Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

19 files changed, 10833 insertions, 0 deletions

diff --git a/drivers/net/wireless/zydas/Kconfig b/drivers/net/wireless/zydas/Kconfig
new file mode 100644
index 000000000..08574433d
--- /dev/null
+++ b/drivers/net/wireless/zydas/Kconfig
@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config WLAN_VENDOR_ZYDAS
+	bool "ZyDAS devices"
+	default y
+	help
+	  If you have a wireless card belonging to this class, say Y.
+
+	  Note that the answer to this question doesn't directly affect the
+	  kernel: saying N will just cause the configurator to skip all the
+	  questions about these cards. If you say Y, you will be asked for
+	  your specific card in the following questions.
+
+if WLAN_VENDOR_ZYDAS
+
+config USB_ZD1201
+	tristate "USB ZD1201 based Wireless device support"
+	depends on CFG80211 && USB
+	select WIRELESS_EXT
+	select WEXT_PRIV
+	select FW_LOADER
+	help
+	  Say Y if you want to use wireless LAN adapters based on the ZyDAS
+	  ZD1201 chip.
+
+	  This driver makes the adapter appear as a normal Ethernet interface,
+	  typically on wlan0.
+
+	  The zd1201 device requires external firmware to be loaded.
+	  This can be found at http://linux-lc100020.sourceforge.net/
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called zd1201.
+
+source "drivers/net/wireless/zydas/zd1211rw/Kconfig"
+
+endif # WLAN_VENDOR_ZYDAS
diff --git a/drivers/net/wireless/zydas/Makefile b/drivers/net/wireless/zydas/Makefile
new file mode 100644
index 000000000..c70003d30
--- /dev/null
+++ b/drivers/net/wireless/zydas/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_ZD1211RW)		+= zd1211rw/
+
+obj-$(CONFIG_USB_ZD1201)	+= zd1201.o
diff --git a/drivers/net/wireless/zydas/zd1201.c b/drivers/net/wireless/zydas/zd1201.c
new file mode 100644
index 000000000..82bc0d442
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1201.c
@@ -0,0 +1,1905 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *	Driver for ZyDAS zd1201 based wireless USB devices.
+ *
+ *	Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
+ *
+ *	Parts of this driver have been derived from a wlan-ng version
+ *	modified by ZyDAS. They also made documentation available, thanks!
+ *	Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/slab.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/wireless.h>
+#include <net/cfg80211.h>
+#include <net/iw_handler.h>
+#include <linux/string.h>
+#include <linux/if_arp.h>
+#include <linux/firmware.h>
+#include "zd1201.h"
+
+static const struct usb_device_id zd1201_table[] = {
+	{USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
+	{USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
+	{USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
+	{USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
+	{USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
+	{USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
+	{}
+};
+
+static int ap;	/* Are we an AP or a normal station? */
+
+#define ZD1201_VERSION	"0.15"
+
+MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
+MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
+MODULE_VERSION(ZD1201_VERSION);
+MODULE_LICENSE("GPL");
+module_param(ap, int, 0);
+MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
+MODULE_DEVICE_TABLE(usb, zd1201_table);
+
+
+static int zd1201_fw_upload(struct usb_device *dev, int apfw)
+{
+	const struct firmware *fw_entry;
+	const char *data;
+	unsigned long len;
+	int err;
+	unsigned char ret;
+	char *buf;
+	char *fwfile;
+
+	if (apfw)
+		fwfile = "zd1201-ap.fw";
+	else
+		fwfile = "zd1201.fw";
+
+	err = request_firmware(&fw_entry, fwfile, &dev->dev);
+	if (err) {
+		dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
+		dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
+		dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
+		return err;
+	}
+
+	data = fw_entry->data;
+        len = fw_entry->size;
+
+	buf = kmalloc(1024, GFP_ATOMIC);
+	if (!buf) {
+		err = -ENOMEM;
+		goto exit;
+	}
+	
+	while (len > 0) {
+		int translen = (len > 1024) ? 1024 : len;
+		memcpy(buf, data, translen);
+
+		err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
+		    USB_DIR_OUT | 0x40, 0, 0, buf, translen,
+		    ZD1201_FW_TIMEOUT);
+		if (err < 0)
+			goto exit;
+
+		len -= translen;
+		data += translen;
+	}
+                                        
+	err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
+	    USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
+	if (err < 0)
+		goto exit;
+
+	err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
+	    USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
+	if (err < 0)
+		goto exit;
+
+	memcpy(&ret, buf, sizeof(ret));
+
+	if (ret & 0x80) {
+		err = -EIO;
+		goto exit;
+	}
+
+	err = 0;
+exit:
+	kfree(buf);
+	release_firmware(fw_entry);
+	return err;
+}
+
+MODULE_FIRMWARE("zd1201-ap.fw");
+MODULE_FIRMWARE("zd1201.fw");
+
+static void zd1201_usbfree(struct urb *urb)
+{
+	struct zd1201 *zd = urb->context;
+
+	switch(urb->status) {
+		case -EILSEQ:
+		case -ENODEV:
+		case -ETIME:
+		case -ENOENT:
+		case -EPIPE:
+		case -EOVERFLOW:
+		case -ESHUTDOWN:
+			dev_warn(&zd->usb->dev, "%s: urb failed: %d\n", 
+			    zd->dev->name, urb->status);
+	}
+
+	kfree(urb->transfer_buffer);
+	usb_free_urb(urb);
+}
+
+/* cmdreq message: 
+	u32 type
+	u16 cmd
+	u16 parm0
+	u16 parm1
+	u16 parm2
+	u8  pad[4]
+
+	total: 4 + 2 + 2 + 2 + 2 + 4 = 16
+*/
+static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
+			int parm1, int parm2)
+{
+	unsigned char *command;
+	int ret;
+	struct urb *urb;
+
+	command = kmalloc(16, GFP_ATOMIC);
+	if (!command)
+		return -ENOMEM;
+
+	*((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
+	*((__le16*)&command[4]) = cpu_to_le16(cmd);
+	*((__le16*)&command[6]) = cpu_to_le16(parm0);
+	*((__le16*)&command[8]) = cpu_to_le16(parm1);
+	*((__le16*)&command[10])= cpu_to_le16(parm2);
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		kfree(command);
+		return -ENOMEM;
+	}
+	usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
+			  command, 16, zd1201_usbfree, zd);
+	ret = usb_submit_urb(urb, GFP_ATOMIC);
+	if (ret) {
+		kfree(command);
+		usb_free_urb(urb);
+	}
+
+	return ret;
+}
+
+/* Callback after sending out a packet */
+static void zd1201_usbtx(struct urb *urb)
+{
+	struct zd1201 *zd = urb->context;
+	netif_wake_queue(zd->dev);
+}
+
+/* Incoming data */
+static void zd1201_usbrx(struct urb *urb)
+{
+	struct zd1201 *zd = urb->context;
+	int free = 0;
+	unsigned char *data = urb->transfer_buffer;
+	struct sk_buff *skb;
+	unsigned char type;
+
+	if (!zd)
+		return;
+
+	switch(urb->status) {
+		case -EILSEQ:
+		case -ENODEV:
+		case -ETIME:
+		case -ENOENT:
+		case -EPIPE:
+		case -EOVERFLOW:
+		case -ESHUTDOWN:
+			dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
+			    zd->dev->name, urb->status);
+			free = 1;
+			goto exit;
+	}
+	
+	if (urb->status != 0 || urb->actual_length == 0)
+		goto resubmit;
+
+	type = data[0];
+	if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
+		memcpy(zd->rxdata, data, urb->actual_length);
+		zd->rxlen = urb->actual_length;
+		zd->rxdatas = 1;
+		wake_up(&zd->rxdataq);
+	}
+	/* Info frame */
+	if (type == ZD1201_PACKET_INQUIRE) {
+		int i = 0;
+		unsigned short infotype, copylen;
+		infotype = le16_to_cpu(*(__le16*)&data[6]);
+
+		if (infotype == ZD1201_INF_LINKSTATUS) {
+			short linkstatus;
+
+			linkstatus = le16_to_cpu(*(__le16*)&data[8]);
+			switch(linkstatus) {
+				case 1:
+					netif_carrier_on(zd->dev);
+					break;
+				case 2:
+					netif_carrier_off(zd->dev);
+					break;
+				case 3:
+					netif_carrier_off(zd->dev);
+					break;
+				case 4:
+					netif_carrier_on(zd->dev);
+					break;
+				default:
+					netif_carrier_off(zd->dev);
+			}
+			goto resubmit;
+		}
+		if (infotype == ZD1201_INF_ASSOCSTATUS) {
+			short status = le16_to_cpu(*(__le16*)(data+8));
+			int event;
+			union iwreq_data wrqu;
+
+			switch (status) {
+				case ZD1201_ASSOCSTATUS_STAASSOC:
+				case ZD1201_ASSOCSTATUS_REASSOC:
+					event = IWEVREGISTERED;
+					break;
+				case ZD1201_ASSOCSTATUS_DISASSOC:
+				case ZD1201_ASSOCSTATUS_ASSOCFAIL:
+				case ZD1201_ASSOCSTATUS_AUTHFAIL:
+				default:
+					event = IWEVEXPIRED;
+			}
+			memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
+			wrqu.addr.sa_family = ARPHRD_ETHER;
+
+			/* Send event to user space */
+			wireless_send_event(zd->dev, event, &wrqu, NULL);
+
+			goto resubmit;
+		}
+		if (infotype == ZD1201_INF_AUTHREQ) {
+			union iwreq_data wrqu;
+
+			memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
+			wrqu.addr.sa_family = ARPHRD_ETHER;
+			/* There isn't a event that trully fits this request.
+			   We assume that userspace will be smart enough to
+			   see a new station being expired and sends back a
+			   authstation ioctl to authorize it. */
+			wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
+			goto resubmit;
+		}
+		/* Other infotypes are handled outside this handler */
+		zd->rxlen = 0;
+		while (i < urb->actual_length) {
+			copylen = le16_to_cpu(*(__le16*)&data[i+2]);
+			/* Sanity check, sometimes we get junk */
+			if (copylen+zd->rxlen > sizeof(zd->rxdata))
+				break;
+			memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
+			zd->rxlen += copylen;
+			i += 64;
+		}
+		if (i >= urb->actual_length) {
+			zd->rxdatas = 1;
+			wake_up(&zd->rxdataq);
+		}
+		goto  resubmit;
+	}
+	/* Actual data */
+	if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
+		int datalen = urb->actual_length-1;
+		unsigned short len, fc, seq;
+
+		len = ntohs(*(__be16 *)&data[datalen-2]);
+		if (len>datalen)
+			len=datalen;
+		fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
+		seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
+
+		if (zd->monitor) {
+			if (datalen < 24)
+				goto resubmit;
+			if (!(skb = dev_alloc_skb(datalen+24)))
+				goto resubmit;
+			
+			skb_put_data(skb, &data[datalen - 16], 2);
+			skb_put_data(skb, &data[datalen - 2], 2);
+			skb_put_data(skb, &data[datalen - 14], 6);
+			skb_put_data(skb, &data[datalen - 22], 6);
+			skb_put_data(skb, &data[datalen - 8], 6);
+			skb_put_data(skb, &data[datalen - 24], 2);
+			skb_put_data(skb, data, len);
+			skb->protocol = eth_type_trans(skb, zd->dev);
+			zd->dev->stats.rx_packets++;
+			zd->dev->stats.rx_bytes += skb->len;
+			netif_rx(skb);
+			goto resubmit;
+		}
+			
+		if ((seq & IEEE80211_SCTL_FRAG) ||
+		    (fc & IEEE80211_FCTL_MOREFRAGS)) {
+			struct zd1201_frag *frag = NULL;
+			char *ptr;
+
+			if (datalen<14)
+				goto resubmit;
+			if ((seq & IEEE80211_SCTL_FRAG) == 0) {
+				frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
+				if (!frag)
+					goto resubmit;
+				skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
+				if (!skb) {
+					kfree(frag);
+					goto resubmit;
+				}
+				frag->skb = skb;
+				frag->seq = seq & IEEE80211_SCTL_SEQ;
+				skb_reserve(skb, 2);
+				skb_put_data(skb, &data[datalen - 14], 12);
+				skb_put_data(skb, &data[6], 2);
+				skb_put_data(skb, data + 8, len);
+				hlist_add_head(&frag->fnode, &zd->fraglist);
+				goto resubmit;
+			}
+			hlist_for_each_entry(frag, &zd->fraglist, fnode)
+				if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
+					break;
+			if (!frag)
+				goto resubmit;
+			skb = frag->skb;
+			ptr = skb_put(skb, len);
+			if (ptr)
+				memcpy(ptr, data+8, len);
+			if (fc & IEEE80211_FCTL_MOREFRAGS)
+				goto resubmit;
+			hlist_del_init(&frag->fnode);
+			kfree(frag);
+		} else {
+			if (datalen<14)
+				goto resubmit;
+			skb = dev_alloc_skb(len + 14 + 2);
+			if (!skb)
+				goto resubmit;
+			skb_reserve(skb, 2);
+			skb_put_data(skb, &data[datalen - 14], 12);
+			skb_put_data(skb, &data[6], 2);
+			skb_put_data(skb, data + 8, len);
+		}
+		skb->protocol = eth_type_trans(skb, zd->dev);
+		zd->dev->stats.rx_packets++;
+		zd->dev->stats.rx_bytes += skb->len;
+		netif_rx(skb);
+	}
+resubmit:
+	memset(data, 0, ZD1201_RXSIZE);
+
+	urb->status = 0;
+	urb->dev = zd->usb;
+	if(usb_submit_urb(urb, GFP_ATOMIC))
+		free = 1;
+
+exit:
+	if (free) {
+		zd->rxlen = 0;
+		zd->rxdatas = 1;
+		wake_up(&zd->rxdataq);
+		kfree(urb->transfer_buffer);
+	}
+}
+
+static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
+	unsigned int riddatalen)
+{
+	int err;
+	int i = 0;
+	int code;
+	int rid_fid;
+	int length;
+	unsigned char *pdata;
+
+	zd->rxdatas = 0;
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
+	if (err)
+		return err;
+
+	wait_event_interruptible(zd->rxdataq, zd->rxdatas);
+	if (!zd->rxlen)
+		return -EIO;
+
+	code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
+	rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
+	length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
+	if (length > zd->rxlen)
+		length = zd->rxlen-6;
+
+	/* If access bit is not on, then error */
+	if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
+		return -EINVAL;
+
+	/* Not enough buffer for allocating data */
+	if (riddatalen != (length - 4)) {
+		dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
+		    riddatalen, zd->rxlen, length, rid, rid_fid);
+		return -ENODATA;
+	}
+
+	zd->rxdatas = 0;
+	/* Issue SetRxRid commnd */			
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
+	if (err)
+		return err;
+
+	/* Receive RID record from resource packets */
+	wait_event_interruptible(zd->rxdataq, zd->rxdatas);
+	if (!zd->rxlen)
+		return -EIO;
+
+	if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
+		dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
+		    zd->rxdata[zd->rxlen-1]);
+		return -EINVAL;
+	}
+
+	/* Set the data pointer and received data length */
+	pdata = zd->rxdata;
+	length = zd->rxlen;
+
+	do {
+		int actual_length;
+
+		actual_length = (length > 64) ? 64 : length;
+
+		if (pdata[0] != 0x3) {
+			dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
+			    pdata[0]);
+			return -EINVAL;
+		}
+
+		if (actual_length != 64) {
+			/* Trim the last packet type byte */
+			actual_length--;
+		}
+
+		/* Skip the 4 bytes header (RID length and RID) */
+		if (i == 0) {
+			pdata += 8;
+			actual_length -= 8;
+		} else {
+			pdata += 4;
+			actual_length -= 4;
+		}
+		
+		memcpy(riddata, pdata, actual_length);
+		riddata += actual_length;
+		pdata += actual_length;
+		length -= 64;
+		i++;
+	} while (length > 0);
+
+	return 0;
+}
+
+/*
+ *	resreq:
+ *		byte	type
+ *		byte	sequence
+ *		u16	reserved
+ *		byte	data[12]
+ *	total: 16
+ */
+static int zd1201_setconfig(struct zd1201 *zd, int rid, const void *buf, int len, int wait)
+{
+	int err;
+	unsigned char *request;
+	int reqlen;
+	char seq=0;
+	struct urb *urb;
+	gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
+
+	len += 4;			/* first 4 are for header */
+
+	zd->rxdatas = 0;
+	zd->rxlen = 0;
+	for (seq=0; len > 0; seq++) {
+		request = kzalloc(16, gfp_mask);
+		if (!request)
+			return -ENOMEM;
+		urb = usb_alloc_urb(0, gfp_mask);
+		if (!urb) {
+			kfree(request);
+			return -ENOMEM;
+		}
+		reqlen = len>12 ? 12 : len;
+		request[0] = ZD1201_USB_RESREQ;
+		request[1] = seq;
+		request[2] = 0;
+		request[3] = 0;
+		if (request[1] == 0) {
+			/* add header */
+			*(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
+			*(__le16*)&request[6] = cpu_to_le16(rid);
+			memcpy(request+8, buf, reqlen-4);
+			buf += reqlen-4;
+		} else {
+			memcpy(request+4, buf, reqlen);
+			buf += reqlen;
+		}
+
+		len -= reqlen;
+
+		usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
+		    zd->endp_out2), request, 16, zd1201_usbfree, zd);
+		err = usb_submit_urb(urb, gfp_mask);
+		if (err)
+			goto err;
+	}
+
+	request = kmalloc(16, gfp_mask);
+	if (!request)
+		return -ENOMEM;
+	urb = usb_alloc_urb(0, gfp_mask);
+	if (!urb) {
+		kfree(request);
+		return -ENOMEM;
+	}
+	*((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
+	*((__le16*)&request[4]) = 
+	    cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
+	*((__le16*)&request[6]) = cpu_to_le16(rid);
+	*((__le16*)&request[8]) = cpu_to_le16(0);
+	*((__le16*)&request[10]) = cpu_to_le16(0);
+	usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
+	     request, 16, zd1201_usbfree, zd);
+	err = usb_submit_urb(urb, gfp_mask);
+	if (err)
+		goto err;
+	
+	if (wait) {
+		wait_event_interruptible(zd->rxdataq, zd->rxdatas);
+		if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
+			dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
+		}
+	}
+
+	return 0;
+err:
+	kfree(request);
+	usb_free_urb(urb);
+	return err;
+}
+
+static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
+{
+	int err;
+	__le16 zdval;
+
+	err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
+	if (err)
+		return err;
+	*val = le16_to_cpu(zdval);
+	return 0;
+}
+
+static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
+{
+	__le16 zdval = cpu_to_le16(val);
+	return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
+}
+
+static int zd1201_drvr_start(struct zd1201 *zd)
+{
+	int err, i;
+	short max;
+	__le16 zdmax;
+	unsigned char *buffer;
+
+	buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	usb_fill_bulk_urb(zd->rx_urb, zd->usb, 
+	    usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
+	    zd1201_usbrx, zd);
+
+	err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
+	if (err)
+		goto err_buffer;
+
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
+	if (err)
+		goto err_urb;
+
+	err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
+	    sizeof(__le16));
+	if (err)
+		goto err_urb;
+
+	max = le16_to_cpu(zdmax);
+	for (i=0; i<max; i++) {
+		err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
+		if (err)
+			goto err_urb;
+	}
+
+	return 0;
+
+err_urb:
+	usb_kill_urb(zd->rx_urb);
+	return err;
+err_buffer:
+	kfree(buffer);
+	return err;
+}
+
+/*	Magic alert: The firmware doesn't seem to like the MAC state being
+ *	toggled in promisc (aka monitor) mode.
+ *	(It works a number of times, but will halt eventually)
+ *	So we turn it of before disabling and on after enabling if needed.
+ */
+static int zd1201_enable(struct zd1201 *zd)
+{
+	int err;
+
+	if (zd->mac_enabled)
+		return 0;
+
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
+	if (!err)
+		zd->mac_enabled = 1;
+
+	if (zd->monitor)
+		err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
+
+	return err;
+}
+
+static int zd1201_disable(struct zd1201 *zd)
+{
+	int err;
+
+	if (!zd->mac_enabled)
+		return 0;
+	if (zd->monitor) {
+		err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
+		if (err)
+			return err;
+	}
+
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
+	if (!err)
+		zd->mac_enabled = 0;
+	return err;
+}
+
+static int zd1201_mac_reset(struct zd1201 *zd)
+{
+	if (!zd->mac_enabled)
+		return 0;
+	zd1201_disable(zd);
+	return zd1201_enable(zd);
+}
+
+static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
+{
+	int err, val;
+	char buf[IW_ESSID_MAX_SIZE+2];
+
+	err = zd1201_disable(zd);
+	if (err)
+		return err;
+
+	val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
+	val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
+	if (err)
+		return err;
+
+	*(__le16 *)buf = cpu_to_le16(essidlen);
+	memcpy(buf+2, essid, essidlen);
+	if (!zd->ap) {	/* Normal station */
+		err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
+		    IW_ESSID_MAX_SIZE+2, 1);
+		if (err)
+			return err;
+	} else {	/* AP */
+		err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
+		    IW_ESSID_MAX_SIZE+2, 1);
+		if (err)
+			return err;
+	}
+
+	err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
+	    zd->dev->dev_addr, zd->dev->addr_len, 1);
+	if (err)
+		return err;
+
+	err = zd1201_enable(zd);
+	if (err)
+		return err;
+
+	msleep(100);
+	return 0;
+}
+
+static int zd1201_net_open(struct net_device *dev)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+
+	/* Start MAC with wildcard if no essid set */
+	if (!zd->mac_enabled)
+		zd1201_join(zd, zd->essid, zd->essidlen);
+	netif_start_queue(dev);
+
+	return 0;
+}
+
+static int zd1201_net_stop(struct net_device *dev)
+{
+	netif_stop_queue(dev);
+	return 0;
+}
+
+/*
+	RFC 1042 encapsulates Ethernet frames in 802.11 frames
+	by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
+	(0x00, 0x00, 0x00). Zd requires an additional padding, copy
+	of ethernet addresses, length of the standard RFC 1042 packet
+	and a command byte (which is nul for tx).
+	
+	tx frame (from Wlan NG):
+	RFC 1042:
+		llc		0xAA 0xAA 0x03 (802.2 LLC)
+		snap		0x00 0x00 0x00 (Ethernet encapsulated)
+		type		2 bytes, Ethernet type field
+		payload		(minus eth header)
+	Zydas specific:
+		padding		1B if (skb->len+8+1)%64==0
+		Eth MAC addr	12 bytes, Ethernet MAC addresses
+		length		2 bytes, RFC 1042 packet length 
+				(llc+snap+type+payload)
+		zd		1 null byte, zd1201 packet type
+ */
+static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
+						struct net_device *dev)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	unsigned char *txbuf = zd->txdata;
+	int txbuflen, pad = 0, err;
+	struct urb *urb = zd->tx_urb;
+
+	if (!zd->mac_enabled || zd->monitor) {
+		dev->stats.tx_dropped++;
+		kfree_skb(skb);
+		return NETDEV_TX_OK;
+	}
+	netif_stop_queue(dev);
+
+	txbuflen = skb->len + 8 + 1;
+	if (txbuflen%64 == 0) {
+		pad = 1;
+		txbuflen++;
+	}
+	txbuf[0] = 0xAA;
+	txbuf[1] = 0xAA;
+	txbuf[2] = 0x03;
+	txbuf[3] = 0x00;	/* rfc1042 */
+	txbuf[4] = 0x00;
+	txbuf[5] = 0x00;
+
+	skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
+	if (pad)
+		txbuf[skb->len-12+6]=0;
+	skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
+	*(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
+	txbuf[txbuflen-1] = 0;
+
+	usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
+	    txbuf, txbuflen, zd1201_usbtx, zd);
+
+	err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
+	if (err) {
+		dev->stats.tx_errors++;
+		netif_start_queue(dev);
+	} else {
+		dev->stats.tx_packets++;
+		dev->stats.tx_bytes += skb->len;
+	}
+	kfree_skb(skb);
+
+	return NETDEV_TX_OK;
+}
+
+static void zd1201_tx_timeout(struct net_device *dev, unsigned int txqueue)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+
+	if (!zd)
+		return;
+	dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
+	    dev->name);
+	usb_unlink_urb(zd->tx_urb);
+	dev->stats.tx_errors++;
+	/* Restart the timeout to quiet the watchdog: */
+	netif_trans_update(dev); /* prevent tx timeout */
+}
+
+static int zd1201_set_mac_address(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+	struct zd1201 *zd = netdev_priv(dev);
+	int err;
+
+	if (!zd)
+		return -ENODEV;
+
+	err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
+	    addr->sa_data, dev->addr_len, 1);
+	if (err)
+		return err;
+	eth_hw_addr_set(dev, addr->sa_data);
+
+	return zd1201_mac_reset(zd);
+}
+
+static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+
+	return &zd->iwstats;
+}
+
+static void zd1201_set_multicast(struct net_device *dev)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	struct netdev_hw_addr *ha;
+	unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
+	int i;
+
+	if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
+		return;
+
+	i = 0;
+	netdev_for_each_mc_addr(ha, dev)
+		memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
+	zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
+			 netdev_mc_count(dev) * ETH_ALEN, 0);
+}
+
+static int zd1201_config_commit(struct net_device *dev, 
+    struct iw_request_info *info, struct iw_point *data, char *essid)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_name(struct net_device *dev,
+    struct iw_request_info *info, char *name, char *extra)
+{
+	strcpy(name, "IEEE 802.11b");
+	return 0;
+}
+
+static int zd1201_set_freq(struct net_device *dev,
+    struct iw_request_info *info, struct iw_freq *freq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short channel = 0;
+	int err;
+
+	if (freq->e == 0)
+		channel = freq->m;
+	else
+		channel = ieee80211_frequency_to_channel(freq->m);
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
+	if (err)
+		return err;
+
+	zd1201_mac_reset(zd);
+
+	return 0;
+}
+
+static int zd1201_get_freq(struct net_device *dev,
+    struct iw_request_info *info, struct iw_freq *freq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short channel;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
+	if (err)
+		return err;
+	freq->e = 0;
+	freq->m = channel;
+
+	return 0;
+}
+
+static int zd1201_set_mode(struct net_device *dev,
+    struct iw_request_info *info, __u32 *mode, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short porttype, monitor = 0;
+	unsigned char buffer[IW_ESSID_MAX_SIZE+2];
+	int err;
+
+	if (zd->ap) {
+		if (*mode != IW_MODE_MASTER)
+			return -EINVAL;
+		return 0;
+	}
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
+	if (err)
+		return err;
+	zd->dev->type = ARPHRD_ETHER;
+	switch(*mode) {
+		case IW_MODE_MONITOR:
+			monitor = 1;
+			zd->dev->type = ARPHRD_IEEE80211;
+			/* Make sure we are no longer associated with by
+			   setting an 'impossible' essid.
+			   (otherwise we mess up firmware)
+			 */
+			zd1201_join(zd, "\0-*#\0", 5);
+			/* Put port in pIBSS */
+			fallthrough;
+		case 8: /* No pseudo-IBSS in wireless extensions (yet) */
+			porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
+			break;
+		case IW_MODE_ADHOC:
+			porttype = ZD1201_PORTTYPE_IBSS;
+			break;
+		case IW_MODE_INFRA:
+			porttype = ZD1201_PORTTYPE_BSS;
+			break;
+		default:
+			return -EINVAL;
+	}
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
+	if (err)
+		return err;
+	if (zd->monitor && !monitor) {
+			zd1201_disable(zd);
+			*(__le16 *)buffer = cpu_to_le16(zd->essidlen);
+			memcpy(buffer+2, zd->essid, zd->essidlen);
+			err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
+			    buffer, IW_ESSID_MAX_SIZE+2, 1);
+			if (err)
+				return err;
+	}
+	zd->monitor = monitor;
+	/* If monitor mode is set we don't actually turn it on here since it
+	 * is done during mac reset anyway (see zd1201_mac_enable).
+	 */
+	zd1201_mac_reset(zd);
+
+	return 0;
+}
+
+static int zd1201_get_mode(struct net_device *dev,
+    struct iw_request_info *info, __u32 *mode, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short porttype;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
+	if (err)
+		return err;
+	switch(porttype) {
+		case ZD1201_PORTTYPE_IBSS:
+			*mode = IW_MODE_ADHOC;
+			break;
+		case ZD1201_PORTTYPE_BSS:
+			*mode = IW_MODE_INFRA;
+			break;
+		case ZD1201_PORTTYPE_WDS:
+			*mode = IW_MODE_REPEAT;
+			break;
+		case ZD1201_PORTTYPE_PSEUDOIBSS:
+			*mode = 8;/* No Pseudo-IBSS... */
+			break;
+		case ZD1201_PORTTYPE_AP:
+			*mode = IW_MODE_MASTER;
+			break;
+		default:
+			dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
+			    porttype);
+			*mode = IW_MODE_AUTO;
+	}
+	if (zd->monitor)
+		*mode = IW_MODE_MONITOR;
+
+	return 0;
+}
+
+static int zd1201_get_range(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *wrq, char *extra)
+{
+	struct iw_range *range = (struct iw_range *)extra;
+
+	wrq->length = sizeof(struct iw_range);
+	memset(range, 0, sizeof(struct iw_range));
+	range->we_version_compiled = WIRELESS_EXT;
+	range->we_version_source = WIRELESS_EXT;
+
+	range->max_qual.qual = 128;
+	range->max_qual.level = 128;
+	range->max_qual.noise = 128;
+	range->max_qual.updated = 7;
+
+	range->encoding_size[0] = 5;
+	range->encoding_size[1] = 13;
+	range->num_encoding_sizes = 2;
+	range->max_encoding_tokens = ZD1201_NUMKEYS;
+
+	range->num_bitrates = 4;
+	range->bitrate[0] = 1000000;
+	range->bitrate[1] = 2000000;
+	range->bitrate[2] = 5500000;
+	range->bitrate[3] = 11000000;
+
+	range->min_rts = 0;
+	range->min_frag = ZD1201_FRAGMIN;
+	range->max_rts = ZD1201_RTSMAX;
+	range->min_frag = ZD1201_FRAGMAX;
+
+	return 0;
+}
+
+/*	Little bit of magic here: we only get the quality if we poll
+ *	for it, and we never get an actual request to trigger such
+ *	a poll. Therefore we 'assume' that the user will soon ask for
+ *	the stats after asking the bssid.
+ */
+static int zd1201_get_wap(struct net_device *dev,
+    struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	unsigned char buffer[6];
+
+	if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
+		/* Unfortunately the quality and noise reported is useless.
+		   they seem to be accumulators that increase until you
+		   read them, unless we poll on a fixed interval we can't
+		   use them
+		 */
+		/*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
+		zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
+		/*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
+		zd->iwstats.qual.updated = 2;
+	}
+
+	return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
+}
+
+static int zd1201_set_scan(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *srq, char *extra)
+{
+	/* We do everything in get_scan */
+	return 0;
+}
+
+static int zd1201_get_scan(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *srq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	int err, i, j, enabled_save;
+	struct iw_event iwe;
+	char *cev = extra;
+	char *end_buf = extra + IW_SCAN_MAX_DATA;
+
+	/* No scanning in AP mode */
+	if (zd->ap)
+		return -EOPNOTSUPP;
+
+	/* Scan doesn't seem to work if disabled */
+	enabled_save = zd->mac_enabled;
+	zd1201_enable(zd);
+
+	zd->rxdatas = 0;
+	err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE, 
+	     ZD1201_INQ_SCANRESULTS, 0, 0);
+	if (err)
+		return err;
+
+	wait_event_interruptible(zd->rxdataq, zd->rxdatas);
+	if (!zd->rxlen)
+		return -EIO;
+
+	if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
+		return -EIO;
+
+	for(i=8; i<zd->rxlen; i+=62) {
+		iwe.cmd = SIOCGIWAP;
+		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+		memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
+		cev = iwe_stream_add_event(info, cev, end_buf,
+					   &iwe, IW_EV_ADDR_LEN);
+
+		iwe.cmd = SIOCGIWESSID;
+		iwe.u.data.length = zd->rxdata[i+16];
+		iwe.u.data.flags = 1;
+		cev = iwe_stream_add_point(info, cev, end_buf,
+					   &iwe, zd->rxdata+i+18);
+
+		iwe.cmd = SIOCGIWMODE;
+		if (zd->rxdata[i+14]&0x01)
+			iwe.u.mode = IW_MODE_MASTER;
+		else
+			iwe.u.mode = IW_MODE_ADHOC;
+		cev = iwe_stream_add_event(info, cev, end_buf,
+					   &iwe, IW_EV_UINT_LEN);
+		
+		iwe.cmd = SIOCGIWFREQ;
+		iwe.u.freq.m = zd->rxdata[i+0];
+		iwe.u.freq.e = 0;
+		cev = iwe_stream_add_event(info, cev, end_buf,
+					   &iwe, IW_EV_FREQ_LEN);
+		
+		iwe.cmd = SIOCGIWRATE;
+		iwe.u.bitrate.fixed = 0;
+		iwe.u.bitrate.disabled = 0;
+		for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
+			iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
+			cev = iwe_stream_add_event(info, cev, end_buf,
+						   &iwe, IW_EV_PARAM_LEN);
+		}
+		
+		iwe.cmd = SIOCGIWENCODE;
+		iwe.u.data.length = 0;
+		if (zd->rxdata[i+14]&0x10)
+			iwe.u.data.flags = IW_ENCODE_ENABLED;
+		else
+			iwe.u.data.flags = IW_ENCODE_DISABLED;
+		cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
+		
+		iwe.cmd = IWEVQUAL;
+		iwe.u.qual.qual = zd->rxdata[i+4];
+		iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
+		iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
+		iwe.u.qual.updated = 7;
+		cev = iwe_stream_add_event(info, cev, end_buf,
+					   &iwe, IW_EV_QUAL_LEN);
+	}
+
+	if (!enabled_save)
+		zd1201_disable(zd);
+
+	srq->length = cev - extra;
+	srq->flags = 0;
+
+	return 0;
+}
+
+static int zd1201_set_essid(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *data, char *essid)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+
+	if (data->length > IW_ESSID_MAX_SIZE)
+		return -EINVAL;
+	if (data->length < 1)
+		data->length = 1;
+	zd->essidlen = data->length;
+	memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
+	memcpy(zd->essid, essid, data->length);
+	return zd1201_join(zd, zd->essid, zd->essidlen);
+}
+
+static int zd1201_get_essid(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *data, char *essid)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+
+	memcpy(essid, zd->essid, zd->essidlen);
+	data->flags = 1;
+	data->length = zd->essidlen;
+
+	return 0;
+}
+
+static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
+    struct iw_point *data, char *nick)
+{
+	strcpy(nick, "zd1201");
+	data->flags = 1;
+	data->length = strlen(nick);
+	return 0;
+}
+
+static int zd1201_set_rate(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short rate;
+	int err;
+
+	switch (rrq->value) {
+		case 1000000:
+			rate = ZD1201_RATEB1;
+			break;
+		case 2000000:
+			rate = ZD1201_RATEB2;
+			break;
+		case 5500000:
+			rate = ZD1201_RATEB5;
+			break;
+		case 11000000:
+		default:
+			rate = ZD1201_RATEB11;
+			break;
+	}
+	if (!rrq->fixed) { /* Also enable all lower bitrates */
+		rate |= rate-1;
+	}
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
+	if (err)
+		return err;
+
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_rate(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short rate;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
+	if (err)
+		return err;
+
+	switch(rate) {
+		case 1:
+			rrq->value = 1000000;
+			break;
+		case 2:
+			rrq->value = 2000000;
+			break;
+		case 5:
+			rrq->value = 5500000;
+			break;
+		case 11:
+			rrq->value = 11000000;
+			break;
+		default:
+			rrq->value = 0;
+	}
+	rrq->fixed = 0;
+	rrq->disabled = 0;
+
+	return 0;
+}
+
+static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
+    struct iw_param *rts, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	int err;
+	short val = rts->value;
+
+	if (rts->disabled || !rts->fixed)
+		val = ZD1201_RTSMAX;
+	if (val > ZD1201_RTSMAX)
+		return -EINVAL;
+	if (val < 0)
+		return -EINVAL;
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
+	if (err)
+		return err;
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
+    struct iw_param *rts, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short rtst;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
+	if (err)
+		return err;
+	rts->value = rtst;
+	rts->disabled = (rts->value == ZD1201_RTSMAX);
+	rts->fixed = 1;
+
+	return 0;
+}
+
+static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
+    struct iw_param *frag, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	int err;
+	short val = frag->value;
+
+	if (frag->disabled || !frag->fixed)
+		val = ZD1201_FRAGMAX;
+	if (val > ZD1201_FRAGMAX)
+		return -EINVAL;
+	if (val < ZD1201_FRAGMIN)
+		return -EINVAL;
+	if (val & 1)
+		return -EINVAL;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
+	if (err)
+		return err;
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
+    struct iw_param *frag, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short fragt;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
+	if (err)
+		return err;
+	frag->value = fragt;
+	frag->disabled = (frag->value == ZD1201_FRAGMAX);
+	frag->fixed = 1;
+
+	return 0;
+}
+
+static int zd1201_set_retry(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	return 0;
+}
+
+static int zd1201_get_retry(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	return 0;
+}
+
+static int zd1201_set_encode(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *erq, char *key)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short i;
+	int err, rid;
+
+	if (erq->length > ZD1201_MAXKEYLEN)
+		return -EINVAL;
+
+	i = (erq->flags & IW_ENCODE_INDEX)-1;
+	if (i == -1) {
+		err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
+		if (err)
+			return err;
+	} else {
+		err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
+		if (err)
+			return err;
+	}
+
+	if (i < 0 || i >= ZD1201_NUMKEYS)
+		return -EINVAL;
+
+	rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
+	err = zd1201_setconfig(zd, rid, key, erq->length, 1);
+	if (err)
+		return err;
+	zd->encode_keylen[i] = erq->length;
+	memcpy(zd->encode_keys[i], key, erq->length);
+
+	i=0;
+	if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
+		i |= 0x01;
+		zd->encode_enabled = 1;
+	} else
+		zd->encode_enabled = 0;
+	if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
+		i |= 0x02;
+		zd->encode_restricted = 1;
+	} else
+		zd->encode_restricted = 0;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
+	if (err)
+		return err;
+
+	if (zd->encode_enabled)
+		i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
+	else
+		i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
+	if (err)
+		return err;
+
+	return zd1201_mac_reset(zd);
+}
+
+static int zd1201_get_encode(struct net_device *dev,
+    struct iw_request_info *info, struct iw_point *erq, char *key)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short i;
+	int err;
+
+	if (zd->encode_enabled)
+		erq->flags = IW_ENCODE_ENABLED;
+	else
+		erq->flags = IW_ENCODE_DISABLED;
+	if (zd->encode_restricted)
+		erq->flags |= IW_ENCODE_RESTRICTED;
+	else
+		erq->flags |= IW_ENCODE_OPEN;
+
+	i = (erq->flags & IW_ENCODE_INDEX) -1;
+	if (i == -1) {
+		err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
+		if (err)
+			return err;
+	}
+	if (i<0 || i>= ZD1201_NUMKEYS)
+		return -EINVAL;
+
+	erq->flags |= i+1;
+
+	erq->length = zd->encode_keylen[i];
+	memcpy(key, zd->encode_keys[i], erq->length);
+
+	return 0;
+}
+
+static int zd1201_set_power(struct net_device *dev, 
+    struct iw_request_info *info, struct iw_param *vwrq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short enabled, duration, level;
+	int err;
+
+	enabled = vwrq->disabled ? 0 : 1;
+	if (enabled) {
+		if (vwrq->flags & IW_POWER_PERIOD) {
+			duration = vwrq->value;
+			err = zd1201_setconfig16(zd, 
+			    ZD1201_RID_CNFMAXSLEEPDURATION, duration);
+			if (err)
+				return err;
+			goto out;
+		}
+		if (vwrq->flags & IW_POWER_TIMEOUT) {
+			err = zd1201_getconfig16(zd, 
+			    ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
+			if (err)
+				return err;
+			level = vwrq->value * 4 / duration;
+			if (level > 4)
+				level = 4;
+			if (level < 0)
+				level = 0;
+			err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
+			    level);
+			if (err)
+				return err;
+			goto out;
+		}
+		return -EINVAL;
+	}
+out:
+	return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
+}
+
+static int zd1201_get_power(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *vwrq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short enabled, level, duration;
+	int err;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
+	if (err)
+		return err;
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
+	if (err)
+		return err;
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
+	if (err)
+		return err;
+	vwrq->disabled = enabled ? 0 : 1;
+	if (vwrq->flags & IW_POWER_TYPE) {
+		if (vwrq->flags & IW_POWER_PERIOD) {
+			vwrq->value = duration;
+			vwrq->flags = IW_POWER_PERIOD;
+		} else {
+			vwrq->value = duration * level / 4;
+			vwrq->flags = IW_POWER_TIMEOUT;
+		}
+	}
+	if (vwrq->flags & IW_POWER_MODE) {
+		if (enabled && level)
+			vwrq->flags = IW_POWER_UNICAST_R;
+		else
+			vwrq->flags = IW_POWER_ALL_R;
+	}
+
+	return 0;
+}
+
+
+static const iw_handler zd1201_iw_handler[] =
+{
+	(iw_handler) zd1201_config_commit,	/* SIOCSIWCOMMIT */
+	(iw_handler) zd1201_get_name,    	/* SIOCGIWNAME */
+	(iw_handler) NULL,			/* SIOCSIWNWID */
+	(iw_handler) NULL,			/* SIOCGIWNWID */
+	(iw_handler) zd1201_set_freq,		/* SIOCSIWFREQ */
+	(iw_handler) zd1201_get_freq,		/* SIOCGIWFREQ */
+	(iw_handler) zd1201_set_mode,		/* SIOCSIWMODE */
+	(iw_handler) zd1201_get_mode,		/* SIOCGIWMODE */
+	(iw_handler) NULL,                  	/* SIOCSIWSENS */
+	(iw_handler) NULL,           		/* SIOCGIWSENS */
+	(iw_handler) NULL,			/* SIOCSIWRANGE */
+	(iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
+	(iw_handler) NULL,			/* SIOCSIWPRIV */
+	(iw_handler) NULL,			/* SIOCGIWPRIV */
+	(iw_handler) NULL,			/* SIOCSIWSTATS */
+	(iw_handler) NULL,			/* SIOCGIWSTATS */
+	(iw_handler) NULL,			/* SIOCSIWSPY */
+	(iw_handler) NULL,			/* SIOCGIWSPY */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) NULL/*zd1201_set_wap*/,		/* SIOCSIWAP */
+	(iw_handler) zd1201_get_wap,		/* SIOCGIWAP */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) NULL,       		/* SIOCGIWAPLIST */
+	(iw_handler) zd1201_set_scan,		/* SIOCSIWSCAN */
+	(iw_handler) zd1201_get_scan,		/* SIOCGIWSCAN */
+	(iw_handler) zd1201_set_essid,		/* SIOCSIWESSID */
+	(iw_handler) zd1201_get_essid,		/* SIOCGIWESSID */
+	(iw_handler) NULL,         		/* SIOCSIWNICKN */
+	(iw_handler) zd1201_get_nick, 		/* SIOCGIWNICKN */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) NULL,			/* -- hole -- */
+	(iw_handler) zd1201_set_rate,		/* SIOCSIWRATE */
+	(iw_handler) zd1201_get_rate,		/* SIOCGIWRATE */
+	(iw_handler) zd1201_set_rts,		/* SIOCSIWRTS */
+	(iw_handler) zd1201_get_rts,		/* SIOCGIWRTS */
+	(iw_handler) zd1201_set_frag,		/* SIOCSIWFRAG */
+	(iw_handler) zd1201_get_frag,		/* SIOCGIWFRAG */
+	(iw_handler) NULL,         		/* SIOCSIWTXPOW */
+	(iw_handler) NULL,          		/* SIOCGIWTXPOW */
+	(iw_handler) zd1201_set_retry,		/* SIOCSIWRETRY */
+	(iw_handler) zd1201_get_retry,		/* SIOCGIWRETRY */
+	(iw_handler) zd1201_set_encode,		/* SIOCSIWENCODE */
+	(iw_handler) zd1201_get_encode,		/* SIOCGIWENCODE */
+	(iw_handler) zd1201_set_power,		/* SIOCSIWPOWER */
+	(iw_handler) zd1201_get_power,		/* SIOCGIWPOWER */
+};
+
+static int zd1201_set_hostauth(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
+}
+
+static int zd1201_get_hostauth(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short hostauth;
+	int err;
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
+	if (err)
+		return err;
+	rrq->value = hostauth;
+	rrq->fixed = 1;
+
+	return 0;
+}
+
+static int zd1201_auth_sta(struct net_device *dev,
+    struct iw_request_info *info, struct sockaddr *sta, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	unsigned char buffer[10];
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	memcpy(buffer, sta->sa_data, ETH_ALEN);
+	*(short*)(buffer+6) = 0;	/* 0==success, 1==failure */
+	*(short*)(buffer+8) = 0;
+
+	return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
+}
+
+static int zd1201_set_maxassoc(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	return zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
+}
+
+static int zd1201_get_maxassoc(struct net_device *dev,
+    struct iw_request_info *info, struct iw_param *rrq, char *extra)
+{
+	struct zd1201 *zd = netdev_priv(dev);
+	short maxassoc;
+	int err;
+
+	if (!zd->ap)
+		return -EOPNOTSUPP;
+
+	err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
+	if (err)
+		return err;
+	rrq->value = maxassoc;
+	rrq->fixed = 1;
+
+	return 0;
+}
+
+static const iw_handler zd1201_private_handler[] = {
+	(iw_handler) zd1201_set_hostauth,	/* ZD1201SIWHOSTAUTH */
+	(iw_handler) zd1201_get_hostauth,	/* ZD1201GIWHOSTAUTH */
+	(iw_handler) zd1201_auth_sta,		/* ZD1201SIWAUTHSTA */
+	(iw_handler) NULL,			/* nothing to get */
+	(iw_handler) zd1201_set_maxassoc,	/* ZD1201SIMAXASSOC */
+	(iw_handler) zd1201_get_maxassoc,	/* ZD1201GIMAXASSOC */
+};
+
+static const struct iw_priv_args zd1201_private_args[] = {
+	{ ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
+	    IW_PRIV_TYPE_NONE, "sethostauth" },
+	{ ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
+	    IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
+	{ ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
+	    IW_PRIV_TYPE_NONE, "authstation" },
+	{ ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
+	    IW_PRIV_TYPE_NONE, "setmaxassoc" },
+	{ ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
+	    IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
+};
+
+static const struct iw_handler_def zd1201_iw_handlers = {
+	.num_standard 		= ARRAY_SIZE(zd1201_iw_handler),
+	.num_private 		= ARRAY_SIZE(zd1201_private_handler),
+	.num_private_args 	= ARRAY_SIZE(zd1201_private_args),
+	.standard 		= (iw_handler *)zd1201_iw_handler,
+	.private 		= (iw_handler *)zd1201_private_handler,
+	.private_args 		= (struct iw_priv_args *) zd1201_private_args,
+	.get_wireless_stats	= zd1201_get_wireless_stats,
+};
+
+static const struct net_device_ops zd1201_netdev_ops = {
+	.ndo_open		= zd1201_net_open,
+	.ndo_stop		= zd1201_net_stop,
+	.ndo_start_xmit		= zd1201_hard_start_xmit,
+	.ndo_tx_timeout		= zd1201_tx_timeout,
+	.ndo_set_rx_mode	= zd1201_set_multicast,
+	.ndo_set_mac_address	= zd1201_set_mac_address,
+	.ndo_validate_addr	= eth_validate_addr,
+};
+
+static int zd1201_probe(struct usb_interface *interface,
+			const struct usb_device_id *id)
+{
+	struct zd1201 *zd;
+	struct net_device *dev;
+	struct usb_device *usb;
+	int err;
+	short porttype;
+	char buf[IW_ESSID_MAX_SIZE+2];
+	u8 addr[ETH_ALEN];
+
+	usb = interface_to_usbdev(interface);
+
+	dev = alloc_etherdev(sizeof(*zd));
+	if (!dev)
+		return -ENOMEM;
+	zd = netdev_priv(dev);
+	zd->dev = dev;
+
+	zd->ap = ap;
+	zd->usb = usb;
+	zd->removed = 0;
+	init_waitqueue_head(&zd->rxdataq);
+	INIT_HLIST_HEAD(&zd->fraglist);
+	
+	err = zd1201_fw_upload(usb, zd->ap);
+	if (err) {
+		dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
+		goto err_zd;
+	}
+	
+	zd->endp_in = 1;
+	zd->endp_out = 1;
+	zd->endp_out2 = 2;
+	zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+	zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!zd->rx_urb || !zd->tx_urb) {
+		err = -ENOMEM;
+		goto err_zd;
+	}
+
+	mdelay(100);
+	err = zd1201_drvr_start(zd);
+	if (err)
+		goto err_zd;
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
+	if (err)
+		goto err_start;
+
+	err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
+	    ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
+	if (err)
+		goto err_start;
+
+	dev->netdev_ops = &zd1201_netdev_ops;
+	dev->wireless_handlers = &zd1201_iw_handlers;
+	dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
+	strcpy(dev->name, "wlan%d");
+
+	err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, addr, ETH_ALEN);
+	if (err)
+		goto err_start;
+	eth_hw_addr_set(dev, addr);
+
+	/* Set wildcard essid to match zd->essid */
+	*(__le16 *)buf = cpu_to_le16(0);
+	err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
+	    IW_ESSID_MAX_SIZE+2, 1);
+	if (err)
+		goto err_start;
+
+	if (zd->ap)
+		porttype = ZD1201_PORTTYPE_AP;
+	else
+		porttype = ZD1201_PORTTYPE_BSS;
+	err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
+	if (err)
+		goto err_start;
+
+	SET_NETDEV_DEV(dev, &usb->dev);
+
+	err = register_netdev(dev);
+	if (err)
+		goto err_start;
+	dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
+	    dev->name);
+
+	usb_set_intfdata(interface, zd);
+	zd1201_enable(zd);	/* zd1201 likes to startup enabled, */
+	zd1201_disable(zd);	/* interfering with all the wifis in range */
+	return 0;
+
+err_start:
+	/* Leave the device in reset state */
+	zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
+err_zd:
+	usb_free_urb(zd->tx_urb);
+	usb_free_urb(zd->rx_urb);
+	free_netdev(dev);
+	return err;
+}
+
+static void zd1201_disconnect(struct usb_interface *interface)
+{
+	struct zd1201 *zd = usb_get_intfdata(interface);
+	struct hlist_node *node2;
+	struct zd1201_frag *frag;
+
+	if (!zd)
+		return;
+	usb_set_intfdata(interface, NULL);
+
+	hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
+		hlist_del_init(&frag->fnode);
+		kfree_skb(frag->skb);
+		kfree(frag);
+	}
+
+	if (zd->tx_urb) {
+		usb_kill_urb(zd->tx_urb);
+		usb_free_urb(zd->tx_urb);
+	}
+	if (zd->rx_urb) {
+		usb_kill_urb(zd->rx_urb);
+		usb_free_urb(zd->rx_urb);
+	}
+
+	if (zd->dev) {
+		unregister_netdev(zd->dev);
+		free_netdev(zd->dev);
+	}
+}
+
+#ifdef CONFIG_PM
+
+static int zd1201_suspend(struct usb_interface *interface,
+			   pm_message_t message)
+{
+	struct zd1201 *zd = usb_get_intfdata(interface);
+
+	netif_device_detach(zd->dev);
+
+	zd->was_enabled = zd->mac_enabled;
+
+	if (zd->was_enabled)
+		return zd1201_disable(zd);
+	else
+		return 0;
+}
+
+static int zd1201_resume(struct usb_interface *interface)
+{
+	struct zd1201 *zd = usb_get_intfdata(interface);
+
+	if (!zd || !zd->dev)
+		return -ENODEV;
+
+	netif_device_attach(zd->dev);
+
+	if (zd->was_enabled)
+		return zd1201_enable(zd);
+	else
+		return 0;
+}
+
+#else
+
+#define zd1201_suspend NULL
+#define zd1201_resume  NULL
+
+#endif
+
+static struct usb_driver zd1201_usb = {
+	.name = "zd1201",
+	.probe = zd1201_probe,
+	.disconnect = zd1201_disconnect,
+	.id_table = zd1201_table,
+	.suspend = zd1201_suspend,
+	.resume = zd1201_resume,
+	.disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(zd1201_usb);
diff --git a/drivers/net/wireless/zydas/zd1201.h b/drivers/net/wireless/zydas/zd1201.h
new file mode 100644
index 000000000..c46ac8755
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1201.h
@@ -0,0 +1,144 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *	Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
+ *
+ *	Parts of this driver have been derived from a wlan-ng version
+ *	modified by ZyDAS.
