drivers/net/wireless/ralink/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, see <http://www.gnu.org/licenses/>.
  24  */
  25
  26 /*
  27         Module: rt2800pci
  28         Abstract: rt2800pci device specific routines.
  29         Supported chipsets: RT2800E & RT2800ED.
  30  */
  31
  32 #include <linux/delay.h>
  33 #include <linux/etherdevice.h>
  34 #include <linux/init.h>
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/pci.h>
  38 #include <linux/eeprom_93cx6.h>
  39
  40 #include "rt2x00.h"
  41 #include "rt2x00mmio.h"
  42 #include "rt2x00pci.h"
  43 #include "rt2800lib.h"
  44 #include "rt2800mmio.h"
  45 #include "rt2800.h"
  46 #include "rt2800pci.h"
  47
  48 /*
  49  * Allow hardware encryption to be disabled.
  50  */
  51 static bool modparam_nohwcrypt = false;
  52 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, 0444);
  53 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  54
  55 static bool rt2800pci_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
  56 {
  57         return modparam_nohwcrypt;
  58 }
  59
  60 static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
  61 {
  62         unsigned int i;
  63         u32 reg;
  64
  65         /*
  66          * SOC devices don't support MCU requests.
  67          */
  68         if (rt2x00_is_soc(rt2x00dev))
  69                 return;
  70
  71         for (i = 0; i < 200; i++) {
  72                 reg = rt2x00mmio_register_read(rt2x00dev, H2M_MAILBOX_CID);
  73
  74                 if ((rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD0) == token) ||
  75                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD1) == token) ||
  76                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD2) == token) ||
  77                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD3) == token))
  78                         break;
  79
  80                 udelay(REGISTER_BUSY_DELAY);
  81         }
  82
  83         if (i == 200)
  84                 rt2x00_err(rt2x00dev, "MCU request failed, no response from hardware\n");
  85
  86         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
  87         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
  88 }
  89
  90 static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
  91 {
  92         struct rt2x00_dev *rt2x00dev = eeprom->data;
  93         u32 reg;
  94
  95         reg = rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR);
  96
  97         eeprom->reg_data_in = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_IN);
  98         eeprom->reg_data_out = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_OUT);
  99         eeprom->reg_data_clock =
 100             !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_CLOCK);
 101         eeprom->reg_chip_select =
 102             !!rt2x00_get_field32(reg, E2PROM_CSR_CHIP_SELECT);
 103 }
 104
 105 static void rt2800pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
 106 {
 107         struct rt2x00_dev *rt2x00dev = eeprom->data;
 108         u32 reg = 0;
 109
 110         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_IN, !!eeprom->reg_data_in);
 111         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_OUT, !!eeprom->reg_data_out);
 112         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_CLOCK,
 113                            !!eeprom->reg_data_clock);
 114         rt2x00_set_field32(&reg, E2PROM_CSR_CHIP_SELECT,
 115                            !!eeprom->reg_chip_select);
 116
 117         rt2x00mmio_register_write(rt2x00dev, E2PROM_CSR, reg);
 118 }
 119
 120 static int rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
 121 {
 122         struct eeprom_93cx6 eeprom;
 123         u32 reg;
 124
 125         reg = rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR);
 126
 127         eeprom.data = rt2x00dev;
 128         eeprom.register_read = rt2800pci_eepromregister_read;
 129         eeprom.register_write = rt2800pci_eepromregister_write;
 130         switch (rt2x00_get_field32(reg, E2PROM_CSR_TYPE))
 131         {
 132         case 0:
 133                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 134                 break;
 135         case 1:
 136                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 137                 break;
 138         default:
 139                 eeprom.width = PCI_EEPROM_WIDTH_93C86;
 140                 break;
 141         }
 142         eeprom.reg_data_in = 0;
 143         eeprom.reg_data_out = 0;
 144         eeprom.reg_data_clock = 0;
 145         eeprom.reg_chip_select = 0;
 146
 147         eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
 148                                EEPROM_SIZE / sizeof(u16));
 149
 150         return 0;
 151 }
 152
 153 static int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
 154 {
 155         return rt2800_efuse_detect(rt2x00dev);
 156 }
 157
 158 static inline int rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
 159 {
 160         return rt2800_read_eeprom_efuse(rt2x00dev);
 161 }
 162
 163 /*
 164  * Firmware functions
 165  */
 166 static char *rt2800pci_get_firmware_name(struct rt2x00_dev *rt2x00dev)
 167 {
 168         /*
 169          * Chip rt3290 use specific 4KB firmware named rt3290.bin.
