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
},
51 { USB_DEVICE(0x0ace, 0x1215), .driver_info
= DEVICE_ZD1211B
},
52 { USB_DEVICE(0x157e, 0x300d), .driver_info
= DEVICE_ZD1211B
},
53 { USB_DEVICE(0x079b, 0x0062), .driver_info
= DEVICE_ZD1211B
},
54 { USB_DEVICE(0x1582, 0x6003), .driver_info
= DEVICE_ZD1211B
},
55 /* "Driverless" devices that need ejecting */
56 { USB_DEVICE(0x0ace, 0x2011), .driver_info
= DEVICE_INSTALLER
},
60 MODULE_LICENSE("GPL");
61 MODULE_DESCRIPTION("USB driver for devices with the ZD1211 chip.");
62 MODULE_AUTHOR("Ulrich Kunitz");
63 MODULE_AUTHOR("Daniel Drake");
64 MODULE_VERSION("1.0");
65 MODULE_DEVICE_TABLE(usb
, usb_ids
);
67 #define FW_ZD1211_PREFIX "zd1211/zd1211_"
68 #define FW_ZD1211B_PREFIX "zd1211/zd1211b_"
70 /* register address handling */
73 static int check_addr(struct zd_usb
*usb
, zd_addr_t addr
)
75 u32 base
= ZD_ADDR_BASE(addr
);
76 u32 offset
= ZD_OFFSET(addr
);
78 if ((u32
)addr
& ADDR_ZERO_MASK
)
84 if (offset
> CR_MAX_OFFSET
) {
85 dev_dbg(zd_usb_dev(usb
),
86 "CR offset %#010x larger than"
87 " CR_MAX_OFFSET %#10x\n",
88 offset
, CR_MAX_OFFSET
);
92 dev_dbg(zd_usb_dev(usb
),
93 "CR offset %#010x is not a multiple of 2\n",
99 if (offset
> E2P_MAX_OFFSET
) {
100 dev_dbg(zd_usb_dev(usb
),
101 "E2P offset %#010x larger than"
102 " E2P_MAX_OFFSET %#010x\n",
103 offset
, E2P_MAX_OFFSET
);
104 goto invalid_address
;
108 if (!usb
->fw_base_offset
) {
109 dev_dbg(zd_usb_dev(usb
),
110 "ERROR: fw base offset has not been set\n");
113 if (offset
> FW_MAX_OFFSET
) {
114 dev_dbg(zd_usb_dev(usb
),
115 "FW offset %#10x is larger than"
116 " FW_MAX_OFFSET %#010x\n",
117 offset
, FW_MAX_OFFSET
);
118 goto invalid_address
;
122 dev_dbg(zd_usb_dev(usb
),
123 "address has unsupported base %#010x\n", addr
);
124 goto invalid_address
;
129 dev_dbg(zd_usb_dev(usb
),
130 "ERROR: invalid address: %#010x\n", addr
);
135 static u16
usb_addr(struct zd_usb
*usb
, zd_addr_t addr
)
140 base
= ZD_ADDR_BASE(addr
);
141 offset
= ZD_OFFSET(addr
);
143 ZD_ASSERT(check_addr(usb
, addr
) == 0);
147 offset
+= CR_BASE_OFFSET
;
150 offset
+= E2P_BASE_OFFSET
;
153 offset
+= usb
->fw_base_offset
;
160 /* USB device initialization */
162 static int request_fw_file(
163 const struct firmware
**fw
, const char *name
, struct device
*device
)
167 dev_dbg_f(device
, "fw name %s\n", name
);
169 r
= request_firmware(fw
, name
, device
);
172 "Could not load firmware file %s. Error number %d\n",
177 static inline u16
get_bcdDevice(const struct usb_device
*udev
)
179 return le16_to_cpu(udev
->descriptor
.bcdDevice
);
182 enum upload_code_flags
{
186 /* Ensures that MAX_TRANSFER_SIZE is even. */
187 #define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
189 static int upload_code(struct usb_device
*udev
,
190 const u8
*data
, size_t size
, u16 code_offset
, int flags
)
195 /* USB request blocks need "kmalloced" buffers.
197 p
= kmalloc(MAX_TRANSFER_SIZE
, GFP_KERNEL
);
199 dev_err(&udev
->dev
, "out of memory\n");
206 size_t transfer_size
= size
<= MAX_TRANSFER_SIZE
?
