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2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b 
 kernel/drivers/net/wireless/ralink/rt2x00/rt61pci.c
....@@ -1,19 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23 	Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
34 	<http://rt2x00.serialmonkey.com>
45 
5
-	This program is free software; you can redistribute it and/or modify
6
-	it under the terms of the GNU General Public License as published by
7
-	the Free Software Foundation; either version 2 of the License, or
8
-	(at your option) any later version.
9
-
10
-	This program is distributed in the hope that it will be useful,
11
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
12
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13
-	GNU General Public License for more details.
14
-
15
-	You should have received a copy of the GNU General Public License
16
-	along with this program; if not, see <http://www.gnu.org/licenses/>.
176  */
187 
198 /*
....@@ -321,97 +310,12 @@
321310 				     struct rt2x00lib_crypto *crypto,
322311 				     struct ieee80211_key_conf *key)
323312 {
324
-	struct hw_key_entry key_entry;
325
-	struct rt2x00_field32 field;
326
-	u32 mask;
327
-	u32 reg;
328
-
329
-	if (crypto->cmd == SET_KEY) {
330
-		/*
331
-		 * rt2x00lib can't determine the correct free
332
-		 * key_idx for shared keys. We have 1 register
333
-		 * with key valid bits. The goal is simple, read
334
-		 * the register, if that is full we have no slots
335
-		 * left.
336
-		 * Note that each BSS is allowed to have up to 4
337
-		 * shared keys, so put a mask over the allowed
338
-		 * entries.
339
-		 */
340
-		mask = (0xf << crypto->bssidx);
341
-
342
-		reg = rt2x00mmio_register_read(rt2x00dev, SEC_CSR0);
343
-		reg &= mask;
344
-
345
-		if (reg && reg == mask)
346
-			return -ENOSPC;
347
-
348
-		key->hw_key_idx += reg ? ffz(reg) : 0;
349
-
350
-		/*
351
-		 * Upload key to hardware
352
-		 */
353
-		memcpy(key_entry.key, crypto->key,
354
-		       sizeof(key_entry.key));
355
-		memcpy(key_entry.tx_mic, crypto->tx_mic,
356
-		       sizeof(key_entry.tx_mic));
357
-		memcpy(key_entry.rx_mic, crypto->rx_mic,
358
-		       sizeof(key_entry.rx_mic));
359
-
360
-		reg = SHARED_KEY_ENTRY(key->hw_key_idx);
361
-		rt2x00mmio_register_multiwrite(rt2x00dev, reg,
362
-					       &key_entry, sizeof(key_entry));
363
-
364
-		/*
365
-		 * The cipher types are stored over 2 registers.
366
-		 * bssidx 0 and 1 keys are stored in SEC_CSR1 and
367
-		 * bssidx 1 and 2 keys are stored in SEC_CSR5.
368
-		 * Using the correct defines correctly will cause overhead,
369
-		 * so just calculate the correct offset.
370
-		 */
371
-		if (key->hw_key_idx < 8) {
372
-			field.bit_offset = (3 * key->hw_key_idx);
373
-			field.bit_mask = 0x7 << field.bit_offset;
374
-
375
-			reg = rt2x00mmio_register_read(rt2x00dev, SEC_CSR1);
376
-			rt2x00_set_field32(&reg, field, crypto->cipher);
377
-			rt2x00mmio_register_write(rt2x00dev, SEC_CSR1, reg);
378
-		} else {
379
-			field.bit_offset = (3 * (key->hw_key_idx - 8));
380
-			field.bit_mask = 0x7 << field.bit_offset;
381
-
382
-			reg = rt2x00mmio_register_read(rt2x00dev, SEC_CSR5);
383
-			rt2x00_set_field32(&reg, field, crypto->cipher);
384
-			rt2x00mmio_register_write(rt2x00dev, SEC_CSR5, reg);
385
-		}
386
-
387
-		/*
388
-		 * The driver does not support the IV/EIV generation
389
-		 * in hardware. However it doesn't support the IV/EIV
390
-		 * inside the ieee80211 frame either, but requires it
391
-		 * to be provided separately for the descriptor.
392
-		 * rt2x00lib will cut the IV/EIV data out of all frames
393
-		 * given to us by mac80211, but we must tell mac80211
394
-		 * to generate the IV/EIV data.
395
-		 */
396
-		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
397
-	}
398
-
399313 	/*
400
-	 * SEC_CSR0 contains only single-bit fields to indicate
401
-	 * a particular key is valid. Because using the FIELD32()
402
-	 * defines directly will cause a lot of overhead, we use
403
-	 * a calculation to determine the correct bit directly.