+ *	Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
+ */
+
+#ifndef _INCLUDE_ZD1201_H_
+#define _INCLUDE_ZD1201_H_
+
+#define ZD1201_NUMKEYS		4
+#define ZD1201_MAXKEYLEN	13
+#define ZD1201_MAXMULTI		16
+#define ZD1201_FRAGMAX		2500
+#define ZD1201_FRAGMIN		256
+#define ZD1201_RTSMAX		2500
+
+#define ZD1201_RXSIZE		3000
+
+struct zd1201 {
+	struct usb_device	*usb;
+	int			removed;
+	struct net_device	*dev;
+	struct iw_statistics	iwstats;
+
+	int			endp_in;
+	int			endp_out;
+	int			endp_out2;
+	struct urb		*rx_urb;
+	struct urb		*tx_urb;
+
+	unsigned char 		rxdata[ZD1201_RXSIZE];
+	int			rxlen;
+	wait_queue_head_t	rxdataq;
+	int			rxdatas;
+	struct hlist_head	fraglist;
+	unsigned char		txdata[ZD1201_RXSIZE];
+
+	int			ap;
+	char			essid[IW_ESSID_MAX_SIZE+1];
+	int			essidlen;
+	int			mac_enabled;
+	int			was_enabled;
+	int			monitor;
+	int			encode_enabled;
+	int			encode_restricted;
+	unsigned char		encode_keys[ZD1201_NUMKEYS][ZD1201_MAXKEYLEN];
+	int			encode_keylen[ZD1201_NUMKEYS];
+};
+
+struct zd1201_frag {
+	struct hlist_node	fnode;
+	int			seq;
+	struct sk_buff		*skb;
+};
+
+#define ZD1201SIWHOSTAUTH SIOCIWFIRSTPRIV
+#define ZD1201GIWHOSTAUTH ZD1201SIWHOSTAUTH+1
+#define ZD1201SIWAUTHSTA SIOCIWFIRSTPRIV+2
+#define ZD1201SIWMAXASSOC SIOCIWFIRSTPRIV+4
+#define ZD1201GIWMAXASSOC ZD1201SIWMAXASSOC+1
+
+#define ZD1201_FW_TIMEOUT	(1000)
+
+#define ZD1201_TX_TIMEOUT	(2000)
+
+#define ZD1201_USB_CMDREQ	0
+#define ZD1201_USB_RESREQ	1
+
+#define	ZD1201_CMDCODE_INIT	0x00
+#define ZD1201_CMDCODE_ENABLE	0x01
+#define ZD1201_CMDCODE_DISABLE	0x02
+#define ZD1201_CMDCODE_ALLOC	0x0a
+#define ZD1201_CMDCODE_INQUIRE	0x11
+#define ZD1201_CMDCODE_SETRXRID	0x17
+#define ZD1201_CMDCODE_ACCESS	0x21
+
+#define ZD1201_PACKET_EVENTSTAT	0x0
+#define ZD1201_PACKET_RXDATA	0x1
+#define ZD1201_PACKET_INQUIRE	0x2
+#define ZD1201_PACKET_RESOURCE	0x3
+
+#define ZD1201_ACCESSBIT	0x0100
+
+#define ZD1201_RID_CNFPORTTYPE		0xfc00
+#define ZD1201_RID_CNFOWNMACADDR	0xfc01
+#define ZD1201_RID_CNFDESIREDSSID	0xfc02
+#define ZD1201_RID_CNFOWNCHANNEL	0xfc03
+#define ZD1201_RID_CNFOWNSSID		0xfc04
+#define ZD1201_RID_CNFMAXDATALEN	0xfc07
+#define ZD1201_RID_CNFPMENABLED		0xfc09
+#define ZD1201_RID_CNFPMEPS		0xfc0a
+#define ZD1201_RID_CNFMAXSLEEPDURATION	0xfc0c
+#define ZD1201_RID_CNFDEFAULTKEYID	0xfc23
+#define ZD1201_RID_CNFDEFAULTKEY0	0xfc24
+#define ZD1201_RID_CNFDEFAULTKEY1	0xfc25
+#define ZD1201_RID_CNFDEFAULTKEY2	0xfc26
+#define ZD1201_RID_CNFDEFAULTKEY3	0xfc27
+#define ZD1201_RID_CNFWEBFLAGS		0xfc28
+#define ZD1201_RID_CNFAUTHENTICATION	0xfc2a
+#define ZD1201_RID_CNFMAXASSOCSTATIONS	0xfc2b
+#define ZD1201_RID_CNFHOSTAUTH		0xfc2e
+#define ZD1201_RID_CNFGROUPADDRESS	0xfc80
+#define ZD1201_RID_CNFFRAGTHRESHOLD	0xfc82
+#define ZD1201_RID_CNFRTSTHRESHOLD	0xfc83
+#define ZD1201_RID_TXRATECNTL		0xfc84
+#define ZD1201_RID_PROMISCUOUSMODE	0xfc85
+#define ZD1201_RID_CNFBASICRATES	0xfcb3
+#define ZD1201_RID_AUTHENTICATESTA	0xfce3
+#define ZD1201_RID_CURRENTBSSID		0xfd42
+#define ZD1201_RID_COMMSQUALITY		0xfd43
+#define ZD1201_RID_CURRENTTXRATE	0xfd44
+#define ZD1201_RID_CNFMAXTXBUFFERNUMBER	0xfda0
+#define ZD1201_RID_CURRENTCHANNEL	0xfdc1
+
+#define ZD1201_INQ_SCANRESULTS		0xf101
+
+#define ZD1201_INF_LINKSTATUS		0xf200
+#define ZD1201_INF_ASSOCSTATUS		0xf201
+#define ZD1201_INF_AUTHREQ		0xf202
+
+#define ZD1201_ASSOCSTATUS_STAASSOC	0x1
+#define ZD1201_ASSOCSTATUS_REASSOC	0x2
+#define ZD1201_ASSOCSTATUS_DISASSOC	0x3
+#define ZD1201_ASSOCSTATUS_ASSOCFAIL	0x4
+#define ZD1201_ASSOCSTATUS_AUTHFAIL	0x5
+
+#define ZD1201_PORTTYPE_IBSS		0
+#define ZD1201_PORTTYPE_BSS		1
+#define ZD1201_PORTTYPE_WDS		2
+#define ZD1201_PORTTYPE_PSEUDOIBSS	3
+#define ZD1201_PORTTYPE_AP		6
+
+#define ZD1201_RATEB1	1
+#define ZD1201_RATEB2	2
+#define ZD1201_RATEB5	4	/* 5.5 really, but 5 is shorter :) */
+#define ZD1201_RATEB11	8
+
+#define ZD1201_CNFAUTHENTICATION_OPENSYSTEM	0x0001
+#define ZD1201_CNFAUTHENTICATION_SHAREDKEY	0x0002
+
+#endif /* _INCLUDE_ZD1201_H_ */
diff --git a/drivers/net/wireless/zydas/zd1211rw/Kconfig b/drivers/net/wireless/zydas/zd1211rw/Kconfig
new file mode 100644
index 000000000..f9da8c068
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/Kconfig
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config ZD1211RW
+	tristate "ZyDAS ZD1211/ZD1211B USB-wireless support"
+	depends on USB && MAC80211
+	select FW_LOADER
+	help
+	  This is a driver for the ZyDAS ZD1211/ZD1211B wireless
+	  chip, present in many USB-wireless adapters.
+
+	  Device firmware is required alongside this driver. You can download
+	  the firmware distribution from http://sf.net/projects/zd1211/files/
+
+config ZD1211RW_DEBUG
+	bool "ZyDAS ZD1211 debugging"
+	depends on ZD1211RW
+	help
+	  ZD1211 debugging messages. Choosing Y will result in additional debug
+	  messages being saved to your kernel logs, which may help debug any
+	  problems.
+
diff --git a/drivers/net/wireless/zydas/zd1211rw/Makefile b/drivers/net/wireless/zydas/zd1211rw/Makefile
new file mode 100644
index 000000000..1647a449c
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_ZD1211RW) += zd1211rw.o
+
+zd1211rw-objs := zd_chip.o zd_mac.o \
+		zd_rf_al2230.o zd_rf_rf2959.o \
+		zd_rf_al7230b.o zd_rf_uw2453.o \
+		zd_rf.o zd_usb.o
+
+ccflags-$(CONFIG_ZD1211RW_DEBUG) := -DDEBUG
+
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_chip.c b/drivers/net/wireless/zydas/zd1211rw/zd_chip.c
new file mode 100644
index 000000000..3bb51dc8d
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_chip.c
@@ -0,0 +1,1547 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+/* This file implements all the hardware specific functions for the ZD1211
+ * and ZD1211B chips. Support for the ZD1211B was possible after Timothy
+ * Legge sent me a ZD1211B device. Thank you Tim. -- Uli
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+
+#include "zd_def.h"
+#include "zd_chip.h"
+#include "zd_mac.h"
+#include "zd_rf.h"
+
+void zd_chip_init(struct zd_chip *chip,
+	         struct ieee80211_hw *hw,
+		 struct usb_interface *intf)
+{
+	memset(chip, 0, sizeof(*chip));
+	mutex_init(&chip->mutex);
+	zd_usb_init(&chip->usb, hw, intf);
+	zd_rf_init(&chip->rf);
+}
+
+void zd_chip_clear(struct zd_chip *chip)
+{
+	ZD_ASSERT(!mutex_is_locked(&chip->mutex));
+	zd_usb_clear(&chip->usb);
+	zd_rf_clear(&chip->rf);
+	mutex_destroy(&chip->mutex);
+	ZD_MEMCLEAR(chip, sizeof(*chip));
+}
+
+static int scnprint_mac_oui(struct zd_chip *chip, char *buffer, size_t size)
+{
+	u8 *addr = zd_mac_get_perm_addr(zd_chip_to_mac(chip));
+	return scnprintf(buffer, size, "%3phD", addr);
+}
+
+/* Prints an identifier line, which will support debugging. */
+static int scnprint_id(struct zd_chip *chip, char *buffer, size_t size)
+{
+	int i = 0;
+
+	i = scnprintf(buffer, size, "zd1211%s chip ",
+		      zd_chip_is_zd1211b(chip) ? "b" : "");
+	i += zd_usb_scnprint_id(&chip->usb, buffer+i, size-i);
+	i += scnprintf(buffer+i, size-i, " ");
+	i += scnprint_mac_oui(chip, buffer+i, size-i);
+	i += scnprintf(buffer+i, size-i, " ");
+	i += zd_rf_scnprint_id(&chip->rf, buffer+i, size-i);
+	i += scnprintf(buffer+i, size-i, " pa%1x %c%c%c%c%c", chip->pa_type,
+		chip->patch_cck_gain ? 'g' : '-',
+		chip->patch_cr157 ? '7' : '-',
+		chip->patch_6m_band_edge ? '6' : '-',
+		chip->new_phy_layout ? 'N' : '-',
+		chip->al2230s_bit ? 'S' : '-');
+	return i;
+}
+
+static void print_id(struct zd_chip *chip)
+{
+	char buffer[80];
+
+	scnprint_id(chip, buffer, sizeof(buffer));
+	buffer[sizeof(buffer)-1] = 0;
+	dev_info(zd_chip_dev(chip), "%s\n", buffer);
+}
+
+static zd_addr_t inc_addr(zd_addr_t addr)
+{
+	u16 a = (u16)addr;
+	/* Control registers use byte addressing, but everything else uses word
+	 * addressing. */
+	if ((a & 0xf000) == CR_START)
+		a += 2;
+	else
+		a += 1;
+	return (zd_addr_t)a;
+}
+
+/* Read a variable number of 32-bit values. Parameter count is not allowed to
+ * exceed USB_MAX_IOREAD32_COUNT.
+ */
+int zd_ioread32v_locked(struct zd_chip *chip, u32 *values, const zd_addr_t *addr,
+		 unsigned int count)
+{
+	int r;
+	int i;
+	zd_addr_t a16[USB_MAX_IOREAD32_COUNT * 2];
+	u16 v16[USB_MAX_IOREAD32_COUNT * 2];
+	unsigned int count16;
+
+	if (count > USB_MAX_IOREAD32_COUNT)
+		return -EINVAL;
+
+	/* Use stack for values and addresses. */
+	count16 = 2 * count;
+	BUG_ON(count16 * sizeof(zd_addr_t) > sizeof(a16));
+	BUG_ON(count16 * sizeof(u16) > sizeof(v16));
+
+	for (i = 0; i < count; i++) {
+		int j = 2*i;
+		/* We read the high word always first. */
+		a16[j] = inc_addr(addr[i]);
+		a16[j+1] = addr[i];
+	}
+
+	r = zd_ioread16v_locked(chip, v16, a16, count16);
+	if (r) {
+		dev_dbg_f(zd_chip_dev(chip),
+			  "error: %s. Error number %d\n", __func__, r);
+		return r;
+	}
+
+	for (i = 0; i < count; i++) {
+		int j = 2*i;
+		values[i] = (v16[j] << 16) | v16[j+1];
+	}
+
+	return 0;
+}
+
+static int _zd_iowrite32v_async_locked(struct zd_chip *chip,
+				       const struct zd_ioreq32 *ioreqs,
+				       unsigned int count)
+{
+	int i, j, r;
+	struct zd_ioreq16 ioreqs16[USB_MAX_IOWRITE32_COUNT * 2];
+	unsigned int count16;
+
+	/* Use stack for values and addresses. */
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+
+	if (count == 0)
+		return 0;
+	if (count > USB_MAX_IOWRITE32_COUNT)
+		return -EINVAL;
+
+	count16 = 2 * count;
+	BUG_ON(count16 * sizeof(struct zd_ioreq16) > sizeof(ioreqs16));
+
+	for (i = 0; i < count; i++) {
+		j = 2*i;
+		/* We write the high word always first. */
+		ioreqs16[j].value   = ioreqs[i].value >> 16;
+		ioreqs16[j].addr    = inc_addr(ioreqs[i].addr);
+		ioreqs16[j+1].value = ioreqs[i].value;
+		ioreqs16[j+1].addr  = ioreqs[i].addr;
+	}
+
+	r = zd_usb_iowrite16v_async(&chip->usb, ioreqs16, count16);
+#ifdef DEBUG
+	if (r) {
+		dev_dbg_f(zd_chip_dev(chip),
+			  "error %d in zd_usb_write16v\n", r);
+	}
+#endif /* DEBUG */
+	return r;
+}
+
+int _zd_iowrite32v_locked(struct zd_chip *chip, const struct zd_ioreq32 *ioreqs,
+			  unsigned int count)
+{
+	int r;
+
+	zd_usb_iowrite16v_async_start(&chip->usb);
+	r = _zd_iowrite32v_async_locked(chip, ioreqs, count);
+	if (r) {
+		zd_usb_iowrite16v_async_end(&chip->usb, 0);
+		return r;
+	}
+	return zd_usb_iowrite16v_async_end(&chip->usb, 50 /* ms */);
+}
+
+int zd_iowrite16a_locked(struct zd_chip *chip,
+                  const struct zd_ioreq16 *ioreqs, unsigned int count)
+{
+	int r;
+	unsigned int i, j, t, max;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	zd_usb_iowrite16v_async_start(&chip->usb);
+
+	for (i = 0; i < count; i += j + t) {
+		t = 0;
+		max = count-i;
+		if (max > USB_MAX_IOWRITE16_COUNT)
+			max = USB_MAX_IOWRITE16_COUNT;
+		for (j = 0; j < max; j++) {
+			if (!ioreqs[i+j].addr) {
+				t = 1;
+				break;
+			}
+		}
+
+		r = zd_usb_iowrite16v_async(&chip->usb, &ioreqs[i], j);
+		if (r) {
+			zd_usb_iowrite16v_async_end(&chip->usb, 0);
+			dev_dbg_f(zd_chip_dev(chip),
+				  "error zd_usb_iowrite16v. Error number %d\n",
+				  r);
+			return r;
+		}
+	}
+
+	return zd_usb_iowrite16v_async_end(&chip->usb, 50 /* ms */);
+}
+
+/* Writes a variable number of 32 bit registers. The functions will split
+ * that in several USB requests. A split can be forced by inserting an IO
+ * request with an zero address field.
+ */
+int zd_iowrite32a_locked(struct zd_chip *chip,
+	          const struct zd_ioreq32 *ioreqs, unsigned int count)
+{
+	int r;
+	unsigned int i, j, t, max;
+
+	zd_usb_iowrite16v_async_start(&chip->usb);
+
+	for (i = 0; i < count; i += j + t) {
+		t = 0;
+		max = count-i;
+		if (max > USB_MAX_IOWRITE32_COUNT)
+			max = USB_MAX_IOWRITE32_COUNT;
+		for (j = 0; j < max; j++) {
+			if (!ioreqs[i+j].addr) {
+				t = 1;
+				break;
+			}
+		}
+
+		r = _zd_iowrite32v_async_locked(chip, &ioreqs[i], j);
+		if (r) {
+			zd_usb_iowrite16v_async_end(&chip->usb, 0);
+			dev_dbg_f(zd_chip_dev(chip),
+				"error _%s. Error number %d\n", __func__,
+				r);
+			return r;
+		}
+	}
+
+	return zd_usb_iowrite16v_async_end(&chip->usb, 50 /* ms */);
+}
+
+int zd_ioread16(struct zd_chip *chip, zd_addr_t addr, u16 *value)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_ioread16_locked(chip, value, addr);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+int zd_ioread32(struct zd_chip *chip, zd_addr_t addr, u32 *value)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_ioread32_locked(chip, value, addr);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+int zd_iowrite16(struct zd_chip *chip, zd_addr_t addr, u16 value)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_iowrite16_locked(chip, value, addr);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+int zd_iowrite32(struct zd_chip *chip, zd_addr_t addr, u32 value)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_iowrite32_locked(chip, value, addr);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+int zd_ioread32v(struct zd_chip *chip, const zd_addr_t *addresses,
+	          u32 *values, unsigned int count)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_ioread32v_locked(chip, values, addresses, count);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+int zd_iowrite32a(struct zd_chip *chip, const struct zd_ioreq32 *ioreqs,
+	          unsigned int count)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_iowrite32a_locked(chip, ioreqs, count);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+static int read_pod(struct zd_chip *chip, u8 *rf_type)
+{
+	int r;
+	u32 value;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = zd_ioread32_locked(chip, &value, E2P_POD);
+	if (r)
+		goto error;
+	dev_dbg_f(zd_chip_dev(chip), "E2P_POD %#010x\n", value);
+
+	/* FIXME: AL2230 handling (Bit 7 in POD) */
+	*rf_type = value & 0x0f;
+	chip->pa_type = (value >> 16) & 0x0f;
+	chip->patch_cck_gain = (value >> 8) & 0x1;
+	chip->patch_cr157 = (value >> 13) & 0x1;
+	chip->patch_6m_band_edge = (value >> 21) & 0x1;
+	chip->new_phy_layout = (value >> 31) & 0x1;
+	chip->al2230s_bit = (value >> 7) & 0x1;
+	chip->link_led = ((value >> 4) & 1) ? LED1 : LED2;
+	chip->supports_tx_led = 1;
+	if (value & (1 << 24)) { /* LED scenario */
+		if (value & (1 << 29))
+			chip->supports_tx_led = 0;
+	}
+
+	dev_dbg_f(zd_chip_dev(chip),
+		"RF %s %#01x PA type %#01x patch CCK %d patch CR157 %d "
+		"patch 6M %d new PHY %d link LED%d tx led %d\n",
+		zd_rf_name(*rf_type), *rf_type,
+		chip->pa_type, chip->patch_cck_gain,
+		chip->patch_cr157, chip->patch_6m_band_edge,
+		chip->new_phy_layout,
+		chip->link_led == LED1 ? 1 : 2,
+		chip->supports_tx_led);
+	return 0;
+error:
+	*rf_type = 0;
+	chip->pa_type = 0;
+	chip->patch_cck_gain = 0;
+	chip->patch_cr157 = 0;
+	chip->patch_6m_band_edge = 0;
+	chip->new_phy_layout = 0;
+	return r;
+}
+
+static int zd_write_mac_addr_common(struct zd_chip *chip, const u8 *mac_addr,
+				    const struct zd_ioreq32 *in_reqs,
+				    const char *type)
+{
+	int r;
+	struct zd_ioreq32 reqs[2] = {in_reqs[0], in_reqs[1]};
+
+	if (mac_addr) {
+		reqs[0].value = (mac_addr[3] << 24)
+			      | (mac_addr[2] << 16)
+			      | (mac_addr[1] <<  8)
+			      |  mac_addr[0];
+		reqs[1].value = (mac_addr[5] <<  8)
+			      |  mac_addr[4];
+		dev_dbg_f(zd_chip_dev(chip), "%s addr %pM\n", type, mac_addr);
+	} else {
+		dev_dbg_f(zd_chip_dev(chip), "set NULL %s\n", type);
+	}
+
+	mutex_lock(&chip->mutex);
+	r = zd_iowrite32a_locked(chip, reqs, ARRAY_SIZE(reqs));
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+/* MAC address: if custom mac addresses are to be used CR_MAC_ADDR_P1 and
+ *              CR_MAC_ADDR_P2 must be overwritten
+ */
+int zd_write_mac_addr(struct zd_chip *chip, const u8 *mac_addr)
+{
+	static const struct zd_ioreq32 reqs[2] = {
+		[0] = { .addr = CR_MAC_ADDR_P1 },
+		[1] = { .addr = CR_MAC_ADDR_P2 },
+	};
+
+	return zd_write_mac_addr_common(chip, mac_addr, reqs, "mac");
+}
+
+int zd_write_bssid(struct zd_chip *chip, const u8 *bssid)
+{
+	static const struct zd_ioreq32 reqs[2] = {
+		[0] = { .addr = CR_BSSID_P1 },
+		[1] = { .addr = CR_BSSID_P2 },
+	};
+
+	return zd_write_mac_addr_common(chip, bssid, reqs, "bssid");
+}
+
+int zd_read_regdomain(struct zd_chip *chip, u8 *regdomain)
+{
+	int r;
+	u32 value;
+
+	mutex_lock(&chip->mutex);
+	r = zd_ioread32_locked(chip, &value, E2P_SUBID);
+	mutex_unlock(&chip->mutex);
+	if (r)
+		return r;
+
+	*regdomain = value >> 16;
+	dev_dbg_f(zd_chip_dev(chip), "regdomain: %#04x\n", *regdomain);
+
+	return 0;
+}
+
+static int read_values(struct zd_chip *chip, u8 *values, size_t count,
+	               zd_addr_t e2p_addr, u32 guard)
+{
+	int r;
+	int i;
+	u32 v;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	for (i = 0;;) {
+		r = zd_ioread32_locked(chip, &v,
+			               (zd_addr_t)((u16)e2p_addr+i/2));
+		if (r)
+			return r;
+		v -= guard;
+		if (i+4 < count) {
+			values[i++] = v;
+			values[i++] = v >>  8;
+			values[i++] = v >> 16;
+			values[i++] = v >> 24;
+			continue;
+		}
+		for (;i < count; i++)
+			values[i] = v >> (8*(i%3));
+		return 0;
+	}
+}
+
+static int read_pwr_cal_values(struct zd_chip *chip)
+{
+	return read_values(chip, chip->pwr_cal_values,
+		        E2P_CHANNEL_COUNT, E2P_PWR_CAL_VALUE1,
+			0);
+}
+
+static int read_pwr_int_values(struct zd_chip *chip)
+{
+	return read_values(chip, chip->pwr_int_values,
+		        E2P_CHANNEL_COUNT, E2P_PWR_INT_VALUE1,
+			E2P_PWR_INT_GUARD);
+}
+
+static int read_ofdm_cal_values(struct zd_chip *chip)
+{
+	int r;
+	int i;
+	static const zd_addr_t addresses[] = {
+		E2P_36M_CAL_VALUE1,
+		E2P_48M_CAL_VALUE1,
+		E2P_54M_CAL_VALUE1,
+	};
+
+	for (i = 0; i < 3; i++) {
+		r = read_values(chip, chip->ofdm_cal_values[i],
+				E2P_CHANNEL_COUNT, addresses[i], 0);
+		if (r)
+			return r;
+	}
+	return 0;
+}
+
+static int read_cal_int_tables(struct zd_chip *chip)
+{
+	int r;
+
+	r = read_pwr_cal_values(chip);
+	if (r)
+		return r;
+	r = read_pwr_int_values(chip);
+	if (r)
+		return r;
+	r = read_ofdm_cal_values(chip);
+	if (r)
+		return r;
+	return 0;
+}
+
+/* phy means physical registers */
+int zd_chip_lock_phy_regs(struct zd_chip *chip)
+{
+	int r;
+	u32 tmp;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = zd_ioread32_locked(chip, &tmp, CR_REG1);
+	if (r) {
+		dev_err(zd_chip_dev(chip), "error ioread32(CR_REG1): %d\n", r);
+		return r;
+	}
+
+	tmp &= ~UNLOCK_PHY_REGS;
+
+	r = zd_iowrite32_locked(chip, tmp, CR_REG1);
+	if (r)
+		dev_err(zd_chip_dev(chip), "error iowrite32(CR_REG1): %d\n", r);
+	return r;
+}
+
+int zd_chip_unlock_phy_regs(struct zd_chip *chip)
+{
+	int r;
+	u32 tmp;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = zd_ioread32_locked(chip, &tmp, CR_REG1);
+	if (r) {
+		dev_err(zd_chip_dev(chip),
+			"error ioread32(CR_REG1): %d\n", r);
+		return r;
+	}
+
+	tmp |= UNLOCK_PHY_REGS;
+
+	r = zd_iowrite32_locked(chip, tmp, CR_REG1);
+	if (r)
+		dev_err(zd_chip_dev(chip), "error iowrite32(CR_REG1): %d\n", r);
+	return r;
+}
+
+/* ZD_CR157 can be optionally patched by the EEPROM for original ZD1211 */
+static int patch_cr157(struct zd_chip *chip)
+{
+	int r;
+	u16 value;
+
+	if (!chip->patch_cr157)
+		return 0;
+
+	r = zd_ioread16_locked(chip, &value, E2P_PHY_REG);
+	if (r)
+		return r;
+
+	dev_dbg_f(zd_chip_dev(chip), "patching value %x\n", value >> 8);
+	return zd_iowrite32_locked(chip, value >> 8, ZD_CR157);
+}
+
+/*
+ * 6M band edge can be optionally overwritten for certain RF's
+ * Vendor driver says: for FCC regulation, enabled per HWFeature 6M band edge
+ * bit (for AL2230, AL2230S)
+ */
+static int patch_6m_band_edge(struct zd_chip *chip, u8 channel)
+{
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	if (!chip->patch_6m_band_edge)
+		return 0;
+
+	return zd_rf_patch_6m_band_edge(&chip->rf, channel);
+}
+
+/* Generic implementation of 6M band edge patching, used by most RFs via
+ * zd_rf_generic_patch_6m() */
+int zd_chip_generic_patch_6m_band(struct zd_chip *chip, int channel)
+{
+	struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
+		{ ZD_CR47,  0x1e },
+	};
+
+	/* FIXME: Channel 11 is not the edge for all regulatory domains. */
+	if (channel == 1 || channel == 11)
+		ioreqs[0].value = 0x12;
+
+	dev_dbg_f(zd_chip_dev(chip), "patching for channel %d\n", channel);
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int zd1211_hw_reset_phy(struct zd_chip *chip)
+{
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR0,   0x0a }, { ZD_CR1,   0x06 }, { ZD_CR2,   0x26 },
+		{ ZD_CR3,   0x38 }, { ZD_CR4,   0x80 }, { ZD_CR9,   0xa0 },
+		{ ZD_CR10,  0x81 }, { ZD_CR11,  0x00 }, { ZD_CR12,  0x7f },
+		{ ZD_CR13,  0x8c }, { ZD_CR14,  0x80 }, { ZD_CR15,  0x3d },
+		{ ZD_CR16,  0x20 }, { ZD_CR17,  0x1e }, { ZD_CR18,  0x0a },
+		{ ZD_CR19,  0x48 }, { ZD_CR20,  0x0c }, { ZD_CR21,  0x0c },
+		{ ZD_CR22,  0x23 }, { ZD_CR23,  0x90 }, { ZD_CR24,  0x14 },
+		{ ZD_CR25,  0x40 }, { ZD_CR26,  0x10 }, { ZD_CR27,  0x19 },
+		{ ZD_CR28,  0x7f }, { ZD_CR29,  0x80 }, { ZD_CR30,  0x4b },
+		{ ZD_CR31,  0x60 }, { ZD_CR32,  0x43 }, { ZD_CR33,  0x08 },
+		{ ZD_CR34,  0x06 }, { ZD_CR35,  0x0a }, { ZD_CR36,  0x00 },
+		{ ZD_CR37,  0x00 }, { ZD_CR38,  0x38 }, { ZD_CR39,  0x0c },
+		{ ZD_CR40,  0x84 }, { ZD_CR41,  0x2a }, { ZD_CR42,  0x80 },
+		{ ZD_CR43,  0x10 }, { ZD_CR44,  0x12 }, { ZD_CR46,  0xff },
+		{ ZD_CR47,  0x1E }, { ZD_CR48,  0x26 }, { ZD_CR49,  0x5b },
+		{ ZD_CR64,  0xd0 }, { ZD_CR65,  0x04 }, { ZD_CR66,  0x58 },
+		{ ZD_CR67,  0xc9 }, { ZD_CR68,  0x88 }, { ZD_CR69,  0x41 },
+		{ ZD_CR70,  0x23 }, { ZD_CR71,  0x10 }, { ZD_CR72,  0xff },
+		{ ZD_CR73,  0x32 }, { ZD_CR74,  0x30 }, { ZD_CR75,  0x65 },
+		{ ZD_CR76,  0x41 }, { ZD_CR77,  0x1b }, { ZD_CR78,  0x30 },
+		{ ZD_CR79,  0x68 }, { ZD_CR80,  0x64 }, { ZD_CR81,  0x64 },
+		{ ZD_CR82,  0x00 }, { ZD_CR83,  0x00 }, { ZD_CR84,  0x00 },
+		{ ZD_CR85,  0x02 }, { ZD_CR86,  0x00 }, { ZD_CR87,  0x00 },
+		{ ZD_CR88,  0xff }, { ZD_CR89,  0xfc }, { ZD_CR90,  0x00 },
+		{ ZD_CR91,  0x00 }, { ZD_CR92,  0x00 }, { ZD_CR93,  0x08 },
+		{ ZD_CR94,  0x00 }, { ZD_CR95,  0x00 }, { ZD_CR96,  0xff },
+		{ ZD_CR97,  0xe7 }, { ZD_CR98,  0x00 }, { ZD_CR99,  0x00 },
+		{ ZD_CR100, 0x00 }, { ZD_CR101, 0xae }, { ZD_CR102, 0x02 },
+		{ ZD_CR103, 0x00 }, { ZD_CR104, 0x03 }, { ZD_CR105, 0x65 },
+		{ ZD_CR106, 0x04 }, { ZD_CR107, 0x00 }, { ZD_CR108, 0x0a },
+		{ ZD_CR109, 0xaa }, { ZD_CR110, 0xaa }, { ZD_CR111, 0x25 },
+		{ ZD_CR112, 0x25 }, { ZD_CR113, 0x00 }, { ZD_CR119, 0x1e },
+		{ ZD_CR125, 0x90 }, { ZD_CR126, 0x00 }, { ZD_CR127, 0x00 },
+		{ },
+		{ ZD_CR5,   0x00 }, { ZD_CR6,   0x00 }, { ZD_CR7,   0x00 },
+		{ ZD_CR8,   0x00 }, { ZD_CR9,   0x20 }, { ZD_CR12,  0xf0 },
+		{ ZD_CR20,  0x0e }, { ZD_CR21,  0x0e }, { ZD_CR27,  0x10 },
+		{ ZD_CR44,  0x33 }, { ZD_CR47,  0x1E }, { ZD_CR83,  0x24 },
+		{ ZD_CR84,  0x04 }, { ZD_CR85,  0x00 }, { ZD_CR86,  0x0C },
+		{ ZD_CR87,  0x12 }, { ZD_CR88,  0x0C }, { ZD_CR89,  0x00 },
+		{ ZD_CR90,  0x10 }, { ZD_CR91,  0x08 }, { ZD_CR93,  0x00 },
+		{ ZD_CR94,  0x01 }, { ZD_CR95,  0x00 }, { ZD_CR96,  0x50 },
+		{ ZD_CR97,  0x37 }, { ZD_CR98,  0x35 }, { ZD_CR101, 0x13 },
+		{ ZD_CR102, 0x27 }, { ZD_CR103, 0x27 }, { ZD_CR104, 0x18 },
+		{ ZD_CR105, 0x12 }, { ZD_CR109, 0x27 }, { ZD_CR110, 0x27 },
+		{ ZD_CR111, 0x27 }, { ZD_CR112, 0x27 }, { ZD_CR113, 0x27 },
+		{ ZD_CR114, 0x27 }, { ZD_CR115, 0x26 }, { ZD_CR116, 0x24 },
+		{ ZD_CR117, 0xfc }, { ZD_CR118, 0xfa }, { ZD_CR120, 0x4f },
+		{ ZD_CR125, 0xaa }, { ZD_CR127, 0x03 }, { ZD_CR128, 0x14 },
+		{ ZD_CR129, 0x12 }, { ZD_CR130, 0x10 }, { ZD_CR131, 0x0C },
+		{ ZD_CR136, 0xdf }, { ZD_CR137, 0x40 }, { ZD_CR138, 0xa0 },
+		{ ZD_CR139, 0xb0 }, { ZD_CR140, 0x99 }, { ZD_CR141, 0x82 },
+		{ ZD_CR142, 0x54 }, { ZD_CR143, 0x1c }, { ZD_CR144, 0x6c },
+		{ ZD_CR147, 0x07 }, { ZD_CR148, 0x4c }, { ZD_CR149, 0x50 },
+		{ ZD_CR150, 0x0e }, { ZD_CR151, 0x18 }, { ZD_CR160, 0xfe },
+		{ ZD_CR161, 0xee }, { ZD_CR162, 0xaa }, { ZD_CR163, 0xfa },
+		{ ZD_CR164, 0xfa }, { ZD_CR165, 0xea }, { ZD_CR166, 0xbe },
+		{ ZD_CR167, 0xbe }, { ZD_CR168, 0x6a }, { ZD_CR169, 0xba },
+		{ ZD_CR170, 0xba }, { ZD_CR171, 0xba },
+		/* Note: ZD_CR204 must lead the ZD_CR203 */
+		{ ZD_CR204, 0x7d },
+		{ },
+		{ ZD_CR203, 0x30 },
+	};
+
+	int r, t;
+
+	dev_dbg_f(zd_chip_dev(chip), "\n");
+
+	r = zd_chip_lock_phy_regs(chip);
+	if (r)
+		goto out;
+
+	r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	if (r)
+		goto unlock;
+
+	r = patch_cr157(chip);
+unlock:
+	t = zd_chip_unlock_phy_regs(chip);
+	if (t && !r)
+		r = t;
+out:
+	return r;
+}
+
+static int zd1211b_hw_reset_phy(struct zd_chip *chip)
+{
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR0,   0x14 }, { ZD_CR1,   0x06 }, { ZD_CR2,   0x26 },
+		{ ZD_CR3,   0x38 }, { ZD_CR4,   0x80 }, { ZD_CR9,   0xe0 },
+		{ ZD_CR10,  0x81 },
+		/* power control { { ZD_CR11,  1 << 6 }, */
+		{ ZD_CR11,  0x00 },
+		{ ZD_CR12,  0xf0 }, { ZD_CR13,  0x8c }, { ZD_CR14,  0x80 },
+		{ ZD_CR15,  0x3d }, { ZD_CR16,  0x20 }, { ZD_CR17,  0x1e },
+		{ ZD_CR18,  0x0a }, { ZD_CR19,  0x48 },
+		{ ZD_CR20,  0x10 }, /* Org:0x0E, ComTrend:RalLink AP */
+		{ ZD_CR21,  0x0e }, { ZD_CR22,  0x23 }, { ZD_CR23,  0x90 },
+		{ ZD_CR24,  0x14 }, { ZD_CR25,  0x40 }, { ZD_CR26,  0x10 },
+		{ ZD_CR27,  0x10 }, { ZD_CR28,  0x7f }, { ZD_CR29,  0x80 },
+		{ ZD_CR30,  0x4b }, /* ASIC/FWT, no jointly decoder */
+		{ ZD_CR31,  0x60 }, { ZD_CR32,  0x43 }, { ZD_CR33,  0x08 },
+		{ ZD_CR34,  0x06 }, { ZD_CR35,  0x0a }, { ZD_CR36,  0x00 },
+		{ ZD_CR37,  0x00 }, { ZD_CR38,  0x38 }, { ZD_CR39,  0x0c },
+		{ ZD_CR40,  0x84 }, { ZD_CR41,  0x2a }, { ZD_CR42,  0x80 },
+		{ ZD_CR43,  0x10 }, { ZD_CR44,  0x33 }, { ZD_CR46,  0xff },
+		{ ZD_CR47,  0x1E }, { ZD_CR48,  0x26 }, { ZD_CR49,  0x5b },
+		{ ZD_CR64,  0xd0 }, { ZD_CR65,  0x04 }, { ZD_CR66,  0x58 },
+		{ ZD_CR67,  0xc9 }, { ZD_CR68,  0x88 }, { ZD_CR69,  0x41 },
+		{ ZD_CR70,  0x23 }, { ZD_CR71,  0x10 }, { ZD_CR72,  0xff },
+		{ ZD_CR73,  0x32 }, { ZD_CR74,  0x30 }, { ZD_CR75,  0x65 },
+		{ ZD_CR76,  0x41 }, { ZD_CR77,  0x1b }, { ZD_CR78,  0x30 },
+		{ ZD_CR79,  0xf0 }, { ZD_CR80,  0x64 }, { ZD_CR81,  0x64 },
+		{ ZD_CR82,  0x00 }, { ZD_CR83,  0x24 }, { ZD_CR84,  0x04 },
+		{ ZD_CR85,  0x00 }, { ZD_CR86,  0x0c }, { ZD_CR87,  0x12 },
+		{ ZD_CR88,  0x0c }, { ZD_CR89,  0x00 }, { ZD_CR90,  0x58 },
+		{ ZD_CR91,  0x04 }, { ZD_CR92,  0x00 }, { ZD_CR93,  0x00 },
+		{ ZD_CR94,  0x01 },
+		{ ZD_CR95,  0x20 }, /* ZD1211B */
+		{ ZD_CR96,  0x50 }, { ZD_CR97,  0x37 }, { ZD_CR98,  0x35 },
+		{ ZD_CR99,  0x00 }, { ZD_CR100, 0x01 }, { ZD_CR101, 0x13 },
+		{ ZD_CR102, 0x27 }, { ZD_CR103, 0x27 }, { ZD_CR104, 0x18 },
+		{ ZD_CR105, 0x12 }, { ZD_CR106, 0x04 }, { ZD_CR107, 0x00 },
+		{ ZD_CR108, 0x0a }, { ZD_CR109, 0x27 }, { ZD_CR110, 0x27 },
+		{ ZD_CR111, 0x27 }, { ZD_CR112, 0x27 }, { ZD_CR113, 0x27 },
+		{ ZD_CR114, 0x27 }, { ZD_CR115, 0x26 }, { ZD_CR116, 0x24 },
+		{ ZD_CR117, 0xfc }, { ZD_CR118, 0xfa }, { ZD_CR119, 0x1e },
+		{ ZD_CR125, 0x90 }, { ZD_CR126, 0x00 }, { ZD_CR127, 0x00 },
+		{ ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
+		{ ZD_CR131, 0x0c }, { ZD_CR136, 0xdf }, { ZD_CR137, 0xa0 },
+		{ ZD_CR138, 0xa8 }, { ZD_CR139, 0xb4 }, { ZD_CR140, 0x98 },
+		{ ZD_CR141, 0x82 }, { ZD_CR142, 0x53 }, { ZD_CR143, 0x1c },
+		{ ZD_CR144, 0x6c }, { ZD_CR147, 0x07 }, { ZD_CR148, 0x40 },
+		{ ZD_CR149, 0x40 }, /* Org:0x50 ComTrend:RalLink AP */
+		{ ZD_CR150, 0x14 }, /* Org:0x0E ComTrend:RalLink AP */
+		{ ZD_CR151, 0x18 }, { ZD_CR159, 0x70 }, { ZD_CR160, 0xfe },
+		{ ZD_CR161, 0xee }, { ZD_CR162, 0xaa }, { ZD_CR163, 0xfa },
+		{ ZD_CR164, 0xfa }, { ZD_CR165, 0xea }, { ZD_CR166, 0xbe },
+		{ ZD_CR167, 0xbe }, { ZD_CR168, 0x6a }, { ZD_CR169, 0xba },
+		{ ZD_CR170, 0xba }, { ZD_CR171, 0xba },
+		/* Note: ZD_CR204 must lead the ZD_CR203 */
+		{ ZD_CR204, 0x7d },
+		{},
+		{ ZD_CR203, 0x30 },
+	};
+
+	int r, t;
+
+	dev_dbg_f(zd_chip_dev(chip), "\n");
+
+	r = zd_chip_lock_phy_regs(chip);
+	if (r)
+		goto out;
+
+	r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	t = zd_chip_unlock_phy_regs(chip);
+	if (t && !r)
+		r = t;
+out:
+	return r;
+}
+
+static int hw_reset_phy(struct zd_chip *chip)
+{
+	return zd_chip_is_zd1211b(chip) ? zd1211b_hw_reset_phy(chip) :
+		                  zd1211_hw_reset_phy(chip);
+}
+
+static int zd1211_hw_init_hmac(struct zd_chip *chip)
+{
+	static const struct zd_ioreq32 ioreqs[] = {
+		{ CR_ZD1211_RETRY_MAX,		ZD1211_RETRY_COUNT },
+		{ CR_RX_THRESHOLD,		0x000c0640 },
+	};
+
+	dev_dbg_f(zd_chip_dev(chip), "\n");
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	return zd_iowrite32a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int zd1211b_hw_init_hmac(struct zd_chip *chip)
+{
+	static const struct zd_ioreq32 ioreqs[] = {
+		{ CR_ZD1211B_RETRY_MAX,		ZD1211B_RETRY_COUNT },
+		{ CR_ZD1211B_CWIN_MAX_MIN_AC0,	0x007f003f },
+		{ CR_ZD1211B_CWIN_MAX_MIN_AC1,	0x007f003f },
+		{ CR_ZD1211B_CWIN_MAX_MIN_AC2,  0x003f001f },
+		{ CR_ZD1211B_CWIN_MAX_MIN_AC3,  0x001f000f },
+		{ CR_ZD1211B_AIFS_CTL1,		0x00280028 },
+		{ CR_ZD1211B_AIFS_CTL2,		0x008C003C },
+		{ CR_ZD1211B_TXOP,		0x01800824 },
+		{ CR_RX_THRESHOLD,		0x000c0eff, },
+	};
+
+	dev_dbg_f(zd_chip_dev(chip), "\n");
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	return zd_iowrite32a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int hw_init_hmac(struct zd_chip *chip)
+{
+	int r;
+	static const struct zd_ioreq32 ioreqs[] = {
+		{ CR_ACK_TIMEOUT_EXT,		0x20 },
+		{ CR_ADDA_MBIAS_WARMTIME,	0x30000808 },
+		{ CR_SNIFFER_ON,		0 },
+		{ CR_RX_FILTER,			STA_RX_FILTER },
+		{ CR_GROUP_HASH_P1,		0x00 },
+		{ CR_GROUP_HASH_P2,		0x80000000 },
+		{ CR_REG1,			0xa4 },
+		{ CR_ADDA_PWR_DWN,		0x7f },
+		{ CR_BCN_PLCP_CFG,		0x00f00401 },
+		{ CR_PHY_DELAY,			0x00 },
+		{ CR_ACK_TIMEOUT_EXT,		0x80 },
+		{ CR_ADDA_PWR_DWN,		0x00 },
+		{ CR_ACK_TIME_80211,		0x100 },
+		{ CR_RX_PE_DELAY,		0x70 },
+		{ CR_PS_CTRL,			0x10000000 },
+		{ CR_RTS_CTS_RATE,		0x02030203 },
+		{ CR_AFTER_PNP,			0x1 },
+		{ CR_WEP_PROTECT,		0x114 },
+		{ CR_IFS_VALUE,			IFS_VALUE_DEFAULT },
+		{ CR_CAM_MODE,			MODE_AP_WDS},
+	};
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = zd_iowrite32a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	if (r)
+		return r;
+
+	return zd_chip_is_zd1211b(chip) ?
