3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 #include <asm/unaligned.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/module.h>
22 #include <linux/firmware.h>
23 #include <linux/device.h>
24 #include <linux/errno.h>
25 #include <linux/skbuff.h>
26 #include <linux/usb.h>
27 #include <linux/workqueue.h>
28 #include <net/ieee80211.h>
31 #include "zd_netdev.h"
36 static struct usb_device_id usb_ids[] = {
38 { USB_DEVICE(0x0ace, 0x1211), .driver_info = DEVICE_ZD1211 },
39 { USB_DEVICE(0x07b8, 0x6001), .driver_info = DEVICE_ZD1211 },
40 { USB_DEVICE(0x126f, 0xa006), .driver_info = DEVICE_ZD1211 },
41 { USB_DEVICE(0x6891, 0xa727), .driver_info = DEVICE_ZD1211 },
42 { USB_DEVICE(0x0df6, 0x9071), .driver_info = DEVICE_ZD1211 },
43 { USB_DEVICE(0x157e, 0x300b), .driver_info = DEVICE_ZD1211 },
44 { USB_DEVICE(0x079b, 0x004a), .driver_info = DEVICE_ZD1211 },
45 { USB_DEVICE(0x1740, 0x2000), .driver_info = DEVICE_ZD1211 },
46 { USB_DEVICE(0x157e, 0x3204), .driver_info = DEVICE_ZD1211 },
47 { USB_DEVICE(0x0586, 0x3402), .driver_info = DEVICE_ZD1211 },
48 { USB_DEVICE(0x0b3b, 0x5630), .driver_info = DEVICE_ZD1211 },
49 { USB_DEVICE(0x0b05, 0x170c), .driver_info = DEVICE_ZD1211 },
51 { USB_DEVICE(0x0ace, 0x1215), .driver_info = DEVICE_ZD1211B },
52 { USB_DEVICE(0x157e, 0x300d), .driver_info = DEVICE_ZD1211B },
53 { USB_DEVICE(0x079b, 0x0062), .driver_info = DEVICE_ZD1211B },
54 { USB_DEVICE(0x1582, 0x6003), .driver_info = DEVICE_ZD1211B },
55 /* "Driverless" devices that need ejecting */
56 { USB_DEVICE(0x0ace, 0x2011), .driver_info = DEVICE_INSTALLER },
60 MODULE_LICENSE("GPL");
61 MODULE_DESCRIPTION("USB driver for devices with the ZD1211 chip.");
62 MODULE_AUTHOR("Ulrich Kunitz");
63 MODULE_AUTHOR("Daniel Drake");
64 MODULE_VERSION("1.0");
65 MODULE_DEVICE_TABLE(usb, usb_ids);
67 #define FW_ZD1211_PREFIX "zd1211/zd1211_"
68 #define FW_ZD1211B_PREFIX "zd1211/zd1211b_"
70 /* register address handling */
73 static int check_addr(struct zd_usb *usb, zd_addr_t addr)
75 u32 base = ZD_ADDR_BASE(addr);
76 u32 offset = ZD_OFFSET(addr);
78 if ((u32)addr & ADDR_ZERO_MASK)
84 if (offset > CR_MAX_OFFSET) {
85 dev_dbg(zd_usb_dev(usb),
86 "CR offset %#010x larger than"
87 " CR_MAX_OFFSET %#10x\n",
88 offset, CR_MAX_OFFSET);
92 dev_dbg(zd_usb_dev(usb),
93 "CR offset %#010x is not a multiple of 2\n",
99 if (offset > E2P_MAX_OFFSET) {
100 dev_dbg(zd_usb_dev(usb),
101 "E2P offset %#010x larger than"
102 " E2P_MAX_OFFSET %#010x\n",
103 offset, E2P_MAX_OFFSET);
104 goto invalid_address;
108 if (!usb->fw_base_offset) {
109 dev_dbg(zd_usb_dev(usb),
110 "ERROR: fw base offset has not been set\n");
113 if (offset > FW_MAX_OFFSET) {
114 dev_dbg(zd_usb_dev(usb),
115 "FW offset %#10x is larger than"
116 " FW_MAX_OFFSET %#010x\n",
117 offset, FW_MAX_OFFSET);
118 goto invalid_address;
122 dev_dbg(zd_usb_dev(usb),
123 "address has unsupported base %#010x\n", addr);
124 goto invalid_address;
129 dev_dbg(zd_usb_dev(usb),
130 "ERROR: invalid address: %#010x\n", addr);
135 static u16 usb_addr(struct zd_usb *usb, zd_addr_t addr)
140 base = ZD_ADDR_BASE(addr);
141 offset = ZD_OFFSET(addr);
143 ZD_ASSERT(check_addr(usb, addr) == 0);
147 offset += CR_BASE_OFFSET;
150 offset += E2P_BASE_OFFSET;
153 offset += usb->fw_base_offset;
160 /* USB device initialization */
162 static int request_fw_file(
163 const struct firmware **fw, const char *name, struct device *device)
167 dev_dbg_f(device, "fw name %s\n", name);
169 r = request_firmware(fw, name, device);
172 "Could not load firmware file %s. Error number %d\n",
177 static inline u16 get_bcdDevice(const struct usb_device *udev)
179 return le16_to_cpu(udev->descriptor.bcdDevice);
182 enum upload_code_flags {
186 /* Ensures that MAX_TRANSFER_SIZE is even. */
187 #define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
189 static int upload_code(struct usb_device *udev,
190 const u8 *data, size_t size, u16 code_offset, int flags)
195 /* USB request blocks need "kmalloced" buffers.
