uwb: Remove the WLP subsystem and drivers

The only Wimedia LLC Protocol (WLP) hardware was an Intel i1480 chip
with a beta release of firmware that was never commercially available as
a product.  This hardware and firmware is no longer available as Intel
sold their UWB/WLP IP.  I also see little prospect of other WLP
capable hardware ever being available.

Signed-off-by: David Vrabel <david.vrabel@csr.com>

1 files changed, 0 insertions, 415 deletions

diff --git a/drivers/uwb/wlp/eda.c b/drivers/uwb/wlp/eda.c
deleted file mode 100644
index 086fc0cf9401..000000000000
--- a/drivers/uwb/wlp/eda.c
+++ /dev/null
@@ -1,415 +0,0 @@
-/*
- * WUSB Wire Adapter: WLP interface
- * Ethernet to device address cache
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * We need to be able to map ethernet addresses to device addresses
- * and back because there is not explicit relationship between the eth
- * addresses used in the ETH frames and the device addresses (no, it
- * would not have been simpler to force as ETH address the MBOA MAC
- * address...no, not at all :).
- *
- * A device has one MBOA MAC address and one device address. It is possible
- * for a device to have more than one virtual MAC address (although a
- * virtual address can be the same as the MBOA MAC address). The device
- * address is guaranteed to be unique among the devices in the extended
- * beacon group (see ECMA 17.1.1). We thus use the device address as index
- * to this cache. We do allow searching based on virtual address as this
- * is how Ethernet frames will be addressed.
- *
- * We need to support virtual EUI-48. Although, right now the virtual
- * EUI-48 will always be the same as the MAC SAP address. The EDA cache
- * entry thus contains a MAC SAP address as well as the virtual address
- * (used to map the network stack address to a neighbor). When we move
- * to support more than one virtual MAC on a host then this organization
- * will have to change. Perhaps a neighbor has a list of WSSs, each with a
- * tag and virtual EUI-48.
- *
- * On data transmission
- * it is used to determine if the neighbor is connected and what WSS it
- * belongs to. With this we know what tag to add to the WLP frame. Storing
- * the WSS in the EDA cache may be overkill because we only support one
- * WSS. Hopefully we will support more than one WSS at some point.
- * On data reception it is used to determine the WSS based on
- * the tag and address of the transmitting neighbor.
- */
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/slab.h>
-#include <linux/wlp.h>
-#include "wlp-internal.h"
-
-
-/* FIXME: cache is not purged, only on device close */
-
-/* FIXME: does not scale, change to dynamic array */
-
-/*
- * Initialize the EDA cache
- *
- * @returns 0 if ok, < 0 errno code on error
- *
- * Call when the interface is being brought up
- *
- * NOTE: Keep it as a separate function as the implementation will
- *       change and be more complex.
- */
-void wlp_eda_init(struct wlp_eda *eda)
-{
-	INIT_LIST_HEAD(&eda->cache);
-	spin_lock_init(&eda->lock);
-}
-
-/*
- * Release the EDA cache
- *
- * @returns 0 if ok, < 0 errno code on error
- *
- * Called when the interface is brought down
- */
-void wlp_eda_release(struct wlp_eda *eda)
-{
-	unsigned long flags;
-	struct wlp_eda_node *itr, *next;
-
-	spin_lock_irqsave(&eda->lock, flags);
-	list_for_each_entry_safe(itr, next, &eda->cache, list_node) {
-		list_del(&itr->list_node);
-		kfree(itr);
-	}
-	spin_unlock_irqrestore(&eda->lock, flags);
-}
-
-/*
- * Add an address mapping
- *
- * @returns 0 if ok, < 0 errno code on error
- *
- * An address mapping is initially created when the neighbor device is seen
- * for the first time (it is "onair"). At this time the neighbor is not
- * connected or associated with a WSS so we only populate the Ethernet and
- * Device address fields.
- *
- */
-int wlp_eda_create_node(struct wlp_eda *eda,
-			const unsigned char eth_addr[ETH_ALEN],
-			const struct uwb_dev_addr *dev_addr)
-{
-	int result = 0;
-	struct wlp_eda_node *itr;
-	unsigned long flags;
-
-	BUG_ON(dev_addr == NULL || eth_addr == NULL);
-	spin_lock_irqsave(&eda->lock, flags);
-	list_for_each_entry(itr, &eda->cache, list_node) {
-		if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
-			printk(KERN_ERR "EDA cache already contains entry "
-			       "for neighbor %02x:%02x\n",
-			       dev_addr->data[1], dev_addr->data[0]);
-			result = -EEXIST;
-			goto out_unlock;
-		}
-	}
-	itr = kzalloc(sizeof(*itr), GFP_ATOMIC);
-	if (itr != NULL) {
-		memcpy(itr->eth_addr, eth_addr, sizeof(itr->eth_addr));
-		itr->dev_addr = *dev_addr;
-		list_add(&itr->list_node, &eda->cache);
-	} else
-		result = -ENOMEM;
-out_unlock:
-	spin_unlock_irqrestore(&eda->lock, flags);
-	return result;
-}
-
-/*
- * Remove entry from EDA cache
- *
- * This is done when the device goes off air.
