Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
// SPDX-License-Identifier: GPL-2.0-or-later
/*
	Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
	Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
	Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
	Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
	Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
	Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com>
	Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
	Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com>
	<http://rt2x00.serialmonkey.com>

 */

/*
	Module: rt2800pci
	Abstract: rt2800pci device specific routines.
	Supported chipsets: RT2800E & RT2800ED.
 */

#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/eeprom_93cx6.h>

#include "rt2x00.h"
#include "rt2x00mmio.h"
#include "rt2x00pci.h"
#include "rt2800lib.h"
#include "rt2800mmio.h"
#include "rt2800.h"
#include "rt2800pci.h"

/*
 * Allow hardware encryption to be disabled.
 */
static bool modparam_nohwcrypt = false;
module_param_named(nohwcrypt, modparam_nohwcrypt, bool, 0444);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");

static bool rt2800pci_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
{
	return modparam_nohwcrypt;
}

static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
{
	unsigned int i;
	u32 reg;

	/*
	 * SOC devices don't support MCU requests.
	 */
	if (rt2x00_is_soc(rt2x00dev))
		return;

	for (i = 0; i < 200; i++) {
		reg = rt2x00mmio_register_read(rt2x00dev, H2M_MAILBOX_CID);

		if ((rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD0) == token) ||
		    (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD1) == token) ||
		    (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD2) == token) ||
		    (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD3) == token))
			break;

		udelay(REGISTER_BUSY_DELAY);
	}

	if (i == 200)
		rt2x00_err(rt2x00dev, "MCU request failed, no response from hardware\n");

	rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
	rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
}

static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
{
	struct rt2x00_dev *rt2x00dev = eeprom->data;
	u32 reg;

	reg = rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR);

	eeprom->reg_data_in = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_IN);
	eeprom->reg_data_out = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_OUT);
	eeprom->reg_data_clock =
	    !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_CLOCK);
	eeprom->reg_chip_select =
	    !!rt2x00_get_field32(reg, E2PROM_CSR_CHIP_SELECT);
}

static void rt2800pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
{
	struct rt2x00_dev *rt2x00dev = eeprom->data;
	u32 reg = 0;

	rt2x00_set_field32(&reg, E2PROM_CSR_DATA_IN, !!eeprom->reg_data_in);
	rt2x00_set_field32(&reg, E2PROM_CSR_DATA_OUT, !!eeprom->reg_data_out);
	rt2x00_set_field32(&reg, E2PROM_CSR_DATA_CLOCK,
			   !!eeprom->reg_data_clock);
	rt2x00_set_field32(&reg, E2PROM_CSR_CHIP_SELECT,
			   !!eeprom->reg_chip_select);

	rt2x00mmio_register_write(rt2x00dev, E2PROM_CSR, reg);
}

static int rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
{
	struct eeprom_93cx6 eeprom;
	u32 reg;

	reg = rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR);

	eeprom.data = rt2x00dev;
	eeprom.register_read = rt2800pci_eepromregister_read;
	eeprom.register_write = rt2800pci_eepromregister_write;
	switch (rt2x00_get_field32(reg, E2PROM_CSR_TYPE))
	{
	case 0:
		eeprom.width = PCI_EEPROM_WIDTH_93C46;
		break;
	case 1:
		eeprom.width = PCI_EEPROM_WIDTH_93C66;
		break;
	default:
		eeprom.width = PCI_EEPROM_WIDTH_93C86;
		break;
	}
	eeprom.reg_data_in = 0;
	eeprom.reg_data_out = 0;
	eeprom.reg_data_clock = 0;
	eeprom.reg_chip_select = 0;

	eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
			       EEPROM_SIZE / sizeof(u16));

	return 0;
}

static int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
{
	return rt2800_efuse_detect(rt2x00dev);
}

static inline int rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
{
	return rt2800_read_eeprom_efuse(rt2x00dev);
}

