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Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac802...
[deliverable/linux.git] / drivers / net / wireless / rtl818x / rtl8180 / dev.c
1
2 /*
3 * Linux device driver for RTL8180 / RTL8185
4 *
5 * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
6 * Copyright 2007 Andrea Merello <andrea.merello@gmail.com>
7 *
8 * Based on the r8180 driver, which is:
9 * Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
10 *
11 * Thanks to Realtek for their support!
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 */
17
18 #include <linux/interrupt.h>
19 #include <linux/pci.h>
20 #include <linux/slab.h>
21 #include <linux/delay.h>
22 #include <linux/etherdevice.h>
23 #include <linux/eeprom_93cx6.h>
24 #include <linux/module.h>
25 #include <net/mac80211.h>
26
27 #include "rtl8180.h"
28 #include "rtl8225.h"
29 #include "sa2400.h"
30 #include "max2820.h"
31 #include "grf5101.h"
32
33 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
34 MODULE_AUTHOR("Andrea Merello <andrea.merello@gmail.com>");
35 MODULE_DESCRIPTION("RTL8180 / RTL8185 PCI wireless driver");
36 MODULE_LICENSE("GPL");
37
38 static DEFINE_PCI_DEVICE_TABLE(rtl8180_table) = {
39 /* rtl8185 */
40 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8185) },
41 { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x700f) },
42 { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x701f) },
43
44 /* rtl8180 */
45 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8180) },
46 { PCI_DEVICE(0x1799, 0x6001) },
47 { PCI_DEVICE(0x1799, 0x6020) },
48 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x3300) },
49 { PCI_DEVICE(0x1186, 0x3301) },
50 { PCI_DEVICE(0x1432, 0x7106) },
51 { }
52 };
53
54 MODULE_DEVICE_TABLE(pci, rtl8180_table);
55
56 static const struct ieee80211_rate rtl818x_rates[] = {
57 { .bitrate = 10, .hw_value = 0, },
58 { .bitrate = 20, .hw_value = 1, },
59 { .bitrate = 55, .hw_value = 2, },
60 { .bitrate = 110, .hw_value = 3, },
61 { .bitrate = 60, .hw_value = 4, },
62 { .bitrate = 90, .hw_value = 5, },
63 { .bitrate = 120, .hw_value = 6, },
64 { .bitrate = 180, .hw_value = 7, },
65 { .bitrate = 240, .hw_value = 8, },
66 { .bitrate = 360, .hw_value = 9, },
67 { .bitrate = 480, .hw_value = 10, },
68 { .bitrate = 540, .hw_value = 11, },
69 };
70
71 static const struct ieee80211_channel rtl818x_channels[] = {
72 { .center_freq = 2412 },
73 { .center_freq = 2417 },
74 { .center_freq = 2422 },
75 { .center_freq = 2427 },
76 { .center_freq = 2432 },
77 { .center_freq = 2437 },
78 { .center_freq = 2442 },
79 { .center_freq = 2447 },
80 { .center_freq = 2452 },
81 { .center_freq = 2457 },
82 { .center_freq = 2462 },
83 { .center_freq = 2467 },
84 { .center_freq = 2472 },
85 { .center_freq = 2484 },
86 };
87
88
89 void rtl8180_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
90 {
91 struct rtl8180_priv *priv = dev->priv;
92 int i = 10;
93 u32 buf;
94
95 buf = (data << 8) | addr;
96
97 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf | 0x80);
98 while (i--) {
99 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf);
100 if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF))
101 return;
102 }
103 }
104
105 static void rtl8180_handle_rx(struct ieee80211_hw *dev)
106 {
107 struct rtl8180_priv *priv = dev->priv;
108 unsigned int count = 32;
109 u8 signal, agc, sq;
110 dma_addr_t mapping;
111
112 while (count--) {
113 struct rtl8180_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
114 struct sk_buff *skb = priv->rx_buf[priv->rx_idx];
115 u32 flags = le32_to_cpu(entry->flags);
116
117 if (flags & RTL818X_RX_DESC_FLAG_OWN)
118 return;
119
120 if (unlikely(flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL |
121 RTL818X_RX_DESC_FLAG_FOF |
122 RTL818X_RX_DESC_FLAG_RX_ERR)))
123 goto done;
124 else {
125 u32 flags2 = le32_to_cpu(entry->flags2);
126 struct ieee80211_rx_status rx_status = {0};
127 struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_SIZE);
128
129 if (unlikely(!new_skb))
130 goto done;
131
132 mapping = pci_map_single(priv->pdev,
133 skb_tail_pointer(new_skb),
134 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
135
136 if (pci_dma_mapping_error(priv->pdev, mapping)) {
137 kfree_skb(new_skb);
138 dev_err(&priv->pdev->dev, "RX DMA map error\n");
139
140 goto done;
141 }
142
143 pci_unmap_single(priv->pdev,
144 *((dma_addr_t *)skb->cb),
145 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
146 skb_put(skb, flags & 0xFFF);
147
148 rx_status.antenna = (flags2 >> 15) & 1;
149 rx_status.rate_idx = (flags >> 20) & 0xF;
150 agc = (flags2 >> 17) & 0x7F;
151
152 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
153 if (rx_status.rate_idx > 3)
154 signal = 90 - clamp_t(u8, agc, 25, 90);
155 else
156 signal = 95 - clamp_t(u8, agc, 30, 95);
157 } else {
158 sq = flags2 & 0xff;
159 signal = priv->rf->calc_rssi(agc, sq);
160 }
161 rx_status.signal = signal;
162 rx_status.freq = dev->conf.chandef.chan->center_freq;
163 rx_status.band = dev->conf.chandef.chan->band;
164 rx_status.mactime = le64_to_cpu(entry->tsft);
165 rx_status.flag |= RX_FLAG_MACTIME_START;
166 if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
167 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
168
