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 },
50 { USB_DEVICE(0x1435, 0x0711), .driver_info = DEVICE_ZD1211 },
51 { USB_DEVICE(0x0586, 0x3409), .driver_info = DEVICE_ZD1211 },
52 { USB_DEVICE(0x0b3b, 0x1630), .driver_info = DEVICE_ZD1211 },
53 { USB_DEVICE(0x0586, 0x3401), .driver_info = DEVICE_ZD1211 },
55 { USB_DEVICE(0x0ace, 0x1215), .driver_info = DEVICE_ZD1211B },
56 { USB_DEVICE(0x157e, 0x300d), .driver_info = DEVICE_ZD1211B },
57 { USB_DEVICE(0x079b, 0x0062), .driver_info = DEVICE_ZD1211B },
58 { USB_DEVICE(0x1582, 0x6003), .driver_info = DEVICE_ZD1211B },
59 /* "Driverless" devices that need ejecting */
60 { USB_DEVICE(0x0ace, 0x2011), .driver_info = DEVICE_INSTALLER },
64 MODULE_LICENSE("GPL");
65 MODULE_DESCRIPTION("USB driver for devices with the ZD1211 chip.");
66 MODULE_AUTHOR("Ulrich Kunitz");
67 MODULE_AUTHOR("Daniel Drake");
68 MODULE_VERSION("1.0");
69 MODULE_DEVICE_TABLE(usb, usb_ids);
71 #define FW_ZD1211_PREFIX "zd1211/zd1211_"
72 #define FW_ZD1211B_PREFIX "zd1211/zd1211b_"
74 /* register address handling */
77 static int check_addr(struct zd_usb *usb, zd_addr_t addr)
79 u32 base = ZD_ADDR_BASE(addr);
80 u32 offset = ZD_OFFSET(addr);
82 if ((u32)addr & ADDR_ZERO_MASK)
88 if (offset > CR_MAX_OFFSET) {
89 dev_dbg(zd_usb_dev(usb),
90 "CR offset %#010x larger than"
91 " CR_MAX_OFFSET %#10x\n",
92 offset, CR_MAX_OFFSET);
96 dev_dbg(zd_usb_dev(usb),
97 "CR offset %#010x is not a multiple of 2\n",
103 if (offset > E2P_MAX_OFFSET) {
104 dev_dbg(zd_usb_dev(usb),
105 "E2P offset %#010x larger than"
106 " E2P_MAX_OFFSET %#010x\n",
107 offset, E2P_MAX_OFFSET);
108 goto invalid_address;
112 if (!usb->fw_base_offset) {
113 dev_dbg(zd_usb_dev(usb),
114 "ERROR: fw base offset has not been set\n");
117 if (offset > FW_MAX_OFFSET) {
118 dev_dbg(zd_usb_dev(usb),
119 "FW offset %#10x is larger than"
120 " FW_MAX_OFFSET %#010x\n",
121 offset, FW_MAX_OFFSET);
122 goto invalid_address;
126 dev_dbg(zd_usb_dev(usb),
127 "address has unsupported base %#010x\n", addr);
128 goto invalid_address;
133 dev_dbg(zd_usb_dev(usb),
134 "ERROR: invalid address: %#010x\n", addr);
139 static u16 usb_addr(struct zd_usb *usb, zd_addr_t addr)
144 base = ZD_ADDR_BASE(addr);
145 offset = ZD_OFFSET(addr);
147 ZD_ASSERT(check_addr(usb, addr) == 0);
151 offset += CR_BASE_OFFSET;
154 offset += E2P_BASE_OFFSET;
157 offset += usb->fw_base_offset;
164 /* USB device initialization */
166 static int request_fw_file(
167 const struct firmware **fw, const char *name, struct device *device)
171 dev_dbg_f(device, "fw name %s\n", name);
173 r = request_firmware(fw, name, device);
176 "Could not load firmware file %s. Error number %d\n",
181 static inline u16 get_bcdDevice(const struct usb_device *udev)
183 return le16_to_cpu(udev->descriptor.bcdDevice);
186 enum upload_code_flags {
190 /* Ensures that MAX_TRANSFER_SIZE is even. */
191 #define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
193 static int upload_code(struct usb_device *udev,
194 const u8 *data, size_t size, u16 code_offset, int flags)
199 /* USB request blocks need "kmalloced" buffers.
