From patchwork Thu Jul 12 19:05:03 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bryan Whitehead X-Patchwork-Id: 943172 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=microchip.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41RQTR6n4Zz9s0n for ; Fri, 13 Jul 2018 05:08:59 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727076AbeGLTTg (ORCPT ); Thu, 12 Jul 2018 15:19:36 -0400 Received: from esa1.microchip.iphmx.com ([68.232.147.91]:55031 "EHLO esa1.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726919AbeGLTTf (ORCPT ); Thu, 12 Jul 2018 15:19:35 -0400 X-IronPort-AV: E=Sophos;i="5.51,344,1526367600"; d="scan'208";a="16979609" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 12 Jul 2018 12:08:44 -0700 Received: from BW-Ubuntu-tester.mchp-main.com (10.10.76.4) by chn-sv-exch06.mchp-main.com (10.10.76.107) with Microsoft SMTP Server id 14.3.352.0; Thu, 12 Jul 2018 12:08:43 -0700 From: Bryan Whitehead To: CC: , , Subject: [PATCH v2 net-next 6/9] lan743x: Add power management support Date: Thu, 12 Jul 2018 15:05:03 -0400 Message-ID: <1531422306-6547-7-git-send-email-Bryan.Whitehead@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1531422306-6547-1-git-send-email-Bryan.Whitehead@microchip.com> References: <1531422306-6547-1-git-send-email-Bryan.Whitehead@microchip.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Implement power management. Supports suspend, resume, and Wake On LAN Signed-off-by: Bryan Whitehead --- drivers/net/ethernet/microchip/lan743x_ethtool.c | 48 ++++++ drivers/net/ethernet/microchip/lan743x_main.c | 184 +++++++++++++++++++++++ drivers/net/ethernet/microchip/lan743x_main.h | 47 ++++++ 3 files changed, 279 insertions(+) diff --git a/drivers/net/ethernet/microchip/lan743x_ethtool.c b/drivers/net/ethernet/microchip/lan743x_ethtool.c index f9ad237..f9d875d 100644 --- a/drivers/net/ethernet/microchip/lan743x_ethtool.c +++ b/drivers/net/ethernet/microchip/lan743x_ethtool.c @@ -415,6 +415,50 @@ static int lan743x_ethtool_get_sset_count(struct net_device *netdev, int sset) } } +#ifdef CONFIG_PM +static void lan743x_ethtool_get_wol(struct net_device *netdev, + struct ethtool_wolinfo *wol) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + wol->supported = WAKE_BCAST | WAKE_UCAST | WAKE_MCAST | + WAKE_MAGIC | WAKE_PHY | WAKE_ARP; + + wol->wolopts = adapter->wolopts; +} +#endif /* CONFIG_PM */ + +#ifdef CONFIG_PM +static int lan743x_ethtool_set_wol(struct net_device *netdev, + struct ethtool_wolinfo *wol) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + if (wol->wolopts & WAKE_MAGICSECURE) + return -EOPNOTSUPP; + + adapter->wolopts = 0; + if (wol->wolopts & WAKE_UCAST) + adapter->wolopts |= WAKE_UCAST; + if (wol->wolopts & WAKE_MCAST) + adapter->wolopts |= WAKE_MCAST; + if (wol->wolopts & WAKE_BCAST) + adapter->wolopts |= WAKE_BCAST; + if (wol->wolopts & WAKE_MAGIC) + adapter->wolopts |= WAKE_MAGIC; + if (wol->wolopts & WAKE_PHY) + adapter->wolopts |= WAKE_PHY; + if (wol->wolopts & WAKE_ARP) + adapter->wolopts |= WAKE_ARP; + + device_set_wakeup_enable(&adapter->pdev->dev, (bool)wol->wolopts); + + phy_ethtool_set_wol(netdev->phydev, wol); + + return 0; +} +#endif /* CONFIG_PM */ + const struct ethtool_ops lan743x_ethtool_ops = { .get_drvinfo = lan743x_ethtool_get_drvinfo, .get_msglevel = lan743x_ethtool_get_msglevel, @@ -429,4 +473,8 @@ const struct ethtool_ops lan743x_ethtool_ops = { .get_sset_count = lan743x_ethtool_get_sset_count, .get_link_ksettings = phy_ethtool_get_link_ksettings, .set_link_ksettings = phy_ethtool_set_link_ksettings, +#ifdef CONFIG_PM + .get_wol = lan743x_ethtool_get_wol, + .set_wol = lan743x_ethtool_set_wol, +#endif }; diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index 1e2f8c6..8e9eff8 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "lan743x_main.h" #include "lan743x_ethtool.h" @@ -2749,10 +2750,190 @@ static void lan743x_pcidev_shutdown(struct pci_dev *pdev) lan743x_netdev_close(netdev); rtnl_unlock(); +#ifdef