iPXE
rtl818x.c
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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  * Modified for iPXE, June 2009, by Joshua Oreman <oremanj@rwcr.net>
9  *
10  * Based on the r8180 driver, which is:
11  * Copyright 2004-2005 Andrea Merello <andreamrl@tiscali.it>, et al.
12  *
13  * Thanks to Realtek for their support!
14  *
15  * This program is free software; you can redistribute it and/or modify
16  * it under the terms of the GNU General Public License version 2 as
17  * published by the Free Software Foundation.
18  */
19 
20 FILE_LICENCE(GPL2_ONLY);
21 
22 #include <stdint.h>
23 #include <errno.h>
24 #include <stdio.h>
25 #include <unistd.h>
26 #include <byteswap.h>
27 #include <ipxe/iobuf.h>
28 #include <ipxe/malloc.h>
29 #include <ipxe/pci.h>
30 #include <ipxe/net80211.h>
31 #include <ipxe/netdevice.h>
32 #include <ipxe/threewire.h>
33 
34 #include "rtl818x.h"
35 
36 /* rtl818x_rates[hw rate number] = rate in 100kbps units */
37 static const u16 rtl818x_rates[] = {
38  10, 20, 55, 110, /* 802.11b */
39  60, 90, 120, 180, 240, 360, 480, 540, /* 802.11g */
40  0, 0, 0, 0, /* index safely using a value masked with 0xF */
41 };
42 #define RTL818X_NR_B_RATES 4
43 #define RTL818X_NR_RATES 12
44 
45 /* used by RF drivers */
47 {
48  struct rtl818x_priv *priv = dev->priv;
49  int i = 10;
50  u32 buf;
51 
52  buf = (data << 8) | addr;
53 
54  rtl818x_iowrite32(priv, (u32 *)&priv->map->PHY[0], buf | 0x80);
55  while (i--) {
56  rtl818x_iowrite32(priv, (u32 *)&priv->map->PHY[0], buf);
57  if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF))
58  return;
59  }
60 }
61 
62 static void rtl818x_handle_rx(struct net80211_device *dev)
63 {
64  struct rtl818x_priv *priv = dev->priv;
65  unsigned int count = RTL818X_RX_RING_SIZE;
66 
67  while (count--) {
68  struct rtl818x_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
69  struct io_buffer *iob = priv->rx_buf[priv->rx_idx];
70  u32 flags = le32_to_cpu(entry->flags);
71 
73  return;
74 
78  /* This is crappy hardware. The Linux driver
79  doesn't even log these. */
80  goto done;
82  /* This is actually a corrupt packet. */
83  DBG2("rtl818x RX:%d CRC fail: flags %08x\n",
84  priv->rx_idx, flags);
85  net80211_rx_err(dev, NULL, EIO);
86  } else {
87  u32 flags2 = le32_to_cpu(entry->flags2);
88  struct io_buffer *new_iob = alloc_iob(MAX_RX_SIZE);
89  if (!new_iob) {
91  goto done;
92  }
93 
94  DBGP("rtl818x RX:%d success: flags %08x %08x\n",
95  priv->rx_idx, flags, flags2);
96 
97  iob_put(iob, flags & 0xFFF);
98 
99  net80211_rx(dev, iob, (flags2 >> 8) & 0x7f,
100  rtl818x_rates[(flags >> 20) & 0xf]);
101 
102  iob = new_iob;
103  priv->rx_buf[priv->rx_idx] = iob;
104  }
105 
106  done:
107  entry->rx_buf = cpu_to_le32(virt_to_bus(iob->data));
109 
110  if (priv->rx_idx == RTL818X_RX_RING_SIZE - 1)
112 
113  priv->rx_idx = (priv->rx_idx + 1) % RTL818X_RX_RING_SIZE;
114  }
115 }
116 
117 static void rtl818x_handle_tx(struct net80211_device *dev)
118 {
119  struct rtl818x_priv *priv = dev->priv;
120  unsigned int count = RTL818X_TX_RING_SIZE;
121 
122  while (count--) {
123  struct rtl818x_tx_desc *entry = &priv->tx_ring[priv->tx_cons];
124  struct io_buffer *iob = priv->tx_buf[priv->tx_cons];
125  u32 flags = le32_to_cpu(entry->flags);
126  int rc;
127 
128  if ((flags & RTL818X_TX_DESC_FLAG_OWN) || !iob)
129  return;
130 
131  rc = 0;
133  /* our packet was not ACKed properly */
134  rc = EIO;
135  }
136 
137  net80211_tx_complete(dev, iob, flags & 0xFF, rc);
138 
139  priv->tx_buf[priv->tx_cons] = NULL;
140  priv->tx_cons = (priv->tx_cons + 1) % RTL818X_TX_RING_SIZE;
141  }
142 }
143 
144 static void rtl818x_poll(struct net80211_device *dev)
145 {
146  struct rtl818x_priv *priv = dev->priv;
147  u16 reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
148 
149  if (reg == 0xFFFF)
150  return;
151 
152  rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
153 
155  rtl818x_handle_tx(dev);
156 
158  rtl818x_handle_rx(dev);
159 }
160 
161 #define DIV_ROUND_UP(n,d) (((n)+(d)-1)/(d))
162 
163 static int rtl818x_tx(struct net80211_device *dev, struct io_buffer *iob)
164 {
165  struct rtl818x_priv *priv = dev->priv;
166  struct rtl818x_tx_desc *entry;
167  u32 tx_flags;
168  u16 plcp_len = 0;
169  int len = iob_len(iob);
170 
172  RTL818X_TX_DESC_FLAG_LS | (priv->hw_rate << 24) | len;
173 
174  if (priv->r8185) {
175  tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
177  } else {
178  unsigned int remainder;
179 
180  plcp_len = DIV_ROUND_UP(16 * (len + 4),
181  (dev->rates[dev->rate] * 2) / 10);
182  remainder = (16 * (len + 4)) %
183  ((dev->rates[dev->rate] * 2) / 10);
184 
185  if (remainder > 0 && remainder <= 6)
186  plcp_len |= 1 << 15;
187  }
188 
189  entry = &priv->tx_ring[priv->tx_prod];
190 
192  tx_flags |= RTL818X_TX_DESC_FLAG_CTS;
193  tx_flags |= priv->hw_rtscts_rate << 19;
194  entry->rts_duration = net80211_cts_duration(dev, len);
195  } else {
