diff options
Diffstat (limited to 'drivers/net/ethernet/renesas/sh_eth.c')
| -rw-r--r-- | drivers/net/ethernet/renesas/sh_eth.c | 563 |
1 files changed, 370 insertions, 193 deletions
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index c7e1b8f333e..7622213beef 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -1,9 +1,9 @@ -/* - * SuperH Ethernet device driver +/* SuperH Ethernet device driver * * Copyright (C) 2006-2012 Nobuhiro Iwamatsu - * Copyright (C) 2008-2013 Renesas Solutions Corp. - * Copyright (C) 2013 Cogent Embedded, Inc. + * Copyright (C) 2008-2014 Renesas Solutions Corp. + * Copyright (C) 2013-2014 Cogent Embedded, Inc. + * Copyright (C) 2014 Codethink Limited * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -13,15 +13,11 @@ * 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> @@ -32,6 +28,10 @@ #include <linux/platform_device.h> #include <linux/mdio-bitbang.h> #include <linux/netdevice.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/of_irq.h> +#include <linux/of_net.h> #include <linux/phy.h> #include <linux/cache.h> #include <linux/io.h> @@ -41,6 +41,7 @@ #include <linux/if_vlan.h> #include <linux/clk.h> #include <linux/sh_eth.h> +#include <linux/of_mdio.h> #include "sh_eth.h" @@ -148,6 +149,65 @@ static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = { [FWALCR1] = 0x00b4, }; +static const u16 sh_eth_offset_fast_rz[SH_ETH_MAX_REGISTER_OFFSET] = { + [EDSR] = 0x0000, + [EDMR] = 0x0400, + [EDTRR] = 0x0408, + [EDRRR] = 0x0410, + [EESR] = 0x0428, + [EESIPR] = 0x0430, + [TDLAR] = 0x0010, + [TDFAR] = 0x0014, + [TDFXR] = 0x0018, + [TDFFR] = 0x001c, + [RDLAR] = 0x0030, + [RDFAR] = 0x0034, + [RDFXR] = 0x0038, + [RDFFR] = 0x003c, + [TRSCER] = 0x0438, + [RMFCR] = 0x0440, + [TFTR] = 0x0448, + [FDR] = 0x0450, + [RMCR] = 0x0458, + [RPADIR] = 0x0460, + [FCFTR] = 0x0468, + [CSMR] = 0x04E4, + + [ECMR] = 0x0500, + [RFLR] = 0x0508, + [ECSR] = 0x0510, + [ECSIPR] = 0x0518, + [PIR] = 0x0520, + [APR] = 0x0554, + [MPR] = 0x0558, + [PFTCR] = 0x055c, + [PFRCR] = 0x0560, + [TPAUSER] = 0x0564, + [MAHR] = 0x05c0, + [MALR] = 0x05c8, + [CEFCR] = 0x0740, + [FRECR] = 0x0748, + [TSFRCR] = 0x0750, + [TLFRCR] = 0x0758, + [RFCR] = 0x0760, + [MAFCR] = 0x0778, + + [ARSTR] = 0x0000, + [TSU_CTRST] = 0x0004, + [TSU_VTAG0] = 0x0058, + [TSU_ADSBSY] = 0x0060, + [TSU_TEN] = 0x0064, + [TSU_ADRH0] = 0x0100, + [TSU_ADRL0] = 0x0104, + [TSU_ADRH31] = 0x01f8, + [TSU_ADRL31] = 0x01fc, + + [TXNLCR0] = 0x0080, + [TXALCR0] = 0x0084, + [RXNLCR0] = 0x0088, + [RXALCR0] = 0x008C, +}; + static const u16 sh_eth_offset_fast_rcar[SH_ETH_MAX_REGISTER_OFFSET] = { [ECMR] = 0x0300, [RFLR] = 0x0308, @@ -247,6 +307,27 @@ static const u16 sh_eth_offset_fast_sh4[SH_ETH_MAX_REGISTER_OFFSET] = { }; static const u16 sh_eth_offset_fast_sh3_sh2[SH_ETH_MAX_REGISTER_OFFSET] = { + [EDMR] = 0x0000, + [EDTRR] = 0x0004, + [EDRRR] = 0x0008, + [TDLAR] = 0x000c, + [RDLAR] = 0x0010, + [EESR] = 0x0014, + [EESIPR] = 0x0018, + [TRSCER] = 0x001c, + [RMFCR] = 0x0020, + [TFTR] = 0x0024, + [FDR] = 0x0028, + [RMCR] = 0x002c, + [EDOCR] = 0x0030, + [FCFTR] = 0x0034, + [RPADIR] = 0x0038, + [TRIMD] = 0x003c, + [RBWAR] = 0x0040, + [RDFAR] = 0x0044, + [TBRAR] = 0x004c, + [TDFAR] = 0x0050, + [ECMR] = 0x0160, [ECSR] = 0x0164, [ECSIPR] = 0x0168, @@ -314,12 +395,14 @@ static const u16 sh_eth_offset_fast_sh3_sh2[SH_ETH_MAX_REGISTER_OFFSET] = { [TSU_ADRL31] = 0x01fc, }; -static int sh_eth_is_gether(struct sh_eth_private *mdp) +static bool sh_eth_is_gether(struct sh_eth_private *mdp) { - if (mdp->reg_offset == sh_eth_offset_gigabit) - return 1; - else - return 0; + return mdp->reg_offset == sh_eth_offset_gigabit; +} + +static bool sh_eth_is_rz_fast_ether(struct sh_eth_private *mdp) +{ + return mdp->reg_offset == sh_eth_offset_fast_rz; } static void sh_eth_select_mii(struct net_device *ndev) @@ -338,7 +421,8 @@ static void sh_eth_select_mii(struct net_device *ndev) value = 0x0; break; default: - pr_warn("PHY interface mode was not setup. Set to MII.