3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 #include <asm/unaligned.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/module.h>
22 #include <linux/firmware.h>
23 #include <linux/device.h>
24 #include <linux/errno.h>
25 #include <linux/skbuff.h>
26 #include <linux/usb.h>
27 #include <linux/workqueue.h>
28 #include <net/ieee80211.h>
31 #include "zd_netdev.h"
36 static struct usb_device_id usb_ids
[] = {
38 { USB_DEVICE(0x0ace, 0x1211), .driver_info
= DEVICE_ZD1211
},
39 { USB_DEVICE(0x07b8, 0x6001), .driver_info
= DEVICE_ZD1211
},
40 { USB_DEVICE(0x126f, 0xa006), .driver_info
= DEVICE_ZD1211
},
41 { USB_DEVICE(0x6891, 0xa727), .driver_info
= DEVICE_ZD1211
},
42 { USB_DEVICE(0x0df6, 0x9071), .driver_info
= DEVICE_ZD1211
},
43 { USB_DEVICE(0x157e, 0x300b), .driver_info
= DEVICE_ZD1211
},
44 { USB_DEVICE(0x079b, 0x004a), .driver_info
= DEVICE_ZD1211
},
45 { USB_DEVICE(0x1740, 0x2000), .driver_info
= DEVICE_ZD1211
},
46 { USB_DEVICE(0x157e, 0x3204), .driver_info
= DEVICE_ZD1211
},
47 { USB_DEVICE(0x0586, 0x3402), .driver_info
= DEVICE_ZD1211
},
48 { USB_DEVICE(0x0b3b, 0x5630), .driver_info
= DEVICE_ZD1211
},
49 { USB_DEVICE(0x0b05, 0x170c), .driver_info
= DEVICE_ZD1211
},
50 { USB_DEVICE(0x1435, 0x0711), .driver_info
= DEVICE_ZD1211
},
51 { USB_DEVICE(0x0586, 0x3409), .driver_info
= DEVICE_ZD1211
},
52 { USB_DEVICE(0x0b3b, 0x1630), .driver_info
= DEVICE_ZD1211
},
53 { USB_DEVICE(0x0586, 0x3401), .driver_info
= DEVICE_ZD1211
},
54 { USB_DEVICE(0x14ea, 0xab13), .driver_info
= DEVICE_ZD1211
},
55 { USB_DEVICE(0x13b1, 0x001e), .driver_info
= DEVICE_ZD1211
},
57 { USB_DEVICE(0x0ace, 0x1215), .driver_info
= DEVICE_ZD1211B
},
58 { USB_DEVICE(0x157e, 0x300d), .driver_info
= DEVICE_ZD1211B
},
59 { USB_DEVICE(0x079b, 0x0062), .driver_info
= DEVICE_ZD1211B
},
60 { USB_DEVICE(0x1582, 0x6003), .driver_info
= DEVICE_ZD1211B
},
61 { USB_DEVICE(0x050d, 0x705c), .driver_info
= DEVICE_ZD1211B
},
62 { USB_DEVICE(0x083a, 0x4505), .driver_info
= DEVICE_ZD1211B
},
63 { USB_DEVICE(0x0471, 0x1236), .driver_info
= DEVICE_ZD1211B
},
64 { USB_DEVICE(0x13b1, 0x0024), .driver_info
= DEVICE_ZD1211B
},
65 { USB_DEVICE(0x0586, 0x340f), .driver_info
= DEVICE_ZD1211B
},
66 { USB_DEVICE(0x0b05, 0x171b), .driver_info
= DEVICE_ZD1211B
},
67 { USB_DEVICE(0x0586, 0x3410), .driver_info
= DEVICE_ZD1211B
},
68 { USB_DEVICE(0x0baf, 0x0121), .driver_info
= DEVICE_ZD1211B
},
69 /* "Driverless" devices that need ejecting */
70 { USB_DEVICE(0x0ace, 0x2011), .driver_info
= DEVICE_INSTALLER
},
74 MODULE_LICENSE("GPL");
75 MODULE_DESCRIPTION("USB driver for devices with the ZD1211 chip.");
76 MODULE_AUTHOR("Ulrich Kunitz");
77 MODULE_AUTHOR("Daniel Drake");
78 MODULE_VERSION("1.0");
79 MODULE_DEVICE_TABLE(usb
, usb_ids
);
81 #define FW_ZD1211_PREFIX "zd1211/zd1211_"
82 #define FW_ZD1211B_PREFIX "zd1211/zd1211b_"
84 /* USB device initialization */
86 static int request_fw_file(
87 const struct firmware
**fw
, const char *name
, struct device
*device
)
91 dev_dbg_f(device
, "fw name %s\n", name
);
93 r
= request_firmware(fw
, name
, device
);
96 "Could not load firmware file %s. Error number %d\n",
101 static inline u16
get_bcdDevice(const struct usb_device
*udev
)
103 return le16_to_cpu(udev
->descriptor
.bcdDevice
);
106 enum upload_code_flags
{
110 /* Ensures that MAX_TRANSFER_SIZE is even. */
111 #define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
113 static int upload_code(struct usb_device
*udev
,
114 const u8
*data
, size_t size
, u16 code_offset
, int flags
)
119 /* USB request blocks need "kmalloced" buffers.
