devices/e1000e/nvm-3.16-ethercat.c
author Florian Pose <fp@gh.de>
Fri, 13 Jan 2017 16:47:27 +0100
branchstable-1.5
changeset 2665 2de506e60b21
parent 2588 792892ab4806
permissions -rw-r--r--
merge
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/* Intel PRO/1000 Linux driver
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 * Copyright(c) 1999 - 2014 Intel Corporation.
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 *
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 * This program is free software; you can redistribute it and/or modify it
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 * under the terms and conditions of the GNU General Public License,
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 * version 2, as published by the Free Software Foundation.
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 *
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 * This program is distributed in the hope it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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 * more details.
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 *
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 * The full GNU General Public License is included in this distribution in
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 * the file called "COPYING".
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 *
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 * Contact Information:
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 * Linux NICS <linux.nics@intel.com>
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 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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 */
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#include "e1000-3.16-ethercat.h"
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/**
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 *  e1000_raise_eec_clk - Raise EEPROM clock
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 *  @hw: pointer to the HW structure
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 *  @eecd: pointer to the EEPROM
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 *
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 *  Enable/Raise the EEPROM clock bit.
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 **/
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static void e1000_raise_eec_clk(struct e1000_hw *hw, u32 *eecd)
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{
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	*eecd = *eecd | E1000_EECD_SK;
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	ew32(EECD, *eecd);
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	e1e_flush();
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	udelay(hw->nvm.delay_usec);
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}
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/**
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 *  e1000_lower_eec_clk - Lower EEPROM clock
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 *  @hw: pointer to the HW structure
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 *  @eecd: pointer to the EEPROM
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 *
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 *  Clear/Lower the EEPROM clock bit.
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 **/
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static void e1000_lower_eec_clk(struct e1000_hw *hw, u32 *eecd)
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{
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	*eecd = *eecd & ~E1000_EECD_SK;
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	ew32(EECD, *eecd);
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	e1e_flush();
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	udelay(hw->nvm.delay_usec);
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}
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/**
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 *  e1000_shift_out_eec_bits - Shift data bits our to the EEPROM
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 *  @hw: pointer to the HW structure
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 *  @data: data to send to the EEPROM
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 *  @count: number of bits to shift out
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 *
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 *  We need to shift 'count' bits out to the EEPROM.  So, the value in the
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 *  "data" parameter will be shifted out to the EEPROM one bit at a time.
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 *  In order to do this, "data" must be broken down into bits.
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 **/
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static void e1000_shift_out_eec_bits(struct e1000_hw *hw, u16 data, u16 count)
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{
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	struct e1000_nvm_info *nvm = &hw->nvm;
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	u32 eecd = er32(EECD);
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	u32 mask;
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	mask = 0x01 << (count - 1);
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	if (nvm->type == e1000_nvm_eeprom_spi)
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		eecd |= E1000_EECD_DO;
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	do {
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		eecd &= ~E1000_EECD_DI;
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		if (data & mask)
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			eecd |= E1000_EECD_DI;
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		ew32(EECD, eecd);
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		e1e_flush();
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		udelay(nvm->delay_usec);
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		e1000_raise_eec_clk(hw, &eecd);
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		e1000_lower_eec_clk(hw, &eecd);
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		mask >>= 1;
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	} while (mask);
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	eecd &= ~E1000_EECD_DI;
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	ew32(EECD, eecd);
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}
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/**
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 *  e1000_shift_in_eec_bits - Shift data bits in from the EEPROM
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 *  @hw: pointer to the HW structure
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 *  @count: number of bits to shift in
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 *
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 *  In order to read a register from the EEPROM, we need to shift 'count' bits
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 *  in from the EEPROM.  Bits are "shifted in" by raising the clock input to
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 *  the EEPROM (setting the SK bit), and then reading the value of the data out
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 *  "DO" bit.  During this "shifting in" process the data in "DI" bit should
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 *  always be clear.
