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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / wireless / admtek / adm8211.c
blobba326f6c121449d526806cc8295968acbc127083
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
28 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
29 MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");
30 MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
31 MODULE_SUPPORTED_DEVICE("ADM8211");
32 MODULE_LICENSE("GPL");
33
34 static unsigned int tx_ring_size __read_mostly = 16;
35 static unsigned int rx_ring_size __read_mostly = 16;
36
37 module_param(tx_ring_size, uint, 0);
38 module_param(rx_ring_size, uint, 0);
39
40 static const struct pci_device_id adm8211_pci_id_table[] = {
41 /* ADMtek ADM8211 */
42 { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
43 { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
44 { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
45 { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
46 { 0 }
47 };
48
49 static struct ieee80211_rate adm8211_rates[] = {
50 { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
51 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
52 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
53 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
54 { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */
55 };
56
57 static const struct ieee80211_channel adm8211_channels[] = {
58 { .center_freq = 2412},
59 { .center_freq = 2417},
60 { .center_freq = 2422},
61 { .center_freq = 2427},
62 { .center_freq = 2432},
63 { .center_freq = 2437},
64 { .center_freq = 2442},
65 { .center_freq = 2447},
66 { .center_freq = 2452},
67 { .center_freq = 2457},
68 { .center_freq = 2462},
69 { .center_freq = 2467},
70 { .center_freq = 2472},
71 { .center_freq = 2484},
72 };
73
74
75 static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
76 {
77 struct adm8211_priv *priv = eeprom->data;
78 u32 reg = ADM8211_CSR_READ(SPR);
79
80 eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
81 eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
82 eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
83 eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
84 }
85
86 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
87 {
88 struct adm8211_priv *priv = eeprom->data;
89 u32 reg = 0x4000 | ADM8211_SPR_SRS;
90
91 if (eeprom->reg_data_in)
92 reg |= ADM8211_SPR_SDI;
93 if (eeprom->reg_data_out)
94 reg |= ADM8211_SPR_SDO;
95 if (eeprom->reg_data_clock)
96 reg |= ADM8211_SPR_SCLK;
97 if (eeprom->reg_chip_select)
98 reg |= ADM8211_SPR_SCS;
99
100 ADM8211_CSR_WRITE(SPR, reg);
101 ADM8211_CSR_READ(SPR); /* eeprom_delay */
102 }
103
104 static int adm8211_read_eeprom(struct ieee80211_hw *dev)
105 {
106 struct adm8211_priv *priv = dev->priv;
107 unsigned int words, i;
108 struct ieee80211_chan_range chan_range;
109 u16 cr49;
110 struct eeprom_93cx6 eeprom = {
111 .data = priv,
112 .register_read = adm8211_eeprom_register_read,
113 .register_write = adm8211_eeprom_register_write
114 };
115
116 if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
117 /* 256 * 16-bit = 512 bytes */
118 eeprom.width = PCI_EEPROM_WIDTH_93C66;
119 words = 256;
120 } else {
121 /* 64 * 16-bit = 128 bytes */
122 eeprom.width = PCI_EEPROM_WIDTH_93C46;
123 words = 64;
124 }
125
126 priv->eeprom_len = words * 2;
127 priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
128 if (!priv->eeprom)
129 return -ENOMEM;
130
131 eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words);
132
133 cr49 = le16_to_cpu(priv->eeprom->cr49);
134 priv->rf_type = (cr49 >> 3) & 0x7;
135 switch (priv->rf_type) {
136 case ADM8211_TYPE_INTERSIL:
137 case ADM8211_TYPE_RFMD:
138 case ADM8211_TYPE_MARVEL:
139 case ADM8211_TYPE_AIROHA:
140 case ADM8211_TYPE_ADMTEK:
141 break;
142
143 default:
144 if (priv->pdev->revision < ADM8211_REV_CA)
145 priv->rf_type = ADM8211_TYPE_RFMD;
146 else
147 priv->rf_type = ADM8211_TYPE_AIROHA;
148
149 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
150 pci_name(priv->pdev), (cr49 >> 3) & 0x7);
151 }
152
153 priv->bbp_type = cr49 & 0x7;
154 switch (priv->bbp_type) {
155 case ADM8211_TYPE_INTERSIL:
156 case ADM8211_TYPE_RFMD:
157 case ADM8211_TYPE_MARVEL:
158 case ADM8211_TYPE_AIROHA:
159 case ADM8211_TYPE_ADMTEK:
160 break;
161 default:
162 if (priv->pdev->revision < ADM8211_REV_CA)
163 priv->bbp_type = ADM8211_TYPE_RFMD;
164 else
165 priv->bbp_type = ADM8211_TYPE_ADMTEK;
166
167 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
168 pci_name(priv->pdev), cr49 >> 3);
169 }
170
171 if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
172 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
173 pci_name(priv->pdev), priv->eeprom->country_code);
174
175 chan_range = cranges[2];
176 } else
177 chan_range = cranges[priv->eeprom->country_code];
178
179 printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
180 pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
181
182 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels));
183
184 memcpy(priv->channels, adm8211_channels, sizeof(priv->channels));
185 priv->band.channels = priv->channels;
186 priv->band.n_channels = ARRAY_SIZE(adm8211_channels);
187 priv->band.bitrates = adm8211_rates;
188 priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates);
189
190 for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
191 if (i < chan_range.min || i > chan_range.max)
192 priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED;
193
194 switch (priv->eeprom->specific_bbptype) {
195 case ADM8211_BBP_RFMD3000:
196 case ADM8211_BBP_RFMD3002:
197 case ADM8211_BBP_ADM8011:
198 priv->specific_bbptype = priv->eeprom->specific_bbptype;
199 break;
200
201 default:
202 if (priv->pdev->revision < ADM8211_REV_CA)
203 priv->specific_bbptype = ADM8211_BBP_RFMD3000;
204 else
205 priv->specific_bbptype = ADM8211_BBP_ADM8011;
206
207 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
208 pci_name(priv->pdev), priv->eeprom->specific_bbptype);
209 }
210
211 switch (priv->eeprom->specific_rftype) {
212 case ADM8211_RFMD2948:
213 case ADM8211_RFMD2958:
214 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
215 case ADM8211_MAX2820:
216 case ADM8211_AL2210L:
217 priv->transceiver_type = priv->eeprom->specific_rftype;
218 break;
219
220 default:
221 if (priv->pdev->revision == ADM8211_REV_BA)
222 priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
223 else if (priv->pdev->revision == ADM8211_REV_CA)
224 priv->transceiver_type = ADM8211_AL2210L;
225 else if (priv->pdev->revision == ADM8211_REV_AB)
226 priv->transceiver_type = ADM8211_RFMD2948;
227
228 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
229 pci_name(priv->pdev), priv->eeprom->specific_rftype);
230
231 break;
232 }
233
234 printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
235 "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
236 priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
237
238 return 0;
239 }
240
241 static inline void adm8211_write_sram(struct ieee80211_hw *dev,
242 u32 addr, u32 data)
243 {
244 struct adm8211_priv *priv = dev->priv;
245
246 ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
247 (priv->pdev->revision < ADM8211_REV_BA ?
