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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/interrupt.h>
19#include <linux/if.h>
20#include <linux/skbuff.h>
21#include <linux/slab.h>
22#include <linux/etherdevice.h>
23#include <linux/pci.h>
24#include <linux/delay.h>
25#include <linux/crc32.h>
26#include <linux/eeprom_93cx6.h>
27#include <linux/module.h>
28#include <net/mac80211.h>
29
30#include "adm8211.h"
31
32MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
33MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");
34MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
35MODULE_SUPPORTED_DEVICE("ADM8211");
36MODULE_LICENSE("GPL");
37
38static unsigned int tx_ring_size __read_mostly = 16;
39static unsigned int rx_ring_size __read_mostly = 16;
40
41module_param(tx_ring_size, uint, 0);
42module_param(rx_ring_size, uint, 0);
43
44static DEFINE_PCI_DEVICE_TABLE(adm8211_pci_id_table) = {
45 /* ADMtek ADM8211 */
46 { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
47 { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
48 { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
49 { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
50 { 0 }
51};
52
53static struct ieee80211_rate adm8211_rates[] = {
54 { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
55 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
56 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
57 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
58 { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */
59};
60
61static const struct ieee80211_channel adm8211_channels[] = {
62 { .center_freq = 2412},
63 { .center_freq = 2417},
64 { .center_freq = 2422},
65 { .center_freq = 2427},
66 { .center_freq = 2432},
67 { .center_freq = 2437},
68 { .center_freq = 2442},
69 { .center_freq = 2447},
70 { .center_freq = 2452},
71 { .center_freq = 2457},
72 { .center_freq = 2462},
73 { .center_freq = 2467},
74 { .center_freq = 2472},
75 { .center_freq = 2484},
76};
77
78
79static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
80{
81 struct adm8211_priv *priv = eeprom->data;
82 u32 reg = ADM8211_CSR_READ(SPR);
83
84 eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
85 eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
86 eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
87 eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
88}
89
90static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
91{
92 struct adm8211_priv *priv = eeprom->data;
93 u32 reg = 0x4000 | ADM8211_SPR_SRS;
94
95 if (eeprom->reg_data_in)
96 reg |= ADM8211_SPR_SDI;
97 if (eeprom->reg_data_out)
98 reg |= ADM8211_SPR_SDO;
99 if (eeprom->reg_data_clock)
100 reg |= ADM8211_SPR_SCLK;
101 if (eeprom->reg_chip_select)
102 reg |= ADM8211_SPR_SCS;
103
104 ADM8211_CSR_WRITE(SPR, reg);
105 ADM8211_CSR_READ(SPR); /* eeprom_delay */
106}
107
108static int adm8211_read_eeprom(struct ieee80211_hw *dev)
109{
110 struct adm8211_priv *priv = dev->priv;
111 unsigned int words, i;
112 struct ieee80211_chan_range chan_range;
113 u16 cr49;
114 struct eeprom_93cx6 eeprom = {
115 .data = priv,
116 .register_read = adm8211_eeprom_register_read,
117 .register_write = adm8211_eeprom_register_write
118 };
119
120 if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
121 /* 256 * 16-bit = 512 bytes */
122 eeprom.width = PCI_EEPROM_WIDTH_93C66;
123 words = 256;
124 } else {
125 /* 64 * 16-bit = 128 bytes */
126 eeprom.width = PCI_EEPROM_WIDTH_93C46;
127 words = 64;
128 }
129
130 priv->eeprom_len = words * 2;
131 priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
132 if (!priv->eeprom)
133 return -ENOMEM;
134
135 eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words);
136
137 cr49 = le16_to_cpu(priv->eeprom->cr49);
138 priv->rf_type = (cr49 >> 3) & 0x7;
139 switch (priv->rf_type) {
140 case ADM8211_TYPE_INTERSIL:
141 case ADM8211_TYPE_RFMD:
142 case ADM8211_TYPE_MARVEL:
143 case ADM8211_TYPE_AIROHA:
144 case ADM8211_TYPE_ADMTEK:
145 break;
146
147 default:
148 if (priv->pdev->revision < ADM8211_REV_CA)
149 priv->rf_type = ADM8211_TYPE_RFMD;
150 else
151 priv->rf_type = ADM8211_TYPE_AIROHA;
152
153 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
154 pci_name(priv->pdev), (cr49 >> 3) & 0x7);
155 }
156
157 priv->bbp_type = cr49 & 0x7;
158 switch (priv->bbp_type) {
159 case ADM8211_TYPE_INTERSIL:
160 case ADM8211_TYPE_RFMD:
161 case ADM8211_TYPE_MARVEL:
162 case ADM8211_TYPE_AIROHA:
163 case ADM8211_TYPE_ADMTEK:
164 break;
165 default:
166 if (priv->pdev->revision < ADM8211_REV_CA)
167 priv->bbp_type = ADM8211_TYPE_RFMD;
168 else
169 priv->bbp_type = ADM8211_TYPE_ADMTEK;
170
171 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
172 pci_name(priv->pdev), cr49 >> 3);
173 }
174
175 if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
176 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
177 pci_name(priv->pdev), priv->eeprom->country_code);
178
179 chan_range = cranges[2];
180 } else
181 chan_range = cranges[priv->eeprom->country_code];
182
183 printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
184 pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
185
186 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels));
187
188 memcpy(priv->channels, adm8211_channels, sizeof(priv->channels));
189 priv->band.channels = priv->channels;
190 priv->band.n_channels = ARRAY_SIZE(adm8211_channels);
191 priv->band.bitrates = adm8211_rates;
192 priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates);
193
194 for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
195 if (i < chan_range.min || i > chan_range.max)
196 priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED;
197
198 switch (priv->eeprom->specific_bbptype) {
199 case ADM8211_BBP_RFMD3000:
200 case ADM8211_BBP_RFMD3002:
201 case ADM8211_BBP_ADM8011:
202 priv->specific_bbptype = priv->eeprom->specific_bbptype;
203 break;
204
205 default:
206 if (priv->pdev->revision < ADM8211_REV_CA)
207 priv->specific_bbptype = ADM8211_BBP_RFMD3000;
208 else
209 priv->specific_bbptype = ADM8211_BBP_ADM8011;
210
211 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
212 pci_name(priv->pdev), priv->eeprom->specific_bbptype);
213 }
214
215 switch (priv->eeprom->specific_rftype) {
216 case ADM8211_RFMD2948:
217 case ADM8211_RFMD2958:
218 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
219 case ADM8211_MAX2820:
220 case ADM8211_AL2210L:
221 priv->transceiver_type = priv->eeprom->specific_rftype;
222 break;
223
224 default:
225 if (priv->pdev->revision == ADM8211_REV_BA)
226 priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
227 else if (priv->pdev->revision == ADM8211_REV_CA)
228 priv->transceiver_type = ADM8211_AL2210L;
229 else if (priv->pdev->revision == ADM8211_REV_AB)
230 priv->transceiver_type = ADM8211_RFMD2948;
231
232 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
233 pci_name(priv->pdev), priv->eeprom->specific_rftype);
234
235 break;
236 }
237
238 printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
239 "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
240 priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
241
242 return 0;
243}
244
245static inline void adm8211_write_sram(struct ieee80211_hw *dev,
246 u32 addr, u32 data)
247{
248 struct adm8211_priv *priv = dev->priv;
249
250 ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
251 (priv->pdev->revision < ADM8211_REV_BA ?
