diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/intc/s390_flic_kvm.c | 4 | ||||
| -rw-r--r-- | hw/s390x/s390-pci-bus.c | 361 | ||||
| -rw-r--r-- | hw/s390x/s390-pci-bus.h | 46 | ||||
| -rw-r--r-- | hw/s390x/s390-pci-inst.c | 74 | ||||
| -rw-r--r-- | hw/s390x/s390-pci-inst.h | 2 | ||||
| -rw-r--r-- | hw/s390x/s390-virtio-ccw.c | 19 | ||||
| -rw-r--r-- | hw/s390x/virtio-ccw.c | 2 | ||||
| -rw-r--r-- | hw/virtio/virtio.c | 5 |
8 files changed, 332 insertions, 181 deletions
diff --git a/hw/intc/s390_flic_kvm.c b/hw/intc/s390_flic_kvm.c index 21ac2e2..c313166 100644 --- a/hw/intc/s390_flic_kvm.c +++ b/hw/intc/s390_flic_kvm.c @@ -201,7 +201,7 @@ static int kvm_s390_register_io_adapter(S390FLICState *fs, uint32_t id, .addr = (uint64_t)&adapter, }; - if (!kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING)) { + if (!kvm_gsi_routing_enabled()) { /* nothing to do */ return 0; } @@ -226,7 +226,7 @@ static int kvm_s390_io_adapter_map(S390FLICState *fs, uint32_t id, KVMS390FLICState *flic = KVM_S390_FLIC(fs); int r; - if (!kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING)) { + if (!kvm_gsi_routing_enabled()) { /* nothing to do */ return 0; } diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c index 63f6248..69b0291 100644 --- a/hw/s390x/s390-pci-bus.c +++ b/hw/s390x/s390-pci-bus.c @@ -19,6 +19,7 @@ #include "s390-pci-bus.h" #include "s390-pci-inst.h" #include "hw/pci/pci_bus.h" +#include "hw/pci/pci_bridge.h" #include "hw/pci/msi.h" #include "qemu/error-report.h" @@ -31,7 +32,7 @@ do { } while (0) #endif -static S390pciState *s390_get_phb(void) +S390pciState *s390_get_phb(void) { static S390pciState *phb; @@ -91,35 +92,25 @@ int chsc_sei_nt2_have_event(void) return !QTAILQ_EMPTY(&s->pending_sei); } -S390PCIBusDevice *s390_pci_find_next_avail_dev(S390PCIBusDevice *pbdev) +S390PCIBusDevice *s390_pci_find_next_avail_dev(S390pciState *s, + S390PCIBusDevice *pbdev) { - int idx = 0; - S390PCIBusDevice *dev = NULL; - S390pciState *s = s390_get_phb(); - - if (pbdev) { - idx = (pbdev->fh & FH_MASK_INDEX) + 1; - } + S390PCIBusDevice *ret = pbdev ? QTAILQ_NEXT(pbdev, link) : + QTAILQ_FIRST(&s->zpci_devs); - for (; idx < PCI_SLOT_MAX; idx++) { - dev = s->pbdev[idx]; - if (dev && dev->state != ZPCI_FS_RESERVED) { - return dev; - } + while (ret && ret->state == ZPCI_FS_RESERVED) { + ret = QTAILQ_NEXT(ret, link); } - return NULL; + return ret; } -S390PCIBusDevice *s390_pci_find_dev_by_fid(uint32_t fid) +S390PCIBusDevice *s390_pci_find_dev_by_fid(S390pciState *s, uint32_t fid) { S390PCIBusDevice *pbdev; - int i; - S390pciState *s = s390_get_phb(); - for (i = 0; i < PCI_SLOT_MAX; i++) { - pbdev = s->pbdev[i]; - if (pbdev && pbdev->fid == fid) { + QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { + if (pbdev->fid == fid) { return pbdev; } } @@ -130,7 +121,8 @@ S390PCIBusDevice *s390_pci_find_dev_by_fid(uint32_t fid) void s390_pci_sclp_configure(SCCB *sccb) { PciCfgSccb *psccb = (PciCfgSccb *)sccb; - S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(be32_to_cpu(psccb->aid)); + S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(), + be32_to_cpu(psccb->aid)); uint16_t rc; if (be16_to_cpu(sccb->h.length) < 16) { @@ -162,7 +154,8 @@ out: void s390_pci_sclp_deconfigure(SCCB *sccb) { PciCfgSccb *psccb = (PciCfgSccb *)sccb; - S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(be32_to_cpu(psccb->aid)); + S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(), + be32_to_cpu(psccb->aid)); uint16_t rc; if (be16_to_cpu(sccb->h.length) < 16) { @@ -187,8 +180,8 @@ void s390_pci_sclp_deconfigure(SCCB *sccb) if (pbdev->summary_ind) { pci_dereg_irqs(pbdev); } - if (pbdev->iommu_enabled) { - pci_dereg_ioat(pbdev); + if (pbdev->iommu->enabled) { + pci_dereg_ioat(pbdev->iommu); } pbdev->state = ZPCI_FS_STANDBY; rc = SCLP_RC_NORMAL_COMPLETION; @@ -201,18 +194,11 @@ out: psccb->header.response_code = cpu_to_be16(rc); } -static S390PCIBusDevice *s390_pci_find_dev_by_uid(uint16_t uid) +static S390PCIBusDevice *s390_pci_find_dev_by_uid(S390pciState *s, uint16_t uid) { - int i; S390PCIBusDevice *pbdev; - S390pciState *s = s390_get_phb(); - - for (i = 0; i < PCI_SLOT_MAX; i++) { - pbdev = s->pbdev[i]; - if (!pbdev) { - continue; - } + QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { if (pbdev->uid == uid) { return pbdev; } @@ -221,22 +207,16 @@ static S390PCIBusDevice *s390_pci_find_dev_by_uid(uint16_t uid) return NULL; } -static S390PCIBusDevice *s390_pci_find_dev_by_target(const