\n"); + netdev_warn(ndev, + "PHY interface mode was not setup. Set to MII.\n"); value = 0x1; break; } @@ -395,8 +479,8 @@ static struct sh_eth_cpu_data r8a777x_data = { .hw_swap = 1, }; -/* R8A7790 */ -static struct sh_eth_cpu_data r8a7790_data = { +/* R8A7790/1 */ +static struct sh_eth_cpu_data r8a779x_data = { .set_duplex = sh_eth_set_duplex, .set_rate = sh_eth_set_rate_r8a777x, @@ -483,7 +567,6 @@ static struct sh_eth_cpu_data sh7757_data = { .register_type = SH_ETH_REG_FAST_SH4, .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_RFE | @@ -561,7 +644,6 @@ static struct sh_eth_cpu_data sh7757_data_giga = { EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, .fdr_value = 0x0000072f, - .rmcr_value = 0x00000001, .irq_flags = IRQF_SHARED, .apr = 1, @@ -620,16 +702,12 @@ static struct sh_eth_cpu_data sh7734_data = { .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, - .fdr_value = 0x0000070f, - .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, @@ -650,8 +728,8 @@ static struct sh_eth_cpu_data sh7763_data = { .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_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | + EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, .apr = 1, @@ -692,12 +770,15 @@ static struct sh_eth_cpu_data r8a7740_data = { .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, + .fdr_value = 0x0000070f, .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, @@ -705,6 +786,37 @@ static struct sh_eth_cpu_data r8a7740_data = { .shift_rd0 = 1, }; +/* R7S72100 */ +static struct sh_eth_cpu_data r7s72100_data = { + .chip_reset = sh_eth_chip_reset, + .set_duplex = sh_eth_set_duplex, + + .register_type = SH_ETH_REG_FAST_RZ, + + .ecsr_value = ECSR_ICD, + .ecsipr_value = ECSIPR_ICDIP, + .eesipr_value = 0xff7f009f, + + .tx_check = EESR_TC1 | EESR_FTC, + .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | + EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE | + EESR_TDE | EESR_ECI, + .fdr_value = 0x0000070f, + + .no_psr = 1, + .apr = 1, + .mpr = 1, + .tpauser = 1, + .hw_swap = 1, + .rpadir = 1, + .rpadir_value = 2 << 16, + .no_trimd = 1, + .no_ade = 1, + .hw_crc = 1, + .tsu = 1, + .shift_rd0 = 1, +}; + static struct sh_eth_cpu_data sh7619_data = { .register_type = SH_ETH_REG_FAST_SH3_SH2, @@ -732,15 +844,12 @@ static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd) cd->ecsipr_value = DEFAULT_ECSIPR_INIT; if (!cd->fcftr_value) - cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \ + 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; @@ -760,7 +869,7 @@ static int sh_eth_check_reset(struct net_device *ndev) cnt--; } if (cnt <= 0) { - pr_err("Device reset failed\n"); + netdev_err(ndev, "Device reset failed\n"); ret = -ETIMEDOUT; } return ret; @@ -771,14 +880,14 @@ 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)) { + if (sh_eth_is_gether(mdp) || sh_eth_is_rz_fast_ether(mdp)) { 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; + return ret; /* Table Init */ sh_eth_write(ndev, 0x0, TDLAR); @@ -805,7 +914,6 @@ static int sh_eth_reset(struct net_device *ndev) EDMR); } -out: return ret; } @@ -849,20 +957,17 @@ static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x) return x; } -/* - * Program the hardware MAC address from dev->dev_addr. - */ +/* 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); + (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); + (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR); } -/* - * Get