+		zd1211b_hw_init_hmac(chip) : zd1211_hw_init_hmac(chip);
+}
+
+struct aw_pt_bi {
+	u32 atim_wnd_period;
+	u32 pre_tbtt;
+	u32 beacon_interval;
+};
+
+static int get_aw_pt_bi(struct zd_chip *chip, struct aw_pt_bi *s)
+{
+	int r;
+	static const zd_addr_t aw_pt_bi_addr[] =
+		{ CR_ATIM_WND_PERIOD, CR_PRE_TBTT, CR_BCN_INTERVAL };
+	u32 values[3];
+
+	r = zd_ioread32v_locked(chip, values, (const zd_addr_t *)aw_pt_bi_addr,
+		         ARRAY_SIZE(aw_pt_bi_addr));
+	if (r) {
+		memset(s, 0, sizeof(*s));
+		return r;
+	}
+
+	s->atim_wnd_period = values[0];
+	s->pre_tbtt = values[1];
+	s->beacon_interval = values[2];
+	return 0;
+}
+
+static int set_aw_pt_bi(struct zd_chip *chip, struct aw_pt_bi *s)
+{
+	struct zd_ioreq32 reqs[3];
+	u16 b_interval = s->beacon_interval & 0xffff;
+
+	if (b_interval <= 5)
+		b_interval = 5;
+	if (s->pre_tbtt < 4 || s->pre_tbtt >= b_interval)
+		s->pre_tbtt = b_interval - 1;
+	if (s->atim_wnd_period >= s->pre_tbtt)
+		s->atim_wnd_period = s->pre_tbtt - 1;
+
+	reqs[0].addr = CR_ATIM_WND_PERIOD;
+	reqs[0].value = s->atim_wnd_period;
+	reqs[1].addr = CR_PRE_TBTT;
+	reqs[1].value = s->pre_tbtt;
+	reqs[2].addr = CR_BCN_INTERVAL;
+	reqs[2].value = (s->beacon_interval & ~0xffff) | b_interval;
+
+	return zd_iowrite32a_locked(chip, reqs, ARRAY_SIZE(reqs));
+}
+
+
+static int set_beacon_interval(struct zd_chip *chip, u16 interval,
+			       u8 dtim_period, int type)
+{
+	int r;
+	struct aw_pt_bi s;
+	u32 b_interval, mode_flag;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+
+	if (interval > 0) {
+		switch (type) {
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_MESH_POINT:
+			mode_flag = BCN_MODE_IBSS;
+			break;
+		case NL80211_IFTYPE_AP:
+			mode_flag = BCN_MODE_AP;
+			break;
+		default:
+			mode_flag = 0;
+			break;
+		}
+	} else {
+		dtim_period = 0;
+		mode_flag = 0;
+	}
+
+	b_interval = mode_flag | (dtim_period << 16) | interval;
+
+	r = zd_iowrite32_locked(chip, b_interval, CR_BCN_INTERVAL);
+	if (r)
+		return r;
+	r = get_aw_pt_bi(chip, &s);
+	if (r)
+		return r;
+	return set_aw_pt_bi(chip, &s);
+}
+
+int zd_set_beacon_interval(struct zd_chip *chip, u16 interval, u8 dtim_period,
+			   int type)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = set_beacon_interval(chip, interval, dtim_period, type);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+static int hw_init(struct zd_chip *chip)
+{
+	int r;
+
+	dev_dbg_f(zd_chip_dev(chip), "\n");
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = hw_reset_phy(chip);
+	if (r)
+		return r;
+
+	r = hw_init_hmac(chip);
+	if (r)
+		return r;
+
+	return set_beacon_interval(chip, 100, 0, NL80211_IFTYPE_UNSPECIFIED);
+}
+
+static zd_addr_t fw_reg_addr(struct zd_chip *chip, u16 offset)
+{
+	return (zd_addr_t)((u16)chip->fw_regs_base + offset);
+}
+
+#ifdef DEBUG
+static int dump_cr(struct zd_chip *chip, const zd_addr_t addr,
+	           const char *addr_string)
+{
+	int r;
+	u32 value;
+
+	r = zd_ioread32_locked(chip, &value, addr);
+	if (r) {
+		dev_dbg_f(zd_chip_dev(chip),
+			"error reading %s. Error number %d\n", addr_string, r);
+		return r;
+	}
+
+	dev_dbg_f(zd_chip_dev(chip), "%s %#010x\n",
+		addr_string, (unsigned int)value);
+	return 0;
+}
+
+static int test_init(struct zd_chip *chip)
+{
+	int r;
+
+	r = dump_cr(chip, CR_AFTER_PNP, "CR_AFTER_PNP");
+	if (r)
+		return r;
+	r = dump_cr(chip, CR_GPI_EN, "CR_GPI_EN");
+	if (r)
+		return r;
+	return dump_cr(chip, CR_INTERRUPT, "CR_INTERRUPT");
+}
+
+static void dump_fw_registers(struct zd_chip *chip)
+{
+	const zd_addr_t addr[4] = {
+		fw_reg_addr(chip, FW_REG_FIRMWARE_VER),
+		fw_reg_addr(chip, FW_REG_USB_SPEED),
+		fw_reg_addr(chip, FW_REG_FIX_TX_RATE),
+		fw_reg_addr(chip, FW_REG_LED_LINK_STATUS),
+	};
+
+	int r;
+	u16 values[4];
+
+	r = zd_ioread16v_locked(chip, values, (const zd_addr_t*)addr,
+		         ARRAY_SIZE(addr));
+	if (r) {
+		dev_dbg_f(zd_chip_dev(chip), "error %d zd_ioread16v_locked\n",
+			 r);
+		return;
+	}
+
+	dev_dbg_f(zd_chip_dev(chip), "FW_FIRMWARE_VER %#06hx\n", values[0]);
+	dev_dbg_f(zd_chip_dev(chip), "FW_USB_SPEED %#06hx\n", values[1]);
+	dev_dbg_f(zd_chip_dev(chip), "FW_FIX_TX_RATE %#06hx\n", values[2]);
+	dev_dbg_f(zd_chip_dev(chip), "FW_LINK_STATUS %#06hx\n", values[3]);
+}
+#endif /* DEBUG */
+
+static int print_fw_version(struct zd_chip *chip)
+{
+	struct wiphy *wiphy = zd_chip_to_mac(chip)->hw->wiphy;
+	int r;
+	u16 version;
+
+	r = zd_ioread16_locked(chip, &version,
+		fw_reg_addr(chip, FW_REG_FIRMWARE_VER));
+	if (r)
+		return r;
+
+	dev_info(zd_chip_dev(chip),"firmware version %04hx\n", version);
+
+	snprintf(wiphy->fw_version, sizeof(wiphy->fw_version),
+			"%04hx", version);
+
+	return 0;
+}
+
+static int set_mandatory_rates(struct zd_chip *chip, int gmode)
+{
+	u32 rates;
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	/* This sets the mandatory rates, which only depend from the standard
+	 * that the device is supporting. Until further notice we should try
+	 * to support 802.11g also for full speed USB.
+	 */
+	if (!gmode)
+		rates = CR_RATE_1M|CR_RATE_2M|CR_RATE_5_5M|CR_RATE_11M;
+	else
+		rates = CR_RATE_1M|CR_RATE_2M|CR_RATE_5_5M|CR_RATE_11M|
+			CR_RATE_6M|CR_RATE_12M|CR_RATE_24M;
+
+	return zd_iowrite32_locked(chip, rates, CR_MANDATORY_RATE_TBL);
+}
+
+int zd_chip_set_rts_cts_rate_locked(struct zd_chip *chip,
+				    int preamble)
+{
+	u32 value = 0;
+
+	dev_dbg_f(zd_chip_dev(chip), "preamble=%x\n", preamble);
+	value |= preamble << RTSCTS_SH_RTS_PMB_TYPE;
+	value |= preamble << RTSCTS_SH_CTS_PMB_TYPE;
+
+	/* We always send 11M RTS/self-CTS messages, like the vendor driver. */
+	value |= ZD_PURE_RATE(ZD_CCK_RATE_11M) << RTSCTS_SH_RTS_RATE;
+	value |= ZD_RX_CCK << RTSCTS_SH_RTS_MOD_TYPE;
+	value |= ZD_PURE_RATE(ZD_CCK_RATE_11M) << RTSCTS_SH_CTS_RATE;
+	value |= ZD_RX_CCK << RTSCTS_SH_CTS_MOD_TYPE;
+
+	return zd_iowrite32_locked(chip, value, CR_RTS_CTS_RATE);
+}
+
+int zd_chip_enable_hwint(struct zd_chip *chip)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_iowrite32_locked(chip, HWINT_ENABLED, CR_INTERRUPT);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+static int disable_hwint(struct zd_chip *chip)
+{
+	return zd_iowrite32_locked(chip, HWINT_DISABLED, CR_INTERRUPT);
+}
+
+int zd_chip_disable_hwint(struct zd_chip *chip)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = disable_hwint(chip);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+static int read_fw_regs_offset(struct zd_chip *chip)
+{
+	int r;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = zd_ioread16_locked(chip, (u16*)&chip->fw_regs_base,
+		               FWRAW_REGS_ADDR);
+	if (r)
+		return r;
+	dev_dbg_f(zd_chip_dev(chip), "fw_regs_base: %#06hx\n",
+		  (u16)chip->fw_regs_base);
+
+	return 0;
+}
+
+/* Read mac address using pre-firmware interface */
+int zd_chip_read_mac_addr_fw(struct zd_chip *chip, u8 *addr)
+{
+	dev_dbg_f(zd_chip_dev(chip), "\n");
+	return zd_usb_read_fw(&chip->usb, E2P_MAC_ADDR_P1, addr,
+		ETH_ALEN);
+}
+
+int zd_chip_init_hw(struct zd_chip *chip)
+{
+	int r;
+	u8 rf_type;
+
+	dev_dbg_f(zd_chip_dev(chip), "\n");
+
+	mutex_lock(&chip->mutex);
+
+#ifdef DEBUG
+	r = test_init(chip);
+	if (r)
+		goto out;
+#endif
+	r = zd_iowrite32_locked(chip, 1, CR_AFTER_PNP);
+	if (r)
+		goto out;
+
+	r = read_fw_regs_offset(chip);
+	if (r)
+		goto out;
+
+	/* GPI is always disabled, also in the other driver.
+	 */
+	r = zd_iowrite32_locked(chip, 0, CR_GPI_EN);
+	if (r)
+		goto out;
+	r = zd_iowrite32_locked(chip, CWIN_SIZE, CR_CWMIN_CWMAX);
+	if (r)
+		goto out;
+	/* Currently we support IEEE 802.11g for full and high speed USB.
+	 * It might be discussed, whether we should support pure b mode for
+	 * full speed USB.
+	 */
+	r = set_mandatory_rates(chip, 1);
+	if (r)
+		goto out;
+	/* Disabling interrupts is certainly a smart thing here.
+	 */
+	r = disable_hwint(chip);
+	if (r)
+		goto out;
+	r = read_pod(chip, &rf_type);
+	if (r)
+		goto out;
+	r = hw_init(chip);
+	if (r)
+		goto out;
+	r = zd_rf_init_hw(&chip->rf, rf_type);
+	if (r)
+		goto out;
+
+	r = print_fw_version(chip);
+	if (r)
+		goto out;
+
+#ifdef DEBUG
+	dump_fw_registers(chip);
+	r = test_init(chip);
+	if (r)
+		goto out;
+#endif /* DEBUG */
+
+	r = read_cal_int_tables(chip);
+	if (r)
+		goto out;
+
+	print_id(chip);
+out:
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+static int update_pwr_int(struct zd_chip *chip, u8 channel)
+{
+	u8 value = chip->pwr_int_values[channel - 1];
+	return zd_iowrite16_locked(chip, value, ZD_CR31);
+}
+
+static int update_pwr_cal(struct zd_chip *chip, u8 channel)
+{
+	u8 value = chip->pwr_cal_values[channel-1];
+	return zd_iowrite16_locked(chip, value, ZD_CR68);
+}
+
+static int update_ofdm_cal(struct zd_chip *chip, u8 channel)
+{
+	struct zd_ioreq16 ioreqs[3];
+
+	ioreqs[0].addr = ZD_CR67;
+	ioreqs[0].value = chip->ofdm_cal_values[OFDM_36M_INDEX][channel-1];
+	ioreqs[1].addr = ZD_CR66;
+	ioreqs[1].value = chip->ofdm_cal_values[OFDM_48M_INDEX][channel-1];
+	ioreqs[2].addr = ZD_CR65;
+	ioreqs[2].value = chip->ofdm_cal_values[OFDM_54M_INDEX][channel-1];
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int update_channel_integration_and_calibration(struct zd_chip *chip,
+	                                              u8 channel)
+{
+	int r;
+
+	if (!zd_rf_should_update_pwr_int(&chip->rf))
+		return 0;
+
+	r = update_pwr_int(chip, channel);
+	if (r)
+		return r;
+	if (zd_chip_is_zd1211b(chip)) {
+		static const struct zd_ioreq16 ioreqs[] = {
+			{ ZD_CR69, 0x28 },
+			{},
+			{ ZD_CR69, 0x2a },
+		};
+
+		r = update_ofdm_cal(chip, channel);
+		if (r)
+			return r;
+		r = update_pwr_cal(chip, channel);
+		if (r)
+			return r;
+		r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+		if (r)
+			return r;
+	}
+
+	return 0;
+}
+
+/* The CCK baseband gain can be optionally patched by the EEPROM */
+static int patch_cck_gain(struct zd_chip *chip)
+{
+	int r;
+	u32 value;
+
+	if (!chip->patch_cck_gain || !zd_rf_should_patch_cck_gain(&chip->rf))
+		return 0;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = zd_ioread32_locked(chip, &value, E2P_PHY_REG);
+	if (r)
+		return r;
+	dev_dbg_f(zd_chip_dev(chip), "patching value %x\n", value & 0xff);
+	return zd_iowrite16_locked(chip, value & 0xff, ZD_CR47);
+}
+
+int zd_chip_set_channel(struct zd_chip *chip, u8 channel)
+{
+	int r, t;
+
+	mutex_lock(&chip->mutex);
+	r = zd_chip_lock_phy_regs(chip);
+	if (r)
+		goto out;
+	r = zd_rf_set_channel(&chip->rf, channel);
+	if (r)
+		goto unlock;
+	r = update_channel_integration_and_calibration(chip, channel);
+	if (r)
+		goto unlock;
+	r = patch_cck_gain(chip);
+	if (r)
+		goto unlock;
+	r = patch_6m_band_edge(chip, channel);
+	if (r)
+		goto unlock;
+	r = zd_iowrite32_locked(chip, 0, CR_CONFIG_PHILIPS);
+unlock:
+	t = zd_chip_unlock_phy_regs(chip);
+	if (t && !r)
+		r = t;
+out:
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+u8 zd_chip_get_channel(struct zd_chip *chip)
+{
+	u8 channel;
+
+	mutex_lock(&chip->mutex);
+	channel = chip->rf.channel;
+	mutex_unlock(&chip->mutex);
+	return channel;
+}
+
+int zd_chip_control_leds(struct zd_chip *chip, enum led_status status)
+{
+	const zd_addr_t a[] = {
+		fw_reg_addr(chip, FW_REG_LED_LINK_STATUS),
+		CR_LED,
+	};
+
+	int r;
+	u16 v[ARRAY_SIZE(a)];
+	struct zd_ioreq16 ioreqs[ARRAY_SIZE(a)] = {
+		[0] = { fw_reg_addr(chip, FW_REG_LED_LINK_STATUS) },
+		[1] = { CR_LED },
+	};
+	u16 other_led;
+
+	mutex_lock(&chip->mutex);
+	r = zd_ioread16v_locked(chip, v, (const zd_addr_t *)a, ARRAY_SIZE(a));
+	if (r)
+		goto out;
+
+	other_led = chip->link_led == LED1 ? LED2 : LED1;
+
+	switch (status) {
+	case ZD_LED_OFF:
+		ioreqs[0].value = FW_LINK_OFF;
+		ioreqs[1].value = v[1] & ~(LED1|LED2);
+		break;
+	case ZD_LED_SCANNING:
+		ioreqs[0].value = FW_LINK_OFF;
+		ioreqs[1].value = v[1] & ~other_led;
+		if ((u32)ktime_get_seconds() % 3 == 0) {
+			ioreqs[1].value &= ~chip->link_led;
+		} else {
+			ioreqs[1].value |= chip->link_led;
+		}
+		break;
+	case ZD_LED_ASSOCIATED:
+		ioreqs[0].value = FW_LINK_TX;
+		ioreqs[1].value = v[1] & ~other_led;
+		ioreqs[1].value |= chip->link_led;
+		break;
+	default:
+		r = -EINVAL;
+		goto out;
+	}
+
+	if (v[0] != ioreqs[0].value || v[1] != ioreqs[1].value) {
+		r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+		if (r)
+			goto out;
+	}
+	r = 0;
+out:
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates)
+{
+	int r;
+
+	if (cr_rates & ~(CR_RATES_80211B|CR_RATES_80211G))
+		return -EINVAL;
+
+	mutex_lock(&chip->mutex);
+	r = zd_iowrite32_locked(chip, cr_rates, CR_BASIC_RATE_TBL);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+static inline u8 zd_rate_from_ofdm_plcp_header(const void *rx_frame)
+{
+	return ZD_OFDM | zd_ofdm_plcp_header_rate(rx_frame);
+}
+
+/**
+ * zd_rx_rate - report zd-rate
+ * @rx_frame: received frame
+ * @status: rx_status as given by the device
+ *
+ * This function converts the rate as encoded in the received packet to the
+ * zd-rate, we are using on other places in the driver.
+ */
+u8 zd_rx_rate(const void *rx_frame, const struct rx_status *status)
+{
+	u8 zd_rate;
+	if (status->frame_status & ZD_RX_OFDM) {
+		zd_rate = zd_rate_from_ofdm_plcp_header(rx_frame);
+	} else {
+		switch (zd_cck_plcp_header_signal(rx_frame)) {
+		case ZD_CCK_PLCP_SIGNAL_1M:
+			zd_rate = ZD_CCK_RATE_1M;
+			break;
+		case ZD_CCK_PLCP_SIGNAL_2M:
+			zd_rate = ZD_CCK_RATE_2M;
+			break;
+		case ZD_CCK_PLCP_SIGNAL_5M5:
+			zd_rate = ZD_CCK_RATE_5_5M;
+			break;
+		case ZD_CCK_PLCP_SIGNAL_11M:
+			zd_rate = ZD_CCK_RATE_11M;
+			break;
+		default:
+			zd_rate = 0;
+		}
+	}
+
+	return zd_rate;
+}
+
+int zd_chip_switch_radio_on(struct zd_chip *chip)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_switch_radio_on(&chip->rf);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+int zd_chip_switch_radio_off(struct zd_chip *chip)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_switch_radio_off(&chip->rf);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+int zd_chip_enable_int(struct zd_chip *chip)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	r = zd_usb_enable_int(&chip->usb);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+void zd_chip_disable_int(struct zd_chip *chip)
+{
+	mutex_lock(&chip->mutex);
+	zd_usb_disable_int(&chip->usb);
+	mutex_unlock(&chip->mutex);
+
+	/* cancel pending interrupt work */
+	cancel_work_sync(&zd_chip_to_mac(chip)->process_intr);
+}
+
+int zd_chip_enable_rxtx(struct zd_chip *chip)
+{
+	int r;
+
+	mutex_lock(&chip->mutex);
+	zd_usb_enable_tx(&chip->usb);
+	r = zd_usb_enable_rx(&chip->usb);
+	zd_tx_watchdog_enable(&chip->usb);
+	mutex_unlock(&chip->mutex);
+	return r;
+}
+
+void zd_chip_disable_rxtx(struct zd_chip *chip)
+{
+	mutex_lock(&chip->mutex);
+	zd_tx_watchdog_disable(&chip->usb);
+	zd_usb_disable_rx(&chip->usb);
+	zd_usb_disable_tx(&chip->usb);
+	mutex_unlock(&chip->mutex);
+}
+
+int zd_rfwritev_locked(struct zd_chip *chip,
+	               const u32* values, unsigned int count, u8 bits)
+{
+	int r;
+	unsigned int i;
+
+	for (i = 0; i < count; i++) {
+		r = zd_rfwrite_locked(chip, values[i], bits);
+		if (r)
+			return r;
+	}
+
+	return 0;
+}
+
+/*
+ * We can optionally program the RF directly through CR regs, if supported by
+ * the hardware. This is much faster than the older method.
+ */
+int zd_rfwrite_cr_locked(struct zd_chip *chip, u32 value)
+{
+	const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR244, (value >> 16) & 0xff },
+		{ ZD_CR243, (value >>  8) & 0xff },
+		{ ZD_CR242,  value        & 0xff },
+	};
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+int zd_rfwritev_cr_locked(struct zd_chip *chip,
+	                  const u32 *values, unsigned int count)
+{
+	int r;
+	unsigned int i;
+
+	for (i = 0; i < count; i++) {
+		r = zd_rfwrite_cr_locked(chip, values[i]);
+		if (r)
+			return r;
+	}
+
+	return 0;
+}
+
+int zd_chip_set_multicast_hash(struct zd_chip *chip,
+	                       struct zd_mc_hash *hash)
+{
+	const struct zd_ioreq32 ioreqs[] = {
+		{ CR_GROUP_HASH_P1, hash->low },
+		{ CR_GROUP_HASH_P2, hash->high },
+	};
+
+	return zd_iowrite32a(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+u64 zd_chip_get_tsf(struct zd_chip *chip)
+{
+	int r;
+	static const zd_addr_t aw_pt_bi_addr[] =
+		{ CR_TSF_LOW_PART, CR_TSF_HIGH_PART };
+	u32 values[2];
+	u64 tsf;
+
+	mutex_lock(&chip->mutex);
+	r = zd_ioread32v_locked(chip, values, (const zd_addr_t *)aw_pt_bi_addr,
+	                        ARRAY_SIZE(aw_pt_bi_addr));
+	mutex_unlock(&chip->mutex);
+	if (r)
+		return 0;
+
+	tsf = values[1];
+	tsf = (tsf << 32) | values[0];
+
+	return tsf;
+}
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_chip.h b/drivers/net/wireless/zydas/zd1211rw/zd_chip.h
new file mode 100644
index 000000000..70a1548eb
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_chip.h
@@ -0,0 +1,971 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#ifndef _ZD_CHIP_H
+#define _ZD_CHIP_H
+
+#include <net/mac80211.h>
+
+#include "zd_rf.h"
+#include "zd_usb.h"
+
+/* Header for the Media Access Controller (MAC) and the Baseband Processor
+ * (BBP). It appears that the ZD1211 wraps the old ZD1205 with USB glue and
+ * adds a processor for handling the USB protocol.
+ */
+
+/* Address space */
+enum {
+	/* CONTROL REGISTERS */
+	CR_START			= 0x9000,
+
+
+	/* FIRMWARE */
+	FW_START			= 0xee00,
+
+
+	/* EEPROM */
+	E2P_START			= 0xf800,
+	E2P_LEN				= 0x800,
+
+	/* EEPROM layout */
+	E2P_LOAD_CODE_LEN		= 0xe,		/* base 0xf800 */
+	E2P_LOAD_VECT_LEN		= 0x9,		/* base 0xf80e */
+	/* E2P_DATA indexes into this */
+	E2P_DATA_LEN			= 0x7e,		/* base 0xf817 */
+	E2P_BOOT_CODE_LEN		= 0x760,	/* base 0xf895 */
+	E2P_INTR_VECT_LEN		= 0xb,		/* base 0xfff5 */
+
+	/* Some precomputed offsets into the EEPROM */
+	E2P_DATA_OFFSET			= E2P_LOAD_CODE_LEN + E2P_LOAD_VECT_LEN,
+	E2P_BOOT_CODE_OFFSET		= E2P_DATA_OFFSET + E2P_DATA_LEN,
+};
+
+#define CTL_REG(offset) ((zd_addr_t)(CR_START + (offset)))
+#define E2P_DATA(offset) ((zd_addr_t)(E2P_START + E2P_DATA_OFFSET + (offset)))
+#define FWRAW_DATA(offset) ((zd_addr_t)(FW_START + (offset)))
+
+/* 8-bit hardware registers */
+#define ZD_CR0   CTL_REG(0x0000)
+#define ZD_CR1   CTL_REG(0x0004)
+#define ZD_CR2   CTL_REG(0x0008)
+#define ZD_CR3   CTL_REG(0x000C)
+
+#define ZD_CR5   CTL_REG(0x0010)
+/*	bit 5: if set short preamble used
+ *	bit 6: filter band - Japan channel 14 on, else off
+ */
+#define ZD_CR6   CTL_REG(0x0014)
+#define ZD_CR7   CTL_REG(0x0018)
+#define ZD_CR8   CTL_REG(0x001C)
+
+#define ZD_CR4   CTL_REG(0x0020)
+
+#define ZD_CR9   CTL_REG(0x0024)
+/*	bit 2: antenna switch (together with ZD_CR10) */
+#define ZD_CR10  CTL_REG(0x0028)
+/*	bit 1: antenna switch (together with ZD_CR9)
+ *	RF2959 controls with ZD_CR11 radion on and off
+ */
+#define ZD_CR11  CTL_REG(0x002C)
+/*	bit 6:  TX power control for OFDM
+ *	RF2959 controls with ZD_CR10 radio on and off
+ */
+#define ZD_CR12  CTL_REG(0x0030)
+#define ZD_CR13  CTL_REG(0x0034)
+#define ZD_CR14  CTL_REG(0x0038)
+#define ZD_CR15  CTL_REG(0x003C)
+#define ZD_CR16  CTL_REG(0x0040)
+#define ZD_CR17  CTL_REG(0x0044)
+#define ZD_CR18  CTL_REG(0x0048)
+#define ZD_CR19  CTL_REG(0x004C)
+#define ZD_CR20  CTL_REG(0x0050)
+#define ZD_CR21  CTL_REG(0x0054)
+#define ZD_CR22  CTL_REG(0x0058)
+#define ZD_CR23  CTL_REG(0x005C)
+#define ZD_CR24  CTL_REG(0x0060)	/* CCA threshold */
+#define ZD_CR25  CTL_REG(0x0064)
+#define ZD_CR26  CTL_REG(0x0068)
+#define ZD_CR27  CTL_REG(0x006C)
+#define ZD_CR28  CTL_REG(0x0070)
+#define ZD_CR29  CTL_REG(0x0074)
+#define ZD_CR30  CTL_REG(0x0078)
+#define ZD_CR31  CTL_REG(0x007C)	/* TX power control for RF in
+					 * CCK mode
+					 */
+#define ZD_CR32  CTL_REG(0x0080)
+#define ZD_CR33  CTL_REG(0x0084)
+#define ZD_CR34  CTL_REG(0x0088)
+#define ZD_CR35  CTL_REG(0x008C)
+#define ZD_CR36  CTL_REG(0x0090)
+#define ZD_CR37  CTL_REG(0x0094)
+#define ZD_CR38  CTL_REG(0x0098)
+#define ZD_CR39  CTL_REG(0x009C)
+#define ZD_CR40  CTL_REG(0x00A0)
+#define ZD_CR41  CTL_REG(0x00A4)
+#define ZD_CR42  CTL_REG(0x00A8)
+#define ZD_CR43  CTL_REG(0x00AC)
+#define ZD_CR44  CTL_REG(0x00B0)
+#define ZD_CR45  CTL_REG(0x00B4)
+#define ZD_CR46  CTL_REG(0x00B8)
+#define ZD_CR47  CTL_REG(0x00BC)	/* CCK baseband gain
+					 * (patch value might be in EEPROM)
+					 */
+#define ZD_CR48  CTL_REG(0x00C0)
+#define ZD_CR49  CTL_REG(0x00C4)
+#define ZD_CR50  CTL_REG(0x00C8)
+#define ZD_CR51  CTL_REG(0x00CC)	/* TX power control for RF in
+					 * 6-36M modes
+					 */
+#define ZD_CR52  CTL_REG(0x00D0)	/* TX power control for RF in
+					 * 48M mode
+					 */
+#define ZD_CR53  CTL_REG(0x00D4)	/* TX power control for RF in
+					 * 54M mode
+					 */
+#define ZD_CR54  CTL_REG(0x00D8)
+#define ZD_CR55  CTL_REG(0x00DC)
+#define ZD_CR56  CTL_REG(0x00E0)
+#define ZD_CR57  CTL_REG(0x00E4)
+#define ZD_CR58  CTL_REG(0x00E8)
+#define ZD_CR59  CTL_REG(0x00EC)
+#define ZD_CR60  CTL_REG(0x00F0)
+#define ZD_CR61  CTL_REG(0x00F4)
+#define ZD_CR62  CTL_REG(0x00F8)
+#define ZD_CR63  CTL_REG(0x00FC)
+#define ZD_CR64  CTL_REG(0x0100)
+#define ZD_CR65  CTL_REG(0x0104) /* OFDM 54M calibration */
+#define ZD_CR66  CTL_REG(0x0108) /* OFDM 48M calibration */
+#define ZD_CR67  CTL_REG(0x010C) /* OFDM 36M calibration */
+#define ZD_CR68  CTL_REG(0x0110) /* CCK calibration */
+#define ZD_CR69  CTL_REG(0x0114)
+#define ZD_CR70  CTL_REG(0x0118)
+#define ZD_CR71  CTL_REG(0x011C)
+#define ZD_CR72  CTL_REG(0x0120)
+#define ZD_CR73  CTL_REG(0x0124)
+#define ZD_CR74  CTL_REG(0x0128)
+#define ZD_CR75  CTL_REG(0x012C)
+#define ZD_CR76  CTL_REG(0x0130)
+#define ZD_CR77  CTL_REG(0x0134)
+#define ZD_CR78  CTL_REG(0x0138)
+#define ZD_CR79  CTL_REG(0x013C)
+#define ZD_CR80  CTL_REG(0x0140)
+#define ZD_CR81  CTL_REG(0x0144)
+#define ZD_CR82  CTL_REG(0x0148)
+#define ZD_CR83  CTL_REG(0x014C)
+#define ZD_CR84  CTL_REG(0x0150)
+#define ZD_CR85  CTL_REG(0x0154)
+#define ZD_CR86  CTL_REG(0x0158)
+#define ZD_CR87  CTL_REG(0x015C)
+#define ZD_CR88  CTL_REG(0x0160)
+#define ZD_CR89  CTL_REG(0x0164)
+#define ZD_CR90  CTL_REG(0x0168)
+#define ZD_CR91  CTL_REG(0x016C)
+#define ZD_CR92  CTL_REG(0x0170)
+#define ZD_CR93  CTL_REG(0x0174)
+#define ZD_CR94  CTL_REG(0x0178)
+#define ZD_CR95  CTL_REG(0x017C)
+#define ZD_CR96  CTL_REG(0x0180)
+#define ZD_CR97  CTL_REG(0x0184)
+#define ZD_CR98  CTL_REG(0x0188)
+#define ZD_CR99  CTL_REG(0x018C)
+#define ZD_CR100 CTL_REG(0x0190)
+#define ZD_CR101 CTL_REG(0x0194)
+#define ZD_CR102 CTL_REG(0x0198)
+#define ZD_CR103 CTL_REG(0x019C)
+#define ZD_CR104 CTL_REG(0x01A0)
+#define ZD_CR105 CTL_REG(0x01A4)
+#define ZD_CR106 CTL_REG(0x01A8)
+#define ZD_CR107 CTL_REG(0x01AC)
+#define ZD_CR108 CTL_REG(0x01B0)
+#define ZD_CR109 CTL_REG(0x01B4)
+#define ZD_CR110 CTL_REG(0x01B8)
+#define ZD_CR111 CTL_REG(0x01BC)
+#define ZD_CR112 CTL_REG(0x01C0)
+#define ZD_CR113 CTL_REG(0x01C4)
+#define ZD_CR114 CTL_REG(0x01C8)
+#define ZD_CR115 CTL_REG(0x01CC)
+#define ZD_CR116 CTL_REG(0x01D0)
+#define ZD_CR117 CTL_REG(0x01D4)
+#define ZD_CR118 CTL_REG(0x01D8)
+#define ZD_CR119 CTL_REG(0x01DC)
+#define ZD_CR120 CTL_REG(0x01E0)
+#define ZD_CR121 CTL_REG(0x01E4)
+#define ZD_CR122 CTL_REG(0x01E8)
+#define ZD_CR123 CTL_REG(0x01EC)
+#define ZD_CR124 CTL_REG(0x01F0)
+#define ZD_CR125 CTL_REG(0x01F4)
+#define ZD_CR126 CTL_REG(0x01F8)
+#define ZD_CR127 CTL_REG(0x01FC)
+#define ZD_CR128 CTL_REG(0x0200)
+#define ZD_CR129 CTL_REG(0x0204)
+#define ZD_CR130 CTL_REG(0x0208)
+#define ZD_CR131 CTL_REG(0x020C)
+#define ZD_CR132 CTL_REG(0x0210)
+#define ZD_CR133 CTL_REG(0x0214)
+#define ZD_CR134 CTL_REG(0x0218)
+#define ZD_CR135 CTL_REG(0x021C)
+#define ZD_CR136 CTL_REG(0x0220)
+#define ZD_CR137 CTL_REG(0x0224)
+#define ZD_CR138 CTL_REG(0x0228)
+#define ZD_CR139 CTL_REG(0x022C)
+#define ZD_CR140 CTL_REG(0x0230)
+#define ZD_CR141 CTL_REG(0x0234)
+#define ZD_CR142 CTL_REG(0x0238)
+#define ZD_CR143 CTL_REG(0x023C)
+#define ZD_CR144 CTL_REG(0x0240)
+#define ZD_CR145 CTL_REG(0x0244)
+#define ZD_CR146 CTL_REG(0x0248)
+#define ZD_CR147 CTL_REG(0x024C)
+#define ZD_CR148 CTL_REG(0x0250)
+#define ZD_CR149 CTL_REG(0x0254)
+#define ZD_CR150 CTL_REG(0x0258)
+#define ZD_CR151 CTL_REG(0x025C)
+#define ZD_CR152 CTL_REG(0x0260)
+#define ZD_CR153 CTL_REG(0x0264)
+#define ZD_CR154 CTL_REG(0x0268)
+#define ZD_CR155 CTL_REG(0x026C)
+#define ZD_CR156 CTL_REG(0x0270)
+#define ZD_CR157 CTL_REG(0x0274)
+#define ZD_CR158 CTL_REG(0x0278)
+#define ZD_CR159 CTL_REG(0x027C)
+#define ZD_CR160 CTL_REG(0x0280)
+#define ZD_CR161 CTL_REG(0x0284)
+#define ZD_CR162 CTL_REG(0x0288)
+#define ZD_CR163 CTL_REG(0x028C)
+#define ZD_CR164 CTL_REG(0x0290)
+#define ZD_CR165 CTL_REG(0x0294)
+#define ZD_CR166 CTL_REG(0x0298)
+#define ZD_CR167 CTL_REG(0x029C)
+#define ZD_CR168 CTL_REG(0x02A0)
+#define ZD_CR169 CTL_REG(0x02A4)
+#define ZD_CR170 CTL_REG(0x02A8)
+#define ZD_CR171 CTL_REG(0x02AC)
+#define ZD_CR172 CTL_REG(0x02B0)
+#define ZD_CR173 CTL_REG(0x02B4)
+#define ZD_CR174 CTL_REG(0x02B8)
+#define ZD_CR175 CTL_REG(0x02BC)
+#define ZD_CR176 CTL_REG(0x02C0)
+#define ZD_CR177 CTL_REG(0x02C4)
+#define ZD_CR178 CTL_REG(0x02C8)
+#define ZD_CR179 CTL_REG(0x02CC)
+#define ZD_CR180 CTL_REG(0x02D0)
+#define ZD_CR181 CTL_REG(0x02D4)
+#define ZD_CR182 CTL_REG(0x02D8)
+#define ZD_CR183 CTL_REG(0x02DC)
+#define ZD_CR184 CTL_REG(0x02E0)
+#define ZD_CR185 CTL_REG(0x02E4)
+#define ZD_CR186 CTL_REG(0x02E8)
+#define ZD_CR187 CTL_REG(0x02EC)
+#define ZD_CR188 CTL_REG(0x02F0)
+#define ZD_CR189 CTL_REG(0x02F4)
+#define ZD_CR190 CTL_REG(0x02F8)
+#define ZD_CR191 CTL_REG(0x02FC)
+#define ZD_CR192 CTL_REG(0x0300)
+#define ZD_CR193 CTL_REG(0x0304)
+#define ZD_CR194 CTL_REG(0x0308)
+#define ZD_CR195 CTL_REG(0x030C)
+#define ZD_CR196 CTL_REG(0x0310)
+#define ZD_CR197 CTL_REG(0x0314)
+#define ZD_CR198 CTL_REG(0x0318)
+#define ZD_CR199 CTL_REG(0x031C)
+#define ZD_CR200 CTL_REG(0x0320)
+#define ZD_CR201 CTL_REG(0x0324)
+#define ZD_CR202 CTL_REG(0x0328)
+#define ZD_CR203 CTL_REG(0x032C)	/* I2C bus template value & flash
+					 * control
+					 */
+#define ZD_CR204 CTL_REG(0x0330)
+#define ZD_CR205 CTL_REG(0x0334)
+#define ZD_CR206 CTL_REG(0x0338)
+#define ZD_CR207 CTL_REG(0x033C)
+#define ZD_CR208 CTL_REG(0x0340)
+#define ZD_CR209 CTL_REG(0x0344)
+#define ZD_CR210 CTL_REG(0x0348)
+#define ZD_CR211 CTL_REG(0x034C)
+#define ZD_CR212 CTL_REG(0x0350)
+#define ZD_CR213 CTL_REG(0x0354)
+#define ZD_CR214 CTL_REG(0x0358)
+#define ZD_CR215 CTL_REG(0x035C)
+#define ZD_CR216 CTL_REG(0x0360)
+#define ZD_CR217 CTL_REG(0x0364)
+#define ZD_CR218 CTL_REG(0x0368)
+#define ZD_CR219 CTL_REG(0x036C)
+#define ZD_CR220 CTL_REG(0x0370)
+#define ZD_CR221 CTL_REG(0x0374)
+#define ZD_CR222 CTL_REG(0x0378)
+#define ZD_CR223 CTL_REG(0x037C)
+#define ZD_CR224 CTL_REG(0x0380)
+#define ZD_CR225 CTL_REG(0x0384)
+#define ZD_CR226 CTL_REG(0x0388)
+#define ZD_CR227 CTL_REG(0x038C)
+#define ZD_CR228 CTL_REG(0x0390)
+#define ZD_CR229 CTL_REG(0x0394)
+#define ZD_CR230 CTL_REG(0x0398)
+#define ZD_CR231 CTL_REG(0x039C)
+#define ZD_CR232 CTL_REG(0x03A0)
+#define ZD_CR233 CTL_REG(0x03A4)
+#define ZD_CR234 CTL_REG(0x03A8)
+#define ZD_CR235 CTL_REG(0x03AC)
+#define ZD_CR236 CTL_REG(0x03B0)
+
+#define ZD_CR240 CTL_REG(0x03C0)
+/*             bit 7: host-controlled RF register writes
+ * ZD_CR241-ZD_CR245: for hardware controlled writing of RF bits, not needed for
+ *                    USB
+ */
+#define ZD_CR241 CTL_REG(0x03C4)
+#define ZD_CR242 CTL_REG(0x03C8)
+#define ZD_CR243 CTL_REG(0x03CC)
+#define ZD_CR244 CTL_REG(0x03D0)
+#define ZD_CR245 CTL_REG(0x03D4)
+
+#define ZD_CR251 CTL_REG(0x03EC)	/* only used for activation and
+					 * deactivation of Airoha RFs AL2230
+					 * and AL7230B
+					 */
+#define ZD_CR252 CTL_REG(0x03F0)
+#define ZD_CR253 CTL_REG(0x03F4)
+#define ZD_CR254 CTL_REG(0x03F8)
+#define ZD_CR255 CTL_REG(0x03FC)
+
+#define CR_MAX_PHY_REG 255
+
+/* Taken from the ZYDAS driver, not all of them are relevant for the ZD1211
+ * driver.
+ */
+
+#define CR_RF_IF_CLK			CTL_REG(0x0400)
+#define CR_RF_IF_DATA			CTL_REG(0x0404)
+#define CR_PE1_PE2			CTL_REG(0x0408)
+#define CR_PE2_DLY			CTL_REG(0x040C)
+#define CR_LE1				CTL_REG(0x0410)
+#define CR_LE2				CTL_REG(0x0414)
+/* Seems to enable/disable GPI (General Purpose IO?) */
+#define CR_GPI_EN			CTL_REG(0x0418)
+#define CR_RADIO_PD			CTL_REG(0x042C)
+#define CR_RF2948_PD			CTL_REG(0x042C)
+#define CR_ENABLE_PS_MANUAL_AGC		CTL_REG(0x043C)
+#define CR_CONFIG_PHILIPS		CTL_REG(0x0440)
+#define CR_SA2400_SER_AP		CTL_REG(0x0444)
+#define CR_I2C_WRITE			CTL_REG(0x0444)
+#define CR_SA2400_SER_RP		CTL_REG(0x0448)
+#define CR_RADIO_PE			CTL_REG(0x0458)
+#define CR_RST_BUS_MASTER		CTL_REG(0x045C)
+#define CR_RFCFG			CTL_REG(0x0464)
+#define CR_HSTSCHG			CTL_REG(0x046C)
+#define CR_PHY_ON			CTL_REG(0x0474)
+#define CR_RX_DELAY			CTL_REG(0x0478)
+#define CR_RX_PE_DELAY			CTL_REG(0x047C)
+#define CR_GPIO_1			CTL_REG(0x0490)
+#define CR_GPIO_2			CTL_REG(0x0494)
+#define CR_EncryBufMux			CTL_REG(0x04A8)
+#define CR_PS_CTRL			CTL_REG(0x0500)
+#define CR_ADDA_PWR_DWN			CTL_REG(0x0504)
+#define CR_ADDA_MBIAS_WARMTIME		CTL_REG(0x0508)
+#define CR_MAC_PS_STATE			CTL_REG(0x050C)
+
+#define CR_INTERRUPT			CTL_REG(0x0510)
+#define INT_TX_COMPLETE			(1 <<  0)
+#define INT_RX_COMPLETE			(1 <<  1)
+#define INT_RETRY_FAIL			(1 <<  2)
+#define INT_WAKEUP			(1 <<  3)
+#define INT_DTIM_NOTIFY			(1 <<  5)
+#define INT_CFG_NEXT_BCN		(1 <<  6)
+#define INT_BUS_ABORT			(1 <<  7)
+#define INT_TX_FIFO_READY		(1 <<  8)
+#define INT_UART			(1 <<  9)
+#define INT_TX_COMPLETE_EN		(1 << 16)
+#define INT_RX_COMPLETE_EN		(1 << 17)
+#define INT_RETRY_FAIL_EN		(1 << 18)
+#define INT_WAKEUP_EN			(1 << 19)
+#define INT_DTIM_NOTIFY_EN		(1 << 21)
+#define INT_CFG_NEXT_BCN_EN		(1 << 22)
+#define INT_BUS_ABORT_EN		(1 << 23)
+#define INT_TX_FIFO_READY_EN		(1 << 24)
+#define INT_UART_EN			(1 << 25)
+
+#define CR_TSF_LOW_PART			CTL_REG(0x0514)
+#define CR_TSF_HIGH_PART		CTL_REG(0x0518)
+
+/* Following three values are in time units (1024us)
+ * Following condition must be met:
+ * atim < tbtt < bcn
+ */
+#define CR_ATIM_WND_PERIOD		CTL_REG(0x051C)
+#define CR_BCN_INTERVAL			CTL_REG(0x0520)
+#define CR_PRE_TBTT			CTL_REG(0x0524)
+/* in units of TU(1024us) */
+
+/* for UART support */
+#define CR_UART_RBR_THR_DLL		CTL_REG(0x0540)
+#define CR_UART_DLM_IER			CTL_REG(0x0544)
+#define CR_UART_IIR_FCR			CTL_REG(0x0548)
+#define CR_UART_LCR			CTL_REG(0x054c)
+#define CR_UART_MCR			CTL_REG(0x0550)
+#define CR_UART_LSR			CTL_REG(0x0554)
+#define CR_UART_MSR			CTL_REG(0x0558)
+#define CR_UART_ECR			CTL_REG(0x055c)
+#define CR_UART_STATUS			CTL_REG(0x0560)
+
+#define CR_PCI_TX_ADDR_P1		CTL_REG(0x0600)
+#define CR_PCI_TX_AddR_P2		CTL_REG(0x0604)
+#define CR_PCI_RX_AddR_P1		CTL_REG(0x0608)
+#define CR_PCI_RX_AddR_P2		CTL_REG(0x060C)
+
+/* must be overwritten if custom MAC address will be used */
+#define CR_MAC_ADDR_P1			CTL_REG(0x0610)
+#define CR_MAC_ADDR_P2			CTL_REG(0x0614)
+#define CR_BSSID_P1			CTL_REG(0x0618)
+#define CR_BSSID_P2			CTL_REG(0x061C)
+#define CR_BCN_PLCP_CFG			CTL_REG(0x0620)
+
+/* Group hash table for filtering incoming packets.
+ *
+ * The group hash table is 64 bit large and split over two parts. The first
+ * part is the lower part. The upper 6 bits of the last byte of the target
+ * address are used as index. Packets are received if the hash table bit is
+ * set. This is used for multicast handling, but for broadcasts (address
+ * ff:ff:ff:ff:ff:ff) the highest bit in the second table must also be set.
+ */
+#define CR_GROUP_HASH_P1		CTL_REG(0x0624)
+#define CR_GROUP_HASH_P2		CTL_REG(0x0628)
+
+#define CR_RX_TIMEOUT			CTL_REG(0x062C)
+
+/* Basic rates supported by the BSS. When producing ACK or CTS messages, the
+ * device will use a rate in this table that is less than or equal to the rate
+ * of the incoming frame which prompted the response. */
+#define CR_BASIC_RATE_TBL		CTL_REG(0x0630)
+#define CR_RATE_1M	(1 <<  0)	/* 802.11b */
+#define CR_RATE_2M	(1 <<  1)	/* 802.11b */
+#define CR_RATE_5_5M	(1 <<  2)	/* 802.11b */
+#define CR_RATE_11M	(1 <<  3)	/* 802.11b */
+#define CR_RATE_6M      (1 <<  8)	/* 802.11g */
+#define CR_RATE_9M      (1 <<  9)	/* 802.11g */
+#define CR_RATE_12M	(1 << 10)	/* 802.11g */
+#define CR_RATE_18M	(1 << 11)	/* 802.11g */
+#define CR_RATE_24M     (1 << 12)	/* 802.11g */
+#define CR_RATE_36M     (1 << 13)	/* 802.11g */
+#define CR_RATE_48M     (1 << 14)	/* 802.11g */
+#define CR_RATE_54M     (1 << 15)	/* 802.11g */
+#define CR_RATES_80211G	0xff00
+#define CR_RATES_80211B	0x000f
+
+/* Mandatory rates required in the BSS. When producing ACK or CTS messages, if
+ * the device could not find an appropriate rate in CR_BASIC_RATE_TBL, it will
+ * look for a rate in this table that is less than or equal to the rate of
+ * the incoming frame. */
+#define CR_MANDATORY_RATE_TBL		CTL_REG(0x0634)
+#define CR_RTS_CTS_RATE			CTL_REG(0x0638)
+
+/* These are all bit indexes in CR_RTS_CTS_RATE, so remember to shift. */
+#define RTSCTS_SH_RTS_RATE		0
+#define RTSCTS_SH_EXP_CTS_RATE		4
+#define RTSCTS_SH_RTS_MOD_TYPE		8
+#define RTSCTS_SH_RTS_PMB_TYPE		9
+#define RTSCTS_SH_CTS_RATE		16
+#define RTSCTS_SH_CTS_MOD_TYPE		24
+#define RTSCTS_SH_CTS_PMB_TYPE		25
+
+#define CR_WEP_PROTECT			CTL_REG(0x063C)
+#define CR_RX_THRESHOLD			CTL_REG(0x0640)
+
+/* register for controlling the LEDS */
+#define CR_LED				CTL_REG(0x0644)
+/* masks for controlling LEDs */
+#define LED1				(1 <<  8)
+#define LED2				(1 <<  9)
+#define LED_SW				(1 << 10)
+
+/* Seems to indicate that the configuration is over.
+ */
+#define CR_AFTER_PNP			CTL_REG(0x0648)
+#define CR_ACK_TIME_80211		CTL_REG(0x0658)
+
+#define CR_RX_OFFSET			CTL_REG(0x065c)
+
+#define CR_BCN_LENGTH			CTL_REG(0x0664)
+#define CR_PHY_DELAY			CTL_REG(0x066C)
+#define CR_BCN_FIFO			CTL_REG(0x0670)
+#define CR_SNIFFER_ON			CTL_REG(0x0674)
+
+#define CR_ENCRYPTION_TYPE		CTL_REG(0x0678)
+#define NO_WEP				0
+#define WEP64				1
+#define WEP128				5
+#define WEP256				6
+#define ENC_SNIFFER			8
+
+#define CR_ZD1211_RETRY_MAX		CTL_REG(0x067C)
+
+#define CR_REG1				CTL_REG(0x0680)
+/* Setting the bit UNLOCK_PHY_REGS disallows the write access to physical
+ * registers, so one could argue it is a LOCK bit. But calling it
+ * LOCK_PHY_REGS makes it confusing.
