3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/module.h>
21 #include <linux/firmware.h>
22 #include <linux/device.h>
23 #include <linux/errno.h>
24 #include <linux/skbuff.h>
25 #include <linux/usb.h>
26 #include <linux/workqueue.h>
27 #include <net/ieee80211.h>
28 #include <asm/unaligned.h>
31 #include "zd_netdev.h"
36 static struct usb_device_id usb_ids[] = {
38 { USB_DEVICE(0x0ace, 0x1211), .driver_info = DEVICE_ZD1211 },
39 { USB_DEVICE(0x07b8, 0x6001), .driver_info = DEVICE_ZD1211 },
40 { USB_DEVICE(0x126f, 0xa006), .driver_info = DEVICE_ZD1211 },
41 { USB_DEVICE(0x6891, 0xa727), .driver_info = DEVICE_ZD1211 },
42 { USB_DEVICE(0x0df6, 0x9071), .driver_info = DEVICE_ZD1211 },
43 { USB_DEVICE(0x0df6, 0x9075), .driver_info = DEVICE_ZD1211 },
44 { USB_DEVICE(0x157e, 0x300b), .driver_info = DEVICE_ZD1211 },
45 { USB_DEVICE(0x079b, 0x004a), .driver_info = DEVICE_ZD1211 },
46 { USB_DEVICE(0x1740, 0x2000), .driver_info = DEVICE_ZD1211 },
47 { USB_DEVICE(0x157e, 0x3204), .driver_info = DEVICE_ZD1211 },
48 { USB_DEVICE(0x0586, 0x3402), .driver_info = DEVICE_ZD1211 },
49 { USB_DEVICE(0x0b3b, 0x5630), .driver_info = DEVICE_ZD1211 },
50 { USB_DEVICE(0x0b05, 0x170c), .driver_info = DEVICE_ZD1211 },
51 { USB_DEVICE(0x1435, 0x0711), .driver_info = DEVICE_ZD1211 },
52 { USB_DEVICE(0x0586, 0x3409), .driver_info = DEVICE_ZD1211 },
53 { USB_DEVICE(0x0b3b, 0x1630), .driver_info = DEVICE_ZD1211 },
54 { USB_DEVICE(0x0586, 0x3401), .driver_info = DEVICE_ZD1211 },
55 { USB_DEVICE(0x14ea, 0xab13), .driver_info = DEVICE_ZD1211 },
56 { USB_DEVICE(0x13b1, 0x001e), .driver_info = DEVICE_ZD1211 },
57 { USB_DEVICE(0x0586, 0x3407), .driver_info = DEVICE_ZD1211 },
59 { USB_DEVICE(0x0ace, 0x1215), .driver_info = DEVICE_ZD1211B },
60 { USB_DEVICE(0x157e, 0x300d), .driver_info = DEVICE_ZD1211B },
61 { USB_DEVICE(0x079b, 0x0062), .driver_info = DEVICE_ZD1211B },
62 { USB_DEVICE(0x1582, 0x6003), .driver_info = DEVICE_ZD1211B },
63 { USB_DEVICE(0x050d, 0x705c), .driver_info = DEVICE_ZD1211B },
64 { USB_DEVICE(0x083a, 0x4505), .driver_info = DEVICE_ZD1211B },
65 { USB_DEVICE(0x0471, 0x1236), .driver_info = DEVICE_ZD1211B },
66 { USB_DEVICE(0x13b1, 0x0024), .driver_info = DEVICE_ZD1211B },
67 { USB_DEVICE(0x0586, 0x340f), .driver_info = DEVICE_ZD1211B },
68 { USB_DEVICE(0x0b05, 0x171b), .driver_info = DEVICE_ZD1211B },
69 { USB_DEVICE(0x0586, 0x3410), .driver_info = DEVICE_ZD1211B },
70 { USB_DEVICE(0x0baf, 0x0121), .driver_info = DEVICE_ZD1211B },
71 { USB_DEVICE(0x0586, 0x3412), .driver_info = DEVICE_ZD1211B },
72 { USB_DEVICE(0x0586, 0x3413), .driver_info = DEVICE_ZD1211B },
73 { USB_DEVICE(0x0053, 0x5301), .driver_info = DEVICE_ZD1211B },
74 { USB_DEVICE(0x0411, 0x00da), .driver_info = DEVICE_ZD1211B },
75 { USB_DEVICE(0x2019, 0x5303), .driver_info = DEVICE_ZD1211B },
76 /* "Driverless" devices that need ejecting */
77 { USB_DEVICE(0x0ace, 0x2011), .driver_info = DEVICE_INSTALLER },
78 { USB_DEVICE(0x0ace, 0x20ff), .driver_info = DEVICE_INSTALLER },
82 MODULE_LICENSE("GPL");
83 MODULE_DESCRIPTION("USB driver for devices with the ZD1211 chip.");
84 MODULE_AUTHOR("Ulrich Kunitz");
85 MODULE_AUTHOR("Daniel Drake");
86 MODULE_VERSION("1.0");
87 MODULE_DEVICE_TABLE(usb, usb_ids);
89 #define FW_ZD1211_PREFIX "zd1211/zd1211_"
90 #define FW_ZD1211B_PREFIX "zd1211/zd1211b_"
92 /* USB device initialization */
94 static int request_fw_file(
95 const struct firmware **fw, const char *name, struct device *device)
99 dev_dbg_f(device, "fw name %s\n", name);
101 r = request_firmware(fw, name, device);
104 "Could not load firmware file %s. Error number %d\n",
109 static inline u16 get_bcdDevice(const struct usb_device *udev)
111 return le16_to_cpu(udev->descriptor.bcdDevice);
114 enum upload_code_flags {
118 /* Ensures that MAX_TRANSFER_SIZE is even. */
119 #define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
121 static int upload_code(struct usb_device *udev,
122 const u8 *data, size_t size, u16 code_offset, int flags)
127 /* USB request blocks need "kmalloced" buffers.
