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 void acxusb_put_devname(acx_device_t
*adev
, struct ethtool_drvinfo
*info
)
145 usb_make_path(adev
->usbdev
, info
->bus_info
, sizeof info
->bus_info
);
147 /***********************************************************************
151 ** When the function is usb_kill_urb, the urb lifecycle is stopped. This
152 ** function is usually used when the device is disconnected from the system,
153 ** in the disconnect callback. For some drivers, the usb_unlink_urb function
154 ** should be used to tell the USB core to stop an urb. This function does not
155 ** wait for the urb to be fully stopped before returning to the caller.
156 ** This is useful for stoppingthe urb while in an interrupt handler or when
157 ** a spinlock is held, as waiting for a urb to fully stop requires the ability
158 ** for the USB core to put the calling process to sleep. This function requires
159 ** that the URB_ASYNC_UNLINK flag value be set in the urb that is being asked
160 ** to be stopped in order to work properly.
162 ** (URB_ASYNC_UNLINK is obsolete, usb_unlink_urb will always be
163 ** asynchronous while usb_kill_urb is synchronous and should be called
164 ** directly (drivers/usb/core/urb.c))
166 ** In light of this, timeout is just for paranoid reasons...
168 ** Actually, it's useful for debugging. If we reach timeout, we're doing
169 ** something wrong with the urbs.
171 static void acxusb_unlink_urb(struct urb
*urb
)
176 if (urb
->status
== -EINPROGRESS
) {
180 while (--timeout
&& urb
->status
== -EINPROGRESS
) {
184 printk(KERN_ERR
"acx_usb: urb unlink timeout!\n");
190 /***********************************************************************
191 ** EEPROM and PHY read/write helpers
193 /***********************************************************************
194 ** acxusb_s_read_phy_reg
196 int acxusb_s_read_phy_reg(acx_device_t
* adev
, u32 reg
, u8
* charbuf
)
198 /* mem_read_write_t mem; */
202 printk("%s doesn't seem to work yet, disabled.\n", __func__
);
205 mem.addr = cpu_to_le16(reg);
206 mem.type = cpu_to_le16(0x82);
207 mem.len = cpu_to_le32(4);
208 acx_s_issue_cmd(adev, ACX1xx_CMD_MEM_READ, &mem, sizeof(mem));
210 log(L_DEBUG, "read radio PHY[0x%04X]=0x%02X\n", reg, *charbuf);
218 /***********************************************************************
220 int acxusb_s_write_phy_reg(acx_device_t
* adev
, u32 reg
, u8 value
)
222 mem_read_write_t mem
;
226 mem
.addr
= cpu_to_le16(reg
);
227 mem
.type
= cpu_to_le16(0x82);
228 mem
.len
= cpu_to_le32(4);
230 acx_s_issue_cmd(adev
, ACX1xx_CMD_MEM_WRITE
, &mem
, sizeof(mem
));
231 log(L_DEBUG
, "write radio PHY[0x%04X]=0x%02X\n", reg
, value
);
238 /***********************************************************************
239 ** acxusb_s_issue_cmd_timeo
240 ** Excecutes a command in the command mailbox
242 ** buffer = a pointer to the data.
243 ** The data must not include 4 byte command header
246 /* TODO: ideally we shall always know how much we need
247 ** and this shall be 0 */
248 #define BOGUS_SAFETY_PADDING 0x40
251 #define FUNC "issue_cmd"
255 acxusb_s_issue_cmd_timeo(acx_device_t
* adev
,
257 void *buffer
, unsigned buflen
, unsigned timeout
)
261 acxusb_s_issue_cmd_timeo_debug(acx_device_t
* adev
,
265 unsigned timeout
, const char *cmdstr
)
268 /* USB ignores timeout param */
270 struct usb_device
*usbdev
;
277 int acklen
, blocklen
, inpipe
, outpipe
;
283 devname
= wiphy_name(adev
->ieee
->wiphy
);
284 /* no "wlan%%d: ..." please */
285 if (!devname
|| !devname
[0] || devname
[4] == '%')
288 log(L_CTL
, FUNC
"(cmd:%s,buflen:%u,type:0x%04X)\n",
290 buffer
? le16_to_cpu(((acx_ie_generic_t
*) buffer
)->type
) : -1);
292 loc
= kmalloc(buflen
+ 4 + BOGUS_SAFETY_PADDING
, GFP_KERNEL
);
294 printk("%s: " FUNC
"(): no memory for data buffer\n", devname
);
298 /* get context from acx_device */
299 usbdev
= adev
->usbdev
;
301 /* check which kind of command was issued */
302 loc
->cmd
= cpu_to_le16(cmd
);
305 /* NB: buflen == frmlen + 4
307 ** Interrogate: write 8 bytes: (cmd,status,rid,frmlen), then
308 ** read (cmd,status,rid,frmlen,data[frmlen]) back
310 ** Configure: write (cmd,status,rid,frmlen,data[frmlen])
312 ** Possibly bogus special handling of ACX1xx_IE_SCAN_STATUS removed
315 /* now write the parameters of the command if needed */
316 acklen
= buflen
+ 4 + BOGUS_SAFETY_PADDING
;
318 if (buffer
&& buflen
) {
319 /* if it's an INTERROGATE command, just pass the length
320 * of parameters to read, as data */
321 if (cmd
== ACX1xx_CMD_INTERROGATE
) {
325 memcpy(loc
->data
, buffer
, blocklen
);
327 blocklen
+= 4; /* account for cmd,status */
329 /* obtain the I/O pipes */
330 outpipe
= usb_sndctrlpipe(usbdev
, 0);
331 inpipe
= usb_rcvctrlpipe(usbdev
, 0);
332 log(L_CTL
, "ctrl inpipe=0x%X outpipe=0x%X\n", inpipe
, outpipe
);
333 log(L_CTL
, "sending USB control msg (out) (blocklen=%d)\n", blocklen
);
334 if (acx_debug
& L_DATA
)
335 acx_dump_bytes(loc
, blocklen
);
337 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_CMD
, /* request */
338 USB_TYPE_VENDOR
| USB_DIR_OUT
, /* requesttype */
343 ACX_USB_CTRL_TIMEOUT
/* timeout in ms */
346 if (result
== -ENODEV
) {
347 log(L_CTL
, "no device present (unplug?)\n");
351 log(L_CTL
, "wrote %d bytes\n", result
);
356 /* check for device acknowledge */
357 log(L_CTL
, "sending USB control msg (in) (acklen=%d)\n", acklen
);
358 loc
->status
= 0; /* delete old status flag -> set to IDLE */
359 /* shall we zero out the rest? */
360 result
= usb_control_msg(usbdev
, inpipe
, ACX_USB_REQ_CMD
, /* request */
361 USB_TYPE_VENDOR
| USB_DIR_IN
, /* requesttype */
366 ACX_USB_CTRL_TIMEOUT
/* timeout in ms */
369 printk("%s: " FUNC
"(): USB read error %d\n", devname
, result
);
372 if (acx_debug
& L_CTL
) {
373 printk("read %d bytes: ", result
);
374 acx_dump_bytes(loc
, result
);
378 check for result==buflen+4? Was seen:
380 interrogate(type:ACX100_IE_DOT11_ED_THRESHOLD,len:4)
381 issue_cmd(cmd:ACX1xx_CMD_INTERROGATE,buflen:8,type:4111)
382 ctrl inpipe=0x80000280 outpipe=0x80000200
383 sending USB control msg (out) (blocklen=8)
384 01 00 00 00 0F 10 04 00
386 sending USB control msg (in) (acklen=12) sizeof(loc->data
387 read 4 bytes <==== MUST BE 12!!
