k->get_features = virtio_ccw_get_features;
}
static const TypeInfo virtio_ccw_bus_info = {
.name = TYPE_VIRTIO_CCW_BUS,
.parent = TYPE_VIRTIO_BUS,
.instance_size = sizeof(VirtioCcwBusState),
.class_init = virtio_ccw_bus_class_init,
};
static void virtio_ccw_register(void)
{
type_register_static(&virtio_ccw_bus_info);
type_register_static(&virtual_css_bus_info);
type_register_static(&virtio_ccw_device_info);
type_register_static(&virtio_ccw_serial);
type_register_static(&virtio_ccw_blk);
type_register_static(&virtio_ccw_net);
type_register_static(&virtio_ccw_balloon);
type_register_static(&virtio_ccw_scsi);
type_register_static(&virtual_css_bridge_info);
}
type_init(virtio_ccw_register)

98
hw/s390x/virtio-ccw.h Normal file
View File

@ -0,0 +1,98 @@
/*
* virtio ccw target definitions
*
* Copyright 2012 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef HW_S390X_VIRTIO_CCW_H
#define HW_S390X_VIRTIO_CCW_H
#include <hw/virtio-blk.h>
#include <hw/virtio-net.h>
#include <hw/virtio-serial.h>
#include <hw/virtio-scsi.h>
#include <hw/virtio-bus.h>
#define VIRTUAL_CSSID 0xfe
#define VIRTIO_CCW_CU_TYPE 0x3832
#define VIRTIO_CCW_CHPID_TYPE 0x32
#define CCW_CMD_SET_VQ 0x13
#define CCW_CMD_VDEV_RESET 0x33
#define CCW_CMD_READ_FEAT 0x12
#define CCW_CMD_WRITE_FEAT 0x11
#define CCW_CMD_READ_CONF 0x22
#define CCW_CMD_WRITE_CONF 0x21
#define CCW_CMD_WRITE_STATUS 0x31
#define CCW_CMD_SET_IND 0x43
#define CCW_CMD_SET_CONF_IND 0x53
#define CCW_CMD_READ_VQ_CONF 0x32
#define TYPE_VIRTIO_CCW_DEVICE "virtio-ccw-device"
#define VIRTIO_CCW_DEVICE(obj) \
OBJECT_CHECK(VirtioCcwDevice, (obj), TYPE_VIRTIO_CCW_DEVICE)
#define VIRTIO_CCW_DEVICE_CLASS(klass) \
OBJECT_CLASS_CHECK(VirtIOCCWDeviceClass, (klass), TYPE_VIRTIO_CCW_DEVICE)
#define VIRTIO_CCW_DEVICE_GET_CLASS(obj) \
OBJECT_GET_CLASS(VirtIOCCWDeviceClass, (obj), TYPE_VIRTIO_CCW_DEVICE)
typedef struct VirtioBusState VirtioCcwBusState;
typedef struct VirtioBusClass VirtioCcwBusClass;
#define TYPE_VIRTIO_CCW_BUS "virtio-ccw-bus"
#define VIRTIO_CCW_BUS(obj) \
OBJECT_CHECK(VirtioCcwBus, (obj), TYPE_VIRTIO_CCW_BUS)
#define VIRTIO_CCW_BUS_GET_CLASS(obj) \
OBJECT_CHECK(VirtioCcwBusState, (obj), TYPE_VIRTIO_CCW_BUS)
#define VIRTIO_CCW_BUS_CLASS(klass) \
OBJECT_CLASS_CHECK(VirtioCcwBusClass, klass, TYPE_VIRTIO_CCW_BUS)
typedef struct VirtioCcwDevice VirtioCcwDevice;
void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev);
typedef struct VirtIOCCWDeviceClass {
DeviceClass parent_class;
int (*init)(VirtioCcwDevice *dev);
int (*exit)(VirtioCcwDevice *dev);
} VirtIOCCWDeviceClass;
/* Change here if we want to support more feature bits. */
#define VIRTIO_CCW_FEATURE_SIZE 1
struct VirtioCcwDevice {
DeviceState parent_obj;
SubchDev *sch;
VirtIODevice *vdev;
char *bus_id;
VirtIOBlkConf blk;
NICConf nic;
uint32_t host_features[VIRTIO_CCW_FEATURE_SIZE];
virtio_serial_conf serial;
virtio_net_conf net;
VirtIOSCSIConf scsi;
VirtioBusState bus;
/* Guest provided values: */
hwaddr indicators;
hwaddr indicators2;
};
/* virtual css bus type */
typedef struct VirtualCssBus {
BusState parent_obj;
} VirtualCssBus;
#define TYPE_VIRTUAL_CSS_BUS "virtual-css-bus"
#define VIRTUAL_CSS_BUS(obj) \
OBJECT_CHECK(VirtualCssBus, (obj), TYPE_VIRTUAL_CSS_BUS)
VirtualCssBus *virtual_css_bus_init(void);
void virtio_ccw_device_update_status(SubchDev *sch);
VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch);
#endif

2
target-s390x/Makefile.objs
View File

@ -1,4 +1,4 @@
obj-y += translate.o helper.o cpu.o interrupt.o
obj-y += int_helper.o fpu_helper.o cc_helper.o mem_helper.o misc_helper.o
obj-$(CONFIG_SOFTMMU) += machine.o
obj-$(CONFIG_SOFTMMU) += machine.o ioinst.o
obj-$(CONFIG_KVM) += kvm.o

