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[mirror_ubuntu-artful-kernel.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/slab.h>
21 #include <linux/delay.h>
22 #include <linux/etherdevice.h>
23 #include <linux/eeprom_93cx6.h>
24 #include <net/mac80211.h>
25
26 #include "rtl8180.h"
27 #include "rtl8180_rtl8225.h"
28 #include "rtl8180_sa2400.h"
29 #include "rtl8180_max2820.h"
30 #include "rtl8180_grf5101.h"
31
32 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
33 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
34 MODULE_DESCRIPTION("RTL8180 / RTL8185 PCI wireless driver");
35 MODULE_LICENSE("GPL");
36
37 static DEFINE_PCI_DEVICE_TABLE(rtl8180_table) = {
38 /* rtl8185 */
39 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8185) },
40 { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x700f) },
41 { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x701f) },
42
43 /* rtl8180 */
44 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8180) },
45 { PCI_DEVICE(0x1799, 0x6001) },
46 { PCI_DEVICE(0x1799, 0x6020) },
47 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x3300) },
48 { }
49 };
50
51 MODULE_DEVICE_TABLE(pci, rtl8180_table);
52
53 static const struct ieee80211_rate rtl818x_rates[] = {
54 { .bitrate = 10, .hw_value = 0, },
55 { .bitrate = 20, .hw_value = 1, },
56 { .bitrate = 55, .hw_value = 2, },
57 { .bitrate = 110, .hw_value = 3, },
58 { .bitrate = 60, .hw_value = 4, },
59 { .bitrate = 90, .hw_value = 5, },
60 { .bitrate = 120, .hw_value = 6, },
61 { .bitrate = 180, .hw_value = 7, },
62 { .bitrate = 240, .hw_value = 8, },
63 { .bitrate = 360, .hw_value = 9, },
64 { .bitrate = 480, .hw_value = 10, },
65 { .bitrate = 540, .hw_value = 11, },
66 };
67
68 static const struct ieee80211_channel rtl818x_channels[] = {
69 { .center_freq = 2412 },
70 { .center_freq = 2417 },
71 { .center_freq = 2422 },
72 { .center_freq = 2427 },
73 { .center_freq = 2432 },
74 { .center_freq = 2437 },
75 { .center_freq = 2442 },
76 { .center_freq = 2447 },
77 { .center_freq = 2452 },
78 { .center_freq = 2457 },
79 { .center_freq = 2462 },
80 { .center_freq = 2467 },
81 { .center_freq = 2472 },
82 { .center_freq = 2484 },
83 };
84
85
86 void rtl8180_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
87 {
88 struct rtl8180_priv *priv = dev->priv;
89 int i = 10;
90 u32 buf;
91
92 buf = (data << 8) | addr;
93
94 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf | 0x80);
95 while (i--) {
96 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf);
97 if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF))
98 return;
99 }
100 }
101
102 static void rtl8180_handle_rx(struct ieee80211_hw *dev)
103 {
104 struct rtl8180_priv *priv = dev->priv;
105 unsigned int count = 32;
106
107 while (count--) {
108 struct rtl8180_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
109 struct sk_buff *skb = priv->rx_buf[priv->rx_idx];
110 u32 flags = le32_to_cpu(entry->flags);
111
112 if (flags & RTL818X_RX_DESC_FLAG_OWN)
113 return;
114
115 if (unlikely(flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL |
116 RTL818X_RX_DESC_FLAG_FOF |
117 RTL818X_RX_DESC_FLAG_RX_ERR)))
118 goto done;
119 else {
120 u32 flags2 = le32_to_cpu(entry->flags2);
121 struct ieee80211_rx_status rx_status = {0};
122 struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_SIZE);
123
124 if (unlikely(!new_skb))
125 goto done;
126
127 pci_unmap_single(priv->pdev,
128 *((dma_addr_t *)skb->cb),
129 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
130 skb_put(skb, flags & 0xFFF);
131
132 rx_status.antenna = (flags2 >> 15) & 1;
133 /* TODO: improve signal/rssi reporting */
134 rx_status.signal = (flags2 >> 8) & 0x7F;
135 /* XXX: is this correct? */
136 rx_status.rate_idx = (flags >> 20) & 0xF;
137 rx_status.freq = dev->conf.channel->center_freq;
138 rx_status.band = dev->conf.channel->band;
139 rx_status.mactime = le64_to_cpu(entry->tsft);
140 rx_status.flag |= RX_FLAG_TSFT;
141 if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
142 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
143
144 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
145 ieee80211_rx_irqsafe(dev, skb);
146
147 skb = new_skb;
148 priv->rx_buf[priv->rx_idx] = skb;
149 *((dma_addr_t *) skb->cb) =
150 pci_map_single(priv->pdev, skb_tail_pointer(skb),
151 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
152 }
153
