2 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
3 * The ACX100 Open Source Project <acx100-devel@lists.sourceforge.net>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 * USB support for TI ACX100/TNETW1450 based devices. Many parts are taken from
22 * Martin Wawro <martin.wawro AT uni-dortmund.de>
23 * Andreas Mohr <andi AT lisas.de>
26 * callback functions called by USB core are running in interrupt context
27 * and thus have names with _i_.
29 #define ACX_MAC80211_USB 1
31 #include <linux/version.h>
32 #include <linux/types.h>
33 #include <linux/module.h>
34 #include <linux/moduleparam.h>
35 #include <linux/kernel.h>
36 #include <linux/usb.h>
37 #include <linux/netdevice.h>
38 #include <linux/rtnetlink.h>
39 #include <linux/etherdevice.h>
40 #include <linux/wireless.h>
41 #include <net/iw_handler.h>
42 #include <linux/vmalloc.h>
43 #include <linux/ethtool.h>
44 #include <linux/workqueue.h>
49 /***********************************************************************
51 /* number of endpoints of an interface */
52 #define NUM_EP(intf) (intf)->altsetting[0].desc.bNumEndpoints
53 #define EP(intf, nr) (intf)->altsetting[0].endpoint[(nr)].desc
54 #define GET_DEV(udev) usb_get_dev((udev))
55 #define PUT_DEV(udev) usb_put_dev((udev))
57 /* removed in 2.6.14. We will use fake value for now
58 * TODO: maybe we should just remove all lines that include
59 * URB_ASYNC_UNLINK somewhere?
61 #define URB_ASYNC_UNLINK 0
63 /***********************************************************************
65 /* ACX100 (TNETW1100) USB device: D-Link DWL-120+ */
66 #define ACX100_VENDOR_ID 0x2001
67 #define ACX100_PRODUCT_ID_UNBOOTED 0x3B01
68 #define ACX100_PRODUCT_ID_BOOTED 0x3B00
70 /* TNETW1450 USB devices */
71 #define VENDOR_ID_DLINK 0x07b8 /* D-Link Corp. */
72 #define PRODUCT_ID_WUG2400 0xb21a /* AboCom WUG2400 or SafeCom SWLUT-54125 */
73 #define VENDOR_ID_AVM_GMBH 0x057c
74 #define PRODUCT_ID_AVM_WLAN_USB 0x5601
75 #define PRODUCT_ID_AVM_WLAN_USB_si 0x6201 /* "self install" named Version:
76 * driver kills kernel on inbound scans from fritz box ?? */
77 #define VENDOR_ID_ZCOM 0x0cde
78 #define PRODUCT_ID_ZCOM_XG750 0x0017 /* not tested yet */
79 #define VENDOR_ID_TI 0x0451
80 #define PRODUCT_ID_TI_UNKNOWN 0x60c5 /* not tested yet */
82 #define ACX_USB_CTRL_TIMEOUT 5500 /* steps in ms */
84 /* Buffer size for fw upload, same for both ACX100 USB and TNETW1450 */
85 #define USB_RWMEM_MAXLEN 2048
87 /* The number of bulk URBs to use */
88 #define ACX_TX_URB_CNT 8
89 #define ACX_RX_URB_CNT 2
91 /* Should be sent to the bulkout endpoint */
92 #define ACX_USB_REQ_UPLOAD_FW 0x10
93 #define ACX_USB_REQ_ACK_CS 0x11
94 #define ACX_USB_REQ_CMD 0x12
96 /***********************************************************************
99 static int acxusb_e_probe(struct usb_interface
*, const struct usb_device_id
*);
100 static void acxusb_e_disconnect(struct usb_interface
*);
101 static void acxusb_i_complete_tx(struct urb
*);
102 static void acxusb_i_complete_rx(struct urb
*);
103 static int acxusb_e_open(struct ieee80211_hw
*);
104 static void acxusb_e_close(struct ieee80211_hw
*);
105 //static void acxusb_i_set_rx_mode(struct net_device *);
106 static int acxusb_boot(struct usb_device
*, int is_tnetw1450
, int *radio_type
);
108 static void acxusb_l_poll_rx(acx_device_t
* adev
, usb_rx_t
* rx
);
110 /*static void acxusb_i_tx_timeout(struct net_device *);*/
112 /* static void dump_device(struct usb_device *); */
113 /* static void dump_device_descriptor(struct usb_device_descriptor *); */
114 /* static void dump_config_descriptor(struct usb_config_descriptor *); */
116 /***********************************************************************
119 #define TXBUFSIZE sizeof(usb_txbuffer_t)
121 * Now, this is just plain lying, but the device insists in giving us
122 * huge packets. We supply extra space after rxbuffer. Need to understand
125 #define RXBUFSIZE (sizeof(rxbuffer_t) + \
126 (sizeof(usb_rx_t) - sizeof(struct usb_rx_plain)))
128 static const struct usb_device_id acxusb_ids
[] = {
129 {USB_DEVICE(ACX100_VENDOR_ID
, ACX100_PRODUCT_ID_BOOTED
)},
130 {USB_DEVICE(ACX100_VENDOR_ID
, ACX100_PRODUCT_ID_UNBOOTED
)},
131 {USB_DEVICE(VENDOR_ID_DLINK
, PRODUCT_ID_WUG2400
)},
132 {USB_DEVICE(VENDOR_ID_AVM_GMBH
, PRODUCT_ID_AVM_WLAN_USB
)},
133 {USB_DEVICE(VENDOR_ID_AVM_GMBH
, PRODUCT_ID_AVM_WLAN_USB_si
)},
134 {USB_DEVICE(VENDOR_ID_ZCOM
, PRODUCT_ID_ZCOM_XG750
)},
135 {USB_DEVICE(VENDOR_ID_TI
, PRODUCT_ID_TI_UNKNOWN
)},
139 MODULE_DEVICE_TABLE(usb
, acxusb_ids
);
141 /* USB driver data structure as required by the kernel's USB core */
142 static struct usb_driver
145 .probe
= acxusb_e_probe
,
146 .disconnect
= acxusb_e_disconnect
,
147 .id_table
= acxusb_ids
150 /***********************************************************************
154 ** When the function is usb_kill_urb, the urb lifecycle is stopped. This
155 ** function is usually used when the device is disconnected from the system,
156 ** in the disconnect callback. For some drivers, the usb_unlink_urb function
157 ** should be used to tell the USB core to stop an urb. This function does not
158 ** wait for the urb to be fully stopped before returning to the caller.
159 ** This is useful for stoppingthe urb while in an interrupt handler or when
160 ** a spinlock is held, as waiting for a urb to fully stop requires the ability
161 ** for the USB core to put the calling process to sleep. This function requires
162 ** that the URB_ASYNC_UNLINK flag value be set in the urb that is being asked
163 ** to be stopped in order to work properly.
165 ** (URB_ASYNC_UNLINK is obsolete, usb_unlink_urb will always be
166 ** asynchronous while usb_kill_urb is synchronous and should be called
167 ** directly (drivers/usb/core/urb.c))
169 ** In light of this, timeout is just for paranoid reasons...
171 ** Actually, it's useful for debugging. If we reach timeout, we're doing
172 ** something wrong with the urbs.
