iwl-2000.c revision 3fa507386dc4cdf731344cb9361e9cca373cedb9 
1/******************************************************************************
2 *
3 * Copyright(c) 2008 - 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/pci.h>
31#include <linux/dma-mapping.h>
32#include <linux/delay.h>
33#include <linux/skbuff.h>
34#include <linux/netdevice.h>
35#include <linux/wireless.h>
36#include <net/mac80211.h>
37#include <linux/etherdevice.h>
38#include <asm/unaligned.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-agn.h"
46#include "iwl-helpers.h"
47#include "iwl-agn-hw.h"
48#include "iwl-6000-hw.h"
49
50/* Highest firmware API version supported */
51#define IWL2030_UCODE_API_MAX 5
52#define IWL2000_UCODE_API_MAX 5
53#define IWL105_UCODE_API_MAX 5
54
55/* Lowest firmware API version supported */
56#define IWL2030_UCODE_API_MIN 5
57#define IWL2000_UCODE_API_MIN 5
58#define IWL105_UCODE_API_MIN 5
59
60#define IWL2030_FW_PRE "iwlwifi-2030-"
61#define IWL2030_MODULE_FIRMWARE(api) IWL2030_FW_PRE #api ".ucode"
62
63#define IWL2000_FW_PRE "iwlwifi-2000-"
64#define IWL2000_MODULE_FIRMWARE(api) IWL2000_FW_PRE #api ".ucode"
65
66#define IWL105_FW_PRE "iwlwifi-105-"
67#define IWL105_MODULE_FIRMWARE(api) IWL105_FW_PRE #api ".ucode"
68
69static void iwl2000_set_ct_threshold(struct iwl_priv *priv)
70{
71	/* want Celsius */
72	priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD;
73	priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
74}
75
76/* NIC configuration for 2000 series */
77static void iwl2000_nic_config(struct iwl_priv *priv)
78{
79	u16 radio_cfg;
80
81	radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
82
83	/* write radio config values to register */
84	if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX)
85	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
86			EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
87			EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
88			EEPROM_RF_CFG_DASH_MSK(radio_cfg));
89
90	/* set CSR_HW_CONFIG_REG for uCode use */
91	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
92		    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
93		    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
94
95	if (priv->cfg->iq_invert)
96		iwl_set_bit(priv, CSR_GP_DRIVER_REG,
97			    CSR_GP_DRIVER_REG_BIT_RADIO_IQ_INVER);
98
99	if (priv->cfg->disable_otp_refresh)
100		iwl_write_prph(priv, APMG_ANALOG_SVR_REG, 0x80000010);
101}
102
103static struct iwl_sensitivity_ranges iwl2000_sensitivity = {
104	.min_nrg_cck = 97,
105	.max_nrg_cck = 0, /* not used, set to 0 */
106	.auto_corr_min_ofdm = 80,
107	.auto_corr_min_ofdm_mrc = 128,
108	.auto_corr_min_ofdm_x1 = 105,
109	.auto_corr_min_ofdm_mrc_x1 = 192,
110
111	.auto_corr_max_ofdm = 145,
112	.auto_corr_max_ofdm_mrc = 232,
113	.auto_corr_max_ofdm_x1 = 110,
114	.auto_corr_max_ofdm_mrc_x1 = 232,
115
116	.auto_corr_min_cck = 125,
117	.auto_corr_max_cck = 175,
118	.auto_corr_min_cck_mrc = 160,
119	.auto_corr_max_cck_mrc = 310,
120	.nrg_th_cck = 97,
121	.nrg_th_ofdm = 100,
122
123	.barker_corr_th_min = 190,
124	.barker_corr_th_min_mrc = 390,
125	.nrg_th_cca = 62,
126};
127
128static int iwl2000_hw_set_hw_params(struct iwl_priv *priv)
129{
130	if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
131	    iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
132		priv->cfg->base_params->num_of_queues =
133			iwlagn_mod_params.num_of_queues;
134
135	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
136	priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
137	priv->hw_params.scd_bc_tbls_size =
138		priv->cfg->base_params->num_of_queues *
139		sizeof(struct iwlagn_scd_bc_tbl);
140	priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
