2 Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
3 <http://rt2x00.serialmonkey.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 Abstract: rt2400pci device specific routines.
24 Supported chipsets: RT2460.
28 * Set enviroment defines for rt2x00.h
30 #define DRV_NAME "rt2400pci"
32 #include <linux/delay.h>
33 #include <linux/etherdevice.h>
34 #include <linux/init.h>
35 #include <linux/kernel.h>
36 #include <linux/module.h>
37 #include <linux/pci.h>
38 #include <linux/eeprom_93cx6.h>
41 #include "rt2x00pci.h"
42 #include "rt2400pci.h"
46 * All access to the CSR registers will go through the methods
47 * rt2x00pci_register_read and rt2x00pci_register_write.
48 * BBP and RF register require indirect register access,
49 * and use the CSR registers BBPCSR and RFCSR to achieve this.
50 * These indirect registers work with busy bits,
51 * and we will try maximal REGISTER_BUSY_COUNT times to access
52 * the register while taking a REGISTER_BUSY_DELAY us delay
53 * between each attampt. When the busy bit is still set at that time,
54 * the access attempt is considered to have failed,
55 * and we will print an error.
57 static u32 rt2400pci_bbp_check(const struct rt2x00_dev *rt2x00dev)
62 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
63 rt2x00pci_register_read(rt2x00dev, BBPCSR, ®);
64 if (!rt2x00_get_field32(reg, BBPCSR_BUSY))
66 udelay(REGISTER_BUSY_DELAY);
72 static void rt2400pci_bbp_write(const struct rt2x00_dev *rt2x00dev,
73 const unsigned int word, const u8 value)
78 * Wait until the BBP becomes ready.
80 reg = rt2400pci_bbp_check(rt2x00dev);
81 if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
82 ERROR(rt2x00dev, "BBPCSR register busy. Write failed.\n");
87 * Write the data into the BBP.
90 rt2x00_set_field32(®, BBPCSR_VALUE, value);
91 rt2x00_set_field32(®, BBPCSR_REGNUM, word);
92 rt2x00_set_field32(®, BBPCSR_BUSY, 1);
93 rt2x00_set_field32(®, BBPCSR_WRITE_CONTROL, 1);
95 rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
98 static void rt2400pci_bbp_read(const struct rt2x00_dev *rt2x00dev,
99 const unsigned int word, u8 *value)
104 * Wait until the BBP becomes ready.
106 reg = rt2400pci_bbp_check(rt2x00dev);
107 if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
108 ERROR(rt2x00dev, "BBPCSR register busy. Read failed.\n");
113 * Write the request into the BBP.
116 rt2x00_set_field32(®, BBPCSR_REGNUM, word);
117 rt2x00_set_field32(®, BBPCSR_BUSY, 1);
118 rt2x00_set_field32(®, BBPCSR_WRITE_CONTROL, 0);
120 rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
123 * Wait until the BBP becomes ready.
125 reg = rt2400pci_bbp_check(rt2x00dev);
126 if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
127 ERROR(rt2x00dev, "BBPCSR register busy. Read failed.\n");
132 *value = rt2x00_get_field32(reg, BBPCSR_VALUE);
135 static void rt2400pci_rf_write(const struct rt2x00_dev *rt2x00dev,
136 const unsigned int word, const u32 value)
144 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
145 rt2x00pci_register_read(rt2x00dev, RFCSR, ®);
146 if (!rt2x00_get_field32(reg, RFCSR_BUSY))
148 udelay(REGISTER_BUSY_DELAY);
151 ERROR(rt2x00dev, "RFCSR register busy. Write failed.\n");
156 rt2x00_set_field32(®, RFCSR_VALUE, value);
157 rt2x00_set_field32(®, RFCSR_NUMBER_OF_BITS, 20);
158 rt2x00_set_field32(®, RFCSR_IF_SELECT, 0);
159 rt2x00_set_field32(®, RFCSR_BUSY, 1);
161 rt2x00pci_register_write(rt2x00dev, RFCSR, reg);
162 rt2x00_rf_write(rt2x00dev, word, value);
165 static void rt2400pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
167 struct rt2x00_dev *rt2x00dev = eeprom->data;
170 rt2x00pci_register_read(rt2x00dev, CSR21, ®);
172 eeprom->reg_data_in = !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_IN);
173 eeprom->reg_data_out = !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_OUT);
174 eeprom->reg_data_clock =
175 !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_CLOCK);
176 eeprom->reg_chip_select =
177 !!rt2x00_get_field32(reg, CSR21_EEPROM_CHIP_SELECT);
180 static void rt2400pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
182 struct rt2x00_dev *rt2x00dev = eeprom->data;
185 rt2x00_set_field32(®, CSR21_EEPROM_DATA_IN, !!eeprom->reg_data_in);
186 rt2x00_set_field32(®, CSR21_EEPROM_DATA_OUT, !!eeprom->reg_data_out);
187 rt2x00_set_field32(®, CSR21_EEPROM_DATA_CLOCK,
188 !!eeprom->reg_data_clock);
189 rt2x00_set_field32(®, CSR21_EEPROM_CHIP_SELECT,
190 !!eeprom->reg_chip_select);
192 rt2x00pci_register_write(rt2x00dev, CSR21, reg);
195 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
196 #define CSR_OFFSET(__word) ( CSR_REG_BASE + ((__word) * sizeof(u32)) )
198 static void rt2400pci_read_csr(const struct rt2x00_dev *rt2x00dev,
199 const unsigned int word, u32 *data)
201 rt2x00pci_register_read(rt2x00dev, CSR_OFFSET(word), data);
204 static void rt2400pci_write_csr(const struct rt2x00_dev *rt2x00dev,
205 const unsigned int word, u32 data)
207 rt2x00pci_register_write(rt2x00dev, CSR_OFFSET(word), data);
210 static const struct rt2x00debug rt2400pci_rt2x00debug = {
211 .owner = THIS_MODULE,
213 .read = rt2400pci_read_csr,
214 .write = rt2400pci_write_csr,
215 .word_size = sizeof(u32),
216 .word_count = CSR_REG_SIZE / sizeof(u32),
219 .read = rt2x00_eeprom_read,
220 .write = rt2x00_eeprom_write,
221 .word_size = sizeof(u16),
222 .word_count = EEPROM_SIZE / sizeof(u16),
225 .read = rt2400pci_bbp_read,
226 .write = rt2400pci_bbp_write,
227 .word_size = sizeof(u8),
228 .word_count = BBP_SIZE / sizeof(u8),
231 .read = rt2x00_rf_read,
232 .write = rt2400pci_rf_write,
233 .word_size = sizeof(u32),
234 .word_count = RF_SIZE / sizeof(u32),
237 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
239 #ifdef CONFIG_RT2400PCI_RFKILL
240 static int rt2400pci_rfkill_poll(struct rt2x00_dev *rt2x00dev)
244 rt2x00pci_register_read(rt2x00dev, GPIOCSR, ®);
245 return rt2x00_get_field32(reg, GPIOCSR_BIT0);
248 #define rt2400pci_rfkill_poll NULL
249 #endif /* CONFIG_RT2400PCI_RFKILL */
252 * Configuration handlers.
