Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20180504' into staging

First s390x pull request for 2.13.
- new machine type
- extend SCLP event masks
- support configuration of consoles via -serial
- firmware improvements: non-sequential entries in boot menu, support
  for indirect loading via .INS files in s390-netboot
- bugfixes and cleanups

# gpg: Signature made Fri 04 May 2018 08:19:57 BST
# gpg:                using RSA key DECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>"
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>"
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20180504:
  pc-bios/s390: Update firmware images
  s390-ccw: force diag 308 subcode to unsigned long
  pc-bios/s390-ccw/net: Add support for .INS config files
  pc-bios/s390-ccw/net: Use diag308 to reset machine before jumping to the OS
  pc-bios/s390-ccw/net: Split up net_load() into init, load and release parts
  pc-bios/s390-ccw: fix non-sequential boot entries (enum)
  pc-bios/s390-ccw: fix non-sequential boot entries (eckd)
  pc-bios/s390-ccw: fix loadparm initialization and int conversion
  pc-bios/s390-ccw: rename MAX_TABLE_ENTRIES to MAX_BOOT_ENTRIES
  pc-bios/s390-ccw: size_t should be unsigned
  hw/s390x: Allow to configure the consoles with the "-serial" parameter
  s390x/kvm: cleanup calls to cpu_synchronize_state()
  vfio-ccw: introduce vfio_ccw_get_device()
  s390x/sclp: extend SCLP event masks to 64 bits
  s390x: introduce 2.13 compat machine

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5 files changed, 128 insertions, 40 deletions

diff --git a/hw/s390x/event-facility.c b/hw/s390x/event-facility.c
index 9c24bc6f7c..ee5b83448b 100644
--- a/hw/s390x/event-facility.c
+++ b/hw/s390x/event-facility.c
@@ -26,11 +26,23 @@ typedef struct SCLPEventsBus {
     BusState qbus;
 } SCLPEventsBus;
 
+/* we need to save 32 bit chunks for compatibility */
+#ifdef HOST_WORDS_BIGENDIAN
+#define RECV_MASK_LOWER 1
+#define RECV_MASK_UPPER 0
+#else /* little endian host */
+#define RECV_MASK_LOWER 0
+#define RECV_MASK_UPPER 1
+#endif
+
 struct SCLPEventFacility {
     SysBusDevice parent_obj;
     SCLPEventsBus sbus;
     /* guest's receive mask */
-    sccb_mask_t receive_mask;
+    union {
+        uint32_t receive_mask_pieces[2];
+        sccb_mask_t receive_mask;
+    };
     /*
      * when false, we keep the same broken, backwards compatible behaviour as
      * before, allowing only masks of size exactly 4; when true, we implement
@@ -262,7 +274,7 @@ static void read_event_data(SCLPEventFacility *ef, SCCB *sccb)
     case SCLP_SELECTIVE_READ:
         copy_mask((uint8_t *)&sclp_active_selection_mask, (uint8_t *)&red->mask,
                   sizeof(sclp_active_selection_mask), ef->mask_length);
-        sclp_active_selection_mask = be32_to_cpu(sclp_active_selection_mask);
+        sclp_active_selection_mask = be64_to_cpu(sclp_active_selection_mask);
         if (!sclp_cp_receive_mask ||
             (sclp_active_selection_mask & ~sclp_cp_receive_mask)) {
             sccb->h.response_code =
@@ -294,21 +306,22 @@ static void write_event_mask(SCLPEventFacility *ef, SCCB *sccb)
     }
 
     /*
-     * Note: We currently only support masks up to 4 byte length;
-     *       the remainder is filled up with zeroes. Linux uses
-     *       a 4 byte mask length.
+     * Note: We currently only support masks up to 8 byte length;
+     *       the remainder is filled up with zeroes. Older Linux
+     *       kernels use a 4 byte mask length, newer ones can use both
+     *       8 or 4 depending on what is available on the host.
      */
 