169 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
170 ieee80211_rx_irqsafe(dev, skb);
171
172 skb = new_skb;
173 priv->rx_buf[priv->rx_idx] = skb;
174 *((dma_addr_t *) skb->cb) = mapping;
175 }
176
177 done:
178 entry->rx_buf = cpu_to_le32(*((dma_addr_t *)skb->cb));
179 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
180 MAX_RX_SIZE);
181 if (priv->rx_idx == 31)
182 entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
183 priv->rx_idx = (priv->rx_idx + 1) % 32;
184 }
185 }
186
187 static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
188 {
189 struct rtl8180_priv *priv = dev->priv;
190 struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
191
192 while (skb_queue_len(&ring->queue)) {
193 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
194 struct sk_buff *skb;
195 struct ieee80211_tx_info *info;
196 u32 flags = le32_to_cpu(entry->flags);
197
198 if (flags & RTL818X_TX_DESC_FLAG_OWN)
199 return;
200
201 ring->idx = (ring->idx + 1) % ring->entries;
202 skb = __skb_dequeue(&ring->queue);
203 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
204 skb->len, PCI_DMA_TODEVICE);
205
206 info = IEEE80211_SKB_CB(skb);
207 ieee80211_tx_info_clear_status(info);
208
209 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
210 (flags & RTL818X_TX_DESC_FLAG_TX_OK))
211 info->flags |= IEEE80211_TX_STAT_ACK;
212
213 info->status.rates[0].count = (flags & 0xFF) + 1;
214 info->status.rates[1].idx = -1;
215
216 ieee80211_tx_status_irqsafe(dev, skb);
217 if (ring->entries - skb_queue_len(&ring->queue) == 2)
218 ieee80211_wake_queue(dev, prio);
219 }
220 }
221
222 static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
223 {
224 struct ieee80211_hw *dev = dev_id;
225 struct rtl8180_priv *priv = dev->priv;
226 u16 reg;
227
228 spin_lock(&priv->lock);
229 reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
230 if (unlikely(reg == 0xFFFF)) {
231 spin_unlock(&priv->lock);
232 return IRQ_HANDLED;
233 }
234
235 rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
236
237 if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
238 rtl8180_handle_tx(dev, 3);
239
240 if (reg & (RTL818X_INT_TXH_OK | RTL818X_INT_TXH_ERR))
241 rtl8180_handle_tx(dev, 2);
242
243 if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR))
244 rtl8180_handle_tx(dev, 1);
245
246 if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
247 rtl8180_handle_tx(dev, 0);
248
249 if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
250 rtl8180_handle_rx(dev);
251
252 spin_unlock(&priv->lock);
253
254 return IRQ_HANDLED;
255 }
256
257 static void rtl8180_tx(struct ieee80211_hw *dev,
258 struct ieee80211_tx_control *control,
259 struct sk_buff *skb)
260 {
261 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
262 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
263 struct rtl8180_priv *priv = dev->priv;
264 struct rtl8180_tx_ring *ring;
265 struct rtl8180_tx_desc *entry;
266 unsigned long flags;
267 unsigned int idx, prio;
268 dma_addr_t mapping;
269 u32 tx_flags;
270 u8 rc_flags;
271 u16 plcp_len = 0;
272 __le16 rts_duration = 0;
273
274 prio = skb_get_queue_mapping(skb);
275 ring = &priv->tx_ring[prio];
276
277 mapping = pci_map_single(priv->pdev, skb->data,
278 skb->len, PCI_DMA_TODEVICE);
279
280 if (pci_dma_mapping_error(priv->pdev, mapping)) {
281 kfree_skb(skb);
282 dev_err(&priv->pdev->dev, "TX DMA mapping error\n");
283 return;
284
285 }
286
287 tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
288 RTL818X_TX_DESC_FLAG_LS |
289 (ieee80211_get_tx_rate(dev, info)->hw_value << 24) |
290 skb->len;
291
292 if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180)
293 tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
294 RTL818X_TX_DESC_FLAG_NO_ENC;
295
296 rc_flags = info->control.rates[0].flags;
297 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
298 tx_flags |= RTL818X_TX_DESC_FLAG_RTS;
299 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
300 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
301 tx_flags |= RTL818X_TX_DESC_FLAG_CTS;
302 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
303 }
304
305 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
306 rts_duration = ieee80211_rts_duration(dev, priv->vif, skb->len,
307 info);
308
309 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180) {
310 unsigned int remainder;
311
312 plcp_len = DIV_ROUND_UP(16 * (skb->len + 4),
313 (ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
314 remainder = (16 * (skb->len + 4)) %
315 ((ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
316 if (remainder <= 6)
317 plcp_len |= 1 << 15;
318 }
319
320 spin_lock_irqsave(&priv->lock, flags);
321
322 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
323 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
324 priv->seqno += 0x10;
325 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
326 hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
327 }
328
329 idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
330 entry = &ring->desc[idx];
331
332 entry->rts_duration = rts_duration;
333 entry->plcp_len = cpu_to_le16(plcp_len);
334 entry->tx_buf = cpu_to_le32(mapping);
335 entry->frame_len = cpu_to_le32(skb->len);
336 entry->flags2 = info->control.rates[1].idx >= 0 ?