254 static void rt2400pci_config_mac_addr(struct rt2x00_dev *rt2x00dev,
257 rt2x00pci_register_multiwrite(rt2x00dev, CSR3, mac,
258 (2 * sizeof(__le32)));
261 static void rt2400pci_config_bssid(struct rt2x00_dev *rt2x00dev,
264 rt2x00pci_register_multiwrite(rt2x00dev, CSR5, bssid,
265 (2 * sizeof(__le32)));
268 static void rt2400pci_config_type(struct rt2x00_dev *rt2x00dev, const int type,
273 rt2x00pci_register_write(rt2x00dev, CSR14, 0);
276 * Enable beacon config
278 rt2x00pci_register_read(rt2x00dev, BCNCSR1, ®);
279 rt2x00_set_field32(®, BCNCSR1_PRELOAD,
280 PREAMBLE + get_duration(IEEE80211_HEADER, 20));
281 rt2x00pci_register_write(rt2x00dev, BCNCSR1, reg);
284 * Enable synchronisation.
286 rt2x00pci_register_read(rt2x00dev, CSR14, ®);
287 rt2x00_set_field32(®, CSR14_TSF_COUNT, 1);
288 rt2x00_set_field32(®, CSR14_TBCN, 1);
289 rt2x00_set_field32(®, CSR14_BEACON_GEN, 0);
290 rt2x00_set_field32(®, CSR14_TSF_SYNC, tsf_sync);
291 rt2x00pci_register_write(rt2x00dev, CSR14, reg);
294 static void rt2400pci_config_preamble(struct rt2x00_dev *rt2x00dev,
295 const int short_preamble,
296 const int ack_timeout,
297 const int ack_consume_time)
303 * When short preamble is enabled, we should set bit 0x08
305 preamble_mask = short_preamble << 3;
307 rt2x00pci_register_read(rt2x00dev, TXCSR1, ®);
308 rt2x00_set_field32(®, TXCSR1_ACK_TIMEOUT, ack_timeout);
309 rt2x00_set_field32(®, TXCSR1_ACK_CONSUME_TIME, ack_consume_time);
310 rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
312 rt2x00pci_register_read(rt2x00dev, ARCSR2, ®);
313 rt2x00_set_field32(®, ARCSR2_SIGNAL, 0x00 | preamble_mask);
314 rt2x00_set_field32(®, ARCSR2_SERVICE, 0x04);
315 rt2x00_set_field32(®, ARCSR2_LENGTH, get_duration(ACK_SIZE, 10));
316 rt2x00pci_register_write(rt2x00dev, ARCSR2, reg);
318 rt2x00pci_register_read(rt2x00dev, ARCSR3, ®);
319 rt2x00_set_field32(®, ARCSR3_SIGNAL, 0x01 | preamble_mask);
320 rt2x00_set_field32(®, ARCSR3_SERVICE, 0x04);
321 rt2x00_set_field32(®, ARCSR2_LENGTH, get_duration(ACK_SIZE, 20));
322 rt2x00pci_register_write(rt2x00dev, ARCSR3, reg);
324 rt2x00pci_register_read(rt2x00dev, ARCSR4, ®);
325 rt2x00_set_field32(®, ARCSR4_SIGNAL, 0x02 | preamble_mask);
326 rt2x00_set_field32(®, ARCSR4_SERVICE, 0x04);
327 rt2x00_set_field32(®, ARCSR2_LENGTH, get_duration(ACK_SIZE, 55));
328 rt2x00pci_register_write(rt2x00dev, ARCSR4, reg);
330 rt2x00pci_register_read(rt2x00dev, ARCSR5, ®);
331 rt2x00_set_field32(®, ARCSR5_SIGNAL, 0x03 | preamble_mask);
332 rt2x00_set_field32(®, ARCSR5_SERVICE, 0x84);
333 rt2x00_set_field32(®, ARCSR2_LENGTH, get_duration(ACK_SIZE, 110));
334 rt2x00pci_register_write(rt2x00dev, ARCSR5, reg);
337 static void rt2400pci_config_phymode(struct rt2x00_dev *rt2x00dev,
338 const int basic_rate_mask)
340 rt2x00pci_register_write(rt2x00dev, ARCSR1, basic_rate_mask);
343 static void rt2400pci_config_channel(struct rt2x00_dev *rt2x00dev,
344 struct rf_channel *rf)
347 * Switch on tuning bits.
349 rt2x00_set_field32(&rf->rf1, RF1_TUNER, 1);
350 rt2x00_set_field32(&rf->rf3, RF3_TUNER, 1);
352 rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
353 rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
354 rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
357 * RF2420 chipset don't need any additional actions.
359 if (rt2x00_rf(&rt2x00dev->chip, RF2420))
363 * For the RT2421 chipsets we need to write an invalid
364 * reference clock rate to activate auto_tune.
365 * After that we set the value back to the correct channel.
367 rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
368 rt2400pci_rf_write(rt2x00dev, 2, 0x000c2a32);
369 rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
373 rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
374 rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
375 rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
380 * Switch off tuning bits.
382 rt2x00_set_field32(&rf->rf1, RF1_TUNER, 0);
383 rt2x00_set_field32(&rf->rf3, RF3_TUNER, 0);
385 rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
386 rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
389 * Clear false CRC during channel switch.
391 rt2x00pci_register_read(rt2x00dev, CNT0, &rf->rf1);
394 static void rt2400pci_config_txpower(struct rt2x00_dev *rt2x00dev, int txpower)
396 rt2400pci_bbp_write(rt2x00dev, 3, TXPOWER_TO_DEV(txpower));
399 static void rt2400pci_config_antenna(struct rt2x00_dev *rt2x00dev,
400 int antenna_tx, int antenna_rx)
405 rt2400pci_bbp_read(rt2x00dev, 4, &r4);
406 rt2400pci_bbp_read(rt2x00dev, 1, &r1);
409 * Configure the TX antenna.
411 switch (antenna_tx) {
412 case ANTENNA_SW_DIVERSITY:
413 case ANTENNA_HW_DIVERSITY:
414 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 1);
417 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 0);
420 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 2);
425 * Configure the RX antenna.
