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authorMichael Wu <flamingice@sourmilk.net>2007-08-31 01:15:25 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 19:49:33 -0400
commitcc0b88cf5ecf13cdd750f08e201ce8fadcdb601f (patch)
treed49dcdc2b0e02d2e8b3886fe54a568cc009c652a /drivers/net/wireless/adm8211.c
parentaa0daf0e020de9c20e653e437deaa1153c4d134e (diff)
[PATCH] Add adm8211 802.11b wireless driver
This patch adds a mac80211 wireless driver for ADMtek ADM8211 based wireless cards. Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/adm8211.c')
-rw-r--r--drivers/net/wireless/adm8211.c2063
1 files changed, 2063 insertions, 0 deletions
diff --git a/drivers/net/wireless/adm8211.c b/drivers/net/wireless/adm8211.c
new file mode 100644
index 000000000000..eec01fc15282
--- /dev/null
+++ b/drivers/net/wireless/adm8211.c
@@ -0,0 +1,2063 @@
1
2/*
3 * Linux device driver for ADMtek ADM8211 (IEEE 802.11b MAC/BBP)
4 *
5 * Copyright (c) 2003, Jouni Malinen <j@w1.fi>
6 * Copyright (c) 2004-2007, Michael Wu <flamingice@sourmilk.net>
7 * Some parts copyright (c) 2003 by David Young <dyoung@pobox.com>
8 * and used with permission.
9 *
10 * Much thanks to Infineon-ADMtek for their support of this driver.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation. See README and COPYING for
15 * more details.
16 */
17
18#include <linux/init.h>
19#include <linux/if.h>
20#include <linux/skbuff.h>
21#include <linux/etherdevice.h>
22#include <linux/pci.h>
23#include <linux/delay.h>
24#include <linux/crc32.h>
25#include <linux/eeprom_93cx6.h>
26#include <net/mac80211.h>
27
28#include "adm8211.h"
29
30MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
31MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");
32MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
33MODULE_SUPPORTED_DEVICE("ADM8211");
34MODULE_LICENSE("GPL");
35
36static unsigned int tx_ring_size __read_mostly = 16;
37static unsigned int rx_ring_size __read_mostly = 16;
38
39module_param(tx_ring_size, uint, 0);
40module_param(rx_ring_size, uint, 0);
41
42static const char version[] = KERN_INFO "adm8211: "
43"Copyright 2003, Jouni Malinen <j@w1.fi>; "
44"Copyright 2004-2007, Michael Wu <flamingice@sourmilk.net>\n";
45
46
47static struct pci_device_id adm8211_pci_id_table[] __devinitdata = {
48 /* ADMtek ADM8211 */
49 { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
50 { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
51 { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
52 { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
53 { 0 }
54};
55
56static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
57{
58 struct adm8211_priv *priv = eeprom->data;
59 u32 reg = ADM8211_CSR_READ(SPR);
60
61 eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
62 eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
63 eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
64 eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
65}
66
67static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
68{
69 struct adm8211_priv *priv = eeprom->data;
70 u32 reg = 0x4000 | ADM8211_SPR_SRS;
71
72 if (eeprom->reg_data_in)
73 reg |= ADM8211_SPR_SDI;
74 if (eeprom->reg_data_out)
75 reg |= ADM8211_SPR_SDO;
76 if (eeprom->reg_data_clock)
77 reg |= ADM8211_SPR_SCLK;
78 if (eeprom->reg_chip_select)
79 reg |= ADM8211_SPR_SCS;
80
81 ADM8211_CSR_WRITE(SPR, reg);
82 ADM8211_CSR_READ(SPR); /* eeprom_delay */
83}
84
85static int adm8211_read_eeprom(struct ieee80211_hw *dev)
86{
87 struct adm8211_priv *priv = dev->priv;
88 unsigned int words, i;
89 struct ieee80211_chan_range chan_range;
90 u16 cr49;
91 struct eeprom_93cx6 eeprom = {
92 .data = priv,
93 .register_read = adm8211_eeprom_register_read,
94 .register_write = adm8211_eeprom_register_write
95 };
96
97 if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
98 /* 256 * 16-bit = 512 bytes */
99 eeprom.width = PCI_EEPROM_WIDTH_93C66;
100 words = 256;
101 } else {
102 /* 64 * 16-bit = 128 bytes */
103 eeprom.width = PCI_EEPROM_WIDTH_93C46;
104 words = 64;
105 }
106
107 priv->eeprom_len = words * 2;
108 priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
109 if (!priv->eeprom)
110 return -ENOMEM;
111
112 eeprom_93cx6_multiread(&eeprom, 0, (__le16 __force *)priv->eeprom, words);
113
114 cr49 = le16_to_cpu(priv->eeprom->cr49);
115 priv->rf_type = (cr49 >> 3) & 0x7;
116 switch (priv->rf_type) {
117 case ADM8211_TYPE_INTERSIL:
118 case ADM8211_TYPE_RFMD:
119 case ADM8211_TYPE_MARVEL:
120 case ADM8211_TYPE_AIROHA:
121 case ADM8211_TYPE_ADMTEK:
122 break;
123
124 default:
125 if (priv->revid < ADM8211_REV_CA)
126 priv->rf_type = ADM8211_TYPE_RFMD;
127 else
128 priv->rf_type = ADM8211_TYPE_AIROHA;
129
130 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
131 pci_name(priv->pdev), (cr49 >> 3) & 0x7);
132 }
133
134 priv->bbp_type = cr49 & 0x7;
135 switch (priv->bbp_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 default:
143 if (priv->revid < ADM8211_REV_CA)
144 priv->bbp_type = ADM8211_TYPE_RFMD;
145 else
146 priv->bbp_type = ADM8211_TYPE_ADMTEK;
147
148 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
149 pci_name(priv->pdev), cr49 >> 3);
150 }
151
152 if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
153 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
154 pci_name(priv->pdev), priv->eeprom->country_code);
155
156 chan_range = cranges[2];
157 } else
158 chan_range = cranges[priv->eeprom->country_code];
159
160 printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
161 pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
162
163 priv->modes[0].num_channels = chan_range.max - chan_range.min + 1;
164 priv->modes[0].channels = priv->channels;
165
166 memcpy(priv->channels, adm8211_channels, sizeof(adm8211_channels));
167
168 for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
169 if (i >= chan_range.min && i <= chan_range.max)
170 priv->channels[i - 1].flag =
171 IEEE80211_CHAN_W_SCAN |
172 IEEE80211_CHAN_W_ACTIVE_SCAN |
173 IEEE80211_CHAN_W_IBSS;
174
175 switch (priv->eeprom->specific_bbptype) {
176 case ADM8211_BBP_RFMD3000:
177 case ADM8211_BBP_RFMD3002:
178 case ADM8211_BBP_ADM8011:
179 priv->specific_bbptype = priv->eeprom->specific_bbptype;
180 break;
181
182 default:
183 if (priv->revid < ADM8211_REV_CA)
184 priv->specific_bbptype = ADM8211_BBP_RFMD3000;
185 else
186 priv->specific_bbptype = ADM8211_BBP_ADM8011;
187
188 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
189 pci_name(priv->pdev), priv->eeprom->specific_bbptype);
190 }
191
192 switch (priv->eeprom->specific_rftype) {
193 case ADM8211_RFMD2948:
194 case ADM8211_RFMD2958:
195 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
196 case ADM8211_MAX2820:
197 case ADM8211_AL2210L:
198 priv->transceiver_type = priv->eeprom->specific_rftype;
199 break;
200
201 default:
202 if (priv->revid == ADM8211_REV_BA)
203 priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
204 else if (priv->revid == ADM8211_REV_CA)
205 priv->transceiver_type = ADM8211_AL2210L;
206 else if (priv->revid == ADM8211_REV_AB)
207 priv->transceiver_type = ADM8211_RFMD2948;
208
209 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
210 pci_name(priv->pdev), priv->eeprom->specific_rftype);
211
212 break;
213 }
214
215 printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
216 "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
217 priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
218
219 return 0;
220}
221
222static inline void adm8211_write_sram(struct ieee80211_hw *dev,
223 u32 addr, u32 data)
224{
225 struct adm8211_priv *priv = dev->priv;
226
227 ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
228 (priv->revid < ADM8211_REV_BA ?
