drivers/net/wireless/ralink/rt2x00/rt2800soc.c

   1 /*      Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
   2  *      Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
   3  *      Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
   4  *      Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
   5  *      Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
   6  *      Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com>
   7  *      Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
   8  *      Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com>
   9  *      <http://rt2x00.serialmonkey.com>
  10  *
  11  *      This program is free software; you can redistribute it and/or modify
  12  *      it under the terms of the GNU General Public License as published by
  13  *      the Free Software Foundation; either version 2 of the License, or
  14  *      (at your option) any later version.
  15  *
  16  *      This program is distributed in the hope that it will be useful,
  17  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  *      GNU General Public License for more details.
  20  *
  21  *      You should have received a copy of the GNU General Public License
  22  *      along with this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 /*      Module: rt2800soc
  26  *      Abstract: rt2800 WiSoC specific routines.
  27  */
  28
  29 #include <linux/etherdevice.h>
  30 #include <linux/init.h>
  31 #include <linux/kernel.h>
  32 #include <linux/module.h>
  33 #include <linux/platform_device.h>
  34
  35 #include "rt2x00.h"
  36 #include "rt2x00mmio.h"
  37 #include "rt2x00soc.h"
  38 #include "rt2800.h"
  39 #include "rt2800lib.h"
  40 #include "rt2800mmio.h"
  41
  42 /* Allow hardware encryption to be disabled. */
  43 static bool modparam_nohwcrypt;
  44 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, 0444);
  45 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  46
  47 static bool rt2800soc_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
  48 {
  49         return modparam_nohwcrypt;
  50 }
  51
  52 static void rt2800soc_disable_radio(struct rt2x00_dev *rt2x00dev)
  53 {
  54         rt2800_disable_radio(rt2x00dev);
  55         rt2x00mmio_register_write(rt2x00dev, PWR_PIN_CFG, 0);
  56         rt2x00mmio_register_write(rt2x00dev, TX_PIN_CFG, 0);
  57 }
  58
  59 static int rt2800soc_set_device_state(struct rt2x00_dev *rt2x00dev,
  60                                       enum dev_state state)
  61 {
  62         int retval = 0;
  63
  64         switch (state) {
  65         case STATE_RADIO_ON:
  66                 retval = rt2800mmio_enable_radio(rt2x00dev);
  67                 break;
  68
  69         case STATE_RADIO_OFF:
  70                 rt2800soc_disable_radio(rt2x00dev);
  71                 break;
  72
  73         case STATE_RADIO_IRQ_ON:
  74         case STATE_RADIO_IRQ_OFF:
  75                 rt2800mmio_toggle_irq(rt2x00dev, state);
  76                 break;
  77
  78         case STATE_DEEP_SLEEP:
  79         case STATE_SLEEP:
  80         case STATE_STANDBY:
  81         case STATE_AWAKE:
  82                 /* These states are not supported, but don't report an error */
  83                 retval = 0;
  84                 break;
  85
  86         default:
  87                 retval = -ENOTSUPP;
  88                 break;
  89         }
  90
  91         if (unlikely(retval))
  92                 rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n",
  93                            state, retval);
  94
  95         return retval;
  96 }
  97
  98 static int rt2800soc_read_eeprom(struct rt2x00_dev *rt2x00dev)
  99 {
 100         void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE);
 101
 102         if (!base_addr)
 103                 return -ENOMEM;
 104
 105         memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE);
 106
 107         iounmap(base_addr);
 108         return 0;
 109 }
 110
 111 /* Firmware functions */
 112 static char *rt2800soc_get_firmware_name(struct rt2x00_dev *rt2x00dev)
 113 {
 114         WARN_ON_ONCE(1);
 115         return NULL;
 116 }
 117
 118 static int rt2800soc_load_firmware(struct rt2x00_dev *rt2x00dev,
 119                                    const u8 *data, const size_t len)
 120 {
 121         WARN_ON_ONCE(1);
 122         return 0;
 123 }
 124
 125 static int rt2800soc_check_firmware(struct rt2x00_dev *rt2x00dev,
 126                                     const u8 *data, const size_t len)
 127 {
 128         WARN_ON_ONCE(1);
 129         return 0;
 130 }
 131
 132 static int rt2800soc_write_firmware(struct rt2x00_dev *rt2x00dev,
 133                                     const u8 *data, const size_t len)
 134 {
 135         WARN_ON_ONCE(1);
 136         return 0;
 137 }
 138
 139 static const struct ieee80211_ops rt2800soc_mac80211_ops = {
 140         .tx                     = rt2x00mac_tx,
 141         .start                  = rt2x00mac_start,
 142         .stop                   = rt2x00mac_stop,
 143         .add_interface          = rt2x00mac_add_interface,
 144         .remove_interface       = rt2x00mac_remove_interface,
 145         .config                 = rt2x00mac_config,
 146         .configure_filter       = rt2x00mac_configure_filter,
 147         .set_key                = rt2x00mac_set_key,
 148         .sw_scan_start          = rt2x00mac_sw_scan_start,
 149         .sw_scan_complete       = rt2x00mac_sw_scan_complete,
 150         .get_stats              = rt2x00mac_get_stats,
 151         .get_key_seq            = rt2800_get_key_seq,