201 p = kmalloc(MAX_TRANSFER_SIZE, GFP_KERNEL);
203 dev_err(&udev->dev, "out of memory\n");
210 size_t transfer_size = size <= MAX_TRANSFER_SIZE ?
211 size : MAX_TRANSFER_SIZE;
213 dev_dbg_f(&udev->dev, "transfer size %zu\n", transfer_size);
215 memcpy(p, data, transfer_size);
216 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
217 USB_REQ_FIRMWARE_DOWNLOAD,
218 USB_DIR_OUT | USB_TYPE_VENDOR,
219 code_offset, 0, p, transfer_size, 1000 /* ms */);
222 "USB control request for firmware upload"
223 " failed. Error number %d\n", r);
226 transfer_size = r & ~1;
228 size -= transfer_size;
229 data += transfer_size;
230 code_offset += transfer_size/sizeof(u16);
233 if (flags & REBOOT) {
236 r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
237 USB_REQ_FIRMWARE_CONFIRM,
238 USB_DIR_IN | USB_TYPE_VENDOR,
239 0, 0, &ret, sizeof(ret), 5000 /* ms */);
240 if (r != sizeof(ret)) {
242 "control request firmeware confirmation failed."
243 " Return value %d\n", r);
250 "Internal error while downloading."
251 " Firmware confirm return value %#04x\n",
256 dev_dbg_f(&udev->dev, "firmware confirm return value %#04x\n",
266 static u16 get_word(const void *data, u16 offset)
268 const __le16 *p = data;
269 return le16_to_cpu(p[offset]);
272 static char *get_fw_name(char *buffer, size_t size, u8 device_type,
275 scnprintf(buffer, size, "%s%s",
276 device_type == DEVICE_ZD1211B ?
277 FW_ZD1211B_PREFIX : FW_ZD1211_PREFIX,
282 static int handle_version_mismatch(struct usb_device *udev, u8 device_type,
283 const struct firmware *ub_fw)
285 const struct firmware *ur_fw = NULL;
290 r = request_fw_file(&ur_fw,
291 get_fw_name(fw_name, sizeof(fw_name), device_type, "ur"),
296 r = upload_code(udev, ur_fw->data, ur_fw->size, FW_START_OFFSET,
301 offset = ((EEPROM_REGS_OFFSET + EEPROM_REGS_SIZE) * sizeof(u16));
302 r = upload_code(udev, ub_fw->data + offset, ub_fw->size - offset,
303 E2P_BASE_OFFSET + EEPROM_REGS_SIZE, REBOOT);
305 /* At this point, the vendor driver downloads the whole firmware
306 * image, hacks around with version IDs, and uploads it again,
307 * completely overwriting the boot code. We do not do this here as
308 * it is not required on any tested devices, and it is suspected to
311 release_firmware(ur_fw);
315 static int upload_firmware(struct usb_device *udev, u8 device_type)
320 const struct firmware *ub_fw = NULL;
321 const struct firmware *uph_fw = NULL;
324 bcdDevice = get_bcdDevice(udev);
326 r = request_fw_file(&ub_fw,
327 get_fw_name(fw_name, sizeof(fw_name), device_type, "ub"),
332 fw_bcdDevice = get_word(ub_fw->data, EEPROM_REGS_OFFSET);
334 if (fw_bcdDevice != bcdDevice) {
336 "firmware version %#06x and device bootcode version "
337 "%#06x differ\n", fw_bcdDevice, bcdDevice);
338 if (bcdDevice <= 0x4313)
339 dev_warn(&udev->dev, "device has old bootcode, please "
340 "report success or failure\n");
342 r = handle_version_mismatch(udev, device_type, ub_fw);
346 dev_dbg_f(&udev->dev,
347 "firmware device id %#06x is equal to the "
348 "actual device id\n", fw_bcdDevice);
352 r = request_fw_file(&uph_fw,
353 get_fw_name(fw_name, sizeof(fw_name), device_type, "uphr"),
358 r = upload_code(udev, uph_fw->data, uph_fw->size, FW_START_OFFSET,
362 "Could not upload firmware code uph. Error number %d\n",
368 release_firmware(ub_fw);
369 release_firmware(uph_fw);
373 #define urb_dev(urb) (&(urb)->dev->dev)
375 static inline void handle_regs_int(struct urb *urb)
377 struct zd_usb *usb = urb->context;