207 size
: MAX_TRANSFER_SIZE
;
209 dev_dbg_f(&udev
->dev
, "transfer size %zu\n", transfer_size
);
211 memcpy(p
, data
, transfer_size
);
212 r
= usb_control_msg(udev
, usb_sndctrlpipe(udev
, 0),
213 USB_REQ_FIRMWARE_DOWNLOAD
,
214 USB_DIR_OUT
| USB_TYPE_VENDOR
,
215 code_offset
, 0, p
, transfer_size
, 1000 /* ms */);
218 "USB control request for firmware upload"
219 " failed. Error number %d\n", r
);
222 transfer_size
= r
& ~1;
224 size
-= transfer_size
;
225 data
+= transfer_size
;
226 code_offset
+= transfer_size
/sizeof(u16
);
229 if (flags
& REBOOT
) {
232 r
= usb_control_msg(udev
, usb_rcvctrlpipe(udev
, 0),
233 USB_REQ_FIRMWARE_CONFIRM
,
234 USB_DIR_IN
| USB_TYPE_VENDOR
,
235 0, 0, &ret
, sizeof(ret
), 5000 /* ms */);
236 if (r
!= sizeof(ret
)) {
238 "control request firmeware confirmation failed."
239 " Return value %d\n", r
);
246 "Internal error while downloading."
247 " Firmware confirm return value %#04x\n",
252 dev_dbg_f(&udev
->dev
, "firmware confirm return value %#04x\n",
262 static u16
get_word(const void *data
, u16 offset
)
264 const __le16
*p
= data
;
265 return le16_to_cpu(p
[offset
]);
268 static char *get_fw_name(char *buffer
, size_t size
, u8 device_type
,
271 scnprintf(buffer
, size
, "%s%s",
272 device_type
== DEVICE_ZD1211B
?
273 FW_ZD1211B_PREFIX
: FW_ZD1211_PREFIX
,
278 static int handle_version_mismatch(struct usb_device
*udev
, u8 device_type
,
279 const struct firmware
*ub_fw
)
281 const struct firmware
*ur_fw
= NULL
;
286 r
= request_fw_file(&ur_fw
,
287 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "ur"),
292 r
= upload_code(udev
, ur_fw
->data
, ur_fw
->size
, FW_START_OFFSET
,
297 offset
= ((EEPROM_REGS_OFFSET
+ EEPROM_REGS_SIZE
) * sizeof(u16
));
298 r
= upload_code(udev
, ub_fw
->data
+ offset
, ub_fw
->size
- offset
,
299 E2P_BASE_OFFSET
+ EEPROM_REGS_SIZE
, REBOOT
);
301 /* At this point, the vendor driver downloads the whole firmware
302 * image, hacks around with version IDs, and uploads it again,
303 * completely overwriting the boot code. We do not do this here as
304 * it is not required on any tested devices, and it is suspected to
307 release_firmware(ur_fw
);
311 static int upload_firmware(struct usb_device
*udev
, u8 device_type
)
316 const struct firmware
*ub_fw
= NULL
;
317 const struct firmware
*uph_fw
= NULL
;
320 bcdDevice
= get_bcdDevice(udev
);
322 r
= request_fw_file(&ub_fw
,
323 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "ub"),
328 fw_bcdDevice
= get_word(ub_fw
->data
, EEPROM_REGS_OFFSET
);
330 if (fw_bcdDevice
!= bcdDevice
) {
332 "firmware version %#06x and device bootcode version "
333 "%#06x differ\n", fw_bcdDevice
, bcdDevice
);
334 if (bcdDevice
<= 0x4313)
335 dev_warn(&udev
->dev
, "device has old bootcode, please "
336 "report success or failure\n");
338 r
= handle_version_mismatch(udev
, device_type
, ub_fw
);
342 dev_dbg_f(&udev
->dev
,
343 "firmware device id %#06x is equal to the "
344 "actual device id\n", fw_bcdDevice
);
348 r
= request_fw_file(&uph_fw
,
349 get_fw_name(fw_name
, sizeof(fw_name
), device_type
, "uphr"),
354 r
= upload_code(udev
, uph_fw
->data
, uph_fw
->size
, FW_START_OFFSET
,
358 "Could not upload firmware code uph. Error number %d\n",
364 release_firmware(ub_fw
);
365 release_firmware(uph_fw
);
369 static void disable_read_regs_int(struct zd_usb
*usb
)
371 struct zd_usb_interrupt
*intr
= &usb
->intr
;
373 spin_lock(&intr
->lock
);
374 intr
->read_regs_enabled
= 0;
375 spin_unlock(&intr
->lock
);
378 #define urb_dev(urb) (&(urb)->dev->dev)
380 static inline void handle_regs_int(struct urb
*urb
)
382 struct zd_usb
*usb
= urb
->context
;
383 struct zd_usb_interrupt
*intr
= &usb
->intr
;
386 ZD_ASSERT(in_interrupt());
387 spin_lock(&intr