char *target) +static S390PCIBusDevice *s390_pci_find_dev_by_target(S390pciState *s, + const char *target) { - int i; S390PCIBusDevice *pbdev; - S390pciState *s = s390_get_phb(); if (!target) { return NULL; } - for (i = 0; i < PCI_SLOT_MAX; i++) { - pbdev = s->pbdev[i]; - if (!pbdev) { - continue; - } - + QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { if (!strcmp(pbdev->target, target)) { return pbdev; } @@ -245,19 +225,16 @@ static S390PCIBusDevice *s390_pci_find_dev_by_target(const char *target) return NULL; } -S390PCIBusDevice *s390_pci_find_dev_by_idx(uint32_t idx) +S390PCIBusDevice *s390_pci_find_dev_by_idx(S390pciState *s, uint32_t idx) { - S390pciState *s = s390_get_phb(); - - return s->pbdev[idx & FH_MASK_INDEX]; + return g_hash_table_lookup(s->zpci_table, &idx); } -S390PCIBusDevice *s390_pci_find_dev_by_fh(uint32_t fh) +S390PCIBusDevice *s390_pci_find_dev_by_fh(S390pciState *s, uint32_t fh) { - S390pciState *s = s390_get_phb(); - S390PCIBusDevice *pbdev; + uint32_t idx = FH_MASK_INDEX & fh; + S390PCIBusDevice *pbdev = s390_pci_find_dev_by_idx(s, idx); - pbdev = s->pbdev[fh & FH_MASK_INDEX]; if (pbdev && pbdev->fh == fh) { return pbdev; } @@ -377,12 +354,12 @@ out: return pte; } -static IOMMUTLBEntry s390_translate_iommu(MemoryRegion *iommu, hwaddr addr, +static IOMMUTLBEntry s390_translate_iommu(MemoryRegion *mr, hwaddr addr, bool is_write) { uint64_t pte; uint32_t flags; - S390PCIBusDevice *pbdev = container_of(iommu, S390PCIBusDevice, iommu_mr); + S390PCIIOMMU *iommu = container_of(mr, S390PCIIOMMU, iommu_mr); IOMMUTLBEntry ret = { .target_as = &address_space_memory, .iova = 0, @@ -391,10 +368,10 @@ static IOMMUTLBEntry s390_translate_iommu(MemoryRegion *iommu, hwaddr addr, .perm = IOMMU_NONE, }; - switch (pbdev->state) { + switch (iommu->pbdev->state) { case ZPCI_FS_ENABLED: case ZPCI_FS_BLOCKED: - if (!pbdev->iommu_enabled) { + if (!iommu->enabled) { return ret; } break; @@ -404,11 +381,11 @@ static IOMMUTLBEntry s390_translate_iommu(MemoryRegion *iommu, hwaddr addr, DPRINTF("iommu trans addr 0x%" PRIx64 "\n", addr); - if (addr < pbdev->pba || addr > pbdev->pal) { + if (addr < iommu->pba || addr > iommu->pal) { return ret; } - pte = s390_guest_io_table_walk(s390_pci_get_table_origin(pbdev->g_iota), + pte = s390_guest_io_table_walk(s390_pci_get_table_origin(iommu->g_iota), addr); if (!pte) { return ret; @@ -432,11 +409,48 @@ static const MemoryRegionIOMMUOps s390_iommu_ops = { .translate = s390_translate_iommu, }; +static S390PCIIOMMU *s390_pci_get_iommu(S390pciState *s, PCIBus *bus, + int devfn) +{ + uint64_t key = (uintptr_t)bus; + S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key); + S390PCIIOMMU *iommu; + + if (!table) { + table = g_malloc0(sizeof(S390PCIIOMMUTable)); + table->key = key; + g_hash_table_insert(s->iommu_table, &table->key, table); + } + + iommu = table->iommu[PCI_SLOT(devfn)]; + if (!iommu) { + iommu = S390_PCI_IOMMU(object_new(TYPE_S390_PCI_IOMMU)); + + char *mr_name = g_strdup_printf("iommu-root-%02x:%02x.%01x", + pci_bus_num(bus), + PCI_SLOT(devfn), + PCI_FUNC(devfn)); + char *as_name = g_strdup_printf("iommu-pci-%02x:%02x.%01x", + pci_bus_num(bus), + PCI_SLOT(devfn), + PCI_FUNC(devfn)); + memory_region_init(&iommu->mr, OBJECT(iommu), mr_name, UINT64_MAX); + address_space_init(&iommu->as, &iommu->mr, as_name); + table->iommu[PCI_SLOT(devfn)] = iommu; + + g_free(mr_name); + g_free(as_name); + } + + return iommu; +} + static AddressSpace *s390_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn) { S390pciState *s = opaque; + S390PCIIOMMU *iommu = s390_pci_get_iommu(s, bus, devfn); - return &s->iommu[PCI_SLOT(devfn)]->as; + return &iommu->as; } static uint8_t set_ind_atomic(uint64_t ind_loc, uint8_t to_be_set) @@ -503,34 +517,38 @@ static const MemoryRegionOps s390_msi_ctrl_ops = { .endianness = DEVICE_LITTLE_ENDIAN, }; -void s390_pci_iommu_enable(S390PCIBusDevice *pbdev) +void s390_pci_iommu_enable(S390PCIIOMMU *iommu) { - memory_region_init_iommu(&pbdev->iommu_mr, OBJECT(&pbdev->iommu->mr), - &s390_iommu_ops, "iommu-s390", pbdev->pal + 1); - memory_region_add_subregion(&pbdev->iommu->mr, 0, &pbdev->iommu_mr); - pbdev->iommu_enabled = true; + char *name = g_strdup_printf("iommu-s390-%04x", iommu->pbdev->uid); + memory_region_init_iommu(&iommu->iommu_mr, OBJECT(&iommu->mr), + &s390_iommu_ops, name, iommu->pal + 1); + iommu->enabled = true; + memory_region_add_subregion(&iommu->mr, 