drivers/net/wireless/ralink/rt2x00/rt2800pci.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3         Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
   4         Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
   5         Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
   6         Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
   7         Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
   8         Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com>
   9         Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
  10         Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com>
  11         <http://rt2x00.serialmonkey.com>
  12
  13  */
  14
  15 /*
  16         Module: rt2800pci
  17         Abstract: rt2800pci device specific routines.
  18         Supported chipsets: RT2800E & RT2800ED.
  19  */
  20
  21 #include <linux/delay.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/init.h>
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/pci.h>
  27 #include <linux/eeprom_93cx6.h>
  28
  29 #include "rt2x00.h"
  30 #include "rt2x00mmio.h"
  31 #include "rt2x00pci.h"
  32 #include "rt2800lib.h"
  33 #include "rt2800mmio.h"
  34 #include "rt2800.h"
  35 #include "rt2800pci.h"
  36
  37 /*
  38  * Allow hardware encryption to be disabled.
  39  */
  40 static bool modparam_nohwcrypt = false;
  41 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, 0444);
  42 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  43
  44 static bool rt2800pci_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
  45 {
  46         return modparam_nohwcrypt;
  47 }
  48
  49 static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
  50 {
  51         unsigned int i;
  52         u32 reg;
  53
  54         /*
  55          * SOC devices don't support MCU requests.
  56          */
  57         if (rt2x00_is_soc(rt2x00dev))
  58                 return;
  59
  60         for (i = 0; i < 200; i++) {
  61                 reg = rt2x00mmio_register_read(rt2x00dev, H2M_MAILBOX_CID);
  62
  63                 if ((rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD0) == token) ||
  64                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD1) == token) ||
  65                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD2) == token) ||
  66                     (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD3) == token))
  67                         break;
  68
  69                 udelay(REGISTER_BUSY_DELAY);
  70         }
  71
  72         if (i == 200)
  73                 rt2x00_err(rt2x00dev, "MCU request failed, no response from hardware\n");
  74
  75         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
  76         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
  77 }
  78
  79 static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
  80 {
  81         struct rt2x00_dev *rt2x00dev = eeprom->data;
  82         u32 reg;
  83
  84         reg = rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR);
  85
  86         eeprom->reg_data_in = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_IN);
  87         eeprom->reg_data_out = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_OUT);
  88         eeprom->reg_data_clock =
  89             !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_CLOCK);
  90         eeprom->reg_chip_select =
  91             !!rt2x00_get_field32(reg, E2PROM_CSR_CHIP_SELECT);
  92 }
  93
  94 static void rt2800pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
  95 {
  96         struct rt2x00_dev *rt2x00dev = eeprom->data;
  97         u32 reg = 0;
  98
  99         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_IN, !!eeprom->reg_data_in);
 100         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_OUT, !!eeprom->reg_data_out);
 101         rt2x00_set_field32(&reg, E2PROM_CSR_DATA_CLOCK,
 102                            !!eeprom->reg_data_clock);
 103         rt2x00_set_field32(&reg, E2PROM_CSR_CHIP_SELECT,
 104                            !!eeprom->reg_chip_select);
 105
 106         rt2x00mmio_register_write(rt2x00dev, E2PROM_CSR, reg);
 107 }
 108
 109 static int rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
 110 {
 111         struct eeprom_93cx6 eeprom;
 112         u32 reg;
 113
 114         reg = rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR);
 115
 116         eeprom.data = rt2x00dev;
 117         eeprom.register_read = rt2800pci_eepromregister_read;
 118         eeprom.register_write = rt2800pci_eepromregister_write;
 119         switch (rt2x00_get_field32(reg, E2PROM_CSR_TYPE))
 120         {
 121         case 0:
 122                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 123                 break;
 124         case 1:
 125                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 126                 break;
 127         default:
 128                 eeprom.width = PCI_EEPROM_WIDTH_93C86;
 129                 break;
 130         }
 131         eeprom.reg_data_in = 0;
 132         eeprom.reg_data_out = 0;
 133         eeprom.reg_data_clock = 0;
 134         eeprom.reg_chip_select = 0;
 135
 136         eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
 137                                EEPROM_SIZE / sizeof(u16));
 138
 139         return 0;
 140 }
 141
 142 static int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
 143 {
 144         return rt2800_efuse_detect(rt2x00dev);
 145 }
 146
 147 static inline int rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
 148 {
 149         return rt2800_read_eeprom_efuse(rt2x00dev);
 150 }
 151
 152 /*
 153  * Firmware functions
 154  */
 155 static char *rt2800pci_get_firmware_name(struct rt2x00_dev *rt2x00dev)
 156 {
 157         /*
 158          * Chip rt3290 use specific 4KB firmware named rt3290.bin.
