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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d 
 kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
....@@ -1,17 +1,6 @@
1
+// SPDX-License-Identifier: ISC
12 /*
23  * Copyright (c) 2011 Broadcom Corporation
3
- *
4
- * Permission to use, copy, modify, and/or distribute this software for any
5
- * purpose with or without fee is hereby granted, provided that the above
6
- * copyright notice and this permission notice appear in all copies.
7
- *
8
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
154  */
165 
176 #include <linux/kernel.h>
....@@ -175,7 +164,6 @@
175164 
176165 	struct urb *bulk_urb; /* used for FW download */
177166 
178
-	bool wowl_enabled;
179167 	struct brcmf_mp_device *settings;
180168 };
181169 
....@@ -323,27 +311,43 @@
323311 	int err = 0;
324312 	int timeout = 0;
325313 	struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
314
+	struct usb_interface *intf = to_usb_interface(dev);
326315 
327316 	brcmf_dbg(USB, "Enter\n");
328
-	if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
329
-		return -EIO;
330317 
331
-	if (test_and_set_bit(0, &devinfo->ctl_op))
332
-		return -EIO;
318
+	err = usb_autopm_get_interface(intf);
319
+	if (err)
320
+		goto out;
321
+
322
+	if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
323
+		err = -EIO;
324
+		goto fail;
325
+	}
326
+
327
+	if (test_and_set_bit(0, &devinfo->ctl_op)) {
328
+		err = -EIO;
329
+		goto fail;
330
+	}
333331 
334332 	devinfo->ctl_completed = false;
335333 	err = brcmf_usb_send_ctl(devinfo, buf, len);
336334 	if (err) {
337335 		brcmf_err("fail %d bytes: %d\n", err, len);
338336 		clear_bit(0, &devinfo->ctl_op);
339
-		return err;
337
+		goto fail;
340338 	}
341339 	timeout = brcmf_usb_ioctl_resp_wait(devinfo);
342
-	clear_bit(0, &devinfo->ctl_op);
343340 	if (!timeout) {
344341 		brcmf_err("Txctl wait timed out\n");
342
+		usb_kill_urb(devinfo->ctl_urb);
345343 		err = -EIO;
344
+		goto fail;
346345 	}
346
+	clear_bit(0, &devinfo->ctl_op);
347
+
348
+fail:
349
+	usb_autopm_put_interface(intf);
350
+out:
347351 	return err;
348352 }
349353 
....@@ -352,32 +356,46 @@
352356 	int err = 0;
353357 	int timeout = 0;
354358 	struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
359
+	struct usb_interface *intf = to_usb_interface(dev);
355360 
356361 	brcmf_dbg(USB, "Enter\n");
357
-	if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
358
-		return -EIO;
359362 
360
-	if (test_and_set_bit(0, &devinfo->ctl_op))
361
-		return -EIO;
363
+	err = usb_autopm_get_interface(intf);
364
+	if (err)
365
+		goto out;
366
+
367
+	if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
368
+		err = -EIO;
369
+		goto fail;
370
+	}
371
+
372
+	if (test_and_set_bit(0, &devinfo->ctl_op)) {
373
+		err = -EIO;
374
+		goto fail;
375
+	}
362376 
363377 	devinfo->ctl_completed = false;
364378 	err = brcmf_usb_recv_ctl(devinfo, buf, len);
365379 	if (err) {
366380 		brcmf_err("fail %d bytes: %d\n", err, len);
367381 		clear_bit(0, &devinfo->ctl_op);
368
-		return err;
382
+		goto fail;
369383 	}
370384 	timeout = brcmf_usb_ioctl_resp_wait(devinfo);
371385 	err = devinfo->ctl_urb_status;
372
-	clear_bit(0, &devinfo->ctl_op);
373386 	if (!timeout) {
374387 		brcmf_err("rxctl wait timed out\n");
388
+		usb_kill_urb(devinfo->ctl_urb);
375389 		err = -EIO;
390
+		goto fail;
376391 	}
392
+	clear_bit(0, &devinfo->ctl_op);
393
+fail:
394
+	usb_autopm_put_interface(intf);
377395 	if (!err)
378396 		return devinfo->ctl_urb_actual_length;
379
-	else
380
-		return err;
397
+out:
398
+	return err;
381399 }
382400 
383401 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo,
....@@ -446,22 +464,17 @@
446464 
447465 }
448466 
449
-static void brcmf_usb_free_q(struct list_head *q, bool pending)
467
+static void brcmf_usb_free_q(struct list_head *q)
450468 {
451469 	struct brcmf_usbreq *req, *next;
452
-	int i = 0;
470
+
