iwl-5000.c revision 6b6db91c8aa14fa9bd041321026d69b9f6ea42ff 
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#include "iwl-trans.h"
50
51/* Highest firmware API version supported */
52#define IWL5000_UCODE_API_MAX 5
53#define IWL5150_UCODE_API_MAX 2
54
55/* Lowest firmware API version supported */
56#define IWL5000_UCODE_API_MIN 1
57#define IWL5150_UCODE_API_MIN 1
58
59#define IWL5000_FW_PRE "iwlwifi-5000-"
60#define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode"
61
62#define IWL5150_FW_PRE "iwlwifi-5150-"
63#define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode"
64
65/* NIC configuration for 5000 series */
66static void iwl5000_nic_config(struct iwl_priv *priv)
67{
68	unsigned long flags;
69
70	iwl_rf_config(priv);
71
72	spin_lock_irqsave(&priv->lock, flags);
73
74	/* W/A : NIC is stuck in a reset state after Early PCIe power off
75	 * (PCIe power is lost before PERST# is asserted),
76	 * causing ME FW to lose ownership and not being able to obtain it back.
77	 */
78	iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
79				APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
80				~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
81
82
83	spin_unlock_irqrestore(&priv->lock, flags);
84}
85
86static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
87	.min_nrg_cck = 95,
88	.max_nrg_cck = 0, /* not used, set to 0 */
89	.auto_corr_min_ofdm = 90,
90	.auto_corr_min_ofdm_mrc = 170,
91	.auto_corr_min_ofdm_x1 = 120,
92	.auto_corr_min_ofdm_mrc_x1 = 240,
93
94	.auto_corr_max_ofdm = 120,
95	.auto_corr_max_ofdm_mrc = 210,
96	.auto_corr_max_ofdm_x1 = 120,
97	.auto_corr_max_ofdm_mrc_x1 = 240,
98
99	.auto_corr_min_cck = 125,
100	.auto_corr_max_cck = 200,
101	.auto_corr_min_cck_mrc = 170,
102	.auto_corr_max_cck_mrc = 400,
103	.nrg_th_cck = 95,
104	.nrg_th_ofdm = 95,
105
106	.barker_corr_th_min = 190,
107	.barker_corr_th_min_mrc = 390,
108	.nrg_th_cca = 62,
109};
110
111static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
112	.min_nrg_cck = 95,
113	.max_nrg_cck = 0, /* not used, set to 0 */
114	.auto_corr_min_ofdm = 90,
115	.auto_corr_min_ofdm_mrc = 170,
116	.auto_corr_min_ofdm_x1 = 105,
117	.auto_corr_min_ofdm_mrc_x1 = 220,
118
119	.auto_corr_max_ofdm = 120,
120	.auto_corr_max_ofdm_mrc = 210,
121	/* max = min for performance bug in 5150 DSP */
122	.auto_corr_max_ofdm_x1 = 105,
123	.auto_corr_max_ofdm_mrc_x1 = 220,
124
125	.auto_corr_min_cck = 125,
126	.auto_corr_max_cck = 200,
127	.auto_corr_min_cck_mrc = 170,
128	.auto_corr_max_cck_mrc = 400,
129	.nrg_th_cck = 95,
130	.nrg_th_ofdm = 95,
131
132	.barker_corr_th_min = 190,
133	.barker_corr_th_min_mrc = 390,
134	.nrg_th_cca = 62,
135};
136
137static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
138{
139	const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
140	s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
141			iwl_temp_calib_to_offset(priv);
142
143	priv->hw_params.ct_kill_threshold = threshold * volt2temp_coef;
144}
145
146static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
147{
148	/* want Celsius */
149	priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
150}
151
152static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
153{
154	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
155	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
156		priv->cfg->base_params->num_of_queues =
157			iwlagn_mod_params.num_of_queues;
158
159	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
160	priv->hw_params.scd_bc_tbls_size =
161			priv->cfg->base_params->num_of_queues *
162			sizeof(struct iwlagn_scd_bc_tbl);
163	priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
164	priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
165	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
166
167	priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
168	priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
169
170	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
171					BIT(IEEE80211_BAND_5GHZ);
172
173	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
174	priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
175	priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
176	priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
177
178	iwl5000_set_ct_threshold(priv);
179
180	/* Set initial sensitivity parameters */
181	/* Set initial calibration set */
182	priv->hw_params.sens = &iwl5000_sensitivity;
183	priv->hw_params.calib_init_cfg =
184		BIT(IWL_CALIB_XTAL)		|
185		BIT(IWL_CALIB_LO)		|
186		BIT(IWL_CALIB_TX_IQ)		|