->lock
);
389 if (intr
->read_regs_enabled
) {
390 intr
->read_regs
.length
= len
= urb
->actual_length
;
392 if (len
> sizeof(intr
->read_regs
.buffer
))
393 len
= sizeof(intr
->read_regs
.buffer
);
394 memcpy(intr
->read_regs
.buffer
, urb
->transfer_buffer
, len
);
395 intr
->read_regs_enabled
= 0;
396 complete(&intr
->read_regs
.completion
);
400 dev_dbg_f(urb_dev(urb
), "regs interrupt ignored\n");
402 spin_unlock(&intr
->lock
);
405 static inline void handle_retry_failed_int(struct urb
*urb
)
407 dev_dbg_f(urb_dev(urb
), "retry failed interrupt\n");
411 static void int_urb_complete(struct urb
*urb
)
414 struct usb_int_header
*hdr
;
416 switch (urb
->status
) {
430 if (urb
->actual_length
< sizeof(hdr
)) {
431 dev_dbg_f(urb_dev(urb
), "error: urb %p to small\n", urb
);
435 hdr
= urb
->transfer_buffer
;
436 if (hdr
->type
!= USB_INT_TYPE
) {
437 dev_dbg_f(urb_dev(urb
), "error: urb %p wrong type\n", urb
);
442 case USB_INT_ID_REGS
:
443 handle_regs_int(urb
);
445 case USB_INT_ID_RETRY_FAILED
:
446 handle_retry_failed_int(urb
);
449 dev_dbg_f(urb_dev(urb
), "error: urb %p unknown id %x\n", urb
,
450 (unsigned int)hdr
->id
);
455 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
457 dev_dbg_f(urb_dev(urb
), "resubmit urb %p\n", urb
);
462 kfree(urb
->transfer_buffer
);
465 static inline int int_urb_interval(struct usb_device
*udev
)
467 switch (udev
->speed
) {
478 static inline int usb_int_enabled(struct zd_usb
*usb
)
481 struct zd_usb_interrupt
*intr
= &usb
->intr
;
484 spin_lock_irqsave(&intr
->lock
, flags
);
486 spin_unlock_irqrestore(&intr
->lock
, flags
);
490 int zd_usb_enable_int(struct zd_usb
*usb
)
493 struct usb_device
*udev
;
494 struct zd_usb_interrupt
*intr
= &usb
->intr
;
495 void *transfer_buffer
= NULL
;
498 dev_dbg_f(zd_usb_dev(usb
), "\n");
500 urb
= usb_alloc_urb(0, GFP_NOFS
);
506 ZD_ASSERT(!irqs_disabled());
507 spin_lock_irq(&intr
->lock
);
509 spin_unlock_irq(&intr
->lock
);
514 spin_unlock_irq(&intr
->lock
);
516 /* TODO: make it a DMA buffer */
518 transfer_buffer
= kmalloc(USB_MAX_EP_INT_BUFFER
, GFP_NOFS
);
519 if (!transfer_buffer
) {
520 dev_dbg_f(zd_usb_dev(usb
),
521 "couldn't allocate transfer_buffer\n");
522 goto error_set_urb_null
;
525 udev
= zd_usb_to_usbdev(usb
);
526 usb_fill_int_urb(urb
, udev
, usb_rcvintpipe(udev
, EP_INT_IN
),
527 transfer_buffer
, USB_MAX_EP_INT_BUFFER
,
528 int_urb_complete
, usb
,
531 dev_dbg_f(zd_usb_dev(usb
), "submit urb %p\n", intr
->urb
);
532 r
= usb_submit_urb(urb
, GFP_NOFS
);
534 dev_dbg_f(zd_usb_dev(usb
),
535 "Couldn't submit urb. Error number %d\n", r
);
541 kfree(transfer_buffer
);
543 spin_lock_irq(&intr
->lock
);
545 spin_unlock_irq(&intr
->lock
);
552 void zd_usb_disable_int(struct zd_usb
*usb
)
555 struct zd_usb_interrupt
*intr
= &usb
->intr
;
558 spin_lock_irqsave(&intr
->lock
, flags
);
561 spin_unlock_irqrestore(&intr
->lock
, flags
);
565 spin_unlock_irqrestore(&intr
->lock
, flags
);
568 dev_dbg_f(zd_usb_dev(usb
), "urb %p killed\n", urb
);
572 static void handle_rx_packet(struct zd_usb
*usb
, const u8
*buffer
,
576 struct zd_mac
*mac
= zd_usb_to_mac(usb
);
577 const struct rx_length_info
*length_info
;
579 if (length
< sizeof(struct rx_length_info
)) {
580 /* It's not a complete packet anyhow. */
583 length_info
= (struct rx_length_info
*)
584 (buffer
+ length
- sizeof(struct rx_length_info
));
586 /* It might be that three frames are merged into a single URB
587 * transaction. We have to check for the length info tag.
589 * While testing we discovered that length_info might be unaligned,
590 * because if USB transactions are merged, the last packet will not
591 * be padded. Unaligned access might also happen if the length_info
592 * structure is not present.