 159          */
 160         if (rt2x00_rt(rt2x00dev, RT3290))
 161                 return FIRMWARE_RT3290;
 162         else
 163                 return FIRMWARE_RT2860;
 164 }
 165
 166 static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
 167                                     const u8 *data, const size_t len)
 168 {
 169         u32 reg;
 170
 171         /*
 172          * enable Host program ram write selection
 173          */
 174         reg = 0;
 175         rt2x00_set_field32(&reg, PBF_SYS_CTRL_HOST_RAM_WRITE, 1);
 176         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, reg);
 177
 178         /*
 179          * Write firmware to device.
 180          */
 181         rt2x00mmio_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
 182                                        data, len);
 183
 184         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000);
 185         rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001);
 186
 187         rt2x00mmio_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
 188         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
 189
 190         return 0;
 191 }
 192
 193 /*
 194  * Device state switch handlers.
 195  */
 196 static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 197 {
 198         int retval;
 199
 200         retval = rt2800mmio_enable_radio(rt2x00dev);
 201         if (retval)
 202                 return retval;
 203
 204         /* After resume MCU_BOOT_SIGNAL will trash these. */
 205         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
 206         rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
 207
 208         rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_RADIO_OFF, 0xff, 0x02);
 209         rt2800pci_mcu_status(rt2x00dev, TOKEN_RADIO_OFF);
 210
 211         rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP, 0, 0);
 212         rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
 213
 214         return retval;
 215 }
 216
 217 static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
 218                                enum dev_state state)
 219 {
 220         if (state == STATE_AWAKE) {
 221                 rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP,
 222                                    0, 0x02);
 223                 rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
 224         } else if (state == STATE_SLEEP) {
 225                 rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS,
 226                                           0xffffffff);
 227                 rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID,
 228                                           0xffffffff);
 229                 rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_SLEEP,
 230                                    0xff, 0x01);
 231         }
 232
 233         return 0;
 234 }
 235
 236 static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 237                                       enum dev_state state)
 238 {
 239         int retval = 0;
 240
 241         switch (state) {
 242         case STATE_RADIO_ON:
 243                 retval = rt2800pci_enable_radio(rt2x00dev);
 244                 break;
 245         case STATE_RADIO_OFF:
 246                 /*
 247                  * After the radio has been disabled, the device should
 248                  * be put to sleep for powersaving.
 249                  */
 250                 rt2800pci_set_state(rt2x00dev, STATE_SLEEP);
 251                 break;
 252         case STATE_RADIO_IRQ_ON:
 253         case STATE_RADIO_IRQ_OFF:
 254                 rt2800mmio_toggle_irq(rt2x00dev, state);
 255                 break;
 256         case STATE_DEEP_SLEEP:
 257         case STATE_SLEEP:
 258         case STATE_STANDBY:
 259         case STATE_AWAKE:
 260                 retval = rt2800pci_set_state(rt2x00dev, state);
 261                 break;
 262         default:
 263                 retval = -ENOTSUPP;
 264                 break;
 265         }
 266
 267         if (unlikely(retval))
 268                 rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n",
 269                            state, retval);
 270
 271         return retval;
 272 }
 273
 274 /*
 275  * Device probe functions.