390 cmd_status
= le16_to_cpu(loc
->status
);
391 if (cmd_status
!= 1) {
392 printk("%s: " FUNC
"(): cmd_status is not SUCCESS: %d (%s)\n",
393 devname
, cmd_status
, acx_cmd_status_str(cmd_status
));
394 /* TODO: goto bad; ? */
396 if ((cmd
== ACX1xx_CMD_INTERROGATE
) && buffer
&& buflen
) {
397 memcpy(buffer
, loc
->data
, buflen
);
398 log(L_CTL
, "response frame: cmd=0x%04X status=%d\n",
399 le16_to_cpu(loc
->cmd
), cmd_status
);
406 /* Give enough info so that callers can avoid
407 ** printing their own diagnostic messages */
409 printk("%s: " FUNC
"(cmd:%s) FAILED\n", devname
, cmdstr
);
411 printk("%s: " FUNC
"(cmd:0x%04X) FAILED\n", devname
, cmd
);
420 /***********************************************************************
423 ** usbdev -> Pointer to kernel's usb_device structure
426 ** (int) Errorcode or 0 on success
428 ** This function triggers the loading of the firmware image from harddisk
429 ** and then uploads the firmware to the USB device. After uploading the
430 ** firmware and transmitting the checksum, the device resets and appears
431 ** as a new device on the USB bus (the device we can finally deal with)
434 acxusb_fw_needs_padding(firmware_image_t
*fw_image
, unsigned int usb_maxlen
)
436 unsigned int num_xfers
= ((fw_image
->size
- 1) / usb_maxlen
) + 1;
438 return ((num_xfers
% 2) == 0);
442 acxusb_boot(struct usb_device
*usbdev
, int is_tnetw1450
, int *radio_type
)
444 char filename
[sizeof("tiacx1NNusbcRR")];
446 firmware_image_t
*fw_image
= NULL
;
449 unsigned int blk_len
, inpipe
, outpipe
;
451 u32 img_checksum
, sum
;
458 /* dump_device(usbdev); */
460 usbbuf
= kmalloc(USB_RWMEM_MAXLEN
, GFP_KERNEL
);
463 "acx: no memory for USB transfer buffer (%d bytes)\n",
469 /* Obtain the I/O pipes */
470 outpipe
= usb_sndbulkpipe(usbdev
, 1);
471 inpipe
= usb_rcvbulkpipe(usbdev
, 2);
473 printk(KERN_DEBUG
"wait for device ready\n");
474 for (i
= 0; i
<= 2; i
++) {
475 result
= usb_bulk_msg(usbdev
, inpipe
,
478 &num_processed
, 2000);
480 if ((*(u32
*) & usbbuf
[4] == 0x40000001)
481 && (*(u16
*) & usbbuf
[2] == 0x1)
482 && ((*(u16
*) usbbuf
& 0x3fff) == 0)
483 && ((*(u16
*) usbbuf
& 0xc000) == 0xc000))
490 *radio_type
= usbbuf
[8];
492 /* Obtain the I/O pipes */
493 outpipe
= usb_sndctrlpipe(usbdev
, 0);
494 inpipe
= usb_rcvctrlpipe(usbdev
, 0);
496 /* FIXME: shouldn't be hardcoded */
497 *radio_type
= RADIO_MAXIM_0D
;
500 snprintf(filename
, sizeof(filename
), "tiacx1%02dusbc%02X",
501 is_tnetw1450
* 11, *radio_type
);
503 fw_image
= acx_s_read_fw(&usbdev
->dev
, filename
, &file_size
);
508 log(L_INIT
, "firmware size: %d bytes\n", file_size
);
510 img_checksum
= le32_to_cpu(fw_image
->chksum
);
518 memset(cmdbuf
, 0, 16);
521 acxusb_fw_needs_padding(fw_image
, USB_RWMEM_MAXLEN
);
522 tmplen
= need_padding
? file_size
- 4 : file_size
- 8;
523 *(u16
*) & cmdbuf
[0] = 0xc000;
524 *(u16
*) & cmdbuf
[2] = 0x000b;
525 *(u32
*) & cmdbuf
[4] = tmplen
;
526 *(u32
*) & cmdbuf
[8] = file_size
- 8;
527 *(u32
*) & cmdbuf
[12] = img_checksum
;
530 usb_bulk_msg(usbdev
, outpipe
, cmdbuf
, 16, &num_processed
,
535 p
= (const u8
*)&fw_image
->size
;
537 /* first calculate checksum for image size part */
538 sum
= p
[0] + p
[1] + p
[2] + p
[3];
541 /* now continue checksum for firmware data part */
542 tmplen
= le32_to_cpu(fw_image
->size
);
543 for (i
= 0; i
< tmplen
/* image size */ ; i
++) {
547 if (sum
!= le32_to_cpu(fw_image
->chksum
)) {
548 printk("acx: FATAL: firmware upload: "
549 "checksums don't match! "
550 "(0x%08x vs. 0x%08x)\n", sum
, fw_image
->chksum
);
555 while (offset
< file_size
) {
556 blk_len
= file_size
- offset
;
557 if (blk_len
> USB_RWMEM_MAXLEN
) {
558 blk_len
= USB_RWMEM_MAXLEN
;
562 "uploading firmware (%d bytes, offset=%d)\n",
564 memcpy(usbbuf
, ((u8
*) fw_image
) + offset
, blk_len
);
567 for (i
= 0; i
< blk_len
; i
+= 4) {
568 *(u32
*) p
= be32_to_cpu(*(u32
*) p
);
573 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, blk_len
,
575 if ((result
< 0) || (num_processed
!= blk_len
))
580 printk(KERN_DEBUG
"send padding\n");
581 memset(usbbuf
, 0, 4);
583 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, 4,
585 if ((result
< 0) || (num_processed
!= 4))
588 printk(KERN_DEBUG
"read firmware upload result\n");
589 memset(cmdbuf
, 0, 20); /* additional memset */
591 usb_bulk_msg(usbdev
, inpipe
, cmdbuf
, 20, &num_processed
,
595 if (*(u32
*) & cmdbuf
[4] == 0x40000003)
597 if (*(u32
*) & cmdbuf
[4])
599 if (*(u16
*) & cmdbuf
[16] != 1)
602 val
= *(u32
*) & cmdbuf
[0];
604 || ((val
& 0xc000) != 0xc000))
607 val
= *(u32
*) & cmdbuf
[8];
610 usb_bulk_msg(usbdev
, inpipe
, cmdbuf
, 20,
611 &num_processed
, 2000);
614 val
= *(u32
*) & cmdbuf
[8];
616 /* yup, no "else" here! */
618 memset(usbbuf
, 0, 4);
620 usb_bulk_msg(usbdev
, outpipe
, usbbuf
, 4,
622 if ((result
< 0) || (!num_processed
))
626 printk("TNETW1450 firmware upload successful!\n");
