1 /* ZD1211 USB-WLAN driver for Linux
3 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
4 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
5 * Copyright (C) 2006-2007 Michael Wu <flamingice@sourmilk.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include <linux/kernel.h>
23 #include <linux/init.h>
24 #include <linux/firmware.h>
25 #include <linux/device.h>
26 #include <linux/errno.h>
27 #include <linux/slab.h>
28 #include <linux/skbuff.h>
29 #include <linux/usb.h>
30 #include <linux/workqueue.h>
31 #include <net/mac80211.h>
32 #include <asm/unaligned.h>
38 static struct usb_device_id usb_ids
[] = {
40 { USB_DEVICE(0x0105, 0x145f), .driver_info
= DEVICE_ZD1211
},
41 { USB_DEVICE(0x0586, 0x3401), .driver_info
= DEVICE_ZD1211
},
42 { USB_DEVICE(0x0586, 0x3402), .driver_info
= DEVICE_ZD1211
},
43 { USB_DEVICE(0x0586, 0x3407), .driver_info
= DEVICE_ZD1211
},
44 { USB_DEVICE(0x0586, 0x3409), .driver_info
= DEVICE_ZD1211
},
45 { USB_DEVICE(0x079b, 0x004a), .driver_info
= DEVICE_ZD1211
},
46 { USB_DEVICE(0x07b8, 0x6001), .driver_info
= DEVICE_ZD1211
},
47 { USB_DEVICE(0x0ace, 0x1211), .driver_info
= DEVICE_ZD1211
},
48 { USB_DEVICE(0x0ace, 0xa211), .driver_info
= DEVICE_ZD1211
},
49 { USB_DEVICE(0x0b05, 0x170c), .driver_info
= DEVICE_ZD1211
},
50 { USB_DEVICE(0x0b3b, 0x1630), .driver_info
= DEVICE_ZD1211
},
51 { USB_DEVICE(0x0b3b, 0x5630), .driver_info
= DEVICE_ZD1211
},
52 { USB_DEVICE(0x0df6, 0x9071), .driver_info
= DEVICE_ZD1211
},
53 { USB_DEVICE(0x0df6, 0x9075), .driver_info
= DEVICE_ZD1211
},
54 { USB_DEVICE(0x126f, 0xa006), .driver_info
= DEVICE_ZD1211
},
55 { USB_DEVICE(0x129b, 0x1666), .driver_info
= DEVICE_ZD1211
},
56 { USB_DEVICE(0x13b1, 0x001e), .driver_info
= DEVICE_ZD1211
},
57 { USB_DEVICE(0x1435, 0x0711), .driver_info
= DEVICE_ZD1211
},
58 { USB_DEVICE(0x14ea, 0xab13), .driver_info
= DEVICE_ZD1211
},
59 { USB_DEVICE(0x157e, 0x300a), .driver_info
= DEVICE_ZD1211
},
60 { USB_DEVICE(0x157e, 0x300b), .driver_info
= DEVICE_ZD1211
},
61 { USB_DEVICE(0x157e, 0x3204), .driver_info
= DEVICE_ZD1211
},
62 { USB_DEVICE(0x1740, 0x2000), .driver_info
= DEVICE_ZD1211
},
63 { USB_DEVICE(0x6891, 0xa727), .driver_info
= DEVICE_ZD1211
},
65 { USB_DEVICE(0x0053, 0x5301), .driver_info
= DEVICE_ZD1211B
},
66 { USB_DEVICE(0x0409, 0x0248), .driver_info
= DEVICE_ZD1211B
},
67 { USB_DEVICE(0x0411, 0x00da), .driver_info
= DEVICE_ZD1211B
},
68 { USB_DEVICE(0x0471, 0x1236), .driver_info
= DEVICE_ZD1211B
},
69 { USB_DEVICE(0x0471, 0x1237), .driver_info
= DEVICE_ZD1211B
},
70 { USB_DEVICE(0x050d, 0x705c), .driver_info
= DEVICE_ZD1211B
},
71 { USB_DEVICE(0x054c, 0x0257), .driver_info
= DEVICE_ZD1211B
},
72 { USB_DEVICE(0x0586, 0x340a), .driver_info
= DEVICE_ZD1211B
},
73 { USB_DEVICE(0x0586, 0x340f), .driver_info
= DEVICE_ZD1211B
},
74 { USB_DEVICE(0x0586, 0x3410), .driver_info
= DEVICE_ZD1211B
},
75 { USB_DEVICE(0x0586, 0x3412), .driver_info
= DEVICE_ZD1211B
},
76 { USB_DEVICE(0x0586, 0x3413), .driver_info
= DEVICE_ZD1211B
},
77 { USB_DEVICE(0x079b, 0x0062), .driver_info
= DEVICE_ZD1211B
},
78 { USB_DEVICE(0x07b8, 0x6001), .driver_info
= DEVICE_ZD1211B
},
79 { USB_DEVICE(0x07fa, 0x1196), .driver_info
= DEVICE_ZD1211B
},
80 { USB_DEVICE(0x083a, 0x4505), .driver_info
= DEVICE_ZD1211B
},
81 { USB_DEVICE(0x083a, 0xe501), .driver_info
= DEVICE_ZD1211B
},
82 { USB_DEVICE(0x083a, 0xe503), .driver_info
= DEVICE_ZD1211B
},
83 { USB_DEVICE(0x083a, 0xe506), .driver_info
= DEVICE_ZD1211B
},
84 { USB_DEVICE(0x0ace, 0x1215), .driver_info
= DEVICE_ZD1211B
},
85 { USB_DEVICE(0x0ace, 0xb215), .driver_info
= DEVICE_ZD1211B
},
86 { USB_DEVICE(0x0b05, 0x171b), .driver_info
= DEVICE_ZD1211B
},
87 { USB_DEVICE(0x0baf, 0x0121), .driver_info
= DEVICE_ZD1211B
},
88 { USB_DEVICE(0x0cde, 0x001a), .driver_info
= DEVICE_ZD1211B
},
89 { USB_DEVICE(0x0df6, 0x0036), .driver_info
= DEVICE_ZD1211B
},
90 { USB_DEVICE(0x129b, 0x1667), .driver_info
= DEVICE_ZD1211B
},
91 { USB_DEVICE(0x13b1, 0x0024), .driver_info
= DEVICE_ZD1211B
},
92 { USB_DEVICE(0x157e, 0x300d), .driver_info
= DEVICE_ZD1211B
},
93 { USB_DEVICE(0x1582, 0x6003), .driver_info
= DEVICE_ZD1211B
},
94 { USB_DEVICE(0x2019, 0x5303), .driver_info
= DEVICE_ZD1211B
},
95 /* "Driverless" devices that need ejecting */
96 { USB_DEVICE(0x0ace, 0x2011), .driver_info
= DEVICE_INSTALLER
},
97 { USB_DEVICE(0x0ace, 0x20ff), .driver_info
= DEVICE_INSTALLER
},
101 MODULE_LICENSE("GPL");
102 MODULE_DESCRIPTION("USB driver for devices with the ZD1211 chip.");
103 MODULE_AUTHOR("Ulrich Kunitz");
104 MODULE_AUTHOR("Daniel Drake");
105 MODULE_VERSION("1.0");