197 p = kmalloc(MAX_TRANSFER_SIZE, GFP_KERNEL);
199 dev_err(&udev->dev, "out of memory\n");
206 size_t transfer_size = size <= MAX_TRANSFER_SIZE ?
207 size : MAX_TRANSFER_SIZE;
209 dev_dbg_f(&udev->dev, "transfer size %zu\n", transfer_size);
211 memcpy(p, data, transfer_size);
212 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
213 USB_REQ_FIRMWARE_DOWNLOAD,
214 USB_DIR_OUT | USB_TYPE_VENDOR,
215 code_offset, 0, p, transfer_size, 1000 /* ms */);
218 "USB control request for firmware upload"
219 " failed. Error number %d\n", r);
222 transfer_size = r & ~1;
224 size -= transfer_size;
225 data += transfer_size;
226 code_offset += transfer_size/sizeof(u16);
229 if (flags & REBOOT) {
232 r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
233 USB_REQ_FIRMWARE_CONFIRM,
234 USB_DIR_IN | USB_TYPE_VENDOR,
235 0, 0, &ret, sizeof(ret), 5000 /* ms */);
236 if (r != sizeof(ret)) {
238 "control request firmeware confirmation failed."
239 " Return value %d\n", r);
246 "Internal error while downloading."
247 " Firmware confirm return value %#04x\n",
252 dev_dbg_f(&udev->dev, "firmware confirm return value %#04x\n",
262 static u16 get_word(const void *data, u16 offset)
264 const __le16 *p = data;
265 return le16_to_cpu(p[offset]);
268 static char *get_fw_name(char *buffer, size_t size, u8 device_type,
271 scnprintf(buffer, size, "%s%s",
272 device_type == DEVICE_ZD1211B ?
273 FW_ZD1211B_PREFIX : FW_ZD1211_PREFIX,
278 static int handle_version_mismatch(struct usb_device *udev, u8 device_type,
279 const struct firmware *ub_fw)
281 const struct firmware *ur_fw = NULL;
286 r = request_fw_file(&ur_fw,
287 get_fw_name(fw_name, sizeof(fw_name), device_type, "ur"),
292 r = upload_code(udev, ur_fw->data, ur_fw->size, FW_START_OFFSET,
297 offset = ((EEPROM_REGS_OFFSET + EEPROM_REGS_SIZE) * sizeof(u16));
298 r = upload_code(udev, ub_fw->data + offset, ub_fw->size - offset,
299 E2P_BASE_OFFSET + EEPROM_REGS_SIZE, REBOOT);
301 /* At this point, the vendor driver downloads the whole firmware
302 * image, hacks around with version IDs, and uploads it again,
303 * completely overwriting the boot code. We do not do this here as
304 * it is not required on any tested devices, and it is suspected to
307 release_firmware(ur_fw);
311 static int upload_firmware(struct usb_device *udev, u8 device_type)
316 const struct firmware *ub_fw = NULL;
317 const struct firmware *uph_fw = NULL;
320 bcdDevice = get_bcdDevice(udev);
322 r = request_fw_file(&ub_fw,
323 get_fw_name(fw_name, sizeof(fw_name), device_type, "ub"),
328 fw_bcdDevice = get_word(ub_fw->data, EEPROM_REGS_OFFSET);
330 if (fw_bcdDevice != bcdDevice) {
332 "firmware version %#06x and device bootcode version "
333 "%#06x differ\n", fw_bcdDevice, bcdDevice);
334 if (bcdDevice <= 0x4313)
335 dev_warn(&udev->dev, "device has old bootcode, please "
336 "report success or failure\n");
338 r = handle_version_mismatch(udev, device_type, ub_fw);
342 dev_dbg_f(&udev->dev,
343 "firmware device id %#06x is equal to the "
344 "actual device id\n", fw_bcdDevice);
348 r = request_fw_file(&uph_fw,
349 get_fw_name(fw_name, sizeof(fw_name), device_type, "uphr"),
354 r = upload_code(udev, uph_fw->data, uph_fw->size, FW_START_OFFSET,
358 "Could not upload firmware code uph. Error number %d\n",
364 release_firmware(ub_fw);
365 release_firmware(uph_fw);
369 #define urb_dev(urb) (&(urb)->dev->dev)
371 static inline void handle_regs_int(struct urb *urb)
373 struct zd_usb *usb = urb->context;
