| /* |
| * SuperH Ethernet device driver |
| * |
| * Copyright (C) 2006-2012 Nobuhiro Iwamatsu |
| * Copyright (C) 2008-2012 Renesas Solutions Corp. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope 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, write to the Free Software Foundation, Inc., |
| * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * The full GNU General Public License is included in this distribution in |
| * the file called "COPYING". |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/spinlock.h> |
| #include <linux/interrupt.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/etherdevice.h> |
| #include <linux/delay.h> |
| #include <linux/platform_device.h> |
| #include <linux/mdio-bitbang.h> |
| #include <linux/netdevice.h> |
| #include <linux/phy.h> |
| #include <linux/cache.h> |
| #include <linux/io.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/slab.h> |
| #include <linux/ethtool.h> |
| #include <linux/if_vlan.h> |
| #include <linux/clk.h> |
| #include <linux/sh_eth.h> |
| |
| #include "sh_eth.h" |
| |
| #define SH_ETH_DEF_MSG_ENABLE \ |
| (NETIF_MSG_LINK | \ |
| NETIF_MSG_TIMER | \ |
| NETIF_MSG_RX_ERR| \ |
| NETIF_MSG_TX_ERR) |
| |
| #if defined(CONFIG_CPU_SUBTYPE_SH7734) || \ |
| defined(CONFIG_CPU_SUBTYPE_SH7763) || \ |
| defined(CONFIG_ARCH_R8A7740) |
| static void sh_eth_select_mii(struct net_device *ndev) |
| { |
| u32 value = 0x0; |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| switch (mdp->phy_interface) { |
| case PHY_INTERFACE_MODE_GMII: |
| value = 0x2; |
| break; |
| case PHY_INTERFACE_MODE_MII: |
| value = 0x1; |
| break; |
| case PHY_INTERFACE_MODE_RMII: |
| value = 0x0; |
| break; |
| default: |
| pr_warn("PHY interface mode was not setup. Set to MII.\n"); |
| value = 0x1; |
| break; |
| } |
| |
| sh_eth_write(ndev, value, RMII_MII); |
| } |
| #endif |
| |
| /* There is CPU dependent code */ |
| #if defined(CONFIG_CPU_SUBTYPE_SH7724) |
| #define SH_ETH_RESET_DEFAULT 1 |
| static void sh_eth_set_duplex(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| if (mdp->duplex) /* Full */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); |
| else /* Half */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); |
| } |
| |
| static void sh_eth_set_rate(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| switch (mdp->speed) { |
| case 10: /* 10BASE */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_RTM, ECMR); |
| break; |
| case 100:/* 100BASE */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_RTM, ECMR); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* SH7724 */ |
| static struct sh_eth_cpu_data sh_eth_my_cpu_data = { |
| .set_duplex = sh_eth_set_duplex, |
| .set_rate = sh_eth_set_rate, |
| |
| .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD, |
| .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP, |
| .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x01ff009f, |
| |
| .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, |
| .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | |
| EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, |
| .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, |
| |
| .apr = 1, |
| .mpr = 1, |
| .tpauser = 1, |
| .hw_swap = 1, |
| .rpadir = 1, |
| .rpadir_value = 0x00020000, /* NET_IP_ALIGN assumed to be 2 */ |
| }; |
| #elif defined(CONFIG_CPU_SUBTYPE_SH7757) |
| #define SH_ETH_HAS_BOTH_MODULES 1 |
| #define SH_ETH_HAS_TSU 1 |
| static int sh_eth_check_reset(struct net_device *ndev); |
| |
| static void sh_eth_set_duplex(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| if (mdp->duplex) /* Full */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); |
| else /* Half */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); |
| } |
| |
| static void sh_eth_set_rate(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| switch (mdp->speed) { |