252 0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
253 ADM8211_CSR_READ(WEPCTL);
254 msleep(1);
255
256 ADM8211_CSR_WRITE(WESK, data);
257 ADM8211_CSR_READ(WESK);
258 msleep(1);
259}
260
261static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
262 unsigned int addr, u8 *buf,
263 unsigned int len)
264{
265 struct adm8211_priv *priv = dev->priv;
266 u32 reg = ADM8211_CSR_READ(WEPCTL);
267 unsigned int i;
268
269 if (priv->pdev->revision < ADM8211_REV_BA) {
270 for (i = 0; i < len; i += 2) {
271 u16 val = buf[i] | (buf[i + 1] << 8);
272 adm8211_write_sram(dev, addr + i / 2, val);
273 }
274 } else {
275 for (i = 0; i < len; i += 4) {
276 u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
277 (buf[i + 2] << 16) | (buf[i + 3] << 24);
278 adm8211_write_sram(dev, addr + i / 4, val);
279 }
280 }
281
282 ADM8211_CSR_WRITE(WEPCTL, reg);
283}
284
285static void adm8211_clear_sram(struct ieee80211_hw *dev)
286{
287 struct adm8211_priv *priv = dev->priv;
288 u32 reg = ADM8211_CSR_READ(WEPCTL);
289 unsigned int addr;
290
291 for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
292 adm8211_write_sram(dev, addr, 0);
293
294 ADM8211_CSR_WRITE(WEPCTL, reg);
295}
296
297static int adm8211_get_stats(struct ieee80211_hw *dev,
298 struct ieee80211_low_level_stats *stats)
299{
300 struct adm8211_priv *priv = dev->priv;
301
302 memcpy(stats, &priv->stats, sizeof(*stats));
303
304 return 0;
305}
306
307static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
308{
309 struct adm8211_priv *priv = dev->priv;
310 unsigned int dirty_tx;
311
312 spin_lock(&priv->lock);
313
314 for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
315 unsigned int entry = dirty_tx % priv->tx_ring_size;
316 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
317 struct ieee80211_tx_info *txi;
318 struct adm8211_tx_ring_info *info;
319 struct sk_buff *skb;
320
321 if (status & TDES0_CONTROL_OWN ||
322 !(status & TDES0_CONTROL_DONE))
323 break;
324
325 info = &priv->tx_buffers[entry];
326 skb = info->skb;
327 txi = IEEE80211_SKB_CB(skb);
328
329 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
330
331 pci_unmap_single(priv->pdev, info->mapping,
332 info->skb->len, PCI_DMA_TODEVICE);
333
334 ieee80211_tx_info_clear_status(txi);
335
336 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
337 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
338 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
339 !(status & TDES0_STATUS_ES))
340 txi->flags |= IEEE80211_TX_STAT_ACK;
341
342 ieee80211_tx_status_irqsafe(dev, skb);
343
344 info->skb = NULL;
345 }
346
347 if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
348 ieee80211_wake_queue(dev, 0);
349
350 priv->dirty_tx = dirty_tx;
351 spin_unlock(&priv->lock);
352}
353
354
355static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
356{
357 struct adm8211_priv *priv = dev->priv;
358 unsigned int entry = priv->cur_rx % priv->rx_ring_size;
359 u32 status;
360 unsigned int pktlen;
361 struct sk_buff *skb, *newskb;
362 unsigned int limit = priv->rx_ring_size;
363 u8 rssi, rate;
364
365 while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
366 if (!limit--)
367 break;
368
369 status = le32_to_cpu(priv->rx_ring[entry].status);
370 rate = (status & RDES0_STATUS_RXDR) >> 12;
371 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
372 RDES1_STATUS_RSSI;
373
374 pktlen = status & RDES0_STATUS_FL;
375 if (pktlen > RX_PKT_SIZE) {
376 if (net_ratelimit())
377 wiphy_debug(dev->wiphy, "frame too long (%d)\n",
378 pktlen);
379 pktlen = RX_PKT_SIZE;
380 }
381
382 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
383 skb = NULL; /* old buffer will be reused */
384 /* TODO: update RX error stats */
385 /* TODO: check RDES0_STATUS_CRC*E */
386 } else if (pktlen < RX_COPY_BREAK) {
387 skb = dev_alloc_skb(pktlen);
388 if (skb) {
389 pci_dma_sync_single_for_cpu(
390 priv->pdev,
391 priv->rx_buffers[entry].mapping,
392 pktlen, PCI_DMA_FROMDEVICE);
393 memcpy(skb_put(skb, pktlen),
394 skb_tail_pointer(priv->rx_buffers[entry].skb),
395 pktlen);
396 pci_dma_sync_single_for_device(
397 priv->pdev,
398 priv->rx_buffers[entry].mapping,
399 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
400 }
401 } else {
402 newskb = dev_alloc_skb(RX_PKT_SIZE);
403 if (newskb) {
404 skb = priv->rx_buffers[entry].skb;
405 skb_put(skb, pktlen);
406 pci_unmap_single(
407 priv->pdev,
408 priv->rx_buffers[entry].mapping,
409 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
410 priv->rx_buffers[entry].skb = newskb;
411 priv->rx_buffers[entry].mapping =
412 pci_map_single(priv->pdev,
413 skb_tail_pointer(newskb),
414 RX_PKT_SIZE,
415 PCI_DMA_FROMDEVICE);
416 } else {
417 skb = NULL;
418 /* TODO: update rx dropped stats */
419 }
420
421 priv->rx_ring[entry].buffer1 =
422 cpu_to_le32(priv->rx_buffers[entry].mapping);
423 }
424
425 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
426 RDES0_STATUS_SQL);
427 priv->rx_ring[entry].length =
428 cpu_to_le32(RX_PKT_SIZE |
429 (entry == priv->rx_ring_size - 1 ?
430 RDES1_CONTROL_RER : 0));
431
432 if (skb) {
433 struct ieee80211_rx_status rx_status = {0};
434
435 if (priv->pdev->revision < ADM8211_REV_CA)
436 rx_status.signal = rssi;
437 else
438 rx_status.signal = 100 - rssi;
439
440 rx_status.rate_idx = rate;
441
442 rx_status.freq = adm8211_channels[priv->channel - 1].center_freq;
443 rx_status.band = IEEE80211_BAND_2GHZ;
444
445 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
446 ieee80211_rx_irqsafe(dev, skb);
447 }
448
449 entry = (++priv->cur_rx) % priv->rx_ring_size;
450 }
451
452 /* TODO: check LPC and update stats? */
453}
454
455
456static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
457{
458#define ADM8211_INT(x) \
459do { \
460 if (unlikely(stsr & ADM8211_STSR_ ## x)) \
461 wiphy_debug(dev->wiphy, "%s\n", #x); \
462} while (0)
463
464 struct ieee80211_hw *dev = dev_id;
465 struct adm8211_priv *priv = dev->priv;
466 u32 stsr = ADM8211_CSR_READ(STSR);
467 ADM8211_CSR_WRITE(STSR, stsr);
468 if (stsr == 0xffffffff)
469 return IRQ_HANDLED;
470
471 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
472 return IRQ_HANDLED;
473
474 if (stsr & ADM8211_STSR_RCI)
475 adm8211_interrupt_rci(dev);
476 if (stsr & ADM8211_STSR_TCI)
477 adm8211_interrupt_tci(dev);
478
479 ADM8211_INT(PCF);
480 ADM8211_INT(BCNTC);
481 ADM8211_INT(GPINT);
482 ADM8211_INT(ATIMTC);
483 ADM8211_INT(TSFTF);
484 ADM8211_INT(TSCZ);
485 ADM8211_INT(SQL);
486 ADM8211_INT(WEPTD);
487 ADM8211_INT(ATIME);
488 ADM8211_INT(TEIS);
489 ADM8211_INT(FBE);
490 ADM8211_INT(REIS);
491 ADM8211_INT(GPTT);
492 ADM8211_INT(RPS);
493 ADM8211_INT(RDU);
494 ADM8211_INT(TUF);
495 ADM8211_INT(TPS);
496
497 return IRQ_HANDLED;
498
499#undef ADM8211_INT
500}
501
502#define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
503static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \
504 u16 addr, u32 value) { \
505 struct adm8211_priv *priv = dev->priv; \
506 unsigned int i; \
507 u32 reg, bitbuf; \
508 \
509 value &= v_mask; \
510 addr &= a_mask; \
511 bitbuf = (value << v_shift) | (addr << a_shift); \
512 \
513 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \
514 ADM8211_CSR_READ(SYNRF); \
515 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \
516 ADM8211_CSR_READ(SYNRF); \
517 \
518 if (prewrite) { \
519 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \
520 ADM8211_CSR_READ(SYNRF); \
521 } \
522 \
523 for (i = 0; i <= bits; i++) { \
524 if (bitbuf & (1 << (bits - i))) \
525 reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \
526 else \
527 reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \
528 \
529 ADM8211_CSR_WRITE(SYNRF, reg); \
530 ADM8211_CSR_READ(SYNRF); \
531 \
532 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
533 ADM8211_CSR_READ(SYNRF); \
534 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
535 ADM8211_CSR_READ(SYNRF); \
536 } \
537 \
538 if (postwrite == 1) { \
539 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \
540 ADM8211_CSR_READ(SYNRF); \
541 } \
542 if (postwrite == 2) { \
543 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \
544 ADM8211_CSR_READ(SYNRF); \
545 } \
546 \