427 switch (antenna_rx) {
428 case ANTENNA_SW_DIVERSITY:
429 case ANTENNA_HW_DIVERSITY:
430 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
433 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 0);
436 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 2);
440 rt2400pci_bbp_write(rt2x00dev, 4, r4);
441 rt2400pci_bbp_write(rt2x00dev, 1, r1);
444 static void rt2400pci_config_duration(struct rt2x00_dev *rt2x00dev,
445 struct rt2x00lib_conf *libconf)
449 rt2x00pci_register_read(rt2x00dev, CSR11, ®);
450 rt2x00_set_field32(®, CSR11_SLOT_TIME, libconf->slot_time);
451 rt2x00pci_register_write(rt2x00dev, CSR11, reg);
453 rt2x00pci_register_read(rt2x00dev, CSR18, ®);
454 rt2x00_set_field32(®, CSR18_SIFS, libconf->sifs);
455 rt2x00_set_field32(®, CSR18_PIFS, libconf->pifs);
456 rt2x00pci_register_write(rt2x00dev, CSR18, reg);
458 rt2x00pci_register_read(rt2x00dev, CSR19, ®);
459 rt2x00_set_field32(®, CSR19_DIFS, libconf->difs);
460 rt2x00_set_field32(®, CSR19_EIFS, libconf->eifs);
461 rt2x00pci_register_write(rt2x00dev, CSR19, reg);
463 rt2x00pci_register_read(rt2x00dev, TXCSR1, ®);
464 rt2x00_set_field32(®, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
465 rt2x00_set_field32(®, TXCSR1_AUTORESPONDER, 1);
466 rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
468 rt2x00pci_register_read(rt2x00dev, CSR12, ®);
469 rt2x00_set_field32(®, CSR12_BEACON_INTERVAL,
470 libconf->conf->beacon_int * 16);
471 rt2x00_set_field32(®, CSR12_CFP_MAX_DURATION,
472 libconf->conf->beacon_int * 16);
473 rt2x00pci_register_write(rt2x00dev, CSR12, reg);
476 static void rt2400pci_config(struct rt2x00_dev *rt2x00dev,
477 const unsigned int flags,
478 struct rt2x00lib_conf *libconf)
480 if (flags & CONFIG_UPDATE_PHYMODE)
481 rt2400pci_config_phymode(rt2x00dev, libconf->basic_rates);
482 if (flags & CONFIG_UPDATE_CHANNEL)
483 rt2400pci_config_channel(rt2x00dev, &libconf->rf);
484 if (flags & CONFIG_UPDATE_TXPOWER)
485 rt2400pci_config_txpower(rt2x00dev,
486 libconf->conf->power_level);
487 if (flags & CONFIG_UPDATE_ANTENNA)
488 rt2400pci_config_antenna(rt2x00dev,
489 libconf->conf->antenna_sel_tx,
490 libconf->conf->antenna_sel_rx);
491 if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
492 rt2400pci_config_duration(rt2x00dev, libconf);
495 static void rt2400pci_config_cw(struct rt2x00_dev *rt2x00dev,
496 struct ieee80211_tx_queue_params *params)
500 rt2x00pci_register_read(rt2x00dev, CSR11, ®);
501 rt2x00_set_field32(®, CSR11_CWMIN, params->cw_min);
502 rt2x00_set_field32(®, CSR11_CWMAX, params->cw_max);
503 rt2x00pci_register_write(rt2x00dev, CSR11, reg);
509 static void rt2400pci_enable_led(struct rt2x00_dev *rt2x00dev)
513 rt2x00pci_register_read(rt2x00dev, LEDCSR, ®);
515 rt2x00_set_field32(®, LEDCSR_ON_PERIOD, 70);
516 rt2x00_set_field32(®, LEDCSR_OFF_PERIOD, 30);
518 if (rt2x00dev->led_mode == LED_MODE_TXRX_ACTIVITY) {
519 rt2x00_set_field32(®, LEDCSR_LINK, 1);
520 rt2x00_set_field32(®, LEDCSR_ACTIVITY, 0);
521 } else if (rt2x00dev->led_mode == LED_MODE_ASUS) {
522 rt2x00_set_field32(®, LEDCSR_LINK, 0);
523 rt2x00_set_field32(®, LEDCSR_ACTIVITY, 1);
525 rt2x00_set_field32(®, LEDCSR_LINK, 1);
526 rt2x00_set_field32(®, LEDCSR_ACTIVITY, 1);
529 rt2x00pci_register_write(rt2x00dev, LEDCSR, reg);
532 static void rt2400pci_disable_led(struct rt2x00_dev *rt2x00dev)
536 rt2x00pci_register_read(rt2x00dev, LEDCSR, ®);
537 rt2x00_set_field32(®, LEDCSR_LINK, 0);
538 rt2x00_set_field32(®, LEDCSR_ACTIVITY, 0);
539 rt2x00pci_register_write(rt2x00dev, LEDCSR, reg);
545 static void rt2400pci_link_stats(struct rt2x00_dev *rt2x00dev,
546 struct link_qual *qual)
552 * Update FCS error count from register.
554 rt2x00pci_register_read(rt2x00dev, CNT0, ®);
555 qual->rx_failed = rt2x00_get_field32(reg, CNT0_FCS_ERROR);
558 * Update False CCA count from register.
560 rt2400pci_bbp_read(rt2x00dev, 39, &bbp);
561 qual->false_cca = bbp;
564 static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev)
566 rt2400pci_bbp_write(rt2x00dev, 13, 0x08);
567 rt2x00dev->link.vgc_level = 0x08;
570 static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev)
575 * The link tuner should not run longer then 60 seconds,
576 * and should run once every 2 seconds.
578 if (rt2x00dev->link.count > 60 || !(rt2x00dev->link.count & 1))
582 * Base r13 link tuning on the false cca count.
584 rt2400pci_bbp_read(rt2x00dev, 13, ®);
586 if (rt2x00dev->link.qual.false_cca > 512 && reg < 0x20) {
587 rt2400pci_bbp_write(rt2x00dev, 13, ++reg);
588 rt2x00dev->link.vgc_level = reg;
589 } else if (rt2x00dev->link.qual.false_cca < 100 && reg > 0x08) {
590 rt2400pci_bbp_write(rt2x00dev, 13, --reg);
591 rt2x00dev->link.vgc_level = reg;
596 * Initialization functions.
