aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/iwlwifi/iwl-5000.c
blob: b3a365fea7bbd85b48cd22db06ccf0bdac1a5042 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
/******************************************************************************
 *
 * Copyright(c) 2007 - 2011 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.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 *****************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <net/mac80211.h>
#include <linux/etherdevice.h>
#include <asm/unaligned.h>
#include <linux/stringify.h>

#include "iwl-eeprom.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-agn.h"
#include "iwl-agn-hw.h"
#include "iwl-trans.h"
#include "iwl-shared.h"
#include "iwl-cfg.h"

/* Highest firmware API version supported */
#define IWL5000_UCODE_API_MAX 5
#define IWL5150_UCODE_API_MAX 2

/* Lowest firmware API version supported */
#define IWL5000_UCODE_API_MIN 1
#define IWL5150_UCODE_API_MIN 1

#define IWL5000_FW_PRE "iwlwifi-5000-"
#define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode"

#define IWL5150_FW_PRE "iwlwifi-5150-"
#define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode"

/* NIC configuration for 5000 series */
static void iwl5000_nic_config(struct iwl_priv *priv)
{
	unsigned long flags;

	iwl_rf_config(priv);

	spin_lock_irqsave(&priv->shrd->lock, flags);

	/* W/A : NIC is stuck in a reset state after Early PCIe power off
	 * (PCIe power is lost before PERST# is asserted),
	 * causing ME FW to lose ownership and not being able to obtain it back.
	 */
	iwl_set_bits_mask_prph(bus(priv), APMG_PS_CTRL_REG,
				APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
				~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);


	spin_unlock_irqrestore(&priv->shrd->lock, flags);
}

static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
	.min_nrg_cck = 100,
	.max_nrg_cck = 0, /* not used, set to 0 */
	.auto_corr_min_ofdm = 90,
	.auto_corr_min_ofdm_mrc = 170,
	.auto_corr_min_ofdm_x1 = 105,
	.auto_corr_min_ofdm_mrc_x1 = 220,

	.auto_corr_max_ofdm = 120,
	.auto_corr_max_ofdm_mrc = 210,
	.auto_corr_max_ofdm_x1 = 120,
	.auto_corr_max_ofdm_mrc_x1 = 240,

	.auto_corr_min_cck = 125,
	.auto_corr_max_cck = 200,
	.auto_corr_min_cck_mrc = 200,
	.auto_corr_max_cck_mrc = 400,
	.nrg_th_cck = 100,
	.nrg_th_ofdm = 100,

	.barker_corr_th_min = 190,
	.barker_corr_th_min_mrc = 390,
	.nrg_th_cca = 62,
};

static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
	.min_nrg_cck = 95,
	.max_nrg_cck = 0, /* not used, set to 0 */
	.auto_corr_min_ofdm = 90,
	.auto_corr_min_ofdm_mrc = 170,
	.auto_corr_min_ofdm_x1 = 105,
	.auto_corr_min_ofdm_mrc_x1 = 220,

	.auto_corr_max_ofdm = 120,
	.auto_corr_max_ofdm_mrc = 210,
	/* max = min for performance bug in 5150 DSP */
	.auto_corr_max_ofdm_x1 = 105,
	.auto_corr_max_ofdm_mrc_x1 = 220,

	.auto_corr_min_cck = 125,
	.auto_corr_max_cck = 200,
	.auto_corr_min_cck_mrc = 170,
	.auto_corr_max_cck_mrc = 400,
	.nrg_th_cck = 95,
	.nrg_th_ofdm = 95,

	.barker_corr_th_min = 190,
	.barker_corr_th_min_mrc = 390,
	.nrg_th_cca = 62,
};

#define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF	(-5)

static s32 iwl_temp_calib_to_offset(struct iwl_shared *shrd)
{
	u16 temperature, voltage;
	__le16 *temp_calib = (__le16 *)iwl_eeprom_query_addr(shrd,
				EEPROM_KELVIN_TEMPERATURE);

	temperature = le16_to_cpu(temp_calib[0]);
	voltage = le16_to_cpu(temp_calib[1]);

