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-rw-r--r--drivers/net/e1000e/e1000.h1
-rw-r--r--drivers/net/e1000e/ich8lan.c57
-rw-r--r--drivers/net/e1000e/phy.c85
3 files changed, 53 insertions, 90 deletions
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
index cebbd9079d53..d6ee28f6ea08 100644
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h
@@ -582,7 +582,6 @@ extern s32 e1000_read_phy_reg_hv_locked(struct e1000_hw *hw, u32 offset,
extern s32 e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data);
extern s32 e1000_write_phy_reg_hv_locked(struct e1000_hw *hw, u32 offset,
u16 data);
-extern s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw, bool slow);
extern s32 e1000_link_stall_workaround_hv(struct e1000_hw *hw);
extern s32 e1000_copper_link_setup_82577(struct e1000_hw *hw);
extern s32 e1000_check_polarity_82577(struct e1000_hw *hw);
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index ad08cf3f40c0..c2ea86197503 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -138,6 +138,10 @@
#define E1000_NVM_K1_CONFIG 0x1B /* NVM K1 Config Word */
#define E1000_NVM_K1_ENABLE 0x1 /* NVM Enable K1 bit */
+/* KMRN Mode Control */
+#define HV_KMRN_MODE_CTRL PHY_REG(769, 16)
+#define HV_KMRN_MDIO_SLOW 0x0400
+
/* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
/* Offset 04h HSFSTS */
union ich8_hws_flash_status {
@@ -219,6 +223,7 @@ static s32 e1000_set_lplu_state_pchlan(struct e1000_hw *hw, bool active);
static void e1000_power_down_phy_copper_ich8lan(struct e1000_hw *hw);
static void e1000_lan_init_done_ich8lan(struct e1000_hw *hw);
static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link);
+static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw);
static inline u16 __er16flash(struct e1000_hw *hw, unsigned long reg)
{
@@ -270,7 +275,21 @@ static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
phy->id = e1000_phy_unknown;
- e1000e_get_phy_id(hw);
+ ret_val = e1000e_get_phy_id(hw);
+ if (ret_val)
+ goto out;
+ if ((phy->id == 0) || (phy->id == PHY_REVISION_MASK)) {
+ /*
+ * In case the PHY needs to be in mdio slow mode (eg. 82577),
+ * set slow mode and try to get the PHY id again.
+ */
+ ret_val = e1000_set_mdio_slow_mode_hv(hw);
+ if (ret_val)
+ goto out;
+ ret_val = e1000e_get_phy_id(hw);
+ if (ret_val)
+ goto out;
+ }
phy->type = e1000e_get_phy_type_from_id(phy->id);
switch (phy->type) {
@@ -292,6 +311,7 @@ static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
break;
}
+out:
return ret_val;
}
@@ -1076,6 +1096,26 @@ out:
/**
+ * e1000_set_mdio_slow_mode_hv - Set slow MDIO access mode
+ * @hw: pointer to the HW structure
+ **/
+static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw)
+{
+ s32 ret_val;
+ u16 data;
+
+ ret_val = e1e_rphy(hw, HV_KMRN_MODE_CTRL, &data);
+ if (ret_val)
+ return ret_val;
+
+ data |= HV_KMRN_MDIO_SLOW;
+
+ ret_val = e1e_wphy(hw, HV_KMRN_MODE_CTRL, data);
+
+ return ret_val;
+}
+
+/**
* e1000_hv_phy_workarounds_ich8lan - A series of Phy workarounds to be
* done after every PHY reset.
**/
@@ -1086,6 +1126,13 @@ static s32 e1000_hv_phy_workarounds_ich8lan(struct e1000_hw *hw)
if (hw->mac.type != e1000_pchlan)
return ret_val;
+ /* Set MDIO slow mode before any other MDIO access */
+ if (hw->phy.type == e1000_phy_82577) {
+ ret_val = e1000_set_mdio_slow_mode_hv(hw);
+ if (ret_val)
+ goto out;
+ }
+
if (((hw->phy.type == e1000_phy_82577) &&
((hw->phy.revision == 1) || (hw->phy.revision == 2))) ||
((hw->phy.type == e1000_phy_82578) && (hw->phy.revision == 1))) {
@@ -1184,6 +1231,7 @@ static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw)
/* Allow time for h/w to get to a quiescent state after reset */
mdelay(10);
+ /* Perform any necessary post-reset workarounds */
if (hw->mac.type == e1000_pchlan) {
ret_val = e1000_hv_phy_workarounds_ich8lan(hw);
if (ret_val)
@@ -2484,6 +2532,10 @@ static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
if (!ret_val)
e1000_release_swflag_ich8lan(hw);
+ /* Perform any necessary post-reset workarounds */
+ if (hw->mac.type == e1000_pchlan)
+ ret_val = e1000_hv_phy_workarounds_ich8lan(hw);
+
if (ctrl & E1000_CTRL_PHY_RST)
ret_val = hw->phy.ops.get_cfg_done(hw);
@@ -2528,9 +2580,6 @@ static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
kab |= E1000_KABGTXD_BGSQLBIAS;
ew32(KABGTXD, kab);
- if (hw->mac.type == e1000_pchlan)
- ret_val = e1000_hv_phy_workarounds_ich8lan(hw);
-
out:
return ret_val;
}
diff --git a/drivers/net/e1000e/phy.c b/drivers/net/e1000e/phy.c
index 55a2c0acfee7..7f3ceb9dad6a 100644
--- a/drivers/net/e1000e/phy.c
+++ b/drivers/net/e1000e/phy.c
@@ -152,32 +152,9 @@ s32 e1000e_get_phy_id(struct e1000_hw *hw)
if (phy->id != 0 && phy->id != PHY_REVISION_MASK)
goto out;
- /*
- * If the PHY ID is still unknown, we may have an 82577
- * without link. We will try again after setting Slow MDIC
- * mode. No harm in trying again in this case since the PHY
- * ID is unknown at this point anyway.
