iwlagn: call commit_rxon function directly
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-2000.c
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
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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
69 static 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 */
77 static 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
103 static 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
128 static 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
180 static 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
253 static struct iwl_lib_ops iwl2000_lib = {
254         .set_hw_params = iwl2000_hw_set_hw_params,
255         .rx_handler_setup = iwlagn_rx_handler_setup,
256         .setup_deferred_work = iwlagn_bt_setup_deferred_work,
257         .cancel_deferred_work = iwlagn_bt_cancel_deferred_work,
258         .is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
259         .update_chain_flags = iwl_update_chain_flags,
260         .set_channel_switch = iwl2030_hw_channel_switch,
261         .apm_ops = {
262                 .init = iwl_apm_init,
263                 .config = iwl2000_nic_config,
264         },
265         .eeprom_ops = {
266                 .regulatory_bands = {
267                         EEPROM_REG_BAND_1_CHANNELS,
268                         EEPROM_REG_BAND_2_CHANNELS,
269                         EEPROM_REG_BAND_3_CHANNELS,
270                         EEPROM_REG_BAND_4_CHANNELS,
271                         EEPROM_REG_BAND_5_CHANNELS,
272                         EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
273                         EEPROM_REGULATORY_BAND_NO_HT40,
274                 },
275                 .query_addr = iwlagn_eeprom_query_addr,
276                 .update_enhanced_txpower = iwlcore_eeprom_enhanced_txpower,
277         },
278         .temp_ops = {
279                 .temperature = iwlagn_temperature,
280         },
281         .txfifo_flush = iwlagn_txfifo_flush,
282         .dev_txfifo_flush = iwlagn_dev_txfifo_flush,
283 };
284
285 static const struct iwl_ops iwl2000_ops = {
286         .lib = &iwl2000_lib,
287         .hcmd = &iwlagn_hcmd,
288         .utils = &iwlagn_hcmd_utils,
289 };
290
291 static const struct iwl_ops iwl2030_ops = {
292         .lib = &iwl2000_lib,
293         .hcmd = &iwlagn_bt_hcmd,
294         .utils = &iwlagn_hcmd_utils,
295 };
296
297 static const struct iwl_ops iwl105_ops = {
298         .lib = &iwl2000_lib,
299         .hcmd = &iwlagn_hcmd,
300         .utils = &iwlagn_hcmd_utils,
301 };
302
303 static const struct iwl_ops iwl135_ops = {
304         .lib = &iwl2000_lib,
305         .hcmd = &iwlagn_bt_hcmd,
306         .utils = &iwlagn_hcmd_utils,
307 };
308
309 static struct iwl_base_params iwl2000_base_params = {
310         .eeprom_size = OTP_LOW_IMAGE_SIZE,
311         .num_of_queues = IWLAGN_NUM_QUEUES,
312         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
313         .pll_cfg_val = 0,
314         .max_ll_items = OTP_MAX_LL_ITEMS_2x00,
315         .shadow_ram_support = true,
316         .led_compensation = 51,
317         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
318         .adv_thermal_throttle = true,
319         .support_ct_kill_exit = true,
320         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
321         .chain_noise_scale = 1000,
322         .wd_timeout = IWL_DEF_WD_TIMEOUT,
323         .max_event_log_size = 512,
324         .shadow_reg_enable = true,
325 };
326
327
328 static struct iwl_base_params iwl2030_base_params = {
329         .eeprom_size = OTP_LOW_IMAGE_SIZE,
330         .num_of_queues = IWLAGN_NUM_QUEUES,
331         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
332         .pll_cfg_val = 0,
333         .max_ll_items = OTP_MAX_LL_ITEMS_2x00,
334         .shadow_ram_support = true,
335         .led_compensation = 57,
336         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
337         .adv_thermal_throttle = true,
338         .support_ct_kill_exit = true,
339         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
340         .chain_noise_scale = 1000,
341         .wd_timeout = IWL_LONG_WD_TIMEOUT,
342         .max_event_log_size = 512,
343         .shadow_reg_enable = true,
344 };
345
346 static struct iwl_ht_params iwl2000_ht_params = {
347         .ht_greenfield_support = true,
348         .use_rts_for_aggregation = true, /* use rts/cts protection */
349 };
350
351 static struct iwl_bt_params iwl2030_bt_params = {
352         /* Due to bluetooth, we transmit 2.4 GHz probes only on antenna A */
353         .advanced_bt_coexist = true,
354         .agg_time_limit = BT_AGG_THRESHOLD_DEF,
355         .bt_init_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_NONE,
356         .bt_prio_boost = IWLAGN_BT_PRIO_BOOST_DEFAULT,
357         .bt_sco_disable = true,
358         .bt_session_2 = true,
359 };
360
361 #define IWL_DEVICE_2000                                         \
362         .fw_name_pre = IWL2000_FW_PRE,                          \
