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![Don Fry](/assets/img/avatar_default.png)
Move the configuration pointer from the upper level iwl_priv to the lower level iwl_shared structure, with associated code fixes. Signed-off-by: Don Fry <donald.h.fry@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
1090 lines
32 KiB
C
1090 lines
32 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 - 2011 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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* Intel Linux Wireless <ilw@linux.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 - 2011 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/slab.h>
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#include <linux/init.h>
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#include <net/mac80211.h>
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#include "iwl-commands.h"
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#include "iwl-dev.h"
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#include "iwl-core.h"
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#include "iwl-debug.h"
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#include "iwl-agn.h"
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#include "iwl-eeprom.h"
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#include "iwl-io.h"
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/************************** EEPROM BANDS ****************************
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*
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* The iwl_eeprom_band definitions below provide the mapping from the
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* EEPROM contents to the specific channel number supported for each
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* band.
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*
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* For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
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* definition below maps to physical channel 42 in the 5.2GHz spectrum.
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* The specific geography and calibration information for that channel
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* is contained in the eeprom map itself.
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*
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* During init, we copy the eeprom information and channel map
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* information into priv->channel_info_24/52 and priv->channel_map_24/52
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*
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* channel_map_24/52 provides the index in the channel_info array for a
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* given channel. We have to have two separate maps as there is channel
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* overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
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* band_2
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*
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* A value of 0xff stored in the channel_map indicates that the channel
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* is not supported by the hardware at all.
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*
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* A value of 0xfe in the channel_map indicates that the channel is not
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* valid for Tx with the current hardware. This means that
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* while the system can tune and receive on a given channel, it may not
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* be able to associate or transmit any frames on that
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* channel. There is no corresponding channel information for that
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* entry.
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*
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*********************************************************************/
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/* 2.4 GHz */
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const u8 iwl_eeprom_band_1[14] = {
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
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};
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/* 5.2 GHz bands */
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static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */
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183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
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};
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static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */
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34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
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};
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static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
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100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
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};
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static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
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145, 149, 153, 157, 161, 165
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};
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static const u8 iwl_eeprom_band_6[] = { /* 2.4 ht40 channel */
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1, 2, 3, 4, 5, 6, 7
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};
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static const u8 iwl_eeprom_band_7[] = { /* 5.2 ht40 channel */
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36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
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};
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/******************************************************************************
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*
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* generic NVM functions
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*
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******************************************************************************/
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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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static int iwl_eeprom_acquire_semaphore(struct iwl_bus *bus)
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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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iwl_set_bit(bus, 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 = iwl_poll_bit(bus, 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_EEPROM(bus,
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"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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static void iwl_eeprom_release_semaphore(struct iwl_bus *bus)
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{
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iwl_clear_bit(bus, 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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static int iwl_eeprom_verify_signature(struct iwl_trans *trans)
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{
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u32 gp = iwl_read32(bus(trans), CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK;
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int ret = 0;
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IWL_DEBUG_EEPROM(trans, "EEPROM signature=0x%08x\n", gp);
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switch (gp) {
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case CSR_EEPROM_GP_BAD_SIG_EEP_GOOD_SIG_OTP:
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if (trans->nvm_device_type != NVM_DEVICE_TYPE_OTP) {
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IWL_ERR(trans, "EEPROM with bad signature: 0x%08x\n",
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gp);
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ret = -ENOENT;
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}
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break;
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case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K:
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case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K:
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if (trans->nvm_device_type != NVM_DEVICE_TYPE_EEPROM) {
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IWL_ERR(trans, "OTP with bad signature: 0x%08x\n", gp);
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ret = -ENOENT;
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}
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break;
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case CSR_EEPROM_GP_BAD_SIGNATURE_BOTH_EEP_AND_OTP:
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default:
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IWL_ERR(trans, "bad EEPROM/OTP signature, type=%s, "
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"EEPROM_GP=0x%08x\n",
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(trans->nvm_device_type == NVM_DEVICE_TYPE_OTP)
