diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/s390x/css.c | 51 | ||||
| -rw-r--r-- | hw/s390x/s390-pci-inst.c | 29 | ||||
| -rw-r--r-- | hw/s390x/s390-virtio-ccw.c | 138 |
3 files changed, 153 insertions, 65 deletions
diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 7d9523f811..95d1b3a3ce 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -1522,21 +1522,37 @@ IOInstEnding css_do_xsch(SubchDev *sch) IOInstEnding css_do_csch(SubchDev *sch) { SCHIB *schib = &sch->curr_status; + uint16_t old_scsw_ctrl; + IOInstEnding ccode; if (~(schib->pmcw.flags) & (PMCW_FLAGS_MASK_DNV | PMCW_FLAGS_MASK_ENA)) { return IOINST_CC_NOT_OPERATIONAL; } + /* + * Save the current scsw.ctrl in case CSCH fails and we need + * to revert the scsw to the status quo ante. + */ + old_scsw_ctrl = schib->scsw.ctrl; + /* Trigger the clear function. */ schib->scsw.ctrl &= ~(SCSW_CTRL_MASK_FCTL | SCSW_CTRL_MASK_ACTL); schib->scsw.ctrl |= SCSW_FCTL_CLEAR_FUNC | SCSW_ACTL_CLEAR_PEND; - return do_subchannel_work(sch); + ccode = do_subchannel_work(sch); + + if (ccode != IOINST_CC_EXPECTED) { + schib->scsw.ctrl = old_scsw_ctrl; + } + + return ccode; } IOInstEnding css_do_hsch(SubchDev *sch) { SCHIB *schib = &sch->curr_status; + uint16_t old_scsw_ctrl; + IOInstEnding ccode; if (~(schib->pmcw.flags) & (PMCW_FLAGS_MASK_DNV | PMCW_FLAGS_MASK_ENA)) { return IOINST_CC_NOT_OPERATIONAL; @@ -1553,6 +1569,12 @@ IOInstEnding css_do_hsch(SubchDev *sch) return IOINST_CC_BUSY; } + /* + * Save the current scsw.ctrl in case HSCH fails and we need + * to revert the scsw to the status quo ante. + */ + old_scsw_ctrl = schib->scsw.ctrl; + /* Trigger the halt function. */ schib->scsw.ctrl |= SCSW_FCTL_HALT_FUNC; schib->scsw.ctrl &= ~SCSW_FCTL_START_FUNC; @@ -1564,7 +1586,13 @@ IOInstEnding css_do_hsch(SubchDev *sch) } schib->scsw.ctrl |= SCSW_ACTL_HALT_PEND; - return do_subchannel_work(sch); + ccode = do_subchannel_work(sch); + + if (ccode != IOINST_CC_EXPECTED) { + schib->scsw.ctrl = old_scsw_ctrl; + } + + return ccode; } static void css_update_chnmon(SubchDev *sch) @@ -1605,6 +1633,8 @@ static void css_update_chnmon(SubchDev *sch) IOInstEnding css_do_ssch(SubchDev *sch, ORB *orb) { SCHIB *schib = &sch->curr_status; + uint16_t old_scsw_ctrl, old_scsw_flags; + IOInstEnding ccode; if (~(schib->pmcw.flags) & (PMCW_FLAGS_MASK_DNV | PMCW_FLAGS_MASK_ENA)) { return IOINST_CC_NOT_OPERATIONAL; @@ -1626,11 +1656,26 @@ IOInstEnding css_do_ssch(SubchDev *sch, ORB *orb) } sch->orb = *orb; sch->channel_prog = orb->cpa; + + /* + * Save the current scsw.ctrl and scsw.flags in case SSCH fails and we need + * to revert the scsw to the status quo ante. + */ + old_scsw_ctrl = schib->scsw.ctrl; + old_scsw_flags = schib->scsw.flags; + /* Trigger the start function. */ schib->scsw.ctrl |= (SCSW_FCTL_START_FUNC | SCSW_ACTL_START_PEND); schib->scsw.flags &= ~SCSW_FLAGS_MASK_PNO; - return do_subchannel_work(sch); + ccode = do_subchannel_work(sch); + + if (ccode != IOINST_CC_EXPECTED) { + schib->scsw.ctrl = old_scsw_ctrl; + schib->scsw.flags = old_scsw_flags; + } + + return ccode; } static void copy_irb_to_guest(IRB *dest, const IRB *src, const PMCW *pmcw, diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index 20a9bcc7af..7cc4bcf850 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -677,8 +677,9 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra) S390PCIBusDevice *pbdev; S390PCIIOMMU *iommu; S390IOTLBEntry entry; - hwaddr start, end; + hwaddr start, end, sstart; uint32_t dma_avail; + bool again; if (env->psw.mask & PSW_MASK_PSTATE) { s390_program_interrupt(env, PGM_PRIVILEGED, ra); @@ -691,7 +692,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra) } fh = env->regs[r1] >> 32; - start = env->regs[r2]; + sstart = start = env->regs[r2]; end = start + env->regs[r2 + 1]; pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh); @@ -732,6 +733,9 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra) goto