635 /* now upload the firmware, slice the data into blocks */
637 while (offset
< file_size
) {
638 blk_len
= file_size
- offset
;
639 if (blk_len
> USB_RWMEM_MAXLEN
) {
640 blk_len
= USB_RWMEM_MAXLEN
;
643 "uploading firmware (%d bytes, offset=%d)\n",
645 memcpy(usbbuf
, ((u8
*) fw_image
) + offset
, blk_len
);
646 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_UPLOAD_FW
, USB_TYPE_VENDOR
| USB_DIR_OUT
, (file_size
- 8) & 0xffff, /* value */
647 (file_size
- 8) >> 16, /* index */
648 usbbuf
, /* dataptr */
650 3000 /* timeout in ms */
654 printk(KERN_ERR
"acx: error %d during upload "
655 "of firmware, aborting\n", result
);
660 /* finally, send the checksum and reboot the device */
661 /* does this trigger the reboot? */
662 result
= usb_control_msg(usbdev
, outpipe
, ACX_USB_REQ_UPLOAD_FW
, USB_TYPE_VENDOR
| USB_DIR_OUT
, img_checksum
& 0xffff, /* value */
663 img_checksum
>> 16, /* index */
666 3000 /* timeout in ms */
669 printk(KERN_ERR
"acx: error %d during tx of checksum, "
670 "aborting\n", result
);
673 result
= usb_control_msg(usbdev
, inpipe
, ACX_USB_REQ_ACK_CS
, USB_TYPE_VENDOR
| USB_DIR_IN
, img_checksum
& 0xffff, /* value */
674 img_checksum
>> 16, /* index */
675 usbbuf
, /* dataptr */
677 3000 /* timeout in ms */
680 printk(KERN_ERR
"acx: error %d during ACK of checksum, "
681 "aborting\n", result
);
684 if (*usbbuf
!= 0x10) {
685 printk(KERN_ERR
"acx: invalid checksum?\n");
701 /* FIXME: maybe merge it with usual eeprom reading, into common code? */
702 static void acxusb_s_read_eeprom_version(acx_device_t
* adev
)
706 memset(eeprom_ver
, 0, sizeof(eeprom_ver
));
707 acx_s_interrogate(adev
, &eeprom_ver
, ACX1FF_IE_EEPROM_VER
);
709 /* FIXME: which one of those values to take? */
710 adev
->eeprom_version
= eeprom_ver
[5];
715 * temporary helper function to at least fill important cfgopt members with
716 * useful replacement values until we figure out how one manages to fetch
717 * the configoption struct in the USB device case...
719 static int acxusb_s_fill_configoption(acx_device_t
* adev
)
721 adev
->cfgopt_probe_delay
= 200;
722 adev
->cfgopt_dot11CCAModes
= 4;
723 adev
->cfgopt_dot11Diversity
= 1;
724 adev
->cfgopt_dot11ShortPreambleOption
= 1;
725 adev
->cfgopt_dot11PBCCOption
= 1;
726 adev
->cfgopt_dot11ChannelAgility
= 0;
727 adev
->cfgopt_dot11PhyType
= 5;
728 adev
->cfgopt_dot11TempType
= 1;
732 static const struct ieee80211_ops acxusb_hw_ops
= {
733 .tx
= acx_i_start_xmit
,
734 .conf_tx
= acx_net_conf_tx
,
735 .add_interface
= acx_add_interface
,
736 .remove_interface
= acx_remove_interface
,
737 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
738 .open
= acxusb_e_open
,
739 .reset
= acx_net_reset
,
740 .set_multicast_list
= acx_i_set_multicast_list
,
742 .start
= acxusb_e_open
,
743 .configure_filter
= acx_i_set_multicast_list
,
745 .stop
= acxusb_e_close
,
746 .config
= acx_net_config
,
747 .config_interface
= acx_config_interface
,
748 .set_key
= acx_net_set_key
,
749 .get_stats
= acx_e_get_stats
,
750 .get_tx_stats
= acx_net_get_tx_stats
,
753 /***********************************************************************
756 ** This function is invoked by the kernel's USB core whenever a new device is
757 ** attached to the system or the module is loaded. It is presented a usb_device
758 ** structure from which information regarding the device is obtained and evaluated.
759 ** In case this driver is able to handle one of the offered devices, it returns
760 ** a non-null pointer to a driver context and thereby claims the device.
765 acxusb_e_probe(struct usb_interface
*intf
, const struct usb_device_id
*devID
)
767 struct usb_device
*usbdev
= interface_to_usbdev(intf
);
768 acx_device_t
*adev
= NULL
;
769 struct usb_config_descriptor
*config
;
770 struct usb_endpoint_descriptor
*epdesc
;
771 struct usb_host_endpoint
*ep
;
772 struct usb_interface_descriptor
*ifdesc
;
774 int numconfigs
, numfaces
, numep
;
778 /* this one needs to be more precise in case there appears
779 * a TNETW1450 from the same vendor */
780 int is_tnetw1450
= (usbdev
->descriptor
.idVendor
!= ACX100_VENDOR_ID
);
781 struct ieee80211_hw
*ieee
;
786 /* Boot the device (i.e. upload the firmware) */
787 acxusb_boot(usbdev
, is_tnetw1450
, &radio_type
);
789 /* TNETW1450-based cards will continue right away with
790 * the same USB ID after booting */
792 /* First check if this is the "unbooted" hardware */
793 if (usbdev
->descriptor
.idProduct
== ACX100_PRODUCT_ID_UNBOOTED
) {
795 /* Boot the device (i.e. upload the firmware) */
796 acxusb_boot(usbdev
, is_tnetw1450
, &radio_type
);
798 /* DWL-120+ will first boot the firmware,
799 * then later have a *separate* probe() run
800 * since its USB ID will have changed after
802 * Since the first probe() run has no
803 * other purpose than booting the firmware,
804 * simply return immediately.