229 0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
230 ADM8211_CSR_READ(WEPCTL);
231 msleep(1);
232
233 ADM8211_CSR_WRITE(WESK, data);
234 ADM8211_CSR_READ(WESK);
235 msleep(1);
236}
237
238static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
239 unsigned int addr, u8 *buf,
240 unsigned int len)
241{
242 struct adm8211_priv *priv = dev->priv;
243 u32 reg = ADM8211_CSR_READ(WEPCTL);
244 unsigned int i;
245
246 if (priv->revid < ADM8211_REV_BA) {
247 for (i = 0; i < len; i += 2) {
248 u16 val = buf[i] | (buf[i + 1] << 8);
249 adm8211_write_sram(dev, addr + i / 2, val);
250 }
251 } else {
252 for (i = 0; i < len; i += 4) {
253 u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
254 (buf[i + 2] << 16) | (buf[i + 3] << 24);
255 adm8211_write_sram(dev, addr + i / 4, val);
256 }
257 }
258
259 ADM8211_CSR_WRITE(WEPCTL, reg);
260}
261
262static void adm8211_clear_sram(struct ieee80211_hw *dev)
263{
264 struct adm8211_priv *priv = dev->priv;
265 u32 reg = ADM8211_CSR_READ(WEPCTL);
266 unsigned int addr;
267
268 for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
269 adm8211_write_sram(dev, addr, 0);
270
271 ADM8211_CSR_WRITE(WEPCTL, reg);
272}
273
274static int adm8211_get_stats(struct ieee80211_hw *dev,
275 struct ieee80211_low_level_stats *stats)
276{
277 struct adm8211_priv *priv = dev->priv;
278
279 memcpy(stats, &priv->stats, sizeof(*stats));
280
281 return 0;
282}
283
284static void adm8211_set_rx_mode(struct ieee80211_hw *dev,
285 unsigned short flags, int mc_count)
286{
287 struct adm8211_priv *priv = dev->priv;
288 unsigned int bit_nr;
289 u32 mc_filter[2];
290 struct dev_mc_list *mclist;
291 void *tmp;
292
293 if (flags & IFF_PROMISC) {
294 priv->nar |= ADM8211_NAR_PR;
295 priv->nar &= ~ADM8211_NAR_MM;
296 mc_filter[1] = mc_filter[0] = ~0;
297 } else if ((flags & IFF_ALLMULTI) || (mc_count > -1)) {
298 priv->nar &= ~ADM8211_NAR_PR;
299 priv->nar |= ADM8211_NAR_MM;
300 mc_filter[1] = mc_filter[0] = ~0;
301 } else {
302 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
303 mc_filter[1] = mc_filter[0] = 0;
304 mclist = NULL;
305 while ((mclist = ieee80211_get_mc_list_item(dev, mclist, &tmp))) {
306 bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
307
308 bit_nr &= 0x3F;
309 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
310 }
311 }
312
313 ADM8211_IDLE_RX();
314
315 ADM8211_CSR_WRITE(MAR0, mc_filter[0]);
316 ADM8211_CSR_WRITE(MAR1, mc_filter[1]);
317 ADM8211_CSR_READ(NAR);
318
319 if (flags & IFF_PROMISC)
320 dev->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
321 else
322 dev->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
323
324 ADM8211_RESTORE();
325}
326
327static int adm8211_get_tx_stats(struct ieee80211_hw *dev,
328 struct ieee80211_tx_queue_stats *stats)
329{
330 struct adm8211_priv *priv = dev->priv;
331 struct ieee80211_tx_queue_stats_data *data = &stats->data[0];
332
333 data->len = priv->cur_tx - priv->dirty_tx;
334 data->limit = priv->tx_ring_size - 2;
335 data->count = priv->dirty_tx;
336
337 return 0;
338}
339
340static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
341{
342 struct adm8211_priv *priv = dev->priv;
343 unsigned int dirty_tx;
344
345 spin_lock(&priv->lock);
346
347 for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
348 unsigned int entry = dirty_tx % priv->tx_ring_size;
349 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
350 struct adm8211_tx_ring_info *info;
351 struct sk_buff *skb;
352
353 if (status & TDES0_CONTROL_OWN ||
354 !(status & TDES0_CONTROL_DONE))
355 break;
356
357 info = &priv->tx_buffers[entry];
358 skb = info->skb;
359
360 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
361
362 pci_unmap_single(priv->pdev, info->mapping,
363 info->skb->len, PCI_DMA_TODEVICE);
364
365 if (info->tx_control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) {
366 struct ieee80211_tx_status tx_status = {{0}};
367 struct ieee80211_hdr *hdr;
368 size_t hdrlen = info->hdrlen;
369
370 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
371 hdr = (struct ieee80211_hdr *)skb_push(skb, hdrlen);
372 memcpy(hdr, skb->cb, hdrlen);
373 memcpy(&tx_status.control, &info->tx_control,
374 sizeof(tx_status.control));
375 if (!(status & TDES0_STATUS_ES))
376 tx_status.flags |= IEEE80211_TX_STATUS_ACK;
377 ieee80211_tx_status_irqsafe(dev, skb, &tx_status);
378 } else
379 dev_kfree_skb_irq(skb);
380 info->skb = NULL;
381 }
382
383 if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
384 ieee80211_wake_queue(dev, 0);
385
386 priv->dirty_tx = dirty_tx;
387 spin_unlock(&priv->lock);
388}
389
390
391static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
392{
393 struct adm8211_priv *priv = dev->priv;
394 unsigned int entry = priv->cur_rx % priv->rx_ring_size;
395 u32 status;
396 unsigned int pktlen;
397 struct sk_buff *skb, *newskb;
398 unsigned int limit = priv->rx_ring_size;
399 static const u8 rate_tbl[] = {10, 20, 55, 110, 220};
400 u8 rssi, rate;
401
402 while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
403 if (!limit--)
404 break;
405
406 status = le32_to_cpu(priv->rx_ring[entry].status);
407 rate = (status & RDES0_STATUS_RXDR) >> 12;
408 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
409 RDES1_STATUS_RSSI;
410
411 pktlen = status & RDES0_STATUS_FL;
412 if (pktlen > RX_PKT_SIZE) {
413 if (net_ratelimit())
414 printk(KERN_DEBUG "%s: frame too long (%d)\n",
415 wiphy_name(dev->wiphy), pktlen);
416 pktlen = RX_PKT_SIZE;
417 }
418
419 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
420 skb = NULL; /* old buffer will be reused */
421 /* TODO: update RX error stats */
422 /* TODO: check RDES0_STATUS_CRC*E */
423 } else if (pktlen < RX_COPY_BREAK) {
424 skb = dev_alloc_skb(pktlen);
425 if (skb) {
426 pci_dma_sync_single_for_cpu(
427 priv->pdev,
428 priv->rx_buffers[entry].mapping,
429 pktlen, PCI_DMA_FROMDEVICE);
430 memcpy(skb_put(skb, pktlen),
431 skb_tail_pointer(priv->rx_buffers[entry].skb),
432 pktlen);
433 pci_dma_sync_single_for_device(
434 priv->pdev,
435 priv->rx_buffers[entry].mapping,
436 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
437 }
438 } else {
439 newskb = dev_alloc_skb(RX_PKT_SIZE);
440 if (newskb) {
441 skb = priv->rx_buffers[entry].skb;
442 skb_put(skb, pktlen);
443 pci_unmap_single(
444 priv->pdev,
445 priv->rx_buffers[entry].mapping,
446 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
447 priv->rx_buffers[entry].skb = newskb;
448 priv->rx_buffers[entry].mapping =
449 pci_map_single(priv->pdev,
450 skb_tail_pointer(newskb),
451 RX_PKT_SIZE,
452 PCI_DMA_FROMDEVICE);
453 } else {
454 skb = NULL;
455 /* TODO: update rx dropped stats */
456 }
457
458 priv->rx_ring[entry].buffer1 =
459 cpu_to_le32(priv->rx_buffers[entry].mapping);
460 }
461
462 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
463 RDES0_STATUS_SQL);
464 priv->rx_ring[entry].length =
465 cpu_to_le32(RX_PKT_SIZE |
466 (entry == priv->rx_ring_size - 1 ?
