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path: root/drivers/net/e1000e/ich8lan.c
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Diffstat (limited to 'drivers/net/e1000e/ich8lan.c')
-rw-r--r--drivers/net/e1000e/ich8lan.c151
1 files changed, 101 insertions, 50 deletions
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index d115a6d30f29..f2a5963b5a95 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -27,6 +27,7 @@
*******************************************************************************/
/*
+ * 82562G 10/100 Network Connection
* 82562G-2 10/100 Network Connection
* 82562GT 10/100 Network Connection
* 82562GT-2 10/100 Network Connection
@@ -40,6 +41,7 @@
* 82566MM Gigabit Network Connection
* 82567LM Gigabit Network Connection
* 82567LF Gigabit Network Connection
+ * 82567V Gigabit Network Connection
* 82567LM-2 Gigabit Network Connection
* 82567LF-2 Gigabit Network Connection
* 82567V-2 Gigabit Network Connection
@@ -92,6 +94,8 @@
#define E1000_ICH_NVM_SIG_WORD 0x13
#define E1000_ICH_NVM_SIG_MASK 0xC000
+#define E1000_ICH_NVM_VALID_SIG_MASK 0xC0
+#define E1000_ICH_NVM_SIG_VALUE 0x80
#define E1000_ICH8_LAN_INIT_TIMEOUT 1500
@@ -956,45 +960,62 @@ static s32 e1000_set_d3_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
* @bank: pointer to the variable that returns the active bank
*
* Reads signature byte from the NVM using the flash access registers.
+ * Word 0x13 bits 15:14 = 10b indicate a valid signature for that bank.
**/
static s32 e1000_valid_nvm_bank_detect_ich8lan(struct e1000_hw *hw, u32 *bank)
{
+ u32 eecd;
struct e1000_nvm_info *nvm = &hw->nvm;
- /* flash bank size is in words */
u32 bank1_offset = nvm->flash_bank_size * sizeof(u16);
u32 act_offset = E1000_ICH_NVM_SIG_WORD * 2 + 1;
- u8 bank_high_byte = 0;
+ u8 sig_byte = 0;
+ s32 ret_val = 0;
- if (hw->mac.type != e1000_ich10lan) {
- if (er32(EECD) & E1000_EECD_SEC1VAL)
- *bank = 1;
- else
- *bank = 0;
- } else {
- /*
- * Make sure the signature for bank 0 is valid,
- * if not check for bank1
- */
- e1000_read_flash_byte_ich8lan(hw, act_offset, &bank_high_byte);
- if ((bank_high_byte & 0xC0) == 0x80) {
+ switch (hw->mac.type) {
+ case e1000_ich8lan:
+ case e1000_ich9lan:
+ eecd = er32(EECD);
+ if ((eecd & E1000_EECD_SEC1VAL_VALID_MASK) ==
+ E1000_EECD_SEC1VAL_VALID_MASK) {
+ if (eecd & E1000_EECD_SEC1VAL)
+ *bank = 1;
+ else
+ *bank = 0;
+
+ return 0;
+ }
+ hw_dbg(hw, "Unable to determine valid NVM bank via EEC - "
+ "reading flash signature\n");
+ /* fall-thru */
+ default:
+ /* set bank to 0 in case flash read fails */
+ *bank = 0;
+
+ /* Check bank 0 */
+ ret_val = e1000_read_flash_byte_ich8lan(hw, act_offset,
+ &sig_byte);
+ if (ret_val)
+ return ret_val;
+ if ((sig_byte & E1000_ICH_NVM_VALID_SIG_MASK) ==
+ E1000_ICH_NVM_SIG_VALUE) {
*bank = 0;
- } else {
- /*
- * find if segment 1 is valid by verifying
- * bit 15:14 = 10b in word 0x13
- */
- e1000_read_flash_byte_ich8lan(hw,
- act_offset + bank1_offset,
- &bank_high_byte);
+ return 0;
+ }
- /* bank1 has a valid signature equivalent to SEC1V */
- if ((bank_high_byte & 0xC0) == 0x80) {
- *bank = 1;
- } else {
- hw_dbg(hw, "ERROR: EEPROM not present\n");
- return -E1000_ERR_NVM;
- }
+ /* Check bank 1 */
+ ret_val = e1000_read_flash_byte_ich8lan(hw, act_offset +
+ bank1_offset,
+ &sig_byte);
+ if (ret_val)
+ return ret_val;
+ if ((sig_byte & E1000_ICH_NVM_VALID_SIG_MASK) ==
+ E1000_ICH_NVM_SIG_VALUE) {
+ *bank = 1;
+ return 0;
}
+
+ hw_dbg(hw, "ERROR: No valid NVM bank present\n");
+ return -E1000_ERR_NVM;
}
return 0;
@@ -1027,11 +1048,11 @@ static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
ret_val = e1000_acquire_swflag_ich8lan(hw);
if (ret_val)
- return ret_val;
+ goto out;
ret_val = e1000_valid_nvm_bank_detect_ich8lan(hw, &bank);
if (ret_val)
- return ret_val;
+ goto release;
act_offset = (bank) ? nvm->flash_bank_size : 0;
act_offset += offset;
@@ -1050,8 +1071,13 @@ static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
}
}
+release:
e1000_release_swflag_ich8lan(hw);
+out:
+ if (ret_val)
+ hw_dbg(hw, "NVM read error: %d\n", ret_val);
+