| case 10: /* 10BASE */ |
| sh_eth_write(ndev, 0, RTRATE); |
| break; |
| case 100:/* 100BASE */ |
| sh_eth_write(ndev, 1, RTRATE); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* SH7757 */ |
| static struct sh_eth_cpu_data sh_eth_my_cpu_data = { |
| .set_duplex = sh_eth_set_duplex, |
| .set_rate = sh_eth_set_rate, |
| |
| .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, |
| .rmcr_value = 0x00000001, |
| |
| .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, |
| .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | |
| EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, |
| .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, |
| |
| .apr = 1, |
| .mpr = 1, |
| .tpauser = 1, |
| .hw_swap = 1, |
| .no_ade = 1, |
| .rpadir = 1, |
| .rpadir_value = 2 << 16, |
| }; |
| |
| #define SH_GIGA_ETH_BASE 0xfee00000 |
| #define GIGA_MALR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8) |
| #define GIGA_MAHR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0) |
| static void sh_eth_chip_reset_giga(struct net_device *ndev) |
| { |
| int i; |
| unsigned long mahr[2], malr[2]; |
| |
| /* save MAHR and MALR */ |
| for (i = 0; i < 2; i++) { |
| malr[i] = ioread32((void *)GIGA_MALR(i)); |
| mahr[i] = ioread32((void *)GIGA_MAHR(i)); |
| } |
| |
| /* reset device */ |
| iowrite32(ARSTR_ARSTR, (void *)(SH_GIGA_ETH_BASE + 0x1800)); |
| mdelay(1); |
| |
| /* restore MAHR and MALR */ |
| for (i = 0; i < 2; i++) { |
| iowrite32(malr[i], (void *)GIGA_MALR(i)); |
| iowrite32(mahr[i], (void *)GIGA_MAHR(i)); |
| } |
| } |
| |
| static int sh_eth_is_gether(struct sh_eth_private *mdp); |
| static int sh_eth_reset(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| int ret = 0; |
| |
| if (sh_eth_is_gether(mdp)) { |
| sh_eth_write(ndev, 0x03, EDSR); |
| sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, |
| EDMR); |
| |
| ret = sh_eth_check_reset(ndev); |
| if (ret) |
| goto out; |
| |
| /* Table Init */ |
| sh_eth_write(ndev, 0x0, TDLAR); |
| sh_eth_write(ndev, 0x0, TDFAR); |
| sh_eth_write(ndev, 0x0, TDFXR); |
| sh_eth_write(ndev, 0x0, TDFFR); |
| sh_eth_write(ndev, 0x0, RDLAR); |
| sh_eth_write(ndev, 0x0, RDFAR); |
| sh_eth_write(ndev, 0x0, RDFXR); |
| sh_eth_write(ndev, 0x0, RDFFR); |
| } else { |
| sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER, |
| EDMR); |
| mdelay(3); |
| sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER, |
| EDMR); |
| } |
| |
| out: |
| return ret; |
| } |
| |
| static void sh_eth_set_duplex_giga(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| if (mdp->duplex) /* Full */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); |
| else /* Half */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); |
| } |
| |
| static void sh_eth_set_rate_giga(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| switch (mdp->speed) { |
| case 10: /* 10BASE */ |
| sh_eth_write(ndev, 0x00000000, GECMR); |
| break; |
| case 100:/* 100BASE */ |
| sh_eth_write(ndev, 0x00000010, GECMR); |
| break; |
| case 1000: /* 1000BASE */ |
| sh_eth_write(ndev, 0x00000020, GECMR); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* SH7757(GETHERC) */ |
| static struct sh_eth_cpu_data sh_eth_my_cpu_data_giga = { |
| .chip_reset = sh_eth_chip_reset_giga, |
| .set_duplex = sh_eth_set_duplex_giga, |
| .set_rate = sh_eth_set_rate_giga, |
| |
| .ecsr_value = ECSR_ICD | ECSR_MPD, |
| .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP, |
| .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, |
| |
| .tx_check = EESR_TC1 | EESR_FTC, |
| .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ |
| EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ |
| EESR_ECI, |
| .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ |
| EESR_TFE, |
| .fdr_value = 0x0000072f, |