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? "OTP" : "EEPROM", gp);
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ret = -ENOENT;
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break;
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}
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return ret;
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}
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u16 iwl_eeprom_query16(const struct iwl_shared *shrd, size_t offset)
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{
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if (!shrd->eeprom)
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return 0;
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return (u16)shrd->eeprom[offset] | ((u16)shrd->eeprom[offset + 1] << 8);
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}
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int iwl_eeprom_check_version(struct iwl_priv *priv)
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{
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u16 eeprom_ver;
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u16 calib_ver;
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eeprom_ver = iwl_eeprom_query16(priv->shrd, EEPROM_VERSION);
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calib_ver = iwl_eeprom_calib_version(priv->shrd);
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if (eeprom_ver < cfg(priv)->eeprom_ver ||
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calib_ver < cfg(priv)->eeprom_calib_ver)
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goto err;
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IWL_INFO(priv, "device EEPROM VER=0x%x, CALIB=0x%x\n",
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eeprom_ver, calib_ver);
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return 0;
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err:
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IWL_ERR(priv, "Unsupported (too old) EEPROM VER=0x%x < 0x%x "
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"CALIB=0x%x < 0x%x\n",
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eeprom_ver, cfg(priv)->eeprom_ver,
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calib_ver, cfg(priv)->eeprom_calib_ver);
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return -EINVAL;
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}
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int iwl_eeprom_check_sku(struct iwl_priv *priv)
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{
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struct iwl_shared *shrd = priv->shrd;
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u16 radio_cfg;
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if (!cfg(priv)->sku) {
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/* not using sku overwrite */
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cfg(priv)->sku = iwl_eeprom_query16(shrd, EEPROM_SKU_CAP);
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if (cfg(priv)->sku & EEPROM_SKU_CAP_11N_ENABLE &&
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!cfg(priv)->ht_params) {
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IWL_ERR(priv, "Invalid 11n configuration\n");
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return -EINVAL;
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}
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}
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if (!cfg(priv)->sku) {
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IWL_ERR(priv, "Invalid device sku\n");
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return -EINVAL;
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}
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IWL_INFO(priv, "Device SKU: 0x%X\n", cfg(priv)->sku);
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if (!cfg(priv)->valid_tx_ant && !cfg(priv)->valid_rx_ant) {
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/* not using .cfg overwrite */
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radio_cfg = iwl_eeprom_query16(shrd, EEPROM_RADIO_CONFIG);
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cfg(priv)->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg);
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cfg(priv)->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg);
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if (!cfg(priv)->valid_tx_ant || !cfg(priv)->valid_rx_ant) {
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IWL_ERR(priv, "Invalid chain (0x%X, 0x%X)\n",
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cfg(priv)->valid_tx_ant,
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cfg(priv)->valid_rx_ant);
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return -EINVAL;
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}
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IWL_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
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cfg(priv)->valid_tx_ant, cfg(priv)->valid_rx_ant);
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}
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/*
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* for some special cases,
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* EEPROM did not reflect the correct antenna setting
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* so overwrite the valid tx/rx antenna from .cfg
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*/
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return 0;
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}
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void iwl_eeprom_get_mac(const struct iwl_shared *shrd, u8 *mac)
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{
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const u8 *addr = iwl_eeprom_query_addr(shrd,
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EEPROM_MAC_ADDRESS);
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memcpy(mac, addr, ETH_ALEN);
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}
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/******************************************************************************
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*
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* OTP related functions
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*
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******************************************************************************/
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static void iwl_set_otp_access(struct iwl_bus *bus, enum iwl_access_mode mode)
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{
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iwl_read32(bus, CSR_OTP_GP_REG);
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if (mode == IWL_OTP_ACCESS_ABSOLUTE)
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iwl_clear_bit(bus, CSR_OTP_GP_REG,
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CSR_OTP_GP_REG_OTP_ACCESS_MODE);
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else
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iwl_set_bit(bus, CSR_OTP_GP_REG,
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CSR_OTP_GP_REG_OTP_ACCESS_MODE);
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}
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static int iwl_get_nvm_type(struct iwl_bus *bus, u32 hw_rev)
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{
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u32 otpgp;
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int nvm_type;
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/* OTP only valid for CP/PP and after */
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switch (hw_rev & CSR_HW_REV_TYPE_MSK) {
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case CSR_HW_REV_TYPE_NONE:
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IWL_ERR(bus, "Unknown hardware type\n");
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return -ENOENT;
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case CSR_HW_REV_TYPE_5300:
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case CSR_HW_REV_TYPE_5350:
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case CSR_HW_REV_TYPE_5100:
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case CSR_HW_REV_TYPE_5150:
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nvm_type = NVM_DEVICE_TYPE_EEPROM;
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break;
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default:
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otpgp = iwl_read32(bus, CSR_OTP_GP_REG);
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if (otpgp & CSR_OTP_GP_REG_DEVICE_SELECT)
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nvm_type = NVM_DEVICE_TYPE_OTP;
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else
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nvm_type = NVM_DEVICE_TYPE_EEPROM;
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break;
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}
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return nvm_type;
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}
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static int iwl_init_otp_access(struct iwl_bus *bus)
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{
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int ret;
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/* Enable 40MHz radio clock */
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iwl_write32(bus, CSR_GP_CNTRL,