378 struct zd_usb_interrupt *intr = &usb->intr;
381 ZD_ASSERT(in_interrupt());
382 spin_lock(&intr->lock);
384 if (intr->read_regs_enabled) {
385 intr->read_regs.length = len = urb->actual_length;
387 if (len > sizeof(intr->read_regs.buffer))
388 len = sizeof(intr->read_regs.buffer);
389 memcpy(intr->read_regs.buffer, urb->transfer_buffer, len);
390 intr->read_regs_enabled = 0;
391 complete(&intr->read_regs.completion);
395 dev_dbg_f(urb_dev(urb), "regs interrupt ignored\n");
397 spin_unlock(&intr->lock);
400 static inline void handle_retry_failed_int(struct urb *urb)
402 dev_dbg_f(urb_dev(urb), "retry failed interrupt\n");
406 static void int_urb_complete(struct urb *urb)
409 struct usb_int_header *hdr;
411 switch (urb->status) {
425 if (urb->actual_length < sizeof(hdr)) {
426 dev_dbg_f(urb_dev(urb), "error: urb %p to small\n", urb);
430 hdr = urb->transfer_buffer;
431 if (hdr->type != USB_INT_TYPE) {
432 dev_dbg_f(urb_dev(urb), "error: urb %p wrong type\n", urb);
437 case USB_INT_ID_REGS:
438 handle_regs_int(urb);
440 case USB_INT_ID_RETRY_FAILED:
441 handle_retry_failed_int(urb);
444 dev_dbg_f(urb_dev(urb), "error: urb %p unknown id %x\n", urb,
445 (unsigned int)hdr->id);
450 r = usb_submit_urb(urb, GFP_ATOMIC);
452 dev_dbg_f(urb_dev(urb), "resubmit urb %p\n", urb);
457 kfree(urb->transfer_buffer);
460 static inline int int_urb_interval(struct usb_device *udev)
462 switch (udev->speed) {
473 static inline int usb_int_enabled(struct zd_usb *usb)
476 struct zd_usb_interrupt *intr = &usb->intr;
479 spin_lock_irqsave(&intr->lock, flags);
481 spin_unlock_irqrestore(&intr->lock, flags);
485 int zd_usb_enable_int(struct zd_usb *usb)
488 struct usb_device *udev;
489 struct zd_usb_interrupt *intr = &usb->intr;
490 void *transfer_buffer = NULL;
493 dev_dbg_f(zd_usb_dev(usb), "\n");
495 urb = usb_alloc_urb(0, GFP_NOFS);
501 ZD_ASSERT(!irqs_disabled());
502 spin_lock_irq(&intr->lock);
504 spin_unlock_irq(&intr->lock);
509 spin_unlock_irq(&intr->lock);
511 /* TODO: make it a DMA buffer */
513 transfer_buffer = kmalloc(USB_MAX_EP_INT_BUFFER, GFP_NOFS);
514 if (!transfer_buffer) {
515 dev_dbg_f(zd_usb_dev(usb),
516 "couldn't allocate transfer_buffer\n");
517 goto error_set_urb_null;
520 udev = zd_usb_to_usbdev(usb);
521 usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, EP_INT_IN),
522 transfer_buffer, USB_MAX_EP_INT_BUFFER,
523 int_urb_complete, usb,
526 dev_dbg_f(zd_usb_dev(usb), "submit urb %p\n", intr->urb);
527 r = usb_submit_urb(urb, GFP_NOFS);
529 dev_dbg_f(zd_usb_dev(usb),
530 "Couldn't submit urb. Error number %d\n", r);
536 kfree(transfer_buffer);
538 spin_lock_irq(&intr->lock);
540 spin_unlock_irq(&intr->lock);
547 void zd_usb_disable_int(struct zd_usb *usb)
550 struct zd_usb_interrupt *intr = &usb->intr;
553 spin_lock_irqsave(&intr->lock, flags);
556 spin_unlock_irqrestore(&intr->lock, flags);
560 spin_unlock_irqrestore(&intr->lock, flags);
563 dev_dbg_f(zd_usb_dev(usb), "urb %p killed\n", urb);
567 static void handle_rx_packet(struct zd_usb *usb, const u8 *buffer,
571 struct zd_mac *mac = zd_usb_to_mac(usb);
572 const struct rx_length_info *length_info;
574 if (length < sizeof(struct rx_length_info)) {
575 /* It's not a complete packet anyhow. */
578 length_info = (struct rx_length_info *)
579 (buffer + length - sizeof(struct rx_length_info));
581 /* It might be that three frames are merged into a single URB
582 * transaction. We have to check for the length info tag.