| .rmcr_value = 0x00000001, |
| |
| .apr = 1, |
| .mpr = 1, |
| .tpauser = 1, |
| .bculr = 1, |
| .hw_swap = 1, |
| .rpadir = 1, |
| .rpadir_value = 2 << 16, |
| .no_trimd = 1, |
| .no_ade = 1, |
| .tsu = 1, |
| }; |
| |
| static struct sh_eth_cpu_data *sh_eth_get_cpu_data(struct sh_eth_private *mdp) |
| { |
| if (sh_eth_is_gether(mdp)) |
| return &sh_eth_my_cpu_data_giga; |
| else |
| return &sh_eth_my_cpu_data; |
| } |
| |
| #elif defined(CONFIG_CPU_SUBTYPE_SH7734) || defined(CONFIG_CPU_SUBTYPE_SH7763) |
| #define SH_ETH_HAS_TSU 1 |
| static int sh_eth_check_reset(struct net_device *ndev); |
| static void sh_eth_reset_hw_crc(struct net_device *ndev); |
| |
| static void sh_eth_chip_reset(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| /* reset device */ |
| sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR); |
| mdelay(1); |
| } |
| |
| static void sh_eth_set_duplex(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| if (mdp->duplex) /* Full */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); |
| else /* Half */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); |
| } |
| |
| static void sh_eth_set_rate(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| switch (mdp->speed) { |
| case 10: /* 10BASE */ |
| sh_eth_write(ndev, GECMR_10, GECMR); |
| break; |
| case 100:/* 100BASE */ |
| sh_eth_write(ndev, GECMR_100, GECMR); |
| break; |
| case 1000: /* 1000BASE */ |
| sh_eth_write(ndev, GECMR_1000, GECMR); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* sh7763 */ |
| static struct sh_eth_cpu_data sh_eth_my_cpu_data = { |
| .chip_reset = sh_eth_chip_reset, |
| .set_duplex = sh_eth_set_duplex, |
| .set_rate = sh_eth_set_rate, |
| |
| .ecsr_value = ECSR_ICD | ECSR_MPD, |
| .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP, |
| .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, |
| |
| .tx_check = EESR_TC1 | EESR_FTC, |
| .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ |
| EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ |
| EESR_ECI, |
| .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ |
| EESR_TFE, |
| |
| .apr = 1, |
| .mpr = 1, |
| .tpauser = 1, |
| .bculr = 1, |
| .hw_swap = 1, |
| .no_trimd = 1, |
| .no_ade = 1, |
| .tsu = 1, |
| #if defined(CONFIG_CPU_SUBTYPE_SH7734) |
| .hw_crc = 1, |
| .select_mii = 1, |
| #endif |
| }; |
| |
| static int sh_eth_reset(struct net_device *ndev) |
| { |
| int ret = 0; |
| |
| sh_eth_write(ndev, EDSR_ENALL, EDSR); |
| sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR); |
| |
| ret = sh_eth_check_reset(ndev); |
| if (ret) |
| goto out; |
| |
| /* Table Init */ |
| sh_eth_write(ndev, 0x0, TDLAR); |
| sh_eth_write(ndev, 0x0, TDFAR); |
| sh_eth_write(ndev, 0x0, TDFXR); |
| sh_eth_write(ndev, 0x0, TDFFR); |
| sh_eth_write(ndev, 0x0, RDLAR); |
| sh_eth_write(ndev, 0x0, RDFAR); |
| sh_eth_write(ndev, 0x0, RDFXR); |
| sh_eth_write(ndev, 0x0, RDFFR); |
| |
| /* Reset HW CRC register */ |
| sh_eth_reset_hw_crc(ndev); |
| |
| /* Select MII mode */ |
| if (sh_eth_my_cpu_data.select_mii) |
| sh_eth_select_mii(ndev); |
| out: |
| return ret; |
| } |
| |
| static void sh_eth_reset_hw_crc(struct net_device *ndev) |
| { |
| if (sh_eth_my_cpu_data.hw_crc) |
| sh_eth_write(ndev, 0x0, CSMR); |
| } |
| |
| #elif defined(CONFIG_ARCH_R8A7740) |
| #define SH_ETH_HAS_TSU 1 |
| static int sh_eth_check_reset(struct net_device *ndev); |
| |
| static void sh_eth_chip_reset(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| /* reset device */ |
| sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR); |
| mdelay(1); |
| |
| sh_eth_select_mii(ndev); |
| } |
| |
| static int sh_eth_reset(struct net_device *ndev) |
| { |
| int ret = 0; |
| |
| sh_eth_write(ndev, EDSR_ENALL, EDSR); |
| sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR); |
| |
| ret = sh_eth_check_reset(ndev); |
