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/eeprom_93cx6.h>
  41
  42 #include "rt2x00.h"
  43 #include "rt2x00mmio.h"
  44 #include "rt2x00pci.h"
  45 #include "rt2800lib.h"
  46 #include "rt2800mmio.h"
  47 #include "rt2800.h"
  48 #include "rt2800pci.h"
  49
  50 /*
  51  * Allow hardware encryption to be disabled.
  52  */
  53 static bool modparam_nohwcrypt = false;
  54 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  55 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  56
  57 static bool rt2800pci_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
  58 {
  59         return modparam_nohwcrypt;
  60 }
  61
  62 static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
  63 {
  64         unsigned int i;
  65         u32 reg;
  66
  67         /*
  68          * SOC devices don't support MCU requests.
  69          */
  70         if (rt2x00_is_soc(rt2x00dev))
  71                 return;
  72
  73         for (i = 0; i < 200; i++) {
  74                 rt2x00mmio_register_read(rt2x00dev, H2M_MAILBOX_CID, &reg);
  75
  76                 if ((rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD0) == token) ||
  77                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD1) == token) ||
  78                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD2) == token) ||
  79                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD3) == token))
  80                         break;
  81
  82                 udelay(REGISTER_BUSY_DELAY);
  83         }
  84
  85         if (i == 200)
  86                 rt2x00_err(rt2x00dev, "MCU request failed, no response from hardware\n");
  87
  88         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
  89         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
  90 }
  91
  92 static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
  93 {
  94         struct rt2x00_dev *rt2x00dev = eeprom->data;
  95         u32 reg;
  96
  97         rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR, &reg);
  98
  99         eeprom->reg_data_in = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_IN);
 100         eeprom->reg_data_out = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_OUT);
 101         eeprom->reg_data_clock =
 102             !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_CLOCK);
 103         eeprom->reg_chip_select =
 104             !!rt2x00_get_field32(reg, E2PROM_CSR_CHIP_SELECT);
 105 }
 106
 107 static void rt2800pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
 108 {
 109         struct rt2x00_dev *rt2x00dev = eeprom->data;
 110         u32 reg = 0;
 111
 112         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_IN, !!eeprom->reg_data_in);
 113         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_OUT, !!eeprom->reg_data_out);
 114         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_CLOCK,
 115                            !!eeprom->reg_data_clock);
 116         rt2x00_set_field32(&reg, E2PROM_CSR_CHIP_SELECT,
 117                            !!eeprom->reg_chip_select);
 118
 119         rt2x00mmio_register_write(rt2x00dev, E2PROM_CSR, reg);
 120 }
 121
 122 static int rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
 123 {
 124         struct eeprom_93cx6 eeprom;
 125         u32 reg;
 126
 127         rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR, &reg);
 128
 129         eeprom.data = rt2x00dev;
 130         eeprom.register_read = rt2800pci_eepromregister_read;
 131         eeprom.register_write = rt2800pci_eepromregister_write;
 132         switch (rt2x00_get_field32(reg, E2PROM_CSR_TYPE))
 133         {
 134         case 0:
 135                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 136                 break;
 137         case 1:
 138                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 139                 break;
 140         default:
 141                 eeprom.width = PCI_EEPROM_WIDTH_93C86;
 142                 break;
 143         }
 144         eeprom.reg_data_in = 0;
 145         eeprom.reg_data_out = 0;
 146         eeprom.reg_data_clock = 0;
 147         eeprom.reg_chip_select = 0;
 148
 149         eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
 150                                EEPROM_SIZE / sizeof(u16));
 151
 152         return 0;
 153 }
 154
 155 static int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
 156 {
 157         return rt2800_efuse_detect(rt2x00dev);
 158 }
 159
 160 static inline int rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
 161 {
 162         return rt2800_read_eeprom_efuse(rt2x00dev);
 163 }
 164
 165 /*
 166  * Firmware functions
 167  */
 168 static char *rt2800pci_get_firmware_name(struct rt2x00_dev *rt2x00dev)
 169 {
 170         /*
 171          * Chip rt3290 use specific 4KB firmware named rt3290.bin.
 172          */
 173         if (rt2x00_rt(rt2x00dev, RT3290))
 174                 return FIRMWARE_RT3290;
 175         else
 176                 return FIRMWARE_RT2860;
 177 }
 178
 179 static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
 180                                     const u8 *data, const size_t len)
 181 {
 182         u32 reg;
 183
 184         /*
 185          * enable Host program ram write selection
 186          */
 187         reg = 0;
 188         rt2x00_set_field32(&reg, PBF_SYS_CTRL_HOST_RAM_WRITE, 1);
 189         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, reg);
 190
 191         /*
 192          * Write firmware to device.