547 ADM8211_CSR_WRITE(SYNRF, 0); \
548 ADM8211_CSR_READ(SYNRF); \
549}
550
551WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1)
552WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1)
553WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
554WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2)
555
556#undef WRITE_SYN
557
558static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
559{
560 struct adm8211_priv *priv = dev->priv;
561 unsigned int timeout;
562 u32 reg;
563
564 timeout = 10;
565 while (timeout > 0) {
566 reg = ADM8211_CSR_READ(BBPCTL);
567 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
568 break;
569 timeout--;
570 msleep(2);
571 }
572
573 if (timeout == 0) {
574 wiphy_debug(dev->wiphy,
575 "adm8211_write_bbp(%d,%d) failed prewrite (reg=0x%08x)\n",
576 addr, data, reg);
577 return -ETIMEDOUT;
578 }
579
580 switch (priv->bbp_type) {
581 case ADM8211_TYPE_INTERSIL:
582 reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */
583 break;
584 case ADM8211_TYPE_RFMD:
585 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
586 (0x01 << 18);
587 break;
588 case ADM8211_TYPE_ADMTEK:
589 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
590 (0x05 << 18);
591 break;
592 }
593 reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
594
595 ADM8211_CSR_WRITE(BBPCTL, reg);
596
597 timeout = 10;
598 while (timeout > 0) {
599 reg = ADM8211_CSR_READ(BBPCTL);
600 if (!(reg & ADM8211_BBPCTL_WR))
601 break;
602 timeout--;
603 msleep(2);
604 }
605
606 if (timeout == 0) {
607 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
608 ~ADM8211_BBPCTL_WR);
609 wiphy_debug(dev->wiphy,
610 "adm8211_write_bbp(%d,%d) failed postwrite (reg=0x%08x)\n",
611 addr, data, reg);
612 return -ETIMEDOUT;
613 }
614
615 return 0;
616}
617
618static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
619{
620 static const u32 adm8211_rfmd2958_reg5[] =
621 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
622 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
623 static const u32 adm8211_rfmd2958_reg6[] =
624 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
625 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
626
627 struct adm8211_priv *priv = dev->priv;
628 u8 ant_power = priv->ant_power > 0x3F ?
629 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
630 u8 tx_power = priv->tx_power > 0x3F ?
631 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
632 u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
633 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
634 u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
635 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
636 u32 reg;
637
638 ADM8211_IDLE();
639
640 /* Program synthesizer to new channel */
641 switch (priv->transceiver_type) {
642 case ADM8211_RFMD2958:
643 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
644 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
645 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
646
647 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
648 adm8211_rfmd2958_reg5[chan - 1]);
649 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
650 adm8211_rfmd2958_reg6[chan - 1]);
651 break;
652
653 case ADM8211_RFMD2948:
654 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
655 SI4126_MAIN_XINDIV2);
656 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
657 SI4126_POWERDOWN_PDIB |
658 SI4126_POWERDOWN_PDRB);
659 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
660 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
661 (chan == 14 ?
662 2110 : (2033 + (chan * 5))));
663 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
664 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
665 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
666 break;
667
668 case ADM8211_MAX2820:
669 adm8211_rf_write_syn_max2820(dev, 0x3,
670 (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
671 break;
672
673 case ADM8211_AL2210L:
674 adm8211_rf_write_syn_al2210l(dev, 0x0,
675 (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
676 break;
677
678 default:
679 wiphy_debug(dev->wiphy, "unsupported transceiver type %d\n",
680 priv->transceiver_type);
681 break;
682 }
683
684 /* write BBP regs */
685 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
686
687 /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
688 /* TODO: remove if SMC 2635W doesn't need this */
689 if (priv->transceiver_type == ADM8211_RFMD2948) {
690 reg = ADM8211_CSR_READ(GPIO);
691 reg &= 0xfffc0000;
692 reg |= ADM8211_CSR_GPIO_EN0;
693 if (chan != 14)
694 reg |= ADM8211_CSR_GPIO_O0;
695 ADM8211_CSR_WRITE(GPIO, reg);
696 }
697
698 if (priv->transceiver_type == ADM8211_RFMD2958) {
699 /* set PCNT2 */
700 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
701 /* set PCNT1 P_DESIRED/MID_BIAS */
702 reg = le16_to_cpu(priv->eeprom->cr49);
703 reg >>= 13;
704 reg <<= 15;
705 reg |= ant_power << 9;
706 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
707 /* set TXRX TX_GAIN */
708 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
709 (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0));
710 } else {
711 reg = ADM8211_CSR_READ(PLCPHD);
712 reg &= 0xff00ffff;
713 reg |= tx_power << 18;
714 ADM8211_CSR_WRITE(PLCPHD, reg);
715 }
716
717 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
718 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
719 ADM8211_CSR_READ(SYNRF);
720 msleep(30);
721
722 /* RF3000 BBP */
723 if (priv->transceiver_type != ADM8211_RFMD2958)
724 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
725 tx_power<<2);
726 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
727 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
728 adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ?
729 priv->eeprom->cr28 : 0);
730 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
731
732 ADM8211_CSR_WRITE(SYNRF, 0);
733
734 /* Nothing to do for ADMtek BBP */
735 } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
736 wiphy_debug(dev->wiphy, "unsupported BBP type %d\n",
737 priv->bbp_type);
738
739 ADM8211_RESTORE();
740
741 /* update current channel for adhoc (and maybe AP mode) */
742 reg = ADM8211_CSR_READ(CAP0);
743 reg &= ~0xF;
744 reg |= chan;
745 ADM8211_CSR_WRITE(CAP0, reg);
746
747 return 0;
748}
749
750static void adm8211_update_mode(struct ieee80211_hw *dev)
751{
752 struct adm8211_priv *priv = dev->priv;
753
754 ADM8211_IDLE();
755
756 priv->soft_rx_crc = 0;
757 switch (priv->mode) {
758 case NL80211_IFTYPE_STATION:
759 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
760 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
761 break;
762 case NL80211_IFTYPE_ADHOC:
763 priv->nar &= ~ADM8211_NAR_PR;
764 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
765
766 /* don't trust the error bits on rev 0x20 and up in adhoc */
767 if (priv->pdev->revision >= ADM8211_REV_BA)
768 priv->soft_rx_crc = 1;
769 break;
770 case NL80211_IFTYPE_MONITOR:
771 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
772 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
773 break;
774 }
775
776 ADM8211_RESTORE();
777}
778
779static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
780{
781 struct adm8211_priv *priv = dev->priv;
782
783 switch (priv->transceiver_type) {
784 case ADM8211_RFMD2958:
785 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
786 /* comments taken from ADMtek vendor driver */
787
788 /* Reset RF2958 after power on */
789 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
790 /* Initialize RF VCO Core Bias to maximum */
791 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
792 /* Initialize IF PLL */
793 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
794 /* Initialize IF PLL Coarse Tuning */
795 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
796 /* Initialize RF PLL */
797 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
798 /* Initialize RF PLL Coarse Tuning */
799 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
800 /* Initialize TX gain and filter BW (R9) */
801 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
802 (priv->transceiver_type == ADM8211_RFMD2958 ?