| if (ret) |
| goto out; |
| |
| /* Table Init */ |
| sh_eth_write(ndev, 0x0, TDLAR); |
| sh_eth_write(ndev, 0x0, TDFAR); |
| sh_eth_write(ndev, 0x0, TDFXR); |
| sh_eth_write(ndev, 0x0, TDFFR); |
| sh_eth_write(ndev, 0x0, RDLAR); |
| sh_eth_write(ndev, 0x0, RDFAR); |
| sh_eth_write(ndev, 0x0, RDFXR); |
| sh_eth_write(ndev, 0x0, RDFFR); |
| |
| out: |
| return ret; |
| } |
| |
| static void sh_eth_set_duplex(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| if (mdp->duplex) /* Full */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); |
| else /* Half */ |
| sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); |
| } |
| |
| static void sh_eth_set_rate(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| switch (mdp->speed) { |
| case 10: /* 10BASE */ |
| sh_eth_write(ndev, GECMR_10, GECMR); |
| break; |
| case 100:/* 100BASE */ |
| sh_eth_write(ndev, GECMR_100, GECMR); |
| break; |
| case 1000: /* 1000BASE */ |
| sh_eth_write(ndev, GECMR_1000, GECMR); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* R8A7740 */ |
| static struct sh_eth_cpu_data sh_eth_my_cpu_data = { |
| .chip_reset = sh_eth_chip_reset, |
| .set_duplex = sh_eth_set_duplex, |
| .set_rate = sh_eth_set_rate, |
| |
| .ecsr_value = ECSR_ICD | ECSR_MPD, |
| .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP, |
| .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, |
| |
| .tx_check = EESR_TC1 | EESR_FTC, |
| .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ |
| EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ |
| EESR_ECI, |
| .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ |
| EESR_TFE, |
| |
| .apr = 1, |
| .mpr = 1, |
| .tpauser = 1, |
| .bculr = 1, |
| .hw_swap = 1, |
| .no_trimd = 1, |
| .no_ade = 1, |
| .tsu = 1, |
| .select_mii = 1, |
| }; |
| |
| #elif defined(CONFIG_CPU_SUBTYPE_SH7619) |
| #define SH_ETH_RESET_DEFAULT 1 |
| static struct sh_eth_cpu_data sh_eth_my_cpu_data = { |
| .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, |
| |
| .apr = 1, |
| .mpr = 1, |
| .tpauser = 1, |
| .hw_swap = 1, |
| }; |
| #elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712) |
| #define SH_ETH_RESET_DEFAULT 1 |
| #define SH_ETH_HAS_TSU 1 |
| static struct sh_eth_cpu_data sh_eth_my_cpu_data = { |
| .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, |
| .tsu = 1, |
| }; |
| #endif |
| |
| static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd) |
| { |
| if (!cd->ecsr_value) |
| cd->ecsr_value = DEFAULT_ECSR_INIT; |
| |
| if (!cd->ecsipr_value) |
| cd->ecsipr_value = DEFAULT_ECSIPR_INIT; |
| |
| if (!cd->fcftr_value) |
| cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \ |
| DEFAULT_FIFO_F_D_RFD; |
| |
| if (!cd->fdr_value) |
| cd->fdr_value = DEFAULT_FDR_INIT; |
| |
| if (!cd->rmcr_value) |
| cd->rmcr_value = DEFAULT_RMCR_VALUE; |
| |
| if (!cd->tx_check) |
| cd->tx_check = DEFAULT_TX_CHECK; |
| |
| if (!cd->eesr_err_check) |
| cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK; |
| |
| if (!cd->tx_error_check) |
| cd->tx_error_check = DEFAULT_TX_ERROR_CHECK; |
| } |
| |
| #if defined(SH_ETH_RESET_DEFAULT) |
| /* Chip Reset */ |
| static int sh_eth_reset(struct net_device *ndev) |
| { |
| sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER, EDMR); |
| mdelay(3); |
| sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER, EDMR); |
| |
| return 0; |
| } |
| #else |
| static int sh_eth_check_reset(struct net_device *ndev) |
| { |
| int ret = 0; |
| int cnt = 100; |
| |
| while (cnt > 0) { |
| if (!(sh_eth_read(ndev, EDMR) & 0x3)) |
| break; |
| mdelay(1); |
| cnt--; |
| } |
| if (cnt < 0) { |
| printk(KERN_ERR "Device reset fail\n"); |
| ret = -ETIMEDOUT; |
| } |
| return ret; |
| } |
| #endif |
| |
| #if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARCH_SHMOBILE) |
| static void sh_eth_set_receive_align(struct sk_buff *skb) |
