root/drivers/net/wireless/realtek/rtl818x/rtl8180/dev.c

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DEFINITIONS

This source file includes following definitions.
  1. rtl8180_write_phy
  2. rtl8180_handle_rx
  3. rtl8180_handle_tx
  4. rtl8187se_interrupt
  5. rtl8180_interrupt
  6. rtl8180_tx
  7. rtl8180_set_anaparam3
  8. rtl8180_set_anaparam2
  9. rtl8180_set_anaparam
  10. rtl8187se_mac_config
  11. rtl8187se_set_antenna_config
  12. rtl8180_int_enable
  13. rtl8180_int_disable
  14. rtl8180_conf_basic_rates
  15. rtl8180_config_cardbus
  16. rtl8180_init_hw
  17. rtl8180_init_rx_ring
  18. rtl8180_free_rx_ring
  19. rtl8180_init_tx_ring
  20. rtl8180_free_tx_ring
  21. rtl8180_start
  22. rtl8180_stop
  23. rtl8180_get_tsf
  24. rtl8180_beacon_work
  25. rtl8180_add_interface
  26. rtl8180_remove_interface
  27. rtl8180_config
  28. rtl8187se_conf_ac_parm
  29. rtl8180_conf_tx
  30. rtl8180_conf_erp
  31. rtl8180_bss_info_changed
  32. rtl8180_prepare_multicast
  33. rtl8180_configure_filter
  34. rtl8180_eeprom_register_read
  35. rtl8180_eeprom_register_write
  36. rtl8180_eeprom_read
  37. rtl8180_probe
  38. rtl8180_remove
  39. rtl8180_suspend
  40. rtl8180_resume

   1 
   2 /* Linux device driver for RTL8180 / RTL8185 / RTL8187SE
   3  *
   4  * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
   5  * Copyright 2007,2014 Andrea Merello <andrea.merello@gmail.com>
   6  *
   7  * Based on the r8180 driver, which is:
   8  * Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
   9  *
  10  * Thanks to Realtek for their support!
  11  *
  12  ************************************************************************
  13  *
  14  * The driver was extended to the RTL8187SE in 2014 by
  15  * Andrea Merello <andrea.merello@gmail.com>
  16  *
  17  * based also on:
  18  *  - portions of rtl8187se Linux staging driver, Copyright Realtek corp.
  19  *    (available in drivers/staging/rtl8187se directory of Linux 3.14)
  20  *  - other GPL, unpublished (until now), Linux driver code,
  21  *    Copyright Larry Finger <Larry.Finger@lwfinger.net>
  22  *
  23  * A huge thanks goes to Sara V. Nari who forgives me when I'm
  24  * sitting in front of my laptop at evening, week-end, night...
  25  *
  26  * A special thanks goes to Antonio Cuni, who helped me with
  27  * some python userspace stuff I used to debug RTL8187SE code, and who
  28  * bought a laptop with an unsupported Wi-Fi card some years ago...
  29  *
  30  * Thanks to Larry Finger for writing some code for rtl8187se and for
  31  * his suggestions.
  32  *
  33  * Thanks to Dan Carpenter for reviewing my initial patch and for his
  34  * suggestions.
  35  *
  36  * Thanks to Bernhard Schiffner for his help in testing and for his
  37  * suggestions.
  38  *
  39  ************************************************************************
  40  *
  41  * This program is free software; you can redistribute it and/or modify
  42  * it under the terms of the GNU General Public License version 2 as
  43  * published by the Free Software Foundation.
  44  */
  45 
  46 #include <linux/interrupt.h>
  47 #include <linux/pci.h>
  48 #include <linux/slab.h>
  49 #include <linux/delay.h>
  50 #include <linux/etherdevice.h>
  51 #include <linux/eeprom_93cx6.h>
  52 #include <linux/module.h>
  53 #include <net/mac80211.h>
  54 
  55 #include "rtl8180.h"
  56 #include "rtl8225.h"
  57 #include "sa2400.h"
  58 #include "max2820.h"
  59 #include "grf5101.h"
  60 #include "rtl8225se.h"
  61 
  62 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  63 MODULE_AUTHOR("Andrea Merello <andrea.merello@gmail.com>");
  64 MODULE_DESCRIPTION("RTL8180 / RTL8185 / RTL8187SE PCI wireless driver");
  65 MODULE_LICENSE("GPL");
  66 
  67 static const struct pci_device_id rtl8180_table[] = {
  68 
  69         /* rtl8187se */
  70         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8199) },
  71 
  72         /* rtl8185 */
  73         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8185) },
  74         { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x700f) },
  75         { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x701f) },
  76 
  77         /* rtl8180 */
  78         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8180) },
  79         { PCI_DEVICE(0x1799, 0x6001) },
  80         { PCI_DEVICE(0x1799, 0x6020) },
  81         { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x3300) },
  82         { PCI_DEVICE(0x1186, 0x3301) },
  83         { PCI_DEVICE(0x1432, 0x7106) },
  84         { }
  85 };
  86 
  87 MODULE_DEVICE_TABLE(pci, rtl8180_table);
  88 
  89 static const struct ieee80211_rate rtl818x_rates[] = {
  90         { .bitrate = 10, .hw_value = 0, },
  91         { .bitrate = 20, .hw_value = 1, },
  92         { .bitrate = 55, .hw_value = 2, },
  93         { .bitrate = 110, .hw_value = 3, },
  94         { .bitrate = 60, .hw_value = 4, },
  95         { .bitrate = 90, .hw_value = 5, },
  96         { .bitrate = 120, .hw_value = 6, },
  97         { .bitrate = 180, .hw_value = 7, },
  98         { .bitrate = 240, .hw_value = 8, },
  99         { .bitrate = 360, .hw_value = 9, },
 100         { .bitrate = 480, .hw_value = 10, },
 101         { .bitrate = 540, .hw_value = 11, },
 102 };
 103 
 104 static const struct ieee80211_channel rtl818x_channels[] = {
 105         { .center_freq = 2412 },
 106         { .center_freq = 2417 },
 107         { .center_freq = 2422 },
 108         { .center_freq = 2427 },
 109         { .center_freq = 2432 },
 110         { .center_freq = 2437 },
 111         { .center_freq = 2442 },
 112         { .center_freq = 2447 },
 113         { .center_freq = 2452 },
 114         { .center_freq = 2457 },
 115         { .center_freq = 2462 },
 116         { .center_freq = 2467 },
 117         { .center_freq = 2472 },
 118         { .center_freq = 2484 },
 119 };
 120 
 121 /* Queues for rtl8187se card
 122  *
 123  * name | reg  |  queue
 124  *  BC  |  7   |   6
 125  *  MG  |  1   |   0
 126  *  HI  |  6   |   1
 127  *  VO  |  5   |   2
 128  *  VI  |  4   |   3
 129  *  BE  |  3   |   4
 130  *  BK  |  2   |   5
 131  *
 132  * The complete map for DMA kick reg using use all queue is:
 133  * static const int rtl8187se_queues_map[RTL8187SE_NR_TX_QUEUES] =
 134  *      {1, 6, 5, 4, 3, 2, 7};
 135  *
 136  * .. but.. Because for mac80211 4 queues are enough for QoS we use this
 137  *
 138  * name | reg  |  queue
 139  *  BC  |  7   |   4  <- currently not used yet
 140  *  MG  |  1   |   x  <- Not used
 141  *  HI  |  6   |   x  <- Not used
 142  *  VO  |  5   |   0  <- used
 143  *  VI  |  4   |   1  <- used
 144  *  BE  |  3   |   2  <- used
 145  *  BK  |  2   |   3  <- used
 146  *
 147  * Beacon queue could be used, but this is not finished yet.
 148  *
 149  * I thougth about using the other two queues but I decided not to do this:
 150  *
 151  * - I'm unsure whether the mac80211 will ever try to use more than 4 queues
 152  *   by itself.
 153  *
 154  * - I could route MGMT frames (currently sent over VO queue) to the MGMT
 155  *   queue but since mac80211 will do not know about it, I will probably gain
 156  *   some HW priority whenever the VO queue is not empty, but this gain is
 157  *   limited by the fact that I had to stop the mac80211 queue whenever one of
 158  *   the VO or MGMT queues is full, stopping also submitting of MGMT frame
 159  *   to the driver.
 160  *
 161  * - I don't know how to set in the HW the contention window params for MGMT
 162  *   and HI-prio queues.
 163  */
 164 
 165 static const int rtl8187se_queues_map[RTL8187SE_NR_TX_QUEUES] = {5, 4, 3, 2, 7};
 166 
 167 /* Queues for rtl8180/rtl8185 cards
 168  *
 169  * name | reg  |  prio
 170  *  BC  |  7   |   3
 171  *  HI  |  6   |   0
 172  *  NO  |  5   |   1
 173  *  LO  |  4   |   2
 174  *
 175  * The complete map for DMA kick reg using all queue is:
 176  * static const int rtl8180_queues_map[RTL8180_NR_TX_QUEUES] = {6, 5, 4, 7};
 177  *
 178  * .. but .. Because the mac80211 needs at least 4 queues for QoS or
 179  * otherwise QoS can't be done, we use just one.
 180  * Beacon queue could be used, but this is not finished yet.
 181  * Actual map is:
 182  *
 183  * name | reg  |  prio
 184  *  BC  |  7   |   1  <- currently not used yet.