374 struct zd_usb_interrupt *intr = &usb->intr;
377 ZD_ASSERT(in_interrupt());
378 spin_lock(&intr->lock);
380 if (intr->read_regs_enabled) {
381 intr->read_regs.length = len = urb->actual_length;
383 if (len > sizeof(intr->read_regs.buffer))
384 len = sizeof(intr->read_regs.buffer);
385 memcpy(intr->read_regs.buffer, urb->transfer_buffer, len);
386 intr->read_regs_enabled = 0;
387 complete(&intr->read_regs.completion);
391 dev_dbg_f(urb_dev(urb), "regs interrupt ignored\n");
393 spin_unlock(&intr->lock);
396 static inline void handle_retry_failed_int(struct urb *urb)
398 dev_dbg_f(urb_dev(urb), "retry failed interrupt\n");
402 static void int_urb_complete(struct urb *urb)
405 struct usb_int_header *hdr;
407 switch (urb->status) {
421 if (urb->actual_length < sizeof(hdr)) {
422 dev_dbg_f(urb_dev(urb), "error: urb %p to small\n", urb);
426 hdr = urb->transfer_buffer;
427 if (hdr->type != USB_INT_TYPE) {
428 dev_dbg_f(urb_dev(urb), "error: urb %p wrong type\n", urb);
433 case USB_INT_ID_REGS:
434 handle_regs_int(urb);
436 case USB_INT_ID_RETRY_FAILED:
437 handle_retry_failed_int(urb);
440 dev_dbg_f(urb_dev(urb), "error: urb %p unknown id %x\n", urb,
441 (unsigned int)hdr->id);
446 r = usb_submit_urb(urb, GFP_ATOMIC);
448 dev_dbg_f(urb_dev(urb), "resubmit urb %p\n", urb);
453 kfree(urb->transfer_buffer);
456 static inline int int_urb_interval(struct usb_device *udev)
458 switch (udev->speed) {
469 static inline int usb_int_enabled(struct zd_usb *usb)
472 struct zd_usb_interrupt *intr = &usb->intr;
475 spin_lock_irqsave(&intr->lock, flags);
477 spin_unlock_irqrestore(&intr->lock, flags);
481 int zd_usb_enable_int(struct zd_usb *usb)
484 struct usb_device *udev;
485 struct zd_usb_interrupt *intr = &usb->intr;
486 void *transfer_buffer = NULL;
489 dev_dbg_f(zd_usb_dev(usb), "\n");
491 urb = usb_alloc_urb(0, GFP_NOFS);
497 ZD_ASSERT(!irqs_disabled());
498 spin_lock_irq(&intr->lock);
500 spin_unlock_irq(&intr->lock);
505 spin_unlock_irq(&intr->lock);
507 /* TODO: make it a DMA buffer */
509 transfer_buffer = kmalloc(USB_MAX_EP_INT_BUFFER, GFP_NOFS);
510 if (!transfer_buffer) {
511 dev_dbg_f(zd_usb_dev(usb),
512 "couldn't allocate transfer_buffer\n");
513 goto error_set_urb_null;
516 udev = zd_usb_to_usbdev(usb);
517 usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, EP_INT_IN),
518 transfer_buffer, USB_MAX_EP_INT_BUFFER,
519 int_urb_complete, usb,
522 dev_dbg_f(zd_usb_dev(usb), "submit urb %p\n", intr->urb);
523 r = usb_submit_urb(urb, GFP_NOFS);
525 dev_dbg_f(zd_usb_dev(usb),
526 "Couldn't submit urb. Error number %d\n", r);
532 kfree(transfer_buffer);
534 spin_lock_irq(&intr->lock);
536 spin_unlock_irq(&intr->lock);
543 void zd_usb_disable_int(struct zd_usb *usb)
546 struct zd_usb_interrupt *intr = &usb->intr;
549 spin_lock_irqsave(&intr->lock, flags);
552 spin_unlock_irqrestore(&intr->lock, flags);
556 spin_unlock_irqrestore(&intr->lock, flags);
559 dev_dbg_f(zd_usb_dev(usb), "urb %p killed\n", urb);
563 static void handle_rx_packet(struct zd_usb *usb, const u8 *buffer,
567 struct zd_mac *mac = zd_usb_to_mac(usb);
568 const struct rx_length_info *length_info;
570 if (length < sizeof(struct rx_length_info)) {
571 /* It's not a complete packet anyhow. */
574 length_info = (struct rx_length_info *)
575 (buffer + length - sizeof(struct rx_length_info));
577 /* It might be that three frames are merged into a single URB
578 * transaction. We have to check for the length info tag.
