[RFC,v5,05/19] virtio: support more feature bits

Message ID	1417525227-14051-6-git-send-email-cornelia.huck@de.ibm.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <kvm-owner@kernel.org> Gateway: Authorized Use Only! Violators will be prosecuted for <kvm@vger.kernel.org> from <cornelia.huck@de.ibm.com>; Tue, 2 Dec 2014 13:00:40 -0000 Gateway: Authorized Use Only! Violators will be prosecuted; Tue, 2 Dec 2014 13:00:39 -0000 From: Cornelia Huck <cornelia.huck@de.ibm.com> To: virtualization@lists.linux-foundation.org, qemu-devel@nongnu.org, kvm@vger.kernel.org Cc: rusty@rustcorp.com.au, thuth@linux.vnet.ibm.com, mst@redhat.com, Cornelia Huck <cornelia.huck@de.ibm.com> Subject: [PATCH RFC v5 05/19] virtio: support more feature bits Date: Tue, 2 Dec 2014 14:00:13 +0100 Message-Id: <1417525227-14051-6-git-send-email-cornelia.huck@de.ibm.com> In-Reply-To: <1417525227-14051-1-git-send-email-cornelia.huck@de.ibm.com> References: <1417525227-14051-1-git-send-email-cornelia.huck@de.ibm.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk

diff --git a/hw/9pfs/virtio-9p-device.c b/hw/9pfs/virtio-9p-device.c index 30492ec..60f9ff9 100644 --- a/hw/9pfs/virtio-9p-device.c +++ b/hw/9pfs/virtio-9p-device.c @@ -21,7 +21,7 @@ #include "virtio-9p-coth.h" #include "hw/virtio/virtio-access.h" -static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features) +static uint64_t virtio_9p_get_features(VirtIODevice *vdev, uint64_t features) { virtio_add_feature(&features, VIRTIO_9P_MOUNT_TAG); return features; diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index 27f263a..9cfae66 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -564,7 +564,7 @@ static void virtio_blk_set_config(VirtIODevice *vdev, const uint8_t *config) aio_context_release(blk_get_aio_context(s->blk)); } -static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features) +static uint64_t virtio_blk_get_features(VirtIODevice *vdev, uint64_t features) { VirtIOBlock *s = VIRTIO_BLK(vdev); diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c index d49883f..2d2ed9c 100644 --- a/hw/char/virtio-serial-bus.c +++ b/hw/char/virtio-serial-bus.c @@ -467,7 +467,7 @@ static void handle_input(VirtIODevice *vdev, VirtQueue *vq) { } -static uint32_t get_features(VirtIODevice *vdev, uint32_t features) +static uint64_t get_features(VirtIODevice *vdev, uint64_t features) { VirtIOSerial *vser; diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 9f3c58a..d6d1b98 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -38,16 +38,16 @@ (offsetof(container, field) + sizeof(((container *)0)->field)) typedef struct VirtIOFeature { - uint32_t flags; + uint64_t flags; size_t end; } VirtIOFeature; static VirtIOFeature feature_sizes[] = { - {.flags = 1 << VIRTIO_NET_F_MAC, + {.flags = 1ULL << VIRTIO_NET_F_MAC, .end = endof(struct virtio_net_config, mac)}, - {.flags = 1 << VIRTIO_NET_F_STATUS, + {.flags = 1ULL << VIRTIO_NET_F_STATUS, .end = endof(struct virtio_net_config, status)}, - {.flags = 1 << VIRTIO_NET_F_MQ, + {.flags = 1ULL << VIRTIO_NET_F_MQ, .end = endof(struct virtio_net_config, max_virtqueue_pairs)}, {} }; @@ -441,7 +441,7 @@ static void virtio_net_set_queues(VirtIONet *n) static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue); -static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features) +static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features) { VirtIONet *n = VIRTIO_NET(vdev); NetClientState *nc = qemu_get_queue(n->nic); @@ -471,9 +471,9 @@ static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features) return vhost_net_get_features(get_vhost_net(nc->peer), features); } -static uint32_t virtio_net_bad_features(VirtIODevice *vdev) +static uint64_t virtio_net_bad_features(VirtIODevice *vdev) { - uint32_t features = 0; + uint64_t features = 0; /* Linux kernel 2.6.25. It understood MAC (as everyone must), * but also these: */ @@ -496,7 +496,7 @@ static void virtio_net_apply_guest_offloads(VirtIONet *n) !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_UFO))); } -static uint64_t virtio_net_guest_offloads_by_features(uint32_t features) +static uint64_t virtio_net_guest_offloads_by_features(uint64_t features) { static const uint64_t guest_offloads_mask = (1ULL << VIRTIO_NET_F_GUEST_CSUM) | @@ -514,7 +514,7 @@ static inline uint64_t virtio_net_supported_guest_offloads(VirtIONet *n) return virtio_net_guest_offloads_by_features(vdev->guest_features); } -static void virtio_net_set_features(VirtIODevice *vdev, uint32_t features) +static void virtio_net_set_features(VirtIODevice *vdev, uint64_t features) { VirtIONet *n = VIRTIO_NET(vdev); int i; @@ -1036,7 +1036,7 @@ static ssize_t virtio_net_receive(NetClientState *nc, const uint8_t *buf, size_t return -1; error_report("virtio-net unexpected empty queue: " "i %zd mergeable %d offset %zd, size %zd, " - "guest hdr len %zd, host hdr len %zd guest features 0x%x", + "guest hdr len %zd, host hdr len %zd guest features 0x%lx", i, n->mergeable_rx_bufs, offset, size, n->guest_hdr_len, n->host_hdr_len, vdev->guest_features); exit(1); @@ -1560,7 +1560,7 @@ static void virtio_net_guest_notifier_mask(VirtIODevice *vdev, int idx, vdev, idx, mask); } -void virtio_net_set_config_size(VirtIONet *n, uint32_t host_features) +void virtio_net_set_config_size(VirtIONet *n, uint64_t host_features) { int i, config_size = 0; virtio_add_feature(&host_features, VIRTIO_NET_F_MAC); diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c index 39dc201..3635909 100644 --- a/hw/s390x/s390-virtio-bus.c +++ b/hw/s390x/s390-virtio-bus.c @@ -490,9 +490,10 @@ static void virtio_s390_notify(DeviceState *d, uint16_t vector) s390_virtio_irq(0, token); } -static unsigned virtio_s390_get_features(DeviceState *d) +static uint64_t virtio_s390_get_features(DeviceState *d) { VirtIOS390Device *dev = to_virtio_s390_device(d); + return dev->host_features; } diff --git a/hw/s390x/s390-virtio-bus.h b/hw/s390x/s390-virtio-bus.h index ffd0df7..e49d4ba 100644 --- a/hw/s390x/s390-virtio-bus.h +++ b/hw/s390x/s390-virtio-bus.h @@ -90,7 +90,7 @@ struct VirtIOS390Device { ram_addr_t feat_offs; uint8_t feat_len; VirtIODevice *vdev; - uint32_t host_features; + uint64_t host_features; VirtioBusState bus; }; diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 3fee4aa..e434718 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -371,8 +371,10 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) } else { features.index = ldub_phys(&address_space_memory, ccw.cda + sizeof(features.features)); - if (features.index < ARRAY_SIZE(dev->host_features)) { - features.features = dev->host_features[features.index]; + if (features.index == 0) { + features.features = (uint32_t)dev->host_features; + } else if (features.index == 1) { + features.features = (uint32_t)(dev->host_features >> 32); } else { /* Return zeroes if the guest