 185  *  HI  |  6   |   x  <- not used
 186  *  NO  |  5   |   x  <- not used
 187  *  LO  |  4   |   0  <- used
 188  */
 189 
 190 static const int rtl8180_queues_map[RTL8180_NR_TX_QUEUES] = {4, 7};
 191 
 192 /* LNA gain table for rtl8187se */
 193 static const u8 rtl8187se_lna_gain[4] = {02, 17, 29, 39};
 194 
 195 void rtl8180_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 196 {
 197         struct rtl8180_priv *priv = dev->priv;
 198         int i = 10;
 199         u32 buf;
 200 
 201         buf = (data << 8) | addr;
 202 
 203         rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf | 0x80);
 204         while (i--) {
 205                 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf);
 206                 if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF))
 207                         return;
 208         }
 209 }
 210 
 211 static void rtl8180_handle_rx(struct ieee80211_hw *dev)
 212 {
 213         struct rtl8180_priv *priv = dev->priv;
 214         struct rtl818x_rx_cmd_desc *cmd_desc;
 215         unsigned int count = 32;
 216         u8 agc, sq;
 217         s8 signal = 1;
 218         dma_addr_t mapping;
 219 
 220         while (count--) {
 221                 void *entry = priv->rx_ring + priv->rx_idx * priv->rx_ring_sz;
 222                 struct sk_buff *skb = priv->rx_buf[priv->rx_idx];
 223                 u32 flags, flags2, flags3 = 0;
 224                 u64 tsft;
 225 
 226                 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
 227                         struct rtl8187se_rx_desc *desc = entry;
 228 
 229                         flags = le32_to_cpu(desc->flags);
 230                         /* if ownership flag is set, then we can trust the
 231                          * HW has written other fields. We must not trust
 232                          * other descriptor data read before we checked (read)
 233                          * the ownership flag
 234                          */
 235                         rmb();
 236                         flags3 = le32_to_cpu(desc->flags3);
 237                         flags2 = le32_to_cpu(desc->flags2);
 238                         tsft = le64_to_cpu(desc->tsft);
 239                 } else {
 240                         struct rtl8180_rx_desc *desc = entry;
 241 
 242                         flags = le32_to_cpu(desc->flags);
 243                         /* same as above */
 244                         rmb();
 245                         flags2 = le32_to_cpu(desc->flags2);
 246                         tsft = le64_to_cpu(desc->tsft);
 247                 }
 248 
 249                 if (flags & RTL818X_RX_DESC_FLAG_OWN)
 250                         return;
 251 
 252                 if (unlikely(flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL |
 253                                       RTL818X_RX_DESC_FLAG_FOF |
 254                                       RTL818X_RX_DESC_FLAG_RX_ERR)))
 255                         goto done;
 256                 else {
 257                         struct ieee80211_rx_status rx_status = {0};
 258                         struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_SIZE);
 259 
 260                         if (unlikely(!new_skb))
 261                                 goto done;
 262 
 263                         mapping = pci_map_single(priv->pdev,
 264                                                skb_tail_pointer(new_skb),
 265                                                MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
 266 
 267                         if (pci_dma_mapping_error(priv->pdev, mapping)) {
 268                                 kfree_skb(new_skb);
 269                                 dev_err(&priv->pdev->dev, "RX DMA map error\n");
 270 
 271                                 goto done;
 272                         }
 273 
 274                         pci_unmap_single(priv->pdev,
 275                                          *((dma_addr_t *)skb->cb),
 276                                          MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
 277                         skb_put(skb, flags & 0xFFF);
 278 
 279                         rx_status.antenna = (flags2 >> 15) & 1;
 280                         rx_status.rate_idx = (flags >> 20) & 0xF;
 281                         agc = (flags2 >> 17) & 0x7F;
 282 
 283                         switch (priv->chip_family) {
 284                         case RTL818X_CHIP_FAMILY_RTL8185:
 285                                 if (rx_status.rate_idx > 3)
 286                                         signal = -clamp_t(u8, agc, 25, 90) - 9;
 287                                 else
 288                                         signal = -clamp_t(u8, agc, 30, 95);
 289                                 break;
 290                         case RTL818X_CHIP_FAMILY_RTL8180:
 291                                 sq = flags2 & 0xff;
 292                                 signal = priv->rf->calc_rssi(agc, sq);
 293                                 break;
 294                         case RTL818X_CHIP_FAMILY_RTL8187SE:
 295                                 /* OFDM measure reported by HW is signed,
 296                                  * in 0.5dBm unit, with zero centered @ -41dBm
 297                                  * input signal.
 298                                  */
 299                                 if (rx_status.rate_idx > 3) {
 300                                         signal = (s8)((flags3 >> 16) & 0xff);
 301                                         signal = signal / 2 - 41;
 302                                 } else {
 303                                         int idx, bb;
 304 
 305                                         idx = (agc & 0x60) >> 5;
 306                                         bb = (agc & 0x1F) * 2;
 307                                         /* bias + BB gain + LNA gain */
 308                                         signal = 4 - bb - rtl8187se_lna_gain[idx];
 309                                 }
 310                                 break;
 311                         }
 312                         rx_status.signal = signal;
 313                         rx_status.freq = dev->conf.chandef.chan->center_freq;
 314                         rx_status.band = dev->conf.chandef.chan->band;
 315                         rx_status.mactime = tsft;
 316                         rx_status.flag |= RX_FLAG_MACTIME_START;
 317                         if (flags & RTL818X_RX_DESC_FLAG_SPLCP)
 318                                 rx_status.enc_flags |= RX_ENC_FLAG_SHORTPRE;
 319                         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
 320                                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 321 
 322                         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 323                         ieee80211_rx_irqsafe(dev, skb);
 324 
 325                         skb = new_skb;
 326                         priv->rx_buf[priv->rx_idx] = skb;
 327                         *((dma_addr_t *) skb->cb) = mapping;
 328                 }
 329 
 330         done:
 331                 cmd_desc = entry;
 332                 cmd_desc->rx_buf = cpu_to_le32(*((dma_addr_t *)skb->cb));
 333                 cmd_desc->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
 334                                            MAX_RX_SIZE);
 335                 if (priv->rx_idx == 31)
 336                         cmd_desc->flags |=
 337                                 cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
 338                 priv->rx_idx = (priv->rx_idx + 1) % 32;
 339         }
 340 }
 341 
 342 static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
 343 {
 344         struct rtl8180_priv *priv = dev->priv;
 345         struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
 346 
 347         while (skb_queue_len(&ring->queue)) {
 348                 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
 349                 struct sk_buff *skb;
 350                 struct ieee80211_tx_info *info;
 351                 u32 flags = le32_to_cpu(entry->flags);
 352 
 353                 if (flags & RTL818X_TX_DESC_FLAG_OWN)
 354                         return;
 355 
 356                 ring->idx = (ring->idx + 1) % ring->entries;
 357                 skb = __skb_dequeue(&ring->queue);
 358                 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
 359                                  skb->len, PCI_DMA_TODEVICE);
 360 
 361                 info = IEEE80211_SKB_CB(skb);
 362                 ieee80211_tx_info_clear_status(info);
 363 
 364                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 365                     (flags & RTL818X_TX_DESC_FLAG_TX_OK))
 366                         info->flags |= IEEE80211_TX_STAT_ACK;
 367 
 368                 info->status.rates[0].count = (flags & 0xFF) + 1;
 369 
 370                 ieee80211_tx_status_irqsafe(dev, skb);
 371                 if (ring->entries - skb_queue_len(&ring->queue) == 2)
 372                         ieee80211_wake_queue(dev, prio);
 373         }
 374 }
 375 
 376 static irqreturn_t rtl8187se_interrupt(int irq, void *dev_id)
 377 {
 378         struct ieee80211_hw *dev = dev_id;
 379         struct rtl8180_priv *priv = dev->priv;
 380         u32 reg;
 381         unsigned long flags;
 382         static int desc_err;
 383 
 384         spin_lock_irqsave(&priv->lock, flags);
 385         /* Note: 32-bit interrupt status */
 386         reg = rtl818x_ioread32(priv, &priv->map->INT_STATUS_SE);
 387         if (unlikely(reg == 0xFFFFFFFF)) {
 388                 spin_unlock_irqrestore(&priv->lock, flags);
 389                 return IRQ_HANDLED;
 390         }
 391 
 392         rtl818x_iowrite32(priv, &priv->map->INT_STATUS_SE, reg);
 393 
 394         if (reg & IMR_TIMEOUT1)
 395                 rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 396 
 397         if (reg & (IMR_TBDOK | IMR_TBDER))
 398                 rtl8180_handle_tx(dev, 4);
 399 
 400         if (reg & (IMR_TVODOK | IMR_TVODER))
 401                 rtl8180_handle_tx(dev, 0);
 402 
 403         if (reg & (IMR_TVIDOK | IMR_TVIDER))
 404                 rtl8180_handle_tx(dev, 1);
 405 
 406         if (reg & (IMR_TBEDOK | IMR_TBEDER))
 407                 rtl8180_handle_tx(dev, 2);
 408 
 409         if (reg & (IMR_TBKDOK | IMR_TBKDER))
 410                 rtl8180_handle_tx(dev, 3);
 411 
 412         if (reg & (IMR_ROK | IMR_RER | RTL818X_INT_SE_RX_DU | IMR_RQOSOK))
 413                 rtl8180_handle_rx(dev);
 414         /* The interface sometimes generates several RX DMA descriptor errors
 415          * at startup. Do not report these.