121 p
= kmalloc(MAX_TRANSFER_SIZE
, GFP_KERNEL
);
123 dev_err(&udev
->dev
, "out of memory\n");
130 size_t transfer_size
= size
<= MAX_TRANSFER_SIZE
?
131 size
: MAX_TRANSFER_SIZE
;
133 dev_dbg_f(&udev
->dev
, "transfer size %zu\n", transfer_size
);
135 memcpy(p
, data
, transfer_size
);
136 r
= usb_control_msg(udev
, usb_sndctrlpipe(udev
, 0),
137 USB_REQ_FIRMWARE_DOWNLOAD
,
138 USB_DIR_OUT
| USB_TYPE_VENDOR
,
139 code_offset
, 0, p
, transfer_size
, 1000 /* ms */);
142 "USB control request for firmware upload"
143 " failed. Error number %d\n", r
);
146 transfer_size
= r
& ~1;
148 size
-= transfer_size
;
149 data
+= transfer_size
;
150 code_offset
+= transfer_size
/sizeof(u16
);
153 if (flags
& REBOOT
) {
156 r
= usb_control_msg(udev
, usb_rcvctrlpipe(udev
, 0),
157 USB_REQ_FIRMWARE_CONFIRM
,
158 USB_DIR_IN
| USB_TYPE_VENDOR
,
159 0, 0, &ret
, sizeof(ret
), 5000 /* ms */);
160 if (r
!= sizeof(ret
)) {
162 "control request firmeware confirmation failed."
163 " Return value %d\n", r
);
170 "Internal error while downloading."
171 " Firmware confirm return value %#04x\n",
176 dev_dbg_f(&udev
->dev
, "firmware confirm return value %#04x\n",
186 static u16
get_word(const void *data
, u16 offset
)
188 const __le16
*p
= data
;
189 return le16_to_cpu(p
[offset
]);
192 static char *get_fw_name(char *buffer
, size_t size
, u8 device_type
,
195 scnprintf(buffer
, size
, "%s%s",
196 device_type
== DEVICE_ZD1211B
?
197 FW_ZD1211B_PREFIX
: FW_ZD1211_PREFIX
,
202 static int handle_version_mismatch(struct usb_device
*udev
, u8 device_type
,
203 const struct firmware
*ub_fw
)
205 const struct firmware
*ur_fw
= NULL
;
210 r
= request_fw_file(&ur_fw
,
211 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "ur"),
216 r
= upload_code(udev
, ur_fw
->data
, ur_fw
->size
, FW_START
, REBOOT
);
220 offset
= (E2P_BOOT_CODE_OFFSET
* sizeof(u16
));
221 r
= upload_code(udev
, ub_fw
->data
+ offset
, ub_fw
->size
- offset
,
222 E2P_START
+ E2P_BOOT_CODE_OFFSET
, REBOOT
);
224 /* At this point, the vendor driver downloads the whole firmware
225 * image, hacks around with version IDs, and uploads it again,
226 * completely overwriting the boot code. We do not do this here as
227 * it is not required on any tested devices, and it is suspected to
230 release_firmware(ur_fw
);
234 static int upload_firmware(struct usb_device
*udev
, u8 device_type
)
239 const struct firmware
*ub_fw
= NULL
;
240 const struct firmware
*uph_fw
= NULL
;
243 bcdDevice
= get_bcdDevice(udev
);
245 r
= request_fw_file(&ub_fw
,
246 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "ub"),
251 fw_bcdDevice
= get_word(ub_fw
->data
, E2P_DATA_OFFSET
);
253 if (fw_bcdDevice
!= bcdDevice
) {
255 "firmware version %#06x and device bootcode version "
256 "%#06x differ\n", fw_bcdDevice
, bcdDevice
);
257 if (bcdDevice
<= 0x4313)
258 dev_warn(&udev
->dev
, "device has old bootcode, please "
259 "report success or failure\n");
261 r
= handle_version_mismatch(udev
, device_type
, ub_fw
);
265 dev_dbg_f(&udev
->dev
,
266 "firmware device id %#06x is equal to the "
267 "actual device id\n", fw_bcdDevice
);
271 r
= request_fw_file(&uph_fw
,
272 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "uphr"),
277 r
= upload_code(udev
, uph_fw
->data
, uph_fw
->size
, FW_START
, REBOOT
);
280 "Could not upload firmware code uph. Error number %d\n",
286 release_firmware(ub_fw
);
287 release_firmware(uph_fw
);
291 #define urb_dev(urb) (&(urb)->dev->dev)
293 static inline void handle_regs_int(struct urb
*urb
)
295 struct zd_usb
*usb
= urb
->context
;
296 struct zd_usb_interrupt
*intr
= &usb
->intr
;
299 ZD_ASSERT(in_interrupt());
300 spin_lock(&intr
->lock
);
302 if (intr
->read_regs_enabled
) {
303 intr
->read_regs
.length
= len
= urb
->actual_length