106 MODULE_DEVICE_TABLE(usb
, usb_ids
);
108 #define FW_ZD1211_PREFIX "zd1211/zd1211_"
109 #define FW_ZD1211B_PREFIX "zd1211/zd1211b_"
111 /* USB device initialization */
112 static void int_urb_complete(struct urb
*urb
);
114 static int request_fw_file(
115 const struct firmware
**fw
, const char *name
, struct device
*device
)
119 dev_dbg_f(device
, "fw name %s\n", name
);
121 r
= request_firmware(fw
, name
, device
);
124 "Could not load firmware file %s. Error number %d\n",
129 static inline u16
get_bcdDevice(const struct usb_device
*udev
)
131 return le16_to_cpu(udev
->descriptor
.bcdDevice
);
134 enum upload_code_flags
{
138 /* Ensures that MAX_TRANSFER_SIZE is even. */
139 #define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
141 static int upload_code(struct usb_device
*udev
,
142 const u8
*data
, size_t size
, u16 code_offset
, int flags
)
147 /* USB request blocks need "kmalloced" buffers.
149 p
= kmalloc(MAX_TRANSFER_SIZE
, GFP_KERNEL
);
151 dev_err(&udev
->dev
, "out of memory\n");
158 size_t transfer_size
= size
<= MAX_TRANSFER_SIZE
?
159 size
: MAX_TRANSFER_SIZE
;
161 dev_dbg_f(&udev
->dev
, "transfer size %zu\n", transfer_size
);
163 memcpy(p
, data
, transfer_size
);
164 r
= usb_control_msg(udev
, usb_sndctrlpipe(udev
, 0),
165 USB_REQ_FIRMWARE_DOWNLOAD
,
166 USB_DIR_OUT
| USB_TYPE_VENDOR
,
167 code_offset
, 0, p
, transfer_size
, 1000 /* ms */);
170 "USB control request for firmware upload"
171 " failed. Error number %d\n", r
);
174 transfer_size
= r
& ~1;
176 size
-= transfer_size
;
177 data
+= transfer_size
;
178 code_offset
+= transfer_size
/sizeof(u16
);
181 if (flags
& REBOOT
) {
184 /* Use "DMA-aware" buffer. */
185 r
= usb_control_msg(udev
, usb_rcvctrlpipe(udev
, 0),
186 USB_REQ_FIRMWARE_CONFIRM
,
187 USB_DIR_IN
| USB_TYPE_VENDOR
,
188 0, 0, p
, sizeof(ret
), 5000 /* ms */);
189 if (r
!= sizeof(ret
)) {
191 "control request firmeware confirmation failed."
192 " Return value %d\n", r
);
200 "Internal error while downloading."
201 " Firmware confirm return value %#04x\n",
206 dev_dbg_f(&udev
->dev
, "firmware confirm return value %#04x\n",
216 static u16
get_word(const void *data
, u16 offset
)
218 const __le16
*p
= data
;
219 return le16_to_cpu(p
[offset
]);
222 static char *get_fw_name(struct zd_usb
*usb
, char *buffer
, size_t size
,
225 scnprintf(buffer
, size
, "%s%s",
227 FW_ZD1211B_PREFIX
: FW_ZD1211_PREFIX
,
232 static int handle_version_mismatch(struct zd_usb
*usb
,
233 const struct firmware
*ub_fw
)
235 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
236 const struct firmware
*ur_fw
= NULL
;
241 r
= request_fw_file(&ur_fw
,
242 get_fw_name(usb
, fw_name
, sizeof(fw_name
), "ur"),
247 r
= upload_code(udev
, ur_fw
->data
, ur_fw
->size
, FW_START
, REBOOT
);
251 offset
= (E2P_BOOT_CODE_OFFSET
* sizeof(u16
));
252 r
= upload_code(udev
, ub_fw
->data
+ offset
, ub_fw
->size
- offset
,
253 E2P_START
+ E2P_BOOT_CODE_OFFSET
, REBOOT
);
255 /* At this point, the vendor driver downloads the whole firmware
256 * image, hacks around with version IDs, and uploads it again,
257 * completely overwriting the boot code. We do not do this here as
258 * it is not required on any tested devices, and it is suspected to
261 release_firmware(ur_fw
);
265 static int upload_firmware(struct zd_usb
*usb
)
270 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
271 const struct firmware
*ub_fw
= NULL
;
272 const struct firmware
*uph_fw
= NULL
;
275 bcdDevice
= get_bcdDevice(udev
);
277 r
= request_fw_file(&ub_fw
,
278 get_fw_name(usb
, fw_name
, sizeof(fw_name
), "ub"),
283 fw_bcdDevice
= get_word(ub_fw
->data
, E2P_DATA_OFFSET
);
285 if (fw_bcdDevice
!= bcdDevice
) {
287 "firmware version %#06x and device bootcode version "
288 "%#06x differ\n", fw_bcdDevice
, bcdDevice
);
289 if (bcdDevice
<= 0x4313)
290 dev_warn(&udev
->dev
, "device has old bootcode, please "
291 "report success or failure\n");
293 r
= handle_version_mismatch(usb
, ub_fw
);
297 dev_dbg_f(&udev
->dev
,
298 "firmware device id %#06x is equal to the "
299 "actual device id\n", fw_bcdDevice
);
303 r
= request_fw_file(&uph_fw
,
304 get_fw_name(usb
, fw_name
, sizeof(fw_name
), "uphr"),
309 r
= upload_code(udev
, uph_fw
->data
, uph_fw
->size
, FW_START
, REBOOT
);
312 "Could not upload firmware code uph. Error number %d\n",
318 release_firmware(ub_fw
);
319 release_firmware(uph_fw
);
323 MODULE_FIRMWARE(FW_ZD1211B_PREFIX
"ur");
324 MODULE_FIRMWARE(FW_ZD1211_PREFIX
"ur");
325 MODULE_FIRMWARE(FW_ZD1211B_PREFIX
"ub");
326 MODULE_FIRMWARE(FW_ZD1211_PREFIX
"ub");