196  entry->rts_duration = 0;
197  }
198 
199  if (entry->flags & RTL818X_TX_DESC_FLAG_OWN) {
200  /* card hasn't processed the old packet yet! */
201  return -EBUSY;
202  }
203 
204  priv->tx_buf[priv->tx_prod] = iob;
205  priv->tx_prod = (priv->tx_prod + 1) % RTL818X_TX_RING_SIZE;
206 
207  entry->plcp_len = cpu_to_le16(plcp_len);
208  entry->tx_buf = cpu_to_le32(virt_to_bus(iob->data));
209  entry->frame_len = cpu_to_le32(len);
210  entry->flags2 = /* alternate retry rate in 100kbps << 4 */ 0;
211  entry->retry_limit = RTL818X_MAX_RETRIES;
212  entry->flags = cpu_to_le32(tx_flags);
213 
214  rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << 5));
215 
216  return 0;
217 }
218 
219 void rtl818x_set_anaparam(struct rtl818x_priv *priv, u32 anaparam)
220 {
221  u8 reg;
222 
224  reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
225  rtl818x_iowrite8(priv, &priv->map->CONFIG3,
227  rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
228  rtl818x_iowrite8(priv, &priv->map->CONFIG3,
231 }
232 
233 static int rtl818x_init_hw(struct net80211_device *dev)
234 {
235  struct rtl818x_priv *priv = dev->priv;
236  u16 reg;
237 
238  rtl818x_iowrite8(priv, &priv->map->CMD, 0);
239  rtl818x_ioread8(priv, &priv->map->CMD);
240  mdelay(10);
241 
242  /* reset */
243  rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
244  rtl818x_ioread8(priv, &priv->map->CMD);
245 
246  reg = rtl818x_ioread8(priv, &priv->map->CMD);
247  reg &= (1 << 1);
250  rtl818x_ioread8(priv, &priv->map->CMD);
251  mdelay(200);
252 
253  /* check success of reset */
254  if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
255  DBG("rtl818x %s: reset timeout!\n", dev->netdev->name);
256  return -ETIMEDOUT;
257  }
258 
259  rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
260  rtl818x_ioread8(priv, &priv->map->CMD);
261  mdelay(200);
262 
263  if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
264  /* For cardbus */
265  reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
266  reg |= 1 << 1;
267  rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
268  reg = rtl818x_ioread16(priv, &priv->map->FEMR);
269  reg |= (1 << 15) | (1 << 14) | (1 << 4);
270  rtl818x_iowrite16(priv, &priv->map->FEMR, reg);
271  }
272 
273  rtl818x_iowrite8(priv, &priv->map->MSR, 0);
274 
275  if (!priv->r8185)
276  rtl818x_set_anaparam(priv, priv->anaparam);
277 
278  rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
279  rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring_dma);
280 
281  /* TODO: necessary? specs indicate not */
283  reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
284  rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
285  if (priv->r8185) {
286  reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
287  rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
288  }
290 
291  /* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */
292 
293  /* TODO: turn off hw wep on rtl8180 */
294 
295  rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
296 
297  if (priv->r8185) {
298  rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
299  rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
300  rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
301 
302  rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
303 
304  /* TODO: set ClkRun enable? necessary? */
305  reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
306  rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
308  reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
309  rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
311  } else {
312  rtl818x_iowrite16(priv, &priv->map->BRSR, 0x1);
313  rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
314 
315  rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
316  rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
317  }
318 
319  priv->rf->init(dev);
320  if (priv->r8185)
321  rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
322  return 0;
323 }
324 
325 static int rtl818x_init_rx_ring(struct net80211_device *dev)
326 {
327  struct rtl818x_priv *priv = dev->priv;
328  struct rtl818x_rx_desc *entry;
329  int i;
330 
331  priv->rx_ring = malloc_dma(sizeof(*priv->rx_ring) * RTL818X_RX_RING_SIZE,
333  priv->rx_ring_dma = virt_to_bus(priv->rx_ring);
334  if (!priv->rx_ring) {
335  DBG("rtl818x %s: cannot allocate RX ring\n", dev->netdev->name);
336  return -ENOMEM;
337  }
338 
339  memset(priv->rx_ring, 0, sizeof(*priv->rx_ring) * RTL818X_RX_RING_SIZE);
340  priv->rx_idx = 0;
341 
342  for (i = 0; i < RTL818X_RX_RING_SIZE; i++) {
343  struct io_buffer *iob = alloc_iob(MAX_RX_SIZE);
344  entry = &priv->rx_ring[i];
345  if (!iob)
346  return -ENOMEM;
347 
348  priv->rx_buf[i] = iob;
349  entry->rx_buf = cpu_to_le32(virt_to_bus(iob->data));
351  MAX_RX_SIZE);
352  }
354  return 0;
355 }
356 
357 static void rtl818x_free_rx_ring(struct net80211_device *dev)
358 {
359  struct rtl818x_priv *priv = dev->priv;