187		BIT(IWL_CALIB_TX_IQ_PERD)	|
188		BIT(IWL_CALIB_BASE_BAND);
189
190	priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
191
192	return 0;
193}
194
195static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
196{
197	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
198	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
199		priv->cfg->base_params->num_of_queues =
200			iwlagn_mod_params.num_of_queues;
201
202	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
203	priv->hw_params.scd_bc_tbls_size =
204			priv->cfg->base_params->num_of_queues *
205			sizeof(struct iwlagn_scd_bc_tbl);
206	priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
207	priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
208	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
209
210	priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
211	priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
212
213	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
214					BIT(IEEE80211_BAND_5GHZ);
215
216	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
217	priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
218	priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
219	priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
220
221	iwl5150_set_ct_threshold(priv);
222
223	/* Set initial sensitivity parameters */
224	/* Set initial calibration set */
225	priv->hw_params.sens = &iwl5150_sensitivity;
226	priv->hw_params.calib_init_cfg =
227		BIT(IWL_CALIB_LO)		|
228		BIT(IWL_CALIB_TX_IQ)		|
229		BIT(IWL_CALIB_BASE_BAND);
230	if (priv->cfg->need_dc_calib)
231		priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_DC);
232
233	priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
234
235	return 0;
236}
237
238static void iwl5150_temperature(struct iwl_priv *priv)
239{
240	u32 vt = 0;
241	s32 offset =  iwl_temp_calib_to_offset(priv);
242
243	vt = le32_to_cpu(priv->statistics.common.temperature);
244	vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
245	/* now vt hold the temperature in Kelvin */
246	priv->temperature = KELVIN_TO_CELSIUS(vt);
247	iwl_tt_handler(priv);
248}
249
250static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
251				     struct ieee80211_channel_switch *ch_switch)
252{
253	/*
254	 * MULTI-FIXME
255	 * See iwl_mac_channel_switch.
256	 */
257	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
258	struct iwl5000_channel_switch_cmd cmd;
259	const struct iwl_channel_info *ch_info;
260	u32 switch_time_in_usec, ucode_switch_time;
261	u16 ch;
262	u32 tsf_low;
263	u8 switch_count;
264	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
265	struct ieee80211_vif *vif = ctx->vif;
266	struct iwl_host_cmd hcmd = {
267		.id = REPLY_CHANNEL_SWITCH,
268		.len = { sizeof(cmd), },
269		.flags = CMD_SYNC,
270		.data = { &cmd, },
271	};
272
273	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
274	ch = ch_switch->channel->hw_value;
275	IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
276		      ctx->active.channel, ch);
277	cmd.channel = cpu_to_le16(ch);
278	cmd.rxon_flags = ctx->staging.flags;
279	cmd.rxon_filter_flags = ctx->staging.filter_flags;
280	switch_count = ch_switch->count;
281	tsf_low = ch_switch->timestamp & 0x0ffffffff;
282	/*
283	 * calculate the ucode channel switch time
284	 * adding TSF as one of the factor for when to switch
285	 */
286	if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
287		if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
288		    beacon_interval)) {
289			switch_count -= (priv->ucode_beacon_time -
290				tsf_low) / beacon_interval;
291		} else
292			switch_count = 0;
293	}
294	if (switch_count <= 1)
295		cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
296	else {
297		switch_time_in_usec =
298			vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
299		ucode_switch_time = iwl_usecs_to_beacons(priv,
300							 switch_time_in_usec,
301							 beacon_interval);
302		cmd.switch_time = iwl_add_beacon_time(priv,
303						      priv->ucode_beacon_time,
304						      ucode_switch_time,
305						      beacon_interval);
306	}
307	IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
308		      cmd.switch_time);
309	ch_info = iwl_get_channel_info(priv, priv->band, ch);
310	if (ch_info)
311		cmd.expect_beacon = is_channel_radar(ch_info);
312	else {
313		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
314			ctx->active.channel, ch);
315		return -EFAULT;
316	}
317
318	return trans_send_cmd(priv, &hcmd);
319}
320
321static struct iwl_lib_ops iwl5000_lib = {
322	.set_hw_params = iwl5000_hw_set_hw_params,