248 0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
249 ADM8211_CSR_READ(WEPCTL);
250 msleep(1);
251
252 ADM8211_CSR_WRITE(WESK, data);
253 ADM8211_CSR_READ(WESK);
254 msleep(1);
255 }
256
257 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
258 unsigned int addr, u8 *buf,
259 unsigned int len)
260 {
261 struct adm8211_priv *priv = dev->priv;
262 u32 reg = ADM8211_CSR_READ(WEPCTL);
263 unsigned int i;
264
265 if (priv->pdev->revision < ADM8211_REV_BA) {
266 for (i = 0; i < len; i += 2) {
267 u16 val = buf[i] | (buf[i + 1] << 8);
268 adm8211_write_sram(dev, addr + i / 2, val);
269 }
270 } else {
271 for (i = 0; i < len; i += 4) {
272 u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
273 (buf[i + 2] << 16) | (buf[i + 3] << 24);
274 adm8211_write_sram(dev, addr + i / 4, val);
275 }
276 }
277
278 ADM8211_CSR_WRITE(WEPCTL, reg);
279 }
280
281 static void adm8211_clear_sram(struct ieee80211_hw *dev)
282 {
283 struct adm8211_priv *priv = dev->priv;
284 u32 reg = ADM8211_CSR_READ(WEPCTL);
285 unsigned int addr;
286
287 for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
288 adm8211_write_sram(dev, addr, 0);
289
290 ADM8211_CSR_WRITE(WEPCTL, reg);
291 }
292
293 static int adm8211_get_stats(struct ieee80211_hw *dev,
294 struct ieee80211_low_level_stats *stats)
295 {
296 struct adm8211_priv *priv = dev->priv;
297
298 memcpy(stats, &priv->stats, sizeof(*stats));
299
300 return 0;
301 }
302
303 static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
304 {
305 struct adm8211_priv *priv = dev->priv;
306 unsigned int dirty_tx;
307
308 spin_lock(&priv->lock);
309
310 for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
311 unsigned int entry = dirty_tx % priv->tx_ring_size;
312 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
313 struct ieee80211_tx_info *txi;
314 struct adm8211_tx_ring_info *info;
315 struct sk_buff *skb;
316
317 if (status & TDES0_CONTROL_OWN ||
318 !(status & TDES0_CONTROL_DONE))
319 break;
320
321 info = &priv->tx_buffers[entry];
322 skb = info->skb;
323 txi = IEEE80211_SKB_CB(skb);
324
325 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
326
327 pci_unmap_single(priv->pdev, info->mapping,
328 info->skb->len, PCI_DMA_TODEVICE);
329
330 ieee80211_tx_info_clear_status(txi);
331
332 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
333 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
334 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
335 !(status & TDES0_STATUS_ES))
336 txi->flags |= IEEE80211_TX_STAT_ACK;
337
338 ieee80211_tx_status_irqsafe(dev, skb);
339
340 info->skb = NULL;
341 }
342
343 if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
344 ieee80211_wake_queue(dev, 0);
345
346 priv->dirty_tx = dirty_tx;
347 spin_unlock(&priv->lock);
348 }
349
350
351 static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
352 {
353 struct adm8211_priv *priv = dev->priv;
354 unsigned int entry = priv->cur_rx % priv->rx_ring_size;
355 u32 status;
356 unsigned int pktlen;
357 struct sk_buff *skb, *newskb;
358 unsigned int limit = priv->rx_ring_size;
359 u8 rssi, rate;
360
361 while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
362 if (!limit--)
363 break;
364
365 status = le32_to_cpu(priv->rx_ring[entry].status);
366 rate = (status & RDES0_STATUS_RXDR) >> 12;
367 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
368 RDES1_STATUS_RSSI;
369
370 pktlen = status & RDES0_STATUS_FL;
371 if (pktlen > RX_PKT_SIZE) {
372 if (net_ratelimit())
373 wiphy_debug(dev->wiphy, "frame too long (%d)\n",
374 pktlen);
375 pktlen = RX_PKT_SIZE;
376 }
377
378 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
379 skb = NULL; /* old buffer will be reused */
380 /* TODO: update RX error stats */
381 /* TODO: check RDES0_STATUS_CRC*E */
382 } else if (pktlen < RX_COPY_BREAK) {
383 skb = dev_alloc_skb(pktlen);
384 if (skb) {
385 pci_dma_sync_single_for_cpu(
386 priv->pdev,
387 priv->rx_buffers[entry].mapping,
388 pktlen, PCI_DMA_FROMDEVICE);
389 skb_put_data(skb,
390 skb_tail_pointer(priv->rx_buffers[entry].skb),
391 pktlen);
392 pci_dma_sync_single_for_device(
393 priv->pdev,
394 priv->rx_buffers[entry].mapping,
395 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
396 }
397 } else {
398 newskb = dev_alloc_skb(RX_PKT_SIZE);
399 if (newskb) {
400 skb = priv->rx_buffers[entry].skb;
401 skb_put(skb, pktlen);
402 pci_unmap_single(
403 priv->pdev,
404 priv->rx_buffers[entry].mapping,
405 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
406 priv->rx_buffers[entry].skb = newskb;
407 priv->rx_buffers[entry].mapping =
408 pci_map_single(priv->pdev,
409 skb_tail_pointer(newskb),
410 RX_PKT_SIZE,
411 PCI_DMA_FROMDEVICE);
412 if (pci_dma_mapping_error(priv->pdev,
413 priv->rx_buffers[entry].mapping)) {
414 priv->rx_buffers[entry].skb = NULL;
415 dev_kfree_skb(newskb);
416 skb = NULL;
417 /* TODO: update rx dropped stats */
418 }
419 } else {
420 skb = NULL;
421 /* TODO: update rx dropped stats */
422 }
423
424 priv->rx_ring[entry].buffer1 =
425 cpu_to_le32(priv->rx_buffers[entry].mapping);
426 }
427
428 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
429 RDES0_STATUS_SQL);
430 priv->rx_ring[entry].length =
431 cpu_to_le32(RX_PKT_SIZE |
432 (entry == priv->rx_ring_size - 1 ?
433 RDES1_CONTROL_RER : 0));
434
435 if (skb) {
436 struct ieee80211_rx_status rx_status = {0};
437
438 if (priv->pdev->revision < ADM8211_REV_CA)
439 rx_status.signal = rssi;
440 else
441 rx_status.signal = 100 - rssi;
442
443 rx_status.rate_idx = rate;
444
445 rx_status.freq = adm8211_channels[priv->channel - 1].center_freq;
446 rx_status.band = NL80211_BAND_2GHZ;
447
448 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
449 ieee80211_rx_irqsafe(dev, skb);
450 }
451
452 entry = (++priv->cur_rx) % priv->rx_ring_size;
453 }
454
455 /* TODO: check LPC and update stats? */
456 }
457
458
459 static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
460 {
461 #define ADM8211_INT(x) \
462 do { \
463 if (unlikely(stsr & ADM8211_STSR_ ## x)) \
464 wiphy_debug(dev->wiphy, "%s\n", #x); \
465 } while (0)
466
467 struct ieee80211_hw *dev = dev_id;
468 struct adm8211_priv *priv = dev->priv;
469 u32 stsr = ADM8211_CSR_READ(STSR);
470 ADM8211_CSR_WRITE(STSR, stsr);
471 if (stsr == 0xffffffff)
472 return IRQ_HANDLED;
473
474 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
475 return IRQ_HANDLED;
476
477 if (stsr & ADM8211_STSR_RCI)
478 adm8211_interrupt_rci(dev);
479 if (stsr & ADM8211_STSR_TCI)
480 adm8211_interrupt_tci(dev);
481
482 ADM8211_INT(PCF);
483 ADM8211_INT(BCNTC);
484 ADM8211_INT(GPINT);
485 ADM8211_INT(ATIMTC);
486 ADM8211_INT(TSFTF);
487 ADM8211_INT(TSCZ);
488 ADM8211_INT(SQL);
489 ADM8211_INT(WEPTD);
490 ADM8211_INT(ATIME);
491 ADM8211_INT(TEIS);
492 ADM8211_INT(FBE);
493 ADM8211_INT(REIS);
494 ADM8211_INT(GPTT);
495 ADM8211_INT(RPS);
496 ADM8211_INT(RDU);
497 ADM8211_INT(TUF);
498 ADM8211_INT(TPS);
499
500 return IRQ_HANDLED;
501
502 #undef ADM8211_INT
503 }
504
505 #define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
506 static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \
507 u16 addr, u32 value) { \
508 struct adm8211_priv *priv = dev->priv; \
509 unsigned int i; \
510 u32 reg, bitbuf; \
511 \
512 value &= v_mask; \
513 addr &= a_mask; \
514 bitbuf = (value << v_shift) | (addr << a_shift); \
515 \
516 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \
517 ADM8211_CSR_READ(SYNRF); \
518 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \
519 ADM8211_CSR_READ(SYNRF); \
520 \
521 if (prewrite) { \
522 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \
523 ADM8211_CSR_READ(SYNRF); \
524 } \
525 \
526 for (i = 0; i <= bits; i++) { \
527 if (bitbuf & (1 << (bits - i))) \
528 reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \
529 else \
530 reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \
531 \
532 ADM8211_CSR_WRITE(SYNRF, reg); \
533 ADM8211_CSR_READ(SYNRF); \
534 \
535 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
536 ADM8211_CSR_READ(SYNRF); \
537 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
538 ADM8211_CSR_READ(SYNRF); \
539 } \
540 \
541 if (postwrite == 1) { \
542 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \
543 ADM8211_CSR_READ(SYNRF); \
544 } \
545 if (postwrite == 2) { \