807 "finished booting, returning from probe()\n");
808 result
= OK
; /* success */
811 if (usbdev
->descriptor
.idProduct
!= ACX100_PRODUCT_ID_BOOTED
)
812 /* device not unbooted, but invalid USB ID!? */
817 /* Ok, so it's our device and it has already booted */
819 /* Allocate memory for a network device */
821 ieee
= ieee80211_alloc_hw(sizeof(*adev
), &acxusb_hw_ops
);
823 msg
= "acx: no memory for ieee80211_dev\n";
828 ieee
->flags
&= ~IEEE80211_HW_RX_INCLUDES_FCS
;
829 /* TODO: mainline doesn't support the following flags yet */
831 ~IEEE80211_HW_MONITOR_DURING_OPER &
832 ~IEEE80211_HW_WEP_INCLUDE_IV;
836 /* Register the callbacks for the network device functions */
839 /* Setup private driver context */
841 adev
= ieee2adev(ieee
);
844 adev
->dev_type
= DEVTYPE_USB
;
845 adev
->radio_type
= radio_type
;
847 /* well, actually it's a TNETW1450, but since it
848 * seems to be sufficiently similar to TNETW1130,
849 * I don't want to change large amounts of code now */
850 adev
->chip_type
= CHIPTYPE_ACX111
;
852 adev
->chip_type
= CHIPTYPE_ACX100
;
855 adev
->usbdev
= usbdev
;
856 spin_lock_init(&adev
->spinlock
); /* initial state: unlocked */
857 mutex_init(&adev
->mutex
);
859 /* Check that this is really the hardware we know about.
860 ** If not sure, at least notify the user that he
861 ** may be in trouble...
863 numconfigs
= (int)usbdev
->descriptor
.bNumConfigurations
;
865 printk("acx: number of configurations is %d, "
866 "this driver only knows how to handle 1, "
867 "be prepared for surprises\n", numconfigs
);
869 config
= &usbdev
->config
->desc
;
870 numfaces
= config
->bNumInterfaces
;
872 printk("acx: number of interfaces is %d, "
873 "this driver only knows how to handle 1, "
874 "be prepared for surprises\n", numfaces
);
876 ifdesc
= &intf
->altsetting
->desc
;
877 numep
= ifdesc
->bNumEndpoints
;
878 log(L_DEBUG
, "# of endpoints: %d\n", numep
);
884 /* obtain information about the endpoint
885 ** addresses, begin with some default values
889 for (i
= 0; i
< numep
; i
++) {
890 ep
= usbdev
->ep_in
[i
];
894 if (epdesc
->bmAttributes
& USB_ENDPOINT_XFER_BULK
) {
895 if (epdesc
->bEndpointAddress
& 0x80)
897 epdesc
->bEndpointAddress
& 0xF;
900 epdesc
->bEndpointAddress
& 0xF;
904 log(L_DEBUG
, "bulkout ep: 0x%X\n", adev
->bulkoutep
);
905 log(L_DEBUG
, "bulkin ep: 0x%X\n", adev
->bulkinep
);
907 /* already done by memset: adev->rxtruncsize = 0; */
908 log(L_DEBUG
, "TXBUFSIZE=%d RXBUFSIZE=%d\n",
909 (int)TXBUFSIZE
, (int)RXBUFSIZE
);
911 /* Allocate the RX/TX containers. */
912 adev
->usb_tx
= kmalloc(sizeof(usb_tx_t
) * ACX_TX_URB_CNT
, GFP_KERNEL
);
914 msg
= "acx: no memory for tx container";
917 adev
->usb_rx
= kmalloc(sizeof(usb_rx_t
) * ACX_RX_URB_CNT
, GFP_KERNEL
);
919 msg
= "acx: no memory for rx container";
923 /* Setup URBs for bulk-in/out messages */
924 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
925 adev
->usb_rx
[i
].urb
= usb_alloc_urb(0, GFP_KERNEL
);
926 if (!adev
->usb_rx
[i
].urb
) {
927 msg
= "acx: no memory for input URB\n";
930 adev
->usb_rx
[i
].urb
->status
= 0;
931 adev
->usb_rx
[i
].adev
= adev
;
932 adev
->usb_rx
[i
].busy
= 0;
935 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++) {
936 adev
->usb_tx
[i
].urb
= usb_alloc_urb(0, GFP_KERNEL
);
937 if (!adev
->usb_tx
[i
].urb
) {
938 msg
= "acx: no memory for output URB\n";
941 adev
->usb_tx
[i
].urb
->status
= 0;
942 adev
->usb_tx
[i
].adev
= adev
;
943 adev
->usb_tx
[i
].busy
= 0;
945 adev
->tx_free
= ACX_TX_URB_CNT
;
947 usb_set_intfdata(intf
, adev
);
948 SET_IEEE80211_DEV(ieee
, &intf
->dev
);
950 /* TODO: move all of fw cmds to open()? But then we won't know our MAC addr
951 until ifup (it's available via reading ACX1xx_IE_DOT11_STATION_ID)... */
953 /* put acx out of sleep mode and initialize it */
954 acx_s_issue_cmd(adev
, ACX1xx_CMD_WAKE
, NULL
, 0);
956 result
= acx_s_init_mac(adev
);
960 /* TODO: see similar code in pci.c */
961 acxusb_s_read_eeprom_version(adev
);
962 acxusb_s_fill_configoption(adev
);
963 acx_s_set_defaults(adev
);
964 acx_s_get_firmware_version(adev
);
965 acx_display_hardware_details(adev
);
967 /* MAC_COPY(ndev->dev_addr, adev->dev_addr); */
969 /* Register the network device */
970 log(L_INIT
, "registering network device\n");
971 result
= ieee80211_register_hw(adev
->ieee
);
973 msg
= "acx: failed to register USB network device "
978 acx_proc_register_entries(ieee
);
981 printk("acx: USB module " ACX_RELEASE
" loaded successfully\n");
983 acx_init_task_scheduler(adev
);
986 great_inquisitor(adev
);
989 /* Everything went OK, we are happy now */
998 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++)
999 usb_free_urb(adev
->usb_rx
[i
].urb
);
1000 kfree(adev
->usb_rx
);
1003 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++)
1004 usb_free_urb(adev
->usb_tx
[i
].urb
);
1005 kfree(adev
->usb_tx
);
1007 ieee80211_free_hw(ieee
);
1014 /* no device we could handle, return error. */
1023 /***********************************************************************
1024 ** acxusb_e_disconnect()
1026 ** This function is invoked whenever the user pulls the plug from the USB
1027 ** device or the module is removed from the kernel. In these cases, the
1028 ** network devices have to be taken down and all allocated memory has
1031 void acxusb_e_disconnect(struct usb_interface
*intf
)
1033 unsigned long flags
;
1035 acx_device_t
*adev
= usb_get_intfdata(intf
);
1039 /* No WLAN device... no sense */
1043 /* Unregister network device
1045 * If the interface is up, unregister_netdev() will take
1046 * care of calling our close() function, which takes
1047 * care of unlinking the urbs, sending the device to
1049 * This can't be called with sem or lock held because
1050 * _close() will try to grab it as well if it's called,
1051 * deadlocking the machine.
