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1// SPDX-License-Identifier: GPL-2.0-only
2
3/*
4 * Linux device driver for ADMtek ADM8211 (IEEE 802.11b MAC/BBP)
5 *
6 * Copyright (c) 2003, Jouni Malinen <j@w1.fi>
7 * Copyright (c) 2004-2007, Michael Wu <flamingice@sourmilk.net>
8 * Some parts copyright (c) 2003 by David Young <dyoung@pobox.com>
9 * and used with permission.
10 *
11 * Much thanks to Infineon-ADMtek for their support of this driver.
12 */
13
14#include <linux/interrupt.h>
15#include <linux/if.h>
16#include <linux/skbuff.h>
17#include <linux/slab.h>
18#include <linux/etherdevice.h>
19#include <linux/pci.h>
20#include <linux/delay.h>
21#include <linux/crc32.h>
22#include <linux/eeprom_93cx6.h>
23#include <linux/module.h>
24#include <net/mac80211.h>
25
26#include "adm8211.h"
27
28MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
29MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");
30MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
31MODULE_LICENSE("GPL");
32
33static unsigned int tx_ring_size __read_mostly = 16;
34static unsigned int rx_ring_size __read_mostly = 16;
35
36module_param(tx_ring_size, uint, 0);
37module_param(rx_ring_size, uint, 0);
38
39static const struct pci_device_id adm8211_pci_id_table[] = {
40 /* ADMtek ADM8211 */
41 { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
42 { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
43 { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
44 { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
45 { 0 }
46};
47
48static struct ieee80211_rate adm8211_rates[] = {
49 { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
50 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
51 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
52 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
53 { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */
54};
55
56static const struct ieee80211_channel adm8211_channels[] = {
57 { .center_freq = 2412},
58 { .center_freq = 2417},
59 { .center_freq = 2422},
60 { .center_freq = 2427},
61 { .center_freq = 2432},
62 { .center_freq = 2437},
63 { .center_freq = 2442},
64 { .center_freq = 2447},
65 { .center_freq = 2452},
66 { .center_freq = 2457},
67 { .center_freq = 2462},
68 { .center_freq = 2467},
69 { .center_freq = 2472},
70 { .center_freq = 2484},
71};
72
73
74static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
75{
76 struct adm8211_priv *priv = eeprom->data;
77 u32 reg = ADM8211_CSR_READ(SPR);
78
79 eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
80 eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
81 eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
82 eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
83}
84
85static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
86{
87 struct adm8211_priv *priv = eeprom->data;
88 u32 reg = 0x4000 | ADM8211_SPR_SRS;
89
90 if (eeprom->reg_data_in)
91 reg |= ADM8211_SPR_SDI;
92 if (eeprom->reg_data_out)
93 reg |= ADM8211_SPR_SDO;
94 if (eeprom->reg_data_clock)
95 reg |= ADM8211_SPR_SCLK;
96 if (eeprom->reg_chip_select)
97 reg |= ADM8211_SPR_SCS;
98
99 ADM8211_CSR_WRITE(SPR, reg);
100 ADM8211_CSR_READ(SPR); /* eeprom_delay */
101}
102
103static int adm8211_read_eeprom(struct ieee80211_hw *dev)
104{
105 struct adm8211_priv *priv = dev->priv;
106 unsigned int words, i;
107 struct ieee80211_chan_range chan_range;
108 u16 cr49;
109 struct eeprom_93cx6 eeprom = {
110 .data = priv,
111 .register_read = adm8211_eeprom_register_read,
112 .register_write = adm8211_eeprom_register_write
113 };
114
115 if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
116 /* 256 * 16-bit = 512 bytes */
117 eeprom.width = PCI_EEPROM_WIDTH_93C66;
118 words = 256;
119 } else {
120 /* 64 * 16-bit = 128 bytes */
121 eeprom.width = PCI_EEPROM_WIDTH_93C46;
122 words = 64;
123 }
124
125 priv->eeprom_len = words * 2;
126 priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
127 if (!priv->eeprom)
128 return -ENOMEM;
129
130 eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words);
131
132 cr49 = le16_to_cpu(priv->eeprom->cr49);
133 priv->rf_type = (cr49 >> 3) & 0x7;
134 switch (priv->rf_type) {
135 case ADM8211_TYPE_INTERSIL:
136 case ADM8211_TYPE_RFMD:
137 case ADM8211_TYPE_MARVEL:
138 case ADM8211_TYPE_AIROHA:
139 case ADM8211_TYPE_ADMTEK:
140 break;
141
142 default:
143 if (priv->pdev->revision < ADM8211_REV_CA)
144 priv->rf_type = ADM8211_TYPE_RFMD;
145 else
146 priv->rf_type = ADM8211_TYPE_AIROHA;
147
148 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
149 pci_name(priv->pdev), (cr49 >> 3) & 0x7);
150 }
151
152 priv->bbp_type = cr49 & 0x7;
153 switch (priv->bbp_type) {
154 case ADM8211_TYPE_INTERSIL:
155 case ADM8211_TYPE_RFMD:
156 case ADM8211_TYPE_MARVEL:
157 case ADM8211_TYPE_AIROHA:
158 case ADM8211_TYPE_ADMTEK:
159 break;
160 default:
161 if (priv->pdev->revision < ADM8211_REV_CA)
162 priv->bbp_type = ADM8211_TYPE_RFMD;
163 else
164 priv->bbp_type = ADM8211_TYPE_ADMTEK;
165
166 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
167 pci_name(priv->pdev), cr49 >> 3);
168 }
169
170 if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
171 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
172 pci_name(priv->pdev), priv->eeprom->country_code);
173
174 chan_range = cranges[2];
175 } else
176 chan_range = cranges[priv->eeprom->country_code];
177
178 printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
179 pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
180
181 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels));
182
183 memcpy(priv->channels, adm8211_channels, sizeof(priv->channels));
184 priv->band.channels = priv->channels;
185 priv->band.n_channels = ARRAY_SIZE(adm8211_channels);
186 priv->band.bitrates = adm8211_rates;
187 priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates);
188
189 for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
190 if (i < chan_range.min || i > chan_range.max)
191 priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED;
192
193 switch (priv->eeprom->specific_bbptype) {
194 case ADM8211_BBP_RFMD3000:
195 case ADM8211_BBP_RFMD3002:
196 case ADM8211_BBP_ADM8011:
197 priv->specific_bbptype = priv->eeprom->specific_bbptype;
198 break;
199
200 default:
201 if (priv->pdev->revision < ADM8211_REV_CA)
202 priv->specific_bbptype = ADM8211_BBP_RFMD3000;
203 else
204 priv->specific_bbptype = ADM8211_BBP_ADM8011;
205
206 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
207 pci_name(priv->pdev), priv->eeprom->specific_bbptype);
208 }
209
210 switch (priv->eeprom->specific_rftype) {
211 case ADM8211_RFMD2948:
212 case ADM8211_RFMD2958:
213 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
214 case ADM8211_MAX2820:
215 case ADM8211_AL2210L:
216 priv->transceiver_type = priv->eeprom->specific_rftype;
217 break;
218
219 default:
220 if (priv->pdev->revision == ADM8211_REV_BA)
221 priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
222 else if (priv->pdev->revision == ADM8211_REV_CA)
223 priv->transceiver_type = ADM8211_AL2210L;
224 else if (priv->pdev->revision == ADM8211_REV_AB)
225 priv->transceiver_type = ADM8211_RFMD2948;
226
227 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
228 pci_name(priv->pdev), priv->eeprom->specific_rftype);
229
230 break;
231 }
232
233 printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
234 "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
235 priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
236
237 return 0;
238}
239
240static inline void adm8211_write_sram(struct ieee80211_hw *dev,
241 u32 addr, u32 data)
242{
243 struct adm8211_priv *priv = dev->priv;
244
245 ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
246 (priv->pdev->revision < ADM8211_REV_BA ?
