iwl-5000.c revision 86cb3b4e08a106594ee79c94dec9c7ca289cf999 
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
39#include "iwl-eeprom.h"
40#include "iwl-dev.h"
41#include "iwl-core.h"
42#include "iwl-io.h"
43#include "iwl-sta.h"
44#include "iwl-helpers.h"
45#include "iwl-agn.h"
46#include "iwl-agn-hw.h"
47#include "iwl-5000-hw.h"
48
49/* Highest firmware API version supported */
50#define IWL5000_UCODE_API_MAX 5
51#define IWL5150_UCODE_API_MAX 2
52
53/* Lowest firmware API version supported */
54#define IWL5000_UCODE_API_MIN 1
55#define IWL5150_UCODE_API_MIN 1
56
57#define IWL5000_FW_PRE "iwlwifi-5000-"
58#define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE #api ".ucode"
59
60#define IWL5150_FW_PRE "iwlwifi-5150-"
61#define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE #api ".ucode"
62
63/* NIC configuration for 5000 series */
64static void iwl5000_nic_config(struct iwl_priv *priv)
65{
66	unsigned long flags;
67
68	iwl_rf_config(priv);
69
70	spin_lock_irqsave(&priv->lock, flags);
71
72	/* W/A : NIC is stuck in a reset state after Early PCIe power off
73	 * (PCIe power is lost before PERST# is asserted),
74	 * causing ME FW to lose ownership and not being able to obtain it back.
75	 */
76	iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
77				APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
78				~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
79
80
81	spin_unlock_irqrestore(&priv->lock, flags);
82}
83
84static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
85	.min_nrg_cck = 95,
86	.max_nrg_cck = 0, /* not used, set to 0 */
87	.auto_corr_min_ofdm = 90,
88	.auto_corr_min_ofdm_mrc = 170,
89	.auto_corr_min_ofdm_x1 = 120,
90	.auto_corr_min_ofdm_mrc_x1 = 240,
91
92	.auto_corr_max_ofdm = 120,
93	.auto_corr_max_ofdm_mrc = 210,
94	.auto_corr_max_ofdm_x1 = 120,
95	.auto_corr_max_ofdm_mrc_x1 = 240,
96
97	.auto_corr_min_cck = 125,
98	.auto_corr_max_cck = 200,
99	.auto_corr_min_cck_mrc = 170,
100	.auto_corr_max_cck_mrc = 400,
101	.nrg_th_cck = 95,
102	.nrg_th_ofdm = 95,
103
104	.barker_corr_th_min = 190,
105	.barker_corr_th_min_mrc = 390,
106	.nrg_th_cca = 62,
107};
108
109static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
110	.min_nrg_cck = 95,
111	.max_nrg_cck = 0, /* not used, set to 0 */
112	.auto_corr_min_ofdm = 90,
113	.auto_corr_min_ofdm_mrc = 170,
114	.auto_corr_min_ofdm_x1 = 105,
115	.auto_corr_min_ofdm_mrc_x1 = 220,
116
117	.auto_corr_max_ofdm = 120,
118	.auto_corr_max_ofdm_mrc = 210,
119	/* max = min for performance bug in 5150 DSP */
120	.auto_corr_max_ofdm_x1 = 105,
121	.auto_corr_max_ofdm_mrc_x1 = 220,
122
123	.auto_corr_min_cck = 125,
124	.auto_corr_max_cck = 200,
125	.auto_corr_min_cck_mrc = 170,
126	.auto_corr_max_cck_mrc = 400,
127	.nrg_th_cck = 95,
128	.nrg_th_ofdm = 95,
129
130	.barker_corr_th_min = 190,
131	.barker_corr_th_min_mrc = 390,
132	.nrg_th_cca = 62,
133};
134
135static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
136{
137	const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
138	s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
139			iwl_temp_calib_to_offset(priv);
140
141	priv->hw_params.ct_kill_threshold = threshold * volt2temp_coef;
142}
143
144static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
145{
146	/* want Celsius */
147	priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
148}
149
150static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
151{
152	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
153	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
154		priv->cfg->base_params->num_of_queues =
155			iwlagn_mod_params.num_of_queues;
156
157	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
158	priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
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	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
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.dma_chnl_num = FH50_TCSR_CHNL_NUM;
204	priv->hw_params.scd_bc_tbls_size =
205			priv->cfg->base_params->num_of_queues *
206			sizeof(struct iwlagn_scd_bc_tbl);
207	priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
208	priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
209	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
210
211	priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
212	priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
213
214	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
215					BIT(IEEE80211_BAND_5GHZ);
216	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
217
218	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
219	priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
220	priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
221	priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
222
223	iwl5150_set_ct_threshold(priv);
224
225	/* Set initial sensitivity parameters */
226	/* Set initial calibration set */
227	priv->hw_params.sens = &iwl5150_sensitivity;
228	priv->hw_params.calib_init_cfg =
229		BIT(IWL_CALIB_LO)		|
230		BIT(IWL_CALIB_TX_IQ)		|
231		BIT(IWL_CALIB_BASE_BAND);
232	if (priv->cfg->need_dc_calib)
233		priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_DC);
234
235	priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
236
237	return 0;
238}
239
240static void iwl5150_temperature(struct iwl_priv *priv)
241{
242	u32 vt = 0;
243	s32 offset =  iwl_temp_calib_to_offset(priv);
244
245	vt = le32_to_cpu(priv->statistics.common.temperature);
246	vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
247	/* now vt hold the temperature in Kelvin */
248	priv->temperature = KELVIN_TO_CELSIUS(vt);
249	iwl_tt_handler(priv);
250}
251
252static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
253				     struct ieee80211_channel_switch *ch_switch)
254{
255	/*
256	 * MULTI-FIXME
257	 * See iwl_mac_channel_switch.