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iwl_read32(bus, CSR_GP_CNTRL) |
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CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
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/* wait for clock to be ready */
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ret = iwl_poll_bit(bus, CSR_GP_CNTRL,
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CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
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CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
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25000);
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if (ret < 0)
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IWL_ERR(bus, "Time out access OTP\n");
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else {
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iwl_set_bits_prph(bus, APMG_PS_CTRL_REG,
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APMG_PS_CTRL_VAL_RESET_REQ);
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udelay(5);
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iwl_clear_bits_prph(bus, APMG_PS_CTRL_REG,
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APMG_PS_CTRL_VAL_RESET_REQ);
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/*
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* CSR auto clock gate disable bit -
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* this is only applicable for HW with OTP shadow RAM
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*/
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if (cfg(bus)->base_params->shadow_ram_support)
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iwl_set_bit(bus, CSR_DBG_LINK_PWR_MGMT_REG,
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CSR_RESET_LINK_PWR_MGMT_DISABLED);
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}
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return ret;
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}
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static int iwl_read_otp_word(struct iwl_bus *bus, u16 addr, __le16 *eeprom_data)
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{
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int ret = 0;
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u32 r;
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u32 otpgp;
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iwl_write32(bus, CSR_EEPROM_REG,
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CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
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ret = iwl_poll_bit(bus, CSR_EEPROM_REG,
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CSR_EEPROM_REG_READ_VALID_MSK,
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CSR_EEPROM_REG_READ_VALID_MSK,
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IWL_EEPROM_ACCESS_TIMEOUT);
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if (ret < 0) {
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IWL_ERR(bus, "Time out reading OTP[%d]\n", addr);
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return ret;
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}
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r = iwl_read32(bus, CSR_EEPROM_REG);
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/* check for ECC errors: */
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otpgp = iwl_read32(bus, CSR_OTP_GP_REG);
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if (otpgp & CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK) {
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/* stop in this case */
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/* set the uncorrectable OTP ECC bit for acknowledgement */
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iwl_set_bit(bus, CSR_OTP_GP_REG,
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CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
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IWL_ERR(bus, "Uncorrectable OTP ECC error, abort OTP read\n");
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return -EINVAL;
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}
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if (otpgp & CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK) {
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/* continue in this case */
|
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/* set the correctable OTP ECC bit for acknowledgement */
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iwl_set_bit(bus, CSR_OTP_GP_REG,
|
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CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK);
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IWL_ERR(bus, "Correctable OTP ECC error, continue read\n");
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}
|
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*eeprom_data = cpu_to_le16(r >> 16);
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return 0;
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}
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|
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/*
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* iwl_is_otp_empty: check for empty OTP
|
|
*/
|
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static bool iwl_is_otp_empty(struct iwl_bus *bus)
|
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{
|
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u16 next_link_addr = 0;
|
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__le16 link_value;
|
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bool is_empty = false;
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|
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/* locate the beginning of OTP link list */
|
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if (!iwl_read_otp_word(bus, next_link_addr, &link_value)) {
|
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if (!link_value) {
|
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IWL_ERR(bus, "OTP is empty\n");
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is_empty = true;
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}
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} else {
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IWL_ERR(bus, "Unable to read first block of OTP list.\n");
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is_empty = true;
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}
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|
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return is_empty;
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}
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|
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|
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/*
|
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* iwl_find_otp_image: find EEPROM image in OTP
|
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* finding the OTP block that contains the EEPROM image.
|
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* the last valid block on the link list (the block _before_ the last block)
|
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* is the block we should read and used to configure the device.
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* If all the available OTP blocks are full, the last block will be the block
|
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* we should read and used to configure the device.
|
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* only perform this operation if shadow RAM is disabled
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*/
|
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static int iwl_find_otp_image(struct iwl_bus *bus,
|
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u16 *validblockaddr)
|
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{
|
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u16 next_link_addr = 0, valid_addr;
|
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__le16 link_value = 0;
|
|
int usedblocks = 0;
|
|
|
|
/* set addressing mode to absolute to traverse the link list */
|
|
iwl_set_otp_access(bus, IWL_OTP_ACCESS_ABSOLUTE);
|
|
|
|
/* checking for empty OTP or error */
|
|
if (iwl_is_otp_empty(bus))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* start traverse link list
|
|
* until reach the max number of OTP blocks
|
|
* different devices have different number of OTP blocks
|
|
*/
|
|
do {
|
|
/* save current valid block address
|
|
* check for more block on the link list
|
|
*/
|
|
valid_addr = next_link_addr;
|
|
next_link_addr = le16_to_cpu(link_value) * sizeof(u16);
|
|
IWL_DEBUG_EEPROM(bus, "OTP blocks %d addr 0x%x\n",
|
|
usedblocks, next_link_addr);
|
|
if (iwl_read_otp_word(bus, next_link_addr, &link_value))
|
|
return -EINVAL;
|
|
if (!link_value) {
|
|
/*
|
|
* reach the end of link list, return success and
|
|
* set address point to the starting address
|
|
* of the image
|
|
*/
|
|
*validblockaddr = valid_addr;
|
|
/* skip first 2 bytes (link list pointer) */
|
|
*validblockaddr += 2;
|
|
return 0;
|
|
}
|
|
/* more in the link list, continue */
|
|
usedblocks++;
|
|
} while (usedblocks <= cfg(bus)->base_params->max_ll_items);
|
|
|
|
/* OTP has no valid blocks */
|
|
IWL_DEBUG_EEPROM(bus, "OTP has no valid blocks\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Tx Power related functions
|
|
*
|
|
******************************************************************************/
|
|
/**
|
|
* iwl_get_max_txpower_avg - get the highest tx power from all chains.
