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hw/virtio: add vhost-user-i2c-pci boilerplate

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This allows is to instantiate a vhost-user-i2c device as part of a PCI
bus. It is mostly boilerplate which looks pretty similar to the
vhost-user-fs-pci device.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Message-Id: <8a083eaa57d93feaab12acd1f94b225879212f20.1625806763.git.viresh.kumar@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Viresh Kumar 2021-07-09 10:30:17 +05:30 committed by Michael S. Tsirkin
parent 7221d3b634
commit 538bb6f121
2 changed files with 70 additions and 0 deletions
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1
hw/virtio/meson.build
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@ -26,6 +26,7 @@ virtio_ss.add(when: 'CONFIG_VIRTIO_RNG', if_true: files('virtio-rng.c'))
virtio_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu.c')) virtio_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu.c'))
virtio_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true: files('virtio-mem.c')) virtio_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true: files('virtio-mem.c'))
virtio_ss.add(when: 'CONFIG_VHOST_USER_I2C', if_true: files('vhost-user-i2c.c')) virtio_ss.add(when: 'CONFIG_VHOST_USER_I2C', if_true: files('vhost-user-i2c.c'))
virtio_ss.add(when: ['CONFIG_VIRTIO_PCI', 'CONFIG_VHOST_USER_I2C'], if_true: files('vhost-user-i2c-pci.c'))
virtio_pci_ss = ss.source_set() virtio_pci_ss = ss.source_set()
virtio_pci_ss.add(when: 'CONFIG_VHOST_VSOCK', if_true: files('vhost-vsock-pci.c')) virtio_pci_ss.add(when: 'CONFIG_VHOST_VSOCK', if_true: files('vhost-vsock-pci.c'))

69
hw/virtio/vhost-user-i2c-pci.c Normal file
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@ -0,0 +1,69 @@
/*
* Vhost-user i2c virtio device PCI glue
*
* Copyright (c) 2021 Viresh Kumar <viresh.kumar@linaro.org>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "hw/qdev-properties.h"
#include "hw/virtio/vhost-user-i2c.h"
#include "virtio-pci.h"
struct VHostUserI2CPCI {
VirtIOPCIProxy parent_obj;
VHostUserI2C vdev;
};
typedef struct VHostUserI2CPCI VHostUserI2CPCI;
#define TYPE_VHOST_USER_I2C_PCI "vhost-user-i2c-pci-base"
DECLARE_INSTANCE_CHECKER(VHostUserI2CPCI, VHOST_USER_I2C_PCI,
TYPE_VHOST_USER_I2C_PCI)
static void vhost_user_i2c_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VHostUserI2CPCI *dev = VHOST_USER_I2C_PCI(vpci_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
vpci_dev->nvectors = 1;
qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
}
static void vhost_user_i2c_pci_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
k->realize = vhost_user_i2c_pci_realize;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
pcidev_k->revision = 0x00;
pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
}
static void vhost_user_i2c_pci_instance_init(Object *obj)
{
VHostUserI2CPCI *dev = VHOST_USER_I2C_PCI(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_USER_I2C);
}
static const VirtioPCIDeviceTypeInfo vhost_user_i2c_pci_info = {
.base_name = TYPE_VHOST_USER_I2C_PCI,
.non_transitional_name = "vhost-user-i2c-pci",
.instance_size = sizeof(VHostUserI2CPCI),
.instance_init = vhost_user_i2c_pci_instance_init,
.class_init = vhost_user_i2c_pci_class_init,
};
static void vhost_user_i2c_pci_register(void)
{
virtio_pci_types_register(&vhost_user_i2c_pci_info);
}
type_init(vhost_user_i2c_pci_register);