MAC address from SuperH MAC address register +/* 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). @@ -872,7 +977,7 @@ static void update_mac_address(struct net_device *ndev) 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); + memcpy(ndev->dev_addr, mac, ETH_ALEN); } else { ndev->dev_addr[0] = (sh_eth_read(ndev, MAHR) >> 24); ndev->dev_addr[1] = (sh_eth_read(ndev, MAHR) >> 16) & 0xFF; @@ -885,7 +990,7 @@ static void read_mac_address(struct net_device *ndev, unsigned char *mac) static unsigned long sh_eth_get_edtrr_trns(struct sh_eth_private *mdp) { - if (sh_eth_is_gether(mdp)) + if (sh_eth_is_gether(mdp) || sh_eth_is_rz_fast_ether(mdp)) return EDTRR_TRNS_GETHER; else return EDTRR_TRNS_ETHER; @@ -1019,8 +1124,10 @@ static void sh_eth_ring_format(struct net_device *ndev) int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring; int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring; - mdp->cur_rx = mdp->cur_tx = 0; - mdp->dirty_rx = mdp->dirty_tx = 0; + mdp->cur_rx = 0; + mdp->cur_tx = 0; + mdp->dirty_rx = 0; + mdp->dirty_tx = 0; memset(mdp->rx_ring, 0, rx_ringsize); @@ -1033,7 +1140,7 @@ static void sh_eth_ring_format(struct net_device *ndev) if (skb == NULL) break; dma_map_single(&ndev->dev, skb->data, mdp->rx_buf_sz, - DMA_FROM_DEVICE); + DMA_FROM_DEVICE); sh_eth_set_receive_align(skb); /* RX descriptor */ @@ -1046,7 +1153,8 @@ static void sh_eth_ring_format(struct net_device *ndev) /* Rx descriptor address set */ if (i == 0) { sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR); - if (sh_eth_is_gether(mdp)) + if (sh_eth_is_gether(mdp) || + sh_eth_is_rz_fast_ether(mdp)) sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR); } } @@ -1067,7 +1175,8 @@ static void sh_eth_ring_format(struct net_device *ndev) if (i == 0) { /* Tx descriptor address set */ sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR); - if (sh_eth_is_gether(mdp)) + if (sh_eth_is_gether(mdp) || + sh_eth_is_rz_fast_ether(mdp)) sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR); } } @@ -1081,8 +1190,7 @@ 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 + /* +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. @@ -1169,7 +1277,7 @@ static int sh_eth_dev_init(struct net_device *ndev, bool start) /* Soft Reset */ ret = sh_eth_reset(ndev); if (ret) - goto out; + return ret; if (mdp->cd->rmiimode) sh_eth_write(ndev, 0x1, RMIIMODE); @@ -1193,8 +1301,8 @@ static int sh_eth_dev_init(struct net_device *ndev, bool start) 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); + /* Frame recv control (enable multiple-packets per rx irq) */ + sh_eth_write(ndev, RMCR_RNC, RMCR); sh_eth_write(ndev, DESC_I_RINT8 | DESC_I_RINT5 | DESC_I_TINT2, TRSCER); @@ -1248,7 +1356,6 @@ static int sh_eth_dev_init(struct net_device *ndev, bool start) netif_start_queue(ndev); } -out: return ret; } @@ -1257,7 +1364,7 @@ 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 free_num = 0; int entry = 0; for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) { @@ -1271,7 +1378,7 @@ static int sh_eth_txfree(struct net_device *ndev) txdesc->buffer_length, DMA_TO_DEVICE); dev_kfree_skb_irq(mdp->tx_skbuff[entry]); mdp->tx_skbuff[entry] = NULL; - freeNum++; + free_num++; } txdesc->status = cpu_to_edmac(mdp, TD_TFP); if (entry >= mdp->num_tx_ring - 1) @@ -1280,7 +1387,7 @@ static int sh_eth_txfree(struct net_device *ndev) ndev->stats.tx_packets++; ndev->stats.tx_bytes += txdesc->buffer_length; } - return freeNum; + return free_num; } /* Packet receive function */ @@ -1292,7 +1399,6 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota) int entry = mdp->cur_rx % mdp->num_rx_ring; int boguscnt = (mdp->dirty_rx + mdp->num_rx_ring) - mdp->cur_rx; struct sk_buff *skb; - int exceeded = 0; u16 pkt_len = 0; u32 desc_status; @@ -1304,21 +1410,19 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota) if (--boguscnt < 0) break; - if (*quota <= 0) { - exceeded = 1; + if (*quota <= 0) break; - } + (*quota)--; if (!