1 /**** (legal) claimer in README
2 ** Copyright (C) 2003 ACX100 Open Source Project
5 /***********************************************************************
6 ** USB support for TI ACX100 based devices. Many parts are taken from
10 ** Martin Wawro <martin.wawro AT uni-dortmund.de>
11 ** Andreas Mohr <andi AT lisas.de>
14 ** callback functions called by USB core are running in interrupt context
15 ** and thus have names with _i_.
17 #define ACX_MAC80211_USB 1
19 #include <linux/version.h>
20 #include <linux/types.h>
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/kernel.h>
24 #include <linux/usb.h>
25 #include <linux/netdevice.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/wireless.h>
29 #include <net/iw_handler.h>
30 #include <linux/vmalloc.h>
31 #include <linux/ethtool.h>
32 #include <linux/workqueue.h>
37 /***********************************************************************
39 /* number of endpoints of an interface */
40 #define NUM_EP(intf) (intf)->altsetting[0].desc.bNumEndpoints
41 #define EP(intf, nr) (intf)->altsetting[0].endpoint[(nr)].desc
42 #define GET_DEV(udev) usb_get_dev((udev))
43 #define PUT_DEV(udev) usb_put_dev((udev))
45 /* removed in 2.6.14. We will use fake value for now
46 * TODO: maybe we should just remove all lines that include
47 * URB_ASYNC_UNLINK somewhere?
49 #define URB_ASYNC_UNLINK 0
51 /***********************************************************************
53 /* ACX100 (TNETW1100) USB device: D-Link DWL-120+ */
54 #define ACX100_VENDOR_ID 0x2001
55 #define ACX100_PRODUCT_ID_UNBOOTED 0x3B01
56 #define ACX100_PRODUCT_ID_BOOTED 0x3B00
58 /* TNETW1450 USB devices */
59 #define VENDOR_ID_DLINK 0x07b8 /* D-Link Corp. */
60 #define PRODUCT_ID_WUG2400 0xb21a /* AboCom WUG2400 or SafeCom SWLUT-54125 */
61 #define VENDOR_ID_AVM_GMBH 0x057c
62 #define PRODUCT_ID_AVM_WLAN_USB 0x5601
63 #define PRODUCT_ID_AVM_WLAN_USB_si 0x6201 /* "self install" named Version:
64 * driver kills kernel on inbound scans from fritz box ?? */
65 #define VENDOR_ID_ZCOM 0x0cde
66 #define PRODUCT_ID_ZCOM_XG750 0x0017 /* not tested yet */
67 #define VENDOR_ID_TI 0x0451
68 #define PRODUCT_ID_TI_UNKNOWN 0x60c5 /* not tested yet */
70 #define ACX_USB_CTRL_TIMEOUT 5500 /* steps in ms */
72 /* Buffer size for fw upload, same for both ACX100 USB and TNETW1450 */
73 #define USB_RWMEM_MAXLEN 2048
75 /* The number of bulk URBs to use */
76 #define ACX_TX_URB_CNT 8
77 #define ACX_RX_URB_CNT 2
79 /* Should be sent to the bulkout endpoint */
80 #define ACX_USB_REQ_UPLOAD_FW 0x10
81 #define ACX_USB_REQ_ACK_CS 0x11
82 #define ACX_USB_REQ_CMD 0x12
84 /***********************************************************************
87 static int acxusb_e_probe(struct usb_interface
*, const struct usb_device_id
*);
88 static void acxusb_e_disconnect(struct usb_interface
*);
89 static void acxusb_i_complete_tx(struct urb
*);
90 static void acxusb_i_complete_rx(struct urb
*);
91 static int acxusb_e_open(struct ieee80211_hw
*);
92 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
93 static int acxusb_e_close(struct ieee80211_hw
*);
95 static void acxusb_e_close(struct ieee80211_hw
*);
97 //static void acxusb_i_set_rx_mode(struct net_device *);
98 static int acxusb_boot(struct usb_device
*, int is_tnetw1450
, int *radio_type
);
100 static void acxusb_l_poll_rx(acx_device_t
* adev
, usb_rx_t
* rx
);
102 /*static void acxusb_i_tx_timeout(struct net_device *);*/
104 /* static void dump_device(struct usb_device *); */
105 /* static void dump_device_descriptor(struct usb_device_descriptor *); */
106 /* static void dump_config_descriptor(struct usb_config_descriptor *); */
108 /***********************************************************************
111 #define TXBUFSIZE sizeof(usb_txbuffer_t)
113 * Now, this is just plain lying, but the device insists in giving us
114 * huge packets. We supply extra space after rxbuffer. Need to understand
117 #define RXBUFSIZE (sizeof(rxbuffer_t) + \
118 (sizeof(usb_rx_t) - sizeof(struct usb_rx_plain)))
120 static const struct usb_device_id acxusb_ids
[] = {
121 {USB_DEVICE(ACX100_VENDOR_ID
, ACX100_PRODUCT_ID_BOOTED
)},
122 {USB_DEVICE(ACX100_VENDOR_ID
, ACX100_PRODUCT_ID_UNBOOTED
)},
123 {USB_DEVICE(VENDOR_ID_DLINK
, PRODUCT_ID_WUG2400
)},
124 {USB_DEVICE(VENDOR_ID_AVM_GMBH
, PRODUCT_ID_AVM_WLAN_USB
)},
125 {USB_DEVICE(VENDOR_ID_AVM_GMBH
, PRODUCT_ID_AVM_WLAN_USB_si
)},
126 {USB_DEVICE(VENDOR_ID_ZCOM
, PRODUCT_ID_ZCOM_XG750
)},
127 {USB_DEVICE(VENDOR_ID_TI
, PRODUCT_ID_TI_UNKNOWN
)},
131 MODULE_DEVICE_TABLE(usb
, acxusb_ids
);
133 /* USB driver data structure as required by the kernel's USB core */
134 static struct usb_driver
137 .probe
= acxusb_e_probe
,
138 .disconnect
= acxusb_e_disconnect
,
139 .id_table
= acxusb_ids
142 /***********************************************************************
146 ** When the function is usb_kill_urb, the urb lifecycle is stopped. This
147 ** function is usually used when the device is disconnected from the system,
148 ** in the disconnect callback. For some drivers, the usb_unlink_urb function
149 ** should be used to tell the USB core to stop an urb. This function does not
150 ** wait for the urb to be fully stopped before returning to the caller.
151 ** This is useful for stoppingthe urb while in an interrupt handler or when
152 ** a spinlock is held, as waiting for a urb to fully stop requires the ability
153 ** for the USB core to put the calling process to sleep. This function requires
154 ** that the URB_ASYNC_UNLINK flag value be set in the urb that is being asked
155 ** to be stopped in order to work properly.
157 ** (URB_ASYNC_UNLINK is obsolete, usb_unlink_urb will always be
158 ** asynchronous while usb_kill_urb is synchronous and should be called
159 ** directly (drivers/usb/core/urb.c))
161 ** In light of this, timeout is just for paranoid reasons...
163 ** Actually, it's useful for debugging. If we reach timeout, we're doing
164 ** something wrong with the urbs.
