iwl-5000.c revision 02f6f659b0080e60021aae3503163576f88c5ba8 
1/******************************************************************************
2 *
3 * Copyright(c) 2007 - 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/sched.h>
32#include <linux/skbuff.h>
33#include <linux/netdevice.h>
34#include <linux/wireless.h>
35#include <net/mac80211.h>
36#include <linux/etherdevice.h>
37#include <asm/unaligned.h>
38#include <linux/stringify.h>
39
40#include "iwl-eeprom.h"
41#include "iwl-dev.h"
42#include "iwl-core.h"
43#include "iwl-io.h"
44#include "iwl-sta.h"
45#include "iwl-helpers.h"
46#include "iwl-agn.h"
47#include "iwl-agn-hw.h"
48#include "iwl-5000-hw.h"
49
50/* Highest firmware API version supported */
51#define IWL5000_UCODE_API_MAX 5
52#define IWL5150_UCODE_API_MAX 2
53
54/* Lowest firmware API version supported */
55#define IWL5000_UCODE_API_MIN 1
56#define IWL5150_UCODE_API_MIN 1
57
58#define IWL5000_FW_PRE "iwlwifi-5000-"
59#define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode"
60
61#define IWL5150_FW_PRE "iwlwifi-5150-"
62#define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode"
63
64/* NIC configuration for 5000 series */
65static void iwl5000_nic_config(struct iwl_priv *priv)
66{
67	unsigned long flags;
68
69	iwl_rf_config(priv);
70
71	spin_lock_irqsave(&priv->lock, flags);
72
73	/* W/A : NIC is stuck in a reset state after Early PCIe power off
74	 * (PCIe power is lost before PERST# is asserted),
75	 * causing ME FW to lose ownership and not being able to obtain it back.
76	 */
77	iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
78				APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
79				~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
80
81
82	spin_unlock_irqrestore(&priv->lock, flags);
83}
84
85static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
86	.min_nrg_cck = 95,
87	.max_nrg_cck = 0, /* not used, set to 0 */
88	.auto_corr_min_ofdm = 90,
89	.auto_corr_min_ofdm_mrc = 170,
90	.auto_corr_min_ofdm_x1 = 120,
91	.auto_corr_min_ofdm_mrc_x1 = 240,
92
93	.auto_corr_max_ofdm = 120,
94	.auto_corr_max_ofdm_mrc = 210,
95	.auto_corr_max_ofdm_x1 = 120,
96	.auto_corr_max_ofdm_mrc_x1 = 240,
97
98	.auto_corr_min_cck = 125,
99	.auto_corr_max_cck = 200,
100	.auto_corr_min_cck_mrc = 170,
101	.auto_corr_max_cck_mrc = 400,
102	.nrg_th_cck = 95,
103	.nrg_th_ofdm = 95,
104
105	.barker_corr_th_min = 190,
106	.barker_corr_th_min_mrc = 390,
107	.nrg_th_cca = 62,
108};
109
110static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
111	.min_nrg_cck = 95,
112	.max_nrg_cck = 0, /* not used, set to 0 */
113	.auto_corr_min_ofdm = 90,
114	.auto_corr_min_ofdm_mrc = 170,
115	.auto_corr_min_ofdm_x1 = 105,
116	.auto_corr_min_ofdm_mrc_x1 = 220,
117
118	.auto_corr_max_ofdm = 120,
119	.auto_corr_max_ofdm_mrc = 210,
120	/* max = min for performance bug in 5150 DSP */
121	.auto_corr_max_ofdm_x1 = 105,
122	.auto_corr_max_ofdm_mrc_x1 = 220,
123
124	.auto_corr_min_cck = 125,
125	.auto_corr_max_cck = 200,
126	.auto_corr_min_cck_mrc = 170,
127	.auto_corr_max_cck_mrc = 400,
128	.nrg_th_cck = 95,
129	.nrg_th_ofdm = 95,
130
131	.barker_corr_th_min = 190,
132	.barker_corr_th_min_mrc = 390,
133	.nrg_th_cca = 62,
134};
135
136static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
137{
138	const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
139	s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
140			iwl_temp_calib_to_offset(priv);
141
142	priv->hw_params.ct_kill_threshold = threshold * volt2temp_coef;
143}
144
145static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
146{
147	/* want Celsius */
148	priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
149}
150
