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-rw-r--r--include/hw/virtio/dataplane/hostmem.h57
-rw-r--r--include/hw/virtio/dataplane/vring.h62
-rw-r--r--include/hw/virtio/vhost.h68
-rw-r--r--include/hw/virtio/virtio-9p.h24
-rw-r--r--include/hw/virtio/virtio-balloon.h72
-rw-r--r--include/hw/virtio/virtio-blk.h152
-rw-r--r--include/hw/virtio/virtio-bus.h94
-rw-r--r--include/hw/virtio/virtio-net.h246
-rw-r--r--include/hw/virtio/virtio-rng.h47
-rw-r--r--include/hw/virtio/virtio-scsi.h66
-rw-r--r--include/hw/virtio/virtio-serial.h247
-rw-r--r--include/hw/virtio/virtio.h292
12 files changed, 1427 insertions, 0 deletions
diff --git a/include/hw/virtio/dataplane/hostmem.h b/include/hw/virtio/dataplane/hostmem.h
new file mode 100644
index 0000000000..b2cf09333f
--- /dev/null
+++ b/include/hw/virtio/dataplane/hostmem.h
@@ -0,0 +1,57 @@
+/*
+ * Thread-safe guest to host memory mapping
+ *
+ * Copyright 2012 Red Hat, Inc. and/or its affiliates
+ *
+ * Authors:
+ * Stefan Hajnoczi <stefanha@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef HOSTMEM_H
+#define HOSTMEM_H
+
+#include "exec/memory.h"
+#include "qemu/thread.h"
+
+typedef struct {
+ void *host_addr;
+ hwaddr guest_addr;
+ uint64_t size;
+ bool readonly;
+} HostMemRegion;
+
+typedef struct {
+ /* The listener is invoked when regions change and a new list of regions is
+ * built up completely before they are installed.
+ */
+ MemoryListener listener;
+ HostMemRegion *new_regions;
+ size_t num_new_regions;
+
+ /* Current regions are accessed from multiple threads either to lookup
+ * addresses or to install a new list of regions. The lock protects the
+ * pointer and the regions.
+ */
+ QemuMutex current_regions_lock;
+ HostMemRegion *current_regions;
+ size_t num_current_regions;
+} HostMem;
+
+void hostmem_init(HostMem *hostmem);
+void hostmem_finalize(HostMem *hostmem);
+
+/**
+ * Map a guest physical address to a pointer
+ *
+ * Note that there is map/unmap mechanism here. The caller must ensure that
+ * mapped memory is no longer used across events like hot memory unplug. This
+ * can be done with other mechanisms like bdrv_drain_all() that quiesce
+ * in-flight I/O.
+ */
+void *hostmem_lookup(HostMem *hostmem, hwaddr phys, hwaddr len, bool is_write);
+
+#endif /* HOSTMEM_H */
diff --git a/include/hw/virtio/dataplane/vring.h b/include/hw/virtio/dataplane/vring.h
new file mode 100644
index 0000000000..9380cb5413
--- /dev/null
+++ b/include/hw/virtio/dataplane/vring.h
@@ -0,0 +1,62 @@
+/* Copyright 2012 Red Hat, Inc. and/or its affiliates
+ * Copyright IBM, Corp. 2012
+ *
+ * Based on Linux 2.6.39 vhost code:
+ * Copyright (C) 2009 Red Hat, Inc.
+ * Copyright (C) 2006 Rusty Russell IBM Corporation
+ *
+ * Author: Michael S. Tsirkin <mst@redhat.com>
+ * Stefan Hajnoczi <stefanha@redhat.com>
+ *
+ * Inspiration, some code, and most witty comments come from
+ * Documentation/virtual/lguest/lguest.c, by Rusty Russell
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ */
+
+#ifndef VRING_H
+#define VRING_H
+
+#include <linux/virtio_ring.h>
+#include "qemu-common.h"
+#include "hostmem.h"
+#include "hw/virtio/virtio.h"
+
+typedef struct {
+ HostMem hostmem; /* guest memory mapper */
+ struct vring vr; /* virtqueue vring mapped to host memory */
+ uint16_t last_avail_idx; /* last processed avail ring index */
+ uint16_t last_used_idx; /* last processed used ring index */
+ uint16_t signalled_used; /* EVENT_IDX state */
+ bool signalled_used_valid;
+ bool broken; /* was there a fatal error? */
+} Vring;
+
+static inline unsigned int vring_get_num(Vring *vring)
+{
+ return vring->vr.num;
+}
+
+/* Are there more descriptors available? */
+static inline bool vring_more_avail(Vring *vring)
+{
+ return vring->vr.avail->idx != vring->last_avail_idx;
+}
+
+/* Fail future vring_pop() and vring_push() calls until reset */
+static inline void vring_set_broken(Vring *vring)
+{
+ vring->broken = true;
+}
+
+bool vring_setup(Vring *vring, VirtIODevice *vdev, int n);
+void vring_teardown(Vring *vring);
+void vring_disable_notification(VirtIODevice *vdev, Vring *vring);
+bool vring_enable_notification(VirtIODevice *vdev, Vring *vring);
+bool vring_should_notify(VirtIODevice *vdev, Vring *vring);
+int vring_pop(VirtIODevice *vdev, Vring *vring,
+ struct iovec iov[], struct iovec *iov_end,
+ unsigned int *out_num, unsigned int *in_num);
+void vring_push(Vring *vring, unsigned int head, int len);
+
+#endif /* VRING_H */
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
new file mode 100644
index 0000000000..b373be0387
--- /dev/null
+++ b/include/hw/virtio/vhost.h
@@ -0,0 +1,68 @@
+#ifndef VHOST_H
+#define VHOST_H
+
+#include "hw/hw.h"
+#include "hw/virtio/virtio.h"
+#include "exec/memory.h"
+
+/* Generic structures common for any vhost based device. */
+struct vhost_virtqueue {
+ int kick;
+ int call;
+ void *desc;
+ void *avail;
+ void *used;
+ int num;
+ unsigned long long used_phys;
+ unsigned used_size;
+ void *ring;
+ unsigned long long ring_phys;
+ unsigned ring_size;
+ EventNotifier masked_notifier;
+};
+
+typedef unsigned long vhost_log_chunk_t;
+#define VHOST_LOG_PAGE 0x1000
+#define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t))
+#define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS)
+
+struct vhost_memory;
+struct vhost_dev {
+ MemoryListener memory_listener;
+ int control;
+ struct vhost_memory *mem;
+ int n_mem_sections;
+ MemoryRegionSection *mem_sections;
+ struct vhost_virtqueue *vqs;
+ int nvqs;
+ /* the first virtuque which would be used by this vhost dev */
+ int vq_index;
+ unsigned long long features;
+ unsigned long long acked_features;
+ unsigned long long backend_features;
+ bool started;
+ bool log_enabled;
+ vhost_log_chunk_t *log;
+ unsigned long long log_size;
+ bool force;
+};
+
+int vhost_dev_init(struct vhost_dev *hdev, int devfd, const char *devpath,
+ bool force);
+void vhost_dev_cleanup(struct vhost_dev *hdev);
+bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev);
+int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev);
+void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev);
+int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
+void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
+
+/* Test and clear masked event pending status.