467 RDES1_CONTROL_RER : 0));
468
469 if (skb) {
470 struct ieee80211_rx_status rx_status = {0};
471
472 if (priv->revid < ADM8211_REV_CA)
473 rx_status.ssi = rssi;
474 else
475 rx_status.ssi = 100 - rssi;
476
477 if (rate <= 4)
478 rx_status.rate = rate_tbl[rate];
479
480 rx_status.channel = priv->channel;
481 rx_status.freq = adm8211_channels[priv->channel - 1].freq;
482 rx_status.phymode = MODE_IEEE80211B;
483
484 ieee80211_rx_irqsafe(dev, skb, &rx_status);
485 }
486
487 entry = (++priv->cur_rx) % priv->rx_ring_size;
488 }
489
490 /* TODO: check LPC and update stats? */
491}
492
493
494static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
495{
496#define ADM8211_INT(x) \
497do { \
498 if (unlikely(stsr & ADM8211_STSR_ ## x)) \
499 printk(KERN_DEBUG "%s: " #x "\n", wiphy_name(dev->wiphy)); \
500} while (0)
501
502 struct ieee80211_hw *dev = dev_id;
503 struct adm8211_priv *priv = dev->priv;
504 unsigned int count = 0;
505 u32 stsr;
506
507 do {
508 stsr = ADM8211_CSR_READ(STSR);
509 ADM8211_CSR_WRITE(STSR, stsr);
510 if (stsr == 0xffffffff)
511 return IRQ_HANDLED;
512
513 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
514 break;
515
516 if (stsr & ADM8211_STSR_RCI)
517 adm8211_interrupt_rci(dev);
518 if (stsr & ADM8211_STSR_TCI)
519 adm8211_interrupt_tci(dev);
520
521 /*ADM8211_INT(LinkOn);*/
522 /*ADM8211_INT(LinkOff);*/
523
524 ADM8211_INT(PCF);
525 ADM8211_INT(BCNTC);
526 ADM8211_INT(GPINT);
527 ADM8211_INT(ATIMTC);
528 ADM8211_INT(TSFTF);
529 ADM8211_INT(TSCZ);
530 ADM8211_INT(SQL);
531 ADM8211_INT(WEPTD);
532 ADM8211_INT(ATIME);
533 /*ADM8211_INT(TBTT);*/
534 ADM8211_INT(TEIS);
535 ADM8211_INT(FBE);
536 ADM8211_INT(REIS);
537 ADM8211_INT(GPTT);
538 ADM8211_INT(RPS);
539 ADM8211_INT(RDU);
540 ADM8211_INT(TUF);
541 /*ADM8211_INT(TRT);*/
542 /*ADM8211_INT(TLT);*/
543 /*ADM8211_INT(TDU);*/
544 ADM8211_INT(TPS);
545
546 } while (count++ < 20);
547
548 return IRQ_RETVAL(count);
549
550#undef ADM8211_INT
551}
552
553#define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
554static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev, \
555 u16 addr, u32 value) { \
556 struct adm8211_priv *priv = dev->priv; \
557 unsigned int i; \
558 u32 reg, bitbuf; \
559 \
560 value &= v_mask; \
561 addr &= a_mask; \
562 bitbuf = (value << v_shift) | (addr << a_shift); \
563 \
564 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1); \
565 ADM8211_CSR_READ(SYNRF); \
566 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0); \
567 ADM8211_CSR_READ(SYNRF); \
568 \
569 if (prewrite) { \
570 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0); \
571 ADM8211_CSR_READ(SYNRF); \
572 } \
573 \
574 for (i = 0; i <= bits; i++) { \
575 if (bitbuf & (1 << (bits - i))) \
576 reg = ADM8211_SYNRF_WRITE_SYNDATA_1; \
577 else \
578 reg = ADM8211_SYNRF_WRITE_SYNDATA_0; \
579 \
580 ADM8211_CSR_WRITE(SYNRF, reg); \
581 ADM8211_CSR_READ(SYNRF); \
582 \
583 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
584 ADM8211_CSR_READ(SYNRF); \
585 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
586 ADM8211_CSR_READ(SYNRF); \
587 } \
588 \
589 if (postwrite == 1) { \
590 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0); \
591 ADM8211_CSR_READ(SYNRF); \
592 } \
593 if (postwrite == 2) { \
594 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1); \
595 ADM8211_CSR_READ(SYNRF); \
596 } \
597 \
598 ADM8211_CSR_WRITE(SYNRF, 0); \
599 ADM8211_CSR_READ(SYNRF); \
600}
601
602WRITE_SYN(max2820, 0x00FFF, 0, 0x0F, 12, 15, 1, 1)
603WRITE_SYN(al2210l, 0xFFFFF, 4, 0x0F, 0, 23, 1, 1)
604WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
605WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F, 0, 21, 0, 2)
606
607#undef WRITE_SYN
608
609static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
610{
611 struct adm8211_priv *priv = dev->priv;
612 unsigned int timeout;
613 u32 reg;
614
615 timeout = 10;
616 while (timeout > 0) {
617 reg = ADM8211_CSR_READ(BBPCTL);
618 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
619 break;
620 timeout--;
621 msleep(2);
622 }
623
624 if (timeout == 0) {
625 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
626 " prewrite (reg=0x%08x)\n",
627 wiphy_name(dev->wiphy), addr, data, reg);
628 return -ETIMEDOUT;
629 }
630
631 switch (priv->bbp_type) {
632 case ADM8211_TYPE_INTERSIL:
633 reg = ADM8211_BBPCTL_MMISEL; /* three wire interface */
634 break;
635 case ADM8211_TYPE_RFMD:
636 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
637 (0x01 << 18);
638 break;
639 case ADM8211_TYPE_ADMTEK:
640 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
641 (0x05 << 18);
642 break;
643 }
644 reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
645
646 ADM8211_CSR_WRITE(BBPCTL, reg);
647
648 timeout = 10;
649 while (timeout > 0) {
650 reg = ADM8211_CSR_READ(BBPCTL);
651 if (!(reg & ADM8211_BBPCTL_WR))
652 break;
653 timeout--;
654 msleep(2);
655 }
656
657 if (timeout == 0) {
658 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
659 ~ADM8211_BBPCTL_WR);
660 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
661 " postwrite (reg=0x%08x)\n",
662 wiphy_name(dev->wiphy), addr, data, reg);
663 return -ETIMEDOUT;
664 }
665
666 return 0;
667}
668
669static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
670{
671 static const u32 adm8211_rfmd2958_reg5[] =
672 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
673 0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
674 static const u32 adm8211_rfmd2958_reg6[] =
675 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
676 0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
677
678 struct adm8211_priv *priv = dev->priv;
679 u8 ant_power = priv->ant_power > 0x3F ?
680 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
681 u8 tx_power = priv->tx_power > 0x3F ?
682 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
683 u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
684 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
685 u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
686 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
687 u32 reg;
688
689 ADM8211_IDLE();
690
691 /* Program synthesizer to new channel */
692 switch (priv->transceiver_type) {
693 case ADM8211_RFMD2958:
694 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
695 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
696 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
697
698 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
699 adm8211_rfmd2958_reg5[chan - 1]);
700 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
701 adm8211_rfmd2958_reg6[chan - 1]);
702 break;
703
704 case ADM8211_RFMD2948:
705 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
706 SI4126_MAIN_XINDIV2);
707 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
708 SI4126_POWERDOWN_PDIB |
709 SI4126_POWERDOWN_PDRB);
710 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
711 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
712 (chan == 14 ?
713 2110 : (2033 + (chan * 5))));
714 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
715 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
716 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
717 break;
718
719 case ADM8211_MAX2820:
720 adm8211_rf_write_syn_max2820(dev, 0x3,
721 (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
722 break;
723
724 case ADM8211_AL2210L:
725 adm8211_rf_write_syn_al2210l(dev, 0x0,
726 (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
727 break;
728
729 default:
730 printk(KERN_DEBUG "%s: unsupported transceiver type %d\n",
731 wiphy_name(dev->wiphy), priv->transceiver_type);
732 break;
733 }
734
735 /* write BBP regs */
736 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
737
738 /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
739 /* TODO: remove if SMC 2635W doesn't need this */
740 if (priv->transceiver_type == ADM8211_RFMD2948) {
741 reg = ADM8211_CSR_READ(GPIO);
742 reg &= 0xfffc0000;
743 reg |= ADM8211_CSR_GPIO_EN0;
744 if (chan != 14)
745 reg |= ADM8211_CSR_GPIO_O0;
746 ADM8211_CSR_WRITE(GPIO, reg);
747 }
748
749 if (priv->transceiver_type == ADM8211_RFMD2958) {
750 /* set PCNT2 */
751 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
752 /* set PCNT1 P_DESIRED/MID_BIAS */
753 reg = le16_to_cpu(priv->eeprom->cr49);
754 reg >>= 13;
755 reg <<= 15;
756 reg |= ant_power << 9;
757 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
758 /* set TXRX TX_GAIN */
759 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
760 (priv->revid < ADM8211_REV_CA ? tx_power : 0));
761 } else {
762 reg = ADM8211_CSR_READ(PLCPHD);
763 reg &= 0xff00ffff;
764 reg |= tx_power << 18;
765 ADM8211_CSR_WRITE(PLCPHD, reg);
766 }
767
768 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
769 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
770 ADM8211_CSR_READ(SYNRF);
771 msleep(30);
772
773 /* RF3000 BBP */
774 if (priv->transceiver_type != ADM8211_RFMD2958)
775 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
776 tx_power<<2);
777 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
778 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
779 adm8211_write_bbp(dev, 0x1c, priv->revid == ADM8211_REV_BA ?