546 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \
547 ADM8211_CSR_READ(SYNRF); \
548 } \
549 \
550 ADM8211_CSR_WRITE(SYNRF, 0); \
551 ADM8211_CSR_READ(SYNRF); \
552 }
553
554 WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1)
555 WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1)
556 WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
557 WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2)
558
559 #undef WRITE_SYN
560
561 static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
562 {
563 struct adm8211_priv *priv = dev->priv;
564 unsigned int timeout;
565 u32 reg;
566
567 timeout = 10;
568 while (timeout > 0) {
569 reg = ADM8211_CSR_READ(BBPCTL);
570 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
571 break;
572 timeout--;
573 msleep(2);
574 }
575
576 if (timeout == 0) {
577 wiphy_debug(dev->wiphy,
578 "adm8211_write_bbp(%d,%d) failed prewrite (reg=0x%08x)\n",
579 addr, data, reg);
580 return -ETIMEDOUT;
581 }
582
583 switch (priv->bbp_type) {
584 case ADM8211_TYPE_INTERSIL:
585 reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */
586 break;
587 case ADM8211_TYPE_RFMD:
588 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
589 (0x01 << 18);
590 break;
591 case ADM8211_TYPE_ADMTEK:
592 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
593 (0x05 << 18);
594 break;
595 }
596 reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
597
598 ADM8211_CSR_WRITE(BBPCTL, reg);
599
600 timeout = 10;
601 while (timeout > 0) {
602 reg = ADM8211_CSR_READ(BBPCTL);
603 if (!(reg & ADM8211_BBPCTL_WR))
604 break;
605 timeout--;
606 msleep(2);
607 }
608
609 if (timeout == 0) {
610 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
611 ~ADM8211_BBPCTL_WR);
612 wiphy_debug(dev->wiphy,
613 "adm8211_write_bbp(%d,%d) failed postwrite (reg=0x%08x)\n",
614 addr, data, reg);
615 return -ETIMEDOUT;
616 }
617
618 return 0;
619 }
620
621 static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
622 {
623 static const u32 adm8211_rfmd2958_reg5[] =
624 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
625 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
626 static const u32 adm8211_rfmd2958_reg6[] =
627 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
628 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
629
630 struct adm8211_priv *priv = dev->priv;
631 u8 ant_power = priv->ant_power > 0x3F ?
632 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
633 u8 tx_power = priv->tx_power > 0x3F ?
634 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
635 u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
636 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
637 u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
638 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
639 u32 reg;
640
641 ADM8211_IDLE();
642
643 /* Program synthesizer to new channel */
644 switch (priv->transceiver_type) {
645 case ADM8211_RFMD2958:
646 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
647 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
648 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
649
650 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
651 adm8211_rfmd2958_reg5[chan - 1]);
652 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
653 adm8211_rfmd2958_reg6[chan - 1]);
654 break;
655
656 case ADM8211_RFMD2948:
657 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
658 SI4126_MAIN_XINDIV2);
659 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
660 SI4126_POWERDOWN_PDIB |
661 SI4126_POWERDOWN_PDRB);
662 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
663 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
664 (chan == 14 ?
665 2110 : (2033 + (chan * 5))));
666 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
667 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
668 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
669 break;
670
671 case ADM8211_MAX2820:
672 adm8211_rf_write_syn_max2820(dev, 0x3,
673 (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
674 break;
675
676 case ADM8211_AL2210L:
677 adm8211_rf_write_syn_al2210l(dev, 0x0,
678 (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
679 break;
680
681 default:
682 wiphy_debug(dev->wiphy, "unsupported transceiver type %d\n",
683 priv->transceiver_type);
684 break;
685 }
686
687 /* write BBP regs */
688 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
689
690 /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
691 /* TODO: remove if SMC 2635W doesn't need this */
692 if (priv->transceiver_type == ADM8211_RFMD2948) {
693 reg = ADM8211_CSR_READ(GPIO);
694 reg &= 0xfffc0000;
695 reg |= ADM8211_CSR_GPIO_EN0;
696 if (chan != 14)
697 reg |= ADM8211_CSR_GPIO_O0;
698 ADM8211_CSR_WRITE(GPIO, reg);
699 }
700
701 if (priv->transceiver_type == ADM8211_RFMD2958) {
702 /* set PCNT2 */
703 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
704 /* set PCNT1 P_DESIRED/MID_BIAS */
705 reg = le16_to_cpu(priv->eeprom->cr49);
706 reg >>= 13;
707 reg <<= 15;
708 reg |= ant_power << 9;
709 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
710 /* set TXRX TX_GAIN */
711 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
712 (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0));
713 } else {
714 reg = ADM8211_CSR_READ(PLCPHD);
715 reg &= 0xff00ffff;
716 reg |= tx_power << 18;
717 ADM8211_CSR_WRITE(PLCPHD, reg);
718 }
719
720 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
721 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
722 ADM8211_CSR_READ(SYNRF);
723 msleep(30);
724
725 /* RF3000 BBP */
726 if (priv->transceiver_type != ADM8211_RFMD2958)
727 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
728 tx_power<<2);
729 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
730 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
731 adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ?
732 priv->eeprom->cr28 : 0);
733 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
734
735 ADM8211_CSR_WRITE(SYNRF, 0);
736
737 /* Nothing to do for ADMtek BBP */
738 } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
739 wiphy_debug(dev->wiphy, "unsupported BBP type %d\n",
740 priv->bbp_type);
741
742 ADM8211_RESTORE();
743
744 /* update current channel for adhoc (and maybe AP mode) */
745 reg = ADM8211_CSR_READ(CAP0);
746 reg &= ~0xF;
747 reg |= chan;
748 ADM8211_CSR_WRITE(CAP0, reg);
749
750 return 0;
751 }
752
753 static void adm8211_update_mode(struct ieee80211_hw *dev)
754 {
755 struct adm8211_priv *priv = dev->priv;
756
757 ADM8211_IDLE();
758
759 priv->soft_rx_crc = 0;
760 switch (priv->mode) {
761 case NL80211_IFTYPE_STATION:
762 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
763 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
764 break;
765 case NL80211_IFTYPE_ADHOC:
766 priv->nar &= ~ADM8211_NAR_PR;
767 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
768
769 /* don't trust the error bits on rev 0x20 and up in adhoc */
770 if (priv->pdev->revision >= ADM8211_REV_BA)
771 priv->soft_rx_crc = 1;
772 break;
773 case NL80211_IFTYPE_MONITOR:
774 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
775 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
776 break;
777 }
778
779 ADM8211_RESTORE();
780 }
781
782 static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
783 {
784 struct adm8211_priv *priv = dev->priv;
785
786 switch (priv->transceiver_type) {
787 case ADM8211_RFMD2958:
788 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
789 /* comments taken from ADMtek vendor driver */
790
791 /* Reset RF2958 after power on */
792 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
793 /* Initialize RF VCO Core Bias to maximum */
794 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
795 /* Initialize IF PLL */
796 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
797 /* Initialize IF PLL Coarse Tuning */
798 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
799 /* Initialize RF PLL */
800 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
801 /* Initialize RF PLL Coarse Tuning */
802 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
803 /* Initialize TX gain and filter BW (R9) */
804 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
805 (priv->transceiver_type == ADM8211_RFMD2958 ?
