drivers/net/wireless/rt2x00/rt2800pci.c

   1 /*
   2         Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
   3         Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
   4         Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
   5         Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
   6         Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
   7         Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com>
   8         Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
   9         Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com>
  10         <http://rt2x00.serialmonkey.com>
  11
  12         This program is free software; you can redistribute it and/or modify
  13         it under the terms of the GNU General Public License as published by
  14         the Free Software Foundation; either version 2 of the License, or
  15         (at your option) any later version.
  16
  17         This program is distributed in the hope that it will be useful,
  18         but WITHOUT ANY WARRANTY; without even the implied warranty of
  19         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  20         GNU General Public License for more details.
  21
  22         You should have received a copy of the GNU General Public License
  23         along with this program; if not, write to the
  24         Free Software Foundation, Inc.,
  25         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26  */
  27
  28 /*
  29         Module: rt2800pci
  30         Abstract: rt2800pci device specific routines.
  31         Supported chipsets: RT2800E & RT2800ED.
  32  */
  33
  34 #include <linux/delay.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/init.h>
  37 #include <linux/kernel.h>
  38 #include <linux/module.h>
  39 #include <linux/pci.h>
  40 #include <linux/platform_device.h>
  41 #include <linux/eeprom_93cx6.h>
  42
  43 #include "rt2x00.h"
  44 #include "rt2x00mmio.h"
  45 #include "rt2x00pci.h"
  46 #include "rt2x00soc.h"
  47 #include "rt2800lib.h"
  48 #include "rt2800.h"
  49 #include "rt2800pci.h"
  50
  51 /*
  52  * Allow hardware encryption to be disabled.
  53  */
  54 static bool modparam_nohwcrypt = false;
  55 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  56 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  57
  58 static bool rt2800pci_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
  59 {
  60         return modparam_nohwcrypt;
  61 }
  62
  63 static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
  64 {
  65         unsigned int i;
  66         u32 reg;
  67
  68         /*
  69          * SOC devices don't support MCU requests.
  70          */
  71         if (rt2x00_is_soc(rt2x00dev))
  72                 return;
  73
  74         for (i = 0; i < 200; i++) {
  75                 rt2x00mmio_register_read(rt2x00dev, H2M_MAILBOX_CID, &reg);
  76
  77                 if ((rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD0) == token) ||
  78                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD1) == token) ||
  79                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD2) == token) ||
  80                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD3) == token))
  81                         break;
  82
  83                 udelay(REGISTER_BUSY_DELAY);
  84         }
  85
  86         if (i == 200)
  87                 ERROR(rt2x00dev, "MCU request failed, no response from hardware\n");
  88
  89         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
  90         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
  91 }
  92
  93 #if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
  94 static int rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
  95 {
  96         void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE);
  97
  98         if (!base_addr)
  99                 return -ENOMEM;
 100
 101         memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE);
 102
 103         iounmap(base_addr);
 104         return 0;
 105 }
 106 #else
 107 static inline int rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
 108 {
 109         return -ENOMEM;
 110 }
 111 #endif /* CONFIG_SOC_RT288X || CONFIG_SOC_RT305X */
 112
 113 #ifdef CONFIG_PCI
 114 static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
 115 {
 116         struct rt2x00_dev *rt2x00dev = eeprom->data;
 117         u32 reg;
 118
 119         rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR, &reg);
 120
 121         eeprom->reg_data_in = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_IN);
 122         eeprom->reg_data_out = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_OUT);
 123         eeprom->reg_data_clock =
 124             !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_CLOCK);
 125         eeprom->reg_chip_select =
 126             !!rt2x00_get_field32(reg, E2PROM_CSR_CHIP_SELECT);
 127 }
 128
 129 static void rt2800pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
 130 {
 131         struct rt2x00_dev *rt2x00dev = eeprom->data;
 132         u32 reg = 0;
 133
 134         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_IN, !!eeprom->reg_data_in);
 135         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_OUT, !!eeprom->reg_data_out);
 136         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_CLOCK,
 137                            !!eeprom->reg_data_clock);
 138         rt2x00_set_field32(&reg, E2PROM_CSR_CHIP_SELECT,
 139                            !!eeprom->reg_chip_select);
 140
 141         rt2x00mmio_register_write(rt2x00dev, E2PROM_CSR, reg);
 142 }
 143
 144 static int rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
 145 {
 146         struct eeprom_93cx6 eeprom;
 147         u32 reg;
 148
 149         rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR, &reg);
 150
 151         eeprom.data = rt2x00dev;
 152         eeprom.register_read = rt2800pci_eepromregister_read;
 153         eeprom.register_write = rt2800pci_eepromregister_write;
 154         switch (rt2x00_get_field32(reg, E2PROM_CSR_TYPE))
 155         {
 156         case 0:
 157                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 158                 break;
 159         case 1:
 160                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 161                 break;
 162         default:
 163                 eeprom.width = PCI_EEPROM_WIDTH_93C86;
 164                 break;
 165         }
 166         eeprom.reg_data_in = 0;
 167         eeprom.reg_data_out = 0;
 168         eeprom.reg_data_clock = 0;
 169         eeprom.reg_chip_select = 0;
 170
 171         eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
 172                                EEPROM_SIZE / sizeof(u16));
 173
 174         return 0;
 175 }
 176
 177 static int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
 178 {
 179         return rt2800_efuse_detect(rt2x00dev);
 180 }
 181
 182 static inline int rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
 183 {
 184         return rt2800_read_eeprom_efuse(rt2x00dev);
 185 }
 186 #else
 187 static inline int rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
 188 {
 189         return -EOPNOTSUPP;
 190 }
 191
 192 static inline int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
 193 {
 194         return 0;
 195 }
 196
 197 static inline int rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
 198 {
 199         return -EOPNOTSUPP;
 200 }
 201 #endif /* CONFIG_PCI */
 202
 203 /*
 204  * Queue handlers.
