devices/e1000e/nvm-3.12-ethercat.c
author Edouard Tisserant <edouard.tisserant@gmail.com>
Mon, 08 Oct 2018 23:16:34 +0200
branchstable-1.5
changeset 2726 ca80d6dac4c8
parent 2586 5b89b4e38cdc
permissions -rw-r--r--
devices/rtdmnet.c : abuse RTDM api to allow sendmsg and recvmsg to be called indirectly from userland cobalt process ioctl, while rtdm_socket is created from a kernel thread.
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/*******************************************************************************
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  Intel PRO/1000 Linux driver
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  Copyright(c) 1999 - 2013 Intel Corporation.
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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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  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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  You should have received a copy of the GNU General Public License along with
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  this program; if not, write to the Free Software Foundation, Inc.,
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  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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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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  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 "e1000-3.12-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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   196
	}
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	return 0;
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}
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/**
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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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	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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		e1e_flush();
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   221
		udelay(nvm->delay_usec);
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   222
	}
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   223
}
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   224
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/**
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   226
 *  e1000_stop_nvm - Terminate EEPROM command
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 *  @hw: pointer to the HW structure
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 *
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 *  Terminates the current command by inverting the EEPROM's chip select pin.
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 **/
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static void e1000_stop_nvm(struct e1000_hw *hw)
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{
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	u32 eecd;
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	eecd = er32(EECD);
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   236
	if (hw->nvm.type == e1000_nvm_eeprom_spi) {
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		/* Pull CS high */
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   238
		eecd |= E1000_EECD_CS;
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   239
		e1000_lower_eec_clk(hw, &eecd);
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   240
	}
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   241
}
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   242
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   243
/**
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   244
 *  e1000e_release_nvm - Release exclusive access to EEPROM
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   245
 *  @hw: pointer to the HW structure
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   246
 *
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   247
 *  Stop any current commands to the EEPROM and clear the EEPROM request bit.
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   248
 **/
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   249
void e1000e_release_nvm(struct e1000_hw *hw)
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{
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   251
	u32 eecd;
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   252
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   253
	e1000_stop_nvm(hw);
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   254
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	eecd = er32(EECD);
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   256
	eecd &= ~E1000_EECD_REQ;
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   257
	ew32(EECD, eecd);
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   258
}
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   259
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/**
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   261
 *  e1000_ready_nvm_eeprom - Prepares EEPROM for read/write
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   262
 *  @hw: pointer to the HW structure
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   263
 *
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   264
 *  Setups the EEPROM for reading and writing.
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   265
 **/
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   266
static s32 e1000_ready_nvm_eeprom(struct e1000_hw *hw)
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   267
{
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   268
	struct e1000_nvm_info *nvm = &hw->nvm;
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   269
	u32 eecd = er32(EECD);
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   270
	u8 spi_stat_reg;
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   271
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   272
	if (nvm->type == e1000_nvm_eeprom_spi) {
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   273
		u16 timeout = NVM_MAX_RETRY_SPI;
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   274
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   275
		/* Clear SK and CS */
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   276
		eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
5b89b4e38cdc Added all drivers for kernel 3.12.
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diff changeset
   277
		ew32(EECD, eecd);
5b89b4e38cdc Added all drivers for kernel 3.12.
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parents:
diff changeset
   278
		e1e_flush();
5b89b4e38cdc Added all drivers for kernel 3.12.
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diff changeset
   279
		udelay(1);
5b89b4e38cdc Added all drivers for kernel 3.12.
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parents:
diff changeset
   280
5b89b4e38cdc Added all drivers for kernel 3.12.
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parents:
diff changeset
   281
		/* Read "Status Register" repeatedly until the LSB is cleared.
5b89b4e38cdc Added all drivers for kernel 3.12.
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parents:
diff changeset
   282
		 * The EEPROM will signal that the command has been completed
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   283
		 * by clearing bit 0 of the internal status register.  If it's
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   284
		 * not cleared within 'timeout', then error out.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   285
		 */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   286
		while (timeout) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   287
			e1000_shift_out_eec_bits(hw, NVM_RDSR_OPCODE_SPI,
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   288
						 hw->nvm.opcode_bits);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   289
			spi_stat_reg = (u8)e1000_shift_in_eec_bits(hw, 8);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   290
			if (!(spi_stat_reg & NVM_STATUS_RDY_SPI))
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   291
				break;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   292
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   293
			udelay(5);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   294
			e1000_standby_nvm(hw);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   295
			timeout--;
5b89b4e38cdc Added all drivers for kernel 3.12.
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parents:
diff changeset
   296
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   297
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   298
		if (!timeout) {
5b89b4e38cdc Added all drivers for kernel 3.12.