 193          */
 194         rt2x00mmio_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
 195                                        data, len);
 196
 197         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000);
 198         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001);
 199
 200         rt2x00mmio_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
 201         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
 202
 203         return 0;
 204 }
 205
 206 /*
 207  * Device state switch handlers.
 208  */
 209 static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 210 {
 211         int retval;
 212
 213         retval = rt2800mmio_enable_radio(rt2x00dev);
 214         if (retval)
 215                 return retval;
 216
 217         /* After resume MCU_BOOT_SIGNAL will trash these. */
 218         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
 219         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
 220
 221         rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_RADIO_OFF, 0xff, 0x02);
 222         rt2800pci_mcu_status(rt2x00dev, TOKEN_RADIO_OFF);
 223
 224         rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP, 0, 0);
 225         rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
 226
 227         return retval;
 228 }
 229
 230 static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
 231                                enum dev_state state)
 232 {
 233         if (state == STATE_AWAKE) {
 234                 rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP,
 235                                    0, 0x02);
 236                 rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
 237         } else if (state == STATE_SLEEP) {
 238                 rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS,
 239                                           0xffffffff);
 240                 rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID,
 241                                           0xffffffff);
 242                 rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_SLEEP,
 243                                    0xff, 0x01);
 244         }
 245
 246         return 0;
 247 }
 248
 249 static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 250                                       enum dev_state state)
 251 {
 252         int retval = 0;
 253
 254         switch (state) {
 255         case STATE_RADIO_ON:
 256                 retval = rt2800pci_enable_radio(rt2x00dev);
 257                 break;
 258         case STATE_RADIO_OFF:
 259                 /*
 260                  * After the radio has been disabled, the device should
 261                  * be put to sleep for powersaving.
 262                  */
 263                 rt2800pci_set_state(rt2x00dev, STATE_SLEEP);
 264                 break;
 265         case STATE_RADIO_IRQ_ON:
 266         case STATE_RADIO_IRQ_OFF:
 267                 rt2800mmio_toggle_irq(rt2x00dev, state);
 268                 break;
 269         case STATE_DEEP_SLEEP:
 270         case STATE_SLEEP:
 271         case STATE_STANDBY:
 272         case STATE_AWAKE:
 273                 retval = rt2800pci_set_state(rt2x00dev, state);
 274                 break;
 275         default:
 276                 retval = -ENOTSUPP;
 277                 break;
 278         }
 279
 280         if (unlikely(retval))
 281                 rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n",
 282                            state, retval);
 283
 284         return retval;
 285 }
 286
 287 /*
 288  * Device probe functions.
 289  */
 290 static int rt2800pci_read_eeprom(struct rt2x00_dev *rt2x00dev)
 291 {
 292         int retval;
 293
 294         if (rt2800pci_efuse_detect(rt2x00dev))
 295                 retval = rt2800pci_read_eeprom_efuse(rt2x00dev);
 296         else
 297                 retval = rt2800pci_read_eeprom_pci(rt2x00dev);
 298
 299         return retval;
 300 }
 301
 302 static const struct ieee80211_ops rt2800pci_mac80211_ops = {
 303         .tx                     = rt2x00mac_tx,
 304         .start                  = rt2x00mac_start,
 305         .stop                   = rt2x00mac_stop,
 306         .add_interface          = rt2x00mac_add_interface,
 307         .remove_interface       = rt2x00mac_remove_interface,
 308         .config                 = rt2x00mac_config,
 309         .configure_filter       = rt2x00mac_configure_filter,
 310         .set_key                = rt2x00mac_set_key,
 311         .sw_scan_start          = rt2x00mac_sw_scan_start,
 312         .sw_scan_complete       = rt2x00mac_sw_scan_complete,
 313         .get_stats              = rt2x00mac_get_stats,
 314         .get_tkip_seq           = rt2800_get_tkip_seq,
 315         .set_rts_threshold      = rt2800_set_rts_threshold,
 316         .sta_add                = rt2x00mac_sta_add,