337 ieee80211_get_alt_retry_rate(dev, info, 0)->bitrate << 4 : 0;
338 entry->retry_limit = info->control.rates[0].count;
339
340 /* We must be sure that tx_flags is written last because the HW
341 * looks at it to check if the rest of data is valid or not
342 */
343 wmb();
344 entry->flags = cpu_to_le32(tx_flags);
345 /* We must be sure this has been written before followings HW
346 * register write, because this write will made the HW attempts
347 * to DMA the just-written data
348 */
349 wmb();
350
351 __skb_queue_tail(&ring->queue, skb);
352 if (ring->entries - skb_queue_len(&ring->queue) < 2)
353 ieee80211_stop_queue(dev, prio);
354
355 spin_unlock_irqrestore(&priv->lock, flags);
356
357 rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << (prio + 4)));
358 }
359
360 void rtl8180_set_anaparam(struct rtl8180_priv *priv, u32 anaparam)
361 {
362 u8 reg;
363
364 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
365 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
366 rtl818x_iowrite8(priv, &priv->map->CONFIG3,
367 reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
368 rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
369 rtl818x_iowrite8(priv, &priv->map->CONFIG3,
370 reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
371 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
372 }
373
374 static void rtl8180_conf_basic_rates(struct ieee80211_hw *dev,
375 u32 rates_mask)
376 {
377 struct rtl8180_priv *priv = dev->priv;
378
379 u8 max, min;
380 u16 reg;
381
382 max = fls(rates_mask) - 1;
383 min = ffs(rates_mask) - 1;
384
385 switch (priv->chip_family) {
386
387 case RTL818X_CHIP_FAMILY_RTL8180:
388 /* in 8180 this is NOT a BITMAP */
389 reg = rtl818x_ioread16(priv, &priv->map->BRSR);
390 reg &= ~3;
391 reg |= max;
392 rtl818x_iowrite16(priv, &priv->map->BRSR, reg);
393
394 break;
395
396 case RTL818X_CHIP_FAMILY_RTL8185:
397 /* in 8185 this is a BITMAP */
398 rtl818x_iowrite16(priv, &priv->map->BRSR, rates_mask);
399 rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (max << 4) | min);
400 break;
401 }
402 }
403
404 static int rtl8180_init_hw(struct ieee80211_hw *dev)
405 {
406 struct rtl8180_priv *priv = dev->priv;
407 u16 reg;
408
409 rtl818x_iowrite8(priv, &priv->map->CMD, 0);
410 rtl818x_ioread8(priv, &priv->map->CMD);
411 msleep(10);
412
413 /* reset */
414 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
415 rtl818x_ioread8(priv, &priv->map->CMD);
416
417 reg = rtl818x_ioread8(priv, &priv->map->CMD);
418 reg &= (1 << 1);
419 reg |= RTL818X_CMD_RESET;
420 rtl818x_iowrite8(priv, &priv->map->CMD, RTL818X_CMD_RESET);
421 rtl818x_ioread8(priv, &priv->map->CMD);
422 msleep(200);
423
424 /* check success of reset */
425 if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
426 wiphy_err(dev->wiphy, "reset timeout!\n");
427 return -ETIMEDOUT;
428 }
429
430 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
431 rtl818x_ioread8(priv, &priv->map->CMD);
432 msleep(200);
433
434 if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
435 /* For cardbus */
436 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
437 reg |= 1 << 1;
438 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
439 reg = rtl818x_ioread16(priv, &priv->map->FEMR);
440 reg |= (1 << 15) | (1 << 14) | (1 << 4);
441 rtl818x_iowrite16(priv, &priv->map->FEMR, reg);
442 }
443
444 rtl818x_iowrite8(priv, &priv->map->MSR, 0);
445
446 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
447 rtl8180_set_anaparam(priv, priv->anaparam);
448
449 rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
450 rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
451 rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
452 rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
453 rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
454
455 /* TODO: necessary? specs indicate not */
456 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
457 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
458 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
459 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
460 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
461 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
462 }
463 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
464
465 /* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */
466
467 /* TODO: turn off hw wep on rtl8180 */
468
469 rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
470
471 if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
472 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
473 rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
474
475 /* TODO: set ClkRun enable? necessary? */
476 reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
477 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
478 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
479 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
480 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
481 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
482 } else {
483 rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
484
485 rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
486 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
487 }
488
489 priv->rf->init(dev);
490
491 /* default basic rates are 1,2 Mbps for rtl8180. 1,2,6,9,12,18,24 Mbps
492 * otherwise. bitmask 0x3 and 0x01f3 respectively.
493 * NOTE: currenty rtl8225 RF code changes basic rates, so we need to do
494 * this after rf init.
495 * TODO: try to find out whether RF code really needs to do this..
