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hwmon: (max6650) Add support for alarms
[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 <andreamrl@tiscali.it>
7 *
8 * Based on the r8180 driver, which is:
9 * Copyright 2004-2005 Andrea Merello <andreamrl@tiscali.it>, 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/init.h>
19 #include <linux/pci.h>
20 #include <linux/delay.h>
21 #include <linux/etherdevice.h>
22 #include <linux/eeprom_93cx6.h>
23 #include <net/mac80211.h>
24
25 #include "rtl8180.h"
26 #include "rtl8180_rtl8225.h"
27 #include "rtl8180_sa2400.h"
28 #include "rtl8180_max2820.h"
29 #include "rtl8180_grf5101.h"
30
31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
32 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
33 MODULE_DESCRIPTION("RTL8180 / RTL8185 PCI wireless driver");
34 MODULE_LICENSE("GPL");
35
36 static struct pci_device_id rtl8180_table[] __devinitdata = {
37 /* rtl8185 */
38 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8185) },
39 { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x700f) },
40 { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x701f) },
41
42 /* rtl8180 */
43 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8180) },
44 { PCI_DEVICE(0x1799, 0x6001) },
45 { PCI_DEVICE(0x1799, 0x6020) },
46 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x3300) },
47 { }
48 };
49
50 MODULE_DEVICE_TABLE(pci, rtl8180_table);
51
52 static const struct ieee80211_rate rtl818x_rates[] = {
53 { .bitrate = 10, .hw_value = 0, },
54 { .bitrate = 20, .hw_value = 1, },
55 { .bitrate = 55, .hw_value = 2, },
56 { .bitrate = 110, .hw_value = 3, },
57 { .bitrate = 60, .hw_value = 4, },
58 { .bitrate = 90, .hw_value = 5, },
59 { .bitrate = 120, .hw_value = 6, },
60 { .bitrate = 180, .hw_value = 7, },
61 { .bitrate = 240, .hw_value = 8, },
62 { .bitrate = 360, .hw_value = 9, },
63 { .bitrate = 480, .hw_value = 10, },
64 { .bitrate = 540, .hw_value = 11, },
65 };
66
67 static const struct ieee80211_channel rtl818x_channels[] = {
68 { .center_freq = 2412 },
69 { .center_freq = 2417 },
70 { .center_freq = 2422 },
71 { .center_freq = 2427 },
72 { .center_freq = 2432 },
73 { .center_freq = 2437 },
74 { .center_freq = 2442 },
75 { .center_freq = 2447 },
76 { .center_freq = 2452 },
77 { .center_freq = 2457 },
78 { .center_freq = 2462 },
79 { .center_freq = 2467 },
80 { .center_freq = 2472 },
81 { .center_freq = 2484 },
82 };
83
84
85
86
87 void rtl8180_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
88 {
89 struct rtl8180_priv *priv = dev->priv;
90 int i = 10;
91 u32 buf;
92
93 buf = (data << 8) | addr;
94
95 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf | 0x80);
96 while (i--) {
97 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf);
98 if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF))
99 return;
100 }
101 }
102
103 static void rtl8180_handle_rx(struct ieee80211_hw *dev)
104 {
105 struct rtl8180_priv *priv = dev->priv;
106 unsigned int count = 32;
107
108 while (count--) {
109 struct rtl8180_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
110 struct sk_buff *skb = priv->rx_buf[priv->rx_idx];
111 u32 flags = le32_to_cpu(entry->flags);
112
113 if (flags & RTL818X_RX_DESC_FLAG_OWN)
114 return;
115
116 if (unlikely(flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL |
117 RTL818X_RX_DESC_FLAG_FOF |
118 RTL818X_RX_DESC_FLAG_RX_ERR)))
119 goto done;
120 else {
121 u32 flags2 = le32_to_cpu(entry->flags2);
122 struct ieee80211_rx_status rx_status = {0};
123 struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_SIZE);
124
125 if (unlikely(!new_skb))
126 goto done;
127
128 pci_unmap_single(priv->pdev,
129 *((dma_addr_t *)skb->cb),
130 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
131 skb_put(skb, flags & 0xFFF);
132
133 rx_status.antenna = (flags2 >> 15) & 1;
134 /* TODO: improve signal/rssi reporting */
135 rx_status.qual = flags2 & 0xFF;
136 rx_status.signal = (flags2 >> 8) & 0x7F;
137 /* XXX: is this correct? */
138 rx_status.rate_idx = (flags >> 20) & 0xF;
139 rx_status.freq = dev->conf.channel->center_freq;
140 rx_status.band = dev->conf.channel->band;
141 rx_status.mactime = le64_to_cpu(entry->tsft);
142 rx_status.flag |= RX_FLAG_TSFT;
143 if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
144 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
145
146 ieee80211_rx_irqsafe(dev, skb, &rx_status);
147
148 skb = new_skb;
149 priv->rx_buf[priv->rx_idx] = skb;
150 *((dma_addr_t *) skb->cb) =
