iwl-5000.c revision 9eae88fa9a02e31af69a215beaa5e1194da3a5a1 
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).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
160					BIT(IEEE80211_BAND_5GHZ);
161
162	hw_params(priv).tx_chains_num =
163		num_of_ant(hw_params(priv).valid_tx_ant);
164	hw_params(priv).rx_chains_num =
165		num_of_ant(hw_params(priv).valid_rx_ant);
166
167	iwl5000_set_ct_threshold(priv);
168
169	/* Set initial sensitivity parameters */
170	hw_params(priv).sens = &iwl5000_sensitivity;
171}
172
173static void iwl5150_hw_set_hw_params(struct iwl_priv *priv)
174{
175	hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
176					BIT(IEEE80211_BAND_5GHZ);
177
178	hw_params(priv).tx_chains_num =
179		num_of_ant(hw_params(priv).valid_tx_ant);
180	hw_params(priv).rx_chains_num =
181		num_of_ant(hw_params(priv).valid_rx_ant);
182
183	iwl5150_set_ct_threshold(priv);
184
185	/* Set initial sensitivity parameters */
186	hw_params(priv).sens = &iwl5150_sensitivity;
187}
188
189static void iwl5150_temperature(struct iwl_priv *priv)
190{
191	u32 vt = 0;
192	s32 offset =  iwl_temp_calib_to_offset(priv->shrd);
193
194	vt = le32_to_cpu(priv->statistics.common.temperature);
195	vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
196	/* now vt hold the temperature in Kelvin */
197	priv->temperature = KELVIN_TO_CELSIUS(vt);
198	iwl_tt_handler(priv);
199}
200
201static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
202				     struct ieee80211_channel_switch *ch_switch)
203{
204	/*
205	 * MULTI-FIXME
206	 * See iwlagn_mac_channel_switch.
207	 */
208	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
209	struct iwl5000_channel_switch_cmd cmd;
210	const struct iwl_channel_info *ch_info;
211	u32 switch_time_in_usec, ucode_switch_time;
212	u16 ch;
213	u32 tsf_low;
214	u8 switch_count;
215	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
216	struct ieee80211_vif *vif = ctx->vif;
217	struct iwl_host_cmd hcmd = {
218		.id = REPLY_CHANNEL_SWITCH,
219		.len = { sizeof(cmd), },
220		.flags = CMD_SYNC,
221		.data = { &cmd, },
222	};
223
224	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
225	ch = ch_switch->channel->hw_value;
226	IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
227		      ctx->active.channel, ch);
228	cmd.channel = cpu_to_le16(ch);
229	cmd.rxon_flags = ctx->staging.flags;
230	cmd.rxon_filter_flags = ctx->staging.filter_flags;
231	switch_count = ch_switch->count;
232	tsf_low = ch_switch->timestamp & 0x0ffffffff;
233	/*
234	 * calculate the ucode channel switch time
235	 * adding TSF as one of the factor for when to switch
236	 */
237	if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
238		if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
239		    beacon_interval)) {
240			switch_count -= (priv->ucode_beacon_time -
241				tsf_low) / beacon_interval;
242		} else
243			switch_count = 0;
244	}
245	if (switch_count <= 1)
246		cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
247	else {
248		switch_time_in_usec =
249			vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
250		ucode_switch_time = iwl_usecs_to_beacons(priv,
251							 switch_time_in_usec,
252							 beacon_interval);
253		cmd.switch_time = iwl_add_beacon_time(priv,
254						      priv->ucode_beacon_time,
255						      ucode_switch_time,
256						      beacon_interval);
257	}
258	IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
259		      cmd.switch_time);
260	ch_info = iwl_get_channel_info(priv, priv->band, ch);
261	if (ch_info)
262		cmd.expect_beacon = is_channel_radar(ch_info);
263	else {
264		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
265			ctx->active.channel, ch);
266		return -EFAULT;
267	}
268
269	return iwl_dvm_send_cmd(priv, &hcmd);
270}
271
272static struct iwl_lib_ops iwl5000_lib = {
273	.set_hw_params = iwl5000_hw_set_hw_params,
274	.set_channel_switch = iwl5000_hw_channel_switch,
275	.nic_config = iwl5000_nic_config,
276	.eeprom_ops = {
277		.regulatory_bands = {
278			EEPROM_REG_BAND_1_CHANNELS,
279			EEPROM_REG_BAND_2_CHANNELS,
280			EEPROM_REG_BAND_3_CHANNELS,
281			EEPROM_REG_BAND_4_CHANNELS,
282			EEPROM_REG_BAND_5_CHANNELS,
283			EEPROM_REG_BAND_24_HT40_CHANNELS,
284			EEPROM_REG_BAND_52_HT40_CHANNELS
285		},
286	},
287	.temperature = iwlagn_temperature,
288};
289
