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1 /******************************************************************************
2  *
3  * Copyright(c) 2008 - 2010 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-helpers.h"
46 #include "iwl-5000-hw.h"
47 #include "iwl-6000-hw.h"
48 #include "iwl-agn-led.h"
49
50 /* Highest firmware API version supported */
51 #define IWL6000_UCODE_API_MAX 4
52 #define IWL6050_UCODE_API_MAX 4
53
54 /* Lowest firmware API version supported */
55 #define IWL6000_UCODE_API_MIN 4
56 #define IWL6050_UCODE_API_MIN 4
57
58 #define IWL6000_FW_PRE "iwlwifi-6000-"
59 #define _IWL6000_MODULE_FIRMWARE(api) IWL6000_FW_PRE #api ".ucode"
60 #define IWL6000_MODULE_FIRMWARE(api) _IWL6000_MODULE_FIRMWARE(api)
61
62 #define IWL6050_FW_PRE "iwlwifi-6050-"
63 #define _IWL6050_MODULE_FIRMWARE(api) IWL6050_FW_PRE #api ".ucode"
64 #define IWL6050_MODULE_FIRMWARE(api) _IWL6050_MODULE_FIRMWARE(api)
65
66 static void iwl6000_set_ct_threshold(struct iwl_priv *priv)
67 {
68         /* want Celsius */
69         priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD;
70         priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
71 }
72
73 /* NIC configuration for 6000 series */
74 static void iwl6000_nic_config(struct iwl_priv *priv)
75 {
76         u16 radio_cfg;
77
78         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
79
80         /* write radio config values to register */
81         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX)
82                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
83                             EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
84                             EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
85                             EEPROM_RF_CFG_DASH_MSK(radio_cfg));
86
87         /* set CSR_HW_CONFIG_REG for uCode use */
88         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
89                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
90                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
91
92         /* no locking required for register write */
93         if (priv->cfg->pa_type == IWL_PA_INTERNAL) {
94                 /* 2x2 IPA phy type */
95                 iwl_write32(priv, CSR_GP_DRIVER_REG,
96                              CSR_GP_DRIVER_REG_BIT_RADIO_SKU_2x2_IPA);
97         }
98         /* else do nothing, uCode configured */
99 }
100
101 static struct iwl_sensitivity_ranges iwl6000_sensitivity = {
102         .min_nrg_cck = 97,
103         .max_nrg_cck = 0, /* not used, set to 0 */
104         .auto_corr_min_ofdm = 80,
105         .auto_corr_min_ofdm_mrc = 128,
106         .auto_corr_min_ofdm_x1 = 105,
107         .auto_corr_min_ofdm_mrc_x1 = 192,
108
109         .auto_corr_max_ofdm = 145,
110         .auto_corr_max_ofdm_mrc = 232,
111         .auto_corr_max_ofdm_x1 = 110,
112         .auto_corr_max_ofdm_mrc_x1 = 232,
113
114         .auto_corr_min_cck = 125,
115         .auto_corr_max_cck = 175,
116         .auto_corr_min_cck_mrc = 160,
117         .auto_corr_max_cck_mrc = 310,
118         .nrg_th_cck = 97,
119         .nrg_th_ofdm = 100,
120
121         .barker_corr_th_min = 190,
122         .barker_corr_th_min_mrc = 390,
123         .nrg_th_cca = 62,
124 };
125
126 static int iwl6000_hw_set_hw_params(struct iwl_priv *priv)
127 {
128         if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
129             priv->cfg->mod_params->num_of_queues <= IWL50_NUM_QUEUES)
130                 priv->cfg->num_of_queues =
131                         priv->cfg->mod_params->num_of_queues;
132
133         priv->hw_params.max_txq_num = priv->cfg->num_of_queues;
134         priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
135         priv->hw_params.scd_bc_tbls_size =
136                         priv->cfg->num_of_queues *
137                         sizeof(struct iwl5000_scd_bc_tbl);
138         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
139         priv->hw_params.max_stations = IWL5000_STATION_COUNT;
140         priv->hw_params.bcast_sta_id = IWL5000_BROADCAST_ID;
141
142         priv->hw_params.max_data_size = IWL60_RTC_DATA_SIZE;
143         priv->hw_params.max_inst_size = IWL60_RTC_INST_SIZE;
144
145         priv->hw_params.max_bsm_size = 0;
146         priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
147                                         BIT(IEEE80211_BAND_5GHZ);
148         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
149
150         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
151         priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
152         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
153         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
