Merge branch 'wireless-next-2.6' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / drivers / net / wireless / iwlwifi / iwl-1000.c
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-agn.h"
46 #include "iwl-helpers.h"
47 #include "iwl-agn-hw.h"
48 #include "iwl-agn-led.h"
49 #include "iwl-agn-debugfs.h"
50
51 /* Highest firmware API version supported */
52 #define IWL1000_UCODE_API_MAX 5
53 #define IWL100_UCODE_API_MAX 5
54
55 /* Lowest firmware API version supported */
56 #define IWL1000_UCODE_API_MIN 1
57 #define IWL100_UCODE_API_MIN 5
58
59 #define IWL1000_FW_PRE "iwlwifi-1000-"
60 #define _IWL1000_MODULE_FIRMWARE(api) IWL1000_FW_PRE #api ".ucode"
61 #define IWL1000_MODULE_FIRMWARE(api) _IWL1000_MODULE_FIRMWARE(api)
62
63 #define IWL100_FW_PRE "iwlwifi-100-"
64 #define _IWL100_MODULE_FIRMWARE(api) IWL100_FW_PRE #api ".ucode"
65 #define IWL100_MODULE_FIRMWARE(api) _IWL100_MODULE_FIRMWARE(api)
66
67
68 /*
69  * For 1000, use advance thermal throttling critical temperature threshold,
70  * but legacy thermal management implementation for now.
71  * This is for the reason of 1000 uCode using advance thermal throttling API
72  * but not implement ct_kill_exit based on ct_kill exit temperature
73  * so the thermal throttling will still based on legacy thermal throttling
74  * management.
75  * The code here need to be modified once 1000 uCode has the advanced thermal
76  * throttling algorithm in place
77  */
78 static void iwl1000_set_ct_threshold(struct iwl_priv *priv)
79 {
80         /* want Celsius */
81         priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
82         priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
83 }
84
85 /* NIC configuration for 1000 series */
86 static void iwl1000_nic_config(struct iwl_priv *priv)
87 {
88         /* set CSR_HW_CONFIG_REG for uCode use */
89         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
90                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
91                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
92
93         /* Setting digital SVR for 1000 card to 1.32V */
94         /* locking is acquired in iwl_set_bits_mask_prph() function */
95         iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
96                                 APMG_SVR_DIGITAL_VOLTAGE_1_32,
97                                 ~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
98 }
99
100 static struct iwl_sensitivity_ranges iwl1000_sensitivity = {
101         .min_nrg_cck = 95,
102         .max_nrg_cck = 0, /* not used, set to 0 */
103         .auto_corr_min_ofdm = 90,
104         .auto_corr_min_ofdm_mrc = 170,
105         .auto_corr_min_ofdm_x1 = 120,
106         .auto_corr_min_ofdm_mrc_x1 = 240,
107
108         .auto_corr_max_ofdm = 120,
109         .auto_corr_max_ofdm_mrc = 210,
110         .auto_corr_max_ofdm_x1 = 155,
111         .auto_corr_max_ofdm_mrc_x1 = 290,
112
113         .auto_corr_min_cck = 125,
114         .auto_corr_max_cck = 200,
115         .auto_corr_min_cck_mrc = 170,
116         .auto_corr_max_cck_mrc = 400,
117         .nrg_th_cck = 95,
118         .nrg_th_ofdm = 95,
119
120         .barker_corr_th_min = 190,
121         .barker_corr_th_min_mrc = 390,
122         .nrg_th_cca = 62,
123 };
124
125 static int iwl1000_hw_set_hw_params(struct iwl_priv *priv)
126 {
127         if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
128             priv->cfg->mod_params->num_of_queues <= IWLAGN_NUM_QUEUES)
129                 priv->cfg->base_params->num_of_queues =
130                         priv->cfg->mod_params->num_of_queues;
131
132         priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
133         priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
134         priv->hw_params.scd_bc_tbls_size =
135                         priv->cfg->base_params->num_of_queues *
136                         sizeof(struct iwlagn_scd_bc_tbl);
137         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
138         priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
139         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
140
