iwl-5000.c revision 9563fe1696fa0ced8cfa3f935736d4662a81c1c3 
1/******************************************************************************
2 *
3 * Copyright(c) 2007 - 2012 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 <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-agn.h"
44#include "iwl-agn-hw.h"
45#include "iwl-trans.h"
46#include "iwl-shared.h"
47#include "iwl-cfg.h"
48#include "iwl-prph.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	iwl_rf_config(priv);
68
69	/* W/A : NIC is stuck in a reset state after Early PCIe power off
70	 * (PCIe power is lost before PERST# is asserted),
71	 * causing ME FW to lose ownership and not being able to obtain it back.
72	 */
73	iwl_set_bits_mask_prph(trans(priv), APMG_PS_CTRL_REG,
74				APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
75				~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
76}
77
78static const struct iwl_sensitivity_ranges iwl5000_sensitivity = {
79	.min_nrg_cck = 100,
80	.auto_corr_min_ofdm = 90,
81	.auto_corr_min_ofdm_mrc = 170,
82	.auto_corr_min_ofdm_x1 = 105,
83	.auto_corr_min_ofdm_mrc_x1 = 220,
84
85	.auto_corr_max_ofdm = 120,
86	.auto_corr_max_ofdm_mrc = 210,
87	.auto_corr_max_ofdm_x1 = 120,
88	.auto_corr_max_ofdm_mrc_x1 = 240,
89
90	.auto_corr_min_cck = 125,
91	.auto_corr_max_cck = 200,
92	.auto_corr_min_cck_mrc = 200,
93	.auto_corr_max_cck_mrc = 400,
94	.nrg_th_cck = 100,
95	.nrg_th_ofdm = 100,
96
97	.barker_corr_th_min = 190,
98	.barker_corr_th_min_mrc = 390,
99	.nrg_th_cca = 62,
100};
101
102static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
103	.min_nrg_cck = 95,
104	.auto_corr_min_ofdm = 90,
105	.auto_corr_min_ofdm_mrc = 170,
106	.auto_corr_min_ofdm_x1 = 105,
107	.auto_corr_min_ofdm_mrc_x1 = 220,
108
109	.auto_corr_max_ofdm = 120,
110	.auto_corr_max_ofdm_mrc = 210,
111	/* max = min for performance bug in 5150 DSP */
112	.auto_corr_max_ofdm_x1 = 105,
113	.auto_corr_max_ofdm_mrc_x1 = 220,
114
115	.auto_corr_min_cck = 125,
116	.auto_corr_max_cck = 200,
117	.auto_corr_min_cck_mrc = 170,
118	.auto_corr_max_cck_mrc = 400,
119	.nrg_th_cck = 95,
120	.nrg_th_ofdm = 95,
121
122	.barker_corr_th_min = 190,
123	.barker_corr_th_min_mrc = 390,
124	.nrg_th_cca = 62,
125};
126
127#define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF	(-5)
128
129static s32 iwl_temp_calib_to_offset(struct iwl_shared *shrd)
130{
131	u16 temperature, voltage;
132	__le16 *temp_calib = (__le16 *)iwl_eeprom_query_addr(shrd,
133				EEPROM_KELVIN_TEMPERATURE);
134
135	temperature = le16_to_cpu(temp_calib[0]);
136	voltage = le16_to_cpu(temp_calib[1]);
137
138	/* offset = temp - volt / coeff */
139	return (s32)(temperature - voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF);
140}
141
142static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
143{
144	const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
145	s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
146			iwl_temp_calib_to_offset(priv->shrd);
147
148	hw_params(priv).ct_kill_threshold = threshold * volt2temp_coef;
149}
150
151static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
152{
153	/* want Celsius */
154	hw_params(priv).ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
155}
156
157static void iwl5000_hw_set_hw_params(struct iwl_priv *priv)
158{
159	hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues;
160
161	hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
162					BIT(IEEE80211_BAND_5GHZ);
163
164	hw_params(priv).tx_chains_num =
165		num_of_ant(hw_params(priv).valid_tx_ant);
166	hw_params(priv).rx_chains_num =
167		num_of_ant(hw_params(priv).valid_rx_ant);
168
169	iwl5000_set_ct_threshold(priv);
170
171	/* Set initial sensitivity parameters */
172	hw_params(priv).sens = &iwl5000_sensitivity;
173}
174
175static void iwl5150_hw_set_hw_params(struct iwl_priv *priv)
176{
177	hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues;
178
179	hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
180					BIT(IEEE80211_BAND_5GHZ);
181
182	hw_params(priv).tx_chains_num =
183		num_of_ant(hw_params(priv).valid_tx_ant);
184	hw_params(priv).rx_chains_num =
185		num_of_ant(hw_params(priv).valid_rx_ant);
186
187	iwl5150_set_ct_threshold(priv);
188
189	/* Set initial sensitivity parameters */
190	hw_params(priv).sens = &iwl5150_sensitivity;
191}
192
193static void iwl5150_temperature(struct iwl_priv *priv)
194{
195	u32 vt = 0;
196	s32 offset =  iwl_temp_calib_to_offset(priv->shrd);
197
198	vt = le32_to_cpu(priv->statistics.common.temperature);
199	vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
200	/* now vt hold the temperature in Kelvin */
201	priv->temperature = KELVIN_TO_CELSIUS(vt);
202	iwl_tt_handler(priv);
203}
204
205static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
206				     struct ieee80211_channel_switch *ch_switch)
207{
208	/*
209	 * MULTI-FIXME
210	 * See iwlagn_mac_channel_switch.