806 0x10050 : 0x00050));
807 /* Initialize CAL register */
808 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
809 break;
810
811 case ADM8211_MAX2820:
812 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
813 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
814 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
815 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
816 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
817 break;
818
819 case ADM8211_AL2210L:
820 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
821 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
822 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
823 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
824 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
825 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
826 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
827 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
828 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
829 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
830 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
831 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
832 break;
833
834 case ADM8211_RFMD2948:
835 default:
836 break;
837 }
838 }
839
840 static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
841 {
842 struct adm8211_priv *priv = dev->priv;
843 u32 reg;
844
845 /* write addresses */
846 if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
847 ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A);
848 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
849 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
850 } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
851 priv->bbp_type == ADM8211_TYPE_ADMTEK) {
852 /* check specific BBP type */
853 switch (priv->specific_bbptype) {
854 case ADM8211_BBP_RFMD3000:
855 case ADM8211_BBP_RFMD3002:
856 ADM8211_CSR_WRITE(MMIWA, 0x00009101);
857 ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
858 break;
859
860 case ADM8211_BBP_ADM8011:
861 ADM8211_CSR_WRITE(MMIWA, 0x00008903);
862 ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
863
864 reg = ADM8211_CSR_READ(BBPCTL);
865 reg &= ~ADM8211_BBPCTL_TYPE;
866 reg |= 0x5 << 18;
867 ADM8211_CSR_WRITE(BBPCTL, reg);
868 break;
869 }
870
871 switch (priv->pdev->revision) {
872 case ADM8211_REV_CA:
873 if (priv->transceiver_type == ADM8211_RFMD2958 ||
874 priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
875 priv->transceiver_type == ADM8211_RFMD2948)
876 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
877 else if (priv->transceiver_type == ADM8211_MAX2820 ||
878 priv->transceiver_type == ADM8211_AL2210L)
879 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
880 break;
881
882 case ADM8211_REV_BA:
883 reg = ADM8211_CSR_READ(MMIRD1);
884 reg &= 0x0000FFFF;
885 reg |= 0x7e100000;
886 ADM8211_CSR_WRITE(MMIRD1, reg);
887 break;
888
889 case ADM8211_REV_AB:
890 case ADM8211_REV_AF:
891 default:
892 ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
893 break;
894 }
895
896 /* For RFMD */
897 ADM8211_CSR_WRITE(MACTEST, 0x800);
898 }
899
900 adm8211_hw_init_syn(dev);
901
902 /* Set RF Power control IF pin to PE1+PHYRST# */
903 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
904 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
905 ADM8211_CSR_READ(SYNRF);
906 msleep(20);
907
908 /* write BBP regs */
909 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
910 /* RF3000 BBP */
911 /* another set:
912 * 11: c8
913 * 14: 14
914 * 15: 50 (chan 1..13; chan 14: d0)
915 * 1c: 00
916 * 1d: 84
917 */
918 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
919 /* antenna selection: diversity */
920 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
921 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
922 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
923 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
924
925 if (priv->eeprom->major_version < 2) {
926 adm8211_write_bbp(dev, 0x1c, 0x00);
927 adm8211_write_bbp(dev, 0x1d, 0x80);
928 } else {
929 if (priv->pdev->revision == ADM8211_REV_BA)
930 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
931 else
932 adm8211_write_bbp(dev, 0x1c, 0x00);
933
934 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
935 }
936 } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
937 /* reset baseband */
938 adm8211_write_bbp(dev, 0x00, 0xFF);
939 /* antenna selection: diversity */
940 adm8211_write_bbp(dev, 0x07, 0x0A);
941
942 /* TODO: find documentation for this */
943 switch (priv->transceiver_type) {
944 case ADM8211_RFMD2958:
945 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
946 adm8211_write_bbp(dev, 0x00, 0x00);
947 adm8211_write_bbp(dev, 0x01, 0x00);
948 adm8211_write_bbp(dev, 0x02, 0x00);
949 adm8211_write_bbp(dev, 0x03, 0x00);
950 adm8211_write_bbp(dev, 0x06, 0x0f);
951 adm8211_write_bbp(dev, 0x09, 0x00);
952 adm8211_write_bbp(dev, 0x0a, 0x00);
953 adm8211_write_bbp(dev, 0x0b, 0x00);
954 adm8211_write_bbp(dev, 0x0c, 0x00);
955 adm8211_write_bbp(dev, 0x0f, 0xAA);
956 adm8211_write_bbp(dev, 0x10, 0x8c);
957 adm8211_write_bbp(dev, 0x11, 0x43);
958 adm8211_write_bbp(dev, 0x18, 0x40);
959 adm8211_write_bbp(dev, 0x20, 0x23);
960 adm8211_write_bbp(dev, 0x21, 0x02);
961 adm8211_write_bbp(dev, 0x22, 0x28);
962 adm8211_write_bbp(dev, 0x23, 0x30);
963 adm8211_write_bbp(dev, 0x24, 0x2d);
964 adm8211_write_bbp(dev, 0x28, 0x35);
965 adm8211_write_bbp(dev, 0x2a, 0x8c);
966 adm8211_write_bbp(dev, 0x2b, 0x81);
967 adm8211_write_bbp(dev, 0x2c, 0x44);
968 adm8211_write_bbp(dev, 0x2d, 0x0A);
969 adm8211_write_bbp(dev, 0x29, 0x40);
970 adm8211_write_bbp(dev, 0x60, 0x08);
971 adm8211_write_bbp(dev, 0x64, 0x01);
972 break;
973
974 case ADM8211_MAX2820:
975 adm8211_write_bbp(dev, 0x00, 0x00);
976 adm8211_write_bbp(dev, 0x01, 0x00);
977 adm8211_write_bbp(dev, 0x02, 0x00);
978 adm8211_write_bbp(dev, 0x03, 0x00);
979 adm8211_write_bbp(dev, 0x06, 0x0f);
980 adm8211_write_bbp(dev, 0x09, 0x05);
981 adm8211_write_bbp(dev, 0x0a, 0x02);
982 adm8211_write_bbp(dev, 0x0b, 0x00);
983 adm8211_write_bbp(dev, 0x0c, 0x0f);
984 adm8211_write_bbp(dev, 0x0f, 0x55);
985 adm8211_write_bbp(dev, 0x10, 0x8d);
986 adm8211_write_bbp(dev, 0x11, 0x43);
987 adm8211_write_bbp(dev, 0x18, 0x4a);
988 adm8211_write_bbp(dev, 0x20, 0x20);
989 adm8211_write_bbp(dev, 0x21, 0x02);
990 adm8211_write_bbp(dev, 0x22, 0x23);
991 adm8211_write_bbp(dev, 0x23, 0x30);
992 adm8211_write_bbp(dev, 0x24, 0x2d);
993 adm8211_write_bbp(dev, 0x2a, 0x8c);
994 adm8211_write_bbp(dev, 0x2b, 0x81);
995 adm8211_write_bbp(dev, 0x2c, 0x44);
996 adm8211_write_bbp(dev, 0x29, 0x4a);
997 adm8211_write_bbp(dev, 0x60, 0x2b);
998 adm8211_write_bbp(dev, 0x64, 0x01);
999 break;
1000
1001 case ADM8211_AL2210L:
1002 adm8211_write_bbp(dev, 0x00, 0x00);
1003 adm8211_write_bbp(dev, 0x01, 0x00);
1004 adm8211_write_bbp(dev, 0x02, 0x00);
1005 adm8211_write_bbp(dev, 0x03, 0x00);
1006 adm8211_write_bbp(dev, 0x06, 0x0f);
1007 adm8211_write_bbp(dev, 0x07, 0x05);