247 0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
248 ADM8211_CSR_READ(WEPCTL);
249 msleep(1);
250
251 ADM8211_CSR_WRITE(WESK, data);
252 ADM8211_CSR_READ(WESK);
253 msleep(1);
254}
255
256static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
257 unsigned int addr, u8 *buf,
258 unsigned int len)
259{
260 struct adm8211_priv *priv = dev->priv;
261 u32 reg = ADM8211_CSR_READ(WEPCTL);
262 unsigned int i;
263
264 if (priv->pdev->revision < ADM8211_REV_BA) {
265 for (i = 0; i < len; i += 2) {
266 u16 val = buf[i] | (buf[i + 1] << 8);
267 adm8211_write_sram(dev, addr + i / 2, val);
268 }
269 } else {
270 for (i = 0; i < len; i += 4) {
271 u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
272 (buf[i + 2] << 16) | (buf[i + 3] << 24);
273 adm8211_write_sram(dev, addr + i / 4, val);
274 }
275 }
276
277 ADM8211_CSR_WRITE(WEPCTL, reg);
278}
279
280static void adm8211_clear_sram(struct ieee80211_hw *dev)
281{
282 struct adm8211_priv *priv = dev->priv;
283 u32 reg = ADM8211_CSR_READ(WEPCTL);
284 unsigned int addr;
285
286 for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
287 adm8211_write_sram(dev, addr, 0);
288
289 ADM8211_CSR_WRITE(WEPCTL, reg);
290}
291
292static int adm8211_get_stats(struct ieee80211_hw *dev,
293 struct ieee80211_low_level_stats *stats)
294{
295 struct adm8211_priv *priv = dev->priv;
296
297 memcpy(stats, &priv->stats, sizeof(*stats));
298
299 return 0;
300}
301
302static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
303{
304 struct adm8211_priv *priv = dev->priv;
305 unsigned int dirty_tx;
306
307 spin_lock(&priv->lock);
308
309 for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
310 unsigned int entry = dirty_tx % priv->tx_ring_size;
311 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
312 struct ieee80211_tx_info *txi;
313 struct adm8211_tx_ring_info *info;
314 struct sk_buff *skb;
315
316 if (status & TDES0_CONTROL_OWN ||
317 !(status & TDES0_CONTROL_DONE))
318 break;
319
320 info = &priv->tx_buffers[entry];
321 skb = info->skb;
322 txi = IEEE80211_SKB_CB(skb);
323
324 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
325
326 dma_unmap_single(&priv->pdev->dev, info->mapping,
327 info->skb->len, DMA_TO_DEVICE);
328
329 ieee80211_tx_info_clear_status(txi);
330
331 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
332 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
333 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
334 !(status & TDES0_STATUS_ES))
335 txi->flags |= IEEE80211_TX_STAT_ACK;
336
337 ieee80211_tx_status_irqsafe(dev, skb);
338
339 info->skb = NULL;
340 }
341
342 if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
343 ieee80211_wake_queue(dev, 0);
344
345 priv->dirty_tx = dirty_tx;
346 spin_unlock(&priv->lock);
347}
348
349
350static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
351{
352 struct adm8211_priv *priv = dev->priv;
353 unsigned int entry = priv->cur_rx % priv->rx_ring_size;
354 u32 status;
355 unsigned int pktlen;
356 struct sk_buff *skb, *newskb;
357 unsigned int limit = priv->rx_ring_size;
358 u8 rssi, rate;
359
360 while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
361 if (!limit--)
362 break;
363
364 status = le32_to_cpu(priv->rx_ring[entry].status);
365 rate = (status & RDES0_STATUS_RXDR) >> 12;
366 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
367 RDES1_STATUS_RSSI;
368
369 pktlen = status & RDES0_STATUS_FL;
370 if (pktlen > RX_PKT_SIZE) {
371 if (net_ratelimit())
372 wiphy_debug(dev->wiphy, "frame too long (%d)\n",
373 pktlen);
374 pktlen = RX_PKT_SIZE;
375 }
376
377 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
378 skb = NULL; /* old buffer will be reused */
379 /* TODO: update RX error stats */
380 /* TODO: check RDES0_STATUS_CRC*E */
381 } else if (pktlen < RX_COPY_BREAK) {
382 skb = dev_alloc_skb(pktlen);
383 if (skb) {
384 dma_sync_single_for_cpu(&priv->pdev->dev,
385 priv->rx_buffers[entry].mapping,
386 pktlen,
387 DMA_FROM_DEVICE);
388 skb_put_data(skb,
389 skb_tail_pointer(priv->rx_buffers[entry].skb),
390 pktlen);
391 dma_sync_single_for_device(&priv->pdev->dev,
392 priv->rx_buffers[entry].mapping,
393 RX_PKT_SIZE,
394 DMA_FROM_DEVICE);
395 }
396 } else {
397 newskb = dev_alloc_skb(RX_PKT_SIZE);
398 if (newskb) {
399 skb = priv->rx_buffers[entry].skb;
400 skb_put(skb, pktlen);
401 dma_unmap_single(&priv->pdev->dev,
402 priv->rx_buffers[entry].mapping,
403 RX_PKT_SIZE, DMA_FROM_DEVICE);
404 priv->rx_buffers[entry].skb = newskb;
405 priv->rx_buffers[entry].mapping =
406 dma_map_single(&priv->pdev->dev,
407 skb_tail_pointer(newskb),
408 RX_PKT_SIZE,
409 DMA_FROM_DEVICE);
410 if (dma_mapping_error(&priv->pdev->dev,
411 priv->rx_buffers[entry].mapping)) {
412 priv->rx_buffers[entry].skb = NULL;
413 dev_kfree_skb(newskb);
414 skb = NULL;
415 /* TODO: update rx dropped stats */
416 }
417 } else {
418 skb = NULL;
419 /* TODO: update rx dropped stats */
420 }
421
422 priv->rx_ring[entry].buffer1 =
423 cpu_to_le32(priv->rx_buffers[entry].mapping);
424 }
425
426 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
427 RDES0_STATUS_SQL);
428 priv->rx_ring[entry].length =
429 cpu_to_le32(RX_PKT_SIZE |
430 (entry == priv->rx_ring_size - 1 ?