247
target-s390x/cpu.h
View File

@ -50,6 +50,11 @@
#define MMU_USER_IDX 1
#define MAX_EXT_QUEUE 16
#define MAX_IO_QUEUE 16
#define MAX_MCHK_QUEUE 16
#define PSW_MCHK_MASK 0x0004000000000000
#define PSW_IO_MASK 0x0200000000000000
typedef struct PSW {
uint64_t mask;
@ -62,6 +67,17 @@ typedef struct ExtQueue {
uint32_t param64;
} ExtQueue;
typedef struct IOIntQueue {
uint16_t id;
uint16_t nr;
uint32_t parm;
uint32_t word;
} IOIntQueue;
typedef struct MchkQueue {
uint16_t type;
} MchkQueue;
typedef struct CPUS390XState {
uint64_t regs[16]; /* GP registers */
CPU_DoubleU fregs[16]; /* FP registers */
@ -93,9 +109,17 @@ typedef struct CPUS390XState {
uint64_t cregs[16]; /* control registers */
ExtQueue ext_queue[MAX_EXT_QUEUE];
int pending_int;
IOIntQueue io_queue[MAX_IO_QUEUE][8];
MchkQueue mchk_queue[MAX_MCHK_QUEUE];
int pending_int;
int ext_index;
int io_index[8];
int mchk_index;
uint64_t ckc;
uint64_t cputm;
uint32_t todpr;
CPU_COMMON
@ -123,6 +147,9 @@ static inline void cpu_clone_regs(CPUS390XState *env, target_ulong newsp)
}
#endif
/* distinguish between 24 bit and 31 bit addressing */
#define HIGH_ORDER_BIT 0x80000000
/* Interrupt Codes */
/* Program Interrupts */
#define PGM_OPERATION 0x0001
@ -300,8 +327,27 @@ int cpu_s390x_handle_mmu_fault (CPUS390XState *env, target_ulong address, int rw
int mmu_idx);
#define cpu_handle_mmu_fault cpu_s390x_handle_mmu_fault
#include "ioinst.h"
#ifndef CONFIG_USER_ONLY
void *s390_cpu_physical_memory_map(CPUS390XState *env, hwaddr addr, hwaddr *len,
int is_write);
void s390_cpu_physical_memory_unmap(CPUS390XState *env, void *addr, hwaddr len,
int is_write);
static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb)
{
hwaddr addr = 0;
uint8_t reg;
reg = ipb >> 28;
if (reg > 0) {
addr = env->regs[reg];
}
addr += (ipb >> 16) & 0xfff;
return addr;
}
void s390x_tod_timer(void *opaque);
void s390x_cpu_timer(void *opaque);
@ -351,6 +397,114 @@ static inline unsigned s390_del_running_cpu(CPUS390XState *env)
void cpu_lock(void);
void cpu_unlock(void);
typedef struct SubchDev SubchDev;
#ifndef CONFIG_USER_ONLY
SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,
uint16_t schid);
bool css_subch_visible(SubchDev *sch);
void css_conditional_io_interrupt(SubchDev *sch);
int css_do_stsch(SubchDev *sch, SCHIB *schib);
bool css_schid_final(uint8_t cssid, uint8_t ssid, uint16_t schid);
int css_do_msch(SubchDev *sch, SCHIB *schib);
int css_do_xsch(SubchDev *sch);
int css_do_csch(SubchDev *sch);
int css_do_hsch(SubchDev *sch);
int css_do_ssch(SubchDev *sch, ORB *orb);
int css_do_tsch(SubchDev *sch, IRB *irb);
int css_do_stcrw(CRW *crw);
int css_do_tpi(IOIntCode *int_code, int lowcore);
int css_collect_chp_desc(int m, uint8_t cssid, uint8_t f_chpid, uint8_t l_chpid,
int rfmt, void *buf);
void css_do_schm(uint8_t mbk, int update, int dct, uint64_t mbo);
int css_enable_mcsse(void);
int css_enable_mss(void);
int css_do_rsch(SubchDev *sch);
int css_do_rchp(uint8_t cssid, uint8_t chpid);
bool css_present(uint8_t cssid);
#else
static inline SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,
uint16_t schid)
{
return NULL;
}
static inline bool css_subch_visible(SubchDev *sch)
{
return false;
}
static inline void css_conditional_io_interrupt(SubchDev *sch)
{
}
static inline int css_do_stsch(SubchDev *sch, SCHIB *schib)
{
return -ENODEV;
}
static inline bool css_schid_final(uint8_t cssid, uint8_t ssid, uint16_t schid)
{
return true;
}
static inline int css_do_msch(SubchDev *sch, SCHIB *schib)
{
return -ENODEV;
}
static inline int css_do_xsch(SubchDev *sch)
{
return -ENODEV;
}
static inline int css_do_csch(SubchDev *sch)
{
return -ENODEV;
}
static inline int css_do_hsch(SubchDev *sch)
{
return -ENODEV;
}
static inline int css_do_ssch(SubchDev *sch, ORB *orb)
{
return -ENODEV;
}
static inline int css_do_tsch(SubchDev *sch, IRB *irb)
{
return -ENODEV;
}
static inline int css_do_stcrw(CRW *crw)
{
return 1;
}
static inline int css_do_tpi(IOIntCode *int_code, int lowcore)
{
return 0;
}
static inline int css_collect_chp_desc(int m, uint8_t cssid, uint8_t f_chpid,
int rfmt, uint8_t l_chpid, void *buf)
{
return 0;
}
static inline void css_do_schm(uint8_t mbk, int update, int dct, uint64_t mbo)
{
}
static inline int css_enable_mss(void)
{
return -EINVAL;
}
static inline int css_enable_mcsse(void)
{
return -EINVAL;
}
static inline int css_do_rsch(SubchDev *sch)
{
return -ENODEV;
}
static inline int css_do_rchp(uint8_t cssid, uint8_t chpid)
{
return -ENODEV;
}
static inline bool css_present(uint8_t cssid)
{
return false;
}
#endif
static inline void cpu_set_tls(CPUS390XState *env, target_ulong newtls)
{
env->aregs[0] = newtls >> 32;
@ -370,10 +524,14 @@ void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf);
#define EXCP_EXT 1 /* external interrupt */
#define EXCP_SVC 2 /* supervisor call (syscall) */
#define EXCP_PGM 3 /* program interruption */
#define EXCP_IO 7 /* I/O interrupt */
#define EXCP_MCHK 8 /* machine check */
#define INTERRUPT_EXT (1 << 0)
#define INTERRUPT_TOD (1 << 1)
#define INTERRUPT_CPUTIMER (1 << 2)
#define INTERRUPT_IO (1 << 3)
#define INTERRUPT_MCHK (1 << 4)
/* Program Status Word. */
#define S390_PSWM_REGNUM 0
@ -836,6 +994,45 @@ static inline void cpu_inject_ext(CPUS390XState *env, uint32_t code, uint32_t pa
cpu_interrupt(env, CPU_INTERRUPT_HARD);
}
static inline void cpu_inject_io(CPUS390XState *env, uint16_t subchannel_id,
uint16_t subchannel_number,
uint32_t io_int_parm, uint32_t io_int_word)
{
int isc = ffs(io_int_word << 2) - 1;
if (env->io_index[isc] == MAX_IO_QUEUE - 1) {
/* ugh - can't queue anymore. Let's drop. */
return;
}
env->io_index[isc]++;
assert(env->io_index[isc] < MAX_IO_QUEUE);
env->io_queue[env->io_index[isc]][isc].id = subchannel_id;
env->io_queue[env->io_index[isc]][isc].nr = subchannel_number;
env->io_queue[env->io_index[isc]][isc].parm = io_int_parm;
env->io_queue[env->io_index[isc]][isc].word = io_int_word;
env->pending_int |= INTERRUPT_IO;
cpu_interrupt(env, CPU_INTERRUPT_HARD);
}
static inline void cpu_inject_crw_mchk(CPUS390XState *env)
{
if (env->mchk_index == MAX_MCHK_QUEUE - 1) {
/* ugh - can't queue anymore. Let's drop. */
return;
}
env->mchk_index++;
assert(env->mchk_index < MAX_MCHK_QUEUE);
env->mchk_queue[env->mchk_index].type = 1;
env->pending_int |= INTERRUPT_MCHK;
cpu_interrupt(env, CPU_INTERRUPT_HARD);
}
static inline bool cpu_has_work(CPUState *cpu)
{
CPUS390XState *env = &S390_CPU(cpu)->env;
@ -859,4 +1056,52 @@ void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp,
uintptr_t retaddr);
#include <sysemu/kvm.h>
#ifdef CONFIG_KVM
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);
void kvm_s390_crw_mchk(S390CPU *cpu);
void kvm_s390_enable_css_support(S390CPU *cpu);
#else
static inline 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)
{
}
static inline void kvm_s390_crw_mchk(S390CPU *cpu)
{
}
static inline void kvm_s390_enable_css_support(S390CPU *cpu)
{
}
#endif
static inline void s390_io_interrupt(S390CPU *cpu,
uint16_t subchannel_id,
uint16_t subchannel_nr,
uint32_t io_int_parm,
uint32_t io_int_word)
{
if (kvm_enabled()) {
kvm_s390_io_interrupt(cpu, subchannel_id, subchannel_nr, io_int_parm,
io_int_word);
} else {
cpu_inject_io(&cpu->env, subchannel_id, subchannel_nr, io_int_parm,
io_int_word);
}
}
static inline void s390_crw_mchk(S390CPU *cpu)
{
if (kvm_enabled()) {
kvm_s390_crw_mchk(cpu);
} else {
cpu_inject_crw_mchk(&cpu->env);
}
}
#endif