154 done:
155 entry->rx_buf = cpu_to_le32(*((dma_addr_t *)skb->cb));
156 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
157 MAX_RX_SIZE);
158 if (priv->rx_idx == 31)
159 entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
160 priv->rx_idx = (priv->rx_idx + 1) % 32;
161 }
162 }
163
164 static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
165 {
166 struct rtl8180_priv *priv = dev->priv;
167 struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
168
169 while (skb_queue_len(&ring->queue)) {
170 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
171 struct sk_buff *skb;
172 struct ieee80211_tx_info *info;
173 u32 flags = le32_to_cpu(entry->flags);
174
175 if (flags & RTL818X_TX_DESC_FLAG_OWN)
176 return;
177
178 ring->idx = (ring->idx + 1) % ring->entries;
179 skb = __skb_dequeue(&ring->queue);
180 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
181 skb->len, PCI_DMA_TODEVICE);
182
183 info = IEEE80211_SKB_CB(skb);
184 ieee80211_tx_info_clear_status(info);
185
186 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
187 (flags & RTL818X_TX_DESC_FLAG_TX_OK))
188 info->flags |= IEEE80211_TX_STAT_ACK;
189
190 info->status.rates[0].count = (flags & 0xFF) + 1;
191
192 ieee80211_tx_status_irqsafe(dev, skb);
193 if (ring->entries - skb_queue_len(&ring->queue) == 2)
194 ieee80211_wake_queue(dev, prio);
195 }
196 }
197
198 static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
199 {
200 struct ieee80211_hw *dev = dev_id;
201 struct rtl8180_priv *priv = dev->priv;
202 u16 reg;
203
204 spin_lock(&priv->lock);
205 reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
206 if (unlikely(reg == 0xFFFF)) {
207 spin_unlock(&priv->lock);
208 return IRQ_HANDLED;
209 }
210
211 rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
212
213 if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
214 rtl8180_handle_tx(dev, 3);
215
216 if (reg & (RTL818X_INT_TXH_OK | RTL818X_INT_TXH_ERR))
217 rtl8180_handle_tx(dev, 2);
218
219 if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR))
220 rtl8180_handle_tx(dev, 1);
221
222 if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
223 rtl8180_handle_tx(dev, 0);
224
225 if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
226 rtl8180_handle_rx(dev);
227
228 spin_unlock(&priv->lock);
229
230 return IRQ_HANDLED;
231 }
232
233 static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
234 {
235 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
236 struct rtl8180_priv *priv = dev->priv;
237 struct rtl8180_tx_ring *ring;
238 struct rtl8180_tx_desc *entry;
239 unsigned long flags;
240 unsigned int idx, prio;
241 dma_addr_t mapping;
242 u32 tx_flags;
243 u8 rc_flags;
244 u16 plcp_len = 0;
245 __le16 rts_duration = 0;
246
247 prio = skb_get_queue_mapping(skb);
248 ring = &priv->tx_ring[prio];
249
250 mapping = pci_map_single(priv->pdev, skb->data,
251 skb->len, PCI_DMA_TODEVICE);
252
253 tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
254 RTL818X_TX_DESC_FLAG_LS |
255 (ieee80211_get_tx_rate(dev, info)->hw_value << 24) |
256 skb->len;
257
258 if (priv->r8185)
259 tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
260 RTL818X_TX_DESC_FLAG_NO_ENC;
261
262 rc_flags = info->control.rates[0].flags;
263 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
264 tx_flags |= RTL818X_TX_DESC_FLAG_RTS;
265 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
266 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
267 tx_flags |= RTL818X_TX_DESC_FLAG_CTS;
268 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
269 }
270
271 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
272 rts_duration = ieee80211_rts_duration(dev, priv->vif, skb->len,
273 info);
274
275 if (!priv->r8185) {
276 unsigned int remainder;
277
278 plcp_len = DIV_ROUND_UP(16 * (skb->len + 4),
279 (ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
280 remainder = (16 * (skb->len + 4)) %
281 ((ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
282 if (remainder <= 6)
283 plcp_len |= 1 << 15;
284 }
285
286 spin_lock_irqsave(&priv->lock, flags);
287 idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
288 entry = &ring->desc[idx];
289
290 entry->rts_duration = rts_duration;
291 entry->plcp_len = cpu_to_le16(plcp_len);
292 entry->tx_buf = cpu_to_le32(mapping);
293 entry->frame_len = cpu_to_le32(skb->len);
294 entry->flags2 = info->control.rates[1].idx >= 0 ?