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 **/
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static u16 e1000_shift_in_eec_bits(struct e1000_hw *hw, u16 count)
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{
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	u32 eecd;
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	u32 i;
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	u16 data;
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	eecd = er32(EECD);
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	eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
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	data = 0;
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	for (i = 0; i < count; i++) {
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		data <<= 1;
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		e1000_raise_eec_clk(hw, &eecd);
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		eecd = er32(EECD);
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		eecd &= ~E1000_EECD_DI;
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		if (eecd & E1000_EECD_DO)
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			data |= 1;
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		e1000_lower_eec_clk(hw, &eecd);
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	}
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	return data;
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}
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/**
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 *  e1000e_poll_eerd_eewr_done - Poll for EEPROM read/write completion
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 *  @hw: pointer to the HW structure
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 *  @ee_reg: EEPROM flag for polling
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 *
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 *  Polls the EEPROM status bit for either read or write completion based
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 *  upon the value of 'ee_reg'.
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 **/
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s32 e1000e_poll_eerd_eewr_done(struct e1000_hw *hw, int ee_reg)
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{
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	u32 attempts = 100000;
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	u32 i, reg = 0;
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	for (i = 0; i < attempts; i++) {
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		if (ee_reg == E1000_NVM_POLL_READ)
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			reg = er32(EERD);
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		else
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			reg = er32(EEWR);
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		if (reg & E1000_NVM_RW_REG_DONE)
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			return 0;
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		udelay(5);
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	}
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	return -E1000_ERR_NVM;
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}
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/**
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 *  e1000e_acquire_nvm - Generic request for access to EEPROM
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 *  @hw: pointer to the HW structure
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 *
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 *  Set the EEPROM access request bit and wait for EEPROM access grant bit.
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 *  Return successful if access grant bit set, else clear the request for
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 *  EEPROM access and return -E1000_ERR_NVM (-1).
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 **/
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s32 e1000e_acquire_nvm(struct e1000_hw *hw)
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{
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	u32 eecd = er32(EECD);
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	s32 timeout = E1000_NVM_GRANT_ATTEMPTS;
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	ew32(EECD, eecd | E1000_EECD_REQ);
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	eecd = er32(EECD);
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	while (timeout) {
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		if (eecd & E1000_EECD_GNT)
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			break;
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		udelay(5);
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		eecd = er32(EECD);
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		timeout--;
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	}
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	if (!timeout) {
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		eecd &= ~E1000_EECD_REQ;
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		ew32(EECD, eecd);
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		e_dbg("Could not acquire NVM grant\n");
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		return -E1000_ERR_NVM;
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	}
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   191
	return 0;
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   192
}
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   194
/**
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 *  e1000_standby_nvm - Return EEPROM to standby state
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 *  @hw: pointer to the HW structure
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 *
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 *  Return the EEPROM to a standby state.
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 **/
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static void e1000_standby_nvm(struct e1000_hw *hw)
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{
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	struct e1000_nvm_info *nvm = &hw->nvm;
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	u32 eecd = er32(EECD);
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   204
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	if (nvm->type == e1000_nvm_eeprom_spi) {
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		/* Toggle CS to flush commands */
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		eecd |= E1000_EECD_CS;
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		ew32(EECD, eecd);
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		e1e_flush();
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		udelay(nvm->delay_usec);
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		eecd &= ~E1000_EECD_CS;
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		ew32(EECD, eecd);
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   213
		e1e_flush();
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   214
		udelay(nvm->delay_usec);
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   215
	}
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   216
}
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   217
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   218
/**
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   219
 *  e1000_stop_nvm - Terminate EEPROM command
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 *  @hw: pointer to the HW structure
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   221
 *
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 *  Terminates the current command by inverting the EEPROM's chip select pin.
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   223
 **/
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   224
static void e1000_stop_nvm(struct e1000_hw *hw)
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{
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   226
	u32 eecd;
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   227
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   228
	eecd = er32(EECD);
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   229
	if (hw->nvm.type == e1000_nvm_eeprom_spi) {
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   230
		/* Pull CS high */
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   231
		eecd |= E1000_EECD_CS;
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   232
		e1000_lower_eec_clk(hw, &eecd);
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   233
	}
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   234
}
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   235
792892ab4806 Added all drivers for kernel 3.16.
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   236
/**
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   237
 *  e1000e_release_nvm - Release exclusive access to EEPROM
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   238
 *  @hw: pointer to the HW structure
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   239
 *
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   240
 *  Stop any current commands to the EEPROM and clear the EEPROM request bit.