151 pci_map_single(priv->pdev, skb_tail_pointer(skb),
152 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
153 }
154
155 done:
156 entry->rx_buf = cpu_to_le32(*((dma_addr_t *)skb->cb));
157 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
158 MAX_RX_SIZE);
159 if (priv->rx_idx == 31)
160 entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
161 priv->rx_idx = (priv->rx_idx + 1) % 32;
162 }
163 }
164
165 static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
166 {
167 struct rtl8180_priv *priv = dev->priv;
168 struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
169
170 while (skb_queue_len(&ring->queue)) {
171 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
172 struct sk_buff *skb;
173 struct ieee80211_tx_info *info;
174 u32 flags = le32_to_cpu(entry->flags);
175
176 if (flags & RTL818X_TX_DESC_FLAG_OWN)
177 return;
178
179 ring->idx = (ring->idx + 1) % ring->entries;
180 skb = __skb_dequeue(&ring->queue);
181 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
182 skb->len, PCI_DMA_TODEVICE);
183
184 info = IEEE80211_SKB_CB(skb);
185 ieee80211_tx_info_clear_status(info);
186
187 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
188 (flags & RTL818X_TX_DESC_FLAG_TX_OK))
189 info->flags |= IEEE80211_TX_STAT_ACK;
190
191 info->status.rates[0].count = (flags & 0xFF) + 1;
192
193 ieee80211_tx_status_irqsafe(dev, skb);
194 if (ring->entries - skb_queue_len(&ring->queue) == 2)
195 ieee80211_wake_queue(dev, prio);
196 }
197 }
198
199 static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
200 {
201 struct ieee80211_hw *dev = dev_id;
202 struct rtl8180_priv *priv = dev->priv;
203 u16 reg;
204
205 spin_lock(&priv->lock);
206 reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
207 if (unlikely(reg == 0xFFFF)) {
208 spin_unlock(&priv->lock);
209 return IRQ_HANDLED;
210 }
211
212 rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
213
214 if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
215 rtl8180_handle_tx(dev, 3);
216
217 if (reg & (RTL818X_INT_TXH_OK | RTL818X_INT_TXH_ERR))
218 rtl8180_handle_tx(dev, 2);
219
220 if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR))
221 rtl8180_handle_tx(dev, 1);
222
223 if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
224 rtl8180_handle_tx(dev, 0);
225
226 if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
227 rtl8180_handle_rx(dev);
228
229 spin_unlock(&priv->lock);
230
231 return IRQ_HANDLED;
232 }
233
234 static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
235 {
236 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
237 struct rtl8180_priv *priv = dev->priv;
238 struct rtl8180_tx_ring *ring;
239 struct rtl8180_tx_desc *entry;
240 unsigned long flags;
241 unsigned int idx, prio;
242 dma_addr_t mapping;
243 u32 tx_flags;
244 u8 rc_flags;
245 u16 plcp_len = 0;
246 __le16 rts_duration = 0;
247
248 prio = skb_get_queue_mapping(skb);
249 ring = &priv->tx_ring[prio];
250
251 mapping = pci_map_single(priv->pdev, skb->data,
252 skb->len, PCI_DMA_TODEVICE);
253
254 tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
255 RTL818X_TX_DESC_FLAG_LS |
256 (ieee80211_get_tx_rate(dev, info)->hw_value << 24) |
257 skb->len;
258
259 if (priv->r8185)
260 tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
261 RTL818X_TX_DESC_FLAG_NO_ENC;
262
263 rc_flags = info->control.rates[0].flags;
264 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
265 tx_flags |= RTL818X_TX_DESC_FLAG_RTS;
266 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
267 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
268 tx_flags |= RTL818X_TX_DESC_FLAG_CTS;
269 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
270 }
271
272 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
273 rts_duration = ieee80211_rts_duration(dev, priv->vif, skb->len,
274 info);
275
276 if (!priv->r8185) {
277 unsigned int remainder;
278
279 plcp_len = DIV_ROUND_UP(16 * (skb->len + 4),
280 (ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
281 remainder = (16 * (skb->len + 4)) %
282 ((ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
283 if (remainder > 0 && remainder <= 6)
284 plcp_len |= 1 << 15;
285 }
286
287 spin_lock_irqsave(&priv->lock, flags);
288 idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
289 entry = &ring->desc[idx];
290
291 entry->rts_duration = rts_duration;
292 entry->plcp_len = cpu_to_le16(plcp_len);
293 entry->tx_buf = cpu_to_le32(mapping);
294 entry->frame_len = cpu_to_le32(skb->len);
295 entry->flags2 = info->control.rates[1].idx >= 0 ?