598 static void rt2400pci_init_rxring(struct rt2x00_dev *rt2x00dev)
600 struct data_ring *ring = rt2x00dev->rx;
601 struct data_desc *rxd;
605 memset(ring->data_addr, 0x00, rt2x00_get_ring_size(ring));
607 for (i = 0; i < ring->stats.limit; i++) {
608 rxd = ring->entry[i].priv;
610 rt2x00_desc_read(rxd, 2, &word);
611 rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH,
613 rt2x00_desc_write(rxd, 2, word);
615 rt2x00_desc_read(rxd, 1, &word);
616 rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS,
617 ring->entry[i].data_dma);
618 rt2x00_desc_write(rxd, 1, word);
620 rt2x00_desc_read(rxd, 0, &word);
621 rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
622 rt2x00_desc_write(rxd, 0, word);
625 rt2x00_ring_index_clear(rt2x00dev->rx);
628 static void rt2400pci_init_txring(struct rt2x00_dev *rt2x00dev, const int queue)
630 struct data_ring *ring = rt2x00lib_get_ring(rt2x00dev, queue);
631 struct data_desc *txd;
635 memset(ring->data_addr, 0x00, rt2x00_get_ring_size(ring));
637 for (i = 0; i < ring->stats.limit; i++) {
638 txd = ring->entry[i].priv;
640 rt2x00_desc_read(txd, 1, &word);
641 rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS,
642 ring->entry[i].data_dma);
643 rt2x00_desc_write(txd, 1, word);
645 rt2x00_desc_read(txd, 2, &word);
646 rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH,
648 rt2x00_desc_write(txd, 2, word);
650 rt2x00_desc_read(txd, 0, &word);
651 rt2x00_set_field32(&word, TXD_W0_VALID, 0);
652 rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
653 rt2x00_desc_write(txd, 0, word);
656 rt2x00_ring_index_clear(ring);
659 static int rt2400pci_init_rings(struct rt2x00_dev *rt2x00dev)
666 rt2400pci_init_rxring(rt2x00dev);
667 rt2400pci_init_txring(rt2x00dev, IEEE80211_TX_QUEUE_DATA0);
668 rt2400pci_init_txring(rt2x00dev, IEEE80211_TX_QUEUE_DATA1);
669 rt2400pci_init_txring(rt2x00dev, IEEE80211_TX_QUEUE_AFTER_BEACON);
670 rt2400pci_init_txring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
673 * Initialize registers.
675 rt2x00pci_register_read(rt2x00dev, TXCSR2, ®);
676 rt2x00_set_field32(®, TXCSR2_TXD_SIZE,
677 rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].desc_size);
678 rt2x00_set_field32(®, TXCSR2_NUM_TXD,
679 rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].stats.limit);
680 rt2x00_set_field32(®, TXCSR2_NUM_ATIM,
681 rt2x00dev->bcn[1].stats.limit);
682 rt2x00_set_field32(®, TXCSR2_NUM_PRIO,
683 rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].stats.limit);
684 rt2x00pci_register_write(rt2x00dev, TXCSR2, reg);
686 rt2x00pci_register_read(rt2x00dev, TXCSR3, ®);
687 rt2x00_set_field32(®, TXCSR3_TX_RING_REGISTER,
688 rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].data_dma);
689 rt2x00pci_register_write(rt2x00dev, TXCSR3, reg);
691 rt2x00pci_register_read(rt2x00dev, TXCSR5, ®);
692 rt2x00_set_field32(®, TXCSR5_PRIO_RING_REGISTER,
693 rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].data_dma);
694 rt2x00pci_register_write(rt2x00dev, TXCSR5, reg);
696 rt2x00pci_register_read(rt2x00dev, TXCSR4, ®);
697 rt2x00_set_field32(®, TXCSR4_ATIM_RING_REGISTER,
698 rt2x00dev->bcn[1].data_dma);
699 rt2x00pci_register_write(rt2x00dev, TXCSR4, reg);
701 rt2x00pci_register_read(rt2x00dev, TXCSR6, ®);
702 rt2x00_set_field32(®, TXCSR6_BEACON_RING_REGISTER,
703 rt2x00dev->bcn[0].data_dma);
704 rt2x00pci_register_write(rt2x00dev, TXCSR6, reg);
706 rt2x00pci_register_read(rt2x00dev, RXCSR1, ®);
707 rt2x00_set_field32(®, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size);
708 rt2x00_set_field32(®, RXCSR1_NUM_RXD, rt2x00dev->rx->stats.limit);
709 rt2x00pci_register_write(rt2x00dev, RXCSR1, reg);
711 rt2x00pci_register_read(rt2x00dev, RXCSR2, ®);
712 rt2x00_set_field32(®, RXCSR2_RX_RING_REGISTER,
713 rt2x00dev->rx->data_dma);
714 rt2x00pci_register_write(rt2x00dev, RXCSR2, reg);
719 static int rt2400pci_init_registers(struct rt2x00_dev *rt2x00dev)
723 rt2x00pci_register_write(rt2x00dev, PSCSR0, 0x00020002);
724 rt2x00pci_register_write(rt2x00dev, PSCSR1, 0x00000002);
725 rt2x00pci_register_write(rt2x00dev, PSCSR2, 0x00023f20);
726 rt2x00pci_register_write(rt2x00dev, PSCSR3, 0x00000002);
728 rt2x00pci_register_read(rt2x00dev, TIMECSR, ®);
729 rt2x00_set_field32(®, TIMECSR_US_COUNT, 33);
730 rt2x00_set_field32(®, TIMECSR_US_64_COUNT, 63);
731 rt2x00_set_field32(®, TIMECSR_BEACON_EXPECT, 0);
732 rt2x00pci_register_write(rt2x00dev, TIMECSR, reg);
734 rt2x00pci_register_read(rt2x00dev, CSR9, ®);
735 rt2x00_set_field32(®, CSR9_MAX_FRAME_UNIT,
736 (rt2x00dev->rx->data_size / 128));
737 rt2x00pci_register_write(rt2x00dev, CSR9, reg);
739 rt2x00pci_register_write(rt2x00dev, CNT3, 0x3f080000);
741 rt2x00pci_register_read(rt2x00dev, ARCSR0, ®);
742 rt2x00_set_field32(®, ARCSR0_AR_BBP_DATA0, 133);
743 rt2x00_set_field32(®, ARCSR0_AR_BBP_ID0, 134);
744 rt2x00_set_field32(®, ARCSR0_AR_BBP_DATA1, 136);
745 rt2x00_set_field32(®, ARCSR0_AR_BBP_ID1, 135);
746 rt2x00pci_register_write(rt2x00dev, ARCSR0, reg);
748 rt2x00pci_register_read(rt2x00dev, RXCSR3, ®);
749 rt2x00_set_field32(®, RXCSR3_BBP_ID0, 3); /* Tx power.*/
750 rt2x00_set_field32(®, RXCSR3_BBP_ID0_VALID, 1);
751 rt2x00_set_field32(®, RXCSR3_BBP_ID1, 32); /* Signal */
752 rt2x00_set_field32(®, RXCSR3_BBP_ID1_VALID, 1);
753 rt2x00_set_field32(®, RXCSR3_BBP_ID2, 36); /* Rssi */
754 rt2x00_set_field32(®, RXCSR3_BBP_ID2_VALID, 1);
755 rt2x00pci_register_write(rt2x00dev, RXCSR3, reg);
757 rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100);
759 if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
762 rt2x00pci_register_write(rt2x00dev, MACCSR0, 0x00217223);
763 rt2x00pci_register_write(rt2x00dev, MACCSR1, 0x00235518);
765 rt2x00pci_register_read(rt2x00dev, MACCSR2, ®);
766 rt2x00_set_field32(®, MACCSR2_DELAY, 64);
767 rt2x00pci_register_write(rt2x00dev, MACCSR2, reg);
769 rt2x00pci_register_read(rt2x00dev, RALINKCSR, ®);
770 rt2x00_set_field32(®, RALINKCSR_AR_BBP_DATA0, 17);
771 rt2x00_set_field32(®, RALINKCSR_AR_BBP_ID0, 154);
772 rt2x00_set_field32(®, RALINKCSR_AR_BBP_DATA1, 0);
773 rt2x00_set_field32(®, RALINKCSR_AR_BBP_ID1, 154);
774 rt2x00pci_register_write(rt2x00dev, RALINKCSR, reg);
776 rt2x00pci_register_read(rt2x00dev, CSR1, ®);
777 rt2x00_set_field32(®, CSR1_SOFT_RESET, 1);
778 rt2x00_set_field32(®, CSR1_BBP_RESET, 0);
779 rt2x00_set_field32(®, CSR1_HOST_READY, 0);
780 rt2x00pci_register_write(rt2x00dev, CSR1, reg);
782 rt2x00pci_register_read(rt2x00dev, CSR1, ®);
783 rt2x00_set_field32(®, CSR1_SOFT_RESET, 0);
784 rt2x00_set_field32(®, CSR1_HOST_READY, 1);
785 rt2x00pci_register_write(rt2x00dev, CSR1, reg);
788 * We must clear the FCS and FIFO error count.