0, &iommu->iommu_mr); + g_free(name); } -void s390_pci_iommu_disable(S390PCIBusDevice *pbdev) +void s390_pci_iommu_disable(S390PCIIOMMU *iommu) { - memory_region_del_subregion(&pbdev->iommu->mr, &pbdev->iommu_mr); - object_unparent(OBJECT(&pbdev->iommu_mr)); - pbdev->iommu_enabled = false; + iommu->enabled = false; + memory_region_del_subregion(&iommu->mr, &iommu->iommu_mr); + object_unparent(OBJECT(&iommu->iommu_mr)); } -static void s390_pcihost_init_as(S390pciState *s) +static void s390_pci_iommu_free(S390pciState *s, PCIBus *bus, int32_t devfn) { - int i; - S390PCIIOMMU *iommu; + uint64_t key = (uintptr_t)bus; + S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key); + S390PCIIOMMU *iommu = table ? table->iommu[PCI_SLOT(devfn)] : NULL; - for (i = 0; i < PCI_SLOT_MAX; i++) { - iommu = g_malloc0(sizeof(S390PCIIOMMU)); - memory_region_init(&iommu->mr, OBJECT(s), - "iommu-root-s390", UINT64_MAX); - address_space_init(&iommu->as, &iommu->mr, "iommu-pci"); - - s->iommu[i] = iommu; + if (!table || !iommu) { + return; } + + table->iommu[PCI_SLOT(devfn)] = NULL; + address_space_destroy(&iommu->as); + object_unparent(OBJECT(&iommu->mr)); + object_unparent(OBJECT(iommu)); + object_unref(OBJECT(iommu)); } static int s390_pcihost_init(SysBusDevice *dev) @@ -546,7 +564,6 @@ static int s390_pcihost_init(SysBusDevice *dev) s390_pci_set_irq, s390_pci_map_irq, NULL, get_system_memory(), get_system_io(), 0, 64, TYPE_PCI_BUS); - s390_pcihost_init_as(s); pci_setup_iommu(b, s390_pci_dma_iommu, s); bus = BUS(b); @@ -556,12 +573,18 @@ static int s390_pcihost_init(SysBusDevice *dev) s->bus = S390_PCI_BUS(qbus_create(TYPE_S390_PCI_BUS, DEVICE(s), NULL)); qbus_set_hotplug_handler(BUS(s->bus), DEVICE(s), NULL); + s->iommu_table = g_hash_table_new_full(g_int64_hash, g_int64_equal, + NULL, g_free); + s->zpci_table = g_hash_table_new_full(g_int_hash, g_int_equal, NULL, NULL); + s->bus_no = 0; QTAILQ_INIT(&s->pending_sei); + QTAILQ_INIT(&s->zpci_devs); return 0; } -static int s390_pci_setup_msix(S390PCIBusDevice *pbdev) +static int s390_pci_msix_init(S390PCIBusDevice *pbdev) { + char *name; uint8_t pos; uint16_t ctrl; uint32_t table, pba; @@ -569,7 +592,7 @@ static int s390_pci_setup_msix(S390PCIBusDevice *pbdev) pos = pci_find_capability(pbdev->pdev, PCI_CAP_ID_MSIX); if (!pos) { pbdev->msix.available = false; - return 0; + return -1; } ctrl = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_FLAGS, @@ -585,21 +608,15 @@ static int s390_pci_setup_msix(S390PCIBusDevice *pbdev) pbdev->msix.pba_offset = pba & ~PCI_MSIX_FLAGS_BIRMASK; pbdev->msix.entries = (ctrl & PCI_MSIX_FLAGS_QSIZE) + 1; pbdev->msix.available = true; - return 0; -} - -static void s390_pci_msix_init(S390PCIBusDevice *pbdev) -{ - char *name; name = g_strdup_printf("msix-s390-%04x", pbdev->uid); - memory_region_init_io(&pbdev->msix_notify_mr, OBJECT(pbdev), &s390_msi_ctrl_ops, pbdev, name, PAGE_SIZE); memory_region_add_subregion(&pbdev->iommu->mr, ZPCI_MSI_ADDR, &pbdev->msix_notify_mr); - g_free(name); + + return 0; } static void s390_pci_msix_free(S390PCIBusDevice *pbdev) @@ -608,10 +625,10 @@ static void s390_pci_msix_free(S390PCIBusDevice *pbdev) object_unparent(OBJECT(&pbdev->msix_notify_mr)); } -static S390PCIBusDevice *s390_pci_device_new(const char *target) +static S390PCIBusDevice *s390_pci_device_new(S390pciState *s, + const char *target) { DeviceState *dev = NULL; - S390pciState *s = s390_get_phb(); dev = qdev_try_create(BUS(s->bus), TYPE_S390_PCI_DEVICE); if (!dev) { @@ -624,6 +641,24 @@ static S390PCIBusDevice *s390_pci_device_new(const char *target) return S390_PCI_DEVICE(dev); } +static bool s390_pci_alloc_idx(S390pciState *s, S390PCIBusDevice *pbdev) +{ + uint32_t idx; + + idx = s->next_idx; + while (s390_pci_find_dev_by_idx(s, idx)) { + idx = (idx + 1) & FH_MASK_INDEX; + if (idx == s->next_idx) { + return false; + } + } + + pbdev->idx = idx; + s->next_idx = (idx + 1) & FH_MASK_INDEX; + + return true; +} + static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -631,7 +666,28 @@ static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev, S390PCIBusDevice *pbdev = NULL; S390pciState *s = s390_get_phb(); - if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { + if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { + BusState *bus; + PCIBridge *pb = PCI_BRIDGE(dev); + PCIDevice *pdev = PCI_DEVICE(dev); + + pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq); + pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s); + + bus = BUS(&pb->sec_bus); + qbus_set_hotplug_handler(bus, DEVICE(s), errp); + + if (dev->hotplugged) { + pci_default_write_config(pdev, PCI_PRIMARY_BUS, s->bus_no, 1); + s->bus_no += 1; + pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1); + do { + pdev = pdev->bus->parent_dev; + pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, + s->bus_no, 1); + } while (pdev->bus && pci_bus_num(pdev->bus)); + } + } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { pdev = PCI_DEVICE(dev); if (!dev->id) { @@ -643,9 +699,9 @@ static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev, PCI_FUNC(pdev->devfn)); } - pbdev = s390_pci_find_dev_by_target(dev->id); + pbdev = s390_pci_find_dev_by_target(s, dev->id); if (!pbdev) { - pbdev = s390_pci_device_new(dev->id); + pbdev = s390_pci_device_new(s, dev->id); if (!pbdev) { error_setg(errp, "create zpci device failed"); return; @@ -659,29 +715,30 @@ static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev, } pbdev->pdev = pdev; - pbdev->iommu = s->iommu[PCI_SLOT(pdev->devfn)]; + pbdev->iommu = s390_pci_get_iommu(s, pdev->bus, pdev->devfn); + pbdev->iommu->pbdev = pbdev; pbdev->state = ZPCI_FS_STANDBY; - s390_pci_msix_init(pbdev); - s390_pci_setup_msix(pbdev); + if (s390_pci_msix_init(pbdev)) { + error_setg(errp, "MSI-X support is mandatory " + "in the S390 architecture"); + return; + } if (dev->hotplugged) { s390_pci_generate_plug_event(HP_EVENT_RESERVED_TO_STANDBY, pbdev->fh, pbdev->fid); } } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { - int idx; - pbdev = S390_PCI_DEVICE(dev); - for (idx = 0; idx < PCI_SLOT_MAX; idx++) { - if (!s->pbdev[idx]) { - s->pbdev[idx] = pbdev; - pbdev->fh = idx; - return; - } - } - error_setg(errp, "no slot for plugging zpci device"); + if (!s390_pci_alloc_idx(s, pbdev)) { + error_setg(errp, "no slot for plugging zpci device"); + return; + } + pbdev->fh = pbdev->idx; + QTAILQ_INSERT_TAIL(&s->zpci_devs, pbdev, link); + g_hash_table_insert(s->zpci_table, &pbdev->idx, pbdev); } } @@ -692,8 +749,8 @@ static void s390_pcihost_timer_cb(void *opaque) if (pbdev->summary_ind) { pci_dereg_irqs(pbdev); } - if (pbdev->iommu_enabled) { - pci_dereg_ioat(pbdev); + if (pbdev->iommu->enabled) { + pci_dereg_ioat(pbdev->iommu); } pbdev->state = ZPCI_FS_STANDBY; @@ -705,17 +762,20 @@ static void s390_pcihost_timer_cb(void *opaque) static void s390_pcihost_hot_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { - int i; PCIDevice *pci_dev = NULL; + PCIBus *bus; + int32_t devfn; S390PCIBusDevice *pbdev = NULL; S390pciState *s = s390_get_phb(); - if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { + if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { + error_setg(errp, "PCI bridge hot unplug currently not supported"); + return; + } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { pci_dev = PCI_DEVICE(dev); - for (i = 0 ; i < PCI_SLOT_MAX; i++) { - if (s->pbdev[i] && s->pbdev[i]->pdev == pci_dev) { - pbdev = s->pbdev[i]; + QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { + if (pbdev->pdev == pci_dev) { break; } } @@ -749,16 +809,58 @@ static void s390_pcihost_hot_unplug(HotplugHandler *hotplug_dev, s390_pci_generate_plug_event(HP_EVENT_STANDBY_TO_RESERVED, pbdev->fh, pbdev->fid); + bus = pci_dev->bus; + devfn = pci_dev->devfn; object_unparent(OBJECT(pci_dev)); s390_pci_msix_free(pbdev); + s390_pci_iommu_free(s, bus, devfn); pbdev->pdev = NULL; pbdev->state = ZPCI_FS_RESERVED; out: pbdev->fid = 0; - s->pbdev[pbdev->fh & FH_MASK_INDEX] = NULL; + QTAILQ_REMOVE(&s->zpci_devs, pbdev, link); + g_hash_table_remove(s->zpci_table, &pbdev->idx); object_unparent(OBJECT(pbdev)); } +static void s390_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev, + void *opaque) +{ + S390pciState *s = opaque; + unsigned int primary = s->bus_no; + unsigned int subordinate = 0xff; + PCIBus *sec_bus = NULL; + + if ((pci_default_read_config(pdev, PCI_HEADER_TYPE, 1) != + PCI_HEADER_TYPE_BRIDGE)) { + return; + } + + (s->bus_no)++; + pci_default_write_config(pdev, PCI_PRIMARY_BUS, primary, 1); + pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1); + pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1); + + sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); + if (!sec_bus) { + return; + } + + pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, subordinate, 1); + pci_for_each_device(sec_bus, pci_bus_num(sec_bus), + s390_pci_enumerate_bridge, s); + pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1); +} + +static