295 ieee80211_get_alt_retry_rate(dev, info, 0)->bitrate << 4 : 0;
296 entry->retry_limit = info->control.rates[0].count;
297 entry->flags = cpu_to_le32(tx_flags);
298 __skb_queue_tail(&ring->queue, skb);
299 if (ring->entries - skb_queue_len(&ring->queue) < 2)
300 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
301 spin_unlock_irqrestore(&priv->lock, flags);
302
303 rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << (prio + 4)));
304
305 return 0;
306 }
307
308 void rtl8180_set_anaparam(struct rtl8180_priv *priv, u32 anaparam)
309 {
310 u8 reg;
311
312 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
313 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
314 rtl818x_iowrite8(priv, &priv->map->CONFIG3,
315 reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
316 rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
317 rtl818x_iowrite8(priv, &priv->map->CONFIG3,
318 reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
319 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
320 }
321
322 static int rtl8180_init_hw(struct ieee80211_hw *dev)
323 {
324 struct rtl8180_priv *priv = dev->priv;
325 u16 reg;
326
327 rtl818x_iowrite8(priv, &priv->map->CMD, 0);
328 rtl818x_ioread8(priv, &priv->map->CMD);
329 msleep(10);
330
331 /* reset */
332 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
333 rtl818x_ioread8(priv, &priv->map->CMD);
334
335 reg = rtl818x_ioread8(priv, &priv->map->CMD);
336 reg &= (1 << 1);
337 reg |= RTL818X_CMD_RESET;
338 rtl818x_iowrite8(priv, &priv->map->CMD, RTL818X_CMD_RESET);
339 rtl818x_ioread8(priv, &priv->map->CMD);
340 msleep(200);
341
342 /* check success of reset */
343 if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
344 printk(KERN_ERR "%s: reset timeout!\n", wiphy_name(dev->wiphy));
345 return -ETIMEDOUT;
346 }
347
348 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
349 rtl818x_ioread8(priv, &priv->map->CMD);
350 msleep(200);
351
352 if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
353 /* For cardbus */
354 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
355 reg |= 1 << 1;
356 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
357 reg = rtl818x_ioread16(priv, &priv->map->FEMR);
358 reg |= (1 << 15) | (1 << 14) | (1 << 4);
359 rtl818x_iowrite16(priv, &priv->map->FEMR, reg);
360 }
361
362 rtl818x_iowrite8(priv, &priv->map->MSR, 0);
363
364 if (!priv->r8185)
365 rtl8180_set_anaparam(priv, priv->anaparam);
366
367 rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
368 rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
369 rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
370 rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
371 rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
372
373 /* TODO: necessary? specs indicate not */
374 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
375 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
376 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
377 if (priv->r8185) {
378 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
379 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
380 }
381 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
382
383 /* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */
384
385 /* TODO: turn off hw wep on rtl8180 */
386
387 rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
388
389 if (priv->r8185) {
390 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
391 rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
392 rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
393
394 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
395
396 /* TODO: set ClkRun enable? necessary? */
397 reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
398 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
399 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
400 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
