2 * This file is part of wl1271
4 * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
5 * Copyright (C) 2008-2009 Nokia Corporation
7 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * version 2 as published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
28 #include <linux/mutex.h>
29 #include <linux/completion.h>
30 #include <linux/spinlock.h>
31 #include <linux/list.h>
32 #include <linux/bitops.h>
33 #include <net/mac80211.h>
35 #include "wl1271_conf.h"
37 #define DRIVER_NAME "wl1271"
38 #define DRIVER_PREFIX DRIVER_NAME ": "
45 DEBUG_MAILBOX = BIT(3),
46 DEBUG_NETLINK = BIT(4),
53 DEBUG_MAC80211 = BIT(11),
59 #define DEBUG_LEVEL (DEBUG_NONE)
61 #define DEBUG_DUMP_LIMIT 1024
63 #define wl1271_error(fmt, arg...) \
64 printk(KERN_ERR DRIVER_PREFIX "ERROR " fmt "\n", ##arg)
66 #define wl1271_warning(fmt, arg...) \
67 printk(KERN_WARNING DRIVER_PREFIX "WARNING " fmt "\n", ##arg)
69 #define wl1271_notice(fmt, arg...) \
70 printk(KERN_INFO DRIVER_PREFIX fmt "\n", ##arg)
72 #define wl1271_info(fmt, arg...) \
73 printk(KERN_DEBUG DRIVER_PREFIX fmt "\n", ##arg)
75 #define wl1271_debug(level, fmt, arg...) \
77 if (level & DEBUG_LEVEL) \
78 printk(KERN_DEBUG DRIVER_PREFIX fmt "\n", ##arg); \
81 #define wl1271_dump(level, prefix, buf, len) \
83 if (level & DEBUG_LEVEL) \
84 print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
85 DUMP_PREFIX_OFFSET, 16, 1, \
87 min_t(size_t, len, DEBUG_DUMP_LIMIT), \
91 #define wl1271_dump_ascii(level, prefix, buf, len) \
93 if (level & DEBUG_LEVEL) \
94 print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
95 DUMP_PREFIX_OFFSET, 16, 1, \
97 min_t(size_t, len, DEBUG_DUMP_LIMIT), \
101 #define WL1271_DEFAULT_RX_CONFIG (CFG_UNI_FILTER_EN | \
102 CFG_BSSID_FILTER_EN | \
105 #define WL1271_DEFAULT_RX_FILTER (CFG_RX_RCTS_ACK | CFG_RX_PRSP_EN | \
106 CFG_RX_MGMT_EN | CFG_RX_DATA_EN | \
107 CFG_RX_CTL_EN | CFG_RX_BCN_EN | \
108 CFG_RX_AUTH_EN | CFG_RX_ASSOC_EN)
110 #define WL1271_FW_NAME "wl1271-fw.bin"
111 #define WL1271_NVS_NAME "wl1271-nvs.bin"
112 #define WL1271_NVS_LEN 468
115 * Enable/disable 802.11a support for WL1273
117 #undef WL1271_80211A_ENABLED
120 * FIXME: for the wl1271, a busy word count of 1 here will result in a more
121 * optimal SPI interface. There is some SPI bug however, causing RXS time outs
122 * with this mode occasionally on boot, so lets have three for now. A value of
123 * three should make sure, that the chipset will always be ready, though this
124 * will impact throughput and latencies slightly.
