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Merge branch 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
[deliverable/linux.git] / drivers / net / wireless / adm8211.c
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 void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
52 {
53 struct adm8211_priv *priv = eeprom->data;
54 u32 reg = ADM8211_CSR_READ(SPR);
55
56 eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
57 eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
58 eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
59 eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
60 }
61
62 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
63 {
64 struct adm8211_priv *priv = eeprom->data;
65 u32 reg = 0x4000 | ADM8211_SPR_SRS;
66
67 if (eeprom->reg_data_in)
68 reg |= ADM8211_SPR_SDI;
69 if (eeprom->reg_data_out)
70 reg |= ADM8211_SPR_SDO;
71 if (eeprom->reg_data_clock)
72 reg |= ADM8211_SPR_SCLK;
73 if (eeprom->reg_chip_select)
74 reg |= ADM8211_SPR_SCS;
75
76 ADM8211_CSR_WRITE(SPR, reg);
77 ADM8211_CSR_READ(SPR); /* eeprom_delay */
78 }
79
80 static int adm8211_read_eeprom(struct ieee80211_hw *dev)
81 {
82 struct adm8211_priv *priv = dev->priv;
83 unsigned int words, i;
84 struct ieee80211_chan_range chan_range;
85 u16 cr49;
86 struct eeprom_93cx6 eeprom = {
87 .data = priv,
88 .register_read = adm8211_eeprom_register_read,
89 .register_write = adm8211_eeprom_register_write
90 };
91
92 if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
93 /* 256 * 16-bit = 512 bytes */
94 eeprom.width = PCI_EEPROM_WIDTH_93C66;
95 words = 256;
96 } else {
97 /* 64 * 16-bit = 128 bytes */
98 eeprom.width = PCI_EEPROM_WIDTH_93C46;
99 words = 64;
100 }
101
102 priv->eeprom_len = words * 2;
103 priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
104 if (!priv->eeprom)
105 return -ENOMEM;
106
107 eeprom_93cx6_multiread(&eeprom, 0, (__le16 __force *)priv->eeprom, words);
108
109 cr49 = le16_to_cpu(priv->eeprom->cr49);
110 priv->rf_type = (cr49 >> 3) & 0x7;
111 switch (priv->rf_type) {
112 case ADM8211_TYPE_INTERSIL:
113 case ADM8211_TYPE_RFMD:
114 case ADM8211_TYPE_MARVEL:
115 case ADM8211_TYPE_AIROHA:
116 case ADM8211_TYPE_ADMTEK:
117 break;
118
119 default:
120 if (priv->pdev->revision < ADM8211_REV_CA)
121 priv->rf_type = ADM8211_TYPE_RFMD;
122 else
123 priv->rf_type = ADM8211_TYPE_AIROHA;
124
125 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
126 pci_name(priv->pdev), (cr49 >> 3) & 0x7);
127 }
128
129 priv->bbp_type = cr49 & 0x7;
130 switch (priv->bbp_type) {
131 case ADM8211_TYPE_INTERSIL:
132 case ADM8211_TYPE_RFMD:
133 case ADM8211_TYPE_MARVEL:
134 case ADM8211_TYPE_AIROHA:
135 case ADM8211_TYPE_ADMTEK:
136 break;
137 default:
138 if (priv->pdev->revision < ADM8211_REV_CA)
139 priv->bbp_type = ADM8211_TYPE_RFMD;
140 else
141 priv->bbp_type = ADM8211_TYPE_ADMTEK;
142
143 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
144 pci_name(priv->pdev), cr49 >> 3);
145 }
146
147 if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
148 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
149 pci_name(priv->pdev), priv->eeprom->country_code);
150
151 chan_range = cranges[2];
152 } else
153 chan_range = cranges[priv->eeprom->country_code];
154
155 printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
156 pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
157
158 priv->modes[0].num_channels = chan_range.max - chan_range.min + 1;
159 priv->modes[0].channels = priv->channels;
160
161 memcpy(priv->channels, adm8211_channels, sizeof(adm8211_channels));
162
163 for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
164 if (i >= chan_range.min && i <= chan_range.max)
165 priv->channels[i - 1].flag =
166 IEEE80211_CHAN_W_SCAN |
167 IEEE80211_CHAN_W_ACTIVE_SCAN |
168 IEEE80211_CHAN_W_IBSS;
169
170 switch (priv->eeprom->specific_bbptype) {
171 case ADM8211_BBP_RFMD3000:
172 case ADM8211_BBP_RFMD3002:
173 case ADM8211_BBP_ADM8011:
174 priv->specific_bbptype = priv->eeprom->specific_bbptype;
175 break;
176
177 default:
178 if (priv->pdev->revision < ADM8211_REV_CA)
179 priv->specific_bbptype = ADM8211_BBP_RFMD3000;
180 else
181 priv->specific_bbptype = ADM8211_BBP_ADM8011;
182
183 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
184 pci_name(priv->pdev), priv->eeprom->specific_bbptype);
185 }
186
187 switch (priv->eeprom->specific_rftype) {
188 case ADM8211_RFMD2948:
189 case ADM8211_RFMD2958:
190 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
191 case ADM8211_MAX2820:
192 case ADM8211_AL2210L:
193 priv->transceiver_type = priv->eeprom->specific_rftype;
194 break;
195
196 default:
197 if (priv->pdev->revision == ADM8211_REV_BA)
198 priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
199 else if (priv->pdev->revision == ADM8211_REV_CA)
200 priv->transceiver_type = ADM8211_AL2210L;
201 else if (priv->pdev->revision == ADM8211_REV_AB)
202 priv->transceiver_type = ADM8211_RFMD2948;
203
204 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
205 pci_name(priv->pdev), priv->eeprom->specific_rftype);
206
207 break;
208 }
209
210 printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
211 "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
212 priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
213
214 return 0;
215 }
216
217 static inline void adm8211_write_sram(struct ieee80211_hw *dev,
218 u32 addr, u32 data)
219 {
220 struct adm8211_priv *priv = dev->priv;
221
222 ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
223 (priv->pdev->revision < ADM8211_REV_BA ?