789 * These registers are cleared on read,
790 * so we may pass a useless variable to store the value.
792 rt2x00pci_register_read(rt2x00dev, CNT0, ®);
793 rt2x00pci_register_read(rt2x00dev, CNT4, ®);
798 static int rt2400pci_init_bbp(struct rt2x00_dev *rt2x00dev)
805 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
806 rt2400pci_bbp_read(rt2x00dev, 0, &value);
807 if ((value != 0xff) && (value != 0x00))
808 goto continue_csr_init;
809 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
810 udelay(REGISTER_BUSY_DELAY);
813 ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
817 rt2400pci_bbp_write(rt2x00dev, 1, 0x00);
818 rt2400pci_bbp_write(rt2x00dev, 3, 0x27);
819 rt2400pci_bbp_write(rt2x00dev, 4, 0x08);
820 rt2400pci_bbp_write(rt2x00dev, 10, 0x0f);
821 rt2400pci_bbp_write(rt2x00dev, 15, 0x72);
822 rt2400pci_bbp_write(rt2x00dev, 16, 0x74);
823 rt2400pci_bbp_write(rt2x00dev, 17, 0x20);
824 rt2400pci_bbp_write(rt2x00dev, 18, 0x72);
825 rt2400pci_bbp_write(rt2x00dev, 19, 0x0b);
826 rt2400pci_bbp_write(rt2x00dev, 20, 0x00);
827 rt2400pci_bbp_write(rt2x00dev, 28, 0x11);
828 rt2400pci_bbp_write(rt2x00dev, 29, 0x04);
829 rt2400pci_bbp_write(rt2x00dev, 30, 0x21);
830 rt2400pci_bbp_write(rt2x00dev, 31, 0x00);
832 DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
833 for (i = 0; i < EEPROM_BBP_SIZE; i++) {
834 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
836 if (eeprom != 0xffff && eeprom != 0x0000) {
837 reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
838 value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
839 DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
841 rt2400pci_bbp_write(rt2x00dev, reg_id, value);
844 DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
850 * Device state switch handlers.
852 static void rt2400pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
853 enum dev_state state)
857 rt2x00pci_register_read(rt2x00dev, RXCSR0, ®);
858 rt2x00_set_field32(®, RXCSR0_DISABLE_RX,
859 state == STATE_RADIO_RX_OFF);
860 rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
863 static void rt2400pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
864 enum dev_state state)
866 int mask = (state == STATE_RADIO_IRQ_OFF);
870 * When interrupts are being enabled, the interrupt registers
871 * should clear the register to assure a clean state.
873 if (state == STATE_RADIO_IRQ_ON) {
874 rt2x00pci_register_read(rt2x00dev, CSR7, ®);
875 rt2x00pci_register_write(rt2x00dev, CSR7, reg);
879 * Only toggle the interrupts bits we are going to use.
880 * Non-checked interrupt bits are disabled by default.
882 rt2x00pci_register_read(rt2x00dev, CSR8, ®);
883 rt2x00_set_field32(®, CSR8_TBCN_EXPIRE, mask);
884 rt2x00_set_field32(®, CSR8_TXDONE_TXRING, mask);
885 rt2x00_set_field32(®, CSR8_TXDONE_ATIMRING, mask);
886 rt2x00_set_field32(®, CSR8_TXDONE_PRIORING, mask);
887 rt2x00_set_field32(®, CSR8_RXDONE, mask);
888 rt2x00pci_register_write(rt2x00dev, CSR8, reg);
891 static int rt2400pci_enable_radio(struct rt2x00_dev *rt2x00dev)
894 * Initialize all registers.
896 if (rt2400pci_init_rings(rt2x00dev) ||
897 rt2400pci_init_registers(rt2x00dev) ||
898 rt2400pci_init_bbp(rt2x00dev)) {
899 ERROR(rt2x00dev, "Register initialization failed.\n");
906 rt2400pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_ON);
911 rt2400pci_enable_led(rt2x00dev);
916 static void rt2400pci_disable_radio(struct rt2x00_dev *rt2x00dev)
923 rt2400pci_disable_led(rt2x00dev);
925 rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0);
928 * Disable synchronisation.
930 rt2x00pci_register_write(rt2x00dev, CSR14, 0);
935 rt2x00pci_register_read(rt2x00dev, TXCSR0, ®);
936 rt2x00_set_field32(®, TXCSR0_ABORT, 1);
937 rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
940 * Disable interrupts.
942 rt2400pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_OFF);
945 static int rt2400pci_set_state(struct rt2x00_dev *rt2x00dev,
946 enum dev_state state)
954 put_to_sleep = (state != STATE_AWAKE);
956 rt2x00pci_register_read(rt2x00dev, PWRCSR1, ®);
957 rt2x00_set_field32(®, PWRCSR1_SET_STATE, 1);
958 rt2x00_set_field32(®, PWRCSR1_BBP_DESIRE_STATE, state);
959 rt2x00_set_field32(®, PWRCSR1_RF_DESIRE_STATE, state);
960 rt2x00_set_field32(®, PWRCSR1_PUT_TO_SLEEP, put_to_sleep);
961 rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
964 * Device is not guaranteed to be in the requested state yet.
965 * We must wait until the register indicates that the
966 * device has entered the correct state.