| { |
| int reserve; |
| |
| reserve = SH4_SKB_RX_ALIGN - ((u32)skb->data & (SH4_SKB_RX_ALIGN - 1)); |
| if (reserve) |
| skb_reserve(skb, reserve); |
| } |
| #else |
| static void sh_eth_set_receive_align(struct sk_buff *skb) |
| { |
| skb_reserve(skb, SH2_SH3_SKB_RX_ALIGN); |
| } |
| #endif |
| |
| |
| /* 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); |
| mdp->rx_skbuff = NULL; |
| |
| /* 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); |
| mdp->tx_skbuff = NULL; |
| } |
| |
| /* 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 = netdev_alloc_skb(ndev, mdp->rx_buf_sz); |
| mdp->rx_skbuff[i] = skb; |
| if (skb == NULL) |
| break; |
| dma_map_single(&ndev->dev, skb->data, mdp->rx_buf_sz, |
| DMA_FROM_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); |
| mdp->tx_ring = NULL; |
| mdp->rx_ring = NULL; |
| |
| return ret; |
| } |
| |
| static void sh_eth_free_dma_buffer(struct sh_eth_private *mdp) |
| { |
| int ringsize; |
| |
| if (mdp->rx_ring) { |
| ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE; |
| dma_free_coherent(NULL, ringsize, mdp->rx_ring, |
| mdp->rx_desc_dma); |
| mdp->rx_ring = NULL; |
| } |
| |
| if (mdp->tx_ring) { |
| ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE; |
| dma_free_coherent(NULL, ringsize, mdp->tx_ring, |
| mdp->tx_desc_dma); |
| mdp->tx_ring = NULL; |
| } |
| } |
| |
| static int sh_eth_dev_init(struct net_device *ndev) |
| { |
| int ret = 0; |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| u32 val; |
| |
| /* Soft Reset */ |
| ret = sh_eth_reset(ndev); |
| if (ret) |
| goto out; |
| |
| /* 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); |
| |
| sh_eth_write(ndev, DESC_I_RINT8 | DESC_I_RINT5 | DESC_I_TINT2, 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, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN, |
| 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); |
| |
| out: |
| 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); |
| |
| ndev->stats.tx_packets++; |
| ndev->stats.tx_bytes += txdesc->buffer_length; |
| } |
| return freeNum; |
| } |
| |
| /* Packet receive function */ |
| static int sh_eth_rx(struct net_device *ndev, u32 intr_status) |
| { |
| 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 defined(CONFIG_ARCH_R8A7740) |
| desc_status >>= 16; |
| #endif |
| |
| if (--boguscnt < 0) |
| break; |
| |
| if (!(desc_status & RDFEND)) |
| ndev->stats.rx_length_errors++; |
| |
| if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 | |
| RD_RFS5 | RD_RFS6 | RD_RFS10)) { |
| ndev->stats.rx_errors++; |
| if (desc_status & RD_RFS1) |
| ndev->stats.rx_crc_errors++; |
| if (desc_status & RD_RFS2) |
| ndev->stats.rx_frame_errors++; |
| if (desc_status & RD_RFS3) |
| ndev->stats.rx_length_errors++; |
| if (desc_status & RD_RFS4) |
| ndev->stats.rx_length_errors++; |
| if (desc_status & RD_RFS6) |
| ndev->stats.rx_missed_errors++; |
| if (desc_status & RD_RFS10) |
| ndev->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); |
| ndev->stats.rx_packets++; |
| ndev->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 = netdev_alloc_skb(ndev, mdp->rx_buf_sz); |
| mdp->rx_skbuff[entry] = skb; |
| if (skb == NULL) |
| break; /* Better luck next round. */ |
| dma_map_single(&ndev->dev, skb->data, mdp->rx_buf_sz, |
| DMA_FROM_DEVICE); |
| 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)) { |
| /* fix the values for the next receiving if RDE is set */ |
| if (intr_status & EESR_RDE) |
| mdp->cur_rx = mdp->dirty_rx = |
| (sh_eth_read(ndev, RDFAR) - |
| sh_eth_read(ndev, RDLAR)) >> 4; |
| 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) |
| ndev->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 */ |
| ndev->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 */ |
| ndev->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 */ |