- */
-void wlp_eda_rm_node(struct wlp_eda *eda, const struct uwb_dev_addr *dev_addr)
-{
-	struct wlp_eda_node *itr, *next;
-	unsigned long flags;
-
-	spin_lock_irqsave(&eda->lock, flags);
-	list_for_each_entry_safe(itr, next, &eda->cache, list_node) {
-		if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
-			list_del(&itr->list_node);
-			kfree(itr);
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&eda->lock, flags);
-}
-
-/*
- * Update an address mapping
- *
- * @returns 0 if ok, < 0 errno code on error
- */
-int wlp_eda_update_node(struct wlp_eda *eda,
-			const struct uwb_dev_addr *dev_addr,
-			struct wlp_wss *wss,
-			const unsigned char virt_addr[ETH_ALEN],
-			const u8 tag, const enum wlp_wss_connect state)
-{
-	int result = -ENOENT;
-	struct wlp_eda_node *itr;
-	unsigned long flags;
-
-	spin_lock_irqsave(&eda->lock, flags);
-	list_for_each_entry(itr, &eda->cache, list_node) {
-		if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
-			/* Found it, update it */
-			itr->wss = wss;
-			memcpy(itr->virt_addr, virt_addr,
-			       sizeof(itr->virt_addr));
-			itr->tag = tag;
-			itr->state = state;
-			result = 0;
-			goto out_unlock;
-		}
-	}
-	/* Not found */
-out_unlock:
-	spin_unlock_irqrestore(&eda->lock, flags);
-	return result;
-}
-
-/*
- * Update only state field of an address mapping
- *
- * @returns 0 if ok, < 0 errno code on error
- */
-int wlp_eda_update_node_state(struct wlp_eda *eda,
-			      const struct uwb_dev_addr *dev_addr,
-			      const enum wlp_wss_connect state)
-{
-	int result = -ENOENT;
-	struct wlp_eda_node *itr;
-	unsigned long flags;
-
-	spin_lock_irqsave(&eda->lock, flags);
-	list_for_each_entry(itr, &eda->cache, list_node) {
-		if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
-			/* Found it, update it */
-			itr->state = state;
-			result = 0;
-			goto out_unlock;
-		}
-	}
-	/* Not found */
-out_unlock:
-	spin_unlock_irqrestore(&eda->lock, flags);
-	return result;
-}
-
-/*
- * Return contents of EDA cache entry
- *
- * @dev_addr: index to EDA cache
- * @eda_entry: pointer to where contents of EDA cache will be copied
- */
-int wlp_copy_eda_node(struct wlp_eda *eda, struct uwb_dev_addr *dev_addr,
-		      struct wlp_eda_node *eda_entry)
-{
-	int result = -ENOENT;
-	struct wlp_eda_node *itr;
-	unsigned long flags;
-
-	spin_lock_irqsave(&eda->lock, flags);
-	list_for_each_entry(itr, &eda->cache, list_node) {
-		if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
-			*eda_entry = *itr;
-			result = 0;
-			goto out_unlock;
-		}
-	}
-	/* Not found */
-out_unlock:
-	spin_unlock_irqrestore(&eda->lock, flags);
-	return result;
-}
-
-/*
- * Execute function for every element in the cache
- *
- * @function: function to execute on element of cache (must be atomic)
- * @priv:     private data of function
- * @returns:  result of first function that failed, or last function
- *            executed if no function failed.
- *
- * Stop executing when function returns error for any element in cache.
- *
- * IMPORTANT: We are using a spinlock here: the function executed on each
- * element has to be atomic.
- */
-int wlp_eda_for_each(struct wlp_eda *eda, wlp_eda_for_each_f function,
-		     void *priv)
-{
-	int result = 0;
-	struct wlp *wlp = container_of(eda, struct wlp, eda);
-	struct wlp_eda_node *entry;
-	unsigned long flags;
-
-	spin_lock_irqsave(&eda->lock, flags);
-	list_for_each_entry(entry, &eda->cache, list_node) {
-		result = (*function)(wlp, entry, priv);
-		if (result < 0)
-			break;
-	}
-	spin_unlock_irqrestore(&eda->lock, flags);
-	return result;
-}
-
-/*
- * Execute function for single element in the cache (return dev addr)
- *
- * @virt_addr: index into EDA cache used to determine which element to
- *             execute the function on
- * @dev_addr: device address of element in cache will be returned using
- *            @dev_addr
- * @function: function to execute on element of cache (must be atomic)
- * @priv:     private data of function
- * @returns:  result of function
- *
- * IMPORTANT: We are using a spinlock here: the function executed on the
- * element has to be atomic.