296 ieee80211_get_alt_retry_rate(dev, info, 0)->bitrate << 4 : 0;
297 entry->retry_limit = info->control.rates[0].count;
298 entry->flags = cpu_to_le32(tx_flags);
299 __skb_queue_tail(&ring->queue, skb);
300 if (ring->entries - skb_queue_len(&ring->queue) < 2)
301 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
302 spin_unlock_irqrestore(&priv->lock, flags);
303
304 rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << (prio + 4)));
305
306 return 0;
307 }
308
309 void rtl8180_set_anaparam(struct rtl8180_priv *priv, u32 anaparam)
310 {
311 u8 reg;
312
313 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
314 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
315 rtl818x_iowrite8(priv, &priv->map->CONFIG3,
316 reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
317 rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
318 rtl818x_iowrite8(priv, &priv->map->CONFIG3,
319 reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
320 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
321 }
322
323 static int rtl8180_init_hw(struct ieee80211_hw *dev)
324 {
325 struct rtl8180_priv *priv = dev->priv;
326 u16 reg;
327
328 rtl818x_iowrite8(priv, &priv->map->CMD, 0);
329 rtl818x_ioread8(priv, &priv->map->CMD);
330 msleep(10);
331
332 /* reset */
333 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
334 rtl818x_ioread8(priv, &priv->map->CMD);
335
336 reg = rtl818x_ioread8(priv, &priv->map->CMD);
337 reg &= (1 << 1);
338 reg |= RTL818X_CMD_RESET;
339 rtl818x_iowrite8(priv, &priv->map->CMD, RTL818X_CMD_RESET);
340 rtl818x_ioread8(priv, &priv->map->CMD);
341 msleep(200);
342
343 /* check success of reset */
344 if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
345 printk(KERN_ERR "%s: reset timeout!\n", wiphy_name(dev->wiphy));
346 return -ETIMEDOUT;
347 }
348
349 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
350 rtl818x_ioread8(priv, &priv->map->CMD);
351 msleep(200);
352
353 if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
354 /* For cardbus */
355 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
356 reg |= 1 << 1;
357 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
358 reg = rtl818x_ioread16(priv, &priv->map->FEMR);
359 reg |= (1 << 15) | (1 << 14) | (1 << 4);
360 rtl818x_iowrite16(priv, &priv->map->FEMR, reg);
361 }
362
363 rtl818x_iowrite8(priv, &priv->map->MSR, 0);
364
365 if (!priv->r8185)
366 rtl8180_set_anaparam(priv, priv->anaparam);
367
368 rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
369 rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
370 rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
371 rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
372 rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
373
374 /* TODO: necessary? specs indicate not */
375 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
376 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
377 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
378 if (priv->r8185) {
379 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
380 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
381 }
382 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
383
384 /* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */
385
386 /* TODO: turn off hw wep on rtl8180 */
387
388 rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
389
390 if (priv->r8185) {
391 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
392 rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
393 rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
394
395 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
396
397 /* TODO: set ClkRun enable? necessary? */
398 reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
399 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
400 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
401 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
402 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
403 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
404 } else {
405 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x1);