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parents:
diff changeset
   299
			e_dbg("SPI NVM Status error\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
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parents:
diff changeset
   300
			return -E1000_ERR_NVM;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   301
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   302
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   303
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   304
	return 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   305
}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   306
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   307
/**
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   308
 *  e1000e_read_nvm_eerd - Reads EEPROM using EERD register
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   309
 *  @hw: pointer to the HW structure
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   310
 *  @offset: offset of word in the EEPROM to read
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   311
 *  @words: number of words to read
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   312
 *  @data: word read from the EEPROM
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   313
 *
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   314
 *  Reads a 16 bit word from the EEPROM using the EERD register.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   315
 **/
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   316
s32 e1000e_read_nvm_eerd(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   317
{
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   318
	struct e1000_nvm_info *nvm = &hw->nvm;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   319
	u32 i, eerd = 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   320
	s32 ret_val = 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   321
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   322
	/* A check for invalid values:  offset too large, too many words,
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   323
	 * too many words for the offset, and not enough words.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   324
	 */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   325
	if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   326
	    (words == 0)) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   327
		e_dbg("nvm parameter(s) out of bounds\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   328
		return -E1000_ERR_NVM;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   329
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   330
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   331
	for (i = 0; i < words; i++) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   332
		eerd = ((offset + i) << E1000_NVM_RW_ADDR_SHIFT) +
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   333
		    E1000_NVM_RW_REG_START;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   334
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   335
		ew32(EERD, eerd);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   336
		ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_READ);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   337
		if (ret_val)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   338
			break;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   339
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   340
		data[i] = (er32(EERD) >> E1000_NVM_RW_REG_DATA);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   341
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   342
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   343
	return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   344
}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   345
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   346
/**
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   347
 *  e1000e_write_nvm_spi - Write to EEPROM using SPI
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   348
 *  @hw: pointer to the HW structure
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   349
 *  @offset: offset within the EEPROM to be written to
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   350
 *  @words: number of words to write
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   351
 *  @data: 16 bit word(s) to be written to the EEPROM
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   352
 *
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   353
 *  Writes data to EEPROM at offset using SPI interface.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   354
 *
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   355
 *  If e1000e_update_nvm_checksum is not called after this function , the
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   356
 *  EEPROM will most likely contain an invalid checksum.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   357
 **/
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   358
s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   359
{
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   360
	struct e1000_nvm_info *nvm = &hw->nvm;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   361
	s32 ret_val = -E1000_ERR_NVM;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   362
	u16 widx = 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   363
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   364
	/* A check for invalid values:  offset too large, too many words,
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   365
	 * and not enough words.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   366
	 */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   367
	if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   368
	    (words == 0)) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   369
		e_dbg("nvm parameter(s) out of bounds\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   370
		return -E1000_ERR_NVM;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   371
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   372
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   373
	while (widx < words) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   374
		u8 write_opcode = NVM_WRITE_OPCODE_SPI;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   375
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   376
		ret_val = nvm->ops.acquire(hw);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   377
		if (ret_val)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   378
			return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   379
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   380
		ret_val = e1000_ready_nvm_eeprom(hw);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   381
		if (ret_val) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   382
			nvm->ops.release(hw);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   383
			return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   384
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   385
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   386
		e1000_standby_nvm(hw);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   387
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   388
		/* Send the WRITE ENABLE command (8 bit opcode) */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   389
		e1000_shift_out_eec_bits(hw, NVM_WREN_OPCODE_SPI,
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   390
					 nvm->opcode_bits);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   391
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   392
		e1000_standby_nvm(hw);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   393
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   394
		/* Some SPI eeproms use the 8th address bit embedded in the
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   395
		 * opcode
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   396
		 */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   397
		if ((nvm->address_bits == 8) && (offset >= 128))
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   398
			write_opcode |= NVM_A8_OPCODE_SPI;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   399
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   400
		/* Send the Write command (8-bit opcode + addr) */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   401
		e1000_shift_out_eec_bits(hw, write_opcode, nvm->opcode_bits);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   402
		e1000_shift_out_eec_bits(hw, (u16)((offset + widx) * 2),
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   403
					 nvm->address_bits);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   404
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   405
		/* Loop to allow for up to whole page write of eeprom */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   406
		while (widx < words) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   407
			u16 word_out = data[widx];
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   408
			word_out = (word_out >> 8) | (word_out << 8);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   409
			e1000_shift_out_eec_bits(hw, word_out, 16);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   410