453471 	list_for_each_entry_safe(req, next, q, list) {
454472 		if (!req->urb) {
455473 			brcmf_err("bad req\n");
456474 			break;
457475 		}
458
-		i++;
459
-		if (pending) {
460
-			usb_kill_urb(req->urb);
461
-		} else {
462
-			usb_free_urb(req->urb);
463
-			list_del_init(&req->list);
464
-		}
476
+		usb_free_urb(req->urb);
477
+		list_del_init(&req->list);
465478 	}
466479 }
467480 
....@@ -509,17 +522,19 @@
509522 	skb = req->skb;
510523 	req->skb = NULL;
511524 
512
-	/* zero lenght packets indicate usb "failure". Do not refill */
525
+	/* zero length packets indicate usb "failure". Do not refill */
513526 	if (urb->status != 0 || !urb->actual_length) {
514527 		brcmu_pkt_buf_free_skb(skb);
515528 		brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
516529 		return;
517530 	}
518531 
519
-	if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) {
532
+	if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP ||
533
+	    devinfo->bus_pub.state == BRCMFMAC_USB_STATE_SLEEP) {
520534 		skb_put(skb, urb->actual_length);
521
-		brcmf_rx_frame(devinfo->dev, skb, true);
535
+		brcmf_rx_frame(devinfo->dev, skb, true, true);
522536 		brcmf_usb_rx_refill(devinfo, req);
537
+		usb_mark_last_busy(urb->dev);
523538 	} else {
524539 		brcmu_pkt_buf_free_skb(skb);
525540 		brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
....@@ -576,7 +591,6 @@
576591 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state)
577592 {
578593 	struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus;
579
-	int old_state;
580594 
581595 	brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n",
582596 		  devinfo->bus_pub.state, state);
....@@ -584,7 +598,6 @@
584598 	if (devinfo->bus_pub.state == state)
585599 		return;
586600 
587
-	old_state = devinfo->bus_pub.state;
588601 	devinfo->bus_pub.state = state;
589602 
590603 	/* update state of upper layer */
....@@ -605,6 +618,11 @@
605618 	struct brcmf_usbreq  *req;
606619 	int ret;
607620 	unsigned long flags;
621
+	struct usb_interface *intf = to_usb_interface(dev);
622
+
623
+	ret = usb_autopm_get_interface(intf);
624
+	if (ret)
625
+		goto out;
608626 
609627 	brcmf_dbg(USB, "Enter, skb=%p\n", skb);
610628 	if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
....@@ -643,9 +661,10 @@
643661 		devinfo->tx_flowblock = true;
644662 	}
645663 	spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
646
-	return 0;
647664 
648665 fail:
666
+	usb_autopm_put_interface(intf);
667
+out:
649668 	return ret;
650669 }
651670 
....@@ -1009,20 +1028,32 @@
10091028 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
10101029 {
10111030 	int err;
1031
+	struct usb_interface *intf;
10121032 
10131033 	brcmf_dbg(USB, "Enter\n");
1014
-	if (devinfo == NULL)
1015
-		return -ENODEV;
1034
+	if (!devinfo) {
1035
+		err = -ENODEV;
1036
+		goto out;
1037
+	}
10161038 
10171039 	if (!devinfo->image) {
10181040 		brcmf_err("No firmware!\n");
1019
-		return -ENOENT;
1041
+		err = -ENOENT;
1042
+		goto out;
10201043 	}
1044
+
1045
+	intf = to_usb_interface(devinfo->dev);
1046
+	err = usb_autopm_get_interface(intf);
1047
+	if (err)
1048
+		goto out;
10211049 
10221050 	err = brcmf_usb_dlstart(devinfo,
10231051 		(u8 *)devinfo->image, devinfo->image_len);
10241052 	if (err == 0)
10251053 		err = brcmf_usb_dlrun(devinfo);
1054
+
1055
+	usb_autopm_put_interface(intf);
1056
+out:
10261057 	return err;
10271058 }
10281059 
....@@ -1032,8 +1063,8 @@
10321063 	brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo);
10331064 
10341065 	/* free the URBS */
1035
-	brcmf_usb_free_q(&devinfo->rx_freeq, false);
1036
-	brcmf_usb_free_q(&devinfo->tx_freeq, false);
1066
+	brcmf_usb_free_q(&devinfo->rx_freeq);
1067
+	brcmf_usb_free_q(&devinfo->tx_freeq);
10371068 
10381069 	usb_free_urb(devinfo->ctl_urb);
10391070 	usb_free_urb(devinfo->bulk_urb);
....@@ -1123,18 +1154,6 @@
11231154 	return NULL;
11241155 }
11251156 
1126
