mirror of https://gitee.com/openkylin/linux.git
1976 lines
48 KiB
C
1976 lines
48 KiB
C
/*
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* SuperH Ethernet device driver
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*
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* Copyright (C) 2006-2008 Nobuhiro Iwamatsu
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* Copyright (C) 2008-2009 Renesas Solutions Corp.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/spinlock.h>
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#include <linux/interrupt.h>
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#include <linux/dma-mapping.h>
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#include <linux/etherdevice.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/mdio-bitbang.h>
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#include <linux/netdevice.h>
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#include <linux/phy.h>
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#include <linux/cache.h>
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#include <linux/io.h>
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#include <linux/interrupt.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/ethtool.h>
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#include <linux/sh_eth.h>
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#include "sh_eth.h"
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#define SH_ETH_DEF_MSG_ENABLE \
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(NETIF_MSG_LINK | \
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NETIF_MSG_TIMER | \
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NETIF_MSG_RX_ERR| \
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NETIF_MSG_TX_ERR)
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/* There is CPU dependent code */
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#if defined(CONFIG_CPU_SUBTYPE_SH7724)
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#define SH_ETH_RESET_DEFAULT 1
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static void sh_eth_set_duplex(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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if (mdp->duplex) /* Full */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
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else /* Half */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
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}
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static void sh_eth_set_rate(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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switch (mdp->speed) {
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case 10: /* 10BASE */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_RTM, ECMR);
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break;
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case 100:/* 100BASE */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_RTM, ECMR);
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break;
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default:
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break;
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}
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}
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/* SH7724 */
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static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
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.set_duplex = sh_eth_set_duplex,
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.set_rate = sh_eth_set_rate,
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.ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
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.ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
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.eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x01ff009f,
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.tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
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.eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE |
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EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI,
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.tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE,
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.apr = 1,
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.mpr = 1,
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.tpauser = 1,
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.hw_swap = 1,
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.rpadir = 1,
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.rpadir_value = 0x00020000, /* NET_IP_ALIGN assumed to be 2 */
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};
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#elif defined(CONFIG_CPU_SUBTYPE_SH7757)
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#define SH_ETH_HAS_BOTH_MODULES 1
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#define SH_ETH_HAS_TSU 1
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static void sh_eth_set_duplex(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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if (mdp->duplex) /* Full */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
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else /* Half */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
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}
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static void sh_eth_set_rate(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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switch (mdp->speed) {
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case 10: /* 10BASE */
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sh_eth_write(ndev, 0, RTRATE);
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break;
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case 100:/* 100BASE */
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sh_eth_write(ndev, 1, RTRATE);
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break;
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default:
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break;
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}
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}
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/* SH7757 */
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static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
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.set_duplex = sh_eth_set_duplex,
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.set_rate = sh_eth_set_rate,
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.eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
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.rmcr_value = 0x00000001,
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.tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
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.eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE |
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EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI,
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.tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE,
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.apr = 1,
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.mpr = 1,
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.tpauser = 1,
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.hw_swap = 1,
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.no_ade = 1,
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.rpadir = 1,
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.rpadir_value = 2 << 16,
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};
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#define SH_GIGA_ETH_BASE 0xfee00000
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#define GIGA_MALR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8)
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#define GIGA_MAHR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0)
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static void sh_eth_chip_reset_giga(struct net_device *ndev)
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{
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int i;
