Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Provide diagnose information via misc device /dev/diag.
|
|
*
|
|
* Copyright IBM Corp. 2024
|
|
*/
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/ioctl.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/miscdevice.h>
|
|
#include <linux/types.h>
|
|
|
|
#include <uapi/asm/diag.h>
|
|
#include "diag_ioctl.h"
|
|
|
|
static long diag_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
long rc;
|
|
|
|
switch (cmd) {
|
|
case DIAG324_GET_PIBLEN:
|
|
rc = diag324_piblen(arg);
|
|
break;
|
|
case DIAG324_GET_PIBBUF:
|
|
rc = diag324_pibbuf(arg);
|
|
break;
|
|
case DIAG310_GET_STRIDE:
|
|
rc = diag310_memtop_stride(arg);
|
|
break;
|
|
case DIAG310_GET_MEMTOPLEN:
|
|
rc = diag310_memtop_len(arg);
|
|
break;
|
|
case DIAG310_GET_MEMTOPBUF:
|
|
rc = diag310_memtop_buf(arg);
|
|
break;
|
|
default:
|
|
rc = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static const struct file_operations fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = nonseekable_open,
|
|
.unlocked_ioctl = diag_ioctl,
|
|
};
|
|
|
|
static struct miscdevice diagdev = {
|
|
.name = "diag",
|
|
.minor = MISC_DYNAMIC_MINOR,
|
|
.fops = &fops,
|
|
.mode = 0444,
|
|
};
|
|
|
|
static int diag_init(void)
|
|
{
|
|
return misc_register(&diagdev);
|
|
}
|
|
|
|
device_initcall(diag_init);
|