584 * While testing we discovered that length_info might be unaligned,
585 * because if USB transactions are merged, the last packet will not
586 * be padded. Unaligned access might also happen if the length_info
587 * structure is not present.
589 if (get_unaligned(&length_info->tag) == cpu_to_le16(RX_LENGTH_INFO_TAG))
591 unsigned int l, k, n;
592 for (i = 0, l = 0;; i++) {
593 k = le16_to_cpu(get_unaligned(&length_info->length[i]));
597 zd_mac_rx(mac, buffer+l, k);
603 zd_mac_rx(mac, buffer, length);
607 static void rx_urb_complete(struct urb *urb)
610 struct zd_usb_rx *rx;
614 switch (urb->status) {
625 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
629 buffer = urb->transfer_buffer;
630 length = urb->actual_length;
634 if (length%rx->usb_packet_size > rx->usb_packet_size-4) {
635 /* If there is an old first fragment, we don't care. */
636 dev_dbg_f(urb_dev(urb), "*** first fragment ***\n");
637 ZD_ASSERT(length <= ARRAY_SIZE(rx->fragment));
638 spin_lock(&rx->lock);
639 memcpy(rx->fragment, buffer, length);
640 rx->fragment_length = length;
641 spin_unlock(&rx->lock);
645 spin_lock(&rx->lock);
646 if (rx->fragment_length > 0) {
647 /* We are on a second fragment, we believe */
648 ZD_ASSERT(length + rx->fragment_length <=
649 ARRAY_SIZE(rx->fragment));
650 dev_dbg_f(urb_dev(urb), "*** second fragment ***\n");
651 memcpy(rx->fragment+rx->fragment_length, buffer, length);
652 handle_rx_packet(usb, rx->fragment,
653 rx->fragment_length + length);
654 rx->fragment_length = 0;
655 spin_unlock(&rx->lock);
657 spin_unlock(&rx->lock);
658 handle_rx_packet(usb, buffer, length);
662 usb_submit_urb(urb, GFP_ATOMIC);
665 static struct urb *alloc_urb(struct zd_usb *usb)
667 struct usb_device *udev = zd_usb_to_usbdev(usb);
671 urb = usb_alloc_urb(0, GFP_NOFS);
674 buffer = usb_buffer_alloc(udev, USB_MAX_RX_SIZE, GFP_NOFS,
681 usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, EP_DATA_IN),
682 buffer, USB_MAX_RX_SIZE,
683 rx_urb_complete, usb);
684 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
689 static void free_urb(struct urb *urb)
693 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
694 urb->transfer_buffer, urb->transfer_dma);
698 int zd_usb_enable_rx(struct zd_usb *usb)
701 struct zd_usb_rx *rx = &usb->rx;
704 dev_dbg_f(zd_usb_dev(usb), "\n");
707 urbs = kcalloc(URBS_COUNT, sizeof(struct urb *), GFP_NOFS);
710 for (i = 0; i < URBS_COUNT; i++) {
711 urbs[i] = alloc_urb(usb);
716 ZD_ASSERT(!irqs_disabled());
717 spin_lock_irq(&rx->lock);
719 spin_unlock_irq(&rx->lock);
724 rx->urbs_count = URBS_COUNT;
725 spin_unlock_irq(&rx->lock);
727 for (i = 0; i < URBS_COUNT; i++) {
728 r = usb_submit_urb(urbs[i], GFP_NOFS);
735 for (i = 0; i < URBS_COUNT; i++) {
736 usb_kill_urb(urbs[i]);
738 spin_lock_irq(&rx->lock);
741 spin_unlock_irq(&rx->lock);
744 for (i = 0; i < URBS_COUNT; i++)
750 void zd_usb_disable_rx(struct zd_usb *usb)
756 struct zd_usb_rx *rx = &usb->rx;
758 spin_lock_irqsave(&rx->lock, flags);
760 count = rx->urbs_count;
761 spin_unlock_irqrestore(&rx->lock, flags);
765 for (i = 0; i < count; i++) {
766 usb_kill_urb(urbs[i]);
771 spin_lock_irqsave(&rx->lock, flags);
774 spin_unlock_irqrestore(&rx->lock, flags);
777 static void tx_urb_complete(struct urb *urb)
781 switch (urb->status) {
790 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
793 dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
797 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
798 urb->transfer_buffer, urb->transfer_dma);
802 r = usb_submit_urb(urb, GFP_ATOMIC);
804 dev_dbg_f(urb_dev(urb), "error resubmit urb %p %d\n", urb, r);
809 /* Puts the frame on the USB endpoint. It doesn't wait for
810 * completion. The frame must contain the control set.