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unsigned long mahr[2], malr[2];
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/* save MAHR and MALR */
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for (i = 0; i < 2; i++) {
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malr[i] = ioread32((void *)GIGA_MALR(i));
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mahr[i] = ioread32((void *)GIGA_MAHR(i));
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}
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/* reset device */
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iowrite32(ARSTR_ARSTR, (void *)(SH_GIGA_ETH_BASE + 0x1800));
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mdelay(1);
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/* restore MAHR and MALR */
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for (i = 0; i < 2; i++) {
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iowrite32(malr[i], (void *)GIGA_MALR(i));
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iowrite32(mahr[i], (void *)GIGA_MAHR(i));
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}
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}
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static int sh_eth_is_gether(struct sh_eth_private *mdp);
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static void sh_eth_reset(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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int cnt = 100;
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if (sh_eth_is_gether(mdp)) {
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sh_eth_write(ndev, 0x03, EDSR);
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sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER,
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EDMR);
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while (cnt > 0) {
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if (!(sh_eth_read(ndev, EDMR) & 0x3))
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break;
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mdelay(1);
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cnt--;
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}
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if (cnt < 0)
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printk(KERN_ERR "Device reset fail\n");
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/* Table Init */
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sh_eth_write(ndev, 0x0, TDLAR);
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sh_eth_write(ndev, 0x0, TDFAR);
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sh_eth_write(ndev, 0x0, TDFXR);
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sh_eth_write(ndev, 0x0, TDFFR);
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sh_eth_write(ndev, 0x0, RDLAR);
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sh_eth_write(ndev, 0x0, RDFAR);
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sh_eth_write(ndev, 0x0, RDFXR);
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sh_eth_write(ndev, 0x0, RDFFR);
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} else {
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sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER,
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EDMR);
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mdelay(3);
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sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER,
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EDMR);
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}
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}
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static void sh_eth_set_duplex_giga(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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if (mdp->duplex) /* Full */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
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else /* Half */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
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}
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static void sh_eth_set_rate_giga(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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switch (mdp->speed) {
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case 10: /* 10BASE */
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sh_eth_write(ndev, 0x00000000, GECMR);
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break;
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case 100:/* 100BASE */
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sh_eth_write(ndev, 0x00000010, GECMR);
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break;
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case 1000: /* 1000BASE */
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sh_eth_write(ndev, 0x00000020, GECMR);
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break;
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default:
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break;
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}
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}
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/* SH7757(GETHERC) */
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static struct sh_eth_cpu_data sh_eth_my_cpu_data_giga = {
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.chip_reset = sh_eth_chip_reset_giga,
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.set_duplex = sh_eth_set_duplex_giga,
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.set_rate = sh_eth_set_rate_giga,
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.ecsr_value = ECSR_ICD | ECSR_MPD,
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.ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
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.eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
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.tx_check = EESR_TC1 | EESR_FTC,
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.eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \
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EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \
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EESR_ECI,
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.tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \
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EESR_TFE,
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.fdr_value = 0x0000072f,
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.rmcr_value = 0x00000001,
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.apr = 1,
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.mpr = 1,
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.tpauser = 1,
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.bculr = 1,
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.hw_swap = 1,
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.rpadir = 1,
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.rpadir_value = 2 << 16,
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.no_trimd = 1,
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.no_ade = 1,
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};
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static struct sh_eth_cpu_data *sh_eth_get_cpu_data(struct sh_eth_private *mdp)
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{
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if (sh_eth_is_gether(mdp))
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return &sh_eth_my_cpu_data_giga;
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else
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return &sh_eth_my_cpu_data;
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}
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#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
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#define SH_ETH_HAS_TSU 1
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static void sh_eth_chip_reset(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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/* reset device */
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sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
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mdelay(1);
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}
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static void sh_eth_reset(struct net_device *ndev)