(desc_status & RDFEND)) ndev->stats.rx_length_errors++; - /* - * In case of almost all GETHER/ETHERs, the Receive Frame State + /* In case of almost all GETHER/ETHERs, the Receive Frame State * (RFS) bits in the Receive Descriptor 0 are from bit 9 to - * bit 0. However, in case of the R8A7740's GETHER, the RFS - * bits are from bit 25 to bit 16. So, the driver needs right - * shifting by 16. + * bit 0. However, in case of the R8A7740, R8A779x, and + * R7S72100 the RFS bits are from bit 25 to bit 16. So, the + * driver needs right shifting by 16. */ if (mdp->cd->shift_rd0) desc_status >>= 16; @@ -1356,7 +1460,6 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota) ndev->stats.rx_packets++; ndev->stats.rx_bytes += pkt_len; } - rxdesc->status |= cpu_to_edmac(mdp, RD_RACT); entry = (++mdp->cur_rx) % mdp->num_rx_ring; rxdesc = &mdp->rx_ring[entry]; } @@ -1374,7 +1477,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota) if (skb == NULL) break; /* Better luck next round. */ dma_map_single(&ndev->dev, skb->data, mdp->rx_buf_sz, - DMA_FROM_DEVICE); + DMA_FROM_DEVICE); sh_eth_set_receive_align(skb); skb_checksum_none_assert(skb); @@ -1392,14 +1495,17 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota) /* 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; + if (intr_status & EESR_RDE) { + u32 count = (sh_eth_read(ndev, RDFAR) - + sh_eth_read(ndev, RDLAR)) >> 4; + + mdp->cur_rx = count; + mdp->dirty_rx = count; + } sh_eth_write(ndev, EDRRR_R, EDRRR); } - return exceeded; + return *quota <= 0; } static void sh_eth_rcv_snd_disable(struct net_device *ndev) @@ -1438,17 +1544,17 @@ static void sh_eth_error(struct net_device *ndev, int intr_status) if (mdp->ether_link_active_low) link_stat = ~link_stat; } - if (!(link_stat & PHY_ST_LINK)) + if (!(link_stat & PHY_ST_LINK)) { sh_eth_rcv_snd_disable(ndev); - else { + } else { /* Link Up */ sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) & - ~DMAC_M_ECI, EESIPR); - /*clear int */ + ~DMAC_M_ECI, EESIPR); + /* clear int */ sh_eth_write(ndev, sh_eth_read(ndev, ECSR), - ECSR); + ECSR); sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) | - DMAC_M_ECI, EESIPR); + DMAC_M_ECI, EESIPR); /* enable tx and rx */ sh_eth_rcv_snd_enable(ndev); } @@ -1460,8 +1566,7 @@ ignore_link: /* 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"); + netif_err(mdp, tx_err, ndev, "Transmit Abort\n"); } } @@ -1470,45 +1575,38 @@ ignore_link: 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"); + netif_err(mdp, rx_err, ndev, "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"); + netif_err(mdp, tx_err, ndev, "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"); + netif_err(mdp, tx_err, ndev, "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"); + netif_err(mdp, rx_err, ndev, "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"); + netif_err(mdp, rx_err, ndev, "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"); + netif_err(mdp, tx_err, ndev, "Address Error\n"); } mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE; @@ -1517,11 +1615,11 @@ ignore_link: 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); + netdev_err(ndev, "TX error. status=%8.8x cur_tx=%8.8x dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n", + intr_status, mdp->cur_tx, mdp->dirty_tx, + (u32)ndev->state, edtrr); /* dirty buffer free */ sh_eth_txfree(ndev); @@ -1566,9 +1664,9 @@ static irqreturn_t sh_eth_interrupt(int irq, void *netdev) EESIPR); __napi_schedule(&mdp->napi); } else { - dev_warn(&ndev->dev, - "ignoring interrupt, status 0x%08lx, mask 0x%08lx.