174 static void acxusb_unlink_urb(struct urb
*urb
)
179 if (urb
->status
== -EINPROGRESS
) {
183 while (--timeout
&& urb
->status
== -EINPROGRESS
) {
187 printk(KERN_ERR
"acx_usb: urb unlink timeout!\n");
193 /***********************************************************************
194 ** EEPROM and PHY read/write helpers
196 /***********************************************************************
197 ** acxusb_s_read_phy_reg
199 int acxusb_s_read_phy_reg(acx_device_t
* adev
, u32 reg
, u8
* charbuf
)
201 /* mem_read_write_t mem; */
205 printk("%s doesn't seem to work yet, disabled.\n", __func__
);
208 mem.addr = cpu_to_le16(reg);
209 mem.type = cpu_to_le16(0x82);
210 mem.len = cpu_to_le32(4);
211 acx_s_issue_cmd(adev, ACX1xx_CMD_MEM_READ, &mem, sizeof(mem));
213 log(L_DEBUG, "acx: read radio PHY[0x%04X]=0x%02X\n", reg, *charbuf);
221 /***********************************************************************
223 int acxusb_s_write_phy_reg(acx_device_t
* adev
, u32 reg
, u8 value
)
225 mem_read_write_t mem
;
229 mem
.addr
= cpu_to_le16(reg
);
230 mem
.type
= cpu_to_le16(0x82);
231 mem
.len
= cpu_to_le32(4);
233 acx_s_issue_cmd(adev
, ACX1xx_CMD_MEM_WRITE
, &mem
, sizeof(mem
));
234 log(L_DEBUG
, "acx: write radio PHY[0x%04X]=0x%02X\n", reg
, value
);
241 /***********************************************************************
242 ** acxusb_s_issue_cmd_timeo
243 ** Excecutes a command in the command mailbox
245 ** buffer = a pointer to the data.
246 ** The data must not include 4 byte command header
249 /* TODO: ideally we shall always know how much we need
250 ** and this shall be 0 */
251 #define BOGUS_SAFETY_PADDING 0x40
254 #define FUNC "issue_cmd"
258 acxusb_s_issue_cmd_timeo(acx_device_t
* adev
,
260 void *buffer
, unsigned buflen
, unsigned timeout
)
264 acxusb_s_issue_cmd_timeo_debug(acx_device_t
* adev
,
268 unsigned timeout
, const char *cmdstr
)
271 /* USB ignores timeout param */
273 struct usb_device
*usbdev
;
280 int acklen
, blocklen
, inpipe
, outpipe
;
286 devname
= wiphy_name(adev
->ieee
->wiphy
);
287 /* no "wlan%%d: ..." please */
288 if (!devname
|| !devname
[0] || devname
[4] == '%')
291 log(L_CTL
, "acx: " FUNC
"(cmd:%s,buflen:%u,type:0x%04X)\n",
293 buffer
? le16_to_cpu(((acx_ie_generic_t
*) buffer
)->type
) : -1);
295 loc
= kmalloc(buflen
+ 4 + BOGUS_SAFETY_PADDING
, GFP_KERNEL
);
297 printk("acx: %s: " FUNC
"(): no memory for data buffer\n", devname
);
301 /* get context from acx_device */
302 usbdev
= adev
->usbdev
;
304 /* check which kind of command was issued */
305 loc
->cmd
= cpu_to_le16(cmd
);
308 /* NB: buflen == frmlen + 4
310 ** Interrogate: write 8 bytes: (cmd,status,rid,frmlen), then
311 ** read (cmd,status,rid,frmlen,data[frmlen]) back
313 ** Configure: write (cmd,status,rid,frmlen,data[frmlen])
315 ** Possibly bogus special handling of ACX1xx_IE_SCAN_STATUS removed
318 /* now write the parameters of the command if needed */
319 acklen
= buflen
+ 4 + BOGUS_SAFETY_PADDING
;
321 if (buffer
&& buflen
) {
322 /* if it's an INTERROGATE command, just pass the length
323 * of parameters to read, as data */
324 if (cmd
== ACX1xx_CMD_INTERROGATE
) {
328 memcpy(loc
->data
, buffer
, blocklen
);
330 blocklen
+= 4; /* account for cmd,status */
332 /* obtain the I/O pipes */
333 outpipe
= usb_sndctrlpipe(usbdev
, 0);
334 inpipe
= usb_rcvctrlpipe(usbdev
, 0);
335 log(L_CTL
, "acx: trl inpipe=0x%X outpipe=0x%X\n", inpipe
, outpipe
);
336 log(L_CTL
, "acx: sending USB control msg (out) (blocklen=%d)\n", blocklen
);
337 if (acx_debug
& L_DATA
)
338 acx_dump_bytes(loc
, blocklen
);
340 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_CMD
, /* request */
341 USB_TYPE_VENDOR
| USB_DIR_OUT
, /* requesttype */
346 ACX_USB_CTRL_TIMEOUT
/* timeout in ms */
349 if (result
== -ENODEV
) {
350 log(L_CTL
, "acx: no device present (unplug?)\n");
354 log(L_CTL
, "acx: wrote %d bytes\n", result
);
359 /* check for device acknowledge */
360 log(L_CTL
, "acx: sending USB control msg (in) (acklen=%d)\n", acklen
);
361 loc
->status
= 0; /* delete old status flag -> set to IDLE */
362 /* shall we zero out the rest? */
363 result
= usb_control_msg(usbdev
, inpipe
, ACX_USB_REQ_CMD
, /* request */
364 USB_TYPE_VENDOR
| USB_DIR_IN
, /* requesttype */
369 ACX_USB_CTRL_TIMEOUT
/* timeout in ms */
372 printk("acx: %s: " FUNC
"(): USB read error %d\n", devname
, result
);
375 if (acx_debug
& L_CTL
) {
376 printk("acx: read %d bytes: ", result
);
377 acx_dump_bytes(loc
, result
);
381 check for result==buflen+4? Was seen:
383 interrogate(type:ACX100_IE_DOT11_ED_THRESHOLD,len:4)
384 issue_cmd(cmd:ACX1xx_CMD_INTERROGATE,buflen:8,type:4111)
385 ctrl inpipe=0x80000280 outpipe=0x80000200
386 sending USB control msg (out) (blocklen=8)
387 01 00 00 00 0F 10 04 00
389 sending USB control msg (in) (acklen=12) sizeof(loc->data
390 read 4 bytes <==== MUST BE 12!!