803 0x10050 : 0x00050));
804 /* Initialize CAL register */
805 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
806 break;
807
808 case ADM8211_MAX2820:
809 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
810 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
811 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
812 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
813 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
814 break;
815
816 case ADM8211_AL2210L:
817 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
818 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
819 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
820 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
821 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
822 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
823 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
824 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
825 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
826 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
827 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
828 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
829 break;
830
831 case ADM8211_RFMD2948:
832 default:
833 break;
834 }
835}
836
837static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
838{
839 struct adm8211_priv *priv = dev->priv;
840 u32 reg;
841
842 /* write addresses */
843 if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
844 ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A);
845 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
846 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
847 } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
848 priv->bbp_type == ADM8211_TYPE_ADMTEK) {
849 /* check specific BBP type */
850 switch (priv->specific_bbptype) {
851 case ADM8211_BBP_RFMD3000:
852 case ADM8211_BBP_RFMD3002:
853 ADM8211_CSR_WRITE(MMIWA, 0x00009101);
854 ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
855 break;
856
857 case ADM8211_BBP_ADM8011:
858 ADM8211_CSR_WRITE(MMIWA, 0x00008903);
859 ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
860
861 reg = ADM8211_CSR_READ(BBPCTL);
862 reg &= ~ADM8211_BBPCTL_TYPE;
863 reg |= 0x5 << 18;
864 ADM8211_CSR_WRITE(BBPCTL, reg);
865 break;
866 }
867
868 switch (priv->pdev->revision) {
869 case ADM8211_REV_CA:
870 if (priv->transceiver_type == ADM8211_RFMD2958 ||
871 priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
872 priv->transceiver_type == ADM8211_RFMD2948)
873 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
874 else if (priv->transceiver_type == ADM8211_MAX2820 ||
875 priv->transceiver_type == ADM8211_AL2210L)
876 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
877 break;
878
879 case ADM8211_REV_BA:
880 reg = ADM8211_CSR_READ(MMIRD1);
881 reg &= 0x0000FFFF;
882 reg |= 0x7e100000;
883 ADM8211_CSR_WRITE(MMIRD1, reg);
884 break;
885
886 case ADM8211_REV_AB:
887 case ADM8211_REV_AF:
888 default:
889 ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
890 break;
891 }
892
893 /* For RFMD */
894 ADM8211_CSR_WRITE(MACTEST, 0x800);
895 }
896
897 adm8211_hw_init_syn(dev);
898
899 /* Set RF Power control IF pin to PE1+PHYRST# */
900 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
901 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
902 ADM8211_CSR_READ(SYNRF);
903 msleep(20);
904
905 /* write BBP regs */
906 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
907 /* RF3000 BBP */
908 /* another set:
909 * 11: c8
910 * 14: 14
911 * 15: 50 (chan 1..13; chan 14: d0)
912 * 1c: 00
913 * 1d: 84
914 */
915 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
916 /* antenna selection: diversity */
917 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
918 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
919 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
920 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
921
922 if (priv->eeprom->major_version < 2) {
923 adm8211_write_bbp(dev, 0x1c, 0x00);
924 adm8211_write_bbp(dev, 0x1d, 0x80);
925 } else {
926 if (priv->pdev->revision == ADM8211_REV_BA)
927 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
928 else
929 adm8211_write_bbp(dev, 0x1c, 0x00);
930
931 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
932 }
933 } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
934 /* reset baseband */
935 adm8211_write_bbp(dev, 0x00, 0xFF);
936 /* antenna selection: diversity */
937 adm8211_write_bbp(dev, 0x07, 0x0A);
938
939 /* TODO: find documentation for this */
940 switch (priv->transceiver_type) {
941 case ADM8211_RFMD2958:
942 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
943 adm8211_write_bbp(dev, 0x00, 0x00);
944 adm8211_write_bbp(dev, 0x01, 0x00);
945 adm8211_write_bbp(dev, 0x02, 0x00);
946 adm8211_write_bbp(dev, 0x03, 0x00);
947 adm8211_write_bbp(dev, 0x06, 0x0f);
948 adm8211_write_bbp(dev, 0x09, 0x00);
949 adm8211_write_bbp(dev, 0x0a, 0x00);
950 adm8211_write_bbp(dev, 0x0b, 0x00);
951 adm8211_write_bbp(dev, 0x0c, 0x00);
952 adm8211_write_bbp(dev, 0x0f, 0xAA);
953 adm8211_write_bbp(dev, 0x10, 0x8c);
954 adm8211_write_bbp(dev, 0x11, 0x43);
955 adm8211_write_bbp(dev, 0x18, 0x40);
956 adm8211_write_bbp(dev, 0x20, 0x23);
957 adm8211_write_bbp(dev, 0x21, 0x02);
958 adm8211_write_bbp(dev, 0x22, 0x28);
959 adm8211_write_bbp(dev, 0x23, 0x30);
960 adm8211_write_bbp(dev, 0x24, 0x2d);
961 adm8211_write_bbp(dev, 0x28, 0x35);
962 adm8211_write_bbp(dev, 0x2a, 0x8c);
963 adm8211_write_bbp(dev, 0x2b, 0x81);
964 adm8211_write_bbp(dev, 0x2c, 0x44);
965 adm8211_write_bbp(dev, 0x2d, 0x0A);
966 adm8211_write_bbp(dev, 0x29, 0x40);
967 adm8211_write_bbp(dev, 0x60, 0x08);
968 adm8211_write_bbp(dev, 0x64, 0x01);
969 break;
970
971 case ADM8211_MAX2820:
972 adm8211_write_bbp(dev, 0x00, 0x00);
973 adm8211_write_bbp(dev, 0x01, 0x00);
974 adm8211_write_bbp(dev, 0x02, 0x00);
975 adm8211_write_bbp(dev, 0x03, 0x00);
976 adm8211_write_bbp(dev, 0x06, 0x0f);
977 adm8211_write_bbp(dev, 0x09, 0x05);
978 adm8211_write_bbp(dev, 0x0a, 0x02);
979 adm8211_write_bbp(dev, 0x0b, 0x00);
980 adm8211_write_bbp(dev, 0x0c, 0x0f);
981 adm8211_write_bbp(dev, 0x0f, 0x55);
982 adm8211_write_bbp(dev, 0x10, 0x8d);
983 adm8211_write_bbp(dev, 0x11, 0x43);
984 adm8211_write_bbp(dev, 0x18, 0x4a);
985 adm8211_write_bbp(dev, 0x20, 0x20);
986 adm8211_write_bbp(dev, 0x21, 0x02);
987 adm8211_write_bbp(dev, 0x22, 0x23);
988 adm8211_write_bbp(dev, 0x23, 0x30);
989 adm8211_write_bbp(dev, 0x24, 0x2d);
990 adm8211_write_bbp(dev, 0x2a, 0x8c);
991 adm8211_write_bbp(dev, 0x2b, 0x81);
992 adm8211_write_bbp(dev, 0x2c, 0x44);
993 adm8211_write_bbp(dev, 0x29, 0x4a);
994 adm8211_write_bbp(dev, 0x60, 0x2b);
995 adm8211_write_bbp(dev, 0x64, 0x01);
996 break;
997
998 case ADM8211_AL2210L:
999 adm8211_write_bbp(dev, 0x00, 0x00);
1000 adm8211_write_bbp(dev, 0x01, 0x00);
1001 adm8211_write_bbp(dev, 0x02, 0x00);
1002 adm8211_write_bbp(dev, 0x03, 0x00);
1003 adm8211_write_bbp(dev, 0x06, 0x0f);
1004 adm8211_write_bbp(dev, 0x07, 0x05);
1005 adm8211_write_bbp(dev, 0x08, 0x03);
1006 adm8211_write_bbp(dev, 0x09, 0x00);
1007 adm8211_write_bbp(dev, 0x0a, 0x00);
1008 adm8211_write_bbp(dev, 0x0b, 0x00);
1009 adm8211_write_bbp(dev, 0x0c, 0x10);
1010 adm8211_write_bbp(dev, 0x0f, 0x55);