 317         .sta_remove             = rt2x00mac_sta_remove,
 318         .bss_info_changed       = rt2x00mac_bss_info_changed,
 319         .conf_tx                = rt2800_conf_tx,
 320         .get_tsf                = rt2800_get_tsf,
 321         .rfkill_poll            = rt2x00mac_rfkill_poll,
 322         .ampdu_action           = rt2800_ampdu_action,
 323         .flush                  = rt2x00mac_flush,
 324         .get_survey             = rt2800_get_survey,
 325         .get_ringparam          = rt2x00mac_get_ringparam,
 326         .tx_frames_pending      = rt2x00mac_tx_frames_pending,
 327 };
 328
 329 static const struct rt2800_ops rt2800pci_rt2800_ops = {
 330         .register_read          = rt2x00mmio_register_read,
 331         .register_read_lock     = rt2x00mmio_register_read, /* same for PCI */
 332         .register_write         = rt2x00mmio_register_write,
 333         .register_write_lock    = rt2x00mmio_register_write, /* same for PCI */
 334         .register_multiread     = rt2x00mmio_register_multiread,
 335         .register_multiwrite    = rt2x00mmio_register_multiwrite,
 336         .regbusy_read           = rt2x00mmio_regbusy_read,
 337         .read_eeprom            = rt2800pci_read_eeprom,
 338         .hwcrypt_disabled       = rt2800pci_hwcrypt_disabled,
 339         .drv_write_firmware     = rt2800pci_write_firmware,
 340         .drv_init_registers     = rt2800mmio_init_registers,
 341         .drv_get_txwi           = rt2800mmio_get_txwi,
 342 };
 343
 344 static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
 345         .irq_handler            = rt2800mmio_interrupt,
 346         .txstatus_tasklet       = rt2800mmio_txstatus_tasklet,
 347         .pretbtt_tasklet        = rt2800mmio_pretbtt_tasklet,
 348         .tbtt_tasklet           = rt2800mmio_tbtt_tasklet,
 349         .rxdone_tasklet         = rt2800mmio_rxdone_tasklet,
 350         .autowake_tasklet       = rt2800mmio_autowake_tasklet,
 351         .probe_hw               = rt2800_probe_hw,
 352         .get_firmware_name      = rt2800pci_get_firmware_name,
 353         .check_firmware         = rt2800_check_firmware,
 354         .load_firmware          = rt2800_load_firmware,
 355         .initialize             = rt2x00mmio_initialize,
 356         .uninitialize           = rt2x00mmio_uninitialize,
 357         .get_entry_state        = rt2800mmio_get_entry_state,
 358         .clear_entry            = rt2800mmio_clear_entry,
 359         .set_device_state       = rt2800pci_set_device_state,
 360         .rfkill_poll            = rt2800_rfkill_poll,
 361         .link_stats             = rt2800_link_stats,
 362         .reset_tuner            = rt2800_reset_tuner,
 363         .link_tuner             = rt2800_link_tuner,
 364         .gain_calibration       = rt2800_gain_calibration,
 365         .vco_calibration        = rt2800_vco_calibration,
 366         .start_queue            = rt2800mmio_start_queue,
 367         .kick_queue             = rt2800mmio_kick_queue,
 368         .stop_queue             = rt2800mmio_stop_queue,
 369         .flush_queue            = rt2x00mmio_flush_queue,
 370         .write_tx_desc          = rt2800mmio_write_tx_desc,
 371         .write_tx_data          = rt2800_write_tx_data,
 372         .write_beacon           = rt2800_write_beacon,
 373         .clear_beacon           = rt2800_clear_beacon,
 374         .fill_rxdone            = rt2800mmio_fill_rxdone,
 375         .config_shared_key      = rt2800_config_shared_key,
 376         .config_pairwise_key    = rt2800_config_pairwise_key,
 377         .config_filter          = rt2800_config_filter,
 378         .config_intf            = rt2800_config_intf,
 379         .config_erp             = rt2800_config_erp,
 380         .config_ant             = rt2800_config_ant,
 381         .config                 = rt2800_config,
 382         .sta_add                = rt2800_sta_add,
 383         .sta_remove             = rt2800_sta_remove,
 384 };
 385
 386 static const struct rt2x00_ops rt2800pci_ops = {
 387         .name                   = KBUILD_MODNAME,
 388         .drv_data_size          = sizeof(struct rt2800_drv_data),
 389         .max_ap_intf            = 8,
 390         .eeprom_size            = EEPROM_SIZE,
 391         .rf_size                = RF_SIZE,
 392         .tx_queues              = NUM_TX_QUEUES,
 393         .queue_init             = rt2800mmio_queue_init,
 394         .lib                    = &rt2800pci_rt2x00_ops,
 395         .drv                    = &rt2800pci_rt2800_ops,
 396         .hw                     = &rt2800pci_mac80211_ops,
 397 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 398         .debugfs                = &rt2800_rt2x00debug,
 399 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 400 };
 401
 402 /*
 403  * RT2800pci module information.