			widx++;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   411
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   412
			if ((((offset + widx) * 2) % nvm->page_size) == 0) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   413
				e1000_standby_nvm(hw);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   414
				break;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   415
			}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   416
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   417
		usleep_range(10000, 20000);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   418
		nvm->ops.release(hw);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   419
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   420
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   421
	return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   422
}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   423
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   424
/**
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   425
 *  e1000_read_pba_string_generic - Read device part number
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   426
 *  @hw: pointer to the HW structure
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   427
 *  @pba_num: pointer to device part number
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   428
 *  @pba_num_size: size of part number buffer
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   429
 *
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   430
 *  Reads the product board assembly (PBA) number from the EEPROM and stores
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   431
 *  the value in pba_num.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   432
 **/
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   433
s32 e1000_read_pba_string_generic(struct e1000_hw *hw, u8 *pba_num,
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   434
				  u32 pba_num_size)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   435
{
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   436
	s32 ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   437
	u16 nvm_data;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   438
	u16 pba_ptr;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   439
	u16 offset;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   440
	u16 length;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   441
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   442
	if (pba_num == NULL) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   443
		e_dbg("PBA string buffer was null\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   444
		return -E1000_ERR_INVALID_ARGUMENT;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   445
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   446
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   447
	ret_val = e1000_read_nvm(hw, NVM_PBA_OFFSET_0, 1, &nvm_data);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   448
	if (ret_val) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   449
		e_dbg("NVM Read Error\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   450
		return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   451
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   452
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   453
	ret_val = e1000_read_nvm(hw, NVM_PBA_OFFSET_1, 1, &pba_ptr);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   454
	if (ret_val) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   455
		e_dbg("NVM Read Error\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   456
		return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   457
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   458
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   459
	/* if nvm_data is not ptr guard the PBA must be in legacy format which
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   460
	 * means pba_ptr is actually our second data word for the PBA number
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   461
	 * and we can decode it into an ascii string
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   462
	 */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   463
	if (nvm_data != NVM_PBA_PTR_GUARD) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   464
		e_dbg("NVM PBA number is not stored as string\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   465
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   466
		/* make sure callers buffer is big enough to store the PBA */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   467
		if (pba_num_size < E1000_PBANUM_LENGTH) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   468
			e_dbg("PBA string buffer too small\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   469
			return E1000_ERR_NO_SPACE;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   470
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   471
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   472
		/* extract hex string from data and pba_ptr */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   473
		pba_num[0] = (nvm_data >> 12) & 0xF;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   474
		pba_num[1] = (nvm_data >> 8) & 0xF;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   475
		pba_num[2] = (nvm_data >> 4) & 0xF;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   476
		pba_num[3] = nvm_data & 0xF;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   477
		pba_num[4] = (pba_ptr >> 12) & 0xF;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   478
		pba_num[5] = (pba_ptr >> 8) & 0xF;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   479
		pba_num[6] = '-';
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   480
		pba_num[7] = 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   481
		pba_num[8] = (pba_ptr >> 4) & 0xF;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   482
		pba_num[9] = pba_ptr & 0xF;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   483
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   484
		/* put a null character on the end of our string */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   485
		pba_num[10] = '\0';
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   486
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   487
		/* switch all the data but the '-' to hex char */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   488
		for (offset = 0; offset < 10; offset++) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   489
			if (pba_num[offset] < 0xA)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   490
				pba_num[offset] += '0';
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   491
			else if (pba_num[offset] < 0x10)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   492
				pba_num[offset] += 'A' - 0xA;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   493
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   494
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   495
		return 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   496
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   497
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   498
	ret_val = e1000_read_nvm(hw, pba_ptr, 1, &length);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   499
	if (ret_val) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   500
		e_dbg("NVM Read Error\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   501
		return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   502
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   503
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   504
	if (length == 0xFFFF || length == 0) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   505
		e_dbg("NVM PBA number section invalid length\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   506
		return -E1000_ERR_NVM_PBA_SECTION;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   507
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   508
	/* check if pba_num buffer is big enough */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   509
	if (pba_num_size < (((u32)length * 2) - 1)) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   510
		e_dbg("PBA string buffer too small\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   511
		return -E1000_ERR_NO_SPACE;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   512
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   513
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   514
	/* trim pba length from start of string */
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   515
	pba_ptr++;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   516
	length--;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   517
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   518
	for (offset = 0; offset < length; offset++) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   519
		ret_val = e1000_read_nvm(hw, pba_ptr + offset, 1, &nvm_data);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   520
		if (ret_val) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   521
			e_dbg("NVM Read Error\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   522
			return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   523
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   524