393 cmd_status
= le16_to_cpu(loc
->status
);
394 if (cmd_status
!= 1) {
395 printk("acx: %s: " FUNC
"(): cmd_status is not SUCCESS: %d (%s)\n",
396 devname
, cmd_status
, acx_cmd_status_str(cmd_status
));
397 /* TODO: goto bad; ? */
399 if ((cmd
== ACX1xx_CMD_INTERROGATE
) && buffer
&& buflen
) {
400 memcpy(buffer
, loc
->data
, buflen
);
401 log(L_CTL
, "acx: response frame: cmd=0x%04X status=%d\n",
402 le16_to_cpu(loc
->cmd
), cmd_status
);
409 /* Give enough info so that callers can avoid
410 ** printing their own diagnostic messages */
412 printk("acx: %s: " FUNC
"(cmd:%s) FAILED\n", devname
, cmdstr
);
414 printk("acx: %s: " FUNC
"(cmd:0x%04X) FAILED\n", devname
, cmd
);
423 /***********************************************************************
426 ** usbdev -> Pointer to kernel's usb_device structure
429 ** (int) Errorcode or 0 on success
431 ** This function triggers the loading of the firmware image from harddisk
432 ** and then uploads the firmware to the USB device. After uploading the
433 ** firmware and transmitting the checksum, the device resets and appears
434 ** as a new device on the USB bus (the device we can finally deal with)
437 acxusb_fw_needs_padding(firmware_image_t
*fw_image
, unsigned int usb_maxlen
)
439 unsigned int num_xfers
= ((fw_image
->size
- 1) / usb_maxlen
) + 1;
441 return ((num_xfers
% 2) == 0);
445 acxusb_boot(struct usb_device
*usbdev
, int is_tnetw1450
, int *radio_type
)
447 char filename
[sizeof("tiacx1NNusbcRR")];
449 firmware_image_t
*fw_image
= NULL
;
452 unsigned int blk_len
, inpipe
, outpipe
;
454 u32 img_checksum
, sum
;
461 /* dump_device(usbdev); */
463 usbbuf
= kmalloc(USB_RWMEM_MAXLEN
, GFP_KERNEL
);
466 "acx: no memory for USB transfer buffer (%d bytes)\n",
472 /* Obtain the I/O pipes */
473 outpipe
= usb_sndbulkpipe(usbdev
, 1);
474 inpipe
= usb_rcvbulkpipe(usbdev
, 2);
476 printk(KERN_DEBUG
"acx: wait for device ready\n");
477 for (i
= 0; i
<= 2; i
++) {
478 result
= usb_bulk_msg(usbdev
, inpipe
,
481 &num_processed
, 2000);
483 if ((*(u32
*) & usbbuf
[4] == 0x40000001)
484 && (*(u16
*) & usbbuf
[2] == 0x1)
485 && ((*(u16
*) usbbuf
& 0x3fff) == 0)
486 && ((*(u16
*) usbbuf
& 0xc000) == 0xc000))
493 *radio_type
= usbbuf
[8];
495 /* Obtain the I/O pipes */
496 outpipe
= usb_sndctrlpipe(usbdev
, 0);
497 inpipe
= usb_rcvctrlpipe(usbdev
, 0);
499 /* FIXME: shouldn't be hardcoded */
500 *radio_type
= RADIO_MAXIM_0D
;
503 snprintf(filename
, sizeof(filename
), "tiacx1%02dusbc%02X",
504 is_tnetw1450
* 11, *radio_type
);
506 fw_image
= acx_s_read_fw(&usbdev
->dev
, filename
, &file_size
);
511 log(L_INIT
, "acx: firmware size: %d bytes\n", file_size
);
513 img_checksum
= le32_to_cpu(fw_image
->chksum
);
521 memset(cmdbuf
, 0, 16);
524 acxusb_fw_needs_padding(fw_image
, USB_RWMEM_MAXLEN
);
525 tmplen
= need_padding
? file_size
- 4 : file_size
- 8;
526 *(u16
*) & cmdbuf
[0] = 0xc000;
527 *(u16
*) & cmdbuf
[2] = 0x000b;
528 *(u32
*) & cmdbuf
[4] = tmplen
;
529 *(u32
*) & cmdbuf
[8] = file_size
- 8;
530 *(u32
*) & cmdbuf
[12] = img_checksum
;
533 usb_bulk_msg(usbdev
, outpipe
, cmdbuf
, 16, &num_processed
,
538 p
= (const u8
*)&fw_image
->size
;
540 /* first calculate checksum for image size part */
541 sum
= p
[0] + p
[1] + p
[2] + p
[3];
544 /* now continue checksum for firmware data part */
545 tmplen
= le32_to_cpu(fw_image
->size
);
546 for (i
= 0; i
< tmplen
/* image size */ ; i
++) {
550 if (sum
!= le32_to_cpu(fw_image
->chksum
)) {
551 printk("acx: FATAL: firmware upload: "
552 "checksums don't match! "
553 "(0x%08x vs. 0x%08x)\n", sum
, fw_image
->chksum
);
558 while (offset
< file_size
) {
559 blk_len
= file_size
- offset
;
560 if (blk_len
> USB_RWMEM_MAXLEN
) {
561 blk_len
= USB_RWMEM_MAXLEN
;
565 "acx: uploading firmware (%d bytes, offset=%d)\n",
567 memcpy(usbbuf
, ((u8
*) fw_image
) + offset
, blk_len
);
570 for (i
= 0; i
< blk_len
; i
+= 4) {
571 *(u32
*) p
= be32_to_cpu(*(u32
*) p
);
576 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, blk_len
,
578 if ((result
< 0) || (num_processed
!= blk_len
))
583 printk(KERN_DEBUG
"acx: send padding\n");
584 memset(usbbuf
, 0, 4);
586 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, 4,
588 if ((result
< 0) || (num_processed
!= 4))
591 printk(KERN_DEBUG
"acx: read firmware upload result\n");
592 memset(cmdbuf
, 0, 20); /* additional memset */
594 usb_bulk_msg(usbdev
, inpipe
, cmdbuf
, 20, &num_processed
,
598 if (*(u32
*) & cmdbuf
[4] == 0x40000003)
600 if (*(u32
*) & cmdbuf
[4])
602 if (*(u16
*) & cmdbuf
[16] != 1)
605 val
= *(u32
*) & cmdbuf
[0];
607 || ((val
& 0xc000) != 0xc000))
610 val
= *(u32
*) & cmdbuf
[8];
613 usb_bulk_msg(usbdev
, inpipe
, cmdbuf
, 20,
614 &num_processed
, 2000);
617 val
= *(u32
*) & cmdbuf
[8];
619 /* yup, no "else" here! */
621 memset(usbbuf
, 0, 4);
623 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, 4,
625 if ((result
< 0) || (!num_processed
))
629 printk("acx: TNETW1450 firmware successfully uploaded\n");
638 /* now upload the firmware, slice the data into blocks */
640 while (offset
< file_size
) {
641 blk_len
= file_size
- offset
;
642 if (blk_len
> USB_RWMEM_MAXLEN
) {
643 blk_len
= USB_RWMEM_MAXLEN
;
646 "acx: uploading firmware (%d bytes, offset=%d)\n",
648 memcpy(usbbuf
, ((u8
*) fw_image
) + offset
, blk_len
);
649 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_UPLOAD_FW
, USB_TYPE_VENDOR
| USB_DIR_OUT
, (file_size
- 8) & 0xffff, /* value */
650 (file_size
- 8) >> 16, /* index */
651 usbbuf
, /* dataptr */
653 3000 /* timeout in ms */
657 printk(KERN_ERR
"acx: error %d while uploading "
658 "the firmware, aborting\n", result
);
663 /* finally, send the checksum and reboot the device */
664 /* does this trigger the reboot? */
665 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_UPLOAD_FW
, USB_TYPE_VENDOR
| USB_DIR_OUT
, img_checksum
& 0xffff, /* value */
666 img_checksum
>> 16, /* index */
669 3000 /* timeout in ms */
672 printk(KERN_ERR
"acx: error %d during tx of checksum, "
673 "aborting\n", result
);
676 result
= usb_control_msg(usbdev
, inpipe
, ACX_USB_REQ_ACK_CS
, USB_TYPE_VENDOR
| USB_DIR_IN
, img_checksum
& 0xffff, /* value */
677 img_checksum
>> 16, /* index */
678 usbbuf
, /* dataptr */
680 3000 /* timeout in ms */
683 printk(KERN_ERR
"acx: error %d during ACK of checksum, "
684 "aborting\n", result
);
687 if (*usbbuf
!= 0x10) {
688 printk(KERN_ERR
"acx: invalid checksum?\n");
704 /* FIXME: maybe merge it with usual eeprom reading, into common code? */
705 static void acxusb_s_read_eeprom_version(acx_device_t
* adev
)
709 memset(eeprom_ver
, 0, sizeof(eeprom_ver
));
710 acx_s_interrogate(adev
, &eeprom_ver
, ACX1FF_IE_EEPROM_VER
);
712 /* FIXME: which one of those values to take? */
713 adev
->eeprom_version
= eeprom_ver
[5];
718 * temporary helper function to at least fill important cfgopt members with
719 * useful replacement values until we figure out how one manages to fetch
720 * the configoption struct in the USB device case...