154
155         if (priv->cfg->ops->lib->temp_ops.set_ct_kill)
156                 priv->cfg->ops->lib->temp_ops.set_ct_kill(priv);
157
158         /* Set initial sensitivity parameters */
159         /* Set initial calibration set */
160         priv->hw_params.sens = &iwl6000_sensitivity;
161         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
162         case CSR_HW_REV_TYPE_6x50:
163                 priv->hw_params.calib_init_cfg =
164                         BIT(IWL_CALIB_XTAL)             |
165                         BIT(IWL_CALIB_DC)               |
166                         BIT(IWL_CALIB_LO)               |
167                         BIT(IWL_CALIB_TX_IQ)            |
168                         BIT(IWL_CALIB_BASE_BAND);
169
170                 break;
171         default:
172                 priv->hw_params.calib_init_cfg =
173                         BIT(IWL_CALIB_XTAL)             |
174                         BIT(IWL_CALIB_LO)               |
175                         BIT(IWL_CALIB_TX_IQ)            |
176                         BIT(IWL_CALIB_BASE_BAND);
177                 break;
178         }
179
180         return 0;
181 }
182
183 static int iwl6000_hw_channel_switch(struct iwl_priv *priv, u16 channel)
184 {
185         struct iwl6000_channel_switch_cmd cmd;
186         const struct iwl_channel_info *ch_info;
187         struct iwl_host_cmd hcmd = {
188                 .id = REPLY_CHANNEL_SWITCH,
189                 .len = sizeof(cmd),
190                 .flags = CMD_SIZE_HUGE,
191                 .data = &cmd,
192         };
193
194         IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
195                 priv->active_rxon.channel, channel);
196
197         cmd.band = priv->band == IEEE80211_BAND_2GHZ;
198         cmd.channel = cpu_to_le16(channel);
199         cmd.rxon_flags = priv->staging_rxon.flags;
200         cmd.rxon_filter_flags = priv->staging_rxon.filter_flags;
201         cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
202         ch_info = iwl_get_channel_info(priv, priv->band, channel);
203         if (ch_info)
204                 cmd.expect_beacon = is_channel_radar(ch_info);
205         else {
206                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
207                         priv->active_rxon.channel, channel);
208                 return -EFAULT;
209         }
210         priv->switch_rxon.channel = cpu_to_le16(channel);
211         priv->switch_rxon.switch_in_progress = true;
212
213         return iwl_send_cmd_sync(priv, &hcmd);
214 }
215
216 static struct iwl_lib_ops iwl6000_lib = {
217         .set_hw_params = iwl6000_hw_set_hw_params,
218         .txq_update_byte_cnt_tbl = iwl5000_txq_update_byte_cnt_tbl,
219         .txq_inval_byte_cnt_tbl = iwl5000_txq_inval_byte_cnt_tbl,
220         .txq_set_sched = iwl5000_txq_set_sched,
221         .txq_agg_enable = iwl5000_txq_agg_enable,
222         .txq_agg_disable = iwl5000_txq_agg_disable,
223         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
224         .txq_free_tfd = iwl_hw_txq_free_tfd,
225         .txq_init = iwl_hw_tx_queue_init,
226         .rx_handler_setup = iwl5000_rx_handler_setup,
227         .setup_deferred_work = iwl5000_setup_deferred_work,
228         .is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,
229         .load_ucode = iwl5000_load_ucode,
230         .dump_nic_event_log = iwl_dump_nic_event_log,
231         .dump_nic_error_log = iwl_dump_nic_error_log,
232         .dump_csr = iwl_dump_csr,
233         .dump_fh = iwl_dump_fh,
234         .init_alive_start = iwl5000_init_alive_start,
235         .alive_notify = iwl5000_alive_notify,
236         .send_tx_power = iwl5000_send_tx_power,
237         .update_chain_flags = iwl_update_chain_flags,
238         .set_channel_switch = iwl6000_hw_channel_switch,
239         .apm_ops = {
240                 .init = iwl_apm_init,
241                 .stop = iwl_apm_stop,
242                 .config = iwl6000_nic_config,
243                 .set_pwr_src = iwl_set_pwr_src,
244         },
245         .eeprom_ops = {
246                 .regulatory_bands = {
247                         EEPROM_5000_REG_BAND_1_CHANNELS,
248                         EEPROM_5000_REG_BAND_2_CHANNELS,
249                         EEPROM_5000_REG_BAND_3_CHANNELS,
250                         EEPROM_5000_REG_BAND_4_CHANNELS,
251                         EEPROM_5000_REG_BAND_5_CHANNELS,
252                         EEPROM_5000_REG_BAND_24_HT40_CHANNELS,
253                         EEPROM_5000_REG_BAND_52_HT40_CHANNELS
254                 },
255                 .verify_signature  = iwlcore_eeprom_verify_signature,
256                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