224 0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
225 ADM8211_CSR_READ(WEPCTL);
226 msleep(1);
227
228 ADM8211_CSR_WRITE(WESK, data);
229 ADM8211_CSR_READ(WESK);
230 msleep(1);
231 }
232
233 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
234 unsigned int addr, u8 *buf,
235 unsigned int len)
236 {
237 struct adm8211_priv *priv = dev->priv;
238 u32 reg = ADM8211_CSR_READ(WEPCTL);
239 unsigned int i;
240
241 if (priv->pdev->revision < ADM8211_REV_BA) {
242 for (i = 0; i < len; i += 2) {
243 u16 val = buf[i] | (buf[i + 1] << 8);
244 adm8211_write_sram(dev, addr + i / 2, val);
245 }
246 } else {
247 for (i = 0; i < len; i += 4) {
248 u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
249 (buf[i + 2] << 16) | (buf[i + 3] << 24);
250 adm8211_write_sram(dev, addr + i / 4, val);
251 }
252 }
253
254 ADM8211_CSR_WRITE(WEPCTL, reg);
255 }
256
257 static void adm8211_clear_sram(struct ieee80211_hw *dev)
258 {
259 struct adm8211_priv *priv = dev->priv;
260 u32 reg = ADM8211_CSR_READ(WEPCTL);
261 unsigned int addr;
262
263 for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
264 adm8211_write_sram(dev, addr, 0);
265
266 ADM8211_CSR_WRITE(WEPCTL, reg);
267 }
268
269 static int adm8211_get_stats(struct ieee80211_hw *dev,
270 struct ieee80211_low_level_stats *stats)
271 {
272 struct adm8211_priv *priv = dev->priv;
273
274 memcpy(stats, &priv->stats, sizeof(*stats));
275
276 return 0;
277 }
278
279 static int adm8211_get_tx_stats(struct ieee80211_hw *dev,
280 struct ieee80211_tx_queue_stats *stats)
281 {
282 struct adm8211_priv *priv = dev->priv;
283 struct ieee80211_tx_queue_stats_data *data = &stats->data[0];
284
285 data->len = priv->cur_tx - priv->dirty_tx;
286 data->limit = priv->tx_ring_size - 2;
287 data->count = priv->dirty_tx;
288
289 return 0;
290 }
291
292 static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
293 {
294 struct adm8211_priv *priv = dev->priv;
295 unsigned int dirty_tx;
296
297 spin_lock(&priv->lock);
298
299 for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
300 unsigned int entry = dirty_tx % priv->tx_ring_size;
301 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
302 struct ieee80211_tx_status tx_status;
303 struct adm8211_tx_ring_info *info;
304 struct sk_buff *skb;
305
306 if (status & TDES0_CONTROL_OWN ||
307 !(status & TDES0_CONTROL_DONE))
308 break;
309
310 info = &priv->tx_buffers[entry];
311 skb = info->skb;
312
313 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
314
315 pci_unmap_single(priv->pdev, info->mapping,
316 info->skb->len, PCI_DMA_TODEVICE);
317
318 memset(&tx_status, 0, sizeof(tx_status));
319 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
320 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
321 memcpy(&tx_status.control, &info->tx_control,
322 sizeof(tx_status.control));
323 if (!(tx_status.control.flags & IEEE80211_TXCTL_NO_ACK)) {
324 if (status & TDES0_STATUS_ES)
325 tx_status.excessive_retries = 1;
326 else
327 tx_status.flags |= IEEE80211_TX_STATUS_ACK;
328 }
329 ieee80211_tx_status_irqsafe(dev, skb, &tx_status);
330
331 info->skb = NULL;
332 }
333
334 if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
335 ieee80211_wake_queue(dev, 0);
336
337 priv->dirty_tx = dirty_tx;
338 spin_unlock(&priv->lock);
339 }
340
341
342 static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
343 {
344 struct adm8211_priv *priv = dev->priv;
345 unsigned int entry = priv->cur_rx % priv->rx_ring_size;
346 u32 status;
347 unsigned int pktlen;
348 struct sk_buff *skb, *newskb;
349 unsigned int limit = priv->rx_ring_size;
350 static const u8 rate_tbl[] = {10, 20, 55, 110, 220};
351 u8 rssi, rate;
352
353 while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
354 if (!limit--)
355 break;
356
357 status = le32_to_cpu(priv->rx_ring[entry].status);
358 rate = (status & RDES0_STATUS_RXDR) >> 12;
359 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
360 RDES1_STATUS_RSSI;
361
362 pktlen = status & RDES0_STATUS_FL;
363 if (pktlen > RX_PKT_SIZE) {
364 if (net_ratelimit())
365 printk(KERN_DEBUG "%s: frame too long (%d)\n",
366 wiphy_name(dev->wiphy), pktlen);
367 pktlen = RX_PKT_SIZE;
368 }
369
370 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
371 skb = NULL; /* old buffer will be reused */
372 /* TODO: update RX error stats */
373 /* TODO: check RDES0_STATUS_CRC*E */
374 } else if (pktlen < RX_COPY_BREAK) {
375 skb = dev_alloc_skb(pktlen);
376 if (skb) {
377 pci_dma_sync_single_for_cpu(
378 priv->pdev,
379 priv->rx_buffers[entry].mapping,
380 pktlen, PCI_DMA_FROMDEVICE);
381 memcpy(skb_put(skb, pktlen),
382 skb_tail_pointer(priv->rx_buffers[entry].skb),
383 pktlen);
384 pci_dma_sync_single_for_device(
385 priv->pdev,
386 priv->rx_buffers[entry].mapping,
387 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
388 }
389 } else {
390 newskb = dev_alloc_skb(RX_PKT_SIZE);
391 if (newskb) {
392 skb = priv->rx_buffers[entry].skb;
393 skb_put(skb, pktlen);
394 pci_unmap_single(
395 priv->pdev,
396 priv->rx_buffers[entry].mapping,
397 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
398 priv->rx_buffers[entry].skb = newskb;
399 priv->rx_buffers[entry].mapping =
400 pci_map_single(priv->pdev,
401 skb_tail_pointer(newskb),
402 RX_PKT_SIZE,
403 PCI_DMA_FROMDEVICE);
404 } else {
405 skb = NULL;
406 /* TODO: update rx dropped stats */
407 }
408
409 priv->rx_ring[entry].buffer1 =
410 cpu_to_le32(priv->rx_buffers[entry].mapping);
411 }
412
413 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
414 RDES0_STATUS_SQL);
415 priv->rx_ring[entry].length =
416 cpu_to_le32(RX_PKT_SIZE |
417 (entry == priv->rx_ring_size - 1 ?
418 RDES1_CONTROL_RER : 0));
419
420 if (skb) {
421 struct ieee80211_rx_status rx_status = {0};
422
423 if (priv->pdev->revision < ADM8211_REV_CA)
424 rx_status.ssi = rssi;
425 else
426 rx_status.ssi = 100 - rssi;
427
428 if (rate <= 4)
429 rx_status.rate = rate_tbl[rate];
430
431 rx_status.channel = priv->channel;
432 rx_status.freq = adm8211_channels[priv->channel - 1].freq;
433 rx_status.phymode = MODE_IEEE80211B;
434
435 ieee80211_rx_irqsafe(dev, skb, &rx_status);
436 }
437
438 entry = (++priv->cur_rx) % priv->rx_ring_size;
439 }
440
441 /* TODO: check LPC and update stats? */
442 }
443
444
445 static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
446 {
447 #define ADM8211_INT(x) \
448 do { \
449 if (unlikely(stsr & ADM8211_STSR_ ## x)) \
450 printk(KERN_DEBUG "%s: " #x "\n", wiphy_name(dev->wiphy)); \
451 } while (0)
452
453 struct ieee80211_hw *dev = dev_id;
454 struct adm8211_priv *priv = dev->priv;
455 u32 stsr = ADM8211_CSR_READ(STSR);
456 ADM8211_CSR_WRITE(STSR, stsr);
457 if (stsr == 0xffffffff)
458 return IRQ_HANDLED;
459
460 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
461 return IRQ_HANDLED;
462
463 if (stsr & ADM8211_STSR_RCI)
464 adm8211_interrupt_rci(dev);
465 if (stsr & ADM8211_STSR_TCI)
466 adm8211_interrupt_tci(dev);
467
468 /*ADM8211_INT(LinkOn);*/
469 /*ADM8211_INT(LinkOff);*/
470
471 ADM8211_INT(PCF);
472 ADM8211_INT(BCNTC);
473 ADM8211_INT(GPINT);
474 ADM8211_INT(ATIMTC);
475 ADM8211_INT(TSFTF);
476 ADM8211_INT(TSCZ);
477 ADM8211_INT(SQL);
478 ADM8211_INT(WEPTD);
479 ADM8211_INT(ATIME);
480 /*ADM8211_INT(TBTT);*/
481 ADM8211_INT(TEIS);
482 ADM8211_INT(FBE);
483 ADM8211_INT(REIS);
484 ADM8211_INT(GPTT);
485 ADM8211_INT(RPS);
486 ADM8211_INT(RDU);
487 ADM8211_INT(TUF);
488 /*ADM8211_INT(TRT);*/
489 /*ADM8211_INT(TLT);*/
490 /*ADM8211_INT(TDU);*/
491 ADM8211_INT(TPS);
492
493 return IRQ_HANDLED;
494
495 #undef ADM8211_INT
496 }
497
498 #define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
499 static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \
500 u16 addr, u32 value) { \
501 struct adm8211_priv *priv = dev->priv; \
502 unsigned int i; \
503 u32 reg, bitbuf; \
504 \
505 value &= v_mask; \
506 addr &= a_mask; \
507 bitbuf = (value << v_shift) | (addr << a_shift); \
508 \
509 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \
510 ADM8211_CSR_READ(SYNRF); \
511 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \
512 ADM8211_CSR_READ(SYNRF); \
513 \
514 if (prewrite) { \
515 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \
516 ADM8211_CSR_READ(SYNRF); \
517 } \
518 \
519 for (i = 0; i <= bits; i++) { \
520 if (bitbuf & (1 << (bits - i))) \
521 reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \
522 else \
523 reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \
524 \
525 ADM8211_CSR_WRITE(SYNRF, reg); \
526 ADM8211_CSR_READ(SYNRF); \
527 \
528 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
529 ADM8211_CSR_READ(SYNRF); \
530 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
531 ADM8211_CSR_READ(SYNRF); \
532 } \
533 \
534 if (postwrite == 1) { \
535 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \
536 ADM8211_CSR_READ(SYNRF); \
537 } \
538 if (postwrite == 2) { \
539 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \
540 ADM8211_CSR_READ(SYNRF); \
541 } \
542 \
543 ADM8211_CSR_WRITE(SYNRF, 0); \
544 ADM8211_CSR_READ(SYNRF); \
545 }
546
547 WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1)
548 WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1)
549 WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
550 WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2)
551
552 #undef WRITE_SYN
553
554 static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
555 {
556 struct adm8211_priv *priv = dev->priv;
557 unsigned int timeout;
558 u32 reg;
559
560 timeout = 10;
561 while (timeout > 0) {
562 reg = ADM8211_CSR_READ(BBPCTL);
563 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
564 break;
565 timeout--;
566 msleep(2);
567 }
568
569 if (timeout == 0) {
570 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
571 " prewrite (reg=0x%08x)\n",
572 wiphy_name(dev->wiphy), addr, data, reg);
573 return -ETIMEDOUT;
574 }
575
576 switch (priv->bbp_type) {
577 case ADM8211_TYPE_INTERSIL:
578 reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */
579 break;
580 case ADM8211_TYPE_RFMD:
581 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
582 (0x01 << 18);
583 break;
584 case ADM8211_TYPE_ADMTEK:
585 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
586 (0x05 << 18);
587 break;
588 }
589 reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
590
591 ADM8211_CSR_WRITE(BBPCTL, reg);
592
593 timeout = 10;
594 while (timeout > 0) {
595 reg = ADM8211_CSR_READ(BBPCTL);
596 if (!(reg & ADM8211_BBPCTL_WR))
597 break;
598 timeout--;
599 msleep(2);
600 }
601
602 if (timeout == 0) {
603 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
604 ~ADM8211_BBPCTL_WR);
605 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
606 " postwrite (reg=0x%08x)\n",
607 wiphy_name(dev->wiphy), addr, data, reg);
608 return -ETIMEDOUT;
609 }
610
611 return 0;
612 }
613
614 static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
615 {
616 static const u32 adm8211_rfmd2958_reg5[] =
617 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
618 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
619 static const u32 adm8211_rfmd2958_reg6[] =
620 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
621 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
622
623 struct adm8211_priv *priv = dev->priv;
624 u8 ant_power = priv->ant_power > 0x3F ?