 416          */
 417         if ((reg & RTL818X_INT_SE_RX_DU) && desc_err++ > 2)
 418                 if (net_ratelimit())
 419                         wiphy_err(dev->wiphy, "No RX DMA Descriptor avail\n");
 420 
 421         spin_unlock_irqrestore(&priv->lock, flags);
 422         return IRQ_HANDLED;
 423 }
 424 
 425 static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
 426 {
 427         struct ieee80211_hw *dev = dev_id;
 428         struct rtl8180_priv *priv = dev->priv;
 429         u16 reg;
 430 
 431         spin_lock(&priv->lock);
 432         reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
 433         if (unlikely(reg == 0xFFFF)) {
 434                 spin_unlock(&priv->lock);
 435                 return IRQ_HANDLED;
 436         }
 437 
 438         rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
 439 
 440         if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
 441                 rtl8180_handle_tx(dev, 1);
 442 
 443         if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
 444                 rtl8180_handle_tx(dev, 0);
 445 
 446         if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
 447                 rtl8180_handle_rx(dev);
 448 
 449         spin_unlock(&priv->lock);
 450 
 451         return IRQ_HANDLED;
 452 }
 453 
 454 static void rtl8180_tx(struct ieee80211_hw *dev,
 455                        struct ieee80211_tx_control *control,
 456                        struct sk_buff *skb)
 457 {
 458         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 459         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 460         struct rtl8180_priv *priv = dev->priv;
 461         struct rtl8180_tx_ring *ring;
 462         struct rtl8180_tx_desc *entry;
 463         unsigned long flags;
 464         unsigned int idx, prio, hw_prio;
 465         dma_addr_t mapping;
 466         u32 tx_flags;
 467         u8 rc_flags;
 468         u16 plcp_len = 0;
 469         __le16 rts_duration = 0;
 470         /* do arithmetic and then convert to le16 */
 471         u16 frame_duration = 0;
 472 
 473         prio = skb_get_queue_mapping(skb);
 474         ring = &priv->tx_ring[prio];
 475 
 476         mapping = pci_map_single(priv->pdev, skb->data,
 477                                  skb->len, PCI_DMA_TODEVICE);
 478 
 479         if (pci_dma_mapping_error(priv->pdev, mapping)) {
 480                 kfree_skb(skb);
 481                 dev_err(&priv->pdev->dev, "TX DMA mapping error\n");
 482                 return;
 483         }
 484 
 485         tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
 486                    RTL818X_TX_DESC_FLAG_LS |
 487                    (ieee80211_get_tx_rate(dev, info)->hw_value << 24) |
 488                    skb->len;
 489 
 490         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180)
 491                 tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
 492                             RTL818X_TX_DESC_FLAG_NO_ENC;
 493 
 494         rc_flags = info->control.rates[0].flags;
 495 
 496         /* HW will perform RTS-CTS when only RTS flags is set.
 497          * HW will perform CTS-to-self when both RTS and CTS flags are set.
 498          * RTS rate and RTS duration will be used also for CTS-to-self.
 499          */
 500         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 501                 tx_flags |= RTL818X_TX_DESC_FLAG_RTS;
 502                 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 503                 rts_duration = ieee80211_rts_duration(dev, priv->vif,
 504                                                 skb->len, info);
 505         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 506                 tx_flags |= RTL818X_TX_DESC_FLAG_RTS | RTL818X_TX_DESC_FLAG_CTS;
 507                 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 508                 rts_duration = ieee80211_ctstoself_duration(dev, priv->vif,
 509                                                 skb->len, info);
 510         }
 511 
 512         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180) {
 513                 unsigned int remainder;
 514 
 515                 plcp_len = DIV_ROUND_UP(16 * (skb->len + 4),
 516                                 (ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
 517                 remainder = (16 * (skb->len + 4)) %
 518                             ((ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
 519                 if (remainder <= 6)
 520                         plcp_len |= 1 << 15;
 521         }
 522 
 523         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
 524                 __le16 duration;
 525                 /* SIFS time (required by HW) is already included by
 526                  * ieee80211_generic_frame_duration
 527                  */
 528                 duration = ieee80211_generic_frame_duration(dev, priv->vif,
 529                                         NL80211_BAND_2GHZ, skb->len,
 530                                         ieee80211_get_tx_rate(dev, info));
 531 
 532                 frame_duration =  priv->ack_time + le16_to_cpu(duration);
 533         }
 534 
 535         spin_lock_irqsave(&priv->lock, flags);
 536 
 537         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
 538                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
 539                         priv->seqno += 0x10;
 540                 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
 541                 hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
 542         }
 543 
 544         idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
 545         entry = &ring->desc[idx];
 546 
 547         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
 548                 entry->frame_duration = cpu_to_le16(frame_duration);
 549                 entry->frame_len_se = cpu_to_le16(skb->len);
 550 
 551                 /* tpc polarity */
 552                 entry->flags3 = cpu_to_le16(1<<4);
 553         } else
 554                 entry->frame_len = cpu_to_le32(skb->len);
 555 
 556         entry->rts_duration = rts_duration;
 557         entry->plcp_len = cpu_to_le16(plcp_len);
 558         entry->tx_buf = cpu_to_le32(mapping);
 559 
 560         entry->retry_limit = info->control.rates[0].count - 1;
 561 
 562         /* We must be sure that tx_flags is written last because the HW
 563          * looks at it to check if the rest of data is valid or not
 564          */
 565         wmb();
 566         entry->flags = cpu_to_le32(tx_flags);
 567         /* We must be sure this has been written before followings HW
 568          * register write, because this write will made the HW attempts
 569          * to DMA the just-written data
 570          */
 571         wmb();
 572 
 573         __skb_queue_tail(&ring->queue, skb);
 574         if (ring->entries - skb_queue_len(&ring->queue) < 2)
 575                 ieee80211_stop_queue(dev, prio);
 576 
 577         spin_unlock_irqrestore(&priv->lock, flags);
 578 
 579         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
 580                 /* just poll: rings are stopped with TPPollStop reg */
 581                 hw_prio = rtl8187se_queues_map[prio];
 582                 rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING,
 583                          (1 << hw_prio));
 584         } else {
 585                 hw_prio = rtl8180_queues_map[prio];
 586                 rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING,
 587                          (1 << hw_prio) | /* ring to poll  */
 588                          (1<<1) | (1<<2));/* stopped rings */
 589         }
 590 }
 591 
 592 static void rtl8180_set_anaparam3(struct rtl8180_priv *priv, u16 anaparam3)
 593 {
 594         u8 reg;
 595 
 596         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 597                          RTL818X_EEPROM_CMD_CONFIG);
 598 
 599         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 600         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 601                  reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 602 
 603         rtl818x_iowrite16(priv, &priv->map->ANAPARAM3, anaparam3);
 604 
 605         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 606                  reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 607 
 608         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 609                          RTL818X_EEPROM_CMD_NORMAL);
 610 }
 611 
 612 void rtl8180_set_anaparam2(struct rtl8180_priv *priv, u32 anaparam2)
 613 {
 614         u8 reg;
 615 
 616         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 617                          RTL818X_EEPROM_CMD_CONFIG);
 618 
 619         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 620         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 621                  reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 622 
 623         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, anaparam2);
 624 
 625         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 626                  reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 627 
 628         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 629                          RTL818X_EEPROM_CMD_NORMAL);
 630 }
 631 
 632 void rtl8180_set_anaparam(struct rtl8180_priv *priv, u32 anaparam)
 633 {
 634         u8 reg;
 635 
 636         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 637         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 638         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 639                  reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 640         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
 641         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 642                  reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 643         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 644 }
 645 
 646 static void rtl8187se_mac_config(struct ieee80211_hw *dev)
 647 {
 648         struct rtl8180_priv *priv = dev->priv;
 649         u8 reg;
 650 
 651         rtl818x_iowrite32(priv, REG_ADDR4(0x1F0), 0);
 652         rtl818x_ioread32(priv, REG_ADDR4(0x1F0));
 653         rtl818x_iowrite32(priv, REG_ADDR4(0x1F4), 0);
 654         rtl818x_ioread32(priv, REG_ADDR4(0x1F4));
 655         rtl818x_iowrite8(priv, REG_ADDR1(0x1F8), 0);
 656         rtl818x_ioread8(priv, REG_ADDR1(0x1F8));
 657         /* Enable DA10 TX power saving */
 658         reg = rtl818x_ioread8(priv, &priv->map->PHY_PR);
 659         rtl818x_iowrite8(priv, &priv->map->PHY_PR, reg | 0x04);
 660         /* Power */
 661         rtl818x_iowrite16(priv, PI_DATA_REG, 0x1000);
 662         rtl818x_iowrite16(priv, SI_DATA_REG, 0x1000);
 663         /* AFE - default to power ON */
 664         rtl818x_iowrite16(priv, REG_ADDR2(0x370), 0x0560);
 665         rtl818x_iowrite16(priv, REG_ADDR2(0x372), 0x0560);
 666         rtl818x_iowrite16(priv, REG_ADDR2(0x374), 0x0DA4);
 667         rtl818x_iowrite16(priv, REG_ADDR2(0x376), 0x0DA4);
 668         rtl818x_iowrite16(priv, REG_ADDR2(0x378), 0x0560);
 669         rtl818x_iowrite16(priv, REG_ADDR2(0x37A), 0x0560);
 670         rtl818x_iowrite16(priv, REG_ADDR2(0x37C), 0x00EC);
 671         rtl818x_iowrite16(priv, REG_ADDR2(0x37E), 0x00EC);
 672         rtl818x_iowrite8(priv, REG_ADDR1(0x24E), 0x01);
 673         /* unknown, needed for suspend to RAM resume */
 674         rtl818x_iowrite8(priv, REG_ADDR1(0x0A), 0x72);
 675 }
 676 
 677 static void rtl8187se_set_antenna_config(struct ieee80211_hw *dev, u8 def_ant,
 678                                          bool diversity)
 679 {
 680         struct rtl8180_priv *priv = dev->priv;
 681 
 682         rtl8225_write_phy_cck(dev, 0x0C, 0x09);
 683         if (diversity) {
 684                 if (def_ant == 1) {
 685                         rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x00);
 686                         rtl8225_write_phy_cck(dev, 0x11, 0xBB);
 687                         rtl8225_write_phy_cck(dev, 0x01, 0xC7);
 688                         rtl8225_write_phy_ofdm(dev, 0x0D, 0x54);
 689                         rtl8225_write_phy_ofdm(dev, 0x18, 0xB2);
 690                 } else { /* main antenna */
 691                         rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x03);
 692                         rtl8225_write_phy_cck(dev, 0x11, 0x9B);
 693                         rtl8225_write_phy_cck(dev, 0x01, 0xC7);