supports more feature bits. */ features.features = 0; @@ -399,8 +401,14 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) features.index = ldub_phys(&address_space_memory, ccw.cda + sizeof(features.features)); features.features = ldl_le_phys(&address_space_memory, ccw.cda); - if (features.index < ARRAY_SIZE(dev->host_features)) { - virtio_set_features(vdev, features.features); + if (features.index == 0) { + virtio_set_features(vdev, + (vdev->guest_features & 0xffffffff00000000) | + features.features); + } else if (features.index == 1) { + virtio_set_features(vdev, + (vdev->guest_features & 0x00000000ffffffff) | + ((uint64_t)features.features << 32)); } else { /* * If the guest supports more feature bits, assert that it @@ -739,12 +747,13 @@ static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev) sch->id.cu_type = VIRTIO_CCW_CU_TYPE; sch->id.cu_model = vdev->device_id; - /* Only the first 32 feature bits are used. */ - dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus, - dev->host_features[0]); + /* Set default feature bits that are offered by the host. */ + dev->host_features = 0; + virtio_add_feature(&dev->host_features, VIRTIO_F_NOTIFY_ON_EMPTY); + virtio_add_feature(&dev->host_features, VIRTIO_F_BAD_FEATURE); - virtio_add_feature(&dev->host_features[0], VIRTIO_F_NOTIFY_ON_EMPTY); - virtio_add_feature(&dev->host_features[0], VIRTIO_F_BAD_FEATURE); + dev->host_features = virtio_bus_get_vdev_features(&dev->bus, + dev->host_features); css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, parent->hotplugged, 1); @@ -777,7 +786,7 @@ static int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev) VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); - virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features[0]); + virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features); virtio_net_set_netclient_name(&dev->vdev, qdev->id, object_get_typename(OBJECT(qdev))); qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); @@ -1063,12 +1072,11 @@ static void virtio_ccw_notify(DeviceState *d, uint16_t vector) } } -static unsigned virtio_ccw_get_features(DeviceState *d) +static uint64_t 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]; + return dev->host_features; } static void virtio_ccw_reset(DeviceState *d) @@ -1381,7 +1389,7 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) static Property virtio_ccw_net_properties[] = { DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), - DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]), + DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_END_OF_LIST(), @@ -1486,7 +1494,7 @@ static const TypeInfo virtio_ccw_balloon = { static Property virtio_ccw_scsi_properties[] = { DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), - DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]), + DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_END_OF_LIST(), @@ -1614,7 +1622,7 @@ static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, } static Property virtio_ccw_properties[] = { - DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), + DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h index 5a1f16e..9087f7a 100644 --- a/hw/s390x/virtio-ccw.h +++ b/hw/s390x/virtio-ccw.h @@ -68,9 +68,6 @@ typedef struct VirtIOCCWDeviceClass { int (*exit)(VirtioCcwDevice *dev); } VirtIOCCWDeviceClass; -/* Change here if we want to support more feature bits. */ -#define VIRTIO_CCW_FEATURE_SIZE 1 - /* Performance improves when virtqueue kick processing is decoupled from the * vcpu thread using ioeventfd for some devices. */ #define VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT 1 @@ -88,7 +85,7 @@ struct VirtioCcwDevice { DeviceState parent_obj; SubchDev *sch; char *bus_id; - uint32_t host_features[VIRTIO_CCW_FEATURE_SIZE]; + uint64_t host_features; VirtioBusState bus; bool ioeventfd_started; bool ioeventfd_disabled; diff --git a/hw/scsi/vhost-scsi.c b/hw/scsi/vhost-scsi.c index 308b393..68e0489 100644 --- a/hw/scsi/vhost-scsi.c +++ b/hw/scsi/vhost-scsi.c @@ -150,8 +150,7 @@ static void vhost_scsi_stop(VHostSCSI *s) vhost_dev_disable_notifiers(&s->dev, vdev); } -static uint32_t vhost_scsi_get_features(VirtIODevice *vdev, - uint32_t features) +static uint64_t vhost_scsi_get_features(VirtIODevice *vdev, uint64_t features) { VHostSCSI *s = VHOST_SCSI(vdev); diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 56c92fb..fbac794 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -627,8 +627,8 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, - uint32_t requested_features) +static uint64_t virtio_scsi_get_features(VirtIODevice *vdev, + uint64_t requested_features) { return requested_features; } diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index 21e449a..d2d7c3e 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -303,7 +303,7 @@ static void virtio_balloon_set_config(VirtIODevice *vdev, } } -static uint32_t virtio_balloon_get_features(VirtIODevice *vdev, uint32_t f) +static uint64_t virtio_balloon_get_features(VirtIODevice *vdev, uint64_t f) { f |= (1 << VIRTIO_BALLOON_F_STATS_VQ); return f; diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index a8ffa07..32e3fab 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -97,8 +97,8 @@ size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus) } /* Get the features of the plugged device. */ -uint32_t virtio_bus_get_vdev_features(VirtioBusState *bus, - uint32_t requested_features) +uint64_t virtio_bus_get_vdev_features(VirtioBusState *bus, + uint64_t requested_features) { VirtIODevice *vdev = virtio_bus_get_device(bus); VirtioDeviceClass *k; @@ -110,7 +110,7 @@ uint32_t virtio_bus_get_vdev_features(VirtioBusState *bus, } /* Get bad features of the plugged device. */ -uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus) +uint64_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus) { VirtIODevice *vdev = virtio_bus_get_device(bus); VirtioDeviceClass *k; diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index 10123f3..43b7e02 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -80,7 +80,7 @@ typedef struct { SysBusDevice parent_obj; MemoryRegion iomem; qemu_irq irq; - uint32_t host_features; + uint64_t host_features; /* Guest accessible state needing migration and reset */ uint32_t host_features_sel; uint32_t guest_features_sel; @@ -306,7 +306,7 @@ static void virtio_mmio_update_irq(DeviceState *opaque, uint16_t vector) qemu_set_irq(proxy->irq, level); } -static unsigned int virtio_mmio_get_features(DeviceState *opaque) +static uint64_t virtio_mmio_get_features(DeviceState *opaque) { VirtIOMMIOProxy *proxy = VIRTIO_MMIO(opaque); diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index e7969bf..7382705 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -478,9 +478,10 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, } } -static