		pba_num[offset * 2] = (u8)(nvm_data >> 8);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   525
		pba_num[(offset * 2) + 1] = (u8)(nvm_data & 0xFF);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   526
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   527
	pba_num[offset * 2] = '\0';
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   528
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   529
	return 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   530
}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   531
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   532
/**
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   533
 *  e1000_read_mac_addr_generic - Read device MAC address
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   534
 *  @hw: pointer to the HW structure
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   535
 *
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   536
 *  Reads the device MAC address from the EEPROM and stores the value.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   537
 *  Since devices with two ports use the same EEPROM, we increment the
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   538
 *  last bit in the MAC address for the second port.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   539
 **/
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   540
s32 e1000_read_mac_addr_generic(struct e1000_hw *hw)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   541
{
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   542
	u32 rar_high;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   543
	u32 rar_low;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   544
	u16 i;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   545
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   546
	rar_high = er32(RAH(0));
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   547
	rar_low = er32(RAL(0));
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   548
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   549
	for (i = 0; i < E1000_RAL_MAC_ADDR_LEN; i++)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   550
		hw->mac.perm_addr[i] = (u8)(rar_low >> (i * 8));
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   551
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   552
	for (i = 0; i < E1000_RAH_MAC_ADDR_LEN; i++)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   553
		hw->mac.perm_addr[i + 4] = (u8)(rar_high >> (i * 8));
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   554
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   555
	for (i = 0; i < ETH_ALEN; i++)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   556
		hw->mac.addr[i] = hw->mac.perm_addr[i];
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   557
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   558
	return 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   559
}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   560
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   561
/**
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   562
 *  e1000e_validate_nvm_checksum_generic - Validate EEPROM checksum
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   563
 *  @hw: pointer to the HW structure
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   564
 *
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   565
 *  Calculates the EEPROM checksum by reading/adding each word of the EEPROM
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   566
 *  and then verifies that the sum of the EEPROM is equal to 0xBABA.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   567
 **/
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   568
s32 e1000e_validate_nvm_checksum_generic(struct e1000_hw *hw)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   569
{
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   570
	s32 ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   571
	u16 checksum = 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   572
	u16 i, nvm_data;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   573
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   574
	for (i = 0; i < (NVM_CHECKSUM_REG + 1); i++) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   575
		ret_val = e1000_read_nvm(hw, i, 1, &nvm_data);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   576
		if (ret_val) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   577
			e_dbg("NVM Read Error\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   578
			return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   579
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   580
		checksum += nvm_data;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   581
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   582
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   583
	if (checksum != (u16)NVM_SUM) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   584
		e_dbg("NVM Checksum Invalid\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   585
		return -E1000_ERR_NVM;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   586
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   587
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   588
	return 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   589
}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   590
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   591
/**
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   592
 *  e1000e_update_nvm_checksum_generic - Update EEPROM checksum
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   593
 *  @hw: pointer to the HW structure
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   594
 *
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   595
 *  Updates the EEPROM checksum by reading/adding each word of the EEPROM
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   596
 *  up to the checksum.  Then calculates the EEPROM checksum and writes the
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   597
 *  value to the EEPROM.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   598
 **/
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   599
s32 e1000e_update_nvm_checksum_generic(struct e1000_hw *hw)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   600
{
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   601
	s32 ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   602
	u16 checksum = 0;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   603
	u16 i, nvm_data;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   604
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   605
	for (i = 0; i < NVM_CHECKSUM_REG; i++) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   606
		ret_val = e1000_read_nvm(hw, i, 1, &nvm_data);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   607
		if (ret_val) {
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   608
			e_dbg("NVM Read Error while updating checksum.\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   609
			return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   610
		}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   611
		checksum += nvm_data;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   612
	}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   613
	checksum = (u16)NVM_SUM - checksum;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   614
	ret_val = e1000_write_nvm(hw, NVM_CHECKSUM_REG, 1, &checksum);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   615
	if (ret_val)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   616
		e_dbg("NVM Write Error while updating checksum.\n");
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   617
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   618
	return ret_val;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   619
}
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   620
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   621
/**
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   622
 *  e1000e_reload_nvm_generic - Reloads EEPROM
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   623
 *  @hw: pointer to the HW structure
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   624
 *
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   625
 *  Reloads the EEPROM by setting the "Reinitialize from EEPROM" bit in the
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   626
 *  extended control register.
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   627
 **/
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   628
void e1000e_reload_nvm_generic(struct e1000_hw *hw)
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   629
{
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   630
	u32 ctrl_ext;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   631
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   632
	usleep_range(10, 20);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   633
	ctrl_ext = er32(CTRL_EXT);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   634
	ctrl_ext |= E1000_CTRL_EXT_EE_RST;
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   635
	ew32(CTRL_EXT, ctrl_ext);
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   636
	e1e_flush();
5b89b4e38cdc Added all drivers for kernel 3.12.
Florian Pose <fp@igh-essen.com>
parents:
diff changeset
   637
}