401 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
402 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
403 } else {
404 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x1);
405 rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
406
407 rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
408 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
409 }
410
411 priv->rf->init(dev);
412 if (priv->r8185)
413 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
414 return 0;
415 }
416
417 static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
418 {
419 struct rtl8180_priv *priv = dev->priv;
420 struct rtl8180_rx_desc *entry;
421 int i;
422
423 priv->rx_ring = pci_alloc_consistent(priv->pdev,
424 sizeof(*priv->rx_ring) * 32,
425 &priv->rx_ring_dma);
426
427 if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
428 printk(KERN_ERR "%s: Cannot allocate RX ring\n",
429 wiphy_name(dev->wiphy));
430 return -ENOMEM;
431 }
432
433 memset(priv->rx_ring, 0, sizeof(*priv->rx_ring) * 32);
434 priv->rx_idx = 0;
435
436 for (i = 0; i < 32; i++) {
437 struct sk_buff *skb = dev_alloc_skb(MAX_RX_SIZE);
438 dma_addr_t *mapping;
439 entry = &priv->rx_ring[i];
440 if (!skb)
441 return 0;
442
443 priv->rx_buf[i] = skb;
444 mapping = (dma_addr_t *)skb->cb;
445 *mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb),
446 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
447 entry->rx_buf = cpu_to_le32(*mapping);
448 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
449 MAX_RX_SIZE);
450 }
451 entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
452 return 0;
453 }
454
455 static void rtl8180_free_rx_ring(struct ieee80211_hw *dev)
456 {
457 struct rtl8180_priv *priv = dev->priv;
458 int i;
459
460 for (i = 0; i < 32; i++) {
461 struct sk_buff *skb = priv->rx_buf[i];
462 if (!skb)
463 continue;
464
465 pci_unmap_single(priv->pdev,
466 *((dma_addr_t *)skb->cb),
467 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
468 kfree_skb(skb);
469 }
470
471 pci_free_consistent(priv->pdev, sizeof(*priv->rx_ring) * 32,
472 priv->rx_ring, priv->rx_ring_dma);
473 priv->rx_ring = NULL;
474 }
475
476 static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
477 unsigned int prio, unsigned int entries)
478 {
479 struct rtl8180_priv *priv = dev->priv;
480 struct rtl8180_tx_desc *ring;
481 dma_addr_t dma;
482 int i;
483
484 ring = pci_alloc_consistent(priv->pdev, sizeof(*ring) * entries, &dma);
485 if (!ring || (unsigned long)ring & 0xFF) {
486 printk(KERN_ERR "%s: Cannot allocate TX ring (prio = %d)\n",
487 wiphy_name(dev->wiphy), prio);
488 return -ENOMEM;
489 }
490
491 memset(ring, 0, sizeof(*ring)*entries);
492 priv->tx_ring[prio].desc = ring;
493 priv->tx_ring[prio].dma = dma;
494 priv->tx_ring[prio].idx = 0;
495 priv->tx_ring[prio].entries = entries;
496 skb_queue_head_init(&priv->tx_ring[prio].queue);
497
498 for (i = 0; i < entries; i++)
499 ring[i].next_tx_desc =
500 cpu_to_le32((u32)dma + ((i + 1) % entries) * sizeof(*ring));
501
502 return 0;
503 }
504
505 static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio)
506 {
507 struct rtl8180_priv *priv = dev->priv;
508 struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
509
510 while (skb_queue_len(&ring->queue)) {
511 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
512 struct sk_buff *skb = __skb_dequeue(&ring->queue);
513
514 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
515 skb->len, PCI_DMA_TODEVICE);
516 kfree_skb(skb);
517 ring->idx = (ring->idx + 1) % ring->entries;
518 }
519
520 pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries,
521 ring->desc, ring->dma);
522 ring->desc = NULL;
523 }
524
525 static int rtl8180_start(struct ieee80211_hw *dev)
526 {
527 struct rtl8180_priv *priv = dev->priv;
528 int ret, i;
529 u32 reg;
530
531 ret = rtl8180_init_rx_ring(dev);
532 if (ret)
533 return ret;
534
535 for (i = 0; i < 4; i++)
536 if ((ret = rtl8180_init_tx_ring(dev, i, 16)))