360  int i;
361 
362  for (i = 0; i < RTL818X_RX_RING_SIZE; i++) {
363  free_iob(priv->rx_buf[i]);
364  priv->rx_buf[i] = NULL;
365  }
366 
367  free_dma(priv->rx_ring, sizeof(*priv->rx_ring) * RTL818X_RX_RING_SIZE);
368  priv->rx_ring = NULL;
369 }
370 
371 static int rtl818x_init_tx_ring(struct net80211_device *dev)
372 {
373  struct rtl818x_priv *priv = dev->priv;
374  int i;
375 
376  priv->tx_ring = malloc_dma(sizeof(*priv->tx_ring) * RTL818X_TX_RING_SIZE,
378  priv->tx_ring_dma = virt_to_bus(priv->tx_ring);
379  if (!priv->tx_ring) {
380  DBG("rtl818x %s: cannot allocate TX ring\n", dev->netdev->name);
381  return -ENOMEM;
382  }
383 
384  memset(priv->tx_ring, 0, sizeof(*priv->tx_ring) * RTL818X_TX_RING_SIZE);
385  priv->tx_prod = priv->tx_cons = 0;
386 
387  for (i = 0; i < RTL818X_TX_RING_SIZE; i++)
388  priv->tx_ring[i].next_tx_desc = cpu_to_le32(priv->tx_ring_dma +
389  ((i + 1) % RTL818X_TX_RING_SIZE) * sizeof(*priv->tx_ring));
390 
391  return 0;
392 }
393 
394 static void rtl818x_free_tx_ring(struct net80211_device *dev)
395 {
396  struct rtl818x_priv *priv = dev->priv;
397  int i;
398 
399  for (i = 0; i < RTL818X_TX_RING_SIZE; i++) {
400  if (priv->tx_buf[i])
401  net80211_tx_complete(dev, priv->tx_buf[i], 0, ECANCELED);
402  priv->tx_buf[i] = NULL;
403  }
404 
405  free_dma(priv->tx_ring, sizeof(*priv->tx_ring) * RTL818X_TX_RING_SIZE);
406  priv->tx_ring = NULL;
407 }
408 
409 static void rtl818x_irq(struct net80211_device *dev, int enable)
410 {
411  struct rtl818x_priv *priv = dev->priv;
412  rtl818x_iowrite16(priv, &priv->map->INT_MASK, enable? 0xFFFF : 0);
413 }
414 
415 /* Sets the MAC address of the card. */
416 static void rtl818x_set_hwaddr(struct net80211_device *dev, u8 *hwaddr)
417 {
418  struct rtl818x_priv *priv = dev->priv;
420  rtl818x_iowrite32(priv, (u32 *)&priv->map->MAC[0],
421  le32_to_cpu(*(u32 *)hwaddr));
422  rtl818x_iowrite16(priv, (u16 *)&priv->map->MAC[4],
423  le16_to_cpu(*(u16 *)(hwaddr + 4)));
425 }
426 
427 static int rtl818x_start(struct net80211_device *dev)
428 {
429  struct rtl818x_priv *priv = dev->priv;
430  int ret;
431  u32 reg;
432 
433  ret = rtl818x_init_rx_ring(dev);
434  if (ret)
435  return ret;
436 
437  ret = rtl818x_init_tx_ring(dev);
438  if (ret)
439  goto err_free_rings;
440 
441  ret = rtl818x_init_hw(dev);
442  if (ret)
443  goto err_free_rings;
444 
445  rtl818x_set_hwaddr(dev, dev->netdev->ll_addr);
446 
447  rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
448  rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring_dma);
449 
450  rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
451 
452  rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
453  rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
454 
459  (7 << 8 /* MAX RX DMA */) |
462 
463  if (priv->r8185)
465  else {
466  reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
467  ? RTL818X_RX_CONF_CSDM1 : 0;
468  reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
469  ? RTL818X_RX_CONF_CSDM2 : 0;
470  }
471 
472  priv->rx_conf = reg;
473  rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
474 
475  if (priv->r8185) {
476  reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
479  rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
480 
481  reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
485  rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
486 
487  /* disable early TX */
488  rtl818x_iowrite8(priv, (u8 *)priv->map + 0xec, 0x3f);
489  }
490 
491  reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
492  reg |= (6 << 21 /* MAX TX DMA */) |
494 
495  if (priv->r8185)
497  else
499 
500  /* different meaning, same value on both rtl8185 and rtl8180 */
502 
503  rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
504 
505  reg = rtl818x_ioread8(priv, &priv->map->CMD);
508  rtl818x_iowrite8(priv, &priv->map->CMD, reg);
509 
510  DBG("%s rtl818x: started\n", dev->netdev->name);
511 
512  return 0;
513 
514  err_free_rings:
516  if (priv->tx_ring)
518 
519  DBG("%s rtl818x: failed to start\n", dev->netdev->name);
520 
521  return ret;
522 }
523 
524 static void rtl818x_stop(struct net80211_device *dev)
525 {
526  struct rtl818x_priv *priv = dev->priv;
527  u8 reg;
528 
529  rtl818x_irq(dev, 0);
530 
531  reg = rtl818x_ioread8(priv, &priv->map->CMD);
534  rtl818x_iowrite8(priv, &priv->map->CMD, reg);
535 
536  priv->rf->stop(dev);
537 
539  reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
542 
545 }
546 
547 static int rtl818x_config(struct net80211_device *dev, int changed)
548 {
549  struct rtl818x_priv *priv = dev->priv;
550  int i;
551 
552  if (changed & NET80211_CFG_CHANNEL)
553  priv->rf->set_chan(dev, &dev->channels[dev->channel]);
554 
555  if (changed & NET80211_CFG_ASSOC) {
556  for (i = 0; i < ETH_ALEN; i++)
557  rtl818x_iowrite8(priv, &priv->map->BSSID[i], dev->bssid[i]);
558  rtl818x_iowrite8(priv, &priv->map->MSR,
559  dev->state & NET80211_ASSOCIATED?