431 RDES1_CONTROL_RER : 0));
432
433 if (skb) {
434 struct ieee80211_rx_status rx_status = {0};
435
436 if (priv->pdev->revision < ADM8211_REV_CA)
437 rx_status.signal = rssi;
438 else
439 rx_status.signal = 100 - rssi;
440
441 rx_status.rate_idx = rate;
442
443 rx_status.freq = adm8211_channels[priv->channel - 1].center_freq;
444 rx_status.band = NL80211_BAND_2GHZ;
445
446 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
447 ieee80211_rx_irqsafe(dev, skb);
448 }
449
450 entry = (++priv->cur_rx) % priv->rx_ring_size;
451 }
452
453 /* TODO: check LPC and update stats? */
454}
455
456
457static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
458{
459#define ADM8211_INT(x) \
460do { \
461 if (unlikely(stsr & ADM8211_STSR_ ## x)) \
462 wiphy_debug(dev->wiphy, "%s\n", #x); \
463} while (0)
464
465 struct ieee80211_hw *dev = dev_id;
466 struct adm8211_priv *priv = dev->priv;
467 u32 stsr = ADM8211_CSR_READ(STSR);
468 ADM8211_CSR_WRITE(STSR, stsr);
469 if (stsr == 0xffffffff)
470 return IRQ_HANDLED;
471
472 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
473 return IRQ_HANDLED;
474
475 if (stsr & ADM8211_STSR_RCI)
476 adm8211_interrupt_rci(dev);
477 if (stsr & ADM8211_STSR_TCI)
478 adm8211_interrupt_tci(dev);
479
480 ADM8211_INT(PCF);
481 ADM8211_INT(BCNTC);
482 ADM8211_INT(GPINT);
483 ADM8211_INT(ATIMTC);
484 ADM8211_INT(TSFTF);
485 ADM8211_INT(TSCZ);
486 ADM8211_INT(SQL);
487 ADM8211_INT(WEPTD);
488 ADM8211_INT(ATIME);
489 ADM8211_INT(TEIS);
490 ADM8211_INT(FBE);
491 ADM8211_INT(REIS);
492 ADM8211_INT(GPTT);
493 ADM8211_INT(RPS);
494 ADM8211_INT(RDU);
495 ADM8211_INT(TUF);
496 ADM8211_INT(TPS);
497
498 return IRQ_HANDLED;
499
500#undef ADM8211_INT
501}
502
503#define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
504static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \
505 u16 addr, u32 value) { \
506 struct adm8211_priv *priv = dev->priv; \
507 unsigned int i; \
508 u32 reg, bitbuf; \
509 \
510 value &= v_mask; \
511 addr &= a_mask; \
512 bitbuf = (value << v_shift) | (addr << a_shift); \
513 \
514 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \
515 ADM8211_CSR_READ(SYNRF); \
516 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \
517 ADM8211_CSR_READ(SYNRF); \
518 \
519 if (prewrite) { \
520 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \
521 ADM8211_CSR_READ(SYNRF); \
522 } \
523 \
524 for (i = 0; i <= bits; i++) { \
525 if (bitbuf & (1 << (bits - i))) \
526 reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \
527 else \
528 reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \
529 \
530 ADM8211_CSR_WRITE(SYNRF, reg); \
531 ADM8211_CSR_READ(SYNRF); \
532 \
533 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
534 ADM8211_CSR_READ(SYNRF); \
535 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
536 ADM8211_CSR_READ(SYNRF); \
537 } \
538 \
539 if (postwrite == 1) { \
540 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \
541 ADM8211_CSR_READ(SYNRF); \
542 } \
543 if (postwrite == 2) { \
544 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \
545 ADM8211_CSR_READ(SYNRF); \
546 } \
547 \
548 ADM8211_CSR_WRITE(SYNRF, 0); \
549 ADM8211_CSR_READ(SYNRF); \
550}
551
552WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1)
553WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1)
554WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
555WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2)
556
557#undef WRITE_SYN
558
559static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
560{
561 struct adm8211_priv *priv = dev->priv;
562 unsigned int timeout;
563 u32 reg;
564
565 timeout = 10;
566 while (timeout > 0) {
567 reg = ADM8211_CSR_READ(BBPCTL);
568 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
569 break;
570 timeout--;
571 msleep(2);
572 }
573
574 if (timeout == 0) {
575 wiphy_debug(dev->wiphy,
576 "adm8211_write_bbp(%d,%d) failed prewrite (reg=0x%08x)\n",
577 addr, data, reg);
578 return -ETIMEDOUT;
579 }
580
581 switch (priv->bbp_type) {
582 case ADM8211_TYPE_INTERSIL:
583 reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */
584 break;
585 case ADM8211_TYPE_RFMD:
586 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
587 (0x01 << 18);
588 break;
589 case ADM8211_TYPE_ADMTEK:
590 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
591 (0x05 << 18);
592 break;
593 }
594 reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
595
596 ADM8211_CSR_WRITE(BBPCTL, reg);
597
598 timeout = 10;
599 while (timeout > 0) {
600 reg = ADM8211_CSR_READ(BBPCTL);
601 if (!(reg & ADM8211_BBPCTL_WR))
602 break;
603 timeout--;
604 msleep(2);
605 }
606
607 if (timeout == 0) {
608 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
609 ~ADM8211_BBPCTL_WR);
610 wiphy_debug(dev->wiphy,
611 "adm8211_write_bbp(%d,%d) failed postwrite (reg=0x%08x)\n",
612 addr, data, reg);
613 return -ETIMEDOUT;
614 }
615
616 return 0;
617}
618
619static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
620{
621 static const u32 adm8211_rfmd2958_reg5[] =
622 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
623 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
624 static const u32 adm8211_rfmd2958_reg6[] =
625 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
626 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
627
628 struct adm8211_priv *priv = dev->priv;
629 u8 ant_power = priv->ant_power > 0x3F ?
630 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
631 u8 tx_power = priv->tx_power > 0x3F ?
632 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
633 u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
634 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
635 u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
636 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
637 u32 reg;
638
639 ADM8211_IDLE();
640
641 /* Program synthesizer to new channel */
642 switch (priv->transceiver_type) {
643 case ADM8211_RFMD2958:
644 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
645 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
646 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
647
648 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
649 adm8211_rfmd2958_reg5[chan - 1]);
650 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
651 adm8211_rfmd2958_reg6[chan - 1]);
652 break;
653
654 case ADM8211_RFMD2948:
655 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
656 SI4126_MAIN_XINDIV2);
657 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
658 SI4126_POWERDOWN_PDIB |
659 SI4126_POWERDOWN_PDRB);
660 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
661 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
662 (chan == 14 ?
663 2110 : (2033 + (chan * 5))));
664 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
665 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
666 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
667 break;
668
669 case ADM8211_MAX2820:
670 adm8211_rf_write_syn_max2820(dev, 0x3,
671 (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
672 break;
673
674 case ADM8211_AL2210L:
675 adm8211_rf_write_syn_al2210l(dev, 0x0,
676 (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
677 break;
678
679 default:
680 wiphy_debug(dev->wiphy, "unsupported transceiver type %d\n",
681 priv->transceiver_type);
682 break;
683 }
684
685 /* write BBP regs */
686 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
687
688 /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
689 /* TODO: remove if SMC 2635W doesn't need this */
690 if (priv->transceiver_type == ADM8211_RFMD2948) {
691 reg = ADM8211_CSR_READ(GPIO);
692 reg &= 0xfffc0000;
693 reg |= ADM8211_CSR_GPIO_EN0;
694 if (chan != 14)
695 reg |= ADM8211_CSR_GPIO_O0;
696 ADM8211_CSR_WRITE(GPIO, reg);
697 }
698
699 if (priv->transceiver_type == ADM8211_RFMD2958) {
700 /* set PCNT2 */
701 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
702 /* set PCNT1 P_DESIRED/MID_BIAS */
703 reg = le16_to_cpu(priv->eeprom->cr49);
704 reg >>= 13;
705 reg <<= 15;
706 reg |= ant_power << 9;
707 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
708 /* set TXRX TX_GAIN */
709 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
710 (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0));
711 } else {
712 reg = ADM8211_CSR_READ(PLCPHD);
713 reg &= 0xff00ffff;
714 reg |= tx_power << 18;
715 ADM8211_CSR_WRITE(PLCPHD, reg);
716 }
717
718 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
719 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
720 ADM8211_CSR_READ(SYNRF);
721 msleep(30);
722
723 /* RF3000 BBP */
724 if (priv->transceiver_type != ADM8211_RFMD2958)
725 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
726 tx_power<<2);
727 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
728 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
729 adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ?
