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
},
56 { USB_DEVICE(0x0ace, 0x1215), .driver_info
= DEVICE_ZD1211B
},
57 { USB_DEVICE(0x157e, 0x300d), .driver_info
= DEVICE_ZD1211B
},
58 { USB_DEVICE(0x079b, 0x0062), .driver_info
= DEVICE_ZD1211B
},
59 { USB_DEVICE(0x1582, 0x6003), .driver_info
= DEVICE_ZD1211B
},
60 { USB_DEVICE(0x050d, 0x705c), .driver_info
= DEVICE_ZD1211B
},
61 { USB_DEVICE(0x083a, 0x4505), .driver_info
= DEVICE_ZD1211B
},
62 { USB_DEVICE(0x0471, 0x1236), .driver_info
= DEVICE_ZD1211B
},
63 { USB_DEVICE(0x13b1, 0x0024), .driver_info
= DEVICE_ZD1211B
},
64 { USB_DEVICE(0x0586, 0x340f), .driver_info
= DEVICE_ZD1211B
},
65 /* "Driverless" devices that need ejecting */
66 { USB_DEVICE(0x0ace, 0x2011), .driver_info
= DEVICE_INSTALLER
},
70 MODULE_LICENSE("GPL");
71 MODULE_DESCRIPTION("USB driver for devices with the ZD1211 chip.");
72 MODULE_AUTHOR("Ulrich Kunitz");
73 MODULE_AUTHOR("Daniel Drake");
74 MODULE_VERSION("1.0");
75 MODULE_DEVICE_TABLE(usb
, usb_ids
);
77 #define FW_ZD1211_PREFIX "zd1211/zd1211_"
78 #define FW_ZD1211B_PREFIX "zd1211/zd1211b_"
80 /* USB device initialization */
82 static int request_fw_file(
83 const struct firmware
**fw
, const char *name
, struct device
*device
)
87 dev_dbg_f(device
, "fw name %s\n", name
);
89 r
= request_firmware(fw
, name
, device
);
92 "Could not load firmware file %s. Error number %d\n",
97 static inline u16
get_bcdDevice(const struct usb_device
*udev
)
99 return le16_to_cpu(udev
->descriptor
.bcdDevice
);
102 enum upload_code_flags
{
106 /* Ensures that MAX_TRANSFER_SIZE is even. */
107 #define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
109 static int upload_code(struct usb_device
*udev
,
110 const u8
*data
, size_t size
, u16 code_offset
, int flags
)
115 /* USB request blocks need "kmalloced" buffers.
117 p
= kmalloc(MAX_TRANSFER_SIZE
, GFP_KERNEL
);
119 dev_err(&udev
->dev
, "out of memory\n");
126 size_t transfer_size
= size
<= MAX_TRANSFER_SIZE
?
127 size
: MAX_TRANSFER_SIZE
;
129 dev_dbg_f(&udev
->dev
, "transfer size %zu\n", transfer_size
);
131 memcpy(p
, data
, transfer_size
);
132 r
= usb_control_msg(udev
, usb_sndctrlpipe(udev
, 0),
133 USB_REQ_FIRMWARE_DOWNLOAD
,
134 USB_DIR_OUT
| USB_TYPE_VENDOR
,
135 code_offset
, 0, p
, transfer_size
, 1000 /* ms */);
138 "USB control request for firmware upload"
139 " failed. Error number %d\n", r
);
142 transfer_size
= r
& ~1;
144 size
-= transfer_size
;
145 data
+= transfer_size
;
146 code_offset
+= transfer_size
/sizeof(u16
);
149 if (flags
& REBOOT
) {
152 r
= usb_control_msg(udev
, usb_rcvctrlpipe(udev
, 0),
153 USB_REQ_FIRMWARE_CONFIRM
,
154 USB_DIR_IN
| USB_TYPE_VENDOR
,
155 0, 0, &ret
, sizeof(ret
), 5000 /* ms */);
156 if (r
!= sizeof(ret
)) {
158 "control request firmeware confirmation failed."
159 " Return value %d\n", r
);
166 "Internal error while downloading."
167 " Firmware confirm return value %#04x\n",
172 dev_dbg_f(&udev
->dev
, "firmware confirm return value %#04x\n",
182 static u16
get_word(const void *data
, u16 offset
)
184 const __le16
*p
= data
;
185 return le16_to_cpu(p
[offset
]);
188 static char *get_fw_name(char *buffer
, size_t size
, u8 device_type
,
191 scnprintf(buffer
, size
, "%s%s",
192 device_type
== DEVICE_ZD1211B
?