968 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
969 rt2x00pci_register_read(rt2x00dev, PWRCSR1, ®);
970 bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
971 rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
972 if (bbp_state == state && rf_state == state)
977 NOTICE(rt2x00dev, "Device failed to enter state %d, "
978 "current device state: bbp %d and rf %d.\n",
979 state, bbp_state, rf_state);
984 static int rt2400pci_set_device_state(struct rt2x00_dev *rt2x00dev,
985 enum dev_state state)
991 retval = rt2400pci_enable_radio(rt2x00dev);
993 case STATE_RADIO_OFF:
994 rt2400pci_disable_radio(rt2x00dev);
996 case STATE_RADIO_RX_ON:
997 case STATE_RADIO_RX_OFF:
998 rt2400pci_toggle_rx(rt2x00dev, state);
1000 case STATE_DEEP_SLEEP:
1004 retval = rt2400pci_set_state(rt2x00dev, state);
1015 * TX descriptor initialization
1017 static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1018 struct data_desc *txd,
1019 struct txdata_entry_desc *desc,
1020 struct ieee80211_hdr *ieee80211hdr,
1021 unsigned int length,
1022 struct ieee80211_tx_control *control)
1027 u32 length_high = 0;
1031 * The PLCP values should be treated as if they
1034 rt2x00_set_field32(&signal, BBPCSR_VALUE, desc->signal);
1035 rt2x00_set_field32(&signal, BBPCSR_REGNUM, 5);
1036 rt2x00_set_field32(&signal, BBPCSR_BUSY, 1);
1038 rt2x00_set_field32(&service, BBPCSR_VALUE, desc->service);
1039 rt2x00_set_field32(&service, BBPCSR_REGNUM, 6);
1040 rt2x00_set_field32(&service, BBPCSR_BUSY, 1);
1042 rt2x00_set_field32(&length_high, BBPCSR_VALUE, desc->length_high);
1043 rt2x00_set_field32(&length_high, BBPCSR_REGNUM, 7);
1044 rt2x00_set_field32(&length_high, BBPCSR_BUSY, 1);
1046 rt2x00_set_field32(&length_low, BBPCSR_VALUE, desc->length_low);
1047 rt2x00_set_field32(&length_low, BBPCSR_REGNUM, 8);
1048 rt2x00_set_field32(&length_low, BBPCSR_BUSY, 1);
1051 * Start writing the descriptor words.
1053 rt2x00_desc_read(txd, 2, &word);
1054 rt2x00_set_field32(&word, TXD_W2_DATABYTE_COUNT, length);
1055 rt2x00_desc_write(txd, 2, word);
1057 rt2x00_desc_read(txd, 3, &word);
1058 rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, signal);
1059 rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, service);
1060 rt2x00_desc_write(txd, 3, word);
1062 rt2x00_desc_read(txd, 4, &word);
1063 rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, length_low);
1064 rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, length_high);
1065 rt2x00_desc_write(txd, 4, word);
1067 rt2x00_desc_read(txd, 0, &word);
1068 rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 1);
1069 rt2x00_set_field32(&word, TXD_W0_VALID, 1);
1070 rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1071 test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1072 rt2x00_set_field32(&word, TXD_W0_ACK,
1073 !(control->flags & IEEE80211_TXCTL_NO_ACK));
1074 rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1075 test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1076 rt2x00_set_field32(&word, TXD_W0_RTS,
1077 test_bit(ENTRY_TXD_RTS_FRAME, &desc->flags));
1078 rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1079 rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
1081 IEEE80211_TXCTL_LONG_RETRY_LIMIT));
1082 rt2x00_desc_write(txd, 0, word);
1086 * TX data initialization
1088 static void rt2400pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1093 if (queue == IEEE80211_TX_QUEUE_BEACON) {
1094 rt2x00pci_register_read(rt2x00dev, CSR14, ®);
1095 if (!rt2x00_get_field32(reg, CSR14_BEACON_GEN)) {
1096 rt2x00_set_field32(®, CSR14_BEACON_GEN, 1);
1097 rt2x00pci_register_write(rt2x00dev, CSR14, reg);
1102 rt2x00pci_register_read(rt2x00dev, TXCSR0, ®);
1103 if (queue == IEEE80211_TX_QUEUE_DATA0)
1104 rt2x00_set_field32(®, TXCSR0_KICK_PRIO, 1);
1105 else if (queue == IEEE80211_TX_QUEUE_DATA1)
1106 rt2x00_set_field32(®, TXCSR0_KICK_TX, 1);
1107 else if (queue == IEEE80211_TX_QUEUE_AFTER_BEACON)
1108 rt2x00_set_field32(®, TXCSR0_KICK_ATIM, 1);
1109 rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
1113 * RX control handlers
1115 static void rt2400pci_fill_rxdone(struct data_entry *entry,
1116 struct rxdata_entry_desc *desc)
1118 struct data_desc *rxd = entry->priv;
1122 rt2x00_desc_read(rxd, 0, &word0);
1123 rt2x00_desc_read(rxd, 2, &word2);
1126 if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1127 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1128 if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1129 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1132 * Obtain the status about this packet.
1134 desc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL);
1135 desc->rssi = rt2x00_get_field32(word2, RXD_W2_RSSI) -
1136 entry->ring->rt2x00dev->rssi_offset;
1138 desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1142 * Interrupt functions.
1144 static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev, const int queue)
1146 struct data_ring *ring = rt2x00lib_get_ring(rt2x00dev, queue);
1147 struct data_entry *entry;
1148 struct data_desc *txd;
1153 while (!rt2x00_ring_empty(ring)) {
1154 entry = rt2x00_get_data_entry_done(ring);
1156 rt2x00_desc_read(txd, 0, &word);
1158 if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
1159 !rt2x00_get_field32(word, TXD_W0_VALID))
1163 * Obtain the status about this packet.
1165 tx_status = rt2x00_get_field32(word, TXD_W0_RESULT);
1166 retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
1168 rt2x00lib_txdone(entry, tx_status, retry);
1171 * Make this entry available for reuse.
1174 rt2x00_set_field32(&word, TXD_W0_VALID, 0);
1175 rt2x00_desc_write(txd, 0, word);
1176 rt2x00_ring_index_done_inc(ring);
1180 * If the data ring was full before the txdone handler
1181 * we must make sure the packet queue in the mac80211 stack
1182 * is reenabled when the txdone handler has finished.
1184 entry = ring->entry;
1185 if (!rt2x00_ring_full(ring))
1186 ieee80211_wake_queue(rt2x00dev->hw,
1187 entry->tx_status.control.queue);
1190 static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
1192 struct rt2x00_dev *rt2x00dev = dev_instance;
1196 * Get the interrupt sources & saved to local variable.
1197 * Write register value back to clear pending interrupts.
1199 rt2x00pci_register_read(rt2x00dev, CSR7, ®);
1200 rt2x00pci_register_write(rt2x00dev, CSR7, reg);
1205 if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
1209 * Handle interrupts, walk through all bits
1210 * and run the tasks, the bits are checked in order of
1215 * 1 - Beacon timer expired interrupt.
1217 if (rt2x00_get_field32(reg, CSR7_TBCN_EXPIRE))
1218 rt2x00lib_beacondone(rt2x00dev);
1221 * 2 - Rx ring done interrupt.
1223 if (rt2x00_get_field32(reg, CSR7_RXDONE))
1224 rt2x00pci_rxdone(rt2x00dev);
1227 * 3 - Atim ring transmit done interrupt.
1229 if (rt2x00_get_field32(reg, CSR7_TXDONE_ATIMRING))
1230 rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_AFTER_BEACON);
1233 * 4 - Priority ring transmit done interrupt.