496 */
497 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
498 rtl8180_conf_basic_rates(dev, 0x3);
499 else
500 rtl8180_conf_basic_rates(dev, 0x1f3);
501
502 return 0;
503 }
504
505 static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
506 {
507 struct rtl8180_priv *priv = dev->priv;
508 struct rtl8180_rx_desc *entry;
509 int i;
510
511 priv->rx_ring = pci_alloc_consistent(priv->pdev,
512 sizeof(*priv->rx_ring) * 32,
513 &priv->rx_ring_dma);
514
515 if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
516 wiphy_err(dev->wiphy, "Cannot allocate RX ring\n");
517 return -ENOMEM;
518 }
519
520 memset(priv->rx_ring, 0, sizeof(*priv->rx_ring) * 32);
521 priv->rx_idx = 0;
522
523 for (i = 0; i < 32; i++) {
524 struct sk_buff *skb = dev_alloc_skb(MAX_RX_SIZE);
525 dma_addr_t *mapping;
526 entry = &priv->rx_ring[i];
527 if (!skb) {
528 wiphy_err(dev->wiphy, "Cannot allocate RX skb\n");
529 return -ENOMEM;
530 }
531 priv->rx_buf[i] = skb;
532 mapping = (dma_addr_t *)skb->cb;
533 *mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb),
534 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
535
536 if (pci_dma_mapping_error(priv->pdev, *mapping)) {
537 kfree_skb(skb);
538 wiphy_err(dev->wiphy, "Cannot map DMA for RX skb\n");
539 return -ENOMEM;
540 }
541
542 entry->rx_buf = cpu_to_le32(*mapping);
543 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
544 MAX_RX_SIZE);
545 }
546 entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
547 return 0;
548 }
549
550 static void rtl8180_free_rx_ring(struct ieee80211_hw *dev)
551 {
552 struct rtl8180_priv *priv = dev->priv;
553 int i;
554
555 for (i = 0; i < 32; i++) {
556 struct sk_buff *skb = priv->rx_buf[i];
557 if (!skb)
558 continue;
559
560 pci_unmap_single(priv->pdev,
561 *((dma_addr_t *)skb->cb),
562 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
563 kfree_skb(skb);
564 }
565
566 pci_free_consistent(priv->pdev, sizeof(*priv->rx_ring) * 32,
567 priv->rx_ring, priv->rx_ring_dma);
568 priv->rx_ring = NULL;
569 }
570
571 static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
572 unsigned int prio, unsigned int entries)
573 {
574 struct rtl8180_priv *priv = dev->priv;
575 struct rtl8180_tx_desc *ring;
576 dma_addr_t dma;
577 int i;
578
579 ring = pci_alloc_consistent(priv->pdev, sizeof(*ring) * entries, &dma);
580 if (!ring || (unsigned long)ring & 0xFF) {
581 wiphy_err(dev->wiphy, "Cannot allocate TX ring (prio = %d)\n",
582 prio);
583 return -ENOMEM;
584 }
585
586 memset(ring, 0, sizeof(*ring)*entries);
587 priv->tx_ring[prio].desc = ring;
588 priv->tx_ring[prio].dma = dma;
589 priv->tx_ring[prio].idx = 0;
590 priv->tx_ring[prio].entries = entries;
591 skb_queue_head_init(&priv->tx_ring[prio].queue);
592
593 for (i = 0; i < entries; i++)
594 ring[i].next_tx_desc =
595 cpu_to_le32((u32)dma + ((i + 1) % entries) * sizeof(*ring));
596
597 return 0;
598 }
599
600 static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio)
601 {
602 struct rtl8180_priv *priv = dev->priv;
603 struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
604
605 while (skb_queue_len(&ring->queue)) {
606 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
607 struct sk_buff *skb = __skb_dequeue(&ring->queue);
608
609 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
610 skb->len, PCI_DMA_TODEVICE);
611 kfree_skb(skb);
612 ring->idx = (ring->idx + 1) % ring->entries;
613 }
614
615 pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries,
616 ring->desc, ring->dma);
617 ring->desc = NULL;
618 }
619
620 static int rtl8180_start(struct ieee80211_hw *dev)
621 {
622 struct rtl8180_priv *priv = dev->priv;
623 int ret, i;
624 u32 reg;
625
626 ret = rtl8180_init_rx_ring(dev);
627 if (ret)
628 return ret;
629
630 for (i = 0; i < 4; i++)
631 if ((ret = rtl8180_init_tx_ring(dev, i, 16)))
632 goto err_free_rings;
633
634 ret = rtl8180_init_hw(dev);
635 if (ret)
636 goto err_free_rings;
637
638 rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
639 rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
640 rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
641 rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
642 rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
643
644 ret = request_irq(priv->pdev->irq, rtl8180_interrupt,
645 IRQF_SHARED, KBUILD_MODNAME, dev);
646 if (ret) {
647 wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
648 goto err_free_rings;
649 }
650
651 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
652
653 rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
654 rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
655
656 reg = RTL818X_RX_CONF_ONLYERLPKT |
657 RTL818X_RX_CONF_RX_AUTORESETPHY |
658 RTL818X_RX_CONF_MGMT |
659 RTL818X_RX_CONF_DATA |
660 (7 << 8 /* MAX RX DMA */) |
661 RTL818X_RX_CONF_BROADCAST |
662 RTL818X_RX_CONF_NICMAC;
663
664 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185)
665 reg |= RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2;
666 else {
667 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
668 ? RTL818X_RX_CONF_CSDM1 : 0;
669 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
670 ? RTL818X_RX_CONF_CSDM2 : 0;
671 }
672
673 priv->rx_conf = reg;
674 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
675
676 if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
677 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
678
679 /* CW is not on per-packet basis.
680 * in rtl8185 the CW_VALUE reg is used.
681 */
682 reg &= ~RTL818X_CW_CONF_PERPACKET_CW;
683 /* retry limit IS on per-packet basis.
684 * the short and long retry limit in TX_CONF
685 * reg are ignored
686 */
687 reg |= RTL818X_CW_CONF_PERPACKET_RETRY;
688 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
689
690 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
691 /* TX antenna and TX gain are not on per-packet basis.
692 * TX Antenna is selected by ANTSEL reg (RX in BB regs).