730 priv->eeprom->cr28 : 0);
731 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
732
733 ADM8211_CSR_WRITE(SYNRF, 0);
734
735 /* Nothing to do for ADMtek BBP */
736 } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
737 wiphy_debug(dev->wiphy, "unsupported BBP type %d\n",
738 priv->bbp_type);
739
740 ADM8211_RESTORE();
741
742 /* update current channel for adhoc (and maybe AP mode) */
743 reg = ADM8211_CSR_READ(CAP0);
744 reg &= ~0xF;
745 reg |= chan;
746 ADM8211_CSR_WRITE(CAP0, reg);
747
748 return 0;
749}
750
751static void adm8211_update_mode(struct ieee80211_hw *dev)
752{
753 struct adm8211_priv *priv = dev->priv;
754
755 ADM8211_IDLE();
756
757 priv->soft_rx_crc = 0;
758 switch (priv->mode) {
759 case NL80211_IFTYPE_STATION:
760 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
761 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
762 break;
763 case NL80211_IFTYPE_ADHOC:
764 priv->nar &= ~ADM8211_NAR_PR;
765 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
766
767 /* don't trust the error bits on rev 0x20 and up in adhoc */
768 if (priv->pdev->revision >= ADM8211_REV_BA)
769 priv->soft_rx_crc = 1;
770 break;
771 case NL80211_IFTYPE_MONITOR:
772 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
773 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
774 break;
775 }
776
777 ADM8211_RESTORE();
778}
779
780static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
781{
782 struct adm8211_priv *priv = dev->priv;
783
784 switch (priv->transceiver_type) {
785 case ADM8211_RFMD2958:
786 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
787 /* comments taken from ADMtek vendor driver */
788
789 /* Reset RF2958 after power on */
790 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
791 /* Initialize RF VCO Core Bias to maximum */
792 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
793 /* Initialize IF PLL */
794 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
795 /* Initialize IF PLL Coarse Tuning */
796 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
797 /* Initialize RF PLL */
798 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
799 /* Initialize RF PLL Coarse Tuning */
800 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
801 /* Initialize TX gain and filter BW (R9) */
802 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
803 (priv->transceiver_type == ADM8211_RFMD2958 ?
804 0x10050 : 0x00050));
805 /* Initialize CAL register */
806 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
807 break;
808
809 case ADM8211_MAX2820:
810 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
811 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
812 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
813 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
814 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
815 break;
816
817 case ADM8211_AL2210L:
818 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
819 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
820 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
821 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
822 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
823 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
824 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
825 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
826 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
827 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
828 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
829 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
830 break;
831
832 case ADM8211_RFMD2948:
833 default:
834 break;
835 }
836}
837
838static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
839{
840 struct adm8211_priv *priv = dev->priv;
841 u32 reg;
842
843 /* write addresses */
844 if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
845 ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A);
846 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
847 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
848 } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
849 priv->bbp_type == ADM8211_TYPE_ADMTEK) {
850 /* check specific BBP type */
851 switch (priv->specific_bbptype) {
852 case ADM8211_BBP_RFMD3000:
853 case ADM8211_BBP_RFMD3002:
854 ADM8211_CSR_WRITE(MMIWA, 0x00009101);
855 ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
856 break;
857
858 case ADM8211_BBP_ADM8011:
859 ADM8211_CSR_WRITE(MMIWA, 0x00008903);
860 ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
861
862 reg = ADM8211_CSR_READ(BBPCTL);
863 reg &= ~ADM8211_BBPCTL_TYPE;
864 reg |= 0x5 << 18;
865 ADM8211_CSR_WRITE(BBPCTL, reg);
866 break;
867 }
868
869 switch (priv->pdev->revision) {
870 case ADM8211_REV_CA:
871 if (priv->transceiver_type == ADM8211_RFMD2958 ||
872 priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
873 priv->transceiver_type == ADM8211_RFMD2948)
874 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
875 else if (priv->transceiver_type == ADM8211_MAX2820 ||
876 priv->transceiver_type == ADM8211_AL2210L)
877 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
878 break;
879
880 case ADM8211_REV_BA:
881 reg = ADM8211_CSR_READ(MMIRD1);
882 reg &= 0x0000FFFF;
883 reg |= 0x7e100000;
884 ADM8211_CSR_WRITE(MMIRD1, reg);
885 break;
886
887 case ADM8211_REV_AB:
888 case ADM8211_REV_AF:
889 default:
890 ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
891 break;
892 }
893
894 /* For RFMD */
895 ADM8211_CSR_WRITE(MACTEST, 0x800);
896 }
897
898 adm8211_hw_init_syn(dev);
899
900 /* Set RF Power control IF pin to PE1+PHYRST# */
901 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
902 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
903 ADM8211_CSR_READ(SYNRF);
904 msleep(20);
905
906 /* write BBP regs */
907 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
908 /* RF3000 BBP */
909 /* another set:
910 * 11: c8
911 * 14: 14
912 * 15: 50 (chan 1..13; chan 14: d0)
913 * 1c: 00
914 * 1d: 84
915 */
916 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
917 /* antenna selection: diversity */
918 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
919 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
920 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
921 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
922
923 if (priv->eeprom->major_version < 2) {
924 adm8211_write_bbp(dev, 0x1c, 0x00);
925 adm8211_write_bbp(dev, 0x1d, 0x80);
926 } else {
927 if (priv->pdev->revision == ADM8211_REV_BA)
928 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
929 else
930 adm8211_write_bbp(dev, 0x1c, 0x00);
931
932 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
933 }
934 } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
935 /* reset baseband */
936 adm8211_write_bbp(dev, 0x00, 0xFF);
937 /* antenna selection: diversity */
938 adm8211_write_bbp(dev, 0x07, 0x0A);
939
940 /* TODO: find documentation for this */
941 switch (priv->transceiver_type) {
942 case ADM8211_RFMD2958:
943 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
944 adm8211_write_bbp(dev, 0x00, 0x00);
945 adm8211_write_bbp(dev, 0x01, 0x00);