200
target-s390x/helper.c
View File

@ -471,13 +471,56 @@ static uint64_t get_psw_mask(CPUS390XState *env)
return r;
}
static LowCore *cpu_map_lowcore(CPUS390XState *env)
{
LowCore *lowcore;
hwaddr len = sizeof(LowCore);
lowcore = cpu_physical_memory_map(env->psa, &len, 1);
if (len < sizeof(LowCore)) {
cpu_abort(env, "Could not map lowcore\n");
}
return lowcore;
}
static void cpu_unmap_lowcore(LowCore *lowcore)
{
cpu_physical_memory_unmap(lowcore, sizeof(LowCore), 1, sizeof(LowCore));
}
void *s390_cpu_physical_memory_map(CPUS390XState *env, hwaddr addr, hwaddr *len,
int is_write)
{
hwaddr start = addr;
/* Mind the prefix area. */
if (addr < 8192) {
/* Map the lowcore. */
start += env->psa;
*len = MIN(*len, 8192 - addr);
} else if ((addr >= env->psa) && (addr < env->psa + 8192)) {
/* Map the 0 page. */
start -= env->psa;
*len = MIN(*len, 8192 - start);
}
return cpu_physical_memory_map(start, len, is_write);
}
void s390_cpu_physical_memory_unmap(CPUS390XState *env, void *addr, hwaddr len,
int is_write)
{
cpu_physical_memory_unmap(addr, len, is_write, len);
}
static void do_svc_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
hwaddr len = TARGET_PAGE_SIZE;
lowcore = cpu_physical_memory_map(env->psa, &len, 1);
lowcore = cpu_map_lowcore(env);
lowcore->svc_code = cpu_to_be16(env->int_svc_code);
lowcore->svc_ilen = cpu_to_be16(env->int_svc_ilen);
@ -486,7 +529,7 @@ static void do_svc_interrupt(CPUS390XState *env)
mask = be64_to_cpu(lowcore->svc_new_psw.mask);
addr = be64_to_cpu(lowcore->svc_new_psw.addr);
cpu_physical_memory_unmap(lowcore, len, 1, len);
cpu_unmap_lowcore(lowcore);
load_psw(env, mask, addr);
}
@ -495,7 +538,6 @@ static void do_program_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
hwaddr len = TARGET_PAGE_SIZE;
int ilen = env->int_pgm_ilen;
switch (ilen) {
@ -513,7 +555,7 @@ static void do_program_interrupt(CPUS390XState *env)
qemu_log_mask(CPU_LOG_INT, "%s: code=0x%x ilen=%d\n",
__func__, env->int_pgm_code, ilen);
lowcore = cpu_physical_memory_map(env->psa, &len, 1);
lowcore = cpu_map_lowcore(env);
lowcore->pgm_ilen = cpu_to_be16(ilen);
lowcore->pgm_code = cpu_to_be16(env->int_pgm_code);
@ -522,7 +564,7 @@ static void do_program_interrupt(CPUS390XState *env)
mask = be64_to_cpu(lowcore->program_new_psw.mask);
addr = be64_to_cpu(lowcore->program_new_psw.addr);
cpu_physical_memory_unmap(lowcore, len, 1, len);
cpu_unmap_lowcore(lowcore);
DPRINTF("%s: %x %x %" PRIx64 " %" PRIx64 "\n", __func__,
env->int_pgm_code, ilen, env->psw.mask,
@ -537,7 +579,6 @@ static void do_ext_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
hwaddr len = TARGET_PAGE_SIZE;
ExtQueue *q;
if (!(env->psw.mask & PSW_MASK_EXT)) {
@ -549,7 +590,7 @@ static void do_ext_interrupt(CPUS390XState *env)
}
q = &env->ext_queue[env->ext_index];
lowcore = cpu_physical_memory_map(env->psa, &len, 1);
lowcore = cpu_map_lowcore(env);
lowcore->ext_int_code = cpu_to_be16(q->code);
lowcore->ext_params = cpu_to_be32(q->param);
@ -560,7 +601,7 @@ static void do_ext_interrupt(CPUS390XState *env)
mask = be64_to_cpu(lowcore->external_new_psw.mask);
addr = be64_to_cpu(lowcore->external_new_psw.addr);
cpu_physical_memory_unmap(lowcore, len, 1, len);
cpu_unmap_lowcore(lowcore);
env->ext_index--;
if (env->ext_index == -1) {
@ -573,12 +614,140 @@ static void do_ext_interrupt(CPUS390XState *env)
load_psw(env, mask, addr);
}
static void do_io_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
IOIntQueue *q;
uint8_t isc;
int disable = 1;
int found = 0;
if (!(env->psw.mask & PSW_MASK_IO)) {
cpu_abort(env, "I/O int w/o I/O mask\n");
}
for (isc = 0; isc < ARRAY_SIZE(env->io_index); isc++) {
if (env->io_index[isc] < 0) {
continue;
}
if (env->io_index[isc] > MAX_IO_QUEUE) {
cpu_abort(env, "I/O queue overrun for isc %d: %d\n",
isc, env->io_index[isc]);
}
q = &env->io_queue[env->io_index[isc]][isc];
if (!(env->cregs[6] & q->word)) {
disable = 0;
continue;
}
found = 1;
lowcore = cpu_map_lowcore(env);
lowcore->subchannel_id = cpu_to_be16(q->id);
lowcore->subchannel_nr = cpu_to_be16(q->nr);
lowcore->io_int_parm = cpu_to_be32(q->parm);
lowcore->io_int_word = cpu_to_be32(q->word);
lowcore->io_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->io_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->io_new_psw.mask);
addr = be64_to_cpu(lowcore->io_new_psw.addr);
cpu_unmap_lowcore(lowcore);
env->io_index[isc]--;
if (env->io_index >= 0) {
disable = 0;
}
break;
}
if (disable) {
env->pending_int &= ~INTERRUPT_IO;
}
if (found) {
DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
env->psw.mask, env->psw.addr);
load_psw(env, mask, addr);
}
}
static void do_mchk_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
MchkQueue *q;
int i;
if (!(env->psw.mask & PSW_MASK_MCHECK)) {
cpu_abort(env, "Machine check w/o mchk mask\n");
}
if (env->mchk_index < 0 || env->mchk_index > MAX_MCHK_QUEUE) {
cpu_abort(env, "Mchk queue overrun: %d\n", env->mchk_index);
}
q = &env->mchk_queue[env->mchk_index];
if (q->type != 1) {
/* Don't know how to handle this... */
cpu_abort(env, "Unknown machine check type %d\n", q->type);
}
if (!(env->cregs[14] & (1 << 28))) {
/* CRW machine checks disabled */
return;
}
lowcore = cpu_map_lowcore(env);
for (i = 0; i < 16; i++) {
lowcore->floating_pt_save_area[i] = cpu_to_be64(env->fregs[i].ll);
lowcore->gpregs_save_area[i] = cpu_to_be64(env->regs[i]);
lowcore->access_regs_save_area[i] = cpu_to_be32(env->aregs[i]);
lowcore->cregs_save_area[i] = cpu_to_be64(env->cregs[i]);
}
lowcore->prefixreg_save_area = cpu_to_be32(env->psa);
lowcore->fpt_creg_save_area = cpu_to_be32(env->fpc);
lowcore->tod_progreg_save_area = cpu_to_be32(env->todpr);
lowcore->cpu_timer_save_area[0] = cpu_to_be32(env->cputm >> 32);
lowcore->cpu_timer_save_area[1] = cpu_to_be32((uint32_t)env->cputm);
lowcore->clock_comp_save_area[0] = cpu_to_be32(env->ckc >> 32);
lowcore->clock_comp_save_area[1] = cpu_to_be32((uint32_t)env->ckc);
lowcore->mcck_interruption_code[0] = cpu_to_be32(0x00400f1d);
lowcore->mcck_interruption_code[1] = cpu_to_be32(0x40330000);
lowcore->mcck_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->mcck_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->mcck_new_psw.mask);
addr = be64_to_cpu(lowcore->mcck_new_psw.addr);
cpu_unmap_lowcore(lowcore);
env->mchk_index--;
if (env->mchk_index == -1) {
env->pending_int &= ~INTERRUPT_MCHK;
}
DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
env->psw.mask, env->psw.addr);
load_psw(env, mask, addr);
}
void do_interrupt(CPUS390XState *env)
{
qemu_log_mask(CPU_LOG_INT, "%s: %d at pc=%" PRIx64 "\n",
__func__, env->exception_index, env->psw.addr);
s390_add_running_cpu(env);
/* handle machine checks */
if ((env->psw.mask & PSW_MASK_MCHECK) &&
(env->exception_index == -1)) {
if (env->pending_int & INTERRUPT_MCHK) {
env->exception_index = EXCP_MCHK;
}
}
/* handle external interrupts */
if ((env->psw.mask & PSW_MASK_EXT) &&
env->exception_index == -1) {
@ -597,6 +766,13 @@ void do_interrupt(CPUS390XState *env)
env->pending_int &= ~INTERRUPT_TOD;
}
}
/* handle I/O interrupts */
if ((env->psw.mask & PSW_MASK_IO) &&
(env->exception_index == -1)) {
if (env->pending_int & INTERRUPT_IO) {
env->exception_index = EXCP_IO;
}
}
switch (env->exception_index) {
case EXCP_PGM:
@ -608,6 +784,12 @@ void do_interrupt(CPUS390XState *env)
case EXCP_EXT:
do_ext_interrupt(env);
break;
case EXCP_IO:
do_io_interrupt(env);
break;
case EXCP_MCHK:
do_mchk_interrupt(env);
break;
}
env->exception_index = -1;

