1/******************************************************************************
  2 *
  3 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
  4 *
  5 * This program is free software; you can redistribute it and/or modify it
  6 * under the terms of version 2 of the GNU General Public License as
  7 * published by the Free Software Foundation.
  8 *
  9 * This program is distributed in the hope that it will be useful, but WITHOUT
 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 12 * more details.
 13 *
 14 * You should have received a copy of the GNU General Public License along with
 15 * this program; if not, write to the Free Software Foundation, Inc.,
 16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 17 *
 18 * The full GNU General Public License is included in this distribution in the
 19 * file called LICENSE.
 20 *
 21 * Contact Information:
 22 *  Intel Linux Wireless <ilw@linux.intel.com>
 23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 24 *
 25 *****************************************************************************/
 26
 27#include <linux/kernel.h>
 28#include <linux/module.h>
 29#include <linux/init.h>
 30#include <linux/delay.h>
 31#include <linux/skbuff.h>
 32#include <linux/netdevice.h>
 33#include <linux/wireless.h>
 34#include <net/mac80211.h>
 35#include <linux/etherdevice.h>
 36#include <asm/unaligned.h>
 37#include <linux/stringify.h>
 38
 39#include "iwl-eeprom.h"
 40#include "iwl-dev.h"
 41#include "iwl-core.h"
 42#include "iwl-io.h"
 43#include "iwl-sta.h"
 44#include "iwl-agn.h"
 45#include "iwl-helpers.h"
 46#include "iwl-agn-hw.h"
 47
 48/* Highest firmware API version supported */
 49#define IWL1000_UCODE_API_MAX 5
 50#define IWL100_UCODE_API_MAX 5
 51
 52/* Lowest firmware API version supported */
 53#define IWL1000_UCODE_API_MIN 1
 54#define IWL100_UCODE_API_MIN 5
 55
 56#define IWL1000_FW_PRE "iwlwifi-1000-"
 57#define IWL1000_MODULE_FIRMWARE(api) IWL1000_FW_PRE __stringify(api) ".ucode"
 58
 59#define IWL100_FW_PRE "iwlwifi-100-"
 60#define IWL100_MODULE_FIRMWARE(api) IWL100_FW_PRE __stringify(api) ".ucode"
 61
 62
 63/*
 64 * For 1000, use advance thermal throttling critical temperature threshold,
 65 * but legacy thermal management implementation for now.
 66 * This is for the reason of 1000 uCode using advance thermal throttling API
 67 * but not implement ct_kill_exit based on ct_kill exit temperature
 68 * so the thermal throttling will still based on legacy thermal throttling
 69 * management.
 70 * The code here need to be modified once 1000 uCode has the advanced thermal
 71 * throttling algorithm in place
 72 */
 73static void iwl1000_set_ct_threshold(struct iwl_priv *priv)
 74{
 75	/* want Celsius */
 76	priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
 77	priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
 78}
 79
 80/* NIC configuration for 1000 series */
 81static void iwl1000_nic_config(struct iwl_priv *priv)
 82{
 83	/* set CSR_HW_CONFIG_REG for uCode use */
 84	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 85		    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 86		    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 87
 88	/* Setting digital SVR for 1000 card to 1.32V */
 89	/* locking is acquired in iwl_set_bits_mask_prph() function */
 90	iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
 91				APMG_SVR_DIGITAL_VOLTAGE_1_32,
 92				~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
 93}
 94
 95static struct iwl_sensitivity_ranges iwl1000_sensitivity = {
 96	.min_nrg_cck = 95,
 97	.max_nrg_cck = 0, /* not used, set to 0 */
 98	.auto_corr_min_ofdm = 90,
 99	.auto_corr_min_ofdm_mrc = 170,
100	.auto_corr_min_ofdm_x1 = 120,
101	.auto_corr_min_ofdm_mrc_x1 = 240,
102
103	.auto_corr_max_ofdm = 120,
104	.auto_corr_max_ofdm_mrc = 210,
105	.auto_corr_max_ofdm_x1 = 155,
106	.auto_corr_max_ofdm_mrc_x1 = 290,
107
108	.auto_corr_min_cck = 125,
109	.auto_corr_max_cck = 200,
110	.auto_corr_min_cck_mrc = 170,
111	.auto_corr_max_cck_mrc = 400,
112	.nrg_th_cck = 95,
113	.nrg_th_ofdm = 95,
114
115	.barker_corr_th_min = 190,
116	.barker_corr_th_min_mrc = 390,
117	.nrg_th_cca = 62,
118};
119
120static int iwl1000_hw_set_hw_params(struct iwl_priv *priv)
121{
122	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
123	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
124		priv->cfg->base_params->num_of_queues =