722 static int acxusb_s_fill_configoption(acx_device_t
* adev
)
724 adev
->cfgopt_probe_delay
= 200;
725 adev
->cfgopt_dot11CCAModes
= 4;
726 adev
->cfgopt_dot11Diversity
= 1;
727 adev
->cfgopt_dot11ShortPreambleOption
= 1;
728 adev
->cfgopt_dot11PBCCOption
= 1;
729 adev
->cfgopt_dot11ChannelAgility
= 0;
730 adev
->cfgopt_dot11PhyType
= 5;
731 adev
->cfgopt_dot11TempType
= 1;
735 static const struct ieee80211_ops acxusb_hw_ops
= {
736 .tx
= acx_i_start_xmit
,
737 .conf_tx
= acx_net_conf_tx
,
738 .add_interface
= acx_add_interface
,
739 .remove_interface
= acx_remove_interface
,
740 .start
= acxusb_e_open
,
741 .configure_filter
= acx_i_set_multicast_list
,
742 .stop
= acxusb_e_close
,
743 .config
= acx_net_config
,
744 .config_interface
= acx_config_interface
,
745 .set_key
= acx_net_set_key
,
746 .get_stats
= acx_e_get_stats
,
747 .get_tx_stats
= acx_net_get_tx_stats
,
750 /***********************************************************************
753 ** This function is invoked by the kernel's USB core whenever a new device is
754 ** attached to the system or the module is loaded. It is presented a usb_device
755 ** structure from which information regarding the device is obtained and evaluated.
756 ** In case this driver is able to handle one of the offered devices, it returns
757 ** a non-null pointer to a driver context and thereby claims the device.
762 acxusb_e_probe(struct usb_interface
*intf
, const struct usb_device_id
*devID
)
764 struct usb_device
*usbdev
= interface_to_usbdev(intf
);
765 acx_device_t
*adev
= NULL
;
766 struct usb_config_descriptor
*config
;
767 struct usb_endpoint_descriptor
*epdesc
;
768 struct usb_host_endpoint
*ep
;
769 struct usb_interface_descriptor
*ifdesc
;
771 int numconfigs
, numfaces
, numep
;
776 /* this one needs to be more precise in case there appears
777 * a TNETW1450 from the same vendor */
778 int is_tnetw1450
= (usbdev
->descriptor
.idVendor
!= ACX100_VENDOR_ID
);
779 struct ieee80211_hw
*ieee
;
784 /* Boot the device (i.e. upload the firmware) */
785 acxusb_boot(usbdev
, is_tnetw1450
, &radio_type
);
787 /* TNETW1450-based cards will continue right away with
788 * the same USB ID after booting */
790 /* First check if this is the "unbooted" hardware */
791 if (usbdev
->descriptor
.idProduct
== ACX100_PRODUCT_ID_UNBOOTED
) {
793 /* Boot the device (i.e. upload the firmware) */
794 acxusb_boot(usbdev
, is_tnetw1450
, &radio_type
);
796 /* DWL-120+ will first boot the firmware,
797 * then later have a *separate* probe() run
798 * since its USB ID will have changed after
800 * Since the first probe() run has no
801 * other purpose than booting the firmware,
802 * simply return immediately.
805 "acx: finished booting, returning from probe()\n");
806 result
= OK
; /* success */
809 if (usbdev
->descriptor
.idProduct
!= ACX100_PRODUCT_ID_BOOTED
)
810 /* device not unbooted, but invalid USB ID!? */
815 /* Ok, so it's our device and it has already booted */
817 /* Allocate memory for a network device */
819 ieee
= ieee80211_alloc_hw(sizeof(*adev
), &acxusb_hw_ops
);
821 msg
= "acx: no memory for ieee80211_dev\n";
826 ieee
->flags
&= ~IEEE80211_HW_RX_INCLUDES_FCS
;
827 /* TODO: mainline doesn't support the following flags yet */
829 ~IEEE80211_HW_MONITOR_DURING_OPER &
830 ~IEEE80211_HW_WEP_INCLUDE_IV;
834 /* Register the callbacks for the network device functions */
837 /* Setup private driver context */
839 adev
= ieee2adev(ieee
);
842 adev
->dev_type
= DEVTYPE_USB
;
843 adev
->radio_type
= radio_type
;
845 /* well, actually it's a TNETW1450, but since it
846 * seems to be sufficiently similar to TNETW1130,
847 * I don't want to change large amounts of code now */
848 adev
->chip_type
= CHIPTYPE_ACX111
;
850 adev
->chip_type
= CHIPTYPE_ACX100
;
853 adev
->usbdev
= usbdev
;
854 spin_lock_init(&adev
->spinlock
); /* initial state: unlocked */
855 mutex_init(&adev
->mutex
);
857 /* Check that this is really the hardware we know about.
858 ** If not sure, at least notify the user that he
859 ** may be in trouble...
861 numconfigs
= (int)usbdev
->descriptor
.bNumConfigurations
;
863 printk("acx: number of configurations is %d, "
864 "this driver only knows how to handle 1, "
865 "be prepared for surprises\n", numconfigs
);
867 config
= &usbdev
->config
->desc
;
868 numfaces
= config
->bNumInterfaces
;
870 printk("acx: number of interfaces is %d, "
871 "this driver only knows how to handle 1, "
872 "be prepared for surprises\n", numfaces
);
874 ifdesc
= &intf
->altsetting
->desc
;
875 numep
= ifdesc
->bNumEndpoints
;
876 log(L_DEBUG
, "acx: # of endpoints: %d\n", numep
);
882 /* obtain information about the endpoint
883 ** addresses, begin with some default values
887 for (i
= 0; i
< numep
; i
++) {
888 ep
= usbdev
->ep_in
[i
];
892 if (epdesc
->bmAttributes
& USB_ENDPOINT_XFER_BULK
) {
893 if (epdesc
->bEndpointAddress
& 0x80)
895 epdesc
->bEndpointAddress
& 0xF;
898 epdesc
->bEndpointAddress
& 0xF;
902 log(L_DEBUG
, "acx: bulkout ep: 0x%X\n", adev
->bulkoutep
);
903 log(L_DEBUG
, "acx: bulkin ep: 0x%X\n", adev
->bulkinep
);
905 /* already done by memset: adev->rxtruncsize = 0; */
906 log(L_DEBUG
, "acx: TXBUFSIZE=%d RXBUFSIZE=%d\n",
907 (int)TXBUFSIZE
, (int)RXBUFSIZE
);
909 /* Allocate the RX/TX containers. */
910 adev
->usb_tx
= kmalloc(sizeof(usb_tx_t
) * ACX_TX_URB_CNT
, GFP_KERNEL
);
912 msg
= "acx: no memory for tx container";
915 adev
->usb_rx
= kmalloc(sizeof(usb_rx_t
) * ACX_RX_URB_CNT
, GFP_KERNEL
);
917 msg
= "acx: no memory for rx container";
921 /* Setup URBs for bulk-in/out messages */
922 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
923 adev
->usb_rx
[i
].urb
= usb_alloc_urb(0, GFP_KERNEL
);
924 if (!adev
->usb_rx
[i
].urb
) {
925 msg
= "acx: no memory for input URB\n";
928 adev
->usb_rx
[i
].urb
->status
= 0;
929 adev
->usb_rx
[i
].adev
= adev
;
930 adev
->usb_rx
[i
].busy
= 0;
933 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++) {
934 adev
->usb_tx
[i
].urb
= usb_alloc_urb(0, GFP_KERNEL
);
935 if (!adev
->usb_tx
[i
].urb
) {
936 msg
= "acx: no memory for output URB\n";
939 adev
->usb_tx
[i
].urb
->status
= 0;
940 adev
->usb_tx
[i
].adev
= adev
;
941 adev
->usb_tx
[i
].busy
= 0;
943 adev
->tx_free
= ACX_TX_URB_CNT
;
945 usb_set_intfdata(intf
, adev
);
946 SET_IEEE80211_DEV(ieee
, &intf
->dev
);
948 /* TODO: move all of fw cmds to open()? But then we won't know our MAC addr
949 until ifup (it's available via reading ACX1xx_IE_DOT11_STATION_ID)... */
951 /* put acx out of sleep mode and initialize it */
952 acx_s_issue_cmd(adev
, ACX1xx_CMD_WAKE
, NULL
, 0);
954 result
= acx_s_init_mac(adev
);
958 /* TODO: see similar code in pci.c */
959 acxusb_s_read_eeprom_version(adev
);
960 acxusb_s_fill_configoption(adev
);
961 acx_s_set_defaults(adev
);
962 acx_s_get_firmware_version(adev
);
963 acx_display_hardware_details(adev
);
965 /* MAC_COPY(ndev->dev_addr, adev->dev_addr); */
967 err
= acx_setup_modes(adev
);
969 msg
= "acx: can't register hwmode\n";
973 /* Register the network device */
974 log(L_INIT
, "acx: registering network device\n");
975 result
= ieee80211_register_hw(adev
->ieee
);
977 msg
= "acx: failed to register USB network device "
982 acx_proc_register_entries(ieee
);
985 printk("acx: USB module " ACX_RELEASE
" loaded successfully\n");
987 acx_init_task_scheduler(adev
);
990 great_inquisitor(adev
);
993 /* Everything went OK, we are happy now */
1002 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++)
1003 usb_free_urb(adev
->usb_rx
[i
].urb
);
1004 kfree(adev
->usb_rx
);
1007 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++)
1008 usb_free_urb(adev
->usb_tx
[i
].urb
);
1009 kfree(adev
->usb_tx
);
1011 ieee80211_free_hw(ieee
);
1018 /* no device we could handle, return error. */
1027 /***********************************************************************
1028 ** acxusb_e_disconnect()
1030 ** This function is invoked whenever the user pulls the plug from the USB
1031 ** device or the module is removed from the kernel. In these cases, the
1032 ** network devices have to be taken down and all allocated memory has
1035 void acxusb_e_disconnect(struct usb_interface
*intf
)
1037 unsigned long flags
;
1039 acx_device_t
*adev
= usb_get_intfdata(intf
);
1043 /* No WLAN device... no sense */
1047 /* Unregister network device
1049 * If the interface is up, unregister_netdev() will take
1050 * care of calling our close() function, which takes
1051 * care of unlinking the urbs, sending the device to
1053 * This can't be called with sem or lock held because
1054 * _close() will try to grab it as well if it's called,
1055 * deadlocking the machine.