211	 */
212	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
213	struct iwl5000_channel_switch_cmd cmd;
214	const struct iwl_channel_info *ch_info;
215	u32 switch_time_in_usec, ucode_switch_time;
216	u16 ch;
217	u32 tsf_low;
218	u8 switch_count;
219	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
220	struct ieee80211_vif *vif = ctx->vif;
221	struct iwl_host_cmd hcmd = {
222		.id = REPLY_CHANNEL_SWITCH,
223		.len = { sizeof(cmd), },
224		.flags = CMD_SYNC,
225		.data = { &cmd, },
226	};
227
228	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
229	ch = ch_switch->channel->hw_value;
230	IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
231		      ctx->active.channel, ch);
232	cmd.channel = cpu_to_le16(ch);
233	cmd.rxon_flags = ctx->staging.flags;
234	cmd.rxon_filter_flags = ctx->staging.filter_flags;
235	switch_count = ch_switch->count;
236	tsf_low = ch_switch->timestamp & 0x0ffffffff;
237	/*
238	 * calculate the ucode channel switch time
239	 * adding TSF as one of the factor for when to switch
240	 */
241	if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
242		if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
243		    beacon_interval)) {
244			switch_count -= (priv->ucode_beacon_time -
245				tsf_low) / beacon_interval;
246		} else
247			switch_count = 0;
248	}
249	if (switch_count <= 1)
250		cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
251	else {
252		switch_time_in_usec =
253			vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
254		ucode_switch_time = iwl_usecs_to_beacons(priv,
255							 switch_time_in_usec,
256							 beacon_interval);
257		cmd.switch_time = iwl_add_beacon_time(priv,
258						      priv->ucode_beacon_time,
259						      ucode_switch_time,
260						      beacon_interval);
261	}
262	IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
263		      cmd.switch_time);
264	ch_info = iwl_get_channel_info(priv, priv->band, ch);
265	if (ch_info)
266		cmd.expect_beacon = is_channel_radar(ch_info);
267	else {
268		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
269			ctx->active.channel, ch);
270		return -EFAULT;
271	}
272
273	return iwl_dvm_send_cmd(priv, &hcmd);
274}
275
276static struct iwl_lib_ops iwl5000_lib = {
277	.set_hw_params = iwl5000_hw_set_hw_params,
278	.set_channel_switch = iwl5000_hw_channel_switch,
279	.nic_config = iwl5000_nic_config,
280	.eeprom_ops = {
281		.regulatory_bands = {
282			EEPROM_REG_BAND_1_CHANNELS,
283			EEPROM_REG_BAND_2_CHANNELS,
284			EEPROM_REG_BAND_3_CHANNELS,
285			EEPROM_REG_BAND_4_CHANNELS,
286			EEPROM_REG_BAND_5_CHANNELS,
287			EEPROM_REG_BAND_24_HT40_CHANNELS,
288			EEPROM_REG_BAND_52_HT40_CHANNELS
289		},
290	},
291	.temperature = iwlagn_temperature,
292};
293
294static struct iwl_lib_ops iwl5150_lib = {
295	.set_hw_params = iwl5150_hw_set_hw_params,
296	.set_channel_switch = iwl5000_hw_channel_switch,
297	.nic_config = iwl5000_nic_config,
298	.eeprom_ops = {
299		.regulatory_bands = {
300			EEPROM_REG_BAND_1_CHANNELS,
301			EEPROM_REG_BAND_2_CHANNELS,
302			EEPROM_REG_BAND_3_CHANNELS,
303			EEPROM_REG_BAND_4_CHANNELS,
304			EEPROM_REG_BAND_5_CHANNELS,
305			EEPROM_REG_BAND_24_HT40_CHANNELS,
306			EEPROM_REG_BAND_52_HT40_CHANNELS
307		},
308	},
309	.temperature = iwl5150_temperature,
310};
311
312static const struct iwl_base_params iwl5000_base_params = {
313	.eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
314	.num_of_queues = IWLAGN_NUM_QUEUES,
315	.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
316	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
