2008-03-06 18:40:20 +00:00
|
|
|
/******************************************************************************
|
|
|
|
*
|
|
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
|
|
* redistributing this file, you may do so under either license.
|
|
|
|
*
|
|
|
|
* GPL LICENSE SUMMARY
|
|
|
|
*
|
|
|
|
* Copyright(c) 2008 Intel Corporation. All rights reserved.
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
|
|
* published by the Free Software Foundation.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful, but
|
|
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
* General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
|
|
|
|
* USA
|
|
|
|
*
|
|
|
|
* The full GNU General Public License is included in this distribution
|
|
|
|
* in the file called LICENSE.GPL.
|
|
|
|
*
|
|
|
|
* Contact Information:
|
|
|
|
* Tomas Winkler <tomas.winkler@intel.com>
|
|
|
|
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
|
|
|
*
|
|
|
|
* BSD LICENSE
|
|
|
|
*
|
|
|
|
* Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved.
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
*
|
|
|
|
* * Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in
|
|
|
|
* the documentation and/or other materials provided with the
|
|
|
|
* distribution.
|
|
|
|
* * Neither the name Intel Corporation nor the names of its
|
|
|
|
* contributors may be used to endorse or promote products derived
|
|
|
|
* from this software without specific prior written permission.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*****************************************************************************/
|
|
|
|
|
|
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/version.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
|
|
|
|
#include <net/mac80211.h>
|
|
|
|
|
|
|
|
#include "iwl-4965-commands.h"
|
|
|
|
#include "iwl-4965.h"
|
|
|
|
#include "iwl-core.h"
|
2008-03-12 23:58:49 +00:00
|
|
|
#include "iwl-debug.h"
|
2008-03-06 18:40:20 +00:00
|
|
|
#include "iwl-eeprom.h"
|
|
|
|
#include "iwl-4965-io.h"
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
*
|
|
|
|
* EEPROM related functions
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
int iwlcore_eeprom_verify_signature(struct iwl4965_priv *priv)
|
|
|
|
{
|
|
|
|
u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
|
|
|
|
if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
|
|
|
|
IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
|
|
|
|
return -ENOENT;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(iwlcore_eeprom_verify_signature);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The device's EEPROM semaphore prevents conflicts between driver and uCode
|
|
|
|
* when accessing the EEPROM; each access is a series of pulses to/from the
|
|
|
|
* EEPROM chip, not a single event, so even reads could conflict if they
|
|
|
|
* weren't arbitrated by the semaphore.
|
|
|
|
*/
|
|
|
|
int iwlcore_eeprom_acquire_semaphore(struct iwl4965_priv *priv)
|
|
|
|
{
|
|
|
|
u16 count;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
|
|
|
|
/* Request semaphore */
|
|
|
|
iwl4965_set_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
|
|
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
|
|
|
|
|
|
|
|
/* See if we got it */
|
|
|
|
ret = iwl4965_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
|
|
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
|
|
|
|
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
|
|
|
|
EEPROM_SEM_TIMEOUT);
|
|
|
|
if (ret >= 0) {
|
|
|
|
IWL_DEBUG_IO("Acquired semaphore after %d tries.\n",
|
|
|
|
count+1);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(iwlcore_eeprom_acquire_semaphore);
|
|
|
|
|
|
|
|
void iwlcore_eeprom_release_semaphore(struct iwl4965_priv *priv)
|
|
|
|
{
|
|
|
|
iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
|
|
|
|
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
|
|
|
|
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(iwlcore_eeprom_release_semaphore);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* iwl_eeprom_init - read EEPROM contents
|
|
|
|
*
|
|
|
|
* Load the EEPROM contents from adapter into priv->eeprom
|
|
|
|
*
|
|
|
|
* NOTE: This routine uses the non-debug IO access functions.
|
|
|
|
*/
|
|
|
|
int iwl_eeprom_init(struct iwl4965_priv *priv)
|
|
|
|
{
|
|
|
|
u16 *e = (u16 *)&priv->eeprom;
|
|
|
|
u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
|
|
|
|
u32 r;
|
|
|
|
int sz = sizeof(priv->eeprom);
|
|
|
|
int ret;
|
|
|
|
int i;
|
|
|
|
u16 addr;
|
|
|
|
|
|
|
|
/* The EEPROM structure has several padding buffers within it
|
|
|
|
* and when adding new EEPROM maps is subject to programmer errors
|
|
|
|
* which may be very difficult to identify without explicitly
|
|
|
|
* checking the resulting size of the eeprom map. */
|
|
|
|
BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
|
|
|
|
|
|
|
|
if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
|
|
|
|
IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
|
|
|
|
return -ENOENT;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Make sure driver (instead of uCode) is allowed to read EEPROM */
|
|
|
|
ret = priv->cfg->ops->lib->eeprom_ops.acquire_semaphore(priv);
|
|
|
|
if (ret < 0) {
|
|
|
|
IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
|
|
|
|
return -ENOENT;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* eeprom is an array of 16bit values */
|
|
|
|
for (addr = 0; addr < sz; addr += sizeof(u16)) {
|
|
|
|
_iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
|
|
|
|
_iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
|
|
|
|
|
|
|
|
for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
|
|
|
|
i += IWL_EEPROM_ACCESS_DELAY) {
|
|
|
|
r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
|
|
|
|
if (r & CSR_EEPROM_REG_READ_VALID_MSK)
|
|
|
|
break;
|
|
|
|
udelay(IWL_EEPROM_ACCESS_DELAY);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
|
|
|
|
IWL_ERROR("Time out reading EEPROM[%d]", addr);
|
|
|
|
ret = -ETIMEDOUT;
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
|
|
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
|
|
|
|
done:
|
|
|
|
priv->cfg->ops->lib->eeprom_ops.release_semaphore(priv);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(iwl_eeprom_init);
|
|
|
|
|
|
|
|
|
|
|
|
void iwl_eeprom_get_mac(const struct iwl4965_priv *priv, u8 *mac)
|
|
|
|
{
|
|
|
|
memcpy(mac, priv->eeprom.mac_address, 6);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(iwl_eeprom_get_mac);
|
|
|
|
|