193 FW_ZD1211B_PREFIX
: FW_ZD1211_PREFIX
,
198 static int handle_version_mismatch(struct usb_device
*udev
, u8 device_type
,
199 const struct firmware
*ub_fw
)
201 const struct firmware
*ur_fw
= NULL
;
206 r
= request_fw_file(&ur_fw
,
207 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "ur"),
212 r
= upload_code(udev
, ur_fw
->data
, ur_fw
->size
, FW_START
, REBOOT
);
216 offset
= (E2P_BOOT_CODE_OFFSET
* sizeof(u16
));
217 r
= upload_code(udev
, ub_fw
->data
+ offset
, ub_fw
->size
- offset
,
218 E2P_START
+ E2P_BOOT_CODE_OFFSET
, REBOOT
);
220 /* At this point, the vendor driver downloads the whole firmware
221 * image, hacks around with version IDs, and uploads it again,
222 * completely overwriting the boot code. We do not do this here as
223 * it is not required on any tested devices, and it is suspected to
226 release_firmware(ur_fw
);
230 static int upload_firmware(struct usb_device
*udev
, u8 device_type
)
235 const struct firmware
*ub_fw
= NULL
;
236 const struct firmware
*uph_fw
= NULL
;
239 bcdDevice
= get_bcdDevice(udev
);
241 r
= request_fw_file(&ub_fw
,
242 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "ub"),
247 fw_bcdDevice
= get_word(ub_fw
->data
, E2P_DATA_OFFSET
);
249 if (fw_bcdDevice
!= bcdDevice
) {
251 "firmware version %#06x and device bootcode version "
252 "%#06x differ\n", fw_bcdDevice
, bcdDevice
);
253 if (bcdDevice
<= 0x4313)
254 dev_warn(&udev
->dev
, "device has old bootcode, please "
255 "report success or failure\n");
257 r
= handle_version_mismatch(udev
, device_type
, ub_fw
);
261 dev_dbg_f(&udev
->dev
,
262 "firmware device id %#06x is equal to the "
263 "actual device id\n", fw_bcdDevice
);
267 r
= request_fw_file(&uph_fw
,
268 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "uphr"),
273 r
= upload_code(udev
, uph_fw
->data
, uph_fw
->size
, FW_START
, REBOOT
);
276 "Could not upload firmware code uph. Error number %d\n",
282 release_firmware(ub_fw
);
283 release_firmware(uph_fw
);
287 #define urb_dev(urb) (&(urb)->dev->dev)
289 static inline void handle_regs_int(struct urb
*urb
)
291 struct zd_usb
*usb
= urb
->context
;
292 struct zd_usb_interrupt
*intr
= &usb
->intr
;
295 ZD_ASSERT(in_interrupt());
296 spin_lock(&intr
->lock
);
298 if (intr
->read_regs_enabled
) {
299 intr
->read_regs
.length
= len
= urb
->actual_length
;
301 if (len
> sizeof(intr
->read_regs
.buffer
))
302 len
= sizeof(intr
->read_regs
.buffer
);
303 memcpy(intr
->read_regs
.buffer
, urb
->transfer_buffer
, len
);
304 intr
->read_regs_enabled
= 0;
305 complete(&intr
->read_regs
.completion
);
309 dev_dbg_f(urb_dev(urb
), "regs interrupt ignored\n");
311 spin_unlock(&intr
->lock
);
314 static inline void handle_retry_failed_int(struct urb
*urb
)
316 struct zd_usb
*usb
= urb
->context
;
317 struct zd_mac
*mac
= zd_usb_to_mac(usb
);
318 struct ieee80211_device
*ieee
= zd_mac_to_ieee80211(mac
);
320 ieee
->stats
.tx_errors
++;
321 ieee
->ieee_stats
.tx_retry_limit_exceeded
++;
322 dev_dbg_f(urb_dev(urb
), "retry failed interrupt\n");
326 static void int_urb_complete(struct urb
*urb
)
329 struct usb_int_header
*hdr
;
331 switch (urb
->status
) {
345 if (urb
->actual_length