580 * While testing we discovered that length_info might be unaligned,
581 * because if USB transactions are merged, the last packet will not
582 * be padded. Unaligned access might also happen if the length_info
583 * structure is not present.
585 if (get_unaligned(&length_info->tag) == cpu_to_le16(RX_LENGTH_INFO_TAG))
587 unsigned int l, k, n;
588 for (i = 0, l = 0;; i++) {
589 k = le16_to_cpu(get_unaligned(&length_info->length[i]));
593 zd_mac_rx(mac, buffer+l, k);
599 zd_mac_rx(mac, buffer, length);
603 static void rx_urb_complete(struct urb *urb)
606 struct zd_usb_rx *rx;
610 switch (urb->status) {
621 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
625 buffer = urb->transfer_buffer;
626 length = urb->actual_length;
630 if (length%rx->usb_packet_size > rx->usb_packet_size-4) {
631 /* If there is an old first fragment, we don't care. */
632 dev_dbg_f(urb_dev(urb), "*** first fragment ***\n");
633 ZD_ASSERT(length <= ARRAY_SIZE(rx->fragment));
634 spin_lock(&rx->lock);
635 memcpy(rx->fragment, buffer, length);
636 rx->fragment_length = length;
637 spin_unlock(&rx->lock);
641 spin_lock(&rx->lock);
642 if (rx->fragment_length > 0) {
643 /* We are on a second fragment, we believe */
644 ZD_ASSERT(length + rx->fragment_length <=
645 ARRAY_SIZE(rx->fragment));
646 dev_dbg_f(urb_dev(urb), "*** second fragment ***\n");
647 memcpy(rx->fragment+rx->fragment_length, buffer, length);
648 handle_rx_packet(usb, rx->fragment,
649 rx->fragment_length + length);
650 rx->fragment_length = 0;
651 spin_unlock(&rx->lock);
653 spin_unlock(&rx->lock);
654 handle_rx_packet(usb, buffer, length);
658 usb_submit_urb(urb, GFP_ATOMIC);
661 static struct urb *alloc_urb(struct zd_usb *usb)
663 struct usb_device *udev = zd_usb_to_usbdev(usb);
667 urb = usb_alloc_urb(0, GFP_NOFS);
670 buffer = usb_buffer_alloc(udev, USB_MAX_RX_SIZE, GFP_NOFS,
677 usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, EP_DATA_IN),
678 buffer, USB_MAX_RX_SIZE,
679 rx_urb_complete, usb);
680 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
685 static void free_urb(struct urb *urb)
689 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
690 urb->transfer_buffer, urb->transfer_dma);
694 int zd_usb_enable_rx(struct zd_usb *usb)
697 struct zd_usb_rx *rx = &usb->rx;
700 dev_dbg_f(zd_usb_dev(usb), "\n");
703 urbs = kcalloc(URBS_COUNT, sizeof(struct urb *), GFP_NOFS);
706 for (i = 0; i < URBS_COUNT; i++) {
707 urbs[i] = alloc_urb(usb);
712 ZD_ASSERT(!irqs_disabled());
713 spin_lock_irq(&rx->lock);
715 spin_unlock_irq(&rx->lock);
720 rx->urbs_count = URBS_COUNT;
721 spin_unlock_irq(&rx->lock);
723 for (i = 0; i < URBS_COUNT; i++) {
724 r = usb_submit_urb(urbs[i], GFP_NOFS);
731 for (i = 0; i < URBS_COUNT; i++) {
732 usb_kill_urb(urbs[i]);
734 spin_lock_irq(&rx->lock);
737 spin_unlock_irq(&rx->lock);
740 for (i = 0; i < URBS_COUNT; i++)
746 void zd_usb_disable_rx(struct zd_usb *usb)
752 struct zd_usb_rx *rx = &usb->rx;
754 spin_lock_irqsave(&rx->lock, flags);
756 count = rx->urbs_count;
757 spin_unlock_irqrestore(&rx->lock, flags);
761 for (i = 0; i < count; i++) {
762 usb_kill_urb(urbs[i]);
767 spin_lock_irqsave(&rx->lock, flags);
770 spin_unlock_irqrestore(&rx->lock, flags);
773 static void tx_urb_complete(struct urb *urb)
777 switch (urb->status) {
786 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
789 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
793 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
794 urb->transfer_buffer, urb->transfer_dma);
798 r = usb_submit_urb(urb, GFP_ATOMIC);
800 dev_dbg_f(urb_dev(urb), "error resubmit urb %p %d\n", urb, r);
805 /* Puts the frame on the USB endpoint. It doesn't wait for
806 * completion. The frame must contain the control set.