594 if (get_unaligned(&length_info
->tag
) == cpu_to_le16(RX_LENGTH_INFO_TAG
))
596 unsigned int l
, k
, n
;
597 for (i
= 0, l
= 0;; i
++) {
598 k
= le16_to_cpu(get_unaligned(&length_info
->length
[i
]));
602 zd_mac_rx(mac
, buffer
+l
, k
);
608 zd_mac_rx(mac
, buffer
, length
);
612 static void rx_urb_complete(struct urb
*urb
)
615 struct zd_usb_rx
*rx
;
619 switch (urb
->status
) {
630 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
634 buffer
= urb
->transfer_buffer
;
635 length
= urb
->actual_length
;
639 if (length
%rx
->usb_packet_size
> rx
->usb_packet_size
-4) {
640 /* If there is an old first fragment, we don't care. */
641 dev_dbg_f(urb_dev(urb
), "*** first fragment ***\n");
642 ZD_ASSERT(length
<= ARRAY_SIZE(rx
->fragment
));
643 spin_lock(&rx
->lock
);
644 memcpy(rx
->fragment
, buffer
, length
);
645 rx
->fragment_length
= length
;
646 spin_unlock(&rx
->lock
);
650 spin_lock(&rx
->lock
);
651 if (rx
->fragment_length
> 0) {
652 /* We are on a second fragment, we believe */
653 ZD_ASSERT(length
+ rx
->fragment_length
<=
654 ARRAY_SIZE(rx
->fragment
));
655 dev_dbg_f(urb_dev(urb
), "*** second fragment ***\n");
656 memcpy(rx
->fragment
+rx
->fragment_length
, buffer
, length
);
657 handle_rx_packet(usb
, rx
->fragment
,
658 rx
->fragment_length
+ length
);
659 rx
->fragment_length
= 0;
660 spin_unlock(&rx
->lock
);
662 spin_unlock(&rx
->lock
);
663 handle_rx_packet(usb
, buffer
, length
);
667 usb_submit_urb(urb
, GFP_ATOMIC
);
670 static struct urb
*alloc_urb(struct zd_usb
*usb
)
672 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
676 urb
= usb_alloc_urb(0, GFP_NOFS
);
679 buffer
= usb_buffer_alloc(udev
, USB_MAX_RX_SIZE
, GFP_NOFS
,
686 usb_fill_bulk_urb(urb
, udev
, usb_rcvbulkpipe(udev
, EP_DATA_IN
),
687 buffer
, USB_MAX_RX_SIZE
,
688 rx_urb_complete
, usb
);
689 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
694 static void free_urb(struct urb
*urb
)
698 usb_buffer_free(urb
->dev
, urb
->transfer_buffer_length
,
699 urb
->transfer_buffer
, urb
->transfer_dma
);
703 int zd_usb_enable_rx(struct zd_usb
*usb
)
706 struct zd_usb_rx
*rx
= &usb
->rx
;
709 dev_dbg_f(zd_usb_dev(usb
), "\n");
712 urbs
= kcalloc(URBS_COUNT
, sizeof(struct urb
*), GFP_NOFS
);
715 for (i
= 0; i
< URBS_COUNT
; i
++) {
716 urbs
[i
] = alloc_urb(usb
);
721 ZD_ASSERT(!irqs_disabled());
722 spin_lock_irq(&rx
->lock
);
724 spin_unlock_irq(&rx
->lock
);
729 rx
->urbs_count
= URBS_COUNT
;
730 spin_unlock_irq(&rx
->lock
);
732 for (i
= 0; i
< URBS_COUNT
; i
++) {
733 r
= usb_submit_urb(urbs
[i
], GFP_NOFS
);
740 for (i
= 0; i
< URBS_COUNT
; i
++) {
741 usb_kill_urb(urbs
[i
]);
743 spin_lock_irq(&rx
->lock
);
746 spin_unlock_irq(&rx
->lock
);
749 for (i
= 0; i
< URBS_COUNT
; i
++)
755 void zd_usb_disable_rx(struct zd_usb
*usb
)
761 struct zd_usb_rx
*rx
= &usb
->rx
;
763 spin_lock_irqsave(&rx
->lock
, flags
);
765 count
= rx
->urbs_count
;
766 spin_unlock_irqrestore(&rx
->lock
, flags
);
770 for (i
= 0; i
< count
; i
++) {
771 usb_kill_urb(urbs
[i
]);
776 spin_lock_irqsave(&rx
->lock
, flags
);
779 spin_unlock_irqrestore(&rx
->lock
, flags
);
782 static void tx_urb_complete(struct urb
*urb
)
786 switch (urb
->status
) {
795 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
798 dev_dbg_f(urb_dev(urb
), "urb %p error %d\n", urb
, urb
->status
);
802 usb_buffer_free(urb
->dev
, urb
->transfer_buffer_length
,
803 urb
->transfer_buffer
, urb
->transfer_dma
);
807 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
809 dev_dbg_f(urb_dev(urb
), "error resubmit urb %p %d\n", urb
, r
);
814 /* Puts the frame on the USB endpoint. It doesn't wait for
815 * completion. The frame must contain the control set.