561  }
562 
563  if (changed & NET80211_CFG_PHY_PARAMS)
564  priv->rf->conf_erp(dev);
565 
566  if (changed & NET80211_CFG_RATE) {
567  /* figure out the hardware rate number for the new
568  logical rate */
569  int hw_rate;
570  for (hw_rate = 0; hw_rate < RTL818X_NR_RATES &&
571  rtl818x_rates[hw_rate] != dev->rates[dev->rate];
572  hw_rate++)
573  ;
574  if (hw_rate >= RTL818X_NR_RATES)
575  return -EINVAL;
576 
577  priv->hw_rate = hw_rate;
578 
579  /* and the RTS/CTS rate */
580  for (hw_rate = 0; hw_rate < RTL818X_NR_RATES &&
582  dev->rates[dev->rtscts_rate];
583  hw_rate++)
584  ;
585  if (hw_rate >= RTL818X_NR_RATES)
586  hw_rate = priv->hw_rate;
587 
588  priv->hw_rtscts_rate = hw_rate;
589  }
590 
591  return 0;
592 }
593 
594 static const u8 rtl818x_eeprom_bits[] = {
599 };
600 
601 static int rtl818x_spi_read_bit(struct bit_basher *basher, unsigned int bit_id)
602 {
603  struct rtl818x_priv *priv = container_of(basher, struct rtl818x_priv,
604  spibit.basher);
605 
606  u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
607  return reg & rtl818x_eeprom_bits[bit_id];
608 }
609 
610 static void rtl818x_spi_write_bit(struct bit_basher *basher,
611  unsigned int bit_id, unsigned long data)
612 {
613  struct rtl818x_priv *priv = container_of(basher, struct rtl818x_priv,
614  spibit.basher);
615 
616  u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
617  u8 mask = rtl818x_eeprom_bits[bit_id];
618  reg = (reg & ~mask) | (data & mask);
619 
620  rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
621 
622  rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
623  udelay(10);
624 }
625 
628  .write = rtl818x_spi_write_bit,
629 };
630 
631 #if DBGLVL_MAX
632 static const char *rtl818x_rf_names[] = {
633  NULL, /* no 0 */
634  "Intersil", "RFMD", /* unsupported 1-2 */
635  "SA2400", "max2820", "GRF5101", /* supported 3-5 */
636  NULL, NULL, NULL, /* no 6-8 */
637  "RTL8225", /* supported 9 */
638  "RTL8255", /* unsupported 10 */
639 };
640 #define RTL818X_NR_RF_NAMES 11
641 #endif
642 
644  .open = rtl818x_start,
645  .close = rtl818x_stop,
646  .transmit = rtl818x_tx,
647  .poll = rtl818x_poll,
648  .irq = rtl818x_irq,
649  .config = rtl818x_config,
650 };
651 
652 int rtl818x_probe(struct pci_device *pdev )
653 {
654  struct net80211_device *dev;
655  struct rtl818x_priv *priv;
656  struct rtl818x_rf_ops *rf;
657  int err, i;
658  const char *chip_name;
659  u32 reg;
660  u16 eeprom_val;
661  struct net80211_hw_info *hwinfo;
662 
663  hwinfo = zalloc(sizeof(*hwinfo));
664  if (!hwinfo) {
665  DBG("rtl818x: hwinfo alloc failed\n");
666  err = -ENOMEM;
667  goto err_alloc_hwinfo;
668  }
669 
670  adjust_pci_device(pdev);
671 
672  dev = net80211_alloc(sizeof(*priv));
673  if (!dev) {
674  DBG("rtl818x: net80211 alloc failed\n");
675  err = -ENOMEM;
676  goto err_alloc_dev;
677  }
678 
679  priv = dev->priv;
680  priv->pdev = pdev;
681  dev->netdev->dev = &pdev->dev;
682 
683  priv->map = (struct rtl818x_csr *)pdev->ioaddr;
684  if (!priv->map) {
685  DBG("rtl818x: cannot find device memory\n");
686  err = -ENXIO;
687  goto err_free_dev;
688  }
689 
690  reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
692  switch (reg) {
694  chip_name = "0";
695  break;
697  chip_name = "0vF";
698  break;
700  chip_name = "5";
701  break;
703  chip_name = "5vD";
704  break;
705  default:
706  DBG("rtl818x: Unknown chip! (0x%x)\n", reg >> 25);
707  err = -ENOSYS;
708  goto err_free_dev;
709  }
710 
712 
713  hwinfo->bands = NET80211_BAND_BIT_2GHZ;
714  hwinfo->flags = NET80211_HW_RX_HAS_FCS;
715  hwinfo->signal_type = NET80211_SIGNAL_ARBITRARY;
716  hwinfo->signal_max = 65;
717  hwinfo->channel_change_time = 1000;
718 
720  sizeof(*rtl818x_rates) * RTL818X_NR_RATES);
721 
722  if (priv->r8185) {
725  } else {
726  hwinfo->modes = NET80211_MODE_B;
728  }
729 
730  priv->spibit.basher.op = &rtl818x_basher_ops;
731  priv->spibit.bus.mode = SPI_MODE_THREEWIRE;
732  init_spi_bit_basher(&priv->spibit);
733 
734  DBG2("rtl818x RX_CONF: %08x\n", rtl818x_ioread32(priv, &priv->map->RX_CONF));