+ * Should be called after unmask to avoid losing events.
+ */
+bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n);
+
+/* Mask/unmask events from this vq.
+ */
+void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n,
+ bool mask);
+#endif
diff --git a/include/hw/virtio/virtio-9p.h b/include/hw/virtio/virtio-9p.h
new file mode 100644
index 0000000000..65789db131
--- /dev/null
+++ b/include/hw/virtio/virtio-9p.h
@@ -0,0 +1,24 @@
+/*
+ * Virtio 9p
+ *
+ * Copyright IBM, Corp. 2010
+ *
+ * Authors:
+ * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef QEMU_VIRTIO_9P_DEVICE_H
+#define QEMU_VIRTIO_9P_DEVICE_H
+
+typedef struct V9fsConf
+{
+ /* tag name for the device */
+ char *tag;
+ char *fsdev_id;
+} V9fsConf;
+
+#endif
diff --git a/include/hw/virtio/virtio-balloon.h b/include/hw/virtio/virtio-balloon.h
new file mode 100644
index 0000000000..3b459bbdd7
--- /dev/null
+++ b/include/hw/virtio/virtio-balloon.h
@@ -0,0 +1,72 @@
+/*
+ * Virtio Support
+ *
+ * Copyright IBM, Corp. 2007-2008
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ * Rusty Russell <rusty@rustcorp.com.au>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef _QEMU_VIRTIO_BALLOON_H
+#define _QEMU_VIRTIO_BALLOON_H
+
+#include "hw/virtio/virtio.h"
+#include "hw/pci/pci.h"
+
+#define TYPE_VIRTIO_BALLOON "virtio-balloon"
+#define VIRTIO_BALLOON(obj) \
+ OBJECT_CHECK(VirtIOBalloon, (obj), TYPE_VIRTIO_BALLOON)
+
+/* from Linux's linux/virtio_balloon.h */
+
+/* The ID for virtio_balloon */
+#define VIRTIO_ID_BALLOON 5
+
+/* The feature bitmap for virtio balloon */
+#define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */
+#define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory stats virtqueue */
+
+/* Size of a PFN in the balloon interface. */
+#define VIRTIO_BALLOON_PFN_SHIFT 12
+
+struct virtio_balloon_config
+{
+ /* Number of pages host wants Guest to give up. */
+ uint32_t num_pages;
+ /* Number of pages we've actually got in balloon. */
+ uint32_t actual;
+};
+
+/* Memory Statistics */
+#define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */
+#define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */
+#define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */
+#define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */
+#define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */
+#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
+#define VIRTIO_BALLOON_S_NR 6
+
+typedef struct VirtIOBalloonStat {
+ uint16_t tag;
+ uint64_t val;
+} QEMU_PACKED VirtIOBalloonStat;
+
+typedef struct VirtIOBalloon {
+ VirtIODevice parent_obj;
+ VirtQueue *ivq, *dvq, *svq;
+ uint32_t num_pages;
+ uint32_t actual;
+ uint64_t stats[VIRTIO_BALLOON_S_NR];
+ VirtQueueElement stats_vq_elem;
+ size_t stats_vq_offset;
+ QEMUTimer *stats_timer;
+ int64_t stats_last_update;
+ int64_t stats_poll_interval;
+} VirtIOBalloon;
+
+#endif
diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h
new file mode 100644
index 0000000000..c10d069b25
--- /dev/null
+++ b/include/hw/virtio/virtio-blk.h
@@ -0,0 +1,152 @@
+/*
+ * Virtio Block Device
+ *
+ * Copyright IBM, Corp. 2007
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef _QEMU_VIRTIO_BLK_H
+#define _QEMU_VIRTIO_BLK_H
+
+#include "hw/virtio/virtio.h"
+#include "hw/block/block.h"
+
+#define TYPE_VIRTIO_BLK "virtio-blk"
+#define VIRTIO_BLK(obj) \
+ OBJECT_CHECK(VirtIOBlock, (obj), TYPE_VIRTIO_BLK)
+
+/* from Linux's linux/virtio_blk.h */
+
+/* The ID for virtio_block */
+#define VIRTIO_ID_BLOCK 2
+
+/* Feature bits */
+#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
+#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */
+#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */
+#define VIRTIO_BLK_F_GEOMETRY 4 /* Indicates support of legacy geometry */
+#define VIRTIO_BLK_F_RO 5 /* Disk is read-only */
+#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/
+#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
+/* #define VIRTIO_BLK_F_IDENTIFY 8 ATA IDENTIFY supported, DEPRECATED */
+#define VIRTIO_BLK_F_WCE 9 /* write cache enabled */
+#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
+#define VIRTIO_BLK_F_CONFIG_WCE 11 /* write cache configurable */
+
+#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
+
+struct virtio_blk_config
+{
+ uint64_t capacity;
+ uint32_t size_max;
+ uint32_t seg_max;
+ uint16_t cylinders;
+ uint8_t heads;
+ uint8_t sectors;
+ uint32_t blk_size;