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   241
 **/
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   242
void e1000e_release_nvm(struct e1000_hw *hw)
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   243
{
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   244
	u32 eecd;
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   245
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   246
	e1000_stop_nvm(hw);
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   247
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   248
	eecd = er32(EECD);
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   249
	eecd &= ~E1000_EECD_REQ;
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   250
	ew32(EECD, eecd);
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   251
}
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   252
792892ab4806 Added all drivers for kernel 3.16.
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   253
/**
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   254
 *  e1000_ready_nvm_eeprom - Prepares EEPROM for read/write
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   255
 *  @hw: pointer to the HW structure
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   256
 *
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   257
 *  Setups the EEPROM for reading and writing.
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   258
 **/
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   259
static s32 e1000_ready_nvm_eeprom(struct e1000_hw *hw)
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   260
{
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   261
	struct e1000_nvm_info *nvm = &hw->nvm;
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   262
	u32 eecd = er32(EECD);
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   263
	u8 spi_stat_reg;
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   264
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   265
	if (nvm->type == e1000_nvm_eeprom_spi) {
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   266
		u16 timeout = NVM_MAX_RETRY_SPI;
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   267
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   268
		/* Clear SK and CS */
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   269
		eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
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   270
		ew32(EECD, eecd);
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   271
		e1e_flush();
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   272
		udelay(1);
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   273
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   274
		/* Read "Status Register" repeatedly until the LSB is cleared.
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   275
		 * The EEPROM will signal that the command has been completed
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   276
		 * by clearing bit 0 of the internal status register.  If it's
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   277
		 * not cleared within 'timeout', then error out.
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   278
		 */
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   279
		while (timeout) {
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   280
			e1000_shift_out_eec_bits(hw, NVM_RDSR_OPCODE_SPI,
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   281
						 hw->nvm.opcode_bits);
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   282
			spi_stat_reg = (u8)e1000_shift_in_eec_bits(hw, 8);
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   283
			if (!(spi_stat_reg & NVM_STATUS_RDY_SPI))
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   284
				break;
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parents:
diff changeset
   285
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   286
			udelay(5);
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   287
			e1000_standby_nvm(hw);
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   288
			timeout--;
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   289
		}
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   290
792892ab4806 Added all drivers for kernel 3.16.
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   291
		if (!timeout) {
792892ab4806 Added all drivers for kernel 3.16.
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parents:
diff changeset
   292
			e_dbg("SPI NVM Status error\n");
792892ab4806 Added all drivers for kernel 3.16.
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parents:
diff changeset
   293
			return -E1000_ERR_NVM;
792892ab4806 Added all drivers for kernel 3.16.
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parents:
diff changeset
   294
		}
792892ab4806 Added all drivers for kernel 3.16.
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parents:
diff changeset
   295
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   296
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   297
	return 0;
792892ab4806 Added all drivers for kernel 3.16.
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parents:
diff changeset
   298
}
792892ab4806 Added all drivers for kernel 3.16.
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parents:
diff changeset
   299
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   300
/**
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   301
 *  e1000e_read_nvm_eerd - Reads EEPROM using EERD register
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   302
 *  @hw: pointer to the HW structure
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   303
 *  @offset: offset of word in the EEPROM to read
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   304
 *  @words: number of words to read
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   305
 *  @data: word read from the EEPROM
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   306
 *
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   307
 *  Reads a 16 bit word from the EEPROM using the EERD register.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   308
 **/
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   309
s32 e1000e_read_nvm_eerd(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
792892ab4806 Added all drivers for kernel 3.16.