 694                         rtl8225_write_phy_ofdm(dev, 0x0D, 0x5C);
 695                         rtl8225_write_phy_ofdm(dev, 0x18, 0xB2);
 696                 }
 697         } else { /* disable antenna diversity */
 698                 if (def_ant == 1) {
 699                         rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x00);
 700                         rtl8225_write_phy_cck(dev, 0x11, 0xBB);
 701                         rtl8225_write_phy_cck(dev, 0x01, 0x47);
 702                         rtl8225_write_phy_ofdm(dev, 0x0D, 0x54);
 703                         rtl8225_write_phy_ofdm(dev, 0x18, 0x32);
 704                 } else { /* main antenna */
 705                         rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x03);
 706                         rtl8225_write_phy_cck(dev, 0x11, 0x9B);
 707                         rtl8225_write_phy_cck(dev, 0x01, 0x47);
 708                         rtl8225_write_phy_ofdm(dev, 0x0D, 0x5C);
 709                         rtl8225_write_phy_ofdm(dev, 0x18, 0x32);
 710                 }
 711         }
 712         /* priv->curr_ant = def_ant; */
 713 }
 714 
 715 static void rtl8180_int_enable(struct ieee80211_hw *dev)
 716 {
 717         struct rtl8180_priv *priv = dev->priv;
 718 
 719         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
 720                 rtl818x_iowrite32(priv, &priv->map->IMR,
 721                           IMR_TBDER | IMR_TBDOK |
 722                           IMR_TVODER | IMR_TVODOK |
 723                           IMR_TVIDER | IMR_TVIDOK |
 724                           IMR_TBEDER | IMR_TBEDOK |
 725                           IMR_TBKDER | IMR_TBKDOK |
 726                           IMR_RDU | IMR_RER |
 727                           IMR_ROK | IMR_RQOSOK);
 728         } else {
 729                 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 730         }
 731 }
 732 
 733 static void rtl8180_int_disable(struct ieee80211_hw *dev)
 734 {
 735         struct rtl8180_priv *priv = dev->priv;
 736 
 737         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
 738                 rtl818x_iowrite32(priv, &priv->map->IMR, 0);
 739         } else {
 740                 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 741         }
 742 }
 743 
 744 static void rtl8180_conf_basic_rates(struct ieee80211_hw *dev,
 745                             u32 basic_mask)
 746 {
 747         struct rtl8180_priv *priv = dev->priv;
 748         u16 reg;
 749         u32 resp_mask;
 750         u8 basic_max;
 751         u8 resp_max, resp_min;
 752 
 753         resp_mask = basic_mask;
 754         /* IEEE80211 says the response rate should be equal to the highest basic
 755          * rate that is not faster than received frame. But it says also that if
 756          * the basic rate set does not contains any rate for the current
 757          * modulation class then mandatory rate set must be used for that
 758          * modulation class. Eventually add OFDM mandatory rates..
 759          */
 760         if ((resp_mask & 0xf) == resp_mask)
 761                 resp_mask |= 0x150; /* 6, 12, 24Mbps */
 762 
 763         switch (priv->chip_family) {
 764 
 765         case RTL818X_CHIP_FAMILY_RTL8180:
 766                 /* in 8180 this is NOT a BITMAP */
 767                 basic_max = fls(basic_mask) - 1;
 768                 reg = rtl818x_ioread16(priv, &priv->map->BRSR);
 769                 reg &= ~3;
 770                 reg |= basic_max;
 771                 rtl818x_iowrite16(priv, &priv->map->BRSR, reg);
 772                 break;
 773 
 774         case RTL818X_CHIP_FAMILY_RTL8185:
 775                 resp_max = fls(resp_mask) - 1;
 776                 resp_min = ffs(resp_mask) - 1;
 777                 /* in 8185 this is a BITMAP */
 778                 rtl818x_iowrite16(priv, &priv->map->BRSR, basic_mask);
 779                 rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (resp_max << 4) |
 780                                 resp_min);
 781                 break;
 782 
 783         case RTL818X_CHIP_FAMILY_RTL8187SE:
 784                 /* in 8187se this is a BITMAP. BRSR reg actually sets
 785                  * response rates.
 786                  */
 787                 rtl818x_iowrite16(priv, &priv->map->BRSR_8187SE, resp_mask);
 788                 break;
 789         }
 790 }
 791 
 792 static void rtl8180_config_cardbus(struct ieee80211_hw *dev)
 793 {
 794         struct rtl8180_priv *priv = dev->priv;
 795         u16 reg16;
 796         u8 reg8;
 797 
 798         reg8 = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 799         reg8 |= 1 << 1;
 800         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg8);
 801 
 802         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
 803                 rtl818x_iowrite16(priv, FEMR_SE, 0xffff);
 804         } else {
 805                 reg16 = rtl818x_ioread16(priv, &priv->map->FEMR);
 806                 reg16 |= (1 << 15) | (1 << 14) | (1 << 4);
 807                 rtl818x_iowrite16(priv, &priv->map->FEMR, reg16);
 808         }
 809 
 810 }
 811 
 812 static int rtl8180_init_hw(struct ieee80211_hw *dev)
 813 {
 814         struct rtl8180_priv *priv = dev->priv;
 815         u16 reg;
 816         u32 reg32;
 817 
 818         rtl818x_iowrite8(priv, &priv->map->CMD, 0);
 819         rtl818x_ioread8(priv, &priv->map->CMD);
 820         msleep(10);
 821 
 822         /* reset */
 823         rtl8180_int_disable(dev);
 824         rtl818x_ioread8(priv, &priv->map->CMD);
 825 
 826         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 827         reg &= (1 << 1);
 828         reg |= RTL818X_CMD_RESET;
 829         rtl818x_iowrite8(priv, &priv->map->CMD, RTL818X_CMD_RESET);
 830         rtl818x_ioread8(priv, &priv->map->CMD);
 831         msleep(200);
 832 
 833         /* check success of reset */
 834         if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
 835                 wiphy_err(dev->wiphy, "reset timeout!\n");
 836                 return -ETIMEDOUT;
 837         }
 838 
 839         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 840         rtl818x_ioread8(priv, &priv->map->CMD);
 841         msleep(200);
 842 
 843         if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
 844                 rtl8180_config_cardbus(dev);
 845         }
 846 
 847         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
 848                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_ENEDCA);
 849         else
 850                 rtl818x_iowrite8(priv, &priv->map->MSR, 0);
 851 
 852         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
 853                 rtl8180_set_anaparam(priv, priv->anaparam);
 854 
 855         rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
 856         /* mac80211 queue have higher prio for lower index. The last queue
 857          * (that mac80211 is not aware of) is reserved for beacons (and have
 858          * the highest priority on the NIC)
 859          */
 860         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8187SE) {
 861                 rtl818x_iowrite32(priv, &priv->map->TBDA,
 862                                   priv->tx_ring[1].dma);
 863                 rtl818x_iowrite32(priv, &priv->map->TLPDA,
 864                                   priv->tx_ring[0].dma);
 865         } else {
 866                 rtl818x_iowrite32(priv, &priv->map->TBDA,
 867                                   priv->tx_ring[4].dma);
 868                 rtl818x_iowrite32(priv, &priv->map->TVODA,
 869                                   priv->tx_ring[0].dma);
 870                 rtl818x_iowrite32(priv, &priv->map->TVIDA,
 871                                   priv->tx_ring[1].dma);
 872                 rtl818x_iowrite32(priv, &priv->map->TBEDA,
 873                                   priv->tx_ring[2].dma);
 874                 rtl818x_iowrite32(priv, &priv->map->TBKDA,
 875                                   priv->tx_ring[3].dma);
 876         }
 877 
 878         /* TODO: necessary? specs indicate not */
 879         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 880         reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
 881         rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
 882         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
 883                 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
 884                 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
 885         }
 886         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 887 
 888         /* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */
 889 
 890         /* TODO: turn off hw wep on rtl8180 */
 891 
 892         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 893 
 894         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
 895                 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 896                 rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
 897         } else {
 898                 rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
 899 
 900                 rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
 901                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
 902         }
 903 
 904         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
 905                 /* TODO: set ClkRun enable? necessary? */
 906                 reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
 907                 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
 908                 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 909                 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 910                 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
 911                 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 912                 /* fix eccessive IFS after CTS-to-self */
 913                 if (priv->map_pio) {
 914                         u8 reg;
 915 
 916                         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT);
 917                         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 918                         rtl818x_iowrite8(priv, REG_ADDR1(0xff), 0x35);
 919                         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 920                 } else
 921                         rtl818x_iowrite8(priv, REG_ADDR1(0x1ff), 0x35);
 922         }
 923 
 924         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
 925 
 926                 /* the set auto rate fallback bitmask from 1M to 54 Mb/s */
 927                 rtl818x_iowrite16(priv, ARFR, 0xFFF);
 928                 rtl818x_ioread16(priv, ARFR);
 929 
 930                 /* stop unused queus (no dma alloc) */
 931                 rtl818x_iowrite8(priv, &priv->map->TPPOLL_STOP,
 932                                RTL818x_TPPOLL_STOP_MG | RTL818x_TPPOLL_STOP_HI);
 933 
 934                 rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0x00);
 935                 rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
 936 
 937                 rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
 938 
 939                 /* some black magic here.. */
 940                 rtl8187se_mac_config(dev);
 941 
 942                 rtl818x_iowrite16(priv, RFSW_CTRL, 0x569A);
 943                 rtl818x_ioread16(priv, RFSW_CTRL);
 944 
 945                 rtl8180_set_anaparam(priv, RTL8225SE_ANAPARAM_ON);
 946                 rtl8180_set_anaparam2(priv, RTL8225SE_ANAPARAM2_ON);
 947                 rtl8180_set_anaparam3(priv, RTL8225SE_ANAPARAM3);
 948 
 949 
 950                 rtl818x_iowrite8(priv, &priv->map->CONFIG5,
 951                             rtl818x_ioread8(priv, &priv->map->CONFIG5) & 0x7F);
 952 
 953                 /*probably this switch led on */
 954                 rtl818x_iowrite8(priv, &priv->map->PGSELECT,
 955                             rtl818x_ioread8(priv, &priv->map->PGSELECT) | 0x08);
 956 
 957                 rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
 958                 rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1BFF);
 959                 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
 960 
 961                 rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x4003);
 962 
 963                 /* the reference code mac hardcode table write
 964                  * this reg by doing byte-wide accesses.