 205  */
 206 static void rt2800pci_start_queue(struct data_queue *queue)
 207 {
 208         struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
 209         u32 reg;
 210
 211         switch (queue->qid) {
 212         case QID_RX:
 213                 rt2x00mmio_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
 214                 rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 1);
 215                 rt2x00mmio_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
 216                 break;
 217         case QID_BEACON:
 218                 rt2x00mmio_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
 219                 rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 1);
 220                 rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 1);
 221                 rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 1);
 222                 rt2x00mmio_register_write(rt2x00dev, BCN_TIME_CFG, reg);
 223
 224                 rt2x00mmio_register_read(rt2x00dev, INT_TIMER_EN, &reg);
 225                 rt2x00_set_field32(&reg, INT_TIMER_EN_PRE_TBTT_TIMER, 1);
 226                 rt2x00mmio_register_write(rt2x00dev, INT_TIMER_EN, reg);
 227                 break;
 228         default:
 229                 break;
 230         }
 231 }
 232
 233 static void rt2800pci_kick_queue(struct data_queue *queue)
 234 {
 235         struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
 236         struct queue_entry *entry;
 237
 238         switch (queue->qid) {
 239         case QID_AC_VO:
 240         case QID_AC_VI:
 241         case QID_AC_BE:
 242         case QID_AC_BK:
 243                 entry = rt2x00queue_get_entry(queue, Q_INDEX);
 244                 rt2x00mmio_register_write(rt2x00dev, TX_CTX_IDX(queue->qid),
 245                                           entry->entry_idx);
 246                 break;
 247         case QID_MGMT:
 248                 entry = rt2x00queue_get_entry(queue, Q_INDEX);
 249                 rt2x00mmio_register_write(rt2x00dev, TX_CTX_IDX(5),
 250                                           entry->entry_idx);
 251                 break;
 252         default:
 253                 break;
 254         }
 255 }
 256
 257 static void rt2800pci_stop_queue(struct data_queue *queue)
 258 {
 259         struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
 260         u32 reg;
 261
 262         switch (queue->qid) {
 263         case QID_RX:
 264                 rt2x00mmio_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
 265                 rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 0);
 266                 rt2x00mmio_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
 267                 break;
 268         case QID_BEACON:
 269                 rt2x00mmio_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
 270                 rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 0);
 271                 rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 0);
 272                 rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 0);
 273                 rt2x00mmio_register_write(rt2x00dev, BCN_TIME_CFG, reg);
 274
 275                 rt2x00mmio_register_read(rt2x00dev, INT_TIMER_EN, &reg);
 276                 rt2x00_set_field32(&reg, INT_TIMER_EN_PRE_TBTT_TIMER, 0);
 277                 rt2x00mmio_register_write(rt2x00dev, INT_TIMER_EN, reg);
 278
 279                 /*
 280                  * Wait for current invocation to finish. The tasklet
 281                  * won't be scheduled anymore afterwards since we disabled
 282                  * the TBTT and PRE TBTT timer.
 283                  */
 284                 tasklet_kill(&rt2x00dev->tbtt_tasklet);
 285                 tasklet_kill(&rt2x00dev->pretbtt_tasklet);
 286
 287                 break;
 288         default:
 289                 break;
 290         }
 291 }
 292
 293 /*
 294  * Firmware functions
 295  */
 296 static char *rt2800pci_get_firmware_name(struct rt2x00_dev *rt2x00dev)
 297 {
 298         /*
 299          * Chip rt3290 use specific 4KB firmware named rt3290.bin.
 300          */
 301         if (rt2x00_rt(rt2x00dev, RT3290))
 302                 return FIRMWARE_RT3290;
 303         else
 304                 return FIRMWARE_RT2860;
 305 }
 306
 307 static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
 308                                     const u8 *data, const size_t len)
 309 {
 310         u32 reg;
 311
 312         /*
 313          * enable Host program ram write selection
 314          */
 315         reg = 0;
 316         rt2x00_set_field32(&reg, PBF_SYS_CTRL_HOST_RAM_WRITE, 1);
 317         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, reg);
 318
 319         /*
 320          * Write firmware to device.
 321          */
 322         rt2x00mmio_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
 323                                        data, len);
 324
 325         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000);
 326         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001);
 327
 328         rt2x00mmio_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
 329         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
 330
 331         return 0;
 332 }
 333
 334 /*
 335  * Initialization functions.
 336  */
 337 static bool rt2800pci_get_entry_state(struct queue_entry *entry)
 338 {
 339         struct queue_entry_priv_mmio *entry_priv = entry->priv_data;
 340         u32 word;
 341
 342         if (entry->queue->qid == QID_RX) {
 343                 rt2x00_desc_read(entry_priv->desc, 1, &word);
 344
 345                 return (!rt2x00_get_field32(word, RXD_W1_DMA_DONE));
 346         } else {
 347                 rt2x00_desc_read(entry_priv->desc, 1, &word);
 348
 349                 return (!rt2x00_get_field32(word, TXD_W1_DMA_DONE));
 350         }
 351 }
 352
 353 static void rt2800pci_clear_entry(struct queue_entry *entry)
 354 {
 355         struct queue_entry_priv_mmio *entry_priv = entry->priv_data;
 356         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
 357         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
 358         u32 word;
 359
 360         if (entry->queue->qid == QID_RX) {
 361                 rt2x00_desc_read(entry_priv->desc, 0, &word);
 362                 rt2x00_set_field32(&word, RXD_W0_SDP0, skbdesc->skb_dma);
 363                 rt2x00_desc_write(entry_priv->desc, 0, word);
 364
 365                 rt2x00_desc_read(entry_priv->desc, 1, &word);
 366                 rt2x00_set_field32(&word, RXD_W1_DMA_DONE, 0);
 367                 rt2x00_desc_write(entry_priv->desc, 1, word);
 368
 369                 /*
 370                  * Set RX IDX in register to inform hardware that we have
 371                  * handled this entry and it is available for reuse again.
 372                  */
 373                 rt2x00mmio_register_write(rt2x00dev, RX_CRX_IDX,
 374                                           entry->entry_idx);
 375         } else {
 376                 rt2x00_desc_read(entry_priv->desc, 1, &word);
 377                 rt2x00_set_field32(&word, TXD_W1_DMA_DONE, 1);
 378                 rt2x00_desc_write(entry_priv->desc, 1, word);
 379         }
 380 }
 381
 382 static int rt2800pci_init_queues(struct rt2x00_dev *rt2x00dev)
 383 {
 384         struct queue_entry_priv_mmio *entry_priv;
 385
 386         /*
 387          * Initialize registers.
