smallsolar/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

virtio: Export a few things from virtio_mmio.c

Browse Source 
Add a header file to allow other drivers to implement MMIO and share the
code.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2025-06-27 07:26:45 -06:00
parent 48fa764914
commit 9377438d02
2 changed files with 23 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/virtio/virtio_internal.h Normal file
View File

@@ -0,0 +1,19 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Internal header file for virtio
*
* Copyright 2025 Simon Glass <sjg@chromium.org>
*/
#ifndef _VIRTIO_INTERNAL_H
#define _VIRTIO_INTERNAL_H
struct udevice;
/* MMIO operations from virtio_mmcio.c */
extern const struct dm_virtio_ops virtio_mmio_ops;
/* exported probe function from virtio_mmcio.c */
int virtio_mmio_probe(struct udevice *udev);
#endif

7
drivers/virtio/virtio_mmio.c
View File

@@ -344,13 +344,14 @@ static int virtio_mmio_of_to_plat(struct udevice *udev)
return 0;
}
static int virtio_mmio_probe(struct udevice *udev)
int virtio_mmio_probe(struct udevice *udev)
{
struct virtio_mmio_priv *priv = dev_get_priv(udev);
struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(udev);
u32 magic;
/* Check magic value */
log_debug("probe %p\n", priv->base);
magic = readl(priv->base + VIRTIO_MMIO_MAGIC_VALUE);
if (magic != ('v' | 'i' << 8 | 'r' << 16 | 't' << 24)) {
debug("(%s): wrong magic value 0x%08x!\n", udev->name, magic);
@@ -379,13 +380,13 @@ static int virtio_mmio_probe(struct udevice *udev)
if (priv->version == 1)
writel(PAGE_SIZE, priv->base + VIRTIO_MMIO_GUEST_PAGE_SIZE);
debug("(%s): device (%d) vendor (%08x) version (%d)\n", udev->name,
debug("(%s): device (%04x) vendor (%04x) version (%d)\n", udev->name,
uc_priv->device, uc_priv->vendor, priv->version);
return 0;
}
static const struct dm_virtio_ops virtio_mmio_ops = {
const struct dm_virtio_ops virtio_mmio_ops = {
.get_config = virtio_mmio_get_config,
.set_config = virtio_mmio_set_config,
.generation = virtio_mmio_generation,