+ */
+#define UNLOCK_PHY_REGS			(1 << 7)
+
+#define CR_DEVICE_STATE			CTL_REG(0x0684)
+#define CR_UNDERRUN_CNT			CTL_REG(0x0688)
+
+#define CR_RX_FILTER			CTL_REG(0x068c)
+#define RX_FILTER_ASSOC_REQUEST		(1 <<  0)
+#define RX_FILTER_ASSOC_RESPONSE	(1 <<  1)
+#define RX_FILTER_REASSOC_REQUEST	(1 <<  2)
+#define RX_FILTER_REASSOC_RESPONSE	(1 <<  3)
+#define RX_FILTER_PROBE_REQUEST		(1 <<  4)
+#define RX_FILTER_PROBE_RESPONSE	(1 <<  5)
+/* bits 6 and 7 reserved */
+#define RX_FILTER_BEACON		(1 <<  8)
+#define RX_FILTER_ATIM			(1 <<  9)
+#define RX_FILTER_DISASSOC		(1 << 10)
+#define RX_FILTER_AUTH			(1 << 11)
+#define RX_FILTER_DEAUTH		(1 << 12)
+#define RX_FILTER_PSPOLL		(1 << 26)
+#define RX_FILTER_RTS			(1 << 27)
+#define RX_FILTER_CTS			(1 << 28)
+#define RX_FILTER_ACK			(1 << 29)
+#define RX_FILTER_CFEND			(1 << 30)
+#define RX_FILTER_CFACK			(1 << 31)
+
+/* Enable bits for all frames you are interested in. */
+#define STA_RX_FILTER	(RX_FILTER_ASSOC_REQUEST | RX_FILTER_ASSOC_RESPONSE | \
+	RX_FILTER_REASSOC_REQUEST | RX_FILTER_REASSOC_RESPONSE | \
+	RX_FILTER_PROBE_REQUEST | RX_FILTER_PROBE_RESPONSE | \
+	(0x3 << 6) /* vendor driver sets these reserved bits */ | \
+	RX_FILTER_BEACON | RX_FILTER_ATIM | RX_FILTER_DISASSOC | \
+	RX_FILTER_AUTH | RX_FILTER_DEAUTH | \
+	(0x7 << 13) /* vendor driver sets these reserved bits */ | \
+	RX_FILTER_PSPOLL | RX_FILTER_ACK) /* 0x2400ffff */
+
+#define RX_FILTER_CTRL (RX_FILTER_RTS | RX_FILTER_CTS | \
+	RX_FILTER_CFEND | RX_FILTER_CFACK)
+
+#define BCN_MODE_AP			0x1000000
+#define BCN_MODE_IBSS			0x2000000
+
+/* Monitor mode sets filter to 0xfffff */
+
+#define CR_ACK_TIMEOUT_EXT		CTL_REG(0x0690)
+#define CR_BCN_FIFO_SEMAPHORE		CTL_REG(0x0694)
+
+#define CR_IFS_VALUE			CTL_REG(0x0698)
+#define IFS_VALUE_DIFS_SH		0
+#define IFS_VALUE_EIFS_SH		12
+#define IFS_VALUE_SIFS_SH		24
+#define IFS_VALUE_DEFAULT		((  50 << IFS_VALUE_DIFS_SH) | \
+					 (1148 << IFS_VALUE_EIFS_SH) | \
+					 (  10 << IFS_VALUE_SIFS_SH))
+
+#define CR_RX_TIME_OUT			CTL_REG(0x069C)
+#define CR_TOTAL_RX_FRM			CTL_REG(0x06A0)
+#define CR_CRC32_CNT			CTL_REG(0x06A4)
+#define CR_CRC16_CNT			CTL_REG(0x06A8)
+#define CR_DECRYPTION_ERR_UNI		CTL_REG(0x06AC)
+#define CR_RX_FIFO_OVERRUN		CTL_REG(0x06B0)
+
+#define CR_DECRYPTION_ERR_MUL		CTL_REG(0x06BC)
+
+#define CR_NAV_CNT			CTL_REG(0x06C4)
+#define CR_NAV_CCA			CTL_REG(0x06C8)
+#define CR_RETRY_CNT			CTL_REG(0x06CC)
+
+#define CR_READ_TCB_ADDR		CTL_REG(0x06E8)
+#define CR_READ_RFD_ADDR		CTL_REG(0x06EC)
+#define CR_CWMIN_CWMAX			CTL_REG(0x06F0)
+#define CR_TOTAL_TX_FRM			CTL_REG(0x06F4)
+
+/* CAM: Continuous Access Mode (power management) */
+#define CR_CAM_MODE			CTL_REG(0x0700)
+#define MODE_IBSS			0x0
+#define MODE_AP				0x1
+#define MODE_STA			0x2
+#define MODE_AP_WDS			0x3
+
+#define CR_CAM_ROLL_TB_LOW		CTL_REG(0x0704)
+#define CR_CAM_ROLL_TB_HIGH		CTL_REG(0x0708)
+#define CR_CAM_ADDRESS			CTL_REG(0x070C)
+#define CR_CAM_DATA			CTL_REG(0x0710)
+
+#define CR_ROMDIR			CTL_REG(0x0714)
+
+#define CR_DECRY_ERR_FLG_LOW		CTL_REG(0x0714)
+#define CR_DECRY_ERR_FLG_HIGH		CTL_REG(0x0718)
+
+#define CR_WEPKEY0			CTL_REG(0x0720)
+#define CR_WEPKEY1			CTL_REG(0x0724)
+#define CR_WEPKEY2			CTL_REG(0x0728)
+#define CR_WEPKEY3			CTL_REG(0x072C)
+#define CR_WEPKEY4			CTL_REG(0x0730)
+#define CR_WEPKEY5			CTL_REG(0x0734)
+#define CR_WEPKEY6			CTL_REG(0x0738)
+#define CR_WEPKEY7			CTL_REG(0x073C)
+#define CR_WEPKEY8			CTL_REG(0x0740)
+#define CR_WEPKEY9			CTL_REG(0x0744)
+#define CR_WEPKEY10			CTL_REG(0x0748)
+#define CR_WEPKEY11			CTL_REG(0x074C)
+#define CR_WEPKEY12			CTL_REG(0x0750)
+#define CR_WEPKEY13			CTL_REG(0x0754)
+#define CR_WEPKEY14			CTL_REG(0x0758)
+#define CR_WEPKEY15			CTL_REG(0x075c)
+#define CR_TKIP_MODE			CTL_REG(0x0760)
+
+#define CR_EEPROM_PROTECT0		CTL_REG(0x0758)
+#define CR_EEPROM_PROTECT1		CTL_REG(0x075C)
+
+#define CR_DBG_FIFO_RD			CTL_REG(0x0800)
+#define CR_DBG_SELECT			CTL_REG(0x0804)
+#define CR_FIFO_Length			CTL_REG(0x0808)
+
+
+#define CR_RSSI_MGC			CTL_REG(0x0810)
+
+#define CR_PON				CTL_REG(0x0818)
+#define CR_RX_ON			CTL_REG(0x081C)
+#define CR_TX_ON			CTL_REG(0x0820)
+#define CR_CHIP_EN			CTL_REG(0x0824)
+#define CR_LO_SW			CTL_REG(0x0828)
+#define CR_TXRX_SW			CTL_REG(0x082C)
+#define CR_S_MD				CTL_REG(0x0830)
+
+#define CR_USB_DEBUG_PORT		CTL_REG(0x0888)
+#define CR_ZD1211B_CWIN_MAX_MIN_AC0	CTL_REG(0x0b00)
+#define CR_ZD1211B_CWIN_MAX_MIN_AC1	CTL_REG(0x0b04)
+#define CR_ZD1211B_CWIN_MAX_MIN_AC2	CTL_REG(0x0b08)
+#define CR_ZD1211B_CWIN_MAX_MIN_AC3	CTL_REG(0x0b0c)
+#define CR_ZD1211B_AIFS_CTL1		CTL_REG(0x0b10)
+#define CR_ZD1211B_AIFS_CTL2		CTL_REG(0x0b14)
+#define CR_ZD1211B_TXOP			CTL_REG(0x0b20)
+#define CR_ZD1211B_RETRY_MAX		CTL_REG(0x0b28)
+
+/* Value for CR_ZD1211_RETRY_MAX & CR_ZD1211B_RETRY_MAX. Vendor driver uses 2,
+ * we use 0. The first rate is tried (count+2), then all next rates are tried
+ * twice, until 1 Mbits is tried. */
+#define	ZD1211_RETRY_COUNT		0
+#define	ZD1211B_RETRY_COUNT	\
+	(ZD1211_RETRY_COUNT <<  0)|	\
+	(ZD1211_RETRY_COUNT <<  8)|	\
+	(ZD1211_RETRY_COUNT << 16)|	\
+	(ZD1211_RETRY_COUNT << 24)
+
+/* Used to detect PLL lock */
+#define UW2453_INTR_REG			((zd_addr_t)0x85c1)
+
+#define CWIN_SIZE			0x007f043f
+
+
+#define HWINT_ENABLED			\
+	(INT_TX_COMPLETE_EN|		\
+	 INT_RX_COMPLETE_EN|		\
+	 INT_RETRY_FAIL_EN|		\
+	 INT_WAKEUP_EN|			\
+	 INT_CFG_NEXT_BCN_EN)
+
+#define HWINT_DISABLED			0
+
+#define E2P_PWR_INT_GUARD		8
+#define E2P_CHANNEL_COUNT		14
+
+/* If you compare this addresses with the ZYDAS orignal driver, please notify
+ * that we use word mapping for the EEPROM.
+ */
+
+/*
+ * Upper 16 bit contains the regulatory domain.
+ */
+#define E2P_SUBID		E2P_DATA(0x00)
+#define E2P_POD			E2P_DATA(0x02)
+#define E2P_MAC_ADDR_P1		E2P_DATA(0x04)
+#define E2P_MAC_ADDR_P2		E2P_DATA(0x06)
+#define E2P_PWR_CAL_VALUE1	E2P_DATA(0x08)
+#define E2P_PWR_CAL_VALUE2	E2P_DATA(0x0a)
+#define E2P_PWR_CAL_VALUE3	E2P_DATA(0x0c)
+#define E2P_PWR_CAL_VALUE4      E2P_DATA(0x0e)
+#define E2P_PWR_INT_VALUE1	E2P_DATA(0x10)
+#define E2P_PWR_INT_VALUE2	E2P_DATA(0x12)
+#define E2P_PWR_INT_VALUE3	E2P_DATA(0x14)
+#define E2P_PWR_INT_VALUE4	E2P_DATA(0x16)
+
+/* Contains a bit for each allowed channel. It gives for Europe (ETSI 0x30)
+ * also only 11 channels. */
+#define E2P_ALLOWED_CHANNEL	E2P_DATA(0x18)
+
+#define E2P_DEVICE_VER		E2P_DATA(0x20)
+#define E2P_PHY_REG		E2P_DATA(0x25)
+#define E2P_36M_CAL_VALUE1	E2P_DATA(0x28)
+#define E2P_36M_CAL_VALUE2      E2P_DATA(0x2a)
+#define E2P_36M_CAL_VALUE3      E2P_DATA(0x2c)
+#define E2P_36M_CAL_VALUE4	E2P_DATA(0x2e)
+#define E2P_11A_INT_VALUE1	E2P_DATA(0x30)
+#define E2P_11A_INT_VALUE2	E2P_DATA(0x32)
+#define E2P_11A_INT_VALUE3	E2P_DATA(0x34)
+#define E2P_11A_INT_VALUE4	E2P_DATA(0x36)
+#define E2P_48M_CAL_VALUE1	E2P_DATA(0x38)
+#define E2P_48M_CAL_VALUE2	E2P_DATA(0x3a)
+#define E2P_48M_CAL_VALUE3	E2P_DATA(0x3c)
+#define E2P_48M_CAL_VALUE4	E2P_DATA(0x3e)
+#define E2P_48M_INT_VALUE1	E2P_DATA(0x40)
+#define E2P_48M_INT_VALUE2	E2P_DATA(0x42)
+#define E2P_48M_INT_VALUE3	E2P_DATA(0x44)
+#define E2P_48M_INT_VALUE4	E2P_DATA(0x46)
+#define E2P_54M_CAL_VALUE1	E2P_DATA(0x48)	/* ??? */
+#define E2P_54M_CAL_VALUE2	E2P_DATA(0x4a)
+#define E2P_54M_CAL_VALUE3	E2P_DATA(0x4c)
+#define E2P_54M_CAL_VALUE4	E2P_DATA(0x4e)
+#define E2P_54M_INT_VALUE1	E2P_DATA(0x50)
+#define E2P_54M_INT_VALUE2	E2P_DATA(0x52)
+#define E2P_54M_INT_VALUE3	E2P_DATA(0x54)
+#define E2P_54M_INT_VALUE4	E2P_DATA(0x56)
+
+/* This word contains the base address of the FW_REG_ registers below */
+#define FWRAW_REGS_ADDR		FWRAW_DATA(0x1d)
+
+/* All 16 bit values, offset from the address in FWRAW_REGS_ADDR */
+enum {
+	FW_REG_FIRMWARE_VER	= 0,
+	/* non-zero if USB high speed connection */
+	FW_REG_USB_SPEED	= 1,
+	FW_REG_FIX_TX_RATE	= 2,
+	/* Seems to be able to control LEDs over the firmware */
+	FW_REG_LED_LINK_STATUS	= 3,
+	FW_REG_SOFT_RESET	= 4,
+	FW_REG_FLASH_CHK	= 5,
+};
+
+/* Values for FW_LINK_STATUS */
+#define FW_LINK_OFF		0x0
+#define FW_LINK_TX		0x1
+/* 0x2 - link led on? */
+
+enum {
+	/* indices for ofdm_cal_values */
+	OFDM_36M_INDEX = 0,
+	OFDM_48M_INDEX = 1,
+	OFDM_54M_INDEX = 2,
+};
+
+struct zd_chip {
+	struct zd_usb usb;
+	struct zd_rf rf;
+	struct mutex mutex;
+	/* Base address of FW_REG_ registers */
+	zd_addr_t fw_regs_base;
+	/* EepSetPoint in the vendor driver */
+	u8 pwr_cal_values[E2P_CHANNEL_COUNT];
+	/* integration values in the vendor driver */
+	u8 pwr_int_values[E2P_CHANNEL_COUNT];
+	/* SetPointOFDM in the vendor driver */
+	u8 ofdm_cal_values[3][E2P_CHANNEL_COUNT];
+	u16 link_led;
+	unsigned int pa_type:4,
+		patch_cck_gain:1, patch_cr157:1, patch_6m_band_edge:1,
+		new_phy_layout:1, al2230s_bit:1,
+		supports_tx_led:1;
+};
+
+static inline struct zd_chip *zd_usb_to_chip(struct zd_usb *usb)
+{
+	return container_of(usb, struct zd_chip, usb);
+}
+
+static inline struct zd_chip *zd_rf_to_chip(struct zd_rf *rf)
+{
+	return container_of(rf, struct zd_chip, rf);
+}
+
+#define zd_chip_dev(chip) (&(chip)->usb.intf->dev)
+
+void zd_chip_init(struct zd_chip *chip,
+	         struct ieee80211_hw *hw,
+	         struct usb_interface *intf);
+void zd_chip_clear(struct zd_chip *chip);
+int zd_chip_read_mac_addr_fw(struct zd_chip *chip, u8 *addr);
+int zd_chip_init_hw(struct zd_chip *chip);
+int zd_chip_reset(struct zd_chip *chip);
+
+static inline int zd_chip_is_zd1211b(struct zd_chip *chip)
+{
+	return chip->usb.is_zd1211b;
+}
+
+static inline int zd_ioread16v_locked(struct zd_chip *chip, u16 *values,
+	                              const zd_addr_t *addresses,
+				      unsigned int count)
+{
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	return zd_usb_ioread16v(&chip->usb, values, addresses, count);
+}
+
+static inline int zd_ioread16_locked(struct zd_chip *chip, u16 *value,
+	                             const zd_addr_t addr)
+{
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	return zd_usb_ioread16(&chip->usb, value, addr);
+}
+
+int zd_ioread32v_locked(struct zd_chip *chip, u32 *values,
+	                const zd_addr_t *addresses, unsigned int count);
+
+static inline int zd_ioread32_locked(struct zd_chip *chip, u32 *value,
+	                             const zd_addr_t addr)
+{
+	return zd_ioread32v_locked(chip, value, &addr, 1);
+}
+
+static inline int zd_iowrite16_locked(struct zd_chip *chip, u16 value,
+	                              zd_addr_t addr)
+{
+	struct zd_ioreq16 ioreq;
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	ioreq.addr = addr;
+	ioreq.value = value;
+
+	return zd_usb_iowrite16v(&chip->usb, &ioreq, 1);
+}
+
+int zd_iowrite16a_locked(struct zd_chip *chip,
+                         const struct zd_ioreq16 *ioreqs, unsigned int count);
+
+int _zd_iowrite32v_locked(struct zd_chip *chip, const struct zd_ioreq32 *ioreqs,
+			  unsigned int count);
+
+static inline int zd_iowrite32_locked(struct zd_chip *chip, u32 value,
+	                              zd_addr_t addr)
+{
+	struct zd_ioreq32 ioreq;
+
+	ioreq.addr = addr;
+	ioreq.value = value;
+
+	return _zd_iowrite32v_locked(chip, &ioreq, 1);
+}
+
+int zd_iowrite32a_locked(struct zd_chip *chip,
+	                 const struct zd_ioreq32 *ioreqs, unsigned int count);
+
+static inline int zd_rfwrite_locked(struct zd_chip *chip, u32 value, u8 bits)
+{
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	return zd_usb_rfwrite(&chip->usb, value, bits);
+}
+
+int zd_rfwrite_cr_locked(struct zd_chip *chip, u32 value);
+
+int zd_rfwritev_locked(struct zd_chip *chip,
+	               const u32* values, unsigned int count, u8 bits);
+int zd_rfwritev_cr_locked(struct zd_chip *chip,
+	                  const u32* values, unsigned int count);
+
+/* Locking functions for reading and writing registers.
+ * The different parameters are intentional.
+ */
+int zd_ioread16(struct zd_chip *chip, zd_addr_t addr, u16 *value);
+int zd_iowrite16(struct zd_chip *chip, zd_addr_t addr, u16 value);
+int zd_ioread32(struct zd_chip *chip, zd_addr_t addr, u32 *value);
+int zd_iowrite32(struct zd_chip *chip, zd_addr_t addr, u32 value);
+int zd_ioread32v(struct zd_chip *chip, const zd_addr_t *addresses,
+	          u32 *values, unsigned int count);
+int zd_iowrite32a(struct zd_chip *chip, const struct zd_ioreq32 *ioreqs,
+	           unsigned int count);
+
+int zd_chip_set_channel(struct zd_chip *chip, u8 channel);
+static inline u8 _zd_chip_get_channel(struct zd_chip *chip)
+{
+	return chip->rf.channel;
+}
+u8  zd_chip_get_channel(struct zd_chip *chip);
+int zd_read_regdomain(struct zd_chip *chip, u8 *regdomain);
+int zd_write_mac_addr(struct zd_chip *chip, const u8 *mac_addr);
+int zd_write_bssid(struct zd_chip *chip, const u8 *bssid);
+int zd_chip_switch_radio_on(struct zd_chip *chip);
+int zd_chip_switch_radio_off(struct zd_chip *chip);
+int zd_chip_enable_int(struct zd_chip *chip);
+void zd_chip_disable_int(struct zd_chip *chip);
+int zd_chip_enable_rxtx(struct zd_chip *chip);
+void zd_chip_disable_rxtx(struct zd_chip *chip);
+int zd_chip_enable_hwint(struct zd_chip *chip);
+int zd_chip_disable_hwint(struct zd_chip *chip);
+int zd_chip_generic_patch_6m_band(struct zd_chip *chip, int channel);
+int zd_chip_set_rts_cts_rate_locked(struct zd_chip *chip, int preamble);
+
+static inline int zd_get_encryption_type(struct zd_chip *chip, u32 *type)
+{
+	return zd_ioread32(chip, CR_ENCRYPTION_TYPE, type);
+}
+
+static inline int zd_set_encryption_type(struct zd_chip *chip, u32 type)
+{
+	return zd_iowrite32(chip, CR_ENCRYPTION_TYPE, type);
+}
+
+static inline int zd_chip_get_basic_rates(struct zd_chip *chip, u16 *cr_rates)
+{
+	return zd_ioread16(chip, CR_BASIC_RATE_TBL, cr_rates);
+}
+
+int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates);
+
+int zd_chip_lock_phy_regs(struct zd_chip *chip);
+int zd_chip_unlock_phy_regs(struct zd_chip *chip);
+
+enum led_status {
+	ZD_LED_OFF = 0,
+	ZD_LED_SCANNING = 1,
+	ZD_LED_ASSOCIATED = 2,
+};
+
+int zd_chip_control_leds(struct zd_chip *chip, enum led_status status);
+
+int zd_set_beacon_interval(struct zd_chip *chip, u16 interval, u8 dtim_period,
+			   int type);
+
+static inline int zd_get_beacon_interval(struct zd_chip *chip, u32 *interval)
+{
+	return zd_ioread32(chip, CR_BCN_INTERVAL, interval);
+}
+
+struct rx_status;
+
+u8 zd_rx_rate(const void *rx_frame, const struct rx_status *status);
+
+struct zd_mc_hash {
+	u32 low;
+	u32 high;
+};
+
+static inline void zd_mc_clear(struct zd_mc_hash *hash)
+{
+	hash->low = 0;
+	/* The interfaces must always received broadcasts.
+	 * The hash of the broadcast address ff:ff:ff:ff:ff:ff is 63.
+	 */
+	hash->high = 0x80000000;
+}
+
+static inline void zd_mc_add_all(struct zd_mc_hash *hash)
+{
+	hash->low = hash->high = 0xffffffff;
+}
+
+static inline void zd_mc_add_addr(struct zd_mc_hash *hash, u8 *addr)
+{
+	unsigned int i = addr[5] >> 2;
+	if (i < 32) {
+		hash->low |= 1 << i;
+	} else {
+		hash->high |= 1 << (i-32);
+	}
+}
+
+int zd_chip_set_multicast_hash(struct zd_chip *chip,
+	                       struct zd_mc_hash *hash);
+
+u64 zd_chip_get_tsf(struct zd_chip *chip);
+
+#endif /* _ZD_CHIP_H */
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_def.h b/drivers/net/wireless/zydas/zd1211rw/zd_def.h
new file mode 100644
index 000000000..8ca2d0aab
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_def.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#ifndef _ZD_DEF_H
+#define _ZD_DEF_H
+
+#include <linux/kernel.h>
+#include <linux/stringify.h>
+#include <linux/device.h>
+
+typedef u16 __nocast zd_addr_t;
+
+#define dev_printk_f(level, dev, fmt, args...) \
+	dev_printk(level, dev, "%s() " fmt, __func__, ##args)
+
+#ifdef DEBUG
+#  define dev_dbg_f(dev, fmt, args...) \
+	  dev_printk_f(KERN_DEBUG, dev, fmt, ## args)
+#  define dev_dbg_f_limit(dev, fmt, args...) do { \
+	if (net_ratelimit()) \
+		dev_printk_f(KERN_DEBUG, dev, fmt, ## args); \
+} while (0)
+#  define dev_dbg_f_cond(dev, cond, fmt, args...) ({ \
+	bool __cond = !!(cond); \
+	if (unlikely(__cond)) \
+		dev_printk_f(KERN_DEBUG, dev, fmt, ## args); \
+})
+#else
+#  define dev_dbg_f(dev, fmt, args...) do { (void)(dev); } while (0)
+#  define dev_dbg_f_limit(dev, fmt, args...) do { (void)(dev); } while (0)
+#  define dev_dbg_f_cond(dev, cond, fmt, args...) do { (void)(dev); } while (0)
+#endif /* DEBUG */
+
+#ifdef DEBUG
+#  define ZD_ASSERT(x) \
+do { \
+	if (unlikely(!(x))) { \
+		pr_debug("%s:%d ASSERT %s VIOLATED!\n", \
+			__FILE__, __LINE__, __stringify(x)); \
+		dump_stack(); \
+	} \
+} while (0)
+#else
+#  define ZD_ASSERT(x) do { } while (0)
+#endif
+
+#ifdef DEBUG
+#  define ZD_MEMCLEAR(pointer, size) memset((pointer), 0xff, (size))
+#else
+#  define ZD_MEMCLEAR(pointer, size) do { } while (0)
+#endif
+
+#endif /* _ZD_DEF_H */
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_mac.c b/drivers/net/wireless/zydas/zd1211rw/zd_mac.c
new file mode 100644
index 000000000..80b905d49
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_mac.c
@@ -0,0 +1,1538 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ * Copyright (C) 2006-2007 Michael Wu <flamingice@sourmilk.net>
+ * Copyright (C) 2007-2008 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/jiffies.h>
+#include <net/ieee80211_radiotap.h>
+
+#include "zd_def.h"
+#include "zd_chip.h"
+#include "zd_mac.h"
+#include "zd_rf.h"
+
+struct zd_reg_alpha2_map {
+	u32 reg;
+	char alpha2[2];
+};
+
+static struct zd_reg_alpha2_map reg_alpha2_map[] = {
+	{ ZD_REGDOMAIN_FCC, "US" },
+	{ ZD_REGDOMAIN_IC, "CA" },
+	{ ZD_REGDOMAIN_ETSI, "DE" }, /* Generic ETSI, use most restrictive */
+	{ ZD_REGDOMAIN_JAPAN, "JP" },
+	{ ZD_REGDOMAIN_JAPAN_2, "JP" },
+	{ ZD_REGDOMAIN_JAPAN_3, "JP" },
+	{ ZD_REGDOMAIN_SPAIN, "ES" },
+	{ ZD_REGDOMAIN_FRANCE, "FR" },
+};
+
+/* This table contains the hardware specific values for the modulation rates. */
+static const struct ieee80211_rate zd_rates[] = {
+	{ .bitrate = 10,
+	  .hw_value = ZD_CCK_RATE_1M, },
+	{ .bitrate = 20,
+	  .hw_value = ZD_CCK_RATE_2M,
+	  .hw_value_short = ZD_CCK_RATE_2M | ZD_CCK_PREA_SHORT,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 55,
+	  .hw_value = ZD_CCK_RATE_5_5M,
+	  .hw_value_short = ZD_CCK_RATE_5_5M | ZD_CCK_PREA_SHORT,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 110,
+	  .hw_value = ZD_CCK_RATE_11M,
+	  .hw_value_short = ZD_CCK_RATE_11M | ZD_CCK_PREA_SHORT,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 60,
+	  .hw_value = ZD_OFDM_RATE_6M,
+	  .flags = 0 },
+	{ .bitrate = 90,
+	  .hw_value = ZD_OFDM_RATE_9M,
+	  .flags = 0 },
+	{ .bitrate = 120,
+	  .hw_value = ZD_OFDM_RATE_12M,
+	  .flags = 0 },
+	{ .bitrate = 180,
+	  .hw_value = ZD_OFDM_RATE_18M,
+	  .flags = 0 },
+	{ .bitrate = 240,
+	  .hw_value = ZD_OFDM_RATE_24M,
+	  .flags = 0 },
+	{ .bitrate = 360,
+	  .hw_value = ZD_OFDM_RATE_36M,
+	  .flags = 0 },
+	{ .bitrate = 480,
+	  .hw_value = ZD_OFDM_RATE_48M,
+	  .flags = 0 },
+	{ .bitrate = 540,
+	  .hw_value = ZD_OFDM_RATE_54M,
+	  .flags = 0 },
+};
+
+/*
+ * Zydas retry rates table. Each line is listed in the same order as
+ * in zd_rates[] and contains all the rate used when a packet is sent
+ * starting with a given rates. Let's consider an example :
+ *
+ * "11 Mbits : 4, 3, 2, 1, 0" means :
+ * - packet is sent using 4 different rates
+ * - 1st rate is index 3 (ie 11 Mbits)
+ * - 2nd rate is index 2 (ie 5.5 Mbits)
+ * - 3rd rate is index 1 (ie 2 Mbits)
+ * - 4th rate is index 0 (ie 1 Mbits)
+ */
+
+static const struct tx_retry_rate zd_retry_rates[] = {
+	{ /*  1 Mbits */	1, { 0 }},
+	{ /*  2 Mbits */	2, { 1,  0 }},
+	{ /*  5.5 Mbits */	3, { 2,  1, 0 }},
+	{ /* 11 Mbits */	4, { 3,  2, 1, 0 }},
+	{ /*  6 Mbits */	5, { 4,  3, 2, 1, 0 }},
+	{ /*  9 Mbits */	6, { 5,  4, 3, 2, 1, 0}},
+	{ /* 12 Mbits */	5, { 6,  3, 2, 1, 0 }},
+	{ /* 18 Mbits */	6, { 7,  6, 3, 2, 1, 0 }},
+	{ /* 24 Mbits */	6, { 8,  6, 3, 2, 1, 0 }},
+	{ /* 36 Mbits */	7, { 9,  8, 6, 3, 2, 1, 0 }},
+	{ /* 48 Mbits */	8, {10,  9, 8, 6, 3, 2, 1, 0 }},
+	{ /* 54 Mbits */	9, {11, 10, 9, 8, 6, 3, 2, 1, 0 }}
+};
+
+static const struct ieee80211_channel zd_channels[] = {
+	{ .center_freq = 2412, .hw_value = 1 },
+	{ .center_freq = 2417, .hw_value = 2 },
+	{ .center_freq = 2422, .hw_value = 3 },
+	{ .center_freq = 2427, .hw_value = 4 },
+	{ .center_freq = 2432, .hw_value = 5 },
+	{ .center_freq = 2437, .hw_value = 6 },
+	{ .center_freq = 2442, .hw_value = 7 },
+	{ .center_freq = 2447, .hw_value = 8 },
+	{ .center_freq = 2452, .hw_value = 9 },
+	{ .center_freq = 2457, .hw_value = 10 },
+	{ .center_freq = 2462, .hw_value = 11 },
+	{ .center_freq = 2467, .hw_value = 12 },
+	{ .center_freq = 2472, .hw_value = 13 },
+	{ .center_freq = 2484, .hw_value = 14 },
+};
+
+static void housekeeping_init(struct zd_mac *mac);
+static void housekeeping_enable(struct zd_mac *mac);
+static void housekeeping_disable(struct zd_mac *mac);
+static void beacon_init(struct zd_mac *mac);
+static void beacon_enable(struct zd_mac *mac);
+static void beacon_disable(struct zd_mac *mac);
+static void set_rts_cts(struct zd_mac *mac, unsigned int short_preamble);
+static int zd_mac_config_beacon(struct ieee80211_hw *hw,
+				struct sk_buff *beacon, bool in_intr);
+
+static int zd_reg2alpha2(u8 regdomain, char *alpha2)
+{
+	unsigned int i;
+	struct zd_reg_alpha2_map *reg_map;
+	for (i = 0; i < ARRAY_SIZE(reg_alpha2_map); i++) {
+		reg_map = &reg_alpha2_map[i];
+		if (regdomain == reg_map->reg) {
+			alpha2[0] = reg_map->alpha2[0];
+			alpha2[1] = reg_map->alpha2[1];
+			return 0;
+		}
+	}
+	return 1;
+}
+
+static int zd_check_signal(struct ieee80211_hw *hw, int signal)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+
+	dev_dbg_f_cond(zd_mac_dev(mac), signal < 0 || signal > 100,
+			"%s: signal value from device not in range 0..100, "
+			"but %d.\n", __func__, signal);
+
+	if (signal < 0)
+		signal = 0;
+	else if (signal > 100)
+		signal = 100;
+
+	return signal;
+}
+
+int zd_mac_preinit_hw(struct ieee80211_hw *hw)
+{
+	int r;
+	u8 addr[ETH_ALEN];
+	struct zd_mac *mac = zd_hw_mac(hw);
+
+	r = zd_chip_read_mac_addr_fw(&mac->chip, addr);
+	if (r)
+		return r;
+
+	SET_IEEE80211_PERM_ADDR(hw, addr);
+
+	return 0;
+}
+
+int zd_mac_init_hw(struct ieee80211_hw *hw)
+{
+	int r;
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct zd_chip *chip = &mac->chip;
+	char alpha2[2];
+	u8 default_regdomain;
+
+	r = zd_chip_enable_int(chip);
+	if (r)
+		goto out;
+	r = zd_chip_init_hw(chip);
+	if (r)
+		goto disable_int;
+
+	ZD_ASSERT(!irqs_disabled());
+
+	r = zd_read_regdomain(chip, &default_regdomain);
+	if (r)
+		goto disable_int;
+	spin_lock_irq(&mac->lock);
+	mac->regdomain = mac->default_regdomain = default_regdomain;
+	spin_unlock_irq(&mac->lock);
+
+	/* We must inform the device that we are doing encryption/decryption in
+	 * software at the moment. */
+	r = zd_set_encryption_type(chip, ENC_SNIFFER);
+	if (r)
+		goto disable_int;
+
+	r = zd_reg2alpha2(mac->regdomain, alpha2);
+	if (r)
+		goto disable_int;
+
+	r = regulatory_hint(hw->wiphy, alpha2);
+disable_int:
+	zd_chip_disable_int(chip);
+out:
+	return r;
+}
+
+void zd_mac_clear(struct zd_mac *mac)
+{
+	flush_workqueue(zd_workqueue);
+	zd_chip_clear(&mac->chip);
+	ZD_MEMCLEAR(mac, sizeof(struct zd_mac));
+}
+
+static int set_rx_filter(struct zd_mac *mac)
+{
+	unsigned long flags;
+	u32 filter = STA_RX_FILTER;
+
+	spin_lock_irqsave(&mac->lock, flags);
+	if (mac->pass_ctrl)
+		filter |= RX_FILTER_CTRL;
+	spin_unlock_irqrestore(&mac->lock, flags);
+
+	return zd_iowrite32(&mac->chip, CR_RX_FILTER, filter);
+}
+
+static int set_mac_and_bssid(struct zd_mac *mac)
+{
+	int r;
+
+	if (!mac->vif)
+		return -1;
+
+	r = zd_write_mac_addr(&mac->chip, mac->vif->addr);
+	if (r)
+		return r;
+
+	/* Vendor driver after setting MAC either sets BSSID for AP or
+	 * filter for other modes.
+	 */
+	if (mac->type != NL80211_IFTYPE_AP)
+		return set_rx_filter(mac);
+	else
+		return zd_write_bssid(&mac->chip, mac->vif->addr);
+}
+
+static int set_mc_hash(struct zd_mac *mac)
+{
+	struct zd_mc_hash hash;
+	zd_mc_clear(&hash);
+	return zd_chip_set_multicast_hash(&mac->chip, &hash);
+}
+
+int zd_op_start(struct ieee80211_hw *hw)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct zd_chip *chip = &mac->chip;
+	struct zd_usb *usb = &chip->usb;
+	int r;
+
+	if (!usb->initialized) {
+		r = zd_usb_init_hw(usb);
+		if (r)
+			goto out;
+	}
+
+	r = zd_chip_enable_int(chip);
+	if (r < 0)
+		goto out;
+
+	r = zd_chip_set_basic_rates(chip, CR_RATES_80211B | CR_RATES_80211G);
+	if (r < 0)
+		goto disable_int;
+	r = set_rx_filter(mac);
+	if (r)
+		goto disable_int;
+	r = set_mc_hash(mac);
+	if (r)
+		goto disable_int;
+
+	/* Wait after setting the multicast hash table and powering on
+	 * the radio otherwise interface bring up will fail. This matches
+	 * what the vendor driver did.
+	 */
+	msleep(10);
+
+	r = zd_chip_switch_radio_on(chip);
+	if (r < 0) {
+		dev_err(zd_chip_dev(chip),
+			"%s: failed to set radio on\n", __func__);
+		goto disable_int;
+	}
+	r = zd_chip_enable_rxtx(chip);
+	if (r < 0)
+		goto disable_radio;
+	r = zd_chip_enable_hwint(chip);
+	if (r < 0)
+		goto disable_rxtx;
+
+	housekeeping_enable(mac);
+	beacon_enable(mac);
+	set_bit(ZD_DEVICE_RUNNING, &mac->flags);
+	return 0;
+disable_rxtx:
+	zd_chip_disable_rxtx(chip);
+disable_radio:
+	zd_chip_switch_radio_off(chip);
+disable_int:
+	zd_chip_disable_int(chip);
+out:
+	return r;
+}
+
+void zd_op_stop(struct ieee80211_hw *hw)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct zd_chip *chip = &mac->chip;
+	struct sk_buff *skb;
+	struct sk_buff_head *ack_wait_queue = &mac->ack_wait_queue;
+
+	clear_bit(ZD_DEVICE_RUNNING, &mac->flags);
+
+	/* The order here deliberately is a little different from the open()
+	 * method, since we need to make sure there is no opportunity for RX
+	 * frames to be processed by mac80211 after we have stopped it.
+	 */
+
+	zd_chip_disable_rxtx(chip);
+	beacon_disable(mac);
+	housekeeping_disable(mac);
+	flush_workqueue(zd_workqueue);
+
+	zd_chip_disable_hwint(chip);
+	zd_chip_switch_radio_off(chip);
+	zd_chip_disable_int(chip);
+
+
+	while ((skb = skb_dequeue(ack_wait_queue)))
+		dev_kfree_skb_any(skb);
+}
+
+int zd_restore_settings(struct zd_mac *mac)
+{
+	struct sk_buff *beacon;
+	struct zd_mc_hash multicast_hash;
+	unsigned int short_preamble;
+	int r, beacon_interval, beacon_period;
+	u8 channel;
+
+	dev_dbg_f(zd_mac_dev(mac), "\n");
+
+	spin_lock_irq(&mac->lock);
+	multicast_hash = mac->multicast_hash;
+	short_preamble = mac->short_preamble;
+	beacon_interval = mac->beacon.interval;
+	beacon_period = mac->beacon.period;
+	channel = mac->channel;
+	spin_unlock_irq(&mac->lock);
+
+	r = set_mac_and_bssid(mac);
+	if (r < 0) {
+		dev_dbg_f(zd_mac_dev(mac), "set_mac_and_bssid failed, %d\n", r);
+		return r;
+	}
+
+	r = zd_chip_set_channel(&mac->chip, channel);
+	if (r < 0) {
+		dev_dbg_f(zd_mac_dev(mac), "zd_chip_set_channel failed, %d\n",
+			  r);
+		return r;
+	}
+
+	set_rts_cts(mac, short_preamble);
+
+	r = zd_chip_set_multicast_hash(&mac->chip, &multicast_hash);
+	if (r < 0) {
+		dev_dbg_f(zd_mac_dev(mac),
+			  "zd_chip_set_multicast_hash failed, %d\n", r);
+		return r;
+	}
+
+	if (mac->type == NL80211_IFTYPE_MESH_POINT ||
+	    mac->type == NL80211_IFTYPE_ADHOC ||
+	    mac->type == NL80211_IFTYPE_AP) {
+		if (mac->vif != NULL) {
+			beacon = ieee80211_beacon_get(mac->hw, mac->vif, 0);
+			if (beacon)
+				zd_mac_config_beacon(mac->hw, beacon, false);
+		}
+
+		zd_set_beacon_interval(&mac->chip, beacon_interval,
+					beacon_period, mac->type);
+
+		spin_lock_irq(&mac->lock);
+		mac->beacon.last_update = jiffies;
+		spin_unlock_irq(&mac->lock);
+	}
+
+	return 0;
+}
+
+/**
+ * zd_mac_tx_status - reports tx status of a packet if required
+ * @hw: a &struct ieee80211_hw pointer
+ * @skb: a sk-buffer
+ * @ackssi: ACK signal strength
+ * @tx_status: success and/or retry
+ *
+ * This information calls ieee80211_tx_status_irqsafe() if required by the
+ * control information. It copies the control information into the status
+ * information.
+ *
+ * If no status information has been requested, the skb is freed.
+ */
+static void zd_mac_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
+		      int ackssi, struct tx_status *tx_status)
+{
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	int i;
+	int success = 1, retry = 1;
+	int first_idx;
+	const struct tx_retry_rate *retries;
+
+	ieee80211_tx_info_clear_status(info);
+
+	if (tx_status) {
+		success = !tx_status->failure;
+		retry = tx_status->retry + success;
+	}
+
+	if (success) {
+		/* success */
+		info->flags |= IEEE80211_TX_STAT_ACK;
+	} else {
+		/* failure */
+		info->flags &= ~IEEE80211_TX_STAT_ACK;
+	}
+
+	first_idx = info->status.rates[0].idx;
+	ZD_ASSERT(0<=first_idx && first_idx<ARRAY_SIZE(zd_retry_rates));
+	retries = &zd_retry_rates[first_idx];
+	ZD_ASSERT(1 <= retry && retry <= retries->count);
+
+	info->status.rates[0].idx = retries->rate[0];
+	info->status.rates[0].count = 1; // (retry > 1 ? 2 : 1);
+
+	for (i=1; i<IEEE80211_TX_MAX_RATES-1 && i<retry; i++) {
+		info->status.rates[i].idx = retries->rate[i];
+		info->status.rates[i].count = 1; // ((i==retry-1) && success ? 1:2);
+	}
+	for (; i<IEEE80211_TX_MAX_RATES && i<retry; i++) {
+		info->status.rates[i].idx = retries->rate[retry - 1];
+		info->status.rates[i].count = 1; // (success ? 1:2);
+	}
+	if (i<IEEE80211_TX_MAX_RATES)
+		info->status.rates[i].idx = -1; /* terminate */
+
+	info->status.ack_signal = zd_check_signal(hw, ackssi);
+	ieee80211_tx_status_irqsafe(hw, skb);
+}
+
+/**
+ * zd_mac_tx_failed - callback for failed frames
+ * @urb: pointer to the urb structure
+ *
+ * This function is called if a frame couldn't be successfully
+ * transferred. The first frame from the tx queue, will be selected and
+ * reported as error to the upper layers.
+ */
+void zd_mac_tx_failed(struct urb *urb)
+{
+	struct ieee80211_hw * hw = zd_usb_to_hw(urb->context);
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct sk_buff_head *q = &mac->ack_wait_queue;
+	struct sk_buff *skb;
+	struct tx_status *tx_status = (struct tx_status *)urb->transfer_buffer;
+	unsigned long flags;
+	int success = !tx_status->failure;
+	int retry = tx_status->retry + success;
+	int found = 0;
+	int i, position = 0;
+
+	spin_lock_irqsave(&q->lock, flags);
+
+	skb_queue_walk(q, skb) {
+		struct ieee80211_hdr *tx_hdr;
+		struct ieee80211_tx_info *info;
+		int first_idx, final_idx;
+		const struct tx_retry_rate *retries;
+		u8 final_rate;
+
+		position ++;
+
+		/* if the hardware reports a failure and we had a 802.11 ACK
+		 * pending, then we skip the first skb when searching for a
+		 * matching frame */
+		if (tx_status->failure && mac->ack_pending &&
+		    skb_queue_is_first(q, skb)) {
+			continue;
+		}
+
+		tx_hdr = (struct ieee80211_hdr *)skb->data;
+
+		/* we skip all frames not matching the reported destination */
+		if (unlikely(!ether_addr_equal(tx_hdr->addr1, tx_status->mac)))
+			continue;
+
+		/* we skip all frames not matching the reported final rate */
+
+		info = IEEE80211_SKB_CB(skb);
+		first_idx = info->status.rates[0].idx;
+		ZD_ASSERT(0<=first_idx && first_idx<ARRAY_SIZE(zd_retry_rates));
+		retries = &zd_retry_rates[first_idx];
+		if (retry <= 0 || retry > retries->count)
+			continue;
+
+		final_idx = retries->rate[retry - 1];
+		final_rate = zd_rates[final_idx].hw_value;
+
+		if (final_rate != tx_status->rate) {
+			continue;
+		}
+
+		found = 1;
+		break;
+	}
+
+	if (found) {
+		for (i=1; i<=position; i++) {
+			skb = __skb_dequeue(q);
+			zd_mac_tx_status(hw, skb,
+					 mac->ack_pending ? mac->ack_signal : 0,
+					 i == position ? tx_status : NULL);
+			mac->ack_pending = 0;
+		}
+	}
+
+	spin_unlock_irqrestore(&q->lock, flags);
+}
+
+/**
+ * zd_mac_tx_to_dev - callback for USB layer
+ * @skb: a &sk_buff pointer
+ * @error: error value, 0 if transmission successful
+ *
+ * Informs the MAC layer that the frame has successfully transferred to the
+ * device. If an ACK is required and the transfer to the device has been
+ * successful, the packets are put on the @ack_wait_queue with
+ * the control set removed.
+ */
+void zd_mac_tx_to_dev(struct sk_buff *skb, int error)
+{
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_hw *hw = info->rate_driver_data[0];
+	struct zd_mac *mac = zd_hw_mac(hw);
+
+	ieee80211_tx_info_clear_status(info);
+
+	skb_pull(skb, sizeof(struct zd_ctrlset));
+	if (unlikely(error ||
+	    (info->flags & IEEE80211_TX_CTL_NO_ACK))) {
+		/*
+		 * FIXME : do we need to fill in anything ?
+		 */
+		ieee80211_tx_status_irqsafe(hw, skb);
+	} else {
+		struct sk_buff_head *q = &mac->ack_wait_queue;
+
+		skb_queue_tail(q, skb);
+		while (skb_queue_len(q) > ZD_MAC_MAX_ACK_WAITERS) {
+			zd_mac_tx_status(hw, skb_dequeue(q),
+					 mac->ack_pending ? mac->ack_signal : 0,
+					 NULL);
+			mac->ack_pending = 0;
+		}
+	}
+}
+
+static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length)
+{
+	/* ZD_PURE_RATE() must be used to remove the modulation type flag of
+	 * the zd-rate values.