1011 adm8211_write_bbp(dev, 0x10, 0x8d);
1012 adm8211_write_bbp(dev, 0x11, 0x43);
1013 adm8211_write_bbp(dev, 0x18, 0x4a);
1014 adm8211_write_bbp(dev, 0x20, 0x20);
1015 adm8211_write_bbp(dev, 0x21, 0x02);
1016 adm8211_write_bbp(dev, 0x22, 0x23);
1017 adm8211_write_bbp(dev, 0x23, 0x30);
1018 adm8211_write_bbp(dev, 0x24, 0x2d);
1019 adm8211_write_bbp(dev, 0x2a, 0xaa);
1020 adm8211_write_bbp(dev, 0x2b, 0x81);
1021 adm8211_write_bbp(dev, 0x2c, 0x44);
1022 adm8211_write_bbp(dev, 0x29, 0xfa);
1023 adm8211_write_bbp(dev, 0x60, 0x2d);
1024 adm8211_write_bbp(dev, 0x64, 0x01);
1025 break;
1026
1027 case ADM8211_RFMD2948:
1028 break;
1029
1030 default:
1031 wiphy_debug(dev->wiphy, "unsupported transceiver %d\n",
1032 priv->transceiver_type);
1033 break;
1034 }
1035 } else
1036 wiphy_debug(dev->wiphy, "unsupported BBP %d\n", priv->bbp_type);
1037
1038 ADM8211_CSR_WRITE(SYNRF, 0);
1039
1040 /* Set RF CAL control source to MAC control */
1041 reg = ADM8211_CSR_READ(SYNCTL);
1042 reg |= ADM8211_SYNCTL_SELCAL;
1043 ADM8211_CSR_WRITE(SYNCTL, reg);
1044
1045 return 0;
1046}
1047
1048/* configures hw beacons/probe responses */
1049static int adm8211_set_rate(struct ieee80211_hw *dev)
1050{
1051 struct adm8211_priv *priv = dev->priv;
1052 u32 reg;
1053 int i = 0;
1054 u8 rate_buf[12] = {0};
1055
1056 /* write supported rates */
1057 if (priv->pdev->revision != ADM8211_REV_BA) {
1058 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1059 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1060 rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80;
1061 } else {
1062 /* workaround for rev BA specific bug */
1063 rate_buf[0] = 0x04;
1064 rate_buf[1] = 0x82;
1065 rate_buf[2] = 0x04;
1066 rate_buf[3] = 0x0b;
1067 rate_buf[4] = 0x16;
1068 }
1069
1070 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1071 ARRAY_SIZE(adm8211_rates) + 1);
1072
1073 reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1074 reg |= 1 << 15; /* short preamble */
1075 reg |= 110 << 24;
1076 ADM8211_CSR_WRITE(PLCPHD, reg);
1077
1078 /* MTMLT = 512 TU (max TX MSDU lifetime)
1079 * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1080 * SRTYLIM = 224 (short retry limit, TX header value is default) */
1081 ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1082
1083 return 0;
1084}
1085
1086static void adm8211_hw_init(struct ieee80211_hw *dev)
1087{
1088 struct adm8211_priv *priv = dev->priv;
1089 u32 reg;
1090 u8 cline;
1091
1092 reg = ADM8211_CSR_READ(PAR);
1093 reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1094 reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1095
1096 if (!pci_set_mwi(priv->pdev)) {
1097 reg |= 0x1 << 24;
1098 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1099
1100 switch (cline) {
1101 case 0x8: reg |= (0x1 << 14);
1102 break;
1103 case 0x16: reg |= (0x2 << 14);
1104 break;
1105 case 0x32: reg |= (0x3 << 14);
1106 break;
1107 default: reg |= (0x0 << 14);
1108 break;
1109 }
1110 }
1111
1112 ADM8211_CSR_WRITE(PAR, reg);
1113
1114 reg = ADM8211_CSR_READ(CSR_TEST1);
1115 reg &= ~(0xF << 28);
1116 reg |= (1 << 28) | (1 << 31);
1117 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1118
1119 /* lose link after 4 lost beacons */
1120 reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1121 ADM8211_CSR_WRITE(WCSR, reg);
1122
1123 /* Disable APM, enable receive FIFO threshold, and set drain receive
1124 * threshold to store-and-forward */
1125 reg = ADM8211_CSR_READ(CMDR);
1126 reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1127 reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1128 ADM8211_CSR_WRITE(CMDR, reg);
1129
1130 adm8211_set_rate(dev);
1131
1132 /* 4-bit values:
1133 * PWR1UP = 8 * 2 ms
1134 * PWR0PAPE = 8 us or 5 us
1135 * PWR1PAPE = 1 us or 3 us
1136 * PWR0TRSW = 5 us
1137 * PWR1TRSW = 12 us
1138 * PWR0PE2 = 13 us
1139 * PWR1PE2 = 1 us
1140 * PWR0TXPE = 8 or 6 */
1141 if (priv->pdev->revision < ADM8211_REV_CA)
1142 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1143 else
1144 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1145
1146 /* Enable store and forward for transmit */
1147 priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1148 ADM8211_CSR_WRITE(NAR, priv->nar);
1149
1150 /* Reset RF */
1151 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1152 ADM8211_CSR_READ(SYNRF);
1153 msleep(10);
1154 ADM8211_CSR_WRITE(SYNRF, 0);
1155 ADM8211_CSR_READ(SYNRF);
1156 msleep(5);
1157
1158 /* Set CFP Max Duration to 0x10 TU */
1159 reg = ADM8211_CSR_READ(CFPP);
1160 reg &= ~(0xffff << 8);
1161 reg |= 0x0010 << 8;
1162 ADM8211_CSR_WRITE(CFPP, reg);
1163
1164 /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1165 * TUCNT = 0x3ff - Tu counter 1024 us */
1166 ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1167
1168 /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1169 * DIFS=50 us, EIFS=100 us */
1170 if (priv->pdev->revision < ADM8211_REV_CA)
1171 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1172 (50 << 9) | 100);
1173 else
1174 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1175 (50 << 9) | 100);
1176
1177 /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1178 * RMRD = 2346 * 8 + 1 us (max RX duration) */
1179 ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1180
1181 /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1182 ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1183
1184 /* Initialize BBP (and SYN) */
1185 adm8211_hw_init_bbp(dev);
1186
1187 /* make sure interrupts are off */
1188 ADM8211_CSR_WRITE(IER, 0);
1189
1190 /* ACK interrupts */
1191 ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1192
1193 /* Setup WEP (turns it off for now) */
1194 reg = ADM8211_CSR_READ(MACTEST);
1195 reg &= ~(7 << 20);
1196 ADM8211_CSR_WRITE(MACTEST, reg);
1197
1198 reg = ADM8211_CSR_READ(WEPCTL);
1199 reg &= ~ADM8211_WEPCTL_WEPENABLE;
1200 reg |= ADM8211_WEPCTL_WEPRXBYP;
1201 ADM8211_CSR_WRITE(WEPCTL, reg);
1202
1203 /* Clear the missed-packet counter. */
1204 ADM8211_CSR_READ(LPC);
1205}
1206
1207static int adm8211_hw_reset(struct ieee80211_hw *dev)
1208{
1209 struct adm8211_priv *priv = dev->priv;
1210 u32 reg, tmp;
1211 int timeout = 100;
1212
1213 /* Power-on issue */
1214 /* TODO: check if this is necessary */
1215 ADM8211_CSR_WRITE(FRCTL, 0);
1216
1217 /* Reset the chip */
1218 tmp = ADM8211_CSR_READ(PAR);
1219 ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1220
1221 while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1222 msleep(50);
1223
1224 if (timeout <= 0)
1225 return -ETIMEDOUT;
1226
1227 ADM8211_CSR_WRITE(PAR, tmp);
1228
1229 if (priv->pdev->revision == ADM8211_REV_BA &&
1230 (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1231 priv->transceiver_type == ADM8211_RFMD2958)) {
1232 reg = ADM8211_CSR_READ(CSR_TEST1);
1233 reg |= (1 << 4) | (1 << 5);
1234 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1235 } else if (priv->pdev->revision == ADM8211_REV_CA) {
1236 reg = ADM8211_CSR_READ(CSR_TEST1);
1237 reg &= ~((1 << 4) | (1 << 5));
1238 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1239 }
1240
1241 ADM8211_CSR_WRITE(FRCTL, 0);
1242
1243 reg = ADM8211_CSR_READ(CSR_TEST0);
1244 reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1245 ADM8211_CSR_WRITE(CSR_TEST0, reg);
1246
1247 adm8211_clear_sram(dev);
1248