|
|
* find the highest tx power from all chains for the channel
|
|
*/
|
|
static s8 iwl_get_max_txpower_avg(struct iwl_cfg *cfg,
|
|
struct iwl_eeprom_enhanced_txpwr *enhanced_txpower,
|
|
int element, s8 *max_txpower_in_half_dbm)
|
|
{
|
|
s8 max_txpower_avg = 0; /* (dBm) */
|
|
|
|
/* Take the highest tx power from any valid chains */
|
|
if ((cfg->valid_tx_ant & ANT_A) &&
|
|
(enhanced_txpower[element].chain_a_max > max_txpower_avg))
|
|
max_txpower_avg = enhanced_txpower[element].chain_a_max;
|
|
if ((cfg->valid_tx_ant & ANT_B) &&
|
|
(enhanced_txpower[element].chain_b_max > max_txpower_avg))
|
|
max_txpower_avg = enhanced_txpower[element].chain_b_max;
|
|
if ((cfg->valid_tx_ant & ANT_C) &&
|
|
(enhanced_txpower[element].chain_c_max > max_txpower_avg))
|
|
max_txpower_avg = enhanced_txpower[element].chain_c_max;
|
|
if (((cfg->valid_tx_ant == ANT_AB) |
|
|
(cfg->valid_tx_ant == ANT_BC) |
|
|
(cfg->valid_tx_ant == ANT_AC)) &&
|
|
(enhanced_txpower[element].mimo2_max > max_txpower_avg))
|
|
max_txpower_avg = enhanced_txpower[element].mimo2_max;
|
|
if ((cfg->valid_tx_ant == ANT_ABC) &&
|
|
(enhanced_txpower[element].mimo3_max > max_txpower_avg))
|
|
max_txpower_avg = enhanced_txpower[element].mimo3_max;
|
|
|
|
/*
|
|
* max. tx power in EEPROM is in 1/2 dBm format
|
|
* convert from 1/2 dBm to dBm (round-up convert)
|
|
* but we also do not want to loss 1/2 dBm resolution which
|
|
* will impact performance
|
|
*/
|
|
*max_txpower_in_half_dbm = max_txpower_avg;
|
|
return (max_txpower_avg & 0x01) + (max_txpower_avg >> 1);
|
|
}
|
|
|
|
static void
|
|
iwl_eeprom_enh_txp_read_element(struct iwl_priv *priv,
|
|
struct iwl_eeprom_enhanced_txpwr *txp,
|
|
s8 max_txpower_avg)
|
|
{
|
|
int ch_idx;
|
|
bool is_ht40 = txp->flags & IWL_EEPROM_ENH_TXP_FL_40MHZ;
|
|
enum ieee80211_band band;
|
|
|
|
band = txp->flags & IWL_EEPROM_ENH_TXP_FL_BAND_52G ?
|
|
IEEE80211_BAND_5GHZ : IEEE80211_BAND_2GHZ;
|
|
|
|
for (ch_idx = 0; ch_idx < priv->channel_count; ch_idx++) {
|
|
struct iwl_channel_info *ch_info = &priv->channel_info[ch_idx];
|
|
|
|
/* update matching channel or from common data only */
|
|
if (txp->channel != 0 && ch_info->channel != txp->channel)
|
|
continue;
|
|
|
|
/* update matching band only */
|
|
if (band != ch_info->band)
|
|
continue;
|
|
|
|
if (ch_info->max_power_avg < max_txpower_avg && !is_ht40) {
|
|
ch_info->max_power_avg = max_txpower_avg;
|
|
ch_info->curr_txpow = max_txpower_avg;
|
|
ch_info->scan_power = max_txpower_avg;
|
|
}
|
|
|
|
if (is_ht40 && ch_info->ht40_max_power_avg < max_txpower_avg)
|
|
ch_info->ht40_max_power_avg = max_txpower_avg;
|
|
}
|
|
}
|
|
|
|
#define EEPROM_TXP_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT)
|
|
#define EEPROM_TXP_ENTRY_LEN sizeof(struct iwl_eeprom_enhanced_txpwr)
|
|
#define EEPROM_TXP_SZ_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT_SIZE)
|
|
|
|
#define TXP_CHECK_AND_PRINT(x) ((txp->flags & IWL_EEPROM_ENH_TXP_FL_##x) \
|
|
? # x " " : "")
|
|
|
|
void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_shared *shrd = priv->shrd;
|
|
struct iwl_eeprom_enhanced_txpwr *txp_array, *txp;
|
|
int idx, entries;
|
|
__le16 *txp_len;
|
|
s8 max_txp_avg, max_txp_avg_halfdbm;
|
|
|
|
BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8);
|
|
|
|
/* the length is in 16-bit words, but we want entries */
|
|
txp_len = (__le16 *) iwl_eeprom_query_addr(shrd, EEPROM_TXP_SZ_OFFS);
|
|
entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN;
|
|
|
|
txp_array = (void *) iwl_eeprom_query_addr(shrd, EEPROM_TXP_OFFS);
|
|
|
|
for (idx = 0; idx < entries; idx++) {
|
|
txp = &txp_array[idx];
|
|
/* skip invalid entries */
|
|
if (!(txp->flags & IWL_EEPROM_ENH_TXP_FL_VALID))
|
|
continue;
|
|
|
|
IWL_DEBUG_EEPROM(priv, "%s %d:\t %s%s%s%s%s%s%s%s (0x%02x)\n",
|
|
(txp->channel && (txp->flags &
|
|
IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE)) ?
|
|
"Common " : (txp->channel) ?
