iwlwifi: Moving EEPROM handling in iwlcore module

This patch move EEPROM code into iwl core module

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 604 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
new file mode 100644
index 000000000000..0064387dea91
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
@@ -0,0 +1,205 @@
+/******************************************************************************
+ *
+ * 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"
+#include "iwl-4965-debug.h"
+#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);
+
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.h b/drivers/net/wireless/iwlwifi/iwl-eeprom.h
new file mode 100644
index 000000000000..7827566dcc8b
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.h
@@ -0,0 +1,399 @@
+/******************************************************************************
+ *
+ * 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.
+ *****************************************************************************/
+
+#ifndef __iwl_eeprom_h__
+#define __iwl_eeprom_h__
+
+struct iwl4965_priv;
+
+/*
+ * EEPROM access time values:
+ *
+ * Driver initiates EEPROM read by writing byte address << 1 to CSR_EEPROM_REG,
+ *   then clearing (with subsequent read/modify/write) CSR_EEPROM_REG bit
+ *   CSR_EEPROM_REG_BIT_CMD (0x2).
+ * Driver then polls CSR_EEPROM_REG for CSR_EEPROM_REG_READ_VALID_MSK (0x1).
+ * When polling, wait 10 uSec between polling loops, up to a maximum 5000 uSec.
+ * Driver reads 16-bit value from bits 31-16 of CSR_EEPROM_REG.
+ */
+#define IWL_EEPROM_ACCESS_TIMEOUT       5000 /* uSec */
+#define IWL_EEPROM_ACCESS_DELAY         10   /* uSec */
+
+#define IWL_EEPROM_SEM_TIMEOUT          10   /* milliseconds */
+#define IWL_EEPROM_SEM_RETRY_LIMIT      1000 /* number of attempts (not time) */
+
+
+/*
+ * Regulatory channel usage flags in EEPROM struct iwl4965_eeprom_channel.flags.
+ *
+ * IBSS and/or AP operation is allowed *only* on those channels with
+ * (VALID && IBSS && ACTIVE && !RADAR).  This restriction is in place because
+ * RADAR detection is not supported by the 4965 driver, but is a
+ * requirement for establishing a new network for legal operation on channels
+ * requiring RADAR detection or restricting ACTIVE scanning.
+ *
+ * NOTE:  "WIDE" flag does not indicate anything about "FAT" 40 MHz channels.
+ *        It only indicates that 20 MHz channel use is supported; FAT channel
+ *        usage is indicated by a separate set of regulatory flags for each
+ *        FAT channel pair.
+ *
+ * NOTE:  Using a channel inappropriately will result in a uCode error!
+ */
+#define IWL_NUM_TX_CALIB_GROUPS 5
+enum {
+        EEPROM_CHANNEL_VALID = (1 << 0),        /* usable for this SKU/geo */
+        EEPROM_CHANNEL_IBSS = (1 << 1),         /* usable as an IBSS channel */
+        /* Bit 2 Reserved */
+        EEPROM_CHANNEL_ACTIVE = (1 << 3),       /* active scanning allowed */
+        EEPROM_CHANNEL_RADAR = (1 << 4),        /* radar detection required */
+        EEPROM_CHANNEL_WIDE = (1 << 5),         /* 20 MHz channel okay */
+        EEPROM_CHANNEL_NARROW = (1 << 6),       /* 10 MHz channel (not used) */
+        EEPROM_CHANNEL_DFS = (1 << 7),  /* dynamic freq selection candidate */
+};
+
+/* SKU Capabilities */
+#define EEPROM_SKU_CAP_SW_RF_KILL_ENABLE                (1 << 0)
+#define EEPROM_SKU_CAP_HW_RF_KILL_ENABLE                (1 << 1)
+
+/* *regulatory* channel data format in eeprom, one for each channel.
+ * There are separate entries for FAT (40 MHz) vs. normal (20 MHz) channels. */
+struct iwl4965_eeprom_channel {
+        u8 flags;               /* EEPROM_CHANNEL_* flags copied from EEPROM */
+        s8 max_power_avg;       /* max power (dBm) on this chnl, limit 31 */
+} __attribute__ ((packed));
+
+/* 4965 has two radio transmitters (and 3 radio receivers) */
+#define EEPROM_TX_POWER_TX_CHAINS      (2)
+
+/* 4965 has room for up to 8 sets of txpower calibration data */
+#define EEPROM_TX_POWER_BANDS          (8)
+
+/* 4965 factory calibration measures txpower gain settings for
+ * each of 3 target output levels */
+#define EEPROM_TX_POWER_MEASUREMENTS   (3)
+
+#define EEPROM_4965_TX_POWER_VERSION        (2)
+
+/* 4965 driver does not work with txpower calibration version < 5.