314
+	 * Let the software handle the shared keys,
315
+	 * since the hardware decryption does not work reliably,
316
+	 * because the firmware does not know the key's keyidx.
404317 	 */
405
-	mask = 1 << key->hw_key_idx;
406
-
407
-	reg = rt2x00mmio_register_read(rt2x00dev, SEC_CSR0);
408
-	if (crypto->cmd == SET_KEY)
409
-		reg |= mask;
410
-	else if (crypto->cmd == DISABLE_KEY)
411
-		reg &= ~mask;
412
-	rt2x00mmio_register_write(rt2x00dev, SEC_CSR0, reg);
413
-
414
-	return 0;
318
+	return -EOPNOTSUPP;
415319 }
416320 
417321 static int rt61pci_config_pairwise_key(struct rt2x00_dev *rt2x00dev,
....@@ -2226,7 +2130,7 @@
22262130 			break;
22272131 		case 6: /* Failure, excessive retries */
22282132 			__set_bit(TXDONE_EXCESSIVE_RETRY, &txdesc.flags);
2229
-			/* Don't break, this is a failed frame! */
2133
+			fallthrough;	/* this is a failed frame! */
22302134 		default: /* Failure */
22312135 			__set_bit(TXDONE_FAILURE, &txdesc.flags);
22322136 		}
....@@ -2286,34 +2190,38 @@
22862190 	spin_unlock_irq(&rt2x00dev->irqmask_lock);
22872191 }
22882192 
2289
-static void rt61pci_txstatus_tasklet(unsigned long data)
2193
+static void rt61pci_txstatus_tasklet(struct tasklet_struct *t)
22902194 {
2291
-	struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
2195
+	struct rt2x00_dev *rt2x00dev = from_tasklet(rt2x00dev, t,
2196
+						    txstatus_tasklet);
2197
+
22922198 	rt61pci_txdone(rt2x00dev);
22932199 	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
22942200 		rt61pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_TXDONE);
22952201 }
22962202 
2297
-static void rt61pci_tbtt_tasklet(unsigned long data)
2203
+static void rt61pci_tbtt_tasklet(struct tasklet_struct *t)
22982204 {
2299
-	struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
2205
+	struct rt2x00_dev *rt2x00dev = from_tasklet(rt2x00dev, t, tbtt_tasklet);
23002206 	rt2x00lib_beacondone(rt2x00dev);
23012207 	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
23022208 		rt61pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_BEACON_DONE);
23032209 }
23042210 
2305
-static void rt61pci_rxdone_tasklet(unsigned long data)
2211
+static void rt61pci_rxdone_tasklet(struct tasklet_struct *t)
23062212 {
2307
-	struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
2213
+	struct rt2x00_dev *rt2x00dev = from_tasklet(rt2x00dev, t,
2214
+						    rxdone_tasklet);
23082215 	if (rt2x00mmio_rxdone(rt2x00dev))
23092216 		tasklet_schedule(&rt2x00dev->rxdone_tasklet);
23102217 	else if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
23112218 		rt61pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_RXDONE);
23122219 }
23132220 
2314
-static void rt61pci_autowake_tasklet(unsigned long data)
2221
+static void rt61pci_autowake_tasklet(struct tasklet_struct *t)
23152222 {
2316
-	struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
2223
+	struct rt2x00_dev *rt2x00dev = from_tasklet(rt2x00dev, t,
2224
+						    autowake_tasklet);
23172225 	rt61pci_wakeup(rt2x00dev);
23182226 	rt2x00mmio_register_write(rt2x00dev,
23192227 				  M2H_CMD_DONE_CSR, 0xffffffff);
....@@ -3049,7 +2957,6 @@
30492957 		break;
30502958 
30512959 	case QID_ATIM:
3052
-		/* fallthrough */
30532960 	default:
30542961 		BUG();
30552962 		break;
....@@ -3105,8 +3012,7 @@
31053012 	.id_table	= rt61pci_device_table,
31063013 	.probe		= rt61pci_probe,
31073014 	.remove		= rt2x00pci_remove,
3108
-	.suspend	= rt2x00pci_suspend,
3109
-	.resume		= rt2x00pci_resume,
3015
+	.driver.pm	= &rt2x00pci_pm_ops,
31103016 };
31113017 
31123018 module_pci_driver(rt61pci_driver);