 276  */
 277 static int rt2800pci_read_eeprom(struct rt2x00_dev *rt2x00dev)
 278 {
 279         int retval;
 280
 281         if (rt2800pci_efuse_detect(rt2x00dev))
 282                 retval = rt2800pci_read_eeprom_efuse(rt2x00dev);
 283         else
 284                 retval = rt2800pci_read_eeprom_pci(rt2x00dev);
 285
 286         return retval;
 287 }
 288
 289 static const struct ieee80211_ops rt2800pci_mac80211_ops = {
 290         .tx                     = rt2x00mac_tx,
 291         .start                  = rt2x00mac_start,
 292         .stop                   = rt2x00mac_stop,
 293         .add_interface          = rt2x00mac_add_interface,
 294         .remove_interface       = rt2x00mac_remove_interface,
 295         .config                 = rt2x00mac_config,
 296         .configure_filter       = rt2x00mac_configure_filter,
 297         .set_key                = rt2x00mac_set_key,
 298         .sw_scan_start          = rt2x00mac_sw_scan_start,
 299         .sw_scan_complete       = rt2x00mac_sw_scan_complete,
 300         .get_stats              = rt2x00mac_get_stats,
 301         .get_key_seq            = rt2800_get_key_seq,
 302         .set_rts_threshold      = rt2800_set_rts_threshold,
 303         .sta_add                = rt2800_sta_add,
 304         .sta_remove             = rt2800_sta_remove,
 305         .bss_info_changed       = rt2x00mac_bss_info_changed,
 306         .conf_tx                = rt2800_conf_tx,
 307         .get_tsf                = rt2800_get_tsf,
 308         .rfkill_poll            = rt2x00mac_rfkill_poll,
 309         .ampdu_action           = rt2800_ampdu_action,
 310         .flush                  = rt2x00mac_flush,
 311         .get_survey             = rt2800_get_survey,
 312         .get_ringparam          = rt2x00mac_get_ringparam,
 313         .tx_frames_pending      = rt2x00mac_tx_frames_pending,
 314         .reconfig_complete      = rt2x00mac_reconfig_complete,
 315 };
 316
 317 static const struct rt2800_ops rt2800pci_rt2800_ops = {
 318         .register_read          = rt2x00mmio_register_read,
 319         .register_read_lock     = rt2x00mmio_register_read, /* same for PCI */
 320         .register_write         = rt2x00mmio_register_write,
 321         .register_write_lock    = rt2x00mmio_register_write, /* same for PCI */
 322         .register_multiread     = rt2x00mmio_register_multiread,
 323         .register_multiwrite    = rt2x00mmio_register_multiwrite,
 324         .regbusy_read           = rt2x00mmio_regbusy_read,
 325         .read_eeprom            = rt2800pci_read_eeprom,
 326         .hwcrypt_disabled       = rt2800pci_hwcrypt_disabled,
 327         .drv_write_firmware     = rt2800pci_write_firmware,
 328         .drv_init_registers     = rt2800mmio_init_registers,
 329         .drv_get_txwi           = rt2800mmio_get_txwi,
 330         .drv_get_dma_done       = rt2800mmio_get_dma_done,
 331 };
 332
 333 static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
 334         .irq_handler            = rt2800mmio_interrupt,
 335         .txstatus_tasklet       = rt2800mmio_txstatus_tasklet,
 336         .pretbtt_tasklet        = rt2800mmio_pretbtt_tasklet,
 337         .tbtt_tasklet           = rt2800mmio_tbtt_tasklet,
 338         .rxdone_tasklet         = rt2800mmio_rxdone_tasklet,
 339         .autowake_tasklet       = rt2800mmio_autowake_tasklet,
 340         .probe_hw               = rt2800mmio_probe_hw,
 341         .get_firmware_name      = rt2800pci_get_firmware_name,
 342         .check_firmware         = rt2800_check_firmware,
 343         .load_firmware          = rt2800_load_firmware,
 344         .initialize             = rt2x00mmio_initialize,
 345         .uninitialize           = rt2x00mmio_uninitialize,
 346         .get_entry_state        = rt2800mmio_get_entry_state,
 347         .clear_entry            = rt2800mmio_clear_entry,
 348         .set_device_state       = rt2800pci_set_device_state,
 349         .rfkill_poll            = rt2800_rfkill_poll,
 350         .link_stats             = rt2800_link_stats,
 351         .reset_tuner            = rt2800_reset_tuner,
 352         .link_tuner             = rt2800_link_tuner,
 353         .gain_calibration       = rt2800_gain_calibration,
 354         .vco_calibration        = rt2800_vco_calibration,
 355         .watchdog               = rt2800_watchdog,
 356         .start_queue            = rt2800mmio_start_queue,
 357         .kick_queue             = rt2800mmio_kick_queue,
 358         .stop_queue             = rt2800mmio_stop_queue,
 359         .flush_queue            = rt2800mmio_flush_queue,
 360         .write_tx_desc          = rt2800mmio_write_tx_desc,
 361         .write_tx_data          = rt2800_write_tx_data,
 362         .write_beacon           = rt2800_write_beacon,
 363         .clear_beacon           = rt2800_clear_beacon,
 364         .fill_rxdone            = rt2800mmio_fill_rxdone,
 365         .config_shared_key      = rt2800_config_shared_key,
 366         .config_pairwise_key    = rt2800_config_pairwise_key,
 367         .config_filter          = rt2800_config_filter,
 368         .config_intf            = rt2800_config_intf,
 369         .config_erp             = rt2800_config_erp,
 370         .config_ant             = rt2800_config_ant,
 371         .config                 = rt2800_config,
 372         .pre_reset_hw           = rt2800_pre_reset_hw,
 373 };
 374
 375 static const struct rt2x00_ops rt2800pci_ops = {
 376         .name                   = KBUILD_MODNAME,
 377         .drv_data_size          = sizeof(struct rt2800_drv_data),
 378         .max_ap_intf            = 8,
 379         .eeprom_size            = EEPROM_SIZE,
 380         .rf_size                = RF_SIZE,
 381         .tx_queues              = NUM_TX_QUEUES,
 382         .queue_init             = rt2800mmio_queue_init,
 383         .lib                    = &rt2800pci_rt2x00_ops,
 384         .drv                    = &rt2800pci_rt2800_ops,
 385         .hw                     = &rt2800pci_mac80211_ops,
 386 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 387         .debugfs                = &rt2800_rt2x00debug,
 388 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 389 };
 390
 391 /*
 392  * RT2800pci module information.
