1 /* SuperH Ethernet device driver
3 * Copyright (C) 2006-2012 Nobuhiro Iwamatsu
4 * Copyright (C) 2008-2014 Renesas Solutions Corp.
5 * Copyright (C) 2013-2014 Cogent Embedded, Inc.
6 * Copyright (C) 2014 Codethink Limited
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2, as published by the Free Software Foundation.
12 * This program is distributed in the hope it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * The full GNU General Public License is included in this distribution in
18 * the file called "COPYING".
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/spinlock.h>
24 #include <linux/interrupt.h>
25 #include <linux/dma-mapping.h>
26 #include <linux/etherdevice.h>
27 #include <linux/delay.h>
28 #include <linux/platform_device.h>
29 #include <linux/mdio-bitbang.h>
30 #include <linux/netdevice.h>
32 #include <linux/of_device.h>
33 #include <linux/of_irq.h>
34 #include <linux/of_net.h>
35 #include <linux/phy.h>
36 #include <linux/cache.h>
38 #include <linux/pm_runtime.h>
39 #include <linux/slab.h>
40 #include <linux/ethtool.h>
41 #include <linux/if_vlan.h>
42 #include <linux/clk.h>
43 #include <linux/sh_eth.h>
44 #include <linux/of_mdio.h>
48 #define SH_ETH_DEF_MSG_ENABLE \
54 static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
108 [TSU_CTRST] = 0x0004,
109 [TSU_FWEN0] = 0x0010,
110 [TSU_FWEN1] = 0x0014,
112 [TSU_BSYSL0] = 0x0020,
113 [TSU_BSYSL1] = 0x0024,
114 [TSU_PRISL0] = 0x0028,
115 [TSU_PRISL1] = 0x002c,
116 [TSU_FWSL0] = 0x0030,
117 [TSU_FWSL1] = 0x0034,
118 [TSU_FWSLC] = 0x0038,
119 [TSU_QTAG0] = 0x0040,
120 [TSU_QTAG1] = 0x0044,
122 [TSU_FWINMK] = 0x0054,
123 [TSU_ADQT0] = 0x0048,
124 [TSU_ADQT1] = 0x004c,
125 [TSU_VTAG0] = 0x0058,
126 [TSU_VTAG1] = 0x005c,
127 [TSU_ADSBSY] = 0x0060,
129 [TSU_POST1] = 0x0070,
130 [TSU_POST2] = 0x0074,
131 [TSU_POST3] = 0x0078,
132 [TSU_POST4] = 0x007c,
133 [TSU_ADRH0] = 0x0100,
134 [TSU_ADRL0] = 0x0104,
135 [TSU_ADRH31] = 0x01f8,
136 [TSU_ADRL31] = 0x01fc,
152 static const u16 sh_eth_offset_fast_rz[SH_ETH_MAX_REGISTER_OFFSET] = {
196 [TSU_CTRST] = 0x0004,
197 [TSU_VTAG0] = 0x0058,
198 [TSU_ADSBSY] = 0x0060,
200 [TSU_ADRH0] = 0x0100,
201 [TSU_ADRL0] = 0x0104,
202 [TSU_ADRH31] = 0x01f8,
203 [TSU_ADRL31] = 0x01fc,
211 static const u16 sh_eth_offset_fast_rcar[SH_ETH_MAX_REGISTER_OFFSET] = {
257 static const u16 sh_eth_offset_fast_sh4[SH_ETH_MAX_REGISTER_OFFSET] = {
309 static const u16 sh_eth_offset_fast_sh3_sh2[SH_ETH_MAX_REGISTER_OFFSET] = {
356 [TSU_CTRST] = 0x0004,
357 [TSU_FWEN0] = 0x0010,
358 [TSU_FWEN1] = 0x0014,
360 [TSU_BSYSL0] = 0x0020,
361 [TSU_BSYSL1] = 0x0024,
362 [TSU_PRISL0] = 0x0028,
363 [TSU_PRISL1] = 0x002c,
364 [TSU_FWSL0] = 0x0030,
365 [TSU_FWSL1] = 0x0034,
366 [TSU_FWSLC] = 0x0038,
367 [TSU_QTAGM0] = 0x0040,
368 [TSU_QTAGM1] = 0x0044,
369 [TSU_ADQT0] = 0x0048,
370 [TSU_ADQT1] = 0x004c,
372 [TSU_FWINMK] = 0x0054,
373 [TSU_ADSBSY] = 0x0060,
375 [TSU_POST1] = 0x0070,
376 [TSU_POST2] = 0x0074,
377 [TSU_POST3] = 0x0078,
378 [TSU_POST4] = 0x007c,
393 [TSU_ADRH0] = 0x0100,
394 [TSU_ADRL0] = 0x0104,
395 [TSU_ADRL31] = 0x01fc,
398 static bool sh_eth_is_gether(struct sh_eth_private *mdp)
400 return mdp->reg_offset == sh_eth_offset_gigabit;
403 static bool sh_eth_is_rz_fast_ether(struct sh_eth_private *mdp)
405 return mdp->reg_offset == sh_eth_offset_fast_rz;
408 static void sh_eth_select_mii(struct net_device *ndev)
411 struct sh_eth_private *mdp = netdev_priv(ndev);
413 switch (mdp->phy_interface) {
414 case PHY_INTERFACE_MODE_GMII:
417 case PHY_INTERFACE_MODE_MII:
420 case PHY_INTERFACE_MODE_RMII:
425 "PHY interface mode was not setup. Set to MII.\n");
430 sh_eth_write(ndev, value, RMII_MII);
433 static void sh_eth_set_duplex(struct net_device *ndev)
435 struct sh_eth_private *mdp = netdev_priv(ndev);
437 if (mdp->duplex) /* Full */
438 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
440 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
443 /* There is CPU dependent code */
444 static void sh_eth_set_rate_r8a777x(struct net_device *ndev)
446 struct sh_eth_private *mdp = netdev_priv(ndev);
448 switch (mdp->speed) {
449 case 10: /* 10BASE */
450 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_ELB, ECMR);
452 case 100:/* 100BASE */
453 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_ELB, ECMR);
461 static struct sh_eth_cpu_data r8a777x_data = {
462 .set_duplex = sh_eth_set_duplex,
463 .set_rate = sh_eth_set_rate_r8a777x,
465 .register_type = SH_ETH_REG_FAST_RCAR,
467 .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
468 .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
469 .eesipr_value = 0x01ff009f,
471 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
472 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
473 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE |
483 static struct sh_eth_cpu_data r8a779x_data = {
484 .set_duplex = sh_eth_set_duplex,
485 .set_rate = sh_eth_set_rate_r8a777x,
487 .register_type = SH_ETH_REG_FAST_RCAR,
489 .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
490 .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
491 .eesipr_value = 0x01ff009f,
493 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
494 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
495 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE |
506 static void sh_eth_set_rate_sh7724(struct net_device *ndev)
508 struct sh_eth_private *mdp = netdev_priv(ndev);
510 switch (mdp->speed) {
511 case 10: /* 10BASE */
512 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_RTM, ECMR);
514 case 100:/* 100BASE */
515 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_RTM, ECMR);
523 static struct sh_eth_cpu_data sh7724_data = {
524 .set_duplex = sh_eth_set_duplex,
525 .set_rate = sh_eth_set_rate_sh7724,
527 .register_type = SH_ETH_REG_FAST_SH4,
529 .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
530 .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
531 .eesipr_value = 0x01ff009f,
533 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
534 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
535 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE |
543 .rpadir_value = 0x00020000, /* NET_IP_ALIGN assumed to be 2 */
546 static void sh_eth_set_rate_sh7757(struct net_device *ndev)
548 struct sh_eth_private *mdp = netdev_priv(ndev);
550 switch (mdp->speed) {
551 case 10: /* 10BASE */
552 sh_eth_write(ndev, 0, RTRATE);
554 case 100:/* 100BASE */
555 sh_eth_write(ndev, 1, RTRATE);
563 static struct sh_eth_cpu_data sh7757_data = {
564 .set_duplex = sh_eth_set_duplex,
565 .set_rate = sh_eth_set_rate_sh7757,
567 .register_type = SH_ETH_REG_FAST_SH4,
569 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
571 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
572 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
573 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE |
576 .irq_flags = IRQF_SHARED,
583 .rpadir_value = 2 << 16,
586 #define SH_GIGA_ETH_BASE 0xfee00000UL
587 #define GIGA_MALR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8)
588 #define GIGA_MAHR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0)
589 static void sh_eth_chip_reset_giga(struct net_device *ndev)
592 unsigned long mahr[2], malr[2];
