diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 90fb0e9743b3..45a7a6ba7644 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -576,6 +576,7 @@ static struct sh_eth_cpu_data r8a7740_data = { .hw_checksum = 1, .tsu = 1, .select_mii = 1, + .magic = 1, }; /* There is CPU dependent code */ @@ -622,8 +623,9 @@ static struct sh_eth_cpu_data r8a779x_data = { .register_type = SH_ETH_REG_FAST_RCAR, - .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD, - .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP, + .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD | ECSR_MPD, + .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP | + ECSIPR_MPDIP, .eesipr_value = 0x01ff009f, .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, @@ -638,6 +640,7 @@ static struct sh_eth_cpu_data r8a779x_data = { .tpauser = 1, .hw_swap = 1, .rmiimode = 1, + .magic = 1, }; #endif /* CONFIG_OF */ @@ -814,6 +817,7 @@ static struct sh_eth_cpu_data sh7734_data = { .tsu = 1, .hw_checksum = 1, .select_mii = 1, + .magic = 1, }; /* SH7763 */ @@ -841,6 +845,7 @@ static struct sh_eth_cpu_data sh7763_data = { .no_ade = 1, .tsu = 1, .irq_flags = IRQF_SHARED, + .magic = 1, }; static struct sh_eth_cpu_data sh7619_data = { @@ -1550,6 +1555,8 @@ static void sh_eth_emac_interrupt(struct net_device *ndev) sh_eth_rcv_snd_enable(ndev); } } + if (felic_stat & ECSR_MPD) + pm_wakeup_event(&mdp->pdev->dev, 0); } /* error control function */ @@ -2199,6 +2206,33 @@ static int sh_eth_set_ringparam(struct net_device *ndev, return 0; } +static void sh_eth_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol) +{ + struct sh_eth_private *mdp = netdev_priv(ndev); + + wol->supported = 0; + wol->wolopts = 0; + + if (mdp->cd->magic && mdp->clk) { + wol->supported = WAKE_MAGIC; + wol->wolopts = mdp->wol_enabled ? WAKE_MAGIC : 0; + } +} + +static int sh_eth_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol) +{ + struct sh_eth_private *mdp = netdev_priv(ndev); + + if (!mdp->cd->magic || !mdp->clk || wol->wolopts & ~WAKE_MAGIC) + return -EOPNOTSUPP; + + mdp->wol_enabled = !!(wol->wolopts & WAKE_MAGIC); + + device_set_wakeup_enable(&mdp->pdev->dev, mdp->wol_enabled); + + return 0; +} + static const struct ethtool_ops sh_eth_ethtool_ops = { .get_regs_len = sh_eth_get_regs_len, .get_regs = sh_eth_get_regs, @@ -2213,6 +2247,8 @@ static const struct ethtool_ops sh_eth_ethtool_ops = { .set_ringparam = sh_eth_set_ringparam, .get_link_ksettings = sh_eth_get_link_ksettings, .set_link_ksettings = sh_eth_set_link_ksettings, + .get_wol = sh_eth_get_wol, + .set_wol = sh_eth_set_wol, }; /* network device open function */ @@ -3015,6 +3051,11 @@ static int sh_eth_drv_probe(struct platform_device *pdev) goto out_release; } + /* Get clock, if not found that's OK but Wake-On-Lan is unavailable */ + mdp->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(mdp->clk)) + mdp->clk = NULL; + ndev->base_addr = res->start; spin_lock_init(&mdp->lock); @@ -3109,6 +3150,9 @@ static int sh_eth_drv_probe(struct platform_device *pdev) if (ret) goto out_napi_del; + if (mdp->cd->magic && mdp->clk) + device_set_wakeup_capable(&pdev->dev, 1); + /* print device information */ netdev_info(ndev, "Base address at 0x%x, %pM, IRQ %d.