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authorYanir Lubetkin <yanirx.lubetkin@intel.com>2015-06-02 17:05:42 +0300
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2015-06-03 04:02:39 -0700
commitec945cfbbf918dd862d7574f9b75588ba1f4a729 (patch)
treeb7536bc0eede962e6508acc78bc8a81564fc99f9 /drivers/net/ethernet/intel/e1000e
parentff9174291eddb3f42a1e9429f8b919bebc33533b (diff)
downloadlinux-linaro-stable-ec945cfbbf918dd862d7574f9b75588ba1f4a729.tar.gz
e1000e: fix legacy interrupt handling in i219
This fix handles a hardware issue that prevented i219 from working in legacy interrupts mode (IntMode=0) Signed-off-by: Yanir Lubetkin <yanirx.lubetkin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/e1000e')
-rw-r--r--drivers/net/ethernet/intel/e1000e/ich8lan.h5
-rw-r--r--drivers/net/ethernet/intel/e1000e/netdev.c14
-rw-r--r--drivers/net/ethernet/intel/e1000e/regs.h1
3 files changed, 19 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.h b/drivers/net/ethernet/intel/e1000e/ich8lan.h
index 1500536a6748..193c445773fa 100644
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.h
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.h
@@ -98,8 +98,11 @@
#define E1000_FEXTNVM6_K1_OFF_ENABLE 0x80000000
/* bit for disabling packet buffer read */
#define E1000_FEXTNVM7_DISABLE_PB_READ 0x00040000
-
+#define E1000_FEXTNVM7_SIDE_CLK_UNGATE 0x00000004
#define E1000_FEXTNVM7_DISABLE_SMB_PERST 0x00000020
+#define E1000_FEXTNVM9_IOSFSB_CLKGATE_DIS 0x00000800
+#define E1000_FEXTNVM9_IOSFSB_CLKREQ_DIS 0x00001000
+#define E1000_FEXTNVM11_DISABLE_PB_READ 0x00000200
#define E1000_FEXTNVM11_DISABLE_MULR_FIX 0x00002000
/* bit24: RXDCTL thresholds granularity: 0 - cache lines, 1 - descriptors */
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 4f029b6d0cf0..5f94fdf4af4e 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -4120,6 +4120,20 @@ void e1000e_reset(struct e1000_adapter *adapter)
phy_data &= ~IGP02E1000_PM_SPD;
e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
}
+ if (hw->mac.type == e1000_pch_spt && adapter->int_mode == 0) {
+ u32 reg;
+
+ /* Fextnvm7 @ 0xe4[2] = 1 */
+ reg = er32(FEXTNVM7);
+ reg |= E1000_FEXTNVM7_SIDE_CLK_UNGATE;
+ ew32(FEXTNVM7, reg);
+ /* Fextnvm9 @ 0x5bb4[13:12] = 11 */
+ reg = er32(FEXTNVM9);
+ reg |= E1000_FEXTNVM9_IOSFSB_CLKGATE_DIS |
+ E1000_FEXTNVM9_IOSFSB_CLKREQ_DIS;
+ ew32(FEXTNVM9, reg);
+ }
+
}
int e1000e_up(struct e1000_adapter *adapter)
diff --git a/drivers/net/ethernet/intel/e1000e/regs.h b/drivers/net/ethernet/intel/e1000e/regs.h
index 200a3126beed..110e27e35ff5 100644
--- a/drivers/net/ethernet/intel/e1000e/regs.h
+++ b/drivers/net/ethernet/intel/e1000e/regs.h
@@ -38,6 +38,7 @@
#define E1000_FEXTNVM4 0x00024 /* Future Extended NVM 4 - RW */
#define E1000_FEXTNVM6 0x00010 /* Future Extended NVM 6 - RW */
#define E1000_FEXTNVM7 0x000E4 /* Future Extended NVM 7 - RW */
+#define E1000_FEXTNVM9 0x5BB4 /* Future Extended NVM 9 - RW */
#define E1000_FEXTNVM11 0x5BBC /* Future Extended NVM 11 - RW */
#define E1000_PCIEANACFG 0x00F18 /* PCIE Analog Config */
#define E1000_FCT 0x00030 /* Flow Control Type - RW */