166 static void acxusb_unlink_urb(struct urb
*urb
)
171 if (urb
->status
== -EINPROGRESS
) {
175 while (--timeout
&& urb
->status
== -EINPROGRESS
) {
179 printk(KERN_ERR
"acx_usb: urb unlink timeout!\n");
185 /***********************************************************************
186 ** EEPROM and PHY read/write helpers
188 /***********************************************************************
189 ** acxusb_s_read_phy_reg
191 int acxusb_s_read_phy_reg(acx_device_t
* adev
, u32 reg
, u8
* charbuf
)
193 /* mem_read_write_t mem; */
197 printk("%s doesn't seem to work yet, disabled.\n", __func__
);
200 mem.addr = cpu_to_le16(reg);
201 mem.type = cpu_to_le16(0x82);
202 mem.len = cpu_to_le32(4);
203 acx_s_issue_cmd(adev, ACX1xx_CMD_MEM_READ, &mem, sizeof(mem));
205 log(L_DEBUG, "read radio PHY[0x%04X]=0x%02X\n", reg, *charbuf);
213 /***********************************************************************
215 int acxusb_s_write_phy_reg(acx_device_t
* adev
, u32 reg
, u8 value
)
217 mem_read_write_t mem
;
221 mem
.addr
= cpu_to_le16(reg
);
222 mem
.type
= cpu_to_le16(0x82);
223 mem
.len
= cpu_to_le32(4);
225 acx_s_issue_cmd(adev
, ACX1xx_CMD_MEM_WRITE
, &mem
, sizeof(mem
));
226 log(L_DEBUG
, "write radio PHY[0x%04X]=0x%02X\n", reg
, value
);
233 /***********************************************************************
234 ** acxusb_s_issue_cmd_timeo
235 ** Excecutes a command in the command mailbox
237 ** buffer = a pointer to the data.
238 ** The data must not include 4 byte command header
241 /* TODO: ideally we shall always know how much we need
242 ** and this shall be 0 */
243 #define BOGUS_SAFETY_PADDING 0x40
246 #define FUNC "issue_cmd"
250 acxusb_s_issue_cmd_timeo(acx_device_t
* adev
,
252 void *buffer
, unsigned buflen
, unsigned timeout
)
256 acxusb_s_issue_cmd_timeo_debug(acx_device_t
* adev
,
260 unsigned timeout
, const char *cmdstr
)
263 /* USB ignores timeout param */
265 struct usb_device
*usbdev
;
272 int acklen
, blocklen
, inpipe
, outpipe
;
278 devname
= wiphy_name(adev
->ieee
->wiphy
);
279 /* no "wlan%%d: ..." please */
280 if (!devname
|| !devname
[0] || devname
[4] == '%')
283 log(L_CTL
, FUNC
"(cmd:%s,buflen:%u,type:0x%04X)\n",
285 buffer
? le16_to_cpu(((acx_ie_generic_t
*) buffer
)->type
) : -1);
287 loc
= kmalloc(buflen
+ 4 + BOGUS_SAFETY_PADDING
, GFP_KERNEL
);
289 printk("%s: " FUNC
"(): no memory for data buffer\n", devname
);
293 /* get context from acx_device */
294 usbdev
= adev
->usbdev
;
296 /* check which kind of command was issued */
297 loc
->cmd
= cpu_to_le16(cmd
);
300 /* NB: buflen == frmlen + 4
302 ** Interrogate: write 8 bytes: (cmd,status,rid,frmlen), then
303 ** read (cmd,status,rid,frmlen,data[frmlen]) back
305 ** Configure: write (cmd,status,rid,frmlen,data[frmlen])
307 ** Possibly bogus special handling of ACX1xx_IE_SCAN_STATUS removed
310 /* now write the parameters of the command if needed */
311 acklen
= buflen
+ 4 + BOGUS_SAFETY_PADDING
;
313 if (buffer
&& buflen
) {
314 /* if it's an INTERROGATE command, just pass the length
315 * of parameters to read, as data */
316 if (cmd
== ACX1xx_CMD_INTERROGATE
) {
320 memcpy(loc
->data
, buffer
, blocklen
);
322 blocklen
+= 4; /* account for cmd,status */
324 /* obtain the I/O pipes */
325 outpipe
= usb_sndctrlpipe(usbdev
, 0);
326 inpipe
= usb_rcvctrlpipe(usbdev
, 0);
327 log(L_CTL
, "ctrl inpipe=0x%X outpipe=0x%X\n", inpipe
, outpipe
);
328 log(L_CTL
, "sending USB control msg (out) (blocklen=%d)\n", blocklen
);
329 if (acx_debug
& L_DATA
)
330 acx_dump_bytes(loc
, blocklen
);
332 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_CMD
, /* request */
333 USB_TYPE_VENDOR
| USB_DIR_OUT
, /* requesttype */
338 ACX_USB_CTRL_TIMEOUT
/* timeout in ms */
341 if (result
== -ENODEV
) {
342 log(L_CTL
, "no device present (unplug?)\n");
346 log(L_CTL
, "wrote %d bytes\n", result
);
351 /* check for device acknowledge */
352 log(L_CTL
, "sending USB control msg (in) (acklen=%d)\n", acklen
);
353 loc
->status
= 0; /* delete old status flag -> set to IDLE */
354 /* shall we zero out the rest? */
355 result
= usb_control_msg(usbdev
, inpipe
, ACX_USB_REQ_CMD
, /* request */
356 USB_TYPE_VENDOR
| USB_DIR_IN
, /* requesttype */
361 ACX_USB_CTRL_TIMEOUT
/* timeout in ms */
364 printk("%s: " FUNC
"(): USB read error %d\n", devname
, result
);
367 if (acx_debug
& L_CTL
) {
368 printk("read %d bytes: ", result
);
369 acx_dump_bytes(loc
, result
);
373 check for result==buflen+4? Was seen:
375 interrogate(type:ACX100_IE_DOT11_ED_THRESHOLD,len:4)
376 issue_cmd(cmd:ACX1xx_CMD_INTERROGATE,buflen:8,type:4111)
377 ctrl inpipe=0x80000280 outpipe=0x80000200
378 sending USB control msg (out) (blocklen=8)
379 01 00 00 00 0F 10 04 00
381 sending USB control msg (in) (acklen=12) sizeof(loc->data
382 read 4 bytes <==== MUST BE 12!!