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parents:
diff changeset
   310
{
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   311
	struct e1000_nvm_info *nvm = &hw->nvm;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   312
	u32 i, eerd = 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   313
	s32 ret_val = 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   314
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   315
	/* A check for invalid values:  offset too large, too many words,
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   316
	 * too many words for the offset, and not enough words.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   317
	 */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   318
	if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   319
	    (words == 0)) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   320
		e_dbg("nvm parameter(s) out of bounds\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   321
		return -E1000_ERR_NVM;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   322
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   323
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   324
	for (i = 0; i < words; i++) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   325
		eerd = ((offset + i) << E1000_NVM_RW_ADDR_SHIFT) +
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   326
		    E1000_NVM_RW_REG_START;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   327
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   328
		ew32(EERD, eerd);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   329
		ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_READ);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   330
		if (ret_val)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   331
			break;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   332
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   333
		data[i] = (er32(EERD) >> E1000_NVM_RW_REG_DATA);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   334
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   335
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   336
	return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   337
}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   338
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   339
/**
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   340
 *  e1000e_write_nvm_spi - Write to EEPROM using SPI
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   341
 *  @hw: pointer to the HW structure
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   342
 *  @offset: offset within the EEPROM to be written to
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   343
 *  @words: number of words to write
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   344
 *  @data: 16 bit word(s) to be written to the EEPROM
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   345
 *
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   346
 *  Writes data to EEPROM at offset using SPI interface.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   347
 *
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   348
 *  If e1000e_update_nvm_checksum is not called after this function , the
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   349
 *  EEPROM will most likely contain an invalid checksum.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   350
 **/
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   351
s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   352
{
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   353
	struct e1000_nvm_info *nvm = &hw->nvm;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   354
	s32 ret_val = -E1000_ERR_NVM;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   355
	u16 widx = 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   356
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   357
	/* A check for invalid values:  offset too large, too many words,
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   358
	 * and not enough words.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   359
	 */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   360
	if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   361
	    (words == 0)) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   362
		e_dbg("nvm parameter(s) out of bounds\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   363
		return -E1000_ERR_NVM;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   364
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   365
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   366
	while (widx < words) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   367
		u8 write_opcode = NVM_WRITE_OPCODE_SPI;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   368
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   369
		ret_val = nvm->ops.acquire(hw);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   370
		if (ret_val)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   371
			return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   372
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   373
		ret_val = e1000_ready_nvm_eeprom(hw);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   374
		if (ret_val) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   375
			nvm->ops.release(hw);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   376
			return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   377
		}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   378
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   379
		e1000_standby_nvm(hw);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   380
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   381
		/* Send the WRITE ENABLE command (8 bit opcode) */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   382
		e1000_shift_out_eec_bits(hw, NVM_WREN_OPCODE_SPI,
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   383
					 nvm->opcode_bits);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   384
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   385
		e1000_standby_nvm(hw);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   386
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   387
		/* Some SPI eeproms use the 8th address bit embedded in the
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   388
		 * opcode
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   389
		 */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   390
		if ((nvm->address_bits == 8) && (offset >= 128))
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   391
			write_opcode |= NVM_A8_OPCODE_SPI;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   392
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   393
		/* Send the Write command (8-bit opcode + addr) */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   394
		e1000_shift_out_eec_bits(hw, write_opcode, nvm->opcode_bits);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   395
		e1000_shift_out_eec_bits(hw, (u16)((offset + widx) * 2),
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   396
					 nvm->address_bits);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   397
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   398
		/* Loop to allow for up to whole page write of eeprom */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   399
		while (widx < words) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   400
			u16 word_out = data[widx];
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   401
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   402
			word_out = (word_out >> 8) | (word_out << 8);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   403
			e1000_shift_out_eec_bits(hw, word_out, 16);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   404
			widx++;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   405
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   406
			if ((((offset + widx) * 2) % nvm->page_size) == 0) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   407
				e1000_standby_nvm(hw);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   408
				break;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   409
			}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   410
		}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   411
		usleep_range(10000, 20000);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   412
		nvm->ops.release(hw);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   413
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   414
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   415
	return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   416
}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   417
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   418
/**