/*
 * Firmware functions
 */
static char *rt2800pci_get_firmware_name(struct rt2x00_dev *rt2x00dev)
{
	/*
	 * Chip rt3290 use specific 4KB firmware named rt3290.bin.
	 */
	if (rt2x00_rt(rt2x00dev, RT3290))
		return FIRMWARE_RT3290;
	else
		return FIRMWARE_RT2860;
}

static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
				    const u8 *data, const size_t len)
{
	u32 reg;

	/*
	 * enable Host program ram write selection
	 */
	reg = 0;
	rt2x00_set_field32(&reg, PBF_SYS_CTRL_HOST_RAM_WRITE, 1);
	rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, reg);

	/*
	 * Write firmware to device.
	 */
	rt2x00mmio_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
				       data, len);

	rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000);
	rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001);

	rt2x00mmio_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
	rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);

	return 0;
}

/*
 * Device state switch handlers.
 */
static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
{
	int retval;

	retval = rt2800mmio_enable_radio(rt2x00dev);
	if (retval)
		return retval;

	/* After resume MCU_BOOT_SIGNAL will trash these. */
	rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
	rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);

	rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_RADIO_OFF, 0xff, 0x02);
	rt2800pci_mcu_status(rt2x00dev, TOKEN_RADIO_OFF);

	rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP, 0, 0);
	rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);

	return retval;
}

static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
			       enum dev_state state)
{
	if (state == STATE_AWAKE) {
		rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKEUP,
				   0, 0x02);
		rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP);
	} else if (state == STATE_SLEEP) {
		rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS,
					  0xffffffff);
		rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID,
					  0xffffffff);
		rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_SLEEP,
				   0xff, 0x01);
	}

	return 0;
}

static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
				      enum dev_state state)
{
	int retval = 0;

	switch (state) {
	case STATE_RADIO_ON:
		retval = rt2800pci_enable_radio(rt2x00dev);
		break;
	case STATE_RADIO_OFF:
		/*
		 * After the radio has been disabled, the device should
		 * be put to sleep for powersaving.
		 */
		rt2800pci_set_state(rt2x00dev, STATE_SLEEP);
		break;
	case STATE_RADIO_IRQ_ON:
	case STATE_RADIO_IRQ_OFF:
		rt2800mmio_toggle_irq(rt2x00dev, state);
		break;
	case STATE_DEEP_SLEEP:
	case STATE_SLEEP:
	case STATE_STANDBY:
	case STATE_AWAKE:
		retval = rt2800pci_set_state(rt2x00dev, state);
		break;
	default:
		retval = -ENOTSUPP;
		break;
	}

	if (unlikely(retval))
		rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n",
			   state, retval);

	return retval;
}

/*
 * Device probe functions.
 */
static int rt2800pci_read_eeprom(struct rt2x00_dev *rt2x00dev)
{
	int retval;

	if (rt2800pci_efuse_detect(rt2x00dev))
		retval = rt2800pci_read_eeprom_efuse(rt2x00dev);
	else
		retval = rt2800pci_read_eeprom_pci(rt2x00dev);

	return retval;
}

static const struct ieee80211_ops rt2800pci_mac80211_ops = {
	.tx			= rt2x00mac_tx,
	.start			= rt2x00mac_start,
	.stop			= rt2x00mac_stop,
	.add_interface		= rt2x00mac_add_interface,
	.remove_interface	= rt2x00mac_remove_interface,
	.config			= rt2x00mac_config,
	.configure_filter	= rt2x00mac_configure_filter,
	.set_key		= rt2x00mac_set_key,
	.sw_scan_start		= rt2x00mac_sw_scan_start,
	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
	.get_stats		= rt2x00mac_get_stats,
	.get_key_seq		= rt2800_get_key_seq,
	.set_rts_threshold	= rt2800_set_rts_threshold,
	.sta_add		= rt2800_sta_add,
	.sta_remove		= rt2800_sta_remove,
	.bss_info_changed	= rt2x00mac_bss_info_changed,
	.conf_tx		= rt2800_conf_tx,
	.get_tsf		= rt2800_get_tsf,
	.rfkill_poll		= rt2x00mac_rfkill_poll,
	.ampdu_action		= rt2800_ampdu_action,
	.flush			= rt2x00mac_flush,
	.get_survey		= rt2800_get_survey,
	.get_ringparam		= rt2x00mac_get_ringparam,
	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
};