129 p = kmalloc(MAX_TRANSFER_SIZE, GFP_KERNEL);
131 dev_err(&udev->dev, "out of memory\n");
138 size_t transfer_size = size <= MAX_TRANSFER_SIZE ?
139 size : MAX_TRANSFER_SIZE;
141 dev_dbg_f(&udev->dev, "transfer size %zu\n", transfer_size);
143 memcpy(p, data, transfer_size);
144 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
145 USB_REQ_FIRMWARE_DOWNLOAD,
146 USB_DIR_OUT | USB_TYPE_VENDOR,
147 code_offset, 0, p, transfer_size, 1000 /* ms */);
150 "USB control request for firmware upload"
151 " failed. Error number %d\n", r);
154 transfer_size = r & ~1;
156 size -= transfer_size;
157 data += transfer_size;
158 code_offset += transfer_size/sizeof(u16);
161 if (flags & REBOOT) {
164 r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
165 USB_REQ_FIRMWARE_CONFIRM,
166 USB_DIR_IN | USB_TYPE_VENDOR,
167 0, 0, &ret, sizeof(ret), 5000 /* ms */);
168 if (r != sizeof(ret)) {
170 "control request firmeware confirmation failed."
171 " Return value %d\n", r);
178 "Internal error while downloading."
179 " Firmware confirm return value %#04x\n",
184 dev_dbg_f(&udev->dev, "firmware confirm return value %#04x\n",
194 static u16 get_word(const void *data, u16 offset)
196 const __le16 *p = data;
197 return le16_to_cpu(p[offset]);
200 static char *get_fw_name(struct zd_usb *usb, char *buffer, size_t size,
203 scnprintf(buffer, size, "%s%s",
205 FW_ZD1211B_PREFIX : FW_ZD1211_PREFIX,
210 static int handle_version_mismatch(struct zd_usb *usb,
211 const struct firmware *ub_fw)
213 struct usb_device *udev = zd_usb_to_usbdev(usb);
214 const struct firmware *ur_fw = NULL;
219 r = request_fw_file(&ur_fw,
220 get_fw_name(usb, fw_name, sizeof(fw_name), "ur"),
225 r = upload_code(udev, ur_fw->data, ur_fw->size, FW_START, REBOOT);
229 offset = (E2P_BOOT_CODE_OFFSET * sizeof(u16));
230 r = upload_code(udev, ub_fw->data + offset, ub_fw->size - offset,
231 E2P_START + E2P_BOOT_CODE_OFFSET, REBOOT);
233 /* At this point, the vendor driver downloads the whole firmware
234 * image, hacks around with version IDs, and uploads it again,
235 * completely overwriting the boot code. We do not do this here as
236 * it is not required on any tested devices, and it is suspected to
239 release_firmware(ur_fw);
243 static int upload_firmware(struct zd_usb *usb)
248 struct usb_device *udev = zd_usb_to_usbdev(usb);
249 const struct firmware *ub_fw = NULL;
250 const struct firmware *uph_fw = NULL;
253 bcdDevice = get_bcdDevice(udev);
255 r = request_fw_file(&ub_fw,
256 get_fw_name(usb, fw_name, sizeof(fw_name), "ub"),
261 fw_bcdDevice = get_word(ub_fw->data, E2P_DATA_OFFSET);
263 if (fw_bcdDevice != bcdDevice) {
265 "firmware version %#06x and device bootcode version "
266 "%#06x differ\n", fw_bcdDevice, bcdDevice);
267 if (bcdDevice <= 0x4313)
268 dev_warn(&udev->dev, "device has old bootcode, please "
269 "report success or failure\n");
271 r = handle_version_mismatch(usb, ub_fw);
275 dev_dbg_f(&udev->dev,
276 "firmware device id %#06x is equal to the "
277 "actual device id\n", fw_bcdDevice);
281 r = request_fw_file(&uph_fw,
282 get_fw_name(usb, fw_name, sizeof(fw_name), "uphr"),
287 r = upload_code(udev, uph_fw->data, uph_fw->size, FW_START, REBOOT);
290 "Could not upload firmware code uph. Error number %d\n",
296 release_firmware(ub_fw);
297 release_firmware(uph_fw);
301 /* Read data from device address space using "firmware interface" which does
302 * not require firmware to be loaded. */
303 int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len)