 388          */
 389         entry_priv = rt2x00dev->tx[0].entries[0].priv_data;
 390         rt2x00mmio_register_write(rt2x00dev, TX_BASE_PTR0,
 391                                   entry_priv->desc_dma);
 392         rt2x00mmio_register_write(rt2x00dev, TX_MAX_CNT0,
 393                                   rt2x00dev->tx[0].limit);
 394         rt2x00mmio_register_write(rt2x00dev, TX_CTX_IDX0, 0);
 395         rt2x00mmio_register_write(rt2x00dev, TX_DTX_IDX0, 0);
 396
 397         entry_priv = rt2x00dev->tx[1].entries[0].priv_data;
 398         rt2x00mmio_register_write(rt2x00dev, TX_BASE_PTR1,
 399                                   entry_priv->desc_dma);
 400         rt2x00mmio_register_write(rt2x00dev, TX_MAX_CNT1,
 401                                   rt2x00dev->tx[1].limit);
 402         rt2x00mmio_register_write(rt2x00dev, TX_CTX_IDX1, 0);
 403         rt2x00mmio_register_write(rt2x00dev, TX_DTX_IDX1, 0);
 404
 405         entry_priv = rt2x00dev->tx[2].entries[0].priv_data;
 406         rt2x00mmio_register_write(rt2x00dev, TX_BASE_PTR2,
 407                                   entry_priv->desc_dma);
 408         rt2x00mmio_register_write(rt2x00dev, TX_MAX_CNT2,
 409                                   rt2x00dev->tx[2].limit);
 410         rt2x00mmio_register_write(rt2x00dev, TX_CTX_IDX2, 0);
 411         rt2x00mmio_register_write(rt2x00dev, TX_DTX_IDX2, 0);
 412
 413         entry_priv = rt2x00dev->tx[3].entries[0].priv_data;
 414         rt2x00mmio_register_write(rt2x00dev, TX_BASE_PTR3,
 415                                   entry_priv->desc_dma);
 416         rt2x00mmio_register_write(rt2x00dev, TX_MAX_CNT3,
 417                                   rt2x00dev->tx[3].limit);
 418         rt2x00mmio_register_write(rt2x00dev, TX_CTX_IDX3, 0);
 419         rt2x00mmio_register_write(rt2x00dev, TX_DTX_IDX3, 0);
 420
 421         rt2x00mmio_register_write(rt2x00dev, TX_BASE_PTR4, 0);
 422         rt2x00mmio_register_write(rt2x00dev, TX_MAX_CNT4, 0);
 423         rt2x00mmio_register_write(rt2x00dev, TX_CTX_IDX4, 0);
 424         rt2x00mmio_register_write(rt2x00dev, TX_DTX_IDX4, 0);
 425
 426         rt2x00mmio_register_write(rt2x00dev, TX_BASE_PTR5, 0);
 427         rt2x00mmio_register_write(rt2x00dev, TX_MAX_CNT5, 0);
 428         rt2x00mmio_register_write(rt2x00dev, TX_CTX_IDX5, 0);
 429         rt2x00mmio_register_write(rt2x00dev, TX_DTX_IDX5, 0);
 430
 431         entry_priv = rt2x00dev->rx->entries[0].priv_data;
 432         rt2x00mmio_register_write(rt2x00dev, RX_BASE_PTR,
 433                                   entry_priv->desc_dma);
 434         rt2x00mmio_register_write(rt2x00dev, RX_MAX_CNT,
 435                                   rt2x00dev->rx[0].limit);
 436         rt2x00mmio_register_write(rt2x00dev, RX_CRX_IDX,
 437                                   rt2x00dev->rx[0].limit - 1);
 438         rt2x00mmio_register_write(rt2x00dev, RX_DRX_IDX, 0);
 439
 440         rt2800_disable_wpdma(rt2x00dev);
 441
 442         rt2x00mmio_register_write(rt2x00dev, DELAY_INT_CFG, 0);
 443
 444         return 0;
 445 }
 446
 447 /*
 448  * Device state switch handlers.
 449  */
 450 static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
 451                                  enum dev_state state)
 452 {
 453         u32 reg;
 454         unsigned long flags;
 455
 456         /*
 457          * When interrupts are being enabled, the interrupt registers
 458          * should clear the register to assure a clean state.
 459          */
 460         if (state == STATE_RADIO_IRQ_ON) {
 461                 rt2x00mmio_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
 462                 rt2x00mmio_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
 463         }
 464
 465         spin_lock_irqsave(&rt2x00dev->irqmask_lock, flags);
 466         reg = 0;
 467         if (state == STATE_RADIO_IRQ_ON) {
 468                 rt2x00_set_field32(&reg, INT_MASK_CSR_RX_DONE, 1);
 469                 rt2x00_set_field32(&reg, INT_MASK_CSR_TBTT, 1);
 470                 rt2x00_set_field32(&reg, INT_MASK_CSR_PRE_TBTT, 1);
 471                 rt2x00_set_field32(&reg, INT_MASK_CSR_TX_FIFO_STATUS, 1);
 472                 rt2x00_set_field32(&reg, INT_MASK_CSR_AUTO_WAKEUP, 1);
 473         }
 474         rt2x00mmio_register_write(rt2x00dev, INT_MASK_CSR, reg);
 475         spin_unlock_irqrestore(&rt2x00dev->irqmask_lock, flags);
 476
 477         if (state == STATE_RADIO_IRQ_OFF) {
 478                 /*
 479                  * Wait for possibly running tasklets to finish.
 480                  */
 481                 tasklet_kill(&rt2x00dev->txstatus_tasklet);
 482                 tasklet_kill(&rt2x00dev->rxdone_tasklet);
 483                 tasklet_kill(&rt2x00dev->autowake_tasklet);
 484                 tasklet_kill(&rt2x00dev->tbtt_tasklet);
 485                 tasklet_kill(&rt2x00dev->pretbtt_tasklet);
 486         }
 487 }
 488
 489 static int rt2800pci_init_registers(struct rt2x00_dev *rt2x00dev)
 490 {
 491         u32 reg;
 492
 493         /*
 494          * Reset DMA indexes
 495          */
 496         rt2x00mmio_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
 497         rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, 1);
 498         rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, 1);
 499         rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, 1);
 500         rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, 1);
 501         rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX4, 1);
 502         rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX5, 1);
 503         rt2x00_set_field32(&reg, WPDMA_RST_IDX_DRX_IDX0, 1);
 504         rt2x00mmio_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
 505
 506         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
 507         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
 508
 509         if (rt2x00_is_pcie(rt2x00dev) &&
 510             (rt2x00_rt(rt2x00dev, RT3572) ||
 511              rt2x00_rt(rt2x00dev, RT5390) ||
 512              rt2x00_rt(rt2x00dev, RT5392))) {
 513                 rt2x00mmio_register_read(rt2x00dev, AUX_CTRL, &reg);
 514                 rt2x00_set_field32(&reg, AUX_CTRL_FORCE_PCIE_CLK, 1);
 515                 rt2x00_set_field32(&reg, AUX_CTRL_WAKE_PCIE_EN, 1);
 516                 rt2x00mmio_register_write(rt2x00dev, AUX_CTRL, reg);
 517         }
 518
 519         rt2x00mmio_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000003);
 520
 521         reg = 0;
 522         rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_CSR, 1);
 523         rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_BBP, 1);
 524         rt2x00mmio_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
 525
 526         rt2x00mmio_register_write(rt2x00dev, MAC_SYS_CTRL, 0x00000000);
 527
 528         return 0;
 529 }
 530
 531 static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 532 {
 533         int retval;
 534
 535         /* Wait for DMA, ignore error until we initialize queues. */
 536         rt2800_wait_wpdma_ready(rt2x00dev);
 537
 538         if (unlikely(rt2800pci_init_queues(rt2x00dev)))
 539                 return -EIO;
 540
 541         retval = rt2800_enable_radio(rt2x00dev);
 542         if (retval)
 543                 return retval;
 544
 545         /* After resume MCU_BOOT_SIGNAL will trash these. */
 546         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
 547         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
 548
 549         rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_RADIO_OFF, 0xff, 0x02);
 550         rt2800pci_mcu_status(rt2x00dev, TOKEN_RADIO_OFF);
 551
 552         rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP, 0, 0);
 553         rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
 554
 555         return retval;
 556 }
 557
 558 static void rt2800pci_disable_radio(struct rt2x00_dev *rt2x00dev)
 559 {
 560         if (rt2x00_is_soc(rt2x00dev)) {
 561                 rt2800_disable_radio(rt2x00dev);
 562                 rt2x00mmio_register_write(rt2x00dev, PWR_PIN_CFG, 0);
 563                 rt2x00mmio_register_write(rt2x00dev, TX_PIN_CFG, 0);
 564         }
 565 }
 566
 567 static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
 568                                enum dev_state state)
 569 {
 570         if (state == STATE_AWAKE) {
 571                 rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP,
 572                                    0, 0x02);
 573                 rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
 574         } else if (state == STATE_SLEEP) {
 575                 rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS,
 576                                           0xffffffff);
 577                 rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID,
 578                                           0xffffffff);
 579                 rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_SLEEP,
 580                                    0xff, 0x01);
 581         }
 582
 583         return 0;
 584 }
 585
 586 static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 587                                       enum dev_state state)
 588 {
 589         int retval = 0;
 590
 591         switch (state) {
 592         case STATE_RADIO_ON:
 593                 retval = rt2800pci_enable_radio(rt2x00dev);
 594                 break;
 595         case STATE_RADIO_OFF:
 596                 /*
 597                  * After the radio has been disabled, the device should
 598                  * be put to sleep for powersaving.
