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[ARM] pxa: update defconfig for Verdex Pro
[linux-2.6/verdex.git] / drivers / net / wireless / adm8211.c
blobb80f514877d82ad6cef4930c6c96e3f866f49971
1
2 /*
3 * Linux device driver for ADMtek ADM8211 (IEEE 802.11b MAC/BBP)
4 *
5 * Copyright (c) 2003, Jouni Malinen <j@w1.fi>
6 * Copyright (c) 2004-2007, Michael Wu <flamingice@sourmilk.net>
7 * Some parts copyright (c) 2003 by David Young <dyoung@pobox.com>
8 * and used with permission.
9 *
10 * Much thanks to Infineon-ADMtek for their support of this driver.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation. See README and COPYING for
15 * more details.
16 */
17
18 #include <linux/init.h>
19 #include <linux/if.h>
20 #include <linux/skbuff.h>
21 #include <linux/etherdevice.h>
22 #include <linux/pci.h>
23 #include <linux/delay.h>
24 #include <linux/crc32.h>
25 #include <linux/eeprom_93cx6.h>
26 #include <net/mac80211.h>
27
28 #include "adm8211.h"
29
30 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
31 MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");
32 MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
33 MODULE_SUPPORTED_DEVICE("ADM8211");
34 MODULE_LICENSE("GPL");
35
36 static unsigned int tx_ring_size __read_mostly = 16;
37 static unsigned int rx_ring_size __read_mostly = 16;
38
39 module_param(tx_ring_size, uint, 0);
40 module_param(rx_ring_size, uint, 0);
41
42 static struct pci_device_id adm8211_pci_id_table[] __devinitdata = {
43 /* ADMtek ADM8211 */
44 { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
45 { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
46 { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
47 { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
48 { 0 }
49 };
50
51 static struct ieee80211_rate adm8211_rates[] = {
52 { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
53 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
54 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
55 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
56 { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */
57 };
58
59 static const struct ieee80211_channel adm8211_channels[] = {
60 { .center_freq = 2412},
61 { .center_freq = 2417},
62 { .center_freq = 2422},
63 { .center_freq = 2427},
64 { .center_freq = 2432},
65 { .center_freq = 2437},
66 { .center_freq = 2442},
67 { .center_freq = 2447},
68 { .center_freq = 2452},
69 { .center_freq = 2457},
70 { .center_freq = 2462},
71 { .center_freq = 2467},
72 { .center_freq = 2472},
73 { .center_freq = 2484},
74 };
75
76
77 static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
78 {
79 struct adm8211_priv *priv = eeprom->data;
80 u32 reg = ADM8211_CSR_READ(SPR);
81
82 eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
83 eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
84 eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
85 eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
86 }
87
88 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
89 {
90 struct adm8211_priv *priv = eeprom->data;
91 u32 reg = 0x4000 | ADM8211_SPR_SRS;
92
93 if (eeprom->reg_data_in)
94 reg |= ADM8211_SPR_SDI;
95 if (eeprom->reg_data_out)
96 reg |= ADM8211_SPR_SDO;
97 if (eeprom->reg_data_clock)
98 reg |= ADM8211_SPR_SCLK;
99 if (eeprom->reg_chip_select)
100 reg |= ADM8211_SPR_SCS;
101
102 ADM8211_CSR_WRITE(SPR, reg);
103 ADM8211_CSR_READ(SPR); /* eeprom_delay */
104 }
105
106 static int adm8211_read_eeprom(struct ieee80211_hw *dev)
107 {
108 struct adm8211_priv *priv = dev->priv;
109 unsigned int words, i;
110 struct ieee80211_chan_range chan_range;
111 u16 cr49;
112 struct eeprom_93cx6 eeprom = {
113 .data = priv,
114 .register_read = adm8211_eeprom_register_read,
115 .register_write = adm8211_eeprom_register_write
116 };
117
118 if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
119 /* 256 * 16-bit = 512 bytes */
120 eeprom.width = PCI_EEPROM_WIDTH_93C66;
121 words = 256;
122 } else {
123 /* 64 * 16-bit = 128 bytes */
124 eeprom.width = PCI_EEPROM_WIDTH_93C46;
125 words = 64;
126 }
127
128 priv->eeprom_len = words * 2;
129 priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
130 if (!priv->eeprom)
131 return -ENOMEM;
132
133 eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words);
134
135 cr49 = le16_to_cpu(priv->eeprom->cr49);
136 priv->rf_type = (cr49 >> 3) & 0x7;
137 switch (priv->rf_type) {
138 case ADM8211_TYPE_INTERSIL:
139 case ADM8211_TYPE_RFMD:
140 case ADM8211_TYPE_MARVEL:
141 case ADM8211_TYPE_AIROHA:
142 case ADM8211_TYPE_ADMTEK:
143 break;
144
145 default:
146 if (priv->pdev->revision < ADM8211_REV_CA)
147 priv->rf_type = ADM8211_TYPE_RFMD;
148 else
149 priv->rf_type = ADM8211_TYPE_AIROHA;
150
151 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
152 pci_name(priv->pdev), (cr49 >> 3) & 0x7);
153 }
154
155 priv->bbp_type = cr49 & 0x7;
156 switch (priv->bbp_type) {
157 case ADM8211_TYPE_INTERSIL:
158 case ADM8211_TYPE_RFMD:
159 case ADM8211_TYPE_MARVEL:
160 case ADM8211_TYPE_AIROHA:
161 case ADM8211_TYPE_ADMTEK:
162 break;
163 default:
164 if (priv->pdev->revision < ADM8211_REV_CA)
165 priv->bbp_type = ADM8211_TYPE_RFMD;
166 else
167 priv->bbp_type = ADM8211_TYPE_ADMTEK;
168
169 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
170 pci_name(priv->pdev), cr49 >> 3);
171 }
172
173 if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
174 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
175 pci_name(priv->pdev), priv->eeprom->country_code);
176
177 chan_range = cranges[2];
178 } else
179 chan_range = cranges[priv->eeprom->country_code];
180
181 printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
182 pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
183
184 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels));
185
186 memcpy(priv->channels, adm8211_channels, sizeof(priv->channels));
187 priv->band.channels = priv->channels;
188 priv->band.n_channels = ARRAY_SIZE(adm8211_channels);
189 priv->band.bitrates = adm8211_rates;
190 priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates);
191
192 for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
193 if (i < chan_range.min || i > chan_range.max)
194 priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED;
195
196 switch (priv->eeprom->specific_bbptype) {
197 case ADM8211_BBP_RFMD3000:
198 case ADM8211_BBP_RFMD3002:
199 case ADM8211_BBP_ADM8011:
200 priv->specific_bbptype = priv->eeprom->specific_bbptype;
201 break;
202
203 default:
204 if (priv->pdev->revision < ADM8211_REV_CA)
205 priv->specific_bbptype = ADM8211_BBP_RFMD3000;
206 else
207 priv->specific_bbptype = ADM8211_BBP_ADM8011;
208
209 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
210 pci_name(priv->pdev), priv->eeprom->specific_bbptype);
211 }
212
213 switch (priv->eeprom->specific_rftype) {
214 case ADM8211_RFMD2948:
215 case ADM8211_RFMD2958:
216 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
217 case ADM8211_MAX2820:
218 case ADM8211_AL2210L:
219 priv->transceiver_type = priv->eeprom->specific_rftype;
220 break;
221
222 default:
223 if (priv->pdev->revision == ADM8211_REV_BA)
224 priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
225 else if (priv->pdev->revision == ADM8211_REV_CA)
226 priv->transceiver_type = ADM8211_AL2210L;
227 else if (priv->pdev->revision == ADM8211_REV_AB)
228 priv->transceiver_type = ADM8211_RFMD2948;
229
230 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
231 pci_name(priv->pdev), priv->eeprom->specific_rftype);
232
233 break;
234 }
235
236 printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
237 "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
238 priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
239
240 return 0;
241 }
242
243 static inline void adm8211_write_sram(struct ieee80211_hw *dev,
244 u32 addr, u32 data)
245 {
246 struct adm8211_priv *priv = dev->priv;
247
248 ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
249 (priv->pdev->revision < ADM8211_REV_BA ?