306 struct usb_device *udev = zd_usb_to_usbdev(usb);
308 r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
309 USB_REQ_FIRMWARE_READ_DATA, USB_DIR_IN | 0x40, addr, 0,
313 "read over firmware interface failed: %d\n", r);
315 } else if (r != len) {
317 "incomplete read over firmware interface: %d/%d\n",
325 #define urb_dev(urb) (&(urb)->dev->dev)
327 static inline void handle_regs_int(struct urb *urb)
329 struct zd_usb *usb = urb->context;
330 struct zd_usb_interrupt *intr = &usb->intr;
333 ZD_ASSERT(in_interrupt());
334 spin_lock(&intr->lock);
336 if (intr->read_regs_enabled) {
337 intr->read_regs.length = len = urb->actual_length;
339 if (len > sizeof(intr->read_regs.buffer))
340 len = sizeof(intr->read_regs.buffer);
341 memcpy(intr->read_regs.buffer, urb->transfer_buffer, len);
342 intr->read_regs_enabled = 0;
343 complete(&intr->read_regs.completion);
347 dev_dbg_f(urb_dev(urb), "regs interrupt ignored\n");
349 spin_unlock(&intr->lock);
352 static inline void handle_retry_failed_int(struct urb *urb)
354 struct zd_usb *usb = urb->context;
355 struct zd_mac *mac = zd_usb_to_mac(usb);
356 struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
358 ieee->stats.tx_errors++;
359 ieee->ieee_stats.tx_retry_limit_exceeded++;
360 dev_dbg_f(urb_dev(urb), "retry failed interrupt\n");
364 static void int_urb_complete(struct urb *urb)
367 struct usb_int_header *hdr;
369 switch (urb->status) {
383 if (urb->actual_length < sizeof(hdr)) {
384 dev_dbg_f(urb_dev(urb), "error: urb %p to small\n", urb);
388 hdr = urb->transfer_buffer;
389 if (hdr->type != USB_INT_TYPE) {
390 dev_dbg_f(urb_dev(urb), "error: urb %p wrong type\n", urb);
395 case USB_INT_ID_REGS:
396 handle_regs_int(urb);
398 case USB_INT_ID_RETRY_FAILED:
399 handle_retry_failed_int(urb);
402 dev_dbg_f(urb_dev(urb), "error: urb %p unknown id %x\n", urb,
403 (unsigned int)hdr->id);
408 r = usb_submit_urb(urb, GFP_ATOMIC);
410 dev_dbg_f(urb_dev(urb), "resubmit urb %p\n", urb);
415 kfree(urb->transfer_buffer);
418 static inline int int_urb_interval(struct usb_device *udev)
420 switch (udev->speed) {
431 static inline int usb_int_enabled(struct zd_usb *usb)
434 struct zd_usb_interrupt *intr = &usb->intr;
437 spin_lock_irqsave(&intr->lock, flags);
439 spin_unlock_irqrestore(&intr->lock, flags);
443 int zd_usb_enable_int(struct zd_usb *usb)
446 struct usb_device *udev;
447 struct zd_usb_interrupt *intr = &usb->intr;
448 void *transfer_buffer = NULL;
451 dev_dbg_f(zd_usb_dev(usb), "\n");
453 urb = usb_alloc_urb(0, GFP_KERNEL);
459 ZD_ASSERT(!irqs_disabled());
460 spin_lock_irq(&intr->lock);
462 spin_unlock_irq(&intr->lock);
467 spin_unlock_irq(&intr->lock);
469 /* TODO: make it a DMA buffer */
471 transfer_buffer = kmalloc(USB_MAX_EP_INT_BUFFER, GFP_KERNEL);
472 if (!transfer_buffer) {
473 dev_dbg_f(zd_usb_dev(usb),
474 "couldn't allocate transfer_buffer\n");
475 goto error_set_urb_null;
478 udev = zd_usb_to_usbdev(usb);
479 usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, EP_INT_IN),
480 transfer_buffer, USB_MAX_EP_INT_BUFFER,
481 int_urb_complete, usb,
484 dev_dbg_f(zd_usb_dev(usb), "submit urb %p\n", intr->urb);
485 r = usb_submit_urb(urb, GFP_KERNEL);
487 dev_dbg_f(zd_usb_dev(usb),
488 "Couldn't submit urb. Error number %d\n", r);
494 kfree(transfer_buffer);
496 spin_lock_irq(&intr->lock);
498 spin_unlock_irq(&intr->lock);
505 void zd_usb_disable_int(struct zd_usb *usb)
508 struct zd_usb_interrupt *intr = &usb->intr;
511 spin_lock_irqsave(&intr->lock, flags);