625 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
626 u8 tx_power = priv->tx_power > 0x3F ?
627 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
628 u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
629 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
630 u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
631 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
632 u32 reg;
633
634 ADM8211_IDLE();
635
636 /* Program synthesizer to new channel */
637 switch (priv->transceiver_type) {
638 case ADM8211_RFMD2958:
639 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
640 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
641 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
642
643 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
644 adm8211_rfmd2958_reg5[chan - 1]);
645 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
646 adm8211_rfmd2958_reg6[chan - 1]);
647 break;
648
649 case ADM8211_RFMD2948:
650 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
651 SI4126_MAIN_XINDIV2);
652 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
653 SI4126_POWERDOWN_PDIB |
654 SI4126_POWERDOWN_PDRB);
655 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
656 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
657 (chan == 14 ?
658 2110 : (2033 + (chan * 5))));
659 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
660 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
661 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
662 break;
663
664 case ADM8211_MAX2820:
665 adm8211_rf_write_syn_max2820(dev, 0x3,
666 (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
667 break;
668
669 case ADM8211_AL2210L:
670 adm8211_rf_write_syn_al2210l(dev, 0x0,
671 (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
672 break;
673
674 default:
675 printk(KERN_DEBUG "%s: unsupported transceiver type %d\n",
676 wiphy_name(dev->wiphy), priv->transceiver_type);
677 break;
678 }
679
680 /* write BBP regs */
681 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
682
683 /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
684 /* TODO: remove if SMC 2635W doesn't need this */
685 if (priv->transceiver_type == ADM8211_RFMD2948) {
686 reg = ADM8211_CSR_READ(GPIO);
687 reg &= 0xfffc0000;
688 reg |= ADM8211_CSR_GPIO_EN0;
689 if (chan != 14)
690 reg |= ADM8211_CSR_GPIO_O0;
691 ADM8211_CSR_WRITE(GPIO, reg);
692 }
693
694 if (priv->transceiver_type == ADM8211_RFMD2958) {
695 /* set PCNT2 */
696 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
697 /* set PCNT1 P_DESIRED/MID_BIAS */
698 reg = le16_to_cpu(priv->eeprom->cr49);
699 reg >>= 13;
700 reg <<= 15;
701 reg |= ant_power << 9;
702 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
703 /* set TXRX TX_GAIN */
704 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
705 (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0));
706 } else {
707 reg = ADM8211_CSR_READ(PLCPHD);
708 reg &= 0xff00ffff;
709 reg |= tx_power << 18;
710 ADM8211_CSR_WRITE(PLCPHD, reg);
711 }
712
713 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
714 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
715 ADM8211_CSR_READ(SYNRF);
716 msleep(30);
717
718 /* RF3000 BBP */
719 if (priv->transceiver_type != ADM8211_RFMD2958)
720 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
721 tx_power<<2);
722 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
723 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
724 adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ?
725 priv->eeprom->cr28 : 0);
726 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
727
728 ADM8211_CSR_WRITE(SYNRF, 0);
729
730 /* Nothing to do for ADMtek BBP */
731 } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
732 printk(KERN_DEBUG "%s: unsupported BBP type %d\n",
733 wiphy_name(dev->wiphy), priv->bbp_type);
734
735 ADM8211_RESTORE();
736
737 /* update current channel for adhoc (and maybe AP mode) */
738 reg = ADM8211_CSR_READ(CAP0);
739 reg &= ~0xF;
740 reg |= chan;
741 ADM8211_CSR_WRITE(CAP0, reg);
742
743 return 0;
744 }
745
746 static void adm8211_update_mode(struct ieee80211_hw *dev)
747 {
748 struct adm8211_priv *priv = dev->priv;
749
750 ADM8211_IDLE();
751
752 priv->soft_rx_crc = 0;
753 switch (priv->mode) {
754 case IEEE80211_IF_TYPE_STA:
755 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
756 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
757 break;
758 case IEEE80211_IF_TYPE_IBSS:
759 priv->nar &= ~ADM8211_NAR_PR;
760 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
761
762 /* don't trust the error bits on rev 0x20 and up in adhoc */
763 if (priv->pdev->revision >= ADM8211_REV_BA)
764 priv->soft_rx_crc = 1;
765 break;
766 case IEEE80211_IF_TYPE_MNTR:
767 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
768 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
769 break;
770 }
771
772 ADM8211_RESTORE();
773 }
774
775 static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
776 {
777 struct adm8211_priv *priv = dev->priv;
778
779 switch (priv->transceiver_type) {
780 case ADM8211_RFMD2958:
781 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
782 /* comments taken from ADMtek vendor driver */
783
784 /* Reset RF2958 after power on */
785 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
786 /* Initialize RF VCO Core Bias to maximum */
787 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
788 /* Initialize IF PLL */
789 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
790 /* Initialize IF PLL Coarse Tuning */
791 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
792 /* Initialize RF PLL */
793 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
794 /* Initialize RF PLL Coarse Tuning */
795 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
796 /* Initialize TX gain and filter BW (R9) */
797 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
798 (priv->transceiver_type == ADM8211_RFMD2958 ?