250 0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
251 ADM8211_CSR_READ(WEPCTL);
252 msleep(1);
253
254 ADM8211_CSR_WRITE(WESK, data);
255 ADM8211_CSR_READ(WESK);
256 msleep(1);
257 }
258
259 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
260 unsigned int addr, u8 *buf,
261 unsigned int len)
262 {
263 struct adm8211_priv *priv = dev->priv;
264 u32 reg = ADM8211_CSR_READ(WEPCTL);
265 unsigned int i;
266
267 if (priv->pdev->revision < ADM8211_REV_BA) {
268 for (i = 0; i < len; i += 2) {
269 u16 val = buf[i] | (buf[i + 1] << 8);
270 adm8211_write_sram(dev, addr + i / 2, val);
271 }
272 } else {
273 for (i = 0; i < len; i += 4) {
274 u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
275 (buf[i + 2] << 16) | (buf[i + 3] << 24);
276 adm8211_write_sram(dev, addr + i / 4, val);
277 }
278 }
279
280 ADM8211_CSR_WRITE(WEPCTL, reg);
281 }
282
283 static void adm8211_clear_sram(struct ieee80211_hw *dev)
284 {
285 struct adm8211_priv *priv = dev->priv;
286 u32 reg = ADM8211_CSR_READ(WEPCTL);
287 unsigned int addr;
288
289 for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
290 adm8211_write_sram(dev, addr, 0);
291
292 ADM8211_CSR_WRITE(WEPCTL, reg);
293 }
294
295 static int adm8211_get_stats(struct ieee80211_hw *dev,
296 struct ieee80211_low_level_stats *stats)
297 {
298 struct adm8211_priv *priv = dev->priv;
299
300 memcpy(stats, &priv->stats, sizeof(*stats));
301
302 return 0;
303 }
304
305 static int adm8211_get_tx_stats(struct ieee80211_hw *dev,
306 struct ieee80211_tx_queue_stats *stats)
307 {
308 struct adm8211_priv *priv = dev->priv;
309
310 stats[0].len = priv->cur_tx - priv->dirty_tx;
311 stats[0].limit = priv->tx_ring_size - 2;
312 stats[0].count = priv->dirty_tx;
313
314 return 0;
315 }
316
317 static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
318 {
319 struct adm8211_priv *priv = dev->priv;
320 unsigned int dirty_tx;
321
322 spin_lock(&priv->lock);
323
324 for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
325 unsigned int entry = dirty_tx % priv->tx_ring_size;
326 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
327 struct ieee80211_tx_info *txi;
328 struct adm8211_tx_ring_info *info;
329 struct sk_buff *skb;
330
331 if (status & TDES0_CONTROL_OWN ||
332 !(status & TDES0_CONTROL_DONE))
333 break;
334
335 info = &priv->tx_buffers[entry];
336 skb = info->skb;
337 txi = IEEE80211_SKB_CB(skb);
338
339 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
340
341 pci_unmap_single(priv->pdev, info->mapping,
342 info->skb->len, PCI_DMA_TODEVICE);
343
344 ieee80211_tx_info_clear_status(txi);
345
346 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
347 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
348 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
349 !(status & TDES0_STATUS_ES))
350 txi->flags |= IEEE80211_TX_STAT_ACK;
351
352 ieee80211_tx_status_irqsafe(dev, skb);
353
354 info->skb = NULL;
355 }
356
357 if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
358 ieee80211_wake_queue(dev, 0);
359
360 priv->dirty_tx = dirty_tx;
361 spin_unlock(&priv->lock);
362 }
363
364
365 static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
366 {
367 struct adm8211_priv *priv = dev->priv;
368 unsigned int entry = priv->cur_rx % priv->rx_ring_size;
369 u32 status;
370 unsigned int pktlen;
371 struct sk_buff *skb, *newskb;
372 unsigned int limit = priv->rx_ring_size;
373 u8 rssi, rate;
374
375 while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
376 if (!limit--)
377 break;
378
379 status = le32_to_cpu(priv->rx_ring[entry].status);
380 rate = (status & RDES0_STATUS_RXDR) >> 12;
381 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
382 RDES1_STATUS_RSSI;
383
384 pktlen = status & RDES0_STATUS_FL;
385 if (pktlen > RX_PKT_SIZE) {
386 if (net_ratelimit())
387 printk(KERN_DEBUG "%s: frame too long (%d)\n",
388 wiphy_name(dev->wiphy), pktlen);
389 pktlen = RX_PKT_SIZE;
390 }
391
392 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
393 skb = NULL; /* old buffer will be reused */
394 /* TODO: update RX error stats */
395 /* TODO: check RDES0_STATUS_CRC*E */
396 } else if (pktlen < RX_COPY_BREAK) {
397 skb = dev_alloc_skb(pktlen);
398 if (skb) {
399 pci_dma_sync_single_for_cpu(
400 priv->pdev,
401 priv->rx_buffers[entry].mapping,
402 pktlen, PCI_DMA_FROMDEVICE);
403 memcpy(skb_put(skb, pktlen),
404 skb_tail_pointer(priv->rx_buffers[entry].skb),
405 pktlen);
406 pci_dma_sync_single_for_device(
407 priv->pdev,
408 priv->rx_buffers[entry].mapping,
409 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
410 }
411 } else {
412 newskb = dev_alloc_skb(RX_PKT_SIZE);
413 if (newskb) {
414 skb = priv->rx_buffers[entry].skb;
415 skb_put(skb, pktlen);
416 pci_unmap_single(
417 priv->pdev,
418 priv->rx_buffers[entry].mapping,
419 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
420 priv->rx_buffers[entry].skb = newskb;
421 priv->rx_buffers[entry].mapping =
422 pci_map_single(priv->pdev,
423 skb_tail_pointer(newskb),
424 RX_PKT_SIZE,
425 PCI_DMA_FROMDEVICE);
426 } else {
427 skb = NULL;
428 /* TODO: update rx dropped stats */
429 }
430
431 priv->rx_ring[entry].buffer1 =
432 cpu_to_le32(priv->rx_buffers[entry].mapping);
433 }
434
435 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
436 RDES0_STATUS_SQL);
437 priv->rx_ring[entry].length =
438 cpu_to_le32(RX_PKT_SIZE |
439 (entry == priv->rx_ring_size - 1 ?