290static struct iwl_lib_ops iwl5150_lib = {
291	.set_hw_params = iwl5150_hw_set_hw_params,
292	.set_channel_switch = iwl5000_hw_channel_switch,
293	.nic_config = iwl5000_nic_config,
294	.eeprom_ops = {
295		.regulatory_bands = {
296			EEPROM_REG_BAND_1_CHANNELS,
297			EEPROM_REG_BAND_2_CHANNELS,
298			EEPROM_REG_BAND_3_CHANNELS,
299			EEPROM_REG_BAND_4_CHANNELS,
300			EEPROM_REG_BAND_5_CHANNELS,
301			EEPROM_REG_BAND_24_HT40_CHANNELS,
302			EEPROM_REG_BAND_52_HT40_CHANNELS
303		},
304	},
305	.temperature = iwl5150_temperature,
306};
307
308static const struct iwl_base_params iwl5000_base_params = {
309	.eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
310	.num_of_queues = IWLAGN_NUM_QUEUES,
311	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
312	.led_compensation = 51,
313	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
314	.chain_noise_scale = 1000,
315	.wd_timeout = IWL_LONG_WD_TIMEOUT,
316	.max_event_log_size = 512,
317	.no_idle_support = true,
318	.wd_disable = true,
319};
320
321static const struct iwl_ht_params iwl5000_ht_params = {
322	.ht_greenfield_support = true,
323};
324
325#define IWL_DEVICE_5000						\
326	.fw_name_pre = IWL5000_FW_PRE,				\
327	.ucode_api_max = IWL5000_UCODE_API_MAX,			\
328	.ucode_api_min = IWL5000_UCODE_API_MIN,			\
329	.max_inst_size = IWLAGN_RTC_INST_SIZE,			\
330	.max_data_size = IWLAGN_RTC_DATA_SIZE,			\
331	.eeprom_ver = EEPROM_5000_EEPROM_VERSION,		\
332	.eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,	\
333	.lib = &iwl5000_lib,					\
334	.base_params = &iwl5000_base_params,			\
335	.led_mode = IWL_LED_BLINK
336
337const struct iwl_cfg iwl5300_agn_cfg = {
338	.name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
339	IWL_DEVICE_5000,
340	/* at least EEPROM 0x11A has wrong info */
341	.valid_tx_ant = ANT_ABC,	/* .cfg overwrite */
342	.valid_rx_ant = ANT_ABC,	/* .cfg overwrite */
343	.ht_params = &iwl5000_ht_params,
344};
345
346const struct iwl_cfg iwl5100_bgn_cfg = {
347	.name = "Intel(R) WiFi Link 5100 BGN",
348	IWL_DEVICE_5000,
349	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
350	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
351	.ht_params = &iwl5000_ht_params,
352};
353
354const struct iwl_cfg iwl5100_abg_cfg = {
355	.name = "Intel(R) WiFi Link 5100 ABG",
356	IWL_DEVICE_5000,
357	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
358	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
359};
360
361const struct iwl_cfg iwl5100_agn_cfg = {
362	.name = "Intel(R) WiFi Link 5100 AGN",
363	IWL_DEVICE_5000,
364	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
365	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
366	.ht_params = &iwl5000_ht_params,
367};
368
369const struct iwl_cfg iwl5350_agn_cfg = {
370	.name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
371	.fw_name_pre = IWL5000_FW_PRE,
372	.ucode_api_max = IWL5000_UCODE_API_MAX,
373	.ucode_api_min = IWL5000_UCODE_API_MIN,
374	.max_inst_size = IWLAGN_RTC_INST_SIZE,
375	.max_data_size = IWLAGN_RTC_DATA_SIZE,
376	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,
377	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
378	.lib = &iwl5000_lib,
379	.base_params = &iwl5000_base_params,
380	.ht_params = &iwl5000_ht_params,
381	.led_mode = IWL_LED_BLINK,
382	.internal_wimax_coex = true,
383};
384
385#define IWL_DEVICE_5150						\
386	.fw_name_pre = IWL5150_FW_PRE,				\
387	.ucode_api_max = IWL5150_UCODE_API_MAX,			\
388	.ucode_api_min = IWL5150_UCODE_API_MIN,			\
389	.max_inst_size = IWLAGN_RTC_INST_SIZE,			\
390	.max_data_size = IWLAGN_RTC_DATA_SIZE,			\
391	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,		\
392	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,	\
393	.lib = &iwl5150_lib,					\
394	.base_params = &iwl5000_base_params,			\
395	.no_xtal_calib = true,					\
396	.led_mode = IWL_LED_BLINK,				\
397	.internal_wimax_coex = true
398
399const struct iwl_cfg iwl5150_agn_cfg = {
400	.name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
401	IWL_DEVICE_5150,
402	.ht_params = &iwl5000_ht_params,
403
404};
405
406const struct iwl_cfg iwl5150_abg_cfg = {
407	.name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
408	IWL_DEVICE_5150,
409};
410
411MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
412MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));
413