;
305 if (len
> sizeof(intr
->read_regs
.buffer
))
306 len
= sizeof(intr
->read_regs
.buffer
);
307 memcpy(intr
->read_regs
.buffer
, urb
->transfer_buffer
, len
);
308 intr
->read_regs_enabled
= 0;
309 complete(&intr
->read_regs
.completion
);
313 dev_dbg_f(urb_dev(urb
), "regs interrupt ignored\n");
315 spin_unlock(&intr
->lock
);
318 static inline void handle_retry_failed_int(struct urb
*urb
)
320 struct zd_usb
*usb
= urb
->context
;
321 struct zd_mac
*mac
= zd_usb_to_mac(usb
);
322 struct ieee80211_device
*ieee
= zd_mac_to_ieee80211(mac
);
324 ieee
->stats
.tx_errors
++;
325 ieee
->ieee_stats
.tx_retry_limit_exceeded
++;
326 dev_dbg_f(urb_dev(urb
), "retry failed interrupt\n");
330 static void int_urb_complete(struct urb
*urb
)
333 struct usb_int_header
*hdr
;
335 switch (urb
->status
) {
349 if (urb
->actual_length
< sizeof(hdr
)) {
350 dev_dbg_f(urb_dev(urb
), "error: urb %p to small\n", urb
);
354 hdr
= urb
->transfer_buffer
;
355 if (hdr
->type
!= USB_INT_TYPE
) {
356 dev_dbg_f(urb_dev(urb
), "error: urb %p wrong type\n", urb
);
361 case USB_INT_ID_REGS
:
362 handle_regs_int(urb
);
364 case USB_INT_ID_RETRY_FAILED
:
365 handle_retry_failed_int(urb
);
368 dev_dbg_f(urb_dev(urb
), "error: urb %p unknown id %x\n", urb
,
369 (unsigned int)hdr
->id
);
374 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
376 dev_dbg_f(urb_dev(urb
), "resubmit urb %p\n", urb
);
381 kfree(urb
->transfer_buffer
);
384 static inline int int_urb_interval(struct usb_device
*udev
)
386 switch (udev
->speed
) {
397 static inline int usb_int_enabled(struct zd_usb
*usb
)
400 struct zd_usb_interrupt
*intr
= &usb
->intr
;
403 spin_lock_irqsave(&intr
->lock
, flags
);
405 spin_unlock_irqrestore(&intr
->lock
, flags
);
409 int zd_usb_enable_int(struct zd_usb
*usb
)
412 struct usb_device
*udev
;
413 struct zd_usb_interrupt
*intr
= &usb
->intr
;
414 void *transfer_buffer
= NULL
;
417 dev_dbg_f(zd_usb_dev(usb
), "\n");
419 urb
= usb_alloc_urb(0, GFP_KERNEL
);
425 ZD_ASSERT(!irqs_disabled());
426 spin_lock_irq(&intr
->lock
);
428 spin_unlock_irq(&intr
->lock
);
433 spin_unlock_irq(&intr
->lock
);
435 /* TODO: make it a DMA buffer */
437 transfer_buffer
= kmalloc(USB_MAX_EP_INT_BUFFER
, GFP_KERNEL
);
438 if (!transfer_buffer
) {
439 dev_dbg_f(zd_usb_dev(usb
),
440 "couldn't allocate transfer_buffer\n");
441 goto error_set_urb_null
;
444 udev
= zd_usb_to_usbdev(usb
);
445 usb_fill_int_urb(urb
, udev
, usb_rcvintpipe(udev
, EP_INT_IN
),
446 transfer_buffer
, USB_MAX_EP_INT_BUFFER
,
447 int_urb_complete
, usb
,
450 dev_dbg_f(zd_usb_dev(usb
), "submit urb %p\n", intr
->urb
);
451 r
= usb_submit_urb(urb
, GFP_KERNEL
);
453 dev_dbg_f(zd_usb_dev(usb
),
454 "Couldn't submit urb. Error number %d\n", r
);
460 kfree(transfer_buffer
);
462 spin_lock_irq(&intr
->lock
);
464 spin_unlock_irq(&intr
->lock
);
471 void zd_usb_disable_int(struct zd_usb
*usb
)
474 struct zd_usb_interrupt
*intr
= &usb
->intr
;
477 spin_lock_irqsave(&intr
->lock
, flags
);
480 spin_unlock_irqrestore(&intr
->lock
, flags
);
484 spin_unlock_irqrestore(&intr
->lock
, flags
);
487 dev_dbg_f(zd_usb_dev(usb
), "urb %p killed\n", urb
);
491 static void handle_rx_packet(struct zd_usb
*usb
, const u8
*buffer
,
495 struct zd_mac
*mac
= zd_usb_to_mac(usb
);
496 const struct rx_length_info
*length_info
;
498 if (length
< sizeof(struct rx_length_info
)) {
499 /* It's not a complete packet anyhow. */
500 struct ieee80211_device
*ieee
= zd_mac_to_ieee80211(mac
);
501 ieee
->stats
.rx_errors
++;
502 ieee
->stats
.rx_length_errors
++;
505 length_info
= (struct rx_length_info
*)
506 (buffer
+ length
- sizeof(struct rx_length_info
));
508 /* It might be that three frames are merged into a single URB
509 * transaction. We have to check for the length info tag.