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{
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int cnt = 100;
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sh_eth_write(ndev, EDSR_ENALL, EDSR);
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sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR);
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while (cnt > 0) {
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if (!(sh_eth_read(ndev, EDMR) & 0x3))
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break;
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mdelay(1);
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cnt--;
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}
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if (cnt == 0)
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printk(KERN_ERR "Device reset fail\n");
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/* Table Init */
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sh_eth_write(ndev, 0x0, TDLAR);
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sh_eth_write(ndev, 0x0, TDFAR);
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sh_eth_write(ndev, 0x0, TDFXR);
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sh_eth_write(ndev, 0x0, TDFFR);
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sh_eth_write(ndev, 0x0, RDLAR);
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sh_eth_write(ndev, 0x0, RDFAR);
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sh_eth_write(ndev, 0x0, RDFXR);
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sh_eth_write(ndev, 0x0, RDFFR);
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}
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static void sh_eth_set_duplex(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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if (mdp->duplex) /* Full */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
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else /* Half */
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sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
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}
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static void sh_eth_set_rate(struct net_device *ndev)
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{
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struct sh_eth_private *mdp = netdev_priv(ndev);
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switch (mdp->speed) {
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case 10: /* 10BASE */
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sh_eth_write(ndev, GECMR_10, GECMR);
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break;
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case 100:/* 100BASE */
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sh_eth_write(ndev, GECMR_100, GECMR);
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break;
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case 1000: /* 1000BASE */
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sh_eth_write(ndev, GECMR_1000, GECMR);
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break;
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default:
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break;
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}
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}
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/* sh7763 */
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static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
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.chip_reset = sh_eth_chip_reset,
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.set_duplex = sh_eth_set_duplex,
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.set_rate = sh_eth_set_rate,
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.ecsr_value = ECSR_ICD | ECSR_MPD,
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.ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
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.eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
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.tx_check = EESR_TC1 | EESR_FTC,
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.eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \
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EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \
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EESR_ECI,
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.tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \
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EESR_TFE,
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.apr = 1,
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.mpr = 1,
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.tpauser = 1,
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.bculr = 1,
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.hw_swap = 1,
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.no_trimd = 1,
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.no_ade = 1,
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.tsu = 1,
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};
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#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
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#define SH_ETH_RESET_DEFAULT 1
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static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
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.eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
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.apr = 1,
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.mpr = 1,
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.tpauser = 1,
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.hw_swap = 1,
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};
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#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
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#define SH_ETH_RESET_DEFAULT 1
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#define SH_ETH_HAS_TSU 1
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static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
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.eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
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.tsu = 1,
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};
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#endif
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static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
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{
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if (!cd->ecsr_value)
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cd->ecsr_value = DEFAULT_ECSR_INIT;
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if (!cd->ecsipr_value)
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cd->ecsipr_value = DEFAULT_ECSIPR_INIT;
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if (!cd->fcftr_value)
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cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \
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DEFAULT_FIFO_F_D_RFD;
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if (!cd->fdr_value)
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cd->fdr_value = DEFAULT_FDR_INIT;
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if (!cd->rmcr_value)
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cd->rmcr_value = DEFAULT_RMCR_VALUE;
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if (!cd->tx_check)
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cd->tx_check = DEFAULT_TX_CHECK;
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if (!cd->eesr_err_check)
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cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK;
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if (!cd->tx_error_check)
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cd->tx_error_check = DEFAULT_TX_ERROR_CHECK;
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}
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#if defined(SH_ETH_RESET_DEFAULT)
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/* Chip Reset */
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static void sh_eth_reset(struct net_device *ndev)