141         priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
142         priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
143
144         priv->hw_params.max_bsm_size = 0;
145         priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
146                                         BIT(IEEE80211_BAND_5GHZ);
147         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
148
149         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
150         if (priv->cfg->rx_with_siso_diversity)
151                 priv->hw_params.rx_chains_num = 1;
152         else
153                 priv->hw_params.rx_chains_num =
154                         num_of_ant(priv->cfg->valid_rx_ant);
155         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
156         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
157
158         iwl1000_set_ct_threshold(priv);
159
160         /* Set initial sensitivity parameters */
161         /* Set initial calibration set */
162         priv->hw_params.sens = &iwl1000_sensitivity;
163         priv->hw_params.calib_init_cfg =
164                         BIT(IWL_CALIB_XTAL)             |
165                         BIT(IWL_CALIB_LO)               |
166                         BIT(IWL_CALIB_TX_IQ)            |
167                         BIT(IWL_CALIB_TX_IQ_PERD)       |
168                         BIT(IWL_CALIB_BASE_BAND);
169         if (priv->cfg->need_dc_calib)
170                 priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_DC);
171
172         priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
173
174         return 0;
175 }
176
177 static struct iwl_lib_ops iwl1000_lib = {
178         .set_hw_params = iwl1000_hw_set_hw_params,
179         .txq_update_byte_cnt_tbl = iwlagn_txq_update_byte_cnt_tbl,
180         .txq_inval_byte_cnt_tbl = iwlagn_txq_inval_byte_cnt_tbl,
181         .txq_set_sched = iwlagn_txq_set_sched,
182         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
183         .txq_free_tfd = iwl_hw_txq_free_tfd,
184         .txq_init = iwl_hw_tx_queue_init,
185         .rx_handler_setup = iwlagn_rx_handler_setup,
186         .setup_deferred_work = iwlagn_setup_deferred_work,
187         .is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
188         .load_ucode = iwlagn_load_ucode,
189         .dump_nic_event_log = iwl_dump_nic_event_log,
190         .dump_nic_error_log = iwl_dump_nic_error_log,
191         .dump_csr = iwl_dump_csr,
192         .dump_fh = iwl_dump_fh,
193         .init_alive_start = iwlagn_init_alive_start,
194         .alive_notify = iwlagn_alive_notify,
195         .send_tx_power = iwlagn_send_tx_power,
196         .update_chain_flags = iwl_update_chain_flags,
197         .apm_ops = {
198                 .init = iwl_apm_init,
199                 .config = iwl1000_nic_config,
200         },
201         .eeprom_ops = {
202                 .regulatory_bands = {
203                         EEPROM_REG_BAND_1_CHANNELS,
204                         EEPROM_REG_BAND_2_CHANNELS,
205                         EEPROM_REG_BAND_3_CHANNELS,
206                         EEPROM_REG_BAND_4_CHANNELS,
207                         EEPROM_REG_BAND_5_CHANNELS,
208                         EEPROM_REG_BAND_24_HT40_CHANNELS,
209                         EEPROM_REG_BAND_52_HT40_CHANNELS
210                 },
211                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
212                 .release_semaphore = iwlcore_eeprom_release_semaphore,
213                 .calib_version  = iwlagn_eeprom_calib_version,
214                 .query_addr = iwlagn_eeprom_query_addr,
215         },
216         .isr_ops = {
217                 .isr = iwl_isr_ict,
218                 .free = iwl_free_isr_ict,
219                 .alloc = iwl_alloc_isr_ict,
220                 .reset = iwl_reset_ict,
221                 .disable = iwl_disable_ict,
222         },
223         .temp_ops = {
224                 .temperature = iwlagn_temperature,
225          },
226         .debugfs_ops = {
227                 .rx_stats_read = iwl_ucode_rx_stats_read,
228                 .tx_stats_read = iwl_ucode_tx_stats_read,