+ * Look for this in calib_version member of struct iwl4965_eeprom. */
+#define EEPROM_TX_POWER_VERSION_NEW    (5)
+
+
+/*
+ * 4965 factory calibration data for one txpower level, on one channel,
+ * measured on one of the 2 tx chains (radio transmitter and associated
+ * antenna).  EEPROM contains:
+ *
+ * 1)  Temperature (degrees Celsius) of device when measurement was made.
+ *
+ * 2)  Gain table index used to achieve the target measurement power.
+ *     This refers to the "well-known" gain tables (see iwl-4965-hw.h).
+ *
+ * 3)  Actual measured output power, in half-dBm ("34" = 17 dBm).
+ *
+ * 4)  RF power amplifier detector level measurement (not used).
+ */
+struct iwl4965_eeprom_calib_measure {
+        u8 temperature;         /* Device temperature (Celsius) */
+        u8 gain_idx;            /* Index into gain table */
+        u8 actual_pow;          /* Measured RF output power, half-dBm */
+        s8 pa_det;              /* Power amp detector level (not used) */
+} __attribute__ ((packed));
+
+
+/*
+ * 4965 measurement set for one channel.  EEPROM contains:
+ *
+ * 1)  Channel number measured
+ *
+ * 2)  Measurements for each of 3 power levels for each of 2 radio transmitters
+ *     (a.k.a. "tx chains") (6 measurements altogether)
+ */
+struct iwl4965_eeprom_calib_ch_info {
+        u8 ch_num;
+        struct iwl4965_eeprom_calib_measure
+                measurements[EEPROM_TX_POWER_TX_CHAINS]
+                        [EEPROM_TX_POWER_MEASUREMENTS];
+} __attribute__ ((packed));
+
+/*
+ * 4965 txpower subband info.
+ *
+ * For each frequency subband, EEPROM contains the following:
+ *
+ * 1)  First and last channels within range of the subband.  "0" values
+ *     indicate that this sample set is not being used.
+ *
+ * 2)  Sample measurement sets for 2 channels close to the range endpoints.
+ */
+struct iwl4965_eeprom_calib_subband_info {
+        u8 ch_from;     /* channel number of lowest channel in subband */
+        u8 ch_to;       /* channel number of highest channel in subband */
+        struct iwl4965_eeprom_calib_ch_info ch1;
+        struct iwl4965_eeprom_calib_ch_info ch2;
+} __attribute__ ((packed));
+
+
+/*
+ * 4965 txpower calibration info.  EEPROM contains:
+ *
+ * 1)  Factory-measured saturation power levels (maximum levels at which
+ *     tx power amplifier can output a signal without too much distortion).
+ *     There is one level for 2.4 GHz band and one for 5 GHz band.  These
+ *     values apply to all channels within each of the bands.
+ *
+ * 2)  Factory-measured power supply voltage level.  This is assumed to be
+ *     constant (i.e. same value applies to all channels/bands) while the
+ *     factory measurements are being made.
+ *
+ * 3)  Up to 8 sets of factory-measured txpower calibration values.
+ *     These are for different frequency ranges, since txpower gain
+ *     characteristics of the analog radio circuitry vary with frequency.
+ *
+ *     Not all sets need to be filled with data;
+ *     struct iwl4965_eeprom_calib_subband_info contains range of channels
+ *     (0 if unused) for each set of data.