812 int zd_usb_tx(struct zd_usb *usb, const u8 *frame, unsigned int length)
815 struct usb_device *udev = zd_usb_to_usbdev(usb);
819 urb = usb_alloc_urb(0, GFP_ATOMIC);
825 buffer = usb_buffer_alloc(zd_usb_to_usbdev(usb), length, GFP_ATOMIC,
831 memcpy(buffer, frame, length);
833 usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, EP_DATA_OUT),
834 buffer, length, tx_urb_complete, NULL);
835 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
837 r = usb_submit_urb(urb, GFP_ATOMIC);
842 usb_buffer_free(zd_usb_to_usbdev(usb), length, buffer,
850 static inline void init_usb_interrupt(struct zd_usb *usb)
852 struct zd_usb_interrupt *intr = &usb->intr;
854 spin_lock_init(&intr->lock);
855 intr->interval = int_urb_interval(zd_usb_to_usbdev(usb));
856 init_completion(&intr->read_regs.completion);
857 intr->read_regs.cr_int_addr = cpu_to_le16(usb_addr(usb, CR_INTERRUPT));
860 static inline void init_usb_rx(struct zd_usb *usb)
862 struct zd_usb_rx *rx = &usb->rx;
863 spin_lock_init(&rx->lock);
864 if (interface_to_usbdev(usb->intf)->speed == USB_SPEED_HIGH) {
865 rx->usb_packet_size = 512;
867 rx->usb_packet_size = 64;
869 ZD_ASSERT(rx->fragment_length == 0);
872 static inline void init_usb_tx(struct zd_usb *usb)
874 /* FIXME: at this point we will allocate a fixed number of urb's for
875 * use in a cyclic scheme */
878 void zd_usb_init(struct zd_usb *usb, struct net_device *netdev,
879 struct usb_interface *intf)
881 memset(usb, 0, sizeof(*usb));
882 usb->intf = usb_get_intf(intf);
883 usb_set_intfdata(usb->intf, netdev);
884 init_usb_interrupt(usb);
889 int zd_usb_init_hw(struct zd_usb *usb)
892 struct zd_chip *chip = zd_usb_to_chip(usb);
894 ZD_ASSERT(mutex_is_locked(&chip->mutex));
895 r = zd_ioread16_locked(chip, &usb->fw_base_offset,
896 USB_REG((u16)FW_BASE_ADDR_OFFSET));
899 dev_dbg_f(zd_usb_dev(usb), "fw_base_offset: %#06hx\n",
900 usb->fw_base_offset);
905 void zd_usb_clear(struct zd_usb *usb)
907 usb_set_intfdata(usb->intf, NULL);
908 usb_put_intf(usb->intf);
909 ZD_MEMCLEAR(usb, sizeof(*usb));
910 /* FIXME: usb_interrupt, usb_tx, usb_rx? */
913 static const char *speed(enum usb_device_speed speed)
923 return "unknown speed";
927 static int scnprint_id(struct usb_device *udev, char *buffer, size_t size)
929 return scnprintf(buffer, size, "%04hx:%04hx v%04hx %s",
930 le16_to_cpu(udev->descriptor.idVendor),
931 le16_to_cpu(udev->descriptor.idProduct),
936 int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size)
938 struct usb_device *udev = interface_to_usbdev(usb->intf);
939 return scnprint_id(udev, buffer, size);
943 static void print_id(struct usb_device *udev)
947 scnprint_id(udev, buffer, sizeof(buffer));
948 buffer[sizeof(buffer)-1] = 0;
949 dev_dbg_f(&udev->dev, "%s\n", buffer);
952 #define print_id(udev) do { } while (0)
955 static int eject_installer(struct usb_interface *intf)
957 struct usb_device *udev = interface_to_usbdev(intf);
958 struct usb_host_interface *iface_desc = &intf->altsetting[0];
959 struct usb_endpoint_descriptor *endpoint;
964 /* Find bulk out endpoint */
965 endpoint = &iface_desc->endpoint[1].desc;