	/* offset = temp - volt / coeff */
	return (s32)(temperature - voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF);
}

static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
{
	const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
	s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
			iwl_temp_calib_to_offset(priv->shrd);

	hw_params(priv).ct_kill_threshold = threshold * volt2temp_coef;
}

static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
{
	/* want Celsius */
	hw_params(priv).ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
}

static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
{
	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
		cfg(priv)->base_params->num_of_queues =
			iwlagn_mod_params.num_of_queues;

	hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues;
	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;

	hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
	hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;

	hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
					BIT(IEEE80211_BAND_5GHZ);

	hw_params(priv).tx_chains_num = num_of_ant(cfg(priv)->valid_tx_ant);
	hw_params(priv).rx_chains_num = num_of_ant(cfg(priv)->valid_rx_ant);
	hw_params(priv).valid_tx_ant = cfg(priv)->valid_tx_ant;
	hw_params(priv).valid_rx_ant = cfg(priv)->valid_rx_ant;

	iwl5000_set_ct_threshold(priv);

	/* Set initial sensitivity parameters */
	hw_params(priv).sens = &iwl5000_sensitivity;

	return 0;
}

static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
{
	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
		cfg(priv)->base_params->num_of_queues =
			iwlagn_mod_params.num_of_queues;

	hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues;
	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;

	hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
	hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;

	hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
					BIT(IEEE80211_BAND_5GHZ);

	hw_params(priv).tx_chains_num = num_of_ant(cfg(priv)->valid_tx_ant);
	hw_params(priv).rx_chains_num = num_of_ant(cfg(priv)->valid_rx_ant);
	hw_params(priv).valid_tx_ant = cfg(priv)->valid_tx_ant;
	hw_params(priv).valid_rx_ant = cfg(priv)->valid_rx_ant;

	iwl5150_set_ct_threshold(priv);

	/* Set initial sensitivity parameters */
	hw_params(priv).sens = &iwl5150_sensitivity;

	return 0;
}

static void iwl5150_temperature(struct iwl_priv *priv)
{
	u32 vt = 0;
	s32 offset =  iwl_temp_calib_to_offset(priv->shrd);

	vt = le32_to_cpu(priv->statistics.common.temperature);
	vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
	/* now vt hold the temperature in Kelvin */
	priv->temperature = KELVIN_TO_CELSIUS(vt);
	iwl_tt_handler(priv);
}

static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
				     struct ieee80211_channel_switch *ch_switch)
{
	/*
	 * MULTI-FIXME
	 * See iwlagn_mac_channel_switch.
	 */
	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
	struct iwl5000_channel_switch_cmd cmd;
	const struct iwl_channel_info *ch_info;
	u32 switch_time_in_usec, ucode_switch_time;
	u16 ch;
	u32 tsf_low;
	u8 switch_count;
	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
	struct ieee80211_vif *vif = ctx->vif;
	struct iwl_host_cmd hcmd = {
		.id = REPLY_CHANNEL_SWITCH,
		.len = { sizeof(cmd), },
		.flags = CMD_SYNC,
		.data = { &cmd, },
	};

	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
	ch = ch_switch->channel->hw_value;
	IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
		      ctx->active.channel, ch);
	cmd.channel = cpu_to_le16(ch);
	cmd.rxon_flags = ctx->staging.flags;
	cmd.rxon_filter_flags = ctx->staging.filter_flags;
	switch_count = ch_switch->count;
	tsf_low = ch_switch->timestamp & 0x0ffffffff;
	/*
	 * calculate the ucode channel switch time
	 * adding TSF as one of the factor for when to switch
	 */
	if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
		if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
		    beacon_interval)) {
			switch_count -= (priv->ucode_beacon_time -
				tsf_low) / beacon_interval;
		} else
			switch_count = 0;
	}
	if (switch_count <= 1)
		cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
	else {
		switch_time_in_usec =
			vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
		ucode_switch_time = iwl_usecs_to_beacons(priv,
							 switch_time_in_usec,
							 beacon_interval);
		cmd.switch_time = iwl_add_beacon_time(priv,
						      priv->ucode_beacon_time,
						      ucode_switch_time,
						      beacon_interval);
	}
	IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
		      cmd.switch_time);
	ch_info = iwl_get_channel_info(priv, priv->band, ch);
	if (ch_info)
		cmd.expect_beacon = is_channel_radar(ch_info);
	else {
		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
			ctx->active.channel, ch);
		return -EFAULT;
	}

	return iwl_trans_send_cmd(trans(priv), &hcmd);
}

static struct iwl_lib_ops iwl5000_lib = {
	.set_hw_params = iwl5000_hw_set_hw_params,
	.set_channel_switch = iwl5000_hw_channel_switch,
	.nic_config = iwl5000_nic_config,
	.eeprom_ops = {
		.regulatory_bands = {
			EEPROM_REG_BAND_1_CHANNELS,
			EEPROM_REG_BAND_2_CHANNELS,
			EEPROM_REG_BAND_3_CHANNELS,
			EEPROM_REG_BAND_4_CHANNELS,
			EEPROM_REG_BAND_5_CHANNELS,
			EEPROM_REG_BAND_24_HT40_CHANNELS,
			EEPROM_REG_BAND_52_HT40_CHANNELS
		},
	},
	.temperature = iwlagn_temperature,
};