594 /* save MAHR and MALR */
595 for (i = 0; i < 2; i++) {
596 malr[i] = ioread32((void *)GIGA_MALR(i));
597 mahr[i] = ioread32((void *)GIGA_MAHR(i));
601 iowrite32(ARSTR_ARSTR, (void *)(SH_GIGA_ETH_BASE + 0x1800));
604 /* restore MAHR and MALR */
605 for (i = 0; i < 2; i++) {
606 iowrite32(malr[i], (void *)GIGA_MALR(i));
607 iowrite32(mahr[i], (void *)GIGA_MAHR(i));
611 static void sh_eth_set_rate_giga(struct net_device *ndev)
613 struct sh_eth_private *mdp = netdev_priv(ndev);
615 switch (mdp->speed) {
616 case 10: /* 10BASE */
617 sh_eth_write(ndev, 0x00000000, GECMR);
619 case 100:/* 100BASE */
620 sh_eth_write(ndev, 0x00000010, GECMR);
622 case 1000: /* 1000BASE */
623 sh_eth_write(ndev, 0x00000020, GECMR);
630 /* SH7757(GETHERC) */
631 static struct sh_eth_cpu_data sh7757_data_giga = {
632 .chip_reset = sh_eth_chip_reset_giga,
633 .set_duplex = sh_eth_set_duplex,
634 .set_rate = sh_eth_set_rate_giga,
636 .register_type = SH_ETH_REG_GIGABIT,
638 .ecsr_value = ECSR_ICD | ECSR_MPD,
639 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
640 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
642 .tx_check = EESR_TC1 | EESR_FTC,
643 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
644 EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
646 .fdr_value = 0x0000072f,
648 .irq_flags = IRQF_SHARED,
655 .rpadir_value = 2 << 16,
661 static void sh_eth_chip_reset(struct net_device *ndev)
663 struct sh_eth_private *mdp = netdev_priv(ndev);
666 sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
670 static void sh_eth_set_rate_gether(struct net_device *ndev)
672 struct sh_eth_private *mdp = netdev_priv(ndev);
674 switch (mdp->speed) {
675 case 10: /* 10BASE */
676 sh_eth_write(ndev, GECMR_10, GECMR);
678 case 100:/* 100BASE */
679 sh_eth_write(ndev, GECMR_100, GECMR);
681 case 1000: /* 1000BASE */
682 sh_eth_write(ndev, GECMR_1000, GECMR);
690 static struct sh_eth_cpu_data sh7734_data = {
691 .chip_reset = sh_eth_chip_reset,
692 .set_duplex = sh_eth_set_duplex,
693 .set_rate = sh_eth_set_rate_gether,
695 .register_type = SH_ETH_REG_GIGABIT,
697 .ecsr_value = ECSR_ICD | ECSR_MPD,
698 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
699 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
701 .tx_check = EESR_TC1 | EESR_FTC,
702 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
703 EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
719 static struct sh_eth_cpu_data sh7763_data = {
720 .chip_reset = sh_eth_chip_reset,
721 .set_duplex = sh_eth_set_duplex,
722 .set_rate = sh_eth_set_rate_gether,
724 .register_type = SH_ETH_REG_GIGABIT,
726 .ecsr_value = ECSR_ICD | ECSR_MPD,
727 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
728 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
730 .tx_check = EESR_TC1 | EESR_FTC,
731 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
732 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE |
743 .irq_flags = IRQF_SHARED,
746 static void sh_eth_chip_reset_r8a7740(struct net_device *ndev)
748 struct sh_eth_private *mdp = netdev_priv(ndev);
751 sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
754 sh_eth_select_mii(ndev);
758 static struct sh_eth_cpu_data r8a7740_data = {
759 .chip_reset = sh_eth_chip_reset_r8a7740,
760 .set_duplex = sh_eth_set_duplex,
761 .set_rate = sh_eth_set_rate_gether,
763 .register_type = SH_ETH_REG_GIGABIT,
765 .ecsr_value = ECSR_ICD | ECSR_MPD,
766 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
767 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
769 .tx_check = EESR_TC1 | EESR_FTC,
770 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
771 EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
773 .fdr_value = 0x0000070f,
781 .rpadir_value = 2 << 16,
790 static struct sh_eth_cpu_data r7s72100_data = {
791 .chip_reset = sh_eth_chip_reset,
792 .set_duplex = sh_eth_set_duplex,
794 .register_type = SH_ETH_REG_FAST_RZ,
796 .ecsr_value = ECSR_ICD,
797 .ecsipr_value = ECSIPR_ICDIP,
798 .eesipr_value = 0xff7f009f,
800 .tx_check = EESR_TC1 | EESR_FTC,
801 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
802 EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
804 .fdr_value = 0x0000070f,
812 .rpadir_value = 2 << 16,
820 static struct sh_eth_cpu_data sh7619_data = {
821 .register_type = SH_ETH_REG_FAST_SH3_SH2,
823 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
831 static struct sh_eth_cpu_data sh771x_data = {
832 .register_type = SH_ETH_REG_FAST_SH3_SH2,
834 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
838 static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
841 cd->ecsr_value = DEFAULT_ECSR_INIT;
843 if (!cd->ecsipr_value)
844 cd->ecsipr_value = DEFAULT_ECSIPR_INIT;
846 if (!cd->fcftr_value)
847 cd->fcftr_value = DEFAULT_FIFO_F_D_RFF |
848 DEFAULT_FIFO_F_D_RFD;
851 cd->fdr_value = DEFAULT_FDR_INIT;
854 cd->tx_check = DEFAULT_TX_CHECK;
856 if (!cd->eesr_err_check)
857 cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK;
860 static int sh_eth_check_reset(struct net_device *ndev)
866 if (!(sh_eth_read(ndev, EDMR) & 0x3))
872 netdev_err(ndev, "Device reset failed\n");
878 static int sh_eth_reset(struct net_device *ndev)
880 struct sh_eth_private *mdp = netdev_priv(ndev);
883 if (sh_eth_is_gether(mdp) || sh_eth_is_rz_fast_ether(mdp)) {
884 sh_eth_write(ndev, EDSR_ENALL, EDSR);
885 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER,
888 ret = sh_eth_check_reset(ndev);
893 sh_eth_write(ndev, 0x0, TDLAR);
894 sh_eth_write(ndev, 0x0, TDFAR);
895 sh_eth_write(ndev, 0x0, TDFXR);
896 sh_eth_write(ndev, 0x0, TDFFR);
897 sh_eth_write(ndev, 0x0, RDLAR);
898 sh_eth_write(ndev, 0x0, RDFAR);
899 sh_eth_write(ndev, 0x0, RDFXR);
900 sh_eth_write(ndev, 0x0, RDFFR);
902 /* Reset HW CRC register */
904 sh_eth_write(ndev, 0x0, CSMR);
906 /* Select MII mode */
907 if (mdp->cd->select_mii)
908 sh_eth_select_mii(ndev);
910 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER,
913 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER,
920 static void sh_eth_set_receive_align(struct sk_buff *skb)
922 uintptr_t reserve = (uintptr_t)skb->data & (SH_ETH_RX_ALIGN - 1);
925 skb_reserve(skb, SH_ETH_RX_ALIGN - reserve);
929 /* CPU <-> EDMAC endian convert */
930 static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x)
932 switch (mdp->edmac_endian) {
933 case EDMAC_LITTLE_ENDIAN:
934 return cpu_to_le32(x);
935 case EDMAC_BIG_ENDIAN:
936 return cpu_to_be32(x);
941 static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x)
943 switch (mdp->edmac_endian) {
944 case EDMAC_LITTLE_ENDIAN:
945 return le32_to_cpu(x);
946 case EDMAC_BIG_ENDIAN:
947 return be32_to_cpu(x);
952 /* Program the hardware MAC address from dev->dev_addr. */
953 static void update_mac_address(struct net_device *ndev)
956 (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
957 (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
959 (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
962 /* Get MAC address from SuperH MAC address register
964 * SuperH's Ethernet device doesn't have 'ROM' to MAC address.
965 * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
966 * When you want use this device, you must set MAC address in bootloader.