537 goto err_free_rings;
538
539 ret = rtl8180_init_hw(dev);
540 if (ret)
541 goto err_free_rings;
542
543 rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
544 rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
545 rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
546 rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
547 rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
548
549 ret = request_irq(priv->pdev->irq, rtl8180_interrupt,
550 IRQF_SHARED, KBUILD_MODNAME, dev);
551 if (ret) {
552 printk(KERN_ERR "%s: failed to register IRQ handler\n",
553 wiphy_name(dev->wiphy));
554 goto err_free_rings;
555 }
556
557 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
558
559 rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
560 rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
561
562 reg = RTL818X_RX_CONF_ONLYERLPKT |
563 RTL818X_RX_CONF_RX_AUTORESETPHY |
564 RTL818X_RX_CONF_MGMT |
565 RTL818X_RX_CONF_DATA |
566 (7 << 8 /* MAX RX DMA */) |
567 RTL818X_RX_CONF_BROADCAST |
568 RTL818X_RX_CONF_NICMAC;
569
570 if (priv->r8185)
571 reg |= RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2;
572 else {
573 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
574 ? RTL818X_RX_CONF_CSDM1 : 0;
575 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
576 ? RTL818X_RX_CONF_CSDM2 : 0;
577 }
578
579 priv->rx_conf = reg;
580 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
581
582 if (priv->r8185) {
583 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
584 reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
585 reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
586 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
587
588 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
589 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
590 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
591 reg |= RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
592 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
593
594 /* disable early TX */
595 rtl818x_iowrite8(priv, (u8 __iomem *)priv->map + 0xec, 0x3f);
596 }
597
598 reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
599 reg |= (6 << 21 /* MAX TX DMA */) |
600 RTL818X_TX_CONF_NO_ICV;
601
602 if (priv->r8185)
603 reg &= ~RTL818X_TX_CONF_PROBE_DTS;
604 else
605 reg &= ~RTL818X_TX_CONF_HW_SEQNUM;
606
607 /* different meaning, same value on both rtl8185 and rtl8180 */
608 reg &= ~RTL818X_TX_CONF_SAT_HWPLCP;
609
610 rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
611
612 reg = rtl818x_ioread8(priv, &priv->map->CMD);
613 reg |= RTL818X_CMD_RX_ENABLE;
614 reg |= RTL818X_CMD_TX_ENABLE;
615 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
616
617 return 0;
618
619 err_free_rings:
620 rtl8180_free_rx_ring(dev);
621 for (i = 0; i < 4; i++)
622 if (priv->tx_ring[i].desc)
623 rtl8180_free_tx_ring(dev, i);
624
625 return ret;
626 }
627
628 static void rtl8180_stop(struct ieee80211_hw *dev)
629 {
630 struct rtl8180_priv *priv = dev->priv;
631 u8 reg;
632 int i;
633
634 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
635
636 reg = rtl818x_ioread8(priv, &priv->map->CMD);
637 reg &= ~RTL818X_CMD_TX_ENABLE;
638 reg &= ~RTL818X_CMD_RX_ENABLE;
639 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
640
641 priv->rf->stop(dev);
642
643 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
644 reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
645 rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
646 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
647
648 free_irq(priv->pdev->irq, dev);
649
650 rtl8180_free_rx_ring(dev);
651 for (i = 0; i < 4; i++)
652 rtl8180_free_tx_ring(dev, i);
653 }
654
655 static int rtl8180_add_interface(struct ieee80211_hw *dev,
656 struct ieee80211_vif *vif)
657 {
658 struct rtl8180_priv *priv = dev->priv;
659
660 /*
661 * We only support one active interface at a time.