141	priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
142	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
143
144	priv->hw_params.max_data_size = IWL60_RTC_DATA_SIZE;
145	priv->hw_params.max_inst_size = IWL60_RTC_INST_SIZE;
146
147	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
148					BIT(IEEE80211_BAND_5GHZ);
149	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
150
151	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
152	if (priv->cfg->rx_with_siso_diversity)
153		priv->hw_params.rx_chains_num = 1;
154	else
155		priv->hw_params.rx_chains_num =
156			num_of_ant(priv->cfg->valid_rx_ant);
157	priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
158	priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
159
160	iwl2000_set_ct_threshold(priv);
161
162	/* Set initial sensitivity parameters */
163	/* Set initial calibration set */
164	priv->hw_params.sens = &iwl2000_sensitivity;
165	priv->hw_params.calib_init_cfg =
166		BIT(IWL_CALIB_XTAL)             |
167		BIT(IWL_CALIB_LO)               |
168		BIT(IWL_CALIB_TX_IQ)            |
169		BIT(IWL_CALIB_BASE_BAND);
170	if (priv->cfg->need_dc_calib)
171		priv->hw_params.calib_rt_cfg |= BIT(IWL_CALIB_CFG_DC_IDX);
172	if (priv->cfg->need_temp_offset_calib)
173		priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_TEMP_OFFSET);
174
175	priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
176
177	return 0;
178}
179
180static int iwl2030_hw_channel_switch(struct iwl_priv *priv,
181                                    struct ieee80211_channel_switch *ch_switch)
182{
183	/*
184	 * MULTI-FIXME
185	 * See iwl_mac_channel_switch.
186	 */
187	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
188	struct iwl6000_channel_switch_cmd cmd;
189	const struct iwl_channel_info *ch_info;
190	u32 switch_time_in_usec, ucode_switch_time;
191	u16 ch;
192	u32 tsf_low;
193	u8 switch_count;
194	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
195	struct ieee80211_vif *vif = ctx->vif;
196	struct iwl_host_cmd hcmd = {
197		.id = REPLY_CHANNEL_SWITCH,
198		.len = { sizeof(cmd), },
199		.flags = CMD_SYNC,
200		.data = { &cmd, },
201	};
202
203	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
204	ch = ch_switch->channel->hw_value;
205	IWL_DEBUG_11H(priv, "channel switch from %u to %u\n",
206		ctx->active.channel, ch);
207	cmd.channel = cpu_to_le16(ch);
208	cmd.rxon_flags = ctx->staging.flags;
209	cmd.rxon_filter_flags = ctx->staging.filter_flags;
210	switch_count = ch_switch->count;
211	tsf_low = ch_switch->timestamp & 0x0ffffffff;
212	/*
213	 * calculate the ucode channel switch time
214	 * adding TSF as one of the factor for when to switch
215	 */
216	if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
217		if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
218		    beacon_interval)) {
219			switch_count -= (priv->ucode_beacon_time -
220				tsf_low) / beacon_interval;
221		} else
222			switch_count = 0;
223	}
224	if (switch_count <= 1)
225		cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
226	else {
227		switch_time_in_usec =
228			vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
229		ucode_switch_time = iwl_usecs_to_beacons(priv,
230						switch_time_in_usec,
231						beacon_interval);
232		cmd.switch_time = iwl_add_beacon_time(priv,
233						priv->ucode_beacon_time,
234						ucode_switch_time,
235						beacon_interval);
236	}
237	IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
238		      cmd.switch_time);
239	ch_info = iwl_get_channel_info(priv, priv->band, ch);
240	if (ch_info)
241		cmd.expect_beacon = is_channel_radar(ch_info);
242	else {
243		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