\n", (u32)ndev->base_addr, ndev->dev_addr, ndev->irq); @@ -3148,15 +3192,67 @@ static int sh_eth_drv_remove(struct platform_device *pdev) #ifdef CONFIG_PM #ifdef CONFIG_PM_SLEEP +static int sh_eth_wol_setup(struct net_device *ndev) +{ + struct sh_eth_private *mdp = netdev_priv(ndev); + + /* Only allow ECI interrupts */ + synchronize_irq(ndev->irq); + napi_disable(&mdp->napi); + sh_eth_write(ndev, DMAC_M_ECI, EESIPR); + + /* Enable MagicPacket */ + sh_eth_modify(ndev, ECMR, 0, ECMR_MPDE); + + /* Increased clock usage so device won't be suspended */ + clk_enable(mdp->clk); + + return enable_irq_wake(ndev->irq); +} + +static int sh_eth_wol_restore(struct net_device *ndev) +{ + struct sh_eth_private *mdp = netdev_priv(ndev); + int ret; + + napi_enable(&mdp->napi); + + /* Disable MagicPacket */ + sh_eth_modify(ndev, ECMR, ECMR_MPDE, 0); + + /* The device needs to be reset to restore MagicPacket logic + * for next wakeup. If we close and open the device it will + * both be reset and all registers restored. This is what + * happens during suspend and resume without WoL enabled. + */ + ret = sh_eth_close(ndev); + if (ret < 0) + return ret; + ret = sh_eth_open(ndev); + if (ret < 0) + return ret; + + /* Restore clock usage count */ + clk_disable(mdp->clk); + + return disable_irq_wake(ndev->irq); +} + static int sh_eth_suspend(struct device *dev) { struct net_device *ndev = dev_get_drvdata(dev); + struct sh_eth_private *mdp = netdev_priv(ndev); int ret = 0; - if (netif_running(ndev)) { - netif_device_detach(ndev); + if (!netif_running(ndev)) + return 0; + + netif_device_detach(ndev); + + if (mdp->wol_enabled) + ret = sh_eth_wol_setup(ndev); + else ret = sh_eth_close(ndev); - } return ret; } @@ -3164,14 +3260,21 @@ static int sh_eth_suspend(struct device *dev) static int sh_eth_resume(struct device *dev) { struct net_device *ndev = dev_get_drvdata(dev); + struct sh_eth_private *mdp = netdev_priv(ndev); int ret = 0; - if (netif_running(ndev)) { + if (!netif_running(ndev)) + return 0; + + if (mdp->wol_enabled) + ret = sh_eth_wol_restore(ndev); + else ret = sh_eth_open(ndev); - if (ret < 0) - return ret; - netif_device_attach(ndev); - } + + if (ret < 0) + return ret; + + netif_device_attach(ndev); return ret; } diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h index 4ada0ff37712..a1bb8cc413dc 100644 --- a/drivers/net/ethernet/renesas/sh_eth.h +++ b/drivers/net/ethernet/renesas/sh_eth.h @@ -339,7 +339,7 @@ enum FELIC_MODE_BIT { ECMR_DPAD = 0x00200000, ECMR_RZPF = 0x00100000, ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000, ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000, - ECMR_PMDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020, + ECMR_MPDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020, ECMR_RTM = 0x00000010, ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004, ECMR_DM = 0x00000002, ECMR_PRM = 0x00000001, }; @@ -492,6 +492,7 @@ struct sh_eth_cpu_data { unsigned select_mii:1; /* EtherC have RMII_MII (MII select register) */ unsigned rmiimode:1; /* EtherC has RMIIMODE register */ unsigned rtrate:1; /* EtherC has RTRATE register */ + unsigned magic:1; /* EtherC has ECMR.MPDE and ECSR.MPD */ }; struct sh_eth_private { @@ -500,6 +501,7 @@ struct sh_eth_private { const u16 *reg_offset; void __iomem *addr; void __iomem *tsu_addr; + struct clk *clk; u32 num_rx_ring; u32 num_tx_ring; dma_addr_t rx_desc_dma; @@ -528,6 +530,7 @@ struct sh_eth_private { unsigned no_ether_link:1; unsigned ether_link_active_low:1; unsigned is_opened:1; + unsigned wol_enabled:1; }; static inline void sh_eth_soft_swap(char *src, int len)