\n", - intr_status, intr_enable); + netdev_warn(ndev, + "ignoring interrupt, status 0x%08lx, mask 0x%08lx.\n", + intr_status, intr_enable); } } @@ -1644,7 +1742,8 @@ static void sh_eth_adjust_link(struct net_device *ndev) } if (!mdp->link) { sh_eth_write(ndev, - (sh_eth_read(ndev, ECMR) & ~ECMR_TXF), ECMR); + sh_eth_read(ndev, ECMR) & ~ECMR_TXF, + ECMR); new_state = 1; mdp->link = phydev->link; if (mdp->cd->no_psr || mdp->no_ether_link) @@ -1666,27 +1765,42 @@ static void sh_eth_adjust_link(struct net_device *ndev) /* PHY init function */ static int sh_eth_phy_init(struct net_device *ndev) { + struct device_node *np = ndev->dev.parent->of_node; 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 = 0; mdp->speed = 0; mdp->duplex = -1; /* Try connect to PHY */ - phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link, - mdp->phy_interface); + if (np) { + struct device_node *pn; + + pn = of_parse_phandle(np, "phy-handle", 0); + phydev = of_phy_connect(ndev, pn, + sh_eth_adjust_link, 0, + mdp->phy_interface); + + if (!phydev) + phydev = ERR_PTR(-ENOENT); + } else { + char phy_id[MII_BUS_ID_SIZE + 3]; + + snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, + mdp->mii_bus->id, mdp->phy_id); + + phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link, + mdp->phy_interface); + } + if (IS_ERR(phydev)) { - dev_err(&ndev->dev, "phy_connect failed\n"); + netdev_err(ndev, "failed to connect PHY\n"); return PTR_ERR(phydev); } - dev_info(&ndev->dev, "attached phy %i to driver %s\n", - phydev->addr, phydev->drv->name); + netdev_info(ndev, "attached PHY %d (IRQ %d) to driver %s\n", + phydev->addr, phydev->irq, phydev->drv->name); mdp->phydev = phydev; @@ -1703,15 +1817,13 @@ static int sh_eth_phy_start(struct net_device *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 ethtool_cmd *ecmd) { struct sh_eth_private *mdp = netdev_priv(ndev); unsigned long flags; @@ -1725,7 +1837,7 @@ static int sh_eth_get_settings(struct net_device *ndev, } static int sh_eth_set_settings(struct net_device *ndev, - struct ethtool_cmd *ecmd) + struct ethtool_cmd *ecmd) { struct sh_eth_private *mdp = netdev_priv(ndev); unsigned long flags; @@ -1801,7 +1913,7 @@ static int sh_eth_get_sset_count(struct net_device *netdev, int sset) } static void sh_eth_get_ethtool_stats(struct net_device *ndev, - struct ethtool_stats *stats, u64 *data) + struct ethtool_stats *stats, u64 *data) { struct sh_eth_private *mdp = netdev_priv(ndev); int i = 0; @@ -1818,7 +1930,7 @@ 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)); + sizeof(sh_eth_gstrings_stats)); break; } } @@ -1869,12 +1981,12 @@ static int sh_eth_set_ringparam(struct net_device *ndev, ret = sh_eth_ring_init(ndev); if (ret < 0) { - dev_err(&ndev->dev, "%s: sh_eth_ring_init failed.\n", __func__); + netdev_err(ndev, "%s: sh_eth_ring_init failed.\n", __func__); return ret; } ret = sh_eth_dev_init(ndev, false); if (ret < 0) { - dev_err(&ndev->dev, "%s: sh_eth_dev_init failed.\n", __func__); + netdev_err(ndev, "%s: sh_eth_dev_init failed.\n", __func__); return ret; } @@ -1915,7 +2027,7 @@ static int sh_eth_open(struct net_device *ndev) ret = request_irq(ndev->irq, sh_eth_interrupt, mdp->cd->irq_flags, ndev->name, ndev); if (ret) { - dev_err(&ndev->dev, "Can not assign IRQ number\n"); + netdev_err(ndev, "Can not assign IRQ number\n"); goto out_napi_off; } @@ -1953,9 +2065,9 @@ static void sh_eth_tx_timeout(struct net_device *ndev) 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)); + netif_err(mdp, timer, ndev, + "transmit timed out, status %8.8x, resetting...