133 lines
4.7 KiB
C
133 lines
4.7 KiB
C
/****************************************************************************
|
|
* drivers/virtio/virtio-pci.h
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __DRIVERS_VIRTIO_VIRTIO_PCI_H
|
|
#define __DRIVERS_VIRTIO_VIRTIO_PCI_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#ifdef CONFIG_DRIVERS_VIRTIO_PCI
|
|
|
|
#include <nuttx/pci/pci.h>
|
|
#include <nuttx/virtio/virtio.h>
|
|
#include <nuttx/wdog.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#define VIRTIO_PCI_VRING_ALIGN (1 << 12)
|
|
|
|
#define VIRTIO_PCI_MSI_NO_VECTOR 0xffff
|
|
|
|
#define VIRTIO_PCI_INT_CFG 0
|
|
#define VIRTIO_PCI_INT_VQ 1
|
|
#define VIRTIO_PCI_INT_NUM 2
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
#ifdef __cplusplus
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
struct virtio_pci_device_s;
|
|
struct virtio_pci_ops_s
|
|
{
|
|
CODE uint16_t (*get_queue_len)(FAR struct virtio_pci_device_s *vpdev,
|
|
int idx);
|
|
CODE int (*config_vector)(FAR struct virtio_pci_device_s *vpdev,
|
|
bool enable);
|
|
CODE int (*create_virtqueue)(FAR struct virtio_pci_device_s *vpdev,
|
|
FAR struct virtqueue *vq);
|
|
CODE void (*delete_virtqueue)(FAR struct virtio_device *vdev, int index);
|
|
};
|
|
|
|
struct virtio_pci_device_s
|
|
{
|
|
struct virtio_device vdev; /* Virtio deivce */
|
|
FAR struct pci_device_s *dev; /* PCI device */
|
|
FAR const struct virtio_pci_ops_s *ops;
|
|
metal_phys_addr_t shm_phy;
|
|
struct metal_io_region shm_io; /* Share memory io region,
|
|
* virtqueue use this io.
|
|
*/
|
|
#if CONFIG_DRIVERS_VIRTIO_PCI_POLLING_PERIOD <= 0
|
|
int irq[VIRTIO_PCI_INT_NUM];
|
|
#else
|
|
struct wdog_s wdog;
|
|
#endif
|
|
|
|
/* for modern */
|
|
|
|
FAR void *common;
|
|
size_t common_len;
|
|
FAR void *notify;
|
|
size_t notify_len;
|
|
uint32_t notify_off_multiplier;
|
|
FAR void *device;
|
|
size_t device_len;
|
|
|
|
/* for legacy */
|
|
|
|
FAR void *ioaddr;
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
void virtio_pci_reset_device(FAR struct virtio_device *vdev);
|
|
uint64_t
|
|
virtio_pci_negotiate_features(FAR struct virtio_device *vdev,
|
|
uint64_t features);
|
|
int virtio_pci_create_virtqueues(FAR struct virtio_device *vdev,
|
|
unsigned int flags,
|
|
unsigned int nvqs,
|
|
FAR const char *names[],
|
|
vq_callback callbacks[],
|
|
FAR void *callback_args[]);
|
|
void virtio_pci_delete_virtqueues(FAR struct virtio_device *vdev);
|
|
|
|
int virtio_pci_modern_probe(FAR struct pci_device_s *dev);
|
|
int virtio_pci_legacy_probe(FAR struct pci_device_s *dev);
|
|
|
|
#undef EXTERN
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* CONFIG_DRIVERS_VIRTIO_PCI */
|
|
|
|
#endif /* __DRIVERS_VIRTIO_VIRTIO_PCI_H */
|