+ uint8_t physical_block_exp;
+ uint8_t alignment_offset;
+ uint16_t min_io_size;
+ uint32_t opt_io_size;
+ uint8_t wce;
+} QEMU_PACKED;
+
+/* These two define direction. */
+#define VIRTIO_BLK_T_IN 0
+#define VIRTIO_BLK_T_OUT 1
+
+/* This bit says it's a scsi command, not an actual read or write. */
+#define VIRTIO_BLK_T_SCSI_CMD 2
+
+/* Flush the volatile write cache */
+#define VIRTIO_BLK_T_FLUSH 4
+
+/* return the device ID string */
+#define VIRTIO_BLK_T_GET_ID 8
+
+/* Barrier before this op. */
+#define VIRTIO_BLK_T_BARRIER 0x80000000
+
+/* This is the first element of the read scatter-gather list. */
+struct virtio_blk_outhdr
+{
+ /* VIRTIO_BLK_T* */
+ uint32_t type;
+ /* io priority. */
+ uint32_t ioprio;
+ /* Sector (ie. 512 byte offset) */
+ uint64_t sector;
+};
+
+#define VIRTIO_BLK_S_OK 0
+#define VIRTIO_BLK_S_IOERR 1
+#define VIRTIO_BLK_S_UNSUPP 2
+
+/* This is the last element of the write scatter-gather list */
+struct virtio_blk_inhdr
+{
+ unsigned char status;
+};
+
+/* SCSI pass-through header */
+struct virtio_scsi_inhdr
+{
+ uint32_t errors;
+ uint32_t data_len;
+ uint32_t sense_len;
+ uint32_t residual;
+};
+
+struct VirtIOBlkConf
+{
+ BlockConf conf;
+ char *serial;
+ uint32_t scsi;
+ uint32_t config_wce;
+ uint32_t data_plane;
+};
+
+struct VirtIOBlockDataPlane;
+
+typedef struct VirtIOBlock {
+ VirtIODevice parent_obj;
+ BlockDriverState *bs;
+ VirtQueue *vq;
+ void *rq;
+ QEMUBH *bh;
+ BlockConf *conf;
+ VirtIOBlkConf blk;
+ unsigned short sector_mask;
+ VMChangeStateEntry *change;
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+ struct VirtIOBlockDataPlane *dataplane;
+#endif
+} VirtIOBlock;
+
+#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
+ DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
+
+#ifdef __linux__
+#define DEFINE_VIRTIO_BLK_PROPERTIES(_state, _field) \
+ DEFINE_BLOCK_PROPERTIES(_state, _field.conf), \
+ DEFINE_BLOCK_CHS_PROPERTIES(_state, _field.conf), \
+ DEFINE_PROP_STRING("serial", _state, _field.serial), \
+ DEFINE_PROP_BIT("config-wce", _state, _field.config_wce, 0, true), \
+ DEFINE_PROP_BIT("scsi", _state, _field.scsi, 0, true)
+#else
+#define DEFINE_VIRTIO_BLK_PROPERTIES(_state, _field) \
+ DEFINE_BLOCK_PROPERTIES(_state, _field.conf), \
+ DEFINE_BLOCK_CHS_PROPERTIES(_state, _field.conf), \
+ DEFINE_PROP_STRING("serial", _state, _field.serial), \
+ DEFINE_PROP_BIT("config-wce", _state, _field.config_wce, 0, true)
+#endif /* __linux__ */
+
+void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk);
+
+#endif
diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h
new file mode 100644
index 0000000000..311e8c78bd
--- /dev/null
+++ b/include/hw/virtio/virtio-bus.h
@@ -0,0 +1,94 @@
+/*
+ * VirtioBus
+ *
+ * Copyright (C) 2012 : GreenSocs Ltd
+ * http://www.greensocs.com/ , email: info@greensocs.com
+ *
+ * Developed by :
+ * Frederic Konrad <fred.konrad@greensocs.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef VIRTIO_BUS_H
+#define VIRTIO_BUS_H
+
+#include "hw/qdev.h"
+#include "sysemu/sysemu.h"
+#include "hw/virtio/virtio.h"
+
+#define TYPE_VIRTIO_BUS "virtio-bus"
+#define VIRTIO_BUS_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(VirtioBusClass, obj, TYPE_VIRTIO_BUS)
+#define VIRTIO_BUS_CLASS(klass) \
+ OBJECT_CLASS_CHECK(VirtioBusClass, klass, TYPE_VIRTIO_BUS)
+#define VIRTIO_BUS(obj) OBJECT_CHECK(VirtioBusState, (obj), TYPE_VIRTIO_BUS)
+
+typedef struct VirtioBusState VirtioBusState;
+
+typedef struct VirtioBusClass {
+ /* This is what a VirtioBus must implement */
+ BusClass parent;
+ void (*notify)(DeviceState *d, uint16_t vector);
+ void (*save_config)(DeviceState *d, QEMUFile *f);
+ void (*save_queue)(DeviceState *d, int n, QEMUFile *f);
+ 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);
+ 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);
+ void (*vmstate_change)(DeviceState *d, bool running);
+ /*
+ * transport independent init function.
+ * This is called by virtio-bus just after the device is plugged.
+ */
+ void (*device_plugged)(DeviceState *d);
+ /*
+ * transport independent exit function.
+ * This is called by virtio-bus just before the device is unplugged.
+ */
+ void (*device_unplug)(DeviceState *d);
+} VirtioBusClass;
+
+struct VirtioBusState {
+ BusState parent_obj;
+ /*
+ * Only one VirtIODevice can be plugged on the bus.
+ */
+ VirtIODevice *vdev;
+ /*
+ * This will be removed at the end of the series.
