[PATCH] b44: add wol

Adds wol to the driver.
This is a redo of a previous patch thanks to feedback from Francois Romieu.

Signed-off-by Gary Zambrano <zambrano@broadcom.com>

Signed-off-by: Jeff Garzik <jeff@garzik.org>

2 files changed, 80 insertions, 0 deletions

diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index 41b1618573c7..73ca729e4cd7 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -1450,6 +1450,41 @@ static void b44_poll_controller(struct net_device *dev)
 }
 #endif
 
+
+static void b44_setup_wol(struct b44 *bp)
+{
+        u32 val;
+        u16 pmval;
+
+        bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
+
+        if (bp->flags & B44_FLAG_B0_ANDLATER) {
+
+                bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
+
+                val = bp->dev->dev_addr[2] << 24 |
+                        bp->dev->dev_addr[3] << 16 |
+                        bp->dev->dev_addr[4] << 8 |
+                        bp->dev->dev_addr[5];
+                bw32(bp, B44_ADDR_LO, val);
+
+                val = bp->dev->dev_addr[0] << 8 |
+                        bp->dev->dev_addr[1];
+                bw32(bp, B44_ADDR_HI, val);
+
+                val = br32(bp, B44_DEVCTRL);
+                bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
+
+        }
+
+        val = br32(bp, B44_SBTMSLOW);
+        bw32(bp, B44_SBTMSLOW, val | SBTMSLOW_PE);
+
+        pci_read_config_word(bp->pdev, SSB_PMCSR, &pmval);
+        pci_write_config_word(bp->pdev, SSB_PMCSR, pmval | SSB_PE);
+
+}
+
 static int b44_close(struct net_device *dev)
 {
         struct b44 *bp = netdev_priv(dev);
@@ -1475,6 +1510,11 @@ static int b44_close(struct net_device *dev)
 
         netif_poll_enable(dev);
 
+        if (bp->flags & B44_FLAG_WOL_ENABLE) {
+                b44_init_hw(bp);
+                b44_setup_wol(bp);
+        }
+
         b44_free_consistent(bp);
 
         return 0;
@@ -1831,12 +1871,40 @@ static void b44_get_ethtool_stats(struct net_device *dev,
         spin_unlock_irq(&bp->lock);
 }
 
+static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+        struct b44 *bp = netdev_priv(dev);
+
+        wol->supported = WAKE_MAGIC;
+        if (bp->flags & B44_FLAG_WOL_ENABLE)
+                wol->wolopts = WAKE_MAGIC;
+        else
+                wol->wolopts = 0;
+        memset(&wol->sopass, 0, sizeof(wol->sopass));
+}
+
+static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+        struct b44 *bp = netdev_priv(dev);
+
+        spin_lock_irq(&bp->lock);
+        if (wol->wolopts & WAKE_MAGIC)
+                bp->flags |= B44_FLAG_WOL_ENABLE;
+        else
+                bp->flags &= ~B44_FLAG_WOL_ENABLE;
+        spin_unlock_irq(&bp->lock);
+
+        return 0;
+}
+
 static struct ethtool_ops b44_ethtool_ops = {
         .get_drvinfo            = b44_get_drvinfo,
         .get_settings           = b44_get_settings,
         .set_settings           = b44_set_settings,
         .nway_reset             = b44_nway_reset,
         .get_link               = ethtool_op_get_link,
+        .get_wol                = b44_get_wol,
+        .set_wol                = b44_set_wol,
         .get_ringparam          = b44_get_ringparam,
         .set_ringparam          = b44_set_ringparam,
         .get_pauseparam         = b44_get_pauseparam,
@@ -1915,6 +1983,10 @@ static int __devinit b44_get_invariants(struct b44 *bp)
         /* XXX - really required?
            bp->flags |= B44_FLAG_BUGGY_TXPTR;
          */
+
+        if (ssb_get_core_rev(bp) >= 7)
+                bp->flags |= B44_FLAG_B0_ANDLATER;
+
 out:
         return err;
 }
@@ -2115,6 +2187,10 @@ static int b44_suspend(struct pci_dev *pdev, pm_message_t state)
         spin_unlock_irq(&bp->lock);
 
         free_irq(dev->irq, dev);
+        if (bp->flags & B44_FLAG_WOL_ENABLE) {
+                b44_init_hw(bp);
+                b44_setup_wol(bp);
+        }
         pci_disable_device(pdev);
         return 0;
 }
diff --git a/drivers/net/b44.h b/drivers/net/b44.h
index b178662978f3..1f47777b848b 100644
--- a/drivers/net/b44.h
+++ b/drivers/net/b44.h
@@ -264,6 +264,8 @@
 #define  SBIDHIGH_VC_SHIFT      16
 
 /* SSB PCI config space registers.  */
+#define SSB_PMCSR               0x44
+#define  SSB_PE                 0x100
 #define SSB_BAR0_WIN            0x80
 #define SSB_BAR1_WIN            0x84
 #define SSB_SPROM_CONTROL       0x88
@@ -420,6 +422,7 @@ struct b44 {
 
         u32                     dma_offset;
         u32                     flags;
+#define B44_FLAG_B0_ANDLATER    0x00000001
 #define B44_FLAG_BUGGY_TXPTR    0x00000002
 #define B44_FLAG_REORDER_BUG    0x00000004
 #define B44_FLAG_PAUSE_AUTO     0x00008000
@@ -435,6 +438,7 @@ struct b44 {
 #define B44_FLAG_INTERNAL_PHY   0x10000000
 #define B44_FLAG_RX_RING_HACK   0x20000000
 #define B44_FLAG_TX_RING_HACK   0x40000000
+#define B44_FLAG_WOL_ENABLE     0x80000000
 
         u32                     rx_offset;