761
target-s390x/ioinst.c Normal file
View File

@ -0,0 +1,761 @@
/*
* I/O instructions for S/390
*
* Copyright 2012 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#include <sys/types.h>
#include "cpu.h"
#include "ioinst.h"
#include "trace.h"
int ioinst_disassemble_sch_ident(uint32_t value, int *m, int *cssid, int *ssid,
int *schid)
{
if (!IOINST_SCHID_ONE(value)) {
return -EINVAL;
}
if (!IOINST_SCHID_M(value)) {
if (IOINST_SCHID_CSSID(value)) {
return -EINVAL;
}
*cssid = 0;
*m = 0;
} else {
*cssid = IOINST_SCHID_CSSID(value);
*m = 1;
}
*ssid = IOINST_SCHID_SSID(value);
*schid = IOINST_SCHID_NR(value);
return 0;
}
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;
}
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;
}
int ioinst_handle_hsch(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("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;
}
return cc;
}
static int ioinst_schib_valid(SCHIB *schib)
{
if ((schib->pmcw.flags & PMCW_FLAGS_MASK_INVALID) ||
(schib->pmcw.chars & PMCW_CHARS_MASK_INVALID)) {
return 0;
}
/* Disallow extended measurements for now. */
if (schib->pmcw.chars & PMCW_CHARS_MASK_XMWME) {
return 0;
}
return 1;
}
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);
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
trace_ioinst_sch_id("msch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb);
schib = s390_cpu_physical_memory_map(env, addr, &len, 0);
if (!schib || len != sizeof(*schib)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
cc = -EIO;
goto out;
}
if (!ioinst_schib_valid(schib)) {
program_interrupt(env, PGM_OPERAND, 2);
cc = -EIO;
goto out;
}
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;
}
static void copy_orb_from_guest(ORB *dest, const ORB *src)
{
dest->intparm = be32_to_cpu(src->intparm);
dest->ctrl0 = be16_to_cpu(src->ctrl0);
dest->lpm = src->lpm;
dest->ctrl1 = src->ctrl1;
dest->cpa = be32_to_cpu(src->cpa);
}
static int ioinst_orb_valid(ORB *orb)
{
if ((orb->ctrl0 & ORB_CTRL0_MASK_INVALID) ||
(orb->ctrl1 & ORB_CTRL1_MASK_INVALID)) {
return 0;
}
if ((orb->cpa & HIGH_ORDER_BIT) != 0) {
return 0;
}
return 1;
}
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);
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
trace_ioinst_sch_id("ssch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb);
orig_orb = s390_cpu_physical_memory_map(env, addr, &len, 0);
if (!orig_orb || len != sizeof(*orig_orb)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
cc = -EIO;
goto out;
}
copy_orb_from_guest(&orb, orig_orb);
if (!ioinst_orb_valid(&orb)) {
program_interrupt(env, PGM_OPERAND, 2);
cc = -EIO;
goto out;
}
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;
}
int ioinst_handle_stcrw(CPUS390XState *env, uint32_t ipb)
{
CRW *crw;
uint64_t addr;
int cc;
hwaddr len = sizeof(*crw);
addr = decode_basedisp_s(env, ipb);
crw = s390_cpu_physical_memory_map(env, addr, &len, 1);
if (!crw || len != sizeof(*crw)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
cc = -EIO;
goto out;
}
cc = css_do_stcrw(crw);
/* 0 - crw stored, 1 - zeroes stored */
out:
s390_cpu_physical_memory_unmap(env, crw, len, 1);
return cc;
}
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);
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
trace_ioinst_sch_id("stsch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb);
schib = s390_cpu_physical_memory_map(env, addr, &len, 1);
if (!schib || len != sizeof(*schib)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
cc = -EIO;
goto out;
}
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(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;
}
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);
irb = s390_cpu_physical_memory_map(env, addr, &len, 1);
if (!irb || len != sizeof(*irb)) {
program_interrupt(env, PGM_SPECIFICATION, 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;
}
typedef struct ChscReq {
uint16_t len;
uint16_t command;
uint32_t param0;
uint32_t param1;
uint32_t param2;
} QEMU_PACKED ChscReq;
typedef struct ChscResp {
uint16_t len;
uint16_t code;
uint32_t param;
char data[0];
} QEMU_PACKED ChscResp;
#define CHSC_MIN_RESP_LEN 0x0008
#define CHSC_SCPD 0x0002
#define CHSC_SCSC 0x0010
#define CHSC_SDA 0x0031
#define CHSC_SCPD_0_M 0x20000000
#define CHSC_SCPD_0_C 0x10000000
#define CHSC_SCPD_0_FMT 0x0f000000
#define CHSC_SCPD_0_CSSID 0x00ff0000
#define CHSC_SCPD_0_RFMT 0x00000f00
#define CHSC_SCPD_0_RES 0xc000f000
#define CHSC_SCPD_1_RES 0xffffff00
#define CHSC_SCPD_01_CHPID 0x000000ff
static void ioinst_handle_chsc_scpd(ChscReq *req, ChscResp *res)
{
uint16_t len = be16_to_cpu(req->len);
uint32_t param0 = be32_to_cpu(req->param0);
uint32_t param1 = be32_to_cpu(req->param1);
uint16_t resp_code;
int rfmt;
uint16_t cssid;
uint8_t f_chpid, l_chpid;
int desc_size;
int m;
rfmt = (param0 & CHSC_SCPD_0_RFMT) >> 8;
if ((rfmt == 0) || (rfmt == 1)) {
rfmt = !!(param0 & CHSC_SCPD_0_C);
}
if ((len != 0x0010) || (param0 & CHSC_SCPD_0_RES) ||
(param1 & CHSC_SCPD_1_RES) || req->param2) {
resp_code = 0x0003;
goto out_err;
}
if (param0 & CHSC_SCPD_0_FMT) {
resp_code = 0x0007;
goto out_err;
}
cssid = (param0 & CHSC_SCPD_0_CSSID) >> 16;
m = param0 & CHSC_SCPD_0_M;
if (cssid != 0) {
if (!m || !css_present(cssid)) {
resp_code = 0x0008;
goto out_err;
}
}
f_chpid = param0 & CHSC_SCPD_01_CHPID;
l_chpid = param1 & CHSC_SCPD_01_CHPID;
if (l_chpid < f_chpid) {
resp_code = 0x0003;
goto out_err;
}
/* css_collect_chp_desc() is endian-aware */
desc_size = css_collect_chp_desc(m, cssid, f_chpid, l_chpid, rfmt,
&res->data);
res->code = cpu_to_be16(0x0001);
res->len = cpu_to_be16(8 + desc_size);
res->param = cpu_to_be32(rfmt);
return;
out_err:
res->code = cpu_to_be16(resp_code);
res->len = cpu_to_be16(CHSC_MIN_RESP_LEN);
res->param = cpu_to_be32(rfmt);
}
#define CHSC_SCSC_0_M 0x20000000
#define CHSC_SCSC_0_FMT 0x000f0000
#define CHSC_SCSC_0_CSSID 0x0000ff00
#define CHSC_SCSC_0_RES 0xdff000ff
static void ioinst_handle_chsc_scsc(ChscReq *req, ChscResp *res)
{
uint16_t len = be16_to_cpu(req->len);