406 rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
407
408 rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
409 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
410 }
411
412 priv->rf->init(dev);
413 if (priv->r8185)
414 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
415 return 0;
416 }
417
418 static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
419 {
420 struct rtl8180_priv *priv = dev->priv;
421 struct rtl8180_rx_desc *entry;
422 int i;
423
424 priv->rx_ring = pci_alloc_consistent(priv->pdev,
425 sizeof(*priv->rx_ring) * 32,
426 &priv->rx_ring_dma);
427
428 if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
429 printk(KERN_ERR "%s: Cannot allocate RX ring\n",
430 wiphy_name(dev->wiphy));
431 return -ENOMEM;
432 }
433
434 memset(priv->rx_ring, 0, sizeof(*priv->rx_ring) * 32);
435 priv->rx_idx = 0;
436
437 for (i = 0; i < 32; i++) {
438 struct sk_buff *skb = dev_alloc_skb(MAX_RX_SIZE);
439 dma_addr_t *mapping;
440 entry = &priv->rx_ring[i];
441 if (!skb)
442 return 0;
443
444 priv->rx_buf[i] = skb;
445 mapping = (dma_addr_t *)skb->cb;
446 *mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb),
447 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
448 entry->rx_buf = cpu_to_le32(*mapping);
449 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
450 MAX_RX_SIZE);
451 }
452 entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
453 return 0;
454 }
455
456 static void rtl8180_free_rx_ring(struct ieee80211_hw *dev)
457 {
458 struct rtl8180_priv *priv = dev->priv;
459 int i;
460
461 for (i = 0; i < 32; i++) {
462 struct sk_buff *skb = priv->rx_buf[i];
463 if (!skb)
464 continue;
465
466 pci_unmap_single(priv->pdev,
467 *((dma_addr_t *)skb->cb),
468 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
469 kfree_skb(skb);
470 }
471
472 pci_free_consistent(priv->pdev, sizeof(*priv->rx_ring) * 32,
473 priv->rx_ring, priv->rx_ring_dma);
474 priv->rx_ring = NULL;
475 }
476
477 static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
478 unsigned int prio, unsigned int entries)
479 {
480 struct rtl8180_priv *priv = dev->priv;
481 struct rtl8180_tx_desc *ring;
482 dma_addr_t dma;
483 int i;
484
485 ring = pci_alloc_consistent(priv->pdev, sizeof(*ring) * entries, &dma);
486 if (!ring || (unsigned long)ring & 0xFF) {
487 printk(KERN_ERR "%s: Cannot allocate TX ring (prio = %d)\n",
488 wiphy_name(dev->wiphy), prio);
489 return -ENOMEM;
490 }
491
492 memset(ring, 0, sizeof(*ring)*entries);
493 priv->tx_ring[prio].desc = ring;
494 priv->tx_ring[prio].dma = dma;
495 priv->tx_ring[prio].idx = 0;
496 priv->tx_ring[prio].entries = entries;
497 skb_queue_head_init(&priv->tx_ring[prio].queue);
498
499 for (i = 0; i < entries; i++)
500 ring[i].next_tx_desc =
501 cpu_to_le32((u32)dma + ((i + 1) % entries) * sizeof(*ring));
502
503 return 0;
504 }
505
506 static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio)
507 {
508 struct rtl8180_priv *priv = dev->priv;
509 struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
510
511 while (skb_queue_len(&ring->queue)) {
512 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
513 struct sk_buff *skb = __skb_dequeue(&ring->queue);
514
515 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
516 skb->len, PCI_DMA_TODEVICE);
517 kfree_skb(skb);
518 ring->idx = (ring->idx + 1) % ring->entries;
519 }
520
521 pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries,
522 ring->desc, ring->dma);
523 ring->desc = NULL;
524 }
525
526 static int rtl8180_start(struct ieee80211_hw *dev)
527 {
528 struct rtl8180_priv *priv = dev->priv;
529 int ret, i;
530 u32 reg;
531
532 ret = rtl8180_init_rx_ring(dev);
533 if (ret)
534 return ret;
535
536 for (i = 0; i < 4; i++)
537 if ((ret = rtl8180_init_tx_ring(dev, i, 16)))
538 goto err_free_rings;
539
540 ret = rtl8180_init_hw(dev);
541 if (ret)
542 goto err_free_rings;
543
544 rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
545 rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
546 rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