969 static void read_mac_address(struct net_device *ndev, unsigned char *mac)
971 if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
972 memcpy(ndev->dev_addr, mac, ETH_ALEN);
974 ndev->dev_addr[0] = (sh_eth_read(ndev, MAHR) >> 24);
975 ndev->dev_addr[1] = (sh_eth_read(ndev, MAHR) >> 16) & 0xFF;
976 ndev->dev_addr[2] = (sh_eth_read(ndev, MAHR) >> 8) & 0xFF;
977 ndev->dev_addr[3] = (sh_eth_read(ndev, MAHR) & 0xFF);
978 ndev->dev_addr[4] = (sh_eth_read(ndev, MALR) >> 8) & 0xFF;
979 ndev->dev_addr[5] = (sh_eth_read(ndev, MALR) & 0xFF);
983 static unsigned long sh_eth_get_edtrr_trns(struct sh_eth_private *mdp)
985 if (sh_eth_is_gether(mdp) || sh_eth_is_rz_fast_ether(mdp))
986 return EDTRR_TRNS_GETHER;
988 return EDTRR_TRNS_ETHER;
992 void (*set_gate)(void *addr);
993 struct mdiobb_ctrl ctrl;
995 u32 mmd_msk;/* MMD */
1002 static void bb_set(void *addr, u32 msk)
1004 iowrite32(ioread32(addr) | msk, addr);
1008 static void bb_clr(void *addr, u32 msk)
1010 iowrite32((ioread32(addr) & ~msk), addr);
1014 static int bb_read(void *addr, u32 msk)
1016 return (ioread32(addr) & msk) != 0;
1019 /* Data I/O pin control */
1020 static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
1022 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
1024 if (bitbang->set_gate)
1025 bitbang->set_gate(bitbang->addr);
1028 bb_set(bitbang->addr, bitbang->mmd_msk);
1030 bb_clr(bitbang->addr, bitbang->mmd_msk);
1034 static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
1036 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
1038 if (bitbang->set_gate)
1039 bitbang->set_gate(bitbang->addr);
1042 bb_set(bitbang->addr, bitbang->mdo_msk);
1044 bb_clr(bitbang->addr, bitbang->mdo_msk);
1048 static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
1050 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
1052 if (bitbang->set_gate)
1053 bitbang->set_gate(bitbang->addr);
1055 return bb_read(bitbang->addr, bitbang->mdi_msk);
1058 /* MDC pin control */
1059 static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
1061 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
1063 if (bitbang->set_gate)
1064 bitbang->set_gate(bitbang->addr);
1067 bb_set(bitbang->addr, bitbang->mdc_msk);
1069 bb_clr(bitbang->addr, bitbang->mdc_msk);
1072 /* mdio bus control struct */
1073 static struct mdiobb_ops bb_ops = {
1074 .owner = THIS_MODULE,
1075 .set_mdc = sh_mdc_ctrl,
1076 .set_mdio_dir = sh_mmd_ctrl,
1077 .set_mdio_data = sh_set_mdio,
1078 .get_mdio_data = sh_get_mdio,
1081 /* free skb and descriptor buffer */
1082 static void sh_eth_ring_free(struct net_device *ndev)
1084 struct sh_eth_private *mdp = netdev_priv(ndev);
1087 /* Free Rx skb ringbuffer */
1088 if (mdp->rx_skbuff) {
1089 for (i = 0; i < mdp->num_rx_ring; i++)
1090 dev_kfree_skb(mdp->rx_skbuff[i]);
1092 kfree(mdp->rx_skbuff);
1093 mdp->rx_skbuff = NULL;
1095 /* Free Tx skb ringbuffer */
1096 if (mdp->tx_skbuff) {
1097 for (i = 0; i < mdp->num_tx_ring; i++)
1098 dev_kfree_skb(mdp->tx_skbuff[i]);
1100 kfree(mdp->tx_skbuff);
1101 mdp->tx_skbuff = NULL;
1104 /* format skb and descriptor buffer */
1105 static void sh_eth_ring_format(struct net_device *ndev)
1107 struct sh_eth_private *mdp = netdev_priv(ndev);
1109 struct sk_buff *skb;
1110 struct sh_eth_rxdesc *rxdesc = NULL;
1111 struct sh_eth_txdesc *txdesc = NULL;
1112 int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring;
1113 int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring;
1114 int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN - 1;
1121 memset(mdp->rx_ring, 0, rx_ringsize);
1123 /* build Rx ring buffer */
1124 for (i = 0; i < mdp->num_rx_ring; i++) {
1126 mdp->rx_skbuff[i] = NULL;
1127 skb = netdev_alloc_skb(ndev, skbuff_size);
1128 mdp->rx_skbuff[i] = skb;
1131 sh_eth_set_receive_align(skb);
1134 rxdesc = &mdp->rx_ring[i];
1135 /* The size of the buffer is a multiple of 16 bytes. */
1136 rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
1137 dma_map_single(&ndev->dev, skb->data, rxdesc->buffer_length,
1139 rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
1140 rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP);
1142 /* Rx descriptor address set */
1144 sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR);
1145 if (sh_eth_is_gether(mdp) ||
1146 sh_eth_is_rz_fast_ether(mdp))
1147 sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR);
1151 mdp->dirty_rx = (u32) (i - mdp->num_rx_ring);
1153 /* Mark the last entry as wrapping the ring. */
1154 rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL);
1156 memset(mdp->tx_ring, 0, tx_ringsize);
1158 /* build Tx ring buffer */
1159 for (i = 0; i < mdp->num_tx_ring; i++) {
1160 mdp->tx_skbuff[i] = NULL;
1161 txdesc = &mdp->tx_ring[i];
1162 txdesc->status = cpu_to_edmac(mdp, TD_TFP);
1163 txdesc->buffer_length = 0;
1165 /* Tx descriptor address set */
1166 sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR);
1167 if (sh_eth_is_gether(mdp) ||
1168 sh_eth_is_rz_fast_ether(mdp))
1169 sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR);
1173 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
1176 /* Get skb and descriptor buffer */
1177 static int sh_eth_ring_init(struct net_device *ndev)
1179 struct sh_eth_private *mdp = netdev_priv(ndev);
1180 int rx_ringsize, tx_ringsize, ret = 0;
1182 /* +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
1183 * card needs room to do 8 byte alignment, +2 so we can reserve
1184 * the first 2 bytes, and +16 gets room for the status word from the
1187 mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
1188 (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
1189 if (mdp->cd->rpadir)
1190 mdp->rx_buf_sz += NET_IP_ALIGN;
1192 /* Allocate RX and TX skb rings */
1193 mdp->rx_skbuff = kmalloc_array(mdp->num_rx_ring,
1194 sizeof(*mdp->rx_skbuff), GFP_KERNEL);
1195 if (!mdp->rx_skbuff) {
1200 mdp->tx_skbuff = kmalloc_array(mdp->num_tx_ring,
1201 sizeof(*mdp->tx_skbuff), GFP_KERNEL);
1202 if (!mdp->tx_skbuff) {
1207 /* Allocate all Rx descriptors. */
1208 rx_ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
1209 mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma,
1211 if (!mdp->rx_ring) {
1213 goto desc_ring_free;
1218 /* Allocate all Tx descriptors. */
1219 tx_ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
1220 mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma,
1222 if (!mdp->tx_ring) {
1224 goto desc_ring_free;
1229 /* free DMA buffer */
1230 dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma);
1233 /* Free Rx and Tx skb ring buffer */
1234 sh_eth_ring_free(ndev);
1235 mdp->tx_ring = NULL;
1236 mdp->rx_ring = NULL;
1241 static void sh_eth_free_dma_buffer(struct sh_eth_private *mdp)
1246 ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
1247 dma_free_coherent(NULL, ringsize, mdp->rx_ring,
1249 mdp->rx_ring = NULL;
1253 ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
1254 dma_free_coherent(NULL, ringsize, mdp->tx_ring,
1256 mdp->tx_ring = NULL;
1260 static int sh_eth_dev_init(struct net_device *ndev, bool start)
1263 struct sh_eth_private *mdp = netdev_priv(ndev);
1267 ret = sh_eth_reset(ndev);
1271 if (mdp->cd->rmiimode)
1272 sh_eth_write(ndev, 0x1, RMIIMODE);
1274 /* Descriptor format */
1275 sh_eth_ring_format(ndev);
1276 if (mdp->cd->rpadir)
1277 sh_eth_write(ndev, mdp->cd->rpadir_value, RPADIR);
1279 /* all sh_eth int mask */
1280 sh_eth_write(ndev, 0, EESIPR);
1282 #if defined(__LITTLE_ENDIAN)
1283 if (mdp->cd->hw_swap)
1284 sh_eth_write(ndev, EDMR_EL, EDMR);
1287 sh_eth_write(ndev, 0, EDMR);
1290 sh_eth_write(ndev, mdp->cd->fdr_value, FDR);
1291 sh_eth_write(ndev, 0, TFTR);
1293 /* Frame recv control (enable multiple-packets per rx irq) */
1294 sh_eth_write(ndev, RMCR_RNC, RMCR);
1296 sh_eth_write(ndev, DESC_I_RINT8 | DESC_I_RINT5 | DESC_I_TINT2, TRSCER);
1299 sh_eth_write(ndev, 0x800, BCULR); /* Burst sycle set */
1301 sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR);
1303 if (!mdp->cd->no_trimd)
1304 sh_eth_write(ndev, 0, TRIMD);
1306 /* Recv frame limit set register */
1307 sh_eth_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN,
1310 sh_eth_write(ndev, sh_eth_read(ndev, EESR), EESR);
1312 sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
1314 /* PAUSE Prohibition */
1315 val = (sh_eth_read(ndev, ECMR) & ECMR_DM) |
1316 ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE;
1318 sh_eth_write(ndev, val, ECMR);
1320 if (mdp->cd->set_rate)
1321 mdp->cd->set_rate(ndev);
1323 /* E-MAC Status Register clear */
1324 sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR);
1326 /* E-MAC Interrupt Enable register */
1328 sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR);
1330 /* Set MAC address */
1331 update_mac_address(ndev);
1335 sh_eth_write(ndev, APR_AP, APR);
1337 sh_eth_write(ndev, MPR_MP, MPR);
1338 if (mdp->cd->tpauser)
1339 sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER);
1342 /* Setting the Rx mode will start the Rx process. */
1343 sh_eth_write(ndev, EDRRR_R, EDRRR);
1345 netif_start_queue(ndev);
1351 /* free Tx skb function */
1352 static int sh_eth_txfree(struct net_device *ndev)
1354 struct sh_eth_private *mdp = netdev_priv(ndev);
1355 struct sh_eth_txdesc *txdesc;
1359 for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
1360 entry = mdp->dirty_tx % mdp->num_tx_ring;
1361 txdesc = &mdp->tx_ring[entry];
1362 if (txdesc->status & cpu_to_edmac(mdp, TD_TACT))
1364 /* Free the original skb. */
1365 if (mdp->tx_skbuff[entry]) {
1366 dma_unmap_single(&ndev->dev, txdesc->addr,
1367 txdesc->buffer_length, DMA_TO_DEVICE);
1368 dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
1369 mdp->tx_skbuff[entry] = NULL;
1372 txdesc->status = cpu_to_edmac(mdp, TD_TFP);
1373 if (entry >= mdp->num_tx_ring - 1)
1374 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
1376 ndev->stats.tx_packets++;
1377 ndev->stats.tx_bytes += txdesc->buffer_length;
1382 /* Packet receive function */
1383 static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
1385 struct sh_eth_private *mdp = netdev_priv(ndev);
1386 struct sh_eth_rxdesc *rxdesc;
1388 int entry = mdp->cur_rx % mdp->num_rx_ring;
1389 int boguscnt = (mdp->dirty_rx + mdp->num_rx_ring) - mdp->cur_rx;
1390 struct sk_buff *skb;
1393 int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN - 1;
1395 rxdesc = &mdp->rx_ring[entry];
1396 while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) {
1397 desc_status = edmac_to_cpu(mdp, rxdesc->status);
1398 pkt_len = rxdesc->frame_length;
1408 if (!(desc_status & RDFEND))
1409 ndev->stats.rx_length_errors++;
1411 /* In case of almost all GETHER/ETHERs, the Receive Frame State
1412 * (RFS) bits in the Receive Descriptor 0 are from bit 9 to
1413 * bit 0. However, in case of the R8A7740, R8A779x, and
1414 * R7S72100 the RFS bits are from bit 25 to bit 16. So, the
1415 * driver needs right shifting by 16.