     /* keep track of the guest's capability masks */
     copy_mask((uint8_t *)&tmp_mask, WEM_CP_RECEIVE_MASK(we_mask, mask_length),
               sizeof(tmp_mask), mask_length);
-    ef->receive_mask = be32_to_cpu(tmp_mask);
+    ef->receive_mask = be64_to_cpu(tmp_mask);
 
     /* return the SCLP's capability masks to the guest */
-    tmp_mask = cpu_to_be32(get_host_receive_mask(ef));
+    tmp_mask = cpu_to_be64(get_host_receive_mask(ef));
     copy_mask(WEM_RECEIVE_MASK(we_mask, mask_length), (uint8_t *)&tmp_mask,
               mask_length, sizeof(tmp_mask));
-    tmp_mask = cpu_to_be32(get_host_send_mask(ef));
+    tmp_mask = cpu_to_be64(get_host_send_mask(ef));
     copy_mask(WEM_SEND_MASK(we_mask, mask_length), (uint8_t *)&tmp_mask,
               mask_length, sizeof(tmp_mask));
 
@@ -369,6 +382,13 @@ static void command_handler(SCLPEventFacility *ef, SCCB *sccb, uint64_t code)
     }
 }
 
+static bool vmstate_event_facility_mask64_needed(void *opaque)
+{
+    SCLPEventFacility *ef = opaque;
+
+    return (ef->receive_mask & 0xFFFFFFFF) != 0;
+}
+
 static bool vmstate_event_facility_mask_length_needed(void *opaque)
 {
     SCLPEventFacility *ef = opaque;
@@ -376,6 +396,17 @@ static bool vmstate_event_facility_mask_length_needed(void *opaque)
     return ef->allow_all_mask_sizes;
 }
 
+static const VMStateDescription vmstate_event_facility_mask64 = {
+    .name = "vmstate-event-facility/mask64",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .needed = vmstate_event_facility_mask64_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32(receive_mask_pieces[RECV_MASK_LOWER], SCLPEventFacility),
+        VMSTATE_END_OF_LIST()
+     }
+};
+
 static const VMStateDescription vmstate_event_facility_mask_length = {
     .name = "vmstate-event-facility/mask_length",
     .version_id = 0,
@@ -392,10 +423,11 @@ static const VMStateDescription vmstate_event_facility = {
     .version_id = 0,
     .minimum_version_id = 0,
     .fields = (VMStateField[]) {
-        VMSTATE_UINT32(receive_mask, SCLPEventFacility),
+        VMSTATE_UINT32(receive_mask_pieces[RECV_MASK_UPPER], SCLPEventFacility),
         VMSTATE_END_OF_LIST()
      },
     .subsections = (const VMStateDescription * []) {
+        &vmstate_event_facility_mask64,
         &vmstate_event_facility_mask_length,
         NULL
      }
@@ -511,3 +543,17 @@ static void register_types(void)
 }
 
 type_init(register_types)
+
+BusState *sclp_get_event_facility_bus(void)
+{
+    Object *busobj;
+    SCLPEventsBus *sbus;
+
+    busobj = object_resolve_path_type("", TYPE_SCLP_EVENTS_BUS, NULL);
+    sbus = OBJECT_CHECK(SCLPEventsBus, busobj, TYPE_SCLP_EVENTS_BUS);
+    if (!sbus) {
+        return NULL;
+    }
+
+    return &sbus->qbus;
+}
diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index fb554ab156..150f6c0582 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -373,6 +373,10 @@ int s390_ipl_set_loadparm(uint8_t *loadparm)
             loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]];
         }
 
+        if (i < 8) {
+            memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */
+        }
+
         g_free(lp);
         return 0;
     }
diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c
index 3fcc330fe3..02a815fd31 100644
--- a/hw/s390x/s390-pci-inst.c
+++ b/hw/s390x/s390-pci-inst.c
@@ -155,8 +155,6 @@ int clp_service_call(S390CPU *cpu, uint8_t r2, uintptr_t ra)
     S390pciState *s = s390_get_phb();
     int i;
 
