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-rw-r--r--drivers/uwb/address.c352
1 files changed, 0 insertions, 352 deletions
diff --git a/drivers/uwb/address.c b/drivers/uwb/address.c
deleted file mode 100644
index 857d5cd56a95..000000000000
--- a/drivers/uwb/address.c
+++ /dev/null
@@ -1,352 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Ultra Wide Band
- * Address management
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * FIXME: docs
- */
-
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/random.h>
-#include <linux/etherdevice.h>
-
-#include "uwb-internal.h"
-
-
-/** Device Address Management command */
-struct uwb_rc_cmd_dev_addr_mgmt {
- struct uwb_rccb rccb;
- u8 bmOperationType;
- u8 baAddr[6];
-} __attribute__((packed));
-
-
-/**
- * Low level command for setting/getting UWB radio's addresses
- *
- * @hwarc: HWA Radio Control interface instance
- * @bmOperationType:
- * Set/get, MAC/DEV (see WUSB1.0[8.6.2.2])
- * @baAddr: address buffer--assumed to have enough data to hold
- * the address type requested.
- * @reply: Pointer to reply buffer (can be stack allocated)
- * @returns: 0 if ok, < 0 errno code on error.
- *
- * @cmd has to be allocated because USB cannot grok USB or vmalloc
- * buffers depending on your combination of host architecture.
- */
-static
-int uwb_rc_dev_addr_mgmt(struct uwb_rc *rc,
- u8 bmOperationType, const u8 *baAddr,
- struct uwb_rc_evt_dev_addr_mgmt *reply)
-{
- int result;
- struct uwb_rc_cmd_dev_addr_mgmt *cmd;
-
- result = -ENOMEM;
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- goto error_kzalloc;
- cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
- cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_DEV_ADDR_MGMT);
- cmd->bmOperationType = bmOperationType;
- if (baAddr) {
- size_t size = 0;
- switch (bmOperationType >> 1) {
- case 0: size = 2; break;
- case 1: size = 6; break;
- default: BUG();
- }
- memcpy(cmd->baAddr, baAddr, size);
- }
- reply->rceb.bEventType = UWB_RC_CET_GENERAL;
- reply->rceb.wEvent = UWB_RC_CMD_DEV_ADDR_MGMT;
- result = uwb_rc_cmd(rc, "DEV-ADDR-MGMT",
- &cmd->rccb, sizeof(*cmd),
- &reply->rceb, sizeof(*reply));
- if (result < 0)
- goto error_cmd;
- if (result < sizeof(*reply)) {
- dev_err(&rc->uwb_dev.dev,
- "DEV-ADDR-MGMT: not enough data replied: "
- "%d vs %zu bytes needed\n", result, sizeof(*reply));
- result = -ENOMSG;
- } else if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
- dev_err(&rc->uwb_dev.dev,
- "DEV-ADDR-MGMT: command execution failed: %s (%d)\n",
- uwb_rc_strerror(reply->bResultCode),
- reply->bResultCode);
- result = -EIO;
- } else
- result = 0;
-error_cmd:
- kfree(cmd);
-error_kzalloc:
- return result;
-}
-
-
-/**
- * Set the UWB RC MAC or device address.
- *
- * @rc: UWB Radio Controller
- * @_addr: Pointer to address to write [assumed to be either a
- * 'struct uwb_mac_addr *' or a 'struct uwb_dev_addr *'].
- * @type: Type of address to set (UWB_ADDR_DEV or UWB_ADDR_MAC).
- * @returns: 0 if ok, < 0 errno code on error.
- *
- * Some anal retentivity here: even if both 'struct
- * uwb_{dev,mac}_addr' have the actual byte array in the same offset
- * and I could just pass _addr to hwarc_cmd_dev_addr_mgmt(), I prefer
- * to use some syntatic sugar in case someday we decide to change the
- * format of the structs. The compiler will optimize it out anyway.