1057 acx_proc_unregister_entries(adev
->ieee
);
1058 ieee80211_unregister_hw(adev
->ieee
);
1061 acx_lock(adev
, flags
);
1062 /* This device exists no more */
1063 usb_set_intfdata(intf
, NULL
);
1066 * Here we only free them. _close() took care of
1069 for (i
= 0; i
< ACX_RX_URB_CNT
; ++i
) {
1070 usb_free_urb(adev
->usb_rx
[i
].urb
);
1072 for (i
= 0; i
< ACX_TX_URB_CNT
; ++i
) {
1073 usb_free_urb(adev
->usb_tx
[i
].urb
);
1076 /* Freeing containers */
1077 kfree(adev
->usb_rx
);
1078 kfree(adev
->usb_tx
);
1080 acx_unlock(adev
, flags
);
1081 acx_sem_unlock(adev
);
1083 ieee80211_free_hw(adev
->ieee
);
1088 /***********************************************************************
1090 ** This function is called when the user sets up the network interface.
1091 ** It initializes a management timer, sets up the USB card and starts
1092 ** the network tx queue and USB receive.
1094 int acxusb_e_open(struct ieee80211_hw
*hw
)
1096 acx_device_t
*adev
= ieee2adev(hw
);
1097 unsigned long flags
;
1104 /* put the ACX100 out of sleep mode */
1105 // acx_s_issue_cmd(adev, ACX1xx_CMD_WAKE, NULL, 0);
1107 init_timer(&adev
->mgmt_timer
);
1108 adev
->mgmt_timer
.function
= acx_i_timer
;
1109 adev
->mgmt_timer
.data
= (unsigned long)adev
;
1111 /* acx_s_start needs it */
1112 SET_BIT(adev
->dev_state_mask
, ACX_STATE_IFACE_UP
);
1115 /* don't acx_start_queue() here, we need to associate first */
1117 acx_lock(adev
, flags
);
1118 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
1119 adev
->usb_rx
[i
].urb
->status
= 0;
1122 acxusb_l_poll_rx(adev
, &adev
->usb_rx
[0]);
1124 ieee80211_start_queues(adev
->ieee
);
1125 acx_unlock(adev
, flags
);
1127 acx_sem_unlock(adev
);
1134 /***********************************************************************
1137 ** This function stops the network functionality of the interface (invoked
1138 ** when the user calls ifconfig <wlan> down). The tx queue is halted and
1139 ** the device is marked as down. In case there were any pending USB bulk
1140 ** transfers, these are unlinked (asynchronously). The module in-use count
1141 ** is also decreased in this function.
1143 static void acxusb_e_close(struct ieee80211_hw
*hw
)
1145 acx_device_t
*adev
= ieee2adev(hw
);
1146 unsigned long flags
;
1152 if (adev
->dev_state_mask
& ACX_STATE_IFACE_UP
)
1154 // acxusb_e_down(adev);
1155 CLEAR_BIT(adev
->dev_state_mask
, ACX_STATE_IFACE_UP
);
1158 /* Code below is remarkably similar to acxpci_s_down(). Maybe we can merge them? */
1160 acx_free_modes(adev
);
1162 /* Make sure we don't get any more rx requests */
1163 acx_s_issue_cmd(adev
, ACX1xx_CMD_DISABLE_RX
, NULL
, 0);
1164 acx_s_issue_cmd(adev
, ACX1xx_CMD_DISABLE_TX
, NULL
, 0);
1167 * We must do FLUSH *without* holding sem to avoid a deadlock.
1168 * See pci.c:acxpci_s_down() for deails.
1170 acx_sem_unlock(adev
);
1171 flush_scheduled_work();
1174 /* Power down the device */
1175 acx_s_issue_cmd(adev
, ACX1xx_CMD_SLEEP
, NULL
, 0);
1177 /* Stop the transmit queue, mark the device as DOWN */
1178 acx_lock(adev
, flags
);
1179 // acx_stop_queue(ndev, "on ifdown");
1180 // acx_set_status(adev, ACX_STATUS_0_STOPPED);
1181 /* stop pending rx/tx urb transfers */
1182 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++) {
1183 acxusb_unlink_urb(adev
->usb_tx
[i
].urb
);
1184 adev
->usb_tx
[i
].busy
= 0;
1186 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
1187 acxusb_unlink_urb(adev
->usb_rx
[i
].urb
);
1188 adev
->usb_rx
[i
].busy
= 0;
1190 adev
->tx_free
= ACX_TX_URB_CNT
;
1191 acx_unlock(adev
, flags
);
1193 /* Must do this outside of lock */
1194 del_timer_sync(&adev
->mgmt_timer
);
1196 acx_sem_unlock(adev
);
1202 /***********************************************************************
1204 ** This function (re)initiates a bulk-in USB transfer on a given urb
1206 void acxusb_l_poll_rx(acx_device_t
* adev
, usb_rx_t
* rx
)
1208 struct usb_device
*usbdev
;
1211 unsigned int inpipe
;
1216 usbdev
= adev
->usbdev
;
1218 rxnum
= rx
- adev
->usb_rx
;
1220 inpipe
= usb_rcvbulkpipe(usbdev
, adev
->bulkinep
);
1221 if (unlikely(rxurb
->status
== -EINPROGRESS
)) {
1223 "acx: error, rx triggered while rx urb in progress\n");
1224 /* FIXME: this is nasty, receive is being cancelled by this code
1225 * on the other hand, this should not happen anyway...