662 */
663 if (priv->vif)
664 return -EBUSY;
665
666 switch (vif->type) {
667 case NL80211_IFTYPE_STATION:
668 break;
669 default:
670 return -EOPNOTSUPP;
671 }
672
673 priv->vif = vif;
674
675 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
676 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->MAC[0],
677 le32_to_cpu(*(__le32 *)vif->addr));
678 rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->MAC[4],
679 le16_to_cpu(*(__le16 *)(vif->addr + 4)));
680 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
681
682 return 0;
683 }
684
685 static void rtl8180_remove_interface(struct ieee80211_hw *dev,
686 struct ieee80211_vif *vif)
687 {
688 struct rtl8180_priv *priv = dev->priv;
689 priv->vif = NULL;
690 }
691
692 static int rtl8180_config(struct ieee80211_hw *dev, u32 changed)
693 {
694 struct rtl8180_priv *priv = dev->priv;
695 struct ieee80211_conf *conf = &dev->conf;
696
697 priv->rf->set_chan(dev, conf);
698
699 return 0;
700 }
701
702 static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
703 struct ieee80211_vif *vif,
704 struct ieee80211_bss_conf *info,
705 u32 changed)
706 {
707 struct rtl8180_priv *priv = dev->priv;
708 int i;
709
710 if (changed & BSS_CHANGED_BSSID) {
711 for (i = 0; i < ETH_ALEN; i++)
712 rtl818x_iowrite8(priv, &priv->map->BSSID[i],
713 info->bssid[i]);
714
715 if (is_valid_ether_addr(info->bssid))
716 rtl818x_iowrite8(priv, &priv->map->MSR,
717 RTL818X_MSR_INFRA);
718 else
719 rtl818x_iowrite8(priv, &priv->map->MSR,
720 RTL818X_MSR_NO_LINK);
721 }
722
723 if (changed & BSS_CHANGED_ERP_SLOT && priv->rf->conf_erp)
724 priv->rf->conf_erp(dev, info);
725 }
726
727 static u64 rtl8180_prepare_multicast(struct ieee80211_hw *dev, int mc_count,
728 struct dev_addr_list *mc_list)
729 {
730 return mc_count;
731 }
732
733 static void rtl8180_configure_filter(struct ieee80211_hw *dev,
734 unsigned int changed_flags,
735 unsigned int *total_flags,
736 u64 multicast)
737 {
738 struct rtl8180_priv *priv = dev->priv;
739
740 if (changed_flags & FIF_FCSFAIL)
741 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
742 if (changed_flags & FIF_CONTROL)
743 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
744 if (changed_flags & FIF_OTHER_BSS)
745 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
746 if (*total_flags & FIF_ALLMULTI || multicast > 0)
747 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
748 else
749 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
750
751 *total_flags = 0;
752
753 if (priv->rx_conf & RTL818X_RX_CONF_FCS)
754 *total_flags |= FIF_FCSFAIL;
755 if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
756 *total_flags |= FIF_CONTROL;
757 if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
758 *total_flags |= FIF_OTHER_BSS;
759 if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
760 *total_flags |= FIF_ALLMULTI;
761
762 rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
763 }
764
765 static u64 rtl8180_get_tsf(struct ieee80211_hw *dev)
766 {
767 struct rtl8180_priv *priv = dev->priv;
768
769 return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
770 (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
771 }
772
773 static const struct ieee80211_ops rtl8180_ops = {
774 .tx = rtl8180_tx,
775 .start = rtl8180_start,
776 .stop = rtl8180_stop,
777 .add_interface = rtl8180_add_interface,
778 .remove_interface = rtl8180_remove_interface,
779 .config = rtl8180_config,
780 .bss_info_changed = rtl8180_bss_info_changed,
781 .prepare_multicast = rtl8180_prepare_multicast,
782 .configure_filter = rtl8180_configure_filter,
783 .get_tsf = rtl8180_get_tsf,
784 };
785
786 static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
787 {
788 struct ieee80211_hw *dev = eeprom->data;
789 struct rtl8180_priv *priv = dev->priv;
790 u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
791
792 eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
793 eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
794 eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
795 eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
796 }
797
798 static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom)
799 {
800 struct ieee80211_hw *dev = eeprom->data;
801 struct rtl8180_priv *priv = dev->priv;