 599                  */
 600                 rt2800pci_disable_radio(rt2x00dev);
 601                 rt2800pci_set_state(rt2x00dev, STATE_SLEEP);
 602                 break;
 603         case STATE_RADIO_IRQ_ON:
 604         case STATE_RADIO_IRQ_OFF:
 605                 rt2800pci_toggle_irq(rt2x00dev, state);
 606                 break;
 607         case STATE_DEEP_SLEEP:
 608         case STATE_SLEEP:
 609         case STATE_STANDBY:
 610         case STATE_AWAKE:
 611                 retval = rt2800pci_set_state(rt2x00dev, state);
 612                 break;
 613         default:
 614                 retval = -ENOTSUPP;
 615                 break;
 616         }
 617
 618         if (unlikely(retval))
 619                 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
 620                       state, retval);
 621
 622         return retval;
 623 }
 624
 625 /*
 626  * TX descriptor initialization
 627  */
 628 static __le32 *rt2800pci_get_txwi(struct queue_entry *entry)
 629 {
 630         return (__le32 *) entry->skb->data;
 631 }
 632
 633 static void rt2800pci_write_tx_desc(struct queue_entry *entry,
 634                                     struct txentry_desc *txdesc)
 635 {
 636         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
 637         struct queue_entry_priv_mmio *entry_priv = entry->priv_data;
 638         __le32 *txd = entry_priv->desc;
 639         u32 word;
 640
 641         /*
 642          * The buffers pointed by SD_PTR0/SD_LEN0 and SD_PTR1/SD_LEN1
 643          * must contains a TXWI structure + 802.11 header + padding + 802.11
 644          * data. We choose to have SD_PTR0/SD_LEN0 only contains TXWI and
 645          * SD_PTR1/SD_LEN1 contains 802.11 header + padding + 802.11
 646          * data. It means that LAST_SEC0 is always 0.
 647          */
 648
 649         /*
 650          * Initialize TX descriptor
 651          */
 652         word = 0;
 653         rt2x00_set_field32(&word, TXD_W0_SD_PTR0, skbdesc->skb_dma);
 654         rt2x00_desc_write(txd, 0, word);
 655
 656         word = 0;
 657         rt2x00_set_field32(&word, TXD_W1_SD_LEN1, entry->skb->len);
 658         rt2x00_set_field32(&word, TXD_W1_LAST_SEC1,
 659                            !test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
 660         rt2x00_set_field32(&word, TXD_W1_BURST,
 661                            test_bit(ENTRY_TXD_BURST, &txdesc->flags));
 662         rt2x00_set_field32(&word, TXD_W1_SD_LEN0, TXWI_DESC_SIZE);
 663         rt2x00_set_field32(&word, TXD_W1_LAST_SEC0, 0);
 664         rt2x00_set_field32(&word, TXD_W1_DMA_DONE, 0);
 665         rt2x00_desc_write(txd, 1, word);
 666
 667         word = 0;
 668         rt2x00_set_field32(&word, TXD_W2_SD_PTR1,
 669                            skbdesc->skb_dma + TXWI_DESC_SIZE);
 670         rt2x00_desc_write(txd, 2, word);
 671
 672         word = 0;
 673         rt2x00_set_field32(&word, TXD_W3_WIV,
 674                            !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags));
 675         rt2x00_set_field32(&word, TXD_W3_QSEL, 2);
 676         rt2x00_desc_write(txd, 3, word);
 677
 678         /*
 679          * Register descriptor details in skb frame descriptor.
 680          */
 681         skbdesc->desc = txd;
 682         skbdesc->desc_len = TXD_DESC_SIZE;
 683 }
 684
 685 /*
 686  * RX control handlers
 687  */
 688 static void rt2800pci_fill_rxdone(struct queue_entry *entry,
 689                                   struct rxdone_entry_desc *rxdesc)
 690 {
 691         struct queue_entry_priv_mmio *entry_priv = entry->priv_data;
 692         __le32 *rxd = entry_priv->desc;
 693         u32 word;
 694
 695         rt2x00_desc_read(rxd, 3, &word);
 696
 697         if (rt2x00_get_field32(word, RXD_W3_CRC_ERROR))
 698                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
 699
 700         /*
 701          * Unfortunately we don't know the cipher type used during
 702          * decryption. This prevents us from correct providing
 703          * correct statistics through debugfs.
 704          */
 705         rxdesc->cipher_status = rt2x00_get_field32(word, RXD_W3_CIPHER_ERROR);
 706
 707         if (rt2x00_get_field32(word, RXD_W3_DECRYPTED)) {
 708                 /*
 709                  * Hardware has stripped IV/EIV data from 802.11 frame during
 710                  * decryption. Unfortunately the descriptor doesn't contain
 711                  * any fields with the EIV/IV data either, so they can't
 712                  * be restored by rt2x00lib.
 713                  */
 714                 rxdesc->flags |= RX_FLAG_IV_STRIPPED;
 715
 716                 /*
 717                  * The hardware has already checked the Michael Mic and has
 718                  * stripped it from the frame. Signal this to mac80211.