static const struct rt2800_ops rt2800pci_rt2800_ops = {
	.register_read		= rt2x00mmio_register_read,
	.register_read_lock	= rt2x00mmio_register_read, /* same for PCI */
	.register_write		= rt2x00mmio_register_write,
	.register_write_lock	= rt2x00mmio_register_write, /* same for PCI */
	.register_multiread	= rt2x00mmio_register_multiread,
	.register_multiwrite	= rt2x00mmio_register_multiwrite,
	.regbusy_read		= rt2x00mmio_regbusy_read,
	.read_eeprom		= rt2800pci_read_eeprom,
	.hwcrypt_disabled	= rt2800pci_hwcrypt_disabled,
	.drv_write_firmware	= rt2800pci_write_firmware,
	.drv_init_registers	= rt2800mmio_init_registers,
	.drv_get_txwi		= rt2800mmio_get_txwi,
	.drv_get_dma_done	= rt2800mmio_get_dma_done,
};

static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
	.irq_handler		= rt2800mmio_interrupt,
	.txstatus_tasklet	= rt2800mmio_txstatus_tasklet,
	.pretbtt_tasklet	= rt2800mmio_pretbtt_tasklet,
	.tbtt_tasklet		= rt2800mmio_tbtt_tasklet,
	.rxdone_tasklet		= rt2800mmio_rxdone_tasklet,
	.autowake_tasklet	= rt2800mmio_autowake_tasklet,
	.probe_hw		= rt2800mmio_probe_hw,
	.get_firmware_name	= rt2800pci_get_firmware_name,
	.check_firmware		= rt2800_check_firmware,
	.load_firmware		= rt2800_load_firmware,
	.initialize		= rt2x00mmio_initialize,
	.uninitialize		= rt2x00mmio_uninitialize,
	.get_entry_state	= rt2800mmio_get_entry_state,
	.clear_entry		= rt2800mmio_clear_entry,
	.set_device_state	= rt2800pci_set_device_state,
	.rfkill_poll		= rt2800_rfkill_poll,
	.link_stats		= rt2800_link_stats,
	.reset_tuner		= rt2800_reset_tuner,
	.link_tuner		= rt2800_link_tuner,
	.gain_calibration	= rt2800_gain_calibration,
	.vco_calibration	= rt2800_vco_calibration,
	.watchdog		= rt2800_watchdog,
	.start_queue		= rt2800mmio_start_queue,
	.kick_queue		= rt2800mmio_kick_queue,
	.stop_queue		= rt2800mmio_stop_queue,
	.flush_queue		= rt2800mmio_flush_queue,
	.write_tx_desc		= rt2800mmio_write_tx_desc,
	.write_tx_data		= rt2800_write_tx_data,
	.write_beacon		= rt2800_write_beacon,
	.clear_beacon		= rt2800_clear_beacon,
	.fill_rxdone		= rt2800mmio_fill_rxdone,
	.config_shared_key	= rt2800_config_shared_key,
	.config_pairwise_key	= rt2800_config_pairwise_key,
	.config_filter		= rt2800_config_filter,
	.config_intf		= rt2800_config_intf,
	.config_erp		= rt2800_config_erp,
	.config_ant		= rt2800_config_ant,
	.config			= rt2800_config,
	.pre_reset_hw		= rt2800_pre_reset_hw,
};

static const struct rt2x00_ops rt2800pci_ops = {
	.name			= KBUILD_MODNAME,
	.drv_data_size		= sizeof(struct rt2800_drv_data),
	.max_ap_intf		= 8,
	.eeprom_size		= EEPROM_SIZE,
	.rf_size		= RF_SIZE,
	.tx_queues		= NUM_TX_QUEUES,
	.queue_init		= rt2800mmio_queue_init,
	.lib			= &rt2800pci_rt2x00_ops,
	.drv			= &rt2800pci_rt2800_ops,
	.hw			= &rt2800pci_mac80211_ops,
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
	.debugfs		= &rt2800_rt2x00debug,
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
};