802 u8 reg = 2 << 6;
803
804 if (eeprom->reg_data_in)
805 reg |= RTL818X_EEPROM_CMD_WRITE;
806 if (eeprom->reg_data_out)
807 reg |= RTL818X_EEPROM_CMD_READ;
808 if (eeprom->reg_data_clock)
809 reg |= RTL818X_EEPROM_CMD_CK;
810 if (eeprom->reg_chip_select)
811 reg |= RTL818X_EEPROM_CMD_CS;
812
813 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
814 rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
815 udelay(10);
816 }
817
818 static int __devinit rtl8180_probe(struct pci_dev *pdev,
819 const struct pci_device_id *id)
820 {
821 struct ieee80211_hw *dev;
822 struct rtl8180_priv *priv;
823 unsigned long mem_addr, mem_len;
824 unsigned int io_addr, io_len;
825 int err, i;
826 struct eeprom_93cx6 eeprom;
827 const char *chip_name, *rf_name = NULL;
828 u32 reg;
829 u16 eeprom_val;
830
831 err = pci_enable_device(pdev);
832 if (err) {
833 printk(KERN_ERR "%s (rtl8180): Cannot enable new PCI device\n",
834 pci_name(pdev));
835 return err;
836 }
837
838 err = pci_request_regions(pdev, KBUILD_MODNAME);
839 if (err) {
840 printk(KERN_ERR "%s (rtl8180): Cannot obtain PCI resources\n",
841 pci_name(pdev));
842 return err;
843 }
844
845 io_addr = pci_resource_start(pdev, 0);
846 io_len = pci_resource_len(pdev, 0);
847 mem_addr = pci_resource_start(pdev, 1);
848 mem_len = pci_resource_len(pdev, 1);
849
850 if (mem_len < sizeof(struct rtl818x_csr) ||
851 io_len < sizeof(struct rtl818x_csr)) {
852 printk(KERN_ERR "%s (rtl8180): Too short PCI resources\n",
853 pci_name(pdev));
854 err = -ENOMEM;
855 goto err_free_reg;
856 }
857
858 if ((err = pci_set_dma_mask(pdev, 0xFFFFFF00ULL)) ||
859 (err = pci_set_consistent_dma_mask(pdev, 0xFFFFFF00ULL))) {
860 printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n",
861 pci_name(pdev));
862 goto err_free_reg;
863 }
864
865 pci_set_master(pdev);
866
867 dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8180_ops);
868 if (!dev) {
869 printk(KERN_ERR "%s (rtl8180): ieee80211 alloc failed\n",
870 pci_name(pdev));
871 err = -ENOMEM;
872 goto err_free_reg;
873 }
874
875 priv = dev->priv;
876 priv->pdev = pdev;
877
878 dev->max_rates = 2;
879 SET_IEEE80211_DEV(dev, &pdev->dev);
880 pci_set_drvdata(pdev, dev);
881
882 priv->map = pci_iomap(pdev, 1, mem_len);
883 if (!priv->map)
884 priv->map = pci_iomap(pdev, 0, io_len);
885
886 if (!priv->map) {
887 printk(KERN_ERR "%s (rtl8180): Cannot map device memory\n",
888 pci_name(pdev));
889 goto err_free_dev;
890 }
891
892 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
893 BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
894
895 memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
896 memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
897
898 priv->band.band = IEEE80211_BAND_2GHZ;
899 priv->band.channels = priv->channels;
900 priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
901 priv->band.bitrates = priv->rates;
902 priv->band.n_bitrates = 4;
903 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
904
905 dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
906 IEEE80211_HW_RX_INCLUDES_FCS |
907 IEEE80211_HW_SIGNAL_UNSPEC;
908 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
909 dev->queues = 1;
910 dev->max_signal = 65;
911
912 reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
913 reg &= RTL818X_TX_CONF_HWVER_MASK;
914 switch (reg) {
915 case RTL818X_TX_CONF_R8180_ABCD:
916 chip_name = "RTL8180";
917 break;
918 case RTL818X_TX_CONF_R8180_F:
919 chip_name = "RTL8180vF";
920 break;
921 case RTL818X_TX_CONF_R8185_ABC:
922 chip_name = "RTL8185";
923 break;
924 case RTL818X_TX_CONF_R8185_D:
925 chip_name = "RTL8185vD";
926 break;
927 default:
928 printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
929 pci_name(pdev), reg >> 25);
930 goto err_iounmap;
931 }
932
933 priv->r8185 = reg & RTL818X_TX_CONF_R8185_ABC;
934 if (priv->r8185) {
935 priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
936 pci_try_set_mwi(pdev);
937 }
938
939 eeprom.data = dev;
940 eeprom.register_read = rtl8180_eeprom_register_read;
941 eeprom.register_write = rtl8180_eeprom_register_write;
942 if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
943 eeprom.width = PCI_EEPROM_WIDTH_93C66;
944 else
945 eeprom.width = PCI_EEPROM_WIDTH_93C46;