966 if ((endpoint->bEndpointAddress & USB_TYPE_MASK) == USB_DIR_OUT &&
967 (endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
968 USB_ENDPOINT_XFER_BULK) {
969 bulk_out_ep = endpoint->bEndpointAddress;
972 "zd1211rw: Could not find bulk out endpoint\n");
976 cmd = kzalloc(31, GFP_KERNEL);
980 /* USB bulk command block */
981 cmd[0] = 0x55; /* bulk command signature */
982 cmd[1] = 0x53; /* bulk command signature */
983 cmd[2] = 0x42; /* bulk command signature */
984 cmd[3] = 0x43; /* bulk command signature */
985 cmd[14] = 6; /* command length */
987 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
988 cmd[19] = 0x2; /* eject disc */
990 dev_info(&udev->dev, "Ejecting virtual installer media...\n");
991 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
992 cmd, 31, NULL, 2000);
997 /* At this point, the device disconnects and reconnects with the real
1000 usb_set_intfdata(intf, NULL);
1004 static int probe(struct usb_interface *intf, const struct usb_device_id *id)
1007 struct usb_device *udev = interface_to_usbdev(intf);
1008 struct net_device *netdev = NULL;
1012 if (id->driver_info & DEVICE_INSTALLER)
1013 return eject_installer(intf);
1015 switch (udev->speed) {
1017 case USB_SPEED_FULL:
1018 case USB_SPEED_HIGH:
1021 dev_dbg_f(&intf->dev, "Unknown USB speed\n");
1026 netdev = zd_netdev_alloc(intf);
1027 if (netdev == NULL) {
1032 r = upload_firmware(udev, id->driver_info);
1035 "couldn't load firmware. Error number %d\n", r);
1039 r = usb_reset_configuration(udev);
1041 dev_dbg_f(&intf->dev,
1042 "couldn't reset configuration. Error number %d\n", r);
1046 /* At this point the interrupt endpoint is not generally enabled. We
1047 * save the USB bandwidth until the network device is opened. But
1048 * notify that the initialization of the MAC will require the
1049 * interrupts to be temporary enabled.
1051 r = zd_mac_init_hw(zd_netdev_mac(netdev), id->driver_info);
1053 dev_dbg_f(&intf->dev,
1054 "couldn't initialize mac. Error number %d\n", r);
1058 r = register_netdev(netdev);
1060 dev_dbg_f(&intf->dev,
1061 "couldn't register netdev. Error number %d\n", r);
1065 dev_dbg_f(&intf->dev, "successful\n");
1066 dev_info(&intf->dev,"%s\n", netdev->name);
1069 usb_reset_device(interface_to_usbdev(intf));
1070 zd_netdev_free(netdev);
1074 static void disconnect(struct usb_interface *intf)
1076 struct net_device *netdev = zd_intf_to_netdev(intf);
1077 struct zd_mac *mac = zd_netdev_mac(netdev);
1078 struct zd_usb *usb = &mac->chip.usb;
1080 /* Either something really bad happened, or we're just dealing with
1081 * a DEVICE_INSTALLER. */
1085 dev_dbg_f(zd_usb_dev(usb), "\n");
1087 zd_netdev_disconnect(netdev);
1089 /* Just in case something has gone wrong! */
1090 zd_usb_disable_rx(usb);
1091 zd_usb_disable_int(usb);
1093 /* If the disconnect has been caused by a removal of the
1094 * driver module, the reset allows reloading of the driver. If the
1095 * reset will not be executed here, the upload of the firmware in the
1096 * probe function caused by the reloading of the driver will fail.
