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2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b 
 kernel/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23 	Copyright (C) 2010 Willow Garage <http://www.willowgarage.com>
34 	Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
....@@ -7,18 +8,6 @@
78 	Copyright (C) 2009 Axel Kollhofer <rain_maker@root-forum.org>
89 	<http://rt2x00.serialmonkey.com>
910 
10
-	This program is free software; you can redistribute it and/or modify
11
-	it under the terms of the GNU General Public License as published by
12
-	the Free Software Foundation; either version 2 of the License, or
13
-	(at your option) any later version.
14
-
15
-	This program is distributed in the hope that it will be useful,
16
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
17
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18
-	GNU General Public License for more details.
19
-
20
-	You should have received a copy of the GNU General Public License
21
-	along with this program; if not, see <http://www.gnu.org/licenses/>.
2211  */
2312 
2413 /*
....@@ -100,51 +89,6 @@
10089 	}
10190 }
10291 
103
-/*
104
- * test if there is an entry in any TX queue for which DMA is done
105
- * but the TX status has not been returned yet
106
- */
107
-static bool rt2800usb_txstatus_pending(struct rt2x00_dev *rt2x00dev)
108
-{
109
-	struct data_queue *queue;
110
-
111
-	tx_queue_for_each(rt2x00dev, queue) {
112
-		if (rt2x00queue_get_entry(queue, Q_INDEX_DMA_DONE) !=
113
-		    rt2x00queue_get_entry(queue, Q_INDEX_DONE))
114
-			return true;
115
-	}
116
-	return false;
117
-}
118
-
119
-static inline bool rt2800usb_entry_txstatus_timeout(struct queue_entry *entry)
120
-{
121
-	bool tout;
122
-
123
-	if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
124
-		return false;
125
-
126
-	tout = time_after(jiffies, entry->last_action + msecs_to_jiffies(500));
127
-	if (unlikely(tout))
128
-		rt2x00_dbg(entry->queue->rt2x00dev,
129
-			   "TX status timeout for entry %d in queue %d\n",
130
-			   entry->entry_idx, entry->queue->qid);
131
-	return tout;
132
-
133
-}
134
-
135
-static bool rt2800usb_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
136
-{
137
-	struct data_queue *queue;
138
-	struct queue_entry *entry;
139
-
140
-	tx_queue_for_each(rt2x00dev, queue) {
141
-		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
142
-		if (rt2800usb_entry_txstatus_timeout(entry))
143
-			return true;
144
-	}
145
-	return false;
146
-}
147
-
14892 #define TXSTATUS_READ_INTERVAL 1000000
14993 
15094 static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
....@@ -171,10 +115,10 @@
171115 	}
172116 
173117 	/* Check if there is any entry that timedout waiting on TX status */
174
-	if (rt2800usb_txstatus_timeout(rt2x00dev))
118
+	if (rt2800_txstatus_timeout(rt2x00dev))
175119 		queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
176120 
177
-	if (rt2800usb_txstatus_pending(rt2x00dev)) {
121
+	if (rt2800_txstatus_pending(rt2x00dev)) {
178122 		/* Read register after 1 ms */
179123 		hrtimer_start(&rt2x00dev->txstatus_timer,
180124 			      TXSTATUS_READ_INTERVAL,
....@@ -189,7 +133,7 @@
189133 	 * clear_bit someone could do rt2x00usb_interrupt_txdone, so recheck
190134 	 * here again if status reading is needed.
191135 	 */
192
-	if (rt2800usb_txstatus_pending(rt2x00dev) &&
136
+	if (rt2800_txstatus_pending(rt2x00dev) &&
193137 	    !test_and_set_bit(TX_STATUS_READING, &rt2x00dev->flags))
194138 		return true;
195139 	else
....@@ -435,6 +379,14 @@
435379 	return retval;
436380 }
437381 
382
+static unsigned int rt2800usb_get_dma_done(struct data_queue *queue)
383
+{
384
+	struct queue_entry *entry;
385
+
386
+	entry = rt2x00queue_get_entry(queue, Q_INDEX_DMA_DONE);
387
+	return entry->entry_idx;
388
+}
389
+
438390 /*
439391  * TX descriptor initialization
440392  */
....@@ -501,130 +453,24 @@
501453 /*
502454  * TX control handlers
503455  */
504
-static bool rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
505
-{
506
-	__le32 *txwi;
507
-	u32 word;
508
-	int wcid, ack, pid;
509
-	int tx_wcid, tx_ack, tx_pid, is_agg;
510
-
511
-	/*
512
-	 * This frames has returned with an IO error,
513
-	 * so the status report is not intended for this
514
-	 * frame.