693 * TX gain is selected with CCK_TX_AGC and OFDM_TX_AGC regs
694 */
695 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN;
696 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL;
697 reg |= RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
698 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
699
700 /* disable early TX */
701 rtl818x_iowrite8(priv, (u8 __iomem *)priv->map + 0xec, 0x3f);
702 }
703
704 reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
705 reg |= (6 << 21 /* MAX TX DMA */) |
706 RTL818X_TX_CONF_NO_ICV;
707
708
709
710 if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180)
711 reg &= ~RTL818X_TX_CONF_PROBE_DTS;
712 else
713 reg &= ~RTL818X_TX_CONF_HW_SEQNUM;
714
715 reg &= ~RTL818X_TX_CONF_DISCW;
716
717 /* different meaning, same value on both rtl8185 and rtl8180 */
718 reg &= ~RTL818X_TX_CONF_SAT_HWPLCP;
719
720 rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
721
722 reg = rtl818x_ioread8(priv, &priv->map->CMD);
723 reg |= RTL818X_CMD_RX_ENABLE;
724 reg |= RTL818X_CMD_TX_ENABLE;
725 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
726
727 return 0;
728
729 err_free_rings:
730 rtl8180_free_rx_ring(dev);
731 for (i = 0; i < 4; i++)
732 if (priv->tx_ring[i].desc)
733 rtl8180_free_tx_ring(dev, i);
734
735 return ret;
736 }
737
738 static void rtl8180_stop(struct ieee80211_hw *dev)
739 {
740 struct rtl8180_priv *priv = dev->priv;
741 u8 reg;
742 int i;
743
744 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
745
746 reg = rtl818x_ioread8(priv, &priv->map->CMD);
747 reg &= ~RTL818X_CMD_TX_ENABLE;
748 reg &= ~RTL818X_CMD_RX_ENABLE;
749 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
750
751 priv->rf->stop(dev);
752
753 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
754 reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
755 rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
756 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
757
758 free_irq(priv->pdev->irq, dev);
759
760 rtl8180_free_rx_ring(dev);
761 for (i = 0; i < 4; i++)
762 rtl8180_free_tx_ring(dev, i);
763 }
764
765 static u64 rtl8180_get_tsf(struct ieee80211_hw *dev,
766 struct ieee80211_vif *vif)
767 {
768 struct rtl8180_priv *priv = dev->priv;
769
770 return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
771 (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
772 }
773
774 static void rtl8180_beacon_work(struct work_struct *work)
775 {
776 struct rtl8180_vif *vif_priv =
777 container_of(work, struct rtl8180_vif, beacon_work.work);
778 struct ieee80211_vif *vif =
779 container_of((void *)vif_priv, struct ieee80211_vif, drv_priv);
780 struct ieee80211_hw *dev = vif_priv->dev;
781 struct ieee80211_mgmt *mgmt;
782 struct sk_buff *skb;
783
784 /* don't overflow the tx ring */
785 if (ieee80211_queue_stopped(dev, 0))
786 goto resched;
787
788 /* grab a fresh beacon */
789 skb = ieee80211_beacon_get(dev, vif);
790 if (!skb)
791 goto resched;
792
793 /*
794 * update beacon timestamp w/ TSF value
795 * TODO: make hardware update beacon timestamp
796 */
797 mgmt = (struct ieee80211_mgmt *)skb->data;
798 mgmt->u.beacon.timestamp = cpu_to_le64(rtl8180_get_tsf(dev, vif));
799
800 /* TODO: use actual beacon queue */
801 skb_set_queue_mapping(skb, 0);
802
803 rtl8180_tx(dev, NULL, skb);
804
805 resched:
806 /*
807 * schedule next beacon
808 * TODO: use hardware support for beacon timing
809 */
810 schedule_delayed_work(&vif_priv->beacon_work,
811 usecs_to_jiffies(1024 * vif->bss_conf.beacon_int));
812 }
813
814 static int rtl8180_add_interface(struct ieee80211_hw *dev,
815 struct ieee80211_vif *vif)
816 {
817 struct rtl8180_priv *priv = dev->priv;
818 struct rtl8180_vif *vif_priv;
819
820 /*
821 * We only support one active interface at a time.
822 */
823 if (priv->vif)
824 return -EBUSY;
825
826 switch (vif->type) {
827 case NL80211_IFTYPE_STATION:
828 case NL80211_IFTYPE_ADHOC:
829 break;
830 default:
831 return -EOPNOTSUPP;
832 }
833
834 priv->vif = vif;
835
836 /* Initialize driver private area */
837 vif_priv = (struct rtl8180_vif *)&vif->drv_priv;
838 vif_priv->dev = dev;
839 INIT_DELAYED_WORK(&vif_priv->beacon_work, rtl8180_beacon_work);
840 vif_priv->enable_beacon = false;
841
842 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
843 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->MAC[0],
844 le32_to_cpu(*(__le32 *)vif->addr));
845 rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->MAC[4],
846 le16_to_cpu(*(__le16 *)(vif->addr + 4)));
847 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
848
849 return 0;
850 }
851
852 static void rtl8180_remove_interface(struct ieee80211_hw *dev,
853 struct ieee80211_vif *vif)
854 {
855 struct rtl8180_priv *priv = dev->priv;
856 priv->vif = NULL;
857 }
858
859 static int rtl8180_config(struct ieee80211_hw *dev, u32 changed)
860 {
861 struct rtl8180_priv *priv = dev->priv;
862 struct ieee80211_conf *conf = &dev->conf;
863
864 priv->rf->set_chan(dev, conf);
865
866 return 0;
867 }
868
869 static int rtl8180_conf_tx(struct ieee80211_hw *dev,
870 struct ieee80211_vif *vif, u16 queue,
871 const struct ieee80211_tx_queue_params *params)
872 {
873 struct rtl8180_priv *priv = dev->priv;
874 u8 cw_min, cw_max;
875
876 /* nothing to do ? */
877 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
878 return 0;
879
880 cw_min = fls(params->cw_min);
881 cw_max = fls(params->cw_max);
882
883 rtl818x_iowrite8(priv, &priv->map->CW_VAL, (cw_max << 4) | cw_min);
884
885 return 0;
886 }
887
888 static void rtl8180_conf_erp(struct ieee80211_hw *dev,
889 struct ieee80211_bss_conf *info)
890 {
891 struct rtl8180_priv *priv = dev->priv;
892 u8 sifs, difs;
893 int eifs;
894 u8 hw_eifs;
895
896 /* TODO: should we do something ? */
897 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
898 return;
899
900 /* I _hope_ this means 10uS for the HW.