\n", + (int)sh_eth_read(ndev, EESR)); /* tx_errors count up */ ndev->stats.tx_errors++; @@ -1990,8 +2102,7 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev) spin_lock_irqsave(&mdp->lock, flags); if ((mdp->cur_tx - mdp->dirty_tx) >= (mdp->num_tx_ring - 4)) { if (!sh_eth_txfree(ndev)) { - if (netif_msg_tx_queued(mdp)) - dev_warn(&ndev->dev, "TxFD exhausted.\n"); + netif_warn(mdp, tx_queued, ndev, "TxFD exhausted.\n"); netif_stop_queue(ndev); spin_unlock_irqrestore(&mdp->lock, flags); return NETDEV_TX_BUSY; @@ -2008,8 +2119,8 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev) 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; + if (skb->len < ETH_ZLEN) + txdesc->buffer_length = ETH_ZLEN; else txdesc->buffer_length = skb->len; @@ -2065,6 +2176,9 @@ static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev) { struct sh_eth_private *mdp = netdev_priv(ndev); + if (sh_eth_is_rz_fast_ether(mdp)) + return &ndev->stats; + pm_runtime_get_sync(&mdp->pdev->dev); ndev->stats.tx_dropped += sh_eth_read(ndev, TROCR); @@ -2088,8 +2202,7 @@ static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev) } /* ioctl to device function */ -static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, - int cmd) +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; @@ -2159,7 +2272,7 @@ static int sh_eth_tsu_busy(struct net_device *ndev) udelay(10); timeout--; if (timeout <= 0) { - dev_err(&ndev->dev, "%s: timeout\n", __func__); + netdev_err(ndev, "%s: timeout\n", __func__); return -ETIMEDOUT; } } @@ -2209,7 +2322,7 @@ static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr) 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) + if (ether_addr_equal(addr, c_addr)) return i; } @@ -2344,8 +2457,7 @@ static void sh_eth_set_multicast_list(struct net_device *ndev) unsigned long flags; spin_lock_irqsave(&mdp->lock, flags); - /* - * Initial condition is MCT = 1, PRM = 0. + /* 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; @@ -2411,8 +2523,7 @@ static int sh_eth_vlan_rx_add_vid(struct net_device *ndev, mdp->vlan_num_ids++; - /* - * The controller has one VLAN tag HW filter. So, if the filter is + /* 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) { @@ -2449,6 +2560,11 @@ static int sh_eth_vlan_rx_kill_vid(struct net_device *ndev, /* SuperH's TSU register init function */ static void sh_eth_tsu_init(struct sh_eth_private *mdp) { + if (sh_eth_is_rz_fast_ether(mdp)) { + sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */ + return; + } + 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 */ @@ -2476,37 +2592,30 @@ static void sh_eth_tsu_init(struct sh_eth_private *mdp) } /* MDIO bus release function */ -static int sh_mdio_release(struct net_device *ndev) +static int sh_mdio_release(struct sh_eth_private *mdp) { - 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); + mdiobus_unregister(mdp->mii_bus); /* free bitbang info */ - free_mdio_bitbang(bus); + free_mdio_bitbang(mdp->mii_bus); return 0; } /* MDIO bus init function */ -static int sh_mdio_init(struct net_device *ndev, int id, +static int sh_mdio_init(struct sh_eth_private *mdp, struct sh_eth_plat_data *pd) { int ret, i; struct bb_info *bitbang; - struct sh_eth_private *mdp = netdev_priv(ndev); + struct platform_device *pdev = mdp->pdev; + struct device *dev = &mdp->pdev->dev; /* create bit control struct for PHY */ - bitbang = devm_kzalloc(&ndev->dev, sizeof(struct bb_info), - GFP_KERNEL); - if (!bitbang) { - ret = -ENOMEM; - goto out; - } + bitbang = devm_kzalloc(dev, sizeof(struct bb_info), GFP_KERNEL); + if (!bitbang) + return -ENOMEM; /* bitbang init */ bitbang->addr = mdp->addr + mdp->reg_offset[PIR]; @@ -2519,42 +2628,42 @@ static