+ */
+ VirtIOBindings bindings;
+};
+
+int virtio_bus_plug_device(VirtIODevice *vdev);
+void virtio_bus_reset(VirtioBusState *bus);
+void virtio_bus_destroy_device(VirtioBusState *bus);
+/* Get the device id of the plugged device. */
+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);
+/* Get bad features of the plugged device. */
+uint32_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);
+
+#endif /* VIRTIO_BUS_H */
diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
new file mode 100644
index 0000000000..d2cc996872
--- /dev/null
+++ b/include/hw/virtio/virtio-net.h
@@ -0,0 +1,246 @@
+/*
+ * Virtio Network Device
+ *
+ * Copyright IBM, Corp. 2007
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef _QEMU_VIRTIO_NET_H
+#define _QEMU_VIRTIO_NET_H
+
+#include "hw/virtio/virtio.h"
+#include "hw/pci/pci.h"
+
+#define ETH_ALEN 6
+
+/* from Linux's virtio_net.h */
+
+/* The ID for virtio_net */
+#define VIRTIO_ID_NET 1
+
+/* The feature bitmap for virtio net */
+#define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */
+#define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */
+#define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */
+#define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */
+#define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */
+#define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */
+#define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */
+#define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */
+#define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */
+#define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */
+#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */
+#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */
+#define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */
+#define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */
+#define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel available */
+#define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support */
+#define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering */
+#define VIRTIO_NET_F_CTRL_RX_EXTRA 20 /* Extra RX mode control support */
+#define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow
+ * Steering */
+
+#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */
+
+#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */
+
+#define TX_TIMER_INTERVAL 150000 /* 150 us */
+
+/* Limit the number of packets that can be sent via a single flush
+ * of the TX queue. This gives us a guaranteed exit condition and
+ * ensures fairness in the io path. 256 conveniently matches the
+ * length of the TX queue and shows a good balance of performance
+ * and latency. */
+#define TX_BURST 256
+
+typedef struct virtio_net_conf
+{
+ uint32_t txtimer;
+ int32_t txburst;
+ char *tx;
+} virtio_net_conf;
+
+/* Maximum packet size we can receive from tap device: header + 64k */
+#define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 << 10))
+
+struct virtio_net_config
+{
+ /* The config defining mac address ($ETH_ALEN bytes) */
+ uint8_t mac[ETH_ALEN];
+ /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */
+ uint16_t status;
+ /* Max virtqueue pairs supported by the device */
+ uint16_t max_virtqueue_pairs;
+} QEMU_PACKED;
+
+/*
+ * Control virtqueue data structures
+ *
+ * The control virtqueue expects a header in the first sg entry
+ * and an ack/status response in the last entry. Data for the
+ * command goes in between.
+ */
+struct virtio_net_ctrl_hdr {
+ uint8_t class;
+ uint8_t cmd;
+};
+
+typedef uint8_t virtio_net_ctrl_ack;
+
+#define VIRTIO_NET_OK 0
+#define VIRTIO_NET_ERR 1
+
+/*
+ * Control the RX mode, ie. promisucous, allmulti, etc...
+ * All commands require an "out" sg entry containing a 1 byte
+ * state value, zero = disable, non-zero = enable. Commands
+ * 0 and 1 are supported with the VIRTIO_NET_F_CTRL_RX feature.
+ * Commands 2-5 are added with VIRTIO_NET_F_CTRL_RX_EXTRA.
+ */
+#define VIRTIO_NET_CTRL_RX 0
+ #define VIRTIO_NET_CTRL_RX_PROMISC 0
+ #define VIRTIO_NET_CTRL_RX_ALLMULTI 1
+ #define VIRTIO_NET_CTRL_RX_ALLUNI 2
+ #define VIRTIO_NET_CTRL_RX_NOMULTI 3
+ #define VIRTIO_NET_CTRL_RX_NOUNI 4
+ #define VIRTIO_NET_CTRL_RX_NOBCAST 5
+
+/*
+ * Control the MAC
+ *
+ * The MAC filter table is managed by the hypervisor, the guest should
+ * assume the size is infinite. Filtering should be considered
+ * non-perfect, ie. based on hypervisor resources, the guest may
+ * received packets from sources not specified in the filter list.
+ *
+ * In addition to the class/cmd header, the TABLE_SET command requires
+ * two out scatterlists. Each contains a 4 byte count of entries followed
+ * by a concatenated byte stream of the ETH_ALEN MAC addresses. The
+ * first sg list contains unicast addresses, the second is for multicast.
+ * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature
+ * is available.
+ *
+ * The ADDR_SET command requests one out scatterlist, it contains a
+ * 6 bytes MAC address. This functionality is present if the
+ * VIRTIO_NET_F_CTRL_MAC_ADDR feature is available.
+ */
+struct virtio_net_ctrl_mac {
+ uint32_t entries;
+ uint8_t macs[][ETH_ALEN];
+};
+
+typedef struct VirtIONetQueue {
+ VirtQueue *rx_vq;
+ VirtQueue *tx_vq;
+ QEMUTimer *tx_timer;
+ QEMUBH *tx_bh;
+ int tx_waiting;
+ struct {
+ VirtQueueElement elem;
+ ssize_t len;
+ } async_tx;
+ struct VirtIONet *n;
+} VirtIONetQueue;
+
+typedef struct VirtIONet {
+ VirtIODevice vdev;
+ uint8_t mac[ETH_ALEN];
+ uint16_t status;
+ VirtIONetQueue *vqs;
+ VirtQueue *ctrl_vq;
+ NICState *nic;
+ uint32_t tx_timeout;
+ int32_t tx_burst;
+ uint32_t has_vnet_hdr;
+ size_t host_hdr_len;
+ size_t guest_hdr_len;
+ uint8_t has_ufo;
+ int mergeable_rx_bufs;
+ uint8_t promisc;
+ uint8_t allmulti;
+ uint8_t alluni;
+ uint8_t nomulti;
+ uint8_t nouni;
+ uint8_t nobcast;
+ uint8_t vhost_started;
+ struct {
+ int in_use;
+ int first_multi;
+ uint8_t multi_overflow;
+ uint8_t uni_overflow;
+ uint8_t *macs;
+ } mac_table;
+ uint32_t *vlans;
+ DeviceState *qdev;
+ int multiqueue;
+ uint16_t max_queues;
+ uint16_t curr_queues;
+ size_t config_size;
+} VirtIONet;
+
+#define VIRTIO_NET_CTRL_MAC 1
+ #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0
+ #define VIRTIO_NET_CTRL_MAC_ADDR_SET 1
+
+/*
+ * Control VLAN filtering
+ *
+ * The VLAN filter table is controlled via a simple ADD/DEL interface.
+ * VLAN IDs not added may be filterd by the hypervisor. Del is the
+ * opposite of add. Both commands expect an out entry containing a 2
+ * byte VLAN ID. VLAN filterting is available with the
+ * VIRTIO_NET_F_CTRL_VLAN feature bit.
+ */
+#define VIRTIO_NET_CTRL_VLAN 2
+ #define VIRTIO_NET_CTRL_VLAN_ADD 0
+ #define VIRTIO_NET_CTRL_VLAN_DEL 1
+
+/*
+ * Control Multiqueue
+ *
+ * The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET
+ * enables multiqueue, specifying the number of the transmit and
+ * receive queues that will be used. After the command is consumed and acked by
+ * the device, the device will not steer new packets on receive virtqueues
+ * other than specified nor read from transmit virtqueues other than specified.