return ret_val;
}
@@ -1340,14 +1366,14 @@ static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
ret_val = e1000e_update_nvm_checksum_generic(hw);
if (ret_val)
- return ret_val;
+ goto out;
if (nvm->type != e1000_nvm_flash_sw)
- return ret_val;
+ goto out;
ret_val = e1000_acquire_swflag_ich8lan(hw);
if (ret_val)
- return ret_val;
+ goto out;
/*
* We're writing to the opposite bank so if we're on bank 1,
@@ -1355,17 +1381,27 @@ static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
* is going to be written
*/
ret_val = e1000_valid_nvm_bank_detect_ich8lan(hw, &bank);
- if (ret_val)
- return ret_val;
+ if (ret_val) {
+ e1000_release_swflag_ich8lan(hw);
+ goto out;
+ }
if (bank == 0) {
new_bank_offset = nvm->flash_bank_size;
old_bank_offset = 0;
- e1000_erase_flash_bank_ich8lan(hw, 1);
+ ret_val = e1000_erase_flash_bank_ich8lan(hw, 1);
+ if (ret_val) {
+ e1000_release_swflag_ich8lan(hw);
+ goto out;
+ }
} else {
old_bank_offset = nvm->flash_bank_size;
new_bank_offset = 0;
- e1000_erase_flash_bank_ich8lan(hw, 0);
+ ret_val = e1000_erase_flash_bank_ich8lan(hw, 0);
+ if (ret_val) {
+ e1000_release_swflag_ich8lan(hw);
+ goto out;
+ }
}
for (i = 0; i < E1000_ICH8_SHADOW_RAM_WORDS; i++) {
@@ -1377,9 +1413,11 @@ static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
if (dev_spec->shadow_ram[i].modified) {
data = dev_spec->shadow_ram[i].value;
} else {
- e1000_read_flash_word_ich8lan(hw,
- i + old_bank_offset,
- &data);
+ ret_val = e1000_read_flash_word_ich8lan(hw, i +
+ old_bank_offset,
+ &data);
+ if (ret_val)
+ break;
}
/*
@@ -1420,7 +1458,7 @@ static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
/* Possibly read-only, see e1000e_write_protect_nvm_ich8lan() */
hw_dbg(hw, "Flash commit failed.\n");
e1000_release_swflag_ich8lan(hw);
- return ret_val;
+ goto out;
}
/*
@@ -1430,14 +1468,18 @@ static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
* and we need to change bit 14 to 0b
*/
act_offset = new_bank_offset + E1000_ICH_NVM_SIG_WORD;
- e1000_read_flash_word_ich8lan(hw, act_offset, &data);
+ ret_val = e1000_read_flash_word_ich8lan(hw, act_offset, &data);
+ if (ret_val) {
+ e1000_release_swflag_ich8lan(hw);
+ goto out;
+ }
data &= 0xBFFF;
ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
act_offset * 2 + 1,
(u8)(data >> 8));
if (ret_val) {
e1000_release_swflag_ich8lan(hw);
- return ret_val;
+ goto out;
}
/*
@@ -1450,7 +1492,7 @@ static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
ret_val = e1000_retry_write_flash_byte_ich8lan(hw, act_offset, 0);
if (ret_val) {
e1000_release_swflag_ich8lan(hw);
- return ret_val;
+ goto out;
}
/* Great! Everything worked, we can now clear the cached entries. */
@@ -1468,6 +1510,10 @@ static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
e1000e_reload_nvm(hw);
msleep(10);
+out:
+ if (ret_val)
+ hw_dbg(hw, "NVM update error: %d\n", ret_val);
+
return ret_val;
}
@@ -1894,7 +1940,7 @@ static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
}
ret_val = e1000_acquire_swflag_ich8lan(hw);
/* Whether or not the swflag was acquired, we need to reset the part */
- hw_dbg(hw, "Issuing a global reset to ich8lan");
+ hw_dbg(hw, "Issuing a global reset to ich8lan\n");
ew32(CTRL, (ctrl | E1000_CTRL_RST));
msleep(20);
@@ -2074,12 +2120,17 @@ static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw)
* the default flow control setting, so we explicitly
* set it to full.
*/
- if (hw->fc.type == e1000_fc_default)
- hw->fc.type = e1000_fc_full;
+ if (hw->fc.requested_mode == e1000_fc_default)
+ hw->fc.requested_mode = e1000_fc_full;
- hw->fc.original_type = hw->fc.type;
+ /*
+ * Save off the requested flow control mode for use later. Depending
+ * on the link partner's capabilities, we may or may not use this mode.
+ */
+ hw->fc.current_mode = hw->fc.requested_mode;
- hw_dbg(hw, "After fix-ups FlowControl is now = %x\n", hw->fc.type);
+ hw_dbg(hw, "After fix-ups FlowControl is now = %x\n",
+ hw->fc.current_mode);
/* Continue to configure the copper link. */
ret_val = e1000_setup_copper_link_ich8lan(hw);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.