< sizeof(hdr
)) {
346 dev_dbg_f(urb_dev(urb
), "error: urb %p to small\n", urb
);
350 hdr
= urb
->transfer_buffer
;
351 if (hdr
->type
!= USB_INT_TYPE
) {
352 dev_dbg_f(urb_dev(urb
), "error: urb %p wrong type\n", urb
);
357 case USB_INT_ID_REGS
:
358 handle_regs_int(urb
);
360 case USB_INT_ID_RETRY_FAILED
:
361 handle_retry_failed_int(urb
);
364 dev_dbg_f(urb_dev(urb
), "error: urb %p unknown id %x\n", urb
,
365 (unsigned int)hdr
->id
);
370 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
372 dev_dbg_f(urb_dev(urb
), "resubmit urb %p\n", urb
);
377 kfree(urb
->transfer_buffer
);
380 static inline int int_urb_interval(struct usb_device
*udev
)
382 switch (udev
->speed
) {
393 static inline int usb_int_enabled(struct zd_usb
*usb
)
396 struct zd_usb_interrupt
*intr
= &usb
->intr
;
399 spin_lock_irqsave(&intr
->lock
, flags
);
401 spin_unlock_irqrestore(&intr
->lock
, flags
);
405 int zd_usb_enable_int(struct zd_usb
*usb
)
408 struct usb_device
*udev
;
409 struct zd_usb_interrupt
*intr
= &usb
->intr
;
410 void *transfer_buffer
= NULL
;
413 dev_dbg_f(zd_usb_dev(usb
), "\n");
415 urb
= usb_alloc_urb(0, GFP_NOFS
);
421 ZD_ASSERT(!irqs_disabled());
422 spin_lock_irq(&intr
->lock
);
424 spin_unlock_irq(&intr
->lock
);
429 spin_unlock_irq(&intr
->lock
);
431 /* TODO: make it a DMA buffer */
433 transfer_buffer
= kmalloc(USB_MAX_EP_INT_BUFFER
, GFP_NOFS
);
434 if (!transfer_buffer
) {
435 dev_dbg_f(zd_usb_dev(usb
),
436 "couldn't allocate transfer_buffer\n");
437 goto error_set_urb_null
;
440 udev
= zd_usb_to_usbdev(usb
);
441 usb_fill_int_urb(urb
, udev
, usb_rcvintpipe(udev
, EP_INT_IN
),
442 transfer_buffer
, USB_MAX_EP_INT_BUFFER
,
443 int_urb_complete
, usb
,
446 dev_dbg_f(zd_usb_dev(usb
), "submit urb %p\n", intr
->urb
);
447 r
= usb_submit_urb(urb
, GFP_NOFS
);
449 dev_dbg_f(zd_usb_dev(usb
),
450 "Couldn't submit urb. Error number %d\n", r
);
456 kfree(transfer_buffer
);
458 spin_lock_irq(&intr
->lock
);
460 spin_unlock_irq(&intr
->lock
);
467 void zd_usb_disable_int(struct zd_usb
*usb
)
470 struct zd_usb_interrupt
*intr
= &usb
->intr
;
473 spin_lock_irqsave(&intr
->lock
, flags
);
476 spin_unlock_irqrestore(&intr
->lock
, flags
);
480 spin_unlock_irqrestore(&intr
->lock
, flags
);
483 dev_dbg_f(zd_usb_dev(usb
), "urb %p killed\n", urb
);
487 static void handle_rx_packet(struct zd_usb
*usb
, const u8
*buffer
,
491 struct zd_mac
*mac
= zd_usb_to_mac(usb
);
492 const struct rx_length_info
*length_info
;
494 if (length
< sizeof(struct rx_length_info
)) {
495 /* It's not a complete packet anyhow. */
496 struct ieee80211_device
*ieee
= zd_mac_to_ieee80211(mac
);
497 ieee
->stats
.rx_errors
++;
498 ieee
->stats
.rx_length_errors
++;
501 length_info
= (struct rx_length_info
*)
502 (buffer
+ length
- sizeof(struct rx_length_info
));
504 /* It might be that three frames are merged into a single URB
505 * transaction. We have to check for the length info tag.
507 * While testing we discovered that length_info might be unaligned,
508 * because if USB transactions are merged, the last packet will not
509 * be padded. Unaligned access might also happen if the length_info
510 * structure is not present.