511 * While testing we discovered that length_info might be unaligned,
512 * because if USB transactions are merged, the last packet will not
513 * be padded. Unaligned access might also happen if the length_info
514 * structure is not present.
516 if (get_unaligned(&length_info
->tag
) == cpu_to_le16(RX_LENGTH_INFO_TAG
))
518 unsigned int l
, k
, n
;
519 for (i
= 0, l
= 0;; i
++) {
520 k
= le16_to_cpu(get_unaligned(&length_info
->length
[i
]));
526 zd_mac_rx_irq(mac
, buffer
+l
, k
);
532 zd_mac_rx_irq(mac
, buffer
, length
);
536 static void rx_urb_complete(struct urb
*urb
)
539 struct zd_usb_rx
*rx
;
543 switch (urb
->status
) {
554 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
558 buffer
= urb
->transfer_buffer
;
559 length
= urb
->actual_length
;
563 if (length
%rx
->usb_packet_size
> rx
->usb_packet_size
-4) {
564 /* If there is an old first fragment, we don't care. */
565 dev_dbg_f(urb_dev(urb
), "*** first fragment ***\n");
566 ZD_ASSERT(length
<= ARRAY_SIZE(rx
->fragment
));
567 spin_lock(&rx
->lock
);
568 memcpy(rx
->fragment
, buffer
, length
);
569 rx
->fragment_length
= length
;
570 spin_unlock(&rx
->lock
);
574 spin_lock(&rx
->lock
);
575 if (rx
->fragment_length
> 0) {
576 /* We are on a second fragment, we believe */
577 ZD_ASSERT(length
+ rx
->fragment_length
<=
578 ARRAY_SIZE(rx
->fragment
));
579 dev_dbg_f(urb_dev(urb
), "*** second fragment ***\n");
580 memcpy(rx
->fragment
+rx
->fragment_length
, buffer
, length
);
581 handle_rx_packet(usb
, rx
->fragment
,
582 rx
->fragment_length
+ length
);
583 rx
->fragment_length
= 0;
584 spin_unlock(&rx
->lock
);
586 spin_unlock(&rx
->lock
);
587 handle_rx_packet(usb
, buffer
, length
);
591 usb_submit_urb(urb
, GFP_ATOMIC
);
594 static struct urb
*alloc_urb(struct zd_usb
*usb
)
596 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
600 urb
= usb_alloc_urb(0, GFP_KERNEL
);
603 buffer
= usb_buffer_alloc(udev
, USB_MAX_RX_SIZE
, GFP_KERNEL
,
610 usb_fill_bulk_urb(urb
, udev
, usb_rcvbulkpipe(udev
, EP_DATA_IN
),
611 buffer
, USB_MAX_RX_SIZE
,
612 rx_urb_complete
, usb
);
613 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
618 static void free_urb(struct urb
*urb
)
622 usb_buffer_free(urb
->dev
, urb
->transfer_buffer_length
,
623 urb
->transfer_buffer
, urb
->transfer_dma
);
627 int zd_usb_enable_rx(struct zd_usb
*usb
)
630 struct zd_usb_rx
*rx
= &usb
->rx
;
633 dev_dbg_f(zd_usb_dev(usb
), "\n");
636 urbs
= kcalloc(URBS_COUNT
, sizeof(struct urb
*), GFP_KERNEL
);
639 for (i
= 0; i
< URBS_COUNT
; i
++) {
640 urbs
[i
] = alloc_urb(usb
);
645 ZD_ASSERT(!irqs_disabled());
646 spin_lock_irq(&rx
->lock
);
648 spin_unlock_irq(&rx
->lock
);
653 rx
->urbs_count
= URBS_COUNT
;
654 spin_unlock_irq(&rx
->lock
);
656 for (i
= 0; i
< URBS_COUNT
; i
++) {
657 r
= usb_submit_urb(urbs
[i
], GFP_KERNEL
);
664 for (i
= 0; i
< URBS_COUNT
; i
++) {
665 usb_kill_urb(urbs
[i
]);
667 spin_lock_irq(&rx
->lock
);
670 spin_unlock_irq(&rx
->lock
);
673 for (i
= 0; i
< URBS_COUNT
; i
++)
679 void zd_usb_disable_rx(struct zd_usb
*usb
)
685 struct zd_usb_rx
*rx
= &usb
->rx
;
687 spin_lock_irqsave(&rx
->lock
, flags
);
689 count
= rx
->urbs_count
;
690 spin_unlock_irqrestore(&rx
->lock
, flags
);
694 for (i
= 0; i
< count
; i
++) {
695 usb_kill_urb(urbs
[i
]);
700 spin_lock_irqsave(&rx
->lock
, flags
);
703 spin_unlock_irqrestore(&rx
->lock
, flags
);
706 static void tx_urb_complete(struct urb
*urb
)
710 switch (urb
->status
) {
719 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
722 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
726 usb_buffer_free(urb
->dev
, urb
->transfer_buffer_length
,
727 urb
->transfer_buffer
, urb
->transfer_dma
);
731 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
733 dev_dbg_f(urb_dev(urb
), "error resubmit urb %p %d\n", urb
, r
);
738 /* Puts the frame on the USB endpoint. It doesn't wait for
739 * completion. The frame must contain the control set.