1008 adm8211_write_bbp(dev, 0x08, 0x03);
1009 adm8211_write_bbp(dev, 0x09, 0x00);
1010 adm8211_write_bbp(dev, 0x0a, 0x00);
1011 adm8211_write_bbp(dev, 0x0b, 0x00);
1012 adm8211_write_bbp(dev, 0x0c, 0x10);
1013 adm8211_write_bbp(dev, 0x0f, 0x55);
1014 adm8211_write_bbp(dev, 0x10, 0x8d);
1015 adm8211_write_bbp(dev, 0x11, 0x43);
1016 adm8211_write_bbp(dev, 0x18, 0x4a);
1017 adm8211_write_bbp(dev, 0x20, 0x20);
1018 adm8211_write_bbp(dev, 0x21, 0x02);
1019 adm8211_write_bbp(dev, 0x22, 0x23);
1020 adm8211_write_bbp(dev, 0x23, 0x30);
1021 adm8211_write_bbp(dev, 0x24, 0x2d);
1022 adm8211_write_bbp(dev, 0x2a, 0xaa);
1023 adm8211_write_bbp(dev, 0x2b, 0x81);
1024 adm8211_write_bbp(dev, 0x2c, 0x44);
1025 adm8211_write_bbp(dev, 0x29, 0xfa);
1026 adm8211_write_bbp(dev, 0x60, 0x2d);
1027 adm8211_write_bbp(dev, 0x64, 0x01);
1028 break;
1029
1030 case ADM8211_RFMD2948:
1031 break;
1032
1033 default:
1034 wiphy_debug(dev->wiphy, "unsupported transceiver %d\n",
1035 priv->transceiver_type);
1036 break;
1037 }
1038 } else
1039 wiphy_debug(dev->wiphy, "unsupported BBP %d\n", priv->bbp_type);
1040
1041 ADM8211_CSR_WRITE(SYNRF, 0);
1042
1043 /* Set RF CAL control source to MAC control */
1044 reg = ADM8211_CSR_READ(SYNCTL);
1045 reg |= ADM8211_SYNCTL_SELCAL;
1046 ADM8211_CSR_WRITE(SYNCTL, reg);
1047
1048 return 0;
1049 }
1050
1051 /* configures hw beacons/probe responses */
1052 static int adm8211_set_rate(struct ieee80211_hw *dev)
1053 {
1054 struct adm8211_priv *priv = dev->priv;
1055 u32 reg;
1056 int i = 0;
1057 u8 rate_buf[12] = {0};
1058
1059 /* write supported rates */
1060 if (priv->pdev->revision != ADM8211_REV_BA) {
1061 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1062 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1063 rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80;
1064 } else {
1065 /* workaround for rev BA specific bug */
1066 rate_buf[0] = 0x04;
1067 rate_buf[1] = 0x82;
1068 rate_buf[2] = 0x04;
1069 rate_buf[3] = 0x0b;
1070 rate_buf[4] = 0x16;
1071 }
1072
1073 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1074 ARRAY_SIZE(adm8211_rates) + 1);
1075
1076 reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1077 reg |= 1 << 15; /* short preamble */
1078 reg |= 110 << 24;
1079 ADM8211_CSR_WRITE(PLCPHD, reg);
1080
1081 /* MTMLT = 512 TU (max TX MSDU lifetime)
1082 * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1083 * SRTYLIM = 224 (short retry limit, TX header value is default) */
1084 ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1085
1086 return 0;
1087 }
1088
1089 static void adm8211_hw_init(struct ieee80211_hw *dev)
1090 {
1091 struct adm8211_priv *priv = dev->priv;
1092 u32 reg;
1093 u8 cline;
1094
1095 reg = ADM8211_CSR_READ(PAR);
1096 reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1097 reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1098
1099 if (!pci_set_mwi(priv->pdev)) {
1100 reg |= 0x1 << 24;
1101 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1102
1103 switch (cline) {
1104 case 0x8:
1105 reg |= (0x1 << 14);
1106 break;
1107 case 0x10:
1108 reg |= (0x2 << 14);
1109 break;
1110 case 0x20:
1111 reg |= (0x3 << 14);
1112 break;
1113 default:
1114 reg |= (0x0 << 14);
1115 break;
1116 }
1117 }
1118
1119 ADM8211_CSR_WRITE(PAR, reg);
1120
1121 reg = ADM8211_CSR_READ(CSR_TEST1);
1122 reg &= ~(0xF << 28);
1123 reg |= (1 << 28) | (1 << 31);
1124 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1125
1126 /* lose link after 4 lost beacons */
1127 reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1128 ADM8211_CSR_WRITE(WCSR, reg);
1129
1130 /* Disable APM, enable receive FIFO threshold, and set drain receive
1131 * threshold to store-and-forward */
1132 reg = ADM8211_CSR_READ(CMDR);
1133 reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1134 reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1135 ADM8211_CSR_WRITE(CMDR, reg);
1136
1137 adm8211_set_rate(dev);
1138
1139 /* 4-bit values:
1140 * PWR1UP = 8 * 2 ms
1141 * PWR0PAPE = 8 us or 5 us
1142 * PWR1PAPE = 1 us or 3 us
1143 * PWR0TRSW = 5 us
1144 * PWR1TRSW = 12 us
1145 * PWR0PE2 = 13 us
1146 * PWR1PE2 = 1 us
1147 * PWR0TXPE = 8 or 6 */
1148 if (priv->pdev->revision < ADM8211_REV_CA)
1149 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1150 else
1151 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1152
1153 /* Enable store and forward for transmit */
1154 priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1155 ADM8211_CSR_WRITE(NAR, priv->nar);
1156
1157 /* Reset RF */
1158 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1159 ADM8211_CSR_READ(SYNRF);
1160 msleep(10);
1161 ADM8211_CSR_WRITE(SYNRF, 0);
1162 ADM8211_CSR_READ(SYNRF);
1163 msleep(5);
1164
1165 /* Set CFP Max Duration to 0x10 TU */
1166 reg = ADM8211_CSR_READ(CFPP);
1167 reg &= ~(0xffff << 8);
1168 reg |= 0x0010 << 8;
1169 ADM8211_CSR_WRITE(CFPP, reg);
1170
1171 /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1172 * TUCNT = 0x3ff - Tu counter 1024 us */
1173 ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1174
1175 /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1176 * DIFS=50 us, EIFS=100 us */
1177 if (priv->pdev->revision < ADM8211_REV_CA)
1178 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1179 (50 << 9) | 100);
1180 else
1181 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1182 (50 << 9) | 100);
1183
1184 /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1185 * RMRD = 2346 * 8 + 1 us (max RX duration) */
1186 ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1187
1188 /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1189 ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1190
1191 /* Initialize BBP (and SYN) */
1192 adm8211_hw_init_bbp(dev);
1193
1194 /* make sure interrupts are off */
1195 ADM8211_CSR_WRITE(IER, 0);
1196
1197 /* ACK interrupts */
1198 ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1199
1200 /* Setup WEP (turns it off for now) */
1201 reg = ADM8211_CSR_READ(MACTEST);
1202 reg &= ~(7 << 20);
1203 ADM8211_CSR_WRITE(MACTEST, reg);
1204
1205 reg = ADM8211_CSR_READ(WEPCTL);
1206 reg &= ~ADM8211_WEPCTL_WEPENABLE;
1207 reg |= ADM8211_WEPCTL_WEPRXBYP;
1208 ADM8211_CSR_WRITE(WEPCTL, reg);
1209
1210 /* Clear the missed-packet counter. */
1211 ADM8211_CSR_READ(LPC);
1212 }
1213
1214 static int adm8211_hw_reset(struct ieee80211_hw *dev)
1215 {
1216 struct adm8211_priv *priv = dev->priv;
1217 u32 reg, tmp;
1218 int timeout = 100;
1219
1220 /* Power-on issue */
1221 /* TODO: check if this is necessary */
1222 ADM8211_CSR_WRITE(FRCTL, 0);
1223
1224 /* Reset the chip */
1225 tmp = ADM8211_CSR_READ(PAR);
1226 ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1227
1228 while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1229 msleep(50);
1230
1231 if (timeout <= 0)
1232 return -ETIMEDOUT;
1233
1234 ADM8211_CSR_WRITE(PAR, tmp);
1235
1236 if (priv->pdev->revision == ADM8211_REV_BA &&
1237 (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1238 priv->transceiver_type == ADM8211_RFMD2958)) {