 719                  */
 720                 rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
 721
 722                 if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
 723                         rxdesc->flags |= RX_FLAG_DECRYPTED;
 724                 else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
 725                         rxdesc->flags |= RX_FLAG_MMIC_ERROR;
 726         }
 727
 728         if (rt2x00_get_field32(word, RXD_W3_MY_BSS))
 729                 rxdesc->dev_flags |= RXDONE_MY_BSS;
 730
 731         if (rt2x00_get_field32(word, RXD_W3_L2PAD))
 732                 rxdesc->dev_flags |= RXDONE_L2PAD;
 733
 734         /*
 735          * Process the RXWI structure that is at the start of the buffer.
 736          */
 737         rt2800_process_rxwi(entry, rxdesc);
 738
 739         /*
 740          * Remove RXWI descriptor from start of buffer.
 741          */
 742         skb_pull(entry->skb, RXWI_DESC_SIZE);
 743 }
 744
 745 /*
 746  * Interrupt functions.
 747  */
 748 static void rt2800pci_wakeup(struct rt2x00_dev *rt2x00dev)
 749 {
 750         struct ieee80211_conf conf = { .flags = 0 };
 751         struct rt2x00lib_conf libconf = { .conf = &conf };
 752
 753         rt2800_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
 754 }
 755
 756 static bool rt2800pci_txdone_entry_check(struct queue_entry *entry, u32 status)
 757 {
 758         __le32 *txwi;
 759         u32 word;
 760         int wcid, tx_wcid;
 761
 762         wcid = rt2x00_get_field32(status, TX_STA_FIFO_WCID);
 763
 764         txwi = rt2800_drv_get_txwi(entry);
 765         rt2x00_desc_read(txwi, 1, &word);
 766         tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
 767
 768         return (tx_wcid == wcid);
 769 }
 770
 771 static bool rt2800pci_txdone_find_entry(struct queue_entry *entry, void *data)
 772 {
 773         u32 status = *(u32 *)data;
 774
 775         /*
 776          * rt2800pci hardware might reorder frames when exchanging traffic
 777          * with multiple BA enabled STAs.
 778          *
 779          * For example, a tx queue
 780          *    [ STA1 | STA2 | STA1 | STA2 ]
 781          * can result in tx status reports
 782          *    [ STA1 | STA1 | STA2 | STA2 ]
 783          * when the hw decides to aggregate the frames for STA1 into one AMPDU.
 784          *
 785          * To mitigate this effect, associate the tx status to the first frame
 786          * in the tx queue with a matching wcid.
 787          */
 788         if (rt2800pci_txdone_entry_check(entry, status) &&
 789             !test_bit(ENTRY_DATA_STATUS_SET, &entry->flags)) {
 790                 /*
 791                  * Got a matching frame, associate the tx status with
 792                  * the frame
 793                  */
 794                 entry->status = status;
 795                 set_bit(ENTRY_DATA_STATUS_SET, &entry->flags);
 796                 return true;
 797         }
 798
 799         /* Check the next frame */
 800         return false;
 801 }
 802
 803 static bool rt2800pci_txdone_match_first(struct queue_entry *entry, void *data)
 804 {
 805         u32 status = *(u32 *)data;
 806
 807         /*
 808          * Find the first frame without tx status and assign this status to it
 809          * regardless if it matches or not.
 810          */
 811         if (!test_bit(ENTRY_DATA_STATUS_SET, &entry->flags)) {
 812                 /*
 813                  * Got a matching frame, associate the tx status with
 814                  * the frame
 815                  */
 816                 entry->status = status;
 817                 set_bit(ENTRY_DATA_STATUS_SET, &entry->flags);
 818                 return true;
 819         }
 820
 821         /* Check the next frame */
 822         return false;
 823 }
 824 static bool rt2800pci_txdone_release_entries(struct queue_entry *entry,
 825                                              void *data)
 826 {
 827         if (test_bit(ENTRY_DATA_STATUS_SET, &entry->flags)) {
 828                 rt2800_txdone_entry(entry, entry->status,
 829                                     rt2800pci_get_txwi(entry));
 830                 return false;
 831         }
 832
 833         /* No more frames to release */
 834         return true;
 835 }
 836
 837 static bool rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
 838 {
 839         struct data_queue *queue;
 840         u32 status;
 841         u8 qid;
 842         int max_tx_done = 16;
 843
 844         while (kfifo_get(&rt2x00dev->txstatus_fifo, &status)) {
 845                 qid = rt2x00_get_field32(status, TX_STA_FIFO_PID_QUEUE);
 846                 if (unlikely(qid >= QID_RX)) {
 847                         /*
 848                          * Unknown queue, this shouldn't happen. Just drop
 849                          * this tx status.
 850                          */
 851                         WARNING(rt2x00dev, "Got TX status report with "
 852                                            "unexpected pid %u, dropping\n", qid);
 853                         break;
 854                 }
 855
 856                 queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
 857                 if (unlikely(queue == NULL)) {
 858                         /*
 859                          * The queue is NULL, this shouldn't happen. Stop
 860                          * processing here and drop the tx status
 861                          */
 862                         WARNING(rt2x00dev, "Got TX status for an unavailable "
 863                                            "queue %u, dropping\n", qid);
 864                         break;
 865                 }
 866
 867                 if (unlikely(rt2x00queue_empty(queue))) {
 868                         /*
 869                          * The queue is empty. Stop processing here
 870                          * and drop the tx status.
 871                          */
 872                         WARNING(rt2x00dev, "Got TX status for an empty "
 873                                            "queue %u, dropping\n", qid);
 874                         break;
 875                 }
 876
 877                 /*
 878                  * Let's associate this tx status with the first
 879                  * matching frame.
 880                  */
 881                 if (!rt2x00queue_for_each_entry(queue, Q_INDEX_DONE,
 882                                                 Q_INDEX, &status,
 883                                                 rt2800pci_txdone_find_entry)) {
 884                         /*
 885                          * We cannot match the tx status to any frame, so just
 886                          * use the first one.
 887                          */
 888                         if (!rt2x00queue_for_each_entry(queue, Q_INDEX_DONE,
 889                                                         Q_INDEX, &status,
 890                                                         rt2800pci_txdone_match_first)) {
 891                                 WARNING(rt2x00dev, "No frame found for TX "
 892                                                    "status on queue %u, dropping\n",
 893                                                    qid);
 894                                 break;
 895                         }
 896                 }
 897
 898                 /*
 899                  * Release all frames with a valid tx status.
 900                  */
 901                 rt2x00queue_for_each_entry(queue, Q_INDEX_DONE,
 902                                            Q_INDEX, NULL,
 903                                            rt2800pci_txdone_release_entries);
 904
 905                 if (--max_tx_done == 0)
 906                         break;
 907         }
 908
 909         return !max_tx_done;
 910 }
 911
 912 static inline void rt2800pci_enable_interrupt(struct rt2x00_dev *rt2x00dev,
 913                                               struct rt2x00_field32 irq_field)
 914 {
 915         u32 reg;
 916
 917         /*
 918          * Enable a single interrupt. The interrupt mask register
 919          * access needs locking.