|
|
"Channel" : "Common",
|
|
(txp->channel),
|
|
TXP_CHECK_AND_PRINT(VALID),
|
|
TXP_CHECK_AND_PRINT(BAND_52G),
|
|
TXP_CHECK_AND_PRINT(OFDM),
|
|
TXP_CHECK_AND_PRINT(40MHZ),
|
|
TXP_CHECK_AND_PRINT(HT_AP),
|
|
TXP_CHECK_AND_PRINT(RES1),
|
|
TXP_CHECK_AND_PRINT(RES2),
|
|
TXP_CHECK_AND_PRINT(COMMON_TYPE),
|
|
txp->flags);
|
|
IWL_DEBUG_EEPROM(priv, "\t\t chain_A: 0x%02x "
|
|
"chain_B: 0X%02x chain_C: 0X%02x\n",
|
|
txp->chain_a_max, txp->chain_b_max,
|
|
txp->chain_c_max);
|
|
IWL_DEBUG_EEPROM(priv, "\t\t MIMO2: 0x%02x "
|
|
"MIMO3: 0x%02x High 20_on_40: 0x%02x "
|
|
"Low 20_on_40: 0x%02x\n",
|
|
txp->mimo2_max, txp->mimo3_max,
|
|
((txp->delta_20_in_40 & 0xf0) >> 4),
|
|
(txp->delta_20_in_40 & 0x0f));
|
|
|
|
max_txp_avg = iwl_get_max_txpower_avg(cfg(priv), txp_array, idx,
|
|
&max_txp_avg_halfdbm);
|
|
|
|
/*
|
|
* Update the user limit values values to the highest
|
|
* power supported by any channel
|
|
*/
|
|
if (max_txp_avg > priv->tx_power_user_lmt)
|
|
priv->tx_power_user_lmt = max_txp_avg;
|
|
if (max_txp_avg_halfdbm > priv->tx_power_lmt_in_half_dbm)
|
|
priv->tx_power_lmt_in_half_dbm = max_txp_avg_halfdbm;
|
|
|
|
iwl_eeprom_enh_txp_read_element(priv, txp, max_txp_avg);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* iwl_eeprom_init - read EEPROM contents
|
|
*
|
|
* Load the EEPROM contents from adapter into shrd->eeprom
|
|
*
|
|
* NOTE: This routine uses the non-debug IO access functions.
|
|
*/
|
|
int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev)
|
|
{
|
|
struct iwl_shared *shrd = priv->shrd;
|
|
__le16 *e;
|
|
u32 gp = iwl_read32(bus(priv), CSR_EEPROM_GP);
|
|
int sz;
|
|
int ret;
|
|
u16 addr;
|
|
u16 validblockaddr = 0;
|
|
u16 cache_addr = 0;
|
|
|
|
trans(priv)->nvm_device_type = iwl_get_nvm_type(bus(priv), hw_rev);
|
|
if (trans(priv)->nvm_device_type == -ENOENT)
|
|
return -ENOENT;
|
|
/* allocate eeprom */
|
|
sz = cfg(priv)->base_params->eeprom_size;
|
|
IWL_DEBUG_EEPROM(priv, "NVM size = %d\n", sz);
|
|
shrd->eeprom = kzalloc(sz, GFP_KERNEL);
|
|
if (!shrd->eeprom) {
|
|
ret = -ENOMEM;
|
|
goto alloc_err;
|
|
}
|
|
e = (__le16 *)shrd->eeprom;
|
|
|
|
iwl_apm_init(priv);
|
|
|
|
ret = iwl_eeprom_verify_signature(trans(priv));
|
|
if (ret < 0) {
|
|
IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
|
|
ret = -ENOENT;
|
|
goto err;
|
|
}
|
|
|
|
/* Make sure driver (instead of uCode) is allowed to read EEPROM */
|
|
ret = iwl_eeprom_acquire_semaphore(bus(priv));
|
|
if (ret < 0) {
|
|
IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
|
|
ret = -ENOENT;
|
|
goto err;
|
|
}
|
|
|
|
if (trans(priv)->nvm_device_type == NVM_DEVICE_TYPE_OTP) {
|
|
|
|
ret = iwl_init_otp_access(bus(priv));
|
|
if (ret) {
|
|
IWL_ERR(priv, "Failed to initialize OTP access.\n");
|
|
ret = -ENOENT;
|
|
goto done;
|
|
}
|
|
iwl_write32(bus(priv), CSR_EEPROM_GP,
|
|
iwl_read32(bus(priv), CSR_EEPROM_GP) &
|
|
~CSR_EEPROM_GP_IF_OWNER_MSK);
|
|
|
|
iwl_set_bit(bus(priv), CSR_OTP_GP_REG,
|
|
CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK |
|
|
CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
|
|
/* traversing the linked list if no shadow ram supported */
|
|
if (!cfg(priv)->base_params->shadow_ram_support) {
|
|
if (iwl_find_otp_image(bus(priv), &validblockaddr)) {
|
|
ret = -ENOENT;
|
|
goto done;
|
|
}
|
|
}
|
|
for (addr = validblockaddr; addr < validblockaddr + sz;
|
|
addr += sizeof(u16)) {
|
|
__le16 eeprom_data;
|
|
|
|
ret = iwl_read_otp_word(bus(priv), addr, &eeprom_data);
|