547 rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
548 rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
549
550 ret = request_irq(priv->pdev->irq, &rtl8180_interrupt,
551 IRQF_SHARED, KBUILD_MODNAME, dev);
552 if (ret) {
553 printk(KERN_ERR "%s: failed to register IRQ handler\n",
554 wiphy_name(dev->wiphy));
555 goto err_free_rings;
556 }
557
558 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
559
560 rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
561 rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
562
563 reg = RTL818X_RX_CONF_ONLYERLPKT |
564 RTL818X_RX_CONF_RX_AUTORESETPHY |
565 RTL818X_RX_CONF_MGMT |
566 RTL818X_RX_CONF_DATA |
567 (7 << 8 /* MAX RX DMA */) |
568 RTL818X_RX_CONF_BROADCAST |
569 RTL818X_RX_CONF_NICMAC;
570
571 if (priv->r8185)
572 reg |= RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2;
573 else {
574 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
575 ? RTL818X_RX_CONF_CSDM1 : 0;
576 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
577 ? RTL818X_RX_CONF_CSDM2 : 0;
578 }
579
580 priv->rx_conf = reg;
581 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
582
583 if (priv->r8185) {
584 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
585 reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
586 reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
587 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
588
589 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
590 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
591 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
592 reg |= RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
593 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
594
595 /* disable early TX */
596 rtl818x_iowrite8(priv, (u8 __iomem *)priv->map + 0xec, 0x3f);
597 }
598
599 reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
600 reg |= (6 << 21 /* MAX TX DMA */) |
601 RTL818X_TX_CONF_NO_ICV;
602
603 if (priv->r8185)
604 reg &= ~RTL818X_TX_CONF_PROBE_DTS;
605 else
606 reg &= ~RTL818X_TX_CONF_HW_SEQNUM;
607
608 /* different meaning, same value on both rtl8185 and rtl8180 */
609 reg &= ~RTL818X_TX_CONF_SAT_HWPLCP;
610
611 rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
612
613 reg = rtl818x_ioread8(priv, &priv->map->CMD);
614 reg |= RTL818X_CMD_RX_ENABLE;
615 reg |= RTL818X_CMD_TX_ENABLE;
616 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
617
618 priv->mode = NL80211_IFTYPE_MONITOR;
619 return 0;
620
621 err_free_rings:
622 rtl8180_free_rx_ring(dev);
623 for (i = 0; i < 4; i++)
624 if (priv->tx_ring[i].desc)
625 rtl8180_free_tx_ring(dev, i);
626
627 return ret;
628 }
629
630 static void rtl8180_stop(struct ieee80211_hw *dev)
631 {
632 struct rtl8180_priv *priv = dev->priv;
633 u8 reg;
634 int i;
635
636 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
637
638 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
639
640 reg = rtl818x_ioread8(priv, &priv->map->CMD);
641 reg &= ~RTL818X_CMD_TX_ENABLE;
642 reg &= ~RTL818X_CMD_RX_ENABLE;
643 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
644
645 priv->rf->stop(dev);
646
647 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
648 reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
649 rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
650 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
651
652 free_irq(priv->pdev->irq, dev);
653
654 rtl8180_free_rx_ring(dev);
655 for (i = 0; i < 4; i++)
656 rtl8180_free_tx_ring(dev, i);
657 }
658
659 static int rtl8180_add_interface(struct ieee80211_hw *dev,
660 struct ieee80211_if_init_conf *conf)
661 {
662 struct rtl8180_priv *priv = dev->priv;
663
664 if (priv->mode != NL80211_IFTYPE_MONITOR)
665 return -EOPNOTSUPP;
666
667 switch (conf->type) {
668 case NL80211_IFTYPE_STATION:
669 priv->mode = conf->type;
670 break;
671 default:
672 return -EOPNOTSUPP;
673 }
674
675 priv->vif = conf->vif;
676
677 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
678 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->MAC[0],
679 le32_to_cpu(*(__le32 *)conf->mac_addr));