1098 usb_reset_device(interface_to_usbdev(intf));
1100 zd_netdev_free(netdev);
1101 dev_dbg(&intf->dev, "disconnected\n");
1104 static struct usb_driver driver = {
1106 .id_table = usb_ids,
1108 .disconnect = disconnect,
1111 struct workqueue_struct *zd_workqueue;
1113 static int __init usb_init(void)
1117 pr_debug("usb_init()\n");
1119 zd_workqueue = create_singlethread_workqueue(driver.name);
1120 if (zd_workqueue == NULL) {
1121 printk(KERN_ERR "%s: couldn't create workqueue\n", driver.name);
1125 r = usb_register(&driver);
1127 printk(KERN_ERR "usb_register() failed. Error number %d\n", r);
1131 pr_debug("zd1211rw initialized\n");
1135 static void __exit usb_exit(void)
1137 pr_debug("usb_exit()\n");
1138 usb_deregister(&driver);
1139 destroy_workqueue(zd_workqueue);
1142 module_init(usb_init);
1143 module_exit(usb_exit);
1145 static int usb_int_regs_length(unsigned int count)
1147 return sizeof(struct usb_int_regs) + count * sizeof(struct reg_data);
1150 static void prepare_read_regs_int(struct zd_usb *usb)
1152 struct zd_usb_interrupt *intr = &usb->intr;
1154 spin_lock_irq(&intr->lock);
1155 intr->read_regs_enabled = 1;
1156 INIT_COMPLETION(intr->read_regs.completion);
1157 spin_unlock_irq(&intr->lock);
1160 static void disable_read_regs_int(struct zd_usb *usb)
1162 struct zd_usb_interrupt *intr = &usb->intr;
1164 spin_lock_irq(&intr->lock);
1165 intr->read_regs_enabled = 0;
1166 spin_unlock_irq(&intr->lock);
1169 static int get_results(struct zd_usb *usb, u16 *values,
1170 struct usb_req_read_regs *req, unsigned int count)
1174 struct zd_usb_interrupt *intr = &usb->intr;
1175 struct read_regs_int *rr = &intr->read_regs;
1176 struct usb_int_regs *regs = (struct usb_int_regs *)rr->buffer;
1178 spin_lock_irq(&intr->lock);
1181 /* The created block size seems to be larger than expected.
1182 * However results appear to be correct.
1184 if (rr->length < usb_int_regs_length(count)) {
1185 dev_dbg_f(zd_usb_dev(usb),
1186 "error: actual length %d less than expected %d\n",
1187 rr->length, usb_int_regs_length(count));
1190 if (rr->length > sizeof(rr->buffer)) {
1191 dev_dbg_f(zd_usb_dev(usb),
1192 "error: actual length %d exceeds buffer size %zu\n",
1193 rr->length, sizeof(rr->buffer));
1197 for (i = 0; i < count; i++) {
1198 struct reg_data *rd = ®s->regs[i];
1199 if (rd->addr != req->addr[i]) {
1200 dev_dbg_f(zd_usb_dev(usb),
1201 "rd[%d] addr %#06hx expected %#06hx\n", i,
1202 le16_to_cpu(rd->addr),
1203 le16_to_cpu(req->addr[i]));
1206 values[i] = le16_to_cpu(rd->value);
1211 spin_unlock_irq(&intr->lock);
1215 int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
1216 const zd_addr_t *addresses, unsigned int count)
1219 int i, req_len, actual_req_len;
1220 struct usb_device *udev;
1221 struct usb_req_read_regs *req = NULL;
1222 unsigned long timeout;
1225 dev_dbg_f(zd_usb_dev(usb), "error: count is zero\n");
1228 if (count > USB_MAX_IOREAD16_COUNT) {
1229 dev_dbg_f(zd_usb_dev(usb),
1230 "error: count %u exceeds possible max %u\n",
1231 count, USB_MAX_IOREAD16_COUNT);
1235 dev_dbg_f(zd_usb_dev(usb),
1236 "error: io in atomic context not supported\n");
1237 return -EWOULDBLOCK;
1239 if (!usb_int_enabled(usb)) {
1240 dev_dbg_f(zd_usb_dev(usb),
1241 "error: usb interrupt not enabled\n");
1242 return -EWOULDBLOCK;
1245 req_len = sizeof(struct usb_req_read_regs) + count * sizeof(__le16);
1246 req = kmalloc(req_len, GFP_NOFS);
1249 req->id = cpu_to_le16(USB_REQ_READ_REGS);
1250 for (i = 0; i < count; i++)
1251 req->addr[i] = cpu_to_le16(usb_addr(usb, addresses[i]));
1253 udev = zd_usb_to_usbdev(usb);
1254 prepare_read_regs_int(usb);
1255 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1256 req, req_len, &actual_req_len, 1000 /* ms */);