|
if (ret)
|
|
goto done;
|
|
e[cache_addr / 2] = eeprom_data;
|
|
cache_addr += sizeof(u16);
|
|
}
|
|
} else {
|
|
/* eeprom is an array of 16bit values */
|
|
for (addr = 0; addr < sz; addr += sizeof(u16)) {
|
|
u32 r;
|
|
|
|
iwl_write32(bus(priv), CSR_EEPROM_REG,
|
|
CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
|
|
|
|
ret = iwl_poll_bit(bus(priv), CSR_EEPROM_REG,
|
|
CSR_EEPROM_REG_READ_VALID_MSK,
|
|
CSR_EEPROM_REG_READ_VALID_MSK,
|
|
IWL_EEPROM_ACCESS_TIMEOUT);
|
|
if (ret < 0) {
|
|
IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
|
|
goto done;
|
|
}
|
|
r = iwl_read32(bus(priv), CSR_EEPROM_REG);
|
|
e[addr / 2] = cpu_to_le16(r >> 16);
|
|
}
|
|
}
|
|
|
|
IWL_DEBUG_EEPROM(priv, "NVM Type: %s, version: 0x%x\n",
|
|
(trans(priv)->nvm_device_type == NVM_DEVICE_TYPE_OTP)
|
|
? "OTP" : "EEPROM",
|
|
iwl_eeprom_query16(shrd, EEPROM_VERSION));
|
|
|
|
ret = 0;
|
|
done:
|
|
iwl_eeprom_release_semaphore(bus(priv));
|
|
|
|
err:
|
|
if (ret)
|
|
iwl_eeprom_free(priv->shrd);
|
|
/* Reset chip to save power until we load uCode during "up". */
|
|
iwl_apm_stop(priv);
|
|
alloc_err:
|
|
return ret;
|
|
}
|
|
|
|
void iwl_eeprom_free(struct iwl_shared *shrd)
|
|
{
|
|
kfree(shrd->eeprom);
|
|
shrd->eeprom = NULL;
|
|
}
|
|
|
|
static void iwl_init_band_reference(const struct iwl_priv *priv,
|
|
int eep_band, int *eeprom_ch_count,
|
|
const struct iwl_eeprom_channel **eeprom_ch_info,
|
|
const u8 **eeprom_ch_index)
|
|
{
|
|
struct iwl_shared *shrd = priv->shrd;
|
|
u32 offset = cfg(priv)->lib->
|
|
eeprom_ops.regulatory_bands[eep_band - 1];
|
|
switch (eep_band) {
|
|
case 1: /* 2.4GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
|
|
*eeprom_ch_info = (struct iwl_eeprom_channel *)
|
|
iwl_eeprom_query_addr(shrd, offset);
|
|
*eeprom_ch_index = iwl_eeprom_band_1;
|
|
break;
|
|
case 2: /* 4.9GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
|
|
*eeprom_ch_info = (struct iwl_eeprom_channel *)
|
|
iwl_eeprom_query_addr(shrd, offset);
|
|
*eeprom_ch_index = iwl_eeprom_band_2;
|
|
break;
|
|
case 3: /* 5.2GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
|
|
*eeprom_ch_info = (struct iwl_eeprom_channel *)
|
|
iwl_eeprom_query_addr(shrd, offset);
|
|
*eeprom_ch_index = iwl_eeprom_band_3;
|
|
break;
|
|
case 4: /* 5.5GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
|
|
*eeprom_ch_info = (struct iwl_eeprom_channel *)
|
|
iwl_eeprom_query_addr(shrd, offset);
|
|
*eeprom_ch_index = iwl_eeprom_band_4;
|
|
break;
|
|
case 5: /* 5.7GHz band */
|
|
*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
|
|
*eeprom_ch_info = (struct iwl_eeprom_channel *)
|
|
iwl_eeprom_query_addr(shrd, offset);
|
|
*eeprom_ch_index = iwl_eeprom_band_5;
|
|
break;
|
|
case 6: /* 2.4GHz ht40 channels */
|
|
*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
|
|
*eeprom_ch_info = (struct iwl_eeprom_channel *)
|
|
iwl_eeprom_query_addr(shrd, offset);
|
|
*eeprom_ch_index = iwl_eeprom_band_6;
|
|
break;
|
|
case 7: /* 5 GHz ht40 channels */
|
|
*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
|
|
*eeprom_ch_info = (struct iwl_eeprom_channel *)
|
|
iwl_eeprom_query_addr(shrd, offset);
|
|
*eeprom_ch_index = iwl_eeprom_band_7;
|
|
break;
|
|
default:
|
|
BUG();
|
|
return;
|
|
}
|
|
}
|
|
|
|
#define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \
|
|
? # x " " : "")
|
|
/**
|
|
* iwl_mod_ht40_chan_info - Copy ht40 channel info into driver's priv.
|
|
*
|
|
* Does not set up a command, or touch hardware.