void s390_pcihost_reset(DeviceState *dev) +{ + S390pciState *s = S390_PCI_HOST_BRIDGE(dev); + PCIBus *bus = s->parent_obj.bus; + + s->bus_no = 0; + pci_for_each_device(bus, pci_bus_num(bus), s390_pci_enumerate_bridge, s); +} + static void s390_pcihost_class_init(ObjectClass *klass, void *data) { SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); @@ -766,6 +868,7 @@ static void s390_pcihost_class_init(ObjectClass *klass, void *data) HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); dc->cannot_instantiate_with_device_add_yet = true; + dc->reset = s390_pcihost_reset; k->init = s390_pcihost_init; hc->plug = s390_pcihost_hot_plug; hc->unplug = s390_pcihost_hot_unplug; @@ -789,13 +892,13 @@ static const TypeInfo s390_pcibus_info = { .instance_size = sizeof(S390PCIBus), }; -static uint16_t s390_pci_generate_uid(void) +static uint16_t s390_pci_generate_uid(S390pciState *s) { uint16_t uid = 0; do { uid++; - if (!s390_pci_find_dev_by_uid(uid)) { + if (!s390_pci_find_dev_by_uid(s, uid)) { return uid; } } while (uid < ZPCI_MAX_UID); @@ -803,12 +906,12 @@ static uint16_t s390_pci_generate_uid(void) return UID_UNDEFINED; } -static uint32_t s390_pci_generate_fid(Error **errp) +static uint32_t s390_pci_generate_fid(S390pciState *s, Error **errp) { uint32_t fid = 0; do { - if (!s390_pci_find_dev_by_fid(fid)) { + if (!s390_pci_find_dev_by_fid(s, fid)) { return fid; } } while (fid++ != ZPCI_MAX_FID); @@ -820,25 +923,26 @@ static uint32_t s390_pci_generate_fid(Error **errp) static void s390_pci_device_realize(DeviceState *dev, Error **errp) { S390PCIBusDevice *zpci = S390_PCI_DEVICE(dev); + S390pciState *s = s390_get_phb(); if (!zpci->target) { error_setg(errp, "target must be defined"); return; } - if (s390_pci_find_dev_by_target(zpci->target)) { + if (s390_pci_find_dev_by_target(s, zpci->target)) { error_setg(errp, "target %s already has an associated zpci device", zpci->target); return; } if (zpci->uid == UID_UNDEFINED) { - zpci->uid = s390_pci_generate_uid(); + zpci->uid = s390_pci_generate_uid(s); if (!zpci->uid) { error_setg(errp, "no free uid could be found"); return; } - } else if (s390_pci_find_dev_by_uid(zpci->uid)) { + } else if (s390_pci_find_dev_by_uid(s, zpci->uid)) { error_setg(errp, "uid %u already in use", zpci->uid); return; } @@ -846,12 +950,12 @@ static void s390_pci_device_realize(DeviceState *dev, Error **errp) if (!zpci->fid_defined) { Error *local_error = NULL; - zpci->fid = s390_pci_generate_fid(&local_error); + zpci->fid = s390_pci_generate_fid(s, &local_error); if (local_error) { error_propagate(errp, local_error); return; } - } else if (s390_pci_find_dev_by_fid(zpci->fid)) { + } else if (s390_pci_find_dev_by_fid(s, zpci->fid)) { error_setg(errp, "fid %u already in use", zpci->fid); return; } @@ -877,8 +981,8 @@ static void s390_pci_device_reset(DeviceState *dev) if (pbdev->summary_ind) { pci_dereg_irqs(pbdev); } - if (pbdev->iommu_enabled) { - pci_dereg_ioat(pbdev); + if (pbdev->iommu->enabled) { + pci_dereg_ioat(pbdev->iommu); } pbdev->fmb_addr = 0; @@ -944,11 +1048,18 @@ static const TypeInfo s390_pci_device_info = { .class_init = s390_pci_device_class_init, }; +static TypeInfo s390_pci_iommu_info = { + .name = TYPE_S390_PCI_IOMMU, + .parent = TYPE_OBJECT, + .instance_size = sizeof(S390PCIIOMMU), +}; + static void s390_pci_register_types(void) { type_register_static(&s390_pcihost_info); type_register_static(&s390_pcibus_info); type_register_static(&s390_pci_device_info); + type_register_static(&s390_pci_iommu_info); } type_init(s390_pci_register_types) diff --git a/hw/s390x/s390-pci-bus.h b/hw/s390x/s390-pci-bus.h index 7f27013..b0adefa 100644 --- a/hw/s390x/s390-pci-bus.h +++ b/hw/s390x/s390-pci-bus.h @@ -23,10 +23,11 @@ #define TYPE_S390_PCI_HOST_BRIDGE "s390-pcihost" #define TYPE_S390_PCI_BUS "s390-pcibus" #define TYPE_S390_PCI_DEVICE "zpci" +#define TYPE_S390_PCI_IOMMU "s390-pci-iommu" #define FH_MASK_ENABLE 0x80000000 #define FH_MASK_INSTANCE 0x7f000000 #define FH_MASK_SHM 0x00ff0000 -#define FH_MASK_INDEX 0x0000001f +#define FH_MASK_INDEX 0x0000ffff #define FH_SHM_VFIO 0x00010000 #define FH_SHM_EMUL 0x00020000 #define S390_PCIPT_ADAPTER 2 @@ -42,6 +43,8 @@ OBJECT_CHECK(S390PCIBus, (obj), TYPE_S390_PCI_BUS) #define S390_PCI_DEVICE(obj) \ OBJECT_CHECK(S390PCIBusDevice, (obj), TYPE_S390_PCI_DEVICE) +#define S390_PCI_IOMMU(obj) \ + OBJECT_CHECK(S390PCIIOMMU, (obj), TYPE_S390_PCI_IOMMU) #define