+	 */
+	static const u8 rate_divisor[] = {
+		[ZD_PURE_RATE(ZD_CCK_RATE_1M)]   =  1,
+		[ZD_PURE_RATE(ZD_CCK_RATE_2M)]	 =  2,
+		/* Bits must be doubled. */
+		[ZD_PURE_RATE(ZD_CCK_RATE_5_5M)] = 11,
+		[ZD_PURE_RATE(ZD_CCK_RATE_11M)]	 = 11,
+		[ZD_PURE_RATE(ZD_OFDM_RATE_6M)]  =  6,
+		[ZD_PURE_RATE(ZD_OFDM_RATE_9M)]  =  9,
+		[ZD_PURE_RATE(ZD_OFDM_RATE_12M)] = 12,
+		[ZD_PURE_RATE(ZD_OFDM_RATE_18M)] = 18,
+		[ZD_PURE_RATE(ZD_OFDM_RATE_24M)] = 24,
+		[ZD_PURE_RATE(ZD_OFDM_RATE_36M)] = 36,
+		[ZD_PURE_RATE(ZD_OFDM_RATE_48M)] = 48,
+		[ZD_PURE_RATE(ZD_OFDM_RATE_54M)] = 54,
+	};
+
+	u32 bits = (u32)tx_length * 8;
+	u32 divisor;
+
+	divisor = rate_divisor[ZD_PURE_RATE(zd_rate)];
+	if (divisor == 0)
+		return -EINVAL;
+
+	switch (zd_rate) {
+	case ZD_CCK_RATE_5_5M:
+		bits = (2*bits) + 10; /* round up to the next integer */
+		break;
+	case ZD_CCK_RATE_11M:
+		if (service) {
+			u32 t = bits % 11;
+			*service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION;
+			if (0 < t && t <= 3) {
+				*service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION;
+			}
+		}
+		bits += 10; /* round up to the next integer */
+		break;
+	}
+
+	return bits/divisor;
+}
+
+static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs,
+	                   struct ieee80211_hdr *header,
+	                   struct ieee80211_tx_info *info)
+{
+	/*
+	 * CONTROL TODO:
+	 * - if backoff needed, enable bit 0
+	 * - if burst (backoff not needed) disable bit 0
+	 */
+
+	cs->control = 0;
+
+	/* First fragment */
+	if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
+		cs->control |= ZD_CS_NEED_RANDOM_BACKOFF;
+
+	/* No ACK expected (multicast, etc.) */
+	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+		cs->control |= ZD_CS_NO_ACK;
+
+	/* PS-POLL */
+	if (ieee80211_is_pspoll(header->frame_control))
+		cs->control |= ZD_CS_PS_POLL_FRAME;
+
+	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
+		cs->control |= ZD_CS_RTS;
+
+	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
+		cs->control |= ZD_CS_SELF_CTS;
+
+	/* FIXME: Management frame? */
+}
+
+static bool zd_mac_match_cur_beacon(struct zd_mac *mac, struct sk_buff *beacon)
+{
+	if (!mac->beacon.cur_beacon)
+		return false;
+
+	if (mac->beacon.cur_beacon->len != beacon->len)
+		return false;
+
+	return !memcmp(beacon->data, mac->beacon.cur_beacon->data, beacon->len);
+}
+
+static void zd_mac_free_cur_beacon_locked(struct zd_mac *mac)
+{
+	ZD_ASSERT(mutex_is_locked(&mac->chip.mutex));
+
+	kfree_skb(mac->beacon.cur_beacon);
+	mac->beacon.cur_beacon = NULL;
+}
+
+static void zd_mac_free_cur_beacon(struct zd_mac *mac)
+{
+	mutex_lock(&mac->chip.mutex);
+	zd_mac_free_cur_beacon_locked(mac);
+	mutex_unlock(&mac->chip.mutex);
+}
+
+static int zd_mac_config_beacon(struct ieee80211_hw *hw, struct sk_buff *beacon,
+				bool in_intr)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	int r, ret, num_cmds, req_pos = 0;
+	u32 tmp, j = 0;
+	/* 4 more bytes for tail CRC */
+	u32 full_len = beacon->len + 4;
+	unsigned long end_jiffies, message_jiffies;
+	struct zd_ioreq32 *ioreqs;
+
+	mutex_lock(&mac->chip.mutex);
+
+	/* Check if hw already has this beacon. */
+	if (zd_mac_match_cur_beacon(mac, beacon)) {
+		r = 0;
+		goto out_nofree;
+	}
+
+	/* Alloc memory for full beacon write at once. */
+	num_cmds = 1 + zd_chip_is_zd1211b(&mac->chip) + full_len;
+	ioreqs = kmalloc_array(num_cmds, sizeof(struct zd_ioreq32),
+			       GFP_KERNEL);
+	if (!ioreqs) {
+		r = -ENOMEM;
+		goto out_nofree;
+	}
+
+	r = zd_iowrite32_locked(&mac->chip, 0, CR_BCN_FIFO_SEMAPHORE);
+	if (r < 0)
+		goto out;
+	r = zd_ioread32_locked(&mac->chip, &tmp, CR_BCN_FIFO_SEMAPHORE);
+	if (r < 0)
+		goto release_sema;
+	if (in_intr && tmp & 0x2) {
+		r = -EBUSY;
+		goto release_sema;
+	}
+
+	end_jiffies = jiffies + HZ / 2; /*~500ms*/
+	message_jiffies = jiffies + HZ / 10; /*~100ms*/
+	while (tmp & 0x2) {
+		r = zd_ioread32_locked(&mac->chip, &tmp, CR_BCN_FIFO_SEMAPHORE);
+		if (r < 0)
+			goto release_sema;
+		if (time_is_before_eq_jiffies(message_jiffies)) {
+			message_jiffies = jiffies + HZ / 10;
+			dev_err(zd_mac_dev(mac),
+					"CR_BCN_FIFO_SEMAPHORE not ready\n");
+			if (time_is_before_eq_jiffies(end_jiffies))  {
+				dev_err(zd_mac_dev(mac),
+						"Giving up beacon config.\n");
+				r = -ETIMEDOUT;
+				goto reset_device;
+			}
+		}
+		msleep(20);
+	}
+
+	ioreqs[req_pos].addr = CR_BCN_FIFO;
+	ioreqs[req_pos].value = full_len - 1;
+	req_pos++;
+	if (zd_chip_is_zd1211b(&mac->chip)) {
+		ioreqs[req_pos].addr = CR_BCN_LENGTH;
+		ioreqs[req_pos].value = full_len - 1;
+		req_pos++;
+	}
+
+	for (j = 0 ; j < beacon->len; j++) {
+		ioreqs[req_pos].addr = CR_BCN_FIFO;
+		ioreqs[req_pos].value = *((u8 *)(beacon->data + j));
+		req_pos++;
+	}
+
+	for (j = 0; j < 4; j++) {
+		ioreqs[req_pos].addr = CR_BCN_FIFO;
+		ioreqs[req_pos].value = 0x0;
+		req_pos++;
+	}
+
+	BUG_ON(req_pos != num_cmds);
+
+	r = zd_iowrite32a_locked(&mac->chip, ioreqs, num_cmds);
+
+release_sema:
+	/*
+	 * Try very hard to release device beacon semaphore, as otherwise
+	 * device/driver can be left in unusable state.
+	 */
+	end_jiffies = jiffies + HZ / 2; /*~500ms*/
+	ret = zd_iowrite32_locked(&mac->chip, 1, CR_BCN_FIFO_SEMAPHORE);
+	while (ret < 0) {
+		if (in_intr || time_is_before_eq_jiffies(end_jiffies)) {
+			ret = -ETIMEDOUT;
+			break;
+		}
+
+		msleep(20);
+		ret = zd_iowrite32_locked(&mac->chip, 1, CR_BCN_FIFO_SEMAPHORE);
+	}
+
+	if (ret < 0)
+		dev_err(zd_mac_dev(mac), "Could not release "
+					 "CR_BCN_FIFO_SEMAPHORE!\n");
+	if (r < 0 || ret < 0) {
+		if (r >= 0)
+			r = ret;
+
+		/* We don't know if beacon was written successfully or not,
+		 * so clear current. */
+		zd_mac_free_cur_beacon_locked(mac);
+
+		goto out;
+	}
+
+	/* Beacon has now been written successfully, update current. */
+	zd_mac_free_cur_beacon_locked(mac);
+	mac->beacon.cur_beacon = beacon;
+	beacon = NULL;
+
+	/* 802.11b/g 2.4G CCK 1Mb
+	 * 802.11a, not yet implemented, uses different values (see GPL vendor
+	 * driver)
+	 */
+	r = zd_iowrite32_locked(&mac->chip, 0x00000400 | (full_len << 19),
+				CR_BCN_PLCP_CFG);
+out:
+	kfree(ioreqs);
+out_nofree:
+	kfree_skb(beacon);
+	mutex_unlock(&mac->chip.mutex);
+
+	return r;
+
+reset_device:
+	zd_mac_free_cur_beacon_locked(mac);
+	kfree_skb(beacon);
+
+	mutex_unlock(&mac->chip.mutex);
+	kfree(ioreqs);
+
+	/* semaphore stuck, reset device to avoid fw freeze later */
+	dev_warn(zd_mac_dev(mac), "CR_BCN_FIFO_SEMAPHORE stuck, "
+				  "resetting device...");
+	usb_queue_reset_device(mac->chip.usb.intf);
+
+	return r;
+}
+
+static int fill_ctrlset(struct zd_mac *mac,
+			struct sk_buff *skb)
+{
+	int r;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	unsigned int frag_len = skb->len + FCS_LEN;
+	unsigned int packet_length;
+	struct ieee80211_rate *txrate;
+	struct zd_ctrlset *cs = skb_push(skb, sizeof(struct zd_ctrlset));
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+	ZD_ASSERT(frag_len <= 0xffff);
+
+	/*
+	 * Firmware computes the duration itself (for all frames except PSPoll)
+	 * and needs the field set to 0 at input, otherwise firmware messes up
+	 * duration_id and sets bits 14 and 15 on.
+	 */
+	if (!ieee80211_is_pspoll(hdr->frame_control))
+		hdr->duration_id = 0;
+
+	txrate = ieee80211_get_tx_rate(mac->hw, info);
+
+	cs->modulation = txrate->hw_value;
+	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
+		cs->modulation = txrate->hw_value_short;
+
+	cs->tx_length = cpu_to_le16(frag_len);
+
+	cs_set_control(mac, cs, hdr, info);
+
+	packet_length = frag_len + sizeof(struct zd_ctrlset) + 10;
+	ZD_ASSERT(packet_length <= 0xffff);
+	/* ZD1211B: Computing the length difference this way, gives us
+	 * flexibility to compute the packet length.
+	 */
+	cs->packet_length = cpu_to_le16(zd_chip_is_zd1211b(&mac->chip) ?
+			packet_length - frag_len : packet_length);
+
+	/*
+	 * CURRENT LENGTH:
+	 * - transmit frame length in microseconds
+	 * - seems to be derived from frame length
+	 * - see Cal_Us_Service() in zdinlinef.h
+	 * - if macp->bTxBurstEnable is enabled, then multiply by 4
+	 *  - bTxBurstEnable is never set in the vendor driver
+	 *
+	 * SERVICE:
+	 * - "for PLCP configuration"
+	 * - always 0 except in some situations at 802.11b 11M
+	 * - see line 53 of zdinlinef.h
+	 */
+	cs->service = 0;
+	r = zd_calc_tx_length_us(&cs->service, ZD_RATE(cs->modulation),
+		                 le16_to_cpu(cs->tx_length));
+	if (r < 0)
+		return r;
+	cs->current_length = cpu_to_le16(r);
+	cs->next_frame_length = 0;
+
+	return 0;
+}
+
+/**
+ * zd_op_tx - transmits a network frame to the device
+ *
+ * @hw: a &struct ieee80211_hw pointer
+ * @control: the control structure
+ * @skb: socket buffer
+ *
+ * This function transmit an IEEE 802.11 network frame to the device. The
+ * control block of the skbuff will be initialized. If necessary the incoming
+ * mac80211 queues will be stopped.
+ */
+static void zd_op_tx(struct ieee80211_hw *hw,
+		     struct ieee80211_tx_control *control,
+		     struct sk_buff *skb)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	int r;
+
+	r = fill_ctrlset(mac, skb);
+	if (r)
+		goto fail;
+
+	info->rate_driver_data[0] = hw;
+
+	r = zd_usb_tx(&mac->chip.usb, skb);
+	if (r)
+		goto fail;
+	return;
+
+fail:
+	dev_kfree_skb(skb);
+}
+
+/**
+ * filter_ack - filters incoming packets for acknowledgements
+ * @hw: a &struct ieee80211_hw pointer
+ * @rx_hdr: received header
+ * @stats: the status for the received packet
+ *
+ * This functions looks for ACK packets and tries to match them with the
+ * frames in the tx queue. If a match is found the frame will be dequeued and
+ * the upper layers is informed about the successful transmission. If
+ * mac80211 queues have been stopped and the number of frames still to be
+ * transmitted is low the queues will be opened again.
+ *
+ * Returns 1 if the frame was an ACK, 0 if it was ignored.
+ */
+static int filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr,
+		      struct ieee80211_rx_status *stats)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct sk_buff *skb;
+	struct sk_buff_head *q;
+	unsigned long flags;
+	int found = 0;
+	int i, position = 0;
+
+	if (!ieee80211_is_ack(rx_hdr->frame_control))
+		return 0;
+
+	q = &mac->ack_wait_queue;
+	spin_lock_irqsave(&q->lock, flags);
+	skb_queue_walk(q, skb) {
+		struct ieee80211_hdr *tx_hdr;
+
+		position ++;
+
+		if (mac->ack_pending && skb_queue_is_first(q, skb))
+		    continue;
+
+		tx_hdr = (struct ieee80211_hdr *)skb->data;
+		if (likely(ether_addr_equal(tx_hdr->addr2, rx_hdr->addr1)))
+		{
+			found = 1;
+			break;
+		}
+	}
+
+	if (found) {
+		for (i=1; i<position; i++) {
+			skb = __skb_dequeue(q);
+			zd_mac_tx_status(hw, skb,
+					 mac->ack_pending ? mac->ack_signal : 0,
+					 NULL);
+			mac->ack_pending = 0;
+		}
+
+		mac->ack_pending = 1;
+		mac->ack_signal = stats->signal;
+
+		/* Prevent pending tx-packet on AP-mode */
+		if (mac->type == NL80211_IFTYPE_AP) {
+			skb = __skb_dequeue(q);
+			zd_mac_tx_status(hw, skb, mac->ack_signal, NULL);
+			mac->ack_pending = 0;
+		}
+	}
+
+	spin_unlock_irqrestore(&q->lock, flags);
+	return 1;
+}
+
+int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct ieee80211_rx_status stats;
+	const struct rx_status *status;
+	struct sk_buff *skb;
+	int bad_frame = 0;
+	__le16 fc;
+	int need_padding;
+	int i;
+	u8 rate;
+
+	if (length < ZD_PLCP_HEADER_SIZE + 10 /* IEEE80211_1ADDR_LEN */ +
+	             FCS_LEN + sizeof(struct rx_status))
+		return -EINVAL;
+
+	memset(&stats, 0, sizeof(stats));
+
+	/* Note about pass_failed_fcs and pass_ctrl access below:
+	 * mac locking intentionally omitted here, as this is the only unlocked
+	 * reader and the only writer is configure_filter. Plus, if there were
+	 * any races accessing these variables, it wouldn't really matter.
+	 * If mac80211 ever provides a way for us to access filter flags
+	 * from outside configure_filter, we could improve on this. Also, this
+	 * situation may change once we implement some kind of DMA-into-skb
+	 * RX path. */
+
+	/* Caller has to ensure that length >= sizeof(struct rx_status). */
+	status = (struct rx_status *)
+		(buffer + (length - sizeof(struct rx_status)));
+	if (status->frame_status & ZD_RX_ERROR) {
+		if (mac->pass_failed_fcs &&
+				(status->frame_status & ZD_RX_CRC32_ERROR)) {
+			stats.flag |= RX_FLAG_FAILED_FCS_CRC;
+			bad_frame = 1;
+		} else {
+			return -EINVAL;
+		}
+	}
+
+	stats.freq = zd_channels[_zd_chip_get_channel(&mac->chip) - 1].center_freq;
+	stats.band = NL80211_BAND_2GHZ;
+	stats.signal = zd_check_signal(hw, status->signal_strength);
+
+	rate = zd_rx_rate(buffer, status);
+
+	/* todo: return index in the big switches in zd_rx_rate instead */
+	for (i = 0; i < mac->band.n_bitrates; i++)
+		if (rate == mac->band.bitrates[i].hw_value)
+			stats.rate_idx = i;
+
+	length -= ZD_PLCP_HEADER_SIZE + sizeof(struct rx_status);
+	buffer += ZD_PLCP_HEADER_SIZE;
+
+	/* Except for bad frames, filter each frame to see if it is an ACK, in
+	 * which case our internal TX tracking is updated. Normally we then
+	 * bail here as there's no need to pass ACKs on up to the stack, but
+	 * there is also the case where the stack has requested us to pass
+	 * control frames on up (pass_ctrl) which we must consider. */
+	if (!bad_frame &&
+			filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats)
+			&& !mac->pass_ctrl)
+		return 0;
+
+	fc = get_unaligned((__le16*)buffer);
+	need_padding = ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc);
+
+	skb = dev_alloc_skb(length + (need_padding ? 2 : 0));
+	if (skb == NULL)
+		return -ENOMEM;
+	if (need_padding) {
+		/* Make sure the payload data is 4 byte aligned. */
+		skb_reserve(skb, 2);
+	}
+
+	/* FIXME : could we avoid this big memcpy ? */
+	skb_put_data(skb, buffer, length);
+
+	memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
+	ieee80211_rx_irqsafe(hw, skb);
+	return 0;
+}
+
+static int zd_op_add_interface(struct ieee80211_hw *hw,
+				struct ieee80211_vif *vif)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+
+	/* using NL80211_IFTYPE_UNSPECIFIED to indicate no mode selected */
+	if (mac->type != NL80211_IFTYPE_UNSPECIFIED)
+		return -EOPNOTSUPP;
+
+	switch (vif->type) {
+	case NL80211_IFTYPE_MONITOR:
+	case NL80211_IFTYPE_MESH_POINT:
+	case NL80211_IFTYPE_STATION:
+	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_AP:
+		mac->type = vif->type;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	mac->vif = vif;
+
+	return set_mac_and_bssid(mac);
+}
+
+static void zd_op_remove_interface(struct ieee80211_hw *hw,
+				    struct ieee80211_vif *vif)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	mac->type = NL80211_IFTYPE_UNSPECIFIED;
+	mac->vif = NULL;
+	zd_set_beacon_interval(&mac->chip, 0, 0, NL80211_IFTYPE_UNSPECIFIED);
+	zd_write_mac_addr(&mac->chip, NULL);
+
+	zd_mac_free_cur_beacon(mac);
+}
+
+static int zd_op_config(struct ieee80211_hw *hw, u32 changed)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct ieee80211_conf *conf = &hw->conf;
+
+	spin_lock_irq(&mac->lock);
+	mac->channel = conf->chandef.chan->hw_value;
+	spin_unlock_irq(&mac->lock);
+
+	return zd_chip_set_channel(&mac->chip, conf->chandef.chan->hw_value);
+}
+
+static void zd_beacon_done(struct zd_mac *mac)
+{
+	struct sk_buff *skb, *beacon;
+
+	if (!test_bit(ZD_DEVICE_RUNNING, &mac->flags))
+		return;
+	if (!mac->vif || mac->vif->type != NL80211_IFTYPE_AP)
+		return;
+
+	/*
+	 * Send out buffered broad- and multicast frames.
+	 */
+	while (!ieee80211_queue_stopped(mac->hw, 0)) {
+		skb = ieee80211_get_buffered_bc(mac->hw, mac->vif);
+		if (!skb)
+			break;
+		zd_op_tx(mac->hw, NULL, skb);
+	}
+
+	/*
+	 * Fetch next beacon so that tim_count is updated.
+	 */
+	beacon = ieee80211_beacon_get(mac->hw, mac->vif, 0);
+	if (beacon)
+		zd_mac_config_beacon(mac->hw, beacon, true);
+
+	spin_lock_irq(&mac->lock);
+	mac->beacon.last_update = jiffies;
+	spin_unlock_irq(&mac->lock);
+}
+
+static void zd_process_intr(struct work_struct *work)
+{
+	u16 int_status;
+	unsigned long flags;
+	struct zd_mac *mac = container_of(work, struct zd_mac, process_intr);
+
+	spin_lock_irqsave(&mac->lock, flags);
+	int_status = le16_to_cpu(*(__le16 *)(mac->intr_buffer + 4));
+	spin_unlock_irqrestore(&mac->lock, flags);
+
+	if (int_status & INT_CFG_NEXT_BCN) {
+		/*dev_dbg_f_limit(zd_mac_dev(mac), "INT_CFG_NEXT_BCN\n");*/
+		zd_beacon_done(mac);
+	} else {
+		dev_dbg_f(zd_mac_dev(mac), "Unsupported interrupt\n");
+	}
+
+	zd_chip_enable_hwint(&mac->chip);
+}
+
+
+static u64 zd_op_prepare_multicast(struct ieee80211_hw *hw,
+				   struct netdev_hw_addr_list *mc_list)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	struct zd_mc_hash hash;
+	struct netdev_hw_addr *ha;
+
+	zd_mc_clear(&hash);
+
+	netdev_hw_addr_list_for_each(ha, mc_list) {
+		dev_dbg_f(zd_mac_dev(mac), "mc addr %pM\n", ha->addr);
+		zd_mc_add_addr(&hash, ha->addr);
+	}
+
+	return hash.low | ((u64)hash.high << 32);
+}
+
+#define SUPPORTED_FIF_FLAGS \
+	(FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \
+	FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)
+static void zd_op_configure_filter(struct ieee80211_hw *hw,
+			unsigned int changed_flags,
+			unsigned int *new_flags,
+			u64 multicast)
+{
+	struct zd_mc_hash hash = {
+		.low = multicast,
+		.high = multicast >> 32,
+	};
+	struct zd_mac *mac = zd_hw_mac(hw);
+	unsigned long flags;
+	int r;
+
+	/* Only deal with supported flags */
+	changed_flags &= SUPPORTED_FIF_FLAGS;
+	*new_flags &= SUPPORTED_FIF_FLAGS;
+
+	/*
+	 * If multicast parameter (as returned by zd_op_prepare_multicast)
+	 * has changed, no bit in changed_flags is set. To handle this
+	 * situation, we do not return if changed_flags is 0. If we do so,
+	 * we will have some issue with IPv6 which uses multicast for link
+	 * layer address resolution.
+	 */
+	if (*new_flags & FIF_ALLMULTI)
+		zd_mc_add_all(&hash);
+
+	spin_lock_irqsave(&mac->lock, flags);
+	mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL);
+	mac->pass_ctrl = !!(*new_flags & FIF_CONTROL);
+	mac->multicast_hash = hash;
+	spin_unlock_irqrestore(&mac->lock, flags);
+
+	zd_chip_set_multicast_hash(&mac->chip, &hash);
+
+	if (changed_flags & FIF_CONTROL) {
+		r = set_rx_filter(mac);
+		if (r)
+			dev_err(zd_mac_dev(mac), "set_rx_filter error %d\n", r);
+	}
+
+	/* no handling required for FIF_OTHER_BSS as we don't currently
+	 * do BSSID filtering */
+	/* FIXME: in future it would be nice to enable the probe response
+	 * filter (so that the driver doesn't see them) until
+	 * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd
+	 * have to schedule work to enable prbresp reception, which might
+	 * happen too late. For now we'll just listen and forward them all the
+	 * time. */
+}
+
+static void set_rts_cts(struct zd_mac *mac, unsigned int short_preamble)
+{
+	mutex_lock(&mac->chip.mutex);
+	zd_chip_set_rts_cts_rate_locked(&mac->chip, short_preamble);
+	mutex_unlock(&mac->chip.mutex);
+}
+
+static void zd_op_bss_info_changed(struct ieee80211_hw *hw,
+				   struct ieee80211_vif *vif,
+				   struct ieee80211_bss_conf *bss_conf,
+				   u64 changes)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	int associated;
+
+	dev_dbg_f(zd_mac_dev(mac), "changes: %llx\n", changes);
+
+	if (mac->type == NL80211_IFTYPE_MESH_POINT ||
+	    mac->type == NL80211_IFTYPE_ADHOC ||
+	    mac->type == NL80211_IFTYPE_AP) {
+		associated = true;
+		if (changes & BSS_CHANGED_BEACON) {
+			struct sk_buff *beacon = ieee80211_beacon_get(hw, vif,
+								      0);
+
+			if (beacon) {
+				zd_chip_disable_hwint(&mac->chip);
+				zd_mac_config_beacon(hw, beacon, false);
+				zd_chip_enable_hwint(&mac->chip);
+			}
+		}
+
+		if (changes & BSS_CHANGED_BEACON_ENABLED) {
+			u16 interval = 0;
+			u8 period = 0;
+
+			if (bss_conf->enable_beacon) {
+				period = bss_conf->dtim_period;
+				interval = bss_conf->beacon_int;
+			}
+
+			spin_lock_irq(&mac->lock);
+			mac->beacon.period = period;
+			mac->beacon.interval = interval;
+			mac->beacon.last_update = jiffies;
+			spin_unlock_irq(&mac->lock);
+
+			zd_set_beacon_interval(&mac->chip, interval, period,
+					       mac->type);
+		}
+	} else
+		associated = is_valid_ether_addr(bss_conf->bssid);
+
+	spin_lock_irq(&mac->lock);
+	mac->associated = associated;
+	spin_unlock_irq(&mac->lock);
+
+	/* TODO: do hardware bssid filtering */
+
+	if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+		spin_lock_irq(&mac->lock);
+		mac->short_preamble = bss_conf->use_short_preamble;
+		spin_unlock_irq(&mac->lock);
+
+		set_rts_cts(mac, bss_conf->use_short_preamble);
+	}
+}
+
+static u64 zd_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	struct zd_mac *mac = zd_hw_mac(hw);
+	return zd_chip_get_tsf(&mac->chip);
+}
+
+static const struct ieee80211_ops zd_ops = {
+	.tx			= zd_op_tx,
+	.start			= zd_op_start,
+	.stop			= zd_op_stop,
+	.add_interface		= zd_op_add_interface,
+	.remove_interface	= zd_op_remove_interface,
+	.config			= zd_op_config,
+	.prepare_multicast	= zd_op_prepare_multicast,
+	.configure_filter	= zd_op_configure_filter,
+	.bss_info_changed	= zd_op_bss_info_changed,
+	.get_tsf		= zd_op_get_tsf,
+};
+
+struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf)
+{
+	struct zd_mac *mac;
+	struct ieee80211_hw *hw;
+
+	hw = ieee80211_alloc_hw(sizeof(struct zd_mac), &zd_ops);
+	if (!hw) {
+		dev_dbg_f(&intf->dev, "out of memory\n");
+		return NULL;
+	}
+
+	mac = zd_hw_mac(hw);
+
+	memset(mac, 0, sizeof(*mac));
+	spin_lock_init(&mac->lock);
+	mac->hw = hw;
+
+	mac->type = NL80211_IFTYPE_UNSPECIFIED;
+
+	memcpy(mac->channels, zd_channels, sizeof(zd_channels));
+	memcpy(mac->rates, zd_rates, sizeof(zd_rates));
+	mac->band.n_bitrates = ARRAY_SIZE(zd_rates);
+	mac->band.bitrates = mac->rates;
+	mac->band.n_channels = ARRAY_SIZE(zd_channels);
+	mac->band.channels = mac->channels;
+
+	hw->wiphy->bands[NL80211_BAND_2GHZ] = &mac->band;
+
+	ieee80211_hw_set(hw, MFP_CAPABLE);
+	ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
+	ieee80211_hw_set(hw, RX_INCLUDES_FCS);
+	ieee80211_hw_set(hw, SIGNAL_UNSPEC);
+
+	hw->wiphy->interface_modes =
+		BIT(NL80211_IFTYPE_MESH_POINT) |
+		BIT(NL80211_IFTYPE_STATION) |
+		BIT(NL80211_IFTYPE_ADHOC) |
+		BIT(NL80211_IFTYPE_AP);
+
+	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
+
+	hw->max_signal = 100;
+	hw->queues = 1;
+	hw->extra_tx_headroom = sizeof(struct zd_ctrlset);
+
+	/*
+	 * Tell mac80211 that we support multi rate retries
+	 */
+	hw->max_rates = IEEE80211_TX_MAX_RATES;
+	hw->max_rate_tries = 18;	/* 9 rates * 2 retries/rate */
+
+	skb_queue_head_init(&mac->ack_wait_queue);
+	mac->ack_pending = 0;
+
+	zd_chip_init(&mac->chip, hw, intf);
+	housekeeping_init(mac);
+	beacon_init(mac);
+	INIT_WORK(&mac->process_intr, zd_process_intr);
+
+	SET_IEEE80211_DEV(hw, &intf->dev);
+	return hw;
+}
+
+#define BEACON_WATCHDOG_DELAY round_jiffies_relative(HZ)
+
+static void beacon_watchdog_handler(struct work_struct *work)
+{
+	struct zd_mac *mac =
+		container_of(work, struct zd_mac, beacon.watchdog_work.work);
+	struct sk_buff *beacon;
+	unsigned long timeout;
+	int interval, period;
+
+	if (!test_bit(ZD_DEVICE_RUNNING, &mac->flags))
+		goto rearm;
+	if (mac->type != NL80211_IFTYPE_AP || !mac->vif)
+		goto rearm;
+
+	spin_lock_irq(&mac->lock);
+	interval = mac->beacon.interval;
+	period = mac->beacon.period;
+	timeout = mac->beacon.last_update +
+			msecs_to_jiffies(interval * 1024 / 1000) * 3;
+	spin_unlock_irq(&mac->lock);
+
+	if (interval > 0 && time_is_before_jiffies(timeout)) {
+		dev_dbg_f(zd_mac_dev(mac), "beacon interrupt stalled, "
+					   "restarting. "
+					   "(interval: %d, dtim: %d)\n",
+					   interval, period);
+
+		zd_chip_disable_hwint(&mac->chip);
+
+		beacon = ieee80211_beacon_get(mac->hw, mac->vif, 0);
+		if (beacon) {
+			zd_mac_free_cur_beacon(mac);
+
+			zd_mac_config_beacon(mac->hw, beacon, false);
+		}
+
+		zd_set_beacon_interval(&mac->chip, interval, period, mac->type);
+
+		zd_chip_enable_hwint(&mac->chip);
+
+		spin_lock_irq(&mac->lock);
+		mac->beacon.last_update = jiffies;
+		spin_unlock_irq(&mac->lock);
+	}
+
+rearm:
+	queue_delayed_work(zd_workqueue, &mac->beacon.watchdog_work,
+			   BEACON_WATCHDOG_DELAY);
+}
+
+static void beacon_init(struct zd_mac *mac)
+{
+	INIT_DELAYED_WORK(&mac->beacon.watchdog_work, beacon_watchdog_handler);
+}
+
+static void beacon_enable(struct zd_mac *mac)
+{
+	dev_dbg_f(zd_mac_dev(mac), "\n");
+
+	mac->beacon.last_update = jiffies;
+	queue_delayed_work(zd_workqueue, &mac->beacon.watchdog_work,
+			   BEACON_WATCHDOG_DELAY);
+}
+
+static void beacon_disable(struct zd_mac *mac)
+{
+	dev_dbg_f(zd_mac_dev(mac), "\n");
+	cancel_delayed_work_sync(&mac->beacon.watchdog_work);
+
+	zd_mac_free_cur_beacon(mac);
+}
+
+#define LINK_LED_WORK_DELAY HZ
+
+static void link_led_handler(struct work_struct *work)
+{
+	struct zd_mac *mac =
+		container_of(work, struct zd_mac, housekeeping.link_led_work.work);
+	struct zd_chip *chip = &mac->chip;
+	int is_associated;
+	int r;
+
+	if (!test_bit(ZD_DEVICE_RUNNING, &mac->flags))
+		goto requeue;
+
+	spin_lock_irq(&mac->lock);
+	is_associated = mac->associated;
+	spin_unlock_irq(&mac->lock);
+
+	r = zd_chip_control_leds(chip,
+		                 is_associated ? ZD_LED_ASSOCIATED : ZD_LED_SCANNING);
+	if (r)
+		dev_dbg_f(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r);
+
+requeue:
+	queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work,
+		           LINK_LED_WORK_DELAY);
+}
+
+static void housekeeping_init(struct zd_mac *mac)
+{
+	INIT_DELAYED_WORK(&mac->housekeeping.link_led_work, link_led_handler);
+}
+
+static void housekeeping_enable(struct zd_mac *mac)
+{
+	dev_dbg_f(zd_mac_dev(mac), "\n");
+	queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work,
+			   0);
+}
+
+static void housekeeping_disable(struct zd_mac *mac)
+{
+	dev_dbg_f(zd_mac_dev(mac), "\n");
+	cancel_delayed_work_sync(&mac->housekeeping.link_led_work);
+	zd_chip_control_leds(&mac->chip, ZD_LED_OFF);
+}
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_mac.h b/drivers/net/wireless/zydas/zd1211rw/zd_mac.h
new file mode 100644
index 000000000..5ff84bdc5
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_mac.h
@@ -0,0 +1,315 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#ifndef _ZD_MAC_H
+#define _ZD_MAC_H
+
+#include <linux/kernel.h>
+#include <net/mac80211.h>
+
+#include "zd_chip.h"
+
+struct zd_ctrlset {
+	u8     modulation;
+	__le16 tx_length;
+	u8     control;
+	/* stores only the difference to tx_length on ZD1211B */
+	__le16 packet_length;
+	__le16 current_length;
+	u8     service;
+	__le16  next_frame_length;
+} __packed;
+
+#define ZD_CS_RESERVED_SIZE	25
+
+/* The field modulation of struct zd_ctrlset controls the bit rate, the use
+ * of short or long preambles in 802.11b (CCK mode) or the use of 802.11a or
+ * 802.11g in OFDM mode.
+ *
+ * The term zd-rate is used for the combination of the modulation type flag
+ * and the "pure" rate value.
+ */
+#define ZD_PURE_RATE_MASK       0x0f
+#define ZD_MODULATION_TYPE_MASK 0x10
+#define ZD_RATE_MASK            (ZD_PURE_RATE_MASK|ZD_MODULATION_TYPE_MASK)
+#define ZD_PURE_RATE(modulation) ((modulation) & ZD_PURE_RATE_MASK)
+#define ZD_MODULATION_TYPE(modulation) ((modulation) & ZD_MODULATION_TYPE_MASK)
+#define ZD_RATE(modulation) ((modulation) & ZD_RATE_MASK)
+
+/* The two possible modulation types. Notify that 802.11b doesn't use the CCK
+ * codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain
+ * consistent with uses the term at other places.
+ */
+#define ZD_CCK                  0x00
+#define ZD_OFDM                 0x10
+
+/* The ZD1211 firmware uses proprietary encodings of the 802.11b (CCK) rates.
+ * For OFDM the PLCP rate encodings are used. We combine these "pure" rates
+ * with the modulation type flag and call the resulting values zd-rates.
+ */
+#define ZD_CCK_RATE_1M          (ZD_CCK|0x00)
+#define ZD_CCK_RATE_2M          (ZD_CCK|0x01)
+#define ZD_CCK_RATE_5_5M        (ZD_CCK|0x02)
+#define ZD_CCK_RATE_11M         (ZD_CCK|0x03)
+#define ZD_OFDM_RATE_6M         (ZD_OFDM|ZD_OFDM_PLCP_RATE_6M)
+#define ZD_OFDM_RATE_9M         (ZD_OFDM|ZD_OFDM_PLCP_RATE_9M)
+#define ZD_OFDM_RATE_12M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_12M)
+#define ZD_OFDM_RATE_18M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_18M)
+#define ZD_OFDM_RATE_24M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_24M)
+#define ZD_OFDM_RATE_36M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_36M)
+#define ZD_OFDM_RATE_48M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_48M)
+#define ZD_OFDM_RATE_54M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_54M)
+
+/* The bit 5 of the zd_ctrlset modulation field controls the preamble in CCK
+ * mode or the 802.11a/802.11g selection in OFDM mode.
+ */
+#define ZD_CCK_PREA_LONG        0x00
+#define ZD_CCK_PREA_SHORT       0x20
+#define ZD_OFDM_MODE_11G        0x00
+#define ZD_OFDM_MODE_11A        0x20
+
+/* zd_ctrlset control field */
+#define ZD_CS_NEED_RANDOM_BACKOFF	0x01
+#define ZD_CS_NO_ACK			0x02
+
+#define ZD_CS_FRAME_TYPE_MASK		0x0c
+#define ZD_CS_DATA_FRAME		0x00
+#define ZD_CS_PS_POLL_FRAME		0x04
+#define ZD_CS_MANAGEMENT_FRAME		0x08
+#define ZD_CS_NO_SEQUENCE_CTL_FRAME	0x0c
+
+#define ZD_CS_WAKE_DESTINATION		0x10
+#define ZD_CS_RTS			0x20
+#define ZD_CS_ENCRYPT			0x40
+#define ZD_CS_SELF_CTS			0x80
+
+/* Incoming frames are prepended by a PLCP header */
+#define ZD_PLCP_HEADER_SIZE		5
+
+struct rx_length_info {
+	__le16 length[3];
+	__le16 tag;
+} __packed;
+
+#define RX_LENGTH_INFO_TAG		0x697e
+
+struct rx_status {
+	u8 signal_quality_cck;
+	/* rssi */
+	u8 signal_strength;
+	u8 signal_quality_ofdm;
+	u8 decryption_type;
+	u8 frame_status;
+} __packed;
+
+/* rx_status field decryption_type */
+#define ZD_RX_NO_WEP	0
+#define ZD_RX_WEP64	1
+#define ZD_RX_TKIP	2
+#define ZD_RX_AES	4
+#define ZD_RX_WEP128	5
+#define ZD_RX_WEP256	6
+
+/* rx_status field frame_status */
+#define ZD_RX_FRAME_MODULATION_MASK	0x01
+#define ZD_RX_CCK			0x00
+#define ZD_RX_OFDM			0x01
+
+#define ZD_RX_TIMEOUT_ERROR		0x02
+#define ZD_RX_FIFO_OVERRUN_ERROR	0x04
+#define ZD_RX_DECRYPTION_ERROR		0x08
+#define ZD_RX_CRC32_ERROR		0x10
+#define ZD_RX_NO_ADDR1_MATCH_ERROR	0x20
+#define ZD_RX_CRC16_ERROR		0x40
+#define ZD_RX_ERROR			0x80
+
+struct tx_retry_rate {
+	int count;	/* number of valid element in rate[] array */
+	int rate[10];	/* retry rates, described by an index in zd_rates[] */
+};
+
+struct tx_status {
+	u8 type;	/* must always be 0x01 : USB_INT_TYPE */
+	u8 id;		/* must always be 0xa0 : USB_INT_ID_RETRY_FAILED */
+	u8 rate;
+	u8 pad;
+	u8 mac[ETH_ALEN];
+	u8 retry;
+	u8 failure;
+} __packed;
+
+enum mac_flags {
+	MAC_FIXED_CHANNEL = 0x01,
+};
+
+struct housekeeping {
+	struct delayed_work link_led_work;
+};
+
+struct beacon {
+	struct delayed_work watchdog_work;
+	struct sk_buff *cur_beacon;
+	unsigned long last_update;
+	u16 interval;
+	u8 period;
+};
+
+enum zd_device_flags {
+	ZD_DEVICE_RUNNING,
+};
+
+#define ZD_MAC_STATS_BUFFER_SIZE 16
+
+#define ZD_MAC_MAX_ACK_WAITERS 50
+
+struct zd_mac {
+	struct zd_chip chip;
+	spinlock_t lock;
+	spinlock_t intr_lock;
+	struct ieee80211_hw *hw;
+	struct ieee80211_vif *vif;
+	struct housekeeping housekeeping;
+	struct beacon beacon;
+	struct work_struct set_rts_cts_work;
+	struct work_struct process_intr;
+	struct zd_mc_hash multicast_hash;
+	u8 intr_buffer[USB_MAX_EP_INT_BUFFER];
+	u8 regdomain;
+	u8 default_regdomain;
+	u8 channel;
+	int type;
+	int associated;
+	unsigned long flags;
+	struct sk_buff_head ack_wait_queue;
+	struct ieee80211_channel channels[14];
+	struct ieee80211_rate rates[12];
+	struct ieee80211_supported_band band;
+
+	/* Short preamble (used for RTS/CTS) */
+	unsigned int short_preamble:1;
+
+	/* whether to pass frames with CRC errors to stack */
+	unsigned int pass_failed_fcs:1;
+
+	/* whether to pass control frames to stack */
+	unsigned int pass_ctrl:1;
+
+	/* whether we have received a 802.11 ACK that is pending */
+	unsigned int ack_pending:1;
+
+	/* signal strength of the last 802.11 ACK received */
+	int ack_signal;
+};
+
+#define ZD_REGDOMAIN_FCC	0x10
+#define ZD_REGDOMAIN_IC		0x20
+#define ZD_REGDOMAIN_ETSI	0x30
+#define ZD_REGDOMAIN_SPAIN	0x31
+#define ZD_REGDOMAIN_FRANCE	0x32
+#define ZD_REGDOMAIN_JAPAN_2	0x40
+#define ZD_REGDOMAIN_JAPAN	0x41
+#define ZD_REGDOMAIN_JAPAN_3	0x49
+
+enum {
+	MIN_CHANNEL24 = 1,
+	MAX_CHANNEL24 = 14,
+};
+
+#define ZD_PLCP_SERVICE_LENGTH_EXTENSION 0x80
+
+struct ofdm_plcp_header {
+	u8 prefix[3];
+	__le16 service;
+} __packed;
+
+static inline u8 zd_ofdm_plcp_header_rate(const struct ofdm_plcp_header *header)
+{
+	return header->prefix[0] & 0xf;
+}
+
+/* The following defines give the encoding of the 4-bit rate field in the
+ * OFDM (802.11a/802.11g) PLCP header. Notify that these values are used to
+ * define the zd-rate values for OFDM.
+ *
+ * See the struct zd_ctrlset definition in zd_mac.h.
+ */
+#define ZD_OFDM_PLCP_RATE_6M	0xb
+#define ZD_OFDM_PLCP_RATE_9M	0xf
+#define ZD_OFDM_PLCP_RATE_12M	0xa
+#define ZD_OFDM_PLCP_RATE_18M	0xe
+#define ZD_OFDM_PLCP_RATE_24M	0x9
+#define ZD_OFDM_PLCP_RATE_36M	0xd
+#define ZD_OFDM_PLCP_RATE_48M	0x8
+#define ZD_OFDM_PLCP_RATE_54M	0xc
+
+struct cck_plcp_header {
+	u8 signal;
+	u8 service;
+	__le16 length;
+	__le16 crc16;
+} __packed;
+
+static inline u8 zd_cck_plcp_header_signal(const struct cck_plcp_header *header)
+{
+	return header->signal;
+}
+
+/* These defines give the encodings of the signal field in the 802.11b PLCP
+ * header. The signal field gives the bit rate of the following packet. Even
+ * if technically wrong we use CCK here also for the 1 MBit/s and 2 MBit/s
+ * rate to stay consistent with Zydas and our use of the term.
+ *
+ * Notify that these values are *not* used in the zd-rates.