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{
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sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER, EDMR);
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mdelay(3);
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sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER, EDMR);
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}
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#endif
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#if defined(CONFIG_CPU_SH4)
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static void sh_eth_set_receive_align(struct sk_buff *skb)
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{
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int reserve;
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reserve = SH4_SKB_RX_ALIGN - ((u32)skb->data & (SH4_SKB_RX_ALIGN - 1));
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if (reserve)
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skb_reserve(skb, reserve);
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}
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#else
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static void sh_eth_set_receive_align(struct sk_buff *skb)
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{
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skb_reserve(skb, SH2_SH3_SKB_RX_ALIGN);
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}
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#endif
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|
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/* CPU <-> EDMAC endian convert */
|
|
static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x)
|
|
{
|
|
switch (mdp->edmac_endian) {
|
|
case EDMAC_LITTLE_ENDIAN:
|
|
return cpu_to_le32(x);
|
|
case EDMAC_BIG_ENDIAN:
|
|
return cpu_to_be32(x);
|
|
}
|
|
return x;
|
|
}
|
|
|
|
static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x)
|
|
{
|
|
switch (mdp->edmac_endian) {
|
|
case EDMAC_LITTLE_ENDIAN:
|
|
return le32_to_cpu(x);
|
|
case EDMAC_BIG_ENDIAN:
|
|
return be32_to_cpu(x);
|
|
}
|
|
return x;
|
|
}
|
|
|
|
/*
|
|
* Program the hardware MAC address from dev->dev_addr.
|
|
*/
|
|
static void update_mac_address(struct net_device *ndev)
|
|
{
|
|
sh_eth_write(ndev,
|
|
(ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
|
|
(ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
|
|
sh_eth_write(ndev,
|
|
(ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
|
|
}
|
|
|
|
/*
|
|
* Get MAC address from SuperH MAC address register
|
|
*
|
|
* SuperH's Ethernet device doesn't have 'ROM' to MAC address.
|
|
* This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
|
|
* When you want use this device, you must set MAC address in bootloader.
|
|
*
|
|
*/
|
|
static void read_mac_address(struct net_device *ndev, unsigned char *mac)
|
|
{
|
|
if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
|
|
memcpy(ndev->dev_addr, mac, 6);
|
|
} else {
|
|
ndev->dev_addr[0] = (sh_eth_read(ndev, MAHR) >> 24);
|
|
ndev->dev_addr[1] = (sh_eth_read(ndev, MAHR) >> 16) & 0xFF;
|
|
ndev->dev_addr[2] = (sh_eth_read(ndev, MAHR) >> 8) & 0xFF;
|
|
ndev->dev_addr[3] = (sh_eth_read(ndev, MAHR) & 0xFF);
|
|
ndev->dev_addr[4] = (sh_eth_read(ndev, MALR) >> 8) & 0xFF;
|
|
ndev->dev_addr[5] = (sh_eth_read(ndev, MALR) & 0xFF);
|
|
}
|
|
}
|
|
|
|
static int sh_eth_is_gether(struct sh_eth_private *mdp)
|
|
{
|
|
if (mdp->reg_offset == sh_eth_offset_gigabit)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long sh_eth_get_edtrr_trns(struct sh_eth_private *mdp)
|
|
{
|
|
if (sh_eth_is_gether(mdp))
|
|
return EDTRR_TRNS_GETHER;
|
|
else
|
|
return EDTRR_TRNS_ETHER;
|
|
}
|
|
|
|
struct bb_info {
|
|
void (*set_gate)(void *addr);
|
|
struct mdiobb_ctrl ctrl;
|
|
void *addr;
|
|
u32 mmd_msk;/* MMD */
|
|
u32 mdo_msk;
|
|
u32 mdi_msk;
|
|
u32 mdc_msk;
|
|
};
|
|
|
|
/* PHY bit set */
|
|
static void bb_set(void *addr, u32 msk)
|
|
{
|
|
iowrite32(ioread32(addr) | msk, addr);
|
|
}
|
|
|
|
/* PHY bit clear */
|
|
static void bb_clr(void *addr, u32 msk)
|
|
{
|
|
iowrite32((ioread32(addr) & ~msk), addr);
|
|
}
|
|
|
|
/* PHY bit read */
|
|
static int bb_read(void *addr, u32 msk)
|
|
{
|
|
return (ioread32(addr) & msk) != 0;
|
|
}
|
|
|
|
/* Data I/O pin control */
|
|
static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
|
|
{
|
|
struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
|
|
|
|
if (bitbang->set_gate)
|
|
bitbang->set_gate(bitbang->addr);
|
|
|
|
if (bit)
|
|
bb_set(bitbang->addr, bitbang->mmd_msk);
|
|
else
|
|
bb_clr(bitbang->addr, bitbang->mmd_msk);
|
|
}
|
|
|
|
/* Set bit data*/
|
|
static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
|
|
{
|
|
struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
|
|
|
|
if (bitbang->set_gate)
|
|
bitbang->set_gate(bitbang->addr);
|
|
|
|
if (bit)
|
|
bb_set(bitbang->addr, bitbang->mdo_msk);
|
|
else
|
|
bb_clr(bitbang->addr, bitbang->mdo_msk);
|
|
}
|
|
|
|
/* Get bit data*/
|
|
static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
|
|
{
|
|
struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
|
|
|
|
if (bitbang->set_gate)
|
|
bitbang->set_gate(bitbang->addr);
|
|
|
|
return bb_read(bitbang->addr, bitbang->mdi_msk);
|
|
}
|
|
|
|
/* MDC pin control */
|
|
static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
|
|
{
|
|
struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
|
|
|
|
if (bitbang->set_gate)
|
|
bitbang->set_gate(bitbang->addr);
|
|
|
|
if (bit)
|
|
bb_set(bitbang->addr, bitbang->mdc_msk);
|
|
else
|
|
bb_clr(bitbang->addr, bitbang->mdc_msk);
|
|
}
|
|
|
|
/* mdio bus control struct */
|
|
static struct mdiobb_ops bb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.set_mdc = sh_mdc_ctrl,
|
|
.set_mdio_dir = sh_mmd_ctrl,
|
|
.set_mdio_data = sh_set_mdio,
|
|
.get_mdio_data = sh_get_mdio,
|
|
};
|
|
|
|
/* free skb and descriptor buffer */
|
|
static void sh_eth_ring_free(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
int i;
|
|
|
|
/* Free Rx skb ringbuffer */
|
|
if (mdp->rx_skbuff) {
|
|
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
if (mdp->rx_skbuff[i])
|
|
dev_kfree_skb(mdp->rx_skbuff[i]);
|
|
}
|
|
}
|
|
kfree(mdp->rx_skbuff);
|
|
|
|
/* Free Tx skb ringbuffer */
|
|
if (mdp->tx_skbuff) {
|
|
for (i = 0; i < TX_RING_SIZE; i++) {
|
|
if (mdp->tx_skbuff[i])
|
|
dev_kfree_skb(mdp->tx_skbuff[i]);
|
|
}
|
|
}
|
|
kfree(mdp->tx_skbuff);
|
|
}
|
|
|
|
/* format skb and descriptor buffer */
|
|
static void sh_eth_ring_format(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
int i;
|
|
struct sk_buff *skb;
|
|
struct sh_eth_rxdesc *rxdesc = NULL;
|
|
struct sh_eth_txdesc *txdesc = NULL;
|
|
int rx_ringsize = sizeof(*rxdesc) * RX_RING_SIZE;
|
|
int tx_ringsize = sizeof(*txdesc) * TX_RING_SIZE;
|
|
|
|
mdp->cur_rx = mdp->cur_tx = 0;
|
|
mdp->dirty_rx = mdp->dirty_tx = 0;
|
|
|
|
memset(mdp->rx_ring, 0, rx_ringsize);
|
|
|
|
/* build Rx ring buffer */
|
|
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
/* skb */
|
|
mdp->rx_skbuff[i] = NULL;
|
|
skb = dev_alloc_skb(mdp->rx_buf_sz);
|
|
mdp->rx_skbuff[i] = skb;
|
|
if (skb == NULL)
|
|
break;
|
|
dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
|
|
DMA_FROM_DEVICE);
|
|
skb->dev = ndev; /* Mark as being used by this device. */
|
|
sh_eth_set_receive_align(skb);
|
|
|
|
/* RX descriptor */
|
|
rxdesc = &mdp->rx_ring[i];
|
|
rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
|
|
rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP);
|
|
|
|
/* The size of the buffer is 16 byte boundary. */
|
|
rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
|
|
/* Rx descriptor address set */
|
|
if (i == 0) {
|
|
sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR);
|
|
if (sh_eth_is_gether(mdp))
|
|
sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR);
|
|
}
|
|
}
|
|
|
|
mdp->dirty_rx = (u32) (i - RX_RING_SIZE);
|
|
|
|
/* Mark the last entry as wrapping the ring. */
|
|
rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL);
|
|
|
|
memset(mdp->tx_ring, 0, tx_ringsize);
|
|
|
|
/* build Tx ring buffer */
|
|
for (i = 0; i < TX_RING_SIZE; i++) {
|
|
mdp->tx_skbuff[i] = NULL;
|
|
txdesc = &mdp->tx_ring[i];
|
|
txdesc->status = cpu_to_edmac(mdp, TD_TFP);
|
|
txdesc->buffer_length = 0;
|
|
if (i == 0) {
|
|
/* Tx descriptor address set */
|
|
sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR);
|
|
if (sh_eth_is_gether(mdp))
|
|
sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR);
|
|
}
|
|
}
|
|
|
|
txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
|
|
}
|
|
|
|
/* Get skb and descriptor buffer */
