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2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f 
 kernel/drivers/net/wireless/broadcom/b43legacy/main.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *
34  *  Broadcom B43legacy wireless driver
....@@ -12,21 +13,6 @@
1213  *  Some parts of the code in this file are derived from the ipw2200
1314  *  driver  Copyright(c) 2003 - 2004 Intel Corporation.
1415 
15
- *  This program is free software; you can redistribute it and/or modify
16
- *  it under the terms of the GNU General Public License as published by
17
- *  the Free Software Foundation; either version 2 of the License, or
18
- *  (at your option) any later version.
19
- *
20
- *  This program is distributed in the hope that it will be useful,
21
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
22
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23
- *  GNU General Public License for more details.
24
- *
25
- *  You should have received a copy of the GNU General Public License
26
- *  along with this program; see the file COPYING.  If not, write to
27
- *  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
28
- *  Boston, MA 02110-1301, USA.
29
- *
3016  */
3117 
3218 #include <linux/delay.h>
....@@ -264,7 +250,6 @@
264250 		val = swab32(val);
265251 
266252 	b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset);
267
-	mmiowb();
268253 	b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val);
269254 }
270255 
....@@ -341,14 +326,11 @@
341326 		if (offset & 0x0003) {
342327 			/* Unaligned access */
343328 			b43legacy_shm_control_word(dev, routing, offset >> 2);
344
-			mmiowb();
345329 			b43legacy_write16(dev,
346330 					  B43legacy_MMIO_SHM_DATA_UNALIGNED,
347331 					  (value >> 16) & 0xffff);
348
-			mmiowb();
349332 			b43legacy_shm_control_word(dev, routing,
350333 						   (offset >> 2) + 1);
351
-			mmiowb();
352334 			b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA,
353335 					  value & 0xffff);
354336 			return;
....@@ -356,7 +338,6 @@
356338 		offset >>= 2;
357339 	}
358340 	b43legacy_shm_control_word(dev, routing, offset);
359
-	mmiowb();
360341 	b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value);
361342 }
362343 
....@@ -368,7 +349,6 @@
368349 		if (offset & 0x0003) {
369350 			/* Unaligned access */
370351 			b43legacy_shm_control_word(dev, routing, offset >> 2);
371
-			mmiowb();
372352 			b43legacy_write16(dev,
373353 					  B43legacy_MMIO_SHM_DATA_UNALIGNED,
374354 					  value);
....@@ -377,7 +357,6 @@
377357 		offset >>= 2;
378358 	}
379359 	b43legacy_shm_control_word(dev, routing, offset);
380
-	mmiowb();
381360 	b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value);
382361 }
383362 
....@@ -471,7 +450,6 @@
471450 	status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
472451 	status |= B43legacy_MACCTL_TBTTHOLD;
473452 	b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
474
-	mmiowb();
475453 }
476454 
477455 static void b43legacy_time_unlock(struct b43legacy_wldev *dev)
....@@ -494,10 +472,8 @@
494472 		u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
495473 
496474 		b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0);
497
-		mmiowb();
498475 		b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH,
499476 				    hi);
500
-		mmiowb();
501477 		b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW,
502478 				    lo);
503479 	} else {
....@@ -507,13 +483,9 @@
507483 		u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
508484 
509485 		b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0);
510
-		mmiowb();
511486 		b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3);
512
-		mmiowb();
513487 		b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2);
514
-		mmiowb();
515488 		b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1);
516
-		mmiowb();
517489 		b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0);
518490 	}
519491 }
....@@ -619,7 +591,7 @@
619591 }
620592 
621593 /* DummyTransmission function, as documented on
622
- * http://bcm-specs.sipsolutions.net/DummyTransmission
594
+ * https://bcm-specs.sipsolutions.net/DummyTransmission
623595  */
624596 void b43legacy_dummy_transmission(struct b43legacy_wldev *dev)
625597 {
....@@ -1250,7 +1222,6 @@
12501222 		/* The handler might have updated the IRQ mask. */
12511223 		b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
12521224 				  dev->irq_mask);
1253
-		mmiowb();
12541225 		spin_unlock_irq(&wl->irq_lock);
12551226 	}
12561227 	mutex_unlock(&wl->mutex);
....@@ -1304,9 +1275,9 @@
13041275 }
13051276 
13061277 /* Interrupt handler bottom-half */
1307
-static void b43legacy_interrupt_tasklet(unsigned long data)
1278
+static void b43legacy_interrupt_tasklet(struct tasklet_struct *t)
13081279 {
1309
-	struct b43legacy_wldev *dev = (struct b43legacy_wldev *)data;