808 int zd_usb_tx(struct zd_usb *usb, const u8 *frame, unsigned int length)
811 struct usb_device *udev = zd_usb_to_usbdev(usb);
815 urb = usb_alloc_urb(0, GFP_ATOMIC);
821 buffer = usb_buffer_alloc(zd_usb_to_usbdev(usb), length, GFP_ATOMIC,
827 memcpy(buffer, frame, length);
829 usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, EP_DATA_OUT),
830 buffer, length, tx_urb_complete, NULL);
831 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
833 r = usb_submit_urb(urb, GFP_ATOMIC);
838 usb_buffer_free(zd_usb_to_usbdev(usb), length, buffer,
846 static inline void init_usb_interrupt(struct zd_usb *usb)
848 struct zd_usb_interrupt *intr = &usb->intr;
850 spin_lock_init(&intr->lock);
851 intr->interval = int_urb_interval(zd_usb_to_usbdev(usb));
852 init_completion(&intr->read_regs.completion);
853 intr->read_regs.cr_int_addr = cpu_to_le16(usb_addr(usb, CR_INTERRUPT));
856 static inline void init_usb_rx(struct zd_usb *usb)
858 struct zd_usb_rx *rx = &usb->rx;
859 spin_lock_init(&rx->lock);
860 if (interface_to_usbdev(usb->intf)->speed == USB_SPEED_HIGH) {
861 rx->usb_packet_size = 512;
863 rx->usb_packet_size = 64;
865 ZD_ASSERT(rx->fragment_length == 0);
868 static inline void init_usb_tx(struct zd_usb *usb)
870 /* FIXME: at this point we will allocate a fixed number of urb's for
871 * use in a cyclic scheme */
874 void zd_usb_init(struct zd_usb *usb, struct net_device *netdev,
875 struct usb_interface *intf)
877 memset(usb, 0, sizeof(*usb));
878 usb->intf = usb_get_intf(intf);
879 usb_set_intfdata(usb->intf, netdev);
880 init_usb_interrupt(usb);
885 int zd_usb_init_hw(struct zd_usb *usb)
888 struct zd_chip *chip = zd_usb_to_chip(usb);
890 ZD_ASSERT(mutex_is_locked(&chip->mutex));
891 r = zd_ioread16_locked(chip, &usb->fw_base_offset,
892 USB_REG((u16)FW_BASE_ADDR_OFFSET));
895 dev_dbg_f(zd_usb_dev(usb), "fw_base_offset: %#06hx\n",
896 usb->fw_base_offset);
901 void zd_usb_clear(struct zd_usb *usb)
903 usb_set_intfdata(usb->intf, NULL);
904 usb_put_intf(usb->intf);
905 ZD_MEMCLEAR(usb, sizeof(*usb));
906 /* FIXME: usb_interrupt, usb_tx, usb_rx? */
909 static const char *speed(enum usb_device_speed speed)
919 return "unknown speed";
923 static int scnprint_id(struct usb_device *udev, char *buffer, size_t size)
925 return scnprintf(buffer, size, "%04hx:%04hx v%04hx %s",
926 le16_to_cpu(udev->descriptor.idVendor),
927 le16_to_cpu(udev->descriptor.idProduct),
932 int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size)
934 struct usb_device *udev = interface_to_usbdev(usb->intf);
935 return scnprint_id(udev, buffer, size);
939 static void print_id(struct usb_device *udev)
943 scnprint_id(udev, buffer, sizeof(buffer));
944 buffer[sizeof(buffer)-1] = 0;
945 dev_dbg_f(&udev->dev, "%s\n", buffer);
948 #define print_id(udev) do { } while (0)
951 static int eject_installer(struct usb_interface *intf)
953 struct usb_device *udev = interface_to_usbdev(intf);
954 struct usb_host_interface *iface_desc = &intf->altsetting[0];
955 struct usb_endpoint_descriptor *endpoint;
960 /* Find bulk out endpoint */
961 endpoint = &iface_desc->endpoint[1].desc;
