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path: root/drivers/net/ixgbe/ixgbe_82599.c
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Diffstat (limited to 'drivers/net/ixgbe/ixgbe_82599.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_82599.c178
1 files changed, 175 insertions, 3 deletions
diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index 34b04924c8a1..72106898a5cb 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -42,6 +42,10 @@ s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
ixgbe_link_speed speed,
bool autoneg,
bool autoneg_wait_to_complete);
+static s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
+ ixgbe_link_speed speed,
+ bool autoneg,
+ bool autoneg_wait_to_complete);
s32 ixgbe_start_mac_link_82599(struct ixgbe_hw *hw,
bool autoneg_wait_to_complete);
s32 ixgbe_setup_mac_link_82599(struct ixgbe_hw *hw,
@@ -64,7 +68,13 @@ static void ixgbe_init_mac_link_ops_82599(struct ixgbe_hw *hw)
/* Set up dual speed SFP+ support */
mac->ops.setup_link = &ixgbe_setup_mac_link_multispeed_fiber;
} else {
- mac->ops.setup_link = &ixgbe_setup_mac_link_82599;
+ if ((mac->ops.get_media_type(hw) ==
+ ixgbe_media_type_backplane) &&
+ (hw->phy.smart_speed == ixgbe_smart_speed_auto ||
+ hw->phy.smart_speed == ixgbe_smart_speed_on))
+ mac->ops.setup_link = &ixgbe_setup_mac_link_smartspeed;
+ else
+ mac->ops.setup_link = &ixgbe_setup_mac_link_82599;
}
}
@@ -337,6 +347,7 @@ static enum ixgbe_media_type ixgbe_get_media_type_82599(struct ixgbe_hw *hw)
media_type = ixgbe_media_type_backplane;
break;
case IXGBE_DEV_ID_82599_SFP:
+ case IXGBE_DEV_ID_82599_SFP_EM:
media_type = ixgbe_media_type_fiber;
break;
case IXGBE_DEV_ID_82599_CX4:
@@ -479,7 +490,12 @@ s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
hw->mac.autotry_restart = false;
}
- /* The controller may take up to 500ms at 10g to acquire link */
+ /*
+ * Wait for the controller to acquire link. Per IEEE 802.3ap,
+ * Section 73.10.2, we may have to wait up to 500ms if KR is
+ * attempted. 82599 uses the same timing for 10g SFI.
+ */
+
for (i = 0; i < 5; i++) {
/* Wait for the link partner to also set speed */
msleep(100);
@@ -567,6 +583,111 @@ out:
}
/**
+ * ixgbe_setup_mac_link_smartspeed - Set MAC link speed using SmartSpeed
+ * @hw: pointer to hardware structure
+ * @speed: new link speed
+ * @autoneg: true if autonegotiation enabled
+ * @autoneg_wait_to_complete: true when waiting for completion is needed
+ *
+ * Implements the Intel SmartSpeed algorithm.
+ **/
+static s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
+ ixgbe_link_speed speed, bool autoneg,
+ bool autoneg_wait_to_complete)
+{
+ s32 status = 0;
+ ixgbe_link_speed link_speed;
+ s32 i, j;
+ bool link_up = false;
+ u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
+
+ hw_dbg(hw, "ixgbe_setup_mac_link_smartspeed.\n");
+
+ /* Set autoneg_advertised value based on input link speed */
+ hw->phy.autoneg_advertised = 0;
+
+ if (speed & IXGBE_LINK_SPEED_10GB_FULL)
+ hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
+
+ if (speed & IXGBE_LINK_SPEED_1GB_FULL)
+ hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
+
+ if (speed & IXGBE_LINK_SPEED_100_FULL)
+ hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_100_FULL;
+
+ /*
+ * Implement Intel SmartSpeed algorithm. SmartSpeed will reduce the
+ * autoneg advertisement if link is unable to be established at the
+ * highest negotiated rate. This can sometimes happen due to integrity
+ * issues with the physical media connection.
+ */
+
+ /* First, try to get link with full advertisement */
+ hw->phy.smart_speed_active = false;
+ for (j = 0; j < IXGBE_SMARTSPEED_MAX_RETRIES; j++) {
+ status = ixgbe_setup_mac_link_82599(hw, speed, autoneg,
+ autoneg_wait_to_complete);
+ if (status)
+ goto out;
+
+ /*
+ * Wait for the controller to acquire link. Per IEEE 802.3ap,
+ * Section 73.10.2, we may have to wait up to 500ms if KR is
+ * attempted, or 200ms if KX/KX4/BX/BX4 is attempted, per
+ * Table 9 in the AN MAS.
+ */
+ for (i = 0; i < 5; i++) {
+ mdelay(100);
+
+ /* If we have link, just jump out */
+ hw->mac.ops.check_link(hw, &link_speed,
+ &link_up, false);
+ if (link_up)
+ goto out;
+ }
+ }
+
+ /*
+ * We didn't get link. If we advertised KR plus one of KX4/KX
+ * (or BX4/BX), then disable KR and try again.