126 #define WL1271_BUSY_WORD_CNT 3
127 #define WL1271_BUSY_WORD_LEN (WL1271_BUSY_WORD_CNT * sizeof(u32))
129 #define WL1271_ELP_HW_STATE_ASLEEP 0
130 #define WL1271_ELP_HW_STATE_IRQ 1
132 #define WL1271_DEFAULT_BEACON_INT 100
133 #define WL1271_DEFAULT_DTIM_PERIOD 1
135 #define ACX_TX_DESCRIPTORS 32
143 enum wl1271_partition_type {
151 struct wl1271_partition {
156 struct wl1271_partition_set {
157 struct wl1271_partition mem;
158 struct wl1271_partition reg;
159 struct wl1271_partition mem2;
160 struct wl1271_partition mem3;
165 /* FIXME: I'm not sure about this structure name */
171 struct wl1271_stats {
172 struct acx_statistics *fw_stats;
173 unsigned long fw_stats_update;
175 unsigned int retry_count;
176 unsigned int excessive_retries;
179 struct wl1271_debugfs {
180 struct dentry *rootdir;
181 struct dentry *fw_statistics;
183 struct dentry *tx_internal_desc_overflow;
185 struct dentry *rx_out_of_mem;
186 struct dentry *rx_hdr_overflow;
187 struct dentry *rx_hw_stuck;
188 struct dentry *rx_dropped;
189 struct dentry *rx_fcs_err;
190 struct dentry *rx_xfr_hint_trig;
191 struct dentry *rx_path_reset;
192 struct dentry *rx_reset_counter;
194 struct dentry *dma_rx_requested;
195 struct dentry *dma_rx_errors;
196 struct dentry *dma_tx_requested;
197 struct dentry *dma_tx_errors;
199 struct dentry *isr_cmd_cmplt;
200 struct dentry *isr_fiqs;
201 struct dentry *isr_rx_headers;
202 struct dentry *isr_rx_mem_overflow;
203 struct dentry *isr_rx_rdys;
204 struct dentry *isr_irqs;
205 struct dentry *isr_tx_procs;
206 struct dentry *isr_decrypt_done;
207 struct dentry *isr_dma0_done;
208 struct dentry *isr_dma1_done;
209 struct dentry *isr_tx_exch_complete;
210 struct dentry *isr_commands;
211 struct dentry *isr_rx_procs;
212 struct dentry *isr_hw_pm_mode_changes;
213 struct dentry *isr_host_acknowledges;
214 struct dentry *isr_pci_pm;
215 struct dentry *isr_wakeups;
216 struct dentry *isr_low_rssi;
218 struct dentry *wep_addr_key_count;
219 struct dentry *wep_default_key_count;
220 /* skipping wep.reserved */
221 struct dentry *wep_key_not_found;
222 struct dentry *wep_decrypt_fail;
223 struct dentry *wep_packets;
224 struct dentry *wep_interrupt;
226 struct dentry *pwr_ps_enter;
227 struct dentry *pwr_elp_enter;
228 struct dentry *pwr_missing_bcns;
229 struct dentry *pwr_wake_on_host;
230 struct dentry *pwr_wake_on_timer_exp;
231 struct dentry *pwr_tx_with_ps;
232 struct dentry *pwr_tx_without_ps;
233 struct dentry *pwr_rcvd_beacons;
234 struct dentry *pwr_power_save_off;
235 struct dentry *pwr_enable_ps;
236 struct dentry *pwr_disable_ps;
237 struct dentry *pwr_fix_tsf_ps;
238 /* skipping cont_miss_bcns_spread for now */
239 struct dentry *pwr_rcvd_awake_beacons;
241 struct dentry *mic_rx_pkts;
242 struct dentry *mic_calc_failure;
244 struct dentry *aes_encrypt_fail;
245 struct dentry *aes_decrypt_fail;
246 struct dentry *aes_encrypt_packets;
247 struct dentry *aes_decrypt_packets;
248 struct dentry *aes_encrypt_interrupt;
249 struct dentry *aes_decrypt_interrupt;
251 struct dentry *event_heart_beat;
252 struct dentry *event_calibration;
253 struct dentry *event_rx_mismatch;
254 struct dentry *event_rx_mem_empty;
255 struct dentry *event_rx_pool;
256 struct dentry *event_oom_late;
257 struct dentry *event_phy_transmit_error;
258 struct dentry *event_tx_stuck;
260 struct dentry *ps_pspoll_timeouts;
261 struct dentry *ps_upsd_timeouts;
262 struct dentry *ps_upsd_max_sptime;
263 struct dentry *ps_upsd_max_apturn;
264 struct dentry *ps_pspoll_max_apturn;
265 struct dentry *ps_pspoll_utilization;
266 struct dentry *ps_upsd_utilization;
268 struct dentry *rxpipe_rx_prep_beacon_drop;