780 priv->eeprom->cr28 : 0);
781 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
782
783 ADM8211_CSR_WRITE(SYNRF, 0);
784
785 /* Nothing to do for ADMtek BBP */
786 } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
787 printk(KERN_DEBUG "%s: unsupported BBP type %d\n",
788 wiphy_name(dev->wiphy), priv->bbp_type);
789
790 ADM8211_RESTORE();
791
792 /* update current channel for adhoc (and maybe AP mode) */
793 reg = ADM8211_CSR_READ(CAP0);
794 reg &= ~0xF;
795 reg |= chan;
796 ADM8211_CSR_WRITE(CAP0, reg);
797
798 return 0;
799}
800
801static void adm8211_update_mode(struct ieee80211_hw *dev)
802{
803 struct adm8211_priv *priv = dev->priv;
804
805 ADM8211_IDLE();
806
807 priv->soft_rx_crc = 0;
808 switch (priv->mode) {
809 case IEEE80211_IF_TYPE_STA:
810 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
811 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
812 break;
813 case IEEE80211_IF_TYPE_IBSS:
814 priv->nar &= ~ADM8211_NAR_PR;
815 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
816
817 /* don't trust the error bits on rev 0x20 and up in adhoc */
818 if (priv->revid >= ADM8211_REV_BA)
819 priv->soft_rx_crc = 1;
820 break;
821 case IEEE80211_IF_TYPE_MNTR:
822 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
823 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
824 break;
825 }
826
827 ADM8211_RESTORE();
828}
829
830static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
831{
832 struct adm8211_priv *priv = dev->priv;
833
834 switch (priv->transceiver_type) {
835 case ADM8211_RFMD2958:
836 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
837 /* comments taken from ADMtek vendor driver */
838
839 /* Reset RF2958 after power on */
840 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
841 /* Initialize RF VCO Core Bias to maximum */
842 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
843 /* Initialize IF PLL */
844 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
845 /* Initialize IF PLL Coarse Tuning */
846 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
847 /* Initialize RF PLL */
848 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
849 /* Initialize RF PLL Coarse Tuning */
850 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
851 /* Initialize TX gain and filter BW (R9) */
852 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
853 (priv->transceiver_type == ADM8211_RFMD2958 ?
854 0x10050 : 0x00050));
855 /* Initialize CAL register */
856 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
857 break;
858
859 case ADM8211_MAX2820:
860 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
861 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
862 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
863 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
864 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
865 break;
866
867 case ADM8211_AL2210L:
868 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
869 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
870 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
871 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
872 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
873 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
874 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
875 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
876 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
877 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
878 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
879 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
880 break;
881
882 case ADM8211_RFMD2948:
883 default:
884 break;
885 }
886}
887
888static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
889{
890 struct adm8211_priv *priv = dev->priv;
891 u32 reg;
892
893 /* write addresses */
894 if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
895 ADM8211_CSR_WRITE(MMIWA, 0x100E0C0A);
896 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
897 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
898 } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
899 priv->bbp_type == ADM8211_TYPE_ADMTEK) {
900 /* check specific BBP type */
901 switch (priv->specific_bbptype) {
902 case ADM8211_BBP_RFMD3000:
903 case ADM8211_BBP_RFMD3002:
904 ADM8211_CSR_WRITE(MMIWA, 0x00009101);
905 ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
906 break;
907
908 case ADM8211_BBP_ADM8011:
909 ADM8211_CSR_WRITE(MMIWA, 0x00008903);
910 ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
911
912 reg = ADM8211_CSR_READ(BBPCTL);
913 reg &= ~ADM8211_BBPCTL_TYPE;
914 reg |= 0x5 << 18;
915 ADM8211_CSR_WRITE(BBPCTL, reg);
916 break;
917 }
918
919 switch (priv->revid) {
920 case ADM8211_REV_CA:
921 if (priv->transceiver_type == ADM8211_RFMD2958 ||
922 priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
923 priv->transceiver_type == ADM8211_RFMD2948)
924 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
925 else if (priv->transceiver_type == ADM8211_MAX2820 ||
926 priv->transceiver_type == ADM8211_AL2210L)
927 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
928 break;
929
930 case ADM8211_REV_BA:
931 reg = ADM8211_CSR_READ(MMIRD1);
932 reg &= 0x0000FFFF;
933 reg |= 0x7e100000;
934 ADM8211_CSR_WRITE(MMIRD1, reg);
935 break;
936
937 case ADM8211_REV_AB:
938 case ADM8211_REV_AF:
939 default:
940 ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
941 break;
942 }
943
944 /* For RFMD */
945 ADM8211_CSR_WRITE(MACTEST, 0x800);
946 }
947
948 adm8211_hw_init_syn(dev);
949
950 /* Set RF Power control IF pin to PE1+PHYRST# */
951 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
952 ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
953 ADM8211_CSR_READ(SYNRF);
954 msleep(20);
955
956 /* write BBP regs */
957 if (priv->bbp_type == ADM8211_TYPE_RFMD) {
958 /* RF3000 BBP */
959 /* another set:
960 * 11: c8
961 * 14: 14
962 * 15: 50 (chan 1..13; chan 14: d0)
963 * 1c: 00
964 * 1d: 84
965 */
966 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
967 /* antenna selection: diversity */
968 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
969 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
970 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
971 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
972
973 if (priv->eeprom->major_version < 2) {
974 adm8211_write_bbp(dev, 0x1c, 0x00);
975 adm8211_write_bbp(dev, 0x1d, 0x80);
976 } else {
977 if (priv->revid == ADM8211_REV_BA)
978 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
979 else
980 adm8211_write_bbp(dev, 0x1c, 0x00);
981
982 adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
983 }
984 } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
985 /* reset baseband */
986 adm8211_write_bbp(dev, 0x00, 0xFF);
987 /* antenna selection: diversity */
988 adm8211_write_bbp(dev, 0x07, 0x0A);
989
990 /* TODO: find documentation for this */
991 switch (priv->transceiver_type) {
992 case ADM8211_RFMD2958:
993 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
994 adm8211_write_bbp(dev, 0x00, 0x00);
995 adm8211_write_bbp(dev, 0x01, 0x00);