 152         .set_rts_threshold      = rt2800_set_rts_threshold,
 153         .sta_add                = rt2800_sta_add,
 154         .sta_remove             = rt2800_sta_remove,
 155         .bss_info_changed       = rt2x00mac_bss_info_changed,
 156         .conf_tx                = rt2800_conf_tx,
 157         .get_tsf                = rt2800_get_tsf,
 158         .rfkill_poll            = rt2x00mac_rfkill_poll,
 159         .ampdu_action           = rt2800_ampdu_action,
 160         .flush                  = rt2x00mac_flush,
 161         .get_survey             = rt2800_get_survey,
 162         .get_ringparam          = rt2x00mac_get_ringparam,
 163         .tx_frames_pending      = rt2x00mac_tx_frames_pending,
 164 };
 165
 166 static const struct rt2800_ops rt2800soc_rt2800_ops = {
 167         .register_read          = rt2x00mmio_register_read,
 168         .register_read_lock     = rt2x00mmio_register_read, /* same for SoCs */
 169         .register_write         = rt2x00mmio_register_write,
 170         .register_write_lock    = rt2x00mmio_register_write, /* same for SoCs */
 171         .register_multiread     = rt2x00mmio_register_multiread,
 172         .register_multiwrite    = rt2x00mmio_register_multiwrite,
 173         .regbusy_read           = rt2x00mmio_regbusy_read,
 174         .read_eeprom            = rt2800soc_read_eeprom,
 175         .hwcrypt_disabled       = rt2800soc_hwcrypt_disabled,
 176         .drv_write_firmware     = rt2800soc_write_firmware,
 177         .drv_init_registers     = rt2800mmio_init_registers,
 178         .drv_get_txwi           = rt2800mmio_get_txwi,
 179 };
 180
 181 static const struct rt2x00lib_ops rt2800soc_rt2x00_ops = {
 182         .irq_handler            = rt2800mmio_interrupt,
 183         .txstatus_tasklet       = rt2800mmio_txstatus_tasklet,
 184         .pretbtt_tasklet        = rt2800mmio_pretbtt_tasklet,
 185         .tbtt_tasklet           = rt2800mmio_tbtt_tasklet,
 186         .rxdone_tasklet         = rt2800mmio_rxdone_tasklet,
 187         .autowake_tasklet       = rt2800mmio_autowake_tasklet,
 188         .probe_hw               = rt2800_probe_hw,
 189         .get_firmware_name      = rt2800soc_get_firmware_name,
 190         .check_firmware         = rt2800soc_check_firmware,
 191         .load_firmware          = rt2800soc_load_firmware,
 192         .initialize             = rt2x00mmio_initialize,
 193         .uninitialize           = rt2x00mmio_uninitialize,
 194         .get_entry_state        = rt2800mmio_get_entry_state,
 195         .clear_entry            = rt2800mmio_clear_entry,
 196         .set_device_state       = rt2800soc_set_device_state,
 197         .rfkill_poll            = rt2800_rfkill_poll,
 198         .link_stats             = rt2800_link_stats,
 199         .reset_tuner            = rt2800_reset_tuner,
 200         .link_tuner             = rt2800_link_tuner,
 201         .gain_calibration       = rt2800_gain_calibration,
 202         .vco_calibration        = rt2800_vco_calibration,
 203         .start_queue            = rt2800mmio_start_queue,
 204         .kick_queue             = rt2800mmio_kick_queue,
 205         .stop_queue             = rt2800mmio_stop_queue,
 206         .flush_queue            = rt2x00mmio_flush_queue,
 207         .write_tx_desc          = rt2800mmio_write_tx_desc,
 208         .write_tx_data          = rt2800_write_tx_data,
 209         .write_beacon           = rt2800_write_beacon,
 210         .clear_beacon           = rt2800_clear_beacon,
 211         .fill_rxdone            = rt2800mmio_fill_rxdone,
 212         .config_shared_key      = rt2800_config_shared_key,
 213         .config_pairwise_key    = rt2800_config_pairwise_key,
 214         .config_filter          = rt2800_config_filter,
 215         .config_intf            = rt2800_config_intf,
 216         .config_erp             = rt2800_config_erp,
 217         .config_ant             = rt2800_config_ant,
 218         .config                 = rt2800_config,
 219 };
 220
 221 static const struct rt2x00_ops rt2800soc_ops = {
 222         .name                   = KBUILD_MODNAME,
 223         .drv_data_size          = sizeof(struct rt2800_drv_data),
 224         .max_ap_intf            = 8,
 225         .eeprom_size            = EEPROM_SIZE,
 226         .rf_size                = RF_SIZE,
 227         .tx_queues              = NUM_TX_QUEUES,
 228         .queue_init             = rt2800mmio_queue_init,
 229         .lib                    = &rt2800soc_rt2x00_ops,
 230         .drv                    = &rt2800soc_rt2800_ops,
 231         .hw                     = &rt2800soc_mac80211_ops,
 232 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 233         .debugfs                = &rt2800_rt2x00debug,
 234 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 235 };
 236
 237 static int rt2800soc_probe(struct platform_device *pdev)
 238 {
 239         return rt2x00soc_probe(pdev, &rt2800soc_ops);
 240 }
 241
 242 static struct platform_driver rt2800soc_driver = {
 243         .driver         = {
 244                 .name           = "rt2800_wmac",
 245                 .mod_name       = KBUILD_MODNAME,
 246         },
 247         .probe          = rt2800soc_probe,
 248         .remove         = rt2x00soc_remove,
 249         .suspend        = rt2x00soc_suspend,
 250         .resume         = rt2x00soc_resume,
 251 };
 252
 253 module_platform_driver(rt2800soc_driver);
 254
 255 MODULE_AUTHOR(DRV_PROJECT);
 256 MODULE_VERSION(DRV_VERSION);
 257 MODULE_DESCRIPTION("Ralink WiSoC Wireless LAN driver.");
 258 MODULE_LICENSE("GPL");