root / hw / virtio-pci.c @ 9dbcca5a
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/*
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* Virtio PCI Bindings
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*
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* Copyright IBM, Corp. 2007
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* Copyright (c) 2009 CodeSourcery
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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* Paul Brook <paul@codesourcery.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#include <inttypes.h> |
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#include "virtio.h" |
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#include "virtio-blk.h" |
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#include "virtio-net.h" |
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#include "pci.h" |
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#include "qemu-error.h" |
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#include "msix.h" |
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#include "net.h" |
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#include "loader.h" |
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#include "kvm.h" |
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#include "blockdev.h" |
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/* from Linux's linux/virtio_pci.h */
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/* A 32-bit r/o bitmask of the features supported by the host */
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#define VIRTIO_PCI_HOST_FEATURES 0 |
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/* A 32-bit r/w bitmask of features activated by the guest */
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#define VIRTIO_PCI_GUEST_FEATURES 4 |
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/* A 32-bit r/w PFN for the currently selected queue */
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#define VIRTIO_PCI_QUEUE_PFN 8 |
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/* A 16-bit r/o queue size for the currently selected queue */
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#define VIRTIO_PCI_QUEUE_NUM 12 |
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/* A 16-bit r/w queue selector */
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#define VIRTIO_PCI_QUEUE_SEL 14 |
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/* A 16-bit r/w queue notifier */
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#define VIRTIO_PCI_QUEUE_NOTIFY 16 |
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/* An 8-bit device status register. */
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#define VIRTIO_PCI_STATUS 18 |
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/* An 8-bit r/o interrupt status register. Reading the value will return the
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* current contents of the ISR and will also clear it. This is effectively
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* a read-and-acknowledge. */
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#define VIRTIO_PCI_ISR 19 |
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/* MSI-X registers: only enabled if MSI-X is enabled. */
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/* A 16-bit vector for configuration changes. */
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#define VIRTIO_MSI_CONFIG_VECTOR 20 |
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/* A 16-bit vector for selected queue notifications. */
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#define VIRTIO_MSI_QUEUE_VECTOR 22 |
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/* Config space size */
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#define VIRTIO_PCI_CONFIG_NOMSI 20 |
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#define VIRTIO_PCI_CONFIG_MSI 24 |
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#define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \
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VIRTIO_PCI_CONFIG_MSI : \ |
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VIRTIO_PCI_CONFIG_NOMSI) |
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/* The remaining space is defined by each driver as the per-driver
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* configuration space */
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#define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \
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VIRTIO_PCI_CONFIG_MSI : \ |
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VIRTIO_PCI_CONFIG_NOMSI) |
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/* Virtio ABI version, if we increment this, we break the guest driver. */
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#define VIRTIO_PCI_ABI_VERSION 0 |
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/* How many bits to shift physical queue address written to QUEUE_PFN.
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* 12 is historical, and due to x86 page size. */
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#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 |
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/* We can catch some guest bugs inside here so we continue supporting older
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guests. */
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#define VIRTIO_PCI_BUG_BUS_MASTER (1 << 0) |
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/* QEMU doesn't strictly need write barriers since everything runs in
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* lock-step. We'll leave the calls to wmb() in though to make it obvious for
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* KVM or if kqemu gets SMP support.