 920          */
 921         spin_lock_irq(&rt2x00dev->irqmask_lock);
 922         rt2x00mmio_register_read(rt2x00dev, INT_MASK_CSR, &reg);
 923         rt2x00_set_field32(&reg, irq_field, 1);
 924         rt2x00mmio_register_write(rt2x00dev, INT_MASK_CSR, reg);
 925         spin_unlock_irq(&rt2x00dev->irqmask_lock);
 926 }
 927
 928 static void rt2800pci_txstatus_tasklet(unsigned long data)
 929 {
 930         struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
 931         if (rt2800pci_txdone(rt2x00dev))
 932                 tasklet_schedule(&rt2x00dev->txstatus_tasklet);
 933
 934         /*
 935          * No need to enable the tx status interrupt here as we always
 936          * leave it enabled to minimize the possibility of a tx status
 937          * register overflow. See comment in interrupt handler.
 938          */
 939 }
 940
 941 static void rt2800pci_pretbtt_tasklet(unsigned long data)
 942 {
 943         struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
 944         rt2x00lib_pretbtt(rt2x00dev);
 945         if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 946                 rt2800pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_PRE_TBTT);
 947 }
 948
 949 static void rt2800pci_tbtt_tasklet(unsigned long data)
 950 {
 951         struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
 952         struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
 953         u32 reg;
 954
 955         rt2x00lib_beacondone(rt2x00dev);
 956
 957         if (rt2x00dev->intf_ap_count) {
 958                 /*
 959                  * The rt2800pci hardware tbtt timer is off by 1us per tbtt
 960                  * causing beacon skew and as a result causing problems with
 961                  * some powersaving clients over time. Shorten the beacon
 962                  * interval every 64 beacons by 64us to mitigate this effect.
 963                  */
 964                 if (drv_data->tbtt_tick == (BCN_TBTT_OFFSET - 2)) {
 965                         rt2x00mmio_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
 966                         rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_INTERVAL,
 967                                            (rt2x00dev->beacon_int * 16) - 1);
 968                         rt2x00mmio_register_write(rt2x00dev, BCN_TIME_CFG, reg);
 969                 } else if (drv_data->tbtt_tick == (BCN_TBTT_OFFSET - 1)) {
 970                         rt2x00mmio_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
 971                         rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_INTERVAL,
 972                                            (rt2x00dev->beacon_int * 16));
 973                         rt2x00mmio_register_write(rt2x00dev, BCN_TIME_CFG, reg);
 974                 }
 975                 drv_data->tbtt_tick++;
 976                 drv_data->tbtt_tick %= BCN_TBTT_OFFSET;
 977         }
 978
 979         if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 980                 rt2800pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_TBTT);
 981 }
 982
 983 static void rt2800pci_rxdone_tasklet(unsigned long data)
 984 {
 985         struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
 986         if (rt2x00mmio_rxdone(rt2x00dev))
 987                 tasklet_schedule(&rt2x00dev->rxdone_tasklet);
 988         else if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 989                 rt2800pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_RX_DONE);
 990 }
 991
 992 static void rt2800pci_autowake_tasklet(unsigned long data)
 993 {
 994         struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
 995         rt2800pci_wakeup(rt2x00dev);
 996         if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 997                 rt2800pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_AUTO_WAKEUP);
 998 }
 999
1000 static void rt2800pci_txstatus_interrupt(struct rt2x00_dev *rt2x00dev)
1001 {
1002         u32 status;
1003         int i;
1004
1005         /*
1006          * The TX_FIFO_STATUS interrupt needs special care. We should
1007          * read TX_STA_FIFO but we should do it immediately as otherwise
1008          * the register can overflow and we would lose status reports.
1009          *
1010          * Hence, read the TX_STA_FIFO register and copy all tx status
1011          * reports into a kernel FIFO which is handled in the txstatus
1012          * tasklet. We use a tasklet to process the tx status reports
1013          * because we can schedule the tasklet multiple times (when the
1014          * interrupt fires again during tx status processing).
1015          *
1016          * Furthermore we don't disable the TX_FIFO_STATUS
1017          * interrupt here but leave it enabled so that the TX_STA_FIFO
1018          * can also be read while the tx status tasklet gets executed.
1019          *
1020          * Since we have only one producer and one consumer we don't
1021          * need to lock the kfifo.
1022          */
1023         for (i = 0; i < rt2x00dev->ops->tx->entry_num; i++) {
1024                 rt2x00mmio_register_read(rt2x00dev, TX_STA_FIFO, &status);
1025
1026                 if (!rt2x00_get_field32(status, TX_STA_FIFO_VALID))
1027                         break;
1028
1029                 if (!kfifo_put(&rt2x00dev->txstatus_fifo, &status)) {
1030                         WARNING(rt2x00dev, "TX status FIFO overrun,"
1031                                 "drop tx status report.\n");
1032                         break;
1033                 }
1034         }
1035
1036         /* Schedule the tasklet for processing the tx status. */
1037         tasklet_schedule(&rt2x00dev->txstatus_tasklet);
1038 }
1039
1040 static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
1041 {
1042         struct rt2x00_dev *rt2x00dev = dev_instance;
1043         u32 reg, mask;
1044
1045         /* Read status and ACK all interrupts */
1046         rt2x00mmio_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
1047         rt2x00mmio_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
1048
1049         if (!reg)
1050                 return IRQ_NONE;
1051
1052         if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
1053                 return IRQ_HANDLED;
1054
1055         /*
1056          * Since INT_MASK_CSR and INT_SOURCE_CSR use the same bits
1057          * for interrupts and interrupt masks we can just use the value of
1058          * INT_SOURCE_CSR to create the interrupt mask.
1059          */
1060         mask = ~reg;
1061
1062         if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS)) {
1063                 rt2800pci_txstatus_interrupt(rt2x00dev);
1064                 /*
1065                  * Never disable the TX_FIFO_STATUS interrupt.
1066                  */
1067                 rt2x00_set_field32(&mask, INT_MASK_CSR_TX_FIFO_STATUS, 1);
1068         }
1069
1070         if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT))
1071                 tasklet_hi_schedule(&rt2x00dev->pretbtt_tasklet);
1072
1073         if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT))
1074                 tasklet_hi_schedule(&rt2x00dev->tbtt_tasklet);
1075
1076         if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE))
1077                 tasklet_schedule(&rt2x00dev->rxdone_tasklet);
1078
1079         if (rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP))
1080                 tasklet_schedule(&rt2x00dev->autowake_tasklet);
1081
1082         /*
1083          * Disable all interrupts for which a tasklet was scheduled right now,
1084          * the tasklet will reenable the appropriate interrupts.
1085          */
1086         spin_lock(&rt2x00dev->irqmask_lock);
1087         rt2x00mmio_register_read(rt2x00dev, INT_MASK_CSR, &reg);
1088         reg &= mask;
1089         rt2x00mmio_register_write(rt2x00dev, INT_MASK_CSR, reg);
1090         spin_unlock(&rt2x00dev->irqmask_lock);
1091
1092         return IRQ_HANDLED;
1093 }
1094
1095 /*
1096  * Device probe functions.