+ * Accordingly, driver should not transmit new packets on virtqueues other than
+ * specified.
+ */
+struct virtio_net_ctrl_mq {
+ uint16_t virtqueue_pairs;
+};
+
+#define VIRTIO_NET_CTRL_MQ 4
+ #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0
+ #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
+ #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
+
+#define DEFINE_VIRTIO_NET_FEATURES(_state, _field) \
+ DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \
+ 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("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("mq", _state, _field, VIRTIO_NET_F_MQ, false)
+
+#endif
diff --git a/include/hw/virtio/virtio-rng.h b/include/hw/virtio/virtio-rng.h
new file mode 100644
index 0000000000..3711c97a70
--- /dev/null
+++ b/include/hw/virtio/virtio-rng.h
@@ -0,0 +1,47 @@
+/*
+ * Virtio RNG Support
+ *
+ * Copyright Red Hat, Inc. 2012
+ * Copyright Amit Shah <amit.shah@redhat.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 _QEMU_VIRTIO_RNG_H
+#define _QEMU_VIRTIO_RNG_H
+
+#include "qemu/rng.h"
+#include "qemu/rng-random.h"
+
+/* The Virtio ID for the virtio rng device */
+#define VIRTIO_ID_RNG 4
+
+struct VirtIORNGConf {
+ RngBackend *rng;
+ uint64_t max_bytes;
+ uint32_t period_ms;
+ RndRandom *default_backend;
+};
+
+typedef struct VirtIORNG {
+ VirtIODevice vdev;
+
+ DeviceState *qdev;
+
+ /* Only one vq - guest puts buffer(s) on it when it needs entropy */
+ VirtQueue *vq;
+
+ VirtIORNGConf *conf;
+
+ RngBackend *rng;
+
+ /* We purposefully don't migrate this state. The quota will reset on the
+ * destination as a result. Rate limiting is host state, not guest state.
+ */
+ QEMUTimer *rate_limit_timer;
+ int64_t quota_remaining;
+} VirtIORNG;
+
+#endif
diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
new file mode 100644
index 0000000000..c9d92ca2e8
--- /dev/null
+++ b/include/hw/virtio/virtio-scsi.h
@@ -0,0 +1,66 @@
+/*
+ * Virtio SCSI HBA
+ *
+ * Copyright IBM, Corp. 2010
+ *
+ * Authors:
+ * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef _QEMU_VIRTIO_SCSI_H
+#define _QEMU_VIRTIO_SCSI_H
+
+#include "hw/virtio/virtio.h"
+#include "hw/pci/pci.h"
+#include "hw/scsi/scsi.h"
+
+#define TYPE_VIRTIO_SCSI "virtio-scsi"
+#define VIRTIO_SCSI(obj) \
+ OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI)
+
+
+/* The ID for virtio_scsi */
+#define VIRTIO_ID_SCSI 8
+
+/* Feature Bits */
+#define VIRTIO_SCSI_F_INOUT 0
+#define VIRTIO_SCSI_F_HOTPLUG 1
+#define VIRTIO_SCSI_F_CHANGE 2
+
+struct VirtIOSCSIConf {
+ uint32_t num_queues;
+ uint32_t max_sectors;
+ uint32_t cmd_per_lun;
+};
+
+typedef struct VirtIOSCSI {
+ VirtIODevice parent_obj;
+ VirtIOSCSIConf conf;
+
+ SCSIBus bus;
+ uint32_t sense_size;
+ uint32_t cdb_size;
+ int resetting;
+ bool events_dropped;
+ VirtQueue *ctrl_vq;
+ VirtQueue *event_vq;
+ VirtQueue **cmd_vqs;
+} VirtIOSCSI;
+
+#define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _conf_field) \
+ DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \
+ DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF),\
+ DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128)
+
+#define DEFINE_VIRTIO_SCSI_FEATURES(_state, _feature_field) \
+ DEFINE_VIRTIO_COMMON_FEATURES(_state, _feature_field), \
+ DEFINE_PROP_BIT("hotplug", _state, _feature_field, VIRTIO_SCSI_F_HOTPLUG, \
+ true), \
+ DEFINE_PROP_BIT("param_change", _state, _feature_field, \
+ VIRTIO_SCSI_F_CHANGE, true)
+
+#endif /* _QEMU_VIRTIO_SCSI_H */
diff --git a/include/hw/virtio/virtio-serial.h b/include/hw/virtio/virtio-serial.h
new file mode 100644
index 0000000000..098deeac4a
--- /dev/null
+++ b/include/hw/virtio/virtio-serial.h
@@ -0,0 +1,247 @@
+/*
+ * Virtio Serial / Console Support
+ *
+ * Copyright IBM, Corp. 2008
+ * Copyright Red Hat, Inc. 2009, 2010
+ *
+ * Authors:
+ * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
+ * Amit Shah <amit.shah@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+#ifndef _QEMU_VIRTIO_SERIAL_H
+#define _QEMU_VIRTIO_SERIAL_H
+
+#include "hw/qdev.h"
+#include "hw/virtio/virtio.h"
+
+/* == Interface shared between the guest kernel and qemu == */
+
+/* The Virtio ID for virtio console / serial ports */
+#define VIRTIO_ID_CONSOLE 3
+
+/* Features supported */
+#define VIRTIO_CONSOLE_F_MULTIPORT 1
+
+#define VIRTIO_CONSOLE_BAD_ID (~(uint32_t)0)
+
+struct virtio_console_config {
+ /*
+ * These two fields are used by VIRTIO_CONSOLE_F_SIZE which
+ * isn't implemented here yet
+ */
+ uint16_t cols;
+ uint16_t rows;
+
+ uint32_t max_nr_ports;
+} QEMU_PACKED;
+
+struct virtio_console_control {
+ uint32_t id; /* Port number */
+ uint16_t event; /* The kind of control event (see below) */
+ uint16_t value; /* Extra information for the key */
+};
+
+struct virtio_serial_conf {
+ /* Max. number of ports we can have for a virtio-serial device */
+ uint32_t max_virtserial_ports;
+};
+
+/* Some events for the internal messages (control packets) */
+#define VIRTIO_CONSOLE_DEVICE_READY 0
+#define VIRTIO_CONSOLE_PORT_ADD 1
+#define VIRTIO_CONSOLE_PORT_REMOVE 2
+#define VIRTIO_CONSOLE_PORT_READY 3
+#define VIRTIO_CONSOLE_CONSOLE_PORT 4
+#define VIRTIO_CONSOLE_RESIZE 5
+#define VIRTIO_CONSOLE_PORT_OPEN 6
+#define VIRTIO_CONSOLE_PORT_NAME 7
+
+/* == In-qemu interface == */
+
+#define TYPE_VIRTIO_SERIAL_PORT "virtio-serial-port"
+#define VIRTIO_SERIAL_PORT(obj) \
+ OBJECT_CHECK(VirtIOSerialPort, (obj), TYPE_VIRTIO_SERIAL_PORT)
+#define VIRTIO_SERIAL_PORT_CLASS(klass) \
+ OBJECT_CLASS_CHECK(VirtIOSerialPortClass, (klass), TYPE_VIRTIO_SERIAL_PORT)
+#define VIRTIO_SERIAL_PORT_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(VirtIOSerialPortClass, (obj), TYPE_VIRTIO_SERIAL_PORT)
+
+typedef struct VirtIOSerial VirtIOSerial;
+typedef struct VirtIOSerialBus VirtIOSerialBus;
+typedef struct VirtIOSerialPort VirtIOSerialPort;
+
+typedef struct VirtIOSerialPortClass {
+ DeviceClass parent_class;
+
+ /* Is this a device that binds with hvc in the guest? */
+ bool is_console;
+
+ /*
+ * The per-port (or per-app) init function that's called when a
+ * new device is found on the bus.