257                 .release_semaphore = iwlcore_eeprom_release_semaphore,
258                 .calib_version  = iwl5000_eeprom_calib_version,
259                 .query_addr = iwl5000_eeprom_query_addr,
260                 .update_enhanced_txpower = iwlcore_eeprom_enhanced_txpower,
261         },
262         .post_associate = iwl_post_associate,
263         .isr = iwl_isr_ict,
264         .config_ap = iwl_config_ap,
265         .temp_ops = {
266                 .temperature = iwl5000_temperature,
267                 .set_ct_kill = iwl6000_set_ct_threshold,
268          },
269         .add_bcast_station = iwl_add_bcast_station,
270 };
271
272 static const struct iwl_ops iwl6000_ops = {
273         .ucode = &iwl5000_ucode,
274         .lib = &iwl6000_lib,
275         .hcmd = &iwl5000_hcmd,
276         .utils = &iwl5000_hcmd_utils,
277         .led = &iwlagn_led_ops,
278 };
279
280 static struct iwl_hcmd_utils_ops iwl6050_hcmd_utils = {
281         .get_hcmd_size = iwl5000_get_hcmd_size,
282         .build_addsta_hcmd = iwl5000_build_addsta_hcmd,
283         .rts_tx_cmd_flag = iwl5000_rts_tx_cmd_flag,
284         .calc_rssi = iwl5000_calc_rssi,
285 };
286
287 static const struct iwl_ops iwl6050_ops = {
288         .ucode = &iwl5000_ucode,
289         .lib = &iwl6000_lib,
290         .hcmd = &iwl5000_hcmd,
291         .utils = &iwl6050_hcmd_utils,
292         .led = &iwlagn_led_ops,
293 };
294
295 /*
296  * "i": Internal configuration, use internal Power Amplifier
297  */
298 struct iwl_cfg iwl6000i_2agn_cfg = {
299         .name = "6000 Series 2x2 AGN",
300         .fw_name_pre = IWL6000_FW_PRE,
301         .ucode_api_max = IWL6000_UCODE_API_MAX,
302         .ucode_api_min = IWL6000_UCODE_API_MIN,
303         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
304         .ops = &iwl6000_ops,
305         .eeprom_size = OTP_LOW_IMAGE_SIZE,
306         .eeprom_ver = EEPROM_6000_EEPROM_VERSION,
307         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
308         .num_of_queues = IWL50_NUM_QUEUES,
309         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
310         .mod_params = &iwl50_mod_params,
311         .valid_tx_ant = ANT_BC,
312         .valid_rx_ant = ANT_BC,
313         .pll_cfg_val = 0,
314         .set_l0s = true,
315         .use_bsm = false,
316         .pa_type = IWL_PA_INTERNAL,
317         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
318         .shadow_ram_support = true,
319         .ht_greenfield_support = true,
320         .led_compensation = 51,
321         .use_rts_for_ht = true, /* use rts/cts protection */
322         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
323         .supports_idle = true,
324         .adv_thermal_throttle = true,
325         .support_ct_kill_exit = true,
326         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
327 };
328
329 struct iwl_cfg iwl6000i_2abg_cfg = {
330         .name = "6000 Series 2x2 ABG",
331         .fw_name_pre = IWL6000_FW_PRE,
332         .ucode_api_max = IWL6000_UCODE_API_MAX,
333         .ucode_api_min = IWL6000_UCODE_API_MIN,
334         .sku = IWL_SKU_A|IWL_SKU_G,
335         .ops = &iwl6000_ops,
336         .eeprom_size = OTP_LOW_IMAGE_SIZE,
337         .eeprom_ver = EEPROM_6000_EEPROM_VERSION,
338         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
339         .num_of_queues = IWL50_NUM_QUEUES,
340         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
341         .mod_params = &iwl50_mod_params,
342         .valid_tx_ant = ANT_BC,
343         .valid_rx_ant = ANT_BC,
344         .pll_cfg_val = 0,
345         .set_l0s = true,
346         .use_bsm = false,
347         .pa_type = IWL_PA_INTERNAL,
348         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
349         .shadow_ram_support = true,
350         .ht_greenfield_support = true,
351         .led_compensation = 51,
352         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
353         .supports_idle = true,
354         .adv_thermal_throttle = true,
355         .support_ct_kill_exit = true,
356         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
357 };
358
359 struct iwl_cfg iwl6000i_2bg_cfg = {
360         .name = "6000 Series 2x2 BG",
361         .fw_name_pre = IWL6000_FW_PRE,
362         .ucode_api_max = IWL6000_UCODE_API_MAX,
363         .ucode_api_min = IWL6000_UCODE_API_MIN,
364         .sku = IWL_SKU_G,
365         .ops = &iwl6000_ops,
366         .eeprom_size = OTP_LOW_IMAGE_SIZE,
367         .eeprom_ver = EEPROM_6000_EEPROM_VERSION,
368         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
369         .num_of_queues = IWL50_NUM_QUEUES,
370         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
371         .mod_params = &iwl50_mod_params,