HP_EVENT_TO_CONFIGURED 0x0301 #define HP_EVENT_RESERVED_TO_STANDBY 0x0302 @@ -258,24 +261,34 @@ typedef struct S390MsixInfo { uint32_t pba_offset; } S390MsixInfo; +typedef struct S390PCIBusDevice S390PCIBusDevice; typedef struct S390PCIIOMMU { + Object parent_obj; + S390PCIBusDevice *pbdev; AddressSpace as; MemoryRegion mr; + MemoryRegion iommu_mr; + bool enabled; + uint64_t g_iota; + uint64_t pba; + uint64_t pal; } S390PCIIOMMU; +typedef struct S390PCIIOMMUTable { + uint64_t key; + S390PCIIOMMU *iommu[PCI_SLOT_MAX]; +} S390PCIIOMMUTable; + typedef struct S390PCIBusDevice { DeviceState qdev; PCIDevice *pdev; ZpciState state; - bool iommu_enabled; char *target; uint16_t uid; + uint32_t idx; uint32_t fh; uint32_t fid; bool fid_defined; - uint64_t g_iota; - uint64_t pba; - uint64_t pal; uint64_t fmb_addr; uint8_t isc; uint16_t noi; @@ -283,11 +296,11 @@ typedef struct S390PCIBusDevice { S390MsixInfo msix; AdapterRoutes routes; S390PCIIOMMU *iommu; - MemoryRegion iommu_mr; MemoryRegion msix_notify_mr; IndAddr *summary_ind; IndAddr *indicator; QEMUTimer *release_timer; + QTAILQ_ENTRY(S390PCIBusDevice) link; } S390PCIBusDevice; typedef struct S390PCIBus { @@ -296,23 +309,28 @@ typedef struct S390PCIBus { typedef struct S390pciState { PCIHostState parent_obj; + uint32_t next_idx; + int bus_no; S390PCIBus *bus; - S390PCIBusDevice *pbdev[PCI_SLOT_MAX]; - S390PCIIOMMU *iommu[PCI_SLOT_MAX]; + GHashTable *iommu_table; + GHashTable *zpci_table; QTAILQ_HEAD(, SeiContainer) pending_sei; + QTAILQ_HEAD(, S390PCIBusDevice) zpci_devs; } S390pciState; +S390pciState *s390_get_phb(void); int chsc_sei_nt2_get_event(void *res); int chsc_sei_nt2_have_event(void); void s390_pci_sclp_configure(SCCB *sccb); void s390_pci_sclp_deconfigure(SCCB *sccb); -void s390_pci_iommu_enable(S390PCIBusDevice *pbdev); -void s390_pci_iommu_disable(S390PCIBusDevice *pbdev); +void s390_pci_iommu_enable(S390PCIIOMMU *iommu); +void s390_pci_iommu_disable(S390PCIIOMMU *iommu); void s390_pci_generate_error_event(uint16_t pec, uint32_t fh, uint32_t fid, uint64_t faddr, uint32_t e); -S390PCIBusDevice *s390_pci_find_dev_by_idx(uint32_t idx); -S390PCIBusDevice *s390_pci_find_dev_by_fh(uint32_t fh); -S390PCIBusDevice *s390_pci_find_dev_by_fid(uint32_t fid); -S390PCIBusDevice *s390_pci_find_next_avail_dev(S390PCIBusDevice *pbdev); +S390PCIBusDevice *s390_pci_find_dev_by_idx(S390pciState *s, uint32_t idx); +S390PCIBusDevice *s390_pci_find_dev_by_fh(S390pciState *s, uint32_t fh); +S390PCIBusDevice *s390_pci_find_dev_by_fid(S390pciState *s, uint32_t fid); +S390PCIBusDevice *s390_pci_find_next_avail_dev(S390pciState *s, + S390PCIBusDevice *pbdev); #endif diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index 0864d9b..405cccd 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -38,6 +38,7 @@ static void s390_set_status_code(CPUS390XState *env, static int list_pci(ClpReqRspListPci *rrb, uint8_t *cc) { S390PCIBusDevice *pbdev = NULL; + S390pciState *s = s390_get_phb(); uint32_t res_code, initial_l2, g_l2; int rc, i; uint64_t resume_token; @@ -65,14 +66,14 @@ static int list_pci(ClpReqRspListPci *rrb, uint8_t *cc) resume_token = ldq_p(&rrb->request.resume_token); if (resume_token) { - pbdev = s390_pci_find_dev_by_idx(resume_token); + pbdev = s390_pci_find_dev_by_idx(s, resume_token); if (!pbdev) { res_code = CLP_RC_LISTPCI_BADRT; rc = -EINVAL; goto out; } } else { - pbdev = s390_pci_find_next_avail_dev(NULL); + pbdev = s390_pci_find_next_avail_dev(s, NULL); } if (lduw_p(&rrb->response.hdr.len) < 48) { @@ -118,7 +119,7 @@ static int list_pci(ClpReqRspListPci *rrb, uint8_t *cc) lduw_p(&rrb->response.fh_list[i].device_id), ldl_p(&rrb->response.fh_list[i].fid), ldl_p(&rrb->response.fh_list[i].fh)); - pbdev = s390_pci_find_next_avail_dev(pbdev); + pbdev = s390_pci_find_next_avail_dev(s, pbdev); i++; } @@ -148,6 +149,7 @@ int clp_service_call(S390CPU *cpu, uint8_t r2) uint8_t buffer[4096 * 2]; uint8_t cc = 0; CPUS390XState *env = &cpu->env; + S390pciState *s = s390_get_phb(); int i; cpu_synchronize_state(CPU(cpu)); @@ -202,7 +204,7 @@ int clp_service_call(S390CPU *cpu, uint8_t r2) ClpReqSetPci *reqsetpci = (ClpReqSetPci *)reqh; ClpRspSetPci *ressetpci = (ClpRspSetPci *)resh; - pbdev = s390_pci_find_dev_by_fh(ldl_p(&reqsetpci->fh)); + pbdev = s390_pci_find_dev_by_fh(s, ldl_p(&reqsetpci->fh)); if (!pbdev) { stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FH); goto out; @@ -253,7 +255,7 @@ int clp_service_call(S390CPU *cpu, uint8_t