1239 reg = ADM8211_CSR_READ(CSR_TEST1);
1240 reg |= (1 << 4) | (1 << 5);
1241 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1242 } else if (priv->pdev->revision == ADM8211_REV_CA) {
1243 reg = ADM8211_CSR_READ(CSR_TEST1);
1244 reg &= ~((1 << 4) | (1 << 5));
1245 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1246 }
1247
1248 ADM8211_CSR_WRITE(FRCTL, 0);
1249
1250 reg = ADM8211_CSR_READ(CSR_TEST0);
1251 reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1252 ADM8211_CSR_WRITE(CSR_TEST0, reg);
1253
1254 adm8211_clear_sram(dev);
1255
1256 return 0;
1257 }
1258
1259 static u64 adm8211_get_tsft(struct ieee80211_hw *dev,
1260 struct ieee80211_vif *vif)
1261 {
1262 struct adm8211_priv *priv = dev->priv;
1263 u32 tsftl;
1264 u64 tsft;
1265
1266 tsftl = ADM8211_CSR_READ(TSFTL);
1267 tsft = ADM8211_CSR_READ(TSFTH);
1268 tsft <<= 32;
1269 tsft |= tsftl;
1270
1271 return tsft;
1272 }
1273
1274 static void adm8211_set_interval(struct ieee80211_hw *dev,
1275 unsigned short bi, unsigned short li)
1276 {
1277 struct adm8211_priv *priv = dev->priv;
1278 u32 reg;
1279
1280 /* BP (beacon interval) = data->beacon_interval
1281 * LI (listen interval) = data->listen_interval (in beacon intervals) */
1282 reg = (bi << 16) | li;
1283 ADM8211_CSR_WRITE(BPLI, reg);
1284 }
1285
1286 static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
1287 {
1288 struct adm8211_priv *priv = dev->priv;
1289 u32 reg;
1290
1291 ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
1292 reg = ADM8211_CSR_READ(ABDA1);
1293 reg &= 0x0000ffff;
1294 reg |= (bssid[4] << 16) | (bssid[5] << 24);
1295 ADM8211_CSR_WRITE(ABDA1, reg);
1296 }
1297
1298 static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
1299 {
1300 struct adm8211_priv *priv = dev->priv;
1301 struct ieee80211_conf *conf = &dev->conf;
1302 int channel =
1303 ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
1304
1305 if (channel != priv->channel) {
1306 priv->channel = channel;
1307 adm8211_rf_set_channel(dev, priv->channel);
1308 }
1309
1310 return 0;
1311 }
1312
1313 static void adm8211_bss_info_changed(struct ieee80211_hw *dev,
1314 struct ieee80211_vif *vif,
1315 struct ieee80211_bss_conf *conf,
1316 u32 changes)
1317 {
1318 struct adm8211_priv *priv = dev->priv;
1319
1320 if (!(changes & BSS_CHANGED_BSSID))
1321 return;
1322
1323 if (!ether_addr_equal(conf->bssid, priv->bssid)) {
1324 adm8211_set_bssid(dev, conf->bssid);
1325 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1326 }
1327 }
1328
1329 static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw,
1330 struct netdev_hw_addr_list *mc_list)
1331 {
1332 unsigned int bit_nr;
1333 u32 mc_filter[2];
1334 struct netdev_hw_addr *ha;
1335
1336 mc_filter[1] = mc_filter[0] = 0;
1337
1338 netdev_hw_addr_list_for_each(ha, mc_list) {
1339 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1340
1341 bit_nr &= 0x3F;
1342 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1343 }
1344
1345 return mc_filter[0] | ((u64)(mc_filter[1]) << 32);
1346 }
1347
1348 static void adm8211_configure_filter(struct ieee80211_hw *dev,
1349 unsigned int changed_flags,
1350 unsigned int *total_flags,
1351 u64 multicast)
1352 {
1353 static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1354 struct adm8211_priv *priv = dev->priv;
1355 unsigned int new_flags;
1356 u32 mc_filter[2];
1357
1358 mc_filter[0] = multicast;
1359 mc_filter[1] = multicast >> 32;
1360
1361 new_flags = 0;
1362
1363 if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) {
1364 new_flags |= FIF_ALLMULTI;
1365 priv->nar &= ~ADM8211_NAR_PR;
1366 priv->nar |= ADM8211_NAR_MM;
1367 mc_filter[1] = mc_filter[0] = ~0;
1368 } else {
1369 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
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 ieee80211_hw_set(dev, RX_INCLUDES_FCS);
1380 else
1381 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, dev->flags);
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_vif *vif)
1395 {
1396 struct adm8211_priv *priv = dev->priv;
1397 if (priv->mode != NL80211_IFTYPE_MONITOR)
1398 return -EOPNOTSUPP;
1399
1400 switch (vif->type) {
1401 case NL80211_IFTYPE_STATION:
1402 priv->mode = vif->type;
1403 break;
1404 default:
1405 return -EOPNOTSUPP;
1406 }
1407
1408 ADM8211_IDLE();
1409
1410 ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)vif->addr));
1411 ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(vif->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_vif *vif)
1422 {
1423 struct adm8211_priv *priv = dev->priv;
1424 priv->mode = NL80211_IFTYPE_MONITOR;
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 if (pci_dma_mapping_error(priv->pdev, rx_info->mapping)) {
1457 dev_kfree_skb(rx_info->skb);
1458 rx_info->skb = NULL;
1459 break;
1460 }
1461
1462 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1463 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1464 }
1465
1466 /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1467 for (i = 0; i < priv->tx_ring_size; i++) {
1468 desc = &priv->tx_ring[i];
1469 tx_info = &priv->tx_buffers[i];
1470
1471 tx_info->skb = NULL;
1472 tx_info->mapping = 0;
1473 desc->status = 0;
1474 }
1475 desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1476
1477 priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1478 ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1479 ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1480
1481 return 0;
1482 }
1483
1484 static void adm8211_free_rings(struct ieee80211_hw *dev)
1485 {
1486 struct adm8211_priv *priv = dev->priv;
1487 unsigned int i;
1488
1489 for (i = 0; i < priv->rx_ring_size; i++) {
1490 if (!priv->rx_buffers[i].skb)
1491 continue;
1492
1493 pci_unmap_single(
1494 priv->pdev,
1495 priv->rx_buffers[i].mapping,
1496 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
1497
1498 dev_kfree_skb(priv->rx_buffers[i].skb);
1499 }
1500
1501 for (i = 0; i < priv->tx_ring_size; i++) {
1502 if (!priv->tx_buffers[i].skb)
1503 continue;
1504
1505 pci_unmap_single(priv->pdev,
1506 priv->tx_buffers[i].mapping,
1507 priv->tx_buffers[i].skb->len,
1508 PCI_DMA_TODEVICE);
1509
1510 dev_kfree_skb(priv->tx_buffers[i].skb);
1511 }
1512 }
1513
1514 static int adm8211_start(struct ieee80211_hw *dev)
1515 {
1516 struct adm8211_priv *priv = dev->priv;
1517 int retval;
1518
1519 /* Power up MAC and RF chips */
1520 retval = adm8211_hw_reset(dev);
1521 if (retval) {
1522 wiphy_err(dev->wiphy, "hardware reset failed\n");
1523 goto fail;
1524 }
1525
1526 retval = adm8211_init_rings(dev);
1527 if (retval) {
1528 wiphy_err(dev->wiphy, "failed to initialize rings\n");
1529 goto fail;
1530 }
1531
1532 /* Init hardware */
1533 adm8211_hw_init(dev);
1534 adm8211_rf_set_channel(dev, priv->channel);
1535
1536 retval = request_irq(priv->pdev->irq, adm8211_interrupt,
1537 IRQF_SHARED, "adm8211", dev);
1538 if (retval) {
1539 wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
1540 goto fail;
1541 }
1542
1543 ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1544 ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1545 ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1546 priv->mode = NL80211_IFTYPE_MONITOR;