- */
-static int uwb_rc_addr_set(struct uwb_rc *rc,
- const void *_addr, enum uwb_addr_type type)
-{
- int result;
- u8 bmOperationType = 0x1; /* Set address */
- const struct uwb_dev_addr *dev_addr = _addr;
- const struct uwb_mac_addr *mac_addr = _addr;
- struct uwb_rc_evt_dev_addr_mgmt reply;
- const u8 *baAddr;
-
- result = -EINVAL;
- switch (type) {
- case UWB_ADDR_DEV:
- baAddr = dev_addr->data;
- break;
- case UWB_ADDR_MAC:
- baAddr = mac_addr->data;
- bmOperationType |= 0x2;
- break;
- default:
- return result;
- }
- return uwb_rc_dev_addr_mgmt(rc, bmOperationType, baAddr, &reply);
-}
-
-
-/**
- * Get the UWB radio's MAC or device address.
- *
- * @rc: UWB Radio Controller
- * @_addr: Where to write the address data [assumed to be either a
- * 'struct uwb_mac_addr *' or a 'struct uwb_dev_addr *'].
- * @type: Type of address to get (UWB_ADDR_DEV or UWB_ADDR_MAC).
- * @returns: 0 if ok (and *_addr set), < 0 errno code on error.
- *
- * See comment in uwb_rc_addr_set() about anal retentivity in the
- * type handling of the address variables.
- */
-static int uwb_rc_addr_get(struct uwb_rc *rc,
- void *_addr, enum uwb_addr_type type)
-{
- int result;
- u8 bmOperationType = 0x0; /* Get address */
- struct uwb_rc_evt_dev_addr_mgmt evt;
- struct uwb_dev_addr *dev_addr = _addr;
- struct uwb_mac_addr *mac_addr = _addr;
- u8 *baAddr;
-
- result = -EINVAL;
- switch (type) {
- case UWB_ADDR_DEV:
- baAddr = dev_addr->data;
- break;
- case UWB_ADDR_MAC:
- bmOperationType |= 0x2;
- baAddr = mac_addr->data;
- break;
- default:
- return result;
- }
- result = uwb_rc_dev_addr_mgmt(rc, bmOperationType, baAddr, &evt);
- if (result == 0)
- switch (type) {
- case UWB_ADDR_DEV:
- memcpy(&dev_addr->data, evt.baAddr,
- sizeof(dev_addr->data));
- break;
- case UWB_ADDR_MAC:
- memcpy(&mac_addr->data, evt.baAddr,
- sizeof(mac_addr->data));
- break;
- default: /* shut gcc up */
- BUG();
- }
- return result;
-}
-
-
-/** Get @rc's MAC address to @addr */
-int uwb_rc_mac_addr_get(struct uwb_rc *rc,
- struct uwb_mac_addr *addr) {
- return uwb_rc_addr_get(rc, addr, UWB_ADDR_MAC);
-}
-EXPORT_SYMBOL_GPL(uwb_rc_mac_addr_get);
-
-
-/** Get @rc's device address to @addr */
-int uwb_rc_dev_addr_get(struct uwb_rc *rc,
- struct uwb_dev_addr *addr) {
- return uwb_rc_addr_get(rc, addr, UWB_ADDR_DEV);
-}
-EXPORT_SYMBOL_GPL(uwb_rc_dev_addr_get);
-
-
-/** Set @rc's address to @addr */
-int uwb_rc_mac_addr_set(struct uwb_rc *rc,
- const struct uwb_mac_addr *addr)
-{
- int result = -EINVAL;
- mutex_lock(&rc->uwb_dev.mutex);
- result = uwb_rc_addr_set(rc, addr, UWB_ADDR_MAC);
- mutex_unlock(&rc->uwb_dev.mutex);
- return result;
-}
-
-
-/** Set @rc's address to @addr */
-int uwb_rc_dev_addr_set(struct uwb_rc *rc,
- const struct uwb_dev_addr *addr)
-{
- int result = -EINVAL;
- mutex_lock(&rc->uwb_dev.mutex);
- result = uwb_rc_addr_set(rc, addr, UWB_ADDR_DEV);
- rc->uwb_dev.dev_addr = *addr;
- mutex_unlock(&rc->uwb_dev.mutex);
- return result;
-}
-
-/* Returns !0 if given address is already assigned to device. */
-int __uwb_mac_addr_assigned_check(struct device *dev, void *_addr)
-{
- struct uwb_dev *uwb_dev = to_uwb_dev(dev);
- struct uwb_mac_addr *addr = _addr;
-
- if (!uwb_mac_addr_cmp(addr, &uwb_dev->mac_addr))
- return !0;
- return 0;
-}
-
-/* Returns !0 if given address is already assigned to device. */
-int __uwb_dev_addr_assigned_check(struct device *dev, void *_addr)
-{
- struct uwb_dev *uwb_dev = to_uwb_dev(dev);
- struct uwb_dev_addr *addr = _addr;
- if (!uwb_dev_addr_cmp(addr, &uwb_dev->dev_addr))
- return !0;
- return 0;
-}
-
-/**
- * uwb_dev_addr_assign - assigned a generated DevAddr to a radio controller
- * @rc: the (local) radio controller device requiring a new DevAddr
- *
- * A new DevAddr is required when:
- * - first setting up a radio controller
- * - if the hardware reports a DevAddr conflict
- *
- * The DevAddr is randomly generated in the generated DevAddr range
- * [0x100, 0xfeff]. The number of devices in a beacon group is limited
- * by mMaxBPLength (96) so this address space will never be exhausted.