901 * In reference code it is 0x22 for
902 * both rtl8187L and rtl8187SE
903 */
904 sifs = 0x22;
905
906 if (info->use_short_slot)
907 priv->slot_time = 9;
908 else
909 priv->slot_time = 20;
910
911 /* 10 is SIFS time in uS */
912 difs = 10 + 2 * priv->slot_time;
913 eifs = 10 + difs + priv->ack_time;
914
915 /* HW should use 4uS units for EIFS (I'm sure for rtl8185)*/
916 hw_eifs = DIV_ROUND_UP(eifs, 4);
917
918
919 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
920 rtl818x_iowrite8(priv, &priv->map->SIFS, sifs);
921 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
922
923 /* from reference code. set ack timeout reg = eifs reg */
924 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, hw_eifs);
925
926 /* rtl8187/rtl8185 HW bug. After EIFS is elapsed,
927 * the HW still wait for DIFS.
928 * HW uses 4uS units for EIFS.
929 */
930 hw_eifs = DIV_ROUND_UP(eifs - difs, 4);
931
932 rtl818x_iowrite8(priv, &priv->map->EIFS, hw_eifs);
933 }
934
935 static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
936 struct ieee80211_vif *vif,
937 struct ieee80211_bss_conf *info,
938 u32 changed)
939 {
940 struct rtl8180_priv *priv = dev->priv;
941 struct rtl8180_vif *vif_priv;
942 int i;
943 u8 reg;
944
945 vif_priv = (struct rtl8180_vif *)&vif->drv_priv;
946
947 if (changed & BSS_CHANGED_BSSID) {
948 for (i = 0; i < ETH_ALEN; i++)
949 rtl818x_iowrite8(priv, &priv->map->BSSID[i],
950 info->bssid[i]);
951
952 if (is_valid_ether_addr(info->bssid)) {
953 if (vif->type == NL80211_IFTYPE_ADHOC)
954 reg = RTL818X_MSR_ADHOC;
955 else
956 reg = RTL818X_MSR_INFRA;
957 } else
958 reg = RTL818X_MSR_NO_LINK;
959 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
960 }
961
962 if (changed & BSS_CHANGED_BASIC_RATES)
963 rtl8180_conf_basic_rates(dev, info->basic_rates);
964
965 if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE)) {
966
967 /* when preamble changes, acktime duration changes, and erp must
968 * be recalculated. ACK time is calculated at lowest rate.
969 * Since mac80211 include SIFS time we remove it (-10)
970 */
971 priv->ack_time =
972 le16_to_cpu(ieee80211_generic_frame_duration(dev,
973 priv->vif,
974 IEEE80211_BAND_2GHZ, 10,
975 &priv->rates[0])) - 10;
976
977 rtl8180_conf_erp(dev, info);
978 }
979
980 if (changed & BSS_CHANGED_BEACON_ENABLED)
981 vif_priv->enable_beacon = info->enable_beacon;
982
983 if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) {
984 cancel_delayed_work_sync(&vif_priv->beacon_work);
985 if (vif_priv->enable_beacon)
986 schedule_work(&vif_priv->beacon_work.work);
987 }
988 }
989
990 static u64 rtl8180_prepare_multicast(struct ieee80211_hw *dev,
991 struct netdev_hw_addr_list *mc_list)
992 {
993 return netdev_hw_addr_list_count(mc_list);
994 }
995
996 static void rtl8180_configure_filter(struct ieee80211_hw *dev,
997 unsigned int changed_flags,
998 unsigned int *total_flags,
999 u64 multicast)
1000 {
1001 struct rtl8180_priv *priv = dev->priv;
1002
1003 if (changed_flags & FIF_FCSFAIL)
1004 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1005 if (changed_flags & FIF_CONTROL)
1006 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1007 if (changed_flags & FIF_OTHER_BSS)
1008 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1009 if (*total_flags & FIF_ALLMULTI || multicast > 0)
1010 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1011 else
1012 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1013
1014 *total_flags = 0;
1015
1016 if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1017 *total_flags |= FIF_FCSFAIL;
1018 if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1019 *total_flags |= FIF_CONTROL;
1020 if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1021 *total_flags |= FIF_OTHER_BSS;
1022 if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1023 *total_flags |= FIF_ALLMULTI;
1024
1025 rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
1026 }
1027
1028 static const struct ieee80211_ops rtl8180_ops = {
1029 .tx = rtl8180_tx,
1030 .start = rtl8180_start,
1031 .stop = rtl8180_stop,
1032 .add_interface = rtl8180_add_interface,
1033 .remove_interface = rtl8180_remove_interface,
1034 .config = rtl8180_config,
1035 .bss_info_changed = rtl8180_bss_info_changed,
1036 .conf_tx = rtl8180_conf_tx,
1037 .prepare_multicast = rtl8180_prepare_multicast,
1038 .configure_filter = rtl8180_configure_filter,
1039 .get_tsf = rtl8180_get_tsf,
1040 };
1041
1042 static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1043 {
1044 struct rtl8180_priv *priv = eeprom->data;
1045 u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1046