817 int zd_usb_tx(struct zd_usb
*usb
, const u8
*frame
, unsigned int length
)
820 struct usb_device
*udev
= zd_usb_to_usbdev(usb
);
824 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
830 buffer
= usb_buffer_alloc(zd_usb_to_usbdev(usb
), length
, GFP_ATOMIC
,
836 memcpy(buffer
, frame
, length
);
838 usb_fill_bulk_urb(urb
, udev
, usb_sndbulkpipe(udev
, EP_DATA_OUT
),
839 buffer
, length
, tx_urb_complete
, NULL
);
840 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
842 r
= usb_submit_urb(urb
, GFP_ATOMIC
);
847 usb_buffer_free(zd_usb_to_usbdev(usb
), length
, buffer
,
855 static inline void init_usb_interrupt(struct zd_usb
*usb
)
857 struct zd_usb_interrupt
*intr
= &usb
->intr
;
859 spin_lock_init(&intr
->lock
);
860 intr
->interval
= int_urb_interval(zd_usb_to_usbdev(usb
));
861 init_completion(&intr
->read_regs
.completion
);
862 intr
->read_regs
.cr_int_addr
= cpu_to_le16(usb_addr(usb
, CR_INTERRUPT
));
865 static inline void init_usb_rx(struct zd_usb
*usb
)
867 struct zd_usb_rx
*rx
= &usb
->rx
;
868 spin_lock_init(&rx
->lock
);
869 if (interface_to_usbdev(usb
->intf
)->speed
== USB_SPEED_HIGH
) {
870 rx
->usb_packet_size
= 512;
872 rx
->usb_packet_size
= 64;
874 ZD_ASSERT(rx
->fragment_length
== 0);
877 static inline void init_usb_tx(struct zd_usb
*usb
)
879 /* FIXME: at this point we will allocate a fixed number of urb's for
880 * use in a cyclic scheme */
883 void zd_usb_init(struct zd_usb
*usb
, struct net_device
*netdev
,
884 struct usb_interface
*intf
)
886 memset(usb
, 0, sizeof(*usb
));
887 usb
->intf
= usb_get_intf(intf
);
888 usb_set_intfdata(usb
->intf
, netdev
);
889 init_usb_interrupt(usb
);
894 int zd_usb_init_hw(struct zd_usb
*usb
)
897 struct zd_chip
*chip
= zd_usb_to_chip(usb
);
899 ZD_ASSERT(mutex_is_locked(&chip
->mutex
));
900 r
= zd_ioread16_locked(chip
, &usb
->fw_base_offset
,
901 USB_REG((u16
)FW_BASE_ADDR_OFFSET
));
904 dev_dbg_f(zd_usb_dev(usb
), "fw_base_offset: %#06hx\n",
905 usb
->fw_base_offset
);
910 void zd_usb_clear(struct zd_usb
*usb
)
912 usb_set_intfdata(usb
->intf
, NULL
);
913 usb_put_intf(usb
->intf
);
914 ZD_MEMCLEAR(usb
, sizeof(*usb
));
915 /* FIXME: usb_interrupt, usb_tx, usb_rx? */
918 static const char *speed(enum usb_device_speed speed
)
928 return "unknown speed";
932 static int scnprint_id(struct usb_device
*udev
, char *buffer
, size_t size
)
934 return scnprintf(buffer
, size
, "%04hx:%04hx v%04hx %s",
935 le16_to_cpu(udev
->descriptor
.idVendor
),
936 le16_to_cpu(udev
->descriptor
.idProduct
),
941 int zd_usb_scnprint_id(struct zd_usb
*usb
, char *buffer
, size_t size
)
943 struct usb_device
*udev
= interface_to_usbdev(usb
->intf
);
944 return scnprint_id(udev
, buffer
, size
);
948 static void print_id(struct usb_device
*udev
)
952 scnprint_id(udev
, buffer
, sizeof(buffer
));
953 buffer
[sizeof(buffer
)-1] = 0;
954 dev_dbg_f(&udev
->dev
, "%s\n", buffer
);
957 #define print_id(udev) do { } while (0)
960 static int eject_installer(struct usb_interface
*intf
)
962 struct usb_device
*udev
= interface_to_usbdev(intf
);
963 struct usb_host_interface
*iface_desc
= &intf
->altsetting
[0];
964 struct usb_endpoint_descriptor
*endpoint
;
969 /* Find bulk out endpoint */