735 
736  if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
737  init_at93c66(&priv->eeprom, 16);
738  else
739  init_at93c46(&priv->eeprom, 16);
740  priv->eeprom.bus = &priv->spibit.bus;
741 
743  rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
744  udelay(10);
745 
746  nvs_read(&priv->eeprom.nvs, 0x06, &eeprom_val, 2);
747  DBG2("rtl818x eeprom val = %04x\n", eeprom_val);
748  eeprom_val &= 0xFF;
749 
750  priv->rf = NULL;
752  if (rf->id == eeprom_val) {
753  priv->rf = rf;
754  break;
755  }
756  }
757 
758  if (!priv->rf) {
759 #if DBGLVL_MAX
760  if (eeprom_val < RTL818X_NR_RF_NAMES &&
761  rtl818x_rf_names[eeprom_val] != NULL)
762  DBG("rtl818x: %s RF frontend not supported!\n",
763  rtl818x_rf_names[eeprom_val]);
764  else
765  DBG("rtl818x: RF frontend #%d not recognized!\n",
766  eeprom_val);
767 #endif
768 
769  err = -ENOSYS;
770  goto err_free_dev;
771  }
772 
773  nvs_read(&priv->eeprom.nvs, 0x17, &eeprom_val, 2);
774  priv->csthreshold = eeprom_val >> 8;
775  if (!priv->r8185) {
776  nvs_read(&priv->eeprom.nvs, 0xD, &priv->anaparam, 4);
777  nvs_read(&priv->eeprom.nvs, 0x19, &priv->rfparam, 2);
778  priv->anaparam = le32_to_cpu(priv->anaparam);
779  priv->rfparam = le16_to_cpu(priv->rfparam);
780  }
781 
782  /* read the MAC address */
783  nvs_read(&priv->eeprom.nvs, 0x7, hwinfo->hwaddr, 6);
784 
785  /* CCK TX power */
786  for (i = 0; i < 14; i += 2) {
787  u16 txpwr;
788  nvs_read(&priv->eeprom.nvs, 0x10 + (i >> 1), &txpwr, 2);
789  priv->txpower[i] = txpwr & 0xFF;
790  priv->txpower[i + 1] = txpwr >> 8;
791  }
792 
793  /* OFDM TX power */
794  if (priv->r8185) {
795  for (i = 0; i < 14; i += 2) {
796  u16 txpwr;
797  nvs_read(&priv->eeprom.nvs, 0x20 + (i >> 1), &txpwr, 2);
798  priv->txpower[i] |= (txpwr & 0xFF) << 8;
799  priv->txpower[i + 1] |= txpwr & 0xFF00;
800  }
801  }
802 
804 
805  err = net80211_register(dev, &rtl818x_operations, hwinfo);
806  if (err) {
807  DBG("rtl818x: cannot register device\n");
808  goto err_free_dev;
809  }
810 
811  free(hwinfo);
812 
813  DBG("rtl818x: Realtek RTL818%s (RF chip %s) with address %s\n",
814  chip_name, priv->rf->name, netdev_addr(dev->netdev));
815 
816  return 0;
817 
818  err_free_dev:
819  pci_set_drvdata(pdev, NULL);
820  net80211_free(dev);
821  err_alloc_dev:
822  free(hwinfo);
823  err_alloc_hwinfo:
824  return err;
825 }
826 
827 void rtl818x_remove(struct pci_device *pdev)
828 {
829  struct net80211_device *dev = pci_get_drvdata(pdev);
830 
831  if (!dev)
832  return;
833 
834  net80211_unregister(dev);
835  net80211_free(dev);
836 }
uint16_t u16
Definition: stdint.h:21
static int rtl818x_init_tx_ring(struct net80211_device *dev)
Definition: rtl818x.c:371
int hw_rate
Definition: rtl818x.h:284
#define RTL818X_RX_CONF_CSDM1
Definition: rtl818x.h:97
#define EINVAL
Invalid argument.
Definition: errno.h:428
struct bit_basher basher
Bit-bashing interface.
Definition: spi_bit.h:20
#define RTL818X_CONFIG3_ANAPARAM_WRITE
Definition: rtl818x.h:123
struct arbelprm_rc_send_wqe rc
Definition: arbel.h:14
int modes
A bitwise OR of the 802.11x modes supported by this device.
Definition: net80211.h:450
void net80211_free(struct net80211_device *dev)
Free 802.11 device.
Definition: net80211.c:838
#define RTL818X_RX_CONF_RX_AUTORESETPHY
Definition: rtl818x.h:96
static int rtl818x_spi_read_bit(struct bit_basher *basher, unsigned int bit_id)
Definition: rtl818x.c:601
#define iob_put(iobuf, len)
Definition: iobuf.h:116
static const u8 rtl818x_eeprom_bits[]
Definition: rtl818x.c:594
#define RTL818X_INT_RX_OK
Definition: rtl818x.h:51
#define RTL818X_MSR_INFRA
Definition: rtl818x.h:119
#define EBUSY
Device or resource busy.
Definition: errno.h:338
static void rtl818x_handle_tx(struct net80211_device *dev)
Definition: rtl818x.c:117
void rtl818x_write_phy(struct net80211_device *dev, u8 addr, u32 data)
Definition: rtl818x.c:46
static u8 rtl818x_ioread8(struct rtl818x_priv *priv __unused, u8 *addr)
Definition: rtl818x.h:315
u8 channel
The channel currently in use, as an index into the channels array.