|
|
*/
|
|
static int iwl_mod_ht40_chan_info(struct iwl_priv *priv,
|
|
enum ieee80211_band band, u16 channel,
|
|
const struct iwl_eeprom_channel *eeprom_ch,
|
|
u8 clear_ht40_extension_channel)
|
|
{
|
|
struct iwl_channel_info *ch_info;
|
|
|
|
ch_info = (struct iwl_channel_info *)
|
|
iwl_get_channel_info(priv, band, channel);
|
|
|
|
if (!is_channel_valid(ch_info))
|
|
return -1;
|
|
|
|
IWL_DEBUG_EEPROM(priv, "HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):"
|
|
" Ad-Hoc %ssupported\n",
|
|
ch_info->channel,
|
|
is_channel_a_band(ch_info) ?
|
|
"5.2" : "2.4",
|
|
CHECK_AND_PRINT(IBSS),
|
|
CHECK_AND_PRINT(ACTIVE),
|
|
CHECK_AND_PRINT(RADAR),
|
|
CHECK_AND_PRINT(WIDE),
|
|
CHECK_AND_PRINT(DFS),
|
|
eeprom_ch->flags,
|
|
eeprom_ch->max_power_avg,
|
|
((eeprom_ch->flags & EEPROM_CHANNEL_IBSS)
|
|
&& !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ?
|
|
"" : "not ");
|
|
|
|
ch_info->ht40_eeprom = *eeprom_ch;
|
|
ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg;
|
|
ch_info->ht40_flags = eeprom_ch->flags;
|
|
if (eeprom_ch->flags & EEPROM_CHANNEL_VALID)
|
|
ch_info->ht40_extension_channel &= ~clear_ht40_extension_channel;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
|
|
? # x " " : "")
|
|
|
|
/**
|
|
* iwl_init_channel_map - Set up driver's info for all possible channels
|
|
*/
|
|
int iwl_init_channel_map(struct iwl_priv *priv)
|
|
{
|
|
int eeprom_ch_count = 0;
|
|
const u8 *eeprom_ch_index = NULL;
|
|
const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
|
|
int band, ch;
|
|
struct iwl_channel_info *ch_info;
|
|
|
|
if (priv->channel_count) {
|
|
IWL_DEBUG_EEPROM(priv, "Channel map already initialized.\n");
|
|
return 0;
|
|
}
|
|
|
|
IWL_DEBUG_EEPROM(priv, "Initializing regulatory info from EEPROM\n");
|
|
|
|
priv->channel_count =
|
|
ARRAY_SIZE(iwl_eeprom_band_1) +
|
|
ARRAY_SIZE(iwl_eeprom_band_2) +
|
|
ARRAY_SIZE(iwl_eeprom_band_3) +
|
|
ARRAY_SIZE(iwl_eeprom_band_4) +
|
|
ARRAY_SIZE(iwl_eeprom_band_5);
|
|
|
|
IWL_DEBUG_EEPROM(priv, "Parsing data for %d channels.\n",
|
|
priv->channel_count);
|
|
|
|
priv->channel_info = kcalloc(priv->channel_count,
|
|
sizeof(struct iwl_channel_info),
|
|
GFP_KERNEL);
|
|
if (!priv->channel_info) {
|
|
IWL_ERR(priv, "Could not allocate channel_info\n");
|
|
priv->channel_count = 0;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ch_info = priv->channel_info;
|
|
|
|
/* Loop through the 5 EEPROM bands adding them in order to the
|
|
* channel map we maintain (that contains additional information than
|
|
* what just in the EEPROM) */
|
|
for (band = 1; band <= 5; band++) {
|
|
|
|
iwl_init_band_reference(priv, band, &eeprom_ch_count,
|
|
&eeprom_ch_info, &eeprom_ch_index);
|
|
|
|
/* Loop through each band adding each of the channels */
|
|
for (ch = 0; ch < eeprom_ch_count; ch++) {
|
|
ch_info->channel = eeprom_ch_index[ch];
|
|
ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
|
|
IEEE80211_BAND_5GHZ;
|
|
|
|
/* permanently store EEPROM's channel regulatory flags
|
|
* and max power in channel info database. */
|
|
ch_info->eeprom = eeprom_ch_info[ch];
|
|
|
|
/* Copy the run-time flags so they are there even on
|
|
* invalid channels */
|
|
ch_info->flags = eeprom_ch_info[ch].flags;
|
|
/* First write that ht40 is not enabled, and then enable
|
|
* one by one */
|
|
ch_info->ht40_extension_channel =
|
|
IEEE80211_CHAN_NO_HT40;
|
|
|
|
if (!(is_channel_valid(ch_info))) {
|
|
IWL_DEBUG_EEPROM(priv,
|
|
"Ch. %d Flags %x [%sGHz] - "
|
|
"No traffic\n",
|
|
ch_info->channel,
|
|
ch_info->flags,
|
|
is_channel_a_band(ch_info) ?
|
|
"5.2" : "2.4");
|
|
ch_info++;
|
|
continue;
|
|
}
|
|
|
|
/* Initialize regulatory-based run-time data */
|
|
ch_info->max_power_avg = ch_info->curr_txpow =
|
|
eeprom_ch_info[ch].max_power_avg;
|
|
ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
|
|
ch_info->min_power = 0;
|
|
|
|
IWL_DEBUG_EEPROM(priv, "Ch. %d [%sGHz] "
|
|
"%s%s%s%s%s%s(0x%02x %ddBm):"
|
|
" Ad-Hoc %ssupported\n",
|
|
ch_info->channel,
|
|
is_channel_a_band(ch_info) ?