946 adm8211_write_bbp(dev, 0x02, 0x00);
947 adm8211_write_bbp(dev, 0x03, 0x00);
948 adm8211_write_bbp(dev, 0x06, 0x0f);
949 adm8211_write_bbp(dev, 0x09, 0x00);
950 adm8211_write_bbp(dev, 0x0a, 0x00);
951 adm8211_write_bbp(dev, 0x0b, 0x00);
952 adm8211_write_bbp(dev, 0x0c, 0x00);
953 adm8211_write_bbp(dev, 0x0f, 0xAA);
954 adm8211_write_bbp(dev, 0x10, 0x8c);
955 adm8211_write_bbp(dev, 0x11, 0x43);
956 adm8211_write_bbp(dev, 0x18, 0x40);
957 adm8211_write_bbp(dev, 0x20, 0x23);
958 adm8211_write_bbp(dev, 0x21, 0x02);
959 adm8211_write_bbp(dev, 0x22, 0x28);
960 adm8211_write_bbp(dev, 0x23, 0x30);
961 adm8211_write_bbp(dev, 0x24, 0x2d);
962 adm8211_write_bbp(dev, 0x28, 0x35);
963 adm8211_write_bbp(dev, 0x2a, 0x8c);
964 adm8211_write_bbp(dev, 0x2b, 0x81);
965 adm8211_write_bbp(dev, 0x2c, 0x44);
966 adm8211_write_bbp(dev, 0x2d, 0x0A);
967 adm8211_write_bbp(dev, 0x29, 0x40);
968 adm8211_write_bbp(dev, 0x60, 0x08);
969 adm8211_write_bbp(dev, 0x64, 0x01);
970 break;
971
972 case ADM8211_MAX2820:
973 adm8211_write_bbp(dev, 0x00, 0x00);
974 adm8211_write_bbp(dev, 0x01, 0x00);
975 adm8211_write_bbp(dev, 0x02, 0x00);
976 adm8211_write_bbp(dev, 0x03, 0x00);
977 adm8211_write_bbp(dev, 0x06, 0x0f);
978 adm8211_write_bbp(dev, 0x09, 0x05);
979 adm8211_write_bbp(dev, 0x0a, 0x02);
980 adm8211_write_bbp(dev, 0x0b, 0x00);
981 adm8211_write_bbp(dev, 0x0c, 0x0f);
982 adm8211_write_bbp(dev, 0x0f, 0x55);
983 adm8211_write_bbp(dev, 0x10, 0x8d);
984 adm8211_write_bbp(dev, 0x11, 0x43);
985 adm8211_write_bbp(dev, 0x18, 0x4a);
986 adm8211_write_bbp(dev, 0x20, 0x20);
987 adm8211_write_bbp(dev, 0x21, 0x02);
988 adm8211_write_bbp(dev, 0x22, 0x23);
989 adm8211_write_bbp(dev, 0x23, 0x30);
990 adm8211_write_bbp(dev, 0x24, 0x2d);
991 adm8211_write_bbp(dev, 0x2a, 0x8c);
992 adm8211_write_bbp(dev, 0x2b, 0x81);
993 adm8211_write_bbp(dev, 0x2c, 0x44);
994 adm8211_write_bbp(dev, 0x29, 0x4a);
995 adm8211_write_bbp(dev, 0x60, 0x2b);
996 adm8211_write_bbp(dev, 0x64, 0x01);
997 break;
998
999 case ADM8211_AL2210L:
1000 adm8211_write_bbp(dev, 0x00, 0x00);
1001 adm8211_write_bbp(dev, 0x01, 0x00);
1002 adm8211_write_bbp(dev, 0x02, 0x00);
1003 adm8211_write_bbp(dev, 0x03, 0x00);
1004 adm8211_write_bbp(dev, 0x06, 0x0f);
1005 adm8211_write_bbp(dev, 0x07, 0x05);
1006 adm8211_write_bbp(dev, 0x08, 0x03);
1007 adm8211_write_bbp(dev, 0x09, 0x00);
1008 adm8211_write_bbp(dev, 0x0a, 0x00);
1009 adm8211_write_bbp(dev, 0x0b, 0x00);
1010 adm8211_write_bbp(dev, 0x0c, 0x10);
1011 adm8211_write_bbp(dev, 0x0f, 0x55);
1012 adm8211_write_bbp(dev, 0x10, 0x8d);
1013 adm8211_write_bbp(dev, 0x11, 0x43);
1014 adm8211_write_bbp(dev, 0x18, 0x4a);
1015 adm8211_write_bbp(dev, 0x20, 0x20);
1016 adm8211_write_bbp(dev, 0x21, 0x02);
1017 adm8211_write_bbp(dev, 0x22, 0x23);
1018 adm8211_write_bbp(dev, 0x23, 0x30);
1019 adm8211_write_bbp(dev, 0x24, 0x2d);
1020 adm8211_write_bbp(dev, 0x2a, 0xaa);
1021 adm8211_write_bbp(dev, 0x2b, 0x81);
1022 adm8211_write_bbp(dev, 0x2c, 0x44);
1023 adm8211_write_bbp(dev, 0x29, 0xfa);
1024 adm8211_write_bbp(dev, 0x60, 0x2d);
1025 adm8211_write_bbp(dev, 0x64, 0x01);
1026 break;
1027
1028 case ADM8211_RFMD2948:
1029 break;
1030
1031 default:
1032 wiphy_debug(dev->wiphy, "unsupported transceiver %d\n",
1033 priv->transceiver_type);
1034 break;
1035 }
1036 } else
1037 wiphy_debug(dev->wiphy, "unsupported BBP %d\n", priv->bbp_type);
1038
1039 ADM8211_CSR_WRITE(SYNRF, 0);
1040
1041 /* Set RF CAL control source to MAC control */
1042 reg = ADM8211_CSR_READ(SYNCTL);
1043 reg |= ADM8211_SYNCTL_SELCAL;
1044 ADM8211_CSR_WRITE(SYNCTL, reg);
1045
1046 return 0;
1047}
1048
1049/* configures hw beacons/probe responses */
1050static int adm8211_set_rate(struct ieee80211_hw *dev)
1051{
1052 struct adm8211_priv *priv = dev->priv;
1053 u32 reg;
1054 int i = 0;
1055 u8 rate_buf[12] = {0};
1056
1057 /* write supported rates */
1058 if (priv->pdev->revision != ADM8211_REV_BA) {
1059 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1060 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1061 rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80;
1062 } else {
1063 /* workaround for rev BA specific bug */
1064 rate_buf[0] = 0x04;
1065 rate_buf[1] = 0x82;
1066 rate_buf[2] = 0x04;
1067 rate_buf[3] = 0x0b;
1068 rate_buf[4] = 0x16;
1069 }
1070
1071 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1072 ARRAY_SIZE(adm8211_rates) + 1);
1073
1074 reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1075 reg |= 1 << 15; /* short preamble */
1076 reg |= 110 << 24;
1077 ADM8211_CSR_WRITE(PLCPHD, reg);
1078
1079 /* MTMLT = 512 TU (max TX MSDU lifetime)
1080 * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1081 * SRTYLIM = 224 (short retry limit, TX header value is default) */
1082 ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1083
1084 return 0;
1085}
1086
1087static void adm8211_hw_init(struct ieee80211_hw *dev)
1088{
1089 struct adm8211_priv *priv = dev->priv;
1090 u32 reg;
1091 u8 cline;
1092
1093 reg = ADM8211_CSR_READ(PAR);
1094 reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1095 reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1096
1097 if (!pci_set_mwi(priv->pdev)) {
1098 reg |= 0x1 << 24;
1099 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1100
1101 switch (cline) {
1102 case 0x8:
1103 reg |= (0x1 << 14);
1104 break;
1105 case 0x10:
1106 reg |= (0x2 << 14);
1107 break;
1108 case 0x20:
1109 reg |= (0x3 << 14);
1110 break;
1111 default:
1112 reg |= (0x0 << 14);
1113 break;
1114 }
1115 }
1116
1117 ADM8211_CSR_WRITE(PAR, reg);
1118
1119 reg = ADM8211_CSR_READ(CSR_TEST1);
1120 reg &= ~(0xF << 28);
1121 reg |= (1 << 28) | (1 << 31);
1122 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1123
1124 /* lose link after 4 lost beacons */
1125 reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1126 ADM8211_CSR_WRITE(WCSR, reg);
1127
1128 /* Disable APM, enable receive FIFO threshold, and set drain receive
1129 * threshold to store-and-forward */
1130 reg = ADM8211_CSR_READ(CMDR);
1131 reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1132 reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1133 ADM8211_CSR_WRITE(CMDR, reg);
1134
1135 adm8211_set_rate(dev);
1136
1137 /* 4-bit values:
1138 * PWR1UP = 8 * 2 ms
1139 * PWR0PAPE = 8 us or 5 us
1140 * PWR1PAPE = 1 us or 3 us
1141 * PWR0TRSW = 5 us
1142 * PWR1TRSW = 12 us
1143 * PWR0PE2 = 13 us
1144 * PWR1PE2 = 1 us
1145 * PWR0TXPE = 8 or 6 */
1146 if (priv->pdev->revision < ADM8211_REV_CA)
1147 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1148 else
1149 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1150
1151 /* Enable store and forward for transmit */
1152 priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1153 ADM8211_CSR_WRITE(NAR, priv->nar);
1154
1155 /* Reset RF */
1156 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1157 ADM8211_CSR_READ(SYNRF);
1158 msleep(10);
1159 ADM8211_CSR_WRITE(SYNRF, 0);
1160 ADM8211_CSR_READ(SYNRF);
1161 msleep(5);
1162
1163 /* Set CFP Max Duration to 0x10 TU */
1164 reg = ADM8211_CSR_READ(CFPP);
1165 reg &= ~(0xffff << 8);
1166 reg |= 0x0010 << 8;
1167 ADM8211_CSR_WRITE(CFPP, reg);
1168