Definition: net80211.h:812
#define le32_to_cpu(value)
Definition: byteswap.h:113
#define RTL818X_TX_CONF_R8185_D
Definition: rtl818x.h:76
#define RTL818X_TX_AGC_CTL_FEEDBACK_ANT
Definition: rtl818x.h:156
unsigned long ioaddr
I/O address.
Definition: pci.h:200
Error codes.
Bit-bashing operations.
Definition: bitbash.h:15
#define RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT
Definition: rtl818x.h:155
static void rtl818x_iowrite8(struct rtl818x_priv *priv __unused, u8 *addr, u8 val)
Definition: rtl818x.h:330
#define RTL818X_EEPROM_CMD_CONFIG
Definition: rtl818x.h:110
void net80211_rx_err(struct net80211_device *dev, struct io_buffer *iob, int rc)
Indicate an error in receiving a packet.
Definition: net80211.c:2788
I/O buffers.
void free_iob(struct io_buffer *iobuf)
Free I/O buffer.
Definition: iobuf.c:145
void net80211_rx(struct net80211_device *dev, struct io_buffer *iob, int signal, u16 rate)
Handle receipt of 802.11 frame.
Definition: net80211.c:2689
u8 rtscts_rate
The rate to use for RTS/CTS transmissions.
Definition: net80211.h:831
#define RTL818X_RX_CONF_CSDM2
Definition: rtl818x.h:98
static void rtl818x_handle_rx(struct net80211_device *dev)
Definition: rtl818x.c:62
void net80211_unregister(struct net80211_device *dev)
Unregister 802.11 device from network stack.
Definition: net80211.c:824
#define RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT
Definition: rtl818x.h:169
static const u16 rtl818x_rates[]
Definition: rtl818x.c:37
#define RTL818X_TX_CONF_R8185_ABC
Definition: rtl818x.h:75
static struct bit_basher_operations rtl818x_basher_ops
Definition: rtl818x.c:626
unsigned signal_max
Maximum signal in arbitrary cases.
Definition: net80211.h:495
enum net80211_hw_info::@547 flags
A set of flags indicating peculiarities of this device.
#define RTL818X_TX_CONF_R8180_ABCD
Definition: rtl818x.h:73
#define RTL818X_RF_DRIVERS
Definition: rtl818x.h:348
#define RTL818X_CMD_RESET
Definition: rtl818x.h:47
Master In Slave Out.
Definition: spi_bit.h:39
void adjust_pci_device(struct pci_device *pci)
Enable PCI device.
Definition: pci.c:149
struct io_buffer * alloc_iob(size_t len)
Allocate I/O buffer.
Definition: iobuf.c:128
static const char * netdev_addr(struct net_device *netdev)
Get printable network device link-layer address.
Definition: netdevice.h:521
struct device dev
Generic device.
Definition: pci.h:189
#define RTL818X_CMD_TX_ENABLE
Definition: rtl818x.h:45
#define RTL818X_RX_CONF_BROADCAST
Definition: rtl818x.h:88
#define ECANCELED
Operation canceled.
Definition: errno.h:343
int(* open)(struct net80211_device *dev)
Open 802.11 device.
Definition: net80211.h:305
struct net80211_device_operations rtl818x_operations
Definition: rtl818x.c:643
Dynamic memory allocation.
static void rtl818x_iowrite32(struct rtl818x_priv *priv __unused, u32 *addr, u32 val)
Definition: rtl818x.h:342
#define RTL818X_EEPROM_CMD_WRITE
Definition: rtl818x.h:104
#define NET80211_BAND_2GHZ
The 2.4 GHz ISM band, unlicensed in most countries.
Definition: net80211.h:45
u16 rates[NET80211_NR_BANDS][NET80211_MAX_RATES]
List of transmission rates supported by the card, indexed by band.
Definition: net80211.h:508
static void rtl818x_poll(struct net80211_device *dev)
Definition: rtl818x.c:144
static void pci_set_drvdata(struct pci_device *pci, void *priv)
Set PCI driver-private data.
Definition: pci.h:338
Operations that must be implemented by an 802.11 driver.
Definition: net80211.h:293
#define ENOMEM
Not enough space.
Definition: errno.h:534
#define RTL818X_CW_CONF_PERPACKET_CW_SHIFT
Definition: rtl818x.h:168
#define RTL818X_NR_B_RATES
Definition: rtl818x.c:42
void * memcpy(void *dest, const void *src, size_t len) __nonnull
Three-wire serial interface.
static __always_inline unsigned long virt_to_bus(volatile const void *addr)
Convert virtual address to a bus address.
Definition: io.h:183
static int rtl818x_tx(struct net80211_device *dev, struct io_buffer *iob)
Definition: rtl818x.c:163
#define DBGP(...)
Definition: compiler.h:532
Information on the capabilities of an 802.11 hardware device.
Definition: net80211.h:436
u8 hwaddr[ETH_ALEN]
Default hardware MAC address.
Definition: net80211.h:447
#define container_of(ptr, type, field)
Get containing structure.
Definition: stddef.h:35
FILE_LICENCE(GPL2_ONLY)
#define RTL818X_TX_CONF_HW_SEQNUM
Definition: rtl818x.h:82
#define RTL818X_TX_CONF_SAT_HWPLCP
Definition: rtl818x.h:72
void init_spi_bit_basher(struct spi_bit_basher *spibit)
Initialise SPI bit-bashing interface.