+ */
+struct iwl4965_eeprom_calib_info {
+        u8 saturation_power24;  /* half-dBm (e.g. "34" = 17 dBm) */
+        u8 saturation_power52;  /* half-dBm */
+        s16 voltage;            /* signed */
+        struct iwl4965_eeprom_calib_subband_info
+                band_info[EEPROM_TX_POWER_BANDS];
+} __attribute__ ((packed));
+
+
+
+/*
+ * 4965 EEPROM map
+ */
+struct iwl4965_eeprom {
+        u8 reserved0[16];
+#define EEPROM_DEVICE_ID                    (2*0x08)    /* 2 bytes */
+        u16 device_id;          /* abs.ofs: 16 */
+        u8 reserved1[2];
+#define EEPROM_PMC                          (2*0x0A)    /* 2 bytes */
+        u16 pmc;                /* abs.ofs: 20 */
+        u8 reserved2[20];
+#define EEPROM_MAC_ADDRESS                  (2*0x15)    /* 6  bytes */
+        u8 mac_address[6];      /* abs.ofs: 42 */
+        u8 reserved3[58];
+#define EEPROM_BOARD_REVISION               (2*0x35)    /* 2  bytes */
+        u16 board_revision;     /* abs.ofs: 106 */
+        u8 reserved4[11];
+#define EEPROM_BOARD_PBA_NUMBER             (2*0x3B+1)  /* 9  bytes */
+        u8 board_pba_number[9]; /* abs.ofs: 119 */
+        u8 reserved5[8];
+#define EEPROM_VERSION                      (2*0x44)    /* 2  bytes */
+        u16 version;            /* abs.ofs: 136 */
+#define EEPROM_SKU_CAP                      (2*0x45)    /* 1  bytes */
+        u8 sku_cap;             /* abs.ofs: 138 */
+#define EEPROM_LEDS_MODE                    (2*0x45+1)  /* 1  bytes */
+        u8 leds_mode;           /* abs.ofs: 139 */
+#define EEPROM_OEM_MODE                     (2*0x46)    /* 2  bytes */
+        u16 oem_mode;
+#define EEPROM_WOWLAN_MODE                  (2*0x47)    /* 2  bytes */
+        u16 wowlan_mode;        /* abs.ofs: 142 */
+#define EEPROM_LEDS_TIME_INTERVAL           (2*0x48)    /* 2  bytes */
+        u16 leds_time_interval; /* abs.ofs: 144 */
+#define EEPROM_LEDS_OFF_TIME                (2*0x49)    /* 1  bytes */
+        u8 leds_off_time;       /* abs.ofs: 146 */
+#define EEPROM_LEDS_ON_TIME                 (2*0x49+1)  /* 1  bytes */
+        u8 leds_on_time;        /* abs.ofs: 147 */
+#define EEPROM_ALMGOR_M_VERSION             (2*0x4A)    /* 1  bytes */
+        u8 almgor_m_version;    /* abs.ofs: 148 */
+#define EEPROM_ANTENNA_SWITCH_TYPE          (2*0x4A+1)  /* 1  bytes */
+        u8 antenna_switch_type; /* abs.ofs: 149 */
+        u8 reserved6[8];
+#define EEPROM_4965_BOARD_REVISION          (2*0x4F)    /* 2 bytes */
+        u16 board_revision_4965;        /* abs.ofs: 158 */
+        u8 reserved7[13];
+#define EEPROM_4965_BOARD_PBA               (2*0x56+1)  /* 9 bytes */
+        u8 board_pba_number_4965[9];    /* abs.ofs: 173 */
+        u8 reserved8[10];
+#define EEPROM_REGULATORY_SKU_ID            (2*0x60)    /* 4  bytes */
+        u8 sku_id[4];           /* abs.ofs: 192 */
+
+/*
+ * Per-channel regulatory data.
+ *
+ * Each channel that *might* be supported by 3945 or 4965 has a fixed location
+ * in EEPROM containing EEPROM_CHANNEL_* usage flags (LSB) and max regulatory
+ * txpower (MSB).
+ *
+ * Entries immediately below are for 20 MHz channel width.  FAT (40 MHz)
+ * channels (only for 4965, not supported by 3945) appear later in the EEPROM.
+ *
+ * 2.4 GHz channels 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
+ */
+#define EEPROM_REGULATORY_BAND_1            (2*0x62)    /* 2  bytes */
+        u16 band_1_count;       /* abs.ofs: 196 */
+#define EEPROM_REGULATORY_BAND_1_CHANNELS   (2*0x63)    /* 28 bytes */
+        struct iwl4965_eeprom_channel band_1_channels[14]; /* abs.ofs: 196 */
+
+/*
+ * 4.9 GHz channels 183, 184, 185, 187, 188, 189, 192, 196,
+ * 5.0 GHz channels 7, 8, 11, 12, 16
+ * (4915-5080MHz) (none of these is ever supported)
+ */
+#define EEPROM_REGULATORY_BAND_2            (2*0x71)    /* 2  bytes */
+        u16 band_2_count;       /* abs.ofs: 226 */