| ndev->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 */ |
| ndev->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 */ |
| ndev->stats.rx_over_errors++; |
| |
| if (netif_msg_rx_err(mdp)) |
| dev_err(&ndev->dev, "Receive Descriptor Empty\n"); |
| } |
| |
| if (intr_status & EESR_RFE) { |
| /* Receive FIFO Overflow int */ |
| ndev->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 */ |
| ndev->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, intr_status); |
| } |
| |
| /* 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; |
| } |
| |
| /* 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 const 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; |
| |
| 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 */ |
| ndev->stats.tx_errors++; |
| |
| /* 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); |
| } |
| |
| /* 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); |
| |
| 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); |
| |
| /* Free all the skbuffs in the Rx queue. */ |
| sh_eth_ring_free(ndev); |
| |
| /* free DMA buffer */ |
| sh_eth_free_dma_buffer(mdp); |
| |
| 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); |
| |
| ndev->stats.tx_dropped += sh_eth_read(ndev, TROCR); |
| sh_eth_write(ndev, 0, TROCR); /* (write clear) */ |
| ndev->stats.collisions += sh_eth_read(ndev, CDCR); |
| sh_eth_write(ndev, 0, CDCR); /* (write clear) */ |
| ndev->stats.tx_carrier_errors += sh_eth_read(ndev, LCCR); |
| sh_eth_write(ndev, 0, LCCR); /* (write clear) */ |
| if (sh_eth_is_gether(mdp)) { |
| ndev->stats.tx_carrier_errors += sh_eth_read(ndev, CERCR); |
| sh_eth_write(ndev, 0, CERCR); /* (write clear) */ |
| ndev->stats.tx_carrier_errors += sh_eth_read(ndev, CEECR); |
| sh_eth_write(ndev, 0, CEECR); /* (write clear) */ |
| } else { |
| ndev->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 &ndev->stats; |
| } |
| |
| /* ioctl to device function */ |
| 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) |
| /* For TSU_POSTn. Please refer to the manual about this (strange) bitfields */ |
| static void *sh_eth_tsu_get_post_reg_offset(struct sh_eth_private *mdp, |
| int entry) |
| { |
| return sh_eth_tsu_get_offset(mdp, TSU_POST1) + (entry / 8 * 4); |
| } |
| |
| static u32 sh_eth_tsu_get_post_mask(int entry) |
| { |
| return 0x0f << (28 - ((entry % 8) * 4)); |
| } |
| |
| static u32 sh_eth_tsu_get_post_bit(struct sh_eth_private *mdp, int entry) |
| { |
| return (0x08 >> (mdp->port << 1)) << (28 - ((entry % 8) * 4)); |
| } |
| |
| static void sh_eth_tsu_enable_cam_entry_post(struct net_device *ndev, |
| int entry) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| u32 tmp; |
| void *reg_offset; |
| |
| reg_offset = sh_eth_tsu_get_post_reg_offset(mdp, entry); |
| tmp = ioread32(reg_offset); |
| iowrite32(tmp | sh_eth_tsu_get_post_bit(mdp, entry), reg_offset); |
| } |
| |
| static bool sh_eth_tsu_disable_cam_entry_post(struct net_device *ndev, |
| int entry) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| u32 post_mask, ref_mask, tmp; |
| void *reg_offset; |
| |
| reg_offset = sh_eth_tsu_get_post_reg_offset(mdp, entry); |
| post_mask = sh_eth_tsu_get_post_mask(entry); |
| ref_mask = sh_eth_tsu_get_post_bit(mdp, entry) & ~post_mask; |
| |
| tmp = ioread32(reg_offset); |
| iowrite32(tmp & ~post_mask, reg_offset); |
| |
| /* If other port enables, the function returns "true" */ |
| return tmp & ref_mask; |
| } |
| |
| static int sh_eth_tsu_busy(struct net_device *ndev) |
| { |
| int timeout = SH_ETH_TSU_TIMEOUT_MS * 100; |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| |
| while ((sh_eth_tsu_read(mdp, TSU_ADSBSY) & TSU_ADSBSY_0)) { |
| udelay(10); |
| timeout--; |
| if (timeout <= 0) { |
| dev_err(&ndev->dev, "%s: timeout\n", __func__); |