514 spin_unlock_irqrestore(&intr->lock, flags);
518 spin_unlock_irqrestore(&intr->lock, flags);
521 dev_dbg_f(zd_usb_dev(usb), "urb %p killed\n", urb);
525 static void handle_rx_packet(struct zd_usb *usb, const u8 *buffer,
529 struct zd_mac *mac = zd_usb_to_mac(usb);
530 const struct rx_length_info *length_info;
532 if (length < sizeof(struct rx_length_info)) {
533 /* It's not a complete packet anyhow. */
534 struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
535 ieee->stats.rx_errors++;
536 ieee->stats.rx_length_errors++;
539 length_info = (struct rx_length_info *)
540 (buffer + length - sizeof(struct rx_length_info));
542 /* It might be that three frames are merged into a single URB
543 * transaction. We have to check for the length info tag.
545 * While testing we discovered that length_info might be unaligned,
546 * because if USB transactions are merged, the last packet will not
547 * be padded. Unaligned access might also happen if the length_info
548 * structure is not present.
550 if (get_unaligned(&length_info->tag) == cpu_to_le16(RX_LENGTH_INFO_TAG))
552 unsigned int l, k, n;
553 for (i = 0, l = 0;; i++) {
554 k = le16_to_cpu(get_unaligned(&length_info->length[i]));
560 zd_mac_rx_irq(mac, buffer+l, k);
566 zd_mac_rx_irq(mac, buffer, length);
570 static void rx_urb_complete(struct urb *urb)
573 struct zd_usb_rx *rx;
577 switch (urb->status) {
588 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
592 buffer = urb->transfer_buffer;
593 length = urb->actual_length;
597 if (length%rx->usb_packet_size > rx->usb_packet_size-4) {
598 /* If there is an old first fragment, we don't care. */
599 dev_dbg_f(urb_dev(urb), "*** first fragment ***\n");
600 ZD_ASSERT(length <= ARRAY_SIZE(rx->fragment));
601 spin_lock(&rx->lock);
602 memcpy(rx->fragment, buffer, length);
603 rx->fragment_length = length;
604 spin_unlock(&rx->lock);
608 spin_lock(&rx->lock);
609 if (rx->fragment_length > 0) {
610 /* We are on a second fragment, we believe */
611 ZD_ASSERT(length + rx->fragment_length <=
612 ARRAY_SIZE(rx->fragment));
613 dev_dbg_f(urb_dev(urb), "*** second fragment ***\n");
614 memcpy(rx->fragment+rx->fragment_length, buffer, length);
615 handle_rx_packet(usb, rx->fragment,
616 rx->fragment_length + length);
617 rx->fragment_length = 0;
618 spin_unlock(&rx->lock);
620 spin_unlock(&rx->lock);
621 handle_rx_packet(usb, buffer, length);
625 usb_submit_urb(urb, GFP_ATOMIC);
628 static struct urb *alloc_urb(struct zd_usb *usb)
630 struct usb_device *udev = zd_usb_to_usbdev(usb);
634 urb = usb_alloc_urb(0, GFP_KERNEL);
637 buffer = usb_buffer_alloc(udev, USB_MAX_RX_SIZE, GFP_KERNEL,
644 usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, EP_DATA_IN),
645 buffer, USB_MAX_RX_SIZE,
646 rx_urb_complete, usb);
647 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
652 static void free_urb(struct urb *urb)
656 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
657 urb->transfer_buffer, urb->transfer_dma);
661 int zd_usb_enable_rx(struct zd_usb *usb)
664 struct zd_usb_rx *rx = &usb->rx;
667 dev_dbg_f(zd_usb_dev(usb), "\n");
670 urbs = kcalloc(URBS_COUNT, sizeof(struct urb *), GFP_KERNEL);
673 for (i = 0; i < URBS_COUNT; i++) {
674 urbs[i] = alloc_urb(usb);
679 ZD_ASSERT(!irqs_disabled());
680 spin_lock_irq(&rx->lock);
682 spin_unlock_irq(&rx->lock);
687 rx->urbs_count = URBS_COUNT;
688 spin_unlock_irq(&rx->lock);
690 for (i = 0; i < URBS_COUNT; i++) {
691 r = usb_submit_urb(urbs[i], GFP_KERNEL);
698 for (i = 0; i < URBS_COUNT; i++) {