err; } + retry: + start = sstart; + again = false; while (start < end) { error = s390_guest_io_table_walk(iommu->g_iota, start, &entry); if (error) { @@ -739,13 +743,24 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra) } start += entry.len; - while (entry.iova < start && entry.iova < end && - (dma_avail > 0 || entry.perm == IOMMU_NONE)) { - dma_avail = s390_pci_update_iotlb(iommu, &entry); - entry.iova += TARGET_PAGE_SIZE; - entry.translated_addr += TARGET_PAGE_SIZE; + while (entry.iova < start && entry.iova < end) { + if (dma_avail > 0 || entry.perm == IOMMU_NONE) { + dma_avail = s390_pci_update_iotlb(iommu, &entry); + entry.iova += TARGET_PAGE_SIZE; + entry.translated_addr += TARGET_PAGE_SIZE; + } else { + /* + * We are unable to make a new mapping at this time, continue + * on and hopefully free up more space. Then attempt another + * pass. + */ + again = true; + break; + } } } + if (again && dma_avail > 0) + goto retry; err: if (error) { pbdev->state = ZPCI_FS_ERROR; diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 806de32034..560ddbb6fb 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -43,6 +43,7 @@ #include "sysemu/sysemu.h" #include "hw/s390x/pv.h" #include "migration/blocker.h" +#include "qapi/visitor.h" static Error *pv_mig_blocker; @@ -84,8 +85,15 @@ out: static void s390_init_cpus(MachineState *machine) { MachineClass *mc = MACHINE_GET_CLASS(machine); + S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc); int i; + if (machine->smp.threads > s390mc->max_threads) { + error_report("S390 does not support more than %d threads.", + s390mc->max_threads); + exit(1); + } + /* initialize possible_cpus */ mc->possible_cpu_arch_ids(machine); @@ -589,38 +597,6 @@ static ram_addr_t s390_fixup_ram_size(ram_addr_t sz) return newsz; } -static void ccw_machine_class_init(ObjectClass *oc, void *data) -{ - MachineClass *mc = MACHINE_CLASS(oc); - NMIClass *nc = NMI_CLASS(oc); - HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); - S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc); - - s390mc->ri_allowed = true; - s390mc->cpu_model_allowed = true; - s390mc->css_migration_enabled = true; - s390mc->hpage_1m_allowed = true; - mc->init = ccw_init; - mc->reset = s390_machine_reset; - mc->block_default_type = IF_VIRTIO; - mc->no_cdrom = 1; - mc->no_floppy = 1; - mc->no_parallel = 1; - mc->no_sdcard = 1; - mc->max_cpus = S390_MAX_CPUS; - mc->has_hotpluggable_cpus = true; - assert(!mc->get_hotplug_handler); - mc->get_hotplug_handler = s390_get_hotplug_handler; - mc->cpu_index_to_instance_props = s390_cpu_index_to_props; - mc->possible_cpu_arch_ids = s390_possible_cpu_arch_ids; - /* it is overridden with 'host' cpu *in kvm_arch_init* */ - mc->default_cpu_type = S390_CPU_TYPE_NAME("qemu"); - hc->plug = s390_machine_device_plug; - hc->unplug_request = s390_machine_device_unplug_request; - nc->nmi_monitor_handler = s390_nmi; - mc->default_ram_id = "s390.ram"; -} - static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp) { S390CcwMachineState *ms = S390_CCW_MACHINE(obj); @@ -710,19 +686,29 @@ bool hpage_1m_allowed(void) return get_machine_class()->hpage_1m_allowed; } -static char *machine_get_loadparm(Object *obj, Error **errp) +static void machine_get_loadparm(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) { S390CcwMachineState *ms = S390_CCW_MACHINE(obj); + char *str = g_strndup((char *) ms->loadparm, sizeof(ms->loadparm)); - /* make a NUL-terminated string */ - return g_strndup((char *) ms->loadparm, sizeof(ms->loadparm)); + visit_type_str(v, name, &str, errp); + g_free(str); } -static void machine_set_loadparm(Object *obj, const char *val, Error **errp) +static void machine_set_loadparm(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) { S390CcwMachineState *ms = S390_CCW_MACHINE(obj); + char *val; int i; + if (!visit_type_str(v, name, &val, errp)) { + return; + } + for (i = 0; i < sizeof(ms->loadparm) && val[i]; i++) { uint8_t c = qemu_toupper(val[i]); /* mimic HMC */ @@ -740,34 +726,73 @@ static void machine_set_loadparm(Object *obj, const char *val, Error **errp) ms->loadparm[i] = ' '; /* pad right with spaces */ } } -static inline void s390_machine_initfn(Object *obj) + +static void ccw_machine_class_init(ObjectClass *oc, void *data) { - object_property_add_bool(obj, "aes-key-wrap", - machine_get_aes_key_wrap, - machine_set_aes_key_wrap); - object_property_set_description(obj, "aes-key-wrap", + MachineClass *mc = MACHINE_CLASS(oc); + NMIClass *nc = NMI_CLASS(oc); + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); + S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc); + + s390mc->ri_allowed = true; + s390mc->cpu_model_allowed = true; + s390mc->css_migration_enabled = true; + s390mc->hpage_1m_allowed = true; + s390mc->max_threads = 1; + mc->init = ccw_init; + mc->reset = s390_machine_reset; + mc->block_default_type = IF_VIRTIO; + mc->no_cdrom = 1; + mc->no_floppy = 1; + mc->no_parallel = 1; + mc->no_sdcard = 1; + mc->max_cpus = S390_MAX_CPUS; + mc->has_hotpluggable_cpus = true; + assert(!mc->get_hotplug_handler); + mc->get_hotplug_handler = s390_get_hotplug_handler; + mc->cpu_index_to_instance_props = s390_cpu_index_to_props; + mc->possible_cpu_arch_ids = s390_possible_cpu_arch_ids; + /* it is overridden with 'host' cpu *in kvm_arch_init* */ + mc->default_cpu_type = S390_CPU_TYPE_NAME("qemu"); + hc->plug = s390_machine_device_plug; + hc->unplug_request = s390_machine_device_unplug_request; + nc->nmi_monitor_handler = s390_nmi; + mc->default_ram_id = "s390.ram"; + + object_class_property_add_bool(oc, "aes-key-wrap", + machine_get_aes_key_wrap, + machine_set_aes_key_wrap); + object_class_property_set_description(oc, "aes-key-wrap", "enable/disable AES key wrapping using the CPACF wrapping key"); - object_property_set_bool(obj, "aes-key-wrap", true, NULL); - object_property_add_bool(obj, "dea-key-wrap", - machine_get_dea_key_wrap, - machine_set_dea_key_wrap); - object_property_set_description(obj, "dea-key-wrap", + object_class_property_add_bool(oc, "dea-key-wrap", + machine_get_dea_key_wrap, + machine_set_dea_key_wrap); + object_class_property_set_description(oc, "dea-key-wrap", "enable/disable DEA key wrapping using the CPACF wrapping key"); - object_property_set_bool(obj, "dea-key-wrap", true, NULL); - object_property_add_str(obj, "loadparm", - machine_get_loadparm, machine_set_loadparm); - object_property_set_description(obj, "loadparm", + + object_class_property_add(oc, "loadparm", "loadparm", + machine_get_loadparm, machine_set_loadparm, + NULL, NULL); + object_class_property_set_description(oc, "loadparm", "Up to 8 chars in set of [A-Za-z0-9. ] (lower case chars converted" " to upper case) to pass to machine loader, boot manager," " and guest kernel"); - object_property_add_bool(obj, "zpcii-disable", - machine_get_zpcii_disable, - machine_set_zpcii_disable); - object_property_set_description(obj, "zpcii-disable", + object_class_property_add_bool(oc, "zpcii-disable", + machine_get_zpcii_disable, + machine_set_zpcii_disable); + object_class_property_set_description(oc, "zpcii-disable", "disable zPCI interpretation facilties"); - object_property_set_bool(obj, "zpcii-disable", false, NULL); +} + +static inline void s390_machine_initfn(Object *obj) +{ + S390CcwMachineState *ms = S390_CCW_MACHINE(obj); + + ms->aes_key_wrap = true; + ms->dea_key_wrap = true; + ms->zpcii_disable = false; } static const TypeInfo ccw_machine_info = { @@ -842,8 +867,11 @@ static void ccw_machine_7_1_instance_options(MachineState *machine) static void ccw_machine_7_1_class_options(MachineClass *mc) { + S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc); + ccw_machine_7_2_class_options(mc); compat_props_add(mc->compat_props, hw_compat_7_1, hw_compat_7_1_len); + s390mc->max_threads = S390_MAX_CPUS; } DEFINE_CCW_MACHINE(7_1, "7.1", false); |