|
|
"5.2" : "2.4",
|
|
CHECK_AND_PRINT_I(VALID),
|
|
CHECK_AND_PRINT_I(IBSS),
|
|
CHECK_AND_PRINT_I(ACTIVE),
|
|
CHECK_AND_PRINT_I(RADAR),
|
|
CHECK_AND_PRINT_I(WIDE),
|
|
CHECK_AND_PRINT_I(DFS),
|
|
eeprom_ch_info[ch].flags,
|
|
eeprom_ch_info[ch].max_power_avg,
|
|
((eeprom_ch_info[ch].
|
|
flags & EEPROM_CHANNEL_IBSS)
|
|
&& !(eeprom_ch_info[ch].
|
|
flags & EEPROM_CHANNEL_RADAR))
|
|
? "" : "not ");
|
|
|
|
ch_info++;
|
|
}
|
|
}
|
|
|
|
/* Check if we do have HT40 channels */
|
|
if (cfg(priv)->lib->eeprom_ops.regulatory_bands[5] ==
|
|
EEPROM_REGULATORY_BAND_NO_HT40 &&
|
|
cfg(priv)->lib->eeprom_ops.regulatory_bands[6] ==
|
|
EEPROM_REGULATORY_BAND_NO_HT40)
|
|
return 0;
|
|
|
|
/* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */
|
|
for (band = 6; band <= 7; band++) {
|
|
enum ieee80211_band ieeeband;
|
|
|
|
iwl_init_band_reference(priv, band, &eeprom_ch_count,
|
|
&eeprom_ch_info, &eeprom_ch_index);
|
|
|
|
/* EEPROM band 6 is 2.4, band 7 is 5 GHz */
|
|
ieeeband =
|
|
(band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
|
|
|
|
/* Loop through each band adding each of the channels */
|
|
for (ch = 0; ch < eeprom_ch_count; ch++) {
|
|
/* Set up driver's info for lower half */
|
|
iwl_mod_ht40_chan_info(priv, ieeeband,
|
|
eeprom_ch_index[ch],
|
|
&eeprom_ch_info[ch],
|
|
IEEE80211_CHAN_NO_HT40PLUS);
|
|
|
|
/* Set up driver's info for upper half */
|
|
iwl_mod_ht40_chan_info(priv, ieeeband,
|
|
eeprom_ch_index[ch] + 4,
|
|
&eeprom_ch_info[ch],
|
|
IEEE80211_CHAN_NO_HT40MINUS);
|
|
}
|
|
}
|
|
|
|
/* for newer device (6000 series and up)
|
|
* EEPROM contain enhanced tx power information
|
|
* driver need to process addition information
|
|
* to determine the max channel tx power limits
|
|
*/
|
|
if (cfg(priv)->lib->eeprom_ops.update_enhanced_txpower)
|
|
cfg(priv)->lib->eeprom_ops.update_enhanced_txpower(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* iwl_free_channel_map - undo allocations in iwl_init_channel_map
|
|
*/
|
|
void iwl_free_channel_map(struct iwl_priv *priv)
|
|
{
|
|
kfree(priv->channel_info);
|
|
priv->channel_count = 0;
|
|
}
|
|
|
|
/**
|
|
* iwl_get_channel_info - Find driver's private channel info
|
|
*
|
|
* Based on band and channel number.
|
|
*/
|
|
const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
|
|
enum ieee80211_band band, u16 channel)
|
|
{
|
|
int i;
|
|
|
|
switch (band) {
|
|
case IEEE80211_BAND_5GHZ:
|
|
for (i = 14; i < priv->channel_count; i++) {
|
|
if (priv->channel_info[i].channel == channel)
|
|
return &priv->channel_info[i];
|
|
}
|
|
break;
|
|
case IEEE80211_BAND_2GHZ:
|
|
if (channel >= 1 && channel <= 14)
|
|
return &priv->channel_info[channel - 1];
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void iwl_rf_config(struct iwl_priv *priv)
|
|
{
|
|
u16 radio_cfg;
|
|
|
|
radio_cfg = iwl_eeprom_query16(priv->shrd, EEPROM_RADIO_CONFIG);
|
|
|
|
/* write radio config values to register */
|
|
if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX) {
|
|
iwl_set_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
|
|
EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
|
|
EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
|
|
EEPROM_RF_CFG_DASH_MSK(radio_cfg));
|
|
IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
|
|
EEPROM_RF_CFG_TYPE_MSK(radio_cfg),
|
|
EEPROM_RF_CFG_STEP_MSK(radio_cfg),
|
|
EEPROM_RF_CFG_DASH_MSK(radio_cfg));
|
|
} else
|
|
WARN_ON(1);
|
|
|
|
/* set CSR_HW_CONFIG_REG for uCode use */
|
|
iwl_set_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
|
|
CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
|
|
CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
|
|
}
|