327 MODULE_FIRMWARE(FW_ZD1211B_PREFIX
"uphr");
328 MODULE_FIRMWARE(FW_ZD1211_PREFIX
"uphr");
330 /* Read data from device address space using "firmware interface" which does
331 * not require firmware to be loaded. */
332 int zd_usb_read_fw(struct zd_usb
*usb
, zd_addr_t addr
, u8
*data
, u16 len
)
335 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
338 /* Use "DMA-aware" buffer. */
339 buf
= kmalloc(len
, GFP_KERNEL
);
342 r
= usb_control_msg(udev
, usb_rcvctrlpipe(udev
, 0),
343 USB_REQ_FIRMWARE_READ_DATA
, USB_DIR_IN
| 0x40, addr
, 0,
347 "read over firmware interface failed: %d\n", r
);
349 } else if (r
!= len
) {
351 "incomplete read over firmware interface: %d/%d\n",
357 memcpy(data
, buf
, len
);
363 #define urb_dev(urb) (&(urb)->dev->dev)
365 static inline void handle_regs_int(struct urb
*urb
)
367 struct zd_usb
*usb
= urb
->context
;
368 struct zd_usb_interrupt
*intr
= &usb
->intr
;
372 ZD_ASSERT(in_interrupt());
373 spin_lock(&intr
->lock
);
375 int_num
= le16_to_cpu(*(__le16
*)(urb
->transfer_buffer
+2));
376 if (int_num
== CR_INTERRUPT
) {
377 struct zd_mac
*mac
= zd_hw_mac(zd_usb_to_hw(urb
->context
));
378 memcpy(&mac
->intr_buffer
, urb
->transfer_buffer
,
379 USB_MAX_EP_INT_BUFFER
);
380 schedule_work(&mac
->process_intr
);
381 } else if (intr
->read_regs_enabled
) {
382 intr
->read_regs
.length
= len
= urb
->actual_length
;
384 if (len
> sizeof(intr
->read_regs
.buffer
))
385 len
= sizeof(intr
->read_regs
.buffer
);
386 memcpy(intr
->read_regs
.buffer
, urb
->transfer_buffer
, len
);
387 intr
->read_regs_enabled
= 0;
388 complete(&intr
->read_regs
.completion
);
393 spin_unlock(&intr
->lock
);
396 static void int_urb_complete(struct urb
*urb
)
399 struct usb_int_header
*hdr
;
401 switch (urb
->status
) {
415 if (urb
->actual_length
< sizeof(hdr
)) {
416 dev_dbg_f(urb_dev(urb
), "error: urb %p to small\n", urb
);
420 hdr
= urb
->transfer_buffer
;
421 if (hdr
->type
!= USB_INT_TYPE
) {
422 dev_dbg_f(urb_dev(urb
), "error: urb %p wrong type\n", urb
);
427 case USB_INT_ID_REGS
:
428 handle_regs_int(urb
);
430 case USB_INT_ID_RETRY_FAILED
:
431 zd_mac_tx_failed(urb
);
434 dev_dbg_f(urb_dev(urb
), "error: urb %p unknown id %x\n", urb
,
435 (unsigned int)hdr
->id
);
440 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
442 dev_dbg_f(urb_dev(urb
), "resubmit urb %p\n", urb
);
447 kfree(urb
->transfer_buffer
);
450 static inline int int_urb_interval(struct usb_device
*udev
)
452 switch (udev
->speed
) {
463 static inline int usb_int_enabled(struct zd_usb
*usb
)
466 struct zd_usb_interrupt
*intr
= &usb
->intr
;
469 spin_lock_irqsave(&intr
->lock
, flags
);
471 spin_unlock_irqrestore(&intr
->lock
, flags
);
475 int zd_usb_enable_int(struct zd_usb
*usb
)
478 struct usb_device
*udev
;
479 struct zd_usb_interrupt
*intr
= &usb
->intr
;
480 void *transfer_buffer
= NULL
;
483 dev_dbg_f(zd_usb_dev(usb
), "\n");
485 urb
= usb_alloc_urb(0, GFP_KERNEL
);
491 ZD_ASSERT(!irqs_disabled());
492 spin_lock_irq(&intr
->lock
);
494 spin_unlock_irq(&intr
->lock
);
499 spin_unlock_irq(&intr
->lock
);
501 /* TODO: make it a DMA buffer */
503 transfer_buffer
= kmalloc(USB_MAX_EP_INT_BUFFER
, GFP_KERNEL
);
504 if (!transfer_buffer
) {
505 dev_dbg_f(zd_usb_dev(usb
),
506 "couldn't allocate transfer_buffer\n");
507 goto error_set_urb_null
;
510 udev
= zd_usb_to_usbdev(usb
);
511 usb_fill_int_urb(urb
, udev
, usb_rcvintpipe(udev
, EP_INT_IN
),
512 transfer_buffer
, USB_MAX_EP_INT_BUFFER
,
513 int_urb_complete
, usb
,
516 dev_dbg_f(zd_usb_dev(usb
), "submit urb %p\n", intr
->urb
);
517 r
= usb_submit_urb(urb
, GFP_KERNEL
);
519 dev_dbg_f(zd_usb_dev(usb
),
520 "Couldn't submit urb. Error number %d\n", r
);
526 kfree(transfer_buffer
);
528 spin_lock_irq(&intr
->lock
);
530 spin_unlock_irq(&intr
->lock
);
537 void zd_usb_disable_int(struct zd_usb
*usb
)
540 struct zd_usb_interrupt
*intr
= &usb
->intr
;
543 spin_lock_irqsave(&intr
->lock
, flags
);
546 spin_unlock_irqrestore(&intr
->lock
, flags
);
550 spin_unlock_irqrestore(&intr
->lock
, flags
);
553 dev_dbg_f(zd_usb_dev(usb
), "urb %p killed\n", urb
);
557 static void handle_rx_packet(struct zd_usb
*usb
, const u8
*buffer
,
561 const struct rx_length_info
*length_info
;
563 if (length
< sizeof(struct rx_length_info
)) {
564 /* It's not a complete packet anyhow. */
565 printk("%s: invalid, small RX packet : %d\n",
569 length_info
= (struct rx_length_info
*)
570 (buffer
+ length
- sizeof(struct rx_length_info
));
572 /* It might be that three frames are merged into a single URB
573 * transaction. We have to check for the length info tag.