|
|
static int sh_eth_ring_init(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
int rx_ringsize, tx_ringsize, ret = 0;
|
|
|
|
/*
|
|
* +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
|
|
* card needs room to do 8 byte alignment, +2 so we can reserve
|
|
* the first 2 bytes, and +16 gets room for the status word from the
|
|
* card.
|
|
*/
|
|
mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
|
|
(((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
|
|
if (mdp->cd->rpadir)
|
|
mdp->rx_buf_sz += NET_IP_ALIGN;
|
|
|
|
/* Allocate RX and TX skb rings */
|
|
mdp->rx_skbuff = kmalloc(sizeof(*mdp->rx_skbuff) * RX_RING_SIZE,
|
|
GFP_KERNEL);
|
|
if (!mdp->rx_skbuff) {
|
|
dev_err(&ndev->dev, "Cannot allocate Rx skb\n");
|
|
ret = -ENOMEM;
|
|
return ret;
|
|
}
|
|
|
|
mdp->tx_skbuff = kmalloc(sizeof(*mdp->tx_skbuff) * TX_RING_SIZE,
|
|
GFP_KERNEL);
|
|
if (!mdp->tx_skbuff) {
|
|
dev_err(&ndev->dev, "Cannot allocate Tx skb\n");
|
|
ret = -ENOMEM;
|
|
goto skb_ring_free;
|
|
}
|
|
|
|
/* Allocate all Rx descriptors. */
|
|
rx_ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
|
|
mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma,
|
|
GFP_KERNEL);
|
|
|
|
if (!mdp->rx_ring) {
|
|
dev_err(&ndev->dev, "Cannot allocate Rx Ring (size %d bytes)\n",
|
|
rx_ringsize);
|
|
ret = -ENOMEM;
|
|
goto desc_ring_free;
|
|
}
|
|
|
|
mdp->dirty_rx = 0;
|
|
|
|
/* Allocate all Tx descriptors. */
|
|
tx_ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
|
|
mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma,
|
|
GFP_KERNEL);
|
|
if (!mdp->tx_ring) {
|
|
dev_err(&ndev->dev, "Cannot allocate Tx Ring (size %d bytes)\n",
|
|
tx_ringsize);
|
|
ret = -ENOMEM;
|
|
goto desc_ring_free;
|
|
}
|
|
return ret;
|
|
|
|
desc_ring_free:
|
|
/* free DMA buffer */
|
|
dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma);
|
|
|
|
skb_ring_free:
|
|
/* Free Rx and Tx skb ring buffer */
|
|
sh_eth_ring_free(ndev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int sh_eth_dev_init(struct net_device *ndev)
|
|
{
|
|
int ret = 0;
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
u_int32_t rx_int_var, tx_int_var;
|
|
u32 val;
|
|
|
|
/* Soft Reset */
|
|
sh_eth_reset(ndev);
|
|
|
|
/* Descriptor format */
|
|
sh_eth_ring_format(ndev);
|
|
if (mdp->cd->rpadir)
|
|
sh_eth_write(ndev, mdp->cd->rpadir_value, RPADIR);
|
|
|
|
/* all sh_eth int mask */
|
|
sh_eth_write(ndev, 0, EESIPR);
|
|
|
|
#if defined(__LITTLE_ENDIAN__)
|
|
if (mdp->cd->hw_swap)
|
|
sh_eth_write(ndev, EDMR_EL, EDMR);
|
|
else
|
|
#endif
|
|
sh_eth_write(ndev, 0, EDMR);
|
|
|
|
/* FIFO size set */
|
|
sh_eth_write(ndev, mdp->cd->fdr_value, FDR);
|
|
sh_eth_write(ndev, 0, TFTR);
|
|
|
|
/* Frame recv control */
|
|
sh_eth_write(ndev, mdp->cd->rmcr_value, RMCR);
|
|
|
|
rx_int_var = mdp->rx_int_var = DESC_I_RINT8 | DESC_I_RINT5;
|
|
tx_int_var = mdp->tx_int_var = DESC_I_TINT2;
|
|
sh_eth_write(ndev, rx_int_var | tx_int_var, TRSCER);
|
|
|
|
if (mdp->cd->bculr)
|
|
sh_eth_write(ndev, 0x800, BCULR); /* Burst sycle set */
|
|
|
|
sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR);
|
|
|
|
if (!mdp->cd->no_trimd)
|
|
sh_eth_write(ndev, 0, TRIMD);
|
|
|
|
/* Recv frame limit set register */
|
|
sh_eth_write(ndev, RFLR_VALUE, RFLR);
|
|
|
|
sh_eth_write(ndev, sh_eth_read(ndev, EESR), EESR);
|
|
sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
|
|
|
|
/* PAUSE Prohibition */
|
|
val = (sh_eth_read(ndev, ECMR) & ECMR_DM) |
|
|
ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE;
|
|
|
|
sh_eth_write(ndev, val, ECMR);
|
|
|
|
if (mdp->cd->set_rate)
|
|
mdp->cd->set_rate(ndev);
|
|
|
|
/* E-MAC Status Register clear */
|
|
sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR);
|
|
|
|
/* E-MAC Interrupt Enable register */
|
|
sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR);
|
|
|
|
/* Set MAC address */
|
|
update_mac_address(ndev);
|
|
|
|
/* mask reset */
|
|
if (mdp->cd->apr)
|
|
sh_eth_write(ndev, APR_AP, APR);
|
|
if (mdp->cd->mpr)
|
|
sh_eth_write(ndev, MPR_MP, MPR);
|
|
if (mdp->cd->tpauser)
|
|
sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER);
|
|
|
|
/* Setting the Rx mode will start the Rx process. */
|
|
sh_eth_write(ndev, EDRRR_R, EDRRR);
|
|
|
|
netif_start_queue(ndev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* free Tx skb function */
|
|
static int sh_eth_txfree(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
struct sh_eth_txdesc *txdesc;
|
|
int freeNum = 0;
|
|
int entry = 0;
|
|
|
|
for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
|
|
entry = mdp->dirty_tx % TX_RING_SIZE;
|
|
txdesc = &mdp->tx_ring[entry];
|
|
if (txdesc->status & cpu_to_edmac(mdp, TD_TACT))
|
|
break;
|
|
/* Free the original skb. */
|
|
if (mdp->tx_skbuff[entry]) {
|
|
dma_unmap_single(&ndev->dev, txdesc->addr,
|
|
txdesc->buffer_length, DMA_TO_DEVICE);
|
|
dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
|
|
mdp->tx_skbuff[entry] = NULL;
|
|
freeNum++;
|
|
}
|
|
txdesc->status = cpu_to_edmac(mdp, TD_TFP);
|
|
if (entry >= TX_RING_SIZE - 1)
|
|
txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
|
|
|
|
mdp->stats.tx_packets++;
|
|
mdp->stats.tx_bytes += txdesc->buffer_length;
|
|
}
|
|
return freeNum;
|
|
}
|
|
|
|
/* Packet receive function */
|
|
static int sh_eth_rx(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
struct sh_eth_rxdesc *rxdesc;
|
|
|
|
int entry = mdp->cur_rx % RX_RING_SIZE;
|
|
int boguscnt = (mdp->dirty_rx + RX_RING_SIZE) - mdp->cur_rx;
|
|
struct sk_buff *skb;
|
|
u16 pkt_len = 0;
|
|
u32 desc_status;
|
|
|
|
rxdesc = &mdp->rx_ring[entry];
|
|
while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) {
|
|
desc_status = edmac_to_cpu(mdp, rxdesc->status);
|
|
pkt_len = rxdesc->frame_length;
|
|
|
|
if (--boguscnt < 0)
|
|
break;
|
|
|
|
if (!(desc_status & RDFEND))
|
|
mdp->stats.rx_length_errors++;
|
|
|
|
if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
|
|
RD_RFS5 | RD_RFS6 | RD_RFS10)) {
|
|
mdp->stats.rx_errors++;
|
|
if (desc_status & RD_RFS1)
|
|
mdp->stats.rx_crc_errors++;
|
|
if (desc_status & RD_RFS2)
|
|
mdp->stats.rx_frame_errors++;
|
|
if (desc_status & RD_RFS3)
|
|
mdp->stats.rx_length_errors++;
|
|
if (desc_status & RD_RFS4)
|
|
mdp->stats.rx_length_errors++;
|
|
if (desc_status & RD_RFS6)
|
|
mdp->stats.rx_missed_errors++;
|
|
if (desc_status & RD_RFS10)
|
|
mdp->stats.rx_over_errors++;
|
|
} else {
|
|
if (!mdp->cd->hw_swap)
|
|
sh_eth_soft_swap(
|
|
phys_to_virt(ALIGN(rxdesc->addr, 4)),
|
|
pkt_len + 2);
|
|
skb = mdp->rx_skbuff[entry];
|
|
mdp->rx_skbuff[entry] = NULL;
|
|
if (mdp->cd->rpadir)
|
|
skb_reserve(skb, NET_IP_ALIGN);
|
|
skb_put(skb, pkt_len);
|
|
skb->protocol = eth_type_trans(skb, ndev);
|
|
netif_rx(skb);
|
|
mdp->stats.rx_packets++;
|
|
mdp->stats.rx_bytes += pkt_len;
|
|
}
|
|
rxdesc->status |= cpu_to_edmac(mdp, RD_RACT);
|
|
entry = (++mdp->cur_rx) % RX_RING_SIZE;
|
|
rxdesc = &mdp->rx_ring[entry];
|
|
}
|
|
|
|
/* Refill the Rx ring buffers. */
|
|
for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
|
|
entry = mdp->dirty_rx % RX_RING_SIZE;
|
|
rxdesc = &mdp->rx_ring[entry];
|
|
/* The size of the buffer is 16 byte boundary. */
|
|
rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
|
|
|
|
if (mdp->rx_skbuff[entry] == NULL) {
|
|
skb = dev_alloc_skb(mdp->rx_buf_sz);
|
|
mdp->rx_skbuff[entry] = skb;
|
|
if (skb == NULL)
|
|
break; /* Better luck next round. */
|
|
dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
|
|
DMA_FROM_DEVICE);
|
|
skb->dev = ndev;
|
|
sh_eth_set_receive_align(skb);
|
|
|
|
skb_checksum_none_assert(skb);
|
|
rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
|
|
}
|
|
if (entry >= RX_RING_SIZE - 1)
|
|
rxdesc->status |=
|
|
cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL);
|
|
else
|
|
rxdesc->status |=
|
|
cpu_to_edmac(mdp, RD_RACT | RD_RFP);
|
|
}
|
|
|
|
/* Restart Rx engine if stopped. */
|
|
/* If we don't need to check status, don't. -KDU */
|
|
if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R))
|
|
sh_eth_write(ndev, EDRRR_R, EDRRR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sh_eth_rcv_snd_disable(struct net_device *ndev)
|
|
{
|
|
/* disable tx and rx */
|
|
sh_eth_write(ndev, sh_eth_read(ndev, ECMR) &
|
|
~(ECMR_RE | ECMR_TE), ECMR);
|
|
}
|
|
|
|
static void sh_eth_rcv_snd_enable(struct net_device *ndev)
|
|
{
|
|
/* enable tx and rx */
|
|
sh_eth_write(ndev, sh_eth_read(ndev, ECMR) |
|
|
(ECMR_RE | ECMR_TE), ECMR);
|
|
}
|
|
|
|
/* error control function */
|
|
static void sh_eth_error(struct net_device *ndev, int intr_status)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
u32 felic_stat;
|
|
u32 link_stat;
|
|
u32 mask;