996 adm8211_write_bbp(dev, 0x02, 0x00);
997 adm8211_write_bbp(dev, 0x03, 0x00);
998 adm8211_write_bbp(dev, 0x06, 0x0f);
999 adm8211_write_bbp(dev, 0x09, 0x00);
1000 adm8211_write_bbp(dev, 0x0a, 0x00);
1001 adm8211_write_bbp(dev, 0x0b, 0x00);
1002 adm8211_write_bbp(dev, 0x0c, 0x00);
1003 adm8211_write_bbp(dev, 0x0f, 0xAA);
1004 adm8211_write_bbp(dev, 0x10, 0x8c);
1005 adm8211_write_bbp(dev, 0x11, 0x43);
1006 adm8211_write_bbp(dev, 0x18, 0x40);
1007 adm8211_write_bbp(dev, 0x20, 0x23);
1008 adm8211_write_bbp(dev, 0x21, 0x02);
1009 adm8211_write_bbp(dev, 0x22, 0x28);
1010 adm8211_write_bbp(dev, 0x23, 0x30);
1011 adm8211_write_bbp(dev, 0x24, 0x2d);
1012 adm8211_write_bbp(dev, 0x28, 0x35);
1013 adm8211_write_bbp(dev, 0x2a, 0x8c);
1014 adm8211_write_bbp(dev, 0x2b, 0x81);
1015 adm8211_write_bbp(dev, 0x2c, 0x44);
1016 adm8211_write_bbp(dev, 0x2d, 0x0A);
1017 adm8211_write_bbp(dev, 0x29, 0x40);
1018 adm8211_write_bbp(dev, 0x60, 0x08);
1019 adm8211_write_bbp(dev, 0x64, 0x01);
1020 break;
1021
1022 case ADM8211_MAX2820:
1023 adm8211_write_bbp(dev, 0x00, 0x00);
1024 adm8211_write_bbp(dev, 0x01, 0x00);
1025 adm8211_write_bbp(dev, 0x02, 0x00);
1026 adm8211_write_bbp(dev, 0x03, 0x00);
1027 adm8211_write_bbp(dev, 0x06, 0x0f);
1028 adm8211_write_bbp(dev, 0x09, 0x05);
1029 adm8211_write_bbp(dev, 0x0a, 0x02);
1030 adm8211_write_bbp(dev, 0x0b, 0x00);
1031 adm8211_write_bbp(dev, 0x0c, 0x0f);
1032 adm8211_write_bbp(dev, 0x0f, 0x55);
1033 adm8211_write_bbp(dev, 0x10, 0x8d);
1034 adm8211_write_bbp(dev, 0x11, 0x43);
1035 adm8211_write_bbp(dev, 0x18, 0x4a);
1036 adm8211_write_bbp(dev, 0x20, 0x20);
1037 adm8211_write_bbp(dev, 0x21, 0x02);
1038 adm8211_write_bbp(dev, 0x22, 0x23);
1039 adm8211_write_bbp(dev, 0x23, 0x30);
1040 adm8211_write_bbp(dev, 0x24, 0x2d);
1041 adm8211_write_bbp(dev, 0x2a, 0x8c);
1042 adm8211_write_bbp(dev, 0x2b, 0x81);
1043 adm8211_write_bbp(dev, 0x2c, 0x44);
1044 adm8211_write_bbp(dev, 0x29, 0x4a);
1045 adm8211_write_bbp(dev, 0x60, 0x2b);
1046 adm8211_write_bbp(dev, 0x64, 0x01);
1047 break;
1048
1049 case ADM8211_AL2210L:
1050 adm8211_write_bbp(dev, 0x00, 0x00);
1051 adm8211_write_bbp(dev, 0x01, 0x00);
1052 adm8211_write_bbp(dev, 0x02, 0x00);
1053 adm8211_write_bbp(dev, 0x03, 0x00);
1054 adm8211_write_bbp(dev, 0x06, 0x0f);
1055 adm8211_write_bbp(dev, 0x07, 0x05);
1056 adm8211_write_bbp(dev, 0x08, 0x03);
1057 adm8211_write_bbp(dev, 0x09, 0x00);
1058 adm8211_write_bbp(dev, 0x0a, 0x00);
1059 adm8211_write_bbp(dev, 0x0b, 0x00);
1060 adm8211_write_bbp(dev, 0x0c, 0x10);
1061 adm8211_write_bbp(dev, 0x0f, 0x55);
1062 adm8211_write_bbp(dev, 0x10, 0x8d);
1063 adm8211_write_bbp(dev, 0x11, 0x43);
1064 adm8211_write_bbp(dev, 0x18, 0x4a);
1065 adm8211_write_bbp(dev, 0x20, 0x20);
1066 adm8211_write_bbp(dev, 0x21, 0x02);
1067 adm8211_write_bbp(dev, 0x22, 0x23);
1068 adm8211_write_bbp(dev, 0x23, 0x30);
1069 adm8211_write_bbp(dev, 0x24, 0x2d);
1070 adm8211_write_bbp(dev, 0x2a, 0xaa);
1071 adm8211_write_bbp(dev, 0x2b, 0x81);
1072 adm8211_write_bbp(dev, 0x2c, 0x44);
1073 adm8211_write_bbp(dev, 0x29, 0xfa);
1074 adm8211_write_bbp(dev, 0x60, 0x2d);
1075 adm8211_write_bbp(dev, 0x64, 0x01);
1076 break;
1077
1078 case ADM8211_RFMD2948:
1079 break;
1080
1081 default:
1082 printk(KERN_DEBUG "%s: unsupported transceiver %d\n",
1083 wiphy_name(dev->wiphy), priv->transceiver_type);
1084 break;
1085 }
1086 } else
1087 printk(KERN_DEBUG "%s: unsupported BBP %d\n",
1088 wiphy_name(dev->wiphy), priv->bbp_type);
1089
1090 ADM8211_CSR_WRITE(SYNRF, 0);
1091
1092 /* Set RF CAL control source to MAC control */
1093 reg = ADM8211_CSR_READ(SYNCTL);
1094 reg |= ADM8211_SYNCTL_SELCAL;
1095 ADM8211_CSR_WRITE(SYNCTL, reg);
1096
1097 return 0;
1098}
1099
1100/* configures hw beacons/probe responses */
1101static int adm8211_set_rate(struct ieee80211_hw *dev)
1102{
1103 struct adm8211_priv *priv = dev->priv;
1104 u32 reg;
1105 int i = 0;
1106 u8 rate_buf[12] = {0};
1107
1108 /* write supported rates */
1109 if (priv->revid != ADM8211_REV_BA) {
1110 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1111 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1112 rate_buf[i + 1] = (adm8211_rates[i].rate / 5) | 0x80;
1113 } else {
1114 /* workaround for rev BA specific bug */
1115 rate_buf[0] = 0x04;
1116 rate_buf[1] = 0x82;
1117 rate_buf[2] = 0x04;
1118 rate_buf[3] = 0x0b;
1119 rate_buf[4] = 0x16;
1120 }
1121
1122 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1123 ARRAY_SIZE(adm8211_rates) + 1);
1124
1125 reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1126 reg |= 1 << 15; /* short preamble */
1127 reg |= 110 << 24;
1128 ADM8211_CSR_WRITE(PLCPHD, reg);
1129
1130 /* MTMLT = 512 TU (max TX MSDU lifetime)
1131 * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1132 * SRTYLIM = 224 (short retry limit, TX header value is default) */
1133 ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1134
1135 return 0;
1136}
1137
1138static void adm8211_hw_init(struct ieee80211_hw *dev)
1139{
1140 struct adm8211_priv *priv = dev->priv;
1141 u32 reg;
1142 u8 cline;
1143
1144 reg = le32_to_cpu(ADM8211_CSR_READ(PAR));
1145 reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1146 reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1147
1148 if (!pci_set_mwi(priv->pdev)) {
1149 reg |= 0x1 << 24;
1150 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1151
1152 switch (cline) {
1153 case 0x8: reg |= (0x1 << 14);
1154 break;
1155 case 0x16: reg |= (0x2 << 14);
1156 break;
1157 case 0x32: reg |= (0x3 << 14);
1158 break;
1159 default: reg |= (0x0 << 14);
1160 break;
1161 }
1162 }
1163
1164 ADM8211_CSR_WRITE(PAR, reg);
1165
1166 reg = ADM8211_CSR_READ(CSR_TEST1);
1167 reg &= ~(0xF << 28);
1168 reg |= (1 << 28) | (1 << 31);
1169 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1170
1171 /* lose link after 4 lost beacons */
1172 reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1173 ADM8211_CSR_WRITE(WCSR, reg);
1174
1175 /* Disable APM, enable receive FIFO threshold, and set drain receive
1176 * threshold to store-and-forward */
1177 reg = ADM8211_CSR_READ(CMDR);
1178 reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1179 reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1180 ADM8211_CSR_WRITE(CMDR, reg);
1181
1182 adm8211_set_rate(dev);
1183
1184 /* 4-bit values:
1185 * PWR1UP = 8 * 2 ms
1186 * PWR0PAPE = 8 us or 5 us
1187 * PWR1PAPE = 1 us or 3 us
1188 * PWR0TRSW = 5 us
1189 * PWR1TRSW = 12 us
1190 * PWR0PE2 = 13 us
1191 * PWR1PE2 = 1 us
1192 * PWR0TXPE = 8 or 6 */
1193 if (priv->revid < ADM8211_REV_CA)
1194 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1195 else
1196 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1197
1198 /* Enable store and forward for transmit */
1199 priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1200 ADM8211_CSR_WRITE(NAR, priv->nar);
1201
1202 /* Reset RF */
1203 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1204 ADM8211_CSR_READ(SYNRF);
1205 msleep(10);
1206 ADM8211_CSR_WRITE(SYNRF, 0);
1207 ADM8211_CSR_READ(SYNRF);
1208 msleep(5);
1209
1210 /* Set CFP Max Duration to 0x10 TU */
1211 reg = ADM8211_CSR_READ(CFPP);