512 if (get_unaligned(&length_info
->tag
) == cpu_to_le16(RX_LENGTH_INFO_TAG
))
514 unsigned int l
, k
, n
;
515 for (i
= 0, l
= 0;; i
++) {
516 k
= le16_to_cpu(get_unaligned(&length_info
->length
[i
]));
522 zd_mac_rx_irq(mac
, buffer
+l
, k
);
528 zd_mac_rx_irq(mac
, buffer
, length
);
532 static void rx_urb_complete(struct urb
*urb
)
535 struct zd_usb_rx
*rx
;
539 switch (urb
->status
) {
550 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
554 buffer
= urb
->transfer_buffer
;
555 length
= urb
->actual_length
;
559 if (length
%rx
->usb_packet_size
> rx
->usb_packet_size
-4) {
560 /* If there is an old first fragment, we don't care. */
561 dev_dbg_f(urb_dev(urb
), "*** first fragment ***\n");
562 ZD_ASSERT(length
<= ARRAY_SIZE(rx
->fragment
));
563 spin_lock(&rx
->lock
);
564 memcpy(rx
->fragment
, buffer
, length
);
565 rx
->fragment_length
= length
;
566 spin_unlock(&rx
->lock
);
570 spin_lock(&rx
->lock
);
571 if (rx
->fragment_length
> 0) {
572 /* We are on a second fragment, we believe */
573 ZD_ASSERT(length
+ rx
->fragment_length
<=
574 ARRAY_SIZE(rx
->fragment
));
575 dev_dbg_f(urb_dev(urb
), "*** second fragment ***\n");
576 memcpy(rx
->fragment
+rx
->fragment_length
, buffer
, length
);
577 handle_rx_packet(usb
, rx
->fragment
,
578 rx
->fragment_length
+ length
);
579 rx
->fragment_length
= 0;
580 spin_unlock(&rx
->lock
);
582 spin_unlock(&rx
->lock
);
583 handle_rx_packet(usb
, buffer
, length
);
587 usb_submit_urb(urb
, GFP_ATOMIC
);
590 static struct urb
*alloc_urb(struct zd_usb
*usb
)
592 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
596 urb
= usb_alloc_urb(0, GFP_NOFS
);
599 buffer
= usb_buffer_alloc(udev
, USB_MAX_RX_SIZE
, GFP_NOFS
,
606 usb_fill_bulk_urb(urb
, udev
, usb_rcvbulkpipe(udev
, EP_DATA_IN
),
607 buffer
, USB_MAX_RX_SIZE
,
608 rx_urb_complete
, usb
);
609 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
614 static void free_urb(struct urb
*urb
)
618 usb_buffer_free(urb
->dev
, urb
->transfer_buffer_length
,
619 urb
->transfer_buffer
, urb
->transfer_dma
);
623 int zd_usb_enable_rx(struct zd_usb
*usb
)
626 struct zd_usb_rx
*rx
= &usb
->rx
;
629 dev_dbg_f(zd_usb_dev(usb
), "\n");
632 urbs
= kcalloc(URBS_COUNT
, sizeof(struct urb
*), GFP_NOFS
);
635 for (i
= 0; i
< URBS_COUNT
; i
++) {
636 urbs
[i
] = alloc_urb(usb
);
641 ZD_ASSERT(!irqs_disabled());
642 spin_lock_irq(&rx
->lock
);
644 spin_unlock_irq(&rx
->lock
);
649 rx
->urbs_count
= URBS_COUNT
;
650 spin_unlock_irq(&rx
->lock
);
652 for (i
= 0; i
< URBS_COUNT
; i
++) {
653 r
= usb_submit_urb(urbs
[i
], GFP_NOFS
);
660 for (i
= 0; i
< URBS_COUNT
; i
++) {
661 usb_kill_urb(urbs
[i
]);
663 spin_lock_irq(&rx
->lock
);
666 spin_unlock_irq(&rx
->lock
);
669 for (i
= 0; i
< URBS_COUNT
; i
++)
675 void zd_usb_disable_rx(struct zd_usb
*usb
)
681 struct zd_usb_rx
*rx
= &usb
->rx
;
683 spin_lock_irqsave(&rx
->lock
, flags
);
685 count
= rx
->urbs_count
;
686 spin_unlock_irqrestore(&rx
->lock
, flags
);
690 for (i
= 0; i
< count
; i
++) {
691 usb_kill_urb(urbs
[i
]);
696 spin_lock_irqsave(&rx
->lock
, flags
);
699 spin_unlock_irqrestore(&rx
->lock
, flags
);
702 static void tx_urb_complete(struct urb
*urb
)
706 switch (urb
->status
) {
715 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
718 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
722 usb_buffer_free(urb
->dev
, urb
->transfer_buffer_length
,
723 urb
->transfer_buffer
, urb
->transfer_dma
);
727 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
729 dev_dbg_f(urb_dev(urb
), "error resubmit urb %p %d\n", urb
, r
);
734 /* Puts the frame on the USB endpoint. It doesn't wait for
735 * completion. The frame must contain the control set.