699 usb_kill_urb(urbs[i]);
701 spin_lock_irq(&rx->lock);
704 spin_unlock_irq(&rx->lock);
707 for (i = 0; i < URBS_COUNT; i++)
713 void zd_usb_disable_rx(struct zd_usb *usb)
719 struct zd_usb_rx *rx = &usb->rx;
721 spin_lock_irqsave(&rx->lock, flags);
723 count = rx->urbs_count;
724 spin_unlock_irqrestore(&rx->lock, flags);
728 for (i = 0; i < count; i++) {
729 usb_kill_urb(urbs[i]);
734 spin_lock_irqsave(&rx->lock, flags);
737 spin_unlock_irqrestore(&rx->lock, flags);
740 static void tx_urb_complete(struct urb *urb)
744 switch (urb->status) {
753 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
756 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
760 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
761 urb->transfer_buffer, urb->transfer_dma);
765 r = usb_submit_urb(urb, GFP_ATOMIC);
767 dev_dbg_f(urb_dev(urb), "error resubmit urb %p %d\n", urb, r);
772 /* Puts the frame on the USB endpoint. It doesn't wait for
773 * completion. The frame must contain the control set.
775 int zd_usb_tx(struct zd_usb *usb, const u8 *frame, unsigned int length)
778 struct usb_device *udev = zd_usb_to_usbdev(usb);
782 urb = usb_alloc_urb(0, GFP_ATOMIC);
788 buffer = usb_buffer_alloc(zd_usb_to_usbdev(usb), length, GFP_ATOMIC,
794 memcpy(buffer, frame, length);
796 usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, EP_DATA_OUT),
797 buffer, length, tx_urb_complete, NULL);
798 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
800 r = usb_submit_urb(urb, GFP_ATOMIC);
805 usb_buffer_free(zd_usb_to_usbdev(usb), length, buffer,
813 static inline void init_usb_interrupt(struct zd_usb *usb)
815 struct zd_usb_interrupt *intr = &usb->intr;
817 spin_lock_init(&intr->lock);
818 intr->interval = int_urb_interval(zd_usb_to_usbdev(usb));
819 init_completion(&intr->read_regs.completion);
820 intr->read_regs.cr_int_addr = cpu_to_le16((u16)CR_INTERRUPT);
823 static inline void init_usb_rx(struct zd_usb *usb)
825 struct zd_usb_rx *rx = &usb->rx;
826 spin_lock_init(&rx->lock);
827 if (interface_to_usbdev(usb->intf)->speed == USB_SPEED_HIGH) {
828 rx->usb_packet_size = 512;
830 rx->usb_packet_size = 64;
832 ZD_ASSERT(rx->fragment_length == 0);
835 static inline void init_usb_tx(struct zd_usb *usb)
837 /* FIXME: at this point we will allocate a fixed number of urb's for
838 * use in a cyclic scheme */
841 void zd_usb_init(struct zd_usb *usb, struct net_device *netdev,
842 struct usb_interface *intf)
844 memset(usb, 0, sizeof(*usb));
845 usb->intf = usb_get_intf(intf);
846 usb_set_intfdata(usb->intf, netdev);
847 init_usb_interrupt(usb);
852 void zd_usb_clear(struct zd_usb *usb)
854 usb_set_intfdata(usb->intf, NULL);
855 usb_put_intf(usb->intf);
856 ZD_MEMCLEAR(usb, sizeof(*usb));
857 /* FIXME: usb_interrupt, usb_tx, usb_rx? */
860 static const char *speed(enum usb_device_speed speed)
870 return "unknown speed";
874 static int scnprint_id(struct usb_device *udev, char *buffer, size_t size)
876 return scnprintf(buffer, size, "%04hx:%04hx v%04hx %s",
877 le16_to_cpu(udev->descriptor.idVendor),
878 le16_to_cpu(udev->descriptor.idProduct),
883 int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size)
885 struct usb_device *udev = interface_to_usbdev(usb->intf);
886 return scnprint_id(udev, buffer, size);
890 static void print_id(struct usb_device *udev)
894 scnprint_id(udev, buffer, sizeof(buffer));
895 buffer[sizeof(buffer)-1] = 0;
896 dev_dbg_f(&udev->dev, "%s\n", buffer);
899 #define print_id(udev) do { } while (0)