515
-	 */
516
-	if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
517
-		return false;
518
-
519
-	wcid	= rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
520
-	ack	= rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
521
-	pid	= rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
522
-	is_agg	= rt2x00_get_field32(reg, TX_STA_FIFO_TX_AGGRE);
523
-
524
-	/*
525
-	 * Validate if this TX status report is intended for
526
-	 * this entry by comparing the WCID/ACK/PID fields.
527
-	 */
528
-	txwi = rt2800usb_get_txwi(entry);
529
-
530
-	word = rt2x00_desc_read(txwi, 1);
531
-	tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
532
-	tx_ack  = rt2x00_get_field32(word, TXWI_W1_ACK);
533
-	tx_pid  = rt2x00_get_field32(word, TXWI_W1_PACKETID);
534
-
535
-	if (wcid != tx_wcid || ack != tx_ack || (!is_agg && pid != tx_pid)) {
536
-		rt2x00_dbg(entry->queue->rt2x00dev,
537
-			   "TX status report missed for queue %d entry %d\n",
538
-			   entry->queue->qid, entry->entry_idx);
539
-		return false;
540
-	}
541
-
542
-	return true;
543
-}
544
-
545
-static void rt2800usb_txdone(struct rt2x00_dev *rt2x00dev)
546
-{
547
-	struct data_queue *queue;
548
-	struct queue_entry *entry;
549
-	u32 reg;
550
-	u8 qid;
551
-	bool match;
552
-
553
-	while (kfifo_get(&rt2x00dev->txstatus_fifo, &reg)) {
554
-		/*
555
-		 * TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus qid is
556
-		 * guaranteed to be one of the TX QIDs .
557
-		 */
558
-		qid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_QUEUE);
559
-		queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
560
-
561
-		if (unlikely(rt2x00queue_empty(queue))) {
562
-			rt2x00_dbg(rt2x00dev, "Got TX status for an empty queue %u, dropping\n",
563
-				   qid);
564
-			break;
565
-		}
566
-
567
-		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
568
-
569
-		if (unlikely(test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
570
-			     !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))) {
571
-			rt2x00_warn(rt2x00dev, "Data pending for entry %u in queue %u\n",
572
-				    entry->entry_idx, qid);
573
-			break;
574
-		}
575
-
576
-		match = rt2800usb_txdone_entry_check(entry, reg);
577
-		rt2800_txdone_entry(entry, reg, rt2800usb_get_txwi(entry), match);
578
-	}
579
-}
580
-
581
-static void rt2800usb_txdone_nostatus(struct rt2x00_dev *rt2x00dev)
582
-{
583
-	struct data_queue *queue;
584
-	struct queue_entry *entry;
585
-
586
-	/*
587
-	 * Process any trailing TX status reports for IO failures,
588
-	 * we loop until we find the first non-IO error entry. This
589
-	 * can either be a frame which is free, is being uploaded,
590
-	 * or has completed the upload but didn't have an entry
591
-	 * in the TX_STAT_FIFO register yet.