372         .valid_tx_ant = ANT_BC,
373         .valid_rx_ant = ANT_BC,
374         .pll_cfg_val = 0,
375         .set_l0s = true,
376         .use_bsm = false,
377         .pa_type = IWL_PA_INTERNAL,
378         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
379         .shadow_ram_support = true,
380         .ht_greenfield_support = true,
381         .led_compensation = 51,
382         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
383         .supports_idle = true,
384         .adv_thermal_throttle = true,
385         .support_ct_kill_exit = true,
386         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
387 };
388
389 struct iwl_cfg iwl6050_2agn_cfg = {
390         .name = "6050 Series 2x2 AGN",
391         .fw_name_pre = IWL6050_FW_PRE,
392         .ucode_api_max = IWL6050_UCODE_API_MAX,
393         .ucode_api_min = IWL6050_UCODE_API_MIN,
394         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
395         .ops = &iwl6050_ops,
396         .eeprom_size = OTP_LOW_IMAGE_SIZE,
397         .eeprom_ver = EEPROM_6050_EEPROM_VERSION,
398         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
399         .num_of_queues = IWL50_NUM_QUEUES,
400         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
401         .mod_params = &iwl50_mod_params,
402         .valid_tx_ant = ANT_AB,
403         .valid_rx_ant = ANT_AB,
404         .pll_cfg_val = 0,
405         .set_l0s = true,
406         .use_bsm = false,
407         .pa_type = IWL_PA_SYSTEM,
408         .max_ll_items = OTP_MAX_LL_ITEMS_6x50,
409         .shadow_ram_support = true,
410         .ht_greenfield_support = true,
411         .led_compensation = 51,
412         .use_rts_for_ht = true, /* use rts/cts protection */
413         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
414         .supports_idle = true,
415         .adv_thermal_throttle = true,
416         .support_ct_kill_exit = true,
417         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
418 };
419
420 struct iwl_cfg iwl6050_2abg_cfg = {
421         .name = "6050 Series 2x2 ABG",
422         .fw_name_pre = IWL6050_FW_PRE,
423         .ucode_api_max = IWL6050_UCODE_API_MAX,
424         .ucode_api_min = IWL6050_UCODE_API_MIN,
425         .sku = IWL_SKU_A|IWL_SKU_G,
426         .ops = &iwl6050_ops,
427         .eeprom_size = OTP_LOW_IMAGE_SIZE,
428         .eeprom_ver = EEPROM_6050_EEPROM_VERSION,
429         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
430         .num_of_queues = IWL50_NUM_QUEUES,
431         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
432         .mod_params = &iwl50_mod_params,
433         .valid_tx_ant = ANT_AB,
434         .valid_rx_ant = ANT_AB,
435         .pll_cfg_val = 0,
436         .set_l0s = true,
437         .use_bsm = false,
438         .pa_type = IWL_PA_SYSTEM,
439         .max_ll_items = OTP_MAX_LL_ITEMS_6x50,
440         .shadow_ram_support = true,
441         .ht_greenfield_support = true,
442         .led_compensation = 51,
443         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
444         .supports_idle = true,
445         .adv_thermal_throttle = true,
446         .support_ct_kill_exit = true,
447         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
448 };
449
450 struct iwl_cfg iwl6000_3agn_cfg = {
451         .name = "6000 Series 3x3 AGN",
452         .fw_name_pre = IWL6000_FW_PRE,
453         .ucode_api_max = IWL6000_UCODE_API_MAX,
454         .ucode_api_min = IWL6000_UCODE_API_MIN,
455         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
456         .ops = &iwl6000_ops,
457         .eeprom_size = OTP_LOW_IMAGE_SIZE,
458         .eeprom_ver = EEPROM_6000_EEPROM_VERSION,
459         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
460         .num_of_queues = IWL50_NUM_QUEUES,
461         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
462         .mod_params = &iwl50_mod_params,
463         .valid_tx_ant = ANT_ABC,
464         .valid_rx_ant = ANT_ABC,
465         .pll_cfg_val = 0,
466         .set_l0s = true,
467         .use_bsm = false,
468         .pa_type = IWL_PA_SYSTEM,
469         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
470         .shadow_ram_support = true,
471         .ht_greenfield_support = true,
472         .led_compensation = 51,
473         .use_rts_for_ht = true, /* use rts/cts protection */
474         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
475         .supports_idle = true,
476         .adv_thermal_throttle = true,
477         .support_ct_kill_exit = true,
478         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
479 };
480
481 MODULE_FIRMWARE(IWL6000_MODULE_FIRMWARE(IWL6000_UCODE_API_MAX));
482 MODULE_FIRMWARE(IWL6050_MODULE_FIRMWARE(IWL6050_UCODE_API_MAX));