1547 adm8211_update_mode(dev);
1548 ADM8211_CSR_WRITE(RDR, 0);
1549
1550 adm8211_set_interval(dev, 100, 10);
1551 return 0;
1552
1553 fail:
1554 return retval;
1555 }
1556
1557 static void adm8211_stop(struct ieee80211_hw *dev)
1558 {
1559 struct adm8211_priv *priv = dev->priv;
1560
1561 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1562 priv->nar = 0;
1563 ADM8211_CSR_WRITE(NAR, 0);
1564 ADM8211_CSR_WRITE(IER, 0);
1565 ADM8211_CSR_READ(NAR);
1566
1567 free_irq(priv->pdev->irq, dev);
1568
1569 adm8211_free_rings(dev);
1570 }
1571
1572 static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
1573 int plcp_signal, int short_preamble)
1574 {
1575 /* Alternative calculation from NetBSD: */
1576
1577 /* IEEE 802.11b durations for DSSS PHY in microseconds */
1578 #define IEEE80211_DUR_DS_LONG_PREAMBLE 144
1579 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
1580 #define IEEE80211_DUR_DS_FAST_PLCPHDR 24
1581 #define IEEE80211_DUR_DS_SLOW_PLCPHDR 48
1582 #define IEEE80211_DUR_DS_SLOW_ACK 112
1583 #define IEEE80211_DUR_DS_FAST_ACK 56
1584 #define IEEE80211_DUR_DS_SLOW_CTS 112
1585 #define IEEE80211_DUR_DS_FAST_CTS 56
1586 #define IEEE80211_DUR_DS_SLOT 20
1587 #define IEEE80211_DUR_DS_SIFS 10
1588
1589 int remainder;
1590
1591 *dur = (80 * (24 + payload_len) + plcp_signal - 1)
1592 / plcp_signal;
1593
1594 if (plcp_signal <= PLCP_SIGNAL_2M)
1595 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
1596 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1597 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1598 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1599 IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
1600 else
1601 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
1602 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1603 IEEE80211_DUR_DS_SHORT_PREAMBLE +
1604 IEEE80211_DUR_DS_FAST_PLCPHDR) +
1605 IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
1606
1607 /* lengthen duration if long preamble */
1608 if (!short_preamble)
1609 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
1610 IEEE80211_DUR_DS_SHORT_PREAMBLE) +
1611 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
1612 IEEE80211_DUR_DS_FAST_PLCPHDR);
1613
1614
1615 *plcp = (80 * len) / plcp_signal;
1616 remainder = (80 * len) % plcp_signal;
1617 if (plcp_signal == PLCP_SIGNAL_11M &&
1618 remainder <= 30 && remainder > 0)
1619 *plcp = (*plcp | 0x8000) + 1;
1620 else if (remainder)
1621 (*plcp)++;
1622 }
1623
1624 /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
1625 static int adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1626 u16 plcp_signal,
1627 size_t hdrlen)
1628 {
1629 struct adm8211_priv *priv = dev->priv;
1630 unsigned long flags;
1631 dma_addr_t mapping;
1632 unsigned int entry;
1633 u32 flag;
1634
1635 mapping = pci_map_single(priv->pdev, skb->data, skb->len,
1636 PCI_DMA_TODEVICE);
1637 if (pci_dma_mapping_error(priv->pdev, mapping))
1638 return -ENOMEM;
1639
1640 spin_lock_irqsave(&priv->lock, flags);
1641
1642 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1643 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1644 else
1645 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1646
1647 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1648 ieee80211_stop_queue(dev, 0);
1649
1650 entry = priv->cur_tx % priv->tx_ring_size;
1651
1652 priv->tx_buffers[entry].skb = skb;
1653 priv->tx_buffers[entry].mapping = mapping;
1654 priv->tx_buffers[entry].hdrlen = hdrlen;
1655 priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
1656
1657 if (entry == priv->tx_ring_size - 1)
1658 flag |= TDES1_CONTROL_TER;
1659 priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
1660
1661 /* Set TX rate (SIGNAL field in PLCP PPDU format) */
1662 flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
1663 priv->tx_ring[entry].status = cpu_to_le32(flag);
1664
1665 priv->cur_tx++;
1666
1667 spin_unlock_irqrestore(&priv->lock, flags);
1668
1669 /* Trigger transmit poll */
1670 ADM8211_CSR_WRITE(TDR, 0);
1671
1672 return 0;
1673 }
1674
1675 /* Put adm8211_tx_hdr on skb and transmit */
1676 static void adm8211_tx(struct ieee80211_hw *dev,
1677 struct ieee80211_tx_control *control,
1678 struct sk_buff *skb)
1679 {
1680 struct adm8211_tx_hdr *txhdr;
1681 size_t payload_len, hdrlen;
1682 int plcp, dur, len, plcp_signal, short_preamble;
1683 struct ieee80211_hdr *hdr;
1684 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1685 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
1686 u8 rc_flags;
1687
1688 rc_flags = info->control.rates[0].flags;
1689 short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
1690 plcp_signal = txrate->bitrate;
1691
1692 hdr = (struct ieee80211_hdr *)skb->data;
1693 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1694 memcpy(skb->cb, skb->data, hdrlen);
1695 hdr = (struct ieee80211_hdr *)skb->cb;
1696 skb_pull(skb, hdrlen);
1697 payload_len = skb->len;
1698
1699 txhdr = skb_push(skb, sizeof(*txhdr));
1700 memset(txhdr, 0, sizeof(*txhdr));
1701 memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
1702 txhdr->signal = plcp_signal;
1703 txhdr->frame_body_size = cpu_to_le16(payload_len);
1704 txhdr->frame_control = hdr->frame_control;
1705
1706 len = hdrlen + payload_len + FCS_LEN;
1707
1708 txhdr->frag = cpu_to_le16(0x0FFF);
1709 adm8211_calc_durations(&dur, &plcp, payload_len,
1710 len, plcp_signal, short_preamble);
1711 txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1712 txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1713 txhdr->dur_frag_head = cpu_to_le16(dur);
1714 txhdr->dur_frag_tail = cpu_to_le16(dur);
1715
1716 txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1717
1718 if (short_preamble)
1719 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1720
1721 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1722 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1723
1724 txhdr->retry_limit = info->control.rates[0].count;
1725
1726 if (adm8211_tx_raw(dev, skb, plcp_signal, hdrlen)) {
1727 /* Drop packet */
1728 ieee80211_free_txskb(dev, skb);
1729 }
1730 }
1731
1732 static int adm8211_alloc_rings(struct ieee80211_hw *dev)
1733 {
1734 struct adm8211_priv *priv = dev->priv;
1735 unsigned int ring_size;
1736
1737 priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
1738 sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
1739 if (!priv->rx_buffers)
1740 return -ENOMEM;
1741
1742 priv->tx_buffers = (void *)priv->rx_buffers +
1743 sizeof(*priv->rx_buffers) * priv->rx_ring_size;
1744
1745 /* Allocate TX/RX descriptors */
1746 ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
1747 sizeof(struct adm8211_desc) * priv->tx_ring_size;
1748 priv->rx_ring = pci_alloc_consistent(priv->pdev, ring_size,
1749 &priv->rx_ring_dma);
1750
1751 if (!priv->rx_ring) {
1752 kfree(priv->rx_buffers);
1753 priv->rx_buffers = NULL;
1754 priv->tx_buffers = NULL;
1755 return -ENOMEM;
1756 }