741 int zd_usb_tx(struct zd_usb
*usb
, const u8
*frame
, unsigned int length
)
744 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
748 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
754 buffer
= usb_buffer_alloc(zd_usb_to_usbdev(usb
), length
, GFP_ATOMIC
,
760 memcpy(buffer
, frame
, length
);
762 usb_fill_bulk_urb(urb
, udev
, usb_sndbulkpipe(udev
, EP_DATA_OUT
),
763 buffer
, length
, tx_urb_complete
, NULL
);
764 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
766 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
771 usb_buffer_free(zd_usb_to_usbdev(usb
), length
, buffer
,
779 static inline void init_usb_interrupt(struct zd_usb
*usb
)
781 struct zd_usb_interrupt
*intr
= &usb
->intr
;
783 spin_lock_init(&intr
->lock
);
784 intr
->interval
= int_urb_interval(zd_usb_to_usbdev(usb
));
785 init_completion(&intr
->read_regs
.completion
);
786 intr
->read_regs
.cr_int_addr
= cpu_to_le16((u16
)CR_INTERRUPT
);
789 static inline void init_usb_rx(struct zd_usb
*usb
)
791 struct zd_usb_rx
*rx
= &usb
->rx
;
792 spin_lock_init(&rx
->lock
);
793 if (interface_to_usbdev(usb
->intf
)->speed
== USB_SPEED_HIGH
) {
794 rx
->usb_packet_size
= 512;
796 rx
->usb_packet_size
= 64;
798 ZD_ASSERT(rx
->fragment_length
== 0);
801 static inline void init_usb_tx(struct zd_usb
*usb
)
803 /* FIXME: at this point we will allocate a fixed number of urb's for
804 * use in a cyclic scheme */
807 void zd_usb_init(struct zd_usb
*usb
, struct net_device
*netdev
,
808 struct usb_interface
*intf
)
810 memset(usb
, 0, sizeof(*usb
));
811 usb
->intf
= usb_get_intf(intf
);
812 usb_set_intfdata(usb
->intf
, netdev
);
813 init_usb_interrupt(usb
);
818 void zd_usb_clear(struct zd_usb
*usb
)
820 usb_set_intfdata(usb
->intf
, NULL
);
821 usb_put_intf(usb
->intf
);
822 ZD_MEMCLEAR(usb
, sizeof(*usb
));
823 /* FIXME: usb_interrupt, usb_tx, usb_rx? */
826 static const char *speed(enum usb_device_speed speed
)
836 return "unknown speed";
840 static int scnprint_id(struct usb_device
*udev
, char *buffer
, size_t size
)
842 return scnprintf(buffer
, size
, "%04hx:%04hx v%04hx %s",
843 le16_to_cpu(udev
->descriptor
.idVendor
),
844 le16_to_cpu(udev
->descriptor
.idProduct
),
849 int zd_usb_scnprint_id(struct zd_usb
*usb
, char *buffer
, size_t size
)
851 struct usb_device
*udev
= interface_to_usbdev(usb
->intf
);
852 return scnprint_id(udev
, buffer
, size
);
856 static void print_id(struct usb_device
*udev
)
860 scnprint_id(udev
, buffer
, sizeof(buffer
));
861 buffer
[sizeof(buffer
)-1] = 0;
862 dev_dbg_f(&udev
->dev
, "%s\n", buffer
);
865 #define print_id(udev) do { } while (0)
868 static int eject_installer(struct usb_interface
*intf
)
870 struct usb_device
*udev
= interface_to_usbdev(intf
);
871 struct usb_host_interface
*iface_desc
= &intf
->altsetting
[0];
872 struct usb_endpoint_descriptor
*endpoint
;
877 /* Find bulk out endpoint */
878 endpoint
= &iface_desc
->endpoint
[1].desc
;
879 if ((endpoint
->bEndpointAddress
& USB_TYPE_MASK
) == USB_DIR_OUT
&&
880 (endpoint