uint32_t param0 = be32_to_cpu(req->param0);
uint8_t cssid;
uint16_t resp_code;
uint32_t general_chars[510];
uint32_t chsc_chars[508];
if (len != 0x0010) {
resp_code = 0x0003;
goto out_err;
}
if (param0 & CHSC_SCSC_0_FMT) {
resp_code = 0x0007;
goto out_err;
}
cssid = (param0 & CHSC_SCSC_0_CSSID) >> 8;
if (cssid != 0) {
if (!(param0 & CHSC_SCSC_0_M) || !css_present(cssid)) {
resp_code = 0x0008;
goto out_err;
}
}
if ((param0 & CHSC_SCSC_0_RES) || req->param1 || req->param2) {
resp_code = 0x0003;
goto out_err;
}
res->code = cpu_to_be16(0x0001);
res->len = cpu_to_be16(4080);
res->param = 0;
memset(general_chars, 0, sizeof(general_chars));
memset(chsc_chars, 0, sizeof(chsc_chars));
general_chars[0] = cpu_to_be32(0x03000000);
general_chars[1] = cpu_to_be32(0x00059000);
chsc_chars[0] = cpu_to_be32(0x40000000);
chsc_chars[3] = cpu_to_be32(0x00040000);
memcpy(res->data, general_chars, sizeof(general_chars));
memcpy(res->data + sizeof(general_chars), chsc_chars, sizeof(chsc_chars));
return;
out_err:
res->code = cpu_to_be16(resp_code);
res->len = cpu_to_be16(CHSC_MIN_RESP_LEN);
res->param = 0;
}
#define CHSC_SDA_0_FMT 0x0f000000
#define CHSC_SDA_0_OC 0x0000ffff
#define CHSC_SDA_0_RES 0xf0ff0000
#define CHSC_SDA_OC_MCSSE 0x0
#define CHSC_SDA_OC_MSS 0x2
static void ioinst_handle_chsc_sda(ChscReq *req, ChscResp *res)
{
uint16_t resp_code = 0x0001;
uint16_t len = be16_to_cpu(req->len);
uint32_t param0 = be32_to_cpu(req->param0);
uint16_t oc;
int ret;
if ((len != 0x0400) || (param0 & CHSC_SDA_0_RES)) {
resp_code = 0x0003;
goto out;
}
if (param0 & CHSC_SDA_0_FMT) {
resp_code = 0x0007;
goto out;
}
oc = param0 & CHSC_SDA_0_OC;
switch (oc) {
case CHSC_SDA_OC_MCSSE:
ret = css_enable_mcsse();
if (ret == -EINVAL) {
resp_code = 0x0101;
goto out;
}
break;
case CHSC_SDA_OC_MSS:
ret = css_enable_mss();
if (ret == -EINVAL) {
resp_code = 0x0101;
goto out;
}
break;
default:
resp_code = 0x0003;
goto out;
}
out:
res->code = cpu_to_be16(resp_code);
res->len = cpu_to_be16(CHSC_MIN_RESP_LEN);
res->param = 0;
}
static void ioinst_handle_chsc_unimplemented(ChscResp *res)
{
res->len = cpu_to_be16(CHSC_MIN_RESP_LEN);
res->code = cpu_to_be16(0x0004);
res->param = 0;
}
int ioinst_handle_chsc(CPUS390XState *env, uint32_t ipb)
{
ChscReq *req;
ChscResp *res;
uint64_t addr;
int reg;
uint16_t len;
uint16_t command;
hwaddr map_size = TARGET_PAGE_SIZE;
int ret = 0;
trace_ioinst("chsc");
reg = (ipb >> 20) & 0x00f;
addr = env->regs[reg];
/* Page boundary? */
if (addr & 0xfff) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
req = s390_cpu_physical_memory_map(env, addr, &map_size, 1);
if (!req || map_size != TARGET_PAGE_SIZE) {
program_interrupt(env, PGM_SPECIFICATION, 2);
ret = -EIO;
goto out;
}
len = be16_to_cpu(req->len);
/* Length field valid? */
if ((len < 16) || (len > 4088) || (len & 7)) {
program_interrupt(env, PGM_OPERAND, 2);
ret = -EIO;
goto out;
}
memset((char *)req + len, 0, TARGET_PAGE_SIZE - len);
res = (void *)((char *)req + len);
command = be16_to_cpu(req->command);
trace_ioinst_chsc_cmd(command, len);
switch (command) {
case CHSC_SCSC:
ioinst_handle_chsc_scsc(req, res);
break;
case CHSC_SCPD:
ioinst_handle_chsc_scpd(req, res);
break;
case CHSC_SDA:
ioinst_handle_chsc_sda(req, res);
break;
default:
ioinst_handle_chsc_unimplemented(res);
break;
}
out:
s390_cpu_physical_memory_unmap(env, req, map_size, 1);
return ret;
}
int ioinst_handle_tpi(CPUS390XState *env, uint32_t ipb)
{
uint64_t addr;
int lowcore;
IOIntCode *int_code;
hwaddr len, orig_len;
int ret;
trace_ioinst("tpi");
addr = decode_basedisp_s(env, ipb);
lowcore = addr ? 0 : 1;
len = lowcore ? 8 /* two words */ : 12 /* three words */;
orig_len = len;
int_code = s390_cpu_physical_memory_map(env, addr, &len, 1);
if (!int_code || (len != orig_len)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
ret = -EIO;
goto out;
}
ret = css_do_tpi(int_code, lowcore);
out:
s390_cpu_physical_memory_unmap(env, int_code, len, 1);
return ret;
}
#define SCHM_REG1_RES(_reg) (_reg & 0x000000000ffffffc)
#define SCHM_REG1_MBK(_reg) ((_reg & 0x00000000f0000000) >> 28)
#define SCHM_REG1_UPD(_reg) ((_reg & 0x0000000000000002) >> 1)
#define SCHM_REG1_DCT(_reg) (_reg & 0x0000000000000001)
int ioinst_handle_schm(CPUS390XState *env, uint64_t reg1, uint64_t reg2,
uint32_t ipb)
{
uint8_t mbk;
int update;
int dct;
trace_ioinst("schm");
if (SCHM_REG1_RES(reg1)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
mbk = SCHM_REG1_MBK(reg1);
update = SCHM_REG1_UPD(reg1);
dct = SCHM_REG1_DCT(reg1);
if (update && (reg2 & 0x0000000000000fff)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
css_do_schm(mbk, update, dct, update ? reg2 : 0);
return 0;
}
int ioinst_handle_rsch(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("rsch", cssid, ssid, schid);
sch = css_find_subch(m, cssid, ssid, schid);
if (sch && css_subch_visible(sch)) {
ret = css_do_rsch(sch);
}
switch (ret) {
case -ENODEV:
cc = 3;
break;
case -EINVAL:
cc = 2;
break;
case 0:
cc = 0;
break;
default:
cc = 1;
break;
}
return cc;
}
#define RCHP_REG1_RES(_reg) (_reg & 0x00000000ff00ff00)
#define RCHP_REG1_CSSID(_reg) ((_reg & 0x0000000000ff0000) >> 16)
#define RCHP_REG1_CHPID(_reg) (_reg & 0x00000000000000ff)
int ioinst_handle_rchp(CPUS390XState *env, uint64_t reg1)
{
int cc;
uint8_t cssid;
uint8_t chpid;
int ret;
if (RCHP_REG1_RES(reg1)) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
cssid = RCHP_REG1_CSSID(reg1);
chpid = RCHP_REG1_CHPID(reg1);
trace_ioinst_chp_id("rchp", cssid, chpid);
ret = css_do_rchp(cssid, chpid);
switch (ret) {
case -ENODEV:
cc = 3;
break;
case -EBUSY:
cc = 2;
break;
case 0:
cc = 0;
break;
default:
/* Invalid channel subsystem. */
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
return cc;
}
#define SAL_REG1_INVALID(_reg) (_reg & 0x0000000080000000)
int ioinst_handle_sal(CPUS390XState *env, uint64_t reg1)
{
/* We do not provide address limit checking, so let's suppress it. */
if (SAL_REG1_INVALID(reg1) || reg1 & 0x000000000000ffff) {
program_interrupt(env, PGM_OPERAND, 2);
return -EIO;
}
return 0;
}

