https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 42226c989789d8da4af1de0c31070c96726d990c authored by Linus Torvalds on 16 May 2022, 01:08:58 UTC
Linux 5.18-rc7
Linux 5.18-rc7
Tip revision: 42226c9
uio_dfl.c
// SPDX-License-Identifier: GPL-2.0
/*
* Generic DFL driver for Userspace I/O devicess
*
* Copyright (C) 2021 Intel Corporation, Inc.
*/
#include <linux/dfl.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/uio_driver.h>
#define DRIVER_NAME "uio_dfl"
static int uio_dfl_probe(struct dfl_device *ddev)
{
struct resource *r = &ddev->mmio_res;
struct device *dev = &ddev->dev;
struct uio_info *uioinfo;
struct uio_mem *uiomem;
int ret;
uioinfo = devm_kzalloc(dev, sizeof(struct uio_info), GFP_KERNEL);
if (!uioinfo)
return -ENOMEM;
uioinfo->name = DRIVER_NAME;
uioinfo->version = "0";
uiomem = &uioinfo->mem[0];
uiomem->memtype = UIO_MEM_PHYS;
uiomem->addr = r->start & PAGE_MASK;
uiomem->offs = r->start & ~PAGE_MASK;
uiomem->size = (uiomem->offs + resource_size(r)
+ PAGE_SIZE - 1) & PAGE_MASK;
uiomem->name = r->name;
/* Irq is yet to be supported */
uioinfo->irq = UIO_IRQ_NONE;
ret = devm_uio_register_device(dev, uioinfo);
if (ret)
dev_err(dev, "unable to register uio device\n");
return ret;
}
#define FME_FEATURE_ID_ETH_GROUP 0x10
static const struct dfl_device_id uio_dfl_ids[] = {
{ FME_ID, FME_FEATURE_ID_ETH_GROUP },
{ }
};
MODULE_DEVICE_TABLE(dfl, uio_dfl_ids);
static struct dfl_driver uio_dfl_driver = {
.drv = {
.name = DRIVER_NAME,
},
.id_table = uio_dfl_ids,
.probe = uio_dfl_probe,
};
module_dfl_driver(uio_dfl_driver);
MODULE_DESCRIPTION("Generic DFL driver for Userspace I/O devices");
MODULE_AUTHOR("Intel Corporation");
MODULE_LICENSE("GPL v2");