unsigned virtio_pci_get_features(DeviceState *d) +static uint64_t virtio_pci_get_features(DeviceState *d) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + return proxy->host_features; } diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h index 8873b6d..85f102d 100644 --- a/hw/virtio/virtio-pci.h +++ b/hw/virtio/virtio-pci.h @@ -91,7 +91,7 @@ struct VirtIOPCIProxy { uint32_t flags; uint32_t class_code; uint32_t nvectors; - uint32_t host_features; + uint64_t host_features; bool ioeventfd_disabled; bool ioeventfd_started; VirtIOIRQFD *vector_irqfd; diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c index 473c044..edd39cc 100644 --- a/hw/virtio/virtio-rng.c +++ b/hw/virtio/virtio-rng.c @@ -99,7 +99,7 @@ static void handle_input(VirtIODevice *vdev, VirtQueue *vq) virtio_rng_process(vrng); } -static uint32_t get_features(VirtIODevice *vdev, uint32_t f) +static uint64_t get_features(VirtIODevice *vdev, uint64_t f) { return f; } diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 5814433..7f74ae5 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -593,6 +593,7 @@ void virtio_reset(void *opaque) } vdev->guest_features = 0; + vdev->queue_sel = 0; vdev->status = 0; vdev->isr = 0; @@ -924,7 +925,8 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f) qemu_put_8s(f, &vdev->status); qemu_put_8s(f, &vdev->isr); qemu_put_be16s(f, &vdev->queue_sel); - qemu_put_be32s(f, &vdev->guest_features); + /* XXX features >= 32 */ + qemu_put_be32s(f, (uint32_t *)&vdev->guest_features); qemu_put_be32(f, vdev->config_len); qemu_put_buffer(f, vdev->config, vdev->config_len); @@ -958,12 +960,12 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f) vmstate_save_state(f, &vmstate_virtio, vdev); } -int virtio_set_features(VirtIODevice *vdev, uint32_t val) +int virtio_set_features(VirtIODevice *vdev, uint64_t val) { BusState *qbus = qdev_get_parent_bus(DEVICE(vdev)); VirtioBusClass *vbusk = VIRTIO_BUS_GET_CLASS(qbus); VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); - uint32_t supported_features = vbusk->get_features(qbus->parent); + uint64_t supported_features = vbusk->get_features(qbus->parent); bool bad = (val & ~supported_features) != 0; val &= supported_features; @@ -980,7 +982,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id) int32_t config_len; uint32_t num; uint32_t features; - uint32_t supported_features; + uint64_t supported_features; BusState *qbus = qdev_get_parent_bus(DEVICE(vdev)); VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev); @@ -1005,9 +1007,10 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id) } qemu_get_be32s(f, &features); + /* XXX features >= 32 */ if (virtio_set_features(vdev, features) < 0) { supported_features = k->get_features(qbus->parent); - error_report("Features 0x%x unsupported. Allowed features: 0x%x", + error_report("Features 0x%x unsupported. Allowed features: 0x%lx", features, supported_features); return -1; } diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index 070006c..23d713b 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -51,6 +51,17 @@ extern PropertyInfo qdev_prop_arraylen; .defval = (bool)_defval, \ } +#define DEFINE_PROP_BIT64(_name, _state, _field, _bit, _defval) { \ + .name = (_name), \ + .info = &(qdev_prop_bit), \ + .bitnr = (_bit), \ + .offset = offsetof(_state, _field) \ + + type_check(uint64_t,typeof_field(_state, _field)), \ + .qtype = QTYPE_QBOOL, \ + .defval = (bool)_defval, \ + } + + #define DEFINE_PROP_BOOL(_name, _state, _field, _defval) { \ .name = (_name), \ .info = &(qdev_prop_bool), \ diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h index 0d2e7b4..0a4dde1 100644 --- a/include/hw/virtio/virtio-bus.h +++ b/include/hw/virtio/virtio-bus.h @@ -47,7 +47,7 @@ typedef struct VirtioBusClass { int (*load_config)(DeviceState *d, QEMUFile *f); int (*load_queue)(DeviceState *d, int n, QEMUFile *f); int (*load_done)(DeviceState *d, QEMUFile *f); - unsigned (*get_features)(DeviceState *d); + uint64_t (*get_features)(DeviceState *d); bool (*query_guest_notifiers)(DeviceState *d); int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assign); int (*set_host_notifier)(DeviceState *d, int n, bool assigned); @@ -82,10 +82,10 @@ uint16_t virtio_bus_get_vdev_id(VirtioBusState *bus); /* Get the config_len field of the plugged device. */ size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus); /* Get the features of the plugged device. */ -uint32_t virtio_bus_get_vdev_features(VirtioBusState *bus, - uint32_t requested_features); +uint64_t virtio_bus_get_vdev_features(VirtioBusState *bus, + uint64_t requested_features); /* Get bad features of the plugged device. */ -uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus); +uint64_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus); /* Get config of the plugged device. */ void virtio_bus_get_vdev_config(VirtioBusState *bus, uint8_t *config); /* Set config of the plugged device. */ diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h index 6ceb5aa..5c58b4b 100644 --- a/include/hw/virtio/virtio-net.h +++ b/include/hw/virtio/virtio-net.h @@ -258,35 +258,35 @@ struct virtio_net_ctrl_mq { #define VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET 0 #define DEFINE_VIRTIO_NET_FEATURES(_state, _field) \ - DEFINE_PROP_BIT("any_layout", _state, _field, VIRTIO_F_ANY_LAYOUT, true), \ - DEFINE_PROP_BIT("csum", _state, _field, VIRTIO_NET_F_CSUM, true), \ - DEFINE_PROP_BIT("guest_csum", _state, _field, VIRTIO_NET_F_GUEST_CSUM, true), \ - DEFINE_PROP_BIT("gso", _state, _field, VIRTIO_NET_F_GSO, true), \ - DEFINE_PROP_BIT("guest_tso4", _state, _field, VIRTIO_NET_F_GUEST_TSO4, true), \ - DEFINE_PROP_BIT("guest_tso6", _state, _field, VIRTIO_NET_F_GUEST_TSO6, true), \ - DEFINE_PROP_BIT("guest_ecn", _state, _field, VIRTIO_NET_F_GUEST_ECN, true), \ - DEFINE_PROP_BIT("guest_ufo", _state, _field, VIRTIO_NET_F_GUEST_UFO, true), \ - DEFINE_PROP_BIT("guest_announce", _state, _field, VIRTIO_NET_F_GUEST_ANNOUNCE, true), \ - DEFINE_PROP_BIT("host_tso4", _state, _field, VIRTIO_NET_F_HOST_TSO4, true), \ - DEFINE_PROP_BIT("host_tso6", _state, _field, VIRTIO_NET_F_HOST_TSO6, true), \ - DEFINE_PROP_BIT("host_ecn", _state, _field, VIRTIO_NET_F_HOST_ECN, true), \ - DEFINE_PROP_BIT("host_ufo", _state, _field, VIRTIO_NET_F_HOST_UFO, true), \ - DEFINE_PROP_BIT("mrg_rxbuf", _state, _field, VIRTIO_NET_F_MRG_RXBUF, true), \ - DEFINE_PROP_BIT("status", _state, _field, VIRTIO_NET_F_STATUS, true), \ - DEFINE_PROP_BIT("ctrl_vq", _state, _field, VIRTIO_NET_F_CTRL_VQ, true), \ - DEFINE_PROP_BIT("ctrl_rx", _state, _field, VIRTIO_NET_F_CTRL_RX, true), \ - DEFINE_PROP_BIT("ctrl_vlan", _state, _field, VIRTIO_NET_F_CTRL_VLAN, true), \ - DEFINE_PROP_BIT("ctrl_rx_extra", _state, _field, VIRTIO_NET_F_CTRL_RX_EXTRA, true), \ - DEFINE_PROP_BIT("ctrl_mac_addr", _state, _field, VIRTIO_NET_F_CTRL_MAC_ADDR, true), \ - DEFINE_PROP_BIT("ctrl_guest_offloads", _state, _field, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, true), \ - DEFINE_PROP_BIT("mq", _state, _field, VIRTIO_NET_F_MQ, false) + DEFINE_PROP_BIT64("any_layout", _state, _field, VIRTIO_F_ANY_LAYOUT, true), \ + DEFINE_PROP_BIT64("csum", _state, _field, VIRTIO_NET_F_CSUM, true), \ + DEFINE_PROP_BIT64("guest_csum", _state, _field, VIRTIO_NET_F_GUEST_CSUM, true), \ + DEFINE_PROP_BIT64("gso", _state, _field, VIRTIO_NET_F_GSO, true), \ + DEFINE_PROP_BIT64("guest_tso4", _state, _field, VIRTIO_NET_F_GUEST_TSO4, true), \ + DEFINE_PROP_BIT64("guest_tso6", _state, _field, VIRTIO_NET_F_GUEST_TSO6, true), \ + DEFINE_PROP_BIT64("guest_ecn", _state, _field, VIRTIO_NET_F_GUEST_ECN, true), \ + DEFINE_PROP_BIT64("guest_ufo", _state, _field, VIRTIO_NET_F_GUEST_UFO, true), \ + DEFINE_PROP_BIT64("guest_announce", _state, _field, VIRTIO_NET_F_GUEST_ANNOUNCE, true), \ + DEFINE_PROP_BIT64("host_tso4", _state, _field, VIRTIO_NET_F_HOST_TSO4, true), \ + DEFINE_PROP_BIT64("host_tso6", _state, _field, VIRTIO_NET_F_HOST_TSO6, true), \ + DEFINE_PROP_BIT64("host_ecn", _state, _field, VIRTIO_NET_F_HOST_ECN, true), \ + DEFINE_PROP_BIT64("host_ufo", _state, _field, VIRTIO_NET_F_HOST_UFO, true), \ + DEFINE_PROP_BIT64("mrg_rxbuf", _state, _field, VIRTIO_NET_F_MRG_RXBUF, true), \ + DEFINE_PROP_BIT64("status", _state, _field, VIRTIO_NET_F_STATUS, true), \ + DEFINE_PROP_BIT64("ctrl_vq", _state, _field, VIRTIO_NET_F_CTRL_VQ, true), \ + DEFINE_PROP_BIT64("ctrl_rx", _state, _field, VIRTIO_NET_F_CTRL_RX, true), \ + DEFINE_PROP_BIT64("ctrl_vlan", _state, _field, VIRTIO_NET_F_CTRL_VLAN, true), \ + DEFINE_PROP_BIT64("ctrl_rx_extra", _state, _field, VIRTIO_NET_F_CTRL_RX_EXTRA, true), \ + DEFINE_PROP_BIT64("ctrl_mac_addr", _state, _field, VIRTIO_NET_F_CTRL_MAC_ADDR, true), \ + DEFINE_PROP_BIT64("ctrl_guest_offloads", _state, _field, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, true), \ + DEFINE_PROP_BIT64("mq", _state, _field, VIRTIO_NET_F_MQ, false) #define DEFINE_VIRTIO_NET_PROPERTIES(_state, _field) \ DEFINE_PROP_UINT32("x-txtimer", _state, _field.txtimer, TX_TIMER_INTERVAL),\ DEFINE_PROP_INT32("x-txburst", _state, _field.txburst, TX_BURST), \ DEFINE_PROP_STRING("tx", _state, _field.tx) -void virtio_net_set_config_size(VirtIONet *n, uint32_t host_features); +void virtio_net_set_config_size(VirtIONet *n, uint64_t host_features); void virtio_net_set_netclient_name(VirtIONet *n, const char *name, const char *type); diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h index bf17cc9..f0c0a6e 100644 --- a/include/hw/virtio/virtio-scsi.h +++ b/include/hw/virtio/virtio-scsi.h @@ -253,11 +253,11 @@ QEMU_BUILD_BUG_ON(offsetof(VirtIOSCSIReq, req.cdb) != DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128) #define DEFINE_VIRTIO_SCSI_FEATURES(_state, _feature_field) \ - DEFINE_PROP_BIT("any_layout", _state, _feature_field, \ + DEFINE_PROP_BIT64("any_layout", _state, _feature_field, \ VIRTIO_F_ANY_LAYOUT, true), \ - DEFINE_PROP_BIT("hotplug", _state, _feature_field, VIRTIO_SCSI_F_HOTPLUG, \ + DEFINE_PROP_BIT64("hotplug", _state, _feature_field, VIRTIO_SCSI_F_HOTPLUG, \ true), \ - DEFINE_PROP_BIT("param_change", _state, _feature_field, \ + DEFINE_PROP_BIT64("param_change", _state, _feature_field, \ VIRTIO_SCSI_F_CHANGE, true) typedef void (*HandleOutput)(VirtIODevice *, VirtQueue *); diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index f6c0379..08141c7 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -55,6 +55,12 @@ /* A guest should never accept this. It implies negotiation is broken. */ #define VIRTIO_F_BAD_FEATURE 30 +/* v1.0 compliant. */ +#define VIRTIO_F_VERSION_1 32 + +/* The highest feature bit that we support */ +#define VIRTIO_HIGHEST_FEATURE_BIT 32 + /* from Linux's linux/virtio_ring.h */ /* This marks a buffer as continuing via the next field. */ @@ -117,7 +123,7 @@ struct VirtIODevice uint8_t status; uint8_t isr; uint16_t queue_sel; - uint32_t guest_features; + uint64_t guest_features; size_t config_len; void *config; uint16_t config_vector; @@ -138,9 +144,9 @@ typedef struct VirtioDeviceClass { /* This is what a VirtioDevice must implement */ DeviceRealize realize; DeviceUnrealize unrealize; - uint32_t (*get_features)(VirtIODevice *vdev, uint32_t requested_features); - uint32_t (*bad_features)(VirtIODevice *vdev); - void (*set_features)(VirtIODevice *vdev, uint32_t val); + uint64_t (*get_features)(VirtIODevice *vdev, uint64_t requested_features); + uint64_t (*bad_features)(VirtIODevice *vdev); + void (*set_features)(VirtIODevice *vdev, uint64_t val); void (*get_config)(VirtIODevice *vdev, uint8_t *config); void (*set_config)(VirtIODevice *vdev, const uint8_t *config); void (*reset)(VirtIODevice *vdev); @@ -225,7 +231,7 @@ void virtio_queue_set_vector(VirtIODevice *vdev, int n, uint16_t vector); void virtio_set_status(VirtIODevice *vdev, uint8_t val); void virtio_reset(void *opaque); void virtio_update_irq(VirtIODevice *vdev); -int virtio_set_features(VirtIODevice *vdev, uint32_t val); +int virtio_set_features(VirtIODevice *vdev, uint64_t val); /* Base devices. */ typedef struct VirtIOBlkConf VirtIOBlkConf; @@ -238,9 +244,9 @@ typedef struct VirtIOSCSIConf VirtIOSCSIConf; typedef struct VirtIORNGConf VirtIORNGConf; #define DEFINE_VIRTIO_COMMON_FEATURES(_state, _field) \ - DEFINE_PROP_BIT("indirect_desc", _state, _field, \ + DEFINE_PROP_BIT64("indirect_desc", _state, _field, \ VIRTIO_RING_F_INDIRECT_DESC, true), \ - DEFINE_PROP_BIT("event_idx", _state, _field, \ + DEFINE_PROP_BIT64("event_idx", _state, _field, \ VIRTIO_RING_F_EVENT_IDX, true) hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n); @@ -266,22 +272,22 @@ void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign, void virtio_queue_notify_vq(VirtQueue *vq); void virtio_irq(VirtQueue *vq); -static inline void virtio_add_feature(uint32_t *features, unsigned int fbit) +static inline void virtio_add_feature(uint64_t *features, unsigned int fbit) { - assert(fbit < 32); - *features |= (1 << fbit); + assert(fbit < 64); + *features |= (1ULL << fbit); } -static inline void virtio_clear_feature(uint32_t *features, unsigned int fbit) +static inline void virtio_clear_feature(uint64_t *features, unsigned int fbit) { - assert(fbit < 32); - *features &= ~(1 << fbit); + assert(fbit < 64); + *features &= ~(1ULL << fbit); } -static inline bool __virtio_has_feature(uint32_t features, unsigned int fbit) +static inline bool __virtio_has_feature(uint64_t features, unsigned int fbit) { - assert(fbit < 32); - return !!(features & (1 << fbit)); + assert(fbit < 64); + return !!(features & (1ULL << fbit)); } static inline bool virtio_has_feature(VirtIODevice *vdev, unsigned int fbit)

[RFC,v5,05/19] virtio: support more feature bits

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