244			ctx->active.channel, ch);
245		return -EFAULT;
246	}
247	priv->switch_rxon.channel = cmd.channel;
248	priv->switch_rxon.switch_in_progress = true;
249
250	return iwl_send_cmd_sync(priv, &hcmd);
251}
252
253static struct iwl_lib_ops iwl2000_lib = {
254	.set_hw_params = iwl2000_hw_set_hw_params,
255	.txq_set_sched = iwlagn_txq_set_sched,
256	.txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
257	.txq_free_tfd = iwl_hw_txq_free_tfd,
258	.txq_init = iwl_hw_tx_queue_init,
259	.rx_handler_setup = iwlagn_rx_handler_setup,
260	.setup_deferred_work = iwlagn_bt_setup_deferred_work,
261	.cancel_deferred_work = iwlagn_bt_cancel_deferred_work,
262	.is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
263	.send_tx_power = iwlagn_send_tx_power,
264	.update_chain_flags = iwl_update_chain_flags,
265	.set_channel_switch = iwl2030_hw_channel_switch,
266	.apm_ops = {
267		.init = iwl_apm_init,
268		.config = iwl2000_nic_config,
269	},
270	.eeprom_ops = {
271		.regulatory_bands = {
272			EEPROM_REG_BAND_1_CHANNELS,
273			EEPROM_REG_BAND_2_CHANNELS,
274			EEPROM_REG_BAND_3_CHANNELS,
275			EEPROM_REG_BAND_4_CHANNELS,
276			EEPROM_REG_BAND_5_CHANNELS,
277			EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
278			EEPROM_REGULATORY_BAND_NO_HT40,
279		},
280		.query_addr = iwlagn_eeprom_query_addr,
281		.update_enhanced_txpower = iwlcore_eeprom_enhanced_txpower,
282	},
283	.temp_ops = {
284		.temperature = iwlagn_temperature,
285	},
286	.txfifo_flush = iwlagn_txfifo_flush,
287	.dev_txfifo_flush = iwlagn_dev_txfifo_flush,
288};
289
290static const struct iwl_ops iwl2000_ops = {
291	.lib = &iwl2000_lib,
292	.hcmd = &iwlagn_hcmd,
293	.utils = &iwlagn_hcmd_utils,
294};
295
296static const struct iwl_ops iwl2030_ops = {
297	.lib = &iwl2000_lib,
298	.hcmd = &iwlagn_bt_hcmd,
299	.utils = &iwlagn_hcmd_utils,
300};
301
302static const struct iwl_ops iwl105_ops = {
303	.lib = &iwl2000_lib,
304	.hcmd = &iwlagn_hcmd,
305	.utils = &iwlagn_hcmd_utils,
306};
307
308static const struct iwl_ops iwl135_ops = {
309	.lib = &iwl2000_lib,
310	.hcmd = &iwlagn_bt_hcmd,
311	.utils = &iwlagn_hcmd_utils,
312};
313
314static struct iwl_base_params iwl2000_base_params = {
315	.eeprom_size = OTP_LOW_IMAGE_SIZE,
316	.num_of_queues = IWLAGN_NUM_QUEUES,
317	.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
318	.pll_cfg_val = 0,
319	.max_ll_items = OTP_MAX_LL_ITEMS_2x00,
320	.shadow_ram_support = true,
321	.led_compensation = 51,
322	.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
323	.adv_thermal_throttle = true,
324	.support_ct_kill_exit = true,
325	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
326	.chain_noise_scale = 1000,
327	.wd_timeout = IWL_DEF_WD_TIMEOUT,
328	.max_event_log_size = 512,
329	.shadow_reg_enable = true,
330};
331
332
333static struct iwl_base_params iwl2030_base_params = {
334	.eeprom_size = OTP_LOW_IMAGE_SIZE,
335	.num_of_queues = IWLAGN_NUM_QUEUES,
336	.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
337	.pll_cfg_val = 0,
338	.max_ll_items = OTP_MAX_LL_ITEMS_2x00,
339	.shadow_ram_support = true,
340	.led_compensation = 57,
341	.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
342	.adv_thermal_throttle = true,
343	.support_ct_kill_exit = true,
344	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
345	.chain_noise_scale = 1000,
346	.wd_timeout = IWL_LONG_WD_TIMEOUT,
347	.max_event_log_size = 512,
348	.shadow_reg_enable = true,
349};
350
351static struct iwl_ht_params iwl2000_ht_params = {
352	.ht_greenfield_support = true,
353	.use_rts_for_aggregation = true, /* use rts/cts protection */
354};
355
356static struct iwl_bt_params iwl2030_bt_params = {
357	/* Due to bluetooth, we transmit 2.4 GHz probes only on antenna A */