229                 .general_stats_read = iwl_ucode_general_stats_read,
230                 .bt_stats_read = iwl_ucode_bt_stats_read,
231                 .reply_tx_error = iwl_reply_tx_error_read,
232         },
233         .txfifo_flush = iwlagn_txfifo_flush,
234         .dev_txfifo_flush = iwlagn_dev_txfifo_flush,
235         .tt_ops = {
236                 .lower_power_detection = iwl_tt_is_low_power_state,
237                 .tt_power_mode = iwl_tt_current_power_mode,
238                 .ct_kill_check = iwl_check_for_ct_kill,
239         }
240 };
241
242 static const struct iwl_ops iwl1000_ops = {
243         .lib = &iwl1000_lib,
244         .hcmd = &iwlagn_hcmd,
245         .utils = &iwlagn_hcmd_utils,
246         .led = &iwlagn_led_ops,
247         .ieee80211_ops = &iwlagn_hw_ops,
248 };
249
250 static struct iwl_base_params iwl1000_base_params = {
251         .num_of_queues = IWLAGN_NUM_QUEUES,
252         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
253         .eeprom_size = OTP_LOW_IMAGE_SIZE,
254         .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
255         .set_l0s = true,
256         .use_bsm = false,
257         .max_ll_items = OTP_MAX_LL_ITEMS_1000,
258         .shadow_ram_support = false,
259         .led_compensation = 51,
260         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
261         .support_ct_kill_exit = true,
262         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF,
263         .chain_noise_scale = 1000,
264         .wd_timeout = IWL_DEF_WD_TIMEOUT,
265         .max_event_log_size = 128,
266         .ucode_tracing = true,
267         .sensitivity_calib_by_driver = true,
268         .chain_noise_calib_by_driver = true,
269 };
270 static struct iwl_ht_params iwl1000_ht_params = {
271         .ht_greenfield_support = true,
272         .use_rts_for_aggregation = true, /* use rts/cts protection */
273 };
274
275 #define IWL_DEVICE_1000                                         \
276         .fw_name_pre = IWL1000_FW_PRE,                          \
277         .ucode_api_max = IWL1000_UCODE_API_MAX,                 \
278         .ucode_api_min = IWL1000_UCODE_API_MIN,                 \
279         .eeprom_ver = EEPROM_1000_EEPROM_VERSION,               \
280         .eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,       \
281         .ops = &iwl1000_ops,                                    \
282         .mod_params = &iwlagn_mod_params,                       \
283         .base_params = &iwl1000_base_params,                    \
284         .led_mode = IWL_LED_BLINK
285
286 struct iwl_cfg iwl1000_bgn_cfg = {
287         .name = "Intel(R) Centrino(R) Wireless-N 1000 BGN",
288         IWL_DEVICE_1000,
289         .ht_params = &iwl1000_ht_params,
290 };
291
292 struct iwl_cfg iwl1000_bg_cfg = {
293         .name = "Intel(R) Centrino(R) Wireless-N 1000 BG",
294         IWL_DEVICE_1000,
295 };
296
297 #define IWL_DEVICE_100                                          \
298         .fw_name_pre = IWL100_FW_PRE,                           \
299         .ucode_api_max = IWL100_UCODE_API_MAX,                  \
300         .ucode_api_min = IWL100_UCODE_API_MIN,                  \
301         .eeprom_ver = EEPROM_1000_EEPROM_VERSION,               \
302         .eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,       \
303         .ops = &iwl1000_ops,                                    \
304         .mod_params = &iwlagn_mod_params,                       \
305         .base_params = &iwl1000_base_params,                    \
306         .led_mode = IWL_LED_RF_STATE,                           \
307         .rx_with_siso_diversity = true
308
309 struct iwl_cfg iwl100_bgn_cfg = {
310         .name = "Intel(R) Centrino(R) Wireless-N 100 BGN",
311         IWL_DEVICE_100,
312         .ht_params = &iwl1000_ht_params,
313 };
314
315 struct iwl_cfg iwl100_bg_cfg = {
316         .name = "Intel(R) Centrino(R) Wireless-N 100 BG",
317         IWL_DEVICE_100,
318 };
319
320 MODULE_FIRMWARE(IWL1000_MODULE_FIRMWARE(IWL1000_UCODE_API_MAX));
321 MODULE_FIRMWARE(IWL100_MODULE_FIRMWARE(IWL100_UCODE_API_MAX));