902 static int eject_installer(struct usb_interface *intf)
904 struct usb_device *udev = interface_to_usbdev(intf);
905 struct usb_host_interface *iface_desc = &intf->altsetting[0];
906 struct usb_endpoint_descriptor *endpoint;
911 /* Find bulk out endpoint */
912 endpoint = &iface_desc->endpoint[1].desc;
913 if ((endpoint->bEndpointAddress & USB_TYPE_MASK) == USB_DIR_OUT &&
914 (endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
915 USB_ENDPOINT_XFER_BULK) {
916 bulk_out_ep = endpoint->bEndpointAddress;
919 "zd1211rw: Could not find bulk out endpoint\n");
923 cmd = kzalloc(31, GFP_KERNEL);
927 /* USB bulk command block */
928 cmd[0] = 0x55; /* bulk command signature */
929 cmd[1] = 0x53; /* bulk command signature */
930 cmd[2] = 0x42; /* bulk command signature */
931 cmd[3] = 0x43; /* bulk command signature */
932 cmd[14] = 6; /* command length */
934 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
935 cmd[19] = 0x2; /* eject disc */
937 dev_info(&udev->dev, "Ejecting virtual installer media...\n");
938 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
939 cmd, 31, NULL, 2000);
944 /* At this point, the device disconnects and reconnects with the real
947 usb_set_intfdata(intf, NULL);
951 int zd_usb_init_hw(struct zd_usb *usb)
954 struct zd_mac *mac = zd_usb_to_mac(usb);
956 dev_dbg_f(zd_usb_dev(usb), "\n");
958 r = upload_firmware(usb);
960 dev_err(zd_usb_dev(usb),
961 "couldn't load firmware. Error number %d\n", r);
965 r = usb_reset_configuration(zd_usb_to_usbdev(usb));
967 dev_dbg_f(zd_usb_dev(usb),
968 "couldn't reset configuration. Error number %d\n", r);
972 r = zd_mac_init_hw(mac);
974 dev_dbg_f(zd_usb_dev(usb),
975 "couldn't initialize mac. Error number %d\n", r);
979 usb->initialized = 1;
983 static int probe(struct usb_interface *intf, const struct usb_device_id *id)
987 struct usb_device *udev = interface_to_usbdev(intf);
988 struct net_device *netdev = NULL;
992 if (id->driver_info & DEVICE_INSTALLER)
993 return eject_installer(intf);
995 switch (udev->speed) {
1001 dev_dbg_f(&intf->dev, "Unknown USB speed\n");
1006 usb_reset_device(interface_to_usbdev(intf));
1008 netdev = zd_netdev_alloc(intf);
1009 if (netdev == NULL) {
1014 usb = &zd_netdev_mac(netdev)->chip.usb;
1015 usb->is_zd1211b = (id->driver_info == DEVICE_ZD1211B) != 0;
1017 r = zd_mac_preinit_hw(zd_netdev_mac(netdev));
1019 dev_dbg_f(&intf->dev,
1020 "couldn't initialize mac. Error number %d\n", r);
1024 r = register_netdev(netdev);
1026 dev_dbg_f(&intf->dev,
1027 "couldn't register netdev. Error number %d\n", r);
1031 dev_dbg_f(&intf->dev, "successful\n");
1032 dev_info(&intf->dev,"%s\n", netdev->name);
1035 usb_reset_device(interface_to_usbdev(intf));
1036 zd_netdev_free(netdev);
1040 static void disconnect(struct usb_interface *intf)
1042 struct net_device *netdev = zd_intf_to_netdev(intf);
1043 struct zd_mac *mac = zd_netdev_mac(netdev);
1044 struct zd_usb *usb = &mac->chip.usb;
1046 /* Either something really bad happened, or we're just dealing with
1047 * a DEVICE_INSTALLER. */
1051 dev_dbg_f(zd_usb_dev(usb), "\n");
1053 zd_netdev_disconnect(netdev);
1055 /* Just in case something has gone wrong! */
1056 zd_usb_disable_rx(usb);
1057 zd_usb_disable_int(usb);
1059 /* If the disconnect has been caused by a removal of the
1060 * driver module, the reset allows reloading of the driver. If the
1061 * reset will not be executed here, the upload of the firmware in the
1062 * probe function caused by the reloading of the driver will fail.