1249 return 0;
1250}
1251
1252static u64 adm8211_get_tsft(struct ieee80211_hw *dev,
1253 struct ieee80211_vif *vif)
1254{
1255 struct adm8211_priv *priv = dev->priv;
1256 u32 tsftl;
1257 u64 tsft;
1258
1259 tsftl = ADM8211_CSR_READ(TSFTL);
1260 tsft = ADM8211_CSR_READ(TSFTH);
1261 tsft <<= 32;
1262 tsft |= tsftl;
1263
1264 return tsft;
1265}
1266
1267static void adm8211_set_interval(struct ieee80211_hw *dev,
1268 unsigned short bi, unsigned short li)
1269{
1270 struct adm8211_priv *priv = dev->priv;
1271 u32 reg;
1272
1273 /* BP (beacon interval) = data->beacon_interval
1274 * LI (listen interval) = data->listen_interval (in beacon intervals) */
1275 reg = (bi << 16) | li;
1276 ADM8211_CSR_WRITE(BPLI, reg);
1277}
1278
1279static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
1280{
1281 struct adm8211_priv *priv = dev->priv;
1282 u32 reg;
1283
1284 ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
1285 reg = ADM8211_CSR_READ(ABDA1);
1286 reg &= 0x0000ffff;
1287 reg |= (bssid[4] << 16) | (bssid[5] << 24);
1288 ADM8211_CSR_WRITE(ABDA1, reg);
1289}
1290
1291static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
1292{
1293 struct adm8211_priv *priv = dev->priv;
1294 struct ieee80211_conf *conf = &dev->conf;
1295 int channel =
1296 ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
1297
1298 if (channel != priv->channel) {
1299 priv->channel = channel;
1300 adm8211_rf_set_channel(dev, priv->channel);
1301 }
1302
1303 return 0;
1304}
1305
1306static void adm8211_bss_info_changed(struct ieee80211_hw *dev,
1307 struct ieee80211_vif *vif,
1308 struct ieee80211_bss_conf *conf,
1309 u32 changes)
1310{
1311 struct adm8211_priv *priv = dev->priv;
1312
1313 if (!(changes & BSS_CHANGED_BSSID))
1314 return;
1315
1316 if (!ether_addr_equal(conf->bssid, priv->bssid)) {
1317 adm8211_set_bssid(dev, conf->bssid);
1318 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1319 }
1320}
1321
1322static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw,
1323 struct netdev_hw_addr_list *mc_list)
1324{
1325 unsigned int bit_nr;
1326 u32 mc_filter[2];
1327 struct netdev_hw_addr *ha;
1328
1329 mc_filter[1] = mc_filter[0] = 0;
1330
1331 netdev_hw_addr_list_for_each(ha, mc_list) {
1332 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1333
1334 bit_nr &= 0x3F;
1335 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1336 }
1337
1338 return mc_filter[0] | ((u64)(mc_filter[1]) << 32);
1339}
1340
1341static void adm8211_configure_filter(struct ieee80211_hw *dev,
1342 unsigned int changed_flags,
1343 unsigned int *total_flags,
1344 u64 multicast)
1345{
1346 static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1347 struct adm8211_priv *priv = dev->priv;
1348 unsigned int new_flags;
1349 u32 mc_filter[2];
1350
1351 mc_filter[0] = multicast;
1352 mc_filter[1] = multicast >> 32;
1353
1354 new_flags = 0;
1355
1356 if (*total_flags & FIF_PROMISC_IN_BSS) {
1357 new_flags |= FIF_PROMISC_IN_BSS;
1358 priv->nar |= ADM8211_NAR_PR;
1359 priv->nar &= ~ADM8211_NAR_MM;
1360 mc_filter[1] = mc_filter[0] = ~0;
1361 } else if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) {
1362 new_flags |= FIF_ALLMULTI;
1363 priv->nar &= ~ADM8211_NAR_PR;
1364 priv->nar |= ADM8211_NAR_MM;
1365 mc_filter[1] = mc_filter[0] = ~0;
1366 } else {
1367 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
1368 }
1369
1370 ADM8211_IDLE_RX();
1371
1372 ADM8211_CSR_WRITE(MAR0, mc_filter[0]);
1373 ADM8211_CSR_WRITE(MAR1, mc_filter[1]);
1374 ADM8211_CSR_READ(NAR);
1375
1376 if (priv->nar & ADM8211_NAR_PR)
1377 dev->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1378 else
1379 dev->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1380
1381 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1382 adm8211_set_bssid(dev, bcast);
1383 else
1384 adm8211_set_bssid(dev, priv->bssid);
1385
1386 ADM8211_RESTORE();
1387
1388 *total_flags = new_flags;
1389}
1390
1391static int adm8211_add_interface(struct ieee80211_hw *dev,
1392 struct ieee80211_vif *vif)
1393{
1394 struct adm8211_priv *priv = dev->priv;
1395 if (priv->mode != NL80211_IFTYPE_MONITOR)
1396 return -EOPNOTSUPP;
1397
1398 switch (vif->type) {
1399 case NL80211_IFTYPE_STATION:
1400 priv->mode = vif->type;
1401 break;
1402 default:
1403 return -EOPNOTSUPP;
1404 }
1405
1406 ADM8211_IDLE();
1407
1408 ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)vif->addr));
1409 ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(vif->addr + 4)));
1410
1411 adm8211_update_mode(dev);
1412
1413 ADM8211_RESTORE();
1414
1415 return 0;
1416}
1417
1418static void adm8211_remove_interface(struct ieee80211_hw *dev,
1419 struct ieee80211_vif *vif)
1420{
1421 struct adm8211_priv *priv = dev->priv;
1422 priv->mode = NL80211_IFTYPE_MONITOR;
1423}
1424
1425static int adm8211_init_rings(struct ieee80211_hw *dev)
1426{
1427 struct adm8211_priv *priv = dev->priv;
1428 struct adm8211_desc *desc = NULL;
1429 struct adm8211_rx_ring_info *rx_info;
1430 struct adm8211_tx_ring_info *tx_info;
1431 unsigned int i;
1432
1433 for (i = 0; i < priv->rx_ring_size; i++) {
1434 desc = &priv->rx_ring[i];
1435 desc->status = 0;
1436 desc->length = cpu_to_le32(RX_PKT_SIZE);
1437 priv->rx_buffers[i].skb = NULL;
1438 }
1439 /* Mark the end of RX ring; hw returns to base address after this
1440 * descriptor */
1441 desc->length |= cpu_to_le32(RDES1_CONTROL_RER);
1442
1443 for (i = 0; i < priv->rx_ring_size; i++) {
1444 desc = &priv->rx_ring[i];
1445 rx_info = &priv->rx_buffers[i];
1446
1447 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE);
1448 if (rx_info->skb == NULL)
1449 break;
1450 rx_info->mapping = pci_map_single(priv->pdev,
1451 skb_tail_pointer(rx_info->skb),
1452 RX_PKT_SIZE,
1453 PCI_DMA_FROMDEVICE);
1454 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1455 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1456 }
1457
1458 /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1459 for (i = 0; i < priv->tx_ring_size; i++) {
1460 desc = &priv->tx_ring[i];
1461 tx_info = &priv->tx_buffers[i];
1462
1463 tx_info->skb = NULL;
1464 tx_info->mapping = 0;
1465 desc->status = 0;
1466 }
1467 desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1468
1469 priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1470 ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1471 ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1472
1473 return 0;
1474}
1475
1476static void adm8211_free_rings(struct ieee80211_hw *dev)
1477{
1478 struct adm8211_priv *priv = dev->priv;
1479 unsigned int i;
1480
1481 for (i = 0; i < priv->rx_ring_size; i++) {
1482 if (!priv->rx_buffers[i].skb)
1483 continue;
1484
1485 pci_unmap_single(
1486 priv->pdev,
1487 priv->rx_buffers[i].mapping,
1488 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
1489
1490 dev_kfree_skb(priv->rx_buffers[i].skb);
1491 }
1492
1493 for (i = 0; i < priv->tx_ring_size; i++) {
1494 if (!priv->tx_buffers[i].skb)
1495 continue;
1496
1497 pci_unmap_single(priv->pdev,
1498 priv->tx_buffers[i].mapping,
1499 priv->tx_buffers[i].skb->len,
1500 PCI_DMA_TODEVICE);
1501
1502 dev_kfree_skb(priv->tx_buffers[i].skb);
1503 }
1504}
1505
1506static int adm8211_start(struct ieee80211_hw *dev)
1507{
1508 struct adm8211_priv *priv = dev->priv;
1509 int retval;
1510
1511 /* Power up MAC and RF chips */