 965                  * It does it just for lowest and highest byte..
 966                  */
 967                 reg32 = rtl818x_ioread32(priv, &priv->map->RF_PARA);
 968                 reg32 &= 0x00ffff00;
 969                 reg32 |= 0xb8000054;
 970                 rtl818x_iowrite32(priv, &priv->map->RF_PARA, reg32);
 971         } else
 972                 /* stop unused queus (no dma alloc) */
 973                 rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING,
 974                             (1<<1) | (1<<2));
 975 
 976         priv->rf->init(dev);
 977 
 978         /* default basic rates are 1,2 Mbps for rtl8180. 1,2,6,9,12,18,24 Mbps
 979          * otherwise. bitmask 0x3 and 0x01f3 respectively.
 980          * NOTE: currenty rtl8225 RF code changes basic rates, so we need to do
 981          * this after rf init.
 982          * TODO: try to find out whether RF code really needs to do this..
 983          */
 984         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
 985                 rtl8180_conf_basic_rates(dev, 0x3);
 986         else
 987                 rtl8180_conf_basic_rates(dev, 0x1f3);
 988 
 989         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
 990                 rtl8187se_set_antenna_config(dev,
 991                                              priv->antenna_diversity_default,
 992                                              priv->antenna_diversity_en);
 993         return 0;
 994 }
 995 
 996 static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
 997 {
 998         struct rtl8180_priv *priv = dev->priv;
 999         struct rtl818x_rx_cmd_desc *entry;
1000         int i;
1001 
1002         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
1003                 priv->rx_ring_sz = sizeof(struct rtl8187se_rx_desc);
1004         else
1005                 priv->rx_ring_sz = sizeof(struct rtl8180_rx_desc);
1006 
1007         priv->rx_ring = pci_zalloc_consistent(priv->pdev, priv->rx_ring_sz * 32,
1008                                               &priv->rx_ring_dma);
1009         if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
1010                 wiphy_err(dev->wiphy, "Cannot allocate RX ring\n");
1011                 return -ENOMEM;
1012         }
1013 
1014         priv->rx_idx = 0;
1015 
1016         for (i = 0; i < 32; i++) {
1017                 struct sk_buff *skb = dev_alloc_skb(MAX_RX_SIZE);
1018                 dma_addr_t *mapping;
1019                 entry = priv->rx_ring + priv->rx_ring_sz*i;
1020                 if (!skb) {
1021                         pci_free_consistent(priv->pdev, priv->rx_ring_sz * 32,
1022                                         priv->rx_ring, priv->rx_ring_dma);
1023                         wiphy_err(dev->wiphy, "Cannot allocate RX skb\n");
1024                         return -ENOMEM;
1025                 }
1026                 priv->rx_buf[i] = skb;
1027                 mapping = (dma_addr_t *)skb->cb;
1028                 *mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb),
1029                                           MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
1030 
1031                 if (pci_dma_mapping_error(priv->pdev, *mapping)) {
1032                         kfree_skb(skb);
1033                         pci_free_consistent(priv->pdev, priv->rx_ring_sz * 32,
1034                                         priv->rx_ring, priv->rx_ring_dma);
1035                         wiphy_err(dev->wiphy, "Cannot map DMA for RX skb\n");
1036                         return -ENOMEM;
1037                 }
1038 
1039                 entry->rx_buf = cpu_to_le32(*mapping);
1040                 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
1041                                            MAX_RX_SIZE);
1042         }
1043         entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
1044         return 0;
1045 }
1046 
1047 static void rtl8180_free_rx_ring(struct ieee80211_hw *dev)
1048 {
1049         struct rtl8180_priv *priv = dev->priv;
1050         int i;
1051 
1052         for (i = 0; i < 32; i++) {
1053                 struct sk_buff *skb = priv->rx_buf[i];
1054                 if (!skb)
1055                         continue;
1056 
1057                 pci_unmap_single(priv->pdev,
1058                                  *((dma_addr_t *)skb->cb),
1059                                  MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
1060                 kfree_skb(skb);
1061         }
1062 
1063         pci_free_consistent(priv->pdev, priv->rx_ring_sz * 32,
1064                             priv->rx_ring, priv->rx_ring_dma);
1065         priv->rx_ring = NULL;
1066 }
1067 
1068 static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
1069                                 unsigned int prio, unsigned int entries)
1070 {
1071         struct rtl8180_priv *priv = dev->priv;
1072         struct rtl8180_tx_desc *ring;
1073         dma_addr_t dma;
1074         int i;
1075 
1076         ring = pci_zalloc_consistent(priv->pdev, sizeof(*ring) * entries,
1077                                      &dma);
1078         if (!ring || (unsigned long)ring & 0xFF) {
1079                 wiphy_err(dev->wiphy, "Cannot allocate TX ring (prio = %d)\n",
1080                           prio);
1081                 return -ENOMEM;
1082         }
1083 
1084         priv->tx_ring[prio].desc = ring;
1085         priv->tx_ring[prio].dma = dma;
1086         priv->tx_ring[prio].idx = 0;
1087         priv->tx_ring[prio].entries = entries;
1088         skb_queue_head_init(&priv->tx_ring[prio].queue);
1089 
1090         for (i = 0; i < entries; i++)
1091                 ring[i].next_tx_desc =
1092                         cpu_to_le32((u32)dma + ((i + 1) % entries) * sizeof(*ring));
1093 
1094         return 0;
1095 }
1096 
1097 static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio)
1098 {
1099         struct rtl8180_priv *priv = dev->priv;
1100         struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
1101 
1102         while (skb_queue_len(&ring->queue)) {
1103                 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
1104                 struct sk_buff *skb = __skb_dequeue(&ring->queue);
1105 
1106                 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
1107                                  skb->len, PCI_DMA_TODEVICE);
1108                 kfree_skb(skb);
1109                 ring->idx = (ring->idx + 1) % ring->entries;
1110         }
1111 
1112         pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries,
1113                             ring->desc, ring->dma);
1114         ring->desc = NULL;
1115 }
1116 
1117 static int rtl8180_start(struct ieee80211_hw *dev)
1118 {
1119         struct rtl8180_priv *priv = dev->priv;
1120         int ret, i;
1121         u32 reg;
1122 
1123         ret = rtl8180_init_rx_ring(dev);
1124         if (ret)
1125                 return ret;
1126 
1127         for (i = 0; i < (dev->queues + 1); i++)
1128                 if ((ret = rtl8180_init_tx_ring(dev, i, 16)))
1129                         goto err_free_rings;
1130 
1131         ret = rtl8180_init_hw(dev);
1132         if (ret)
1133                 goto err_free_rings;
1134 
1135         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
1136                 ret = request_irq(priv->pdev->irq, rtl8187se_interrupt,
1137                           IRQF_SHARED, KBUILD_MODNAME, dev);
1138         } else {
1139                 ret = request_irq(priv->pdev->irq, rtl8180_interrupt,
1140                           IRQF_SHARED, KBUILD_MODNAME, dev);
1141         }
1142 
1143         if (ret) {
1144                 wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
1145                 goto err_free_rings;
1146         }
1147 
1148         rtl8180_int_enable(dev);
1149 
1150         /* in rtl8187se at MAR regs offset there is the management
1151          * TX descriptor DMA addres..
1152          */
1153         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8187SE) {
1154                 rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
1155                 rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
1156         }
1157 
1158         reg = RTL818X_RX_CONF_ONLYERLPKT |
1159               RTL818X_RX_CONF_RX_AUTORESETPHY |
1160               RTL818X_RX_CONF_MGMT |
1161               RTL818X_RX_CONF_DATA |
1162               (7 << 8 /* MAX RX DMA */) |
1163               RTL818X_RX_CONF_BROADCAST |
1164               RTL818X_RX_CONF_NICMAC;
1165 
1166         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185)
1167                 reg |= RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2;
1168         else if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180) {
1169                 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
1170                         ? RTL818X_RX_CONF_CSDM1 : 0;
1171                 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
1172                         ? RTL818X_RX_CONF_CSDM2 : 0;
1173         } else {
1174                 reg &= ~(RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2);
1175         }
1176 
1177         priv->rx_conf = reg;
1178         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
1179 
1180         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
1181                 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
1182 
1183                 /* CW is not on per-packet basis.