1235 if (rt2x00_get_field32(reg, CSR7_TXDONE_PRIORING))
1236 rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA0);
1239 * 5 - Tx ring transmit done interrupt.
1241 if (rt2x00_get_field32(reg, CSR7_TXDONE_TXRING))
1242 rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA1);
1248 * Device probe functions.
1250 static int rt2400pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1252 struct eeprom_93cx6 eeprom;
1257 rt2x00pci_register_read(rt2x00dev, CSR21, ®);
1259 eeprom.data = rt2x00dev;
1260 eeprom.register_read = rt2400pci_eepromregister_read;
1261 eeprom.register_write = rt2400pci_eepromregister_write;
1262 eeprom.width = rt2x00_get_field32(reg, CSR21_TYPE_93C46) ?
1263 PCI_EEPROM_WIDTH_93C46 : PCI_EEPROM_WIDTH_93C66;
1264 eeprom.reg_data_in = 0;
1265 eeprom.reg_data_out = 0;
1266 eeprom.reg_data_clock = 0;
1267 eeprom.reg_chip_select = 0;
1269 eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
1270 EEPROM_SIZE / sizeof(u16));
1273 * Start validation of the data that has been read.
1275 mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1276 if (!is_valid_ether_addr(mac)) {
1277 DECLARE_MAC_BUF(macbuf);
1279 random_ether_addr(mac);
1280 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1283 rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1284 if (word == 0xffff) {
1285 ERROR(rt2x00dev, "Invalid EEPROM data detected.\n");
1292 static int rt2400pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
1299 * Read EEPROM word for configuration.
1301 rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1304 * Identify RF chipset.
1306 value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1307 rt2x00pci_register_read(rt2x00dev, CSR0, ®);
1308 rt2x00_set_chip(rt2x00dev, RT2460, value, reg);
1310 if (!rt2x00_rf(&rt2x00dev->chip, RF2420) &&
1311 !rt2x00_rf(&rt2x00dev->chip, RF2421)) {
1312 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1317 * Identify default antenna configuration.
1319 rt2x00dev->hw->conf.antenna_sel_tx =
1320 rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1321 rt2x00dev->hw->conf.antenna_sel_rx =
1322 rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1325 * Store led mode, for correct led behaviour.
1327 rt2x00dev->led_mode =
1328 rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1331 * Detect if this device has an hardware controlled radio.
1333 #ifdef CONFIG_RT2400PCI_RFKILL
1334 if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
1335 __set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
1336 #endif /* CONFIG_RT2400PCI_RFKILL */
1339 * Check if the BBP tuning should be enabled.
1341 if (!rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_AGCVGC_TUNING))
1342 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1348 * RF value list for RF2420 & RF2421
1351 static const struct rf_channel rf_vals_bg[] = {
1352 { 1, 0x00022058, 0x000c1fda, 0x00000101, 0 },
1353 { 2, 0x00022058, 0x000c1fee, 0x00000101, 0 },
1354 { 3, 0x00022058, 0x000c2002, 0x00000101, 0 },
1355 { 4, 0x00022058, 0x000c2016, 0x00000101, 0 },
1356 { 5, 0x00022058, 0x000c202a, 0x00000101, 0 },
1357 { 6, 0x00022058, 0x000c203e, 0x00000101, 0 },
1358 { 7, 0x00022058, 0x000c2052, 0x00000101, 0 },
1359 { 8, 0x00022058, 0x000c2066, 0x00000101, 0 },
1360 { 9, 0x00022058, 0x000c207a, 0x00000101, 0 },
1361 { 10, 0x00022058, 0x000c208e, 0x00000101, 0 },
1362 { 11, 0x00022058, 0x000c20a2, 0x00000101, 0 },
1363 { 12, 0x00022058, 0x000c20b6, 0x00000101, 0 },
1364 { 13, 0x00022058, 0x000c20ca, 0x00000101, 0 },
1365 { 14, 0x00022058, 0x000c20fa, 0x00000101, 0 },
1368 static void rt2400pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1370 struct hw_mode_spec *spec = &rt2x00dev->spec;
1375 * Initialize all hw fields.
1377 rt2x00dev->hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1378 rt2x00dev->hw->extra_tx_headroom = 0;
1379 rt2x00dev->hw->max_signal = MAX_SIGNAL;
1380 rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1381 rt2x00dev->hw->queues = 2;
1383 SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_pci(rt2x00dev)->dev);
1384 SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1385 rt2x00_eeprom_addr(rt2x00dev,
1386 EEPROM_MAC_ADDR_0));
1389 * Convert tx_power array in eeprom.
1391 txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1392 for (i = 0; i < 14; i++)
1393 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1396 * Initialize hw_mode information.
1398 spec->num_modes = 1;
1399 spec->num_rates = 4;
1400 spec->tx_power_a = NULL;
1401 spec->tx_power_bg = txpower;
1402 spec->tx_power_default = DEFAULT_TXPOWER;
1404 spec->num_channels = ARRAY_SIZE(rf_vals_bg);
1405 spec->channels = rf_vals_bg;
1408 static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1413 * Allocate eeprom data.
1415 retval = rt2400pci_validate_eeprom(rt2x00dev);
1419 retval = rt2400pci_init_eeprom(rt2x00dev);
1424 * Initialize hw specifications.
1426 rt2400pci_probe_hw_mode(rt2x00dev);
1429 * This device requires the beacon ring
1431 __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1434 * Set the rssi offset.
1436 rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1442 * IEEE80211 stack callback functions.
1444 static void rt2400pci_configure_filter(struct ieee80211_hw *hw,
1445 unsigned int changed_flags,
1446 unsigned int *total_flags,
1448 struct dev_addr_list *mc_list)
1450 struct rt2x00_dev *rt2x00dev = hw->priv;
1451 struct interface *intf = &rt2x00dev->interface;
1455 * Mask off any flags we are going to ignore from
1456 * the total_flags field.
1467 * Apply some rules to the filters:
1468 * - Some filters imply different filters to be set.
1469 * - Some things we can't filter out at all.
1470 * - Some filters are set based on interface type.
1472 *total_flags |= FIF_ALLMULTI;
1473 if (*total_flags & FIF_OTHER_BSS ||
1474 *total_flags & FIF_PROMISC_IN_BSS)
1475 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1476 if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1477 *total_flags |= FIF_PROMISC_IN_BSS;
1480 * Check if there is any work left for us.
1482 if (intf->filter == *total_flags)
1484 intf->filter = *total_flags;
1487 * Start configuration steps.
1488 * Note that the version error will always be dropped
1489 * since there is no filter for it at this time.
