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rtltool.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
################################################################################
#
# r8168 is the Linux device driver released for Realtek Gigabit Ethernet
# controllers with PCI-Express interface.
#
# Copyright(c) 2024 Realtek Semiconductor Corp. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, see <http://www.gnu.org/licenses/>.
#
# Author:
# Realtek NIC software team <[email protected]>
# No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
#
################################################################################
*/
/************************************************************************************
* This product is covered by one or more of the following patents:
* US6,570,884, US6,115,776, and US6,327,625.
***********************************************************************************/
#include <linux/module.h>
#include <linux/version.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/delay.h>
#include <linux/in.h>
#include <linux/ethtool.h>
#include <asm/uaccess.h>
#include "r8168.h"
#include "rtl_eeprom.h"
#include "rtltool.h"
int rtl8168_tool_ioctl(struct rtl8168_private *tp, struct ifreq *ifr)
{
struct rtltool_cmd my_cmd;
int ret;
if (copy_from_user(&my_cmd, ifr->ifr_data, sizeof(my_cmd)))
return -EFAULT;
ret = 0;
switch (my_cmd.cmd) {
case RTLTOOL_READ_MAC:
if ((my_cmd.offset + my_cmd.len) > R8168_REGS_SIZE) {
ret = -EINVAL;
break;
}
if (my_cmd.len==1)
my_cmd.data = readb(tp->mmio_addr+my_cmd.offset);
else if (my_cmd.len==2)
my_cmd.data = readw(tp->mmio_addr+(my_cmd.offset&~1));
else if (my_cmd.len==4)
my_cmd.data = readl(tp->mmio_addr+(my_cmd.offset&~3));
else {
ret = -EOPNOTSUPP;
break;
}
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTLTOOL_WRITE_MAC:
if ((my_cmd.offset + my_cmd.len) > R8168_REGS_SIZE) {
ret = -EINVAL;
break;
}
if (my_cmd.len==1)
writeb(my_cmd.data, tp->mmio_addr+my_cmd.offset);
else if (my_cmd.len==2)
writew(my_cmd.data, tp->mmio_addr+(my_cmd.offset&~1));
else if (my_cmd.len==4)
writel(my_cmd.data, tp->mmio_addr+(my_cmd.offset&~3));
else {
ret = -EOPNOTSUPP;
break;
}
break;
case RTLTOOL_READ_PHY:
my_cmd.data = rtl8168_mdio_prot_read(tp, my_cmd.offset);
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTLTOOL_WRITE_PHY:
rtl8168_mdio_prot_write(tp, my_cmd.offset, my_cmd.data);
break;
case RTLTOOL_READ_EPHY:
my_cmd.data = rtl8168_ephy_read(tp, my_cmd.offset);
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTLTOOL_WRITE_EPHY:
rtl8168_ephy_write(tp, my_cmd.offset, my_cmd.data);
break;
case RTLTOOL_READ_ERI:
my_cmd.data = 0;
if (my_cmd.len==1 || my_cmd.len==2 || my_cmd.len==4) {
my_cmd.data = rtl8168_eri_read(tp, my_cmd.offset, my_cmd.len, ERIAR_ExGMAC);
} else {
ret = -EOPNOTSUPP;
break;
}
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTLTOOL_WRITE_ERI:
if (my_cmd.len==1 || my_cmd.len==2 || my_cmd.len==4) {
rtl8168_eri_write(tp, my_cmd.offset, my_cmd.len, my_cmd.data, ERIAR_ExGMAC);
} else {
ret = -EOPNOTSUPP;
break;
}
break;
case RTLTOOL_READ_PCI:
my_cmd.data = 0;
if (my_cmd.len==1)
pci_read_config_byte(tp->pci_dev, my_cmd.offset,
(u8 *)&my_cmd.data);
else if (my_cmd.len==2)
pci_read_config_word(tp->pci_dev, my_cmd.offset,
(u16 *)&my_cmd.data);
else if (my_cmd.len==4)
pci_read_config_dword(tp->pci_dev, my_cmd.offset,
&my_cmd.data);
else {
ret = -EOPNOTSUPP;
break;
}
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTLTOOL_WRITE_PCI:
if (my_cmd.len==1)
pci_write_config_byte(tp->pci_dev, my_cmd.offset,
my_cmd.data);
else if (my_cmd.len==2)
pci_write_config_word(tp->pci_dev, my_cmd.offset,
my_cmd.data);
else if (my_cmd.len==4)
pci_write_config_dword(tp->pci_dev, my_cmd.offset,
my_cmd.data);
else {
ret = -EOPNOTSUPP;
break;
}
break;
case RTLTOOL_READ_EEPROM:
my_cmd.data = rtl8168_eeprom_read_sc(tp, my_cmd.offset);
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTLTOOL_WRITE_EEPROM:
rtl8168_eeprom_write_sc(tp, my_cmd.offset, my_cmd.data);
break;
case RTL_READ_OOB_MAC:
rtl8168_oob_mutex_lock(tp);
my_cmd.data = rtl8168_ocp_read(tp, my_cmd.offset, 4);
rtl8168_oob_mutex_unlock(tp);
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTL_WRITE_OOB_MAC:
if (my_cmd.len == 0 || my_cmd.len > 4)
return -EOPNOTSUPP;
rtl8168_oob_mutex_lock(tp);
rtl8168_ocp_write(tp, my_cmd.offset, my_cmd.len, my_cmd.data);
rtl8168_oob_mutex_unlock(tp);
break;
case RTL_ENABLE_PCI_DIAG:
tp->rtk_enable_diag = 1;
dprintk("enable rtk diag\n");
break;
case RTL_DISABLE_PCI_DIAG:
tp->rtk_enable_diag = 0;
dprintk("disable rtk diag\n");
break;
case RTL_READ_MAC_OCP:
if (my_cmd.offset % 2)
return -EOPNOTSUPP;
my_cmd.data = rtl8168_mac_ocp_read(tp, my_cmd.offset);
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTL_WRITE_MAC_OCP:
if ((my_cmd.offset % 2) || (my_cmd.len != 2))
return -EOPNOTSUPP;
rtl8168_mac_ocp_write(tp, my_cmd.offset, (u16)my_cmd.data);
break;
case RTL_DIRECT_READ_PHY_OCP:
my_cmd.data = rtl8168_mdio_prot_direct_read_phy_ocp(tp, my_cmd.offset);
if (copy_to_user(ifr->ifr_data, &my_cmd, sizeof(my_cmd))) {
ret = -EFAULT;
break;
}
break;
case RTL_DIRECT_WRITE_PHY_OCP:
rtl8168_mdio_prot_direct_write_phy_ocp(tp, my_cmd.offset, my_cmd.data);
break;
default:
ret = -EOPNOTSUPP;
break;
}
return ret;
}