1169 /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1170 * TUCNT = 0x3ff - Tu counter 1024 us */
1171 ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1172
1173 /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1174 * DIFS=50 us, EIFS=100 us */
1175 if (priv->pdev->revision < ADM8211_REV_CA)
1176 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1177 (50 << 9) | 100);
1178 else
1179 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1180 (50 << 9) | 100);
1181
1182 /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1183 * RMRD = 2346 * 8 + 1 us (max RX duration) */
1184 ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1185
1186 /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1187 ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1188
1189 /* Initialize BBP (and SYN) */
1190 adm8211_hw_init_bbp(dev);
1191
1192 /* make sure interrupts are off */
1193 ADM8211_CSR_WRITE(IER, 0);
1194
1195 /* ACK interrupts */
1196 ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1197
1198 /* Setup WEP (turns it off for now) */
1199 reg = ADM8211_CSR_READ(MACTEST);
1200 reg &= ~(7 << 20);
1201 ADM8211_CSR_WRITE(MACTEST, reg);
1202
1203 reg = ADM8211_CSR_READ(WEPCTL);
1204 reg &= ~ADM8211_WEPCTL_WEPENABLE;
1205 reg |= ADM8211_WEPCTL_WEPRXBYP;
1206 ADM8211_CSR_WRITE(WEPCTL, reg);
1207
1208 /* Clear the missed-packet counter. */
1209 ADM8211_CSR_READ(LPC);
1210}
1211
1212static int adm8211_hw_reset(struct ieee80211_hw *dev)
1213{
1214 struct adm8211_priv *priv = dev->priv;
1215 u32 reg, tmp;
1216 int timeout = 100;
1217
1218 /* Power-on issue */
1219 /* TODO: check if this is necessary */
1220 ADM8211_CSR_WRITE(FRCTL, 0);
1221
1222 /* Reset the chip */
1223 tmp = ADM8211_CSR_READ(PAR);
1224 ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1225
1226 while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1227 msleep(50);
1228
1229 if (timeout <= 0)
1230 return -ETIMEDOUT;
1231
1232 ADM8211_CSR_WRITE(PAR, tmp);
1233
1234 if (priv->pdev->revision == ADM8211_REV_BA &&
1235 (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1236 priv->transceiver_type == ADM8211_RFMD2958)) {
1237 reg = ADM8211_CSR_READ(CSR_TEST1);
1238 reg |= (1 << 4) | (1 << 5);
1239 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1240 } else if (priv->pdev->revision == ADM8211_REV_CA) {
1241 reg = ADM8211_CSR_READ(CSR_TEST1);
1242 reg &= ~((1 << 4) | (1 << 5));
1243 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1244 }
1245
1246 ADM8211_CSR_WRITE(FRCTL, 0);
1247
1248 reg = ADM8211_CSR_READ(CSR_TEST0);
1249 reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1250 ADM8211_CSR_WRITE(CSR_TEST0, reg);
1251
1252 adm8211_clear_sram(dev);
1253
1254 return 0;
1255}
1256
1257static u64 adm8211_get_tsft(struct ieee80211_hw *dev,
1258 struct ieee80211_vif *vif)
1259{
1260 struct adm8211_priv *priv = dev->priv;
1261 u32 tsftl;
1262 u64 tsft;
1263
1264 tsftl = ADM8211_CSR_READ(TSFTL);
1265 tsft = ADM8211_CSR_READ(TSFTH);
1266 tsft <<= 32;
1267 tsft |= tsftl;
1268
1269 return tsft;
1270}
1271
1272static void adm8211_set_interval(struct ieee80211_hw *dev,
1273 unsigned short bi, unsigned short li)
1274{
1275 struct adm8211_priv *priv = dev->priv;
1276 u32 reg;
1277
1278 /* BP (beacon interval) = data->beacon_interval
1279 * LI (listen interval) = data->listen_interval (in beacon intervals) */
1280 reg = (bi << 16) | li;
1281 ADM8211_CSR_WRITE(BPLI, reg);
1282}
1283
1284static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
1285{
1286 struct adm8211_priv *priv = dev->priv;
1287 u32 reg;
1288
1289 ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
1290 reg = ADM8211_CSR_READ(ABDA1);
1291 reg &= 0x0000ffff;
1292 reg |= (bssid[4] << 16) | (bssid[5] << 24);
1293 ADM8211_CSR_WRITE(ABDA1, reg);
1294}
1295
1296static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
1297{
1298 struct adm8211_priv *priv = dev->priv;
1299 struct ieee80211_conf *conf = &dev->conf;
1300 int channel =
1301 ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
1302
1303 if (channel != priv->channel) {
1304 priv->channel = channel;
1305 adm8211_rf_set_channel(dev, priv->channel);
1306 }
1307
1308 return 0;
1309}
1310
1311static void adm8211_bss_info_changed(struct ieee80211_hw *dev,
1312 struct ieee80211_vif *vif,
1313 struct ieee80211_bss_conf *conf,
1314 u64 changes)
1315{
1316 struct adm8211_priv *priv = dev->priv;
1317
1318 if (!(changes & BSS_CHANGED_BSSID))
1319 return;
1320
1321 if (!ether_addr_equal(conf->bssid, priv->bssid)) {
1322 adm8211_set_bssid(dev, conf->bssid);
1323 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1324 }
1325}
1326
1327static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw,
1328 struct netdev_hw_addr_list *mc_list)
1329{
1330 unsigned int bit_nr;
1331 u32 mc_filter[2];
1332 struct netdev_hw_addr *ha;
1333
1334 mc_filter[1] = mc_filter[0] = 0;
1335
1336 netdev_hw_addr_list_for_each(ha, mc_list) {
1337 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1338
1339 bit_nr &= 0x3F;
1340 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1341 }
1342
1343 return mc_filter[0] | ((u64)(mc_filter[1]) << 32);
1344}
1345
1346static void adm8211_configure_filter(struct ieee80211_hw *dev,
1347 unsigned int changed_flags,
1348 unsigned int *total_flags,
1349 u64 multicast)
1350{
1351 static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1352 struct adm8211_priv *priv = dev->priv;
1353 unsigned int new_flags;
1354 u32 mc_filter[2];
1355
1356 mc_filter[0] = multicast;
1357 mc_filter[1] = multicast >> 32;
1358
1359 new_flags = 0;
1360
1361 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 ieee80211_hw_set(dev, RX_INCLUDES_FCS);
1378 else
1379 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, dev->flags);
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 = dma_map_single(&priv->pdev->dev,
1451 skb_tail_pointer(rx_info->skb),
1452 RX_PKT_SIZE,
1453 DMA_FROM_DEVICE);
1454 if (dma_mapping_error(&priv->pdev->dev, rx_info->mapping)) {
1455 dev_kfree_skb(rx_info->skb);
1456 rx_info->skb = NULL;
1457 break;
1458 }
1459
1460 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1461 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1462 }
1463
1464 /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1465 for (i = 0; i < priv->tx_ring_size; i++) {
1466 desc = &priv->tx_ring[i];
1467 tx_info = &priv->tx_buffers[i];
1468
1469 tx_info->skb = NULL;
1470 tx_info->mapping = 0;
1471 desc->status = 0;
1472 }
1473 desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1474
1475 priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1476 ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1477 ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1478
1479 return 0;
1480}
1481
1482static void adm8211_free_rings(struct ieee80211_hw *dev)
1483{
1484 struct adm8211_priv *priv = dev->priv;
1485 unsigned int i;
1486
1487 for (i = 0; i < priv->rx_ring_size; i++) {
1488 if (!priv->rx_buffers[i].skb)
1489 continue;
1490
1491 dma_unmap_single(&priv->pdev->dev,
1492 priv->rx_buffers[i].mapping, RX_PKT_SIZE,
1493 DMA_FROM_DEVICE);
1494
1495 dev_kfree_skb(priv->rx_buffers[i].skb);
1496 }
1497