575 * While testing we discovered that length_info might be unaligned,
576 * because if USB transactions are merged, the last packet will not
577 * be padded. Unaligned access might also happen if the length_info
578 * structure is not present.
580 if (get_unaligned_le16(&length_info
->tag
) == RX_LENGTH_INFO_TAG
)
582 unsigned int l
, k
, n
;
583 for (i
= 0, l
= 0;; i
++) {
584 k
= get_unaligned_le16(&length_info
->length
[i
]);
590 zd_mac_rx(zd_usb_to_hw(usb
), buffer
+l
, k
);
596 zd_mac_rx(zd_usb_to_hw(usb
), buffer
, length
);
600 static void rx_urb_complete(struct urb
*urb
)
603 struct zd_usb_rx
*rx
;
607 switch (urb
->status
) {
618 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
622 buffer
= urb
->transfer_buffer
;
623 length
= urb
->actual_length
;
627 if (length
%rx
->usb_packet_size
> rx
->usb_packet_size
-4) {
628 /* If there is an old first fragment, we don't care. */
629 dev_dbg_f(urb_dev(urb
), "*** first fragment ***\n");
630 ZD_ASSERT(length
<= ARRAY_SIZE(rx
->fragment
));
631 spin_lock(&rx
->lock
);
632 memcpy(rx
->fragment
, buffer
, length
);
633 rx
->fragment_length
= length
;
634 spin_unlock(&rx
->lock
);
638 spin_lock(&rx
->lock
);
639 if (rx
->fragment_length
> 0) {
640 /* We are on a second fragment, we believe */
641 ZD_ASSERT(length
+ rx
->fragment_length
<=
642 ARRAY_SIZE(rx
->fragment
));
643 dev_dbg_f(urb_dev(urb
), "*** second fragment ***\n");
644 memcpy(rx
->fragment
+rx
->fragment_length
, buffer
, length
);
645 handle_rx_packet(usb
, rx
->fragment
,
646 rx
->fragment_length
+ length
);
647 rx
->fragment_length
= 0;
648 spin_unlock(&rx
->lock
);
650 spin_unlock(&rx
->lock
);
651 handle_rx_packet(usb
, buffer
, length
);
655 usb_submit_urb(urb
, GFP_ATOMIC
);
658 static struct urb
*alloc_rx_urb(struct zd_usb
*usb
)
660 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
664 urb
= usb_alloc_urb(0, GFP_KERNEL
);
667 buffer
= usb_buffer_alloc(udev
, USB_MAX_RX_SIZE
, GFP_KERNEL
,
674 usb_fill_bulk_urb(urb
, udev
, usb_rcvbulkpipe(udev
, EP_DATA_IN
),
675 buffer
, USB_MAX_RX_SIZE
,
676 rx_urb_complete
, usb
);
677 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
682 static void free_rx_urb(struct urb
*urb
)
686 usb_buffer_free(urb
->dev
, urb
->transfer_buffer_length
,
687 urb
->transfer_buffer
, urb
->transfer_dma
);
691 int zd_usb_enable_rx(struct zd_usb
*usb
)
694 struct zd_usb_rx
*rx
= &usb
->rx
;
697 dev_dbg_f(zd_usb_dev(usb
), "\n");
700 urbs
= kcalloc(RX_URBS_COUNT
, sizeof(struct urb
*), GFP_KERNEL
);
703 for (i
= 0; i
< RX_URBS_COUNT
; i
++) {
704 urbs
[i
] = alloc_rx_urb(usb
);
709 ZD_ASSERT(!irqs_disabled());
710 spin_lock_irq(&rx
->lock
);
712 spin_unlock_irq(&rx
->lock
);
717 rx
->urbs_count
= RX_URBS_COUNT
;
718 spin_unlock_irq(&rx
->lock
);
720 for (i
= 0; i
< RX_URBS_COUNT
; i
++) {
721 r
= usb_submit_urb(urbs
[i
], GFP_KERNEL
);
728 for (i
= 0; i
< RX_URBS_COUNT
; i
++) {
729 usb_kill_urb(urbs
[i
]);
731 spin_lock_irq(&rx
->lock
);
734 spin_unlock_irq(&rx
->lock
);
737 for (i
= 0; i
< RX_URBS_COUNT
; i
++)
738 free_rx_urb(urbs
[i
]);
743 void zd_usb_disable_rx(struct zd_usb
*usb
)
749 struct zd_usb_rx
*rx
= &usb
->rx
;
751 spin_lock_irqsave(&rx
->lock
, flags
);
753 count
= rx
->urbs_count
;
754 spin_unlock_irqrestore(&rx
->lock
, flags
);
758 for (i
= 0; i
< count
; i
++) {
759 usb_kill_urb(urbs
[i
]);
760 free_rx_urb(urbs
[i
]);
764 spin_lock_irqsave(&rx
->lock
, flags
);
767 spin_unlock_irqrestore(&rx
->lock
, flags
);
771 * zd_usb_disable_tx - disable transmission
772 * @usb: the zd1211rw-private USB structure
774 * Frees all URBs in the free list and marks the transmission as disabled.