317	.led_compensation = 51,
318	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
319	.chain_noise_scale = 1000,
320	.wd_timeout = IWL_LONG_WD_TIMEOUT,
321	.max_event_log_size = 512,
322	.no_idle_support = true,
323	.wd_disable = true,
324};
325
326static const struct iwl_ht_params iwl5000_ht_params = {
327	.ht_greenfield_support = true,
328};
329
330#define IWL_DEVICE_5000						\
331	.fw_name_pre = IWL5000_FW_PRE,				\
332	.ucode_api_max = IWL5000_UCODE_API_MAX,			\
333	.ucode_api_min = IWL5000_UCODE_API_MIN,			\
334	.max_inst_size = IWLAGN_RTC_INST_SIZE,			\
335	.max_data_size = IWLAGN_RTC_DATA_SIZE,			\
336	.eeprom_ver = EEPROM_5000_EEPROM_VERSION,		\
337	.eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,	\
338	.lib = &iwl5000_lib,					\
339	.base_params = &iwl5000_base_params,			\
340	.led_mode = IWL_LED_BLINK
341
342const struct iwl_cfg iwl5300_agn_cfg = {
343	.name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
344	IWL_DEVICE_5000,
345	/* at least EEPROM 0x11A has wrong info */
346	.valid_tx_ant = ANT_ABC,	/* .cfg overwrite */
347	.valid_rx_ant = ANT_ABC,	/* .cfg overwrite */
348	.ht_params = &iwl5000_ht_params,
349};
350
351const struct iwl_cfg iwl5100_bgn_cfg = {
352	.name = "Intel(R) WiFi Link 5100 BGN",
353	IWL_DEVICE_5000,
354	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
355	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
356	.ht_params = &iwl5000_ht_params,
357};
358
359const struct iwl_cfg iwl5100_abg_cfg = {
360	.name = "Intel(R) WiFi Link 5100 ABG",
361	IWL_DEVICE_5000,
362	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
363	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
364};
365
366const struct iwl_cfg iwl5100_agn_cfg = {
367	.name = "Intel(R) WiFi Link 5100 AGN",
368	IWL_DEVICE_5000,
369	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
370	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
371	.ht_params = &iwl5000_ht_params,
372};
373
374const struct iwl_cfg iwl5350_agn_cfg = {
375	.name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
376	.fw_name_pre = IWL5000_FW_PRE,
377	.ucode_api_max = IWL5000_UCODE_API_MAX,
378	.ucode_api_min = IWL5000_UCODE_API_MIN,
379	.max_inst_size = IWLAGN_RTC_INST_SIZE,
380	.max_data_size = IWLAGN_RTC_DATA_SIZE,
381	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,
382	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
383	.lib = &iwl5000_lib,
384	.base_params = &iwl5000_base_params,
385	.ht_params = &iwl5000_ht_params,
386	.led_mode = IWL_LED_BLINK,
387	.internal_wimax_coex = true,
388};
389
390#define IWL_DEVICE_5150						\
391	.fw_name_pre = IWL5150_FW_PRE,				\
392	.ucode_api_max = IWL5150_UCODE_API_MAX,			\
393	.ucode_api_min = IWL5150_UCODE_API_MIN,			\
394	.max_inst_size = IWLAGN_RTC_INST_SIZE,			\
395	.max_data_size = IWLAGN_RTC_DATA_SIZE,			\
396	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,		\
397	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,	\
398	.lib = &iwl5150_lib,					\
399	.base_params = &iwl5000_base_params,			\
400	.no_xtal_calib = true,					\
401	.led_mode = IWL_LED_BLINK,				\
402	.internal_wimax_coex = true
403
404const struct iwl_cfg iwl5150_agn_cfg = {
405	.name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
406	IWL_DEVICE_5150,
407	.ht_params = &iwl5000_ht_params,
408
409};
410
411const struct iwl_cfg iwl5150_abg_cfg = {
412	.name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
413	IWL_DEVICE_5150,
414};
415
416MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
417MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));
418