1212 reg &= ~(0xffff << 8);
1213 reg |= 0x0010 << 8;
1214 ADM8211_CSR_WRITE(CFPP, reg);
1215
1216 /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1217 * TUCNT = 0x3ff - Tu counter 1024 us */
1218 ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1219
1220 /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1221 * DIFS=50 us, EIFS=100 us */
1222 if (priv->revid < ADM8211_REV_CA)
1223 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1224 (50 << 9) | 100);
1225 else
1226 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1227 (50 << 9) | 100);
1228
1229 /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1230 * RMRD = 2346 * 8 + 1 us (max RX duration) */
1231 ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1232
1233 /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1234 ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1235
1236 /* Initialize BBP (and SYN) */
1237 adm8211_hw_init_bbp(dev);
1238
1239 /* make sure interrupts are off */
1240 ADM8211_CSR_WRITE(IER, 0);
1241
1242 /* ACK interrupts */
1243 ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1244
1245 /* Setup WEP (turns it off for now) */
1246 reg = ADM8211_CSR_READ(MACTEST);
1247 reg &= ~(7 << 20);
1248 ADM8211_CSR_WRITE(MACTEST, reg);
1249
1250 reg = ADM8211_CSR_READ(WEPCTL);
1251 reg &= ~ADM8211_WEPCTL_WEPENABLE;
1252 reg |= ADM8211_WEPCTL_WEPRXBYP;
1253 ADM8211_CSR_WRITE(WEPCTL, reg);
1254
1255 /* Clear the missed-packet counter. */
1256 ADM8211_CSR_READ(LPC);
1257
1258 if (!priv->mac_addr)
1259 return;
1260
1261 /* set mac address */
1262 ADM8211_CSR_WRITE(PAR0, *(u32 *)priv->mac_addr);
1263 ADM8211_CSR_WRITE(PAR1, *(u16 *)&priv->mac_addr[4]);
1264}
1265
1266static int adm8211_hw_reset(struct ieee80211_hw *dev)
1267{
1268 struct adm8211_priv *priv = dev->priv;
1269 u32 reg, tmp;
1270 int timeout = 100;
1271
1272 /* Power-on issue */
1273 /* TODO: check if this is necessary */
1274 ADM8211_CSR_WRITE(FRCTL, 0);
1275
1276 /* Reset the chip */
1277 tmp = ADM8211_CSR_READ(PAR);
1278 ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1279
1280 while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1281 msleep(50);
1282
1283 if (timeout <= 0)
1284 return -ETIMEDOUT;
1285
1286 ADM8211_CSR_WRITE(PAR, tmp);
1287
1288 if (priv->revid == ADM8211_REV_BA &&
1289 (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1290 priv->transceiver_type == ADM8211_RFMD2958)) {
1291 reg = ADM8211_CSR_READ(CSR_TEST1);
1292 reg |= (1 << 4) | (1 << 5);
1293 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1294 } else if (priv->revid == ADM8211_REV_CA) {
1295 reg = ADM8211_CSR_READ(CSR_TEST1);
1296 reg &= ~((1 << 4) | (1 << 5));
1297 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1298 }
1299
1300 ADM8211_CSR_WRITE(FRCTL, 0);
1301
1302 reg = ADM8211_CSR_READ(CSR_TEST0);
1303 reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1304 ADM8211_CSR_WRITE(CSR_TEST0, reg);
1305
1306 adm8211_clear_sram(dev);
1307
1308 return 0;
1309}
1310
1311static u64 adm8211_get_tsft(struct ieee80211_hw *dev)
1312{
1313 struct adm8211_priv *priv = dev->priv;
1314 u32 tsftl;
1315 u64 tsft;
1316
1317 tsftl = ADM8211_CSR_READ(TSFTL);
1318 tsft = ADM8211_CSR_READ(TSFTH);
1319 tsft <<= 32;
1320 tsft |= tsftl;
1321
1322 return tsft;
1323}
1324
1325static void adm8211_set_interval(struct ieee80211_hw *dev,
1326 unsigned short bi, unsigned short li)
1327{
1328 struct adm8211_priv *priv = dev->priv;
1329 u32 reg;
1330
1331 /* BP (beacon interval) = data->beacon_interval
1332 * LI (listen interval) = data->listen_interval (in beacon intervals) */
1333 reg = (bi << 16) | li;
1334 ADM8211_CSR_WRITE(BPLI, reg);
1335}
1336
1337static void adm8211_set_bssid(struct ieee80211_hw *dev, u8 *bssid)
1338{
1339 struct adm8211_priv *priv = dev->priv;
1340 u32 reg;
1341
1342 reg = bssid[0] | (bssid[1] << 8) | (bssid[2] << 16) | (bssid[3] << 24);
1343 ADM8211_CSR_WRITE(BSSID0, reg);
1344 reg = ADM8211_CSR_READ(ABDA1);
1345 reg &= 0x0000ffff;
1346 reg |= (bssid[4] << 16) | (bssid[5] << 24);
1347 ADM8211_CSR_WRITE(ABDA1, reg);
1348}
1349
1350static int adm8211_set_ssid(struct ieee80211_hw *dev, u8 *ssid, size_t ssid_len)
1351{
1352 struct adm8211_priv *priv = dev->priv;
1353 u8 buf[36];
1354
1355 if (ssid_len > 32)
1356 return -EINVAL;
1357
1358 memset(buf, 0, sizeof(buf));
1359 buf[0] = ssid_len;
1360 memcpy(buf + 1, ssid, ssid_len);
1361 adm8211_write_sram_bytes(dev, ADM8211_SRAM_SSID, buf, 33);
1362 /* TODO: configure beacon for adhoc? */
1363 return 0;
1364}
1365
1366static int adm8211_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
1367{
1368 struct adm8211_priv *priv = dev->priv;
1369
1370 if (conf->channel != priv->channel) {
1371 priv->channel = conf->channel;
1372 adm8211_rf_set_channel(dev, priv->channel);
1373 }
1374
1375 return 0;
1376}
1377
1378static int adm8211_config_interface(struct ieee80211_hw *dev, int if_id,
1379 struct ieee80211_if_conf *conf)
1380{
1381 struct adm8211_priv *priv = dev->priv;
1382
1383 if (memcmp(conf->bssid, priv->bssid, ETH_ALEN)) {
1384 adm8211_set_bssid(dev, conf->bssid);
1385 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1386 }
1387
1388 if (conf->ssid_len != priv->ssid_len ||
1389 memcmp(conf->ssid, priv->ssid, conf->ssid_len)) {
1390 adm8211_set_ssid(dev, conf->ssid, conf->ssid_len);
1391 priv->ssid_len = conf->ssid_len;
1392 memcpy(priv->ssid, conf->ssid, conf->ssid_len);
1393 }
1394
1395 return 0;
1396}
1397
1398static int adm8211_add_interface(struct ieee80211_hw *dev,
1399 struct ieee80211_if_init_conf *conf)
1400{
1401 struct adm8211_priv *priv = dev->priv;
1402 /* NOTE: using IEEE80211_IF_TYPE_MGMT to indicate no mode selected */
1403 if (priv->mode != IEEE80211_IF_TYPE_MGMT)
1404 return -1;
1405
1406 switch (conf->type) {
1407 case IEEE80211_IF_TYPE_STA:
1408 case IEEE80211_IF_TYPE_MNTR:
1409 priv->mode = conf->type;
1410 break;
1411 default:
1412 return -EOPNOTSUPP;
1413 }
1414
1415 priv->mac_addr = conf->mac_addr;
1416
1417 return 0;
1418}
1419
1420static void adm8211_remove_interface(struct ieee80211_hw *dev,
1421 struct ieee80211_if_init_conf *conf)
1422{
1423 struct adm8211_priv *priv = dev->priv;
1424 priv->mode = IEEE80211_IF_TYPE_MGMT;
1425}
1426
1427static int adm8211_init_rings(struct ieee80211_hw *dev)
1428{
1429 struct adm8211_priv *priv = dev->priv;
1430 struct adm8211_desc *desc = NULL;
1431 struct adm8211_rx_ring_info *rx_info;
1432 struct adm8211_tx_ring_info *tx_info;
1433 unsigned int i;
1434
1435 for (i = 0; i < priv->rx_ring_size; i++) {
1436 desc = &priv->rx_ring[i];
1437 desc->status = 0;
1438 desc->length = cpu_to_le32(RX_PKT_SIZE);
1439 priv->rx_buffers[i].skb = NULL;
1440 }
1441 /* Mark the end of RX ring; hw returns to base address after this
1442 * descriptor */
1443 desc->length |= cpu_to_le32(RDES1_CONTROL_RER);
1444
1445 for (i = 0; i < priv->rx_ring_size; i++) {
1446 desc = &priv->rx_ring[i];
1447 rx_info = &priv->rx_buffers[i];
1448
1449 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE);
1450 if (rx_info->skb == NULL)
1451 break;
1452 rx_info->mapping = pci_map_single(priv->pdev,