1227 usb_unlink_urb(rxurb
);
1228 } else if (unlikely(rxurb
->status
== -ECONNRESET
)) {
1229 log(L_USBRXTX
, "acx: _poll_rx: connection reset\n");
1232 rxurb
->actual_length
= 0;
1233 usb_fill_bulk_urb(rxurb
, usbdev
, inpipe
, &rx
->bulkin
, /* dataptr */
1234 RXBUFSIZE
, /* size */
1235 acxusb_i_complete_rx
, /* handler */
1236 rx
/* handler param */
1238 rxurb
->transfer_flags
= URB_ASYNC_UNLINK
;
1240 /* ATOMIC: we may be called from complete_rx() usb callback */
1241 errcode
= usb_submit_urb(rxurb
, GFP_ATOMIC
);
1242 /* FIXME: evaluate the error code! */
1244 "acx: SUBMIT RX (%d) inpipe=0x%X size=%d errcode=%d\n",
1245 rxnum
, inpipe
, (int)RXBUFSIZE
, errcode
);
1251 /***********************************************************************
1252 ** acxusb_i_complete_rx()
1254 ** urb -> pointer to USB request block
1255 ** regs -> pointer to register-buffer for syscalls (see asm/ptrace.h)
1257 ** This function is invoked by USB subsystem whenever a bulk receive
1259 ** The received data is then committed to the network stack and the next
1260 ** USB receive is triggered.
1262 void acxusb_i_complete_rx(struct urb
*urb
)
1268 unsigned long flags
;
1269 int size
, remsize
, packetsize
, rxnum
;
1273 BUG_ON(!urb
->context
);
1275 rx
= (usb_rx_t
*) urb
->context
;
1278 acx_lock(adev
, flags
);
1281 * Happens on disconnect or close. Don't play with the urb.
1282 * Don't resubmit it. It will get unlinked by close()
1284 if (unlikely(!(adev
->dev_state_mask
& ACX_STATE_IFACE_UP
))) {
1286 "acx: rx: device is down, not doing anything\n");
1290 inbuf
= &rx
->bulkin
;
1291 size
= urb
->actual_length
;
1293 rxnum
= rx
- adev
->usb_rx
;
1295 log(L_USBRXTX
, "acx: RETURN RX (%d) status=%d size=%d\n",
1296 rxnum
, urb
->status
, size
);
1298 /* Send the URB that's waiting. */
1299 log(L_USBRXTX
, "acx: rxnum=%d, sending=%d\n",
1301 acxusb_l_poll_rx(adev
, &adev
->usb_rx
[rxnum
^ 1]);
1303 if (unlikely(size
> sizeof(rxbuffer_t
)))
1304 printk("acx_usb: rx too large: %d, please report\n", size
);
1306 /* check if the transfer was aborted */
1307 switch (urb
->status
) {
1308 case 0: /* No error */
1311 printk(KERN_ERR
"acx: rx data overrun\n");
1312 adev
->rxtruncsize
= 0; /* Not valid anymore. */
1315 adev
->rxtruncsize
= 0;
1317 case -ESHUTDOWN
: /* rmmod */
1318 adev
->rxtruncsize
= 0;
1321 adev
->rxtruncsize
= 0;
1322 adev
->stats
.rx_errors
++;
1323 printk("acx: rx error (urb status=%d)\n", urb
->status
);
1327 if (unlikely(!size
))
1328 printk("acx: warning, encountered zerolength rx packet\n");
1330 if (urb
->transfer_buffer
!= inbuf
)
1333 /* check if previous frame was truncated
1334 ** FIXME: this code can only handle truncation
1335 ** of consecutive packets!
1338 if (adev
->rxtruncsize
) {
1340 ptr
= &adev
->rxtruncbuf
;
1341 packetsize
= RXBUF_BYTES_USED(ptr
);
1343 "acx: handling truncated frame (truncsize=%d size=%d "
1344 "packetsize(from trunc)=%d)\n",
1345 adev
->rxtruncsize
, size
, packetsize
);
1347 ptr
= &adev
->rxtruncbuf
;
1348 packetsize
= RXBUF_BYTES_USED(ptr
);
1349 if (acx_debug
& L_USBRXTX
) {
1350 printk("acx: handling truncated frame (truncsize=%d size=%d "
1351 "packetsize(from trunc)=%d)\n",
1352 adev
->rxtruncsize
, size
, packetsize
);
1353 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1354 acx_dump_bytes(inbuf
, RXBUF_HDRSIZE
);
1357 /* bytes needed for rxtruncbuf completion: */
1358 tail_size
= packetsize
- adev
->rxtruncsize
;
1360 if (size
< tail_size
) {
1361 /* there is not enough data to complete this packet,
1362 ** simply append the stuff to the truncation buffer
1364 memcpy(((char *)ptr
) + adev
->rxtruncsize
, inbuf
, size
);
1365 adev
->rxtruncsize
+= size
;
1368 /* ok, this data completes the previously
1369 ** truncated packet. copy it into a descriptor
1370 ** and give it to the rest of the stack */
1372 /* append tail to previously truncated part
1373 ** NB: adev->rxtruncbuf (pointed to by ptr) can't
1374 ** overflow because this is already checked before
1375 ** truncation buffer was filled. See below,
1376 ** "if (packetsize > sizeof(rxbuffer_t))..." code */
1377 memcpy(((char *)ptr
) + adev
->rxtruncsize
, inbuf
,
1380 if (acx_debug
& L_USBRXTX
) {
1381 printk("acx: full trailing packet + 12 bytes:\n");
1382 acx_dump_bytes(inbuf
,
1383 tail_size
+ RXBUF_HDRSIZE
);
1385 acx_l_process_rxbuf(adev
, ptr
);
1386 adev
->rxtruncsize
= 0;
1387 ptr
= (rxbuffer_t
*) (((char *)inbuf
) + tail_size
);
1388 remsize
-= tail_size
;
1390 printk("acx: post-merge size=%d remsize=%d\n",
1394 /* size = USB data block size
1395 ** remsize = unprocessed USB bytes left
1396 ** ptr = current pos in USB data block
1399 if (remsize
< RXBUF_HDRSIZE
) {
1400 printk("acx: truncated rx header (%d bytes)!\n",
1403 acx_dump_bytes(ptr
, remsize
);
1407 packetsize
= RXBUF_BYTES_USED(ptr
);
1409 "acx: packet with packetsize=%d\n", packetsize
);
1411 if (RXBUF_IS_TXSTAT(ptr
)) {
1412 /* do rate handling */
1413 usb_txstatus_t
*stat
= (void *)ptr
;
1416 "acx: tx: stat: mac_cnt_rcvd:%04X "
1417 "queue_index:%02X mac_status:%02X "
1418 "hostdata:%08X rate:%u ack_failures:%02X "
1419 "rts_failures:%02X rts_ok:%02X\n",
1420 stat
->mac_cnt_rcvd
, stat
->queue_index
,
1421 stat
->mac_status
, stat
->hostdata
, stat
->rate
,
1422 stat
->ack_failures
, stat
->rts_failures
,
1425 if (adev->rate_auto && client_no < VEC_SIZE(adev->sta_list)) {
1426 client_t *clt = &adev->sta_list[client_no];
1427 u16 cur = stat->hostdata >> 16;
1429 if (clt && clt->rate_cur == cur) {
1430 acx_l_handle_txrate_auto(adev, clt,
1431 cur, // intended rate
1432 stat->rate, 0, // actually used rate
1433 stat->mac_status, // error?