1047 eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1048 eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1049 eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1050 eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1051 }
1052
1053 static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1054 {
1055 struct rtl8180_priv *priv = eeprom->data;
1056 u8 reg = 2 << 6;
1057
1058 if (eeprom->reg_data_in)
1059 reg |= RTL818X_EEPROM_CMD_WRITE;
1060 if (eeprom->reg_data_out)
1061 reg |= RTL818X_EEPROM_CMD_READ;
1062 if (eeprom->reg_data_clock)
1063 reg |= RTL818X_EEPROM_CMD_CK;
1064 if (eeprom->reg_chip_select)
1065 reg |= RTL818X_EEPROM_CMD_CS;
1066
1067 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1068 rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1069 udelay(10);
1070 }
1071
1072 static void rtl8180_eeprom_read(struct rtl8180_priv *priv)
1073 {
1074 struct eeprom_93cx6 eeprom;
1075 int eeprom_cck_table_adr;
1076 u16 eeprom_val;
1077 int i;
1078
1079 eeprom.data = priv;
1080 eeprom.register_read = rtl8180_eeprom_register_read;
1081 eeprom.register_write = rtl8180_eeprom_register_write;
1082 if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1083 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1084 else
1085 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1086
1087 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
1088 RTL818X_EEPROM_CMD_PROGRAM);
1089 rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1090 udelay(10);
1091
1092 eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val);
1093 eeprom_val &= 0xFF;
1094 priv->rf_type = eeprom_val;
1095
1096 eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val);
1097 priv->csthreshold = eeprom_val >> 8;
1098
1099 eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)priv->mac_addr, 3);
1100
1101 eeprom_cck_table_adr = 0x10;
1102
1103 /* CCK TX power */
1104 for (i = 0; i < 14; i += 2) {
1105 u16 txpwr;
1106 eeprom_93cx6_read(&eeprom, eeprom_cck_table_adr + (i >> 1),
1107 &txpwr);
1108 priv->channels[i].hw_value = txpwr & 0xFF;
1109 priv->channels[i + 1].hw_value = txpwr >> 8;
1110 }
1111
1112 /* OFDM TX power */
1113 if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
1114 for (i = 0; i < 14; i += 2) {
1115 u16 txpwr;
1116 eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr);
1117 priv->channels[i].hw_value |= (txpwr & 0xFF) << 8;
1118 priv->channels[i + 1].hw_value |= txpwr & 0xFF00;
1119 }
1120 }
1121
1122 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180) {
1123 __le32 anaparam;
1124 eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2);
1125 priv->anaparam = le32_to_cpu(anaparam);
1126 eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam);
1127 }
1128
1129 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
1130 RTL818X_EEPROM_CMD_NORMAL);
1131 }
1132
1133 static int rtl8180_probe(struct pci_dev *pdev,
1134 const struct pci_device_id *id)
1135 {
1136 struct ieee80211_hw *dev;
1137 struct rtl8180_priv *priv;
1138 unsigned long mem_addr, mem_len;
1139 unsigned int io_addr, io_len;
1140 int err;
1141 const char *chip_name, *rf_name = NULL;
1142 u32 reg;
1143
1144 err = pci_enable_device(pdev);
1145 if (err) {
1146 printk(KERN_ERR "%s (rtl8180): Cannot enable new PCI device\n",
1147 pci_name(pdev));
1148 return err;
1149 }
1150
1151 err = pci_request_regions(pdev, KBUILD_MODNAME);
1152 if (err) {
1153 printk(KERN_ERR "%s (rtl8180): Cannot obtain PCI resources\n",
1154 pci_name(pdev));
1155 return err;
1156 }
1157
1158 io_addr = pci_resource_start(pdev, 0);
1159 io_len = pci_resource_len(pdev, 0);
1160 mem_addr = pci_resource_start(pdev, 1);
1161 mem_len = pci_resource_len(pdev, 1);
1162
1163 if (mem_len < sizeof(struct rtl818x_csr) ||
1164 io_len < sizeof(struct rtl818x_csr)) {
1165 printk(KERN_ERR "%s (rtl8180): Too short PCI resources\n",
1166 pci_name(pdev));
1167 err = -ENOMEM;
1168 goto err_free_reg;
1169 }
1170
1171 if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) ||
1172 (err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))) {
1173 printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n",
1174 pci_name(pdev));
1175 goto err_free_reg;
1176 }
1177
1178 pci_set_master(pdev);
1179
1180 dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8180_ops);
1181 if (!dev) {
1182 printk(KERN_ERR "%s (rtl8180): ieee80211 alloc failed\n",
1183 pci_name(pdev));
1184 err = -ENOMEM;
1185 goto err_free_reg;
1186 }
1187
1188 priv = dev->priv;
1189 priv->pdev = pdev;
1190
1191 dev->max_rates = 2;
1192 SET_IEEE80211_DEV(dev, &pdev->dev);
1193 pci_set_drvdata(pdev, dev);
1194
1195 priv->map = pci_iomap(pdev, 1, mem_len);
1196 if (!priv->map)
1197 priv->map = pci_iomap(pdev, 0, io_len);
1198
1199 if (!priv->map) {
1200 printk(KERN_ERR "%s (rtl8180): Cannot map device memory\n",
1201 pci_name(pdev));