 393  */
 394 static const struct pci_device_id rt2800pci_device_table[] = {
 395         { PCI_DEVICE(0x1814, 0x0601) },
 396         { PCI_DEVICE(0x1814, 0x0681) },
 397         { PCI_DEVICE(0x1814, 0x0701) },
 398         { PCI_DEVICE(0x1814, 0x0781) },
 399         { PCI_DEVICE(0x1814, 0x3090) },
 400         { PCI_DEVICE(0x1814, 0x3091) },
 401         { PCI_DEVICE(0x1814, 0x3092) },
 402         { PCI_DEVICE(0x1432, 0x7708) },
 403         { PCI_DEVICE(0x1432, 0x7727) },
 404         { PCI_DEVICE(0x1432, 0x7728) },
 405         { PCI_DEVICE(0x1432, 0x7738) },
 406         { PCI_DEVICE(0x1432, 0x7748) },
 407         { PCI_DEVICE(0x1432, 0x7758) },
 408         { PCI_DEVICE(0x1432, 0x7768) },
 409         { PCI_DEVICE(0x1462, 0x891a) },
 410         { PCI_DEVICE(0x1a3b, 0x1059) },
 411 #ifdef CONFIG_RT2800PCI_RT3290
 412         { PCI_DEVICE(0x1814, 0x3290) },
 413 #endif
 414 #ifdef CONFIG_RT2800PCI_RT33XX
 415         { PCI_DEVICE(0x1814, 0x3390) },
 416 #endif
 417 #ifdef CONFIG_RT2800PCI_RT35XX
 418         { PCI_DEVICE(0x1432, 0x7711) },
 419         { PCI_DEVICE(0x1432, 0x7722) },
 420         { PCI_DEVICE(0x1814, 0x3060) },
 421         { PCI_DEVICE(0x1814, 0x3062) },
 422         { PCI_DEVICE(0x1814, 0x3562) },
 423         { PCI_DEVICE(0x1814, 0x3592) },
 424         { PCI_DEVICE(0x1814, 0x3593) },
 425         { PCI_DEVICE(0x1814, 0x359f) },
 426 #endif
 427 #ifdef CONFIG_RT2800PCI_RT53XX
 428         { PCI_DEVICE(0x1814, 0x5360) },
 429         { PCI_DEVICE(0x1814, 0x5362) },
 430         { PCI_DEVICE(0x1814, 0x5390) },
 431         { PCI_DEVICE(0x1814, 0x5392) },
 432         { PCI_DEVICE(0x1814, 0x539a) },
 433         { PCI_DEVICE(0x1814, 0x539b) },
 434         { PCI_DEVICE(0x1814, 0x539f) },
 435 #endif
 436         { 0, }
 437 };
 438
 439 MODULE_AUTHOR(DRV_PROJECT);
 440 MODULE_VERSION(DRV_VERSION);
 441 MODULE_DESCRIPTION("Ralink RT2800 PCI & PCMCIA Wireless LAN driver.");
 442 MODULE_FIRMWARE(FIRMWARE_RT2860);
 443 MODULE_DEVICE_TABLE(pci, rt2800pci_device_table);
 444 MODULE_LICENSE("GPL");
 445
 446 static int rt2800pci_probe(struct pci_dev *pci_dev,
 447                            const struct pci_device_id *id)
 448 {
 449         return rt2x00pci_probe(pci_dev, &rt2800pci_ops);
 450 }
 451
 452 static struct pci_driver rt2800pci_driver = {
 453         .name           = KBUILD_MODNAME,
 454         .id_table       = rt2800pci_device_table,
 455         .probe          = rt2800pci_probe,
 456         .remove         = rt2x00pci_remove,
 457         .driver.pm      = &rt2x00pci_pm_ops,
 458 };
 459
 460 module_pci_driver(rt2800pci_driver);