776 void zd_usb_disable_tx(struct zd_usb
*usb
)
778 struct zd_usb_tx
*tx
= &usb
->tx
;
780 struct list_head
*pos
, *n
;
782 spin_lock_irqsave(&tx
->lock
, flags
);
783 list_for_each_safe(pos
, n
, &tx
->free_urb_list
) {
785 usb_free_urb(list_entry(pos
, struct urb
, urb_list
));
788 tx
->submitted_urbs
= 0;
789 /* The stopped state is ignored, relying on ieee80211_wake_queues()
790 * in a potentionally following zd_usb_enable_tx().
792 spin_unlock_irqrestore(&tx
->lock
, flags
);
796 * zd_usb_enable_tx - enables transmission
797 * @usb: a &struct zd_usb pointer
799 * This function enables transmission and prepares the &zd_usb_tx data
802 void zd_usb_enable_tx(struct zd_usb
*usb
)
805 struct zd_usb_tx
*tx
= &usb
->tx
;
807 spin_lock_irqsave(&tx
->lock
, flags
);
809 tx
->submitted_urbs
= 0;
810 ieee80211_wake_queues(zd_usb_to_hw(usb
));
812 spin_unlock_irqrestore(&tx
->lock
, flags
);
816 * alloc_tx_urb - provides an tx URB
817 * @usb: a &struct zd_usb pointer
819 * Allocates a new URB. If possible takes the urb from the free list in
822 static struct urb
*alloc_tx_urb(struct zd_usb
*usb
)
824 struct zd_usb_tx
*tx
= &usb
->tx
;
826 struct list_head
*entry
;
829 spin_lock_irqsave(&tx
->lock
, flags
);
830 if (list_empty(&tx
->free_urb_list
)) {
831 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
834 entry
= tx
->free_urb_list
.next
;
836 urb
= list_entry(entry
, struct urb
, urb_list
);
838 spin_unlock_irqrestore(&tx
->lock
, flags
);
843 * free_tx_urb - frees a used tx URB
844 * @usb: a &struct zd_usb pointer
845 * @urb: URB to be freed
847 * Frees the the transmission URB, which means to put it on the free URB
850 static void free_tx_urb(struct zd_usb
*usb
, struct urb
*urb
)
852 struct zd_usb_tx
*tx
= &usb
->tx
;
855 spin_lock_irqsave(&tx
->lock
, flags
);
860 list_add(&urb
->urb_list
, &tx
->free_urb_list
);
862 spin_unlock_irqrestore(&tx
->lock
, flags
);
865 static void tx_dec_submitted_urbs(struct zd_usb
*usb
)
867 struct zd_usb_tx
*tx
= &usb
->tx
;
870 spin_lock_irqsave(&tx
->lock
, flags
);
871 --tx
->submitted_urbs
;
872 if (tx
->stopped
&& tx
->submitted_urbs
<= ZD_USB_TX_LOW
) {
873 ieee80211_wake_queues(zd_usb_to_hw(usb
));
876 spin_unlock_irqrestore(&tx
->lock
, flags
);
879 static void tx_inc_submitted_urbs(struct zd_usb
*usb
)
881 struct zd_usb_tx
*tx
= &usb
->tx
;
884 spin_lock_irqsave(&tx
->lock
, flags
);
885 ++tx
->submitted_urbs
;
886 if (!tx
->stopped
&& tx
->submitted_urbs
> ZD_USB_TX_HIGH
) {
887 ieee80211_stop_queues(zd_usb_to_hw(usb
));
890 spin_unlock_irqrestore(&tx
->lock
, flags
);
894 * tx_urb_complete - completes the execution of an URB
897 * This function is called if the URB has been transferred to a device or an
898 * error has happened.
900 static void tx_urb_complete(struct urb
*urb
)
904 struct ieee80211_tx_info
*info
;
907 switch (urb
->status
) {
916 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
919 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
923 skb
= (struct sk_buff
*)urb
->context
;
925 * grab 'usb' pointer before handing off the skb (since
926 * it might be freed by zd_mac_tx_to_dev or mac80211)
928 info
= IEEE80211_SKB_CB(skb
);
929 usb
= &zd_hw_mac(info
->rate_driver_data
[0])->chip
.usb
;
930 zd_mac_tx_to_dev(skb
, urb
->status
);
931 free_tx_urb(usb
, urb
);
932 tx_dec_submitted_urbs(usb
);
935 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
937 dev_dbg_f(urb_dev(urb
), "error resubmit urb %p %d\n", urb
, r
);
943 * zd_usb_tx: initiates transfer of a frame of the device
945 * @usb: the zd1211rw-private USB structure
946 * @skb: a &struct sk_buff pointer
948 * This function tranmits a frame to the device. It doesn't wait for
949 * completion. The frame must contain the control set and have all the
950 * control set information available.
952 * The function returns 0 if the transfer has been successfully initiated.