737 int zd_usb_tx(struct zd_usb
*usb
, const u8
*frame
, unsigned int length
)
740 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
744 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
750 buffer
= usb_buffer_alloc(zd_usb_to_usbdev(usb
), length
, GFP_ATOMIC
,
756 memcpy(buffer
, frame
, length
);
758 usb_fill_bulk_urb(urb
, udev
, usb_sndbulkpipe(udev
, EP_DATA_OUT
),
759 buffer
, length
, tx_urb_complete
, NULL
);
760 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
762 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
767 usb_buffer_free(zd_usb_to_usbdev(usb
), length
, buffer
,
775 static inline void init_usb_interrupt(struct zd_usb
*usb
)
777 struct zd_usb_interrupt
*intr
= &usb
->intr
;
779 spin_lock_init(&intr
->lock
);
780 intr
->interval
= int_urb_interval(zd_usb_to_usbdev(usb
));
781 init_completion(&intr
->read_regs
.completion
);
782 intr
->read_regs
.cr_int_addr
= cpu_to_le16((u16
)CR_INTERRUPT
);
785 static inline void init_usb_rx(struct zd_usb
*usb
)
787 struct zd_usb_rx
*rx
= &usb
->rx
;
788 spin_lock_init(&rx
->lock
);
789 if (interface_to_usbdev(usb
->intf
)->speed
== USB_SPEED_HIGH
) {
790 rx
->usb_packet_size
= 512;
792 rx
->usb_packet_size
= 64;
794 ZD_ASSERT(rx
->fragment_length
== 0);
797 static inline void init_usb_tx(struct zd_usb
*usb
)
799 /* FIXME: at this point we will allocate a fixed number of urb's for
800 * use in a cyclic scheme */
803 void zd_usb_init(struct zd_usb
*usb
, struct net_device
*netdev
,
804 struct usb_interface
*intf
)
806 memset(usb
, 0, sizeof(*usb
));
807 usb
->intf
= usb_get_intf(intf
);
808 usb_set_intfdata(usb
->intf
, netdev
);
809 init_usb_interrupt(usb
);
814 void zd_usb_clear(struct zd_usb
*usb
)
816 usb_set_intfdata(usb
->intf
, NULL
);
817 usb_put_intf(usb
->intf
);
818 ZD_MEMCLEAR(usb
, sizeof(*usb
));
819 /* FIXME: usb_interrupt, usb_tx, usb_rx? */
822 static const char *speed(enum usb_device_speed speed
)
832 return "unknown speed";
836 static int scnprint_id(struct usb_device
*udev
, char *buffer
, size_t size
)
838 return scnprintf(buffer
, size
, "%04hx:%04hx v%04hx %s",
839 le16_to_cpu(udev
->descriptor
.idVendor
),
840 le16_to_cpu(udev
->descriptor
.idProduct
),
845 int zd_usb_scnprint_id(struct zd_usb
*usb
, char *buffer
, size_t size
)
847 struct usb_device
*udev
= interface_to_usbdev(usb
->intf
);
848 return scnprint_id(udev
, buffer
, size
);
852 static void print_id(struct usb_device
*udev
)
856 scnprint_id(udev
, buffer
, sizeof(buffer
));
857 buffer
[sizeof(buffer
)-1] = 0;
858 dev_dbg_f(&udev
->dev
, "%s\n", buffer
);
861 #define print_id(udev) do { } while (0)
864 static int eject_installer(struct usb_interface
*intf
)
866 struct usb_device
*udev
= interface_to_usbdev(intf
);
867 struct usb_host_interface
*iface_desc
= &intf
->altsetting
[0];
868 struct usb_endpoint_descriptor
*endpoint
;
873 /* Find bulk out endpoint */
874 endpoint
= &iface_desc
->endpoint
[1].desc
;
875 if ((endpoint
->bEndpointAddress
& USB_TYPE_MASK
) == USB_DIR_OUT
&&
876 (endpoint
->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) ==
877 USB_ENDPOINT_XFER_BULK
) {
878 bulk_out_ep
= endpoint
->bEndpointAddress
;
881 "zd1211rw: Could not find bulk out endpoint\n");
885 cmd
= kzalloc(31, GFP_KERNEL
);
889 /* USB bulk command block */
890 cmd
[0] = 0x55; /* bulk command signature */
891 cmd
[1] = 0x53; /* bulk command signature */
892 cmd
[2] = 0x42; /* bulk command signature */
893 cmd
[3] = 0x43; /* bulk command signature */
894 cmd
[14] = 6; /* command length */
896 cmd
[15] = 0x1b; /* SCSI command: START STOP UNIT */
897 cmd
[19] = 0x2; /* eject disc */
899 dev_info(&udev
->dev
, "Ejecting virtual installer media...\n");
900 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, bulk_out_ep
),
901 cmd
, 31, NULL
, 2000);
906 /* At this point, the device disconnects and reconnects with the real
909 usb_set_intfdata(intf
, NULL
);
913 static int probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
916 struct usb_device
*udev
= interface_to_usbdev(intf