799 0x10050 : 0x00050));
800 /* Initialize CAL register */
801 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
802 break;
803
804 case ADM8211_MAX2820:
805 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
806 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
807 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
808 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
809 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
810 break;
811
812 case ADM8211_AL2210L:
813 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
814 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
815 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
816 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
817 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
818 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
819 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
820 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
821 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
822 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
823 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
824 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
825 break;
826
827 case ADM8211_RFMD2948:
828 default:
829 break;
830 }
831 }
832
833 static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
834 {
835 struct adm8211_priv *priv = dev->priv;
836 u32 reg;
837
838 /* write addresses */
839 if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
840 ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A);
841 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
842 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
843 } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
844 priv->bbp_type == ADM8211_TYPE_ADMTEK) {
845 /* check specific BBP type */
846 switch (priv->specific_bbptype) {
847 case ADM8211_BBP_RFMD3000:
848 case ADM8211_BBP_RFMD3002:
849 ADM8211_CSR_WRITE(MMIWA, 0x00009101);
850 ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
851 break;
852
853 case ADM8211_BBP_ADM8011:
854 ADM8211_CSR_WRITE(MMIWA, 0x00008903);
855 ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
856
857 reg = ADM8211_CSR_READ(BBPCTL);
858 reg &= ~ADM8211_BBPCTL_TYPE;
859 reg |= 0x5 << 18;
860 ADM8211_CSR_WRITE(BBPCTL, reg);
861 break;
862 }
863
864 switch (priv->pdev->revision) {
865 case ADM8211_REV_CA:
866 if (priv->transceiver_type == ADM8211_RFMD2958 ||
867 priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
868 priv->transceiver_type == ADM8211_RFMD2948)
869 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
870 else if (priv->transceiver_type == ADM8211_MAX2820 ||
871 priv->transceiver_type == ADM8211_AL2210L)
872 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
873 break;
874
875 case ADM8211_REV_BA:
876 reg = ADM8211_CSR_READ(MMIRD1);
877 reg &= 0x0000FFFF;
878 reg |= 0x7e100000;
879 ADM8211_CSR_WRITE(MMIRD1, reg);
880 break;
881
882 case ADM8211_REV_AB:
883 case ADM8211_REV_AF:
884 default:
885 ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
886 break;
887 }
888
889 /* For RFMD */
890 ADM8211_CSR_WRITE(MACTEST, 0x800);
891 }
892
893 adm8211_hw_init_syn(dev);
894
895 /* Set RF Power control IF pin to PE1+PHYRST# */
896 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
897 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
898 ADM8211_CSR_READ(SYNRF);
899 msleep(20);
900
901 /* write BBP regs */
902 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
903 /* RF3000 BBP */
904 /* another set:
905 * 11: c8
906 * 14: 14
907 * 15: 50 (chan 1..13; chan 14: d0)
908 * 1c: 00
909 * 1d: 84
910 */
911 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
912 /* antenna selection: diversity */
913 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
914 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
915 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
916 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
917
918 if (priv->eeprom->major_version < 2) {
919 adm8211_write_bbp(dev, 0x1c, 0x00);
920 adm8211_write_bbp(dev, 0x1d, 0x80);
921 } else {
922 if (priv->pdev->revision == ADM8211_REV_BA)
923 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
924 else
925 adm8211_write_bbp(dev, 0x1c, 0x00);
926
927 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
928 }
929 } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
930 /* reset baseband */
931 adm8211_write_bbp(dev, 0x00, 0xFF);
932 /* antenna selection: diversity */
933 adm8211_write_bbp(dev, 0x07, 0x0A);
934
935 /* TODO: find documentation for this */
936 switch (priv->transceiver_type) {
937 case ADM8211_RFMD2958:
938 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
939 adm8211_write_bbp(dev, 0x00, 0x00);
940 adm8211_write_bbp(dev, 0x01, 0x00);
941 adm8211_write_bbp(dev, 0x02, 0x00);
942 adm8211_write_bbp(dev, 0x03, 0x00);
943 adm8211_write_bbp(dev, 0x06, 0x0f);
944 adm8211_write_bbp(dev, 0x09, 0x00);
945 adm8211_write_bbp(dev, 0x0a, 0x00);
946 adm8211_write_bbp(dev, 0x0b, 0x00);
947 adm8211_write_bbp(dev, 0x0c, 0x00);
948 adm8211_write_bbp(dev, 0x0f, 0xAA);
949 adm8211_write_bbp(dev, 0x10, 0x8c);
950 adm8211_write_bbp(dev, 0x11, 0x43);
951 adm8211_write_bbp(dev, 0x18, 0x40);
952 adm8211_write_bbp(dev, 0x20, 0x23);
953 adm8211_write_bbp(dev, 0x21, 0x02);
954 adm8211_write_bbp(dev, 0x22, 0x28);
955 adm8211_write_bbp(dev, 0x23, 0x30);
956 adm8211_write_bbp(dev, 0x24, 0x2d);
957 adm8211_write_bbp(dev, 0x28, 0x35);
958 adm8211_write_bbp(dev, 0x2a, 0x8c);
959 adm8211_write_bbp(dev, 0x2b, 0x81);
960 adm8211_write_bbp(dev, 0x2c, 0x44);
961 adm8211_write_bbp(dev, 0x2d, 0x0A);
962 adm8211_write_bbp(dev, 0x29, 0x40);
963 adm8211_write_bbp(dev, 0x60, 0x08);
964 adm8211_write_bbp(dev, 0x64, 0x01);
965 break;
966
967 case ADM8211_MAX2820:
968 adm8211_write_bbp(dev, 0x00, 0x00);
969 adm8211_write_bbp(dev, 0x01, 0x00);
970 adm8211_write_bbp(dev, 0x02, 0x00);
971 adm8211_write_bbp(dev, 0x03, 0x00);
972 adm8211_write_bbp(dev, 0x06, 0x0f);
973 adm8211_write_bbp(dev, 0x09, 0x05);
974 adm8211_write_bbp(dev, 0x0a, 0x02);
975 adm8211_write_bbp(dev, 0x0b, 0x00);
976 adm8211_write_bbp(dev, 0x0c, 0x0f);
977 adm8211_write_bbp(dev, 0x0f, 0x55);
978 adm8211_write_bbp(dev, 0x10, 0x8d);
979 adm8211_write_bbp(dev, 0x11, 0x43);
980 adm8211_write_bbp(dev, 0x18, 0x4a);
981 adm8211_write_bbp(dev, 0x20, 0x20);
982 adm8211_write_bbp(dev, 0x21, 0x02);
983 adm8211_write_bbp(dev, 0x22, 0x23);
984 adm8211_write_bbp(dev, 0x23, 0x30);
985 adm8211_write_bbp(dev, 0x24, 0x2d);
986 adm8211_write_bbp(dev, 0x2a, 0x8c);
987 adm8211_write_bbp(dev, 0x2b, 0x81);
988 adm8211_write_bbp(dev, 0x2c, 0x44);
989 adm8211_write_bbp(dev, 0x29, 0x4a);
990 adm8211_write_bbp(dev, 0x60, 0x2b);
991 adm8211_write_bbp(dev, 0x64, 0x01);
992 break;
993
994 case ADM8211_AL2210L:
995 adm8211_write_bbp(dev, 0x00, 0x00);
996 adm8211_write_bbp(dev, 0x01, 0x00);
997 adm8211_write_bbp(dev, 0x02, 0x00);
998 adm8211_write_bbp(dev, 0x03, 0x00);
999 adm8211_write_bbp(dev, 0x06, 0x0f);
1000 adm8211_write_bbp(dev, 0x07, 0x05);
1001 adm8211_write_bbp(dev, 0x08, 0x03);
1002 adm8211_write_bbp(dev, 0x09, 0x00);
1003 adm8211_write_bbp(dev, 0x0a, 0x00);
1004 adm8211_write_bbp(dev, 0x0b, 0x00);
1005 adm8211_write_bbp(dev, 0x0c, 0x10);
1006 adm8211_write_bbp(dev, 0x0f, 0x55);
1007 adm8211_write_bbp(dev, 0x10, 0x8d);
1008 adm8211_write_bbp(dev, 0x11, 0x43);
1009 adm8211_write_bbp(dev, 0x18, 0x4a);
1010 adm8211_write_bbp(dev, 0x20, 0x20);
1011 adm8211_write_bbp(dev, 0x21, 0x02);
1012 adm8211_write_bbp(dev, 0x22, 0x23);
1013 adm8211_write_bbp(dev, 0x23, 0x30);
1014 adm8211_write_bbp(dev, 0x24, 0x2d);
1015 adm8211_write_bbp(dev, 0x2a, 0xaa);
1016 adm8211_write_bbp(dev, 0x2b, 0x81);
1017 adm8211_write_bbp(dev, 0x2c, 0x44);
