linux/drivers/virtio/virtio_pci_legacy_dev.c

// SPDX-License-Identifier: GPL-2.0-or-later

#include "linux/virtio_pci.h"
#include <linux/virtio_pci_legacy.h>
#include <linux/module.h>
#include <linux/pci.h>


/*
 * vp_legacy_probe: probe the legacy virtio pci device, note that the
 * caller is required to enable PCI device before calling this function.
 * @ldev: the legacy virtio-pci device
 *
 * Return 0 on succeed otherwise fail
 */
int vp_legacy_probe(struct virtio_pci_legacy_device *ldev)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_probe: remove and cleanup the legacy virtio pci device
 * @ldev: the legacy virtio-pci device
 */
void vp_legacy_remove(struct virtio_pci_legacy_device *ldev)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_get_features - get features from device
 * @ldev: the legacy virtio-pci device
 *
 * Returns the features read from the device
 */
u64 vp_legacy_get_features(struct virtio_pci_legacy_device *ldev)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_get_driver_features - get driver features from device
 * @ldev: the legacy virtio-pci device
 *
 * Returns the driver features read from the device
 */
u64 vp_legacy_get_driver_features(struct virtio_pci_legacy_device *ldev)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_set_features - set features to device
 * @ldev: the legacy virtio-pci device
 * @features: the features set to device
 */
void vp_legacy_set_features(struct virtio_pci_legacy_device *ldev,
			    u32 features)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_get_status - get the device status
 * @ldev: the legacy virtio-pci device
 *
 * Returns the status read from device
 */
u8 vp_legacy_get_status(struct virtio_pci_legacy_device *ldev)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_set_status - set status to device
 * @ldev: the legacy virtio-pci device
 * @status: the status set to device
 */
void vp_legacy_set_status(struct virtio_pci_legacy_device *ldev,
				 u8 status)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_queue_vector - set the MSIX vector for a specific virtqueue
 * @ldev: the legacy virtio-pci device
 * @index: queue index
 * @vector: the config vector
 *
 * Returns the config vector read from the device
 */
u16 vp_legacy_queue_vector(struct virtio_pci_legacy_device *ldev,
			   u16 index, u16 vector)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_config_vector - set the vector for config interrupt
 * @ldev: the legacy virtio-pci device
 * @vector: the config vector
 *
 * Returns the config vector read from the device
 */
u16 vp_legacy_config_vector(struct virtio_pci_legacy_device *ldev,
			    u16 vector)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_set_queue_address - set the virtqueue address
 * @ldev: the legacy virtio-pci device
 * @index: the queue index
 * @queue_pfn: pfn of the virtqueue
 */
void vp_legacy_set_queue_address(struct virtio_pci_legacy_device *ldev,
			     u16 index, u32 queue_pfn)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_get_queue_enable - enable a virtqueue
 * @ldev: the legacy virtio-pci device
 * @index: the queue index
 *
 * Returns whether a virtqueue is enabled or not
 */
bool vp_legacy_get_queue_enable(struct virtio_pci_legacy_device *ldev,
				u16 index)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * vp_legacy_get_queue_size - get size for a virtqueue
 * @ldev: the legacy virtio-pci device
 * @index: the queue index
 *
 * Returns the size of the virtqueue
 */
u16 vp_legacy_get_queue_size(struct virtio_pci_legacy_device *ldev,
			     u16 index)
{ … }
EXPORT_SYMBOL_GPL(…);

MODULE_VERSION(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;