1258 dev_dbg_f(zd_usb_dev(usb),
1259 "error in usb_bulk_msg(). Error number %d\n", r);
1262 if (req_len != actual_req_len) {
1263 dev_dbg_f(zd_usb_dev(usb), "error in usb_bulk_msg()\n"
1264 " req_len %d != actual_req_len %d\n",
1265 req_len, actual_req_len);
1270 timeout = wait_for_completion_timeout(&usb->intr.read_regs.completion,
1271 msecs_to_jiffies(1000));
1273 disable_read_regs_int(usb);
1274 dev_dbg_f(zd_usb_dev(usb), "read timed out\n");
1279 r = get_results(usb, values, req, count);
1285 int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
1289 struct usb_device *udev;
1290 struct usb_req_write_regs *req = NULL;
1291 int i, req_len, actual_req_len;
1295 if (count > USB_MAX_IOWRITE16_COUNT) {
1296 dev_dbg_f(zd_usb_dev(usb),
1297 "error: count %u exceeds possible max %u\n",
1298 count, USB_MAX_IOWRITE16_COUNT);
1302 dev_dbg_f(zd_usb_dev(usb),
1303 "error: io in atomic context not supported\n");
1304 return -EWOULDBLOCK;
1307 req_len = sizeof(struct usb_req_write_regs) +
1308 count * sizeof(struct reg_data);
1309 req = kmalloc(req_len, GFP_NOFS);
1313 req->id = cpu_to_le16(USB_REQ_WRITE_REGS);
1314 for (i = 0; i < count; i++) {
1315 struct reg_data *rw = &req->reg_writes[i];
1316 rw->addr = cpu_to_le16(usb_addr(usb, ioreqs[i].addr));
1317 rw->value = cpu_to_le16(ioreqs[i].value);
1320 udev = zd_usb_to_usbdev(usb);
1321 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1322 req, req_len, &actual_req_len, 1000 /* ms */);
1324 dev_dbg_f(zd_usb_dev(usb),
1325 "error in usb_bulk_msg(). Error number %d\n", r);
1328 if (req_len != actual_req_len) {
1329 dev_dbg_f(zd_usb_dev(usb),
1330 "error in usb_bulk_msg()"
1331 " req_len %d != actual_req_len %d\n",
1332 req_len, actual_req_len);
1337 /* FALL-THROUGH with r == 0 */
1343 int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits)
1346 struct usb_device *udev;
1347 struct usb_req_rfwrite *req = NULL;
1348 int i, req_len, actual_req_len;
1349 u16 bit_value_template;
1352 dev_dbg_f(zd_usb_dev(usb),
1353 "error: io in atomic context not supported\n");
1354 return -EWOULDBLOCK;
1356 if (bits < USB_MIN_RFWRITE_BIT_COUNT) {
1357 dev_dbg_f(zd_usb_dev(usb),
1358 "error: bits %d are smaller than"
1359 " USB_MIN_RFWRITE_BIT_COUNT %d\n",
1360 bits, USB_MIN_RFWRITE_BIT_COUNT);
1363 if (bits > USB_MAX_RFWRITE_BIT_COUNT) {
1364 dev_dbg_f(zd_usb_dev(usb),
1365 "error: bits %d exceed USB_MAX_RFWRITE_BIT_COUNT %d\n",
1366 bits, USB_MAX_RFWRITE_BIT_COUNT);
1370 if (value & (~0UL << bits)) {
1371 dev_dbg_f(zd_usb_dev(usb),
1372 "error: value %#09x has bits >= %d set\n",
1378 dev_dbg_f(zd_usb_dev(usb), "value %#09x bits %d\n", value, bits);
1380 r = zd_usb_ioread16(usb, &bit_value_template, CR203);
1382 dev_dbg_f(zd_usb_dev(usb),
1383 "error %d: Couldn't read CR203\n", r);
1386 bit_value_template &= ~(RF_IF_LE|RF_CLK|RF_DATA);
1388 req_len = sizeof(struct usb_req_rfwrite) + bits * sizeof(__le16);
1389 req = kmalloc(req_len, GFP_NOFS);
1393 req->id = cpu_to_le16(USB_REQ_WRITE_RF);
1394 /* 1: 3683a, but not used in ZYDAS driver */
1395 req->value = cpu_to_le16(2);
1396 req->bits = cpu_to_le16(bits);
1398 for (i = 0; i < bits; i++) {
1399 u16 bv = bit_value_template;
1400 if (value & (1 << (bits-1-i)))
1402 req->bit_values[i] = cpu_to_le16(bv);
1405 udev = zd_usb_to_usbdev(usb);
1406 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
1407 req, req_len, &actual_req_len, 1000 /* ms */);
1409 dev_dbg_f(zd_usb_dev(usb),
1410 "error in usb_bulk_msg(). Error number %d\n", r);
1413 if (req_len != actual_req_len) {
1414 dev_dbg_f(zd_usb_dev(usb), "error in usb_bulk_msg()"
1415 " req_len %d != actual_req_len %d\n",
1416 req_len, actual_req_len);
1421 /* FALL-THROUGH with r == 0 */