+#define EEPROM_REGULATORY_BAND_2_CHANNELS   (2*0x72)    /* 26 bytes */
+        struct iwl4965_eeprom_channel band_2_channels[13]; /* abs.ofs: 228 */
+
+/*
+ * 5.2 GHz channels 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
+ * (5170-5320MHz)
+ */
+#define EEPROM_REGULATORY_BAND_3            (2*0x7F)    /* 2  bytes */
+        u16 band_3_count;       /* abs.ofs: 254 */
+#define EEPROM_REGULATORY_BAND_3_CHANNELS   (2*0x80)    /* 24 bytes */
+        struct iwl4965_eeprom_channel band_3_channels[12]; /* abs.ofs: 256 */
+
+/*
+ * 5.5 GHz channels 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
+ * (5500-5700MHz)
+ */
+#define EEPROM_REGULATORY_BAND_4            (2*0x8C)    /* 2  bytes */
+        u16 band_4_count;       /* abs.ofs: 280 */
+#define EEPROM_REGULATORY_BAND_4_CHANNELS   (2*0x8D)    /* 22 bytes */
+        struct iwl4965_eeprom_channel band_4_channels[11]; /* abs.ofs: 282 */
+
+/*
+ * 5.7 GHz channels 145, 149, 153, 157, 161, 165
+ * (5725-5825MHz)
+ */
+#define EEPROM_REGULATORY_BAND_5            (2*0x98)    /* 2  bytes */
+        u16 band_5_count;       /* abs.ofs: 304 */
+#define EEPROM_REGULATORY_BAND_5_CHANNELS   (2*0x99)    /* 12 bytes */
+        struct iwl4965_eeprom_channel band_5_channels[6]; /* abs.ofs: 306 */
+
+        u8 reserved10[2];
+
+
+/*
+ * 2.4 GHz FAT channels 1 (5), 2 (6), 3 (7), 4 (8), 5 (9), 6 (10), 7 (11)
+ *
+ * The channel listed is the center of the lower 20 MHz half of the channel.
+ * The overall center frequency is actually 2 channels (10 MHz) above that,
+ * and the upper half of each FAT channel is centered 4 channels (20 MHz) away
+ * from the lower half; e.g. the upper half of FAT channel 1 is channel 5,
+ * and the overall FAT channel width centers on channel 3.
+ *
+ * NOTE:  The RXON command uses 20 MHz channel numbers to specify the
+ *        control channel to which to tune.  RXON also specifies whether the
+ *        control channel is the upper or lower half of a FAT channel.
+ *
+ * NOTE:  4965 does not support FAT channels on 2.4 GHz.
+ */
+#define EEPROM_REGULATORY_BAND_24_FAT_CHANNELS (2*0xA0) /* 14 bytes */
+        struct iwl4965_eeprom_channel band_24_channels[7]; /* abs.ofs: 320 */
+        u8 reserved11[2];
+
+/*
+ * 5.2 GHz FAT channels 36 (40), 44 (48), 52 (56), 60 (64),
+ * 100 (104), 108 (112), 116 (120), 124 (128), 132 (136), 149 (153), 157 (161)
+ */
+#define EEPROM_REGULATORY_BAND_52_FAT_CHANNELS (2*0xA8) /* 22 bytes */
+        struct iwl4965_eeprom_channel band_52_channels[11]; /* abs.ofs: 336 */
+        u8 reserved12[6];
+
+/*
+ * 4965 driver requires txpower calibration format version 5 or greater.
+ * Driver does not work with txpower calibration version < 5.
+ * This value is simply a 16-bit number, no major/minor versions here.
+ */
+#define EEPROM_CALIB_VERSION_OFFSET            (2*0xB6) /* 2 bytes */
+        u16 calib_version;      /* abs.ofs: 364 */
+        u8 reserved13[2];
+        u8 reserved14[96];      /* abs.ofs: 368 */
+
+/*
+ * 4965 Txpower calibration data.
+ */
+#define EEPROM_IWL_CALIB_TXPOWER_OFFSET        (2*0xE8) /* 48  bytes */
+        struct iwl4965_eeprom_calib_info calib_info;    /* abs.ofs: 464 */
+
+        u8 reserved16[140];     /* fill out to full 1024 byte block */
+
+
+} __attribute__ ((packed));
+
+#define IWL_EEPROM_IMAGE_SIZE 1024
+
+/* End of EEPROM */
+
+struct iwl_eeprom_ops {
+        int (*verify_signature) (struct iwl4965_priv *priv);
+        int (*acquire_semaphore) (struct iwl4965_priv *priv);
+        void (*release_semaphore) (struct iwl4965_priv *priv);
+};
+
+
+void iwl_eeprom_get_mac(const struct iwl4965_priv *priv, u8 *mac);
+int iwl_eeprom_init(struct iwl4965_priv *priv);
+
+int iwlcore_eeprom_verify_signature(struct iwl4965_priv *priv);
+int iwlcore_eeprom_acquire_semaphore(struct iwl4965_priv *priv);
+void iwlcore_eeprom_release_semaphore(struct iwl4965_priv *priv);
+
+#endif  /* __iwl_eeprom_h__ */