+ */
+#define ZD_CCK_PLCP_SIGNAL_1M	0x0a
+#define ZD_CCK_PLCP_SIGNAL_2M	0x14
+#define ZD_CCK_PLCP_SIGNAL_5M5	0x37
+#define ZD_CCK_PLCP_SIGNAL_11M	0x6e
+
+static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw)
+{
+	return hw->priv;
+}
+
+static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
+{
+	return container_of(chip, struct zd_mac, chip);
+}
+
+static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
+{
+	return zd_chip_to_mac(zd_usb_to_chip(usb));
+}
+
+static inline u8 *zd_mac_get_perm_addr(struct zd_mac *mac)
+{
+	return mac->hw->wiphy->perm_addr;
+}
+
+#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
+
+struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf);
+void zd_mac_clear(struct zd_mac *mac);
+
+int zd_mac_preinit_hw(struct ieee80211_hw *hw);
+int zd_mac_init_hw(struct ieee80211_hw *hw);
+
+int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length);
+void zd_mac_tx_failed(struct urb *urb);
+void zd_mac_tx_to_dev(struct sk_buff *skb, int error);
+
+int zd_op_start(struct ieee80211_hw *hw);
+void zd_op_stop(struct ieee80211_hw *hw);
+int zd_restore_settings(struct zd_mac *mac);
+
+#ifdef DEBUG
+void zd_dump_rx_status(const struct rx_status *status);
+#else
+#define zd_dump_rx_status(status)
+#endif /* DEBUG */
+
+#endif /* _ZD_MAC_H */
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_rf.c b/drivers/net/wireless/zydas/zd1211rw/zd_rf.c
new file mode 100644
index 000000000..d356ae330
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_rf.c
@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#include <linux/errno.h>
+#include <linux/string.h>
+
+#include "zd_def.h"
+#include "zd_rf.h"
+#include "zd_mac.h"
+#include "zd_chip.h"
+
+static const char * const rfs[] = {
+	[0]		= "unknown RF0",
+	[1]		= "unknown RF1",
+	[UW2451_RF]	= "UW2451_RF",
+	[UCHIP_RF]	= "UCHIP_RF",
+	[AL2230_RF]	= "AL2230_RF",
+	[AL7230B_RF]	= "AL7230B_RF",
+	[THETA_RF]	= "THETA_RF",
+	[AL2210_RF]	= "AL2210_RF",
+	[MAXIM_NEW_RF]	= "MAXIM_NEW_RF",
+	[UW2453_RF]	= "UW2453_RF",
+	[AL2230S_RF]	= "AL2230S_RF",
+	[RALINK_RF]	= "RALINK_RF",
+	[INTERSIL_RF]	= "INTERSIL_RF",
+	[RF2959_RF]	= "RF2959_RF",
+	[MAXIM_NEW2_RF]	= "MAXIM_NEW2_RF",
+	[PHILIPS_RF]	= "PHILIPS_RF",
+};
+
+const char *zd_rf_name(u8 type)
+{
+	if (type & 0xf0)
+		type = 0;
+	return rfs[type];
+}
+
+void zd_rf_init(struct zd_rf *rf)
+{
+	memset(rf, 0, sizeof(*rf));
+
+	/* default to update channel integration, as almost all RF's do want
+	 * this */
+	rf->update_channel_int = 1;
+}
+
+void zd_rf_clear(struct zd_rf *rf)
+{
+	if (rf->clear)
+		rf->clear(rf);
+	ZD_MEMCLEAR(rf, sizeof(*rf));
+}
+
+int zd_rf_init_hw(struct zd_rf *rf, u8 type)
+{
+	int r = 0;
+	int t;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	switch (type) {
+	case RF2959_RF:
+		r = zd_rf_init_rf2959(rf);
+		break;
+	case AL2230_RF:
+	case AL2230S_RF:
+		r = zd_rf_init_al2230(rf);
+		break;
+	case AL7230B_RF:
+		r = zd_rf_init_al7230b(rf);
+		break;
+	case MAXIM_NEW_RF:
+	case UW2453_RF:
+		r = zd_rf_init_uw2453(rf);
+		break;
+	default:
+		dev_err(zd_chip_dev(chip),
+			"RF %s %#x is not supported\n", zd_rf_name(type), type);
+		rf->type = 0;
+		return -ENODEV;
+	}
+
+	if (r)
+		return r;
+
+	rf->type = type;
+
+	r = zd_chip_lock_phy_regs(chip);
+	if (r)
+		return r;
+	t = rf->init_hw(rf);
+	r = zd_chip_unlock_phy_regs(chip);
+	if (t)
+		r = t;
+	return r;
+}
+
+int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
+{
+	return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
+}
+
+int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
+{
+	int r;
+
+	ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
+	if (channel < MIN_CHANNEL24)
+		return -EINVAL;
+	if (channel > MAX_CHANNEL24)
+		return -EINVAL;
+	dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
+
+	r = rf->set_channel(rf, channel);
+	if (r >= 0)
+		rf->channel = channel;
+	return r;
+}
+
+int zd_switch_radio_on(struct zd_rf *rf)
+{
+	int r, t;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = zd_chip_lock_phy_regs(chip);
+	if (r)
+		return r;
+	t = rf->switch_radio_on(rf);
+	r = zd_chip_unlock_phy_regs(chip);
+	if (t)
+		r = t;
+	return r;
+}
+
+int zd_switch_radio_off(struct zd_rf *rf)
+{
+	int r, t;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	/* TODO: move phy regs handling to zd_chip */
+	ZD_ASSERT(mutex_is_locked(&chip->mutex));
+	r = zd_chip_lock_phy_regs(chip);
+	if (r)
+		return r;
+	t = rf->switch_radio_off(rf);
+	r = zd_chip_unlock_phy_regs(chip);
+	if (t)
+		r = t;
+	return r;
+}
+
+int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
+{
+	if (!rf->patch_6m_band_edge)
+		return 0;
+
+	return rf->patch_6m_band_edge(rf, channel);
+}
+
+int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
+{
+	return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
+}
+
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_rf.h b/drivers/net/wireless/zydas/zd1211rw/zd_rf.h
new file mode 100644
index 000000000..8bfec9e75
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_rf.h
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#ifndef _ZD_RF_H
+#define _ZD_RF_H
+
+#define UW2451_RF			0x2
+#define UCHIP_RF			0x3
+#define AL2230_RF			0x4
+#define AL7230B_RF			0x5	/* a,b,g */
+#define THETA_RF			0x6
+#define AL2210_RF			0x7
+#define MAXIM_NEW_RF			0x8
+#define UW2453_RF			0x9
+#define AL2230S_RF			0xa
+#define RALINK_RF			0xb
+#define INTERSIL_RF			0xc
+#define RF2959_RF			0xd
+#define MAXIM_NEW2_RF			0xe
+#define PHILIPS_RF			0xf
+
+#define RF_CHANNEL(ch) [(ch)-1]
+
+/* Provides functions of the RF transceiver. */
+
+enum {
+	RF_REG_BITS = 6,
+	RF_VALUE_BITS = 18,
+	RF_RV_BITS = RF_REG_BITS + RF_VALUE_BITS,
+};
+
+struct zd_rf {
+	u8 type;
+
+	u8 channel;
+
+	/* whether channel integration and calibration should be updated
+	 * defaults to 1 (yes) */
+	u8 update_channel_int:1;
+
+	/* whether ZD_CR47 should be patched from the EEPROM, if the appropriate
+	 * flag is set in the POD. The vendor driver suggests that this should
+	 * be done for all RF's, but a bug in their code prevents but their
+	 * HW_OverWritePhyRegFromE2P() routine from ever taking effect. */
+	u8 patch_cck_gain:1;
+
+	/* private RF driver data */
+	void *priv;
+
+	/* RF-specific functions */
+	int (*init_hw)(struct zd_rf *rf);
+	int (*set_channel)(struct zd_rf *rf, u8 channel);
+	int (*switch_radio_on)(struct zd_rf *rf);
+	int (*switch_radio_off)(struct zd_rf *rf);
+	int (*patch_6m_band_edge)(struct zd_rf *rf, u8 channel);
+	void (*clear)(struct zd_rf *rf);
+};
+
+const char *zd_rf_name(u8 type);
+void zd_rf_init(struct zd_rf *rf);
+void zd_rf_clear(struct zd_rf *rf);
+int zd_rf_init_hw(struct zd_rf *rf, u8 type);
+
+int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size);
+
+int zd_rf_set_channel(struct zd_rf *rf, u8 channel);
+
+int zd_switch_radio_on(struct zd_rf *rf);
+int zd_switch_radio_off(struct zd_rf *rf);
+
+int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel);
+int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel);
+
+static inline int zd_rf_should_update_pwr_int(struct zd_rf *rf)
+{
+	return rf->update_channel_int;
+}
+
+static inline int zd_rf_should_patch_cck_gain(struct zd_rf *rf)
+{
+	return rf->patch_cck_gain;
+}
+
+int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel);
+int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel);
+
+/* Functions for individual RF chips */
+
+int zd_rf_init_rf2959(struct zd_rf *rf);
+int zd_rf_init_al2230(struct zd_rf *rf);
+int zd_rf_init_al7230b(struct zd_rf *rf);
+int zd_rf_init_uw2453(struct zd_rf *rf);
+
+#endif /* _ZD_RF_H */
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_rf_al2230.c b/drivers/net/wireless/zydas/zd1211rw/zd_rf_al2230.c
new file mode 100644
index 000000000..23ee5571e
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_rf_al2230.c
@@ -0,0 +1,431 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#include <linux/kernel.h>
+
+#include "zd_rf.h"
+#include "zd_usb.h"
+#include "zd_chip.h"
+
+#define IS_AL2230S(chip) ((chip)->al2230s_bit || (chip)->rf.type == AL2230S_RF)
+
+static const u32 zd1211_al2230_table[][3] = {
+	RF_CHANNEL( 1) = { 0x03f790, 0x033331, 0x00000d, },
+	RF_CHANNEL( 2) = { 0x03f790, 0x0b3331, 0x00000d, },
+	RF_CHANNEL( 3) = { 0x03e790, 0x033331, 0x00000d, },
+	RF_CHANNEL( 4) = { 0x03e790, 0x0b3331, 0x00000d, },
+	RF_CHANNEL( 5) = { 0x03f7a0, 0x033331, 0x00000d, },
+	RF_CHANNEL( 6) = { 0x03f7a0, 0x0b3331, 0x00000d, },
+	RF_CHANNEL( 7) = { 0x03e7a0, 0x033331, 0x00000d, },
+	RF_CHANNEL( 8) = { 0x03e7a0, 0x0b3331, 0x00000d, },
+	RF_CHANNEL( 9) = { 0x03f7b0, 0x033331, 0x00000d, },
+	RF_CHANNEL(10) = { 0x03f7b0, 0x0b3331, 0x00000d, },
+	RF_CHANNEL(11) = { 0x03e7b0, 0x033331, 0x00000d, },
+	RF_CHANNEL(12) = { 0x03e7b0, 0x0b3331, 0x00000d, },
+	RF_CHANNEL(13) = { 0x03f7c0, 0x033331, 0x00000d, },
+	RF_CHANNEL(14) = { 0x03e7c0, 0x066661, 0x00000d, },
+};
+
+static const u32 zd1211b_al2230_table[][3] = {
+	RF_CHANNEL( 1) = { 0x09efc0, 0x8cccc0, 0xb00000, },
+	RF_CHANNEL( 2) = { 0x09efc0, 0x8cccd0, 0xb00000, },
+	RF_CHANNEL( 3) = { 0x09e7c0, 0x8cccc0, 0xb00000, },
+	RF_CHANNEL( 4) = { 0x09e7c0, 0x8cccd0, 0xb00000, },
+	RF_CHANNEL( 5) = { 0x05efc0, 0x8cccc0, 0xb00000, },
+	RF_CHANNEL( 6) = { 0x05efc0, 0x8cccd0, 0xb00000, },
+	RF_CHANNEL( 7) = { 0x05e7c0, 0x8cccc0, 0xb00000, },
+	RF_CHANNEL( 8) = { 0x05e7c0, 0x8cccd0, 0xb00000, },
+	RF_CHANNEL( 9) = { 0x0defc0, 0x8cccc0, 0xb00000, },
+	RF_CHANNEL(10) = { 0x0defc0, 0x8cccd0, 0xb00000, },
+	RF_CHANNEL(11) = { 0x0de7c0, 0x8cccc0, 0xb00000, },
+	RF_CHANNEL(12) = { 0x0de7c0, 0x8cccd0, 0xb00000, },
+	RF_CHANNEL(13) = { 0x03efc0, 0x8cccc0, 0xb00000, },
+	RF_CHANNEL(14) = { 0x03e7c0, 0x866660, 0xb00000, },
+};
+
+static const struct zd_ioreq16 zd1211b_ioreqs_shared_1[] = {
+	{ ZD_CR240, 0x57 }, { ZD_CR9,   0xe0 },
+};
+
+static const struct zd_ioreq16 ioreqs_init_al2230s[] = {
+	{ ZD_CR47,   0x1e }, /* MARK_002 */
+	{ ZD_CR106,  0x22 },
+	{ ZD_CR107,  0x2a }, /* MARK_002 */
+	{ ZD_CR109,  0x13 }, /* MARK_002 */
+	{ ZD_CR118,  0xf8 }, /* MARK_002 */
+	{ ZD_CR119,  0x12 }, { ZD_CR122,  0xe0 },
+	{ ZD_CR128,  0x10 }, /* MARK_001 from 0xe->0x10 */
+	{ ZD_CR129,  0x0e }, /* MARK_001 from 0xd->0x0e */
+	{ ZD_CR130,  0x10 }, /* MARK_001 from 0xb->0x0d */
+};
+
+static int zd1211b_al2230_finalize_rf(struct zd_chip *chip)
+{
+	int r;
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR80,  0x30 }, { ZD_CR81,  0x30 }, { ZD_CR79,  0x58 },
+		{ ZD_CR12,  0xf0 }, { ZD_CR77,  0x1b }, { ZD_CR78,  0x58 },
+		{ ZD_CR203, 0x06 },
+		{ },
+
+		{ ZD_CR240, 0x80 },
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	if (r)
+		return r;
+
+	/* related to antenna selection? */
+	if (chip->new_phy_layout) {
+		r = zd_iowrite16_locked(chip, 0xe1, ZD_CR9);
+		if (r)
+			return r;
+	}
+
+	return zd_iowrite16_locked(chip, 0x06, ZD_CR203);
+}
+
+static int zd1211_al2230_init_hw(struct zd_rf *rf)
+{
+	int r;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	static const struct zd_ioreq16 ioreqs_init[] = {
+		{ ZD_CR15,   0x20 }, { ZD_CR23,   0x40 }, { ZD_CR24,  0x20 },
+		{ ZD_CR26,   0x11 }, { ZD_CR28,   0x3e }, { ZD_CR29,  0x00 },
+		{ ZD_CR44,   0x33 }, { ZD_CR106,  0x2a }, { ZD_CR107, 0x1a },
+		{ ZD_CR109,  0x09 }, { ZD_CR110,  0x27 }, { ZD_CR111, 0x2b },
+		{ ZD_CR112,  0x2b }, { ZD_CR119,  0x0a }, { ZD_CR10,  0x89 },
+		/* for newest (3rd cut) AL2300 */
+		{ ZD_CR17,   0x28 },
+		{ ZD_CR26,   0x93 }, { ZD_CR34,   0x30 },
+		/* for newest (3rd cut) AL2300 */
+		{ ZD_CR35,   0x3e },
+		{ ZD_CR41,   0x24 }, { ZD_CR44,   0x32 },
+		/* for newest (3rd cut) AL2300 */
+		{ ZD_CR46,   0x96 },
+		{ ZD_CR47,   0x1e }, { ZD_CR79,   0x58 }, { ZD_CR80,  0x30 },
+		{ ZD_CR81,   0x30 }, { ZD_CR87,   0x0a }, { ZD_CR89,  0x04 },
+		{ ZD_CR92,   0x0a }, { ZD_CR99,   0x28 }, { ZD_CR100, 0x00 },
+		{ ZD_CR101,  0x13 }, { ZD_CR102,  0x27 }, { ZD_CR106, 0x24 },
+		{ ZD_CR107,  0x2a }, { ZD_CR109,  0x09 }, { ZD_CR110, 0x13 },
+		{ ZD_CR111,  0x1f }, { ZD_CR112,  0x1f }, { ZD_CR113, 0x27 },
+		{ ZD_CR114,  0x27 },
+		/* for newest (3rd cut) AL2300 */
+		{ ZD_CR115,  0x24 },
+		{ ZD_CR116,  0x24 }, { ZD_CR117,  0xf4 }, { ZD_CR118, 0xfc },
+		{ ZD_CR119,  0x10 }, { ZD_CR120,  0x4f }, { ZD_CR121, 0x77 },
+		{ ZD_CR122,  0xe0 }, { ZD_CR137,  0x88 }, { ZD_CR252, 0xff },
+		{ ZD_CR253,  0xff },
+	};
+
+	static const struct zd_ioreq16 ioreqs_pll[] = {
+		/* shdnb(PLL_ON)=0 */
+		{ ZD_CR251,  0x2f },
+		/* shdnb(PLL_ON)=1 */
+		{ ZD_CR251,  0x3f },
+		{ ZD_CR138,  0x28 }, { ZD_CR203,  0x06 },
+	};
+
+	static const u32 rv1[] = {
+		/* Channel 1 */
+		0x03f790,
+		0x033331,
+		0x00000d,
+
+		0x0b3331,
+		0x03b812,
+		0x00fff3,
+	};
+
+	static const u32 rv2[] = {
+		0x000da4,
+		0x0f4dc5, /* fix freq shift, 0x04edc5 */
+		0x0805b6,
+		0x011687,
+		0x000688,
+		0x0403b9, /* external control TX power (ZD_CR31) */
+		0x00dbba,
+		0x00099b,
+		0x0bdffc,
+		0x00000d,
+		0x00500f,
+	};
+
+	static const u32 rv3[] = {
+		0x00d00f,
+		0x004c0f,
+		0x00540f,
+		0x00700f,
+		0x00500f,
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs_init, ARRAY_SIZE(ioreqs_init));
+	if (r)
+		return r;
+
+	if (IS_AL2230S(chip)) {
+		r = zd_iowrite16a_locked(chip, ioreqs_init_al2230s,
+			ARRAY_SIZE(ioreqs_init_al2230s));
+		if (r)
+			return r;
+	}
+
+	r = zd_rfwritev_locked(chip, rv1, ARRAY_SIZE(rv1), RF_RV_BITS);
+	if (r)
+		return r;
+
+	/* improve band edge for AL2230S */
+	if (IS_AL2230S(chip))
+		r = zd_rfwrite_locked(chip, 0x000824, RF_RV_BITS);
+	else
+		r = zd_rfwrite_locked(chip, 0x0005a4, RF_RV_BITS);
+	if (r)
+		return r;
+
+	r = zd_rfwritev_locked(chip, rv2, ARRAY_SIZE(rv2), RF_RV_BITS);
+	if (r)
+		return r;
+
+	r = zd_iowrite16a_locked(chip, ioreqs_pll, ARRAY_SIZE(ioreqs_pll));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_locked(chip, rv3, ARRAY_SIZE(rv3), RF_RV_BITS);
+	if (r)
+		return r;
+
+	return 0;
+}
+
+static int zd1211b_al2230_init_hw(struct zd_rf *rf)
+{
+	int r;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	static const struct zd_ioreq16 ioreqs1[] = {
+		{ ZD_CR10,  0x89 }, { ZD_CR15,  0x20 },
+		{ ZD_CR17,  0x2B }, /* for newest(3rd cut) AL2230 */
+		{ ZD_CR23,  0x40 }, { ZD_CR24,  0x20 }, { ZD_CR26,  0x93 },
+		{ ZD_CR28,  0x3e }, { ZD_CR29,  0x00 },
+		{ ZD_CR33,  0x28 }, /* 5621 */
+		{ ZD_CR34,  0x30 },
+		{ ZD_CR35,  0x3e }, /* for newest(3rd cut) AL2230 */
+		{ ZD_CR41,  0x24 }, { ZD_CR44,  0x32 },
+		{ ZD_CR46,  0x99 }, /* for newest(3rd cut) AL2230 */
+		{ ZD_CR47,  0x1e },
+
+		/* ZD1211B 05.06.10 */
+		{ ZD_CR48,  0x06 }, { ZD_CR49,  0xf9 }, { ZD_CR51,  0x01 },
+		{ ZD_CR52,  0x80 }, { ZD_CR53,  0x7e }, { ZD_CR65,  0x00 },
+		{ ZD_CR66,  0x00 }, { ZD_CR67,  0x00 }, { ZD_CR68,  0x00 },
+		{ ZD_CR69,  0x28 },
+
+		{ ZD_CR79,  0x58 }, { ZD_CR80,  0x30 }, { ZD_CR81,  0x30 },
+		{ ZD_CR87,  0x0a }, { ZD_CR89,  0x04 },
+		{ ZD_CR91,  0x00 }, /* 5621 */
+		{ ZD_CR92,  0x0a },
+		{ ZD_CR98,  0x8d }, /* 4804,  for 1212 new algorithm */
+		{ ZD_CR99,  0x00 }, /* 5621 */
+		{ ZD_CR101, 0x13 }, { ZD_CR102, 0x27 },
+		{ ZD_CR106, 0x24 }, /* for newest(3rd cut) AL2230 */
+		{ ZD_CR107, 0x2a },
+		{ ZD_CR109, 0x13 }, /* 4804, for 1212 new algorithm */
+		{ ZD_CR110, 0x1f }, /* 4804, for 1212 new algorithm */
+		{ ZD_CR111, 0x1f }, { ZD_CR112, 0x1f }, { ZD_CR113, 0x27 },
+		{ ZD_CR114, 0x27 },
+		{ ZD_CR115, 0x26 }, /* 24->26 at 4902 for newest(3rd cut)
+				     * AL2230
+				     */
+		{ ZD_CR116, 0x24 },
+		{ ZD_CR117, 0xfa }, /* for 1211b */
+		{ ZD_CR118, 0xfa }, /* for 1211b */
+		{ ZD_CR119, 0x10 },
+		{ ZD_CR120, 0x4f },
+		{ ZD_CR121, 0x6c }, /* for 1211b */
+		{ ZD_CR122, 0xfc }, /* E0->FC at 4902 */
+		{ ZD_CR123, 0x57 }, /* 5623 */
+		{ ZD_CR125, 0xad }, /* 4804, for 1212 new algorithm */
+		{ ZD_CR126, 0x6c }, /* 5614 */
+		{ ZD_CR127, 0x03 }, /* 4804, for 1212 new algorithm */
+		{ ZD_CR137, 0x50 }, /* 5614 */
+		{ ZD_CR138, 0xa8 },
+		{ ZD_CR144, 0xac }, /* 5621 */
+		{ ZD_CR150, 0x0d }, { ZD_CR252, 0x34 }, { ZD_CR253, 0x34 },
+	};
+
+	static const u32 rv1[] = {
+		0x8cccd0,
+		0x481dc0,
+		0xcfff00,
+		0x25a000,
+	};
+
+	static const u32 rv2[] = {
+		/* To improve AL2230 yield, improve phase noise, 4713 */
+		0x25a000,
+		0xa3b2f0,
+
+		0x6da010, /* Reg6 update for MP versio */
+		0xe36280, /* Modified by jxiao for Bor-Chin on 2004/08/02 */
+		0x116000,
+		0x9dc020, /* External control TX power (ZD_CR31) */
+		0x5ddb00, /* RegA update for MP version */
+		0xd99000, /* RegB update for MP version */
+		0x3ffbd0, /* RegC update for MP version */
+		0xb00000, /* RegD update for MP version */
+
+		/* improve phase noise and remove phase calibration,4713 */
+		0xf01a00,
+	};
+
+	static const struct zd_ioreq16 ioreqs2[] = {
+		{ ZD_CR251, 0x2f }, /* shdnb(PLL_ON)=0 */
+		{ ZD_CR251, 0x7f }, /* shdnb(PLL_ON)=1 */
+	};
+
+	static const u32 rv3[] = {
+		/* To improve AL2230 yield, 4713 */
+		0xf01b00,
+		0xf01e00,
+		0xf01a00,
+	};
+
+	static const struct zd_ioreq16 ioreqs3[] = {
+		/* related to 6M band edge patching, happens unconditionally */
+		{ ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
+	};
+
+	r = zd_iowrite16a_locked(chip, zd1211b_ioreqs_shared_1,
+		ARRAY_SIZE(zd1211b_ioreqs_shared_1));
+	if (r)
+		return r;
+	r = zd_iowrite16a_locked(chip, ioreqs1, ARRAY_SIZE(ioreqs1));
+	if (r)
+		return r;
+
+	if (IS_AL2230S(chip)) {
+		r = zd_iowrite16a_locked(chip, ioreqs_init_al2230s,
+			ARRAY_SIZE(ioreqs_init_al2230s));
+		if (r)
+			return r;
+	}
+
+	r = zd_rfwritev_cr_locked(chip, zd1211b_al2230_table[0], 3);
+	if (r)
+		return r;
+	r = zd_rfwritev_cr_locked(chip, rv1, ARRAY_SIZE(rv1));
+	if (r)
+		return r;
+
+	if (IS_AL2230S(chip))
+		r = zd_rfwrite_locked(chip, 0x241000, RF_RV_BITS);
+	else
+		r = zd_rfwrite_locked(chip, 0x25a000, RF_RV_BITS);
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv2, ARRAY_SIZE(rv2));
+	if (r)
+		return r;
+	r = zd_iowrite16a_locked(chip, ioreqs2, ARRAY_SIZE(ioreqs2));
+	if (r)
+		return r;
+	r = zd_rfwritev_cr_locked(chip, rv3, ARRAY_SIZE(rv3));
+	if (r)
+		return r;
+	r = zd_iowrite16a_locked(chip, ioreqs3, ARRAY_SIZE(ioreqs3));
+	if (r)
+		return r;
+	return zd1211b_al2230_finalize_rf(chip);
+}
+
+static int zd1211_al2230_set_channel(struct zd_rf *rf, u8 channel)
+{
+	int r;
+	const u32 *rv = zd1211_al2230_table[channel-1];
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR138, 0x28 },
+		{ ZD_CR203, 0x06 },
+	};
+
+	r = zd_rfwritev_locked(chip, rv, 3, RF_RV_BITS);
+	if (r)
+		return r;
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int zd1211b_al2230_set_channel(struct zd_rf *rf, u8 channel)
+{
+	int r;
+	const u32 *rv = zd1211b_al2230_table[channel-1];
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	r = zd_iowrite16a_locked(chip, zd1211b_ioreqs_shared_1,
+		ARRAY_SIZE(zd1211b_ioreqs_shared_1));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv, 3);
+	if (r)
+		return r;
+
+	return zd1211b_al2230_finalize_rf(chip);
+}
+
+static int zd1211_al2230_switch_radio_on(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR11,  0x00 },
+		{ ZD_CR251, 0x3f },
+	};
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int zd1211b_al2230_switch_radio_on(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR11,  0x00 },
+		{ ZD_CR251, 0x7f },
+	};
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int al2230_switch_radio_off(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR11,  0x04 },
+		{ ZD_CR251, 0x2f },
+	};
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+int zd_rf_init_al2230(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	rf->switch_radio_off = al2230_switch_radio_off;
+	if (zd_chip_is_zd1211b(chip)) {
+		rf->init_hw = zd1211b_al2230_init_hw;
+		rf->set_channel = zd1211b_al2230_set_channel;
+		rf->switch_radio_on = zd1211b_al2230_switch_radio_on;
+	} else {
+		rf->init_hw = zd1211_al2230_init_hw;
+		rf->set_channel = zd1211_al2230_set_channel;
+		rf->switch_radio_on = zd1211_al2230_switch_radio_on;
+	}
+	rf->patch_6m_band_edge = zd_rf_generic_patch_6m;
+	rf->patch_cck_gain = 1;
+	return 0;
+}
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_rf_al7230b.c b/drivers/net/wireless/zydas/zd1211rw/zd_rf_al7230b.c
new file mode 100644
index 000000000..356783483
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_rf_al7230b.c
@@ -0,0 +1,482 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#include <linux/kernel.h>
+
+#include "zd_rf.h"
+#include "zd_usb.h"
+#include "zd_chip.h"
+
+static const u32 chan_rv[][2] = {
+	RF_CHANNEL( 1) = { 0x09ec00, 0x8cccc8 },
+	RF_CHANNEL( 2) = { 0x09ec00, 0x8cccd8 },
+	RF_CHANNEL( 3) = { 0x09ec00, 0x8cccc0 },
+	RF_CHANNEL( 4) = { 0x09ec00, 0x8cccd0 },
+	RF_CHANNEL( 5) = { 0x05ec00, 0x8cccc8 },
+	RF_CHANNEL( 6) = { 0x05ec00, 0x8cccd8 },
+	RF_CHANNEL( 7) = { 0x05ec00, 0x8cccc0 },
+	RF_CHANNEL( 8) = { 0x05ec00, 0x8cccd0 },
+	RF_CHANNEL( 9) = { 0x0dec00, 0x8cccc8 },
+	RF_CHANNEL(10) = { 0x0dec00, 0x8cccd8 },
+	RF_CHANNEL(11) = { 0x0dec00, 0x8cccc0 },
+	RF_CHANNEL(12) = { 0x0dec00, 0x8cccd0 },
+	RF_CHANNEL(13) = { 0x03ec00, 0x8cccc8 },
+	RF_CHANNEL(14) = { 0x03ec00, 0x866660 },
+};
+
+static const u32 std_rv[] = {
+	0x4ff821,
+	0xc5fbfc,
+	0x21ebfe,
+	0xafd401, /* freq shift 0xaad401 */
+	0x6cf56a,
+	0xe04073,
+	0x193d76,
+	0x9dd844,
+	0x500007,
+	0xd8c010,
+};
+
+static const u32 rv_init1[] = {
+	0x3c9000,
+	0xbfffff,
+	0x700000,
+	0xf15d58,
+};
+
+static const u32 rv_init2[] = {
+	0xf15d59,
+	0xf15d5c,
+	0xf15d58,
+};
+
+static const struct zd_ioreq16 ioreqs_sw[] = {
+	{ ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
+	{ ZD_CR38,  0x38 }, { ZD_CR136, 0xdf },
+};
+
+static int zd1211b_al7230b_finalize(struct zd_chip *chip)
+{
+	int r;
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR80,  0x30 }, { ZD_CR81,  0x30 }, { ZD_CR79,  0x58 },
+		{ ZD_CR12,  0xf0 }, { ZD_CR77,  0x1b }, { ZD_CR78,  0x58 },
+		{ ZD_CR203, 0x04 },
+		{ },
+		{ ZD_CR240, 0x80 },
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	if (r)
+		return r;
+
+	if (chip->new_phy_layout) {
+		/* antenna selection? */
+		r = zd_iowrite16_locked(chip, 0xe5, ZD_CR9);
+		if (r)
+			return r;
+	}
+
+	return zd_iowrite16_locked(chip, 0x04, ZD_CR203);
+}
+
+static int zd1211_al7230b_init_hw(struct zd_rf *rf)
+{
+	int r;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	/* All of these writes are identical to AL2230 unless otherwise
+	 * specified */
+	static const struct zd_ioreq16 ioreqs_1[] = {
+		/* This one is 7230-specific, and happens before the rest */
+		{ ZD_CR240,  0x57 },
+		{ },
+
+		{ ZD_CR15,   0x20 }, { ZD_CR23,   0x40 }, { ZD_CR24,  0x20 },
+		{ ZD_CR26,   0x11 }, { ZD_CR28,   0x3e }, { ZD_CR29,  0x00 },
+		{ ZD_CR44,   0x33 },
+		/* This value is different for 7230 (was: 0x2a) */
+		{ ZD_CR106,  0x22 },
+		{ ZD_CR107,  0x1a }, { ZD_CR109,  0x09 }, { ZD_CR110,  0x27 },
+		{ ZD_CR111,  0x2b }, { ZD_CR112,  0x2b }, { ZD_CR119,  0x0a },
+		/* This happened further down in AL2230,
+		 * and the value changed (was: 0xe0) */
+		{ ZD_CR122,  0xfc },
+		{ ZD_CR10,   0x89 },
+		/* for newest (3rd cut) AL2300 */
+		{ ZD_CR17,   0x28 },
+		{ ZD_CR26,   0x93 }, { ZD_CR34,   0x30 },
+		/* for newest (3rd cut) AL2300 */
+		{ ZD_CR35,   0x3e },
+		{ ZD_CR41,   0x24 }, { ZD_CR44,   0x32 },
+		/* for newest (3rd cut) AL2300 */
+		{ ZD_CR46,   0x96 },
+		{ ZD_CR47,   0x1e }, { ZD_CR79,   0x58 }, { ZD_CR80,  0x30 },
+		{ ZD_CR81,   0x30 }, { ZD_CR87,   0x0a }, { ZD_CR89,  0x04 },
+		{ ZD_CR92,   0x0a }, { ZD_CR99,   0x28 },
+		/* This value is different for 7230 (was: 0x00) */
+		{ ZD_CR100,  0x02 },
+		{ ZD_CR101,  0x13 }, { ZD_CR102,  0x27 },
+		/* This value is different for 7230 (was: 0x24) */
+		{ ZD_CR106,  0x22 },
+		/* This value is different for 7230 (was: 0x2a) */
+		{ ZD_CR107,  0x3f },
+		{ ZD_CR109,  0x09 },
+		/* This value is different for 7230 (was: 0x13) */
+		{ ZD_CR110,  0x1f },
+		{ ZD_CR111,  0x1f }, { ZD_CR112,  0x1f }, { ZD_CR113, 0x27 },
+		{ ZD_CR114,  0x27 },
+		/* for newest (3rd cut) AL2300 */
+		{ ZD_CR115,  0x24 },
+		/* This value is different for 7230 (was: 0x24) */
+		{ ZD_CR116,  0x3f },
+		/* This value is different for 7230 (was: 0xf4) */
+		{ ZD_CR117,  0xfa },
+		{ ZD_CR118,  0xfc }, { ZD_CR119,  0x10 }, { ZD_CR120, 0x4f },
+		{ ZD_CR121,  0x77 }, { ZD_CR137,  0x88 },
+		/* This one is 7230-specific */
+		{ ZD_CR138,  0xa8 },
+		/* This value is different for 7230 (was: 0xff) */
+		{ ZD_CR252,  0x34 },
+		/* This value is different for 7230 (was: 0xff) */
+		{ ZD_CR253,  0x34 },
+
+		/* PLL_OFF */
+		{ ZD_CR251, 0x2f },
+	};
+
+	static const struct zd_ioreq16 ioreqs_2[] = {
+		{ ZD_CR251, 0x3f }, /* PLL_ON */
+		{ ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
+		{ ZD_CR38,  0x38 }, { ZD_CR136, 0xdf },
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, chan_rv[0], ARRAY_SIZE(chan_rv[0]));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv_init1, ARRAY_SIZE(rv_init1));
+	if (r)
+		return r;
+
+	r = zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv_init2, ARRAY_SIZE(rv_init2));
+	if (r)
+		return r;
+
+	r = zd_iowrite16_locked(chip, 0x06, ZD_CR203);
+	if (r)
+		return r;
+	r = zd_iowrite16_locked(chip, 0x80, ZD_CR240);
+	if (r)
+		return r;
+
+	return 0;
+}
+
+static int zd1211b_al7230b_init_hw(struct zd_rf *rf)
+{
+	int r;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	static const struct zd_ioreq16 ioreqs_1[] = {
+		{ ZD_CR240, 0x57 }, { ZD_CR9,   0x9 },
+		{ },
+		{ ZD_CR10,  0x8b }, { ZD_CR15,  0x20 },
+		{ ZD_CR17,  0x2B }, /* for newest (3rd cut) AL2230 */
+		{ ZD_CR20,  0x10 }, /* 4N25->Stone Request */
+		{ ZD_CR23,  0x40 }, { ZD_CR24,  0x20 }, { ZD_CR26,  0x93 },
+		{ ZD_CR28,  0x3e }, { ZD_CR29,  0x00 },
+		{ ZD_CR33,  0x28 }, /* 5613 */
+		{ ZD_CR34,  0x30 },
+		{ ZD_CR35,  0x3e }, /* for newest (3rd cut) AL2230 */
+		{ ZD_CR41,  0x24 }, { ZD_CR44,  0x32 },
+		{ ZD_CR46,  0x99 }, /* for newest (3rd cut) AL2230 */
+		{ ZD_CR47,  0x1e },
+
+		/* ZD1215 5610 */
+		{ ZD_CR48,  0x00 }, { ZD_CR49,  0x00 }, { ZD_CR51,  0x01 },
+		{ ZD_CR52,  0x80 }, { ZD_CR53,  0x7e }, { ZD_CR65,  0x00 },
+		{ ZD_CR66,  0x00 }, { ZD_CR67,  0x00 }, { ZD_CR68,  0x00 },
+		{ ZD_CR69,  0x28 },
+
+		{ ZD_CR79,  0x58 }, { ZD_CR80,  0x30 }, { ZD_CR81,  0x30 },
+		{ ZD_CR87,  0x0A }, { ZD_CR89,  0x04 },
+		{ ZD_CR90,  0x58 }, /* 5112 */
+		{ ZD_CR91,  0x00 }, /* 5613 */
+		{ ZD_CR92,  0x0a },
+		{ ZD_CR98,  0x8d }, /* 4804, for 1212 new algorithm */
+		{ ZD_CR99,  0x00 }, { ZD_CR100, 0x02 }, { ZD_CR101, 0x13 },
+		{ ZD_CR102, 0x27 },
+		{ ZD_CR106, 0x20 }, /* change to 0x24 for AL7230B */
+		{ ZD_CR109, 0x13 }, /* 4804, for 1212 new algorithm */
+		{ ZD_CR112, 0x1f },
+	};
+
+	static const struct zd_ioreq16 ioreqs_new_phy[] = {
+		{ ZD_CR107, 0x28 },
+		{ ZD_CR110, 0x1f }, /* 5127, 0x13->0x1f */
+		{ ZD_CR111, 0x1f }, /* 0x13 to 0x1f for AL7230B */
+		{ ZD_CR116, 0x2a }, { ZD_CR118, 0xfa }, { ZD_CR119, 0x12 },
+		{ ZD_CR121, 0x6c }, /* 5613 */
+	};
+
+	static const struct zd_ioreq16 ioreqs_old_phy[] = {
+		{ ZD_CR107, 0x24 },
+		{ ZD_CR110, 0x13 }, /* 5127, 0x13->0x1f */
+		{ ZD_CR111, 0x13 }, /* 0x13 to 0x1f for AL7230B */
+		{ ZD_CR116, 0x24 }, { ZD_CR118, 0xfc }, { ZD_CR119, 0x11 },
+		{ ZD_CR121, 0x6a }, /* 5613 */
+	};
+
+	static const struct zd_ioreq16 ioreqs_2[] = {
+		{ ZD_CR113, 0x27 }, { ZD_CR114, 0x27 }, { ZD_CR115, 0x24 },
+		{ ZD_CR117, 0xfa }, { ZD_CR120, 0x4f },
+		{ ZD_CR122, 0xfc }, /* E0->FCh at 4901 */
+		{ ZD_CR123, 0x57 }, /* 5613 */
+		{ ZD_CR125, 0xad }, /* 4804, for 1212 new algorithm */
+		{ ZD_CR126, 0x6c }, /* 5613 */
+		{ ZD_CR127, 0x03 }, /* 4804, for 1212 new algorithm */
+		{ ZD_CR130, 0x10 },
+		{ ZD_CR131, 0x00 }, /* 5112 */
+		{ ZD_CR137, 0x50 }, /* 5613 */
+		{ ZD_CR138, 0xa8 }, /* 5112 */
+		{ ZD_CR144, 0xac }, /* 5613 */
+		{ ZD_CR148, 0x40 }, /* 5112 */
+		{ ZD_CR149, 0x40 }, /* 4O07, 50->40 */
+		{ ZD_CR150, 0x1a }, /* 5112, 0C->1A */
+		{ ZD_CR252, 0x34 }, { ZD_CR253, 0x34 },
+		{ ZD_CR251, 0x2f }, /* PLL_OFF */
+	};
+
+	static const struct zd_ioreq16 ioreqs_3[] = {
+		{ ZD_CR251, 0x7f }, /* PLL_ON */
+		{ ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
+		{ ZD_CR38,  0x38 }, { ZD_CR136, 0xdf },
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
+	if (r)
+		return r;
+
+	if (chip->new_phy_layout)
+		r = zd_iowrite16a_locked(chip, ioreqs_new_phy,
+			ARRAY_SIZE(ioreqs_new_phy));
+	else
+		r = zd_iowrite16a_locked(chip, ioreqs_old_phy,
+			ARRAY_SIZE(ioreqs_old_phy));
+	if (r)
+		return r;
+
+	r = zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, chan_rv[0], ARRAY_SIZE(chan_rv[0]));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv_init1, ARRAY_SIZE(rv_init1));
+	if (r)
+		return r;
+
+	r = zd_iowrite16a_locked(chip, ioreqs_3, ARRAY_SIZE(ioreqs_3));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv_init2, ARRAY_SIZE(rv_init2));
+	if (r)
+		return r;
+
+	return zd1211b_al7230b_finalize(chip);
+}
+
+static int zd1211_al7230b_set_channel(struct zd_rf *rf, u8 channel)
+{
+	int r;
+	const u32 *rv = chan_rv[channel-1];
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	static const struct zd_ioreq16 ioreqs[] = {
+		/* PLL_ON */
+		{ ZD_CR251, 0x3f },
+		{ ZD_CR203, 0x06 }, { ZD_CR240, 0x08 },
+	};
+
+	r = zd_iowrite16_locked(chip, 0x57, ZD_CR240);
+	if (r)
+		return r;
+
+	/* PLL_OFF */
+	r = zd_iowrite16_locked(chip, 0x2f, ZD_CR251);
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
+	if (r)
+		return r;
+
+	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
+	if (r)
+		return r;
+	r = zd_rfwrite_cr_locked(chip, 0xf15d58);
+	if (r)
+		return r;
+
+	r = zd_iowrite16a_locked(chip, ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv, 2);
+	if (r)
+		return r;
+
+	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
+	if (r)
+		return r;
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int zd1211b_al7230b_set_channel(struct zd_rf *rf, u8 channel)
+{
+	int r;
+	const u32 *rv = chan_rv[channel-1];
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	r = zd_iowrite16_locked(chip, 0x57, ZD_CR240);
+	if (r)
+		return r;
+	r = zd_iowrite16_locked(chip, 0xe4, ZD_CR9);
+	if (r)
+		return r;
+
+	/* PLL_OFF */
+	r = zd_iowrite16_locked(chip, 0x2f, ZD_CR251);
+	if (r)
+		return r;
+	r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
+	if (r)
+		return r;
+
+	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
+	if (r)
+		return r;
+	r = zd_rfwrite_cr_locked(chip, 0xf15d58);
+	if (r)
+		return r;
+
+	r = zd_iowrite16a_locked(chip, ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv, 2);
+	if (r)
+		return r;
+
+	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
+	if (r)
+		return r;
+
+	r = zd_iowrite16_locked(chip, 0x7f, ZD_CR251);
+	if (r)
+		return r;
+
+	return zd1211b_al7230b_finalize(chip);
+}
+
+static int zd1211_al7230b_switch_radio_on(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR11,  0x00 },
+		{ ZD_CR251, 0x3f },
+	};
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int zd1211b_al7230b_switch_radio_on(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR11,  0x00 },
+		{ ZD_CR251, 0x7f },
+	};
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int al7230b_switch_radio_off(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR11,  0x04 },
+		{ ZD_CR251, 0x2f },
+	};
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+/* ZD1211B+AL7230B 6m band edge patching differs slightly from other
+ * configurations */
+static int zd1211b_al7230b_patch_6m(struct zd_rf *rf, u8 channel)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR128, 0x14 }, { ZD_CR129, 0x12 },
+	};
+
+	/* FIXME: Channel 11 is not the edge for all regulatory domains. */
+	if (channel == 1) {
+		ioreqs[0].value = 0x0e;
+		ioreqs[1].value = 0x10;
+	} else if (channel == 11) {
+		ioreqs[0].value = 0x10;
+		ioreqs[1].value = 0x10;
+	}
+
+	dev_dbg_f(zd_chip_dev(chip), "patching for channel %d\n", channel);
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+int zd_rf_init_al7230b(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	if (zd_chip_is_zd1211b(chip)) {
+		rf->init_hw = zd1211b_al7230b_init_hw;
+		rf->switch_radio_on = zd1211b_al7230b_switch_radio_on;
+		rf->set_channel = zd1211b_al7230b_set_channel;
+		rf->patch_6m_band_edge = zd1211b_al7230b_patch_6m;
+	} else {
+		rf->init_hw = zd1211_al7230b_init_hw;
+		rf->switch_radio_on = zd1211_al7230b_switch_radio_on;
+		rf->set_channel = zd1211_al7230b_set_channel;
+		rf->patch_6m_band_edge = zd_rf_generic_patch_6m;
+		rf->patch_cck_gain = 1;
+	}
+
+	rf->switch_radio_off = al7230b_switch_radio_off;
+
+	return 0;
+}
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_rf_rf2959.c b/drivers/net/wireless/zydas/zd1211rw/zd_rf_rf2959.c
new file mode 100644
index 000000000..e4c1a8a52
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_rf_rf2959.c
@@ -0,0 +1,269 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#include <linux/kernel.h>
+
+#include "zd_rf.h"
+#include "zd_usb.h"
+#include "zd_chip.h"
+
+static const u32 rf2959_table[][2] = {
+	RF_CHANNEL( 1) = { 0x181979, 0x1e6666 },
+	RF_CHANNEL( 2) = { 0x181989, 0x1e6666 },
+	RF_CHANNEL( 3) = { 0x181999, 0x1e6666 },
+	RF_CHANNEL( 4) = { 0x1819a9, 0x1e6666 },
+	RF_CHANNEL( 5) = { 0x1819b9, 0x1e6666 },
+	RF_CHANNEL( 6) = { 0x1819c9, 0x1e6666 },
+	RF_CHANNEL( 7) = { 0x1819d9, 0x1e6666 },
+	RF_CHANNEL( 8) = { 0x1819e9, 0x1e6666 },
+	RF_CHANNEL( 9) = { 0x1819f9, 0x1e6666 },
+	RF_CHANNEL(10) = { 0x181a09, 0x1e6666 },
+	RF_CHANNEL(11) = { 0x181a19, 0x1e6666 },
+	RF_CHANNEL(12) = { 0x181a29, 0x1e6666 },
+	RF_CHANNEL(13) = { 0x181a39, 0x1e6666 },
+	RF_CHANNEL(14) = { 0x181a60, 0x1c0000 },
+};
+
+#if 0
+static int bits(u32 rw, int from, int to)
+{
+	rw &= ~(0xffffffffU << (to+1));
+	rw >>= from;
+	return rw;
+}
+
+static int bit(u32 rw, int bit)
+{
+	return bits(rw, bit, bit);
+}
+
+static void dump_regwrite(u32 rw)
+{
+	int reg = bits(rw, 18, 22);
+	int rw_flag = bits(rw, 23, 23);
+	PDEBUG("rf2959 %#010x reg %d rw %d", rw, reg, rw_flag);
+
+	switch (reg) {
+	case 0:
+		PDEBUG("reg0 CFG1 ref_sel %d hibernate %d rf_vco_reg_en %d"
+		       " if_vco_reg_en %d if_vga_en %d",
+		       bits(rw, 14, 15), bit(rw, 3), bit(rw, 2), bit(rw, 1),
+		       bit(rw, 0));
+		break;
+	case 1:
+		PDEBUG("reg1 IFPLL1 pll_en1 %d kv_en1 %d vtc_en1 %d lpf1 %d"
+		       " cpl1 %d pdp1 %d autocal_en1 %d ld_en1 %d ifloopr %d"
+		       " ifloopc %d dac1 %d",
+		       bit(rw, 17), bit(rw, 16), bit(rw, 15), bit(rw, 14),
+		       bit(rw, 13), bit(rw, 12), bit(rw, 11), bit(rw, 10),
+		       bits(rw, 7, 9), bits(rw, 4, 6), bits(rw, 0, 3));
+		break;
+	case 2:
+		PDEBUG("reg2 IFPLL2 n1 %d num1 %d",
+		       bits(rw, 6, 17), bits(rw, 0, 5));
+		break;
+	case 3:
+		PDEBUG("reg3 IFPLL3 num %d", bits(rw, 0, 17));
+		break;
+	case 4:
+		PDEBUG("reg4 IFPLL4 dn1 %#04x ct_def1 %d kv_def1 %d",
+		       bits(rw, 8, 16), bits(rw, 4, 7), bits(rw, 0, 3));
+		break;
+	case 5:
+		PDEBUG("reg5 RFPLL1 pll_en %d kv_en %d vtc_en %d lpf %d cpl %d"
+		       " pdp %d autocal_en %d ld_en %d rfloopr %d rfloopc %d"
+		       " dac %d",
+		       bit(rw, 17), bit(rw, 16), bit(rw, 15), bit(rw, 14),
+		       bit(rw, 13), bit(rw, 12), bit(rw, 11), bit(rw, 10),
+		       bits(rw, 7, 9), bits(rw, 4, 6), bits(rw, 0,3));
+		break;
+	case 6:
+		PDEBUG("reg6 RFPLL2 n %d num %d",
+		       bits(rw, 6, 17), bits(rw, 0, 5));
+		break;
+	case 7:
+		PDEBUG("reg7 RFPLL3 num2 %d", bits(rw, 0, 17));
+		break;
+	case 8:
+		PDEBUG("reg8 RFPLL4 dn %#06x ct_def %d kv_def %d",
+		       bits(rw, 8, 16), bits(rw, 4, 7), bits(rw, 0, 3));
+		break;
+	case 9:
+		PDEBUG("reg9 CAL1 tvco %d tlock %d m_ct_value %d ld_window %d",
+		       bits(rw, 13, 17), bits(rw, 8, 12), bits(rw, 3, 7),
+		       bits(rw, 0, 2));
+		break;
+	case 10:
+		PDEBUG("reg10 TXRX1 rxdcfbbyps %d pcontrol %d txvgc %d"
+		       " rxlpfbw %d txlpfbw %d txdiffmode %d txenmode %d"
+		       " intbiasen %d tybypass %d",
+		       bit(rw, 17), bits(rw, 15, 16), bits(rw, 10, 14),
+		       bits(rw, 7, 9), bits(rw, 4, 6), bit(rw, 3), bit(rw, 2),
+		       bit(rw, 1), bit(rw, 0));
+		break;
+	case 11:
+		PDEBUG("reg11 PCNT1 mid_bias %d p_desired %d pc_offset %d"
+			" tx_delay %d",
+			bits(rw, 15, 17), bits(rw, 9, 14), bits(rw, 3, 8),
+			bits(rw, 0, 2));
+		break;
+	case 12:
+		PDEBUG("reg12 PCNT2 max_power %d mid_power %d min_power %d",
+		       bits(rw, 12, 17), bits(rw, 6, 11), bits(rw, 0, 5));
+		break;
+	case 13:
+		PDEBUG("reg13 VCOT1 rfpll vco comp %d ifpll vco comp %d"
+		       " lobias %d if_biasbuf %d if_biasvco %d rf_biasbuf %d"
+		       " rf_biasvco %d",
+		       bit(rw, 17), bit(rw, 16), bit(rw, 15),
+		       bits(rw, 8, 9), bits(rw, 5, 7), bits(rw, 3, 4),
+		       bits(rw, 0, 2));
+		break;
+	case 14:
+		PDEBUG("reg14 IQCAL rx_acal %d rx_pcal %d"
+		       " tx_acal %d tx_pcal %d",
+		       bits(rw, 13, 17), bits(rw, 9, 12), bits(rw, 4, 8),
+		       bits(rw, 0, 3));
+		break;
+	}
+}
+#endif /* 0 */
+
+static int rf2959_init_hw(struct zd_rf *rf)
+{
+	int r;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR2,   0x1E }, { ZD_CR9,   0x20 }, { ZD_CR10,  0x89 },
+		{ ZD_CR11,  0x00 }, { ZD_CR15,  0xD0 }, { ZD_CR17,  0x68 },
+		{ ZD_CR19,  0x4a }, { ZD_CR20,  0x0c }, { ZD_CR21,  0x0E },
+		{ ZD_CR23,  0x48 },
+		/* normal size for cca threshold */
+		{ ZD_CR24,  0x14 },
+		/* { ZD_CR24,  0x20 }, */
+		{ ZD_CR26,  0x90 }, { ZD_CR27,  0x30 }, { ZD_CR29,  0x20 },
+		{ ZD_CR31,  0xb2 }, { ZD_CR32,  0x43 }, { ZD_CR33,  0x28 },
+		{ ZD_CR38,  0x30 }, { ZD_CR34,  0x0f }, { ZD_CR35,  0xF0 },
+		{ ZD_CR41,  0x2a }, { ZD_CR46,  0x7F }, { ZD_CR47,  0x1E },
+		{ ZD_CR51,  0xc5 }, { ZD_CR52,  0xc5 }, { ZD_CR53,  0xc5 },
+		{ ZD_CR79,  0x58 }, { ZD_CR80,  0x30 }, { ZD_CR81,  0x30 },
+		{ ZD_CR82,  0x00 }, { ZD_CR83,  0x24 }, { ZD_CR84,  0x04 },
+		{ ZD_CR85,  0x00 }, { ZD_CR86,  0x10 }, { ZD_CR87,  0x2A },
+		{ ZD_CR88,  0x10 }, { ZD_CR89,  0x24 }, { ZD_CR90,  0x18 },
+		/* { ZD_CR91,  0x18 }, */
+		/* should solve continuous CTS frame problems */
+		{ ZD_CR91,  0x00 },
+		{ ZD_CR92,  0x0a }, { ZD_CR93,  0x00 }, { ZD_CR94,  0x01 },
+		{ ZD_CR95,  0x00 }, { ZD_CR96,  0x40 }, { ZD_CR97,  0x37 },
+		{ ZD_CR98,  0x05 }, { ZD_CR99,  0x28 }, { ZD_CR100, 0x00 },
+		{ ZD_CR101, 0x13 }, { ZD_CR102, 0x27 }, { ZD_CR103, 0x27 },
+		{ ZD_CR104, 0x18 }, { ZD_CR105, 0x12 },
+		/* normal size */
+		{ ZD_CR106, 0x1a },
+		/* { ZD_CR106, 0x22 }, */
+		{ ZD_CR107, 0x24 }, { ZD_CR108, 0x0a }, { ZD_CR109, 0x13 },
+		{ ZD_CR110, 0x2F }, { ZD_CR111, 0x27 }, { ZD_CR112, 0x27 },
+		{ ZD_CR113, 0x27 }, { ZD_CR114, 0x27 }, { ZD_CR115, 0x40 },
+		{ ZD_CR116, 0x40 }, { ZD_CR117, 0xF0 }, { ZD_CR118, 0xF0 },
+		{ ZD_CR119, 0x16 },
+		/* no TX continuation */
+		{ ZD_CR122, 0x00 },
+		/* { ZD_CR122, 0xff }, */
+		{ ZD_CR127, 0x03 }, { ZD_CR131, 0x08 }, { ZD_CR138, 0x28 },
+		{ ZD_CR148, 0x44 }, { ZD_CR150, 0x10 }, { ZD_CR169, 0xBB },
+		{ ZD_CR170, 0xBB },
+	};
+
+	static const u32 rv[] = {
+		0x000007,  /* REG0(CFG1) */
+		0x07dd43,  /* REG1(IFPLL1) */
+		0x080959,  /* REG2(IFPLL2) */
+		0x0e6666,
+		0x116a57,  /* REG4 */
+		0x17dd43,  /* REG5 */
+		0x1819f9,  /* REG6 */
+		0x1e6666,
+		0x214554,
+		0x25e7fa,
+		0x27fffa,
+		/* The Zydas driver somehow forgets to set this value. It's
+		 * only set for Japan. We are using internal power control
+		 * for now.
+		 */
+		0x294128, /* internal power */
+		/* 0x28252c, */ /* External control TX power */
+		/* ZD_CR31_CCK, ZD_CR51_6-36M, ZD_CR52_48M, ZD_CR53_54M */
+		0x2c0000,
+		0x300000,
+		0x340000,  /* REG13(0xD) */
+		0x381e0f,  /* REG14(0xE) */
+		/* Bogus, RF2959's data sheet doesn't know register 27, which is
+		 * actually referenced here. The commented 0x11 is 17.
+		 */
+		0x6c180f,  /* REG27(0x11) */
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	if (r)
+		return r;
+
+	return zd_rfwritev_locked(chip, rv, ARRAY_SIZE(rv), RF_RV_BITS);
+}
+
+static int rf2959_set_channel(struct zd_rf *rf, u8 channel)
+{
+	int i, r;
+	const u32 *rv = rf2959_table[channel-1];
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	for (i = 0; i < 2; i++) {
+		r = zd_rfwrite_locked(chip, rv[i], RF_RV_BITS);
+		if (r)
+			return r;
+	}
+	return 0;
+}
+
+static int rf2959_switch_radio_on(struct zd_rf *rf)
+{
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR10, 0x89 },
+		{ ZD_CR11, 0x00 },
+	};
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int rf2959_switch_radio_off(struct zd_rf *rf)
+{
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR10, 0x15 },
+		{ ZD_CR11, 0x81 },
+	};
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+int zd_rf_init_rf2959(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	if (zd_chip_is_zd1211b(chip)) {
+		dev_err(zd_chip_dev(chip),
+		       "RF2959 is currently not supported for ZD1211B"
+		       " devices\n");
+		return -ENODEV;
+	}
+	rf->init_hw = rf2959_init_hw;
+	rf->set_channel = rf2959_set_channel;
+	rf->switch_radio_on = rf2959_switch_radio_on;
+	rf->switch_radio_off = rf2959_switch_radio_off;
+	return 0;
+}
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_rf_uw2453.c b/drivers/net/wireless/zydas/zd1211rw/zd_rf_uw2453.c
new file mode 100644
index 000000000..a4e7f187d
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_rf_uw2453.c
@@ -0,0 +1,527 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include "zd_rf.h"
+#include "zd_usb.h"
+#include "zd_chip.h"
+
+/* This RF programming code is based upon the code found in v2.16.0.0 of the
+ * ZyDAS vendor driver. Unlike other RF's, Ubec publish full technical specs
+ * for this RF on their website, so we're able to understand more than
+ * usual as to what is going on. Thumbs up for Ubec for doing that. */
+
+/* The 3-wire serial interface provides access to 8 write-only registers.
