Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

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

  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, &reg);
 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, &reg);
 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(&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 
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, &reg);
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(&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  */
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_tkip_seq           = rt2800_get_tkip_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 

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