->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) ==
881 USB_ENDPOINT_XFER_BULK
) {
882 bulk_out_ep
= endpoint
->bEndpointAddress
;
885 "zd1211rw: Could not find bulk out endpoint\n");
889 cmd
= kzalloc(31, GFP_KERNEL
);
893 /* USB bulk command block */
894 cmd
[0] = 0x55; /* bulk command signature */
895 cmd
[1] = 0x53; /* bulk command signature */
896 cmd
[2] = 0x42; /* bulk command signature */
897 cmd
[3] = 0x43; /* bulk command signature */
898 cmd
[14] = 6; /* command length */
900 cmd
[15] = 0x1b; /* SCSI command: START STOP UNIT */
901 cmd
[19] = 0x2; /* eject disc */
903 dev_info(&udev
->dev
, "Ejecting virtual installer media...\n");
904 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, bulk_out_ep
),
905 cmd
, 31, NULL
, 2000);
910 /* At this point, the device disconnects and reconnects with the real
913 usb_set_intfdata(intf
, NULL
);
917 static int probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
920 struct usb_device
*udev
= interface_to_usbdev(intf
);
921 struct net_device
*netdev
= NULL
;
925 if (id
->driver_info
& DEVICE_INSTALLER
)
926 return eject_installer(intf
);
928 switch (udev
->speed
) {
934 dev_dbg_f(&intf
->dev
, "Unknown USB speed\n");
939 usb_reset_device(interface_to_usbdev(intf
));
941 netdev
= zd_netdev_alloc(intf
);
942 if (netdev
== NULL
) {
947 r
= upload_firmware(udev
, id
->driver_info
);
950 "couldn't load firmware. Error number %d\n", r
);
954 r
= usb_reset_configuration(udev
);
956 dev_dbg_f(&intf
->dev
,
957 "couldn't reset configuration. Error number %d\n", r
);
961 /* At this point the interrupt endpoint is not generally enabled. We
962 * save the USB bandwidth until the network device is opened. But
963 * notify that the initialization of the MAC will require the
964 * interrupts to be temporary enabled.
966 r
= zd_mac_init_hw(zd_netdev_mac(netdev
), id
->driver_info
);
968 dev_dbg_f(&intf
->dev
,
969 "couldn't initialize mac. Error number %d\n", r
);
973 r
= register_netdev(netdev
);
975 dev_dbg_f(&intf
->dev
,
976 "couldn't register netdev. Error number %d\n", r
);
980 dev_dbg_f(&intf
->dev
, "successful\n");
981 dev_info(&intf
->dev
,"%s\n", netdev
->name
);
984 usb_reset_device(interface_to_usbdev(intf
));
985 zd_netdev_free(netdev
);
989 static void disconnect(struct usb_interface
*intf
)
991 struct net_device
*netdev
= zd_intf_to_netdev(intf
);
992 struct zd_mac
*mac
= zd_netdev_mac(netdev
);
993 struct zd_usb
*usb
= &mac
->chip
.usb
;
995 /* Either something really bad happened, or we're just dealing with
996 * a DEVICE_INSTALLER. */
1000 dev_dbg_f(zd_usb_dev(usb
), "\n");
1002 zd_netdev_disconnect(netdev
);
1004 /* Just in case something has gone wrong! */
1005 zd_usb_disable_rx(usb
);
1006 zd_usb_disable_int(usb
);
1008 /* If the disconnect has been caused by a removal of the
1009 * driver module, the reset allows reloading of the driver. If the
1010 * reset will not be executed here, the upload of the firmware in the
1011 * probe function caused by the reloading of the driver will fail.