440 RDES1_CONTROL_RER : 0));
441
442 if (skb) {
443 struct ieee80211_rx_status rx_status = {0};
444
445 if (priv->pdev->revision < ADM8211_REV_CA)
446 rx_status.signal = rssi;
447 else
448 rx_status.signal = 100 - rssi;
449
450 rx_status.rate_idx = rate;
451
452 rx_status.freq = adm8211_channels[priv->channel - 1].center_freq;
453 rx_status.band = IEEE80211_BAND_2GHZ;
454
455 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
456 ieee80211_rx_irqsafe(dev, skb);
457 }
458
459 entry = (++priv->cur_rx) % priv->rx_ring_size;
460 }
461
462 /* TODO: check LPC and update stats? */
463 }
464
465
466 static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
467 {
468 #define ADM8211_INT(x) \
469 do { \
470 if (unlikely(stsr & ADM8211_STSR_ ## x)) \
471 printk(KERN_DEBUG "%s: " #x "\n", wiphy_name(dev->wiphy)); \
472 } while (0)
473
474 struct ieee80211_hw *dev = dev_id;
475 struct adm8211_priv *priv = dev->priv;
476 u32 stsr = ADM8211_CSR_READ(STSR);
477 ADM8211_CSR_WRITE(STSR, stsr);
478 if (stsr == 0xffffffff)
479 return IRQ_HANDLED;
480
481 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
482 return IRQ_HANDLED;
483
484 if (stsr & ADM8211_STSR_RCI)
485 adm8211_interrupt_rci(dev);
486 if (stsr & ADM8211_STSR_TCI)
487 adm8211_interrupt_tci(dev);
488
489 ADM8211_INT(PCF);
490 ADM8211_INT(BCNTC);
491 ADM8211_INT(GPINT);
492 ADM8211_INT(ATIMTC);
493 ADM8211_INT(TSFTF);
494 ADM8211_INT(TSCZ);
495 ADM8211_INT(SQL);
496 ADM8211_INT(WEPTD);
497 ADM8211_INT(ATIME);
498 ADM8211_INT(TEIS);
499 ADM8211_INT(FBE);
500 ADM8211_INT(REIS);
501 ADM8211_INT(GPTT);
502 ADM8211_INT(RPS);
503 ADM8211_INT(RDU);
504 ADM8211_INT(TUF);
505 ADM8211_INT(TPS);
506
507 return IRQ_HANDLED;
508
509 #undef ADM8211_INT
510 }
511
512 #define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
513 static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \
514 u16 addr, u32 value) { \
515 struct adm8211_priv *priv = dev->priv; \
516 unsigned int i; \
517 u32 reg, bitbuf; \
518 \
519 value &= v_mask; \
520 addr &= a_mask; \
521 bitbuf = (value << v_shift) | (addr << a_shift); \
522 \
523 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \
524 ADM8211_CSR_READ(SYNRF); \
525 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \
526 ADM8211_CSR_READ(SYNRF); \
527 \
528 if (prewrite) { \
529 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \
530 ADM8211_CSR_READ(SYNRF); \
531 } \
532 \
533 for (i = 0; i <= bits; i++) { \
534 if (bitbuf & (1 << (bits - i))) \
535 reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \
536 else \
537 reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \
538 \
539 ADM8211_CSR_WRITE(SYNRF, reg); \
540 ADM8211_CSR_READ(SYNRF); \
541 \
542 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
543 ADM8211_CSR_READ(SYNRF); \
544 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
545 ADM8211_CSR_READ(SYNRF); \
546 } \
547 \
548 if (postwrite == 1) { \
549 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \
550 ADM8211_CSR_READ(SYNRF); \
551 } \
552 if (postwrite == 2) { \
553 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \
554 ADM8211_CSR_READ(SYNRF); \
555 } \
556 \
557 ADM8211_CSR_WRITE(SYNRF, 0); \
558 ADM8211_CSR_READ(SYNRF); \
559 }
560
561 WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1)
562 WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1)
563 WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
564 WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2)
565
566 #undef WRITE_SYN
567
568 static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
569 {
570 struct adm8211_priv *priv = dev->priv;
571 unsigned int timeout;
572 u32 reg;
573
574 timeout = 10;
575 while (timeout > 0) {
576 reg = ADM8211_CSR_READ(BBPCTL);
577 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
578 break;
579 timeout--;
580 msleep(2);
581 }
582
583 if (timeout == 0) {
584 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
585 " prewrite (reg=0x%08x)\n",
586 wiphy_name(dev->wiphy), addr, data, reg);
587 return -ETIMEDOUT;
588 }
589
590 switch (priv->bbp_type) {
591 case ADM8211_TYPE_INTERSIL:
592 reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */
593 break;
594 case ADM8211_TYPE_RFMD:
595 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
596 (0x01 << 18);
597 break;
598 case ADM8211_TYPE_ADMTEK:
599 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
600 (0x05 << 18);
601 break;
602 }
603 reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
604
605 ADM8211_CSR_WRITE(BBPCTL, reg);
606
607 timeout = 10;
608 while (timeout > 0) {
609 reg = ADM8211_CSR_READ(BBPCTL);
610 if (!(reg & ADM8211_BBPCTL_WR))
611 break;
612 timeout--;
613 msleep(2);
614 }
615
616 if (timeout == 0) {
617 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
618 ~ADM8211_BBPCTL_WR);
619 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
620 " postwrite (reg=0x%08x)\n",
621 wiphy_name(dev->wiphy), addr, data, reg);
622 return -ETIMEDOUT;
623 }
624
625 return 0;
626 }
627
628 static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
629 {
630 static const u32 adm8211_rfmd2958_reg5[] =
631 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
632 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
633 static const u32 adm8211_rfmd2958_reg6[] =
634 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
635 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
636
637 struct adm8211_priv *priv = dev->priv;
638 u8 ant_power = priv->ant_power > 0x3F ?
639 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
640 u8 tx_power = priv->tx_power > 0x3F ?
641 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
642 u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
643 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
644 u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
645 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
646 u32 reg;
647
648 ADM8211_IDLE();
649
650 /* Program synthesizer to new channel */
651 switch (priv->transceiver_type) {
652 case ADM8211_RFMD2958:
653 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
654 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
655 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
656
657 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
658 adm8211_rfmd2958_reg5[chan - 1]);
659 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
660 adm8211_rfmd2958_reg6[chan - 1]);
661 break;
662
663 case ADM8211_RFMD2948:
664 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
665 SI4126_MAIN_XINDIV2);
666 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
667 SI4126_POWERDOWN_PDIB |
668 SI4126_POWERDOWN_PDRB);
669 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
670 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
671 (chan == 14 ?
672 2110 : (2033 + (chan * 5))));
673 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
674 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
675 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
676 break;
677
678 case ADM8211_MAX2820:
679 adm8211_rf_write_syn_max2820(dev, 0x3,
680 (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
681 break;
682
683 case ADM8211_AL2210L:
684 adm8211_rf_write_syn_al2210l(dev, 0x0,
685 (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
686 break;
687
688 default:
689 printk(KERN_DEBUG "%s: unsupported transceiver type %d\n",
690 wiphy_name(dev->wiphy), priv->transceiver_type);
691 break;
692 }
693
694 /* write BBP regs */
695 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
696
697 /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
698 /* TODO: remove if SMC 2635W doesn't need this */
699 if (priv->transceiver_type == ADM8211_RFMD2948) {
700 reg = ADM8211_CSR_READ(GPIO);
701 reg &= 0xfffc0000;
702 reg |= ADM8211_CSR_GPIO_EN0;
703 if (chan != 14)
704 reg |= ADM8211_CSR_GPIO_O0;
705 ADM8211_CSR_WRITE(GPIO, reg);
706 }
707
708 if (priv->transceiver_type == ADM8211_RFMD2958) {
709 /* set PCNT2 */
710 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
711 /* set PCNT1 P_DESIRED/MID_BIAS */
712 reg = le16_to_cpu(priv->eeprom->cr49);
713 reg >>= 13;
714 reg <<= 15;
715 reg |= ant_power << 9;
716 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
717 /* set TXRX TX_GAIN */
718 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
719 (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0));
720 } else {
721 reg = ADM8211_CSR_READ(PLCPHD);
722 reg &= 0xff00ffff;
723 reg |= tx_power << 18;
724 ADM8211_CSR_WRITE(PLCPHD, reg);
725 }
726
727 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
728 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
729 ADM8211_CSR_READ(SYNRF);
730 msleep(30);
731
732 /* RF3000 BBP */
733 if (priv->transceiver_type != ADM8211_RFMD2958)
734 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
735 tx_power<<2);
736 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
737 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
738 adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ?
739 priv->eeprom->cr28 : 0);
740 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
741
742 ADM8211_CSR_WRITE(SYNRF, 0);
743
744 /* Nothing to do for ADMtek BBP */
745 } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
746 printk(KERN_DEBUG "%s: unsupported BBP type %d\n",
747 wiphy_name(dev->wiphy), priv->bbp_type);
748
749 ADM8211_RESTORE();
750
751 /* update current channel for adhoc (and maybe AP mode) */
752 reg = ADM8211_CSR_READ(CAP0);
753 reg &= ~0xF;
754 reg |= chan;
755 ADM8211_CSR_WRITE(CAP0, reg);
756
757 return 0;
758 }
759
760 static void adm8211_update_mode(struct ieee80211_hw *dev)
761 {
762 struct adm8211_priv *priv = dev->priv;
763
764 ADM8211_IDLE();
765
766 priv->soft_rx_crc = 0;
767 switch (priv->mode) {
768 case NL80211_IFTYPE_STATION:
769 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
770 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
771 break;
772 case NL80211_IFTYPE_ADHOC:
773 priv->nar &= ~ADM8211_NAR_PR;
774 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
775
776 /* don't trust the error bits on rev 0x20 and up in adhoc */
777 if (priv->pdev->revision >= ADM8211_REV_BA)
778 priv->soft_rx_crc = 1;
779 break;
780 case NL80211_IFTYPE_MONITOR:
781 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
782 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
783 break;
784 }
785
786 ADM8211_RESTORE();
787 }
788
789 static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
790 {
791 struct adm8211_priv *priv = dev->priv;
792
793 switch (priv->transceiver_type) {
794 case ADM8211_RFMD2958:
795 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
796 /* comments taken from ADMtek vendor driver */
797
798 /* Reset RF2958 after power on */
799 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
800 /* Initialize RF VCO Core Bias to maximum */
801 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
802 /* Initialize IF PLL */
803 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
804 /* Initialize IF PLL Coarse Tuning */
805 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
806 /* Initialize RF PLL */
807 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
808 /* Initialize RF PLL Coarse Tuning */
809 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
810 /* Initialize TX gain and filter BW (R9) */
811 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
812 (priv->transceiver_type == ADM8211_RFMD2958 ?