125			iwlagn_mod_params.num_of_queues;
126
127	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
128	priv->hw_params.scd_bc_tbls_size =
129			priv->cfg->base_params->num_of_queues *
130			sizeof(struct iwlagn_scd_bc_tbl);
131	priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
132	priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
133	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
134
135	priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
136	priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
137
138	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
139					BIT(IEEE80211_BAND_5GHZ);
140
141	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
142	if (priv->cfg->rx_with_siso_diversity)
143		priv->hw_params.rx_chains_num = 1;
144	else
145		priv->hw_params.rx_chains_num =
146			num_of_ant(priv->cfg->valid_rx_ant);
147	priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
148	priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
149
150	iwl1000_set_ct_threshold(priv);
151
152	/* Set initial sensitivity parameters */
153	/* Set initial calibration set */
154	priv->hw_params.sens = &iwl1000_sensitivity;
155	priv->hw_params.calib_init_cfg =
156			BIT(IWL_CALIB_XTAL)		|
157			BIT(IWL_CALIB_LO)		|
158			BIT(IWL_CALIB_TX_IQ) 		|
159			BIT(IWL_CALIB_TX_IQ_PERD)	|
160			BIT(IWL_CALIB_BASE_BAND);
161	if (priv->cfg->need_dc_calib)
162		priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_DC);
163
164	priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
165
166	return 0;
167}
168
169static struct iwl_lib_ops iwl1000_lib = {
170	.set_hw_params = iwl1000_hw_set_hw_params,
171	.nic_config = iwl1000_nic_config,
172	.eeprom_ops = {
173		.regulatory_bands = {
174			EEPROM_REG_BAND_1_CHANNELS,
175			EEPROM_REG_BAND_2_CHANNELS,
176			EEPROM_REG_BAND_3_CHANNELS,
177			EEPROM_REG_BAND_4_CHANNELS,
178			EEPROM_REG_BAND_5_CHANNELS,
179			EEPROM_REG_BAND_24_HT40_CHANNELS,
180			EEPROM_REGULATORY_BAND_NO_HT40,
181		},
182	},
183	.temperature = iwlagn_temperature,
184};
185
186static struct iwl_base_params iwl1000_base_params = {
187	.num_of_queues = IWLAGN_NUM_QUEUES,
188	.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
189	.eeprom_size = OTP_LOW_IMAGE_SIZE,
190	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
191	.max_ll_items = OTP_MAX_LL_ITEMS_1000,
192	.shadow_ram_support = false,
193	.led_compensation = 51,
194	.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
195	.support_ct_kill_exit = true,
196	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF,
197	.chain_noise_scale = 1000,
198	.wd_timeout = IWL_DEF_WD_TIMEOUT,
199	.max_event_log_size = 128,
200};
201static struct iwl_ht_params iwl1000_ht_params = {
202	.ht_greenfield_support = true,
203	.use_rts_for_aggregation = true, /* use rts/cts protection */
204	.smps_mode = IEEE80211_SMPS_STATIC,
205};
206
207#define IWL_DEVICE_1000						\
208	.fw_name_pre = IWL1000_FW_PRE,				\
209	.ucode_api_max = IWL1000_UCODE_API_MAX,			\
210	.ucode_api_min = IWL1000_UCODE_API_MIN,			\
211	.eeprom_ver = EEPROM_1000_EEPROM_VERSION,		\
212	.eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,	\
213	.lib = &iwl1000_lib,					\
214	.base_params = &iwl1000_base_params,			\
215	.led_mode = IWL_LED_BLINK
216
217struct iwl_cfg iwl1000_bgn_cfg = {
218	.name = "Intel(R) Centrino(R) Wireless-N 1000 BGN",
219	IWL_DEVICE_1000,
220	.ht_params = &iwl1000_ht_params,
221};
222
223struct iwl_cfg iwl1000_bg_cfg = {
224	.name = "Intel(R) Centrino(R) Wireless-N 1000 BG",
225	IWL_DEVICE_1000,
226};
227
228#define IWL_DEVICE_100						\
229	.fw_name_pre = IWL100_FW_PRE,				\
230	.ucode_api_max = IWL100_UCODE_API_MAX,			\
231	.ucode_api_min = IWL100_UCODE_API_MIN,			\
232	.eeprom_ver = EEPROM_1000_EEPROM_VERSION,		\
233	.eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,	\
234	.lib = &iwl1000_lib,					\
235	.base_params = &iwl1000_base_params,			\
236	.led_mode = IWL_LED_RF_STATE,				\
237	.rx_with_siso_diversity = true
238
239struct iwl_cfg iwl100_bgn_cfg = {
240	.name = "Intel(R) Centrino(R) Wireless-N 100 BGN",
241	IWL_DEVICE_100,
242	.ht_params = &iwl1000_ht_params,
243};
244
245struct iwl_cfg iwl100_bg_cfg = {
246	.name = "Intel(R) Centrino(R) Wireless-N 100 BG",
247	IWL_DEVICE_100,
248};
249
250MODULE_FIRMWARE(IWL1000_MODULE_FIRMWARE(IWL1000_UCODE_API_MAX));
251MODULE_FIRMWARE(IWL100_MODULE_FIRMWARE(IWL100_UCODE_API_MAX));