954 int zd_usb_tx(struct zd_usb
*usb
, struct sk_buff
*skb
)
957 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
960 urb
= alloc_tx_urb(usb
);
966 usb_fill_bulk_urb(urb
, udev
, usb_sndbulkpipe(udev
, EP_DATA_OUT
),
967 skb
->data
, skb
->len
, tx_urb_complete
, skb
);
969 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
972 tx_inc_submitted_urbs(usb
);
975 free_tx_urb(usb
, urb
);
980 static inline void init_usb_interrupt(struct zd_usb
*usb
)
982 struct zd_usb_interrupt
*intr
= &usb
->intr
;
984 spin_lock_init(&intr
->lock
);
985 intr
->interval
= int_urb_interval(zd_usb_to_usbdev(usb
));
986 init_completion(&intr
->read_regs
.completion
);
987 intr
->read_regs
.cr_int_addr
= cpu_to_le16((u16
)CR_INTERRUPT
);
990 static inline void init_usb_rx(struct zd_usb
*usb
)
992 struct zd_usb_rx
*rx
= &usb
->rx
;
993 spin_lock_init(&rx
->lock
);
994 if (interface_to_usbdev(usb
->intf
)->speed
== USB_SPEED_HIGH
) {
995 rx
->usb_packet_size
= 512;
997 rx
->usb_packet_size
= 64;
999 ZD_ASSERT(rx
->fragment_length
== 0);
1002 static inline void init_usb_tx(struct zd_usb
*usb
)
1004 struct zd_usb_tx
*tx
= &usb
->tx
;
1005 spin_lock_init(&tx
->lock
);
1008 INIT_LIST_HEAD(&tx
->free_urb_list
);
1009 tx
->submitted_urbs
= 0;
1012 void zd_usb_init(struct zd_usb
*usb
, struct ieee80211_hw
*hw
,
1013 struct usb_interface
*intf
)
1015 memset(usb
, 0, sizeof(*usb
));
1016 usb
->intf
= usb_get_intf(intf
);
1017 usb_set_intfdata(usb
->intf
, hw
);
1018 init_usb_interrupt(usb
);
1023 void zd_usb_clear(struct zd_usb
*usb
)
1025 usb_set_intfdata(usb
->intf
, NULL
);
1026 usb_put_intf(usb
->intf
);
1027 ZD_MEMCLEAR(usb
, sizeof(*usb
));
1028 /* FIXME: usb_interrupt, usb_tx, usb_rx? */
1031 static const char *speed(enum usb_device_speed speed
)
1036 case USB_SPEED_FULL
:
1038 case USB_SPEED_HIGH
:
1041 return "unknown speed";
1045 static int scnprint_id(struct usb_device
*udev
, char *buffer
, size_t size
)
1047 return scnprintf(buffer
, size
, "%04hx:%04hx v%04hx %s",
1048 le16_to_cpu(udev
->descriptor
.idVendor
),
1049 le16_to_cpu(udev
->descriptor
.idProduct
),
1050 get_bcdDevice(udev
),
1051 speed(udev
->speed
));
1054 int zd_usb_scnprint_id(struct zd_usb
*usb
, char *buffer
, size_t size
)
1056 struct usb_device
*udev
= interface_to_usbdev(usb
->intf
);
1057 return scnprint_id(udev
, buffer
, size
);
1061 static void print_id(struct usb_device
*udev
)
1065 scnprint_id(udev
, buffer
, sizeof(buffer
));
1066 buffer
[sizeof(buffer
)-1] = 0;
1067 dev_dbg_f(&udev
->dev
, "%s\n", buffer
);
1070 #define print_id(udev) do { } while (0)
1073 static int eject_installer(struct usb_interface
*intf
)
1075 struct usb_device
*udev
= interface_to_usbdev(intf
);
1076 struct usb_host_interface
*iface_desc
= &intf
->altsetting
[0];
1077 struct usb_endpoint_descriptor
*endpoint
;
1082 /* Find bulk out endpoint */
1083 for (r
= 1; r
>= 0; r
--) {
1084 endpoint
= &iface_desc
->endpoint
[r
].desc
;
1085 if (usb_endpoint_dir_out(endpoint
) &&
1086 usb_endpoint_xfer_bulk(endpoint
)) {
1087 bulk_out_ep
= endpoint
->bEndpointAddress
;
1093 "zd1211rw: Could not find bulk out endpoint\n");
1097 cmd
= kzalloc(31, GFP_KERNEL
);
1101 /* USB bulk command block */
1102 cmd
[0] = 0x55; /* bulk command signature */
1103 cmd
[1] = 0x53; /* bulk command signature */
1104 cmd
[2] = 0x42; /* bulk command signature */
1105 cmd
[3] = 0x43; /* bulk command signature */
1106 cmd
[14] = 6; /* command length */
1108 cmd
[15] = 0x1b; /* SCSI command: START STOP UNIT */
1109 cmd
[19] = 0x2; /* eject disc */
1111 dev_info(&udev
->dev
, "Ejecting virtual installer media...\n");
1112 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, bulk_out_ep
),
1113 cmd
, 31, NULL
, 2000);
1118 /* At this point, the device disconnects and reconnects with the real
1121 usb_set_intfdata(intf
, NULL
);
1125 int zd_usb_init_hw(struct zd_usb
*usb
)
1128 struct zd_mac
*mac
= zd_usb_to_mac(usb
);
1130 dev_dbg_f(zd_usb_dev(usb
), "\n");
1132 r
= upload_firmware(usb
);
1134 dev_err(zd_usb_dev(usb
),
1135 "couldn't load firmware. Error number %d\n", r
);
1139 r
= usb_reset_configuration(zd_usb_to_usbdev(usb
));
1141 dev_dbg_f(zd_usb_dev(usb
),
1142 "couldn't reset configuration. Error number %d\n", r
);
1146 r
= zd_mac_init_hw(mac
->hw
);
1148 dev_dbg_f(zd_usb_dev(usb
),
1149 "couldn't initialize mac. Error number %d\n", r
);
1153 usb
->initialized
= 1;
1157 static int probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
1160 struct usb_device
*udev
= interface_to_usbdev(intf
);
1162 struct ieee80211_hw
*hw
= NULL
;
1166 if (id
->driver_info
& DEVICE_INSTALLER
)
1167 return eject_installer(intf
);
1169 switch (udev
->speed
) {
1171 case USB_SPEED_FULL
:
1172 case USB_SPEED_HIGH
:
1175 dev_dbg_f(&intf
->dev
, "Unknown USB speed\n");
1180 r
= usb_reset_device(udev
);
1183 "couldn't reset usb device. Error number %d\n", r
);
1187 hw
= zd_mac_alloc_hw(intf
);
1193 usb
= &zd_hw_mac(hw
)->chip
.usb
;
1194 usb
->is_zd1211b
= (id
->driver_info
== DEVICE_ZD1211B
) != 0;
1196 r
= zd_mac_preinit_hw(hw
);
1198 dev_dbg_f(&intf
->dev
,
1199 "couldn't initialize mac. Error number %d\n", r
);
1203 r
= ieee80211_register_hw(hw
);
1205 dev_dbg_f(&intf
->dev
,
1206 "couldn't register device. Error number %d\n", r
);
1210 dev_dbg_f(&intf
->dev
, "successful\n");
1211 dev_info(&intf
->dev
, "%s\n", wiphy_name(hw
->wiphy
));
1214 usb_reset_device(interface_to_usbdev(intf
));
1216 zd_mac_clear(zd_hw_mac(hw
));
1217 ieee80211_free_hw(hw
);
1222 static void disconnect(struct usb_interface
*intf
)
1224 struct ieee80211_hw
*hw
= zd_intf_to_hw(intf
);
1228 /* Either something really bad happened, or we're just dealing with
1229 * a DEVICE_INSTALLER. */
1233 mac
= zd_hw_mac(hw
);
1234 usb
= &mac
->chip
.usb
;
1236 dev_dbg_f(zd_usb_dev(usb
), "\n");
1238 ieee80211_unregister_hw(hw
);
1240 /* Just in case something has gone wrong! */
1241 zd_usb_disable_rx(usb
);
1242 zd_usb_disable_int(usb
);
1244 /* If the disconnect has been caused by a removal of the
1245 * driver module, the reset allows reloading of the driver. If the
1246 * reset will not be executed here, the upload of the firmware in the
1247 * probe function caused by the reloading of the driver will fail.
