linux/drivers/net/wireless/ralink/rt2x00/rt2800pci.c
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   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 */
  51static bool modparam_nohwcrypt = false;
  52module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  53MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  54
  55static bool rt2800pci_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
  56{
  57        return modparam_nohwcrypt;
  58}
  59
  60static 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
  90static 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
 105static 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
 120static 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
 153static int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
 154{
 155        return rt2800_efuse_detect(rt2x00dev);
 156}
 157
 158static 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 */
 166static 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
 177static 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 */
 207static 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
 228static 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
 247static 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 */
 288static 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
 300static 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                = rt2x00mac_sta_add,
 315        .sta_remove             = rt2x00mac_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
 327static 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
 342static 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            = rt2x00mmio_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        .sta_add                = rt2800_sta_add,
 381        .sta_remove             = rt2800_sta_remove,
 382};
 383
 384static const struct rt2x00_ops rt2800pci_ops = {
 385        .name                   = KBUILD_MODNAME,
 386        .drv_data_size          = sizeof(struct rt2800_drv_data),
 387        .max_ap_intf            = 8,
 388        .eeprom_size            = EEPROM_SIZE,
 389        .rf_size                = RF_SIZE,
 390        .tx_queues              = NUM_TX_QUEUES,
 391        .queue_init             = rt2800mmio_queue_init,
 392        .lib                    = &rt2800pci_rt2x00_ops,
 393        .drv                    = &rt2800pci_rt2800_ops,
 394        .hw                     = &rt2800pci_mac80211_ops,
 395#ifdef CONFIG_RT2X00_LIB_DEBUGFS
 396        .debugfs                = &rt2800_rt2x00debug,
 397#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 398};
 399
 400/*
 401 * RT2800pci module information.
 402 */
 403static const struct pci_device_id rt2800pci_device_table[] = {
 404        { PCI_DEVICE(0x1814, 0x0601) },
 405        { PCI_DEVICE(0x1814, 0x0681) },
 406        { PCI_DEVICE(0x1814, 0x0701) },
 407        { PCI_DEVICE(0x1814, 0x0781) },
 408        { PCI_DEVICE(0x1814, 0x3090) },
 409        { PCI_DEVICE(0x1814, 0x3091) },
 410        { PCI_DEVICE(0x1814, 0x3092) },
 411        { PCI_DEVICE(0x1432, 0x7708) },
 412        { PCI_DEVICE(0x1432, 0x7727) },
 413        { PCI_DEVICE(0x1432, 0x7728) },
 414        { PCI_DEVICE(0x1432, 0x7738) },
 415        { PCI_DEVICE(0x1432, 0x7748) },
 416        { PCI_DEVICE(0x1432, 0x7758) },
 417        { PCI_DEVICE(0x1432, 0x7768) },
 418        { PCI_DEVICE(0x1462, 0x891a) },
 419        { PCI_DEVICE(0x1a3b, 0x1059) },
 420#ifdef CONFIG_RT2800PCI_RT3290
 421        { PCI_DEVICE(0x1814, 0x3290) },
 422#endif
 423#ifdef CONFIG_RT2800PCI_RT33XX
 424        { PCI_DEVICE(0x1814, 0x3390) },
 425#endif
 426#ifdef CONFIG_RT2800PCI_RT35XX
 427        { PCI_DEVICE(0x1432, 0x7711) },
 428        { PCI_DEVICE(0x1432, 0x7722) },
 429        { PCI_DEVICE(0x1814, 0x3060) },
 430        { PCI_DEVICE(0x1814, 0x3062) },
 431        { PCI_DEVICE(0x1814, 0x3562) },
 432        { PCI_DEVICE(0x1814, 0x3592) },
 433        { PCI_DEVICE(0x1814, 0x3593) },
 434        { PCI_DEVICE(0x1814, 0x359f) },
 435#endif
 436#ifdef CONFIG_RT2800PCI_RT53XX
 437        { PCI_DEVICE(0x1814, 0x5360) },
 438        { PCI_DEVICE(0x1814, 0x5362) },
 439        { PCI_DEVICE(0x1814, 0x5390) },
 440        { PCI_DEVICE(0x1814, 0x5392) },
 441        { PCI_DEVICE(0x1814, 0x539a) },
 442        { PCI_DEVICE(0x1814, 0x539b) },
 443        { PCI_DEVICE(0x1814, 0x539f) },
 444#endif
 445        { 0, }
 446};
 447
 448MODULE_AUTHOR(DRV_PROJECT);
 449MODULE_VERSION(DRV_VERSION);
 450MODULE_DESCRIPTION("Ralink RT2800 PCI & PCMCIA Wireless LAN driver.");
 451MODULE_SUPPORTED_DEVICE("Ralink RT2860 PCI & PCMCIA chipset based cards");
 452MODULE_FIRMWARE(FIRMWARE_RT2860);
 453MODULE_DEVICE_TABLE(pci, rt2800pci_device_table);
 454MODULE_LICENSE("GPL");
 455
 456static int rt2800pci_probe(struct pci_dev *pci_dev,
 457                           const struct pci_device_id *id)
 458{
 459        return rt2x00pci_probe(pci_dev, &rt2800pci_ops);
 460}
 461
 462static struct pci_driver rt2800pci_driver = {
 463        .name           = KBUILD_MODNAME,
 464        .id_table       = rt2800pci_device_table,
 465        .probe          = rt2800pci_probe,
 466        .remove         = rt2x00pci_remove,
 467        .suspend        = rt2x00pci_suspend,
 468        .resume         = rt2x00pci_resume,
 469};
 470
 471module_pci_driver(rt2800pci_driver);
 472