Definition: spi_bit.c:235
int nr_rates[NET80211_NR_BANDS]
Number of supported rates, indexed by band.
Definition: net80211.h:511
void udelay(unsigned long usecs)
Delay for a fixed number of microseconds.
Definition: timer.c:60
Master Out Slave In.
Definition: spi_bit.h:37
#define RTL818X_TX_CONF_R8180_F
Definition: rtl818x.h:74
static void rtl818x_spi_write_bit(struct bit_basher *basher, unsigned int bit_id, unsigned long data)
Definition: rtl818x.c:610
#define RTL818X_EEPROM_CMD_PROGRAM
Definition: rtl818x.h:109
static void rtl818x_free_rx_ring(struct net80211_device *dev)
Definition: rtl818x.c:357
#define RTL818X_RX_CONF_NICMAC
Definition: rtl818x.h:86
#define cpu_to_le32(value)
Definition: byteswap.h:107
void * priv
Driver private data.
Definition: net80211.h:798
static int rtl818x_init_rx_ring(struct net80211_device *dev)
Definition: rtl818x.c:325
#define RTL818X_INT_TXN_OK
Definition: rtl818x.h:57
int(* read)(struct bit_basher *basher, unsigned int bit_id)
Read input bit.
Definition: bitbash.h:51
#define DIV_ROUND_UP(n, d)
Definition: rtl818x.c:161
A bit-bashing interface.
Definition: bitbash.h:55
#define NET80211_PHY_USE_PROTECTION
Whether to use RTS/CTS or CTS-to-self protection for transmissions.
Definition: net80211.h:251
struct net80211_device * net80211_alloc(size_t priv_size)
Allocate 802.11 device.
Definition: net80211.c:754
static void(* free)(struct refcnt *refcnt))
Definition: refcnt.h:54
union aes_table_entry entry[256]
Table entries, indexed by S(N)
Definition: aes.c:26
void * zalloc(size_t size)
Allocate cleared memory.
Definition: malloc.c:624
The iPXE 802.11 MAC layer.
static void rtl818x_stop(struct net80211_device *dev)
Definition: rtl818x.c:524
static unsigned int unsigned int reg
Definition: intel.h:245
#define RTL818X_TX_CONF_HWVER_MASK
Definition: rtl818x.h:79
PCI bus.
#define NET80211_CFG_PHY_PARAMS
Low-level link parameters (short preamble, protection, etc) have changed.
Definition: net80211.h:90
A PCI device.
Definition: pci.h:187
static size_t iob_len(struct io_buffer *iobuf)
Calculate length of data in an I/O buffer.
Definition: iobuf.h:151
#define NET80211_ASSOCIATED
Whether we have successfully associated with the network.
Definition: net80211.h:201
Structure encapsulating the complete state of an 802.11 device.
Definition: net80211.h:786
Serial clock.
Definition: spi_bit.h:35
#define RTL818X_EEPROM_CMD_CK
Definition: rtl818x.h:105
#define for_each_table_entry(pointer, table)
Iterate through all entries within a linker table.
Definition: tables.h:358
#define RTL818X_EEPROM_CMD_CS
Definition: rtl818x.h:106
#define SPI_BIT_SS(slave)
Determine bit index for a particular slave.
Definition: spi_bit.h:50
#define RTL818X_TX_CONF_PROBE_DTS
Definition: rtl818x.h:81
static int rtl818x_start(struct net80211_device *dev)
Definition: rtl818x.c:427
u32 addr
Definition: sky2.h:8
struct spi_bit_basher spibit
Definition: rtl818x.h:287
#define NET80211_MODE_B
802.11b: 1-11 Mbps operation using DSSS/CCK signaling on the 2.4GHz band
Definition: net80211.h:66
#define ETH_ALEN
Definition: if_ether.h:8
void net80211_tx_complete(struct net80211_device *dev, struct io_buffer *iob, int retries, int rc)
Indicate the completed transmission of a packet.
Definition: net80211.c:2808
#define le16_to_cpu(value)
Definition: byteswap.h:112
u16 rates[NET80211_MAX_RATES]
A list of all possible TX rates we might use.
Definition: net80211.h:818
#define RTL818X_MAX_RETRIES
Definition: rtl818x.h:222
#define RTL818X_INT_RX_ERR
Definition: rtl818x.h:52
static int rtl818x_init_hw(struct net80211_device *dev)
Definition: rtl818x.c:233
int phy_flags
Physical layer options.
Definition: net80211.h:983
struct device * dev
Underlying hardware device.
Definition: netdevice.h:360
#define RTL818X_RX_CONF_DATA
Definition: rtl818x.h:90
Network device management.
enum net80211_hw_info::@548 signal_type
Signal strength information that can be provided by the device.
#define RTL818X_RX_CONF_ONLYERLPKT
Definition: rtl818x.h:99
static void * pci_get_drvdata(struct pci_device *pci)
Get PCI driver-private data.
Definition: pci.h:348
struct net_device * netdev
The net_device that wraps us.
Definition: net80211.h:789
#define RTL818X_RX_RING_SIZE
Definition: rtl818x.h:218
static void rtl818x_irq(struct net80211_device *dev, int enable)
Definition: rtl818x.c:409
void mdelay(unsigned long msecs)
Delay for a fixed number of milliseconds.
Definition: timer.c:78
#define RF_PARAM_CARRIERSENSE1
Definition: rtl818x.h:201
#define RTL818X_INT_TXN_ERR
Definition: rtl818x.h:58
#define ENXIO
No such device or address.
Definition: errno.h:599
char name[NETDEV_NAME_LEN]
Name of this network device.
Definition: netdevice.h:358
uint32_t len
Length.