 170          */
 171         if (rt2x00_rt(rt2x00dev, RT3290))
 172                 return FIRMWARE_RT3290;
 173         else
 174                 return FIRMWARE_RT2860;
 175 }
 176
 177 static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
 178                                     const u8 *data, const size_t len)
 179 {
 180         u32 reg;
 181
 182         /*
 183          * enable Host program ram write selection
 184          */
 185         reg = 0;
 186         rt2x00_set_field32(&reg, PBF_SYS_CTRL_HOST_RAM_WRITE, 1);
 187         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, reg);
 188
 189         /*
 190          * Write firmware to device.
 191          */
 192         rt2x00mmio_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
 193                                        data, len);
 194
 195         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000);
 196         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001);
 197
 198         rt2x00mmio_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
 199         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
 200
 201         return 0;
 202 }
 203
 204 /*
 205  * Device state switch handlers.
 206  */
 207 static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 208 {
 209         int retval;
 210
 211         retval = rt2800mmio_enable_radio(rt2x00dev);
 212         if (retval)
 213                 return retval;
 214
 215         /* After resume MCU_BOOT_SIGNAL will trash these. */
 216         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
 217         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
 218
 219         rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_RADIO_OFF, 0xff, 0x02);
 220         rt2800pci_mcu_status(rt2x00dev, TOKEN_RADIO_OFF);
 221
 222         rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP, 0, 0);
 223         rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
 224
 225         return retval;
 226 }
 227
 228 static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
 229                                enum dev_state state)
 230 {
 231         if (state == STATE_AWAKE) {
 232                 rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP,
 233                                    0, 0x02);
 234                 rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
 235         } else if (state == STATE_SLEEP) {
 236                 rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS,
 237                                           0xffffffff);
 238                 rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID,
 239                                           0xffffffff);
 240                 rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_SLEEP,
 241                                    0xff, 0x01);
 242         }
 243
 244         return 0;
 245 }
 246
 247 static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 248                                       enum dev_state state)
 249 {
 250         int retval = 0;
 251
 252         switch (state) {
 253         case STATE_RADIO_ON:
 254                 retval = rt2800pci_enable_radio(rt2x00dev);
 255                 break;
 256         case STATE_RADIO_OFF:
 257                 /*
 258                  * After the radio has been disabled, the device should
 259                  * be put to sleep for powersaving.
 260                  */
 261                 rt2800pci_set_state(rt2x00dev, STATE_SLEEP);
 262                 break;
 263         case STATE_RADIO_IRQ_ON:
 264         case STATE_RADIO_IRQ_OFF:
 265                 rt2800mmio_toggle_irq(rt2x00dev, state);
 266                 break;
 267         case STATE_DEEP_SLEEP:
 268         case STATE_SLEEP:
 269         case STATE_STANDBY:
 270         case STATE_AWAKE:
 271                 retval = rt2800pci_set_state(rt2x00dev, state);
 272                 break;
 273         default:
 274                 retval = -ENOTSUPP;
 275                 break;
 276         }
 277
 278         if (unlikely(retval))
 279                 rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n",
 280                            state, retval);
 281
 282         return retval;
 283 }
 284
 285 /*
 286  * Device probe functions.