151static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
152{
153	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
154	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
155		priv->cfg->base_params->num_of_queues =
156			iwlagn_mod_params.num_of_queues;
157
158	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
159	priv->hw_params.scd_bc_tbls_size =
160			priv->cfg->base_params->num_of_queues *
161			sizeof(struct iwlagn_scd_bc_tbl);
162	priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
163	priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
164	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
165
166	priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
167	priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
168
169	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
170					BIT(IEEE80211_BAND_5GHZ);
171
172	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
173	priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
174	priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
175	priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
176
177	iwl5000_set_ct_threshold(priv);
178
179	/* Set initial sensitivity parameters */
180	/* Set initial calibration set */
181	priv->hw_params.sens = &iwl5000_sensitivity;
182	priv->hw_params.calib_init_cfg =
183		BIT(IWL_CALIB_XTAL)		|
184		BIT(IWL_CALIB_LO)		|
185		BIT(IWL_CALIB_TX_IQ)		|
186		BIT(IWL_CALIB_TX_IQ_PERD)	|
187		BIT(IWL_CALIB_BASE_BAND);
188
189	priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
190
191	return 0;
192}
193
194static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
195{
196	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
197	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
198		priv->cfg->base_params->num_of_queues =
199			iwlagn_mod_params.num_of_queues;
200
201	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
202	priv->hw_params.scd_bc_tbls_size =
203			priv->cfg->base_params->num_of_queues *
204			sizeof(struct iwlagn_scd_bc_tbl);
205	priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
206	priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
207	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
208
209	priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
210	priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
211
212	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
213					BIT(IEEE80211_BAND_5GHZ);
214
215	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
216	priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
217	priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
218	priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
219
220	iwl5150_set_ct_threshold(priv);
221
222	/* Set initial sensitivity parameters */
223	/* Set initial calibration set */
224	priv->hw_params.sens = &iwl5150_sensitivity;
225	priv->hw_params.calib_init_cfg =
226		BIT(IWL_CALIB_LO)		|
227		BIT(IWL_CALIB_TX_IQ)		|
228		BIT(IWL_CALIB_BASE_BAND);
229	if (priv->cfg->need_dc_calib)
230		priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_DC);
231
232	priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
233
234	return 0;
235}
236
237static void iwl5150_temperature(struct iwl_priv *priv)
238{
239	u32 vt = 0;
240	s32 offset =  iwl_temp_calib_to_offset(priv);
241
242	vt = le32_to_cpu(priv->statistics.common.temperature);
243	vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
244	/* now vt hold the temperature in Kelvin */
245	priv->temperature = KELVIN_TO_CELSIUS(vt);
246	iwl_tt_handler(priv);
247}
248
249static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
250				     struct ieee80211_channel_switch *ch_switch)
251{
252	/*
253	 * MULTI-FIXME
254	 * See iwl_mac_channel_switch.