813 0x10050 : 0x00050));
814 /* Initialize CAL register */
815 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
816 break;
817
818 case ADM8211_MAX2820:
819 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
820 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
821 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
822 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
823 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
824 break;
825
826 case ADM8211_AL2210L:
827 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
828 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
829 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
830 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
831 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
832 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
833 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
834 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
835 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
836 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
837 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
838 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
839 break;
840
841 case ADM8211_RFMD2948:
842 default:
843 break;
844 }
845 }
846
847 static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
848 {
849 struct adm8211_priv *priv = dev->priv;
850 u32 reg;
851
852 /* write addresses */
853 if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
854 ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A);
855 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
856 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
857 } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
858 priv->bbp_type == ADM8211_TYPE_ADMTEK) {
859 /* check specific BBP type */
860 switch (priv->specific_bbptype) {
861 case ADM8211_BBP_RFMD3000:
862 case ADM8211_BBP_RFMD3002:
863 ADM8211_CSR_WRITE(MMIWA, 0x00009101);
864 ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
865 break;
866
867 case ADM8211_BBP_ADM8011:
868 ADM8211_CSR_WRITE(MMIWA, 0x00008903);
869 ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
870
871 reg = ADM8211_CSR_READ(BBPCTL);
872 reg &= ~ADM8211_BBPCTL_TYPE;
873 reg |= 0x5 << 18;
874 ADM8211_CSR_WRITE(BBPCTL, reg);
875 break;
876 }
877
878 switch (priv->pdev->revision) {
879 case ADM8211_REV_CA:
880 if (priv->transceiver_type == ADM8211_RFMD2958 ||
881 priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
882 priv->transceiver_type == ADM8211_RFMD2948)
883 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
884 else if (priv->transceiver_type == ADM8211_MAX2820 ||
885 priv->transceiver_type == ADM8211_AL2210L)
886 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
887 break;
888
889 case ADM8211_REV_BA:
890 reg = ADM8211_CSR_READ(MMIRD1);
891 reg &= 0x0000FFFF;
892 reg |= 0x7e100000;
893 ADM8211_CSR_WRITE(MMIRD1, reg);
894 break;
895
896 case ADM8211_REV_AB:
897 case ADM8211_REV_AF:
898 default:
899 ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
900 break;
901 }
902
903 /* For RFMD */
904 ADM8211_CSR_WRITE(MACTEST, 0x800);
905 }
906
907 adm8211_hw_init_syn(dev);
908
909 /* Set RF Power control IF pin to PE1+PHYRST# */
910 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
911 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
912 ADM8211_CSR_READ(SYNRF);
913 msleep(20);
914
915 /* write BBP regs */
916 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
917 /* RF3000 BBP */
918 /* another set:
919 * 11: c8
920 * 14: 14
921 * 15: 50 (chan 1..13; chan 14: d0)
922 * 1c: 00
923 * 1d: 84
924 */
925 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
926 /* antenna selection: diversity */
927 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
928 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
929 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
930 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
931
932 if (priv->eeprom->major_version < 2) {
933 adm8211_write_bbp(dev, 0x1c, 0x00);
934 adm8211_write_bbp(dev, 0x1d, 0x80);
935 } else {
936 if (priv->pdev->revision == ADM8211_REV_BA)
937 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
938 else
939 adm8211_write_bbp(dev, 0x1c, 0x00);
940
941 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
942 }
943 } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
944 /* reset baseband */
945 adm8211_write_bbp(dev, 0x00, 0xFF);
946 /* antenna selection: diversity */
947 adm8211_write_bbp(dev, 0x07, 0x0A);
948
949 /* TODO: find documentation for this */
950 switch (priv->transceiver_type) {
951 case ADM8211_RFMD2958:
952 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
953 adm8211_write_bbp(dev, 0x00, 0x00);
954 adm8211_write_bbp(dev, 0x01, 0x00);
955 adm8211_write_bbp(dev, 0x02, 0x00);
956 adm8211_write_bbp(dev, 0x03, 0x00);
957 adm8211_write_bbp(dev, 0x06, 0x0f);
958 adm8211_write_bbp(dev, 0x09, 0x00);
959 adm8211_write_bbp(dev, 0x0a, 0x00);
960 adm8211_write_bbp(dev, 0x0b, 0x00);
961 adm8211_write_bbp(dev, 0x0c, 0x00);
962 adm8211_write_bbp(dev, 0x0f, 0xAA);
963 adm8211_write_bbp(dev, 0x10, 0x8c);
964 adm8211_write_bbp(dev, 0x11, 0x43);
965 adm8211_write_bbp(dev, 0x18, 0x40);
966 adm8211_write_bbp(dev, 0x20, 0x23);
967 adm8211_write_bbp(dev, 0x21, 0x02);
968 adm8211_write_bbp(dev, 0x22, 0x28);
969 adm8211_write_bbp(dev, 0x23, 0x30);
970 adm8211_write_bbp(dev, 0x24, 0x2d);
971 adm8211_write_bbp(dev, 0x28, 0x35);
972 adm8211_write_bbp(dev, 0x2a, 0x8c);
973 adm8211_write_bbp(dev, 0x2b, 0x81);
974 adm8211_write_bbp(dev, 0x2c, 0x44);
975 adm8211_write_bbp(dev, 0x2d, 0x0A);
976 adm8211_write_bbp(dev, 0x29, 0x40);
977 adm8211_write_bbp(dev, 0x60, 0x08);
978 adm8211_write_bbp(dev, 0x64, 0x01);
979 break;
980
981 case ADM8211_MAX2820:
982 adm8211_write_bbp(dev, 0x00, 0x00);
983 adm8211_write_bbp(dev, 0x01, 0x00);
984 adm8211_write_bbp(dev, 0x02, 0x00);
985 adm8211_write_bbp(dev, 0x03, 0x00);
986 adm8211_write_bbp(dev, 0x06, 0x0f);
987 adm8211_write_bbp(dev, 0x09, 0x05);
988 adm8211_write_bbp(dev, 0x0a, 0x02);
989 adm8211_write_bbp(dev, 0x0b, 0x00);
990 adm8211_write_bbp(dev, 0x0c, 0x0f);
991 adm8211_write_bbp(dev, 0x0f, 0x55);
992 adm8211_write_bbp(dev, 0x10, 0x8d);
993 adm8211_write_bbp(dev, 0x11, 0x43);
994 adm8211_write_bbp(dev, 0x18, 0x4a);
995 adm8211_write_bbp(dev, 0x20, 0x20);
996 adm8211_write_bbp(dev, 0x21, 0x02);
997 adm8211_write_bbp(dev, 0x22, 0x23);
998 adm8211_write_bbp(dev, 0x23, 0x30);
999 adm8211_write_bbp(dev, 0x24, 0x2d);
1000 adm8211_write_bbp(dev, 0x2a, 0x8c);
1001 adm8211_write_bbp(dev, 0x2b, 0x81);
1002 adm8211_write_bbp(dev, 0x2c, 0x44);
1003 adm8211_write_bbp(dev, 0x29, 0x4a);
1004 adm8211_write_bbp(dev, 0x60, 0x2b);
1005 adm8211_write_bbp(dev, 0x64, 0x01);
1006 break;
1007
1008 case ADM8211_AL2210L:
1009 adm8211_write_bbp(dev, 0x00, 0x00);
1010 adm8211_write_bbp(dev, 0x01, 0x00);
1011 adm8211_write_bbp(dev, 0x02, 0x00);
1012 adm8211_write_bbp(dev, 0x03, 0x00);
1013 adm8211_write_bbp(dev, 0x06, 0x0f);
1014 adm8211_write_bbp(dev, 0x07, 0x05);
1015 adm8211_write_bbp(dev, 0x08, 0x03);
1016 adm8211_write_bbp(dev, 0x09, 0x00);
1017 adm8211_write_bbp(dev, 0x0a, 0x00);
1018 adm8211_write_bbp(dev, 0x0b, 0x00);
1019 adm8211_write_bbp(dev, 0x0c, 0x10);
1020 adm8211_write_bbp(dev, 0x0f, 0x55);
1021 adm8211_write_bbp(dev, 0x10, 0x8d);
1022 adm8211_write_bbp(dev, 0x11, 0x43);
1023 adm8211_write_bbp(dev, 0x18, 0x4a);
1024 adm8211_write_bbp(dev, 0x20, 0x20);