|
|
|
|
if (intr_status & EESR_ECI) {
|
|
felic_stat = sh_eth_read(ndev, ECSR);
|
|
sh_eth_write(ndev, felic_stat, ECSR); /* clear int */
|
|
if (felic_stat & ECSR_ICD)
|
|
mdp->stats.tx_carrier_errors++;
|
|
if (felic_stat & ECSR_LCHNG) {
|
|
/* Link Changed */
|
|
if (mdp->cd->no_psr || mdp->no_ether_link) {
|
|
if (mdp->link == PHY_DOWN)
|
|
link_stat = 0;
|
|
else
|
|
link_stat = PHY_ST_LINK;
|
|
} else {
|
|
link_stat = (sh_eth_read(ndev, PSR));
|
|
if (mdp->ether_link_active_low)
|
|
link_stat = ~link_stat;
|
|
}
|
|
if (!(link_stat & PHY_ST_LINK))
|
|
sh_eth_rcv_snd_disable(ndev);
|
|
else {
|
|
/* Link Up */
|
|
sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) &
|
|
~DMAC_M_ECI, EESIPR);
|
|
/*clear int */
|
|
sh_eth_write(ndev, sh_eth_read(ndev, ECSR),
|
|
ECSR);
|
|
sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) |
|
|
DMAC_M_ECI, EESIPR);
|
|
/* enable tx and rx */
|
|
sh_eth_rcv_snd_enable(ndev);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (intr_status & EESR_TWB) {
|
|
/* Write buck end. unused write back interrupt */
|
|
if (intr_status & EESR_TABT) /* Transmit Abort int */
|
|
mdp->stats.tx_aborted_errors++;
|
|
if (netif_msg_tx_err(mdp))
|
|
dev_err(&ndev->dev, "Transmit Abort\n");
|
|
}
|
|
|
|
if (intr_status & EESR_RABT) {
|
|
/* Receive Abort int */
|
|
if (intr_status & EESR_RFRMER) {
|
|
/* Receive Frame Overflow int */
|
|
mdp->stats.rx_frame_errors++;
|
|
if (netif_msg_rx_err(mdp))
|
|
dev_err(&ndev->dev, "Receive Abort\n");
|
|
}
|
|
}
|
|
|
|
if (intr_status & EESR_TDE) {
|
|
/* Transmit Descriptor Empty int */
|
|
mdp->stats.tx_fifo_errors++;
|
|
if (netif_msg_tx_err(mdp))
|
|
dev_err(&ndev->dev, "Transmit Descriptor Empty\n");
|
|
}
|
|
|
|
if (intr_status & EESR_TFE) {
|
|
/* FIFO under flow */
|
|
mdp->stats.tx_fifo_errors++;
|
|
if (netif_msg_tx_err(mdp))
|
|
dev_err(&ndev->dev, "Transmit FIFO Under flow\n");
|
|
}
|
|
|
|
if (intr_status & EESR_RDE) {
|
|
/* Receive Descriptor Empty int */
|
|
mdp->stats.rx_over_errors++;
|
|
|
|
if (sh_eth_read(ndev, EDRRR) ^ EDRRR_R)
|
|
sh_eth_write(ndev, EDRRR_R, EDRRR);
|
|
if (netif_msg_rx_err(mdp))
|
|
dev_err(&ndev->dev, "Receive Descriptor Empty\n");
|
|
}
|
|
|
|
if (intr_status & EESR_RFE) {
|
|
/* Receive FIFO Overflow int */
|
|
mdp->stats.rx_fifo_errors++;
|
|
if (netif_msg_rx_err(mdp))
|
|
dev_err(&ndev->dev, "Receive FIFO Overflow\n");
|
|
}
|
|
|
|
if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) {
|
|
/* Address Error */
|
|
mdp->stats.tx_fifo_errors++;
|
|
if (netif_msg_tx_err(mdp))
|
|
dev_err(&ndev->dev, "Address Error\n");
|
|
}
|
|
|
|
mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE;
|
|
if (mdp->cd->no_ade)
|
|
mask &= ~EESR_ADE;
|
|
if (intr_status & mask) {
|
|
/* Tx error */
|
|
u32 edtrr = sh_eth_read(ndev, EDTRR);
|
|
/* dmesg */
|
|
dev_err(&ndev->dev, "TX error. status=%8.8x cur_tx=%8.8x ",
|
|
intr_status, mdp->cur_tx);
|
|
dev_err(&ndev->dev, "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
|
|
mdp->dirty_tx, (u32) ndev->state, edtrr);
|
|
/* dirty buffer free */
|
|
sh_eth_txfree(ndev);
|
|
|
|
/* SH7712 BUG */
|
|
if (edtrr ^ sh_eth_get_edtrr_trns(mdp)) {
|
|
/* tx dma start */
|
|
sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
|
|
}
|
|
/* wakeup */
|
|
netif_wake_queue(ndev);
|
|
}
|
|
}
|
|
|
|
static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
|
|
{
|
|
struct net_device *ndev = netdev;
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
struct sh_eth_cpu_data *cd = mdp->cd;
|
|
irqreturn_t ret = IRQ_NONE;
|
|
u32 intr_status = 0;
|
|
|
|
spin_lock(&mdp->lock);
|
|
|
|
/* Get interrpt stat */
|
|
intr_status = sh_eth_read(ndev, EESR);
|
|
/* Clear interrupt */
|
|
if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF |
|
|
EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF |
|
|
cd->tx_check | cd->eesr_err_check)) {
|
|
sh_eth_write(ndev, intr_status, EESR);
|
|
ret = IRQ_HANDLED;
|
|
} else
|
|
goto other_irq;
|
|
|
|
if (intr_status & (EESR_FRC | /* Frame recv*/
|
|
EESR_RMAF | /* Multi cast address recv*/
|
|
EESR_RRF | /* Bit frame recv */
|
|
EESR_RTLF | /* Long frame recv*/
|
|
EESR_RTSF | /* short frame recv */
|
|
EESR_PRE | /* PHY-LSI recv error */
|
|
EESR_CERF)){ /* recv frame CRC error */
|
|
sh_eth_rx(ndev);
|
|
}
|
|
|
|
/* Tx Check */
|
|
if (intr_status & cd->tx_check) {
|
|
sh_eth_txfree(ndev);
|
|
netif_wake_queue(ndev);
|
|
}
|
|
|
|
if (intr_status & cd->eesr_err_check)
|
|
sh_eth_error(ndev, intr_status);
|
|
|
|
other_irq:
|
|
spin_unlock(&mdp->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void sh_eth_timer(unsigned long data)
|
|
{
|
|
struct net_device *ndev = (struct net_device *)data;
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
|
|
mod_timer(&mdp->timer, jiffies + (10 * HZ));
|
|
}
|
|
|
|
/* PHY state control function */
|
|
static void sh_eth_adjust_link(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
struct phy_device *phydev = mdp->phydev;
|
|
int new_state = 0;
|
|
|
|
if (phydev->link != PHY_DOWN) {
|
|
if (phydev->duplex != mdp->duplex) {
|
|
new_state = 1;
|
|
mdp->duplex = phydev->duplex;
|
|
if (mdp->cd->set_duplex)
|
|
mdp->cd->set_duplex(ndev);
|
|
}
|
|
|
|
if (phydev->speed != mdp->speed) {
|
|
new_state = 1;
|
|
mdp->speed = phydev->speed;
|
|
if (mdp->cd->set_rate)
|
|
mdp->cd->set_rate(ndev);
|
|
}
|
|
if (mdp->link == PHY_DOWN) {
|
|
sh_eth_write(ndev,
|
|
(sh_eth_read(ndev, ECMR) & ~ECMR_TXF), ECMR);
|
|
new_state = 1;
|
|
mdp->link = phydev->link;
|
|
}
|
|
} else if (mdp->link) {
|
|
new_state = 1;
|
|
mdp->link = PHY_DOWN;
|
|
mdp->speed = 0;
|
|
mdp->duplex = -1;
|
|
}
|
|
|
|
if (new_state && netif_msg_link(mdp))
|
|
phy_print_status(phydev);
|
|
}
|
|
|
|
/* PHY init function */
|
|
static int sh_eth_phy_init(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
char phy_id[MII_BUS_ID_SIZE + 3];
|
|
struct phy_device *phydev = NULL;
|
|
|
|
snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
|
|
mdp->mii_bus->id , mdp->phy_id);
|
|
|
|
mdp->link = PHY_DOWN;
|
|
mdp->speed = 0;
|
|
mdp->duplex = -1;
|
|
|
|
/* Try connect to PHY */
|
|
phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link,
|
|
0, mdp->phy_interface);
|
|
if (IS_ERR(phydev)) {
|
|
dev_err(&ndev->dev, "phy_connect failed\n");
|
|
return PTR_ERR(phydev);
|
|
}
|
|
|
|
dev_info(&ndev->dev, "attached phy %i to driver %s\n",
|
|
phydev->addr, phydev->drv->name);
|
|
|
|
mdp->phydev = phydev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* PHY control start function */
|
|
static int sh_eth_phy_start(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
int ret;
|
|
|
|
ret = sh_eth_phy_init(ndev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* reset phy - this also wakes it from PDOWN */
|
|
phy_write(mdp->phydev, MII_BMCR, BMCR_RESET);
|
|
phy_start(mdp->phydev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_eth_get_settings(struct net_device *ndev,
|
|
struct ethtool_cmd *ecmd)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
spin_lock_irqsave(&mdp->lock, flags);
|
|
ret = phy_ethtool_gset(mdp->phydev, ecmd);
|
|
spin_unlock_irqrestore(&mdp->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int sh_eth_set_settings(struct net_device *ndev,
|
|
struct ethtool_cmd *ecmd)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
spin_lock_irqsave(&mdp->lock, flags);
|
|
|
|
/* disable tx and rx */
|
|
sh_eth_rcv_snd_disable(ndev);
|
|
|
|
ret = phy_ethtool_sset(mdp->phydev, ecmd);
|
|
if (ret)
|
|
goto error_exit;
|
|
|
|
if (ecmd->duplex == DUPLEX_FULL)
|
|
mdp->duplex = 1;
|
|
else
|
|
mdp->duplex = 0;
|
|
|
|
if (mdp->cd->set_duplex)
|
|
mdp->cd->set_duplex(ndev);
|
|
|
|
error_exit:
|
|
mdelay(1);
|
|
|
|
/* enable tx and rx */
|
|
sh_eth_rcv_snd_enable(ndev);
|
|
|
|
spin_unlock_irqrestore(&mdp->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int sh_eth_nway_reset(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
spin_lock_irqsave(&mdp->lock, flags);
|
|
ret = phy_start_aneg(mdp->phydev);
|
|
spin_unlock_irqrestore(&mdp->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static u32 sh_eth_get_msglevel(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
return mdp->msg_enable;
|
|
}
|
|
|
|
static void sh_eth_set_msglevel(struct net_device *ndev, u32 value)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
mdp->msg_enable = value;
|
|
}
|
|
|
|
static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = {
|
|
"rx_current", "tx_current",
|
|
"rx_dirty", "tx_dirty",
|
|
};
|
|
#define SH_ETH_STATS_LEN ARRAY_SIZE(sh_eth_gstrings_stats)
|
|
|
|
static int sh_eth_get_sset_count(struct net_device *netdev, int sset)
|
|
{
|
|
switch (sset) {
