1 // SPDX-License-Identifier: GPL-2.0-or-later 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 13 /* Module: rt2800soc 14 * Abstract: rt2800 WiSoC specific routines. 15 */ 16 17 #include <linux/etherdevice.h> 18 #include <linux/init.h> 19 #include <linux/kernel.h> 20 #include <linux/module.h> 21 #include <linux/of.h> 22 #include <linux/platform_device.h> 23 24 #include "rt2x00.h" 25 #include "rt2x00mmio.h" 26 #include "rt2800.h" 27 #include "rt2800lib.h" 28 #include "rt2800mmio.h" 29 30 /* Allow hardware encryption to be disabled. */ 31 static bool modparam_nohwcrypt; 32 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, 0444); 33 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); 34 35 static bool rt2800soc_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev) 36 { 37 return modparam_nohwcrypt; 38 } 39 40 static void rt2800soc_disable_radio(struct rt2x00_dev *rt2x00dev) 41 { 42 u32 reg; 43 44 rt2800_disable_radio(rt2x00dev); 45 rt2x00mmio_register_write(rt2x00dev, PWR_PIN_CFG, 0); 46 47 reg = 0; 48 if (rt2x00_rt(rt2x00dev, RT3883)) 49 rt2x00_set_field32(®, TX_PIN_CFG_RFTR_EN, 1); 50 51 rt2x00mmio_register_write(rt2x00dev, TX_PIN_CFG, reg); 52 } 53 54 static int rt2800soc_set_device_state(struct rt2x00_dev *rt2x00dev, 55 enum dev_state state) 56 { 57 int retval = 0; 58 59 switch (state) { 60 case STATE_RADIO_ON: 61 retval = rt2800mmio_enable_radio(rt2x00dev); 62 break; 63 64 case STATE_RADIO_OFF: 65 rt2800soc_disable_radio(rt2x00dev); 66 break; 67 68 case STATE_RADIO_IRQ_ON: 69 case STATE_RADIO_IRQ_OFF: 70 rt2800mmio_toggle_irq(rt2x00dev, state); 71 break; 72 73 case STATE_DEEP_SLEEP: 74 case STATE_SLEEP: 75 case STATE_STANDBY: 76 case STATE_AWAKE: 77 /* These states are not supported, but don't report an error */ 78 retval = 0; 79 break; 80 81 default: 82 retval = -ENOTSUPP; 83 break; 84 } 85 86 if (unlikely(retval)) 87 rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n", 88 state, retval); 89 90 return retval; 91 } 92 93 static int rt2800soc_read_eeprom(struct rt2x00_dev *rt2x00dev) 94 { 95 void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE); 96 97 if (!base_addr) 98 return -ENOMEM; 99 100 memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE); 101 102 iounmap(base_addr); 103 return 0; 104 } 105 106 /* Firmware functions */ 107 static char *rt2800soc_get_firmware_name(struct rt2x00_dev *rt2x00dev) 108 { 109 WARN_ON_ONCE(1); 110 return NULL; 111 } 112 113 static int rt2800soc_load_firmware(struct rt2x00_dev *rt2x00dev, 114 const u8 *data, const size_t len) 115 { 116 WARN_ON_ONCE(1); 117 return 0; 118 } 119 120 static int rt2800soc_check_firmware(struct rt2x00_dev *rt2x00dev, 121 const u8 *data, const size_t len) 122 { 123 WARN_ON_ONCE(1); 124 return 0; 125 } 126 127 static int rt2800soc_write_firmware(struct rt2x00_dev *rt2x00dev, 128 const u8 *data, const size_t len) 129 { 130 WARN_ON_ONCE(1); 131 return 0; 132 } 133 134 #ifdef CONFIG_PM 135 static int rt2800soc_suspend(struct platform_device *pdev, pm_message_t state) 136 { 137 struct ieee80211_hw *hw = platform_get_drvdata(pdev); 138 struct rt2x00_dev *rt2x00dev = hw->priv; 139 140 return rt2x00lib_suspend(rt2x00dev); 141 } 142 143 static int rt2800soc_resume(struct platform_device *pdev) 144 { 145 struct ieee80211_hw *hw = platform_get_drvdata(pdev); 146 struct rt2x00_dev *rt2x00dev = hw->priv; 147 148 return rt2x00lib_resume(rt2x00dev); 149 } 150 #endif /* CONFIG_PM */ 151 152 static const struct ieee80211_ops rt2800soc_mac80211_ops = { 153 .add_chanctx = ieee80211_emulate_add_chanctx, 154 .remove_chanctx = ieee80211_emulate_remove_chanctx, 155 .change_chanctx = ieee80211_emulate_change_chanctx, 156 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 157 .tx = rt2x00mac_tx, 158 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 159 .start = rt2x00mac_start, 160 .stop = rt2x00mac_stop, 161 .add_interface = rt2x00mac_add_interface, 162 .remove_interface = rt2x00mac_remove_interface, 163 .config = rt2x00mac_config, 164 .configure_filter = rt2x00mac_configure_filter, 165 .set_key = rt2x00mac_set_key, 166 .sw_scan_start = rt2x00mac_sw_scan_start, 167 .sw_scan_complete = rt2x00mac_sw_scan_complete, 168 .get_stats = rt2x00mac_get_stats, 169 .get_key_seq = rt2800_get_key_seq, 170 .set_rts_threshold = rt2800_set_rts_threshold, 171 .sta_add = rt2800_sta_add, 172 .sta_remove = rt2800_sta_remove, 173 .bss_info_changed = rt2x00mac_bss_info_changed, 174 .conf_tx = rt2800_conf_tx, 175 .get_tsf = rt2800_get_tsf, 176 .rfkill_poll = rt2x00mac_rfkill_poll, 177 .ampdu_action = rt2800_ampdu_action, 178 .flush = rt2x00mac_flush, 179 .get_survey = rt2800_get_survey, 180 .get_ringparam = rt2x00mac_get_ringparam, 181 .tx_frames_pending = rt2x00mac_tx_frames_pending, 182 .reconfig_complete = rt2x00mac_reconfig_complete, 183 }; 184 185 static const struct rt2800_ops rt2800soc_rt2800_ops = { 186 .register_read = rt2x00mmio_register_read, 187 .register_read_lock = rt2x00mmio_register_read, /* same for SoCs */ 188 .register_write = rt2x00mmio_register_write, 189 .register_write_lock = rt2x00mmio_register_write, /* same for SoCs */ 190 .register_multiread = rt2x00mmio_register_multiread, 191 .register_multiwrite = rt2x00mmio_register_multiwrite, 192 .regbusy_read = rt2x00mmio_regbusy_read, 193 .read_eeprom = rt2800soc_read_eeprom, 194 .hwcrypt_disabled = rt2800soc_hwcrypt_disabled, 195 .drv_write_firmware = rt2800soc_write_firmware, 196 .drv_init_registers = rt2800mmio_init_registers, 197 .drv_get_txwi = rt2800mmio_get_txwi, 198 .drv_get_dma_done = rt2800mmio_get_dma_done, 199 }; 200 201 static const struct rt2x00lib_ops rt2800soc_rt2x00_ops = { 202 .irq_handler = rt2800mmio_interrupt, 203 .txstatus_tasklet = rt2800mmio_txstatus_tasklet, 204 .pretbtt_tasklet = rt2800mmio_pretbtt_tasklet, 205 .tbtt_tasklet = rt2800mmio_tbtt_tasklet, 206 .rxdone_tasklet = rt2800mmio_rxdone_tasklet, 207 .autowake_tasklet = rt2800mmio_autowake_tasklet, 208 .probe_hw = rt2800mmio_probe_hw, 209 .get_firmware_name = rt2800soc_get_firmware_name, 210 .check_firmware = rt2800soc_check_firmware, 211 .load_firmware = rt2800soc_load_firmware, 212 .initialize = rt2x00mmio_initialize, 213 .uninitialize = rt2x00mmio_uninitialize, 214 .get_entry_state = rt2800mmio_get_entry_state, 215 .clear_entry = rt2800mmio_clear_entry, 216 .set_device_state = rt2800soc_set_device_state, 217 .rfkill_poll = rt2800_rfkill_poll, 218 .link_stats = rt2800_link_stats, 219 .reset_tuner = rt2800_reset_tuner, 220 .link_tuner = rt2800_link_tuner, 221 .gain_calibration = rt2800_gain_calibration, 222 .vco_calibration = rt2800_vco_calibration, 223 .watchdog = rt2800_watchdog, 224 .start_queue = rt2800mmio_start_queue, 225 .kick_queue = rt2800mmio_kick_queue, 226 .stop_queue = rt2800mmio_stop_queue, 227 .flush_queue = rt2800mmio_flush_queue, 228 .write_tx_desc = rt2800mmio_write_tx_desc, 229 .write_tx_data = rt2800_write_tx_data, 230 .write_beacon = rt2800_write_beacon, 231 .clear_beacon = rt2800_clear_beacon, 232 .fill_rxdone = rt2800mmio_fill_rxdone, 