970 endpoint
= &iface_desc
->endpoint
[1].desc
;
971 if ((endpoint
->bEndpointAddress
& USB_TYPE_MASK
) == USB_DIR_OUT
&&
972 (endpoint
->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) ==
973 USB_ENDPOINT_XFER_BULK
) {
974 bulk_out_ep
= endpoint
->bEndpointAddress
;
977 "zd1211rw: Could not find bulk out endpoint\n");
981 cmd
= kzalloc(31, GFP_KERNEL
);
985 /* USB bulk command block */
986 cmd
[0] = 0x55; /* bulk command signature */
987 cmd
[1] = 0x53; /* bulk command signature */
988 cmd
[2] = 0x42; /* bulk command signature */
989 cmd
[3] = 0x43; /* bulk command signature */
990 cmd
[14] = 6; /* command length */
992 cmd
[15] = 0x1b; /* SCSI command: START STOP UNIT */
993 cmd
[19] = 0x2; /* eject disc */
995 dev_info(&udev
->dev
, "Ejecting virtual installer media...\n");
996 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, bulk_out_ep
),
997 cmd
, 31, NULL
, 2000);
1002 /* At this point, the device disconnects and reconnects with the real
1005 usb_set_intfdata(intf
, NULL
);
1009 static int probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
1012 struct usb_device
*udev
= interface_to_usbdev(intf
);
1013 struct net_device
*netdev
= NULL
;
1017 if (id
->driver_info
& DEVICE_INSTALLER
)
1018 return eject_installer(intf
);
1020 switch (udev
->speed
) {
1022 case USB_SPEED_FULL
:
1023 case USB_SPEED_HIGH
:
1026 dev_dbg_f(&intf
->dev
, "Unknown USB speed\n");
1031 netdev
= zd_netdev_alloc(intf
);
1032 if (netdev
== NULL
) {
1037 r
= upload_firmware(udev
, id
->driver_info
);
1040 "couldn't load firmware. Error number %d\n", r
);
1044 r
= usb_reset_configuration(udev
);
1046 dev_dbg_f(&intf
->dev
,
1047 "couldn't reset configuration. Error number %d\n", r
);
1051 /* At this point the interrupt endpoint is not generally enabled. We
1052 * save the USB bandwidth until the network device is opened. But
1053 * notify that the initialization of the MAC will require the
1054 * interrupts to be temporary enabled.
1056 r
= zd_mac_init_hw(zd_netdev_mac(netdev
), id
->driver_info
);
1058 dev_dbg_f(&intf
->dev
,
1059 "couldn't initialize mac. Error number %d\n", r
);
1063 r
= register_netdev(netdev
);
1065 dev_dbg_f(&intf
->dev
,
1066 "couldn't register netdev. Error number %d\n", r
);
1070 dev_dbg_f(&intf
->dev
, "successful\n");
1071 dev_info(&intf
->dev
,"%s\n", netdev
->name
);
1074 usb_reset_device(interface_to_usbdev(intf
));
1075 zd_netdev_free(netdev
);
1079 static void disconnect(struct usb_interface
*intf
)
1081 struct net_device
*netdev
= zd_intf_to_netdev(intf
);
1082 struct zd_mac
*mac
= zd_netdev_mac(netdev
);
1083 struct zd_usb
*usb
= &mac
->chip
.usb
;
1085 /* Either something really bad happened, or we're just dealing with
1086 * a DEVICE_INSTALLER. */
1090 dev_dbg_f(zd_usb_dev(usb
), "\n");
1092 zd_netdev_disconnect(netdev
);
1094 /* Just in case something has gone wrong! */
1095 zd_usb_disable_rx(usb
);
1096 zd_usb_disable_int(usb
);
1098 /* If the disconnect has been caused by a removal of the
1099 * driver module, the reset allows reloading of the driver. If the
1100 * reset will not be executed here, the upload of the firmware in the
1101 * probe function caused by the reloading of the driver will fail.