r2) ClpReqQueryPci *reqquery = (ClpReqQueryPci *)reqh; ClpRspQueryPci *resquery = (ClpRspQueryPci *)resh; - pbdev = s390_pci_find_dev_by_fh(ldl_p(&reqquery->fh)); + pbdev = s390_pci_find_dev_by_fh(s, ldl_p(&reqquery->fh)); if (!pbdev) { DPRINTF("query pci no pci dev\n"); stw_p(&resquery->hdr.rsp, CLP_RC_SETPCIFN_FH); @@ -338,7 +340,7 @@ int pcilg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) len = env->regs[r2] & 0xf; offset = env->regs[r2 + 1]; - pbdev = s390_pci_find_dev_by_fh(fh); + pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh); if (!pbdev) { DPRINTF("pcilg no pci dev\n"); setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE); @@ -471,7 +473,7 @@ int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) len = env->regs[r2] & 0xf; offset = env->regs[r2 + 1]; - pbdev = s390_pci_find_dev_by_fh(fh); + pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh); if (!pbdev) { DPRINTF("pcistg no pci dev\n"); setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE); @@ -555,6 +557,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) CPUS390XState *env = &cpu->env; uint32_t fh; S390PCIBusDevice *pbdev; + S390PCIIOMMU *iommu; hwaddr start, end; IOMMUTLBEntry entry; MemoryRegion *mr; @@ -575,7 +578,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) start = env->regs[r2]; end = start + env->regs[r2 + 1]; - pbdev = s390_pci_find_dev_by_fh(fh); + pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh); if (!pbdev) { DPRINTF("rpcit no pci dev\n"); setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE); @@ -597,7 +600,8 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) break; } - if (!pbdev->g_iota) { + iommu = pbdev->iommu; + if (!iommu->g_iota) { pbdev->state = ZPCI_FS_ERROR; setcc(cpu, ZPCI_PCI_LS_ERR); s390_set_status_code(env, r1, ZPCI_PCI_ST_INSUF_RES); @@ -606,7 +610,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) goto out; } - if (end < pbdev->pba || start > pbdev->pal) { + if (end < iommu->pba || start > iommu->pal) { pbdev->state = ZPCI_FS_ERROR; setcc(cpu, ZPCI_PCI_LS_ERR); s390_set_status_code(env, r1, ZPCI_PCI_ST_INSUF_RES); @@ -615,7 +619,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) goto out; } - mr = &pbdev->iommu_mr; + mr = &iommu->iommu_mr; while (start < end) { entry = mr->iommu_ops->translate(mr, start, 0); @@ -677,7 +681,7 @@ int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr, return 0; } - pbdev = s390_pci_find_dev_by_fh(fh); + pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh); if (!pbdev) { DPRINTF("pcistb no pci dev fh 0x%x\n", fh); setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE); @@ -783,7 +787,7 @@ int pci_dereg_irqs(S390PCIBusDevice *pbdev) return 0; } -static int reg_ioat(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib) +static int reg_ioat(CPUS390XState *env, S390PCIIOMMU *iommu, ZpciFib fib) { uint64_t pba = ldq_p(&fib.pba); uint64_t pal = ldq_p(&fib.pal); @@ -803,21 +807,21 @@ static int reg_ioat(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib) return -EINVAL; } - pbdev->pba = pba; - pbdev->pal = pal; - pbdev->g_iota = g_iota; + iommu->pba = pba; + iommu->pal = pal; + iommu->g_iota = g_iota; - s390_pci_iommu_enable(pbdev); + s390_pci_iommu_enable(iommu); return 0; } -void pci_dereg_ioat(S390PCIBusDevice *pbdev) +void pci_dereg_ioat(S390PCIIOMMU *iommu) { - s390_pci_iommu_disable(pbdev); - pbdev->pba = 0; - pbdev->pal = 0; - pbdev->g_iota = 0; + s390_pci_iommu_disable(iommu); + iommu->pba = 0; + iommu->pal = 0; + iommu->g_iota = 0; } int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) @@ -843,7 +847,7 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) return 0; } - pbdev = s390_pci_find_dev_by_fh(fh); + pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh); if (!pbdev) { DPRINTF("mpcifc no pci dev fh 0x%x\n", fh); setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE); @@ -892,10 +896,10 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) if (dmaas != 0) { cc = ZPCI_PCI_LS_ERR; s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL); - } else if (pbdev->iommu_enabled) { + } else if (pbdev->iommu->enabled) { cc = ZPCI_PCI_LS_ERR; s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE); - } else if (reg_ioat(env, pbdev, fib)) { + } else if (reg_ioat(env, pbdev->iommu, fib)) { cc = ZPCI_PCI_LS_ERR; s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES); } @@ -904,23 +908,23 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) if (dmaas != 0) { cc = ZPCI_PCI_LS_ERR; s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL); - } else if (!pbdev->iommu_enabled) { + } else if (!pbdev->iommu->enabled) { cc = ZPCI_PCI_LS_ERR; s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE); } else { - pci_dereg_ioat(pbdev); + pci_dereg_ioat(pbdev->iommu); } break; case ZPCI_MOD_FC_REREG_IOAT: if (dmaas != 0) { cc = ZPCI_PCI_LS_ERR; s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL); - } else if (!pbdev->iommu_enabled) { + } else if (!pbdev->iommu->enabled) { cc = ZPCI_PCI_LS_ERR; s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE); } else { - pci_dereg_ioat(pbdev); - if (reg_ioat(env, pbdev, fib)) { + pci_dereg_ioat(pbdev->iommu); + if (reg_ioat(env, pbdev->iommu, fib)) { cc = ZPCI_PCI_LS_ERR; s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES); } @@ -988,7 +992,7 @@ int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) return 0; } - pbdev = s390_pci_find_dev_by_idx(fh & FH_MASK_INDEX); + pbdev = s390_pci_find_dev_by_idx(s390_get_phb(), fh & FH_MASK_INDEX); if (!pbdev) { setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE); return 0; @@ -1015,7 +1019,7 @@ int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) fib.fc |= 0x40; case ZPCI_FS_ENABLED: fib.fc |= 0x80; - if (pbdev->iommu_enabled) { + if (pbdev->iommu->enabled) { fib.fc |= 0x10; } if (!(fh & FH_MASK_ENABLE)) { @@ -1028,9 +1032,9 @@ int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) return 0; } - stq_p(&fib.pba, pbdev->pba); - stq_p(&fib.pal, pbdev->pal); - stq_p(&fib.iota, pbdev->g_iota); + stq_p(&fib.pba, pbdev->iommu->pba); + stq_p(&fib.pal, pbdev->iommu->pal); + stq_p(&fib.iota, pbdev->iommu->g_iota); stq_p(&fib.aibv, pbdev->routes.adapter.ind_addr); stq_p(&fib.aisb, pbdev->routes.adapter.summary_addr); stq_p(&fib.fmb_addr, pbdev->fmb_addr); diff --git a/hw/s390x/s390-pci-inst.h b/hw/s390x/s390-pci-inst.h index 23f4bfa..94a959f 100644 --- a/hw/s390x/s390-pci-inst.h +++ b/hw/s390x/s390-pci-inst.h @@ -292,7 +292,7 @@ typedef struct ZpciFib { } QEMU_PACKED ZpciFib; int pci_dereg_irqs(S390PCIBusDevice *pbdev); -void pci_dereg_ioat(S390PCIBusDevice *pbdev); +void pci_dereg_ioat(S390PCIIOMMU *iommu); int clp_service_call(S390CPU *cpu, uint8_t r2); int pcilg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2); int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2); diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index e340eab..e9a6767 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -335,11 +335,13 @@ static const TypeInfo ccw_machine_info = { } \ type_init(ccw_machine_register_##suffix) +#define CCW_COMPAT_2_8 \ + HW_COMPAT_2_8 + #define CCW_COMPAT_2_7 \ HW_COMPAT_2_7 #define CCW_COMPAT_2_6 \ - CCW_COMPAT_2_7 \ HW_COMPAT_2_6 \ {\ .driver = TYPE_S390_IPL,\ @@ -352,7 +354,6 @@ static const TypeInfo ccw_machine_info = { }, #define CCW_COMPAT_2_5 \ - CCW_COMPAT_2_6 \ HW_COMPAT_2_5 #define CCW_COMPAT_2_4 \ @@ -395,14 +396,26 @@ static const TypeInfo ccw_machine_info = { .value = "0",\ }, +static void ccw_machine_2_9_instance_options(MachineState *machine) +{ +} + +static void ccw_machine_2_9_class_options(MachineClass *mc) +{ +} +DEFINE_CCW_MACHINE(2_9, "2.9", true); + static void ccw_machine_2_8_instance_options(MachineState *machine) { + ccw_machine_2_9_instance_options(machine); } static void ccw_machine_2_8_class_options(MachineClass *mc) { + ccw_machine_2_9_class_options(mc); + SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_8); } -DEFINE_CCW_MACHINE(2_8, "2.8", true); +DEFINE_CCW_MACHINE(2_8, "2.8", false); static void ccw_machine_2_7_instance_options(MachineState *machine) { diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 0765068..63c4637 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -149,7 +149,7 @@ static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info, } else { if (info) { /* virtio-1 allows changing the ring size. */ - if (virtio_queue_get_num(vdev, index) < num) { + if (virtio_queue_get_max_num(vdev, index) < num) { /* Fail if we exceed the maximum number. */ return -EINVAL; } diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 6e34f05..ac9b99b 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1249,6 +1249,11 @@ int virtio_queue_get_num(VirtIODevice *vdev, int n) return vdev->vq[n].vring.num; } +int virtio_queue_get_max_num(VirtIODevice *vdev, int n) +{ + return vdev->vq[n].vring.num_default; +} + int virtio_get_num_queues(VirtIODevice *vdev) { int i; |