1280
+	struct b43legacy_wldev *dev = from_tasklet(dev, t, isr_tasklet);
13101281 	u32 reason;
13111282 	u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
13121283 	u32 merged_dma_reason = 0;
....@@ -1347,7 +1318,6 @@
13471318 			       dma_reason[2], dma_reason[3],
13481319 			       dma_reason[4], dma_reason[5]);
13491320 			b43legacy_controller_restart(dev, "DMA error");
1350
-			mmiowb();
13511321 			spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
13521322 			return;
13531323 		}
....@@ -1370,8 +1340,9 @@
13701340 		handle_irq_beacon(dev);
13711341 	if (reason & B43legacy_IRQ_PMQ)
13721342 		handle_irq_pmq(dev);
1373
-	if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK)
1343
+	if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK) {
13741344 		;/*TODO*/
1345
+	}
13751346 	if (reason & B43legacy_IRQ_NOISESAMPLE_OK)
13761347 		handle_irq_noise(dev);
13771348 
....@@ -1397,7 +1368,6 @@
13971368 		handle_irq_transmit_status(dev);
13981369 
13991370 	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1400
-	mmiowb();
14011371 	spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
14021372 }
14031373 
....@@ -1489,7 +1459,6 @@
14891459 	dev->irq_reason = reason;
14901460 	tasklet_schedule(&dev->isr_tasklet);
14911461 out:
1492
-	mmiowb();
14931462 	spin_unlock(&dev->wl->irq_lock);
14941463 
14951464 	return ret;
....@@ -1509,8 +1478,8 @@
15091478 
15101479 static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl)
15111480 {
1512
-	b43legacyerr(wl, "You must go to http://wireless.kernel.org/en/users/"
1513
-		     "Drivers/b43#devicefirmware "
1481
+	b43legacyerr(wl, "You must go to https://wireless.wiki.kernel.org/en/"
1482
+		     "users/Drivers/b43#devicefirmware "
15141483 		     "and download the correct firmware (version 3).\n");
15151484 }
15161485 
....@@ -1569,7 +1538,7 @@
15691538 		size = be32_to_cpu(hdr->size);
15701539 		if (size != (*fw)->size - sizeof(struct b43legacy_fw_header))
15711540 			goto err_format;
1572
-		/* fallthrough */
1541
+		fallthrough;
15731542 	case B43legacy_FW_TYPE_IV:
15741543 		if (hdr->ver != 1)
15751544 			goto err_format;
....@@ -1902,7 +1871,7 @@
19021871 }
19031872 
19041873 /* Initialize the GPIOs
1905
- * http://bcm-specs.sipsolutions.net/GPIO
1874
+ * https://bcm-specs.sipsolutions.net/GPIO
19061875  */
19071876 static int b43legacy_gpio_init(struct b43legacy_wldev *dev)
19081877 {
....@@ -1992,7 +1961,7 @@
19921961 	}
19931962 }
19941963 
1995
-/* http://bcm-specs.sipsolutions.net/SuspendMAC */
1964
+/* https://bcm-specs.sipsolutions.net/SuspendMAC */
19961965 void b43legacy_mac_suspend(struct b43legacy_wldev *dev)
19971966 {
19981967 	int i;
....@@ -2108,7 +2077,7 @@
21082077 		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1);
21092078 		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1);
21102079 		b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1);
2111
-		/* fallthrough */
2080
+		fallthrough;
21122081 	case B43legacy_PHYTYPE_B:
21132082 		b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0);
21142083 		b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0);
....@@ -2173,7 +2142,7 @@
21732142 }
21742143 
21752144 /* Initialize the chip
2176
- * http://bcm-specs.sipsolutions.net/ChipInit
2145
+ * https://bcm-specs.sipsolutions.net/ChipInit
21772146  */
21782147 static int b43legacy_chip_init(struct b43legacy_wldev *dev)
21792148 {
....@@ -2612,7 +2581,7 @@
26122581 static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
26132582 				      unsigned int new_mode)
26142583 {
2615
-	struct b43legacy_wldev *uninitialized_var(up_dev);
2584
+	struct b43legacy_wldev *up_dev;
26162585 	struct b43legacy_wldev *down_dev;
26172586 	int err;
26182587 	bool gmode = false;
....@@ -2782,7 +2751,6 @@
27822751 
27832752 	spin_lock_irqsave(&wl->irq_lock, flags);
27842753 	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2785
-	mmiowb();
27862754 	spin_unlock_irqrestore(&wl->irq_lock, flags);
27872755 out_unlock_mutex:
27882756 	mutex_unlock(&wl->mutex);
....@@ -2901,7 +2869,6 @@
29012869 	spin_lock_irqsave(&wl->irq_lock, flags);
29022870 	b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
29032871 	/* XXX: why? */
2904
-	mmiowb();
29052872 	spin_unlock_irqrestore(&wl->irq_lock, flags);
29062873  out_unlock_mutex:
29072874 	mutex_unlock(&wl->mutex);
....@@ -3775,9 +3742,7 @@
37753742 	wldev->wl = wl;
37763743 	b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
37773744 	wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3778
-	tasklet_init(&wldev->isr_tasklet,
3779
-		     b43legacy_interrupt_tasklet,
3780
-		     (unsigned long)wldev);
3745
+	tasklet_setup(&wldev->isr_tasklet, b43legacy_interrupt_tasklet);
37813746 	if (modparam_pio)
37823747 		wldev->__using_pio = true;
37833748 	INIT_LIST_HEAD(&wldev->list);