/*
 * RT2800pci module information.
 */
static const struct pci_device_id rt2800pci_device_table[] = {
	{ PCI_DEVICE(0x1814, 0x0601) },
	{ PCI_DEVICE(0x1814, 0x0681) },
	{ PCI_DEVICE(0x1814, 0x0701) },
	{ PCI_DEVICE(0x1814, 0x0781) },
	{ PCI_DEVICE(0x1814, 0x3090) },
	{ PCI_DEVICE(0x1814, 0x3091) },
	{ PCI_DEVICE(0x1814, 0x3092) },
	{ PCI_DEVICE(0x1432, 0x7708) },
	{ PCI_DEVICE(0x1432, 0x7727) },
	{ PCI_DEVICE(0x1432, 0x7728) },
	{ PCI_DEVICE(0x1432, 0x7738) },
	{ PCI_DEVICE(0x1432, 0x7748) },
	{ PCI_DEVICE(0x1432, 0x7758) },
	{ PCI_DEVICE(0x1432, 0x7768) },
	{ PCI_DEVICE(0x1462, 0x891a) },
	{ PCI_DEVICE(0x1a3b, 0x1059) },
#ifdef CONFIG_RT2800PCI_RT3290
	{ PCI_DEVICE(0x1814, 0x3290) },
#endif
#ifdef CONFIG_RT2800PCI_RT33XX
	{ PCI_DEVICE(0x1814, 0x3390) },
#endif
#ifdef CONFIG_RT2800PCI_RT35XX
	{ PCI_DEVICE(0x1432, 0x7711) },
	{ PCI_DEVICE(0x1432, 0x7722) },
	{ PCI_DEVICE(0x1814, 0x3060) },
	{ PCI_DEVICE(0x1814, 0x3062) },
	{ PCI_DEVICE(0x1814, 0x3562) },
	{ PCI_DEVICE(0x1814, 0x3592) },
	{ PCI_DEVICE(0x1814, 0x3593) },
	{ PCI_DEVICE(0x1814, 0x359f) },
#endif
#ifdef CONFIG_RT2800PCI_RT53XX
	{ PCI_DEVICE(0x1814, 0x5360) },
	{ PCI_DEVICE(0x1814, 0x5362) },
	{ PCI_DEVICE(0x1814, 0x5390) },
	{ PCI_DEVICE(0x1814, 0x5392) },
	{ PCI_DEVICE(0x1814, 0x539a) },
	{ PCI_DEVICE(0x1814, 0x539b) },
	{ PCI_DEVICE(0x1814, 0x539f) },
#endif
	{ 0, }
};

MODULE_AUTHOR(DRV_PROJECT);
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("Ralink RT2800 PCI & PCMCIA Wireless LAN driver.");
MODULE_SUPPORTED_DEVICE("Ralink RT2860 PCI & PCMCIA chipset based cards");
MODULE_FIRMWARE(FIRMWARE_RT2860);
MODULE_DEVICE_TABLE(pci, rt2800pci_device_table);
MODULE_LICENSE("GPL");

static int rt2800pci_probe(struct pci_dev *pci_dev,
			   const struct pci_device_id *id)
{
	return rt2x00pci_probe(pci_dev, &rt2800pci_ops);
}

static struct pci_driver rt2800pci_driver = {
	.name		= KBUILD_MODNAME,
	.id_table	= rt2800pci_device_table,
	.probe		= rt2800pci_probe,
	.remove		= rt2x00pci_remove,
	.suspend	= rt2x00pci_suspend,
	.resume		= rt2x00pci_resume,
};

module_pci_driver(rt2800pci_driver);