1434 ACX_TX_URB_CNT - adev->tx_free);
1440 if (packetsize
> sizeof(rxbuffer_t
)) {
1441 printk("acx: packet exceeds max wlan "
1442 "frame size (%d > %d). size=%d\n",
1443 packetsize
, (int)sizeof(rxbuffer_t
), size
);
1445 acx_dump_bytes(ptr
, 16);
1446 /* FIXME: put some real error-handling in here! */
1450 if (packetsize
> remsize
) {
1451 /* frame truncation handling */
1452 if (acx_debug
& L_USBRXTX
) {
1453 printk("acx: need to truncate packet, "
1454 "packetsize=%d remsize=%d "
1456 packetsize
, remsize
, size
);
1457 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1459 memcpy(&adev
->rxtruncbuf
, ptr
, remsize
);
1460 adev
->rxtruncsize
= remsize
;
1464 /* packetsize <= remsize */
1465 /* now handle the received data */
1466 acx_l_process_rxbuf(adev
, ptr
);
1468 ptr
= (rxbuffer_t
*) (((char *)ptr
) + packetsize
);
1469 remsize
-= packetsize
;
1470 if ((acx_debug
& L_USBRXTX
) && remsize
) {
1471 printk("acx: more than one packet in buffer, "
1472 "second packet hdr:");
1473 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1478 acx_unlock(adev
, flags
);
1484 /***********************************************************************
1485 ** acxusb_i_complete_tx()
1487 ** urb -> pointer to USB request block
1488 ** regs -> pointer to register-buffer for syscalls (see asm/ptrace.h)
1490 ** This function is invoked upon termination of a USB transfer.
1492 void acxusb_i_complete_tx(struct urb
*urb
)
1496 unsigned long flags
;
1501 BUG_ON(!urb
->context
);
1503 tx
= (usb_tx_t
*) urb
->context
;
1506 txnum
= tx
- adev
->usb_tx
;
1508 acx_lock(adev
, flags
);
1511 * If the iface isn't up, we don't have any right
1512 * to play with them. The urb may get unlinked.
1514 if (unlikely(!(adev
->dev_state_mask
& ACX_STATE_IFACE_UP
))) {
1515 printk("acx: tx: device is down, not doing anything\n");
1519 printk("acx: RETURN TX (%d): status=%d size=%d\n",
1520 txnum
, urb
->status
, urb
->actual_length
);
1522 /* handle USB transfer errors */
1523 switch (urb
->status
) {
1524 case 0: /* No error */
1532 /* FIXME: real error-handling code here please */
1534 printk(KERN_ERR
"acx: tx error, urb status=%d\n", urb
->status
);
1535 /* FIXME: real error-handling code here please */
1538 /* free the URB and check for more data */
1541 if ((adev
->tx_free
>= TX_START_QUEUE
)
1542 && (adev
->status
== ACX_STATUS_4_ASSOCIATED
)
1543 /* && (acx_queue_stopped(adev->ndev)*/) {
1545 "acx: tx: wake queue (%u free txbufs)\n", adev
->tx_free
);
1546 /* acx_wake_queue(adev->ndev, NULL); */
1550 acx_unlock(adev
, flags
);
1556 /***************************************************************
1557 ** acxusb_l_alloc_tx
1558 ** Actually returns a usb_tx_t* ptr
1560 tx_t
*acxusb_l_alloc_tx(acx_device_t
* adev
)
1567 head
= adev
->tx_head
;
1569 head
= (head
+ 1) % ACX_TX_URB_CNT
;
1570 if (!adev
->usb_tx
[head
].busy
) {
1572 "acx: allocated tx %d\n", head
);
1573 tx
= &adev
->usb_tx
[head
];
1576 /* Keep a few free descs between head and tail of tx ring.
1577 ** It is not absolutely needed, just feels safer */
1578 if (adev
->tx_free
< TX_STOP_QUEUE
) {
1579 log(L_BUF
, "acx: tx: stop queue "
1580 "(%u free txbufs)\n", adev
->tx_free
);
1581 /* acx_stop_queue(adev->ndev, NULL); */
1585 } while (likely(head
!= adev
->tx_head
));
1587 printk_ratelimited("acx: tx buffers full\n");
1589 adev
->tx_head
= head
;
1595 /***************************************************************
1596 ** Used if alloc_tx()'ed buffer needs to be cancelled without doing tx
1598 void acxusb_l_dealloc_tx(tx_t
* tx_opaque
)
1600 usb_tx_t
*tx
= (usb_tx_t
*) tx_opaque
;
1605 /***************************************************************
1607 void *acxusb_l_get_txbuf(acx_device_t
* adev
, tx_t
* tx_opaque
)
1609 usb_tx_t
*tx
= (usb_tx_t
*) tx_opaque
;
1610 return &tx
->bulkout
.data
;
1614 /***************************************************************
1617 ** Can be called from IRQ (rx -> (AP bridging or mgmt response) -> tx).
1618 ** Can be called from acx_i_start_xmit (data frames from net core).
1620 void acxusb_l_tx_data(acx_device_t
* adev
, tx_t
* tx_opaque
, int wlanpkt_len
, struct ieee80211_tx_control
*ctl
,
1621 struct sk_buff
* skb
)
1623 struct usb_device
*usbdev
;
1626 usb_txbuffer_t
*txbuf
;
1628 struct ieee80211_hdr
*whdr
;
1629 unsigned int outpipe
;
1634 tx
= ((usb_tx_t
*) tx_opaque
);
1636 txbuf
= &tx
->bulkout
;
1637 whdr
= (struct ieee80211_hdr
*) txbuf
->data
;
1638 txnum
= tx
- adev
->usb_tx
;
1640 log(L_DEBUG
, "acx: using buf#%d free=%d len=%d\n",
1641 txnum
, adev
->tx_free
, wlanpkt_len
);
1643 switch (adev->mode) {
1644 case ACX_MODE_0_ADHOC:
1646 clt = acx_l_sta_list_get(adev, whdr->a1);
1648 case ACX_MODE_2_STA:
1649 // clt = adev->ap_client;
1655 if (unlikely(clt && !clt->rate_cur)) {
1656 printk("acx: driver bug! bad ratemask\n");
1661 /* fill the USB transfer header */
1662 txbuf
->desc
= cpu_to_le16(USB_TXBUF_TXDESC
);
1663 txbuf
->mpdu_len
= cpu_to_le16(wlanpkt_len
);
1664 txbuf
->queue_index
= 1;
1665 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,24)
1666 txbuf
->rate
= ctl
->tx_rate
; //clt->rate_100;
1668 txbuf
->rate
= ctl
->tx_rate
->bitrate
; //clt->rate_100;
1670 // FIXME(); //This used to have | (clt - adev->ap_client)
1671 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,24)
1672 txbuf
->hostdata
= (ctl
->tx_rate
<< 16);
1674 txbuf
->hostdata
= (ctl
->tx_rate
->bitrate
<< 16);
1676 txbuf
->ctrl1
= DESC_CTL_FIRSTFRAG
;
1677 if (1 == adev
->preamble_cur
)
1678 SET_BIT(txbuf
->ctrl1
, DESC_CTL_SHORT_PREAMBLE
);
1680 txbuf
->data_len
= cpu_to_le16(wlanpkt_len
);
1682 if (unlikely(acx_debug
& L_DATA
)) {
1683 printk("acx: dump of bulk out urb:\n");
1684 acx_dump_bytes(txbuf
, wlanpkt_len
+ USB_TXBUF_HDRSIZE
);
1687 if (unlikely(txurb
->status
== -EINPROGRESS
)) {
1689 ("acx: trying to submit tx urb while already in progress\n");
1692 /* now schedule the USB transfer */
1693 usbdev
= adev
->usbdev
;
1694 outpipe
= usb_sndbulkpipe(usbdev
, adev
->bulkoutep
);
1696 usb_fill_bulk_urb(txurb
, usbdev
, outpipe
, txbuf
, /* dataptr */
1697 wlanpkt_len
+ USB_TXBUF_HDRSIZE
, /* size */
1698 acxusb_i_complete_tx
, /* handler */
1699 tx
/* handler param */
1702 txurb
->transfer_flags
= URB_ASYNC_UNLINK
| URB_ZERO_PACKET
;
1703 ucode
= usb_submit_urb(txurb
, GFP_ATOMIC
);
1704 log(L_USBRXTX
, "acx: SUBMIT TX (%d): outpipe=0x%X buf=%p txsize=%d "
1705 "rate=%u errcode=%d\n", txnum
, outpipe
, txbuf
,
1706 wlanpkt_len
+ USB_TXBUF_HDRSIZE
, txbuf
->rate
, ucode
);
1708 if (unlikely(ucode
)) {
1709 printk(KERN_ERR
"acx: submit_urb() error=%d txsize=%d\n",
1710 ucode
, wlanpkt_len
+ USB_TXBUF_HDRSIZE
);
1712 /* on error, just mark the frame as done and update
1715 adev
->stats
.tx_errors
++;
1718 /* needed? if (adev->tx_free > TX_START_QUEUE) acx_wake_queue(...) */
1724 /***********************************************************************
1725 static void acxusb_i_set_rx_mode(struct net_device *ndev)
1731 /***********************************************************************
1733 #ifdef HAVE_TX_TIMEOUT
1735 void acxusb_i_tx_timeout(struct net_device *ndev)
1737 acx_device_t *adev = ndev2adev(ndev);
1738 unsigned long flags;
1743 acx_lock(adev, flags);
1744 */ /* unlink the URBs */
1745 /* for (i = 0; i < ACX_TX_URB_CNT; i++) {
1746 acxusb_unlink_urb(adev->usb_tx[i].urb);
1747 adev->usb_tx[i].busy = 0;
1749 adev->tx_free = ACX_TX_URB_CNT;
1750 */ /* TODO: stats update */
1751 /* acx_unlock(adev, flags);
1759 /***********************************************************************
1762 ** This function is invoked upon loading of the kernel module.