-static void brcmf_usb_wowl_config(struct device *dev, bool enabled)
1127
-{
1128
-	struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
1129
-
1130
-	brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled);
1131
-	devinfo->wowl_enabled = enabled;
1132
-	if (enabled)
1133
-		device_set_wakeup_enable(devinfo->dev, true);
1134
-	else
1135
-		device_set_wakeup_enable(devinfo->dev, false);
1136
-}
1137
-
11381157 static
11391158 int brcmf_usb_get_fwname(struct device *dev, const char *ext, u8 *fw_name)
11401159 {
....@@ -1161,7 +1180,6 @@
11611180 	.txdata = brcmf_usb_tx,
11621181 	.txctl = brcmf_usb_tx_ctlpkt,
11631182 	.rxctl = brcmf_usb_rx_ctlpkt,
1164
-	.wowl_config = brcmf_usb_wowl_config,
11651183 	.get_fwname = brcmf_usb_get_fwname,
11661184 };
11671185 
....@@ -1197,8 +1215,12 @@
11971215 	if (ret)
11981216 		goto error;
11991217 
1218
+	ret = brcmf_alloc(devinfo->dev, devinfo->settings);
1219
+	if (ret)
1220
+		goto error;
1221
+
12001222 	/* Attach to the common driver interface */
1201
-	ret = brcmf_attach(devinfo->dev, devinfo->settings);
1223
+	ret = brcmf_attach(devinfo->dev);
12021224 	if (ret)
12031225 		goto error;
12041226 
....@@ -1270,7 +1292,10 @@
12701292 	}
12711293 
12721294 	if (!brcmf_usb_dlneeded(devinfo)) {
1273
-		ret = brcmf_attach(devinfo->dev, devinfo->settings);
1295
+		ret = brcmf_alloc(devinfo->dev, devinfo->settings);
1296
+		if (ret)
1297
+			goto fail;
1298
+		ret = brcmf_attach(devinfo->dev);
12741299 		if (ret)
12751300 			goto fail;
12761301 		/* we are done */
....@@ -1298,6 +1323,7 @@
12981323 
12991324 fail:
13001325 	/* Release resources in reverse order */
1326
+	brcmf_free(devinfo->dev);
13011327 	kfree(bus);
13021328 	brcmf_usb_detach(devinfo);
13031329 	return ret;
....@@ -1311,6 +1337,7 @@
13111337 	brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
13121338 
13131339 	brcmf_detach(devinfo->dev);
1340
+	brcmf_free(devinfo->dev);
13141341 	kfree(devinfo->bus_pub.bus);
13151342 	brcmf_usb_detach(devinfo);
13161343 }
....@@ -1340,6 +1367,8 @@
13401367 	init_completion(&devinfo->dev_init_done);
13411368 
13421369 	usb_set_intfdata(intf, devinfo);
1370
+
1371
+	intf->needs_remote_wakeup = 1;
13431372 
13441373 	/* Check that the device supports only one configuration */
13451374 	if (usb->descriptor.bNumConfigurations != 1) {
....@@ -1454,10 +1483,8 @@
14541483 
14551484 	brcmf_dbg(USB, "Enter\n");
14561485 	devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP;
1457
-	if (devinfo->wowl_enabled)
1458
-		brcmf_cancel_all_urbs(devinfo);
1459
-	else
1460
-		brcmf_detach(&usb->dev);
1486
+	brcmf_cancel_all_urbs(devinfo);
1487
+	device_set_wakeup_enable(devinfo->dev, true);
14611488 	return 0;
14621489 }
14631490 
....@@ -1470,11 +1497,10 @@
14701497 	struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
14711498 
14721499 	brcmf_dbg(USB, "Enter\n");
1473
-	if (!devinfo->wowl_enabled)
1474
-		return brcmf_attach(devinfo->dev, devinfo->settings);
14751500 
14761501 	devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP;
14771502 	brcmf_usb_rx_fill_all(devinfo);
1503
+	device_set_wakeup_enable(devinfo->dev, false);
14781504 	return 0;
14791505 }
14801506 
....@@ -1531,6 +1557,7 @@
15311557 	.suspend = brcmf_usb_suspend,
15321558 	.resume = brcmf_usb_resume,
15331559 	.reset_resume = brcmf_usb_reset_resume,
1560
+	.supports_autosuspend = true,
15341561 	.disable_hub_initiated_lpm = 1,
15351562 };
15361563 
....@@ -1551,11 +1578,14 @@
15511578 	brcmf_dbg(USB, "Enter\n");
15521579 	ret = driver_for_each_device(drv, NULL, NULL,
15531580 				     brcmf_usb_reset_device);
1581
+	if (ret)
1582
+		brcmf_err("failed to reset all usb devices %d\n", ret);
1583
+
15541584 	usb_deregister(&brcmf_usbdrvr);
15551585 }
15561586 
1557
-void brcmf_usb_register(void)
1587
+int brcmf_usb_register(void)
15581588 {
15591589 	brcmf_dbg(USB, "Enter\n");
1560
-	usb_register(&brcmf_usbdrvr);
1590
+	return usb_register(&brcmf_usbdrvr);
15611591 }