1053 acx_proc_unregister_entries(adev
->ieee
);
1054 ieee80211_unregister_hw(adev
->ieee
);
1057 acx_lock(adev
, flags
);
1058 /* This device exists no more */
1059 usb_set_intfdata(intf
, NULL
);
1062 * Here we only free them. _close() took care of
1065 for (i
= 0; i
< ACX_RX_URB_CNT
; ++i
) {
1066 usb_free_urb(adev
->usb_rx
[i
].urb
);
1068 for (i
= 0; i
< ACX_TX_URB_CNT
; ++i
) {
1069 usb_free_urb(adev
->usb_tx
[i
].urb
);
1072 /* Freeing containers */
1073 kfree(adev
->usb_rx
);
1074 kfree(adev
->usb_tx
);
1076 acx_unlock(adev
, flags
);
1077 acx_sem_unlock(adev
);
1079 ieee80211_free_hw(adev
->ieee
);
1084 /***********************************************************************
1086 ** This function is called when the user sets up the network interface.
1087 ** It initializes a management timer, sets up the USB card and starts
1088 ** the network tx queue and USB receive.
1090 int acxusb_e_open(struct ieee80211_hw
*hw
)
1092 acx_device_t
*adev
= ieee2adev(hw
);
1093 unsigned long flags
;
1100 /* put the ACX100 out of sleep mode */
1101 // acx_s_issue_cmd(adev, ACX1xx_CMD_WAKE, NULL, 0);
1103 init_timer(&adev
->mgmt_timer
);
1104 adev
->mgmt_timer
.function
= acx_i_timer
;
1105 adev
->mgmt_timer
.data
= (unsigned long)adev
;
1107 /* acx_s_start needs it */
1108 SET_BIT(adev
->dev_state_mask
, ACX_STATE_IFACE_UP
);
1111 /* don't acx_start_queue() here, we need to associate first */
1113 acx_lock(adev
, flags
);
1114 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
1115 adev
->usb_rx
[i
].urb
->status
= 0;
1118 acxusb_l_poll_rx(adev
, &adev
->usb_rx
[0]);
1120 acx_setup_modes(adev
);
1121 ieee80211_start_queues(adev
->ieee
);
1122 acx_unlock(adev
, flags
);
1124 acx_sem_unlock(adev
);
1131 /***********************************************************************
1134 ** This function stops the network functionality of the interface (invoked
1135 ** when the user calls ifconfig <wlan> down). The tx queue is halted and
1136 ** the device is marked as down. In case there were any pending USB bulk
1137 ** transfers, these are unlinked (asynchronously). The module in-use count
1138 ** is also decreased in this function.
1140 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
1141 int acxusb_e_close(struct ieee80211_hw
*hw
)
1143 static void acxusb_e_close(struct ieee80211_hw
*hw
)
1146 acx_device_t
*adev
= ieee2adev(hw
);
1147 unsigned long flags
;
1153 if (adev
->dev_state_mask
& ACX_STATE_IFACE_UP
)
1155 // acxusb_e_down(adev);
1156 CLEAR_BIT(adev
->dev_state_mask
, ACX_STATE_IFACE_UP
);
1159 /* Code below is remarkably similar to acxpci_s_down(). Maybe we can merge them? */
1161 acx_free_modes(adev
);
1163 /* Make sure we don't get any more rx requests */
1164 acx_s_issue_cmd(adev
, ACX1xx_CMD_DISABLE_RX
, NULL
, 0);
1165 acx_s_issue_cmd(adev
, ACX1xx_CMD_DISABLE_TX
, NULL
, 0);
1168 * We must do FLUSH *without* holding sem to avoid a deadlock.
1169 * See pci.c:acxpci_s_down() for deails.
1171 acx_sem_unlock(adev
);
1172 flush_scheduled_work();
1175 /* Power down the device */
1176 acx_s_issue_cmd(adev
, ACX1xx_CMD_SLEEP
, NULL
, 0);
1178 /* Stop the transmit queue, mark the device as DOWN */
1179 acx_lock(adev
, flags
);
1180 // acx_stop_queue(ndev, "on ifdown");
1181 // acx_set_status(adev, ACX_STATUS_0_STOPPED);
1182 /* stop pending rx/tx urb transfers */
1183 for (i
= 0; i
< ACX_TX_URB_CNT
; i
++) {
1184 acxusb_unlink_urb(adev
->usb_tx
[i
].urb
);
1185 adev
->usb_tx
[i
].busy
= 0;
1187 for (i
= 0; i
< ACX_RX_URB_CNT
; i
++) {
1188 acxusb_unlink_urb(adev
->usb_rx
[i
].urb
);
1189 adev
->usb_rx
[i
].busy
= 0;
1191 adev
->tx_free
= ACX_TX_URB_CNT
;
1192 acx_unlock(adev
, flags
);
1194 /* Must do this outside of lock */
1195 del_timer_sync(&adev
->mgmt_timer
);
1197 acx_sem_unlock(adev
);
1200 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
1206 /***********************************************************************
1208 ** This function (re)initiates a bulk-in USB transfer on a given urb
1210 void acxusb_l_poll_rx(acx_device_t
* adev
, usb_rx_t
* rx
)
1212 struct usb_device
*usbdev
;
1215 unsigned int inpipe
;
1220 usbdev
= adev
->usbdev
;
1222 rxnum
= rx
- adev
->usb_rx
;
1224 inpipe
= usb_rcvbulkpipe(usbdev
, adev
->bulkinep
);
1225 if (unlikely(rxurb
->status
== -EINPROGRESS
)) {
1227 "acx: error, rx triggered while rx urb in progress\n");
1228 /* FIXME: this is nasty, receive is being cancelled by this code
1229 * on the other hand, this should not happen anyway...
1231 usb_unlink_urb(rxurb
);
1232 } else if (unlikely(rxurb
->status
== -ECONNRESET
)) {
1233 log(L_USBRXTX
, "acx_usb: _poll_rx: connection reset\n");
1236 rxurb
->actual_length
= 0;
1237 usb_fill_bulk_urb(rxurb
, usbdev
, inpipe
, &rx
->bulkin
, /* dataptr */
1238 RXBUFSIZE
, /* size */
1239 acxusb_i_complete_rx
, /* handler */
1240 rx
/* handler param */
1242 rxurb
->transfer_flags
= URB_ASYNC_UNLINK
;
1244 /* ATOMIC: we may be called from complete_rx() usb callback */
1245 errcode
= usb_submit_urb(rxurb
, GFP_ATOMIC
);
1246 /* FIXME: evaluate the error code! */
1247 log(L_USBRXTX
, "SUBMIT RX (%d) inpipe=0x%X size=%d errcode=%d\n",
1248 rxnum
, inpipe
, (int)RXBUFSIZE
, errcode
);
1254 /***********************************************************************
1255 ** acxusb_i_complete_rx()
1257 ** urb -> pointer to USB request block
1258 ** regs -> pointer to register-buffer for syscalls (see asm/ptrace.h)
1260 ** This function is invoked by USB subsystem whenever a bulk receive
1262 ** The received data is then committed to the network stack and the next
1263 ** USB receive is triggered.
1265 void acxusb_i_complete_rx(struct urb
*urb
)
1271 unsigned long flags
;
1272 int size
, remsize
, packetsize
, rxnum
;
1276 BUG_ON(!urb
->context
);
1278 rx
= (usb_rx_t
*) urb
->context
;
1281 acx_lock(adev
, flags
);
1284 * Happens on disconnect or close. Don't play with the urb.