1417 if (mdp->cd->shift_rd0)
1420 if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
1421 RD_RFS5 | RD_RFS6 | RD_RFS10)) {
1422 ndev->stats.rx_errors++;
1423 if (desc_status & RD_RFS1)
1424 ndev->stats.rx_crc_errors++;
1425 if (desc_status & RD_RFS2)
1426 ndev->stats.rx_frame_errors++;
1427 if (desc_status & RD_RFS3)
1428 ndev->stats.rx_length_errors++;
1429 if (desc_status & RD_RFS4)
1430 ndev->stats.rx_length_errors++;
1431 if (desc_status & RD_RFS6)
1432 ndev->stats.rx_missed_errors++;
1433 if (desc_status & RD_RFS10)
1434 ndev->stats.rx_over_errors++;
1436 if (!mdp->cd->hw_swap)
1438 phys_to_virt(ALIGN(rxdesc->addr, 4)),
1440 skb = mdp->rx_skbuff[entry];
1441 mdp->rx_skbuff[entry] = NULL;
1442 if (mdp->cd->rpadir)
1443 skb_reserve(skb, NET_IP_ALIGN);
1444 dma_sync_single_for_cpu(&ndev->dev, rxdesc->addr,
1445 ALIGN(mdp->rx_buf_sz, 16),
1447 skb_put(skb, pkt_len);
1448 skb->protocol = eth_type_trans(skb, ndev);
1449 netif_receive_skb(skb);
1450 ndev->stats.rx_packets++;
1451 ndev->stats.rx_bytes += pkt_len;
1453 entry = (++mdp->cur_rx) % mdp->num_rx_ring;
1454 rxdesc = &mdp->rx_ring[entry];
1457 /* Refill the Rx ring buffers. */
1458 for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
1459 entry = mdp->dirty_rx % mdp->num_rx_ring;
1460 rxdesc = &mdp->rx_ring[entry];
1461 /* The size of the buffer is 16 byte boundary. */
1462 rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
1464 if (mdp->rx_skbuff[entry] == NULL) {
1465 skb = netdev_alloc_skb(ndev, skbuff_size);
1466 mdp->rx_skbuff[entry] = skb;
1468 break; /* Better luck next round. */
1469 sh_eth_set_receive_align(skb);
1470 dma_map_single(&ndev->dev, skb->data,
1471 rxdesc->buffer_length, DMA_FROM_DEVICE);
1473 skb_checksum_none_assert(skb);
1474 rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
1476 if (entry >= mdp->num_rx_ring - 1)
1478 cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL);
1481 cpu_to_edmac(mdp, RD_RACT | RD_RFP);
1484 /* Restart Rx engine if stopped. */
1485 /* If we don't need to check status, don't. -KDU */
1486 if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R)) {
1487 /* fix the values for the next receiving if RDE is set */
1488 if (intr_status & EESR_RDE) {
1489 u32 count = (sh_eth_read(ndev, RDFAR) -
1490 sh_eth_read(ndev, RDLAR)) >> 4;
1492 mdp->cur_rx = count;
1493 mdp->dirty_rx = count;
1495 sh_eth_write(ndev, EDRRR_R, EDRRR);
1501 static void sh_eth_rcv_snd_disable(struct net_device *ndev)
1503 /* disable tx and rx */
1504 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) &
1505 ~(ECMR_RE | ECMR_TE), ECMR);
1508 static void sh_eth_rcv_snd_enable(struct net_device *ndev)
1510 /* enable tx and rx */
1511 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) |
1512 (ECMR_RE | ECMR_TE), ECMR);
1515 /* error control function */
1516 static void sh_eth_error(struct net_device *ndev, int intr_status)
1518 struct sh_eth_private *mdp = netdev_priv(ndev);
1523 if (intr_status & EESR_ECI) {
1524 felic_stat = sh_eth_read(ndev, ECSR);
1525 sh_eth_write(ndev, felic_stat, ECSR); /* clear int */
1526 if (felic_stat & ECSR_ICD)
1527 ndev->stats.tx_carrier_errors++;
1528 if (felic_stat & ECSR_LCHNG) {
1530 if (mdp->cd->no_psr || mdp->no_ether_link) {
1533 link_stat = (sh_eth_read(ndev, PSR));
1534 if (mdp->ether_link_active_low)
1535 link_stat = ~link_stat;
1537 if (!(link_stat & PHY_ST_LINK)) {
1538 sh_eth_rcv_snd_disable(ndev);
1541 sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) &
1542 ~DMAC_M_ECI, EESIPR);
1544 sh_eth_write(ndev, sh_eth_read(ndev, ECSR),
1546 sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) |
1547 DMAC_M_ECI, EESIPR);
1548 /* enable tx and rx */
1549 sh_eth_rcv_snd_enable(ndev);
1555 if (intr_status & EESR_TWB) {
1556 /* Unused write back interrupt */
1557 if (intr_status & EESR_TABT) { /* Transmit Abort int */
1558 ndev->stats.tx_aborted_errors++;
1559 netif_err(mdp, tx_err, ndev, "Transmit Abort\n");
1563 if (intr_status & EESR_RABT) {
1564 /* Receive Abort int */
1565 if (intr_status & EESR_RFRMER) {
1566 /* Receive Frame Overflow int */
1567 ndev->stats.rx_frame_errors++;
1568 netif_err(mdp, rx_err, ndev, "Receive Abort\n");
1572 if (intr_status & EESR_TDE) {
1573 /* Transmit Descriptor Empty int */
1574 ndev->stats.tx_fifo_errors++;
1575 netif_err(mdp, tx_err, ndev, "Transmit Descriptor Empty\n");
1578 if (intr_status & EESR_TFE) {
1579 /* FIFO under flow */
1580 ndev->stats.tx_fifo_errors++;
1581 netif_err(mdp, tx_err, ndev, "Transmit FIFO Under flow\n");
1584 if (intr_status & EESR_RDE) {
1585 /* Receive Descriptor Empty int */
1586 ndev->stats.rx_over_errors++;
1587 netif_err(mdp, rx_err, ndev, "Receive Descriptor Empty\n");
1590 if (intr_status & EESR_RFE) {
1591 /* Receive FIFO Overflow int */
1592 ndev->stats.rx_fifo_errors++;
1593 netif_err(mdp, rx_err, ndev, "Receive FIFO Overflow\n");
1596 if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) {
1598 ndev->stats.tx_fifo_errors++;
1599 netif_err(mdp, tx_err, ndev, "Address Error\n");
1602 mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE;
1603 if (mdp->cd->no_ade)
1605 if (intr_status & mask) {
1607 u32 edtrr = sh_eth_read(ndev, EDTRR);
1610 netdev_err(ndev, "TX error. status=%8.8x cur_tx=%8.8x dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
1611 intr_status, mdp->cur_tx, mdp->dirty_tx,
1612 (u32)ndev->state, edtrr);
1613 /* dirty buffer free */
1614 sh_eth_txfree(ndev);
1617 if (edtrr ^ sh_eth_get_edtrr_trns(mdp)) {
1619 sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
1622 netif_wake_queue(ndev);
1626 static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
1628 struct net_device *ndev = netdev;
1629 struct sh_eth_private *mdp = netdev_priv(ndev);
1630 struct sh_eth_cpu_data *cd = mdp->cd;
1631 irqreturn_t ret = IRQ_NONE;
1632 unsigned long intr_status, intr_enable;
1634 spin_lock(&mdp->lock);
1636 /* Get interrupt status */
1637 intr_status = sh_eth_read(ndev, EESR);
1638 /* Mask it with the interrupt mask, forcing ECI interrupt to be always
1639 * enabled since it's the one that comes thru regardless of the mask,
1640 * and we need to fully handle it in sh_eth_error() in order to quench
1641 * it as it doesn't get cleared by just writing 1 to the ECI bit...