1018 adm8211_write_bbp(dev, 0x29, 0xfa);
1019 adm8211_write_bbp(dev, 0x60, 0x2d);
1020 adm8211_write_bbp(dev, 0x64, 0x01);
1021 break;
1022
1023 case ADM8211_RFMD2948:
1024 break;
1025
1026 default:
1027 printk(KERN_DEBUG "%s: unsupported transceiver %d\n",
1028 wiphy_name(dev->wiphy), priv->transceiver_type);
1029 break;
1030 }
1031 } else
1032 printk(KERN_DEBUG "%s: unsupported BBP %d\n",
1033 wiphy_name(dev->wiphy), priv->bbp_type);
1034
1035 ADM8211_CSR_WRITE(SYNRF, 0);
1036
1037 /* Set RF CAL control source to MAC control */
1038 reg = ADM8211_CSR_READ(SYNCTL);
1039 reg |= ADM8211_SYNCTL_SELCAL;
1040 ADM8211_CSR_WRITE(SYNCTL, reg);
1041
1042 return 0;
1043 }
1044
1045 /* configures hw beacons/probe responses */
1046 static int adm8211_set_rate(struct ieee80211_hw *dev)
1047 {
1048 struct adm8211_priv *priv = dev->priv;
1049 u32 reg;
1050 int i = 0;
1051 u8 rate_buf[12] = {0};
1052
1053 /* write supported rates */
1054 if (priv->pdev->revision != ADM8211_REV_BA) {
1055 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1056 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1057 rate_buf[i + 1] = (adm8211_rates[i].rate / 5) | 0x80;
1058 } else {
1059 /* workaround for rev BA specific bug */
1060 rate_buf[0] = 0x04;
1061 rate_buf[1] = 0x82;
1062 rate_buf[2] = 0x04;
1063 rate_buf[3] = 0x0b;
1064 rate_buf[4] = 0x16;
1065 }
1066
1067 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1068 ARRAY_SIZE(adm8211_rates) + 1);
1069
1070 reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1071 reg |= 1 << 15; /* short preamble */
1072 reg |= 110 << 24;
1073 ADM8211_CSR_WRITE(PLCPHD, reg);
1074
1075 /* MTMLT = 512 TU (max TX MSDU lifetime)
1076 * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1077 * SRTYLIM = 224 (short retry limit, TX header value is default) */
1078 ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1079
1080 return 0;
1081 }
1082
1083 static void adm8211_hw_init(struct ieee80211_hw *dev)
1084 {
1085 struct adm8211_priv *priv = dev->priv;
1086 u32 reg;
1087 u8 cline;
1088
1089 reg = le32_to_cpu(ADM8211_CSR_READ(PAR));
1090 reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1091 reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1092
1093 if (!pci_set_mwi(priv->pdev)) {
1094 reg |= 0x1 << 24;
1095 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1096
1097 switch (cline) {
1098 case 0x8: reg |= (0x1 << 14);
1099 break;
1100 case 0x16: reg |= (0x2 << 14);
1101 break;
1102 case 0x32: reg |= (0x3 << 14);
1103 break;
1104 default: reg |= (0x0 << 14);
1105 break;
1106 }
1107 }
1108
1109 ADM8211_CSR_WRITE(PAR, reg);
1110
1111 reg = ADM8211_CSR_READ(CSR_TEST1);
1112 reg &= ~(0xF << 28);
1113 reg |= (1 << 28) | (1 << 31);
1114 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1115
1116 /* lose link after 4 lost beacons */
1117 reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1118 ADM8211_CSR_WRITE(WCSR, reg);
1119
1120 /* Disable APM, enable receive FIFO threshold, and set drain receive
1121 * threshold to store-and-forward */
1122 reg = ADM8211_CSR_READ(CMDR);
1123 reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1124 reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1125 ADM8211_CSR_WRITE(CMDR, reg);
1126
1127 adm8211_set_rate(dev);
1128
1129 /* 4-bit values:
1130 * PWR1UP = 8 * 2 ms
1131 * PWR0PAPE = 8 us or 5 us
1132 * PWR1PAPE = 1 us or 3 us
1133 * PWR0TRSW = 5 us
1134 * PWR1TRSW = 12 us
1135 * PWR0PE2 = 13 us
1136 * PWR1PE2 = 1 us
1137 * PWR0TXPE = 8 or 6 */
1138 if (priv->pdev->revision < ADM8211_REV_CA)
1139 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1140 else
1141 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1142
1143 /* Enable store and forward for transmit */
1144 priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1145 ADM8211_CSR_WRITE(NAR, priv->nar);
1146
1147 /* Reset RF */
1148 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1149 ADM8211_CSR_READ(SYNRF);
1150 msleep(10);
1151 ADM8211_CSR_WRITE(SYNRF, 0);
1152 ADM8211_CSR_READ(SYNRF);
1153 msleep(5);
1154
1155 /* Set CFP Max Duration to 0x10 TU */
1156 reg = ADM8211_CSR_READ(CFPP);
1157 reg &= ~(0xffff << 8);
1158 reg |= 0x0010 << 8;
1159 ADM8211_CSR_WRITE(CFPP, reg);
1160
1161 /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1162 * TUCNT = 0x3ff - Tu counter 1024 us */
1163 ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1164
1165 /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1166 * DIFS=50 us, EIFS=100 us */
1167 if (priv->pdev->revision < ADM8211_REV_CA)
1168 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1169 (50 << 9) | 100);
1170 else
1171 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1172 (50 << 9) | 100);
1173
1174 /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1175 * RMRD = 2346 * 8 + 1 us (max RX duration) */
1176 ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1177
1178 /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1179 ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1180
1181 /* Initialize BBP (and SYN) */
1182 adm8211_hw_init_bbp(dev);
1183
1184 /* make sure interrupts are off */
1185 ADM8211_CSR_WRITE(IER, 0);
1186
1187 /* ACK interrupts */
1188 ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1189
1190 /* Setup WEP (turns it off for now) */
1191 reg = ADM8211_CSR_READ(MACTEST);
1192 reg &= ~(7 << 20);
1193 ADM8211_CSR_WRITE(MACTEST, reg);
1194
1195 reg = ADM8211_CSR_READ(WEPCTL);
1196 reg &= ~ADM8211_WEPCTL_WEPENABLE;
1197 reg |= ADM8211_WEPCTL_WEPRXBYP;
1198 ADM8211_CSR_WRITE(WEPCTL, reg);
1199
1200 /* Clear the missed-packet counter. */
1201 ADM8211_CSR_READ(LPC);
1202 }
1203
1204 static int adm8211_hw_reset(struct ieee80211_hw *dev)
1205 {
1206 struct adm8211_priv *priv = dev->priv;
1207 u32 reg, tmp;
1208 int timeout = 100;
1209
1210 /* Power-on issue */
1211 /* TODO: check if this is necessary */
1212 ADM8211_CSR_WRITE(FRCTL, 0);
1213
1214 /* Reset the chip */
1215 tmp = ADM8211_CSR_READ(PAR);
1216 ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1217
1218 while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1219 msleep(50);
1220
1221 if (timeout <= 0)
1222 return -ETIMEDOUT;
1223
1224 ADM8211_CSR_WRITE(PAR, tmp);
1225
1226 if (priv->pdev->revision == ADM8211_REV_BA &&
1227 (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1228 priv->transceiver_type == ADM8211_RFMD2958)) {
1229 reg = ADM8211_CSR_READ(CSR_TEST1);
1230 reg |= (1 << 4) | (1 << 5);
1231 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1232 } else if (priv->pdev->revision == ADM8211_REV_CA) {
1233 reg = ADM8211_CSR_READ(CSR_TEST1);
1234 reg &= ~((1 << 4) | (1 << 5));
1235 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1236 }
1237
1238 ADM8211_CSR_WRITE(FRCTL, 0);
1239
1240 reg = ADM8211_CSR_READ(CSR_TEST0);
1241 reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1242 ADM8211_CSR_WRITE(CSR_TEST0, reg);
1243
1244 adm8211_clear_sram(dev);
1245
1246 return 0;
1247 }
1248
1249 static u64 adm8211_get_tsft(struct ieee80211_hw *dev)
1250 {
1251 struct adm8211_priv *priv = dev->priv;
1252 u32 tsftl;
1253 u64 tsft;
1254
1255 tsftl = ADM8211_CSR_READ(TSFTL);
1256 tsft = ADM8211_CSR_READ(TSFTH);
1257 tsft <<= 32;
1258 tsft |= tsftl;
1259
1260 return tsft;
1261 }
1262
1263 static void adm8211_set_interval(struct ieee80211_hw *dev,
1264 unsigned short bi, unsigned short li)
1265 {
1266 struct adm8211_priv *priv = dev->priv;
1267 u32 reg;
1268
1269 /* BP (beacon interval) = data->beacon_interval
1270 * LI (listen interval) = data->listen_interval (in beacon intervals) */
1271 reg = (bi << 16) | li;
1272 ADM8211_CSR_WRITE(BPLI, reg);
1273 }
1274
1275 static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
1276 {
