mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 06:12:58 +00:00
eb41d8a1be
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
235 lines
5.3 KiB
C
235 lines
5.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
|
|
*
|
|
* VirtIO Sandbox transport driver, for testing purpose only
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <virtio_types.h>
|
|
#include <virtio.h>
|
|
#include <virtio_ring.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/compat.h>
|
|
#include <linux/err.h>
|
|
#include <linux/io.h>
|
|
|
|
struct virtio_sandbox_priv {
|
|
u8 id;
|
|
u8 status;
|
|
u64 device_features;
|
|
u64 driver_features;
|
|
ulong queue_desc;
|
|
ulong queue_available;
|
|
ulong queue_used;
|
|
};
|
|
|
|
static int virtio_sandbox_get_config(struct udevice *udev, unsigned int offset,
|
|
void *buf, unsigned int len)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_set_config(struct udevice *udev, unsigned int offset,
|
|
const void *buf, unsigned int len)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_get_status(struct udevice *udev, u8 *status)
|
|
{
|
|
struct virtio_sandbox_priv *priv = dev_get_priv(udev);
|
|
|
|
*status = priv->status;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_set_status(struct udevice *udev, u8 status)
|
|
{
|
|
struct virtio_sandbox_priv *priv = dev_get_priv(udev);
|
|
|
|
/* We should never be setting status to 0 */
|
|
WARN_ON(status == 0);
|
|
|
|
priv->status = status;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_reset(struct udevice *udev)
|
|
{
|
|
struct virtio_sandbox_priv *priv = dev_get_priv(udev);
|
|
|
|
/* 0 status means a reset */
|
|
priv->status = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_get_features(struct udevice *udev, u64 *features)
|
|
{
|
|
struct virtio_sandbox_priv *priv = dev_get_priv(udev);
|
|
|
|
*features = priv->device_features;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_set_features(struct udevice *udev)
|
|
{
|
|
struct virtio_sandbox_priv *priv = dev_get_priv(udev);
|
|
struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(udev);
|
|
|
|
priv->driver_features = uc_priv->features;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct virtqueue *virtio_sandbox_setup_vq(struct udevice *udev,
|
|
unsigned int index)
|
|
{
|
|
struct virtio_sandbox_priv *priv = dev_get_priv(udev);
|
|
struct virtqueue *vq;
|
|
ulong addr;
|
|
int err;
|
|
|
|
/* Create the vring */
|
|
vq = vring_create_virtqueue(index, 4, 4096, udev);
|
|
if (!vq) {
|
|
err = -ENOMEM;
|
|
goto error_new_virtqueue;
|
|
}
|
|
|
|
addr = virtqueue_get_desc_addr(vq);
|
|
priv->queue_desc = addr;
|
|
|
|
addr = virtqueue_get_avail_addr(vq);
|
|
priv->queue_available = addr;
|
|
|
|
addr = virtqueue_get_used_addr(vq);
|
|
priv->queue_used = addr;
|
|
|
|
return vq;
|
|
|
|
error_new_virtqueue:
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static void virtio_sandbox_del_vq(struct virtqueue *vq)
|
|
{
|
|
vring_del_virtqueue(vq);
|
|
}
|
|
|
|
static int virtio_sandbox_del_vqs(struct udevice *udev)
|
|
{
|
|
struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(udev);
|
|
struct virtqueue *vq, *n;
|
|
|
|
list_for_each_entry_safe(vq, n, &uc_priv->vqs, list)
|
|
virtio_sandbox_del_vq(vq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_find_vqs(struct udevice *udev, unsigned int nvqs,
|
|
struct virtqueue *vqs[])
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < nvqs; ++i) {
|
|
vqs[i] = virtio_sandbox_setup_vq(udev, i);
|
|
if (IS_ERR(vqs[i])) {
|
|
virtio_sandbox_del_vqs(udev);
|
|
return PTR_ERR(vqs[i]);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_notify(struct udevice *udev, struct virtqueue *vq)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_sandbox_probe(struct udevice *udev)
|
|
{
|
|
struct virtio_sandbox_priv *priv = dev_get_priv(udev);
|
|
struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(udev);
|
|
|
|
/* fake some information for testing */
|
|
priv->device_features = VIRTIO_F_VERSION_1;
|
|
uc_priv->device = VIRTIO_ID_BLOCK;
|
|
uc_priv->vendor = ('u' << 24) | ('b' << 16) | ('o' << 8) | 't';
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* check virtio device driver's remove routine was called to reset the device */
|
|
static int virtio_sandbox_child_post_remove(struct udevice *vdev)
|
|
{
|
|
u8 status;
|
|
|
|
virtio_get_status(vdev, &status);
|
|
if (status)
|
|
panic("virtio device was not reset\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dm_virtio_ops virtio_sandbox1_ops = {
|
|
.get_config = virtio_sandbox_get_config,
|
|
.set_config = virtio_sandbox_set_config,
|
|
.get_status = virtio_sandbox_get_status,
|
|
.set_status = virtio_sandbox_set_status,
|
|
.reset = virtio_sandbox_reset,
|
|
.get_features = virtio_sandbox_get_features,
|
|
.set_features = virtio_sandbox_set_features,
|
|
.find_vqs = virtio_sandbox_find_vqs,
|
|
.del_vqs = virtio_sandbox_del_vqs,
|
|
.notify = virtio_sandbox_notify,
|
|
};
|
|
|
|
static const struct udevice_id virtio_sandbox1_ids[] = {
|
|
{ .compatible = "sandbox,virtio1" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(virtio_sandbox1) = {
|
|
.name = "virtio-sandbox1",
|
|
.id = UCLASS_VIRTIO,
|
|
.of_match = virtio_sandbox1_ids,
|
|
.ops = &virtio_sandbox1_ops,
|
|
.probe = virtio_sandbox_probe,
|
|
.child_post_remove = virtio_sandbox_child_post_remove,
|
|
.priv_auto_alloc_size = sizeof(struct virtio_sandbox_priv),
|
|
};
|
|
|
|
/* this one without notify op */
|
|
static const struct dm_virtio_ops virtio_sandbox2_ops = {
|
|
.get_config = virtio_sandbox_get_config,
|
|
.set_config = virtio_sandbox_set_config,
|
|
.get_status = virtio_sandbox_get_status,
|
|
.set_status = virtio_sandbox_set_status,
|
|
.reset = virtio_sandbox_reset,
|
|
.get_features = virtio_sandbox_get_features,
|
|
.set_features = virtio_sandbox_set_features,
|
|
.find_vqs = virtio_sandbox_find_vqs,
|
|
.del_vqs = virtio_sandbox_del_vqs,
|
|
};
|
|
|
|
static const struct udevice_id virtio_sandbox2_ids[] = {
|
|
{ .compatible = "sandbox,virtio2" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(virtio_sandbox2) = {
|
|
.name = "virtio-sandbox2",
|
|
.id = UCLASS_VIRTIO,
|
|
.of_match = virtio_sandbox2_ids,
|
|
.ops = &virtio_sandbox2_ops,
|
|
.probe = virtio_sandbox_probe,
|
|
.priv_auto_alloc_size = sizeof(struct virtio_sandbox_priv),
|
|
};
|