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*/
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#define wmb() do { } while (0) |
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/* PCI bindings. */
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typedef struct { |
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PCIDevice pci_dev; |
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VirtIODevice *vdev; |
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uint32_t bugs; |
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uint32_t addr; |
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uint32_t class_code; |
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uint32_t nvectors; |
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BlockConf block; |
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NICConf nic; |
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uint32_t host_features; |
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#ifdef CONFIG_LINUX
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V9fsConf fsconf; |
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#endif
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/* Max. number of ports we can have for a the virtio-serial device */
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uint32_t max_virtserial_ports; |
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virtio_net_conf net; |
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} VirtIOPCIProxy; |
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/* virtio device */
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static void virtio_pci_notify(void *opaque, uint16_t vector) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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if (msix_enabled(&proxy->pci_dev))
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msix_notify(&proxy->pci_dev, vector); |
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else
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qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); |
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} |
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static void virtio_pci_save_config(void * opaque, QEMUFile *f) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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pci_device_save(&proxy->pci_dev, f); |
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msix_save(&proxy->pci_dev, f); |
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if (msix_present(&proxy->pci_dev))
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qemu_put_be16(f, proxy->vdev->config_vector); |
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} |
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static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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if (msix_present(&proxy->pci_dev))
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qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); |
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} |
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static int virtio_pci_load_config(void * opaque, QEMUFile *f) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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int ret;
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ret = pci_device_load(&proxy->pci_dev, f); |
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if (ret) {
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return ret;
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} |
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msix_load(&proxy->pci_dev, f); |
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if (msix_present(&proxy->pci_dev)) {
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qemu_get_be16s(f, &proxy->vdev->config_vector); |
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} else {
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proxy->vdev->config_vector = VIRTIO_NO_VECTOR; |
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} |
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if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
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return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
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} |
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/* Try to find out if the guest has bus master disabled, but is
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in ready state. Then we have a buggy guest OS. */
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if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
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!(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
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proxy->bugs |= VIRTIO_PCI_BUG_BUS_MASTER; |
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} |
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return 0; |
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} |
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static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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uint16_t vector; |