1277 struct adm8211_priv *priv = dev->priv;
1278 u32 reg;
1279
1280 ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
1281 reg = ADM8211_CSR_READ(ABDA1);
1282 reg &= 0x0000ffff;
1283 reg |= (bssid[4] << 16) | (bssid[5] << 24);
1284 ADM8211_CSR_WRITE(ABDA1, reg);
1285 }
1286
1287 static int adm8211_set_ssid(struct ieee80211_hw *dev, u8 *ssid, size_t ssid_len)
1288 {
1289 struct adm8211_priv *priv = dev->priv;
1290 u8 buf[36];
1291
1292 if (ssid_len > 32)
1293 return -EINVAL;
1294
1295 memset(buf, 0, sizeof(buf));
1296 buf[0] = ssid_len;
1297 memcpy(buf + 1, ssid, ssid_len);
1298 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SSID, buf, 33);
1299 /* TODO: configure beacon for adhoc? */
1300 return 0;
1301 }
1302
1303 static int adm8211_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
1304 {
1305 struct adm8211_priv *priv = dev->priv;
1306
1307 if (conf->channel != priv->channel) {
1308 priv->channel = conf->channel;
1309 adm8211_rf_set_channel(dev, priv->channel);
1310 }
1311
1312 return 0;
1313 }
1314
1315 static int adm8211_config_interface(struct ieee80211_hw *dev, int if_id,
1316 struct ieee80211_if_conf *conf)
1317 {
1318 struct adm8211_priv *priv = dev->priv;
1319
1320 if (memcmp(conf->bssid, priv->bssid, ETH_ALEN)) {
1321 adm8211_set_bssid(dev, conf->bssid);
1322 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1323 }
1324
1325 if (conf->ssid_len != priv->ssid_len ||
1326 memcmp(conf->ssid, priv->ssid, conf->ssid_len)) {
1327 adm8211_set_ssid(dev, conf->ssid, conf->ssid_len);
1328 priv->ssid_len = conf->ssid_len;
1329 memcpy(priv->ssid, conf->ssid, conf->ssid_len);
1330 }
1331
1332 return 0;
1333 }
1334
1335 static void adm8211_configure_filter(struct ieee80211_hw *dev,
1336 unsigned int changed_flags,
1337 unsigned int *total_flags,
1338 int mc_count, struct dev_mc_list *mclist)
1339 {
1340 static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1341 struct adm8211_priv *priv = dev->priv;
1342 unsigned int bit_nr, new_flags;
1343 u32 mc_filter[2];
1344 int i;
1345
1346 new_flags = 0;
1347
1348 if (*total_flags & FIF_PROMISC_IN_BSS) {
1349 new_flags |= FIF_PROMISC_IN_BSS;
1350 priv->nar |= ADM8211_NAR_PR;
1351 priv->nar &= ~ADM8211_NAR_MM;
1352 mc_filter[1] = mc_filter[0] = ~0;
1353 } else if ((*total_flags & FIF_ALLMULTI) || (mc_count > 32)) {
1354 new_flags |= FIF_ALLMULTI;
1355 priv->nar &= ~ADM8211_NAR_PR;
1356 priv->nar |= ADM8211_NAR_MM;
1357 mc_filter[1] = mc_filter[0] = ~0;
1358 } else {
1359 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
1360 mc_filter[1] = mc_filter[0] = 0;
1361 for (i = 0; i < mc_count; i++) {
1362 if (!mclist)
1363 break;
1364 bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
1365
1366 bit_nr &= 0x3F;
1367 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1368 mclist = mclist->next;
1369 }
1370 }
1371
1372 ADM8211_IDLE_RX();
1373
1374 ADM8211_CSR_WRITE(MAR0, mc_filter[0]);
1375 ADM8211_CSR_WRITE(MAR1, mc_filter[1]);
1376 ADM8211_CSR_READ(NAR);
1377
1378 if (priv->nar & ADM8211_NAR_PR)
1379 dev->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1380 else
1381 dev->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1382
1383 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1384 adm8211_set_bssid(dev, bcast);
1385 else
1386 adm8211_set_bssid(dev, priv->bssid);
1387
1388 ADM8211_RESTORE();
1389
1390 *total_flags = new_flags;
1391 }
1392
1393 static int adm8211_add_interface(struct ieee80211_hw *dev,
1394 struct ieee80211_if_init_conf *conf)
1395 {
1396 struct adm8211_priv *priv = dev->priv;
1397 if (priv->mode != IEEE80211_IF_TYPE_MNTR)
1398 return -EOPNOTSUPP;
1399
1400 switch (conf->type) {
1401 case IEEE80211_IF_TYPE_STA:
1402 priv->mode = conf->type;
1403 break;
1404 default:
1405 return -EOPNOTSUPP;
1406 }
1407
1408 ADM8211_IDLE();
1409
1410 ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)conf->mac_addr));
1411 ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(conf->mac_addr + 4)));
1412
1413 adm8211_update_mode(dev);
1414
1415 ADM8211_RESTORE();
1416
1417 return 0;
1418 }
1419
1420 static void adm8211_remove_interface(struct ieee80211_hw *dev,
1421 struct ieee80211_if_init_conf *conf)
1422 {
1423 struct adm8211_priv *priv = dev->priv;
1424 priv->mode = IEEE80211_IF_TYPE_MNTR;
1425 }
1426
1427 static int adm8211_init_rings(struct ieee80211_hw *dev)
1428 {
1429 struct adm8211_priv *priv = dev->priv;
1430 struct adm8211_desc *desc = NULL;
1431 struct adm8211_rx_ring_info *rx_info;
1432 struct adm8211_tx_ring_info *tx_info;
1433 unsigned int i;
1434
1435 for (i = 0; i < priv->rx_ring_size; i++) {
1436 desc = &priv->rx_ring[i];
1437 desc->status = 0;
1438 desc->length = cpu_to_le32(RX_PKT_SIZE);
1439 priv->rx_buffers[i].skb = NULL;
1440 }
1441 /* Mark the end of RX ring; hw returns to base address after this
1442 * descriptor */
1443 desc->length |= cpu_to_le32(RDES1_CONTROL_RER);
1444
1445 for (i = 0; i < priv->rx_ring_size; i++) {
1446 desc = &priv->rx_ring[i];
1447 rx_info = &priv->rx_buffers[i];
1448
1449 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE);
1450 if (rx_info->skb == NULL)
1451 break;
1452 rx_info->mapping = pci_map_single(priv->pdev,
1453 skb_tail_pointer(rx_info->skb),
1454 RX_PKT_SIZE,
1455 PCI_DMA_FROMDEVICE);
1456 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1457 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1458 }
1459
1460 /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1461 for (i = 0; i < priv->tx_ring_size; i++) {
1462 desc = &priv->tx_ring[i];
1463 tx_info = &priv->tx_buffers[i];
1464
1465 tx_info->skb = NULL;
1466 tx_info->mapping = 0;
1467 desc->status = 0;
1468 }
1469 desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1470
1471 priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1472 ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1473 ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1474
1475 return 0;
1476 }
1477
1478 static void adm8211_free_rings(struct ieee80211_hw *dev)
1479 {
1480 struct adm8211_priv *priv = dev->priv;
1481 unsigned int i;
1482
1483 for (i = 0; i < priv->rx_ring_size; i++) {
1484 if (!priv->rx_buffers[i].skb)
1485 continue;
1486
1487 pci_unmap_single(
1488 priv->pdev,
1489 priv->rx_buffers[i].mapping,
1490 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
1491
1492 dev_kfree_skb(priv->rx_buffers[i].skb);
1493 }
1494
1495 for (i = 0; i < priv->tx_ring_size; i++) {
1496 if (!priv->tx_buffers[i].skb)
1497 continue;
1498
1499 pci_unmap_single(priv->pdev,
1500 priv->tx_buffers[i].mapping,
1501 priv->tx_buffers[i].skb->len,
1502 PCI_DMA_TODEVICE);
1503
1504 dev_kfree_skb(priv->tx_buffers[i].skb);
1505 }
1506 }
1507
1508 static int adm8211_start(struct ieee80211_hw *dev)
1509 {
1510 struct adm8211_priv *priv = dev->priv;
1511 int retval;
1512
1513 /* Power up MAC and RF chips */
1514 retval = adm8211_hw_reset(dev);
1515 if (retval) {
1516 printk(KERN_ERR "%s: hardware reset failed\n",
1517 wiphy_name(dev->wiphy));
1518 goto fail;
1519 }
1520
1521 retval = adm8211_init_rings(dev);
1522 if (retval) {
1523 printk(KERN_ERR "%s: failed to initialize rings\n",
1524 wiphy_name(dev->wiphy));
1525 goto fail;
1526 }
1527
1528 /* Init hardware */
1529 adm8211_hw_init(dev);
1530 adm8211_rf_set_channel(dev, priv->channel);
1531
1532 retval = request_irq(priv->pdev->irq, &adm8211_interrupt,
1533 IRQF_SHARED, "adm8211", dev);
1534 if (retval) {
1535 printk(KERN_ERR "%s: failed to register IRQ handler\n",
1536 wiphy_name(dev->wiphy));
1537 goto fail;
1538 }
1539
1540 ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1541 ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1542 ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1543 priv->mode = IEEE80211_IF_TYPE_MNTR;