385 cmd_status
= le16_to_cpu(loc
->status
);
386 if (cmd_status
!= 1) {
387 printk("%s: " FUNC
"(): cmd_status is not SUCCESS: %d (%s)\n",
388 devname
, cmd_status
, acx_cmd_status_str(cmd_status
));
389 /* TODO: goto bad; ? */
391 if ((cmd
== ACX1xx_CMD_INTERROGATE
) && buffer
&& buflen
) {
392 memcpy(buffer
, loc
->data
, buflen
);
393 log(L_CTL
, "response frame: cmd=0x%04X status=%d\n",
394 le16_to_cpu(loc
->cmd
), cmd_status
);
401 /* Give enough info so that callers can avoid
402 ** printing their own diagnostic messages */
404 printk("%s: " FUNC
"(cmd:%s) FAILED\n", devname
, cmdstr
);
406 printk("%s: " FUNC
"(cmd:0x%04X) FAILED\n", devname
, cmd
);
415 /***********************************************************************
418 ** usbdev -> Pointer to kernel's usb_device structure
421 ** (int) Errorcode or 0 on success
423 ** This function triggers the loading of the firmware image from harddisk
424 ** and then uploads the firmware to the USB device. After uploading the
425 ** firmware and transmitting the checksum, the device resets and appears
426 ** as a new device on the USB bus (the device we can finally deal with)
429 acxusb_fw_needs_padding(firmware_image_t
*fw_image
, unsigned int usb_maxlen
)
431 unsigned int num_xfers
= ((fw_image
->size
- 1) / usb_maxlen
) + 1;
433 return ((num_xfers
% 2) == 0);
437 acxusb_boot(struct usb_device
*usbdev
, int is_tnetw1450
, int *radio_type
)
439 char filename
[sizeof("tiacx1NNusbcRR")];
441 firmware_image_t
*fw_image
= NULL
;
444 unsigned int blk_len
, inpipe
, outpipe
;
446 u32 img_checksum
, sum
;
453 /* dump_device(usbdev); */
455 usbbuf
= kmalloc(USB_RWMEM_MAXLEN
, GFP_KERNEL
);
458 "acx: no memory for USB transfer buffer (%d bytes)\n",
464 /* Obtain the I/O pipes */
465 outpipe
= usb_sndbulkpipe(usbdev
, 1);
466 inpipe
= usb_rcvbulkpipe(usbdev
, 2);
468 printk(KERN_DEBUG
"wait for device ready\n");
469 for (i
= 0; i
<= 2; i
++) {
470 result
= usb_bulk_msg(usbdev
, inpipe
,
473 &num_processed
, 2000);
475 if ((*(u32
*) & usbbuf
[4] == 0x40000001)
476 && (*(u16
*) & usbbuf
[2] == 0x1)
477 && ((*(u16
*) usbbuf
& 0x3fff) == 0)
478 && ((*(u16
*) usbbuf
& 0xc000) == 0xc000))
485 *radio_type
= usbbuf
[8];
487 /* Obtain the I/O pipes */
488 outpipe
= usb_sndctrlpipe(usbdev
, 0);
489 inpipe
= usb_rcvctrlpipe(usbdev
, 0);
491 /* FIXME: shouldn't be hardcoded */
492 *radio_type
= RADIO_MAXIM_0D
;
495 snprintf(filename
, sizeof(filename
), "tiacx1%02dusbc%02X",
496 is_tnetw1450
* 11, *radio_type
);
498 fw_image
= acx_s_read_fw(&usbdev
->dev
, filename
, &file_size
);
503 log(L_INIT
, "firmware size: %d bytes\n", file_size
);
505 img_checksum
= le32_to_cpu(fw_image
->chksum
);
513 memset(cmdbuf
, 0, 16);
516 acxusb_fw_needs_padding(fw_image
, USB_RWMEM_MAXLEN
);
517 tmplen
= need_padding
? file_size
- 4 : file_size
- 8;
518 *(u16
*) & cmdbuf
[0] = 0xc000;
519 *(u16
*) & cmdbuf
[2] = 0x000b;
520 *(u32
*) & cmdbuf
[4] = tmplen
;
521 *(u32
*) & cmdbuf
[8] = file_size
- 8;
522 *(u32
*) & cmdbuf
[12] = img_checksum
;
525 usb_bulk_msg(usbdev
, outpipe
, cmdbuf
, 16, &num_processed
,
530 p
= (const u8
*)&fw_image
->size
;
532 /* first calculate checksum for image size part */
533 sum
= p
[0] + p
[1] + p
[2] + p
[3];
536 /* now continue checksum for firmware data part */
537 tmplen
= le32_to_cpu(fw_image
->size
);
538 for (i
= 0; i
< tmplen
/* image size */ ; i
++) {
542 if (sum
!= le32_to_cpu(fw_image
->chksum
)) {
543 printk("acx: FATAL: firmware upload: "
544 "checksums don't match! "
545 "(0x%08x vs. 0x%08x)\n", sum
, fw_image
->chksum
);
550 while (offset
< file_size
) {
551 blk_len
= file_size
- offset
;
552 if (blk_len
> USB_RWMEM_MAXLEN
) {
553 blk_len
= USB_RWMEM_MAXLEN
;
557 "uploading firmware (%d bytes, offset=%d)\n",
559 memcpy(usbbuf
, ((u8
*) fw_image
) + offset
, blk_len
);
562 for (i
= 0; i
< blk_len
; i
+= 4) {
563 *(u32
*) p
= be32_to_cpu(*(u32
*) p
);
568 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, blk_len
,
570 if ((result
< 0) || (num_processed
!= blk_len
))
575 printk(KERN_DEBUG
"send padding\n");
576 memset(usbbuf
, 0, 4);
578 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, 4,
580 if ((result
< 0) || (num_processed
!= 4))
583 printk(KERN_DEBUG
"read firmware upload result\n");
584 memset(cmdbuf
, 0, 20); /* additional memset */
586 usb_bulk_msg(usbdev
, inpipe
, cmdbuf
, 20, &num_processed
,
590 if (*(u32
*) & cmdbuf
[4] == 0x40000003)
592 if (*(u32
*) & cmdbuf
[4])
594 if (*(u16
*) & cmdbuf
[16] != 1)
597 val
= *(u32
*) & cmdbuf
[0];
599 || ((val
& 0xc000) != 0xc000))
602 val
= *(u32
*) & cmdbuf
[8];
605 usb_bulk_msg(usbdev
, inpipe
, cmdbuf
, 20,
606 &num_processed
, 2000);
609 val
= *(u32
*) & cmdbuf
[8];
611 /* yup, no "else" here! */
613 memset(usbbuf
, 0, 4);
615 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, 4,
617 if ((result
< 0) || (!num_processed
))
621 printk("TNETW1450 firmware upload successful!\n");
630 /* now upload the firmware, slice the data into blocks */
632 while (offset
< file_size
) {
633 blk_len
= file_size
- offset
;
634 if (blk_len
> USB_RWMEM_MAXLEN
) {
635 blk_len
= USB_RWMEM_MAXLEN
;
638 "uploading firmware (%d bytes, offset=%d)\n",
640 memcpy(usbbuf
, ((u8
*) fw_image
) + offset
, blk_len
);
641 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_UPLOAD_FW
, USB_TYPE_VENDOR
| USB_DIR_OUT
, (file_size
- 8) & 0xffff, /* value */
642 (file_size
- 8) >> 16, /* index */
643 usbbuf
, /* dataptr */
645 3000 /* timeout in ms */
649 printk(KERN_ERR
"acx: error %d during upload "
650 "of firmware, aborting\n", result
);
655 /* finally, send the checksum and reboot the device */
656 /* does this trigger the reboot? */
657 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_UPLOAD_FW
, USB_TYPE_VENDOR
| USB_DIR_OUT
, img_checksum
& 0xffff, /* value */
658 img_checksum
>> 16, /* index */
661 3000 /* timeout in ms */
664 printk(KERN_ERR
"acx: error %d during tx of checksum, "
665 "aborting\n", result
);
668 result
= usb_control_msg(usbdev
, inpipe
, ACX_USB_REQ_ACK_CS
, USB_TYPE_VENDOR
| USB_DIR_IN
, img_checksum
& 0xffff, /* value */
669 img_checksum
>> 16, /* index */
670 usbbuf
, /* dataptr */
672 3000 /* timeout in ms */
675 printk(KERN_ERR
"acx: error %d during ACK of checksum, "
676 "aborting\n", result
);
679 if (*usbbuf
!= 0x10) {
680 printk(KERN_ERR
"acx: invalid checksum?\n");
696 /* FIXME: maybe merge it with usual eeprom reading, into common code? */
697 static void acxusb_s_read_eeprom_version(acx_device_t
* adev
)
701 memset(eeprom_ver
, 0, sizeof(eeprom_ver
));
702 acx_s_interrogate(adev
, &eeprom_ver
, ACX1FF_IE_EEPROM_VER
);
704 /* FIXME: which one of those values to take? */
705 adev
->eeprom_version
= eeprom_ver
[5];
710 * temporary helper function to at least fill important cfgopt members with
711 * useful replacement values until we figure out how one manages to fetch
712 * the configoption struct in the USB device case...