258	 */
259	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
260	struct iwl5000_channel_switch_cmd cmd;
261	const struct iwl_channel_info *ch_info;
262	u32 switch_time_in_usec, ucode_switch_time;
263	u16 ch;
264	u32 tsf_low;
265	u8 switch_count;
266	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
267	struct ieee80211_vif *vif = ctx->vif;
268	struct iwl_host_cmd hcmd = {
269		.id = REPLY_CHANNEL_SWITCH,
270		.len = { sizeof(cmd), },
271		.flags = CMD_SYNC,
272		.data = { &cmd, },
273	};
274
275	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
276	ch = ch_switch->channel->hw_value;
277	IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
278		      ctx->active.channel, ch);
279	cmd.channel = cpu_to_le16(ch);
280	cmd.rxon_flags = ctx->staging.flags;
281	cmd.rxon_filter_flags = ctx->staging.filter_flags;
282	switch_count = ch_switch->count;
283	tsf_low = ch_switch->timestamp & 0x0ffffffff;
284	/*
285	 * calculate the ucode channel switch time
286	 * adding TSF as one of the factor for when to switch
287	 */
288	if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
289		if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
290		    beacon_interval)) {
291			switch_count -= (priv->ucode_beacon_time -
292				tsf_low) / beacon_interval;
293		} else
294			switch_count = 0;
295	}
296	if (switch_count <= 1)
297		cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
298	else {
299		switch_time_in_usec =
300			vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
301		ucode_switch_time = iwl_usecs_to_beacons(priv,
302							 switch_time_in_usec,
303							 beacon_interval);
304		cmd.switch_time = iwl_add_beacon_time(priv,
305						      priv->ucode_beacon_time,
306						      ucode_switch_time,
307						      beacon_interval);
308	}
309	IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
310		      cmd.switch_time);
311	ch_info = iwl_get_channel_info(priv, priv->band, ch);
312	if (ch_info)
313		cmd.expect_beacon = is_channel_radar(ch_info);
314	else {
315		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
316			ctx->active.channel, ch);
317		return -EFAULT;
318	}
319
320	return iwl_send_cmd_sync(priv, &hcmd);
321}
322
323static struct iwl_lib_ops iwl5000_lib = {
324	.set_hw_params = iwl5000_hw_set_hw_params,
325	.rx_handler_setup = iwlagn_rx_handler_setup,
326	.setup_deferred_work = iwlagn_setup_deferred_work,
327	.is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
328	.update_chain_flags = iwl_update_chain_flags,
329	.set_channel_switch = iwl5000_hw_channel_switch,
330	.apm_ops = {
331		.init = iwl_apm_init,
332		.config = iwl5000_nic_config,
333	},
334	.eeprom_ops = {
335		.regulatory_bands = {
336			EEPROM_REG_BAND_1_CHANNELS,
337			EEPROM_REG_BAND_2_CHANNELS,
338			EEPROM_REG_BAND_3_CHANNELS,
339			EEPROM_REG_BAND_4_CHANNELS,
340			EEPROM_REG_BAND_5_CHANNELS,
341			EEPROM_REG_BAND_24_HT40_CHANNELS,
342			EEPROM_REG_BAND_52_HT40_CHANNELS
343		},
344		.query_addr = iwlagn_eeprom_query_addr,
345	},
346	.temp_ops = {
347		.temperature = iwlagn_temperature,
348	 },
349};
350
351static struct iwl_lib_ops iwl5150_lib = {
352	.set_hw_params = iwl5150_hw_set_hw_params,
353	.rx_handler_setup = iwlagn_rx_handler_setup,
354	.setup_deferred_work = iwlagn_setup_deferred_work,
355	.is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
356	.update_chain_flags = iwl_update_chain_flags,
357	.set_channel_switch = iwl5000_hw_channel_switch,
358	.apm_ops = {
359		.init = iwl_apm_init,
360		.config = iwl5000_nic_config,
361	},
362	.eeprom_ops = {
363		.regulatory_bands = {
364			EEPROM_REG_BAND_1_CHANNELS,
365			EEPROM_REG_BAND_2_CHANNELS,
366			EEPROM_REG_BAND_3_CHANNELS,
367			EEPROM_REG_BAND_4_CHANNELS,
368			EEPROM_REG_BAND_5_CHANNELS,
369			EEPROM_REG_BAND_24_HT40_CHANNELS,
370			EEPROM_REG_BAND_52_HT40_CHANNELS
371		},
372		.query_addr = iwlagn_eeprom_query_addr,
