diff mbox series

[22/70] net/e1000/base: add EEE support for i225

Message ID 20200622064634.70941-23-guinanx.sun@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Qi Zhang
Headers show
Series update e1000 base code | expand

Checks

Context Check Description
ci/Intel-compilation success Compilation OK
ci/checkpatch success coding style OK

Commit Message

Guinan Sun June 22, 2020, 6:45 a.m. UTC
This patch adds function e1000_set_eee_i225 which
support EEE advertisement for 2.5G.

Signed-off-by: Lotem Leder <lotem.leder@intel.com>
Signed-off-by: Guinan Sun <guinanx.sun@intel.com>
---
 drivers/net/e1000/base/e1000_defines.h |  1 +
 drivers/net/e1000/base/e1000_i225.c    | 70 ++++++++++++++++++++++++++
 2 files changed, 71 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/e1000/base/e1000_defines.h b/drivers/net/e1000/base/e1000_defines.h
index 141cdcc60..03006cd6e 100644
--- a/drivers/net/e1000/base/e1000_defines.h
+++ b/drivers/net/e1000/base/e1000_defines.h
@@ -821,6 +821,7 @@ 
 #define E1000_THSTAT_LINK_THROTTLE	0x00000002 /* Link Spd Throttle Event */
 
 /* I350 EEE defines */
+#define E1000_IPCNFG_EEE_2_5G_AN	0x00000010 /* IPCNFG EEE Ena 2.5G AN */
 #define E1000_IPCNFG_EEE_1G_AN		0x00000008 /* IPCNFG EEE Ena 1G AN */
 #define E1000_IPCNFG_EEE_100M_AN	0x00000004 /* IPCNFG EEE Ena 100M AN */
 #define E1000_EEER_TX_LPI_EN		0x00010000 /* EEER Tx LPI Enable */
diff --git a/drivers/net/e1000/base/e1000_i225.c b/drivers/net/e1000/base/e1000_i225.c
index dbebb6fa3..87ccf6d9c 100644
--- a/drivers/net/e1000/base/e1000_i225.c
+++ b/drivers/net/e1000/base/e1000_i225.c
@@ -1205,3 +1205,73 @@  s32 e1000_set_d3_lplu_state_i225(struct e1000_hw *hw, bool active)
 	E1000_WRITE_REG(hw, E1000_I225_PHPM, data);
 	return E1000_SUCCESS;
 }
+
+
+/**
+ *  e1000_set_eee_i225 - Enable/disable EEE support
+ *  @hw: pointer to the HW structure
+ *  @adv2p5G: boolean flag enabling 2.5G EEE advertisement
+ *  @adv1G: boolean flag enabling 1G EEE advertisement
+ *  @adv100M: boolean flag enabling 100M EEE advertisement
+ *
+ *  Enable/disable EEE based on setting in dev_spec structure.
+ *
+ **/
+s32 e1000_set_eee_i225(struct e1000_hw *hw, bool adv2p5G, bool adv1G,
+		       bool adv100M)
+{
+	u32 ipcnfg, eeer;
+
+	DEBUGFUNC("e1000_set_eee_i225");
+
+	if (hw->mac.type != e1000_i225 ||
+	    hw->phy.media_type != e1000_media_type_copper)
+		goto out;
+	ipcnfg = E1000_READ_REG(hw, E1000_IPCNFG);
+	eeer = E1000_READ_REG(hw, E1000_EEER);
+
+	/* enable or disable per user setting */
+	if (!(hw->dev_spec._82575.eee_disable)) {
+		u32 eee_su = E1000_READ_REG(hw, E1000_EEE_SU);
+
+		if (adv100M)
+			ipcnfg |= E1000_IPCNFG_EEE_100M_AN;
+		else
+			ipcnfg &= ~E1000_IPCNFG_EEE_100M_AN;
+
+		if (adv1G)
+			ipcnfg |= E1000_IPCNFG_EEE_1G_AN;
+		else
+			ipcnfg &= ~E1000_IPCNFG_EEE_1G_AN;
+
+		if (adv2p5G)
+			ipcnfg |= E1000_IPCNFG_EEE_2_5G_AN;
+		else
+			ipcnfg &= ~E1000_IPCNFG_EEE_2_5G_AN;
+
+		eeer |= (E1000_EEER_TX_LPI_EN | E1000_EEER_RX_LPI_EN |
+			E1000_EEER_LPI_FC);
+
+#ifndef EXTERNAL_RELEASE
+		/*
+		 * This bit is supposed to be cleared by the NVM. However, older
+		 * NVMs may not have done this (Springville HW HSD #359296).
+		 */
+#endif /* EXTERNAL_RELEASE */
+		/* This bit should not be set in normal operation. */
+		if (eee_su & E1000_EEE_SU_LPI_CLK_STP)
+			DEBUGOUT("LPI Clock Stop Bit should not be set!\n");
+	} else {
+		ipcnfg &= ~(E1000_IPCNFG_EEE_2_5G_AN | E1000_IPCNFG_EEE_1G_AN |
+			E1000_IPCNFG_EEE_100M_AN);
+		eeer &= ~(E1000_EEER_TX_LPI_EN | E1000_EEER_RX_LPI_EN |
+			E1000_EEER_LPI_FC);
+	}
+	E1000_WRITE_REG(hw, E1000_IPCNFG, ipcnfg);
+	E1000_WRITE_REG(hw, E1000_EEER, eeer);
+	E1000_READ_REG(hw, E1000_IPCNFG);
+	E1000_READ_REG(hw, E1000_EEER);
+out:
+
+	return E1000_SUCCESS;
+}