|
|
case ETH_SS_STATS:
|
|
return SH_ETH_STATS_LEN;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static void sh_eth_get_ethtool_stats(struct net_device *ndev,
|
|
struct ethtool_stats *stats, u64 *data)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
int i = 0;
|
|
|
|
/* device-specific stats */
|
|
data[i++] = mdp->cur_rx;
|
|
data[i++] = mdp->cur_tx;
|
|
data[i++] = mdp->dirty_rx;
|
|
data[i++] = mdp->dirty_tx;
|
|
}
|
|
|
|
static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
|
|
{
|
|
switch (stringset) {
|
|
case ETH_SS_STATS:
|
|
memcpy(data, *sh_eth_gstrings_stats,
|
|
sizeof(sh_eth_gstrings_stats));
|
|
break;
|
|
}
|
|
}
|
|
|
|
static struct ethtool_ops sh_eth_ethtool_ops = {
|
|
.get_settings = sh_eth_get_settings,
|
|
.set_settings = sh_eth_set_settings,
|
|
.nway_reset = sh_eth_nway_reset,
|
|
.get_msglevel = sh_eth_get_msglevel,
|
|
.set_msglevel = sh_eth_set_msglevel,
|
|
.get_link = ethtool_op_get_link,
|
|
.get_strings = sh_eth_get_strings,
|
|
.get_ethtool_stats = sh_eth_get_ethtool_stats,
|
|
.get_sset_count = sh_eth_get_sset_count,
|
|
};
|
|
|
|
/* network device open function */
|
|
static int sh_eth_open(struct net_device *ndev)
|
|
{
|
|
int ret = 0;
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
|
|
pm_runtime_get_sync(&mdp->pdev->dev);
|
|
|
|
ret = request_irq(ndev->irq, sh_eth_interrupt,
|
|
#if defined(CONFIG_CPU_SUBTYPE_SH7763) || \
|
|
defined(CONFIG_CPU_SUBTYPE_SH7764) || \
|
|
defined(CONFIG_CPU_SUBTYPE_SH7757)
|
|
IRQF_SHARED,
|
|
#else
|
|
0,
|
|
#endif
|
|
ndev->name, ndev);
|
|
if (ret) {
|
|
dev_err(&ndev->dev, "Can not assign IRQ number\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Descriptor set */
|
|
ret = sh_eth_ring_init(ndev);
|
|
if (ret)
|
|
goto out_free_irq;
|
|
|
|
/* device init */
|
|
ret = sh_eth_dev_init(ndev);
|
|
if (ret)
|
|
goto out_free_irq;
|
|
|
|
/* PHY control start*/
|
|
ret = sh_eth_phy_start(ndev);
|
|
if (ret)
|
|
goto out_free_irq;
|
|
|
|
/* Set the timer to check for link beat. */
|
|
init_timer(&mdp->timer);
|
|
mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
|
|
setup_timer(&mdp->timer, sh_eth_timer, (unsigned long)ndev);
|
|
|
|
return ret;
|
|
|
|
out_free_irq:
|
|
free_irq(ndev->irq, ndev);
|
|
pm_runtime_put_sync(&mdp->pdev->dev);
|
|
return ret;
|
|
}
|
|
|
|
/* Timeout function */
|
|
static void sh_eth_tx_timeout(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
struct sh_eth_rxdesc *rxdesc;
|
|
int i;
|
|
|
|
netif_stop_queue(ndev);
|
|
|
|
if (netif_msg_timer(mdp))
|
|
dev_err(&ndev->dev, "%s: transmit timed out, status %8.8x,"
|
|
" resetting...\n", ndev->name, (int)sh_eth_read(ndev, EESR));
|
|
|
|
/* tx_errors count up */
|
|
mdp->stats.tx_errors++;
|
|
|
|
/* timer off */
|
|
del_timer_sync(&mdp->timer);
|
|
|
|
/* Free all the skbuffs in the Rx queue. */
|
|
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
rxdesc = &mdp->rx_ring[i];
|
|
rxdesc->status = 0;
|
|
rxdesc->addr = 0xBADF00D0;
|
|
if (mdp->rx_skbuff[i])
|
|
dev_kfree_skb(mdp->rx_skbuff[i]);
|
|
mdp->rx_skbuff[i] = NULL;
|
|
}
|
|
for (i = 0; i < TX_RING_SIZE; i++) {
|
|
if (mdp->tx_skbuff[i])
|
|
dev_kfree_skb(mdp->tx_skbuff[i]);
|
|
mdp->tx_skbuff[i] = NULL;
|
|
}
|
|
|
|
/* device init */
|
|
sh_eth_dev_init(ndev);
|
|
|
|
/* timer on */
|
|
mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
|
|
add_timer(&mdp->timer);
|
|
}
|
|
|
|
/* Packet transmit function */
|
|
static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
struct sh_eth_txdesc *txdesc;
|
|
u32 entry;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&mdp->lock, flags);
|
|
if ((mdp->cur_tx - mdp->dirty_tx) >= (TX_RING_SIZE - 4)) {
|
|
if (!sh_eth_txfree(ndev)) {
|
|
if (netif_msg_tx_queued(mdp))
|
|
dev_warn(&ndev->dev, "TxFD exhausted.\n");
|
|
netif_stop_queue(ndev);
|
|
spin_unlock_irqrestore(&mdp->lock, flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&mdp->lock, flags);
|
|
|
|
entry = mdp->cur_tx % TX_RING_SIZE;
|
|
mdp->tx_skbuff[entry] = skb;
|
|
txdesc = &mdp->tx_ring[entry];
|
|
/* soft swap. */
|
|
if (!mdp->cd->hw_swap)
|
|
sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)),
|
|
skb->len + 2);
|
|
txdesc->addr = dma_map_single(&ndev->dev, skb->data, skb->len,
|
|
DMA_TO_DEVICE);
|
|
if (skb->len < ETHERSMALL)
|
|
txdesc->buffer_length = ETHERSMALL;
|
|
else
|
|
txdesc->buffer_length = skb->len;
|
|
|
|
if (entry >= TX_RING_SIZE - 1)
|
|
txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE);
|
|
else
|
|
txdesc->status |= cpu_to_edmac(mdp, TD_TACT);
|
|
|
|
mdp->cur_tx++;
|
|
|
|
if (!(sh_eth_read(ndev, EDTRR) & sh_eth_get_edtrr_trns(mdp)))
|
|
sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/* device close function */
|
|
static int sh_eth_close(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
int ringsize;
|
|
|
|
netif_stop_queue(ndev);
|
|
|
|
/* Disable interrupts by clearing the interrupt mask. */
|
|
sh_eth_write(ndev, 0x0000, EESIPR);
|
|
|
|
/* Stop the chip's Tx and Rx processes. */
|
|
sh_eth_write(ndev, 0, EDTRR);
|
|
sh_eth_write(ndev, 0, EDRRR);
|
|
|
|
/* PHY Disconnect */
|
|
if (mdp->phydev) {
|
|
phy_stop(mdp->phydev);
|
|
phy_disconnect(mdp->phydev);
|
|
}
|
|
|
|
free_irq(ndev->irq, ndev);
|
|
|
|
del_timer_sync(&mdp->timer);
|
|
|
|
/* Free all the skbuffs in the Rx queue. */
|
|
sh_eth_ring_free(ndev);
|
|
|
|
/* free DMA buffer */
|
|
ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
|
|
dma_free_coherent(NULL, ringsize, mdp->rx_ring, mdp->rx_desc_dma);
|
|
|
|
/* free DMA buffer */
|
|
ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
|
|
dma_free_coherent(NULL, ringsize, mdp->tx_ring, mdp->tx_desc_dma);
|
|
|
|
pm_runtime_put_sync(&mdp->pdev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
|
|
pm_runtime_get_sync(&mdp->pdev->dev);
|
|
|
|
mdp->stats.tx_dropped += sh_eth_read(ndev, TROCR);
|
|
sh_eth_write(ndev, 0, TROCR); /* (write clear) */
|
|
mdp->stats.collisions += sh_eth_read(ndev, CDCR);
|
|
sh_eth_write(ndev, 0, CDCR); /* (write clear) */
|
|
mdp->stats.tx_carrier_errors += sh_eth_read(ndev, LCCR);
|
|
sh_eth_write(ndev, 0, LCCR); /* (write clear) */
|
|
if (sh_eth_is_gether(mdp)) {
|
|
mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CERCR);
|
|
sh_eth_write(ndev, 0, CERCR); /* (write clear) */
|
|
mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CEECR);
|
|
sh_eth_write(ndev, 0, CEECR); /* (write clear) */
|
|
} else {
|
|
mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CNDCR);
|
|
sh_eth_write(ndev, 0, CNDCR); /* (write clear) */
|
|
}
|
|
pm_runtime_put_sync(&mdp->pdev->dev);
|
|
|
|
return &mdp->stats;
|
|
}
|
|
|
|
/* ioctl to device funciotn*/
|
|
static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq,
|
|
int cmd)
|
|
{
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
struct phy_device *phydev = mdp->phydev;
|
|
|
|
if (!netif_running(ndev))
|
|
return -EINVAL;
|
|
|
|
if (!phydev)
|
|
return -ENODEV;
|
|
|
|
return phy_mii_ioctl(phydev, rq, cmd);
|
|
}
|
|
|
|
#if defined(SH_ETH_HAS_TSU)
|
|
/* Multicast reception directions set */
|
|
static void sh_eth_set_multicast_list(struct net_device *ndev)
|
|
{
|
|
if (ndev->flags & IFF_PROMISC) {
|
|
/* Set promiscuous. */
|
|
sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_MCT) |
|
|
ECMR_PRM, ECMR);
|
|
} else {
|
|
/* Normal, unicast/broadcast-only mode. */
|
|
sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) |
|
|
ECMR_MCT, ECMR);
|
|
}
|
|
}
|
|
#endif /* SH_ETH_HAS_TSU */
|
|
|
|
/* SuperH's TSU register init function */
|
|
static void sh_eth_tsu_init(struct sh_eth_private *mdp)
|
|
{
|
|
sh_eth_tsu_write(mdp, 0, TSU_FWEN0); /* Disable forward(0->1) */
|
|
sh_eth_tsu_write(mdp, 0, TSU_FWEN1); /* Disable forward(1->0) */
|
|
sh_eth_tsu_write(mdp, 0, TSU_FCM); /* forward fifo 3k-3k */
|
|
sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0);
|
|
sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1);
|
|
sh_eth_tsu_write(mdp, 0, TSU_PRISL0);
|
|
sh_eth_tsu_write(mdp, 0, TSU_PRISL1);
|
|
sh_eth_tsu_write(mdp, 0, TSU_FWSL0);
|
|
sh_eth_tsu_write(mdp, 0, TSU_FWSL1);
|
|
sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC);
|
|
if (sh_eth_is_gether(mdp)) {
|
|
sh_eth_tsu_write(mdp, 0, TSU_QTAG0); /* Disable QTAG(0->1) */
|
|
sh_eth_tsu_write(mdp, 0, TSU_QTAG1); /* Disable QTAG(1->0) */
|
|
} else {
|
|
sh_eth_tsu_write(mdp, 0, TSU_QTAGM0); /* Disable QTAG(0->1) */
|
|
sh_eth_tsu_write(mdp, 0, TSU_QTAGM1); /* Disable QTAG(1->0) */
|
|
}
|
|
sh_eth_tsu_write(mdp, 0, TSU_FWSR); /* all interrupt status clear */
|
|
sh_eth_tsu_write(mdp, 0, TSU_FWINMK); /* Disable all interrupt */
|
|
sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