714 static int acxusb_s_fill_configoption(acx_device_t
* adev
)
716 adev
->cfgopt_probe_delay
= 200;
717 adev
->cfgopt_dot11CCAModes
= 4;
718 adev
->cfgopt_dot11Diversity
= 1;
719 adev
->cfgopt_dot11ShortPreambleOption
= 1;
720 adev
->cfgopt_dot11PBCCOption
= 1;
721 adev
->cfgopt_dot11ChannelAgility
= 0;
722 adev
->cfgopt_dot11PhyType
= 5;
723 adev
->cfgopt_dot11TempType
= 1;
727 static const struct ieee80211_ops acxusb_hw_ops
= {
728 .tx
= acx_i_start_xmit
,
729 .conf_tx
= acx_net_conf_tx
,
730 .add_interface
= acx_add_interface
,
731 .remove_interface
= acx_remove_interface
,
732 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
733 .open
= acxusb_e_open
,
734 .reset
= acx_net_reset
,
735 .set_multicast_list
= acx_i_set_multicast_list
,
737 .start
= acxusb_e_open
,
738 .configure_filter
= acx_i_set_multicast_list
,
740 .stop
= acxusb_e_close
,
741 .config
= acx_net_config
,
742 .config_interface
= acx_config_interface
,
743 .set_key
= acx_net_set_key
,
744 .get_stats
= acx_e_get_stats
,
745 .get_tx_stats
= acx_net_get_tx_stats
,
748 /***********************************************************************
751 ** This function is invoked by the kernel's USB core whenever a new device is
752 ** attached to the system or the module is loaded. It is presented a usb_device
753 ** structure from which information regarding the device is obtained and evaluated.
754 ** In case this driver is able to handle one of the offered devices, it returns
755 ** a non-null pointer to a driver context and thereby claims the device.
760 acxusb_e_probe(struct usb_interface
*intf
, const struct usb_device_id
*devID
)
762 struct usb_device
*usbdev
= interface_to_usbdev(intf
);
763 acx_device_t
*adev
= NULL
;
764 struct usb_config_descriptor
*config
;
765 struct usb_endpoint_descriptor
*epdesc
;
766 struct usb_host_endpoint
*ep
;
767 struct usb_interface_descriptor
*ifdesc
;
769 int numconfigs
, numfaces
, numep
;
774 /* this one needs to be more precise in case there appears
775 * a TNETW1450 from the same vendor */
776 int is_tnetw1450
= (usbdev
->descriptor
.idVendor
!= ACX100_VENDOR_ID
);
777 struct ieee80211_hw
*ieee
;
782 /* Boot the device (i.e. upload the firmware) */
783 acxusb_boot(usbdev
, is_tnetw1450
, &radio_type
);
785 /* TNETW1450-based cards will continue right away with
786 * the same USB ID after booting */
788 /* First check if this is the "unbooted" hardware */
789 if (usbdev
->descriptor
.idProduct
== ACX100_PRODUCT_ID_UNBOOTED
) {
791 /* Boot the device (i.e. upload the firmware) */
792 acxusb_boot(usbdev
, is_tnetw1450
, &radio_type
);
794 /* DWL-120+ will first boot the firmware,
795 * then later have a *separate* probe() run
796 * since its USB ID will have changed after
798 * Since the first probe() run has no
799 * other purpose than booting the firmware,
800 * simply return immediately.
803 "finished booting, returning from probe()\n");
804 result
= OK
; /* success */
807 if (usbdev
->descriptor
.idProduct
!= ACX100_PRODUCT_ID_BOOTED
)
808 /* device not unbooted, but invalid USB ID!? */
813 /* Ok, so it's our device and it has already booted */
815 /* Allocate memory for a network device */
817 ieee
= ieee80211_alloc_hw(sizeof(*adev
), &acxusb_hw_ops
);
819 msg
= "acx: no memory for ieee80211_dev\n";
824 ieee
->flags
&= ~IEEE80211_HW_RX_INCLUDES_FCS
;
825 /* TODO: mainline doesn't support the following flags yet */
827 ~IEEE80211_HW_MONITOR_DURING_OPER &
828 ~IEEE80211_HW_WEP_INCLUDE_IV;
832 /* Register the callbacks for the network device functions */
835 /* Setup private driver context */
837 adev
= ieee2adev(ieee
);
840 adev
->dev_type
= DEVTYPE_USB
;
841 adev
->radio_type
= radio_type
;
843 /* well, actually it's a TNETW1450, but since it
844 * seems to be sufficiently similar to TNETW1130,
845 * I don't want to change large amounts of code now */
846 adev
->chip_type
= CHIPTYPE_ACX111
;
848 adev
->chip_type
= CHIPTYPE_ACX100
;
851 adev
->usbdev
= usbdev
;
852 spin_lock_init(&adev
->spinlock
); /* initial state: unlocked */
853 mutex_init(&adev
->mutex
);
855 /* Check that this is really the hardware we know about.
856 ** If not sure, at least notify the user that he
857 ** may be in trouble...
859 numconfigs
= (int)usbdev
->descriptor
.bNumConfigurations
;
861 printk("acx: number of configurations is %d, "
862 "this driver only knows how to handle 1, "
863 "be prepared for surprises\n", numconfigs
);
865 config
= &usbdev
->config
->desc
;
866 numfaces
= config
->bNumInterfaces
;
868 printk("acx: number of interfaces is %d, "
869 "this driver only knows how to handle 1, "
870 "be prepared for surprises\n", numfaces
);
872 ifdesc
= &intf
->altsetting
->desc
;
873 numep
= ifdesc
->bNumEndpoints
;
874 log(L_DEBUG
, "# of endpoints: %d\n", numep
);
880 /* obtain information about the endpoint
881 ** addresses, begin with some default values
885 for (i
= 0; i
< numep
; i
++) {
886 ep
= usbdev
->ep_in
[i
];
890 if (epdesc
->bmAttributes
& USB_ENDPOINT_XFER_BULK
) {
891 if (epdesc
->bEndpointAddress
& 0x80)
893 epdesc
->bEndpointAddress
& 0xF;
896 epdesc
->bEndpointAddress
& 0xF;
900 log(L_DEBUG
, "bulkout ep: 0x%X\n", adev
->bulkoutep
);
901 log(L_DEBUG
, "bulkin ep: 0x%X\n", adev
->bulkinep
);
903 /* already done by memset: adev->rxtruncsize = 0; */
904 log(L_DEBUG
, "TXBUFSIZE=%d RXBUFSIZE=%d\n",
905 (int)TXBUFSIZE
, (int)RXBUFSIZE
);
907 /* Allocate the RX/TX containers. */
908 adev
->usb_tx
= kmalloc(sizeof(usb_tx_t
) * ACX_TX_URB_CNT
, GFP_KERNEL
);
910 msg
= "acx: no memory for tx container";
913 adev
->usb_rx
= kmalloc(sizeof(usb_rx_t
) * ACX_RX_URB_CNT
, GFP_KERNEL
);
915 msg
= "acx: no memory for rx container";
919 /* Setup URBs for bulk-in/out messages */
920 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
921 adev
->usb_rx
[i
].urb
= usb_alloc_urb(0, GFP_KERNEL
);
922 if (!adev
->usb_rx
[i
].urb
) {
923 msg
= "acx: no memory for input URB\n";
926 adev
->usb_rx
[i
].urb
->status
= 0;
927 adev
->usb_rx
[i
].adev
= adev
;
928 adev
->usb_rx
[i
].busy
= 0;
931 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++) {
932 adev
->usb_tx
[i
].urb
= usb_alloc_urb(0, GFP_KERNEL
);
933 if (!adev
->usb_tx
[i
].urb
) {
934 msg
= "acx: no memory for output URB\n";
937 adev
->usb_tx
[i
].urb
->status
= 0;
938 adev
->usb_tx
[i
].adev
= adev
;
939 adev
->usb_tx
[i
].busy
= 0;
941 adev
->tx_free
= ACX_TX_URB_CNT
;
943 usb_set_intfdata(intf
, adev
);
944 SET_IEEE80211_DEV(ieee
, &intf
->dev
);
946 /* TODO: move all of fw cmds to open()? But then we won't know our MAC addr
947 until ifup (it's available via reading ACX1xx_IE_DOT11_STATION_ID)... */