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   419
 *  e1000_read_pba_string_generic - Read device part number
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   420
 *  @hw: pointer to the HW structure
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   421
 *  @pba_num: pointer to device part number
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   422
 *  @pba_num_size: size of part number buffer
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   423
 *
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   424
 *  Reads the product board assembly (PBA) number from the EEPROM and stores
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   425
 *  the value in pba_num.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   426
 **/
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   427
s32 e1000_read_pba_string_generic(struct e1000_hw *hw, u8 *pba_num,
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   428
				  u32 pba_num_size)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   429
{
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   430
	s32 ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   431
	u16 nvm_data;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   432
	u16 pba_ptr;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   433
	u16 offset;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   434
	u16 length;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   435
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   436
	if (pba_num == NULL) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   437
		e_dbg("PBA string buffer was null\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   438
		return -E1000_ERR_INVALID_ARGUMENT;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   439
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   440
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   441
	ret_val = e1000_read_nvm(hw, NVM_PBA_OFFSET_0, 1, &nvm_data);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   442
	if (ret_val) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   443
		e_dbg("NVM Read Error\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   444
		return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   445
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   446
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   447
	ret_val = e1000_read_nvm(hw, NVM_PBA_OFFSET_1, 1, &pba_ptr);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   448
	if (ret_val) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   449
		e_dbg("NVM Read Error\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   450
		return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   451
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   452
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   453
	/* if nvm_data is not ptr guard the PBA must be in legacy format which
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   454
	 * means pba_ptr is actually our second data word for the PBA number
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   455
	 * and we can decode it into an ascii string
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   456
	 */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   457
	if (nvm_data != NVM_PBA_PTR_GUARD) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   458
		e_dbg("NVM PBA number is not stored as string\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   459
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   460
		/* make sure callers buffer is big enough to store the PBA */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   461
		if (pba_num_size < E1000_PBANUM_LENGTH) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   462
			e_dbg("PBA string buffer too small\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   463
			return E1000_ERR_NO_SPACE;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   464
		}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   465
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   466
		/* extract hex string from data and pba_ptr */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   467
		pba_num[0] = (nvm_data >> 12) & 0xF;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   468
		pba_num[1] = (nvm_data >> 8) & 0xF;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   469
		pba_num[2] = (nvm_data >> 4) & 0xF;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   470
		pba_num[3] = nvm_data & 0xF;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   471
		pba_num[4] = (pba_ptr >> 12) & 0xF;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   472
		pba_num[5] = (pba_ptr >> 8) & 0xF;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   473
		pba_num[6] = '-';
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   474
		pba_num[7] = 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   475
		pba_num[8] = (pba_ptr >> 4) & 0xF;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   476
		pba_num[9] = pba_ptr & 0xF;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   477
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   478
		/* put a null character on the end of our string */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   479
		pba_num[10] = '\0';
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   480
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   481
		/* switch all the data but the '-' to hex char */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   482
		for (offset = 0; offset < 10; offset++) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   483
			if (pba_num[offset] < 0xA)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   484
				pba_num[offset] += '0';
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   485
			else if (pba_num[offset] < 0x10)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   486
				pba_num[offset] += 'A' - 0xA;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   487
		}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   488
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   489
		return 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   490
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   491
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   492
	ret_val = e1000_read_nvm(hw, pba_ptr, 1, &length);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   493
	if (ret_val) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   494
		e_dbg("NVM Read Error\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   495
		return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   496
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   497
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   498
	if (length == 0xFFFF || length == 0) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   499
		e_dbg("NVM PBA number section invalid length\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   500
		return -E1000_ERR_NVM_PBA_SECTION;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   501
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   502
	/* check if pba_num buffer is big enough */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   503
	if (pba_num_size < (((u32)length * 2) - 1)) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   504
		e_dbg("PBA string buffer too small\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   505
		return -E1000_ERR_NO_SPACE;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   506
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   507
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   508
	/* trim pba length from start of string */
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   509
	pba_ptr++;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   510
	length--;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   511
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   512
	for (offset = 0; offset < length; offset++) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   513
		ret_val = e1000_read_nvm(hw, pba_ptr + offset, 1, &nvm_data);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   514
		if (ret_val) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   515
			e_dbg("NVM Read Error\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   516
			return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   517
		}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   518
		pba_num[offset * 2] = (u8)(nvm_data >> 8);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   519
		pba_num[(offset * 2) + 1] = (u8)(nvm_data & 0xFF);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   520
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   521
	pba_num[offset * 2] = '\0';
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   522
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   523
	return 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   524
