path: root/drivers/net/wireless/intel/iwlwifi/dvm/eeprom.c

// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2005-2014, 2018-2019, 2021, 2024 Intel Corporation
 */
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/export.h>

#include "iwl-drv.h"
#include "iwl-debug.h"
#include "iwl-io.h"
#include "iwl-prph.h"
#include "iwl-csr.h"
#include "agn.h"

/* EEPROM offset definitions */

/* indirect access definitions */
#define ADDRESS_MSK                 0x0000FFFF
#define INDIRECT_TYPE_MSK           0x000F0000
#define INDIRECT_HOST               0x00010000
#define INDIRECT_GENERAL            0x00020000
#define INDIRECT_REGULATORY         0x00030000
#define INDIRECT_CALIBRATION        0x00040000
#define INDIRECT_PROCESS_ADJST      0x00050000
#define INDIRECT_OTHERS             0x00060000
#define INDIRECT_TXP_LIMIT          0x00070000
#define INDIRECT_TXP_LIMIT_SIZE     0x00080000
#define INDIRECT_ADDRESS            0x00100000

/* corresponding link offsets in EEPROM */
#define EEPROM_LINK_HOST             (2*0x64)
#define EEPROM_LINK_GENERAL          (2*0x65)
#define EEPROM_LINK_REGULATORY       (2*0x66)
#define EEPROM_LINK_CALIBRATION      (2*0x67)
#define EEPROM_LINK_PROCESS_ADJST    (2*0x68)
#define EEPROM_LINK_OTHERS           (2*0x69)
#define EEPROM_LINK_TXP_LIMIT        (2*0x6a)
#define EEPROM_LINK_TXP_LIMIT_SIZE   (2*0x6b)

/* General */
#define EEPROM_DEVICE_ID                    (2*0x08)	/* 2 bytes */
#define EEPROM_SUBSYSTEM_ID		    (2*0x0A)	/* 2 bytes */
#define EEPROM_MAC_ADDRESS                  (2*0x15)	/* 6  bytes */
#define EEPROM_BOARD_REVISION               (2*0x35)	/* 2  bytes */
#define EEPROM_BOARD_PBA_NUMBER             (2*0x3B+1)	/* 9  bytes */
#define EEPROM_VERSION                      (2*0x44)	/* 2  bytes */
#define EEPROM_SKU_CAP                      (2*0x45)	/* 2  bytes */
#define EEPROM_OEM_MODE                     (2*0x46)	/* 2  bytes */
#define EEPROM_RADIO_CONFIG                 (2*0x48)	/* 2  bytes */
#define EEPROM_NUM_MAC_ADDRESS              (2*0x4C)	/* 2  bytes */

/* calibration */
struct iwl_eeprom_calib_hdr {
	u8 version;
	u8 pa_type;
	__le16 voltage;
} __packed;

#define EEPROM_CALIB_ALL	(INDIRECT_ADDRESS | INDIRECT_CALIBRATION)
#define EEPROM_XTAL		((2*0x128) | EEPROM_CALIB_ALL)

/* temperature */
#define EEPROM_KELVIN_TEMPERATURE	((2*0x12A) | EEPROM_CALIB_ALL)
#define EEPROM_RAW_TEMPERATURE		((2*0x12B) | EEPROM_CALIB_ALL)

/* SKU Capabilities (actual values from EEPROM definition) */
enum eeprom_sku_bits {
	EEPROM_SKU_CAP_BAND_24GHZ	= BIT(4),
	EEPROM_SKU_CAP_BAND_52GHZ	= BIT(5),
	EEPROM_SKU_CAP_11N_ENABLE	= BIT(6),
	EEPROM_SKU_CAP_AMT_ENABLE	= BIT(7),
	EEPROM_SKU_CAP_IPAN_ENABLE	= BIT(8)
};

/* radio config bits (actual values from EEPROM definition) */
#define EEPROM_RF_CFG_TYPE_MSK(x)   (x & 0x3)         /* bits 0-1   */
#define EEPROM_RF_CFG_STEP_MSK(x)   ((x >> 2)  & 0x3) /* bits 2-3   */
#define EEPROM_RF_CFG_DASH_MSK(x)   ((x >> 4)  & 0x3) /* bits 4-5   */
#define EEPROM_RF_CFG_PNUM_MSK(x)   ((x >> 6)  & 0x3) /* bits 6-7   */
#define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8)  & 0xF) /* bits 8-11  */
#define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */

/*
 * EEPROM bands
 * These are the channel numbers from each band in the order
 * that they are stored in the EEPROM band information. Note
 * that EEPROM bands aren't the same as mac80211 bands, and
 * there are even special "ht40 bands" in the EEPROM.
 */
static const u8 iwl_eeprom_band_1[14] = { /* 2.4 GHz */
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
};

static const u8 iwl_eeprom_band_2[] = {	/* 4915-5080MHz */
	183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
};

static const u8 iwl_eeprom_band_3[] = {	/* 5170-5320MHz */
	34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
};

static const u8 iwl_eeprom_band_4[] = {	/* 5500-5700MHz */
	100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
};

static const u8 iwl_eeprom_band_5[] = {	/* 5725-5825MHz */
	145, 149, 153, 157, 161, 165
};

static const u8 iwl_eeprom_band_6[] = {	/* 2.4 ht40 channel */
	1, 2, 3, 4, 5, 6, 7
};

static const u8 iwl_eeprom_band_7[] = {	/* 5.2 ht40 channel */
	36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
};

#define IWL_NUM_CHANNELS	(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))

/* rate data (static) */
static struct ieee80211_rate iwl_cfg80211_rates[] = {
	{ .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, },
	{ .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
	{ .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
	{ .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
	{ .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, },
	{ .bitrate = 9 * 10<