1491 rt2x00pci_register_read(rt2x00dev, RXCSR0, ®);
1492 rt2x00_set_field32(®, RXCSR0_DROP_CRC,
1493 !(*total_flags & FIF_FCSFAIL));
1494 rt2x00_set_field32(®, RXCSR0_DROP_PHYSICAL,
1495 !(*total_flags & FIF_PLCPFAIL));
1496 rt2x00_set_field32(®, RXCSR0_DROP_CONTROL,
1497 !(*total_flags & FIF_CONTROL));
1498 rt2x00_set_field32(®, RXCSR0_DROP_NOT_TO_ME,
1499 !(*total_flags & FIF_PROMISC_IN_BSS));
1500 rt2x00_set_field32(®, RXCSR0_DROP_TODS,
1501 !(*total_flags & FIF_PROMISC_IN_BSS));
1502 rt2x00_set_field32(®, RXCSR0_DROP_VERSION_ERROR, 1);
1503 rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
1506 static int rt2400pci_set_retry_limit(struct ieee80211_hw *hw,
1507 u32 short_retry, u32 long_retry)
1509 struct rt2x00_dev *rt2x00dev = hw->priv;
1512 rt2x00pci_register_read(rt2x00dev, CSR11, ®);
1513 rt2x00_set_field32(®, CSR11_LONG_RETRY, long_retry);
1514 rt2x00_set_field32(®, CSR11_SHORT_RETRY, short_retry);
1515 rt2x00pci_register_write(rt2x00dev, CSR11, reg);
1520 static int rt2400pci_conf_tx(struct ieee80211_hw *hw,
1522 const struct ieee80211_tx_queue_params *params)
1524 struct rt2x00_dev *rt2x00dev = hw->priv;
1527 * We don't support variating cw_min and cw_max variables
1528 * per queue. So by default we only configure the TX queue,
1529 * and ignore all other configurations.
1531 if (queue != IEEE80211_TX_QUEUE_DATA0)
1534 if (rt2x00mac_conf_tx(hw, queue, params))
1538 * Write configuration to register.
1540 rt2400pci_config_cw(rt2x00dev, &rt2x00dev->tx->tx_params);
1545 static u64 rt2400pci_get_tsf(struct ieee80211_hw *hw)
1547 struct rt2x00_dev *rt2x00dev = hw->priv;
1551 rt2x00pci_register_read(rt2x00dev, CSR17, ®);
1552 tsf = (u64) rt2x00_get_field32(reg, CSR17_HIGH_TSFTIMER) << 32;
1553 rt2x00pci_register_read(rt2x00dev, CSR16, ®);
1554 tsf |= rt2x00_get_field32(reg, CSR16_LOW_TSFTIMER);
1559 static void rt2400pci_reset_tsf(struct ieee80211_hw *hw)
1561 struct rt2x00_dev *rt2x00dev = hw->priv;
1563 rt2x00pci_register_write(rt2x00dev, CSR16, 0);
1564 rt2x00pci_register_write(rt2x00dev, CSR17, 0);
1567 static int rt2400pci_tx_last_beacon(struct ieee80211_hw *hw)
1569 struct rt2x00_dev *rt2x00dev = hw->priv;
1572 rt2x00pci_register_read(rt2x00dev, CSR15, ®);
1573 return rt2x00_get_field32(reg, CSR15_BEACON_SENT);
1576 static const struct ieee80211_ops rt2400pci_mac80211_ops = {
1578 .start = rt2x00mac_start,
1579 .stop = rt2x00mac_stop,
1580 .add_interface = rt2x00mac_add_interface,
1581 .remove_interface = rt2x00mac_remove_interface,
1582 .config = rt2x00mac_config,
1583 .config_interface = rt2x00mac_config_interface,
1584 .configure_filter = rt2400pci_configure_filter,
1585 .get_stats = rt2x00mac_get_stats,
1586 .set_retry_limit = rt2400pci_set_retry_limit,
1587 .erp_ie_changed = rt2x00mac_erp_ie_changed,
1588 .conf_tx = rt2400pci_conf_tx,
1589 .get_tx_stats = rt2x00mac_get_tx_stats,
1590 .get_tsf = rt2400pci_get_tsf,
1591 .reset_tsf = rt2400pci_reset_tsf,
1592 .beacon_update = rt2x00pci_beacon_update,
1593 .tx_last_beacon = rt2400pci_tx_last_beacon,
1596 static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = {
1597 .irq_handler = rt2400pci_interrupt,
1598 .probe_hw = rt2400pci_probe_hw,
1599 .initialize = rt2x00pci_initialize,
1600 .uninitialize = rt2x00pci_uninitialize,
1601 .set_device_state = rt2400pci_set_device_state,
1602 .rfkill_poll = rt2400pci_rfkill_poll,
1603 .link_stats = rt2400pci_link_stats,
1604 .reset_tuner = rt2400pci_reset_tuner,
1605 .link_tuner = rt2400pci_link_tuner,
1606 .write_tx_desc = rt2400pci_write_tx_desc,
1607 .write_tx_data = rt2x00pci_write_tx_data,
1608 .kick_tx_queue = rt2400pci_kick_tx_queue,
1609 .fill_rxdone = rt2400pci_fill_rxdone,
1610 .config_mac_addr = rt2400pci_config_mac_addr,
1611 .config_bssid = rt2400pci_config_bssid,
1612 .config_type = rt2400pci_config_type,
1613 .config_preamble = rt2400pci_config_preamble,
1614 .config = rt2400pci_config,
1617 static const struct rt2x00_ops rt2400pci_ops = {
1619 .rxd_size = RXD_DESC_SIZE,
1620 .txd_size = TXD_DESC_SIZE,
1621 .eeprom_size = EEPROM_SIZE,
1623 .lib = &rt2400pci_rt2x00_ops,
1624 .hw = &rt2400pci_mac80211_ops,
1625 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1626 .debugfs = &rt2400pci_rt2x00debug,
1627 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1631 * RT2400pci module information.
1633 static struct pci_device_id rt2400pci_device_table[] = {
1634 { PCI_DEVICE(0x1814, 0x0101), PCI_DEVICE_DATA(&rt2400pci_ops) },
1638 MODULE_AUTHOR(DRV_PROJECT);
1639 MODULE_VERSION(DRV_VERSION);
1640 MODULE_DESCRIPTION("Ralink RT2400 PCI & PCMCIA Wireless LAN driver.");
1641 MODULE_SUPPORTED_DEVICE("Ralink RT2460 PCI & PCMCIA chipset based cards");
1642 MODULE_DEVICE_TABLE(pci, rt2400pci_device_table);
1643 MODULE_LICENSE("GPL");
1645 static struct pci_driver rt2400pci_driver = {
1647 .id_table = rt2400pci_device_table,
1648 .probe = rt2x00pci_probe,
1649 .remove = __devexit_p(rt2x00pci_remove),
1650 .suspend = rt2x00pci_suspend,
1651 .resume = rt2x00pci_resume,
1654 static int __init rt2400pci_init(void)
1656 return pci_register_driver(&rt2400pci_driver);
1659 static void __exit rt2400pci_exit(void)
1661 pci_unregister_driver(&rt2400pci_driver);
1664 module_init(rt2400pci_init);
1665 module_exit(rt2400pci_exit);