+ */
+ int (*init)(VirtIOSerialPort *port);
+ /*
+ * Per-port exit function that's called when a port gets
+ * hot-unplugged or removed.
+ */
+ int (*exit)(VirtIOSerialPort *port);
+
+ /* Callbacks for guest events */
+ /* Guest opened/closed device. */
+ void (*set_guest_connected)(VirtIOSerialPort *port, int guest_connected);
+
+ /* Guest is now ready to accept data (virtqueues set up). */
+ void (*guest_ready)(VirtIOSerialPort *port);
+
+ /*
+ * Guest wrote some data to the port. This data is handed over to
+ * the app via this callback. The app can return a size less than
+ * 'len'. In this case, throttling will be enabled for this port.
+ */
+ ssize_t (*have_data)(VirtIOSerialPort *port, const uint8_t *buf,
+ size_t len);
+} VirtIOSerialPortClass;
+
+/*
+ * This is the state that's shared between all the ports. Some of the
+ * state is configurable via command-line options. Some of it can be
+ * set by individual devices in their initfn routines. Some of the
+ * state is set by the generic qdev device init routine.
+ */
+struct VirtIOSerialPort {
+ DeviceState dev;
+
+ QTAILQ_ENTRY(VirtIOSerialPort) next;
+
+ /*
+ * This field gives us the virtio device as well as the qdev bus
+ * that we are associated with
+ */
+ VirtIOSerial *vser;
+
+ VirtQueue *ivq, *ovq;
+
+ /*
+ * This name is sent to the guest and exported via sysfs.
+ * The guest could create symlinks based on this information.
+ * The name is in the reverse fqdn format, like org.qemu.console.0
+ */
+ char *name;
+
+ /*
+ * This id helps identify ports between the guest and the host.
+ * The guest sends a "header" with this id with each data packet
+ * that it sends and the host can then find out which associated
+ * device to send out this data to
+ */
+ uint32_t id;
+
+ /*
+ * This is the elem that we pop from the virtqueue. A slow
+ * backend that consumes guest data (e.g. the file backend for
+ * qemu chardevs) can cause the guest to block till all the output
+ * is flushed. This isn't desired, so we keep a note of the last
+ * element popped and continue consuming it once the backend
+ * becomes writable again.
+ */
+ VirtQueueElement elem;
+
+ /*
+ * The index and the offset into the iov buffer that was popped in
+ * elem above.
+ */
+ uint32_t iov_idx;
+ uint64_t iov_offset;
+
+ /*
+ * When unthrottling we use a bottom-half to call flush_queued_data.
+ */
+ QEMUBH *bh;
+
+ /* Is the corresponding guest device open? */
+ bool guest_connected;
+ /* Is this device open for IO on the host? */
+ bool host_connected;
+ /* Do apps not want to receive data? */
+ bool throttled;
+};
+
+/* The virtio-serial bus on top of which the ports will ride as devices */
+struct VirtIOSerialBus {
+ BusState qbus;
+
+ /* This is the parent device that provides the bus for ports. */
+ VirtIOSerial *vser;
+
+ /* The maximum number of ports that can ride on top of this bus */
+ uint32_t max_nr_ports;
+};
+
+typedef struct VirtIOSerialPostLoad {
+ QEMUTimer *timer;
+ uint32_t nr_active_ports;
+ struct {
+ VirtIOSerialPort *port;
+ uint8_t host_connected;
+ } *connected;
+} VirtIOSerialPostLoad;
+
+struct VirtIOSerial {
+ VirtIODevice vdev;
+
+ VirtQueue *c_ivq, *c_ovq;
+ /* Arrays of ivqs and ovqs: one per port */
+ VirtQueue **ivqs, **ovqs;
+
+ VirtIOSerialBus bus;
+
+ DeviceState *qdev;
+
+ QTAILQ_HEAD(, VirtIOSerialPort) ports;
+
+ /* bitmap for identifying active ports */
+ uint32_t *ports_map;
+
+ struct virtio_console_config config;
+
+ struct VirtIOSerialPostLoad *post_load;
+};
+
+/* Interface to the virtio-serial bus */
+
+/*
+ * Open a connection to the port
+ * Returns 0 on success (always).
+ */
+int virtio_serial_open(VirtIOSerialPort *port);
+
+/*
+ * Close the connection to the port
+ * Returns 0 on success (always).
+ */
+int virtio_serial_close(VirtIOSerialPort *port);
+
+/*
+ * Send data to Guest
+ */
+ssize_t virtio_serial_write(VirtIOSerialPort *port, const uint8_t *buf,
+ size_t size);
+
+/*
+ * Query whether a guest is ready to receive data.
+ */
+size_t virtio_serial_guest_ready(VirtIOSerialPort *port);
+
+/*
+ * Flow control: Ports can signal to the virtio-serial core to stop
+ * sending data or re-start sending data, depending on the 'throttle'
+ * value here.
