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Add info ioctl

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This commit is contained in:
Alex Forencich 2019-07-23 18:43:04 -07:00
parent a862711a0a
commit 5ea84cb7b5
2 changed files with 81 additions and 0 deletions
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30
modules/mqnic/mqnic_dev.c
View File

@ -32,6 +32,7 @@ either expressed or implied, of The Regents of the University of California.
*/
#include "mqnic.h"
#include "mqnic_ioctl.h"
static int mqnic_open(struct inode *inode, struct file *filp)
{
@ -103,9 +104,38 @@ fail_invalid_offset:
return -EINVAL;
}
static long mqnic_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct mqnic_dev *mqnic = filp->private_data;
if (_IOC_TYPE(cmd) != MQNIC_IOCTL_TYPE)
return -ENOTTY;
switch (cmd) {
case MQNIC_IOCTL_INFO:
{
struct mqnic_ioctl_info ctl;
ctl.fw_id = mqnic->fw_id;
ctl.fw_ver = mqnic->fw_ver;
ctl.board_id = mqnic->board_id;
ctl.board_ver = mqnic->board_ver;
ctl.regs_size = mqnic->hw_regs_size;
if (copy_to_user((void *)arg, &ctl, sizeof(ctl)) != 0)
return -EFAULT;
return 0;
}
default:
return -ENOTTY;
}
}
const struct file_operations mqnic_fops = {
.owner = THIS_MODULE,
.open = mqnic_open,
.release = mqnic_release,
.mmap = mqnic_mmap,
.unlocked_ioctl = mqnic_ioctl,
};

51
modules/mqnic/mqnic_ioctl.h Normal file
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@ -0,0 +1,51 @@
/*
Copyright 2019, The Regents of the University of California.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ''AS
IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE REGENTS OF THE UNIVERSITY OF CALIFORNIA OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of The Regents of the University of California.
*/
#ifndef MQNIC_IOCTL_H
#define MQNIC_IOCTL_H
#include <linux/types.h>
#define MQNIC_IOCTL_TYPE 0x88
#define MQNIC_IOCTL_INFO _IOR(MQNIC_IOCTL_TYPE, 0xf0, struct mqnic_ioctl_info)
struct mqnic_ioctl_info {
__u32 fw_id;
__u32 fw_ver;
__u32 board_id;
__u32 board_ver;
size_t regs_size;
};
#endif /* MQNIC_IOCTL_H */