1643 intr_enable = sh_eth_read(ndev, EESIPR);
1644 intr_status &= intr_enable | DMAC_M_ECI;
1645 if (intr_status & (EESR_RX_CHECK | cd->tx_check | cd->eesr_err_check))
1650 if (intr_status & EESR_RX_CHECK) {
1651 if (napi_schedule_prep(&mdp->napi)) {
1652 /* Mask Rx interrupts */
1653 sh_eth_write(ndev, intr_enable & ~EESR_RX_CHECK,
1655 __napi_schedule(&mdp->napi);
1658 "ignoring interrupt, status 0x%08lx, mask 0x%08lx.\n",
1659 intr_status, intr_enable);
1664 if (intr_status & cd->tx_check) {
1665 /* Clear Tx interrupts */
1666 sh_eth_write(ndev, intr_status & cd->tx_check, EESR);
1668 sh_eth_txfree(ndev);
1669 netif_wake_queue(ndev);
1672 if (intr_status & cd->eesr_err_check) {
1673 /* Clear error interrupts */
1674 sh_eth_write(ndev, intr_status & cd->eesr_err_check, EESR);
1676 sh_eth_error(ndev, intr_status);
1680 spin_unlock(&mdp->lock);
1685 static int sh_eth_poll(struct napi_struct *napi, int budget)
1687 struct sh_eth_private *mdp = container_of(napi, struct sh_eth_private,
1689 struct net_device *ndev = napi->dev;
1691 unsigned long intr_status;
1694 intr_status = sh_eth_read(ndev, EESR);
1695 if (!(intr_status & EESR_RX_CHECK))
1697 /* Clear Rx interrupts */
1698 sh_eth_write(ndev, intr_status & EESR_RX_CHECK, EESR);
1700 if (sh_eth_rx(ndev, intr_status, "a))
1704 napi_complete(napi);
1706 /* Reenable Rx interrupts */
1707 sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
1709 return budget - quota;
1712 /* PHY state control function */
1713 static void sh_eth_adjust_link(struct net_device *ndev)
1715 struct sh_eth_private *mdp = netdev_priv(ndev);
1716 struct phy_device *phydev = mdp->phydev;
1720 if (phydev->duplex != mdp->duplex) {
1722 mdp->duplex = phydev->duplex;
1723 if (mdp->cd->set_duplex)
1724 mdp->cd->set_duplex(ndev);
1727 if (phydev->speed != mdp->speed) {
1729 mdp->speed = phydev->speed;
1730 if (mdp->cd->set_rate)
1731 mdp->cd->set_rate(ndev);
1735 sh_eth_read(ndev, ECMR) & ~ECMR_TXF,
1738 mdp->link = phydev->link;
1739 if (mdp->cd->no_psr || mdp->no_ether_link)
1740 sh_eth_rcv_snd_enable(ndev);
1742 } else if (mdp->link) {
1747 if (mdp->cd->no_psr || mdp->no_ether_link)
1748 sh_eth_rcv_snd_disable(ndev);
1751 if (new_state && netif_msg_link(mdp))
1752 phy_print_status(phydev);
1755 /* PHY init function */
1756 static int sh_eth_phy_init(struct net_device *ndev)
1758 struct device_node *np = ndev->dev.parent->of_node;
1759 struct sh_eth_private *mdp = netdev_priv(ndev);
1760 struct phy_device *phydev = NULL;
1766 /* Try connect to PHY */
1768 struct device_node *pn;
1770 pn = of_parse_phandle(np, "phy-handle", 0);
1771 phydev = of_phy_connect(ndev, pn,
1772 sh_eth_adjust_link, 0,
1773 mdp->phy_interface);
1776 phydev = ERR_PTR(-ENOENT);
1778 char phy_id[MII_BUS_ID_SIZE + 3];
1780 snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
1781 mdp->mii_bus->id, mdp->phy_id);
1783 phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link,
1784 mdp->phy_interface);
1787 if (IS_ERR(phydev)) {
1788 netdev_err(ndev, "failed to connect PHY\n");
1789 return PTR_ERR(phydev);
1792 netdev_info(ndev, "attached PHY %d (IRQ %d) to driver %s\n",
1793 phydev->addr, phydev->irq, phydev->drv->name);
1795 mdp->phydev = phydev;
1800 /* PHY control start function */
1801 static int sh_eth_phy_start(struct net_device *ndev)
1803 struct sh_eth_private *mdp = netdev_priv(ndev);
1806 ret = sh_eth_phy_init(ndev);
1810 phy_start(mdp->phydev);
1815 static int sh_eth_get_settings(struct net_device *ndev,
1816 struct ethtool_cmd *ecmd)
1818 struct sh_eth_private *mdp = netdev_priv(ndev);
1819 unsigned long flags;
1822 spin_lock_irqsave(&mdp->lock, flags);
1823 ret = phy_ethtool_gset(mdp->phydev, ecmd);
1824 spin_unlock_irqrestore(&mdp->lock, flags);
1829 static int sh_eth_set_settings(struct net_device *ndev,
1830 struct ethtool_cmd *ecmd)
1832 struct sh_eth_private *mdp = netdev_priv(ndev);
1833 unsigned long flags;
1836 spin_lock_irqsave(&mdp->lock, flags);
1838 /* disable tx and rx */
1839 sh_eth_rcv_snd_disable(ndev);
1841 ret = phy_ethtool_sset(mdp->phydev, ecmd);
1845 if (ecmd->duplex == DUPLEX_FULL)
1850 if (mdp->cd->set_duplex)
1851 mdp->cd->set_duplex(ndev);
1856 /* enable tx and rx */
1857 sh_eth_rcv_snd_enable(ndev);
1859 spin_unlock_irqrestore(&mdp->lock, flags);
1864 static int sh_eth_nway_reset(struct net_device *ndev)
1866 struct sh_eth_private *mdp = netdev_priv(ndev);
1867 unsigned long flags;
1870 spin_lock_irqsave(&mdp->lock, flags);
1871 ret = phy_start_aneg(mdp->phydev);
1872 spin_unlock_irqrestore(&mdp->lock, flags);
1877 static u32 sh_eth_get_msglevel(struct net_device *ndev)
1879 struct sh_eth_private *mdp = netdev_priv(ndev);
1880 return mdp->msg_enable;
1883 static void sh_eth_set_msglevel(struct net_device *ndev, u32 value)
1885 struct sh_eth_private *mdp = netdev_priv(ndev);
1886 mdp->msg_enable = value;
1889 static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = {
1890 "rx_current", "tx_current",
1891 "rx_dirty", "tx_dirty",
1893 #define SH_ETH_STATS_LEN ARRAY_SIZE(sh_eth_gstrings_stats)
1895 static int sh_eth_get_sset_count(struct net_device *netdev, int sset)
1899 return SH_ETH_STATS_LEN;
1905 static void sh_eth_get_ethtool_stats(struct net_device *ndev,
1906 struct ethtool_stats *stats, u64 *data)
1908 struct sh_eth_private *mdp = netdev_priv(ndev);
1911 /* device-specific stats */
1912 data[i++] = mdp->cur_rx;
1913 data[i++] = mdp->cur_tx;
1914 data[i++] = mdp->dirty_rx;
1915 data[i++] = mdp->dirty_tx;
1918 static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
1920 switch (stringset) {
1922 memcpy(data, *sh_eth_gstrings_stats,
1923 sizeof(sh_eth_gstrings_stats));
1928 static void sh_eth_get_ringparam(struct net_device *ndev,
1929 struct ethtool_ringparam *ring)
1931 struct sh_eth_private *mdp = netdev_priv(ndev);
1933 ring->rx_max_pending = RX_RING_MAX;
1934 ring->tx_max_pending = TX_RING_MAX;
1935 ring->rx_pending = mdp->num_rx_ring;
1936 ring->tx_pending = mdp->num_tx_ring;
1939 static int sh_eth_set_ringparam(struct net_device *ndev,
1940 struct ethtool_ringparam *ring)
1942 struct sh_eth_private *mdp = netdev_priv(ndev);
1945 if (ring->tx_pending > TX_RING_MAX ||
1946 ring->rx_pending > RX_RING_MAX ||
1947 ring->tx_pending < TX_RING_MIN ||
1948 ring->rx_pending < RX_RING_MIN)
1950 if (ring->rx_mini_pending || ring->rx_jumbo_pending)
1953 if (netif_running(ndev)) {
1954 netif_tx_disable(ndev);
1955 /* Disable interrupts by clearing the interrupt mask. */
1956 sh_eth_write(ndev, 0x0000, EESIPR);
1957 /* Stop the chip's Tx and Rx processes. */
1958 sh_eth_write(ndev, 0, EDTRR);
1959 sh_eth_write(ndev, 0, EDRRR);
1960 synchronize_irq(ndev->irq);
1963 /* Free all the skbuffs in the Rx queue. */
1964 sh_eth_ring_free(ndev);
1965 /* Free DMA buffer */
1966 sh_eth_free_dma_buffer(mdp);
1968 /* Set new parameters */
1969 mdp->num_rx_ring = ring->rx_pending;
1970 mdp->num_tx_ring = ring->tx_pending;
1972 ret = sh_eth_ring_init(ndev);
1974 netdev_err(ndev, "%s: sh_eth_ring_init failed.\n", __func__);
1977 ret = sh_eth_dev_init(ndev, false);
1979 netdev_err(ndev, "%s: sh_eth_dev_init failed.\n", __func__);
1983 if (netif_running(ndev)) {
1984 sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
1985 /* Setting the Rx mode will start the Rx process. */
1986 sh_eth_write(ndev, EDRRR_R, EDRRR);
1987 netif_wake_queue(ndev);
1993 static const struct ethtool_ops sh_eth_ethtool_ops = {
1994 .get_settings = sh_eth_get_settings,
1995 .set_settings = sh_eth_set_settings,
1996 .nway_reset = sh_eth_nway_reset,
1997 .get_msglevel = sh_eth_get_msglevel,
1998 .set_msglevel = sh_eth_set_msglevel,
1999 .get_link = ethtool_op_get_link,
2000 .get_strings = sh_eth_get_strings,
2001 .get_ethtool_stats = sh_eth_get_ethtool_stats,
2002 .get_sset_count = sh_eth_get_sset_count,
2003 .get_ringparam = sh_eth_get_ringparam,
2004 .set_ringparam = sh_eth_set_ringparam,
2007 /* network device open function */
2008 static int sh_eth_open(struct net_device *ndev)
2011 struct sh_eth_private *mdp = netdev_priv(ndev);
2013 pm_runtime_get_sync(&mdp->pdev->dev);
2015 napi_enable(&mdp->napi);
2017 ret = request_irq(ndev->irq, sh_eth_interrupt,
2018 mdp->cd->irq_flags, ndev->name, ndev);
2020 netdev_err(ndev, "Can not assign IRQ number\n");
2024 /* Descriptor set */
2025 ret = sh_eth_ring_init(ndev);
2030 ret = sh_eth_dev_init(ndev, true);
2034 /* PHY control start*/
2035 ret = sh_eth_phy_start(ndev);
2044 free_irq(ndev->irq, ndev);
2046 napi_disable(&mdp->napi);
2047 pm_runtime_put_sync(&mdp->pdev->dev);
2051 /* Timeout function */
2052 static void sh_eth_tx_timeout(struct net_device *ndev)
2054 struct sh_eth_private *mdp = netdev_priv(ndev);
2055 struct sh_eth_rxdesc *rxdesc;
2058 netif_stop_queue(ndev);
2060 netif_err(mdp, timer, ndev,
2061 "transmit timed out, status %8.8x, resetting...\n",
2062 (int)sh_eth_read(ndev, EESR));
2064 /* tx_errors count up */