1285 * Don't resubmit it. It will get unlinked by close()
1287 if (unlikely(!(adev
->dev_state_mask
& ACX_STATE_IFACE_UP
))) {
1288 log(L_USBRXTX
, "rx: device is down, not doing anything\n");
1292 inbuf
= &rx
->bulkin
;
1293 size
= urb
->actual_length
;
1295 rxnum
= rx
- adev
->usb_rx
;
1297 log(L_USBRXTX
, "RETURN RX (%d) status=%d size=%d\n",
1298 rxnum
, urb
->status
, size
);
1300 /* Send the URB that's waiting. */
1301 log(L_USBRXTX
, "rxnum=%d, sending=%d\n", rxnum
, rxnum
^ 1);
1302 acxusb_l_poll_rx(adev
, &adev
->usb_rx
[rxnum
^ 1]);
1304 if (unlikely(size
> sizeof(rxbuffer_t
)))
1305 printk("acx_usb: rx too large: %d, please report\n", size
);
1307 /* check if the transfer was aborted */
1308 switch (urb
->status
) {
1309 case 0: /* No error */
1312 printk(KERN_ERR
"acx: rx data overrun\n");
1313 adev
->rxtruncsize
= 0; /* Not valid anymore. */
1316 adev
->rxtruncsize
= 0;
1318 case -ESHUTDOWN
: /* rmmod */
1319 adev
->rxtruncsize
= 0;
1322 adev
->rxtruncsize
= 0;
1323 adev
->stats
.rx_errors
++;
1324 printk("acx: rx error (urb status=%d)\n", urb
->status
);
1328 if (unlikely(!size
))
1329 printk("acx: warning, encountered zerolength rx packet\n");
1331 if (urb
->transfer_buffer
!= inbuf
)
1334 /* check if previous frame was truncated
1335 ** FIXME: this code can only handle truncation
1336 ** of consecutive packets!
1339 if (adev
->rxtruncsize
) {
1342 ptr
= &adev
->rxtruncbuf
;
1343 packetsize
= RXBUF_BYTES_USED(ptr
);
1344 if (acx_debug
& L_USBRXTX
) {
1345 printk("handling truncated frame (truncsize=%d size=%d "
1346 "packetsize(from trunc)=%d)\n",
1347 adev
->rxtruncsize
, size
, packetsize
);
1348 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1349 acx_dump_bytes(inbuf
, RXBUF_HDRSIZE
);
1352 /* bytes needed for rxtruncbuf completion: */
1353 tail_size
= packetsize
- adev
->rxtruncsize
;
1355 if (size
< tail_size
) {
1356 /* there is not enough data to complete this packet,
1357 ** simply append the stuff to the truncation buffer
1359 memcpy(((char *)ptr
) + adev
->rxtruncsize
, inbuf
, size
);
1360 adev
->rxtruncsize
+= size
;
1363 /* ok, this data completes the previously
1364 ** truncated packet. copy it into a descriptor
1365 ** and give it to the rest of the stack */
1367 /* append tail to previously truncated part
1368 ** NB: adev->rxtruncbuf (pointed to by ptr) can't
1369 ** overflow because this is already checked before
1370 ** truncation buffer was filled. See below,
1371 ** "if (packetsize > sizeof(rxbuffer_t))..." code */
1372 memcpy(((char *)ptr
) + adev
->rxtruncsize
, inbuf
,
1375 if (acx_debug
& L_USBRXTX
) {
1376 printk("full trailing packet + 12 bytes:\n");
1377 acx_dump_bytes(inbuf
,
1378 tail_size
+ RXBUF_HDRSIZE
);
1380 acx_l_process_rxbuf(adev
, ptr
);
1381 adev
->rxtruncsize
= 0;
1382 ptr
= (rxbuffer_t
*) (((char *)inbuf
) + tail_size
);
1383 remsize
-= tail_size
;
1385 log(L_USBRXTX
, "post-merge size=%d remsize=%d\n",
1389 /* size = USB data block size
1390 ** remsize = unprocessed USB bytes left
1391 ** ptr = current pos in USB data block
1394 if (remsize
< RXBUF_HDRSIZE
) {
1395 printk("acx: truncated rx header (%d bytes)!\n",
1398 acx_dump_bytes(ptr
, remsize
);
1402 packetsize
= RXBUF_BYTES_USED(ptr
);
1403 log(L_USBRXTX
, "packet with packetsize=%d\n", packetsize
);
1405 if (RXBUF_IS_TXSTAT(ptr
)) {
1406 /* do rate handling */
1407 usb_txstatus_t
*stat
= (void *)ptr
;
1409 log(L_USBRXTX
, "tx: stat: mac_cnt_rcvd:%04X "
1410 "queue_index:%02X mac_status:%02X hostdata:%08X "
1411 "rate:%u ack_failures:%02X rts_failures:%02X "
1414 stat
->queue_index
, stat
->mac_status
, stat
->hostdata
,
1415 stat
->rate
, stat
->ack_failures
, stat
->rts_failures
,
1418 if (adev->rate_auto && client_no < VEC_SIZE(adev->sta_list)) {
1419 client_t *clt = &adev->sta_list[client_no];
1420 u16 cur = stat->hostdata >> 16;
1422 if (clt && clt->rate_cur == cur) {
1423 acx_l_handle_txrate_auto(adev, clt,
1424 cur, // intended rate
1425 stat->rate, 0, // actually used rate
1426 stat->mac_status, // error?
1427 ACX_TX_URB_CNT - adev->tx_free);
1433 if (packetsize
> sizeof(rxbuffer_t
)) {
1434 printk("acx: packet exceeds max wlan "
1435 "frame size (%d > %d). size=%d\n",
1436 packetsize
, (int)sizeof(rxbuffer_t
), size
);
1438 acx_dump_bytes(ptr
, 16);
1439 /* FIXME: put some real error-handling in here! */
1443 if (packetsize
> remsize
) {
1444 /* frame truncation handling */
1445 if (acx_debug
& L_USBRXTX
) {
1446 printk("need to truncate packet, "
1447 "packetsize=%d remsize=%d "
1449 packetsize
, remsize
, size
);
1450 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1452 memcpy(&adev
->rxtruncbuf
, ptr
, remsize
);
1453 adev
->rxtruncsize
= remsize
;
1457 /* packetsize <= remsize */
1458 /* now handle the received data */
1459 acx_l_process_rxbuf(adev
, ptr
);
1461 ptr
= (rxbuffer_t
*) (((char *)ptr
) + packetsize
);
1462 remsize
-= packetsize
;
1463 if ((acx_debug
& L_USBRXTX
) && remsize
) {
1464 printk("more than one packet in buffer, "
1465 "second packet hdr:");
1466 acx_dump_bytes(ptr
, RXBUF_HDRSIZE
);
1471 acx_unlock(adev
, flags
);
1477 /***********************************************************************
1478 ** acxusb_i_complete_tx()
1480 ** urb -> pointer to USB request block
1481 ** regs -> pointer to register-buffer for syscalls (see asm/ptrace.h)
1483 ** This function is invoked upon termination of a USB transfer.