230
target-s390x/ioinst.h Normal file
View File

@ -0,0 +1,230 @@
/*
* S/390 channel I/O instructions
*
* Copyright 2012 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef IOINST_S390X_H
#define IOINST_S390X_H
/*
* Channel I/O related definitions, as defined in the Principles
* Of Operation (and taken from the Linux implementation).
*/
/* subchannel status word (command mode only) */
typedef struct SCSW {
uint16_t flags;
uint16_t ctrl;
uint32_t cpa;
uint8_t dstat;
uint8_t cstat;
uint16_t count;
} QEMU_PACKED SCSW;
#define SCSW_FLAGS_MASK_KEY 0xf000
#define SCSW_FLAGS_MASK_SCTL 0x0800
#define SCSW_FLAGS_MASK_ESWF 0x0400
#define SCSW_FLAGS_MASK_CC 0x0300
#define SCSW_FLAGS_MASK_FMT 0x0080
#define SCSW_FLAGS_MASK_PFCH 0x0040
#define SCSW_FLAGS_MASK_ISIC 0x0020
#define SCSW_FLAGS_MASK_ALCC 0x0010
#define SCSW_FLAGS_MASK_SSI 0x0008
#define SCSW_FLAGS_MASK_ZCC 0x0004
#define SCSW_FLAGS_MASK_ECTL 0x0002
#define SCSW_FLAGS_MASK_PNO 0x0001
#define SCSW_CTRL_MASK_FCTL 0x7000
#define SCSW_CTRL_MASK_ACTL 0x0fe0
#define SCSW_CTRL_MASK_STCTL 0x001f
#define SCSW_FCTL_CLEAR_FUNC 0x1000
#define SCSW_FCTL_HALT_FUNC 0x2000
#define SCSW_FCTL_START_FUNC 0x4000
#define SCSW_ACTL_SUSP 0x0020
#define SCSW_ACTL_DEVICE_ACTIVE 0x0040
#define SCSW_ACTL_SUBCH_ACTIVE 0x0080
#define SCSW_ACTL_CLEAR_PEND 0x0100
#define SCSW_ACTL_HALT_PEND 0x0200
#define SCSW_ACTL_START_PEND 0x0400
#define SCSW_ACTL_RESUME_PEND 0x0800
#define SCSW_STCTL_STATUS_PEND 0x0001
#define SCSW_STCTL_SECONDARY 0x0002
#define SCSW_STCTL_PRIMARY 0x0004
#define SCSW_STCTL_INTERMEDIATE 0x0008
#define SCSW_STCTL_ALERT 0x0010
#define SCSW_DSTAT_ATTENTION 0x80
#define SCSW_DSTAT_STAT_MOD 0x40
#define SCSW_DSTAT_CU_END 0x20
#define SCSW_DSTAT_BUSY 0x10
#define SCSW_DSTAT_CHANNEL_END 0x08
#define SCSW_DSTAT_DEVICE_END 0x04
#define SCSW_DSTAT_UNIT_CHECK 0x02
#define SCSW_DSTAT_UNIT_EXCEP 0x01
#define SCSW_CSTAT_PCI 0x80
#define SCSW_CSTAT_INCORR_LEN 0x40
#define SCSW_CSTAT_PROG_CHECK 0x20
#define SCSW_CSTAT_PROT_CHECK 0x10
#define SCSW_CSTAT_DATA_CHECK 0x08
#define SCSW_CSTAT_CHN_CTRL_CHK 0x04
#define SCSW_CSTAT_INTF_CTRL_CHK 0x02
#define SCSW_CSTAT_CHAIN_CHECK 0x01
/* path management control word */
typedef struct PMCW {
uint32_t intparm;
uint16_t flags;
uint16_t devno;
uint8_t lpm;
uint8_t pnom;
uint8_t lpum;
uint8_t pim;
uint16_t mbi;
uint8_t pom;
uint8_t pam;
uint8_t chpid[8];
uint32_t chars;
} QEMU_PACKED PMCW;
#define PMCW_FLAGS_MASK_QF 0x8000
#define PMCW_FLAGS_MASK_W 0x4000
#define PMCW_FLAGS_MASK_ISC 0x3800
#define PMCW_FLAGS_MASK_ENA 0x0080
#define PMCW_FLAGS_MASK_LM 0x0060
#define PMCW_FLAGS_MASK_MME 0x0018
#define PMCW_FLAGS_MASK_MP 0x0004
#define PMCW_FLAGS_MASK_TF 0x0002
#define PMCW_FLAGS_MASK_DNV 0x0001
#define PMCW_FLAGS_MASK_INVALID 0x0700
#define PMCW_CHARS_MASK_ST 0x00e00000
#define PMCW_CHARS_MASK_MBFC 0x00000004
#define PMCW_CHARS_MASK_XMWME 0x00000002
#define PMCW_CHARS_MASK_CSENSE 0x00000001
#define PMCW_CHARS_MASK_INVALID 0xff1ffff8
/* subchannel information block */
typedef struct SCHIB {
PMCW pmcw;
SCSW scsw;
uint64_t mba;
uint8_t mda[4];
} QEMU_PACKED SCHIB;
/* interruption response block */
