e1000e: Add support for BM PHYs on ICH9

This patch adds support for the BM PHY, a new PHY model being used
on ICH9-based implementations.

This new PHY exposes issues in the ICH9 silicon when receiving
jumbo frames large enough to use more than a certain part of the
Rx FIFO, and this unfortunately breaks packet split jumbo receives.
For this reason we re-introduce (for affected adapters only) the
jumbo single-skb receive routine back so that people who do
wish to use jumbo frames on these ich9 platforms can do so.
Part of this problem has to do with CPU sleep states and to make
sure that all the wake up timings are correctly we force them
with the recently merged pm_qos infrastructure written by Mark
Gross. (See http://lkml.org/lkml/2007/10/4/400).

To make code read a bit easier we introduce a _IS_ICH flag so
that we don't need to do mac type checks over the code.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 82 insertions, 1 deletions

diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index 768485dbb2c6..9e38452a738c 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -38,6 +38,12 @@
  * 82566DM Gigabit Network Connection
  * 82566MC Gigabit Network Connection
  * 82566MM Gigabit Network Connection
+ * 82567LM Gigabit Network Connection
+ * 82567LF Gigabit Network Connection
+ * 82567LM-2 Gigabit Network Connection
+ * 82567LF-2 Gigabit Network Connection
+ * 82567V-2 Gigabit Network Connection
+ * 82562GT-3 10/100 Network Connection
  */
 
 #include <linux/netdevice.h>
@@ -198,6 +204,19 @@ static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
         phy->addr                       = 1;
         phy->reset_delay_us             = 100;
 
+        /*
+         * We may need to do this twice - once for IGP and if that fails,
+         * we'll set BM func pointers and try again
+         */
+        ret_val = e1000e_determine_phy_address(hw);
+        if (ret_val) {
+                hw->phy.ops.write_phy_reg = e1000e_write_phy_reg_bm;
+                hw->phy.ops.read_phy_reg  = e1000e_read_phy_reg_bm;
+                ret_val = e1000e_determine_phy_address(hw);
+                if (ret_val)
+                        return ret_val;
+        }
+
         phy->id = 0;
         while ((e1000_phy_unknown == e1000e_get_phy_type_from_id(phy->id)) &&
                (i++ < 100)) {
@@ -219,6 +238,13 @@ static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
                 phy->type = e1000_phy_ife;
                 phy->autoneg_mask = E1000_ALL_NOT_GIG;
                 break;
+        case BME1000_E_PHY_ID:
+                phy->type = e1000_phy_bm;
+                phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
+                hw->phy.ops.read_phy_reg = e1000e_read_phy_reg_bm;
+                hw->phy.ops.write_phy_reg = e1000e_write_phy_reg_bm;
+                hw->phy.ops.commit_phy = e1000e_phy_sw_reset;
+                break;
         default:
                 return -E1000_ERR_PHY;
                 break;
@@ -664,6 +690,7 @@ static s32 e1000_get_phy_info_ich8lan(struct e1000_hw *hw)
                 return e1000_get_phy_info_ife_ich8lan(hw);
                 break;
         case e1000_phy_igp_3:
+        case e1000_phy_bm:
                 return e1000e_get_phy_info_igp(hw);
                 break;
         default:
@@ -728,7 +755,7 @@ static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
         s32 ret_val = 0;
         u16 data;
 
-        if (phy->type != e1000_phy_igp_3)
+        if (phy->type == e1000_phy_ife)
                 return ret_val;
 
         phy_ctrl = er32(PHY_CTRL);
@@ -1918,8 +1945,35 @@ static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw)
                 ret_val = e1000e_copper_link_setup_igp(hw);
                 if (ret_val)
                         return ret_val;
+        } else if (hw->phy.type == e1000_phy_bm) {
+                ret_val = e1000e_copper_link_setup_m88(hw);
+                if (ret_val)
+                        return ret_val;
         }
 
+        if (hw->phy.type == e1000_phy_ife) {
+                ret_val = e1e_rphy(hw, IFE_PHY_MDIX_CONTROL, &reg_data);
+                if (ret_val)
+                        return ret_val;
+
+                reg_data &= ~IFE_PMC_AUTO_MDIX;
+
+                switch (hw->phy.mdix) {
+                case 1:
+                        reg_data &= ~IFE_PMC_FORCE_MDIX;
+                        break;
+                case 2:
+                        reg_data |= IFE_PMC_FORCE_MDIX;
+                        break;
+                case 0:
+                default:
+                        reg_data |= IFE_PMC_AUTO_MDIX;
+                        break;
+                }
+                ret_val = e1e_wphy(hw, IFE_PHY_MDIX_CONTROL, reg_data);
+                if (ret_val)
+                        return ret_val;
+        }
         return e1000e_setup_copper_link(hw);
 }
 
@@ -2127,6 +2181,31 @@ void e1000e_gig_downshift_workaround_ich8lan(struct e1000_hw *hw)
 }
 
 /**
+ *  e1000e_disable_gig_wol_ich8lan - disable gig during WoL
+ *  @hw: pointer to the HW structure
+ *
+ *  During S0 to Sx transition, it is possible the link remains at gig
+ *  instead of negotiating to a lower speed.  Before going to Sx, set
+ *  'LPLU Enabled' and 'Gig Disable' to force link speed negotiation
+ *  to a lower speed.
+ *
+ *  Should only be called for ICH9 devices.
+ **/
+void e1000e_disable_gig_wol_ich8lan(struct e1000_hw *hw)
+{
+        u32 phy_ctrl;
+
+        if (hw->mac.type == e1000_ich9lan) {
+                phy_ctrl = er32(PHY_CTRL);
+                phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU |
+                            E1000_PHY_CTRL_GBE_DISABLE;
+                ew32(PHY_CTRL, phy_ctrl);
+        }
+
+        return;
+}
+
+/**
  *  e1000_cleanup_led_ich8lan - Restore the default LED operation
  *  @hw: pointer to the HW structure
  *
@@ -2247,6 +2326,7 @@ static struct e1000_nvm_operations ich8_nvm_ops = {
 struct e1000_info e1000_ich8_info = {
         .mac                    = e1000_ich8lan,
         .flags                  = FLAG_HAS_WOL
+                                  | FLAG_IS_ICH
                                   | FLAG_RX_CSUM_ENABLED
                                   | FLAG_HAS_CTRLEXT_ON_LOAD
                                   | FLAG_HAS_AMT
@@ -2262,6 +2342,7 @@ struct e1000_info e1000_ich8_info = {
 struct e1000_info e1000_ich9_info = {
         .mac                    = e1000_ich9lan,
         .flags                  = FLAG_HAS_JUMBO_FRAMES
+                                  | FLAG_IS_ICH
                                   | FLAG_HAS_WOL
                                   | FLAG_RX_CSUM_ENABLED
                                   | FLAG_HAS_CTRLEXT_ON_LOAD