1025 adm8211_write_bbp(dev, 0x21, 0x02);
1026 adm8211_write_bbp(dev, 0x22, 0x23);
1027 adm8211_write_bbp(dev, 0x23, 0x30);
1028 adm8211_write_bbp(dev, 0x24, 0x2d);
1029 adm8211_write_bbp(dev, 0x2a, 0xaa);
1030 adm8211_write_bbp(dev, 0x2b, 0x81);
1031 adm8211_write_bbp(dev, 0x2c, 0x44);
1032 adm8211_write_bbp(dev, 0x29, 0xfa);
1033 adm8211_write_bbp(dev, 0x60, 0x2d);
1034 adm8211_write_bbp(dev, 0x64, 0x01);
1035 break;
1036
1037 case ADM8211_RFMD2948:
1038 break;
1039
1040 default:
1041 printk(KERN_DEBUG "%s: unsupported transceiver %d\n",
1042 wiphy_name(dev->wiphy), priv->transceiver_type);
1043 break;
1044 }
1045 } else
1046 printk(KERN_DEBUG "%s: unsupported BBP %d\n",
1047 wiphy_name(dev->wiphy), priv->bbp_type);
1048
1049 ADM8211_CSR_WRITE(SYNRF, 0);
1050
1051 /* Set RF CAL control source to MAC control */
1052 reg = ADM8211_CSR_READ(SYNCTL);
1053 reg |= ADM8211_SYNCTL_SELCAL;
1054 ADM8211_CSR_WRITE(SYNCTL, reg);
1055
1056 return 0;
1057 }
1058
1059 /* configures hw beacons/probe responses */
1060 static int adm8211_set_rate(struct ieee80211_hw *dev)
1061 {
1062 struct adm8211_priv *priv = dev->priv;
1063 u32 reg;
1064 int i = 0;
1065 u8 rate_buf[12] = {0};
1066
1067 /* write supported rates */
1068 if (priv->pdev->revision != ADM8211_REV_BA) {
1069 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1070 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1071 rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80;
1072 } else {
1073 /* workaround for rev BA specific bug */
1074 rate_buf[0] = 0x04;
1075 rate_buf[1] = 0x82;
1076 rate_buf[2] = 0x04;
1077 rate_buf[3] = 0x0b;
1078 rate_buf[4] = 0x16;
1079 }
1080
1081 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1082 ARRAY_SIZE(adm8211_rates) + 1);
1083
1084 reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1085 reg |= 1 << 15; /* short preamble */
1086 reg |= 110 << 24;
1087 ADM8211_CSR_WRITE(PLCPHD, reg);
1088
1089 /* MTMLT = 512 TU (max TX MSDU lifetime)
1090 * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1091 * SRTYLIM = 224 (short retry limit, TX header value is default) */
1092 ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1093
1094 return 0;
1095 }
1096
1097 static void adm8211_hw_init(struct ieee80211_hw *dev)
1098 {
1099 struct adm8211_priv *priv = dev->priv;
1100 u32 reg;
1101 u8 cline;
1102
1103 reg = ADM8211_CSR_READ(PAR);
1104 reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1105 reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1106
1107 if (!pci_set_mwi(priv->pdev)) {
1108 reg |= 0x1 << 24;
1109 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1110
1111 switch (cline) {
1112 case 0x8: reg |= (0x1 << 14);
1113 break;
1114 case 0x16: reg |= (0x2 << 14);
1115 break;
1116 case 0x32: reg |= (0x3 << 14);
1117 break;
1118 default: reg |= (0x0 << 14);
1119 break;
1120 }
1121 }
1122
1123 ADM8211_CSR_WRITE(PAR, reg);
1124
1125 reg = ADM8211_CSR_READ(CSR_TEST1);
1126 reg &= ~(0xF << 28);
1127 reg |= (1 << 28) | (1 << 31);
1128 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1129
1130 /* lose link after 4 lost beacons */
1131 reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1132 ADM8211_CSR_WRITE(WCSR, reg);
1133
1134 /* Disable APM, enable receive FIFO threshold, and set drain receive
1135 * threshold to store-and-forward */
1136 reg = ADM8211_CSR_READ(CMDR);
1137 reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1138 reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1139 ADM8211_CSR_WRITE(CMDR, reg);
1140
1141 adm8211_set_rate(dev);
1142
1143 /* 4-bit values:
1144 * PWR1UP = 8 * 2 ms
1145 * PWR0PAPE = 8 us or 5 us
1146 * PWR1PAPE = 1 us or 3 us
1147 * PWR0TRSW = 5 us
1148 * PWR1TRSW = 12 us
1149 * PWR0PE2 = 13 us
1150 * PWR1PE2 = 1 us
1151 * PWR0TXPE = 8 or 6 */
1152 if (priv->pdev->revision < ADM8211_REV_CA)
1153 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1154 else
1155 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1156
1157 /* Enable store and forward for transmit */
1158 priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1159 ADM8211_CSR_WRITE(NAR, priv->nar);
1160
1161 /* Reset RF */
1162 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1163 ADM8211_CSR_READ(SYNRF);
1164 msleep(10);
1165 ADM8211_CSR_WRITE(SYNRF, 0);
1166 ADM8211_CSR_READ(SYNRF);
1167 msleep(5);
1168
1169 /* Set CFP Max Duration to 0x10 TU */
1170 reg = ADM8211_CSR_READ(CFPP);
1171 reg &= ~(0xffff << 8);
1172 reg |= 0x0010 << 8;
1173 ADM8211_CSR_WRITE(CFPP, reg);
1174
1175 /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1176 * TUCNT = 0x3ff - Tu counter 1024 us */
1177 ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1178
1179 /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1180 * DIFS=50 us, EIFS=100 us */
1181 if (priv->pdev->revision < ADM8211_REV_CA)
1182 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1183 (50 << 9) | 100);
1184 else
1185 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1186 (50 << 9) | 100);
1187
1188 /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1189 * RMRD = 2346 * 8 + 1 us (max RX duration) */
1190 ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1191
1192 /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1193 ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1194
1195 /* Initialize BBP (and SYN) */
1196 adm8211_hw_init_bbp(dev);
1197
1198 /* make sure interrupts are off */
1199 ADM8211_CSR_WRITE(IER, 0);
1200
1201 /* ACK interrupts */
1202 ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1203
1204 /* Setup WEP (turns it off for now) */
1205 reg = ADM8211_CSR_READ(MACTEST);
1206 reg &= ~(7 << 20);
1207 ADM8211_CSR_WRITE(MACTEST, reg);
1208
1209 reg = ADM8211_CSR_READ(WEPCTL);
1210 reg &= ~ADM8211_WEPCTL_WEPENABLE;
1211 reg |= ADM8211_WEPCTL_WEPRXBYP;
1212 ADM8211_CSR_WRITE(WEPCTL, reg);
1213
1214 /* Clear the missed-packet counter. */
1215 ADM8211_CSR_READ(LPC);
1216 }
1217
1218 static int adm8211_hw_reset(struct ieee80211_hw *dev)
1219 {
1220 struct adm8211_priv *priv = dev->priv;
1221 u32 reg, tmp;
1222 int timeout = 100;
1223
1224 /* Power-on issue */
1225 /* TODO: check if this is necessary */
1226 ADM8211_CSR_WRITE(FRCTL, 0);
1227
1228 /* Reset the chip */
1229 tmp = ADM8211_CSR_READ(PAR);
1230 ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1231
1232 while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1233 msleep(50);
1234
1235 if (timeout <= 0)
1236 return -ETIMEDOUT;
1237
1238 ADM8211_CSR_WRITE(PAR, tmp);
1239
1240 if (priv->pdev->revision == ADM8211_REV_BA &&
1241 (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1242 priv->transceiver_type == ADM8211_RFMD2958)) {
1243 reg = ADM8211_CSR_READ(CSR_TEST1);
1244 reg |= (1 << 4) | (1 << 5);
1245 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1246 } else if (priv->pdev->revision == ADM8211_REV_CA) {
1247 reg = ADM8211_CSR_READ(CSR_TEST1);
1248 reg &= ~((1 << 4) | (1 << 5));
1249 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1250 }
1251
1252 ADM8211_CSR_WRITE(FRCTL, 0);
1253
1254 reg = ADM8211_CSR_READ(CSR_TEST0);
1255 reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1256 ADM8211_CSR_WRITE(CSR_TEST0, reg);
1257
1258 adm8211_clear_sram(dev);
1259
1260 return 0;
1261 }
1262
1263 static u64 adm8211_get_tsft(struct ieee80211_hw *dev)
1264 {
1265 struct adm8211_priv *priv = dev->priv;
1266 u32 tsftl;
1267 u64 tsft;
1268
1269 tsftl = ADM8211_CSR_READ(TSFTL);