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if (msix_present(&proxy->pci_dev)) {
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qemu_get_be16s(f, &vector); |
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} else {
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vector = VIRTIO_NO_VECTOR; |
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} |
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virtio_queue_set_vector(proxy->vdev, n, vector); |
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if (vector != VIRTIO_NO_VECTOR) {
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return msix_vector_use(&proxy->pci_dev, vector);
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} |
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return 0; |
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} |
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static void virtio_pci_reset(DeviceState *d) |
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{ |
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VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev); |
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virtio_reset(proxy->vdev); |
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msix_reset(&proxy->pci_dev); |
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proxy->bugs = 0;
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} |
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static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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VirtIODevice *vdev = proxy->vdev; |
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target_phys_addr_t pa; |
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switch (addr) {
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case VIRTIO_PCI_GUEST_FEATURES:
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/* Guest does not negotiate properly? We have to assume nothing. */
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if (val & (1 << VIRTIO_F_BAD_FEATURE)) { |
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if (vdev->bad_features)
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val = proxy->host_features & vdev->bad_features(vdev); |
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else
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val = 0;
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} |
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if (vdev->set_features)
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vdev->set_features(vdev, val); |
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vdev->guest_features = val; |
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break;
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case VIRTIO_PCI_QUEUE_PFN:
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pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
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if (pa == 0) { |
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virtio_reset(proxy->vdev); |
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msix_unuse_all_vectors(&proxy->pci_dev); |
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} |
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else
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virtio_queue_set_addr(vdev, vdev->queue_sel, pa); |
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break;
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case VIRTIO_PCI_QUEUE_SEL:
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if (val < VIRTIO_PCI_QUEUE_MAX)
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vdev->queue_sel = val; |
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break;
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case VIRTIO_PCI_QUEUE_NOTIFY:
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virtio_queue_notify(vdev, val); |
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break;
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case VIRTIO_PCI_STATUS:
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virtio_set_status(vdev, val & 0xFF);
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if (vdev->status == 0) { |
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virtio_reset(proxy->vdev); |
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msix_unuse_all_vectors(&proxy->pci_dev); |
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} |
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/* Linux before 2.6.34 sets the device as OK without enabling
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the PCI device bus master bit. In this case we need to disable
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some safety checks. */
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if ((val & VIRTIO_CONFIG_S_DRIVER_OK) &&
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!(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
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proxy->bugs |= VIRTIO_PCI_BUG_BUS_MASTER; |
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} |
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break;
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case VIRTIO_MSI_CONFIG_VECTOR:
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msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); |
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/* Make it possible for guest to discover an error took place. */
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if (msix_vector_use(&proxy->pci_dev, val) < 0) |
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val = VIRTIO_NO_VECTOR; |
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vdev->config_vector = val; |
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break;
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case VIRTIO_MSI_QUEUE_VECTOR:
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msix_vector_unuse(&proxy->pci_dev, |
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virtio_queue_vector(vdev, vdev->queue_sel)); |
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/* Make it possible for guest to discover an error took place. */
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if (msix_vector_use(&proxy->pci_dev, val) < 0) |
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val = VIRTIO_NO_VECTOR; |
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virtio_queue_set_vector(vdev, vdev->queue_sel, val); |
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break;
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default:
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fprintf(stderr, "%s: unexpected address 0x%x value 0x%x\n",
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__func__, addr, val); |
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break;
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} |
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} |
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static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
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{ |
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VirtIODevice *vdev = proxy->vdev; |
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uint32_t ret = 0xFFFFFFFF;
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switch (addr) {
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case VIRTIO_PCI_HOST_FEATURES:
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ret = proxy->host_features; |
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break;
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case VIRTIO_PCI_GUEST_FEATURES:
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ret = vdev->guest_features; |
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break;
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case VIRTIO_PCI_QUEUE_PFN:
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ret = virtio_queue_get_addr(vdev, vdev->queue_sel) |
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>> VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
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break;
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case VIRTIO_PCI_QUEUE_NUM:
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ret = virtio_queue_get_num(vdev, vdev->queue_sel); |
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break;
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case VIRTIO_PCI_QUEUE_SEL:
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ret = vdev->queue_sel; |
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break;
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case VIRTIO_PCI_STATUS:
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ret = vdev->status; |
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break;
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case VIRTIO_PCI_ISR:
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/* reading from the ISR also clears it. */
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ret = vdev->isr; |
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vdev->isr = 0;
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qemu_set_irq(proxy->pci_dev.irq[0], 0); |
293 |
break;
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case VIRTIO_MSI_CONFIG_VECTOR:
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295 |
ret = vdev->config_vector; |
296 |
break;
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297 |
case VIRTIO_MSI_QUEUE_VECTOR:
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298 |
ret = virtio_queue_vector(vdev, vdev->queue_sel); |
299 |
break;
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default:
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break;
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} |
303 |
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return ret;
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} |
306 |
|
307 |
static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr) |
308 |
{ |
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VirtIOPCIProxy *proxy = opaque; |
310 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
311 |
addr -= proxy->addr; |
312 |
if (addr < config)
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313 |
return virtio_ioport_read(proxy, addr);
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314 |
addr -= config; |
315 |
return virtio_config_readb(proxy->vdev, addr);
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316 |
} |
317 |
|
318 |