680 rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->MAC[4],
681 le16_to_cpu(*(__le16 *)(conf->mac_addr + 4)));
682 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
683
684 return 0;
685 }
686
687 static void rtl8180_remove_interface(struct ieee80211_hw *dev,
688 struct ieee80211_if_init_conf *conf)
689 {
690 struct rtl8180_priv *priv = dev->priv;
691 priv->mode = NL80211_IFTYPE_MONITOR;
692 priv->vif = NULL;
693 }
694
695 static int rtl8180_config(struct ieee80211_hw *dev, u32 changed)
696 {
697 struct rtl8180_priv *priv = dev->priv;
698 struct ieee80211_conf *conf = &dev->conf;
699
700 priv->rf->set_chan(dev, conf);
701
702 return 0;
703 }
704
705 static int rtl8180_config_interface(struct ieee80211_hw *dev,
706 struct ieee80211_vif *vif,
707 struct ieee80211_if_conf *conf)
708 {
709 struct rtl8180_priv *priv = dev->priv;
710 int i;
711
712 for (i = 0; i < ETH_ALEN; i++)
713 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
714
715 if (is_valid_ether_addr(conf->bssid))
716 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
717 else
718 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
719
720 return 0;
721 }
722
723 static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
724 struct ieee80211_vif *vif,
725 struct ieee80211_bss_conf *info,
726 u32 changed)
727 {
728 struct rtl8180_priv *priv = dev->priv;
729
730 if (changed & BSS_CHANGED_ERP_SLOT && priv->rf->conf_erp)
731 priv->rf->conf_erp(dev, info);
732 }
733
734 static void rtl8180_configure_filter(struct ieee80211_hw *dev,
735 unsigned int changed_flags,
736 unsigned int *total_flags,
737 int mc_count, struct dev_addr_list *mclist)
738 {
739 struct rtl8180_priv *priv = dev->priv;
740
741 if (changed_flags & FIF_FCSFAIL)
742 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
743 if (changed_flags & FIF_CONTROL)
744 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
745 if (changed_flags & FIF_OTHER_BSS)
746 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
747 if (*total_flags & FIF_ALLMULTI || mc_count > 0)
748 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
749 else
750 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
751
752 *total_flags = 0;
753
754 if (priv->rx_conf & RTL818X_RX_CONF_FCS)
755 *total_flags |= FIF_FCSFAIL;
756 if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
757 *total_flags |= FIF_CONTROL;
758 if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
759 *total_flags |= FIF_OTHER_BSS;
760 if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
761 *total_flags |= FIF_ALLMULTI;
762
763 rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
764 }
765
766 static const struct ieee80211_ops rtl8180_ops = {
767 .tx = rtl8180_tx,
768 .start = rtl8180_start,
769 .stop = rtl8180_stop,
770 .add_interface = rtl8180_add_interface,
771 .remove_interface = rtl8180_remove_interface,
772 .config = rtl8180_config,
773 .config_interface = rtl8180_config_interface,
774 .bss_info_changed = rtl8180_bss_info_changed,
775 .configure_filter = rtl8180_configure_filter,
776 };
777
778 static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
779 {
780 struct ieee80211_hw *dev = eeprom->data;
781 struct rtl8180_priv *priv = dev->priv;
782 u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
783
784 eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
785 eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
786 eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
787 eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
788 }
789
790 static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom)
791 {
792 struct ieee80211_hw *dev = eeprom->data;
793 struct rtl8180_priv *priv = dev->priv;
794 u8 reg = 2 << 6;
795
796 if (eeprom->reg_data_in)
797 reg |= RTL818X_EEPROM_CMD_WRITE;
798 if (eeprom->reg_data_out)
799 reg |= RTL818X_EEPROM_CMD_READ;
800 if (eeprom->reg_data_clock)
801 reg |= RTL818X_EEPROM_CMD_CK;
802 if (eeprom->reg_chip_select)
803 reg |= RTL818X_EEPROM_CMD_CS;
804
805 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