typedef struct IRB {
SCSW scsw;
uint32_t esw[5];
uint32_t ecw[8];
uint32_t emw[8];
} QEMU_PACKED IRB;
/* operation request block */
typedef struct ORB {
uint32_t intparm;
uint16_t ctrl0;
uint8_t lpm;
uint8_t ctrl1;
uint32_t cpa;
} QEMU_PACKED ORB;
#define ORB_CTRL0_MASK_KEY 0xf000
#define ORB_CTRL0_MASK_SPND 0x0800
#define ORB_CTRL0_MASK_STR 0x0400
#define ORB_CTRL0_MASK_MOD 0x0200
#define ORB_CTRL0_MASK_SYNC 0x0100
#define ORB_CTRL0_MASK_FMT 0x0080
#define ORB_CTRL0_MASK_PFCH 0x0040
#define ORB_CTRL0_MASK_ISIC 0x0020
#define ORB_CTRL0_MASK_ALCC 0x0010
#define ORB_CTRL0_MASK_SSIC 0x0008
#define ORB_CTRL0_MASK_C64 0x0002
#define ORB_CTRL0_MASK_I2K 0x0001
#define ORB_CTRL0_MASK_INVALID 0x0004
#define ORB_CTRL1_MASK_ILS 0x80
#define ORB_CTRL1_MASK_MIDAW 0x40
#define ORB_CTRL1_MASK_ORBX 0x01
#define ORB_CTRL1_MASK_INVALID 0x3e
/* channel command word (type 1) */
typedef struct CCW1 {
uint8_t cmd_code;
uint8_t flags;
uint16_t count;
uint32_t cda;
} QEMU_PACKED CCW1;
#define CCW_FLAG_DC 0x80
#define CCW_FLAG_CC 0x40
#define CCW_FLAG_SLI 0x20
#define CCW_FLAG_SKIP 0x10
#define CCW_FLAG_PCI 0x08
#define CCW_FLAG_IDA 0x04
#define CCW_FLAG_SUSPEND 0x02
#define CCW_CMD_NOOP 0x03
#define CCW_CMD_BASIC_SENSE 0x04
#define CCW_CMD_TIC 0x08
#define CCW_CMD_SENSE_ID 0xe4
typedef struct CRW {
uint16_t flags;
uint16_t rsid;
} QEMU_PACKED CRW;
#define CRW_FLAGS_MASK_S 0x4000
#define CRW_FLAGS_MASK_R 0x2000
#define CRW_FLAGS_MASK_C 0x1000
#define CRW_FLAGS_MASK_RSC 0x0f00
#define CRW_FLAGS_MASK_A 0x0080
#define CRW_FLAGS_MASK_ERC 0x003f
#define CRW_ERC_INIT 0x02
#define CRW_ERC_IPI 0x04
#define CRW_RSC_SUBCH 0x3
#define CRW_RSC_CHP 0x4
/* I/O interruption code */
typedef struct IOIntCode {
uint32_t subsys_id;
uint32_t intparm;
uint32_t interrupt_id;
} QEMU_PACKED IOIntCode;
/* schid disintegration */
#define IOINST_SCHID_ONE(_schid) ((_schid & 0x00010000) >> 16)
#define IOINST_SCHID_M(_schid) ((_schid & 0x00080000) >> 19)
#define IOINST_SCHID_CSSID(_schid) ((_schid & 0xff000000) >> 24)
#define IOINST_SCHID_SSID(_schid) ((_schid & 0x00060000) >> 17)
#define IOINST_SCHID_NR(_schid) (_schid & 0x0000ffff)
int ioinst_disassemble_sch_ident(uint32_t value, int *m, int *cssid, int *ssid,
int *schid);
int ioinst_handle_xsch(CPUS390XState *env, uint64_t reg1);
int ioinst_handle_csch(CPUS390XState *env, uint64_t reg1);
int ioinst_handle_hsch(CPUS390XState *env, uint64_t reg1);
int ioinst_handle_msch(CPUS390XState *env, uint64_t reg1, uint32_t ipb);
int ioinst_handle_ssch(CPUS390XState *env, uint64_t reg1, uint32_t ipb);
int ioinst_handle_stcrw(CPUS390XState *env, uint32_t ipb);
int ioinst_handle_stsch(CPUS390XState *env, uint64_t reg1, uint32_t ipb);
int ioinst_handle_tsch(CPUS390XState *env, uint64_t reg1, uint32_t ipb);
int ioinst_handle_chsc(CPUS390XState *env, uint32_t ipb);
int ioinst_handle_tpi(CPUS390XState *env, uint32_t ipb);
int ioinst_handle_schm(CPUS390XState *env, uint64_t reg1, uint64_t reg2,
uint32_t ipb);
int ioinst_handle_rsch(CPUS390XState *env, uint64_t reg1);
int ioinst_handle_rchp(CPUS390XState *env, uint64_t reg1);
int ioinst_handle_sal(CPUS390XState *env, uint64_t reg1);
#endif