static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr) |
319 |
{ |
320 |
VirtIOPCIProxy *proxy = opaque; |
321 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
322 |
addr -= proxy->addr; |
323 |
if (addr < config)
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324 |
return virtio_ioport_read(proxy, addr);
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325 |
addr -= config; |
326 |
return virtio_config_readw(proxy->vdev, addr);
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327 |
} |
328 |
|
329 |
static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr) |
330 |
{ |
331 |
VirtIOPCIProxy *proxy = opaque; |
332 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
333 |
addr -= proxy->addr; |
334 |
if (addr < config)
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335 |
return virtio_ioport_read(proxy, addr);
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336 |
addr -= config; |
337 |
return virtio_config_readl(proxy->vdev, addr);
|
338 |
} |
339 |
|
340 |
static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val) |
341 |
{ |
342 |
VirtIOPCIProxy *proxy = opaque; |
343 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
344 |
addr -= proxy->addr; |
345 |
if (addr < config) {
|
346 |
virtio_ioport_write(proxy, addr, val); |
347 |
return;
|
348 |
} |
349 |
addr -= config; |
350 |
virtio_config_writeb(proxy->vdev, addr, val); |
351 |
} |
352 |
|
353 |
static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val) |
354 |
{ |
355 |
VirtIOPCIProxy *proxy = opaque; |
356 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
357 |
addr -= proxy->addr; |
358 |
if (addr < config) {
|
359 |
virtio_ioport_write(proxy, addr, val); |
360 |
return;
|
361 |
} |
362 |
addr -= config; |
363 |
virtio_config_writew(proxy->vdev, addr, val); |
364 |
} |
365 |
|
366 |
static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val) |
367 |
{ |
368 |
VirtIOPCIProxy *proxy = opaque; |
369 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
370 |
addr -= proxy->addr; |
371 |
if (addr < config) {
|
372 |
virtio_ioport_write(proxy, addr, val); |
373 |
return;
|
374 |
} |
375 |
addr -= config; |
376 |
virtio_config_writel(proxy->vdev, addr, val); |
377 |
} |
378 |
|
379 |
static void virtio_map(PCIDevice *pci_dev, int region_num, |
380 |
pcibus_t addr, pcibus_t size, int type)
|
381 |
{ |
382 |
VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev); |
383 |
VirtIODevice *vdev = proxy->vdev; |
384 |
unsigned config_len = VIRTIO_PCI_REGION_SIZE(pci_dev) + vdev->config_len;
|
385 |
|
386 |
proxy->addr = addr; |
387 |
|
388 |
register_ioport_write(addr, config_len, 1, virtio_pci_config_writeb, proxy);
|
389 |
register_ioport_write(addr, config_len, 2, virtio_pci_config_writew, proxy);
|
390 |
register_ioport_write(addr, config_len, 4, virtio_pci_config_writel, proxy);
|
391 |
register_ioport_read(addr, config_len, 1, virtio_pci_config_readb, proxy);
|
392 |
register_ioport_read(addr, config_len, 2, virtio_pci_config_readw, proxy);
|
393 |
register_ioport_read(addr, config_len, 4, virtio_pci_config_readl, proxy);
|
394 |
|
395 |
if (vdev->config_len)
|
396 |
vdev->get_config(vdev, vdev->config); |
397 |
} |
398 |
|
399 |
static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, |
400 |
uint32_t val, int len)
|
401 |
{ |
402 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
403 |
|
404 |
if (PCI_COMMAND == address) {
|
405 |
if (!(val & PCI_COMMAND_MASTER)) {
|
406 |
if (!(proxy->bugs & VIRTIO_PCI_BUG_BUS_MASTER)) {
|
407 |
virtio_set_status(proxy->vdev, |
408 |
proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); |
409 |
} |
410 |
} |
411 |
} |
412 |
|
413 |
pci_default_write_config(pci_dev, address, val, len); |
414 |
msix_write_config(pci_dev, address, val, len); |
415 |
} |
416 |
|
417 |
static unsigned virtio_pci_get_features(void *opaque) |
418 |
{ |
419 |
VirtIOPCIProxy *proxy = opaque; |
420 |
return proxy->host_features;
|
421 |
} |
422 |
|
423 |
static void virtio_pci_guest_notifier_read(void *opaque) |
424 |
{ |
425 |
VirtQueue *vq = opaque; |
426 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
427 |
if (event_notifier_test_and_clear(n)) {
|
428 |
virtio_irq(vq); |
429 |
} |
430 |
} |
431 |
|
432 |
static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) |
433 |
{ |
434 |
VirtIOPCIProxy *proxy = opaque; |
435 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
436 |
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
437 |
|
438 |
if (assign) {
|
439 |
int r = event_notifier_init(notifier, 0); |
440 |
if (r < 0) { |
441 |
return r;
|
442 |
} |
443 |
qemu_set_fd_handler(event_notifier_get_fd(notifier), |
444 |
virtio_pci_guest_notifier_read, NULL, vq);
|
445 |
} else {
|
446 |
qemu_set_fd_handler(event_notifier_get_fd(notifier), |
447 |
NULL, NULL, NULL); |
448 |
event_notifier_cleanup(notifier); |
449 |
} |
450 |
|
451 |
return 0; |
452 |
} |
453 |
|
454 |
static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) |
455 |
{ |
456 |
VirtIOPCIProxy *proxy = opaque; |
457 |
VirtIODevice *vdev = proxy->vdev; |
458 |
int r, n;
|
459 |
|
460 |
for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
461 |
if (!virtio_queue_get_num(vdev, n)) {
|
462 |
break;
|
463 |
} |
464 |
|
465 |
r = virtio_pci_set_guest_notifier(opaque, n, assign); |
466 |
if (r < 0) { |
467 |
goto assign_error;
|