}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   525
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   526
/**
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   527
 *  e1000_read_mac_addr_generic - Read device MAC address
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   528
 *  @hw: pointer to the HW structure
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   529
 *
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   530
 *  Reads the device MAC address from the EEPROM and stores the value.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   531
 *  Since devices with two ports use the same EEPROM, we increment the
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   532
 *  last bit in the MAC address for the second port.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   533
 **/
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   534
s32 e1000_read_mac_addr_generic(struct e1000_hw *hw)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   535
{
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   536
	u32 rar_high;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   537
	u32 rar_low;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   538
	u16 i;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   539
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   540
	rar_high = er32(RAH(0));
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   541
	rar_low = er32(RAL(0));
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   542
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   543
	for (i = 0; i < E1000_RAL_MAC_ADDR_LEN; i++)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   544
		hw->mac.perm_addr[i] = (u8)(rar_low >> (i * 8));
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   545
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   546
	for (i = 0; i < E1000_RAH_MAC_ADDR_LEN; i++)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   547
		hw->mac.perm_addr[i + 4] = (u8)(rar_high >> (i * 8));
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   548
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   549
	for (i = 0; i < ETH_ALEN; i++)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   550
		hw->mac.addr[i] = hw->mac.perm_addr[i];
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   551
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   552
	return 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   553
}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   554
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   555
/**
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   556
 *  e1000e_validate_nvm_checksum_generic - Validate EEPROM checksum
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   557
 *  @hw: pointer to the HW structure
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   558
 *
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   559
 *  Calculates the EEPROM checksum by reading/adding each word of the EEPROM
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   560
 *  and then verifies that the sum of the EEPROM is equal to 0xBABA.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   561
 **/
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   562
s32 e1000e_validate_nvm_checksum_generic(struct e1000_hw *hw)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   563
{
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   564
	s32 ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   565
	u16 checksum = 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   566
	u16 i, nvm_data;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   567
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   568
	for (i = 0; i < (NVM_CHECKSUM_REG + 1); i++) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   569
		ret_val = e1000_read_nvm(hw, i, 1, &nvm_data);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   570
		if (ret_val) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   571
			e_dbg("NVM Read Error\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   572
			return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   573
		}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   574
		checksum += nvm_data;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   575
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   576
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   577
	if (checksum != (u16)NVM_SUM) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   578
		e_dbg("NVM Checksum Invalid\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   579
		return -E1000_ERR_NVM;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   580
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   581
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   582
	return 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   583
}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   584
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   585
/**
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   586
 *  e1000e_update_nvm_checksum_generic - Update EEPROM checksum
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   587
 *  @hw: pointer to the HW structure
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   588
 *
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   589
 *  Updates the EEPROM checksum by reading/adding each word of the EEPROM
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   590
 *  up to the checksum.  Then calculates the EEPROM checksum and writes the
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   591
 *  value to the EEPROM.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   592
 **/
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   593
s32 e1000e_update_nvm_checksum_generic(struct e1000_hw *hw)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   594
{
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   595
	s32 ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   596
	u16 checksum = 0;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   597
	u16 i, nvm_data;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   598
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   599
	for (i = 0; i < NVM_CHECKSUM_REG; i++) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   600
		ret_val = e1000_read_nvm(hw, i, 1, &nvm_data);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   601
		if (ret_val) {
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   602
			e_dbg("NVM Read Error while updating checksum.\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   603
			return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   604
		}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   605
		checksum += nvm_data;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   606
	}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   607
	checksum = (u16)NVM_SUM - checksum;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   608
	ret_val = e1000_write_nvm(hw, NVM_CHECKSUM_REG, 1, &checksum);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   609
	if (ret_val)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   610
		e_dbg("NVM Write Error while updating checksum.\n");
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   611
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   612
	return ret_val;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   613
}
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   614
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   615
/**
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   616
 *  e1000e_reload_nvm_generic - Reloads EEPROM
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   617
 *  @hw: pointer to the HW structure
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   618
 *
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   619
 *  Reloads the EEPROM by setting the "Reinitialize from EEPROM" bit in the
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   620
 *  extended control register.
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   621
 **/
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   622
void e1000e_reload_nvm_generic(struct e1000_hw *hw)
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   623
{
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   624
	u32 ctrl_ext;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   625
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   626
	usleep_range(10, 20);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   627
	ctrl_ext = er32(CTRL_EXT);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   628
	ctrl_ext |= E1000_CTRL_EXT_EE_RST;
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   629
	ew32(CTRL_EXT, ctrl_ext);
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   630
	e1e_flush();
792892ab4806 Added all drivers for kernel 3.16.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   631
}