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Date: Mon, 31 May 2010 18:34:43 -0400
From: Steven Walter <stevenrwalter@...il.com>
To: grundler@...isc-linux.org, kyle@...artin.ca, netdev@...r.kernel.org
Cc: Steven Walter <stevenrwalter@...il.com>
Subject: [PATCH 2/2] tulip: implement wake-on-lan support
Based on a patch from http://simon.baatz.info/wol-support-for-an983b/
Tested to resume from suspend by magic packet.
Signed-off-by: Steven Walter <stevenrwalter@...il.com>
---
drivers/net/tulip/tulip.h | 64 +++++++++++++++++------
drivers/net/tulip/tulip_core.c | 115 +++++++++++++++++++++++++++++++++++++---
2 files changed, 156 insertions(+), 23 deletions(-)
diff --git a/drivers/net/tulip/tulip.h b/drivers/net/tulip/tulip.h
index 0afa2d4..e525875 100644
--- a/drivers/net/tulip/tulip.h
+++ b/drivers/net/tulip/tulip.h
@@ -20,6 +20,7 @@
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/netdevice.h>
+#include <linux/ethtool.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/pci.h>
@@ -51,22 +52,23 @@ struct tulip_chip_table {
enum tbl_flag {
- HAS_MII = 0x0001,
- HAS_MEDIA_TABLE = 0x0002,
- CSR12_IN_SROM = 0x0004,
- ALWAYS_CHECK_MII = 0x0008,
- HAS_ACPI = 0x0010,
- MC_HASH_ONLY = 0x0020, /* Hash-only multicast filter. */
- HAS_PNICNWAY = 0x0080,
- HAS_NWAY = 0x0040, /* Uses internal NWay xcvr. */
- HAS_INTR_MITIGATION = 0x0100,
- IS_ASIX = 0x0200,
- HAS_8023X = 0x0400,
- COMET_MAC_ADDR = 0x0800,
- HAS_PCI_MWI = 0x1000,
- HAS_PHY_IRQ = 0x2000,
- HAS_SWAPPED_SEEPROM = 0x4000,
- NEEDS_FAKE_MEDIA_TABLE = 0x8000,
+ HAS_MII = 0x00001,
+ HAS_MEDIA_TABLE = 0x00002,
+ CSR12_IN_SROM = 0x00004,
+ ALWAYS_CHECK_MII = 0x00008,
+ HAS_ACPI = 0x00010,
+ MC_HASH_ONLY = 0x00020, /* Hash-only multicast filter. */
+ HAS_PNICNWAY = 0x00080,
+ HAS_NWAY = 0x00040, /* Uses internal NWay xcvr. */
+ HAS_INTR_MITIGATION = 0x00100,
+ IS_ASIX = 0x00200,
+ HAS_8023X = 0x00400,
+ COMET_MAC_ADDR = 0x00800,
+ HAS_PCI_MWI = 0x01000,
+ HAS_PHY_IRQ = 0x02000,
+ HAS_SWAPPED_SEEPROM = 0x04000,
+ NEEDS_FAKE_MEDIA_TABLE = 0x08000,
+ COMET_PM = 0x10000,
};
@@ -120,6 +122,11 @@ enum tulip_offsets {
CSR13 = 0x68,
CSR14 = 0x70,
CSR15 = 0x78,
+ CSR18 = 0x88,
+ CSR19 = 0x8c,
+ CSR20 = 0x90,
+ CSR27 = 0xAC,
+ CSR28 = 0xB0,
};
/* register offset and bits for CFDD PCI config reg */
@@ -289,6 +296,30 @@ enum t21143_csr6_bits {
csr6_mask_100bt = (csr6_scr | csr6_pcs | csr6_hbd),
};
+enum tulip_comet_csr13_bits {
+/* The LINKOFFE and LINKONE work in conjunction with LSCE, i.e. they
+ * determine which link status transition wakes up if LSCE is
+ * enabled */
+ comet_csr13_linkoffe = (1 << 17),
+ comet_csr13_linkone = (1 << 16),
+ comet_csr13_wfre = (1 << 10),
+ comet_csr13_mpre = (1 << 9),
+ comet_csr13_lsce = (1 << 8),
+ comet_csr13_wfr = (1 << 2),
+ comet_csr13_mpr = (1 << 1),
+ comet_csr13_lsc = (1 << 0),
+};
+
+enum tulip_comet_csr18_bits {
+ comet_csr18_pmes_sticky = (1 << 24),
+ comet_csr18_pm_mode = (1 << 19),
+ comet_csr18_apm_mode = (1 << 18),
+ comet_csr18_d3a = (1 << 7)
+};
+
+enum tulip_comet_csr20_bits {
+ comet_csr20_pmes = (1 << 15),
+};
/* Keep the ring sizes a power of two for efficiency.