468 |
} |
469 |
} |
470 |
|
471 |
return 0; |
472 |
|
473 |
assign_error:
|
474 |
/* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
|
475 |
while (--n >= 0) { |
476 |
virtio_pci_set_guest_notifier(opaque, n, !assign); |
477 |
} |
478 |
return r;
|
479 |
} |
480 |
|
481 |
static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
482 |
{ |
483 |
VirtIOPCIProxy *proxy = opaque; |
484 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
485 |
EventNotifier *notifier = virtio_queue_get_host_notifier(vq); |
486 |
int r;
|
487 |
if (assign) {
|
488 |
r = event_notifier_init(notifier, 1);
|
489 |
if (r < 0) { |
490 |
return r;
|
491 |
} |
492 |
r = kvm_set_ioeventfd_pio_word(event_notifier_get_fd(notifier), |
493 |
proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY, |
494 |
n, assign); |
495 |
if (r < 0) { |
496 |
event_notifier_cleanup(notifier); |
497 |
} |
498 |
} else {
|
499 |
r = kvm_set_ioeventfd_pio_word(event_notifier_get_fd(notifier), |
500 |
proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY, |
501 |
n, assign); |
502 |
if (r < 0) { |
503 |
return r;
|
504 |
} |
505 |
event_notifier_cleanup(notifier); |
506 |
} |
507 |
return r;
|
508 |
} |
509 |
|
510 |
static const VirtIOBindings virtio_pci_bindings = { |
511 |
.notify = virtio_pci_notify, |
512 |
.save_config = virtio_pci_save_config, |
513 |
.load_config = virtio_pci_load_config, |
514 |
.save_queue = virtio_pci_save_queue, |
515 |
.load_queue = virtio_pci_load_queue, |
516 |
.get_features = virtio_pci_get_features, |
517 |
.set_host_notifier = virtio_pci_set_host_notifier, |
518 |
.set_guest_notifiers = virtio_pci_set_guest_notifiers, |
519 |
}; |
520 |
|
521 |
static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev, |
522 |
uint16_t vendor, uint16_t device, |
523 |
uint16_t class_code, uint8_t pif) |
524 |
{ |
525 |
uint8_t *config; |
526 |
uint32_t size; |
527 |
|
528 |
proxy->vdev = vdev; |
529 |
|
530 |
config = proxy->pci_dev.config; |
531 |
pci_config_set_vendor_id(config, vendor); |
532 |
pci_config_set_device_id(config, device); |
533 |
|
534 |
config[0x08] = VIRTIO_PCI_ABI_VERSION;
|
535 |
|
536 |
config[0x09] = pif;
|
537 |
pci_config_set_class(config, class_code); |
538 |
|
539 |
config[0x2c] = vendor & 0xFF; |
540 |
config[0x2d] = (vendor >> 8) & 0xFF; |
541 |
config[0x2e] = vdev->device_id & 0xFF; |
542 |
config[0x2f] = (vdev->device_id >> 8) & 0xFF; |
543 |
|
544 |
config[0x3d] = 1; |
545 |
|
546 |
if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, 1, 0)) { |
547 |
pci_register_bar(&proxy->pci_dev, 1,
|
548 |
msix_bar_size(&proxy->pci_dev), |
549 |
PCI_BASE_ADDRESS_SPACE_MEMORY, |
550 |
msix_mmio_map); |
551 |
} else
|
552 |
vdev->nvectors = 0;
|
553 |
|
554 |
proxy->pci_dev.config_write = virtio_write_config; |
555 |
|
556 |
size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
557 |
if (size & (size-1)) |
558 |
size = 1 << qemu_fls(size);
|
559 |
|
560 |
pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
|
561 |
virtio_map); |
562 |
|
563 |
virtio_bind_device(vdev, &virtio_pci_bindings, proxy); |
564 |
proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
565 |
proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
566 |
proxy->host_features = vdev->get_features(vdev, proxy->host_features); |
567 |
} |
568 |
|
569 |
static int virtio_blk_init_pci(PCIDevice *pci_dev) |
570 |
{ |
571 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
572 |
VirtIODevice *vdev; |
573 |
|
574 |
if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
|
575 |
proxy->class_code != PCI_CLASS_STORAGE_OTHER) |
576 |
proxy->class_code = PCI_CLASS_STORAGE_SCSI; |
577 |
|
578 |
vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block); |
579 |
if (!vdev) {
|
580 |
return -1; |
581 |
} |
582 |
vdev->nvectors = proxy->nvectors; |
583 |
virtio_init_pci(proxy, vdev, |
584 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
585 |
PCI_DEVICE_ID_VIRTIO_BLOCK, |
586 |
proxy->class_code, 0x00);
|
587 |
/* make the actual value visible */
|
588 |
proxy->nvectors = vdev->nvectors; |
589 |
return 0; |
590 |
} |
591 |
|
592 |
static int virtio_exit_pci(PCIDevice *pci_dev) |
593 |
{ |
594 |
return msix_uninit(pci_dev);
|
595 |
} |
596 |
|
597 |
static int virtio_blk_exit_pci(PCIDevice *pci_dev) |
598 |
{ |
599 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
600 |
|
601 |
virtio_blk_exit(proxy->vdev); |
602 |
blockdev_mark_auto_del(proxy->block.bs); |
603 |
return virtio_exit_pci(pci_dev);
|
604 |
} |
605 |
|
606 |
static int virtio_serial_init_pci(PCIDevice *pci_dev) |
607 |
{ |
608 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
609 |
VirtIODevice *vdev; |
610 |
|
611 |
if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
|
612 |
proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
|
613 |
proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */
|
614 |
proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; |
615 |
|
616 |
vdev = virtio_serial_init(&pci_dev->qdev, proxy->max_virtserial_ports); |
617 |
if (!vdev) {
|
618 |
return -1; |
619 |
} |
620 |
vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
621 |
? proxy->max_virtserial_ports + 1
|
622 |
: proxy->nvectors; |
623 |
virtio_init_pci(proxy, vdev, |
624 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
625 |
PCI_DEVICE_ID_VIRTIO_CONSOLE, |