806 rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
807 udelay(10);
808 }
809
810 static int __devinit rtl8180_probe(struct pci_dev *pdev,
811 const struct pci_device_id *id)
812 {
813 struct ieee80211_hw *dev;
814 struct rtl8180_priv *priv;
815 unsigned long mem_addr, mem_len;
816 unsigned int io_addr, io_len;
817 int err, i;
818 struct eeprom_93cx6 eeprom;
819 const char *chip_name, *rf_name = NULL;
820 u32 reg;
821 u16 eeprom_val;
822
823 err = pci_enable_device(pdev);
824 if (err) {
825 printk(KERN_ERR "%s (rtl8180): Cannot enable new PCI device\n",
826 pci_name(pdev));
827 return err;
828 }
829
830 err = pci_request_regions(pdev, KBUILD_MODNAME);
831 if (err) {
832 printk(KERN_ERR "%s (rtl8180): Cannot obtain PCI resources\n",
833 pci_name(pdev));
834 return err;
835 }
836
837 io_addr = pci_resource_start(pdev, 0);
838 io_len = pci_resource_len(pdev, 0);
839 mem_addr = pci_resource_start(pdev, 1);
840 mem_len = pci_resource_len(pdev, 1);
841
842 if (mem_len < sizeof(struct rtl818x_csr) ||
843 io_len < sizeof(struct rtl818x_csr)) {
844 printk(KERN_ERR "%s (rtl8180): Too short PCI resources\n",
845 pci_name(pdev));
846 err = -ENOMEM;
847 goto err_free_reg;
848 }
849
850 if ((err = pci_set_dma_mask(pdev, 0xFFFFFF00ULL)) ||
851 (err = pci_set_consistent_dma_mask(pdev, 0xFFFFFF00ULL))) {
852 printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n",
853 pci_name(pdev));
854 goto err_free_reg;
855 }
856
857 pci_set_master(pdev);
858
859 dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8180_ops);
860 if (!dev) {
861 printk(KERN_ERR "%s (rtl8180): ieee80211 alloc failed\n",
862 pci_name(pdev));
863 err = -ENOMEM;
864 goto err_free_reg;
865 }
866
867 priv = dev->priv;
868 priv->pdev = pdev;
869
870 dev->max_rates = 2;
871 SET_IEEE80211_DEV(dev, &pdev->dev);
872 pci_set_drvdata(pdev, dev);
873
874 priv->map = pci_iomap(pdev, 1, mem_len);
875 if (!priv->map)
876 priv->map = pci_iomap(pdev, 0, io_len);
877
878 if (!priv->map) {
879 printk(KERN_ERR "%s (rtl8180): Cannot map device memory\n",
880 pci_name(pdev));
881 goto err_free_dev;
882 }
883
884 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
885 BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
886
887 memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
888 memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
889
890 priv->band.band = IEEE80211_BAND_2GHZ;
891 priv->band.channels = priv->channels;
892 priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
893 priv->band.bitrates = priv->rates;
894 priv->band.n_bitrates = 4;
895 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
896
897 dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
898 IEEE80211_HW_RX_INCLUDES_FCS |
899 IEEE80211_HW_SIGNAL_UNSPEC;
900 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
901 dev->queues = 1;
902 dev->max_signal = 65;
903
904 reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
905 reg &= RTL818X_TX_CONF_HWVER_MASK;
906 switch (reg) {
907 case RTL818X_TX_CONF_R8180_ABCD:
908 chip_name = "RTL8180";
909 break;
910 case RTL818X_TX_CONF_R8180_F:
911 chip_name = "RTL8180vF";
912 break;
913 case RTL818X_TX_CONF_R8185_ABC:
914 chip_name = "RTL8185";
915 break;
916 case RTL818X_TX_CONF_R8185_D:
917 chip_name = "RTL8185vD";
918 break;
919 default:
920 printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
921 pci_name(pdev), reg >> 25);
922 goto err_iounmap;
923 }
924
925 priv->r8185 = reg & RTL818X_TX_CONF_R8185_ABC;
926 if (priv->r8185) {
927 priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
928 pci_try_set_mwi(pdev);
929 }
930
931 eeprom.data = dev;
932 eeprom.register_read = rtl8180_eeprom_register_read;
933 eeprom.register_write = rtl8180_eeprom_register_write;
934 if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
935 eeprom.width = PCI_EEPROM_WIDTH_93C66;
936 else
937 eeprom.width = PCI_EEPROM_WIDTH_93C46;
938
939 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_PROGRAM);
940 rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
941 udelay(10);
942
943 eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val);
