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Date: Tue, 29 Jan 2008 13:02:13 -0800
From: Mitch Williams <mitch.a.williams@...el.com>
To: netdev@...r.kernel.org
Cc: jgarzik@...ox.com, davem@...emloft.net
Subject: [PATCH 2/3] Add flexible wake filter support to e1000e
Add support to e1000e for Wake-on-Lan flexible filters. This feature is
supported by all hardware that the driver supports.
Signed-off-by: Mitch Williams <mitch.a.williams@...el.com>
diff --git a/drivers/net/e1000e/defines.h b/drivers/net/e1000e/defines.h
index 6232c3e..3c18a09 100644
--- a/drivers/net/e1000e/defines.h
+++ b/drivers/net/e1000e/defines.h
@@ -65,6 +65,15 @@
#define E1000_WUFC_BC 0x00000010 /* Broadcast Wakeup Enable */
#define E1000_WUFC_ARP 0x00000020 /* ARP Request Packet Wakeup Enable */
+/* Four Flexible Filters are supported */
+#define E1000_FLEXIBLE_FILTER_COUNT_MAX 4
+#define E1000_WUFC_ALL_FILTERS 0x000F00FF /* Mask for all wakeup filters */
+#define E1000_WUFC_FLX_OFFSET 16 /* Offset to the Flexible Filters bits */
+#define E1000_WUFC_FLX_FILTERS 0x000F0000 /* Mask for the 4 flexible filters */
+
+/* Each Flexible Filter is at most 128 (0x80) bytes in length */
+#define E1000_FLEXIBLE_FILTER_SIZE_MAX 128
+
/* Extended Device Control */
#define E1000_CTRL_EXT_SDP7_DATA 0x00000080 /* Value of SW Defineable Pin 7 */
#define E1000_CTRL_EXT_EE_RST 0x00002000 /* Reinitialize from EEPROM */
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
index 8b88c22..da0538a 100644
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h
@@ -267,6 +267,7 @@ struct e1000_adapter {
unsigned long led_status;
unsigned int flags;
+ u32 wol_filters;
};
struct e1000_info {
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index 9fab444..25b7b4f 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -1633,7 +1633,8 @@ static void e1000_get_wol(struct net_device *netdev,
wol->supported = WAKE_UCAST | WAKE_MCAST |
WAKE_BCAST | WAKE_MAGIC |
- WAKE_PHY | WAKE_ARP;
+ WAKE_PHY | WAKE_ARP |
+ WAKE_FILTER;
/* apply any specific unsupported masks here */
if (adapter->flags & FLAG_NO_WAKE_UCAST) {
@@ -1656,6 +1657,8 @@ static void e1000_get_wol(struct net_device *netdev,
wol->wolopts |= WAKE_PHY;
if (adapter->wol & E1000_WUFC_ARP)
wol->wolopts |= WAKE_ARP;
+ if (adapter->wol & E1000_WUFC_FLX_FILTERS)
+ wol->wolopts |= WAKE_FILTER;
}
static int e1000_set_wol(struct net_device *netdev,
@@ -1684,6 +1687,95 @@ static int e1000_set_wol(struct net_device *netdev,
adapter->wol |= E1000_WUFC_LNKC;
if (wol->wolopts & WAKE_ARP)
adapter->wol |= E1000_WUFC_ARP;
+ if (wol->wolopts & WAKE_FILTER)
+ adapter->wol |= adapter->wol_filters;
+
+ return 0;
+}
+
+static int e1000_get_wol_filter(struct net_device *netdev,
+ struct ethtool_wol_filter *wolfilt,
+ u16 *mask_val)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 mask, mt_val, vt_val, fflt, shift;
+ int i;
+
+ if (wolfilt->cmd == ETHTOOL_GNUMWOLFILT) {
+ wolfilt->index = E1000_FLEXIBLE_FILTER_COUNT_MAX;
+ wolfilt->len = 0;