962 if ((endpoint->bEndpointAddress & USB_TYPE_MASK) == USB_DIR_OUT &&
963 (endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
964 USB_ENDPOINT_XFER_BULK) {
965 bulk_out_ep = endpoint->bEndpointAddress;
968 "zd1211rw: Could not find bulk out endpoint\n");
972 cmd = kzalloc(31, GFP_KERNEL);
976 /* USB bulk command block */
977 cmd[0] = 0x55; /* bulk command signature */
978 cmd[1] = 0x53; /* bulk command signature */
979 cmd[2] = 0x42; /* bulk command signature */
980 cmd[3] = 0x43; /* bulk command signature */
981 cmd[14] = 6; /* command length */
983 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
984 cmd[19] = 0x2; /* eject disc */
986 dev_info(&udev->dev, "Ejecting virtual installer media...\n");
987 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
988 cmd, 31, NULL, 2000);
993 /* At this point, the device disconnects and reconnects with the real
996 usb_set_intfdata(intf, NULL);
1000 static int probe(struct usb_interface *intf, const struct usb_device_id *id)
1003 struct usb_device *udev = interface_to_usbdev(intf);
1004 struct net_device *netdev = NULL;
1008 if (id->driver_info & DEVICE_INSTALLER)
1009 return eject_installer(intf);
1011 switch (udev->speed) {
1013 case USB_SPEED_FULL:
1014 case USB_SPEED_HIGH:
1017 dev_dbg_f(&intf->dev, "Unknown USB speed\n");
1022 netdev = zd_netdev_alloc(intf);
1023 if (netdev == NULL) {
1028 r = upload_firmware(udev, id->driver_info);
1031 "couldn't load firmware. Error number %d\n", r);
1035 r = usb_reset_configuration(udev);
1037 dev_dbg_f(&intf->dev,
1038 "couldn't reset configuration. Error number %d\n", r);
1042 /* At this point the interrupt endpoint is not generally enabled. We
1043 * save the USB bandwidth until the network device is opened. But
1044 * notify that the initialization of the MAC will require the
1045 * interrupts to be temporary enabled.
1047 r = zd_mac_init_hw(zd_netdev_mac(netdev), id->driver_info);
1049 dev_dbg_f(&intf->dev,
1050 "couldn't initialize mac. Error number %d\n", r);
1054 r = register_netdev(netdev);
1056 dev_dbg_f(&intf->dev,
1057 "couldn't register netdev. Error number %d\n", r);
1061 dev_dbg_f(&intf->dev, "successful\n");
1062 dev_info(&intf->dev,"%s\n", netdev->name);
1065 usb_reset_device(interface_to_usbdev(intf));
1066 zd_netdev_free(netdev);
1070 static void disconnect(struct usb_interface *intf)
1072 struct net_device *netdev = zd_intf_to_netdev(intf);
1073 struct zd_mac *mac = zd_netdev_mac(netdev);
1074 struct zd_usb *usb = &mac->chip.usb;
1076 /* Either something really bad happened, or we're just dealing with
1077 * a DEVICE_INSTALLER. */
1081 dev_dbg_f(zd_usb_dev(usb), "\n");
1083 zd_netdev_disconnect(netdev);
1085 /* Just in case something has gone wrong! */
1086 zd_usb_disable_rx(usb);
1087 zd_usb_disable_int(usb);
1089 /* If the disconnect has been caused by a removal of the
1090 * driver module, the reset allows reloading of the driver. If the
1091 * reset will not be executed here, the upload of the firmware in the
1092 * probe function caused by the reloading of the driver will fail.