239
target-s390x/kvm.c
View File

@ -47,9 +47,29 @@
#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
@ -380,10 +400,123 @@ static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
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) {
@ -391,8 +524,16 @@ static int handle_priv(S390CPU *cpu, struct kvm_run *run, uint8_t 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;
}
@ -533,15 +674,17 @@ static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
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) {
@ -600,6 +743,43 @@ static int handle_intercept(S390CPU *cpu)
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);
@ -612,6 +792,9 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
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;
@ -637,3 +820,33 @@ int kvm_arch_on_sigbus(int code, void *addr)
{
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);
}

18
trace-events
View File

@ -1072,3 +1072,21 @@ xics_ics_eoi(int nr) "ics_eoi: irq %#x"
hbitmap_iter_skip_words(const void *hb, void *hbi, uint64_t pos, unsigned long cur) "hb %p hbi %p pos %"PRId64" cur 0x%lx"
hbitmap_reset(void *hb, uint64_t start, uint64_t count, uint64_t sbit, uint64_t ebit) "hb %p items %"PRIu64",%"PRIu64" bits %"PRIu64"..%"PRIu64
hbitmap_set(void *hb, uint64_t start, uint64_t count, uint64_t sbit, uint64_t ebit) "hb %p items %"PRIu64",%"PRIu64" bits %"PRIu64"..%"PRIu64
# target-s390x/ioinst.c
ioinst(const char *insn) "IOINST: %s"
ioinst_sch_id(const char *insn, int cssid, int ssid, int schid) "IOINST: %s (%x.%x.%04x)"
ioinst_chp_id(const char *insn, int cssid, int chpid) "IOINST: %s (%x.%02x)"
ioinst_chsc_cmd(uint16_t cmd, uint16_t len) "IOINST: chsc command %04x, len %04x"
# hw/s390x/css.c
css_enable_facility(const char *facility) "CSS: enable %s"
css_crw(uint8_t rsc, uint8_t erc, uint16_t rsid, const char *chained) "CSS: queueing crw: rsc=%x, erc=%x, rsid=%x %s"
css_chpid_add(uint8_t cssid, uint8_t chpid, uint8_t type) "CSS: add chpid %x.%02x (type %02x)"
css_new_image(uint8_t cssid, const char *default_cssid) "CSS: add css image %02x %s"
css_assign_subch(const char *do_assign, uint8_t cssid, uint8_t ssid, uint16_t schid, uint16_t devno) "CSS: %s %x.%x.%04x (devno %04x)"
css_io_interrupt(int cssid, int ssid, int schid, uint32_t intparm, uint8_t isc, const char *conditional) "CSS: I/O interrupt on sch %x.%x.%04x (intparm %08x, isc %x) %s"
# hw/s390x/virtio-ccw.c
virtio_ccw_interpret_ccw(int cssid, int ssid, int schid, int cmd_code) "VIRTIO-CCW: %x.%x.%04x: interpret command %x"
virtio_ccw_new_device(int cssid, int ssid, int schid, int devno, const char *devno_mode) "VIRTIO-CCW: add subchannel %x.%x.%04x, devno %04x (%s)"

52
vl.c
View File

@ -176,6 +176,7 @@ int main(int argc, char **argv)
#define DEFAULT_RAM_SIZE 128
#define MAX_VIRTIO_CONSOLES 1
#define MAX_SCLP_CONSOLES 1
static const char *data_dir;
const char *bios_name = NULL;
@ -203,6 +204,7 @@ int no_quit = 0;
CharDriverState *serial_hds[MAX_SERIAL_PORTS];
CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
CharDriverState *sclp_hds[MAX_SCLP_CONSOLES];
int win2k_install_hack = 0;
int singlestep = 0;
int smp_cpus = 1;
@ -271,6 +273,7 @@ static int tcg_tb_size;
static int default_serial = 1;
static int default_parallel = 1;
static int default_virtcon = 1;
static int default_sclp = 1;
static int default_monitor = 1;
static int default_floppy = 1;
static int default_cdrom = 1;
@ -2340,6 +2343,7 @@ struct device_config {
DEV_VIRTCON, /* -virtioconsole */
DEV_DEBUGCON, /* -debugcon */
DEV_GDB, /* -gdb, -s */
DEV_SCLP, /* s390 sclp */
} type;
const char *cmdline;
Location loc;
@ -2458,6 +2462,39 @@ static int virtcon_parse(const char *devname)
return 0;
}
static int sclp_parse(const char *devname)
{
QemuOptsList *device = qemu_find_opts("device");
static int index = 0;
char label[32];
QemuOpts *dev_opts;
if (strcmp(devname, "none") == 0) {
return 0;
}
if (index == MAX_SCLP_CONSOLES) {
fprintf(stderr, "qemu: too many sclp consoles\n");
exit(1);
}
assert(arch_type == QEMU_ARCH_S390X);
dev_opts = qemu_opts_create(device, NULL, 0, NULL);
qemu_opt_set(dev_opts, "driver", "sclpconsole");
snprintf(label, sizeof(label), "sclpcon%d", index);
sclp_hds[index] = qemu_chr_new(label, devname, NULL);
if (!sclp_hds[index]) {
fprintf(stderr, "qemu: could not connect sclp console"
" to character backend '%s'\n", devname);
return -1;
}
qemu_opt_set(dev_opts, "chardev", label);
index++;
return 0;
}
static int debugcon_parse(const char *devname)
{
QemuOpts *opts;
@ -3615,6 +3652,7 @@ int main(int argc, char **argv, char **envp)
default_serial = 0;
default_parallel = 0;
default_virtcon = 0;
default_sclp = 0;
default_monitor = 0;
default_net = 0;
default_floppy = 0;
@ -3832,6 +3870,9 @@ int main(int argc, char **argv, char **envp)
if (!machine->use_virtcon) {
default_virtcon = 0;
}
if (!machine->use_sclp) {
default_sclp = 0;
}
if (machine->no_floppy) {
default_floppy = 0;
}
@ -3873,11 +3914,16 @@ int main(int argc, char **argv, char **envp)
add_device_config(DEV_SERIAL, "mon:stdio");
} else if (default_virtcon && default_monitor) {
add_device_config(DEV_VIRTCON, "mon:stdio");
} else if (default_sclp && default_monitor) {
add_device_config(DEV_SCLP, "mon:stdio");
} else {
if (default_serial)
add_device_config(DEV_SERIAL, "stdio");
if (default_virtcon)
add_device_config(DEV_VIRTCON, "stdio");
if (default_sclp) {
add_device_config(DEV_SCLP, "stdio");
}
if (default_monitor)
monitor_parse("stdio", "readline");
}
@ -3890,6 +3936,9 @@ int main(int argc, char **argv, char **envp)
monitor_parse("vc:80Cx24C", "readline");
if (default_virtcon)
add_device_config(DEV_VIRTCON, "vc:80Cx24C");
if (default_sclp) {
add_device_config(DEV_SCLP, "vc:80Cx24C");
}
}
socket_init();
@ -4060,6 +4109,9 @@ int main(int argc, char **argv, char **envp)
exit(1);
if (foreach_device_config(DEV_VIRTCON, virtcon_parse) < 0)
exit(1);
if (foreach_device_config(DEV_SCLP, sclp_parse) < 0) {
exit(1);
}
if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0)
exit(1);