269 struct dentry *rxpipe_descr_host_int_trig_rx_data;
270 struct dentry *rxpipe_beacon_buffer_thres_host_int_trig_rx_data;
271 struct dentry *rxpipe_missed_beacon_host_int_trig_rx_data;
272 struct dentry *rxpipe_tx_xfr_host_int_trig_rx_data;
274 struct dentry *tx_queue_len;
276 struct dentry *retry_count;
277 struct dentry *excessive_retries;
278 struct dentry *gpio_power;
281 #define NUM_TX_QUEUES 4
282 #define NUM_RX_PKT_DESC 8
284 /* FW status registers */
285 struct wl1271_fw_status {
290 u8 tx_results_counter;
291 __le32 rx_pkt_descs[NUM_RX_PKT_DESC];
292 __le32 tx_released_blks[NUM_TX_QUEUES];
295 } __attribute__ ((packed));
297 struct wl1271_rx_mem_pool_addr {
304 u8 ssid[IW_ESSID_MAX_SIZE+1];
312 struct ieee80211_hw *hw;
313 bool mac80211_registered;
315 struct spi_device *spi;
317 void (*set_power)(bool enable);
322 enum wl1271_state state;
325 #define WL1271_FLAG_STA_RATES_CHANGED (0)
326 #define WL1271_FLAG_STA_ASSOCIATED (1)
327 #define WL1271_FLAG_JOINED (2)
328 #define WL1271_FLAG_GPIO_POWER (3)
329 #define WL1271_FLAG_TX_QUEUE_STOPPED (4)
330 #define WL1271_FLAG_SCANNING (5)
331 #define WL1271_FLAG_IN_ELP (6)
332 #define WL1271_FLAG_PSM (7)
333 #define WL1271_FLAG_PSM_REQUESTED (8)
336 struct wl1271_partition_set part;
338 struct wl1271_chip chip;
349 u8 mac_addr[ETH_ALEN];
351 u8 ssid[IW_ESSID_MAX_SIZE + 1];
355 struct wl1271_acx_mem_map *target_mem_map;
357 /* Accounting for allocated / available TX blocks on HW */
358 u32 tx_blocks_freed[NUM_TX_QUEUES];
359 u32 tx_blocks_available;
362 /* Transmitted TX packets counter for chipset interface */
363 int tx_packets_count;
365 /* Time-offset between host and chipset clocks */
368 /* Session counter for the chipset */
371 /* Frames scheduled for transmission, not handled yet */
372 struct sk_buff_head tx_queue;
374 struct work_struct tx_work;
376 /* Pending TX frames */
377 struct sk_buff *tx_frames[ACX_TX_DESCRIPTORS];
379 /* Security sequence number counters */
380 u8 tx_security_last_seq;
381 u16 tx_security_seq_16;
382 u32 tx_security_seq_32;
387 /* Rx memory pool address */
388 struct wl1271_rx_mem_pool_addr rx_mem_pool_addr;
390 /* The target interrupt mask */
391 struct work_struct irq_work;
393 /* The mbox event mask */
396 /* Mailbox pointers */
399 /* Are we currently scanning */
400 struct wl1271_scan scan;
402 /* Our association ID */
405 /* currently configured rate set */
410 /* The current band */
411 enum ieee80211_band band;
413 /* Default key (for WEP) */
416 unsigned int rx_config;
417 unsigned int rx_filter;
419 struct completion *elp_compl;
420 struct delayed_work elp_work;
422 /* retry counter for PSM entries */
428 struct wl1271_stats stats;
429 struct wl1271_debugfs debugfs;
433 u32 buffer_busyword[WL1271_BUSY_WORD_CNT];
435 struct wl1271_fw_status *fw_status;
436 struct wl1271_tx_hw_res_if *tx_res_if;
438 struct ieee80211_vif *vif;
440 /* Current chipset configuration */
441 struct conf_drv_settings conf;
443 struct list_head list;
446 int wl1271_plt_start(struct wl1271 *wl);
447 int wl1271_plt_stop(struct wl1271 *wl);
449 #define JOIN_TIMEOUT 5000 /* 5000 milliseconds to join */
451 #define SESSION_COUNTER_MAX 7 /* maximum value for the session counter */
453 #define WL1271_DEFAULT_POWER_LEVEL 0
455 #define WL1271_TX_QUEUE_MAX_LENGTH 20
457 /* WL1271 needs a 200ms sleep after power on, and a 20ms sleep before power
458 on in case is has been shut down shortly before */
459 #define WL1271_PRE_POWER_ON_SLEEP 20 /* in miliseconds */
460 #define WL1271_POWER_ON_SLEEP 200 /* in miliseconds */
462 static inline bool wl1271_11a_enabled(void)
464 #ifdef WL1271_80211A_ENABLED