2065 ndev->stats.tx_errors++;
2067 /* Free all the skbuffs in the Rx queue. */
2068 for (i = 0; i < mdp->num_rx_ring; i++) {
2069 rxdesc = &mdp->rx_ring[i];
2071 rxdesc->addr = 0xBADF00D0;
2072 dev_kfree_skb(mdp->rx_skbuff[i]);
2073 mdp->rx_skbuff[i] = NULL;
2075 for (i = 0; i < mdp->num_tx_ring; i++) {
2076 dev_kfree_skb(mdp->tx_skbuff[i]);
2077 mdp->tx_skbuff[i] = NULL;
2081 sh_eth_dev_init(ndev, true);
2084 /* Packet transmit function */
2085 static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
2087 struct sh_eth_private *mdp = netdev_priv(ndev);
2088 struct sh_eth_txdesc *txdesc;
2090 unsigned long flags;
2092 spin_lock_irqsave(&mdp->lock, flags);
2093 if ((mdp->cur_tx - mdp->dirty_tx) >= (mdp->num_tx_ring - 4)) {
2094 if (!sh_eth_txfree(ndev)) {
2095 netif_warn(mdp, tx_queued, ndev, "TxFD exhausted.\n");
2096 netif_stop_queue(ndev);
2097 spin_unlock_irqrestore(&mdp->lock, flags);
2098 return NETDEV_TX_BUSY;
2101 spin_unlock_irqrestore(&mdp->lock, flags);
2103 entry = mdp->cur_tx % mdp->num_tx_ring;
2104 mdp->tx_skbuff[entry] = skb;
2105 txdesc = &mdp->tx_ring[entry];
2107 if (!mdp->cd->hw_swap)
2108 sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)),
2110 txdesc->addr = dma_map_single(&ndev->dev, skb->data, skb->len,
2112 if (skb->len < ETH_ZLEN)
2113 txdesc->buffer_length = ETH_ZLEN;
2115 txdesc->buffer_length = skb->len;
2117 if (entry >= mdp->num_tx_ring - 1)
2118 txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE);
2120 txdesc->status |= cpu_to_edmac(mdp, TD_TACT);
2124 if (!(sh_eth_read(ndev, EDTRR) & sh_eth_get_edtrr_trns(mdp)))
2125 sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
2127 return NETDEV_TX_OK;
2130 static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
2132 struct sh_eth_private *mdp = netdev_priv(ndev);
2134 if (sh_eth_is_rz_fast_ether(mdp))
2135 return &ndev->stats;
2137 if (!mdp->is_opened)
2138 return &ndev->stats;
2140 ndev->stats.tx_dropped += sh_eth_read(ndev, TROCR);
2141 sh_eth_write(ndev, 0, TROCR); /* (write clear) */
2142 ndev->stats.collisions += sh_eth_read(ndev, CDCR);
2143 sh_eth_write(ndev, 0, CDCR); /* (write clear) */
2144 ndev->stats.tx_carrier_errors += sh_eth_read(ndev, LCCR);
2145 sh_eth_write(ndev, 0, LCCR); /* (write clear) */
2147 if (sh_eth_is_gether(mdp)) {
2148 ndev->stats.tx_carrier_errors += sh_eth_read(ndev, CERCR);
2149 sh_eth_write(ndev, 0, CERCR); /* (write clear) */
2150 ndev->stats.tx_carrier_errors += sh_eth_read(ndev, CEECR);
2151 sh_eth_write(ndev, 0, CEECR); /* (write clear) */
2153 ndev->stats.tx_carrier_errors += sh_eth_read(ndev, CNDCR);
2154 sh_eth_write(ndev, 0, CNDCR); /* (write clear) */
2157 return &ndev->stats;
2160 /* device close function */
2161 static int sh_eth_close(struct net_device *ndev)
2163 struct sh_eth_private *mdp = netdev_priv(ndev);
2165 netif_stop_queue(ndev);
2167 /* Disable interrupts by clearing the interrupt mask. */
2168 sh_eth_write(ndev, 0x0000, EESIPR);
2170 /* Stop the chip's Tx and Rx processes. */
2171 sh_eth_write(ndev, 0, EDTRR);
2172 sh_eth_write(ndev, 0, EDRRR);
2174 sh_eth_get_stats(ndev);
2175 /* PHY Disconnect */
2177 phy_stop(mdp->phydev);
2178 phy_disconnect(mdp->phydev);
2181 free_irq(ndev->irq, ndev);
2183 napi_disable(&mdp->napi);
2185 /* Free all the skbuffs in the Rx queue. */
2186 sh_eth_ring_free(ndev);
2188 /* free DMA buffer */
2189 sh_eth_free_dma_buffer(mdp);
2191 pm_runtime_put_sync(&mdp->pdev->dev);
2198 /* ioctl to device function */
2199 static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
2201 struct sh_eth_private *mdp = netdev_priv(ndev);
2202 struct phy_device *phydev = mdp->phydev;
2204 if (!netif_running(ndev))
2210 return phy_mii_ioctl(phydev, rq, cmd);
2213 /* For TSU_POSTn. Please refer to the manual about this (strange) bitfields */
2214 static void *sh_eth_tsu_get_post_reg_offset(struct sh_eth_private *mdp,
2217 return sh_eth_tsu_get_offset(mdp, TSU_POST1) + (entry / 8 * 4);
2220 static u32 sh_eth_tsu_get_post_mask(int entry)
2222 return 0x0f << (28 - ((entry % 8) * 4));
2225 static u32 sh_eth_tsu_get_post_bit(struct sh_eth_private *mdp, int entry)
2227 return (0x08 >> (mdp->port << 1)) << (28 - ((entry % 8) * 4));
2230 static void sh_eth_tsu_enable_cam_entry_post(struct net_device *ndev,
2233 struct sh_eth_private *mdp = netdev_priv(ndev);
2237 reg_offset = sh_eth_tsu_get_post_reg_offset(mdp, entry);
2238 tmp = ioread32(reg_offset);
2239 iowrite32(tmp | sh_eth_tsu_get_post_bit(mdp, entry), reg_offset);
2242 static bool sh_eth_tsu_disable_cam_entry_post(struct net_device *ndev,
2245 struct sh_eth_private *mdp = netdev_priv(ndev);
2246 u32 post_mask, ref_mask, tmp;
2249 reg_offset = sh_eth_tsu_get_post_reg_offset(mdp, entry);
2250 post_mask = sh_eth_tsu_get_post_mask(entry);
2251 ref_mask = sh_eth_tsu_get_post_bit(mdp, entry) & ~post_mask;
2253 tmp = ioread32(reg_offset);
2254 iowrite32(tmp & ~post_mask, reg_offset);
2256 /* If other port enables, the function returns "true" */
2257 return tmp & ref_mask;
2260 static int sh_eth_tsu_busy(struct net_device *ndev)
2262 int timeout = SH_ETH_TSU_TIMEOUT_MS * 100;
2263 struct sh_eth_private *mdp = netdev_priv(ndev);
2265 while ((sh_eth_tsu_read(mdp, TSU_ADSBSY) & TSU_ADSBSY_0)) {
2269 netdev_err(ndev, "%s: timeout\n", __func__);
2277 static int sh_eth_tsu_write_entry(struct net_device *ndev, void *reg,
2282 val = addr[0] << 24 | addr[1] << 16 | addr[2] << 8 | addr[3];
2283 iowrite32(val, reg);
2284 if (sh_eth_tsu_busy(ndev) < 0)
2287 val = addr[4] << 8 | addr[5];
2288 iowrite32(val, reg + 4);
2289 if (sh_eth_tsu_busy(ndev) < 0)
2295 static void sh_eth_tsu_read_entry(void *reg, u8 *addr)
2299 val = ioread32(reg);
2300 addr[0] = (val >> 24) & 0xff;
2301 addr[1] = (val >> 16) & 0xff;
2302 addr[2] = (val >> 8) & 0xff;
2303 addr[3] = val & 0xff;
2304 val = ioread32(reg + 4);
2305 addr[4] = (val >> 8) & 0xff;
2306 addr[5] = val & 0xff;
2310 static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr)
2312 struct sh_eth_private *mdp = netdev_priv(ndev);
2313 void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
2315 u8 c_addr[ETH_ALEN];
2317 for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) {
2318 sh_eth_tsu_read_entry(reg_offset, c_addr);
2319 if (ether_addr_equal(addr, c_addr))
2326 static int sh_eth_tsu_find_empty(struct net_device *ndev)
2331 memset(blank, 0, sizeof(blank));
2332 entry = sh_eth_tsu_find_entry(ndev, blank);
2333 return (entry < 0) ? -ENOMEM : entry;
2336 static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev,
2339 struct sh_eth_private *mdp = netdev_priv(ndev);
2340 void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
2344 sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) &
2345 ~(1 << (31 - entry)), TSU_TEN);
2347 memset(blank, 0, sizeof(blank));
2348 ret = sh_eth_tsu_write_entry(ndev, reg_offset + entry * 8, blank);
2354 static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr)
2356 struct sh_eth_private *mdp = netdev_priv(ndev);
2357 void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
2363 i = sh_eth_tsu_find_entry(ndev, addr);
2365 /* No entry found, create one */
2366 i = sh_eth_tsu_find_empty(ndev);
2369 ret = sh_eth_tsu_write_entry(ndev, reg_offset + i * 8, addr);
2373 /* Enable the entry */
2374 sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) |
2375 (1 << (31 - i)), TSU_TEN);
2378 /* Entry found or created, enable POST */
2379 sh_eth_tsu_enable_cam_entry_post(ndev, i);
2384 static int sh_eth_tsu_del_entry(struct net_device *ndev, const u8 *addr)
2386 struct sh_eth_private *mdp = netdev_priv(ndev);
2392 i = sh_eth_tsu_find_entry(ndev, addr);
2395 if (sh_eth_tsu_disable_cam_entry_post(ndev, i))
2398 /* Disable the entry if both ports was disabled */
2399 ret = sh_eth_tsu_disable_cam_entry_table(ndev, i);
2407 static int sh_eth_tsu_purge_all(struct net_device *ndev)
2409 struct sh_eth_private *mdp = netdev_priv(ndev);
2412 if (unlikely(!mdp->cd->tsu))
2415 for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++) {
2416 if (sh_eth_tsu_disable_cam_entry_post(ndev, i))
2419 /* Disable the entry if both ports was disabled */
2420 ret = sh_eth_tsu_disable_cam_entry_table(ndev, i);
2428 static void sh_eth_tsu_purge_mcast(struct net_device *ndev)
2430 struct sh_eth_private *mdp = netdev_priv(ndev);
2432 void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
2435 if (unlikely(!mdp->cd->tsu))
2438 for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) {
2439 sh_eth_tsu_read_entry(reg_offset, addr);
2440 if (is_multicast_ether_addr(addr))
2441 sh_eth_tsu_del_entry(ndev, addr);
2445 /* Multicast reception directions set */
2446 static void sh_eth_set_multicast_list(struct net_device *ndev)
2448 struct sh_eth_private *mdp = netdev_priv(ndev);
2451 unsigned long flags;
2453 spin_lock_irqsave(&mdp->lock, flags);
2454 /* Initial condition is MCT = 1, PRM = 0.