373	},
374	.temp_ops = {
375		.temperature = iwl5150_temperature,
376	 },
377};
378
379static const struct iwl_ops iwl5000_ops = {
380	.lib = &iwl5000_lib,
381	.hcmd = &iwlagn_hcmd,
382	.utils = &iwlagn_hcmd_utils,
383};
384
385static const struct iwl_ops iwl5150_ops = {
386	.lib = &iwl5150_lib,
387	.hcmd = &iwlagn_hcmd,
388	.utils = &iwlagn_hcmd_utils,
389};
390
391static struct iwl_base_params iwl5000_base_params = {
392	.eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
393	.num_of_queues = IWLAGN_NUM_QUEUES,
394	.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
395	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
396	.led_compensation = 51,
397	.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
398	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
399	.chain_noise_scale = 1000,
400	.wd_timeout = IWL_LONG_WD_TIMEOUT,
401	.max_event_log_size = 512,
402};
403static struct iwl_ht_params iwl5000_ht_params = {
404	.ht_greenfield_support = true,
405};
406
407#define IWL_DEVICE_5000						\
408	.fw_name_pre = IWL5000_FW_PRE,				\
409	.ucode_api_max = IWL5000_UCODE_API_MAX,			\
410	.ucode_api_min = IWL5000_UCODE_API_MIN,			\
411	.eeprom_ver = EEPROM_5000_EEPROM_VERSION,		\
412	.eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,	\
413	.ops = &iwl5000_ops,					\
414	.base_params = &iwl5000_base_params,			\
415	.led_mode = IWL_LED_BLINK
416
417struct iwl_cfg iwl5300_agn_cfg = {
418	.name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
419	IWL_DEVICE_5000,
420	/* at least EEPROM 0x11A has wrong info */
421	.valid_tx_ant = ANT_ABC,	/* .cfg overwrite */
422	.valid_rx_ant = ANT_ABC,	/* .cfg overwrite */
423	.ht_params = &iwl5000_ht_params,
424};
425
426struct iwl_cfg iwl5100_bgn_cfg = {
427	.name = "Intel(R) WiFi Link 5100 BGN",
428	IWL_DEVICE_5000,
429	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
430	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
431	.ht_params = &iwl5000_ht_params,
432};
433
434struct iwl_cfg iwl5100_abg_cfg = {
435	.name = "Intel(R) WiFi Link 5100 ABG",
436	IWL_DEVICE_5000,
437	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
438	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
439};
440
441struct iwl_cfg iwl5100_agn_cfg = {
442	.name = "Intel(R) WiFi Link 5100 AGN",
443	IWL_DEVICE_5000,
444	.valid_tx_ant = ANT_B,		/* .cfg overwrite */
445	.valid_rx_ant = ANT_AB,		/* .cfg overwrite */
446	.ht_params = &iwl5000_ht_params,
447};
448
449struct iwl_cfg iwl5350_agn_cfg = {
450	.name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
451	.fw_name_pre = IWL5000_FW_PRE,
452	.ucode_api_max = IWL5000_UCODE_API_MAX,
453	.ucode_api_min = IWL5000_UCODE_API_MIN,
454	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,
455	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
456	.ops = &iwl5000_ops,
457	.base_params = &iwl5000_base_params,
458	.ht_params = &iwl5000_ht_params,
459	.led_mode = IWL_LED_BLINK,
460	.internal_wimax_coex = true,
461};
462
463#define IWL_DEVICE_5150						\
464	.fw_name_pre = IWL5150_FW_PRE,				\
465	.ucode_api_max = IWL5150_UCODE_API_MAX,			\
466	.ucode_api_min = IWL5150_UCODE_API_MIN,			\
467	.eeprom_ver = EEPROM_5050_EEPROM_VERSION,		\
468	.eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,	\
469	.ops = &iwl5150_ops,					\
470	.base_params = &iwl5000_base_params,			\
471	.need_dc_calib = true,					\
472	.led_mode = IWL_LED_BLINK,				\
473	.internal_wimax_coex = true
474
475struct iwl_cfg iwl5150_agn_cfg = {
476	.name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
477	IWL_DEVICE_5150,
478	.ht_params = &iwl5000_ht_params,
479
480};
481
482struct iwl_cfg iwl5150_abg_cfg = {
483	.name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
484	IWL_DEVICE_5150,
485};
486
487MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
488MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));
489