592
-	 */
593
-	tx_queue_for_each(rt2x00dev, queue) {
594
-		while (!rt2x00queue_empty(queue)) {
595
-			entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
596
-
597
-			if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
598
-			    !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
599
-				break;
600
-
601
-			if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags) ||
602
-			    rt2800usb_entry_txstatus_timeout(entry))
603
-				rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
604
-			else
605
-				break;
606
-		}
607
-	}
608
-}
609
-
610456 static void rt2800usb_work_txdone(struct work_struct *work)
611457 {
612458 	struct rt2x00_dev *rt2x00dev =
613459 	    container_of(work, struct rt2x00_dev, txdone_work);
614460 
615461 	while (!kfifo_is_empty(&rt2x00dev->txstatus_fifo) ||
616
-	       rt2800usb_txstatus_timeout(rt2x00dev)) {
462
+	       rt2800_txstatus_timeout(rt2x00dev)) {
617463 
618
-		rt2800usb_txdone(rt2x00dev);
464
+		rt2800_txdone(rt2x00dev, UINT_MAX);
619465 
620
-		rt2800usb_txdone_nostatus(rt2x00dev);
466
+		rt2800_txdone_nostatus(rt2x00dev);
621467 
622468 		/*
623469 		 * The hw may delay sending the packet after DMA complete
624470 		 * if the medium is busy, thus the TX_STA_FIFO entry is
625471 		 * also delayed -> use a timer to retrieve it.
626472 		 */
627
-		if (rt2800usb_txstatus_pending(rt2x00dev))
473
+		if (rt2800_txstatus_pending(rt2x00dev))
628474 			rt2800usb_async_read_tx_status(rt2x00dev);
629475 	}
630476 }
....@@ -697,13 +543,13 @@
697543 		 * stripped it from the frame. Signal this to mac80211.
698544 		 */
699545 		rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
700
-        
546
+
701547 		if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS) {
702548 			rxdesc->flags |= RX_FLAG_DECRYPTED;
703549 		} else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC) {
704550 			/*
705551 			 * In order to check the Michael Mic, the packet must have
706
-			 * been decrypted.  Mac80211 doesnt check the MMIC failure 
552
+			 * been decrypted.  Mac80211 doesnt check the MMIC failure
707553 			 * flag to initiate MMIC countermeasures if the decoded flag
708554 			 * has not been set.
709555 			 */
....@@ -808,6 +654,7 @@
808654 	.get_survey		= rt2800_get_survey,
809655 	.get_ringparam		= rt2x00mac_get_ringparam,
810656 	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
657
+	.reconfig_complete	= rt2x00mac_reconfig_complete,
811658 };
812659 
813660 static const struct rt2800_ops rt2800usb_rt2800_ops = {
....@@ -823,6 +670,7 @@
823670 	.drv_write_firmware	= rt2800usb_write_firmware,
824671 	.drv_init_registers	= rt2800usb_init_registers,
825672 	.drv_get_txwi		= rt2800usb_get_txwi,
673
+	.drv_get_dma_done	= rt2800usb_get_dma_done,
826674 };
827675 
828676 static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
....@@ -840,6 +688,7 @@
840688 	.link_tuner		= rt2800_link_tuner,
841689 	.gain_calibration	= rt2800_gain_calibration,
842690 	.vco_calibration	= rt2800_vco_calibration,
691
+	.watchdog		= rt2800_watchdog,
843692 	.start_queue		= rt2800usb_start_queue,
844693 	.kick_queue		= rt2x00usb_kick_queue,
845694 	.stop_queue		= rt2800usb_stop_queue,
....@@ -858,6 +707,7 @@
858707 	.config_erp		= rt2800_config_erp,
859708 	.config_ant		= rt2800_config_ant,
860709 	.config			= rt2800_config,
710
+	.pre_reset_hw		= rt2800_pre_reset_hw,
861711 };
862712 
863713 static void rt2800usb_queue_init(struct data_queue *queue)
....@@ -896,7 +746,6 @@
896746 		break;
897747 
898748 	case QID_ATIM:
899
-		/* fallthrough */
900749 	default:
901750 		BUG();
902751 		break;
....@@ -1237,6 +1086,7 @@
12371086 	{ USB_DEVICE(0x0846, 0x9013) },
12381087 	{ USB_DEVICE(0x0846, 0x9019) },
12391088 	/* Planex */
1089
+	{ USB_DEVICE(0x2019, 0xed14) },
12401090 	{ USB_DEVICE(0x2019, 0xed19) },
12411091 	/* Ralink */
12421092 	{ USB_DEVICE(0x148f, 0x3573) },