1270 tsft = ADM8211_CSR_READ(TSFTH);
1271 tsft <<= 32;
1272 tsft |= tsftl;
1273
1274 return tsft;
1275 }
1276
1277 static void adm8211_set_interval(struct ieee80211_hw *dev,
1278 unsigned short bi, unsigned short li)
1279 {
1280 struct adm8211_priv *priv = dev->priv;
1281 u32 reg;
1282
1283 /* BP (beacon interval) = data->beacon_interval
1284 * LI (listen interval) = data->listen_interval (in beacon intervals) */
1285 reg = (bi << 16) | li;
1286 ADM8211_CSR_WRITE(BPLI, reg);
1287 }
1288
1289 static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
1290 {
1291 struct adm8211_priv *priv = dev->priv;
1292 u32 reg;
1293
1294 ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
1295 reg = ADM8211_CSR_READ(ABDA1);
1296 reg &= 0x0000ffff;
1297 reg |= (bssid[4] << 16) | (bssid[5] << 24);
1298 ADM8211_CSR_WRITE(ABDA1, reg);
1299 }
1300
1301 static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
1302 {
1303 struct adm8211_priv *priv = dev->priv;
1304 struct ieee80211_conf *conf = &dev->conf;
1305 int channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1306
1307 if (channel != priv->channel) {
1308 priv->channel = channel;
1309 adm8211_rf_set_channel(dev, priv->channel);
1310 }
1311
1312 return 0;
1313 }
1314
1315 static void adm8211_bss_info_changed(struct ieee80211_hw *dev,
1316 struct ieee80211_vif *vif,
1317 struct ieee80211_bss_conf *conf,
1318 u32 changes)
1319 {
1320 struct adm8211_priv *priv = dev->priv;
1321
1322 if (!(changes & BSS_CHANGED_BSSID))
1323 return;
1324
1325 if (memcmp(conf->bssid, priv->bssid, ETH_ALEN)) {
1326 adm8211_set_bssid(dev, conf->bssid);
1327 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1328 }
1329 }
1330
1331 static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw,
1332 int mc_count, struct dev_addr_list *mclist)
1333 {
1334 unsigned int bit_nr, i;
1335 u32 mc_filter[2];
1336
1337 mc_filter[1] = mc_filter[0] = 0;
1338
1339 for (i = 0; i < mc_count; i++) {
1340 if (!mclist)
1341 break;
1342 bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
1343
1344 bit_nr &= 0x3F;
1345 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1346 mclist = mclist->next;
1347 }
1348
1349 return mc_filter[0] | ((u64)(mc_filter[1]) << 32);
1350 }
1351
1352 static void adm8211_configure_filter(struct ieee80211_hw *dev,
1353 unsigned int changed_flags,
1354 unsigned int *total_flags,
1355 u64 multicast)
1356 {
1357 static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1358 struct adm8211_priv *priv = dev->priv;
1359 unsigned int new_flags;
1360 u32 mc_filter[2];
1361
1362 mc_filter[0] = multicast;
1363 mc_filter[1] = multicast >> 32;
1364
1365 new_flags = 0;
1366
1367 if (*total_flags & FIF_PROMISC_IN_BSS) {
1368 new_flags |= FIF_PROMISC_IN_BSS;
1369 priv->nar |= ADM8211_NAR_PR;
1370 priv->nar &= ~ADM8211_NAR_MM;
1371 mc_filter[1] = mc_filter[0] = ~0;
1372 } else if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) {
1373 new_flags |= FIF_ALLMULTI;
1374 priv->nar &= ~ADM8211_NAR_PR;
1375 priv->nar |= ADM8211_NAR_MM;
1376 mc_filter[1] = mc_filter[0] = ~0;
1377 } else {
1378 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
1379 }
1380
1381 ADM8211_IDLE_RX();
1382
1383 ADM8211_CSR_WRITE(MAR0, mc_filter[0]);
1384 ADM8211_CSR_WRITE(MAR1, mc_filter[1]);
1385 ADM8211_CSR_READ(NAR);
1386
1387 if (priv->nar & ADM8211_NAR_PR)
1388 dev->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1389 else
1390 dev->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1391
1392 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1393 adm8211_set_bssid(dev, bcast);
1394 else
1395 adm8211_set_bssid(dev, priv->bssid);
1396
1397 ADM8211_RESTORE();
1398
1399 *total_flags = new_flags;
1400 }
1401
1402 static int adm8211_add_interface(struct ieee80211_hw *dev,
1403 struct ieee80211_if_init_conf *conf)
1404 {
1405 struct adm8211_priv *priv = dev->priv;
1406 if (priv->mode != NL80211_IFTYPE_MONITOR)
1407 return -EOPNOTSUPP;
1408
1409 switch (conf->type) {
1410 case NL80211_IFTYPE_STATION:
1411 priv->mode = conf->type;
1412 break;
1413 default:
1414 return -EOPNOTSUPP;
1415 }
1416
1417 ADM8211_IDLE();
1418
1419 ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)conf->mac_addr));
1420 ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(conf->mac_addr + 4)));
1421
1422 adm8211_update_mode(dev);
1423
1424 ADM8211_RESTORE();
1425
1426 return 0;
1427 }
1428
1429 static void adm8211_remove_interface(struct ieee80211_hw *dev,
1430 struct ieee80211_if_init_conf *conf)
1431 {
1432 struct adm8211_priv *priv = dev->priv;
1433 priv->mode = NL80211_IFTYPE_MONITOR;
1434 }
1435
1436 static int adm8211_init_rings(struct ieee80211_hw *dev)
1437 {
1438 struct adm8211_priv *priv = dev->priv;
1439 struct adm8211_desc *desc = NULL;
1440 struct adm8211_rx_ring_info *rx_info;
1441 struct adm8211_tx_ring_info *tx_info;
1442 unsigned int i;
1443
1444 for (i = 0; i < priv->rx_ring_size; i++) {
1445 desc = &priv->rx_ring[i];
1446 desc->status = 0;
1447 desc->length = cpu_to_le32(RX_PKT_SIZE);
1448 priv->rx_buffers[i].skb = NULL;
1449 }
1450 /* Mark the end of RX ring; hw returns to base address after this
1451 * descriptor */
1452 desc->length |= cpu_to_le32(RDES1_CONTROL_RER);
1453
1454 for (i = 0; i < priv->rx_ring_size; i++) {
1455 desc = &priv->rx_ring[i];
1456 rx_info = &priv->rx_buffers[i];
1457
1458 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE);
1459 if (rx_info->skb == NULL)
1460 break;
1461 rx_info->mapping = pci_map_single(priv->pdev,
1462 skb_tail_pointer(rx_info->skb),
1463 RX_PKT_SIZE,
1464 PCI_DMA_FROMDEVICE);
1465 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1466 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1467 }
1468
1469 /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1470 for (i = 0; i < priv->tx_ring_size; i++) {
1471 desc = &priv->tx_ring[i];
1472 tx_info = &priv->tx_buffers[i];
1473
1474 tx_info->skb = NULL;
1475 tx_info->mapping = 0;
1476 desc->status = 0;
1477 }
1478 desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1479
1480 priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1481 ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1482 ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1483
1484 return 0;
1485 }
1486
1487 static void adm8211_free_rings(struct ieee80211_hw *dev)
1488 {
1489 struct adm8211_priv *priv = dev->priv;
1490 unsigned int i;
1491
1492 for (i = 0; i < priv->rx_ring_size; i++) {
1493 if (!priv->rx_buffers[i].skb)
1494 continue;
1495
1496 pci_unmap_single(
1497 priv->pdev,
1498 priv->rx_buffers[i].mapping,
1499 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
1500
1501 dev_kfree_skb(priv->rx_buffers[i].skb);
1502 }
1503
1504 for (i = 0; i < priv->tx_ring_size; i++) {
1505 if (!priv->tx_buffers[i].skb)
1506 continue;
1507
1508 pci_unmap_single(priv->pdev,
1509 priv->tx_buffers[i].mapping,
1510 priv->tx_buffers[i].skb->len,
1511 PCI_DMA_TODEVICE);
1512
1513 dev_kfree_skb(priv->tx_buffers[i].skb);
1514 }
1515 }
1516
1517 static int adm8211_start(struct ieee80211_hw *dev)
1518 {
1519 struct adm8211_priv *priv = dev->priv;
1520 int retval;
1521
1522 /* Power up MAC and RF chips */
1523 retval = adm8211_hw_reset(dev);
1524 if (retval) {
1525 printk(KERN_ERR "%s: hardware reset failed\n",
1526 wiphy_name(dev->wiphy));
1527 goto fail;
1528 }
1529
1530 retval = adm8211_init_rings(dev);
1531 if (retval) {
1532 printk(KERN_ERR "%s: failed to initialize rings\n",
1533 wiphy_name(dev->wiphy));