949 /* put acx out of sleep mode and initialize it */
950 acx_s_issue_cmd(adev
, ACX1xx_CMD_WAKE
, NULL
, 0);
952 result
= acx_s_init_mac(adev
);
956 /* TODO: see similar code in pci.c */
957 acxusb_s_read_eeprom_version(adev
);
958 acxusb_s_fill_configoption(adev
);
959 acx_s_set_defaults(adev
);
960 acx_s_get_firmware_version(adev
);
961 acx_display_hardware_details(adev
);
963 /* MAC_COPY(ndev->dev_addr, adev->dev_addr); */
965 err
= acx_setup_modes(adev
);
967 msg
= "can't register hwmode\n";
971 /* Register the network device */
972 log(L_INIT
, "registering network device\n");
973 result
= ieee80211_register_hw(adev
->ieee
);
975 msg
= "acx: failed to register USB network device "
980 acx_proc_register_entries(ieee
);
983 printk("acx: USB module " ACX_RELEASE
" loaded successfully\n");
985 acx_init_task_scheduler(adev
);
988 great_inquisitor(adev
);
991 /* Everything went OK, we are happy now */
1000 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++)
1001 usb_free_urb(adev
->usb_rx
[i
].urb
);
1002 kfree(adev
->usb_rx
);
1005 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++)
1006 usb_free_urb(adev
->usb_tx
[i
].urb
);
1007 kfree(adev
->usb_tx
);
1009 ieee80211_free_hw(ieee
);
1016 /* no device we could handle, return error. */
1025 /***********************************************************************
1026 ** acxusb_e_disconnect()
1028 ** This function is invoked whenever the user pulls the plug from the USB
1029 ** device or the module is removed from the kernel. In these cases, the
1030 ** network devices have to be taken down and all allocated memory has
1033 void acxusb_e_disconnect(struct usb_interface
*intf
)
1035 unsigned long flags
;
1037 acx_device_t
*adev
= usb_get_intfdata(intf
);
1041 /* No WLAN device... no sense */
1045 /* Unregister network device
1047 * If the interface is up, unregister_netdev() will take
1048 * care of calling our close() function, which takes
1049 * care of unlinking the urbs, sending the device to
1051 * This can't be called with sem or lock held because
1052 * _close() will try to grab it as well if it's called,
1053 * deadlocking the machine.
1055 acx_proc_unregister_entries(adev
->ieee
);
1056 ieee80211_unregister_hw(adev
->ieee
);
1059 acx_lock(adev
, flags
);
1060 /* This device exists no more */
1061 usb_set_intfdata(intf
, NULL
);
1064 * Here we only free them. _close() took care of
1067 for (i
= 0; i
< ACX_RX_URB_CNT
; ++i
) {
1068 usb_free_urb(adev
->usb_rx
[i
].urb
);
1070 for (i
= 0; i
< ACX_TX_URB_CNT
; ++i
) {
1071 usb_free_urb(adev
->usb_tx
[i
].urb
);
1074 /* Freeing containers */
1075 kfree(adev
->usb_rx
);
1076 kfree(adev
->usb_tx
);
1078 acx_unlock(adev
, flags
);
1079 acx_sem_unlock(adev
);
1081 ieee80211_free_hw(adev
->ieee
);
1086 /***********************************************************************
1088 ** This function is called when the user sets up the network interface.
1089 ** It initializes a management timer, sets up the USB card and starts
1090 ** the network tx queue and USB receive.
1092 int acxusb_e_open(struct ieee80211_hw
*hw
)
1094 acx_device_t
*adev
= ieee2adev(hw
);
1095 unsigned long flags
;
1102 /* put the ACX100 out of sleep mode */
1103 // acx_s_issue_cmd(adev, ACX1xx_CMD_WAKE, NULL, 0);
1105 init_timer(&adev
->mgmt_timer
);
1106 adev
->mgmt_timer
.function
= acx_i_timer
;
1107 adev
->mgmt_timer
.data
= (unsigned long)adev
;
1109 /* acx_s_start needs it */
1110 SET_BIT(adev
->dev_state_mask
, ACX_STATE_IFACE_UP
);
1113 /* don't acx_start_queue() here, we need to associate first */
1115 acx_lock(adev
, flags
);
1116 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
1117 adev
->usb_rx
[i
].urb
->status
= 0;
1120 acxusb_l_poll_rx(adev
, &adev
->usb_rx
[0]);
1122 ieee80211_start_queues(adev
->ieee
);
1123 acx_unlock(adev
, flags
);
1125 acx_sem_unlock(adev
);
1132 /***********************************************************************
1135 ** This function stops the network functionality of the interface (invoked
1136 ** when the user calls ifconfig <wlan> down). The tx queue is halted and
1137 ** the device is marked as down. In case there were any pending USB bulk
1138 ** transfers, these are unlinked (asynchronously). The module in-use count
1139 ** is also decreased in this function.
1141 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
1142 int acxusb_e_close(struct ieee80211_hw
*hw
)
1144 static void acxusb_e_close(struct ieee80211_hw
*hw
)
1147 acx_device_t
*adev
= ieee2adev(hw
);
1148 unsigned long flags
;
1154 if (adev
->dev_state_mask
& ACX_STATE_IFACE_UP
)
1156 // acxusb_e_down(adev);
1157 CLEAR_BIT(adev
->dev_state_mask
, ACX_STATE_IFACE_UP
);
1160 /* Code below is remarkably similar to acxpci_s_down(). Maybe we can merge them? */
1162 acx_free_modes(adev
);
1164 /* Make sure we don't get any more rx requests */
1165 acx_s_issue_cmd(adev
, ACX1xx_CMD_DISABLE_RX
, NULL
, 0);
1166 acx_s_issue_cmd(adev
, ACX1xx_CMD_DISABLE_TX
, NULL
, 0);
1169 * We must do FLUSH *without* holding sem to avoid a deadlock.
1170 * See pci.c:acxpci_s_down() for deails.
1172 acx_sem_unlock(adev
);
1173 flush_scheduled_work();
1176 /* Power down the device */
1177 acx_s_issue_cmd(adev
, ACX1xx_CMD_SLEEP
, NULL
, 0);
1179 /* Stop the transmit queue, mark the device as DOWN */
1180 acx_lock(adev
, flags
);
1181 // acx_stop_queue(ndev, "on ifdown");
1182 // acx_set_status(adev, ACX_STATUS_0_STOPPED);
1183 /* stop pending rx/tx urb transfers */
1184 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++) {
1185 acxusb_unlink_urb(adev
->usb_tx
[i
].urb
);
1186 adev
->usb_tx
[i
].busy
= 0;
1188 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
1189 acxusb_unlink_urb(adev
->usb_rx
[i
].urb
);
1190 adev
->usb_rx
[i
].busy
= 0;
1192 adev
->tx_free
= ACX_TX_URB_CNT
;
1193 acx_unlock(adev
, flags
);
1195 /* Must do this outside of lock */
1196 del_timer_sync(&adev
->mgmt_timer
);
1198 acx_sem_unlock(adev
);
1201 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
1207 /***********************************************************************
1209 ** This function (re)initiates a bulk-in USB transfer on a given urb
1211 void acxusb_l_poll_rx(acx_device_t
* adev
, usb_rx_t
* rx
)
1213 struct usb_device
*usbdev
;
1216 unsigned int inpipe
;
1221 usbdev
= adev
->usbdev
;
1223 rxnum
= rx
- adev
->usb_rx
;
1225 inpipe
= usb_rcvbulkpipe(usbdev
, adev
->bulkinep
);
1226 if (unlikely(rxurb
->status
== -EINPROGRESS
)) {
1228 "acx: error, rx triggered while rx urb in progress\n");
1229 /* FIXME: this is nasty, receive is being cancelled by this code
1230 * on the other hand, this should not happen anyway...