 404  */
 405 static DEFINE_PCI_DEVICE_TABLE(rt2800pci_device_table) = {
 406         { PCI_DEVICE(0x1814, 0x0601) },
 407         { PCI_DEVICE(0x1814, 0x0681) },
 408         { PCI_DEVICE(0x1814, 0x0701) },
 409         { PCI_DEVICE(0x1814, 0x0781) },
 410         { PCI_DEVICE(0x1814, 0x3090) },
 411         { PCI_DEVICE(0x1814, 0x3091) },
 412         { PCI_DEVICE(0x1814, 0x3092) },
 413         { PCI_DEVICE(0x1432, 0x7708) },
 414         { PCI_DEVICE(0x1432, 0x7727) },
 415         { PCI_DEVICE(0x1432, 0x7728) },
 416         { PCI_DEVICE(0x1432, 0x7738) },
 417         { PCI_DEVICE(0x1432, 0x7748) },
 418         { PCI_DEVICE(0x1432, 0x7758) },
 419         { PCI_DEVICE(0x1432, 0x7768) },
 420         { PCI_DEVICE(0x1462, 0x891a) },
 421         { PCI_DEVICE(0x1a3b, 0x1059) },
 422 #ifdef CONFIG_RT2800PCI_RT3290
 423         { PCI_DEVICE(0x1814, 0x3290) },
 424 #endif
 425 #ifdef CONFIG_RT2800PCI_RT33XX
 426         { PCI_DEVICE(0x1814, 0x3390) },
 427 #endif
 428 #ifdef CONFIG_RT2800PCI_RT35XX
 429         { PCI_DEVICE(0x1432, 0x7711) },
 430         { PCI_DEVICE(0x1432, 0x7722) },
 431         { PCI_DEVICE(0x1814, 0x3060) },
 432         { PCI_DEVICE(0x1814, 0x3062) },
 433         { PCI_DEVICE(0x1814, 0x3562) },
 434         { PCI_DEVICE(0x1814, 0x3592) },
 435         { PCI_DEVICE(0x1814, 0x3593) },
 436         { PCI_DEVICE(0x1814, 0x359f) },
 437 #endif
 438 #ifdef CONFIG_RT2800PCI_RT53XX
 439         { PCI_DEVICE(0x1814, 0x5360) },
 440         { PCI_DEVICE(0x1814, 0x5362) },
 441         { PCI_DEVICE(0x1814, 0x5390) },
 442         { PCI_DEVICE(0x1814, 0x5392) },
 443         { PCI_DEVICE(0x1814, 0x539a) },
 444         { PCI_DEVICE(0x1814, 0x539b) },
 445         { PCI_DEVICE(0x1814, 0x539f) },
 446 #endif
 447         { 0, }
 448 };
 449
 450 MODULE_AUTHOR(DRV_PROJECT);
 451 MODULE_VERSION(DRV_VERSION);
 452 MODULE_DESCRIPTION("Ralink RT2800 PCI & PCMCIA Wireless LAN driver.");
 453 MODULE_SUPPORTED_DEVICE("Ralink RT2860 PCI & PCMCIA chipset based cards");
 454 MODULE_FIRMWARE(FIRMWARE_RT2860);
 455 MODULE_DEVICE_TABLE(pci, rt2800pci_device_table);
 456 MODULE_LICENSE("GPL");
 457
 458 static int rt2800pci_probe(struct pci_dev *pci_dev,
 459                            const struct pci_device_id *id)
 460 {
 461         return rt2x00pci_probe(pci_dev, &rt2800pci_ops);
 462 }
 463
 464 static struct pci_driver rt2800pci_driver = {
 465         .name           = KBUILD_MODNAME,
 466         .id_table       = rt2800pci_device_table,
 467         .probe          = rt2800pci_probe,
 468         .remove         = rt2x00pci_remove,
 469         .suspend        = rt2x00pci_suspend,
 470         .resume         = rt2x00pci_resume,
 471 };
 472
 473 module_pci_driver(rt2800pci_driver);