CONFIG_PM + pci_save_state(pdev); +#endif + /* clean up lan743x portion */ lan743x_hardware_cleanup(adapter); } +#ifdef CONFIG_PM +static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) +{ + return bitrev16(crc16(0xFFFF, buf, len)); +} +#endif /* CONFIG_PM */ + +#ifdef CONFIG_PM +static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) +{ + const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; + const u8 ipv6_multicast[3] = { 0x33, 0x33 }; + const u8 arp_type[2] = { 0x08, 0x06 }; + int mask_index; + u32 pmtctl; + u32 wucsr; + u32 macrx; + u16 crc; + + for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) + lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); + + /* clear wake settings */ + pmtctl = lan743x_csr_read(adapter, PMT_CTL); + pmtctl |= PMT_CTL_WUPS_MASK_; + pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | + PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | + PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); + + macrx = lan743x_csr_read(adapter, MAC_RX); + + wucsr = 0; + mask_index = 0; + + pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; + + if (adapter->wolopts & WAKE_PHY) { + pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; + pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; + } + if (adapter->wolopts & WAKE_MAGIC) { + wucsr |= MAC_WUCSR_MPEN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + } + if (adapter->wolopts & WAKE_UCAST) { + wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; + } + if (adapter->wolopts & WAKE_BCAST) { + wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; + } + if (adapter->wolopts & WAKE_MCAST) { + /* IPv4 multicast */ + crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); + lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), + MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | + (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | + (crc & MAC_WUF_CFG_CRC16_MASK_)); + lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); + lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); + mask_index++; + + /* IPv6 multicast */ + crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); + lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), + MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | + (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | + (crc & MAC_WUF_CFG_CRC16_MASK_)); + lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); + lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); + mask_index++; + + wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; + } + if (adapter->wolopts & WAKE_ARP) { + /* set MAC_WUF_CFG & WUF_MASK + * for packettype (offset 12,13) = ARP (0x0806) + */ + crc = lan743x_pm_wakeframe_crc16(arp_type, 2); + lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), + MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | + (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | + (crc & MAC_WUF_CFG_CRC16_MASK_)); + lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); + lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); + mask_index++; + + wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; + } + + lan743x_csr_write(adapter, MAC_WUCSR, wucsr); + lan743x_csr_write(adapter, PMT_CTL, pmtctl); + lan743x_csr_write(adapter, MAC_RX, macrx); +} +#endif /* CONFIG_PM */ + +#ifdef CONFIG_PM +static int lan743x_pm_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct net_device *netdev = pci_get_drvdata(pdev); + struct lan743x_adapter *adapter = netdev_priv(netdev); + int ret; + + lan743x_pcidev_shutdown(pdev); + + /* clear all wakes */ + lan743x_csr_write(adapter, MAC_WUCSR, 0); + lan743x_csr_write(adapter, MAC_WUCSR2, 0); + lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); + + if (adapter->wolopts) + lan743x_pm_set_wol(adapter); + + /* Host sets PME_En, put D3hot */ + ret = pci_prepare_to_sleep(pdev); + + return 0; +} +#endif /* CONFIG_PM */ + +#ifdef CONFIG_PM +static int