2455 * Depending on ndev->flags, set PRM or clear MCT
2457 ecmr_bits = (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) | ECMR_MCT;
2459 if (!(ndev->flags & IFF_MULTICAST)) {
2460 sh_eth_tsu_purge_mcast(ndev);
2463 if (ndev->flags & IFF_ALLMULTI) {
2464 sh_eth_tsu_purge_mcast(ndev);
2465 ecmr_bits &= ~ECMR_MCT;
2469 if (ndev->flags & IFF_PROMISC) {
2470 sh_eth_tsu_purge_all(ndev);
2471 ecmr_bits = (ecmr_bits & ~ECMR_MCT) | ECMR_PRM;
2472 } else if (mdp->cd->tsu) {
2473 struct netdev_hw_addr *ha;
2474 netdev_for_each_mc_addr(ha, ndev) {
2475 if (mcast_all && is_multicast_ether_addr(ha->addr))
2478 if (sh_eth_tsu_add_entry(ndev, ha->addr) < 0) {
2480 sh_eth_tsu_purge_mcast(ndev);
2481 ecmr_bits &= ~ECMR_MCT;
2487 /* Normal, unicast/broadcast-only mode. */
2488 ecmr_bits = (ecmr_bits & ~ECMR_PRM) | ECMR_MCT;
2491 /* update the ethernet mode */
2492 sh_eth_write(ndev, ecmr_bits, ECMR);
2494 spin_unlock_irqrestore(&mdp->lock, flags);
2497 static int sh_eth_get_vtag_index(struct sh_eth_private *mdp)
2505 static int sh_eth_vlan_rx_add_vid(struct net_device *ndev,
2506 __be16 proto, u16 vid)
2508 struct sh_eth_private *mdp = netdev_priv(ndev);
2509 int vtag_reg_index = sh_eth_get_vtag_index(mdp);
2511 if (unlikely(!mdp->cd->tsu))
2514 /* No filtering if vid = 0 */
2518 mdp->vlan_num_ids++;
2520 /* The controller has one VLAN tag HW filter. So, if the filter is
2521 * already enabled, the driver disables it and the filte
2523 if (mdp->vlan_num_ids > 1) {
2524 /* disable VLAN filter */
2525 sh_eth_tsu_write(mdp, 0, vtag_reg_index);
2529 sh_eth_tsu_write(mdp, TSU_VTAG_ENABLE | (vid & TSU_VTAG_VID_MASK),
2535 static int sh_eth_vlan_rx_kill_vid(struct net_device *ndev,
2536 __be16 proto, u16 vid)
2538 struct sh_eth_private *mdp = netdev_priv(ndev);
2539 int vtag_reg_index = sh_eth_get_vtag_index(mdp);
2541 if (unlikely(!mdp->cd->tsu))
2544 /* No filtering if vid = 0 */
2548 mdp->vlan_num_ids--;
2549 sh_eth_tsu_write(mdp, 0, vtag_reg_index);
2554 /* SuperH's TSU register init function */
2555 static void sh_eth_tsu_init(struct sh_eth_private *mdp)
2557 if (sh_eth_is_rz_fast_ether(mdp)) {
2558 sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
2562 sh_eth_tsu_write(mdp, 0, TSU_FWEN0); /* Disable forward(0->1) */
2563 sh_eth_tsu_write(mdp, 0, TSU_FWEN1); /* Disable forward(1->0) */
2564 sh_eth_tsu_write(mdp, 0, TSU_FCM); /* forward fifo 3k-3k */
2565 sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0);
2566 sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1);
2567 sh_eth_tsu_write(mdp, 0, TSU_PRISL0);
2568 sh_eth_tsu_write(mdp, 0, TSU_PRISL1);
2569 sh_eth_tsu_write(mdp, 0, TSU_FWSL0);
2570 sh_eth_tsu_write(mdp, 0, TSU_FWSL1);
2571 sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC);
2572 if (sh_eth_is_gether(mdp)) {
2573 sh_eth_tsu_write(mdp, 0, TSU_QTAG0); /* Disable QTAG(0->1) */
2574 sh_eth_tsu_write(mdp, 0, TSU_QTAG1); /* Disable QTAG(1->0) */
2576 sh_eth_tsu_write(mdp, 0, TSU_QTAGM0); /* Disable QTAG(0->1) */
2577 sh_eth_tsu_write(mdp, 0, TSU_QTAGM1); /* Disable QTAG(1->0) */
2579 sh_eth_tsu_write(mdp, 0, TSU_FWSR); /* all interrupt status clear */
2580 sh_eth_tsu_write(mdp, 0, TSU_FWINMK); /* Disable all interrupt */
2581 sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
2582 sh_eth_tsu_write(mdp, 0, TSU_POST1); /* Disable CAM entry [ 0- 7] */
2583 sh_eth_tsu_write(mdp, 0, TSU_POST2); /* Disable CAM entry [ 8-15] */
2584 sh_eth_tsu_write(mdp, 0, TSU_POST3); /* Disable CAM entry [16-23] */
2585 sh_eth_tsu_write(mdp, 0, TSU_POST4); /* Disable CAM entry [24-31] */
2588 /* MDIO bus release function */
2589 static int sh_mdio_release(struct sh_eth_private *mdp)
2591 /* unregister mdio bus */
2592 mdiobus_unregister(mdp->mii_bus);
2594 /* free bitbang info */
2595 free_mdio_bitbang(mdp->mii_bus);
2600 /* MDIO bus init function */
2601 static int sh_mdio_init(struct sh_eth_private *mdp,
2602 struct sh_eth_plat_data *pd)
2605 struct bb_info *bitbang;
2606 struct platform_device *pdev = mdp->pdev;
2607 struct device *dev = &mdp->pdev->dev;
2609 /* create bit control struct for PHY */
2610 bitbang = devm_kzalloc(dev, sizeof(struct bb_info), GFP_KERNEL);
2615 bitbang->addr = mdp->addr + mdp->reg_offset[PIR];
2616 bitbang->set_gate = pd->set_mdio_gate;
2617 bitbang->mdi_msk = PIR_MDI;
2618 bitbang->mdo_msk = PIR_MDO;
2619 bitbang->mmd_msk = PIR_MMD;
2620 bitbang->mdc_msk = PIR_MDC;
2621 bitbang->ctrl.ops = &bb_ops;
2623 /* MII controller setting */
2624 mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
2628 /* Hook up MII support for ethtool */
2629 mdp->mii_bus->name = "sh_mii";
2630 mdp->mii_bus->parent = dev;
2631 snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
2632 pdev->name, pdev->id);
2635 mdp->mii_bus->irq = devm_kmalloc_array(dev, PHY_MAX_ADDR, sizeof(int),
2637 if (!mdp->mii_bus->irq) {
2642 /* register MDIO bus */
2644 ret = of_mdiobus_register(mdp->mii_bus, dev->of_node);
2646 for (i = 0; i < PHY_MAX_ADDR; i++)
2647 mdp->mii_bus->irq[i] = PHY_POLL;
2648 if (pd->phy_irq > 0)
2649 mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
2651 ret = mdiobus_register(mdp->mii_bus);
2660 free_mdio_bitbang(mdp->mii_bus);
2664 static const u16 *sh_eth_get_register_offset(int register_type)
2666 const u16 *reg_offset = NULL;
2668 switch (register_type) {
2669 case SH_ETH_REG_GIGABIT:
2670 reg_offset = sh_eth_offset_gigabit;
2672 case SH_ETH_REG_FAST_RZ:
2673 reg_offset = sh_eth_offset_fast_rz;
2675 case SH_ETH_REG_FAST_RCAR:
2676 reg_offset = sh_eth_offset_fast_rcar;
2678 case SH_ETH_REG_FAST_SH4:
2679 reg_offset = sh_eth_offset_fast_sh4;
2681 case SH_ETH_REG_FAST_SH3_SH2:
2682 reg_offset = sh_eth_offset_fast_sh3_sh2;
2691 static const struct net_device_ops sh_eth_netdev_ops = {
2692 .ndo_open = sh_eth_open,
2693 .ndo_stop = sh_eth_close,
2694 .ndo_start_xmit = sh_eth_start_xmit,
2695 .ndo_get_stats = sh_eth_get_stats,
2696 .ndo_tx_timeout = sh_eth_tx_timeout,
2697 .ndo_do_ioctl = sh_eth_do_ioctl,
2698 .ndo_validate_addr = eth_validate_addr,
2699 .ndo_set_mac_address = eth_mac_addr,
2700 .ndo_change_mtu = eth_change_mtu,
2703 static const struct net_device_ops sh_eth_netdev_ops_tsu = {
2704 .ndo_open = sh_eth_open,
2705 .ndo_stop = sh_eth_close,
2706 .ndo_start_xmit = sh_eth_start_xmit,
2707 .ndo_get_stats = sh_eth_get_stats,
2708 .ndo_set_rx_mode = sh_eth_set_multicast_list,
2709 .ndo_vlan_rx_add_vid = sh_eth_vlan_rx_add_vid,
2710 .ndo_vlan_rx_kill_vid = sh_eth_vlan_rx_kill_vid,
2711 .ndo_tx_timeout = sh_eth_tx_timeout,
2712 .ndo_do_ioctl = sh_eth_do_ioctl,
2713 .ndo_validate_addr = eth_validate_addr,
2714 .ndo_set_mac_address = eth_mac_addr,
2715 .ndo_change_mtu = eth_change_mtu,
2719 static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
2721 struct device_node *np = dev->of_node;