1013 usb_reset_device(interface_to_usbdev(intf
));
1015 zd_netdev_free(netdev
);
1016 dev_dbg(&intf
->dev
, "disconnected\n");
1019 static struct usb_driver driver
= {
1021 .id_table
= usb_ids
,
1023 .disconnect
= disconnect
,
1026 struct workqueue_struct
*zd_workqueue
;
1028 static int __init
usb_init(void)
1032 pr_debug("%s usb_init()\n", driver
.name
);
1034 zd_workqueue
= create_singlethread_workqueue(driver
.name
);
1035 if (zd_workqueue
== NULL
) {
1036 printk(KERN_ERR
"%s couldn't create workqueue\n", driver
.name
);
1040 r
= usb_register(&driver
);
1042 destroy_workqueue(zd_workqueue
);
1043 printk(KERN_ERR
"%s usb_register() failed. Error number %d\n",
1048 pr_debug("%s initialized\n", driver
.name
);
1052 static void __exit
usb_exit(void)
1054 pr_debug("%s usb_exit()\n", driver
.name
);
1055 usb_deregister(&driver
);
1056 destroy_workqueue(zd_workqueue
);
1059 module_init(usb_init
);
1060 module_exit(usb_exit
);
1062 static int usb_int_regs_length(unsigned int count
)
1064 return sizeof(struct usb_int_regs
) + count
* sizeof(struct reg_data
);
1067 static void prepare_read_regs_int(struct zd_usb
*usb
)
1069 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1071 spin_lock_irq(&intr
->lock
);
1072 intr
->read_regs_enabled
= 1;
1073 INIT_COMPLETION(intr
->read_regs
.completion
);
1074 spin_unlock_irq(&intr
->lock
);
1077 static void disable_read_regs_int(struct zd_usb
*usb
)
1079 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1081 spin_lock_irq(&intr
->lock
);
1082 intr
->read_regs_enabled
= 0;
1083 spin_unlock_irq(&intr
->lock
);
1086 static int get_results(struct zd_usb
*usb
, u16
*values
,
1087 struct usb_req_read_regs
*req
, unsigned int count
)
1091 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1092 struct read_regs_int
*rr
= &intr
->read_regs
;
1093 struct usb_int_regs
*regs
= (struct usb_int_regs
*)rr
->buffer
;
1095 spin_lock_irq(&intr
->lock
);
1098 /* The created block size seems to be larger than expected.
1099 * However results appear to be correct.
1101 if (rr
->length
< usb_int_regs_length(count
)) {
1102 dev_dbg_f(zd_usb_dev(usb
),
1103 "error: actual length %d less than expected %d\n",
1104 rr
->length
, usb_int_regs_length(count
));
1107 if (rr
->length
> sizeof(rr
->buffer
)) {
1108 dev_dbg_f(zd_usb_dev(usb
),
1109 "error: actual length %d exceeds buffer size %zu\n",
1110 rr
->length
, sizeof(rr
->buffer
));
1114 for (i
= 0; i
< count
; i
++) {
1115 struct reg_data
*rd
= ®s
->regs
[i
];
1116 if (rd
->addr
!= req
->addr
[i
]) {
1117 dev_dbg_f(zd_usb_dev(usb
),
1118 "rd[%d] addr %#06hx expected %#06hx\n", i
,
1119 le16_to_cpu(rd
->addr
),
1120 le16_to_cpu(req
->addr
[i
]));
1123 values
[i
] = le16_to_cpu(rd
->value
);
1128 spin_unlock_irq(&intr
->lock
);
1132 int zd_usb_ioread16v(struct zd_usb
*usb
, u16
*values
,
1133 const zd_addr_t
*addresses
, unsigned int count
)
1136 int i
, req_len
, actual_req_len
;
1137 struct usb_device
*udev
;
1138 struct usb_req_read_regs
*req
= NULL
;
1139 unsigned long timeout
;
1142 dev_dbg_f(zd_usb_dev(usb
), "error: count is zero\n");
1145 if (count
> USB_MAX_IOREAD16_COUNT
) {
1146 dev_dbg_f(zd_usb_dev(usb
),
1147 "error: count %u exceeds possible max %u\n",
1148 count
, USB_MAX_IOREAD16_COUNT
);
1152 dev_dbg_f(zd_usb_dev(usb
),
1153 "error: io in atomic context not supported\n");
1154 return -EWOULDBLOCK
;
1156 if (!usb_int_enabled(usb
)) {
1157 dev_dbg_f(zd_usb_dev(usb
),
1158 "error: usb interrupt not enabled\n");
1159 return -EWOULDBLOCK
;
1162 req_len
= sizeof(struct usb_req_read_regs
) + count
* sizeof(__le16
);
1163 req
= kmalloc(req_len
, GFP_KERNEL
);
1166 req
->id
= cpu_to_le16(USB_REQ_READ_REGS
);
1167 for (i
= 0; i
< count
; i
++)
1168 req
->addr
[i
] = cpu_to_le16((u16
)addresses
[i
]);
1170 udev
= zd_usb_to_usbdev(usb
);
1171 prepare_read_regs_int(usb
);