944 eeprom_val &= 0xFF;
945 switch (eeprom_val) {
946 case 1: rf_name = "Intersil";
947 break;
948 case 2: rf_name = "RFMD";
949 break;
950 case 3: priv->rf = &sa2400_rf_ops;
951 break;
952 case 4: priv->rf = &max2820_rf_ops;
953 break;
954 case 5: priv->rf = &grf5101_rf_ops;
955 break;
956 case 9: priv->rf = rtl8180_detect_rf(dev);
957 break;
958 case 10:
959 rf_name = "RTL8255";
960 break;
961 default:
962 printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
963 pci_name(pdev), eeprom_val);
964 goto err_iounmap;
965 }
966
967 if (!priv->rf) {
968 printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
969 pci_name(pdev), rf_name);
970 goto err_iounmap;
971 }
972
973 eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val);
974 priv->csthreshold = eeprom_val >> 8;
975 if (!priv->r8185) {
976 __le32 anaparam;
977 eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2);
978 priv->anaparam = le32_to_cpu(anaparam);
979 eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam);
980 }
981
982 eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)dev->wiphy->perm_addr, 3);
983 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
984 printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using"
985 " randomly generated MAC addr\n", pci_name(pdev));
986 random_ether_addr(dev->wiphy->perm_addr);
987 }
988
989 /* CCK TX power */
990 for (i = 0; i < 14; i += 2) {
991 u16 txpwr;
992 eeprom_93cx6_read(&eeprom, 0x10 + (i >> 1), &txpwr);
993 priv->channels[i].hw_value = txpwr & 0xFF;
994 priv->channels[i + 1].hw_value = txpwr >> 8;
995 }
996
997 /* OFDM TX power */
998 if (priv->r8185) {
999 for (i = 0; i < 14; i += 2) {
1000 u16 txpwr;
1001 eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr);
1002 priv->channels[i].hw_value |= (txpwr & 0xFF) << 8;
1003 priv->channels[i + 1].hw_value |= txpwr & 0xFF00;
1004 }
1005 }
1006
1007 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1008
1009 spin_lock_init(&priv->lock);
1010
1011 err = ieee80211_register_hw(dev);
1012 if (err) {
1013 printk(KERN_ERR "%s (rtl8180): Cannot register device\n",
1014 pci_name(pdev));
1015 goto err_iounmap;
1016 }
1017
1018 printk(KERN_INFO "%s: hwaddr %pM, %s + %s\n",
1019 wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1020 chip_name, priv->rf->name);
1021
1022 return 0;
1023
1024 err_iounmap:
1025 iounmap(priv->map);
1026
1027 err_free_dev:
1028 pci_set_drvdata(pdev, NULL);
1029 ieee80211_free_hw(dev);
1030
1031 err_free_reg:
1032 pci_release_regions(pdev);
1033 pci_disable_device(pdev);
1034 return err;
1035 }
1036
1037 static void __devexit rtl8180_remove(struct pci_dev *pdev)
1038 {
1039 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1040 struct rtl8180_priv *priv;
1041
1042 if (!dev)
1043 return;
1044
1045 ieee80211_unregister_hw(dev);
1046
1047 priv = dev->priv;
1048
1049 pci_iounmap(pdev, priv->map);
1050 pci_release_regions(pdev);
1051 pci_disable_device(pdev);
1052 ieee80211_free_hw(dev);
1053 }
1054
1055 #ifdef CONFIG_PM
1056 static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state)
1057 {
1058 pci_save_state(pdev);
1059 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1060 return 0;
1061 }
1062
1063 static int rtl8180_resume(struct pci_dev *pdev)
1064 {
1065 pci_set_power_state(pdev, PCI_D0);
1066 pci_restore_state(pdev);
1067 return 0;
1068 }
1069
1070 #endif /* CONFIG_PM */
1071
1072 static struct pci_driver rtl8180_driver = {
1073 .name = KBUILD_MODNAME,
1074 .id_table = rtl8180_table,
1075 .probe = rtl8180_probe,
1076 .remove = __devexit_p(rtl8180_remove),
1077 #ifdef CONFIG_PM
1078 .suspend = rtl8180_suspend,
1079 .resume = rtl8180_resume,
1080 #endif /* CONFIG_PM */
1081 };
1082
1083 static int __init rtl8180_init(void)
1084 {
1085 return pci_register_driver(&rtl8180_driver);
1086 }
1087
1088 static void __exit rtl8180_exit(void)
1089 {
1090 pci_unregister_driver(&rtl8180_driver);
1091 }
1092
1093 module_init(rtl8180_init);
1094 module_exit(rtl8180_exit);
Linux kernel - Deliverables
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