255	 */
256	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
257	struct iwl5000_channel_switch_cmd cmd;
258	const struct iwl_channel_info *ch_info;
259	u32 switch_time_in_usec, ucode_switch_time;
260	u16 ch;
261	u32 tsf_low;
262	u8 switch_count;
263	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
264	struct ieee80211_vif *vif = ctx->vif;
265	struct iwl_host_cmd hcmd = {
266		.id = REPLY_CHANNEL_SWITCH,
267		.len = { sizeof(cmd), },
268		.flags = CMD_SYNC,
269		.data = { &cmd, },
270	};
271
272	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
273	ch = ch_switch->channel->hw_value;
274	IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
275		      ctx->active.channel, ch);
276	cmd.channel = cpu_to_le16(ch);
277	cmd.rxon_flags = ctx->staging.flags;
278	cmd.rxon_filter_flags = ctx->staging.filter_flags;
279	switch_count = ch_switch->count;
280	tsf_low = ch_switch->timestamp & 0x0ffffffff;
281	/*
282	 * calculate the ucode channel switch time
283	 * adding TSF as one of the factor for when to switch
284	 */
285	if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
286		if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
287		    beacon_interval)) {
288			switch_count -= (priv->ucode_beacon_time -
289				tsf_low) / beacon_interval;
290		} else
291			switch_count = 0;
292	}
293	if (switch_count <= 1)
294		cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
295	else {
296		switch_time_in_usec =
297			vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
298		ucode_switch_time = iwl_usecs_to_beacons(priv,
299							 switch_time_in_usec,
300							 beacon_interval);
301		cmd.switch_time = iwl_add_beacon_time(priv,
302						      priv->ucode_beacon_time,
303						      ucode_switch_time,
304						      beacon_interval);
305	}
306	IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
307		      cmd.switch_time);
308	ch_info = iwl_get_channel_info(priv, priv->band, ch);
309	if (ch_info)
310		cmd.expect_beacon = is_channel_radar(ch_info);
311	else {
312		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
313			ctx->active.channel, ch);
314		return -EFAULT;
315	}
316
317	return priv->trans.ops->send_cmd(priv, &hcmd);
318}
319
320static struct iwl_lib_ops iwl5000_lib = {
321	.set_hw_params = iwl5000_hw_set_hw_params,
322	.rx_handler_setup = iwlagn_rx_handler_setup,
323	.setup_deferred_work = iwlagn_setup_deferred_work,
324	.is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
325	.update_chain_flags = iwl_update_chain_flags,
326	.set_channel_switch = iwl5000_hw_channel_switch,
327	.apm_ops = {
328		.init = iwl_apm_init,
329		.config = iwl5000_nic_config,
330	},
331	.eeprom_ops = {
332		.regulatory_bands = {
333			EEPROM_REG_BAND_1_CHANNELS,
334			EEPROM_REG_BAND_2_CHANNELS,
335			EEPROM_REG_BAND_3_CHANNELS,
336			EEPROM_REG_BAND_4_CHANNELS,
337			EEPROM_REG_BAND_5_CHANNELS,
338			EEPROM_REG_BAND_24_HT40_CHANNELS,
339			EEPROM_REG_BAND_52_HT40_CHANNELS
340		},
341		.query_addr = iwlagn_eeprom_query_addr,
342	},
343	.temp_ops = {
344		.temperature = iwlagn_temperature,
345	 },
346};
347
348static struct iwl_lib_ops iwl5150_lib = {
349	.set_hw_params = iwl5150_hw_set_hw_params,
350	.rx_handler_setup = iwlagn_rx_handler_setup,
351	.setup_deferred_work = iwlagn_setup_deferred_work,
352	.is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
353	.update_chain_flags = iwl_update_chain_flags,
354	.set_channel_switch = iwl5000_hw_channel_switch,
355	.apm_ops = {
356		.init = iwl_apm_init,
357		.config = iwl5000_nic_config,
358	},
359	.eeprom_ops = {
360		.regulatory_bands = {
361			EEPROM_REG_BAND_1_CHANNELS,
362			EEPROM_REG_BAND_2_CHANNELS,
363			EEPROM_REG_BAND_3_CHANNELS,
364			EEPROM_REG_BAND_4_CHANNELS,
365			EEPROM_REG_BAND_5_CHANNELS,
366			EEPROM_REG_BAND_24_HT40_CHANNELS,
367			EEPROM_REG_BAND_52_HT40_CHANNELS
368		},
369		.query_addr = iwlagn_eeprom_query_addr,