1172 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1173 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1175 dev_dbg_f(zd_usb_dev(usb
),
1176 "error in usb_bulk_msg(). Error number %d\n", r
);
1179 if (req_len
!= actual_req_len
) {
1180 dev_dbg_f(zd_usb_dev(usb
), "error in usb_bulk_msg()\n"
1181 " req_len %d != actual_req_len %d\n",
1182 req_len
, actual_req_len
);
1187 timeout
= wait_for_completion_timeout(&usb
->intr
.read_regs
.completion
,
1188 msecs_to_jiffies(1000));
1190 disable_read_regs_int(usb
);
1191 dev_dbg_f(zd_usb_dev(usb
), "read timed out\n");
1196 r
= get_results(usb
, values
, req
, count
);
1202 int zd_usb_iowrite16v(struct zd_usb
*usb
, const struct zd_ioreq16
*ioreqs
,
1206 struct usb_device
*udev
;
1207 struct usb_req_write_regs
*req
= NULL
;
1208 int i
, req_len
, actual_req_len
;
1212 if (count
> USB_MAX_IOWRITE16_COUNT
) {
1213 dev_dbg_f(zd_usb_dev(usb
),
1214 "error: count %u exceeds possible max %u\n",
1215 count
, USB_MAX_IOWRITE16_COUNT
);
1219 dev_dbg_f(zd_usb_dev(usb
),
1220 "error: io in atomic context not supported\n");
1221 return -EWOULDBLOCK
;
1224 req_len
= sizeof(struct usb_req_write_regs
) +
1225 count
* sizeof(struct reg_data
);
1226 req
= kmalloc(req_len
, GFP_KERNEL
);
1230 req
->id
= cpu_to_le16(USB_REQ_WRITE_REGS
);
1231 for (i
= 0; i
< count
; i
++) {
1232 struct reg_data
*rw
= &req
->reg_writes
[i
];
1233 rw
->addr
= cpu_to_le16((u16
)ioreqs
[i
].addr
);
1234 rw
->value
= cpu_to_le16(ioreqs
[i
].value
);
1237 udev
= zd_usb_to_usbdev(usb
);
1238 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1239 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1241 dev_dbg_f(zd_usb_dev(usb
),
1242 "error in usb_bulk_msg(). Error number %d\n", r
);
1245 if (req_len
!= actual_req_len
) {
1246 dev_dbg_f(zd_usb_dev(usb
),
1247 "error in usb_bulk_msg()"
1248 " req_len %d != actual_req_len %d\n",
1249 req_len
, actual_req_len
);
1254 /* FALL-THROUGH with r == 0 */
1260 int zd_usb_rfwrite(struct zd_usb
*usb
, u32 value
, u8 bits
)
1263 struct usb_device
*udev
;
1264 struct usb_req_rfwrite
*req
= NULL
;
1265 int i
, req_len
, actual_req_len
;
1266 u16 bit_value_template
;
1269 dev_dbg_f(zd_usb_dev(usb
),
1270 "error: io in atomic context not supported\n");
1271 return -EWOULDBLOCK
;
1273 if (bits
< USB_MIN_RFWRITE_BIT_COUNT
) {
1274 dev_dbg_f(zd_usb_dev(usb
),
1275 "error: bits %d are smaller than"
1276 " USB_MIN_RFWRITE_BIT_COUNT %d\n",
1277 bits
, USB_MIN_RFWRITE_BIT_COUNT
);
1280 if (bits
> USB_MAX_RFWRITE_BIT_COUNT
) {
1281 dev_dbg_f(zd_usb_dev(usb
),
1282 "error: bits %d exceed USB_MAX_RFWRITE_BIT_COUNT %d\n",
1283 bits
, USB_MAX_RFWRITE_BIT_COUNT
);
1287 if (value
& (~0UL << bits
)) {
1288 dev_dbg_f(zd_usb_dev(usb
),
1289 "error: value %#09x has bits >= %d set\n",
1295 dev_dbg_f(zd_usb_dev(usb
), "value %#09x bits %d\n", value
, bits
);
1297 r
= zd_usb_ioread16(usb
, &bit_value_template
, CR203
);
1299 dev_dbg_f(zd_usb_dev(usb
),
1300 "error %d: Couldn't read CR203\n", r
);
1303 bit_value_template
&= ~(RF_IF_LE
|RF_CLK
|RF_DATA
);
1305 req_len
= sizeof(struct usb_req_rfwrite
) + bits
* sizeof(__le16
);
1306 req
= kmalloc(req_len
, GFP_KERNEL
);
1310 req
->id
= cpu_to_le16(USB_REQ_WRITE_RF
);
1311 /* 1: 3683a, but not used in ZYDAS driver */
1312 req
->value
= cpu_to_le16(2);
1313 req
->bits
= cpu_to_le16(bits
);
1315 for (i
= 0; i
< bits
; i
++) {
1316 u16 bv
= bit_value_template
;
1317 if (value
& (1 << (bits
-1-i
)))
1319 req
->bit_values
[i
] = cpu_to_le16(bv
);
1322 udev
= zd_usb_to_usbdev(usb
);
1323 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1324 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1326 dev_dbg_f(zd_usb_dev(usb
),
1327 "error in usb_bulk_msg(). Error number %d\n", r
);
1330 if (req_len
!= actual_req_len
) {
1331 dev_dbg_f(zd_usb_dev(usb
), "error in usb_bulk_msg()"
1332 " req_len %d != actual_req_len %d\n",
1333 req_len
, actual_req_len
);
1338 /* FALL-THROUGH with r == 0 */