1103 usb_reset_device(interface_to_usbdev(intf
));
1105 zd_netdev_free(netdev
);
1106 dev_dbg(&intf
->dev
, "disconnected\n");
1109 static struct usb_driver driver
= {
1111 .id_table
= usb_ids
,
1113 .disconnect
= disconnect
,
1116 struct workqueue_struct
*zd_workqueue
;
1118 static int __init
usb_init(void)
1122 pr_debug("usb_init()\n");
1124 zd_workqueue
= create_singlethread_workqueue(driver
.name
);
1125 if (zd_workqueue
== NULL
) {
1126 printk(KERN_ERR
"%s: couldn't create workqueue\n", driver
.name
);
1130 r
= usb_register(&driver
);
1132 printk(KERN_ERR
"usb_register() failed. Error number %d\n", r
);
1136 pr_debug("zd1211rw initialized\n");
1140 static void __exit
usb_exit(void)
1142 pr_debug("usb_exit()\n");
1143 usb_deregister(&driver
);
1144 destroy_workqueue(zd_workqueue
);
1147 module_init(usb_init
);
1148 module_exit(usb_exit
);
1150 static int usb_int_regs_length(unsigned int count
)
1152 return sizeof(struct usb_int_regs
) + count
* sizeof(struct reg_data
);
1155 static void prepare_read_regs_int(struct zd_usb
*usb
)
1157 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1159 spin_lock(&intr
->lock
);
1160 intr
->read_regs_enabled
= 1;
1161 INIT_COMPLETION(intr
->read_regs
.completion
);
1162 spin_unlock(&intr
->lock
);
1165 static int get_results(struct zd_usb
*usb
, u16
*values
,
1166 struct usb_req_read_regs
*req
, unsigned int count
)
1170 struct zd_usb_interrupt
*intr
= &usb
->intr
;
1171 struct read_regs_int
*rr
= &intr
->read_regs
;
1172 struct usb_int_regs
*regs
= (struct usb_int_regs
*)rr
->buffer
;
1174 spin_lock(&intr
->lock
);
1177 /* The created block size seems to be larger than expected.
1178 * However results appear to be correct.
1180 if (rr
->length
< usb_int_regs_length(count
)) {
1181 dev_dbg_f(zd_usb_dev(usb
),
1182 "error: actual length %d less than expected %d\n",
1183 rr
->length
, usb_int_regs_length(count
));
1186 if (rr
->length
> sizeof(rr
->buffer
)) {
1187 dev_dbg_f(zd_usb_dev(usb
),
1188 "error: actual length %d exceeds buffer size %zu\n",
1189 rr
->length
, sizeof(rr
->buffer
));
1193 for (i
= 0; i
< count
; i
++) {
1194 struct reg_data
*rd
= ®s
->regs
[i
];
1195 if (rd
->addr
!= req
->addr
[i
]) {
1196 dev_dbg_f(zd_usb_dev(usb
),
1197 "rd[%d] addr %#06hx expected %#06hx\n", i
,
1198 le16_to_cpu(rd
->addr
),
1199 le16_to_cpu(req
->addr
[i
]));
1202 values
[i
] = le16_to_cpu(rd
->value
);
1207 spin_unlock(&intr
->lock
);
1211 int zd_usb_ioread16v(struct zd_usb
*usb
, u16
*values
,
1212 const zd_addr_t
*addresses
, unsigned int count
)
1215 int i
, req_len
, actual_req_len
;
1216 struct usb_device
*udev
;
1217 struct usb_req_read_regs
*req
= NULL
;
1218 unsigned long timeout
;
1221 dev_dbg_f(zd_usb_dev(usb
), "error: count is zero\n");
1224 if (count
> USB_MAX_IOREAD16_COUNT
) {
1225 dev_dbg_f(zd_usb_dev(usb
),
1226 "error: count %u exceeds possible max %u\n",
1227 count
, USB_MAX_IOREAD16_COUNT
);
1231 dev_dbg_f(zd_usb_dev(usb
),
1232 "error: io in atomic context not supported\n");
1233 return -EWOULDBLOCK
;
1235 if (!usb_int_enabled(usb
)) {
1236 dev_dbg_f(zd_usb_dev(usb
),
1237 "error: usb interrupt not enabled\n");
1238 return -EWOULDBLOCK
;
1241 req_len
= sizeof(struct usb_req_read_regs
) + count
* sizeof(__le16
);
1242 req
= kmalloc(req_len
, GFP_NOFS
);
1245 req
->id
= cpu_to_le16(USB_REQ_READ_REGS
);
1246 for (i
= 0; i
< count
; i
++)
1247 req
->addr
[i
] = cpu_to_le16(usb_addr(usb
, addresses
[i
]));
1249 udev
= zd_usb_to_usbdev(usb
);
1250 prepare_read_regs_int(usb
);
1251 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1252 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1254 dev_dbg_f(zd_usb_dev(usb
),
1255 "error in usb_bulk_msg(). Error number %d\n", r
);
1258 if (req_len