1184                  * in rtl8185 the CW_VALUE reg is used.
1185                  * in rtl8187se the AC param regs are used.
1186                  */
1187                 reg &= ~RTL818X_CW_CONF_PERPACKET_CW;
1188                 /* retry limit IS on per-packet basis.
1189                  * the short and long retry limit in TX_CONF
1190                  * reg are ignored
1191                  */
1192                 reg |= RTL818X_CW_CONF_PERPACKET_RETRY;
1193                 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
1194 
1195                 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
1196                 /* TX antenna and TX gain are not on per-packet basis.
1197                  * TX Antenna is selected by ANTSEL reg (RX in BB regs).
1198                  * TX gain is selected with CCK_TX_AGC and OFDM_TX_AGC regs
1199                  */
1200                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN;
1201                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL;
1202                 reg |=  RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
1203                 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
1204 
1205                 /* disable early TX */
1206                 rtl818x_iowrite8(priv, (u8 __iomem *)priv->map + 0xec, 0x3f);
1207         }
1208 
1209         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1210         reg |= (6 << 21 /* MAX TX DMA */) |
1211                RTL818X_TX_CONF_NO_ICV;
1212 
1213         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
1214                 reg |= 1<<30;  /*  "duration procedure mode" */
1215 
1216         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180)
1217                 reg &= ~RTL818X_TX_CONF_PROBE_DTS;
1218         else
1219                 reg &= ~RTL818X_TX_CONF_HW_SEQNUM;
1220 
1221         reg &= ~RTL818X_TX_CONF_DISCW;
1222 
1223         /* different meaning, same value on both rtl8185 and rtl8180 */
1224         reg &= ~RTL818X_TX_CONF_SAT_HWPLCP;
1225 
1226         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1227 
1228         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1229         reg |= RTL818X_CMD_RX_ENABLE;
1230         reg |= RTL818X_CMD_TX_ENABLE;
1231         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1232 
1233         return 0;
1234 
1235  err_free_rings:
1236         rtl8180_free_rx_ring(dev);
1237         for (i = 0; i < (dev->queues + 1); i++)
1238                 if (priv->tx_ring[i].desc)
1239                         rtl8180_free_tx_ring(dev, i);
1240 
1241         return ret;
1242 }
1243 
1244 static void rtl8180_stop(struct ieee80211_hw *dev)
1245 {
1246         struct rtl8180_priv *priv = dev->priv;
1247         u8 reg;
1248         int i;
1249 
1250         rtl8180_int_disable(dev);
1251 
1252         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1253         reg &= ~RTL818X_CMD_TX_ENABLE;
1254         reg &= ~RTL818X_CMD_RX_ENABLE;
1255         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1256 
1257         priv->rf->stop(dev);
1258 
1259         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1260         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
1261         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
1262         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1263 
1264         free_irq(priv->pdev->irq, dev);
1265 
1266         rtl8180_free_rx_ring(dev);
1267         for (i = 0; i < (dev->queues + 1); i++)
1268                 rtl8180_free_tx_ring(dev, i);
1269 }
1270 
1271 static u64 rtl8180_get_tsf(struct ieee80211_hw *dev,
1272                            struct ieee80211_vif *vif)
1273 {
1274         struct rtl8180_priv *priv = dev->priv;
1275 
1276         return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
1277                (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
1278 }
1279 
1280 static void rtl8180_beacon_work(struct work_struct *work)
1281 {
1282         struct rtl8180_vif *vif_priv =
1283                 container_of(work, struct rtl8180_vif, beacon_work.work);
1284         struct ieee80211_vif *vif =
1285                 container_of((void *)vif_priv, struct ieee80211_vif, drv_priv);
1286         struct ieee80211_hw *dev = vif_priv->dev;
1287         struct ieee80211_mgmt *mgmt;
1288         struct sk_buff *skb;
1289 
1290         /* don't overflow the tx ring */
1291         if (ieee80211_queue_stopped(dev, 0))
1292                 goto resched;
1293 
1294         /* grab a fresh beacon */
1295         skb = ieee80211_beacon_get(dev, vif);
1296         if (!skb)
1297                 goto resched;
1298 
1299         /*
1300          * update beacon timestamp w/ TSF value
1301          * TODO: make hardware update beacon timestamp
1302          */
1303         mgmt = (struct ieee80211_mgmt *)skb->data;
1304         mgmt->u.beacon.timestamp = cpu_to_le64(rtl8180_get_tsf(dev, vif));
1305 
1306         /* TODO: use actual beacon queue */
1307         skb_set_queue_mapping(skb, 0);
1308 
1309         rtl8180_tx(dev, NULL, skb);
1310 
1311 resched:
1312         /*
1313          * schedule next beacon
1314          * TODO: use hardware support for beacon timing
1315          */
1316         schedule_delayed_work(&vif_priv->beacon_work,
1317                         usecs_to_jiffies(1024 * vif->bss_conf.beacon_int));
1318 }
1319 
1320 static int rtl8180_add_interface(struct ieee80211_hw *dev,
1321                                  struct ieee80211_vif *vif)
1322 {
1323         struct rtl8180_priv *priv = dev->priv;
1324         struct rtl8180_vif *vif_priv;
1325 
1326         /*
1327          * We only support one active interface at a time.
1328          */
1329         if (priv->vif)
1330                 return -EBUSY;
1331 
1332         switch (vif->type) {
1333         case NL80211_IFTYPE_STATION:
1334         case NL80211_IFTYPE_ADHOC:
1335                 break;
1336         default:
1337                 return -EOPNOTSUPP;
1338         }
1339 
1340         priv->vif = vif;
1341 
1342         /* Initialize driver private area */
1343         vif_priv = (struct rtl8180_vif *)&vif->drv_priv;
1344         vif_priv->dev = dev;
1345         INIT_DELAYED_WORK(&vif_priv->beacon_work, rtl8180_beacon_work);
1346         vif_priv->enable_beacon = false;
1347 
1348         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1349         rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->MAC[0],
1350                           le32_to_cpu(*(__le32 *)vif->addr));
1351         rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->MAC[4],
1352                           le16_to_cpu(*(__le16 *)(vif->addr + 4)));
1353         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1354 
1355         return 0;
1356 }
1357 
1358 static void rtl8180_remove_interface(struct ieee80211_hw *dev,
1359                                      struct ieee80211_vif *vif)
1360 {
1361         struct rtl8180_priv *priv = dev->priv;
1362         priv->vif = NULL;
1363 }
1364 
1365 static int rtl8180_config(struct ieee80211_hw *dev, u32 changed)
1366 {
1367         struct rtl8180_priv *priv = dev->priv;
1368         struct ieee80211_conf *conf = &dev->conf;
1369 
1370         priv->rf->set_chan(dev, conf);
1371 
1372         return 0;
1373 }
1374 
1375 static void rtl8187se_conf_ac_parm(struct ieee80211_hw *dev, u8 queue)
1376 {
1377         const struct ieee80211_tx_queue_params *params;
1378         struct rtl8180_priv *priv = dev->priv;
1379 
1380         /* hw value */
1381         u32 ac_param;
1382 
1383         u8 aifs;
1384         u8 txop;
1385         u8 cw_min, cw_max;
1386 
1387         params = &priv->queue_param[queue];
1388 
1389         cw_min = fls(params->cw_min);
1390         cw_max = fls(params->cw_max);
1391 
1392         aifs = 10 + params->aifs * priv->slot_time;
1393 
1394         /* TODO: check if txop HW is in us (mult by 32) */
1395         txop = params->txop;
1396 
1397         ac_param = txop << AC_PARAM_TXOP_LIMIT_SHIFT |
1398                 cw_max << AC_PARAM_ECW_MAX_SHIFT |
1399                 cw_min << AC_PARAM_ECW_MIN_SHIFT |
1400                 aifs << AC_PARAM_AIFS_SHIFT;
1401 
1402         switch (queue) {
1403         case IEEE80211_AC_BK:
1404                 rtl818x_iowrite32(priv, &priv->map->AC_BK_PARAM, ac_param);
1405                 break;
1406         case IEEE80211_AC_BE:
1407                 rtl818x_iowrite32(priv, &priv->map->AC_BE_PARAM, ac_param);
1408                 break;
1409         case IEEE80211_AC_VI:
1410                 rtl818x_iowrite32(priv, &priv->map->AC_VI_PARAM, ac_param);
1411                 break;
1412         case IEEE80211_AC_VO:
1413                 rtl818x_iowrite32(priv, &priv->map->AC_VO_PARAM, ac_param);
1414                 break;
1415         }
1416 }
1417 
1418 static int rtl8180_conf_tx(struct ieee80211_hw *dev,
1419                             struct ieee80211_vif *vif, u16 queue,
1420                             const struct ieee80211_tx_queue_params *params)
1421 {
1422         struct rtl8180_priv *priv = dev->priv;
1423         u8 cw_min, cw_max;
1424 
1425         /* nothing to do ? */
1426         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
1427                 return 0;
1428 
1429         cw_min = fls(params->cw_min);
1430         cw_max = fls(params->cw_max);
1431 
1432         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
1433                 priv->queue_param[queue] = *params;
1434                 rtl8187se_conf_ac_parm(dev, queue);
1435         } else
1436                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1437                                  (cw_max << 4) | cw_min);
1438         return 0;
1439 }
1440 
1441 static void rtl8180_conf_erp(struct ieee80211_hw *dev,
1442                             struct ieee80211_bss_conf *info)
1443 {
1444         struct rtl8180_priv *priv = dev->priv;
1445         u8 sifs, difs;
1446         int eifs;
1447         u8 hw_eifs;
1448 
1449         /* TODO: should we do something ? */
1450         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
1451                 return;
1452 
1453         /* I _hope_ this means 10uS for the HW.