1544 adm8211_update_mode(dev);
1545 ADM8211_CSR_WRITE(RDR, 0);
1546
1547 adm8211_set_interval(dev, 100, 10);
1548 return 0;
1549
1550 fail:
1551 return retval;
1552 }
1553
1554 static void adm8211_stop(struct ieee80211_hw *dev)
1555 {
1556 struct adm8211_priv *priv = dev->priv;
1557
1558 priv->mode = IEEE80211_IF_TYPE_INVALID;
1559 priv->nar = 0;
1560 ADM8211_CSR_WRITE(NAR, 0);
1561 ADM8211_CSR_WRITE(IER, 0);
1562 ADM8211_CSR_READ(NAR);
1563
1564 free_irq(priv->pdev->irq, dev);
1565
1566 adm8211_free_rings(dev);
1567 }
1568
1569 static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
1570 int plcp_signal, int short_preamble)
1571 {
1572 /* Alternative calculation from NetBSD: */
1573
1574 /* IEEE 802.11b durations for DSSS PHY in microseconds */
1575 #define IEEE80211_DUR_DS_LONG_PREAMBLE 144
1576 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
1577 #define IEEE80211_DUR_DS_FAST_PLCPHDR 24
1578 #define IEEE80211_DUR_DS_SLOW_PLCPHDR 48
1579 #define IEEE80211_DUR_DS_SLOW_ACK 112
1580 #define IEEE80211_DUR_DS_FAST_ACK 56
1581 #define IEEE80211_DUR_DS_SLOW_CTS 112
1582 #define IEEE80211_DUR_DS_FAST_CTS 56
1583 #define IEEE80211_DUR_DS_SLOT 20
1584 #define IEEE80211_DUR_DS_SIFS 10
1585
1586 int remainder;
1587
1588 *dur = (80 * (24 + payload_len) + plcp_signal - 1)
1589 / plcp_signal;
1590
1591 if (plcp_signal <= PLCP_SIGNAL_2M)
1592 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
1593 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1594 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1595 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1596 IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
1597 else
1598 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
1599 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1600 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1601 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1602 IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
1603
1604 /* lengthen duration if long preamble */
1605 if (!short_preamble)
1606 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
1607 IEEE80211_DUR_DS_SHORT_PREAMBLE) +
1608 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
1609 IEEE80211_DUR_DS_FAST_PLCPHDR);
1610
1611
1612 *plcp = (80 * len) / plcp_signal;
1613 remainder = (80 * len) % plcp_signal;
1614 if (plcp_signal == PLCP_SIGNAL_11M &&
1615 remainder <= 30 && remainder > 0)
1616 *plcp = (*plcp | 0x8000) + 1;
1617 else if (remainder)
1618 (*plcp)++;
1619 }
1620
1621 /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
1622 static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1623 u16 plcp_signal,
1624 struct ieee80211_tx_control *control,
1625 size_t hdrlen)
1626 {
1627 struct adm8211_priv *priv = dev->priv;
1628 unsigned long flags;
1629 dma_addr_t mapping;
1630 unsigned int entry;
1631 u32 flag;
1632
1633 mapping = pci_map_single(priv->pdev, skb->data, skb->len,
1634 PCI_DMA_TODEVICE);
1635
1636 spin_lock_irqsave(&priv->lock, flags);
1637
1638 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1639 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1640 else
1641 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1642
1643 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1644 ieee80211_stop_queue(dev, 0);
1645
1646 entry = priv->cur_tx % priv->tx_ring_size;
1647
1648 priv->tx_buffers[entry].skb = skb;
1649 priv->tx_buffers[entry].mapping = mapping;
1650 memcpy(&priv->tx_buffers[entry].tx_control, control, sizeof(*control));
1651 priv->tx_buffers[entry].hdrlen = hdrlen;
1652 priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
1653
1654 if (entry == priv->tx_ring_size - 1)
1655 flag |= TDES1_CONTROL_TER;
1656 priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
1657
1658 /* Set TX rate (SIGNAL field in PLCP PPDU format) */
1659 flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
1660 priv->tx_ring[entry].status = cpu_to_le32(flag);
1661
1662 priv->cur_tx++;
1663
1664 spin_unlock_irqrestore(&priv->lock, flags);
1665
1666 /* Trigger transmit poll */
1667 ADM8211_CSR_WRITE(TDR, 0);
1668 }
1669
1670 /* Put adm8211_tx_hdr on skb and transmit */
1671 static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
1672 struct ieee80211_tx_control *control)
1673 {
1674 struct adm8211_tx_hdr *txhdr;
1675 u16 fc;
1676 size_t payload_len, hdrlen;
1677 int plcp, dur, len, plcp_signal, short_preamble;
1678 struct ieee80211_hdr *hdr;
1679
1680 if (control->tx_rate < 0) {
1681 short_preamble = 1;
1682 plcp_signal = -control->tx_rate;
1683 } else {
1684 short_preamble = 0;
1685 plcp_signal = control->tx_rate;
1686 }
1687
1688 hdr = (struct ieee80211_hdr *)skb->data;
1689 fc = le16_to_cpu(hdr->frame_control) & ~IEEE80211_FCTL_PROTECTED;
1690 hdrlen = ieee80211_get_hdrlen(fc);
1691 memcpy(skb->cb, skb->data, hdrlen);
1692 hdr = (struct ieee80211_hdr *)skb->cb;
1693 skb_pull(skb, hdrlen);
1694 payload_len = skb->len;
1695
1696 txhdr = (struct adm8211_tx_hdr *) skb_push(skb, sizeof(*txhdr));
1697 memset(txhdr, 0, sizeof(*txhdr));
1698 memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
1699 txhdr->signal = plcp_signal;
1700 txhdr->frame_body_size = cpu_to_le16(payload_len);
1701 txhdr->frame_control = hdr->frame_control;
1702
1703 len = hdrlen + payload_len + FCS_LEN;
1704 if (fc & IEEE80211_FCTL_PROTECTED)
1705 len += 8;
1706
1707 txhdr->frag = cpu_to_le16(0x0FFF);
1708 adm8211_calc_durations(&dur, &plcp, payload_len,
1709 len, plcp_signal, short_preamble);
1710 txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1711 txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1712 txhdr->dur_frag_head = cpu_to_le16(dur);
1713 txhdr->dur_frag_tail = cpu_to_le16(dur);
1714
1715 txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1716
1717 if (short_preamble)
1718 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1719
1720 if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
1721 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1722
1723 if (fc & IEEE80211_FCTL_PROTECTED)
1724 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_WEP_ENGINE);
1725
1726 txhdr->retry_limit = control->retry_limit;
1727
1728 adm8211_tx_raw(dev, skb, plcp_signal, control, hdrlen);
1729
1730 return NETDEV_TX_OK;
1731 }
1732
1733 static int adm8211_alloc_rings(struct ieee80211_hw *dev)
1734 {
1735 struct adm8211_priv *priv = dev->priv;
1736 unsigned int ring_size;
1737
1738 priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
1739 sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
1740 if (!priv->rx_buffers)
1741 return -ENOMEM;
1742
1743 priv->tx_buffers = (void *)priv->rx_buffers +
1744 sizeof(*priv->rx_buffers) * priv->rx_ring_size;
1745
1746 /* Allocate TX/RX descriptors */
1747 ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
1748 sizeof(struct adm8211_desc) * priv->tx_ring_size;
1749 priv->rx_ring = pci_alloc_consistent(priv->pdev, ring_size,
1750 &priv->rx_ring_dma);
1751
1752 if (!priv->rx_ring) {
1753 kfree(priv->rx_buffers);
1754 priv->rx_buffers = NULL;
1755 priv->tx_buffers = NULL;
1756 return -ENOMEM;
1757 }
1758
1759 priv->tx_ring = (struct adm8211_desc *)(priv->rx_ring +
1760 priv->rx_ring_size);
1761 priv->tx_ring_dma = priv->rx_ring_dma +
1762 sizeof(struct adm8211_desc) * priv->rx_ring_size;
1763
1764 return 0;
1765 }
1766
1767 static const struct ieee80211_ops adm8211_ops = {
1768 .tx = adm8211_tx,
1769 .start = adm8211_start,
1770 .stop = adm8211_stop,
1771 .add_interface = adm8211_add_interface,
1772 .remove_interface = adm8211_remove_interface,
1773 .config = adm8211_config,
1774 .config_interface = adm8211_config_interface,
1775 .configure_filter = adm8211_configure_filter,
1776 .get_stats = adm8211_get_stats,