+ */
+ if (((autoc_reg & IXGBE_AUTOC_KR_SUPP) == 0) ||
+ ((autoc_reg & IXGBE_AUTOC_KX4_KX_SUPP_MASK) == 0))
+ goto out;
+
+ /* Turn SmartSpeed on to disable KR support */
+ hw->phy.smart_speed_active = true;
+ status = ixgbe_setup_mac_link_82599(hw, speed, autoneg,
+ autoneg_wait_to_complete);
+ if (status)
+ goto out;
+
+ /*
+ * Wait for the controller to acquire link. 600ms will allow for
+ * the AN link_fail_inhibit_timer as well for multiple cycles of
+ * parallel detect, both 10g and 1g. This allows for the maximum
+ * connect attempts as defined in the AN MAS table 73-7.
+ */
+ for (i = 0; i < 6; i++) {
+ mdelay(100);
+
+ /* If we have link, just jump out */
+ hw->mac.ops.check_link(hw, &link_speed,
+ &link_up, false);
+ if (link_up)
+ goto out;
+ }
+
+ /* We didn't get link. Turn SmartSpeed back off. */
+ hw->phy.smart_speed_active = false;
+ status = ixgbe_setup_mac_link_82599(hw, speed, autoneg,
+ autoneg_wait_to_complete);
+
+out:
+ return status;
+}
+
+/**
* ixgbe_check_mac_link_82599 - Determine link and speed status
* @hw: pointer to hardware structure
* @speed: pointer to link speed
@@ -669,7 +790,8 @@ s32 ixgbe_setup_mac_link_82599(struct ixgbe_hw *hw,
if (speed & IXGBE_LINK_SPEED_10GB_FULL)
if (orig_autoc & IXGBE_AUTOC_KX4_SUPP)
autoc |= IXGBE_AUTOC_KX4_SUPP;
- if (orig_autoc & IXGBE_AUTOC_KR_SUPP)
+ if ((orig_autoc & IXGBE_AUTOC_KR_SUPP) &&
+ (hw->phy.smart_speed_active == false))
autoc |= IXGBE_AUTOC_KR_SUPP;
if (speed & IXGBE_LINK_SPEED_1GB_FULL)
autoc |= IXGBE_AUTOC_KX_SUPP;
@@ -878,6 +1000,10 @@ static s32 ixgbe_reset_hw_82599(struct ixgbe_hw *hw)
hw->mac.num_rar_entries--;
}
+ /* Store the alternative WWNN/WWPN prefix */
+ hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
+ &hw->mac.wwpn_prefix);
+
reset_hw_out:
return status;
}
@@ -2414,6 +2540,51 @@ fw_version_out:
return status;
}
+/**
+ * ixgbe_get_wwn_prefix_82599 - Get alternative WWNN/WWPN prefix from
+ * the EEPROM
+ * @hw: pointer to hardware structure
+ * @wwnn_prefix: the alternative WWNN prefix
+ * @wwpn_prefix: the alternative WWPN prefix
+ *
+ * This function will read the EEPROM from the alternative SAN MAC address
+ * block to check the support for the alternative WWNN/WWPN prefix support.
+ **/
+static s32 ixgbe_get_wwn_prefix_82599(struct ixgbe_hw *hw, u16 *wwnn_prefix,
+ u16 *wwpn_prefix)
+{
+ u16 offset, caps;
+ u16 alt_san_mac_blk_offset;
+
+ /* clear output first */
+ *wwnn_prefix = 0xFFFF;
+ *wwpn_prefix = 0xFFFF;
+
+ /* check if alternative SAN MAC is supported */
+ hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR,
+ &alt_san_mac_blk_offset);
+
+ if ((alt_san_mac_blk_offset == 0) ||
+ (alt_san_mac_blk_offset == 0xFFFF))
+ goto wwn_prefix_out;
+
+ /* check capability in alternative san mac address block */
+ offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
+ hw->eeprom.ops.read(hw, offset, &caps);
+ if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
+ goto wwn_prefix_out;
+
+ /* get the corresponding prefix for WWNN/WWPN */
+ offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
+ hw->eeprom.ops.read(hw, offset, wwnn_prefix);
+
+ offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
+ hw->eeprom.ops.read(hw, offset, wwpn_prefix);
+
+wwn_prefix_out:
+ return 0;
+}
+
static struct ixgbe_mac_operations mac_ops_82599 = {
.init_hw = &ixgbe_init_hw_generic,
.reset_hw = &ixgbe_reset_hw_82599,
@@ -2425,6 +2596,7 @@ static struct ixgbe_mac_operations mac_ops_82599 = {
.get_mac_addr = &ixgbe_get_mac_addr_generic,
.get_san_mac_addr = &ixgbe_get_san_mac_addr_82599,
.get_device_caps = &ixgbe_get_device_caps_82599,
+ .get_wwn_prefix = &ixgbe_get_wwn_prefix_82599,
.stop_adapter = &ixgbe_stop_adapter_generic,
.get_bus_info = &ixgbe_get_bus_info_generic,
.set_lan_id = &ixgbe_set_lan_id_multi_port_pcie,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.