1097  */
1098 static int rt2800pci_read_eeprom(struct rt2x00_dev *rt2x00dev)
1099 {
1100         int retval;
1101
1102         if (rt2x00_is_soc(rt2x00dev))
1103                 retval = rt2800pci_read_eeprom_soc(rt2x00dev);
1104         else if (rt2800pci_efuse_detect(rt2x00dev))
1105                 retval = rt2800pci_read_eeprom_efuse(rt2x00dev);
1106         else
1107                 retval = rt2800pci_read_eeprom_pci(rt2x00dev);
1108
1109         return retval;
1110 }
1111
1112 static const struct ieee80211_ops rt2800pci_mac80211_ops = {
1113         .tx                     = rt2x00mac_tx,
1114         .start                  = rt2x00mac_start,
1115         .stop                   = rt2x00mac_stop,
1116         .add_interface          = rt2x00mac_add_interface,
1117         .remove_interface       = rt2x00mac_remove_interface,
1118         .config                 = rt2x00mac_config,
1119         .configure_filter       = rt2x00mac_configure_filter,
1120         .set_key                = rt2x00mac_set_key,
1121         .sw_scan_start          = rt2x00mac_sw_scan_start,
1122         .sw_scan_complete       = rt2x00mac_sw_scan_complete,
1123         .get_stats              = rt2x00mac_get_stats,
1124         .get_tkip_seq           = rt2800_get_tkip_seq,
1125         .set_rts_threshold      = rt2800_set_rts_threshold,
1126         .sta_add                = rt2x00mac_sta_add,
1127         .sta_remove             = rt2x00mac_sta_remove,
1128         .bss_info_changed       = rt2x00mac_bss_info_changed,
1129         .conf_tx                = rt2800_conf_tx,
1130         .get_tsf                = rt2800_get_tsf,
1131         .rfkill_poll            = rt2x00mac_rfkill_poll,
1132         .ampdu_action           = rt2800_ampdu_action,
1133         .flush                  = rt2x00mac_flush,
1134         .get_survey             = rt2800_get_survey,
1135         .get_ringparam          = rt2x00mac_get_ringparam,
1136         .tx_frames_pending      = rt2x00mac_tx_frames_pending,
1137 };
1138
1139 static const struct rt2800_ops rt2800pci_rt2800_ops = {
1140         .register_read          = rt2x00mmio_register_read,
1141         .register_read_lock     = rt2x00mmio_register_read, /* same for PCI */
1142         .register_write         = rt2x00mmio_register_write,
1143         .register_write_lock    = rt2x00mmio_register_write, /* same for PCI */
1144         .register_multiread     = rt2x00mmio_register_multiread,
1145         .register_multiwrite    = rt2x00mmio_register_multiwrite,
1146         .regbusy_read           = rt2x00mmio_regbusy_read,
1147         .read_eeprom            = rt2800pci_read_eeprom,
1148         .hwcrypt_disabled       = rt2800pci_hwcrypt_disabled,
1149         .drv_write_firmware     = rt2800pci_write_firmware,
1150         .drv_init_registers     = rt2800pci_init_registers,
1151         .drv_get_txwi           = rt2800pci_get_txwi,
1152 };
1153
1154 static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
1155         .irq_handler            = rt2800pci_interrupt,
1156         .txstatus_tasklet       = rt2800pci_txstatus_tasklet,
1157         .pretbtt_tasklet        = rt2800pci_pretbtt_tasklet,
1158         .tbtt_tasklet           = rt2800pci_tbtt_tasklet,
1159         .rxdone_tasklet         = rt2800pci_rxdone_tasklet,
1160         .autowake_tasklet       = rt2800pci_autowake_tasklet,
1161         .probe_hw               = rt2800_probe_hw,
1162         .get_firmware_name      = rt2800pci_get_firmware_name,
1163         .check_firmware         = rt2800_check_firmware,
1164         .load_firmware          = rt2800_load_firmware,
1165         .initialize             = rt2x00mmio_initialize,
1166         .uninitialize           = rt2x00mmio_uninitialize,
1167         .get_entry_state        = rt2800pci_get_entry_state,
1168         .clear_entry            = rt2800pci_clear_entry,
1169         .set_device_state       = rt2800pci_set_device_state,
1170         .rfkill_poll            = rt2800_rfkill_poll,
1171         .link_stats             = rt2800_link_stats,
1172         .reset_tuner            = rt2800_reset_tuner,
1173         .link_tuner             = rt2800_link_tuner,
1174         .gain_calibration       = rt2800_gain_calibration,
1175         .vco_calibration        = rt2800_vco_calibration,
1176         .start_queue            = rt2800pci_start_queue,
1177         .kick_queue             = rt2800pci_kick_queue,
1178         .stop_queue             = rt2800pci_stop_queue,
1179         .flush_queue            = rt2x00mmio_flush_queue,
1180         .write_tx_desc          = rt2800pci_write_tx_desc,
1181         .write_tx_data          = rt2800_write_tx_data,
1182         .write_beacon           = rt2800_write_beacon,
1183         .clear_beacon           = rt2800_clear_beacon,
1184         .fill_rxdone            = rt2800pci_fill_rxdone,
1185         .config_shared_key      = rt2800_config_shared_key,
1186         .config_pairwise_key    = rt2800_config_pairwise_key,
1187         .config_filter          = rt2800_config_filter,
1188         .config_intf            = rt2800_config_intf,
1189         .config_erp             = rt2800_config_erp,
1190         .config_ant             = rt2800_config_ant,
1191         .config                 = rt2800_config,
1192         .sta_add                = rt2800_sta_add,
1193         .sta_remove             = rt2800_sta_remove,
1194 };
1195
1196 static const struct data_queue_desc rt2800pci_queue_rx = {
1197         .entry_num              = 128,
1198         .data_size              = AGGREGATION_SIZE,
1199         .desc_size              = RXD_DESC_SIZE,
1200         .priv_size              = sizeof(struct queue_entry_priv_mmio),
1201 };
1202
1203 static const struct data_queue_desc rt2800pci_queue_tx = {
1204         .entry_num              = 64,
1205         .data_size              = AGGREGATION_SIZE,
1206         .desc_size              = TXD_DESC_SIZE,
1207         .priv_size              = sizeof(struct queue_entry_priv_mmio),
1208 };
1209
1210 static const struct data_queue_desc rt2800pci_queue_bcn = {
1211         .entry_num              = 8,
1212         .data_size              = 0, /* No DMA required for beacons */
1213         .desc_size              = TXWI_DESC_SIZE,
1214         .priv_size              = sizeof(struct queue_entry_priv_mmio),
1215 };
1216
1217 static const struct rt2x00_ops rt2800pci_ops = {
1218         .name                   = KBUILD_MODNAME,
1219         .drv_data_size          = sizeof(struct rt2800_drv_data),
1220         .max_ap_intf            = 8,
1221         .eeprom_size            = EEPROM_SIZE,
1222         .rf_size                = RF_SIZE,
1223         .tx_queues              = NUM_TX_QUEUES,
1224         .extra_tx_headroom      = TXWI_DESC_SIZE,
1225         .rx                     = &rt2800pci_queue_rx,
1226         .tx                     = &rt2800pci_queue_tx,
1227         .bcn                    = &rt2800pci_queue_bcn,
1228         .lib                    = &rt2800pci_rt2x00_ops,
1229         .drv                    = &rt2800pci_rt2800_ops,
1230         .hw                     = &rt2800pci_mac80211_ops,
1231 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1232         .debugfs                = &rt2800_rt2x00debug,
1233 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1234 };
1235
1236 /*
1237  * RT2800pci module information.