1094 usb_reset_device(interface_to_usbdev(intf));
1096 zd_netdev_free(netdev);
1097 dev_dbg(&intf->dev, "disconnected\n");
1100 static struct usb_driver driver = {
1102 .id_table = usb_ids,
1104 .disconnect = disconnect,
1107 struct workqueue_struct *zd_workqueue;
1109 static int __init usb_init(void)
1113 pr_debug("usb_init()\n");
1115 zd_workqueue = create_singlethread_workqueue(driver.name);
1116 if (zd_workqueue == NULL) {
1117 printk(KERN_ERR "%s: couldn't create workqueue\n", driver.name);
1121 r = usb_register(&driver);
1123 printk(KERN_ERR "usb_register() failed. Error number %d\n", r);
1127 pr_debug("zd1211rw initialized\n");
1131 static void __exit usb_exit(void)
1133 pr_debug("usb_exit()\n");
1134 usb_deregister(&driver);
1135 destroy_workqueue(zd_workqueue);
1138 module_init(usb_init);
1139 module_exit(usb_exit);
1141 static int usb_int_regs_length(unsigned int count)
1143 return sizeof(struct usb_int_regs) + count * sizeof(struct reg_data);
1146 static void prepare_read_regs_int(struct zd_usb *usb)
1148 struct zd_usb_interrupt *intr = &usb->intr;
1150 spin_lock_irq(&intr->lock);
1151 intr->read_regs_enabled = 1;
1152 INIT_COMPLETION(intr->read_regs.completion);
1153 spin_unlock_irq(&intr->lock);
1156 static void disable_read_regs_int(struct zd_usb *usb)
1158 struct zd_usb_interrupt *intr = &usb->intr;
1160 spin_lock_irq(&intr->lock);
1161 intr->read_regs_enabled = 0;
1162 spin_unlock_irq(&intr->lock);
1165 static int get_results(struct zd_usb *usb, u16 *values,
1166 struct usb_req_read_regs *req, unsigned int count)
1170 struct zd_usb_interrupt *intr = &usb->intr;
1171 struct read_regs_int *rr = &intr->read_regs;
1172 struct usb_int_regs *regs = (struct usb_int_regs *)rr->buffer;
1174 spin_lock_irq(&intr->lock);
1177 /* The created block size seems to be larger than expected.
1178 * However results appear to be correct.
1180 if (rr->length < usb_int_regs_length(count)) {
1181 dev_dbg_f(zd_usb_dev(usb),
1182 "error: actual length %d less than expected %d\n",
1183 rr->length, usb_int_regs_length(count));
1186 if (rr->length > sizeof(rr->buffer)) {
1187 dev_dbg_f(zd_usb_dev(usb),
1188 "error: actual length %d exceeds buffer size %zu\n",
1189 rr->length, sizeof(rr->buffer));
1193 for (i = 0; i < count; i++) {
1194 struct reg_data *rd = ®s->regs[i];
1195 if (rd->addr != req->addr[i]) {
1196 dev_dbg_f(zd_usb_dev(usb),
1197 "rd[%d] addr %#06hx expected %#06hx\n", i,
1198 le16_to_cpu(rd->addr),
1199 le16_to_cpu(req->addr[i]));
1202 values[i] = le16_to_cpu(rd->value);
1207 spin_unlock_irq(&intr->lock);
1211 int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
1212 const zd_addr_t *addresses, unsigned int count)
1215 int i, req_len, actual_req_len;
1216 struct usb_device *udev;
1217 struct usb_req_read_regs *req = NULL;
1218 unsigned long timeout;
1221 dev_dbg_f(zd_usb_dev(usb), "error: count is zero\n");
1224 if (count > USB_MAX_IOREAD16_COUNT) {
1225 dev_dbg_f(zd_usb_dev(usb),
1226 "error: count %u exceeds possible max %u\n",
1227 count, USB_MAX_IOREAD16_COUNT);
1231 dev_dbg_f(zd_usb_dev(usb),
1232 "error: io in atomic context not supported\n");
1233 return -EWOULDBLOCK;
1235 if (!usb_int_enabled(usb)) {
1236 dev_dbg_f(zd_usb_dev(usb),
1237 "error: usb interrupt not enabled\n");
1238 return -EWOULDBLOCK;
1241 req_len = sizeof(struct usb_req_read_regs) + count * sizeof(__le16);
1242 req = kmalloc(req_len, GFP_NOFS);
1245 req->id = cpu_to_le16(USB_REQ_READ_REGS);
1246 for (i = 0; i < count; i++)
1247 req->addr[i] = cpu_to_le16(usb_addr(usb, addresses[i]));
1249 udev = zd_usb_to_usbdev(usb);
1250 prepare_read_regs_int(usb);
1251 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1252 req, req_len, &actual_req_len, 1000 /* ms */);