 287  */
 288 static int rt2800pci_read_eeprom(struct rt2x00_dev *rt2x00dev)
 289 {
 290         int retval;
 291
 292         if (rt2800pci_efuse_detect(rt2x00dev))
 293                 retval = rt2800pci_read_eeprom_efuse(rt2x00dev);
 294         else
 295                 retval = rt2800pci_read_eeprom_pci(rt2x00dev);
 296
 297         return retval;
 298 }
 299
 300 static const struct ieee80211_ops rt2800pci_mac80211_ops = {
 301         .tx                     = rt2x00mac_tx,
 302         .start                  = rt2x00mac_start,
 303         .stop                   = rt2x00mac_stop,
 304         .add_interface          = rt2x00mac_add_interface,
 305         .remove_interface       = rt2x00mac_remove_interface,
 306         .config                 = rt2x00mac_config,
 307         .configure_filter       = rt2x00mac_configure_filter,
 308         .set_key                = rt2x00mac_set_key,
 309         .sw_scan_start          = rt2x00mac_sw_scan_start,
 310         .sw_scan_complete       = rt2x00mac_sw_scan_complete,
 311         .get_stats              = rt2x00mac_get_stats,
 312         .get_key_seq            = rt2800_get_key_seq,
 313         .set_rts_threshold      = rt2800_set_rts_threshold,
 314         .sta_add                = rt2800_sta_add,
 315         .sta_remove             = rt2800_sta_remove,
 316         .bss_info_changed       = rt2x00mac_bss_info_changed,
 317         .conf_tx                = rt2800_conf_tx,
 318         .get_tsf                = rt2800_get_tsf,
 319         .rfkill_poll            = rt2x00mac_rfkill_poll,
 320         .ampdu_action           = rt2800_ampdu_action,
 321         .flush                  = rt2x00mac_flush,
 322         .get_survey             = rt2800_get_survey,
 323         .get_ringparam          = rt2x00mac_get_ringparam,
 324         .tx_frames_pending      = rt2x00mac_tx_frames_pending,
 325 };
 326
 327 static const struct rt2800_ops rt2800pci_rt2800_ops = {
 328         .register_read          = rt2x00mmio_register_read,
 329         .register_read_lock     = rt2x00mmio_register_read, /* same for PCI */
 330         .register_write         = rt2x00mmio_register_write,
 331         .register_write_lock    = rt2x00mmio_register_write, /* same for PCI */
 332         .register_multiread     = rt2x00mmio_register_multiread,
 333         .register_multiwrite    = rt2x00mmio_register_multiwrite,
 334         .regbusy_read           = rt2x00mmio_regbusy_read,
 335         .read_eeprom            = rt2800pci_read_eeprom,
 336         .hwcrypt_disabled       = rt2800pci_hwcrypt_disabled,
 337         .drv_write_firmware     = rt2800pci_write_firmware,
 338         .drv_init_registers     = rt2800mmio_init_registers,
 339         .drv_get_txwi           = rt2800mmio_get_txwi,
 340 };
 341
 342 static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
 343         .irq_handler            = rt2800mmio_interrupt,
 344         .txstatus_tasklet       = rt2800mmio_txstatus_tasklet,
 345         .pretbtt_tasklet        = rt2800mmio_pretbtt_tasklet,
 346         .tbtt_tasklet           = rt2800mmio_tbtt_tasklet,
 347         .rxdone_tasklet         = rt2800mmio_rxdone_tasklet,
 348         .autowake_tasklet       = rt2800mmio_autowake_tasklet,
 349         .probe_hw               = rt2800_probe_hw,
 350         .get_firmware_name      = rt2800pci_get_firmware_name,
 351         .check_firmware         = rt2800_check_firmware,
 352         .load_firmware          = rt2800_load_firmware,
 353         .initialize             = rt2x00mmio_initialize,
 354         .uninitialize           = rt2x00mmio_uninitialize,
 355         .get_entry_state        = rt2800mmio_get_entry_state,
 356         .clear_entry            = rt2800mmio_clear_entry,
 357         .set_device_state       = rt2800pci_set_device_state,
 358         .rfkill_poll            = rt2800_rfkill_poll,
 359         .link_stats             = rt2800_link_stats,
 360         .reset_tuner            = rt2800_reset_tuner,
 361         .link_tuner             = rt2800_link_tuner,
 362         .gain_calibration       = rt2800_gain_calibration,
 363         .vco_calibration        = rt2800_vco_calibration,
 364         .start_queue            = rt2800mmio_start_queue,
 365         .kick_queue             = rt2800mmio_kick_queue,
 366         .stop_queue             = rt2800mmio_stop_queue,
 367         .flush_queue            = rt2800mmio_flush_queue,
 368         .write_tx_desc          = rt2800mmio_write_tx_desc,
 369         .write_tx_data          = rt2800_write_tx_data,
 370         .write_beacon           = rt2800_write_beacon,
 371         .clear_beacon           = rt2800_clear_beacon,
 372         .fill_rxdone            = rt2800mmio_fill_rxdone,
 373         .config_shared_key      = rt2800_config_shared_key,
 374         .config_pairwise_key    = rt2800_config_pairwise_key,
 375         .config_filter          = rt2800_config_filter,
 376         .config_intf            = rt2800_config_intf,
 377         .config_erp             = rt2800_config_erp,
 378         .config_ant             = rt2800_config_ant,
 379         .config                 = rt2800_config,
 380 };
 381
 382 static const struct rt2x00_ops rt2800pci_ops = {
 383         .name                   = KBUILD_MODNAME,
 384         .drv_data_size          = sizeof(struct rt2800_drv_data),
 385         .max_ap_intf            = 8,
 386         .eeprom_size            = EEPROM_SIZE,
 387         .rf_size                = RF_SIZE,
 388         .tx_queues              = NUM_TX_QUEUES,
 389         .queue_init             = rt2800mmio_queue_init,
 390         .lib                    = &rt2800pci_rt2x00_ops,
 391         .drv                    = &rt2800pci_rt2800_ops,
 392         .hw                     = &rt2800pci_mac80211_ops,
 393 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 394         .debugfs                = &rt2800_rt2x00debug,
 395 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 396 };
 397
 398 /*
 399  * RT2800pci module information.