1498 for (i = 0; i < priv->tx_ring_size; i++) {
1499 if (!priv->tx_buffers[i].skb)
1500 continue;
1501
1502 dma_unmap_single(&priv->pdev->dev,
1503 priv->tx_buffers[i].mapping,
1504 priv->tx_buffers[i].skb->len, DMA_TO_DEVICE);
1505
1506 dev_kfree_skb(priv->tx_buffers[i].skb);
1507 }
1508}
1509
1510static int adm8211_start(struct ieee80211_hw *dev)
1511{
1512 struct adm8211_priv *priv = dev->priv;
1513 int retval;
1514
1515 /* Power up MAC and RF chips */
1516 retval = adm8211_hw_reset(dev);
1517 if (retval) {
1518 wiphy_err(dev->wiphy, "hardware reset failed\n");
1519 goto fail;
1520 }
1521
1522 retval = adm8211_init_rings(dev);
1523 if (retval) {
1524 wiphy_err(dev->wiphy, "failed to initialize rings\n");
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 wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
1536 goto fail;
1537 }
1538
1539 ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1540 ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1541 ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1542 priv->mode = NL80211_IFTYPE_MONITOR;
1543 adm8211_update_mode(dev);
1544 ADM8211_CSR_WRITE(RDR, 0);
1545
1546 adm8211_set_interval(dev, 100, 10);
1547 return 0;
1548
1549fail:
1550 return retval;
1551}
1552
1553static void adm8211_stop(struct ieee80211_hw *dev)
1554{
1555 struct adm8211_priv *priv = dev->priv;
1556
1557 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1558 priv->nar = 0;
1559 ADM8211_CSR_WRITE(NAR, 0);
1560 ADM8211_CSR_WRITE(IER, 0);
1561 ADM8211_CSR_READ(NAR);
1562
1563 free_irq(priv->pdev->irq, dev);
1564
1565 adm8211_free_rings(dev);
1566}
1567
1568static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
1569 int plcp_signal, int short_preamble)
1570{
1571 /* Alternative calculation from NetBSD: */
1572
1573/* IEEE 802.11b durations for DSSS PHY in microseconds */
1574#define IEEE80211_DUR_DS_LONG_PREAMBLE 144
1575#define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
1576#define IEEE80211_DUR_DS_FAST_PLCPHDR 24
1577#define IEEE80211_DUR_DS_SLOW_PLCPHDR 48
1578#define IEEE80211_DUR_DS_SLOW_ACK 112
1579#define IEEE80211_DUR_DS_FAST_ACK 56
1580#define IEEE80211_DUR_DS_SLOW_CTS 112
1581#define IEEE80211_DUR_DS_FAST_CTS 56
1582#define IEEE80211_DUR_DS_SLOT 20
1583#define IEEE80211_DUR_DS_SIFS 10
1584
1585 int remainder;
1586
1587 *dur = (80 * (24 + payload_len) + plcp_signal - 1)
1588 / plcp_signal;
1589
1590 if (plcp_signal <= PLCP_SIGNAL_2M)
1591 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
1592 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1593 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1594 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1595 IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
1596 else
1597 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
1598 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1599 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1600 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1601 IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
1602
1603 /* lengthen duration if long preamble */
1604 if (!short_preamble)
1605 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
1606 IEEE80211_DUR_DS_SHORT_PREAMBLE) +
1607 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
1608 IEEE80211_DUR_DS_FAST_PLCPHDR);
1609
1610
1611 *plcp = (80 * len) / plcp_signal;
1612 remainder = (80 * len) % plcp_signal;
1613 if (plcp_signal == PLCP_SIGNAL_11M &&
1614 remainder <= 30 && remainder > 0)
1615 *plcp = (*plcp | 0x8000) + 1;
1616 else if (remainder)
1617 (*plcp)++;
1618}
1619
1620/* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
1621static int adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1622 u16 plcp_signal,
1623 size_t hdrlen)
1624{
1625 struct adm8211_priv *priv = dev->priv;
1626 unsigned long flags;
1627 dma_addr_t mapping;
1628 unsigned int entry;
1629 u32 flag;
1630
1631 mapping = dma_map_single(&priv->pdev->dev, skb->data, skb->len,
1632 DMA_TO_DEVICE);
1633 if (dma_mapping_error(&priv->pdev->dev, mapping))
1634 return -ENOMEM;
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 priv->tx_buffers[entry].hdrlen = hdrlen;
1651 priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
1652
1653 if (entry == priv->tx_ring_size - 1)
1654 flag |= TDES1_CONTROL_TER;
1655 priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
1656
1657 /* Set TX rate (SIGNAL field in PLCP PPDU format) */
1658 flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
1659 priv->tx_ring[entry].status = cpu_to_le32(flag);
1660
1661 priv->cur_tx++;
1662
1663 spin_unlock_irqrestore(&priv->lock, flags);
1664
1665 /* Trigger transmit poll */
1666 ADM8211_CSR_WRITE(TDR, 0);
1667
1668 return 0;
1669}
1670
1671/* Put adm8211_tx_hdr on skb and transmit */
1672static void adm8211_tx(struct ieee80211_hw *dev,
1673 struct ieee80211_tx_control *control,
1674 struct sk_buff *skb)
1675{
1676 struct adm8211_tx_hdr *txhdr;
1677 size_t payload_len, hdrlen;
1678 int plcp, dur, len, plcp_signal, short_preamble;
1679 struct ieee80211_hdr *hdr;
1680 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1681 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
1682 u8 rc_flags;
1683
1684 rc_flags = info->control.rates[0].flags;
1685 short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
1686 plcp_signal = txrate->bitrate;
1687
1688 hdr = (struct ieee80211_hdr *)skb->data;
1689 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1690 memcpy(skb->cb, skb->data, hdrlen);
1691 hdr = (struct ieee80211_hdr *)skb->cb;
1692 skb_pull(skb, hdrlen);
1693 payload_len = skb->len;
1694
1695 txhdr = skb_push(skb, sizeof(*txhdr));
1696 memset(txhdr, 0, sizeof(*txhdr));
1697 memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
1698 txhdr->signal = plcp_signal;
1699 txhdr->frame_body_size = cpu_to_le16(payload_len);
1700 txhdr->frame_control = hdr->frame_control;
1701
1702 len = hdrlen + payload_len + FCS_LEN;
1703
1704 txhdr->frag = cpu_to_le16(0x0FFF);
1705 adm8211_calc_durations(&dur, &plcp, payload_len,
1706 len, plcp_signal, short_preamble);
1707 txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1708 txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1709 txhdr->dur_frag_head = cpu_to_le16(dur);
1710 txhdr->dur_frag_tail = cpu_to_le16(dur);
1711
1712 txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1713
1714 if (short_preamble)
1715 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1716
1717 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1718 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1719
1720 txhdr->retry_limit = info->control.rates[0].count;
1721
1722 if (adm8211_tx_raw(dev, skb, plcp_signal, hdrlen)) {
1723 /* Drop packet */
1724 ieee80211_free_txskb(dev, skb);
1725 }
1726}
1727
1728static int adm8211_alloc_rings(struct ieee80211_hw *dev)
1729{
1730 struct adm8211_priv *priv = dev->priv;
1731 unsigned int ring_size;
1732
1733 priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
1734 sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
1735 if (!priv->rx_buffers)
1736 return -ENOMEM;
1737
1738 priv->tx_buffers = (void *)priv->rx_buffers +
1739 sizeof(*priv->rx_buffers) * priv->rx_ring_size;