!= actual_req_len
) {
1259 dev_dbg_f(zd_usb_dev(usb
), "error in usb_bulk_msg()\n"
1260 " req_len %d != actual_req_len %d\n",
1261 req_len
, actual_req_len
);
1266 timeout
= wait_for_completion_timeout(&usb
->intr
.read_regs
.completion
,
1267 msecs_to_jiffies(1000));
1269 disable_read_regs_int(usb
);
1270 dev_dbg_f(zd_usb_dev(usb
), "read timed out\n");
1275 r
= get_results(usb
, values
, req
, count
);
1281 int zd_usb_iowrite16v(struct zd_usb
*usb
, const struct zd_ioreq16
*ioreqs
,
1285 struct usb_device
*udev
;
1286 struct usb_req_write_regs
*req
= NULL
;
1287 int i
, req_len
, actual_req_len
;
1291 if (count
> USB_MAX_IOWRITE16_COUNT
) {
1292 dev_dbg_f(zd_usb_dev(usb
),
1293 "error: count %u exceeds possible max %u\n",
1294 count
, USB_MAX_IOWRITE16_COUNT
);
1298 dev_dbg_f(zd_usb_dev(usb
),
1299 "error: io in atomic context not supported\n");
1300 return -EWOULDBLOCK
;
1303 req_len
= sizeof(struct usb_req_write_regs
) +
1304 count
* sizeof(struct reg_data
);
1305 req
= kmalloc(req_len
, GFP_NOFS
);
1309 req
->id
= cpu_to_le16(USB_REQ_WRITE_REGS
);
1310 for (i
= 0; i
< count
; i
++) {
1311 struct reg_data
*rw
= &req
->reg_writes
[i
];
1312 rw
->addr
= cpu_to_le16(usb_addr(usb
, ioreqs
[i
].addr
));
1313 rw
->value
= cpu_to_le16(ioreqs
[i
].value
);
1316 udev
= zd_usb_to_usbdev(usb
);
1317 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1318 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1320 dev_dbg_f(zd_usb_dev(usb
),
1321 "error in usb_bulk_msg(). Error number %d\n", r
);
1324 if (req_len
!= actual_req_len
) {
1325 dev_dbg_f(zd_usb_dev(usb
),
1326 "error in usb_bulk_msg()"
1327 " req_len %d != actual_req_len %d\n",
1328 req_len
, actual_req_len
);
1333 /* FALL-THROUGH with r == 0 */
1339 int zd_usb_rfwrite(struct zd_usb
*usb
, u32 value
, u8 bits
)
1342 struct usb_device
*udev
;
1343 struct usb_req_rfwrite
*req
= NULL
;
1344 int i
, req_len
, actual_req_len
;
1345 u16 bit_value_template
;
1348 dev_dbg_f(zd_usb_dev(usb
),
1349 "error: io in atomic context not supported\n");
1350 return -EWOULDBLOCK
;
1352 if (bits
< USB_MIN_RFWRITE_BIT_COUNT
) {
1353 dev_dbg_f(zd_usb_dev(usb
),
1354 "error: bits %d are smaller than"
1355 " USB_MIN_RFWRITE_BIT_COUNT %d\n",
1356 bits
, USB_MIN_RFWRITE_BIT_COUNT
);
1359 if (bits
> USB_MAX_RFWRITE_BIT_COUNT
) {
1360 dev_dbg_f(zd_usb_dev(usb
),
1361 "error: bits %d exceed USB_MAX_RFWRITE_BIT_COUNT %d\n",
1362 bits
, USB_MAX_RFWRITE_BIT_COUNT
);
1366 if (value
& (~0UL << bits
)) {
1367 dev_dbg_f(zd_usb_dev(usb
),
1368 "error: value %#09x has bits >= %d set\n",
1374 dev_dbg_f(zd_usb_dev(usb
), "value %#09x bits %d\n", value
, bits
);
1376 r
= zd_usb_ioread16(usb
, &bit_value_template
, CR203
);
1378 dev_dbg_f(zd_usb_dev(usb
),
1379 "error %d: Couldn't read CR203\n", r
);
1382 bit_value_template
&= ~(RF_IF_LE
|RF_CLK
|RF_DATA
);
1384 req_len
= sizeof(struct usb_req_rfwrite
) + bits
* sizeof(__le16
);
1385 req
= kmalloc(req_len
, GFP_NOFS
);
1389 req
->id
= cpu_to_le16(USB_REQ_WRITE_RF
);
1390 /* 1: 3683a, but not used in ZYDAS driver */
1391 req
->value
= cpu_to_le16(2);
1392 req
->bits
= cpu_to_le16(bits
);
1394 for (i
= 0; i
< bits
; i
++) {
1395 u16 bv
= bit_value_template
;
1396 if (value
& (1 << (bits
-1-i
)))
1398 req
->bit_values
[i
] = cpu_to_le16(bv
);
1401 udev
= zd_usb_to_usbdev(usb
);
1402 r
= usb_bulk_msg(udev
, usb_sndbulkpipe(udev
, EP_REGS_OUT
),
1403 req
, req_len
, &actual_req_len
, 1000 /* ms */);
1405 dev_dbg_f(zd_usb_dev(usb
),
1406 "error in usb_bulk_msg(). Error number %d\n", r
);
1409 if (req_len
!= actual_req_len
) {
1410 dev_dbg_f(zd_usb_dev(usb
), "error in usb_bulk_msg()"
1411 " req_len %d != actual_req_len %d\n",
1412 req_len
, actual_req_len
);
1417 /* FALL-THROUGH with r == 0 */