+ * The data format is a 4 bit register address followed by a 20 bit value. */
+#define UW2453_REGWRITE(reg, val) ((((reg) & 0xf) << 20) | ((val) & 0xfffff))
+
+/* For channel tuning, we have to configure registers 1 (synthesizer), 2 (synth
+ * fractional divide ratio) and 3 (VCO config).
+ *
+ * We configure the RF to produce an interrupt when the PLL is locked onto
+ * the configured frequency. During initialization, we run through a variety
+ * of different VCO configurations on channel 1 until we detect a PLL lock.
+ * When this happens, we remember which VCO configuration produced the lock
+ * and use it later. Actually, we use the configuration *after* the one that
+ * produced the lock, which seems odd, but it works.
+ *
+ * If we do not see a PLL lock on any standard VCO config, we fall back on an
+ * autocal configuration, which has a fixed (as opposed to per-channel) VCO
+ * config and different synth values from the standard set (divide ratio
+ * is still shared with the standard set). */
+
+/* The per-channel synth values for all standard VCO configurations. These get
+ * written to register 1. */
+static const u8 uw2453_std_synth[] = {
+	RF_CHANNEL( 1) = 0x47,
+	RF_CHANNEL( 2) = 0x47,
+	RF_CHANNEL( 3) = 0x67,
+	RF_CHANNEL( 4) = 0x67,
+	RF_CHANNEL( 5) = 0x67,
+	RF_CHANNEL( 6) = 0x67,
+	RF_CHANNEL( 7) = 0x57,
+	RF_CHANNEL( 8) = 0x57,
+	RF_CHANNEL( 9) = 0x57,
+	RF_CHANNEL(10) = 0x57,
+	RF_CHANNEL(11) = 0x77,
+	RF_CHANNEL(12) = 0x77,
+	RF_CHANNEL(13) = 0x77,
+	RF_CHANNEL(14) = 0x4f,
+};
+
+/* This table stores the synthesizer fractional divide ratio for *all* VCO
+ * configurations (both standard and autocal). These get written to register 2.
+ */
+static const u16 uw2453_synth_divide[] = {
+	RF_CHANNEL( 1) = 0x999,
+	RF_CHANNEL( 2) = 0x99b,
+	RF_CHANNEL( 3) = 0x998,
+	RF_CHANNEL( 4) = 0x99a,
+	RF_CHANNEL( 5) = 0x999,
+	RF_CHANNEL( 6) = 0x99b,
+	RF_CHANNEL( 7) = 0x998,
+	RF_CHANNEL( 8) = 0x99a,
+	RF_CHANNEL( 9) = 0x999,
+	RF_CHANNEL(10) = 0x99b,
+	RF_CHANNEL(11) = 0x998,
+	RF_CHANNEL(12) = 0x99a,
+	RF_CHANNEL(13) = 0x999,
+	RF_CHANNEL(14) = 0xccc,
+};
+
+/* Here is the data for all the standard VCO configurations. We shrink our
+ * table a little by observing that both channels in a consecutive pair share
+ * the same value. We also observe that the high 4 bits ([0:3] in the specs)
+ * are all 'Reserved' and are always set to 0x4 - we chop them off in the data
+ * below. */
+#define CHAN_TO_PAIRIDX(a) ((a - 1) / 2)
+#define RF_CHANPAIR(a,b) [CHAN_TO_PAIRIDX(a)]
+static const u16 uw2453_std_vco_cfg[][7] = {
+	{ /* table 1 */
+		RF_CHANPAIR( 1,  2) = 0x664d,
+		RF_CHANPAIR( 3,  4) = 0x604d,
+		RF_CHANPAIR( 5,  6) = 0x6675,
+		RF_CHANPAIR( 7,  8) = 0x6475,
+		RF_CHANPAIR( 9, 10) = 0x6655,
+		RF_CHANPAIR(11, 12) = 0x6455,
+		RF_CHANPAIR(13, 14) = 0x6665,
+	},
+	{ /* table 2 */
+		RF_CHANPAIR( 1,  2) = 0x666d,
+		RF_CHANPAIR( 3,  4) = 0x606d,
+		RF_CHANPAIR( 5,  6) = 0x664d,
+		RF_CHANPAIR( 7,  8) = 0x644d,
+		RF_CHANPAIR( 9, 10) = 0x6675,
+		RF_CHANPAIR(11, 12) = 0x6475,
+		RF_CHANPAIR(13, 14) = 0x6655,
+	},
+	{ /* table 3 */
+		RF_CHANPAIR( 1,  2) = 0x665d,
+		RF_CHANPAIR( 3,  4) = 0x605d,
+		RF_CHANPAIR( 5,  6) = 0x666d,
+		RF_CHANPAIR( 7,  8) = 0x646d,
+		RF_CHANPAIR( 9, 10) = 0x664d,
+		RF_CHANPAIR(11, 12) = 0x644d,
+		RF_CHANPAIR(13, 14) = 0x6675,
+	},
+	{ /* table 4 */
+		RF_CHANPAIR( 1,  2) = 0x667d,
+		RF_CHANPAIR( 3,  4) = 0x607d,
+		RF_CHANPAIR( 5,  6) = 0x665d,
+		RF_CHANPAIR( 7,  8) = 0x645d,
+		RF_CHANPAIR( 9, 10) = 0x666d,
+		RF_CHANPAIR(11, 12) = 0x646d,
+		RF_CHANPAIR(13, 14) = 0x664d,
+	},
+	{ /* table 5 */
+		RF_CHANPAIR( 1,  2) = 0x6643,
+		RF_CHANPAIR( 3,  4) = 0x6043,
+		RF_CHANPAIR( 5,  6) = 0x667d,
+		RF_CHANPAIR( 7,  8) = 0x647d,
+		RF_CHANPAIR( 9, 10) = 0x665d,
+		RF_CHANPAIR(11, 12) = 0x645d,
+		RF_CHANPAIR(13, 14) = 0x666d,
+	},
+	{ /* table 6 */
+		RF_CHANPAIR( 1,  2) = 0x6663,
+		RF_CHANPAIR( 3,  4) = 0x6063,
+		RF_CHANPAIR( 5,  6) = 0x6643,
+		RF_CHANPAIR( 7,  8) = 0x6443,
+		RF_CHANPAIR( 9, 10) = 0x667d,
+		RF_CHANPAIR(11, 12) = 0x647d,
+		RF_CHANPAIR(13, 14) = 0x665d,
+	},
+	{ /* table 7 */
+		RF_CHANPAIR( 1,  2) = 0x6653,
+		RF_CHANPAIR( 3,  4) = 0x6053,
+		RF_CHANPAIR( 5,  6) = 0x6663,
+		RF_CHANPAIR( 7,  8) = 0x6463,
+		RF_CHANPAIR( 9, 10) = 0x6643,
+		RF_CHANPAIR(11, 12) = 0x6443,
+		RF_CHANPAIR(13, 14) = 0x667d,
+	},
+	{ /* table 8 */
+		RF_CHANPAIR( 1,  2) = 0x6673,
+		RF_CHANPAIR( 3,  4) = 0x6073,
+		RF_CHANPAIR( 5,  6) = 0x6653,
+		RF_CHANPAIR( 7,  8) = 0x6453,
+		RF_CHANPAIR( 9, 10) = 0x6663,
+		RF_CHANPAIR(11, 12) = 0x6463,
+		RF_CHANPAIR(13, 14) = 0x6643,
+	},
+	{ /* table 9 */
+		RF_CHANPAIR( 1,  2) = 0x664b,
+		RF_CHANPAIR( 3,  4) = 0x604b,
+		RF_CHANPAIR( 5,  6) = 0x6673,
+		RF_CHANPAIR( 7,  8) = 0x6473,
+		RF_CHANPAIR( 9, 10) = 0x6653,
+		RF_CHANPAIR(11, 12) = 0x6453,
+		RF_CHANPAIR(13, 14) = 0x6663,
+	},
+	{ /* table 10 */
+		RF_CHANPAIR( 1,  2) = 0x666b,
+		RF_CHANPAIR( 3,  4) = 0x606b,
+		RF_CHANPAIR( 5,  6) = 0x664b,
+		RF_CHANPAIR( 7,  8) = 0x644b,
+		RF_CHANPAIR( 9, 10) = 0x6673,
+		RF_CHANPAIR(11, 12) = 0x6473,
+		RF_CHANPAIR(13, 14) = 0x6653,
+	},
+	{ /* table 11 */
+		RF_CHANPAIR( 1,  2) = 0x665b,
+		RF_CHANPAIR( 3,  4) = 0x605b,
+		RF_CHANPAIR( 5,  6) = 0x666b,
+		RF_CHANPAIR( 7,  8) = 0x646b,
+		RF_CHANPAIR( 9, 10) = 0x664b,
+		RF_CHANPAIR(11, 12) = 0x644b,
+		RF_CHANPAIR(13, 14) = 0x6673,
+	},
+
+};
+
+/* The per-channel synth values for autocal. These get written to register 1. */
+static const u16 uw2453_autocal_synth[] = {
+	RF_CHANNEL( 1) = 0x6847,
+	RF_CHANNEL( 2) = 0x6847,
+	RF_CHANNEL( 3) = 0x6867,
+	RF_CHANNEL( 4) = 0x6867,
+	RF_CHANNEL( 5) = 0x6867,
+	RF_CHANNEL( 6) = 0x6867,
+	RF_CHANNEL( 7) = 0x6857,
+	RF_CHANNEL( 8) = 0x6857,
+	RF_CHANNEL( 9) = 0x6857,
+	RF_CHANNEL(10) = 0x6857,
+	RF_CHANNEL(11) = 0x6877,
+	RF_CHANNEL(12) = 0x6877,
+	RF_CHANNEL(13) = 0x6877,
+	RF_CHANNEL(14) = 0x684f,
+};
+
+/* The VCO configuration for autocal (all channels) */
+static const u16 UW2453_AUTOCAL_VCO_CFG = 0x6662;
+
+/* TX gain settings. The array index corresponds to the TX power integration
+ * values found in the EEPROM. The values get written to register 7. */
+static u32 uw2453_txgain[] = {
+	[0x00] = 0x0e313,
+	[0x01] = 0x0fb13,
+	[0x02] = 0x0e093,
+	[0x03] = 0x0f893,
+	[0x04] = 0x0ea93,
+	[0x05] = 0x1f093,
+	[0x06] = 0x1f493,
+	[0x07] = 0x1f693,
+	[0x08] = 0x1f393,
+	[0x09] = 0x1f35b,
+	[0x0a] = 0x1e6db,
+	[0x0b] = 0x1ff3f,
+	[0x0c] = 0x1ffff,
+	[0x0d] = 0x361d7,
+	[0x0e] = 0x37fbf,
+	[0x0f] = 0x3ff8b,
+	[0x10] = 0x3ff33,
+	[0x11] = 0x3fb3f,
+	[0x12] = 0x3ffff,
+};
+
+/* RF-specific structure */
+struct uw2453_priv {
+	/* index into synth/VCO config tables where PLL lock was found
+	 * -1 means autocal */
+	int config;
+};
+
+#define UW2453_PRIV(rf) ((struct uw2453_priv *) (rf)->priv)
+
+static int uw2453_synth_set_channel(struct zd_chip *chip, int channel,
+	bool autocal)
+{
+	int r;
+	int idx = channel - 1;
+	u32 val;
+
+	if (autocal)
+		val = UW2453_REGWRITE(1, uw2453_autocal_synth[idx]);
+	else
+		val = UW2453_REGWRITE(1, uw2453_std_synth[idx]);
+
+	r = zd_rfwrite_locked(chip, val, RF_RV_BITS);
+	if (r)
+		return r;
+
+	return zd_rfwrite_locked(chip,
+		UW2453_REGWRITE(2, uw2453_synth_divide[idx]), RF_RV_BITS);
+}
+
+static int uw2453_write_vco_cfg(struct zd_chip *chip, u16 value)
+{
+	/* vendor driver always sets these upper bits even though the specs say
+	 * they are reserved */
+	u32 val = 0x40000 | value;
+	return zd_rfwrite_locked(chip, UW2453_REGWRITE(3, val), RF_RV_BITS);
+}
+
+static int uw2453_init_mode(struct zd_chip *chip)
+{
+	static const u32 rv[] = {
+		UW2453_REGWRITE(0, 0x25f98), /* enter IDLE mode */
+		UW2453_REGWRITE(0, 0x25f9a), /* enter CAL_VCO mode */
+		UW2453_REGWRITE(0, 0x25f94), /* enter RX/TX mode */
+		UW2453_REGWRITE(0, 0x27fd4), /* power down RSSI circuit */
+	};
+
+	return zd_rfwritev_locked(chip, rv, ARRAY_SIZE(rv), RF_RV_BITS);
+}
+
+static int uw2453_set_tx_gain_level(struct zd_chip *chip, int channel)
+{
+	u8 int_value = chip->pwr_int_values[channel - 1];
+
+	if (int_value >= ARRAY_SIZE(uw2453_txgain)) {
+		dev_dbg_f(zd_chip_dev(chip), "can't configure TX gain for "
+			  "int value %x on channel %d\n", int_value, channel);
+		return 0;
+	}
+
+	return zd_rfwrite_locked(chip,
+		UW2453_REGWRITE(7, uw2453_txgain[int_value]), RF_RV_BITS);
+}
+
+static int uw2453_init_hw(struct zd_rf *rf)
+{
+	int i, r;
+	int found_config = -1;
+	u16 intr_status;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR10,  0x89 }, { ZD_CR15,  0x20 },
+		{ ZD_CR17,  0x28 }, /* 6112 no change */
+		{ ZD_CR23,  0x38 }, { ZD_CR24,  0x20 }, { ZD_CR26,  0x93 },
+		{ ZD_CR27,  0x15 }, { ZD_CR28,  0x3e }, { ZD_CR29,  0x00 },
+		{ ZD_CR33,  0x28 }, { ZD_CR34,  0x30 },
+		{ ZD_CR35,  0x43 }, /* 6112 3e->43 */
+		{ ZD_CR41,  0x24 }, { ZD_CR44,  0x32 },
+		{ ZD_CR46,  0x92 }, /* 6112 96->92 */
+		{ ZD_CR47,  0x1e },
+		{ ZD_CR48,  0x04 }, /* 5602 Roger */
+		{ ZD_CR49,  0xfa }, { ZD_CR79,  0x58 }, { ZD_CR80,  0x30 },
+		{ ZD_CR81,  0x30 }, { ZD_CR87,  0x0a }, { ZD_CR89,  0x04 },
+		{ ZD_CR91,  0x00 }, { ZD_CR92,  0x0a }, { ZD_CR98,  0x8d },
+		{ ZD_CR99,  0x28 }, { ZD_CR100, 0x02 },
+		{ ZD_CR101, 0x09 }, /* 6112 13->1f 6220 1f->13 6407 13->9 */
+		{ ZD_CR102, 0x27 },
+		{ ZD_CR106, 0x1c }, /* 5d07 5112 1f->1c 6220 1c->1f
+				     * 6221 1f->1c
+				     */
+		{ ZD_CR107, 0x1c }, /* 6220 1c->1a 5221 1a->1c */
+		{ ZD_CR109, 0x13 },
+		{ ZD_CR110, 0x1f }, /* 6112 13->1f 6221 1f->13 6407 13->0x09 */
+		{ ZD_CR111, 0x13 }, { ZD_CR112, 0x1f }, { ZD_CR113, 0x27 },
+		{ ZD_CR114, 0x23 }, /* 6221 27->23 */
+		{ ZD_CR115, 0x24 }, /* 6112 24->1c 6220 1c->24 */
+		{ ZD_CR116, 0x24 }, /* 6220 1c->24 */
+		{ ZD_CR117, 0xfa }, /* 6112 fa->f8 6220 f8->f4 6220 f4->fa */
+		{ ZD_CR118, 0xf0 }, /* 5d07 6112 f0->f2 6220 f2->f0 */
+		{ ZD_CR119, 0x1a }, /* 6112 1a->10 6220 10->14 6220 14->1a */
+		{ ZD_CR120, 0x4f },
+		{ ZD_CR121, 0x1f }, /* 6220 4f->1f */
+		{ ZD_CR122, 0xf0 }, { ZD_CR123, 0x57 }, { ZD_CR125, 0xad },
+		{ ZD_CR126, 0x6c }, { ZD_CR127, 0x03 },
+		{ ZD_CR128, 0x14 }, /* 6302 12->11 */
+		{ ZD_CR129, 0x12 }, /* 6301 10->0f */
+		{ ZD_CR130, 0x10 }, { ZD_CR137, 0x50 }, { ZD_CR138, 0xa8 },
+		{ ZD_CR144, 0xac }, { ZD_CR146, 0x20 }, { ZD_CR252, 0xff },
+		{ ZD_CR253, 0xff },
+	};
+
+	static const u32 rv[] = {
+		UW2453_REGWRITE(4, 0x2b),    /* configure receiver gain */
+		UW2453_REGWRITE(5, 0x19e4f), /* configure transmitter gain */
+		UW2453_REGWRITE(6, 0xf81ad), /* enable RX/TX filter tuning */
+		UW2453_REGWRITE(7, 0x3fffe), /* disable TX gain in test mode */
+
+		/* enter CAL_FIL mode, TX gain set by registers, RX gain set by pins,
+		 * RSSI circuit powered down, reduced RSSI range */
+		UW2453_REGWRITE(0, 0x25f9c), /* 5d01 cal_fil */
+
+		/* synthesizer configuration for channel 1 */
+		UW2453_REGWRITE(1, 0x47),
+		UW2453_REGWRITE(2, 0x999),
+
+		/* disable manual VCO band selection */
+		UW2453_REGWRITE(3, 0x7602),
+
+		/* enable manual VCO band selection, configure current level */
+		UW2453_REGWRITE(3, 0x46063),
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_locked(chip, rv, ARRAY_SIZE(rv), RF_RV_BITS);
+	if (r)
+		return r;
+
+	r = uw2453_init_mode(chip);
+	if (r)
+		return r;
+
+	/* Try all standard VCO configuration settings on channel 1 */
+	for (i = 0; i < ARRAY_SIZE(uw2453_std_vco_cfg) - 1; i++) {
+		/* Configure synthesizer for channel 1 */
+		r = uw2453_synth_set_channel(chip, 1, false);
+		if (r)
+			return r;
+
+		/* Write VCO config */
+		r = uw2453_write_vco_cfg(chip, uw2453_std_vco_cfg[i][0]);
+		if (r)
+			return r;
+
+		/* ack interrupt event */
+		r = zd_iowrite16_locked(chip, 0x0f, UW2453_INTR_REG);
+		if (r)
+			return r;
+
+		/* check interrupt status */
+		r = zd_ioread16_locked(chip, &intr_status, UW2453_INTR_REG);
+		if (r)
+			return r;
+
+		if (!(intr_status & 0xf)) {
+			dev_dbg_f(zd_chip_dev(chip),
+				"PLL locked on configuration %d\n", i);
+			found_config = i;
+			break;
+		}
+	}
+
+	if (found_config == -1) {
+		/* autocal */
+		dev_dbg_f(zd_chip_dev(chip),
+			"PLL did not lock, using autocal\n");
+
+		r = uw2453_synth_set_channel(chip, 1, true);
+		if (r)
+			return r;
+
+		r = uw2453_write_vco_cfg(chip, UW2453_AUTOCAL_VCO_CFG);
+		if (r)
+			return r;
+	}
+
+	/* To match the vendor driver behaviour, we use the configuration after
+	 * the one that produced a lock. */
+	UW2453_PRIV(rf)->config = found_config + 1;
+
+	return zd_iowrite16_locked(chip, 0x06, ZD_CR203);
+}
+
+static int uw2453_set_channel(struct zd_rf *rf, u8 channel)
+{
+	int r;
+	u16 vco_cfg;
+	int config = UW2453_PRIV(rf)->config;
+	bool autocal = (config == -1);
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR80,  0x30 }, { ZD_CR81,  0x30 }, { ZD_CR79,  0x58 },
+		{ ZD_CR12,  0xf0 }, { ZD_CR77,  0x1b }, { ZD_CR78,  0x58 },
+	};
+
+	r = uw2453_synth_set_channel(chip, channel, autocal);
+	if (r)
+		return r;
+
+	if (autocal)
+		vco_cfg = UW2453_AUTOCAL_VCO_CFG;
+	else
+		vco_cfg = uw2453_std_vco_cfg[config][CHAN_TO_PAIRIDX(channel)];
+
+	r = uw2453_write_vco_cfg(chip, vco_cfg);
+	if (r)
+		return r;
+
+	r = uw2453_init_mode(chip);
+	if (r)
+		return r;
+
+	r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	if (r)
+		return r;
+
+	r = uw2453_set_tx_gain_level(chip, channel);
+	if (r)
+		return r;
+
+	return zd_iowrite16_locked(chip, 0x06, ZD_CR203);
+}
+
+static int uw2453_switch_radio_on(struct zd_rf *rf)
+{
+	int r;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR11,  0x00 }, { ZD_CR251, 0x3f },
+	};
+
+	/* enter RXTX mode */
+	r = zd_rfwrite_locked(chip, UW2453_REGWRITE(0, 0x25f94), RF_RV_BITS);
+	if (r)
+		return r;
+
+	if (zd_chip_is_zd1211b(chip))
+		ioreqs[1].value = 0x7f;
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int uw2453_switch_radio_off(struct zd_rf *rf)
+{
+	int r;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ ZD_CR11,  0x04 }, { ZD_CR251, 0x2f },
+	};
+
+	/* enter IDLE mode */
+	/* FIXME: shouldn't we go to SLEEP? sent email to zydas */
+	r = zd_rfwrite_locked(chip, UW2453_REGWRITE(0, 0x25f90), RF_RV_BITS);
+	if (r)
+		return r;
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static void uw2453_clear(struct zd_rf *rf)
+{
+	kfree(rf->priv);
+}
+
+int zd_rf_init_uw2453(struct zd_rf *rf)
+{
+	rf->init_hw = uw2453_init_hw;
+	rf->set_channel = uw2453_set_channel;
+	rf->switch_radio_on = uw2453_switch_radio_on;
+	rf->switch_radio_off = uw2453_switch_radio_off;
+	rf->patch_6m_band_edge = zd_rf_generic_patch_6m;
+	rf->clear = uw2453_clear;
+	/* we have our own TX integration code */
+	rf->update_channel_int = 0;
+
+	rf->priv = kmalloc(sizeof(struct uw2453_priv), GFP_KERNEL);
+	if (rf->priv == NULL)
+		return -ENOMEM;
+
+	return 0;
+}
+
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_usb.c b/drivers/net/wireless/zydas/zd1211rw/zd_usb.c
new file mode 100644
index 000000000..850c26bc9
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_usb.c
@@ -0,0 +1,2030 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ * Copyright (C) 2006-2007 Michael Wu <flamingice@sourmilk.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/firmware.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/usb.h>
+#include <linux/workqueue.h>
+#include <linux/module.h>
+#include <net/mac80211.h>
+#include <asm/unaligned.h>
+
+#include "zd_def.h"
+#include "zd_mac.h"
+#include "zd_usb.h"
+
+static const struct usb_device_id usb_ids[] = {
+	/* ZD1211 */
+	{ USB_DEVICE(0x0105, 0x145f), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0586, 0x3401), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0586, 0x3402), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0586, 0x3407), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0586, 0x3409), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x079b, 0x004a), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x07b8, 0x6001), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0ace, 0x1211), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0ace, 0xa211), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0b05, 0x170c), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0b3b, 0x1630), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0b3b, 0x5630), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0df6, 0x9071), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x0df6, 0x9075), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x126f, 0xa006), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x129b, 0x1666), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x13b1, 0x001e), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x1435, 0x0711), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x14ea, 0xab10), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x14ea, 0xab13), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x157e, 0x300a), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x157e, 0x300b), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x157e, 0x3204), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x157e, 0x3207), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x1740, 0x2000), .driver_info = DEVICE_ZD1211 },
+	{ USB_DEVICE(0x6891, 0xa727), .driver_info = DEVICE_ZD1211 },
+	/* ZD1211B */
+	{ USB_DEVICE(0x0053, 0x5301), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0409, 0x0248), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0411, 0x00da), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0471, 0x1236), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0471, 0x1237), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x050d, 0x705c), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x054c, 0x0257), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0586, 0x340a), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0586, 0x340f), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0586, 0x3410), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0586, 0x3412), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0586, 0x3413), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x079b, 0x0062), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x07fa, 0x1196), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x083a, 0x4505), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x083a, 0xe501), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x083a, 0xe503), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x083a, 0xe506), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0ace, 0x1215), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0ace, 0xb215), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0b05, 0x171b), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0baf, 0x0121), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0cde, 0x001a), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x0df6, 0x0036), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x129b, 0x1667), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x13b1, 0x0024), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x157e, 0x300d), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x1582, 0x6003), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x2019, 0x5303), .driver_info = DEVICE_ZD1211B },
+	{ USB_DEVICE(0x2019, 0xed01), .driver_info = DEVICE_ZD1211B },
+	/* "Driverless" devices that need ejecting */
+	{ USB_DEVICE(0x0ace, 0x2011), .driver_info = DEVICE_INSTALLER },
+	{ USB_DEVICE(0x0ace, 0x20ff), .driver_info = DEVICE_INSTALLER },
+	{}
+};
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("USB driver for devices with the ZD1211 chip.");
+MODULE_AUTHOR("Ulrich Kunitz");
+MODULE_AUTHOR("Daniel Drake");
+MODULE_VERSION("1.0");
+MODULE_DEVICE_TABLE(usb, usb_ids);
+
+#define FW_ZD1211_PREFIX	"zd1211/zd1211_"
+#define FW_ZD1211B_PREFIX	"zd1211/zd1211b_"
+
+static bool check_read_regs(struct zd_usb *usb, struct usb_req_read_regs *req,
+			    unsigned int count);
+
+/* USB device initialization */
+static void int_urb_complete(struct urb *urb);
+
+static int request_fw_file(
+	const struct firmware **fw, const char *name, struct device *device)
+{
+	int r;
+
+	dev_dbg_f(device, "fw name %s\n", name);
+
+	r = request_firmware(fw, name, device);
+	if (r)
+		dev_err(device,
+		       "Could not load firmware file %s. Error number %d\n",
+		       name, r);
+	return r;
+}
+
+static inline u16 get_bcdDevice(const struct usb_device *udev)
+{
+	return le16_to_cpu(udev->descriptor.bcdDevice);
+}
+
+enum upload_code_flags {
+	REBOOT = 1,
+};
+
+/* Ensures that MAX_TRANSFER_SIZE is even. */
+#define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
+
+static int upload_code(struct usb_device *udev,
+	const u8 *data, size_t size, u16 code_offset, int flags)
+{
+	u8 *p;
+	int r;
+
+	/* USB request blocks need "kmalloced" buffers.
+	 */
+	p = kmalloc(MAX_TRANSFER_SIZE, GFP_KERNEL);
+	if (!p) {
+		r = -ENOMEM;
+		goto error;
+	}
+
+	size &= ~1;
+	while (size > 0) {
+		size_t transfer_size = size <= MAX_TRANSFER_SIZE ?
+			size : MAX_TRANSFER_SIZE;
+
+		dev_dbg_f(&udev->dev, "transfer size %zu\n", transfer_size);
+
+		memcpy(p, data, transfer_size);
+		r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+			USB_REQ_FIRMWARE_DOWNLOAD,
+			USB_DIR_OUT | USB_TYPE_VENDOR,
+			code_offset, 0, p, transfer_size, 1000 /* ms */);
+		if (r < 0) {
+			dev_err(&udev->dev,
+			       "USB control request for firmware upload"
+			       " failed. Error number %d\n", r);
+			goto error;
+		}
+		transfer_size = r & ~1;
+
+		size -= transfer_size;
+		data += transfer_size;
+		code_offset += transfer_size/sizeof(u16);
+	}
+
+	if (flags & REBOOT) {
+		u8 ret;
+
+		/* Use "DMA-aware" buffer. */
+		r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+			USB_REQ_FIRMWARE_CONFIRM,
+			USB_DIR_IN | USB_TYPE_VENDOR,
+			0, 0, p, sizeof(ret), 5000 /* ms */);
+		if (r != sizeof(ret)) {
+			dev_err(&udev->dev,
+				"control request firmware confirmation failed."
+				" Return value %d\n", r);
+			if (r >= 0)
+				r = -ENODEV;
+			goto error;
+		}
+		ret = p[0];
+		if (ret & 0x80) {
+			dev_err(&udev->dev,
+				"Internal error while downloading."
+				" Firmware confirm return value %#04x\n",
+				(unsigned int)ret);
+			r = -ENODEV;
+			goto error;
+		}
+		dev_dbg_f(&udev->dev, "firmware confirm return value %#04x\n",
+			(unsigned int)ret);
+	}
+
+	r = 0;
+error:
+	kfree(p);
+	return r;
+}
+
+static u16 get_word(const void *data, u16 offset)
+{
+	const __le16 *p = data;
+	return le16_to_cpu(p[offset]);
+}
+
+static char *get_fw_name(struct zd_usb *usb, char *buffer, size_t size,
+	               const char* postfix)
+{
+	scnprintf(buffer, size, "%s%s",
+		usb->is_zd1211b ?
+			FW_ZD1211B_PREFIX : FW_ZD1211_PREFIX,
+		postfix);
+	return buffer;
+}
+
+static int handle_version_mismatch(struct zd_usb *usb,
+	const struct firmware *ub_fw)
+{
+	struct usb_device *udev = zd_usb_to_usbdev(usb);
+	const struct firmware *ur_fw = NULL;
+	int offset;
+	int r = 0;
+	char fw_name[128];
+
+	r = request_fw_file(&ur_fw,
+		get_fw_name(usb, fw_name, sizeof(fw_name), "ur"),
+		&udev->dev);
+	if (r)
+		goto error;
+
+	r = upload_code(udev, ur_fw->data, ur_fw->size, FW_START, REBOOT);
+	if (r)
+		goto error;
+
+	offset = (E2P_BOOT_CODE_OFFSET * sizeof(u16));
+	r = upload_code(udev, ub_fw->data + offset, ub_fw->size - offset,
+		E2P_START + E2P_BOOT_CODE_OFFSET, REBOOT);
+
+	/* At this point, the vendor driver downloads the whole firmware
+	 * image, hacks around with version IDs, and uploads it again,
+	 * completely overwriting the boot code. We do not do this here as
+	 * it is not required on any tested devices, and it is suspected to
+	 * cause problems. */
+error:
+	release_firmware(ur_fw);
+	return r;
+}
+
+static int upload_firmware(struct zd_usb *usb)
+{
+	int r;
+	u16 fw_bcdDevice;
+	u16 bcdDevice;
+	struct usb_device *udev = zd_usb_to_usbdev(usb);
+	const struct firmware *ub_fw = NULL;
+	const struct firmware *uph_fw = NULL;
+	char fw_name[128];
+
+	bcdDevice = get_bcdDevice(udev);
+
+	r = request_fw_file(&ub_fw,
+		get_fw_name(usb, fw_name, sizeof(fw_name), "ub"),
+		&udev->dev);
+	if (r)
+		goto error;
+
+	fw_bcdDevice = get_word(ub_fw->data, E2P_DATA_OFFSET);
+
+	if (fw_bcdDevice != bcdDevice) {
+		dev_info(&udev->dev,
+			"firmware version %#06x and device bootcode version "
+			"%#06x differ\n", fw_bcdDevice, bcdDevice);
+		if (bcdDevice <= 0x4313)
+			dev_warn(&udev->dev, "device has old bootcode, please "
+				"report success or failure\n");
+
+		r = handle_version_mismatch(usb, ub_fw);
+		if (r)
+			goto error;
+	} else {
+		dev_dbg_f(&udev->dev,
+			"firmware device id %#06x is equal to the "
+			"actual device id\n", fw_bcdDevice);
+	}
+
+
+	r = request_fw_file(&uph_fw,
+		get_fw_name(usb, fw_name, sizeof(fw_name), "uphr"),
+		&udev->dev);
+	if (r)
+		goto error;
+
+	r = upload_code(udev, uph_fw->data, uph_fw->size, FW_START, REBOOT);
+	if (r) {
+		dev_err(&udev->dev,
+			"Could not upload firmware code uph. Error number %d\n",
+			r);
+	}
+
+	/* FALL-THROUGH */
+error:
+	release_firmware(ub_fw);
+	release_firmware(uph_fw);
+	return r;
+}
+
+MODULE_FIRMWARE(FW_ZD1211B_PREFIX "ur");
+MODULE_FIRMWARE(FW_ZD1211_PREFIX "ur");
+MODULE_FIRMWARE(FW_ZD1211B_PREFIX "ub");
+MODULE_FIRMWARE(FW_ZD1211_PREFIX "ub");
+MODULE_FIRMWARE(FW_ZD1211B_PREFIX "uphr");
+MODULE_FIRMWARE(FW_ZD1211_PREFIX "uphr");
+
+/* Read data from device address space using "firmware interface" which does
+ * not require firmware to be loaded. */
+int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len)
+{
+	int r;
+	struct usb_device *udev = zd_usb_to_usbdev(usb);
+	u8 *buf;
+
+	/* Use "DMA-aware" buffer. */
+	buf = kmalloc(len, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+		USB_REQ_FIRMWARE_READ_DATA, USB_DIR_IN | 0x40, addr, 0,
+		buf, len, 5000);
+	if (r < 0) {
+		dev_err(&udev->dev,
+			"read over firmware interface failed: %d\n", r);
+		goto exit;
+	} else if (r != len) {
+		dev_err(&udev->dev,
+			"incomplete read over firmware interface: %d/%d\n",
+			r, len);
+		r = -EIO;
+		goto exit;
+	}
+	r = 0;
+	memcpy(data, buf, len);
+exit:
+	kfree(buf);
+	return r;
+}
+
+#define urb_dev(urb) (&(urb)->dev->dev)
+
+static inline void handle_regs_int_override(struct urb *urb)
+{
+	struct zd_usb *usb = urb->context;
+	struct zd_usb_interrupt *intr = &usb->intr;
+	unsigned long flags;
+
+	spin_lock_irqsave(&intr->lock, flags);
+	if (atomic_read(&intr->read_regs_enabled)) {
+		atomic_set(&intr->read_regs_enabled, 0);
+		intr->read_regs_int_overridden = 1;
+		complete(&intr->read_regs.completion);
+	}
+	spin_unlock_irqrestore(&intr->lock, flags);
+}
+
+static inline void handle_regs_int(struct urb *urb)
+{
+	struct zd_usb *usb = urb->context;
+	struct zd_usb_interrupt *intr = &usb->intr;
+	unsigned long flags;
+	int len;
+	u16 int_num;
+
+	spin_lock_irqsave(&intr->lock, flags);
+
+	int_num = le16_to_cpu(*(__le16 *)(urb->transfer_buffer+2));
+	if (int_num == CR_INTERRUPT) {
+		struct zd_mac *mac = zd_hw_mac(zd_usb_to_hw(urb->context));
+		spin_lock(&mac->lock);
+		memcpy(&mac->intr_buffer, urb->transfer_buffer,
+				USB_MAX_EP_INT_BUFFER);
+		spin_unlock(&mac->lock);
+		schedule_work(&mac->process_intr);
+	} else if (atomic_read(&intr->read_regs_enabled)) {
+		len = urb->actual_length;
+		intr->read_regs.length = urb->actual_length;
+		if (len > sizeof(intr->read_regs.buffer))
+			len = sizeof(intr->read_regs.buffer);
+
+		memcpy(intr->read_regs.buffer, urb->transfer_buffer, len);
+
+		/* Sometimes USB_INT_ID_REGS is not overridden, but comes after
+		 * USB_INT_ID_RETRY_FAILED. Read-reg retry then gets this
+		 * delayed USB_INT_ID_REGS, but leaves USB_INT_ID_REGS of
+		 * retry unhandled. Next read-reg command then might catch
+		 * this wrong USB_INT_ID_REGS. Fix by ignoring wrong reads.
+		 */
+		if (!check_read_regs(usb, intr->read_regs.req,
+						intr->read_regs.req_count))
+			goto out;
+
+		atomic_set(&intr->read_regs_enabled, 0);
+		intr->read_regs_int_overridden = 0;
+		complete(&intr->read_regs.completion);
+
+		goto out;
+	}
+
+out:
+	spin_unlock_irqrestore(&intr->lock, flags);
+
+	/* CR_INTERRUPT might override read_reg too. */
+	if (int_num == CR_INTERRUPT && atomic_read(&intr->read_regs_enabled))
+		handle_regs_int_override(urb);
+}
+
+static void int_urb_complete(struct urb *urb)
+{
+	int r;
+	struct usb_int_header *hdr;
+	struct zd_usb *usb;
+	struct zd_usb_interrupt *intr;
+
+	switch (urb->status) {
+	case 0:
+		break;
+	case -ESHUTDOWN:
+	case -EINVAL:
+	case -ENODEV:
+	case -ENOENT:
+	case -ECONNRESET:
+	case -EPIPE:
+		dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+		return;
+	default:
+		dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+		goto resubmit;
+	}
+
+	if (urb->actual_length < sizeof(hdr)) {
+		dev_dbg_f(urb_dev(urb), "error: urb %p to small\n", urb);
+		goto resubmit;
+	}
+
+	hdr = urb->transfer_buffer;
+	if (hdr->type != USB_INT_TYPE) {
+		dev_dbg_f(urb_dev(urb), "error: urb %p wrong type\n", urb);
+		goto resubmit;
+	}
+
+	/* USB_INT_ID_RETRY_FAILED triggered by tx-urb submit can override
+	 * pending USB_INT_ID_REGS causing read command timeout.
+	 */
+	usb = urb->context;
+	intr = &usb->intr;
+	if (hdr->id != USB_INT_ID_REGS && atomic_read(&intr->read_regs_enabled))
+		handle_regs_int_override(urb);
+
+	switch (hdr->id) {
+	case USB_INT_ID_REGS:
+		handle_regs_int(urb);
+		break;
+	case USB_INT_ID_RETRY_FAILED:
+		zd_mac_tx_failed(urb);
+		break;
+	default:
+		dev_dbg_f(urb_dev(urb), "error: urb %p unknown id %x\n", urb,
+			(unsigned int)hdr->id);
+		goto resubmit;
+	}
+
+resubmit:
+	r = usb_submit_urb(urb, GFP_ATOMIC);
+	if (r) {
+		dev_dbg_f(urb_dev(urb), "error: resubmit urb %p err code %d\n",
+			  urb, r);
+		/* TODO: add worker to reset intr->urb */
+	}
+	return;
+}
+
+static inline int int_urb_interval(struct usb_device *udev)
+{
+	switch (udev->speed) {
+	case USB_SPEED_HIGH:
+		return 4;
+	case USB_SPEED_LOW:
+		return 10;
+	case USB_SPEED_FULL:
+	default:
+		return 1;
+	}
+}
+
+static inline int usb_int_enabled(struct zd_usb *usb)
+{
+	unsigned long flags;
+	struct zd_usb_interrupt *intr = &usb->intr;
+	struct urb *urb;
+
+	spin_lock_irqsave(&intr->lock, flags);
+	urb = intr->urb;
+	spin_unlock_irqrestore(&intr->lock, flags);
+	return urb != NULL;
+}
+
+int zd_usb_enable_int(struct zd_usb *usb)
+{
+	int r;
+	struct usb_device *udev = zd_usb_to_usbdev(usb);
+	struct zd_usb_interrupt *intr = &usb->intr;
+	struct urb *urb;
+
+	dev_dbg_f(zd_usb_dev(usb), "\n");
+
+	urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!urb) {
+		r = -ENOMEM;
+		goto out;
+	}
+
+	ZD_ASSERT(!irqs_disabled());
+	spin_lock_irq(&intr->lock);
+	if (intr->urb) {
+		spin_unlock_irq(&intr->lock);
+		r = 0;
+		goto error_free_urb;
+	}
+	intr->urb = urb;
+	spin_unlock_irq(&intr->lock);
+
+	r = -ENOMEM;
+	intr->buffer = usb_alloc_coherent(udev, USB_MAX_EP_INT_BUFFER,
+					  GFP_KERNEL, &intr->buffer_dma);
+	if (!intr->buffer) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"couldn't allocate transfer_buffer\n");
+		goto error_set_urb_null;
+	}
+
+	usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, EP_INT_IN),
+			 intr->buffer, USB_MAX_EP_INT_BUFFER,
+			 int_urb_complete, usb,
+			 intr->interval);
+	urb->transfer_dma = intr->buffer_dma;
+	urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	dev_dbg_f(zd_usb_dev(usb), "submit urb %p\n", intr->urb);
+	r = usb_submit_urb(urb, GFP_KERNEL);
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb),
+			 "Couldn't submit urb. Error number %d\n", r);
+		goto error;
+	}
+
+	return 0;
+error:
+	usb_free_coherent(udev, USB_MAX_EP_INT_BUFFER,
+			  intr->buffer, intr->buffer_dma);
+error_set_urb_null:
+	spin_lock_irq(&intr->lock);
+	intr->urb = NULL;
+	spin_unlock_irq(&intr->lock);
+error_free_urb:
+	usb_free_urb(urb);
+out:
+	return r;
+}
+
+void zd_usb_disable_int(struct zd_usb *usb)
+{
+	unsigned long flags;
+	struct usb_device *udev = zd_usb_to_usbdev(usb);
+	struct zd_usb_interrupt *intr = &usb->intr;
+	struct urb *urb;
+	void *buffer;
+	dma_addr_t buffer_dma;
+
+	spin_lock_irqsave(&intr->lock, flags);
+	urb = intr->urb;
+	if (!urb) {
+		spin_unlock_irqrestore(&intr->lock, flags);
+		return;
+	}
+	intr->urb = NULL;
+	buffer = intr->buffer;
+	buffer_dma = intr->buffer_dma;
+	intr->buffer = NULL;
+	spin_unlock_irqrestore(&intr->lock, flags);
+
+	usb_kill_urb(urb);
+	dev_dbg_f(zd_usb_dev(usb), "urb %p killed\n", urb);
+	usb_free_urb(urb);
+
+	usb_free_coherent(udev, USB_MAX_EP_INT_BUFFER, buffer, buffer_dma);
+}
+
+static void handle_rx_packet(struct zd_usb *usb, const u8 *buffer,
+			     unsigned int length)
+{
+	int i;
+	const struct rx_length_info *length_info;
+
+	if (length < sizeof(struct rx_length_info)) {
+		/* It's not a complete packet anyhow. */
+		dev_dbg_f(zd_usb_dev(usb), "invalid, small RX packet : %d\n",
+					   length);
+		return;
+	}
+	length_info = (struct rx_length_info *)
+		(buffer + length - sizeof(struct rx_length_info));
+
+	/* It might be that three frames are merged into a single URB
+	 * transaction. We have to check for the length info tag.
+	 *
+	 * While testing we discovered that length_info might be unaligned,
+	 * because if USB transactions are merged, the last packet will not
+	 * be padded. Unaligned access might also happen if the length_info
+	 * structure is not present.
+	 */
+	if (get_unaligned_le16(&length_info->tag) == RX_LENGTH_INFO_TAG)
+	{
+		unsigned int l, k, n;
+		for (i = 0, l = 0;; i++) {
+			k = get_unaligned_le16(&length_info->length[i]);
+			if (k == 0)
+				return;
+			n = l+k;
+			if (n > length)
+				return;
+			zd_mac_rx(zd_usb_to_hw(usb), buffer+l, k);
+			if (i >= 2)
+				return;
+			l = (n+3) & ~3;
+		}
+	} else {
+		zd_mac_rx(zd_usb_to_hw(usb), buffer, length);
+	}
+}
+
+static void rx_urb_complete(struct urb *urb)
+{
+	int r;
+	struct zd_usb *usb;
+	struct zd_usb_rx *rx;
+	const u8 *buffer;
+	unsigned int length;
+	unsigned long flags;
+
+	switch (urb->status) {
+	case 0:
+		break;
+	case -ESHUTDOWN:
+	case -EINVAL:
+	case -ENODEV:
+	case -ENOENT:
+	case -ECONNRESET:
+	case -EPIPE:
+		dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+		return;
+	default:
+		dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+		goto resubmit;
+	}
+
+	buffer = urb->transfer_buffer;
+	length = urb->actual_length;
+	usb = urb->context;
+	rx = &usb->rx;
+
+	tasklet_schedule(&rx->reset_timer_tasklet);
+
+	if (length%rx->usb_packet_size > rx->usb_packet_size-4) {
+		/* If there is an old first fragment, we don't care. */
+		dev_dbg_f(urb_dev(urb), "*** first fragment ***\n");
+		ZD_ASSERT(length <= ARRAY_SIZE(rx->fragment));
+		spin_lock_irqsave(&rx->lock, flags);
+		memcpy(rx->fragment, buffer, length);
+		rx->fragment_length = length;
+		spin_unlock_irqrestore(&rx->lock, flags);
+		goto resubmit;
+	}
+
+	spin_lock_irqsave(&rx->lock, flags);
+	if (rx->fragment_length > 0) {
+		/* We are on a second fragment, we believe */
+		ZD_ASSERT(length + rx->fragment_length <=
+			  ARRAY_SIZE(rx->fragment));
+		dev_dbg_f(urb_dev(urb), "*** second fragment ***\n");
+		memcpy(rx->fragment+rx->fragment_length, buffer, length);
+		handle_rx_packet(usb, rx->fragment,
+			         rx->fragment_length + length);
+		rx->fragment_length = 0;
+		spin_unlock_irqrestore(&rx->lock, flags);
+	} else {
+		spin_unlock_irqrestore(&rx->lock, flags);
+		handle_rx_packet(usb, buffer, length);
+	}
+
+resubmit:
+	r = usb_submit_urb(urb, GFP_ATOMIC);
+	if (r)
+		dev_dbg_f(urb_dev(urb), "urb %p resubmit error %d\n", urb, r);
+}
+
+static struct urb *alloc_rx_urb(struct zd_usb *usb)
+{
+	struct usb_device *udev = zd_usb_to_usbdev(usb);
+	struct urb *urb;
+	void *buffer;
+
+	urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!urb)
+		return NULL;
+	buffer = usb_alloc_coherent(udev, USB_MAX_RX_SIZE, GFP_KERNEL,
+				    &urb->transfer_dma);
+	if (!buffer) {
+		usb_free_urb(urb);
+		return NULL;
+	}
+
+	usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, EP_DATA_IN),
+			  buffer, USB_MAX_RX_SIZE,
+			  rx_urb_complete, usb);
+	urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	return urb;
+}
+
+static void free_rx_urb(struct urb *urb)
+{
+	if (!urb)
+		return;
+	usb_free_coherent(urb->dev, urb->transfer_buffer_length,
+			  urb->transfer_buffer, urb->transfer_dma);
+	usb_free_urb(urb);
+}
+
+static int __zd_usb_enable_rx(struct zd_usb *usb)
+{
+	int i, r;
+	struct zd_usb_rx *rx = &usb->rx;
+	struct urb **urbs;
+
+	dev_dbg_f(zd_usb_dev(usb), "\n");
+
+	r = -ENOMEM;
+	urbs = kcalloc(RX_URBS_COUNT, sizeof(struct urb *), GFP_KERNEL);
+	if (!urbs)
+		goto error;
+	for (i = 0; i < RX_URBS_COUNT; i++) {
+		urbs[i] = alloc_rx_urb(usb);
+		if (!urbs[i])
+			goto error;
+	}
+
+	ZD_ASSERT(!irqs_disabled());
+	spin_lock_irq(&rx->lock);
+	if (rx->urbs) {
+		spin_unlock_irq(&rx->lock);
+		r = 0;
+		goto error;
+	}
+	rx->urbs = urbs;
+	rx->urbs_count = RX_URBS_COUNT;
+	spin_unlock_irq(&rx->lock);
+
+	for (i = 0; i < RX_URBS_COUNT; i++) {
+		r = usb_submit_urb(urbs[i], GFP_KERNEL);
+		if (r)
+			goto error_submit;
+	}
+
+	return 0;
+error_submit:
+	for (i = 0; i < RX_URBS_COUNT; i++) {
+		usb_kill_urb(urbs[i]);
+	}
+	spin_lock_irq(&rx->lock);
+	rx->urbs = NULL;
+	rx->urbs_count = 0;
+	spin_unlock_irq(&rx->lock);
+error:
+	if (urbs) {
+		for (i = 0; i < RX_URBS_COUNT; i++)
+			free_rx_urb(urbs[i]);
+	}
+	return r;
+}
+
+int zd_usb_enable_rx(struct zd_usb *usb)
+{
+	int r;
+	struct zd_usb_rx *rx = &usb->rx;
+
+	mutex_lock(&rx->setup_mutex);
+	r = __zd_usb_enable_rx(usb);
+	mutex_unlock(&rx->setup_mutex);
+
+	zd_usb_reset_rx_idle_timer(usb);
+
+	return r;
+}
+
+static void __zd_usb_disable_rx(struct zd_usb *usb)
+{
+	int i;
+	unsigned long flags;
+	struct urb **urbs;
+	unsigned int count;
+	struct zd_usb_rx *rx = &usb->rx;
+
+	spin_lock_irqsave(&rx->lock, flags);
+	urbs = rx->urbs;
+	count = rx->urbs_count;
+	spin_unlock_irqrestore(&rx->lock, flags);
+	if (!urbs)
+		return;
+
+	for (i = 0; i < count; i++) {
+		usb_kill_urb(urbs[i]);
+		free_rx_urb(urbs[i]);
+	}
+	kfree(urbs);
+
+	spin_lock_irqsave(&rx->lock, flags);
+	rx->urbs = NULL;
+	rx->urbs_count = 0;
+	spin_unlock_irqrestore(&rx->lock, flags);
+}
+
+void zd_usb_disable_rx(struct zd_usb *usb)
+{
+	struct zd_usb_rx *rx = &usb->rx;
+
+	mutex_lock(&rx->setup_mutex);
+	__zd_usb_disable_rx(usb);
+	mutex_unlock(&rx->setup_mutex);
+
+	tasklet_kill(&rx->reset_timer_tasklet);
+	cancel_delayed_work_sync(&rx->idle_work);
+}
+
+static void zd_usb_reset_rx(struct zd_usb *usb)
+{
+	bool do_reset;
+	struct zd_usb_rx *rx = &usb->rx;
+	unsigned long flags;
+
+	mutex_lock(&rx->setup_mutex);
+
+	spin_lock_irqsave(&rx->lock, flags);
+	do_reset = rx->urbs != NULL;
+	spin_unlock_irqrestore(&rx->lock, flags);
+
+	if (do_reset) {
+		__zd_usb_disable_rx(usb);
+		__zd_usb_enable_rx(usb);
+	}
+
+	mutex_unlock(&rx->setup_mutex);
+
+	if (do_reset)
+		zd_usb_reset_rx_idle_timer(usb);
+}
+
+/**
+ * zd_usb_disable_tx - disable transmission
+ * @usb: the zd1211rw-private USB structure
+ *
+ * Frees all URBs in the free list and marks the transmission as disabled.