);
917 struct net_device
*netdev
= NULL
;
921 if (id
->driver_info
& DEVICE_INSTALLER
)
922 return eject_installer(intf
);
924 switch (udev
->speed
) {
930 dev_dbg_f(&intf
->dev
, "Unknown USB speed\n");
935 usb_reset_device(interface_to_usbdev(intf
));
937 netdev
= zd_netdev_alloc(intf
);
938 if (netdev
== NULL
) {
943 r
= upload_firmware(udev
, id
->driver_info
);
946 "couldn't load firmware. Error number %d\n", r
);
950 r
= usb_reset_configuration(udev
);
952 dev_dbg_f(&intf
->dev
,
953 "couldn't reset configuration. Error number %d\n", r
);
957 /* At this point the interrupt endpoint is not generally enabled. We
958 * save the USB bandwidth until the network device is opened. But
959 * notify that the initialization of the MAC will require the
960 * interrupts to be temporary enabled.
962 r
= zd_mac_init_hw(zd_netdev_mac(netdev
), id
->driver_info
);
964 dev_dbg_f(&intf
->dev
,
965 "couldn't initialize mac. Error number %d\n", r
);
969 r
= register_netdev(netdev
);
971 dev_dbg_f(&intf
->dev
,
972 "couldn't register netdev. Error number %d\n", r
);
976 dev_dbg_f(&intf
->dev
, "successful\n");
977 dev_info(&intf
->dev
,"%s\n", netdev
->name
);
980 usb_reset_device(interface_to_usbdev(intf
));
981 zd_netdev_free(netdev
);
985 static void disconnect(struct usb_interface
*intf
)
987 struct net_device
*netdev
= zd_intf_to_netdev(intf
);
988 struct zd_mac
*mac
= zd_netdev_mac(netdev
);
989 struct zd_usb
*usb
= &mac
->chip
.usb
;
991 /* Either something really bad happened, or we're just dealing with
992 * a DEVICE_INSTALLER. */
996 dev_dbg_f(zd_usb_dev(usb
), "\n");
998 zd_netdev_disconnect(netdev
);
1000 /* Just in case something has gone wrong! */
1001 zd_usb_disable_rx(usb
);
1002 zd_usb_disable_int(usb
);
1004 /* If the disconnect has been caused by a removal of the
1005 * driver module, the reset allows reloading of the driver. If the
1006 * reset will not be executed here, the upload of the firmware in the
1007 * probe function caused by the reloading of the driver will fail.
1009 usb_reset_device(interface_to_usbdev(intf
));
1011 zd_netdev_free(netdev
);
1012 dev_dbg(&intf
->dev
, "disconnected\n");
1015 static struct usb_driver driver
= {
1017 .id_table
= usb_ids
,
1019 .disconnect
= disconnect
,
1022 struct workqueue_struct
*zd_workqueue
;
1024 static int __init
usb_init(void)
1028 pr_debug("%s usb_init()\n", driver
.name
);
1030 zd_workqueue
= create_singlethread_workqueue(driver
.name
);
1031 if (zd_workqueue
== NULL
) {
1032 printk(KERN_ERR
"%s couldn't create workqueue\n", driver
.name
);
1036 r
= usb_register(&driver
);
1038 destroy_workqueue(zd_workqueue
);
1039 printk(KERN_ERR
"%s usb_register() failed. Error number %d\n",
1044 pr_debug("%s initialized\n", driver
.name
);
1048 static void __exit
usb_exit(void)
1050 pr_debug("%s usb_exit()\n", driver
.name
);
1051 usb_deregister(&driver
);
1052 destroy_workqueue(zd_workqueue
);
1055 module_init(usb_init
);
1056 module_exit(usb_exit
);
1058 static int usb_int_regs_length(unsigned int count
)
1060 return sizeof(struct usb_int_regs
) + count
* sizeof(struct reg_data
);
1063 static void prepare_read_regs_int(struct zd_usb
*usb
)
1065 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1067 spin_lock_irq(&intr
->lock
);
1068 intr
->read_regs_enabled
= 1;
1069 INIT_COMPLETION(intr
->read_regs
.completion
);
1070 spin_unlock_irq(&intr
->lock
);
1073 static void disable_read_regs_int(struct zd_usb
*usb
)
1075 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1077 spin_lock_irq(&intr
->lock
);
1078 intr
->read_regs_enabled
= 0;
1079 spin_unlock_irq(&intr
->lock
);
1082 static int get_results(struct zd_usb
*usb
, u16
*values
,
1083 struct usb_req_read_regs
*req
, unsigned int count
)
1087 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1088 struct read_regs_int
*rr
= &intr
->read_regs
;
1089 struct usb_int_regs
*regs
= (struct usb_int_regs
*)rr
->buffer
;
1091 spin_lock_irq(&intr
->lock
);
1094 /* The created block size seems to be larger than expected.