1534 goto fail;
1535 }
1536
1537 /* Init hardware */
1538 adm8211_hw_init(dev);
1539 adm8211_rf_set_channel(dev, priv->channel);
1540
1541 retval = request_irq(priv->pdev->irq, &adm8211_interrupt,
1542 IRQF_SHARED, "adm8211", dev);
1543 if (retval) {
1544 printk(KERN_ERR "%s: failed to register IRQ handler\n",
1545 wiphy_name(dev->wiphy));
1546 goto fail;
1547 }
1548
1549 ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1550 ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1551 ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1552 priv->mode = NL80211_IFTYPE_MONITOR;
1553 adm8211_update_mode(dev);
1554 ADM8211_CSR_WRITE(RDR, 0);
1555
1556 adm8211_set_interval(dev, 100, 10);
1557 return 0;
1558
1559 fail:
1560 return retval;
1561 }
1562
1563 static void adm8211_stop(struct ieee80211_hw *dev)
1564 {
1565 struct adm8211_priv *priv = dev->priv;
1566
1567 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1568 priv->nar = 0;
1569 ADM8211_CSR_WRITE(NAR, 0);
1570 ADM8211_CSR_WRITE(IER, 0);
1571 ADM8211_CSR_READ(NAR);
1572
1573 free_irq(priv->pdev->irq, dev);
1574
1575 adm8211_free_rings(dev);
1576 }
1577
1578 static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
1579 int plcp_signal, int short_preamble)
1580 {
1581 /* Alternative calculation from NetBSD: */
1582
1583 /* IEEE 802.11b durations for DSSS PHY in microseconds */
1584 #define IEEE80211_DUR_DS_LONG_PREAMBLE 144
1585 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
1586 #define IEEE80211_DUR_DS_FAST_PLCPHDR 24
1587 #define IEEE80211_DUR_DS_SLOW_PLCPHDR 48
1588 #define IEEE80211_DUR_DS_SLOW_ACK 112
1589 #define IEEE80211_DUR_DS_FAST_ACK 56
1590 #define IEEE80211_DUR_DS_SLOW_CTS 112
1591 #define IEEE80211_DUR_DS_FAST_CTS 56
1592 #define IEEE80211_DUR_DS_SLOT 20
1593 #define IEEE80211_DUR_DS_SIFS 10
1594
1595 int remainder;
1596
1597 *dur = (80 * (24 + payload_len) + plcp_signal - 1)
1598 / plcp_signal;
1599
1600 if (plcp_signal <= PLCP_SIGNAL_2M)
1601 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
1602 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1603 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1604 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1605 IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
1606 else
1607 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
1608 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1609 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1610 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1611 IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
1612
1613 /* lengthen duration if long preamble */
1614 if (!short_preamble)
1615 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
1616 IEEE80211_DUR_DS_SHORT_PREAMBLE) +
1617 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
1618 IEEE80211_DUR_DS_FAST_PLCPHDR);
1619
1620
1621 *plcp = (80 * len) / plcp_signal;
1622 remainder = (80 * len) % plcp_signal;
1623 if (plcp_signal == PLCP_SIGNAL_11M &&
1624 remainder <= 30 && remainder > 0)
1625 *plcp = (*plcp | 0x8000) + 1;
1626 else if (remainder)
1627 (*plcp)++;
1628 }
1629
1630 /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
1631 static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1632 u16 plcp_signal,
1633 size_t hdrlen)
1634 {
1635 struct adm8211_priv *priv = dev->priv;
1636 unsigned long flags;
1637 dma_addr_t mapping;
1638 unsigned int entry;
1639 u32 flag;
1640
1641 mapping = pci_map_single(priv->pdev, skb->data, skb->len,
1642 PCI_DMA_TODEVICE);
1643
1644 spin_lock_irqsave(&priv->lock, flags);
1645
1646 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1647 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1648 else
1649 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1650
1651 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1652 ieee80211_stop_queue(dev, 0);
1653
1654 entry = priv->cur_tx % priv->tx_ring_size;
1655
1656 priv->tx_buffers[entry].skb = skb;
1657 priv->tx_buffers[entry].mapping = mapping;
1658 priv->tx_buffers[entry].hdrlen = hdrlen;
1659 priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
1660
1661 if (entry == priv->tx_ring_size - 1)
1662 flag |= TDES1_CONTROL_TER;
1663 priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
1664
1665 /* Set TX rate (SIGNAL field in PLCP PPDU format) */
1666 flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
1667 priv->tx_ring[entry].status = cpu_to_le32(flag);
1668
1669 priv->cur_tx++;
1670
1671 spin_unlock_irqrestore(&priv->lock, flags);
1672
1673 /* Trigger transmit poll */
1674 ADM8211_CSR_WRITE(TDR, 0);
1675 }
1676
1677 /* Put adm8211_tx_hdr on skb and transmit */
1678 static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1679 {
1680 struct adm8211_tx_hdr *txhdr;
1681 size_t payload_len, hdrlen;
1682 int plcp, dur, len, plcp_signal, short_preamble;
1683 struct ieee80211_hdr *hdr;
1684 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1685 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
1686 u8 rc_flags;
1687
1688 rc_flags = info->control.rates[0].flags;
1689 short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
1690 plcp_signal = txrate->bitrate;
1691
1692 hdr = (struct ieee80211_hdr *)skb->data;
1693 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1694 memcpy(skb->cb, skb->data, hdrlen);
1695 hdr = (struct ieee80211_hdr *)skb->cb;
1696 skb_pull(skb, hdrlen);
1697 payload_len = skb->len;
1698
1699 txhdr = (struct adm8211_tx_hdr *) skb_push(skb, sizeof(*txhdr));
1700 memset(txhdr, 0, sizeof(*txhdr));
1701 memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
1702 txhdr->signal = plcp_signal;
1703 txhdr->frame_body_size = cpu_to_le16(payload_len);
1704 txhdr->frame_control = hdr->frame_control;
1705
1706 len = hdrlen + payload_len + FCS_LEN;
1707
1708 txhdr->frag = cpu_to_le16(0x0FFF);
1709 adm8211_calc_durations(&dur, &plcp, payload_len,
1710 len, plcp_signal, short_preamble);
1711 txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1712 txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1713 txhdr->dur_frag_head = cpu_to_le16(dur);
1714 txhdr->dur_frag_tail = cpu_to_le16(dur);
1715
1716 txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1717
1718 if (short_preamble)
1719 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1720
1721 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1722 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1723
1724 txhdr->retry_limit = info->control.rates[0].count;
1725
1726 adm8211_tx_raw(dev, skb, plcp_signal, hdrlen);
1727
1728 return NETDEV_TX_OK;
1729 }
1730
1731 static int adm8211_alloc_rings(struct ieee80211_hw *dev)
1732 {
1733 struct adm8211_priv *priv = dev->priv;
1734 unsigned int ring_size;
1735
1736 priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
1737 sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
1738 if (!priv->rx_buffers)
1739 return -ENOMEM;
1740
1741 priv->tx_buffers = (void *)priv->rx_buffers +
1742 sizeof(*priv->rx_buffers) * priv->rx_ring_size;
1743
1744 /* Allocate TX/RX descriptors */
1745 ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
1746 sizeof(struct adm8211_desc) * priv->tx_ring_size;
1747 priv->rx_ring = pci_alloc_consistent(priv->pdev, ring_size,
1748 &priv->rx_ring_dma);
1749
1750 if (!priv->rx_ring) {
1751 kfree(priv->rx_buffers);
1752 priv->rx_buffers = NULL;
1753 priv->tx_buffers = NULL;
1754 return -ENOMEM;
1755 }
1756
1757 priv->tx_ring = (struct adm8211_desc *)(priv->rx_ring +