1454          * In reference code it is 0x22 for
1455          * both rtl8187L and rtl8187SE
1456          */
1457         sifs = 0x22;
1458 
1459         if (info->use_short_slot)
1460                 priv->slot_time = 9;
1461         else
1462                 priv->slot_time = 20;
1463 
1464         /* 10 is SIFS time in uS */
1465         difs = 10 + 2 * priv->slot_time;
1466         eifs = 10 + difs + priv->ack_time;
1467 
1468         /* HW should use 4uS units for EIFS (I'm sure for rtl8185)*/
1469         hw_eifs = DIV_ROUND_UP(eifs, 4);
1470 
1471 
1472         rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1473         rtl818x_iowrite8(priv, &priv->map->SIFS, sifs);
1474         rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1475 
1476         /* from reference code. set ack timeout reg = eifs reg */
1477         rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, hw_eifs);
1478 
1479         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
1480                 rtl818x_iowrite8(priv, &priv->map->EIFS_8187SE, hw_eifs);
1481         else if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
1482                 /* rtl8187/rtl8185 HW bug. After EIFS is elapsed,
1483                  * the HW still wait for DIFS.
1484                  * HW uses 4uS units for EIFS.
1485                  */
1486                 hw_eifs = DIV_ROUND_UP(eifs - difs, 4);
1487 
1488                 rtl818x_iowrite8(priv, &priv->map->EIFS, hw_eifs);
1489         }
1490 }
1491 
1492 static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
1493                                      struct ieee80211_vif *vif,
1494                                      struct ieee80211_bss_conf *info,
1495                                      u32 changed)
1496 {
1497         struct rtl8180_priv *priv = dev->priv;
1498         struct rtl8180_vif *vif_priv;
1499         int i;
1500         u8 reg;
1501 
1502         vif_priv = (struct rtl8180_vif *)&vif->drv_priv;
1503 
1504         if (changed & BSS_CHANGED_BSSID) {
1505                 rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->BSSID[0],
1506                                   le16_to_cpu(*(__le16 *)info->bssid));
1507                 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->BSSID[2],
1508                                   le32_to_cpu(*(__le32 *)(info->bssid + 2)));
1509 
1510                 if (is_valid_ether_addr(info->bssid)) {
1511                         if (vif->type == NL80211_IFTYPE_ADHOC)
1512                                 reg = RTL818X_MSR_ADHOC;
1513                         else
1514                                 reg = RTL818X_MSR_INFRA;
1515                 } else
1516                         reg = RTL818X_MSR_NO_LINK;
1517 
1518                 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
1519                         reg |= RTL818X_MSR_ENEDCA;
1520 
1521                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1522         }
1523 
1524         if (changed & BSS_CHANGED_BASIC_RATES)
1525                 rtl8180_conf_basic_rates(dev, info->basic_rates);
1526 
1527         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE)) {
1528 
1529                 /* when preamble changes, acktime duration changes, and erp must
1530                  * be recalculated. ACK time is calculated at lowest rate.
1531                  * Since mac80211 include SIFS time we remove it (-10)
1532                  */
1533                 priv->ack_time =
1534                         le16_to_cpu(ieee80211_generic_frame_duration(dev,
1535                                         priv->vif,
1536                                         NL80211_BAND_2GHZ, 10,
1537                                         &priv->rates[0])) - 10;
1538 
1539                 rtl8180_conf_erp(dev, info);
1540 
1541                 /* mac80211 supplies aifs_n to driver and calls
1542                  * conf_tx callback whether aifs_n changes, NOT
1543                  * when aifs changes.
1544                  * Aifs should be recalculated if slot changes.
1545                  */
1546                 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
1547                         for (i = 0; i < 4; i++)
1548                                 rtl8187se_conf_ac_parm(dev, i);
1549                 }
1550         }
1551 
1552         if (changed & BSS_CHANGED_BEACON_ENABLED)
1553                 vif_priv->enable_beacon = info->enable_beacon;
1554 
1555         if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) {
1556                 cancel_delayed_work_sync(&vif_priv->beacon_work);
1557                 if (vif_priv->enable_beacon)
1558                         schedule_work(&vif_priv->beacon_work.work);
1559         }
1560 }
1561 
1562 static u64 rtl8180_prepare_multicast(struct ieee80211_hw *dev,
1563                                      struct netdev_hw_addr_list *mc_list)
1564 {
1565         return netdev_hw_addr_list_count(mc_list);
1566 }
1567 
1568 static void rtl8180_configure_filter(struct ieee80211_hw *dev,
1569                                      unsigned int changed_flags,
1570                                      unsigned int *total_flags,
1571                                      u64 multicast)
1572 {
1573         struct rtl8180_priv *priv = dev->priv;
1574 
1575         if (changed_flags & FIF_FCSFAIL)
1576                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1577         if (changed_flags & FIF_CONTROL)
1578                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1579         if (changed_flags & FIF_OTHER_BSS)
1580                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1581         if (*total_flags & FIF_ALLMULTI || multicast > 0)
1582                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1583         else
1584                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1585 
1586         *total_flags = 0;
1587 
1588         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1589                 *total_flags |= FIF_FCSFAIL;
1590         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1591                 *total_flags |= FIF_CONTROL;
1592         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1593                 *total_flags |= FIF_OTHER_BSS;
1594         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1595                 *total_flags |= FIF_ALLMULTI;
1596 
1597         rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
1598 }
1599 
1600 static const struct ieee80211_ops rtl8180_ops = {
1601         .tx                     = rtl8180_tx,
1602         .start                  = rtl8180_start,
1603         .stop                   = rtl8180_stop,
1604         .add_interface          = rtl8180_add_interface,
1605         .remove_interface       = rtl8180_remove_interface,
1606         .config                 = rtl8180_config,
1607         .bss_info_changed       = rtl8180_bss_info_changed,
1608         .conf_tx                = rtl8180_conf_tx,
1609         .prepare_multicast      = rtl8180_prepare_multicast,
1610         .configure_filter       = rtl8180_configure_filter,
1611         .get_tsf                = rtl8180_get_tsf,
1612 };
1613 
1614 static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1615 {
1616         struct rtl8180_priv *priv = eeprom->data;
1617         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1618 
1619         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1620         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1621         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1622         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1623 }
1624 
1625 static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1626 {
1627         struct rtl8180_priv *priv = eeprom->data;
1628         u8 reg = 2 << 6;
1629 
1630         if (eeprom->reg_data_in)
1631                 reg |= RTL818X_EEPROM_CMD_WRITE;
1632         if (eeprom->reg_data_out)
1633                 reg |= RTL818X_EEPROM_CMD_READ;
1634         if (eeprom->reg_data_clock)
1635                 reg |= RTL818X_EEPROM_CMD_CK;
1636         if (eeprom->reg_chip_select)
1637                 reg |= RTL818X_EEPROM_CMD_CS;
1638 
1639         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1640         rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1641         udelay(10);
1642 }
1643 
1644 static void rtl8180_eeprom_read(struct rtl8180_priv *priv)
1645 {
1646         struct eeprom_93cx6 eeprom;
1647         int eeprom_cck_table_adr;
1648         u16 eeprom_val;
1649         int i;
1650 
1651         eeprom.data = priv;
1652         eeprom.register_read = rtl8180_eeprom_register_read;
1653         eeprom.register_write = rtl8180_eeprom_register_write;
1654         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1655                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1656         else
1657                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1658 
1659         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
1660                         RTL818X_EEPROM_CMD_PROGRAM);
1661         rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1662         udelay(10);
1663 
1664         eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val);
1665         eeprom_val &= 0xFF;
1666         priv->rf_type = eeprom_val;
1667 
1668         eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val);
1669         priv->csthreshold = eeprom_val >> 8;
1670 
1671         eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)priv->mac_addr, 3);
1672 
1673         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
1674                 eeprom_cck_table_adr = 0x30;
1675         else
1676                 eeprom_cck_table_adr = 0x10;
1677 
1678         /* CCK TX power */
1679         for (i = 0; i < 14; i += 2) {
1680                 u16 txpwr;
1681                 eeprom_93cx6_read(&eeprom, eeprom_cck_table_adr + (i >> 1),
1682                                 &txpwr);
1683                 priv->channels[i].hw_value = txpwr & 0xFF;
1684                 priv->channels[i + 1].hw_value = txpwr >> 8;
1685         }
1686 
1687         /* OFDM TX power */
1688         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
1689                 for (i = 0; i < 14; i += 2) {
1690                         u16 txpwr;
1691                         eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr);
1692                         priv->channels[i].hw_value |= (txpwr & 0xFF) << 8;
1693                         priv->channels[i + 1].hw_value |= txpwr & 0xFF00;
1694                 }
1695         }
1696 
1697         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180) {
1698                 __le32 anaparam;
1699                 eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2);
1700                 priv->anaparam = le32_to_cpu(anaparam);
1701                 eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam);
1702         }
1703 
1704         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
1705                 eeprom_93cx6_read(&eeprom, 0x3F, &eeprom_val);