1453 skb_tail_pointer(rx_info->skb),
1454 RX_PKT_SIZE,
1455 PCI_DMA_FROMDEVICE);
1456 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1457 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1458 }
1459
1460 /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1461 for (i = 0; i < priv->tx_ring_size; i++) {
1462 desc = &priv->tx_ring[i];
1463 tx_info = &priv->tx_buffers[i];
1464
1465 tx_info->skb = NULL;
1466 tx_info->mapping = 0;
1467 desc->status = 0;
1468 }
1469 desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1470
1471 priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1472 ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1473 ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1474
1475 return 0;
1476}
1477
1478static void adm8211_free_rings(struct ieee80211_hw *dev)
1479{
1480 struct adm8211_priv *priv = dev->priv;
1481 unsigned int i;
1482
1483 for (i = 0; i < priv->rx_ring_size; i++) {
1484 if (!priv->rx_buffers[i].skb)
1485 continue;
1486
1487 pci_unmap_single(
1488 priv->pdev,
1489 priv->rx_buffers[i].mapping,
1490 RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
1491
1492 dev_kfree_skb(priv->rx_buffers[i].skb);
1493 }
1494
1495 for (i = 0; i < priv->tx_ring_size; i++) {
1496 if (!priv->tx_buffers[i].skb)
1497 continue;
1498
1499 pci_unmap_single(priv->pdev,
1500 priv->tx_buffers[i].mapping,
1501 priv->tx_buffers[i].skb->len,
1502 PCI_DMA_TODEVICE);
1503
1504 dev_kfree_skb(priv->tx_buffers[i].skb);
1505 }
1506}
1507
1508static int adm8211_open(struct ieee80211_hw *dev)
1509{
1510 struct adm8211_priv *priv = dev->priv;
1511 int retval;
1512
1513 /* Power up MAC and RF chips */
1514 retval = adm8211_hw_reset(dev);
1515 if (retval) {
1516 printk(KERN_ERR "%s: hardware reset failed\n",
1517 wiphy_name(dev->wiphy));
1518 goto fail;
1519 }
1520
1521 retval = adm8211_init_rings(dev);
1522 if (retval) {
1523 printk(KERN_ERR "%s: failed to initialize rings\n",
1524 wiphy_name(dev->wiphy));
1525 goto fail;
1526 }
1527
1528 /* Init hardware */
1529 adm8211_hw_init(dev);
1530 adm8211_rf_set_channel(dev, priv->channel);
1531
1532 retval = request_irq(priv->pdev->irq, &adm8211_interrupt,
1533 IRQF_SHARED, "adm8211", dev);
1534 if (retval) {
1535 printk(KERN_ERR "%s: failed to register IRQ handler\n",
1536 wiphy_name(dev->wiphy));
1537 goto fail;
1538 }
1539
1540 ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1541 ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1542 ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1543 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 int adm8211_stop(struct ieee80211_hw *dev)
1554{
1555 struct adm8211_priv *priv = dev->priv;
1556
1557 priv->nar = 0;
1558 ADM8211_CSR_WRITE(NAR, 0);
1559 ADM8211_CSR_WRITE(IER, 0);
1560 ADM8211_CSR_READ(NAR);
1561
1562 free_irq(priv->pdev->irq, dev);
1563
1564 adm8211_free_rings(dev);
1565 return 0;
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 void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1622 u16 plcp_signal,
1623 struct ieee80211_tx_control *control,
1624 size_t hdrlen)
1625{
1626 struct adm8211_priv *priv = dev->priv;
1627 unsigned long flags;
1628 dma_addr_t mapping;
1629 unsigned int entry;
1630 u32 flag;
1631
1632 mapping = pci_map_single(priv->pdev, skb->data, skb->len,
1633 PCI_DMA_TODEVICE);
1634
1635 spin_lock_irqsave(&priv->lock, flags);
1636
1637 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1638 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1639 else
1640 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1641
1642 if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1643 ieee80211_stop_queue(dev, 0);
1644
1645 entry = priv->cur_tx % priv->tx_ring_size;
1646
1647 priv->tx_buffers[entry].skb = skb;
1648 priv->tx_buffers[entry].mapping = mapping;
1649 memcpy(&priv->tx_buffers[entry].tx_control, control, sizeof(*control));
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
1669/* Put adm8211_tx_hdr on skb and transmit */
1670static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
1671 struct ieee80211_tx_control *control)
1672{
1673 struct adm8211_tx_hdr *txhdr;
1674 u16 fc;
1675 size_t payload_len, hdrlen;
1676 int plcp, dur, len, plcp_signal, short_preamble;
1677 struct ieee80211_hdr *hdr;
1678
1679 if (control->tx_rate < 0) {
1680 short_preamble = 1;
1681 plcp_signal = -control->tx_rate;
1682 } else {
1683 short_preamble = 0;
1684 plcp_signal = control->tx_rate;
1685 }
1686
1687 hdr = (struct ieee80211_hdr *)skb->data;
1688 fc = le16_to_cpu(hdr->frame_control) & ~IEEE80211_FCTL_PROTECTED;
1689 hdrlen = ieee80211_get_hdrlen(fc);
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 = (struct adm8211_tx_hdr *) 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 if (fc & IEEE80211_FCTL_PROTECTED)
1704 len += 8;
1705
1706 txhdr->frag = cpu_to_le16(0x0FFF);
1707 adm8211_calc_durations(&dur, &plcp, payload_len,
1708 len, plcp_signal, short_preamble);
1709 txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1710 txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1711 txhdr->dur_frag_head = cpu_to_le16(dur);
1712 txhdr->dur_frag_tail = cpu_to_le16(dur);
1713
1714 txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1715
1716 if (short_preamble)
1717 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1718
1719 if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
1720 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1721
1722 if (fc & IEEE80211_FCTL_PROTECTED)
1723 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_WEP_ENGINE);
1724
1725 txhdr->retry_limit = control->retry_limit;
1726
1727 adm8211_tx_raw(dev, skb, plcp_signal, control, hdrlen);
1728
1729 return NETDEV_TX_OK;
1730}
1731
1732static 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 = (struct adm8211_desc *)(priv->rx_ring +
1759 priv->rx_ring_size);
1760 priv->tx_ring_dma = priv->rx_ring_dma +
1761 sizeof(struct adm8211_desc) * priv->rx_ring_size;
1762
1763 return 0;
1764}
1765
1766static const struct ieee80211_ops adm8211_ops = {
1767 .tx = adm8211_tx,
1768 .open = adm8211_open,
1769 .stop = adm8211_stop,
1770 .add_interface = adm8211_add_interface,
1771 .remove_interface = adm8211_remove_interface,
1772 .config = adm8211_config,
1773 .config_interface = adm8211_config_interface,
1774 .set_multicast_list = adm8211_set_rx_mode,
1775 .get_stats = adm8211_get_stats,
1776 .get_tx_stats = adm8211_get_tx_stats,
1777 .get_tsf = adm8211_get_tsft
1778};
1779
1780static int __devinit adm8211_probe(struct pci_dev *pdev,
1781 const struct pci_device_id *id)
1782{
1783 struct ieee80211_hw *dev;
1784 struct adm8211_priv *priv;
1785 unsigned long mem_addr, mem_len;
1786 unsigned int io_addr, io_len;
1787 int err;
1788 u32 reg;
1789 u8 perm_addr[ETH_ALEN];
1790
1791#ifndef MODULE
1792 static unsigned int cardidx;
1793 if (!cardidx++)
1794 printk(version);
1795#endif
1796
1797 err = pci_enable_device(pdev);
1798 if (err) {
1799 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1800 pci_name(pdev));
1801 return err;
1802 }
1803
1804 io_addr = pci_resource_start(pdev, 0);
1805 io_len = pci_resource_len(pdev, 0);