+ */
+void virtio_serial_throttle_port(VirtIOSerialPort *port, bool throttle);
+
+#endif
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
new file mode 100644
index 0000000000..7e24b2b69a
--- /dev/null
+++ b/include/hw/virtio/virtio.h
@@ -0,0 +1,292 @@
+/*
+ * Virtio Support
+ *
+ * Copyright IBM, Corp. 2007
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef _QEMU_VIRTIO_H
+#define _QEMU_VIRTIO_H
+
+#include "hw/hw.h"
+#include "net/net.h"
+#include "hw/qdev.h"
+#include "sysemu/sysemu.h"
+#include "qemu/event_notifier.h"
+#ifdef CONFIG_VIRTFS
+#include "hw/virtio/virtio-9p.h"
+#endif
+
+/* from Linux's linux/virtio_config.h */
+
+/* Status byte for guest to report progress, and synchronize features. */
+/* We have seen device and processed generic fields (VIRTIO_CONFIG_F_VIRTIO) */
+#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1
+/* We have found a driver for the device. */
+#define VIRTIO_CONFIG_S_DRIVER 2
+/* Driver has used its parts of the config, and is happy */
+#define VIRTIO_CONFIG_S_DRIVER_OK 4
+/* We've given up on this device. */
+#define VIRTIO_CONFIG_S_FAILED 0x80
+
+/* Some virtio feature bits (currently bits 28 through 31) are reserved for the
+ * transport being used (eg. virtio_ring), the rest are per-device feature bits. */
+#define VIRTIO_TRANSPORT_F_START 28
+#define VIRTIO_TRANSPORT_F_END 32
+
+/* We notify when the ring is completely used, even if the guest is suppressing
+ * callbacks */
+#define VIRTIO_F_NOTIFY_ON_EMPTY 24
+/* We support indirect buffer descriptors */
+#define VIRTIO_RING_F_INDIRECT_DESC 28
+/* The Guest publishes the used index for which it expects an interrupt
+ * at the end of the avail ring. Host should ignore the avail->flags field. */
+/* The Host publishes the avail index for which it expects a kick
+ * at the end of the used ring. Guest should ignore the used->flags field. */
+#define VIRTIO_RING_F_EVENT_IDX 29
+/* A guest should never accept this. It implies negotiation is broken. */
+#define VIRTIO_F_BAD_FEATURE 30
+
+/* from Linux's linux/virtio_ring.h */
+
+/* This marks a buffer as continuing via the next field. */
+#define VRING_DESC_F_NEXT 1
+/* This marks a buffer as write-only (otherwise read-only). */
+#define VRING_DESC_F_WRITE 2
+/* This means the buffer contains a list of buffer descriptors. */
+#define VRING_DESC_F_INDIRECT 4
+
+/* This means don't notify other side when buffer added. */
+#define VRING_USED_F_NO_NOTIFY 1
+/* This means don't interrupt guest when buffer consumed. */
+#define VRING_AVAIL_F_NO_INTERRUPT 1
+
+struct VirtQueue;
+
+static inline hwaddr vring_align(hwaddr addr,
+ unsigned long align)
+{
+ return (addr + align - 1) & ~(align - 1);
+}
+
+typedef struct VirtQueue VirtQueue;
+
+#define VIRTQUEUE_MAX_SIZE 1024
+
+typedef struct VirtQueueElement
+{
+ unsigned int index;
+ unsigned int out_num;
+ unsigned int in_num;
+ hwaddr in_addr[VIRTQUEUE_MAX_SIZE];
+ hwaddr out_addr[VIRTQUEUE_MAX_SIZE];
+ struct iovec in_sg[VIRTQUEUE_MAX_SIZE];
+ struct iovec out_sg[VIRTQUEUE_MAX_SIZE];
+} VirtQueueElement;
+
+typedef struct {
+ void (*notify)(DeviceState *d, uint16_t vector);
+ void (*save_config)(DeviceState *d, QEMUFile *f);
+ void (*save_queue)(DeviceState *d, int n, QEMUFile *f);
+ 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);
+ bool (*query_guest_notifiers)(DeviceState *d);
+ int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assigned);
+ int (*set_host_notifier)(DeviceState *d, int n, bool assigned);
+ void (*vmstate_change)(DeviceState *d, bool running);
+} VirtIOBindings;
+
+#define VIRTIO_PCI_QUEUE_MAX 64
+
+#define VIRTIO_NO_VECTOR 0xffff
+
+#define TYPE_VIRTIO_DEVICE "virtio-device"
+#define VIRTIO_DEVICE_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(VirtioDeviceClass, obj, TYPE_VIRTIO_DEVICE)
+#define VIRTIO_DEVICE_CLASS(klass) \
+ OBJECT_CLASS_CHECK(VirtioDeviceClass, klass, TYPE_VIRTIO_DEVICE)
+#define VIRTIO_DEVICE(obj) \
+ OBJECT_CHECK(VirtIODevice, (obj), TYPE_VIRTIO_DEVICE)
+
+struct VirtIODevice
+{
+ DeviceState parent_obj;
+ const char *name;
+ uint8_t status;
+ uint8_t isr;
+ uint16_t queue_sel;
+ uint32_t guest_features;
+ size_t config_len;
+ void *config;
+ uint16_t config_vector;
+ int nvectors;
+ /*
+ * Function pointers will be removed at the end of the series as they are in
+ * VirtioDeviceClass.
+ */
+ uint32_t (*get_features)(VirtIODevice *vdev, uint32_t requested_features);
+ uint32_t (*bad_features)(VirtIODevice *vdev);
+ void (*set_features)(VirtIODevice *vdev, uint32_t val);
+ void (*get_config)(VirtIODevice *vdev, uint8_t *config);
+ void (*set_config)(VirtIODevice *vdev, const uint8_t *config);
+ void (*reset)(VirtIODevice *vdev);
+ void (*set_status)(VirtIODevice *vdev, uint8_t val);
+ /* Test and clear event pending status.
+ * Should be called after unmask to avoid losing events.
+ * If backend does not support masking,
+ * must check in frontend instead.
+ */
+ bool (*guest_notifier_pending)(VirtIODevice *vdev, int n);
+ /* Mask/unmask events from this vq. Any events reported
+ * while masked will become pending.
+ * If backend does not support masking,
+ * must mask in frontend instead.