1064 usb_reset_device(interface_to_usbdev(intf));
1066 zd_netdev_free(netdev);
1067 dev_dbg(&intf->dev, "disconnected\n");
1070 static struct usb_driver driver = {
1072 .id_table = usb_ids,
1074 .disconnect = disconnect,
1077 struct workqueue_struct *zd_workqueue;
1079 static int __init usb_init(void)
1083 pr_debug("%s usb_init()\n", driver.name);
1085 zd_workqueue = create_singlethread_workqueue(driver.name);
1086 if (zd_workqueue == NULL) {
1087 printk(KERN_ERR "%s couldn't create workqueue\n", driver.name);
1091 r = usb_register(&driver);
1093 destroy_workqueue(zd_workqueue);
1094 printk(KERN_ERR "%s usb_register() failed. Error number %d\n",
1099 pr_debug("%s initialized\n", driver.name);
1103 static void __exit usb_exit(void)
1105 pr_debug("%s usb_exit()\n", driver.name);
1106 usb_deregister(&driver);
1107 destroy_workqueue(zd_workqueue);
1110 module_init(usb_init);
1111 module_exit(usb_exit);
1113 static int usb_int_regs_length(unsigned int count)
1115 return sizeof(struct usb_int_regs) + count * sizeof(struct reg_data);
1118 static void prepare_read_regs_int(struct zd_usb *usb)
1120 struct zd_usb_interrupt *intr = &usb->intr;
1122 spin_lock_irq(&intr->lock);
1123 intr->read_regs_enabled = 1;
1124 INIT_COMPLETION(intr->read_regs.completion);
1125 spin_unlock_irq(&intr->lock);
1128 static void disable_read_regs_int(struct zd_usb *usb)
1130 struct zd_usb_interrupt *intr = &usb->intr;
1132 spin_lock_irq(&intr->lock);
1133 intr->read_regs_enabled = 0;
1134 spin_unlock_irq(&intr->lock);
1137 static int get_results(struct zd_usb *usb, u16 *values,
1138 struct usb_req_read_regs *req, unsigned int count)
1142 struct zd_usb_interrupt *intr = &usb->intr;
1143 struct read_regs_int *rr = &intr->read_regs;
1144 struct usb_int_regs *regs = (struct usb_int_regs *)rr->buffer;
1146 spin_lock_irq(&intr->lock);
1149 /* The created block size seems to be larger than expected.
1150 * However results appear to be correct.
1152 if (rr->length < usb_int_regs_length(count)) {
1153 dev_dbg_f(zd_usb_dev(usb),
1154 "error: actual length %d less than expected %d\n",
1155 rr->length, usb_int_regs_length(count));
1158 if (rr->length > sizeof(rr->buffer)) {
1159 dev_dbg_f(zd_usb_dev(usb),
1160 "error: actual length %d exceeds buffer size %zu\n",
1161 rr->length, sizeof(rr->buffer));
1165 for (i = 0; i < count; i++) {
1166 struct reg_data *rd = ®s->regs[i];
1167 if (rd->addr != req->addr[i]) {
1168 dev_dbg_f(zd_usb_dev(usb),
1169 "rd[%d] addr %#06hx expected %#06hx\n", i,
1170 le16_to_cpu(rd->addr),
1171 le16_to_cpu(req->addr[i]));
1174 values[i] = le16_to_cpu(rd->value);
1179 spin_unlock_irq(&intr->lock);
1183 int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
1184 const zd_addr_t *addresses, unsigned int count)
1187 int i, req_len, actual_req_len;
1188 struct usb_device *udev;
1189 struct usb_req_read_regs *req = NULL;
1190 unsigned long timeout;
1193 dev_dbg_f(zd_usb_dev(usb), "error: count is zero\n");
1196 if (count > USB_MAX_IOREAD16_COUNT) {
1197 dev_dbg_f(zd_usb_dev(usb),
1198 "error: count %u exceeds possible max %u\n",
1199 count, USB_MAX_IOREAD16_COUNT);
1203 dev_dbg_f(zd_usb_dev(usb),
1204 "error: io in atomic context not supported\n");
1205 return -EWOULDBLOCK;
1207 if (!usb_int_enabled(usb)) {
1208 dev_dbg_f(zd_usb_dev(usb),
1209 "error: usb interrupt not enabled\n");
1210 return -EWOULDBLOCK;
1213 req_len = sizeof(struct usb_req_read_regs) + count * sizeof(__le16);
1214 req = kmalloc(req_len, GFP_KERNEL);
1217 req->id = cpu_to_le16(USB_REQ_READ_REGS);
1218 for (i = 0; i < count; i++)
1219 req->addr[i] = cpu_to_le16((u16)addresses[i]);
1221 udev = zd_usb_to_usbdev(usb);
1222 prepare_read_regs_int(usb);
1223 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1224 req, req_len, &actual_req_len, 1000 /* ms */);
