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path: root/drivers/net/ethernet/microchip/lan743x_main.c
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Diffstat (limited to 'drivers/net/ethernet/microchip/lan743x_main.c')
-rw-r--r--drivers/net/ethernet/microchip/lan743x_main.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index 1e2f8c67d022..30178f87fe5c 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -11,6 +11,7 @@
#include <linux/phy.h>
#include <linux/rtnetlink.h>
#include <linux/iopoll.h>
+#include <linux/crc16.h>
#include "lan743x_main.h"
#include "lan743x_ethtool.h"
@@ -2749,10 +2750,182 @@ 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));
+}
+
+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);
+}
+
+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;
+}
+
+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;
+}
+
+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 +2936,9 @@ 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,
};