1232 usb_unlink_urb(rxurb
);
1233 } else if (unlikely(rxurb
->status
== -ECONNRESET
)) {
1234 log(L_USBRXTX
, "acx_usb: _poll_rx: connection reset\n");
1237 rxurb
->actual_length
= 0;
1238 usb_fill_bulk_urb(rxurb
, usbdev
, inpipe
, &rx
->bulkin
, /* dataptr */
1239 RXBUFSIZE
, /* size */
1240 acxusb_i_complete_rx
, /* handler */
1241 rx
/* handler param */
1243 rxurb
->transfer_flags
= URB_ASYNC_UNLINK
;
1245 /* ATOMIC: we may be called from complete_rx() usb callback */
1246 errcode
= usb_submit_urb(rxurb
, GFP_ATOMIC
);
1247 /* FIXME: evaluate the error code! */
1248 log(L_USBRXTX
, "SUBMIT RX (%d) inpipe=0x%X size=%d errcode=%d\n",
1249 rxnum
, inpipe
, (int)RXBUFSIZE
, errcode
);
1255 /***********************************************************************
1256 ** acxusb_i_complete_rx()
1258 ** urb -> pointer to USB request block
1259 ** regs -> pointer to register-buffer for syscalls (see asm/ptrace.h)
1261 ** This function is invoked by USB subsystem whenever a bulk receive
1263 ** The received data is then committed to the network stack and the next
1264 ** USB receive is triggered.
1266 void acxusb_i_complete_rx(struct urb
*urb
)
1272 unsigned long flags
;
1273 int size
, remsize
, packetsize
, rxnum
;
1277 BUG_ON(!urb
->context
);
1279 rx
= (usb_rx_t
*) urb
->context
;
1282 acx_lock(adev
, flags
);
1285 * Happens on disconnect or close. Don't play with the urb.
1286 * Don't resubmit it. It will get unlinked by close()
1288 if (unlikely(!(adev
->dev_state_mask
& ACX_STATE_IFACE_UP
))) {
1289 log(L_USBRXTX
, "rx: device is down, not doing anything\n");
1293 inbuf
= &rx
->bulkin
;
1294 size
= urb
->actual_length
;
1296 rxnum
= rx
- adev
->usb_rx
;
1298 log(L_USBRXTX
, "RETURN RX (%d) status=%d size=%d\n",
1299 rxnum
, urb
->status
, size
);
1301 /* Send the URB that's waiting. */
1302 log(L_USBRXTX
, "rxnum=%d, sending=%d\n", rxnum
, rxnum
^ 1);
1303 acxusb_l_poll_rx(adev
, &adev
->usb_rx
[rxnum
^ 1]);
1305 if (unlikely(size
> sizeof(rxbuffer_t
)))
1306 printk("acx_usb: rx too large: %d, please report\n", size
);
1308 /* check if the transfer was aborted */
1309 switch (urb
->status
) {
1310 case 0: /* No error */
1313 printk(KERN_ERR
"acx: rx data overrun\n");
1314 adev
->rxtruncsize
= 0; /* Not valid anymore. */
1317 adev
->rxtruncsize
= 0;
1319 case -ESHUTDOWN
: /* rmmod */
1320 adev
->rxtruncsize
= 0;
1323 adev
->rxtruncsize
= 0;
1324 adev
->stats
.rx_errors
++;
1325 printk("acx: rx error (urb status=%d)\n", urb
->status
);
1329 if (unlikely(!size
))
1330 printk("acx: warning, encountered zerolength rx packet\n");
1332 if (urb
->transfer_buffer
!= inbuf
)
1335 /* check if previous frame was truncated
1336 ** FIXME: this code can only handle truncation
1337 ** of consecutive packets!
1340 if (adev
->rxtruncsize
) {
1343 ptr
= &adev
->rxtruncbuf
;
1344 packetsize
= RXBUF_BYTES_USED(ptr
);
1345 if (acx_debug
& L_USBRXTX
) {
1346 printk("handling truncated frame (truncsize=%d size=%d "
1347 "packetsize(from trunc)=%d)\n",
1348 adev
->rxtruncsize
, size
, packetsize
);
1349 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1350 acx_dump_bytes(inbuf
, RXBUF_HDRSIZE
);
1353 /* bytes needed for rxtruncbuf completion: */
1354 tail_size
= packetsize
- adev
->rxtruncsize
;
1356 if (size
< tail_size
) {
1357 /* there is not enough data to complete this packet,
1358 ** simply append the stuff to the truncation buffer
1360 memcpy(((char *)ptr
) + adev
->rxtruncsize
, inbuf
, size
);
1361 adev
->rxtruncsize
+= size
;
1364 /* ok, this data completes the previously
1365 ** truncated packet. copy it into a descriptor
1366 ** and give it to the rest of the stack */
1368 /* append tail to previously truncated part
1369 ** NB: adev->rxtruncbuf (pointed to by ptr) can't
1370 ** overflow because this is already checked before
1371 ** truncation buffer was filled. See below,
1372 ** "if (packetsize > sizeof(rxbuffer_t))..." code */
1373 memcpy(((char *)ptr
) + adev
->rxtruncsize
, inbuf
,
1376 if (acx_debug
& L_USBRXTX
) {
1377 printk("full trailing packet + 12 bytes:\n");
1378 acx_dump_bytes(inbuf
,
1379 tail_size
+ RXBUF_HDRSIZE
);
1381 acx_l_process_rxbuf(adev
, ptr
);
1382 adev
->rxtruncsize
= 0;
1383 ptr
= (rxbuffer_t
*) (((char *)inbuf
) + tail_size
);
1384 remsize
-= tail_size
;
1386 log(L_USBRXTX
, "post-merge size=%d remsize=%d\n",
1390 /* size = USB data block size
1391 ** remsize = unprocessed USB bytes left
1392 ** ptr = current pos in USB data block
1395 if (remsize
< RXBUF_HDRSIZE
) {
1396 printk("acx: truncated rx header (%d bytes)!\n",
1399 acx_dump_bytes(ptr
, remsize
);
1403 packetsize
= RXBUF_BYTES_USED(ptr
);
1404 log(L_USBRXTX
, "packet with packetsize=%d\n", packetsize
);
1406 if (RXBUF_IS_TXSTAT(ptr
)) {
1407 /* do rate handling */
1408 usb_txstatus_t
*stat
= (void *)ptr
;
1410 log(L_USBRXTX
, "tx: stat: mac_cnt_rcvd:%04X "
1411 "queue_index:%02X mac_status:%02X hostdata:%08X "
1412 "rate:%u ack_failures:%02X rts_failures:%02X "
1415 stat
->queue_index
, stat
->mac_status
, stat
->hostdata
,
1416 stat
->rate
, stat
->ack_failures
, stat
->rts_failures
,
1419 if (adev->rate_auto && client_no < VEC_SIZE(adev->sta_list)) {
1420 client_t *clt = &adev->sta_list[client_no];
1421 u16 cur = stat->hostdata >> 16;
1423 if (clt && clt->rate_cur == cur) {
1424 acx_l_handle_txrate_auto(adev, clt,
1425 cur, // intended rate
1426 stat->rate, 0, // actually used rate
1427 stat->mac_status, // error?