1485 void acxusb_i_complete_tx(struct urb
*urb
)
1489 unsigned long flags
;
1494 BUG_ON(!urb
->context
);
1496 tx
= (usb_tx_t
*) urb
->context
;
1499 txnum
= tx
- adev
->usb_tx
;
1501 acx_lock(adev
, flags
);
1504 * If the iface isn't up, we don't have any right
1505 * to play with them. The urb may get unlinked.
1507 if (unlikely(!(adev
->dev_state_mask
& ACX_STATE_IFACE_UP
))) {
1508 log(L_USBRXTX
, "tx: device is down, not doing anything\n");
1512 log(L_USBRXTX
, "RETURN TX (%d): status=%d size=%d\n",
1513 txnum
, urb
->status
, urb
->actual_length
);
1515 /* handle USB transfer errors */
1516 switch (urb
->status
) {
1517 case 0: /* No error */
1525 /* FIXME: real error-handling code here please */
1527 printk(KERN_ERR
"acx: tx error, urb status=%d\n", urb
->status
);
1528 /* FIXME: real error-handling code here please */
1531 /* free the URB and check for more data */
1534 if ((adev
->tx_free
>= TX_START_QUEUE
)
1535 && (adev
->status
== ACX_STATUS_4_ASSOCIATED
)
1536 /* && (acx_queue_stopped(adev->ndev)*/) {
1537 log(L_BUF
, "tx: wake queue (%u free txbufs)\n", adev
->tx_free
);
1538 /* acx_wake_queue(adev->ndev, NULL); */
1542 acx_unlock(adev
, flags
);
1548 /***************************************************************
1549 ** acxusb_l_alloc_tx
1550 ** Actually returns a usb_tx_t* ptr
1552 tx_t
*acxusb_l_alloc_tx(acx_device_t
* adev
)
1559 head
= adev
->tx_head
;
1561 head
= (head
+ 1) % ACX_TX_URB_CNT
;
1562 if (!adev
->usb_tx
[head
].busy
) {
1563 log(L_USBRXTX
, "allocated tx %d\n", head
);
1564 tx
= &adev
->usb_tx
[head
];
1567 /* Keep a few free descs between head and tail of tx ring.
1568 ** It is not absolutely needed, just feels safer */
1569 if (adev
->tx_free
< TX_STOP_QUEUE
) {
1570 log(L_BUF
, "tx: stop queue "
1571 "(%u free txbufs)\n", adev
->tx_free
);
1572 /* acx_stop_queue(adev->ndev, NULL); */
1576 } while (likely(head
!= adev
->tx_head
));
1578 printk_ratelimited("acx: tx buffers full\n");
1580 adev
->tx_head
= head
;
1586 /***************************************************************
1587 ** Used if alloc_tx()'ed buffer needs to be cancelled without doing tx
1589 void acxusb_l_dealloc_tx(tx_t
* tx_opaque
)
1591 usb_tx_t
*tx
= (usb_tx_t
*) tx_opaque
;
1596 /***************************************************************
1598 void *acxusb_l_get_txbuf(acx_device_t
* adev
, tx_t
* tx_opaque
)
1600 usb_tx_t
*tx
= (usb_tx_t
*) tx_opaque
;
1601 return &tx
->bulkout
.data
;
1605 /***************************************************************
1608 ** Can be called from IRQ (rx -> (AP bridging or mgmt response) -> tx).
1609 ** Can be called from acx_i_start_xmit (data frames from net core).
1611 void acxusb_l_tx_data(acx_device_t
* adev
, tx_t
* tx_opaque
, int wlanpkt_len
, struct ieee80211_tx_control
*ctl
,
1612 struct sk_buff
* skb
)
1614 struct usb_device
*usbdev
;
1617 usb_txbuffer_t
*txbuf
;
1619 struct ieee80211_hdr
*whdr
;
1620 unsigned int outpipe
;
1625 tx
= ((usb_tx_t
*) tx_opaque
);
1627 txbuf
= &tx
->bulkout
;
1628 whdr
= (struct ieee80211_hdr
*) txbuf
->data
;
1629 txnum
= tx
- adev
->usb_tx
;
1631 log(L_DEBUG
, "using buf#%d free=%d len=%d\n",
1632 txnum
, adev
->tx_free
, wlanpkt_len
);
1634 switch (adev->mode) {
1635 case ACX_MODE_0_ADHOC:
1637 clt = acx_l_sta_list_get(adev, whdr->a1);
1639 case ACX_MODE_2_STA:
1640 // clt = adev->ap_client;
1646 if (unlikely(clt && !clt->rate_cur)) {
1647 printk("acx: driver bug! bad ratemask\n");
1652 /* fill the USB transfer header */
1653 txbuf
->desc
= cpu_to_le16(USB_TXBUF_TXDESC
);
1654 txbuf
->mpdu_len
= cpu_to_le16(wlanpkt_len
);
1655 txbuf
->queue_index
= 1;
1656 txbuf
->rate
= ctl
->tx_rate
; //clt->rate_100;
1657 // FIXME(); //This used to have | (clt - adev->ap_client)
1658 txbuf
->hostdata
= (ctl
->tx_rate
<< 16);
1659 txbuf
->ctrl1
= DESC_CTL_FIRSTFRAG
;
1660 if (1 == adev
->preamble_cur
)
1661 SET_BIT(txbuf
->ctrl1
, DESC_CTL_SHORT_PREAMBLE
);
1663 txbuf
->data_len
= cpu_to_le16(wlanpkt_len
);
1665 if (unlikely(acx_debug
& L_DATA
)) {
1666 printk("dump of bulk out urb:\n");
1667 acx_dump_bytes(txbuf
, wlanpkt_len
+ USB_TXBUF_HDRSIZE
);
1670 if (unlikely(txurb
->status
== -EINPROGRESS
)) {
1672 ("acx: trying to submit tx urb while already in progress\n");
1675 /* now schedule the USB transfer */
1676 usbdev
= adev
->usbdev
;
1677 outpipe
= usb_sndbulkpipe(usbdev
, adev
->bulkoutep
);
1679 usb_fill_bulk_urb(txurb
, usbdev
, outpipe
, txbuf
, /* dataptr */
1680 wlanpkt_len
+ USB_TXBUF_HDRSIZE
, /* size */
1681 acxusb_i_complete_tx
, /* handler */
1682 tx
/* handler param */
1685 txurb
->transfer_flags
= URB_ASYNC_UNLINK
| URB_ZERO_PACKET
;
1686 ucode
= usb_submit_urb(txurb
, GFP_ATOMIC
);
1687 log(L_USBRXTX
, "SUBMIT TX (%d): outpipe=0x%X buf=%p txsize=%d "
1688 "rate=%u errcode=%d\n", txnum
, outpipe
, txbuf
,
1689 wlanpkt_len
+ USB_TXBUF_HDRSIZE
, txbuf
->rate
, ucode
);
1691 if (unlikely(ucode
)) {
1692 printk(KERN_ERR
"acx: submit_urb() error=%d txsize=%d\n",
1693 ucode
, wlanpkt_len
+ USB_TXBUF_HDRSIZE
);
1695 /* on error, just mark the frame as done and update
1698 adev
->stats
.tx_errors
++;
1701 /* needed? if (adev->tx_free > TX_START_QUEUE) acx_wake_queue(...) */
1707 /***********************************************************************
1708 static void acxusb_i_set_rx_mode(struct net_device *ndev)
1714 /***********************************************************************
1716 #ifdef HAVE_TX_TIMEOUT
1718 void acxusb_i_tx_timeout(struct net_device *ndev)
1720 acx_device_t *adev = ndev2adev(ndev);
1721 unsigned long flags;
1726 acx_lock(adev, flags);
1727 */ /* unlink the URBs */
1728 /* for (i = 0; i < ACX_TX_URB_CNT; i++) {
1729 acxusb_unlink_urb(adev->usb_tx[i].urb);
1730 adev->usb_tx[i].busy = 0;
1732 adev->tx_free = ACX_TX_URB_CNT;
1733 */ /* TODO: stats update */
1734 /* acx_unlock(adev, flags);
1742 /***********************************************************************
1745 ** This function is invoked upon loading of the kernel module.