1238  */
1239 #ifdef CONFIG_PCI
1240 static DEFINE_PCI_DEVICE_TABLE(rt2800pci_device_table) = {
1241         { PCI_DEVICE(0x1814, 0x0601) },
1242         { PCI_DEVICE(0x1814, 0x0681) },
1243         { PCI_DEVICE(0x1814, 0x0701) },
1244         { PCI_DEVICE(0x1814, 0x0781) },
1245         { PCI_DEVICE(0x1814, 0x3090) },
1246         { PCI_DEVICE(0x1814, 0x3091) },
1247         { PCI_DEVICE(0x1814, 0x3092) },
1248         { PCI_DEVICE(0x1432, 0x7708) },
1249         { PCI_DEVICE(0x1432, 0x7727) },
1250         { PCI_DEVICE(0x1432, 0x7728) },
1251         { PCI_DEVICE(0x1432, 0x7738) },
1252         { PCI_DEVICE(0x1432, 0x7748) },
1253         { PCI_DEVICE(0x1432, 0x7758) },
1254         { PCI_DEVICE(0x1432, 0x7768) },
1255         { PCI_DEVICE(0x1462, 0x891a) },
1256         { PCI_DEVICE(0x1a3b, 0x1059) },
1257 #ifdef CONFIG_RT2800PCI_RT3290
1258         { PCI_DEVICE(0x1814, 0x3290) },
1259 #endif
1260 #ifdef CONFIG_RT2800PCI_RT33XX
1261         { PCI_DEVICE(0x1814, 0x3390) },
1262 #endif
1263 #ifdef CONFIG_RT2800PCI_RT35XX
1264         { PCI_DEVICE(0x1432, 0x7711) },
1265         { PCI_DEVICE(0x1432, 0x7722) },
1266         { PCI_DEVICE(0x1814, 0x3060) },
1267         { PCI_DEVICE(0x1814, 0x3062) },
1268         { PCI_DEVICE(0x1814, 0x3562) },
1269         { PCI_DEVICE(0x1814, 0x3592) },
1270         { PCI_DEVICE(0x1814, 0x3593) },
1271         { PCI_DEVICE(0x1814, 0x359f) },
1272 #endif
1273 #ifdef CONFIG_RT2800PCI_RT53XX
1274         { PCI_DEVICE(0x1814, 0x5360) },
1275         { PCI_DEVICE(0x1814, 0x5362) },
1276         { PCI_DEVICE(0x1814, 0x5390) },
1277         { PCI_DEVICE(0x1814, 0x5392) },
1278         { PCI_DEVICE(0x1814, 0x539a) },
1279         { PCI_DEVICE(0x1814, 0x539b) },
1280         { PCI_DEVICE(0x1814, 0x539f) },
1281 #endif
1282         { 0, }
1283 };
1284 #endif /* CONFIG_PCI */
1285
1286 MODULE_AUTHOR(DRV_PROJECT);
1287 MODULE_VERSION(DRV_VERSION);
1288 MODULE_DESCRIPTION("Ralink RT2800 PCI & PCMCIA Wireless LAN driver.");
1289 MODULE_SUPPORTED_DEVICE("Ralink RT2860 PCI & PCMCIA chipset based cards");
1290 #ifdef CONFIG_PCI
1291 MODULE_FIRMWARE(FIRMWARE_RT2860);
1292 MODULE_DEVICE_TABLE(pci, rt2800pci_device_table);
1293 #endif /* CONFIG_PCI */
1294 MODULE_LICENSE("GPL");
1295
1296 #if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
1297 static int rt2800soc_probe(struct platform_device *pdev)
1298 {
1299         return rt2x00soc_probe(pdev, &rt2800pci_ops);
1300 }
1301
1302 static struct platform_driver rt2800soc_driver = {
1303         .driver         = {
1304                 .name           = "rt2800_wmac",
1305                 .owner          = THIS_MODULE,
1306                 .mod_name       = KBUILD_MODNAME,
1307         },
1308         .probe          = rt2800soc_probe,
1309         .remove         = rt2x00soc_remove,
1310         .suspend        = rt2x00soc_suspend,
1311         .resume         = rt2x00soc_resume,
1312 };
1313 #endif /* CONFIG_SOC_RT288X || CONFIG_SOC_RT305X */
1314
1315 #ifdef CONFIG_PCI
1316 static int rt2800pci_probe(struct pci_dev *pci_dev,
1317                            const struct pci_device_id *id)
1318 {
1319         return rt2x00pci_probe(pci_dev, &rt2800pci_ops);
1320 }
1321
1322 static struct pci_driver rt2800pci_driver = {
1323         .name           = KBUILD_MODNAME,
1324         .id_table       = rt2800pci_device_table,
1325         .probe          = rt2800pci_probe,
1326         .remove         = rt2x00pci_remove,
1327         .suspend        = rt2x00pci_suspend,
1328         .resume         = rt2x00pci_resume,
1329 };
1330 #endif /* CONFIG_PCI */
1331
1332 static int __init rt2800pci_init(void)
1333 {
1334         int ret = 0;
1335
1336 #if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
1337         ret = platform_driver_register(&rt2800soc_driver);
1338         if (ret)
1339                 return ret;
1340 #endif
1341 #ifdef CONFIG_PCI
1342         ret = pci_register_driver(&rt2800pci_driver);
1343         if (ret) {
1344 #if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
1345                 platform_driver_unregister(&rt2800soc_driver);
1346 #endif
1347                 return ret;
1348         }
1349 #endif
1350
1351         return ret;
1352 }
1353
1354 static void __exit rt2800pci_exit(void)
1355 {
1356 #ifdef CONFIG_PCI
1357         pci_unregister_driver(&rt2800pci_driver);
1358 #endif
1359 #if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
1360         platform_driver_unregister(&rt2800soc_driver);
1361 #endif
1362 }
1363
1364 module_init(rt2800pci_init);
1365 module_exit(rt2800pci_exit);