Making the Tx ring too large decreases the effectiveness of channel
@@ -411,6 +442,7 @@ struct tulip_private {
unsigned int csr6; /* Current CSR6 control settings. */
unsigned char eeprom[EEPROM_SIZE]; /* Serial EEPROM contents. */
void (*link_change) (struct net_device * dev, int csr5);
+ struct ethtool_wolinfo wolinfo; /* WOL settings */
u16 sym_advertise, mii_advertise; /* NWay capabilities advertised. */
u16 lpar; /* 21143 Link partner ability. */
u16 advertising[4];
diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c
index bb8c0ee..f57fcf8 100644
--- a/drivers/net/tulip/tulip_core.c
+++ b/drivers/net/tulip/tulip_core.c
@@ -30,7 +30,6 @@
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/mii.h>
-#include <linux/ethtool.h>
#include <linux/crc32.h>
#include <asm/unaligned.h>
#include <asm/uaccess.h>
@@ -272,6 +271,7 @@ static void tulip_down(struct net_device *dev);
static struct net_device_stats *tulip_get_stats(struct net_device *dev);
static int private_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static void set_rx_mode(struct net_device *dev);
+static void tulip_set_wolopts(struct pci_dev *pdev, u32 wolopts);
#ifdef CONFIG_NET_POLL_CONTROLLER
static void poll_tulip(struct net_device *dev);
#endif
@@ -309,6 +309,11 @@ static void tulip_up(struct net_device *dev)
/* Wake the chip from sleep/snooze mode. */
tulip_set_power_state (tp, 0, 0);
+ /* Disable all WOL events */
+ pci_enable_wake(tp->pdev, PCI_D3hot, 0);
+ pci_enable_wake(tp->pdev, PCI_D3cold, 0);
+ tulip_set_wolopts(tp->pdev, 0);
+
/* On some chip revs we must set the MII/SYM port before the reset!? */
if (tp->mii_cnt || (tp->mtable && tp->mtable->has_mii))
iowrite32(0x00040000, ioaddr + CSR6);
@@ -345,8 +350,8 @@ static void tulip_up(struct net_device *dev)
} else if (tp->flags & COMET_MAC_ADDR) {
iowrite32(addr_low, ioaddr + 0xA4);
iowrite32(addr_high, ioaddr + 0xA8);
- iowrite32(0, ioaddr + 0xAC);
- iowrite32(0, ioaddr + 0xB0);
+ iowrite32(0, ioaddr + CSR27);
+ iowrite32(0, ioaddr + CSR28);
}
} else {
/* This is set_rx_mode(), but without starting the transmitter. */
@@ -878,8 +883,35 @@ static void tulip_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *in
strcpy(info->bus_info, pci_name(np->pdev));
}
+
+static int tulip_ethtool_set_wol(struct net_device *dev,
+ struct ethtool_wolinfo *wolinfo)
+{
+ struct tulip_private *tp = netdev_priv(dev);
+
+ if (wolinfo->wolopts & (~tp->wolinfo.supported))
+ return -EOPNOTSUPP;
+
+ tp->wolinfo.wolopts = wolinfo->wolopts;
+ device_set_wakeup_enable(&tp->pdev->dev, tp->wolinfo.wolopts);
+ return 0;
+}
+
+static void tulip_ethtool_get_wol(struct net_device *dev,
+ struct ethtool_wolinfo *wolinfo)
+{
+ struct tulip_private *tp = netdev_priv(dev);
+
+ wolinfo->supported = tp->wolinfo.supported;
+ wolinfo->wolopts = tp->wolinfo.wolopts;
+ return;
+}
+
+
static const struct ethtool_ops ops = {
- .get_drvinfo = tulip_get_drvinfo
+ .get_drvinfo = tulip_get_drvinfo,
+ .set_wol = tulip_ethtool_set_wol,
+ .get_wol = tulip_ethtool_get_wol,
};
/* Provide ioctl() calls to examine the MII xcvr state. */
@@ -1092,8 +1124,8 @@ static void set_rx_mode(struct net_device *dev)
iowrite32(3, ioaddr + CSR13);
iowrite32(mc_filter[1], ioaddr + CSR14);
} else if (tp->flags & COMET_MAC_ADDR) {
- iowrite32(mc_filter[0], ioaddr + 0xAC);
- iowrite32(mc_filter[1], ioaddr + 0xB0);