1758 priv->rx_ring_size);
1759 priv->tx_ring_dma = priv->rx_ring_dma +
1760 sizeof(struct adm8211_desc) * priv->rx_ring_size;
1761
1762 return 0;
1763 }
1764
1765 static const struct ieee80211_ops adm8211_ops = {
1766 .tx = adm8211_tx,
1767 .start = adm8211_start,
1768 .stop = adm8211_stop,
1769 .add_interface = adm8211_add_interface,
1770 .remove_interface = adm8211_remove_interface,
1771 .config = adm8211_config,
1772 .bss_info_changed = adm8211_bss_info_changed,
1773 .prepare_multicast = adm8211_prepare_multicast,
1774 .configure_filter = adm8211_configure_filter,
1775 .get_stats = adm8211_get_stats,
1776 .get_tx_stats = adm8211_get_tx_stats,
1777 .get_tsf = adm8211_get_tsft
1778 };
1779
1780 static int __devinit adm8211_probe(struct pci_dev *pdev,
1781 const struct pci_device_id *id)
1782 {
1783 struct ieee80211_hw *dev;
1784 struct adm8211_priv *priv;
1785 unsigned long mem_addr, mem_len;
1786 unsigned int io_addr, io_len;
1787 int err;
1788 u32 reg;
1789 u8 perm_addr[ETH_ALEN];
1790
1791 err = pci_enable_device(pdev);
1792 if (err) {
1793 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1794 pci_name(pdev));
1795 return err;
1796 }
1797
1798 io_addr = pci_resource_start(pdev, 0);
1799 io_len = pci_resource_len(pdev, 0);
1800 mem_addr = pci_resource_start(pdev, 1);
1801 mem_len = pci_resource_len(pdev, 1);
1802 if (io_len < 256 || mem_len < 1024) {
1803 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1804 pci_name(pdev));
1805 goto err_disable_pdev;
1806 }
1807
1808
1809 /* check signature */
1810 pci_read_config_dword(pdev, 0x80 /* CR32 */, &reg);
1811 if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1812 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1813 pci_name(pdev), reg);
1814 goto err_disable_pdev;
1815 }
1816
1817 err = pci_request_regions(pdev, "adm8211");
1818 if (err) {
1819 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1820 pci_name(pdev));
1821 return err; /* someone else grabbed it? don't disable it */
1822 }
1823
1824 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
1825 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1826 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1827 pci_name(pdev));
1828 goto err_free_reg;
1829 }
1830
1831 pci_set_master(pdev);
1832
1833 dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1834 if (!dev) {
1835 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1836 pci_name(pdev));
1837 err = -ENOMEM;
1838 goto err_free_reg;
1839 }
1840 priv = dev->priv;
1841 priv->pdev = pdev;
1842
1843 spin_lock_init(&priv->lock);
1844
1845 SET_IEEE80211_DEV(dev, &pdev->dev);
1846
1847 pci_set_drvdata(pdev, dev);
1848
1849 priv->map = pci_iomap(pdev, 1, mem_len);
1850 if (!priv->map)
1851 priv->map = pci_iomap(pdev, 0, io_len);
1852
1853 if (!priv->map) {
1854 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1855 pci_name(pdev));
1856 goto err_free_dev;
1857 }
1858
1859 priv->rx_ring_size = rx_ring_size;
1860 priv->tx_ring_size = tx_ring_size;
1861
1862 if (adm8211_alloc_rings(dev)) {
1863 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1864 pci_name(pdev));
1865 goto err_iounmap;
1866 }
1867
1868 *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0));
1869 *(__le16 *)&perm_addr[4] =
1870 cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF);
1871
1872 if (!is_valid_ether_addr(perm_addr)) {
1873 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1874 pci_name(pdev));
1875 random_ether_addr(perm_addr);
1876 }
1877 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1878
1879 dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1880 /* dev->flags = IEEE80211_HW_RX_INCLUDES_FCS in promisc mode */
1881 dev->flags = IEEE80211_HW_SIGNAL_UNSPEC;
1882 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1883
1884 dev->channel_change_time = 1000;
1885 dev->max_signal = 100; /* FIXME: find better value */
1886
1887 dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1888
1889 priv->retry_limit = 3;
1890 priv->ant_power = 0x40;
1891 priv->tx_power = 0x40;
1892 priv->lpf_cutoff = 0xFF;
1893 priv->lnags_threshold = 0xFF;
1894 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1895
1896 /* Power-on issue. EEPROM won't read correctly without */
1897 if (pdev->revision >= ADM8211_REV_BA) {
1898 ADM8211_CSR_WRITE(FRCTL, 0);
1899 ADM8211_CSR_READ(FRCTL);
1900 ADM8211_CSR_WRITE(FRCTL, 1);
1901 ADM8211_CSR_READ(FRCTL);
1902 msleep(100);
1903 }
1904
1905 err = adm8211_read_eeprom(dev);
1906 if (err) {
1907 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1908 pci_name(pdev));
1909 goto err_free_desc;
1910 }
1911
1912 priv->channel = 1;
1913
1914 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1915
1916 err = ieee80211_register_hw(dev);
1917 if (err) {
1918 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1919 pci_name(pdev));
1920 goto err_free_desc;
1921 }
1922
1923 printk(KERN_INFO "%s: hwaddr %pM, Rev 0x%02x\n",
1924 wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1925 pdev->revision);
1926
1927 return 0;
1928
1929 err_free_desc:
1930 pci_free_consistent(pdev,
1931 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1932 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1933 priv->rx_ring, priv->rx_ring_dma);
1934 kfree(priv->rx_buffers);
1935
1936 err_iounmap:
1937 pci_iounmap(pdev, priv->map);
1938
1939 err_free_dev:
1940 pci_set_drvdata(pdev, NULL);
1941 ieee80211_free_hw(dev);
1942
1943 err_free_reg:
1944 pci_release_regions(pdev);
1945
1946 err_disable_pdev:
1947 pci_disable_device(pdev);
1948 return err;
1949 }
1950
1951
1952 static void __devexit adm8211_remove(struct pci_dev *pdev)
1953 {
1954 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1955 struct adm8211_priv *priv;
1956
1957 if (!dev)
1958 return;
1959
1960 ieee80211_unregister_hw(dev);
1961
1962 priv = dev->priv;
1963
1964 pci_free_consistent(pdev,
1965 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1966 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1967 priv->rx_ring, priv->rx_ring_dma);
1968
1969 kfree(priv->rx_buffers);
1970 kfree(priv->eeprom);
1971 pci_iounmap(pdev, priv->map);
1972 pci_release_regions(pdev);
1973 pci_disable_device(pdev);
1974 ieee80211_free_hw(dev);
1975 }
1976
1977
1978 #ifdef CONFIG_PM
1979 static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
1980 {
1981 pci_save_state(pdev);
1982 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1983 return 0;
1984 }
1985
1986 static int adm8211_resume(struct pci_dev *pdev)
1987 {
1988 pci_set_power_state(pdev, PCI_D0);
1989 pci_restore_state(pdev);
1990 return 0;
1991 }
1992 #endif /* CONFIG_PM */
1993
1994
1995 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
1996
1997 /* TODO: implement enable_wake */
1998 static struct pci_driver adm8211_driver = {
1999 .name = "adm8211",
2000 .id_table = adm8211_pci_id_table,
2001 .probe = adm8211_probe,
2002 .remove = __devexit_p(adm8211_remove),
2003 #ifdef CONFIG_PM
2004 .suspend = adm8211_suspend,
2005 .resume = adm8211_resume,
2006 #endif /* CONFIG_PM */
2007 };
2008
2009
2010
2011 static int __init adm8211_init(void)
2012 {
2013 return pci_register_driver(&adm8211_driver);
2014 }
2015
2016
2017 static void __exit adm8211_exit(void)
2018 {
2019 pci_unregister_driver(&adm8211_driver);
2020 }
2021
2022
2023 module_init(adm8211_init);
2024 module_exit(adm8211_exit);
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