1512 retval = adm8211_hw_reset(dev);
1513 if (retval) {
1514 wiphy_err(dev->wiphy, "hardware reset failed\n");
1515 goto fail;
1516 }
1517
1518 retval = adm8211_init_rings(dev);
1519 if (retval) {
1520 wiphy_err(dev->wiphy, "failed to initialize rings\n");
1521 goto fail;
1522 }
1523
1524 /* Init hardware */
1525 adm8211_hw_init(dev);
1526 adm8211_rf_set_channel(dev, priv->channel);
1527
1528 retval = request_irq(priv->pdev->irq, adm8211_interrupt,
1529 IRQF_SHARED, "adm8211", dev);
1530 if (retval) {
1531 wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
1532 goto fail;
1533 }
1534
1535 ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1536 ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1537 ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1538 priv->mode = NL80211_IFTYPE_MONITOR;
1539 adm8211_update_mode(dev);
1540 ADM8211_CSR_WRITE(RDR, 0);
1541
1542 adm8211_set_interval(dev, 100, 10);
1543 return 0;
1544
1545fail:
1546 return retval;
1547}
1548
1549static void adm8211_stop(struct ieee80211_hw *dev)
1550{
1551 struct adm8211_priv *priv = dev->priv;
1552
1553 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1554 priv->nar = 0;
1555 ADM8211_CSR_WRITE(NAR, 0);
1556 ADM8211_CSR_WRITE(IER, 0);
1557 ADM8211_CSR_READ(NAR);
1558
1559 free_irq(priv->pdev->irq, dev);
1560
1561 adm8211_free_rings(dev);
1562}
1563
1564static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
1565 int plcp_signal, int short_preamble)
1566{
1567 /* Alternative calculation from NetBSD: */
1568
1569/* IEEE 802.11b durations for DSSS PHY in microseconds */
1570#define IEEE80211_DUR_DS_LONG_PREAMBLE 144
1571#define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
1572#define IEEE80211_DUR_DS_FAST_PLCPHDR 24
1573#define IEEE80211_DUR_DS_SLOW_PLCPHDR 48
1574#define IEEE80211_DUR_DS_SLOW_ACK 112
1575#define IEEE80211_DUR_DS_FAST_ACK 56
1576#define IEEE80211_DUR_DS_SLOW_CTS 112
1577#define IEEE80211_DUR_DS_FAST_CTS 56
1578#define IEEE80211_DUR_DS_SLOT 20
1579#define IEEE80211_DUR_DS_SIFS 10
1580
1581 int remainder;
1582
1583 *dur = (80 * (24 + payload_len) + plcp_signal - 1)
1584 / plcp_signal;
1585
1586 if (plcp_signal <= PLCP_SIGNAL_2M)
1587 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
1588 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1589 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1590 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1591 IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
1592 else
1593 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
1594 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1595 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1596 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1597 IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
1598
1599 /* lengthen duration if long preamble */
1600 if (!short_preamble)
1601 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
1602 IEEE80211_DUR_DS_SHORT_PREAMBLE) +
1603 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
1604 IEEE80211_DUR_DS_FAST_PLCPHDR);
1605
1606
1607 *plcp = (80 * len) / plcp_signal;
1608 remainder = (80 * len) % plcp_signal;
1609 if (plcp_signal == PLCP_SIGNAL_11M &&
1610 remainder <= 30 && remainder > 0)
1611 *plcp = (*plcp | 0x8000) + 1;
1612 else if (remainder)
1613 (*plcp)++;
1614}
1615
1616/* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
1617static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1618 u16 plcp_signal,
1619 size_t hdrlen)
1620{
1621 struct adm8211_priv *priv = dev->priv;
1622 unsigned long flags;
1623 dma_addr_t mapping;
1624 unsigned int entry;
1625 u32 flag;
1626
1627 mapping = pci_map_single(priv->pdev, skb->data, skb->len,
1628 PCI_DMA_TODEVICE);
1629
1630 spin_lock_irqsave(&priv->lock, flags);
1631
1632 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1633 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1634 else
1635 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1636
1637 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1638 ieee80211_stop_queue(dev, 0);
1639
1640 entry = priv->cur_tx % priv->tx_ring_size;
1641
1642 priv->tx_buffers[entry].skb = skb;
1643 priv->tx_buffers[entry].mapping = mapping;
1644 priv->tx_buffers[entry].hdrlen = hdrlen;
1645 priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
1646
1647 if (entry == priv->tx_ring_size - 1)
1648 flag |= TDES1_CONTROL_TER;
1649 priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
1650
1651 /* Set TX rate (SIGNAL field in PLCP PPDU format) */
1652 flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
1653 priv->tx_ring[entry].status = cpu_to_le32(flag);
1654
1655 priv->cur_tx++;
1656
1657 spin_unlock_irqrestore(&priv->lock, flags);
1658
1659 /* Trigger transmit poll */
1660 ADM8211_CSR_WRITE(TDR, 0);
1661}
1662
1663/* Put adm8211_tx_hdr on skb and transmit */
1664static void adm8211_tx(struct ieee80211_hw *dev,
1665 struct ieee80211_tx_control *control,
1666 struct sk_buff *skb)
1667{
1668 struct adm8211_tx_hdr *txhdr;
1669 size_t payload_len, hdrlen;
1670 int plcp, dur, len, plcp_signal, short_preamble;
1671 struct ieee80211_hdr *hdr;
1672 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1673 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
1674 u8 rc_flags;
1675
1676 rc_flags = info->control.rates[0].flags;
1677 short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
1678 plcp_signal = txrate->bitrate;
1679
1680 hdr = (struct ieee80211_hdr *)skb->data;
1681 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1682 memcpy(skb->cb, skb->data, hdrlen);
1683 hdr = (struct ieee80211_hdr *)skb->cb;
1684 skb_pull(skb, hdrlen);
1685 payload_len = skb->len;
1686
1687 txhdr = (struct adm8211_tx_hdr *) skb_push(skb, sizeof(*txhdr));
1688 memset(txhdr, 0, sizeof(*txhdr));
1689 memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
1690 txhdr->signal = plcp_signal;
1691 txhdr->frame_body_size = cpu_to_le16(payload_len);
1692 txhdr->frame_control = hdr->frame_control;
1693
1694 len = hdrlen + payload_len + FCS_LEN;
1695
1696 txhdr->frag = cpu_to_le16(0x0FFF);
1697 adm8211_calc_durations(&dur, &plcp, payload_len,
1698 len, plcp_signal, short_preamble);
1699 txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1700 txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1701 txhdr->dur_frag_head = cpu_to_le16(dur);
1702 txhdr->dur_frag_tail = cpu_to_le16(dur);
1703
1704 txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1705
1706 if (short_preamble)
1707 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1708
1709 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1710 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1711
1712 txhdr->retry_limit = info->control.rates[0].count;
1713
1714 adm8211_tx_raw(dev, skb, plcp_signal, hdrlen);
1715}
1716
1717static int adm8211_alloc_rings(struct ieee80211_hw *dev)
1718{
1719 struct adm8211_priv *priv = dev->priv;
1720 unsigned int ring_size;
1721
1722 priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
1723 sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
1724 if (!priv->rx_buffers)
1725 return -ENOMEM;
1726
1727 priv->tx_buffers = (void *)priv->rx_buffers +
1728 sizeof(*priv->rx_buffers) * priv->rx_ring_size;
1729
1730 /* Allocate TX/RX descriptors */
1731 ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
