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, S_IRUGO); 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 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 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(®, E2PROM_CSR_DATA_IN, !!eeprom->reg_data_in); 111 rt2x00_set_field32(®, E2PROM_CSR_DATA_OUT, !!eeprom->reg_data_out); 112 rt2x00_set_field32(®, E2PROM_CSR_DATA_CLOCK, 113 !!eeprom->reg_data_clock); 114 rt2x00_set_field32(®, 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 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(®, 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 = 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 }; 326 327 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 = 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 }; 383 384 static 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 */ 403 static 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 }; 447 448 MODULE_AUTHOR(DRV_PROJECT); 449 MODULE_VERSION(DRV_VERSION); 450 MODULE_DESCRIPTION("Ralink RT2800 PCI & PCMCIA Wireless LAN driver."); 451 MODULE_SUPPORTED_DEVICE("Ralink RT2860 PCI & PCMCIA chipset based cards"); 452 MODULE_FIRMWARE(FIRMWARE_RT2860); 453 MODULE_DEVICE_TABLE(pci, rt2800pci_device_table); 454 MODULE_LICENSE("GPL"); 455 456 static 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 } 461 462 static 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 }; 470 471 module_pci_driver(rt2800pci_driver); 472