1095 * However results appear to be correct.
1097 if (rr
->length
< usb_int_regs_length(count
)) {
1098 dev_dbg_f(zd_usb_dev(usb
),
1099 "error: actual length %d less than expected %d\n",
1100 rr
->length
, usb_int_regs_length(count
));
1103 if (rr
->length
> sizeof(rr
->buffer
)) {
1104 dev_dbg_f(zd_usb_dev(usb
),
1105 "error: actual length %d exceeds buffer size %zu\n",
1106 rr
->length
, sizeof(rr
->buffer
));
1110 for (i
= 0; i
< count
; i
++) {
1111 struct reg_data
*rd
= ®s
->regs
[i
];
1112 if (rd
->addr
!= req
->addr
[i
]) {
1113 dev_dbg_f(zd_usb_dev(usb
),
1114 "rd[%d] addr %#06hx expected %#06hx\n", i
,
1115 le16_to_cpu(rd
->addr
),
1116 le16_to_cpu(req
->addr
[i
]));
1119 values
[i
] = le16_to_cpu(rd
->value
);
1124 spin_unlock_irq(&intr
->lock
);
1128 int zd_usb_ioread16v(struct zd_usb
*usb
, u16
*values
,
1129 const zd_addr_t
*addresses
, unsigned int count
)
1132 int i
, req_len
, actual_req_len
;
1133 struct usb_device
*udev
;
1134 struct usb_req_read_regs
*req
= NULL
;
1135 unsigned long timeout
;
1138 dev_dbg_f(zd_usb_dev(usb
), "error: count is zero\n");
1141 if (count
> USB_MAX_IOREAD16_COUNT
) {
1142 dev_dbg_f(zd_usb_dev(usb
),
1143 "error: count %u exceeds possible max %u\n",
1144 count
, USB_MAX_IOREAD16_COUNT
);
1148 dev_dbg_f(zd_usb_dev(usb
),
1149 "error: io in atomic context not supported\n");
1150 return -EWOULDBLOCK
;
1152 if (!usb_int_enabled(usb
)) {
1153 dev_dbg_f(zd_usb_dev(usb
),
1154 "error: usb interrupt not enabled\n");
1155 return -EWOULDBLOCK
;
1158 req_len
= sizeof(struct usb_req_read_regs
) + count
* sizeof(__le16
);
1159 req
= kmalloc(req_len
, GFP_NOFS
);
1162 req
->id
= cpu_to_le16(USB_REQ_READ_REGS
);
1163 for (i
= 0; i
< count
; i
++)
1164 req
->addr
[i
] = cpu_to_le16((u16
)addresses
[i
]);
1166 udev
= zd_usb_to_usbdev(usb
);
1167 prepare_read_regs_int(usb
);
1168 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1169 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1171 dev_dbg_f(zd_usb_dev(usb
),
1172 "error in usb_bulk_msg(). Error number %d\n", r
);
1175 if (req_len
!= actual_req_len
) {
1176 dev_dbg_f(zd_usb_dev(usb
), "error in usb_bulk_msg()\n"
1177 " req_len %d != actual_req_len %d\n",
1178 req_len
, actual_req_len
);
1183 timeout
= wait_for_completion_timeout(&usb
->intr
.read_regs
.completion
,
1184 msecs_to_jiffies(1000));
1186 disable_read_regs_int(usb
);
1187 dev_dbg_f(zd_usb_dev(usb
), "read timed out\n");
1192 r
= get_results(usb
, values
, req
, count
);
1198 int zd_usb_iowrite16v(struct zd_usb
*usb
, const struct zd_ioreq16
*ioreqs
,
1202 struct usb_device
*udev
;
1203 struct usb_req_write_regs
*req
= NULL
;
1204 int i
, req_len
, actual_req_len
;
1208 if (count
> USB_MAX_IOWRITE16_COUNT
) {
1209 dev_dbg_f(zd_usb_dev(usb
),
1210 "error: count %u exceeds possible max %u\n",
1211 count
, USB_MAX_IOWRITE16_COUNT
);
1215 dev_dbg_f(zd_usb_dev(usb
),