363         .ucode_api_max = IWL2000_UCODE_API_MAX,                 \
364         .ucode_api_min = IWL2000_UCODE_API_MIN,                 \
365         .eeprom_ver = EEPROM_2000_EEPROM_VERSION,               \
366         .eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,       \
367         .ops = &iwl2000_ops,                                    \
368         .base_params = &iwl2000_base_params,                    \
369         .need_dc_calib = true,                                  \
370         .need_temp_offset_calib = true,                         \
371         .led_mode = IWL_LED_RF_STATE,                           \
372         .iq_invert = true,                                      \
373         .disable_otp_refresh = true                             \
374
375 struct iwl_cfg iwl2000_2bgn_cfg = {
376         .name = "2000 Series 2x2 BGN",
377         IWL_DEVICE_2000,
378         .ht_params = &iwl2000_ht_params,
379 };
380
381 struct iwl_cfg iwl2000_2bg_cfg = {
382         .name = "2000 Series 2x2 BG",
383         IWL_DEVICE_2000,
384 };
385
386 #define IWL_DEVICE_2030                                         \
387         .fw_name_pre = IWL2030_FW_PRE,                          \
388         .ucode_api_max = IWL2030_UCODE_API_MAX,                 \
389         .ucode_api_min = IWL2030_UCODE_API_MIN,                 \
390         .eeprom_ver = EEPROM_2000_EEPROM_VERSION,               \
391         .eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,       \
392         .ops = &iwl2030_ops,                                    \
393         .base_params = &iwl2030_base_params,                    \
394         .bt_params = &iwl2030_bt_params,                        \
395         .need_dc_calib = true,                                  \
396         .need_temp_offset_calib = true,                         \
397         .led_mode = IWL_LED_RF_STATE,                           \
398         .adv_pm = true,                                         \
399         .iq_invert = true                                       \
400
401 struct iwl_cfg iwl2030_2bgn_cfg = {
402         .name = "2000 Series 2x2 BGN/BT",
403         IWL_DEVICE_2030,
404         .ht_params = &iwl2000_ht_params,
405 };
406
407 struct iwl_cfg iwl2030_2bg_cfg = {
408         .name = "2000 Series 2x2 BG/BT",
409         IWL_DEVICE_2030,
410 };
411
412 #define IWL_DEVICE_105                                          \
413         .fw_name_pre = IWL105_FW_PRE,                           \
414         .ucode_api_max = IWL105_UCODE_API_MAX,                  \
415         .ucode_api_min = IWL105_UCODE_API_MIN,                  \
416         .eeprom_ver = EEPROM_2000_EEPROM_VERSION,               \
417         .eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,       \
418         .ops = &iwl105_ops,                                     \
419         .base_params = &iwl2000_base_params,                    \
420         .need_dc_calib = true,                                  \
421         .need_temp_offset_calib = true,                         \
422         .led_mode = IWL_LED_RF_STATE,                           \
423         .adv_pm = true,                                         \
424         .rx_with_siso_diversity = true                          \
425
426 struct iwl_cfg iwl105_bg_cfg = {
427         .name = "105 Series 1x1 BG",
428         IWL_DEVICE_105,
429 };
430
431 struct iwl_cfg iwl105_bgn_cfg = {
432         .name = "105 Series 1x1 BGN",
433         IWL_DEVICE_105,
434         .ht_params = &iwl2000_ht_params,
435 };
436
437 #define IWL_DEVICE_135                                          \
438         .fw_name_pre = IWL105_FW_PRE,                           \
439         .ucode_api_max = IWL105_UCODE_API_MAX,                  \
440         .ucode_api_min = IWL105_UCODE_API_MIN,                  \
441         .eeprom_ver = EEPROM_2000_EEPROM_VERSION,               \
442         .eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,       \
443         .ops = &iwl135_ops,                                     \
444         .base_params = &iwl2030_base_params,                    \
445         .bt_params = &iwl2030_bt_params,                        \
446         .need_dc_calib = true,                                  \
447         .need_temp_offset_calib = true,                         \
448         .led_mode = IWL_LED_RF_STATE,                           \
449         .adv_pm = true,                                         \
450         .rx_with_siso_diversity = true                          \
451
452 struct iwl_cfg iwl135_bg_cfg = {
453         .name = "105 Series 1x1 BG/BT",
454         IWL_DEVICE_135,
455 };
456
457 struct iwl_cfg iwl135_bgn_cfg = {
458         .name = "105 Series 1x1 BGN/BT",
459         IWL_DEVICE_135,
460         .ht_params = &iwl2000_ht_params,
461 };
462
463 MODULE_FIRMWARE(IWL2000_MODULE_FIRMWARE(IWL2000_UCODE_API_MAX));
464 MODULE_FIRMWARE(IWL2030_MODULE_FIRMWARE(IWL2030_UCODE_API_MAX));
465 MODULE_FIRMWARE(IWL105_MODULE_FIRMWARE(IWL105_UCODE_API_MAX));