| return -ETIMEDOUT; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int sh_eth_tsu_write_entry(struct net_device *ndev, void *reg, |
| const u8 *addr) |
| { |
| u32 val; |
| |
| val = addr[0] << 24 | addr[1] << 16 | addr[2] << 8 | addr[3]; |
| iowrite32(val, reg); |
| if (sh_eth_tsu_busy(ndev) < 0) |
| return -EBUSY; |
| |
| val = addr[4] << 8 | addr[5]; |
| iowrite32(val, reg + 4); |
| if (sh_eth_tsu_busy(ndev) < 0) |
| return -EBUSY; |
| |
| return 0; |
| } |
| |
| static void sh_eth_tsu_read_entry(void *reg, u8 *addr) |
| { |
| u32 val; |
| |
| val = ioread32(reg); |
| addr[0] = (val >> 24) & 0xff; |
| addr[1] = (val >> 16) & 0xff; |
| addr[2] = (val >> 8) & 0xff; |
| addr[3] = val & 0xff; |
| val = ioread32(reg + 4); |
| addr[4] = (val >> 8) & 0xff; |
| addr[5] = val & 0xff; |
| } |
| |
| |
| static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); |
| int i; |
| u8 c_addr[ETH_ALEN]; |
| |
| for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) { |
| sh_eth_tsu_read_entry(reg_offset, c_addr); |
| if (memcmp(addr, c_addr, ETH_ALEN) == 0) |
| return i; |
| } |
| |
| return -ENOENT; |
| } |
| |
| static int sh_eth_tsu_find_empty(struct net_device *ndev) |
| { |
| u8 blank[ETH_ALEN]; |
| int entry; |
| |
| memset(blank, 0, sizeof(blank)); |
| entry = sh_eth_tsu_find_entry(ndev, blank); |
| return (entry < 0) ? -ENOMEM : entry; |
| } |
| |
| static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev, |
| int entry) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); |
| int ret; |
| u8 blank[ETH_ALEN]; |
| |
| sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) & |
| ~(1 << (31 - entry)), TSU_TEN); |
| |
| memset(blank, 0, sizeof(blank)); |
| ret = sh_eth_tsu_write_entry(ndev, reg_offset + entry * 8, blank); |
| if (ret < 0) |
| return ret; |
| return 0; |
| } |
| |
| static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); |
| int i, ret; |
| |
| if (!mdp->cd->tsu) |
| return 0; |
| |
| i = sh_eth_tsu_find_entry(ndev, addr); |
| if (i < 0) { |
| /* No entry found, create one */ |
| i = sh_eth_tsu_find_empty(ndev); |
| if (i < 0) |
| return -ENOMEM; |
| ret = sh_eth_tsu_write_entry(ndev, reg_offset + i * 8, addr); |
| if (ret < 0) |
| return ret; |
| |
| /* Enable the entry */ |
| sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) | |
| (1 << (31 - i)), TSU_TEN); |
| } |
| |
| /* Entry found or created, enable POST */ |
| sh_eth_tsu_enable_cam_entry_post(ndev, i); |
| |
| return 0; |
| } |
| |
| static int sh_eth_tsu_del_entry(struct net_device *ndev, const u8 *addr) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| int i, ret; |
| |
| if (!mdp->cd->tsu) |
| return 0; |
| |
| i = sh_eth_tsu_find_entry(ndev, addr); |
| if (i) { |
| /* Entry found */ |
| if (sh_eth_tsu_disable_cam_entry_post(ndev, i)) |
| goto done; |
| |
| /* Disable the entry if both ports was disabled */ |
| ret = sh_eth_tsu_disable_cam_entry_table(ndev, i); |
| if (ret < 0) |
| return ret; |
| } |
| done: |
| return 0; |
| } |
| |
| static int sh_eth_tsu_purge_all(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| int i, ret; |
| |
| if (unlikely(!mdp->cd->tsu)) |
| return 0; |
| |
| for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++) { |
| if (sh_eth_tsu_disable_cam_entry_post(ndev, i)) |
| continue; |
| |
| /* Disable the entry if both ports was disabled */ |
| ret = sh_eth_tsu_disable_cam_entry_table(ndev, i); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static void sh_eth_tsu_purge_mcast(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| u8 addr[ETH_ALEN]; |
| void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); |
| int i; |
| |
| if (unlikely(!mdp->cd->tsu)) |
| return; |
| |
| for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) { |
| sh_eth_tsu_read_entry(reg_offset, addr); |
| if (is_multicast_ether_addr(addr)) |
| sh_eth_tsu_del_entry(ndev, addr); |