1757
1758 priv->tx_ring = priv->rx_ring + priv->rx_ring_size;
1759 priv->tx_ring_dma = priv->rx_ring_dma +
1760 sizeof(struct adm8211_desc) * priv->rx_ring_size;
1761
1762 return 0;
1763 }
1764
1765 static const struct ieee80211_ops adm8211_ops = {
1766 .tx = adm8211_tx,
1767 .start = adm8211_start,
1768 .stop = adm8211_stop,
1769 .add_interface = adm8211_add_interface,
1770 .remove_interface = adm8211_remove_interface,
1771 .config = adm8211_config,
1772 .bss_info_changed = adm8211_bss_info_changed,
1773 .prepare_multicast = adm8211_prepare_multicast,
1774 .configure_filter = adm8211_configure_filter,
1775 .get_stats = adm8211_get_stats,
1776 .get_tsf = adm8211_get_tsft
1777 };
1778
1779 static int adm8211_probe(struct pci_dev *pdev,
1780 const struct pci_device_id *id)
1781 {
1782 struct ieee80211_hw *dev;
1783 struct adm8211_priv *priv;
1784 unsigned long mem_len;
1785 unsigned int io_len;
1786 int err;
1787 u32 reg;
1788 u8 perm_addr[ETH_ALEN];
1789
1790 err = pci_enable_device(pdev);
1791 if (err) {
1792 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1793 pci_name(pdev));
1794 return err;
1795 }
1796
1797 io_len = pci_resource_len(pdev, 0);
1798 mem_len = pci_resource_len(pdev, 1);
1799 if (io_len < 256 || mem_len < 1024) {
1800 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1801 pci_name(pdev));
1802 goto err_disable_pdev;
1803 }
1804
1805
1806 /* check signature */
1807 pci_read_config_dword(pdev, 0x80 /* CR32 */, &reg);
1808 if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1809 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1810 pci_name(pdev), reg);
1811 goto err_disable_pdev;
1812 }
1813
1814 err = pci_request_regions(pdev, "adm8211");
1815 if (err) {
1816 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1817 pci_name(pdev));
1818 return err; /* someone else grabbed it? don't disable it */
1819 }
1820
1821 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
1822 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1823 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1824 pci_name(pdev));
1825 goto err_free_reg;
1826 }
1827
1828 pci_set_master(pdev);
1829
1830 dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1831 if (!dev) {
1832 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1833 pci_name(pdev));
1834 err = -ENOMEM;
1835 goto err_free_reg;
1836 }
1837 priv = dev->priv;
1838 priv->pdev = pdev;
1839
1840 spin_lock_init(&priv->lock);
1841
1842 SET_IEEE80211_DEV(dev, &pdev->dev);
1843
1844 pci_set_drvdata(pdev, dev);
1845
1846 priv->map = pci_iomap(pdev, 1, mem_len);
1847 if (!priv->map)
1848 priv->map = pci_iomap(pdev, 0, io_len);
1849
1850 if (!priv->map) {
1851 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1852 pci_name(pdev));
1853 err = -ENOMEM;
1854 goto err_free_dev;
1855 }
1856
1857 priv->rx_ring_size = rx_ring_size;
1858 priv->tx_ring_size = tx_ring_size;
1859
1860 err = adm8211_alloc_rings(dev);
1861 if (err) {
1862 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1863 pci_name(pdev));
1864 goto err_iounmap;
1865 }
1866
1867 *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0));
1868 *(__le16 *)&perm_addr[4] =
1869 cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF);
1870
1871 if (!is_valid_ether_addr(perm_addr)) {
1872 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1873 pci_name(pdev));
1874 eth_random_addr(perm_addr);
1875 }
1876 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1877
1878 dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1879 /* dev->flags = RX_INCLUDES_FCS in promisc mode */
1880 ieee80211_hw_set(dev, SIGNAL_UNSPEC);
1881 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1882
1883 dev->max_signal = 100; /* FIXME: find better value */
1884
1885 dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1886
1887 priv->retry_limit = 3;
1888 priv->ant_power = 0x40;
1889 priv->tx_power = 0x40;
1890 priv->lpf_cutoff = 0xFF;
1891 priv->lnags_threshold = 0xFF;
1892 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1893
1894 /* Power-on issue. EEPROM won't read correctly without */
1895 if (pdev->revision >= ADM8211_REV_BA) {
1896 ADM8211_CSR_WRITE(FRCTL, 0);
1897 ADM8211_CSR_READ(FRCTL);
1898 ADM8211_CSR_WRITE(FRCTL, 1);
1899 ADM8211_CSR_READ(FRCTL);
1900 msleep(100);
1901 }
1902
1903 err = adm8211_read_eeprom(dev);
1904 if (err) {
1905 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1906 pci_name(pdev));
1907 goto err_free_desc;
1908 }
1909
1910 priv->channel = 1;
1911
1912 dev->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
1913
1914 wiphy_ext_feature_set(dev->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1915
1916 err = ieee80211_register_hw(dev);
1917 if (err) {
1918 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1919 pci_name(pdev));
1920 goto err_free_eeprom;
1921 }
1922
1923 wiphy_info(dev->wiphy, "hwaddr %pM, Rev 0x%02x\n",
1924 dev->wiphy->perm_addr, pdev->revision);
1925
1926 return 0;
1927
1928 err_free_eeprom:
1929 kfree(priv->eeprom);
1930
1931 err_free_desc:
1932 pci_free_consistent(pdev,
1933 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1934 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1935 priv->rx_ring, priv->rx_ring_dma);
1936 kfree(priv->rx_buffers);
1937
1938 err_iounmap:
1939 pci_iounmap(pdev, priv->map);
1940
1941 err_free_dev:
1942 ieee80211_free_hw(dev);
1943
1944 err_free_reg:
1945 pci_release_regions(pdev);
1946
1947 err_disable_pdev:
1948 pci_disable_device(pdev);
1949 return err;
1950 }
1951
1952
1953 static void adm8211_remove(struct pci_dev *pdev)
1954 {
1955 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1956 struct adm8211_priv *priv;
1957
1958 if (!dev)
1959 return;
1960
1961 ieee80211_unregister_hw(dev);
1962
1963 priv = dev->priv;
1964
1965 pci_free_consistent(pdev,
1966 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1967 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1968 priv->rx_ring, priv->rx_ring_dma);
1969
1970 kfree(priv->rx_buffers);
1971 kfree(priv->eeprom);
1972 pci_iounmap(pdev, priv->map);
1973 pci_release_regions(pdev);
1974 pci_disable_device(pdev);
1975 ieee80211_free_hw(dev);
1976 }
1977
1978
1979 #ifdef CONFIG_PM
1980 static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
1981 {
1982 pci_save_state(pdev);
1983 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1984 return 0;
1985 }
1986
1987 static int adm8211_resume(struct pci_dev *pdev)
1988 {
1989 pci_set_power_state(pdev, PCI_D0);
1990 pci_restore_state(pdev);
1991 return 0;
1992 }
1993 #endif /* CONFIG_PM */
1994
1995
1996 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
1997
1998 /* TODO: implement enable_wake */
1999 static struct pci_driver adm8211_driver = {
2000 .name = "adm8211",
2001 .id_table = adm8211_pci_id_table,
2002 .probe = adm8211_probe,
2003 .remove = adm8211_remove,
2004 #ifdef CONFIG_PM
2005 .suspend = adm8211_suspend,
2006 .resume = adm8211_resume,
2007 #endif /* CONFIG_PM */
2008 };
2009
2010 module_pci_driver(adm8211_driver);
Linux with added FPC-III support