1740
1741 /* Allocate TX/RX descriptors */
1742 ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
1743 sizeof(struct adm8211_desc) * priv->tx_ring_size;
1744 priv->rx_ring = dma_alloc_coherent(&priv->pdev->dev, ring_size,
1745 &priv->rx_ring_dma, GFP_KERNEL);
1746
1747 if (!priv->rx_ring) {
1748 kfree(priv->rx_buffers);
1749 priv->rx_buffers = NULL;
1750 priv->tx_buffers = NULL;
1751 return -ENOMEM;
1752 }
1753
1754 priv->tx_ring = priv->rx_ring + priv->rx_ring_size;
1755 priv->tx_ring_dma = priv->rx_ring_dma +
1756 sizeof(struct adm8211_desc) * priv->rx_ring_size;
1757
1758 return 0;
1759}
1760
1761static const struct ieee80211_ops adm8211_ops = {
1762 .tx = adm8211_tx,
1763 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
1764 .start = adm8211_start,
1765 .stop = adm8211_stop,
1766 .add_interface = adm8211_add_interface,
1767 .remove_interface = adm8211_remove_interface,
1768 .config = adm8211_config,
1769 .bss_info_changed = adm8211_bss_info_changed,
1770 .prepare_multicast = adm8211_prepare_multicast,
1771 .configure_filter = adm8211_configure_filter,
1772 .get_stats = adm8211_get_stats,
1773 .get_tsf = adm8211_get_tsft
1774};
1775
1776static int adm8211_probe(struct pci_dev *pdev,
1777 const struct pci_device_id *id)
1778{
1779 struct ieee80211_hw *dev;
1780 struct adm8211_priv *priv;
1781 unsigned long mem_len;
1782 unsigned int io_len;
1783 int err;
1784 u32 reg;
1785 u8 perm_addr[ETH_ALEN];
1786
1787 err = pci_enable_device(pdev);
1788 if (err) {
1789 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1790 pci_name(pdev));
1791 return err;
1792 }
1793
1794 io_len = pci_resource_len(pdev, 0);
1795 mem_len = pci_resource_len(pdev, 1);
1796 if (io_len < 256 || mem_len < 1024) {
1797 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1798 pci_name(pdev));
1799 err = -ENOMEM;
1800 goto err_disable_pdev;
1801 }
1802
1803
1804 /* check signature */
1805 pci_read_config_dword(pdev, 0x80 /* CR32 */, ®);
1806 if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1807 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1808 pci_name(pdev), reg);
1809 err = -EINVAL;
1810 goto err_disable_pdev;
1811 }
1812
1813 err = pci_request_regions(pdev, "adm8211");
1814 if (err) {
1815 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1816 pci_name(pdev));
1817 return err; /* someone else grabbed it? don't disable it */
1818 }
1819
1820 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1821 if (err) {
1822 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1823 pci_name(pdev));
1824 goto err_free_reg;
1825 }
1826
1827 pci_set_master(pdev);
1828
1829 dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1830 if (!dev) {
1831 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1832 pci_name(pdev));
1833 err = -ENOMEM;
1834 goto err_free_reg;
1835 }
1836 priv = dev->priv;
1837 priv->pdev = pdev;
1838
1839 spin_lock_init(&priv->lock);
1840
1841 SET_IEEE80211_DEV(dev, &pdev->dev);
1842
1843 pci_set_drvdata(pdev, dev);
1844
1845 priv->map = pci_iomap(pdev, 1, mem_len);
1846 if (!priv->map)
1847 priv->map = pci_iomap(pdev, 0, io_len);
1848
1849 if (!priv->map) {
1850 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1851 pci_name(pdev));
1852 err = -ENOMEM;
1853 goto err_free_dev;
1854 }
1855
1856 priv->rx_ring_size = rx_ring_size;
1857 priv->tx_ring_size = tx_ring_size;
1858
1859 err = adm8211_alloc_rings(dev);
1860 if (err) {
1861 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1862 pci_name(pdev));
1863 goto err_iounmap;
1864 }
1865
1866 *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0));
1867 *(__le16 *)&perm_addr[4] =
1868 cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF);
1869
1870 if (!is_valid_ether_addr(perm_addr)) {
1871 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1872 pci_name(pdev));
1873 eth_random_addr(perm_addr);
1874 }
1875 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1876
1877 dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1878 /* dev->flags = RX_INCLUDES_FCS in promisc mode */
1879 ieee80211_hw_set(dev, SIGNAL_UNSPEC);
1880 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1881
1882 dev->max_signal = 100; /* FIXME: find better value */
1883
1884 dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1885
1886 priv->retry_limit = 3;
1887 priv->ant_power = 0x40;
1888 priv->tx_power = 0x40;
1889 priv->lpf_cutoff = 0xFF;
1890 priv->lnags_threshold = 0xFF;
1891 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1892
1893 /* Power-on issue. EEPROM won't read correctly without */
1894 if (pdev->revision >= ADM8211_REV_BA) {
1895 ADM8211_CSR_WRITE(FRCTL, 0);
1896 ADM8211_CSR_READ(FRCTL);
1897 ADM8211_CSR_WRITE(FRCTL, 1);
1898 ADM8211_CSR_READ(FRCTL);
1899 msleep(100);
1900 }
1901
1902 err = adm8211_read_eeprom(dev);
1903 if (err) {
1904 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1905 pci_name(pdev));
1906 goto err_free_desc;
1907 }
1908
1909 priv->channel = 1;
1910
1911 dev->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
1912
1913 wiphy_ext_feature_set(dev->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1914
1915 err = ieee80211_register_hw(dev);
1916 if (err) {
1917 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1918 pci_name(pdev));
1919 goto err_free_eeprom;
1920 }
1921
1922 wiphy_info(dev->wiphy, "hwaddr %pM, Rev 0x%02x\n",
1923 dev->wiphy->perm_addr, pdev->revision);
1924
1925 return 0;
1926
1927 err_free_eeprom:
1928 kfree(priv->eeprom);
1929
1930 err_free_desc:
1931 dma_free_coherent(&pdev->dev,
1932 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1933 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1934 priv->rx_ring, priv->rx_ring_dma);
1935 kfree(priv->rx_buffers);
1936
1937 err_iounmap:
1938 pci_iounmap(pdev, priv->map);
1939
1940 err_free_dev:
1941 ieee80211_free_hw(dev);
1942
1943 err_free_reg:
1944 pci_release_regions(pdev);
1945
1946 err_disable_pdev:
1947 pci_disable_device(pdev);
1948 return err;
1949}
1950
1951
1952static void adm8211_remove(struct pci_dev *pdev)
1953{
1954 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1955 struct adm8211_priv *priv;
1956
1957 if (!dev)
1958 return;
1959
1960 ieee80211_unregister_hw(dev);
1961
1962 priv = dev->priv;
1963
1964 dma_free_coherent(&pdev->dev,
1965 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1966 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1967 priv->rx_ring, priv->rx_ring_dma);
1968
1969 kfree(priv->rx_buffers);
1970 kfree(priv->eeprom);
1971 pci_iounmap(pdev, priv->map);
1972 pci_release_regions(pdev);
1973 pci_disable_device(pdev);
1974 ieee80211_free_hw(dev);
1975}
1976
1977
1978#define adm8211_suspend NULL
1979#define adm8211_resume NULL
1980
1981MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
1982
1983static SIMPLE_DEV_PM_OPS(adm8211_pm_ops, adm8211_suspend, adm8211_resume);
1984
1985/* TODO: implement enable_wake */
1986static struct pci_driver adm8211_driver = {
1987 .name = "adm8211",
1988 .id_table = adm8211_pci_id_table,
1989 .probe = adm8211_probe,
1990 .remove = adm8211_remove,
1991 .driver.pm = &adm8211_pm_ops,
1992};
1993
1994module_pci_driver(adm8211_driver);