Commit 4d94282a authored by Bryan Whitehead's avatar Bryan Whitehead Committed by David S. Miller
Browse files

lan743x: Add power management support



Implement power management
Supports suspend, resume, and Wake on LAN
Signed-off-by: default avatarBryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 69584604
......@@ -415,6 +415,49 @@ 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 = 0;
wol->wolopts = 0;
phy_ethtool_get_wol(netdev->phydev, wol);
wol->supported |= WAKE_BCAST | WAKE_UCAST | WAKE_MCAST |
WAKE_MAGIC | WAKE_PHY | WAKE_ARP;
wol->wolopts |= adapter->wolopts;
}
static int lan743x_ethtool_set_wol(struct net_device *netdev,
struct ethtool_wolinfo *wol)
{
struct lan743x_adapter *adapter = netdev_priv(netdev);
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 +472,8 @@ 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
};
......@@ -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,
};
......
......@@ -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;
......
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