1226 dev_dbg_f(zd_usb_dev(usb),
1227 "error in usb_bulk_msg(). Error number %d\n", r);
1230 if (req_len != actual_req_len) {
1231 dev_dbg_f(zd_usb_dev(usb), "error in usb_bulk_msg()\n"
1232 " req_len %d != actual_req_len %d\n",
1233 req_len, actual_req_len);
1238 timeout = wait_for_completion_timeout(&usb->intr.read_regs.completion,
1239 msecs_to_jiffies(1000));
1241 disable_read_regs_int(usb);
1242 dev_dbg_f(zd_usb_dev(usb), "read timed out\n");
1247 r = get_results(usb, values, req, count);
1253 int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
1257 struct usb_device *udev;
1258 struct usb_req_write_regs *req = NULL;
1259 int i, req_len, actual_req_len;
1263 if (count > USB_MAX_IOWRITE16_COUNT) {
1264 dev_dbg_f(zd_usb_dev(usb),
1265 "error: count %u exceeds possible max %u\n",
1266 count, USB_MAX_IOWRITE16_COUNT);
1270 dev_dbg_f(zd_usb_dev(usb),
1271 "error: io in atomic context not supported\n");
1272 return -EWOULDBLOCK;
1275 req_len = sizeof(struct usb_req_write_regs) +
1276 count * sizeof(struct reg_data);
1277 req = kmalloc(req_len, GFP_KERNEL);
1281 req->id = cpu_to_le16(USB_REQ_WRITE_REGS);
1282 for (i = 0; i < count; i++) {
1283 struct reg_data *rw = &req->reg_writes[i];
1284 rw->addr = cpu_to_le16((u16)ioreqs[i].addr);
1285 rw->value = cpu_to_le16(ioreqs[i].value);
1288 udev = zd_usb_to_usbdev(usb);
1289 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1290 req, req_len, &actual_req_len, 1000 /* ms */);
1292 dev_dbg_f(zd_usb_dev(usb),
1293 "error in usb_bulk_msg(). Error number %d\n", r);
1296 if (req_len != actual_req_len) {
1297 dev_dbg_f(zd_usb_dev(usb),
1298 "error in usb_bulk_msg()"
1299 " req_len %d != actual_req_len %d\n",
1300 req_len, actual_req_len);
1305 /* FALL-THROUGH with r == 0 */
1311 int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits)
1314 struct usb_device *udev;
1315 struct usb_req_rfwrite *req = NULL;
1316 int i, req_len, actual_req_len;
1317 u16 bit_value_template;
1320 dev_dbg_f(zd_usb_dev(usb),
1321 "error: io in atomic context not supported\n");
1322 return -EWOULDBLOCK;
1324 if (bits < USB_MIN_RFWRITE_BIT_COUNT) {
1325 dev_dbg_f(zd_usb_dev(usb),
1326 "error: bits %d are smaller than"
1327 " USB_MIN_RFWRITE_BIT_COUNT %d\n",
1328 bits, USB_MIN_RFWRITE_BIT_COUNT);
1331 if (bits > USB_MAX_RFWRITE_BIT_COUNT) {
1332 dev_dbg_f(zd_usb_dev(usb),
1333 "error: bits %d exceed USB_MAX_RFWRITE_BIT_COUNT %d\n",
1334 bits, USB_MAX_RFWRITE_BIT_COUNT);
1338 if (value & (~0UL << bits)) {
1339 dev_dbg_f(zd_usb_dev(usb),
1340 "error: value %#09x has bits >= %d set\n",
1346 dev_dbg_f(zd_usb_dev(usb), "value %#09x bits %d\n", value, bits);
1348 r = zd_usb_ioread16(usb, &bit_value_template, CR203);
1350 dev_dbg_f(zd_usb_dev(usb),
1351 "error %d: Couldn't read CR203\n", r);
1354 bit_value_template &= ~(RF_IF_LE|RF_CLK|RF_DATA);
1356 req_len = sizeof(struct usb_req_rfwrite) + bits * sizeof(__le16);
1357 req = kmalloc(req_len, GFP_KERNEL);
1361 req->id = cpu_to_le16(USB_REQ_WRITE_RF);
1362 /* 1: 3683a, but not used in ZYDAS driver */
1363 req->value = cpu_to_le16(2);
1364 req->bits = cpu_to_le16(bits);
1366 for (i = 0; i < bits; i++) {
1367 u16 bv = bit_value_template;
1368 if (value & (1 << (bits-1-i)))
1370 req->bit_values[i] = cpu_to_le16(bv);
1373 udev = zd_usb_to_usbdev(usb);
1374 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1375 req, req_len, &actual_req_len, 1000 /* ms */);
1377 dev_dbg_f(zd_usb_dev(usb),
1378 "error in usb_bulk_msg(). Error number %d\n", r);
1381 if (req_len != actual_req_len) {
1382 dev_dbg_f(zd_usb_dev(usb), "error in usb_bulk_msg()"
1383 " req_len %d != actual_req_len %d\n",
1384 req_len, actual_req_len);
1389 /* FALL-THROUGH with r == 0 */