1706                 priv->antenna_diversity_en = !!(eeprom_val & 0x100);
1707                 priv->antenna_diversity_default = (eeprom_val & 0xC00) == 0x400;
1708 
1709                 eeprom_93cx6_read(&eeprom, 0x7C, &eeprom_val);
1710                 priv->xtal_out = eeprom_val & 0xF;
1711                 priv->xtal_in = (eeprom_val & 0xF0) >> 4;
1712                 priv->xtal_cal = !!(eeprom_val & 0x1000);
1713                 priv->thermal_meter_val = (eeprom_val & 0xF00) >> 8;
1714                 priv->thermal_meter_en = !!(eeprom_val & 0x2000);
1715         }
1716 
1717         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
1718                         RTL818X_EEPROM_CMD_NORMAL);
1719 }
1720 
1721 static int rtl8180_probe(struct pci_dev *pdev,
1722                                    const struct pci_device_id *id)
1723 {
1724         struct ieee80211_hw *dev;
1725         struct rtl8180_priv *priv;
1726         unsigned long mem_len;
1727         unsigned int io_len;
1728         int err;
1729         const char *chip_name, *rf_name = NULL;
1730         u32 reg;
1731 
1732         err = pci_enable_device(pdev);
1733         if (err) {
1734                 printk(KERN_ERR "%s (rtl8180): Cannot enable new PCI device\n",
1735                        pci_name(pdev));
1736                 return err;
1737         }
1738 
1739         err = pci_request_regions(pdev, KBUILD_MODNAME);
1740         if (err) {
1741                 printk(KERN_ERR "%s (rtl8180): Cannot obtain PCI resources\n",
1742                        pci_name(pdev));
1743                 goto err_disable_dev;
1744         }
1745 
1746         io_len = pci_resource_len(pdev, 0);
1747         mem_len = pci_resource_len(pdev, 1);
1748 
1749         if (mem_len < sizeof(struct rtl818x_csr) ||
1750             io_len < sizeof(struct rtl818x_csr)) {
1751                 printk(KERN_ERR "%s (rtl8180): Too short PCI resources\n",
1752                        pci_name(pdev));
1753                 err = -ENOMEM;
1754                 goto err_free_reg;
1755         }
1756 
1757         if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) ||
1758             (err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))) {
1759                 printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n",
1760                        pci_name(pdev));
1761                 goto err_free_reg;
1762         }
1763 
1764         pci_set_master(pdev);
1765 
1766         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8180_ops);
1767         if (!dev) {
1768                 printk(KERN_ERR "%s (rtl8180): ieee80211 alloc failed\n",
1769                        pci_name(pdev));
1770                 err = -ENOMEM;
1771                 goto err_free_reg;
1772         }
1773 
1774         priv = dev->priv;
1775         priv->pdev = pdev;
1776 
1777         dev->max_rates = 1;
1778         SET_IEEE80211_DEV(dev, &pdev->dev);
1779         pci_set_drvdata(pdev, dev);
1780 
1781         priv->map_pio = false;
1782         priv->map = pci_iomap(pdev, 1, mem_len);
1783         if (!priv->map) {
1784                 priv->map = pci_iomap(pdev, 0, io_len);
1785                 priv->map_pio = true;
1786         }
1787 
1788         if (!priv->map) {
1789                 dev_err(&pdev->dev, "Cannot map device memory/PIO\n");
1790                 err = -ENOMEM;
1791                 goto err_free_dev;
1792         }
1793 
1794         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1795         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1796 
1797         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1798         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1799 
1800         priv->band.band = NL80211_BAND_2GHZ;
1801         priv->band.channels = priv->channels;
1802         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1803         priv->band.bitrates = priv->rates;
1804         priv->band.n_bitrates = 4;
1805         dev->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
1806 
1807         ieee80211_hw_set(dev, HOST_BROADCAST_PS_BUFFERING);
1808         ieee80211_hw_set(dev, RX_INCLUDES_FCS);
1809 
1810         dev->vif_data_size = sizeof(struct rtl8180_vif);
1811         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1812                                         BIT(NL80211_IFTYPE_ADHOC);
1813         dev->max_signal = 65;
1814 
1815         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1816         reg &= RTL818X_TX_CONF_HWVER_MASK;
1817         switch (reg) {
1818         case RTL818X_TX_CONF_R8180_ABCD:
1819                 chip_name = "RTL8180";
1820                 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8180;
1821                 break;
1822 
1823         case RTL818X_TX_CONF_R8180_F:
1824                 chip_name = "RTL8180vF";
1825                 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8180;
1826                 break;
1827 
1828         case RTL818X_TX_CONF_R8185_ABC:
1829                 chip_name = "RTL8185";
1830                 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8185;
1831                 break;
1832 
1833         case RTL818X_TX_CONF_R8185_D:
1834                 chip_name = "RTL8185vD";
1835                 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8185;
1836                 break;
1837 
1838         case RTL818X_TX_CONF_RTL8187SE:
1839                 chip_name = "RTL8187SE";
1840                 if (priv->map_pio) {
1841                         dev_err(&pdev->dev,
1842                                 "MMIO failed. PIO not supported on RTL8187SE\n");
1843                         err = -ENOMEM;
1844                         goto err_iounmap;
1845                 }
1846                 priv->chip_family = RTL818X_CHIP_FAMILY_RTL8187SE;
1847                 break;
1848 
1849         default:
1850                 printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
1851                        pci_name(pdev), reg >> 25);
1852                 err = -ENODEV;
1853                 goto err_iounmap;
1854         }
1855 
1856         /* we declare to MAC80211 all the queues except for beacon queue
1857          * that will be eventually handled by DRV.
1858          * TX rings are arranged in such a way that lower is the IDX,
1859          * higher is the priority, in order to achieve direct mapping
1860          * with mac80211, however the beacon queue is an exception and it
1861          * is mapped on the highst tx ring IDX.
1862          */
1863         if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
1864                 dev->queues = RTL8187SE_NR_TX_QUEUES - 1;
1865         else
1866                 dev->queues = RTL8180_NR_TX_QUEUES - 1;
1867 
1868         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
1869                 priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1870                 pci_try_set_mwi(pdev);
1871         }
1872 
1873         if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180)
1874                 ieee80211_hw_set(dev, SIGNAL_DBM);
1875         else
1876                 ieee80211_hw_set(dev, SIGNAL_UNSPEC);
1877 
1878         wiphy_ext_feature_set(dev->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1879 
1880         rtl8180_eeprom_read(priv);
1881 
1882         switch (priv->rf_type) {
1883         case 1: rf_name = "Intersil";
1884                 break;
1885         case 2: rf_name = "RFMD";
1886                 break;
1887         case 3: priv->rf = &sa2400_rf_ops;
1888                 break;
1889         case 4: priv->rf = &max2820_rf_ops;
1890                 break;
1891         case 5: priv->rf = &grf5101_rf_ops;
1892                 break;
1893         case 9:
1894                 if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
1895                         priv->rf = rtl8187se_detect_rf(dev);
1896                 else
1897                         priv->rf = rtl8180_detect_rf(dev);
1898                 break;
1899         case 10:
1900                 rf_name = "RTL8255";
1901                 break;
1902         default:
1903                 printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
1904                        pci_name(pdev), priv->rf_type);
1905                 err = -ENODEV;
1906                 goto err_iounmap;
1907         }
1908 
1909         if (!priv->rf) {
1910                 printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
1911                        pci_name(pdev), rf_name);
1912                 err = -ENODEV;
1913                 goto err_iounmap;
1914         }
1915 
1916         if (!is_valid_ether_addr(priv->mac_addr)) {
1917                 printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using"
1918                        " randomly generated MAC addr\n", pci_name(pdev));
1919                 eth_random_addr(priv->mac_addr);
1920         }
1921         SET_IEEE80211_PERM_ADDR(dev, priv->mac_addr);
1922 
1923         spin_lock_init(&priv->lock);
1924 
1925         err = ieee80211_register_hw(dev);
1926         if (err) {
1927                 printk(KERN_ERR "%s (rtl8180): Cannot register device\n",
1928                        pci_name(pdev));
1929                 goto err_iounmap;
1930         }
1931 
1932         wiphy_info(dev->wiphy, "hwaddr %pm, %s + %s\n",
1933                    priv->mac_addr, chip_name, priv->rf->name);
1934 
1935         return 0;
1936 
1937  err_iounmap:
1938         pci_iounmap(pdev, priv->map);
1939 
1940  err_free_dev:
1941         ieee80211_free_hw(dev);
1942 
1943  err_free_reg:
1944         pci_release_regions(pdev);
1945 
1946  err_disable_dev:
1947         pci_disable_device(pdev);
1948         return err;
1949 }
1950 
1951 static void rtl8180_remove(struct pci_dev *pdev)
1952 {
1953         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1954         struct rtl8180_priv *priv;
1955 
1956         if (!dev)
1957                 return;
1958 
1959         ieee80211_unregister_hw(dev);
1960 
1961         priv = dev->priv;
1962 
1963         pci_iounmap(pdev, priv->map);
1964         pci_release_regions(pdev);
1965         pci_disable_device(pdev);
1966         ieee80211_free_hw(dev);
1967 }
1968 
1969 #ifdef CONFIG_PM
1970 static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state)
1971 {
1972         pci_save_state(pdev);
1973         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1974         return 0;
1975 }
1976 
1977 static int rtl8180_resume(struct pci_dev *pdev)
1978 {
1979         pci_set_power_state(pdev, PCI_D0);
1980         pci_restore_state(pdev);
1981         return 0;
1982 }
1983 
1984 #endif /* CONFIG_PM */
1985 
1986 static struct pci_driver rtl8180_driver = {
1987         .name           = KBUILD_MODNAME,
1988         .id_table       = rtl8180_table,
1989         .probe          = rtl8180_probe,
1990         .remove         = rtl8180_remove,
1991 #ifdef CONFIG_PM
1992         .suspend        = rtl8180_suspend,
1993         .resume         = rtl8180_resume,
1994 #endif /* CONFIG_PM */
1995 };
1996 
1997 module_pci_driver(rtl8180_driver);

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