 400  */
 401 static const struct pci_device_id rt2800pci_device_table[] = {
 402         { PCI_DEVICE(0x1814, 0x0601) },
 403         { PCI_DEVICE(0x1814, 0x0681) },
 404         { PCI_DEVICE(0x1814, 0x0701) },
 405         { PCI_DEVICE(0x1814, 0x0781) },
 406         { PCI_DEVICE(0x1814, 0x3090) },
 407         { PCI_DEVICE(0x1814, 0x3091) },
 408         { PCI_DEVICE(0x1814, 0x3092) },
 409         { PCI_DEVICE(0x1432, 0x7708) },
 410         { PCI_DEVICE(0x1432, 0x7727) },
 411         { PCI_DEVICE(0x1432, 0x7728) },
 412         { PCI_DEVICE(0x1432, 0x7738) },
 413         { PCI_DEVICE(0x1432, 0x7748) },
 414         { PCI_DEVICE(0x1432, 0x7758) },
 415         { PCI_DEVICE(0x1432, 0x7768) },
 416         { PCI_DEVICE(0x1462, 0x891a) },
 417         { PCI_DEVICE(0x1a3b, 0x1059) },
 418 #ifdef CONFIG_RT2800PCI_RT3290
 419         { PCI_DEVICE(0x1814, 0x3290) },
 420 #endif
 421 #ifdef CONFIG_RT2800PCI_RT33XX
 422         { PCI_DEVICE(0x1814, 0x3390) },
 423 #endif
 424 #ifdef CONFIG_RT2800PCI_RT35XX
 425         { PCI_DEVICE(0x1432, 0x7711) },
 426         { PCI_DEVICE(0x1432, 0x7722) },
 427         { PCI_DEVICE(0x1814, 0x3060) },
 428         { PCI_DEVICE(0x1814, 0x3062) },
 429         { PCI_DEVICE(0x1814, 0x3562) },
 430         { PCI_DEVICE(0x1814, 0x3592) },
 431         { PCI_DEVICE(0x1814, 0x3593) },
 432         { PCI_DEVICE(0x1814, 0x359f) },
 433 #endif
 434 #ifdef CONFIG_RT2800PCI_RT53XX
 435         { PCI_DEVICE(0x1814, 0x5360) },
 436         { PCI_DEVICE(0x1814, 0x5362) },
 437         { PCI_DEVICE(0x1814, 0x5390) },
 438         { PCI_DEVICE(0x1814, 0x5392) },
 439         { PCI_DEVICE(0x1814, 0x539a) },
 440         { PCI_DEVICE(0x1814, 0x539b) },
 441         { PCI_DEVICE(0x1814, 0x539f) },
 442 #endif
 443         { 0, }
 444 };
 445
 446 MODULE_AUTHOR(DRV_PROJECT);
 447 MODULE_VERSION(DRV_VERSION);
 448 MODULE_DESCRIPTION("Ralink RT2800 PCI & PCMCIA Wireless LAN driver.");
 449 MODULE_SUPPORTED_DEVICE("Ralink RT2860 PCI & PCMCIA chipset based cards");
 450 MODULE_FIRMWARE(FIRMWARE_RT2860);
 451 MODULE_DEVICE_TABLE(pci, rt2800pci_device_table);
 452 MODULE_LICENSE("GPL");
 453
 454 static int rt2800pci_probe(struct pci_dev *pci_dev,
 455                            const struct pci_device_id *id)
 456 {
 457         return rt2x00pci_probe(pci_dev, &rt2800pci_ops);
 458 }
 459
 460 static struct pci_driver rt2800pci_driver = {
 461         .name           = KBUILD_MODNAME,
 462         .id_table       = rt2800pci_device_table,
 463         .probe          = rt2800pci_probe,
 464         .remove         = rt2x00pci_remove,
 465         .suspend        = rt2x00pci_suspend,
 466         .resume         = rt2x00pci_resume,
 467 };
 468
 469 module_pci_driver(rt2800pci_driver);