2722 struct sh_eth_plat_data *pdata;
2723 const char *mac_addr;
2725 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
2729 pdata->phy_interface = of_get_phy_mode(np);
2731 mac_addr = of_get_mac_address(np);
2733 memcpy(pdata->mac_addr, mac_addr, ETH_ALEN);
2735 pdata->no_ether_link =
2736 of_property_read_bool(np, "renesas,no-ether-link");
2737 pdata->ether_link_active_low =
2738 of_property_read_bool(np, "renesas,ether-link-active-low");
2743 static const struct of_device_id sh_eth_match_table[] = {
2744 { .compatible = "renesas,gether-r8a7740", .data = &r8a7740_data },
2745 { .compatible = "renesas,ether-r8a7778", .data = &r8a777x_data },
2746 { .compatible = "renesas,ether-r8a7779", .data = &r8a777x_data },
2747 { .compatible = "renesas,ether-r8a7790", .data = &r8a779x_data },
2748 { .compatible = "renesas,ether-r8a7791", .data = &r8a779x_data },
2749 { .compatible = "renesas,ether-r8a7794", .data = &r8a779x_data },
2750 { .compatible = "renesas,ether-r7s72100", .data = &r7s72100_data },
2753 MODULE_DEVICE_TABLE(of, sh_eth_match_table);
2755 static inline struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
2761 static int sh_eth_drv_probe(struct platform_device *pdev)
2764 struct resource *res;
2765 struct net_device *ndev = NULL;
2766 struct sh_eth_private *mdp = NULL;
2767 struct sh_eth_plat_data *pd = dev_get_platdata(&pdev->dev);
2768 const struct platform_device_id *id = platform_get_device_id(pdev);
2771 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2772 if (unlikely(res == NULL)) {
2773 dev_err(&pdev->dev, "invalid resource\n");
2777 ndev = alloc_etherdev(sizeof(struct sh_eth_private));
2781 pm_runtime_enable(&pdev->dev);
2782 pm_runtime_get_sync(&pdev->dev);
2784 /* The sh Ether-specific entries in the device structure. */
2785 ndev->base_addr = res->start;
2791 ret = platform_get_irq(pdev, 0);
2798 SET_NETDEV_DEV(ndev, &pdev->dev);
2800 mdp = netdev_priv(ndev);
2801 mdp->num_tx_ring = TX_RING_SIZE;
2802 mdp->num_rx_ring = RX_RING_SIZE;
2803 mdp->addr = devm_ioremap_resource(&pdev->dev, res);
2804 if (IS_ERR(mdp->addr)) {
2805 ret = PTR_ERR(mdp->addr);
2809 spin_lock_init(&mdp->lock);
2812 if (pdev->dev.of_node)
2813 pd = sh_eth_parse_dt(&pdev->dev);
2815 dev_err(&pdev->dev, "no platform data\n");
2821 mdp->phy_id = pd->phy;
2822 mdp->phy_interface = pd->phy_interface;
2824 mdp->edmac_endian = pd->edmac_endian;
2825 mdp->no_ether_link = pd->no_ether_link;
2826 mdp->ether_link_active_low = pd->ether_link_active_low;
2830 mdp->cd = (struct sh_eth_cpu_data *)id->driver_data;
2832 const struct of_device_id *match;
2834 match = of_match_device(of_match_ptr(sh_eth_match_table),
2836 mdp->cd = (struct sh_eth_cpu_data *)match->data;
2838 mdp->reg_offset = sh_eth_get_register_offset(mdp->cd->register_type);
2839 if (!mdp->reg_offset) {
2840 dev_err(&pdev->dev, "Unknown register type (%d)\n",
2841 mdp->cd->register_type);
2845 sh_eth_set_default_cpu_data(mdp->cd);
2849 ndev->netdev_ops = &sh_eth_netdev_ops_tsu;
2851 ndev->netdev_ops = &sh_eth_netdev_ops;
2852 ndev->ethtool_ops = &sh_eth_ethtool_ops;
2853 ndev->watchdog_timeo = TX_TIMEOUT;
2855 /* debug message level */
2856 mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE;
2858 /* read and set MAC address */
2859 read_mac_address(ndev, pd->mac_addr);
2860 if (!is_valid_ether_addr(ndev->dev_addr)) {
2861 dev_warn(&pdev->dev,
2862 "no valid MAC address supplied, using a random one.\n");
2863 eth_hw_addr_random(ndev);
2866 /* ioremap the TSU registers */
2868 struct resource *rtsu;
2869 rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2870 mdp->tsu_addr = devm_ioremap_resource(&pdev->dev, rtsu);
2871 if (IS_ERR(mdp->tsu_addr)) {
2872 ret = PTR_ERR(mdp->tsu_addr);
2875 mdp->port = devno % 2;
2876 ndev->features = NETIF_F_HW_VLAN_CTAG_FILTER;
2879 /* initialize first or needed device */
2880 if (!devno || pd->needs_init) {
2881 if (mdp->cd->chip_reset)
2882 mdp->cd->chip_reset(ndev);
2885 /* TSU init (Init only)*/
2886 sh_eth_tsu_init(mdp);
2891 ret = sh_mdio_init(mdp, pd);
2893 dev_err(&ndev->dev, "failed to initialise MDIO\n");
2897 netif_napi_add(ndev, &mdp->napi, sh_eth_poll, 64);
2899 /* network device register */
2900 ret = register_netdev(ndev);
2904 /* print device information */
2905 netdev_info(ndev, "Base address at 0x%x, %pM, IRQ %d.\n",
2906 (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
2908 pm_runtime_put(&pdev->dev);
2909 platform_set_drvdata(pdev, ndev);
2914 netif_napi_del(&mdp->napi);
2915 sh_mdio_release(mdp);
2922 pm_runtime_put(&pdev->dev);
2923 pm_runtime_disable(&pdev->dev);
2927 static int sh_eth_drv_remove(struct platform_device *pdev)
2929 struct net_device *ndev = platform_get_drvdata(pdev);
2930 struct sh_eth_private *mdp = netdev_priv(ndev);
2932 unregister_netdev(ndev);
2933 netif_napi_del(&mdp->napi);
2934 sh_mdio_release(mdp);
2935 pm_runtime_disable(&pdev->dev);
2942 static int sh_eth_runtime_nop(struct device *dev)
2944 /* Runtime PM callback shared between ->runtime_suspend()
2945 * and ->runtime_resume(). Simply returns success.
2947 * This driver re-initializes all registers after
2948 * pm_runtime_get_sync() anyway so there is no need
2949 * to save and restore registers here.
2954 static const struct dev_pm_ops sh_eth_dev_pm_ops = {
2955 .runtime_suspend = sh_eth_runtime_nop,
2956 .runtime_resume = sh_eth_runtime_nop,
2958 #define SH_ETH_PM_OPS (&sh_eth_dev_pm_ops)
2960 #define SH_ETH_PM_OPS NULL
2963 static struct platform_device_id sh_eth_id_table[] = {
2964 { "sh7619-ether", (kernel_ulong_t)&sh7619_data },
2965 { "sh771x-ether", (kernel_ulong_t)&sh771x_data },
2966 { "sh7724-ether", (kernel_ulong_t)&sh7724_data },
2967 { "sh7734-gether", (kernel_ulong_t)&sh7734_data },
2968 { "sh7757-ether", (kernel_ulong_t)&sh7757_data },
2969 { "sh7757-gether", (kernel_ulong_t)&sh7757_data_giga },
2970 { "sh7763-gether", (kernel_ulong_t)&sh7763_data },
2971 { "r7s72100-ether", (kernel_ulong_t)&r7s72100_data },
2972 { "r8a7740-gether", (kernel_ulong_t)&r8a7740_data },
2973 { "r8a777x-ether", (kernel_ulong_t)&r8a777x_data },
2974 { "r8a7790-ether", (kernel_ulong_t)&r8a779x_data },
2975 { "r8a7791-ether", (kernel_ulong_t)&r8a779x_data },
2976 { "r8a7794-ether", (kernel_ulong_t)&r8a779x_data },
2979 MODULE_DEVICE_TABLE(platform, sh_eth_id_table);
2981 static struct platform_driver sh_eth_driver = {
2982 .probe = sh_eth_drv_probe,
2983 .remove = sh_eth_drv_remove,
2984 .id_table = sh_eth_id_table,
2987 .pm = SH_ETH_PM_OPS,
2988 .of_match_table = of_match_ptr(sh_eth_match_table),
2992 module_platform_driver(sh_eth_driver);
2994 MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
2995 MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
2996 MODULE_LICENSE("GPL v2");