diff options
Diffstat (limited to 'drivers/net/dm9000.c')
| -rw-r--r-- | drivers/net/dm9000.c | 149 |
1 files changed, 138 insertions, 11 deletions
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c index 31b8bef49d2e..0cbe3c0e7c06 100644 --- a/drivers/net/dm9000.c +++ b/drivers/net/dm9000.c @@ -100,6 +100,7 @@ typedef struct board_info { unsigned int flags; unsigned int in_suspend :1; + unsigned int wake_supported :1; int debug_level; enum dm9000_type type; @@ -116,6 +117,8 @@ typedef struct board_info { struct resource *data_req; struct resource *irq_res; + int irq_wake; + struct mutex addr_lock; /* phy and eeprom access lock */ struct delayed_work phy_poll; @@ -125,6 +128,7 @@ typedef struct board_info { struct mii_if_info mii; u32 msg_enable; + u32 wake_state; int rx_csum; int can_csum; @@ -568,6 +572,54 @@ static int dm9000_set_eeprom(struct net_device *dev, return 0; } +static void dm9000_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) +{ + board_info_t *dm = to_dm9000_board(dev); + + memset(w, 0, sizeof(struct ethtool_wolinfo)); + + /* note, we could probably support wake-phy too */ + w->supported = dm->wake_supported ? WAKE_MAGIC : 0; + w->wolopts = dm->wake_state; +} + +static int dm9000_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) +{ + board_info_t *dm = to_dm9000_board(dev); + unsigned long flags; + u32 opts = w->wolopts; + u32 wcr = 0; + + if (!dm->wake_supported) + return -EOPNOTSUPP; + + if (opts & ~WAKE_MAGIC) + return -EINVAL; + + if (opts & WAKE_MAGIC) + wcr |= WCR_MAGICEN; + + mutex_lock(&dm->addr_lock); + + spin_lock_irqsave(&dm->lock, flags); + iow(dm, DM9000_WCR, wcr); + spin_unlock_irqrestore(&dm->lock, flags); + + mutex_unlock(&dm->addr_lock); + + if (dm->wake_state != opts) { + /* change in wol state, update IRQ state */ + + if (!dm->wake_state) + set_irq_wake(dm->irq_wake, 1); + else if (dm->wake_state & !opts) + set_irq_wake(dm->irq_wake, 0); + } + + dm->wake_state = opts; + return 0; +} + static const struct ethtool_ops dm9000_ethtool_ops = { .get_drvinfo = dm9000_get_drvinfo, .get_settings = dm9000_get_settings, @@ -576,6 +628,8 @@ static const struct ethtool_ops dm9000_ethtool_ops = { .set_msglevel = dm9000_set_msglevel, .nway_reset = dm9000_nway_reset, .get_link = dm9000_get_link, + .get_wol = dm9000_get_wol, + .set_wol = dm9000_set_wol, .get_eeprom_len = dm9000_get_eeprom_len, .get_eeprom = dm9000_get_eeprom, .set_eeprom = dm9000_set_eeprom, @@ -722,6 +776,7 @@ dm9000_init_dm9000(struct net_device *dev) { board_info_t *db = netdev_priv(dev); unsigned int imr; + unsigned int ncr; dm9000_dbg(db, 1, "entering %s\n", __func__); @@ -736,8 +791,15 @@ dm9000_init_dm9000(struct net_device *dev) iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ iow(db, DM9000_GPR, 0); /* Enable PHY */ - if (db->flags & DM9000_PLATF_EXT_PHY) - iow(db, DM9000_NCR, NCR_EXT_PHY); + ncr = (db->flags & DM9000_PLATF_EXT_PHY) ? NCR_EXT_PHY : 0; + + /* if wol is needed, then always set NCR_WAKEEN otherwise we end + * up dumping the wake events if we disable this. There is already + * a wake-mask in DM9000_WCR */ + if (db->wake_supported) + ncr |= NCR_WAKEEN; + + iow(db, DM9000_NCR, ncr); /* Program operating register */ iow(db, DM9000_TCR, 0); /* TX Polling clear */ @@ -962,8 +1024,8 @@ dm9000_rx(struct net_device *dev) } /* Move data from DM9000 */ - if (GoodPacket - && ((skb = dev_alloc_skb(RxLen + 4)) != NULL)) { + if (GoodPacket && + ((skb = dev_alloc_skb(RxLen + 4)) != NULL)) { skb_reserve(skb, 2); rdptr = (u8 *) skb_put(skb, RxLen - 4); @@ -1045,6 +1107,41 @@ static irqreturn_t dm9000_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } +static irqreturn_t dm9000_wol_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + board_info_t *db = netdev_priv(dev); + unsigned long flags; + unsigned nsr, wcr; + + spin_lock_irqsave(&db->lock, flags); + + nsr = ior(db, DM9000_NSR); + wcr = ior(db, DM9000_WCR); + + dev_dbg(db->dev, "%s: NSR=0x%02x, WCR=0x%02x\n", __func__, nsr, wcr); + + if (nsr & NSR_WAKEST) { + /* clear, so we can avoid */ + iow(db, DM9000_NSR, NSR_WAKEST); + + if (wcr & WCR_LINKST) + dev_info(db->dev, "wake by link status change\n"); + if (wcr & WCR_SAMPLEST) + dev_info(db->dev, "wake by sample packet\n"); + if (wcr & WCR_MAGICST ) + dev_info(db->dev, "wake by magic packet\n"); + if (!(wcr & (WCR_LINKST | WCR_SAMPLEST | WCR_MAGICST))) + dev_err(db->dev, "wake signalled with no reason? " + "NSR=0x%02x, WSR=0x%02x\n", nsr, wcr); + + } + + spin_unlock_irqrestore(&db->lock, flags); + + return (nsr & NSR_WAKEST) ? IRQ_HANDLED : IRQ_NONE; +} + #ifdef CONFIG_NET_POLL_CONTROLLER /* *Used by netconsole @@ -1078,7 +1175,7 @@ dm9000_open(struct net_device *dev) irqflags |= IRQF_SHARED; - if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev)) + if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev)) return -EAGAIN; /* Initialize DM9000 board */ @@ -1299,6 +1396,29 @@ dm9000_probe(struct platform_device *pdev) goto out; } + db->irq_wake = platform_get_irq(pdev, 1); + if (db->irq_wake >= 0) { + dev_dbg(db->dev, "wakeup irq %d\n", db->irq_wake); + + ret = request_irq(db->irq_wake, dm9000_wol_interrupt, + IRQF_SHARED, dev_name(db->dev), ndev); + if (ret) { + dev_err(db->dev, "cannot get wakeup irq (%d)\n", ret); + } else { + + /* test to see if irq is really wakeup capable */ + ret = set_irq_wake(db->irq_wake, 1); + if (ret) { + dev_err(db->dev, "irq %d cannot set wakeup (%d)\n", + db->irq_wake, ret); + ret = 0; + } else { + set_irq_wake(db->irq_wake, 0); + db->wake_supported = 1; + } + } + } + iosize = resource_size(db->addr_res); db->addr_req = request_mem_region(db->addr_res->start, iosize, pdev->name); @@ -1490,10 +1610,14 @@ dm9000_drv_suspend(struct device *dev) db = netdev_priv(ndev); db->in_suspend = 1; - if (netif_running(ndev)) { - netif_device_detach(ndev); + if (!netif_running(ndev)) + return 0; + + netif_device_detach(ndev); + + /* only shutdown if not using WoL */ + if (!db->wake_state) dm9000_shutdown(ndev); - } } return 0; } @@ -1506,10 +1630,13 @@ dm9000_drv_resume(struct device *dev) board_info_t *db = netdev_priv(ndev); if (ndev) { - if (netif_running(ndev)) { - dm9000_reset(db); - dm9000_init_dm9000(ndev); + /* reset if we were not in wake mode to ensure if + * the device was powered off it is in a known state */ + if (!db->wake_state) { + dm9000_reset(db); + dm9000_init_dm9000(ndev); + } netif_device_attach(ndev); } |