Definition: ena.h:14
static struct tlan_private * priv
Definition: tlan.c:224
#define MAX_RX_SIZE
Definition: rtl818x.h:197
#define RTL818X_EEPROM_CMD_NORMAL
Definition: rtl818x.h:107
#define NET80211_BAND_BIT_2GHZ
Bitmask for the 2GHz band.
Definition: net80211.h:52
#define RTL818X_TX_CONF_NO_ICV
Definition: rtl818x.h:70
static void rtl818x_free_tx_ring(struct net80211_device *dev)
Definition: rtl818x.c:394
void * data
Start of data.
Definition: iobuf.h:44
#define EIO
Input/output error.
Definition: errno.h:433
#define RTL818X_EEPROM_CMD_READ
Definition: rtl818x.h:103
#define RTL818X_CONFIG4_VCOOFF
Definition: rtl818x.h:127
struct net80211_channel channels[NET80211_MAX_CHANNELS]
A list of all possible channels we might use.
Definition: net80211.h:806
uint16_t count
Number of entries.
Definition: ena.h:22
static void *__malloc malloc_dma(size_t size, size_t phys_align)
Allocate memory for DMA.
Definition: malloc.h:66
void rtl818x_remove(struct pci_device *pdev)
Definition: rtl818x.c:827
static void rtl818x_set_hwaddr(struct net80211_device *dev, u8 *hwaddr)
Definition: rtl818x.c:416
#define cpu_to_le16(value)
Definition: byteswap.h:106
#define RF_PARAM_CARRIERSENSE2
Definition: rtl818x.h:202
#define RTL818X_RX_CONF_MGMT
Definition: rtl818x.h:92
#define ENOSYS
Function not implemented.
Definition: errno.h:564
#define NET80211_CFG_RATE
Requested transmission rate (dev->rate) has changed.
Definition: net80211.h:84
static void rtl818x_iowrite16(struct rtl818x_priv *priv __unused, u16 *addr, u16 val)
Definition: rtl818x.h:336
int nvs_read(struct nvs_device *nvs, unsigned int address, void *data, size_t len)
Read from non-volatile storage device.
Definition: nvs.c:75
static u16 net80211_cts_duration(struct net80211_device *dev, int size)
Calculate duration field for a CTS control frame.
Definition: net80211.h:1179
#define RTL818X_TX_RING_SIZE
Definition: rtl818x.h:219
#define NET80211_CFG_CHANNEL
Channel choice (dev->channel) or regulatory parameters have changed.
Definition: net80211.h:81
int bands
A bitwise OR of the bands on which this device can communicate.
Definition: net80211.h:453
u8 bssid[ETH_ALEN]
MAC address of the access point most recently associated.
Definition: net80211.h:954
#define SPI_MODE_THREEWIRE
Threewire-compatible mode.
Definition: spi.h:199
#define RTL818X_CMD_RX_ENABLE
Definition: rtl818x.h:46
struct arbelprm_port_state_change_st data
Message.
Definition: arbel.h:12
u16 state
State of our association to the network.
Definition: net80211.h:921
uint8_t ll_addr[MAX_LL_ADDR_LEN]
Link-layer address.
Definition: netdevice.h:381
static int rtl818x_config(struct net80211_device *dev, int changed)
Definition: rtl818x.c:547
#define RTL818X_EEPROM_CMD_LOAD
Definition: rtl818x.h:108
static u16 rtl818x_ioread16(struct rtl818x_priv *priv __unused, u16 *addr)
Definition: rtl818x.h:320
#define DBG(...)
Print a debugging message.
Definition: compiler.h:498
void rtl818x_set_anaparam(struct rtl818x_priv *priv, u32 anaparam)
Definition: rtl818x.c:219
#define RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT
Definition: rtl818x.h:154
static void free_dma(void *ptr, size_t size)
Free memory allocated with malloc_dma()
Definition: malloc.h:81
#define RTL818X_MSR_NO_LINK
Definition: rtl818x.h:117
#define NULL
NULL pointer (VOID *)
Definition: Base.h:362
unsigned channel_change_time
Estimate of the time required to change channels, in microseconds.
Definition: net80211.h:518
#define ETIMEDOUT
Connection timed out.
Definition: errno.h:669
#define NET80211_CFG_ASSOC
Association has been established with a new BSS (dev->bssid)
Definition: net80211.h:87
u8 rate
The rate currently in use, as an index into the rates array.
Definition: net80211.h:824
struct bofm_section_header done
Definition: bofm_test.c:46
#define NET80211_MODE_G
802.11g: 54 Mbps operation using ERP/OFDM signaling on the 2.4GHz band
Definition: net80211.h:69
uint8_t u8
Definition: stdint.h:19
#define RTL818X_NR_RATES
Definition: rtl818x.c:43
uint32_t u32
Definition: stdint.h:23
int rtl818x_probe(struct pci_device *pdev)
Definition: rtl818x.c:652
static u32 rtl818x_ioread32(struct rtl818x_priv *priv __unused, u32 *addr)
Definition: rtl818x.h:325
int net80211_register(struct net80211_device *dev, struct net80211_device_operations *ops, struct net80211_hw_info *hw)
Register 802.11 device with network stack.
Definition: net80211.c:791
#define DBG2(...)
Definition: compiler.h:515
if(natsemi->flags &NATSEMI_64BIT) return 1
#define RTL818X_RING_ALIGN
Definition: rtl818x.h:220
void * memset(void *dest, int character, size_t len) __nonnull
A persistent I/O buffer.
Definition: iobuf.h:32
uint8_t flags
Flags.
Definition: ena.h:18