0a6857e70d
This patch removes iwl-4965-debug.h to iwl-debug.h It will be used by more NICs Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
206 lines
6.7 KiB
C
206 lines
6.7 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* Contact Information:
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* Tomas Winkler <tomas.winkler@intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/init.h>
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#include <net/mac80211.h>
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#include "iwl-4965-commands.h"
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#include "iwl-4965.h"
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#include "iwl-core.h"
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#include "iwl-debug.h"
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#include "iwl-eeprom.h"
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#include "iwl-4965-io.h"
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/******************************************************************************
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*
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* EEPROM related functions
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*
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******************************************************************************/
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int iwlcore_eeprom_verify_signature(struct iwl4965_priv *priv)
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{
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u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
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if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
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IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
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return -ENOENT;
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}
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return 0;
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}
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EXPORT_SYMBOL(iwlcore_eeprom_verify_signature);
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/*
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* The device's EEPROM semaphore prevents conflicts between driver and uCode
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* when accessing the EEPROM; each access is a series of pulses to/from the
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* EEPROM chip, not a single event, so even reads could conflict if they
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* weren't arbitrated by the semaphore.
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*/
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int iwlcore_eeprom_acquire_semaphore(struct iwl4965_priv *priv)
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{
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u16 count;
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int ret;
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for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
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/* Request semaphore */
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iwl4965_set_bit(priv, CSR_HW_IF_CONFIG_REG,
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CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
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/* See if we got it */
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ret = iwl4965_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
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CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
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CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
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EEPROM_SEM_TIMEOUT);
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if (ret >= 0) {
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IWL_DEBUG_IO("Acquired semaphore after %d tries.\n",
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count+1);
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return ret;
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}
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}
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return ret;
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}
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EXPORT_SYMBOL(iwlcore_eeprom_acquire_semaphore);
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void iwlcore_eeprom_release_semaphore(struct iwl4965_priv *priv)
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{
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iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
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CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
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}
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EXPORT_SYMBOL(iwlcore_eeprom_release_semaphore);
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/**
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* iwl_eeprom_init - read EEPROM contents
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*
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* Load the EEPROM contents from adapter into priv->eeprom
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*
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* NOTE: This routine uses the non-debug IO access functions.
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*/
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int iwl_eeprom_init(struct iwl4965_priv *priv)
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{
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u16 *e = (u16 *)&priv->eeprom;
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u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
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u32 r;
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int sz = sizeof(priv->eeprom);
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int ret;
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int i;
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u16 addr;
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/* The EEPROM structure has several padding buffers within it
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* and when adding new EEPROM maps is subject to programmer errors
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* which may be very difficult to identify without explicitly
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* checking the resulting size of the eeprom map. */
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BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
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if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
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IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
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return -ENOENT;
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}
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/* Make sure driver (instead of uCode) is allowed to read EEPROM */
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ret = priv->cfg->ops->lib->eeprom_ops.acquire_semaphore(priv);
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if (ret < 0) {
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IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
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return -ENOENT;
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}
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/* eeprom is an array of 16bit values */
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for (addr = 0; addr < sz; addr += sizeof(u16)) {
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_iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
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_iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
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for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
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i += IWL_EEPROM_ACCESS_DELAY) {
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r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
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if (r & CSR_EEPROM_REG_READ_VALID_MSK)
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break;
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udelay(IWL_EEPROM_ACCESS_DELAY);
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}
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if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
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IWL_ERROR("Time out reading EEPROM[%d]", addr);
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ret = -ETIMEDOUT;
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goto done;
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}
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e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
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}
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ret = 0;
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done:
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priv->cfg->ops->lib->eeprom_ops.release_semaphore(priv);
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return ret;
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}
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EXPORT_SYMBOL(iwl_eeprom_init);
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void iwl_eeprom_get_mac(const struct iwl4965_priv *priv, u8 *mac)
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{
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memcpy(mac, priv->eeprom.mac_address, 6);
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}
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EXPORT_SYMBOL(iwl_eeprom_get_mac);
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