1806 mem_addr = pci_resource_start(pdev, 1);
1807 mem_len = pci_resource_len(pdev, 1);
1808 if (io_len < 256 || mem_len < 1024) {
1809 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1810 pci_name(pdev));
1811 goto err_disable_pdev;
1812 }
1813
1814
1815 /* check signature */
1816 pci_read_config_dword(pdev, 0x80 /* CR32 */, &reg);
1817 if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1818 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1819 pci_name(pdev), reg);
1820 goto err_disable_pdev;
1821 }
1822
1823 err = pci_request_regions(pdev, "adm8211");
1824 if (err) {
1825 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1826 pci_name(pdev));
1827 return err; /* someone else grabbed it? don't disable it */
1828 }
1829
1830 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) ||
1831 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
1832 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1833 pci_name(pdev));
1834 goto err_free_reg;
1835 }
1836
1837 pci_set_master(pdev);
1838
1839 dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1840 if (!dev) {
1841 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1842 pci_name(pdev));
1843 err = -ENOMEM;
1844 goto err_free_reg;
1845 }
1846 priv = dev->priv;
1847 priv->pdev = pdev;
1848
1849 spin_lock_init(&priv->lock);
1850
1851 SET_IEEE80211_DEV(dev, &pdev->dev);
1852
1853 pci_set_drvdata(pdev, dev);
1854
1855 priv->map = pci_iomap(pdev, 1, mem_len);
1856 if (!priv->map)
1857 priv->map = pci_iomap(pdev, 0, io_len);
1858
1859 if (!priv->map) {
1860 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1861 pci_name(pdev));
1862 goto err_free_dev;
1863 }
1864
1865 priv->rx_ring_size = rx_ring_size;
1866 priv->tx_ring_size = tx_ring_size;
1867
1868 if (adm8211_alloc_rings(dev)) {
1869 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1870 pci_name(pdev));
1871 goto err_iounmap;
1872 }
1873
1874 pci_read_config_byte(pdev, PCI_CLASS_REVISION, &priv->revid);
1875
1876 *(u32 *)perm_addr = le32_to_cpu((__force __le32)ADM8211_CSR_READ(PAR0));
1877 *(u16 *)&perm_addr[4] =
1878 le16_to_cpu((__force __le16)ADM8211_CSR_READ(PAR1) & 0xFFFF);
1879
1880 if (!is_valid_ether_addr(perm_addr)) {
1881 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1882 pci_name(pdev));
1883 random_ether_addr(perm_addr);
1884 }
1885 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1886
1887 dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1888 dev->flags = IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED;
1889 /* IEEE80211_HW_RX_INCLUDES_FCS in promisc mode */
1890
1891 dev->channel_change_time = 1000;
1892 dev->max_rssi = 100; /* FIXME: find better value */
1893
1894 priv->modes[0].mode = MODE_IEEE80211B;
1895 /* channel info filled in by adm8211_read_eeprom */
1896 memcpy(priv->rates, adm8211_rates, sizeof(adm8211_rates));
1897 priv->modes[0].num_rates = ARRAY_SIZE(adm8211_rates);
1898 priv->modes[0].rates = priv->rates;
1899
1900 dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1901
1902 priv->retry_limit = 3;
1903 priv->ant_power = 0x40;
1904 priv->tx_power = 0x40;
1905 priv->lpf_cutoff = 0xFF;
1906 priv->lnags_threshold = 0xFF;
1907 priv->mode = IEEE80211_IF_TYPE_MGMT;
1908
1909 /* Power-on issue. EEPROM won't read correctly without */
1910 if (priv->revid >= ADM8211_REV_BA) {
1911 ADM8211_CSR_WRITE(FRCTL, 0);
1912 ADM8211_CSR_READ(FRCTL);
1913 ADM8211_CSR_WRITE(FRCTL, 1);
1914 ADM8211_CSR_READ(FRCTL);
1915 msleep(100);
1916 }
1917
1918 err = adm8211_read_eeprom(dev);
1919 if (err) {
1920 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1921 pci_name(pdev));
1922 goto err_free_desc;
1923 }
1924
1925 priv->channel = priv->modes[0].channels[0].chan;
1926
1927 err = ieee80211_register_hwmode(dev, &priv->modes[0]);
1928 if (err) {
1929 printk(KERN_ERR "%s (adm8211): Can't register hwmode\n",
1930 pci_name(pdev));
1931 goto err_free_desc;
1932 }
1933
1934 err = ieee80211_register_hw(dev);
1935 if (err) {
1936 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1937 pci_name(pdev));
1938 goto err_free_desc;
1939 }
1940
1941 printk(KERN_INFO "%s: hwaddr " MAC_FMT ", Rev 0x%02x\n",
1942 wiphy_name(dev->wiphy), MAC_ARG(dev->wiphy->perm_addr),
1943 priv->revid);
1944
1945 return 0;
1946
1947 err_free_desc:
1948 pci_free_consistent(pdev,
1949 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1950 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1951 priv->rx_ring, priv->rx_ring_dma);
1952 kfree(priv->rx_buffers);
1953
1954 err_iounmap:
1955 pci_iounmap(pdev, priv->map);
1956
1957 err_free_dev:
1958 pci_set_drvdata(pdev, NULL);
1959 ieee80211_free_hw(dev);
1960
1961 err_free_reg:
1962 pci_release_regions(pdev);
1963
1964 err_disable_pdev:
1965 pci_disable_device(pdev);
1966 return err;
1967}
1968
1969
1970static void __devexit adm8211_remove(struct pci_dev *pdev)
1971{
1972 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1973 struct adm8211_priv *priv;
1974
1975 if (!dev)
1976 return;
1977
1978 ieee80211_unregister_hw(dev);
1979
1980 priv = dev->priv;
1981
1982 pci_free_consistent(pdev,
1983 sizeof(struct adm8211_desc) * priv->rx_ring_size +
1984 sizeof(struct adm8211_desc) * priv->tx_ring_size,
1985 priv->rx_ring, priv->rx_ring_dma);
1986
1987 kfree(priv->rx_buffers);
1988 kfree(priv->eeprom);
1989 pci_iounmap(pdev, priv->map);
1990 pci_release_regions(pdev);
1991 pci_disable_device(pdev);
1992 ieee80211_free_hw(dev);
1993}
1994
1995
1996#ifdef CONFIG_PM
1997static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
1998{
1999 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
2000 struct adm8211_priv *priv = dev->priv;
2001
2002 if (priv->mode != IEEE80211_IF_TYPE_MGMT) {
2003 ieee80211_stop_queues(dev);
2004 adm8211_stop(dev);
2005 }
2006
2007 pci_save_state(pdev);
2008 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2009 return 0;
2010}
2011
2012static int adm8211_resume(struct pci_dev *pdev)
2013{
2014 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
2015 struct adm8211_priv *priv = dev->priv;
2016
2017 pci_set_power_state(pdev, PCI_D0);
2018 pci_restore_state(pdev);
2019
2020 if (priv->mode != IEEE80211_IF_TYPE_MGMT) {
2021 adm8211_open(dev);
2022 ieee80211_start_queues(dev);
2023 }
2024
2025 return 0;
2026}
2027#endif /* CONFIG_PM */
2028
2029
2030MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
2031
2032/* TODO: implement enable_wake */
2033static struct pci_driver adm8211_driver = {
2034 .name = "adm8211",
2035 .id_table = adm8211_pci_id_table,
2036 .probe = adm8211_probe,
2037 .remove = __devexit_p(adm8211_remove),
2038#ifdef CONFIG_PM
2039 .suspend = adm8211_suspend,
2040 .resume = adm8211_resume,
2041#endif /* CONFIG_PM */
2042};
2043
2044
2045
2046static int __init adm8211_init(void)
2047{
2048#ifdef MODULE
2049 printk(version);
2050#endif
2051
2052 return pci_register_driver(&adm8211_driver);
2053}
2054
2055
2056static void __exit adm8211_exit(void)
2057{
2058 pci_unregister_driver(&adm8211_driver);
2059}
2060
2061
2062module_init(adm8211_init);
2063module_exit(adm8211_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-18 17:06:17 -0500