946
947 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_PROGRAM);
948 rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
949 udelay(10);
950
951 eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val);
952 eeprom_val &= 0xFF;
953 switch (eeprom_val) {
954 case 1: rf_name = "Intersil";
955 break;
956 case 2: rf_name = "RFMD";
957 break;
958 case 3: priv->rf = &sa2400_rf_ops;
959 break;
960 case 4: priv->rf = &max2820_rf_ops;
961 break;
962 case 5: priv->rf = &grf5101_rf_ops;
963 break;
964 case 9: priv->rf = rtl8180_detect_rf(dev);
965 break;
966 case 10:
967 rf_name = "RTL8255";
968 break;
969 default:
970 printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
971 pci_name(pdev), eeprom_val);
972 goto err_iounmap;
973 }
974
975 if (!priv->rf) {
976 printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
977 pci_name(pdev), rf_name);
978 goto err_iounmap;
979 }
980
981 eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val);
982 priv->csthreshold = eeprom_val >> 8;
983 if (!priv->r8185) {
984 __le32 anaparam;
985 eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2);
986 priv->anaparam = le32_to_cpu(anaparam);
987 eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam);
988 }
989
990 eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)dev->wiphy->perm_addr, 3);
991 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
992 printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using"
993 " randomly generated MAC addr\n", pci_name(pdev));
994 random_ether_addr(dev->wiphy->perm_addr);
995 }
996
997 /* CCK TX power */
998 for (i = 0; i < 14; i += 2) {
999 u16 txpwr;
1000 eeprom_93cx6_read(&eeprom, 0x10 + (i >> 1), &txpwr);
1001 priv->channels[i].hw_value = txpwr & 0xFF;
1002 priv->channels[i + 1].hw_value = txpwr >> 8;
1003 }
1004
1005 /* OFDM TX power */
1006 if (priv->r8185) {
1007 for (i = 0; i < 14; i += 2) {
1008 u16 txpwr;
1009 eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr);
1010 priv->channels[i].hw_value |= (txpwr & 0xFF) << 8;
1011 priv->channels[i + 1].hw_value |= txpwr & 0xFF00;
1012 }
1013 }
1014
1015 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1016
1017 spin_lock_init(&priv->lock);
1018
1019 err = ieee80211_register_hw(dev);
1020 if (err) {
1021 printk(KERN_ERR "%s (rtl8180): Cannot register device\n",
1022 pci_name(pdev));
1023 goto err_iounmap;
1024 }
1025
1026 printk(KERN_INFO "%s: hwaddr %pM, %s + %s\n",
1027 wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1028 chip_name, priv->rf->name);
1029
1030 return 0;
1031
1032 err_iounmap:
1033 iounmap(priv->map);
1034
1035 err_free_dev:
1036 pci_set_drvdata(pdev, NULL);
1037 ieee80211_free_hw(dev);
1038
1039 err_free_reg:
1040 pci_release_regions(pdev);
1041 pci_disable_device(pdev);
1042 return err;
1043 }
1044
1045 static void __devexit rtl8180_remove(struct pci_dev *pdev)
1046 {
1047 struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1048 struct rtl8180_priv *priv;
1049
1050 if (!dev)
1051 return;
1052
1053 ieee80211_unregister_hw(dev);
1054
1055 priv = dev->priv;
1056
1057 pci_iounmap(pdev, priv->map);
1058 pci_release_regions(pdev);
1059 pci_disable_device(pdev);
1060 ieee80211_free_hw(dev);
1061 }
1062
1063 #ifdef CONFIG_PM
1064 static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state)
1065 {
1066 pci_save_state(pdev);
1067 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1068 return 0;
1069 }
1070
1071 static int rtl8180_resume(struct pci_dev *pdev)
1072 {
1073 pci_set_power_state(pdev, PCI_D0);
1074 pci_restore_state(pdev);
1075 return 0;
1076 }
1077
1078 #endif /* CONFIG_PM */
1079
1080 static struct pci_driver rtl8180_driver = {
1081 .name = KBUILD_MODNAME,
1082 .id_table = rtl8180_table,
1083 .probe = rtl8180_probe,
1084 .remove = __devexit_p(rtl8180_remove),
1085 #ifdef CONFIG_PM
1086 .suspend = rtl8180_suspend,
1087 .resume = rtl8180_resume,
1088 #endif /* CONFIG_PM */
1089 };
1090
1091 static int __init rtl8180_init(void)
1092 {
1093 return pci_register_driver(&rtl8180_driver);
1094 }
1095
1096 static void __exit rtl8180_exit(void)
1097 {
1098 pci_unregister_driver(&rtl8180_driver);
1099 }
1100
1101 module_init(rtl8180_init);
1102 module_exit(rtl8180_exit);
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