-    cpu_synchronize_state(CPU(cpu));
-
     if (env->psw.mask & PSW_MASK_PSTATE) {
         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
         return 0;
@@ -389,8 +387,6 @@ int pcilg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
     uint32_t fh;
     uint8_t pcias;
 
-    cpu_synchronize_state(CPU(cpu));
-
     if (env->psw.mask & PSW_MASK_PSTATE) {
         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
         return 0;
@@ -487,8 +483,6 @@ int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
     uint32_t fh;
     uint8_t pcias;
 
-    cpu_synchronize_state(CPU(cpu));
-
     if (env->psw.mask & PSW_MASK_PSTATE) {
         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
         return 0;
@@ -620,8 +614,6 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
     S390IOTLBEntry entry;
     hwaddr start, end;
 
-    cpu_synchronize_state(CPU(cpu));
-
     if (env->psw.mask & PSW_MASK_PSTATE) {
         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
         return 0;
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 435f7c99e7..100dfdc96d 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -288,6 +288,15 @@ static void s390_create_virtio_net(BusState *bus, const char *name)
     }
 }
 
+static void s390_create_sclpconsole(const char *type, Chardev *chardev)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(sclp_get_event_facility_bus(), type);
+    qdev_prop_set_chr(dev, "chardev", chardev);
+    qdev_init_nofail(dev);
+}
+
 static void ccw_init(MachineState *machine)
 {
     int ret;
@@ -346,6 +355,14 @@ static void ccw_init(MachineState *machine)
     /* Create VirtIO network adapters */
     s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw");
 
+    /* init consoles */
+    if (serial_hd(0)) {
+        s390_create_sclpconsole("sclpconsole", serial_hd(0));
+    }
+    if (serial_hd(1)) {
+        s390_create_sclpconsole("sclplmconsole", serial_hd(1));
+    }
+
     /* Register savevm handler for guest TOD clock */
     register_savevm_live(NULL, "todclock", 0, 1, &savevm_gtod, NULL);
 }
@@ -470,10 +487,8 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
     mc->block_default_type = IF_VIRTIO;
     mc->no_cdrom = 1;
     mc->no_floppy = 1;
-    mc->no_serial = 1;
     mc->no_parallel = 1;
     mc->no_sdcard = 1;
-    mc->use_sclp = 1;
     mc->max_cpus = S390_MAX_CPUS;
     mc->has_hotpluggable_cpus = true;
     mc->get_hotplug_handler = s390_get_hotplug_handler;
@@ -671,6 +686,9 @@ bool css_migration_enabled(void)
     }                                                                         \
     type_init(ccw_machine_register_##suffix)
 
+#define CCW_COMPAT_2_12 \
+        HW_COMPAT_2_12
+
 #define CCW_COMPAT_2_11 \
         HW_COMPAT_2_11 \
         {\
@@ -756,14 +774,26 @@ bool css_migration_enabled(void)
             .value    = "0",\
         },
 
+static void ccw_machine_2_13_instance_options(MachineState *machine)
+{
+}
+
+static void ccw_machine_2_13_class_options(MachineClass *mc)
+{
+}
+DEFINE_CCW_MACHINE(2_13, "2.13", true);
+
 static void ccw_machine_2_12_instance_options(MachineState *machine)
 {
+    ccw_machine_2_13_instance_options(machine);
 }
 
 static void ccw_machine_2_12_class_options(MachineClass *mc)
 {
+    ccw_machine_2_13_class_options(mc);
+    SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_12);
 }
-DEFINE_CCW_MACHINE(2_12, "2.12", true);
+DEFINE_CCW_MACHINE(2_12, "2.12", false);
 
 static void ccw_machine_2_11_instance_options(MachineState *machine)
 {
diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index fe34b50769..e67392c5f9 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -292,12 +292,43 @@ static void vfio_ccw_put_region(VFIOCCWDevice *vcdev)
     g_free(vcdev->io_region);
 }
 