static struct iwl_lib_ops iwl5150_lib = {
	.set_hw_params = iwl5150_hw_set_hw_params,
	.set_channel_switch = iwl5000_hw_channel_switch,
	.nic_config = iwl5000_nic_config,
	.eeprom_ops = {
		.regulatory_bands = {
			EEPROM_REG_BAND_1_CHANNELS,
			EEPROM_REG_BAND_2_CHANNELS,
			EEPROM_REG_BAND_3_CHANNELS,
			EEPROM_REG_BAND_4_CHANNELS,
			EEPROM_REG_BAND_5_CHANNELS,
			EEPROM_REG_BAND_24_HT40_CHANNELS,
			EEPROM_REG_BAND_52_HT40_CHANNELS
		},
	},
	.temperature = iwl5150_temperature,
};

static struct iwl_base_params iwl5000_base_params = {
	.eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
	.num_of_queues = IWLAGN_NUM_QUEUES,
	.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
	.led_compensation = 51,
	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
	.chain_noise_scale = 1000,
	.wd_timeout = IWL_LONG_WD_TIMEOUT,
	.max_event_log_size = 512,
	.no_idle_support = true,
	.wd_disable = true,
};
static struct iwl_ht_params iwl5000_ht_params = {
	.ht_greenfield_support = true,
};

#define IWL_DEVICE_5000						\
	.fw_name_pre = IWL5000_FW_PRE,				\
	.ucode_api_max = IWL5000_UCODE_API_MAX,			\
	.ucode_api_min = IWL5000_UCODE_API_MIN,			\
	.eeprom_ver = EEPROM_5000_EEPROM_VERSION,		\
	.eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,	\
	.lib = &iwl5000_lib,					\
	.base_params = &iwl5000_base_params,			\
	.led_mode = IWL_LED_BLINK

struct iwl_cfg iwl5300_agn_cfg = {
	.name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
	IWL_DEVICE_5000,
	/* at least EEPROM 0x11A has wrong info */
	.valid_tx_ant = ANT_ABC,	/* .cfg overwrite */
	.valid_rx_ant = ANT_ABC,	/* .cfg overwrite */
	.ht_params = &iwl5000_ht_params,
};

struct iwl_cfg iwl5100_bgn_cfg = {
	.name = "Intel(R) WiFi Link 5100 BGN",
	IWL_DEVICE_5000,
	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
	.ht_params = &iwl5000_ht_params,
};

struct iwl_cfg iwl5100_abg_cfg = {
	.name = "Intel(R) WiFi Link 5100 ABG",
	IWL_DEVICE_5000,
	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
};

struct iwl_cfg iwl5100_agn_cfg = {
	.name = "Intel(R) WiFi Link 5100 AGN",
	IWL_DEVICE_5000,
	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
	.ht_params = &iwl5000_ht_params,
};

struct iwl_cfg iwl5350_agn_cfg = {
	.name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
	.fw_name_pre = IWL5000_FW_PRE,
	.ucode_api_max = IWL5000_UCODE_API_MAX,
	.ucode_api_min = IWL5000_UCODE_API_MIN,
	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,
	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
	.lib = &iwl5000_lib,
	.base_params = &iwl5000_base_params,
	.ht_params = &iwl5000_ht_params,
	.led_mode = IWL_LED_BLINK,
	.internal_wimax_coex = true,
};

#define IWL_DEVICE_5150						\
	.fw_name_pre = IWL5150_FW_PRE,				\
	.ucode_api_max = IWL5150_UCODE_API_MAX,			\
	.ucode_api_min = IWL5150_UCODE_API_MIN,			\
	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,		\
	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,	\
	.lib = &iwl5150_lib,					\
	.base_params = &iwl5000_base_params,			\
	.no_xtal_calib = true,					\
	.led_mode = IWL_LED_BLINK,				\
	.internal_wimax_coex = true

struct iwl_cfg iwl5150_agn_cfg = {
	.name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
	IWL_DEVICE_5150,
	.ht_params = &iwl5000_ht_params,

};

struct iwl_cfg iwl5150_abg_cfg = {
	.name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
	IWL_DEVICE_5150,
};

MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));