int sh_mdio_init(struct net_device *ndev, int id, /* MII controller setting */ mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl); - if (!mdp->mii_bus) { - ret = -ENOMEM; - goto out; - } + if (!mdp->mii_bus) + return -ENOMEM; /* Hook up MII support for ethtool */ mdp->mii_bus->name = "sh_mii"; - mdp->mii_bus->parent = &ndev->dev; + mdp->mii_bus->parent = dev; snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", - mdp->pdev->name, id); + pdev->name, pdev->id); /* PHY IRQ */ - mdp->mii_bus->irq = devm_kzalloc(&ndev->dev, - sizeof(int) * PHY_MAX_ADDR, - GFP_KERNEL); + mdp->mii_bus->irq = devm_kmalloc_array(dev, PHY_MAX_ADDR, sizeof(int), + 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; + /* register MDIO bus */ + if (dev->of_node) { + ret = of_mdiobus_register(mdp->mii_bus, dev->of_node); + } else { + for (i = 0; i < PHY_MAX_ADDR; i++) + mdp->mii_bus->irq[i] = PHY_POLL; + if (pd->phy_irq > 0) + mdp->mii_bus->irq[pd->phy] = pd->phy_irq; + + ret = mdiobus_register(mdp->mii_bus); + } - /* register mdio bus */ - ret = mdiobus_register(mdp->mii_bus); if (ret) goto out_free_bus; - dev_set_drvdata(&ndev->dev, mdp->mii_bus); - return 0; out_free_bus: free_mdio_bitbang(mdp->mii_bus); - -out: return ret; } @@ -2566,6 +2675,9 @@ static const u16 *sh_eth_get_register_offset(int register_type) case SH_ETH_REG_GIGABIT: reg_offset = sh_eth_offset_gigabit; break; + case SH_ETH_REG_FAST_RZ: + reg_offset = sh_eth_offset_fast_rz; + break; case SH_ETH_REG_FAST_RCAR: reg_offset = sh_eth_offset_fast_rcar; break; @@ -2576,7 +2688,6 @@ static const u16 *sh_eth_get_register_offset(int register_type) reg_offset = sh_eth_offset_fast_sh3_sh2; break; default: - pr_err("Unknown register type (%d)\n", register_type); break; } @@ -2610,6 +2721,48 @@ static const struct net_device_ops sh_eth_netdev_ops_tsu = { .ndo_change_mtu = eth_change_mtu, }; +#ifdef CONFIG_OF +static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct sh_eth_plat_data *pdata; + const char *mac_addr; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + pdata->phy_interface = of_get_phy_mode(np); + + mac_addr = of_get_mac_address(np); + if (mac_addr) + memcpy(pdata->mac_addr, mac_addr, ETH_ALEN); + + pdata->no_ether_link = + of_property_read_bool(np, "renesas,no-ether-link"); + pdata->ether_link_active_low = + of_property_read_bool(np, "renesas,ether-link-active-low"); + + return pdata; +} + +static const struct of_device_id sh_eth_match_table[] = { + { .compatible = "renesas,gether-r8a7740", .data = &r8a7740_data }, + { .compatible = "renesas,ether-r8a7778", .data = &r8a777x_data }, + { .compatible = "renesas,ether-r8a7779", .data = &r8a777x_data }, + { .compatible = "renesas,ether-r8a7790", .data = &r8a779x_data }, + { .compatible = "renesas,ether-r8a7791", .data = &r8a779x_data }, + { .compatible = "renesas,ether-r7s72100", .data = &r7s72100_data }, + { } +}; +MODULE_DEVICE_TABLE(of, sh_eth_match_table); +#else +static inline struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev) +{ + return NULL; +} +#endif + static int sh_eth_drv_probe(struct platform_device *pdev) { int ret, devno = 0; @@ -2623,15 +2776,15 @@ static int sh_eth_drv_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (unlikely(res == NULL)) { dev_err(&pdev->dev, "invalid resource\n"); - ret = -EINVAL; - goto out; + return -EINVAL; } ndev = alloc_etherdev(sizeof(struct sh_eth_private)); - if (!ndev) { - ret = -ENOMEM; - goto out; - } + if (!ndev) + return -ENOMEM; + + pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); /* The sh Ether-specific entries in the device structure. */ ndev->base_addr = res->start; @@ -2660,8 +2813,14 @@ static int sh_eth_drv_probe(struct platform_device *pdev) spin_lock_init(&mdp->lock); mdp->pdev = pdev; - pm_runtime_enable(&pdev->dev); - pm_runtime_resume(&pdev->dev); + + if (pdev->dev.of_node) + pd = sh_eth_parse_dt(&pdev->dev); + if (!pd) { + dev_err(&pdev->dev, "no platform data\n"); + ret = -EINVAL; + goto out_release; + } /* get PHY ID */ mdp->phy_id = pd->phy; @@ -2672,8 +2831,22 @@ static int sh_eth_drv_probe(struct platform_device *pdev) mdp->ether_link_active_low = pd->ether_link_active_low; /* set cpu data */ - mdp->cd = (struct sh_eth_cpu_data *)id->driver_data; + if (id) { + mdp->cd = (struct sh_eth_cpu_data *)id->driver_data; + } else { + const struct of_device_id *match; + + match = of_match_device(of_match_ptr(sh_eth_match_table), + &pdev->dev); + mdp->cd = (struct sh_eth_cpu_data *)match->data; + } mdp->reg_offset = sh_eth_get_register_offset(mdp->cd->register_type); + if (!mdp->reg_offset) { + dev_err(&pdev->dev, "Unknown register type (%d)\n", + mdp->cd->register_type); + ret = -EINVAL; + goto out_release; + } sh_eth_set_default_cpu_data(mdp->cd); /* set function */ @@ -2681,7 +2854,7 @@ static int sh_eth_drv_probe(struct platform_device *pdev) ndev->netdev_ops = &sh_eth_netdev_ops_tsu; else ndev->netdev_ops = &sh_eth_netdev_ops; - SET_ETHTOOL_OPS(ndev, &sh_eth_ethtool_ops); + ndev->ethtool_ops = &sh_eth_ethtool_ops; ndev->watchdog_timeo = TX_TIMEOUT; /* debug message level */ @@ -2719,6 +2892,13 @@ static int sh_eth_drv_probe(struct platform_device *pdev) } } + /* MDIO bus init */ + ret = sh_mdio_init(mdp, pd); + if (ret) { + dev_err(&ndev->dev, "failed to initialise MDIO\n"); + goto out_release; + } + netif_napi_add(ndev, &mdp->napi, sh_eth_poll, 64); /* network device register */ @@ -2726,31 +2906,26 @@ static int sh_eth_drv_probe(struct platform_device *pdev) if (ret) goto out_napi_del; - /* 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); + netdev_info(ndev, "Base address at 0x%x, %pM, IRQ %d.\n", + (u32)ndev->base_addr, ndev->dev_addr, ndev->irq); + pm_runtime_put(&pdev->dev); platform_set_drvdata(pdev, ndev); return ret; -out_unregister: - unregister_netdev(ndev); - out_napi_del: netif_napi_del(&mdp->napi); + sh_mdio_release(mdp); out_release: /* net_dev free */ if (ndev) free_netdev(ndev); -out: + pm_runtime_put(&pdev->dev); + pm_runtime_disable(&pdev->dev); return ret; } @@ -2759,9 +2934,9 @@ 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); - sh_mdio_release(ndev); unregister_netdev(ndev); netif_napi_del(&mdp->napi); + sh_mdio_release(mdp); pm_runtime_disable(&pdev->dev); free_netdev(ndev); @@ -2771,8 +2946,7 @@ static int sh_eth_drv_remove(struct platform_device *pdev) #ifdef CONFIG_PM static int sh_eth_runtime_nop(struct device *dev) { - /* - * Runtime PM callback shared between ->runtime_suspend() + /* Runtime PM callback shared between ->runtime_suspend() * and ->runtime_resume(). Simply returns success. * * This driver re-initializes all registers after @@ -2799,9 +2973,11 @@ static struct platform_device_id sh_eth_id_table[] = { { "sh7757-ether", (kernel_ulong_t)&sh7757_data }, { "sh7757-gether", (kernel_ulong_t)&sh7757_data_giga }, { "sh7763-gether", (kernel_ulong_t)&sh7763_data }, + { "r7s72100-ether", (kernel_ulong_t)&r7s72100_data }, { "r8a7740-gether", (kernel_ulong_t)&r8a7740_data }, { "r8a777x-ether", (kernel_ulong_t)&r8a777x_data }, - { "r8a7790-ether", (kernel_ulong_t)&r8a7790_data }, + { "r8a7790-ether", (kernel_ulong_t)&r8a779x_data }, + { "r8a7791-ether", (kernel_ulong_t)&r8a779x_data }, { } }; MODULE_DEVICE_TABLE(platform, sh_eth_id_table); @@ -2813,6 +2989,7 @@ static struct platform_driver sh_eth_driver = { .driver = { .name = CARDNAME, .pm = SH_ETH_PM_OPS, + .of_match_table = of_match_ptr(sh_eth_match_table), }, }; |