323	.rx_handler_setup = iwlagn_rx_handler_setup,
324	.setup_deferred_work = iwlagn_setup_deferred_work,
325	.is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
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	.set_channel_switch = iwl5000_hw_channel_switch,
354	.apm_ops = {
355		.init = iwl_apm_init,
356		.config = iwl5000_nic_config,
357	},
358	.eeprom_ops = {
359		.regulatory_bands = {
360			EEPROM_REG_BAND_1_CHANNELS,
361			EEPROM_REG_BAND_2_CHANNELS,
362			EEPROM_REG_BAND_3_CHANNELS,
363			EEPROM_REG_BAND_4_CHANNELS,
364			EEPROM_REG_BAND_5_CHANNELS,
365			EEPROM_REG_BAND_24_HT40_CHANNELS,
366			EEPROM_REG_BAND_52_HT40_CHANNELS
367		},
368		.query_addr = iwlagn_eeprom_query_addr,
369	},
370	.temp_ops = {
371		.temperature = iwl5150_temperature,
372	 },
373};
374
375static const struct iwl_ops iwl5000_ops = {
376	.lib = &iwl5000_lib,
377	.utils = &iwlagn_hcmd_utils,
378};
379
380static const struct iwl_ops iwl5150_ops = {
381	.lib = &iwl5150_lib,
382	.utils = &iwlagn_hcmd_utils,
383};
384
385static struct iwl_base_params iwl5000_base_params = {
386	.eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
387	.num_of_queues = IWLAGN_NUM_QUEUES,
388	.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
389	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
390	.led_compensation = 51,
391	.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
392	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
393	.chain_noise_scale = 1000,
394	.wd_timeout = IWL_LONG_WD_TIMEOUT,
395	.max_event_log_size = 512,
396};
397static struct iwl_ht_params iwl5000_ht_params = {
398	.ht_greenfield_support = true,
399};
400
401#define IWL_DEVICE_5000						\
402	.fw_name_pre = IWL5000_FW_PRE,				\
403	.ucode_api_max = IWL5000_UCODE_API_MAX,			\
404	.ucode_api_min = IWL5000_UCODE_API_MIN,			\
405	.eeprom_ver = EEPROM_5000_EEPROM_VERSION,		\
406	.eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,	\
407	.ops = &iwl5000_ops,					\
408	.base_params = &iwl5000_base_params,			\
409	.led_mode = IWL_LED_BLINK
410
411struct iwl_cfg iwl5300_agn_cfg = {
412	.name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
413	IWL_DEVICE_5000,
414	/* at least EEPROM 0x11A has wrong info */
415	.valid_tx_ant = ANT_ABC,	/* .cfg overwrite */
416	.valid_rx_ant = ANT_ABC,	/* .cfg overwrite */
417	.ht_params = &iwl5000_ht_params,
418};
419
420struct iwl_cfg iwl5100_bgn_cfg = {
421	.name = "Intel(R) WiFi Link 5100 BGN",
422	IWL_DEVICE_5000,
423	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
424	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
425	.ht_params = &iwl5000_ht_params,
426};
427
428struct iwl_cfg iwl5100_abg_cfg = {
429	.name = "Intel(R) WiFi Link 5100 ABG",
430	IWL_DEVICE_5000,
431	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
432	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
433};
434
435struct iwl_cfg iwl5100_agn_cfg = {
436	.name = "Intel(R) WiFi Link 5100 AGN",
437	IWL_DEVICE_5000,
438	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
439	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
440	.ht_params = &iwl5000_ht_params,
441};
442
443struct iwl_cfg iwl5350_agn_cfg = {
444	.name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
445	.fw_name_pre = IWL5000_FW_PRE,
446	.ucode_api_max = IWL5000_UCODE_API_MAX,
447	.ucode_api_min = IWL5000_UCODE_API_MIN,
448	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,
449	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
450	.ops = &iwl5000_ops,
451	.base_params = &iwl5000_base_params,
452	.ht_params = &iwl5000_ht_params,
453	.led_mode = IWL_LED_BLINK,
454	.internal_wimax_coex = true,
455};
456
457#define IWL_DEVICE_5150						\
458	.fw_name_pre = IWL5150_FW_PRE,				\
459	.ucode_api_max = IWL5150_UCODE_API_MAX,			\
460	.ucode_api_min = IWL5150_UCODE_API_MIN,			\
461	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,		\
462	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,	\
463	.ops = &iwl5150_ops,					\
464	.base_params = &iwl5000_base_params,			\
465	.need_dc_calib = true,					\
466	.led_mode = IWL_LED_BLINK,				\
467	.internal_wimax_coex = true
468
469struct iwl_cfg iwl5150_agn_cfg = {
470	.name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
471	IWL_DEVICE_5150,
472	.ht_params = &iwl5000_ht_params,
473
474};
475
476struct iwl_cfg iwl5150_abg_cfg = {
477	.name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
478	IWL_DEVICE_5150,
479};
480
481MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
482MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));
483