lan743x_pm_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct net_device *netdev = pci_get_drvdata(pdev); + struct lan743x_adapter *adapter = netdev_priv(netdev); + int ret; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + pci_save_state(pdev); + + ret = lan743x_hardware_init(adapter, pdev); + if (ret) { + netif_err(adapter, probe, adapter->netdev, + "lan743x_hardware_init returned %d\n", ret); + } + + /* open netdev when netdev is at running state while resume. + * For instance, it is true when system wakesup after pm-suspend + * However, it is false when system wakes up after suspend GUI menu + */ + if (netif_running(netdev)) + lan743x_netdev_open(netdev); + + netif_device_attach(netdev); + + return 0; +} +#endif /* CONFIG_PM */ + +#ifdef CONFIG_PM +const struct dev_pm_ops lan743x_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) +}; +#endif /*CONFIG_PM */ + static const struct pci_device_id lan743x_pcidev_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, { 0, } @@ -2763,6 +2944,9 @@ static struct pci_driver lan743x_pcidev_driver = { .id_table = lan743x_pcidev_tbl, .probe = lan743x_pcidev_probe, .remove = lan743x_pcidev_remove, +#ifdef CONFIG_PM + .driver.pm = &lan743x_pm_ops, +#endif .shutdown = lan743x_pcidev_shutdown, }; diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h index c026b8d..72b9beb 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.h +++ b/drivers/net/ethernet/microchip/lan743x_main.h @@ -24,8 +24,18 @@ #define HW_CFG_LRST_ BIT(1) #define PMT_CTL (0x014) +#define PMT_CTL_ETH_PHY_D3_COLD_OVR_ BIT(27) +#define PMT_CTL_MAC_D3_RX_CLK_OVR_ BIT(25) +#define PMT_CTL_ETH_PHY_EDPD_PLL_CTL_ BIT(24) +#define PMT_CTL_ETH_PHY_D3_OVR_ BIT(23) +#define PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ BIT(18) +#define PMT_CTL_GPIO_WAKEUP_EN_ BIT(15) +#define PMT_CTL_EEE_WAKEUP_EN_ BIT(13) #define PMT_CTL_READY_ BIT(7) #define PMT_CTL_ETH_PHY_RST_ BIT(4) +#define PMT_CTL_WOL_EN_ BIT(3) +#define PMT_CTL_ETH_PHY_WAKE_EN_ BIT(2) +#define PMT_CTL_WUPS_MASK_ (0x00000003) #define DP_SEL (0x024) #define DP_SEL_DPRDY_ BIT(31) @@ -107,6 +117,38 @@ #define MAC_MII_DATA (0x124) +#define MAC_WUCSR (0x140) +#define MAC_WUCSR_RFE_WAKE_EN_ BIT(14) +#define MAC_WUCSR_PFDA_EN_ BIT(3) +#define MAC_WUCSR_WAKE_EN_ BIT(2) +#define MAC_WUCSR_MPEN_ BIT(1) +#define MAC_WUCSR_BCST_EN_ BIT(0) + +#define MAC_WK_SRC (0x144) + +#define MAC_WUF_CFG0 (0x150) +#define MAC_NUM_OF_WUF_CFG (32) +#define MAC_WUF_CFG_BEGIN (MAC_WUF_CFG0) +#define MAC_WUF_CFG(index) (MAC_WUF_CFG_BEGIN + (4 * (index))) +#define MAC_WUF_CFG_EN_ BIT(31) +#define MAC_WUF_CFG_TYPE_MCAST_ (0x02000000) +#define MAC_WUF_CFG_TYPE_ALL_ (0x01000000) +#define MAC_WUF_CFG_OFFSET_SHIFT_ (16) +#define MAC_WUF_CFG_CRC16_MASK_ (0x0000FFFF) + +#define MAC_WUF_MASK0_0 (0x200) +#define MAC_WUF_MASK0_1 (0x204) +#define MAC_WUF_MASK0_2 (0x208) +#define MAC_WUF_MASK0_3 (0x20C) +#define MAC_WUF_MASK0_BEGIN (MAC_WUF_MASK0_0) +#define MAC_WUF_MASK1_BEGIN (MAC_WUF_MASK0_1) +#define MAC_WUF_MASK2_BEGIN (MAC_WUF_MASK0_2) +#define MAC_WUF_MASK3_BEGIN (MAC_WUF_MASK0_3) +#define MAC_WUF_MASK0(index) (MAC_WUF_MASK0_BEGIN + (0x10 * (index))) +#define MAC_WUF_MASK1(index) (MAC_WUF_MASK1_BEGIN + (0x10 * (index))) +#define MAC_WUF_MASK2(index) (MAC_WUF_MASK2_BEGIN + (0x10 * (index))) +#define MAC_WUF_MASK3(index) (MAC_WUF_MASK3_BEGIN + (0x10 * (index))) + /* offset 0x400 - 0x500, x may range from 0 to 32, for a total of 33 entries */ #define RFE_ADDR_FILT_HI(x) (0x400 + (8 * (x))) #define RFE_ADDR_FILT_HI_VALID_ BIT(31) @@ -121,6 +163,8 @@ #define RFE_CTL_MCAST_HASH_ BIT(3) #define RFE_CTL_DA_PERFECT_ BIT(1) +#define MAC_WUCSR2 (0x600) + #define INT_STS (0x780) #define INT_BIT_DMA_RX_(channel) BIT(24 + (channel)) #define INT_BIT_ALL_RX_ (0x0F000000) @@ -534,6 +578,9 @@ struct lan743x_adapter { struct net_device *netdev; struct mii_bus *mdiobus; int msg_enable; +#ifdef CONFIG_PM + u32 wolopts; +#endif struct pci_dev *pdev; struct lan743x_csr csr; struct lan743x_intr intr;