358	.advanced_bt_coexist = true,
359	.agg_time_limit = BT_AGG_THRESHOLD_DEF,
360	.bt_init_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_NONE,
361	.bt_prio_boost = IWLAGN_BT_PRIO_BOOST_DEFAULT,
362	.bt_sco_disable = true,
363	.bt_session_2 = true,
364};
365
366#define IWL_DEVICE_2000						\
367	.fw_name_pre = IWL2000_FW_PRE,				\
368	.ucode_api_max = IWL2000_UCODE_API_MAX,			\
369	.ucode_api_min = IWL2000_UCODE_API_MIN,			\
370	.eeprom_ver = EEPROM_2000_EEPROM_VERSION,		\
371	.eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,	\
372	.ops = &iwl2000_ops,					\
373	.base_params = &iwl2000_base_params,			\
374	.need_dc_calib = true,					\
375	.need_temp_offset_calib = true,				\
376	.led_mode = IWL_LED_RF_STATE,				\
377	.iq_invert = true,					\
378	.disable_otp_refresh = true				\
379
380struct iwl_cfg iwl2000_2bgn_cfg = {
381	.name = "2000 Series 2x2 BGN",
382	IWL_DEVICE_2000,
383	.ht_params = &iwl2000_ht_params,
384};
385
386struct iwl_cfg iwl2000_2bg_cfg = {
387	.name = "2000 Series 2x2 BG",
388	IWL_DEVICE_2000,
389};
390
391#define IWL_DEVICE_2030						\
392	.fw_name_pre = IWL2030_FW_PRE,				\
393	.ucode_api_max = IWL2030_UCODE_API_MAX,			\
394	.ucode_api_min = IWL2030_UCODE_API_MIN,			\
395	.eeprom_ver = EEPROM_2000_EEPROM_VERSION,		\
396	.eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,	\
397	.ops = &iwl2030_ops,					\
398	.base_params = &iwl2030_base_params,			\
399	.bt_params = &iwl2030_bt_params,			\
400	.need_dc_calib = true,					\
401	.need_temp_offset_calib = true,				\
402	.led_mode = IWL_LED_RF_STATE,				\
403	.adv_pm = true,						\
404	.iq_invert = true					\
405
406struct iwl_cfg iwl2030_2bgn_cfg = {
407	.name = "2000 Series 2x2 BGN/BT",
408	IWL_DEVICE_2030,
409	.ht_params = &iwl2000_ht_params,
410};
411
412struct iwl_cfg iwl2030_2bg_cfg = {
413	.name = "2000 Series 2x2 BG/BT",
414	IWL_DEVICE_2030,
415};
416
417#define IWL_DEVICE_105						\
418	.fw_name_pre = IWL105_FW_PRE,				\
419	.ucode_api_max = IWL105_UCODE_API_MAX,			\
420	.ucode_api_min = IWL105_UCODE_API_MIN,			\
421	.eeprom_ver = EEPROM_2000_EEPROM_VERSION,		\
422	.eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,	\
423	.ops = &iwl105_ops,					\
424	.base_params = &iwl2000_base_params,			\
425	.need_dc_calib = true,					\
426	.need_temp_offset_calib = true,				\
427	.led_mode = IWL_LED_RF_STATE,				\
428	.adv_pm = true,						\
429	.rx_with_siso_diversity = true				\
430
431struct iwl_cfg iwl105_bg_cfg = {
432	.name = "105 Series 1x1 BG",
433	IWL_DEVICE_105,
434};
435
436struct iwl_cfg iwl105_bgn_cfg = {
437	.name = "105 Series 1x1 BGN",
438	IWL_DEVICE_105,
439	.ht_params = &iwl2000_ht_params,
440};
441
442#define IWL_DEVICE_135						\
443	.fw_name_pre = IWL105_FW_PRE,				\
444	.ucode_api_max = IWL105_UCODE_API_MAX,			\
445	.ucode_api_min = IWL105_UCODE_API_MIN,			\
446	.eeprom_ver = EEPROM_2000_EEPROM_VERSION,		\
447	.eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,	\
448	.ops = &iwl135_ops,					\
449	.base_params = &iwl2030_base_params,			\
450	.bt_params = &iwl2030_bt_params,			\
451	.need_dc_calib = true,					\
452	.need_temp_offset_calib = true,				\
453	.led_mode = IWL_LED_RF_STATE,				\
454	.adv_pm = true,						\
455	.rx_with_siso_diversity = true				\
456
457struct iwl_cfg iwl135_bg_cfg = {
458	.name = "105 Series 1x1 BG/BT",
459	IWL_DEVICE_135,
460};
461
462struct iwl_cfg iwl135_bgn_cfg = {
463	.name = "105 Series 1x1 BGN/BT",
464	IWL_DEVICE_135,
465	.ht_params = &iwl2000_ht_params,
466};
467
468MODULE_FIRMWARE(IWL2000_MODULE_FIRMWARE(IWL2000_UCODE_API_MAX));
469MODULE_FIRMWARE(IWL2030_MODULE_FIRMWARE(IWL2030_UCODE_API_MAX));
470MODULE_FIRMWARE(IWL105_MODULE_FIRMWARE(IWL105_UCODE_API_MAX));
471