+ */
+ void (*guest_notifier_mask)(VirtIODevice *vdev, int n, bool mask);
+
+ VirtQueue *vq;
+ const VirtIOBindings *binding;
+ DeviceState *binding_opaque;
+ uint16_t device_id;
+ bool vm_running;
+ VMChangeStateEntry *vmstate;
+};
+
+typedef struct VirtioDeviceClass {
+ /* This is what a VirtioDevice must implement */
+ DeviceClass parent;
+ int (*init)(VirtIODevice *vdev);
+ uint32_t (*get_features)(VirtIODevice *vdev, uint32_t requested_features);
+ uint32_t (*bad_features)(VirtIODevice *vdev);
+ void (*set_features)(VirtIODevice *vdev, uint32_t val);
+ void (*get_config)(VirtIODevice *vdev, uint8_t *config);
+ void (*set_config)(VirtIODevice *vdev, const uint8_t *config);
+ void (*reset)(VirtIODevice *vdev);
+ void (*set_status)(VirtIODevice *vdev, uint8_t val);
+} VirtioDeviceClass;
+
+void virtio_init(VirtIODevice *vdev, const char *name,
+ uint16_t device_id, size_t config_size);
+void virtio_common_cleanup(VirtIODevice *vdev);
+
+VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
+ void (*handle_output)(VirtIODevice *,
+ VirtQueue *));
+
+void virtio_del_queue(VirtIODevice *vdev, int n);
+
+void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem,
+ unsigned int len);
+void virtqueue_flush(VirtQueue *vq, unsigned int count);
+void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
+ unsigned int len, unsigned int idx);
+
+void virtqueue_map_sg(struct iovec *sg, hwaddr *addr,
+ size_t num_sg, int is_write);
+int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem);
+int virtqueue_avail_bytes(VirtQueue *vq, unsigned int in_bytes,
+ unsigned int out_bytes);
+void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
+ unsigned int *out_bytes,
+ unsigned max_in_bytes, unsigned max_out_bytes);
+
+void virtio_notify(VirtIODevice *vdev, VirtQueue *vq);
+
+void virtio_save(VirtIODevice *vdev, QEMUFile *f);
+
+int virtio_load(VirtIODevice *vdev, QEMUFile *f);
+
+void virtio_cleanup(VirtIODevice *vdev);
+
+void virtio_notify_config(VirtIODevice *vdev);
+
+void virtio_queue_set_notification(VirtQueue *vq, int enable);
+
+int virtio_queue_ready(VirtQueue *vq);
+
+int virtio_queue_empty(VirtQueue *vq);
+
+/* Host binding interface. */
+
+VirtIODevice *virtio_common_init(const char *name, uint16_t device_id,
+ size_t config_size, size_t struct_size);
+uint32_t virtio_config_readb(VirtIODevice *vdev, uint32_t addr);
+uint32_t virtio_config_readw(VirtIODevice *vdev, uint32_t addr);
+uint32_t virtio_config_readl(VirtIODevice *vdev, uint32_t addr);
+void virtio_config_writeb(VirtIODevice *vdev, uint32_t addr, uint32_t data);
+void virtio_config_writew(VirtIODevice *vdev, uint32_t addr, uint32_t data);
+void virtio_config_writel(VirtIODevice *vdev, uint32_t addr, uint32_t data);
+void virtio_queue_set_addr(VirtIODevice *vdev, int n, hwaddr addr);
+hwaddr virtio_queue_get_addr(VirtIODevice *vdev, int n);
+int virtio_queue_get_num(VirtIODevice *vdev, int n);
+void virtio_queue_notify(VirtIODevice *vdev, int n);
+uint16_t virtio_queue_vector(VirtIODevice *vdev, int n);
+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);
+
+void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
+ DeviceState *opaque);
+
+/* Base devices. */
+typedef struct VirtIOBlkConf VirtIOBlkConf;
+struct virtio_net_conf;
+VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf,
+ struct virtio_net_conf *net,
+ uint32_t host_features);
+typedef struct virtio_serial_conf virtio_serial_conf;
+VirtIODevice *virtio_serial_init(DeviceState *dev, virtio_serial_conf *serial);
+VirtIODevice *virtio_balloon_init(DeviceState *dev);
+typedef struct VirtIOSCSIConf VirtIOSCSIConf;
+VirtIODevice *virtio_scsi_init(DeviceState *dev, VirtIOSCSIConf *conf);
+typedef struct VirtIORNGConf VirtIORNGConf;
+VirtIODevice *virtio_rng_init(DeviceState *dev, VirtIORNGConf *conf);
+#ifdef CONFIG_VIRTFS
+VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf);
+#endif
+
+
+void virtio_net_exit(VirtIODevice *vdev);
+void virtio_serial_exit(VirtIODevice *vdev);
+void virtio_balloon_exit(VirtIODevice *vdev);
+void virtio_scsi_exit(VirtIODevice *vdev);
+void virtio_rng_exit(VirtIODevice *vdev);
+
+#define DEFINE_VIRTIO_COMMON_FEATURES(_state, _field) \
+ DEFINE_PROP_BIT("indirect_desc", _state, _field, \
+ VIRTIO_RING_F_INDIRECT_DESC, true), \
+ DEFINE_PROP_BIT("event_idx", _state, _field, \
+ VIRTIO_RING_F_EVENT_IDX, true)
+
+hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n);
+hwaddr virtio_queue_get_avail_addr(VirtIODevice *vdev, int n);
+hwaddr virtio_queue_get_used_addr(VirtIODevice *vdev, int n);
+hwaddr virtio_queue_get_ring_addr(VirtIODevice *vdev, int n);
+hwaddr virtio_queue_get_desc_size(VirtIODevice *vdev, int n);
+hwaddr virtio_queue_get_avail_size(VirtIODevice *vdev, int n);
+hwaddr virtio_queue_get_used_size(VirtIODevice *vdev, int n);
+hwaddr virtio_queue_get_ring_size(VirtIODevice *vdev, int n);
+uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
+void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
+VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
+uint16_t virtio_get_queue_index(VirtQueue *vq);
+int virtio_queue_get_id(VirtQueue *vq);
+EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
+void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
+ bool with_irqfd);
+EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq);
+void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign,
+ bool set_handler);
+void virtio_queue_notify_vq(VirtQueue *vq);
+void virtio_irq(VirtQueue *vq);
+#endif
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-14 08:03:13 +0000