370	},
371	.temp_ops = {
372		.temperature = iwl5150_temperature,
373	 },
374};
375
376static const struct iwl_ops iwl5000_ops = {
377	.lib = &iwl5000_lib,
378	.utils = &iwlagn_hcmd_utils,
379};
380
381static const struct iwl_ops iwl5150_ops = {
382	.lib = &iwl5150_lib,
383	.utils = &iwlagn_hcmd_utils,
384};
385
386static struct iwl_base_params iwl5000_base_params = {
387	.eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
388	.num_of_queues = IWLAGN_NUM_QUEUES,
389	.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
390	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
391	.led_compensation = 51,
392	.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
393	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
394	.chain_noise_scale = 1000,
395	.wd_timeout = IWL_LONG_WD_TIMEOUT,
396	.max_event_log_size = 512,
397};
398static struct iwl_ht_params iwl5000_ht_params = {
399	.ht_greenfield_support = true,
400};
401
402#define IWL_DEVICE_5000						\
403	.fw_name_pre = IWL5000_FW_PRE,				\
404	.ucode_api_max = IWL5000_UCODE_API_MAX,			\
405	.ucode_api_min = IWL5000_UCODE_API_MIN,			\
406	.eeprom_ver = EEPROM_5000_EEPROM_VERSION,		\
407	.eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,	\
408	.ops = &iwl5000_ops,					\
409	.base_params = &iwl5000_base_params,			\
410	.led_mode = IWL_LED_BLINK
411
412struct iwl_cfg iwl5300_agn_cfg = {
413	.name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
414	IWL_DEVICE_5000,
415	/* at least EEPROM 0x11A has wrong info */
416	.valid_tx_ant = ANT_ABC,	/* .cfg overwrite */
417	.valid_rx_ant = ANT_ABC,	/* .cfg overwrite */
418	.ht_params = &iwl5000_ht_params,
419};
420
421struct iwl_cfg iwl5100_bgn_cfg = {
422	.name = "Intel(R) WiFi Link 5100 BGN",
423	IWL_DEVICE_5000,
424	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
425	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
426	.ht_params = &iwl5000_ht_params,
427};
428
429struct iwl_cfg iwl5100_abg_cfg = {
430	.name = "Intel(R) WiFi Link 5100 ABG",
431	IWL_DEVICE_5000,
432	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
433	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
434};
435
436struct iwl_cfg iwl5100_agn_cfg = {
437	.name = "Intel(R) WiFi Link 5100 AGN",
438	IWL_DEVICE_5000,
439	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
440	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
441	.ht_params = &iwl5000_ht_params,
442};
443
444struct iwl_cfg iwl5350_agn_cfg = {
445	.name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
446	.fw_name_pre = IWL5000_FW_PRE,
447	.ucode_api_max = IWL5000_UCODE_API_MAX,
448	.ucode_api_min = IWL5000_UCODE_API_MIN,
449	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,
450	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
451	.ops = &iwl5000_ops,
452	.base_params = &iwl5000_base_params,
453	.ht_params = &iwl5000_ht_params,
454	.led_mode = IWL_LED_BLINK,
455	.internal_wimax_coex = true,
456};
457
458#define IWL_DEVICE_5150						\
459	.fw_name_pre = IWL5150_FW_PRE,				\
460	.ucode_api_max = IWL5150_UCODE_API_MAX,			\
461	.ucode_api_min = IWL5150_UCODE_API_MIN,			\
462	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,		\
463	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,	\
464	.ops = &iwl5150_ops,					\
465	.base_params = &iwl5000_base_params,			\
466	.need_dc_calib = true,					\
467	.led_mode = IWL_LED_BLINK,				\
468	.internal_wimax_coex = true
469
470struct iwl_cfg iwl5150_agn_cfg = {
471	.name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
472	IWL_DEVICE_5150,
473	.ht_params = &iwl5000_ht_params,
474
475};
476
477struct iwl_cfg iwl5150_abg_cfg = {
478	.name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
479	IWL_DEVICE_5150,
480};
481
482MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
483MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));
484