| } |
| } |
| |
| /* Multicast reception directions set */ |
| static void sh_eth_set_multicast_list(struct net_device *ndev) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| u32 ecmr_bits; |
| int mcast_all = 0; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&mdp->lock, flags); |
| /* |
| * Initial condition is MCT = 1, PRM = 0. |
| * Depending on ndev->flags, set PRM or clear MCT |
| */ |
| ecmr_bits = (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) | ECMR_MCT; |
| |
| if (!(ndev->flags & IFF_MULTICAST)) { |
| sh_eth_tsu_purge_mcast(ndev); |
| mcast_all = 1; |
| } |
| if (ndev->flags & IFF_ALLMULTI) { |
| sh_eth_tsu_purge_mcast(ndev); |
| ecmr_bits &= ~ECMR_MCT; |
| mcast_all = 1; |
| } |
| |
| if (ndev->flags & IFF_PROMISC) { |
| sh_eth_tsu_purge_all(ndev); |
| ecmr_bits = (ecmr_bits & ~ECMR_MCT) | ECMR_PRM; |
| } else if (mdp->cd->tsu) { |
| struct netdev_hw_addr *ha; |
| netdev_for_each_mc_addr(ha, ndev) { |
| if (mcast_all && is_multicast_ether_addr(ha->addr)) |
| continue; |
| |
| if (sh_eth_tsu_add_entry(ndev, ha->addr) < 0) { |
| if (!mcast_all) { |
| sh_eth_tsu_purge_mcast(ndev); |
| ecmr_bits &= ~ECMR_MCT; |
| mcast_all = 1; |
| } |
| } |
| } |
| } else { |
| /* Normal, unicast/broadcast-only mode. */ |
| ecmr_bits = (ecmr_bits & ~ECMR_PRM) | ECMR_MCT; |
| } |
| |
| /* update the ethernet mode */ |
| sh_eth_write(ndev, ecmr_bits, ECMR); |
| |
| spin_unlock_irqrestore(&mdp->lock, flags); |
| } |
| |
| static int sh_eth_get_vtag_index(struct sh_eth_private *mdp) |
| { |
| if (!mdp->port) |
| return TSU_VTAG0; |
| else |
| return TSU_VTAG1; |
| } |
| |
| static int sh_eth_vlan_rx_add_vid(struct net_device *ndev, u16 vid) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| int vtag_reg_index = sh_eth_get_vtag_index(mdp); |
| |
| if (unlikely(!mdp->cd->tsu)) |
| return -EPERM; |
| |
| /* No filtering if vid = 0 */ |
| if (!vid) |
| return 0; |
| |
| mdp->vlan_num_ids++; |
| |
| /* |
| * The controller has one VLAN tag HW filter. So, if the filter is |
| * already enabled, the driver disables it and the filte |
| */ |
| if (mdp->vlan_num_ids > 1) { |
| /* disable VLAN filter */ |
| sh_eth_tsu_write(mdp, 0, vtag_reg_index); |
| return 0; |
| } |
| |
| sh_eth_tsu_write(mdp, TSU_VTAG_ENABLE | (vid & TSU_VTAG_VID_MASK), |
| vtag_reg_index); |
| |
| return 0; |
| } |
| |
| static int sh_eth_vlan_rx_kill_vid(struct net_device *ndev, u16 vid) |
| { |
| struct sh_eth_private *mdp = netdev_priv(ndev); |
| int vtag_reg_index = sh_eth_get_vtag_index(mdp); |
| |
| if (unlikely(!mdp->cd->tsu)) |
| return -EPERM; |
| |
| /* No filtering if vid = 0 */ |
| if (!vid) |
| return 0; |
| |
| mdp->vlan_num_ids--; |
| sh_eth_tsu_write(mdp, 0, vtag_reg_index); |
| |
| return 0; |
| } |
| #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, "%s-%x", |
| mdp->pdev->name, 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, |
| .ndo_vlan_rx_add_vid = sh_eth_vlan_rx_add_vid, |
| .ndo_vlan_rx_kill_vid = sh_eth_vlan_rx_kill_vid, |
| #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) { |
| 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; |
| |
| /* read and set MAC address */ |
| read_mac_address(ndev, pd->mac_addr); |
| |
| /* ioremap the TSU registers */ |
| 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)); |
| mdp->port = devno % 2; |
| ndev->features = NETIF_F_HW_VLAN_FILTER; |
| } |
| |
| /* initialize first or needed device */ |
| if (!devno || pd->needs_init) { |
| 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); |
| |
| if (mdp->cd->tsu) |
| 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, |
| }, |
| }; |
| |
| module_platform_driver(sh_eth_driver); |
| |
| MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda"); |
| MODULE_DESCRIPTION("Renesas SuperH Ethernet driver"); |
| MODULE_LICENSE("GPL v2"); |