-static void vfio_put_device(VFIOCCWDevice *vcdev)
+static void vfio_ccw_put_device(VFIOCCWDevice *vcdev)
 {
     g_free(vcdev->vdev.name);
     vfio_put_base_device(&vcdev->vdev);
 }
 
+static void vfio_ccw_get_device(VFIOGroup *group, VFIOCCWDevice *vcdev,
+                                Error **errp)
+{
+    char *name = g_strdup_printf("%x.%x.%04x", vcdev->cdev.hostid.cssid,
+                                 vcdev->cdev.hostid.ssid,
+                                 vcdev->cdev.hostid.devid);
+    VFIODevice *vbasedev;
+
+    QLIST_FOREACH(vbasedev, &group->device_list, next) {
+        if (strcmp(vbasedev->name, name) == 0) {
+            error_setg(errp, "vfio: subchannel %s has already been attached",
+                       name);
+            goto out_err;
+        }
+    }
+
+    if (vfio_get_device(group, vcdev->cdev.mdevid, &vcdev->vdev, errp)) {
+        goto out_err;
+    }
+
+    vcdev->vdev.ops = &vfio_ccw_ops;
+    vcdev->vdev.type = VFIO_DEVICE_TYPE_CCW;
+    vcdev->vdev.name = name;
+    vcdev->vdev.dev = &vcdev->cdev.parent_obj.parent_obj;
+
+    return;
+
+out_err:
+    g_free(name);
+}
+
 static VFIOGroup *vfio_ccw_get_group(S390CCWDevice *cdev, Error **errp)
 {
     char *tmp, group_path[PATH_MAX];
@@ -327,7 +358,6 @@ static VFIOGroup *vfio_ccw_get_group(S390CCWDevice *cdev, Error **errp)
 
 static void vfio_ccw_realize(DeviceState *dev, Error **errp)
 {
-    VFIODevice *vbasedev;
     VFIOGroup *group;
     CcwDevice *ccw_dev = DO_UPCAST(CcwDevice, parent_obj, dev);
     S390CCWDevice *cdev = DO_UPCAST(S390CCWDevice, parent_obj, ccw_dev);
@@ -348,22 +378,8 @@ static void vfio_ccw_realize(DeviceState *dev, Error **errp)
         goto out_group_err;
     }
 
-    vcdev->vdev.ops = &vfio_ccw_ops;
-    vcdev->vdev.type = VFIO_DEVICE_TYPE_CCW;
-    vcdev->vdev.name = g_strdup_printf("%x.%x.%04x", cdev->hostid.cssid,
-                                       cdev->hostid.ssid, cdev->hostid.devid);
-    vcdev->vdev.dev = dev;
-    QLIST_FOREACH(vbasedev, &group->device_list, next) {
-        if (strcmp(vbasedev->name, vcdev->vdev.name) == 0) {
-            error_setg(&err, "vfio: subchannel %s has already been attached",
-                       vcdev->vdev.name);
-            g_free(vcdev->vdev.name);
-            goto out_device_err;
-        }
-    }
-
-    if (vfio_get_device(group, cdev->mdevid, &vcdev->vdev, &err)) {
-        g_free(vcdev->vdev.name);
+    vfio_ccw_get_device(group, vcdev, &err);
+    if (err) {
         goto out_device_err;
     }
 
@@ -382,7 +398,7 @@ static void vfio_ccw_realize(DeviceState *dev, Error **errp)
 out_notifier_err:
     vfio_ccw_put_region(vcdev);
 out_region_err:
-    vfio_put_device(vcdev);
+    vfio_ccw_put_device(vcdev);
 out_device_err:
     vfio_put_group(group);
 out_group_err:
@@ -403,7 +419,7 @@ static void vfio_ccw_unrealize(DeviceState *dev, Error **errp)
 
     vfio_ccw_unregister_io_notifier(vcdev);
     vfio_ccw_put_region(vcdev);
-    vfio_put_device(vcdev);
+    vfio_ccw_put_device(vcdev);
     vfio_put_group(group);
 
     if (cdc->unrealize) {