1732 sizeof(struct adm8211_desc) * priv->tx_ring_size;
1733 priv->rx_ring = pci_alloc_consistent(priv->pdev, ring_size,
1734 &priv->rx_ring_dma);
1735
1736 if (!priv->rx_ring) {
1737 kfree(priv->rx_buffers);
1738 priv->rx_buffers = NULL;
1739 priv->tx_buffers = NULL;
1740 return -ENOMEM;
1741 }
1742
1743 priv->tx_ring = priv->rx_ring + priv->rx_ring_size;
1744 priv->tx_ring_dma = priv->rx_ring_dma +
1745 sizeof(struct adm8211_desc) * priv->rx_ring_size;
1746
1747 return 0;
1748}
1749
1750static const struct ieee80211_ops adm8211_ops = {
1751 .tx = adm8211_tx,
1752 .start = adm8211_start,
1753 .stop = adm8211_stop,
1754 .add_interface = adm8211_add_interface,
1755 .remove_interface = adm8211_remove_interface,
1756 .config = adm8211_config,
1757 .bss_info_changed = adm8211_bss_info_changed,
1758 .prepare_multicast = adm8211_prepare_multicast,
1759 .configure_filter = adm8211_configure_filter,
1760 .get_stats = adm8211_get_stats,
1761 .get_tsf = adm8211_get_tsft
1762};
1763
1764static int adm8211_probe(struct pci_dev *pdev,
1765 const struct pci_device_id *id)
1766{
1767 struct ieee80211_hw *dev;
1768 struct adm8211_priv *priv;
1769 unsigned long mem_addr, mem_len;
1770 unsigned int io_addr, io_len;
1771 int err;
1772 u32 reg;
1773 u8 perm_addr[ETH_ALEN];
1774
1775 err = pci_enable_device(pdev);
1776 if (err) {
1777 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1778 pci_name(pdev));
1779 return err;
1780 }
1781
1782 io_addr = pci_resource_start(pdev, 0);
1783 io_len = pci_resource_len(pdev, 0);
1784 mem_addr = pci_resource_start(pdev, 1);
1785 mem_len = pci_resource_len(pdev, 1);
1786 if (io_len < 256 || mem_len < 1024) {
1787 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1788 pci_name(pdev));
1789 goto err_disable_pdev;
1790 }
1791
1792
1793 /* check signature */
1794 pci_read_config_dword(pdev, 0x80 /* CR32 */, ®);
1795 if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1796 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1797 pci_name(pdev), reg);
1798 goto err_disable_pdev;
1799 }
1800
1801 err = pci_request_regions(pdev, "adm8211");
1802 if (err) {
1803 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1804 pci_name(pdev));
1805 return err; /* someone else grabbed it? don't disable it */
1806 }
1807
1808 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
1809 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1810 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1811 pci_name(pdev));
1812 goto err_free_reg;
1813 }
1814
1815 pci_set_master(pdev);
1816
1817 dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1818 if (!dev) {
1819 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1820 pci_name(pdev));
1821 err = -ENOMEM;
1822 goto err_free_reg;
1823 }
1824 priv = dev->priv;
1825 priv->pdev = pdev;
1826
1827 spin_lock_init(&priv->lock);
1828
1829 SET_IEEE80211_DEV(dev, &pdev->dev);
1830
1831 pci_set_drvdata(pdev, dev);
1832
1833 priv->map = pci_iomap(pdev, 1, mem_len);
1834 if (!priv->map)
1835 priv->map = pci_iomap(pdev, 0, io_len);
1836
1837 if (!priv->map) {
1838 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1839 pci_name(pdev));
1840 goto err_free_dev;
1841 }
1842
1843 priv->rx_ring_size = rx_ring_size;
1844 priv->tx_ring_size = tx_ring_size;
1845
1846 if (adm8211_alloc_rings(dev)) {
1847 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1848 pci_name(pdev));
1849 goto err_iounmap;
1850 }
1851
1852 *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0));
1853 *(__le16 *)&perm_addr[4] =
1854 cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF);
1855
1856 if (!is_valid_ether_addr(perm_addr)) {
1857 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1858 pci_name(pdev));
1859 eth_random_addr(perm_addr);
1860 }
1861 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1862
1863 dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1864 /* dev->flags = IEEE80211_HW_RX_INCLUDES_FCS in promisc mode */
1865 dev->flags = IEEE80211_HW_SIGNAL_UNSPEC;
1866 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1867
1868 dev->max_signal = 100; /* FIXME: find better value */
1869
1870 dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1871
1872 priv->retry_limit = 3;
1873 priv->ant_power = 0x40;
1874 priv->tx_power = 0x40;
1875 priv->lpf_cutoff = 0xFF;
1876 priv->lnags_threshold = 0xFF;
1877 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1878
1879 /* Power-on issue. EEPROM won't read correctly without */
1880 if (pdev->revision >= ADM8211_REV_BA) {
1881 ADM8211_CSR_WRITE(FRCTL, 0);
1882 ADM8211_CSR_READ(FRCTL);
1883 ADM8211_CSR_WRITE(FRCTL, 1);
1884 ADM8211_CSR_READ(FRCTL);
1885 msleep(100);
1886 }
1887
1888 err = adm8211_read_eeprom(dev);
1889 if (err) {
1890 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1891 pci_name(pdev));
1892 goto err_free_desc;
1893 }
1894
1895 priv->channel = 1;
1896
1897 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1898
1899 err = ieee80211_register_hw(dev);
1900 if (err) {
1901 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1902 pci_name(pdev));
1903 goto err_free_eeprom;
1904 }
1905
1906 wiphy_info(dev->wiphy, "hwaddr %pM, Rev 0x%02x\n",
1907 dev->wiphy->perm_addr, pdev->revision);
1908
1909 return 0;
1910
1911 err_free_eeprom:
1912 kfree(priv->eeprom);
1913
1914 err_free_desc:
1915 pci_free_consistent(pdev,
1916 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1917 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1918 priv->rx_ring, priv->rx_ring_dma);
1919 kfree(priv->rx_buffers);
1920
1921 err_iounmap:
1922 pci_iounmap(pdev, priv->map);
1923
1924 err_free_dev:
1925 ieee80211_free_hw(dev);
1926
1927 err_free_reg:
1928 pci_release_regions(pdev);
1929
1930 err_disable_pdev:
1931 pci_disable_device(pdev);
1932 return err;
1933}
1934
1935
1936static void adm8211_remove(struct pci_dev *pdev)
1937{
1938 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1939 struct adm8211_priv *priv;
1940
1941 if (!dev)
1942 return;
1943
1944 ieee80211_unregister_hw(dev);
1945
1946 priv = dev->priv;
1947
1948 pci_free_consistent(pdev,
1949 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1950 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1951 priv->rx_ring, priv->rx_ring_dma);
1952
1953 kfree(priv->rx_buffers);
1954 kfree(priv->eeprom);
1955 pci_iounmap(pdev, priv->map);
1956 pci_release_regions(pdev);
1957 pci_disable_device(pdev);
1958 ieee80211_free_hw(dev);
1959}
1960
1961
1962#ifdef CONFIG_PM
1963static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
1964{
1965 pci_save_state(pdev);
1966 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1967 return 0;
1968}
1969
1970static int adm8211_resume(struct pci_dev *pdev)
1971{
1972 pci_set_power_state(pdev, PCI_D0);
1973 pci_restore_state(pdev);
1974 return 0;
1975}
1976#endif /* CONFIG_PM */
1977
1978
1979MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
1980
1981/* TODO: implement enable_wake */
1982static struct pci_driver adm8211_driver = {
1983 .name = "adm8211",
1984 .id_table = adm8211_pci_id_table,
1985 .probe = adm8211_probe,
1986 .remove = adm8211_remove,
1987#ifdef CONFIG_PM
1988 .suspend = adm8211_suspend,
1989 .resume = adm8211_resume,
1990#endif /* CONFIG_PM */
1991};
1992
1993module_pci_driver(adm8211_driver);