233 .config_shared_key = rt2800_config_shared_key, 234 .config_pairwise_key = rt2800_config_pairwise_key, 235 .config_filter = rt2800_config_filter, 236 .config_intf = rt2800_config_intf, 237 .config_erp = rt2800_config_erp, 238 .config_ant = rt2800_config_ant, 239 .config = rt2800_config, 240 .pre_reset_hw = rt2800_pre_reset_hw, 241 }; 242 243 static const struct rt2x00_ops rt2800soc_ops = { 244 .name = KBUILD_MODNAME, 245 .drv_data_size = sizeof(struct rt2800_drv_data), 246 .max_ap_intf = 8, 247 .eeprom_size = EEPROM_SIZE, 248 .rf_size = RF_SIZE, 249 .tx_queues = NUM_TX_QUEUES, 250 .queue_init = rt2800mmio_queue_init, 251 .lib = &rt2800soc_rt2x00_ops, 252 .drv = &rt2800soc_rt2800_ops, 253 .hw = &rt2800soc_mac80211_ops, 254 #ifdef CONFIG_RT2X00_LIB_DEBUGFS 255 .debugfs = &rt2800_rt2x00debug, 256 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ 257 }; 258 259 static int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops) 260 { 261 struct rt2x00_dev *rt2x00dev; 262 struct ieee80211_hw *hw; 263 void __iomem *mem; 264 struct clk *clk; 265 __le16 *eeprom; 266 int retval; 267 u32 *rf; 268 int irq; 269 270 mem = devm_platform_ioremap_resource(pdev, 0); 271 if (IS_ERR(mem)) 272 return PTR_ERR(mem); 273 274 irq = platform_get_irq(pdev, 0); 275 if (irq < 0) 276 return irq; 277 278 clk = devm_clk_get_optional(&pdev->dev, NULL); 279 if (IS_ERR(clk)) 280 return PTR_ERR(clk); 281 282 eeprom = devm_kzalloc(&pdev->dev, ops->eeprom_size, GFP_KERNEL); 283 if (!eeprom) 284 return -ENOMEM; 285 286 rf = devm_kzalloc(&pdev->dev, ops->rf_size, GFP_KERNEL); 287 if (!rf) 288 return -ENOMEM; 289 290 hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw); 291 if (!hw) 292 return dev_err_probe(&pdev->dev, -ENOMEM, "Failed to allocate hardware"); 293 294 platform_set_drvdata(pdev, hw); 295 296 rt2x00dev = hw->priv; 297 rt2x00dev->dev = &pdev->dev; 298 rt2x00dev->ops = ops; 299 rt2x00dev->hw = hw; 300 rt2x00dev->irq = irq; 301 rt2x00dev->clk = clk; 302 rt2x00dev->eeprom = eeprom; 303 rt2x00dev->rf = rf; 304 rt2x00dev->name = pdev->dev.driver->name; 305 rt2x00dev->csr.base = mem; 306 307 rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC); 308 309 retval = rt2x00lib_probe_dev(rt2x00dev); 310 if (retval) 311 goto exit_free_device; 312 313 return 0; 314 315 exit_free_device: 316 ieee80211_free_hw(hw); 317 318 return retval; 319 } 320 321 static int rt2800soc_probe(struct platform_device *pdev) 322 { 323 return rt2x00soc_probe(pdev, &rt2800soc_ops); 324 } 325 326 static void rt2800soc_remove(struct platform_device *pdev) 327 { 328 struct ieee80211_hw *hw = platform_get_drvdata(pdev); 329 struct rt2x00_dev *rt2x00dev = hw->priv; 330 331 /* 332 * Free all allocated data. 333 */ 334 rt2x00lib_remove_dev(rt2x00dev); 335 ieee80211_free_hw(hw); 336 } 337 338 static const struct of_device_id rt2880_wmac_match[] = { 339 { .compatible = "ralink,rt2880-wifi" }, 340 {}, 341 }; 342 MODULE_DEVICE_TABLE(of, rt2880_wmac_match); 343 344 static struct platform_driver rt2800soc_driver = { 345 .driver = { 346 .name = "rt2800_wmac", 347 .of_match_table = rt2880_wmac_match, 348 }, 349 .probe = rt2800soc_probe, 350 .remove = rt2800soc_remove, 351 #ifdef CONFIG_PM 352 .suspend = rt2800soc_suspend, 353 .resume = rt2800soc_resume, 354 #endif 355 }; 356 357 module_platform_driver(rt2800soc_driver); 358 359 MODULE_AUTHOR(DRV_PROJECT); 360 MODULE_VERSION(DRV_VERSION); 361 MODULE_DESCRIPTION("Ralink WiSoC Wireless LAN driver."); 362 MODULE_LICENSE("GPL"); 363