- *
- * [ECMA-368] 17.1.1, 17.16.
- */
-int uwb_rc_dev_addr_assign(struct uwb_rc *rc)
-{
- struct uwb_dev_addr new_addr;
-
- do {
- get_random_bytes(new_addr.data, sizeof(new_addr.data));
- } while (new_addr.data[0] == 0x00 || new_addr.data[0] == 0xff
- || __uwb_dev_addr_assigned(rc, &new_addr));
-
- return uwb_rc_dev_addr_set(rc, &new_addr);
-}
-
-/**
- * uwbd_evt_handle_rc_dev_addr_conflict - handle a DEV_ADDR_CONFLICT event
- * @evt: the DEV_ADDR_CONFLICT notification from the radio controller
- *
- * A new (non-conflicting) DevAddr is assigned to the radio controller.
- *
- * [ECMA-368] 17.1.1.1.
- */
-int uwbd_evt_handle_rc_dev_addr_conflict(struct uwb_event *evt)
-{
- struct uwb_rc *rc = evt->rc;
-
- return uwb_rc_dev_addr_assign(rc);
-}
-
-/*
- * Print the 48-bit EUI MAC address of the radio controller when
- * reading /sys/class/uwb_rc/XX/mac_address
- */
-static ssize_t uwb_rc_mac_addr_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct uwb_dev *uwb_dev = to_uwb_dev(dev);
- struct uwb_rc *rc = uwb_dev->rc;
- struct uwb_mac_addr addr;
- ssize_t result;
-
- mutex_lock(&rc->uwb_dev.mutex);
- result = uwb_rc_addr_get(rc, &addr, UWB_ADDR_MAC);
- mutex_unlock(&rc->uwb_dev.mutex);
- if (result >= 0) {
- result = uwb_mac_addr_print(buf, UWB_ADDR_STRSIZE, &addr);
- buf[result++] = '\n';
- }
- return result;
-}
-
-/*
- * Parse a 48 bit address written to /sys/class/uwb_rc/XX/mac_address
- * and if correct, set it.
- */
-static ssize_t uwb_rc_mac_addr_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t size)
-{
- struct uwb_dev *uwb_dev = to_uwb_dev(dev);
- struct uwb_rc *rc = uwb_dev->rc;
- struct uwb_mac_addr addr;
- ssize_t result;
-
- if (!mac_pton(buf, addr.data))
- return -EINVAL;
- if (is_multicast_ether_addr(addr.data)) {
- dev_err(&rc->uwb_dev.dev, "refusing to set multicast "
- "MAC address %s\n", buf);
- return -EINVAL;
- }
- result = uwb_rc_mac_addr_set(rc, &addr);
- if (result == 0)
- rc->uwb_dev.mac_addr = addr;
-
- return result < 0 ? result : size;
-}
-DEVICE_ATTR(mac_address, S_IRUGO | S_IWUSR, uwb_rc_mac_addr_show, uwb_rc_mac_addr_store);
-
-/** Print @addr to @buf, @return bytes written */
-size_t __uwb_addr_print(char *buf, size_t buf_size, const unsigned char *addr,
- int type)
-{
- size_t result;
- if (type)
- result = scnprintf(buf, buf_size, "%pM", addr);
- else
- result = scnprintf(buf, buf_size, "%02x:%02x",
- addr[1], addr[0]);
- return result;
-}
-EXPORT_SYMBOL_GPL(__uwb_addr_print);
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