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

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

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <5f560cab92d0d789b1c94295ec74b9952907d69d.1641987128.git.viresh.kumar@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

Message-Id: <20220802095010.3330793-14-alex.bennee@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 2022-08-02 10:50:01 +01:00 committed by Michael S. Tsirkin
parent 27ba7b027f
commit 25c60a4612
3 changed files with 71 additions and 1 deletions
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2
MAINTAINERS
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@ -2102,7 +2102,7 @@ vhost-user-gpio
M: Alex Bennée <alex.bennee@linaro.org>
R: Viresh Kumar <viresh.kumar@linaro.org>
S: Maintained
F: hw/virtio/vhost-user-gpio.c
F: hw/virtio/vhost-user-gpio*
F: include/hw/virtio/vhost-user-gpio.h
virtio-crypto

1
hw/virtio/meson.build
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@ -30,6 +30,7 @@ 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_RNG', if_true: files('vhost-user-rng.c'))
virtio_ss.add(when: 'CONFIG_VHOST_USER_GPIO', if_true: files('vhost-user-gpio.c'))
virtio_ss.add(when: ['CONFIG_VIRTIO_PCI', 'CONFIG_VHOST_USER_GPIO'], if_true: files('vhost-user-gpio-pci.c'))
virtio_pci_ss = ss.source_set()
virtio_pci_ss.add(when: 'CONFIG_VHOST_VSOCK', if_true: files('vhost-vsock-pci.c'))

69
hw/virtio/vhost-user-gpio-pci.c Normal file
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@ -0,0 +1,69 @@
/*
* Vhost-user gpio virtio device PCI glue
*
* Copyright (c) 2022 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-gpio.h"
#include "hw/virtio/virtio-pci.h"
struct VHostUserGPIOPCI {
VirtIOPCIProxy parent_obj;
VHostUserGPIO vdev;
};
typedef struct VHostUserGPIOPCI VHostUserGPIOPCI;
#define TYPE_VHOST_USER_GPIO_PCI "vhost-user-gpio-pci-base"
DECLARE_INSTANCE_CHECKER(VHostUserGPIOPCI, VHOST_USER_GPIO_PCI,
TYPE_VHOST_USER_GPIO_PCI)
static void vhost_user_gpio_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VHostUserGPIOPCI *dev = VHOST_USER_GPIO_PCI(vpci_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
vpci_dev->nvectors = 1;
qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
}
static void vhost_user_gpio_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_gpio_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_gpio_pci_instance_init(Object *obj)
{
VHostUserGPIOPCI *dev = VHOST_USER_GPIO_PCI(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_USER_GPIO);
}
static const VirtioPCIDeviceTypeInfo vhost_user_gpio_pci_info = {
.base_name = TYPE_VHOST_USER_GPIO_PCI,
.non_transitional_name = "vhost-user-gpio-pci",
.instance_size = sizeof(VHostUserGPIOPCI),
.instance_init = vhost_user_gpio_pci_instance_init,
.class_init = vhost_user_gpio_pci_class_init,
};
static void vhost_user_gpio_pci_register(void)
{
virtio_pci_types_register(&vhost_user_gpio_pci_info);
}
type_init(vhost_user_gpio_pci_register);