1777 .get_tx_stats = adm8211_get_tx_stats,
1778 .get_tsf = adm8211_get_tsft
1779 };
1780
1781 static int __devinit adm8211_probe(struct pci_dev *pdev,
1782 const struct pci_device_id *id)
1783 {
1784 struct ieee80211_hw *dev;
1785 struct adm8211_priv *priv;
1786 unsigned long mem_addr, mem_len;
1787 unsigned int io_addr, io_len;
1788 int err;
1789 u32 reg;
1790 u8 perm_addr[ETH_ALEN];
1791 DECLARE_MAC_BUF(mac);
1792
1793 err = pci_enable_device(pdev);
1794 if (err) {
1795 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1796 pci_name(pdev));
1797 return err;
1798 }
1799
1800 io_addr = pci_resource_start(pdev, 0);
1801 io_len = pci_resource_len(pdev, 0);
1802 mem_addr = pci_resource_start(pdev, 1);
1803 mem_len = pci_resource_len(pdev, 1);
1804 if (io_len < 256 || mem_len < 1024) {
1805 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1806 pci_name(pdev));
1807 goto err_disable_pdev;
1808 }
1809
1810
1811 /* check signature */
1812 pci_read_config_dword(pdev, 0x80 /* CR32 */, &reg);
1813 if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1814 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1815 pci_name(pdev), reg);
1816 goto err_disable_pdev;
1817 }
1818
1819 err = pci_request_regions(pdev, "adm8211");
1820 if (err) {
1821 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1822 pci_name(pdev));
1823 return err; /* someone else grabbed it? don't disable it */
1824 }
1825
1826 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) ||
1827 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
1828 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1829 pci_name(pdev));
1830 goto err_free_reg;
1831 }
1832
1833 pci_set_master(pdev);
1834
1835 dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1836 if (!dev) {
1837 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1838 pci_name(pdev));
1839 err = -ENOMEM;
1840 goto err_free_reg;
1841 }
1842 priv = dev->priv;
1843 priv->pdev = pdev;
1844
1845 spin_lock_init(&priv->lock);
1846
1847 SET_IEEE80211_DEV(dev, &pdev->dev);
1848
1849 pci_set_drvdata(pdev, dev);
1850
1851 priv->map = pci_iomap(pdev, 1, mem_len);
1852 if (!priv->map)
1853 priv->map = pci_iomap(pdev, 0, io_len);
1854
1855 if (!priv->map) {
1856 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1857 pci_name(pdev));
1858 goto err_free_dev;
1859 }
1860
1861 priv->rx_ring_size = rx_ring_size;
1862 priv->tx_ring_size = tx_ring_size;
1863
1864 if (adm8211_alloc_rings(dev)) {
1865 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1866 pci_name(pdev));
1867 goto err_iounmap;
1868 }
1869
1870 *(u32 *)perm_addr = le32_to_cpu((__force __le32)ADM8211_CSR_READ(PAR0));
1871 *(u16 *)&perm_addr[4] =
1872 le16_to_cpu((__force __le16)ADM8211_CSR_READ(PAR1) & 0xFFFF);
1873
1874 if (!is_valid_ether_addr(perm_addr)) {
1875 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1876 pci_name(pdev));
1877 random_ether_addr(perm_addr);
1878 }
1879 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1880
1881 dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1882 dev->flags = IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED;
1883 /* IEEE80211_HW_RX_INCLUDES_FCS in promisc mode */
1884
1885 dev->channel_change_time = 1000;
1886 dev->max_rssi = 100; /* FIXME: find better value */
1887
1888 priv->modes[0].mode = MODE_IEEE80211B;
1889 /* channel info filled in by adm8211_read_eeprom */
1890 memcpy(priv->rates, adm8211_rates, sizeof(adm8211_rates));
1891 priv->modes[0].num_rates = ARRAY_SIZE(adm8211_rates);
1892 priv->modes[0].rates = priv->rates;
1893
1894 dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1895
1896 priv->retry_limit = 3;
1897 priv->ant_power = 0x40;
1898 priv->tx_power = 0x40;
1899 priv->lpf_cutoff = 0xFF;
1900 priv->lnags_threshold = 0xFF;
1901 priv->mode = IEEE80211_IF_TYPE_INVALID;
1902
1903 /* Power-on issue. EEPROM won't read correctly without */
1904 if (pdev->revision >= ADM8211_REV_BA) {
1905 ADM8211_CSR_WRITE(FRCTL, 0);
1906 ADM8211_CSR_READ(FRCTL);
1907 ADM8211_CSR_WRITE(FRCTL, 1);
1908 ADM8211_CSR_READ(FRCTL);
1909 msleep(100);
1910 }
1911
1912 err = adm8211_read_eeprom(dev);
1913 if (err) {
1914 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1915 pci_name(pdev));
1916 goto err_free_desc;
1917 }
1918
1919 priv->channel = priv->modes[0].channels[0].chan;
1920
1921 err = ieee80211_register_hwmode(dev, &priv->modes[0]);
1922 if (err) {
1923 printk(KERN_ERR "%s (adm8211): Can't register hwmode\n",
1924 pci_name(pdev));
1925 goto err_free_desc;
1926 }
1927
1928 err = ieee80211_register_hw(dev);
1929 if (err) {
1930 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1931 pci_name(pdev));
1932 goto err_free_desc;
1933 }
1934
1935 printk(KERN_INFO "%s: hwaddr %s, Rev 0x%02x\n",
1936 wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
1937 pdev->revision);
1938
1939 return 0;
1940
1941 err_free_desc:
1942 pci_free_consistent(pdev,
1943 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1944 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1945 priv->rx_ring, priv->rx_ring_dma);
1946 kfree(priv->rx_buffers);
1947
1948 err_iounmap:
1949 pci_iounmap(pdev, priv->map);
1950
1951 err_free_dev:
1952 pci_set_drvdata(pdev, NULL);
1953 ieee80211_free_hw(dev);
1954
1955 err_free_reg:
1956 pci_release_regions(pdev);
1957
1958 err_disable_pdev:
1959 pci_disable_device(pdev);
1960 return err;
1961 }
1962
1963
1964 static void __devexit adm8211_remove(struct pci_dev *pdev)
1965 {
1966 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1967 struct adm8211_priv *priv;
1968
1969 if (!dev)
1970 return;
1971
1972 ieee80211_unregister_hw(dev);
1973
1974 priv = dev->priv;
1975
1976 pci_free_consistent(pdev,
1977 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1978 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1979 priv->rx_ring, priv->rx_ring_dma);
1980
1981 kfree(priv->rx_buffers);
1982 kfree(priv->eeprom);
1983 pci_iounmap(pdev, priv->map);
1984 pci_release_regions(pdev);
1985 pci_disable_device(pdev);
1986 ieee80211_free_hw(dev);
1987 }
1988
1989
1990 #ifdef CONFIG_PM
1991 static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
1992 {
1993 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1994 struct adm8211_priv *priv = dev->priv;
1995
1996 if (priv->mode != IEEE80211_IF_TYPE_INVALID) {
1997 ieee80211_stop_queues(dev);
1998 adm8211_stop(dev);
1999 }
2000
2001 pci_save_state(pdev);
2002 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2003 return 0;
2004 }
2005
2006 static int adm8211_resume(struct pci_dev *pdev)
2007 {
2008 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
2009 struct adm8211_priv *priv = dev->priv;
2010
2011 pci_set_power_state(pdev, PCI_D0);
2012 pci_restore_state(pdev);
2013
2014 if (priv->mode != IEEE80211_IF_TYPE_INVALID) {
2015 adm8211_start(dev);
2016 ieee80211_start_queues(dev);
2017 }
2018
2019 return 0;
2020 }
2021 #endif /* CONFIG_PM */
2022
2023
2024 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
2025
2026 /* TODO: implement enable_wake */
2027 static struct pci_driver adm8211_driver = {
2028 .name = "adm8211",
2029 .id_table = adm8211_pci_id_table,
2030 .probe = adm8211_probe,
2031 .remove = __devexit_p(adm8211_remove),
2032 #ifdef CONFIG_PM
2033 .suspend = adm8211_suspend,
2034 .resume = adm8211_resume,
2035 #endif /* CONFIG_PM */
2036 };
2037
2038
2039
2040 static int __init adm8211_init(void)
2041 {
2042 return pci_register_driver(&adm8211_driver);
2043 }
2044
2045
2046 static void __exit adm8211_exit(void)
2047 {
2048 pci_unregister_driver(&adm8211_driver);
2049 }
2050
2051
2052 module_init(adm8211_init);
2053 module_exit(adm8211_exit);
Linux kernel - Deliverables
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