1254 dev_dbg_f(zd_usb_dev(usb),
1255 "error in usb_bulk_msg(). Error number %d\n", r);
1258 if (req_len != actual_req_len) {
1259 dev_dbg_f(zd_usb_dev(usb), "error in usb_bulk_msg()\n"
1260 " req_len %d != actual_req_len %d\n",
1261 req_len, actual_req_len);
1266 timeout = wait_for_completion_timeout(&usb->intr.read_regs.completion,
1267 msecs_to_jiffies(1000));
1269 disable_read_regs_int(usb);
1270 dev_dbg_f(zd_usb_dev(usb), "read timed out\n");
1275 r = get_results(usb, values, req, count);
1281 int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
1285 struct usb_device *udev;
1286 struct usb_req_write_regs *req = NULL;
1287 int i, req_len, actual_req_len;
1291 if (count > USB_MAX_IOWRITE16_COUNT) {
1292 dev_dbg_f(zd_usb_dev(usb),
1293 "error: count %u exceeds possible max %u\n",
1294 count, USB_MAX_IOWRITE16_COUNT);
1298 dev_dbg_f(zd_usb_dev(usb),
1299 "error: io in atomic context not supported\n");
1300 return -EWOULDBLOCK;
1303 req_len = sizeof(struct usb_req_write_regs) +
1304 count * sizeof(struct reg_data);
1305 req = kmalloc(req_len, GFP_NOFS);
1309 req->id = cpu_to_le16(USB_REQ_WRITE_REGS);
1310 for (i = 0; i < count; i++) {
1311 struct reg_data *rw = &req->reg_writes[i];
1312 rw->addr = cpu_to_le16(usb_addr(usb, ioreqs[i].addr));
1313 rw->value = cpu_to_le16(ioreqs[i].value);
1316 udev = zd_usb_to_usbdev(usb);
1317 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1318 req, req_len, &actual_req_len, 1000 /* ms */);
1320 dev_dbg_f(zd_usb_dev(usb),
1321 "error in usb_bulk_msg(). Error number %d\n", r);
1324 if (req_len != actual_req_len) {
1325 dev_dbg_f(zd_usb_dev(usb),
1326 "error in usb_bulk_msg()"
1327 " req_len %d != actual_req_len %d\n",
1328 req_len, actual_req_len);
1333 /* FALL-THROUGH with r == 0 */
1339 int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits)
1342 struct usb_device *udev;
1343 struct usb_req_rfwrite *req = NULL;
1344 int i, req_len, actual_req_len;
1345 u16 bit_value_template;
1348 dev_dbg_f(zd_usb_dev(usb),
1349 "error: io in atomic context not supported\n");
1350 return -EWOULDBLOCK;
1352 if (bits < USB_MIN_RFWRITE_BIT_COUNT) {
1353 dev_dbg_f(zd_usb_dev(usb),
1354 "error: bits %d are smaller than"
1355 " USB_MIN_RFWRITE_BIT_COUNT %d\n",
1356 bits, USB_MIN_RFWRITE_BIT_COUNT);
1359 if (bits > USB_MAX_RFWRITE_BIT_COUNT) {
1360 dev_dbg_f(zd_usb_dev(usb),
1361 "error: bits %d exceed USB_MAX_RFWRITE_BIT_COUNT %d\n",
1362 bits, USB_MAX_RFWRITE_BIT_COUNT);
1366 if (value & (~0UL << bits)) {
1367 dev_dbg_f(zd_usb_dev(usb),
1368 "error: value %#09x has bits >= %d set\n",
1374 dev_dbg_f(zd_usb_dev(usb), "value %#09x bits %d\n", value, bits);
1376 r = zd_usb_ioread16(usb, &bit_value_template, CR203);
1378 dev_dbg_f(zd_usb_dev(usb),
1379 "error %d: Couldn't read CR203\n", r);
1382 bit_value_template &= ~(RF_IF_LE|RF_CLK|RF_DATA);
1384 req_len = sizeof(struct usb_req_rfwrite) + bits * sizeof(__le16);
1385 req = kmalloc(req_len, GFP_NOFS);
1389 req->id = cpu_to_le16(USB_REQ_WRITE_RF);
1390 /* 1: 3683a, but not used in ZYDAS driver */
1391 req->value = cpu_to_le16(2);
1392 req->bits = cpu_to_le16(bits);
1394 for (i = 0; i < bits; i++) {
1395 u16 bv = bit_value_template;
1396 if (value & (1 << (bits-1-i)))
1398 req->bit_values[i] = cpu_to_le16(bv);
1401 udev = zd_usb_to_usbdev(usb);
1402 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1403 req, req_len, &actual_req_len, 1000 /* ms */);
1405 dev_dbg_f(zd_usb_dev(usb),
1406 "error in usb_bulk_msg(). Error number %d\n", r);
1409 if (req_len != actual_req_len) {
1410 dev_dbg_f(zd_usb_dev(usb), "error in usb_bulk_msg()"
1411 " req_len %d != actual_req_len %d\n",
1412 req_len, actual_req_len);
1417 /* FALL-THROUGH with r == 0 */