1763 ** It registers itself at the kernel's USB subsystem.
1765 ** Returns: Errorcode on failure, 0 on success
1767 int __init
acxusb_e_init_module(void)
1769 log(L_INIT
, "acx: USB module " ACX_RELEASE
" initialized, "
1770 "probing for devices...\n");
1771 return usb_register(&acxusb_driver
);
1776 /***********************************************************************
1779 ** This function is invoked as last step of the module unloading. It simply
1780 ** deregisters this module at the kernel's USB subsystem.
1782 void __exit
acxusb_e_cleanup_module(void)
1784 usb_deregister(&acxusb_driver
);
1785 log(L_INIT
, "acx: USB module " ACX_RELEASE
" unloaded\n");
1789 /***********************************************************************
1795 static void dump_device(struct usb_device
*usbdev
)
1798 struct usb_config_descriptor
*cd
;
1800 printk("acx: device dump:\n");
1801 printk("acx: devnum: %d\n", usbdev
->devnum
);
1802 printk("acx: speed: %d\n", usbdev
->speed
);
1803 printk("acx: tt: 0x%X\n", (unsigned int)(usbdev
->tt
));
1804 printk("acx: ttport: %d\n", (unsigned int)(usbdev
->ttport
));
1805 printk("acx: toggle[0]: 0x%X toggle[1]: 0x%X\n",
1806 (unsigned int)(usbdev
->toggle
[0]),
1807 (unsigned int)(usbdev
->toggle
[1]));
1808 /* This saw a change after 2.6.10 */
1809 printk("acx: ep_in wMaxPacketSize: ");
1810 for (i
= 0; i
< 16; ++i
)
1811 if (usbdev
->ep_in
[i
] != NULL
)
1813 usbdev
->ep_in
[i
]->desc
.wMaxPacketSize
);
1815 printk("acx: ep_out wMaxPacketSize: ");
1816 for (i
= 0; i
< ARRAY_SIZE(usbdev
->ep_out
); ++i
)
1817 if (usbdev
->ep_out
[i
] != NULL
)
1819 usbdev
->ep_out
[i
]->desc
.wMaxPacketSize
);
1821 printk("acx: parent: 0x%X\n", (unsigned int)usbdev
->parent
);
1822 printk("acx: bus: 0x%X\n", (unsigned int)usbdev
->bus
);
1824 printk(" configs: ");
1825 for (i
= 0; i
< usbdev
->descriptor
.bNumConfigurations
; i
++)
1826 printk("0x%X ", usbdev
->config
[i
]);
1829 printk("acx: actconfig: %p\n", usbdev
->actconfig
);
1830 dump_device_descriptor(&usbdev
->descriptor
);
1832 cd
= &usbdev
->config
->desc
;
1833 dump_config_descriptor(cd
);
1837 /***********************************************************************
1839 static void dump_config_descriptor(struct usb_config_descriptor
*cd
)
1841 printk("acx: Configuration Descriptor:\n");
1843 printk("acx: NULL\n");
1846 printk("acx: bLength: %d (0x%X)\n", cd
->bLength
, cd
->bLength
);
1847 printk("acx: bDescriptorType: %d (0x%X)\n", cd
->bDescriptorType
,
1848 cd
->bDescriptorType
);
1849 printk("acx: bNumInterfaces: %d (0x%X)\n", cd
->bNumInterfaces
,
1850 cd
->bNumInterfaces
);
1851 printk("acx: bConfigurationValue: %d (0x%X)\n", cd
->bConfigurationValue
,
1852 cd
->bConfigurationValue
);
1853 printk("acx: iConfiguration: %d (0x%X)\n", cd
->iConfiguration
,
1854 cd
->iConfiguration
);
1855 printk("acx: bmAttributes: %d (0x%X)\n", cd
->bmAttributes
,
1857 /* printk("acx: MaxPower: %d (0x%X)\n", cd->bMaxPower, cd->bMaxPower); */
1861 static void dump_device_descriptor(struct usb_device_descriptor
*dd
)
1863 printk("Device Descriptor:\n");
1868 printk("acx: bLength: %d (0x%X)\n", dd
->bLength
, dd
->bLength
);
1869 printk("acx: bDescriptortype: %d (0x%X)\n", dd
->bDescriptorType
,
1870 dd
->bDescriptorType
);
1871 printk("acx: bcdUSB: %d (0x%X)\n", dd
->bcdUSB
, dd
->bcdUSB
);
1872 printk("acx: bDeviceClass: %d (0x%X)\n", dd
->bDeviceClass
,
1874 printk("acx: bDeviceSubClass: %d (0x%X)\n", dd
->bDeviceSubClass
,
1875 dd
->bDeviceSubClass
);
1876 printk("acx: bDeviceProtocol: %d (0x%X)\n", dd
->bDeviceProtocol
,
1877 dd
->bDeviceProtocol
);
1878 printk("acx: bMaxPacketSize0: %d (0x%X)\n", dd
->bMaxPacketSize0
,
1879 dd
->bMaxPacketSize0
);
1880 printk("acx: idVendor: %d (0x%X)\n", dd
->idVendor
, dd
->idVendor
);
1881 printk("acx: idProduct: %d (0x%X)\n", dd
->idProduct
, dd
->idProduct
);
1882 printk("acx: bcdDevice: %d (0x%X)\n", dd
->bcdDevice
, dd
->bcdDevice
);
1883 printk("acx: iManufacturer: %d (0x%X)\n", dd
->iManufacturer
,
1885 printk("acx: iProduct: %d (0x%X)\n", dd
->iProduct
, dd
->iProduct
);
1886 printk("acx: iSerialNumber: %d (0x%X)\n", dd
->iSerialNumber
,
1888 printk("acx: bNumConfigurations: %d (0x%X)\n", dd
->bNumConfigurations
,
1889 dd
->bNumConfigurations
);
1893 #endif /* ACX_DEBUG */