1746 ** It registers itself at the kernel's USB subsystem.
1748 ** Returns: Errorcode on failure, 0 on success
1750 int __init
acxusb_e_init_module(void)
1752 log(L_INIT
, "USB module " ACX_RELEASE
" initialized, "
1753 "probing for devices...\n");
1754 return usb_register(&acxusb_driver
);
1759 /***********************************************************************
1762 ** This function is invoked as last step of the module unloading. It simply
1763 ** deregisters this module at the kernel's USB subsystem.
1765 void __exit
acxusb_e_cleanup_module(void)
1767 usb_deregister(&acxusb_driver
);
1768 log(L_INIT
, "USB module " ACX_RELEASE
" unloaded\n");
1772 /***********************************************************************
1778 static void dump_device(struct usb_device
*usbdev
)
1781 struct usb_config_descriptor
*cd
;
1783 printk("acx device dump:\n");
1784 printk(" devnum: %d\n", usbdev
->devnum
);
1785 printk(" speed: %d\n", usbdev
->speed
);
1786 printk(" tt: 0x%X\n", (unsigned int)(usbdev
->tt
));
1787 printk(" ttport: %d\n", (unsigned int)(usbdev
->ttport
));
1788 printk(" toggle[0]: 0x%X toggle[1]: 0x%X\n",
1789 (unsigned int)(usbdev
->toggle
[0]),
1790 (unsigned int)(usbdev
->toggle
[1]));
1791 /* This saw a change after 2.6.10 */
1792 printk(" ep_in wMaxPacketSize: ");
1793 for (i
= 0; i
< 16; ++i
)
1794 if (usbdev
->ep_in
[i
] != NULL
)
1796 usbdev
->ep_in
[i
]->desc
.wMaxPacketSize
);
1798 printk(" ep_out wMaxPacketSize: ");
1799 for (i
= 0; i
< ARRAY_SIZE(usbdev
->ep_out
); ++i
)
1800 if (usbdev
->ep_out
[i
] != NULL
)
1802 usbdev
->ep_out
[i
]->desc
.wMaxPacketSize
);
1804 printk(" parent: 0x%X\n", (unsigned int)usbdev
->parent
);
1805 printk(" bus: 0x%X\n", (unsigned int)usbdev
->bus
);
1807 printk(" configs: ");
1808 for (i
= 0; i
< usbdev
->descriptor
.bNumConfigurations
; i
++)
1809 printk("0x%X ", usbdev
->config
[i
]);
1812 printk(" actconfig: %p\n", usbdev
->actconfig
);
1813 dump_device_descriptor(&usbdev
->descriptor
);
1815 cd
= &usbdev
->config
->desc
;
1816 dump_config_descriptor(cd
);
1820 /***********************************************************************
1822 static void dump_config_descriptor(struct usb_config_descriptor
*cd
)
1824 printk("Configuration Descriptor:\n");
1829 printk(" bLength: %d (0x%X)\n", cd
->bLength
, cd
->bLength
);
1830 printk(" bDescriptorType: %d (0x%X)\n", cd
->bDescriptorType
,
1831 cd
->bDescriptorType
);
1832 printk(" bNumInterfaces: %d (0x%X)\n", cd
->bNumInterfaces
,
1833 cd
->bNumInterfaces
);
1834 printk(" bConfigurationValue: %d (0x%X)\n", cd
->bConfigurationValue
,
1835 cd
->bConfigurationValue
);
1836 printk(" iConfiguration: %d (0x%X)\n", cd
->iConfiguration
,
1837 cd
->iConfiguration
);
1838 printk(" bmAttributes: %d (0x%X)\n", cd
->bmAttributes
,
1840 /* printk(" MaxPower: %d (0x%X)\n", cd->bMaxPower, cd->bMaxPower); */
1844 static void dump_device_descriptor(struct usb_device_descriptor
*dd
)
1846 printk("Device Descriptor:\n");
1851 printk(" bLength: %d (0x%X)\n", dd
->bLength
, dd
->bLength
);
1852 printk(" bDescriptortype: %d (0x%X)\n", dd
->bDescriptorType
,
1853 dd
->bDescriptorType
);
1854 printk(" bcdUSB: %d (0x%X)\n", dd
->bcdUSB
, dd
->bcdUSB
);
1855 printk(" bDeviceClass: %d (0x%X)\n", dd
->bDeviceClass
,
1857 printk(" bDeviceSubClass: %d (0x%X)\n", dd
->bDeviceSubClass
,
1858 dd
->bDeviceSubClass
);
1859 printk(" bDeviceProtocol: %d (0x%X)\n", dd
->bDeviceProtocol
,
1860 dd
->bDeviceProtocol
);
1861 printk(" bMaxPacketSize0: %d (0x%X)\n", dd
->bMaxPacketSize0
,
1862 dd
->bMaxPacketSize0
);
1863 printk(" idVendor: %d (0x%X)\n", dd
->idVendor
, dd
->idVendor
);
1864 printk(" idProduct: %d (0x%X)\n", dd
->idProduct
, dd
->idProduct
);
1865 printk(" bcdDevice: %d (0x%X)\n", dd
->bcdDevice
, dd
->bcdDevice
);
1866 printk(" iManufacturer: %d (0x%X)\n", dd
->iManufacturer
,
1868 printk(" iProduct: %d (0x%X)\n", dd
->iProduct
, dd
->iProduct
);
1869 printk(" iSerialNumber: %d (0x%X)\n", dd
->iSerialNumber
,
1871 printk(" bNumConfigurations: %d (0x%X)\n", dd
->bNumConfigurations
,
1872 dd
->bNumConfigurations
);
1876 #endif /* ACX_DEBUG */