1428 ACX_TX_URB_CNT - adev->tx_free);
1434 if (packetsize
> sizeof(rxbuffer_t
)) {
1435 printk("acx: packet exceeds max wlan "
1436 "frame size (%d > %d). size=%d\n",
1437 packetsize
, (int)sizeof(rxbuffer_t
), size
);
1439 acx_dump_bytes(ptr
, 16);
1440 /* FIXME: put some real error-handling in here! */
1444 if (packetsize
> remsize
) {
1445 /* frame truncation handling */
1446 if (acx_debug
& L_USBRXTX
) {
1447 printk("need to truncate packet, "
1448 "packetsize=%d remsize=%d "
1450 packetsize
, remsize
, size
);
1451 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1453 memcpy(&adev
->rxtruncbuf
, ptr
, remsize
);
1454 adev
->rxtruncsize
= remsize
;
1458 /* packetsize <= remsize */
1459 /* now handle the received data */
1460 acx_l_process_rxbuf(adev
, ptr
);
1462 ptr
= (rxbuffer_t
*) (((char *)ptr
) + packetsize
);
1463 remsize
-= packetsize
;
1464 if ((acx_debug
& L_USBRXTX
) && remsize
) {
1465 printk("more than one packet in buffer, "
1466 "second packet hdr:");
1467 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1472 acx_unlock(adev
, flags
);
1478 /***********************************************************************
1479 ** acxusb_i_complete_tx()
1481 ** urb -> pointer to USB request block
1482 ** regs -> pointer to register-buffer for syscalls (see asm/ptrace.h)
1484 ** This function is invoked upon termination of a USB transfer.
1486 void acxusb_i_complete_tx(struct urb
*urb
)
1490 unsigned long flags
;
1495 BUG_ON(!urb
->context
);
1497 tx
= (usb_tx_t
*) urb
->context
;
1500 txnum
= tx
- adev
->usb_tx
;
1502 acx_lock(adev
, flags
);
1505 * If the iface isn't up, we don't have any right
1506 * to play with them. The urb may get unlinked.
1508 if (unlikely(!(adev
->dev_state_mask
& ACX_STATE_IFACE_UP
))) {
1509 log(L_USBRXTX
, "tx: device is down, not doing anything\n");
1513 log(L_USBRXTX
, "RETURN TX (%d): status=%d size=%d\n",
1514 txnum
, urb
->status
, urb
->actual_length
);
1516 /* handle USB transfer errors */
1517 switch (urb
->status
) {
1518 case 0: /* No error */
1526 /* FIXME: real error-handling code here please */
1528 printk(KERN_ERR
"acx: tx error, urb status=%d\n", urb
->status
);
1529 /* FIXME: real error-handling code here please */
1532 /* free the URB and check for more data */
1535 if ((adev
->tx_free
>= TX_START_QUEUE
)
1536 && (adev
->status
== ACX_STATUS_4_ASSOCIATED
)
1537 /* && (acx_queue_stopped(adev->ndev)*/) {
1538 log(L_BUF
, "tx: wake queue (%u free txbufs)\n", adev
->tx_free
);
1539 /* acx_wake_queue(adev->ndev, NULL); */
1543 acx_unlock(adev
, flags
);
1549 /***************************************************************
1550 ** acxusb_l_alloc_tx
1551 ** Actually returns a usb_tx_t* ptr
1553 tx_t
*acxusb_l_alloc_tx(acx_device_t
* adev
)
1560 head
= adev
->tx_head
;
1562 head
= (head
+ 1) % ACX_TX_URB_CNT
;
1563 if (!adev
->usb_tx
[head
].busy
) {
1564 log(L_USBRXTX
, "allocated tx %d\n", head
);
1565 tx
= &adev
->usb_tx
[head
];
1568 /* Keep a few free descs between head and tail of tx ring.
1569 ** It is not absolutely needed, just feels safer */
1570 if (adev
->tx_free
< TX_STOP_QUEUE
) {
1571 log(L_BUF
, "tx: stop queue "
1572 "(%u free txbufs)\n", adev
->tx_free
);
1573 /* acx_stop_queue(adev->ndev, NULL); */
1577 } while (likely(head
!= adev
->tx_head
));
1579 printk_ratelimited("acx: tx buffers full\n");
1581 adev
->tx_head
= head
;
1587 /***************************************************************
1588 ** Used if alloc_tx()'ed buffer needs to be cancelled without doing tx
1590 void acxusb_l_dealloc_tx(tx_t
* tx_opaque
)
1592 usb_tx_t
*tx
= (usb_tx_t
*) tx_opaque
;
1597 /***************************************************************
1599 void *acxusb_l_get_txbuf(acx_device_t
* adev
, tx_t
* tx_opaque
)
1601 usb_tx_t
*tx
= (usb_tx_t
*) tx_opaque
;
1602 return &tx
->bulkout
.data
;
1606 /***************************************************************
1609 ** Can be called from IRQ (rx -> (AP bridging or mgmt response) -> tx).
1610 ** Can be called from acx_i_start_xmit (data frames from net core).
1612 void acxusb_l_tx_data(acx_device_t
* adev
, tx_t
* tx_opaque
, int wlanpkt_len
, struct ieee80211_tx_control
*ctl
,
1613 struct sk_buff
* skb
)
1615 struct usb_device
*usbdev
;
1618 usb_txbuffer_t
*txbuf
;
1620 struct ieee80211_hdr
*whdr
;
1621 unsigned int outpipe
;
1626 tx
= ((usb_tx_t
*) tx_opaque
);
1628 txbuf
= &tx
->bulkout
;
1629 whdr
= (struct ieee80211_hdr
*) txbuf
->data
;
1630 txnum
= tx
- adev
->usb_tx
;
1632 log(L_DEBUG
, "using buf#%d free=%d len=%d\n",
1633 txnum
, adev
->tx_free
, wlanpkt_len
);
1635 switch (adev->mode) {
1636 case ACX_MODE_0_ADHOC:
1638 clt = acx_l_sta_list_get(adev, whdr->a1);
1640 case ACX_MODE_2_STA:
1641 // clt = adev->ap_client;
1647 if (unlikely(clt && !clt->rate_cur)) {
1648 printk("acx: driver bug! bad ratemask\n");
1653 /* fill the USB transfer header */
1654 txbuf
->desc
= cpu_to_le16(USB_TXBUF_TXDESC
);
1655 txbuf
->mpdu_len
= cpu_to_le16(wlanpkt_len
);
1656 txbuf
->queue_index
= 1;
1657 txbuf
->rate
= ctl
->tx_rate
; //clt->rate_100;
1658 // FIXME(); //This used to have | (clt - adev->ap_client)
1659 txbuf
->hostdata
= (ctl
->tx_rate
<< 16);
1660 txbuf
->ctrl1
= DESC_CTL_FIRSTFRAG
;
1661 if (1 == adev
->preamble_cur
)
1662 SET_BIT(txbuf
->ctrl1
, DESC_CTL_SHORT_PREAMBLE
);
1664 txbuf
->data_len
= cpu_to_le16(wlanpkt_len
);
1666 if (unlikely(acx_debug
& L_DATA
)) {
1667 printk("dump of bulk out urb:\n");
1668 acx_dump_bytes(txbuf
, wlanpkt_len
+ USB_TXBUF_HDRSIZE
);
1671 if (unlikely(txurb
->status
== -EINPROGRESS
)) {
1673 ("acx: trying to submit tx urb while already in progress\n");
1676 /* now schedule the USB transfer */
1677 usbdev
= adev
->usbdev
;
1678 outpipe
= usb_sndbulkpipe(usbdev
, adev
->bulkoutep
);
1680 usb_fill_bulk_urb(txurb
, usbdev
, outpipe
, txbuf
, /* dataptr */
1681 wlanpkt_len
+ USB_TXBUF_HDRSIZE
, /* size */
1682 acxusb_i_complete_tx
, /* handler */
1683 tx
/* handler param */
1686 txurb
->transfer_flags
= URB_ASYNC_UNLINK
| URB_ZERO_PACKET
;
1687 ucode
= usb_submit_urb(txurb
, GFP_ATOMIC
);
1688 log(L_USBRXTX
, "SUBMIT TX (%d): outpipe=0x%X buf=%p txsize=%d "
1689 "rate=%u errcode=%d\n", txnum
, outpipe
, txbuf
,
1690 wlanpkt_len
+ USB_TXBUF_HDRSIZE
, txbuf
->rate
, ucode
);
1692 if (unlikely(ucode
)) {
1693 printk(KERN_ERR
"acx: submit_urb() error=%d txsize=%d\n",
1694 ucode
, wlanpkt_len
+ USB_TXBUF_HDRSIZE
);
1696 /* on error, just mark the frame as done and update
1699 adev
->stats
.tx_errors
++;
1702 /* needed? if (adev->tx_free > TX_START_QUEUE) acx_wake_queue(...) */
1708 /***********************************************************************
1709 static void acxusb_i_set_rx_mode(struct net_device *ndev)
1715 /***********************************************************************
1717 #ifdef HAVE_TX_TIMEOUT
1719 void acxusb_i_tx_timeout(struct net_device *ndev)
1721 acx_device_t *adev = ndev2adev(ndev);
1722 unsigned long flags;
1727 acx_lock(adev, flags);
1728 */ /* unlink the URBs */
1729 /* for (i = 0; i < ACX_TX_URB_CNT; i++) {
1730 acxusb_unlink_urb(adev->usb_tx[i].urb);
1731 adev->usb_tx[i].busy = 0;
1733 adev->tx_free = ACX_TX_URB_CNT;
1734 */ /* TODO: stats update */
1735 /* acx_unlock(adev, flags);
1743 /***********************************************************************
1746 ** This function is invoked upon loading of the kernel module.