+ */
+void zd_usb_disable_tx(struct zd_usb *usb)
+{
+	struct zd_usb_tx *tx = &usb->tx;
+	unsigned long flags;
+
+	atomic_set(&tx->enabled, 0);
+
+	/* kill all submitted tx-urbs */
+	usb_kill_anchored_urbs(&tx->submitted);
+
+	spin_lock_irqsave(&tx->lock, flags);
+	WARN_ON(!skb_queue_empty(&tx->submitted_skbs));
+	WARN_ON(tx->submitted_urbs != 0);
+	tx->submitted_urbs = 0;
+	spin_unlock_irqrestore(&tx->lock, flags);
+
+	/* The stopped state is ignored, relying on ieee80211_wake_queues()
+	 * in a potentionally following zd_usb_enable_tx().
+	 */
+}
+
+/**
+ * zd_usb_enable_tx - enables transmission
+ * @usb: a &struct zd_usb pointer
+ *
+ * This function enables transmission and prepares the &zd_usb_tx data
+ * structure.
+ */
+void zd_usb_enable_tx(struct zd_usb *usb)
+{
+	unsigned long flags;
+	struct zd_usb_tx *tx = &usb->tx;
+
+	spin_lock_irqsave(&tx->lock, flags);
+	atomic_set(&tx->enabled, 1);
+	tx->submitted_urbs = 0;
+	ieee80211_wake_queues(zd_usb_to_hw(usb));
+	tx->stopped = 0;
+	spin_unlock_irqrestore(&tx->lock, flags);
+}
+
+static void tx_dec_submitted_urbs(struct zd_usb *usb)
+{
+	struct zd_usb_tx *tx = &usb->tx;
+	unsigned long flags;
+
+	spin_lock_irqsave(&tx->lock, flags);
+	--tx->submitted_urbs;
+	if (tx->stopped && tx->submitted_urbs <= ZD_USB_TX_LOW) {
+		ieee80211_wake_queues(zd_usb_to_hw(usb));
+		tx->stopped = 0;
+	}
+	spin_unlock_irqrestore(&tx->lock, flags);
+}
+
+static void tx_inc_submitted_urbs(struct zd_usb *usb)
+{
+	struct zd_usb_tx *tx = &usb->tx;
+	unsigned long flags;
+
+	spin_lock_irqsave(&tx->lock, flags);
+	++tx->submitted_urbs;
+	if (!tx->stopped && tx->submitted_urbs > ZD_USB_TX_HIGH) {
+		ieee80211_stop_queues(zd_usb_to_hw(usb));
+		tx->stopped = 1;
+	}
+	spin_unlock_irqrestore(&tx->lock, flags);
+}
+
+/**
+ * tx_urb_complete - completes the execution of an URB
+ * @urb: a URB
+ *
+ * This function is called if the URB has been transferred to a device or an
+ * error has happened.
+ */
+static void tx_urb_complete(struct urb *urb)
+{
+	int r;
+	struct sk_buff *skb;
+	struct ieee80211_tx_info *info;
+	struct zd_usb *usb;
+	struct zd_usb_tx *tx;
+
+	skb = (struct sk_buff *)urb->context;
+	info = IEEE80211_SKB_CB(skb);
+	/*
+	 * grab 'usb' pointer before handing off the skb (since
+	 * it might be freed by zd_mac_tx_to_dev or mac80211)
+	 */
+	usb = &zd_hw_mac(info->rate_driver_data[0])->chip.usb;
+	tx = &usb->tx;
+
+	switch (urb->status) {
+	case 0:
+		break;
+	case -ESHUTDOWN:
+	case -EINVAL:
+	case -ENODEV:
+	case -ENOENT:
+	case -ECONNRESET:
+	case -EPIPE:
+		dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+		break;
+	default:
+		dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+		goto resubmit;
+	}
+free_urb:
+	skb_unlink(skb, &usb->tx.submitted_skbs);
+	zd_mac_tx_to_dev(skb, urb->status);
+	usb_free_urb(urb);
+	tx_dec_submitted_urbs(usb);
+	return;
+resubmit:
+	usb_anchor_urb(urb, &tx->submitted);
+	r = usb_submit_urb(urb, GFP_ATOMIC);
+	if (r) {
+		usb_unanchor_urb(urb);
+		dev_dbg_f(urb_dev(urb), "error resubmit urb %p %d\n", urb, r);
+		goto free_urb;
+	}
+}
+
+/**
+ * zd_usb_tx: initiates transfer of a frame of the device
+ *
+ * @usb: the zd1211rw-private USB structure
+ * @skb: a &struct sk_buff pointer
+ *
+ * This function tranmits a frame to the device. It doesn't wait for
+ * completion. The frame must contain the control set and have all the
+ * control set information available.
+ *
+ * The function returns 0 if the transfer has been successfully initiated.
+ */
+int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb)
+{
+	int r;
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct usb_device *udev = zd_usb_to_usbdev(usb);
+	struct urb *urb;
+	struct zd_usb_tx *tx = &usb->tx;
+
+	if (!atomic_read(&tx->enabled)) {
+		r = -ENOENT;
+		goto out;
+	}
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		r = -ENOMEM;
+		goto out;
+	}
+
+	usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, EP_DATA_OUT),
+		          skb->data, skb->len, tx_urb_complete, skb);
+
+	info->rate_driver_data[1] = (void *)jiffies;
+	skb_queue_tail(&tx->submitted_skbs, skb);
+	usb_anchor_urb(urb, &tx->submitted);
+
+	r = usb_submit_urb(urb, GFP_ATOMIC);
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb), "error submit urb %p %d\n", urb, r);
+		usb_unanchor_urb(urb);
+		skb_unlink(skb, &tx->submitted_skbs);
+		goto error;
+	}
+	tx_inc_submitted_urbs(usb);
+	return 0;
+error:
+	usb_free_urb(urb);
+out:
+	return r;
+}
+
+static bool zd_tx_timeout(struct zd_usb *usb)
+{
+	struct zd_usb_tx *tx = &usb->tx;
+	struct sk_buff_head *q = &tx->submitted_skbs;
+	struct sk_buff *skb, *skbnext;
+	struct ieee80211_tx_info *info;
+	unsigned long flags, trans_start;
+	bool have_timedout = false;
+
+	spin_lock_irqsave(&q->lock, flags);
+	skb_queue_walk_safe(q, skb, skbnext) {
+		info = IEEE80211_SKB_CB(skb);
+		trans_start = (unsigned long)info->rate_driver_data[1];
+
+		if (time_is_before_jiffies(trans_start + ZD_TX_TIMEOUT)) {
+			have_timedout = true;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&q->lock, flags);
+
+	return have_timedout;
+}
+
+static void zd_tx_watchdog_handler(struct work_struct *work)
+{
+	struct zd_usb *usb =
+		container_of(work, struct zd_usb, tx.watchdog_work.work);
+	struct zd_usb_tx *tx = &usb->tx;
+
+	if (!atomic_read(&tx->enabled) || !tx->watchdog_enabled)
+		goto out;
+	if (!zd_tx_timeout(usb))
+		goto out;
+
+	/* TX halted, try reset */
+	dev_warn(zd_usb_dev(usb), "TX-stall detected, resetting device...");
+
+	usb_queue_reset_device(usb->intf);
+
+	/* reset will stop this worker, don't rearm */
+	return;
+out:
+	queue_delayed_work(zd_workqueue, &tx->watchdog_work,
+			   ZD_TX_WATCHDOG_INTERVAL);
+}
+
+void zd_tx_watchdog_enable(struct zd_usb *usb)
+{
+	struct zd_usb_tx *tx = &usb->tx;
+
+	if (!tx->watchdog_enabled) {
+		dev_dbg_f(zd_usb_dev(usb), "\n");
+		queue_delayed_work(zd_workqueue, &tx->watchdog_work,
+				   ZD_TX_WATCHDOG_INTERVAL);
+		tx->watchdog_enabled = 1;
+	}
+}
+
+void zd_tx_watchdog_disable(struct zd_usb *usb)
+{
+	struct zd_usb_tx *tx = &usb->tx;
+
+	if (tx->watchdog_enabled) {
+		dev_dbg_f(zd_usb_dev(usb), "\n");
+		tx->watchdog_enabled = 0;
+		cancel_delayed_work_sync(&tx->watchdog_work);
+	}
+}
+
+static void zd_rx_idle_timer_handler(struct work_struct *work)
+{
+	struct zd_usb *usb =
+		container_of(work, struct zd_usb, rx.idle_work.work);
+	struct zd_mac *mac = zd_usb_to_mac(usb);
+
+	if (!test_bit(ZD_DEVICE_RUNNING, &mac->flags))
+		return;
+
+	dev_dbg_f(zd_usb_dev(usb), "\n");
+
+	/* 30 seconds since last rx, reset rx */
+	zd_usb_reset_rx(usb);
+}
+
+static void zd_usb_reset_rx_idle_timer_tasklet(struct tasklet_struct *t)
+{
+	struct zd_usb *usb = from_tasklet(usb, t, rx.reset_timer_tasklet);
+
+	zd_usb_reset_rx_idle_timer(usb);
+}
+
+void zd_usb_reset_rx_idle_timer(struct zd_usb *usb)
+{
+	struct zd_usb_rx *rx = &usb->rx;
+
+	mod_delayed_work(zd_workqueue, &rx->idle_work, ZD_RX_IDLE_INTERVAL);
+}
+
+static inline void init_usb_interrupt(struct zd_usb *usb)
+{
+	struct zd_usb_interrupt *intr = &usb->intr;
+
+	spin_lock_init(&intr->lock);
+	intr->interval = int_urb_interval(zd_usb_to_usbdev(usb));
+	init_completion(&intr->read_regs.completion);
+	atomic_set(&intr->read_regs_enabled, 0);
+	intr->read_regs.cr_int_addr = cpu_to_le16((u16)CR_INTERRUPT);
+}
+
+static inline void init_usb_rx(struct zd_usb *usb)
+{
+	struct zd_usb_rx *rx = &usb->rx;
+
+	spin_lock_init(&rx->lock);
+	mutex_init(&rx->setup_mutex);
+	if (interface_to_usbdev(usb->intf)->speed == USB_SPEED_HIGH) {
+		rx->usb_packet_size = 512;
+	} else {
+		rx->usb_packet_size = 64;
+	}
+	ZD_ASSERT(rx->fragment_length == 0);
+	INIT_DELAYED_WORK(&rx->idle_work, zd_rx_idle_timer_handler);
+	rx->reset_timer_tasklet.func = (void (*))
+					zd_usb_reset_rx_idle_timer_tasklet;
+	rx->reset_timer_tasklet.data = (unsigned long)&rx->reset_timer_tasklet;
+}
+
+static inline void init_usb_tx(struct zd_usb *usb)
+{
+	struct zd_usb_tx *tx = &usb->tx;
+
+	spin_lock_init(&tx->lock);
+	atomic_set(&tx->enabled, 0);
+	tx->stopped = 0;
+	skb_queue_head_init(&tx->submitted_skbs);
+	init_usb_anchor(&tx->submitted);
+	tx->submitted_urbs = 0;
+	tx->watchdog_enabled = 0;
+	INIT_DELAYED_WORK(&tx->watchdog_work, zd_tx_watchdog_handler);
+}
+
+void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw,
+	         struct usb_interface *intf)
+{
+	memset(usb, 0, sizeof(*usb));
+	usb->intf = usb_get_intf(intf);
+	usb_set_intfdata(usb->intf, hw);
+	init_usb_anchor(&usb->submitted_cmds);
+	init_usb_interrupt(usb);
+	init_usb_tx(usb);
+	init_usb_rx(usb);
+}
+
+void zd_usb_clear(struct zd_usb *usb)
+{
+	usb_set_intfdata(usb->intf, NULL);
+	usb_put_intf(usb->intf);
+	ZD_MEMCLEAR(usb, sizeof(*usb));
+	/* FIXME: usb_interrupt, usb_tx, usb_rx? */
+}
+
+static const char *speed(enum usb_device_speed speed)
+{
+	switch (speed) {
+	case USB_SPEED_LOW:
+		return "low";
+	case USB_SPEED_FULL:
+		return "full";
+	case USB_SPEED_HIGH:
+		return "high";
+	default:
+		return "unknown speed";
+	}
+}
+
+static int scnprint_id(struct usb_device *udev, char *buffer, size_t size)
+{
+	return scnprintf(buffer, size, "%04hx:%04hx v%04hx %s",
+		le16_to_cpu(udev->descriptor.idVendor),
+		le16_to_cpu(udev->descriptor.idProduct),
+		get_bcdDevice(udev),
+		speed(udev->speed));
+}
+
+int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size)
+{
+	struct usb_device *udev = interface_to_usbdev(usb->intf);
+	return scnprint_id(udev, buffer, size);
+}
+
+#ifdef DEBUG
+static void print_id(struct usb_device *udev)
+{
+	char buffer[40];
+
+	scnprint_id(udev, buffer, sizeof(buffer));
+	buffer[sizeof(buffer)-1] = 0;
+	dev_dbg_f(&udev->dev, "%s\n", buffer);
+}
+#else
+#define print_id(udev) do { } while (0)
+#endif
+
+static int eject_installer(struct usb_interface *intf)
+{
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct usb_host_interface *iface_desc = intf->cur_altsetting;
+	struct usb_endpoint_descriptor *endpoint;
+	unsigned char *cmd;
+	u8 bulk_out_ep;
+	int r;
+
+	if (iface_desc->desc.bNumEndpoints < 2)
+		return -ENODEV;
+
+	/* Find bulk out endpoint */
+	for (r = 1; r >= 0; r--) {
+		endpoint = &iface_desc->endpoint[r].desc;
+		if (usb_endpoint_dir_out(endpoint) &&
+		    usb_endpoint_xfer_bulk(endpoint)) {
+			bulk_out_ep = endpoint->bEndpointAddress;
+			break;
+		}
+	}
+	if (r == -1) {
+		dev_err(&udev->dev,
+			"zd1211rw: Could not find bulk out endpoint\n");
+		return -ENODEV;
+	}
+
+	cmd = kzalloc(31, GFP_KERNEL);
+	if (cmd == NULL)
+		return -ENODEV;
+
+	/* USB bulk command block */
+	cmd[0] = 0x55;	/* bulk command signature */
+	cmd[1] = 0x53;	/* bulk command signature */
+	cmd[2] = 0x42;	/* bulk command signature */
+	cmd[3] = 0x43;	/* bulk command signature */
+	cmd[14] = 6;	/* command length */
+
+	cmd[15] = 0x1b;	/* SCSI command: START STOP UNIT */
+	cmd[19] = 0x2;	/* eject disc */
+
+	dev_info(&udev->dev, "Ejecting virtual installer media...\n");
+	r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
+		cmd, 31, NULL, 2000);
+	kfree(cmd);
+	if (r)
+		return r;
+
+	/* At this point, the device disconnects and reconnects with the real
+	 * ID numbers. */
+
+	usb_set_intfdata(intf, NULL);
+	return 0;
+}
+
+int zd_usb_init_hw(struct zd_usb *usb)
+{
+	int r;
+	struct zd_mac *mac = zd_usb_to_mac(usb);
+
+	dev_dbg_f(zd_usb_dev(usb), "\n");
+
+	r = upload_firmware(usb);
+	if (r) {
+		dev_err(zd_usb_dev(usb),
+		       "couldn't load firmware. Error number %d\n", r);
+		return r;
+	}
+
+	r = usb_reset_configuration(zd_usb_to_usbdev(usb));
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"couldn't reset configuration. Error number %d\n", r);
+		return r;
+	}
+
+	r = zd_mac_init_hw(mac->hw);
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb),
+		         "couldn't initialize mac. Error number %d\n", r);
+		return r;
+	}
+
+	usb->initialized = 1;
+	return 0;
+}
+
+static int probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	int r;
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct zd_usb *usb;
+	struct ieee80211_hw *hw = NULL;
+
+	print_id(udev);
+
+	if (id->driver_info & DEVICE_INSTALLER)
+		return eject_installer(intf);
+
+	switch (udev->speed) {
+	case USB_SPEED_LOW:
+	case USB_SPEED_FULL:
+	case USB_SPEED_HIGH:
+		break;
+	default:
+		dev_dbg_f(&intf->dev, "Unknown USB speed\n");
+		r = -ENODEV;
+		goto error;
+	}
+
+	r = usb_reset_device(udev);
+	if (r) {
+		dev_err(&intf->dev,
+			"couldn't reset usb device. Error number %d\n", r);
+		goto error;
+	}
+
+	hw = zd_mac_alloc_hw(intf);
+	if (hw == NULL) {
+		r = -ENOMEM;
+		goto error;
+	}
+
+	usb = &zd_hw_mac(hw)->chip.usb;
+	usb->is_zd1211b = (id->driver_info == DEVICE_ZD1211B) != 0;
+
+	r = zd_mac_preinit_hw(hw);
+	if (r) {
+		dev_dbg_f(&intf->dev,
+		         "couldn't initialize mac. Error number %d\n", r);
+		goto error;
+	}
+
+	r = ieee80211_register_hw(hw);
+	if (r) {
+		dev_dbg_f(&intf->dev,
+			 "couldn't register device. Error number %d\n", r);
+		goto error;
+	}
+
+	dev_dbg_f(&intf->dev, "successful\n");
+	dev_info(&intf->dev, "%s\n", wiphy_name(hw->wiphy));
+	return 0;
+error:
+	usb_reset_device(interface_to_usbdev(intf));
+	if (hw) {
+		zd_mac_clear(zd_hw_mac(hw));
+		ieee80211_free_hw(hw);
+	}
+	return r;
+}
+
+static void disconnect(struct usb_interface *intf)
+{
+	struct ieee80211_hw *hw = zd_intf_to_hw(intf);
+	struct zd_mac *mac;
+	struct zd_usb *usb;
+
+	/* Either something really bad happened, or we're just dealing with
+	 * a DEVICE_INSTALLER. */
+	if (hw == NULL)
+		return;
+
+	mac = zd_hw_mac(hw);
+	usb = &mac->chip.usb;
+
+	dev_dbg_f(zd_usb_dev(usb), "\n");
+
+	ieee80211_unregister_hw(hw);
+
+	/* Just in case something has gone wrong! */
+	zd_usb_disable_tx(usb);
+	zd_usb_disable_rx(usb);
+	zd_usb_disable_int(usb);
+
+	/* If the disconnect has been caused by a removal of the
+	 * driver module, the reset allows reloading of the driver. If the
+	 * reset will not be executed here, the upload of the firmware in the
+	 * probe function caused by the reloading of the driver will fail.
+	 */
+	usb_reset_device(interface_to_usbdev(intf));
+
+	zd_mac_clear(mac);
+	ieee80211_free_hw(hw);
+	dev_dbg(&intf->dev, "disconnected\n");
+}
+
+static void zd_usb_resume(struct zd_usb *usb)
+{
+	struct zd_mac *mac = zd_usb_to_mac(usb);
+	int r;
+
+	dev_dbg_f(zd_usb_dev(usb), "\n");
+
+	r = zd_op_start(zd_usb_to_hw(usb));
+	if (r < 0) {
+		dev_warn(zd_usb_dev(usb), "Device resume failed "
+			 "with error code %d. Retrying...\n", r);
+		if (usb->was_running)
+			set_bit(ZD_DEVICE_RUNNING, &mac->flags);
+		usb_queue_reset_device(usb->intf);
+		return;
+	}
+
+	if (mac->type != NL80211_IFTYPE_UNSPECIFIED) {
+		r = zd_restore_settings(mac);
+		if (r < 0) {
+			dev_dbg(zd_usb_dev(usb),
+				"failed to restore settings, %d\n", r);
+			return;
+		}
+	}
+}
+
+static void zd_usb_stop(struct zd_usb *usb)
+{
+	dev_dbg_f(zd_usb_dev(usb), "\n");
+
+	zd_op_stop(zd_usb_to_hw(usb));
+
+	zd_usb_disable_tx(usb);
+	zd_usb_disable_rx(usb);
+	zd_usb_disable_int(usb);
+
+	usb->initialized = 0;
+}
+
+static int pre_reset(struct usb_interface *intf)
+{
+	struct ieee80211_hw *hw = usb_get_intfdata(intf);
+	struct zd_mac *mac;
+	struct zd_usb *usb;
+
+	if (!hw || intf->condition != USB_INTERFACE_BOUND)
+		return 0;
+
+	mac = zd_hw_mac(hw);
+	usb = &mac->chip.usb;
+
+	usb->was_running = test_bit(ZD_DEVICE_RUNNING, &mac->flags);
+
+	zd_usb_stop(usb);
+
+	mutex_lock(&mac->chip.mutex);
+	return 0;
+}
+
+static int post_reset(struct usb_interface *intf)
+{
+	struct ieee80211_hw *hw = usb_get_intfdata(intf);
+	struct zd_mac *mac;
+	struct zd_usb *usb;
+
+	if (!hw || intf->condition != USB_INTERFACE_BOUND)
+		return 0;
+
+	mac = zd_hw_mac(hw);
+	usb = &mac->chip.usb;
+
+	mutex_unlock(&mac->chip.mutex);
+
+	if (usb->was_running)
+		zd_usb_resume(usb);
+	return 0;
+}
+
+static struct usb_driver driver = {
+	.name		= KBUILD_MODNAME,
+	.id_table	= usb_ids,
+	.probe		= probe,
+	.disconnect	= disconnect,
+	.pre_reset	= pre_reset,
+	.post_reset	= post_reset,
+	.disable_hub_initiated_lpm = 1,
+};
+
+struct workqueue_struct *zd_workqueue;
+
+static int __init usb_init(void)
+{
+	int r;
+
+	pr_debug("%s usb_init()\n", driver.name);
+
+	zd_workqueue = create_singlethread_workqueue(driver.name);
+	if (zd_workqueue == NULL) {
+		pr_err("%s couldn't create workqueue\n", driver.name);
+		return -ENOMEM;
+	}
+
+	r = usb_register(&driver);
+	if (r) {
+		destroy_workqueue(zd_workqueue);
+		pr_err("%s usb_register() failed. Error number %d\n",
+		       driver.name, r);
+		return r;
+	}
+
+	pr_debug("%s initialized\n", driver.name);
+	return 0;
+}
+
+static void __exit usb_exit(void)
+{
+	pr_debug("%s usb_exit()\n", driver.name);
+	usb_deregister(&driver);
+	destroy_workqueue(zd_workqueue);
+}
+
+module_init(usb_init);
+module_exit(usb_exit);
+
+static int zd_ep_regs_out_msg(struct usb_device *udev, void *data, int len,
+			      int *actual_length, int timeout)
+{
+	/* In USB 2.0 mode EP_REGS_OUT endpoint is interrupt type. However in
+	 * USB 1.1 mode endpoint is bulk. Select correct type URB by endpoint
+	 * descriptor.
+	 */
+	struct usb_host_endpoint *ep;
+	unsigned int pipe;
+
+	pipe = usb_sndintpipe(udev, EP_REGS_OUT);
+	ep = usb_pipe_endpoint(udev, pipe);
+	if (!ep)
+		return -EINVAL;
+
+	if (usb_endpoint_xfer_int(&ep->desc)) {
+		return usb_interrupt_msg(udev, pipe, data, len,
+					 actual_length, timeout);
+	} else {
+		pipe = usb_sndbulkpipe(udev, EP_REGS_OUT);
+		return usb_bulk_msg(udev, pipe, data, len, actual_length,
+				    timeout);
+	}
+}
+
+static void prepare_read_regs_int(struct zd_usb *usb,
+				  struct usb_req_read_regs *req,
+				  unsigned int count)
+{
+	struct zd_usb_interrupt *intr = &usb->intr;
+
+	spin_lock_irq(&intr->lock);
+	atomic_set(&intr->read_regs_enabled, 1);
+	intr->read_regs.req = req;
+	intr->read_regs.req_count = count;
+	reinit_completion(&intr->read_regs.completion);
+	spin_unlock_irq(&intr->lock);
+}
+
+static void disable_read_regs_int(struct zd_usb *usb)
+{
+	struct zd_usb_interrupt *intr = &usb->intr;
+
+	spin_lock_irq(&intr->lock);
+	atomic_set(&intr->read_regs_enabled, 0);
+	spin_unlock_irq(&intr->lock);
+}
+
+static bool check_read_regs(struct zd_usb *usb, struct usb_req_read_regs *req,
+			    unsigned int count)
+{
+	int i;
+	struct zd_usb_interrupt *intr = &usb->intr;
+	struct read_regs_int *rr = &intr->read_regs;
+	struct usb_int_regs *regs = (struct usb_int_regs *)rr->buffer;
+
+	/* The created block size seems to be larger than expected.
+	 * However results appear to be correct.
+	 */
+	if (rr->length < struct_size(regs, regs, count)) {
+		dev_dbg_f(zd_usb_dev(usb),
+			 "error: actual length %d less than expected %zu\n",
+			 rr->length, struct_size(regs, regs, count));
+		return false;
+	}
+
+	if (rr->length > sizeof(rr->buffer)) {
+		dev_dbg_f(zd_usb_dev(usb),
+			 "error: actual length %d exceeds buffer size %zu\n",
+			 rr->length, sizeof(rr->buffer));
+		return false;
+	}
+
+	for (i = 0; i < count; i++) {
+		struct reg_data *rd = &regs->regs[i];
+		if (rd->addr != req->addr[i]) {
+			dev_dbg_f(zd_usb_dev(usb),
+				 "rd[%d] addr %#06hx expected %#06hx\n", i,
+				 le16_to_cpu(rd->addr),
+				 le16_to_cpu(req->addr[i]));
+			return false;
+		}
+	}
+
+	return true;
+}
+
+static int get_results(struct zd_usb *usb, u16 *values,
+		       struct usb_req_read_regs *req, unsigned int count,
+		       bool *retry)
+{
+	int r;
+	int i;
+	struct zd_usb_interrupt *intr = &usb->intr;
+	struct read_regs_int *rr = &intr->read_regs;
+	struct usb_int_regs *regs = (struct usb_int_regs *)rr->buffer;
+
+	spin_lock_irq(&intr->lock);
+
+	r = -EIO;
+
+	/* Read failed because firmware bug? */
+	*retry = !!intr->read_regs_int_overridden;
+	if (*retry)
+		goto error_unlock;
+
+	if (!check_read_regs(usb, req, count)) {
+		dev_dbg_f(zd_usb_dev(usb), "error: invalid read regs\n");
+		goto error_unlock;
+	}
+
+	for (i = 0; i < count; i++) {
+		struct reg_data *rd = &regs->regs[i];
+		values[i] = le16_to_cpu(rd->value);
+	}
+
+	r = 0;
+error_unlock:
+	spin_unlock_irq(&intr->lock);
+	return r;
+}
+
+int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
+	             const zd_addr_t *addresses, unsigned int count)
+{
+	int r, i, req_len, actual_req_len, try_count = 0;
+	struct usb_device *udev;
+	struct usb_req_read_regs *req = NULL;
+	unsigned long timeout;
+	bool retry = false;
+
+	if (count < 1) {
+		dev_dbg_f(zd_usb_dev(usb), "error: count is zero\n");
+		return -EINVAL;
+	}
+	if (count > USB_MAX_IOREAD16_COUNT) {
+		dev_dbg_f(zd_usb_dev(usb),
+			 "error: count %u exceeds possible max %u\n",
+			 count, USB_MAX_IOREAD16_COUNT);
+		return -EINVAL;
+	}
+	if (!usb_int_enabled(usb)) {
+		dev_dbg_f(zd_usb_dev(usb),
+			  "error: usb interrupt not enabled\n");
+		return -EWOULDBLOCK;
+	}
+
+	ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+	BUILD_BUG_ON(sizeof(struct usb_req_read_regs) + USB_MAX_IOREAD16_COUNT *
+		     sizeof(__le16) > sizeof(usb->req_buf));
+	BUG_ON(sizeof(struct usb_req_read_regs) + count * sizeof(__le16) >
+	       sizeof(usb->req_buf));
+
+	req_len = sizeof(struct usb_req_read_regs) + count * sizeof(__le16);
+	req = (void *)usb->req_buf;
+
+	req->id = cpu_to_le16(USB_REQ_READ_REGS);
+	for (i = 0; i < count; i++)
+		req->addr[i] = cpu_to_le16((u16)addresses[i]);
+
+retry_read:
+	try_count++;
+	udev = zd_usb_to_usbdev(usb);
+	prepare_read_regs_int(usb, req, count);
+	r = zd_ep_regs_out_msg(udev, req, req_len, &actual_req_len, 50 /*ms*/);
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error in zd_ep_regs_out_msg(). Error number %d\n", r);
+		goto error;
+	}
+	if (req_len != actual_req_len) {
+		dev_dbg_f(zd_usb_dev(usb), "error in zd_ep_regs_out_msg()\n"
+			" req_len %d != actual_req_len %d\n",
+			req_len, actual_req_len);
+		r = -EIO;
+		goto error;
+	}
+
+	timeout = wait_for_completion_timeout(&usb->intr.read_regs.completion,
+					      msecs_to_jiffies(50));
+	if (!timeout) {
+		disable_read_regs_int(usb);
+		dev_dbg_f(zd_usb_dev(usb), "read timed out\n");
+		r = -ETIMEDOUT;
+		goto error;
+	}
+
+	r = get_results(usb, values, req, count, &retry);
+	if (retry && try_count < 20) {
+		dev_dbg_f(zd_usb_dev(usb), "read retry, tries so far: %d\n",
+				try_count);
+		goto retry_read;
+	}
+error:
+	return r;
+}
+
+static void iowrite16v_urb_complete(struct urb *urb)
+{
+	struct zd_usb *usb = urb->context;
+
+	if (urb->status && !usb->cmd_error)
+		usb->cmd_error = urb->status;
+
+	if (!usb->cmd_error &&
+			urb->actual_length != urb->transfer_buffer_length)
+		usb->cmd_error = -EIO;
+}
+
+static int zd_submit_waiting_urb(struct zd_usb *usb, bool last)
+{
+	int r = 0;
+	struct urb *urb = usb->urb_async_waiting;
+
+	if (!urb)
+		return 0;
+
+	usb->urb_async_waiting = NULL;
+
+	if (!last)
+		urb->transfer_flags |= URB_NO_INTERRUPT;
+
+	usb_anchor_urb(urb, &usb->submitted_cmds);
+	r = usb_submit_urb(urb, GFP_KERNEL);
+	if (r) {
+		usb_unanchor_urb(urb);
+		dev_dbg_f(zd_usb_dev(usb),
+			"error in usb_submit_urb(). Error number %d\n", r);
+		goto error;
+	}
+
+	/* fall-through with r == 0 */
+error:
+	usb_free_urb(urb);
+	return r;
+}
+
+void zd_usb_iowrite16v_async_start(struct zd_usb *usb)
+{
+	ZD_ASSERT(usb_anchor_empty(&usb->submitted_cmds));
+	ZD_ASSERT(usb->urb_async_waiting == NULL);
+	ZD_ASSERT(!usb->in_async);
+
+	ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+
+	usb->in_async = 1;
+	usb->cmd_error = 0;
+	usb->urb_async_waiting = NULL;
+}
+
+int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout)
+{
+	int r;
+
+	ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+	ZD_ASSERT(usb->in_async);
+
+	/* Submit last iowrite16v URB */
+	r = zd_submit_waiting_urb(usb, true);
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error in zd_submit_waiting_usb(). "
+			"Error number %d\n", r);
+
+		usb_kill_anchored_urbs(&usb->submitted_cmds);
+		goto error;
+	}
+
+	if (timeout)
+		timeout = usb_wait_anchor_empty_timeout(&usb->submitted_cmds,
+							timeout);
+	if (!timeout) {
+		usb_kill_anchored_urbs(&usb->submitted_cmds);
+		if (usb->cmd_error == -ENOENT) {
+			dev_dbg_f(zd_usb_dev(usb), "timed out");
+			r = -ETIMEDOUT;
+			goto error;
+		}
+	}
+
+	r = usb->cmd_error;
+error:
+	usb->in_async = 0;
+	return r;
+}
+
+int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
+			    unsigned int count)
+{
+	int r;
+	struct usb_device *udev;
+	struct usb_req_write_regs *req = NULL;
+	int i, req_len;
+	struct urb *urb;
+	struct usb_host_endpoint *ep;
+
+	ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+	ZD_ASSERT(usb->in_async);
+
+	if (count == 0)
+		return 0;
+	if (count > USB_MAX_IOWRITE16_COUNT) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error: count %u exceeds possible max %u\n",
+			count, USB_MAX_IOWRITE16_COUNT);
+		return -EINVAL;
+	}
+
+	udev = zd_usb_to_usbdev(usb);
+
+	ep = usb_pipe_endpoint(udev, usb_sndintpipe(udev, EP_REGS_OUT));
+	if (!ep)
+		return -ENOENT;
+
+	urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!urb)
+		return -ENOMEM;
+
+	req_len = struct_size(req, reg_writes, count);
+	req = kmalloc(req_len, GFP_KERNEL);
+	if (!req) {
+		r = -ENOMEM;
+		goto error;
+	}
+
+	req->id = cpu_to_le16(USB_REQ_WRITE_REGS);
+	for (i = 0; i < count; i++) {
+		struct reg_data *rw  = &req->reg_writes[i];
+		rw->addr = cpu_to_le16((u16)ioreqs[i].addr);
+		rw->value = cpu_to_le16(ioreqs[i].value);
+	}
+
+	/* In USB 2.0 mode endpoint is interrupt type. However in USB 1.1 mode
+	 * endpoint is bulk. Select correct type URB by endpoint descriptor.
+	 */
+	if (usb_endpoint_xfer_int(&ep->desc))
+		usb_fill_int_urb(urb, udev, usb_sndintpipe(udev, EP_REGS_OUT),
+				 req, req_len, iowrite16v_urb_complete, usb,
+				 ep->desc.bInterval);
+	else
+		usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
+				  req, req_len, iowrite16v_urb_complete, usb);
+
+	urb->transfer_flags |= URB_FREE_BUFFER;
+
+	/* Submit previous URB */
+	r = zd_submit_waiting_urb(usb, false);
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error in zd_submit_waiting_usb(). "
+			"Error number %d\n", r);
+		goto error;
+	}
+
+	/* Delay submit so that URB_NO_INTERRUPT flag can be set for all URBs
+	 * of currect batch except for very last.
+	 */
+	usb->urb_async_waiting = urb;
+	return 0;
+error:
+	usb_free_urb(urb);
+	return r;
+}
+
+int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
+			unsigned int count)
+{
+	int r;
+
+	zd_usb_iowrite16v_async_start(usb);
+	r = zd_usb_iowrite16v_async(usb, ioreqs, count);
+	if (r) {
+		zd_usb_iowrite16v_async_end(usb, 0);
+		return r;
+	}
+	return zd_usb_iowrite16v_async_end(usb, 50 /* ms */);
+}
+
+int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits)
+{
+	int r;
+	struct usb_device *udev;
+	struct usb_req_rfwrite *req = NULL;
+	int i, req_len, actual_req_len;
+	u16 bit_value_template;
+
+	if (bits < USB_MIN_RFWRITE_BIT_COUNT) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error: bits %d are smaller than"
+			" USB_MIN_RFWRITE_BIT_COUNT %d\n",
+			bits, USB_MIN_RFWRITE_BIT_COUNT);
+		return -EINVAL;
+	}
+	if (bits > USB_MAX_RFWRITE_BIT_COUNT) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error: bits %d exceed USB_MAX_RFWRITE_BIT_COUNT %d\n",
+			bits, USB_MAX_RFWRITE_BIT_COUNT);
+		return -EINVAL;
+	}
+#ifdef DEBUG
+	if (value & (~0UL << bits)) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error: value %#09x has bits >= %d set\n",
+			value, bits);
+		return -EINVAL;
+	}
+#endif /* DEBUG */
+
+	dev_dbg_f(zd_usb_dev(usb), "value %#09x bits %d\n", value, bits);
+
+	r = zd_usb_ioread16(usb, &bit_value_template, ZD_CR203);
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error %d: Couldn't read ZD_CR203\n", r);
+		return r;
+	}
+	bit_value_template &= ~(RF_IF_LE|RF_CLK|RF_DATA);
+
+	ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+	BUILD_BUG_ON(sizeof(struct usb_req_rfwrite) +
+		     USB_MAX_RFWRITE_BIT_COUNT * sizeof(__le16) >
+		     sizeof(usb->req_buf));
+	BUG_ON(sizeof(struct usb_req_rfwrite) + bits * sizeof(__le16) >
+	       sizeof(usb->req_buf));
+
+	req_len = sizeof(struct usb_req_rfwrite) + bits * sizeof(__le16);
+	req = (void *)usb->req_buf;
+
+	req->id = cpu_to_le16(USB_REQ_WRITE_RF);
+	/* 1: 3683a, but not used in ZYDAS driver */
+	req->value = cpu_to_le16(2);
+	req->bits = cpu_to_le16(bits);
+
+	for (i = 0; i < bits; i++) {
+		u16 bv = bit_value_template;
+		if (value & (1 << (bits-1-i)))
+			bv |= RF_DATA;
+		req->bit_values[i] = cpu_to_le16(bv);
+	}
+
+	udev = zd_usb_to_usbdev(usb);
+	r = zd_ep_regs_out_msg(udev, req, req_len, &actual_req_len, 50 /*ms*/);
+	if (r) {
+		dev_dbg_f(zd_usb_dev(usb),
+			"error in zd_ep_regs_out_msg(). Error number %d\n", r);
+		goto out;
+	}
+	if (req_len != actual_req_len) {
+		dev_dbg_f(zd_usb_dev(usb), "error in zd_ep_regs_out_msg()"
+			" req_len %d != actual_req_len %d\n",
+			req_len, actual_req_len);
+		r = -EIO;
+		goto out;
+	}
+
+	/* FALL-THROUGH with r == 0 */
+out:
+	return r;
+}
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_usb.h b/drivers/net/wireless/zydas/zd1211rw/zd_usb.h
new file mode 100644
index 000000000..8f03b09a6
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_usb.h
@@ -0,0 +1,280 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#ifndef _ZD_USB_H
+#define _ZD_USB_H
+
+#include <linux/completion.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/skbuff.h>
+#include <linux/usb.h>
+
+#include "zd_def.h"
+
+#define ZD_USB_TX_HIGH  5
+#define ZD_USB_TX_LOW   2
+
+#define ZD_TX_TIMEOUT		(HZ * 5)
+#define ZD_TX_WATCHDOG_INTERVAL	round_jiffies_relative(HZ)
+#define ZD_RX_IDLE_INTERVAL	round_jiffies_relative(30 * HZ)
+
+enum devicetype {
+	DEVICE_ZD1211  = 0,
+	DEVICE_ZD1211B = 1,
+	DEVICE_INSTALLER = 2,
+};
+
+enum endpoints {
+	EP_CTRL	    = 0,
+	EP_DATA_OUT = 1,
+	EP_DATA_IN  = 2,
+	EP_INT_IN   = 3,
+	EP_REGS_OUT = 4,
+};
+
+enum {
+	USB_MAX_TRANSFER_SIZE		= 4096, /* bytes */
+	/* FIXME: The original driver uses this value. We have to check,
+	 * whether the MAX_TRANSFER_SIZE is sufficient and this needs only be
+	 * used if one combined frame is split over two USB transactions.
+	 */
+	USB_MAX_RX_SIZE			= 4800, /* bytes */
+	USB_MAX_IOWRITE16_COUNT		= 15,
+	USB_MAX_IOWRITE32_COUNT		= USB_MAX_IOWRITE16_COUNT/2,
+	USB_MAX_IOREAD16_COUNT		= 15,
+	USB_MAX_IOREAD32_COUNT		= USB_MAX_IOREAD16_COUNT/2,
+	USB_MIN_RFWRITE_BIT_COUNT	= 16,
+	USB_MAX_RFWRITE_BIT_COUNT	= 28,
+	USB_MAX_EP_INT_BUFFER		= 64,
+	USB_ZD1211B_BCD_DEVICE		= 0x4810,
+};
+
+enum control_requests {
+	USB_REQ_WRITE_REGS		= 0x21,
+	USB_REQ_READ_REGS		= 0x22,
+	USB_REQ_WRITE_RF		= 0x23,
+	USB_REQ_PROG_FLASH		= 0x24,
+	USB_REQ_EEPROM_START		= 0x0128, /* ? request is a byte */
+	USB_REQ_EEPROM_MID		= 0x28,
+	USB_REQ_EEPROM_END		= 0x0228, /* ? request is a byte */
+	USB_REQ_FIRMWARE_DOWNLOAD	= 0x30,
+	USB_REQ_FIRMWARE_CONFIRM	= 0x31,
+	USB_REQ_FIRMWARE_READ_DATA	= 0x32,
+};
+
+struct usb_req_read_regs {
+	__le16 id;
+	__le16 addr[];
+} __packed;
+
+struct reg_data {
+	__le16 addr;
+	__le16 value;
+} __packed;
+
+struct usb_req_write_regs {
+	__le16 id;
+	struct reg_data reg_writes[];
+} __packed;
+
+enum {
+	RF_IF_LE = 0x02,
+	RF_CLK   = 0x04,
+	RF_DATA	 = 0x08,
+};
+
+struct usb_req_rfwrite {
+	__le16 id;
+	__le16 value;
+	/* 1: 3683a */
+	/* 2: other (default) */
+	__le16 bits;
+	/* RF2595: 24 */
+	__le16 bit_values[];
+	/* (ZD_CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */
+} __packed;
+
+/* USB interrupt */
+
+enum usb_int_id {
+	USB_INT_TYPE			= 0x01,
+	USB_INT_ID_REGS			= 0x90,
+	USB_INT_ID_RETRY_FAILED		= 0xa0,
+};
+
+enum usb_int_flags {
+	USB_INT_READ_REGS_EN		= 0x01,
+};
+
+struct usb_int_header {
+	u8 type;	/* must always be 1 */
+	u8 id;
+} __packed;
+
+struct usb_int_regs {
+	struct usb_int_header hdr;
+	struct reg_data regs[];
+} __packed;
+
+struct usb_int_retry_fail {
+	struct usb_int_header hdr;
+	u8 new_rate;
+	u8 _dummy;
+	u8 addr[ETH_ALEN];
+	u8 ibss_wakeup_dest;
+} __packed;
+
+struct read_regs_int {
+	struct completion completion;
+	struct usb_req_read_regs *req;
+	unsigned int req_count;
+	/* Stores the USB int structure and contains the USB address of the
+	 * first requested register before request.
+	 */
+	u8 buffer[USB_MAX_EP_INT_BUFFER];
+	int length;
+	__le16 cr_int_addr;
+};
+
+struct zd_ioreq16 {
+	zd_addr_t addr;
+	u16 value;
+};
+
+struct zd_ioreq32 {
+	zd_addr_t addr;
+	u32 value;
+};
+
+struct zd_usb_interrupt {
+	struct read_regs_int read_regs;
+	spinlock_t lock;
+	struct urb *urb;
+	void *buffer;
+	dma_addr_t buffer_dma;
+	int interval;
+	atomic_t read_regs_enabled;
+	u8 read_regs_int_overridden:1;
+};
+
+static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr)
+{
+	return (struct usb_int_regs *)intr->read_regs.buffer;
+}
+
+#define RX_URBS_COUNT 5
+
+struct zd_usb_rx {
+	spinlock_t lock;
+	struct mutex setup_mutex;
+	struct delayed_work idle_work;
+	struct tasklet_struct reset_timer_tasklet;
+	u8 fragment[2 * USB_MAX_RX_SIZE];
+	unsigned int fragment_length;
+	unsigned int usb_packet_size;
+	struct urb **urbs;
+	int urbs_count;
+};
+
+/**
+ * struct zd_usb_tx - structure used for transmitting frames
+ * @enabled: atomic enabled flag, indicates whether tx is enabled
+ * @lock: lock for transmission
+ * @submitted: anchor for URBs sent to device
+ * @submitted_urbs: atomic integer that counts the URBs having sent to the
+ *	device, which haven't been completed
+ * @stopped: indicates whether higher level tx queues are stopped
+ */
+struct zd_usb_tx {
+	atomic_t enabled;
+	spinlock_t lock;
+	struct delayed_work watchdog_work;
+	struct sk_buff_head submitted_skbs;
+	struct usb_anchor submitted;
+	int submitted_urbs;
+	u8 stopped:1, watchdog_enabled:1;
+};
+
+/* Contains the usb parts. The structure doesn't require a lock because intf
+ * will not be changed after initialization.
+ */
+struct zd_usb {
+	struct zd_usb_interrupt intr;
+	struct zd_usb_rx rx;
+	struct zd_usb_tx tx;
+	struct usb_interface *intf;
+	struct usb_anchor submitted_cmds;
+	struct urb *urb_async_waiting;
+	int cmd_error;
+	u8 req_buf[64]; /* zd_usb_iowrite16v needs 62 bytes */
+	u8 is_zd1211b:1, initialized:1, was_running:1, in_async:1;
+};
+
+#define zd_usb_dev(usb) (&usb->intf->dev)
+
+static inline struct usb_device *zd_usb_to_usbdev(struct zd_usb *usb)
+{
+	return interface_to_usbdev(usb->intf);
+}
+
+static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf)
+{
+	return usb_get_intfdata(intf);
+}
+
+static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb)
+{
+	return zd_intf_to_hw(usb->intf);
+}
+
+void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw,
+	         struct usb_interface *intf);
+int zd_usb_init_hw(struct zd_usb *usb);
+void zd_usb_clear(struct zd_usb *usb);
+
+int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size);
+
+void zd_tx_watchdog_enable(struct zd_usb *usb);
+void zd_tx_watchdog_disable(struct zd_usb *usb);
+
+int zd_usb_enable_int(struct zd_usb *usb);
+void zd_usb_disable_int(struct zd_usb *usb);
+
+int zd_usb_enable_rx(struct zd_usb *usb);
+void zd_usb_disable_rx(struct zd_usb *usb);
+
+void zd_usb_reset_rx_idle_timer(struct zd_usb *usb);
+
+void zd_usb_enable_tx(struct zd_usb *usb);
+void zd_usb_disable_tx(struct zd_usb *usb);
+
+int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb);
+
+int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
+	         const zd_addr_t *addresses, unsigned int count);
+
+static inline int zd_usb_ioread16(struct zd_usb *usb, u16 *value,
+	                      const zd_addr_t addr)
+{
+	return zd_usb_ioread16v(usb, value, &addr, 1);
+}
+
+void zd_usb_iowrite16v_async_start(struct zd_usb *usb);
+int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout);
+int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
+			    unsigned int count);
+int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
+	              unsigned int count);
+
+int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits);
+
+int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len);
+
+extern struct workqueue_struct *zd_workqueue;
+
+#endif /* _ZD_USB_H */