- */
- ret_val = phy->ops.acquire(hw);
- if (ret_val)
- goto out;
- ret_val = e1000_set_mdio_slow_mode_hv(hw, true);
- if (ret_val)
- goto out;
- phy->ops.release(hw);
-
retry_count++;
}
out:
- /* Revert to MDIO fast mode, if applicable */
- if (retry_count) {
- ret_val = phy->ops.acquire(hw);
- if (ret_val)
- return ret_val;
- ret_val = e1000_set_mdio_slow_mode_hv(hw, false);
- phy->ops.release(hw);
- }
-
return ret_val;
}
@@ -2791,38 +2768,6 @@ static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active)
}
/**
- * e1000_set_mdio_slow_mode_hv - Set slow MDIO access mode
- * @hw: pointer to the HW structure
- * @slow: true for slow mode, false for normal mode
- *
- * Assumes semaphore already acquired.
- **/
-s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw, bool slow)
-{
- s32 ret_val = 0;
- u16 data = 0;
-
- /* Set MDIO mode - page 769, register 16: 0x2580==slow, 0x2180==fast */
- hw->phy.addr = 1;
- ret_val = e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
- (BM_PORT_CTRL_PAGE << IGP_PAGE_SHIFT));
- if (ret_val)
- goto out;
-
- ret_val = e1000e_write_phy_reg_mdic(hw, BM_CS_CTRL1,
- (0x2180 | (slow << 10)));
- if (ret_val)
- goto out;
-
- /* dummy read when reverting to fast mode - throw away result */
- if (!slow)
- ret_val = e1000e_read_phy_reg_mdic(hw, BM_CS_CTRL1, &data);
-
-out:
- return ret_val;
-}
-
-/**
* __e1000_read_phy_reg_hv - Read HV PHY register
* @hw: pointer to the HW structure
* @offset: register offset to be read
@@ -2839,7 +2784,6 @@ static s32 __e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data,
s32 ret_val;
u16 page = BM_PHY_REG_PAGE(offset);
u16 reg = BM_PHY_REG_NUM(offset);
- bool in_slow_mode = false;
if (!locked) {
ret_val = hw->phy.ops.acquire(hw);
@@ -2847,16 +2791,6 @@ static s32 __e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data,
return ret_val;
}
- /* Workaround failure in MDIO access while cable is disconnected */
- if ((hw->phy.type == e1000_phy_82577) &&
- !(er32(STATUS) & E1000_STATUS_LU)) {
- ret_val = e1000_set_mdio_slow_mode_hv(hw, true);
- if (ret_val)
- goto out;
-
- in_slow_mode = true;
- }
-
/* Page 800 works differently than the rest so it has its own func */
if (page == BM_WUC_PAGE) {
ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset,
@@ -2893,10 +2827,6 @@ static s32 __e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data,
ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & reg,
data);
out:
- /* Revert to MDIO fast mode, if applicable */
- if ((hw->phy.type == e1000_phy_82577) && in_slow_mode)
- ret_val |= e1000_set_mdio_slow_mode_hv(hw, false);
-
if (!locked)
hw->phy.ops.release(hw);
@@ -2948,7 +2878,6 @@ static s32 __e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data,
s32 ret_val;
u16 page = BM_PHY_REG_PAGE(offset);
u16 reg = BM_PHY_REG_NUM(offset);
- bool in_slow_mode = false;
if (!locked) {
ret_val = hw->phy.ops.acquire(hw);
@@ -2956,16 +2885,6 @@ static s32 __e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data,
return ret_val;
}
- /* Workaround failure in MDIO access while cable is disconnected */
- if ((hw->phy.type == e1000_phy_82577) &&
- !(er32(STATUS) & E1000_STATUS_LU)) {
- ret_val = e1000_set_mdio_slow_mode_hv(hw, true);
- if (ret_val)
- goto out;
-
- in_slow_mode = true;
- }
-
/* Page 800 works differently than the rest so it has its own func */
if (page == BM_WUC_PAGE) {
ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset,
@@ -3019,10 +2938,6 @@ static s32 __e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data,
data);
out:
- /* Revert to MDIO fast mode, if applicable */
- if ((hw->phy.type == e1000_phy_82577) && in_slow_mode)
- ret_val |= e1000_set_mdio_slow_mode_hv(hw, false);
-
if (!locked)
hw->phy.ops.release(hw);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.