1747 ** It registers itself at the kernel's USB subsystem.
1749 ** Returns: Errorcode on failure, 0 on success
1751 int __init
acxusb_e_init_module(void)
1753 log(L_INIT
, "USB module " ACX_RELEASE
" initialized, "
1754 "probing for devices...\n");
1755 return usb_register(&acxusb_driver
);
1760 /***********************************************************************
1763 ** This function is invoked as last step of the module unloading. It simply
1764 ** deregisters this module at the kernel's USB subsystem.
1766 void __exit
acxusb_e_cleanup_module(void)
1768 usb_deregister(&acxusb_driver
);
1769 log(L_INIT
, "USB module " ACX_RELEASE
" unloaded\n");
1773 /***********************************************************************
1779 static void dump_device(struct usb_device
*usbdev
)
1782 struct usb_config_descriptor
*cd
;
1784 printk("acx device dump:\n");
1785 printk(" devnum: %d\n", usbdev
->devnum
);
1786 printk(" speed: %d\n", usbdev
->speed
);
1787 printk(" tt: 0x%X\n", (unsigned int)(usbdev
->tt
));
1788 printk(" ttport: %d\n", (unsigned int)(usbdev
->ttport
));
1789 printk(" toggle[0]: 0x%X toggle[1]: 0x%X\n",
1790 (unsigned int)(usbdev
->toggle
[0]),
1791 (unsigned int)(usbdev
->toggle
[1]));
1792 /* This saw a change after 2.6.10 */
1793 printk(" ep_in wMaxPacketSize: ");
1794 for (i
= 0; i
< 16; ++i
)
1795 if (usbdev
->ep_in
[i
] != NULL
)
1797 usbdev
->ep_in
[i
]->desc
.wMaxPacketSize
);
1799 printk(" ep_out wMaxPacketSize: ");
1800 for (i
= 0; i
< ARRAY_SIZE(usbdev
->ep_out
); ++i
)
1801 if (usbdev
->ep_out
[i
] != NULL
)
1803 usbdev
->ep_out
[i
]->desc
.wMaxPacketSize
);
1805 printk(" parent: 0x%X\n", (unsigned int)usbdev
->parent
);
1806 printk(" bus: 0x%X\n", (unsigned int)usbdev
->bus
);
1808 printk(" configs: ");
1809 for (i
= 0; i
< usbdev
->descriptor
.bNumConfigurations
; i
++)
1810 printk("0x%X ", usbdev
->config
[i
]);
1813 printk(" actconfig: %p\n", usbdev
->actconfig
);
1814 dump_device_descriptor(&usbdev
->descriptor
);
1816 cd
= &usbdev
->config
->desc
;
1817 dump_config_descriptor(cd
);
1821 /***********************************************************************
1823 static void dump_config_descriptor(struct usb_config_descriptor
*cd
)
1825 printk("Configuration Descriptor:\n");
1830 printk(" bLength: %d (0x%X)\n", cd
->bLength
, cd
->bLength
);
1831 printk(" bDescriptorType: %d (0x%X)\n", cd
->bDescriptorType
,
1832 cd
->bDescriptorType
);
1833 printk(" bNumInterfaces: %d (0x%X)\n", cd
->bNumInterfaces
,
1834 cd
->bNumInterfaces
);
1835 printk(" bConfigurationValue: %d (0x%X)\n", cd
->bConfigurationValue
,
1836 cd
->bConfigurationValue
);
1837 printk(" iConfiguration: %d (0x%X)\n", cd
->iConfiguration
,
1838 cd
->iConfiguration
);
1839 printk(" bmAttributes: %d (0x%X)\n", cd
->bmAttributes
,
1841 /* printk(" MaxPower: %d (0x%X)\n", cd->bMaxPower, cd->bMaxPower); */
1845 static void dump_device_descriptor(struct usb_device_descriptor
*dd
)
1847 printk("Device Descriptor:\n");
1852 printk(" bLength: %d (0x%X)\n", dd
->bLength
, dd
->bLength
);
1853 printk(" bDescriptortype: %d (0x%X)\n", dd
->bDescriptorType
,
1854 dd
->bDescriptorType
);
1855 printk(" bcdUSB: %d (0x%X)\n", dd
->bcdUSB
, dd
->bcdUSB
);
1856 printk(" bDeviceClass: %d (0x%X)\n", dd
->bDeviceClass
,
1858 printk(" bDeviceSubClass: %d (0x%X)\n", dd
->bDeviceSubClass
,
1859 dd
->bDeviceSubClass
);
1860 printk(" bDeviceProtocol: %d (0x%X)\n", dd
->bDeviceProtocol
,
1861 dd
->bDeviceProtocol
);
1862 printk(" bMaxPacketSize0: %d (0x%X)\n", dd
->bMaxPacketSize0
,
1863 dd
->bMaxPacketSize0
);
1864 printk(" idVendor: %d (0x%X)\n", dd
->idVendor
, dd
->idVendor
);
1865 printk(" idProduct: %d (0x%X)\n", dd
->idProduct
, dd
->idProduct
);
1866 printk(" bcdDevice: %d (0x%X)\n", dd
->bcdDevice
, dd
->bcdDevice
);
1867 printk(" iManufacturer: %d (0x%X)\n", dd
->iManufacturer
,
1869 printk(" iProduct: %d (0x%X)\n", dd
->iProduct
, dd
->iProduct
);
1870 printk(" iSerialNumber: %d (0x%X)\n", dd
->iSerialNumber
,
1872 printk(" bNumConfigurations: %d (0x%X)\n", dd
->bNumConfigurations
,
1873 dd
->bNumConfigurations
);
1877 #endif /* ACX_DEBUG */