1249 usb_reset_device(interface_to_usbdev(intf
));
1252 ieee80211_free_hw(hw
);
1253 dev_dbg(&intf
->dev
, "disconnected\n");
1256 static struct usb_driver driver
= {
1257 .name
= KBUILD_MODNAME
,
1258 .id_table
= usb_ids
,
1260 .disconnect
= disconnect
,
1263 struct workqueue_struct
*zd_workqueue
;
1265 static int __init
usb_init(void)
1269 pr_debug("%s usb_init()\n", driver
.name
);
1271 zd_workqueue
= create_singlethread_workqueue(driver
.name
);
1272 if (zd_workqueue
== NULL
) {
1273 printk(KERN_ERR
"%s couldn't create workqueue\n", driver
.name
);
1277 r
= usb_register(&driver
);
1279 destroy_workqueue(zd_workqueue
);
1280 printk(KERN_ERR
"%s usb_register() failed. Error number %d\n",
1285 pr_debug("%s initialized\n", driver
.name
);
1289 static void __exit
usb_exit(void)
1291 pr_debug("%s usb_exit()\n", driver
.name
);
1292 usb_deregister(&driver
);
1293 destroy_workqueue(zd_workqueue
);
1296 module_init(usb_init
);
1297 module_exit(usb_exit
);
1299 static int usb_int_regs_length(unsigned int count
)
1301 return sizeof(struct usb_int_regs
) + count
* sizeof(struct reg_data
);
1304 static void prepare_read_regs_int(struct zd_usb
*usb
)
1306 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1308 spin_lock_irq(&intr
->lock
);
1309 intr
->read_regs_enabled
= 1;
1310 INIT_COMPLETION(intr
->read_regs
.completion
);
1311 spin_unlock_irq(&intr
->lock
);
1314 static void disable_read_regs_int(struct zd_usb
*usb
)
1316 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1318 spin_lock_irq(&intr
->lock
);
1319 intr
->read_regs_enabled
= 0;
1320 spin_unlock_irq(&intr
->lock
);
1323 static int get_results(struct zd_usb
*usb
, u16
*values
,
1324 struct usb_req_read_regs
*req
, unsigned int count
)
1328 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1329 struct read_regs_int
*rr
= &intr
->read_regs
;
1330 struct usb_int_regs
*regs
= (struct usb_int_regs
*)rr
->buffer
;
1332 spin_lock_irq(&intr
->lock
);
1335 /* The created block size seems to be larger than expected.
1336 * However results appear to be correct.
1338 if (rr
->length
< usb_int_regs_length(count
)) {
1339 dev_dbg_f(zd_usb_dev(usb
),
1340 "error: actual length %d less than expected %d\n",
1341 rr
->length
, usb_int_regs_length(count
));
1344 if (rr
->length
> sizeof(rr
->buffer
)) {
1345 dev_dbg_f(zd_usb_dev(usb
),
1346 "error: actual length %d exceeds buffer size %zu\n",
1347 rr
->length
, sizeof(rr
->buffer
));
1351 for (i
= 0; i
< count
; i
++) {
1352 struct reg_data
*rd
= ®s
->regs
[i
];
1353 if (rd
->addr
!= req
->addr
[i
]) {
1354 dev_dbg_f(zd_usb_dev(usb
),
1355 "rd[%d] addr %#06hx expected %#06hx\n", i
,
1356 le16_to_cpu(rd
->addr
),
1357 le16_to_cpu(req
->addr
[i
]));
1360 values
[i
] = le16_to_cpu(rd
->value
);
1365 spin_unlock_irq(&intr
->lock
);
1369 int zd_usb_ioread16v(struct zd_usb
*usb
, u16
*values
,
1370 const zd_addr_t
*addresses
, unsigned int count
)
1373 int i
, req_len
, actual_req_len
;
1374 struct usb_device
*udev
;
1375 struct usb_req_read_regs
*req
= NULL
;
1376 unsigned long timeout
;
1379 dev_dbg_f(zd_usb_dev(usb
), "error: count is zero\n");
1382 if (count
> USB_MAX_IOREAD16_COUNT
) {
1383 dev_dbg_f(zd_usb_dev(usb
),
1384 "error: count %u exceeds possible max %u\n",
1385 count
, USB_MAX_IOREAD16_COUNT
);
1389 dev_dbg_f(zd_usb_dev(usb
),
1390 "error: io in atomic context not supported\n");
1391 return -EWOULDBLOCK
;
1393 if (!usb_int_enabled(usb
)) {
1394 dev_dbg_f(zd_usb_dev(usb
),
1395 "error: usb interrupt not enabled\n");
1396 return -EWOULDBLOCK
;
1399 req_len
= sizeof(struct usb_req_read_regs
) + count
* sizeof(__le16
);
1400 req
= kmalloc(req_len
, GFP_KERNEL
);
1403 req
->id
= cpu_to_le16(USB_REQ_READ_REGS
);
1404 for (i
= 0; i
< count
; i
++)
1405 req
->addr
[i
] = cpu_to_le16((u16
)addresses
[i
]);
1407 udev
= zd_usb_to_usbdev(usb
);
1408 prepare_read_regs_int(usb
);