1216 "error: io in atomic context not supported\n");
1217 return -EWOULDBLOCK
;
1220 req_len
= sizeof(struct usb_req_write_regs
) +
1221 count
* sizeof(struct reg_data
);
1222 req
= kmalloc(req_len
, GFP_NOFS
);
1226 req
->id
= cpu_to_le16(USB_REQ_WRITE_REGS
);
1227 for (i
= 0; i
< count
; i
++) {
1228 struct reg_data
*rw
= &req
->reg_writes
[i
];
1229 rw
->addr
= cpu_to_le16((u16
)ioreqs
[i
].addr
);
1230 rw
->value
= cpu_to_le16(ioreqs
[i
].value
);
1233 udev
= zd_usb_to_usbdev(usb
);
1234 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1235 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1237 dev_dbg_f(zd_usb_dev(usb
),
1238 "error in usb_bulk_msg(). Error number %d\n", r
);
1241 if (req_len
!= actual_req_len
) {
1242 dev_dbg_f(zd_usb_dev(usb
),
1243 "error in usb_bulk_msg()"
1244 " req_len %d != actual_req_len %d\n",
1245 req_len
, actual_req_len
);
1250 /* FALL-THROUGH with r == 0 */
1256 int zd_usb_rfwrite(struct zd_usb
*usb
, u32 value
, u8 bits
)
1259 struct usb_device
*udev
;
1260 struct usb_req_rfwrite
*req
= NULL
;
1261 int i
, req_len
, actual_req_len
;
1262 u16 bit_value_template
;
1265 dev_dbg_f(zd_usb_dev(usb
),
1266 "error: io in atomic context not supported\n");
1267 return -EWOULDBLOCK
;
1269 if (bits
< USB_MIN_RFWRITE_BIT_COUNT
) {
1270 dev_dbg_f(zd_usb_dev(usb
),
1271 "error: bits %d are smaller than"
1272 " USB_MIN_RFWRITE_BIT_COUNT %d\n",
1273 bits
, USB_MIN_RFWRITE_BIT_COUNT
);
1276 if (bits
> USB_MAX_RFWRITE_BIT_COUNT
) {
1277 dev_dbg_f(zd_usb_dev(usb
),
1278 "error: bits %d exceed USB_MAX_RFWRITE_BIT_COUNT %d\n",
1279 bits
, USB_MAX_RFWRITE_BIT_COUNT
);
1283 if (value
& (~0UL << bits
)) {
1284 dev_dbg_f(zd_usb_dev(usb
),
1285 "error: value %#09x has bits >= %d set\n",
1291 dev_dbg_f(zd_usb_dev(usb
), "value %#09x bits %d\n", value
, bits
);
1293 r
= zd_usb_ioread16(usb
, &bit_value_template
, CR203
);
1295 dev_dbg_f(zd_usb_dev(usb
),
1296 "error %d: Couldn't read CR203\n", r
);
1299 bit_value_template
&= ~(RF_IF_LE
|RF_CLK
|RF_DATA
);
1301 req_len
= sizeof(struct usb_req_rfwrite
) + bits
* sizeof(__le16
);
1302 req
= kmalloc(req_len
, GFP_NOFS
);
1306 req
->id
= cpu_to_le16(USB_REQ_WRITE_RF
);
1307 /* 1: 3683a, but not used in ZYDAS driver */
1308 req
->value
= cpu_to_le16(2);
1309 req
->bits
= cpu_to_le16(bits
);
1311 for (i
= 0; i
< bits
; i
++) {
1312 u16 bv
= bit_value_template
;
1313 if (value
& (1 << (bits
-1-i
)))
1315 req
->bit_values
[i
] = cpu_to_le16(bv
);
1318 udev
= zd_usb_to_usbdev(usb
);
1319 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1320 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1322 dev_dbg_f(zd_usb_dev(usb
),
1323 "error in usb_bulk_msg(). Error number %d\n", r
);
1326 if (req_len
!= actual_req_len
) {
1327 dev_dbg_f(zd_usb_dev(usb
), "error in usb_bulk_msg()"
1328 " req_len %d != actual_req_len %d\n",
1329 req_len
, actual_req_len
);
1334 /* FALL-THROUGH with r == 0 */