+ return 0;
+ }
+
+ if (wolfilt->index > E1000_FLEXIBLE_FILTER_COUNT_MAX)
+ return -EOPNOTSUPP;
+
+ mask = 1 << wolfilt->index;
+ shift = wolfilt->index * 8;
+
+ fflt = E1000_READ_REG_ARRAY(hw, E1000_FFLT, wolfilt->index*2);
+ wolfilt->len = fflt & 0xff;
+ for (i = 0; i < wolfilt->len; i++) {
+ mt_val = E1000_READ_REG_ARRAY(hw, E1000_FFMT, i*2);
+ vt_val = E1000_READ_REG_ARRAY(hw, E1000_FFVT, i*2);
+ mt_val &= mask;
+ vt_val = (vt_val >> shift) & 0xff;
+ if (!mt_val)
+ mask_val[i] = WOL_FILTER_IGNORE_OCTET | vt_val;
+ else
+ mask_val[i] = vt_val;
+ }
+
+ return 0;
+}
+
+static int e1000_set_wol_filter(struct net_device *netdev,
+ struct ethtool_wol_filter *wolfilt,
+ u16 *mask_val)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ int i, shift;
+ u32 mask, wufc, mt_val, vt_val, fflt;
+
+ if ((wolfilt->index > E1000_FLEXIBLE_FILTER_COUNT_MAX) ||
+ (wolfilt->len > E1000_FLEXIBLE_FILTER_SIZE_MAX))
+ return -EOPNOTSUPP;
+
+ wufc = er32(WUFC);
+ mask = 1 << wolfilt->index;
+ if (wolfilt->len) {
+ shift = wolfilt->index * 8;
+ /* first, disable all filters */
+ ew32(WUFC, (wufc & ~E1000_WUFC_FLX_FILTERS));
+ for (i = 0; i < wolfilt->len; i++) {
+ mt_val = E1000_READ_REG_ARRAY(hw, E1000_FFMT, i*2);
+ vt_val = E1000_READ_REG_ARRAY(hw, E1000_FFVT, i*2);
+ vt_val &= ~(0xffL << shift);
+ if (mask_val[i] & WOL_FILTER_IGNORE_OCTET)
+ mt_val &= ~mask;
+ else
+ mt_val |= mask;
+
+ vt_val |= ((mask_val[i] & 0xff) << shift);
+ E1000_WRITE_REG_ARRAY(hw, E1000_FFMT, i*2, mt_val);
+ E1000_WRITE_REG_ARRAY(hw, E1000_FFVT, i*2, vt_val);
+ }
+ adapter->wol_filters |= mask << E1000_WUFC_FLX_OFFSET;
+ } else {
+ /* account for zero-length filters */
+ adapter->wol_filters &= ~(mask << E1000_WUFC_FLX_OFFSET);
+ wufc &= ~(mask << E1000_WUFC_FLX_OFFSET);
+ }
+
+ fflt = E1000_READ_REG_ARRAY(hw, E1000_FFLT, wolfilt->index * 2);
+ fflt &= ~0xff;
+ fflt |= wolfilt->len;
+ E1000_WRITE_REG_ARRAY(hw, E1000_FFLT, wolfilt->index * 2, fflt);
+ /* restore active filter settings. This filter will not be
+ active until enabled with ETHTOOL_SWOL. */
+ ew32(WUFC, wufc);
return 0;
}
@@ -1789,6 +1881,8 @@ static const struct ethtool_ops e1000_ethtool_ops = {
.get_regs = e1000_get_regs,
.get_wol = e1000_get_wol,
.set_wol = e1000_set_wol,
+ .get_wol_filter = e1000_get_wol_filter,
+ .set_wol_filter = e1000_set_wol_filter,
.get_msglevel = e1000_get_msglevel,
.set_msglevel = e1000_set_msglevel,
.nway_reset = e1000_nway_reset,
diff --git a/drivers/net/e1000e/hw.h b/drivers/net/e1000e/hw.h
index 3c5862f..3979ec0 100644
--- a/drivers/net/e1000e/hw.h
+++ b/drivers/net/e1000e/hw.h
@@ -203,6 +203,8 @@ enum e1e_registers {
E1000_SWSM = 0x05B50, /* SW Semaphore */
E1000_FWSM = 0x05B54, /* FW Semaphore */
E1000_HICR = 0x08F00, /* Host Inteface Control */
+ E1000_FFMT = 0x09000, /* Flexible Filter Mask Table - RW Array */
+ E1000_FFVT = 0x09800, /* Flexible Filter Value Table - RW Array */
};
/* RSS registers */
--
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