|
|
sh_eth_tsu_write(mdp, 0, TSU_POST1); /* Disable CAM entry [ 0- 7] */
|
|
sh_eth_tsu_write(mdp, 0, TSU_POST2); /* Disable CAM entry [ 8-15] */
|
|
sh_eth_tsu_write(mdp, 0, TSU_POST3); /* Disable CAM entry [16-23] */
|
|
sh_eth_tsu_write(mdp, 0, TSU_POST4); /* Disable CAM entry [24-31] */
|
|
}
|
|
|
|
/* MDIO bus release function */
|
|
static int sh_mdio_release(struct net_device *ndev)
|
|
{
|
|
struct mii_bus *bus = dev_get_drvdata(&ndev->dev);
|
|
|
|
/* unregister mdio bus */
|
|
mdiobus_unregister(bus);
|
|
|
|
/* remove mdio bus info from net_device */
|
|
dev_set_drvdata(&ndev->dev, NULL);
|
|
|
|
/* free interrupts memory */
|
|
kfree(bus->irq);
|
|
|
|
/* free bitbang info */
|
|
free_mdio_bitbang(bus);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* MDIO bus init function */
|
|
static int sh_mdio_init(struct net_device *ndev, int id,
|
|
struct sh_eth_plat_data *pd)
|
|
{
|
|
int ret, i;
|
|
struct bb_info *bitbang;
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
|
|
/* create bit control struct for PHY */
|
|
bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL);
|
|
if (!bitbang) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/* bitbang init */
|
|
bitbang->addr = mdp->addr + mdp->reg_offset[PIR];
|
|
bitbang->set_gate = pd->set_mdio_gate;
|
|
bitbang->mdi_msk = 0x08;
|
|
bitbang->mdo_msk = 0x04;
|
|
bitbang->mmd_msk = 0x02;/* MMD */
|
|
bitbang->mdc_msk = 0x01;
|
|
bitbang->ctrl.ops = &bb_ops;
|
|
|
|
/* MII controller setting */
|
|
mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
|
|
if (!mdp->mii_bus) {
|
|
ret = -ENOMEM;
|
|
goto out_free_bitbang;
|
|
}
|
|
|
|
/* Hook up MII support for ethtool */
|
|
mdp->mii_bus->name = "sh_mii";
|
|
mdp->mii_bus->parent = &ndev->dev;
|
|
snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%x", id);
|
|
|
|
/* PHY IRQ */
|
|
mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
|
|
if (!mdp->mii_bus->irq) {
|
|
ret = -ENOMEM;
|
|
goto out_free_bus;
|
|
}
|
|
|
|
for (i = 0; i < PHY_MAX_ADDR; i++)
|
|
mdp->mii_bus->irq[i] = PHY_POLL;
|
|
|
|
/* regist mdio bus */
|
|
ret = mdiobus_register(mdp->mii_bus);
|
|
if (ret)
|
|
goto out_free_irq;
|
|
|
|
dev_set_drvdata(&ndev->dev, mdp->mii_bus);
|
|
|
|
return 0;
|
|
|
|
out_free_irq:
|
|
kfree(mdp->mii_bus->irq);
|
|
|
|
out_free_bus:
|
|
free_mdio_bitbang(mdp->mii_bus);
|
|
|
|
out_free_bitbang:
|
|
kfree(bitbang);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static const u16 *sh_eth_get_register_offset(int register_type)
|
|
{
|
|
const u16 *reg_offset = NULL;
|
|
|
|
switch (register_type) {
|
|
case SH_ETH_REG_GIGABIT:
|
|
reg_offset = sh_eth_offset_gigabit;
|
|
break;
|
|
case SH_ETH_REG_FAST_SH4:
|
|
reg_offset = sh_eth_offset_fast_sh4;
|
|
break;
|
|
case SH_ETH_REG_FAST_SH3_SH2:
|
|
reg_offset = sh_eth_offset_fast_sh3_sh2;
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "Unknown register type (%d)\n", register_type);
|
|
break;
|
|
}
|
|
|
|
return reg_offset;
|
|
}
|
|
|
|
static const struct net_device_ops sh_eth_netdev_ops = {
|
|
.ndo_open = sh_eth_open,
|
|
.ndo_stop = sh_eth_close,
|
|
.ndo_start_xmit = sh_eth_start_xmit,
|
|
.ndo_get_stats = sh_eth_get_stats,
|
|
#if defined(SH_ETH_HAS_TSU)
|
|
.ndo_set_rx_mode = sh_eth_set_multicast_list,
|
|
#endif
|
|
.ndo_tx_timeout = sh_eth_tx_timeout,
|
|
.ndo_do_ioctl = sh_eth_do_ioctl,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
|
.ndo_change_mtu = eth_change_mtu,
|
|
};
|
|
|
|
static int sh_eth_drv_probe(struct platform_device *pdev)
|
|
{
|
|
int ret, devno = 0;
|
|
struct resource *res;
|
|
struct net_device *ndev = NULL;
|
|
struct sh_eth_private *mdp = NULL;
|
|
struct sh_eth_plat_data *pd;
|
|
|
|
/* get base addr */
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (unlikely(res == NULL)) {
|
|
dev_err(&pdev->dev, "invalid resource\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ndev = alloc_etherdev(sizeof(struct sh_eth_private));
|
|
if (!ndev) {
|
|
dev_err(&pdev->dev, "Could not allocate device.\n");
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/* The sh Ether-specific entries in the device structure. */
|
|
ndev->base_addr = res->start;
|
|
devno = pdev->id;
|
|
if (devno < 0)
|
|
devno = 0;
|
|
|
|
ndev->dma = -1;
|
|
ret = platform_get_irq(pdev, 0);
|
|
if (ret < 0) {
|
|
ret = -ENODEV;
|
|
goto out_release;
|
|
}
|
|
ndev->irq = ret;
|
|
|
|
SET_NETDEV_DEV(ndev, &pdev->dev);
|
|
|
|
/* Fill in the fields of the device structure with ethernet values. */
|
|
ether_setup(ndev);
|
|
|
|
mdp = netdev_priv(ndev);
|
|
mdp->addr = ioremap(res->start, resource_size(res));
|
|
if (mdp->addr == NULL) {
|
|
ret = -ENOMEM;
|
|
dev_err(&pdev->dev, "ioremap failed.\n");
|
|
goto out_release;
|
|
}
|
|
|
|
spin_lock_init(&mdp->lock);
|
|
mdp->pdev = pdev;
|
|
pm_runtime_enable(&pdev->dev);
|
|
pm_runtime_resume(&pdev->dev);
|
|
|
|
pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data);
|
|
/* get PHY ID */
|
|
mdp->phy_id = pd->phy;
|
|
mdp->phy_interface = pd->phy_interface;
|
|
/* EDMAC endian */
|
|
mdp->edmac_endian = pd->edmac_endian;
|
|
mdp->no_ether_link = pd->no_ether_link;
|
|
mdp->ether_link_active_low = pd->ether_link_active_low;
|
|
mdp->reg_offset = sh_eth_get_register_offset(pd->register_type);
|
|
|
|
/* set cpu data */
|
|
#if defined(SH_ETH_HAS_BOTH_MODULES)
|
|
mdp->cd = sh_eth_get_cpu_data(mdp);
|
|
#else
|
|
mdp->cd = &sh_eth_my_cpu_data;
|
|
#endif
|
|
sh_eth_set_default_cpu_data(mdp->cd);
|
|
|
|
/* set function */
|
|
ndev->netdev_ops = &sh_eth_netdev_ops;
|
|
SET_ETHTOOL_OPS(ndev, &sh_eth_ethtool_ops);
|
|
ndev->watchdog_timeo = TX_TIMEOUT;
|
|
|
|
/* debug message level */
|
|
mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE;
|
|
mdp->post_rx = POST_RX >> (devno << 1);
|
|
mdp->post_fw = POST_FW >> (devno << 1);
|
|
|
|
/* read and set MAC address */
|
|
read_mac_address(ndev, pd->mac_addr);
|
|
|
|
/* First device only init */
|
|
if (!devno) {
|
|
if (mdp->cd->tsu) {
|
|
struct resource *rtsu;
|
|
rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
if (!rtsu) {
|
|
dev_err(&pdev->dev, "Not found TSU resource\n");
|
|
goto out_release;
|
|
}
|
|
mdp->tsu_addr = ioremap(rtsu->start,
|
|
resource_size(rtsu));
|
|
}
|
|
if (mdp->cd->chip_reset)
|
|
mdp->cd->chip_reset(ndev);
|
|
|
|
if (mdp->cd->tsu) {
|
|
/* TSU init (Init only)*/
|
|
sh_eth_tsu_init(mdp);
|
|
}
|
|
}
|
|
|
|
/* network device register */
|
|
ret = register_netdev(ndev);
|
|
if (ret)
|
|
goto out_release;
|
|
|
|
/* mdio bus init */
|
|
ret = sh_mdio_init(ndev, pdev->id, pd);
|
|
if (ret)
|
|
goto out_unregister;
|
|
|
|
/* print device information */
|
|
pr_info("Base address at 0x%x, %pM, IRQ %d.\n",
|
|
(u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
|
|
|
|
platform_set_drvdata(pdev, ndev);
|
|
|
|
return ret;
|
|
|
|
out_unregister:
|
|
unregister_netdev(ndev);
|
|
|
|
out_release:
|
|
/* net_dev free */
|
|
if (mdp && mdp->addr)
|
|
iounmap(mdp->addr);
|
|
if (mdp && mdp->tsu_addr)
|
|
iounmap(mdp->tsu_addr);
|
|
if (ndev)
|
|
free_netdev(ndev);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int sh_eth_drv_remove(struct platform_device *pdev)
|
|
{
|
|
struct net_device *ndev = platform_get_drvdata(pdev);
|
|
struct sh_eth_private *mdp = netdev_priv(ndev);
|
|
|
|
iounmap(mdp->tsu_addr);
|
|
sh_mdio_release(ndev);
|
|
unregister_netdev(ndev);
|
|
pm_runtime_disable(&pdev->dev);
|
|
iounmap(mdp->addr);
|
|
free_netdev(ndev);
|
|
platform_set_drvdata(pdev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_eth_runtime_nop(struct device *dev)
|
|
{
|
|
/*
|
|
* Runtime PM callback shared between ->runtime_suspend()
|
|
* and ->runtime_resume(). Simply returns success.
|
|
*
|
|
* This driver re-initializes all registers after
|
|
* pm_runtime_get_sync() anyway so there is no need
|
|
* to save and restore registers here.
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
static struct dev_pm_ops sh_eth_dev_pm_ops = {
|
|
.runtime_suspend = sh_eth_runtime_nop,
|
|
.runtime_resume = sh_eth_runtime_nop,
|
|
};
|
|
|
|
static struct platform_driver sh_eth_driver = {
|
|
.probe = sh_eth_drv_probe,
|
|
.remove = sh_eth_drv_remove,
|
|
.driver = {
|
|
.name = CARDNAME,
|
|
.pm = &sh_eth_dev_pm_ops,
|
|
},
|
|
};
|
|
|
|
static int __init sh_eth_init(void)
|
|
{
|
|
return platform_driver_register(&sh_eth_driver);
|
|
}
|
|
|
|
static void __exit sh_eth_cleanup(void)
|
|
{
|
|
platform_driver_unregister(&sh_eth_driver);
|
|
}
|
|
|
|
module_init(sh_eth_init);
|
|
module_exit(sh_eth_cleanup);
|
|
|
|
MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
|
|
MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
|
|
MODULE_LICENSE("GPL v2");
|