+ iowrite32(mc_filter[0], ioaddr + CSR27);
+ iowrite32(mc_filter[1], ioaddr + CSR28);
}
tp->mc_filter[0] = mc_filter[0];
tp->mc_filter[1] = mc_filter[1];
@@ -1433,6 +1465,19 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
tp->chip_id = chip_idx;
tp->flags = tulip_tbl[chip_idx].flags;
+
+ tp->wolinfo.supported = 0;
+ tp->wolinfo.wolopts = 0;
+ /* COMET: Enable power management only for AN983B */
+ if (chip_idx == COMET ) {
+ u32 sig;
+ pci_read_config_dword (pdev, 0x80, &sig);
+ if (sig == 0x09811317) {
+ tp->flags |= COMET_PM;
+ tp->wolinfo.supported = WAKE_PHY | WAKE_MAGIC;
+ printk(KERN_INFO "tulip_init_one: Enabled WOL support for AN983B\n");
+ }
+ }
tp->pdev = pdev;
tp->base_addr = ioaddr;
tp->revision = pdev->revision;
@@ -1765,11 +1810,43 @@ err_out_free_netdev:
}
+/* set the registers according to the given wolopts */
+static void tulip_set_wolopts (struct pci_dev *pdev, u32 wolopts)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct tulip_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->base_addr;
+
+ if (tp->flags & COMET_PM) {
+
+ unsigned int tmp;
+
+ tmp = ioread32(ioaddr + CSR18);
+ tmp &= ~(comet_csr18_pmes_sticky | comet_csr18_apm_mode | comet_csr18_d3a);
+ tmp |= comet_csr18_pm_mode;
+ iowrite32(tmp, ioaddr + CSR18);
+
+ /* Set the Wake-up Control/Status Register to the given WOL options*/
+ tmp = ioread32(ioaddr + CSR13);
+ tmp &= ~(comet_csr13_linkoffe | comet_csr13_linkone | comet_csr13_wfre | comet_csr13_lsce | comet_csr13_mpre);
+ if (wolopts & WAKE_MAGIC)
+ tmp |= comet_csr13_mpre;
+ if (wolopts & WAKE_PHY)
+ tmp |= comet_csr13_linkoffe | comet_csr13_linkone | comet_csr13_lsce;
+ /* Clear the event flags */
+ tmp |= comet_csr13_wfr | comet_csr13_mpr | comet_csr13_lsc;
+ iowrite32(tmp, ioaddr + CSR13);
+ }
+}
+
#ifdef CONFIG_PM
+
static int tulip_suspend (struct pci_dev *pdev, pm_message_t state)
{
+ pci_power_t pstate;
struct net_device *dev = pci_get_drvdata(pdev);
+ struct tulip_private *tp = netdev_priv(dev);
if (!dev)
return -EINVAL;
@@ -1785,7 +1862,16 @@ static int tulip_suspend (struct pci_dev *pdev, pm_message_t state)
save_state:
pci_save_state(pdev);
pci_disable_device(pdev);
- pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ pstate = pci_choose_state(pdev, state);
+ if (state.event == PM_EVENT_SUSPEND && pstate != PCI_D0) {
+ int rc;
+
+ tulip_set_wolopts(pdev, tp->wolinfo.wolopts);
+ rc = pci_enable_wake(pdev, pstate, tp->wolinfo.wolopts);
+ if (rc)
+ printk("tulip: pci_enable_wake failed (%d)\n", rc);
+ }
+ pci_set_power_state(pdev, pstate);
return 0;
}
@@ -1794,7 +1880,10 @@ save_state:
static int tulip_resume(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
+ struct tulip_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->base_addr;
int retval;
+ unsigned int tmp;
if (!dev)
return -EINVAL;
@@ -1815,6 +1904,18 @@ static int tulip_resume(struct pci_dev *pdev)
return retval;
}
+ if (tp->flags & COMET_PM) {
+ pci_enable_wake(pdev, PCI_D3hot, 0);
+ pci_enable_wake(pdev, PCI_D3cold, 0);
+
+ /* Clear the PMES flag */
+ tmp = ioread32(ioaddr + CSR20);
+ tmp |= comet_csr20_pmes;
+ iowrite32(tmp, ioaddr + CSR20);
+
+ /* Disable all wake-up events */
+ tulip_set_wolopts(pdev, 0);
+ }
netif_device_attach(dev);
if (netif_running(dev))
--
1.6.3.3
--
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