626 |
proxy->class_code, 0x00);
|
627 |
proxy->nvectors = vdev->nvectors; |
628 |
return 0; |
629 |
} |
630 |
|
631 |
static int virtio_serial_exit_pci(PCIDevice *pci_dev) |
632 |
{ |
633 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
634 |
|
635 |
virtio_serial_exit(proxy->vdev); |
636 |
return virtio_exit_pci(pci_dev);
|
637 |
} |
638 |
|
639 |
static int virtio_net_init_pci(PCIDevice *pci_dev) |
640 |
{ |
641 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
642 |
VirtIODevice *vdev; |
643 |
|
644 |
vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); |
645 |
|
646 |
vdev->nvectors = proxy->nvectors; |
647 |
virtio_init_pci(proxy, vdev, |
648 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
649 |
PCI_DEVICE_ID_VIRTIO_NET, |
650 |
PCI_CLASS_NETWORK_ETHERNET, |
651 |
0x00);
|
652 |
|
653 |
/* make the actual value visible */
|
654 |
proxy->nvectors = vdev->nvectors; |
655 |
return 0; |
656 |
} |
657 |
|
658 |
static int virtio_net_exit_pci(PCIDevice *pci_dev) |
659 |
{ |
660 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
661 |
|
662 |
virtio_net_exit(proxy->vdev); |
663 |
return virtio_exit_pci(pci_dev);
|
664 |
} |
665 |
|
666 |
static int virtio_balloon_init_pci(PCIDevice *pci_dev) |
667 |
{ |
668 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
669 |
VirtIODevice *vdev; |
670 |
|
671 |
vdev = virtio_balloon_init(&pci_dev->qdev); |
672 |
virtio_init_pci(proxy, vdev, |
673 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
674 |
PCI_DEVICE_ID_VIRTIO_BALLOON, |
675 |
PCI_CLASS_MEMORY_RAM, |
676 |
0x00);
|
677 |
return 0; |
678 |
} |
679 |
|
680 |
#ifdef CONFIG_VIRTFS
|
681 |
static int virtio_9p_init_pci(PCIDevice *pci_dev) |
682 |
{ |
683 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
684 |
VirtIODevice *vdev; |
685 |
|
686 |
vdev = virtio_9p_init(&pci_dev->qdev, &proxy->fsconf); |
687 |
vdev->nvectors = proxy->nvectors; |
688 |
virtio_init_pci(proxy, vdev, |
689 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
690 |
0x1009,
|
691 |
0x2,
|
692 |
0x00);
|
693 |
/* make the actual value visible */
|
694 |
proxy->nvectors = vdev->nvectors; |
695 |
return 0; |
696 |
} |
697 |
#endif
|
698 |
|
699 |
static PCIDeviceInfo virtio_info[] = {
|
700 |
{ |
701 |
.qdev.name = "virtio-blk-pci",
|
702 |
.qdev.size = sizeof(VirtIOPCIProxy),
|
703 |
.init = virtio_blk_init_pci, |
704 |
.exit = virtio_blk_exit_pci, |
705 |
.qdev.props = (Property[]) { |
706 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
707 |
DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, block), |
708 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
709 |
DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), |
710 |
DEFINE_PROP_END_OF_LIST(), |
711 |
}, |
712 |
.qdev.reset = virtio_pci_reset, |
713 |
},{ |
714 |
.qdev.name = "virtio-net-pci",
|
715 |
.qdev.size = sizeof(VirtIOPCIProxy),
|
716 |
.init = virtio_net_init_pci, |
717 |
.exit = virtio_net_exit_pci, |
718 |
.romfile = "pxe-virtio.bin",
|
719 |
.qdev.props = (Property[]) { |
720 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), |
721 |
DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), |
722 |
DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), |
723 |
DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy,
|
724 |
net.txtimer, TX_TIMER_INTERVAL), |
725 |
DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy,
|
726 |
net.txburst, TX_BURST), |
727 |
DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx),
|
728 |
DEFINE_PROP_END_OF_LIST(), |
729 |
}, |
730 |
.qdev.reset = virtio_pci_reset, |
731 |
},{ |
732 |
.qdev.name = "virtio-serial-pci",
|
733 |
.qdev.alias = "virtio-serial",
|
734 |
.qdev.size = sizeof(VirtIOPCIProxy),
|
735 |
.init = virtio_serial_init_pci, |
736 |
.exit = virtio_serial_exit_pci, |
737 |
.qdev.props = (Property[]) { |
738 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
|
739 |
DEV_NVECTORS_UNSPECIFIED), |
740 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
741 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
742 |
DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, max_virtserial_ports,
|
743 |
31),
|
744 |
DEFINE_PROP_END_OF_LIST(), |
745 |
}, |
746 |
.qdev.reset = virtio_pci_reset, |
747 |
},{ |
748 |
.qdev.name = "virtio-balloon-pci",
|
749 |
.qdev.size = sizeof(VirtIOPCIProxy),
|
750 |
.init = virtio_balloon_init_pci, |
751 |
.exit = virtio_exit_pci, |
752 |
.qdev.props = (Property[]) { |
753 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
754 |
DEFINE_PROP_END_OF_LIST(), |
755 |
}, |
756 |
.qdev.reset = virtio_pci_reset, |
757 |
},{ |
758 |
#ifdef CONFIG_VIRTFS
|
759 |
.qdev.name = "virtio-9p-pci",
|
760 |
.qdev.size = sizeof(VirtIOPCIProxy),
|
761 |
.init = virtio_9p_init_pci, |
762 |
.qdev.props = (Property[]) { |
763 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
764 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
765 |
DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag),
|
766 |
DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id),
|
767 |
DEFINE_PROP_END_OF_LIST(), |
768 |
}, |
769 |
}, { |
770 |
#endif
|
771 |
/* end of list */
|
772 |
} |
773 |
}; |
774 |
|
775 |
static void virtio_pci_register_devices(void) |
776 |
{ |
777 |
pci_qdev_register_many(virtio_info); |
778 |
} |
779 |
|
780 |
device_init(virtio_pci_register_devices) |