- */
-int wlp_eda_for_virtual(struct wlp_eda *eda,
-			const unsigned char virt_addr[ETH_ALEN],
-			struct uwb_dev_addr *dev_addr,
-			wlp_eda_for_each_f function,
-			void *priv)
-{
-	int result = 0;
-	struct wlp *wlp = container_of(eda, struct wlp, eda);
-	struct wlp_eda_node *itr;
-	unsigned long flags;
-	int found = 0;
-
-	spin_lock_irqsave(&eda->lock, flags);
-	list_for_each_entry(itr, &eda->cache, list_node) {
-		if (!memcmp(itr->virt_addr, virt_addr,
-			   sizeof(itr->virt_addr))) {
-			result = (*function)(wlp, itr, priv);
-			*dev_addr = itr->dev_addr;
-			found = 1;
-			break;
-		}
-	}
-	if (!found)
-		result = -ENODEV;
-	spin_unlock_irqrestore(&eda->lock, flags);
-	return result;
-}
-
-static const char *__wlp_wss_connect_state[] = { "WLP_WSS_UNCONNECTED",
-					  "WLP_WSS_CONNECTED",
-					  "WLP_WSS_CONNECT_FAILED",
-};
-
-static const char *wlp_wss_connect_state_str(unsigned id)
-{
-	if (id >= ARRAY_SIZE(__wlp_wss_connect_state))
-		return "unknown WSS connection state";
-	return __wlp_wss_connect_state[id];
-}
-
-/*
- * View EDA cache from user space
- *
- * A debugging feature to give user visibility into the EDA cache. Also
- * used to display members of WSS to user (called from wlp_wss_members_show())
- */
-ssize_t wlp_eda_show(struct wlp *wlp, char *buf)
-{
-	ssize_t result = 0;
-	struct wlp_eda_node *entry;
-	unsigned long flags;
-	struct wlp_eda *eda = &wlp->eda;
-	spin_lock_irqsave(&eda->lock, flags);
-	result = scnprintf(buf, PAGE_SIZE, "#eth_addr dev_addr wss_ptr "
-			   "tag state virt_addr\n");
-	list_for_each_entry(entry, &eda->cache, list_node) {
-		result += scnprintf(buf + result, PAGE_SIZE - result,
-				    "%pM %02x:%02x %p 0x%02x %s %pM\n",
-				    entry->eth_addr,
-				    entry->dev_addr.data[1],
-				    entry->dev_addr.data[0], entry->wss,
-				    entry->tag,
-				    wlp_wss_connect_state_str(entry->state),
-				    entry->virt_addr);
-		if (result >= PAGE_SIZE)
-			break;
-	}
-	spin_unlock_irqrestore(&eda->lock, flags);
-	return result;
-}
-EXPORT_SYMBOL_GPL(wlp_eda_show);
-
-/*
- * Add new EDA cache entry based on user input in sysfs
- *
- * Should only be used for debugging.
- *
- * The WSS is assumed to be the only WSS supported. This needs to be
- * redesigned when we support more than one WSS.
- */
-ssize_t wlp_eda_store(struct wlp *wlp, const char *buf, size_t size)
-{
-	ssize_t result;
-	struct wlp_eda *eda = &wlp->eda;
-	u8 eth_addr[6];
-	struct uwb_dev_addr dev_addr;
-	u8 tag;
-	unsigned state;
-
-	result = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx "
-			"%02hhx:%02hhx %02hhx %u\n",
-			&eth_addr[0], &eth_addr[1],
-			&eth_addr[2], &eth_addr[3],
-			&eth_addr[4], &eth_addr[5],
-			&dev_addr.data[1], &dev_addr.data[0], &tag, &state);
-	switch (result) {
-	case 6: /* no dev addr specified -- remove entry NOT IMPLEMENTED */
-		/*result = wlp_eda_rm(eda, eth_addr, &dev_addr);*/
-		result = -ENOSYS;
-		break;
-	case 10:
-		state = state >= 1 ? 1 : 0;
-		result = wlp_eda_create_node(eda, eth_addr, &dev_addr);
-		if (result < 0 && result != -EEXIST)
-			goto error;
-		/* Set virtual addr to be same as MAC */
-		result = wlp_eda_update_node(eda, &dev_addr, &wlp->wss,
-					     eth_addr, tag, state);
-		if (result < 0)
-			goto error;
-		break;
-	default: /* bad format */
-		result = -EINVAL;
-	}
-error:
-	return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(wlp_eda_store);