1202 goto err_free_dev;
1203 }
1204
1205 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1206 BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1207
1208 memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1209 memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1210
1211 priv->band.band = IEEE80211_BAND_2GHZ;
1212 priv->band.channels = priv->channels;
1213 priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1214 priv->band.bitrates = priv->rates;
1215 priv->band.n_bitrates = 4;
1216 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1217
1218 dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1219 IEEE80211_HW_RX_INCLUDES_FCS |
1220 IEEE80211_HW_SIGNAL_UNSPEC;
1221 dev->vif_data_size = sizeof(struct rtl8180_vif);
1222 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1223 BIT(NL80211_IFTYPE_ADHOC);
1224 dev->queues = 1;
1225 dev->max_signal = 65;
1226
1227 reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1228 reg &= RTL818X_TX_CONF_HWVER_MASK;
1229 switch (reg) {
1230 case RTL818X_TX_CONF_R8180_ABCD:
1231 chip_name = "RTL8180";
1232 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8180;
1233 break;
1234
1235 case RTL818X_TX_CONF_R8180_F:
1236 chip_name = "RTL8180vF";
1237 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8180;
1238 break;
1239
1240 case RTL818X_TX_CONF_R8185_ABC:
1241 chip_name = "RTL8185";
1242 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8185;
1243 break;
1244
1245 case RTL818X_TX_CONF_R8185_D:
1246 chip_name = "RTL8185vD";
1247 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8185;
1248 break;
1249 default:
1250 printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
1251 pci_name(pdev), reg >> 25);
1252 goto err_iounmap;
1253 }
1254
1255 if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
1256 priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1257 pci_try_set_mwi(pdev);
1258 }
1259
1260 rtl8180_eeprom_read(priv);
1261
1262 switch (priv->rf_type) {
1263 case 1: rf_name = "Intersil";
1264 break;
1265 case 2: rf_name = "RFMD";
1266 break;
1267 case 3: priv->rf = &sa2400_rf_ops;
1268 break;
1269 case 4: priv->rf = &max2820_rf_ops;
1270 break;
1271 case 5: priv->rf = &grf5101_rf_ops;
1272 break;
1273 case 9: priv->rf = rtl8180_detect_rf(dev);
1274 break;
1275 case 10:
1276 rf_name = "RTL8255";
1277 break;
1278 default:
1279 printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
1280 pci_name(pdev), priv->rf_type);
1281 goto err_iounmap;
1282 }
1283
1284 if (!priv->rf) {
1285 printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
1286 pci_name(pdev), rf_name);
1287 goto err_iounmap;
1288 }
1289
1290 if (!is_valid_ether_addr(priv->mac_addr)) {
1291 printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using"
1292 " randomly generated MAC addr\n", pci_name(pdev));
1293 eth_random_addr(priv->mac_addr);
1294 }
1295 SET_IEEE80211_PERM_ADDR(dev, priv->mac_addr);
1296
1297 spin_lock_init(&priv->lock);
1298
1299 err = ieee80211_register_hw(dev);
1300 if (err) {
1301 printk(KERN_ERR "%s (rtl8180): Cannot register device\n",
1302 pci_name(pdev));
1303 goto err_iounmap;
1304 }
1305
1306 wiphy_info(dev->wiphy, "hwaddr %pm, %s + %s\n",
1307 priv->mac_addr, chip_name, priv->rf->name);
1308
1309 return 0;
1310
1311 err_iounmap:
1312 pci_iounmap(pdev, priv->map);
1313
1314 err_free_dev:
1315 ieee80211_free_hw(dev);
1316
1317 err_free_reg:
1318 pci_release_regions(pdev);
1319 pci_disable_device(pdev);
1320 return err;
1321 }
1322
1323 static void rtl8180_remove(struct pci_dev *pdev)
1324 {
1325 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1326 struct rtl8180_priv *priv;
1327
1328 if (!dev)
1329 return;
1330
1331 ieee80211_unregister_hw(dev);
1332
1333 priv = dev->priv;
1334
1335 pci_iounmap(pdev, priv->map);
1336 pci_release_regions(pdev);
1337 pci_disable_device(pdev);
1338 ieee80211_free_hw(dev);
1339 }
1340
1341 #ifdef CONFIG_PM
1342 static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state)
1343 {
1344 pci_save_state(pdev);
1345 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1346 return 0;
1347 }
1348
1349 static int rtl8180_resume(struct pci_dev *pdev)
1350 {
1351 pci_set_power_state(pdev, PCI_D0);
1352 pci_restore_state(pdev);
1353 return 0;
1354 }
1355
1356 #endif /* CONFIG_PM */
1357
1358 static struct pci_driver rtl8180_driver = {
1359 .name = KBUILD_MODNAME,
1360 .id_table = rtl8180_table,
1361 .probe = rtl8180_probe,
1362 .remove = rtl8180_remove,
1363 #ifdef CONFIG_PM
1364 .suspend = rtl8180_suspend,
1365 .resume = rtl8180_resume,
1366 #endif /* CONFIG_PM */
1367 };
1368
1369 module_pci_driver(rtl8180_driver);
Linux kernel - Deliverables
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