1409 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1410 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1412 dev_dbg_f(zd_usb_dev(usb
),
1413 "error in usb_bulk_msg(). Error number %d\n", r
);
1416 if (req_len
!= actual_req_len
) {
1417 dev_dbg_f(zd_usb_dev(usb
), "error in usb_bulk_msg()\n"
1418 " req_len %d != actual_req_len %d\n",
1419 req_len
, actual_req_len
);
1424 timeout
= wait_for_completion_timeout(&usb
->intr
.read_regs
.completion
,
1425 msecs_to_jiffies(1000));
1427 disable_read_regs_int(usb
);
1428 dev_dbg_f(zd_usb_dev(usb
), "read timed out\n");
1433 r
= get_results(usb
, values
, req
, count
);
1439 int zd_usb_iowrite16v(struct zd_usb
*usb
, const struct zd_ioreq16
*ioreqs
,
1443 struct usb_device
*udev
;
1444 struct usb_req_write_regs
*req
= NULL
;
1445 int i
, req_len
, actual_req_len
;
1449 if (count
> USB_MAX_IOWRITE16_COUNT
) {
1450 dev_dbg_f(zd_usb_dev(usb
),
1451 "error: count %u exceeds possible max %u\n",
1452 count
, USB_MAX_IOWRITE16_COUNT
);
1456 dev_dbg_f(zd_usb_dev(usb
),
1457 "error: io in atomic context not supported\n");
1458 return -EWOULDBLOCK
;
1461 req_len
= sizeof(struct usb_req_write_regs
) +
1462 count
* sizeof(struct reg_data
);
1463 req
= kmalloc(req_len
, GFP_KERNEL
);
1467 req
->id
= cpu_to_le16(USB_REQ_WRITE_REGS
);
1468 for (i
= 0; i
< count
; i
++) {
1469 struct reg_data
*rw
= &req
->reg_writes
[i
];
1470 rw
->addr
= cpu_to_le16((u16
)ioreqs
[i
].addr
);
1471 rw
->value
= cpu_to_le16(ioreqs
[i
].value
);
1474 udev
= zd_usb_to_usbdev(usb
);
1475 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1476 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1478 dev_dbg_f(zd_usb_dev(usb
),
1479 "error in usb_bulk_msg(). Error number %d\n", r
);
1482 if (req_len
!= actual_req_len
) {
1483 dev_dbg_f(zd_usb_dev(usb
),
1484 "error in usb_bulk_msg()"
1485 " req_len %d != actual_req_len %d\n",
1486 req_len
, actual_req_len
);
1491 /* FALL-THROUGH with r == 0 */
1497 int zd_usb_rfwrite(struct zd_usb
*usb
, u32 value
, u8 bits
)
1500 struct usb_device
*udev
;
1501 struct usb_req_rfwrite
*req
= NULL
;
1502 int i
, req_len
, actual_req_len
;
1503 u16 bit_value_template
;
1506 dev_dbg_f(zd_usb_dev(usb
),
1507 "error: io in atomic context not supported\n");
1508 return -EWOULDBLOCK
;
1510 if (bits
< USB_MIN_RFWRITE_BIT_COUNT
) {
1511 dev_dbg_f(zd_usb_dev(usb
),
1512 "error: bits %d are smaller than"
1513 " USB_MIN_RFWRITE_BIT_COUNT %d\n",
1514 bits
, USB_MIN_RFWRITE_BIT_COUNT
);
1517 if (bits
> USB_MAX_RFWRITE_BIT_COUNT
) {
1518 dev_dbg_f(zd_usb_dev(usb
),
1519 "error: bits %d exceed USB_MAX_RFWRITE_BIT_COUNT %d\n",
1520 bits
, USB_MAX_RFWRITE_BIT_COUNT
);
1524 if (value
& (~0UL << bits
)) {
1525 dev_dbg_f(zd_usb_dev(usb
),
1526 "error: value %#09x has bits >= %d set\n",
1532 dev_dbg_f(zd_usb_dev(usb
), "value %#09x bits %d\n", value
, bits
);
1534 r
= zd_usb_ioread16(usb
, &bit_value_template
, CR203
);
1536 dev_dbg_f(zd_usb_dev(usb
),
1537 "error %d: Couldn't read CR203\n", r
);
1540 bit_value_template
&= ~(RF_IF_LE
|RF_CLK
|RF_DATA
);
1542 req_len
= sizeof(struct usb_req_rfwrite
) + bits
* sizeof(__le16
);
1543 req
= kmalloc(req_len
, GFP_KERNEL
);
1547 req
->id
= cpu_to_le16(USB_REQ_WRITE_RF
);
1548 /* 1: 3683a, but not used in ZYDAS driver */
1549 req
->value
= cpu_to_le16(2);
1550 req
->bits
= cpu_to_le16(bits
);
1552 for (i
= 0; i
< bits
; i
++) {
1553 u16 bv
= bit_value_template
;
1554 if (value
& (1 << (bits
-1-i
)))
1556 req
->bit_values
[i
] = cpu_to_le16(bv
);
1559 udev
= zd_usb_to_usbdev(usb
);
1560 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1561 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1563 dev_dbg_f(zd_usb_dev(usb
),
1564 "error in usb_bulk_msg(). Error number %d\n", r
);
1567 if (req_len
!= actual_req_len
) {
1568 dev_dbg_f(zd_usb_dev(usb
), "error in usb_bulk_msg()"
1569 " req_len %d != actual_req_len %d\n",
1570 req_len
, actual_req_len
);
1575 /* FALL-THROUGH with r == 0 */